Documentation/ABI/testing/debugfs-aufs | 55 + Documentation/ABI/testing/sysfs-aufs | 31 + Documentation/block/bfq-iosched.txt | 74 +- Documentation/filesystems/aufs/README | 393 + Documentation/filesystems/aufs/design/01intro.txt | 171 + Documentation/filesystems/aufs/design/02struct.txt | 258 + Documentation/filesystems/aufs/design/03atomic_open.txt | 85 + Documentation/filesystems/aufs/design/03lookup.txt | 113 + Documentation/filesystems/aufs/design/04branch.txt | 74 + Documentation/filesystems/aufs/design/05wbr_policy.txt | 64 + Documentation/filesystems/aufs/design/06dirren.dot | 31 + Documentation/filesystems/aufs/design/06dirren.txt | 102 + Documentation/filesystems/aufs/design/06fhsm.txt | 120 + Documentation/filesystems/aufs/design/06mmap.txt | 72 + Documentation/filesystems/aufs/design/06xattr.txt | 96 + Documentation/filesystems/aufs/design/07export.txt | 58 + Documentation/filesystems/aufs/design/08shwh.txt | 52 + Documentation/filesystems/aufs/design/10dynop.txt | 47 + Documentation/scheduler/sched-PDS-mq.txt | 56 + Documentation/sysctl/kernel.txt | 37 + Documentation/tp_smapi.txt | 275 + Documentation/vm/00-INDEX | 2 + Documentation/vm/uksm.txt | 61 + MAINTAINERS | 13 + Makefile | 8 +- arch/powerpc/platforms/cell/spufs/sched.c | 5 - arch/x86/Kconfig | 16 + arch/x86/Kconfig.cpu | 249 +- arch/x86/Makefile | 39 +- arch/x86/Makefile_32.cpu | 26 +- arch/x86/include/asm/module.h | 44 + block/Kconfig.iosched | 50 + block/Makefile | 2 + block/bfq-cgroup-included.c | 1354 + block/bfq-ioc.c | 36 + block/bfq-mq-iosched.c | 6426 ++++ block/bfq-mq.h | 1031 + block/bfq-sched.c | 2077 ++ block/bfq-sq-iosched.c | 5841 ++++ block/bfq.h | 1022 + block/elevator.c | 6 + drivers/block/loop.c | 18 + drivers/cpufreq/cpufreq_conservative.c | 9 +- drivers/cpufreq/cpufreq_ondemand.c | 15 +- drivers/gpu/drm/amd/display/dc/basics/logger.c | 2 +- drivers/gpu/drm/i915/intel_dp_link_training.c | 26 +- drivers/gpu/drm/i915/intel_lspcon.c | 2 +- drivers/infiniband/core/addr.c | 1 + drivers/input/mouse/synaptics.c | 4 +- drivers/input/mouse/synaptics.h | 1 + drivers/input/touchscreen/atmel_mxt_ts.c | 2 +- drivers/macintosh/Kconfig | 7 + drivers/macintosh/adbhid.c | 83 +- drivers/platform/x86/Kconfig | 19 + drivers/platform/x86/Makefile | 2 + drivers/platform/x86/hdaps.c | 945 +- drivers/platform/x86/thinkpad_ec.c | 513 + drivers/platform/x86/tp_smapi.c | 1493 + drivers/scsi/Kconfig | 2 + drivers/scsi/Makefile | 1 + drivers/scsi/vhba/Kconfig | 9 + drivers/scsi/vhba/Makefile | 4 + drivers/scsi/vhba/vhba.c | 1076 + drivers/tty/Kconfig | 13 + drivers/usb/gadget/function/u_serial.c | 5 + drivers/video/logo/Kconfig | 89 +- drivers/video/logo/Makefile | 12 + drivers/video/logo/logo.c | 152 +- drivers/video/logo/logo_arch_clut224.ppm | 43204 ++++++++++++++++++++++++++ drivers/video/logo/logo_bsd_clut224.ppm | 2403 ++ drivers/video/logo/logo_debian_clut224.ppm | 883 + drivers/video/logo/logo_exherbo_clut224.ppm | 963 + drivers/video/logo/logo_fbsd_clut224.ppm | 2403 ++ drivers/video/logo/logo_fedoraglossy_clut224.ppm | 1123 + drivers/video/logo/logo_fedorasimple_clut224.ppm | 1123 + drivers/video/logo/logo_gentoo_clut224.ppm | 803 + drivers/video/logo/logo_oldzen_clut224.ppm | 882 + drivers/video/logo/logo_slackware_clut224.ppm | 1123 + drivers/video/logo/logo_tits_clut224.ppm | 1443 + drivers/video/logo/logo_zen_clut224.ppm | 2043 ++ fs/Kconfig | 2 + fs/Makefile | 2 + fs/aufs/Kconfig | 199 + fs/aufs/Makefile | 46 + fs/aufs/aufs.h | 61 + fs/aufs/branch.c | 1422 + fs/aufs/branch.h | 374 + fs/aufs/conf.mk | 40 + fs/aufs/cpup.c | 1441 + fs/aufs/cpup.h | 100 + fs/aufs/dbgaufs.c | 478 + fs/aufs/dbgaufs.h | 53 + fs/aufs/dcsub.c | 225 + fs/aufs/dcsub.h | 137 + fs/aufs/debug.c | 441 + fs/aufs/debug.h | 226 + fs/aufs/dentry.c | 1153 + fs/aufs/dentry.h | 267 + fs/aufs/dinfo.c | 554 + fs/aufs/dir.c | 760 + fs/aufs/dir.h | 132 + fs/aufs/dirren.c | 1316 + fs/aufs/dirren.h | 140 + fs/aufs/dynop.c | 370 + fs/aufs/dynop.h | 75 + fs/aufs/export.c | 838 + fs/aufs/f_op.c | 818 + fs/aufs/fhsm.c | 427 + fs/aufs/file.c | 857 + fs/aufs/file.h | 341 + fs/aufs/finfo.c | 149 + fs/aufs/fstype.h | 401 + fs/aufs/hbl.h | 65 + fs/aufs/hfsnotify.c | 290 + fs/aufs/hfsplus.c | 57 + fs/aufs/hnotify.c | 720 + fs/aufs/i_op.c | 1460 + fs/aufs/i_op_add.c | 921 + fs/aufs/i_op_del.c | 512 + fs/aufs/i_op_ren.c | 1247 + fs/aufs/iinfo.c | 286 + fs/aufs/inode.c | 528 + fs/aufs/inode.h | 696 + fs/aufs/ioctl.c | 220 + fs/aufs/loop.c | 148 + fs/aufs/loop.h | 53 + fs/aufs/magic.mk | 31 + fs/aufs/module.c | 273 + fs/aufs/module.h | 102 + fs/aufs/mvdown.c | 705 + fs/aufs/opts.c | 1891 ++ fs/aufs/opts.h | 225 + fs/aufs/plink.c | 516 + fs/aufs/poll.c | 51 + fs/aufs/posix_acl.c | 103 + fs/aufs/procfs.c | 171 + fs/aufs/rdu.c | 382 + fs/aufs/rwsem.h | 73 + fs/aufs/sbinfo.c | 312 + fs/aufs/super.c | 1043 + fs/aufs/super.h | 627 + fs/aufs/sysaufs.c | 93 + fs/aufs/sysaufs.h | 102 + fs/aufs/sysfs.c | 373 + fs/aufs/sysrq.c | 160 + fs/aufs/vdir.c | 894 + fs/aufs/vfsub.c | 895 + fs/aufs/vfsub.h | 355 + fs/aufs/wbr_policy.c | 830 + fs/aufs/whout.c | 1062 + fs/aufs/whout.h | 86 + fs/aufs/wkq.c | 391 + fs/aufs/wkq.h | 94 + fs/aufs/xattr.c | 356 + fs/aufs/xino.c | 1593 + fs/dcache.c | 4 +- fs/exec.c | 9 +- fs/exfat/Kconfig | 39 + fs/exfat/LICENSE | 339 + fs/exfat/Makefile | 54 + fs/exfat/README.md | 98 + fs/exfat/dkms.conf | 7 + fs/exfat/exfat-km.mk | 11 + fs/exfat/exfat_api.c | 528 + fs/exfat/exfat_api.h | 206 + fs/exfat/exfat_bitmap.c | 63 + fs/exfat/exfat_bitmap.h | 55 + fs/exfat/exfat_blkdev.c | 197 + fs/exfat/exfat_blkdev.h | 73 + fs/exfat/exfat_cache.c | 784 + fs/exfat/exfat_cache.h | 85 + fs/exfat/exfat_config.h | 69 + fs/exfat/exfat_core.c | 5138 +++ fs/exfat/exfat_core.h | 671 + fs/exfat/exfat_data.c | 77 + fs/exfat/exfat_data.h | 58 + fs/exfat/exfat_nls.c | 448 + fs/exfat/exfat_nls.h | 91 + fs/exfat/exfat_oal.c | 196 + fs/exfat/exfat_oal.h | 74 + fs/exfat/exfat_super.c | 2719 ++ fs/exfat/exfat_super.h | 171 + fs/exfat/exfat_upcase.c | 405 + fs/exfat/exfat_version.h | 19 + fs/fcntl.c | 5 +- fs/file_table.c | 4 + fs/inode.c | 3 +- fs/namespace.c | 9 + fs/notify/group.c | 4 + fs/notify/mark.c | 4 + fs/open.c | 6 + fs/proc/base.c | 4 +- fs/proc/meminfo.c | 4 + fs/proc/nommu.c | 5 +- fs/proc/task_mmu.c | 7 +- fs/proc/task_nommu.c | 5 +- fs/read_write.c | 26 + fs/splice.c | 12 +- fs/sync.c | 3 +- fs/xattr.c | 1 + include/Documentation/ABI/testing/debugfs-aufs | 50 + include/Documentation/ABI/testing/sysfs-aufs | 31 + include/Documentation/filesystems/aufs/README | 393 + include/Documentation/filesystems/aufs/design/01intro.txt | 171 + include/Documentation/filesystems/aufs/design/02struct.txt | 258 + include/Documentation/filesystems/aufs/design/03atomic_open.txt | 85 + include/Documentation/filesystems/aufs/design/03lookup.txt | 113 + include/Documentation/filesystems/aufs/design/04branch.txt | 74 + include/Documentation/filesystems/aufs/design/05wbr_policy.txt | 64 + include/Documentation/filesystems/aufs/design/06dirren.dot | 31 + include/Documentation/filesystems/aufs/design/06dirren.txt | 102 + include/Documentation/filesystems/aufs/design/06fhsm.txt | 120 + include/Documentation/filesystems/aufs/design/06mmap.txt | 72 + include/Documentation/filesystems/aufs/design/06xattr.txt | 96 + include/Documentation/filesystems/aufs/design/07export.txt | 58 + include/Documentation/filesystems/aufs/design/08shwh.txt | 52 + include/Documentation/filesystems/aufs/design/10dynop.txt | 47 + include/asm-generic/pgtable.h | 17 +- include/fs/aufs/Kconfig | 199 + include/fs/aufs/Makefile | 46 + include/fs/aufs/aufs.h | 60 + include/fs/aufs/branch.c | 1432 + include/fs/aufs/branch.h | 333 + include/fs/aufs/conf.mk | 40 + include/fs/aufs/cpup.c | 1442 + include/fs/aufs/cpup.h | 99 + include/fs/aufs/dbgaufs.c | 437 + include/fs/aufs/dbgaufs.h | 48 + include/fs/aufs/dcsub.c | 225 + include/fs/aufs/dcsub.h | 136 + include/fs/aufs/debug.c | 440 + include/fs/aufs/debug.h | 225 + include/fs/aufs/dentry.c | 1152 + include/fs/aufs/dentry.h | 266 + include/fs/aufs/dinfo.c | 553 + include/fs/aufs/dir.c | 759 + include/fs/aufs/dir.h | 131 + include/fs/aufs/dirren.c | 1315 + include/fs/aufs/dirren.h | 139 + include/fs/aufs/dynop.c | 369 + include/fs/aufs/dynop.h | 74 + include/fs/aufs/export.c | 836 + include/fs/aufs/f_op.c | 817 + include/fs/aufs/fhsm.c | 427 + include/fs/aufs/file.c | 856 + include/fs/aufs/file.h | 340 + include/fs/aufs/finfo.c | 148 + include/fs/aufs/fstype.h | 400 + include/fs/aufs/hbl.h | 64 + include/fs/aufs/hfsnotify.c | 289 + include/fs/aufs/hfsplus.c | 56 + include/fs/aufs/hnotify.c | 719 + include/fs/aufs/i_op.c | 1459 + include/fs/aufs/i_op_add.c | 920 + include/fs/aufs/i_op_del.c | 511 + include/fs/aufs/i_op_ren.c | 1246 + include/fs/aufs/iinfo.c | 285 + include/fs/aufs/inode.c | 527 + include/fs/aufs/inode.h | 695 + include/fs/aufs/ioctl.c | 219 + include/fs/aufs/loop.c | 147 + include/fs/aufs/loop.h | 52 + include/fs/aufs/magic.mk | 31 + include/fs/aufs/module.c | 266 + include/fs/aufs/module.h | 101 + include/fs/aufs/mvdown.c | 704 + include/fs/aufs/opts.c | 1891 ++ include/fs/aufs/opts.h | 224 + include/fs/aufs/plink.c | 515 + include/fs/aufs/poll.c | 53 + include/fs/aufs/posix_acl.c | 102 + include/fs/aufs/procfs.c | 170 + include/fs/aufs/rdu.c | 381 + include/fs/aufs/rwsem.h | 72 + include/fs/aufs/sbinfo.c | 304 + include/fs/aufs/super.c | 1046 + include/fs/aufs/super.h | 626 + include/fs/aufs/sysaufs.c | 104 + include/fs/aufs/sysaufs.h | 101 + include/fs/aufs/sysfs.c | 376 + include/fs/aufs/sysrq.c | 159 + include/fs/aufs/vdir.c | 893 + include/fs/aufs/vfsub.c | 894 + include/fs/aufs/vfsub.h | 360 + include/fs/aufs/wbr_policy.c | 830 + include/fs/aufs/whout.c | 1061 + include/fs/aufs/whout.h | 85 + include/fs/aufs/wkq.c | 390 + include/fs/aufs/wkq.h | 93 + include/fs/aufs/xattr.c | 355 + include/fs/aufs/xino.c | 1469 + include/linux/blkdev.h | 10 +- include/linux/file.h | 1 + include/linux/fs.h | 10 + include/linux/init_task.h | 4 + include/linux/ioprio.h | 2 + include/linux/jiffies.h | 2 +- include/linux/ksm.h | 44 +- include/linux/linux_logo.h | 12 + include/linux/lockdep.h | 3 + include/linux/mm.h | 22 + include/linux/mm_types.h | 5 + include/linux/mmzone.h | 5 +- include/linux/mnt_namespace.h | 3 + include/linux/sched.h | 53 +- include/linux/sched/deadline.h | 18 + include/linux/sched/nohz.h | 2 +- include/linux/sched/prio.h | 12 + include/linux/sched/rt.h | 4 + include/linux/sched/task.h | 2 +- include/linux/skip_list.h | 177 + include/linux/splice.h | 6 + include/linux/sradix-tree.h | 77 + include/linux/thinkpad_ec.h | 47 + include/linux/uksm.h | 149 + include/trace/events/fs.h | 53 + include/uapi/linux/aufs_type.h | 448 + include/uapi/linux/sched.h | 7 +- include/uapi/linux/vt.h | 15 +- init/Kconfig | 71 + init/init_task.c | 128 +- kernel/cgroup/cpuset.c | 4 +- kernel/delayacct.c | 2 +- kernel/exit.c | 4 +- kernel/fork.c | 21 +- kernel/livepatch/transition.c | 15 + kernel/locking/lockdep.c | 4 +- kernel/locking/rtmutex.c | 6 +- kernel/sched/Makefile | 18 +- kernel/sched/cpufreq_schedutil.c | 19 + kernel/sched/cputime.c | 33 +- kernel/sched/fair.c | 25 + kernel/sched/idle.c | 2 + kernel/sched/pds.c | 6366 ++++ kernel/sched/pds_sched.h | 352 + kernel/sched/sched.h | 5 + kernel/sched/stats.c | 4 + kernel/sysctl.c | 54 +- kernel/task_work.c | 1 + kernel/time/posix-cpu-timers.c | 16 +- kernel/trace/trace_selftest.c | 5 + kernel/user_namespace.c | 7 + lib/Makefile | 2 +- lib/sradix-tree.c | 476 + mm/Kconfig | 26 + mm/Makefile | 5 +- mm/filemap.c | 2 +- mm/memory.c | 36 +- mm/mmap.c | 70 +- mm/nommu.c | 8 +- mm/page-writeback.c | 8 + mm/prfile.c | 86 + mm/rmap.c | 4 +- mm/uksm.c | 5596 ++++ mm/vmstat.c | 3 + net/ipv4/Kconfig | 4 + scripts/mkcompile_h | 4 +- security/commoncap.c | 2 + security/device_cgroup.c | 2 + security/security.c | 10 + 360 files changed, 181629 insertions(+), 593 deletions(-) diff --git a/Documentation/ABI/testing/debugfs-aufs b/Documentation/ABI/testing/debugfs-aufs new file mode 100644 index 00000000000..4a6694194ba --- /dev/null +++ b/Documentation/ABI/testing/debugfs-aufs @@ -0,0 +1,55 @@ +What: /debug/aufs/si_/ +Date: March 2009 +Contact: J. R. Okajima +Description: + Under /debug/aufs, a directory named si_ is created + per aufs mount, where is a unique id generated + internally. + +What: /debug/aufs/si_/plink +Date: Apr 2013 +Contact: J. R. Okajima +Description: + It has three lines and shows the information about the + pseudo-link. The first line is a single number + representing a number of buckets. The second line is a + number of pseudo-links per buckets (separated by a + blank). The last line is a single number representing a + total number of psedo-links. + When the aufs mount option 'noplink' is specified, it + will show "1\n0\n0\n". + +What: /debug/aufs/si_/xib +Date: March 2009 +Contact: J. R. Okajima +Description: + It shows the consumed blocks by xib (External Inode Number + Bitmap), its block size and file size. + When the aufs mount option 'noxino' is specified, it + will be empty. About XINO files, see the aufs manual. + +What: /debug/aufs/si_/xi0, xi1 ... xiN and xiN-N +Date: March 2009 +Contact: J. R. Okajima +Description: + It shows the consumed blocks by xino (External Inode Number + Translation Table), its link count, block size and file + size. + Due to the file size limit, there may exist multiple + xino files per branch. In this case, "-N" is added to + the filename and it corresponds to the index of the + internal xino array. "-0" is omitted. + When the aufs mount option 'noxino' is specified, Those + entries won't exist. About XINO files, see the aufs + manual. + +What: /debug/aufs/si_/xigen +Date: March 2009 +Contact: J. R. Okajima +Description: + It shows the consumed blocks by xigen (External Inode + Generation Table), its block size and file size. + If CONFIG_AUFS_EXPORT is disabled, this entry will not + be created. + When the aufs mount option 'noxino' is specified, it + will be empty. About XINO files, see the aufs manual. diff --git a/Documentation/ABI/testing/sysfs-aufs b/Documentation/ABI/testing/sysfs-aufs new file mode 100644 index 00000000000..82f9518495e --- /dev/null +++ b/Documentation/ABI/testing/sysfs-aufs @@ -0,0 +1,31 @@ +What: /sys/fs/aufs/si_/ +Date: March 2009 +Contact: J. R. Okajima +Description: + Under /sys/fs/aufs, a directory named si_ is created + per aufs mount, where is a unique id generated + internally. + +What: /sys/fs/aufs/si_/br0, br1 ... brN +Date: March 2009 +Contact: J. R. Okajima +Description: + It shows the abolute path of a member directory (which + is called branch) in aufs, and its permission. + +What: /sys/fs/aufs/si_/brid0, brid1 ... bridN +Date: July 2013 +Contact: J. R. Okajima +Description: + It shows the id of a member directory (which is called + branch) in aufs. + +What: /sys/fs/aufs/si_/xi_path +Date: March 2009 +Contact: J. R. Okajima +Description: + It shows the abolute path of XINO (External Inode Number + Bitmap, Translation Table and Generation Table) file + even if it is the default path. + When the aufs mount option 'noxino' is specified, it + will be empty. About XINO files, see the aufs manual. diff --git a/Documentation/block/bfq-iosched.txt b/Documentation/block/bfq-iosched.txt index 8d8d8f06cab..30ef2dba85a 100644 --- a/Documentation/block/bfq-iosched.txt +++ b/Documentation/block/bfq-iosched.txt @@ -11,6 +11,15 @@ controllers), BFQ's main features are: groups (switching back to time distribution when needed to keep throughput high). +If bfq-mq patches have been applied, then the following three +instances of BFQ are available (otherwise only the first instance): +- bfq: mainline version of BFQ, for blk-mq +- bfq-mq: development version of BFQ for blk-mq; this version contains + also all latest features and fixes not yet landed in mainline, plus many + safety checks +- bfq-sq: BFQ for legacy blk; also this version contains latest features + and fixes, as well as safety checks + In its default configuration, BFQ privileges latency over throughput. So, when needed for achieving a lower latency, BFQ builds schedules that may lead to a lower throughput. If your main or only @@ -22,27 +31,42 @@ latency and throughput, or on how to maximize throughput. BFQ has a non-null overhead, which limits the maximum IOPS that a CPU can process for a device scheduled with BFQ. To give an idea of the -limits on slow or average CPUs, here are, first, the limits of BFQ for -three different CPUs, on, respectively, an average laptop, an old -desktop, and a cheap embedded system, in case full hierarchical -support is enabled (i.e., CONFIG_BFQ_GROUP_IOSCHED is set), but +limits on slow or average CPUs, here are, first, the limits of bfq-mq +and bfq for three different CPUs, on, respectively, an average laptop, +an old desktop, and a cheap embedded system, in case full hierarchical +support is enabled (i.e., CONFIG_MQ_BFQ_GROUP_IOSCHED is set for +bfq-mq, or CONFIG_BFQ_GROUP_IOSCHED is set for bfq), but CONFIG_DEBUG_BLK_CGROUP is not set (Section 4-2): - Intel i7-4850HQ: 400 KIOPS - AMD A8-3850: 250 KIOPS - ARM CortexTM-A53 Octa-core: 80 KIOPS -If CONFIG_DEBUG_BLK_CGROUP is set (and of course full hierarchical -support is enabled), then the sustainable throughput with BFQ -decreases, because all blkio.bfq* statistics are created and updated -(Section 4-2). For BFQ, this leads to the following maximum -sustainable throughputs, on the same systems as above: +As for bfq-sq, it cannot reach the above IOPS, because of the +inherent, lower parallelism of legacy blk and of the components within +it (including bfq-sq itself). In particular, results with +CONFIG_DEBUG_BLK_CGROUP unset are rather fluctuating. The limits +reported below for the case CONFIG_DEBUG_BLK_CGROUP set will however +provide a lower bound to the limits of bfq-sq. + +Turning back to bfq-mq and bfq, If CONFIG_DEBUG_BLK_CGROUP is set (and +of course full hierarchical support is enabled), then the sustainable +throughput with bfq-mq and bfq decreases, because all blkio.bfq* +statistics are created and updated (Section 4-2). For bfq-mq and bfq, +this leads to the following maximum sustainable throughputs, on the +same systems as above: - Intel i7-4850HQ: 310 KIOPS - AMD A8-3850: 200 KIOPS - ARM CortexTM-A53 Octa-core: 56 KIOPS -BFQ works for multi-queue devices too. +Finally, if CONFIG_DEBUG_BLK_CGROUP is set (and full hierarchical +support is enabled), then bfq-sq exhibits the following limits: +- Intel i7-4850HQ: 250 KIOPS +- AMD A8-3850: 170 KIOPS +- ARM CortexTM-A53 Octa-core: 45 KIOPS + +BFQ works for multi-queue devices too (bfq and bfq-mq instances). -The table of contents follow. Impatients can just jump to Section 3. +The table of contents follows. Impatients can just jump to Section 3. CONTENTS @@ -509,25 +533,27 @@ To get proportional sharing of bandwidth with BFQ for a given device, BFQ must of course be the active scheduler for that device. Within each group directory, the names of the files associated with -BFQ-specific cgroup parameters and stats begin with the "bfq." -prefix. So, with cgroups-v1 or cgroups-v2, the full prefix for -BFQ-specific files is "blkio.bfq." or "io.bfq." For example, the group -parameter to set the weight of a group with BFQ is blkio.bfq.weight +BFQ-specific cgroup parameters and stats begin with the "bfq.", +"bfq-sq." or "bfq-mq." prefix, depending on which instance of bfq you +want to use. So, with cgroups-v1 or cgroups-v2, the full prefix for +BFQ-specific files is "blkio.bfqX." or "io.bfqX.", where X can be "" +(i.e., null string), "-sq" or "-mq". For example, the group parameter +to set the weight of a group with the mainline BFQ is blkio.bfq.weight or io.bfq.weight. As for cgroups-v1 (blkio controller), the exact set of stat files -created, and kept up-to-date by bfq, depends on whether -CONFIG_DEBUG_BLK_CGROUP is set. If it is set, then bfq creates all +created, and kept up-to-date by bfq*, depends on whether +CONFIG_DEBUG_BLK_CGROUP is set. If it is set, then bfq* creates all the stat files documented in Documentation/cgroup-v1/blkio-controller.txt. If, instead, -CONFIG_DEBUG_BLK_CGROUP is not set, then bfq creates only the files -blkio.bfq.io_service_bytes -blkio.bfq.io_service_bytes_recursive -blkio.bfq.io_serviced -blkio.bfq.io_serviced_recursive +CONFIG_DEBUG_BLK_CGROUP is not set, then bfq* creates only the files +blkio.bfq*.io_service_bytes +blkio.bfq*.io_service_bytes_recursive +blkio.bfq*.io_serviced +blkio.bfq*.io_serviced_recursive The value of CONFIG_DEBUG_BLK_CGROUP greatly influences the maximum -throughput sustainable with bfq, because updating the blkio.bfq.* +throughput sustainable with bfq*, because updating the blkio.bfq* stats is rather costly, especially for some of the stats enabled by CONFIG_DEBUG_BLK_CGROUP. @@ -536,7 +562,7 @@ Parameters to set For each group, there is only the following parameter to set. -weight (namely blkio.bfq.weight or io.bfq-weight): the weight of the +weight (namely blkio.bfqX.weight or io.bfqX.weight): the weight of the group inside its parent. Available values: 1..10000 (default 100). The linear mapping between ioprio and weights, described at the beginning of the tunable section, is still valid, but all weights higher than diff --git a/Documentation/filesystems/aufs/README b/Documentation/filesystems/aufs/README new file mode 100644 index 00000000000..013ea14d066 --- /dev/null +++ b/Documentation/filesystems/aufs/README @@ -0,0 +1,393 @@ + +Aufs4 -- advanced multi layered unification filesystem version 4.x +http://aufs.sf.net +Junjiro R. Okajima + + +0. Introduction +---------------------------------------- +In the early days, aufs was entirely re-designed and re-implemented +Unionfs Version 1.x series. Adding many original ideas, approaches, +improvements and implementations, it becomes totally different from +Unionfs while keeping the basic features. +Recently, Unionfs Version 2.x series begin taking some of the same +approaches to aufs1's. +Unionfs is being developed by Professor Erez Zadok at Stony Brook +University and his team. + +Aufs4 supports linux-4.0 and later, and for linux-3.x series try aufs3. +If you want older kernel version support, try aufs2-2.6.git or +aufs2-standalone.git repository, aufs1 from CVS on SourceForge. + +Note: it becomes clear that "Aufs was rejected. Let's give it up." + According to Christoph Hellwig, linux rejects all union-type + filesystems but UnionMount. + + +PS. Al Viro seems have a plan to merge aufs as well as overlayfs and + UnionMount, and he pointed out an issue around a directory mutex + lock and aufs addressed it. But it is still unsure whether aufs will + be merged (or any other union solution). + + + +1. Features +---------------------------------------- +- unite several directories into a single virtual filesystem. The member + directory is called as a branch. +- you can specify the permission flags to the branch, which are 'readonly', + 'readwrite' and 'whiteout-able.' +- by upper writable branch, internal copyup and whiteout, files/dirs on + readonly branch are modifiable logically. +- dynamic branch manipulation, add, del. +- etc... + +Also there are many enhancements in aufs, such as: +- test only the highest one for the directory permission (dirperm1) +- copyup on open (coo=) +- 'move' policy for copy-up between two writable branches, after + checking free space. +- xattr, acl +- readdir(3) in userspace. +- keep inode number by external inode number table +- keep the timestamps of file/dir in internal copyup operation +- seekable directory, supporting NFS readdir. +- whiteout is hardlinked in order to reduce the consumption of inodes + on branch +- do not copyup, nor create a whiteout when it is unnecessary +- revert a single systemcall when an error occurs in aufs +- remount interface instead of ioctl +- maintain /etc/mtab by an external command, /sbin/mount.aufs. +- loopback mounted filesystem as a branch +- kernel thread for removing the dir who has a plenty of whiteouts +- support copyup sparse file (a file which has a 'hole' in it) +- default permission flags for branches +- selectable permission flags for ro branch, whether whiteout can + exist or not +- export via NFS. +- support /fs/aufs and /aufs. +- support multiple writable branches, some policies to select one + among multiple writable branches. +- a new semantics for link(2) and rename(2) to support multiple + writable branches. +- no glibc changes are required. +- pseudo hardlink (hardlink over branches) +- allow a direct access manually to a file on branch, e.g. bypassing aufs. + including NFS or remote filesystem branch. +- userspace wrapper for pathconf(3)/fpathconf(3) with _PC_LINK_MAX. +- and more... + +Currently these features are dropped temporary from aufs4. +See design/08plan.txt in detail. +- nested mount, i.e. aufs as readonly no-whiteout branch of another aufs + (robr) +- statistics of aufs thread (/sys/fs/aufs/stat) + +Features or just an idea in the future (see also design/*.txt), +- reorder the branch index without del/re-add. +- permanent xino files for NFSD +- an option for refreshing the opened files after add/del branches +- light version, without branch manipulation. (unnecessary?) +- copyup in userspace +- inotify in userspace +- readv/writev + + +2. Download +---------------------------------------- +There are three GIT trees for aufs4, aufs4-linux.git, +aufs4-standalone.git, and aufs-util.git. Note that there is no "4" in +"aufs-util.git." +While the aufs-util is always necessary, you need either of aufs4-linux +or aufs4-standalone. + +The aufs4-linux tree includes the whole linux mainline GIT tree, +git://git.kernel.org/.../torvalds/linux.git. +And you cannot select CONFIG_AUFS_FS=m for this version, eg. you cannot +build aufs4 as an external kernel module. +Several extra patches are not included in this tree. Only +aufs4-standalone tree contains them. They are described in the later +section "Configuration and Compilation." + +On the other hand, the aufs4-standalone tree has only aufs source files +and necessary patches, and you can select CONFIG_AUFS_FS=m. +But you need to apply all aufs patches manually. + +You will find GIT branches whose name is in form of "aufs4.x" where "x" +represents the linux kernel version, "linux-4.x". For instance, +"aufs4.0" is for linux-4.0. For latest "linux-4.x-rcN", use +"aufs4.x-rcN" branch. + +o aufs4-linux tree +$ git clone --reference /your/linux/git/tree \ + git://github.com/sfjro/aufs4-linux.git aufs4-linux.git +- if you don't have linux GIT tree, then remove "--reference ..." +$ cd aufs4-linux.git +$ git checkout origin/aufs4.0 + +Or You may want to directly git-pull aufs into your linux GIT tree, and +leave the patch-work to GIT. +$ cd /your/linux/git/tree +$ git remote add aufs4 git://github.com/sfjro/aufs4-linux.git +$ git fetch aufs4 +$ git checkout -b my4.0 v4.0 +$ (add your local change...) +$ git pull aufs4 aufs4.0 +- now you have v4.0 + your_changes + aufs4.0 in you my4.0 branch. +- you may need to solve some conflicts between your_changes and + aufs4.0. in this case, git-rerere is recommended so that you can + solve the similar conflicts automatically when you upgrade to 4.1 or + later in the future. + +o aufs4-standalone tree +$ git clone git://github.com/sfjro/aufs4-standalone.git aufs4-standalone.git +$ cd aufs4-standalone.git +$ git checkout origin/aufs4.0 + +o aufs-util tree +$ git clone git://git.code.sf.net/p/aufs/aufs-util aufs-util.git +- note that the public aufs-util.git is on SourceForge instead of + GitHUB. +$ cd aufs-util.git +$ git checkout origin/aufs4.0 + +Note: The 4.x-rcN branch is to be used with `rc' kernel versions ONLY. +The minor version number, 'x' in '4.x', of aufs may not always +follow the minor version number of the kernel. +Because changes in the kernel that cause the use of a new +minor version number do not always require changes to aufs-util. + +Since aufs-util has its own minor version number, you may not be +able to find a GIT branch in aufs-util for your kernel's +exact minor version number. +In this case, you should git-checkout the branch for the +nearest lower number. + +For (an unreleased) example: +If you are using "linux-4.10" and the "aufs4.10" branch +does not exist in aufs-util repository, then "aufs4.9", "aufs4.8" +or something numerically smaller is the branch for your kernel. + +Also you can view all branches by + $ git branch -a + + +3. Configuration and Compilation +---------------------------------------- +Make sure you have git-checkout'ed the correct branch. + +For aufs4-linux tree, +- enable CONFIG_AUFS_FS. +- set other aufs configurations if necessary. + +For aufs4-standalone tree, +There are several ways to build. + +1. +- apply ./aufs4-kbuild.patch to your kernel source files. +- apply ./aufs4-base.patch too. +- apply ./aufs4-mmap.patch too. +- apply ./aufs4-standalone.patch too, if you have a plan to set + CONFIG_AUFS_FS=m. otherwise you don't need ./aufs4-standalone.patch. +- copy ./{Documentation,fs,include/uapi/linux/aufs_type.h} files to your + kernel source tree. Never copy $PWD/include/uapi/linux/Kbuild. +- enable CONFIG_AUFS_FS, you can select either + =m or =y. +- and build your kernel as usual. +- install the built kernel. + Note: Since linux-3.9, every filesystem module requires an alias + "fs-". You should make sure that "fs-aufs" is listed in your + modules.aliases file if you set CONFIG_AUFS_FS=m. +- install the header files too by "make headers_install" to the + directory where you specify. By default, it is $PWD/usr. + "make help" shows a brief note for headers_install. +- and reboot your system. + +2. +- module only (CONFIG_AUFS_FS=m). +- apply ./aufs4-base.patch to your kernel source files. +- apply ./aufs4-mmap.patch too. +- apply ./aufs4-standalone.patch too. +- build your kernel, don't forget "make headers_install", and reboot. +- edit ./config.mk and set other aufs configurations if necessary. + Note: You should read $PWD/fs/aufs/Kconfig carefully which describes + every aufs configurations. +- build the module by simple "make". + Note: Since linux-3.9, every filesystem module requires an alias + "fs-". You should make sure that "fs-aufs" is listed in your + modules.aliases file. +- you can specify ${KDIR} make variable which points to your kernel + source tree. +- install the files + + run "make install" to install the aufs module, or copy the built + $PWD/aufs.ko to /lib/modules/... and run depmod -a (or reboot simply). + + run "make install_headers" (instead of headers_install) to install + the modified aufs header file (you can specify DESTDIR which is + available in aufs standalone version's Makefile only), or copy + $PWD/usr/include/linux/aufs_type.h to /usr/include/linux or wherever + you like manually. By default, the target directory is $PWD/usr. +- no need to apply aufs4-kbuild.patch, nor copying source files to your + kernel source tree. + +Note: The header file aufs_type.h is necessary to build aufs-util + as well as "make headers_install" in the kernel source tree. + headers_install is subject to be forgotten, but it is essentially + necessary, not only for building aufs-util. + You may not meet problems without headers_install in some older + version though. + +And then, +- read README in aufs-util, build and install it +- note that your distribution may contain an obsoleted version of + aufs_type.h in /usr/include/linux or something. When you build aufs + utilities, make sure that your compiler refers the correct aufs header + file which is built by "make headers_install." +- if you want to use readdir(3) in userspace or pathconf(3) wrapper, + then run "make install_ulib" too. And refer to the aufs manual in + detail. + +There several other patches in aufs4-standalone.git. They are all +optional. When you meet some problems, they will help you. +- aufs4-loopback.patch + Supports a nested loopback mount in a branch-fs. This patch is + unnecessary until aufs produces a message like "you may want to try + another patch for loopback file". +- vfs-ino.patch + Modifies a system global kernel internal function get_next_ino() in + order to stop assigning 0 for an inode-number. Not directly related to + aufs, but recommended generally. +- tmpfs-idr.patch + Keeps the tmpfs inode number as the lowest value. Effective to reduce + the size of aufs XINO files for tmpfs branch. Also it prevents the + duplication of inode number, which is important for backup tools and + other utilities. When you find aufs XINO files for tmpfs branch + growing too much, try this patch. +- lockdep-debug.patch + Because aufs is not only an ordinary filesystem (callee of VFS), but + also a caller of VFS functions for branch filesystems, subclassing of + the internal locks for LOCKDEP is necessary. LOCKDEP is a debugging + feature of linux kernel. If you enable CONFIG_LOCKDEP, then you will + need to apply this debug patch to expand several constant values. + If don't know what LOCKDEP, then you don't have apply this patch. + + +4. Usage +---------------------------------------- +At first, make sure aufs-util are installed, and please read the aufs +manual, aufs.5 in aufs-util.git tree. +$ man -l aufs.5 + +And then, +$ mkdir /tmp/rw /tmp/aufs +# mount -t aufs -o br=/tmp/rw:${HOME} none /tmp/aufs + +Here is another example. The result is equivalent. +# mount -t aufs -o br=/tmp/rw=rw:${HOME}=ro none /tmp/aufs + Or +# mount -t aufs -o br:/tmp/rw none /tmp/aufs +# mount -o remount,append:${HOME} /tmp/aufs + +Then, you can see whole tree of your home dir through /tmp/aufs. If +you modify a file under /tmp/aufs, the one on your home directory is +not affected, instead the same named file will be newly created under +/tmp/rw. And all of your modification to a file will be applied to +the one under /tmp/rw. This is called the file based Copy on Write +(COW) method. +Aufs mount options are described in aufs.5. +If you run chroot or something and make your aufs as a root directory, +then you need to customize the shutdown script. See the aufs manual in +detail. + +Additionally, there are some sample usages of aufs which are a +diskless system with network booting, and LiveCD over NFS. +See sample dir in CVS tree on SourceForge. + + +5. Contact +---------------------------------------- +When you have any problems or strange behaviour in aufs, please let me +know with: +- /proc/mounts (instead of the output of mount(8)) +- /sys/module/aufs/* +- /sys/fs/aufs/* (if you have them) +- /debug/aufs/* (if you have them) +- linux kernel version + if your kernel is not plain, for example modified by distributor, + the url where i can download its source is necessary too. +- aufs version which was printed at loading the module or booting the + system, instead of the date you downloaded. +- configuration (define/undefine CONFIG_AUFS_xxx) +- kernel configuration or /proc/config.gz (if you have it) +- behaviour which you think to be incorrect +- actual operation, reproducible one is better +- mailto: aufs-users at lists.sourceforge.net + +Usually, I don't watch the Public Areas(Bugs, Support Requests, Patches, +and Feature Requests) on SourceForge. Please join and write to +aufs-users ML. + + +6. Acknowledgements +---------------------------------------- +Thanks to everyone who have tried and are using aufs, whoever +have reported a bug or any feedback. + +Especially donators: +Tomas Matejicek(slax.org) made a donation (much more than once). + Since Apr 2010, Tomas M (the author of Slax and Linux Live + scripts) is making "doubling" donations. + Unfortunately I cannot list all of the donators, but I really + appreciate. + It ends Aug 2010, but the ordinary donation URL is still available. + +Dai Itasaka made a donation (2007/8). +Chuck Smith made a donation (2008/4, 10 and 12). +Henk Schoneveld made a donation (2008/9). +Chih-Wei Huang, ASUS, CTC donated Eee PC 4G (2008/10). +Francois Dupoux made a donation (2008/11). +Bruno Cesar Ribas and Luis Carlos Erpen de Bona, C3SL serves public + aufs2 GIT tree (2009/2). +William Grant made a donation (2009/3). +Patrick Lane made a donation (2009/4). +The Mail Archive (mail-archive.com) made donations (2009/5). +Nippy Networks (Ed Wildgoose) made a donation (2009/7). +New Dream Network, LLC (www.dreamhost.com) made a donation (2009/11). +Pavel Pronskiy made a donation (2011/2). +Iridium and Inmarsat satellite phone retailer (www.mailasail.com), Nippy + Networks (Ed Wildgoose) made a donation for hardware (2011/3). +Max Lekomcev (DOM-TV project) made a donation (2011/7, 12, 2012/3, 6 and +11). +Sam Liddicott made a donation (2011/9). +Era Scarecrow made a donation (2013/4). +Bor Ratajc made a donation (2013/4). +Alessandro Gorreta made a donation (2013/4). +POIRETTE Marc made a donation (2013/4). +Alessandro Gorreta made a donation (2013/4). +lauri kasvandik made a donation (2013/5). +"pemasu from Finland" made a donation (2013/7). +The Parted Magic Project made a donation (2013/9 and 11). +Pavel Barta made a donation (2013/10). +Nikolay Pertsev made a donation (2014/5). +James B made a donation (2014/7 and 2015/7). +Stefano Di Biase made a donation (2014/8). +Daniel Epellei made a donation (2015/1). +OmegaPhil made a donation (2016/1, 2018/4). +Tomasz Szewczyk made a donation (2016/4). +James Burry made a donation (2016/12). + +Thank you very much. +Donations are always, including future donations, very important and +helpful for me to keep on developing aufs. + + +7. +---------------------------------------- +If you are an experienced user, no explanation is needed. Aufs is +just a linux filesystem. + + +Enjoy! + +# Local variables: ; +# mode: text; +# End: ; diff --git a/Documentation/filesystems/aufs/design/01intro.txt b/Documentation/filesystems/aufs/design/01intro.txt new file mode 100644 index 00000000000..aa10529823e --- /dev/null +++ b/Documentation/filesystems/aufs/design/01intro.txt @@ -0,0 +1,171 @@ + +# Copyright (C) 2005-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +Introduction +---------------------------------------- + +aufs [ei ju: ef es] | /ey-yoo-ef-es/ | [a u f s] +1. abbrev. for "advanced multi-layered unification filesystem". +2. abbrev. for "another unionfs". +3. abbrev. for "auf das" in German which means "on the" in English. + Ex. "Butter aufs Brot"(G) means "butter onto bread"(E). + But "Filesystem aufs Filesystem" is hard to understand. +4. abbrev. for "African Urban Fashion Show". + +AUFS is a filesystem with features: +- multi layered stackable unification filesystem, the member directory + is called as a branch. +- branch permission and attribute, 'readonly', 'real-readonly', + 'readwrite', 'whiteout-able', 'link-able whiteout', etc. and their + combination. +- internal "file copy-on-write". +- logical deletion, whiteout. +- dynamic branch manipulation, adding, deleting and changing permission. +- allow bypassing aufs, user's direct branch access. +- external inode number translation table and bitmap which maintains the + persistent aufs inode number. +- seekable directory, including NFS readdir. +- file mapping, mmap and sharing pages. +- pseudo-link, hardlink over branches. +- loopback mounted filesystem as a branch. +- several policies to select one among multiple writable branches. +- revert a single systemcall when an error occurs in aufs. +- and more... + + +Multi Layered Stackable Unification Filesystem +---------------------------------------------------------------------- +Most people already knows what it is. +It is a filesystem which unifies several directories and provides a +merged single directory. When users access a file, the access will be +passed/re-directed/converted (sorry, I am not sure which English word is +correct) to the real file on the member filesystem. The member +filesystem is called 'lower filesystem' or 'branch' and has a mode +'readonly' and 'readwrite.' And the deletion for a file on the lower +readonly branch is handled by creating 'whiteout' on the upper writable +branch. + +On LKML, there have been discussions about UnionMount (Jan Blunck, +Bharata B Rao and Valerie Aurora) and Unionfs (Erez Zadok). They took +different approaches to implement the merged-view. +The former tries putting it into VFS, and the latter implements as a +separate filesystem. +(If I misunderstand about these implementations, please let me know and +I shall correct it. Because it is a long time ago when I read their +source files last time). + +UnionMount's approach will be able to small, but may be hard to share +branches between several UnionMount since the whiteout in it is +implemented in the inode on branch filesystem and always +shared. According to Bharata's post, readdir does not seems to be +finished yet. +There are several missing features known in this implementations such as +- for users, the inode number may change silently. eg. copy-up. +- link(2) may break by copy-up. +- read(2) may get an obsoleted filedata (fstat(2) too). +- fcntl(F_SETLK) may be broken by copy-up. +- unnecessary copy-up may happen, for example mmap(MAP_PRIVATE) after + open(O_RDWR). + +In linux-3.18, "overlay" filesystem (formerly known as "overlayfs") was +merged into mainline. This is another implementation of UnionMount as a +separated filesystem. All the limitations and known problems which +UnionMount are equally inherited to "overlay" filesystem. + +Unionfs has a longer history. When I started implementing a stackable +filesystem (Aug 2005), it already existed. It has virtual super_block, +inode, dentry and file objects and they have an array pointing lower +same kind objects. After contributing many patches for Unionfs, I +re-started my project AUFS (Jun 2006). + +In AUFS, the structure of filesystem resembles to Unionfs, but I +implemented my own ideas, approaches and enhancements and it became +totally different one. + +Comparing DM snapshot and fs based implementation +- the number of bytes to be copied between devices is much smaller. +- the type of filesystem must be one and only. +- the fs must be writable, no readonly fs, even for the lower original + device. so the compression fs will not be usable. but if we use + loopback mount, we may address this issue. + for instance, + mount /cdrom/squashfs.img /sq + losetup /sq/ext2.img + losetup /somewhere/cow + dmsetup "snapshot /dev/loop0 /dev/loop1 ..." +- it will be difficult (or needs more operations) to extract the + difference between the original device and COW. +- DM snapshot-merge may help a lot when users try merging. in the + fs-layer union, users will use rsync(1). + +You may want to read my old paper "Filesystems in LiveCD" +(http://aufs.sourceforge.net/aufs2/report/sq/sq.pdf). + + +Several characters/aspects/persona of aufs +---------------------------------------------------------------------- + +Aufs has several characters, aspects or persona. +1. a filesystem, callee of VFS helper +2. sub-VFS, caller of VFS helper for branches +3. a virtual filesystem which maintains persistent inode number +4. reader/writer of files on branches such like an application + +1. Callee of VFS Helper +As an ordinary linux filesystem, aufs is a callee of VFS. For instance, +unlink(2) from an application reaches sys_unlink() kernel function and +then vfs_unlink() is called. vfs_unlink() is one of VFS helper and it +calls filesystem specific unlink operation. Actually aufs implements the +unlink operation but it behaves like a redirector. + +2. Caller of VFS Helper for Branches +aufs_unlink() passes the unlink request to the branch filesystem as if +it were called from VFS. So the called unlink operation of the branch +filesystem acts as usual. As a caller of VFS helper, aufs should handle +every necessary pre/post operation for the branch filesystem. +- acquire the lock for the parent dir on a branch +- lookup in a branch +- revalidate dentry on a branch +- mnt_want_write() for a branch +- vfs_unlink() for a branch +- mnt_drop_write() for a branch +- release the lock on a branch + +3. Persistent Inode Number +One of the most important issue for a filesystem is to maintain inode +numbers. This is particularly important to support exporting a +filesystem via NFS. Aufs is a virtual filesystem which doesn't have a +backend block device for its own. But some storage is necessary to +keep and maintain the inode numbers. It may be a large space and may not +suit to keep in memory. Aufs rents some space from its first writable +branch filesystem (by default) and creates file(s) on it. These files +are created by aufs internally and removed soon (currently) keeping +opened. +Note: Because these files are removed, they are totally gone after + unmounting aufs. It means the inode numbers are not persistent + across unmount or reboot. I have a plan to make them really + persistent which will be important for aufs on NFS server. + +4. Read/Write Files Internally (copy-on-write) +Because a branch can be readonly, when you write a file on it, aufs will +"copy-up" it to the upper writable branch internally. And then write the +originally requested thing to the file. Generally kernel doesn't +open/read/write file actively. In aufs, even a single write may cause a +internal "file copy". This behaviour is very similar to cp(1) command. + +Some people may think it is better to pass such work to user space +helper, instead of doing in kernel space. Actually I am still thinking +about it. But currently I have implemented it in kernel space. diff --git a/Documentation/filesystems/aufs/design/02struct.txt b/Documentation/filesystems/aufs/design/02struct.txt new file mode 100644 index 00000000000..f5fb6a8add2 --- /dev/null +++ b/Documentation/filesystems/aufs/design/02struct.txt @@ -0,0 +1,258 @@ + +# Copyright (C) 2005-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +Basic Aufs Internal Structure + +Superblock/Inode/Dentry/File Objects +---------------------------------------------------------------------- +As like an ordinary filesystem, aufs has its own +superblock/inode/dentry/file objects. All these objects have a +dynamically allocated array and store the same kind of pointers to the +lower filesystem, branch. +For example, when you build a union with one readwrite branch and one +readonly, mounted /au, /rw and /ro respectively. +- /au = /rw + /ro +- /ro/fileA exists but /rw/fileA + +Aufs lookup operation finds /ro/fileA and gets dentry for that. These +pointers are stored in a aufs dentry. The array in aufs dentry will be, +- [0] = NULL (because /rw/fileA doesn't exist) +- [1] = /ro/fileA + +This style of an array is essentially same to the aufs +superblock/inode/dentry/file objects. + +Because aufs supports manipulating branches, ie. add/delete/change +branches dynamically, these objects has its own generation. When +branches are changed, the generation in aufs superblock is +incremented. And a generation in other object are compared when it is +accessed. When a generation in other objects are obsoleted, aufs +refreshes the internal array. + + +Superblock +---------------------------------------------------------------------- +Additionally aufs superblock has some data for policies to select one +among multiple writable branches, XIB files, pseudo-links and kobject. +See below in detail. +About the policies which supports copy-down a directory, see +wbr_policy.txt too. + + +Branch and XINO(External Inode Number Translation Table) +---------------------------------------------------------------------- +Every branch has its own xino (external inode number translation table) +file. The xino file is created and unlinked by aufs internally. When two +members of a union exist on the same filesystem, they share the single +xino file. +The struct of a xino file is simple, just a sequence of aufs inode +numbers which is indexed by the lower inode number. +In the above sample, assume the inode number of /ro/fileA is i111 and +aufs assigns the inode number i999 for fileA. Then aufs writes 999 as +4(8) bytes at 111 * 4(8) bytes offset in the xino file. + +When the inode numbers are not contiguous, the xino file will be sparse +which has a hole in it and doesn't consume as much disk space as it +might appear. If your branch filesystem consumes disk space for such +holes, then you should specify 'xino=' option at mounting aufs. + +Aufs has a mount option to free the disk blocks for such holes in XINO +files on tmpfs or ramdisk. But it is not so effective actually. If you +meet a problem of disk shortage due to XINO files, then you should try +"tmpfs-ino.patch" (and "vfs-ino.patch" too) in aufs4-standalone.git. +The patch localizes the assignment inumbers per tmpfs-mount and avoid +the holes in XINO files. + +Also a writable branch has three kinds of "whiteout bases". All these +are existed when the branch is joined to aufs, and their names are +whiteout-ed doubly, so that users will never see their names in aufs +hierarchy. +1. a regular file which will be hardlinked to all whiteouts. +2. a directory to store a pseudo-link. +3. a directory to store an "orphan"-ed file temporary. + +1. Whiteout Base + When you remove a file on a readonly branch, aufs handles it as a + logical deletion and creates a whiteout on the upper writable branch + as a hardlink of this file in order not to consume inode on the + writable branch. +2. Pseudo-link Dir + See below, Pseudo-link. +3. Step-Parent Dir + When "fileC" exists on the lower readonly branch only and it is + opened and removed with its parent dir, and then user writes + something into it, then aufs copies-up fileC to this + directory. Because there is no other dir to store fileC. After + creating a file under this dir, the file is unlinked. + +Because aufs supports manipulating branches, ie. add/delete/change +dynamically, a branch has its own id. When the branch order changes, +aufs finds the new index by searching the branch id. + + +Pseudo-link +---------------------------------------------------------------------- +Assume "fileA" exists on the lower readonly branch only and it is +hardlinked to "fileB" on the branch. When you write something to fileA, +aufs copies-up it to the upper writable branch. Additionally aufs +creates a hardlink under the Pseudo-link Directory of the writable +branch. The inode of a pseudo-link is kept in aufs super_block as a +simple list. If fileB is read after unlinking fileA, aufs returns +filedata from the pseudo-link instead of the lower readonly +branch. Because the pseudo-link is based upon the inode, to keep the +inode number by xino (see above) is essentially necessary. + +All the hardlinks under the Pseudo-link Directory of the writable branch +should be restored in a proper location later. Aufs provides a utility +to do this. The userspace helpers executed at remounting and unmounting +aufs by default. +During this utility is running, it puts aufs into the pseudo-link +maintenance mode. In this mode, only the process which began the +maintenance mode (and its child processes) is allowed to operate in +aufs. Some other processes which are not related to the pseudo-link will +be allowed to run too, but the rest have to return an error or wait +until the maintenance mode ends. If a process already acquires an inode +mutex (in VFS), it has to return an error. + + +XIB(external inode number bitmap) +---------------------------------------------------------------------- +Addition to the xino file per a branch, aufs has an external inode number +bitmap in a superblock object. It is also an internal file such like a +xino file. +It is a simple bitmap to mark whether the aufs inode number is in-use or +not. +To reduce the file I/O, aufs prepares a single memory page to cache xib. + +As well as XINO files, aufs has a feature to truncate/refresh XIB to +reduce the number of consumed disk blocks for these files. + + +Virtual or Vertical Dir, and Readdir in Userspace +---------------------------------------------------------------------- +In order to support multiple layers (branches), aufs readdir operation +constructs a virtual dir block on memory. For readdir, aufs calls +vfs_readdir() internally for each dir on branches, merges their entries +with eliminating the whiteout-ed ones, and sets it to file (dir) +object. So the file object has its entry list until it is closed. The +entry list will be updated when the file position is zero and becomes +obsoleted. This decision is made in aufs automatically. + +The dynamically allocated memory block for the name of entries has a +unit of 512 bytes (by default) and stores the names contiguously (no +padding). Another block for each entry is handled by kmem_cache too. +During building dir blocks, aufs creates hash list and judging whether +the entry is whiteouted by its upper branch or already listed. +The merged result is cached in the corresponding inode object and +maintained by a customizable life-time option. + +Some people may call it can be a security hole or invite DoS attack +since the opened and once readdir-ed dir (file object) holds its entry +list and becomes a pressure for system memory. But I'd say it is similar +to files under /proc or /sys. The virtual files in them also holds a +memory page (generally) while they are opened. When an idea to reduce +memory for them is introduced, it will be applied to aufs too. +For those who really hate this situation, I've developed readdir(3) +library which operates this merging in userspace. You just need to set +LD_PRELOAD environment variable, and aufs will not consume no memory in +kernel space for readdir(3). + + +Workqueue +---------------------------------------------------------------------- +Aufs sometimes requires privilege access to a branch. For instance, +in copy-up/down operation. When a user process is going to make changes +to a file which exists in the lower readonly branch only, and the mode +of one of ancestor directories may not be writable by a user +process. Here aufs copy-up the file with its ancestors and they may +require privilege to set its owner/group/mode/etc. +This is a typical case of a application character of aufs (see +Introduction). + +Aufs uses workqueue synchronously for this case. It creates its own +workqueue. The workqueue is a kernel thread and has privilege. Aufs +passes the request to call mkdir or write (for example), and wait for +its completion. This approach solves a problem of a signal handler +simply. +If aufs didn't adopt the workqueue and changed the privilege of the +process, then the process may receive the unexpected SIGXFSZ or other +signals. + +Also aufs uses the system global workqueue ("events" kernel thread) too +for asynchronous tasks, such like handling inotify/fsnotify, re-creating a +whiteout base and etc. This is unrelated to a privilege. +Most of aufs operation tries acquiring a rw_semaphore for aufs +superblock at the beginning, at the same time waits for the completion +of all queued asynchronous tasks. + + +Whiteout +---------------------------------------------------------------------- +The whiteout in aufs is very similar to Unionfs's. That is represented +by its filename. UnionMount takes an approach of a file mode, but I am +afraid several utilities (find(1) or something) will have to support it. + +Basically the whiteout represents "logical deletion" which stops aufs to +lookup further, but also it represents "dir is opaque" which also stop +further lookup. + +In aufs, rmdir(2) and rename(2) for dir uses whiteout alternatively. +In order to make several functions in a single systemcall to be +revertible, aufs adopts an approach to rename a directory to a temporary +unique whiteouted name. +For example, in rename(2) dir where the target dir already existed, aufs +renames the target dir to a temporary unique whiteouted name before the +actual rename on a branch, and then handles other actions (make it opaque, +update the attributes, etc). If an error happens in these actions, aufs +simply renames the whiteouted name back and returns an error. If all are +succeeded, aufs registers a function to remove the whiteouted unique +temporary name completely and asynchronously to the system global +workqueue. + + +Copy-up +---------------------------------------------------------------------- +It is a well-known feature or concept. +When user modifies a file on a readonly branch, aufs operate "copy-up" +internally and makes change to the new file on the upper writable branch. +When the trigger systemcall does not update the timestamps of the parent +dir, aufs reverts it after copy-up. + + +Move-down (aufs3.9 and later) +---------------------------------------------------------------------- +"Copy-up" is one of the essential feature in aufs. It copies a file from +the lower readonly branch to the upper writable branch when a user +changes something about the file. +"Move-down" is an opposite action of copy-up. Basically this action is +ran manually instead of automatically and internally. +For desgin and implementation, aufs has to consider these issues. +- whiteout for the file may exist on the lower branch. +- ancestor directories may not exist on the lower branch. +- diropq for the ancestor directories may exist on the upper branch. +- free space on the lower branch will reduce. +- another access to the file may happen during moving-down, including + UDBA (see "Revalidate Dentry and UDBA"). +- the file should not be hard-linked nor pseudo-linked. they should be + handled by auplink utility later. + +Sometimes users want to move-down a file from the upper writable branch +to the lower readonly or writable branch. For instance, +- the free space of the upper writable branch is going to run out. +- create a new intermediate branch between the upper and lower branch. +- etc. + +For this purpose, use "aumvdown" command in aufs-util.git. diff --git a/Documentation/filesystems/aufs/design/03atomic_open.txt b/Documentation/filesystems/aufs/design/03atomic_open.txt new file mode 100644 index 00000000000..1b0699f8bce --- /dev/null +++ b/Documentation/filesystems/aufs/design/03atomic_open.txt @@ -0,0 +1,85 @@ + +# Copyright (C) 2015-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +Support for a branch who has its ->atomic_open() +---------------------------------------------------------------------- +The filesystems who implement its ->atomic_open() are not majority. For +example NFSv4 does, and aufs should call NFSv4 ->atomic_open, +particularly for open(O_CREAT|O_EXCL, 0400) case. Other than +->atomic_open(), NFSv4 returns an error for this open(2). While I am not +sure whether all filesystems who have ->atomic_open() behave like this, +but NFSv4 surely returns the error. + +In order to support ->atomic_open() for aufs, there are a few +approaches. + +A. Introduce aufs_atomic_open() + - calls one of VFS:do_last(), lookup_open() or atomic_open() for + branch fs. +B. Introduce aufs_atomic_open() calling create, open and chmod. this is + an aufs user Pip Cet's approach + - calls aufs_create(), VFS finish_open() and notify_change(). + - pass fake-mode to finish_open(), and then correct the mode by + notify_change(). +C. Extend aufs_open() to call branch fs's ->atomic_open() + - no aufs_atomic_open(). + - aufs_lookup() registers the TID to an aufs internal object. + - aufs_create() does nothing when the matching TID is registered, but + registers the mode. + - aufs_open() calls branch fs's ->atomic_open() when the matching + TID is registered. +D. Extend aufs_open() to re-try branch fs's ->open() with superuser's + credential + - no aufs_atomic_open(). + - aufs_create() registers the TID to an internal object. this info + represents "this process created this file just now." + - when aufs gets EACCES from branch fs's ->open(), then confirm the + registered TID and re-try open() with superuser's credential. + +Pros and cons for each approach. + +A. + - straightforward but highly depends upon VFS internal. + - the atomic behavaiour is kept. + - some of parameters such as nameidata are hard to reproduce for + branch fs. + - large overhead. +B. + - easy to implement. + - the atomic behavaiour is lost. +C. + - the atomic behavaiour is kept. + - dirty and tricky. + - VFS checks whether the file is created correctly after calling + ->create(), which means this approach doesn't work. +D. + - easy to implement. + - the atomic behavaiour is lost. + - to open a file with superuser's credential and give it to a user + process is a bad idea, since the file object keeps the credential + in it. It may affect LSM or something. This approach doesn't work + either. + +The approach A is ideal, but it hard to implement. So here is a +variation of A, which is to be implemented. + +A-1. Introduce aufs_atomic_open() + - calls branch fs ->atomic_open() if exists. otherwise calls + vfs_create() and finish_open(). + - the demerit is that the several checks after branch fs + ->atomic_open() are lost. in the ordinary case, the checks are + done by VFS:do_last(), lookup_open() and atomic_open(). some can + be implemented in aufs, but not all I am afraid. diff --git a/Documentation/filesystems/aufs/design/03lookup.txt b/Documentation/filesystems/aufs/design/03lookup.txt new file mode 100644 index 00000000000..80ae63bcec5 --- /dev/null +++ b/Documentation/filesystems/aufs/design/03lookup.txt @@ -0,0 +1,113 @@ + +# Copyright (C) 2005-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +Lookup in a Branch +---------------------------------------------------------------------- +Since aufs has a character of sub-VFS (see Introduction), it operates +lookup for branches as VFS does. It may be a heavy work. But almost all +lookup operation in aufs is the simplest case, ie. lookup only an entry +directly connected to its parent. Digging down the directory hierarchy +is unnecessary. VFS has a function lookup_one_len() for that use, and +aufs calls it. + +When a branch is a remote filesystem, aufs basically relies upon its +->d_revalidate(), also aufs forces the hardest revalidate tests for +them. +For d_revalidate, aufs implements three levels of revalidate tests. See +"Revalidate Dentry and UDBA" in detail. + + +Test Only the Highest One for the Directory Permission (dirperm1 option) +---------------------------------------------------------------------- +Let's try case study. +- aufs has two branches, upper readwrite and lower readonly. + /au = /rw + /ro +- "dirA" exists under /ro, but /rw. and its mode is 0700. +- user invoked "chmod a+rx /au/dirA" +- the internal copy-up is activated and "/rw/dirA" is created and its + permission bits are set to world readable. +- then "/au/dirA" becomes world readable? + +In this case, /ro/dirA is still 0700 since it exists in readonly branch, +or it may be a natively readonly filesystem. If aufs respects the lower +branch, it should not respond readdir request from other users. But user +allowed it by chmod. Should really aufs rejects showing the entries +under /ro/dirA? + +To be honest, I don't have a good solution for this case. So aufs +implements 'dirperm1' and 'nodirperm1' mount options, and leave it to +users. +When dirperm1 is specified, aufs checks only the highest one for the +directory permission, and shows the entries. Otherwise, as usual, checks +every dir existing on all branches and rejects the request. + +As a side effect, dirperm1 option improves the performance of aufs +because the number of permission check is reduced when the number of +branch is many. + + +Revalidate Dentry and UDBA (User's Direct Branch Access) +---------------------------------------------------------------------- +Generally VFS helpers re-validate a dentry as a part of lookup. +0. digging down the directory hierarchy. +1. lock the parent dir by its i_mutex. +2. lookup the final (child) entry. +3. revalidate it. +4. call the actual operation (create, unlink, etc.) +5. unlock the parent dir + +If the filesystem implements its ->d_revalidate() (step 3), then it is +called. Actually aufs implements it and checks the dentry on a branch is +still valid. +But it is not enough. Because aufs has to release the lock for the +parent dir on a branch at the end of ->lookup() (step 2) and +->d_revalidate() (step 3) while the i_mutex of the aufs dir is still +held by VFS. +If the file on a branch is changed directly, eg. bypassing aufs, after +aufs released the lock, then the subsequent operation may cause +something unpleasant result. + +This situation is a result of VFS architecture, ->lookup() and +->d_revalidate() is separated. But I never say it is wrong. It is a good +design from VFS's point of view. It is just not suitable for sub-VFS +character in aufs. + +Aufs supports such case by three level of revalidation which is +selectable by user. +1. Simple Revalidate + Addition to the native flow in VFS's, confirm the child-parent + relationship on the branch just after locking the parent dir on the + branch in the "actual operation" (step 4). When this validation + fails, aufs returns EBUSY. ->d_revalidate() (step 3) in aufs still + checks the validation of the dentry on branches. +2. Monitor Changes Internally by Inotify/Fsnotify + Addition to above, in the "actual operation" (step 4) aufs re-lookup + the dentry on the branch, and returns EBUSY if it finds different + dentry. + Additionally, aufs sets the inotify/fsnotify watch for every dir on branches + during it is in cache. When the event is notified, aufs registers a + function to kernel 'events' thread by schedule_work(). And the + function sets some special status to the cached aufs dentry and inode + private data. If they are not cached, then aufs has nothing to + do. When the same file is accessed through aufs (step 0-3) later, + aufs will detect the status and refresh all necessary data. + In this mode, aufs has to ignore the event which is fired by aufs + itself. +3. No Extra Validation + This is the simplest test and doesn't add any additional revalidation + test, and skip the revalidation in step 4. It is useful and improves + aufs performance when system surely hide the aufs branches from user, + by over-mounting something (or another method). diff --git a/Documentation/filesystems/aufs/design/04branch.txt b/Documentation/filesystems/aufs/design/04branch.txt new file mode 100644 index 00000000000..0c128973731 --- /dev/null +++ b/Documentation/filesystems/aufs/design/04branch.txt @@ -0,0 +1,74 @@ + +# Copyright (C) 2005-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +Branch Manipulation + +Since aufs supports dynamic branch manipulation, ie. add/remove a branch +and changing its permission/attribute, there are a lot of works to do. + + +Add a Branch +---------------------------------------------------------------------- +o Confirm the adding dir exists outside of aufs, including loopback + mount, and its various attributes. +o Initialize the xino file and whiteout bases if necessary. + See struct.txt. + +o Check the owner/group/mode of the directory + When the owner/group/mode of the adding directory differs from the + existing branch, aufs issues a warning because it may impose a + security risk. + For example, when a upper writable branch has a world writable empty + top directory, a malicious user can create any files on the writable + branch directly, like copy-up and modify manually. If something like + /etc/{passwd,shadow} exists on the lower readonly branch but the upper + writable branch, and the writable branch is world-writable, then a + malicious guy may create /etc/passwd on the writable branch directly + and the infected file will be valid in aufs. + I am afraid it can be a security issue, but aufs can do nothing except + producing a warning. + + +Delete a Branch +---------------------------------------------------------------------- +o Confirm the deleting branch is not busy + To be general, there is one merit to adopt "remount" interface to + manipulate branches. It is to discard caches. At deleting a branch, + aufs checks the still cached (and connected) dentries and inodes. If + there are any, then they are all in-use. An inode without its + corresponding dentry can be alive alone (for example, inotify/fsnotify case). + + For the cached one, aufs checks whether the same named entry exists on + other branches. + If the cached one is a directory, because aufs provides a merged view + to users, as long as one dir is left on any branch aufs can show the + dir to users. In this case, the branch can be removed from aufs. + Otherwise aufs rejects deleting the branch. + + If any file on the deleting branch is opened by aufs, then aufs + rejects deleting. + + +Modify the Permission of a Branch +---------------------------------------------------------------------- +o Re-initialize or remove the xino file and whiteout bases if necessary. + See struct.txt. + +o rw --> ro: Confirm the modifying branch is not busy + Aufs rejects the request if any of these conditions are true. + - a file on the branch is mmap-ed. + - a regular file on the branch is opened for write and there is no + same named entry on the upper branch. diff --git a/Documentation/filesystems/aufs/design/05wbr_policy.txt b/Documentation/filesystems/aufs/design/05wbr_policy.txt new file mode 100644 index 00000000000..cc5b7979c21 --- /dev/null +++ b/Documentation/filesystems/aufs/design/05wbr_policy.txt @@ -0,0 +1,64 @@ + +# Copyright (C) 2005-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +Policies to Select One among Multiple Writable Branches +---------------------------------------------------------------------- +When the number of writable branch is more than one, aufs has to decide +the target branch for file creation or copy-up. By default, the highest +writable branch which has the parent (or ancestor) dir of the target +file is chosen (top-down-parent policy). +By user's request, aufs implements some other policies to select the +writable branch, for file creation several policies, round-robin, +most-free-space, and other policies. For copy-up, top-down-parent, +bottom-up-parent, bottom-up and others. + +As expected, the round-robin policy selects the branch in circular. When +you have two writable branches and creates 10 new files, 5 files will be +created for each branch. mkdir(2) systemcall is an exception. When you +create 10 new directories, all will be created on the same branch. +And the most-free-space policy selects the one which has most free +space among the writable branches. The amount of free space will be +checked by aufs internally, and users can specify its time interval. + +The policies for copy-up is more simple, +top-down-parent is equivalent to the same named on in create policy, +bottom-up-parent selects the writable branch where the parent dir +exists and the nearest upper one from the copyup-source, +bottom-up selects the nearest upper writable branch from the +copyup-source, regardless the existence of the parent dir. + +There are some rules or exceptions to apply these policies. +- If there is a readonly branch above the policy-selected branch and + the parent dir is marked as opaque (a variation of whiteout), or the + target (creating) file is whiteout-ed on the upper readonly branch, + then the result of the policy is ignored and the target file will be + created on the nearest upper writable branch than the readonly branch. +- If there is a writable branch above the policy-selected branch and + the parent dir is marked as opaque or the target file is whiteouted + on the branch, then the result of the policy is ignored and the target + file will be created on the highest one among the upper writable + branches who has diropq or whiteout. In case of whiteout, aufs removes + it as usual. +- link(2) and rename(2) systemcalls are exceptions in every policy. + They try selecting the branch where the source exists as possible + since copyup a large file will take long time. If it can't be, + ie. the branch where the source exists is readonly, then they will + follow the copyup policy. +- There is an exception for rename(2) when the target exists. + If the rename target exists, aufs compares the index of the branches + where the source and the target exists and selects the higher + one. If the selected branch is readonly, then aufs follows the + copyup policy. diff --git a/Documentation/filesystems/aufs/design/06dirren.dot b/Documentation/filesystems/aufs/design/06dirren.dot new file mode 100644 index 00000000000..2d62bb6dd55 --- /dev/null +++ b/Documentation/filesystems/aufs/design/06dirren.dot @@ -0,0 +1,31 @@ + +// to view this graph, run dot(1) command in GRAPHVIZ. + +digraph G { +node [shape=box]; +whinfo [label="detailed info file\n(lower_brid_root-hinum, h_inum, namelen, old name)"]; + +node [shape=oval]; + +aufs_rename -> whinfo [label="store/remove"]; + +node [shape=oval]; +inode_list [label="h_inum list in branch\ncache"]; + +node [shape=box]; +whinode [label="h_inum list file"]; + +node [shape=oval]; +brmgmt [label="br_add/del/mod/umount"]; + +brmgmt -> inode_list [label="create/remove"]; +brmgmt -> whinode [label="load/store"]; + +inode_list -> whinode [style=dashed,dir=both]; + +aufs_rename -> inode_list [label="add/del"]; + +aufs_lookup -> inode_list [label="search"]; + +aufs_lookup -> whinfo [label="load/remove"]; +} diff --git a/Documentation/filesystems/aufs/design/06dirren.txt b/Documentation/filesystems/aufs/design/06dirren.txt new file mode 100644 index 00000000000..1f3cb86d94f --- /dev/null +++ b/Documentation/filesystems/aufs/design/06dirren.txt @@ -0,0 +1,102 @@ + +# Copyright (C) 2017-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +Special handling for renaming a directory (DIRREN) +---------------------------------------------------------------------- +First, let's assume we have a simple usecase. + +- /u = /rw + /ro +- /rw/dirA exists +- /ro/dirA and /ro/dirA/file exist too +- there is no dirB on both branches +- a user issues rename("dirA", "dirB") + +Now, what should aufs behave against this rename(2)? +There are a few possible cases. + +A. returns EROFS. + since dirA exists on a readonly branch which cannot be renamed. +B. returns EXDEV. + it is possible to copy-up dirA (only the dir itself), but the child + entries ("file" in this case) should not be. it must be a bad + approach to copy-up recursively. +C. returns a success. + even the branch /ro is readonly, aufs tries renaming it. Obviously it + is a violation of aufs' policy. +D. construct an extra information which indicates that /ro/dirA should + be handled as the name of dirB. + overlayfs has a similar feature called REDIRECT. + +Until now, aufs implements the case B only which returns EXDEV, and +expects the userspace application behaves like mv(1) which tries +issueing rename(2) recursively. + +A new aufs feature called DIRREN is introduced which implements the case +D. There are several "extra information" added. + +1. detailed info per renamed directory + path: /rw/dirB/$AUFS_WH_DR_INFO_PFX. +2. the inode-number list of directories on a branch + path: /rw/dirB/$AUFS_WH_DR_BRHINO + +The filename of "detailed info per directory" represents the lower +branch, and its format is +- a type of the branch id + one of these. + + uuid (not implemented yet) + + fsid + + dev +- the inode-number of the branch root dir + +And it contains these info in a single regular file. +- magic number +- branch's inode-number of the logically renamed dir +- the name of the before-renamed dir + +The "detailed info per directory" file is created in aufs rename(2), and +loaded in any lookup. +The info is considered in lookup for the matching case only. Here +"matching" means that the root of branch (in the info filename) is same +to the current looking-up branch. After looking-up the before-renamed +name, the inode-number is compared. And the matched dentry is used. + +The "inode-number list of directories" is a regular file which contains +simply the inode-numbers on the branch. The file is created or updated +in removing the branch, and loaded in adding the branch. Its lifetime is +equal to the branch. +The list is refered in lookup, and when the current target inode is +found in the list, the aufs tries loading the "detailed info per +directory" and get the changed and valid name of the dir. + +Theoretically these "extra informaiton" may be able to be put into XATTR +in the dir inode. But aufs doesn't choose this way because +1. XATTR may not be supported by the branch (or its configuration) +2. XATTR may have its size limit. +3. XATTR may be less easy to convert than a regular file, when the + format of the info is changed in the future. +At the same time, I agree that the regular file approach is much slower +than XATTR approach. So, in the future, aufs may take the XATTR or other +better approach. + +This DIRREN feature is enabled by aufs configuration, and is activated +by a new mount option. + +For the more complicated case, there is a work with UDBA option, which +is to dected the direct access to the branches (by-passing aufs) and to +maintain the cashes in aufs. Since a single cached aufs dentry may +contains two names, before- and after-rename, the name comparision in +UDBA handler may not work correctly. In this case, the behaviour will be +equivalen to udba=reval case. diff --git a/Documentation/filesystems/aufs/design/06fhsm.txt b/Documentation/filesystems/aufs/design/06fhsm.txt new file mode 100644 index 00000000000..ddfebecdf1f --- /dev/null +++ b/Documentation/filesystems/aufs/design/06fhsm.txt @@ -0,0 +1,120 @@ + +# Copyright (C) 2011-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + +File-based Hierarchical Storage Management (FHSM) +---------------------------------------------------------------------- +Hierarchical Storage Management (or HSM) is a well-known feature in the +storage world. Aufs provides this feature as file-based with multiple +writable branches, based upon the principle of "Colder, the Lower". +Here the word "colder" means that the less used files, and "lower" means +that the position in the order of the stacked branches vertically. +These multiple writable branches are prioritized, ie. the topmost one +should be the fastest drive and be used heavily. + +o Characters in aufs FHSM story +- aufs itself and a new branch attribute. +- a new ioctl interface to move-down and to establish a connection with + the daemon ("move-down" is a converse of "copy-up"). +- userspace tool and daemon. + +The userspace daemon establishes a connection with aufs and waits for +the notification. The notified information is very similar to struct +statfs containing the number of consumed blocks and inodes. +When the consumed blocks/inodes of a branch exceeds the user-specified +upper watermark, the daemon activates its move-down process until the +consumed blocks/inodes reaches the user-specified lower watermark. + +The actual move-down is done by aufs based upon the request from +user-space since we need to maintain the inode number and the internal +pointer arrays in aufs. + +Currently aufs FHSM handles the regular files only. Additionally they +must not be hard-linked nor pseudo-linked. + + +o Cowork of aufs and the user-space daemon + During the userspace daemon established the connection, aufs sends a + small notification to it whenever aufs writes something into the + writable branch. But it may cost high since aufs issues statfs(2) + internally. So user can specify a new option to cache the + info. Actually the notification is controlled by these factors. + + the specified cache time. + + classified as "force" by aufs internally. + Until the specified time expires, aufs doesn't send the info + except the forced cases. When aufs decide forcing, the info is always + notified to userspace. + For example, the number of free inodes is generally large enough and + the shortage of it happens rarely. So aufs doesn't force the + notification when creating a new file, directory and others. This is + the typical case which aufs doesn't force. + When aufs writes the actual filedata and the files consumes any of new + blocks, the aufs forces notifying. + + +o Interfaces in aufs +- New branch attribute. + + fhsm + Specifies that the branch is managed by FHSM feature. In other word, + participant in the FHSM. + When nofhsm is set to the branch, it will not be the source/target + branch of the move-down operation. This attribute is set + independently from coo and moo attributes, and if you want full + FHSM, you should specify them as well. +- New mount option. + + fhsm_sec + Specifies a second to suppress many less important info to be + notified. +- New ioctl. + + AUFS_CTL_FHSM_FD + create a new file descriptor which userspace can read the notification + (a subset of struct statfs) from aufs. +- Module parameter 'brs' + It has to be set to 1. Otherwise the new mount option 'fhsm' will not + be set. +- mount helpers /sbin/mount.aufs and /sbin/umount.aufs + When there are two or more branches with fhsm attributes, + /sbin/mount.aufs invokes the user-space daemon and /sbin/umount.aufs + terminates it. As a result of remounting and branch-manipulation, the + number of branches with fhsm attribute can be one. In this case, + /sbin/mount.aufs will terminate the user-space daemon. + + +Finally the operation is done as these steps in kernel-space. +- make sure that, + + no one else is using the file. + + the file is not hard-linked. + + the file is not pseudo-linked. + + the file is a regular file. + + the parent dir is not opaqued. +- find the target writable branch. +- make sure the file is not whiteout-ed by the upper (than the target) + branch. +- make the parent dir on the target branch. +- mutex lock the inode on the branch. +- unlink the whiteout on the target branch (if exists). +- lookup and create the whiteout-ed temporary name on the target branch. +- copy the file as the whiteout-ed temporary name on the target branch. +- rename the whiteout-ed temporary name to the original name. +- unlink the file on the source branch. +- maintain the internal pointer array and the external inode number + table (XINO). +- maintain the timestamps and other attributes of the parent dir and the + file. + +And of course, in every step, an error may happen. So the operation +should restore the original file state after an error happens. diff --git a/Documentation/filesystems/aufs/design/06mmap.txt b/Documentation/filesystems/aufs/design/06mmap.txt new file mode 100644 index 00000000000..9a0a096b140 --- /dev/null +++ b/Documentation/filesystems/aufs/design/06mmap.txt @@ -0,0 +1,72 @@ + +# Copyright (C) 2005-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +mmap(2) -- File Memory Mapping +---------------------------------------------------------------------- +In aufs, the file-mapped pages are handled by a branch fs directly, no +interaction with aufs. It means aufs_mmap() calls the branch fs's +->mmap(). +This approach is simple and good, but there is one problem. +Under /proc, several entries show the mmapped files by its path (with +device and inode number), and the printed path will be the path on the +branch fs's instead of virtual aufs's. +This is not a problem in most cases, but some utilities lsof(1) (and its +user) may expect the path on aufs. + +To address this issue, aufs adds a new member called vm_prfile in struct +vm_area_struct (and struct vm_region). The original vm_file points to +the file on the branch fs in order to handle everything correctly as +usual. The new vm_prfile points to a virtual file in aufs, and the +show-functions in procfs refers to vm_prfile if it is set. +Also we need to maintain several other places where touching vm_file +such like +- fork()/clone() copies vma and the reference count of vm_file is + incremented. +- merging vma maintains the ref count too. + +This is not a good approach. It just fakes the printed path. But it +leaves all behaviour around f_mapping unchanged. This is surely an +advantage. +Actually aufs had adopted another complicated approach which calls +generic_file_mmap() and handles struct vm_operations_struct. In this +approach, aufs met a hard problem and I could not solve it without +switching the approach. + +There may be one more another approach which is +- bind-mount the branch-root onto the aufs-root internally +- grab the new vfsmount (ie. struct mount) +- lazy-umount the branch-root internally +- in open(2) the aufs-file, open the branch-file with the hidden + vfsmount (instead of the original branch's vfsmount) +- ideally this "bind-mount and lazy-umount" should be done atomically, + but it may be possible from userspace by the mount helper. + +Adding the internal hidden vfsmount and using it in opening a file, the +file path under /proc will be printed correctly. This approach looks +smarter, but is not possible I am afraid. +- aufs-root may be bind-mount later. when it happens, another hidden + vfsmount will be required. +- it is hard to get the chance to bind-mount and lazy-umount + + in kernel-space, FS can have vfsmount in open(2) via + file->f_path, and aufs can know its vfsmount. But several locks are + already acquired, and if aufs tries to bind-mount and lazy-umount + here, then it may cause a deadlock. + + in user-space, bind-mount doesn't invoke the mount helper. +- since /proc shows dev and ino, aufs has to give vma these info. it + means a new member vm_prinode will be necessary. this is essentially + equivalent to vm_prfile described above. + +I have to give up this "looks-smater" approach. diff --git a/Documentation/filesystems/aufs/design/06xattr.txt b/Documentation/filesystems/aufs/design/06xattr.txt new file mode 100644 index 00000000000..be441e8d35b --- /dev/null +++ b/Documentation/filesystems/aufs/design/06xattr.txt @@ -0,0 +1,96 @@ + +# Copyright (C) 2014-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + +Listing XATTR/EA and getting the value +---------------------------------------------------------------------- +For the inode standard attributes (owner, group, timestamps, etc.), aufs +shows the values from the topmost existing file. This behaviour is good +for the non-dir entries since the bahaviour exactly matches the shown +information. But for the directories, aufs considers all the same named +entries on the lower branches. Which means, if one of the lower entry +rejects readdir call, then aufs returns an error even if the topmost +entry allows it. This behaviour is necessary to respect the branch fs's +security, but can make users confused since the user-visible standard +attributes don't match the behaviour. +To address this issue, aufs has a mount option called dirperm1 which +checks the permission for the topmost entry only, and ignores the lower +entry's permission. + +A similar issue can happen around XATTR. +getxattr(2) and listxattr(2) families behave as if dirperm1 option is +always set. Otherwise these very unpleasant situation would happen. +- listxattr(2) may return the duplicated entries. +- users may not be able to remove or reset the XATTR forever, + + +XATTR/EA support in the internal (copy,move)-(up,down) +---------------------------------------------------------------------- +Generally the extended attributes of inode are categorized as these. +- "security" for LSM and capability. +- "system" for posix ACL, 'acl' mount option is required for the branch + fs generally. +- "trusted" for userspace, CAP_SYS_ADMIN is required. +- "user" for userspace, 'user_xattr' mount option is required for the + branch fs generally. + +Moreover there are some other categories. Aufs handles these rather +unpopular categories as the ordinary ones, ie. there is no special +condition nor exception. + +In copy-up, the support for XATTR on the dst branch may differ from the +src branch. In this case, the copy-up operation will get an error and +the original user operation which triggered the copy-up will fail. It +can happen that even all copy-up will fail. +When both of src and dst branches support XATTR and if an error occurs +during copying XATTR, then the copy-up should fail obviously. That is a +good reason and aufs should return an error to userspace. But when only +the src branch support that XATTR, aufs should not return an error. +For example, the src branch supports ACL but the dst branch doesn't +because the dst branch may natively un-support it or temporary +un-support it due to "noacl" mount option. Of course, the dst branch fs +may NOT return an error even if the XATTR is not supported. It is +totally up to the branch fs. + +Anyway when the aufs internal copy-up gets an error from the dst branch +fs, then aufs tries removing the just copied entry and returns the error +to the userspace. The worst case of this situation will be all copy-up +will fail. + +For the copy-up operation, there two basic approaches. +- copy the specified XATTR only (by category above), and return the + error unconditionally if it happens. +- copy all XATTR, and ignore the error on the specified category only. + +In order to support XATTR and to implement the correct behaviour, aufs +chooses the latter approach and introduces some new branch attributes, +"icexsec", "icexsys", "icextr", "icexusr", and "icexoth". +They correspond to the XATTR namespaces (see above). Additionally, to be +convenient, "icex" is also provided which means all "icex*" attributes +are set (here the word "icex" stands for "ignore copy-error on XATTR"). + +The meaning of these attributes is to ignore the error from setting +XATTR on that branch. +Note that aufs tries copying all XATTR unconditionally, and ignores the +error from the dst branch according to the specified attributes. + +Some XATTR may have its default value. The default value may come from +the parent dir or the environment. If the default value is set at the +file creating-time, it will be overwritten by copy-up. +Some contradiction may happen I am afraid. +Do we need another attribute to stop copying XATTR? I am unsure. For +now, aufs implements the branch attributes to ignore the error. diff --git a/Documentation/filesystems/aufs/design/07export.txt b/Documentation/filesystems/aufs/design/07export.txt new file mode 100644 index 00000000000..bb700cb18af --- /dev/null +++ b/Documentation/filesystems/aufs/design/07export.txt @@ -0,0 +1,58 @@ + +# Copyright (C) 2005-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +Export Aufs via NFS +---------------------------------------------------------------------- +Here is an approach. +- like xino/xib, add a new file 'xigen' which stores aufs inode + generation. +- iget_locked(): initialize aufs inode generation for a new inode, and + store it in xigen file. +- destroy_inode(): increment aufs inode generation and store it in xigen + file. it is necessary even if it is not unlinked, because any data of + inode may be changed by UDBA. +- encode_fh(): for a root dir, simply return FILEID_ROOT. otherwise + build file handle by + + branch id (4 bytes) + + superblock generation (4 bytes) + + inode number (4 or 8 bytes) + + parent dir inode number (4 or 8 bytes) + + inode generation (4 bytes)) + + return value of exportfs_encode_fh() for the parent on a branch (4 + bytes) + + file handle for a branch (by exportfs_encode_fh()) +- fh_to_dentry(): + + find the index of a branch from its id in handle, and check it is + still exist in aufs. + + 1st level: get the inode number from handle and search it in cache. + + 2nd level: if not found in cache, get the parent inode number from + the handle and search it in cache. and then open the found parent + dir, find the matching inode number by vfs_readdir() and get its + name, and call lookup_one_len() for the target dentry. + + 3rd level: if the parent dir is not cached, call + exportfs_decode_fh() for a branch and get the parent on a branch, + build a pathname of it, convert it a pathname in aufs, call + path_lookup(). now aufs gets a parent dir dentry, then handle it as + the 2nd level. + + to open the dir, aufs needs struct vfsmount. aufs keeps vfsmount + for every branch, but not itself. to get this, (currently) aufs + searches in current->nsproxy->mnt_ns list. it may not be a good + idea, but I didn't get other approach. + + test the generation of the gotten inode. +- every inode operation: they may get EBUSY due to UDBA. in this case, + convert it into ESTALE for NFSD. +- readdir(): call lockdep_on/off() because filldir in NFSD calls + lookup_one_len(), vfs_getattr(), encode_fh() and others. diff --git a/Documentation/filesystems/aufs/design/08shwh.txt b/Documentation/filesystems/aufs/design/08shwh.txt new file mode 100644 index 00000000000..1dad573f619 --- /dev/null +++ b/Documentation/filesystems/aufs/design/08shwh.txt @@ -0,0 +1,52 @@ + +# Copyright (C) 2005-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +Show Whiteout Mode (shwh) +---------------------------------------------------------------------- +Generally aufs hides the name of whiteouts. But in some cases, to show +them is very useful for users. For instance, creating a new middle layer +(branch) by merging existing layers. + +(borrowing aufs1 HOW-TO from a user, Michael Towers) +When you have three branches, +- Bottom: 'system', squashfs (underlying base system), read-only +- Middle: 'mods', squashfs, read-only +- Top: 'overlay', ram (tmpfs), read-write + +The top layer is loaded at boot time and saved at shutdown, to preserve +the changes made to the system during the session. +When larger changes have been made, or smaller changes have accumulated, +the size of the saved top layer data grows. At this point, it would be +nice to be able to merge the two overlay branches ('mods' and 'overlay') +and rewrite the 'mods' squashfs, clearing the top layer and thus +restoring save and load speed. + +This merging is simplified by the use of another aufs mount, of just the +two overlay branches using the 'shwh' option. +# mount -t aufs -o ro,shwh,br:/livesys/overlay=ro+wh:/livesys/mods=rr+wh \ + aufs /livesys/merge_union + +A merged view of these two branches is then available at +/livesys/merge_union, and the new feature is that the whiteouts are +visible! +Note that in 'shwh' mode the aufs mount must be 'ro', which will disable +writing to all branches. Also the default mode for all branches is 'ro'. +It is now possible to save the combined contents of the two overlay +branches to a new squashfs, e.g.: +# mksquashfs /livesys/merge_union /path/to/newmods.squash + +This new squashfs archive can be stored on the boot device and the +initramfs will use it to replace the old one at the next boot. diff --git a/Documentation/filesystems/aufs/design/10dynop.txt b/Documentation/filesystems/aufs/design/10dynop.txt new file mode 100644 index 00000000000..710313c08f8 --- /dev/null +++ b/Documentation/filesystems/aufs/design/10dynop.txt @@ -0,0 +1,47 @@ + +# Copyright (C) 2010-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +Dynamically customizable FS operations +---------------------------------------------------------------------- +Generally FS operations (struct inode_operations, struct +address_space_operations, struct file_operations, etc.) are defined as +"static const", but it never means that FS have only one set of +operation. Some FS have multiple sets of them. For instance, ext2 has +three sets, one for XIP, for NOBH, and for normal. +Since aufs overrides and redirects these operations, sometimes aufs has +to change its behaviour according to the branch FS type. More importantly +VFS acts differently if a function (member in the struct) is set or +not. It means aufs should have several sets of operations and select one +among them according to the branch FS definition. + +In order to solve this problem and not to affect the behaviour of VFS, +aufs defines these operations dynamically. For instance, aufs defines +dummy direct_IO function for struct address_space_operations, but it may +not be set to the address_space_operations actually. When the branch FS +doesn't have it, aufs doesn't set it to its address_space_operations +while the function definition itself is still alive. So the behaviour +itself will not change, and it will return an error when direct_IO is +not set. + +The lifetime of these dynamically generated operation object is +maintained by aufs branch object. When the branch is removed from aufs, +the reference counter of the object is decremented. When it reaches +zero, the dynamically generated operation object will be freed. + +This approach is designed to support AIO (io_submit), Direct I/O and +XIP (DAX) mainly. +Currently this approach is applied to address_space_operations for +regular files only. diff --git a/Documentation/scheduler/sched-PDS-mq.txt b/Documentation/scheduler/sched-PDS-mq.txt new file mode 100644 index 00000000000..709e86f6487 --- /dev/null +++ b/Documentation/scheduler/sched-PDS-mq.txt @@ -0,0 +1,56 @@ + Priority and Deadline based Skiplist multiple queue Scheduler + ------------------------------------------------------------- + +CONTENT +======== + + 0. Development + 1. Overview + 1.1 Design goal + 1.2 Design summary + 2. Design Detail + 2.1 Skip list implementation + 2.2 Task preempt + 2.3 Task policy, priority and deadline + 2.4 Task selection + 2.5 Run queue balance + 2.6 Task migration + + +0. Development +============== + +Priority and Deadline based Skiplist multiple queue scheduler, referred to as +PDS from here on, is developed upon the enhancement patchset VRQ(Variable Run +Queue) for BFS(Brain Fuck Scheduler by Con Kolivas). PDS inherits the existing +design from VRQ and inspired by the introduction of skiplist data structure +to the scheduler by Con Kolivas. However, PDS is different from MuQSS(Multiple +Queue Skiplist Scheduler, the successor after BFS) in many ways. + +1. Overview +=========== + +1.1 Design goal +--------------- + +PDS is designed to make the cpu process scheduler code to be simple, but while +efficiency and scalable. Be Simple, the scheduler code will be easy to be read +and the behavious of scheduler will be easy to predict. Be efficiency, the +scheduler shall be well balance the thoughput performance and task interactivity +at the same time for different properties the tasks behave. Be scalable, the +performance of the scheduler should be in good shape with the glowing of +workload or with the growing of the cpu numbers. + +1.2 Design summary +------------------ + +PDS is described as a multiple run queues cpu scheduler. Each cpu has its own +run queue. A heavry customized skiplist is used as the backend data structure +of the cpu run queue. Tasks in run queue is sorted by priority then virtual +deadline(simplfy to just deadline from here on). In PDS, balance action among +run queues are kept as less as possible to reduce the migration cost. Cpumask +data structure is widely used in cpu affinity checking and cpu preemption/ +selection to make PDS scalable with increasing cpu number. + + +To be continued... diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt index eded671d55e..baea9729b16 100644 --- a/Documentation/sysctl/kernel.txt +++ b/Documentation/sysctl/kernel.txt @@ -40,6 +40,7 @@ show up in /proc/sys/kernel: - hung_task_timeout_secs - hung_task_warnings - kexec_load_disabled +- iso_cpu - kptr_restrict - l2cr [ PPC only ] - modprobe ==> Documentation/debugging-modules.txt @@ -74,6 +75,7 @@ show up in /proc/sys/kernel: - randomize_va_space - real-root-dev ==> Documentation/admin-guide/initrd.rst - reboot-cmd [ SPARC only ] +- rr_interval - rtsig-max - rtsig-nr - seccomp/ ==> Documentation/userspace-api/seccomp_filter.rst @@ -95,6 +97,7 @@ show up in /proc/sys/kernel: - unknown_nmi_panic - watchdog - watchdog_thresh +- yield_type - version ============================================================== @@ -411,6 +414,16 @@ When kptr_restrict is set to (2), kernel pointers printed using ============================================================== +iso_cpu: (BFS CPU scheduler only). + +This sets the percentage cpu that the unprivileged SCHED_ISO tasks can +run effectively at realtime priority, averaged over a rolling five +seconds over the -whole- system, meaning all cpus. + +Set to 70 (percent) by default. + +============================================================== + l2cr: (PPC only) This flag controls the L2 cache of G3 processor boards. If @@ -837,6 +850,20 @@ rebooting. ??? ============================================================== +rr_interval: (BFS CPU scheduler only) + +This is the smallest duration that any cpu process scheduling unit +will run for. Increasing this value can increase throughput of cpu +bound tasks substantially but at the expense of increased latencies +overall. Conversely decreasing it will decrease average and maximum +latencies but at the expense of throughput. This value is in +milliseconds and the default value chosen depends on the number of +cpus available at scheduler initialisation with a minimum of 6. + +Valid values are from 1-1000. + +============================================================== + rtsig-max & rtsig-nr: The file rtsig-max can be used to tune the maximum number @@ -1077,3 +1104,13 @@ The softlockup threshold is (2 * watchdog_thresh). Setting this tunable to zero will disable lockup detection altogether. ============================================================== + +yield_type: (MuQSS/VRQ CPU scheduler only) + +This determines what type of yield calls to sched_yield will perform. + + 0 - No yield. + 1 - Yield only to better priority/deadline tasks. (default) + 2 - Expire timeslice and recalculate deadline. + +============================================================== diff --git a/Documentation/tp_smapi.txt b/Documentation/tp_smapi.txt new file mode 100644 index 00000000000..a249678a886 --- /dev/null +++ b/Documentation/tp_smapi.txt @@ -0,0 +1,275 @@ +tp_smapi version 0.42 +IBM ThinkPad hardware functions driver + +Author: Shem Multinymous +Project: http://sourceforge.net/projects/tpctl +Wiki: http://thinkwiki.org/wiki/tp_smapi +List: linux-thinkpad@linux-thinkpad.org + (http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad) + +Description +----------- + +ThinkPad laptops include a proprietary interface called SMAPI BIOS +(System Management Application Program Interface) which provides some +hardware control functionality that is not accessible by other means. + +This driver exposes some features of the SMAPI BIOS through a sysfs +interface. It is suitable for newer models, on which SMAPI is invoked +through IO port writes. Older models use a different SMAPI interface; +for those, try the "thinkpad" module from the "tpctl" package. + +WARNING: +This driver uses undocumented features and direct hardware access. +It thus cannot be guaranteed to work, and may cause arbitrary damage +(especially on models it wasn't tested on). + + +Module parameters +----------------- + +thinkpad_ec module: + force_io=1 lets thinkpad_ec load on some recent ThinkPad models + (e.g., T400 and T500) whose BIOS's ACPI DSDT reserves the ports we need. +tp_smapi module: + debug=1 enables verbose dmesg output. + + +Usage +----- + +Control of battery charging thresholds (in percents of current full charge +capacity): + +# echo 40 > /sys/devices/platform/smapi/BAT0/start_charge_thresh +# echo 70 > /sys/devices/platform/smapi/BAT0/stop_charge_thresh +# cat /sys/devices/platform/smapi/BAT0/*_charge_thresh + + (This is useful since Li-Ion batteries wear out much faster at very + high or low charge levels. The driver will also keeps the thresholds + across suspend-to-disk with AC disconnected; this isn't done + automatically by the hardware.) + +Inhibiting battery charging for 17 minutes (overrides thresholds): + +# echo 17 > /sys/devices/platform/smapi/BAT0/inhibit_charge_minutes +# echo 0 > /sys/devices/platform/smapi/BAT0/inhibit_charge_minutes # stop +# cat /sys/devices/platform/smapi/BAT0/inhibit_charge_minutes + + (This can be used to control which battery is charged when using an + Ultrabay battery.) + +Forcing battery discharging even if AC power available: + +# echo 1 > /sys/devices/platform/smapi/BAT0/force_discharge # start discharge +# echo 0 > /sys/devices/platform/smapi/BAT0/force_discharge # stop discharge +# cat /sys/devices/platform/smapi/BAT0/force_discharge + + (When AC is connected, forced discharging will automatically stop + when battery is fully depleted -- this is useful for calibration. + Also, this attribute can be used to control which battery is discharged + when both a system battery and an Ultrabay battery are connected.) + +Misc read-only battery status attributes (see note about HDAPS below): + +/sys/devices/platform/smapi/BAT0/installed # 0 or 1 +/sys/devices/platform/smapi/BAT0/state # idle/charging/discharging +/sys/devices/platform/smapi/BAT0/cycle_count # integer counter +/sys/devices/platform/smapi/BAT0/current_now # instantaneous current +/sys/devices/platform/smapi/BAT0/current_avg # last minute average +/sys/devices/platform/smapi/BAT0/power_now # instantaneous power +/sys/devices/platform/smapi/BAT0/power_avg # last minute average +/sys/devices/platform/smapi/BAT0/last_full_capacity # in mWh +/sys/devices/platform/smapi/BAT0/remaining_percent # remaining percent of energy (set by calibration) +/sys/devices/platform/smapi/BAT0/remaining_percent_error # error range of remaing_percent (not reset by calibration) +/sys/devices/platform/smapi/BAT0/remaining_running_time # in minutes, by last minute average power +/sys/devices/platform/smapi/BAT0/remaining_running_time_now # in minutes, by instantenous power +/sys/devices/platform/smapi/BAT0/remaining_charging_time # in minutes +/sys/devices/platform/smapi/BAT0/remaining_capacity # in mWh +/sys/devices/platform/smapi/BAT0/design_capacity # in mWh +/sys/devices/platform/smapi/BAT0/voltage # in mV +/sys/devices/platform/smapi/BAT0/design_voltage # in mV +/sys/devices/platform/smapi/BAT0/charging_max_current # max charging current +/sys/devices/platform/smapi/BAT0/charging_max_voltage # max charging voltage +/sys/devices/platform/smapi/BAT0/group{0,1,2,3}_voltage # see below +/sys/devices/platform/smapi/BAT0/manufacturer # string +/sys/devices/platform/smapi/BAT0/model # string +/sys/devices/platform/smapi/BAT0/barcoding # string +/sys/devices/platform/smapi/BAT0/chemistry # string +/sys/devices/platform/smapi/BAT0/serial # integer +/sys/devices/platform/smapi/BAT0/manufacture_date # YYYY-MM-DD +/sys/devices/platform/smapi/BAT0/first_use_date # YYYY-MM-DD +/sys/devices/platform/smapi/BAT0/temperature # in milli-Celsius +/sys/devices/platform/smapi/BAT0/dump # see below +/sys/devices/platform/smapi/ac_connected # 0 or 1 + +The BAT0/group{0,1,2,3}_voltage attribute refers to the separate cell groups +in each battery. For example, on the ThinkPad 600, X3x, T4x and R5x models, +the battery contains 3 cell groups in series, where each group consisting of 2 +or 3 cells connected in parallel. The voltage of each group is given by these +attributes, and their sum (roughly) equals the "voltage" attribute. +(The effective performance of the battery is determined by the weakest group, +i.e., the one those voltage changes most rapidly during dis/charging.) + +The "BAT0/dump" attribute gives a a hex dump of the raw status data, which +contains additional data now in the above (if you can figure it out). Some +unused values are autodetected and replaced by "--": + +In all of the above, replace BAT0 with BAT1 to address the 2nd battery (e.g. +in the UltraBay). + + +Raw SMAPI calls: + +/sys/devices/platform/smapi/smapi_request +This performs raw SMAPI calls. It uses a bad interface that cannot handle +multiple simultaneous access. Don't touch it, it's for development only. +If you did touch it, you would so something like +# echo '211a 100 0 0' > /sys/devices/platform/smapi/smapi_request +# cat /sys/devices/platform/smapi/smapi_request +and notice that in the output "211a 34b b2 0 0 0 'OK'", the "4b" in the 2nd +value, converted to decimal is 75: the current charge stop threshold. + + +Model-specific status +--------------------- + +Works (at least partially) on the following ThinkPad model: +* A30 +* G41 +* R40, R50p, R51, R52 +* T23, T40, T40p, T41, T41p, T42, T42p, T43, T43p, T60, T61, T400, T410, T420 (partially) +* X24, X31, X32, X40, X41, X60, X61, X200, X201, X220 (partially) +* Z60t, Z61m + +Does not work on: +* X230 and newer +* T430 and newer +* Any ThinkPad Edge +* Any ThinkPad Yoga +* Any ThinkPad L series +* Any ThinkPad P series + +Not all functions are available on all models; for detailed status, see: + http://thinkwiki.org/wiki/tp_smapi + +Please report success/failure by e-mail or on the Wiki. +If you get a "not implemented" or "not supported" message, your laptop +probably just can't do that (at least not via the SMAPI BIOS). +For negative reports, follow the bug reporting guidelines below. +If you send me the necessary technical data (i.e., SMAPI function +interfaces), I will support additional models. + + +Additional HDAPS features +------------------------- + +The modified hdaps driver has several improvements on the one in mainline +(beyond resolving the conflict with thinkpad_ec and tp_smapi): + +- Fixes reliability and improves support for recent ThinkPad models + (especially *60 and newer). Unlike the mainline driver, the modified hdaps + correctly follows the Embedded Controller communication protocol. + +- Extends the "invert" parameter to cover all possible axis orientations. + The possible values are as follows. + Let X,Y denote the hardware readouts. + Let R denote the laptop's roll (tilt left/right). + Let P denote the laptop's pitch (tilt forward/backward). + invert=0: R= X P= Y (same as mainline) + invert=1: R=-X P=-Y (same as mainline) + invert=2: R=-X P= Y (new) + invert=3: R= X P=-Y (new) + invert=4: R= Y P= X (new) + invert=5: R=-Y P=-X (new) + invert=6: R=-Y P= X (new) + invert=7: R= Y P=-X (new) + It's probably easiest to just try all 8 possibilities and see which yields + correct results (e.g., in the hdaps-gl visualisation). + +- Adds a whitelist which automatically sets the correct axis orientation for + some models. If the value for your model is wrong or missing, you can override + it using the "invert" parameter. Please also update the tables at + http://www.thinkwiki.org/wiki/tp_smapi and + http://www.thinkwiki.org/wiki/List_of_DMI_IDs + and submit a patch for the whitelist in hdaps.c. + +- Provides new attributes: + /sys/devices/platform/hdaps/sampling_rate: + This determines the frequency at which the host queries the embedded + controller for accelerometer data (and informs the hdaps input devices). + Default=50. + /sys/devices/platform/hdaps/oversampling_ratio: + When set to X, the embedded controller is told to do physical accelerometer + measurements at a rate that is X times higher than the rate at which + the driver reads those measurements (i.e., X*sampling_rate). This + makes the readouts from the embedded controller more fresh, and is also + useful for the running average filter (see next). Default=5 + /sys/devices/platform/hdaps/running_avg_filter_order: + When set to X, reported readouts will be the average of the last X physical + accelerometer measurements. Current firmware allows 1<=X<=8. Setting to a + high value decreases readout fluctuations. The averaging is handled by the + embedded controller, so no CPU resources are used. Higher values make the + readouts smoother, since it averages out both sensor noise (good) and abrupt + changes (bad). Default=2. + +- Provides a second input device, which publishes the raw accelerometer + measurements (without the fuzzing needed for joystick emulation). This input + device can be matched by a udev rule such as the following (all on one line): + KERNEL=="event[0-9]*", ATTRS{phys}=="hdaps/input1", + ATTRS{modalias}=="input:b0019v1014p5054e4801-*", + SYMLINK+="input/hdaps/accelerometer-event + +A new version of the hdapsd userspace daemon, which uses the input device +interface instead of polling sysfs, is available seprately. Using this reduces +the total interrupts per second generated by hdaps+hdapsd (on tickless kernels) +to 50, down from a value that fluctuates between 50 and 100. Set the +sampling_rate sysfs attribute to a lower value to further reduce interrupts, +at the expense of response latency. + +Licensing note: all my changes to the HDAPS driver are licensed under the +GPL version 2 or, at your option and to the extent allowed by derivation from +prior works, any later version. My version of hdaps is derived work from the +mainline version, which at the time of writing is available only under +GPL version 2. + +Bug reporting +------------- + +Mail . Please include: +* Details about your model, +* Relevant "dmesg" output. Make sure thinkpad_ec and tp_smapi are loaded with + the "debug=1" parameter (e.g., use "make load HDAPS=1 DEBUG=1"). +* Output of "dmidecode | grep -C5 Product" +* Does the failed functionality works under Windows? + + +More about SMAPI +---------------- + +For hints about what may be possible via the SMAPI BIOS and how, see: + +* IBM Technical Reference Manual for the ThinkPad 770 + (http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=PFAN-3TUQQD) +* Exported symbols in PWRMGRIF.DLL or TPPWRW32.DLL (e.g., use "objdump -x"). +* drivers/char/mwave/smapi.c in the Linux kernel tree.* +* The "thinkpad" SMAPI module (http://tpctl.sourceforge.net). +* The SMAPI_* constants in tp_smapi.c. + +Note that in the above Technical Reference and in the "thinkpad" module, +SMAPI is invoked through a function call to some physical address. However, +the interface used by tp_smapi and the above mwave drive, and apparently +required by newer ThinkPad, is different: you set the parameters up in the +CPU's registers and write to ports 0xB2 (the APM control port) and 0x4F; this +triggers an SMI (System Management Interrupt), causing the CPU to enter +SMM (System Management Mode) and run the BIOS firmware; the results are +returned in the CPU's registers. It is not clear what is the relation between +the two variants of SMAPI, though the assignment of error codes seems to be +similar. + +In addition, the embedded controller on ThinkPad laptops has a non-standard +interface at IO ports 0x1600-0x161F (mapped to LCP channel 3 of the H8S chip). +The interface provides various system management services (currently known: +battery information and accelerometer readouts). For more information see the +thinkpad_ec module and the H8S hardware documentation: +http://documentation.renesas.com/eng/products/mpumcu/rej09b0300_2140bhm.pdf diff --git a/Documentation/vm/00-INDEX b/Documentation/vm/00-INDEX index f4a4f3e884c..7cd67029f73 100644 --- a/Documentation/vm/00-INDEX +++ b/Documentation/vm/00-INDEX @@ -18,6 +18,8 @@ hwpoison.rst - explains what hwpoison is ksm.rst - how to use the Kernel Samepage Merging feature. +uksm.txt + - Introduction to Ultra KSM mmu_notifier.rst - a note about clearing pte/pmd and mmu notifications numa.rst diff --git a/Documentation/vm/uksm.txt b/Documentation/vm/uksm.txt new file mode 100644 index 00000000000..be19a312700 --- /dev/null +++ b/Documentation/vm/uksm.txt @@ -0,0 +1,61 @@ +The Ultra Kernel Samepage Merging feature +---------------------------------------------- +/* + * Ultra KSM. Copyright (C) 2011-2012 Nai Xia + * + * This is an improvement upon KSM. Some basic data structures and routines + * are borrowed from ksm.c . + * + * Its new features: + * 1. Full system scan: + * It automatically scans all user processes' anonymous VMAs. Kernel-user + * interaction to submit a memory area to KSM is no longer needed. + * + * 2. Rich area detection: + * It automatically detects rich areas containing abundant duplicated + * pages based. Rich areas are given a full scan speed. Poor areas are + * sampled at a reasonable speed with very low CPU consumption. + * + * 3. Ultra Per-page scan speed improvement: + * A new hash algorithm is proposed. As a result, on a machine with + * Core(TM)2 Quad Q9300 CPU in 32-bit mode and 800MHZ DDR2 main memory, it + * can scan memory areas that does not contain duplicated pages at speed of + * 627MB/sec ~ 2445MB/sec and can merge duplicated areas at speed of + * 477MB/sec ~ 923MB/sec. + * + * 4. Thrashing area avoidance: + * Thrashing area(an VMA that has frequent Ksm page break-out) can be + * filtered out. My benchmark shows it's more efficient than KSM's per-page + * hash value based volatile page detection. + * + * + * 5. Misc changes upon KSM: + * * It has a fully x86-opitmized memcmp dedicated for 4-byte-aligned page + * comparison. It's much faster than default C version on x86. + * * rmap_item now has an struct *page member to loosely cache a + * address-->page mapping, which reduces too much time-costly + * follow_page(). + * * The VMA creation/exit procedures are hooked to let the Ultra KSM know. + * * try_to_merge_two_pages() now can revert a pte if it fails. No break_ + * ksm is needed for this case. + * + * 6. Full Zero Page consideration(contributed by Figo Zhang) + * Now uksmd consider full zero pages as special pages and merge them to an + * special unswappable uksm zero page. + */ + +ChangeLog: + +2012-05-05 The creation of this Doc +2012-05-08 UKSM 0.1.1.1 libc crash bug fix, api clean up, doc clean up. +2012-05-28 UKSM 0.1.1.2 bug fix release +2012-06-26 UKSM 0.1.2-beta1 first beta release for 0.1.2 +2012-07-2 UKSM 0.1.2-beta2 +2012-07-10 UKSM 0.1.2-beta3 +2012-07-26 UKSM 0.1.2 Fine grained speed control, more scan optimization. +2012-10-13 UKSM 0.1.2.1 Bug fixes. +2012-12-31 UKSM 0.1.2.2 Minor bug fixes. +2014-07-02 UKSM 0.1.2.3 Fix a " __this_cpu_read() in preemptible bug". +2015-04-22 UKSM 0.1.2.4 Fix a race condition that can sometimes trigger anonying warnings. +2016-09-10 UKSM 0.1.2.5 Fix a bug in dedup ratio calculation. +2017-02-26 UKSM 0.1.2.6 Fix a bug in hugetlbpage handling and a race bug with page migration. diff --git a/MAINTAINERS b/MAINTAINERS index 544cac829cf..aaa1c7aeae4 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2541,6 +2541,19 @@ F: include/linux/audit.h F: include/uapi/linux/audit.h F: kernel/audit* +AUFS (advanced multi layered unification filesystem) FILESYSTEM +M: "J. R. Okajima" +L: linux-unionfs@vger.kernel.org +L: aufs-users@lists.sourceforge.net (members only) +W: http://aufs.sourceforge.net +T: git://github.com/sfjro/aufs4-linux.git +S: Supported +F: Documentation/filesystems/aufs/ +F: Documentation/ABI/testing/debugfs-aufs +F: Documentation/ABI/testing/sysfs-aufs +F: fs/aufs/ +F: include/uapi/linux/aufs_type.h + AUXILIARY DISPLAY DRIVERS M: Miguel Ojeda Sandonis S: Maintained diff --git a/Makefile b/Makefile index fafb8295030..186239a57f6 100644 --- a/Makefile +++ b/Makefile @@ -2,8 +2,8 @@ VERSION = 4 PATCHLEVEL = 18 SUBLEVEL = 5 -EXTRAVERSION = -gnu -NAME = Merciless Moray +EXTRAVERSION = -gnu-pck2 +NAME = Short and Stout # *DOCUMENTATION* # To see a list of typical targets execute "make help" @@ -651,12 +651,16 @@ ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE KBUILD_CFLAGS += $(call cc-option,-Oz,-Os) KBUILD_CFLAGS += $(call cc-disable-warning,maybe-uninitialized,) else +ifdef CONFIG_CC_OPTIMIZE_HARDER +KBUILD_CFLAGS += -O3 $(call cc-disable-warning,maybe-uninitialized,) +else ifdef CONFIG_PROFILE_ALL_BRANCHES KBUILD_CFLAGS += -O2 $(call cc-disable-warning,maybe-uninitialized,) else KBUILD_CFLAGS += -O2 endif endif +endif KBUILD_CFLAGS += $(call cc-ifversion, -lt, 0409, \ $(call cc-disable-warning,maybe-uninitialized,)) diff --git a/arch/powerpc/platforms/cell/spufs/sched.c b/arch/powerpc/platforms/cell/spufs/sched.c index c9ef3c53216..1298454c049 100644 --- a/arch/powerpc/platforms/cell/spufs/sched.c +++ b/arch/powerpc/platforms/cell/spufs/sched.c @@ -64,11 +64,6 @@ static struct task_struct *spusched_task; static struct timer_list spusched_timer; static struct timer_list spuloadavg_timer; -/* - * Priority of a normal, non-rt, non-niced'd process (aka nice level 0). - */ -#define NORMAL_PRIO 120 - /* * Frequency of the spu scheduler tick. By default we do one SPU scheduler * tick for every 10 CPU scheduler ticks. diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 6b8065d718b..89fcda06234 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1014,6 +1014,22 @@ config SCHED_SMT cost of slightly increased overhead in some places. If unsure say N here. +config SMT_NICE + bool "SMT (Hyperthreading) aware nice priority and policy support" + depends on SCHED_PDS && SCHED_SMT + default y + ---help--- + Enabling Hyperthreading on Intel CPUs decreases the effectiveness + of the use of 'nice' levels and different scheduling policies + (e.g. realtime) due to sharing of CPU power between hyperthreads. + SMT nice support makes each logical CPU aware of what is running on + its hyperthread siblings, maintaining appropriate distribution of + CPU according to nice levels and scheduling policies at the expense + of slightly increased overhead. + + If unsure say Y here. + + config SCHED_MC def_bool y prompt "Multi-core scheduler support" diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu index 638411f2226..c8cd839f930 100644 --- a/arch/x86/Kconfig.cpu +++ b/arch/x86/Kconfig.cpu @@ -116,6 +116,7 @@ config MPENTIUMM config MPENTIUM4 bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/older Xeon" depends on X86_32 + select X86_P6_NOP ---help--- Select this for Intel Pentium 4 chips. This includes the Pentium 4, Pentium D, P4-based Celeron and Xeon, and @@ -148,9 +149,8 @@ config MPENTIUM4 -Paxville -Dempsey - config MK6 - bool "K6/K6-II/K6-III" + bool "AMD K6/K6-II/K6-III" depends on X86_32 ---help--- Select this for an AMD K6-family processor. Enables use of @@ -158,7 +158,7 @@ config MK6 flags to GCC. config MK7 - bool "Athlon/Duron/K7" + bool "AMD Athlon/Duron/K7" depends on X86_32 ---help--- Select this for an AMD Athlon K7-family processor. Enables use of @@ -166,12 +166,83 @@ config MK7 flags to GCC. config MK8 - bool "Opteron/Athlon64/Hammer/K8" + bool "AMD Opteron/Athlon64/Hammer/K8" ---help--- Select this for an AMD Opteron or Athlon64 Hammer-family processor. Enables use of some extended instructions, and passes appropriate optimization flags to GCC. +config MK8SSE3 + bool "AMD Opteron/Athlon64/Hammer/K8 with SSE3" + ---help--- + Select this for improved AMD Opteron or Athlon64 Hammer-family processors. + Enables use of some extended instructions, and passes appropriate + optimization flags to GCC. + +config MK10 + bool "AMD 61xx/7x50/PhenomX3/X4/II/K10" + ---help--- + Select this for an AMD 61xx Eight-Core Magny-Cours, Athlon X2 7x50, + Phenom X3/X4/II, Athlon II X2/X3/X4, or Turion II-family processor. + Enables use of some extended instructions, and passes appropriate + optimization flags to GCC. + +config MBARCELONA + bool "AMD Barcelona" + ---help--- + Select this for AMD Family 10h Barcelona processors. + + Enables -march=barcelona + +config MBOBCAT + bool "AMD Bobcat" + ---help--- + Select this for AMD Family 14h Bobcat processors. + + Enables -march=btver1 + +config MJAGUAR + bool "AMD Jaguar" + ---help--- + Select this for AMD Family 16h Jaguar processors. + + Enables -march=btver2 + +config MBULLDOZER + bool "AMD Bulldozer" + ---help--- + Select this for AMD Family 15h Bulldozer processors. + + Enables -march=bdver1 + +config MPILEDRIVER + bool "AMD Piledriver" + ---help--- + Select this for AMD Family 15h Piledriver processors. + + Enables -march=bdver2 + +config MSTEAMROLLER + bool "AMD Steamroller" + ---help--- + Select this for AMD Family 15h Steamroller processors. + + Enables -march=bdver3 + +config MEXCAVATOR + bool "AMD Excavator" + ---help--- + Select this for AMD Family 15h Excavator processors. + + Enables -march=bdver4 + +config MPCK + bool "AMD Zen" + ---help--- + Select this for AMD Family 17h Zen processors. + + Enables -march=znver1 + config MCRUSOE bool "Crusoe" depends on X86_32 @@ -253,6 +324,7 @@ config MVIAC7 config MPSC bool "Intel P4 / older Netburst based Xeon" + select X86_P6_NOP depends on X86_64 ---help--- Optimize for Intel Pentium 4, Pentium D and older Nocona/Dempsey @@ -262,8 +334,19 @@ config MPSC using the cpu family field in /proc/cpuinfo. Family 15 is an older Xeon, Family 6 a newer one. +config MATOM + bool "Intel Atom" + select X86_P6_NOP + ---help--- + + Select this for the Intel Atom platform. Intel Atom CPUs have an + in-order pipelining architecture and thus can benefit from + accordingly optimized code. Use a recent GCC with specific Atom + support in order to fully benefit from selecting this option. + config MCORE2 - bool "Core 2/newer Xeon" + bool "Intel Core 2" + select X86_P6_NOP ---help--- Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and @@ -271,14 +354,106 @@ config MCORE2 family in /proc/cpuinfo. Newer ones have 6 and older ones 15 (not a typo) -config MATOM - bool "Intel Atom" + Enables -march=core2 + +config MNEHALEM + bool "Intel Nehalem" + select X86_P6_NOP ---help--- - Select this for the Intel Atom platform. Intel Atom CPUs have an - in-order pipelining architecture and thus can benefit from - accordingly optimized code. Use a recent GCC with specific Atom - support in order to fully benefit from selecting this option. + Select this for 1st Gen Core processors in the Nehalem family. + + Enables -march=nehalem + +config MWESTMERE + bool "Intel Westmere" + select X86_P6_NOP + ---help--- + + Select this for the Intel Westmere formerly Nehalem-C family. + + Enables -march=westmere + +config MSILVERMONT + bool "Intel Silvermont" + select X86_P6_NOP + ---help--- + + Select this for the Intel Silvermont platform. + + Enables -march=silvermont + +config MSANDYBRIDGE + bool "Intel Sandy Bridge" + select X86_P6_NOP + ---help--- + + Select this for 2nd Gen Core processors in the Sandy Bridge family. + + Enables -march=sandybridge + +config MIVYBRIDGE + bool "Intel Ivy Bridge" + select X86_P6_NOP + ---help--- + + Select this for 3rd Gen Core processors in the Ivy Bridge family. + + Enables -march=ivybridge + +config MHASWELL + bool "Intel Haswell" + select X86_P6_NOP + ---help--- + + Select this for 4th Gen Core processors in the Haswell family. + + Enables -march=haswell + +config MBROADWELL + bool "Intel Broadwell" + select X86_P6_NOP + ---help--- + + Select this for 5th Gen Core processors in the Broadwell family. + + Enables -march=broadwell + +config MSKYLAKE + bool "Intel Skylake" + select X86_P6_NOP + ---help--- + + Select this for 6th Gen Core processors in the Skylake family. + + Enables -march=skylake + +config MSKYLAKEX + bool "Intel Skylake X" + select X86_P6_NOP + ---help--- + + Select this for 6th Gen Core processors in the Skylake X family. + + Enables -march=skylake-avx512 + +config MCANNONLAKE + bool "Intel Cannon Lake" + select X86_P6_NOP + ---help--- + + Select this for 8th Gen Core processors + + Enables -march=cannonlake + +config MICELAKE + bool "Intel Ice Lake" + select X86_P6_NOP + ---help--- + + Select this for 8th Gen Core processors in the Ice Lake family. + + Enables -march=icelake config GENERIC_CPU bool "Generic-x86-64" @@ -287,6 +462,19 @@ config GENERIC_CPU Generic x86-64 CPU. Run equally well on all x86-64 CPUs. +config MNATIVE + bool "Native optimizations autodetected by GCC" + ---help--- + + GCC 4.2 and above support -march=native, which automatically detects + the optimum settings to use based on your processor. -march=native + also detects and applies additional settings beyond -march specific + to your CPU, (eg. -msse4). Unless you have a specific reason not to + (e.g. distcc cross-compiling), you should probably be using + -march=native rather than anything listed below. + + Enables -march=native + endchoice config X86_GENERIC @@ -311,7 +499,7 @@ config X86_INTERNODE_CACHE_SHIFT config X86_L1_CACHE_SHIFT int default "7" if MPENTIUM4 || MPSC - default "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU + default "6" if MK7 || MK8 || MK8SSE3 || MK10 || MBARCELONA || MBOBCAT || MBULLDOZER || MPILEDRIVER || MSTEAMROLLER || MEXCAVATOR || MPCK || MJAGUAR || MPENTIUMM || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MSKYLAKEX || MCANNONLAKE || MICELAKE || MNATIVE || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU default "4" if MELAN || M486 || MGEODEGX1 default "5" if MWINCHIP3D || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX @@ -329,35 +517,36 @@ config X86_ALIGNMENT_16 config X86_INTEL_USERCOPY def_bool y - depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON || MCORE2 + depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK8SSE3 || MK7 || MEFFICEON || MCORE2 || MK10 || MBARCELONA || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MSKYLAKEX || MCANNONLAKE || MICELAKE || MNATIVE config X86_USE_PPRO_CHECKSUM def_bool y - depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MVIAC7 || MEFFICEON || MGEODE_LX || MCORE2 || MATOM + depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MK10 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MK8SSE3 || MVIAC3_2 || MVIAC7 || MEFFICEON || MGEODE_LX || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MSKYLAKEX || MCANNONLAKE || MICELAKE || MATOM || MNATIVE config X86_USE_3DNOW def_bool y depends on (MCYRIXIII || MK7 || MGEODE_LX) && !UML -# -# P6_NOPs are a relatively minor optimization that require a family >= -# 6 processor, except that it is broken on certain VIA chips. -# Furthermore, AMD chips prefer a totally different sequence of NOPs -# (which work on all CPUs). In addition, it looks like Virtual PC -# does not understand them. -# -# As a result, disallow these if we're not compiling for X86_64 (these -# NOPs do work on all x86-64 capable chips); the list of processors in -# the right-hand clause are the cores that benefit from this optimization. -# config X86_P6_NOP - def_bool y - depends on X86_64 - depends on (MCORE2 || MPENTIUM4 || MPSC) + default n + bool "Support for P6_NOPs on Intel chips" + depends on (MCORE2 || MPENTIUM4 || MPSC || MATOM || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MSKYLAKEX || MCANNONLAKE || MICELAKE || MNATIVE) + ---help--- + P6_NOPs are a relatively minor optimization that require a family >= + 6 processor, except that it is broken on certain VIA chips. + Furthermore, AMD chips prefer a totally different sequence of NOPs + (which work on all CPUs). In addition, it looks like Virtual PC + does not understand them. + + As a result, disallow these if we're not compiling for X86_64 (these + NOPs do work on all x86-64 capable chips); the list of processors in + the right-hand clause are the cores that benefit from this optimization. + + Say Y if you have Intel CPU newer than Pentium Pro, N otherwise. config X86_TSC def_bool y - depends on (MWINCHIP3D || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2 || MATOM) || X86_64 + depends on (MWINCHIP3D || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MK8SSE3 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MSKYLAKEX || MCANNONLAKE || MICELAKE || MNATIVE || MATOM) || X86_64 config X86_CMPXCHG64 def_bool y @@ -367,7 +556,7 @@ config X86_CMPXCHG64 # generates cmov. config X86_CMOV def_bool y - depends on (MK8 || MK7 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX) + depends on (MK8 || MK8SSE3 || MK10 || MBARCELONA || MBOBCAT || MBULLDOZER || MPILEDRIVER || MSTEAMROLLER || MEXCAVATOR || MPCK || MJAGUAR || MK7 || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MSKYLAKEX || MCANNONLAKE || MICELAKE || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MNATIVE || MATOM || MGEODE_LX) config X86_MINIMUM_CPU_FAMILY int diff --git a/arch/x86/Makefile b/arch/x86/Makefile index a08e8285656..e4eca742934 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -123,13 +123,46 @@ else KBUILD_CFLAGS += $(call cc-option,-mskip-rax-setup) # FIXME - should be integrated in Makefile.cpu (Makefile_32.cpu) + cflags-$(CONFIG_MNATIVE) += $(call cc-option,-march=native) cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8) + cflags-$(CONFIG_MK8SSE3) += $(call cc-option,-march=k8-sse3,-mtune=k8) + cflags-$(CONFIG_MK10) += $(call cc-option,-march=amdfam10) + cflags-$(CONFIG_MBARCELONA) += $(call cc-option,-march=barcelona) + cflags-$(CONFIG_MBOBCAT) += $(call cc-option,-march=btver1) + cflags-$(CONFIG_MJAGUAR) += $(call cc-option,-march=btver2) + cflags-$(CONFIG_MBULLDOZER) += $(call cc-option,-march=bdver1) + cflags-$(CONFIG_MPILEDRIVER) += $(call cc-option,-march=bdver2) + cflags-$(CONFIG_MSTEAMROLLER) += $(call cc-option,-march=bdver3) + cflags-$(CONFIG_MEXCAVATOR) += $(call cc-option,-march=bdver4) + cflags-$(CONFIG_MPCK) += $(call cc-option,-march=znver1) cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona) cflags-$(CONFIG_MCORE2) += \ - $(call cc-option,-march=core2,$(call cc-option,-mtune=generic)) - cflags-$(CONFIG_MATOM) += $(call cc-option,-march=atom) \ - $(call cc-option,-mtune=atom,$(call cc-option,-mtune=generic)) + $(call cc-option,-march=core2,$(call cc-option,-mtune=core2)) + cflags-$(CONFIG_MNEHALEM) += \ + $(call cc-option,-march=nehalem,$(call cc-option,-mtune=nehalem)) + cflags-$(CONFIG_MWESTMERE) += \ + $(call cc-option,-march=westmere,$(call cc-option,-mtune=westmere)) + cflags-$(CONFIG_MSILVERMONT) += \ + $(call cc-option,-march=silvermont,$(call cc-option,-mtune=silvermont)) + cflags-$(CONFIG_MSANDYBRIDGE) += \ + $(call cc-option,-march=sandybridge,$(call cc-option,-mtune=sandybridge)) + cflags-$(CONFIG_MIVYBRIDGE) += \ + $(call cc-option,-march=ivybridge,$(call cc-option,-mtune=ivybridge)) + cflags-$(CONFIG_MHASWELL) += \ + $(call cc-option,-march=haswell,$(call cc-option,-mtune=haswell)) + cflags-$(CONFIG_MBROADWELL) += \ + $(call cc-option,-march=broadwell,$(call cc-option,-mtune=broadwell)) + cflags-$(CONFIG_MSKYLAKE) += \ + $(call cc-option,-march=skylake,$(call cc-option,-mtune=skylake)) + cflags-$(CONFIG_MSKYLAKEX) += \ + $(call cc-option,-march=skylake-avx512,$(call cc-option,-mtune=skylake-avx512)) + cflags-$(CONFIG_MCANNONLAKE) += \ + $(call cc-option,-march=cannonlake,$(call cc-option,-mtune=cannonlake)) + cflags-$(CONFIG_MICELAKE) += \ + $(call cc-option,-march=icelake,$(call cc-option,-mtune=icelake)) + cflags-$(CONFIG_MATOM) += $(call cc-option,-march=bonnell) \ + $(call cc-option,-mtune=bonnell,$(call cc-option,-mtune=generic)) cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic) KBUILD_CFLAGS += $(cflags-y) diff --git a/arch/x86/Makefile_32.cpu b/arch/x86/Makefile_32.cpu index 1f5faf8606b..d9d3b2fad2c 100644 --- a/arch/x86/Makefile_32.cpu +++ b/arch/x86/Makefile_32.cpu @@ -23,7 +23,18 @@ cflags-$(CONFIG_MK6) += -march=k6 # Please note, that patches that add -march=athlon-xp and friends are pointless. # They make zero difference whatsosever to performance at this time. cflags-$(CONFIG_MK7) += -march=athlon +cflags-$(CONFIG_MNATIVE) += $(call cc-option,-march=native) cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8,-march=athlon) +cflags-$(CONFIG_MK8SSE3) += $(call cc-option,-march=k8-sse3,-march=athlon) +cflags-$(CONFIG_MK10) += $(call cc-option,-march=amdfam10,-march=athlon) +cflags-$(CONFIG_MBARCELONA) += $(call cc-option,-march=barcelona,-march=athlon) +cflags-$(CONFIG_MBOBCAT) += $(call cc-option,-march=btver1,-march=athlon) +cflags-$(CONFIG_MJAGUAR) += $(call cc-option,-march=btver2,-march=athlon) +cflags-$(CONFIG_MBULLDOZER) += $(call cc-option,-march=bdver1,-march=athlon) +cflags-$(CONFIG_MPILEDRIVER) += $(call cc-option,-march=bdver2,-march=athlon) +cflags-$(CONFIG_MSTEAMROLLER) += $(call cc-option,-march=bdver3,-march=athlon) +cflags-$(CONFIG_MEXCAVATOR) += $(call cc-option,-march=bdver4,-march=athlon) +cflags-$(CONFIG_MPCK) += $(call cc-option,-march=znver1,-march=athlon) cflags-$(CONFIG_MCRUSOE) += -march=i686 -falign-functions=0 -falign-jumps=0 -falign-loops=0 cflags-$(CONFIG_MEFFICEON) += -march=i686 $(call tune,pentium3) -falign-functions=0 -falign-jumps=0 -falign-loops=0 cflags-$(CONFIG_MWINCHIPC6) += $(call cc-option,-march=winchip-c6,-march=i586) @@ -32,8 +43,19 @@ cflags-$(CONFIG_MCYRIXIII) += $(call cc-option,-march=c3,-march=i486) -falign-fu cflags-$(CONFIG_MVIAC3_2) += $(call cc-option,-march=c3-2,-march=i686) cflags-$(CONFIG_MVIAC7) += -march=i686 cflags-$(CONFIG_MCORE2) += -march=i686 $(call tune,core2) -cflags-$(CONFIG_MATOM) += $(call cc-option,-march=atom,$(call cc-option,-march=core2,-march=i686)) \ - $(call cc-option,-mtune=atom,$(call cc-option,-mtune=generic)) +cflags-$(CONFIG_MNEHALEM) += -march=i686 $(call tune,nehalem) +cflags-$(CONFIG_MWESTMERE) += -march=i686 $(call tune,westmere) +cflags-$(CONFIG_MSILVERMONT) += -march=i686 $(call tune,silvermont) +cflags-$(CONFIG_MSANDYBRIDGE) += -march=i686 $(call tune,sandybridge) +cflags-$(CONFIG_MIVYBRIDGE) += -march=i686 $(call tune,ivybridge) +cflags-$(CONFIG_MHASWELL) += -march=i686 $(call tune,haswell) +cflags-$(CONFIG_MBROADWELL) += -march=i686 $(call tune,broadwell) +cflags-$(CONFIG_MSKYLAKE) += -march=i686 $(call tune,skylake) +cflags-$(CONFIG_MSKYLAKEX) += -march=i686 $(call tune,skylake-avx512) +cflags-$(CONFIG_MCANNONLAKE) += -march=i686 $(call tune,cannonlake) +cflags-$(CONFIG_MICELAKE) += -march=i686 $(call tune,icelake) +cflags-$(CONFIG_MATOM) += $(call cc-option,-march=bonnell,$(call cc-option,-march=core2,-march=i686)) \ + $(call cc-option,-mtune=bonnell,$(call cc-option,-mtune=generic)) # AMD Elan support cflags-$(CONFIG_MELAN) += -march=i486 diff --git a/arch/x86/include/asm/module.h b/arch/x86/include/asm/module.h index 7948a17febb..2d7657ef0ba 100644 --- a/arch/x86/include/asm/module.h +++ b/arch/x86/include/asm/module.h @@ -25,6 +25,30 @@ struct mod_arch_specific { #define MODULE_PROC_FAMILY "586MMX " #elif defined CONFIG_MCORE2 #define MODULE_PROC_FAMILY "CORE2 " +#elif defined CONFIG_MNATIVE +#define MODULE_PROC_FAMILY "NATIVE " +#elif defined CONFIG_MNEHALEM +#define MODULE_PROC_FAMILY "NEHALEM " +#elif defined CONFIG_MWESTMERE +#define MODULE_PROC_FAMILY "WESTMERE " +#elif defined CONFIG_MSILVERMONT +#define MODULE_PROC_FAMILY "SILVERMONT " +#elif defined CONFIG_MSANDYBRIDGE +#define MODULE_PROC_FAMILY "SANDYBRIDGE " +#elif defined CONFIG_MIVYBRIDGE +#define MODULE_PROC_FAMILY "IVYBRIDGE " +#elif defined CONFIG_MHASWELL +#define MODULE_PROC_FAMILY "HASWELL " +#elif defined CONFIG_MBROADWELL +#define MODULE_PROC_FAMILY "BROADWELL " +#elif defined CONFIG_MSKYLAKE +#define MODULE_PROC_FAMILY "SKYLAKE " +#elif defined CONFIG_MSKYLAKEX +#define MODULE_PROC_FAMILY "SKYLAKEX " +#elif defined CONFIG_MCANNONLAKE +#define MODULE_PROC_FAMILY "CANNONLAKE " +#elif defined CONFIG_MICELAKE +#define MODULE_PROC_FAMILY "ICELAKE " #elif defined CONFIG_MATOM #define MODULE_PROC_FAMILY "ATOM " #elif defined CONFIG_M686 @@ -43,6 +67,26 @@ struct mod_arch_specific { #define MODULE_PROC_FAMILY "K7 " #elif defined CONFIG_MK8 #define MODULE_PROC_FAMILY "K8 " +#elif defined CONFIG_MK8SSE3 +#define MODULE_PROC_FAMILY "K8SSE3 " +#elif defined CONFIG_MK10 +#define MODULE_PROC_FAMILY "K10 " +#elif defined CONFIG_MBARCELONA +#define MODULE_PROC_FAMILY "BARCELONA " +#elif defined CONFIG_MBOBCAT +#define MODULE_PROC_FAMILY "BOBCAT " +#elif defined CONFIG_MBULLDOZER +#define MODULE_PROC_FAMILY "BULLDOZER " +#elif defined CONFIG_MPILEDRIVER +#define MODULE_PROC_FAMILY "PILEDRIVER " +#elif defined CONFIG_MSTEAMROLLER +#define MODULE_PROC_FAMILY "STEAMROLLER " +#elif defined CONFIG_MJAGUAR +#define MODULE_PROC_FAMILY "JAGUAR " +#elif defined CONFIG_MEXCAVATOR +#define MODULE_PROC_FAMILY "EXCAVATOR " +#elif defined CONFIG_MPCK +#define MODULE_PROC_FAMILY "PCK " #elif defined CONFIG_MELAN #define MODULE_PROC_FAMILY "ELAN " #elif defined CONFIG_MCRUSOE diff --git a/block/Kconfig.iosched b/block/Kconfig.iosched index a4a8914bf7a..299a6861fb9 100644 --- a/block/Kconfig.iosched +++ b/block/Kconfig.iosched @@ -40,6 +40,26 @@ config CFQ_GROUP_IOSCHED ---help--- Enable group IO scheduling in CFQ. +config IOSCHED_BFQ_SQ + tristate "BFQ-SQ I/O scheduler" + default n + ---help--- + The BFQ-SQ I/O scheduler (for legacy blk: SQ stands for + SingleQueue) distributes bandwidth among all processes + according to their weights, regardless of the device + parameters and with any workload. It also guarantees a low + latency to interactive and soft real-time applications. + Details in Documentation/block/bfq-iosched.txt + +config BFQ_SQ_GROUP_IOSCHED + bool "BFQ-SQ hierarchical scheduling support" + depends on IOSCHED_BFQ_SQ && BLK_CGROUP + default n + ---help--- + + Enable hierarchical scheduling in BFQ-SQ, using the blkio + (cgroups-v1) or io (cgroups-v2) controller. + choice prompt "Default I/O scheduler" @@ -54,6 +74,16 @@ choice config DEFAULT_CFQ bool "CFQ" if IOSCHED_CFQ=y + config DEFAULT_BFQ_SQ + bool "BFQ-SQ" if IOSCHED_BFQ_SQ=y + help + Selects BFQ-SQ as the default I/O scheduler which will be + used by default for all block devices. + The BFQ-SQ I/O scheduler aims at distributing the bandwidth + as desired, independently of the disk parameters and with + any workload. It also tries to guarantee low latency to + interactive and soft real-time applications. + config DEFAULT_NOOP bool "No-op" @@ -63,8 +93,28 @@ config DEFAULT_IOSCHED string default "deadline" if DEFAULT_DEADLINE default "cfq" if DEFAULT_CFQ + default "bfq-sq" if DEFAULT_BFQ_SQ default "noop" if DEFAULT_NOOP +config MQ_IOSCHED_BFQ + tristate "BFQ-MQ I/O Scheduler" + default y + ---help--- + BFQ I/O scheduler for BLK-MQ. BFQ-MQ distributes bandwidth + among all processes according to their weights, regardless of + the device parameters and with any workload. It also + guarantees a low latency to interactive and soft real-time + applications. Details in Documentation/block/bfq-iosched.txt + +config MQ_BFQ_GROUP_IOSCHED + bool "BFQ-MQ hierarchical scheduling support" + depends on MQ_IOSCHED_BFQ && BLK_CGROUP + default n + ---help--- + + Enable hierarchical scheduling in BFQ-MQ, using the blkio + (cgroups-v1) or io (cgroups-v2) controller. + config MQ_IOSCHED_DEADLINE tristate "MQ deadline I/O scheduler" default y diff --git a/block/Makefile b/block/Makefile index 6a56303b992..a571329c23f 100644 --- a/block/Makefile +++ b/block/Makefile @@ -24,6 +24,8 @@ obj-$(CONFIG_MQ_IOSCHED_DEADLINE) += mq-deadline.o obj-$(CONFIG_MQ_IOSCHED_KYBER) += kyber-iosched.o bfq-y := bfq-iosched.o bfq-wf2q.o bfq-cgroup.o obj-$(CONFIG_IOSCHED_BFQ) += bfq.o +obj-$(CONFIG_IOSCHED_BFQ_SQ) += bfq-sq-iosched.o +obj-$(CONFIG_MQ_IOSCHED_BFQ) += bfq-mq-iosched.o obj-$(CONFIG_BLOCK_COMPAT) += compat_ioctl.o obj-$(CONFIG_BLK_CMDLINE_PARSER) += cmdline-parser.o diff --git a/block/bfq-cgroup-included.c b/block/bfq-cgroup-included.c new file mode 100644 index 00000000000..613f154e9da --- /dev/null +++ b/block/bfq-cgroup-included.c @@ -0,0 +1,1354 @@ +/* + * BFQ: CGROUPS support. + * + * Based on ideas and code from CFQ: + * Copyright (C) 2003 Jens Axboe + * + * Copyright (C) 2008 Fabio Checconi + * Paolo Valente + * + * Copyright (C) 2015 Paolo Valente + * + * Copyright (C) 2016 Paolo Valente + * + * Licensed under the GPL-2 as detailed in the accompanying COPYING.BFQ + * file. + */ + +#if defined(BFQ_GROUP_IOSCHED_ENABLED) && defined(CONFIG_DEBUG_BLK_CGROUP) + +/* bfqg stats flags */ +enum bfqg_stats_flags { + BFQG_stats_waiting = 0, + BFQG_stats_idling, + BFQG_stats_empty, +}; + +#define BFQG_FLAG_FNS(name) \ +static void bfqg_stats_mark_##name(struct bfqg_stats *stats) \ +{ \ + stats->flags |= (1 << BFQG_stats_##name); \ +} \ +static void bfqg_stats_clear_##name(struct bfqg_stats *stats) \ +{ \ + stats->flags &= ~(1 << BFQG_stats_##name); \ +} \ +static int bfqg_stats_##name(struct bfqg_stats *stats) \ +{ \ + return (stats->flags & (1 << BFQG_stats_##name)) != 0; \ +} \ + +BFQG_FLAG_FNS(waiting) +BFQG_FLAG_FNS(idling) +BFQG_FLAG_FNS(empty) +#undef BFQG_FLAG_FNS + +#ifdef BFQ_MQ +/* This should be called with the scheduler lock held. */ +#else +/* This should be called with the queue_lock held. */ +#endif +static void bfqg_stats_update_group_wait_time(struct bfqg_stats *stats) +{ + unsigned long long now; + + if (!bfqg_stats_waiting(stats)) + return; + + now = sched_clock(); + if (time_after64(now, stats->start_group_wait_time)) + blkg_stat_add(&stats->group_wait_time, + now - stats->start_group_wait_time); + bfqg_stats_clear_waiting(stats); +} + +#ifdef BFQ_MQ +/* This should be called with the scheduler lock held. */ +#else +/* This should be called with the queue_lock held. */ +#endif +static void bfqg_stats_set_start_group_wait_time(struct bfq_group *bfqg, + struct bfq_group *curr_bfqg) +{ + struct bfqg_stats *stats = &bfqg->stats; + + if (bfqg_stats_waiting(stats)) + return; + if (bfqg == curr_bfqg) + return; + stats->start_group_wait_time = sched_clock(); + bfqg_stats_mark_waiting(stats); +} + +#ifdef BFQ_MQ +/* This should be called with the scheduler lock held. */ +#else +/* This should be called with the queue_lock held. */ +#endif +static void bfqg_stats_end_empty_time(struct bfqg_stats *stats) +{ + unsigned long long now; + + if (!bfqg_stats_empty(stats)) + return; + + now = sched_clock(); + if (time_after64(now, stats->start_empty_time)) + blkg_stat_add(&stats->empty_time, + now - stats->start_empty_time); + bfqg_stats_clear_empty(stats); +} + +static void bfqg_stats_update_dequeue(struct bfq_group *bfqg) +{ + blkg_stat_add(&bfqg->stats.dequeue, 1); +} + +static void bfqg_stats_set_start_empty_time(struct bfq_group *bfqg) +{ + struct bfqg_stats *stats = &bfqg->stats; + + if (blkg_rwstat_total(&stats->queued)) + return; + + /* + * group is already marked empty. This can happen if bfqq got new + * request in parent group and moved to this group while being added + * to service tree. Just ignore the event and move on. + */ + if (bfqg_stats_empty(stats)) + return; + + stats->start_empty_time = sched_clock(); + bfqg_stats_mark_empty(stats); +} + +static void bfqg_stats_update_idle_time(struct bfq_group *bfqg) +{ + struct bfqg_stats *stats = &bfqg->stats; + + if (bfqg_stats_idling(stats)) { + unsigned long long now = sched_clock(); + + if (time_after64(now, stats->start_idle_time)) + blkg_stat_add(&stats->idle_time, + now - stats->start_idle_time); + bfqg_stats_clear_idling(stats); + } +} + +static void bfqg_stats_set_start_idle_time(struct bfq_group *bfqg) +{ + struct bfqg_stats *stats = &bfqg->stats; + + stats->start_idle_time = sched_clock(); + bfqg_stats_mark_idling(stats); +} + +static void bfqg_stats_update_avg_queue_size(struct bfq_group *bfqg) +{ + struct bfqg_stats *stats = &bfqg->stats; + + blkg_stat_add(&stats->avg_queue_size_sum, + blkg_rwstat_total(&stats->queued)); + blkg_stat_add(&stats->avg_queue_size_samples, 1); + bfqg_stats_update_group_wait_time(stats); +} + +static void bfqg_stats_update_io_add(struct bfq_group *bfqg, + struct bfq_queue *bfqq, unsigned int op) +{ + blkg_rwstat_add(&bfqg->stats.queued, op, 1); + bfqg_stats_end_empty_time(&bfqg->stats); + if (!(bfqq == ((struct bfq_data *)bfqg->bfqd)->in_service_queue)) + bfqg_stats_set_start_group_wait_time(bfqg, bfqq_group(bfqq)); +} + +static void bfqg_stats_update_io_remove(struct bfq_group *bfqg, unsigned int op) +{ + blkg_rwstat_add(&bfqg->stats.queued, op, -1); +} + +static void bfqg_stats_update_io_merged(struct bfq_group *bfqg, unsigned int op) +{ + blkg_rwstat_add(&bfqg->stats.merged, op, 1); +} + +static void bfqg_stats_update_completion(struct bfq_group *bfqg, + uint64_t start_time, uint64_t io_start_time, unsigned int op) +{ + struct bfqg_stats *stats = &bfqg->stats; + unsigned long long now = sched_clock(); + + if (time_after64(now, io_start_time)) + blkg_rwstat_add(&stats->service_time, op, + now - io_start_time); + if (time_after64(io_start_time, start_time)) + blkg_rwstat_add(&stats->wait_time, op, + io_start_time - start_time); +} + +#else /* BFQ_GROUP_IOSCHED_ENABLED && CONFIG_DEBUG_BLK_CGROUP */ + +static inline void bfqg_stats_update_io_add(struct bfq_group *bfqg, + struct bfq_queue *bfqq, unsigned int op) { } +static inline void +bfqg_stats_update_io_remove(struct bfq_group *bfqg, unsigned int op) { } +static inline void +bfqg_stats_update_io_merged(struct bfq_group *bfqg, unsigned int op) { } +static inline void bfqg_stats_update_completion(struct bfq_group *bfqg, + uint64_t start_time, uint64_t io_start_time, + unsigned int op) { } +static inline void +bfqg_stats_set_start_group_wait_time(struct bfq_group *bfqg, + struct bfq_group *curr_bfqg) { } +static inline void bfqg_stats_end_empty_time(struct bfqg_stats *stats) { } +static inline void bfqg_stats_update_dequeue(struct bfq_group *bfqg) { } +static inline void bfqg_stats_set_start_empty_time(struct bfq_group *bfqg) { } +static inline void bfqg_stats_update_idle_time(struct bfq_group *bfqg) { } +static inline void bfqg_stats_set_start_idle_time(struct bfq_group *bfqg) { } +static inline void bfqg_stats_update_avg_queue_size(struct bfq_group *bfqg) { } + +#endif /* BFQ_GROUP_IOSCHED_ENABLED && CONFIG_DEBUG_BLK_CGROUP */ + +#ifdef BFQ_GROUP_IOSCHED_ENABLED +static struct blkcg_policy blkcg_policy_bfq; + +/* + * blk-cgroup policy-related handlers + * The following functions help in converting between blk-cgroup + * internal structures and BFQ-specific structures. + */ + +static struct bfq_group *pd_to_bfqg(struct blkg_policy_data *pd) +{ + return pd ? container_of(pd, struct bfq_group, pd) : NULL; +} + +static struct blkcg_gq *bfqg_to_blkg(struct bfq_group *bfqg) +{ + return pd_to_blkg(&bfqg->pd); +} + +static struct bfq_group *blkg_to_bfqg(struct blkcg_gq *blkg) +{ + struct blkg_policy_data *pd = blkg_to_pd(blkg, &blkcg_policy_bfq); + + return pd_to_bfqg(pd); +} + +/* + * bfq_group handlers + * The following functions help in navigating the bfq_group hierarchy + * by allowing to find the parent of a bfq_group or the bfq_group + * associated to a bfq_queue. + */ + +static struct bfq_group *bfqg_parent(struct bfq_group *bfqg) +{ + struct blkcg_gq *pblkg = bfqg_to_blkg(bfqg)->parent; + + return pblkg ? blkg_to_bfqg(pblkg) : NULL; +} + +static struct bfq_group *bfqq_group(struct bfq_queue *bfqq) +{ + struct bfq_entity *group_entity = bfqq->entity.parent; + + return group_entity ? container_of(group_entity, struct bfq_group, + entity) : + bfqq->bfqd->root_group; +} + +/* + * The following two functions handle get and put of a bfq_group by + * wrapping the related blk-cgroup hooks. + */ + +static void bfqg_get(struct bfq_group *bfqg) +{ +#ifdef BFQ_MQ + bfqg->ref++; +#else + blkg_get(bfqg_to_blkg(bfqg)); +#endif +} + +static void bfqg_put(struct bfq_group *bfqg) +{ +#ifdef BFQ_MQ + bfqg->ref--; + + BUG_ON(bfqg->ref < 0); + if (bfqg->ref == 0) + kfree(bfqg); +#else + blkg_put(bfqg_to_blkg(bfqg)); +#endif +} + +#ifdef BFQ_MQ +static void bfqg_and_blkg_get(struct bfq_group *bfqg) +{ + /* see comments in bfq_bic_update_cgroup for why refcounting bfqg */ + bfqg_get(bfqg); + + blkg_get(bfqg_to_blkg(bfqg)); +} + +static void bfqg_and_blkg_put(struct bfq_group *bfqg) +{ + bfqg_put(bfqg); + + blkg_put(bfqg_to_blkg(bfqg)); +} +#endif + +/* @stats = 0 */ +static void bfqg_stats_reset(struct bfqg_stats *stats) +{ +#ifdef CONFIG_DEBUG_BLK_CGROUP + /* queued stats shouldn't be cleared */ + blkg_rwstat_reset(&stats->merged); + blkg_rwstat_reset(&stats->service_time); + blkg_rwstat_reset(&stats->wait_time); + blkg_stat_reset(&stats->time); + blkg_stat_reset(&stats->avg_queue_size_sum); + blkg_stat_reset(&stats->avg_queue_size_samples); + blkg_stat_reset(&stats->dequeue); + blkg_stat_reset(&stats->group_wait_time); + blkg_stat_reset(&stats->idle_time); + blkg_stat_reset(&stats->empty_time); +#endif +} + +/* @to += @from */ +static void bfqg_stats_add_aux(struct bfqg_stats *to, struct bfqg_stats *from) +{ + if (!to || !from) + return; + +#ifdef CONFIG_DEBUG_BLK_CGROUP + /* queued stats shouldn't be cleared */ + blkg_rwstat_add_aux(&to->merged, &from->merged); + blkg_rwstat_add_aux(&to->service_time, &from->service_time); + blkg_rwstat_add_aux(&to->wait_time, &from->wait_time); + blkg_stat_add_aux(&from->time, &from->time); + blkg_stat_add_aux(&to->avg_queue_size_sum, &from->avg_queue_size_sum); + blkg_stat_add_aux(&to->avg_queue_size_samples, + &from->avg_queue_size_samples); + blkg_stat_add_aux(&to->dequeue, &from->dequeue); + blkg_stat_add_aux(&to->group_wait_time, &from->group_wait_time); + blkg_stat_add_aux(&to->idle_time, &from->idle_time); + blkg_stat_add_aux(&to->empty_time, &from->empty_time); +#endif +} + +/* + * Transfer @bfqg's stats to its parent's dead_stats so that the ancestors' + * recursive stats can still account for the amount used by this bfqg after + * it's gone. + */ +static void bfqg_stats_xfer_dead(struct bfq_group *bfqg) +{ + struct bfq_group *parent; + + if (!bfqg) /* root_group */ + return; + + parent = bfqg_parent(bfqg); + + lockdep_assert_held(bfqg_to_blkg(bfqg)->q->queue_lock); + + if (unlikely(!parent)) + return; + + bfqg_stats_add_aux(&parent->stats, &bfqg->stats); + bfqg_stats_reset(&bfqg->stats); +} + +static void bfq_init_entity(struct bfq_entity *entity, + struct bfq_group *bfqg) +{ + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + + entity->weight = entity->new_weight; + entity->orig_weight = entity->new_weight; + if (bfqq) { + bfqq->ioprio = bfqq->new_ioprio; + bfqq->ioprio_class = bfqq->new_ioprio_class; +#ifdef BFQ_MQ + /* + * Make sure that bfqg and its associated blkg do not + * disappear before entity. + */ + bfq_log_bfqq(bfqq->bfqd, bfqq, "getting bfqg %p and blkg\n", + bfqg); + + bfqg_and_blkg_get(bfqg); +#else + bfqg_get(bfqg); +#endif + } + entity->parent = bfqg->my_entity; /* NULL for root group */ + entity->sched_data = &bfqg->sched_data; +} + +static void bfqg_stats_exit(struct bfqg_stats *stats) +{ +#ifdef CONFIG_DEBUG_BLK_CGROUP + blkg_rwstat_exit(&stats->merged); + blkg_rwstat_exit(&stats->service_time); + blkg_rwstat_exit(&stats->wait_time); + blkg_rwstat_exit(&stats->queued); + blkg_stat_exit(&stats->time); + blkg_stat_exit(&stats->avg_queue_size_sum); + blkg_stat_exit(&stats->avg_queue_size_samples); + blkg_stat_exit(&stats->dequeue); + blkg_stat_exit(&stats->group_wait_time); + blkg_stat_exit(&stats->idle_time); + blkg_stat_exit(&stats->empty_time); +#endif +} + +static int bfqg_stats_init(struct bfqg_stats *stats, gfp_t gfp) +{ +#ifdef CONFIG_DEBUG_BLK_CGROUP + if (blkg_rwstat_init(&stats->merged, gfp) || + blkg_rwstat_init(&stats->service_time, gfp) || + blkg_rwstat_init(&stats->wait_time, gfp) || + blkg_rwstat_init(&stats->queued, gfp) || + blkg_stat_init(&stats->time, gfp) || + blkg_stat_init(&stats->avg_queue_size_sum, gfp) || + blkg_stat_init(&stats->avg_queue_size_samples, gfp) || + blkg_stat_init(&stats->dequeue, gfp) || + blkg_stat_init(&stats->group_wait_time, gfp) || + blkg_stat_init(&stats->idle_time, gfp) || + blkg_stat_init(&stats->empty_time, gfp)) { + bfqg_stats_exit(stats); + return -ENOMEM; + } +#endif + + return 0; +} + +static struct bfq_group_data *cpd_to_bfqgd(struct blkcg_policy_data *cpd) +{ + return cpd ? container_of(cpd, struct bfq_group_data, pd) : NULL; +} + +static struct bfq_group_data *blkcg_to_bfqgd(struct blkcg *blkcg) +{ + return cpd_to_bfqgd(blkcg_to_cpd(blkcg, &blkcg_policy_bfq)); +} + +static struct blkcg_policy_data *bfq_cpd_alloc(gfp_t gfp) +{ + struct bfq_group_data *bgd; + + bgd = kzalloc(sizeof(*bgd), gfp); + if (!bgd) + return NULL; + return &bgd->pd; +} + +static void bfq_cpd_init(struct blkcg_policy_data *cpd) +{ + struct bfq_group_data *d = cpd_to_bfqgd(cpd); + + d->weight = cgroup_subsys_on_dfl(io_cgrp_subsys) ? + CGROUP_WEIGHT_DFL : BFQ_WEIGHT_LEGACY_DFL; +} + +static void bfq_cpd_free(struct blkcg_policy_data *cpd) +{ + kfree(cpd_to_bfqgd(cpd)); +} + +static struct blkg_policy_data *bfq_pd_alloc(gfp_t gfp, int node) +{ + struct bfq_group *bfqg; + + bfqg = kzalloc_node(sizeof(*bfqg), gfp, node); + if (!bfqg) + return NULL; + + if (bfqg_stats_init(&bfqg->stats, gfp)) { + kfree(bfqg); + return NULL; + } +#ifdef BFQ_MQ + /* see comments in bfq_bic_update_cgroup for why refcounting */ + bfqg_get(bfqg); +#endif + return &bfqg->pd; +} + +static void bfq_pd_init(struct blkg_policy_data *pd) +{ + struct blkcg_gq *blkg; + struct bfq_group *bfqg; + struct bfq_data *bfqd; + struct bfq_entity *entity; + struct bfq_group_data *d; + + blkg = pd_to_blkg(pd); + BUG_ON(!blkg); + bfqg = blkg_to_bfqg(blkg); + bfqd = blkg->q->elevator->elevator_data; + BUG_ON(bfqg == bfqd->root_group); + entity = &bfqg->entity; + d = blkcg_to_bfqgd(blkg->blkcg); + + entity->orig_weight = entity->weight = entity->new_weight = d->weight; + entity->my_sched_data = &bfqg->sched_data; + bfqg->my_entity = entity; /* + * the root_group's will be set to NULL + * in bfq_init_queue() + */ + bfqg->bfqd = bfqd; + bfqg->active_entities = 0; + bfqg->rq_pos_tree = RB_ROOT; +} + +static void bfq_pd_free(struct blkg_policy_data *pd) +{ + struct bfq_group *bfqg = pd_to_bfqg(pd); + + bfqg_stats_exit(&bfqg->stats); +#ifdef BFQ_MQ + bfqg_put(bfqg); +#else + kfree(bfqg); +#endif +} + +static void bfq_pd_reset_stats(struct blkg_policy_data *pd) +{ + struct bfq_group *bfqg = pd_to_bfqg(pd); + + bfqg_stats_reset(&bfqg->stats); +} + +static void bfq_group_set_parent(struct bfq_group *bfqg, + struct bfq_group *parent) +{ + struct bfq_entity *entity; + + BUG_ON(!parent); + BUG_ON(!bfqg); + BUG_ON(bfqg == parent); + + entity = &bfqg->entity; + entity->parent = parent->my_entity; + entity->sched_data = &parent->sched_data; +} + +static struct bfq_group *bfq_lookup_bfqg(struct bfq_data *bfqd, + struct blkcg *blkcg) +{ + struct blkcg_gq *blkg; + + blkg = blkg_lookup(blkcg, bfqd->queue); + if (likely(blkg)) + return blkg_to_bfqg(blkg); + return NULL; +} + +static struct bfq_group *bfq_find_set_group(struct bfq_data *bfqd, + struct blkcg *blkcg) +{ + struct bfq_group *bfqg, *parent; + struct bfq_entity *entity; + + bfqg = bfq_lookup_bfqg(bfqd, blkcg); + + if (unlikely(!bfqg)) + return NULL; + + /* + * Update chain of bfq_groups as we might be handling a leaf group + * which, along with some of its relatives, has not been hooked yet + * to the private hierarchy of BFQ. + */ + entity = &bfqg->entity; + for_each_entity(entity) { + bfqg = container_of(entity, struct bfq_group, entity); + BUG_ON(!bfqg); + if (bfqg != bfqd->root_group) { + parent = bfqg_parent(bfqg); + if (!parent) + parent = bfqd->root_group; + BUG_ON(!parent); + bfq_group_set_parent(bfqg, parent); + } + } + + return bfqg; +} + +static void bfq_pos_tree_add_move(struct bfq_data *bfqd, + struct bfq_queue *bfqq); + +static void bfq_bfqq_expire(struct bfq_data *bfqd, + struct bfq_queue *bfqq, + bool compensate, + enum bfqq_expiration reason); + +/** + * bfq_bfqq_move - migrate @bfqq to @bfqg. + * @bfqd: queue descriptor. + * @bfqq: the queue to move. + * @bfqg: the group to move to. + * + * Move @bfqq to @bfqg, deactivating it from its old group and reactivating + * it on the new one. Avoid putting the entity on the old group idle tree. + * +#ifdef BFQ_MQ + * Must be called under the scheduler lock, to make sure that the blkg + * owning @bfqg does not disappear (see comments in + * bfq_bic_update_cgroup on guaranteeing the consistency of blkg + * objects). +#else + * Must be called under the queue lock; the cgroup owning @bfqg must + * not disappear (by now this just means that we are called under + * rcu_read_lock()). +#endif + */ +static void bfq_bfqq_move(struct bfq_data *bfqd, struct bfq_queue *bfqq, + struct bfq_group *bfqg) +{ + struct bfq_entity *entity = &bfqq->entity; + + BUG_ON(!bfq_bfqq_busy(bfqq) && !RB_EMPTY_ROOT(&bfqq->sort_list)); + BUG_ON(!RB_EMPTY_ROOT(&bfqq->sort_list) && !entity->on_st); + BUG_ON(bfq_bfqq_busy(bfqq) && RB_EMPTY_ROOT(&bfqq->sort_list) + && entity->on_st && + bfqq != bfqd->in_service_queue); + BUG_ON(!bfq_bfqq_busy(bfqq) && bfqq == bfqd->in_service_queue); + + /* If bfqq is empty, then bfq_bfqq_expire also invokes + * bfq_del_bfqq_busy, thereby removing bfqq and its entity + * from data structures related to current group. Otherwise we + * need to remove bfqq explicitly with bfq_deactivate_bfqq, as + * we do below. + */ + if (bfqq == bfqd->in_service_queue) + bfq_bfqq_expire(bfqd, bfqd->in_service_queue, + false, BFQ_BFQQ_PREEMPTED); + + BUG_ON(entity->on_st && !bfq_bfqq_busy(bfqq) + && &bfq_entity_service_tree(entity)->idle != + entity->tree); + + BUG_ON(RB_EMPTY_ROOT(&bfqq->sort_list) && bfq_bfqq_busy(bfqq)); + + if (bfq_bfqq_busy(bfqq)) + bfq_deactivate_bfqq(bfqd, bfqq, false, false); + else if (entity->on_st) { + BUG_ON(&bfq_entity_service_tree(entity)->idle != + entity->tree); + bfq_put_idle_entity(bfq_entity_service_tree(entity), entity); + } +#ifdef BFQ_MQ + bfq_log_bfqq(bfqq->bfqd, bfqq, "putting blkg and bfqg %p\n", bfqg); + + bfqg_and_blkg_put(bfqq_group(bfqq)); +#else + bfqg_put(bfqq_group(bfqq)); +#endif + + entity->parent = bfqg->my_entity; + entity->sched_data = &bfqg->sched_data; +#ifdef BFQ_MQ + bfq_log_bfqq(bfqq->bfqd, bfqq, "getting blkg and bfqg %p\n", bfqg); + + /* pin down bfqg and its associated blkg */ + bfqg_and_blkg_get(bfqg); +#else + bfqg_get(bfqg); +#endif + + BUG_ON(RB_EMPTY_ROOT(&bfqq->sort_list) && bfq_bfqq_busy(bfqq)); + if (bfq_bfqq_busy(bfqq)) { + bfq_pos_tree_add_move(bfqd, bfqq); + bfq_activate_bfqq(bfqd, bfqq); + } + + if (!bfqd->in_service_queue && !bfqd->rq_in_driver) + bfq_schedule_dispatch(bfqd); + BUG_ON(entity->on_st && !bfq_bfqq_busy(bfqq) + && &bfq_entity_service_tree(entity)->idle != + entity->tree); +} + +/** + * __bfq_bic_change_cgroup - move @bic to @cgroup. + * @bfqd: the queue descriptor. + * @bic: the bic to move. + * @blkcg: the blk-cgroup to move to. + * +#ifdef BFQ_MQ + * Move bic to blkcg, assuming that bfqd->lock is held; which makes + * sure that the reference to cgroup is valid across the call (see + * comments in bfq_bic_update_cgroup on this issue) +#else + * Move bic to blkcg, assuming that bfqd->queue is locked; the caller + * has to make sure that the reference to cgroup is valid across the call. +#endif + * + * NOTE: an alternative approach might have been to store the current + * cgroup in bfqq and getting a reference to it, reducing the lookup + * time here, at the price of slightly more complex code. + */ +static struct bfq_group *__bfq_bic_change_cgroup(struct bfq_data *bfqd, + struct bfq_io_cq *bic, + struct blkcg *blkcg) +{ + struct bfq_queue *async_bfqq = bic_to_bfqq(bic, 0); + struct bfq_queue *sync_bfqq = bic_to_bfqq(bic, 1); + struct bfq_group *bfqg; + struct bfq_entity *entity; + + bfqg = bfq_find_set_group(bfqd, blkcg); + + if (unlikely(!bfqg)) + bfqg = bfqd->root_group; + + if (async_bfqq) { + entity = &async_bfqq->entity; + + if (entity->sched_data != &bfqg->sched_data) { + bic_set_bfqq(bic, NULL, 0); + bfq_log_bfqq(bfqd, async_bfqq, + "%p %d", + async_bfqq, + async_bfqq->ref); + bfq_put_queue(async_bfqq); + } + } + + if (sync_bfqq) { + entity = &sync_bfqq->entity; + if (entity->sched_data != &bfqg->sched_data) + bfq_bfqq_move(bfqd, sync_bfqq, bfqg); + } + + return bfqg; +} + +static void bfq_bic_update_cgroup(struct bfq_io_cq *bic, struct bio *bio) +{ + struct bfq_data *bfqd = bic_to_bfqd(bic); + struct bfq_group *bfqg = NULL; + uint64_t serial_nr; + + rcu_read_lock(); + serial_nr = bio_blkcg(bio)->css.serial_nr; + + /* + * Check whether blkcg has changed. The condition may trigger + * spuriously on a newly created cic but there's no harm. + */ + if (unlikely(!bfqd) || likely(bic->blkcg_serial_nr == serial_nr)) + goto out; + + bfqg = __bfq_bic_change_cgroup(bfqd, bic, bio_blkcg(bio)); +#ifdef BFQ_MQ + /* + * Update blkg_path for bfq_log_* functions. We cache this + * path, and update it here, for the following + * reasons. Operations on blkg objects in blk-cgroup are + * protected with the request_queue lock, and not with the + * lock that protects the instances of this scheduler + * (bfqd->lock). This exposes BFQ to the following sort of + * race. + * + * The blkg_lookup performed in bfq_get_queue, protected + * through rcu, may happen to return the address of a copy of + * the original blkg. If this is the case, then the + * bfqg_and_blkg_get performed in bfq_get_queue, to pin down + * the blkg, is useless: it does not prevent blk-cgroup code + * from destroying both the original blkg and all objects + * directly or indirectly referred by the copy of the + * blkg. + * + * On the bright side, destroy operations on a blkg invoke, as + * a first step, hooks of the scheduler associated with the + * blkg. And these hooks are executed with bfqd->lock held for + * BFQ. As a consequence, for any blkg associated with the + * request queue this instance of the scheduler is attached + * to, we are guaranteed that such a blkg is not destroyed, and + * that all the pointers it contains are consistent, while we + * are holding bfqd->lock. A blkg_lookup performed with + * bfqd->lock held then returns a fully consistent blkg, which + * remains consistent until this lock is held. + * + * Thanks to the last fact, and to the fact that: (1) bfqg has + * been obtained through a blkg_lookup in the above + * assignment, and (2) bfqd->lock is being held, here we can + * safely use the policy data for the involved blkg (i.e., the + * field bfqg->pd) to get to the blkg associated with bfqg, + * and then we can safely use any field of blkg. After we + * release bfqd->lock, even just getting blkg through this + * bfqg may cause dangling references to be traversed, as + * bfqg->pd may not exist any more. + * + * In view of the above facts, here we cache, in the bfqg, any + * blkg data we may need for this bic, and for its associated + * bfq_queue. As of now, we need to cache only the path of the + * blkg, which is used in the bfq_log_* functions. + * + * Finally, note that bfqg itself needs to be protected from + * destruction on the blkg_free of the original blkg (which + * invokes bfq_pd_free). We use an additional private + * refcounter for bfqg, to let it disappear only after no + * bfq_queue refers to it any longer. + */ + blkg_path(bfqg_to_blkg(bfqg), bfqg->blkg_path, sizeof(bfqg->blkg_path)); +#endif + bic->blkcg_serial_nr = serial_nr; +out: + rcu_read_unlock(); +} + +/** + * bfq_flush_idle_tree - deactivate any entity on the idle tree of @st. + * @st: the service tree being flushed. + */ +static void bfq_flush_idle_tree(struct bfq_service_tree *st) +{ + struct bfq_entity *entity = st->first_idle; + + for (; entity ; entity = st->first_idle) + __bfq_deactivate_entity(entity, false); +} + +/** + * bfq_reparent_leaf_entity - move leaf entity to the root_group. + * @bfqd: the device data structure with the root group. + * @entity: the entity to move. + */ +static void bfq_reparent_leaf_entity(struct bfq_data *bfqd, + struct bfq_entity *entity) +{ + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + + BUG_ON(!bfqq); + bfq_bfqq_move(bfqd, bfqq, bfqd->root_group); +} + +/** + * bfq_reparent_active_entities - move to the root group all active + * entities. + * @bfqd: the device data structure with the root group. + * @bfqg: the group to move from. + * @st: the service tree with the entities. + */ +static void bfq_reparent_active_entities(struct bfq_data *bfqd, + struct bfq_group *bfqg, + struct bfq_service_tree *st) +{ + struct rb_root *active = &st->active; + struct bfq_entity *entity = NULL; + + if (!RB_EMPTY_ROOT(&st->active)) + entity = bfq_entity_of(rb_first(active)); + + for (; entity ; entity = bfq_entity_of(rb_first(active))) + bfq_reparent_leaf_entity(bfqd, entity); + + if (bfqg->sched_data.in_service_entity) + bfq_reparent_leaf_entity(bfqd, + bfqg->sched_data.in_service_entity); +} + +/** + * bfq_pd_offline - deactivate the entity associated with @pd, + * and reparent its children entities. + * @pd: descriptor of the policy going offline. + * + * blkio already grabs the queue_lock for us, so no need to use + * RCU-based magic + */ +static void bfq_pd_offline(struct blkg_policy_data *pd) +{ + struct bfq_service_tree *st; + struct bfq_group *bfqg; + struct bfq_data *bfqd; + struct bfq_entity *entity; +#ifdef BFQ_MQ + unsigned long flags; +#endif + int i; + + BUG_ON(!pd); + bfqg = pd_to_bfqg(pd); + BUG_ON(!bfqg); + bfqd = bfqg->bfqd; + BUG_ON(bfqd && !bfqd->root_group); + + entity = bfqg->my_entity; + +#ifdef BFQ_MQ + spin_lock_irqsave(&bfqd->lock, flags); +#endif + + if (!entity) /* root group */ + goto put_async_queues; + + /* + * Empty all service_trees belonging to this group before + * deactivating the group itself. + */ + for (i = 0; i < BFQ_IOPRIO_CLASSES; i++) { + BUG_ON(!bfqg->sched_data.service_tree); + st = bfqg->sched_data.service_tree + i; + /* + * The idle tree may still contain bfq_queues belonging + * to exited task because they never migrated to a different + * cgroup from the one being destroyed now. + */ + bfq_flush_idle_tree(st); + + /* + * It may happen that some queues are still active + * (busy) upon group destruction (if the corresponding + * processes have been forced to terminate). We move + * all the leaf entities corresponding to these queues + * to the root_group. + * Also, it may happen that the group has an entity + * in service, which is disconnected from the active + * tree: it must be moved, too. + * There is no need to put the sync queues, as the + * scheduler has taken no reference. + */ + bfq_reparent_active_entities(bfqd, bfqg, st); + BUG_ON(!RB_EMPTY_ROOT(&st->active)); + BUG_ON(!RB_EMPTY_ROOT(&st->idle)); + } + BUG_ON(bfqg->sched_data.next_in_service); + BUG_ON(bfqg->sched_data.in_service_entity); + + __bfq_deactivate_entity(entity, false); + +put_async_queues: + bfq_put_async_queues(bfqd, bfqg); + +#ifdef BFQ_MQ + spin_unlock_irqrestore(&bfqd->lock, flags); +#endif + /* + * @blkg is going offline and will be ignored by + * blkg_[rw]stat_recursive_sum(). Transfer stats to the parent so + * that they don't get lost. If IOs complete after this point, the + * stats for them will be lost. Oh well... + */ + bfqg_stats_xfer_dead(bfqg); +} + +static void bfq_end_wr_async(struct bfq_data *bfqd) +{ + struct blkcg_gq *blkg; + + list_for_each_entry(blkg, &bfqd->queue->blkg_list, q_node) { + struct bfq_group *bfqg = blkg_to_bfqg(blkg); + BUG_ON(!bfqg); + + bfq_end_wr_async_queues(bfqd, bfqg); + } + bfq_end_wr_async_queues(bfqd, bfqd->root_group); +} + +static int bfq_io_show_weight(struct seq_file *sf, void *v) +{ + struct blkcg *blkcg = css_to_blkcg(seq_css(sf)); + struct bfq_group_data *bfqgd = blkcg_to_bfqgd(blkcg); + unsigned int val = 0; + + if (bfqgd) + val = bfqgd->weight; + + seq_printf(sf, "%u\n", val); + + return 0; +} + +static int bfq_io_set_weight_legacy(struct cgroup_subsys_state *css, + struct cftype *cftype, + u64 val) +{ + struct blkcg *blkcg = css_to_blkcg(css); + struct bfq_group_data *bfqgd = blkcg_to_bfqgd(blkcg); + struct blkcg_gq *blkg; + int ret = -ERANGE; + + if (val < BFQ_MIN_WEIGHT || val > BFQ_MAX_WEIGHT) + return ret; + + ret = 0; + spin_lock_irq(&blkcg->lock); + bfqgd->weight = (unsigned short)val; + hlist_for_each_entry(blkg, &blkcg->blkg_list, blkcg_node) { + struct bfq_group *bfqg = blkg_to_bfqg(blkg); + + if (!bfqg) + continue; + /* + * Setting the prio_changed flag of the entity + * to 1 with new_weight == weight would re-set + * the value of the weight to its ioprio mapping. + * Set the flag only if necessary. + */ + if ((unsigned short)val != bfqg->entity.new_weight) { + bfqg->entity.new_weight = (unsigned short)val; + /* + * Make sure that the above new value has been + * stored in bfqg->entity.new_weight before + * setting the prio_changed flag. In fact, + * this flag may be read asynchronously (in + * critical sections protected by a different + * lock than that held here), and finding this + * flag set may cause the execution of the code + * for updating parameters whose value may + * depend also on bfqg->entity.new_weight (in + * __bfq_entity_update_weight_prio). + * This barrier makes sure that the new value + * of bfqg->entity.new_weight is correctly + * seen in that code. + */ + smp_wmb(); + bfqg->entity.prio_changed = 1; + } + } + spin_unlock_irq(&blkcg->lock); + + return ret; +} + +static ssize_t bfq_io_set_weight(struct kernfs_open_file *of, + char *buf, size_t nbytes, + loff_t off) +{ + u64 weight; + /* First unsigned long found in the file is used */ + int ret = kstrtoull(strim(buf), 0, &weight); + + if (ret) + return ret; + + return bfq_io_set_weight_legacy(of_css(of), NULL, weight); +} + +#ifdef CONFIG_DEBUG_BLK_CGROUP +static int bfqg_print_stat(struct seq_file *sf, void *v) +{ + blkcg_print_blkgs(sf, css_to_blkcg(seq_css(sf)), blkg_prfill_stat, + &blkcg_policy_bfq, seq_cft(sf)->private, false); + return 0; +} + +static int bfqg_print_rwstat(struct seq_file *sf, void *v) +{ + blkcg_print_blkgs(sf, css_to_blkcg(seq_css(sf)), blkg_prfill_rwstat, + &blkcg_policy_bfq, seq_cft(sf)->private, true); + return 0; +} + +static u64 bfqg_prfill_stat_recursive(struct seq_file *sf, + struct blkg_policy_data *pd, int off) +{ + u64 sum = blkg_stat_recursive_sum(pd_to_blkg(pd), + &blkcg_policy_bfq, off); + return __blkg_prfill_u64(sf, pd, sum); +} + +static u64 bfqg_prfill_rwstat_recursive(struct seq_file *sf, + struct blkg_policy_data *pd, int off) +{ + struct blkg_rwstat sum = blkg_rwstat_recursive_sum(pd_to_blkg(pd), + &blkcg_policy_bfq, + off); + return __blkg_prfill_rwstat(sf, pd, &sum); +} + +static int bfqg_print_stat_recursive(struct seq_file *sf, void *v) +{ + blkcg_print_blkgs(sf, css_to_blkcg(seq_css(sf)), + bfqg_prfill_stat_recursive, &blkcg_policy_bfq, + seq_cft(sf)->private, false); + return 0; +} + +static int bfqg_print_rwstat_recursive(struct seq_file *sf, void *v) +{ + blkcg_print_blkgs(sf, css_to_blkcg(seq_css(sf)), + bfqg_prfill_rwstat_recursive, &blkcg_policy_bfq, + seq_cft(sf)->private, true); + return 0; +} + +static u64 bfqg_prfill_sectors(struct seq_file *sf, struct blkg_policy_data *pd, + int off) +{ + u64 sum = blkg_rwstat_total(&pd->blkg->stat_bytes); + + return __blkg_prfill_u64(sf, pd, sum >> 9); +} + +static int bfqg_print_stat_sectors(struct seq_file *sf, void *v) +{ + blkcg_print_blkgs(sf, css_to_blkcg(seq_css(sf)), + bfqg_prfill_sectors, &blkcg_policy_bfq, 0, false); + return 0; +} + +static u64 bfqg_prfill_sectors_recursive(struct seq_file *sf, + struct blkg_policy_data *pd, int off) +{ + struct blkg_rwstat tmp = blkg_rwstat_recursive_sum(pd->blkg, NULL, + offsetof(struct blkcg_gq, stat_bytes)); + u64 sum = atomic64_read(&tmp.aux_cnt[BLKG_RWSTAT_READ]) + + atomic64_read(&tmp.aux_cnt[BLKG_RWSTAT_WRITE]); + + return __blkg_prfill_u64(sf, pd, sum >> 9); +} + +static int bfqg_print_stat_sectors_recursive(struct seq_file *sf, void *v) +{ + blkcg_print_blkgs(sf, css_to_blkcg(seq_css(sf)), + bfqg_prfill_sectors_recursive, &blkcg_policy_bfq, 0, + false); + return 0; +} + + +static u64 bfqg_prfill_avg_queue_size(struct seq_file *sf, + struct blkg_policy_data *pd, int off) +{ + struct bfq_group *bfqg = pd_to_bfqg(pd); + u64 samples = blkg_stat_read(&bfqg->stats.avg_queue_size_samples); + u64 v = 0; + + if (samples) { + v = blkg_stat_read(&bfqg->stats.avg_queue_size_sum); + v = div64_u64(v, samples); + } + __blkg_prfill_u64(sf, pd, v); + return 0; +} + +/* print avg_queue_size */ +static int bfqg_print_avg_queue_size(struct seq_file *sf, void *v) +{ + blkcg_print_blkgs(sf, css_to_blkcg(seq_css(sf)), + bfqg_prfill_avg_queue_size, &blkcg_policy_bfq, + 0, false); + return 0; +} +#endif /* CONFIG_DEBUG_BLK_CGROUP */ + +static struct bfq_group * +bfq_create_group_hierarchy(struct bfq_data *bfqd, int node) +{ + int ret; + + ret = blkcg_activate_policy(bfqd->queue, &blkcg_policy_bfq); + if (ret) + return NULL; + + return blkg_to_bfqg(bfqd->queue->root_blkg); +} + +#ifdef BFQ_MQ +#define BFQ_CGROUP_FNAME(param) "bfq-mq."#param +#else +#define BFQ_CGROUP_FNAME(param) "bfq-sq."#param +#endif + +static struct cftype bfq_blkcg_legacy_files[] = { + { + .name = BFQ_CGROUP_FNAME(weight), + .flags = CFTYPE_NOT_ON_ROOT, + .seq_show = bfq_io_show_weight, + .write_u64 = bfq_io_set_weight_legacy, + }, + + /* statistics, covers only the tasks in the bfqg */ + { + .name = BFQ_CGROUP_FNAME(io_service_bytes), + .private = (unsigned long)&blkcg_policy_bfq, + .seq_show = blkg_print_stat_bytes, + }, + { + .name = BFQ_CGROUP_FNAME(io_serviced), + .private = (unsigned long)&blkcg_policy_bfq, + .seq_show = blkg_print_stat_ios, + }, +#ifdef CONFIG_DEBUG_BLK_CGROUP + { + .name = BFQ_CGROUP_FNAME(time), + .private = offsetof(struct bfq_group, stats.time), + .seq_show = bfqg_print_stat, + }, + { + .name = BFQ_CGROUP_FNAME(sectors), + .seq_show = bfqg_print_stat_sectors, + }, + { + .name = BFQ_CGROUP_FNAME(io_service_time), + .private = offsetof(struct bfq_group, stats.service_time), + .seq_show = bfqg_print_rwstat, + }, + { + .name = BFQ_CGROUP_FNAME(io_wait_time), + .private = offsetof(struct bfq_group, stats.wait_time), + .seq_show = bfqg_print_rwstat, + }, + { + .name = BFQ_CGROUP_FNAME(io_merged), + .private = offsetof(struct bfq_group, stats.merged), + .seq_show = bfqg_print_rwstat, + }, + { + .name = BFQ_CGROUP_FNAME(io_queued), + .private = offsetof(struct bfq_group, stats.queued), + .seq_show = bfqg_print_rwstat, + }, +#endif /* CONFIG_DEBUG_BLK_CGROUP */ + + /* the same statictics which cover the bfqg and its descendants */ + { + .name = BFQ_CGROUP_FNAME(io_service_bytes_recursive), + .private = (unsigned long)&blkcg_policy_bfq, + .seq_show = blkg_print_stat_bytes_recursive, + }, + { + .name = BFQ_CGROUP_FNAME(io_serviced_recursive), + .private = (unsigned long)&blkcg_policy_bfq, + .seq_show = blkg_print_stat_ios_recursive, + }, +#ifdef CONFIG_DEBUG_BLK_CGROUP + { + .name = BFQ_CGROUP_FNAME(time_recursive), + .private = offsetof(struct bfq_group, stats.time), + .seq_show = bfqg_print_stat_recursive, + }, + { + .name = BFQ_CGROUP_FNAME(sectors_recursive), + .seq_show = bfqg_print_stat_sectors_recursive, + }, + { + .name = BFQ_CGROUP_FNAME(io_service_time_recursive), + .private = offsetof(struct bfq_group, stats.service_time), + .seq_show = bfqg_print_rwstat_recursive, + }, + { + .name = BFQ_CGROUP_FNAME(io_wait_time_recursive), + .private = offsetof(struct bfq_group, stats.wait_time), + .seq_show = bfqg_print_rwstat_recursive, + }, + { + .name = BFQ_CGROUP_FNAME(io_merged_recursive), + .private = offsetof(struct bfq_group, stats.merged), + .seq_show = bfqg_print_rwstat_recursive, + }, + { + .name = BFQ_CGROUP_FNAME(io_queued_recursive), + .private = offsetof(struct bfq_group, stats.queued), + .seq_show = bfqg_print_rwstat_recursive, + }, + { + .name = BFQ_CGROUP_FNAME(avg_queue_size), + .seq_show = bfqg_print_avg_queue_size, + }, + { + .name = BFQ_CGROUP_FNAME(group_wait_time), + .private = offsetof(struct bfq_group, stats.group_wait_time), + .seq_show = bfqg_print_stat, + }, + { + .name = BFQ_CGROUP_FNAME(idle_time), + .private = offsetof(struct bfq_group, stats.idle_time), + .seq_show = bfqg_print_stat, + }, + { + .name = BFQ_CGROUP_FNAME(empty_time), + .private = offsetof(struct bfq_group, stats.empty_time), + .seq_show = bfqg_print_stat, + }, + { + .name = BFQ_CGROUP_FNAME(dequeue), + .private = offsetof(struct bfq_group, stats.dequeue), + .seq_show = bfqg_print_stat, + }, +#endif /* CONFIG_DEBUG_BLK_CGROUP */ + { } /* terminate */ +}; + +static struct cftype bfq_blkg_files[] = { + { + .name = BFQ_CGROUP_FNAME(weight), + .flags = CFTYPE_NOT_ON_ROOT, + .seq_show = bfq_io_show_weight, + .write = bfq_io_set_weight, + }, + {} /* terminate */ +}; + +#undef BFQ_CGROUP_FNAME + +#else /* BFQ_GROUP_IOSCHED_ENABLED */ + +static void bfq_bfqq_move(struct bfq_data *bfqd, struct bfq_queue *bfqq, + struct bfq_group *bfqg) {} + +static void bfq_init_entity(struct bfq_entity *entity, + struct bfq_group *bfqg) +{ + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + + entity->weight = entity->new_weight; + entity->orig_weight = entity->new_weight; + if (bfqq) { + bfqq->ioprio = bfqq->new_ioprio; + bfqq->ioprio_class = bfqq->new_ioprio_class; + } + entity->sched_data = &bfqg->sched_data; +} + +static void bfq_bic_update_cgroup(struct bfq_io_cq *bic, struct bio *bio) {} + +static void bfq_end_wr_async(struct bfq_data *bfqd) +{ + bfq_end_wr_async_queues(bfqd, bfqd->root_group); +} + +static struct bfq_group *bfq_find_set_group(struct bfq_data *bfqd, + struct blkcg *blkcg) +{ + return bfqd->root_group; +} + +static struct bfq_group *bfqq_group(struct bfq_queue *bfqq) +{ + return bfqq->bfqd->root_group; +} + +static struct bfq_group * +bfq_create_group_hierarchy(struct bfq_data *bfqd, int node) +{ + struct bfq_group *bfqg; + int i; + + bfqg = kmalloc_node(sizeof(*bfqg), GFP_KERNEL | __GFP_ZERO, node); + if (!bfqg) + return NULL; + + for (i = 0; i < BFQ_IOPRIO_CLASSES; i++) + bfqg->sched_data.service_tree[i] = BFQ_SERVICE_TREE_INIT; + + return bfqg; +} +#endif diff --git a/block/bfq-ioc.c b/block/bfq-ioc.c new file mode 100644 index 00000000000..fb7bb8f08b7 --- /dev/null +++ b/block/bfq-ioc.c @@ -0,0 +1,36 @@ +/* + * BFQ: I/O context handling. + * + * Based on ideas and code from CFQ: + * Copyright (C) 2003 Jens Axboe + * + * Copyright (C) 2008 Fabio Checconi + * Paolo Valente + * + * Copyright (C) 2010 Paolo Valente + */ + +/** + * icq_to_bic - convert iocontext queue structure to bfq_io_cq. + * @icq: the iocontext queue. + */ +static struct bfq_io_cq *icq_to_bic(struct io_cq *icq) +{ + /* bic->icq is the first member, %NULL will convert to %NULL */ + return container_of(icq, struct bfq_io_cq, icq); +} + +/** + * bfq_bic_lookup - search into @ioc a bic associated to @bfqd. + * @bfqd: the lookup key. + * @ioc: the io_context of the process doing I/O. + * + * Queue lock must be held. + */ +static struct bfq_io_cq *bfq_bic_lookup(struct bfq_data *bfqd, + struct io_context *ioc) +{ + if (ioc) + return icq_to_bic(ioc_lookup_icq(ioc, bfqd->queue)); + return NULL; +} diff --git a/block/bfq-mq-iosched.c b/block/bfq-mq-iosched.c new file mode 100644 index 00000000000..cd6d5a2f838 --- /dev/null +++ b/block/bfq-mq-iosched.c @@ -0,0 +1,6426 @@ +/* + * Budget Fair Queueing (BFQ) I/O scheduler. + * + * Based on ideas and code from CFQ: + * Copyright (C) 2003 Jens Axboe + * + * Copyright (C) 2008 Fabio Checconi + * Paolo Valente + * + * Copyright (C) 2015 Paolo Valente + * + * Copyright (C) 2017 Paolo Valente + * + * Licensed under the GPL-2 as detailed in the accompanying COPYING.BFQ + * file. + * + * BFQ is a proportional-share I/O scheduler, with some extra + * low-latency capabilities. BFQ also supports full hierarchical + * scheduling through cgroups. Next paragraphs provide an introduction + * on BFQ inner workings. Details on BFQ benefits and usage can be + * found in Documentation/block/bfq-iosched.txt. + * + * BFQ is a proportional-share storage-I/O scheduling algorithm based + * on the slice-by-slice service scheme of CFQ. But BFQ assigns + * budgets, measured in number of sectors, to processes instead of + * time slices. The device is not granted to the in-service process + * for a given time slice, but until it has exhausted its assigned + * budget. This change from the time to the service domain enables BFQ + * to distribute the device throughput among processes as desired, + * without any distortion due to throughput fluctuations, or to device + * internal queueing. BFQ uses an ad hoc internal scheduler, called + * B-WF2Q+, to schedule processes according to their budgets. More + * precisely, BFQ schedules queues associated with processes. Thanks to + * the accurate policy of B-WF2Q+, BFQ can afford to assign high + * budgets to I/O-bound processes issuing sequential requests (to + * boost the throughput), and yet guarantee a low latency to + * interactive and soft real-time applications. + * + * In particular, BFQ schedules I/O so as to achieve the latter goal-- + * low latency for interactive and soft real-time applications--if the + * low_latency parameter is set (default configuration). To this + * purpose, BFQ constantly tries to detect whether the I/O requests in + * a bfq_queue come from an interactive or a soft real-time + * application. For brevity, in these cases, the queue is said to be + * interactive or soft real-time. In both cases, BFQ privileges the + * service of the queue, over that of non-interactive and + * non-soft-real-time queues. This privileging is performed, mainly, + * by raising the weight of the queue. So, for brevity, we call just + * weight-raising periods the time periods during which a queue is + * privileged, because deemed interactive or soft real-time. + * + * The detection of soft real-time queues/applications is described in + * detail in the comments on the function + * bfq_bfqq_softrt_next_start. On the other hand, the detection of an + * interactive queue works as follows: a queue is deemed interactive + * if it is constantly non empty only for a limited time interval, + * after which it does become empty. The queue may be deemed + * interactive again (for a limited time), if it restarts being + * constantly non empty, provided that this happens only after the + * queue has remained empty for a given minimum idle time. + * + * By default, BFQ computes automatically the above maximum time + * interval, i.e., the time interval after which a constantly + * non-empty queue stops being deemed interactive. Since a queue is + * weight-raised while it is deemed interactive, this maximum time + * interval happens to coincide with the (maximum) duration of the + * weight-raising for interactive queues. + * + * NOTE: if the main or only goal, with a given device, is to achieve + * the maximum-possible throughput at all times, then do switch off + * all low-latency heuristics for that device, by setting low_latency + * to 0. + * + * BFQ is described in [1], where also a reference to the initial, + * more theoretical paper on BFQ can be found. The interested reader + * can find in the latter paper full details on the main algorithm, as + * well as formulas of the guarantees and formal proofs of all the + * properties. With respect to the version of BFQ presented in these + * papers, this implementation adds a few more heuristics, such as the + * one that guarantees a low latency to soft real-time applications, + * and a hierarchical extension based on H-WF2Q+. + * + * B-WF2Q+ is based on WF2Q+, that is described in [2], together with + * H-WF2Q+, while the augmented tree used to implement B-WF2Q+ with O(log N) + * complexity derives from the one introduced with EEVDF in [3]. + * + * [1] P. Valente, A. Avanzini, "Evolution of the BFQ Storage I/O + * Scheduler", Proceedings of the First Workshop on Mobile System + * Technologies (MST-2015), May 2015. + * http://algogroup.unimore.it/people/paolo/disk_sched/mst-2015.pdf + * + * http://algogroup.unimo.it/people/paolo/disk_sched/bf1-v1-suite-results.pdf + * + * [2] Jon C.R. Bennett and H. Zhang, ``Hierarchical Packet Fair Queueing + * Algorithms,'' IEEE/ACM Transactions on Networking, 5(5):675-689, + * Oct 1997. + * + * http://www.cs.cmu.edu/~hzhang/papers/TON-97-Oct.ps.gz + * + * [3] I. Stoica and H. Abdel-Wahab, ``Earliest Eligible Virtual Deadline + * First: A Flexible and Accurate Mechanism for Proportional Share + * Resource Allocation,'' technical report. + * + * http://www.cs.berkeley.edu/~istoica/papers/eevdf-tr-95.pdf + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "blk.h" +#include "blk-mq.h" +#include "blk-mq-tag.h" +#include "blk-mq-sched.h" +#include "bfq-mq.h" +#include "blk-wbt.h" + +/* Expiration time of sync (0) and async (1) requests, in ns. */ +static const u64 bfq_fifo_expire[2] = { NSEC_PER_SEC / 4, NSEC_PER_SEC / 8 }; + +/* Maximum backwards seek, in KiB. */ +static const int bfq_back_max = (16 * 1024); + +/* Penalty of a backwards seek, in number of sectors. */ +static const int bfq_back_penalty = 2; + +/* Idling period duration, in ns. */ +static u32 bfq_slice_idle = (NSEC_PER_SEC / 125); + +/* Minimum number of assigned budgets for which stats are safe to compute. */ +static const int bfq_stats_min_budgets = 194; + +/* Default maximum budget values, in sectors and number of requests. */ +static const int bfq_default_max_budget = (16 * 1024); + +/* + * When a sync request is dispatched, the queue that contains that + * request, and all the ancestor entities of that queue, are charged + * with the number of sectors of the request. In constrast, if the + * request is async, then the queue and its ancestor entities are + * charged with the number of sectors of the request, multiplied by + * the factor below. This throttles the bandwidth for async I/O, + * w.r.t. to sync I/O, and it is done to counter the tendency of async + * writes to steal I/O throughput to reads. + * + * The current value of this parameter is the result of a tuning with + * several hardware and software configurations. We tried to find the + * lowest value for which writes do not cause noticeable problems to + * reads. In fact, the lower this parameter, the stabler I/O control, + * in the following respect. The lower this parameter is, the less + * the bandwidth enjoyed by a group decreases + * - when the group does writes, w.r.t. to when it does reads; + * - when other groups do reads, w.r.t. to when they do writes. + */ +static const int bfq_async_charge_factor = 3; + +/* Default timeout values, in jiffies, approximating CFQ defaults. */ +static const int bfq_timeout = (HZ / 8); + +/* + * Time limit for merging (see comments in bfq_setup_cooperator). Set + * to the slowest value that, in our tests, proved to be effective in + * removing false positives, while not causing true positives to miss + * queue merging. + * + * As can be deduced from the low time limit below, queue merging, if + * successful, happens at the very beggining of the I/O of the involved + * cooperating processes, as a consequence of the arrival of the very + * first requests from each cooperator. After that, there is very + * little chance to find cooperators. + */ +static const unsigned long bfq_merge_time_limit = HZ/10; + +#define MAX_LENGTH_REASON_NAME 25 + +static const char reason_name[][MAX_LENGTH_REASON_NAME] = {"TOO_IDLE", +"BUDGET_TIMEOUT", "BUDGET_EXHAUSTED", "NO_MORE_REQUESTS", +"PREEMPTED"}; + +static struct kmem_cache *bfq_pool; + +/* Below this threshold (in ns), we consider thinktime immediate. */ +#define BFQ_MIN_TT (2 * NSEC_PER_MSEC) + +/* hw_tag detection: parallel requests threshold and min samples needed. */ +#define BFQ_HW_QUEUE_THRESHOLD 4 +#define BFQ_HW_QUEUE_SAMPLES 32 + +#define BFQQ_SEEK_THR (sector_t)(8 * 100) +#define BFQQ_SECT_THR_NONROT (sector_t)(2 * 32) +#define BFQQ_CLOSE_THR (sector_t)(8 * 1024) +#define BFQQ_SEEKY(bfqq) (hweight32(bfqq->seek_history) > 19) + +/* Min number of samples required to perform peak-rate update */ +#define BFQ_RATE_MIN_SAMPLES 32 +/* Min observation time interval required to perform a peak-rate update (ns) */ +#define BFQ_RATE_MIN_INTERVAL (300*NSEC_PER_MSEC) +/* Target observation time interval for a peak-rate update (ns) */ +#define BFQ_RATE_REF_INTERVAL NSEC_PER_SEC + +/* + * Shift used for peak-rate fixed precision calculations. + * With + * - the current shift: 16 positions + * - the current type used to store rate: u32 + * - the current unit of measure for rate: [sectors/usec], or, more precisely, + * [(sectors/usec) / 2^BFQ_RATE_SHIFT] to take into account the shift, + * the range of rates that can be stored is + * [1 / 2^BFQ_RATE_SHIFT, 2^(32 - BFQ_RATE_SHIFT)] sectors/usec = + * [1 / 2^16, 2^16] sectors/usec = [15e-6, 65536] sectors/usec = + * [15, 65G] sectors/sec + * Which, assuming a sector size of 512B, corresponds to a range of + * [7.5K, 33T] B/sec + */ +#define BFQ_RATE_SHIFT 16 + +/* + * When configured for computing the duration of the weight-raising + * for interactive queues automatically (see the comments at the + * beginning of this file), BFQ does it using the following formula: + * duration = (ref_rate / r) * ref_wr_duration, + * where r is the peak rate of the device, and ref_rate and + * ref_wr_duration are two reference parameters. In particular, + * ref_rate is the peak rate of the reference storage device (see + * below), and ref_wr_duration is about the maximum time needed, with + * BFQ and while reading two files in parallel, to load typical large + * applications on the reference device (see the comments on + * max_service_from_wr below, for more details on how ref_wr_duration + * is obtained). In practice, the slower/faster the device at hand + * is, the more/less it takes to load applications with respect to the + * reference device. Accordingly, the longer/shorter BFQ grants + * weight raising to interactive applications. + * + * BFQ uses two different reference pairs (ref_rate, ref_wr_duration), + * depending on whether the device is rotational or non-rotational. + * + * In the following definitions, ref_rate[0] and ref_wr_duration[0] + * are the reference values for a rotational device, whereas + * ref_rate[1] and ref_wr_duration[1] are the reference values for a + * non-rotational device. The reference rates are not the actual peak + * rates of the devices used as a reference, but slightly lower + * values. The reason for using slightly lower values is that the + * peak-rate estimator tends to yield slightly lower values than the + * actual peak rate (it can yield the actual peak rate only if there + * is only one process doing I/O, and the process does sequential + * I/O). + * + * The reference peak rates are measured in sectors/usec, left-shifted + * by BFQ_RATE_SHIFT. + */ +static int ref_rate[2] = {14000, 33000}; +/* + * To improve readability, a conversion function is used to initialize + * the following array, which entails that the array can be + * initialized only in a function. + */ +static int ref_wr_duration[2]; + +/* + * BFQ uses the above-detailed, time-based weight-raising mechanism to + * privilege interactive tasks. This mechanism is vulnerable to the + * following false positives: I/O-bound applications that will go on + * doing I/O for much longer than the duration of weight + * raising. These applications have basically no benefit from being + * weight-raised at the beginning of their I/O. On the opposite end, + * while being weight-raised, these applications + * a) unjustly steal throughput to applications that may actually need + * low latency; + * b) make BFQ uselessly perform device idling; device idling results + * in loss of device throughput with most flash-based storage, and may + * increase latencies when used purposelessly. + * + * BFQ tries to reduce these problems, by adopting the following + * countermeasure. To introduce this countermeasure, we need first to + * finish explaining how the duration of weight-raising for + * interactive tasks is computed. + * + * For a bfq_queue deemed as interactive, the duration of weight + * raising is dynamically adjusted, as a function of the estimated + * peak rate of the device, so as to be equal to the time needed to + * execute the 'largest' interactive task we benchmarked so far. By + * largest task, we mean the task for which each involved process has + * to do more I/O than for any of the other tasks we benchmarked. This + * reference interactive task is the start-up of LibreOffice Writer, + * and in this task each process/bfq_queue needs to have at most ~110K + * sectors transferred. + * + * This last piece of information enables BFQ to reduce the actual + * duration of weight-raising for at least one class of I/O-bound + * applications: those doing sequential or quasi-sequential I/O. An + * example is file copy. In fact, once started, the main I/O-bound + * processes of these applications usually consume the above 110K + * sectors in much less time than the processes of an application that + * is starting, because these I/O-bound processes will greedily devote + * almost all their CPU cycles only to their target, + * throughput-friendly I/O operations. This is even more true if BFQ + * happens to be underestimating the device peak rate, and thus + * overestimating the duration of weight raising. But, according to + * our measurements, once transferred 110K sectors, these processes + * have no right to be weight-raised any longer. + * + * Basing on the last consideration, BFQ ends weight-raising for a + * bfq_queue if the latter happens to have received an amount of + * service at least equal to the following constant. The constant is + * set to slightly more than 110K, to have a minimum safety margin. + * + * This early ending of weight-raising reduces the amount of time + * during which interactive false positives cause the two problems + * described at the beginning of these comments. + */ +static const unsigned long max_service_from_wr = 120000; + +#define BFQ_SERVICE_TREE_INIT ((struct bfq_service_tree) \ + { RB_ROOT, RB_ROOT, NULL, NULL, 0, 0 }) + +#define RQ_BIC(rq) icq_to_bic((rq)->elv.priv[0]) +#define RQ_BFQQ(rq) ((rq)->elv.priv[1]) + +/** + * icq_to_bic - convert iocontext queue structure to bfq_io_cq. + * @icq: the iocontext queue. + */ +static struct bfq_io_cq *icq_to_bic(struct io_cq *icq) +{ + /* bic->icq is the first member, %NULL will convert to %NULL */ + return container_of(icq, struct bfq_io_cq, icq); +} + +/** + * bfq_bic_lookup - search into @ioc a bic associated to @bfqd. + * @bfqd: the lookup key. + * @ioc: the io_context of the process doing I/O. + * @q: the request queue. + */ +static struct bfq_io_cq *bfq_bic_lookup(struct bfq_data *bfqd, + struct io_context *ioc, + struct request_queue *q) +{ + if (ioc) { + unsigned long flags; + struct bfq_io_cq *icq; + + spin_lock_irqsave(q->queue_lock, flags); + icq = icq_to_bic(ioc_lookup_icq(ioc, q)); + spin_unlock_irqrestore(q->queue_lock, flags); + + return icq; + } + + return NULL; +} + +/* + * Scheduler run of queue, if there are requests pending and no one in the + * driver that will restart queueing. + */ +static void bfq_schedule_dispatch(struct bfq_data *bfqd) +{ + if (bfqd->queued != 0) { + bfq_log(bfqd, ""); + blk_mq_run_hw_queues(bfqd->queue, true); + } +} + +#define BFQ_MQ +#include "bfq-sched.c" +#include "bfq-cgroup-included.c" + +#define bfq_class_idle(bfqq) ((bfqq)->ioprio_class == IOPRIO_CLASS_IDLE) +#define bfq_class_rt(bfqq) ((bfqq)->ioprio_class == IOPRIO_CLASS_RT) + +#define bfq_sample_valid(samples) ((samples) > 80) + +/* + * Lifted from AS - choose which of rq1 and rq2 that is best served now. + * We choose the request that is closesr to the head right now. Distance + * behind the head is penalized and only allowed to a certain extent. + */ +static struct request *bfq_choose_req(struct bfq_data *bfqd, + struct request *rq1, + struct request *rq2, + sector_t last) +{ + sector_t s1, s2, d1 = 0, d2 = 0; + unsigned long back_max; +#define BFQ_RQ1_WRAP 0x01 /* request 1 wraps */ +#define BFQ_RQ2_WRAP 0x02 /* request 2 wraps */ + unsigned int wrap = 0; /* bit mask: requests behind the disk head? */ + + if (!rq1 || rq1 == rq2) + return rq2; + if (!rq2) + return rq1; + + if (rq_is_sync(rq1) && !rq_is_sync(rq2)) + return rq1; + else if (rq_is_sync(rq2) && !rq_is_sync(rq1)) + return rq2; + if ((rq1->cmd_flags & REQ_META) && !(rq2->cmd_flags & REQ_META)) + return rq1; + else if ((rq2->cmd_flags & REQ_META) && !(rq1->cmd_flags & REQ_META)) + return rq2; + + s1 = blk_rq_pos(rq1); + s2 = blk_rq_pos(rq2); + + /* + * By definition, 1KiB is 2 sectors. + */ + back_max = bfqd->bfq_back_max * 2; + + /* + * Strict one way elevator _except_ in the case where we allow + * short backward seeks which are biased as twice the cost of a + * similar forward seek. + */ + if (s1 >= last) + d1 = s1 - last; + else if (s1 + back_max >= last) + d1 = (last - s1) * bfqd->bfq_back_penalty; + else + wrap |= BFQ_RQ1_WRAP; + + if (s2 >= last) + d2 = s2 - last; + else if (s2 + back_max >= last) + d2 = (last - s2) * bfqd->bfq_back_penalty; + else + wrap |= BFQ_RQ2_WRAP; + + /* Found required data */ + + /* + * By doing switch() on the bit mask "wrap" we avoid having to + * check two variables for all permutations: --> faster! + */ + switch (wrap) { + case 0: /* common case for CFQ: rq1 and rq2 not wrapped */ + if (d1 < d2) + return rq1; + else if (d2 < d1) + return rq2; + + if (s1 >= s2) + return rq1; + else + return rq2; + + case BFQ_RQ2_WRAP: + return rq1; + case BFQ_RQ1_WRAP: + return rq2; + case (BFQ_RQ1_WRAP|BFQ_RQ2_WRAP): /* both rqs wrapped */ + default: + /* + * Since both rqs are wrapped, + * start with the one that's further behind head + * (--> only *one* back seek required), + * since back seek takes more time than forward. + */ + if (s1 <= s2) + return rq1; + else + return rq2; + } +} + +/* + * See the comments on bfq_limit_depth for the purpose of + * the depths set in the function. + */ +static void bfq_update_depths(struct bfq_data *bfqd, struct sbitmap_queue *bt) +{ + bfqd->sb_shift = bt->sb.shift; + + /* + * In-word depths if no bfq_queue is being weight-raised: + * leaving 25% of tags only for sync reads. + * + * In next formulas, right-shift the value + * (1U<sb_shift), instead of computing directly + * (1U<<(bfqd->sb_shift - something)), to be robust against + * any possible value of bfqd->sb_shift, without having to + * limit 'something'. + */ + /* no more than 50% of tags for async I/O */ + bfqd->word_depths[0][0] = max((1U<sb_shift)>>1, 1U); + /* + * no more than 75% of tags for sync writes (25% extra tags + * w.r.t. async I/O, to prevent async I/O from starving sync + * writes) + */ + bfqd->word_depths[0][1] = max(((1U<sb_shift) * 3)>>2, 1U); + + /* + * In-word depths in case some bfq_queue is being weight- + * raised: leaving ~63% of tags for sync reads. This is the + * highest percentage for which, in our tests, application + * start-up times didn't suffer from any regression due to tag + * shortage. + */ + /* no more than ~18% of tags for async I/O */ + bfqd->word_depths[1][0] = max(((1U<sb_shift) * 3)>>4, 1U); + /* no more than ~37% of tags for sync writes (~20% extra tags) */ + bfqd->word_depths[1][1] = max(((1U<sb_shift) * 6)>>4, 1U); +} + +/* + * Async I/O can easily starve sync I/O (both sync reads and sync + * writes), by consuming all tags. Similarly, storms of sync writes, + * such as those that sync(2) may trigger, can starve sync reads. + * Limit depths of async I/O and sync writes so as to counter both + * problems. + */ +static void bfq_limit_depth(unsigned int op, struct blk_mq_alloc_data *data) +{ + struct blk_mq_tags *tags = blk_mq_tags_from_data(data); + struct bfq_data *bfqd = data->q->elevator->elevator_data; + struct sbitmap_queue *bt; + + if (op_is_sync(op) && !op_is_write(op)) + return; + + if (data->flags & BLK_MQ_REQ_RESERVED) { + if (unlikely(!tags->nr_reserved_tags)) { + WARN_ON_ONCE(1); + return; + } + bt = &tags->breserved_tags; + } else + bt = &tags->bitmap_tags; + + if (unlikely(bfqd->sb_shift != bt->sb.shift)) + bfq_update_depths(bfqd, bt); + + data->shallow_depth = + bfqd->word_depths[!!bfqd->wr_busy_queues][op_is_sync(op)]; + + bfq_log(bfqd, "wr_busy %d sync %d depth %u", + bfqd->wr_busy_queues, op_is_sync(op), + data->shallow_depth); +} + +static struct bfq_queue * +bfq_rq_pos_tree_lookup(struct bfq_data *bfqd, struct rb_root *root, + sector_t sector, struct rb_node **ret_parent, + struct rb_node ***rb_link) +{ + struct rb_node **p, *parent; + struct bfq_queue *bfqq = NULL; + + parent = NULL; + p = &root->rb_node; + while (*p) { + struct rb_node **n; + + parent = *p; + bfqq = rb_entry(parent, struct bfq_queue, pos_node); + + /* + * Sort strictly based on sector. Smallest to the left, + * largest to the right. + */ + if (sector > blk_rq_pos(bfqq->next_rq)) + n = &(*p)->rb_right; + else if (sector < blk_rq_pos(bfqq->next_rq)) + n = &(*p)->rb_left; + else + break; + p = n; + bfqq = NULL; + } + + *ret_parent = parent; + if (rb_link) + *rb_link = p; + + bfq_log(bfqd, "%llu: returning %d", + (unsigned long long) sector, + bfqq ? bfqq->pid : 0); + + return bfqq; +} + +static bool bfq_too_late_for_merging(struct bfq_queue *bfqq) +{ + return bfqq->service_from_backlogged > 0 && + time_is_before_jiffies(bfqq->first_IO_time + + bfq_merge_time_limit); +} + +static void bfq_pos_tree_add_move(struct bfq_data *bfqd, struct bfq_queue *bfqq) +{ + struct rb_node **p, *parent; + struct bfq_queue *__bfqq; + + if (bfqq->pos_root) { + rb_erase(&bfqq->pos_node, bfqq->pos_root); + bfqq->pos_root = NULL; + } + + /* + * bfqq cannot be merged any longer (see comments in + * bfq_setup_cooperator): no point in adding bfqq into the + * position tree. + */ + if (bfq_too_late_for_merging(bfqq)) + return; + + if (bfq_class_idle(bfqq)) + return; + if (!bfqq->next_rq) + return; + + bfqq->pos_root = &bfq_bfqq_to_bfqg(bfqq)->rq_pos_tree; + __bfqq = bfq_rq_pos_tree_lookup(bfqd, bfqq->pos_root, + blk_rq_pos(bfqq->next_rq), &parent, &p); + if (!__bfqq) { + rb_link_node(&bfqq->pos_node, parent, p); + rb_insert_color(&bfqq->pos_node, bfqq->pos_root); + } else + bfqq->pos_root = NULL; +} + +/* + * Tell whether there are active queues or groups with differentiated weights. + */ +static bool bfq_differentiated_weights(struct bfq_data *bfqd) +{ + /* + * For weights to differ, at least one of the trees must contain + * at least two nodes. + */ + return (!RB_EMPTY_ROOT(&bfqd->queue_weights_tree) && + (bfqd->queue_weights_tree.rb_node->rb_left || + bfqd->queue_weights_tree.rb_node->rb_right) +#ifdef BFQ_GROUP_IOSCHED_ENABLED + ) || + (!RB_EMPTY_ROOT(&bfqd->group_weights_tree) && + (bfqd->group_weights_tree.rb_node->rb_left || + bfqd->group_weights_tree.rb_node->rb_right) +#endif + ); +} + +/* + * The following function returns true if every queue must receive the + * same share of the throughput (this condition is used when deciding + * whether idling may be disabled, see the comments in the function + * bfq_better_to_idle()). + * + * Such a scenario occurs when: + * 1) all active queues have the same weight, + * 2) all active groups at the same level in the groups tree have the same + * weight, + * 3) all active groups at the same level in the groups tree have the same + * number of children. + * + * Unfortunately, keeping the necessary state for evaluating exactly the + * above symmetry conditions would be quite complex and time-consuming. + * Therefore this function evaluates, instead, the following stronger + * sub-conditions, for which it is much easier to maintain the needed + * state: + * 1) all active queues have the same weight, + * 2) all active groups have the same weight, + * 3) all active groups have at most one active child each. + * In particular, the last two conditions are always true if hierarchical + * support and the cgroups interface are not enabled, thus no state needs + * to be maintained in this case. + */ +static bool bfq_symmetric_scenario(struct bfq_data *bfqd) +{ + return !bfq_differentiated_weights(bfqd); +} + +/* + * If the weight-counter tree passed as input contains no counter for + * the weight of the input entity, then add that counter; otherwise just + * increment the existing counter. + * + * Note that weight-counter trees contain few nodes in mostly symmetric + * scenarios. For example, if all queues have the same weight, then the + * weight-counter tree for the queues may contain at most one node. + * This holds even if low_latency is on, because weight-raised queues + * are not inserted in the tree. + * In most scenarios, the rate at which nodes are created/destroyed + * should be low too. + */ +static void bfq_weights_tree_add(struct bfq_data *bfqd, + struct bfq_entity *entity, + struct rb_root *root) +{ + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + struct rb_node **new = &(root->rb_node), *parent = NULL; + + /* + * Do not insert if the entity is already associated with a + * counter, which happens if: + * 1) the entity is associated with a queue, + * 2) a request arrival has caused the queue to become both + * non-weight-raised, and hence change its weight, and + * backlogged; in this respect, each of the two events + * causes an invocation of this function, + * 3) this is the invocation of this function caused by the + * second event. This second invocation is actually useless, + * and we handle this fact by exiting immediately. More + * efficient or clearer solutions might possibly be adopted. + */ + if (entity->weight_counter) + return; + + while (*new) { + struct bfq_weight_counter *__counter = container_of(*new, + struct bfq_weight_counter, + weights_node); + parent = *new; + + if (entity->weight == __counter->weight) { + entity->weight_counter = __counter; + goto inc_counter; + } + if (entity->weight < __counter->weight) + new = &((*new)->rb_left); + else + new = &((*new)->rb_right); + } + + entity->weight_counter = kzalloc(sizeof(struct bfq_weight_counter), + GFP_ATOMIC); + + /* + * In the unlucky event of an allocation failure, we just + * exit. This will cause the weight of entity to not be + * considered in bfq_differentiated_weights, which, in its + * turn, causes the scenario to be deemed wrongly symmetric in + * case entity's weight would have been the only weight making + * the scenario asymmetric. On the bright side, no unbalance + * will however occur when entity becomes inactive again (the + * invocation of this function is triggered by an activation + * of entity). In fact, bfq_weights_tree_remove does nothing + * if !entity->weight_counter. + */ + if (unlikely(!entity->weight_counter)) + return; + + entity->weight_counter->weight = entity->weight; + rb_link_node(&entity->weight_counter->weights_node, parent, new); + rb_insert_color(&entity->weight_counter->weights_node, root); + +inc_counter: + entity->weight_counter->num_active++; + + if (bfqq) { + bfq_log_bfqq(bfqq->bfqd, bfqq, "[%s] weight %d symmetric %d", + __func__, entity->weight, + bfq_symmetric_scenario(bfqd)); +#ifdef BFQ_GROUP_IOSCHED_ENABLED + } else { + struct bfq_group *bfqg = + container_of(entity, struct bfq_group, entity); + + bfq_log_bfqg((struct bfq_data *)bfqg->bfqd, bfqg, + "[%s] weight %d symmetric %d", + __func__, entity->weight, + bfq_symmetric_scenario(bfqd)); +#endif + } +} + +/* + * Decrement the weight counter associated with the entity, and, if the + * counter reaches 0, remove the counter from the tree. + * See the comments to the function bfq_weights_tree_add() for considerations + * about overhead. + */ +static void __bfq_weights_tree_remove(struct bfq_data *bfqd, + struct bfq_entity *entity, + struct rb_root *root) +{ + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + + if (!entity->weight_counter) + return; + + BUG_ON(RB_EMPTY_ROOT(root)); + BUG_ON(entity->weight_counter->weight != entity->weight); + + BUG_ON(!entity->weight_counter->num_active); + entity->weight_counter->num_active--; + + if (entity->weight_counter->num_active > 0) + goto reset_entity_pointer; + + rb_erase(&entity->weight_counter->weights_node, root); + kfree(entity->weight_counter); + +reset_entity_pointer: + entity->weight_counter = NULL; + if (bfqq) { + bfq_log_bfqq(bfqq->bfqd, bfqq, + "[%s] weight %d symmetric %d", + __func__, entity->weight, + bfq_symmetric_scenario(bfqd)); +#ifdef BFQ_GROUP_IOSCHED_ENABLED + } else { + struct bfq_group *bfqg = + container_of(entity, struct bfq_group, entity); + + bfq_log_bfqg(bfqd, bfqg, + "[%s] weight %d symmetric %d", + __func__, entity->weight, + bfq_symmetric_scenario(bfqd)); +#endif + } +} + +/* + * Invoke __bfq_weights_tree_remove on bfqq and all its inactive + * parent entities. + */ +static void bfq_weights_tree_remove(struct bfq_data *bfqd, + struct bfq_queue *bfqq) +{ + struct bfq_entity *entity = bfqq->entity.parent; + + __bfq_weights_tree_remove(bfqd, &bfqq->entity, + &bfqd->queue_weights_tree); + + for_each_entity(entity) { + struct bfq_sched_data *sd = entity->my_sched_data; + + BUG_ON(entity->sched_data == NULL); /* + * It would mean + * that this is + * the root group. + */ + + if (sd->next_in_service || sd->in_service_entity) { + /* + * entity is still active, because either + * next_in_service or in_service_entity is not + * NULL (see the comments on the definition of + * next_in_service for details on why + * in_service_entity must be checked too). + * + * As a consequence, the weight of entity is + * not to be removed. In addition, if entity + * is active, then its parent entities are + * active as well, and thus their weights are + * not to be removed either. In the end, this + * loop must stop here. + */ + break; + } + __bfq_weights_tree_remove(bfqd, entity, + &bfqd->group_weights_tree); + } +} + +/* + * Return expired entry, or NULL to just start from scratch in rbtree. + */ +static struct request *bfq_check_fifo(struct bfq_queue *bfqq, + struct request *last) +{ + struct request *rq; + + if (bfq_bfqq_fifo_expire(bfqq)) + return NULL; + + bfq_mark_bfqq_fifo_expire(bfqq); + + rq = rq_entry_fifo(bfqq->fifo.next); + + if (rq == last || ktime_get_ns() < rq->fifo_time) + return NULL; + + bfq_log_bfqq(bfqq->bfqd, bfqq, "returned %p", rq); + BUG_ON(RB_EMPTY_NODE(&rq->rb_node)); + return rq; +} + +static struct request *bfq_find_next_rq(struct bfq_data *bfqd, + struct bfq_queue *bfqq, + struct request *last) +{ + struct rb_node *rbnext = rb_next(&last->rb_node); + struct rb_node *rbprev = rb_prev(&last->rb_node); + struct request *next, *prev = NULL; + + BUG_ON(list_empty(&bfqq->fifo)); + + /* Follow expired path, else get first next available. */ + next = bfq_check_fifo(bfqq, last); + if (next) { + BUG_ON(next == last); + return next; + } + + BUG_ON(RB_EMPTY_NODE(&last->rb_node)); + + if (rbprev) + prev = rb_entry_rq(rbprev); + + if (rbnext) + next = rb_entry_rq(rbnext); + else { + rbnext = rb_first(&bfqq->sort_list); + if (rbnext && rbnext != &last->rb_node) + next = rb_entry_rq(rbnext); + } + + return bfq_choose_req(bfqd, next, prev, blk_rq_pos(last)); +} + +/* see the definition of bfq_async_charge_factor for details */ +static unsigned long bfq_serv_to_charge(struct request *rq, + struct bfq_queue *bfqq) +{ + if (bfq_bfqq_sync(bfqq) || bfqq->wr_coeff > 1) + return blk_rq_sectors(rq); + + return blk_rq_sectors(rq) * bfq_async_charge_factor; +} + +/** + * bfq_updated_next_req - update the queue after a new next_rq selection. + * @bfqd: the device data the queue belongs to. + * @bfqq: the queue to update. + * + * If the first request of a queue changes we make sure that the queue + * has enough budget to serve at least its first request (if the + * request has grown). We do this because if the queue has not enough + * budget for its first request, it has to go through two dispatch + * rounds to actually get it dispatched. + */ +static void bfq_updated_next_req(struct bfq_data *bfqd, + struct bfq_queue *bfqq) +{ + struct bfq_entity *entity = &bfqq->entity; + struct bfq_service_tree *st = bfq_entity_service_tree(entity); + struct request *next_rq = bfqq->next_rq; + unsigned long new_budget; + + if (!next_rq) + return; + + if (bfqq == bfqd->in_service_queue) + /* + * In order not to break guarantees, budgets cannot be + * changed after an entity has been selected. + */ + return; + + BUG_ON(entity->tree != &st->active); + BUG_ON(entity == entity->sched_data->in_service_entity); + + new_budget = max_t(unsigned long, bfqq->max_budget, + bfq_serv_to_charge(next_rq, bfqq)); + if (entity->budget != new_budget) { + entity->budget = new_budget; + bfq_log_bfqq(bfqd, bfqq, "new budget %lu", + new_budget); + bfq_requeue_bfqq(bfqd, bfqq, false); + } +} + +static unsigned int bfq_wr_duration(struct bfq_data *bfqd) +{ + u64 dur; + + if (bfqd->bfq_wr_max_time > 0) + return bfqd->bfq_wr_max_time; + + dur = bfqd->rate_dur_prod; + do_div(dur, bfqd->peak_rate); + + /* + * Limit duration between 3 and 25 seconds. The upper limit + * has been conservatively set after the following worst case: + * on a QEMU/KVM virtual machine + * - running in a slow PC + * - with a virtual disk stacked on a slow low-end 5400rpm HDD + * - serving a heavy I/O workload, such as the sequential reading + * of several files + * mplayer took 23 seconds to start, if constantly weight-raised. + * + * As for higher values than that accomodating the above bad + * scenario, tests show that higher values would often yield + * the opposite of the desired result, i.e., would worsen + * responsiveness by allowing non-interactive applications to + * preserve weight raising for too long. + * + * On the other end, lower values than 3 seconds make it + * difficult for most interactive tasks to complete their jobs + * before weight-raising finishes. + */ + return clamp_val(dur, msecs_to_jiffies(3000), msecs_to_jiffies(25000)); +} + +/* switch back from soft real-time to interactive weight raising */ +static void switch_back_to_interactive_wr(struct bfq_queue *bfqq, + struct bfq_data *bfqd) +{ + bfqq->wr_coeff = bfqd->bfq_wr_coeff; + bfqq->wr_cur_max_time = bfq_wr_duration(bfqd); + bfqq->last_wr_start_finish = bfqq->wr_start_at_switch_to_srt; +} + +static void +bfq_bfqq_resume_state(struct bfq_queue *bfqq, struct bfq_data *bfqd, + struct bfq_io_cq *bic, bool bfq_already_existing) +{ + unsigned int old_wr_coeff; + bool busy = bfq_already_existing && bfq_bfqq_busy(bfqq); + + if (bic->saved_has_short_ttime) + bfq_mark_bfqq_has_short_ttime(bfqq); + else + bfq_clear_bfqq_has_short_ttime(bfqq); + + if (bic->saved_IO_bound) + bfq_mark_bfqq_IO_bound(bfqq); + else + bfq_clear_bfqq_IO_bound(bfqq); + + if (unlikely(busy)) + old_wr_coeff = bfqq->wr_coeff; + + bfqq->ttime = bic->saved_ttime; + bfqq->wr_coeff = bic->saved_wr_coeff; + bfqq->wr_start_at_switch_to_srt = bic->saved_wr_start_at_switch_to_srt; + BUG_ON(time_is_after_jiffies(bfqq->wr_start_at_switch_to_srt)); + bfqq->last_wr_start_finish = bic->saved_last_wr_start_finish; + bfqq->wr_cur_max_time = bic->saved_wr_cur_max_time; + BUG_ON(time_is_after_jiffies(bfqq->last_wr_start_finish)); + + bfq_log_bfqq(bfqq->bfqd, bfqq, + "bic %p wr_coeff %d start_finish %lu max_time %lu", + bic, bfqq->wr_coeff, bfqq->last_wr_start_finish, + bfqq->wr_cur_max_time); + + if (bfqq->wr_coeff > 1 && (bfq_bfqq_in_large_burst(bfqq) || + time_is_before_jiffies(bfqq->last_wr_start_finish + + bfqq->wr_cur_max_time))) { + if (bfqq->wr_cur_max_time == bfqd->bfq_wr_rt_max_time && + !bfq_bfqq_in_large_burst(bfqq) && + time_is_after_eq_jiffies(bfqq->wr_start_at_switch_to_srt + + bfq_wr_duration(bfqd))) { + switch_back_to_interactive_wr(bfqq, bfqd); + bfq_log_bfqq(bfqq->bfqd, bfqq, + "switching back to interactive"); + } else { + bfqq->wr_coeff = 1; + bfq_log_bfqq(bfqq->bfqd, bfqq, + "switching off wr (%lu + %lu < %lu)", + bfqq->last_wr_start_finish, bfqq->wr_cur_max_time, + jiffies); + } + } + + /* make sure weight will be updated, however we got here */ + bfqq->entity.prio_changed = 1; + + if (likely(!busy)) + return; + + if (old_wr_coeff == 1 && bfqq->wr_coeff > 1) { + bfqd->wr_busy_queues++; + BUG_ON(bfqd->wr_busy_queues > bfqd->busy_queues); + } else if (old_wr_coeff > 1 && bfqq->wr_coeff == 1) { + bfqd->wr_busy_queues--; + BUG_ON(bfqd->wr_busy_queues < 0); + } +} + +static int bfqq_process_refs(struct bfq_queue *bfqq) +{ + int process_refs, io_refs; + + lockdep_assert_held(&bfqq->bfqd->lock); + + io_refs = bfqq->allocated; + process_refs = bfqq->ref - io_refs - bfqq->entity.on_st; + BUG_ON(process_refs < 0); + return process_refs; +} + +/* Empty burst list and add just bfqq (see comments to bfq_handle_burst) */ +static void bfq_reset_burst_list(struct bfq_data *bfqd, struct bfq_queue *bfqq) +{ + struct bfq_queue *item; + struct hlist_node *n; + + hlist_for_each_entry_safe(item, n, &bfqd->burst_list, burst_list_node) + hlist_del_init(&item->burst_list_node); + hlist_add_head(&bfqq->burst_list_node, &bfqd->burst_list); + bfqd->burst_size = 1; + bfqd->burst_parent_entity = bfqq->entity.parent; +} + +/* Add bfqq to the list of queues in current burst (see bfq_handle_burst) */ +static void bfq_add_to_burst(struct bfq_data *bfqd, struct bfq_queue *bfqq) +{ + /* Increment burst size to take into account also bfqq */ + bfqd->burst_size++; + + bfq_log_bfqq(bfqd, bfqq, "%d", bfqd->burst_size); + + BUG_ON(bfqd->burst_size > bfqd->bfq_large_burst_thresh); + + if (bfqd->burst_size == bfqd->bfq_large_burst_thresh) { + struct bfq_queue *pos, *bfqq_item; + struct hlist_node *n; + + /* + * Enough queues have been activated shortly after each + * other to consider this burst as large. + */ + bfqd->large_burst = true; + bfq_log_bfqq(bfqd, bfqq, "large burst started"); + + /* + * We can now mark all queues in the burst list as + * belonging to a large burst. + */ + hlist_for_each_entry(bfqq_item, &bfqd->burst_list, + burst_list_node) { + bfq_mark_bfqq_in_large_burst(bfqq_item); + bfq_log_bfqq(bfqd, bfqq_item, "marked in large burst"); + } + bfq_mark_bfqq_in_large_burst(bfqq); + bfq_log_bfqq(bfqd, bfqq, "marked in large burst"); + + /* + * From now on, and until the current burst finishes, any + * new queue being activated shortly after the last queue + * was inserted in the burst can be immediately marked as + * belonging to a large burst. So the burst list is not + * needed any more. Remove it. + */ + hlist_for_each_entry_safe(pos, n, &bfqd->burst_list, + burst_list_node) + hlist_del_init(&pos->burst_list_node); + } else /* + * Burst not yet large: add bfqq to the burst list. Do + * not increment the ref counter for bfqq, because bfqq + * is removed from the burst list before freeing bfqq + * in put_queue. + */ + hlist_add_head(&bfqq->burst_list_node, &bfqd->burst_list); +} + +/* + * If many queues belonging to the same group happen to be created + * shortly after each other, then the processes associated with these + * queues have typically a common goal. In particular, bursts of queue + * creations are usually caused by services or applications that spawn + * many parallel threads/processes. Examples are systemd during boot, + * or git grep. To help these processes get their job done as soon as + * possible, it is usually better to not grant either weight-raising + * or device idling to their queues. + * + * In this comment we describe, firstly, the reasons why this fact + * holds, and, secondly, the next function, which implements the main + * steps needed to properly mark these queues so that they can then be + * treated in a different way. + * + * The above services or applications benefit mostly from a high + * throughput: the quicker the requests of the activated queues are + * cumulatively served, the sooner the target job of these queues gets + * completed. As a consequence, weight-raising any of these queues, + * which also implies idling the device for it, is almost always + * counterproductive. In most cases it just lowers throughput. + * + * On the other hand, a burst of queue creations may be caused also by + * the start of an application that does not consist of a lot of + * parallel I/O-bound threads. In fact, with a complex application, + * several short processes may need to be executed to start-up the + * application. In this respect, to start an application as quickly as + * possible, the best thing to do is in any case to privilege the I/O + * related to the application with respect to all other + * I/O. Therefore, the best strategy to start as quickly as possible + * an application that causes a burst of queue creations is to + * weight-raise all the queues created during the burst. This is the + * exact opposite of the best strategy for the other type of bursts. + * + * In the end, to take the best action for each of the two cases, the + * two types of bursts need to be distinguished. Fortunately, this + * seems relatively easy, by looking at the sizes of the bursts. In + * particular, we found a threshold such that only bursts with a + * larger size than that threshold are apparently caused by + * services or commands such as systemd or git grep. For brevity, + * hereafter we call just 'large' these bursts. BFQ *does not* + * weight-raise queues whose creation occurs in a large burst. In + * addition, for each of these queues BFQ performs or does not perform + * idling depending on which choice boosts the throughput more. The + * exact choice depends on the device and request pattern at + * hand. + * + * Unfortunately, false positives may occur while an interactive task + * is starting (e.g., an application is being started). The + * consequence is that the queues associated with the task do not + * enjoy weight raising as expected. Fortunately these false positives + * are very rare. They typically occur if some service happens to + * start doing I/O exactly when the interactive task starts. + * + * Turning back to the next function, it implements all the steps + * needed to detect the occurrence of a large burst and to properly + * mark all the queues belonging to it (so that they can then be + * treated in a different way). This goal is achieved by maintaining a + * "burst list" that holds, temporarily, the queues that belong to the + * burst in progress. The list is then used to mark these queues as + * belonging to a large burst if the burst does become large. The main + * steps are the following. + * + * . when the very first queue is created, the queue is inserted into the + * list (as it could be the first queue in a possible burst) + * + * . if the current burst has not yet become large, and a queue Q that does + * not yet belong to the burst is activated shortly after the last time + * at which a new queue entered the burst list, then the function appends + * Q to the burst list + * + * . if, as a consequence of the previous step, the burst size reaches + * the large-burst threshold, then + * + * . all the queues in the burst list are marked as belonging to a + * large burst + * + * . the burst list is deleted; in fact, the burst list already served + * its purpose (keeping temporarily track of the queues in a burst, + * so as to be able to mark them as belonging to a large burst in the + * previous sub-step), and now is not needed any more + * + * . the device enters a large-burst mode + * + * . if a queue Q that does not belong to the burst is created while + * the device is in large-burst mode and shortly after the last time + * at which a queue either entered the burst list or was marked as + * belonging to the current large burst, then Q is immediately marked + * as belonging to a large burst. + * + * . if a queue Q that does not belong to the burst is created a while + * later, i.e., not shortly after, than the last time at which a queue + * either entered the burst list or was marked as belonging to the + * current large burst, then the current burst is deemed as finished and: + * + * . the large-burst mode is reset if set + * + * . the burst list is emptied + * + * . Q is inserted in the burst list, as Q may be the first queue + * in a possible new burst (then the burst list contains just Q + * after this step). + */ +static void bfq_handle_burst(struct bfq_data *bfqd, struct bfq_queue *bfqq) +{ + /* + * If bfqq is already in the burst list or is part of a large + * burst, or finally has just been split, then there is + * nothing else to do. + */ + if (!hlist_unhashed(&bfqq->burst_list_node) || + bfq_bfqq_in_large_burst(bfqq) || + time_is_after_eq_jiffies(bfqq->split_time + + msecs_to_jiffies(10))) + return; + + /* + * If bfqq's creation happens late enough, or bfqq belongs to + * a different group than the burst group, then the current + * burst is finished, and related data structures must be + * reset. + * + * In this respect, consider the special case where bfqq is + * the very first queue created after BFQ is selected for this + * device. In this case, last_ins_in_burst and + * burst_parent_entity are not yet significant when we get + * here. But it is easy to verify that, whether or not the + * following condition is true, bfqq will end up being + * inserted into the burst list. In particular the list will + * happen to contain only bfqq. And this is exactly what has + * to happen, as bfqq may be the first queue of the first + * burst. + */ + if (time_is_before_jiffies(bfqd->last_ins_in_burst + + bfqd->bfq_burst_interval) || + bfqq->entity.parent != bfqd->burst_parent_entity) { + bfqd->large_burst = false; + bfq_reset_burst_list(bfqd, bfqq); + bfq_log_bfqq(bfqd, bfqq, + "late activation or different group"); + goto end; + } + + /* + * If we get here, then bfqq is being activated shortly after the + * last queue. So, if the current burst is also large, we can mark + * bfqq as belonging to this large burst immediately. + */ + if (bfqd->large_burst) { + bfq_log_bfqq(bfqd, bfqq, "marked in burst"); + bfq_mark_bfqq_in_large_burst(bfqq); + goto end; + } + + /* + * If we get here, then a large-burst state has not yet been + * reached, but bfqq is being activated shortly after the last + * queue. Then we add bfqq to the burst. + */ + bfq_add_to_burst(bfqd, bfqq); +end: + /* + * At this point, bfqq either has been added to the current + * burst or has caused the current burst to terminate and a + * possible new burst to start. In particular, in the second + * case, bfqq has become the first queue in the possible new + * burst. In both cases last_ins_in_burst needs to be moved + * forward. + */ + bfqd->last_ins_in_burst = jiffies; + +} + +static int bfq_bfqq_budget_left(struct bfq_queue *bfqq) +{ + struct bfq_entity *entity = &bfqq->entity; + + if (entity->budget < entity->service) { + pr_crit("budget %d service %d\n", + entity->budget, entity->service); + BUG(); + } + return entity->budget - entity->service; +} + +/* + * If enough samples have been computed, return the current max budget + * stored in bfqd, which is dynamically updated according to the + * estimated disk peak rate; otherwise return the default max budget + */ +static int bfq_max_budget(struct bfq_data *bfqd) +{ + if (bfqd->budgets_assigned < bfq_stats_min_budgets) + return bfq_default_max_budget; + else + return bfqd->bfq_max_budget; +} + +/* + * Return min budget, which is a fraction of the current or default + * max budget (trying with 1/32) + */ +static int bfq_min_budget(struct bfq_data *bfqd) +{ + if (bfqd->budgets_assigned < bfq_stats_min_budgets) + return bfq_default_max_budget / 32; + else + return bfqd->bfq_max_budget / 32; +} + +static void bfq_bfqq_expire(struct bfq_data *bfqd, + struct bfq_queue *bfqq, + bool compensate, + enum bfqq_expiration reason); + +/* + * The next function, invoked after the input queue bfqq switches from + * idle to busy, updates the budget of bfqq. The function also tells + * whether the in-service queue should be expired, by returning + * true. The purpose of expiring the in-service queue is to give bfqq + * the chance to possibly preempt the in-service queue, and the reason + * for preempting the in-service queue is to achieve one of the two + * goals below. + * + * 1. Guarantee to bfqq its reserved bandwidth even if bfqq has + * expired because it has remained idle. In particular, bfqq may have + * expired for one of the following two reasons: + * + * - BFQ_BFQQ_NO_MORE_REQUEST bfqq did not enjoy any device idling and + * did not make it to issue a new request before its last request + * was served; + * + * - BFQ_BFQQ_TOO_IDLE bfqq did enjoy device idling, but did not issue + * a new request before the expiration of the idling-time. + * + * Even if bfqq has expired for one of the above reasons, the process + * associated with the queue may be however issuing requests greedily, + * and thus be sensitive to the bandwidth it receives (bfqq may have + * remained idle for other reasons: CPU high load, bfqq not enjoying + * idling, I/O throttling somewhere in the path from the process to + * the I/O scheduler, ...). But if, after every expiration for one of + * the above two reasons, bfqq has to wait for the service of at least + * one full budget of another queue before being served again, then + * bfqq is likely to get a much lower bandwidth or resource time than + * its reserved ones. To address this issue, two countermeasures need + * to be taken. + * + * First, the budget and the timestamps of bfqq need to be updated in + * a special way on bfqq reactivation: they need to be updated as if + * bfqq did not remain idle and did not expire. In fact, if they are + * computed as if bfqq expired and remained idle until reactivation, + * then the process associated with bfqq is treated as if, instead of + * being greedy, it stopped issuing requests when bfqq remained idle, + * and restarts issuing requests only on this reactivation. In other + * words, the scheduler does not help the process recover the "service + * hole" between bfqq expiration and reactivation. As a consequence, + * the process receives a lower bandwidth than its reserved one. In + * contrast, to recover this hole, the budget must be updated as if + * bfqq was not expired at all before this reactivation, i.e., it must + * be set to the value of the remaining budget when bfqq was + * expired. Along the same line, timestamps need to be assigned the + * value they had the last time bfqq was selected for service, i.e., + * before last expiration. Thus timestamps need to be back-shifted + * with respect to their normal computation (see [1] for more details + * on this tricky aspect). + * + * Secondly, to allow the process to recover the hole, the in-service + * queue must be expired too, to give bfqq the chance to preempt it + * immediately. In fact, if bfqq has to wait for a full budget of the + * in-service queue to be completed, then it may become impossible to + * let the process recover the hole, even if the back-shifted + * timestamps of bfqq are lower than those of the in-service queue. If + * this happens for most or all of the holes, then the process may not + * receive its reserved bandwidth. In this respect, it is worth noting + * that, being the service of outstanding requests unpreemptible, a + * little fraction of the holes may however be unrecoverable, thereby + * causing a little loss of bandwidth. + * + * The last important point is detecting whether bfqq does need this + * bandwidth recovery. In this respect, the next function deems the + * process associated with bfqq greedy, and thus allows it to recover + * the hole, if: 1) the process is waiting for the arrival of a new + * request (which implies that bfqq expired for one of the above two + * reasons), and 2) such a request has arrived soon. The first + * condition is controlled through the flag non_blocking_wait_rq, + * while the second through the flag arrived_in_time. If both + * conditions hold, then the function computes the budget in the + * above-described special way, and signals that the in-service queue + * should be expired. Timestamp back-shifting is done later in + * __bfq_activate_entity. + * + * 2. Reduce latency. Even if timestamps are not backshifted to let + * the process associated with bfqq recover a service hole, bfqq may + * however happen to have, after being (re)activated, a lower finish + * timestamp than the in-service queue. That is, the next budget of + * bfqq may have to be completed before the one of the in-service + * queue. If this is the case, then preempting the in-service queue + * allows this goal to be achieved, apart from the unpreemptible, + * outstanding requests mentioned above. + * + * Unfortunately, regardless of which of the above two goals one wants + * to achieve, service trees need first to be updated to know whether + * the in-service queue must be preempted. To have service trees + * correctly updated, the in-service queue must be expired and + * rescheduled, and bfqq must be scheduled too. This is one of the + * most costly operations (in future versions, the scheduling + * mechanism may be re-designed in such a way to make it possible to + * know whether preemption is needed without needing to update service + * trees). In addition, queue preemptions almost always cause random + * I/O, and thus loss of throughput. Because of these facts, the next + * function adopts the following simple scheme to avoid both costly + * operations and too frequent preemptions: it requests the expiration + * of the in-service queue (unconditionally) only for queues that need + * to recover a hole, or that either are weight-raised or deserve to + * be weight-raised. + */ +static bool bfq_bfqq_update_budg_for_activation(struct bfq_data *bfqd, + struct bfq_queue *bfqq, + bool arrived_in_time, + bool wr_or_deserves_wr) +{ + struct bfq_entity *entity = &bfqq->entity; + + if (bfq_bfqq_non_blocking_wait_rq(bfqq) && arrived_in_time) { + /* + * We do not clear the flag non_blocking_wait_rq here, as + * the latter is used in bfq_activate_bfqq to signal + * that timestamps need to be back-shifted (and is + * cleared right after). + */ + + /* + * In next assignment we rely on that either + * entity->service or entity->budget are not updated + * on expiration if bfqq is empty (see + * __bfq_bfqq_recalc_budget). Thus both quantities + * remain unchanged after such an expiration, and the + * following statement therefore assigns to + * entity->budget the remaining budget on such an + * expiration. + */ + BUG_ON(bfqq->max_budget < 0); + entity->budget = min_t(unsigned long, + bfq_bfqq_budget_left(bfqq), + bfqq->max_budget); + + BUG_ON(entity->budget < 0); + + /* + * At this point, we have used entity->service to get + * the budget left (needed for updating + * entity->budget). Thus we finally can, and have to, + * reset entity->service. The latter must be reset + * because bfqq would otherwise be charged again for + * the service it has received during its previous + * service slot(s). + */ + entity->service = 0; + + return true; + } + + /* + * We can finally complete expiration, by setting service to 0. + */ + entity->service = 0; + BUG_ON(bfqq->max_budget < 0); + entity->budget = max_t(unsigned long, bfqq->max_budget, + bfq_serv_to_charge(bfqq->next_rq, bfqq)); + BUG_ON(entity->budget < 0); + + bfq_clear_bfqq_non_blocking_wait_rq(bfqq); + return wr_or_deserves_wr; +} + +/* + * Return the farthest past time instant according to jiffies + * macros. + */ +static unsigned long bfq_smallest_from_now(void) +{ + return jiffies - MAX_JIFFY_OFFSET; +} + +static void bfq_update_bfqq_wr_on_rq_arrival(struct bfq_data *bfqd, + struct bfq_queue *bfqq, + unsigned int old_wr_coeff, + bool wr_or_deserves_wr, + bool interactive, + bool in_burst, + bool soft_rt) +{ + if (old_wr_coeff == 1 && wr_or_deserves_wr) { + /* start a weight-raising period */ + if (interactive) { + bfqq->service_from_wr = 0; + bfqq->wr_coeff = bfqd->bfq_wr_coeff; + bfqq->wr_cur_max_time = bfq_wr_duration(bfqd); + } else { + /* + * No interactive weight raising in progress + * here: assign minus infinity to + * wr_start_at_switch_to_srt, to make sure + * that, at the end of the soft-real-time + * weight raising periods that is starting + * now, no interactive weight-raising period + * may be wrongly considered as still in + * progress (and thus actually started by + * mistake). + */ + bfqq->wr_start_at_switch_to_srt = + bfq_smallest_from_now(); + bfqq->wr_coeff = bfqd->bfq_wr_coeff * + BFQ_SOFTRT_WEIGHT_FACTOR; + bfqq->wr_cur_max_time = + bfqd->bfq_wr_rt_max_time; + } + /* + * If needed, further reduce budget to make sure it is + * close to bfqq's backlog, so as to reduce the + * scheduling-error component due to a too large + * budget. Do not care about throughput consequences, + * but only about latency. Finally, do not assign a + * too small budget either, to avoid increasing + * latency by causing too frequent expirations. + */ + bfqq->entity.budget = min_t(unsigned long, + bfqq->entity.budget, + 2 * bfq_min_budget(bfqd)); + + bfq_log_bfqq(bfqd, bfqq, + "wrais starting at %lu, rais_max_time %u", + jiffies, + jiffies_to_msecs(bfqq->wr_cur_max_time)); + } else if (old_wr_coeff > 1) { + if (interactive) { /* update wr coeff and duration */ + bfqq->wr_coeff = bfqd->bfq_wr_coeff; + bfqq->wr_cur_max_time = bfq_wr_duration(bfqd); + } else if (in_burst) { + bfqq->wr_coeff = 1; + bfq_log_bfqq(bfqd, bfqq, + "wrais ending at %lu, rais_max_time %u", + jiffies, + jiffies_to_msecs(bfqq-> + wr_cur_max_time)); + } else if (soft_rt) { + /* + * The application is now or still meeting the + * requirements for being deemed soft rt. We + * can then correctly and safely (re)charge + * the weight-raising duration for the + * application with the weight-raising + * duration for soft rt applications. + * + * In particular, doing this recharge now, i.e., + * before the weight-raising period for the + * application finishes, reduces the probability + * of the following negative scenario: + * 1) the weight of a soft rt application is + * raised at startup (as for any newly + * created application), + * 2) since the application is not interactive, + * at a certain time weight-raising is + * stopped for the application, + * 3) at that time the application happens to + * still have pending requests, and hence + * is destined to not have a chance to be + * deemed soft rt before these requests are + * completed (see the comments to the + * function bfq_bfqq_softrt_next_start() + * for details on soft rt detection), + * 4) these pending requests experience a high + * latency because the application is not + * weight-raised while they are pending. + */ + if (bfqq->wr_cur_max_time != + bfqd->bfq_wr_rt_max_time) { + bfqq->wr_start_at_switch_to_srt = + bfqq->last_wr_start_finish; + BUG_ON(time_is_after_jiffies(bfqq->last_wr_start_finish)); + + bfqq->wr_cur_max_time = + bfqd->bfq_wr_rt_max_time; + bfqq->wr_coeff = bfqd->bfq_wr_coeff * + BFQ_SOFTRT_WEIGHT_FACTOR; + bfq_log_bfqq(bfqd, bfqq, + "switching to soft_rt wr"); + } else + bfq_log_bfqq(bfqd, bfqq, + "moving forward soft_rt wr duration"); + bfqq->last_wr_start_finish = jiffies; + } + } +} + +static bool bfq_bfqq_idle_for_long_time(struct bfq_data *bfqd, + struct bfq_queue *bfqq) +{ + return bfqq->dispatched == 0 && + time_is_before_jiffies( + bfqq->budget_timeout + + bfqd->bfq_wr_min_idle_time); +} + +static void bfq_bfqq_handle_idle_busy_switch(struct bfq_data *bfqd, + struct bfq_queue *bfqq, + int old_wr_coeff, + struct request *rq, + bool *interactive) +{ + bool soft_rt, in_burst, wr_or_deserves_wr, + bfqq_wants_to_preempt, + idle_for_long_time = bfq_bfqq_idle_for_long_time(bfqd, bfqq), + /* + * See the comments on + * bfq_bfqq_update_budg_for_activation for + * details on the usage of the next variable. + */ + arrived_in_time = ktime_get_ns() <= + bfqq->ttime.last_end_request + + bfqd->bfq_slice_idle * 3; + + bfq_log_bfqq(bfqd, bfqq, + "bfq_add_request non-busy: " + "jiffies %lu, in_time %d, idle_long %d busyw %d " + "wr_coeff %u", + jiffies, arrived_in_time, + idle_for_long_time, + bfq_bfqq_non_blocking_wait_rq(bfqq), + old_wr_coeff); + + BUG_ON(bfqq->entity.budget < bfqq->entity.service); + + BUG_ON(bfqq == bfqd->in_service_queue); + + /* + * bfqq deserves to be weight-raised if: + * - it is sync, + * - it does not belong to a large burst, + * - it has been idle for enough time or is soft real-time, + * - is linked to a bfq_io_cq (it is not shared in any sense) + */ + in_burst = bfq_bfqq_in_large_burst(bfqq); + soft_rt = bfqd->bfq_wr_max_softrt_rate > 0 && + !in_burst && + time_is_before_jiffies(bfqq->soft_rt_next_start) && + bfqq->dispatched == 0; + *interactive = + !in_burst && + idle_for_long_time; + wr_or_deserves_wr = bfqd->low_latency && + (bfqq->wr_coeff > 1 || + (bfq_bfqq_sync(bfqq) && + bfqq->bic && (*interactive || soft_rt))); + + bfq_log_bfqq(bfqd, bfqq, + "bfq_add_request: " + "in_burst %d, " + "soft_rt %d (next %lu), inter %d, bic %p", + bfq_bfqq_in_large_burst(bfqq), soft_rt, + bfqq->soft_rt_next_start, + *interactive, + bfqq->bic); + + /* + * Using the last flag, update budget and check whether bfqq + * may want to preempt the in-service queue. + */ + bfqq_wants_to_preempt = + bfq_bfqq_update_budg_for_activation(bfqd, bfqq, + arrived_in_time, + wr_or_deserves_wr); + + /* + * If bfqq happened to be activated in a burst, but has been + * idle for much more than an interactive queue, then we + * assume that, in the overall I/O initiated in the burst, the + * I/O associated with bfqq is finished. So bfqq does not need + * to be treated as a queue belonging to a burst + * anymore. Accordingly, we reset bfqq's in_large_burst flag + * if set, and remove bfqq from the burst list if it's + * there. We do not decrement burst_size, because the fact + * that bfqq does not need to belong to the burst list any + * more does not invalidate the fact that bfqq was created in + * a burst. + */ + if (likely(!bfq_bfqq_just_created(bfqq)) && + idle_for_long_time && + time_is_before_jiffies( + bfqq->budget_timeout + + msecs_to_jiffies(10000))) { + hlist_del_init(&bfqq->burst_list_node); + bfq_clear_bfqq_in_large_burst(bfqq); + } + + bfq_clear_bfqq_just_created(bfqq); + + if (!bfq_bfqq_IO_bound(bfqq)) { + if (arrived_in_time) { + bfqq->requests_within_timer++; + if (bfqq->requests_within_timer >= + bfqd->bfq_requests_within_timer) + bfq_mark_bfqq_IO_bound(bfqq); + } else + bfqq->requests_within_timer = 0; + bfq_log_bfqq(bfqd, bfqq, "requests in time %d", + bfqq->requests_within_timer); + } + + if (bfqd->low_latency) { + if (unlikely(time_is_after_jiffies(bfqq->split_time))) + /* wraparound */ + bfqq->split_time = + jiffies - bfqd->bfq_wr_min_idle_time - 1; + + if (time_is_before_jiffies(bfqq->split_time + + bfqd->bfq_wr_min_idle_time)) { + bfq_update_bfqq_wr_on_rq_arrival(bfqd, bfqq, + old_wr_coeff, + wr_or_deserves_wr, + *interactive, + in_burst, + soft_rt); + + if (old_wr_coeff != bfqq->wr_coeff) + bfqq->entity.prio_changed = 1; + } + } + + bfqq->last_idle_bklogged = jiffies; + bfqq->service_from_backlogged = 0; + bfq_clear_bfqq_softrt_update(bfqq); + + bfq_add_bfqq_busy(bfqd, bfqq); + + /* + * Expire in-service queue only if preemption may be needed + * for guarantees. In this respect, the function + * next_queue_may_preempt just checks a simple, necessary + * condition, and not a sufficient condition based on + * timestamps. In fact, for the latter condition to be + * evaluated, timestamps would need first to be updated, and + * this operation is quite costly (see the comments on the + * function bfq_bfqq_update_budg_for_activation). + */ + if (bfqd->in_service_queue && bfqq_wants_to_preempt && + bfqd->in_service_queue->wr_coeff < bfqq->wr_coeff && + next_queue_may_preempt(bfqd)) { + struct bfq_queue *in_serv = + bfqd->in_service_queue; + BUG_ON(in_serv == bfqq); + + bfq_bfqq_expire(bfqd, bfqd->in_service_queue, + false, BFQ_BFQQ_PREEMPTED); + } +} + +static void bfq_add_request(struct request *rq) +{ + struct bfq_queue *bfqq = RQ_BFQQ(rq); + struct bfq_data *bfqd = bfqq->bfqd; + struct request *next_rq, *prev; + unsigned int old_wr_coeff = bfqq->wr_coeff; + bool interactive = false; + + bfq_log_bfqq(bfqd, bfqq, "size %u %s", + blk_rq_sectors(rq), rq_is_sync(rq) ? "S" : "A"); + + if (bfqq->wr_coeff > 1) /* queue is being weight-raised */ + bfq_log_bfqq(bfqd, bfqq, + "raising period dur %u/%u msec, old coeff %u, w %d(%d)", + jiffies_to_msecs(jiffies - bfqq->last_wr_start_finish), + jiffies_to_msecs(bfqq->wr_cur_max_time), + bfqq->wr_coeff, + bfqq->entity.weight, bfqq->entity.orig_weight); + + bfqq->queued[rq_is_sync(rq)]++; + bfqd->queued++; + + BUG_ON(!RQ_BFQQ(rq)); + BUG_ON(RQ_BFQQ(rq) != bfqq); + WARN_ON(blk_rq_sectors(rq) == 0); + + elv_rb_add(&bfqq->sort_list, rq); + + /* + * Check if this request is a better next-to-serve candidate. + */ + prev = bfqq->next_rq; + next_rq = bfq_choose_req(bfqd, bfqq->next_rq, rq, bfqd->last_position); + BUG_ON(!next_rq); + BUG_ON(!RQ_BFQQ(next_rq)); + BUG_ON(RQ_BFQQ(next_rq) != bfqq); + bfqq->next_rq = next_rq; + + /* + * Adjust priority tree position, if next_rq changes. + */ + if (prev != bfqq->next_rq) + bfq_pos_tree_add_move(bfqd, bfqq); + + if (!bfq_bfqq_busy(bfqq)) /* switching to busy ... */ + bfq_bfqq_handle_idle_busy_switch(bfqd, bfqq, old_wr_coeff, + rq, &interactive); + else { + if (bfqd->low_latency && old_wr_coeff == 1 && !rq_is_sync(rq) && + time_is_before_jiffies( + bfqq->last_wr_start_finish + + bfqd->bfq_wr_min_inter_arr_async)) { + bfqq->wr_coeff = bfqd->bfq_wr_coeff; + bfqq->wr_cur_max_time = bfq_wr_duration(bfqd); + + bfqd->wr_busy_queues++; + BUG_ON(bfqd->wr_busy_queues > bfqd->busy_queues); + bfqq->entity.prio_changed = 1; + bfq_log_bfqq(bfqd, bfqq, + "non-idle wrais starting, " + "wr_max_time %u wr_busy %d", + jiffies_to_msecs(bfqq->wr_cur_max_time), + bfqd->wr_busy_queues); + } + if (prev != bfqq->next_rq) + bfq_updated_next_req(bfqd, bfqq); + } + + /* + * Assign jiffies to last_wr_start_finish in the following + * cases: + * + * . if bfqq is not going to be weight-raised, because, for + * non weight-raised queues, last_wr_start_finish stores the + * arrival time of the last request; as of now, this piece + * of information is used only for deciding whether to + * weight-raise async queues + * + * . if bfqq is not weight-raised, because, if bfqq is now + * switching to weight-raised, then last_wr_start_finish + * stores the time when weight-raising starts + * + * . if bfqq is interactive, because, regardless of whether + * bfqq is currently weight-raised, the weight-raising + * period must start or restart (this case is considered + * separately because it is not detected by the above + * conditions, if bfqq is already weight-raised) + * + * last_wr_start_finish has to be updated also if bfqq is soft + * real-time, because the weight-raising period is constantly + * restarted on idle-to-busy transitions for these queues, but + * this is already done in bfq_bfqq_handle_idle_busy_switch if + * needed. + */ + if (bfqd->low_latency && + (old_wr_coeff == 1 || bfqq->wr_coeff == 1 || interactive)) + bfqq->last_wr_start_finish = jiffies; +} + +static struct request *bfq_find_rq_fmerge(struct bfq_data *bfqd, + struct bio *bio, + struct request_queue *q) +{ + struct bfq_queue *bfqq = bfqd->bio_bfqq; + + BUG_ON(!bfqd->bio_bfqq_set); + + if (bfqq) + return elv_rb_find(&bfqq->sort_list, bio_end_sector(bio)); + + return NULL; +} + +static sector_t get_sdist(sector_t last_pos, struct request *rq) +{ + sector_t sdist = 0; + + if (last_pos) { + if (last_pos < blk_rq_pos(rq)) + sdist = blk_rq_pos(rq) - last_pos; + else + sdist = last_pos - blk_rq_pos(rq); + } + + return sdist; +} + +#if 0 /* Still not clear if we can do without next two functions */ +static void bfq_activate_request(struct request_queue *q, struct request *rq) +{ + struct bfq_data *bfqd = q->elevator->elevator_data; + bfqd->rq_in_driver++; +} + +static void bfq_deactivate_request(struct request_queue *q, struct request *rq) +{ + struct bfq_data *bfqd = q->elevator->elevator_data; + + BUG_ON(bfqd->rq_in_driver == 0); + bfqd->rq_in_driver--; +} +#endif + +static void bfq_remove_request(struct request_queue *q, + struct request *rq) +{ + struct bfq_queue *bfqq = RQ_BFQQ(rq); + struct bfq_data *bfqd = bfqq->bfqd; + const int sync = rq_is_sync(rq); + + BUG_ON(bfqq->entity.service > bfqq->entity.budget); + + if (bfqq->next_rq == rq) { + bfqq->next_rq = bfq_find_next_rq(bfqd, bfqq, rq); + if (bfqq->next_rq && !RQ_BFQQ(bfqq->next_rq)) { + pr_crit("no bfqq! for next rq %p bfqq %p\n", + bfqq->next_rq, bfqq); + } + + BUG_ON(bfqq->next_rq && !RQ_BFQQ(bfqq->next_rq)); + if (bfqq->next_rq && RQ_BFQQ(bfqq->next_rq) != bfqq) { + pr_crit( + "wrong bfqq! for next rq %p, rq_bfqq %p bfqq %p\n", + bfqq->next_rq, RQ_BFQQ(bfqq->next_rq), bfqq); + } + BUG_ON(bfqq->next_rq && RQ_BFQQ(bfqq->next_rq) != bfqq); + + bfq_updated_next_req(bfqd, bfqq); + } + + if (rq->queuelist.prev != &rq->queuelist) + list_del_init(&rq->queuelist); + BUG_ON(bfqq->queued[sync] == 0); + bfqq->queued[sync]--; + bfqd->queued--; + elv_rb_del(&bfqq->sort_list, rq); + + elv_rqhash_del(q, rq); + if (q->last_merge == rq) + q->last_merge = NULL; + + if (RB_EMPTY_ROOT(&bfqq->sort_list)) { + bfqq->next_rq = NULL; + + BUG_ON(bfqq->entity.budget < 0); + + if (bfq_bfqq_busy(bfqq) && bfqq != bfqd->in_service_queue) { + BUG_ON(bfqq->ref < 2); /* referred by rq and on tree */ + bfq_del_bfqq_busy(bfqd, bfqq, false); + /* + * bfqq emptied. In normal operation, when + * bfqq is empty, bfqq->entity.service and + * bfqq->entity.budget must contain, + * respectively, the service received and the + * budget used last time bfqq emptied. These + * facts do not hold in this case, as at least + * this last removal occurred while bfqq is + * not in service. To avoid inconsistencies, + * reset both bfqq->entity.service and + * bfqq->entity.budget, if bfqq has still a + * process that may issue I/O requests to it. + */ + bfqq->entity.budget = bfqq->entity.service = 0; + } + + /* + * Remove queue from request-position tree as it is empty. + */ + if (bfqq->pos_root) { + rb_erase(&bfqq->pos_node, bfqq->pos_root); + bfqq->pos_root = NULL; + } + } else { + BUG_ON(!bfqq->next_rq); + bfq_pos_tree_add_move(bfqd, bfqq); + } + + if (rq->cmd_flags & REQ_META) { + BUG_ON(bfqq->meta_pending == 0); + bfqq->meta_pending--; + } +} + +static bool bfq_bio_merge(struct blk_mq_hw_ctx *hctx, struct bio *bio) +{ + struct request_queue *q = hctx->queue; + struct bfq_data *bfqd = q->elevator->elevator_data; + struct request *free = NULL; + /* + * bfq_bic_lookup grabs the queue_lock: invoke it now and + * store its return value for later use, to avoid nesting + * queue_lock inside the bfqd->lock. We assume that the bic + * returned by bfq_bic_lookup does not go away before + * bfqd->lock is taken. + */ + struct bfq_io_cq *bic = bfq_bic_lookup(bfqd, current->io_context, q); + bool ret; + + spin_lock_irq(&bfqd->lock); + + if (bic) + bfqd->bio_bfqq = bic_to_bfqq(bic, op_is_sync(bio->bi_opf)); + else + bfqd->bio_bfqq = NULL; + bfqd->bio_bic = bic; + /* Set next flag just for testing purposes */ + bfqd->bio_bfqq_set = true; + + ret = blk_mq_sched_try_merge(q, bio, &free); + + /* + * XXX Not yet freeing without lock held, to avoid an + * inconsistency with respect to the lock-protected invocation + * of blk_mq_sched_try_insert_merge in bfq_bio_merge. Waiting + * for clarifications from Jens. + */ + if (free) + blk_mq_free_request(free); + bfqd->bio_bfqq_set = false; + spin_unlock_irq(&bfqd->lock); + + return ret; +} + +static int bfq_request_merge(struct request_queue *q, struct request **req, + struct bio *bio) +{ + struct bfq_data *bfqd = q->elevator->elevator_data; + struct request *__rq; + + __rq = bfq_find_rq_fmerge(bfqd, bio, q); + if (__rq && elv_bio_merge_ok(__rq, bio)) { + *req = __rq; + bfq_log(bfqd, "req %p", __rq); + + return ELEVATOR_FRONT_MERGE; + } + + return ELEVATOR_NO_MERGE; +} + +static struct bfq_queue *bfq_init_rq(struct request *rq); + +static void bfq_request_merged(struct request_queue *q, struct request *req, + enum elv_merge type) +{ + BUG_ON(req->rq_flags & RQF_DISP_LIST); + + if (type == ELEVATOR_FRONT_MERGE && + rb_prev(&req->rb_node) && + blk_rq_pos(req) < + blk_rq_pos(container_of(rb_prev(&req->rb_node), + struct request, rb_node))) { + struct bfq_queue *bfqq = bfq_init_rq(req); + struct bfq_data *bfqd = bfqq->bfqd; + struct request *prev, *next_rq; + + /* Reposition request in its sort_list */ + elv_rb_del(&bfqq->sort_list, req); + BUG_ON(!RQ_BFQQ(req)); + BUG_ON(RQ_BFQQ(req) != bfqq); + elv_rb_add(&bfqq->sort_list, req); + + /* Choose next request to be served for bfqq */ + prev = bfqq->next_rq; + next_rq = bfq_choose_req(bfqd, bfqq->next_rq, req, + bfqd->last_position); + BUG_ON(!next_rq); + + bfqq->next_rq = next_rq; + + bfq_log_bfqq(bfqd, bfqq, + "req %p prev %p next_rq %p bfqq %p", + req, prev, next_rq, bfqq); + + /* + * If next_rq changes, update both the queue's budget to + * fit the new request and the queue's position in its + * rq_pos_tree. + */ + if (prev != bfqq->next_rq) { + bfq_updated_next_req(bfqd, bfqq); + bfq_pos_tree_add_move(bfqd, bfqq); + } + } +} + +/* + * This function is called to notify the scheduler that the requests + * rq and 'next' have been merged, with 'next' going away. BFQ + * exploits this hook to address the following issue: if 'next' has a + * fifo_time lower that rq, then the fifo_time of rq must be set to + * the value of 'next', to not forget the greater age of 'next'. + * + * NOTE: in this function we assume that rq is in a bfq_queue, basing + * on that rq is picked from the hash table q->elevator->hash, which, + * in its turn, is filled only with I/O requests present in + * bfq_queues, while BFQ is in use for the request queue q. In fact, + * the function that fills this hash table (elv_rqhash_add) is called + * only by bfq_insert_request. + */ +static void bfq_requests_merged(struct request_queue *q, struct request *rq, + struct request *next) +{ + struct bfq_queue *bfqq = bfq_init_rq(rq), + *next_bfqq = bfq_init_rq(next); + + BUG_ON(!RQ_BFQQ(rq)); + BUG_ON(!RQ_BFQQ(next)); /* this does not imply next is in a bfqq */ + BUG_ON(rq->rq_flags & RQF_DISP_LIST); + BUG_ON(next->rq_flags & RQF_DISP_LIST); + + lockdep_assert_held(&bfqq->bfqd->lock); + + bfq_log_bfqq(bfqq->bfqd, bfqq, + "rq %p next %p bfqq %p next_bfqq %p", + rq, next, bfqq, next_bfqq); + + /* + * If next and rq belong to the same bfq_queue and next is older + * than rq, then reposition rq in the fifo (by substituting next + * with rq). Otherwise, if next and rq belong to different + * bfq_queues, never reposition rq: in fact, we would have to + * reposition it with respect to next's position in its own fifo, + * which would most certainly be too expensive with respect to + * the benefits. + */ + if (bfqq == next_bfqq && + !list_empty(&rq->queuelist) && !list_empty(&next->queuelist) && + next->fifo_time < rq->fifo_time) { + list_del_init(&rq->queuelist); + list_replace_init(&next->queuelist, &rq->queuelist); + rq->fifo_time = next->fifo_time; + } + + if (bfqq->next_rq == next) + bfqq->next_rq = rq; + + bfqg_stats_update_io_merged(bfqq_group(bfqq), next->cmd_flags); +} + +/* Must be called with bfqq != NULL */ +static void bfq_bfqq_end_wr(struct bfq_queue *bfqq) +{ + BUG_ON(!bfqq); + + if (bfq_bfqq_busy(bfqq)) { + bfqq->bfqd->wr_busy_queues--; + BUG_ON(bfqq->bfqd->wr_busy_queues < 0); + } + bfqq->wr_coeff = 1; + bfqq->wr_cur_max_time = 0; + bfqq->last_wr_start_finish = jiffies; + /* + * Trigger a weight change on the next invocation of + * __bfq_entity_update_weight_prio. + */ + bfqq->entity.prio_changed = 1; + bfq_log_bfqq(bfqq->bfqd, bfqq, + "wrais ending at %lu, rais_max_time %u", + bfqq->last_wr_start_finish, + jiffies_to_msecs(bfqq->wr_cur_max_time)); + bfq_log_bfqq(bfqq->bfqd, bfqq, "wr_busy %d", + bfqq->bfqd->wr_busy_queues); +} + +static void bfq_end_wr_async_queues(struct bfq_data *bfqd, + struct bfq_group *bfqg) +{ + int i, j; + + for (i = 0; i < 2; i++) + for (j = 0; j < IOPRIO_BE_NR; j++) + if (bfqg->async_bfqq[i][j]) + bfq_bfqq_end_wr(bfqg->async_bfqq[i][j]); + if (bfqg->async_idle_bfqq) + bfq_bfqq_end_wr(bfqg->async_idle_bfqq); +} + +static void bfq_end_wr(struct bfq_data *bfqd) +{ + struct bfq_queue *bfqq; + + spin_lock_irq(&bfqd->lock); + + list_for_each_entry(bfqq, &bfqd->active_list, bfqq_list) + bfq_bfqq_end_wr(bfqq); + list_for_each_entry(bfqq, &bfqd->idle_list, bfqq_list) + bfq_bfqq_end_wr(bfqq); + bfq_end_wr_async(bfqd); + + spin_unlock_irq(&bfqd->lock); +} + +static sector_t bfq_io_struct_pos(void *io_struct, bool request) +{ + if (request) + return blk_rq_pos(io_struct); + else + return ((struct bio *)io_struct)->bi_iter.bi_sector; +} + +static int bfq_rq_close_to_sector(void *io_struct, bool request, + sector_t sector) +{ + return abs(bfq_io_struct_pos(io_struct, request) - sector) <= + BFQQ_CLOSE_THR; +} + +static struct bfq_queue *bfqq_find_close(struct bfq_data *bfqd, + struct bfq_queue *bfqq, + sector_t sector) +{ + struct rb_root *root = &bfq_bfqq_to_bfqg(bfqq)->rq_pos_tree; + struct rb_node *parent, *node; + struct bfq_queue *__bfqq; + + if (RB_EMPTY_ROOT(root)) + return NULL; + + /* + * First, if we find a request starting at the end of the last + * request, choose it. + */ + __bfqq = bfq_rq_pos_tree_lookup(bfqd, root, sector, &parent, NULL); + if (__bfqq) + return __bfqq; + + /* + * If the exact sector wasn't found, the parent of the NULL leaf + * will contain the closest sector (rq_pos_tree sorted by + * next_request position). + */ + __bfqq = rb_entry(parent, struct bfq_queue, pos_node); + if (bfq_rq_close_to_sector(__bfqq->next_rq, true, sector)) + return __bfqq; + + if (blk_rq_pos(__bfqq->next_rq) < sector) + node = rb_next(&__bfqq->pos_node); + else + node = rb_prev(&__bfqq->pos_node); + if (!node) + return NULL; + + __bfqq = rb_entry(node, struct bfq_queue, pos_node); + if (bfq_rq_close_to_sector(__bfqq->next_rq, true, sector)) + return __bfqq; + + return NULL; +} + +static struct bfq_queue *bfq_find_close_cooperator(struct bfq_data *bfqd, + struct bfq_queue *cur_bfqq, + sector_t sector) +{ + struct bfq_queue *bfqq; + + /* + * We shall notice if some of the queues are cooperating, + * e.g., working closely on the same area of the device. In + * that case, we can group them together and: 1) don't waste + * time idling, and 2) serve the union of their requests in + * the best possible order for throughput. + */ + bfqq = bfqq_find_close(bfqd, cur_bfqq, sector); + if (!bfqq || bfqq == cur_bfqq) + return NULL; + + return bfqq; +} + +static struct bfq_queue * +bfq_setup_merge(struct bfq_queue *bfqq, struct bfq_queue *new_bfqq) +{ + int process_refs, new_process_refs; + struct bfq_queue *__bfqq; + + /* + * If there are no process references on the new_bfqq, then it is + * unsafe to follow the ->new_bfqq chain as other bfqq's in the chain + * may have dropped their last reference (not just their last process + * reference). + */ + if (!bfqq_process_refs(new_bfqq)) + return NULL; + + /* Avoid a circular list and skip interim queue merges. */ + while ((__bfqq = new_bfqq->new_bfqq)) { + if (__bfqq == bfqq) + return NULL; + new_bfqq = __bfqq; + } + + process_refs = bfqq_process_refs(bfqq); + new_process_refs = bfqq_process_refs(new_bfqq); + /* + * If the process for the bfqq has gone away, there is no + * sense in merging the queues. + */ + if (process_refs == 0 || new_process_refs == 0) + return NULL; + + bfq_log_bfqq(bfqq->bfqd, bfqq, "scheduling merge with queue %d", + new_bfqq->pid); + + /* + * Merging is just a redirection: the requests of the process + * owning one of the two queues are redirected to the other queue. + * The latter queue, in its turn, is set as shared if this is the + * first time that the requests of some process are redirected to + * it. + * + * We redirect bfqq to new_bfqq and not the opposite, because + * we are in the context of the process owning bfqq, thus we + * have the io_cq of this process. So we can immediately + * configure this io_cq to redirect the requests of the + * process to new_bfqq. In contrast, the io_cq of new_bfqq is + * not available any more (new_bfqq->bic == NULL). + * + * Anyway, even in case new_bfqq coincides with the in-service + * queue, redirecting requests the in-service queue is the + * best option, as we feed the in-service queue with new + * requests close to the last request served and, by doing so, + * are likely to increase the throughput. + */ + bfqq->new_bfqq = new_bfqq; + new_bfqq->ref += process_refs; + return new_bfqq; +} + +static bool bfq_may_be_close_cooperator(struct bfq_queue *bfqq, + struct bfq_queue *new_bfqq) +{ + if (bfq_too_late_for_merging(new_bfqq)) { + bfq_log_bfqq(bfqq->bfqd, bfqq, + "too late for bfq%d to be merged", + new_bfqq->pid); + return false; + } + + if (bfq_class_idle(bfqq) || bfq_class_idle(new_bfqq) || + (bfqq->ioprio_class != new_bfqq->ioprio_class)) + return false; + + /* + * If either of the queues has already been detected as seeky, + * then merging it with the other queue is unlikely to lead to + * sequential I/O. + */ + if (BFQQ_SEEKY(bfqq) || BFQQ_SEEKY(new_bfqq)) + return false; + + /* + * Interleaved I/O is known to be done by (some) applications + * only for reads, so it does not make sense to merge async + * queues. + */ + if (!bfq_bfqq_sync(bfqq) || !bfq_bfqq_sync(new_bfqq)) + return false; + + return true; +} + +/* + * Attempt to schedule a merge of bfqq with the currently in-service + * queue or with a close queue among the scheduled queues. Return + * NULL if no merge was scheduled, a pointer to the shared bfq_queue + * structure otherwise. + * + * The OOM queue is not allowed to participate to cooperation: in fact, since + * the requests temporarily redirected to the OOM queue could be redirected + * again to dedicated queues at any time, the state needed to correctly + * handle merging with the OOM queue would be quite complex and expensive + * to maintain. Besides, in such a critical condition as an out of memory, + * the benefits of queue merging may be little relevant, or even negligible. + * + * WARNING: queue merging may impair fairness among non-weight raised + * queues, for at least two reasons: 1) the original weight of a + * merged queue may change during the merged state, 2) even being the + * weight the same, a merged queue may be bloated with many more + * requests than the ones produced by its originally-associated + * process. + */ +static struct bfq_queue * +bfq_setup_cooperator(struct bfq_data *bfqd, struct bfq_queue *bfqq, + void *io_struct, bool request) +{ + struct bfq_queue *in_service_bfqq, *new_bfqq; + + /* + * Prevent bfqq from being merged if it has been created too + * long ago. The idea is that true cooperating processes, and + * thus their associated bfq_queues, are supposed to be + * created shortly after each other. This is the case, e.g., + * for KVM/QEMU and dump I/O threads. Basing on this + * assumption, the following filtering greatly reduces the + * probability that two non-cooperating processes, which just + * happen to do close I/O for some short time interval, have + * their queues merged by mistake. + */ + if (bfq_too_late_for_merging(bfqq)) { + bfq_log_bfqq(bfqd, bfqq, + "would have looked for coop, but too late"); + return NULL; + } + + if (bfqq->new_bfqq) + return bfqq->new_bfqq; + + if (!io_struct || unlikely(bfqq == &bfqd->oom_bfqq)) + return NULL; + + /* If there is only one backlogged queue, don't search. */ + if (bfqd->busy_queues == 1) + return NULL; + + in_service_bfqq = bfqd->in_service_queue; + + if (in_service_bfqq && in_service_bfqq != bfqq && + likely(in_service_bfqq != &bfqd->oom_bfqq) && + bfq_rq_close_to_sector(io_struct, request, bfqd->last_position) && + bfqq->entity.parent == in_service_bfqq->entity.parent && + bfq_may_be_close_cooperator(bfqq, in_service_bfqq)) { + new_bfqq = bfq_setup_merge(bfqq, in_service_bfqq); + if (new_bfqq) + return new_bfqq; + } + /* + * Check whether there is a cooperator among currently scheduled + * queues. The only thing we need is that the bio/request is not + * NULL, as we need it to establish whether a cooperator exists. + */ + new_bfqq = bfq_find_close_cooperator(bfqd, bfqq, + bfq_io_struct_pos(io_struct, request)); + + BUG_ON(new_bfqq && bfqq->entity.parent != new_bfqq->entity.parent); + + if (new_bfqq && likely(new_bfqq != &bfqd->oom_bfqq) && + bfq_may_be_close_cooperator(bfqq, new_bfqq)) + return bfq_setup_merge(bfqq, new_bfqq); + + return NULL; +} + +static void bfq_bfqq_save_state(struct bfq_queue *bfqq) +{ + struct bfq_io_cq *bic = bfqq->bic; + + /* + * If !bfqq->bic, the queue is already shared or its requests + * have already been redirected to a shared queue; both idle window + * and weight raising state have already been saved. Do nothing. + */ + if (!bic) + return; + + bic->saved_ttime = bfqq->ttime; + bic->saved_has_short_ttime = bfq_bfqq_has_short_ttime(bfqq); + bic->saved_IO_bound = bfq_bfqq_IO_bound(bfqq); + bic->saved_in_large_burst = bfq_bfqq_in_large_burst(bfqq); + bic->was_in_burst_list = !hlist_unhashed(&bfqq->burst_list_node); + if (unlikely(bfq_bfqq_just_created(bfqq) && + !bfq_bfqq_in_large_burst(bfqq) && + bfqq->bfqd->low_latency)) { + /* + * bfqq being merged ritgh after being created: bfqq + * would have deserved interactive weight raising, but + * did not make it to be set in a weight-raised state, + * because of this early merge. Store directly the + * weight-raising state that would have been assigned + * to bfqq, so that to avoid that bfqq unjustly fails + * to enjoy weight raising if split soon. + */ + bic->saved_wr_coeff = bfqq->bfqd->bfq_wr_coeff; + bic->saved_wr_cur_max_time = bfq_wr_duration(bfqq->bfqd); + bic->saved_last_wr_start_finish = jiffies; + } else { + bic->saved_wr_coeff = bfqq->wr_coeff; + bic->saved_wr_start_at_switch_to_srt = + bfqq->wr_start_at_switch_to_srt; + bic->saved_last_wr_start_finish = bfqq->last_wr_start_finish; + bic->saved_wr_cur_max_time = bfqq->wr_cur_max_time; + } + BUG_ON(time_is_after_jiffies(bfqq->last_wr_start_finish)); + bfq_log_bfqq(bfqq->bfqd, bfqq, + "bic %p wr_coeff %d start_finish %lu max_time %lu", + bic, bfqq->wr_coeff, bfqq->last_wr_start_finish, + bfqq->wr_cur_max_time); +} + +static void +bfq_merge_bfqqs(struct bfq_data *bfqd, struct bfq_io_cq *bic, + struct bfq_queue *bfqq, struct bfq_queue *new_bfqq) +{ + bfq_log_bfqq(bfqd, bfqq, "merging with queue %lu", + (unsigned long) new_bfqq->pid); + BUG_ON(bfqq->bic && bfqq->bic == new_bfqq->bic); + /* Save weight raising and idle window of the merged queues */ + bfq_bfqq_save_state(bfqq); + bfq_bfqq_save_state(new_bfqq); + + if (bfq_bfqq_IO_bound(bfqq)) + bfq_mark_bfqq_IO_bound(new_bfqq); + bfq_clear_bfqq_IO_bound(bfqq); + + /* + * If bfqq is weight-raised, then let new_bfqq inherit + * weight-raising. To reduce false positives, neglect the case + * where bfqq has just been created, but has not yet made it + * to be weight-raised (which may happen because EQM may merge + * bfqq even before bfq_add_request is executed for the first + * time for bfqq). Handling this case would however be very + * easy, thanks to the flag just_created. + */ + if (new_bfqq->wr_coeff == 1 && bfqq->wr_coeff > 1) { + new_bfqq->wr_coeff = bfqq->wr_coeff; + new_bfqq->wr_cur_max_time = bfqq->wr_cur_max_time; + new_bfqq->last_wr_start_finish = bfqq->last_wr_start_finish; + new_bfqq->wr_start_at_switch_to_srt = + bfqq->wr_start_at_switch_to_srt; + if (bfq_bfqq_busy(new_bfqq)) { + bfqd->wr_busy_queues++; + BUG_ON(bfqd->wr_busy_queues > bfqd->busy_queues); + } + + new_bfqq->entity.prio_changed = 1; + bfq_log_bfqq(bfqd, new_bfqq, + "wr start after merge with %d, rais_max_time %u", + bfqq->pid, + jiffies_to_msecs(bfqq->wr_cur_max_time)); + } + + if (bfqq->wr_coeff > 1) { /* bfqq has given its wr to new_bfqq */ + bfqq->wr_coeff = 1; + bfqq->entity.prio_changed = 1; + if (bfq_bfqq_busy(bfqq)) { + bfqd->wr_busy_queues--; + BUG_ON(bfqd->wr_busy_queues < 0); + } + + } + + bfq_log_bfqq(bfqd, new_bfqq, "wr_busy %d", + bfqd->wr_busy_queues); + + /* + * Merge queues (that is, let bic redirect its requests to new_bfqq) + */ + bic_set_bfqq(bic, new_bfqq, 1); + bfq_mark_bfqq_coop(new_bfqq); + /* + * new_bfqq now belongs to at least two bics (it is a shared queue): + * set new_bfqq->bic to NULL. bfqq either: + * - does not belong to any bic any more, and hence bfqq->bic must + * be set to NULL, or + * - is a queue whose owning bics have already been redirected to a + * different queue, hence the queue is destined to not belong to + * any bic soon and bfqq->bic is already NULL (therefore the next + * assignment causes no harm). + */ + new_bfqq->bic = NULL; + bfqq->bic = NULL; + /* release process reference to bfqq */ + bfq_put_queue(bfqq); +} + +static bool bfq_allow_bio_merge(struct request_queue *q, struct request *rq, + struct bio *bio) +{ + struct bfq_data *bfqd = q->elevator->elevator_data; + bool is_sync = op_is_sync(bio->bi_opf); + struct bfq_queue *bfqq = bfqd->bio_bfqq, *new_bfqq; + + assert_spin_locked(&bfqd->lock); + /* + * Disallow merge of a sync bio into an async request. + */ + if (is_sync && !rq_is_sync(rq)) + return false; + + /* + * Lookup the bfqq that this bio will be queued with. Allow + * merge only if rq is queued there. + */ + BUG_ON(!bfqd->bio_bfqq_set); + if (!bfqq) + return false; + + /* + * We take advantage of this function to perform an early merge + * of the queues of possible cooperating processes. + */ + new_bfqq = bfq_setup_cooperator(bfqd, bfqq, bio, false); + BUG_ON(new_bfqq == bfqq); + if (new_bfqq) { + /* + * bic still points to bfqq, then it has not yet been + * redirected to some other bfq_queue, and a queue + * merge beween bfqq and new_bfqq can be safely + * fulfillled, i.e., bic can be redirected to new_bfqq + * and bfqq can be put. + */ + bfq_merge_bfqqs(bfqd, bfqd->bio_bic, bfqq, + new_bfqq); + /* + * If we get here, bio will be queued into new_queue, + * so use new_bfqq to decide whether bio and rq can be + * merged. + */ + bfqq = new_bfqq; + + /* + * Change also bqfd->bio_bfqq, as + * bfqd->bio_bic now points to new_bfqq, and + * this function may be invoked again (and then may + * use again bqfd->bio_bfqq). + */ + bfqd->bio_bfqq = bfqq; + } + return bfqq == RQ_BFQQ(rq); +} + +/* + * Set the maximum time for the in-service queue to consume its + * budget. This prevents seeky processes from lowering the throughput. + * In practice, a time-slice service scheme is used with seeky + * processes. + */ +static void bfq_set_budget_timeout(struct bfq_data *bfqd, + struct bfq_queue *bfqq) +{ + unsigned int timeout_coeff; + + if (bfqq->wr_cur_max_time == bfqd->bfq_wr_rt_max_time) + timeout_coeff = 1; + else + timeout_coeff = bfqq->entity.weight / bfqq->entity.orig_weight; + + bfqd->last_budget_start = ktime_get(); + + bfqq->budget_timeout = jiffies + + bfqd->bfq_timeout * timeout_coeff; + + bfq_log_bfqq(bfqd, bfqq, "%u", + jiffies_to_msecs(bfqd->bfq_timeout * timeout_coeff)); +} + +static void __bfq_set_in_service_queue(struct bfq_data *bfqd, + struct bfq_queue *bfqq) +{ + if (bfqq) { + bfq_clear_bfqq_fifo_expire(bfqq); + + bfqd->budgets_assigned = (bfqd->budgets_assigned*7 + 256) / 8; + + BUG_ON(bfqq == bfqd->in_service_queue); + BUG_ON(RB_EMPTY_ROOT(&bfqq->sort_list)); + + if (time_is_before_jiffies(bfqq->last_wr_start_finish) && + bfqq->wr_coeff > 1 && + bfqq->wr_cur_max_time == bfqd->bfq_wr_rt_max_time && + time_is_before_jiffies(bfqq->budget_timeout)) { + /* + * For soft real-time queues, move the start + * of the weight-raising period forward by the + * time the queue has not received any + * service. Otherwise, a relatively long + * service delay is likely to cause the + * weight-raising period of the queue to end, + * because of the short duration of the + * weight-raising period of a soft real-time + * queue. It is worth noting that this move + * is not so dangerous for the other queues, + * because soft real-time queues are not + * greedy. + * + * To not add a further variable, we use the + * overloaded field budget_timeout to + * determine for how long the queue has not + * received service, i.e., how much time has + * elapsed since the queue expired. However, + * this is a little imprecise, because + * budget_timeout is set to jiffies if bfqq + * not only expires, but also remains with no + * request. + */ + if (time_after(bfqq->budget_timeout, + bfqq->last_wr_start_finish)) + bfqq->last_wr_start_finish += + jiffies - bfqq->budget_timeout; + else + bfqq->last_wr_start_finish = jiffies; + + if (time_is_after_jiffies(bfqq->last_wr_start_finish)) { + pr_crit( + "BFQ WARNING:last %lu budget %lu jiffies %lu", + bfqq->last_wr_start_finish, + bfqq->budget_timeout, + jiffies); + pr_crit("diff %lu", jiffies - + max_t(unsigned long, + bfqq->last_wr_start_finish, + bfqq->budget_timeout)); + bfqq->last_wr_start_finish = jiffies; + } + } + + bfq_set_budget_timeout(bfqd, bfqq); + bfq_log_bfqq(bfqd, bfqq, + "cur-budget = %d", + bfqq->entity.budget); + } else + bfq_log(bfqd, "NULL"); + + bfqd->in_service_queue = bfqq; +} + +/* + * Get and set a new queue for service. + */ +static struct bfq_queue *bfq_set_in_service_queue(struct bfq_data *bfqd) +{ + struct bfq_queue *bfqq = bfq_get_next_queue(bfqd); + + __bfq_set_in_service_queue(bfqd, bfqq); + return bfqq; +} + +static void bfq_arm_slice_timer(struct bfq_data *bfqd) +{ + struct bfq_queue *bfqq = bfqd->in_service_queue; + u32 sl; + + BUG_ON(!RB_EMPTY_ROOT(&bfqq->sort_list)); + + bfq_mark_bfqq_wait_request(bfqq); + + /* + * We don't want to idle for seeks, but we do want to allow + * fair distribution of slice time for a process doing back-to-back + * seeks. So allow a little bit of time for him to submit a new rq. + * + * To prevent processes with (partly) seeky workloads from + * being too ill-treated, grant them a small fraction of the + * assigned budget before reducing the waiting time to + * BFQ_MIN_TT. This happened to help reduce latency. + */ + sl = bfqd->bfq_slice_idle; + /* + * Unless the queue is being weight-raised or the scenario is + * asymmetric, grant only minimum idle time if the queue + * is seeky. A long idling is preserved for a weight-raised + * queue, or, more in general, in an asymemtric scenario, + * because a long idling is needed for guaranteeing to a queue + * its reserved share of the throughput (in particular, it is + * needed if the queue has a higher weight than some other + * queue). + */ + if (BFQQ_SEEKY(bfqq) && bfqq->wr_coeff == 1 && + bfq_symmetric_scenario(bfqd)) + sl = min_t(u32, sl, BFQ_MIN_TT); + + bfqd->last_idling_start = ktime_get(); + hrtimer_start(&bfqd->idle_slice_timer, ns_to_ktime(sl), + HRTIMER_MODE_REL); + bfqg_stats_set_start_idle_time(bfqq_group(bfqq)); + bfq_log(bfqd, "arm idle: %ld/%ld ms", + sl / NSEC_PER_MSEC, bfqd->bfq_slice_idle / NSEC_PER_MSEC); +} + +/* + * In autotuning mode, max_budget is dynamically recomputed as the + * amount of sectors transferred in timeout at the estimated peak + * rate. This enables BFQ to utilize a full timeslice with a full + * budget, even if the in-service queue is served at peak rate. And + * this maximises throughput with sequential workloads. + */ +static unsigned long bfq_calc_max_budget(struct bfq_data *bfqd) +{ + return (u64)bfqd->peak_rate * USEC_PER_MSEC * + jiffies_to_msecs(bfqd->bfq_timeout)>>BFQ_RATE_SHIFT; +} + +/* + * Update parameters related to throughput and responsiveness, as a + * function of the estimated peak rate. See comments on + * bfq_calc_max_budget(), and on the ref_wr_duration array. + */ +static void update_thr_responsiveness_params(struct bfq_data *bfqd) +{ + if (bfqd->bfq_user_max_budget == 0) { + bfqd->bfq_max_budget = + bfq_calc_max_budget(bfqd); + BUG_ON(bfqd->bfq_max_budget < 0); + bfq_log(bfqd, "new max_budget = %d", + bfqd->bfq_max_budget); + } +} + +static void bfq_reset_rate_computation(struct bfq_data *bfqd, struct request *rq) +{ + if (rq != NULL) { /* new rq dispatch now, reset accordingly */ + bfqd->last_dispatch = bfqd->first_dispatch = ktime_get_ns() ; + bfqd->peak_rate_samples = 1; + bfqd->sequential_samples = 0; + bfqd->tot_sectors_dispatched = bfqd->last_rq_max_size = + blk_rq_sectors(rq); + } else /* no new rq dispatched, just reset the number of samples */ + bfqd->peak_rate_samples = 0; /* full re-init on next disp. */ + + bfq_log(bfqd, + "at end, sample %u/%u tot_sects %llu", + bfqd->peak_rate_samples, bfqd->sequential_samples, + bfqd->tot_sectors_dispatched); +} + +static void bfq_update_rate_reset(struct bfq_data *bfqd, struct request *rq) +{ + u32 rate, weight, divisor; + + /* + * For the convergence property to hold (see comments on + * bfq_update_peak_rate()) and for the assessment to be + * reliable, a minimum number of samples must be present, and + * a minimum amount of time must have elapsed. If not so, do + * not compute new rate. Just reset parameters, to get ready + * for a new evaluation attempt. + */ + if (bfqd->peak_rate_samples < BFQ_RATE_MIN_SAMPLES || + bfqd->delta_from_first < BFQ_RATE_MIN_INTERVAL) { + bfq_log(bfqd, + "only resetting, delta_first %lluus samples %d", + bfqd->delta_from_first>>10, bfqd->peak_rate_samples); + goto reset_computation; + } + + /* + * If a new request completion has occurred after last + * dispatch, then, to approximate the rate at which requests + * have been served by the device, it is more precise to + * extend the observation interval to the last completion. + */ + bfqd->delta_from_first = + max_t(u64, bfqd->delta_from_first, + bfqd->last_completion - bfqd->first_dispatch); + + BUG_ON(bfqd->delta_from_first == 0); + /* + * Rate computed in sects/usec, and not sects/nsec, for + * precision issues. + */ + rate = div64_ul(bfqd->tot_sectors_dispatched<delta_from_first, NSEC_PER_USEC)); + + bfq_log(bfqd, +"tot_sects %llu delta_first %lluus rate %llu sects/s (%d)", + bfqd->tot_sectors_dispatched, bfqd->delta_from_first>>10, + ((USEC_PER_SEC*(u64)rate)>>BFQ_RATE_SHIFT), + rate > 20< 20M sectors/sec) + */ + if ((bfqd->sequential_samples < (3 * bfqd->peak_rate_samples)>>2 && + rate <= bfqd->peak_rate) || + rate > 20<peak_rate_samples, bfqd->sequential_samples, + ((USEC_PER_SEC*(u64)rate)>>BFQ_RATE_SHIFT), + ((USEC_PER_SEC*(u64)bfqd->peak_rate)>>BFQ_RATE_SHIFT)); + goto reset_computation; + } else { + bfq_log(bfqd, + "do update, samples %u/%u rate/peak %llu/%llu", + bfqd->peak_rate_samples, bfqd->sequential_samples, + ((USEC_PER_SEC*(u64)rate)>>BFQ_RATE_SHIFT), + ((USEC_PER_SEC*(u64)bfqd->peak_rate)>>BFQ_RATE_SHIFT)); + } + + /* + * We have to update the peak rate, at last! To this purpose, + * we use a low-pass filter. We compute the smoothing constant + * of the filter as a function of the 'weight' of the new + * measured rate. + * + * As can be seen in next formulas, we define this weight as a + * quantity proportional to how sequential the workload is, + * and to how long the observation time interval is. + * + * The weight runs from 0 to 8. The maximum value of the + * weight, 8, yields the minimum value for the smoothing + * constant. At this minimum value for the smoothing constant, + * the measured rate contributes for half of the next value of + * the estimated peak rate. + * + * So, the first step is to compute the weight as a function + * of how sequential the workload is. Note that the weight + * cannot reach 9, because bfqd->sequential_samples cannot + * become equal to bfqd->peak_rate_samples, which, in its + * turn, holds true because bfqd->sequential_samples is not + * incremented for the first sample. + */ + weight = (9 * bfqd->sequential_samples) / bfqd->peak_rate_samples; + + /* + * Second step: further refine the weight as a function of the + * duration of the observation interval. + */ + weight = min_t(u32, 8, + div_u64(weight * bfqd->delta_from_first, + BFQ_RATE_REF_INTERVAL)); + + /* + * Divisor ranging from 10, for minimum weight, to 2, for + * maximum weight. + */ + divisor = 10 - weight; + BUG_ON(divisor == 0); + + /* + * Finally, update peak rate: + * + * peak_rate = peak_rate * (divisor-1) / divisor + rate / divisor + */ + bfqd->peak_rate *= divisor-1; + bfqd->peak_rate /= divisor; + rate /= divisor; /* smoothing constant alpha = 1/divisor */ + + bfq_log(bfqd, + "divisor %d tmp_peak_rate %llu tmp_rate %u", + divisor, + ((USEC_PER_SEC*(u64)bfqd->peak_rate)>>BFQ_RATE_SHIFT), + (u32)((USEC_PER_SEC*(u64)rate)>>BFQ_RATE_SHIFT)); + + BUG_ON(bfqd->peak_rate == 0); + BUG_ON(bfqd->peak_rate > 20<peak_rate += rate; + + /* + * For a very slow device, bfqd->peak_rate can reach 0 (see + * the minimum representable values reported in the comments + * on BFQ_RATE_SHIFT). Push to 1 if this happens, to avoid + * divisions by zero where bfqd->peak_rate is used as a + * divisor. + */ + bfqd->peak_rate = max_t(u32, 1, bfqd->peak_rate); + + update_thr_responsiveness_params(bfqd); + BUG_ON(bfqd->peak_rate > 20<peak_rate_samples == 0) { /* first dispatch */ + bfq_log(bfqd, + "goto reset, samples %d", + bfqd->peak_rate_samples) ; + bfq_reset_rate_computation(bfqd, rq); + goto update_last_values; /* will add one sample */ + } + + /* + * Device idle for very long: the observation interval lasting + * up to this dispatch cannot be a valid observation interval + * for computing a new peak rate (similarly to the late- + * completion event in bfq_completed_request()). Go to + * update_rate_and_reset to have the following three steps + * taken: + * - close the observation interval at the last (previous) + * request dispatch or completion + * - compute rate, if possible, for that observation interval + * - start a new observation interval with this dispatch + */ + if (now_ns - bfqd->last_dispatch > 100*NSEC_PER_MSEC && + bfqd->rq_in_driver == 0) { + bfq_log(bfqd, +"jumping to updating&resetting delta_last %lluus samples %d", + (now_ns - bfqd->last_dispatch)>>10, + bfqd->peak_rate_samples) ; + goto update_rate_and_reset; + } + + /* Update sampling information */ + bfqd->peak_rate_samples++; + + if ((bfqd->rq_in_driver > 0 || + now_ns - bfqd->last_completion < BFQ_MIN_TT) + && get_sdist(bfqd->last_position, rq) < BFQQ_SEEK_THR) + bfqd->sequential_samples++; + + bfqd->tot_sectors_dispatched += blk_rq_sectors(rq); + + /* Reset max observed rq size every 32 dispatches */ + if (likely(bfqd->peak_rate_samples % 32)) + bfqd->last_rq_max_size = + max_t(u32, blk_rq_sectors(rq), bfqd->last_rq_max_size); + else + bfqd->last_rq_max_size = blk_rq_sectors(rq); + + bfqd->delta_from_first = now_ns - bfqd->first_dispatch; + + bfq_log(bfqd, + "added samples %u/%u tot_sects %llu delta_first %lluus", + bfqd->peak_rate_samples, bfqd->sequential_samples, + bfqd->tot_sectors_dispatched, + bfqd->delta_from_first>>10); + + /* Target observation interval not yet reached, go on sampling */ + if (bfqd->delta_from_first < BFQ_RATE_REF_INTERVAL) + goto update_last_values; + +update_rate_and_reset: + bfq_update_rate_reset(bfqd, rq); +update_last_values: + bfqd->last_position = blk_rq_pos(rq) + blk_rq_sectors(rq); + bfqd->last_dispatch = now_ns; + + bfq_log(bfqd, + "delta_first %lluus last_pos %llu peak_rate %llu", + (now_ns - bfqd->first_dispatch)>>10, + (unsigned long long) bfqd->last_position, + ((USEC_PER_SEC*(u64)bfqd->peak_rate)>>BFQ_RATE_SHIFT)); + bfq_log(bfqd, + "samples at end %d", bfqd->peak_rate_samples); +} + +/* + * Remove request from internal lists. + */ +static void bfq_dispatch_remove(struct request_queue *q, struct request *rq) +{ + struct bfq_queue *bfqq = RQ_BFQQ(rq); + + /* + * For consistency, the next instruction should have been + * executed after removing the request from the queue and + * dispatching it. We execute instead this instruction before + * bfq_remove_request() (and hence introduce a temporary + * inconsistency), for efficiency. In fact, should this + * dispatch occur for a non in-service bfqq, this anticipated + * increment prevents two counters related to bfqq->dispatched + * from risking to be, first, uselessly decremented, and then + * incremented again when the (new) value of bfqq->dispatched + * happens to be taken into account. + */ + bfqq->dispatched++; + bfq_update_peak_rate(q->elevator->elevator_data, rq); + + bfq_remove_request(q, rq); +} + +static void __bfq_bfqq_expire(struct bfq_data *bfqd, struct bfq_queue *bfqq) +{ + BUG_ON(bfqq != bfqd->in_service_queue); + + /* + * If this bfqq is shared between multiple processes, check + * to make sure that those processes are still issuing I/Os + * within the mean seek distance. If not, it may be time to + * break the queues apart again. + */ + if (bfq_bfqq_coop(bfqq) && BFQQ_SEEKY(bfqq)) + bfq_mark_bfqq_split_coop(bfqq); + + if (RB_EMPTY_ROOT(&bfqq->sort_list)) { + if (bfqq->dispatched == 0) + /* + * Overloading budget_timeout field to store + * the time at which the queue remains with no + * backlog and no outstanding request; used by + * the weight-raising mechanism. + */ + bfqq->budget_timeout = jiffies; + + bfq_del_bfqq_busy(bfqd, bfqq, true); + } else { + bfq_requeue_bfqq(bfqd, bfqq, true); + /* + * Resort priority tree of potential close cooperators. + */ + bfq_pos_tree_add_move(bfqd, bfqq); + } + + /* + * All in-service entities must have been properly deactivated + * or requeued before executing the next function, which + * resets all in-service entites as no more in service. + */ + __bfq_bfqd_reset_in_service(bfqd); +} + +/** + * __bfq_bfqq_recalc_budget - try to adapt the budget to the @bfqq behavior. + * @bfqd: device data. + * @bfqq: queue to update. + * @reason: reason for expiration. + * + * Handle the feedback on @bfqq budget at queue expiration. + * See the body for detailed comments. + */ +static void __bfq_bfqq_recalc_budget(struct bfq_data *bfqd, + struct bfq_queue *bfqq, + enum bfqq_expiration reason) +{ + struct request *next_rq; + int budget, min_budget; + + BUG_ON(bfqq != bfqd->in_service_queue); + + min_budget = bfq_min_budget(bfqd); + + if (bfqq->wr_coeff == 1) + budget = bfqq->max_budget; + else /* + * Use a constant, low budget for weight-raised queues, + * to help achieve a low latency. Keep it slightly higher + * than the minimum possible budget, to cause a little + * bit fewer expirations. + */ + budget = 2 * min_budget; + + bfq_log_bfqq(bfqd, bfqq, "last budg %d, budg left %d", + bfqq->entity.budget, bfq_bfqq_budget_left(bfqq)); + bfq_log_bfqq(bfqd, bfqq, "last max_budg %d, min budg %d", + budget, bfq_min_budget(bfqd)); + bfq_log_bfqq(bfqd, bfqq, "sync %d, seeky %d", + bfq_bfqq_sync(bfqq), BFQQ_SEEKY(bfqd->in_service_queue)); + + if (bfq_bfqq_sync(bfqq) && bfqq->wr_coeff == 1) { + switch (reason) { + /* + * Caveat: in all the following cases we trade latency + * for throughput. + */ + case BFQ_BFQQ_TOO_IDLE: + /* + * This is the only case where we may reduce + * the budget: if there is no request of the + * process still waiting for completion, then + * we assume (tentatively) that the timer has + * expired because the batch of requests of + * the process could have been served with a + * smaller budget. Hence, betting that + * process will behave in the same way when it + * becomes backlogged again, we reduce its + * next budget. As long as we guess right, + * this budget cut reduces the latency + * experienced by the process. + * + * However, if there are still outstanding + * requests, then the process may have not yet + * issued its next request just because it is + * still waiting for the completion of some of + * the still outstanding ones. So in this + * subcase we do not reduce its budget, on the + * contrary we increase it to possibly boost + * the throughput, as discussed in the + * comments to the BUDGET_TIMEOUT case. + */ + if (bfqq->dispatched > 0) /* still outstanding reqs */ + budget = min(budget * 2, bfqd->bfq_max_budget); + else { + if (budget > 5 * min_budget) + budget -= 4 * min_budget; + else + budget = min_budget; + } + break; + case BFQ_BFQQ_BUDGET_TIMEOUT: + /* + * We double the budget here because it gives + * the chance to boost the throughput if this + * is not a seeky process (and has bumped into + * this timeout because of, e.g., ZBR). + */ + budget = min(budget * 2, bfqd->bfq_max_budget); + break; + case BFQ_BFQQ_BUDGET_EXHAUSTED: + /* + * The process still has backlog, and did not + * let either the budget timeout or the disk + * idling timeout expire. Hence it is not + * seeky, has a short thinktime and may be + * happy with a higher budget too. So + * definitely increase the budget of this good + * candidate to boost the disk throughput. + */ + budget = min(budget * 4, bfqd->bfq_max_budget); + break; + case BFQ_BFQQ_NO_MORE_REQUESTS: + /* + * For queues that expire for this reason, it + * is particularly important to keep the + * budget close to the actual service they + * need. Doing so reduces the timestamp + * misalignment problem described in the + * comments in the body of + * __bfq_activate_entity. In fact, suppose + * that a queue systematically expires for + * BFQ_BFQQ_NO_MORE_REQUESTS and presents a + * new request in time to enjoy timestamp + * back-shifting. The larger the budget of the + * queue is with respect to the service the + * queue actually requests in each service + * slot, the more times the queue can be + * reactivated with the same virtual finish + * time. It follows that, even if this finish + * time is pushed to the system virtual time + * to reduce the consequent timestamp + * misalignment, the queue unjustly enjoys for + * many re-activations a lower finish time + * than all newly activated queues. + * + * The service needed by bfqq is measured + * quite precisely by bfqq->entity.service. + * Since bfqq does not enjoy device idling, + * bfqq->entity.service is equal to the number + * of sectors that the process associated with + * bfqq requested to read/write before waiting + * for request completions, or blocking for + * other reasons. + */ + budget = max_t(int, bfqq->entity.service, min_budget); + break; + default: + return; + } + } else if (!bfq_bfqq_sync(bfqq)) + /* + * Async queues get always the maximum possible + * budget, as for them we do not care about latency + * (in addition, their ability to dispatch is limited + * by the charging factor). + */ + budget = bfqd->bfq_max_budget; + + bfqq->max_budget = budget; + + if (bfqd->budgets_assigned >= bfq_stats_min_budgets && + !bfqd->bfq_user_max_budget) + bfqq->max_budget = min(bfqq->max_budget, bfqd->bfq_max_budget); + + /* + * If there is still backlog, then assign a new budget, making + * sure that it is large enough for the next request. Since + * the finish time of bfqq must be kept in sync with the + * budget, be sure to call __bfq_bfqq_expire() *after* this + * update. + * + * If there is no backlog, then no need to update the budget; + * it will be updated on the arrival of a new request. + */ + next_rq = bfqq->next_rq; + if (next_rq) { + BUG_ON(reason == BFQ_BFQQ_TOO_IDLE || + reason == BFQ_BFQQ_NO_MORE_REQUESTS); + bfqq->entity.budget = max_t(unsigned long, bfqq->max_budget, + bfq_serv_to_charge(next_rq, bfqq)); + BUG_ON(!bfq_bfqq_busy(bfqq)); + BUG_ON(RB_EMPTY_ROOT(&bfqq->sort_list)); + } + + bfq_log_bfqq(bfqd, bfqq, "head sect: %u, new budget %d", + next_rq ? blk_rq_sectors(next_rq) : 0, + bfqq->entity.budget); +} + +/* + * Return true if the process associated with bfqq is "slow". The slow + * flag is used, in addition to the budget timeout, to reduce the + * amount of service provided to seeky processes, and thus reduce + * their chances to lower the throughput. More details in the comments + * on the function bfq_bfqq_expire(). + * + * An important observation is in order: as discussed in the comments + * on the function bfq_update_peak_rate(), with devices with internal + * queues, it is hard if ever possible to know when and for how long + * an I/O request is processed by the device (apart from the trivial + * I/O pattern where a new request is dispatched only after the + * previous one has been completed). This makes it hard to evaluate + * the real rate at which the I/O requests of each bfq_queue are + * served. In fact, for an I/O scheduler like BFQ, serving a + * bfq_queue means just dispatching its requests during its service + * slot (i.e., until the budget of the queue is exhausted, or the + * queue remains idle, or, finally, a timeout fires). But, during the + * service slot of a bfq_queue, around 100 ms at most, the device may + * be even still processing requests of bfq_queues served in previous + * service slots. On the opposite end, the requests of the in-service + * bfq_queue may be completed after the service slot of the queue + * finishes. + * + * Anyway, unless more sophisticated solutions are used + * (where possible), the sum of the sizes of the requests dispatched + * during the service slot of a bfq_queue is probably the only + * approximation available for the service received by the bfq_queue + * during its service slot. And this sum is the quantity used in this + * function to evaluate the I/O speed of a process. + */ +static bool bfq_bfqq_is_slow(struct bfq_data *bfqd, struct bfq_queue *bfqq, + bool compensate, enum bfqq_expiration reason, + unsigned long *delta_ms) +{ + ktime_t delta_ktime; + u32 delta_usecs; + bool slow = BFQQ_SEEKY(bfqq); /* if delta too short, use seekyness */ + + if (!bfq_bfqq_sync(bfqq)) + return false; + + if (compensate) + delta_ktime = bfqd->last_idling_start; + else + delta_ktime = ktime_get(); + delta_ktime = ktime_sub(delta_ktime, bfqd->last_budget_start); + delta_usecs = ktime_to_us(delta_ktime); + + /* don't use too short time intervals */ + if (delta_usecs < 1000) { + if (blk_queue_nonrot(bfqd->queue)) + /* + * give same worst-case guarantees as idling + * for seeky + */ + *delta_ms = BFQ_MIN_TT / NSEC_PER_MSEC; + else /* charge at least one seek */ + *delta_ms = bfq_slice_idle / NSEC_PER_MSEC; + + bfq_log(bfqd, "too short %u", delta_usecs); + + return slow; + } + + *delta_ms = delta_usecs / USEC_PER_MSEC; + + /* + * Use only long (> 20ms) intervals to filter out excessive + * spikes in service rate estimation. + */ + if (delta_usecs > 20000) { + /* + * Caveat for rotational devices: processes doing I/O + * in the slower disk zones tend to be slow(er) even + * if not seeky. In this respect, the estimated peak + * rate is likely to be an average over the disk + * surface. Accordingly, to not be too harsh with + * unlucky processes, a process is deemed slow only if + * its rate has been lower than half of the estimated + * peak rate. + */ + slow = bfqq->entity.service < bfqd->bfq_max_budget / 2; + bfq_log(bfqd, "relative rate %d/%d", + bfqq->entity.service, bfqd->bfq_max_budget); + } + + bfq_log_bfqq(bfqd, bfqq, "slow %d", slow); + + return slow; +} + +/* + * To be deemed as soft real-time, an application must meet two + * requirements. First, the application must not require an average + * bandwidth higher than the approximate bandwidth required to playback or + * record a compressed high-definition video. + * The next function is invoked on the completion of the last request of a + * batch, to compute the next-start time instant, soft_rt_next_start, such + * that, if the next request of the application does not arrive before + * soft_rt_next_start, then the above requirement on the bandwidth is met. + * + * The second requirement is that the request pattern of the application is + * isochronous, i.e., that, after issuing a request or a batch of requests, + * the application stops issuing new requests until all its pending requests + * have been completed. After that, the application may issue a new batch, + * and so on. + * For this reason the next function is invoked to compute + * soft_rt_next_start only for applications that meet this requirement, + * whereas soft_rt_next_start is set to infinity for applications that do + * not. + * + * Unfortunately, even a greedy (i.e., I/O-bound) application may + * happen to meet, occasionally or systematically, both the above + * bandwidth and isochrony requirements. This may happen at least in + * the following circumstances. First, if the CPU load is high. The + * application may stop issuing requests while the CPUs are busy + * serving other processes, then restart, then stop again for a while, + * and so on. The other circumstances are related to the storage + * device: the storage device is highly loaded or reaches a low-enough + * throughput with the I/O of the application (e.g., because the I/O + * is random and/or the device is slow). In all these cases, the + * I/O of the application may be simply slowed down enough to meet + * the bandwidth and isochrony requirements. To reduce the probability + * that greedy applications are deemed as soft real-time in these + * corner cases, a further rule is used in the computation of + * soft_rt_next_start: the return value of this function is forced to + * be higher than the maximum between the following two quantities. + * + * (a) Current time plus: (1) the maximum time for which the arrival + * of a request is waited for when a sync queue becomes idle, + * namely bfqd->bfq_slice_idle, and (2) a few extra jiffies. We + * postpone for a moment the reason for adding a few extra + * jiffies; we get back to it after next item (b). Lower-bounding + * the return value of this function with the current time plus + * bfqd->bfq_slice_idle tends to filter out greedy applications, + * because the latter issue their next request as soon as possible + * after the last one has been completed. In contrast, a soft + * real-time application spends some time processing data, after a + * batch of its requests has been completed. + * + * (b) Current value of bfqq->soft_rt_next_start. As pointed out + * above, greedy applications may happen to meet both the + * bandwidth and isochrony requirements under heavy CPU or + * storage-device load. In more detail, in these scenarios, these + * applications happen, only for limited time periods, to do I/O + * slowly enough to meet all the requirements described so far, + * including the filtering in above item (a). These slow-speed + * time intervals are usually interspersed between other time + * intervals during which these applications do I/O at a very high + * speed. Fortunately, exactly because of the high speed of the + * I/O in the high-speed intervals, the values returned by this + * function happen to be so high, near the end of any such + * high-speed interval, to be likely to fall *after* the end of + * the low-speed time interval that follows. These high values are + * stored in bfqq->soft_rt_next_start after each invocation of + * this function. As a consequence, if the last value of + * bfqq->soft_rt_next_start is constantly used to lower-bound the + * next value that this function may return, then, from the very + * beginning of a low-speed interval, bfqq->soft_rt_next_start is + * likely to be constantly kept so high that any I/O request + * issued during the low-speed interval is considered as arriving + * to soon for the application to be deemed as soft + * real-time. Then, in the high-speed interval that follows, the + * application will not be deemed as soft real-time, just because + * it will do I/O at a high speed. And so on. + * + * Getting back to the filtering in item (a), in the following two + * cases this filtering might be easily passed by a greedy + * application, if the reference quantity was just + * bfqd->bfq_slice_idle: + * 1) HZ is so low that the duration of a jiffy is comparable to or + * higher than bfqd->bfq_slice_idle. This happens, e.g., on slow + * devices with HZ=100. The time granularity may be so coarse + * that the approximation, in jiffies, of bfqd->bfq_slice_idle + * is rather lower than the exact value. + * 2) jiffies, instead of increasing at a constant rate, may stop increasing + * for a while, then suddenly 'jump' by several units to recover the lost + * increments. This seems to happen, e.g., inside virtual machines. + * To address this issue, in the filtering in (a) we do not use as a + * reference time interval just bfqd->bfq_slice_idle, but + * bfqd->bfq_slice_idle plus a few jiffies. In particular, we add the + * minimum number of jiffies for which the filter seems to be quite + * precise also in embedded systems and KVM/QEMU virtual machines. + */ +static unsigned long bfq_bfqq_softrt_next_start(struct bfq_data *bfqd, + struct bfq_queue *bfqq) +{ + bfq_log_bfqq(bfqd, bfqq, +"service_blkg %lu soft_rate %u sects/sec interval %u", + bfqq->service_from_backlogged, + bfqd->bfq_wr_max_softrt_rate, + jiffies_to_msecs(HZ * bfqq->service_from_backlogged / + bfqd->bfq_wr_max_softrt_rate)); + + return max3(bfqq->soft_rt_next_start, + bfqq->last_idle_bklogged + + HZ * bfqq->service_from_backlogged / + bfqd->bfq_wr_max_softrt_rate, + jiffies + nsecs_to_jiffies(bfqq->bfqd->bfq_slice_idle) + 4); +} + +static bool bfq_bfqq_injectable(struct bfq_queue *bfqq) +{ + return BFQQ_SEEKY(bfqq) && bfqq->wr_coeff == 1 && + blk_queue_nonrot(bfqq->bfqd->queue) && + bfqq->bfqd->hw_tag; +} + +/** + * bfq_bfqq_expire - expire a queue. + * @bfqd: device owning the queue. + * @bfqq: the queue to expire. + * @compensate: if true, compensate for the time spent idling. + * @reason: the reason causing the expiration. + * + * If the process associated with bfqq does slow I/O (e.g., because it + * issues random requests), we charge bfqq with the time it has been + * in service instead of the service it has received (see + * bfq_bfqq_charge_time for details on how this goal is achieved). As + * a consequence, bfqq will typically get higher timestamps upon + * reactivation, and hence it will be rescheduled as if it had + * received more service than what it has actually received. In the + * end, bfqq receives less service in proportion to how slowly its + * associated process consumes its budgets (and hence how seriously it + * tends to lower the throughput). In addition, this time-charging + * strategy guarantees time fairness among slow processes. In + * contrast, if the process associated with bfqq is not slow, we + * charge bfqq exactly with the service it has received. + * + * Charging time to the first type of queues and the exact service to + * the other has the effect of using the WF2Q+ policy to schedule the + * former on a timeslice basis, without violating service domain + * guarantees among the latter. + */ +static void bfq_bfqq_expire(struct bfq_data *bfqd, + struct bfq_queue *bfqq, + bool compensate, + enum bfqq_expiration reason) +{ + bool slow; + unsigned long delta = 0; + struct bfq_entity *entity = &bfqq->entity; + int ref; + + BUG_ON(bfqq != bfqd->in_service_queue); + + /* + * Check whether the process is slow (see bfq_bfqq_is_slow). + */ + slow = bfq_bfqq_is_slow(bfqd, bfqq, compensate, reason, &delta); + + /* + * As above explained, charge slow (typically seeky) and + * timed-out queues with the time and not the service + * received, to favor sequential workloads. + * + * Processes doing I/O in the slower disk zones will tend to + * be slow(er) even if not seeky. Therefore, since the + * estimated peak rate is actually an average over the disk + * surface, these processes may timeout just for bad luck. To + * avoid punishing them, do not charge time to processes that + * succeeded in consuming at least 2/3 of their budget. This + * allows BFQ to preserve enough elasticity to still perform + * bandwidth, and not time, distribution with little unlucky + * or quasi-sequential processes. + */ + if (bfqq->wr_coeff == 1 && + (slow || + (reason == BFQ_BFQQ_BUDGET_TIMEOUT && + bfq_bfqq_budget_left(bfqq) >= entity->budget / 3))) + bfq_bfqq_charge_time(bfqd, bfqq, delta); + + BUG_ON(bfqq->entity.budget < bfqq->entity.service); + + if (reason == BFQ_BFQQ_TOO_IDLE && + entity->service <= 2 * entity->budget / 10) + bfq_clear_bfqq_IO_bound(bfqq); + + if (bfqd->low_latency && bfqq->wr_coeff == 1) + bfqq->last_wr_start_finish = jiffies; + + if (bfqd->low_latency && bfqd->bfq_wr_max_softrt_rate > 0 && + RB_EMPTY_ROOT(&bfqq->sort_list)) { + /* + * If we get here, and there are no outstanding + * requests, then the request pattern is isochronous + * (see the comments on the function + * bfq_bfqq_softrt_next_start()). Thus we can compute + * soft_rt_next_start. If, instead, the queue still + * has outstanding requests, then we have to wait for + * the completion of all the outstanding requests to + * discover whether the request pattern is actually + * isochronous. + */ + BUG_ON(bfqd->busy_queues < 1); + if (bfqq->dispatched == 0) { + bfqq->soft_rt_next_start = + bfq_bfqq_softrt_next_start(bfqd, bfqq); + bfq_log_bfqq(bfqd, bfqq, "new soft_rt_next %lu", + bfqq->soft_rt_next_start); + } else { + /* + * Schedule an update of soft_rt_next_start to when + * the task may be discovered to be isochronous. + */ + bfq_mark_bfqq_softrt_update(bfqq); + } + } + + bfq_log_bfqq(bfqd, bfqq, + "expire (%s, slow %d, num_disp %d, short %d, weight %d, serv %d/%d)", + reason_name[reason], slow, bfqq->dispatched, + bfq_bfqq_has_short_ttime(bfqq), entity->weight, + entity->service, entity->budget); + + /* + * Increase, decrease or leave budget unchanged according to + * reason. + */ + BUG_ON(bfqq->entity.budget < bfqq->entity.service); + __bfq_bfqq_recalc_budget(bfqd, bfqq, reason); + BUG_ON(bfqq->next_rq == NULL && + bfqq->entity.budget < bfqq->entity.service); + ref = bfqq->ref; + __bfq_bfqq_expire(bfqd, bfqq); + + if (ref == 1) /* bfqq is gone, no more actions on it */ + return; + + BUG_ON(ref > 1 && + !bfq_bfqq_busy(bfqq) && reason == BFQ_BFQQ_BUDGET_EXHAUSTED && + !bfq_class_idle(bfqq)); + + bfqq->injected_service = 0; + + /* mark bfqq as waiting a request only if a bic still points to it */ + if (!bfq_bfqq_busy(bfqq) && + reason != BFQ_BFQQ_BUDGET_TIMEOUT && + reason != BFQ_BFQQ_BUDGET_EXHAUSTED) { + BUG_ON(!RB_EMPTY_ROOT(&bfqq->sort_list)); + BUG_ON(bfqq->next_rq); + bfq_mark_bfqq_non_blocking_wait_rq(bfqq); + /* + * Not setting service to 0, because, if the next rq + * arrives in time, the queue will go on receiving + * service with this same budget (as if it never expired) + */ + } else { + entity->service = 0; + bfq_log_bfqq(bfqd, bfqq, "[%s] resetting service", __func__); + } + + /* + * Reset the received-service counter for every parent entity. + * Differently from what happens with bfqq->entity.service, + * the resetting of this counter never needs to be postponed + * for parent entities. In fact, in case bfqq may have a + * chance to go on being served using the last, partially + * consumed budget, bfqq->entity.service needs to be kept, + * because if bfqq then actually goes on being served using + * the same budget, the last value of bfqq->entity.service is + * needed to properly decrement bfqq->entity.budget by the + * portion already consumed. In contrast, it is not necessary + * to keep entity->service for parent entities too, because + * the bubble up of the new value of bfqq->entity.budget will + * make sure that the budgets of parent entities are correct, + * even in case bfqq and thus parent entities go on receiving + * service with the same budget. + */ + entity = entity->parent; + for_each_entity(entity) + entity->service = 0; +} + +/* + * Budget timeout is not implemented through a dedicated timer, but + * just checked on request arrivals and completions, as well as on + * idle timer expirations. + */ +static bool bfq_bfqq_budget_timeout(struct bfq_queue *bfqq) +{ + return time_is_before_eq_jiffies(bfqq->budget_timeout); +} + +/* + * If we expire a queue that is actively waiting (i.e., with the + * device idled) for the arrival of a new request, then we may incur + * the timestamp misalignment problem described in the body of the + * function __bfq_activate_entity. Hence we return true only if this + * condition does not hold, or if the queue is slow enough to deserve + * only to be kicked off for preserving a high throughput. + */ +static bool bfq_may_expire_for_budg_timeout(struct bfq_queue *bfqq) +{ + bfq_log_bfqq(bfqq->bfqd, bfqq, + "wait_request %d left %d timeout %d", + bfq_bfqq_wait_request(bfqq), + bfq_bfqq_budget_left(bfqq) >= bfqq->entity.budget / 3, + bfq_bfqq_budget_timeout(bfqq)); + + return (!bfq_bfqq_wait_request(bfqq) || + bfq_bfqq_budget_left(bfqq) >= bfqq->entity.budget / 3) + && + bfq_bfqq_budget_timeout(bfqq); +} + +/* + * For a queue that becomes empty, device idling is allowed only if + * this function returns true for that queue. As a consequence, since + * device idling plays a critical role for both throughput boosting + * and service guarantees, the return value of this function plays a + * critical role as well. + * + * In a nutshell, this function returns true only if idling is + * beneficial for throughput or, even if detrimental for throughput, + * idling is however necessary to preserve service guarantees (low + * latency, desired throughput distribution, ...). In particular, on + * NCQ-capable devices, this function tries to return false, so as to + * help keep the drives' internal queues full, whenever this helps the + * device boost the throughput without causing any service-guarantee + * issue. + * + * In more detail, the return value of this function is obtained by, + * first, computing a number of boolean variables that take into + * account throughput and service-guarantee issues, and, then, + * combining these variables in a logical expression. Most of the + * issues taken into account are not trivial. We discuss these issues + * while introducing the variables. + */ +static bool bfq_better_to_idle(struct bfq_queue *bfqq) +{ + struct bfq_data *bfqd = bfqq->bfqd; + bool rot_without_queueing = + !blk_queue_nonrot(bfqd->queue) && !bfqd->hw_tag, + bfqq_sequential_and_IO_bound, + idling_boosts_thr, idling_boosts_thr_without_issues, + idling_needed_for_service_guarantees, + asymmetric_scenario; + + if (bfqd->strict_guarantees) + return true; + + /* + * Idling is performed only if slice_idle > 0. In addition, we + * do not idle if + * (a) bfqq is async + * (b) bfqq is in the idle io prio class: in this case we do + * not idle because we want to minimize the bandwidth that + * queues in this class can steal to higher-priority queues + */ + if (bfqd->bfq_slice_idle == 0 || !bfq_bfqq_sync(bfqq) || + bfq_class_idle(bfqq)) + return false; + + bfqq_sequential_and_IO_bound = !BFQQ_SEEKY(bfqq) && + bfq_bfqq_IO_bound(bfqq) && bfq_bfqq_has_short_ttime(bfqq); + /* + * The next variable takes into account the cases where idling + * boosts the throughput. + * + * The value of the variable is computed considering, first, that + * idling is virtually always beneficial for the throughput if: + * (a) the device is not NCQ-capable and rotational, or + * (b) regardless of the presence of NCQ, the device is rotational and + * the request pattern for bfqq is I/O-bound and sequential, or + * (c) regardless of whether it is rotational, the device is + * not NCQ-capable and the request pattern for bfqq is + * I/O-bound and sequential. + * + * Secondly, and in contrast to the above item (b), idling an + * NCQ-capable flash-based device would not boost the + * throughput even with sequential I/O; rather it would lower + * the throughput in proportion to how fast the device + * is. Accordingly, the next variable is true if any of the + * above conditions (a), (b) or (c) is true, and, in + * particular, happens to be false if bfqd is an NCQ-capable + * flash-based device. + */ + idling_boosts_thr = rot_without_queueing || + ((!blk_queue_nonrot(bfqd->queue) || !bfqd->hw_tag) && + bfqq_sequential_and_IO_bound); + + /* + * The value of the next variable, + * idling_boosts_thr_without_issues, is equal to that of + * idling_boosts_thr, unless a special case holds. In this + * special case, described below, idling may cause problems to + * weight-raised queues. + * + * When the request pool is saturated (e.g., in the presence + * of write hogs), if the processes associated with + * non-weight-raised queues ask for requests at a lower rate, + * then processes associated with weight-raised queues have a + * higher probability to get a request from the pool + * immediately (or at least soon) when they need one. Thus + * they have a higher probability to actually get a fraction + * of the device throughput proportional to their high + * weight. This is especially true with NCQ-capable drives, + * which enqueue several requests in advance, and further + * reorder internally-queued requests. + * + * For this reason, we force to false the value of + * idling_boosts_thr_without_issues if there are weight-raised + * busy queues. In this case, and if bfqq is not weight-raised, + * this guarantees that the device is not idled for bfqq (if, + * instead, bfqq is weight-raised, then idling will be + * guaranteed by another variable, see below). Combined with + * the timestamping rules of BFQ (see [1] for details), this + * behavior causes bfqq, and hence any sync non-weight-raised + * queue, to get a lower number of requests served, and thus + * to ask for a lower number of requests from the request + * pool, before the busy weight-raised queues get served + * again. This often mitigates starvation problems in the + * presence of heavy write workloads and NCQ, thereby + * guaranteeing a higher application and system responsiveness + * in these hostile scenarios. + */ + idling_boosts_thr_without_issues = idling_boosts_thr && + bfqd->wr_busy_queues == 0; + + /* + * There is then a case where idling must be performed not + * for throughput concerns, but to preserve service + * guarantees. + * + * To introduce this case, we can note that allowing the drive + * to enqueue more than one request at a time, and hence + * delegating de facto final scheduling decisions to the + * drive's internal scheduler, entails loss of control on the + * actual request service order. In particular, the critical + * situation is when requests from different processes happen + * to be present, at the same time, in the internal queue(s) + * of the drive. In such a situation, the drive, by deciding + * the service order of the internally-queued requests, does + * determine also the actual throughput distribution among + * these processes. But the drive typically has no notion or + * concern about per-process throughput distribution, and + * makes its decisions only on a per-request basis. Therefore, + * the service distribution enforced by the drive's internal + * scheduler is likely to coincide with the desired + * device-throughput distribution only in a completely + * symmetric scenario where: + * (i) each of these processes must get the same throughput as + * the others; + * (ii) all these processes have the same I/O pattern + * (either sequential or random). + * In fact, in such a scenario, the drive will tend to treat + * the requests of each of these processes in about the same + * way as the requests of the others, and thus to provide + * each of these processes with about the same throughput + * (which is exactly the desired throughput distribution). In + * contrast, in any asymmetric scenario, device idling is + * certainly needed to guarantee that bfqq receives its + * assigned fraction of the device throughput (see [1] for + * details). + * + * We address this issue by controlling, actually, only the + * symmetry sub-condition (i), i.e., provided that + * sub-condition (i) holds, idling is not performed, + * regardless of whether sub-condition (ii) holds. In other + * words, only if sub-condition (i) holds, then idling is + * allowed, and the device tends to be prevented from queueing + * many requests, possibly of several processes. The reason + * for not controlling also sub-condition (ii) is that we + * exploit preemption to preserve guarantees in case of + * symmetric scenarios, even if (ii) does not hold, as + * explained in the next two paragraphs. + * + * Even if a queue, say Q, is expired when it remains idle, Q + * can still preempt the new in-service queue if the next + * request of Q arrives soon (see the comments on + * bfq_bfqq_update_budg_for_activation). If all queues and + * groups have the same weight, this form of preemption, + * combined with the hole-recovery heuristic described in the + * comments on function bfq_bfqq_update_budg_for_activation, + * are enough to preserve a correct bandwidth distribution in + * the mid term, even without idling. In fact, even if not + * idling allows the internal queues of the device to contain + * many requests, and thus to reorder requests, we can rather + * safely assume that the internal scheduler still preserves a + * minimum of mid-term fairness. The motivation for using + * preemption instead of idling is that, by not idling, + * service guarantees are preserved without minimally + * sacrificing throughput. In other words, both a high + * throughput and its desired distribution are obtained. + * + * More precisely, this preemption-based, idleless approach + * provides fairness in terms of IOPS, and not sectors per + * second. This can be seen with a simple example. Suppose + * that there are two queues with the same weight, but that + * the first queue receives requests of 8 sectors, while the + * second queue receives requests of 1024 sectors. In + * addition, suppose that each of the two queues contains at + * most one request at a time, which implies that each queue + * always remains idle after it is served. Finally, after + * remaining idle, each queue receives very quickly a new + * request. It follows that the two queues are served + * alternatively, preempting each other if needed. This + * implies that, although both queues have the same weight, + * the queue with large requests receives a service that is + * 1024/8 times as high as the service received by the other + * queue. + * + * On the other hand, device idling is performed, and thus + * pure sector-domain guarantees are provided, for the + * following queues, which are likely to need stronger + * throughput guarantees: weight-raised queues, and queues + * with a higher weight than other queues. When such queues + * are active, sub-condition (i) is false, which triggers + * device idling. + * + * According to the above considerations, the next variable is + * true (only) if sub-condition (i) holds. To compute the + * value of this variable, we not only use the return value of + * the function bfq_symmetric_scenario(), but also check + * whether bfqq is being weight-raised, because + * bfq_symmetric_scenario() does not take into account also + * weight-raised queues (see comments on + * bfq_weights_tree_add()). + * + * As a side note, it is worth considering that the above + * device-idling countermeasures may however fail in the + * following unlucky scenario: if idling is (correctly) + * disabled in a time period during which all symmetry + * sub-conditions hold, and hence the device is allowed to + * enqueue many requests, but at some later point in time some + * sub-condition stops to hold, then it may become impossible + * to let requests be served in the desired order until all + * the requests already queued in the device have been served. + */ + asymmetric_scenario = bfqq->wr_coeff > 1 || + !bfq_symmetric_scenario(bfqd); + + /* + * Finally, there is a case where maximizing throughput is the + * best choice even if it may cause unfairness toward + * bfqq. Such a case is when bfqq became active in a burst of + * queue activations. Queues that became active during a large + * burst benefit only from throughput, as discussed in the + * comments on bfq_handle_burst. Thus, if bfqq became active + * in a burst and not idling the device maximizes throughput, + * then the device must no be idled, because not idling the + * device provides bfqq and all other queues in the burst with + * maximum benefit. Combining this and the above case, we can + * now establish when idling is actually needed to preserve + * service guarantees. + */ + idling_needed_for_service_guarantees = + asymmetric_scenario && !bfq_bfqq_in_large_burst(bfqq); + + /* + * We have now all the components we need to compute the + * return value of the function, which is true only if idling + * either boosts the throughput (without issues), or is + * necessary to preserve service guarantees. + */ + bfq_log_bfqq(bfqd, bfqq, "sync %d idling_boosts_thr %d", + bfq_bfqq_sync(bfqq), idling_boosts_thr); + + bfq_log_bfqq(bfqd, bfqq, + "wr_busy %d boosts %d IO-bound %d guar %d", + bfqd->wr_busy_queues, + idling_boosts_thr_without_issues, + bfq_bfqq_IO_bound(bfqq), + idling_needed_for_service_guarantees); + + return idling_boosts_thr_without_issues || + idling_needed_for_service_guarantees; +} + +/* + * If the in-service queue is empty but the function bfq_better_to_idle + * returns true, then: + * 1) the queue must remain in service and cannot be expired, and + * 2) the device must be idled to wait for the possible arrival of a new + * request for the queue. + * See the comments on the function bfq_better_to_idle for the reasons + * why performing device idling is the best choice to boost the throughput + * and preserve service guarantees when bfq_better_to_idle itself + * returns true. + */ +static bool bfq_bfqq_must_idle(struct bfq_queue *bfqq) +{ + return RB_EMPTY_ROOT(&bfqq->sort_list) && bfq_better_to_idle(bfqq); +} + +static struct bfq_queue *bfq_choose_bfqq_for_injection(struct bfq_data *bfqd) +{ + struct bfq_queue *bfqq; + + /* + * A linear search; but, with a high probability, very few + * steps are needed to find a candidate queue, i.e., a queue + * with enough budget left for its next request. In fact: + * - BFQ dynamically updates the budget of every queue so as + * to accomodate the expected backlog of the queue; + * - if a queue gets all its requests dispatched as injected + * service, then the queue is removed from the active list + * (and re-added only if it gets new requests, but with + * enough budget for its new backlog). + */ + list_for_each_entry(bfqq, &bfqd->active_list, bfqq_list) + if (!RB_EMPTY_ROOT(&bfqq->sort_list) && + bfq_serv_to_charge(bfqq->next_rq, bfqq) <= + bfq_bfqq_budget_left(bfqq)) { + bfq_log_bfqq(bfqd, bfqq, "returned this queue"); + return bfqq; + } + + bfq_log(bfqd, "no queue found"); + return NULL; +} + +/* + * Select a queue for service. If we have a current queue in service, + * check whether to continue servicing it, or retrieve and set a new one. + */ +static struct bfq_queue *bfq_select_queue(struct bfq_data *bfqd) +{ + struct bfq_queue *bfqq; + struct request *next_rq; + enum bfqq_expiration reason = BFQ_BFQQ_BUDGET_TIMEOUT; + + bfqq = bfqd->in_service_queue; + if (!bfqq) + goto new_queue; + + bfq_log_bfqq(bfqd, bfqq, "already in-service queue"); + + /* + * Do not expire bfqq for budget timeout if bfqq may be about + * to enjoy device idling. The reason why, in this case, we + * prevent bfqq from expiring is the same as in the comments + * on the case where bfq_bfqq_must_idle() returns true, in + * bfq_completed_request(). + */ + if (bfq_may_expire_for_budg_timeout(bfqq) && + !bfq_bfqq_must_idle(bfqq)) + goto expire; + +check_queue: + /* + * This loop is rarely executed more than once. Even when it + * happens, it is much more convenient to re-execute this loop + * than to return NULL and trigger a new dispatch to get a + * request served. + */ + next_rq = bfqq->next_rq; + /* + * If bfqq has requests queued and it has enough budget left to + * serve them, keep the queue, otherwise expire it. + */ + if (next_rq) { + BUG_ON(RB_EMPTY_ROOT(&bfqq->sort_list)); + + if (bfq_serv_to_charge(next_rq, bfqq) > + bfq_bfqq_budget_left(bfqq)) { + /* + * Expire the queue for budget exhaustion, + * which makes sure that the next budget is + * enough to serve the next request, even if + * it comes from the fifo expired path. + */ + reason = BFQ_BFQQ_BUDGET_EXHAUSTED; + goto expire; + } else { + /* + * The idle timer may be pending because we may + * not disable disk idling even when a new request + * arrives. + */ + if (bfq_bfqq_wait_request(bfqq)) { + /* + * If we get here: 1) at least a new request + * has arrived but we have not disabled the + * timer because the request was too small, + * 2) then the block layer has unplugged + * the device, causing the dispatch to be + * invoked. + * + * Since the device is unplugged, now the + * requests are probably large enough to + * provide a reasonable throughput. + * So we disable idling. + */ + bfq_clear_bfqq_wait_request(bfqq); + hrtimer_try_to_cancel(&bfqd->idle_slice_timer); + } + goto keep_queue; + } + } + + /* + * No requests pending. However, if the in-service queue is idling + * for a new request, or has requests waiting for a completion and + * may idle after their completion, then keep it anyway. + * + * Yet, to boost throughput, inject service from other queues if + * possible. + */ + if (bfq_bfqq_wait_request(bfqq) || + (bfqq->dispatched != 0 && bfq_better_to_idle(bfqq))) { + if (bfq_bfqq_injectable(bfqq) && + bfqq->injected_service * bfqq->inject_coeff < + bfqq->entity.service * 10) { + bfq_log_bfqq(bfqd, bfqq, "looking for queue for injection"); + bfqq = bfq_choose_bfqq_for_injection(bfqd); + } else { + if (BFQQ_SEEKY(bfqq)) + bfq_log_bfqq(bfqd, bfqq, + "injection saturated %d * %d >= %d * 10", + bfqq->injected_service, bfqq->inject_coeff, + bfqq->entity.service); + bfqq = NULL; + } + goto keep_queue; + } + + reason = BFQ_BFQQ_NO_MORE_REQUESTS; +expire: + bfq_bfqq_expire(bfqd, bfqq, false, reason); +new_queue: + bfqq = bfq_set_in_service_queue(bfqd); + if (bfqq) { + bfq_log_bfqq(bfqd, bfqq, "checking new queue"); + goto check_queue; + } +keep_queue: + if (bfqq) + bfq_log_bfqq(bfqd, bfqq, "returned this queue"); + else + bfq_log(bfqd, "no queue returned"); + + return bfqq; +} + +static void bfq_update_wr_data(struct bfq_data *bfqd, struct bfq_queue *bfqq) +{ + struct bfq_entity *entity = &bfqq->entity; + + if (bfqq->wr_coeff > 1) { /* queue is being weight-raised */ + BUG_ON(bfqq->wr_cur_max_time == bfqd->bfq_wr_rt_max_time && + time_is_after_jiffies(bfqq->last_wr_start_finish)); + + bfq_log_bfqq(bfqd, bfqq, + "raising period dur %u/%u msec, old coeff %u, w %d(%d)", + jiffies_to_msecs(jiffies - bfqq->last_wr_start_finish), + jiffies_to_msecs(bfqq->wr_cur_max_time), + bfqq->wr_coeff, + bfqq->entity.weight, bfqq->entity.orig_weight); + + BUG_ON(bfqq != bfqd->in_service_queue && entity->weight != + entity->orig_weight * bfqq->wr_coeff); + if (entity->prio_changed) + bfq_log_bfqq(bfqd, bfqq, "WARN: pending prio change"); + + /* + * If the queue was activated in a burst, or too much + * time has elapsed from the beginning of this + * weight-raising period, then end weight raising. + */ + if (bfq_bfqq_in_large_burst(bfqq)) + bfq_bfqq_end_wr(bfqq); + else if (time_is_before_jiffies(bfqq->last_wr_start_finish + + bfqq->wr_cur_max_time)) { + if (bfqq->wr_cur_max_time != bfqd->bfq_wr_rt_max_time || + time_is_before_jiffies(bfqq->wr_start_at_switch_to_srt + + bfq_wr_duration(bfqd))) + bfq_bfqq_end_wr(bfqq); + else { + switch_back_to_interactive_wr(bfqq, bfqd); + BUG_ON(time_is_after_jiffies( + bfqq->last_wr_start_finish)); + bfqq->entity.prio_changed = 1; + bfq_log_bfqq(bfqd, bfqq, + "back to interactive wr"); + } + } + if (bfqq->wr_coeff > 1 && + bfqq->wr_cur_max_time != bfqd->bfq_wr_rt_max_time && + bfqq->service_from_wr > max_service_from_wr) { + /* see comments on max_service_from_wr */ + bfq_bfqq_end_wr(bfqq); + bfq_log_bfqq(bfqd, bfqq, + "too much service"); + } + } + /* + * To improve latency (for this or other queues), immediately + * update weight both if it must be raised and if it must be + * lowered. Since, entity may be on some active tree here, and + * might have a pending change of its ioprio class, invoke + * next function with the last parameter unset (see the + * comments on the function). + */ + if ((entity->weight > entity->orig_weight) != (bfqq->wr_coeff > 1)) + __bfq_entity_update_weight_prio(bfq_entity_service_tree(entity), + entity, false); +} + +/* + * Dispatch next request from bfqq. + */ +static struct request *bfq_dispatch_rq_from_bfqq(struct bfq_data *bfqd, + struct bfq_queue *bfqq) +{ + struct request *rq = bfqq->next_rq; + unsigned long service_to_charge; + + BUG_ON(RB_EMPTY_ROOT(&bfqq->sort_list)); + BUG_ON(!rq); + service_to_charge = bfq_serv_to_charge(rq, bfqq); + + BUG_ON(service_to_charge > bfq_bfqq_budget_left(bfqq)); + + BUG_ON(bfqq->entity.budget < bfqq->entity.service); + + bfq_bfqq_served(bfqq, service_to_charge); + + BUG_ON(bfqq->entity.budget < bfqq->entity.service); + + bfq_dispatch_remove(bfqd->queue, rq); + + bfq_log_bfqq(bfqd, bfqq, + "dispatched %u sec req (%llu), budg left %d, new disp_nr %d", + blk_rq_sectors(rq), + (unsigned long long) blk_rq_pos(rq), + bfq_bfqq_budget_left(bfqq), + bfqq->dispatched); + + if (bfqq != bfqd->in_service_queue) { + if (likely(bfqd->in_service_queue)) { + bfqd->in_service_queue->injected_service += + bfq_serv_to_charge(rq, bfqq); + bfq_log_bfqq(bfqd, bfqd->in_service_queue, + "injected_service increased to %d", + bfqd->in_service_queue->injected_service); + } + goto return_rq; + } + + /* + * If weight raising has to terminate for bfqq, then next + * function causes an immediate update of bfqq's weight, + * without waiting for next activation. As a consequence, on + * expiration, bfqq will be timestamped as if has never been + * weight-raised during this service slot, even if it has + * received part or even most of the service as a + * weight-raised queue. This inflates bfqq's timestamps, which + * is beneficial, as bfqq is then more willing to leave the + * device immediately to possible other weight-raised queues. + */ + bfq_update_wr_data(bfqd, bfqq); + + /* + * Expire bfqq, pretending that its budget expired, if bfqq + * belongs to CLASS_IDLE and other queues are waiting for + * service. + */ + if (!(bfqd->busy_queues > 1 && bfq_class_idle(bfqq))) + goto return_rq; + + bfq_bfqq_expire(bfqd, bfqq, false, BFQ_BFQQ_BUDGET_EXHAUSTED); + +return_rq: + return rq; +} + +static bool bfq_has_work(struct blk_mq_hw_ctx *hctx) +{ + struct bfq_data *bfqd = hctx->queue->elevator->elevator_data; + + bfq_log(bfqd, "dispatch_non_empty %d busy_queues %d", + !list_empty_careful(&bfqd->dispatch), bfqd->busy_queues > 0); + + /* + * Avoiding lock: a race on bfqd->busy_queues should cause at + * most a call to dispatch for nothing + */ + return !list_empty_careful(&bfqd->dispatch) || + bfqd->busy_queues > 0; +} + +static struct request *__bfq_dispatch_request(struct blk_mq_hw_ctx *hctx) +{ + struct bfq_data *bfqd = hctx->queue->elevator->elevator_data; + struct request *rq = NULL; + struct bfq_queue *bfqq = NULL; + + if (!list_empty(&bfqd->dispatch)) { + rq = list_first_entry(&bfqd->dispatch, struct request, + queuelist); + list_del_init(&rq->queuelist); + rq->rq_flags &= ~RQF_DISP_LIST; + + bfq_log(bfqd, + "picked %p from dispatch list", rq); + bfqq = RQ_BFQQ(rq); + + if (bfqq) { + /* + * Increment counters here, because this + * dispatch does not follow the standard + * dispatch flow (where counters are + * incremented) + */ + bfqq->dispatched++; + + /* + * TESTING: reset DISP_LIST flag, because: 1) + * this rq this request has passed through + * bfq_prepare_request, 2) then it will have + * bfq_finish_requeue_request invoked on it, and 3) in + * bfq_finish_requeue_request we use this flag to check + * that bfq_finish_requeue_request is not invoked on + * requests for which bfq_prepare_request has + * been invoked. + */ + rq->rq_flags &= ~RQF_DISP_LIST; + goto inc_in_driver_start_rq; + } + + /* + * We exploit the bfq_finish_requeue_request hook to decrement + * rq_in_driver, but bfq_finish_requeue_request will not be + * invoked on this request. So, to avoid unbalance, + * just start this request, without incrementing + * rq_in_driver. As a negative consequence, + * rq_in_driver is deceptively lower than it should be + * while this request is in service. This may cause + * bfq_schedule_dispatch to be invoked uselessly. + * + * As for implementing an exact solution, the + * bfq_finish_requeue_request hook, if defined, is probably + * invoked also on this request. So, by exploiting + * this hook, we could 1) increment rq_in_driver here, + * and 2) decrement it in bfq_finish_requeue_request. Such a + * solution would let the value of the counter be + * always accurate, but it would entail using an extra + * interface function. This cost seems higher than the + * benefit, being the frequency of non-elevator-private + * requests very low. + */ + goto start_rq; + } + + bfq_log(bfqd, "%d busy queues", bfqd->busy_queues); + + if (bfqd->busy_queues == 0) + goto exit; + + /* + * Force device to serve one request at a time if + * strict_guarantees is true. Forcing this service scheme is + * currently the ONLY way to guarantee that the request + * service order enforced by the scheduler is respected by a + * queueing device. Otherwise the device is free even to make + * some unlucky request wait for as long as the device + * wishes. + * + * Of course, serving one request at at time may cause loss of + * throughput. + */ + if (bfqd->strict_guarantees && bfqd->rq_in_driver > 0) + goto exit; + + bfqq = bfq_select_queue(bfqd); + if (!bfqq) + goto exit; + + BUG_ON(bfqq == bfqd->in_service_queue && + bfqq->entity.budget < bfqq->entity.service); + + BUG_ON(bfqq == bfqd->in_service_queue && + bfq_bfqq_wait_request(bfqq)); + + rq = bfq_dispatch_rq_from_bfqq(bfqd, bfqq); + + BUG_ON(bfqq->entity.budget < bfqq->entity.service); + + if (rq) { + inc_in_driver_start_rq: + bfqd->rq_in_driver++; + start_rq: + rq->rq_flags |= RQF_STARTED; + if (bfqq) + bfq_log_bfqq(bfqd, bfqq, + "%s request %p, rq_in_driver %d", + bfq_bfqq_sync(bfqq) ? "sync" : "async", + rq, + bfqd->rq_in_driver); + else + bfq_log(bfqd, + "request %p from dispatch list, rq_in_driver %d", + rq, bfqd->rq_in_driver); + } else + bfq_log(bfqd, + "returned NULL request, rq_in_driver %d", + bfqd->rq_in_driver); + +exit: + return rq; +} + + +#if defined(BFQ_GROUP_IOSCHED_ENABLED) && defined(CONFIG_DEBUG_BLK_CGROUP) +static void bfq_update_dispatch_stats(struct request_queue *q, + struct request *rq, + struct bfq_queue *in_serv_queue, + bool idle_timer_disabled) +{ + struct bfq_queue *bfqq = rq ? RQ_BFQQ(rq) : NULL; + + if (!idle_timer_disabled && !bfqq) + return; + + /* + * rq and bfqq are guaranteed to exist until this function + * ends, for the following reasons. First, rq can be + * dispatched to the device, and then can be completed and + * freed, only after this function ends. Second, rq cannot be + * merged (and thus freed because of a merge) any longer, + * because it has already started. Thus rq cannot be freed + * before this function ends, and, since rq has a reference to + * bfqq, the same guarantee holds for bfqq too. + * + * In addition, the following queue lock guarantees that + * bfqq_group(bfqq) exists as well. + */ + spin_lock_irq(q->queue_lock); + if (idle_timer_disabled) + /* + * Since the idle timer has been disabled, + * in_serv_queue contained some request when + * __bfq_dispatch_request was invoked above, which + * implies that rq was picked exactly from + * in_serv_queue. Thus in_serv_queue == bfqq, and is + * therefore guaranteed to exist because of the above + * arguments. + */ + bfqg_stats_update_idle_time(bfqq_group(in_serv_queue)); + if (bfqq) { + struct bfq_group *bfqg = bfqq_group(bfqq); + + bfqg_stats_update_avg_queue_size(bfqg); + bfqg_stats_set_start_empty_time(bfqg); + bfqg_stats_update_io_remove(bfqg, rq->cmd_flags); + } + spin_unlock_irq(q->queue_lock); +} +#else +static inline void bfq_update_dispatch_stats(struct request_queue *q, + struct request *rq, + struct bfq_queue *in_serv_queue, + bool idle_timer_disabled) {} +#endif +static struct request *bfq_dispatch_request(struct blk_mq_hw_ctx *hctx) +{ + struct bfq_data *bfqd = hctx->queue->elevator->elevator_data; + struct request *rq; + struct bfq_queue *in_serv_queue; + bool waiting_rq, idle_timer_disabled; + + spin_lock_irq(&bfqd->lock); + + in_serv_queue = bfqd->in_service_queue; + waiting_rq = in_serv_queue && bfq_bfqq_wait_request(in_serv_queue); + + rq = __bfq_dispatch_request(hctx); + + idle_timer_disabled = + waiting_rq && !bfq_bfqq_wait_request(in_serv_queue); + + spin_unlock_irq(&bfqd->lock); + + bfq_update_dispatch_stats(hctx->queue, rq, in_serv_queue, + idle_timer_disabled); + + return rq; +} + +/* + * Task holds one reference to the queue, dropped when task exits. Each rq + * in-flight on this queue also holds a reference, dropped when rq is freed. + * + * Scheduler lock must be held here. Recall not to use bfqq after calling + * this function on it. + */ +static void bfq_put_queue(struct bfq_queue *bfqq) +{ +#ifdef BFQ_GROUP_IOSCHED_ENABLED + struct bfq_group *bfqg = bfqq_group(bfqq); +#endif + + assert_spin_locked(&bfqq->bfqd->lock); + + BUG_ON(bfqq->ref <= 0); + + if (bfqq->bfqd) + bfq_log_bfqq(bfqq->bfqd, bfqq, "%p %d", bfqq, bfqq->ref); + + bfqq->ref--; + if (bfqq->ref) + return; + + BUG_ON(rb_first(&bfqq->sort_list)); + BUG_ON(bfqq->allocated != 0); + BUG_ON(bfqq->entity.tree); + BUG_ON(bfq_bfqq_busy(bfqq)); + + if (!hlist_unhashed(&bfqq->burst_list_node)) { + hlist_del_init(&bfqq->burst_list_node); + /* + * Decrement also burst size after the removal, if the + * process associated with bfqq is exiting, and thus + * does not contribute to the burst any longer. This + * decrement helps filter out false positives of large + * bursts, when some short-lived process (often due to + * the execution of commands by some service) happens + * to start and exit while a complex application is + * starting, and thus spawning several processes that + * do I/O (and that *must not* be treated as a large + * burst, see comments on bfq_handle_burst). + * + * In particular, the decrement is performed only if: + * 1) bfqq is not a merged queue, because, if it is, + * then this free of bfqq is not triggered by the exit + * of the process bfqq is associated with, but exactly + * by the fact that bfqq has just been merged. + * 2) burst_size is greater than 0, to handle + * unbalanced decrements. Unbalanced decrements may + * happen in te following case: bfqq is inserted into + * the current burst list--without incrementing + * bust_size--because of a split, but the current + * burst list is not the burst list bfqq belonged to + * (see comments on the case of a split in + * bfq_set_request). + */ + if (bfqq->bic && bfqq->bfqd->burst_size > 0) + bfqq->bfqd->burst_size--; + } + + if (bfqq->bfqd) + bfq_log_bfqq(bfqq->bfqd, bfqq, "%p freed", bfqq); + +#ifdef BFQ_GROUP_IOSCHED_ENABLED + bfq_log_bfqq(bfqq->bfqd, bfqq, "putting blkg and bfqg %p\n", bfqg); + bfqg_and_blkg_put(bfqg); +#endif + kmem_cache_free(bfq_pool, bfqq); +} + +static void bfq_put_cooperator(struct bfq_queue *bfqq) +{ + struct bfq_queue *__bfqq, *next; + + /* + * If this queue was scheduled to merge with another queue, be + * sure to drop the reference taken on that queue (and others in + * the merge chain). See bfq_setup_merge and bfq_merge_bfqqs. + */ + __bfqq = bfqq->new_bfqq; + while (__bfqq) { + if (__bfqq == bfqq) + break; + next = __bfqq->new_bfqq; + bfq_put_queue(__bfqq); + __bfqq = next; + } +} + +static void bfq_exit_bfqq(struct bfq_data *bfqd, struct bfq_queue *bfqq) +{ + if (bfqq == bfqd->in_service_queue) { + __bfq_bfqq_expire(bfqd, bfqq); + bfq_schedule_dispatch(bfqd); + } + + bfq_log_bfqq(bfqd, bfqq, "%p, %d", bfqq, bfqq->ref); + + bfq_put_cooperator(bfqq); + + bfq_put_queue(bfqq); /* release process reference */ +} + +static void bfq_exit_icq_bfqq(struct bfq_io_cq *bic, bool is_sync) +{ + struct bfq_queue *bfqq = bic_to_bfqq(bic, is_sync); + struct bfq_data *bfqd; + + if (bfqq) + bfqd = bfqq->bfqd; /* NULL if scheduler already exited */ + + if (bfqq && bfqd) { + unsigned long flags; + + spin_lock_irqsave(&bfqd->lock, flags); + bfq_exit_bfqq(bfqd, bfqq); + bic_set_bfqq(bic, NULL, is_sync); + spin_unlock_irqrestore(&bfqd->lock, flags); + } +} + +static void bfq_exit_icq(struct io_cq *icq) +{ + struct bfq_io_cq *bic = icq_to_bic(icq); + + BUG_ON(!bic); + bfq_exit_icq_bfqq(bic, true); + bfq_exit_icq_bfqq(bic, false); +} + +/* + * Update the entity prio values; note that the new values will not + * be used until the next (re)activation. + */ +static void bfq_set_next_ioprio_data(struct bfq_queue *bfqq, + struct bfq_io_cq *bic) +{ + struct task_struct *tsk = current; + int ioprio_class; + struct bfq_data *bfqd = bfqq->bfqd; + + WARN_ON(!bfqd); + if (!bfqd) + return; + + ioprio_class = IOPRIO_PRIO_CLASS(bic->ioprio); + switch (ioprio_class) { + default: + dev_err(bfqq->bfqd->queue->backing_dev_info->dev, + "bfq: bad prio class %d\n", ioprio_class); + case IOPRIO_CLASS_NONE: + /* + * No prio set, inherit CPU scheduling settings. + */ + bfqq->new_ioprio = task_nice_ioprio(tsk); + bfqq->new_ioprio_class = task_nice_ioclass(tsk); + break; + case IOPRIO_CLASS_RT: + bfqq->new_ioprio = IOPRIO_PRIO_DATA(bic->ioprio); + bfqq->new_ioprio_class = IOPRIO_CLASS_RT; + break; + case IOPRIO_CLASS_BE: + bfqq->new_ioprio = IOPRIO_PRIO_DATA(bic->ioprio); + bfqq->new_ioprio_class = IOPRIO_CLASS_BE; + break; + case IOPRIO_CLASS_IDLE: + bfqq->new_ioprio_class = IOPRIO_CLASS_IDLE; + bfqq->new_ioprio = 7; + break; + } + + if (bfqq->new_ioprio >= IOPRIO_BE_NR) { + pr_crit("bfq_set_next_ioprio_data: new_ioprio %d\n", + bfqq->new_ioprio); + BUG(); + } + + bfqq->entity.new_weight = bfq_ioprio_to_weight(bfqq->new_ioprio); + bfqq->entity.prio_changed = 1; + bfq_log_bfqq(bfqq->bfqd, bfqq, + "bic_class %d prio %d class %d", + ioprio_class, bfqq->new_ioprio, bfqq->new_ioprio_class); +} + +static void bfq_check_ioprio_change(struct bfq_io_cq *bic, struct bio *bio) +{ + struct bfq_data *bfqd = bic_to_bfqd(bic); + struct bfq_queue *bfqq; + unsigned long uninitialized_var(flags); + int ioprio = bic->icq.ioc->ioprio; + + /* + * This condition may trigger on a newly created bic, be sure to + * drop the lock before returning. + */ + if (unlikely(!bfqd) || likely(bic->ioprio == ioprio)) + return; + + bic->ioprio = ioprio; + + bfqq = bic_to_bfqq(bic, false); + if (bfqq) { + /* release process reference on this queue */ + bfq_put_queue(bfqq); + bfqq = bfq_get_queue(bfqd, bio, BLK_RW_ASYNC, bic); + bic_set_bfqq(bic, bfqq, false); + bfq_log_bfqq(bfqd, bfqq, + "bfqq %p %d", + bfqq, bfqq->ref); + } + + bfqq = bic_to_bfqq(bic, true); + if (bfqq) + bfq_set_next_ioprio_data(bfqq, bic); +} + +static void bfq_init_bfqq(struct bfq_data *bfqd, struct bfq_queue *bfqq, + struct bfq_io_cq *bic, pid_t pid, int is_sync) +{ + RB_CLEAR_NODE(&bfqq->entity.rb_node); + INIT_LIST_HEAD(&bfqq->fifo); + INIT_HLIST_NODE(&bfqq->burst_list_node); + BUG_ON(!hlist_unhashed(&bfqq->burst_list_node)); + + bfqq->ref = 0; + bfqq->bfqd = bfqd; + + if (bic) + bfq_set_next_ioprio_data(bfqq, bic); + + if (is_sync) { + /* + * No need to mark as has_short_ttime if in + * idle_class, because no device idling is performed + * for queues in idle class + */ + if (!bfq_class_idle(bfqq)) + /* tentatively mark as has_short_ttime */ + bfq_mark_bfqq_has_short_ttime(bfqq); + bfq_mark_bfqq_sync(bfqq); + bfq_mark_bfqq_just_created(bfqq); + /* + * Aggressively inject a lot of service: up to 90%. + * This coefficient remains constant during bfqq life, + * but this behavior might be changed, after enough + * testing and tuning. + */ + bfqq->inject_coeff = 1; + } else + bfq_clear_bfqq_sync(bfqq); + + bfqq->ttime.last_end_request = ktime_get_ns() - (1ULL<<32); + + bfq_mark_bfqq_IO_bound(bfqq); + + /* Tentative initial value to trade off between thr and lat */ + bfqq->max_budget = (2 * bfq_max_budget(bfqd)) / 3; + bfqq->pid = pid; + + bfqq->wr_coeff = 1; + bfqq->last_wr_start_finish = jiffies; + bfqq->wr_start_at_switch_to_srt = bfq_smallest_from_now(); + bfqq->budget_timeout = bfq_smallest_from_now(); + bfqq->split_time = bfq_smallest_from_now(); + + /* + * To not forget the possibly high bandwidth consumed by a + * process/queue in the recent past, + * bfq_bfqq_softrt_next_start() returns a value at least equal + * to the current value of bfqq->soft_rt_next_start (see + * comments on bfq_bfqq_softrt_next_start). Set + * soft_rt_next_start to now, to mean that bfqq has consumed + * no bandwidth so far. + */ + bfqq->soft_rt_next_start = jiffies; + + /* first request is almost certainly seeky */ + bfqq->seek_history = 1; +} + +static struct bfq_queue **bfq_async_queue_prio(struct bfq_data *bfqd, + struct bfq_group *bfqg, + int ioprio_class, int ioprio) +{ + switch (ioprio_class) { + case IOPRIO_CLASS_RT: + return &bfqg->async_bfqq[0][ioprio]; + case IOPRIO_CLASS_NONE: + ioprio = IOPRIO_NORM; + /* fall through */ + case IOPRIO_CLASS_BE: + return &bfqg->async_bfqq[1][ioprio]; + case IOPRIO_CLASS_IDLE: + return &bfqg->async_idle_bfqq; + default: + BUG(); + } +} + +static struct bfq_queue *bfq_get_queue(struct bfq_data *bfqd, + struct bio *bio, bool is_sync, + struct bfq_io_cq *bic) +{ + const int ioprio = IOPRIO_PRIO_DATA(bic->ioprio); + const int ioprio_class = IOPRIO_PRIO_CLASS(bic->ioprio); + struct bfq_queue **async_bfqq = NULL; + struct bfq_queue *bfqq; + struct bfq_group *bfqg; + + rcu_read_lock(); + + bfqg = bfq_find_set_group(bfqd, bio_blkcg(bio)); + if (!bfqg) { + bfqq = &bfqd->oom_bfqq; + goto out; + } + + if (!is_sync) { + async_bfqq = bfq_async_queue_prio(bfqd, bfqg, ioprio_class, + ioprio); + bfqq = *async_bfqq; + if (bfqq) + goto out; + } + + bfqq = kmem_cache_alloc_node(bfq_pool, + GFP_NOWAIT | __GFP_ZERO | __GFP_NOWARN, + bfqd->queue->node); + + if (bfqq) { + bfq_init_bfqq(bfqd, bfqq, bic, current->pid, + is_sync); + bfq_init_entity(&bfqq->entity, bfqg); + bfq_log_bfqq(bfqd, bfqq, "allocated"); + } else { + bfqq = &bfqd->oom_bfqq; + bfq_log_bfqq(bfqd, bfqq, "using oom bfqq"); + goto out; + } + + /* + * Pin the queue now that it's allocated, scheduler exit will + * prune it. + */ + if (async_bfqq) { + bfqq->ref++; /* + * Extra group reference, w.r.t. sync + * queue. This extra reference is removed + * only if bfqq->bfqg disappears, to + * guarantee that this queue is not freed + * until its group goes away. + */ + bfq_log_bfqq(bfqd, bfqq, "bfqq not in async: %p, %d", + bfqq, bfqq->ref); + *async_bfqq = bfqq; + } + +out: + bfqq->ref++; /* get a process reference to this queue */ + bfq_log_bfqq(bfqd, bfqq, "at end: %p, %d", bfqq, bfqq->ref); + rcu_read_unlock(); + return bfqq; +} + +static void bfq_update_io_thinktime(struct bfq_data *bfqd, + struct bfq_queue *bfqq) +{ + struct bfq_ttime *ttime = &bfqq->ttime; + u64 elapsed = ktime_get_ns() - bfqq->ttime.last_end_request; + + elapsed = min_t(u64, elapsed, 2 * bfqd->bfq_slice_idle); + + ttime->ttime_samples = (7*bfqq->ttime.ttime_samples + 256) / 8; + ttime->ttime_total = div_u64(7*ttime->ttime_total + 256*elapsed, 8); + ttime->ttime_mean = div64_ul(ttime->ttime_total + 128, + ttime->ttime_samples); +} + +static void +bfq_update_io_seektime(struct bfq_data *bfqd, struct bfq_queue *bfqq, + struct request *rq) +{ + bfqq->seek_history <<= 1; + bfqq->seek_history |= + get_sdist(bfqq->last_request_pos, rq) > BFQQ_SEEK_THR && + (!blk_queue_nonrot(bfqd->queue) || + blk_rq_sectors(rq) < BFQQ_SECT_THR_NONROT); +} + +static void bfq_update_has_short_ttime(struct bfq_data *bfqd, + struct bfq_queue *bfqq, + struct bfq_io_cq *bic) +{ + bool has_short_ttime = true; + + /* + * No need to update has_short_ttime if bfqq is async or in + * idle io prio class, or if bfq_slice_idle is zero, because + * no device idling is performed for bfqq in this case. + */ + if (!bfq_bfqq_sync(bfqq) || bfq_class_idle(bfqq) || + bfqd->bfq_slice_idle == 0) + return; + + /* Idle window just restored, statistics are meaningless. */ + if (time_is_after_eq_jiffies(bfqq->split_time + + bfqd->bfq_wr_min_idle_time)) + return; + + /* Think time is infinite if no process is linked to + * bfqq. Otherwise check average think time to + * decide whether to mark as has_short_ttime + */ + if (atomic_read(&bic->icq.ioc->active_ref) == 0 || + (bfq_sample_valid(bfqq->ttime.ttime_samples) && + bfqq->ttime.ttime_mean > bfqd->bfq_slice_idle)) + has_short_ttime = false; + + bfq_log_bfqq(bfqd, bfqq, "has_short_ttime %d", + has_short_ttime); + + if (has_short_ttime) + bfq_mark_bfqq_has_short_ttime(bfqq); + else + bfq_clear_bfqq_has_short_ttime(bfqq); +} + +/* + * Called when a new fs request (rq) is added to bfqq. Check if there's + * something we should do about it. + */ +static void bfq_rq_enqueued(struct bfq_data *bfqd, struct bfq_queue *bfqq, + struct request *rq) +{ + struct bfq_io_cq *bic = RQ_BIC(rq); + + if (rq->cmd_flags & REQ_META) + bfqq->meta_pending++; + + bfq_update_io_thinktime(bfqd, bfqq); + bfq_update_has_short_ttime(bfqd, bfqq, bic); + bfq_update_io_seektime(bfqd, bfqq, rq); + + bfq_log_bfqq(bfqd, bfqq, + "has_short_ttime=%d (seeky %d)", + bfq_bfqq_has_short_ttime(bfqq), BFQQ_SEEKY(bfqq)); + + bfqq->last_request_pos = blk_rq_pos(rq) + blk_rq_sectors(rq); + + if (bfqq == bfqd->in_service_queue && bfq_bfqq_wait_request(bfqq)) { + bool small_req = bfqq->queued[rq_is_sync(rq)] == 1 && + blk_rq_sectors(rq) < 32; + bool budget_timeout = bfq_bfqq_budget_timeout(bfqq); + + /* + * There is just this request queued: if the request + * is small and the queue is not to be expired, then + * just exit. + * + * In this way, if the device is being idled to wait + * for a new request from the in-service queue, we + * avoid unplugging the device and committing the + * device to serve just a small request. On the + * contrary, we wait for the block layer to decide + * when to unplug the device: hopefully, new requests + * will be merged to this one quickly, then the device + * will be unplugged and larger requests will be + * dispatched. + */ + if (small_req && !budget_timeout) + return; + + /* + * A large enough request arrived, or the queue is to + * be expired: in both cases disk idling is to be + * stopped, so clear wait_request flag and reset + * timer. + */ + bfq_clear_bfqq_wait_request(bfqq); + hrtimer_try_to_cancel(&bfqd->idle_slice_timer); + + /* + * The queue is not empty, because a new request just + * arrived. Hence we can safely expire the queue, in + * case of budget timeout, without risking that the + * timestamps of the queue are not updated correctly. + * See [1] for more details. + */ + if (budget_timeout) + bfq_bfqq_expire(bfqd, bfqq, false, + BFQ_BFQQ_BUDGET_TIMEOUT); + } +} + +/* returns true if it causes the idle timer to be disabled */ +static bool __bfq_insert_request(struct bfq_data *bfqd, struct request *rq) +{ + struct bfq_queue *bfqq = RQ_BFQQ(rq), *new_bfqq; + bool waiting, idle_timer_disabled = false; + BUG_ON(!bfqq); + + assert_spin_locked(&bfqd->lock); + + bfq_log_bfqq(bfqd, bfqq, "rq %p bfqq %p", rq, bfqq); + + /* + * An unplug may trigger a requeue of a request from the device + * driver: make sure we are in process context while trying to + * merge two bfq_queues. + */ + if (!in_interrupt()) { + new_bfqq = bfq_setup_cooperator(bfqd, bfqq, rq, true); + if (new_bfqq) { + if (bic_to_bfqq(RQ_BIC(rq), 1) != bfqq) + new_bfqq = bic_to_bfqq(RQ_BIC(rq), 1); + /* + * Release the request's reference to the old bfqq + * and make sure one is taken to the shared queue. + */ + new_bfqq->allocated++; + bfqq->allocated--; + bfq_log_bfqq(bfqd, bfqq, + "new allocated %d", bfqq->allocated); + bfq_log_bfqq(bfqd, new_bfqq, + "new_bfqq new allocated %d", + bfqq->allocated); + + new_bfqq->ref++; + /* + * If the bic associated with the process + * issuing this request still points to bfqq + * (and thus has not been already redirected + * to new_bfqq or even some other bfq_queue), + * then complete the merge and redirect it to + * new_bfqq. + */ + if (bic_to_bfqq(RQ_BIC(rq), 1) == bfqq) + bfq_merge_bfqqs(bfqd, RQ_BIC(rq), + bfqq, new_bfqq); + + bfq_clear_bfqq_just_created(bfqq); + /* + * rq is about to be enqueued into new_bfqq, + * release rq reference on bfqq + */ + bfq_put_queue(bfqq); + rq->elv.priv[1] = new_bfqq; + bfqq = new_bfqq; + } + } + + waiting = bfqq && bfq_bfqq_wait_request(bfqq); + bfq_add_request(rq); + idle_timer_disabled = waiting && !bfq_bfqq_wait_request(bfqq); + + rq->fifo_time = ktime_get_ns() + bfqd->bfq_fifo_expire[rq_is_sync(rq)]; + list_add_tail(&rq->queuelist, &bfqq->fifo); + + bfq_rq_enqueued(bfqd, bfqq, rq); + + return idle_timer_disabled; +} + +#if defined(BFQ_GROUP_IOSCHED_ENABLED) && defined(CONFIG_DEBUG_BLK_CGROUP) +static void bfq_update_insert_stats(struct request_queue *q, + struct bfq_queue *bfqq, + bool idle_timer_disabled, + unsigned int cmd_flags) +{ + if (!bfqq) + return; + + /* + * bfqq still exists, because it can disappear only after + * either it is merged with another queue, or the process it + * is associated with exits. But both actions must be taken by + * the same process currently executing this flow of + * instructions. + * + * In addition, the following queue lock guarantees that + * bfqq_group(bfqq) exists as well. + */ + spin_lock_irq(q->queue_lock); + bfqg_stats_update_io_add(bfqq_group(bfqq), bfqq, cmd_flags); + if (idle_timer_disabled) + bfqg_stats_update_idle_time(bfqq_group(bfqq)); + spin_unlock_irq(q->queue_lock); +} +#else +static inline void bfq_update_insert_stats(struct request_queue *q, + struct bfq_queue *bfqq, + bool idle_timer_disabled, + unsigned int cmd_flags) {} +#endif + +static void bfq_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq, + bool at_head) +{ + struct request_queue *q = hctx->queue; + struct bfq_data *bfqd = q->elevator->elevator_data; + struct bfq_queue *bfqq; + bool idle_timer_disabled = false; + unsigned int cmd_flags; + + spin_lock_irq(&bfqd->lock); + if (blk_mq_sched_try_insert_merge(q, rq)) { + spin_unlock_irq(&bfqd->lock); + return; + } + + spin_unlock_irq(&bfqd->lock); + + blk_mq_sched_request_inserted(rq); + + spin_lock_irq(&bfqd->lock); + + bfqq = bfq_init_rq(rq); + BUG_ON(!bfqq && !(at_head || blk_rq_is_passthrough(rq))); + BUG_ON(bfqq && bic_to_bfqq(RQ_BIC(rq), rq_is_sync(rq)) != bfqq); + + if (at_head || blk_rq_is_passthrough(rq)) { + if (at_head) + list_add(&rq->queuelist, &bfqd->dispatch); + else + list_add_tail(&rq->queuelist, &bfqd->dispatch); + + rq->rq_flags |= RQF_DISP_LIST; + if (bfqq) + bfq_log_bfqq(bfqd, bfqq, + "%p in disp: at_head %d", + rq, at_head); + else + bfq_log(bfqd, + "%p in disp: at_head %d", + rq, at_head); + } else { /* bfqq is assumed to be non null here */ + BUG_ON(!bfqq); + BUG_ON(!(rq->rq_flags & RQF_GOT)); + rq->rq_flags &= ~RQF_GOT; + + idle_timer_disabled = __bfq_insert_request(bfqd, rq); + /* + * Update bfqq, because, if a queue merge has occurred + * in __bfq_insert_request, then rq has been + * redirected into a new queue. + */ + bfqq = RQ_BFQQ(rq); + + if (rq_mergeable(rq)) { + elv_rqhash_add(q, rq); + if (!q->last_merge) + q->last_merge = rq; + } + } + + /* + * Cache cmd_flags before releasing scheduler lock, because rq + * may disappear afterwards (for example, because of a request + * merge). + */ + cmd_flags = rq->cmd_flags; + + spin_unlock_irq(&bfqd->lock); + bfq_update_insert_stats(q, bfqq, idle_timer_disabled, + cmd_flags); +} + +static void bfq_insert_requests(struct blk_mq_hw_ctx *hctx, + struct list_head *list, bool at_head) +{ + while (!list_empty(list)) { + struct request *rq; + + rq = list_first_entry(list, struct request, queuelist); + list_del_init(&rq->queuelist); + bfq_insert_request(hctx, rq, at_head); + } +} + +static void bfq_update_hw_tag(struct bfq_data *bfqd) +{ + bfqd->max_rq_in_driver = max_t(int, bfqd->max_rq_in_driver, + bfqd->rq_in_driver); + + if (bfqd->hw_tag == 1) + return; + + /* + * This sample is valid if the number of outstanding requests + * is large enough to allow a queueing behavior. Note that the + * sum is not exact, as it's not taking into account deactivated + * requests. + */ + if (bfqd->rq_in_driver + bfqd->queued < BFQ_HW_QUEUE_THRESHOLD) + return; + + if (bfqd->hw_tag_samples++ < BFQ_HW_QUEUE_SAMPLES) + return; + + bfqd->hw_tag = bfqd->max_rq_in_driver > BFQ_HW_QUEUE_THRESHOLD; + bfqd->max_rq_in_driver = 0; + bfqd->hw_tag_samples = 0; +} + +static void bfq_completed_request(struct bfq_queue *bfqq, struct bfq_data *bfqd) +{ + u64 now_ns; + u32 delta_us; + + bfq_update_hw_tag(bfqd); + + BUG_ON(!bfqd->rq_in_driver); + BUG_ON(!bfqq->dispatched); + bfqd->rq_in_driver--; + bfqq->dispatched--; + + bfq_log_bfqq(bfqd, bfqq, + "new disp %d, new rq_in_driver %d", + bfqq->dispatched, bfqd->rq_in_driver); + + if (!bfqq->dispatched && !bfq_bfqq_busy(bfqq)) { + BUG_ON(!RB_EMPTY_ROOT(&bfqq->sort_list)); + /* + * Set budget_timeout (which we overload to store the + * time at which the queue remains with no backlog and + * no outstanding request; used by the weight-raising + * mechanism). + */ + bfqq->budget_timeout = jiffies; + + bfq_weights_tree_remove(bfqd, bfqq); + } + + now_ns = ktime_get_ns(); + + bfqq->ttime.last_end_request = now_ns; + + /* + * Using us instead of ns, to get a reasonable precision in + * computing rate in next check. + */ + delta_us = div_u64(now_ns - bfqd->last_completion, NSEC_PER_USEC); + + bfq_log_bfqq(bfqd, bfqq, + "delta %uus/%luus max_size %u rate %llu/%llu", + delta_us, BFQ_MIN_TT/NSEC_PER_USEC, bfqd->last_rq_max_size, + delta_us > 0 ? + (USEC_PER_SEC* + (u64)((bfqd->last_rq_max_size<>BFQ_RATE_SHIFT : + (USEC_PER_SEC* + (u64)(bfqd->last_rq_max_size<>BFQ_RATE_SHIFT, + (USEC_PER_SEC*(u64)(1UL<<(BFQ_RATE_SHIFT-10)))>>BFQ_RATE_SHIFT); + + /* + * If the request took rather long to complete, and, according + * to the maximum request size recorded, this completion latency + * implies that the request was certainly served at a very low + * rate (less than 1M sectors/sec), then the whole observation + * interval that lasts up to this time instant cannot be a + * valid time interval for computing a new peak rate. Invoke + * bfq_update_rate_reset to have the following three steps + * taken: + * - close the observation interval at the last (previous) + * request dispatch or completion + * - compute rate, if possible, for that observation interval + * - reset to zero samples, which will trigger a proper + * re-initialization of the observation interval on next + * dispatch + */ + if (delta_us > BFQ_MIN_TT/NSEC_PER_USEC && + (bfqd->last_rq_max_size<last_completion = now_ns; + + /* + * If we are waiting to discover whether the request pattern + * of the task associated with the queue is actually + * isochronous, and both requisites for this condition to hold + * are now satisfied, then compute soft_rt_next_start (see the + * comments on the function bfq_bfqq_softrt_next_start()). We + * schedule this delayed check when bfqq expires, if it still + * has in-flight requests. + */ + if (bfq_bfqq_softrt_update(bfqq) && bfqq->dispatched == 0 && + RB_EMPTY_ROOT(&bfqq->sort_list)) + bfqq->soft_rt_next_start = + bfq_bfqq_softrt_next_start(bfqd, bfqq); + + /* + * If this is the in-service queue, check if it needs to be expired, + * or if we want to idle in case it has no pending requests. + */ + if (bfqd->in_service_queue == bfqq) { + if (bfq_bfqq_must_idle(bfqq)) { + if (bfqq->dispatched == 0) + bfq_arm_slice_timer(bfqd); + /* + * If we get here, we do not expire bfqq, even + * if bfqq was in budget timeout or had no + * more requests (as controlled in the next + * conditional instructions). The reason for + * not expiring bfqq is as follows. + * + * Here bfqq->dispatched > 0 holds, but + * bfq_bfqq_must_idle() returned true. This + * implies that, even if no request arrives + * for bfqq before bfqq->dispatched reaches 0, + * bfqq will, however, not be expired on the + * completion event that causes bfqq->dispatch + * to reach zero. In contrast, on this event, + * bfqq will start enjoying device idling + * (I/O-dispatch plugging). + * + * But, if we expired bfqq here, bfqq would + * not have the chance to enjoy device idling + * when bfqq->dispatched finally reaches + * zero. This would expose bfqq to violation + * of its reserved service guarantees. + */ + return; + } else if (bfq_may_expire_for_budg_timeout(bfqq)) + bfq_bfqq_expire(bfqd, bfqq, false, + BFQ_BFQQ_BUDGET_TIMEOUT); + else if (RB_EMPTY_ROOT(&bfqq->sort_list) && + (bfqq->dispatched == 0 || + !bfq_better_to_idle(bfqq))) + bfq_bfqq_expire(bfqd, bfqq, false, + BFQ_BFQQ_NO_MORE_REQUESTS); + } +} + +static void bfq_finish_requeue_request_body(struct bfq_queue *bfqq) +{ + bfq_log_bfqq(bfqq->bfqd, bfqq, + "allocated %d", bfqq->allocated); + BUG_ON(!bfqq->allocated); + bfqq->allocated--; + + bfq_put_queue(bfqq); +} + +/* + * Handle either a requeue or a finish for rq. The things to do are + * the same in both cases: all references to rq are to be dropped. In + * particular, rq is considered completed from the point of view of + * the scheduler. + */ +static void bfq_finish_requeue_request(struct request *rq) +{ + struct bfq_queue *bfqq; + struct bfq_data *bfqd; + struct bfq_io_cq *bic; + + BUG_ON(!rq); + + bfqq = RQ_BFQQ(rq); + + /* + * Requeue and finish hooks are invoked in blk-mq without + * checking whether the involved request is actually still + * referenced in the scheduler. To handle this fact, the + * following two checks make this function exit in case of + * spurious invocations, for which there is nothing to do. + * + * First, check whether rq has nothing to do with an elevator. + */ + if (unlikely(!(rq->rq_flags & RQF_ELVPRIV))) + return; + + /* + * rq either is not associated with any icq, or is an already + * requeued request that has not (yet) been re-inserted into + * a bfq_queue. + */ + if (!rq->elv.icq || !bfqq) + return; + + bic = RQ_BIC(rq); + BUG_ON(!bic); + + bfqd = bfqq->bfqd; + BUG_ON(!bfqd); + + if (rq->rq_flags & RQF_DISP_LIST) { + pr_crit("putting disp rq %p for %d", rq, bfqq->pid); + BUG(); + } + BUG_ON(rq->rq_flags & RQF_QUEUED); + + bfq_log_bfqq(bfqd, bfqq, + "putting rq %p with %u sects left, STARTED %d", + rq, blk_rq_sectors(rq), + rq->rq_flags & RQF_STARTED); + + if (rq->rq_flags & RQF_STARTED) + bfqg_stats_update_completion(bfqq_group(bfqq), + rq->start_time_ns, + rq->io_start_time_ns, + rq->cmd_flags); + + WARN_ON(blk_rq_sectors(rq) == 0 && !(rq->rq_flags & RQF_STARTED)); + + if (likely(rq->rq_flags & RQF_STARTED)) { + unsigned long flags; + + spin_lock_irqsave(&bfqd->lock, flags); + + bfq_completed_request(bfqq, bfqd); + bfq_finish_requeue_request_body(bfqq); + + spin_unlock_irqrestore(&bfqd->lock, flags); + } else { + /* + * Request rq may be still/already in the scheduler, + * in which case we need to remove it (this should + * never happen in case of requeue). And we cannot + * defer such a check and removal, to avoid + * inconsistencies in the time interval from the end + * of this function to the start of the deferred work. + * This situation seems to occur only in process + * context, as a consequence of a merge. In the + * current version of the code, this implies that the + * lock is held. + */ + BUG_ON(in_interrupt()); + + assert_spin_locked(&bfqd->lock); + if (!RB_EMPTY_NODE(&rq->rb_node)) { + bfq_remove_request(rq->q, rq); + bfqg_stats_update_io_remove(bfqq_group(bfqq), + rq->cmd_flags); + } + bfq_finish_requeue_request_body(bfqq); + } + + /* + * Reset private fields. In case of a requeue, this allows + * this function to correctly do nothing if it is spuriously + * invoked again on this same request (see the check at the + * beginning of the function). Probably, a better general + * design would be to prevent blk-mq from invoking the requeue + * or finish hooks of an elevator, for a request that is not + * referred by that elevator. + * + * Resetting the following fields would break the + * request-insertion logic if rq is re-inserted into a bfq + * internal queue, without a re-preparation. Here we assume + * that re-insertions of requeued requests, without + * re-preparation, can happen only for pass_through or at_head + * requests (which are not re-inserted into bfq internal + * queues). + */ + rq->elv.priv[0] = NULL; + rq->elv.priv[1] = NULL; +} + +/* + * Returns NULL if a new bfqq should be allocated, or the old bfqq if this + * was the last process referring to that bfqq. + */ +static struct bfq_queue * +bfq_split_bfqq(struct bfq_io_cq *bic, struct bfq_queue *bfqq) +{ + bfq_log_bfqq(bfqq->bfqd, bfqq, "splitting queue"); + + if (bfqq_process_refs(bfqq) == 1) { + bfqq->pid = current->pid; + bfq_clear_bfqq_coop(bfqq); + bfq_clear_bfqq_split_coop(bfqq); + return bfqq; + } + + bic_set_bfqq(bic, NULL, 1); + + bfq_put_cooperator(bfqq); + + bfq_put_queue(bfqq); + return NULL; +} + +static struct bfq_queue *bfq_get_bfqq_handle_split(struct bfq_data *bfqd, + struct bfq_io_cq *bic, + struct bio *bio, + bool split, bool is_sync, + bool *new_queue) +{ + struct bfq_queue *bfqq = bic_to_bfqq(bic, is_sync); + + if (likely(bfqq && bfqq != &bfqd->oom_bfqq)) + return bfqq; + + if (new_queue) + *new_queue = true; + + if (bfqq) + bfq_put_queue(bfqq); + bfqq = bfq_get_queue(bfqd, bio, is_sync, bic); + BUG_ON(!hlist_unhashed(&bfqq->burst_list_node)); + + bic_set_bfqq(bic, bfqq, is_sync); + if (split && is_sync) { + bfq_log_bfqq(bfqd, bfqq, + "get_request: was_in_list %d " + "was_in_large_burst %d " + "large burst in progress %d", + bic->was_in_burst_list, + bic->saved_in_large_burst, + bfqd->large_burst); + + if ((bic->was_in_burst_list && bfqd->large_burst) || + bic->saved_in_large_burst) { + bfq_log_bfqq(bfqd, bfqq, + "get_request: marking in " + "large burst"); + bfq_mark_bfqq_in_large_burst(bfqq); + } else { + bfq_log_bfqq(bfqd, bfqq, + "get_request: clearing in " + "large burst"); + bfq_clear_bfqq_in_large_burst(bfqq); + if (bic->was_in_burst_list) + /* + * If bfqq was in the current + * burst list before being + * merged, then we have to add + * it back. And we do not need + * to increase burst_size, as + * we did not decrement + * burst_size when we removed + * bfqq from the burst list as + * a consequence of a merge + * (see comments in + * bfq_put_queue). In this + * respect, it would be rather + * costly to know whether the + * current burst list is still + * the same burst list from + * which bfqq was removed on + * the merge. To avoid this + * cost, if bfqq was in a + * burst list, then we add + * bfqq to the current burst + * list without any further + * check. This can cause + * inappropriate insertions, + * but rarely enough to not + * harm the detection of large + * bursts significantly. + */ + hlist_add_head(&bfqq->burst_list_node, + &bfqd->burst_list); + } + bfqq->split_time = jiffies; + } + + return bfqq; +} + +/* + * Only reset private fields. The actual request preparation will be + * performed by bfq_init_rq, when rq is either inserted or merged. See + * comments on bfq_init_rq for the reason behind this delayed + * preparation. +*/ +static void bfq_prepare_request(struct request *rq, struct bio *bio) +{ + /* + * Regardless of whether we have an icq attached, we have to + * clear the scheduler pointers, as they might point to + * previously allocated bic/bfqq structs. + */ + rq->elv.priv[0] = rq->elv.priv[1] = NULL; +} + +/* + * If needed, init rq, allocate bfq data structures associated with + * rq, and increment reference counters in the destination bfq_queue + * for rq. Return the destination bfq_queue for rq, or NULL is rq is + * not associated with any bfq_queue. + * + * This function is invoked by the functions that perform rq insertion + * or merging. One may have expected the above preparation operations + * to be performed in bfq_prepare_request, and not delayed to when rq + * is inserted or merged. The rationale behind this delayed + * preparation is that, after the prepare_request hook is invoked for + * rq, rq may still be transformed into a request with no icq, i.e., a + * request not associated with any queue. No bfq hook is invoked to + * signal this tranformation. As a consequence, should these + * preparation operations be performed when the prepare_request hook + * is invoked, and should rq be transformed one moment later, bfq + * would end up in an inconsistent state, because it would have + * incremented some queue counters for an rq destined to + * transformation, without any chance to correctly lower these + * counters back. In contrast, no transformation can still happen for + * rq after rq has been inserted or merged. So, it is safe to execute + * these preparation operations when rq is finally inserted or merged. + */ +static struct bfq_queue *bfq_init_rq(struct request *rq) +{ + struct request_queue *q = rq->q; + struct bio *bio = rq->bio; + struct bfq_data *bfqd = q->elevator->elevator_data; + struct bfq_io_cq *bic; + const int is_sync = rq_is_sync(rq); + struct bfq_queue *bfqq; + bool bfqq_already_existing = false, split = false; + bool new_queue = false; + + if (unlikely(!rq->elv.icq)) + return NULL; + + /* + * Assuming that elv.priv[1] is set only if everything is set + * for this rq. This holds true, because this function is + * invoked only for insertion or merging, and, after such + * events, a request cannot be manipulated any longer before + * being removed from bfq. + */ + if (rq->elv.priv[1]) { + BUG_ON(!(rq->rq_flags & RQF_ELVPRIV)); + return rq->elv.priv[1]; + } + + bic = icq_to_bic(rq->elv.icq); + + bfq_check_ioprio_change(bic, bio); + + bfq_bic_update_cgroup(bic, bio); + + bfqq = bfq_get_bfqq_handle_split(bfqd, bic, bio, false, is_sync, + &new_queue); + + if (likely(!new_queue)) { + /* If the queue was seeky for too long, break it apart. */ + if (bfq_bfqq_coop(bfqq) && bfq_bfqq_split_coop(bfqq)) { + BUG_ON(!is_sync); + bfq_log_bfqq(bfqd, bfqq, "breaking apart bfqq"); + + /* Update bic before losing reference to bfqq */ + if (bfq_bfqq_in_large_burst(bfqq)) + bic->saved_in_large_burst = true; + + bfqq = bfq_split_bfqq(bic, bfqq); + split = true; + + if (!bfqq) + bfqq = bfq_get_bfqq_handle_split(bfqd, bic, bio, + true, is_sync, + NULL); + else + bfqq_already_existing = true; + + BUG_ON(!bfqq); + BUG_ON(bfqq == &bfqd->oom_bfqq); + } + } + + bfqq->allocated++; + bfq_log_bfqq(bfqq->bfqd, bfqq, + "new allocated %d", bfqq->allocated); + + bfqq->ref++; + bfq_log_bfqq(bfqd, bfqq, "%p: bfqq %p, %d", rq, bfqq, bfqq->ref); + + rq->elv.priv[0] = bic; + rq->elv.priv[1] = bfqq; + rq->rq_flags &= ~RQF_DISP_LIST; + + /* + * If a bfq_queue has only one process reference, it is owned + * by only this bic: we can then set bfqq->bic = bic. in + * addition, if the queue has also just been split, we have to + * resume its state. + */ + if (likely(bfqq != &bfqd->oom_bfqq) && bfqq_process_refs(bfqq) == 1) { + bfqq->bic = bic; + if (split) { + /* + * The queue has just been split from a shared + * queue: restore the idle window and the + * possible weight raising period. + */ + bfq_bfqq_resume_state(bfqq, bfqd, bic, + bfqq_already_existing); + } + } + + if (unlikely(bfq_bfqq_just_created(bfqq))) + bfq_handle_burst(bfqd, bfqq); + + rq->rq_flags |= RQF_GOT; + + return bfqq; +} + +static void bfq_idle_slice_timer_body(struct bfq_queue *bfqq) +{ + struct bfq_data *bfqd = bfqq->bfqd; + enum bfqq_expiration reason; + unsigned long flags; + + BUG_ON(!bfqd); + spin_lock_irqsave(&bfqd->lock, flags); + + bfq_log_bfqq(bfqd, bfqq, "handling slice_timer expiration"); + bfq_clear_bfqq_wait_request(bfqq); + + if (bfqq != bfqd->in_service_queue) { + spin_unlock_irqrestore(&bfqd->lock, flags); + return; + } + + if (bfq_bfqq_budget_timeout(bfqq)) + /* + * Also here the queue can be safely expired + * for budget timeout without wasting + * guarantees + */ + reason = BFQ_BFQQ_BUDGET_TIMEOUT; + else if (bfqq->queued[0] == 0 && bfqq->queued[1] == 0) + /* + * The queue may not be empty upon timer expiration, + * because we may not disable the timer when the + * first request of the in-service queue arrives + * during disk idling. + */ + reason = BFQ_BFQQ_TOO_IDLE; + else + goto schedule_dispatch; + + bfq_bfqq_expire(bfqd, bfqq, true, reason); + +schedule_dispatch: + spin_unlock_irqrestore(&bfqd->lock, flags); + bfq_schedule_dispatch(bfqd); +} + +/* + * Handler of the expiration of the timer running if the in-service queue + * is idling inside its time slice. + */ +static enum hrtimer_restart bfq_idle_slice_timer(struct hrtimer *timer) +{ + struct bfq_data *bfqd = container_of(timer, struct bfq_data, + idle_slice_timer); + struct bfq_queue *bfqq = bfqd->in_service_queue; + + bfq_log(bfqd, "expired"); + + /* + * Theoretical race here: the in-service queue can be NULL or + * different from the queue that was idling if a new request + * arrives for the current queue and there is a full dispatch + * cycle that changes the in-service queue. This can hardly + * happen, but in the worst case we just expire a queue too + * early. + */ + if (bfqq) + bfq_idle_slice_timer_body(bfqq); + + return HRTIMER_NORESTART; +} + +static void __bfq_put_async_bfqq(struct bfq_data *bfqd, + struct bfq_queue **bfqq_ptr) +{ + struct bfq_group *root_group = bfqd->root_group; + struct bfq_queue *bfqq = *bfqq_ptr; + + bfq_log(bfqd, "%p", bfqq); + if (bfqq) { + bfq_bfqq_move(bfqd, bfqq, root_group); + bfq_log_bfqq(bfqd, bfqq, "putting %p, %d", + bfqq, bfqq->ref); + bfq_put_queue(bfqq); + *bfqq_ptr = NULL; + } +} + +/* + * Release all the bfqg references to its async queues. If we are + * deallocating the group these queues may still contain requests, so + * we reparent them to the root cgroup (i.e., the only one that will + * exist for sure until all the requests on a device are gone). + */ +static void bfq_put_async_queues(struct bfq_data *bfqd, struct bfq_group *bfqg) +{ + int i, j; + + for (i = 0; i < 2; i++) + for (j = 0; j < IOPRIO_BE_NR; j++) + __bfq_put_async_bfqq(bfqd, &bfqg->async_bfqq[i][j]); + + __bfq_put_async_bfqq(bfqd, &bfqg->async_idle_bfqq); +} + +static void bfq_exit_queue(struct elevator_queue *e) +{ + struct bfq_data *bfqd = e->elevator_data; + struct bfq_queue *bfqq, *n; + + bfq_log(bfqd, "starting ..."); + + hrtimer_cancel(&bfqd->idle_slice_timer); + + BUG_ON(bfqd->in_service_queue); + BUG_ON(!list_empty(&bfqd->active_list)); + + spin_lock_irq(&bfqd->lock); + list_for_each_entry_safe(bfqq, n, &bfqd->idle_list, bfqq_list) + bfq_deactivate_bfqq(bfqd, bfqq, false, false); + spin_unlock_irq(&bfqd->lock); + + hrtimer_cancel(&bfqd->idle_slice_timer); + + BUG_ON(hrtimer_active(&bfqd->idle_slice_timer)); + +#ifdef BFQ_GROUP_IOSCHED_ENABLED + /* release oom-queue reference to root group */ + bfqg_and_blkg_put(bfqd->root_group); + + blkcg_deactivate_policy(bfqd->queue, &blkcg_policy_bfq); +#else + spin_lock_irq(&bfqd->lock); + bfq_put_async_queues(bfqd, bfqd->root_group); + kfree(bfqd->root_group); + spin_unlock_irq(&bfqd->lock); +#endif + + bfq_log(bfqd, "finished ..."); + kfree(bfqd); +} + +static void bfq_init_root_group(struct bfq_group *root_group, + struct bfq_data *bfqd) +{ + int i; + +#ifdef BFQ_GROUP_IOSCHED_ENABLED + root_group->entity.parent = NULL; + root_group->my_entity = NULL; + root_group->bfqd = bfqd; +#endif + root_group->rq_pos_tree = RB_ROOT; + for (i = 0; i < BFQ_IOPRIO_CLASSES; i++) + root_group->sched_data.service_tree[i] = BFQ_SERVICE_TREE_INIT; + root_group->sched_data.bfq_class_idle_last_service = jiffies; +} + +static int bfq_init_queue(struct request_queue *q, struct elevator_type *e) +{ + struct bfq_data *bfqd; + struct elevator_queue *eq; + + eq = elevator_alloc(q, e); + if (!eq) + return -ENOMEM; + + bfqd = kzalloc_node(sizeof(*bfqd), GFP_KERNEL, q->node); + if (!bfqd) { + kobject_put(&eq->kobj); + return -ENOMEM; + } + eq->elevator_data = bfqd; + + spin_lock_irq(q->queue_lock); + q->elevator = eq; + spin_unlock_irq(q->queue_lock); + + /* + * Our fallback bfqq if bfq_find_alloc_queue() runs into OOM issues. + * Grab a permanent reference to it, so that the normal code flow + * will not attempt to free it. + */ + bfq_init_bfqq(bfqd, &bfqd->oom_bfqq, NULL, 1, 0); + bfqd->oom_bfqq.ref++; + bfqd->oom_bfqq.new_ioprio = BFQ_DEFAULT_QUEUE_IOPRIO; + bfqd->oom_bfqq.new_ioprio_class = IOPRIO_CLASS_BE; + bfqd->oom_bfqq.entity.new_weight = + bfq_ioprio_to_weight(bfqd->oom_bfqq.new_ioprio); + + /* oom_bfqq does not participate to bursts */ + bfq_clear_bfqq_just_created(&bfqd->oom_bfqq); + /* + * Trigger weight initialization, according to ioprio, at the + * oom_bfqq's first activation. The oom_bfqq's ioprio and ioprio + * class won't be changed any more. + */ + bfqd->oom_bfqq.entity.prio_changed = 1; + + bfqd->queue = q; + INIT_LIST_HEAD(&bfqd->dispatch); + + hrtimer_init(&bfqd->idle_slice_timer, CLOCK_MONOTONIC, + HRTIMER_MODE_REL); + bfqd->idle_slice_timer.function = bfq_idle_slice_timer; + + bfqd->queue_weights_tree = RB_ROOT; + bfqd->group_weights_tree = RB_ROOT; + + INIT_LIST_HEAD(&bfqd->active_list); + INIT_LIST_HEAD(&bfqd->idle_list); + INIT_HLIST_HEAD(&bfqd->burst_list); + + bfqd->hw_tag = -1; + + bfqd->bfq_max_budget = bfq_default_max_budget; + + bfqd->bfq_fifo_expire[0] = bfq_fifo_expire[0]; + bfqd->bfq_fifo_expire[1] = bfq_fifo_expire[1]; + bfqd->bfq_back_max = bfq_back_max; + bfqd->bfq_back_penalty = bfq_back_penalty; + bfqd->bfq_slice_idle = bfq_slice_idle; + bfqd->bfq_timeout = bfq_timeout; + + bfqd->bfq_requests_within_timer = 120; + + bfqd->bfq_large_burst_thresh = 8; + bfqd->bfq_burst_interval = msecs_to_jiffies(180); + + bfqd->low_latency = true; + + /* + * Trade-off between responsiveness and fairness. + */ + bfqd->bfq_wr_coeff = 30; + bfqd->bfq_wr_rt_max_time = msecs_to_jiffies(300); + bfqd->bfq_wr_max_time = 0; + bfqd->bfq_wr_min_idle_time = msecs_to_jiffies(2000); + bfqd->bfq_wr_min_inter_arr_async = msecs_to_jiffies(500); + bfqd->bfq_wr_max_softrt_rate = 7000; /* + * Approximate rate required + * to playback or record a + * high-definition compressed + * video. + */ + bfqd->wr_busy_queues = 0; + + /* + * Begin by assuming, optimistically, that the device peak + * rate is equal to 2/3 of the highest reference rate. + */ + bfqd->rate_dur_prod = ref_rate[blk_queue_nonrot(bfqd->queue)] * + ref_wr_duration[blk_queue_nonrot(bfqd->queue)]; + bfqd->peak_rate = ref_rate[blk_queue_nonrot(bfqd->queue)] * 2 / 3; + + spin_lock_init(&bfqd->lock); + + /* + * The invocation of the next bfq_create_group_hierarchy + * function is the head of a chain of function calls + * (bfq_create_group_hierarchy->blkcg_activate_policy-> + * blk_mq_freeze_queue) that may lead to the invocation of the + * has_work hook function. For this reason, + * bfq_create_group_hierarchy is invoked only after all + * scheduler data has been initialized, apart from the fields + * that can be initialized only after invoking + * bfq_create_group_hierarchy. This, in particular, enables + * has_work to correctly return false. Of course, to avoid + * other inconsistencies, the blk-mq stack must then refrain + * from invoking further scheduler hooks before this init + * function is finished. + */ + bfqd->root_group = bfq_create_group_hierarchy(bfqd, q->node); + if (!bfqd->root_group) + goto out_free; + bfq_init_root_group(bfqd->root_group, bfqd); + bfq_init_entity(&bfqd->oom_bfqq.entity, bfqd->root_group); + + wbt_disable_default(q); + return 0; + +out_free: + kfree(bfqd); + kobject_put(&eq->kobj); + return -ENOMEM; +} + +static void bfq_slab_kill(void) +{ + kmem_cache_destroy(bfq_pool); +} + +static int __init bfq_slab_setup(void) +{ + bfq_pool = KMEM_CACHE(bfq_queue, 0); + if (!bfq_pool) + return -ENOMEM; + return 0; +} + +static ssize_t bfq_var_show(unsigned int var, char *page) +{ + return sprintf(page, "%u\n", var); +} + +static ssize_t bfq_var_store(unsigned long *var, const char *page, + size_t count) +{ + unsigned long new_val; + int ret = kstrtoul(page, 10, &new_val); + + if (ret == 0) + *var = new_val; + + return count; +} + +static ssize_t bfq_wr_max_time_show(struct elevator_queue *e, char *page) +{ + struct bfq_data *bfqd = e->elevator_data; + + return sprintf(page, "%d\n", bfqd->bfq_wr_max_time > 0 ? + jiffies_to_msecs(bfqd->bfq_wr_max_time) : + jiffies_to_msecs(bfq_wr_duration(bfqd))); +} + +static ssize_t bfq_weights_show(struct elevator_queue *e, char *page) +{ + struct bfq_queue *bfqq; + struct bfq_data *bfqd = e->elevator_data; + ssize_t num_char = 0; + + num_char += sprintf(page + num_char, "Tot reqs queued %d\n\n", + bfqd->queued); + + spin_lock_irq(&bfqd->lock); + + num_char += sprintf(page + num_char, "Active:\n"); + list_for_each_entry(bfqq, &bfqd->active_list, bfqq_list) { + num_char += sprintf(page + num_char, + "pid%d: weight %hu, nr_queued %d %d, ", + bfqq->pid, + bfqq->entity.weight, + bfqq->queued[0], + bfqq->queued[1]); + num_char += sprintf(page + num_char, + "dur %d/%u\n", + jiffies_to_msecs( + jiffies - + bfqq->last_wr_start_finish), + jiffies_to_msecs(bfqq->wr_cur_max_time)); + } + + num_char += sprintf(page + num_char, "Idle:\n"); + list_for_each_entry(bfqq, &bfqd->idle_list, bfqq_list) { + num_char += sprintf(page + num_char, + "pid%d: weight %hu, dur %d/%u\n", + bfqq->pid, + bfqq->entity.weight, + jiffies_to_msecs(jiffies - + bfqq->last_wr_start_finish), + jiffies_to_msecs(bfqq->wr_cur_max_time)); + } + + spin_unlock_irq(&bfqd->lock); + + return num_char; +} + +#define SHOW_FUNCTION(__FUNC, __VAR, __CONV) \ +static ssize_t __FUNC(struct elevator_queue *e, char *page) \ +{ \ + struct bfq_data *bfqd = e->elevator_data; \ + u64 __data = __VAR; \ + if (__CONV == 1) \ + __data = jiffies_to_msecs(__data); \ + else if (__CONV == 2) \ + __data = div_u64(__data, NSEC_PER_MSEC); \ + return bfq_var_show(__data, (page)); \ +} +SHOW_FUNCTION(bfq_fifo_expire_sync_show, bfqd->bfq_fifo_expire[1], 2); +SHOW_FUNCTION(bfq_fifo_expire_async_show, bfqd->bfq_fifo_expire[0], 2); +SHOW_FUNCTION(bfq_back_seek_max_show, bfqd->bfq_back_max, 0); +SHOW_FUNCTION(bfq_back_seek_penalty_show, bfqd->bfq_back_penalty, 0); +SHOW_FUNCTION(bfq_slice_idle_show, bfqd->bfq_slice_idle, 2); +SHOW_FUNCTION(bfq_max_budget_show, bfqd->bfq_user_max_budget, 0); +SHOW_FUNCTION(bfq_timeout_sync_show, bfqd->bfq_timeout, 1); +SHOW_FUNCTION(bfq_strict_guarantees_show, bfqd->strict_guarantees, 0); +SHOW_FUNCTION(bfq_low_latency_show, bfqd->low_latency, 0); +SHOW_FUNCTION(bfq_wr_coeff_show, bfqd->bfq_wr_coeff, 0); +SHOW_FUNCTION(bfq_wr_rt_max_time_show, bfqd->bfq_wr_rt_max_time, 1); +SHOW_FUNCTION(bfq_wr_min_idle_time_show, bfqd->bfq_wr_min_idle_time, 1); +SHOW_FUNCTION(bfq_wr_min_inter_arr_async_show, bfqd->bfq_wr_min_inter_arr_async, + 1); +SHOW_FUNCTION(bfq_wr_max_softrt_rate_show, bfqd->bfq_wr_max_softrt_rate, 0); +#undef SHOW_FUNCTION + +#define USEC_SHOW_FUNCTION(__FUNC, __VAR) \ +static ssize_t __FUNC(struct elevator_queue *e, char *page) \ +{ \ + struct bfq_data *bfqd = e->elevator_data; \ + u64 __data = __VAR; \ + __data = div_u64(__data, NSEC_PER_USEC); \ + return bfq_var_show(__data, (page)); \ +} +USEC_SHOW_FUNCTION(bfq_slice_idle_us_show, bfqd->bfq_slice_idle); +#undef USEC_SHOW_FUNCTION + +#define STORE_FUNCTION(__FUNC, __PTR, MIN, MAX, __CONV) \ +static ssize_t \ +__FUNC(struct elevator_queue *e, const char *page, size_t count) \ +{ \ + struct bfq_data *bfqd = e->elevator_data; \ + unsigned long uninitialized_var(__data); \ + int ret = bfq_var_store(&__data, (page), count); \ + if (__data < (MIN)) \ + __data = (MIN); \ + else if (__data > (MAX)) \ + __data = (MAX); \ + if (__CONV == 1) \ + *(__PTR) = msecs_to_jiffies(__data); \ + else if (__CONV == 2) \ + *(__PTR) = (u64)__data * NSEC_PER_MSEC; \ + else \ + *(__PTR) = __data; \ + return ret; \ +} +STORE_FUNCTION(bfq_fifo_expire_sync_store, &bfqd->bfq_fifo_expire[1], 1, + INT_MAX, 2); +STORE_FUNCTION(bfq_fifo_expire_async_store, &bfqd->bfq_fifo_expire[0], 1, + INT_MAX, 2); +STORE_FUNCTION(bfq_back_seek_max_store, &bfqd->bfq_back_max, 0, INT_MAX, 0); +STORE_FUNCTION(bfq_back_seek_penalty_store, &bfqd->bfq_back_penalty, 1, + INT_MAX, 0); +STORE_FUNCTION(bfq_slice_idle_store, &bfqd->bfq_slice_idle, 0, INT_MAX, 2); +STORE_FUNCTION(bfq_wr_coeff_store, &bfqd->bfq_wr_coeff, 1, INT_MAX, 0); +STORE_FUNCTION(bfq_wr_max_time_store, &bfqd->bfq_wr_max_time, 0, INT_MAX, 1); +STORE_FUNCTION(bfq_wr_rt_max_time_store, &bfqd->bfq_wr_rt_max_time, 0, INT_MAX, + 1); +STORE_FUNCTION(bfq_wr_min_idle_time_store, &bfqd->bfq_wr_min_idle_time, 0, + INT_MAX, 1); +STORE_FUNCTION(bfq_wr_min_inter_arr_async_store, + &bfqd->bfq_wr_min_inter_arr_async, 0, INT_MAX, 1); +STORE_FUNCTION(bfq_wr_max_softrt_rate_store, &bfqd->bfq_wr_max_softrt_rate, 0, + INT_MAX, 0); +#undef STORE_FUNCTION + +#define USEC_STORE_FUNCTION(__FUNC, __PTR, MIN, MAX) \ +static ssize_t __FUNC(struct elevator_queue *e, const char *page, size_t count)\ +{ \ + struct bfq_data *bfqd = e->elevator_data; \ + unsigned long uninitialized_var(__data); \ + int ret = bfq_var_store(&__data, (page), count); \ + if (__data < (MIN)) \ + __data = (MIN); \ + else if (__data > (MAX)) \ + __data = (MAX); \ + *(__PTR) = (u64)__data * NSEC_PER_USEC; \ + return ret; \ +} +USEC_STORE_FUNCTION(bfq_slice_idle_us_store, &bfqd->bfq_slice_idle, 0, + UINT_MAX); +#undef USEC_STORE_FUNCTION + +/* do nothing for the moment */ +static ssize_t bfq_weights_store(struct elevator_queue *e, + const char *page, size_t count) +{ + return count; +} + +static ssize_t bfq_max_budget_store(struct elevator_queue *e, + const char *page, size_t count) +{ + struct bfq_data *bfqd = e->elevator_data; + unsigned long uninitialized_var(__data); + int ret = bfq_var_store(&__data, (page), count); + + if (__data == 0) + bfqd->bfq_max_budget = bfq_calc_max_budget(bfqd); + else { + if (__data > INT_MAX) + __data = INT_MAX; + bfqd->bfq_max_budget = __data; + } + + bfqd->bfq_user_max_budget = __data; + + return ret; +} + +/* + * Leaving this name to preserve name compatibility with cfq + * parameters, but this timeout is used for both sync and async. + */ +static ssize_t bfq_timeout_sync_store(struct elevator_queue *e, + const char *page, size_t count) +{ + struct bfq_data *bfqd = e->elevator_data; + unsigned long uninitialized_var(__data); + int ret = bfq_var_store(&__data, (page), count); + + if (__data < 1) + __data = 1; + else if (__data > INT_MAX) + __data = INT_MAX; + + bfqd->bfq_timeout = msecs_to_jiffies(__data); + if (bfqd->bfq_user_max_budget == 0) + bfqd->bfq_max_budget = bfq_calc_max_budget(bfqd); + + return ret; +} + +static ssize_t bfq_strict_guarantees_store(struct elevator_queue *e, + const char *page, size_t count) +{ + struct bfq_data *bfqd = e->elevator_data; + unsigned long uninitialized_var(__data); + int ret = bfq_var_store(&__data, (page), count); + + if (__data > 1) + __data = 1; + if (!bfqd->strict_guarantees && __data == 1 + && bfqd->bfq_slice_idle < 8 * NSEC_PER_MSEC) + bfqd->bfq_slice_idle = 8 * NSEC_PER_MSEC; + + bfqd->strict_guarantees = __data; + + return ret; +} + +static ssize_t bfq_low_latency_store(struct elevator_queue *e, + const char *page, size_t count) +{ + struct bfq_data *bfqd = e->elevator_data; + unsigned long uninitialized_var(__data); + int ret = bfq_var_store(&__data, (page), count); + + if (__data > 1) + __data = 1; + if (__data == 0 && bfqd->low_latency != 0) + bfq_end_wr(bfqd); + bfqd->low_latency = __data; + + return ret; +} + +#define BFQ_ATTR(name) \ + __ATTR(name, S_IRUGO|S_IWUSR, bfq_##name##_show, bfq_##name##_store) + +static struct elv_fs_entry bfq_attrs[] = { + BFQ_ATTR(fifo_expire_sync), + BFQ_ATTR(fifo_expire_async), + BFQ_ATTR(back_seek_max), + BFQ_ATTR(back_seek_penalty), + BFQ_ATTR(slice_idle), + BFQ_ATTR(slice_idle_us), + BFQ_ATTR(max_budget), + BFQ_ATTR(timeout_sync), + BFQ_ATTR(strict_guarantees), + BFQ_ATTR(low_latency), + BFQ_ATTR(wr_coeff), + BFQ_ATTR(wr_max_time), + BFQ_ATTR(wr_rt_max_time), + BFQ_ATTR(wr_min_idle_time), + BFQ_ATTR(wr_min_inter_arr_async), + BFQ_ATTR(wr_max_softrt_rate), + BFQ_ATTR(weights), + __ATTR_NULL +}; + +static struct elevator_type iosched_bfq_mq = { + .ops.mq = { + .limit_depth = bfq_limit_depth, + .prepare_request = bfq_prepare_request, + .requeue_request = bfq_finish_requeue_request, + .finish_request = bfq_finish_requeue_request, + .exit_icq = bfq_exit_icq, + .insert_requests = bfq_insert_requests, + .dispatch_request = bfq_dispatch_request, + .next_request = elv_rb_latter_request, + .former_request = elv_rb_former_request, + .allow_merge = bfq_allow_bio_merge, + .bio_merge = bfq_bio_merge, + .request_merge = bfq_request_merge, + .requests_merged = bfq_requests_merged, + .request_merged = bfq_request_merged, + .has_work = bfq_has_work, + .init_sched = bfq_init_queue, + .exit_sched = bfq_exit_queue, + }, + + .uses_mq = true, + .icq_size = sizeof(struct bfq_io_cq), + .icq_align = __alignof__(struct bfq_io_cq), + .elevator_attrs = bfq_attrs, + .elevator_name = "bfq-mq", + .elevator_owner = THIS_MODULE, +}; + +#ifdef BFQ_GROUP_IOSCHED_ENABLED +static struct blkcg_policy blkcg_policy_bfq = { + .dfl_cftypes = bfq_blkg_files, + .legacy_cftypes = bfq_blkcg_legacy_files, + + .cpd_alloc_fn = bfq_cpd_alloc, + .cpd_init_fn = bfq_cpd_init, + .cpd_bind_fn = bfq_cpd_init, + .cpd_free_fn = bfq_cpd_free, + + .pd_alloc_fn = bfq_pd_alloc, + .pd_init_fn = bfq_pd_init, + .pd_offline_fn = bfq_pd_offline, + .pd_free_fn = bfq_pd_free, + .pd_reset_stats_fn = bfq_pd_reset_stats, +}; +#endif + +static int __init bfq_init(void) +{ + int ret; + char msg[60] = "BFQ I/O-scheduler: v8r12"; + +#ifdef BFQ_GROUP_IOSCHED_ENABLED + ret = blkcg_policy_register(&blkcg_policy_bfq); + if (ret) + return ret; +#endif + + ret = -ENOMEM; + if (bfq_slab_setup()) + goto err_pol_unreg; + + /* + * Times to load large popular applications for the typical + * systems installed on the reference devices (see the + * comments before the definition of the next + * array). Actually, we use slightly lower values, as the + * estimated peak rate tends to be smaller than the actual + * peak rate. The reason for this last fact is that estimates + * are computed over much shorter time intervals than the long + * intervals typically used for benchmarking. Why? First, to + * adapt more quickly to variations. Second, because an I/O + * scheduler cannot rely on a peak-rate-evaluation workload to + * be run for a long time. + */ + ref_wr_duration[0] = msecs_to_jiffies(7000); /* actually 8 sec */ + ref_wr_duration[1] = msecs_to_jiffies(2500); /* actually 3 sec */ + + ret = elv_register(&iosched_bfq_mq); + if (ret) + goto slab_kill; + +#ifdef BFQ_GROUP_IOSCHED_ENABLED + strcat(msg, " (with cgroups support)"); +#endif + pr_info("%s", msg); + + return 0; + +slab_kill: + bfq_slab_kill(); +err_pol_unreg: +#ifdef BFQ_GROUP_IOSCHED_ENABLED + blkcg_policy_unregister(&blkcg_policy_bfq); +#endif + return ret; +} + +static void __exit bfq_exit(void) +{ + elv_unregister(&iosched_bfq_mq); +#ifdef BFQ_GROUP_IOSCHED_ENABLED + blkcg_policy_unregister(&blkcg_policy_bfq); +#endif + bfq_slab_kill(); +} + +module_init(bfq_init); +module_exit(bfq_exit); + +MODULE_AUTHOR("Paolo Valente"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("MQ Budget Fair Queueing I/O Scheduler"); diff --git a/block/bfq-mq.h b/block/bfq-mq.h new file mode 100644 index 00000000000..d15f8ab8581 --- /dev/null +++ b/block/bfq-mq.h @@ -0,0 +1,1031 @@ +/* + * BFQ v8r12 for 4.11.0: data structures and common functions prototypes. + * + * Based on ideas and code from CFQ: + * Copyright (C) 2003 Jens Axboe + * + * Copyright (C) 2008 Fabio Checconi + * Paolo Valente + * + * Copyright (C) 2015 Paolo Valente + * + * Copyright (C) 2017 Paolo Valente + */ + +#ifndef _BFQ_H +#define _BFQ_H + +#include +#include + +/* see comments on CONFIG_BFQ_GROUP_IOSCHED in bfq.h */ +#ifdef CONFIG_MQ_BFQ_GROUP_IOSCHED +#define BFQ_GROUP_IOSCHED_ENABLED +#endif + +#define BFQ_IOPRIO_CLASSES 3 +#define BFQ_CL_IDLE_TIMEOUT (HZ/5) + +#define BFQ_MIN_WEIGHT 1 +#define BFQ_MAX_WEIGHT 1000 +#define BFQ_WEIGHT_CONVERSION_COEFF 10 + +#define BFQ_DEFAULT_QUEUE_IOPRIO 4 + +#define BFQ_WEIGHT_LEGACY_DFL 100 +#define BFQ_DEFAULT_GRP_IOPRIO 0 +#define BFQ_DEFAULT_GRP_CLASS IOPRIO_CLASS_BE + +/* + * Soft real-time applications are extremely more latency sensitive + * than interactive ones. Over-raise the weight of the former to + * privilege them against the latter. + */ +#define BFQ_SOFTRT_WEIGHT_FACTOR 100 + +struct bfq_entity; + +/** + * struct bfq_service_tree - per ioprio_class service tree. + * + * Each service tree represents a B-WF2Q+ scheduler on its own. Each + * ioprio_class has its own independent scheduler, and so its own + * bfq_service_tree. All the fields are protected by the queue lock + * of the containing bfqd. + */ +struct bfq_service_tree { + /* tree for active entities (i.e., those backlogged) */ + struct rb_root active; + /* tree for idle entities (i.e., not backlogged, with V <= F_i)*/ + struct rb_root idle; + + struct bfq_entity *first_idle; /* idle entity with minimum F_i */ + struct bfq_entity *last_idle; /* idle entity with maximum F_i */ + + u64 vtime; /* scheduler virtual time */ + /* scheduler weight sum; active and idle entities contribute to it */ + unsigned long wsum; +}; + +/** + * struct bfq_sched_data - multi-class scheduler. + * + * bfq_sched_data is the basic scheduler queue. It supports three + * ioprio_classes, and can be used either as a toplevel queue or as an + * intermediate queue in a hierarchical setup. + * + * The supported ioprio_classes are the same as in CFQ, in descending + * priority order, IOPRIO_CLASS_RT, IOPRIO_CLASS_BE, IOPRIO_CLASS_IDLE. + * Requests from higher priority queues are served before all the + * requests from lower priority queues; among requests of the same + * queue requests are served according to B-WF2Q+. + * + * The schedule is implemented by the service trees, plus the field + * @next_in_service, which points to the entity on the active trees + * that will be served next, if 1) no changes in the schedule occurs + * before the current in-service entity is expired, 2) the in-service + * queue becomes idle when it expires, and 3) if the entity pointed by + * in_service_entity is not a queue, then the in-service child entity + * of the entity pointed by in_service_entity becomes idle on + * expiration. This peculiar definition allows for the following + * optimization, not yet exploited: while a given entity is still in + * service, we already know which is the best candidate for next + * service among the other active entitities in the same parent + * entity. We can then quickly compare the timestamps of the + * in-service entity with those of such best candidate. + * + * All the fields are protected by the queue lock of the containing + * bfqd. + */ +struct bfq_sched_data { + struct bfq_entity *in_service_entity; /* entity in service */ + /* head-of-the-line entity in the scheduler (see comments above) */ + struct bfq_entity *next_in_service; + /* array of service trees, one per ioprio_class */ + struct bfq_service_tree service_tree[BFQ_IOPRIO_CLASSES]; + /* last time CLASS_IDLE was served */ + unsigned long bfq_class_idle_last_service; + +}; + +/** + * struct bfq_weight_counter - counter of the number of all active entities + * with a given weight. + */ +struct bfq_weight_counter { + unsigned int weight; /* weight of the entities this counter refers to */ + unsigned int num_active; /* nr of active entities with this weight */ + /* + * Weights tree member (see bfq_data's @queue_weights_tree and + * @group_weights_tree) + */ + struct rb_node weights_node; +}; + +/** + * struct bfq_entity - schedulable entity. + * + * A bfq_entity is used to represent either a bfq_queue (leaf node in the + * cgroup hierarchy) or a bfq_group into the upper level scheduler. Each + * entity belongs to the sched_data of the parent group in the cgroup + * hierarchy. Non-leaf entities have also their own sched_data, stored + * in @my_sched_data. + * + * Each entity stores independently its priority values; this would + * allow different weights on different devices, but this + * functionality is not exported to userspace by now. Priorities and + * weights are updated lazily, first storing the new values into the + * new_* fields, then setting the @prio_changed flag. As soon as + * there is a transition in the entity state that allows the priority + * update to take place the effective and the requested priority + * values are synchronized. + * + * Unless cgroups are used, the weight value is calculated from the + * ioprio to export the same interface as CFQ. When dealing with + * ``well-behaved'' queues (i.e., queues that do not spend too much + * time to consume their budget and have true sequential behavior, and + * when there are no external factors breaking anticipation) the + * relative weights at each level of the cgroups hierarchy should be + * guaranteed. All the fields are protected by the queue lock of the + * containing bfqd. + */ +struct bfq_entity { + struct rb_node rb_node; /* service_tree member */ + /* pointer to the weight counter associated with this entity */ + struct bfq_weight_counter *weight_counter; + + /* + * Flag, true if the entity is on a tree (either the active or + * the idle one of its service_tree) or is in service. + */ + bool on_st; + + u64 finish; /* B-WF2Q+ finish timestamp (aka F_i) */ + u64 start; /* B-WF2Q+ start timestamp (aka S_i) */ + + /* tree the entity is enqueued into; %NULL if not on a tree */ + struct rb_root *tree; + + /* + * minimum start time of the (active) subtree rooted at this + * entity; used for O(log N) lookups into active trees + */ + u64 min_start; + + /* amount of service received during the last service slot */ + int service; + + /* budget, used also to calculate F_i: F_i = S_i + @budget / @weight */ + int budget; + + unsigned int weight; /* weight of the queue */ + unsigned int new_weight; /* next weight if a change is in progress */ + + /* original weight, used to implement weight boosting */ + unsigned int orig_weight; + + /* parent entity, for hierarchical scheduling */ + struct bfq_entity *parent; + + /* + * For non-leaf nodes in the hierarchy, the associated + * scheduler queue, %NULL on leaf nodes. + */ + struct bfq_sched_data *my_sched_data; + /* the scheduler queue this entity belongs to */ + struct bfq_sched_data *sched_data; + + /* flag, set to request a weight, ioprio or ioprio_class change */ + int prio_changed; +}; + +struct bfq_group; + +/** + * struct bfq_ttime - per process thinktime stats. + */ +struct bfq_ttime { + u64 last_end_request; /* completion time of last request */ + + u64 ttime_total; /* total process thinktime */ + unsigned long ttime_samples; /* number of thinktime samples */ + u64 ttime_mean; /* average process thinktime */ + +}; + +/** + * struct bfq_queue - leaf schedulable entity. + * + * A bfq_queue is a leaf request queue; it can be associated with an + * io_context or more, if it is async or shared between cooperating + * processes. @cgroup holds a reference to the cgroup, to be sure that it + * does not disappear while a bfqq still references it (mostly to avoid + * races between request issuing and task migration followed by cgroup + * destruction). + * All the fields are protected by the queue lock of the containing bfqd. + */ +struct bfq_queue { + /* reference counter */ + int ref; + /* parent bfq_data */ + struct bfq_data *bfqd; + + /* current ioprio and ioprio class */ + unsigned short ioprio, ioprio_class; + /* next ioprio and ioprio class if a change is in progress */ + unsigned short new_ioprio, new_ioprio_class; + + /* + * Shared bfq_queue if queue is cooperating with one or more + * other queues. + */ + struct bfq_queue *new_bfqq; + /* request-position tree member (see bfq_group's @rq_pos_tree) */ + struct rb_node pos_node; + /* request-position tree root (see bfq_group's @rq_pos_tree) */ + struct rb_root *pos_root; + + /* sorted list of pending requests */ + struct rb_root sort_list; + /* if fifo isn't expired, next request to serve */ + struct request *next_rq; + /* number of sync and async requests queued */ + int queued[2]; + /* number of requests currently allocated */ + int allocated; + /* number of pending metadata requests */ + int meta_pending; + /* fifo list of requests in sort_list */ + struct list_head fifo; + + /* entity representing this queue in the scheduler */ + struct bfq_entity entity; + + /* maximum budget allowed from the feedback mechanism */ + int max_budget; + /* budget expiration (in jiffies) */ + unsigned long budget_timeout; + + /* number of requests on the dispatch list or inside driver */ + int dispatched; + + unsigned int flags; /* status flags.*/ + + /* node for active/idle bfqq list inside parent bfqd */ + struct list_head bfqq_list; + + /* associated @bfq_ttime struct */ + struct bfq_ttime ttime; + + /* bit vector: a 1 for each seeky requests in history */ + u32 seek_history; + + /* node for the device's burst list */ + struct hlist_node burst_list_node; + + /* position of the last request enqueued */ + sector_t last_request_pos; + + /* Number of consecutive pairs of request completion and + * arrival, such that the queue becomes idle after the + * completion, but the next request arrives within an idle + * time slice; used only if the queue's IO_bound flag has been + * cleared. + */ + unsigned int requests_within_timer; + + /* pid of the process owning the queue, used for logging purposes */ + pid_t pid; + + /* + * Pointer to the bfq_io_cq owning the bfq_queue, set to %NULL + * if the queue is shared. + */ + struct bfq_io_cq *bic; + + /* current maximum weight-raising time for this queue */ + unsigned long wr_cur_max_time; + /* + * Minimum time instant such that, only if a new request is + * enqueued after this time instant in an idle @bfq_queue with + * no outstanding requests, then the task associated with the + * queue it is deemed as soft real-time (see the comments on + * the function bfq_bfqq_softrt_next_start()) + */ + unsigned long soft_rt_next_start; + /* + * Start time of the current weight-raising period if + * the @bfq-queue is being weight-raised, otherwise + * finish time of the last weight-raising period. + */ + unsigned long last_wr_start_finish; + /* factor by which the weight of this queue is multiplied */ + unsigned int wr_coeff; + /* + * Time of the last transition of the @bfq_queue from idle to + * backlogged. + */ + unsigned long last_idle_bklogged; + /* + * Cumulative service received from the @bfq_queue since the + * last transition from idle to backlogged. + */ + unsigned long service_from_backlogged; + /* + * Cumulative service received from the @bfq_queue since its + * last transition to weight-raised state. + */ + unsigned long service_from_wr; + /* + * Value of wr start time when switching to soft rt + */ + unsigned long wr_start_at_switch_to_srt; + + unsigned long split_time; /* time of last split */ + unsigned long first_IO_time; /* time of first I/O for this queue */ + + /* max service rate measured so far */ + u32 max_service_rate; + /* + * Ratio between the service received by bfqq while it is in + * service, and the cumulative service (of requests of other + * queues) that may be injected while bfqq is empty but still + * in service. To increase precision, the coefficient is + * measured in tenths of unit. Here are some example of (1) + * ratios, (2) resulting percentages of service injected + * w.r.t. to the total service dispatched while bfqq is in + * service, and (3) corresponding values of the coefficient: + * 1 (50%) -> 10 + * 2 (33%) -> 20 + * 10 (9%) -> 100 + * 9.9 (9%) -> 99 + * 1.5 (40%) -> 15 + * 0.5 (66%) -> 5 + * 0.1 (90%) -> 1 + * + * So, if the coefficient is lower than 10, then + * injected service is more than bfqq service. + */ + unsigned int inject_coeff; + /* amount of service injected in current service slot */ + unsigned int injected_service; +}; + +/** + * struct bfq_io_cq - per (request_queue, io_context) structure. + */ +struct bfq_io_cq { + /* associated io_cq structure */ + struct io_cq icq; /* must be the first member */ + /* array of two process queues, the sync and the async */ + struct bfq_queue *bfqq[2]; + /* per (request_queue, blkcg) ioprio */ + int ioprio; +#ifdef BFQ_GROUP_IOSCHED_ENABLED + uint64_t blkcg_serial_nr; /* the current blkcg serial */ +#endif + + /* + * Snapshot of the has_short_time flag before merging; taken + * to remember its value while the queue is merged, so as to + * be able to restore it in case of split. + */ + bool saved_has_short_ttime; + /* + * Same purpose as the previous two fields for the I/O bound + * classification of a queue. + */ + bool saved_IO_bound; + + /* + * Same purpose as the previous fields for the value of the + * field keeping the queue's belonging to a large burst + */ + bool saved_in_large_burst; + /* + * True if the queue belonged to a burst list before its merge + * with another cooperating queue. + */ + bool was_in_burst_list; + + /* + * Similar to previous fields: save wr information. + */ + unsigned long saved_wr_coeff; + unsigned long saved_last_wr_start_finish; + unsigned long saved_wr_start_at_switch_to_srt; + unsigned int saved_wr_cur_max_time; + struct bfq_ttime saved_ttime; +}; + +/** + * struct bfq_data - per-device data structure. + * + * All the fields are protected by @lock. + */ +struct bfq_data { + /* device request queue */ + struct request_queue *queue; + /* dispatch queue */ + struct list_head dispatch; + + /* root bfq_group for the device */ + struct bfq_group *root_group; + + /* + * rbtree of weight counters of @bfq_queues, sorted by + * weight. Used to keep track of whether all @bfq_queues have + * the same weight. The tree contains one counter for each + * distinct weight associated to some active and not + * weight-raised @bfq_queue (see the comments to the functions + * bfq_weights_tree_[add|remove] for further details). + */ + struct rb_root queue_weights_tree; + /* + * rbtree of non-queue @bfq_entity weight counters, sorted by + * weight. Used to keep track of whether all @bfq_groups have + * the same weight. The tree contains one counter for each + * distinct weight associated to some active @bfq_group (see + * the comments to the functions bfq_weights_tree_[add|remove] + * for further details). + */ + struct rb_root group_weights_tree; + + /* + * Number of bfq_queues containing requests (including the + * queue in service, even if it is idling). + */ + int busy_queues; + /* number of weight-raised busy @bfq_queues */ + int wr_busy_queues; + /* number of queued requests */ + int queued; + /* number of requests dispatched and waiting for completion */ + int rq_in_driver; + + /* + * Maximum number of requests in driver in the last + * @hw_tag_samples completed requests. + */ + int max_rq_in_driver; + /* number of samples used to calculate hw_tag */ + int hw_tag_samples; + /* flag set to one if the driver is showing a queueing behavior */ + int hw_tag; + + /* number of budgets assigned */ + int budgets_assigned; + + /* + * Timer set when idling (waiting) for the next request from + * the queue in service. + */ + struct hrtimer idle_slice_timer; + + /* bfq_queue in service */ + struct bfq_queue *in_service_queue; + + /* on-disk position of the last served request */ + sector_t last_position; + + /* time of last request completion (ns) */ + u64 last_completion; + + /* time of first rq dispatch in current observation interval (ns) */ + u64 first_dispatch; + /* time of last rq dispatch in current observation interval (ns) */ + u64 last_dispatch; + + /* beginning of the last budget */ + ktime_t last_budget_start; + /* beginning of the last idle slice */ + ktime_t last_idling_start; + + /* number of samples in current observation interval */ + int peak_rate_samples; + /* num of samples of seq dispatches in current observation interval */ + u32 sequential_samples; + /* total num of sectors transferred in current observation interval */ + u64 tot_sectors_dispatched; + /* max rq size seen during current observation interval (sectors) */ + u32 last_rq_max_size; + /* time elapsed from first dispatch in current observ. interval (us) */ + u64 delta_from_first; + /* + * Current estimate of the device peak rate, measured in + * [(sectors/usec) / 2^BFQ_RATE_SHIFT]. The left-shift by + * BFQ_RATE_SHIFT is performed to increase precision in + * fixed-point calculations. + */ + u32 peak_rate; + + /* maximum budget allotted to a bfq_queue before rescheduling */ + int bfq_max_budget; + + /* list of all the bfq_queues active on the device */ + struct list_head active_list; + /* list of all the bfq_queues idle on the device */ + struct list_head idle_list; + + /* + * Timeout for async/sync requests; when it fires, requests + * are served in fifo order. + */ + u64 bfq_fifo_expire[2]; + /* weight of backward seeks wrt forward ones */ + unsigned int bfq_back_penalty; + /* maximum allowed backward seek */ + unsigned int bfq_back_max; + /* maximum idling time */ + u32 bfq_slice_idle; + + /* user-configured max budget value (0 for auto-tuning) */ + int bfq_user_max_budget; + /* + * Timeout for bfq_queues to consume their budget; used to + * prevent seeky queues from imposing long latencies to + * sequential or quasi-sequential ones (this also implies that + * seeky queues cannot receive guarantees in the service + * domain; after a timeout they are charged for the time they + * have been in service, to preserve fairness among them, but + * without service-domain guarantees). + */ + unsigned int bfq_timeout; + + /* + * Number of consecutive requests that must be issued within + * the idle time slice to set again idling to a queue which + * was marked as non-I/O-bound (see the definition of the + * IO_bound flag for further details). + */ + unsigned int bfq_requests_within_timer; + + /* + * Force device idling whenever needed to provide accurate + * service guarantees, without caring about throughput + * issues. CAVEAT: this may even increase latencies, in case + * of useless idling for processes that did stop doing I/O. + */ + bool strict_guarantees; + + /* + * Last time at which a queue entered the current burst of + * queues being activated shortly after each other; for more + * details about this and the following parameters related to + * a burst of activations, see the comments on the function + * bfq_handle_burst. + */ + unsigned long last_ins_in_burst; + /* + * Reference time interval used to decide whether a queue has + * been activated shortly after @last_ins_in_burst. + */ + unsigned long bfq_burst_interval; + /* number of queues in the current burst of queue activations */ + int burst_size; + + /* common parent entity for the queues in the burst */ + struct bfq_entity *burst_parent_entity; + /* Maximum burst size above which the current queue-activation + * burst is deemed as 'large'. + */ + unsigned long bfq_large_burst_thresh; + /* true if a large queue-activation burst is in progress */ + bool large_burst; + /* + * Head of the burst list (as for the above fields, more + * details in the comments on the function bfq_handle_burst). + */ + struct hlist_head burst_list; + + /* if set to true, low-latency heuristics are enabled */ + bool low_latency; + /* + * Maximum factor by which the weight of a weight-raised queue + * is multiplied. + */ + unsigned int bfq_wr_coeff; + /* maximum duration of a weight-raising period (jiffies) */ + unsigned int bfq_wr_max_time; + + /* Maximum weight-raising duration for soft real-time processes */ + unsigned int bfq_wr_rt_max_time; + /* + * Minimum idle period after which weight-raising may be + * reactivated for a queue (in jiffies). + */ + unsigned int bfq_wr_min_idle_time; + /* + * Minimum period between request arrivals after which + * weight-raising may be reactivated for an already busy async + * queue (in jiffies). + */ + unsigned long bfq_wr_min_inter_arr_async; + + /* Max service-rate for a soft real-time queue, in sectors/sec */ + unsigned int bfq_wr_max_softrt_rate; + /* + * Cached value of the product ref_rate*ref_wr_duration, used + * for computing the maximum duration of weight raising + * automatically. + */ + u64 rate_dur_prod; + + /* fallback dummy bfqq for extreme OOM conditions */ + struct bfq_queue oom_bfqq; + + spinlock_t lock; + + /* + * bic associated with the task issuing current bio for + * merging. This and the next field are used as a support to + * be able to perform the bic lookup, needed by bio-merge + * functions, before the scheduler lock is taken, and thus + * avoid taking the request-queue lock while the scheduler + * lock is being held. + */ + struct bfq_io_cq *bio_bic; + /* bfqq associated with the task issuing current bio for merging */ + struct bfq_queue *bio_bfqq; + /* Extra flag used only for TESTING */ + bool bio_bfqq_set; + + /* + * Cached sbitmap shift, used to compute depth limits in + * bfq_update_depths. + */ + unsigned int sb_shift; + + /* + * Depth limits used in bfq_limit_depth (see comments on the + * function) + */ + unsigned int word_depths[2][2]; +}; + +enum bfqq_state_flags { + BFQ_BFQQ_FLAG_just_created = 0, /* queue just allocated */ + BFQ_BFQQ_FLAG_busy, /* has requests or is in service */ + BFQ_BFQQ_FLAG_wait_request, /* waiting for a request */ + BFQ_BFQQ_FLAG_non_blocking_wait_rq, /* + * waiting for a request + * without idling the device + */ + BFQ_BFQQ_FLAG_fifo_expire, /* FIFO checked in this slice */ + BFQ_BFQQ_FLAG_has_short_ttime, /* queue has a short think time */ + BFQ_BFQQ_FLAG_sync, /* synchronous queue */ + BFQ_BFQQ_FLAG_IO_bound, /* + * bfqq has timed-out at least once + * having consumed at most 2/10 of + * its budget + */ + BFQ_BFQQ_FLAG_in_large_burst, /* + * bfqq activated in a large burst, + * see comments to bfq_handle_burst. + */ + BFQ_BFQQ_FLAG_softrt_update, /* + * may need softrt-next-start + * update + */ + BFQ_BFQQ_FLAG_coop, /* bfqq is shared */ + BFQ_BFQQ_FLAG_split_coop /* shared bfqq will be split */ +}; + +#define BFQ_BFQQ_FNS(name) \ +static void bfq_mark_bfqq_##name(struct bfq_queue *bfqq) \ +{ \ + (bfqq)->flags |= (1 << BFQ_BFQQ_FLAG_##name); \ +} \ +static void bfq_clear_bfqq_##name(struct bfq_queue *bfqq) \ +{ \ + (bfqq)->flags &= ~(1 << BFQ_BFQQ_FLAG_##name); \ +} \ +static int bfq_bfqq_##name(const struct bfq_queue *bfqq) \ +{ \ + return ((bfqq)->flags & (1 << BFQ_BFQQ_FLAG_##name)) != 0; \ +} + +BFQ_BFQQ_FNS(just_created); +BFQ_BFQQ_FNS(busy); +BFQ_BFQQ_FNS(wait_request); +BFQ_BFQQ_FNS(non_blocking_wait_rq); +BFQ_BFQQ_FNS(fifo_expire); +BFQ_BFQQ_FNS(has_short_ttime); +BFQ_BFQQ_FNS(sync); +BFQ_BFQQ_FNS(IO_bound); +BFQ_BFQQ_FNS(in_large_burst); +BFQ_BFQQ_FNS(coop); +BFQ_BFQQ_FNS(split_coop); +BFQ_BFQQ_FNS(softrt_update); +#undef BFQ_BFQQ_FNS + +/* Logging facilities. */ +#ifdef CONFIG_BFQ_REDIRECT_TO_CONSOLE + +static const char *checked_dev_name(const struct device *dev) +{ + static const char nodev[] = "nodev"; + + if (dev) + return dev_name(dev); + + return nodev; +} + +#ifdef BFQ_GROUP_IOSCHED_ENABLED +static struct bfq_group *bfqq_group(struct bfq_queue *bfqq); +static struct blkcg_gq *bfqg_to_blkg(struct bfq_group *bfqg); + +#define bfq_log_bfqq(bfqd, bfqq, fmt, args...) do { \ + pr_crit("%s bfq%d%c %s [%s] " fmt "\n", \ + checked_dev_name((bfqd)->queue->backing_dev_info->dev), \ + (bfqq)->pid, \ + bfq_bfqq_sync((bfqq)) ? 'S' : 'A', \ + bfqq_group(bfqq)->blkg_path, __func__, ##args); \ +} while (0) + +#define bfq_log_bfqg(bfqd, bfqg, fmt, args...) do { \ + pr_crit("%s %s [%s] " fmt "\n", \ + checked_dev_name((bfqd)->queue->backing_dev_info->dev), \ + bfqg->blkg_path, __func__, ##args); \ +} while (0) + +#else /* BFQ_GROUP_IOSCHED_ENABLED */ + +#define bfq_log_bfqq(bfqd, bfqq, fmt, args...) \ + pr_crit("%s bfq%d%c [%s] " fmt "\n", \ + checked_dev_name((bfqd)->queue->backing_dev_info->dev), \ + (bfqq)->pid, bfq_bfqq_sync((bfqq)) ? 'S' : 'A', \ + __func__, ##args) +#define bfq_log_bfqg(bfqd, bfqg, fmt, args...) do {} while (0) + +#endif /* BFQ_GROUP_IOSCHED_ENABLED */ + +#define bfq_log(bfqd, fmt, args...) \ + pr_crit("%s bfq [%s] " fmt "\n", \ + checked_dev_name((bfqd)->queue->backing_dev_info->dev), \ + __func__, ##args) + +#else /* CONFIG_BFQ_REDIRECT_TO_CONSOLE */ + +#if !defined(CONFIG_BLK_DEV_IO_TRACE) + +/* Avoid possible "unused-variable" warning. See commit message. */ + +#define bfq_log_bfqq(bfqd, bfqq, fmt, args...) ((void) (bfqq)) + +#define bfq_log_bfqg(bfqd, bfqg, fmt, args...) ((void) (bfqg)) + +#define bfq_log(bfqd, fmt, args...) do {} while (0) + +#else /* CONFIG_BLK_DEV_IO_TRACE */ + +#include + +#ifdef BFQ_GROUP_IOSCHED_ENABLED +static struct bfq_group *bfqq_group(struct bfq_queue *bfqq); +static struct blkcg_gq *bfqg_to_blkg(struct bfq_group *bfqg); + +#define bfq_log_bfqq(bfqd, bfqq, fmt, args...) do { \ + blk_add_trace_msg((bfqd)->queue, "bfq%d%c %s [%s] " fmt, \ + (bfqq)->pid, \ + bfq_bfqq_sync((bfqq)) ? 'S' : 'A', \ + bfqq_group(bfqq)->blkg_path, __func__, ##args); \ +} while (0) + +#define bfq_log_bfqg(bfqd, bfqg, fmt, args...) do { \ + blk_add_trace_msg((bfqd)->queue, "%s [%s] " fmt, bfqg->blkg_path, \ + __func__, ##args);\ +} while (0) + +#else /* BFQ_GROUP_IOSCHED_ENABLED */ + +#define bfq_log_bfqq(bfqd, bfqq, fmt, args...) \ + blk_add_trace_msg((bfqd)->queue, "bfq%d%c [%s] " fmt, (bfqq)->pid, \ + bfq_bfqq_sync((bfqq)) ? 'S' : 'A', \ + __func__, ##args) +#define bfq_log_bfqg(bfqd, bfqg, fmt, args...) do {} while (0) + +#endif /* BFQ_GROUP_IOSCHED_ENABLED */ + +#define bfq_log(bfqd, fmt, args...) \ + blk_add_trace_msg((bfqd)->queue, "bfq [%s] " fmt, __func__, ##args) + +#endif /* CONFIG_BLK_DEV_IO_TRACE */ +#endif /* CONFIG_BFQ_REDIRECT_TO_CONSOLE */ + +/* Expiration reasons. */ +enum bfqq_expiration { + BFQ_BFQQ_TOO_IDLE = 0, /* + * queue has been idling for + * too long + */ + BFQ_BFQQ_BUDGET_TIMEOUT, /* budget took too long to be used */ + BFQ_BFQQ_BUDGET_EXHAUSTED, /* budget consumed */ + BFQ_BFQQ_NO_MORE_REQUESTS, /* the queue has no more requests */ + BFQ_BFQQ_PREEMPTED /* preemption in progress */ +}; + + +struct bfqg_stats { +#if defined(BFQ_GROUP_IOSCHED_ENABLED) && defined(CONFIG_DEBUG_BLK_CGROUP) + /* number of ios merged */ + struct blkg_rwstat merged; + /* total time spent on device in ns, may not be accurate w/ queueing */ + struct blkg_rwstat service_time; + /* total time spent waiting in scheduler queue in ns */ + struct blkg_rwstat wait_time; + /* number of IOs queued up */ + struct blkg_rwstat queued; + /* total disk time and nr sectors dispatched by this group */ + struct blkg_stat time; + /* sum of number of ios queued across all samples */ + struct blkg_stat avg_queue_size_sum; + /* count of samples taken for average */ + struct blkg_stat avg_queue_size_samples; + /* how many times this group has been removed from service tree */ + struct blkg_stat dequeue; + /* total time spent waiting for it to be assigned a timeslice. */ + struct blkg_stat group_wait_time; + /* time spent idling for this blkcg_gq */ + struct blkg_stat idle_time; + /* total time with empty current active q with other requests queued */ + struct blkg_stat empty_time; + /* fields after this shouldn't be cleared on stat reset */ + uint64_t start_group_wait_time; + uint64_t start_idle_time; + uint64_t start_empty_time; + uint16_t flags; +#endif /* BFQ_GROUP_IOSCHED_ENABLED && CONFIG_DEBUG_BLK_CGROUP */ +}; + +#ifdef BFQ_GROUP_IOSCHED_ENABLED +/* + * struct bfq_group_data - per-blkcg storage for the blkio subsystem. + * + * @ps: @blkcg_policy_storage that this structure inherits + * @weight: weight of the bfq_group + */ +struct bfq_group_data { + /* must be the first member */ + struct blkcg_policy_data pd; + + unsigned int weight; +}; + +/** + * struct bfq_group - per (device, cgroup) data structure. + * @entity: schedulable entity to insert into the parent group sched_data. + * @sched_data: own sched_data, to contain child entities (they may be + * both bfq_queues and bfq_groups). + * @bfqd: the bfq_data for the device this group acts upon. + * @async_bfqq: array of async queues for all the tasks belonging to + * the group, one queue per ioprio value per ioprio_class, + * except for the idle class that has only one queue. + * @async_idle_bfqq: async queue for the idle class (ioprio is ignored). + * @my_entity: pointer to @entity, %NULL for the toplevel group; used + * to avoid too many special cases during group creation/ + * migration. + * @active_entities: number of active entities belonging to the group; + * unused for the root group. Used to know whether there + * are groups with more than one active @bfq_entity + * (see the comments to the function + * bfq_bfqq_may_idle()). + * @rq_pos_tree: rbtree sorted by next_request position, used when + * determining if two or more queues have interleaving + * requests (see bfq_find_close_cooperator()). + * + * Each (device, cgroup) pair has its own bfq_group, i.e., for each cgroup + * there is a set of bfq_groups, each one collecting the lower-level + * entities belonging to the group that are acting on the same device. + * + * Locking works as follows: + * o @bfqd is protected by the queue lock, RCU is used to access it + * from the readers. + * o All the other fields are protected by the @bfqd queue lock. + */ +struct bfq_group { + /* must be the first member */ + struct blkg_policy_data pd; + + /* cached path for this blkg (see comments in bfq_bic_update_cgroup) */ + char blkg_path[128]; + + /* reference counter (see comments in bfq_bic_update_cgroup) */ + int ref; + + struct bfq_entity entity; + struct bfq_sched_data sched_data; + + void *bfqd; + + struct bfq_queue *async_bfqq[2][IOPRIO_BE_NR]; + struct bfq_queue *async_idle_bfqq; + + struct bfq_entity *my_entity; + + int active_entities; + + struct rb_root rq_pos_tree; + + struct bfqg_stats stats; +}; + +#else +struct bfq_group { + struct bfq_sched_data sched_data; + + struct bfq_queue *async_bfqq[2][IOPRIO_BE_NR]; + struct bfq_queue *async_idle_bfqq; + + struct rb_root rq_pos_tree; +}; +#endif + +static struct bfq_queue *bfq_entity_to_bfqq(struct bfq_entity *entity); + +static unsigned int bfq_class_idx(struct bfq_entity *entity) +{ + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + + return bfqq ? bfqq->ioprio_class - 1 : + BFQ_DEFAULT_GRP_CLASS - 1; +} + +static struct bfq_service_tree * +bfq_entity_service_tree(struct bfq_entity *entity) +{ + struct bfq_sched_data *sched_data = entity->sched_data; + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + unsigned int idx = bfq_class_idx(entity); + + BUG_ON(idx >= BFQ_IOPRIO_CLASSES); + BUG_ON(sched_data == NULL); + + if (bfqq) + bfq_log_bfqq(bfqq->bfqd, bfqq, + "%p %d", + sched_data->service_tree + idx, idx); +#ifdef BFQ_GROUP_IOSCHED_ENABLED + else { + struct bfq_group *bfqg = + container_of(entity, struct bfq_group, entity); + + bfq_log_bfqg((struct bfq_data *)bfqg->bfqd, bfqg, + "%p %d", + sched_data->service_tree + idx, idx); + } +#endif + return sched_data->service_tree + idx; +} + +static struct bfq_queue *bic_to_bfqq(struct bfq_io_cq *bic, bool is_sync) +{ + return bic->bfqq[is_sync]; +} + +static void bic_set_bfqq(struct bfq_io_cq *bic, struct bfq_queue *bfqq, + bool is_sync) +{ + bic->bfqq[is_sync] = bfqq; +} + +static struct bfq_data *bic_to_bfqd(struct bfq_io_cq *bic) +{ + return bic->icq.q->elevator->elevator_data; +} + +#ifdef BFQ_GROUP_IOSCHED_ENABLED + +static struct bfq_group *bfq_bfqq_to_bfqg(struct bfq_queue *bfqq) +{ + struct bfq_entity *group_entity = bfqq->entity.parent; + + if (!group_entity) + group_entity = &bfqq->bfqd->root_group->entity; + + return container_of(group_entity, struct bfq_group, entity); +} + +#else + +static struct bfq_group *bfq_bfqq_to_bfqg(struct bfq_queue *bfqq) +{ + return bfqq->bfqd->root_group; +} + +#endif + +static void bfq_check_ioprio_change(struct bfq_io_cq *bic, struct bio *bio); +static void bfq_put_queue(struct bfq_queue *bfqq); +static struct bfq_queue *bfq_get_queue(struct bfq_data *bfqd, + struct bio *bio, bool is_sync, + struct bfq_io_cq *bic); +static void bfq_end_wr_async_queues(struct bfq_data *bfqd, + struct bfq_group *bfqg); +#ifdef BFQ_GROUP_IOSCHED_ENABLED +static void bfq_put_async_queues(struct bfq_data *bfqd, struct bfq_group *bfqg); +#endif +static void bfq_exit_bfqq(struct bfq_data *bfqd, struct bfq_queue *bfqq); + +#endif /* _BFQ_H */ diff --git a/block/bfq-sched.c b/block/bfq-sched.c new file mode 100644 index 00000000000..32d66282bec --- /dev/null +++ b/block/bfq-sched.c @@ -0,0 +1,2077 @@ +/* + * BFQ: Hierarchical B-WF2Q+ scheduler. + * + * Based on ideas and code from CFQ: + * Copyright (C) 2003 Jens Axboe + * + * Copyright (C) 2008 Fabio Checconi + * Paolo Valente + * + * Copyright (C) 2015 Paolo Valente + * + * Copyright (C) 2016 Paolo Valente + */ + +static struct bfq_group *bfqq_group(struct bfq_queue *bfqq); + +/** + * bfq_gt - compare two timestamps. + * @a: first ts. + * @b: second ts. + * + * Return @a > @b, dealing with wrapping correctly. + */ +static int bfq_gt(u64 a, u64 b) +{ + return (s64)(a - b) > 0; +} + +static struct bfq_entity *bfq_root_active_entity(struct rb_root *tree) +{ + struct rb_node *node = tree->rb_node; + + return rb_entry(node, struct bfq_entity, rb_node); +} + +static struct bfq_entity *bfq_lookup_next_entity(struct bfq_sched_data *sd, + bool expiration); + +static bool bfq_update_parent_budget(struct bfq_entity *next_in_service); + +/** + * bfq_update_next_in_service - update sd->next_in_service + * @sd: sched_data for which to perform the update. + * @new_entity: if not NULL, pointer to the entity whose activation, + * requeueing or repositionig triggered the invocation of + * this function. + * @expiration: id true, this function is being invoked after the + * expiration of the in-service entity + * + * This function is called to update sd->next_in_service, which, in + * its turn, may change as a consequence of the insertion or + * extraction of an entity into/from one of the active trees of + * sd. These insertions/extractions occur as a consequence of + * activations/deactivations of entities, with some activations being + * 'true' activations, and other activations being requeueings (i.e., + * implementing the second, requeueing phase of the mechanism used to + * reposition an entity in its active tree; see comments on + * __bfq_activate_entity and __bfq_requeue_entity for details). In + * both the last two activation sub-cases, new_entity points to the + * just activated or requeued entity. + * + * Returns true if sd->next_in_service changes in such a way that + * entity->parent may become the next_in_service for its parent + * entity. + */ +static bool bfq_update_next_in_service(struct bfq_sched_data *sd, + struct bfq_entity *new_entity, + bool expiration) +{ + struct bfq_entity *next_in_service = sd->next_in_service; + struct bfq_queue *bfqq; + bool parent_sched_may_change = false; + bool change_without_lookup = false; + + /* + * If this update is triggered by the activation, requeueing + * or repositiong of an entity that does not coincide with + * sd->next_in_service, then a full lookup in the active tree + * can be avoided. In fact, it is enough to check whether the + * just-modified entity has the same priority as + * sd->next_in_service, is eligible and has a lower virtual + * finish time than sd->next_in_service. If this compound + * condition holds, then the new entity becomes the new + * next_in_service. Otherwise no change is needed. + */ + if (new_entity && new_entity != sd->next_in_service) { + /* + * Flag used to decide whether to replace + * sd->next_in_service with new_entity. Tentatively + * set to true, and left as true if + * sd->next_in_service is NULL. + */ + change_without_lookup = true; + + /* + * If there is already a next_in_service candidate + * entity, then compare timestamps to decide whether + * to replace sd->service_tree with new_entity. + */ + if (next_in_service) { + unsigned int new_entity_class_idx = + bfq_class_idx(new_entity); + struct bfq_service_tree *st = + sd->service_tree + new_entity_class_idx; + + change_without_lookup = + (new_entity_class_idx == + bfq_class_idx(next_in_service) + && + !bfq_gt(new_entity->start, st->vtime) + && + bfq_gt(next_in_service->finish, + new_entity->finish)); + } + + if (change_without_lookup) { + next_in_service = new_entity; + bfqq = bfq_entity_to_bfqq(next_in_service); + + if (bfqq) + bfq_log_bfqq(bfqq->bfqd, bfqq, + "chose without lookup"); +#ifdef BFQ_GROUP_IOSCHED_ENABLED + else { + struct bfq_group *bfqg = + container_of(next_in_service, + struct bfq_group, entity); + + bfq_log_bfqg((struct bfq_data*)bfqg->bfqd, bfqg, + "chose without lookup"); + } +#endif + } + } + + if (!change_without_lookup) /* lookup needed */ + next_in_service = bfq_lookup_next_entity(sd, expiration); + + if (next_in_service) { + bool new_budget_triggers_change = + bfq_update_parent_budget(next_in_service); + + parent_sched_may_change = !sd->next_in_service || + new_budget_triggers_change; + } + + sd->next_in_service = next_in_service; + + if (!next_in_service) + return parent_sched_may_change; + + bfqq = bfq_entity_to_bfqq(next_in_service); + if (bfqq) + bfq_log_bfqq(bfqq->bfqd, bfqq, + "chosen this queue"); +#ifdef BFQ_GROUP_IOSCHED_ENABLED + else { + struct bfq_group *bfqg = + container_of(next_in_service, + struct bfq_group, entity); + + bfq_log_bfqg((struct bfq_data *)bfqg->bfqd, bfqg, + "chosen this entity"); + } +#endif + return parent_sched_may_change; +} + +#ifdef BFQ_GROUP_IOSCHED_ENABLED +/* both next loops stop at one of the child entities of the root group */ +#define for_each_entity(entity) \ + for (; entity ; entity = entity->parent) + +/* + * For each iteration, compute parent in advance, so as to be safe if + * entity is deallocated during the iteration. Such a deallocation may + * happen as a consequence of a bfq_put_queue that frees the bfq_queue + * containing entity. + */ +#define for_each_entity_safe(entity, parent) \ + for (; entity && ({ parent = entity->parent; 1; }); entity = parent) + +/* + * Returns true if this budget changes may let next_in_service->parent + * become the next_in_service entity for its parent entity. + */ +static bool bfq_update_parent_budget(struct bfq_entity *next_in_service) +{ + struct bfq_entity *bfqg_entity; + struct bfq_group *bfqg; + struct bfq_sched_data *group_sd; + bool ret = false; + + BUG_ON(!next_in_service); + + group_sd = next_in_service->sched_data; + + bfqg = container_of(group_sd, struct bfq_group, sched_data); + /* + * bfq_group's my_entity field is not NULL only if the group + * is not the root group. We must not touch the root entity + * as it must never become an in-service entity. + */ + bfqg_entity = bfqg->my_entity; + if (bfqg_entity) { + if (bfqg_entity->budget > next_in_service->budget) + ret = true; + bfq_log_bfqg((struct bfq_data *)bfqg->bfqd, bfqg, + "old budg: %d, new budg: %d", + bfqg_entity->budget, next_in_service->budget); + bfqg_entity->budget = next_in_service->budget; + } + + return ret; +} + +/* + * This function tells whether entity stops being a candidate for next + * service, according to the restrictive definition of the field + * next_in_service. In particular, this function is invoked for an + * entity that is about to be set in service. + * + * If entity is a queue, then the entity is no longer a candidate for + * next service according to the that definition, because entity is + * about to become the in-service queue. This function then returns + * true if entity is a queue. + * + * In contrast, entity could still be a candidate for next service if + * it is not a queue, and has more than one active child. In fact, + * even if one of its children is about to be set in service, other + * active children may still be the next to serve, for the parent + * entity, even according to the above definition. As a consequence, a + * non-queue entity is not a candidate for next-service only if it has + * only one active child. And only if this condition holds, then this + * function returns true for a non-queue entity. + */ +static bool bfq_no_longer_next_in_service(struct bfq_entity *entity) +{ + struct bfq_group *bfqg; + + if (bfq_entity_to_bfqq(entity)) + return true; + + bfqg = container_of(entity, struct bfq_group, entity); + + BUG_ON(bfqg == ((struct bfq_data *)(bfqg->bfqd))->root_group); + BUG_ON(bfqg->active_entities == 0); + /* + * The field active_entities does not always contain the + * actual number of active children entities: it happens to + * not account for the in-service entity in case the latter is + * removed from its active tree (which may get done after + * invoking the function bfq_no_longer_next_in_service in + * bfq_get_next_queue). Fortunately, here, i.e., while + * bfq_no_longer_next_in_service is not yet completed in + * bfq_get_next_queue, bfq_active_extract has not yet been + * invoked, and thus active_entities still coincides with the + * actual number of active entities. + */ + if (bfqg->active_entities == 1) + return true; + + return false; +} + +#else /* BFQ_GROUP_IOSCHED_ENABLED */ +#define for_each_entity(entity) \ + for (; entity ; entity = NULL) + +#define for_each_entity_safe(entity, parent) \ + for (parent = NULL; entity ; entity = parent) + +static bool bfq_update_parent_budget(struct bfq_entity *next_in_service) +{ + return false; +} + +static bool bfq_no_longer_next_in_service(struct bfq_entity *entity) +{ + return true; +} + +#endif /* BFQ_GROUP_IOSCHED_ENABLED */ + +/* + * Shift for timestamp calculations. This actually limits the maximum + * service allowed in one timestamp delta (small shift values increase it), + * the maximum total weight that can be used for the queues in the system + * (big shift values increase it), and the period of virtual time + * wraparounds. + */ +#define WFQ_SERVICE_SHIFT 22 + +static struct bfq_queue *bfq_entity_to_bfqq(struct bfq_entity *entity) +{ + struct bfq_queue *bfqq = NULL; + + BUG_ON(!entity); + + if (!entity->my_sched_data) + bfqq = container_of(entity, struct bfq_queue, entity); + + return bfqq; +} + + +/** + * bfq_delta - map service into the virtual time domain. + * @service: amount of service. + * @weight: scale factor (weight of an entity or weight sum). + */ +static u64 bfq_delta(unsigned long service, unsigned long weight) +{ + u64 d = (u64)service << WFQ_SERVICE_SHIFT; + + do_div(d, weight); + return d; +} + +/** + * bfq_calc_finish - assign the finish time to an entity. + * @entity: the entity to act upon. + * @service: the service to be charged to the entity. + */ +static void bfq_calc_finish(struct bfq_entity *entity, unsigned long service) +{ + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + unsigned long long start, finish, delta; + + BUG_ON(entity->weight == 0); + + entity->finish = entity->start + + bfq_delta(service, entity->weight); + + start = ((entity->start>>10)*1000)>>12; + finish = ((entity->finish>>10)*1000)>>12; + delta = ((bfq_delta(service, entity->weight)>>10)*1000)>>12; + + if (bfqq) { + bfq_log_bfqq(bfqq->bfqd, bfqq, + "serv %lu, w %d", + service, entity->weight); + bfq_log_bfqq(bfqq->bfqd, bfqq, + "start %llu, finish %llu, delta %llu", + start, finish, delta); +#ifdef BFQ_GROUP_IOSCHED_ENABLED + } else { + struct bfq_group *bfqg = + container_of(entity, struct bfq_group, entity); + + bfq_log_bfqg((struct bfq_data *)bfqg->bfqd, bfqg, + "group: serv %lu, w %d", + service, entity->weight); + bfq_log_bfqg((struct bfq_data *)bfqg->bfqd, bfqg, + "group: start %llu, finish %llu, delta %llu", + start, finish, delta); +#endif + } +} + +/** + * bfq_entity_of - get an entity from a node. + * @node: the node field of the entity. + * + * Convert a node pointer to the relative entity. This is used only + * to simplify the logic of some functions and not as the generic + * conversion mechanism because, e.g., in the tree walking functions, + * the check for a %NULL value would be redundant. + */ +static struct bfq_entity *bfq_entity_of(struct rb_node *node) +{ + struct bfq_entity *entity = NULL; + + if (node) + entity = rb_entry(node, struct bfq_entity, rb_node); + + return entity; +} + +/** + * bfq_extract - remove an entity from a tree. + * @root: the tree root. + * @entity: the entity to remove. + */ +static void bfq_extract(struct rb_root *root, struct bfq_entity *entity) +{ + BUG_ON(entity->tree != root); + + entity->tree = NULL; + rb_erase(&entity->rb_node, root); +} + +/** + * bfq_idle_extract - extract an entity from the idle tree. + * @st: the service tree of the owning @entity. + * @entity: the entity being removed. + */ +static void bfq_idle_extract(struct bfq_service_tree *st, + struct bfq_entity *entity) +{ + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + struct rb_node *next; + + BUG_ON(entity->tree != &st->idle); + + if (entity == st->first_idle) { + next = rb_next(&entity->rb_node); + st->first_idle = bfq_entity_of(next); + } + + if (entity == st->last_idle) { + next = rb_prev(&entity->rb_node); + st->last_idle = bfq_entity_of(next); + } + + bfq_extract(&st->idle, entity); + + if (bfqq) + list_del(&bfqq->bfqq_list); +} + +/** + * bfq_insert - generic tree insertion. + * @root: tree root. + * @entity: entity to insert. + * + * This is used for the idle and the active tree, since they are both + * ordered by finish time. + */ +static void bfq_insert(struct rb_root *root, struct bfq_entity *entity) +{ + struct bfq_entity *entry; + struct rb_node **node = &root->rb_node; + struct rb_node *parent = NULL; + + BUG_ON(entity->tree); + + while (*node) { + parent = *node; + entry = rb_entry(parent, struct bfq_entity, rb_node); + + if (bfq_gt(entry->finish, entity->finish)) + node = &parent->rb_left; + else + node = &parent->rb_right; + } + + rb_link_node(&entity->rb_node, parent, node); + rb_insert_color(&entity->rb_node, root); + + entity->tree = root; +} + +/** + * bfq_update_min - update the min_start field of a entity. + * @entity: the entity to update. + * @node: one of its children. + * + * This function is called when @entity may store an invalid value for + * min_start due to updates to the active tree. The function assumes + * that the subtree rooted at @node (which may be its left or its right + * child) has a valid min_start value. + */ +static void bfq_update_min(struct bfq_entity *entity, struct rb_node *node) +{ + struct bfq_entity *child; + + if (node) { + child = rb_entry(node, struct bfq_entity, rb_node); + if (bfq_gt(entity->min_start, child->min_start)) + entity->min_start = child->min_start; + } +} + +/** + * bfq_update_active_node - recalculate min_start. + * @node: the node to update. + * + * @node may have changed position or one of its children may have moved, + * this function updates its min_start value. The left and right subtrees + * are assumed to hold a correct min_start value. + */ +static void bfq_update_active_node(struct rb_node *node) +{ + struct bfq_entity *entity = rb_entry(node, struct bfq_entity, rb_node); + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + + entity->min_start = entity->start; + bfq_update_min(entity, node->rb_right); + bfq_update_min(entity, node->rb_left); + + if (bfqq) { + bfq_log_bfqq(bfqq->bfqd, bfqq, + "new min_start %llu", + ((entity->min_start>>10)*1000)>>12); +#ifdef BFQ_GROUP_IOSCHED_ENABLED + } else { + struct bfq_group *bfqg = + container_of(entity, struct bfq_group, entity); + + bfq_log_bfqg((struct bfq_data *)bfqg->bfqd, bfqg, + "new min_start %llu", + ((entity->min_start>>10)*1000)>>12); +#endif + } +} + +/** + * bfq_update_active_tree - update min_start for the whole active tree. + * @node: the starting node. + * + * @node must be the deepest modified node after an update. This function + * updates its min_start using the values held by its children, assuming + * that they did not change, and then updates all the nodes that may have + * changed in the path to the root. The only nodes that may have changed + * are the ones in the path or their siblings. + */ +static void bfq_update_active_tree(struct rb_node *node) +{ + struct rb_node *parent; + +up: + bfq_update_active_node(node); + + parent = rb_parent(node); + if (!parent) + return; + + if (node == parent->rb_left && parent->rb_right) + bfq_update_active_node(parent->rb_right); + else if (parent->rb_left) + bfq_update_active_node(parent->rb_left); + + node = parent; + goto up; +} + +static void bfq_weights_tree_add(struct bfq_data *bfqd, + struct bfq_entity *entity, + struct rb_root *root); + +static void __bfq_weights_tree_remove(struct bfq_data *bfqd, + struct bfq_entity *entity, + struct rb_root *root); + +static void bfq_weights_tree_remove(struct bfq_data *bfqd, + struct bfq_queue *bfqq); + + +/** + * bfq_active_insert - insert an entity in the active tree of its + * group/device. + * @st: the service tree of the entity. + * @entity: the entity being inserted. + * + * The active tree is ordered by finish time, but an extra key is kept + * per each node, containing the minimum value for the start times of + * its children (and the node itself), so it's possible to search for + * the eligible node with the lowest finish time in logarithmic time. + */ +static void bfq_active_insert(struct bfq_service_tree *st, + struct bfq_entity *entity) +{ + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + struct rb_node *node = &entity->rb_node; +#ifdef BFQ_GROUP_IOSCHED_ENABLED + struct bfq_sched_data *sd = NULL; + struct bfq_group *bfqg = NULL; + struct bfq_data *bfqd = NULL; +#endif + + bfq_insert(&st->active, entity); + + if (node->rb_left) + node = node->rb_left; + else if (node->rb_right) + node = node->rb_right; + + bfq_update_active_tree(node); + +#ifdef BFQ_GROUP_IOSCHED_ENABLED + sd = entity->sched_data; + bfqg = container_of(sd, struct bfq_group, sched_data); + BUG_ON(!bfqg); + bfqd = (struct bfq_data *)bfqg->bfqd; +#endif + if (bfqq) + list_add(&bfqq->bfqq_list, &bfqq->bfqd->active_list); +#ifdef BFQ_GROUP_IOSCHED_ENABLED + if (bfqg != bfqd->root_group) { + BUG_ON(!bfqg); + BUG_ON(!bfqd); + bfqg->active_entities++; + } +#endif +} + +/** + * bfq_ioprio_to_weight - calc a weight from an ioprio. + * @ioprio: the ioprio value to convert. + */ +static unsigned short bfq_ioprio_to_weight(int ioprio) +{ + BUG_ON(ioprio < 0 || ioprio >= IOPRIO_BE_NR); + return (IOPRIO_BE_NR - ioprio) * BFQ_WEIGHT_CONVERSION_COEFF; +} + +/** + * bfq_weight_to_ioprio - calc an ioprio from a weight. + * @weight: the weight value to convert. + * + * To preserve as much as possible the old only-ioprio user interface, + * 0 is used as an escape ioprio value for weights (numerically) equal or + * larger than IOPRIO_BE_NR * BFQ_WEIGHT_CONVERSION_COEFF. + */ +static unsigned short bfq_weight_to_ioprio(int weight) +{ + BUG_ON(weight < BFQ_MIN_WEIGHT || weight > BFQ_MAX_WEIGHT); + return IOPRIO_BE_NR * BFQ_WEIGHT_CONVERSION_COEFF - weight < 0 ? + 0 : IOPRIO_BE_NR * BFQ_WEIGHT_CONVERSION_COEFF - weight; +} + +static void bfq_get_entity(struct bfq_entity *entity) +{ + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + + if (bfqq) { + bfqq->ref++; + bfq_log_bfqq(bfqq->bfqd, bfqq, "%p %d", + bfqq, bfqq->ref); + } +} + +/** + * bfq_find_deepest - find the deepest node that an extraction can modify. + * @node: the node being removed. + * + * Do the first step of an extraction in an rb tree, looking for the + * node that will replace @node, and returning the deepest node that + * the following modifications to the tree can touch. If @node is the + * last node in the tree return %NULL. + */ +static struct rb_node *bfq_find_deepest(struct rb_node *node) +{ + struct rb_node *deepest; + + if (!node->rb_right && !node->rb_left) + deepest = rb_parent(node); + else if (!node->rb_right) + deepest = node->rb_left; + else if (!node->rb_left) + deepest = node->rb_right; + else { + deepest = rb_next(node); + if (deepest->rb_right) + deepest = deepest->rb_right; + else if (rb_parent(deepest) != node) + deepest = rb_parent(deepest); + } + + return deepest; +} + +/** + * bfq_active_extract - remove an entity from the active tree. + * @st: the service_tree containing the tree. + * @entity: the entity being removed. + */ +static void bfq_active_extract(struct bfq_service_tree *st, + struct bfq_entity *entity) +{ + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + struct rb_node *node; +#ifdef BFQ_GROUP_IOSCHED_ENABLED + struct bfq_sched_data *sd = NULL; + struct bfq_group *bfqg = NULL; + struct bfq_data *bfqd = NULL; +#endif + + node = bfq_find_deepest(&entity->rb_node); + bfq_extract(&st->active, entity); + + if (node) + bfq_update_active_tree(node); + +#ifdef BFQ_GROUP_IOSCHED_ENABLED + sd = entity->sched_data; + bfqg = container_of(sd, struct bfq_group, sched_data); + BUG_ON(!bfqg); + bfqd = (struct bfq_data *)bfqg->bfqd; +#endif + if (bfqq) + list_del(&bfqq->bfqq_list); +#ifdef BFQ_GROUP_IOSCHED_ENABLED + if (bfqg != bfqd->root_group) { + BUG_ON(!bfqg); + BUG_ON(!bfqd); + BUG_ON(!bfqg->active_entities); + bfqg->active_entities--; + } +#endif +} + +/** + * bfq_idle_insert - insert an entity into the idle tree. + * @st: the service tree containing the tree. + * @entity: the entity to insert. + */ +static void bfq_idle_insert(struct bfq_service_tree *st, + struct bfq_entity *entity) +{ + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + struct bfq_entity *first_idle = st->first_idle; + struct bfq_entity *last_idle = st->last_idle; + + if (!first_idle || bfq_gt(first_idle->finish, entity->finish)) + st->first_idle = entity; + if (!last_idle || bfq_gt(entity->finish, last_idle->finish)) + st->last_idle = entity; + + bfq_insert(&st->idle, entity); + + if (bfqq) + list_add(&bfqq->bfqq_list, &bfqq->bfqd->idle_list); +} + +/** + * bfq_forget_entity - do not consider entity any longer for scheduling + * @st: the service tree. + * @entity: the entity being removed. + * @is_in_service: true if entity is currently the in-service entity. + * + * Forget everything about @entity. In addition, if entity represents + * a queue, and the latter is not in service, then release the service + * reference to the queue (the one taken through bfq_get_entity). In + * fact, in this case, there is really no more service reference to + * the queue, as the latter is also outside any service tree. If, + * instead, the queue is in service, then __bfq_bfqd_reset_in_service + * will take care of putting the reference when the queue finally + * stops being served. + */ +static void bfq_forget_entity(struct bfq_service_tree *st, + struct bfq_entity *entity, + bool is_in_service) +{ + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + BUG_ON(!entity->on_st); + + entity->on_st = false; + st->wsum -= entity->weight; + if (bfqq && !is_in_service) { + bfq_log_bfqq(bfqq->bfqd, bfqq, "(before): %p %d", + bfqq, bfqq->ref); + bfq_put_queue(bfqq); + } +} + +/** + * bfq_put_idle_entity - release the idle tree ref of an entity. + * @st: service tree for the entity. + * @entity: the entity being released. + */ +static void bfq_put_idle_entity(struct bfq_service_tree *st, + struct bfq_entity *entity) +{ + bfq_idle_extract(st, entity); + bfq_forget_entity(st, entity, + entity == entity->sched_data->in_service_entity); +} + +/** + * bfq_forget_idle - update the idle tree if necessary. + * @st: the service tree to act upon. + * + * To preserve the global O(log N) complexity we only remove one entry here; + * as the idle tree will not grow indefinitely this can be done safely. + */ +static void bfq_forget_idle(struct bfq_service_tree *st) +{ + struct bfq_entity *first_idle = st->first_idle; + struct bfq_entity *last_idle = st->last_idle; + + if (RB_EMPTY_ROOT(&st->active) && last_idle && + !bfq_gt(last_idle->finish, st->vtime)) { + /* + * Forget the whole idle tree, increasing the vtime past + * the last finish time of idle entities. + */ + st->vtime = last_idle->finish; + } + + if (first_idle && !bfq_gt(first_idle->finish, st->vtime)) + bfq_put_idle_entity(st, first_idle); +} + +/* + * Update weight and priority of entity. If update_class_too is true, + * then update the ioprio_class of entity too. + * + * The reason why the update of ioprio_class is controlled through the + * last parameter is as follows. Changing the ioprio class of an + * entity implies changing the destination service trees for that + * entity. If such a change occurred when the entity is already on one + * of the service trees for its previous class, then the state of the + * entity would become more complex: none of the new possible service + * trees for the entity, according to bfq_entity_service_tree(), would + * match any of the possible service trees on which the entity + * is. Complex operations involving these trees, such as entity + * activations and deactivations, should take into account this + * additional complexity. To avoid this issue, this function is + * invoked with update_class_too unset in the points in the code where + * entity may happen to be on some tree. + */ +static struct bfq_service_tree * +__bfq_entity_update_weight_prio(struct bfq_service_tree *old_st, + struct bfq_entity *entity, + bool update_class_too) +{ + struct bfq_service_tree *new_st = old_st; + + if (entity->prio_changed) { + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + unsigned int prev_weight, new_weight; + struct bfq_data *bfqd = NULL; + struct rb_root *root; +#ifdef BFQ_GROUP_IOSCHED_ENABLED + struct bfq_sched_data *sd; + struct bfq_group *bfqg; +#endif + + if (bfqq) + bfqd = bfqq->bfqd; +#ifdef BFQ_GROUP_IOSCHED_ENABLED + else { + sd = entity->my_sched_data; + bfqg = container_of(sd, struct bfq_group, sched_data); + BUG_ON(!bfqg); + bfqd = (struct bfq_data *)bfqg->bfqd; + BUG_ON(!bfqd); + } +#endif + + BUG_ON(entity->tree && update_class_too); + BUG_ON(old_st->wsum < entity->weight); + old_st->wsum -= entity->weight; + + if (entity->new_weight != entity->orig_weight) { + if (entity->new_weight < BFQ_MIN_WEIGHT || + entity->new_weight > BFQ_MAX_WEIGHT) { + pr_crit("update_weight_prio: new_weight %d\n", + entity->new_weight); + if (entity->new_weight < BFQ_MIN_WEIGHT) + entity->new_weight = BFQ_MIN_WEIGHT; + else + entity->new_weight = BFQ_MAX_WEIGHT; + } + entity->orig_weight = entity->new_weight; + if (bfqq) + bfqq->ioprio = + bfq_weight_to_ioprio(entity->orig_weight); + } + + if (bfqq && update_class_too) + bfqq->ioprio_class = bfqq->new_ioprio_class; + + /* + * Reset prio_changed only if the ioprio_class change + * is not pending any longer. + */ + if (!bfqq || bfqq->ioprio_class == bfqq->new_ioprio_class) + entity->prio_changed = 0; + + /* + * NOTE: here we may be changing the weight too early, + * this will cause unfairness. The correct approach + * would have required additional complexity to defer + * weight changes to the proper time instants (i.e., + * when entity->finish <= old_st->vtime). + */ + new_st = bfq_entity_service_tree(entity); + + prev_weight = entity->weight; + new_weight = entity->orig_weight * + (bfqq ? bfqq->wr_coeff : 1); + /* + * If the weight of the entity changes, remove the entity + * from its old weight counter (if there is a counter + * associated with the entity), and add it to the counter + * associated with its new weight. + */ + if (prev_weight != new_weight) { + if (bfqq) + bfq_log_bfqq(bfqq->bfqd, bfqq, + "weight changed %d %d(%d %d)", + prev_weight, new_weight, + entity->orig_weight, + bfqq->wr_coeff); + + root = bfqq ? &bfqd->queue_weights_tree : + &bfqd->group_weights_tree; + __bfq_weights_tree_remove(bfqd, entity, root); + } + entity->weight = new_weight; + /* + * Add the entity to its weights tree only if it is + * not associated with a weight-raised queue. + */ + if (prev_weight != new_weight && + (bfqq ? bfqq->wr_coeff == 1 : 1)) + /* If we get here, root has been initialized. */ + bfq_weights_tree_add(bfqd, entity, root); + + new_st->wsum += entity->weight; + + if (new_st != old_st) { + BUG_ON(!update_class_too); + entity->start = new_st->vtime; + } + } + + return new_st; +} + +#ifdef BFQ_GROUP_IOSCHED_ENABLED +static void bfqg_stats_set_start_empty_time(struct bfq_group *bfqg); +#endif + +/** + * bfq_bfqq_served - update the scheduler status after selection for + * service. + * @bfqq: the queue being served. + * @served: bytes to transfer. + * + * NOTE: this can be optimized, as the timestamps of upper level entities + * are synchronized every time a new bfqq is selected for service. By now, + * we keep it to better check consistency. + */ +static void bfq_bfqq_served(struct bfq_queue *bfqq, int served) +{ + struct bfq_entity *entity = &bfqq->entity; + struct bfq_service_tree *st; + + if (!bfqq->service_from_backlogged) + bfqq->first_IO_time = jiffies; + + if (bfqq->wr_coeff > 1) + bfqq->service_from_wr += served; + + bfqq->service_from_backlogged += served; + for_each_entity(entity) { + st = bfq_entity_service_tree(entity); + + entity->service += served; + + BUG_ON(st->wsum == 0); + + st->vtime += bfq_delta(served, st->wsum); + bfq_forget_idle(st); + } +#ifndef BFQ_MQ +#ifdef BFQ_GROUP_IOSCHED_ENABLED + bfqg_stats_set_start_empty_time(bfqq_group(bfqq)); +#endif +#endif + st = bfq_entity_service_tree(&bfqq->entity); + bfq_log_bfqq(bfqq->bfqd, bfqq, "bfqq_served %d secs, vtime %llu on %p", + served, ((st->vtime>>10)*1000)>>12, st); +} + +/** + * bfq_bfqq_charge_time - charge an amount of service equivalent to the length + * of the time interval during which bfqq has been in + * service. + * @bfqd: the device + * @bfqq: the queue that needs a service update. + * @time_ms: the amount of time during which the queue has received service + * + * If a queue does not consume its budget fast enough, then providing + * the queue with service fairness may impair throughput, more or less + * severely. For this reason, queues that consume their budget slowly + * are provided with time fairness instead of service fairness. This + * goal is achieved through the BFQ scheduling engine, even if such an + * engine works in the service, and not in the time domain. The trick + * is charging these queues with an inflated amount of service, equal + * to the amount of service that they would have received during their + * service slot if they had been fast, i.e., if their requests had + * been dispatched at a rate equal to the estimated peak rate. + * + * It is worth noting that time fairness can cause important + * distortions in terms of bandwidth distribution, on devices with + * internal queueing. The reason is that I/O requests dispatched + * during the service slot of a queue may be served after that service + * slot is finished, and may have a total processing time loosely + * correlated with the duration of the service slot. This is + * especially true for short service slots. + */ +static void bfq_bfqq_charge_time(struct bfq_data *bfqd, struct bfq_queue *bfqq, + unsigned long time_ms) +{ + struct bfq_entity *entity = &bfqq->entity; + unsigned long timeout_ms = jiffies_to_msecs(bfq_timeout); + unsigned long bounded_time_ms = min(time_ms, timeout_ms); + int serv_to_charge_for_time = + (bfqd->bfq_max_budget * bounded_time_ms) / timeout_ms; + int tot_serv_to_charge = max(serv_to_charge_for_time, entity->service); + + bfq_log_bfqq(bfqq->bfqd, bfqq, + "%lu/%lu ms, %d/%d/%d/%d sectors", + time_ms, timeout_ms, + entity->service, + tot_serv_to_charge, + bfqd->bfq_max_budget, + entity->budget); + + /* Increase budget to avoid inconsistencies */ + if (tot_serv_to_charge > entity->budget) + entity->budget = tot_serv_to_charge; + + bfq_bfqq_served(bfqq, + max_t(int, 0, tot_serv_to_charge - entity->service)); +} + +static void bfq_update_fin_time_enqueue(struct bfq_entity *entity, + struct bfq_service_tree *st, + bool backshifted) +{ + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + struct bfq_sched_data *sd = entity->sched_data; + + /* + * When this function is invoked, entity is not in any service + * tree, then it is safe to invoke next function with the last + * parameter set (see the comments on the function). + */ + BUG_ON(entity->tree); + st = __bfq_entity_update_weight_prio(st, entity, true); + bfq_calc_finish(entity, entity->budget); + + /* + * If some queues enjoy backshifting for a while, then their + * (virtual) finish timestamps may happen to become lower and + * lower than the system virtual time. In particular, if + * these queues often happen to be idle for short time + * periods, and during such time periods other queues with + * higher timestamps happen to be busy, then the backshifted + * timestamps of the former queues can become much lower than + * the system virtual time. In fact, to serve the queues with + * higher timestamps while the ones with lower timestamps are + * idle, the system virtual time may be pushed-up to much + * higher values than the finish timestamps of the idle + * queues. As a consequence, the finish timestamps of all new + * or newly activated queues may end up being much larger than + * those of lucky queues with backshifted timestamps. The + * latter queues may then monopolize the device for a lot of + * time. This would simply break service guarantees. + * + * To reduce this problem, push up a little bit the + * backshifted timestamps of the queue associated with this + * entity (only a queue can happen to have the backshifted + * flag set): just enough to let the finish timestamp of the + * queue be equal to the current value of the system virtual + * time. This may introduce a little unfairness among queues + * with backshifted timestamps, but it does not break + * worst-case fairness guarantees. + * + * As a special case, if bfqq is weight-raised, push up + * timestamps much less, to keep very low the probability that + * this push up causes the backshifted finish timestamps of + * weight-raised queues to become higher than the backshifted + * finish timestamps of non weight-raised queues. + */ + if (backshifted && bfq_gt(st->vtime, entity->finish)) { + unsigned long delta = st->vtime - entity->finish; + + if (bfqq) + delta /= bfqq->wr_coeff; + + entity->start += delta; + entity->finish += delta; + + if (bfqq) { + bfq_log_bfqq(bfqq->bfqd, bfqq, + "new queue finish %llu", + ((entity->finish>>10)*1000)>>12); +#ifdef BFQ_GROUP_IOSCHED_ENABLED + } else { + struct bfq_group *bfqg = + container_of(entity, struct bfq_group, entity); + + bfq_log_bfqg((struct bfq_data *)bfqg->bfqd, bfqg, + "new group finish %llu", + ((entity->finish>>10)*1000)>>12); +#endif + } + } + + bfq_active_insert(st, entity); + + if (bfqq) { + bfq_log_bfqq(bfqq->bfqd, bfqq, + "queue %seligible in st %p", + entity->start <= st->vtime ? "" : "non ", st); +#ifdef BFQ_GROUP_IOSCHED_ENABLED + } else { + struct bfq_group *bfqg = + container_of(entity, struct bfq_group, entity); + + bfq_log_bfqg((struct bfq_data *)bfqg->bfqd, bfqg, + "group %seligible in st %p", + entity->start <= st->vtime ? "" : "non ", st); +#endif + } + BUG_ON(RB_EMPTY_ROOT(&st->active)); + BUG_ON(&st->active != &sd->service_tree->active && + &st->active != &(sd->service_tree+1)->active && + &st->active != &(sd->service_tree+2)->active); +} + +/** + * __bfq_activate_entity - handle activation of entity. + * @entity: the entity being activated. + * @non_blocking_wait_rq: true if entity was waiting for a request + * + * Called for a 'true' activation, i.e., if entity is not active and + * one of its children receives a new request. + * + * Basically, this function updates the timestamps of entity and + * inserts entity into its active tree, after possibly extracting it + * from its idle tree. + */ +static void __bfq_activate_entity(struct bfq_entity *entity, + bool non_blocking_wait_rq) +{ + struct bfq_sched_data *sd = entity->sched_data; + struct bfq_service_tree *st = bfq_entity_service_tree(entity); + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + bool backshifted = false; + unsigned long long min_vstart; + + BUG_ON(!sd); + BUG_ON(!st); + + /* See comments on bfq_fqq_update_budg_for_activation */ + if (non_blocking_wait_rq && bfq_gt(st->vtime, entity->finish)) { + backshifted = true; + min_vstart = entity->finish; + } else + min_vstart = st->vtime; + + if (entity->tree == &st->idle) { + /* + * Must be on the idle tree, bfq_idle_extract() will + * check for that. + */ + bfq_idle_extract(st, entity); + BUG_ON(entity->tree); + entity->start = bfq_gt(min_vstart, entity->finish) ? + min_vstart : entity->finish; + } else { + BUG_ON(entity->tree); + /* + * The finish time of the entity may be invalid, and + * it is in the past for sure, otherwise the queue + * would have been on the idle tree. + */ + entity->start = min_vstart; + st->wsum += entity->weight; + /* + * entity is about to be inserted into a service tree, + * and then set in service: get a reference to make + * sure entity does not disappear until it is no + * longer in service or scheduled for service. + */ + bfq_get_entity(entity); + + BUG_ON(entity->on_st && bfqq); + +#ifdef BFQ_GROUP_IOSCHED_ENABLED + if (entity->on_st && !bfqq) { + struct bfq_group *bfqg = + container_of(entity, struct bfq_group, + entity); + + bfq_log_bfqg((struct bfq_data *)bfqg->bfqd, + bfqg, + "activate bug, class %d in_service %p", + bfq_class_idx(entity), sd->in_service_entity); + } +#endif + BUG_ON(entity->on_st && !bfqq); + entity->on_st = true; + } + +#ifdef BFQ_GROUP_IOSCHED_ENABLED + if (!bfq_entity_to_bfqq(entity)) { /* bfq_group */ + struct bfq_group *bfqg = + container_of(entity, struct bfq_group, entity); + struct bfq_data *bfqd = bfqg->bfqd; + + BUG_ON(!bfqd); + bfq_weights_tree_add(bfqd, entity, &bfqd->group_weights_tree); + } +#endif + + bfq_update_fin_time_enqueue(entity, st, backshifted); +} + +/** + * __bfq_requeue_entity - handle requeueing or repositioning of an entity. + * @entity: the entity being requeued or repositioned. + * + * Requeueing is needed if this entity stops being served, which + * happens if a leaf descendant entity has expired. On the other hand, + * repositioning is needed if the next_inservice_entity for the child + * entity has changed. See the comments inside the function for + * details. + * + * Basically, this function: 1) removes entity from its active tree if + * present there, 2) updates the timestamps of entity and 3) inserts + * entity back into its active tree (in the new, right position for + * the new values of the timestamps). + */ +static void __bfq_requeue_entity(struct bfq_entity *entity) +{ + struct bfq_sched_data *sd = entity->sched_data; + struct bfq_service_tree *st = bfq_entity_service_tree(entity); + + BUG_ON(!sd); + BUG_ON(!st); + + BUG_ON(entity != sd->in_service_entity && + entity->tree != &st->active); + + if (entity == sd->in_service_entity) { + /* + * We are requeueing the current in-service entity, + * which may have to be done for one of the following + * reasons: + * - entity represents the in-service queue, and the + * in-service queue is being requeued after an + * expiration; + * - entity represents a group, and its budget has + * changed because one of its child entities has + * just been either activated or requeued for some + * reason; the timestamps of the entity need then to + * be updated, and the entity needs to be enqueued + * or repositioned accordingly. + * + * In particular, before requeueing, the start time of + * the entity must be moved forward to account for the + * service that the entity has received while in + * service. This is done by the next instructions. The + * finish time will then be updated according to this + * new value of the start time, and to the budget of + * the entity. + */ + bfq_calc_finish(entity, entity->service); + entity->start = entity->finish; + BUG_ON(entity->tree && entity->tree == &st->idle); + BUG_ON(entity->tree && entity->tree != &st->active); + /* + * In addition, if the entity had more than one child + * when set in service, then it was not extracted from + * the active tree. This implies that the position of + * the entity in the active tree may need to be + * changed now, because we have just updated the start + * time of the entity, and we will update its finish + * time in a moment (the requeueing is then, more + * precisely, a repositioning in this case). To + * implement this repositioning, we: 1) dequeue the + * entity here, 2) update the finish time and requeue + * the entity according to the new timestamps below. + */ + if (entity->tree) + bfq_active_extract(st, entity); + } else { /* The entity is already active, and not in service */ + /* + * In this case, this function gets called only if the + * next_in_service entity below this entity has + * changed, and this change has caused the budget of + * this entity to change, which, finally implies that + * the finish time of this entity must be + * updated. Such an update may cause the scheduling, + * i.e., the position in the active tree, of this + * entity to change. We handle this change by: 1) + * dequeueing the entity here, 2) updating the finish + * time and requeueing the entity according to the new + * timestamps below. This is the same approach as the + * non-extracted-entity sub-case above. + */ + bfq_active_extract(st, entity); + } + + bfq_update_fin_time_enqueue(entity, st, false); +} + +static void __bfq_activate_requeue_entity(struct bfq_entity *entity, + struct bfq_sched_data *sd, + bool non_blocking_wait_rq) +{ + struct bfq_service_tree *st = bfq_entity_service_tree(entity); + + if (sd->in_service_entity == entity || entity->tree == &st->active) + /* + * in service or already queued on the active tree, + * requeue or reposition + */ + __bfq_requeue_entity(entity); + else + /* + * Not in service and not queued on its active tree: + * the activity is idle and this is a true activation. + */ + __bfq_activate_entity(entity, non_blocking_wait_rq); +} + + +/** + * bfq_activate_requeue_entity - activate or requeue an entity representing a bfq_queue, + * and activate, requeue or reposition all ancestors + * for which such an update becomes necessary. + * @entity: the entity to activate. + * @non_blocking_wait_rq: true if this entity was waiting for a request + * @requeue: true if this is a requeue, which implies that bfqq is + * being expired; thus ALL its ancestors stop being served and must + * therefore be requeued + * @expiration: true if this function is being invoked in the expiration path + * of the in-service queue + */ +static void bfq_activate_requeue_entity(struct bfq_entity *entity, + bool non_blocking_wait_rq, + bool requeue, bool expiration) +{ + struct bfq_sched_data *sd; + + for_each_entity(entity) { + BUG_ON(!entity); + sd = entity->sched_data; + __bfq_activate_requeue_entity(entity, sd, non_blocking_wait_rq); + + BUG_ON(RB_EMPTY_ROOT(&sd->service_tree->active) && + RB_EMPTY_ROOT(&(sd->service_tree+1)->active) && + RB_EMPTY_ROOT(&(sd->service_tree+2)->active)); + + if (!bfq_update_next_in_service(sd, entity, expiration) && + !requeue) { + BUG_ON(!sd->next_in_service); + break; + } + BUG_ON(!sd->next_in_service); + } +} + +/** + * __bfq_deactivate_entity - deactivate an entity from its service tree. + * @entity: the entity to deactivate. + * @ins_into_idle_tree: if false, the entity will not be put into the + * idle tree. + * + * Deactivates an entity, independently of its previous state. Must + * be invoked only if entity is on a service tree. Extracts the entity + * from that tree, and if necessary and allowed, puts it into the idle + * tree. + */ +static bool __bfq_deactivate_entity(struct bfq_entity *entity, + bool ins_into_idle_tree) +{ + struct bfq_sched_data *sd = entity->sched_data; + struct bfq_service_tree *st; + bool is_in_service; + + if (!entity->on_st) { /* entity never activated, or already inactive */ + BUG_ON(sd && entity == sd->in_service_entity); + return false; + } + + /* + * If we get here, then entity is active, which implies that + * bfq_group_set_parent has already been invoked for the group + * represented by entity. Therefore, the field + * entity->sched_data has been set, and we can safely use it. + */ + st = bfq_entity_service_tree(entity); + is_in_service = entity == sd->in_service_entity; + + BUG_ON(is_in_service && entity->tree && entity->tree != &st->active); + + bfq_calc_finish(entity, entity->service); + + if (is_in_service) { + sd->in_service_entity = NULL; + } else + /* + * Non in-service entity: nobody will take care of + * resetting its service counter on expiration. Do it + * now. + */ + entity->service = 0; + + if (entity->tree == &st->active) + bfq_active_extract(st, entity); + else if (!is_in_service && entity->tree == &st->idle) + bfq_idle_extract(st, entity); + else if (entity->tree) + BUG(); + + if (!ins_into_idle_tree || !bfq_gt(entity->finish, st->vtime)) + bfq_forget_entity(st, entity, is_in_service); + else + bfq_idle_insert(st, entity); + + return true; +} + +/** + * bfq_deactivate_entity - deactivate an entity representing a bfq_queue. + * @entity: the entity to deactivate. + * @ins_into_idle_tree: true if the entity can be put into the idle tree + * @expiration: true if this function is being invoked in the expiration path + * of the in-service queue + */ +static void bfq_deactivate_entity(struct bfq_entity *entity, + bool ins_into_idle_tree, + bool expiration) +{ + struct bfq_sched_data *sd; + struct bfq_entity *parent = NULL; + + for_each_entity_safe(entity, parent) { + sd = entity->sched_data; + + BUG_ON(sd == NULL); /* + * It would mean that this is the + * root group. + */ + + BUG_ON(expiration && entity != sd->in_service_entity); + + BUG_ON(entity != sd->in_service_entity && + entity->tree == + &bfq_entity_service_tree(entity)->active && + !sd->next_in_service); + + if (!__bfq_deactivate_entity(entity, ins_into_idle_tree)) { + /* + * entity is not in any tree any more, so + * this deactivation is a no-op, and there is + * nothing to change for upper-level entities + * (in case of expiration, this can never + * happen). + */ + BUG_ON(expiration); /* + * entity cannot be already out of + * any tree + */ + return; + } + + if (sd->next_in_service == entity) + /* + * entity was the next_in_service entity, + * then, since entity has just been + * deactivated, a new one must be found. + */ + bfq_update_next_in_service(sd, NULL, expiration); + + if (sd->next_in_service || sd->in_service_entity) { + /* + * The parent entity is still active, because + * either next_in_service or in_service_entity + * is not NULL. So, no further upwards + * deactivation must be performed. Yet, + * next_in_service has changed. Then the + * schedule does need to be updated upwards. + * + * NOTE If in_service_entity is not NULL, then + * next_in_service may happen to be NULL, + * although the parent entity is evidently + * active. This happens if 1) the entity + * pointed by in_service_entity is the only + * active entity in the parent entity, and 2) + * according to the definition of + * next_in_service, the in_service_entity + * cannot be considered as + * next_in_service. See the comments on the + * definition of next_in_service for details. + */ + BUG_ON(sd->next_in_service == entity); + BUG_ON(sd->in_service_entity == entity); + break; + } + + /* + * If we get here, then the parent is no more + * backlogged and we need to propagate the + * deactivation upwards. Thus let the loop go on. + */ + + /* + * Also let parent be queued into the idle tree on + * deactivation, to preserve service guarantees, and + * assuming that who invoked this function does not + * need parent entities too to be removed completely. + */ + ins_into_idle_tree = true; + } + + /* + * If the deactivation loop is fully executed, then there are + * no more entities to touch and next loop is not executed at + * all. Otherwise, requeue remaining entities if they are + * about to stop receiving service, or reposition them if this + * is not the case. + */ + entity = parent; + for_each_entity(entity) { + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + + /* + * Invoke __bfq_requeue_entity on entity, even if + * already active, to requeue/reposition it in the + * active tree (because sd->next_in_service has + * changed) + */ + __bfq_requeue_entity(entity); + + sd = entity->sched_data; + BUG_ON(expiration && sd->in_service_entity != entity); + + if (bfqq) + bfq_log_bfqq(bfqq->bfqd, bfqq, + "invoking udpdate_next for this queue"); +#ifdef BFQ_GROUP_IOSCHED_ENABLED + else { + struct bfq_group *bfqg = + container_of(entity, + struct bfq_group, entity); + + bfq_log_bfqg((struct bfq_data *)bfqg->bfqd, bfqg, + "invoking udpdate_next for this entity"); + } +#endif + if (!bfq_update_next_in_service(sd, entity, expiration) && + !expiration) + /* + * next_in_service unchanged or not causing + * any change in entity->parent->sd, and no + * requeueing needed for expiration: stop + * here. + */ + break; + } +} + +/** + * bfq_calc_vtime_jump - compute the value to which the vtime should jump, + * if needed, to have at least one entity eligible. + * @st: the service tree to act upon. + * + * Assumes that st is not empty. + */ +static u64 bfq_calc_vtime_jump(struct bfq_service_tree *st) +{ + struct bfq_entity *root_entity = bfq_root_active_entity(&st->active); + + if (bfq_gt(root_entity->min_start, st->vtime)) { + struct bfq_queue *bfqq = bfq_entity_to_bfqq(root_entity); + + if (bfqq) + bfq_log_bfqq(bfqq->bfqd, bfqq, + "new value %llu", + ((root_entity->min_start>>10)*1000)>>12); +#ifdef BFQ_GROUP_IOSCHED_ENABLED + else { + struct bfq_group *bfqg = + container_of(root_entity, struct bfq_group, + entity); + + bfq_log_bfqg((struct bfq_data *)bfqg->bfqd, bfqg, + "new value %llu", + ((root_entity->min_start>>10)*1000)>>12); + } +#endif + return root_entity->min_start; + } + return st->vtime; +} + +static void bfq_update_vtime(struct bfq_service_tree *st, u64 new_value) +{ + if (new_value > st->vtime) { + st->vtime = new_value; + bfq_forget_idle(st); + } +} + +/** + * bfq_first_active_entity - find the eligible entity with + * the smallest finish time + * @st: the service tree to select from. + * @vtime: the system virtual to use as a reference for eligibility + * + * This function searches the first schedulable entity, starting from the + * root of the tree and going on the left every time on this side there is + * a subtree with at least one eligible (start >= vtime) entity. The path on + * the right is followed only if a) the left subtree contains no eligible + * entities and b) no eligible entity has been found yet. + */ +static struct bfq_entity *bfq_first_active_entity(struct bfq_service_tree *st, + u64 vtime) +{ + struct bfq_entity *entry, *first = NULL; + struct rb_node *node = st->active.rb_node; + + while (node) { + entry = rb_entry(node, struct bfq_entity, rb_node); +left: + if (!bfq_gt(entry->start, vtime)) + first = entry; + + BUG_ON(bfq_gt(entry->min_start, vtime)); + + if (node->rb_left) { + entry = rb_entry(node->rb_left, + struct bfq_entity, rb_node); + if (!bfq_gt(entry->min_start, vtime)) { + node = node->rb_left; + goto left; + } + } + if (first) + break; + node = node->rb_right; + } + + BUG_ON(!first && !RB_EMPTY_ROOT(&st->active)); + return first; +} + +/** + * __bfq_lookup_next_entity - return the first eligible entity in @st. + * @st: the service tree. + * + * If there is no in-service entity for the sched_data st belongs to, + * then return the entity that will be set in service if: + * 1) the parent entity this st belongs to is set in service; + * 2) no entity belonging to such parent entity undergoes a state change + * that would influence the timestamps of the entity (e.g., becomes idle, + * becomes backlogged, changes its budget, ...). + * + * In this first case, update the virtual time in @st too (see the + * comments on this update inside the function). + * + * In constrast, if there is an in-service entity, then return the + * entity that would be set in service if not only the above + * conditions, but also the next one held true: the currently + * in-service entity, on expiration, + * 1) gets a finish time equal to the current one, or + * 2) is not eligible any more, or + * 3) is idle. + */ +static struct bfq_entity * +__bfq_lookup_next_entity(struct bfq_service_tree *st, bool in_service) +{ + struct bfq_entity *entity; + u64 new_vtime; + struct bfq_queue *bfqq; + + if (RB_EMPTY_ROOT(&st->active)) + return NULL; + + /* + * Get the value of the system virtual time for which at + * least one entity is eligible. + */ + new_vtime = bfq_calc_vtime_jump(st); + + /* + * If there is no in-service entity for the sched_data this + * active tree belongs to, then push the system virtual time + * up to the value that guarantees that at least one entity is + * eligible. If, instead, there is an in-service entity, then + * do not make any such update, because there is already an + * eligible entity, namely the in-service one (even if the + * entity is not on st, because it was extracted when set in + * service). + */ + if (!in_service) + bfq_update_vtime(st, new_vtime); + + entity = bfq_first_active_entity(st, new_vtime); + BUG_ON(bfq_gt(entity->start, new_vtime)); + + /* Log some information */ + bfqq = bfq_entity_to_bfqq(entity); + if (bfqq) + bfq_log_bfqq(bfqq->bfqd, bfqq, + "start %llu vtime %llu st %p", + ((entity->start>>10)*1000)>>12, + ((new_vtime>>10)*1000)>>12, st); +#ifdef BFQ_GROUP_IOSCHED_ENABLED + else { + struct bfq_group *bfqg = + container_of(entity, struct bfq_group, entity); + + bfq_log_bfqg((struct bfq_data *)bfqg->bfqd, bfqg, + "start %llu vtime %llu (%llu) st %p", + ((entity->start>>10)*1000)>>12, + ((st->vtime>>10)*1000)>>12, + ((new_vtime>>10)*1000)>>12, st); + } +#endif + + BUG_ON(!entity); + + return entity; +} + +/** + * bfq_lookup_next_entity - return the first eligible entity in @sd. + * @sd: the sched_data. + * @expiration: true if we are on the expiration path of the in-service queue + * + * This function is invoked when there has been a change in the trees + * for sd, and we need to know what is the new next entity to serve + * after this change. + */ +static struct bfq_entity *bfq_lookup_next_entity(struct bfq_sched_data *sd, + bool expiration) +{ + struct bfq_service_tree *st = sd->service_tree; + struct bfq_service_tree *idle_class_st = st + (BFQ_IOPRIO_CLASSES - 1); + struct bfq_entity *entity = NULL; + struct bfq_queue *bfqq; + int class_idx = 0; + + BUG_ON(!sd); + BUG_ON(!st); + /* + * Choose from idle class, if needed to guarantee a minimum + * bandwidth to this class (and if there is some active entity + * in idle class). This should also mitigate + * priority-inversion problems in case a low priority task is + * holding file system resources. + */ + if (time_is_before_jiffies(sd->bfq_class_idle_last_service + + BFQ_CL_IDLE_TIMEOUT)) { + if (!RB_EMPTY_ROOT(&idle_class_st->active)) + class_idx = BFQ_IOPRIO_CLASSES - 1; + /* About to be served if backlogged, or not yet backlogged */ + sd->bfq_class_idle_last_service = jiffies; + } + + /* + * Find the next entity to serve for the highest-priority + * class, unless the idle class needs to be served. + */ + for (; class_idx < BFQ_IOPRIO_CLASSES; class_idx++) { + /* + * If expiration is true, then bfq_lookup_next_entity + * is being invoked as a part of the expiration path + * of the in-service queue. In this case, even if + * sd->in_service_entity is not NULL, + * sd->in_service_entiy at this point is actually not + * in service any more, and, if needed, has already + * been properly queued or requeued into the right + * tree. The reason why sd->in_service_entity is still + * not NULL here, even if expiration is true, is that + * sd->in_service_entiy is reset as a last step in the + * expiration path. So, if expiration is true, tell + * __bfq_lookup_next_entity that there is no + * sd->in_service_entity. + */ + entity = __bfq_lookup_next_entity(st + class_idx, + sd->in_service_entity && + !expiration); + + if (entity) + break; + } + + BUG_ON(!entity && + (!RB_EMPTY_ROOT(&st->active) || !RB_EMPTY_ROOT(&(st+1)->active) || + !RB_EMPTY_ROOT(&(st+2)->active))); + + if (!entity) + return NULL; + + /* Log some information */ + bfqq = bfq_entity_to_bfqq(entity); + if (bfqq) + bfq_log_bfqq(bfqq->bfqd, bfqq, "chosen from st %p %d", + st + class_idx, class_idx); +#ifdef BFQ_GROUP_IOSCHED_ENABLED + else { + struct bfq_group *bfqg = + container_of(entity, struct bfq_group, entity); + + bfq_log_bfqg((struct bfq_data *)bfqg->bfqd, bfqg, + "chosen from st %p %d", + st + class_idx, class_idx); + } +#endif + + return entity; +} + +static bool next_queue_may_preempt(struct bfq_data *bfqd) +{ + struct bfq_sched_data *sd = &bfqd->root_group->sched_data; + + return sd->next_in_service != sd->in_service_entity; +} + +/* + * Get next queue for service. + */ +static struct bfq_queue *bfq_get_next_queue(struct bfq_data *bfqd) +{ + struct bfq_entity *entity = NULL; + struct bfq_sched_data *sd; + struct bfq_queue *bfqq; + + BUG_ON(bfqd->in_service_queue); + + if (bfqd->busy_queues == 0) + return NULL; + + /* + * Traverse the path from the root to the leaf entity to + * serve. Set in service all the entities visited along the + * way. + */ + sd = &bfqd->root_group->sched_data; + for (; sd ; sd = entity->my_sched_data) { +#ifdef BFQ_GROUP_IOSCHED_ENABLED + if (entity) { + struct bfq_group *bfqg = + container_of(entity, struct bfq_group, entity); + + bfq_log_bfqg(bfqd, bfqg, + "lookup in this group"); + if (!sd->next_in_service) + pr_crit("lookup in this group"); + } else { + bfq_log_bfqg(bfqd, bfqd->root_group, + "lookup in root group"); + if (!sd->next_in_service) + pr_crit("lookup in root group"); + } +#endif + + BUG_ON(!sd->next_in_service); + + /* + * WARNING. We are about to set the in-service entity + * to sd->next_in_service, i.e., to the (cached) value + * returned by bfq_lookup_next_entity(sd) the last + * time it was invoked, i.e., the last time when the + * service order in sd changed as a consequence of the + * activation or deactivation of an entity. In this + * respect, if we execute bfq_lookup_next_entity(sd) + * in this very moment, it may, although with low + * probability, yield a different entity than that + * pointed to by sd->next_in_service. This rare event + * happens in case there was no CLASS_IDLE entity to + * serve for sd when bfq_lookup_next_entity(sd) was + * invoked for the last time, while there is now one + * such entity. + * + * If the above event happens, then the scheduling of + * such entity in CLASS_IDLE is postponed until the + * service of the sd->next_in_service entity + * finishes. In fact, when the latter is expired, + * bfq_lookup_next_entity(sd) gets called again, + * exactly to update sd->next_in_service. + */ + + /* Make next_in_service entity become in_service_entity */ + entity = sd->next_in_service; + sd->in_service_entity = entity; + + /* + * If entity is no longer a candidate for next + * service, then it must be extracted from its active + * tree, so as to make sure that it won't be + * considered when computing next_in_service. See the + * comments on the function + * bfq_no_longer_next_in_service() for details. + */ + if (bfq_no_longer_next_in_service(entity)) + bfq_active_extract(bfq_entity_service_tree(entity), + entity); + + /* + * Even if entity is not to be extracted according to + * the above check, a descendant entity may get + * extracted in one of the next iterations of this + * loop. Such an event could cause a change in + * next_in_service for the level of the descendant + * entity, and thus possibly back to this level. + * + * However, we cannot perform the resulting needed + * update of next_in_service for this level before the + * end of the whole loop, because, to know which is + * the correct next-to-serve candidate entity for each + * level, we need first to find the leaf entity to set + * in service. In fact, only after we know which is + * the next-to-serve leaf entity, we can discover + * whether the parent entity of the leaf entity + * becomes the next-to-serve, and so on. + */ + + /* Log some information */ + bfqq = bfq_entity_to_bfqq(entity); + if (bfqq) + bfq_log_bfqq(bfqd, bfqq, + "this queue, finish %llu", + (((entity->finish>>10)*1000)>>10)>>2); +#ifdef BFQ_GROUP_IOSCHED_ENABLED + else { + struct bfq_group *bfqg = + container_of(entity, struct bfq_group, entity); + + bfq_log_bfqg(bfqd, bfqg, + "this entity, finish %llu", + (((entity->finish>>10)*1000)>>10)>>2); + } +#endif + + } + + BUG_ON(!entity); + bfqq = bfq_entity_to_bfqq(entity); + BUG_ON(!bfqq); + + /* + * We can finally update all next-to-serve entities along the + * path from the leaf entity just set in service to the root. + */ + for_each_entity(entity) { + struct bfq_sched_data *sd = entity->sched_data; + + if (!bfq_update_next_in_service(sd, NULL, false)) + break; + } + + return bfqq; +} + +static void __bfq_bfqd_reset_in_service(struct bfq_data *bfqd) +{ + struct bfq_queue *in_serv_bfqq = bfqd->in_service_queue; + struct bfq_entity *in_serv_entity = &in_serv_bfqq->entity; + struct bfq_entity *entity = in_serv_entity; + +#ifndef BFQ_MQ + if (bfqd->in_service_bic) { + put_io_context(bfqd->in_service_bic->icq.ioc); + bfqd->in_service_bic = NULL; + } +#endif + + bfq_clear_bfqq_wait_request(in_serv_bfqq); + hrtimer_try_to_cancel(&bfqd->idle_slice_timer); + bfqd->in_service_queue = NULL; + + /* + * When this function is called, all in-service entities have + * been properly deactivated or requeued, so we can safely + * execute the final step: reset in_service_entity along the + * path from entity to the root. + */ + for_each_entity(entity) + entity->sched_data->in_service_entity = NULL; + + /* + * in_serv_entity is no longer in service, so, if it is in no + * service tree either, then release the service reference to + * the queue it represents (taken with bfq_get_entity). + */ + if (!in_serv_entity->on_st) + bfq_put_queue(in_serv_bfqq); +} + +static void bfq_deactivate_bfqq(struct bfq_data *bfqd, struct bfq_queue *bfqq, + bool ins_into_idle_tree, bool expiration) +{ + struct bfq_entity *entity = &bfqq->entity; + + bfq_deactivate_entity(entity, ins_into_idle_tree, expiration); +} + +static void bfq_activate_bfqq(struct bfq_data *bfqd, struct bfq_queue *bfqq) +{ + struct bfq_entity *entity = &bfqq->entity; + struct bfq_service_tree *st = bfq_entity_service_tree(entity); + + BUG_ON(bfqq == bfqd->in_service_queue); + BUG_ON(entity->tree != &st->active && entity->tree != &st->idle && + entity->on_st); + + bfq_activate_requeue_entity(entity, bfq_bfqq_non_blocking_wait_rq(bfqq), + false, false); + bfq_clear_bfqq_non_blocking_wait_rq(bfqq); +} + +static void bfq_requeue_bfqq(struct bfq_data *bfqd, struct bfq_queue *bfqq, + bool expiration) +{ + struct bfq_entity *entity = &bfqq->entity; + + bfq_activate_requeue_entity(entity, false, + bfqq == bfqd->in_service_queue, expiration); +} + +static void bfqg_stats_update_dequeue(struct bfq_group *bfqg); + +/* + * Called when the bfqq no longer has requests pending, remove it from + * the service tree. As a special case, it can be invoked during an + * expiration. + */ +static void bfq_del_bfqq_busy(struct bfq_data *bfqd, struct bfq_queue *bfqq, + bool expiration) +{ + BUG_ON(!bfq_bfqq_busy(bfqq)); + BUG_ON(!RB_EMPTY_ROOT(&bfqq->sort_list)); + + bfq_log_bfqq(bfqd, bfqq, "del from busy"); + + bfq_clear_bfqq_busy(bfqq); + + BUG_ON(bfqd->busy_queues == 0); + bfqd->busy_queues--; + + if (!bfqq->dispatched) + bfq_weights_tree_remove(bfqd, bfqq); + + if (bfqq->wr_coeff > 1) { + bfqd->wr_busy_queues--; + BUG_ON(bfqd->wr_busy_queues < 0); + } + + bfqg_stats_update_dequeue(bfqq_group(bfqq)); + + BUG_ON(bfqq->entity.budget < 0); + + bfq_deactivate_bfqq(bfqd, bfqq, true, expiration); +} + +/* + * Called when an inactive queue receives a new request. + */ +static void bfq_add_bfqq_busy(struct bfq_data *bfqd, struct bfq_queue *bfqq) +{ + BUG_ON(bfq_bfqq_busy(bfqq)); + BUG_ON(bfqq == bfqd->in_service_queue); + + bfq_log_bfqq(bfqd, bfqq, "add to busy"); + + bfq_activate_bfqq(bfqd, bfqq); + + bfq_mark_bfqq_busy(bfqq); + bfqd->busy_queues++; + + if (!bfqq->dispatched) + if (bfqq->wr_coeff == 1) + bfq_weights_tree_add(bfqd, &bfqq->entity, + &bfqd->queue_weights_tree); + + if (bfqq->wr_coeff > 1) { + bfqd->wr_busy_queues++; + BUG_ON(bfqd->wr_busy_queues > bfqd->busy_queues); + } + +} diff --git a/block/bfq-sq-iosched.c b/block/bfq-sq-iosched.c new file mode 100644 index 00000000000..660ab522aef --- /dev/null +++ b/block/bfq-sq-iosched.c @@ -0,0 +1,5841 @@ +/* + * Budget Fair Queueing (BFQ) I/O scheduler. + * + * Based on ideas and code from CFQ: + * Copyright (C) 2003 Jens Axboe + * + * Copyright (C) 2008 Fabio Checconi + * Paolo Valente + * + * Copyright (C) 2015 Paolo Valente + * + * Copyright (C) 2017 Paolo Valente + * + * Licensed under the GPL-2 as detailed in the accompanying COPYING.BFQ + * file. + * + * BFQ is a proportional-share I/O scheduler, with some extra + * low-latency capabilities. BFQ also supports full hierarchical + * scheduling through cgroups. Next paragraphs provide an introduction + * on BFQ inner workings. Details on BFQ benefits and usage can be + * found in Documentation/block/bfq-iosched.txt. + * + * BFQ is a proportional-share storage-I/O scheduling algorithm based + * on the slice-by-slice service scheme of CFQ. But BFQ assigns + * budgets, measured in number of sectors, to processes instead of + * time slices. The device is not granted to the in-service process + * for a given time slice, but until it has exhausted its assigned + * budget. This change from the time to the service domain enables BFQ + * to distribute the device throughput among processes as desired, + * without any distortion due to throughput fluctuations, or to device + * internal queueing. BFQ uses an ad hoc internal scheduler, called + * B-WF2Q+, to schedule processes according to their budgets. More + * precisely, BFQ schedules queues associated with processes. Thanks to + * the accurate policy of B-WF2Q+, BFQ can afford to assign high + * budgets to I/O-bound processes issuing sequential requests (to + * boost the throughput), and yet guarantee a low latency to + * interactive and soft real-time applications. + * + * In particular, BFQ schedules I/O so as to achieve the latter goal-- + * low latency for interactive and soft real-time applications--if the + * low_latency parameter is set (default configuration). To this + * purpose, BFQ constantly tries to detect whether the I/O requests in + * a bfq_queue come from an interactive or a soft real-time + * application. For brevity, in these cases, the queue is said to be + * interactive or soft real-time. In both cases, BFQ privileges the + * service of the queue, over that of non-interactive and + * non-soft-real-time queues. This privileging is performed, mainly, + * by raising the weight of the queue. So, for brevity, we call just + * weight-raising periods the time periods during which a queue is + * privileged, because deemed interactive or soft real-time. + * + * The detection of soft real-time queues/applications is described in + * detail in the comments on the function + * bfq_bfqq_softrt_next_start. On the other hand, the detection of an + * interactive queue works as follows: a queue is deemed interactive + * if it is constantly non empty only for a limited time interval, + * after which it does become empty. The queue may be deemed + * interactive again (for a limited time), if it restarts being + * constantly non empty, provided that this happens only after the + * queue has remained empty for a given minimum idle time. + * + * By default, BFQ computes automatically the above maximum time + * interval, i.e., the time interval after which a constantly + * non-empty queue stops being deemed interactive. Since a queue is + * weight-raised while it is deemed interactive, this maximum time + * interval happens to coincide with the (maximum) duration of the + * weight-raising for interactive queues. + * + * NOTE: if the main or only goal, with a given device, is to achieve + * the maximum-possible throughput at all times, then do switch off + * all low-latency heuristics for that device, by setting low_latency + * to 0. + * + * BFQ is described in [1], where also a reference to the initial, + * more theoretical paper on BFQ can be found. The interested reader + * can find in the latter paper full details on the main algorithm, as + * well as formulas of the guarantees and formal proofs of all the + * properties. With respect to the version of BFQ presented in these + * papers, this implementation adds a few more heuristics, such as the + * one that guarantees a low latency to soft real-time applications, + * and a hierarchical extension based on H-WF2Q+. + * + * B-WF2Q+ is based on WF2Q+, that is described in [2], together with + * H-WF2Q+, while the augmented tree used to implement B-WF2Q+ with O(log N) + * complexity derives from the one introduced with EEVDF in [3]. + * + * [1] P. Valente, A. Avanzini, "Evolution of the BFQ Storage I/O + * Scheduler", Proceedings of the First Workshop on Mobile System + * Technologies (MST-2015), May 2015. + * http://algogroup.unimore.it/people/paolo/disk_sched/mst-2015.pdf + * + * http://algogroup.unimo.it/people/paolo/disk_sched/bf1-v1-suite-results.pdf + * + * [2] Jon C.R. Bennett and H. Zhang, ``Hierarchical Packet Fair Queueing + * Algorithms,'' IEEE/ACM Transactions on Networking, 5(5):675-689, + * Oct 1997. + * + * http://www.cs.cmu.edu/~hzhang/papers/TON-97-Oct.ps.gz + * + * [3] I. Stoica and H. Abdel-Wahab, ``Earliest Eligible Virtual Deadline + * First: A Flexible and Accurate Mechanism for Proportional Share + * Resource Allocation,'' technical report. + * + * http://www.cs.berkeley.edu/~istoica/papers/eevdf-tr-95.pdf + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include "blk.h" +#include "bfq.h" +#include "blk-wbt.h" + +/* Expiration time of sync (0) and async (1) requests, in ns. */ +static const u64 bfq_fifo_expire[2] = { NSEC_PER_SEC / 4, NSEC_PER_SEC / 8 }; + +/* Maximum backwards seek, in KiB. */ +static const int bfq_back_max = (16 * 1024); + +/* Penalty of a backwards seek, in number of sectors. */ +static const int bfq_back_penalty = 2; + +/* Idling period duration, in ns. */ +static u32 bfq_slice_idle = (NSEC_PER_SEC / 125); + +/* Minimum number of assigned budgets for which stats are safe to compute. */ +static const int bfq_stats_min_budgets = 194; + +/* Default maximum budget values, in sectors and number of requests. */ +static const int bfq_default_max_budget = (16 * 1024); + +/* + * When a sync request is dispatched, the queue that contains that + * request, and all the ancestor entities of that queue, are charged + * with the number of sectors of the request. In constrast, if the + * request is async, then the queue and its ancestor entities are + * charged with the number of sectors of the request, multiplied by + * the factor below. This throttles the bandwidth for async I/O, + * w.r.t. to sync I/O, and it is done to counter the tendency of async + * writes to steal I/O throughput to reads. + * + * The current value of this parameter is the result of a tuning with + * several hardware and software configurations. We tried to find the + * lowest value for which writes do not cause noticeable problems to + * reads. In fact, the lower this parameter, the stabler I/O control, + * in the following respect. The lower this parameter is, the less + * the bandwidth enjoyed by a group decreases + * - when the group does writes, w.r.t. to when it does reads; + * - when other groups do reads, w.r.t. to when they do writes. + */ +static const int bfq_async_charge_factor = 3; + +/* Default timeout values, in jiffies, approximating CFQ defaults. */ +static const int bfq_timeout = (HZ / 8); + +/* + * Time limit for merging (see comments in bfq_setup_cooperator). Set + * to the slowest value that, in our tests, proved to be effective in + * removing false positives, while not causing true positives to miss + * queue merging. + * + * As can be deduced from the low time limit below, queue merging, if + * successful, happens at the very beggining of the I/O of the involved + * cooperating processes, as a consequence of the arrival of the very + * first requests from each cooperator. After that, there is very + * little chance to find cooperators. + */ +static const unsigned long bfq_merge_time_limit = HZ/10; + +#define MAX_LENGTH_REASON_NAME 25 + +static const char reason_name[][MAX_LENGTH_REASON_NAME] = {"TOO_IDLE", +"BUDGET_TIMEOUT", "BUDGET_EXHAUSTED", "NO_MORE_REQUESTS", +"PREEMPTED"}; + +static struct kmem_cache *bfq_pool; + +/* Below this threshold (in ns), we consider thinktime immediate. */ +#define BFQ_MIN_TT (2 * NSEC_PER_MSEC) + +/* hw_tag detection: parallel requests threshold and min samples needed. */ +#define BFQ_HW_QUEUE_THRESHOLD 4 +#define BFQ_HW_QUEUE_SAMPLES 32 + +#define BFQQ_SEEK_THR (sector_t)(8 * 100) +#define BFQQ_SECT_THR_NONROT (sector_t)(2 * 32) +#define BFQQ_CLOSE_THR (sector_t)(8 * 1024) +#define BFQQ_SEEKY(bfqq) (hweight32(bfqq->seek_history) > 19) + +/* Min number of samples required to perform peak-rate update */ +#define BFQ_RATE_MIN_SAMPLES 32 +/* Min observation time interval required to perform a peak-rate update (ns) */ +#define BFQ_RATE_MIN_INTERVAL (300*NSEC_PER_MSEC) +/* Target observation time interval for a peak-rate update (ns) */ +#define BFQ_RATE_REF_INTERVAL NSEC_PER_SEC + +/* + * Shift used for peak-rate fixed precision calculations. + * With + * - the current shift: 16 positions + * - the current type used to store rate: u32 + * - the current unit of measure for rate: [sectors/usec], or, more precisely, + * [(sectors/usec) / 2^BFQ_RATE_SHIFT] to take into account the shift, + * the range of rates that can be stored is + * [1 / 2^BFQ_RATE_SHIFT, 2^(32 - BFQ_RATE_SHIFT)] sectors/usec = + * [1 / 2^16, 2^16] sectors/usec = [15e-6, 65536] sectors/usec = + * [15, 65G] sectors/sec + * Which, assuming a sector size of 512B, corresponds to a range of + * [7.5K, 33T] B/sec + */ +#define BFQ_RATE_SHIFT 16 + +/* + * When configured for computing the duration of the weight-raising + * for interactive queues automatically (see the comments at the + * beginning of this file), BFQ does it using the following formula: + * duration = (ref_rate / r) * ref_wr_duration, + * where r is the peak rate of the device, and ref_rate and + * ref_wr_duration are two reference parameters. In particular, + * ref_rate is the peak rate of the reference storage device (see + * below), and ref_wr_duration is about the maximum time needed, with + * BFQ and while reading two files in parallel, to load typical large + * applications on the reference device (see the comments on + * max_service_from_wr below, for more details on how ref_wr_duration + * is obtained). In practice, the slower/faster the device at hand + * is, the more/less it takes to load applications with respect to the + * reference device. Accordingly, the longer/shorter BFQ grants + * weight raising to interactive applications. + * + * BFQ uses two different reference pairs (ref_rate, ref_wr_duration), + * depending on whether the device is rotational or non-rotational. + * + * In the following definitions, ref_rate[0] and ref_wr_duration[0] + * are the reference values for a rotational device, whereas + * ref_rate[1] and ref_wr_duration[1] are the reference values for a + * non-rotational device. The reference rates are not the actual peak + * rates of the devices used as a reference, but slightly lower + * values. The reason for using slightly lower values is that the + * peak-rate estimator tends to yield slightly lower values than the + * actual peak rate (it can yield the actual peak rate only if there + * is only one process doing I/O, and the process does sequential + * I/O). + * + * The reference peak rates are measured in sectors/usec, left-shifted + * by BFQ_RATE_SHIFT. + */ +static int ref_rate[2] = {14000, 33000}; +/* + * To improve readability, a conversion function is used to initialize + * the following array, which entails that the array can be + * initialized only in a function. + */ +static int ref_wr_duration[2]; + +/* + * BFQ uses the above-detailed, time-based weight-raising mechanism to + * privilege interactive tasks. This mechanism is vulnerable to the + * following false positives: I/O-bound applications that will go on + * doing I/O for much longer than the duration of weight + * raising. These applications have basically no benefit from being + * weight-raised at the beginning of their I/O. On the opposite end, + * while being weight-raised, these applications + * a) unjustly steal throughput to applications that may actually need + * low latency; + * b) make BFQ uselessly perform device idling; device idling results + * in loss of device throughput with most flash-based storage, and may + * increase latencies when used purposelessly. + * + * BFQ tries to reduce these problems, by adopting the following + * countermeasure. To introduce this countermeasure, we need first to + * finish explaining how the duration of weight-raising for + * interactive tasks is computed. + * + * For a bfq_queue deemed as interactive, the duration of weight + * raising is dynamically adjusted, as a function of the estimated + * peak rate of the device, so as to be equal to the time needed to + * execute the 'largest' interactive task we benchmarked so far. By + * largest task, we mean the task for which each involved process has + * to do more I/O than for any of the other tasks we benchmarked. This + * reference interactive task is the start-up of LibreOffice Writer, + * and in this task each process/bfq_queue needs to have at most ~110K + * sectors transfered. + * + * This last piece of information enables BFQ to reduce the actual + * duration of weight-raising for at least one class of I/O-bound + * applications: those doing sequential or quasi-sequential I/O. An + * example is file copy. In fact, once started, the main I/O-bound + * processes of these applications usually consume the above 110K + * sectors in much less time than the processes of an application that + * is starting, because these I/O-bound processes will greedily devote + * almost all their CPU cycles only to their target, + * throughput-friendly I/O operations. This is even more true if BFQ + * happens to be underestimating the device peak rate, and thus + * overestimating the duration of weight raising. But, according to + * our measurements, once transferred 110K sectors, these processes + * have no right to be weight-raised any longer. + * + * Basing on the last consideration, BFQ ends weight-raising for a + * bfq_queue if the latter happens to have received an amount of + * service at least equal to the following constant. The constant is + * set to slightly more than 110K, to have a minimum safety margin. + * + * This early ending of weight-raising reduces the amount of time + * during which interactive false positives cause the two problems + * described at the beginning of these comments. + */ +static const unsigned long max_service_from_wr = 120000; + +#define BFQ_SERVICE_TREE_INIT ((struct bfq_service_tree) \ + { RB_ROOT, RB_ROOT, NULL, NULL, 0, 0 }) + +#define RQ_BIC(rq) icq_to_bic((rq)->elv.priv[0]) +#define RQ_BFQQ(rq) ((rq)->elv.priv[1]) + +static void bfq_schedule_dispatch(struct bfq_data *bfqd); + +#include "bfq-ioc.c" +#include "bfq-sched.c" +#include "bfq-cgroup-included.c" + +#define bfq_class_idle(bfqq) ((bfqq)->ioprio_class == IOPRIO_CLASS_IDLE) +#define bfq_class_rt(bfqq) ((bfqq)->ioprio_class == IOPRIO_CLASS_RT) + +#define bfq_sample_valid(samples) ((samples) > 80) + +/* + * Scheduler run of queue, if there are requests pending and no one in the + * driver that will restart queueing. + */ +static void bfq_schedule_dispatch(struct bfq_data *bfqd) +{ + if (bfqd->queued != 0) { + bfq_log(bfqd, ""); + kblockd_schedule_work(&bfqd->unplug_work); + } +} + +/* + * Lifted from AS - choose which of rq1 and rq2 that is best served now. + * We choose the request that is closesr to the head right now. Distance + * behind the head is penalized and only allowed to a certain extent. + */ +static struct request *bfq_choose_req(struct bfq_data *bfqd, + struct request *rq1, + struct request *rq2, + sector_t last) +{ + sector_t s1, s2, d1 = 0, d2 = 0; + unsigned long back_max; +#define BFQ_RQ1_WRAP 0x01 /* request 1 wraps */ +#define BFQ_RQ2_WRAP 0x02 /* request 2 wraps */ + unsigned int wrap = 0; /* bit mask: requests behind the disk head? */ + + if (!rq1 || rq1 == rq2) + return rq2; + if (!rq2) + return rq1; + + if (rq_is_sync(rq1) && !rq_is_sync(rq2)) + return rq1; + else if (rq_is_sync(rq2) && !rq_is_sync(rq1)) + return rq2; + if ((rq1->cmd_flags & REQ_META) && !(rq2->cmd_flags & REQ_META)) + return rq1; + else if ((rq2->cmd_flags & REQ_META) && !(rq1->cmd_flags & REQ_META)) + return rq2; + + s1 = blk_rq_pos(rq1); + s2 = blk_rq_pos(rq2); + + /* + * By definition, 1KiB is 2 sectors. + */ + back_max = bfqd->bfq_back_max * 2; + + /* + * Strict one way elevator _except_ in the case where we allow + * short backward seeks which are biased as twice the cost of a + * similar forward seek. + */ + if (s1 >= last) + d1 = s1 - last; + else if (s1 + back_max >= last) + d1 = (last - s1) * bfqd->bfq_back_penalty; + else + wrap |= BFQ_RQ1_WRAP; + + if (s2 >= last) + d2 = s2 - last; + else if (s2 + back_max >= last) + d2 = (last - s2) * bfqd->bfq_back_penalty; + else + wrap |= BFQ_RQ2_WRAP; + + /* Found required data */ + + /* + * By doing switch() on the bit mask "wrap" we avoid having to + * check two variables for all permutations: --> faster! + */ + switch (wrap) { + case 0: /* common case for CFQ: rq1 and rq2 not wrapped */ + if (d1 < d2) + return rq1; + else if (d2 < d1) + return rq2; + + if (s1 >= s2) + return rq1; + else + return rq2; + + case BFQ_RQ2_WRAP: + return rq1; + case BFQ_RQ1_WRAP: + return rq2; + case (BFQ_RQ1_WRAP|BFQ_RQ2_WRAP): /* both rqs wrapped */ + default: + /* + * Since both rqs are wrapped, + * start with the one that's further behind head + * (--> only *one* back seek required), + * since back seek takes more time than forward. + */ + if (s1 <= s2) + return rq1; + else + return rq2; + } +} + +static struct bfq_queue * +bfq_rq_pos_tree_lookup(struct bfq_data *bfqd, struct rb_root *root, + sector_t sector, struct rb_node **ret_parent, + struct rb_node ***rb_link) +{ + struct rb_node **p, *parent; + struct bfq_queue *bfqq = NULL; + + parent = NULL; + p = &root->rb_node; + while (*p) { + struct rb_node **n; + + parent = *p; + bfqq = rb_entry(parent, struct bfq_queue, pos_node); + + /* + * Sort strictly based on sector. Smallest to the left, + * largest to the right. + */ + if (sector > blk_rq_pos(bfqq->next_rq)) + n = &(*p)->rb_right; + else if (sector < blk_rq_pos(bfqq->next_rq)) + n = &(*p)->rb_left; + else + break; + p = n; + bfqq = NULL; + } + + *ret_parent = parent; + if (rb_link) + *rb_link = p; + + bfq_log(bfqd, "%llu: returning %d", + (unsigned long long) sector, + bfqq ? bfqq->pid : 0); + + return bfqq; +} + +static bool bfq_too_late_for_merging(struct bfq_queue *bfqq) +{ + return bfqq->service_from_backlogged > 0 && + time_is_before_jiffies(bfqq->first_IO_time + + bfq_merge_time_limit); +} + +static void bfq_pos_tree_add_move(struct bfq_data *bfqd, struct bfq_queue *bfqq) +{ + struct rb_node **p, *parent; + struct bfq_queue *__bfqq; + + if (bfqq->pos_root) { + rb_erase(&bfqq->pos_node, bfqq->pos_root); + bfqq->pos_root = NULL; + } + + /* + * bfqq cannot be merged any longer (see comments in + * bfq_setup_cooperator): no point in adding bfqq into the + * position tree. + */ + if (bfq_too_late_for_merging(bfqq)) + return; + + if (bfq_class_idle(bfqq)) + return; + if (!bfqq->next_rq) + return; + + bfqq->pos_root = &bfq_bfqq_to_bfqg(bfqq)->rq_pos_tree; + __bfqq = bfq_rq_pos_tree_lookup(bfqd, bfqq->pos_root, + blk_rq_pos(bfqq->next_rq), &parent, &p); + if (!__bfqq) { + rb_link_node(&bfqq->pos_node, parent, p); + rb_insert_color(&bfqq->pos_node, bfqq->pos_root); + } else + bfqq->pos_root = NULL; +} + +/* + * Tell whether there are active queues or groups with differentiated weights. + */ +static bool bfq_differentiated_weights(struct bfq_data *bfqd) +{ + /* + * For weights to differ, at least one of the trees must contain + * at least two nodes. + */ + return (!RB_EMPTY_ROOT(&bfqd->queue_weights_tree) && + (bfqd->queue_weights_tree.rb_node->rb_left || + bfqd->queue_weights_tree.rb_node->rb_right) +#ifdef BFQ_GROUP_IOSCHED_ENABLED + ) || + (!RB_EMPTY_ROOT(&bfqd->group_weights_tree) && + (bfqd->group_weights_tree.rb_node->rb_left || + bfqd->group_weights_tree.rb_node->rb_right) +#endif + ); +} + +/* + * The following function returns true if every queue must receive the + * same share of the throughput (this condition is used when deciding + * whether idling may be disabled, see the comments in the function + * bfq_better_to_idle()). + * + * Such a scenario occurs when: + * 1) all active queues have the same weight, + * 2) all active groups at the same level in the groups tree have the same + * weight, + * 3) all active groups at the same level in the groups tree have the same + * number of children. + * + * Unfortunately, keeping the necessary state for evaluating exactly the + * above symmetry conditions would be quite complex and time-consuming. + * Therefore this function evaluates, instead, the following stronger + * sub-conditions, for which it is much easier to maintain the needed + * state: + * 1) all active queues have the same weight, + * 2) all active groups have the same weight, + * 3) all active groups have at most one active child each. + * In particular, the last two conditions are always true if hierarchical + * support and the cgroups interface are not enabled, thus no state needs + * to be maintained in this case. + */ +static bool bfq_symmetric_scenario(struct bfq_data *bfqd) +{ + return !bfq_differentiated_weights(bfqd); +} + +/* + * If the weight-counter tree passed as input contains no counter for + * the weight of the input entity, then add that counter; otherwise just + * increment the existing counter. + * + * Note that weight-counter trees contain few nodes in mostly symmetric + * scenarios. For example, if all queues have the same weight, then the + * weight-counter tree for the queues may contain at most one node. + * This holds even if low_latency is on, because weight-raised queues + * are not inserted in the tree. + * In most scenarios, the rate at which nodes are created/destroyed + * should be low too. + */ +static void bfq_weights_tree_add(struct bfq_data *bfqd, + struct bfq_entity *entity, + struct rb_root *root) +{ + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + struct rb_node **new = &(root->rb_node), *parent = NULL; + + /* + * Do not insert if the entity is already associated with a + * counter, which happens if: + * 1) the entity is associated with a queue, + * 2) a request arrival has caused the queue to become both + * non-weight-raised, and hence change its weight, and + * backlogged; in this respect, each of the two events + * causes an invocation of this function, + * 3) this is the invocation of this function caused by the + * second event. This second invocation is actually useless, + * and we handle this fact by exiting immediately. More + * efficient or clearer solutions might possibly be adopted. + */ + if (entity->weight_counter) + return; + + while (*new) { + struct bfq_weight_counter *__counter = container_of(*new, + struct bfq_weight_counter, + weights_node); + parent = *new; + + if (entity->weight == __counter->weight) { + entity->weight_counter = __counter; + goto inc_counter; + } + if (entity->weight < __counter->weight) + new = &((*new)->rb_left); + else + new = &((*new)->rb_right); + } + + entity->weight_counter = kzalloc(sizeof(struct bfq_weight_counter), + GFP_ATOMIC); + + /* + * In the unlucky event of an allocation failure, we just + * exit. This will cause the weight of entity to not be + * considered in bfq_differentiated_weights, which, in its + * turn, causes the scenario to be deemed wrongly symmetric in + * case entity's weight would have been the only weight making + * the scenario asymmetric. On the bright side, no unbalance + * will however occur when entity becomes inactive again (the + * invocation of this function is triggered by an activation + * of entity). In fact, bfq_weights_tree_remove does nothing + * if !entity->weight_counter. + */ + if (unlikely(!entity->weight_counter)) + return; + + entity->weight_counter->weight = entity->weight; + rb_link_node(&entity->weight_counter->weights_node, parent, new); + rb_insert_color(&entity->weight_counter->weights_node, root); + +inc_counter: + entity->weight_counter->num_active++; + + if (bfqq) { + bfq_log_bfqq(bfqq->bfqd, bfqq, "[%s] weight %d symmetric %d", + __func__, entity->weight, + bfq_symmetric_scenario(bfqd)); +#ifdef BFQ_GROUP_IOSCHED_ENABLED + } else { + struct bfq_group *bfqg = + container_of(entity, struct bfq_group, entity); + + bfq_log_bfqg((struct bfq_data *)bfqg->bfqd, bfqg, + "[%s] weight %d symmetric %d", + __func__, entity->weight, + bfq_symmetric_scenario(bfqd)); +#endif + } +} + +/* + * Decrement the weight counter associated with the entity, and, if the + * counter reaches 0, remove the counter from the tree. + * See the comments to the function bfq_weights_tree_add() for considerations + * about overhead. + */ +static void __bfq_weights_tree_remove(struct bfq_data *bfqd, + struct bfq_entity *entity, + struct rb_root *root) +{ + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + + if (!entity->weight_counter) + return; + + BUG_ON(RB_EMPTY_ROOT(root)); + BUG_ON(entity->weight_counter->weight != entity->weight); + + BUG_ON(!entity->weight_counter->num_active); + entity->weight_counter->num_active--; + + if (entity->weight_counter->num_active > 0) + goto reset_entity_pointer; + + rb_erase(&entity->weight_counter->weights_node, root); + kfree(entity->weight_counter); + +reset_entity_pointer: + entity->weight_counter = NULL; + if (bfqq) { + bfq_log_bfqq(bfqq->bfqd, bfqq, + "[%s] weight %d symmetric %d", + __func__, entity->weight, + bfq_symmetric_scenario(bfqd)); +#ifdef BFQ_GROUP_IOSCHED_ENABLED + } else { + struct bfq_group *bfqg = + container_of(entity, struct bfq_group, entity); + + bfq_log_bfqg(bfqd, bfqg, + "[%s] weight %d symmetric %d", + __func__, entity->weight, + bfq_symmetric_scenario(bfqd)); +#endif + } +} + +/* + * Invoke __bfq_weights_tree_remove on bfqq and all its inactive + * parent entities. + */ +static void bfq_weights_tree_remove(struct bfq_data *bfqd, + struct bfq_queue *bfqq) +{ + struct bfq_entity *entity = bfqq->entity.parent; + + __bfq_weights_tree_remove(bfqd, &bfqq->entity, + &bfqd->queue_weights_tree); + + for_each_entity(entity) { + struct bfq_sched_data *sd = entity->my_sched_data; + + BUG_ON(entity->sched_data == NULL); /* + * It would mean + * that this is + * the root group. + */ + + if (sd->next_in_service || sd->in_service_entity) { + /* + * entity is still active, because either + * next_in_service or in_service_entity is not + * NULL (see the comments on the definition of + * next_in_service for details on why + * in_service_entity must be checked too). + * + * As a consequence, the weight of entity is + * not to be removed. In addition, if entity + * is active, then its parent entities are + * active as well, and thus their weights are + * not to be removed either. In the end, this + * loop must stop here. + */ + break; + } + __bfq_weights_tree_remove(bfqd, entity, + &bfqd->group_weights_tree); + } +} + +/* + * Return expired entry, or NULL to just start from scratch in rbtree. + */ +static struct request *bfq_check_fifo(struct bfq_queue *bfqq, + struct request *last) +{ + struct request *rq; + + if (bfq_bfqq_fifo_expire(bfqq)) + return NULL; + + bfq_mark_bfqq_fifo_expire(bfqq); + + rq = rq_entry_fifo(bfqq->fifo.next); + + if (rq == last || ktime_get_ns() < rq->fifo_time) + return NULL; + + bfq_log_bfqq(bfqq->bfqd, bfqq, "returned %p", rq); + BUG_ON(RB_EMPTY_NODE(&rq->rb_node)); + return rq; +} + +static struct request *bfq_find_next_rq(struct bfq_data *bfqd, + struct bfq_queue *bfqq, + struct request *last) +{ + struct rb_node *rbnext = rb_next(&last->rb_node); + struct rb_node *rbprev = rb_prev(&last->rb_node); + struct request *next, *prev = NULL; + + BUG_ON(list_empty(&bfqq->fifo)); + + /* Follow expired path, else get first next available. */ + next = bfq_check_fifo(bfqq, last); + if (next) { + BUG_ON(next == last); + return next; + } + + BUG_ON(RB_EMPTY_NODE(&last->rb_node)); + + if (rbprev) + prev = rb_entry_rq(rbprev); + + if (rbnext) + next = rb_entry_rq(rbnext); + else { + rbnext = rb_first(&bfqq->sort_list); + if (rbnext && rbnext != &last->rb_node) + next = rb_entry_rq(rbnext); + } + + return bfq_choose_req(bfqd, next, prev, blk_rq_pos(last)); +} + +/* see the definition of bfq_async_charge_factor for details */ +static unsigned long bfq_serv_to_charge(struct request *rq, + struct bfq_queue *bfqq) +{ + if (bfq_bfqq_sync(bfqq) || bfqq->wr_coeff > 1) + return blk_rq_sectors(rq); + + return blk_rq_sectors(rq) * bfq_async_charge_factor; +} + +/** + * bfq_updated_next_req - update the queue after a new next_rq selection. + * @bfqd: the device data the queue belongs to. + * @bfqq: the queue to update. + * + * If the first request of a queue changes we make sure that the queue + * has enough budget to serve at least its first request (if the + * request has grown). We do this because if the queue has not enough + * budget for its first request, it has to go through two dispatch + * rounds to actually get it dispatched. + */ +static void bfq_updated_next_req(struct bfq_data *bfqd, + struct bfq_queue *bfqq) +{ + struct bfq_entity *entity = &bfqq->entity; + struct bfq_service_tree *st = bfq_entity_service_tree(entity); + struct request *next_rq = bfqq->next_rq; + unsigned long new_budget; + + if (!next_rq) + return; + + if (bfqq == bfqd->in_service_queue) + /* + * In order not to break guarantees, budgets cannot be + * changed after an entity has been selected. + */ + return; + + BUG_ON(entity->tree != &st->active); + BUG_ON(entity == entity->sched_data->in_service_entity); + + new_budget = max_t(unsigned long, bfqq->max_budget, + bfq_serv_to_charge(next_rq, bfqq)); + if (entity->budget != new_budget) { + entity->budget = new_budget; + bfq_log_bfqq(bfqd, bfqq, "new budget %lu", + new_budget); + bfq_requeue_bfqq(bfqd, bfqq, false); + } +} + +static unsigned int bfq_wr_duration(struct bfq_data *bfqd) +{ + u64 dur; + + if (bfqd->bfq_wr_max_time > 0) + return bfqd->bfq_wr_max_time; + + dur = bfqd->rate_dur_prod; + do_div(dur, bfqd->peak_rate); + + /* + * Limit duration between 3 and 25 seconds. The upper limit + * has been conservatively set after the following worst case: + * on a QEMU/KVM virtual machine + * - running in a slow PC + * - with a virtual disk stacked on a slow low-end 5400rpm HDD + * - serving a heavy I/O workload, such as the sequential reading + * of several files + * mplayer took 23 seconds to start, if constantly weight-raised. + * + * As for higher values than that accomodating the above bad + * scenario, tests show that higher values would often yield + * the opposite of the desired result, i.e., would worsen + * responsiveness by allowing non-interactive applications to + * preserve weight raising for too long. + * + * On the other end, lower values than 3 seconds make it + * difficult for most interactive tasks to complete their jobs + * before weight-raising finishes. + */ + return clamp_val(dur, msecs_to_jiffies(3000), msecs_to_jiffies(25000)); +} + +/* switch back from soft real-time to interactive weight raising */ +static void switch_back_to_interactive_wr(struct bfq_queue *bfqq, + struct bfq_data *bfqd) +{ + bfqq->wr_coeff = bfqd->bfq_wr_coeff; + bfqq->wr_cur_max_time = bfq_wr_duration(bfqd); + bfqq->last_wr_start_finish = bfqq->wr_start_at_switch_to_srt; +} + +static void +bfq_bfqq_resume_state(struct bfq_queue *bfqq, struct bfq_data *bfqd, + struct bfq_io_cq *bic, bool bfq_already_existing) +{ + unsigned int old_wr_coeff; + bool busy = bfq_already_existing && bfq_bfqq_busy(bfqq); + + if (bic->saved_has_short_ttime) + bfq_mark_bfqq_has_short_ttime(bfqq); + else + bfq_clear_bfqq_has_short_ttime(bfqq); + + if (bic->saved_IO_bound) + bfq_mark_bfqq_IO_bound(bfqq); + else + bfq_clear_bfqq_IO_bound(bfqq); + + if (unlikely(busy)) + old_wr_coeff = bfqq->wr_coeff; + + bfqq->wr_coeff = bic->saved_wr_coeff; + bfqq->wr_start_at_switch_to_srt = bic->saved_wr_start_at_switch_to_srt; + BUG_ON(time_is_after_jiffies(bfqq->wr_start_at_switch_to_srt)); + bfqq->last_wr_start_finish = bic->saved_last_wr_start_finish; + bfqq->wr_cur_max_time = bic->saved_wr_cur_max_time; + BUG_ON(time_is_after_jiffies(bfqq->last_wr_start_finish)); + + bfq_log_bfqq(bfqq->bfqd, bfqq, + "bic %p wr_coeff %d start_finish %lu max_time %lu", + bic, bfqq->wr_coeff, bfqq->last_wr_start_finish, + bfqq->wr_cur_max_time); + + if (bfqq->wr_coeff > 1 && (bfq_bfqq_in_large_burst(bfqq) || + time_is_before_jiffies(bfqq->last_wr_start_finish + + bfqq->wr_cur_max_time))) { + if (bfqq->wr_cur_max_time == bfqd->bfq_wr_rt_max_time && + !bfq_bfqq_in_large_burst(bfqq) && + time_is_after_eq_jiffies(bfqq->wr_start_at_switch_to_srt + + bfq_wr_duration(bfqd))) { + switch_back_to_interactive_wr(bfqq, bfqd); + bfq_log_bfqq(bfqq->bfqd, bfqq, + "switching back to interactive"); + } else { + bfqq->wr_coeff = 1; + bfq_log_bfqq(bfqq->bfqd, bfqq, + "switching off wr (%lu + %lu < %lu)", + bfqq->last_wr_start_finish, bfqq->wr_cur_max_time, + jiffies); + } + } + + /* make sure weight will be updated, however we got here */ + bfqq->entity.prio_changed = 1; + + if (likely(!busy)) + return; + + if (old_wr_coeff == 1 && bfqq->wr_coeff > 1) { + bfqd->wr_busy_queues++; + BUG_ON(bfqd->wr_busy_queues > bfqd->busy_queues); + } else if (old_wr_coeff > 1 && bfqq->wr_coeff == 1) { + bfqd->wr_busy_queues--; + BUG_ON(bfqd->wr_busy_queues < 0); + } +} + +static int bfqq_process_refs(struct bfq_queue *bfqq) +{ + int process_refs, io_refs; + + lockdep_assert_held(bfqq->bfqd->queue->queue_lock); + + io_refs = bfqq->allocated[READ] + bfqq->allocated[WRITE]; + process_refs = bfqq->ref - io_refs - bfqq->entity.on_st; + BUG_ON(process_refs < 0); + return process_refs; +} + +/* Empty burst list and add just bfqq (see comments to bfq_handle_burst) */ +static void bfq_reset_burst_list(struct bfq_data *bfqd, struct bfq_queue *bfqq) +{ + struct bfq_queue *item; + struct hlist_node *n; + + hlist_for_each_entry_safe(item, n, &bfqd->burst_list, burst_list_node) + hlist_del_init(&item->burst_list_node); + hlist_add_head(&bfqq->burst_list_node, &bfqd->burst_list); + bfqd->burst_size = 1; + bfqd->burst_parent_entity = bfqq->entity.parent; +} + +/* Add bfqq to the list of queues in current burst (see bfq_handle_burst) */ +static void bfq_add_to_burst(struct bfq_data *bfqd, struct bfq_queue *bfqq) +{ + /* Increment burst size to take into account also bfqq */ + bfqd->burst_size++; + + bfq_log_bfqq(bfqd, bfqq, "%d", bfqd->burst_size); + + BUG_ON(bfqd->burst_size > bfqd->bfq_large_burst_thresh); + + if (bfqd->burst_size == bfqd->bfq_large_burst_thresh) { + struct bfq_queue *pos, *bfqq_item; + struct hlist_node *n; + + /* + * Enough queues have been activated shortly after each + * other to consider this burst as large. + */ + bfqd->large_burst = true; + bfq_log_bfqq(bfqd, bfqq, "large burst started"); + + /* + * We can now mark all queues in the burst list as + * belonging to a large burst. + */ + hlist_for_each_entry(bfqq_item, &bfqd->burst_list, + burst_list_node) { + bfq_mark_bfqq_in_large_burst(bfqq_item); + bfq_log_bfqq(bfqd, bfqq_item, "marked in large burst"); + } + bfq_mark_bfqq_in_large_burst(bfqq); + bfq_log_bfqq(bfqd, bfqq, "marked in large burst"); + + /* + * From now on, and until the current burst finishes, any + * new queue being activated shortly after the last queue + * was inserted in the burst can be immediately marked as + * belonging to a large burst. So the burst list is not + * needed any more. Remove it. + */ + hlist_for_each_entry_safe(pos, n, &bfqd->burst_list, + burst_list_node) + hlist_del_init(&pos->burst_list_node); + } else /* + * Burst not yet large: add bfqq to the burst list. Do + * not increment the ref counter for bfqq, because bfqq + * is removed from the burst list before freeing bfqq + * in put_queue. + */ + hlist_add_head(&bfqq->burst_list_node, &bfqd->burst_list); +} + +/* + * If many queues belonging to the same group happen to be created + * shortly after each other, then the processes associated with these + * queues have typically a common goal. In particular, bursts of queue + * creations are usually caused by services or applications that spawn + * many parallel threads/processes. Examples are systemd during boot, + * or git grep. To help these processes get their job done as soon as + * possible, it is usually better to not grant either weight-raising + * or device idling to their queues. + * + * In this comment we describe, firstly, the reasons why this fact + * holds, and, secondly, the next function, which implements the main + * steps needed to properly mark these queues so that they can then be + * treated in a different way. + * + * The above services or applications benefit mostly from a high + * throughput: the quicker the requests of the activated queues are + * cumulatively served, the sooner the target job of these queues gets + * completed. As a consequence, weight-raising any of these queues, + * which also implies idling the device for it, is almost always + * counterproductive. In most cases it just lowers throughput. + * + * On the other hand, a burst of queue creations may be caused also by + * the start of an application that does not consist of a lot of + * parallel I/O-bound threads. In fact, with a complex application, + * several short processes may need to be executed to start-up the + * application. In this respect, to start an application as quickly as + * possible, the best thing to do is in any case to privilege the I/O + * related to the application with respect to all other + * I/O. Therefore, the best strategy to start as quickly as possible + * an application that causes a burst of queue creations is to + * weight-raise all the queues created during the burst. This is the + * exact opposite of the best strategy for the other type of bursts. + * + * In the end, to take the best action for each of the two cases, the + * two types of bursts need to be distinguished. Fortunately, this + * seems relatively easy, by looking at the sizes of the bursts. In + * particular, we found a threshold such that only bursts with a + * larger size than that threshold are apparently caused by + * services or commands such as systemd or git grep. For brevity, + * hereafter we call just 'large' these bursts. BFQ *does not* + * weight-raise queues whose creation occurs in a large burst. In + * addition, for each of these queues BFQ performs or does not perform + * idling depending on which choice boosts the throughput more. The + * exact choice depends on the device and request pattern at + * hand. + * + * Unfortunately, false positives may occur while an interactive task + * is starting (e.g., an application is being started). The + * consequence is that the queues associated with the task do not + * enjoy weight raising as expected. Fortunately these false positives + * are very rare. They typically occur if some service happens to + * start doing I/O exactly when the interactive task starts. + * + * Turning back to the next function, it implements all the steps + * needed to detect the occurrence of a large burst and to properly + * mark all the queues belonging to it (so that they can then be + * treated in a different way). This goal is achieved by maintaining a + * "burst list" that holds, temporarily, the queues that belong to the + * burst in progress. The list is then used to mark these queues as + * belonging to a large burst if the burst does become large. The main + * steps are the following. + * + * . when the very first queue is created, the queue is inserted into the + * list (as it could be the first queue in a possible burst) + * + * . if the current burst has not yet become large, and a queue Q that does + * not yet belong to the burst is activated shortly after the last time + * at which a new queue entered the burst list, then the function appends + * Q to the burst list + * + * . if, as a consequence of the previous step, the burst size reaches + * the large-burst threshold, then + * + * . all the queues in the burst list are marked as belonging to a + * large burst + * + * . the burst list is deleted; in fact, the burst list already served + * its purpose (keeping temporarily track of the queues in a burst, + * so as to be able to mark them as belonging to a large burst in the + * previous sub-step), and now is not needed any more + * + * . the device enters a large-burst mode + * + * . if a queue Q that does not belong to the burst is created while + * the device is in large-burst mode and shortly after the last time + * at which a queue either entered the burst list or was marked as + * belonging to the current large burst, then Q is immediately marked + * as belonging to a large burst. + * + * . if a queue Q that does not belong to the burst is created a while + * later, i.e., not shortly after, than the last time at which a queue + * either entered the burst list or was marked as belonging to the + * current large burst, then the current burst is deemed as finished and: + * + * . the large-burst mode is reset if set + * + * . the burst list is emptied + * + * . Q is inserted in the burst list, as Q may be the first queue + * in a possible new burst (then the burst list contains just Q + * after this step). + */ +static void bfq_handle_burst(struct bfq_data *bfqd, struct bfq_queue *bfqq) +{ + /* + * If bfqq is already in the burst list or is part of a large + * burst, or finally has just been split, then there is + * nothing else to do. + */ + if (!hlist_unhashed(&bfqq->burst_list_node) || + bfq_bfqq_in_large_burst(bfqq) || + time_is_after_eq_jiffies(bfqq->split_time + + msecs_to_jiffies(10))) + return; + + /* + * If bfqq's creation happens late enough, or bfqq belongs to + * a different group than the burst group, then the current + * burst is finished, and related data structures must be + * reset. + * + * In this respect, consider the special case where bfqq is + * the very first queue created after BFQ is selected for this + * device. In this case, last_ins_in_burst and + * burst_parent_entity are not yet significant when we get + * here. But it is easy to verify that, whether or not the + * following condition is true, bfqq will end up being + * inserted into the burst list. In particular the list will + * happen to contain only bfqq. And this is exactly what has + * to happen, as bfqq may be the first queue of the first + * burst. + */ + if (time_is_before_jiffies(bfqd->last_ins_in_burst + + bfqd->bfq_burst_interval) || + bfqq->entity.parent != bfqd->burst_parent_entity) { + bfqd->large_burst = false; + bfq_reset_burst_list(bfqd, bfqq); + bfq_log_bfqq(bfqd, bfqq, + "late activation or different group"); + goto end; + } + + /* + * If we get here, then bfqq is being activated shortly after the + * last queue. So, if the current burst is also large, we can mark + * bfqq as belonging to this large burst immediately. + */ + if (bfqd->large_burst) { + bfq_log_bfqq(bfqd, bfqq, "marked in burst"); + bfq_mark_bfqq_in_large_burst(bfqq); + goto end; + } + + /* + * If we get here, then a large-burst state has not yet been + * reached, but bfqq is being activated shortly after the last + * queue. Then we add bfqq to the burst. + */ + bfq_add_to_burst(bfqd, bfqq); +end: + /* + * At this point, bfqq either has been added to the current + * burst or has caused the current burst to terminate and a + * possible new burst to start. In particular, in the second + * case, bfqq has become the first queue in the possible new + * burst. In both cases last_ins_in_burst needs to be moved + * forward. + */ + bfqd->last_ins_in_burst = jiffies; + +} + +static int bfq_bfqq_budget_left(struct bfq_queue *bfqq) +{ + struct bfq_entity *entity = &bfqq->entity; + + if (entity->budget < entity->service) { + pr_crit("budget %d service %d\n", + entity->budget, entity->service); + BUG(); + } + return entity->budget - entity->service; +} + +/* + * If enough samples have been computed, return the current max budget + * stored in bfqd, which is dynamically updated according to the + * estimated disk peak rate; otherwise return the default max budget + */ +static int bfq_max_budget(struct bfq_data *bfqd) +{ + if (bfqd->budgets_assigned < bfq_stats_min_budgets) + return bfq_default_max_budget; + else + return bfqd->bfq_max_budget; +} + +/* + * Return min budget, which is a fraction of the current or default + * max budget (trying with 1/32) + */ +static int bfq_min_budget(struct bfq_data *bfqd) +{ + if (bfqd->budgets_assigned < bfq_stats_min_budgets) + return bfq_default_max_budget / 32; + else + return bfqd->bfq_max_budget / 32; +} + +static void bfq_bfqq_expire(struct bfq_data *bfqd, + struct bfq_queue *bfqq, + bool compensate, + enum bfqq_expiration reason); + +/* + * The next function, invoked after the input queue bfqq switches from + * idle to busy, updates the budget of bfqq. The function also tells + * whether the in-service queue should be expired, by returning + * true. The purpose of expiring the in-service queue is to give bfqq + * the chance to possibly preempt the in-service queue, and the reason + * for preempting the in-service queue is to achieve one of the two + * goals below. + * + * 1. Guarantee to bfqq its reserved bandwidth even if bfqq has + * expired because it has remained idle. In particular, bfqq may have + * expired for one of the following two reasons: + * + * - BFQ_BFQQ_NO_MORE_REQUEST bfqq did not enjoy any device idling and + * did not make it to issue a new request before its last request + * was served; + * + * - BFQ_BFQQ_TOO_IDLE bfqq did enjoy device idling, but did not issue + * a new request before the expiration of the idling-time. + * + * Even if bfqq has expired for one of the above reasons, the process + * associated with the queue may be however issuing requests greedily, + * and thus be sensitive to the bandwidth it receives (bfqq may have + * remained idle for other reasons: CPU high load, bfqq not enjoying + * idling, I/O throttling somewhere in the path from the process to + * the I/O scheduler, ...). But if, after every expiration for one of + * the above two reasons, bfqq has to wait for the service of at least + * one full budget of another queue before being served again, then + * bfqq is likely to get a much lower bandwidth or resource time than + * its reserved ones. To address this issue, two countermeasures need + * to be taken. + * + * First, the budget and the timestamps of bfqq need to be updated in + * a special way on bfqq reactivation: they need to be updated as if + * bfqq did not remain idle and did not expire. In fact, if they are + * computed as if bfqq expired and remained idle until reactivation, + * then the process associated with bfqq is treated as if, instead of + * being greedy, it stopped issuing requests when bfqq remained idle, + * and restarts issuing requests only on this reactivation. In other + * words, the scheduler does not help the process recover the "service + * hole" between bfqq expiration and reactivation. As a consequence, + * the process receives a lower bandwidth than its reserved one. In + * contrast, to recover this hole, the budget must be updated as if + * bfqq was not expired at all before this reactivation, i.e., it must + * be set to the value of the remaining budget when bfqq was + * expired. Along the same line, timestamps need to be assigned the + * value they had the last time bfqq was selected for service, i.e., + * before last expiration. Thus timestamps need to be back-shifted + * with respect to their normal computation (see [1] for more details + * on this tricky aspect). + * + * Secondly, to allow the process to recover the hole, the in-service + * queue must be expired too, to give bfqq the chance to preempt it + * immediately. In fact, if bfqq has to wait for a full budget of the + * in-service queue to be completed, then it may become impossible to + * let the process recover the hole, even if the back-shifted + * timestamps of bfqq are lower than those of the in-service queue. If + * this happens for most or all of the holes, then the process may not + * receive its reserved bandwidth. In this respect, it is worth noting + * that, being the service of outstanding requests unpreemptible, a + * little fraction of the holes may however be unrecoverable, thereby + * causing a little loss of bandwidth. + * + * The last important point is detecting whether bfqq does need this + * bandwidth recovery. In this respect, the next function deems the + * process associated with bfqq greedy, and thus allows it to recover + * the hole, if: 1) the process is waiting for the arrival of a new + * request (which implies that bfqq expired for one of the above two + * reasons), and 2) such a request has arrived soon. The first + * condition is controlled through the flag non_blocking_wait_rq, + * while the second through the flag arrived_in_time. If both + * conditions hold, then the function computes the budget in the + * above-described special way, and signals that the in-service queue + * should be expired. Timestamp back-shifting is done later in + * __bfq_activate_entity. + * + * 2. Reduce latency. Even if timestamps are not backshifted to let + * the process associated with bfqq recover a service hole, bfqq may + * however happen to have, after being (re)activated, a lower finish + * timestamp than the in-service queue. That is, the next budget of + * bfqq may have to be completed before the one of the in-service + * queue. If this is the case, then preempting the in-service queue + * allows this goal to be achieved, apart from the unpreemptible, + * outstanding requests mentioned above. + * + * Unfortunately, regardless of which of the above two goals one wants + * to achieve, service trees need first to be updated to know whether + * the in-service queue must be preempted. To have service trees + * correctly updated, the in-service queue must be expired and + * rescheduled, and bfqq must be scheduled too. This is one of the + * most costly operations (in future versions, the scheduling + * mechanism may be re-designed in such a way to make it possible to + * know whether preemption is needed without needing to update service + * trees). In addition, queue preemptions almost always cause random + * I/O, and thus loss of throughput. Because of these facts, the next + * function adopts the following simple scheme to avoid both costly + * operations and too frequent preemptions: it requests the expiration + * of the in-service queue (unconditionally) only for queues that need + * to recover a hole, or that either are weight-raised or deserve to + * be weight-raised. + */ +static bool bfq_bfqq_update_budg_for_activation(struct bfq_data *bfqd, + struct bfq_queue *bfqq, + bool arrived_in_time, + bool wr_or_deserves_wr) +{ + struct bfq_entity *entity = &bfqq->entity; + + if (bfq_bfqq_non_blocking_wait_rq(bfqq) && arrived_in_time) { + /* + * We do not clear the flag non_blocking_wait_rq here, as + * the latter is used in bfq_activate_bfqq to signal + * that timestamps need to be back-shifted (and is + * cleared right after). + */ + + /* + * In next assignment we rely on that either + * entity->service or entity->budget are not updated + * on expiration if bfqq is empty (see + * __bfq_bfqq_recalc_budget). Thus both quantities + * remain unchanged after such an expiration, and the + * following statement therefore assigns to + * entity->budget the remaining budget on such an + * expiration. + */ + BUG_ON(bfqq->max_budget < 0); + entity->budget = min_t(unsigned long, + bfq_bfqq_budget_left(bfqq), + bfqq->max_budget); + + BUG_ON(entity->budget < 0); + + /* + * At this point, we have used entity->service to get + * the budget left (needed for updating + * entity->budget). Thus we finally can, and have to, + * reset entity->service. The latter must be reset + * because bfqq would otherwise be charged again for + * the service it has received during its previous + * service slot(s). + */ + entity->service = 0; + + return true; + } + + /* + * We can finally complete expiration, by setting service to 0. + */ + entity->service = 0; + BUG_ON(bfqq->max_budget < 0); + entity->budget = max_t(unsigned long, bfqq->max_budget, + bfq_serv_to_charge(bfqq->next_rq, bfqq)); + BUG_ON(entity->budget < 0); + + bfq_clear_bfqq_non_blocking_wait_rq(bfqq); + return wr_or_deserves_wr; +} + +/* + * Return the farthest past time instant according to jiffies + * macros. + */ +static unsigned long bfq_smallest_from_now(void) +{ + return jiffies - MAX_JIFFY_OFFSET; +} + +static void bfq_update_bfqq_wr_on_rq_arrival(struct bfq_data *bfqd, + struct bfq_queue *bfqq, + unsigned int old_wr_coeff, + bool wr_or_deserves_wr, + bool interactive, + bool in_burst, + bool soft_rt) +{ + if (old_wr_coeff == 1 && wr_or_deserves_wr) { + /* start a weight-raising period */ + if (interactive) { + bfqq->service_from_wr = 0; + bfqq->wr_coeff = bfqd->bfq_wr_coeff; + bfqq->wr_cur_max_time = bfq_wr_duration(bfqd); + } else { + /* + * No interactive weight raising in progress + * here: assign minus infinity to + * wr_start_at_switch_to_srt, to make sure + * that, at the end of the soft-real-time + * weight raising periods that is starting + * now, no interactive weight-raising period + * may be wrongly considered as still in + * progress (and thus actually started by + * mistake). + */ + bfqq->wr_start_at_switch_to_srt = + bfq_smallest_from_now(); + bfqq->wr_coeff = bfqd->bfq_wr_coeff * + BFQ_SOFTRT_WEIGHT_FACTOR; + bfqq->wr_cur_max_time = + bfqd->bfq_wr_rt_max_time; + } + /* + * If needed, further reduce budget to make sure it is + * close to bfqq's backlog, so as to reduce the + * scheduling-error component due to a too large + * budget. Do not care about throughput consequences, + * but only about latency. Finally, do not assign a + * too small budget either, to avoid increasing + * latency by causing too frequent expirations. + */ + bfqq->entity.budget = min_t(unsigned long, + bfqq->entity.budget, + 2 * bfq_min_budget(bfqd)); + + bfq_log_bfqq(bfqd, bfqq, + "wrais starting at %lu, rais_max_time %u", + jiffies, + jiffies_to_msecs(bfqq->wr_cur_max_time)); + } else if (old_wr_coeff > 1) { + if (interactive) { /* update wr coeff and duration */ + bfqq->wr_coeff = bfqd->bfq_wr_coeff; + bfqq->wr_cur_max_time = bfq_wr_duration(bfqd); + } else if (in_burst) { + bfqq->wr_coeff = 1; + bfq_log_bfqq(bfqd, bfqq, + "wrais ending at %lu, rais_max_time %u", + jiffies, + jiffies_to_msecs(bfqq-> + wr_cur_max_time)); + } else if (soft_rt) { + /* + * The application is now or still meeting the + * requirements for being deemed soft rt. We + * can then correctly and safely (re)charge + * the weight-raising duration for the + * application with the weight-raising + * duration for soft rt applications. + * + * In particular, doing this recharge now, i.e., + * before the weight-raising period for the + * application finishes, reduces the probability + * of the following negative scenario: + * 1) the weight of a soft rt application is + * raised at startup (as for any newly + * created application), + * 2) since the application is not interactive, + * at a certain time weight-raising is + * stopped for the application, + * 3) at that time the application happens to + * still have pending requests, and hence + * is destined to not have a chance to be + * deemed soft rt before these requests are + * completed (see the comments to the + * function bfq_bfqq_softrt_next_start() + * for details on soft rt detection), + * 4) these pending requests experience a high + * latency because the application is not + * weight-raised while they are pending. + */ + if (bfqq->wr_cur_max_time != + bfqd->bfq_wr_rt_max_time) { + bfqq->wr_start_at_switch_to_srt = + bfqq->last_wr_start_finish; + BUG_ON(time_is_after_jiffies(bfqq->last_wr_start_finish)); + + bfqq->wr_cur_max_time = + bfqd->bfq_wr_rt_max_time; + bfqq->wr_coeff = bfqd->bfq_wr_coeff * + BFQ_SOFTRT_WEIGHT_FACTOR; + bfq_log_bfqq(bfqd, bfqq, + "switching to soft_rt wr"); + } else + bfq_log_bfqq(bfqd, bfqq, + "moving forward soft_rt wr duration"); + bfqq->last_wr_start_finish = jiffies; + } + } +} + +static bool bfq_bfqq_idle_for_long_time(struct bfq_data *bfqd, + struct bfq_queue *bfqq) +{ + return bfqq->dispatched == 0 && + time_is_before_jiffies( + bfqq->budget_timeout + + bfqd->bfq_wr_min_idle_time); +} + +static void bfq_bfqq_handle_idle_busy_switch(struct bfq_data *bfqd, + struct bfq_queue *bfqq, + int old_wr_coeff, + struct request *rq, + bool *interactive) +{ + bool soft_rt, in_burst, wr_or_deserves_wr, + bfqq_wants_to_preempt, + idle_for_long_time = bfq_bfqq_idle_for_long_time(bfqd, bfqq), + /* + * See the comments on + * bfq_bfqq_update_budg_for_activation for + * details on the usage of the next variable. + */ + arrived_in_time = ktime_get_ns() <= + RQ_BIC(rq)->ttime.last_end_request + + bfqd->bfq_slice_idle * 3; + + bfq_log_bfqq(bfqd, bfqq, + "bfq_add_request non-busy: " + "jiffies %lu, in_time %d, idle_long %d busyw %d " + "wr_coeff %u", + jiffies, arrived_in_time, + idle_for_long_time, + bfq_bfqq_non_blocking_wait_rq(bfqq), + old_wr_coeff); + + BUG_ON(bfqq->entity.budget < bfqq->entity.service); + + BUG_ON(bfqq == bfqd->in_service_queue); + bfqg_stats_update_io_add(bfqq_group(RQ_BFQQ(rq)), bfqq, rq->cmd_flags); + + /* + * bfqq deserves to be weight-raised if: + * - it is sync, + * - it does not belong to a large burst, + * - it has been idle for enough time or is soft real-time, + * - is linked to a bfq_io_cq (it is not shared in any sense) + */ + in_burst = bfq_bfqq_in_large_burst(bfqq); + soft_rt = bfqd->bfq_wr_max_softrt_rate > 0 && + !in_burst && + time_is_before_jiffies(bfqq->soft_rt_next_start) && + bfqq->dispatched == 0; + *interactive = + !in_burst && + idle_for_long_time; + wr_or_deserves_wr = bfqd->low_latency && + (bfqq->wr_coeff > 1 || + (bfq_bfqq_sync(bfqq) && + bfqq->bic && (*interactive || soft_rt))); + + bfq_log_bfqq(bfqd, bfqq, + "bfq_add_request: " + "in_burst %d, " + "soft_rt %d (next %lu), inter %d, bic %p", + bfq_bfqq_in_large_burst(bfqq), soft_rt, + bfqq->soft_rt_next_start, + *interactive, + bfqq->bic); + + /* + * Using the last flag, update budget and check whether bfqq + * may want to preempt the in-service queue. + */ + bfqq_wants_to_preempt = + bfq_bfqq_update_budg_for_activation(bfqd, bfqq, + arrived_in_time, + wr_or_deserves_wr); + + /* + * If bfqq happened to be activated in a burst, but has been + * idle for much more than an interactive queue, then we + * assume that, in the overall I/O initiated in the burst, the + * I/O associated with bfqq is finished. So bfqq does not need + * to be treated as a queue belonging to a burst + * anymore. Accordingly, we reset bfqq's in_large_burst flag + * if set, and remove bfqq from the burst list if it's + * there. We do not decrement burst_size, because the fact + * that bfqq does not need to belong to the burst list any + * more does not invalidate the fact that bfqq was created in + * a burst. + */ + if (likely(!bfq_bfqq_just_created(bfqq)) && + idle_for_long_time && + time_is_before_jiffies( + bfqq->budget_timeout + + msecs_to_jiffies(10000))) { + hlist_del_init(&bfqq->burst_list_node); + bfq_clear_bfqq_in_large_burst(bfqq); + } + + bfq_clear_bfqq_just_created(bfqq); + + if (!bfq_bfqq_IO_bound(bfqq)) { + if (arrived_in_time) { + bfqq->requests_within_timer++; + if (bfqq->requests_within_timer >= + bfqd->bfq_requests_within_timer) + bfq_mark_bfqq_IO_bound(bfqq); + } else + bfqq->requests_within_timer = 0; + bfq_log_bfqq(bfqd, bfqq, "requests in time %d", + bfqq->requests_within_timer); + } + + if (bfqd->low_latency) { + if (unlikely(time_is_after_jiffies(bfqq->split_time))) + /* wraparound */ + bfqq->split_time = + jiffies - bfqd->bfq_wr_min_idle_time - 1; + + if (time_is_before_jiffies(bfqq->split_time + + bfqd->bfq_wr_min_idle_time)) { + bfq_update_bfqq_wr_on_rq_arrival(bfqd, bfqq, + old_wr_coeff, + wr_or_deserves_wr, + *interactive, + in_burst, + soft_rt); + + if (old_wr_coeff != bfqq->wr_coeff) + bfqq->entity.prio_changed = 1; + } + } + + bfqq->last_idle_bklogged = jiffies; + bfqq->service_from_backlogged = 0; + bfq_clear_bfqq_softrt_update(bfqq); + + bfq_add_bfqq_busy(bfqd, bfqq); + + /* + * Expire in-service queue only if preemption may be needed + * for guarantees. In this respect, the function + * next_queue_may_preempt just checks a simple, necessary + * condition, and not a sufficient condition based on + * timestamps. In fact, for the latter condition to be + * evaluated, timestamps would need first to be updated, and + * this operation is quite costly (see the comments on the + * function bfq_bfqq_update_budg_for_activation). + */ + if (bfqd->in_service_queue && bfqq_wants_to_preempt && + bfqd->in_service_queue->wr_coeff < bfqq->wr_coeff && + next_queue_may_preempt(bfqd)) { + struct bfq_queue *in_serv = + bfqd->in_service_queue; + BUG_ON(in_serv == bfqq); + + bfq_bfqq_expire(bfqd, bfqd->in_service_queue, + false, BFQ_BFQQ_PREEMPTED); + } +} + +static void bfq_add_request(struct request *rq) +{ + struct bfq_queue *bfqq = RQ_BFQQ(rq); + struct bfq_data *bfqd = bfqq->bfqd; + struct request *next_rq, *prev; + unsigned int old_wr_coeff = bfqq->wr_coeff; + bool interactive = false; + + bfq_log_bfqq(bfqd, bfqq, "size %u %s", + blk_rq_sectors(rq), rq_is_sync(rq) ? "S" : "A"); + + if (bfqq->wr_coeff > 1) /* queue is being weight-raised */ + bfq_log_bfqq(bfqd, bfqq, + "raising period dur %u/%u msec, old coeff %u, w %d(%d)", + jiffies_to_msecs(jiffies - bfqq->last_wr_start_finish), + jiffies_to_msecs(bfqq->wr_cur_max_time), + bfqq->wr_coeff, + bfqq->entity.weight, bfqq->entity.orig_weight); + + bfqq->queued[rq_is_sync(rq)]++; + bfqd->queued++; + + elv_rb_add(&bfqq->sort_list, rq); + + /* + * Check if this request is a better next-to-serve candidate. + */ + prev = bfqq->next_rq; + next_rq = bfq_choose_req(bfqd, bfqq->next_rq, rq, bfqd->last_position); + BUG_ON(!next_rq); + bfqq->next_rq = next_rq; + + /* + * Adjust priority tree position, if next_rq changes. + */ + if (prev != bfqq->next_rq) + bfq_pos_tree_add_move(bfqd, bfqq); + + if (!bfq_bfqq_busy(bfqq)) /* switching to busy ... */ + bfq_bfqq_handle_idle_busy_switch(bfqd, bfqq, old_wr_coeff, + rq, &interactive); + else { + if (bfqd->low_latency && old_wr_coeff == 1 && !rq_is_sync(rq) && + time_is_before_jiffies( + bfqq->last_wr_start_finish + + bfqd->bfq_wr_min_inter_arr_async)) { + bfqq->wr_coeff = bfqd->bfq_wr_coeff; + bfqq->wr_cur_max_time = bfq_wr_duration(bfqd); + + bfqd->wr_busy_queues++; + BUG_ON(bfqd->wr_busy_queues > bfqd->busy_queues); + bfqq->entity.prio_changed = 1; + bfq_log_bfqq(bfqd, bfqq, + "non-idle wrais starting, " + "wr_max_time %u wr_busy %d", + jiffies_to_msecs(bfqq->wr_cur_max_time), + bfqd->wr_busy_queues); + } + if (prev != bfqq->next_rq) + bfq_updated_next_req(bfqd, bfqq); + } + + /* + * Assign jiffies to last_wr_start_finish in the following + * cases: + * + * . if bfqq is not going to be weight-raised, because, for + * non weight-raised queues, last_wr_start_finish stores the + * arrival time of the last request; as of now, this piece + * of information is used only for deciding whether to + * weight-raise async queues + * + * . if bfqq is not weight-raised, because, if bfqq is now + * switching to weight-raised, then last_wr_start_finish + * stores the time when weight-raising starts + * + * . if bfqq is interactive, because, regardless of whether + * bfqq is currently weight-raised, the weight-raising + * period must start or restart (this case is considered + * separately because it is not detected by the above + * conditions, if bfqq is already weight-raised) + * + * last_wr_start_finish has to be updated also if bfqq is soft + * real-time, because the weight-raising period is constantly + * restarted on idle-to-busy transitions for these queues, but + * this is already done in bfq_bfqq_handle_idle_busy_switch if + * needed. + */ + if (bfqd->low_latency && + (old_wr_coeff == 1 || bfqq->wr_coeff == 1 || interactive)) + bfqq->last_wr_start_finish = jiffies; +} + +static struct request *bfq_find_rq_fmerge(struct bfq_data *bfqd, + struct bio *bio) +{ + struct task_struct *tsk = current; + struct bfq_io_cq *bic; + struct bfq_queue *bfqq; + + bic = bfq_bic_lookup(bfqd, tsk->io_context); + if (!bic) + return NULL; + + bfqq = bic_to_bfqq(bic, op_is_sync(bio->bi_opf)); + if (bfqq) + return elv_rb_find(&bfqq->sort_list, bio_end_sector(bio)); + + return NULL; +} + +static sector_t get_sdist(sector_t last_pos, struct request *rq) +{ + sector_t sdist = 0; + + if (last_pos) { + if (last_pos < blk_rq_pos(rq)) + sdist = blk_rq_pos(rq) - last_pos; + else + sdist = last_pos - blk_rq_pos(rq); + } + + return sdist; +} + +static void bfq_activate_request(struct request_queue *q, struct request *rq) +{ + struct bfq_data *bfqd = q->elevator->elevator_data; + bfqd->rq_in_driver++; +} + +static void bfq_deactivate_request(struct request_queue *q, struct request *rq) +{ + struct bfq_data *bfqd = q->elevator->elevator_data; + + BUG_ON(bfqd->rq_in_driver == 0); + bfqd->rq_in_driver--; +} + +static void bfq_remove_request(struct request *rq) +{ + struct bfq_queue *bfqq = RQ_BFQQ(rq); + struct bfq_data *bfqd = bfqq->bfqd; + const int sync = rq_is_sync(rq); + + BUG_ON(bfqq->entity.service > bfqq->entity.budget); + + if (bfqq->next_rq == rq) { + bfqq->next_rq = bfq_find_next_rq(bfqd, bfqq, rq); + bfq_updated_next_req(bfqd, bfqq); + } + + if (rq->queuelist.prev != &rq->queuelist) + list_del_init(&rq->queuelist); + BUG_ON(bfqq->queued[sync] == 0); + bfqq->queued[sync]--; + bfqd->queued--; + elv_rb_del(&bfqq->sort_list, rq); + + if (RB_EMPTY_ROOT(&bfqq->sort_list)) { + bfqq->next_rq = NULL; + + BUG_ON(bfqq->entity.budget < 0); + + if (bfq_bfqq_busy(bfqq) && bfqq != bfqd->in_service_queue) { + BUG_ON(bfqq->ref < 2); /* referred by rq and on tree */ + bfq_del_bfqq_busy(bfqd, bfqq, false); + /* + * bfqq emptied. In normal operation, when + * bfqq is empty, bfqq->entity.service and + * bfqq->entity.budget must contain, + * respectively, the service received and the + * budget used last time bfqq emptied. These + * facts do not hold in this case, as at least + * this last removal occurred while bfqq is + * not in service. To avoid inconsistencies, + * reset both bfqq->entity.service and + * bfqq->entity.budget, if bfqq has still a + * process that may issue I/O requests to it. + */ + bfqq->entity.budget = bfqq->entity.service = 0; + } + + /* + * Remove queue from request-position tree as it is empty. + */ + if (bfqq->pos_root) { + rb_erase(&bfqq->pos_node, bfqq->pos_root); + bfqq->pos_root = NULL; + } + } else { + BUG_ON(!bfqq->next_rq); + bfq_pos_tree_add_move(bfqd, bfqq); + } + + if (rq->cmd_flags & REQ_META) { + BUG_ON(bfqq->meta_pending == 0); + bfqq->meta_pending--; + } + bfqg_stats_update_io_remove(bfqq_group(bfqq), rq->cmd_flags); +} + +static enum elv_merge bfq_merge(struct request_queue *q, struct request **req, + struct bio *bio) +{ + struct bfq_data *bfqd = q->elevator->elevator_data; + struct request *__rq; + + __rq = bfq_find_rq_fmerge(bfqd, bio); + if (__rq && elv_bio_merge_ok(__rq, bio)) { + *req = __rq; + return ELEVATOR_FRONT_MERGE; + } + + return ELEVATOR_NO_MERGE; +} + +static void bfq_merged_request(struct request_queue *q, struct request *req, + enum elv_merge type) +{ + if (type == ELEVATOR_FRONT_MERGE && + rb_prev(&req->rb_node) && + blk_rq_pos(req) < + blk_rq_pos(container_of(rb_prev(&req->rb_node), + struct request, rb_node))) { + struct bfq_queue *bfqq = RQ_BFQQ(req); + struct bfq_data *bfqd = bfqq->bfqd; + struct request *prev, *next_rq; + + /* Reposition request in its sort_list */ + elv_rb_del(&bfqq->sort_list, req); + elv_rb_add(&bfqq->sort_list, req); + /* Choose next request to be served for bfqq */ + prev = bfqq->next_rq; + next_rq = bfq_choose_req(bfqd, bfqq->next_rq, req, + bfqd->last_position); + BUG_ON(!next_rq); + bfqq->next_rq = next_rq; + /* + * If next_rq changes, update both the queue's budget to + * fit the new request and the queue's position in its + * rq_pos_tree. + */ + if (prev != bfqq->next_rq) { + bfq_updated_next_req(bfqd, bfqq); + bfq_pos_tree_add_move(bfqd, bfqq); + } + } +} + +#ifdef BFQ_GROUP_IOSCHED_ENABLED +static void bfq_bio_merged(struct request_queue *q, struct request *req, + struct bio *bio) +{ + bfqg_stats_update_io_merged(bfqq_group(RQ_BFQQ(req)), bio->bi_opf); +} +#endif + +static void bfq_merged_requests(struct request_queue *q, struct request *rq, + struct request *next) +{ + struct bfq_queue *bfqq = RQ_BFQQ(rq), *next_bfqq = RQ_BFQQ(next); + + /* + * If next and rq belong to the same bfq_queue and next is older + * than rq, then reposition rq in the fifo (by substituting next + * with rq). Otherwise, if next and rq belong to different + * bfq_queues, never reposition rq: in fact, we would have to + * reposition it with respect to next's position in its own fifo, + * which would most certainly be too expensive with respect to + * the benefits. + */ + if (bfqq == next_bfqq && + !list_empty(&rq->queuelist) && !list_empty(&next->queuelist) && + next->fifo_time < rq->fifo_time) { + list_del_init(&rq->queuelist); + list_replace_init(&next->queuelist, &rq->queuelist); + rq->fifo_time = next->fifo_time; + } + + if (bfqq->next_rq == next) + bfqq->next_rq = rq; + + bfq_remove_request(next); + bfqg_stats_update_io_merged(bfqq_group(bfqq), next->cmd_flags); +} + +/* Must be called with bfqq != NULL */ +static void bfq_bfqq_end_wr(struct bfq_queue *bfqq) +{ + BUG_ON(!bfqq); + + if (bfq_bfqq_busy(bfqq)) { + bfqq->bfqd->wr_busy_queues--; + BUG_ON(bfqq->bfqd->wr_busy_queues < 0); + } + bfqq->wr_coeff = 1; + bfqq->wr_cur_max_time = 0; + bfqq->last_wr_start_finish = jiffies; + /* + * Trigger a weight change on the next invocation of + * __bfq_entity_update_weight_prio. + */ + bfqq->entity.prio_changed = 1; + bfq_log_bfqq(bfqq->bfqd, bfqq, + "wrais ending at %lu, rais_max_time %u", + bfqq->last_wr_start_finish, + jiffies_to_msecs(bfqq->wr_cur_max_time)); + bfq_log_bfqq(bfqq->bfqd, bfqq, "wr_busy %d", + bfqq->bfqd->wr_busy_queues); +} + +static void bfq_end_wr_async_queues(struct bfq_data *bfqd, + struct bfq_group *bfqg) +{ + int i, j; + + for (i = 0; i < 2; i++) + for (j = 0; j < IOPRIO_BE_NR; j++) + if (bfqg->async_bfqq[i][j]) + bfq_bfqq_end_wr(bfqg->async_bfqq[i][j]); + if (bfqg->async_idle_bfqq) + bfq_bfqq_end_wr(bfqg->async_idle_bfqq); +} + +static void bfq_end_wr(struct bfq_data *bfqd) +{ + struct bfq_queue *bfqq; + + spin_lock_irq(bfqd->queue->queue_lock); + + list_for_each_entry(bfqq, &bfqd->active_list, bfqq_list) + bfq_bfqq_end_wr(bfqq); + list_for_each_entry(bfqq, &bfqd->idle_list, bfqq_list) + bfq_bfqq_end_wr(bfqq); + bfq_end_wr_async(bfqd); + + spin_unlock_irq(bfqd->queue->queue_lock); +} + +static sector_t bfq_io_struct_pos(void *io_struct, bool request) +{ + if (request) + return blk_rq_pos(io_struct); + else + return ((struct bio *)io_struct)->bi_iter.bi_sector; +} + +static int bfq_rq_close_to_sector(void *io_struct, bool request, + sector_t sector) +{ + return abs(bfq_io_struct_pos(io_struct, request) - sector) <= + BFQQ_CLOSE_THR; +} + +static struct bfq_queue *bfqq_find_close(struct bfq_data *bfqd, + struct bfq_queue *bfqq, + sector_t sector) +{ + struct rb_root *root = &bfq_bfqq_to_bfqg(bfqq)->rq_pos_tree; + struct rb_node *parent, *node; + struct bfq_queue *__bfqq; + + if (RB_EMPTY_ROOT(root)) + return NULL; + + /* + * First, if we find a request starting at the end of the last + * request, choose it. + */ + __bfqq = bfq_rq_pos_tree_lookup(bfqd, root, sector, &parent, NULL); + if (__bfqq) + return __bfqq; + + /* + * If the exact sector wasn't found, the parent of the NULL leaf + * will contain the closest sector (rq_pos_tree sorted by + * next_request position). + */ + __bfqq = rb_entry(parent, struct bfq_queue, pos_node); + if (bfq_rq_close_to_sector(__bfqq->next_rq, true, sector)) + return __bfqq; + + if (blk_rq_pos(__bfqq->next_rq) < sector) + node = rb_next(&__bfqq->pos_node); + else + node = rb_prev(&__bfqq->pos_node); + if (!node) + return NULL; + + __bfqq = rb_entry(node, struct bfq_queue, pos_node); + if (bfq_rq_close_to_sector(__bfqq->next_rq, true, sector)) + return __bfqq; + + return NULL; +} + +static struct bfq_queue *bfq_find_close_cooperator(struct bfq_data *bfqd, + struct bfq_queue *cur_bfqq, + sector_t sector) +{ + struct bfq_queue *bfqq; + + /* + * We shall notice if some of the queues are cooperating, + * e.g., working closely on the same area of the device. In + * that case, we can group them together and: 1) don't waste + * time idling, and 2) serve the union of their requests in + * the best possible order for throughput. + */ + bfqq = bfqq_find_close(bfqd, cur_bfqq, sector); + if (!bfqq || bfqq == cur_bfqq) + return NULL; + + return bfqq; +} + +static struct bfq_queue * +bfq_setup_merge(struct bfq_queue *bfqq, struct bfq_queue *new_bfqq) +{ + int process_refs, new_process_refs; + struct bfq_queue *__bfqq; + + /* + * If there are no process references on the new_bfqq, then it is + * unsafe to follow the ->new_bfqq chain as other bfqq's in the chain + * may have dropped their last reference (not just their last process + * reference). + */ + if (!bfqq_process_refs(new_bfqq)) + return NULL; + + /* Avoid a circular list and skip interim queue merges. */ + while ((__bfqq = new_bfqq->new_bfqq)) { + if (__bfqq == bfqq) + return NULL; + new_bfqq = __bfqq; + } + + process_refs = bfqq_process_refs(bfqq); + new_process_refs = bfqq_process_refs(new_bfqq); + /* + * If the process for the bfqq has gone away, there is no + * sense in merging the queues. + */ + if (process_refs == 0 || new_process_refs == 0) + return NULL; + + bfq_log_bfqq(bfqq->bfqd, bfqq, "scheduling merge with queue %d", + new_bfqq->pid); + + /* + * Merging is just a redirection: the requests of the process + * owning one of the two queues are redirected to the other queue. + * The latter queue, in its turn, is set as shared if this is the + * first time that the requests of some process are redirected to + * it. + * + * We redirect bfqq to new_bfqq and not the opposite, because we + * are in the context of the process owning bfqq, hence we have + * the io_cq of this process. So we can immediately configure this + * io_cq to redirect the requests of the process to new_bfqq. + * + * NOTE, even if new_bfqq coincides with the in-service queue, the + * io_cq of new_bfqq is not available, because, if the in-service + * queue is shared, bfqd->in_service_bic may not point to the + * io_cq of the in-service queue. + * Redirecting the requests of the process owning bfqq to the + * currently in-service queue is in any case the best option, as + * we feed the in-service queue with new requests close to the + * last request served and, by doing so, hopefully increase the + * throughput. + */ + bfqq->new_bfqq = new_bfqq; + new_bfqq->ref += process_refs; + return new_bfqq; +} + +static bool bfq_may_be_close_cooperator(struct bfq_queue *bfqq, + struct bfq_queue *new_bfqq) +{ + if (bfq_too_late_for_merging(new_bfqq)) { + bfq_log_bfqq(bfqq->bfqd, bfqq, + "too late for bfq%d to be merged", + new_bfqq->pid); + return false; + } + + if (bfq_class_idle(bfqq) || bfq_class_idle(new_bfqq) || + (bfqq->ioprio_class != new_bfqq->ioprio_class)) + return false; + + /* + * If either of the queues has already been detected as seeky, + * then merging it with the other queue is unlikely to lead to + * sequential I/O. + */ + if (BFQQ_SEEKY(bfqq) || BFQQ_SEEKY(new_bfqq)) + return false; + + /* + * Interleaved I/O is known to be done by (some) applications + * only for reads, so it does not make sense to merge async + * queues. + */ + if (!bfq_bfqq_sync(bfqq) || !bfq_bfqq_sync(new_bfqq)) + return false; + + return true; +} + +/* + * Attempt to schedule a merge of bfqq with the currently in-service + * queue or with a close queue among the scheduled queues. Return + * NULL if no merge was scheduled, a pointer to the shared bfq_queue + * structure otherwise. + * + * The OOM queue is not allowed to participate to cooperation: in fact, since + * the requests temporarily redirected to the OOM queue could be redirected + * again to dedicated queues at any time, the state needed to correctly + * handle merging with the OOM queue would be quite complex and expensive + * to maintain. Besides, in such a critical condition as an out of memory, + * the benefits of queue merging may be little relevant, or even negligible. + * + * WARNING: queue merging may impair fairness among non-weight raised + * queues, for at least two reasons: 1) the original weight of a + * merged queue may change during the merged state, 2) even being the + * weight the same, a merged queue may be bloated with many more + * requests than the ones produced by its originally-associated + * process. + */ +static struct bfq_queue * +bfq_setup_cooperator(struct bfq_data *bfqd, struct bfq_queue *bfqq, + void *io_struct, bool request) +{ + struct bfq_queue *in_service_bfqq, *new_bfqq; + + /* + * Prevent bfqq from being merged if it has been created too + * long ago. The idea is that true cooperating processes, and + * thus their associated bfq_queues, are supposed to be + * created shortly after each other. This is the case, e.g., + * for KVM/QEMU and dump I/O threads. Basing on this + * assumption, the following filtering greatly reduces the + * probability that two non-cooperating processes, which just + * happen to do close I/O for some short time interval, have + * their queues merged by mistake. + */ + if (bfq_too_late_for_merging(bfqq)) { + bfq_log_bfqq(bfqd, bfqq, + "would have looked for coop, but too late"); + return NULL; + } + + if (bfqq->new_bfqq) + return bfqq->new_bfqq; + + if (!io_struct || unlikely(bfqq == &bfqd->oom_bfqq)) + return NULL; + + /* If there is only one backlogged queue, don't search. */ + if (bfqd->busy_queues == 1) + return NULL; + + in_service_bfqq = bfqd->in_service_queue; + + if (in_service_bfqq && in_service_bfqq != bfqq && + likely(in_service_bfqq != &bfqd->oom_bfqq) && + bfq_rq_close_to_sector(io_struct, request, bfqd->last_position) && + bfqq->entity.parent == in_service_bfqq->entity.parent && + bfq_may_be_close_cooperator(bfqq, in_service_bfqq)) { + new_bfqq = bfq_setup_merge(bfqq, in_service_bfqq); + if (new_bfqq) + return new_bfqq; + } + /* + * Check whether there is a cooperator among currently scheduled + * queues. The only thing we need is that the bio/request is not + * NULL, as we need it to establish whether a cooperator exists. + */ + new_bfqq = bfq_find_close_cooperator(bfqd, bfqq, + bfq_io_struct_pos(io_struct, request)); + + BUG_ON(new_bfqq && bfqq->entity.parent != new_bfqq->entity.parent); + + if (new_bfqq && likely(new_bfqq != &bfqd->oom_bfqq) && + bfq_may_be_close_cooperator(bfqq, new_bfqq)) + return bfq_setup_merge(bfqq, new_bfqq); + + return NULL; +} + +static void bfq_bfqq_save_state(struct bfq_queue *bfqq) +{ + struct bfq_io_cq *bic = bfqq->bic; + + /* + * If !bfqq->bic, the queue is already shared or its requests + * have already been redirected to a shared queue; both idle window + * and weight raising state have already been saved. Do nothing. + */ + if (!bic) + return; + + bic->saved_has_short_ttime = bfq_bfqq_has_short_ttime(bfqq); + bic->saved_IO_bound = bfq_bfqq_IO_bound(bfqq); + bic->saved_in_large_burst = bfq_bfqq_in_large_burst(bfqq); + bic->was_in_burst_list = !hlist_unhashed(&bfqq->burst_list_node); + if (unlikely(bfq_bfqq_just_created(bfqq) && + !bfq_bfqq_in_large_burst(bfqq) && + bfqq->bfqd->low_latency)) { + /* + * bfqq being merged ritgh after being created: bfqq + * would have deserved interactive weight raising, but + * did not make it to be set in a weight-raised state, + * because of this early merge. Store directly the + * weight-raising state that would have been assigned + * to bfqq, so that to avoid that bfqq unjustly fails + * to enjoy weight raising if split soon. + */ + bic->saved_wr_coeff = bfqq->bfqd->bfq_wr_coeff; + bic->saved_wr_cur_max_time = bfq_wr_duration(bfqq->bfqd); + bic->saved_last_wr_start_finish = jiffies; + } else { + bic->saved_wr_coeff = bfqq->wr_coeff; + bic->saved_wr_start_at_switch_to_srt = + bfqq->wr_start_at_switch_to_srt; + bic->saved_last_wr_start_finish = bfqq->last_wr_start_finish; + bic->saved_wr_cur_max_time = bfqq->wr_cur_max_time; + } + BUG_ON(time_is_after_jiffies(bfqq->last_wr_start_finish)); +} + +static void bfq_get_bic_reference(struct bfq_queue *bfqq) +{ + /* + * If bfqq->bic has a non-NULL value, the bic to which it belongs + * is about to begin using a shared bfq_queue. + */ + if (bfqq->bic) + atomic_long_inc(&bfqq->bic->icq.ioc->refcount); +} + +static void +bfq_merge_bfqqs(struct bfq_data *bfqd, struct bfq_io_cq *bic, + struct bfq_queue *bfqq, struct bfq_queue *new_bfqq) +{ + bfq_log_bfqq(bfqd, bfqq, "merging with queue %lu", + (unsigned long) new_bfqq->pid); + /* Save weight raising and idle window of the merged queues */ + bfq_bfqq_save_state(bfqq); + bfq_bfqq_save_state(new_bfqq); + if (bfq_bfqq_IO_bound(bfqq)) + bfq_mark_bfqq_IO_bound(new_bfqq); + bfq_clear_bfqq_IO_bound(bfqq); + + /* + * If bfqq is weight-raised, then let new_bfqq inherit + * weight-raising. To reduce false positives, neglect the case + * where bfqq has just been created, but has not yet made it + * to be weight-raised (which may happen because EQM may merge + * bfqq even before bfq_add_request is executed for the first + * time for bfqq). Handling this case would however be very + * easy, thanks to the flag just_created. + */ + if (new_bfqq->wr_coeff == 1 && bfqq->wr_coeff > 1) { + new_bfqq->wr_coeff = bfqq->wr_coeff; + new_bfqq->wr_cur_max_time = bfqq->wr_cur_max_time; + new_bfqq->last_wr_start_finish = bfqq->last_wr_start_finish; + new_bfqq->wr_start_at_switch_to_srt = + bfqq->wr_start_at_switch_to_srt; + if (bfq_bfqq_busy(new_bfqq)) { + bfqd->wr_busy_queues++; + BUG_ON(bfqd->wr_busy_queues > bfqd->busy_queues); + } + + new_bfqq->entity.prio_changed = 1; + bfq_log_bfqq(bfqd, new_bfqq, + "wr start after merge with %d, rais_max_time %u", + bfqq->pid, + jiffies_to_msecs(bfqq->wr_cur_max_time)); + } + + if (bfqq->wr_coeff > 1) { /* bfqq has given its wr to new_bfqq */ + bfqq->wr_coeff = 1; + bfqq->entity.prio_changed = 1; + if (bfq_bfqq_busy(bfqq)) { + bfqd->wr_busy_queues--; + BUG_ON(bfqd->wr_busy_queues < 0); + } + + } + + bfq_log_bfqq(bfqd, new_bfqq, "wr_busy %d", + bfqd->wr_busy_queues); + + /* + * Grab a reference to the bic, to prevent it from being destroyed + * before being possibly touched by a bfq_split_bfqq(). + */ + bfq_get_bic_reference(bfqq); + bfq_get_bic_reference(new_bfqq); + /* + * Merge queues (that is, let bic redirect its requests to new_bfqq) + */ + bic_set_bfqq(bic, new_bfqq, 1); + bfq_mark_bfqq_coop(new_bfqq); + /* + * new_bfqq now belongs to at least two bics (it is a shared queue): + * set new_bfqq->bic to NULL. bfqq either: + * - does not belong to any bic any more, and hence bfqq->bic must + * be set to NULL, or + * - is a queue whose owning bics have already been redirected to a + * different queue, hence the queue is destined to not belong to + * any bic soon and bfqq->bic is already NULL (therefore the next + * assignment causes no harm). + */ + new_bfqq->bic = NULL; + bfqq->bic = NULL; + /* release process reference to bfqq */ + bfq_put_queue(bfqq); +} + +static int bfq_allow_bio_merge(struct request_queue *q, struct request *rq, + struct bio *bio) +{ + struct bfq_data *bfqd = q->elevator->elevator_data; + bool is_sync = op_is_sync(bio->bi_opf); + struct bfq_io_cq *bic; + struct bfq_queue *bfqq, *new_bfqq; + + /* + * Disallow merge of a sync bio into an async request. + */ + if (is_sync && !rq_is_sync(rq)) + return false; + + /* + * Lookup the bfqq that this bio will be queued with. Allow + * merge only if rq is queued there. + * Queue lock is held here. + */ + bic = bfq_bic_lookup(bfqd, current->io_context); + if (!bic) + return false; + + bfqq = bic_to_bfqq(bic, is_sync); + /* + * We take advantage of this function to perform an early merge + * of the queues of possible cooperating processes. + */ + if (bfqq) { + new_bfqq = bfq_setup_cooperator(bfqd, bfqq, bio, false); + if (new_bfqq) { + bfq_merge_bfqqs(bfqd, bic, bfqq, new_bfqq); + /* + * If we get here, the bio will be queued in the + * shared queue, i.e., new_bfqq, so use new_bfqq + * to decide whether bio and rq can be merged. + */ + bfqq = new_bfqq; + } + } + + return bfqq == RQ_BFQQ(rq); +} + +static int bfq_allow_rq_merge(struct request_queue *q, struct request *rq, + struct request *next) +{ + return RQ_BFQQ(rq) == RQ_BFQQ(next); +} + +/* + * Set the maximum time for the in-service queue to consume its + * budget. This prevents seeky processes from lowering the throughput. + * In practice, a time-slice service scheme is used with seeky + * processes. + */ +static void bfq_set_budget_timeout(struct bfq_data *bfqd, + struct bfq_queue *bfqq) +{ + unsigned int timeout_coeff; + + if (bfqq->wr_cur_max_time == bfqd->bfq_wr_rt_max_time) + timeout_coeff = 1; + else + timeout_coeff = bfqq->entity.weight / bfqq->entity.orig_weight; + + bfqd->last_budget_start = ktime_get(); + + bfqq->budget_timeout = jiffies + + bfqd->bfq_timeout * timeout_coeff; + + bfq_log_bfqq(bfqd, bfqq, "%u", + jiffies_to_msecs(bfqd->bfq_timeout * timeout_coeff)); +} + +static void __bfq_set_in_service_queue(struct bfq_data *bfqd, + struct bfq_queue *bfqq) +{ + if (bfqq) { + bfqg_stats_update_avg_queue_size(bfqq_group(bfqq)); + bfq_mark_bfqq_must_alloc(bfqq); + bfq_clear_bfqq_fifo_expire(bfqq); + + bfqd->budgets_assigned = (bfqd->budgets_assigned*7 + 256) / 8; + + BUG_ON(bfqq == bfqd->in_service_queue); + BUG_ON(RB_EMPTY_ROOT(&bfqq->sort_list)); + + if (time_is_before_jiffies(bfqq->last_wr_start_finish) && + bfqq->wr_coeff > 1 && + bfqq->wr_cur_max_time == bfqd->bfq_wr_rt_max_time && + time_is_before_jiffies(bfqq->budget_timeout)) { + /* + * For soft real-time queues, move the start + * of the weight-raising period forward by the + * time the queue has not received any + * service. Otherwise, a relatively long + * service delay is likely to cause the + * weight-raising period of the queue to end, + * because of the short duration of the + * weight-raising period of a soft real-time + * queue. It is worth noting that this move + * is not so dangerous for the other queues, + * because soft real-time queues are not + * greedy. + * + * To not add a further variable, we use the + * overloaded field budget_timeout to + * determine for how long the queue has not + * received service, i.e., how much time has + * elapsed since the queue expired. However, + * this is a little imprecise, because + * budget_timeout is set to jiffies if bfqq + * not only expires, but also remains with no + * request. + */ + if (time_after(bfqq->budget_timeout, + bfqq->last_wr_start_finish)) + bfqq->last_wr_start_finish += + jiffies - bfqq->budget_timeout; + else + bfqq->last_wr_start_finish = jiffies; + + if (time_is_after_jiffies(bfqq->last_wr_start_finish)) { + pr_crit( + "BFQ WARNING:last %lu budget %lu jiffies %lu", + bfqq->last_wr_start_finish, + bfqq->budget_timeout, + jiffies); + pr_crit("diff %lu", jiffies - + max_t(unsigned long, + bfqq->last_wr_start_finish, + bfqq->budget_timeout)); + bfqq->last_wr_start_finish = jiffies; + } + } + + bfq_set_budget_timeout(bfqd, bfqq); + bfq_log_bfqq(bfqd, bfqq, + "cur-budget = %d", + bfqq->entity.budget); + } else + bfq_log(bfqd, "NULL"); + + bfqd->in_service_queue = bfqq; +} + +/* + * Get and set a new queue for service. + */ +static struct bfq_queue *bfq_set_in_service_queue(struct bfq_data *bfqd) +{ + struct bfq_queue *bfqq = bfq_get_next_queue(bfqd); + + __bfq_set_in_service_queue(bfqd, bfqq); + return bfqq; +} + +static void bfq_arm_slice_timer(struct bfq_data *bfqd) +{ + struct bfq_queue *bfqq = bfqd->in_service_queue; + struct bfq_io_cq *bic; + u32 sl; + + BUG_ON(!RB_EMPTY_ROOT(&bfqq->sort_list)); + + /* Processes have exited, don't wait. */ + bic = bfqd->in_service_bic; + if (!bic || atomic_read(&bic->icq.ioc->active_ref) == 0) + return; + + bfq_mark_bfqq_wait_request(bfqq); + + /* + * We don't want to idle for seeks, but we do want to allow + * fair distribution of slice time for a process doing back-to-back + * seeks. So allow a little bit of time for him to submit a new rq. + * + * To prevent processes with (partly) seeky workloads from + * being too ill-treated, grant them a small fraction of the + * assigned budget before reducing the waiting time to + * BFQ_MIN_TT. This happened to help reduce latency. + */ + sl = bfqd->bfq_slice_idle; + /* + * Unless the queue is being weight-raised or the scenario is + * asymmetric, grant only minimum idle time if the queue + * is seeky. A long idling is preserved for a weight-raised + * queue, or, more in general, in an asymemtric scenario, + * because a long idling is needed for guaranteeing to a queue + * its reserved share of the throughput (in particular, it is + * needed if the queue has a higher weight than some other + * queue). + */ + if (BFQQ_SEEKY(bfqq) && bfqq->wr_coeff == 1 && + bfq_symmetric_scenario(bfqd)) + sl = min_t(u32, sl, BFQ_MIN_TT); + + bfqd->last_idling_start = ktime_get(); + hrtimer_start(&bfqd->idle_slice_timer, ns_to_ktime(sl), + HRTIMER_MODE_REL); + bfqg_stats_set_start_idle_time(bfqq_group(bfqq)); + bfq_log(bfqd, "arm idle: %ld/%ld ms", + sl / NSEC_PER_MSEC, bfqd->bfq_slice_idle / NSEC_PER_MSEC); +} + +/* + * In autotuning mode, max_budget is dynamically recomputed as the + * amount of sectors transferred in timeout at the estimated peak + * rate. This enables BFQ to utilize a full timeslice with a full + * budget, even if the in-service queue is served at peak rate. And + * this maximises throughput with sequential workloads. + */ +static unsigned long bfq_calc_max_budget(struct bfq_data *bfqd) +{ + return (u64)bfqd->peak_rate * USEC_PER_MSEC * + jiffies_to_msecs(bfqd->bfq_timeout)>>BFQ_RATE_SHIFT; +} + +/* + * Update parameters related to throughput and responsiveness, as a + * function of the estimated peak rate. See comments on + * bfq_calc_max_budget(), and on the ref_wr_duration array. + */ +static void update_thr_responsiveness_params(struct bfq_data *bfqd) +{ + if (bfqd->bfq_user_max_budget == 0) { + bfqd->bfq_max_budget = + bfq_calc_max_budget(bfqd); + BUG_ON(bfqd->bfq_max_budget < 0); + bfq_log(bfqd, "new max_budget = %d", + bfqd->bfq_max_budget); + } +} + +static void bfq_reset_rate_computation(struct bfq_data *bfqd, struct request *rq) +{ + if (rq != NULL) { /* new rq dispatch now, reset accordingly */ + bfqd->last_dispatch = bfqd->first_dispatch = ktime_get_ns() ; + bfqd->peak_rate_samples = 1; + bfqd->sequential_samples = 0; + bfqd->tot_sectors_dispatched = bfqd->last_rq_max_size = + blk_rq_sectors(rq); + } else /* no new rq dispatched, just reset the number of samples */ + bfqd->peak_rate_samples = 0; /* full re-init on next disp. */ + + bfq_log(bfqd, + "at end, sample %u/%u tot_sects %llu", + bfqd->peak_rate_samples, bfqd->sequential_samples, + bfqd->tot_sectors_dispatched); +} + +static void bfq_update_rate_reset(struct bfq_data *bfqd, struct request *rq) +{ + u32 rate, weight, divisor; + + /* + * For the convergence property to hold (see comments on + * bfq_update_peak_rate()) and for the assessment to be + * reliable, a minimum number of samples must be present, and + * a minimum amount of time must have elapsed. If not so, do + * not compute new rate. Just reset parameters, to get ready + * for a new evaluation attempt. + */ + if (bfqd->peak_rate_samples < BFQ_RATE_MIN_SAMPLES || + bfqd->delta_from_first < BFQ_RATE_MIN_INTERVAL) { + bfq_log(bfqd, + "only resetting, delta_first %lluus samples %d", + bfqd->delta_from_first>>10, bfqd->peak_rate_samples); + goto reset_computation; + } + + /* + * If a new request completion has occurred after last + * dispatch, then, to approximate the rate at which requests + * have been served by the device, it is more precise to + * extend the observation interval to the last completion. + */ + bfqd->delta_from_first = + max_t(u64, bfqd->delta_from_first, + bfqd->last_completion - bfqd->first_dispatch); + + BUG_ON(bfqd->delta_from_first == 0); + /* + * Rate computed in sects/usec, and not sects/nsec, for + * precision issues. + */ + rate = div64_ul(bfqd->tot_sectors_dispatched<delta_from_first, NSEC_PER_USEC)); + + bfq_log(bfqd, +"tot_sects %llu delta_first %lluus rate %llu sects/s (%d)", + bfqd->tot_sectors_dispatched, bfqd->delta_from_first>>10, + ((USEC_PER_SEC*(u64)rate)>>BFQ_RATE_SHIFT), + rate > 20< 20M sectors/sec) + */ + if ((bfqd->sequential_samples < (3 * bfqd->peak_rate_samples)>>2 && + rate <= bfqd->peak_rate) || + rate > 20<peak_rate_samples, bfqd->sequential_samples, + ((USEC_PER_SEC*(u64)rate)>>BFQ_RATE_SHIFT), + ((USEC_PER_SEC*(u64)bfqd->peak_rate)>>BFQ_RATE_SHIFT)); + goto reset_computation; + } else { + bfq_log(bfqd, + "do update, samples %u/%u rate/peak %llu/%llu", + bfqd->peak_rate_samples, bfqd->sequential_samples, + ((USEC_PER_SEC*(u64)rate)>>BFQ_RATE_SHIFT), + ((USEC_PER_SEC*(u64)bfqd->peak_rate)>>BFQ_RATE_SHIFT)); + } + + /* + * We have to update the peak rate, at last! To this purpose, + * we use a low-pass filter. We compute the smoothing constant + * of the filter as a function of the 'weight' of the new + * measured rate. + * + * As can be seen in next formulas, we define this weight as a + * quantity proportional to how sequential the workload is, + * and to how long the observation time interval is. + * + * The weight runs from 0 to 8. The maximum value of the + * weight, 8, yields the minimum value for the smoothing + * constant. At this minimum value for the smoothing constant, + * the measured rate contributes for half of the next value of + * the estimated peak rate. + * + * So, the first step is to compute the weight as a function + * of how sequential the workload is. Note that the weight + * cannot reach 9, because bfqd->sequential_samples cannot + * become equal to bfqd->peak_rate_samples, which, in its + * turn, holds true because bfqd->sequential_samples is not + * incremented for the first sample. + */ + weight = (9 * bfqd->sequential_samples) / bfqd->peak_rate_samples; + + /* + * Second step: further refine the weight as a function of the + * duration of the observation interval. + */ + weight = min_t(u32, 8, + div_u64(weight * bfqd->delta_from_first, + BFQ_RATE_REF_INTERVAL)); + + /* + * Divisor ranging from 10, for minimum weight, to 2, for + * maximum weight. + */ + divisor = 10 - weight; + BUG_ON(divisor == 0); + + /* + * Finally, update peak rate: + * + * peak_rate = peak_rate * (divisor-1) / divisor + rate / divisor + */ + bfqd->peak_rate *= divisor-1; + bfqd->peak_rate /= divisor; + rate /= divisor; /* smoothing constant alpha = 1/divisor */ + + bfq_log(bfqd, + "divisor %d tmp_peak_rate %llu tmp_rate %u", + divisor, + ((USEC_PER_SEC*(u64)bfqd->peak_rate)>>BFQ_RATE_SHIFT), + (u32)((USEC_PER_SEC*(u64)rate)>>BFQ_RATE_SHIFT)); + + BUG_ON(bfqd->peak_rate == 0); + BUG_ON(bfqd->peak_rate > 20<peak_rate += rate; + + /* + * For a very slow device, bfqd->peak_rate can reach 0 (see + * the minimum representable values reported in the comments + * on BFQ_RATE_SHIFT). Push to 1 if this happens, to avoid + * divisions by zero where bfqd->peak_rate is used as a + * divisor. + */ + bfqd->peak_rate = max_t(u32, 1, bfqd->peak_rate); + + update_thr_responsiveness_params(bfqd); + BUG_ON(bfqd->peak_rate > 20<peak_rate_samples == 0) { /* first dispatch */ + bfq_log(bfqd, + "goto reset, samples %d", + bfqd->peak_rate_samples) ; + bfq_reset_rate_computation(bfqd, rq); + goto update_last_values; /* will add one sample */ + } + + /* + * Device idle for very long: the observation interval lasting + * up to this dispatch cannot be a valid observation interval + * for computing a new peak rate (similarly to the late- + * completion event in bfq_completed_request()). Go to + * update_rate_and_reset to have the following three steps + * taken: + * - close the observation interval at the last (previous) + * request dispatch or completion + * - compute rate, if possible, for that observation interval + * - start a new observation interval with this dispatch + */ + if (now_ns - bfqd->last_dispatch > 100*NSEC_PER_MSEC && + bfqd->rq_in_driver == 0) { + bfq_log(bfqd, +"jumping to updating&resetting delta_last %lluus samples %d", + (now_ns - bfqd->last_dispatch)>>10, + bfqd->peak_rate_samples) ; + goto update_rate_and_reset; + } + + /* Update sampling information */ + bfqd->peak_rate_samples++; + + if ((bfqd->rq_in_driver > 0 || + now_ns - bfqd->last_completion < BFQ_MIN_TT) + && get_sdist(bfqd->last_position, rq) < BFQQ_SEEK_THR) + bfqd->sequential_samples++; + + bfqd->tot_sectors_dispatched += blk_rq_sectors(rq); + + /* Reset max observed rq size every 32 dispatches */ + if (likely(bfqd->peak_rate_samples % 32)) + bfqd->last_rq_max_size = + max_t(u32, blk_rq_sectors(rq), bfqd->last_rq_max_size); + else + bfqd->last_rq_max_size = blk_rq_sectors(rq); + + bfqd->delta_from_first = now_ns - bfqd->first_dispatch; + + bfq_log(bfqd, + "added samples %u/%u tot_sects %llu delta_first %lluus", + bfqd->peak_rate_samples, bfqd->sequential_samples, + bfqd->tot_sectors_dispatched, + bfqd->delta_from_first>>10); + + /* Target observation interval not yet reached, go on sampling */ + if (bfqd->delta_from_first < BFQ_RATE_REF_INTERVAL) + goto update_last_values; + +update_rate_and_reset: + bfq_update_rate_reset(bfqd, rq); +update_last_values: + bfqd->last_position = blk_rq_pos(rq) + blk_rq_sectors(rq); + bfqd->last_dispatch = now_ns; + + bfq_log(bfqd, + "delta_first %lluus last_pos %llu peak_rate %llu", + (now_ns - bfqd->first_dispatch)>>10, + (unsigned long long) bfqd->last_position, + ((USEC_PER_SEC*(u64)bfqd->peak_rate)>>BFQ_RATE_SHIFT)); + bfq_log(bfqd, + "samples at end %d", bfqd->peak_rate_samples); +} + +/* + * Move request from internal lists to the dispatch list of the request queue + */ +static void bfq_dispatch_insert(struct request_queue *q, struct request *rq) +{ + struct bfq_queue *bfqq = RQ_BFQQ(rq); + + /* + * For consistency, the next instruction should have been executed + * after removing the request from the queue and dispatching it. + * We execute instead this instruction before bfq_remove_request() + * (and hence introduce a temporary inconsistency), for efficiency. + * In fact, in a forced_dispatch, this prevents two counters related + * to bfqq->dispatched to risk to be uselessly decremented if bfqq + * is not in service, and then to be incremented again after + * incrementing bfqq->dispatched. + */ + bfqq->dispatched++; + bfq_update_peak_rate(q->elevator->elevator_data, rq); + + bfq_remove_request(rq); + elv_dispatch_sort(q, rq); +} + +static void __bfq_bfqq_expire(struct bfq_data *bfqd, struct bfq_queue *bfqq) +{ + BUG_ON(bfqq != bfqd->in_service_queue); + + /* + * If this bfqq is shared between multiple processes, check + * to make sure that those processes are still issuing I/Os + * within the mean seek distance. If not, it may be time to + * break the queues apart again. + */ + if (bfq_bfqq_coop(bfqq) && BFQQ_SEEKY(bfqq)) + bfq_mark_bfqq_split_coop(bfqq); + + if (RB_EMPTY_ROOT(&bfqq->sort_list)) { + if (bfqq->dispatched == 0) + /* + * Overloading budget_timeout field to store + * the time at which the queue remains with no + * backlog and no outstanding request; used by + * the weight-raising mechanism. + */ + bfqq->budget_timeout = jiffies; + + bfq_del_bfqq_busy(bfqd, bfqq, true); + } else { + bfq_requeue_bfqq(bfqd, bfqq, true); + /* + * Resort priority tree of potential close cooperators. + */ + bfq_pos_tree_add_move(bfqd, bfqq); + } + + /* + * All in-service entities must have been properly deactivated + * or requeued before executing the next function, which + * resets all in-service entites as no more in service. + */ + __bfq_bfqd_reset_in_service(bfqd); +} + +/** + * __bfq_bfqq_recalc_budget - try to adapt the budget to the @bfqq behavior. + * @bfqd: device data. + * @bfqq: queue to update. + * @reason: reason for expiration. + * + * Handle the feedback on @bfqq budget at queue expiration. + * See the body for detailed comments. + */ +static void __bfq_bfqq_recalc_budget(struct bfq_data *bfqd, + struct bfq_queue *bfqq, + enum bfqq_expiration reason) +{ + struct request *next_rq; + int budget, min_budget; + + BUG_ON(bfqq != bfqd->in_service_queue); + + min_budget = bfq_min_budget(bfqd); + + if (bfqq->wr_coeff == 1) + budget = bfqq->max_budget; + else /* + * Use a constant, low budget for weight-raised queues, + * to help achieve a low latency. Keep it slightly higher + * than the minimum possible budget, to cause a little + * bit fewer expirations. + */ + budget = 2 * min_budget; + + bfq_log_bfqq(bfqd, bfqq, "last budg %d, budg left %d", + bfqq->entity.budget, bfq_bfqq_budget_left(bfqq)); + bfq_log_bfqq(bfqd, bfqq, "last max_budg %d, min budg %d", + budget, bfq_min_budget(bfqd)); + bfq_log_bfqq(bfqd, bfqq, "sync %d, seeky %d", + bfq_bfqq_sync(bfqq), BFQQ_SEEKY(bfqd->in_service_queue)); + + if (bfq_bfqq_sync(bfqq) && bfqq->wr_coeff == 1) { + switch (reason) { + /* + * Caveat: in all the following cases we trade latency + * for throughput. + */ + case BFQ_BFQQ_TOO_IDLE: + /* + * This is the only case where we may reduce + * the budget: if there is no request of the + * process still waiting for completion, then + * we assume (tentatively) that the timer has + * expired because the batch of requests of + * the process could have been served with a + * smaller budget. Hence, betting that + * process will behave in the same way when it + * becomes backlogged again, we reduce its + * next budget. As long as we guess right, + * this budget cut reduces the latency + * experienced by the process. + * + * However, if there are still outstanding + * requests, then the process may have not yet + * issued its next request just because it is + * still waiting for the completion of some of + * the still outstanding ones. So in this + * subcase we do not reduce its budget, on the + * contrary we increase it to possibly boost + * the throughput, as discussed in the + * comments to the BUDGET_TIMEOUT case. + */ + if (bfqq->dispatched > 0) /* still outstanding reqs */ + budget = min(budget * 2, bfqd->bfq_max_budget); + else { + if (budget > 5 * min_budget) + budget -= 4 * min_budget; + else + budget = min_budget; + } + break; + case BFQ_BFQQ_BUDGET_TIMEOUT: + /* + * We double the budget here because it gives + * the chance to boost the throughput if this + * is not a seeky process (and has bumped into + * this timeout because of, e.g., ZBR). + */ + budget = min(budget * 2, bfqd->bfq_max_budget); + break; + case BFQ_BFQQ_BUDGET_EXHAUSTED: + /* + * The process still has backlog, and did not + * let either the budget timeout or the disk + * idling timeout expire. Hence it is not + * seeky, has a short thinktime and may be + * happy with a higher budget too. So + * definitely increase the budget of this good + * candidate to boost the disk throughput. + */ + budget = min(budget * 4, bfqd->bfq_max_budget); + break; + case BFQ_BFQQ_NO_MORE_REQUESTS: + /* + * For queues that expire for this reason, it + * is particularly important to keep the + * budget close to the actual service they + * need. Doing so reduces the timestamp + * misalignment problem described in the + * comments in the body of + * __bfq_activate_entity. In fact, suppose + * that a queue systematically expires for + * BFQ_BFQQ_NO_MORE_REQUESTS and presents a + * new request in time to enjoy timestamp + * back-shifting. The larger the budget of the + * queue is with respect to the service the + * queue actually requests in each service + * slot, the more times the queue can be + * reactivated with the same virtual finish + * time. It follows that, even if this finish + * time is pushed to the system virtual time + * to reduce the consequent timestamp + * misalignment, the queue unjustly enjoys for + * many re-activations a lower finish time + * than all newly activated queues. + * + * The service needed by bfqq is measured + * quite precisely by bfqq->entity.service. + * Since bfqq does not enjoy device idling, + * bfqq->entity.service is equal to the number + * of sectors that the process associated with + * bfqq requested to read/write before waiting + * for request completions, or blocking for + * other reasons. + */ + budget = max_t(int, bfqq->entity.service, min_budget); + break; + default: + return; + } + } else if (!bfq_bfqq_sync(bfqq)) + /* + * Async queues get always the maximum possible + * budget, as for them we do not care about latency + * (in addition, their ability to dispatch is limited + * by the charging factor). + */ + budget = bfqd->bfq_max_budget; + + bfqq->max_budget = budget; + + if (bfqd->budgets_assigned >= bfq_stats_min_budgets && + !bfqd->bfq_user_max_budget) + bfqq->max_budget = min(bfqq->max_budget, bfqd->bfq_max_budget); + + /* + * If there is still backlog, then assign a new budget, making + * sure that it is large enough for the next request. Since + * the finish time of bfqq must be kept in sync with the + * budget, be sure to call __bfq_bfqq_expire() *after* this + * update. + * + * If there is no backlog, then no need to update the budget; + * it will be updated on the arrival of a new request. + */ + next_rq = bfqq->next_rq; + if (next_rq) { + BUG_ON(reason == BFQ_BFQQ_TOO_IDLE || + reason == BFQ_BFQQ_NO_MORE_REQUESTS); + bfqq->entity.budget = max_t(unsigned long, bfqq->max_budget, + bfq_serv_to_charge(next_rq, bfqq)); + BUG_ON(!bfq_bfqq_busy(bfqq)); + BUG_ON(RB_EMPTY_ROOT(&bfqq->sort_list)); + } + + bfq_log_bfqq(bfqd, bfqq, "head sect: %u, new budget %d", + next_rq ? blk_rq_sectors(next_rq) : 0, + bfqq->entity.budget); +} + +/* + * Return true if the process associated with bfqq is "slow". The slow + * flag is used, in addition to the budget timeout, to reduce the + * amount of service provided to seeky processes, and thus reduce + * their chances to lower the throughput. More details in the comments + * on the function bfq_bfqq_expire(). + * + * An important observation is in order: as discussed in the comments + * on the function bfq_update_peak_rate(), with devices with internal + * queues, it is hard if ever possible to know when and for how long + * an I/O request is processed by the device (apart from the trivial + * I/O pattern where a new request is dispatched only after the + * previous one has been completed). This makes it hard to evaluate + * the real rate at which the I/O requests of each bfq_queue are + * served. In fact, for an I/O scheduler like BFQ, serving a + * bfq_queue means just dispatching its requests during its service + * slot (i.e., until the budget of the queue is exhausted, or the + * queue remains idle, or, finally, a timeout fires). But, during the + * service slot of a bfq_queue, around 100 ms at most, the device may + * be even still processing requests of bfq_queues served in previous + * service slots. On the opposite end, the requests of the in-service + * bfq_queue may be completed after the service slot of the queue + * finishes. + * + * Anyway, unless more sophisticated solutions are used + * (where possible), the sum of the sizes of the requests dispatched + * during the service slot of a bfq_queue is probably the only + * approximation available for the service received by the bfq_queue + * during its service slot. And this sum is the quantity used in this + * function to evaluate the I/O speed of a process. + */ +static bool bfq_bfqq_is_slow(struct bfq_data *bfqd, struct bfq_queue *bfqq, + bool compensate, enum bfqq_expiration reason, + unsigned long *delta_ms) +{ + ktime_t delta_ktime; + u32 delta_usecs; + bool slow = BFQQ_SEEKY(bfqq); /* if delta too short, use seekyness */ + + if (!bfq_bfqq_sync(bfqq)) + return false; + + if (compensate) + delta_ktime = bfqd->last_idling_start; + else + delta_ktime = ktime_get(); + delta_ktime = ktime_sub(delta_ktime, bfqd->last_budget_start); + delta_usecs = ktime_to_us(delta_ktime); + + /* don't use too short time intervals */ + if (delta_usecs < 1000) { + if (blk_queue_nonrot(bfqd->queue)) + /* + * give same worst-case guarantees as idling + * for seeky + */ + *delta_ms = BFQ_MIN_TT / NSEC_PER_MSEC; + else /* charge at least one seek */ + *delta_ms = bfq_slice_idle / NSEC_PER_MSEC; + + bfq_log(bfqd, "too short %u", delta_usecs); + + return slow; + } + + *delta_ms = delta_usecs / USEC_PER_MSEC; + + /* + * Use only long (> 20ms) intervals to filter out excessive + * spikes in service rate estimation. + */ + if (delta_usecs > 20000) { + /* + * Caveat for rotational devices: processes doing I/O + * in the slower disk zones tend to be slow(er) even + * if not seeky. In this respect, the estimated peak + * rate is likely to be an average over the disk + * surface. Accordingly, to not be too harsh with + * unlucky processes, a process is deemed slow only if + * its rate has been lower than half of the estimated + * peak rate. + */ + slow = bfqq->entity.service < bfqd->bfq_max_budget / 2; + bfq_log(bfqd, "relative rate %d/%d", + bfqq->entity.service, bfqd->bfq_max_budget); + } + + bfq_log_bfqq(bfqd, bfqq, "slow %d", slow); + + return slow; +} + +/* + * To be deemed as soft real-time, an application must meet two + * requirements. First, the application must not require an average + * bandwidth higher than the approximate bandwidth required to playback or + * record a compressed high-definition video. + * The next function is invoked on the completion of the last request of a + * batch, to compute the next-start time instant, soft_rt_next_start, such + * that, if the next request of the application does not arrive before + * soft_rt_next_start, then the above requirement on the bandwidth is met. + * + * The second requirement is that the request pattern of the application is + * isochronous, i.e., that, after issuing a request or a batch of requests, + * the application stops issuing new requests until all its pending requests + * have been completed. After that, the application may issue a new batch, + * and so on. + * For this reason the next function is invoked to compute + * soft_rt_next_start only for applications that meet this requirement, + * whereas soft_rt_next_start is set to infinity for applications that do + * not. + * + * Unfortunately, even a greedy (i.e., I/O-bound) application may + * happen to meet, occasionally or systematically, both the above + * bandwidth and isochrony requirements. This may happen at least in + * the following circumstances. First, if the CPU load is high. The + * application may stop issuing requests while the CPUs are busy + * serving other processes, then restart, then stop again for a while, + * and so on. The other circumstances are related to the storage + * device: the storage device is highly loaded or reaches a low-enough + * throughput with the I/O of the application (e.g., because the I/O + * is random and/or the device is slow). In all these cases, the + * I/O of the application may be simply slowed down enough to meet + * the bandwidth and isochrony requirements. To reduce the probability + * that greedy applications are deemed as soft real-time in these + * corner cases, a further rule is used in the computation of + * soft_rt_next_start: the return value of this function is forced to + * be higher than the maximum between the following two quantities. + * + * (a) Current time plus: (1) the maximum time for which the arrival + * of a request is waited for when a sync queue becomes idle, + * namely bfqd->bfq_slice_idle, and (2) a few extra jiffies. We + * postpone for a moment the reason for adding a few extra + * jiffies; we get back to it after next item (b). Lower-bounding + * the return value of this function with the current time plus + * bfqd->bfq_slice_idle tends to filter out greedy applications, + * because the latter issue their next request as soon as possible + * after the last one has been completed. In contrast, a soft + * real-time application spends some time processing data, after a + * batch of its requests has been completed. + * + * (b) Current value of bfqq->soft_rt_next_start. As pointed out + * above, greedy applications may happen to meet both the + * bandwidth and isochrony requirements under heavy CPU or + * storage-device load. In more detail, in these scenarios, these + * applications happen, only for limited time periods, to do I/O + * slowly enough to meet all the requirements described so far, + * including the filtering in above item (a). These slow-speed + * time intervals are usually interspersed between other time + * intervals during which these applications do I/O at a very high + * speed. Fortunately, exactly because of the high speed of the + * I/O in the high-speed intervals, the values returned by this + * function happen to be so high, near the end of any such + * high-speed interval, to be likely to fall *after* the end of + * the low-speed time interval that follows. These high values are + * stored in bfqq->soft_rt_next_start after each invocation of + * this function. As a consequence, if the last value of + * bfqq->soft_rt_next_start is constantly used to lower-bound the + * next value that this function may return, then, from the very + * beginning of a low-speed interval, bfqq->soft_rt_next_start is + * likely to be constantly kept so high that any I/O request + * issued during the low-speed interval is considered as arriving + * to soon for the application to be deemed as soft + * real-time. Then, in the high-speed interval that follows, the + * application will not be deemed as soft real-time, just because + * it will do I/O at a high speed. And so on. + * + * Getting back to the filtering in item (a), in the following two + * cases this filtering might be easily passed by a greedy + * application, if the reference quantity was just + * bfqd->bfq_slice_idle: + * 1) HZ is so low that the duration of a jiffy is comparable to or + * higher than bfqd->bfq_slice_idle. This happens, e.g., on slow + * devices with HZ=100. The time granularity may be so coarse + * that the approximation, in jiffies, of bfqd->bfq_slice_idle + * is rather lower than the exact value. + * 2) jiffies, instead of increasing at a constant rate, may stop increasing + * for a while, then suddenly 'jump' by several units to recover the lost + * increments. This seems to happen, e.g., inside virtual machines. + * To address this issue, in the filtering in (a) we do not use as a + * reference time interval just bfqd->bfq_slice_idle, but + * bfqd->bfq_slice_idle plus a few jiffies. In particular, we add the + * minimum number of jiffies for which the filter seems to be quite + * precise also in embedded systems and KVM/QEMU virtual machines. + */ +static unsigned long bfq_bfqq_softrt_next_start(struct bfq_data *bfqd, + struct bfq_queue *bfqq) +{ + bfq_log_bfqq(bfqd, bfqq, +"service_blkg %lu soft_rate %u sects/sec interval %u", + bfqq->service_from_backlogged, + bfqd->bfq_wr_max_softrt_rate, + jiffies_to_msecs(HZ * bfqq->service_from_backlogged / + bfqd->bfq_wr_max_softrt_rate)); + + return max3(bfqq->soft_rt_next_start, + bfqq->last_idle_bklogged + + HZ * bfqq->service_from_backlogged / + bfqd->bfq_wr_max_softrt_rate, + jiffies + nsecs_to_jiffies(bfqq->bfqd->bfq_slice_idle) + 4); +} + +static bool bfq_bfqq_injectable(struct bfq_queue *bfqq) +{ + return BFQQ_SEEKY(bfqq) && bfqq->wr_coeff == 1 && + blk_queue_nonrot(bfqq->bfqd->queue) && + bfqq->bfqd->hw_tag; +} + +/** + * bfq_bfqq_expire - expire a queue. + * @bfqd: device owning the queue. + * @bfqq: the queue to expire. + * @compensate: if true, compensate for the time spent idling. + * @reason: the reason causing the expiration. + * + * If the process associated with bfqq does slow I/O (e.g., because it + * issues random requests), we charge bfqq with the time it has been + * in service instead of the service it has received (see + * bfq_bfqq_charge_time for details on how this goal is achieved). As + * a consequence, bfqq will typically get higher timestamps upon + * reactivation, and hence it will be rescheduled as if it had + * received more service than what it has actually received. In the + * end, bfqq receives less service in proportion to how slowly its + * associated process consumes its budgets (and hence how seriously it + * tends to lower the throughput). In addition, this time-charging + * strategy guarantees time fairness among slow processes. In + * contrast, if the process associated with bfqq is not slow, we + * charge bfqq exactly with the service it has received. + * + * Charging time to the first type of queues and the exact service to + * the other has the effect of using the WF2Q+ policy to schedule the + * former on a timeslice basis, without violating service domain + * guarantees among the latter. + */ +static void bfq_bfqq_expire(struct bfq_data *bfqd, + struct bfq_queue *bfqq, + bool compensate, + enum bfqq_expiration reason) +{ + bool slow; + unsigned long delta = 0; + struct bfq_entity *entity = &bfqq->entity; + int ref; + + BUG_ON(bfqq != bfqd->in_service_queue); + + /* + * Check whether the process is slow (see bfq_bfqq_is_slow). + */ + slow = bfq_bfqq_is_slow(bfqd, bfqq, compensate, reason, &delta); + + /* + * As above explained, charge slow (typically seeky) and + * timed-out queues with the time and not the service + * received, to favor sequential workloads. + * + * Processes doing I/O in the slower disk zones will tend to + * be slow(er) even if not seeky. Therefore, since the + * estimated peak rate is actually an average over the disk + * surface, these processes may timeout just for bad luck. To + * avoid punishing them, do not charge time to processes that + * succeeded in consuming at least 2/3 of their budget. This + * allows BFQ to preserve enough elasticity to still perform + * bandwidth, and not time, distribution with little unlucky + * or quasi-sequential processes. + */ + if (bfqq->wr_coeff == 1 && + (slow || + (reason == BFQ_BFQQ_BUDGET_TIMEOUT && + bfq_bfqq_budget_left(bfqq) >= entity->budget / 3))) + bfq_bfqq_charge_time(bfqd, bfqq, delta); + + BUG_ON(bfqq->entity.budget < bfqq->entity.service); + + if (reason == BFQ_BFQQ_TOO_IDLE && + entity->service <= 2 * entity->budget / 10) + bfq_clear_bfqq_IO_bound(bfqq); + + if (bfqd->low_latency && bfqq->wr_coeff == 1) + bfqq->last_wr_start_finish = jiffies; + + if (bfqd->low_latency && bfqd->bfq_wr_max_softrt_rate > 0 && + RB_EMPTY_ROOT(&bfqq->sort_list)) { + /* + * If we get here, and there are no outstanding + * requests, then the request pattern is isochronous + * (see the comments on the function + * bfq_bfqq_softrt_next_start()). Thus we can compute + * soft_rt_next_start. If, instead, the queue still + * has outstanding requests, then we have to wait for + * the completion of all the outstanding requests to + * discover whether the request pattern is actually + * isochronous. + */ + BUG_ON(bfqd->busy_queues < 1); + if (bfqq->dispatched == 0) { + bfqq->soft_rt_next_start = + bfq_bfqq_softrt_next_start(bfqd, bfqq); + bfq_log_bfqq(bfqd, bfqq, "new soft_rt_next %lu", + bfqq->soft_rt_next_start); + } else { + /* + * Schedule an update of soft_rt_next_start to when + * the task may be discovered to be isochronous. + */ + bfq_mark_bfqq_softrt_update(bfqq); + } + } + + bfq_log_bfqq(bfqd, bfqq, + "expire (%s, slow %d, num_disp %d, short %d, weight %d, serv %d/%d)", + reason_name[reason], slow, bfqq->dispatched, + bfq_bfqq_has_short_ttime(bfqq), entity->weight, + entity->service, entity->budget); + + /* + * Increase, decrease or leave budget unchanged according to + * reason. + */ + BUG_ON(bfqq->entity.budget < bfqq->entity.service); + __bfq_bfqq_recalc_budget(bfqd, bfqq, reason); + BUG_ON(bfqq->next_rq == NULL && + bfqq->entity.budget < bfqq->entity.service); + ref = bfqq->ref; + __bfq_bfqq_expire(bfqd, bfqq); + + if (ref == 1) /* bfqq is gone, no more actions on it */ + return; + + BUG_ON(ref > 1 && + !bfq_bfqq_busy(bfqq) && reason == BFQ_BFQQ_BUDGET_EXHAUSTED && + !bfq_class_idle(bfqq)); + + bfqq->injected_service = 0; + + /* mark bfqq as waiting a request only if a bic still points to it */ + if (!bfq_bfqq_busy(bfqq) && + reason != BFQ_BFQQ_BUDGET_TIMEOUT && + reason != BFQ_BFQQ_BUDGET_EXHAUSTED) { + BUG_ON(!RB_EMPTY_ROOT(&bfqq->sort_list)); + BUG_ON(bfqq->next_rq); + bfq_mark_bfqq_non_blocking_wait_rq(bfqq); + /* + * Not setting service to 0, because, if the next rq + * arrives in time, the queue will go on receiving + * service with this same budget (as if it never expired) + */ + } else { + entity->service = 0; + bfq_log_bfqq(bfqd, bfqq, "[%s] resetting service", __func__); + } + + /* + * Reset the received-service counter for every parent entity. + * Differently from what happens with bfqq->entity.service, + * the resetting of this counter never needs to be postponed + * for parent entities. In fact, in case bfqq may have a + * chance to go on being served using the last, partially + * consumed budget, bfqq->entity.service needs to be kept, + * because if bfqq then actually goes on being served using + * the same budget, the last value of bfqq->entity.service is + * needed to properly decrement bfqq->entity.budget by the + * portion already consumed. In contrast, it is not necessary + * to keep entity->service for parent entities too, because + * the bubble up of the new value of bfqq->entity.budget will + * make sure that the budgets of parent entities are correct, + * even in case bfqq and thus parent entities go on receiving + * service with the same budget. + */ + entity = entity->parent; + for_each_entity(entity) + entity->service = 0; +} + +/* + * Budget timeout is not implemented through a dedicated timer, but + * just checked on request arrivals and completions, as well as on + * idle timer expirations. + */ +static bool bfq_bfqq_budget_timeout(struct bfq_queue *bfqq) +{ + return time_is_before_eq_jiffies(bfqq->budget_timeout); +} + +/* + * If we expire a queue that is actively waiting (i.e., with the + * device idled) for the arrival of a new request, then we may incur + * the timestamp misalignment problem described in the body of the + * function __bfq_activate_entity. Hence we return true only if this + * condition does not hold, or if the queue is slow enough to deserve + * only to be kicked off for preserving a high throughput. + */ +static bool bfq_may_expire_for_budg_timeout(struct bfq_queue *bfqq) +{ + bfq_log_bfqq(bfqq->bfqd, bfqq, + "wait_request %d left %d timeout %d", + bfq_bfqq_wait_request(bfqq), + bfq_bfqq_budget_left(bfqq) >= bfqq->entity.budget / 3, + bfq_bfqq_budget_timeout(bfqq)); + + return (!bfq_bfqq_wait_request(bfqq) || + bfq_bfqq_budget_left(bfqq) >= bfqq->entity.budget / 3) + && + bfq_bfqq_budget_timeout(bfqq); +} + +/* + * For a queue that becomes empty, device idling is allowed only if + * this function returns true for that queue. As a consequence, since + * device idling plays a critical role for both throughput boosting + * and service guarantees, the return value of this function plays a + * critical role as well. + * + * In a nutshell, this function returns true only if idling is + * beneficial for throughput or, even if detrimental for throughput, + * idling is however necessary to preserve service guarantees (low + * latency, desired throughput distribution, ...). In particular, on + * NCQ-capable devices, this function tries to return false, so as to + * help keep the drives' internal queues full, whenever this helps the + * device boost the throughput without causing any service-guarantee + * issue. + * + * In more detail, the return value of this function is obtained by, + * first, computing a number of boolean variables that take into + * account throughput and service-guarantee issues, and, then, + * combining these variables in a logical expression. Most of the + * issues taken into account are not trivial. We discuss these issues + * while introducing the variables. + */ +static bool bfq_better_to_idle(struct bfq_queue *bfqq) +{ + struct bfq_data *bfqd = bfqq->bfqd; + bool rot_without_queueing = + !blk_queue_nonrot(bfqd->queue) && !bfqd->hw_tag, + bfqq_sequential_and_IO_bound, + idling_boosts_thr, idling_boosts_thr_without_issues, + idling_needed_for_service_guarantees, + asymmetric_scenario; + + if (bfqd->strict_guarantees) + return true; + + /* + * Idling is performed only if slice_idle > 0. In addition, we + * do not idle if + * (a) bfqq is async + * (b) bfqq is in the idle io prio class: in this case we do + * not idle because we want to minimize the bandwidth that + * queues in this class can steal to higher-priority queues + */ + if (bfqd->bfq_slice_idle == 0 || !bfq_bfqq_sync(bfqq) || + bfq_class_idle(bfqq)) + return false; + + bfqq_sequential_and_IO_bound = !BFQQ_SEEKY(bfqq) && + bfq_bfqq_IO_bound(bfqq) && bfq_bfqq_has_short_ttime(bfqq); + /* + * The next variable takes into account the cases where idling + * boosts the throughput. + * + * The value of the variable is computed considering, first, that + * idling is virtually always beneficial for the throughput if: + * (a) the device is not NCQ-capable and rotational, or + * (b) regardless of the presence of NCQ, the device is rotational and + * the request pattern for bfqq is I/O-bound and sequential, or + * (c) regardless of whether it is rotational, the device is + * not NCQ-capable and the request pattern for bfqq is + * I/O-bound and sequential. + * + * Secondly, and in contrast to the above item (b), idling an + * NCQ-capable flash-based device would not boost the + * throughput even with sequential I/O; rather it would lower + * the throughput in proportion to how fast the device + * is. Accordingly, the next variable is true if any of the + * above conditions (a), (b) or (c) is true, and, in + * particular, happens to be false if bfqd is an NCQ-capable + * flash-based device. + */ + idling_boosts_thr = rot_without_queueing || + ((!blk_queue_nonrot(bfqd->queue) || !bfqd->hw_tag) && + bfqq_sequential_and_IO_bound); + + /* + * The value of the next variable, + * idling_boosts_thr_without_issues, is equal to that of + * idling_boosts_thr, unless a special case holds. In this + * special case, described below, idling may cause problems to + * weight-raised queues. + * + * When the request pool is saturated (e.g., in the presence + * of write hogs), if the processes associated with + * non-weight-raised queues ask for requests at a lower rate, + * then processes associated with weight-raised queues have a + * higher probability to get a request from the pool + * immediately (or at least soon) when they need one. Thus + * they have a higher probability to actually get a fraction + * of the device throughput proportional to their high + * weight. This is especially true with NCQ-capable drives, + * which enqueue several requests in advance, and further + * reorder internally-queued requests. + * + * For this reason, we force to false the value of + * idling_boosts_thr_without_issues if there are weight-raised + * busy queues. In this case, and if bfqq is not weight-raised, + * this guarantees that the device is not idled for bfqq (if, + * instead, bfqq is weight-raised, then idling will be + * guaranteed by another variable, see below). Combined with + * the timestamping rules of BFQ (see [1] for details), this + * behavior causes bfqq, and hence any sync non-weight-raised + * queue, to get a lower number of requests served, and thus + * to ask for a lower number of requests from the request + * pool, before the busy weight-raised queues get served + * again. This often mitigates starvation problems in the + * presence of heavy write workloads and NCQ, thereby + * guaranteeing a higher application and system responsiveness + * in these hostile scenarios. + */ + idling_boosts_thr_without_issues = idling_boosts_thr && + bfqd->wr_busy_queues == 0; + + /* + * There is then a case where idling must be performed not + * for throughput concerns, but to preserve service + * guarantees. + * + * To introduce this case, we can note that allowing the drive + * to enqueue more than one request at a time, and hence + * delegating de facto final scheduling decisions to the + * drive's internal scheduler, entails loss of control on the + * actual request service order. In particular, the critical + * situation is when requests from different processes happen + * to be present, at the same time, in the internal queue(s) + * of the drive. In such a situation, the drive, by deciding + * the service order of the internally-queued requests, does + * determine also the actual throughput distribution among + * these processes. But the drive typically has no notion or + * concern about per-process throughput distribution, and + * makes its decisions only on a per-request basis. Therefore, + * the service distribution enforced by the drive's internal + * scheduler is likely to coincide with the desired + * device-throughput distribution only in a completely + * symmetric scenario where: + * (i) each of these processes must get the same throughput as + * the others; + * (ii) all these processes have the same I/O pattern + * (either sequential or random). + * In fact, in such a scenario, the drive will tend to treat + * the requests of each of these processes in about the same + * way as the requests of the others, and thus to provide + * each of these processes with about the same throughput + * (which is exactly the desired throughput distribution). In + * contrast, in any asymmetric scenario, device idling is + * certainly needed to guarantee that bfqq receives its + * assigned fraction of the device throughput (see [1] for + * details). + * + * We address this issue by controlling, actually, only the + * symmetry sub-condition (i), i.e., provided that + * sub-condition (i) holds, idling is not performed, + * regardless of whether sub-condition (ii) holds. In other + * words, only if sub-condition (i) holds, then idling is + * allowed, and the device tends to be prevented from queueing + * many requests, possibly of several processes. The reason + * for not controlling also sub-condition (ii) is that we + * exploit preemption to preserve guarantees in case of + * symmetric scenarios, even if (ii) does not hold, as + * explained in the next two paragraphs. + * + * Even if a queue, say Q, is expired when it remains idle, Q + * can still preempt the new in-service queue if the next + * request of Q arrives soon (see the comments on + * bfq_bfqq_update_budg_for_activation). If all queues and + * groups have the same weight, this form of preemption, + * combined with the hole-recovery heuristic described in the + * comments on function bfq_bfqq_update_budg_for_activation, + * are enough to preserve a correct bandwidth distribution in + * the mid term, even without idling. In fact, even if not + * idling allows the internal queues of the device to contain + * many requests, and thus to reorder requests, we can rather + * safely assume that the internal scheduler still preserves a + * minimum of mid-term fairness. The motivation for using + * preemption instead of idling is that, by not idling, + * service guarantees are preserved without minimally + * sacrificing throughput. In other words, both a high + * throughput and its desired distribution are obtained. + * + * More precisely, this preemption-based, idleless approach + * provides fairness in terms of IOPS, and not sectors per + * second. This can be seen with a simple example. Suppose + * that there are two queues with the same weight, but that + * the first queue receives requests of 8 sectors, while the + * second queue receives requests of 1024 sectors. In + * addition, suppose that each of the two queues contains at + * most one request at a time, which implies that each queue + * always remains idle after it is served. Finally, after + * remaining idle, each queue receives very quickly a new + * request. It follows that the two queues are served + * alternatively, preempting each other if needed. This + * implies that, although both queues have the same weight, + * the queue with large requests receives a service that is + * 1024/8 times as high as the service received by the other + * queue. + * + * On the other hand, device idling is performed, and thus + * pure sector-domain guarantees are provided, for the + * following queues, which are likely to need stronger + * throughput guarantees: weight-raised queues, and queues + * with a higher weight than other queues. When such queues + * are active, sub-condition (i) is false, which triggers + * device idling. + * + * According to the above considerations, the next variable is + * true (only) if sub-condition (i) holds. To compute the + * value of this variable, we not only use the return value of + * the function bfq_symmetric_scenario(), but also check + * whether bfqq is being weight-raised, because + * bfq_symmetric_scenario() does not take into account also + * weight-raised queues (see comments on + * bfq_weights_tree_add()). + * + * As a side note, it is worth considering that the above + * device-idling countermeasures may however fail in the + * following unlucky scenario: if idling is (correctly) + * disabled in a time period during which all symmetry + * sub-conditions hold, and hence the device is allowed to + * enqueue many requests, but at some later point in time some + * sub-condition stops to hold, then it may become impossible + * to let requests be served in the desired order until all + * the requests already queued in the device have been served. + */ + asymmetric_scenario = bfqq->wr_coeff > 1 || + !bfq_symmetric_scenario(bfqd); + + /* + * Finally, there is a case where maximizing throughput is the + * best choice even if it may cause unfairness toward + * bfqq. Such a case is when bfqq became active in a burst of + * queue activations. Queues that became active during a large + * burst benefit only from throughput, as discussed in the + * comments on bfq_handle_burst. Thus, if bfqq became active + * in a burst and not idling the device maximizes throughput, + * then the device must no be idled, because not idling the + * device provides bfqq and all other queues in the burst with + * maximum benefit. Combining this and the above case, we can + * now establish when idling is actually needed to preserve + * service guarantees. + */ + idling_needed_for_service_guarantees = + asymmetric_scenario && !bfq_bfqq_in_large_burst(bfqq); + + /* + * We have now all the components we need to compute the + * return value of the function, which is true only if idling + * either boosts the throughput (without issues), or is + * necessary to preserve service guarantees. + */ + bfq_log_bfqq(bfqd, bfqq, "sync %d idling_boosts_thr %d", + bfq_bfqq_sync(bfqq), idling_boosts_thr); + + bfq_log_bfqq(bfqd, bfqq, + "wr_busy %d boosts %d IO-bound %d guar %d", + bfqd->wr_busy_queues, + idling_boosts_thr_without_issues, + bfq_bfqq_IO_bound(bfqq), + idling_needed_for_service_guarantees); + + return idling_boosts_thr_without_issues || + idling_needed_for_service_guarantees; +} + +/* + * If the in-service queue is empty but the function bfq_better_to_idle + * returns true, then: + * 1) the queue must remain in service and cannot be expired, and + * 2) the device must be idled to wait for the possible arrival of a new + * request for the queue. + * See the comments on the function bfq_better_to_idle for the reasons + * why performing device idling is the best choice to boost the throughput + * and preserve service guarantees when bfq_better_to_idle itself + * returns true. + */ +static bool bfq_bfqq_must_idle(struct bfq_queue *bfqq) +{ + return RB_EMPTY_ROOT(&bfqq->sort_list) && bfq_better_to_idle(bfqq); +} + +static struct bfq_queue *bfq_choose_bfqq_for_injection(struct bfq_data *bfqd) +{ + struct bfq_queue *bfqq; + + /* + * A linear search; but, with a high probability, very few + * steps are needed to find a candidate queue, i.e., a queue + * with enough budget left for its next request. In fact: + * - BFQ dynamically updates the budget of every queue so as + * to accomodate the expected backlog of the queue; + * - if a queue gets all its requests dispatched as injected + * service, then the queue is removed from the active list + * (and re-added only if it gets new requests, but with + * enough budget for its new backlog). + */ + list_for_each_entry(bfqq, &bfqd->active_list, bfqq_list) + if (!RB_EMPTY_ROOT(&bfqq->sort_list) && + bfq_serv_to_charge(bfqq->next_rq, bfqq) <= + bfq_bfqq_budget_left(bfqq)) { + bfq_log_bfqq(bfqd, bfqq, "returned this queue"); + return bfqq; + } + + bfq_log(bfqd, "no queue found"); + return NULL; +} + +/* + * Select a queue for service. If we have a current queue in service, + * check whether to continue servicing it, or retrieve and set a new one. + */ +static struct bfq_queue *bfq_select_queue(struct bfq_data *bfqd) +{ + struct bfq_queue *bfqq; + struct request *next_rq; + enum bfqq_expiration reason = BFQ_BFQQ_BUDGET_TIMEOUT; + + bfqq = bfqd->in_service_queue; + if (!bfqq) + goto new_queue; + + bfq_log_bfqq(bfqd, bfqq, "already in-service queue"); + + /* + * Do not expire bfqq for budget timeout if bfqq may be about + * to enjoy device idling. The reason why, in this case, we + * prevent bfqq from expiring is the same as in the comments + * on the case where bfq_bfqq_must_idle() returns true, in + * bfq_completed_request(). + */ + if (bfq_may_expire_for_budg_timeout(bfqq) && + !bfq_bfqq_must_idle(bfqq)) + goto expire; + +check_queue: + /* + * This loop is rarely executed more than once. Even when it + * happens, it is much more convenient to re-execute this loop + * than to return NULL and trigger a new dispatch to get a + * request served. + */ + next_rq = bfqq->next_rq; + /* + * If bfqq has requests queued and it has enough budget left to + * serve them, keep the queue, otherwise expire it. + */ + if (next_rq) { + BUG_ON(RB_EMPTY_ROOT(&bfqq->sort_list)); + + if (bfq_serv_to_charge(next_rq, bfqq) > + bfq_bfqq_budget_left(bfqq)) { + /* + * Expire the queue for budget exhaustion, + * which makes sure that the next budget is + * enough to serve the next request, even if + * it comes from the fifo expired path. + */ + reason = BFQ_BFQQ_BUDGET_EXHAUSTED; + goto expire; + } else { + /* + * The idle timer may be pending because we may + * not disable disk idling even when a new request + * arrives. + */ + if (bfq_bfqq_wait_request(bfqq)) { + BUG_ON(!hrtimer_active(&bfqd->idle_slice_timer)); + /* + * If we get here: 1) at least a new request + * has arrived but we have not disabled the + * timer because the request was too small, + * 2) then the block layer has unplugged + * the device, causing the dispatch to be + * invoked. + * + * Since the device is unplugged, now the + * requests are probably large enough to + * provide a reasonable throughput. + * So we disable idling. + */ + bfq_clear_bfqq_wait_request(bfqq); + hrtimer_try_to_cancel(&bfqd->idle_slice_timer); + bfqg_stats_update_idle_time(bfqq_group(bfqq)); + } + goto keep_queue; + } + } + + /* + * No requests pending. However, if the in-service queue is idling + * for a new request, or has requests waiting for a completion and + * may idle after their completion, then keep it anyway. + * + * Yet, to boost throughput, inject service from other queues if + * possible. + */ + if (hrtimer_active(&bfqd->idle_slice_timer) || + (bfqq->dispatched != 0 && bfq_better_to_idle(bfqq))) { + if (bfq_bfqq_injectable(bfqq) && + bfqq->injected_service * bfqq->inject_coeff < + bfqq->entity.service * 10) { + bfq_log_bfqq(bfqd, bfqq, "looking for queue for injection"); + bfqq = bfq_choose_bfqq_for_injection(bfqd); + } else { + if (BFQQ_SEEKY(bfqq)) + bfq_log_bfqq(bfqd, bfqq, + "injection saturated %d * %d >= %d * 10", + bfqq->injected_service, bfqq->inject_coeff, + bfqq->entity.service); + bfqq = NULL; + } + goto keep_queue; + } + + reason = BFQ_BFQQ_NO_MORE_REQUESTS; +expire: + bfq_bfqq_expire(bfqd, bfqq, false, reason); +new_queue: + bfqq = bfq_set_in_service_queue(bfqd); + if (bfqq) { + bfq_log_bfqq(bfqd, bfqq, "checking new queue"); + goto check_queue; + } +keep_queue: + if (bfqq) + bfq_log_bfqq(bfqd, bfqq, "returned this queue"); + else + bfq_log(bfqd, "no queue returned"); + + return bfqq; +} + +static void bfq_update_wr_data(struct bfq_data *bfqd, struct bfq_queue *bfqq) +{ + struct bfq_entity *entity = &bfqq->entity; + + if (bfqq->wr_coeff > 1) { /* queue is being weight-raised */ + BUG_ON(bfqq->wr_cur_max_time == bfqd->bfq_wr_rt_max_time && + time_is_after_jiffies(bfqq->last_wr_start_finish)); + + bfq_log_bfqq(bfqd, bfqq, + "raising period dur %u/%u msec, old coeff %u, w %d(%d)", + jiffies_to_msecs(jiffies - bfqq->last_wr_start_finish), + jiffies_to_msecs(bfqq->wr_cur_max_time), + bfqq->wr_coeff, + bfqq->entity.weight, bfqq->entity.orig_weight); + + BUG_ON(bfqq != bfqd->in_service_queue && entity->weight != + entity->orig_weight * bfqq->wr_coeff); + if (entity->prio_changed) + bfq_log_bfqq(bfqd, bfqq, "WARN: pending prio change"); + + /* + * If the queue was activated in a burst, or too much + * time has elapsed from the beginning of this + * weight-raising period, then end weight raising. + */ + if (bfq_bfqq_in_large_burst(bfqq)) + bfq_bfqq_end_wr(bfqq); + else if (time_is_before_jiffies(bfqq->last_wr_start_finish + + bfqq->wr_cur_max_time)) { + if (bfqq->wr_cur_max_time != bfqd->bfq_wr_rt_max_time || + time_is_before_jiffies(bfqq->wr_start_at_switch_to_srt + + bfq_wr_duration(bfqd))) + bfq_bfqq_end_wr(bfqq); + else { + switch_back_to_interactive_wr(bfqq, bfqd); + BUG_ON(time_is_after_jiffies( + bfqq->last_wr_start_finish)); + bfqq->entity.prio_changed = 1; + bfq_log_bfqq(bfqd, bfqq, + "back to interactive wr"); + } + } + if (bfqq->wr_coeff > 1 && + bfqq->wr_cur_max_time != bfqd->bfq_wr_rt_max_time && + bfqq->service_from_wr > max_service_from_wr) { + /* see comments on max_service_from_wr */ + bfq_bfqq_end_wr(bfqq); + bfq_log_bfqq(bfqd, bfqq, + "too much service"); + } + } + /* + * To improve latency (for this or other queues), immediately + * update weight both if it must be raised and if it must be + * lowered. Since, entity may be on some active tree here, and + * might have a pending change of its ioprio class, invoke + * next function with the last parameter unset (see the + * comments on the function). + */ + if ((entity->weight > entity->orig_weight) != (bfqq->wr_coeff > 1)) + __bfq_entity_update_weight_prio(bfq_entity_service_tree(entity), + entity, false); +} + +/* + * Dispatch one request from bfqq, moving it to the request queue + * dispatch list. + */ +static int bfq_dispatch_request(struct bfq_data *bfqd, + struct bfq_queue *bfqq) +{ + int dispatched = 0; + struct request *rq = bfqq->next_rq; + unsigned long service_to_charge; + + BUG_ON(RB_EMPTY_ROOT(&bfqq->sort_list)); + BUG_ON(!rq); + service_to_charge = bfq_serv_to_charge(rq, bfqq); + + BUG_ON(service_to_charge > bfq_bfqq_budget_left(bfqq)); + + BUG_ON(bfqq->entity.budget < bfqq->entity.service); + + bfq_bfqq_served(bfqq, service_to_charge); + + BUG_ON(bfqq->entity.budget < bfqq->entity.service); + + bfq_dispatch_insert(bfqd->queue, rq); + + bfq_log_bfqq(bfqd, bfqq, + "dispatched %u sec req (%llu), budg left %d, new disp_nr %d", + blk_rq_sectors(rq), + (unsigned long long) blk_rq_pos(rq), + bfq_bfqq_budget_left(bfqq), + bfqq->dispatched); + + dispatched++; + + if (bfqq != bfqd->in_service_queue) { + if (likely(bfqd->in_service_queue)) { + bfqd->in_service_queue->injected_service += + bfq_serv_to_charge(rq, bfqq); + bfq_log_bfqq(bfqd, bfqd->in_service_queue, + "injected_service increased to %d", + bfqd->in_service_queue->injected_service); + } + return dispatched; + } + + /* + * If weight raising has to terminate for bfqq, then next + * function causes an immediate update of bfqq's weight, + * without waiting for next activation. As a consequence, on + * expiration, bfqq will be timestamped as if has never been + * weight-raised during this service slot, even if it has + * received part or even most of the service as a + * weight-raised queue. This inflates bfqq's timestamps, which + * is beneficial, as bfqq is then more willing to leave the + * device immediately to possible other weight-raised queues. + */ + bfq_update_wr_data(bfqd, bfqq); + + if (!bfqd->in_service_bic) { + atomic_long_inc(&RQ_BIC(rq)->icq.ioc->refcount); + bfqd->in_service_bic = RQ_BIC(rq); + BUG_ON(!bfqd->in_service_bic); + } + + if (bfqd->busy_queues > 1 && bfq_class_idle(bfqq)) + goto expire; + + return dispatched; + +expire: + bfq_bfqq_expire(bfqd, bfqq, false, BFQ_BFQQ_BUDGET_EXHAUSTED); + return dispatched; +} + +static int __bfq_forced_dispatch_bfqq(struct bfq_queue *bfqq) +{ + int dispatched = 0; + + while (bfqq->next_rq) { + bfq_dispatch_insert(bfqq->bfqd->queue, bfqq->next_rq); + dispatched++; + } + + BUG_ON(!list_empty(&bfqq->fifo)); + return dispatched; +} + +/* + * Drain our current requests. + * Used for barriers and when switching io schedulers on-the-fly. + */ +static int bfq_forced_dispatch(struct bfq_data *bfqd) +{ + struct bfq_queue *bfqq, *n; + struct bfq_service_tree *st; + int dispatched = 0; + + bfqq = bfqd->in_service_queue; + if (bfqq) + __bfq_bfqq_expire(bfqd, bfqq); + + /* + * Loop through classes, and be careful to leave the scheduler + * in a consistent state, as feedback mechanisms and vtime + * updates cannot be disabled during the process. + */ + list_for_each_entry_safe(bfqq, n, &bfqd->active_list, bfqq_list) { + st = bfq_entity_service_tree(&bfqq->entity); + + dispatched += __bfq_forced_dispatch_bfqq(bfqq); + + bfqq->max_budget = bfq_max_budget(bfqd); + bfq_forget_idle(st); + } + + BUG_ON(bfqd->busy_queues != 0); + + return dispatched; +} + +static int bfq_dispatch_requests(struct request_queue *q, int force) +{ + struct bfq_data *bfqd = q->elevator->elevator_data; + struct bfq_queue *bfqq; + + bfq_log(bfqd, "%d busy queues", bfqd->busy_queues); + + if (bfqd->busy_queues == 0) + return 0; + + if (unlikely(force)) + return bfq_forced_dispatch(bfqd); + + /* + * Force device to serve one request at a time if + * strict_guarantees is true. Forcing this service scheme is + * currently the ONLY way to guarantee that the request + * service order enforced by the scheduler is respected by a + * queueing device. Otherwise the device is free even to make + * some unlucky request wait for as long as the device + * wishes. + * + * Of course, serving one request at at time may cause loss of + * throughput. + */ + if (bfqd->strict_guarantees && bfqd->rq_in_driver > 0) + return 0; + + bfqq = bfq_select_queue(bfqd); + if (!bfqq) + return 0; + + BUG_ON(bfqq == bfqd->in_service_queue && + bfqq->entity.budget < bfqq->entity.service); + + BUG_ON(bfqq == bfqd->in_service_queue && + bfq_bfqq_wait_request(bfqq)); + + if (!bfq_dispatch_request(bfqd, bfqq)) + return 0; + + bfq_log_bfqq(bfqd, bfqq, "%s request", + bfq_bfqq_sync(bfqq) ? "sync" : "async"); + + BUG_ON(bfqq->next_rq == NULL && + bfqq->entity.budget < bfqq->entity.service); + return 1; +} + +/* + * Task holds one reference to the queue, dropped when task exits. Each rq + * in-flight on this queue also holds a reference, dropped when rq is freed. + * + * Queue lock must be held here. Recall not to use bfqq after calling + * this function on it. + */ +static void bfq_put_queue(struct bfq_queue *bfqq) +{ +#ifdef BFQ_GROUP_IOSCHED_ENABLED + struct bfq_group *bfqg = bfqq_group(bfqq); +#endif + + BUG_ON(bfqq->ref <= 0); + + bfq_log_bfqq(bfqq->bfqd, bfqq, "%p %d", bfqq, bfqq->ref); + bfqq->ref--; + if (bfqq->ref) + return; + + BUG_ON(rb_first(&bfqq->sort_list)); + BUG_ON(bfqq->allocated[READ] + bfqq->allocated[WRITE] != 0); + BUG_ON(bfqq->entity.tree); + BUG_ON(bfq_bfqq_busy(bfqq)); + + if (!hlist_unhashed(&bfqq->burst_list_node)) { + hlist_del_init(&bfqq->burst_list_node); + /* + * Decrement also burst size after the removal, if the + * process associated with bfqq is exiting, and thus + * does not contribute to the burst any longer. This + * decrement helps filter out false positives of large + * bursts, when some short-lived process (often due to + * the execution of commands by some service) happens + * to start and exit while a complex application is + * starting, and thus spawning several processes that + * do I/O (and that *must not* be treated as a large + * burst, see comments on bfq_handle_burst). + * + * In particular, the decrement is performed only if: + * 1) bfqq is not a merged queue, because, if it is, + * then this free of bfqq is not triggered by the exit + * of the process bfqq is associated with, but exactly + * by the fact that bfqq has just been merged. + * 2) burst_size is greater than 0, to handle + * unbalanced decrements. Unbalanced decrements may + * happen in te following case: bfqq is inserted into + * the current burst list--without incrementing + * bust_size--because of a split, but the current + * burst list is not the burst list bfqq belonged to + * (see comments on the case of a split in + * bfq_set_request). + */ + if (bfqq->bic && bfqq->bfqd->burst_size > 0) + bfqq->bfqd->burst_size--; + } + + bfq_log_bfqq(bfqq->bfqd, bfqq, "%p freed", bfqq); + + kmem_cache_free(bfq_pool, bfqq); +#ifdef BFQ_GROUP_IOSCHED_ENABLED + bfqg_put(bfqg); +#endif +} + +static void bfq_put_cooperator(struct bfq_queue *bfqq) +{ + struct bfq_queue *__bfqq, *next; + + /* + * If this queue was scheduled to merge with another queue, be + * sure to drop the reference taken on that queue (and others in + * the merge chain). See bfq_setup_merge and bfq_merge_bfqqs. + */ + __bfqq = bfqq->new_bfqq; + while (__bfqq) { + if (__bfqq == bfqq) + break; + next = __bfqq->new_bfqq; + bfq_put_queue(__bfqq); + __bfqq = next; + } +} + +static void bfq_exit_bfqq(struct bfq_data *bfqd, struct bfq_queue *bfqq) +{ + if (bfqq == bfqd->in_service_queue) { + __bfq_bfqq_expire(bfqd, bfqq); + bfq_schedule_dispatch(bfqd); + } + + bfq_log_bfqq(bfqd, bfqq, "%p, %d", bfqq, bfqq->ref); + + bfq_put_cooperator(bfqq); + + bfq_put_queue(bfqq); /* release process reference */ +} + +static void bfq_init_icq(struct io_cq *icq) +{ + icq_to_bic(icq)->ttime.last_end_request = ktime_get_ns() - (1ULL<<32); +} + +static void bfq_exit_icq(struct io_cq *icq) +{ + struct bfq_io_cq *bic = icq_to_bic(icq); + struct bfq_data *bfqd = bic_to_bfqd(bic); + + if (bic_to_bfqq(bic, false)) { + bfq_exit_bfqq(bfqd, bic_to_bfqq(bic, false)); + bic_set_bfqq(bic, NULL, false); + } + + if (bic_to_bfqq(bic, true)) { + /* + * If the bic is using a shared queue, put the reference + * taken on the io_context when the bic started using a + * shared bfq_queue. + */ + if (bfq_bfqq_coop(bic_to_bfqq(bic, true))) + put_io_context(icq->ioc); + bfq_exit_bfqq(bfqd, bic_to_bfqq(bic, true)); + bic_set_bfqq(bic, NULL, true); + } +} + +/* + * Update the entity prio values; note that the new values will not + * be used until the next (re)activation. + */ +static void bfq_set_next_ioprio_data(struct bfq_queue *bfqq, + struct bfq_io_cq *bic) +{ + struct task_struct *tsk = current; + int ioprio_class; + + ioprio_class = IOPRIO_PRIO_CLASS(bic->ioprio); + switch (ioprio_class) { + default: + dev_err(bfqq->bfqd->queue->backing_dev_info->dev, + "bfq: bad prio class %d\n", ioprio_class); + case IOPRIO_CLASS_NONE: + /* + * No prio set, inherit CPU scheduling settings. + */ + bfqq->new_ioprio = task_nice_ioprio(tsk); + bfqq->new_ioprio_class = task_nice_ioclass(tsk); + break; + case IOPRIO_CLASS_RT: + bfqq->new_ioprio = IOPRIO_PRIO_DATA(bic->ioprio); + bfqq->new_ioprio_class = IOPRIO_CLASS_RT; + break; + case IOPRIO_CLASS_BE: + bfqq->new_ioprio = IOPRIO_PRIO_DATA(bic->ioprio); + bfqq->new_ioprio_class = IOPRIO_CLASS_BE; + break; + case IOPRIO_CLASS_IDLE: + bfqq->new_ioprio_class = IOPRIO_CLASS_IDLE; + bfqq->new_ioprio = 7; + break; + } + + if (bfqq->new_ioprio >= IOPRIO_BE_NR) { + pr_crit("bfq_set_next_ioprio_data: new_ioprio %d\n", + bfqq->new_ioprio); + BUG(); + } + + bfqq->entity.new_weight = bfq_ioprio_to_weight(bfqq->new_ioprio); + bfqq->entity.prio_changed = 1; + bfq_log_bfqq(bfqq->bfqd, bfqq, + "bic_class %d prio %d class %d", + ioprio_class, bfqq->new_ioprio, bfqq->new_ioprio_class); +} + +static void bfq_check_ioprio_change(struct bfq_io_cq *bic, struct bio *bio) +{ + struct bfq_data *bfqd = bic_to_bfqd(bic); + struct bfq_queue *bfqq; + unsigned long uninitialized_var(flags); + int ioprio = bic->icq.ioc->ioprio; + + /* + * This condition may trigger on a newly created bic, be sure to + * drop the lock before returning. + */ + if (unlikely(!bfqd) || likely(bic->ioprio == ioprio)) + return; + + bic->ioprio = ioprio; + + bfqq = bic_to_bfqq(bic, false); + if (bfqq) { + /* release process reference on this queue */ + bfq_put_queue(bfqq); + bfqq = bfq_get_queue(bfqd, bio, BLK_RW_ASYNC, bic); + bic_set_bfqq(bic, bfqq, false); + bfq_log_bfqq(bfqd, bfqq, + "bfqq %p %d", + bfqq, bfqq->ref); + } + + bfqq = bic_to_bfqq(bic, true); + if (bfqq) + bfq_set_next_ioprio_data(bfqq, bic); +} + +static void bfq_init_bfqq(struct bfq_data *bfqd, struct bfq_queue *bfqq, + struct bfq_io_cq *bic, pid_t pid, int is_sync) +{ + RB_CLEAR_NODE(&bfqq->entity.rb_node); + INIT_LIST_HEAD(&bfqq->fifo); + INIT_HLIST_NODE(&bfqq->burst_list_node); + BUG_ON(!hlist_unhashed(&bfqq->burst_list_node)); + + bfqq->ref = 0; + bfqq->bfqd = bfqd; + + if (bic) + bfq_set_next_ioprio_data(bfqq, bic); + + if (is_sync) { + /* + * No need to mark as has_short_ttime if in + * idle_class, because no device idling is performed + * for queues in idle class + */ + if (!bfq_class_idle(bfqq)) + /* tentatively mark as has_short_ttime */ + bfq_mark_bfqq_has_short_ttime(bfqq); + bfq_mark_bfqq_sync(bfqq); + bfq_mark_bfqq_just_created(bfqq); + /* + * Aggressively inject a lot of service: up to 90%. + * This coefficient remains constant during bfqq life, + * but this behavior might be changed, after enough + * testing and tuning. + */ + bfqq->inject_coeff = 1; + } else + bfq_clear_bfqq_sync(bfqq); + bfq_mark_bfqq_IO_bound(bfqq); + + /* Tentative initial value to trade off between thr and lat */ + bfqq->max_budget = (2 * bfq_max_budget(bfqd)) / 3; + bfqq->pid = pid; + + bfqq->wr_coeff = 1; + bfqq->last_wr_start_finish = jiffies; + bfqq->wr_start_at_switch_to_srt = bfq_smallest_from_now(); + bfqq->budget_timeout = bfq_smallest_from_now(); + bfqq->split_time = bfq_smallest_from_now(); + + /* + * To not forget the possibly high bandwidth consumed by a + * process/queue in the recent past, + * bfq_bfqq_softrt_next_start() returns a value at least equal + * to the current value of bfqq->soft_rt_next_start (see + * comments on bfq_bfqq_softrt_next_start). Set + * soft_rt_next_start to now, to mean that bfqq has consumed + * no bandwidth so far. + */ + bfqq->soft_rt_next_start = jiffies; + + /* first request is almost certainly seeky */ + bfqq->seek_history = 1; +} + +static struct bfq_queue **bfq_async_queue_prio(struct bfq_data *bfqd, + struct bfq_group *bfqg, + int ioprio_class, int ioprio) +{ + switch (ioprio_class) { + case IOPRIO_CLASS_RT: + return &bfqg->async_bfqq[0][ioprio]; + case IOPRIO_CLASS_NONE: + ioprio = IOPRIO_NORM; + /* fall through */ + case IOPRIO_CLASS_BE: + return &bfqg->async_bfqq[1][ioprio]; + case IOPRIO_CLASS_IDLE: + return &bfqg->async_idle_bfqq; + default: + BUG(); + } +} + +static struct bfq_queue *bfq_get_queue(struct bfq_data *bfqd, + struct bio *bio, bool is_sync, + struct bfq_io_cq *bic) +{ + const int ioprio = IOPRIO_PRIO_DATA(bic->ioprio); + const int ioprio_class = IOPRIO_PRIO_CLASS(bic->ioprio); + struct bfq_queue **async_bfqq = NULL; + struct bfq_queue *bfqq; + struct bfq_group *bfqg; + + rcu_read_lock(); + + bfqg = bfq_find_set_group(bfqd, bio_blkcg(bio)); + if (!bfqg) { + bfqq = &bfqd->oom_bfqq; + goto out; + } + + if (!is_sync) { + async_bfqq = bfq_async_queue_prio(bfqd, bfqg, ioprio_class, + ioprio); + bfqq = *async_bfqq; + if (bfqq) + goto out; + } + + bfqq = kmem_cache_alloc_node(bfq_pool, + GFP_NOWAIT | __GFP_ZERO | __GFP_NOWARN, + bfqd->queue->node); + + if (bfqq) { + bfq_init_bfqq(bfqd, bfqq, bic, current->pid, + is_sync); + bfq_init_entity(&bfqq->entity, bfqg); + bfq_log_bfqq(bfqd, bfqq, "allocated"); + } else { + bfqq = &bfqd->oom_bfqq; + bfq_log_bfqq(bfqd, bfqq, "using oom bfqq"); + goto out; + } + + /* + * Pin the queue now that it's allocated, scheduler exit will + * prune it. + */ + if (async_bfqq) { + bfqq->ref++; /* + * Extra group reference, w.r.t. sync + * queue. This extra reference is removed + * only if bfqq->bfqg disappears, to + * guarantee that this queue is not freed + * until its group goes away. + */ + bfq_log_bfqq(bfqd, bfqq, "bfqq not in async: %p, %d", + bfqq, bfqq->ref); + *async_bfqq = bfqq; + } + +out: + bfqq->ref++; /* get a process reference to this queue */ + bfq_log_bfqq(bfqd, bfqq, "at end: %p, %d", bfqq, bfqq->ref); + rcu_read_unlock(); + return bfqq; +} + +static void bfq_update_io_thinktime(struct bfq_data *bfqd, + struct bfq_io_cq *bic) +{ + struct bfq_ttime *ttime = &bic->ttime; + u64 elapsed = ktime_get_ns() - bic->ttime.last_end_request; + + elapsed = min_t(u64, elapsed, 2 * bfqd->bfq_slice_idle); + + ttime->ttime_samples = (7*bic->ttime.ttime_samples + 256) / 8; + ttime->ttime_total = div_u64(7*ttime->ttime_total + 256*elapsed, 8); + ttime->ttime_mean = div64_ul(ttime->ttime_total + 128, + ttime->ttime_samples); +} + +static void +bfq_update_io_seektime(struct bfq_data *bfqd, struct bfq_queue *bfqq, + struct request *rq) +{ + bfqq->seek_history <<= 1; + bfqq->seek_history |= + get_sdist(bfqq->last_request_pos, rq) > BFQQ_SEEK_THR && + (!blk_queue_nonrot(bfqd->queue) || + blk_rq_sectors(rq) < BFQQ_SECT_THR_NONROT); +} + +static void bfq_update_has_short_ttime(struct bfq_data *bfqd, + struct bfq_queue *bfqq, + struct bfq_io_cq *bic) +{ + bool has_short_ttime = true; + + /* + * No need to update has_short_ttime if bfqq is async or in + * idle io prio class, or if bfq_slice_idle is zero, because + * no device idling is performed for bfqq in this case. + */ + if (!bfq_bfqq_sync(bfqq) || bfq_class_idle(bfqq) || + bfqd->bfq_slice_idle == 0) + return; + + /* Idle window just restored, statistics are meaningless. */ + if (time_is_after_eq_jiffies(bfqq->split_time + + bfqd->bfq_wr_min_idle_time)) + return; + + /* Think time is infinite if no process is linked to + * bfqq. Otherwise check average think time to + * decide whether to mark as has_short_ttime + */ + if (atomic_read(&bic->icq.ioc->active_ref) == 0 || + (bfq_sample_valid(bic->ttime.ttime_samples) && + bic->ttime.ttime_mean > bfqd->bfq_slice_idle)) + has_short_ttime = false; + + bfq_log_bfqq(bfqd, bfqq, "has_short_ttime %d", + has_short_ttime); + + if (has_short_ttime) + bfq_mark_bfqq_has_short_ttime(bfqq); + else + bfq_clear_bfqq_has_short_ttime(bfqq); +} + +/* + * Called when a new fs request (rq) is added to bfqq. Check if there's + * something we should do about it. + */ +static void bfq_rq_enqueued(struct bfq_data *bfqd, struct bfq_queue *bfqq, + struct request *rq) +{ + struct bfq_io_cq *bic = RQ_BIC(rq); + + if (rq->cmd_flags & REQ_META) + bfqq->meta_pending++; + + bfq_update_io_thinktime(bfqd, bic); + bfq_update_has_short_ttime(bfqd, bfqq, bic); + bfq_update_io_seektime(bfqd, bfqq, rq); + + bfq_log_bfqq(bfqd, bfqq, + "has_short_ttime=%d (seeky %d)", + bfq_bfqq_has_short_ttime(bfqq), BFQQ_SEEKY(bfqq)); + + bfqq->last_request_pos = blk_rq_pos(rq) + blk_rq_sectors(rq); + + if (bfqq == bfqd->in_service_queue && bfq_bfqq_wait_request(bfqq)) { + bool small_req = bfqq->queued[rq_is_sync(rq)] == 1 && + blk_rq_sectors(rq) < 32; + bool budget_timeout = bfq_bfqq_budget_timeout(bfqq); + + /* + * There is just this request queued: if the request + * is small and the queue is not to be expired, then + * just exit. + * + * In this way, if the device is being idled to wait + * for a new request from the in-service queue, we + * avoid unplugging the device and committing the + * device to serve just a small request. On the + * contrary, we wait for the block layer to decide + * when to unplug the device: hopefully, new requests + * will be merged to this one quickly, then the device + * will be unplugged and larger requests will be + * dispatched. + */ + if (small_req && !budget_timeout) + return; + + /* + * A large enough request arrived, or the queue is to + * be expired: in both cases disk idling is to be + * stopped, so clear wait_request flag and reset + * timer. + */ + bfq_clear_bfqq_wait_request(bfqq); + hrtimer_try_to_cancel(&bfqd->idle_slice_timer); + bfqg_stats_update_idle_time(bfqq_group(bfqq)); + + /* + * The queue is not empty, because a new request just + * arrived. Hence we can safely expire the queue, in + * case of budget timeout, without risking that the + * timestamps of the queue are not updated correctly. + * See [1] for more details. + */ + if (budget_timeout) + bfq_bfqq_expire(bfqd, bfqq, false, + BFQ_BFQQ_BUDGET_TIMEOUT); + + /* + * Let the request rip immediately, or let a new queue be + * selected if bfqq has just been expired. + */ + __blk_run_queue(bfqd->queue); + } +} + +static void bfq_insert_request(struct request_queue *q, struct request *rq) +{ + struct bfq_data *bfqd = q->elevator->elevator_data; + struct bfq_queue *bfqq = RQ_BFQQ(rq), *new_bfqq; + + assert_spin_locked(bfqd->queue->queue_lock); + + /* + * An unplug may trigger a requeue of a request from the device + * driver: make sure we are in process context while trying to + * merge two bfq_queues. + */ + if (!in_interrupt()) { + new_bfqq = bfq_setup_cooperator(bfqd, bfqq, rq, true); + if (new_bfqq) { + if (bic_to_bfqq(RQ_BIC(rq), 1) != bfqq) + new_bfqq = bic_to_bfqq(RQ_BIC(rq), 1); + /* + * Release the request's reference to the old bfqq + * and make sure one is taken to the shared queue. + */ + new_bfqq->allocated[rq_data_dir(rq)]++; + bfqq->allocated[rq_data_dir(rq)]--; + new_bfqq->ref++; + if (bic_to_bfqq(RQ_BIC(rq), 1) == bfqq) + bfq_merge_bfqqs(bfqd, RQ_BIC(rq), + bfqq, new_bfqq); + + bfq_clear_bfqq_just_created(bfqq); + /* + * rq is about to be enqueued into new_bfqq, + * release rq reference on bfqq + */ + bfq_put_queue(bfqq); + rq->elv.priv[1] = new_bfqq; + bfqq = new_bfqq; + } + } + + bfq_add_request(rq); + + rq->fifo_time = ktime_get_ns() + bfqd->bfq_fifo_expire[rq_is_sync(rq)]; + list_add_tail(&rq->queuelist, &bfqq->fifo); + + bfq_rq_enqueued(bfqd, bfqq, rq); +} + +static void bfq_update_hw_tag(struct bfq_data *bfqd) +{ + bfqd->max_rq_in_driver = max_t(int, bfqd->max_rq_in_driver, + bfqd->rq_in_driver); + + if (bfqd->hw_tag == 1) + return; + + /* + * This sample is valid if the number of outstanding requests + * is large enough to allow a queueing behavior. Note that the + * sum is not exact, as it's not taking into account deactivated + * requests. + */ + if (bfqd->rq_in_driver + bfqd->queued < BFQ_HW_QUEUE_THRESHOLD) + return; + + if (bfqd->hw_tag_samples++ < BFQ_HW_QUEUE_SAMPLES) + return; + + bfqd->hw_tag = bfqd->max_rq_in_driver > BFQ_HW_QUEUE_THRESHOLD; + bfqd->max_rq_in_driver = 0; + bfqd->hw_tag_samples = 0; +} + +static void bfq_completed_request(struct request_queue *q, struct request *rq) +{ + struct bfq_queue *bfqq = RQ_BFQQ(rq); + struct bfq_data *bfqd = bfqq->bfqd; + u64 now_ns; + u32 delta_us; + + bfq_log_bfqq(bfqd, bfqq, "completed one req with %u sects left", + blk_rq_sectors(rq)); + + assert_spin_locked(bfqd->queue->queue_lock); + bfq_update_hw_tag(bfqd); + + BUG_ON(!bfqd->rq_in_driver); + BUG_ON(!bfqq->dispatched); + bfqd->rq_in_driver--; + bfqq->dispatched--; + bfqg_stats_update_completion(bfqq_group(bfqq), + rq->start_time_ns, + rq->io_start_time_ns, + rq->cmd_flags); + + if (!bfqq->dispatched && !bfq_bfqq_busy(bfqq)) { + BUG_ON(!RB_EMPTY_ROOT(&bfqq->sort_list)); + /* + * Set budget_timeout (which we overload to store the + * time at which the queue remains with no backlog and + * no outstanding request; used by the weight-raising + * mechanism). + */ + bfqq->budget_timeout = jiffies; + + bfq_weights_tree_remove(bfqd, bfqq); + } + + now_ns = ktime_get_ns(); + + RQ_BIC(rq)->ttime.last_end_request = now_ns; + + /* + * Using us instead of ns, to get a reasonable precision in + * computing rate in next check. + */ + delta_us = div_u64(now_ns - bfqd->last_completion, NSEC_PER_USEC); + + bfq_log(bfqd, "delta %uus/%luus max_size %u rate %llu/%llu", + delta_us, BFQ_MIN_TT/NSEC_PER_USEC, bfqd->last_rq_max_size, + delta_us > 0 ? + (USEC_PER_SEC* + (u64)((bfqd->last_rq_max_size<>BFQ_RATE_SHIFT : + (USEC_PER_SEC* + (u64)(bfqd->last_rq_max_size<>BFQ_RATE_SHIFT, + (USEC_PER_SEC*(u64)(1UL<<(BFQ_RATE_SHIFT-10)))>>BFQ_RATE_SHIFT); + + /* + * If the request took rather long to complete, and, according + * to the maximum request size recorded, this completion latency + * implies that the request was certainly served at a very low + * rate (less than 1M sectors/sec), then the whole observation + * interval that lasts up to this time instant cannot be a + * valid time interval for computing a new peak rate. Invoke + * bfq_update_rate_reset to have the following three steps + * taken: + * - close the observation interval at the last (previous) + * request dispatch or completion + * - compute rate, if possible, for that observation interval + * - reset to zero samples, which will trigger a proper + * re-initialization of the observation interval on next + * dispatch + */ + if (delta_us > BFQ_MIN_TT/NSEC_PER_USEC && + (bfqd->last_rq_max_size<last_completion = now_ns; + + /* + * If we are waiting to discover whether the request pattern + * of the task associated with the queue is actually + * isochronous, and both requisites for this condition to hold + * are now satisfied, then compute soft_rt_next_start (see the + * comments on the function bfq_bfqq_softrt_next_start()). We + * schedule this delayed check when bfqq expires, if it still + * has in-flight requests. + */ + if (bfq_bfqq_softrt_update(bfqq) && bfqq->dispatched == 0 && + RB_EMPTY_ROOT(&bfqq->sort_list)) + bfqq->soft_rt_next_start = + bfq_bfqq_softrt_next_start(bfqd, bfqq); + + /* + * If this is the in-service queue, check if it needs to be expired, + * or if we want to idle in case it has no pending requests. + */ + if (bfqd->in_service_queue == bfqq) { + if (bfq_bfqq_must_idle(bfqq)) { + if (bfqq->dispatched == 0) + bfq_arm_slice_timer(bfqd); + /* + * If we get here, we do not expire bfqq, even + * if bfqq was in budget timeout or had no + * more requests (as controlled in the next + * conditional instructions). The reason for + * not expiring bfqq is as follows. + * + * Here bfqq->dispatched > 0 holds, but + * bfq_bfqq_must_idle() returned true. This + * implies that, even if no request arrives + * for bfqq before bfqq->dispatched reaches 0, + * bfqq will, however, not be expired on the + * completion event that causes bfqq->dispatch + * to reach zero. In contrast, on this event, + * bfqq will start enjoying device idling + * (I/O-dispatch plugging). + * + * But, if we expired bfqq here, bfqq would + * not have the chance to enjoy device idling + * when bfqq->dispatched finally reaches + * zero. This would expose bfqq to violation + * of its reserved service guarantees. + */ + goto out; + } else if (bfq_may_expire_for_budg_timeout(bfqq)) + bfq_bfqq_expire(bfqd, bfqq, false, + BFQ_BFQQ_BUDGET_TIMEOUT); + else if (RB_EMPTY_ROOT(&bfqq->sort_list) && + (bfqq->dispatched == 0 || + !bfq_better_to_idle(bfqq))) + bfq_bfqq_expire(bfqd, bfqq, false, + BFQ_BFQQ_NO_MORE_REQUESTS); + } + + if (!bfqd->rq_in_driver) + bfq_schedule_dispatch(bfqd); + +out: + return; +} + +static int __bfq_may_queue(struct bfq_queue *bfqq) +{ + if (bfq_bfqq_wait_request(bfqq) && bfq_bfqq_must_alloc(bfqq)) { + bfq_clear_bfqq_must_alloc(bfqq); + return ELV_MQUEUE_MUST; + } + + return ELV_MQUEUE_MAY; +} + +static int bfq_may_queue(struct request_queue *q, unsigned int op) +{ + struct bfq_data *bfqd = q->elevator->elevator_data; + struct task_struct *tsk = current; + struct bfq_io_cq *bic; + struct bfq_queue *bfqq; + + /* + * Don't force setup of a queue from here, as a call to may_queue + * does not necessarily imply that a request actually will be + * queued. So just lookup a possibly existing queue, or return + * 'may queue' if that fails. + */ + bic = bfq_bic_lookup(bfqd, tsk->io_context); + if (!bic) + return ELV_MQUEUE_MAY; + + bfqq = bic_to_bfqq(bic, op_is_sync(op)); + if (bfqq) + return __bfq_may_queue(bfqq); + + return ELV_MQUEUE_MAY; +} + +/* + * Queue lock held here. + */ +static void bfq_put_request(struct request *rq) +{ + struct bfq_queue *bfqq = RQ_BFQQ(rq); + + if (bfqq) { + const int rw = rq_data_dir(rq); + + BUG_ON(!bfqq->allocated[rw]); + bfqq->allocated[rw]--; + + rq->elv.priv[0] = NULL; + rq->elv.priv[1] = NULL; + + bfq_log_bfqq(bfqq->bfqd, bfqq, "%p, %d", + bfqq, bfqq->ref); + bfq_put_queue(bfqq); + } +} + +/* + * Returns NULL if a new bfqq should be allocated, or the old bfqq if this + * was the last process referring to that bfqq. + */ +static struct bfq_queue * +bfq_split_bfqq(struct bfq_io_cq *bic, struct bfq_queue *bfqq) +{ + bfq_log_bfqq(bfqq->bfqd, bfqq, "splitting queue"); + + put_io_context(bic->icq.ioc); + + if (bfqq_process_refs(bfqq) == 1) { + bfqq->pid = current->pid; + bfq_clear_bfqq_coop(bfqq); + bfq_clear_bfqq_split_coop(bfqq); + return bfqq; + } + + bic_set_bfqq(bic, NULL, 1); + + bfq_put_cooperator(bfqq); + + bfq_put_queue(bfqq); + return NULL; +} + +/* + * Allocate bfq data structures associated with this request. + */ +static int bfq_set_request(struct request_queue *q, struct request *rq, + struct bio *bio, gfp_t gfp_mask) +{ + struct bfq_data *bfqd = q->elevator->elevator_data; + struct bfq_io_cq *bic = icq_to_bic(rq->elv.icq); + const int rw = rq_data_dir(rq); + const int is_sync = rq_is_sync(rq); + struct bfq_queue *bfqq; + unsigned long flags; + bool bfqq_already_existing = false, split = false; + + spin_lock_irqsave(q->queue_lock, flags); + + if (!bic) + goto queue_fail; + + bfq_check_ioprio_change(bic, bio); + + bfq_bic_update_cgroup(bic, bio); + +new_queue: + bfqq = bic_to_bfqq(bic, is_sync); + if (!bfqq || bfqq == &bfqd->oom_bfqq) { + if (bfqq) + bfq_put_queue(bfqq); + bfqq = bfq_get_queue(bfqd, bio, is_sync, bic); + BUG_ON(!hlist_unhashed(&bfqq->burst_list_node)); + + bic_set_bfqq(bic, bfqq, is_sync); + if (split && is_sync) { + bfq_log_bfqq(bfqd, bfqq, + "was_in_list %d " + "was_in_large_burst %d " + "large burst in progress %d", + bic->was_in_burst_list, + bic->saved_in_large_burst, + bfqd->large_burst); + + if ((bic->was_in_burst_list && bfqd->large_burst) || + bic->saved_in_large_burst) { + bfq_log_bfqq(bfqd, bfqq, + "marking in " + "large burst"); + bfq_mark_bfqq_in_large_burst(bfqq); + } else { + bfq_log_bfqq(bfqd, bfqq, + "clearing in " + "large burst"); + bfq_clear_bfqq_in_large_burst(bfqq); + if (bic->was_in_burst_list) + /* + * If bfqq was in the current + * burst list before being + * merged, then we have to add + * it back. And we do not need + * to increase burst_size, as + * we did not decrement + * burst_size when we removed + * bfqq from the burst list as + * a consequence of a merge + * (see comments in + * bfq_put_queue). In this + * respect, it would be rather + * costly to know whether the + * current burst list is still + * the same burst list from + * which bfqq was removed on + * the merge. To avoid this + * cost, if bfqq was in a + * burst list, then we add + * bfqq to the current burst + * list without any further + * check. This can cause + * inappropriate insertions, + * but rarely enough to not + * harm the detection of large + * bursts significantly. + */ + hlist_add_head(&bfqq->burst_list_node, + &bfqd->burst_list); + } + bfqq->split_time = jiffies; + } + } else { + /* If the queue was seeky for too long, break it apart. */ + if (bfq_bfqq_coop(bfqq) && bfq_bfqq_split_coop(bfqq)) { + bfq_log_bfqq(bfqd, bfqq, "breaking apart bfqq"); + + /* Update bic before losing reference to bfqq */ + if (bfq_bfqq_in_large_burst(bfqq)) + bic->saved_in_large_burst = true; + + bfqq = bfq_split_bfqq(bic, bfqq); + split = true; + if (!bfqq) + goto new_queue; + else + bfqq_already_existing = true; + } + } + + bfqq->allocated[rw]++; + bfqq->ref++; + bfq_log_bfqq(bfqd, bfqq, "bfqq %p, %d", bfqq, bfqq->ref); + + rq->elv.priv[0] = bic; + rq->elv.priv[1] = bfqq; + + /* + * If a bfq_queue has only one process reference, it is owned + * by only one bfq_io_cq: we can set the bic field of the + * bfq_queue to the address of that structure. Also, if the + * queue has just been split, mark a flag so that the + * information is available to the other scheduler hooks. + */ + if (likely(bfqq != &bfqd->oom_bfqq) && bfqq_process_refs(bfqq) == 1) { + bfqq->bic = bic; + if (split) { + /* + * If the queue has just been split from a shared + * queue, restore the idle window and the possible + * weight raising period. + */ + bfq_bfqq_resume_state(bfqq, bfqd, bic, + bfqq_already_existing); + } + } + + if (unlikely(bfq_bfqq_just_created(bfqq))) + bfq_handle_burst(bfqd, bfqq); + + spin_unlock_irqrestore(q->queue_lock, flags); + + return 0; + +queue_fail: + bfq_schedule_dispatch(bfqd); + spin_unlock_irqrestore(q->queue_lock, flags); + + return 1; +} + +static void bfq_kick_queue(struct work_struct *work) +{ + struct bfq_data *bfqd = + container_of(work, struct bfq_data, unplug_work); + struct request_queue *q = bfqd->queue; + + spin_lock_irq(q->queue_lock); + __blk_run_queue(q); + spin_unlock_irq(q->queue_lock); +} + +/* + * Handler of the expiration of the timer running if the in-service queue + * is idling inside its time slice. + */ +static enum hrtimer_restart bfq_idle_slice_timer(struct hrtimer *timer) +{ + struct bfq_data *bfqd = container_of(timer, struct bfq_data, + idle_slice_timer); + struct bfq_queue *bfqq; + unsigned long flags; + enum bfqq_expiration reason; + + spin_lock_irqsave(bfqd->queue->queue_lock, flags); + + bfqq = bfqd->in_service_queue; + /* + * Theoretical race here: the in-service queue can be NULL or + * different from the queue that was idling if the timer handler + * spins on the queue_lock and a new request arrives for the + * current queue and there is a full dispatch cycle that changes + * the in-service queue. This can hardly happen, but in the worst + * case we just expire a queue too early. + */ + if (bfqq) { + bfq_log_bfqq(bfqd, bfqq, "expired"); + bfq_clear_bfqq_wait_request(bfqq); + + if (bfq_bfqq_budget_timeout(bfqq)) + /* + * Also here the queue can be safely expired + * for budget timeout without wasting + * guarantees + */ + reason = BFQ_BFQQ_BUDGET_TIMEOUT; + else if (bfqq->queued[0] == 0 && bfqq->queued[1] == 0) + /* + * The queue may not be empty upon timer expiration, + * because we may not disable the timer when the + * first request of the in-service queue arrives + * during disk idling. + */ + reason = BFQ_BFQQ_TOO_IDLE; + else + goto schedule_dispatch; + + bfq_bfqq_expire(bfqd, bfqq, true, reason); + } + +schedule_dispatch: + bfq_schedule_dispatch(bfqd); + + spin_unlock_irqrestore(bfqd->queue->queue_lock, flags); + return HRTIMER_NORESTART; +} + +static void bfq_shutdown_timer_wq(struct bfq_data *bfqd) +{ + hrtimer_cancel(&bfqd->idle_slice_timer); + cancel_work_sync(&bfqd->unplug_work); +} + +static void __bfq_put_async_bfqq(struct bfq_data *bfqd, + struct bfq_queue **bfqq_ptr) +{ + struct bfq_group *root_group = bfqd->root_group; + struct bfq_queue *bfqq = *bfqq_ptr; + + bfq_log(bfqd, "%p", bfqq); + if (bfqq) { + bfq_bfqq_move(bfqd, bfqq, root_group); + bfq_log_bfqq(bfqd, bfqq, "putting %p, %d", + bfqq, bfqq->ref); + bfq_put_queue(bfqq); + *bfqq_ptr = NULL; + } +} + +/* + * Release all the bfqg references to its async queues. If we are + * deallocating the group these queues may still contain requests, so + * we reparent them to the root cgroup (i.e., the only one that will + * exist for sure until all the requests on a device are gone). + */ +static void bfq_put_async_queues(struct bfq_data *bfqd, struct bfq_group *bfqg) +{ + int i, j; + + for (i = 0; i < 2; i++) + for (j = 0; j < IOPRIO_BE_NR; j++) + __bfq_put_async_bfqq(bfqd, &bfqg->async_bfqq[i][j]); + + __bfq_put_async_bfqq(bfqd, &bfqg->async_idle_bfqq); +} + +static void bfq_exit_queue(struct elevator_queue *e) +{ + struct bfq_data *bfqd = e->elevator_data; + struct request_queue *q = bfqd->queue; + struct bfq_queue *bfqq, *n; + + bfq_shutdown_timer_wq(bfqd); + + spin_lock_irq(q->queue_lock); + + BUG_ON(bfqd->in_service_queue); + list_for_each_entry_safe(bfqq, n, &bfqd->idle_list, bfqq_list) + bfq_deactivate_bfqq(bfqd, bfqq, false, false); + + spin_unlock_irq(q->queue_lock); + + bfq_shutdown_timer_wq(bfqd); + + BUG_ON(hrtimer_active(&bfqd->idle_slice_timer)); + +#ifdef BFQ_GROUP_IOSCHED_ENABLED + /* release oom-queue reference to root group */ + bfqg_put(bfqd->root_group); + + blkcg_deactivate_policy(q, &blkcg_policy_bfq); +#else + bfq_put_async_queues(bfqd, bfqd->root_group); + kfree(bfqd->root_group); +#endif + + kfree(bfqd); +} + +static void bfq_init_root_group(struct bfq_group *root_group, + struct bfq_data *bfqd) +{ + int i; + +#ifdef BFQ_GROUP_IOSCHED_ENABLED + root_group->entity.parent = NULL; + root_group->my_entity = NULL; + root_group->bfqd = bfqd; +#endif + root_group->rq_pos_tree = RB_ROOT; + for (i = 0; i < BFQ_IOPRIO_CLASSES; i++) + root_group->sched_data.service_tree[i] = BFQ_SERVICE_TREE_INIT; + root_group->sched_data.bfq_class_idle_last_service = jiffies; +} + +static int bfq_init_queue(struct request_queue *q, struct elevator_type *e) +{ + struct bfq_data *bfqd; + struct elevator_queue *eq; + + eq = elevator_alloc(q, e); + if (!eq) + return -ENOMEM; + + bfqd = kzalloc_node(sizeof(*bfqd), GFP_KERNEL, q->node); + if (!bfqd) { + kobject_put(&eq->kobj); + return -ENOMEM; + } + eq->elevator_data = bfqd; + + /* + * Our fallback bfqq if bfq_find_alloc_queue() runs into OOM issues. + * Grab a permanent reference to it, so that the normal code flow + * will not attempt to free it. + */ + bfq_init_bfqq(bfqd, &bfqd->oom_bfqq, NULL, 1, 0); + bfqd->oom_bfqq.ref++; + bfqd->oom_bfqq.new_ioprio = BFQ_DEFAULT_QUEUE_IOPRIO; + bfqd->oom_bfqq.new_ioprio_class = IOPRIO_CLASS_BE; + bfqd->oom_bfqq.entity.new_weight = + bfq_ioprio_to_weight(bfqd->oom_bfqq.new_ioprio); + + /* oom_bfqq does not participate to bursts */ + bfq_clear_bfqq_just_created(&bfqd->oom_bfqq); + /* + * Trigger weight initialization, according to ioprio, at the + * oom_bfqq's first activation. The oom_bfqq's ioprio and ioprio + * class won't be changed any more. + */ + bfqd->oom_bfqq.entity.prio_changed = 1; + + bfqd->queue = q; + + spin_lock_irq(q->queue_lock); + q->elevator = eq; + spin_unlock_irq(q->queue_lock); + + bfqd->root_group = bfq_create_group_hierarchy(bfqd, q->node); + if (!bfqd->root_group) + goto out_free; + bfq_init_root_group(bfqd->root_group, bfqd); + bfq_init_entity(&bfqd->oom_bfqq.entity, bfqd->root_group); + + hrtimer_init(&bfqd->idle_slice_timer, CLOCK_MONOTONIC, + HRTIMER_MODE_REL); + bfqd->idle_slice_timer.function = bfq_idle_slice_timer; + + bfqd->queue_weights_tree = RB_ROOT; + bfqd->group_weights_tree = RB_ROOT; + + INIT_WORK(&bfqd->unplug_work, bfq_kick_queue); + + INIT_LIST_HEAD(&bfqd->active_list); + INIT_LIST_HEAD(&bfqd->idle_list); + INIT_HLIST_HEAD(&bfqd->burst_list); + + bfqd->hw_tag = -1; + + bfqd->bfq_max_budget = bfq_default_max_budget; + + bfqd->bfq_fifo_expire[0] = bfq_fifo_expire[0]; + bfqd->bfq_fifo_expire[1] = bfq_fifo_expire[1]; + bfqd->bfq_back_max = bfq_back_max; + bfqd->bfq_back_penalty = bfq_back_penalty; + bfqd->bfq_slice_idle = bfq_slice_idle; + bfqd->bfq_timeout = bfq_timeout; + + bfqd->bfq_requests_within_timer = 120; + + bfqd->bfq_large_burst_thresh = 8; + bfqd->bfq_burst_interval = msecs_to_jiffies(180); + + bfqd->low_latency = true; + + /* + * Trade-off between responsiveness and fairness. + */ + bfqd->bfq_wr_coeff = 30; + bfqd->bfq_wr_rt_max_time = msecs_to_jiffies(300); + bfqd->bfq_wr_max_time = 0; + bfqd->bfq_wr_min_idle_time = msecs_to_jiffies(2000); + bfqd->bfq_wr_min_inter_arr_async = msecs_to_jiffies(500); + bfqd->bfq_wr_max_softrt_rate = 7000; /* + * Approximate rate required + * to playback or record a + * high-definition compressed + * video. + */ + bfqd->wr_busy_queues = 0; + + /* + * Begin by assuming, optimistically, that the device peak + * rate is equal to 2/3 of the highest reference rate. + */ + bfqd->rate_dur_prod = ref_rate[blk_queue_nonrot(bfqd->queue)] * + ref_wr_duration[blk_queue_nonrot(bfqd->queue)]; + bfqd->peak_rate = ref_rate[blk_queue_nonrot(bfqd->queue)] * 2 / 3; + + return 0; + +out_free: + kfree(bfqd); + kobject_put(&eq->kobj); + return -ENOMEM; +} + +static void bfq_registered_queue(struct request_queue *q) +{ + wbt_disable_default(q); +} + +static void bfq_slab_kill(void) +{ + kmem_cache_destroy(bfq_pool); +} + +static int __init bfq_slab_setup(void) +{ + bfq_pool = KMEM_CACHE(bfq_queue, 0); + if (!bfq_pool) + return -ENOMEM; + return 0; +} + +static ssize_t bfq_var_show(unsigned int var, char *page) +{ + return sprintf(page, "%u\n", var); +} + +static ssize_t bfq_var_store(unsigned long *var, const char *page, + size_t count) +{ + unsigned long new_val; + int ret = kstrtoul(page, 10, &new_val); + + if (ret == 0) + *var = new_val; + + return count; +} + +static ssize_t bfq_wr_max_time_show(struct elevator_queue *e, char *page) +{ + struct bfq_data *bfqd = e->elevator_data; + + return sprintf(page, "%d\n", bfqd->bfq_wr_max_time > 0 ? + jiffies_to_msecs(bfqd->bfq_wr_max_time) : + jiffies_to_msecs(bfq_wr_duration(bfqd))); +} + +static ssize_t bfq_weights_show(struct elevator_queue *e, char *page) +{ + struct bfq_queue *bfqq; + struct bfq_data *bfqd = e->elevator_data; + ssize_t num_char = 0; + + num_char += sprintf(page + num_char, "Tot reqs queued %d\n\n", + bfqd->queued); + + spin_lock_irq(bfqd->queue->queue_lock); + + num_char += sprintf(page + num_char, "Active:\n"); + list_for_each_entry(bfqq, &bfqd->active_list, bfqq_list) { + num_char += sprintf(page + num_char, + "pid%d: weight %hu, nr_queued %d %d, ", + bfqq->pid, + bfqq->entity.weight, + bfqq->queued[0], + bfqq->queued[1]); + num_char += sprintf(page + num_char, + "dur %d/%u\n", + jiffies_to_msecs( + jiffies - + bfqq->last_wr_start_finish), + jiffies_to_msecs(bfqq->wr_cur_max_time)); + } + + num_char += sprintf(page + num_char, "Idle:\n"); + list_for_each_entry(bfqq, &bfqd->idle_list, bfqq_list) { + num_char += sprintf(page + num_char, + "pid%d: weight %hu, dur %d/%u\n", + bfqq->pid, + bfqq->entity.weight, + jiffies_to_msecs(jiffies - + bfqq->last_wr_start_finish), + jiffies_to_msecs(bfqq->wr_cur_max_time)); + } + + spin_unlock_irq(bfqd->queue->queue_lock); + + return num_char; +} + +#define SHOW_FUNCTION(__FUNC, __VAR, __CONV) \ +static ssize_t __FUNC(struct elevator_queue *e, char *page) \ +{ \ + struct bfq_data *bfqd = e->elevator_data; \ + u64 __data = __VAR; \ + if (__CONV == 1) \ + __data = jiffies_to_msecs(__data); \ + else if (__CONV == 2) \ + __data = div_u64(__data, NSEC_PER_MSEC); \ + return bfq_var_show(__data, (page)); \ +} +SHOW_FUNCTION(bfq_fifo_expire_sync_show, bfqd->bfq_fifo_expire[1], 2); +SHOW_FUNCTION(bfq_fifo_expire_async_show, bfqd->bfq_fifo_expire[0], 2); +SHOW_FUNCTION(bfq_back_seek_max_show, bfqd->bfq_back_max, 0); +SHOW_FUNCTION(bfq_back_seek_penalty_show, bfqd->bfq_back_penalty, 0); +SHOW_FUNCTION(bfq_slice_idle_show, bfqd->bfq_slice_idle, 2); +SHOW_FUNCTION(bfq_max_budget_show, bfqd->bfq_user_max_budget, 0); +SHOW_FUNCTION(bfq_timeout_sync_show, bfqd->bfq_timeout, 1); +SHOW_FUNCTION(bfq_strict_guarantees_show, bfqd->strict_guarantees, 0); +SHOW_FUNCTION(bfq_low_latency_show, bfqd->low_latency, 0); +SHOW_FUNCTION(bfq_wr_coeff_show, bfqd->bfq_wr_coeff, 0); +SHOW_FUNCTION(bfq_wr_rt_max_time_show, bfqd->bfq_wr_rt_max_time, 1); +SHOW_FUNCTION(bfq_wr_min_idle_time_show, bfqd->bfq_wr_min_idle_time, 1); +SHOW_FUNCTION(bfq_wr_min_inter_arr_async_show, bfqd->bfq_wr_min_inter_arr_async, + 1); +SHOW_FUNCTION(bfq_wr_max_softrt_rate_show, bfqd->bfq_wr_max_softrt_rate, 0); +#undef SHOW_FUNCTION + +#define USEC_SHOW_FUNCTION(__FUNC, __VAR) \ +static ssize_t __FUNC(struct elevator_queue *e, char *page) \ +{ \ + struct bfq_data *bfqd = e->elevator_data; \ + u64 __data = __VAR; \ + __data = div_u64(__data, NSEC_PER_USEC); \ + return bfq_var_show(__data, (page)); \ +} +USEC_SHOW_FUNCTION(bfq_slice_idle_us_show, bfqd->bfq_slice_idle); +#undef USEC_SHOW_FUNCTION + +#define STORE_FUNCTION(__FUNC, __PTR, MIN, MAX, __CONV) \ +static ssize_t \ +__FUNC(struct elevator_queue *e, const char *page, size_t count) \ +{ \ + struct bfq_data *bfqd = e->elevator_data; \ + unsigned long uninitialized_var(__data); \ + int ret = bfq_var_store(&__data, (page), count); \ + if (__data < (MIN)) \ + __data = (MIN); \ + else if (__data > (MAX)) \ + __data = (MAX); \ + if (__CONV == 1) \ + *(__PTR) = msecs_to_jiffies(__data); \ + else if (__CONV == 2) \ + *(__PTR) = (u64)__data * NSEC_PER_MSEC; \ + else \ + *(__PTR) = __data; \ + return ret; \ +} +STORE_FUNCTION(bfq_fifo_expire_sync_store, &bfqd->bfq_fifo_expire[1], 1, + INT_MAX, 2); +STORE_FUNCTION(bfq_fifo_expire_async_store, &bfqd->bfq_fifo_expire[0], 1, + INT_MAX, 2); +STORE_FUNCTION(bfq_back_seek_max_store, &bfqd->bfq_back_max, 0, INT_MAX, 0); +STORE_FUNCTION(bfq_back_seek_penalty_store, &bfqd->bfq_back_penalty, 1, + INT_MAX, 0); +STORE_FUNCTION(bfq_slice_idle_store, &bfqd->bfq_slice_idle, 0, INT_MAX, 2); +STORE_FUNCTION(bfq_wr_coeff_store, &bfqd->bfq_wr_coeff, 1, INT_MAX, 0); +STORE_FUNCTION(bfq_wr_max_time_store, &bfqd->bfq_wr_max_time, 0, INT_MAX, 1); +STORE_FUNCTION(bfq_wr_rt_max_time_store, &bfqd->bfq_wr_rt_max_time, 0, INT_MAX, + 1); +STORE_FUNCTION(bfq_wr_min_idle_time_store, &bfqd->bfq_wr_min_idle_time, 0, + INT_MAX, 1); +STORE_FUNCTION(bfq_wr_min_inter_arr_async_store, + &bfqd->bfq_wr_min_inter_arr_async, 0, INT_MAX, 1); +STORE_FUNCTION(bfq_wr_max_softrt_rate_store, &bfqd->bfq_wr_max_softrt_rate, 0, + INT_MAX, 0); +#undef STORE_FUNCTION + +#define USEC_STORE_FUNCTION(__FUNC, __PTR, MIN, MAX) \ +static ssize_t __FUNC(struct elevator_queue *e, const char *page, size_t count)\ +{ \ + struct bfq_data *bfqd = e->elevator_data; \ + unsigned long uninitialized_var(__data); \ + int ret = bfq_var_store(&__data, (page), count); \ + if (__data < (MIN)) \ + __data = (MIN); \ + else if (__data > (MAX)) \ + __data = (MAX); \ + *(__PTR) = (u64)__data * NSEC_PER_USEC; \ + return ret; \ +} +USEC_STORE_FUNCTION(bfq_slice_idle_us_store, &bfqd->bfq_slice_idle, 0, + UINT_MAX); +#undef USEC_STORE_FUNCTION + +/* do nothing for the moment */ +static ssize_t bfq_weights_store(struct elevator_queue *e, + const char *page, size_t count) +{ + return count; +} + +static ssize_t bfq_max_budget_store(struct elevator_queue *e, + const char *page, size_t count) +{ + struct bfq_data *bfqd = e->elevator_data; + unsigned long uninitialized_var(__data); + int ret = bfq_var_store(&__data, (page), count); + + if (__data == 0) + bfqd->bfq_max_budget = bfq_calc_max_budget(bfqd); + else { + if (__data > INT_MAX) + __data = INT_MAX; + bfqd->bfq_max_budget = __data; + } + + bfqd->bfq_user_max_budget = __data; + + return ret; +} + +/* + * Leaving this name to preserve name compatibility with cfq + * parameters, but this timeout is used for both sync and async. + */ +static ssize_t bfq_timeout_sync_store(struct elevator_queue *e, + const char *page, size_t count) +{ + struct bfq_data *bfqd = e->elevator_data; + unsigned long uninitialized_var(__data); + int ret = bfq_var_store(&__data, (page), count); + + if (__data < 1) + __data = 1; + else if (__data > INT_MAX) + __data = INT_MAX; + + bfqd->bfq_timeout = msecs_to_jiffies(__data); + if (bfqd->bfq_user_max_budget == 0) + bfqd->bfq_max_budget = bfq_calc_max_budget(bfqd); + + return ret; +} + +static ssize_t bfq_strict_guarantees_store(struct elevator_queue *e, + const char *page, size_t count) +{ + struct bfq_data *bfqd = e->elevator_data; + unsigned long uninitialized_var(__data); + int ret = bfq_var_store(&__data, (page), count); + + if (__data > 1) + __data = 1; + if (!bfqd->strict_guarantees && __data == 1 + && bfqd->bfq_slice_idle < 8 * NSEC_PER_MSEC) + bfqd->bfq_slice_idle = 8 * NSEC_PER_MSEC; + + bfqd->strict_guarantees = __data; + + return ret; +} + +static ssize_t bfq_low_latency_store(struct elevator_queue *e, + const char *page, size_t count) +{ + struct bfq_data *bfqd = e->elevator_data; + unsigned long uninitialized_var(__data); + int ret = bfq_var_store(&__data, (page), count); + + if (__data > 1) + __data = 1; + if (__data == 0 && bfqd->low_latency != 0) + bfq_end_wr(bfqd); + bfqd->low_latency = __data; + + return ret; +} + +#define BFQ_ATTR(name) \ + __ATTR(name, S_IRUGO|S_IWUSR, bfq_##name##_show, bfq_##name##_store) + +static struct elv_fs_entry bfq_attrs[] = { + BFQ_ATTR(fifo_expire_sync), + BFQ_ATTR(fifo_expire_async), + BFQ_ATTR(back_seek_max), + BFQ_ATTR(back_seek_penalty), + BFQ_ATTR(slice_idle), + BFQ_ATTR(slice_idle_us), + BFQ_ATTR(max_budget), + BFQ_ATTR(timeout_sync), + BFQ_ATTR(strict_guarantees), + BFQ_ATTR(low_latency), + BFQ_ATTR(wr_coeff), + BFQ_ATTR(wr_max_time), + BFQ_ATTR(wr_rt_max_time), + BFQ_ATTR(wr_min_idle_time), + BFQ_ATTR(wr_min_inter_arr_async), + BFQ_ATTR(wr_max_softrt_rate), + BFQ_ATTR(weights), + __ATTR_NULL +}; + +static struct elevator_type iosched_bfq = { + .ops.sq = { + .elevator_merge_fn = bfq_merge, + .elevator_merged_fn = bfq_merged_request, + .elevator_merge_req_fn = bfq_merged_requests, +#ifdef BFQ_GROUP_IOSCHED_ENABLED + .elevator_bio_merged_fn = bfq_bio_merged, +#endif + .elevator_allow_bio_merge_fn = bfq_allow_bio_merge, + .elevator_allow_rq_merge_fn = bfq_allow_rq_merge, + .elevator_dispatch_fn = bfq_dispatch_requests, + .elevator_add_req_fn = bfq_insert_request, + .elevator_activate_req_fn = bfq_activate_request, + .elevator_deactivate_req_fn = bfq_deactivate_request, + .elevator_completed_req_fn = bfq_completed_request, + .elevator_former_req_fn = elv_rb_former_request, + .elevator_latter_req_fn = elv_rb_latter_request, + .elevator_init_icq_fn = bfq_init_icq, + .elevator_exit_icq_fn = bfq_exit_icq, + .elevator_set_req_fn = bfq_set_request, + .elevator_put_req_fn = bfq_put_request, + .elevator_may_queue_fn = bfq_may_queue, + .elevator_init_fn = bfq_init_queue, + .elevator_exit_fn = bfq_exit_queue, + .elevator_registered_fn = bfq_registered_queue, + }, + .icq_size = sizeof(struct bfq_io_cq), + .icq_align = __alignof__(struct bfq_io_cq), + .elevator_attrs = bfq_attrs, + .elevator_name = "bfq-sq", + .elevator_owner = THIS_MODULE, +}; + +#ifdef BFQ_GROUP_IOSCHED_ENABLED +static struct blkcg_policy blkcg_policy_bfq = { + .dfl_cftypes = bfq_blkg_files, + .legacy_cftypes = bfq_blkcg_legacy_files, + + .cpd_alloc_fn = bfq_cpd_alloc, + .cpd_init_fn = bfq_cpd_init, + .cpd_bind_fn = bfq_cpd_init, + .cpd_free_fn = bfq_cpd_free, + + .pd_alloc_fn = bfq_pd_alloc, + .pd_init_fn = bfq_pd_init, + .pd_offline_fn = bfq_pd_offline, + .pd_free_fn = bfq_pd_free, + .pd_reset_stats_fn = bfq_pd_reset_stats, +}; +#endif + +static int __init bfq_init(void) +{ + int ret; + char msg[60] = "BFQ I/O-scheduler: v8r12"; + +#ifdef BFQ_GROUP_IOSCHED_ENABLED + ret = blkcg_policy_register(&blkcg_policy_bfq); + if (ret) + return ret; +#endif + + ret = -ENOMEM; + if (bfq_slab_setup()) + goto err_pol_unreg; + + /* + * Times to load large popular applications for the typical + * systems installed on the reference devices (see the + * comments before the definition of the next + * array). Actually, we use slightly lower values, as the + * estimated peak rate tends to be smaller than the actual + * peak rate. The reason for this last fact is that estimates + * are computed over much shorter time intervals than the long + * intervals typically used for benchmarking. Why? First, to + * adapt more quickly to variations. Second, because an I/O + * scheduler cannot rely on a peak-rate-evaluation workload to + * be run for a long time. + */ + ref_wr_duration[0] = msecs_to_jiffies(7000); /* actually 8 sec */ + ref_wr_duration[1] = msecs_to_jiffies(2500); /* actually 3 sec */ + + ret = elv_register(&iosched_bfq); + if (ret) + goto slab_kill; + +#ifdef BFQ_GROUP_IOSCHED_ENABLED + strcat(msg, " (with cgroups support)"); +#endif + pr_info("%s", msg); + + return 0; + +slab_kill: + bfq_slab_kill(); +err_pol_unreg: +#ifdef BFQ_GROUP_IOSCHED_ENABLED + blkcg_policy_unregister(&blkcg_policy_bfq); +#endif + return ret; +} + +static void __exit bfq_exit(void) +{ + elv_unregister(&iosched_bfq); +#ifdef BFQ_GROUP_IOSCHED_ENABLED + blkcg_policy_unregister(&blkcg_policy_bfq); +#endif + bfq_slab_kill(); +} + +module_init(bfq_init); +module_exit(bfq_exit); + +MODULE_AUTHOR("Arianna Avanzini, Fabio Checconi, Paolo Valente"); +MODULE_LICENSE("GPL"); diff --git a/block/bfq.h b/block/bfq.h new file mode 100644 index 00000000000..b258b92ac44 --- /dev/null +++ b/block/bfq.h @@ -0,0 +1,1022 @@ +/* + * BFQ v8r12 for 4.11.0: data structures and common functions prototypes. + * + * Based on ideas and code from CFQ: + * Copyright (C) 2003 Jens Axboe + * + * Copyright (C) 2008 Fabio Checconi + * Paolo Valente + * + * Copyright (C) 2015 Paolo Valente + * + * Copyright (C) 2017 Paolo Valente + */ + +#ifndef _BFQ_H +#define _BFQ_H + +#include +#include + +/* + * Define an alternative macro to compile cgroups support. This is one + * of the steps needed to let bfq-mq share the files bfq-sched.c and + * bfq-cgroup.c with bfq-sq. For bfq-mq, the macro + * BFQ_GROUP_IOSCHED_ENABLED will be defined as a function of whether + * the configuration option CONFIG_BFQ_MQ_GROUP_IOSCHED, and not + * CONFIG_BFQ_GROUP_IOSCHED, is defined. + */ +#ifdef CONFIG_BFQ_SQ_GROUP_IOSCHED +#define BFQ_GROUP_IOSCHED_ENABLED +#endif + +#define BFQ_IOPRIO_CLASSES 3 +#define BFQ_CL_IDLE_TIMEOUT (HZ/5) + +#define BFQ_MIN_WEIGHT 1 +#define BFQ_MAX_WEIGHT 1000 +#define BFQ_WEIGHT_CONVERSION_COEFF 10 + +#define BFQ_DEFAULT_QUEUE_IOPRIO 4 + +#define BFQ_WEIGHT_LEGACY_DFL 100 +#define BFQ_DEFAULT_GRP_IOPRIO 0 +#define BFQ_DEFAULT_GRP_CLASS IOPRIO_CLASS_BE + +/* + * Soft real-time applications are extremely more latency sensitive + * than interactive ones. Over-raise the weight of the former to + * privilege them against the latter. + */ +#define BFQ_SOFTRT_WEIGHT_FACTOR 100 + +struct bfq_entity; + +/** + * struct bfq_service_tree - per ioprio_class service tree. + * + * Each service tree represents a B-WF2Q+ scheduler on its own. Each + * ioprio_class has its own independent scheduler, and so its own + * bfq_service_tree. All the fields are protected by the queue lock + * of the containing bfqd. + */ +struct bfq_service_tree { + /* tree for active entities (i.e., those backlogged) */ + struct rb_root active; + /* tree for idle entities (i.e., not backlogged, with V <= F_i)*/ + struct rb_root idle; + + struct bfq_entity *first_idle; /* idle entity with minimum F_i */ + struct bfq_entity *last_idle; /* idle entity with maximum F_i */ + + u64 vtime; /* scheduler virtual time */ + /* scheduler weight sum; active and idle entities contribute to it */ + unsigned long wsum; +}; + +/** + * struct bfq_sched_data - multi-class scheduler. + * + * bfq_sched_data is the basic scheduler queue. It supports three + * ioprio_classes, and can be used either as a toplevel queue or as an + * intermediate queue in a hierarchical setup. + * + * The supported ioprio_classes are the same as in CFQ, in descending + * priority order, IOPRIO_CLASS_RT, IOPRIO_CLASS_BE, IOPRIO_CLASS_IDLE. + * Requests from higher priority queues are served before all the + * requests from lower priority queues; among requests of the same + * queue requests are served according to B-WF2Q+. + * + * The schedule is implemented by the service trees, plus the field + * @next_in_service, which points to the entity on the active trees + * that will be served next, if 1) no changes in the schedule occurs + * before the current in-service entity is expired, 2) the in-service + * queue becomes idle when it expires, and 3) if the entity pointed by + * in_service_entity is not a queue, then the in-service child entity + * of the entity pointed by in_service_entity becomes idle on + * expiration. This peculiar definition allows for the following + * optimization, not yet exploited: while a given entity is still in + * service, we already know which is the best candidate for next + * service among the other active entitities in the same parent + * entity. We can then quickly compare the timestamps of the + * in-service entity with those of such best candidate. + * + * All the fields are protected by the queue lock of the containing + * bfqd. + */ +struct bfq_sched_data { + struct bfq_entity *in_service_entity; /* entity in service */ + /* head-of-the-line entity in the scheduler (see comments above) */ + struct bfq_entity *next_in_service; + /* array of service trees, one per ioprio_class */ + struct bfq_service_tree service_tree[BFQ_IOPRIO_CLASSES]; + /* last time CLASS_IDLE was served */ + unsigned long bfq_class_idle_last_service; + +}; + +/** + * struct bfq_weight_counter - counter of the number of all active entities + * with a given weight. + */ +struct bfq_weight_counter { + unsigned int weight; /* weight of the entities this counter refers to */ + unsigned int num_active; /* nr of active entities with this weight */ + /* + * Weights tree member (see bfq_data's @queue_weights_tree and + * @group_weights_tree) + */ + struct rb_node weights_node; +}; + +/** + * struct bfq_entity - schedulable entity. + * + * A bfq_entity is used to represent either a bfq_queue (leaf node in the + * cgroup hierarchy) or a bfq_group into the upper level scheduler. Each + * entity belongs to the sched_data of the parent group in the cgroup + * hierarchy. Non-leaf entities have also their own sched_data, stored + * in @my_sched_data. + * + * Each entity stores independently its priority values; this would + * allow different weights on different devices, but this + * functionality is not exported to userspace by now. Priorities and + * weights are updated lazily, first storing the new values into the + * new_* fields, then setting the @prio_changed flag. As soon as + * there is a transition in the entity state that allows the priority + * update to take place the effective and the requested priority + * values are synchronized. + * + * Unless cgroups are used, the weight value is calculated from the + * ioprio to export the same interface as CFQ. When dealing with + * ``well-behaved'' queues (i.e., queues that do not spend too much + * time to consume their budget and have true sequential behavior, and + * when there are no external factors breaking anticipation) the + * relative weights at each level of the cgroups hierarchy should be + * guaranteed. All the fields are protected by the queue lock of the + * containing bfqd. + */ +struct bfq_entity { + struct rb_node rb_node; /* service_tree member */ + /* pointer to the weight counter associated with this entity */ + struct bfq_weight_counter *weight_counter; + + /* + * Flag, true if the entity is on a tree (either the active or + * the idle one of its service_tree) or is in service. + */ + bool on_st; + + u64 finish; /* B-WF2Q+ finish timestamp (aka F_i) */ + u64 start; /* B-WF2Q+ start timestamp (aka S_i) */ + + /* tree the entity is enqueued into; %NULL if not on a tree */ + struct rb_root *tree; + + /* + * minimum start time of the (active) subtree rooted at this + * entity; used for O(log N) lookups into active trees + */ + u64 min_start; + + /* amount of service received during the last service slot */ + int service; + + /* budget, used also to calculate F_i: F_i = S_i + @budget / @weight */ + int budget; + + unsigned int weight; /* weight of the queue */ + unsigned int new_weight; /* next weight if a change is in progress */ + + /* original weight, used to implement weight boosting */ + unsigned int orig_weight; + + /* parent entity, for hierarchical scheduling */ + struct bfq_entity *parent; + + /* + * For non-leaf nodes in the hierarchy, the associated + * scheduler queue, %NULL on leaf nodes. + */ + struct bfq_sched_data *my_sched_data; + /* the scheduler queue this entity belongs to */ + struct bfq_sched_data *sched_data; + + /* flag, set to request a weight, ioprio or ioprio_class change */ + int prio_changed; +}; + +struct bfq_group; + +/** + * struct bfq_queue - leaf schedulable entity. + * + * A bfq_queue is a leaf request queue; it can be associated with an + * io_context or more, if it is async or shared between cooperating + * processes. @cgroup holds a reference to the cgroup, to be sure that it + * does not disappear while a bfqq still references it (mostly to avoid + * races between request issuing and task migration followed by cgroup + * destruction). + * All the fields are protected by the queue lock of the containing bfqd. + */ +struct bfq_queue { + /* reference counter */ + int ref; + /* parent bfq_data */ + struct bfq_data *bfqd; + + /* current ioprio and ioprio class */ + unsigned short ioprio, ioprio_class; + /* next ioprio and ioprio class if a change is in progress */ + unsigned short new_ioprio, new_ioprio_class; + + /* + * Shared bfq_queue if queue is cooperating with one or more + * other queues. + */ + struct bfq_queue *new_bfqq; + /* request-position tree member (see bfq_group's @rq_pos_tree) */ + struct rb_node pos_node; + /* request-position tree root (see bfq_group's @rq_pos_tree) */ + struct rb_root *pos_root; + + /* sorted list of pending requests */ + struct rb_root sort_list; + /* if fifo isn't expired, next request to serve */ + struct request *next_rq; + /* number of sync and async requests queued */ + int queued[2]; + /* number of sync and async requests currently allocated */ + int allocated[2]; + /* number of pending metadata requests */ + int meta_pending; + /* fifo list of requests in sort_list */ + struct list_head fifo; + + /* entity representing this queue in the scheduler */ + struct bfq_entity entity; + + /* maximum budget allowed from the feedback mechanism */ + int max_budget; + /* budget expiration (in jiffies) */ + unsigned long budget_timeout; + + /* number of requests on the dispatch list or inside driver */ + int dispatched; + + unsigned int flags; /* status flags.*/ + + /* node for active/idle bfqq list inside parent bfqd */ + struct list_head bfqq_list; + + /* bit vector: a 1 for each seeky requests in history */ + u32 seek_history; + + /* node for the device's burst list */ + struct hlist_node burst_list_node; + + /* position of the last request enqueued */ + sector_t last_request_pos; + + /* Number of consecutive pairs of request completion and + * arrival, such that the queue becomes idle after the + * completion, but the next request arrives within an idle + * time slice; used only if the queue's IO_bound flag has been + * cleared. + */ + unsigned int requests_within_timer; + + /* pid of the process owning the queue, used for logging purposes */ + pid_t pid; + + /* + * Pointer to the bfq_io_cq owning the bfq_queue, set to %NULL + * if the queue is shared. + */ + struct bfq_io_cq *bic; + + /* current maximum weight-raising time for this queue */ + unsigned long wr_cur_max_time; + /* + * Minimum time instant such that, only if a new request is + * enqueued after this time instant in an idle @bfq_queue with + * no outstanding requests, then the task associated with the + * queue it is deemed as soft real-time (see the comments on + * the function bfq_bfqq_softrt_next_start()) + */ + unsigned long soft_rt_next_start; + /* + * Start time of the current weight-raising period if + * the @bfq-queue is being weight-raised, otherwise + * finish time of the last weight-raising period. + */ + unsigned long last_wr_start_finish; + /* factor by which the weight of this queue is multiplied */ + unsigned int wr_coeff; + /* + * Time of the last transition of the @bfq_queue from idle to + * backlogged. + */ + unsigned long last_idle_bklogged; + /* + * Cumulative service received from the @bfq_queue since the + * last transition from idle to backlogged. + */ + unsigned long service_from_backlogged; + /* + * Cumulative service received from the @bfq_queue since its + * last transition to weight-raised state. + */ + unsigned long service_from_wr; + /* + * Value of wr start time when switching to soft rt + */ + unsigned long wr_start_at_switch_to_srt; + + unsigned long split_time; /* time of last split */ + + unsigned long first_IO_time; /* time of first I/O for this queue */ + + /* max service rate measured so far */ + u32 max_service_rate; + /* + * Ratio between the service received by bfqq while it is in + * service, and the cumulative service (of requests of other + * queues) that may be injected while bfqq is empty but still + * in service. To increase precision, the coefficient is + * measured in tenths of unit. Here are some example of (1) + * ratios, (2) resulting percentages of service injected + * w.r.t. to the total service dispatched while bfqq is in + * service, and (3) corresponding values of the coefficient: + * 1 (50%) -> 10 + * 2 (33%) -> 20 + * 10 (9%) -> 100 + * 9.9 (9%) -> 99 + * 1.5 (40%) -> 15 + * 0.5 (66%) -> 5 + * 0.1 (90%) -> 1 + * + * So, if the coefficient is lower than 10, then + * injected service is more than bfqq service. + */ + unsigned int inject_coeff; + /* amount of service injected in current service slot */ + unsigned int injected_service; +}; + +/** + * struct bfq_ttime - per process thinktime stats. + */ +struct bfq_ttime { + u64 last_end_request; /* completion time of last request */ + + u64 ttime_total; /* total process thinktime */ + unsigned long ttime_samples; /* number of thinktime samples */ + u64 ttime_mean; /* average process thinktime */ + +}; + +/** + * struct bfq_io_cq - per (request_queue, io_context) structure. + */ +struct bfq_io_cq { + /* associated io_cq structure */ + struct io_cq icq; /* must be the first member */ + /* array of two process queues, the sync and the async */ + struct bfq_queue *bfqq[2]; + /* associated @bfq_ttime struct */ + struct bfq_ttime ttime; + /* per (request_queue, blkcg) ioprio */ + int ioprio; +#ifdef BFQ_GROUP_IOSCHED_ENABLED + uint64_t blkcg_serial_nr; /* the current blkcg serial */ +#endif + + /* + * Snapshot of the has_short_time flag before merging; taken + * to remember its value while the queue is merged, so as to + * be able to restore it in case of split. + */ + bool saved_has_short_ttime; + /* + * Same purpose as the previous two fields for the I/O bound + * classification of a queue. + */ + bool saved_IO_bound; + + /* + * Same purpose as the previous fields for the value of the + * field keeping the queue's belonging to a large burst + */ + bool saved_in_large_burst; + /* + * True if the queue belonged to a burst list before its merge + * with another cooperating queue. + */ + bool was_in_burst_list; + + /* + * Similar to previous fields: save wr information. + */ + unsigned long saved_wr_coeff; + unsigned long saved_last_wr_start_finish; + unsigned long saved_wr_start_at_switch_to_srt; + unsigned int saved_wr_cur_max_time; +}; + +/** + * struct bfq_data - per-device data structure. + * + * All the fields are protected by the @queue lock. + */ +struct bfq_data { + /* request queue for the device */ + struct request_queue *queue; + + /* root bfq_group for the device */ + struct bfq_group *root_group; + + /* + * rbtree of weight counters of @bfq_queues, sorted by + * weight. Used to keep track of whether all @bfq_queues have + * the same weight. The tree contains one counter for each + * distinct weight associated to some active and not + * weight-raised @bfq_queue (see the comments to the functions + * bfq_weights_tree_[add|remove] for further details). + */ + struct rb_root queue_weights_tree; + /* + * rbtree of non-queue @bfq_entity weight counters, sorted by + * weight. Used to keep track of whether all @bfq_groups have + * the same weight. The tree contains one counter for each + * distinct weight associated to some active @bfq_group (see + * the comments to the functions bfq_weights_tree_[add|remove] + * for further details). + */ + struct rb_root group_weights_tree; + + /* + * Number of bfq_queues containing requests (including the + * queue in service, even if it is idling). + */ + int busy_queues; + /* number of weight-raised busy @bfq_queues */ + int wr_busy_queues; + /* number of queued requests */ + int queued; + /* number of requests dispatched and waiting for completion */ + int rq_in_driver; + + /* + * Maximum number of requests in driver in the last + * @hw_tag_samples completed requests. + */ + int max_rq_in_driver; + /* number of samples used to calculate hw_tag */ + int hw_tag_samples; + /* flag set to one if the driver is showing a queueing behavior */ + int hw_tag; + + /* number of budgets assigned */ + int budgets_assigned; + + /* + * Timer set when idling (waiting) for the next request from + * the queue in service. + */ + struct hrtimer idle_slice_timer; + /* delayed work to restart dispatching on the request queue */ + struct work_struct unplug_work; + + /* bfq_queue in service */ + struct bfq_queue *in_service_queue; + /* bfq_io_cq (bic) associated with the @in_service_queue */ + struct bfq_io_cq *in_service_bic; + + /* on-disk position of the last served request */ + sector_t last_position; + + /* time of last request completion (ns) */ + u64 last_completion; + + /* time of first rq dispatch in current observation interval (ns) */ + u64 first_dispatch; + /* time of last rq dispatch in current observation interval (ns) */ + u64 last_dispatch; + + /* beginning of the last budget */ + ktime_t last_budget_start; + /* beginning of the last idle slice */ + ktime_t last_idling_start; + + /* number of samples in current observation interval */ + int peak_rate_samples; + /* num of samples of seq dispatches in current observation interval */ + u32 sequential_samples; + /* total num of sectors transferred in current observation interval */ + u64 tot_sectors_dispatched; + /* max rq size seen during current observation interval (sectors) */ + u32 last_rq_max_size; + /* time elapsed from first dispatch in current observ. interval (us) */ + u64 delta_from_first; + /* + * Current estimate of the device peak rate, measured in + * [(sectors/usec) / 2^BFQ_RATE_SHIFT]. The left-shift by + * BFQ_RATE_SHIFT is performed to increase precision in + * fixed-point calculations. + */ + u32 peak_rate; + + /* maximum budget allotted to a bfq_queue before rescheduling */ + int bfq_max_budget; + + /* list of all the bfq_queues active on the device */ + struct list_head active_list; + /* list of all the bfq_queues idle on the device */ + struct list_head idle_list; + + /* + * Timeout for async/sync requests; when it fires, requests + * are served in fifo order. + */ + u64 bfq_fifo_expire[2]; + /* weight of backward seeks wrt forward ones */ + unsigned int bfq_back_penalty; + /* maximum allowed backward seek */ + unsigned int bfq_back_max; + /* maximum idling time */ + u32 bfq_slice_idle; + + /* user-configured max budget value (0 for auto-tuning) */ + int bfq_user_max_budget; + /* + * Timeout for bfq_queues to consume their budget; used to + * prevent seeky queues from imposing long latencies to + * sequential or quasi-sequential ones (this also implies that + * seeky queues cannot receive guarantees in the service + * domain; after a timeout they are charged for the time they + * have been in service, to preserve fairness among them, but + * without service-domain guarantees). + */ + unsigned int bfq_timeout; + + /* + * Number of consecutive requests that must be issued within + * the idle time slice to set again idling to a queue which + * was marked as non-I/O-bound (see the definition of the + * IO_bound flag for further details). + */ + unsigned int bfq_requests_within_timer; + + /* + * Force device idling whenever needed to provide accurate + * service guarantees, without caring about throughput + * issues. CAVEAT: this may even increase latencies, in case + * of useless idling for processes that did stop doing I/O. + */ + bool strict_guarantees; + + /* + * Last time at which a queue entered the current burst of + * queues being activated shortly after each other; for more + * details about this and the following parameters related to + * a burst of activations, see the comments on the function + * bfq_handle_burst. + */ + unsigned long last_ins_in_burst; + /* + * Reference time interval used to decide whether a queue has + * been activated shortly after @last_ins_in_burst. + */ + unsigned long bfq_burst_interval; + /* number of queues in the current burst of queue activations */ + int burst_size; + + /* common parent entity for the queues in the burst */ + struct bfq_entity *burst_parent_entity; + /* Maximum burst size above which the current queue-activation + * burst is deemed as 'large'. + */ + unsigned long bfq_large_burst_thresh; + /* true if a large queue-activation burst is in progress */ + bool large_burst; + /* + * Head of the burst list (as for the above fields, more + * details in the comments on the function bfq_handle_burst). + */ + struct hlist_head burst_list; + + /* if set to true, low-latency heuristics are enabled */ + bool low_latency; + /* + * Maximum factor by which the weight of a weight-raised queue + * is multiplied. + */ + unsigned int bfq_wr_coeff; + /* maximum duration of a weight-raising period (jiffies) */ + unsigned int bfq_wr_max_time; + + /* Maximum weight-raising duration for soft real-time processes */ + unsigned int bfq_wr_rt_max_time; + /* + * Minimum idle period after which weight-raising may be + * reactivated for a queue (in jiffies). + */ + unsigned int bfq_wr_min_idle_time; + /* + * Minimum period between request arrivals after which + * weight-raising may be reactivated for an already busy async + * queue (in jiffies). + */ + unsigned long bfq_wr_min_inter_arr_async; + + /* Max service-rate for a soft real-time queue, in sectors/sec */ + unsigned int bfq_wr_max_softrt_rate; + /* + * Cached value of the product ref_rate*ref_wr_duration, used + * for computing the maximum duration of weight raising + * automatically. + */ + u64 rate_dur_prod; + + /* fallback dummy bfqq for extreme OOM conditions */ + struct bfq_queue oom_bfqq; +}; + +enum bfqq_state_flags { + BFQ_BFQQ_FLAG_just_created = 0, /* queue just allocated */ + BFQ_BFQQ_FLAG_busy, /* has requests or is in service */ + BFQ_BFQQ_FLAG_wait_request, /* waiting for a request */ + BFQ_BFQQ_FLAG_non_blocking_wait_rq, /* + * waiting for a request + * without idling the device + */ + BFQ_BFQQ_FLAG_must_alloc, /* must be allowed rq alloc */ + BFQ_BFQQ_FLAG_fifo_expire, /* FIFO checked in this slice */ + BFQ_BFQQ_FLAG_has_short_ttime, /* queue has a short think time */ + BFQ_BFQQ_FLAG_sync, /* synchronous queue */ + BFQ_BFQQ_FLAG_IO_bound, /* + * bfqq has timed-out at least once + * having consumed at most 2/10 of + * its budget + */ + BFQ_BFQQ_FLAG_in_large_burst, /* + * bfqq activated in a large burst, + * see comments to bfq_handle_burst. + */ + BFQ_BFQQ_FLAG_softrt_update, /* + * may need softrt-next-start + * update + */ + BFQ_BFQQ_FLAG_coop, /* bfqq is shared */ + BFQ_BFQQ_FLAG_split_coop /* shared bfqq will be split */ +}; + +#define BFQ_BFQQ_FNS(name) \ +static void bfq_mark_bfqq_##name(struct bfq_queue *bfqq) \ +{ \ + (bfqq)->flags |= (1 << BFQ_BFQQ_FLAG_##name); \ +} \ +static void bfq_clear_bfqq_##name(struct bfq_queue *bfqq) \ +{ \ + (bfqq)->flags &= ~(1 << BFQ_BFQQ_FLAG_##name); \ +} \ +static int bfq_bfqq_##name(const struct bfq_queue *bfqq) \ +{ \ + return ((bfqq)->flags & (1 << BFQ_BFQQ_FLAG_##name)) != 0; \ +} + +BFQ_BFQQ_FNS(just_created); +BFQ_BFQQ_FNS(busy); +BFQ_BFQQ_FNS(wait_request); +BFQ_BFQQ_FNS(non_blocking_wait_rq); +BFQ_BFQQ_FNS(must_alloc); +BFQ_BFQQ_FNS(fifo_expire); +BFQ_BFQQ_FNS(has_short_ttime); +BFQ_BFQQ_FNS(sync); +BFQ_BFQQ_FNS(IO_bound); +BFQ_BFQQ_FNS(in_large_burst); +BFQ_BFQQ_FNS(coop); +BFQ_BFQQ_FNS(split_coop); +BFQ_BFQQ_FNS(softrt_update); +#undef BFQ_BFQQ_FNS + +/* Logging facilities. */ +#ifdef CONFIG_BFQ_REDIRECT_TO_CONSOLE + +static const char *checked_dev_name(const struct device *dev) +{ + static const char nodev[] = "nodev"; + + if (dev) + return dev_name(dev); + + return nodev; +} + +#ifdef BFQ_GROUP_IOSCHED_ENABLED +static struct bfq_group *bfqq_group(struct bfq_queue *bfqq); +static struct blkcg_gq *bfqg_to_blkg(struct bfq_group *bfqg); + +#define bfq_log_bfqq(bfqd, bfqq, fmt, args...) do { \ + char __pbuf[128]; \ + \ + assert_spin_locked((bfqd)->queue->queue_lock); \ + blkg_path(bfqg_to_blkg(bfqq_group(bfqq)), __pbuf, sizeof(__pbuf)); \ + pr_crit("%s bfq%d%c %s [%s] " fmt "\n", \ + checked_dev_name((bfqd)->queue->backing_dev_info->dev), \ + (bfqq)->pid, \ + bfq_bfqq_sync((bfqq)) ? 'S' : 'A', \ + __pbuf, __func__, ##args); \ +} while (0) + +#define bfq_log_bfqg(bfqd, bfqg, fmt, args...) do { \ + char __pbuf[128]; \ + \ + blkg_path(bfqg_to_blkg(bfqg), __pbuf, sizeof(__pbuf)); \ + pr_crit("%s %s [%s] " fmt "\n", \ + checked_dev_name((bfqd)->queue->backing_dev_info->dev), \ + __pbuf, __func__, ##args); \ +} while (0) + +#else /* BFQ_GROUP_IOSCHED_ENABLED */ + +#define bfq_log_bfqq(bfqd, bfqq, fmt, args...) \ + pr_crit("%s bfq%d%c [%s] " fmt "\n", \ + checked_dev_name((bfqd)->queue->backing_dev_info->dev), \ + (bfqq)->pid, bfq_bfqq_sync((bfqq)) ? 'S' : 'A', \ + __func__, ##args) +#define bfq_log_bfqg(bfqd, bfqg, fmt, args...) do {} while (0) + +#endif /* BFQ_GROUP_IOSCHED_ENABLED */ + +#define bfq_log(bfqd, fmt, args...) \ + pr_crit("%s bfq [%s] " fmt "\n", \ + checked_dev_name((bfqd)->queue->backing_dev_info->dev), \ + __func__, ##args) + +#else /* CONFIG_BFQ_REDIRECT_TO_CONSOLE */ + +#if !defined(CONFIG_BLK_DEV_IO_TRACE) + +/* Avoid possible "unused-variable" warning. See commit message. */ + +#define bfq_log_bfqq(bfqd, bfqq, fmt, args...) ((void) (bfqq)) + +#define bfq_log_bfqg(bfqd, bfqg, fmt, args...) ((void) (bfqg)) + +#define bfq_log(bfqd, fmt, args...) do {} while (0) + +#else /* CONFIG_BLK_DEV_IO_TRACE */ + +#include + +#ifdef BFQ_GROUP_IOSCHED_ENABLED +static struct bfq_group *bfqq_group(struct bfq_queue *bfqq); +static struct blkcg_gq *bfqg_to_blkg(struct bfq_group *bfqg); + +#define bfq_log_bfqq(bfqd, bfqq, fmt, args...) do { \ + char __pbuf[128]; \ + \ + assert_spin_locked((bfqd)->queue->queue_lock); \ + blkg_path(bfqg_to_blkg(bfqq_group(bfqq)), __pbuf, sizeof(__pbuf)); \ + blk_add_trace_msg((bfqd)->queue, "bfq%d%c %s [%s] " fmt, \ + (bfqq)->pid, \ + bfq_bfqq_sync((bfqq)) ? 'S' : 'A', \ + __pbuf, __func__, ##args); \ +} while (0) + +#define bfq_log_bfqg(bfqd, bfqg, fmt, args...) do { \ + char __pbuf[128]; \ + \ + blkg_path(bfqg_to_blkg(bfqg), __pbuf, sizeof(__pbuf)); \ + blk_add_trace_msg((bfqd)->queue, "%s [%s] " fmt, __pbuf, \ + __func__, ##args); \ +} while (0) + +#else /* BFQ_GROUP_IOSCHED_ENABLED */ + +#define bfq_log_bfqq(bfqd, bfqq, fmt, args...) \ + blk_add_trace_msg((bfqd)->queue, "bfq%d%c [%s] " fmt, (bfqq)->pid, \ + bfq_bfqq_sync((bfqq)) ? 'S' : 'A', \ + __func__, ##args) +#define bfq_log_bfqg(bfqd, bfqg, fmt, args...) do {} while (0) + +#endif /* BFQ_GROUP_IOSCHED_ENABLED */ + +#define bfq_log(bfqd, fmt, args...) \ + blk_add_trace_msg((bfqd)->queue, "bfq [%s] " fmt, __func__, ##args) + +#endif /* CONFIG_BLK_DEV_IO_TRACE */ +#endif /* CONFIG_BFQ_REDIRECT_TO_CONSOLE */ + +/* Expiration reasons. */ +enum bfqq_expiration { + BFQ_BFQQ_TOO_IDLE = 0, /* + * queue has been idling for + * too long + */ + BFQ_BFQQ_BUDGET_TIMEOUT, /* budget took too long to be used */ + BFQ_BFQQ_BUDGET_EXHAUSTED, /* budget consumed */ + BFQ_BFQQ_NO_MORE_REQUESTS, /* the queue has no more requests */ + BFQ_BFQQ_PREEMPTED /* preemption in progress */ +}; + + +struct bfqg_stats { +#if defined(BFQ_GROUP_IOSCHED_ENABLED) && defined(CONFIG_DEBUG_BLK_CGROUP) + /* number of ios merged */ + struct blkg_rwstat merged; + /* total time spent on device in ns, may not be accurate w/ queueing */ + struct blkg_rwstat service_time; + /* total time spent waiting in scheduler queue in ns */ + struct blkg_rwstat wait_time; + /* number of IOs queued up */ + struct blkg_rwstat queued; + /* total disk time and nr sectors dispatched by this group */ + struct blkg_stat time; + /* sum of number of ios queued across all samples */ + struct blkg_stat avg_queue_size_sum; + /* count of samples taken for average */ + struct blkg_stat avg_queue_size_samples; + /* how many times this group has been removed from service tree */ + struct blkg_stat dequeue; + /* total time spent waiting for it to be assigned a timeslice. */ + struct blkg_stat group_wait_time; + /* time spent idling for this blkcg_gq */ + struct blkg_stat idle_time; + /* total time with empty current active q with other requests queued */ + struct blkg_stat empty_time; + /* fields after this shouldn't be cleared on stat reset */ + uint64_t start_group_wait_time; + uint64_t start_idle_time; + uint64_t start_empty_time; + uint16_t flags; +#endif /* BFQ_GROUP_IOSCHED_ENABLED && CONFIG_DEBUG_BLK_CGROUP */ +}; + +#ifdef BFQ_GROUP_IOSCHED_ENABLED +/* + * struct bfq_group_data - per-blkcg storage for the blkio subsystem. + * + * @ps: @blkcg_policy_storage that this structure inherits + * @weight: weight of the bfq_group + */ +struct bfq_group_data { + /* must be the first member */ + struct blkcg_policy_data pd; + + unsigned int weight; +}; + +/** + * struct bfq_group - per (device, cgroup) data structure. + * @entity: schedulable entity to insert into the parent group sched_data. + * @sched_data: own sched_data, to contain child entities (they may be + * both bfq_queues and bfq_groups). + * @bfqd: the bfq_data for the device this group acts upon. + * @async_bfqq: array of async queues for all the tasks belonging to + * the group, one queue per ioprio value per ioprio_class, + * except for the idle class that has only one queue. + * @async_idle_bfqq: async queue for the idle class (ioprio is ignored). + * @my_entity: pointer to @entity, %NULL for the toplevel group; used + * to avoid too many special cases during group creation/ + * migration. + * @active_entities: number of active entities belonging to the group; + * unused for the root group. Used to know whether there + * are groups with more than one active @bfq_entity + * (see the comments to the function + * bfq_bfqq_may_idle()). + * @rq_pos_tree: rbtree sorted by next_request position, used when + * determining if two or more queues have interleaving + * requests (see bfq_find_close_cooperator()). + * + * Each (device, cgroup) pair has its own bfq_group, i.e., for each cgroup + * there is a set of bfq_groups, each one collecting the lower-level + * entities belonging to the group that are acting on the same device. + * + * Locking works as follows: + * o @bfqd is protected by the queue lock, RCU is used to access it + * from the readers. + * o All the other fields are protected by the @bfqd queue lock. + */ +struct bfq_group { + /* must be the first member */ + struct blkg_policy_data pd; + + struct bfq_entity entity; + struct bfq_sched_data sched_data; + + void *bfqd; + + struct bfq_queue *async_bfqq[2][IOPRIO_BE_NR]; + struct bfq_queue *async_idle_bfqq; + + struct bfq_entity *my_entity; + + int active_entities; + + struct rb_root rq_pos_tree; + + struct bfqg_stats stats; +}; + +#else +struct bfq_group { + struct bfq_sched_data sched_data; + + struct bfq_queue *async_bfqq[2][IOPRIO_BE_NR]; + struct bfq_queue *async_idle_bfqq; + + struct rb_root rq_pos_tree; +}; +#endif + +static struct bfq_queue *bfq_entity_to_bfqq(struct bfq_entity *entity); + +static unsigned int bfq_class_idx(struct bfq_entity *entity) +{ + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + + return bfqq ? bfqq->ioprio_class - 1 : + BFQ_DEFAULT_GRP_CLASS - 1; +} + +static struct bfq_service_tree * +bfq_entity_service_tree(struct bfq_entity *entity) +{ + struct bfq_sched_data *sched_data = entity->sched_data; + struct bfq_queue *bfqq = bfq_entity_to_bfqq(entity); + unsigned int idx = bfq_class_idx(entity); + + BUG_ON(idx >= BFQ_IOPRIO_CLASSES); + BUG_ON(sched_data == NULL); + + if (bfqq) + bfq_log_bfqq(bfqq->bfqd, bfqq, + "%p %d", + sched_data->service_tree + idx, idx); +#ifdef BFQ_GROUP_IOSCHED_ENABLED + else { + struct bfq_group *bfqg = + container_of(entity, struct bfq_group, entity); + + bfq_log_bfqg((struct bfq_data *)bfqg->bfqd, bfqg, + "%p %d", + sched_data->service_tree + idx, idx); + } +#endif + return sched_data->service_tree + idx; +} + +static struct bfq_queue *bic_to_bfqq(struct bfq_io_cq *bic, bool is_sync) +{ + return bic->bfqq[is_sync]; +} + +static void bic_set_bfqq(struct bfq_io_cq *bic, struct bfq_queue *bfqq, + bool is_sync) +{ + bic->bfqq[is_sync] = bfqq; +} + +static struct bfq_data *bic_to_bfqd(struct bfq_io_cq *bic) +{ + return bic->icq.q->elevator->elevator_data; +} + +#ifdef BFQ_GROUP_IOSCHED_ENABLED + +static struct bfq_group *bfq_bfqq_to_bfqg(struct bfq_queue *bfqq) +{ + struct bfq_entity *group_entity = bfqq->entity.parent; + + if (!group_entity) + group_entity = &bfqq->bfqd->root_group->entity; + + return container_of(group_entity, struct bfq_group, entity); +} + +#else + +static struct bfq_group *bfq_bfqq_to_bfqg(struct bfq_queue *bfqq) +{ + return bfqq->bfqd->root_group; +} + +#endif + +static void bfq_check_ioprio_change(struct bfq_io_cq *bic, struct bio *bio); +static void bfq_put_queue(struct bfq_queue *bfqq); +static void bfq_dispatch_insert(struct request_queue *q, struct request *rq); +static struct bfq_queue *bfq_get_queue(struct bfq_data *bfqd, + struct bio *bio, bool is_sync, + struct bfq_io_cq *bic); +static void bfq_end_wr_async_queues(struct bfq_data *bfqd, + struct bfq_group *bfqg); +#ifdef BFQ_GROUP_IOSCHED_ENABLED +static void bfq_put_async_queues(struct bfq_data *bfqd, struct bfq_group *bfqg); +#endif +static void bfq_exit_bfqq(struct bfq_data *bfqd, struct bfq_queue *bfqq); + +#endif /* _BFQ_H */ diff --git a/block/elevator.c b/block/elevator.c index fa828b5bfd4..10c08576bb8 100644 --- a/block/elevator.c +++ b/block/elevator.c @@ -994,7 +994,13 @@ int elevator_init_mq(struct request_queue *q) if (unlikely(q->elevator)) goto out_unlock; +#if defined(CONFIG_PCK_INTERACTIVE) && defined(CONFIG_MQ_IOSCHED_BFQ) + e = elevator_get(q, "bfq-mq", false); +#elif defined(CONFIG_PCK_INTERACTIVE) && defined(CONFIG_IOSCHED_BFQ) + e = elevator_get(q, "bfq", false); +#else e = elevator_get(q, "mq-deadline", false); +#endif if (!e) goto out_unlock; diff --git a/drivers/block/loop.c b/drivers/block/loop.c index 4cb1d1be3cf..5678bf8e002 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -741,6 +741,24 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev, return error; } +/* + * for AUFS + * no get/put for file. + */ +struct file *loop_backing_file(struct super_block *sb) +{ + struct file *ret; + struct loop_device *l; + + ret = NULL; + if (MAJOR(sb->s_dev) == LOOP_MAJOR) { + l = sb->s_bdev->bd_disk->private_data; + ret = l->lo_backing_file; + } + return ret; +} +EXPORT_SYMBOL_GPL(loop_backing_file); + /* loop sysfs attributes */ static ssize_t loop_attr_show(struct device *dev, char *page, diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c index f20f20a77d4..8afd78141d6 100644 --- a/drivers/cpufreq/cpufreq_conservative.c +++ b/drivers/cpufreq/cpufreq_conservative.c @@ -31,8 +31,13 @@ struct cs_dbs_tuners { }; /* Conservative governor macros */ -#define DEF_FREQUENCY_UP_THRESHOLD (80) -#define DEF_FREQUENCY_DOWN_THRESHOLD (20) +#ifdef CONFIG_SCHED_PDS + #define DEF_FREQUENCY_UP_THRESHOLD (63) + #define DEF_FREQUENCY_DOWN_THRESHOLD (26) +#else + #define DEF_FREQUENCY_UP_THRESHOLD (80) + #define DEF_FREQUENCY_DOWN_THRESHOLD (20) +#endif #define DEF_FREQUENCY_STEP (5) #define DEF_SAMPLING_DOWN_FACTOR (1) #define MAX_SAMPLING_DOWN_FACTOR (10) diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c index 6b423eebfd5..df638bad053 100644 --- a/drivers/cpufreq/cpufreq_ondemand.c +++ b/drivers/cpufreq/cpufreq_ondemand.c @@ -21,10 +21,21 @@ #include "cpufreq_ondemand.h" /* On-demand governor macros */ -#define DEF_FREQUENCY_UP_THRESHOLD (80) +#if defined(CONFIG_PCK_INTERACTIVE) && defined(CONFIG_SCHED_PDS) + #define DEF_FREQUENCY_UP_THRESHOLD (45) + #define MICRO_FREQUENCY_UP_THRESHOLD (45) +#elif defined(CONFIG_SCHED_PDS) + #define DEF_FREQUENCY_UP_THRESHOLD (63) + #define MICRO_FREQUENCY_UP_THRESHOLD (95) +#elif defined(CONFIG_PCK_INTERACTIVE) + #define DEF_FREQUENCY_UP_THRESHOLD (80) + #define MICRO_FREQUENCY_UP_THRESHOLD (85) +#else + #define DEF_FREQUENCY_UP_THRESHOLD (80) + #define MICRO_FREQUENCY_UP_THRESHOLD (95) +#endif #define DEF_SAMPLING_DOWN_FACTOR (1) #define MAX_SAMPLING_DOWN_FACTOR (100000) -#define MICRO_FREQUENCY_UP_THRESHOLD (95) #define MICRO_FREQUENCY_MIN_SAMPLE_RATE (10000) #define MIN_FREQUENCY_UP_THRESHOLD (1) #define MAX_FREQUENCY_UP_THRESHOLD (100) diff --git a/drivers/gpu/drm/amd/display/dc/basics/logger.c b/drivers/gpu/drm/amd/display/dc/basics/logger.c index 0866874ae8c..61a42862c9c 100644 --- a/drivers/gpu/drm/amd/display/dc/basics/logger.c +++ b/drivers/gpu/drm/amd/display/dc/basics/logger.c @@ -346,7 +346,7 @@ void dm_logger_append_va( if (size < LOG_MAX_LINE_SIZE - 1) { append_entry(entry, buffer, size); } else { - append_entry(entry, "LOG_ERROR, line too long\n", 27); + append_entry(entry, "LOG_ERROR, line too long\n", 25); } } } diff --git a/drivers/gpu/drm/i915/intel_dp_link_training.c b/drivers/gpu/drm/i915/intel_dp_link_training.c index 3fcaa98b905..667397541f1 100644 --- a/drivers/gpu/drm/i915/intel_dp_link_training.c +++ b/drivers/gpu/drm/i915/intel_dp_link_training.c @@ -335,22 +335,14 @@ intel_dp_start_link_train(struct intel_dp *intel_dp) return; failure_handling: - /* Dont fallback and prune modes if its eDP */ - if (!intel_dp_is_edp(intel_dp)) { - DRM_DEBUG_KMS("[CONNECTOR:%d:%s] Link Training failed at link rate = %d, lane count = %d", - intel_connector->base.base.id, - intel_connector->base.name, - intel_dp->link_rate, intel_dp->lane_count); - if (!intel_dp_get_link_train_fallback_values(intel_dp, - intel_dp->link_rate, - intel_dp->lane_count)) - /* Schedule a Hotplug Uevent to userspace to start modeset */ - schedule_work(&intel_connector->modeset_retry_work); - } else { - DRM_ERROR("[CONNECTOR:%d:%s] Link Training failed at link rate = %d, lane count = %d", - intel_connector->base.base.id, - intel_connector->base.name, - intel_dp->link_rate, intel_dp->lane_count); - } + DRM_DEBUG_KMS("[CONNECTOR:%d:%s] Link Training failed at link rate = %d, lane count = %d", + intel_connector->base.base.id, + intel_connector->base.name, + intel_dp->link_rate, intel_dp->lane_count); + if (!intel_dp_get_link_train_fallback_values(intel_dp, + intel_dp->link_rate, + intel_dp->lane_count)) + /* Schedule a Hotplug Uevent to userspace to start modeset */ + schedule_work(&intel_connector->modeset_retry_work); return; } diff --git a/drivers/gpu/drm/i915/intel_lspcon.c b/drivers/gpu/drm/i915/intel_lspcon.c index 8ae8f42f430..6b6758419fb 100644 --- a/drivers/gpu/drm/i915/intel_lspcon.c +++ b/drivers/gpu/drm/i915/intel_lspcon.c @@ -74,7 +74,7 @@ static enum drm_lspcon_mode lspcon_wait_mode(struct intel_lspcon *lspcon, DRM_DEBUG_KMS("Waiting for LSPCON mode %s to settle\n", lspcon_mode_name(mode)); - wait_for((current_mode = lspcon_get_current_mode(lspcon)) == mode, 100); + wait_for((current_mode = lspcon_get_current_mode(lspcon)) == mode, 400); if (current_mode != mode) DRM_ERROR("LSPCON mode hasn't settled\n"); diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c index 4f32c4062fb..c0bf039e1b4 100644 --- a/drivers/infiniband/core/addr.c +++ b/drivers/infiniband/core/addr.c @@ -721,6 +721,7 @@ int rdma_addr_find_l2_eth_by_grh(const union ib_gid *sgid, struct sockaddr _sockaddr; struct sockaddr_in _sockaddr_in; struct sockaddr_in6 _sockaddr_in6; + struct sockaddr_ib _sockaddr_ib; } sgid_addr, dgid_addr; int ret; diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c index 55d33500d55..744e84228a1 100644 --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -1338,7 +1338,9 @@ static int set_input_params(struct psmouse *psmouse, if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit); - } + } else if (SYN_CAP_CLICKPAD2BTN(info->ext_cap_0c) || + SYN_CAP_CLICKPAD2BTN2(info->ext_cap_0c)) + __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); return 0; } diff --git a/drivers/input/mouse/synaptics.h b/drivers/input/mouse/synaptics.h index fc00e005c61..4cfbeec3ae4 100644 --- a/drivers/input/mouse/synaptics.h +++ b/drivers/input/mouse/synaptics.h @@ -86,6 +86,7 @@ */ #define SYN_CAP_CLICKPAD(ex0c) ((ex0c) & BIT(20)) /* 1-button ClickPad */ #define SYN_CAP_CLICKPAD2BTN(ex0c) ((ex0c) & BIT(8)) /* 2-button ClickPad */ +#define SYN_CAP_CLICKPAD2BTN2(ex0c) ((ex0c) & BIT(21)) /* 2-button ClickPad */ #define SYN_CAP_MAX_DIMENSIONS(ex0c) ((ex0c) & BIT(17)) #define SYN_CAP_MIN_DIMENSIONS(ex0c) ((ex0c) & BIT(13)) #define SYN_CAP_ADV_GESTURE(ex0c) ((ex0c) & BIT(19)) diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index 77f105a17d9..c7863dc030a 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -2134,7 +2134,7 @@ static int mxt_initialize(struct mxt_data *data) if (error) return error; - error = reject_firmware_nowait(THIS_MODULE, true, MXT_CFG_NAME, + error = request_firmware_nowait(THIS_MODULE, true, MXT_CFG_NAME, &client->dev, GFP_KERNEL, data, mxt_config_cb); if (error) { diff --git a/drivers/macintosh/Kconfig b/drivers/macintosh/Kconfig index 97a420c11ee..c8621e9b2e4 100644 --- a/drivers/macintosh/Kconfig +++ b/drivers/macintosh/Kconfig @@ -159,6 +159,13 @@ config INPUT_ADBHID If unsure, say Y. +config ADB_TRACKPAD_ABSOLUTE + bool "Enable absolute mode for adb trackpads" + depends on INPUT_ADBHID + help + Enable absolute mode in adb-base trackpads. This feature adds + compatibility with synaptics Xorg / Xfree drivers. + config MAC_EMUMOUSEBTN tristate "Support for mouse button 2+3 emulation" depends on SYSCTL && INPUT diff --git a/drivers/macintosh/adbhid.c b/drivers/macintosh/adbhid.c index a261892c03b..a85192de840 100644 --- a/drivers/macintosh/adbhid.c +++ b/drivers/macintosh/adbhid.c @@ -262,6 +262,15 @@ static struct adb_ids buttons_ids; #define ADBMOUSE_MS_A3 8 /* Mouse systems A3 trackball (handler 3) */ #define ADBMOUSE_MACALLY2 9 /* MacAlly 2-button mouse */ +#ifdef CONFIG_ADB_TRACKPAD_ABSOLUTE +#define ABS_XMIN 310 +#define ABS_XMAX 1700 +#define ABS_YMIN 200 +#define ABS_YMAX 1000 +#define ABS_ZMIN 0 +#define ABS_ZMAX 55 +#endif + static void adbhid_keyboard_input(unsigned char *data, int nb, int apoll) { @@ -405,6 +414,9 @@ static void adbhid_mouse_input(unsigned char *data, int nb, int autopoll) { int id = (data[0] >> 4) & 0x0f; +#ifdef CONFIG_ADB_TRACKPAD_ABSOLUTE + int btn = 0; int x_axis = 0; int y_axis = 0; int z_axis = 0; +#endif if (!adbhid[id]) { pr_err("ADB HID on ID %d not yet registered\n", id); @@ -436,6 +448,17 @@ adbhid_mouse_input(unsigned char *data, int nb, int autopoll) high bits of y-axis motion. XY is additional high bits of x-axis motion. + For ADB Absolute motion protocol the data array will contain the + following values: + + BITS COMMENTS + data[0] = dddd 1100 ADB command: Talk, register 0, for device dddd. + data[1] = byyy yyyy Left button and y-axis motion. + data[2] = bxxx xxxx Second button and x-axis motion. + data[3] = 1yyy 1xxx Half bits of y-axis and x-axis motion. + data[4] = 1yyy 1xxx Higher bits of y-axis and x-axis motion. + data[5] = 1zzz 1zzz Higher and lower bits of z-pressure. + MacAlly 2-button mouse protocol. For MacAlly 2-button mouse protocol the data array will contain the @@ -458,8 +481,17 @@ adbhid_mouse_input(unsigned char *data, int nb, int autopoll) switch (adbhid[id]->mouse_kind) { case ADBMOUSE_TRACKPAD: +#ifdef CONFIG_ADB_TRACKPAD_ABSOLUTE + x_axis = (data[2] & 0x7f) | ((data[3] & 0x07) << 7) | + ((data[4] & 0x07) << 10); + y_axis = (data[1] & 0x7f) | ((data[3] & 0x70) << 3) | + ((data[4] & 0x70) << 6); + z_axis = (data[5] & 0x07) | ((data[5] & 0x70) >> 1); + btn = (!(data[1] >> 7)) & 1; +#else data[1] = (data[1] & 0x7f) | ((data[1] & data[2]) & 0x80); data[2] = data[2] | 0x80; +#endif break; case ADBMOUSE_MICROSPEED: data[1] = (data[1] & 0x7f) | ((data[3] & 0x01) << 7); @@ -485,17 +517,39 @@ adbhid_mouse_input(unsigned char *data, int nb, int autopoll) break; } - input_report_key(adbhid[id]->input, BTN_LEFT, !((data[1] >> 7) & 1)); - input_report_key(adbhid[id]->input, BTN_MIDDLE, !((data[2] >> 7) & 1)); +#ifdef CONFIG_ADB_TRACKPAD_ABSOLUTE + if ( adbhid[id]->mouse_kind == ADBMOUSE_TRACKPAD ) { - if (nb >= 4 && adbhid[id]->mouse_kind != ADBMOUSE_TRACKPAD) - input_report_key(adbhid[id]->input, BTN_RIGHT, !((data[3] >> 7) & 1)); + if(z_axis > 30) input_report_key(adbhid[id]->input, BTN_TOUCH, 1); + if(z_axis < 25) input_report_key(adbhid[id]->input, BTN_TOUCH, 0); - input_report_rel(adbhid[id]->input, REL_X, - ((data[2]&0x7f) < 64 ? (data[2]&0x7f) : (data[2]&0x7f)-128 )); - input_report_rel(adbhid[id]->input, REL_Y, - ((data[1]&0x7f) < 64 ? (data[1]&0x7f) : (data[1]&0x7f)-128 )); + if(z_axis > 0){ + input_report_abs(adbhid[id]->input, ABS_X, x_axis); + input_report_abs(adbhid[id]->input, ABS_Y, y_axis); + input_report_key(adbhid[id]->input, BTN_TOOL_FINGER, 1); + input_report_key(adbhid[id]->input, ABS_TOOL_WIDTH, 5); + } else { + input_report_key(adbhid[id]->input, BTN_TOOL_FINGER, 0); + input_report_key(adbhid[id]->input, ABS_TOOL_WIDTH, 0); + } + + input_report_abs(adbhid[id]->input, ABS_PRESSURE, z_axis); + input_report_key(adbhid[id]->input, BTN_LEFT, btn); + } else { +#endif + input_report_key(adbhid[id]->input, BTN_LEFT, !((data[1] >> 7) & 1)); + input_report_key(adbhid[id]->input, BTN_MIDDLE, !((data[2] >> 7) & 1)); + + if (nb >= 4 && adbhid[id]->mouse_kind != ADBMOUSE_TRACKPAD) + input_report_key(adbhid[id]->input, BTN_RIGHT, !((data[3] >> 7) & 1)); + input_report_rel(adbhid[id]->input, REL_X, + ((data[2]&0x7f) < 64 ? (data[2]&0x7f) : (data[2]&0x7f)-128 )); + input_report_rel(adbhid[id]->input, REL_Y, + ((data[1]&0x7f) < 64 ? (data[1]&0x7f) : (data[1]&0x7f)-128 )); +#ifdef CONFIG_ADB_TRACKPAD_ABSOLUTE + } +#endif input_sync(adbhid[id]->input); } @@ -849,6 +903,15 @@ adbhid_input_register(int id, int default_id, int original_handler_id, input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); +#ifdef CONFIG_ADB_TRACKPAD_ABSOLUTE + set_bit(EV_ABS, input_dev->evbit); + input_set_abs_params(input_dev, ABS_X, ABS_XMIN, ABS_XMAX, 0, 0); + input_set_abs_params(input_dev, ABS_Y, ABS_YMIN, ABS_YMAX, 0, 0); + input_set_abs_params(input_dev, ABS_PRESSURE, ABS_ZMIN, ABS_ZMAX, 0, 0); + set_bit(BTN_TOUCH, input_dev->keybit); + set_bit(BTN_TOOL_FINGER, input_dev->keybit); + set_bit(ABS_TOOL_WIDTH, input_dev->absbit); +#endif break; case ADB_MISC: @@ -1132,7 +1195,11 @@ init_trackpad(int id) r1_buffer[3], r1_buffer[4], r1_buffer[5], +#ifdef CONFIG_ADB_TRACKPAD_ABSOLUTE + 0x00, /* Enable absolute mode */ +#else 0x03, /*r1_buffer[6],*/ +#endif r1_buffer[7]); /* Without this flush, the trackpad may be locked up */ diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index ac4d4883041..b272132ac74 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -573,9 +573,28 @@ config THINKPAD_ACPI_HOTKEY_POLL If you are not sure, say Y here. The driver enables polling only if it is strictly necessary to do so. +config THINKPAD_EC + tristate + ---help--- + This is a low-level driver for accessing the ThinkPad H8S embedded + controller over the LPC bus (not to be confused with the ACPI Embedded + Controller interface). + +config TP_SMAPI + tristate "ThinkPad SMAPI Support" + select THINKPAD_EC + default n + help + This adds SMAPI support on Lenovo/IBM ThinkPads, for features such + as battery charging control. For more information about this driver + see . + + If you have a Lenovo/IBM ThinkPad laptop, say Y or M here. + config SENSORS_HDAPS tristate "Thinkpad Hard Drive Active Protection System (hdaps)" depends on INPUT + select THINKPAD_EC select INPUT_POLLDEV help This driver provides support for the IBM Hard Drive Active Protection diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile index 2ba6cb79533..399f8b88646 100644 --- a/drivers/platform/x86/Makefile +++ b/drivers/platform/x86/Makefile @@ -35,6 +35,8 @@ obj-$(CONFIG_TC1100_WMI) += tc1100-wmi.o obj-$(CONFIG_SONY_LAPTOP) += sony-laptop.o obj-$(CONFIG_IDEAPAD_LAPTOP) += ideapad-laptop.o obj-$(CONFIG_THINKPAD_ACPI) += thinkpad_acpi.o +obj-$(CONFIG_THINKPAD_EC) += thinkpad_ec.o +obj-$(CONFIG_TP_SMAPI) += tp_smapi.o obj-$(CONFIG_SENSORS_HDAPS) += hdaps.o obj-$(CONFIG_FUJITSU_LAPTOP) += fujitsu-laptop.o obj-$(CONFIG_FUJITSU_TABLET) += fujitsu-tablet.o diff --git a/drivers/platform/x86/hdaps.c b/drivers/platform/x86/hdaps.c index c26baf77938..1814614f240 100644 --- a/drivers/platform/x86/hdaps.c +++ b/drivers/platform/x86/hdaps.c @@ -2,7 +2,7 @@ * hdaps.c - driver for IBM's Hard Drive Active Protection System * * Copyright (C) 2005 Robert Love - * Copyright (C) 2005 Jesper Juhl + * Copyright (C) 2005 Jesper Juhl * * The HardDisk Active Protection System (hdaps) is present in IBM ThinkPads * starting with the R40, T41, and X40. It provides a basic two-axis @@ -30,266 +30,384 @@ #include #include -#include +#include #include -#include #include #include #include #include -#include - -#define HDAPS_LOW_PORT 0x1600 /* first port used by hdaps */ -#define HDAPS_NR_PORTS 0x30 /* number of ports: 0x1600 - 0x162f */ - -#define HDAPS_PORT_STATE 0x1611 /* device state */ -#define HDAPS_PORT_YPOS 0x1612 /* y-axis position */ -#define HDAPS_PORT_XPOS 0x1614 /* x-axis position */ -#define HDAPS_PORT_TEMP1 0x1616 /* device temperature, in Celsius */ -#define HDAPS_PORT_YVAR 0x1617 /* y-axis variance (what is this?) */ -#define HDAPS_PORT_XVAR 0x1619 /* x-axis variance (what is this?) */ -#define HDAPS_PORT_TEMP2 0x161b /* device temperature (again?) */ -#define HDAPS_PORT_UNKNOWN 0x161c /* what is this? */ -#define HDAPS_PORT_KMACT 0x161d /* keyboard or mouse activity */ - -#define STATE_FRESH 0x50 /* accelerometer data is fresh */ +#include +#include +#include + +/* Embedded controller accelerometer read command and its result: */ +static const struct thinkpad_ec_row ec_accel_args = + { .mask = 0x0001, .val = {0x11} }; +#define EC_ACCEL_IDX_READOUTS 0x1 /* readouts included in this read */ + /* First readout, if READOUTS>=1: */ +#define EC_ACCEL_IDX_YPOS1 0x2 /* y-axis position word */ +#define EC_ACCEL_IDX_XPOS1 0x4 /* x-axis position word */ +#define EC_ACCEL_IDX_TEMP1 0x6 /* device temperature in Celsius */ + /* Second readout, if READOUTS>=2: */ +#define EC_ACCEL_IDX_XPOS2 0x7 /* y-axis position word */ +#define EC_ACCEL_IDX_YPOS2 0x9 /* x-axis position word */ +#define EC_ACCEL_IDX_TEMP2 0xb /* device temperature in Celsius */ +#define EC_ACCEL_IDX_QUEUED 0xc /* Number of queued readouts left */ +#define EC_ACCEL_IDX_KMACT 0xd /* keyboard or mouse activity */ +#define EC_ACCEL_IDX_RETVAL 0xf /* command return value, good=0x00 */ #define KEYBD_MASK 0x20 /* set if keyboard activity */ #define MOUSE_MASK 0x40 /* set if mouse activity */ -#define KEYBD_ISSET(n) (!! (n & KEYBD_MASK)) /* keyboard used? */ -#define MOUSE_ISSET(n) (!! (n & MOUSE_MASK)) /* mouse used? */ -#define INIT_TIMEOUT_MSECS 4000 /* wait up to 4s for device init ... */ -#define INIT_WAIT_MSECS 200 /* ... in 200ms increments */ +#define READ_TIMEOUT_MSECS 100 /* wait this long for device read */ +#define RETRY_MSECS 3 /* retry delay */ -#define HDAPS_POLL_INTERVAL 50 /* poll for input every 1/20s (50 ms)*/ #define HDAPS_INPUT_FUZZ 4 /* input event threshold */ #define HDAPS_INPUT_FLAT 4 - -#define HDAPS_X_AXIS (1 << 0) -#define HDAPS_Y_AXIS (1 << 1) -#define HDAPS_BOTH_AXES (HDAPS_X_AXIS | HDAPS_Y_AXIS) - +#define KMACT_REMEMBER_PERIOD (HZ/10) /* keyboard/mouse persistence */ + +/* Input IDs */ +#define HDAPS_INPUT_VENDOR PCI_VENDOR_ID_IBM +#define HDAPS_INPUT_PRODUCT 0x5054 /* "TP", shared with thinkpad_acpi */ +#define HDAPS_INPUT_JS_VERSION 0x6801 /* Joystick emulation input device */ +#define HDAPS_INPUT_RAW_VERSION 0x4801 /* Raw accelerometer input device */ + +/* Axis orientation. */ +/* The unnatural bit-representation of inversions is for backward + * compatibility with the"invert=1" module parameter. */ +#define HDAPS_ORIENT_INVERT_XY 0x01 /* Invert both X and Y axes. */ +#define HDAPS_ORIENT_INVERT_X 0x02 /* Invert the X axis (uninvert if + * already inverted by INVERT_XY). */ +#define HDAPS_ORIENT_SWAP 0x04 /* Swap the axes. The swap occurs + * before inverting X or Y. */ +#define HDAPS_ORIENT_MAX 0x07 +#define HDAPS_ORIENT_UNDEFINED 0xFF /* Placeholder during initialization */ +#define HDAPS_ORIENT_INVERT_Y (HDAPS_ORIENT_INVERT_XY | HDAPS_ORIENT_INVERT_X) + +static struct timer_list hdaps_timer; static struct platform_device *pdev; -static struct input_polled_dev *hdaps_idev; -static unsigned int hdaps_invert; -static u8 km_activity; -static int rest_x; -static int rest_y; - -static DEFINE_MUTEX(hdaps_mtx); - -/* - * __get_latch - Get the value from a given port. Callers must hold hdaps_mtx. - */ -static inline u8 __get_latch(u16 port) +static struct input_dev *hdaps_idev; /* joystick-like device with fuzz */ +static struct input_dev *hdaps_idev_raw; /* raw hdaps sensor readouts */ +static unsigned int hdaps_invert = HDAPS_ORIENT_UNDEFINED; +static int needs_calibration; + +/* Configuration: */ +static int sampling_rate = 50; /* Sampling rate */ +static int oversampling_ratio = 5; /* Ratio between our sampling rate and + * EC accelerometer sampling rate */ +static int running_avg_filter_order = 2; /* EC running average filter order */ + +/* Latest state readout: */ +static int pos_x, pos_y; /* position */ +static int temperature; /* temperature */ +static int stale_readout = 1; /* last read invalid */ +static int rest_x, rest_y; /* calibrated rest position */ + +/* Last time we saw keyboard and mouse activity: */ +static u64 last_keyboard_jiffies = INITIAL_JIFFIES; +static u64 last_mouse_jiffies = INITIAL_JIFFIES; +static u64 last_update_jiffies = INITIAL_JIFFIES; + +/* input device use count */ +static int hdaps_users; +static DEFINE_MUTEX(hdaps_users_mtx); + +/* Some models require an axis transformation to the standard representation */ +static void transform_axes(int *x, int *y) { - return inb(port) & 0xff; + if (hdaps_invert & HDAPS_ORIENT_SWAP) { + int z; + z = *x; + *x = *y; + *y = z; + } + if (hdaps_invert & HDAPS_ORIENT_INVERT_XY) { + *x = -*x; + *y = -*y; + } + if (hdaps_invert & HDAPS_ORIENT_INVERT_X) + *x = -*x; } -/* - * __check_latch - Check a port latch for a given value. Returns zero if the - * port contains the given value. Callers must hold hdaps_mtx. +/** + * __hdaps_update - query current state, with locks already acquired + * @fast: if nonzero, do one quick attempt without retries. + * + * Query current accelerometer state and update global state variables. + * Also prefetches the next query. Caller must hold controller lock. */ -static inline int __check_latch(u16 port, u8 val) +static int __hdaps_update(int fast) { - if (__get_latch(port) == val) - return 0; - return -EINVAL; -} + /* Read data: */ + struct thinkpad_ec_row data; + int ret; -/* - * __wait_latch - Wait up to 100us for a port latch to get a certain value, - * returning zero if the value is obtained. Callers must hold hdaps_mtx. - */ -static int __wait_latch(u16 port, u8 val) -{ - unsigned int i; + data.mask = (1 << EC_ACCEL_IDX_READOUTS) | (1 << EC_ACCEL_IDX_KMACT) | + (3 << EC_ACCEL_IDX_YPOS1) | (3 << EC_ACCEL_IDX_XPOS1) | + (1 << EC_ACCEL_IDX_TEMP1) | (1 << EC_ACCEL_IDX_RETVAL); + if (fast) + ret = thinkpad_ec_try_read_row(&ec_accel_args, &data); + else + ret = thinkpad_ec_read_row(&ec_accel_args, &data); + thinkpad_ec_prefetch_row(&ec_accel_args); /* Prefetch even if error */ + if (ret) + return ret; - for (i = 0; i < 20; i++) { - if (!__check_latch(port, val)) - return 0; - udelay(5); + /* Check status: */ + if (data.val[EC_ACCEL_IDX_RETVAL] != 0x00) { + pr_warn("read RETVAL=0x%02x\n", + data.val[EC_ACCEL_IDX_RETVAL]); + return -EIO; } - return -EIO; + if (data.val[EC_ACCEL_IDX_READOUTS] < 1) + return -EBUSY; /* no pending readout, try again later */ + + /* Parse position data: */ + pos_x = *(s16 *)(data.val+EC_ACCEL_IDX_XPOS1); + pos_y = *(s16 *)(data.val+EC_ACCEL_IDX_YPOS1); + transform_axes(&pos_x, &pos_y); + + /* Keyboard and mouse activity status is cleared as soon as it's read, + * so applications will eat each other's events. Thus we remember any + * event for KMACT_REMEMBER_PERIOD jiffies. + */ + if (data.val[EC_ACCEL_IDX_KMACT] & KEYBD_MASK) + last_keyboard_jiffies = get_jiffies_64(); + if (data.val[EC_ACCEL_IDX_KMACT] & MOUSE_MASK) + last_mouse_jiffies = get_jiffies_64(); + + temperature = data.val[EC_ACCEL_IDX_TEMP1]; + + last_update_jiffies = get_jiffies_64(); + stale_readout = 0; + if (needs_calibration) { + rest_x = pos_x; + rest_y = pos_y; + needs_calibration = 0; + } + + return 0; } -/* - * __device_refresh - request a refresh from the accelerometer. Does not wait - * for refresh to complete. Callers must hold hdaps_mtx. +/** + * hdaps_update - acquire locks and query current state + * + * Query current accelerometer state and update global state variables. + * Also prefetches the next query. + * Retries until timeout if the accelerometer is not in ready status (common). + * Does its own locking. */ -static void __device_refresh(void) +static int hdaps_update(void) { - udelay(200); - if (inb(0x1604) != STATE_FRESH) { - outb(0x11, 0x1610); - outb(0x01, 0x161f); + u64 age = get_jiffies_64() - last_update_jiffies; + int total, ret; + + if (!stale_readout && age < (9*HZ)/(10*sampling_rate)) + return 0; /* already updated recently */ + for (total = 0; total < READ_TIMEOUT_MSECS; total += RETRY_MSECS) { + ret = thinkpad_ec_lock(); + if (ret) + return ret; + ret = __hdaps_update(0); + thinkpad_ec_unlock(); + + if (!ret) + return 0; + if (ret != -EBUSY) + break; + msleep(RETRY_MSECS); } + return ret; } -/* - * __device_refresh_sync - request a synchronous refresh from the - * accelerometer. We wait for the refresh to complete. Returns zero if - * successful and nonzero on error. Callers must hold hdaps_mtx. +/** + * hdaps_set_power - enable or disable power to the accelerometer. + * Returns zero on success and negative error code on failure. Can sleep. */ -static int __device_refresh_sync(void) +static int hdaps_set_power(int on) { - __device_refresh(); - return __wait_latch(0x1604, STATE_FRESH); + struct thinkpad_ec_row args = + { .mask = 0x0003, .val = {0x14, on?0x01:0x00} }; + struct thinkpad_ec_row data = { .mask = 0x8000 }; + int ret = thinkpad_ec_read_row(&args, &data); + if (ret) + return ret; + if (data.val[0xF] != 0x00) + return -EIO; + return 0; } -/* - * __device_complete - indicate to the accelerometer that we are done reading - * data, and then initiate an async refresh. Callers must hold hdaps_mtx. +/** + * hdaps_set_ec_config - set accelerometer parameters. + * @ec_rate: embedded controller sampling rate + * @order: embedded controller running average filter order + * (Normally we have @ec_rate = sampling_rate * oversampling_ratio.) + * Returns zero on success and negative error code on failure. Can sleep. */ -static inline void __device_complete(void) +static int hdaps_set_ec_config(int ec_rate, int order) { - inb(0x161f); - inb(0x1604); - __device_refresh(); + struct thinkpad_ec_row args = { .mask = 0x000F, + .val = {0x10, (u8)ec_rate, (u8)(ec_rate>>8), order} }; + struct thinkpad_ec_row data = { .mask = 0x8000 }; + int ret = thinkpad_ec_read_row(&args, &data); + pr_debug("setting ec_rate=%d, filter_order=%d\n", ec_rate, order); + if (ret) + return ret; + if (data.val[0xF] == 0x03) { + pr_warn("config param out of range\n"); + return -EINVAL; + } + if (data.val[0xF] == 0x06) { + pr_warn("config change already pending\n"); + return -EBUSY; + } + if (data.val[0xF] != 0x00) { + pr_warn("config change error, ret=%d\n", + data.val[0xF]); + return -EIO; + } + return 0; } -/* - * hdaps_readb_one - reads a byte from a single I/O port, placing the value in - * the given pointer. Returns zero on success or a negative error on failure. - * Can sleep. +/** + * hdaps_get_ec_config - get accelerometer parameters. + * @ec_rate: embedded controller sampling rate + * @order: embedded controller running average filter order + * Returns zero on success and negative error code on failure. Can sleep. */ -static int hdaps_readb_one(unsigned int port, u8 *val) +static int hdaps_get_ec_config(int *ec_rate, int *order) { - int ret; - - mutex_lock(&hdaps_mtx); - - /* do a sync refresh -- we need to be sure that we read fresh data */ - ret = __device_refresh_sync(); + const struct thinkpad_ec_row args = + { .mask = 0x0003, .val = {0x17, 0x82} }; + struct thinkpad_ec_row data = { .mask = 0x801F }; + int ret = thinkpad_ec_read_row(&args, &data); if (ret) - goto out; - - *val = inb(port); - __device_complete(); - -out: - mutex_unlock(&hdaps_mtx); - return ret; + return ret; + if (data.val[0xF] != 0x00) + return -EIO; + if (!(data.val[0x1] & 0x01)) + return -ENXIO; /* accelerometer polling not enabled */ + if (data.val[0x1] & 0x02) + return -EBUSY; /* config change in progress, retry later */ + *ec_rate = data.val[0x2] | ((int)(data.val[0x3]) << 8); + *order = data.val[0x4]; + return 0; } -/* __hdaps_read_pair - internal lockless helper for hdaps_read_pair(). */ -static int __hdaps_read_pair(unsigned int port1, unsigned int port2, - int *x, int *y) +/** + * hdaps_get_ec_mode - get EC accelerometer mode + * Returns zero on success and negative error code on failure. Can sleep. + */ +static int hdaps_get_ec_mode(u8 *mode) { - /* do a sync refresh -- we need to be sure that we read fresh data */ - if (__device_refresh_sync()) + const struct thinkpad_ec_row args = + { .mask = 0x0001, .val = {0x13} }; + struct thinkpad_ec_row data = { .mask = 0x8002 }; + int ret = thinkpad_ec_read_row(&args, &data); + if (ret) + return ret; + if (data.val[0xF] != 0x00) { + pr_warn("accelerometer not implemented (0x%02x)\n", + data.val[0xF]); return -EIO; - - *y = inw(port2); - *x = inw(port1); - km_activity = inb(HDAPS_PORT_KMACT); - __device_complete(); - - /* hdaps_invert is a bitvector to negate the axes */ - if (hdaps_invert & HDAPS_X_AXIS) - *x = -*x; - if (hdaps_invert & HDAPS_Y_AXIS) - *y = -*y; - + } + *mode = data.val[0x1]; return 0; } -/* - * hdaps_read_pair - reads the values from a pair of ports, placing the values - * in the given pointers. Returns zero on success. Can sleep. +/** + * hdaps_check_ec - checks something about the EC. + * Follows the clean-room spec for HDAPS; we don't know what it means. + * Returns zero on success and negative error code on failure. Can sleep. */ -static int hdaps_read_pair(unsigned int port1, unsigned int port2, - int *val1, int *val2) +static int hdaps_check_ec(void) { - int ret; - - mutex_lock(&hdaps_mtx); - ret = __hdaps_read_pair(port1, port2, val1, val2); - mutex_unlock(&hdaps_mtx); - - return ret; + const struct thinkpad_ec_row args = + { .mask = 0x0003, .val = {0x17, 0x81} }; + struct thinkpad_ec_row data = { .mask = 0x800E }; + int ret = thinkpad_ec_read_row(&args, &data); + if (ret) + return ret; + if (!((data.val[0x1] == 0x00 && data.val[0x2] == 0x60) || /* cleanroom spec */ + (data.val[0x1] == 0x01 && data.val[0x2] == 0x00)) || /* seen on T61 */ + data.val[0x3] != 0x00 || data.val[0xF] != 0x00) { + pr_warn("hdaps_check_ec: bad response (0x%x,0x%x,0x%x,0x%x)\n", + data.val[0x1], data.val[0x2], + data.val[0x3], data.val[0xF]); + return -EIO; + } + return 0; } -/* - * hdaps_device_init - initialize the accelerometer. Returns zero on success - * and negative error code on failure. Can sleep. +/** + * hdaps_device_init - initialize the accelerometer. + * + * Call several embedded controller functions to test and initialize the + * accelerometer. + * Returns zero on success and negative error code on failure. Can sleep. */ +#define FAILED_INIT(msg) pr_err("init failed at: %s\n", msg) static int hdaps_device_init(void) { - int total, ret = -ENXIO; + int ret; + u8 mode; - mutex_lock(&hdaps_mtx); + ret = thinkpad_ec_lock(); + if (ret) + return ret; - outb(0x13, 0x1610); - outb(0x01, 0x161f); - if (__wait_latch(0x161f, 0x00)) - goto out; + if (hdaps_get_ec_mode(&mode)) + { FAILED_INIT("hdaps_get_ec_mode failed"); goto bad; } - /* - * Most ThinkPads return 0x01. - * - * Others--namely the R50p, T41p, and T42p--return 0x03. These laptops - * have "inverted" axises. - * - * The 0x02 value occurs when the chip has been previously initialized. - */ - if (__check_latch(0x1611, 0x03) && - __check_latch(0x1611, 0x02) && - __check_latch(0x1611, 0x01)) - goto out; + pr_debug("initial mode latch is 0x%02x\n", mode); + if (mode == 0x00) + { FAILED_INIT("accelerometer not available"); goto bad; } - printk(KERN_DEBUG "hdaps: initial latch check good (0x%02x)\n", - __get_latch(0x1611)); + if (hdaps_check_ec()) + { FAILED_INIT("hdaps_check_ec failed"); goto bad; } - outb(0x17, 0x1610); - outb(0x81, 0x1611); - outb(0x01, 0x161f); - if (__wait_latch(0x161f, 0x00)) - goto out; - if (__wait_latch(0x1611, 0x00)) - goto out; - if (__wait_latch(0x1612, 0x60)) - goto out; - if (__wait_latch(0x1613, 0x00)) - goto out; - outb(0x14, 0x1610); - outb(0x01, 0x1611); - outb(0x01, 0x161f); - if (__wait_latch(0x161f, 0x00)) - goto out; - outb(0x10, 0x1610); - outb(0xc8, 0x1611); - outb(0x00, 0x1612); - outb(0x02, 0x1613); - outb(0x01, 0x161f); - if (__wait_latch(0x161f, 0x00)) - goto out; - if (__device_refresh_sync()) - goto out; - if (__wait_latch(0x1611, 0x00)) - goto out; - - /* we have done our dance, now let's wait for the applause */ - for (total = INIT_TIMEOUT_MSECS; total > 0; total -= INIT_WAIT_MSECS) { - int x, y; + if (hdaps_set_power(1)) + { FAILED_INIT("hdaps_set_power failed"); goto bad; } - /* a read of the device helps push it into action */ - __hdaps_read_pair(HDAPS_PORT_XPOS, HDAPS_PORT_YPOS, &x, &y); - if (!__wait_latch(0x1611, 0x02)) { - ret = 0; - break; - } + if (hdaps_set_ec_config(sampling_rate*oversampling_ratio, + running_avg_filter_order)) + { FAILED_INIT("hdaps_set_ec_config failed"); goto bad; } - msleep(INIT_WAIT_MSECS); - } + thinkpad_ec_invalidate(); + udelay(200); -out: - mutex_unlock(&hdaps_mtx); + /* Just prefetch instead of reading, to avoid ~1sec delay on load */ + ret = thinkpad_ec_prefetch_row(&ec_accel_args); + if (ret) + { FAILED_INIT("initial prefetch failed"); goto bad; } + goto good; +bad: + thinkpad_ec_invalidate(); + ret = -ENXIO; +good: + stale_readout = 1; + thinkpad_ec_unlock(); return ret; } +/** + * hdaps_device_shutdown - power off the accelerometer + * Returns nonzero on failure. Can sleep. + */ +static int hdaps_device_shutdown(void) +{ + int ret; + ret = hdaps_set_power(0); + if (ret) { + pr_warn("cannot power off\n"); + return ret; + } + ret = hdaps_set_ec_config(0, 1); + if (ret) + pr_warn("cannot stop EC sampling\n"); + return ret; +} /* Device model stuff */ @@ -306,13 +424,29 @@ static int hdaps_probe(struct platform_device *dev) } #ifdef CONFIG_PM_SLEEP +static int hdaps_suspend(struct device *dev) +{ + /* Don't do hdaps polls until resume re-initializes the sensor. */ + del_timer_sync(&hdaps_timer); + hdaps_device_shutdown(); /* ignore errors, effect is negligible */ + return 0; +} + static int hdaps_resume(struct device *dev) { - return hdaps_device_init(); + int ret = hdaps_device_init(); + if (ret) + return ret; + + mutex_lock(&hdaps_users_mtx); + if (hdaps_users) + mod_timer(&hdaps_timer, jiffies + HZ/sampling_rate); + mutex_unlock(&hdaps_users_mtx); + return 0; } #endif -static SIMPLE_DEV_PM_OPS(hdaps_pm, NULL, hdaps_resume); +static SIMPLE_DEV_PM_OPS(hdaps_pm, hdaps_suspend, hdaps_resume); static struct platform_driver hdaps_driver = { .probe = hdaps_probe, @@ -322,30 +456,51 @@ static struct platform_driver hdaps_driver = { }, }; -/* - * hdaps_calibrate - Set our "resting" values. Callers must hold hdaps_mtx. +/** + * hdaps_calibrate - set our "resting" values. + * Does its own locking. */ static void hdaps_calibrate(void) { - __hdaps_read_pair(HDAPS_PORT_XPOS, HDAPS_PORT_YPOS, &rest_x, &rest_y); + needs_calibration = 1; + hdaps_update(); + /* If that fails, the mousedev poll will take care of things later. */ } -static void hdaps_mousedev_poll(struct input_polled_dev *dev) +/* Timer handler for updating the input device. Runs in softirq context, + * so avoid lenghty or blocking operations. + */ +#if LINUX_VERSION_CODE < KERNEL_VERSION(4,15,0) +static void hdaps_mousedev_poll(unsigned long unused) +#else +static void hdaps_mousedev_poll(struct timer_list *unused) +#endif { - struct input_dev *input_dev = dev->input; - int x, y; + int ret; - mutex_lock(&hdaps_mtx); + stale_readout = 1; - if (__hdaps_read_pair(HDAPS_PORT_XPOS, HDAPS_PORT_YPOS, &x, &y)) - goto out; + /* Cannot sleep. Try nonblockingly. If we fail, try again later. */ + if (thinkpad_ec_try_lock()) + goto keep_active; - input_report_abs(input_dev, ABS_X, x - rest_x); - input_report_abs(input_dev, ABS_Y, y - rest_y); - input_sync(input_dev); + ret = __hdaps_update(1); /* fast update, we're in softirq context */ + thinkpad_ec_unlock(); + /* Any of "successful", "not yet ready" and "not prefetched"? */ + if (ret != 0 && ret != -EBUSY && ret != -ENODATA) { + pr_err("poll failed, disabling updates\n"); + return; + } -out: - mutex_unlock(&hdaps_mtx); +keep_active: + /* Even if we failed now, pos_x,y may have been updated earlier: */ + input_report_abs(hdaps_idev, ABS_X, pos_x - rest_x); + input_report_abs(hdaps_idev, ABS_Y, pos_y - rest_y); + input_sync(hdaps_idev); + input_report_abs(hdaps_idev_raw, ABS_X, pos_x); + input_report_abs(hdaps_idev_raw, ABS_Y, pos_y); + input_sync(hdaps_idev_raw); + mod_timer(&hdaps_timer, jiffies + HZ/sampling_rate); } @@ -354,65 +509,41 @@ static void hdaps_mousedev_poll(struct input_polled_dev *dev) static ssize_t hdaps_position_show(struct device *dev, struct device_attribute *attr, char *buf) { - int ret, x, y; - - ret = hdaps_read_pair(HDAPS_PORT_XPOS, HDAPS_PORT_YPOS, &x, &y); + int ret = hdaps_update(); if (ret) return ret; - - return sprintf(buf, "(%d,%d)\n", x, y); -} - -static ssize_t hdaps_variance_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - int ret, x, y; - - ret = hdaps_read_pair(HDAPS_PORT_XVAR, HDAPS_PORT_YVAR, &x, &y); - if (ret) - return ret; - - return sprintf(buf, "(%d,%d)\n", x, y); + return sprintf(buf, "(%d,%d)\n", pos_x, pos_y); } static ssize_t hdaps_temp1_show(struct device *dev, struct device_attribute *attr, char *buf) { - u8 uninitialized_var(temp); - int ret; - - ret = hdaps_readb_one(HDAPS_PORT_TEMP1, &temp); - if (ret) - return ret; - - return sprintf(buf, "%u\n", temp); -} - -static ssize_t hdaps_temp2_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - u8 uninitialized_var(temp); - int ret; - - ret = hdaps_readb_one(HDAPS_PORT_TEMP2, &temp); + int ret = hdaps_update(); if (ret) return ret; - - return sprintf(buf, "%u\n", temp); + return sprintf(buf, "%d\n", temperature); } static ssize_t hdaps_keyboard_activity_show(struct device *dev, struct device_attribute *attr, char *buf) { - return sprintf(buf, "%u\n", KEYBD_ISSET(km_activity)); + int ret = hdaps_update(); + if (ret) + return ret; + return sprintf(buf, "%u\n", + get_jiffies_64() < last_keyboard_jiffies + KMACT_REMEMBER_PERIOD); } static ssize_t hdaps_mouse_activity_show(struct device *dev, struct device_attribute *attr, char *buf) { - return sprintf(buf, "%u\n", MOUSE_ISSET(km_activity)); + int ret = hdaps_update(); + if (ret) + return ret; + return sprintf(buf, "%u\n", + get_jiffies_64() < last_mouse_jiffies + KMACT_REMEMBER_PERIOD); } static ssize_t hdaps_calibrate_show(struct device *dev, @@ -425,10 +556,7 @@ static ssize_t hdaps_calibrate_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - mutex_lock(&hdaps_mtx); hdaps_calibrate(); - mutex_unlock(&hdaps_mtx); - return count; } @@ -445,7 +573,7 @@ static ssize_t hdaps_invert_store(struct device *dev, int invert; if (sscanf(buf, "%d", &invert) != 1 || - invert < 0 || invert > HDAPS_BOTH_AXES) + invert < 0 || invert > HDAPS_ORIENT_MAX) return -EINVAL; hdaps_invert = invert; @@ -454,24 +582,128 @@ static ssize_t hdaps_invert_store(struct device *dev, return count; } +static ssize_t hdaps_sampling_rate_show( + struct device *dev, struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "%d\n", sampling_rate); +} + +static ssize_t hdaps_sampling_rate_store( + struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int rate, ret; + if (sscanf(buf, "%d", &rate) != 1 || rate > HZ || rate <= 0) { + pr_warn("must have 0ident); - return 1; -} - /* hdaps_dmi_match_invert - found an inverted match. */ static int __init hdaps_dmi_match_invert(const struct dmi_system_id *id) { - hdaps_invert = (unsigned long)id->driver_data; - pr_info("inverting axis (%u) readings\n", hdaps_invert); - return hdaps_dmi_match(id); + unsigned int orient = (kernel_ulong_t) id->driver_data; + hdaps_invert = orient; + pr_info("%s detected, setting orientation %u\n", id->ident, orient); + return 1; /* stop enumeration */ } -#define HDAPS_DMI_MATCH_INVERT(vendor, model, axes) { \ +#define HDAPS_DMI_MATCH_INVERT(vendor, model, orient) { \ .ident = vendor " " model, \ .callback = hdaps_dmi_match_invert, \ - .driver_data = (void *)axes, \ + .driver_data = (void *)(orient), \ .matches = { \ DMI_MATCH(DMI_BOARD_VENDOR, vendor), \ DMI_MATCH(DMI_PRODUCT_VERSION, model) \ } \ } -#define HDAPS_DMI_MATCH_NORMAL(vendor, model) \ - HDAPS_DMI_MATCH_INVERT(vendor, model, 0) - -/* Note that HDAPS_DMI_MATCH_NORMAL("ThinkPad T42") would match - "ThinkPad T42p", so the order of the entries matters. - If your ThinkPad is not recognized, please update to latest - BIOS. This is especially the case for some R52 ThinkPads. */ -static const struct dmi_system_id hdaps_whitelist[] __initconst = { - HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad R50p", HDAPS_BOTH_AXES), - HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad R50"), - HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad R51"), - HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad R52"), - HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad R61i", HDAPS_BOTH_AXES), - HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad R61", HDAPS_BOTH_AXES), - HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad T41p", HDAPS_BOTH_AXES), - HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad T41"), - HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad T42p", HDAPS_BOTH_AXES), - HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad T42"), - HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad T43"), - HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T400", HDAPS_BOTH_AXES), - HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T60", HDAPS_BOTH_AXES), - HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T61p", HDAPS_BOTH_AXES), - HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T61", HDAPS_BOTH_AXES), - HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad X40"), - HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad X41", HDAPS_Y_AXIS), - HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X60", HDAPS_BOTH_AXES), - HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X61s", HDAPS_BOTH_AXES), - HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X61", HDAPS_BOTH_AXES), - HDAPS_DMI_MATCH_NORMAL("IBM", "ThinkPad Z60m"), - HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad Z61m", HDAPS_BOTH_AXES), - HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad Z61p", HDAPS_BOTH_AXES), +/* List of models with abnormal axis configuration. + Note that HDAPS_DMI_MATCH_NORMAL("ThinkPad T42") would match + "ThinkPad T42p", and enumeration stops after first match, + so the order of the entries matters. */ +const struct dmi_system_id hdaps_whitelist[] __initconst = { + HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad R50p", HDAPS_ORIENT_INVERT_XY), + HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad R60", HDAPS_ORIENT_INVERT_XY), + HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad T41p", HDAPS_ORIENT_INVERT_XY), + HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad T42p", HDAPS_ORIENT_INVERT_XY), + HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad X40", HDAPS_ORIENT_INVERT_Y), + HDAPS_DMI_MATCH_INVERT("IBM", "ThinkPad X41", HDAPS_ORIENT_INVERT_Y), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad R60", HDAPS_ORIENT_INVERT_XY), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad R61", HDAPS_ORIENT_INVERT_XY), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad R400", HDAPS_ORIENT_INVERT_XY), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad R500", HDAPS_ORIENT_INVERT_XY), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T60", HDAPS_ORIENT_INVERT_XY), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T61", HDAPS_ORIENT_INVERT_XY), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X60 Tablet", HDAPS_ORIENT_INVERT_Y), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X60s", HDAPS_ORIENT_INVERT_Y), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X60", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_X), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X61", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_X), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T400s", HDAPS_ORIENT_INVERT_X), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T400", HDAPS_ORIENT_INVERT_XY), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T410s", HDAPS_ORIENT_SWAP), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T410", HDAPS_ORIENT_INVERT_XY), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T500", HDAPS_ORIENT_INVERT_XY), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad T510", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_X | HDAPS_ORIENT_INVERT_Y), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad W510", HDAPS_ORIENT_MAX), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad W520", HDAPS_ORIENT_MAX), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X200s", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_XY), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X200", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_X | HDAPS_ORIENT_INVERT_Y), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X201 Tablet", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_XY), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X201s", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_XY), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X201", HDAPS_ORIENT_SWAP | HDAPS_ORIENT_INVERT_X), + HDAPS_DMI_MATCH_INVERT("LENOVO", "ThinkPad X220", HDAPS_ORIENT_SWAP), { .ident = NULL } }; static int __init hdaps_init(void) { - struct input_dev *idev; int ret; - if (!dmi_check_system(hdaps_whitelist)) { - pr_warn("supported laptop not found!\n"); - ret = -ENODEV; - goto out; - } - - if (!request_region(HDAPS_LOW_PORT, HDAPS_NR_PORTS, "hdaps")) { - ret = -ENXIO; - goto out; - } - + /* Determine axis orientation orientation */ + if (hdaps_invert == HDAPS_ORIENT_UNDEFINED) /* set by module param? */ + if (dmi_check_system(hdaps_whitelist) < 1) /* in whitelist? */ + hdaps_invert = 0; /* default */ + + /* Init timer before platform_driver_register, in case of suspend */ +#if LINUX_VERSION_CODE < KERNEL_VERSION(4,15,0) + init_timer(&hdaps_timer); + hdaps_timer.function = hdaps_mousedev_poll; +#else + timer_setup(&hdaps_timer, hdaps_mousedev_poll, 0); +#endif ret = platform_driver_register(&hdaps_driver); if (ret) - goto out_region; + goto out; pdev = platform_device_register_simple("hdaps", -1, NULL, 0); if (IS_ERR(pdev)) { @@ -571,47 +801,79 @@ static int __init hdaps_init(void) if (ret) goto out_device; - hdaps_idev = input_allocate_polled_device(); + hdaps_idev = input_allocate_device(); if (!hdaps_idev) { ret = -ENOMEM; goto out_group; } - hdaps_idev->poll = hdaps_mousedev_poll; - hdaps_idev->poll_interval = HDAPS_POLL_INTERVAL; - - /* initial calibrate for the input device */ - hdaps_calibrate(); + hdaps_idev_raw = input_allocate_device(); + if (!hdaps_idev_raw) { + ret = -ENOMEM; + goto out_idev_first; + } - /* initialize the input class */ - idev = hdaps_idev->input; - idev->name = "hdaps"; - idev->phys = "isa1600/input0"; - idev->id.bustype = BUS_ISA; - idev->dev.parent = &pdev->dev; - idev->evbit[0] = BIT_MASK(EV_ABS); - input_set_abs_params(idev, ABS_X, + /* calibration for the input device (deferred to avoid delay) */ + needs_calibration = 1; + + /* initialize the joystick-like fuzzed input device */ + hdaps_idev->name = "ThinkPad HDAPS joystick emulation"; + hdaps_idev->phys = "hdaps/input0"; + hdaps_idev->id.bustype = BUS_HOST; + hdaps_idev->id.vendor = HDAPS_INPUT_VENDOR; + hdaps_idev->id.product = HDAPS_INPUT_PRODUCT; + hdaps_idev->id.version = HDAPS_INPUT_JS_VERSION; +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25) + hdaps_idev->cdev.dev = &pdev->dev; +#endif + hdaps_idev->evbit[0] = BIT(EV_ABS); + hdaps_idev->open = hdaps_mousedev_open; + hdaps_idev->close = hdaps_mousedev_close; + input_set_abs_params(hdaps_idev, ABS_X, -256, 256, HDAPS_INPUT_FUZZ, HDAPS_INPUT_FLAT); - input_set_abs_params(idev, ABS_Y, + input_set_abs_params(hdaps_idev, ABS_Y, -256, 256, HDAPS_INPUT_FUZZ, HDAPS_INPUT_FLAT); - ret = input_register_polled_device(hdaps_idev); + ret = input_register_device(hdaps_idev); if (ret) goto out_idev; - pr_info("driver successfully loaded\n"); + /* initialize the raw data input device */ + hdaps_idev_raw->name = "ThinkPad HDAPS accelerometer data"; + hdaps_idev_raw->phys = "hdaps/input1"; + hdaps_idev_raw->id.bustype = BUS_HOST; + hdaps_idev_raw->id.vendor = HDAPS_INPUT_VENDOR; + hdaps_idev_raw->id.product = HDAPS_INPUT_PRODUCT; + hdaps_idev_raw->id.version = HDAPS_INPUT_RAW_VERSION; +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25) + hdaps_idev_raw->cdev.dev = &pdev->dev; +#endif + hdaps_idev_raw->evbit[0] = BIT(EV_ABS); + hdaps_idev_raw->open = hdaps_mousedev_open; + hdaps_idev_raw->close = hdaps_mousedev_close; + input_set_abs_params(hdaps_idev_raw, ABS_X, -32768, 32767, 0, 0); + input_set_abs_params(hdaps_idev_raw, ABS_Y, -32768, 32767, 0, 0); + + ret = input_register_device(hdaps_idev_raw); + if (ret) + goto out_idev_reg_first; + + pr_info("driver successfully loaded.\n"); return 0; +out_idev_reg_first: + input_unregister_device(hdaps_idev); out_idev: - input_free_polled_device(hdaps_idev); + input_free_device(hdaps_idev_raw); +out_idev_first: + input_free_device(hdaps_idev); out_group: sysfs_remove_group(&pdev->dev.kobj, &hdaps_attribute_group); out_device: platform_device_unregister(pdev); out_driver: platform_driver_unregister(&hdaps_driver); -out_region: - release_region(HDAPS_LOW_PORT, HDAPS_NR_PORTS); + hdaps_device_shutdown(); out: pr_warn("driver init failed (ret=%d)!\n", ret); return ret; @@ -619,12 +881,12 @@ static int __init hdaps_init(void) static void __exit hdaps_exit(void) { - input_unregister_polled_device(hdaps_idev); - input_free_polled_device(hdaps_idev); + input_unregister_device(hdaps_idev_raw); + input_unregister_device(hdaps_idev); + hdaps_device_shutdown(); /* ignore errors, effect is negligible */ sysfs_remove_group(&pdev->dev.kobj, &hdaps_attribute_group); platform_device_unregister(pdev); platform_driver_unregister(&hdaps_driver); - release_region(HDAPS_LOW_PORT, HDAPS_NR_PORTS); pr_info("driver unloaded\n"); } @@ -632,9 +894,8 @@ static void __exit hdaps_exit(void) module_init(hdaps_init); module_exit(hdaps_exit); -module_param_named(invert, hdaps_invert, int, 0); -MODULE_PARM_DESC(invert, "invert data along each axis. 1 invert x-axis, " - "2 invert y-axis, 3 invert both axes."); +module_param_named(invert, hdaps_invert, uint, 0); +MODULE_PARM_DESC(invert, "axis orientation code"); MODULE_AUTHOR("Robert Love"); MODULE_DESCRIPTION("IBM Hard Drive Active Protection System (HDAPS) driver"); diff --git a/drivers/platform/x86/thinkpad_ec.c b/drivers/platform/x86/thinkpad_ec.c new file mode 100644 index 00000000000..597614bc17e --- /dev/null +++ b/drivers/platform/x86/thinkpad_ec.c @@ -0,0 +1,513 @@ +/* + * thinkpad_ec.c - ThinkPad embedded controller LPC3 functions + * + * The embedded controller on ThinkPad laptops has a non-standard interface, + * where LPC channel 3 of the H8S EC chip is hooked up to IO ports + * 0x1600-0x161F and implements (a special case of) the H8S LPC protocol. + * The EC LPC interface provides various system management services (currently + * known: battery information and accelerometer readouts). This driver + * provides access and mutual exclusion for the EC interface. +* + * The LPC protocol and terminology are documented here: + * "H8S/2104B Group Hardware Manual", + * http://documentation.renesas.com/eng/products/mpumcu/rej09b0300_2140bhm.pdf + * + * Copyright (C) 2006-2007 Shem Multinymous + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26) + #include +#else + #include +#endif + +#define TP_VERSION "0.42" + +MODULE_AUTHOR("Shem Multinymous"); +MODULE_DESCRIPTION("ThinkPad embedded controller hardware access"); +MODULE_VERSION(TP_VERSION); +MODULE_LICENSE("GPL"); + +/* IO ports used by embedded controller LPC channel 3: */ +#define TPC_BASE_PORT 0x1600 +#define TPC_NUM_PORTS 0x20 +#define TPC_STR3_PORT 0x1604 /* Reads H8S EC register STR3 */ +#define TPC_TWR0_PORT 0x1610 /* Mapped to H8S EC register TWR0MW/SW */ +#define TPC_TWR15_PORT 0x161F /* Mapped to H8S EC register TWR15. */ + /* (and port TPC_TWR0_PORT+i is mapped to H8S reg TWRi for 00x%02x", \ + msg, args->val[0x0], args->val[0xF], code) + +/* State of request prefetching: */ +static u8 prefetch_arg0, prefetch_argF; /* Args of last prefetch */ +static u64 prefetch_jiffies; /* time of prefetch, or: */ +#define TPC_PREFETCH_NONE INITIAL_JIFFIES /* No prefetch */ +#define TPC_PREFETCH_JUNK (INITIAL_JIFFIES+1) /* Ignore prefetch */ + +/* Locking: */ +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37) +static DECLARE_MUTEX(thinkpad_ec_mutex); +#else +static DEFINE_SEMAPHORE(thinkpad_ec_mutex); +#endif + +/* Kludge in case the ACPI DSDT reserves the ports we need. */ +static bool force_io; /* Willing to do IO to ports we couldn't reserve? */ +static int reserved_io; /* Successfully reserved the ports? */ +module_param_named(force_io, force_io, bool, 0600); +MODULE_PARM_DESC(force_io, "Force IO even if region already reserved (0=off, 1=on)"); + +/** + * thinkpad_ec_lock - get lock on the ThinkPad EC + * + * Get exclusive lock for accesing the ThinkPad embedded controller LPC3 + * interface. Returns 0 iff lock acquired. + */ +int thinkpad_ec_lock(void) +{ + int ret; + ret = down_interruptible(&thinkpad_ec_mutex); + return ret; +} +EXPORT_SYMBOL_GPL(thinkpad_ec_lock); + +/** + * thinkpad_ec_try_lock - try getting lock on the ThinkPad EC + * + * Try getting an exclusive lock for accesing the ThinkPad embedded + * controller LPC3. Returns immediately if lock is not available; neither + * blocks nor sleeps. Returns 0 iff lock acquired . + */ +int thinkpad_ec_try_lock(void) +{ + return down_trylock(&thinkpad_ec_mutex); +} +EXPORT_SYMBOL_GPL(thinkpad_ec_try_lock); + +/** + * thinkpad_ec_unlock - release lock on ThinkPad EC + * + * Release a previously acquired exclusive lock on the ThinkPad ebmedded + * controller LPC3 interface. + */ +void thinkpad_ec_unlock(void) +{ + up(&thinkpad_ec_mutex); +} +EXPORT_SYMBOL_GPL(thinkpad_ec_unlock); + +/** + * thinkpad_ec_request_row - tell embedded controller to prepare a row + * @args Input register arguments + * + * Requests a data row by writing to H8S LPC registers TRW0 through TWR15 (or + * a subset thereof) following the protocol prescribed by the "H8S/2104B Group + * Hardware Manual". Does sanity checks via status register STR3. + */ +static int thinkpad_ec_request_row(const struct thinkpad_ec_row *args) +{ + u8 str3; + int i; + + /* EC protocol requires write to TWR0 (function code): */ + if (!(args->mask & 0x0001)) { + printk(KERN_ERR MSG_FMT("bad args->mask=0x%02x", args->mask)); + return -EINVAL; + } + + /* Check initial STR3 status: */ + str3 = inb(TPC_STR3_PORT) & H8S_STR3_MASK; + if (str3 & H8S_STR3_OBF3B) { /* data already pending */ + inb(TPC_TWR15_PORT); /* marks end of previous transaction */ + if (prefetch_jiffies == TPC_PREFETCH_NONE) + printk(KERN_WARNING REQ_FMT( + "EC has result from unrequested transaction", + str3)); + return -EBUSY; /* EC will be ready in a few usecs */ + } else if (str3 == H8S_STR3_SWMF) { /* busy with previous request */ + if (prefetch_jiffies == TPC_PREFETCH_NONE) + printk(KERN_WARNING REQ_FMT( + "EC is busy with unrequested transaction", + str3)); + return -EBUSY; /* data will be pending in a few usecs */ + } else if (str3 != 0x00) { /* unexpected status? */ + printk(KERN_WARNING REQ_FMT("unexpected initial STR3", str3)); + return -EIO; + } + + /* Send TWR0MW: */ + outb(args->val[0], TPC_TWR0_PORT); + str3 = inb(TPC_STR3_PORT) & H8S_STR3_MASK; + if (str3 != H8S_STR3_MWMF) { /* not accepted? */ + printk(KERN_WARNING REQ_FMT("arg0 rejected", str3)); + return -EIO; + } + + /* Send TWR1 through TWR14: */ + for (i = 1; i < TP_CONTROLLER_ROW_LEN-1; i++) + if ((args->mask>>i)&1) + outb(args->val[i], TPC_TWR0_PORT+i); + + /* Send TWR15 (default to 0x01). This marks end of command. */ + outb((args->mask & 0x8000) ? args->val[0xF] : 0x01, TPC_TWR15_PORT); + + /* Wait until EC starts writing its reply (~60ns on average). + * Releasing locks before this happens may cause an EC hang + * due to firmware bug! + */ + for (i = 0; i < TPC_REQUEST_RETRIES; i++) { + str3 = inb(TPC_STR3_PORT) & H8S_STR3_MASK; + if (str3 & H8S_STR3_SWMF) /* EC started replying */ + return 0; + else if (!(str3 & ~(H8S_STR3_IBF3B|H8S_STR3_MWMF))) + /* Normal progress (the EC hasn't seen the request + * yet, or is processing it). Wait it out. */ + ndelay(TPC_REQUEST_NDELAY); + else { /* weird EC status */ + printk(KERN_WARNING + REQ_FMT("bad end STR3", str3)); + return -EIO; + } + } + printk(KERN_WARNING REQ_FMT("EC is mysteriously silent", str3)); + return -EIO; +} + +/** + * thinkpad_ec_read_data - read pre-requested row-data from EC + * @args Input register arguments of pre-requested rows + * @data Output register values + * + * Reads current row data from the controller, assuming it's already + * requested. Follows the H8S spec for register access and status checks. + */ +static int thinkpad_ec_read_data(const struct thinkpad_ec_row *args, + struct thinkpad_ec_row *data) +{ + int i; + u8 str3 = inb(TPC_STR3_PORT) & H8S_STR3_MASK; + /* Once we make a request, STR3 assumes the sequence of values listed + * in the following 'if' as it reads the request and writes its data. + * It takes about a few dozen nanosecs total, with very high variance. + */ + if (str3 == (H8S_STR3_IBF3B|H8S_STR3_MWMF) || + str3 == 0x00 || /* the 0x00 is indistinguishable from idle EC! */ + str3 == H8S_STR3_SWMF) + return -EBUSY; /* not ready yet */ + /* Finally, the EC signals output buffer full: */ + if (str3 != (H8S_STR3_OBF3B|H8S_STR3_SWMF)) { + printk(KERN_WARNING + REQ_FMT("bad initial STR3", str3)); + return -EIO; + } + + /* Read first byte (signals start of read transactions): */ + data->val[0] = inb(TPC_TWR0_PORT); + /* Optionally read 14 more bytes: */ + for (i = 1; i < TP_CONTROLLER_ROW_LEN-1; i++) + if ((data->mask >> i)&1) + data->val[i] = inb(TPC_TWR0_PORT+i); + /* Read last byte from 0x161F (signals end of read transaction): */ + data->val[0xF] = inb(TPC_TWR15_PORT); + + /* Readout still pending? */ + str3 = inb(TPC_STR3_PORT) & H8S_STR3_MASK; + if (str3 & H8S_STR3_OBF3B) + printk(KERN_WARNING + REQ_FMT("OBF3B=1 after read", str3)); + /* If port 0x161F returns 0x80 too often, the EC may lock up. Warn: */ + if (data->val[0xF] == 0x80) + printk(KERN_WARNING + REQ_FMT("0x161F reports error", data->val[0xF])); + return 0; +} + +/** + * thinkpad_ec_is_row_fetched - is the given row currently prefetched? + * + * To keep things simple we compare only the first and last args; + * this suffices for all known cases. + */ +static int thinkpad_ec_is_row_fetched(const struct thinkpad_ec_row *args) +{ + return (prefetch_jiffies != TPC_PREFETCH_NONE) && + (prefetch_jiffies != TPC_PREFETCH_JUNK) && + (prefetch_arg0 == args->val[0]) && + (prefetch_argF == args->val[0xF]) && + (get_jiffies_64() < prefetch_jiffies + TPC_PREFETCH_TIMEOUT); +} + +/** + * thinkpad_ec_read_row - request and read data from ThinkPad EC + * @args Input register arguments + * @data Output register values + * + * Read a data row from the ThinkPad embedded controller LPC3 interface. + * Does fetching and retrying if needed. The row is specified by an + * array of 16 bytes, some of which may be undefined (but the first is + * mandatory). These bytes are given in @args->val[], where @args->val[i] is + * used iff (@args->mask>>i)&1). The resulting row data is stored in + * @data->val[], but is only guaranteed to be valid for indices corresponding + * to set bit in @data->mask. That is, if @data->mask&(1<val[i] is undefined. + * + * Returns -EBUSY on transient error and -EIO on abnormal condition. + * Caller must hold controller lock. + */ +int thinkpad_ec_read_row(const struct thinkpad_ec_row *args, + struct thinkpad_ec_row *data) +{ + int retries, ret; + + if (thinkpad_ec_is_row_fetched(args)) + goto read_row; /* already requested */ + + /* Request the row */ + for (retries = 0; retries < TPC_READ_RETRIES; ++retries) { + ret = thinkpad_ec_request_row(args); + if (!ret) + goto read_row; + if (ret != -EBUSY) + break; + ndelay(TPC_READ_NDELAY); + } + printk(KERN_ERR REQ_FMT("failed requesting row", ret)); + goto out; + +read_row: + /* Read the row's data */ + for (retries = 0; retries < TPC_READ_RETRIES; ++retries) { + ret = thinkpad_ec_read_data(args, data); + if (!ret) + goto out; + if (ret != -EBUSY) + break; + ndelay(TPC_READ_NDELAY); + } + + printk(KERN_ERR REQ_FMT("failed waiting for data", ret)); + +out: + prefetch_jiffies = TPC_PREFETCH_JUNK; + return ret; +} +EXPORT_SYMBOL_GPL(thinkpad_ec_read_row); + +/** + * thinkpad_ec_try_read_row - try reading prefetched data from ThinkPad EC + * @args Input register arguments + * @data Output register values + * + * Try reading a data row from the ThinkPad embedded controller LPC3 + * interface, if this raw was recently prefetched using + * thinkpad_ec_prefetch_row(). Does not fetch, retry or block. + * The parameters have the same meaning as in thinkpad_ec_read_row(). + * + * Returns -EBUSY is data not ready and -ENODATA if row not prefetched. + * Caller must hold controller lock. + */ +int thinkpad_ec_try_read_row(const struct thinkpad_ec_row *args, + struct thinkpad_ec_row *data) +{ + int ret; + if (!thinkpad_ec_is_row_fetched(args)) { + ret = -ENODATA; + } else { + ret = thinkpad_ec_read_data(args, data); + if (!ret) + prefetch_jiffies = TPC_PREFETCH_NONE; /* eaten up */ + } + return ret; +} +EXPORT_SYMBOL_GPL(thinkpad_ec_try_read_row); + +/** + * thinkpad_ec_prefetch_row - prefetch data from ThinkPad EC + * @args Input register arguments + * + * Prefetch a data row from the ThinkPad embedded controller LCP3 + * interface. A subsequent call to thinkpad_ec_read_row() with the + * same arguments will be faster, and a subsequent call to + * thinkpad_ec_try_read_row() stands a good chance of succeeding if + * done neither too soon nor too late. See + * thinkpad_ec_read_row() for the meaning of @args. + * + * Returns -EBUSY on transient error and -EIO on abnormal condition. + * Caller must hold controller lock. + */ +int thinkpad_ec_prefetch_row(const struct thinkpad_ec_row *args) +{ + int ret; + ret = thinkpad_ec_request_row(args); + if (ret) { + prefetch_jiffies = TPC_PREFETCH_JUNK; + } else { + prefetch_jiffies = get_jiffies_64(); + prefetch_arg0 = args->val[0x0]; + prefetch_argF = args->val[0xF]; + } + return ret; +} +EXPORT_SYMBOL_GPL(thinkpad_ec_prefetch_row); + +/** + * thinkpad_ec_invalidate - invalidate prefetched ThinkPad EC data + * + * Invalidate the data prefetched via thinkpad_ec_prefetch_row() from the + * ThinkPad embedded controller LPC3 interface. + * Must be called before unlocking by any code that accesses the controller + * ports directly. + */ +void thinkpad_ec_invalidate(void) +{ + prefetch_jiffies = TPC_PREFETCH_JUNK; +} +EXPORT_SYMBOL_GPL(thinkpad_ec_invalidate); + + +/*** Checking for EC hardware ***/ + +/** + * thinkpad_ec_test - verify the EC is present and follows protocol + * + * Ensure the EC LPC3 channel really works on this machine by making + * an EC request and seeing if the EC follows the documented H8S protocol. + * The requested row just reads battery status, so it should be harmless to + * access it (on a correct EC). + * This test writes to IO ports, so execute only after checking DMI. + */ +static int __init thinkpad_ec_test(void) +{ + int ret; + const struct thinkpad_ec_row args = /* battery 0 basic status */ + { .mask = 0x8001, .val = {0x01,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0x00} }; + struct thinkpad_ec_row data = { .mask = 0x0000 }; + ret = thinkpad_ec_lock(); + if (ret) + return ret; + ret = thinkpad_ec_read_row(&args, &data); + thinkpad_ec_unlock(); + return ret; +} + +/* Search all DMI device names of a given type for a substring */ +static int __init dmi_find_substring(int type, const char *substr) +{ + const struct dmi_device *dev = NULL; + while ((dev = dmi_find_device(type, NULL, dev))) { + if (strstr(dev->name, substr)) + return 1; + } + return 0; +} + +#define TP_DMI_MATCH(vendor,model) { \ + .ident = vendor " " model, \ + .matches = { \ + DMI_MATCH(DMI_BOARD_VENDOR, vendor), \ + DMI_MATCH(DMI_PRODUCT_VERSION, model) \ + } \ +} + +/* Check DMI for existence of ThinkPad embedded controller */ +static int __init check_dmi_for_ec(void) +{ + /* A few old models that have a good EC but don't report it in DMI */ + struct dmi_system_id tp_whitelist[] = { + TP_DMI_MATCH("IBM", "ThinkPad A30"), + TP_DMI_MATCH("IBM", "ThinkPad T23"), + TP_DMI_MATCH("IBM", "ThinkPad X24"), + TP_DMI_MATCH("LENOVO", "ThinkPad"), + { .ident = NULL } + }; + return dmi_find_substring(DMI_DEV_TYPE_OEM_STRING, + "IBM ThinkPad Embedded Controller") || + dmi_check_system(tp_whitelist); +} + +/*** Init and cleanup ***/ + +static int __init thinkpad_ec_init(void) +{ + if (!check_dmi_for_ec()) { + printk(KERN_WARNING + "thinkpad_ec: no ThinkPad embedded controller!\n"); + return -ENODEV; + } + + if (request_region(TPC_BASE_PORT, TPC_NUM_PORTS, "thinkpad_ec")) { + reserved_io = 1; + } else { + printk(KERN_ERR "thinkpad_ec: cannot claim IO ports %#x-%#x... ", + TPC_BASE_PORT, + TPC_BASE_PORT + TPC_NUM_PORTS - 1); + if (force_io) { + printk("forcing use of unreserved IO ports.\n"); + } else { + printk("consider using force_io=1.\n"); + return -ENXIO; + } + } + prefetch_jiffies = TPC_PREFETCH_JUNK; + if (thinkpad_ec_test()) { + printk(KERN_ERR "thinkpad_ec: initial ec test failed\n"); + if (reserved_io) + release_region(TPC_BASE_PORT, TPC_NUM_PORTS); + return -ENXIO; + } + printk(KERN_INFO "thinkpad_ec: thinkpad_ec " TP_VERSION " loaded.\n"); + return 0; +} + +static void __exit thinkpad_ec_exit(void) +{ + if (reserved_io) + release_region(TPC_BASE_PORT, TPC_NUM_PORTS); + printk(KERN_INFO "thinkpad_ec: unloaded.\n"); +} + +module_init(thinkpad_ec_init); +module_exit(thinkpad_ec_exit); diff --git a/drivers/platform/x86/tp_smapi.c b/drivers/platform/x86/tp_smapi.c new file mode 100644 index 00000000000..209cb6487e2 --- /dev/null +++ b/drivers/platform/x86/tp_smapi.c @@ -0,0 +1,1493 @@ +/* + * tp_smapi.c - ThinkPad SMAPI support + * + * This driver exposes some features of the System Management Application + * Program Interface (SMAPI) BIOS found on ThinkPad laptops. It works on + * models in which the SMAPI BIOS runs in SMM and is invoked by writing + * to the APM control port 0xB2. + * It also exposes battery status information, obtained from the ThinkPad + * embedded controller (via the thinkpad_ec module). + * Ancient ThinkPad models use a different interface, supported by the + * "thinkpad" module from "tpctl". + * + * Many of the battery status values obtained from the EC simply mirror + * values provided by the battery's Smart Battery System (SBS) interface, so + * their meaning is defined by the Smart Battery Data Specification (see + * http://sbs-forum.org/specs/sbdat110.pdf). References to this SBS spec + * are given in the code where relevant. + * + * Copyright (C) 2006 Shem Multinymous . + * SMAPI access code based on the mwave driver by Mike Sullivan. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include +#include +#include +#include +#include +#include /* CMOS defines */ +#include +#include +#include +#include +#include +#include + +#define TP_VERSION "0.42" +#define TP_DESC "ThinkPad SMAPI Support" +#define TP_DIR "smapi" + +MODULE_AUTHOR("Shem Multinymous"); +MODULE_DESCRIPTION(TP_DESC); +MODULE_VERSION(TP_VERSION); +MODULE_LICENSE("GPL"); + +static struct platform_device *pdev; + +static int tp_debug; +module_param_named(debug, tp_debug, int, 0600); +MODULE_PARM_DESC(debug, "Debug level (0=off, 1=on)"); + +/* A few macros for printk()ing: */ +#define TPRINTK(level, fmt, args...) \ + dev_printk(level, &(pdev->dev), "%s: " fmt "\n", __func__, ## args) +#define DPRINTK(fmt, args...) \ + do { if (tp_debug) TPRINTK(KERN_DEBUG, fmt, ## args); } while (0) + +/********************************************************************* + * SMAPI interface + */ + +/* SMAPI functions (register BX when making the SMM call). */ +#define SMAPI_GET_INHIBIT_CHARGE 0x2114 +#define SMAPI_SET_INHIBIT_CHARGE 0x2115 +#define SMAPI_GET_THRESH_START 0x2116 +#define SMAPI_SET_THRESH_START 0x2117 +#define SMAPI_GET_FORCE_DISCHARGE 0x2118 +#define SMAPI_SET_FORCE_DISCHARGE 0x2119 +#define SMAPI_GET_THRESH_STOP 0x211a +#define SMAPI_SET_THRESH_STOP 0x211b + +/* SMAPI error codes (see ThinkPad 770 Technical Reference Manual p.83 at + http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=PFAN-3TUQQD */ +#define SMAPI_RETCODE_EOF 0xff +static struct { u8 rc; char *msg; int ret; } smapi_retcode[] = +{ + {0x00, "OK", 0}, + {0x53, "SMAPI function is not available", -ENXIO}, + {0x81, "Invalid parameter", -EINVAL}, + {0x86, "Function is not supported by SMAPI BIOS", -EOPNOTSUPP}, + {0x90, "System error", -EIO}, + {0x91, "System is invalid", -EIO}, + {0x92, "System is busy, -EBUSY"}, + {0xa0, "Device error (disk read error)", -EIO}, + {0xa1, "Device is busy", -EBUSY}, + {0xa2, "Device is not attached", -ENXIO}, + {0xa3, "Device is disbled", -EIO}, + {0xa4, "Request parameter is out of range", -EINVAL}, + {0xa5, "Request parameter is not accepted", -EINVAL}, + {0xa6, "Transient error", -EBUSY}, /* ? */ + {SMAPI_RETCODE_EOF, "Unknown error code", -EIO} +}; + + +#define SMAPI_MAX_RETRIES 10 +#define SMAPI_PORT2 0x4F /* fixed port, meaning unclear */ +static unsigned short smapi_port; /* APM control port, normally 0xB2 */ + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37) +static DECLARE_MUTEX(smapi_mutex); +#else +static DEFINE_SEMAPHORE(smapi_mutex); +#endif + +/** + * find_smapi_port - read SMAPI port from NVRAM + */ +static int __init find_smapi_port(void) +{ + u16 smapi_id = 0; + unsigned short port = 0; + unsigned long flags; + + spin_lock_irqsave(&rtc_lock, flags); + smapi_id = CMOS_READ(0x7C); + smapi_id |= (CMOS_READ(0x7D) << 8); + spin_unlock_irqrestore(&rtc_lock, flags); + + if (smapi_id != 0x5349) { + printk(KERN_ERR "SMAPI not supported (ID=0x%x)\n", smapi_id); + return -ENXIO; + } + spin_lock_irqsave(&rtc_lock, flags); + port = CMOS_READ(0x7E); + port |= (CMOS_READ(0x7F) << 8); + spin_unlock_irqrestore(&rtc_lock, flags); + if (port == 0) { + printk(KERN_ERR "unable to read SMAPI port number\n"); + return -ENXIO; + } + return port; +} + +/** + * smapi_request - make a SMAPI call + * @inEBX, @inECX, @inEDI, @inESI: input registers + * @outEBX, @outECX, @outEDX, @outEDI, @outESI: outputs registers + * @msg: textual error message + * Invokes the SMAPI SMBIOS with the given input and outpu args. + * All outputs are optional (can be %NULL). + * Returns 0 when successful, and a negative errno constant + * (see smapi_retcode above) upon failure. + */ +static int smapi_request(u32 inEBX, u32 inECX, + u32 inEDI, u32 inESI, + u32 *outEBX, u32 *outECX, u32 *outEDX, + u32 *outEDI, u32 *outESI, const char **msg) +{ + int ret = 0; + int i; + int retries; + u8 rc; + /* Must use local vars for output regs, due to reg pressure. */ + u32 tmpEAX, tmpEBX, tmpECX, tmpEDX, tmpEDI, tmpESI; + + for (retries = 0; retries < SMAPI_MAX_RETRIES; ++retries) { + DPRINTK("req_in: BX=%x CX=%x DI=%x SI=%x", + inEBX, inECX, inEDI, inESI); + + /* SMAPI's SMBIOS call and thinkpad_ec end up using use + * different interfaces to the same chip, so play it safe. */ + ret = thinkpad_ec_lock(); + if (ret) + return ret; + + __asm__ __volatile__( + "movl $0x00005380,%%eax\n\t" + "movl %6,%%ebx\n\t" + "movl %7,%%ecx\n\t" + "movl %8,%%edi\n\t" + "movl %9,%%esi\n\t" + "xorl %%edx,%%edx\n\t" + "movw %10,%%dx\n\t" + "out %%al,%%dx\n\t" /* trigger SMI to SMBIOS */ + "out %%al,$0x4F\n\t" + "movl %%eax,%0\n\t" + "movl %%ebx,%1\n\t" + "movl %%ecx,%2\n\t" + "movl %%edx,%3\n\t" + "movl %%edi,%4\n\t" + "movl %%esi,%5\n\t" + :"=m"(tmpEAX), + "=m"(tmpEBX), + "=m"(tmpECX), + "=m"(tmpEDX), + "=m"(tmpEDI), + "=m"(tmpESI) + :"m"(inEBX), "m"(inECX), "m"(inEDI), "m"(inESI), + "m"((u16)smapi_port) + :"%eax", "%ebx", "%ecx", "%edx", "%edi", + "%esi"); + + thinkpad_ec_invalidate(); + thinkpad_ec_unlock(); + + /* Don't let the next SMAPI access happen too quickly, + * may case problems. (We're hold smapi_mutex). */ + msleep(50); + + if (outEBX) *outEBX = tmpEBX; + if (outECX) *outECX = tmpECX; + if (outEDX) *outEDX = tmpEDX; + if (outESI) *outESI = tmpESI; + if (outEDI) *outEDI = tmpEDI; + + /* Look up error code */ + rc = (tmpEAX>>8)&0xFF; + for (i = 0; smapi_retcode[i].rc != SMAPI_RETCODE_EOF && + smapi_retcode[i].rc != rc; ++i) {} + ret = smapi_retcode[i].ret; + if (msg) + *msg = smapi_retcode[i].msg; + + DPRINTK("req_out: AX=%x BX=%x CX=%x DX=%x DI=%x SI=%x r=%d", + tmpEAX, tmpEBX, tmpECX, tmpEDX, tmpEDI, tmpESI, ret); + if (ret) + TPRINTK(KERN_NOTICE, "SMAPI error: %s (func=%x)", + smapi_retcode[i].msg, inEBX); + + if (ret != -EBUSY) + return ret; + } + return ret; +} + +/* Convenience wrapper: discard output arguments */ +static int smapi_write(u32 inEBX, u32 inECX, + u32 inEDI, u32 inESI, const char **msg) +{ + return smapi_request(inEBX, inECX, inEDI, inESI, + NULL, NULL, NULL, NULL, NULL, msg); +} + + +/********************************************************************* + * Specific SMAPI services + * All of these functions return 0 upon success, and a negative errno + * constant (see smapi_retcode) on failure. + */ + +enum thresh_type { + THRESH_STOP = 0, /* the code assumes this is 0 for brevity */ + THRESH_START +}; +#define THRESH_NAME(which) ((which == THRESH_START) ? "start" : "stop") + +/** + * __get_real_thresh - read battery charge start/stop threshold from SMAPI + * @bat: battery number (0 or 1) + * @which: THRESH_START or THRESH_STOP + * @thresh: 1..99, 0=default 1..99, 0=default (pass this as-is to SMAPI) + * @outEDI: some additional state that needs to be preserved, meaning unknown + * @outESI: some additional state that needs to be preserved, meaning unknown + */ +static int __get_real_thresh(int bat, enum thresh_type which, int *thresh, + u32 *outEDI, u32 *outESI) +{ + u32 ebx = (which == THRESH_START) ? SMAPI_GET_THRESH_START + : SMAPI_GET_THRESH_STOP; + u32 ecx = (bat+1)<<8; + const char *msg; + int ret = smapi_request(ebx, ecx, 0, 0, NULL, + &ecx, NULL, outEDI, outESI, &msg); + if (ret) { + TPRINTK(KERN_NOTICE, "cannot get %s_thresh of bat=%d: %s", + THRESH_NAME(which), bat, msg); + return ret; + } + if (!(ecx&0x00000100)) { + TPRINTK(KERN_NOTICE, "cannot get %s_thresh of bat=%d: ecx=0%x", + THRESH_NAME(which), bat, ecx); + return -EIO; + } + if (thresh) + *thresh = ecx&0xFF; + return 0; +} + +/** + * get_real_thresh - read battery charge start/stop threshold from SMAPI + * @bat: battery number (0 or 1) + * @which: THRESH_START or THRESH_STOP + * @thresh: 1..99, 0=default (passes as-is to SMAPI) + */ +static int get_real_thresh(int bat, enum thresh_type which, int *thresh) +{ + return __get_real_thresh(bat, which, thresh, NULL, NULL); +} + +/** + * set_real_thresh - write battery start/top charge threshold to SMAPI + * @bat: battery number (0 or 1) + * @which: THRESH_START or THRESH_STOP + * @thresh: 1..99, 0=default (passes as-is to SMAPI) + */ +static int set_real_thresh(int bat, enum thresh_type which, int thresh) +{ + u32 ebx = (which == THRESH_START) ? SMAPI_SET_THRESH_START + : SMAPI_SET_THRESH_STOP; + u32 ecx = ((bat+1)<<8) + thresh; + u32 getDI, getSI; + const char *msg; + int ret; + + /* verify read before writing */ + ret = __get_real_thresh(bat, which, NULL, &getDI, &getSI); + if (ret) + return ret; + + ret = smapi_write(ebx, ecx, getDI, getSI, &msg); + if (ret) + TPRINTK(KERN_NOTICE, "set %s to %d for bat=%d failed: %s", + THRESH_NAME(which), thresh, bat, msg); + else + TPRINTK(KERN_INFO, "set %s to %d for bat=%d", + THRESH_NAME(which), thresh, bat); + return ret; +} + +/** + * __get_inhibit_charge_minutes - get inhibit charge period from SMAPI + * @bat: battery number (0 or 1) + * @minutes: period in minutes (1..65535 minutes, 0=disabled) + * @outECX: some additional state that needs to be preserved, meaning unknown + * Note that @minutes is the originally set value, it does not count down. + */ +static int __get_inhibit_charge_minutes(int bat, int *minutes, u32 *outECX) +{ + u32 ecx = (bat+1)<<8; + u32 esi; + const char *msg; + int ret = smapi_request(SMAPI_GET_INHIBIT_CHARGE, ecx, 0, 0, + NULL, &ecx, NULL, NULL, &esi, &msg); + if (ret) { + TPRINTK(KERN_NOTICE, "failed for bat=%d: %s", bat, msg); + return ret; + } + if (!(ecx&0x0100)) { + TPRINTK(KERN_NOTICE, "bad ecx=0x%x for bat=%d", ecx, bat); + return -EIO; + } + if (minutes) + *minutes = (ecx&0x0001)?esi:0; + if (outECX) + *outECX = ecx; + return 0; +} + +/** + * get_inhibit_charge_minutes - get inhibit charge period from SMAPI + * @bat: battery number (0 or 1) + * @minutes: period in minutes (1..65535 minutes, 0=disabled) + * Note that @minutes is the originally set value, it does not count down. + */ +static int get_inhibit_charge_minutes(int bat, int *minutes) +{ + return __get_inhibit_charge_minutes(bat, minutes, NULL); +} + +/** + * set_inhibit_charge_minutes - write inhibit charge period to SMAPI + * @bat: battery number (0 or 1) + * @minutes: period in minutes (1..65535 minutes, 0=disabled) + */ +static int set_inhibit_charge_minutes(int bat, int minutes) +{ + u32 ecx; + const char *msg; + int ret; + + /* verify read before writing */ + ret = __get_inhibit_charge_minutes(bat, NULL, &ecx); + if (ret) + return ret; + + ecx = ((bat+1)<<8) | (ecx&0x00FE) | (minutes > 0 ? 0x0001 : 0x0000); + if (minutes > 0xFFFF) + minutes = 0xFFFF; + ret = smapi_write(SMAPI_SET_INHIBIT_CHARGE, ecx, 0, minutes, &msg); + if (ret) + TPRINTK(KERN_NOTICE, + "set to %d failed for bat=%d: %s", minutes, bat, msg); + else + TPRINTK(KERN_INFO, "set to %d for bat=%d\n", minutes, bat); + return ret; +} + + +/** + * get_force_discharge - get status of forced discharging from SMAPI + * @bat: battery number (0 or 1) + * @enabled: 1 if forced discharged is enabled, 0 if not + */ +static int get_force_discharge(int bat, int *enabled) +{ + u32 ecx = (bat+1)<<8; + const char *msg; + int ret = smapi_request(SMAPI_GET_FORCE_DISCHARGE, ecx, 0, 0, + NULL, &ecx, NULL, NULL, NULL, &msg); + if (ret) { + TPRINTK(KERN_NOTICE, "failed for bat=%d: %s", bat, msg); + return ret; + } + *enabled = (!(ecx&0x00000100) && (ecx&0x00000001))?1:0; + return 0; +} + +/** + * set_force_discharge - write status of forced discharging to SMAPI + * @bat: battery number (0 or 1) + * @enabled: 1 if forced discharged is enabled, 0 if not + */ +static int set_force_discharge(int bat, int enabled) +{ + u32 ecx = (bat+1)<<8; + const char *msg; + int ret = smapi_request(SMAPI_GET_FORCE_DISCHARGE, ecx, 0, 0, + NULL, &ecx, NULL, NULL, NULL, &msg); + if (ret) { + TPRINTK(KERN_NOTICE, "get failed for bat=%d: %s", bat, msg); + return ret; + } + if (ecx&0x00000100) { + TPRINTK(KERN_NOTICE, "cannot force discharge bat=%d", bat); + return -EIO; + } + + ecx = ((bat+1)<<8) | (ecx&0x000000FA) | (enabled?0x00000001:0); + ret = smapi_write(SMAPI_SET_FORCE_DISCHARGE, ecx, 0, 0, &msg); + if (ret) + TPRINTK(KERN_NOTICE, "set to %d failed for bat=%d: %s", + enabled, bat, msg); + else + TPRINTK(KERN_INFO, "set to %d for bat=%d", enabled, bat); + return ret; +} + + +/********************************************************************* + * Wrappers to threshold-related SMAPI functions, which handle default + * thresholds and related quirks. + */ + +/* Minimum, default and minimum difference for battery charging thresholds: */ +#define MIN_THRESH_DELTA 4 /* Min delta between start and stop thresh */ +#define MIN_THRESH_START 2 +#define MAX_THRESH_START (100-MIN_THRESH_DELTA) +#define MIN_THRESH_STOP (MIN_THRESH_START + MIN_THRESH_DELTA) +#define MAX_THRESH_STOP 100 +#define DEFAULT_THRESH_START MAX_THRESH_START +#define DEFAULT_THRESH_STOP MAX_THRESH_STOP + +/* The GUI of IBM's Battery Maximizer seems to show a start threshold that + * is 1 more than the value we set/get via SMAPI. Since the threshold is + * maintained across reboot, this can be confusing. So we kludge our + * interface for interoperability: */ +#define BATMAX_FIX 1 + +/* Get charge start/stop threshold (1..100), + * substituting default values if needed and applying BATMAT_FIX. */ +static int get_thresh(int bat, enum thresh_type which, int *thresh) +{ + int ret = get_real_thresh(bat, which, thresh); + if (ret) + return ret; + if (*thresh == 0) + *thresh = (which == THRESH_START) ? DEFAULT_THRESH_START + : DEFAULT_THRESH_STOP; + else if (which == THRESH_START) + *thresh += BATMAX_FIX; + return 0; +} + + +/* Set charge start/stop threshold (1..100), + * substituting default values if needed and applying BATMAT_FIX. */ +static int set_thresh(int bat, enum thresh_type which, int thresh) +{ + if (which == THRESH_STOP && thresh == DEFAULT_THRESH_STOP) + thresh = 0; /* 100 is out of range, but default means 100 */ + if (which == THRESH_START) + thresh -= BATMAX_FIX; + return set_real_thresh(bat, which, thresh); +} + +/********************************************************************* + * ThinkPad embedded controller readout and basic functions + */ + +/** + * read_tp_ec_row - read data row from the ThinkPad embedded controller + * @arg0: EC command code + * @bat: battery number, 0 or 1 + * @j: the byte value to be used for "junk" (unused) input/outputs + * @dataval: result vector + */ +static int read_tp_ec_row(u8 arg0, int bat, u8 j, u8 *dataval) +{ + int ret; + const struct thinkpad_ec_row args = { .mask = 0xFFFF, + .val = {arg0, j,j,j,j,j,j,j,j,j,j,j,j,j,j, (u8)bat} }; + struct thinkpad_ec_row data = { .mask = 0xFFFF }; + + ret = thinkpad_ec_lock(); + if (ret) + return ret; + ret = thinkpad_ec_read_row(&args, &data); + thinkpad_ec_unlock(); + memcpy(dataval, &data.val, TP_CONTROLLER_ROW_LEN); + return ret; +} + +/** + * power_device_present - check for presence of battery or AC power + * @bat: 0 for battery 0, 1 for battery 1, otherwise AC power + * Returns 1 if present, 0 if not present, negative if error. + */ +static int power_device_present(int bat) +{ + u8 row[TP_CONTROLLER_ROW_LEN]; + u8 test; + int ret = read_tp_ec_row(1, bat, 0, row); + if (ret) + return ret; + switch (bat) { + case 0: test = 0x40; break; /* battery 0 */ + case 1: test = 0x20; break; /* battery 1 */ + default: test = 0x80; /* AC power */ + } + return (row[0] & test) ? 1 : 0; +} + +/** + * bat_has_status - check if battery can report detailed status + * @bat: 0 for battery 0, 1 for battery 1 + * Returns 1 if yes, 0 if no, negative if error. + */ +static int bat_has_status(int bat) +{ + u8 row[TP_CONTROLLER_ROW_LEN]; + int ret = read_tp_ec_row(1, bat, 0, row); + if (ret) + return ret; + if ((row[0] & (bat?0x20:0x40)) == 0) /* no battery */ + return 0; + if ((row[1] & (0x60)) == 0) /* no status */ + return 0; + return 1; +} + +/** + * get_tp_ec_bat_16 - read a 16-bit value from EC battery status data + * @arg0: first argument to EC + * @off: offset in row returned from EC + * @bat: battery (0 or 1) + * @val: the 16-bit value obtained + * Returns nonzero on error. + */ +static int get_tp_ec_bat_16(u8 arg0, int offset, int bat, u16 *val) +{ + u8 row[TP_CONTROLLER_ROW_LEN]; + int ret; + if (bat_has_status(bat) != 1) + return -ENXIO; + ret = read_tp_ec_row(arg0, bat, 0, row); + if (ret) + return ret; + *val = *(u16 *)(row+offset); + return 0; +} + +/********************************************************************* + * sysfs attributes for batteries - + * definitions and helper functions + */ + +/* A custom device attribute struct which holds a battery number */ +struct bat_device_attribute { + struct device_attribute dev_attr; + int bat; +}; + +/** + * attr_get_bat - get the battery to which the attribute belongs + */ +static int attr_get_bat(struct device_attribute *attr) +{ + return container_of(attr, struct bat_device_attribute, dev_attr)->bat; +} + +/** + * show_tp_ec_bat_u16 - show an unsigned 16-bit battery attribute + * @arg0: specified 1st argument of EC raw to read + * @offset: byte offset in EC raw data + * @mul: correction factor to multiply by + * @na_msg: string to output is value not available (0xFFFFFFFF) + * @attr: battery attribute + * @buf: output buffer + * The 16-bit value is read from the EC, treated as unsigned, + * transformed as x->mul*x, and printed to the buffer. + * If the value is 0xFFFFFFFF and na_msg!=%NULL, na_msg is printed instead. + */ +static ssize_t show_tp_ec_bat_u16(u8 arg0, int offset, int mul, + const char *na_msg, + struct device_attribute *attr, char *buf) +{ + u16 val; + int ret = get_tp_ec_bat_16(arg0, offset, attr_get_bat(attr), &val); + if (ret) + return ret; + if (na_msg && val == 0xFFFF) + return sprintf(buf, "%s\n", na_msg); + else + return sprintf(buf, "%u\n", mul*(unsigned int)val); +} + +/** + * show_tp_ec_bat_s16 - show an signed 16-bit battery attribute + * @arg0: specified 1st argument of EC raw to read + * @offset: byte offset in EC raw data + * @mul: correction factor to multiply by + * @add: correction term to add after multiplication + * @attr: battery attribute + * @buf: output buffer + * The 16-bit value is read from the EC, treated as signed, + * transformed as x->mul*x+add, and printed to the buffer. + */ +static ssize_t show_tp_ec_bat_s16(u8 arg0, int offset, int mul, int add, + struct device_attribute *attr, char *buf) +{ + u16 val; + int ret = get_tp_ec_bat_16(arg0, offset, attr_get_bat(attr), &val); + if (ret) + return ret; + return sprintf(buf, "%d\n", mul*(s16)val+add); +} + +/** + * show_tp_ec_bat_str - show a string from EC battery status data + * @arg0: specified 1st argument of EC raw to read + * @offset: byte offset in EC raw data + * @maxlen: maximum string length + * @attr: battery attribute + * @buf: output buffer + */ +static ssize_t show_tp_ec_bat_str(u8 arg0, int offset, int maxlen, + struct device_attribute *attr, char *buf) +{ + int bat = attr_get_bat(attr); + u8 row[TP_CONTROLLER_ROW_LEN]; + int ret; + if (bat_has_status(bat) != 1) + return -ENXIO; + ret = read_tp_ec_row(arg0, bat, 0, row); + if (ret) + return ret; + strncpy(buf, (char *)row+offset, maxlen); + buf[maxlen] = 0; + strcat(buf, "\n"); + return strlen(buf); +} + +/** + * show_tp_ec_bat_power - show a power readout from EC battery status data + * @arg0: specified 1st argument of EC raw to read + * @offV: byte offset of voltage in EC raw data + * @offI: byte offset of current in EC raw data + * @attr: battery attribute + * @buf: output buffer + * Computes the power as current*voltage from the two given readout offsets. + */ +static ssize_t show_tp_ec_bat_power(u8 arg0, int offV, int offI, + struct device_attribute *attr, char *buf) +{ + u8 row[TP_CONTROLLER_ROW_LEN]; + int milliamp, millivolt, ret; + int bat = attr_get_bat(attr); + if (bat_has_status(bat) != 1) + return -ENXIO; + ret = read_tp_ec_row(1, bat, 0, row); + if (ret) + return ret; + millivolt = *(u16 *)(row+offV); + milliamp = *(s16 *)(row+offI); + return sprintf(buf, "%d\n", milliamp*millivolt/1000); /* units: mW */ +} + +/** + * show_tp_ec_bat_date - decode and show a date from EC battery status data + * @arg0: specified 1st argument of EC raw to read + * @offset: byte offset in EC raw data + * @attr: battery attribute + * @buf: output buffer + */ +static ssize_t show_tp_ec_bat_date(u8 arg0, int offset, + struct device_attribute *attr, char *buf) +{ + u8 row[TP_CONTROLLER_ROW_LEN]; + u16 v; + int ret; + int day, month, year; + int bat = attr_get_bat(attr); + if (bat_has_status(bat) != 1) + return -ENXIO; + ret = read_tp_ec_row(arg0, bat, 0, row); + if (ret) + return ret; + + /* Decode bit-packed: v = day | (month<<5) | ((year-1980)<<9) */ + v = *(u16 *)(row+offset); + day = v & 0x1F; + month = (v >> 5) & 0xF; + year = (v >> 9) + 1980; + + return sprintf(buf, "%04d-%02d-%02d\n", year, month, day); +} + + +/********************************************************************* + * sysfs attribute I/O for batteries - + * the actual attribute show/store functions + */ + +static ssize_t show_battery_start_charge_thresh(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int thresh; + int bat = attr_get_bat(attr); + int ret = get_thresh(bat, THRESH_START, &thresh); + if (ret) + return ret; + return sprintf(buf, "%d\n", thresh); /* units: percent */ +} + +static ssize_t show_battery_stop_charge_thresh(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int thresh; + int bat = attr_get_bat(attr); + int ret = get_thresh(bat, THRESH_STOP, &thresh); + if (ret) + return ret; + return sprintf(buf, "%d\n", thresh); /* units: percent */ +} + +/** + * store_battery_start_charge_thresh - store battery_start_charge_thresh attr + * Since this is a kernel<->user interface, we ensure a valid state for + * the hardware. We do this by clamping the requested threshold to the + * valid range and, if necessary, moving the other threshold so that + * it's MIN_THRESH_DELTA away from this one. + */ +static ssize_t store_battery_start_charge_thresh(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + int thresh, other_thresh, ret; + int bat = attr_get_bat(attr); + + if (sscanf(buf, "%d", &thresh) != 1 || thresh < 1 || thresh > 100) + return -EINVAL; + + if (thresh < MIN_THRESH_START) /* clamp up to MIN_THRESH_START */ + thresh = MIN_THRESH_START; + if (thresh > MAX_THRESH_START) /* clamp down to MAX_THRESH_START */ + thresh = MAX_THRESH_START; + + down(&smapi_mutex); + ret = get_thresh(bat, THRESH_STOP, &other_thresh); + if (ret != -EOPNOTSUPP && ret != -ENXIO) { + if (ret) /* other threshold is set? */ + goto out; + ret = get_real_thresh(bat, THRESH_START, NULL); + if (ret) /* this threshold is set? */ + goto out; + if (other_thresh < thresh+MIN_THRESH_DELTA) { + /* move other thresh to keep it above this one */ + ret = set_thresh(bat, THRESH_STOP, + thresh+MIN_THRESH_DELTA); + if (ret) + goto out; + } + } + ret = set_thresh(bat, THRESH_START, thresh); +out: + up(&smapi_mutex); + return count; + +} + +/** + * store_battery_stop_charge_thresh - store battery_stop_charge_thresh attr + * Since this is a kernel<->user interface, we ensure a valid state for + * the hardware. We do this by clamping the requested threshold to the + * valid range and, if necessary, moving the other threshold so that + * it's MIN_THRESH_DELTA away from this one. + */ +static ssize_t store_battery_stop_charge_thresh(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + int thresh, other_thresh, ret; + int bat = attr_get_bat(attr); + + if (sscanf(buf, "%d", &thresh) != 1 || thresh < 1 || thresh > 100) + return -EINVAL; + + if (thresh < MIN_THRESH_STOP) /* clamp up to MIN_THRESH_STOP */ + thresh = MIN_THRESH_STOP; + + down(&smapi_mutex); + ret = get_thresh(bat, THRESH_START, &other_thresh); + if (ret != -EOPNOTSUPP && ret != -ENXIO) { /* other threshold exists? */ + if (ret) + goto out; + /* this threshold exists? */ + ret = get_real_thresh(bat, THRESH_STOP, NULL); + if (ret) + goto out; + if (other_thresh >= thresh-MIN_THRESH_DELTA) { + /* move other thresh to be below this one */ + ret = set_thresh(bat, THRESH_START, + thresh-MIN_THRESH_DELTA); + if (ret) + goto out; + } + } + ret = set_thresh(bat, THRESH_STOP, thresh); +out: + up(&smapi_mutex); + return count; +} + +static ssize_t show_battery_inhibit_charge_minutes(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int minutes; + int bat = attr_get_bat(attr); + int ret = get_inhibit_charge_minutes(bat, &minutes); + if (ret) + return ret; + return sprintf(buf, "%d\n", minutes); /* units: minutes */ +} + +static ssize_t store_battery_inhibit_charge_minutes(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int ret; + int minutes; + int bat = attr_get_bat(attr); + if (sscanf(buf, "%d", &minutes) != 1 || minutes < 0) { + TPRINTK(KERN_ERR, "inhibit_charge_minutes: " + "must be a non-negative integer"); + return -EINVAL; + } + ret = set_inhibit_charge_minutes(bat, minutes); + if (ret) + return ret; + return count; +} + +static ssize_t show_battery_force_discharge(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int enabled; + int bat = attr_get_bat(attr); + int ret = get_force_discharge(bat, &enabled); + if (ret) + return ret; + return sprintf(buf, "%d\n", enabled); /* type: boolean */ +} + +static ssize_t store_battery_force_discharge(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + int ret; + int enabled; + int bat = attr_get_bat(attr); + if (sscanf(buf, "%d", &enabled) != 1 || enabled < 0 || enabled > 1) + return -EINVAL; + ret = set_force_discharge(bat, enabled); + if (ret) + return ret; + return count; +} + +static ssize_t show_battery_installed( + struct device *dev, struct device_attribute *attr, char *buf) +{ + int bat = attr_get_bat(attr); + int ret = power_device_present(bat); + if (ret < 0) + return ret; + return sprintf(buf, "%d\n", ret); /* type: boolean */ +} + +static ssize_t show_battery_state( + struct device *dev, struct device_attribute *attr, char *buf) +{ + u8 row[TP_CONTROLLER_ROW_LEN]; + const char *txt; + int ret; + int bat = attr_get_bat(attr); + if (bat_has_status(bat) != 1) + return sprintf(buf, "none\n"); + ret = read_tp_ec_row(1, bat, 0, row); + if (ret) + return ret; + switch (row[1] & 0xf0) { + case 0xc0: txt = "idle"; break; + case 0xd0: txt = "discharging"; break; + case 0xe0: txt = "charging"; break; + default: return sprintf(buf, "unknown (0x%x)\n", row[1]); + } + return sprintf(buf, "%s\n", txt); /* type: string from fixed set */ +} + +static ssize_t show_battery_manufacturer( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* type: string. SBS spec v1.1 p34: ManufacturerName() */ + return show_tp_ec_bat_str(4, 2, TP_CONTROLLER_ROW_LEN-2, attr, buf); +} + +static ssize_t show_battery_model( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* type: string. SBS spec v1.1 p34: DeviceName() */ + return show_tp_ec_bat_str(5, 2, TP_CONTROLLER_ROW_LEN-2, attr, buf); +} + +static ssize_t show_battery_barcoding( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* type: string */ + return show_tp_ec_bat_str(7, 2, TP_CONTROLLER_ROW_LEN-2, attr, buf); +} + +static ssize_t show_battery_chemistry( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* type: string. SBS spec v1.1 p34-35: DeviceChemistry() */ + return show_tp_ec_bat_str(6, 2, 5, attr, buf); +} + +static ssize_t show_battery_voltage( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* units: mV. SBS spec v1.1 p24: Voltage() */ + return show_tp_ec_bat_u16(1, 6, 1, NULL, attr, buf); +} + +static ssize_t show_battery_design_voltage( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* units: mV. SBS spec v1.1 p32: DesignVoltage() */ + return show_tp_ec_bat_u16(3, 4, 1, NULL, attr, buf); +} + +static ssize_t show_battery_charging_max_voltage( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* units: mV. SBS spec v1.1 p37,39: ChargingVoltage() */ + return show_tp_ec_bat_u16(9, 8, 1, NULL, attr, buf); +} + +static ssize_t show_battery_group0_voltage( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* units: mV */ + return show_tp_ec_bat_u16(0xA, 12, 1, NULL, attr, buf); +} + +static ssize_t show_battery_group1_voltage( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* units: mV */ + return show_tp_ec_bat_u16(0xA, 10, 1, NULL, attr, buf); +} + +static ssize_t show_battery_group2_voltage( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* units: mV */ + return show_tp_ec_bat_u16(0xA, 8, 1, NULL, attr, buf); +} + +static ssize_t show_battery_group3_voltage( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* units: mV */ + return show_tp_ec_bat_u16(0xA, 6, 1, NULL, attr, buf); +} + +static ssize_t show_battery_current_now( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* units: mA. SBS spec v1.1 p24: Current() */ + return show_tp_ec_bat_s16(1, 8, 1, 0, attr, buf); +} + +static ssize_t show_battery_current_avg( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* units: mA. SBS spec v1.1 p24: AverageCurrent() */ + return show_tp_ec_bat_s16(1, 10, 1, 0, attr, buf); +} + +static ssize_t show_battery_charging_max_current( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* units: mA. SBS spec v1.1 p36,38: ChargingCurrent() */ + return show_tp_ec_bat_s16(9, 6, 1, 0, attr, buf); +} + +static ssize_t show_battery_power_now( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* units: mW. SBS spec v1.1: Voltage()*Current() */ + return show_tp_ec_bat_power(1, 6, 8, attr, buf); +} + +static ssize_t show_battery_power_avg( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* units: mW. SBS spec v1.1: Voltage()*AverageCurrent() */ + return show_tp_ec_bat_power(1, 6, 10, attr, buf); +} + +static ssize_t show_battery_remaining_percent( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* units: percent. SBS spec v1.1 p25: RelativeStateOfCharge() */ + return show_tp_ec_bat_u16(1, 12, 1, NULL, attr, buf); +} + +static ssize_t show_battery_remaining_percent_error( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* units: percent. SBS spec v1.1 p25: MaxError() */ + return show_tp_ec_bat_u16(9, 4, 1, NULL, attr, buf); +} + +static ssize_t show_battery_remaining_charging_time( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* units: minutes. SBS spec v1.1 p27: AverageTimeToFull() */ + return show_tp_ec_bat_u16(2, 8, 1, "not_charging", attr, buf); +} + +static ssize_t show_battery_remaining_running_time( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* units: minutes. SBS spec v1.1 p27: RunTimeToEmpty() */ + return show_tp_ec_bat_u16(2, 6, 1, "not_discharging", attr, buf); +} + +static ssize_t show_battery_remaining_running_time_now( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* units: minutes. SBS spec v1.1 p27: RunTimeToEmpty() */ + return show_tp_ec_bat_u16(2, 4, 1, "not_discharging", attr, buf); +} + +static ssize_t show_battery_remaining_capacity( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* units: mWh. SBS spec v1.1 p26. */ + return show_tp_ec_bat_u16(1, 14, 10, "", attr, buf); +} + +static ssize_t show_battery_last_full_capacity( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* units: mWh. SBS spec v1.1 p26: FullChargeCapacity() */ + return show_tp_ec_bat_u16(2, 2, 10, "", attr, buf); +} + +static ssize_t show_battery_design_capacity( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* units: mWh. SBS spec v1.1 p32: DesignCapacity() */ + return show_tp_ec_bat_u16(3, 2, 10, "", attr, buf); +} + +static ssize_t show_battery_cycle_count( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* units: ordinal. SBS spec v1.1 p32: CycleCount() */ + return show_tp_ec_bat_u16(2, 12, 1, "", attr, buf); +} + +static ssize_t show_battery_temperature( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* units: millicelsius. SBS spec v1.1: Temperature()*10 */ + return show_tp_ec_bat_s16(1, 4, 100, -273100, attr, buf); +} + +static ssize_t show_battery_serial( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* type: int. SBS spec v1.1 p34: SerialNumber() */ + return show_tp_ec_bat_u16(3, 10, 1, "", attr, buf); +} + +static ssize_t show_battery_manufacture_date( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* type: YYYY-MM-DD. SBS spec v1.1 p34: ManufactureDate() */ + return show_tp_ec_bat_date(3, 8, attr, buf); +} + +static ssize_t show_battery_first_use_date( + struct device *dev, struct device_attribute *attr, char *buf) +{ + /* type: YYYY-MM-DD */ + return show_tp_ec_bat_date(8, 2, attr, buf); +} + +/** + * show_battery_dump - show the battery's dump attribute + * The dump attribute gives a hex dump of all EC readouts related to a + * battery. Some of the enumerated values don't really exist (i.e., the + * EC function just leaves them untouched); we use a kludge to detect and + * denote these. + */ +#define MIN_DUMP_ARG0 0x00 +#define MAX_DUMP_ARG0 0x0a /* 0x0b is useful too but hangs old EC firmware */ +static ssize_t show_battery_dump( + struct device *dev, struct device_attribute *attr, char *buf) +{ + int i; + char *p = buf; + int bat = attr_get_bat(attr); + u8 arg0; /* first argument to EC */ + u8 rowa[TP_CONTROLLER_ROW_LEN], + rowb[TP_CONTROLLER_ROW_LEN]; + const u8 junka = 0xAA, + junkb = 0x55; /* junk values for testing changes */ + int ret; + + for (arg0 = MIN_DUMP_ARG0; arg0 <= MAX_DUMP_ARG0; ++arg0) { + if ((p-buf) > PAGE_SIZE-TP_CONTROLLER_ROW_LEN*5) + return -ENOMEM; /* don't overflow sysfs buf */ + /* Read raw twice with different junk values, + * to detect unused output bytes which are left unchaged: */ + ret = read_tp_ec_row(arg0, bat, junka, rowa); + if (ret) + return ret; + ret = read_tp_ec_row(arg0, bat, junkb, rowb); + if (ret) + return ret; + for (i = 0; i < TP_CONTROLLER_ROW_LEN; i++) { + if (rowa[i] == junka && rowb[i] == junkb) + p += sprintf(p, "-- "); /* unused by EC */ + else + p += sprintf(p, "%02x ", rowa[i]); + } + p += sprintf(p, "\n"); + } + return p-buf; +} + + +/********************************************************************* + * sysfs attribute I/O, other than batteries + */ + +static ssize_t show_ac_connected( + struct device *dev, struct device_attribute *attr, char *buf) +{ + int ret = power_device_present(0xFF); + if (ret < 0) + return ret; + return sprintf(buf, "%d\n", ret); /* type: boolean */ +} + +/********************************************************************* + * The the "smapi_request" sysfs attribute executes a raw SMAPI call. + * You write to make a request and read to get the result. The state + * is saved globally rather than per fd (sysfs limitation), so + * simultaenous requests may get each other's results! So this is for + * development and debugging only. + */ +#define MAX_SMAPI_ATTR_ANSWER_LEN 128 +static char smapi_attr_answer[MAX_SMAPI_ATTR_ANSWER_LEN] = ""; + +static ssize_t show_smapi_request(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int ret = snprintf(buf, PAGE_SIZE, "%s", smapi_attr_answer); + smapi_attr_answer[0] = '\0'; + return ret; +} + +static ssize_t store_smapi_request(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + unsigned int inEBX, inECX, inEDI, inESI; + u32 outEBX, outECX, outEDX, outEDI, outESI; + const char *msg; + int ret; + if (sscanf(buf, "%x %x %x %x", &inEBX, &inECX, &inEDI, &inESI) != 4) { + smapi_attr_answer[0] = '\0'; + return -EINVAL; + } + ret = smapi_request( + inEBX, inECX, inEDI, inESI, + &outEBX, &outECX, &outEDX, &outEDI, &outESI, &msg); + snprintf(smapi_attr_answer, MAX_SMAPI_ATTR_ANSWER_LEN, + "%x %x %x %x %x %d '%s'\n", + (unsigned int)outEBX, (unsigned int)outECX, + (unsigned int)outEDX, (unsigned int)outEDI, + (unsigned int)outESI, ret, msg); + if (ret) + return ret; + else + return count; +} + +/********************************************************************* + * Power management: the embedded controller forgets the battery + * thresholds when the system is suspended to disk and unplugged from + * AC and battery, so we restore it upon resume. + */ + +static int saved_threshs[4] = {-1, -1, -1, -1}; /* -1 = don't know */ + +static int tp_suspend(struct platform_device *dev, pm_message_t state) +{ + int restore = (state.event == PM_EVENT_HIBERNATE || + state.event == PM_EVENT_FREEZE); + if (!restore || get_real_thresh(0, THRESH_STOP , &saved_threshs[0])) + saved_threshs[0] = -1; + if (!restore || get_real_thresh(0, THRESH_START, &saved_threshs[1])) + saved_threshs[1] = -1; + if (!restore || get_real_thresh(1, THRESH_STOP , &saved_threshs[2])) + saved_threshs[2] = -1; + if (!restore || get_real_thresh(1, THRESH_START, &saved_threshs[3])) + saved_threshs[3] = -1; + DPRINTK("suspend saved: %d %d %d %d", saved_threshs[0], + saved_threshs[1], saved_threshs[2], saved_threshs[3]); + return 0; +} + +static int tp_resume(struct platform_device *dev) +{ + DPRINTK("resume restoring: %d %d %d %d", saved_threshs[0], + saved_threshs[1], saved_threshs[2], saved_threshs[3]); + if (saved_threshs[0] >= 0) + set_real_thresh(0, THRESH_STOP , saved_threshs[0]); + if (saved_threshs[1] >= 0) + set_real_thresh(0, THRESH_START, saved_threshs[1]); + if (saved_threshs[2] >= 0) + set_real_thresh(1, THRESH_STOP , saved_threshs[2]); + if (saved_threshs[3] >= 0) + set_real_thresh(1, THRESH_START, saved_threshs[3]); + return 0; +} + + +/********************************************************************* + * Driver model + */ + +static struct platform_driver tp_driver = { + .suspend = tp_suspend, + .resume = tp_resume, + .driver = { + .name = "smapi", + .owner = THIS_MODULE + }, +}; + + +/********************************************************************* + * Sysfs device model + */ + +/* Attributes in /sys/devices/platform/smapi/ */ + +static DEVICE_ATTR(ac_connected, 0444, show_ac_connected, NULL); +static DEVICE_ATTR(smapi_request, 0600, show_smapi_request, + store_smapi_request); + +static struct attribute *tp_root_attributes[] = { + &dev_attr_ac_connected.attr, + &dev_attr_smapi_request.attr, + NULL +}; +static struct attribute_group tp_root_attribute_group = { + .attrs = tp_root_attributes +}; + +/* Attributes under /sys/devices/platform/smapi/BAT{0,1}/ : + * Every attribute needs to be defined (i.e., statically allocated) for + * each battery, and then referenced in the attribute list of each battery. + * We use preprocessor voodoo to avoid duplicating the list of attributes 4 + * times. The preprocessor output is just normal sysfs attributes code. + */ + +/** + * FOREACH_BAT_ATTR - invoke the given macros on all our battery attributes + * @_BAT: battery number (0 or 1) + * @_ATTR_RW: macro to invoke for each read/write attribute + * @_ATTR_R: macro to invoke for each read-only attribute + */ +#define FOREACH_BAT_ATTR(_BAT, _ATTR_RW, _ATTR_R) \ + _ATTR_RW(_BAT, start_charge_thresh) \ + _ATTR_RW(_BAT, stop_charge_thresh) \ + _ATTR_RW(_BAT, inhibit_charge_minutes) \ + _ATTR_RW(_BAT, force_discharge) \ + _ATTR_R(_BAT, installed) \ + _ATTR_R(_BAT, state) \ + _ATTR_R(_BAT, manufacturer) \ + _ATTR_R(_BAT, model) \ + _ATTR_R(_BAT, barcoding) \ + _ATTR_R(_BAT, chemistry) \ + _ATTR_R(_BAT, voltage) \ + _ATTR_R(_BAT, group0_voltage) \ + _ATTR_R(_BAT, group1_voltage) \ + _ATTR_R(_BAT, group2_voltage) \ + _ATTR_R(_BAT, group3_voltage) \ + _ATTR_R(_BAT, current_now) \ + _ATTR_R(_BAT, current_avg) \ + _ATTR_R(_BAT, charging_max_current) \ + _ATTR_R(_BAT, power_now) \ + _ATTR_R(_BAT, power_avg) \ + _ATTR_R(_BAT, remaining_percent) \ + _ATTR_R(_BAT, remaining_percent_error) \ + _ATTR_R(_BAT, remaining_charging_time) \ + _ATTR_R(_BAT, remaining_running_time) \ + _ATTR_R(_BAT, remaining_running_time_now) \ + _ATTR_R(_BAT, remaining_capacity) \ + _ATTR_R(_BAT, last_full_capacity) \ + _ATTR_R(_BAT, design_voltage) \ + _ATTR_R(_BAT, charging_max_voltage) \ + _ATTR_R(_BAT, design_capacity) \ + _ATTR_R(_BAT, cycle_count) \ + _ATTR_R(_BAT, temperature) \ + _ATTR_R(_BAT, serial) \ + _ATTR_R(_BAT, manufacture_date) \ + _ATTR_R(_BAT, first_use_date) \ + _ATTR_R(_BAT, dump) + +/* Define several macros we will feed into FOREACH_BAT_ATTR: */ + +#define DEFINE_BAT_ATTR_RW(_BAT,_NAME) \ + static struct bat_device_attribute dev_attr_##_NAME##_##_BAT = { \ + .dev_attr = __ATTR(_NAME, 0644, show_battery_##_NAME, \ + store_battery_##_NAME), \ + .bat = _BAT \ + }; + +#define DEFINE_BAT_ATTR_R(_BAT,_NAME) \ + static struct bat_device_attribute dev_attr_##_NAME##_##_BAT = { \ + .dev_attr = __ATTR(_NAME, 0644, show_battery_##_NAME, 0), \ + .bat = _BAT \ + }; + +#define REF_BAT_ATTR(_BAT,_NAME) \ + &dev_attr_##_NAME##_##_BAT.dev_attr.attr, + +/* This provide all attributes for one battery: */ + +#define PROVIDE_BAT_ATTRS(_BAT) \ + FOREACH_BAT_ATTR(_BAT, DEFINE_BAT_ATTR_RW, DEFINE_BAT_ATTR_R) \ + static struct attribute *tp_bat##_BAT##_attributes[] = { \ + FOREACH_BAT_ATTR(_BAT, REF_BAT_ATTR, REF_BAT_ATTR) \ + NULL \ + }; \ + static struct attribute_group tp_bat##_BAT##_attribute_group = { \ + .name = "BAT" #_BAT, \ + .attrs = tp_bat##_BAT##_attributes \ + }; + +/* Finally genereate the attributes: */ + +PROVIDE_BAT_ATTRS(0) +PROVIDE_BAT_ATTRS(1) + +/* List of attribute groups */ + +static struct attribute_group *attr_groups[] = { + &tp_root_attribute_group, + &tp_bat0_attribute_group, + &tp_bat1_attribute_group, + NULL +}; + + +/********************************************************************* + * Init and cleanup + */ + +static struct attribute_group **next_attr_group; /* next to register */ + +static int __init tp_init(void) +{ + int ret; + printk(KERN_INFO "tp_smapi " TP_VERSION " loading...\n"); + + ret = find_smapi_port(); + if (ret < 0) + goto err; + else + smapi_port = ret; + + if (!request_region(smapi_port, 1, "smapi")) { + printk(KERN_ERR "tp_smapi cannot claim port 0x%x\n", + smapi_port); + ret = -ENXIO; + goto err; + } + + if (!request_region(SMAPI_PORT2, 1, "smapi")) { + printk(KERN_ERR "tp_smapi cannot claim port 0x%x\n", + SMAPI_PORT2); + ret = -ENXIO; + goto err_port1; + } + + ret = platform_driver_register(&tp_driver); + if (ret) + goto err_port2; + + pdev = platform_device_alloc("smapi", -1); + if (!pdev) { + ret = -ENOMEM; + goto err_driver; + } + + ret = platform_device_add(pdev); + if (ret) + goto err_device_free; + + for (next_attr_group = attr_groups; *next_attr_group; + ++next_attr_group) { + ret = sysfs_create_group(&pdev->dev.kobj, *next_attr_group); + if (ret) + goto err_attr; + } + + printk(KERN_INFO "tp_smapi successfully loaded (smapi_port=0x%x).\n", + smapi_port); + return 0; + +err_attr: + while (--next_attr_group >= attr_groups) + sysfs_remove_group(&pdev->dev.kobj, *next_attr_group); + platform_device_unregister(pdev); +err_device_free: + platform_device_put(pdev); +err_driver: + platform_driver_unregister(&tp_driver); +err_port2: + release_region(SMAPI_PORT2, 1); +err_port1: + release_region(smapi_port, 1); +err: + printk(KERN_ERR "tp_smapi init failed (ret=%d)!\n", ret); + return ret; +} + +static void __exit tp_exit(void) +{ + while (next_attr_group && --next_attr_group >= attr_groups) + sysfs_remove_group(&pdev->dev.kobj, *next_attr_group); + platform_device_unregister(pdev); + platform_driver_unregister(&tp_driver); + release_region(SMAPI_PORT2, 1); + if (smapi_port) + release_region(smapi_port, 1); + + printk(KERN_INFO "tp_smapi unloaded.\n"); +} + +module_init(tp_init); +module_exit(tp_exit); diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig index 35c909bbf8b..3ddc4eb2ed9 100644 --- a/drivers/scsi/Kconfig +++ b/drivers/scsi/Kconfig @@ -1518,4 +1518,6 @@ source "drivers/scsi/device_handler/Kconfig" source "drivers/scsi/osd/Kconfig" +source "drivers/scsi/vhba/Kconfig" + endmenu diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile index 80aca245635..c75ccbf485c 100644 --- a/drivers/scsi/Makefile +++ b/drivers/scsi/Makefile @@ -151,6 +151,7 @@ obj-$(CONFIG_SCSI_ENCLOSURE) += ses.o obj-$(CONFIG_SCSI_OSD_INITIATOR) += osd/ obj-$(CONFIG_SCSI_HISI_SAS) += hisi_sas/ +obj-$(CONFIG_VHBA) += vhba/ # This goes last, so that "real" scsi devices probe earlier obj-$(CONFIG_SCSI_DEBUG) += scsi_debug.o diff --git a/drivers/scsi/vhba/Kconfig b/drivers/scsi/vhba/Kconfig new file mode 100644 index 00000000000..7ccb7d8dc25 --- /dev/null +++ b/drivers/scsi/vhba/Kconfig @@ -0,0 +1,9 @@ +config VHBA + tristate "Virtual (SCSI) Host Bus Adapter" + depends on SCSI + ---help--- + This is the in-kernel part of CDEmu, a CD/DVD-ROM device + emulator. + + This driver can also be built as a module. If so, the module + will be called vhba. diff --git a/drivers/scsi/vhba/Makefile b/drivers/scsi/vhba/Makefile new file mode 100644 index 00000000000..a2a3f9d9c7c --- /dev/null +++ b/drivers/scsi/vhba/Makefile @@ -0,0 +1,4 @@ +VHBA_VERSION := 20170610 + +obj-$(CONFIG_VHBA) += vhba.o +ccflags-y := -DVHBA_VERSION=\"$(VHBA_VERSION)\" -Werror diff --git a/drivers/scsi/vhba/vhba.c b/drivers/scsi/vhba/vhba.c new file mode 100644 index 00000000000..ff30e4cb51b --- /dev/null +++ b/drivers/scsi/vhba/vhba.c @@ -0,0 +1,1076 @@ +/* + * vhba.c + * + * Copyright (C) 2007-2012 Chia-I Wu + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include + +#include +#include +#include +#include +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0) +#include +#else +#include +#endif +#include +#include +#include +#include +#ifdef CONFIG_COMPAT +#include +#endif +#include +#include +#include +#include +#include + +/* scatterlist.page_link and sg_page() were introduced in 2.6.24 */ +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24) +#define USE_SG_PAGE +#include +#endif + +MODULE_AUTHOR("Chia-I Wu"); +MODULE_VERSION(VHBA_VERSION); +MODULE_DESCRIPTION("Virtual SCSI HBA"); +MODULE_LICENSE("GPL"); + +#ifdef DEBUG +#define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__, ## args) +#else +#define DPRINTK(fmt, args...) +#endif + +/* scmd_dbg was introduced in 3.15 */ +#ifndef scmd_dbg +#define scmd_dbg(scmd, fmt, a...) \ + dev_dbg(&(scmd)->device->sdev_gendev, fmt, ##a) +#endif + +#ifndef scmd_warn +#define scmd_warn(scmd, fmt, a...) \ + dev_warn(&(scmd)->device->sdev_gendev, fmt, ##a) +#endif + +#define VHBA_MAX_SECTORS_PER_IO 256 +#define VHBA_MAX_ID 32 +#define VHBA_CAN_QUEUE 32 +#define VHBA_INVALID_ID VHBA_MAX_ID + +#define DATA_TO_DEVICE(dir) ((dir) == DMA_TO_DEVICE || (dir) == DMA_BIDIRECTIONAL) +#define DATA_FROM_DEVICE(dir) ((dir) == DMA_FROM_DEVICE || (dir) == DMA_BIDIRECTIONAL) + + +/* SCSI macros were introduced in 2.6.23 */ +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 23) +#define scsi_sg_count(cmd) ((cmd)->use_sg) +#define scsi_sglist(cmd) ((cmd)->request_buffer) +#define scsi_bufflen(cmd) ((cmd)->request_bufflen) +#define scsi_set_resid(cmd, to_read) {(cmd)->resid = (to_read);} +#endif + +/* 1-argument form of k[un]map_atomic was introduced in 2.6.37-rc1; + 2-argument form was deprecated in 3.4-rc1 */ +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 37) +#define vhba_kmap_atomic kmap_atomic +#define vhba_kunmap_atomic kunmap_atomic +#else +#define vhba_kmap_atomic(page) kmap_atomic(page, KM_USER0) +#define vhba_kunmap_atomic(page) kunmap_atomic(page, KM_USER0) +#endif + + +enum vhba_req_state { + VHBA_REQ_FREE, + VHBA_REQ_PENDING, + VHBA_REQ_READING, + VHBA_REQ_SENT, + VHBA_REQ_WRITING, +}; + +struct vhba_command { + struct scsi_cmnd *cmd; + int status; + struct list_head entry; +}; + +struct vhba_device { + uint id; + spinlock_t cmd_lock; + struct list_head cmd_list; + wait_queue_head_t cmd_wq; + atomic_t refcnt; +}; + +struct vhba_host { + struct Scsi_Host *shost; + spinlock_t cmd_lock; + int cmd_next; + struct vhba_command commands[VHBA_CAN_QUEUE]; + spinlock_t dev_lock; + struct vhba_device *devices[VHBA_MAX_ID]; + int num_devices; + DECLARE_BITMAP(chgmap, VHBA_MAX_ID); + int chgtype[VHBA_MAX_ID]; + struct work_struct scan_devices; +}; + +#define MAX_COMMAND_SIZE 16 + +struct vhba_request { + __u32 tag; + __u32 lun; + __u8 cdb[MAX_COMMAND_SIZE]; + __u8 cdb_len; + __u32 data_len; +}; + +struct vhba_response { + __u32 tag; + __u32 status; + __u32 data_len; +}; + +static struct vhba_command *vhba_alloc_command (void); +static void vhba_free_command (struct vhba_command *vcmd); + +static struct platform_device vhba_platform_device; + +static struct vhba_device *vhba_device_alloc (void) +{ + struct vhba_device *vdev; + + vdev = kzalloc(sizeof(struct vhba_device), GFP_KERNEL); + if (!vdev) { + return NULL; + } + + vdev->id = VHBA_INVALID_ID; + spin_lock_init(&vdev->cmd_lock); + INIT_LIST_HEAD(&vdev->cmd_list); + init_waitqueue_head(&vdev->cmd_wq); + atomic_set(&vdev->refcnt, 1); + + return vdev; +} + +static void vhba_device_put (struct vhba_device *vdev) +{ + if (atomic_dec_and_test(&vdev->refcnt)) { + kfree(vdev); + } +} + +static struct vhba_device *vhba_device_get (struct vhba_device *vdev) +{ + atomic_inc(&vdev->refcnt); + + return vdev; +} + +static int vhba_device_queue (struct vhba_device *vdev, struct scsi_cmnd *cmd) +{ + struct vhba_command *vcmd; + unsigned long flags; + + vcmd = vhba_alloc_command(); + if (!vcmd) { + return SCSI_MLQUEUE_HOST_BUSY; + } + + vcmd->cmd = cmd; + + spin_lock_irqsave(&vdev->cmd_lock, flags); + list_add_tail(&vcmd->entry, &vdev->cmd_list); + spin_unlock_irqrestore(&vdev->cmd_lock, flags); + + wake_up_interruptible(&vdev->cmd_wq); + + return 0; +} + +static int vhba_device_dequeue (struct vhba_device *vdev, struct scsi_cmnd *cmd) +{ + struct vhba_command *vcmd; + int retval; + unsigned long flags; + + spin_lock_irqsave(&vdev->cmd_lock, flags); + list_for_each_entry(vcmd, &vdev->cmd_list, entry) { + if (vcmd->cmd == cmd) { + list_del_init(&vcmd->entry); + break; + } + } + + /* command not found */ + if (&vcmd->entry == &vdev->cmd_list) { + spin_unlock_irqrestore(&vdev->cmd_lock, flags); + return SUCCESS; + } + + while (vcmd->status == VHBA_REQ_READING || vcmd->status == VHBA_REQ_WRITING) { + spin_unlock_irqrestore(&vdev->cmd_lock, flags); + scmd_dbg(cmd, "wait for I/O before aborting\n"); + schedule_timeout(1); + spin_lock_irqsave(&vdev->cmd_lock, flags); + } + + retval = (vcmd->status == VHBA_REQ_SENT) ? FAILED : SUCCESS; + + vhba_free_command(vcmd); + + spin_unlock_irqrestore(&vdev->cmd_lock, flags); + + return retval; +} + +static inline void vhba_scan_devices_add (struct vhba_host *vhost, int id) +{ + struct scsi_device *sdev; + + sdev = scsi_device_lookup(vhost->shost, 0, id, 0); + if (!sdev) { + scsi_add_device(vhost->shost, 0, id, 0); + } else { + dev_warn(&vhost->shost->shost_gendev, "tried to add an already-existing device 0:%d:0!\n", id); + scsi_device_put(sdev); + } +} + +static inline void vhba_scan_devices_remove (struct vhba_host *vhost, int id) +{ + struct scsi_device *sdev; + + sdev = scsi_device_lookup(vhost->shost, 0, id, 0); + if (sdev) { + scsi_remove_device(sdev); + scsi_device_put(sdev); + } else { + dev_warn(&vhost->shost->shost_gendev, "tried to remove non-existing device 0:%d:0!\n", id); + } +} + +static void vhba_scan_devices (struct work_struct *work) +{ + struct vhba_host *vhost = container_of(work, struct vhba_host, scan_devices); + unsigned long flags; + int id, change, exists; + + while (1) { + spin_lock_irqsave(&vhost->dev_lock, flags); + + id = find_first_bit(vhost->chgmap, vhost->shost->max_id); + if (id >= vhost->shost->max_id) { + spin_unlock_irqrestore(&vhost->dev_lock, flags); + break; + } + change = vhost->chgtype[id]; + exists = vhost->devices[id] != NULL; + + vhost->chgtype[id] = 0; + clear_bit(id, vhost->chgmap); + + spin_unlock_irqrestore(&vhost->dev_lock, flags); + + if (change < 0) { + dev_dbg(&vhost->shost->shost_gendev, "trying to remove target 0:%d:0\n", id); + vhba_scan_devices_remove(vhost, id); + } else if (change > 0) { + dev_dbg(&vhost->shost->shost_gendev, "trying to add target 0:%d:0\n", id); + vhba_scan_devices_add(vhost, id); + } else { + /* quick sequence of add/remove or remove/add; we determine + which one it was by checking if device structure exists */ + if (exists) { + /* remove followed by add: remove and (re)add */ + dev_dbg(&vhost->shost->shost_gendev, "trying to (re)add target 0:%d:0\n", id); + vhba_scan_devices_remove(vhost, id); + vhba_scan_devices_add(vhost, id); + } else { + /* add followed by remove: no-op */ + dev_dbg(&vhost->shost->shost_gendev, "no-op for target 0:%d:0\n", id); + } + } + } +} + +static int vhba_add_device (struct vhba_device *vdev) +{ + struct vhba_host *vhost; + int i; + unsigned long flags; + + vhost = platform_get_drvdata(&vhba_platform_device); + + vhba_device_get(vdev); + + spin_lock_irqsave(&vhost->dev_lock, flags); + if (vhost->num_devices >= vhost->shost->max_id) { + spin_unlock_irqrestore(&vhost->dev_lock, flags); + vhba_device_put(vdev); + return -EBUSY; + } + + for (i = 0; i < vhost->shost->max_id; i++) { + if (vhost->devices[i] == NULL) { + vdev->id = i; + vhost->devices[i] = vdev; + vhost->num_devices++; + set_bit(vdev->id, vhost->chgmap); + vhost->chgtype[vdev->id]++; + break; + } + } + spin_unlock_irqrestore(&vhost->dev_lock, flags); + + schedule_work(&vhost->scan_devices); + + return 0; +} + +static int vhba_remove_device (struct vhba_device *vdev) +{ + struct vhba_host *vhost; + unsigned long flags; + + vhost = platform_get_drvdata(&vhba_platform_device); + + spin_lock_irqsave(&vhost->dev_lock, flags); + set_bit(vdev->id, vhost->chgmap); + vhost->chgtype[vdev->id]--; + vhost->devices[vdev->id] = NULL; + vhost->num_devices--; + vdev->id = VHBA_INVALID_ID; + spin_unlock_irqrestore(&vhost->dev_lock, flags); + + vhba_device_put(vdev); + + schedule_work(&vhost->scan_devices); + + return 0; +} + +static struct vhba_device *vhba_lookup_device (int id) +{ + struct vhba_host *vhost; + struct vhba_device *vdev = NULL; + unsigned long flags; + + vhost = platform_get_drvdata(&vhba_platform_device); + + if (likely(id < vhost->shost->max_id)) { + spin_lock_irqsave(&vhost->dev_lock, flags); + vdev = vhost->devices[id]; + if (vdev) { + vdev = vhba_device_get(vdev); + } + + spin_unlock_irqrestore(&vhost->dev_lock, flags); + } + + return vdev; +} + +static struct vhba_command *vhba_alloc_command (void) +{ + struct vhba_host *vhost; + struct vhba_command *vcmd; + unsigned long flags; + int i; + + vhost = platform_get_drvdata(&vhba_platform_device); + + spin_lock_irqsave(&vhost->cmd_lock, flags); + + vcmd = vhost->commands + vhost->cmd_next++; + if (vcmd->status != VHBA_REQ_FREE) { + for (i = 0; i < vhost->shost->can_queue; i++) { + vcmd = vhost->commands + i; + + if (vcmd->status == VHBA_REQ_FREE) { + vhost->cmd_next = i + 1; + break; + } + } + + if (i == vhost->shost->can_queue) { + vcmd = NULL; + } + } + + if (vcmd) { + vcmd->status = VHBA_REQ_PENDING; + } + + vhost->cmd_next %= vhost->shost->can_queue; + + spin_unlock_irqrestore(&vhost->cmd_lock, flags); + + return vcmd; +} + +static void vhba_free_command (struct vhba_command *vcmd) +{ + struct vhba_host *vhost; + unsigned long flags; + + vhost = platform_get_drvdata(&vhba_platform_device); + + spin_lock_irqsave(&vhost->cmd_lock, flags); + vcmd->status = VHBA_REQ_FREE; + spin_unlock_irqrestore(&vhost->cmd_lock, flags); +} + +static int vhba_queuecommand_lck (struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) +{ + struct vhba_device *vdev; + int retval; + + scmd_dbg(cmd, "queue %lu\n", cmd->serial_number); + + vdev = vhba_lookup_device(cmd->device->id); + if (!vdev) { + scmd_dbg(cmd, "no such device\n"); + + cmd->result = DID_NO_CONNECT << 16; + done(cmd); + + return 0; + } + + cmd->scsi_done = done; + retval = vhba_device_queue(vdev, cmd); + + vhba_device_put(vdev); + + return retval; +} + +#ifdef DEF_SCSI_QCMD +DEF_SCSI_QCMD(vhba_queuecommand) +#else +#define vhba_queuecommand vhba_queuecommand_lck +#endif + +static int vhba_abort (struct scsi_cmnd *cmd) +{ + struct vhba_device *vdev; + int retval = SUCCESS; + + scmd_warn(cmd, "abort %lu\n", cmd->serial_number); + + vdev = vhba_lookup_device(cmd->device->id); + if (vdev) { + retval = vhba_device_dequeue(vdev, cmd); + vhba_device_put(vdev); + } else { + cmd->result = DID_NO_CONNECT << 16; + } + + return retval; +} + +static struct scsi_host_template vhba_template = { + .module = THIS_MODULE, + .name = "vhba", + .proc_name = "vhba", + .queuecommand = vhba_queuecommand, + .eh_abort_handler = vhba_abort, + .can_queue = VHBA_CAN_QUEUE, + .this_id = -1, + .cmd_per_lun = 1, + .max_sectors = VHBA_MAX_SECTORS_PER_IO, + .sg_tablesize = 256, +}; + +static ssize_t do_request (struct scsi_cmnd *cmd, char __user *buf, size_t buf_len) +{ + struct vhba_request vreq; + ssize_t ret; + + scmd_dbg(cmd, "request %lu, cdb 0x%x, bufflen %d, use_sg %d\n", + cmd->serial_number, cmd->cmnd[0], scsi_bufflen(cmd), scsi_sg_count(cmd)); + + ret = sizeof(vreq); + if (DATA_TO_DEVICE(cmd->sc_data_direction)) { + ret += scsi_bufflen(cmd); + } + + if (ret > buf_len) { + scmd_warn(cmd, "buffer too small (%zd < %zd) for a request\n", buf_len, ret); + return -EIO; + } + + vreq.tag = cmd->serial_number; + vreq.lun = cmd->device->lun; + memcpy(vreq.cdb, cmd->cmnd, MAX_COMMAND_SIZE); + vreq.cdb_len = cmd->cmd_len; + vreq.data_len = scsi_bufflen(cmd); + + if (copy_to_user(buf, &vreq, sizeof(vreq))) { + return -EFAULT; + } + + if (DATA_TO_DEVICE(cmd->sc_data_direction) && vreq.data_len) { + buf += sizeof(vreq); + + if (scsi_sg_count(cmd)) { + unsigned char buf_stack[64]; + unsigned char *kaddr, *uaddr, *kbuf; + struct scatterlist *sg = scsi_sglist(cmd); + int i; + + uaddr = (unsigned char *) buf; + + if (vreq.data_len > 64) { + kbuf = kmalloc(PAGE_SIZE, GFP_KERNEL); + } else { + kbuf = buf_stack; + } + + for (i = 0; i < scsi_sg_count(cmd); i++) { + size_t len = sg[i].length; + +#ifdef USE_SG_PAGE + kaddr = vhba_kmap_atomic(sg_page(&sg[i])); +#else + kaddr = vhba_kmap_atomic(sg[i].page); +#endif + memcpy(kbuf, kaddr + sg[i].offset, len); + vhba_kunmap_atomic(kaddr); + + if (copy_to_user(uaddr, kbuf, len)) { + if (kbuf != buf_stack) { + kfree(kbuf); + } + return -EFAULT; + } + uaddr += len; + } + + if (kbuf != buf_stack) { + kfree(kbuf); + } + } else { + if (copy_to_user(buf, scsi_sglist(cmd), vreq.data_len)) { + return -EFAULT; + } + } + } + + return ret; +} + +static ssize_t do_response (struct scsi_cmnd *cmd, const char __user *buf, size_t buf_len, struct vhba_response *res) +{ + ssize_t ret = 0; + + scmd_dbg(cmd, "response %lu, status %x, data len %d, use_sg %d\n", + cmd->serial_number, res->status, res->data_len, scsi_sg_count(cmd)); + + if (res->status) { + unsigned char sense_stack[SCSI_SENSE_BUFFERSIZE]; + + if (res->data_len > SCSI_SENSE_BUFFERSIZE) { + scmd_warn(cmd, "truncate sense (%d < %d)", SCSI_SENSE_BUFFERSIZE, res->data_len); + res->data_len = SCSI_SENSE_BUFFERSIZE; + } + + /* Copy via temporary buffer on stack in order to avoid problems + with PAX on grsecurity-enabled kernels */ + if (copy_from_user(sense_stack, buf, res->data_len)) { + return -EFAULT; + } + memcpy(cmd->sense_buffer, sense_stack, res->data_len); + + cmd->result = res->status; + + ret += res->data_len; + } else if (DATA_FROM_DEVICE(cmd->sc_data_direction) && scsi_bufflen(cmd)) { + size_t to_read; + + if (res->data_len > scsi_bufflen(cmd)) { + scmd_warn(cmd, "truncate data (%d < %d)\n", scsi_bufflen(cmd), res->data_len); + res->data_len = scsi_bufflen(cmd); + } + + to_read = res->data_len; + + if (scsi_sg_count(cmd)) { + unsigned char buf_stack[64]; + unsigned char *kaddr, *uaddr, *kbuf; + struct scatterlist *sg = scsi_sglist(cmd); + int i; + + uaddr = (unsigned char *)buf; + + if (res->data_len > 64) { + kbuf = kmalloc(PAGE_SIZE, GFP_KERNEL); + } else { + kbuf = buf_stack; + } + + for (i = 0; i < scsi_sg_count(cmd); i++) { + size_t len = (sg[i].length < to_read) ? sg[i].length : to_read; + + if (copy_from_user(kbuf, uaddr, len)) { + if (kbuf != buf_stack) { + kfree(kbuf); + } + return -EFAULT; + } + uaddr += len; + +#ifdef USE_SG_PAGE + kaddr = vhba_kmap_atomic(sg_page(&sg[i])); +#else + kaddr = vhba_kmap_atomic(sg[i].page); +#endif + memcpy(kaddr + sg[i].offset, kbuf, len); + vhba_kunmap_atomic(kaddr); + + to_read -= len; + if (to_read == 0) { + break; + } + } + + if (kbuf != buf_stack) { + kfree(kbuf); + } + } else { + if (copy_from_user(scsi_sglist(cmd), buf, res->data_len)) { + return -EFAULT; + } + + to_read -= res->data_len; + } + + scsi_set_resid(cmd, to_read); + + ret += res->data_len - to_read; + } + + return ret; +} + +static inline struct vhba_command *next_command (struct vhba_device *vdev) +{ + struct vhba_command *vcmd; + + list_for_each_entry(vcmd, &vdev->cmd_list, entry) { + if (vcmd->status == VHBA_REQ_PENDING) { + break; + } + } + + if (&vcmd->entry == &vdev->cmd_list) { + vcmd = NULL; + } + + return vcmd; +} + +static inline struct vhba_command *match_command (struct vhba_device *vdev, u32 tag) +{ + struct vhba_command *vcmd; + + list_for_each_entry(vcmd, &vdev->cmd_list, entry) { + if (vcmd->cmd->serial_number == tag) { + break; + } + } + + if (&vcmd->entry == &vdev->cmd_list) { + vcmd = NULL; + } + + return vcmd; +} + +static struct vhba_command *wait_command (struct vhba_device *vdev, unsigned long flags) +{ + struct vhba_command *vcmd; + DEFINE_WAIT(wait); + + while (!(vcmd = next_command(vdev))) { + if (signal_pending(current)) { + break; + } + + prepare_to_wait(&vdev->cmd_wq, &wait, TASK_INTERRUPTIBLE); + + spin_unlock_irqrestore(&vdev->cmd_lock, flags); + + schedule(); + + spin_lock_irqsave(&vdev->cmd_lock, flags); + } + + finish_wait(&vdev->cmd_wq, &wait); + if (vcmd) { + vcmd->status = VHBA_REQ_READING; + } + + return vcmd; +} + +static ssize_t vhba_ctl_read (struct file *file, char __user *buf, size_t buf_len, loff_t *offset) +{ + struct vhba_device *vdev; + struct vhba_command *vcmd; + ssize_t ret; + unsigned long flags; + + vdev = file->private_data; + + /* Get next command */ + if (file->f_flags & O_NONBLOCK) { + /* Non-blocking variant */ + spin_lock_irqsave(&vdev->cmd_lock, flags); + vcmd = next_command(vdev); + spin_unlock_irqrestore(&vdev->cmd_lock, flags); + + if (!vcmd) { + return -EWOULDBLOCK; + } + } else { + /* Blocking variant */ + spin_lock_irqsave(&vdev->cmd_lock, flags); + vcmd = wait_command(vdev, flags); + spin_unlock_irqrestore(&vdev->cmd_lock, flags); + + if (!vcmd) { + return -ERESTARTSYS; + } + } + + ret = do_request(vcmd->cmd, buf, buf_len); + + spin_lock_irqsave(&vdev->cmd_lock, flags); + if (ret >= 0) { + vcmd->status = VHBA_REQ_SENT; + *offset += ret; + } else { + vcmd->status = VHBA_REQ_PENDING; + } + + spin_unlock_irqrestore(&vdev->cmd_lock, flags); + + return ret; +} + +static ssize_t vhba_ctl_write (struct file *file, const char __user *buf, size_t buf_len, loff_t *offset) +{ + struct vhba_device *vdev; + struct vhba_command *vcmd; + struct vhba_response res; + ssize_t ret; + unsigned long flags; + + if (buf_len < sizeof(res)) { + return -EIO; + } + + if (copy_from_user(&res, buf, sizeof(res))) { + return -EFAULT; + } + + vdev = file->private_data; + + spin_lock_irqsave(&vdev->cmd_lock, flags); + vcmd = match_command(vdev, res.tag); + if (!vcmd || vcmd->status != VHBA_REQ_SENT) { + spin_unlock_irqrestore(&vdev->cmd_lock, flags); + DPRINTK("not expecting response\n"); + return -EIO; + } + vcmd->status = VHBA_REQ_WRITING; + spin_unlock_irqrestore(&vdev->cmd_lock, flags); + + ret = do_response(vcmd->cmd, buf + sizeof(res), buf_len - sizeof(res), &res); + + spin_lock_irqsave(&vdev->cmd_lock, flags); + if (ret >= 0) { + vcmd->cmd->scsi_done(vcmd->cmd); + ret += sizeof(res); + + /* don't compete with vhba_device_dequeue */ + if (!list_empty(&vcmd->entry)) { + list_del_init(&vcmd->entry); + vhba_free_command(vcmd); + } + } else { + vcmd->status = VHBA_REQ_SENT; + } + + spin_unlock_irqrestore(&vdev->cmd_lock, flags); + + return ret; +} + +static long vhba_ctl_ioctl (struct file *file, unsigned int cmd, unsigned long arg) +{ + struct vhba_device *vdev = file->private_data; + struct vhba_host *vhost; + struct scsi_device *sdev; + + switch (cmd) { + case 0xBEEF001: { + vhost = platform_get_drvdata(&vhba_platform_device); + sdev = scsi_device_lookup(vhost->shost, 0, vdev->id, 0); + + if (sdev) { + int id[4] = { + sdev->host->host_no, + sdev->channel, + sdev->id, + sdev->lun + }; + + scsi_device_put(sdev); + + if (copy_to_user((void *)arg, id, sizeof(id))) { + return -EFAULT; + } + + return 0; + } else { + return -ENODEV; + } + } + } + + return -ENOTTY; +} + +#ifdef CONFIG_COMPAT +static long vhba_ctl_compat_ioctl (struct file *file, unsigned int cmd, unsigned long arg) +{ + unsigned long compat_arg = (unsigned long)compat_ptr(arg); + return vhba_ctl_ioctl(file, cmd, compat_arg); +} +#endif + +static unsigned int vhba_ctl_poll (struct file *file, poll_table *wait) +{ + struct vhba_device *vdev = file->private_data; + unsigned int mask = 0; + unsigned long flags; + + poll_wait(file, &vdev->cmd_wq, wait); + + spin_lock_irqsave(&vdev->cmd_lock, flags); + if (next_command(vdev)) { + mask |= POLLIN | POLLRDNORM; + } + spin_unlock_irqrestore(&vdev->cmd_lock, flags); + + return mask; +} + +static int vhba_ctl_open (struct inode *inode, struct file *file) +{ + struct vhba_device *vdev; + int retval; + + DPRINTK("open\n"); + + /* check if vhba is probed */ + if (!platform_get_drvdata(&vhba_platform_device)) { + return -ENODEV; + } + + vdev = vhba_device_alloc(); + if (!vdev) { + return -ENOMEM; + } + + if (!(retval = vhba_add_device(vdev))) { + file->private_data = vdev; + } + + vhba_device_put(vdev); + + return retval; +} + +static int vhba_ctl_release (struct inode *inode, struct file *file) +{ + struct vhba_device *vdev; + struct vhba_command *vcmd; + unsigned long flags; + + DPRINTK("release\n"); + + vdev = file->private_data; + + vhba_device_get(vdev); + vhba_remove_device(vdev); + + spin_lock_irqsave(&vdev->cmd_lock, flags); + list_for_each_entry(vcmd, &vdev->cmd_list, entry) { + WARN_ON(vcmd->status == VHBA_REQ_READING || vcmd->status == VHBA_REQ_WRITING); + + scmd_warn(vcmd->cmd, "device released with command %lu\n", vcmd->cmd->serial_number); + vcmd->cmd->result = DID_NO_CONNECT << 16; + vcmd->cmd->scsi_done(vcmd->cmd); + + vhba_free_command(vcmd); + } + INIT_LIST_HEAD(&vdev->cmd_list); + spin_unlock_irqrestore(&vdev->cmd_lock, flags); + + vhba_device_put(vdev); + + return 0; +} + +static struct file_operations vhba_ctl_fops = { + .owner = THIS_MODULE, + .open = vhba_ctl_open, + .release = vhba_ctl_release, + .read = vhba_ctl_read, + .write = vhba_ctl_write, + .poll = vhba_ctl_poll, + .unlocked_ioctl = vhba_ctl_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = vhba_ctl_compat_ioctl, +#endif +}; + +static struct miscdevice vhba_miscdev = { + .minor = MISC_DYNAMIC_MINOR, + .name = "vhba_ctl", + .fops = &vhba_ctl_fops, +}; + +static int vhba_probe (struct platform_device *pdev) +{ + struct Scsi_Host *shost; + struct vhba_host *vhost; + int i; + + shost = scsi_host_alloc(&vhba_template, sizeof(struct vhba_host)); + if (!shost) { + return -ENOMEM; + } + + shost->max_id = VHBA_MAX_ID; + /* we don't support lun > 0 */ + shost->max_lun = 1; + shost->max_cmd_len = MAX_COMMAND_SIZE; + + vhost = (struct vhba_host *)shost->hostdata; + memset(vhost, 0, sizeof(*vhost)); + + vhost->shost = shost; + vhost->num_devices = 0; + spin_lock_init(&vhost->dev_lock); + spin_lock_init(&vhost->cmd_lock); + INIT_WORK(&vhost->scan_devices, vhba_scan_devices); + vhost->cmd_next = 0; + for (i = 0; i < vhost->shost->can_queue; i++) { + vhost->commands[i].status = VHBA_REQ_FREE; + } + + platform_set_drvdata(pdev, vhost); + + if (scsi_add_host(shost, &pdev->dev)) { + scsi_host_put(shost); + return -ENOMEM; + } + + return 0; +} + +static int vhba_remove (struct platform_device *pdev) +{ + struct vhba_host *vhost; + struct Scsi_Host *shost; + + vhost = platform_get_drvdata(pdev); + shost = vhost->shost; + + scsi_remove_host(shost); + scsi_host_put(shost); + + return 0; +} + +static void vhba_release (struct device * dev) +{ + return; +} + +static struct platform_device vhba_platform_device = { + .name = "vhba", + .id = -1, + .dev = { + .release = vhba_release, + }, +}; + +static struct platform_driver vhba_platform_driver = { + .driver = { + .owner = THIS_MODULE, + .name = "vhba", + }, + .probe = vhba_probe, + .remove = vhba_remove, +}; + +static int __init vhba_init (void) +{ + int ret; + + ret = platform_device_register(&vhba_platform_device); + if (ret < 0) { + return ret; + } + + ret = platform_driver_register(&vhba_platform_driver); + if (ret < 0) { + platform_device_unregister(&vhba_platform_device); + return ret; + } + + ret = misc_register(&vhba_miscdev); + if (ret < 0) { + platform_driver_unregister(&vhba_platform_driver); + platform_device_unregister(&vhba_platform_device); + return ret; + } + + return 0; +} + +static void __exit vhba_exit(void) +{ + misc_deregister(&vhba_miscdev); + platform_driver_unregister(&vhba_platform_driver); + platform_device_unregister(&vhba_platform_device); +} + +module_init(vhba_init); +module_exit(vhba_exit); + diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig index 0840d27381e..73aba9a3106 100644 --- a/drivers/tty/Kconfig +++ b/drivers/tty/Kconfig @@ -75,6 +75,19 @@ config VT_CONSOLE_SLEEP def_bool y depends on VT_CONSOLE && PM_SLEEP +config NR_TTY_DEVICES + int "Maximum tty device number" + depends on VT + range 12 63 + default 63 + ---help--- + This option is used to change the number of tty devices in /dev. + The default value is 63. The lowest number you can set is 12, + 63 is also the upper limit so we don't overrun the serial + consoles. + + If unsure, say 63. + config HW_CONSOLE bool depends on VT && !UML diff --git a/drivers/usb/gadget/function/u_serial.c b/drivers/usb/gadget/function/u_serial.c index 29436f75bbe..54356aedce8 100644 --- a/drivers/usb/gadget/function/u_serial.c +++ b/drivers/usb/gadget/function/u_serial.c @@ -1373,8 +1373,13 @@ void gserial_disconnect(struct gserial *gser) gser->ioport = NULL; if (port->port.count > 0 || port->openclose) { wake_up_interruptible(&port->drain_wait); +#if 0 if (port->port.tty) tty_hangup(port->port.tty); +#else + if (port->port.tty) + stop_tty(port->port.tty); +#endif } spin_unlock_irqrestore(&port->port_lock, flags); diff --git a/drivers/video/logo/Kconfig b/drivers/video/logo/Kconfig index d1f6196c8b9..396923856c2 100644 --- a/drivers/video/logo/Kconfig +++ b/drivers/video/logo/Kconfig @@ -15,56 +15,123 @@ config FB_LOGO_EXTRA depends on FB=y default y if SPU_BASE +config LOGO_RANDOM + bool "Select random available logo" + default y + help + Enable this option to use any available logo randomly at bootup. + +comment "Available logos" + +config LOGO_PCK_CLUT224 + bool "224-color Zen Kernel/Meditating Tux logo" + default y + config LOGO_LINUX_MONO bool "Standard black and white Linux logo" - default y + default n config LOGO_LINUX_VGA16 bool "Standard 16-color Linux logo" - default y + default n config LOGO_LINUX_CLUT224 bool "Standard 224-color Linux logo" - default y + default n + +config LOGO_OLDPCK_CLUT224 + bool "224-color Old Zen Kernel logo" + depends on LOGO + default n + +config LOGO_ARCH_CLUT224 + bool "224-color Arch Linux logo" + depends on LOGO + default n + +config LOGO_GENTOO_CLUT224 + bool "224-color Gentoo Linux logo" + depends on LOGO + default n + +config LOGO_EXHERBO_CLUT224 + bool "224-color Exherbo Linux logo" + depends on LOGO + default n + +config LOGO_SLACKWARE_CLUT224 + bool "224-color Slackware Linux logo" + depends on LOGO + default n + +config LOGO_DEBIAN_CLUT224 + bool "224-color Debian Linux logo" + depends on LOGO + default n + +config LOGO_FEDORASIMPLE_CLUT224 + bool "224-color Fedora Simple Linux logo" + depends on LOGO + default n + +config LOGO_FEDORAGLOSSY_CLUT224 + bool "224-color Fedora Glossy Linux logo" + depends on LOGO + default n + +config LOGO_TITS_CLUT224 + bool "224-color Tits logo" + depends on LOGO + default n + +config LOGO_BSD_CLUT224 + bool "224-color BSD Devil logo" + depends on LOGO + default n + +config LOGO_FBSD_CLUT224 + bool "224-color FreeBSD logo" + depends on LOGO + default n config LOGO_DEC_CLUT224 bool "224-color Digital Equipment Corporation Linux logo" depends on MACH_DECSTATION || ALPHA - default y + default n config LOGO_MAC_CLUT224 bool "224-color Macintosh Linux logo" depends on MAC - default y + default n config LOGO_PARISC_CLUT224 bool "224-color PA-RISC Linux logo" depends on PARISC - default y + default n config LOGO_SGI_CLUT224 bool "224-color SGI Linux logo" depends on SGI_IP22 || SGI_IP27 || SGI_IP32 - default y + default n config LOGO_SUN_CLUT224 bool "224-color Sun Linux logo" depends on SPARC - default y + default n config LOGO_SUPERH_MONO bool "Black and white SuperH Linux logo" depends on SUPERH - default y + default n config LOGO_SUPERH_VGA16 bool "16-color SuperH Linux logo" depends on SUPERH - default y + default n config LOGO_SUPERH_CLUT224 bool "224-color SuperH Linux logo" depends on SUPERH - default y + default n endif # LOGO diff --git a/drivers/video/logo/Makefile b/drivers/video/logo/Makefile index 228a89b9bdd..e1efac71c1d 100644 --- a/drivers/video/logo/Makefile +++ b/drivers/video/logo/Makefile @@ -5,6 +5,18 @@ obj-$(CONFIG_LOGO) += logo.o obj-$(CONFIG_LOGO_LINUX_MONO) += logo_linux_mono.o obj-$(CONFIG_LOGO_LINUX_VGA16) += logo_linux_vga16.o obj-$(CONFIG_LOGO_LINUX_CLUT224) += logo_linux_clut224.o +obj-$(CONFIG_LOGO_PCK_CLUT224) += logo_zen_clut224.o +obj-$(CONFIG_LOGO_OLDPCK_CLUT224) += logo_oldzen_clut224.o +obj-$(CONFIG_LOGO_ARCH_CLUT224) += logo_arch_clut224.o +obj-$(CONFIG_LOGO_GENTOO_CLUT224) += logo_gentoo_clut224.o +obj-$(CONFIG_LOGO_EXHERBO_CLUT224) += logo_exherbo_clut224.o +obj-$(CONFIG_LOGO_SLACKWARE_CLUT224) += logo_slackware_clut224.o +obj-$(CONFIG_LOGO_DEBIAN_CLUT224) += logo_debian_clut224.o +obj-$(CONFIG_LOGO_FEDORASIMPLE_CLUT224) += logo_fedorasimple_clut224.o +obj-$(CONFIG_LOGO_FEDORAGLOSSY_CLUT224) += logo_fedoraglossy_clut224.o +obj-$(CONFIG_LOGO_TITS_CLUT224) += logo_tits_clut224.o +obj-$(CONFIG_LOGO_BSD_CLUT224) += logo_bsd_clut224.o +obj-$(CONFIG_LOGO_FBSD_CLUT224) += logo_fbsd_clut224.o obj-$(CONFIG_LOGO_DEC_CLUT224) += logo_dec_clut224.o obj-$(CONFIG_LOGO_MAC_CLUT224) += logo_mac_clut224.o obj-$(CONFIG_LOGO_PARISC_CLUT224) += logo_parisc_clut224.o diff --git a/drivers/video/logo/logo.c b/drivers/video/logo/logo.c index 36aa050f9a2..edee354a2fe 100644 --- a/drivers/video/logo/logo.c +++ b/drivers/video/logo/logo.c @@ -13,6 +13,10 @@ #include #include +#ifdef CONFIG_LOGO_RANDOM +#include +#endif + #ifdef CONFIG_M68K #include #endif @@ -21,6 +25,93 @@ static bool nologo; module_param(nologo, bool, 0); MODULE_PARM_DESC(nologo, "Disables startup logo"); +/* Monochromatic logos */ +static const struct linux_logo *logo_mono[] = { +#ifdef CONFIG_LOGO_LINUX_MONO + &logo_linux_mono, /* Generic Linux logo */ +#endif +#ifdef CONFIG_LOGO_SUPERH_MONO + &logo_superh_mono, /* SuperH Linux logo */ +#endif +}; + +/* 16-colour logos */ +static const struct linux_logo *logo_vga16[] = { +#ifdef CONFIG_LOGO_LINUX_VGA16 + &logo_linux_vga16, /* Generic Linux logo */ +#endif +#ifdef CONFIG_LOGO_SUPERH_VGA16 + &logo_superh_vga16, /* SuperH Linux logo */ +#endif +}; + +/* 224-colour logos */ +static const struct linux_logo *logo_clut224[] = { +#ifdef CONFIG_LOGO_LINUX_CLUT224 + &logo_linux_clut224, /* Generic Linux logo */ +#endif +#ifdef CONFIG_LOGO_DEC_CLUT224 + &logo_dec_clut224, /* DEC Linux logo on MIPS/MIPS64 or ALPHA */ +#endif +#ifdef CONFIG_LOGO_MAC_CLUT224 + &logo_mac_clut224, /* Macintosh Linux logo on m68k */ +#endif +#ifdef CONFIG_LOGO_PARISC_CLUT224 + &logo_parisc_clut224, /* PA-RISC Linux logo */ +#endif +#ifdef CONFIG_LOGO_SGI_CLUT224 + &logo_sgi_clut224, /* SGI Linux logo on MIPS/MIPS64 */ +#endif +#ifdef CONFIG_LOGO_SUN_CLUT224 + &logo_sun_clut224, /* Sun Linux logo */ +#endif +#ifdef CONFIG_LOGO_SUPERH_CLUT224 + &logo_superh_clut224, /* SuperH Linux logo */ +#endif +#ifdef CONFIG_LOGO_PCK_CLUT224 + &logo_zen_clut224, /* Zen-Kernel logo */ +#endif +#ifdef CONFIG_LOGO_OLDPCK_CLUT224 + &logo_oldzen_clut224, /* Old Zen-Kernel logo */ +#endif +#ifdef CONFIG_LOGO_ARCH_CLUT224 + &logo_arch_clut224, /* Arch Linux logo */ +#endif +#ifdef CONFIG_LOGO_GENTOO_CLUT224 + &logo_gentoo_clut224, /* Gentoo Linux logo */ +#endif +#ifdef CONFIG_LOGO_EXHERBO_CLUT224 + &logo_exherbo_clut224, /* Exherbo Linux logo */ +#endif +#ifdef CONFIG_LOGO_SLACKWARE_CLUT224 + &logo_slackware_clut224, /* Slackware Linux logo */ +#endif +#ifdef CONFIG_LOGO_DEBIAN_CLUT224 + &logo_debian_clut224, /* Debian Linux logo */ +#endif +#ifdef CONFIG_LOGO_FEDORASIMPLE_CLUT224 + &logo_fedorasimple_clut224, /* Fedora Simple logo */ +#endif +#ifdef CONFIG_LOGO_FEDORAGLOSSY_CLUT224 + &logo_fedoraglossy_clut224, /* Fedora Glossy logo */ +#endif +#ifdef CONFIG_LOGO_TITS_CLUT224 + &logo_tits_clut224, /* Tits logo */ +#endif +#ifdef CONFIG_LOGO_BSD_CLUT224 + &logo_bsd_clut224, /* BSD logo */ +#endif +#ifdef CONFIG_LOGO_FBSD_CLUT224 + &logo_fbsd_clut224, /* Free BSD logo */ +#endif +}; + +#ifdef CONFIG_LOGO_RANDOM +#define LOGO_INDEX(s) (get_random_int() % s) +#else +#define LOGO_INDEX(s) (s - 1) +#endif + /* * Logos are located in the initdata, and will be freed in kernel_init. * Use late_init to mark the logos as freed to prevent any further use. @@ -43,63 +134,30 @@ late_initcall_sync(fb_logo_late_init); const struct linux_logo * __ref fb_find_logo(int depth) { const struct linux_logo *logo = NULL; + const struct linux_logo **array = NULL; + unsigned int size; if (nologo || logos_freed) return NULL; + /* Select logo array */ if (depth >= 1) { -#ifdef CONFIG_LOGO_LINUX_MONO - /* Generic Linux logo */ - logo = &logo_linux_mono; -#endif -#ifdef CONFIG_LOGO_SUPERH_MONO - /* SuperH Linux logo */ - logo = &logo_superh_mono; -#endif + array = logo_mono; + size = ARRAY_SIZE(logo_mono); } - if (depth >= 4) { -#ifdef CONFIG_LOGO_LINUX_VGA16 - /* Generic Linux logo */ - logo = &logo_linux_vga16; -#endif -#ifdef CONFIG_LOGO_SUPERH_VGA16 - /* SuperH Linux logo */ - logo = &logo_superh_vga16; -#endif + array = logo_vga16; + size = ARRAY_SIZE(logo_vga16); } - if (depth >= 8) { -#ifdef CONFIG_LOGO_LINUX_CLUT224 - /* Generic Linux logo */ - logo = &logo_linux_clut224; -#endif -#ifdef CONFIG_LOGO_DEC_CLUT224 - /* DEC Linux logo on MIPS/MIPS64 or ALPHA */ - logo = &logo_dec_clut224; -#endif -#ifdef CONFIG_LOGO_MAC_CLUT224 - /* Macintosh Linux logo on m68k */ - if (MACH_IS_MAC) - logo = &logo_mac_clut224; -#endif -#ifdef CONFIG_LOGO_PARISC_CLUT224 - /* PA-RISC Linux logo */ - logo = &logo_parisc_clut224; -#endif -#ifdef CONFIG_LOGO_SGI_CLUT224 - /* SGI Linux logo on MIPS/MIPS64 */ - logo = &logo_sgi_clut224; -#endif -#ifdef CONFIG_LOGO_SUN_CLUT224 - /* Sun Linux logo */ - logo = &logo_sun_clut224; -#endif -#ifdef CONFIG_LOGO_SUPERH_CLUT224 - /* SuperH Linux logo */ - logo = &logo_superh_clut224; -#endif + array = logo_clut224; + size = ARRAY_SIZE(logo_clut224); } + + /* We've got some logos to display */ + if (array && size) + logo = array[LOGO_INDEX(size)]; + return logo; } EXPORT_SYMBOL_GPL(fb_find_logo); diff --git a/drivers/video/logo/logo_arch_clut224.ppm b/drivers/video/logo/logo_arch_clut224.ppm new file mode 100644 index 00000000000..e4d8daa69d2 --- /dev/null +++ b/drivers/video/logo/logo_arch_clut224.ppm @@ -0,0 +1,43204 @@ +P3 +# CREATOR: GIMP PNM Filter Version 1.1 +120 120 +255 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +10 +110 +160 +33 +122 +166 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +7 +146 +208 +27 +151 +213 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +4 +45 +68 +13 +147 +209 +13 +147 +209 +17 +73 +101 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +24 +137 +199 +13 +147 +209 +13 +147 +209 +54 +155 +212 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +7 +10 +13 +147 +209 +13 +147 +209 +13 +147 +209 +48 +164 +219 +3 +23 +31 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +33 +133 +182 +13 +147 +209 +13 +147 +209 +13 +147 +209 +24 +150 +212 +40 +160 +215 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +65 +166 +216 +5 +11 +14 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +3 +76 +109 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +65 +166 +216 +54 +136 +181 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +42 +161 +216 +48 +164 +219 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +9 +18 +24 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +17 +148 +210 +48 +164 +219 +40 +90 +118 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +37 +132 +189 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +65 +166 +216 +48 +164 +219 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +48 +164 +219 +48 +164 +219 +11 +35 +49 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +25 +87 +120 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +27 +151 +213 +62 +163 +214 +62 +163 +214 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +65 +166 +216 +48 +164 +219 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +17 +148 +210 +17 +148 +210 +17 +148 +210 +17 +148 +210 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +62 +163 +214 +48 +164 +219 +36 +86 +115 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +10 +110 +160 +21 +149 +211 +21 +149 +211 +17 +148 +210 +17 +148 +210 +17 +148 +210 +17 +148 +210 +17 +148 +210 +13 +147 +209 +13 +147 +209 +13 +147 +209 +49 +151 +208 +48 +164 +219 +65 +166 +216 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +17 +148 +210 +24 +150 +212 +21 +149 +211 +13 +147 +209 +13 +147 +209 +21 +149 +211 +17 +148 +210 +17 +148 +210 +17 +148 +210 +17 +148 +210 +17 +148 +210 +13 +147 +209 +65 +166 +216 +65 +166 +216 +11 +35 +49 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +74 +106 +31 +155 +211 +24 +150 +212 +24 +150 +212 +27 +151 +213 +17 +148 +210 +21 +149 +211 +13 +147 +209 +13 +147 +209 +49 +151 +208 +21 +149 +211 +17 +148 +210 +17 +148 +210 +48 +164 +219 +65 +166 +216 +62 +163 +214 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +24 +150 +212 +17 +148 +210 +31 +155 +211 +17 +148 +210 +17 +148 +210 +2 +145 +206 +31 +155 +211 +31 +155 +211 +27 +151 +213 +21 +149 +211 +49 +151 +208 +21 +149 +211 +21 +149 +211 +49 +151 +208 +65 +166 +216 +65 +166 +216 +5 +18 +28 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +2 +27 +39 +27 +151 +213 +27 +151 +213 +49 +151 +208 +24 +150 +212 +24 +150 +212 +31 +155 +211 +24 +150 +212 +21 +149 +211 +24 +150 +212 +27 +151 +213 +27 +151 +213 +2 +145 +206 +21 +149 +211 +21 +149 +211 +72 +171 +221 +62 +163 +214 +48 +154 +203 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +143 +204 +31 +155 +211 +31 +155 +211 +24 +150 +212 +31 +155 +211 +27 +151 +213 +24 +150 +212 +24 +150 +212 +31 +155 +211 +31 +155 +211 +21 +149 +211 +31 +155 +211 +31 +155 +211 +21 +149 +211 +27 +151 +213 +62 +163 +214 +67 +167 +217 +67 +167 +217 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +31 +155 +211 +31 +155 +211 +31 +155 +211 +31 +155 +211 +24 +150 +212 +24 +150 +212 +24 +150 +212 +21 +149 +211 +31 +155 +211 +29 +152 +214 +21 +149 +211 +17 +148 +210 +31 +155 +211 +17 +148 +210 +24 +150 +212 +49 +151 +208 +67 +167 +217 +67 +167 +217 +49 +132 +177 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +29 +108 +153 +51 +153 +210 +51 +153 +210 +31 +155 +211 +31 +155 +211 +24 +150 +212 +24 +150 +212 +31 +155 +211 +31 +155 +211 +24 +150 +212 +24 +150 +212 +27 +151 +213 +27 +151 +213 +49 +151 +208 +21 +149 +211 +21 +149 +211 +27 +151 +213 +67 +167 +217 +67 +167 +217 +67 +167 +217 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +49 +151 +208 +31 +155 +211 +51 +153 +210 +29 +152 +214 +32 +153 +215 +32 +153 +215 +29 +152 +214 +31 +155 +211 +24 +150 +212 +24 +150 +212 +24 +150 +212 +31 +155 +211 +24 +150 +212 +31 +155 +211 +31 +155 +211 +27 +151 +213 +24 +150 +212 +62 +163 +214 +68 +168 +218 +68 +168 +218 +40 +90 +118 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +71 +103 +33 +156 +212 +31 +155 +211 +31 +155 +211 +31 +155 +211 +49 +151 +208 +29 +152 +214 +31 +155 +211 +31 +155 +211 +32 +153 +215 +24 +150 +212 +24 +150 +212 +31 +155 +211 +31 +155 +211 +24 +150 +212 +31 +155 +211 +31 +155 +211 +24 +150 +212 +29 +152 +214 +78 +167 +212 +68 +168 +218 +65 +166 +216 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +31 +155 +211 +31 +155 +211 +33 +156 +212 +32 +153 +215 +32 +153 +215 +51 +153 +210 +51 +153 +210 +31 +155 +211 +49 +151 +208 +29 +152 +214 +29 +152 +214 +31 +155 +211 +32 +153 +215 +31 +155 +211 +31 +155 +211 +24 +150 +212 +24 +150 +212 +24 +150 +212 +31 +155 +211 +68 +168 +218 +69 +169 +219 +71 +170 +220 +16 +56 +73 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +11 +35 +49 +33 +156 +212 +33 +156 +212 +53 +154 +211 +53 +154 +211 +31 +155 +211 +31 +155 +211 +31 +155 +211 +51 +153 +210 +31 +155 +211 +31 +155 +211 +31 +155 +211 +51 +153 +210 +51 +153 +210 +29 +152 +214 +51 +153 +210 +31 +155 +211 +31 +155 +211 +24 +150 +212 +31 +155 +211 +31 +155 +211 +69 +169 +219 +69 +169 +219 +65 +166 +216 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +49 +151 +208 +32 +153 +215 +33 +156 +212 +32 +153 +215 +54 +155 +212 +31 +155 +211 +32 +153 +215 +32 +153 +215 +33 +156 +212 +31 +155 +211 +32 +153 +215 +29 +152 +214 +51 +153 +210 +32 +153 +215 +31 +155 +211 +31 +155 +211 +29 +152 +214 +31 +155 +211 +51 +153 +210 +31 +155 +211 +31 +155 +211 +68 +168 +218 +82 +170 +215 +69 +169 +219 +12 +30 +39 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +18 +23 +54 +155 +212 +54 +155 +212 +33 +156 +212 +33 +156 +212 +33 +156 +212 +33 +156 +212 +38 +159 +214 +53 +154 +211 +53 +154 +211 +33 +156 +212 +31 +155 +211 +31 +155 +211 +33 +156 +212 +32 +153 +215 +32 +153 +215 +31 +155 +211 +31 +155 +211 +51 +153 +210 +31 +155 +211 +31 +155 +211 +31 +155 +211 +44 +162 +217 +82 +170 +215 +71 +170 +220 +62 +163 +214 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +41 +147 +203 +42 +161 +216 +38 +159 +214 +54 +155 +212 +38 +159 +214 +38 +159 +214 +32 +153 +215 +33 +156 +212 +32 +153 +215 +32 +153 +215 +54 +155 +212 +54 +155 +212 +32 +153 +215 +31 +155 +211 +31 +155 +211 +32 +153 +215 +32 +153 +215 +33 +156 +212 +31 +155 +211 +49 +151 +208 +31 +155 +211 +49 +151 +208 +32 +153 +215 +72 +171 +221 +71 +170 +220 +71 +170 +220 +8 +27 +35 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +2 +9 +12 +42 +161 +216 +42 +161 +216 +54 +155 +212 +54 +155 +212 +42 +161 +216 +54 +155 +212 +54 +155 +212 +38 +159 +214 +38 +159 +214 +38 +159 +214 +54 +155 +212 +38 +159 +214 +33 +156 +212 +33 +156 +212 +33 +156 +212 +53 +154 +211 +32 +153 +215 +32 +153 +215 +31 +155 +211 +33 +156 +212 +32 +153 +215 +32 +153 +215 +32 +153 +215 +62 +163 +214 +82 +170 +215 +72 +171 +221 +55 +159 +209 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +42 +139 +189 +44 +162 +217 +44 +162 +217 +54 +155 +212 +42 +161 +216 +42 +161 +216 +54 +155 +212 +54 +155 +212 +42 +161 +216 +38 +159 +214 +54 +155 +212 +54 +155 +212 +40 +160 +215 +54 +155 +212 +33 +156 +212 +38 +159 +214 +54 +155 +212 +54 +155 +212 +33 +156 +212 +33 +156 +212 +53 +154 +211 +33 +156 +212 +31 +155 +211 +31 +155 +211 +54 +155 +212 +72 +171 +221 +72 +171 +221 +71 +170 +220 +5 +11 +14 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +44 +162 +217 +55 +159 +209 +54 +155 +212 +54 +155 +212 +54 +155 +212 +54 +155 +212 +54 +155 +212 +42 +161 +216 +42 +161 +216 +42 +161 +216 +42 +161 +216 +42 +161 +216 +54 +155 +212 +38 +159 +214 +38 +159 +214 +38 +159 +214 +38 +159 +214 +38 +159 +214 +33 +156 +212 +54 +155 +212 +54 +155 +212 +33 +156 +212 +53 +154 +211 +32 +153 +215 +33 +156 +212 +68 +168 +218 +74 +172 +223 +72 +171 +221 +48 +154 +203 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +13 +51 +74 +40 +160 +215 +55 +159 +209 +42 +161 +216 +42 +161 +216 +54 +155 +212 +40 +160 +215 +62 +163 +214 +44 +162 +217 +42 +161 +216 +54 +155 +212 +54 +155 +212 +42 +161 +216 +54 +155 +212 +54 +155 +212 +54 +155 +212 +54 +155 +212 +54 +155 +212 +38 +159 +214 +54 +155 +212 +40 +160 +215 +32 +153 +215 +54 +155 +212 +33 +156 +212 +38 +159 +214 +33 +156 +212 +31 +155 +211 +83 +172 +217 +74 +172 +223 +82 +170 +215 +0 +7 +10 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +24 +70 +92 +48 +164 +219 +62 +163 +214 +54 +155 +212 +54 +155 +212 +55 +159 +209 +46 +163 +218 +54 +155 +212 +46 +163 +218 +55 +159 +209 +54 +155 +212 +54 +155 +212 +42 +161 +216 +42 +161 +216 +42 +161 +216 +42 +161 +216 +42 +161 +216 +54 +155 +212 +38 +159 +214 +54 +155 +212 +38 +159 +214 +40 +160 +215 +32 +153 +215 +54 +155 +212 +54 +155 +212 +33 +156 +212 +72 +171 +221 +74 +172 +223 +74 +172 +223 +53 +145 +195 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +23 +77 +105 +44 +162 +217 +48 +164 +219 +44 +162 +217 +54 +155 +212 +42 +161 +216 +46 +163 +218 +62 +163 +214 +40 +160 +215 +55 +159 +209 +44 +162 +217 +40 +160 +215 +33 +156 +212 +54 +155 +212 +54 +155 +212 +42 +161 +216 +54 +155 +212 +42 +161 +216 +42 +161 +216 +42 +161 +216 +54 +155 +212 +38 +159 +214 +38 +159 +214 +40 +160 +215 +40 +160 +215 +33 +156 +212 +74 +172 +223 +83 +172 +217 +74 +172 +223 +0 +7 +10 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +36 +86 +115 +48 +164 +219 +44 +162 +217 +44 +162 +217 +54 +155 +212 +62 +163 +214 +46 +163 +218 +40 +160 +215 +42 +161 +216 +44 +162 +217 +46 +163 +218 +55 +159 +209 +44 +162 +217 +33 +156 +212 +55 +159 +209 +42 +161 +216 +54 +155 +212 +42 +161 +216 +42 +161 +216 +54 +155 +212 +42 +161 +216 +42 +161 +216 +38 +159 +214 +54 +155 +212 +38 +159 +214 +74 +172 +223 +74 +172 +223 +86 +174 +219 +54 +136 +181 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +23 +88 +115 +5 +18 +28 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +24 +70 +92 +62 +163 +214 +54 +155 +212 +62 +163 +214 +44 +162 +217 +54 +155 +212 +48 +164 +219 +48 +164 +219 +54 +155 +212 +42 +161 +216 +48 +164 +219 +42 +161 +216 +54 +155 +212 +40 +160 +215 +54 +155 +212 +40 +160 +215 +40 +160 +215 +54 +155 +212 +42 +161 +216 +42 +161 +216 +42 +161 +216 +42 +161 +216 +42 +161 +216 +54 +155 +212 +42 +161 +216 +74 +172 +223 +86 +174 +219 +83 +172 +217 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +62 +163 +214 +67 +167 +217 +36 +86 +115 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +16 +56 +73 +62 +163 +214 +46 +163 +218 +62 +163 +214 +44 +162 +217 +46 +163 +218 +44 +162 +217 +62 +163 +214 +44 +162 +217 +46 +163 +218 +54 +155 +212 +54 +155 +212 +42 +161 +216 +55 +159 +209 +54 +155 +212 +55 +159 +209 +54 +155 +212 +55 +159 +209 +54 +155 +212 +42 +161 +216 +54 +155 +212 +42 +161 +216 +54 +155 +212 +42 +161 +216 +74 +172 +223 +86 +174 +219 +86 +174 +219 +57 +132 +172 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +23 +88 +115 +62 +163 +214 +48 +164 +219 +48 +164 +219 +42 +151 +200 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +18 +42 +55 +44 +162 +217 +62 +163 +214 +48 +164 +219 +62 +163 +214 +54 +155 +212 +44 +162 +217 +65 +166 +216 +46 +163 +218 +48 +164 +219 +44 +162 +217 +62 +163 +214 +42 +161 +216 +62 +163 +214 +46 +163 +218 +44 +162 +217 +54 +155 +212 +55 +159 +209 +54 +155 +212 +40 +160 +215 +40 +160 +215 +54 +155 +212 +42 +161 +216 +55 +159 +209 +86 +174 +219 +86 +174 +219 +85 +173 +218 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +62 +163 +214 +62 +163 +214 +62 +163 +214 +48 +164 +219 +60 +162 +212 +62 +163 +214 +16 +56 +73 +0 +2 +0 +0 +2 +0 +0 +2 +0 +7 +16 +23 +62 +163 +214 +44 +162 +217 +62 +163 +214 +46 +163 +218 +48 +164 +219 +62 +163 +214 +46 +163 +218 +62 +163 +214 +62 +163 +214 +44 +162 +217 +67 +167 +217 +44 +162 +217 +54 +155 +212 +54 +155 +212 +42 +161 +216 +48 +164 +219 +54 +155 +212 +54 +155 +212 +40 +160 +215 +42 +161 +216 +62 +163 +214 +40 +160 +215 +74 +172 +223 +90 +177 +222 +87 +175 +220 +28 +73 +96 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +19 +48 +67 +48 +164 +219 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +48 +164 +219 +60 +162 +212 +62 +163 +214 +8 +27 +35 +0 +2 +0 +0 +2 +0 +0 +1 +4 +54 +155 +212 +67 +167 +217 +68 +168 +218 +65 +166 +216 +62 +163 +214 +62 +163 +214 +65 +166 +216 +62 +163 +214 +62 +163 +214 +44 +162 +217 +48 +164 +219 +54 +155 +212 +62 +163 +214 +48 +164 +219 +62 +163 +214 +54 +155 +212 +42 +161 +216 +54 +155 +212 +46 +163 +218 +42 +161 +216 +42 +161 +216 +54 +155 +212 +87 +175 +220 +87 +175 +220 +85 +173 +218 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +67 +167 +217 +65 +166 +216 +67 +167 +217 +65 +166 +216 +62 +163 +214 +65 +166 +216 +48 +164 +219 +65 +166 +216 +62 +163 +214 +65 +166 +216 +53 +145 +195 +0 +7 +10 +0 +2 +0 +0 +4 +7 +58 +151 +195 +54 +155 +212 +48 +164 +219 +69 +169 +219 +48 +164 +219 +46 +163 +218 +48 +164 +219 +46 +163 +218 +54 +155 +212 +62 +163 +214 +54 +155 +212 +44 +162 +217 +42 +161 +216 +62 +163 +214 +48 +164 +219 +44 +162 +217 +54 +155 +212 +44 +162 +217 +54 +155 +212 +38 +159 +214 +48 +164 +219 +83 +172 +217 +90 +177 +222 +90 +177 +222 +30 +93 +120 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +22 +45 +59 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +72 +171 +221 +65 +166 +216 +48 +164 +219 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +33 +133 +182 +0 +4 +7 +0 +1 +4 +34 +104 +137 +62 +163 +214 +62 +163 +214 +62 +163 +214 +62 +163 +214 +67 +167 +217 +69 +169 +219 +62 +163 +214 +62 +163 +214 +48 +164 +219 +62 +163 +214 +62 +163 +214 +62 +163 +214 +48 +164 +219 +65 +166 +216 +42 +161 +216 +48 +164 +219 +48 +164 +219 +44 +162 +217 +55 +159 +209 +38 +159 +214 +88 +176 +221 +88 +176 +221 +85 +173 +218 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +65 +166 +216 +67 +167 +217 +67 +167 +217 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +67 +167 +217 +62 +163 +214 +65 +166 +216 +62 +163 +214 +48 +164 +219 +68 +168 +218 +36 +115 +153 +0 +4 +7 +17 +35 +44 +62 +163 +214 +65 +166 +216 +62 +163 +214 +48 +164 +219 +48 +164 +219 +62 +163 +214 +67 +167 +217 +68 +168 +218 +62 +163 +214 +65 +166 +216 +62 +163 +214 +44 +162 +217 +65 +166 +216 +62 +163 +214 +62 +163 +214 +48 +164 +219 +62 +163 +214 +44 +162 +217 +54 +155 +212 +72 +171 +221 +88 +176 +221 +88 +176 +221 +40 +90 +118 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +26 +49 +63 +68 +168 +218 +67 +167 +217 +67 +167 +217 +67 +167 +217 +67 +167 +217 +67 +167 +217 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +67 +167 +217 +48 +164 +219 +48 +164 +219 +65 +166 +216 +62 +163 +214 +31 +134 +178 +5 +11 +14 +48 +154 +203 +60 +162 +212 +48 +164 +219 +62 +163 +214 +48 +164 +219 +68 +168 +218 +48 +164 +219 +62 +163 +214 +62 +163 +214 +68 +168 +218 +62 +163 +214 +48 +164 +219 +65 +166 +216 +54 +155 +212 +62 +163 +214 +44 +162 +217 +48 +164 +219 +62 +163 +214 +42 +161 +216 +90 +177 +222 +88 +176 +221 +85 +173 +218 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +62 +163 +214 +68 +168 +218 +68 +168 +218 +68 +168 +218 +68 +168 +218 +67 +167 +217 +67 +167 +217 +67 +167 +217 +67 +167 +217 +67 +167 +217 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +67 +167 +217 +65 +166 +216 +62 +163 +214 +62 +163 +214 +48 +154 +203 +53 +127 +166 +48 +164 +219 +65 +166 +216 +62 +163 +214 +48 +164 +219 +62 +163 +214 +54 +155 +212 +69 +169 +219 +48 +164 +219 +67 +167 +217 +48 +164 +219 +62 +163 +214 +46 +163 +218 +62 +163 +214 +62 +163 +214 +46 +163 +218 +46 +163 +218 +46 +163 +218 +74 +172 +223 +90 +177 +222 +90 +177 +222 +25 +99 +131 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +22 +45 +59 +78 +167 +212 +78 +167 +212 +69 +169 +219 +68 +168 +218 +68 +168 +218 +68 +168 +218 +68 +168 +218 +68 +168 +218 +67 +167 +217 +67 +167 +217 +67 +167 +217 +67 +167 +217 +67 +167 +217 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +48 +164 +219 +48 +164 +219 +62 +163 +214 +48 +164 +219 +62 +163 +214 +65 +166 +216 +48 +164 +219 +48 +164 +219 +60 +162 +212 +48 +164 +219 +64 +165 +215 +62 +163 +214 +71 +170 +220 +48 +164 +219 +62 +163 +214 +48 +164 +219 +62 +163 +214 +62 +163 +214 +44 +162 +217 +62 +163 +214 +62 +163 +214 +90 +177 +222 +90 +177 +222 +74 +172 +223 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +78 +167 +212 +71 +170 +220 +69 +169 +219 +69 +169 +219 +69 +169 +219 +69 +169 +219 +69 +169 +219 +68 +168 +218 +68 +168 +218 +68 +168 +218 +68 +168 +218 +68 +168 +218 +67 +167 +217 +67 +167 +217 +67 +167 +217 +67 +167 +217 +67 +167 +217 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +68 +168 +218 +65 +166 +216 +62 +163 +214 +65 +166 +216 +65 +166 +216 +65 +166 +216 +48 +164 +219 +65 +166 +216 +48 +164 +219 +48 +164 +219 +62 +163 +214 +48 +164 +219 +62 +163 +214 +48 +164 +219 +54 +155 +212 +48 +164 +219 +69 +169 +219 +62 +163 +214 +78 +167 +212 +102 +181 +221 +90 +177 +222 +34 +104 +137 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +19 +48 +67 +71 +170 +220 +71 +170 +220 +69 +169 +219 +78 +167 +212 +71 +170 +220 +78 +167 +212 +71 +170 +220 +69 +169 +219 +69 +169 +219 +71 +170 +220 +68 +168 +218 +68 +168 +218 +68 +168 +218 +68 +168 +218 +68 +168 +218 +67 +167 +217 +67 +167 +217 +67 +167 +217 +67 +167 +217 +67 +167 +217 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +68 +168 +218 +65 +166 +216 +62 +163 +214 +65 +166 +216 +48 +164 +219 +48 +164 +219 +48 +164 +219 +48 +164 +219 +62 +163 +214 +48 +164 +219 +62 +163 +214 +62 +163 +214 +62 +163 +214 +65 +166 +216 +48 +164 +219 +62 +163 +214 +90 +177 +222 +88 +176 +221 +87 +175 +220 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +69 +169 +219 +82 +170 +215 +82 +170 +215 +69 +169 +219 +71 +170 +220 +82 +170 +215 +71 +170 +220 +78 +167 +212 +78 +167 +212 +71 +170 +220 +69 +169 +219 +71 +170 +220 +78 +167 +212 +69 +169 +219 +68 +168 +218 +68 +168 +218 +68 +168 +218 +68 +168 +218 +68 +168 +218 +67 +167 +217 +67 +167 +217 +67 +167 +217 +67 +167 +217 +67 +167 +217 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +68 +168 +218 +62 +163 +214 +62 +163 +214 +65 +166 +216 +62 +163 +214 +65 +166 +216 +48 +164 +219 +64 +165 +215 +62 +163 +214 +48 +164 +219 +48 +164 +219 +62 +163 +214 +62 +163 +214 +65 +166 +216 +91 +178 +224 +91 +178 +224 +21 +105 +143 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +22 +61 +78 +74 +172 +223 +82 +170 +215 +82 +170 +215 +72 +171 +221 +72 +171 +221 +71 +170 +220 +71 +170 +220 +82 +170 +215 +69 +169 +219 +71 +170 +220 +69 +169 +219 +69 +169 +219 +69 +169 +219 +69 +169 +219 +69 +169 +219 +69 +169 +219 +69 +169 +219 +68 +168 +218 +68 +168 +218 +68 +168 +218 +68 +168 +218 +68 +168 +218 +67 +167 +217 +67 +167 +217 +67 +167 +217 +67 +167 +217 +67 +167 +217 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +62 +163 +214 +65 +166 +216 +62 +163 +214 +65 +166 +216 +48 +164 +219 +48 +164 +219 +65 +166 +216 +65 +166 +216 +60 +162 +212 +60 +162 +212 +48 +164 +219 +91 +178 +224 +91 +178 +224 +88 +176 +221 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +1 +4 +82 +170 +215 +74 +172 +223 +83 +172 +217 +83 +172 +217 +83 +172 +217 +82 +170 +215 +72 +171 +221 +72 +171 +221 +82 +170 +215 +71 +170 +220 +69 +169 +219 +71 +170 +220 +71 +170 +220 +82 +170 +215 +69 +169 +219 +71 +170 +220 +69 +169 +219 +71 +170 +220 +69 +169 +219 +78 +167 +212 +69 +169 +219 +68 +168 +218 +68 +168 +218 +68 +168 +218 +68 +168 +218 +68 +168 +218 +67 +167 +217 +67 +167 +217 +67 +167 +217 +67 +167 +217 +67 +167 +217 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +67 +167 +217 +65 +166 +216 +62 +163 +214 +62 +163 +214 +65 +166 +216 +48 +164 +219 +67 +167 +217 +65 +166 +216 +62 +163 +214 +90 +177 +222 +91 +178 +224 +48 +115 +149 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +45 +104 +131 +74 +172 +223 +83 +172 +217 +74 +172 +223 +83 +172 +217 +74 +172 +223 +83 +172 +217 +83 +172 +217 +83 +172 +217 +82 +170 +215 +82 +170 +215 +82 +170 +215 +82 +170 +215 +82 +170 +215 +71 +170 +220 +69 +169 +219 +71 +170 +220 +71 +170 +220 +71 +170 +220 +69 +169 +219 +69 +169 +219 +71 +170 +220 +69 +169 +219 +78 +167 +212 +69 +169 +219 +68 +168 +218 +68 +168 +218 +68 +168 +218 +68 +168 +218 +68 +168 +218 +67 +167 +217 +67 +167 +217 +67 +167 +217 +67 +167 +217 +67 +167 +217 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +68 +168 +218 +62 +163 +214 +48 +164 +219 +48 +164 +219 +48 +164 +219 +67 +167 +217 +71 +170 +220 +91 +178 +224 +91 +178 +224 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +85 +173 +218 +74 +172 +223 +85 +173 +218 +85 +173 +218 +74 +172 +223 +74 +172 +223 +74 +172 +223 +83 +172 +217 +74 +172 +223 +83 +172 +217 +83 +172 +217 +83 +172 +217 +72 +171 +221 +72 +171 +221 +72 +171 +221 +72 +171 +221 +71 +170 +220 +82 +170 +215 +82 +170 +215 +71 +170 +220 +82 +170 +215 +69 +169 +219 +78 +167 +212 +69 +169 +219 +69 +169 +219 +78 +167 +212 +69 +169 +219 +69 +169 +219 +69 +169 +219 +68 +168 +218 +68 +168 +218 +68 +168 +218 +68 +168 +218 +67 +167 +217 +67 +167 +217 +67 +167 +217 +67 +167 +217 +67 +167 +217 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +68 +168 +218 +48 +164 +219 +62 +163 +214 +62 +163 +214 +90 +177 +222 +91 +178 +224 +50 +145 +189 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +48 +115 +149 +86 +174 +219 +88 +176 +221 +88 +176 +221 +86 +174 +219 +86 +174 +219 +85 +173 +218 +86 +174 +219 +85 +173 +218 +83 +172 +217 +83 +172 +217 +83 +172 +217 +74 +172 +223 +83 +172 +217 +83 +172 +217 +74 +172 +223 +72 +171 +221 +82 +170 +215 +82 +170 +215 +72 +171 +221 +71 +170 +220 +71 +170 +220 +82 +170 +215 +71 +170 +220 +82 +170 +215 +69 +169 +219 +69 +169 +219 +69 +169 +219 +68 +168 +218 +69 +169 +219 +68 +168 +218 +68 +168 +218 +68 +168 +218 +67 +167 +217 +67 +167 +217 +67 +167 +217 +68 +168 +218 +67 +167 +217 +67 +167 +217 +67 +167 +217 +67 +167 +217 +67 +167 +217 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +62 +163 +214 +102 +181 +221 +91 +178 +224 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +88 +176 +221 +87 +175 +220 +88 +176 +221 +74 +172 +223 +86 +174 +219 +86 +174 +219 +88 +176 +221 +85 +173 +218 +86 +174 +219 +74 +172 +223 +85 +173 +218 +74 +172 +223 +74 +172 +223 +83 +172 +217 +83 +172 +217 +83 +172 +217 +74 +172 +223 +74 +172 +223 +74 +172 +223 +82 +170 +215 +82 +170 +215 +82 +170 +215 +78 +167 +212 +48 +164 +219 +29 +152 +214 +17 +148 +210 +7 +146 +208 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +49 +151 +208 +33 +156 +212 +48 +164 +219 +65 +166 +216 +62 +163 +214 +67 +167 +217 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +88 +176 +221 +95 +181 +227 +50 +145 +189 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +64 +129 +163 +87 +175 +220 +87 +175 +220 +87 +175 +220 +87 +175 +220 +87 +175 +220 +74 +172 +223 +86 +174 +219 +86 +174 +219 +88 +176 +221 +86 +174 +219 +86 +174 +219 +85 +173 +218 +86 +174 +219 +85 +173 +218 +74 +172 +223 +74 +172 +223 +83 +172 +217 +83 +172 +217 +82 +170 +215 +55 +159 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +51 +153 +210 +62 +163 +214 +65 +166 +216 +65 +166 +216 +65 +166 +216 +65 +166 +216 +93 +180 +226 +91 +178 +224 +2 +9 +12 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +88 +176 +221 +88 +176 +221 +87 +175 +220 +87 +175 +220 +87 +175 +220 +90 +177 +222 +88 +176 +221 +74 +172 +223 +74 +172 +223 +86 +174 +219 +74 +172 +223 +86 +174 +219 +86 +174 +219 +74 +172 +223 +85 +173 +218 +74 +172 +223 +71 +170 +220 +24 +150 +212 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +31 +155 +211 +62 +163 +214 +69 +169 +219 +102 +181 +221 +66 +157 +202 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +68 +139 +173 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +87 +175 +220 +87 +175 +220 +87 +175 +220 +87 +175 +220 +91 +178 +224 +87 +175 +220 +74 +172 +223 +86 +174 +219 +86 +174 +219 +29 +152 +214 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +65 +166 +216 +93 +180 +226 +5 +11 +14 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +87 +175 +220 +87 +175 +220 +74 +172 +223 +82 +170 +215 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +62 +163 +214 +55 +159 +209 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +76 +157 +196 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +87 +175 +220 +62 +163 +214 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +24 +150 +212 +48 +164 +219 +5 +18 +28 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +5 +11 +14 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +68 +168 +218 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +48 +164 +219 +62 +163 +214 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +73 +163 +208 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +78 +167 +212 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +67 +167 +217 +0 +7 +10 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +1 +0 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +83 +172 +217 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +17 +148 +210 +42 +151 +200 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +73 +163 +208 +88 +176 +221 +88 +176 +221 +88 +176 +221 +88 +176 +221 +83 +172 +217 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +54 +155 +212 +2 +27 +39 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +7 +13 +16 +88 +176 +221 +88 +176 +221 +88 +176 +221 +86 +174 +219 +21 +149 +211 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +55 +159 +209 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +78 +167 +212 +88 +176 +221 +87 +175 +220 +33 +156 +212 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +17 +148 +210 +14 +38 +51 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +12 +30 +39 +88 +176 +221 +71 +170 +220 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +31 +155 +211 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +102 +181 +221 +17 +148 +210 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +8 +135 +190 +3 +28 +41 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +5 +18 +28 +7 +123 +172 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +19 +48 +67 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +10 +42 +60 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +143 +204 +1 +4 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +1 +4 +16 +137 +192 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +139 +199 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +23 +115 +165 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +60 +88 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +2 +65 +92 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +8 +135 +190 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +10 +110 +160 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +33 +120 +170 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +85 +122 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +6 +88 +126 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +7 +10 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +17 +148 +210 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +90 +129 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +5 +18 +28 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +17 +102 +146 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +10 +110 +160 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +129 +183 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +17 +148 +210 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +1 +11 +20 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +8 +33 +46 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +139 +199 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +16 +137 +192 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +24 +126 +182 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +17 +148 +210 +4 +14 +21 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +22 +30 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +90 +129 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +5 +11 +14 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +28 +141 +196 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +24 +37 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +4 +45 +68 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +26 +97 +136 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +19 +113 +163 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +4 +14 +21 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +10 +42 +60 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +71 +103 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +6 +31 +44 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +17 +148 +210 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +34 +143 +199 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +60 +88 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +9 +99 +143 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +27 +117 +167 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +10 +69 +97 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +6 +39 +56 +23 +115 +165 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +6 +39 +56 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +85 +122 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +28 +141 +196 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +2 +27 +39 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +24 +126 +182 +0 +4 +7 +0 +4 +7 +18 +92 +131 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +31 +129 +185 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +2 +9 +12 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +17 +102 +146 +0 +2 +0 +0 +2 +0 +2 +9 +12 +19 +113 +163 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +11 +61 +83 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +33 +133 +182 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +27 +117 +167 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +0 +85 +122 +0 +2 +0 +0 +2 +0 +0 +2 +0 +5 +11 +14 +33 +133 +182 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +5 +11 +14 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +2 +111 +154 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +1 +4 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +24 +137 +199 +5 +11 +14 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +3 +6 +20 +127 +176 +13 +147 +209 +2 +111 +154 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +139 +199 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +118 +167 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +9 +99 +143 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +2 +9 +12 +37 +132 +189 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +2 +27 +39 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +27 +117 +167 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +1 +4 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +1 +0 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +139 +199 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +57 +84 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +60 +87 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +24 +137 +199 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +2 +9 +12 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +17 +102 +146 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +3 +36 +54 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +37 +132 +189 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +96 +140 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +3 +76 +109 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +143 +204 +5 +11 +14 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +129 +183 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +51 +74 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +7 +123 +172 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +4 +45 +68 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +2 +111 +154 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +7 +10 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +17 +102 +146 +0 +24 +37 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +5 +18 +28 +22 +104 +148 +0 +143 +204 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +139 +199 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +28 +141 +196 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +24 +126 +182 +6 +39 +56 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +1 +0 +0 +2 +0 +6 +39 +56 +24 +126 +182 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +6 +39 +56 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +28 +141 +196 +5 +67 +94 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +1 +4 +0 +4 +7 +0 +63 +90 +34 +143 +199 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +17 +102 +146 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +3 +76 +109 +0 +4 +7 +0 +1 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +3 +76 +109 +24 +137 +199 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +21 +149 +211 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +3 +76 +109 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +123 +172 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +7 +10 +33 +120 +170 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +16 +123 +179 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +13 +90 +129 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +13 +90 +129 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +29 +108 +153 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +139 +199 +8 +27 +35 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +2 +27 +39 +34 +143 +199 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +37 +132 +189 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +31 +129 +185 +5 +11 +14 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +2 +9 +12 +37 +132 +189 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +20 +28 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +31 +129 +185 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +23 +115 +165 +0 +1 +4 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +1 +4 +2 +111 +154 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +28 +141 +196 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +13 +90 +129 +0 +1 +4 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +1 +0 +0 +85 +122 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +2 +9 +12 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +127 +181 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +0 +118 +167 +0 +1 +4 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +29 +108 +153 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +24 +137 +199 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +2 +9 +12 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +19 +113 +163 +0 +1 +4 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +10 +110 +160 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +24 +37 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +139 +199 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +0 +118 +167 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +29 +108 +153 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +3 +23 +31 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +129 +183 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +33 +120 +170 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +10 +42 +60 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +0 +118 +167 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +0 +118 +167 +7 +146 +208 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +7 +146 +208 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +85 +122 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +24 +126 +182 +0 +7 +10 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +33 +120 +170 +13 +147 +209 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +96 +140 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +7 +146 +208 +13 +147 +209 +13 +147 +209 +0 +143 +204 +0 +7 +10 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +5 +11 +14 +0 +143 +204 +13 +147 +209 +13 +147 +209 +13 +147 +209 +0 +4 +7 +0 +2 +0 +0 +2 +0 +29 +108 +153 +13 +147 +209 +7 +146 +208 +17 +54 +77 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +17 +54 +77 +7 +146 +208 +13 +147 +209 +0 +118 +167 +0 +2 +0 +0 +4 +7 +7 +146 +208 +17 +102 +146 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +4 +7 +17 +102 +146 +7 +146 +208 +0 +4 +7 +27 +117 +167 +0 +4 +7 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +0 +2 +0 +27 +117 +167 diff --git a/drivers/video/logo/logo_bsd_clut224.ppm b/drivers/video/logo/logo_bsd_clut224.ppm new file mode 100644 index 00000000000..408f0282aa9 --- /dev/null +++ b/drivers/video/logo/logo_bsd_clut224.ppm @@ -0,0 +1,2403 @@ +P3 +120 120 +255 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +4 0 1 7 1 3 1 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 3 1 1 28 8 14 +51 24 39 16 5 9 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 9 3 6 39 15 26 61 26 49 58 26 51 +18 7 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 57 17 29 89 29 45 73 26 48 61 26 49 22 7 12 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 20 6 10 +102 29 42 132 43 63 76 28 47 52 25 42 22 7 12 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 4 0 1 16 5 9 3 1 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 69 20 33 154 39 54 +159 46 62 89 29 45 49 25 40 18 7 11 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 16 5 9 102 29 42 41 13 21 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 97 28 42 185 38 47 145 39 54 +89 29 45 58 26 51 16 5 9 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 4 0 1 132 30 39 148 30 39 +28 8 14 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 41 13 21 132 30 39 185 38 47 152 40 56 105 35 55 +76 28 47 22 7 12 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 41 13 21 185 38 47 +124 30 42 36 11 20 1 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 2 4 +117 31 42 185 38 47 185 38 47 152 40 56 105 35 55 76 28 47 +59 25 44 4 0 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 4 0 1 121 30 42 +185 38 47 102 29 42 48 19 31 9 3 6 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 123 33 45 +185 38 47 185 38 47 159 38 55 105 35 55 76 28 47 73 26 48 +49 25 40 4 0 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 41 13 21 +185 38 47 132 30 39 71 23 37 41 14 25 4 0 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 4 0 1 117 31 42 185 38 47 +185 38 47 171 39 51 118 34 52 88 29 45 76 28 47 62 26 49 +52 24 38 18 7 11 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 10 4 6 16 5 9 16 5 9 +18 7 11 18 7 11 16 5 9 10 4 6 16 5 9 7 2 4 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 1 3 +148 30 39 152 32 42 67 22 35 54 21 35 35 12 21 4 0 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 69 20 33 185 38 47 185 38 47 +185 38 47 159 35 49 105 35 55 89 29 45 76 28 47 62 26 49 +60 25 40 42 17 30 3 1 1 0 0 0 0 0 0 0 0 0 +1 0 0 41 13 21 79 27 44 118 34 52 124 30 42 121 30 42 +142 34 47 121 30 42 86 29 44 68 23 35 60 22 36 52 24 38 +42 17 30 30 10 18 16 5 9 9 3 6 9 3 6 3 1 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +148 30 39 185 38 47 71 23 37 50 18 33 49 25 40 35 12 21 +7 1 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 10 4 6 185 38 47 185 38 47 185 38 47 +185 38 47 140 36 52 105 35 55 89 29 45 76 28 47 67 27 47 +56 25 45 52 24 38 48 19 31 39 15 26 30 10 18 31 10 18 +89 29 45 129 39 59 159 38 55 171 39 51 171 39 51 171 39 51 +159 38 55 138 37 53 119 34 51 105 35 55 88 29 45 76 28 47 +76 28 47 62 26 49 57 25 43 49 25 40 48 19 31 31 10 18 +10 4 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 +132 30 39 185 38 47 121 30 42 64 24 39 49 25 40 48 19 31 +10 4 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 102 29 42 185 38 47 185 38 47 185 38 47 +185 38 47 131 38 56 105 35 55 89 29 45 67 27 47 64 25 43 +64 25 43 105 35 55 121 37 56 79 28 45 65 27 44 105 35 55 +159 46 62 159 46 62 159 38 55 171 39 51 171 39 51 144 40 57 +135 40 58 121 37 56 105 35 55 105 35 55 105 35 55 89 29 45 +88 29 45 67 27 47 61 26 49 58 26 51 52 25 42 49 25 40 +48 19 31 35 12 21 7 2 4 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +97 28 42 185 38 47 148 30 39 71 23 37 52 24 38 42 17 30 +35 12 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 36 11 20 171 39 51 185 38 47 185 38 47 185 38 47 +185 38 47 140 40 59 105 35 55 76 28 47 58 20 33 102 29 42 +140 36 52 171 39 51 159 38 55 119 40 62 105 35 55 143 45 64 +166 48 64 159 46 62 159 46 62 144 40 57 100 28 46 89 29 45 +86 29 44 73 26 42 76 28 47 88 29 45 89 29 45 105 35 55 +105 35 55 88 29 45 67 27 47 61 26 49 56 25 45 52 25 42 +52 25 42 52 25 42 49 25 40 30 10 18 7 2 4 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 0 1 +97 28 42 185 38 47 142 31 41 69 20 33 57 25 43 50 18 33 +42 17 30 10 4 6 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 31 10 18 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 139 38 56 79 27 44 71 23 37 124 30 42 185 38 47 +185 38 47 185 38 47 185 38 47 166 48 64 152 49 69 166 48 64 +185 38 47 166 48 64 143 45 64 112 32 46 117 31 42 141 31 41 +144 31 43 123 33 48 79 27 44 60 26 44 76 28 47 76 28 47 +105 35 55 105 35 55 89 29 45 88 29 45 73 26 42 60 26 44 +56 25 45 52 25 42 49 25 40 49 25 40 40 15 29 16 5 9 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 35 12 21 +132 30 39 185 38 47 132 30 39 71 23 37 50 18 33 49 25 40 +42 17 30 30 10 18 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 36 11 20 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 110 32 46 71 23 37 142 31 41 185 38 47 185 38 47 +185 38 47 171 39 51 166 48 64 166 48 64 185 38 47 185 38 47 +185 38 47 185 38 47 171 39 51 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 140 36 52 86 29 44 59 25 44 67 27 47 +89 29 45 113 41 62 113 41 62 97 28 42 100 28 46 88 29 45 +65 27 44 58 26 51 56 25 45 49 25 40 52 25 42 42 17 30 +28 8 14 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 41 14 25 97 28 42 +148 30 39 162 38 49 117 31 42 67 23 37 49 25 40 42 17 30 +42 17 30 35 12 21 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 41 13 21 185 38 47 185 38 47 185 38 47 185 38 47 +159 35 49 71 23 37 141 31 41 185 38 47 185 38 47 141 31 41 +117 31 42 113 41 62 118 50 79 113 41 62 166 48 64 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 129 39 59 67 27 47 56 25 45 +76 28 47 105 35 55 133 35 50 112 32 46 110 32 46 100 28 46 +89 29 45 86 29 44 73 26 48 62 26 49 58 26 51 52 25 42 +49 25 40 39 15 26 9 3 6 0 0 0 0 0 0 3 1 1 +10 4 6 20 6 10 47 16 28 69 20 33 135 30 41 185 38 47 +185 38 47 152 32 42 97 28 42 63 22 36 50 18 33 48 19 31 +50 18 33 39 15 26 4 0 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 41 13 21 185 38 47 185 38 47 185 38 47 171 39 51 +97 28 42 132 31 43 185 38 47 171 39 51 102 29 42 118 50 79 +167 135 158 210 187 199 171 141 162 108 54 86 152 40 56 185 38 47 +185 38 47 185 38 47 171 39 51 121 30 42 132 30 39 152 32 42 +185 38 47 185 38 47 185 38 47 185 38 47 118 34 52 61 26 49 +67 27 47 89 29 45 128 33 49 128 33 49 123 33 48 120 32 46 +120 32 46 120 32 46 100 28 46 76 28 47 73 26 48 65 27 44 +68 23 35 66 24 37 65 27 44 47 16 28 28 8 14 69 20 33 +102 29 42 132 30 39 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 124 30 42 79 27 44 60 22 36 51 24 39 50 18 33 +48 19 31 40 15 29 9 3 6 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 36 11 20 185 38 47 185 38 47 185 38 47 102 29 42 +117 31 42 185 38 47 171 39 51 112 32 46 148 114 145 233 215 221 +253 249 249 238 222 225 148 114 145 113 41 62 185 38 47 185 38 47 +171 39 51 125 35 52 134 49 77 148 114 145 148 114 145 131 80 105 +113 41 62 154 38 52 185 38 47 185 38 47 171 39 51 88 29 45 +76 28 47 105 35 55 119 34 51 133 35 50 135 32 45 128 33 49 +128 33 49 133 35 50 118 34 52 100 28 46 89 29 45 86 29 44 +100 28 46 121 30 42 135 30 41 135 30 41 148 30 39 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +132 30 39 73 26 42 65 27 44 65 27 44 57 25 43 49 25 40 +42 17 30 50 18 33 18 7 11 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 7 1 3 141 31 41 185 38 47 145 31 41 97 28 42 +185 38 47 162 38 49 110 32 46 191 162 183 248 240 240 253 249 249 +243 232 234 210 187 199 131 80 105 119 40 62 185 38 47 185 38 47 +128 41 59 159 124 153 226 205 215 231 213 218 226 205 215 228 209 216 +171 141 162 118 50 79 138 32 45 185 38 47 185 38 47 119 34 51 +88 29 45 119 40 62 119 40 62 125 41 61 124 34 50 128 33 49 +128 33 49 128 33 49 124 34 50 118 34 52 110 32 46 119 34 51 +136 33 46 142 31 41 152 32 42 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 171 39 51 132 30 39 +97 28 42 71 23 37 66 25 40 57 25 43 49 25 40 42 17 30 +42 17 30 50 18 33 18 7 11 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 57 17 29 171 39 51 97 28 42 148 30 39 +185 38 47 97 28 42 167 135 158 253 249 249 253 249 249 243 232 234 +241 229 231 202 176 194 113 41 62 171 39 51 185 38 47 133 35 50 +167 135 158 253 249 249 245 236 237 234 219 224 231 213 218 228 209 216 +219 198 209 148 114 145 86 29 44 171 39 51 185 38 47 159 38 55 +119 34 51 122 42 63 132 43 63 122 42 63 121 37 56 128 33 49 +123 33 48 119 34 51 123 32 47 110 32 46 118 34 52 140 36 52 +145 31 41 152 32 42 162 38 49 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 152 32 42 132 30 39 97 28 42 +71 23 37 71 23 37 65 27 44 56 25 45 49 25 40 42 17 30 +42 17 30 42 17 30 18 6 10 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 22 7 12 113 41 62 102 29 42 185 38 47 +116 30 44 148 114 145 245 236 237 253 249 249 248 240 240 238 224 228 +243 232 234 167 135 158 141 31 41 185 38 47 162 38 49 141 92 121 +245 236 237 253 249 249 248 240 240 243 232 234 238 224 228 233 215 221 +226 205 215 171 141 162 108 54 86 135 30 41 185 38 47 185 38 47 +152 40 56 135 40 58 141 42 59 135 40 58 128 33 49 133 35 50 +133 35 50 128 33 49 123 32 47 105 35 55 105 35 55 131 38 56 +138 32 45 136 31 43 148 30 39 152 32 42 185 38 47 185 38 47 +185 38 47 171 39 51 142 31 41 117 31 42 97 28 42 86 29 44 +68 23 35 66 24 37 58 24 38 49 25 40 48 19 31 42 17 30 +49 25 40 42 17 30 10 4 6 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 7 1 3 73 26 42 145 39 54 144 31 43 +120 71 102 238 222 225 253 249 249 253 249 249 241 229 231 241 229 231 +228 209 216 131 80 105 171 39 51 185 38 47 131 80 105 238 224 228 +253 249 249 248 240 240 238 222 225 238 222 225 238 224 228 238 222 225 +228 209 216 180 150 172 108 66 98 102 29 42 185 38 47 185 38 47 +185 38 47 159 38 55 171 39 51 150 36 50 133 35 50 133 31 44 +129 33 45 120 32 46 128 33 49 128 33 49 121 37 56 128 33 49 +128 33 49 125 31 44 141 31 41 148 30 39 152 32 42 148 30 39 +135 30 41 132 30 39 124 30 42 102 29 42 86 29 44 71 23 37 +65 27 44 56 25 45 51 24 39 49 25 40 50 18 33 48 19 31 +42 17 30 39 15 26 7 2 4 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 97 28 42 162 38 49 126 41 60 +210 187 199 253 249 249 253 249 249 248 240 240 238 224 228 245 236 237 +196 169 185 136 33 46 185 38 47 143 45 64 196 169 185 253 249 249 +253 249 249 243 232 234 238 224 228 238 224 228 238 224 228 238 222 225 +231 213 218 180 150 172 138 88 121 89 29 45 171 39 51 185 38 47 +185 38 47 185 38 47 171 39 51 150 36 50 142 33 47 135 31 44 +125 31 44 117 31 44 112 32 46 138 34 49 117 31 44 120 32 46 +120 32 46 117 31 44 136 31 43 144 31 43 148 30 39 121 30 42 +117 31 42 102 29 42 97 28 42 73 26 42 65 27 44 60 26 44 +52 25 42 49 25 40 50 18 33 50 18 33 49 25 40 42 17 30 +38 12 21 28 8 14 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 18 7 11 117 31 42 132 30 39 167 135 158 +248 240 240 253 249 249 253 249 249 245 236 237 245 236 237 245 236 237 +148 114 145 159 38 55 159 38 55 171 141 162 253 249 249 253 249 249 +248 240 240 243 232 234 233 215 221 234 219 224 241 229 231 231 213 218 +238 222 225 191 162 183 137 96 131 105 35 55 162 38 49 185 38 47 +185 38 47 171 39 51 171 39 51 159 35 49 142 33 47 133 32 44 +123 33 45 117 31 42 132 30 39 123 32 47 118 34 52 118 34 52 +112 32 46 117 31 44 117 31 44 117 31 42 117 31 42 97 28 42 +97 28 42 86 29 44 71 23 37 60 25 40 52 25 42 56 25 45 +49 25 40 49 25 40 49 25 40 49 25 40 48 19 31 42 17 30 +47 16 28 7 2 4 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 41 13 21 140 36 52 110 32 46 226 205 215 +233 215 221 233 215 221 241 229 231 241 229 231 243 232 234 233 215 221 +152 49 69 159 35 49 131 80 105 241 229 231 253 249 249 248 240 240 +241 229 231 241 229 231 238 222 225 238 224 228 241 229 231 238 222 225 +233 215 221 202 176 194 148 114 145 108 54 86 152 32 42 185 38 47 +185 38 47 185 38 47 171 39 51 153 36 50 139 38 56 128 33 49 +117 31 44 125 31 44 131 32 43 117 31 44 113 41 62 110 32 46 +117 31 44 133 32 44 117 31 42 89 29 45 89 29 45 86 29 44 +71 23 37 64 25 43 60 26 44 49 25 40 49 25 40 49 25 40 +49 25 40 49 25 40 49 25 40 50 18 33 42 17 30 35 12 21 +16 5 9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 57 17 29 135 30 41 159 124 153 196 169 185 +191 162 183 140 102 127 108 66 98 210 187 199 248 240 240 196 169 185 +143 45 64 159 46 63 180 150 172 245 236 237 253 249 249 248 240 240 +241 229 231 231 213 218 241 229 231 241 229 231 238 222 225 238 222 225 +228 209 216 191 162 183 159 124 153 108 54 86 141 31 41 185 38 47 +185 38 47 185 38 47 185 38 47 150 36 50 140 36 52 125 31 44 +123 33 45 121 30 42 116 30 44 102 29 42 110 32 46 112 32 46 +110 32 46 102 29 42 86 29 44 73 26 42 67 27 47 56 25 45 +52 25 42 52 25 42 52 25 42 49 25 40 49 25 40 49 25 40 +49 25 40 49 25 40 42 17 30 40 15 29 35 12 21 10 4 6 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 97 28 42 152 49 69 191 162 183 141 92 121 +228 209 216 108 66 98 50 18 33 140 102 127 243 232 234 131 80 105 +148 37 53 134 49 77 180 150 172 191 162 183 196 169 185 210 187 199 +241 229 231 233 215 221 231 213 218 238 224 228 238 222 225 238 222 225 +233 215 221 202 176 194 159 124 153 93 57 98 124 30 42 185 38 47 +185 38 47 185 38 47 185 38 47 146 36 50 133 35 50 124 30 42 +125 31 44 124 30 42 110 32 46 102 29 42 97 28 42 97 28 42 +97 28 42 71 23 37 57 25 43 56 25 45 56 25 45 52 25 42 +49 25 40 49 25 40 49 25 40 49 25 40 49 25 40 49 25 40 +49 25 40 49 25 40 49 25 40 31 10 18 7 2 4 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 4 0 1 102 29 42 141 92 121 131 80 105 180 150 172 +196 169 185 58 26 51 52 25 42 120 71 102 202 176 194 121 37 56 +135 40 58 71 23 37 108 54 86 210 187 199 108 54 86 89 29 45 +202 176 194 243 232 234 238 224 228 234 219 224 241 229 231 238 222 225 +233 215 221 202 176 194 159 124 153 108 54 86 124 30 42 185 38 47 +185 38 47 185 38 47 185 38 47 162 38 49 159 35 49 135 31 44 +125 31 44 121 30 42 117 31 42 97 28 42 86 29 44 67 23 37 +52 24 38 49 25 40 49 25 40 49 25 40 49 25 40 49 25 40 +49 25 40 49 25 40 49 25 40 49 25 40 49 25 40 49 25 40 +49 25 40 49 25 40 35 12 21 7 2 4 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 10 4 6 97 28 42 131 80 105 76 28 47 137 96 131 +93 57 98 54 21 35 50 18 33 108 54 86 159 124 153 125 35 52 +89 29 45 48 19 31 159 124 153 191 162 183 51 24 39 54 19 32 +131 80 105 243 232 234 245 236 237 243 232 234 241 229 231 238 224 228 +228 209 216 202 176 194 167 135 158 93 57 98 121 30 42 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 152 32 42 129 33 45 +121 30 42 117 31 42 97 28 42 71 23 37 67 22 35 54 21 35 +52 24 38 56 25 45 52 25 42 49 25 40 52 25 42 49 25 40 +49 25 40 49 25 40 49 25 40 48 19 31 50 18 33 42 17 30 +50 18 33 22 7 12 1 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 10 4 6 86 29 44 79 27 44 60 25 40 49 25 40 +57 25 43 56 25 45 52 20 33 108 54 86 134 49 77 129 39 59 +71 23 37 60 25 40 196 169 185 167 135 158 50 18 33 52 25 42 +76 28 47 219 198 209 248 240 240 241 229 231 245 236 237 238 224 228 +231 213 218 202 176 194 159 124 153 93 57 98 132 30 39 185 38 47 +185 38 47 185 38 47 185 38 47 171 39 51 152 32 42 132 30 39 +124 30 42 102 29 42 86 29 44 71 23 37 67 22 35 52 24 38 +52 25 42 49 25 40 52 25 42 49 25 40 49 25 40 49 25 40 +49 25 40 49 25 40 49 25 40 42 17 30 42 17 30 28 8 14 +22 7 12 3 1 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 57 17 29 138 37 53 65 27 44 61 26 49 56 25 45 +51 24 39 49 25 40 58 24 38 88 29 45 144 40 57 135 40 58 +63 22 36 52 25 42 167 135 158 120 71 102 49 25 40 56 25 45 +67 27 47 196 169 185 248 240 240 243 232 234 245 236 237 238 224 228 +219 198 209 196 169 185 137 96 131 76 28 47 159 35 49 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 152 32 42 142 31 41 +135 30 41 121 30 42 97 28 42 71 23 37 61 21 34 50 18 33 +52 25 42 49 25 40 49 25 40 49 25 40 49 25 40 49 25 40 +49 25 40 49 25 40 48 19 31 35 12 21 16 5 9 1 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +22 7 12 152 32 42 148 37 50 66 25 40 67 27 47 61 26 49 +52 25 42 52 25 42 54 21 35 79 27 44 154 39 54 113 41 62 +60 25 40 61 26 49 58 26 51 62 26 49 56 25 45 56 25 45 +61 21 34 167 135 158 248 240 240 238 222 225 243 232 234 238 222 225 +228 209 216 180 150 172 137 96 131 79 28 45 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 171 39 51 159 35 49 135 30 41 +132 30 39 124 30 42 102 29 42 71 23 37 67 22 35 48 16 29 +49 25 40 52 25 42 49 25 40 49 25 40 49 25 40 50 18 33 +42 17 30 41 14 25 22 7 12 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 3 1 1 57 17 29 +162 38 49 185 38 47 171 39 51 97 28 42 60 23 38 65 27 44 +60 26 44 60 26 44 57 17 29 131 32 43 159 38 55 89 29 45 +57 25 43 61 26 49 56 25 45 61 26 49 61 26 49 61 26 49 +65 27 44 171 141 162 243 232 234 243 232 234 245 236 237 233 215 221 +219 198 209 171 141 162 120 71 102 100 28 46 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 171 39 51 150 36 50 135 31 44 +121 30 42 121 30 42 102 29 42 86 29 44 61 21 34 56 22 36 +49 25 40 52 25 42 52 25 42 49 25 40 49 25 40 42 17 30 +48 19 31 22 7 12 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 10 4 6 97 28 42 185 38 47 +185 38 47 185 38 47 185 38 47 159 35 49 117 31 42 71 23 37 +71 23 37 71 23 37 124 30 42 185 38 47 171 39 51 97 28 42 +60 26 44 62 26 49 52 25 42 61 26 49 61 26 49 67 27 47 +73 26 48 171 141 162 243 232 234 245 236 237 243 232 234 231 213 218 +202 176 194 159 124 153 93 57 98 131 38 56 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 171 39 51 159 35 49 135 32 45 +124 30 42 117 31 42 102 29 42 71 23 37 61 21 34 52 24 38 +49 25 40 49 25 40 52 25 42 52 25 42 49 25 40 40 15 29 +36 11 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 7 2 4 102 29 42 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 133 32 44 71 23 37 +73 26 42 110 32 46 153 36 50 171 39 51 171 39 51 112 32 46 +67 27 47 61 26 49 61 26 49 61 26 49 56 25 45 57 25 43 +105 35 55 210 187 199 245 236 237 241 229 231 231 213 218 233 215 221 +210 187 199 146 108 143 76 28 47 159 35 49 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 152 32 42 138 32 45 +117 31 42 110 32 46 97 28 42 71 23 37 60 23 38 51 24 39 +51 24 39 49 25 40 52 25 42 52 25 42 49 25 40 49 25 40 +16 5 9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 38 12 21 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 135 30 41 124 30 42 152 32 42 +171 39 51 171 39 51 153 36 50 136 31 43 171 39 51 171 39 51 +89 29 45 67 27 47 56 25 45 60 26 44 60 22 36 67 22 35 +159 124 153 243 232 234 243 232 234 233 215 221 231 213 218 226 205 215 +180 150 172 108 66 98 97 28 42 185 38 47 185 38 47 185 38 47 +185 38 47 171 39 51 171 39 51 171 39 51 153 36 50 135 32 45 +123 32 47 102 29 42 97 28 42 71 23 37 60 25 40 57 25 43 +49 25 40 49 25 40 52 25 42 52 25 42 49 25 40 49 25 40 +16 5 9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 10 4 6 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 7 2 4 110 32 46 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 148 30 39 148 30 39 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 171 39 51 162 38 49 185 38 47 +120 32 46 71 23 37 56 25 45 57 25 43 61 21 34 108 54 86 +219 198 209 241 229 231 233 215 221 238 222 225 226 205 215 191 162 183 +137 96 131 105 35 55 171 39 51 185 38 47 185 38 47 185 38 47 +185 38 47 159 38 55 159 38 55 162 38 49 144 40 57 136 33 46 +112 32 46 110 32 46 86 29 44 73 26 42 64 24 39 57 25 43 +56 25 45 58 26 51 58 26 51 58 26 51 49 25 40 49 25 40 +9 3 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 3 1 1 108 66 98 120 71 102 140 102 127 +93 57 98 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 10 4 6 153 36 50 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 135 30 41 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 159 38 55 159 38 55 +150 39 55 105 35 55 66 25 40 60 23 38 76 28 47 167 135 158 +248 240 240 253 249 249 243 232 234 233 215 221 202 176 194 148 114 145 +108 66 98 121 37 56 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 171 39 51 171 39 51 171 39 51 150 39 55 138 34 49 +112 32 46 102 29 42 97 28 42 71 23 37 67 23 37 60 26 44 +61 26 49 58 26 51 58 26 51 52 25 42 49 25 40 49 25 40 +9 3 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 1 0 0 93 57 98 202 176 194 +167 135 158 108 66 98 42 17 30 0 0 0 0 0 0 0 0 0 +0 0 0 7 2 4 152 32 42 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 132 30 39 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 152 40 56 128 41 59 +121 37 56 119 40 62 105 35 55 79 27 44 105 35 55 148 114 145 +180 150 172 191 162 183 148 114 145 141 92 121 108 54 86 108 54 86 +86 29 44 124 37 57 159 35 49 171 39 51 185 38 47 185 38 47 +153 36 50 159 46 62 171 39 51 171 39 51 152 32 42 135 32 45 +110 32 46 102 29 42 86 29 44 71 23 37 52 24 38 60 26 44 +58 26 51 58 26 51 58 26 51 52 25 42 49 25 40 49 25 40 +9 3 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 138 88 121 +146 108 143 58 26 51 58 26 51 10 4 6 0 0 0 0 0 0 +0 0 0 7 2 4 141 31 41 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 135 30 41 148 30 39 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 171 39 51 143 45 64 123 43 68 +113 41 62 105 35 55 105 35 55 136 44 65 131 38 56 105 35 55 +105 35 55 116 30 44 116 30 44 102 29 42 117 31 42 124 30 42 +132 30 39 153 36 50 159 35 49 171 39 51 171 39 51 159 35 49 +153 36 50 144 40 57 150 39 55 154 39 54 159 38 55 123 33 45 +102 29 42 97 28 42 86 29 44 73 26 42 51 24 39 58 26 51 +58 26 51 58 26 51 52 25 42 52 25 42 49 25 40 39 15 26 +4 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 58 26 51 +196 169 185 93 57 98 58 26 51 42 17 30 3 1 1 0 0 0 +0 0 0 7 2 4 97 28 42 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 171 39 51 116 30 44 132 30 39 185 38 47 +185 38 47 171 39 51 159 46 63 143 45 66 134 49 77 108 54 86 +108 54 86 108 54 86 76 28 47 119 34 51 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +171 39 51 154 39 54 144 40 57 140 36 52 142 33 47 120 32 46 +102 29 42 89 29 45 86 29 44 65 27 44 56 25 45 58 26 51 +58 26 51 58 26 51 52 25 42 52 25 42 52 25 42 35 12 21 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 49 25 40 +171 141 162 120 71 102 93 57 98 93 57 98 18 7 11 0 0 0 +0 0 0 0 0 0 36 11 20 171 39 51 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 159 38 55 112 32 46 110 32 46 +117 31 44 119 40 62 113 41 62 89 29 45 88 29 45 76 28 47 +76 28 47 105 35 55 76 28 47 110 32 46 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 171 39 51 159 35 49 159 35 49 136 33 46 110 32 46 +102 29 42 86 29 44 73 26 42 59 25 44 61 26 49 58 26 51 +58 26 51 58 26 51 58 26 51 49 25 40 49 25 40 30 10 18 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +49 25 40 22 7 12 7 2 4 93 57 98 93 57 98 0 0 0 +0 0 0 0 0 0 18 7 11 133 35 50 185 38 47 185 38 47 +185 38 47 154 39 54 141 40 57 159 46 63 166 48 64 138 34 49 +116 30 44 105 35 55 113 41 62 105 35 55 105 35 55 121 37 56 +105 35 55 113 41 62 113 41 62 135 40 58 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 171 39 51 154 38 52 128 33 49 101 29 42 +86 29 44 79 28 45 67 27 47 61 26 49 56 25 45 52 25 42 +58 26 51 58 26 51 52 25 42 49 25 40 49 25 40 16 5 9 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 49 25 40 +138 88 121 148 114 145 140 102 127 148 114 145 30 10 18 0 0 0 +0 0 0 0 0 0 0 0 0 18 7 11 137 96 131 40 15 29 +0 0 0 0 0 0 0 0 0 58 24 38 159 46 62 185 38 47 +185 38 47 141 43 61 89 29 45 86 29 44 140 36 52 185 38 47 +171 39 51 171 39 51 159 38 55 159 38 55 166 48 64 166 48 64 +166 48 64 159 46 63 152 49 69 166 48 64 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 159 35 49 124 34 50 118 34 52 100 28 46 +86 29 44 67 27 47 67 27 47 58 26 51 58 26 51 58 26 51 +58 26 51 58 26 51 58 26 51 52 25 42 40 15 29 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 39 15 26 +171 141 162 146 108 143 146 108 143 120 71 102 30 10 18 0 0 0 +0 0 0 0 0 0 0 0 0 1 0 0 108 66 98 95 59 101 +0 0 0 0 0 0 0 0 0 0 0 0 35 12 21 117 31 44 +171 39 51 171 39 51 135 40 58 79 28 45 77 27 45 141 40 57 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 171 39 51 +171 39 51 159 38 55 133 35 50 121 37 56 105 35 55 105 35 55 +88 29 45 58 26 51 58 26 51 58 26 51 58 26 51 58 26 51 +58 26 51 58 26 51 49 25 40 39 15 26 7 2 4 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 2 4 +140 102 127 76 28 47 58 26 51 93 57 98 39 15 26 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 30 10 18 137 96 131 +39 15 26 0 0 0 0 0 0 0 0 0 0 0 0 4 0 1 +79 27 44 144 45 67 159 46 63 134 49 77 88 29 45 89 29 45 +152 40 56 171 39 51 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 166 48 64 159 46 63 159 38 55 159 38 55 150 39 55 +140 40 59 119 40 62 113 41 62 105 35 55 105 35 55 88 29 45 +67 27 47 58 26 51 58 26 51 58 26 51 58 26 51 58 26 51 +58 26 51 52 25 42 40 15 29 7 2 4 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +140 102 127 93 57 98 76 28 47 58 26 51 93 57 98 30 10 18 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 148 114 145 +58 26 51 3 1 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 28 8 14 61 21 34 105 35 55 118 50 79 88 29 45 +102 29 42 152 40 56 166 48 64 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 166 48 64 159 46 63 +141 43 61 125 41 61 105 35 55 105 35 55 105 35 55 105 35 55 +105 35 55 122 42 63 113 41 62 105 35 55 88 29 45 73 26 48 +67 27 47 58 26 51 58 26 51 58 26 51 58 26 51 58 26 51 +52 25 42 35 12 21 1 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +140 102 127 49 25 40 35 12 21 58 26 51 93 57 98 58 26 51 +49 25 40 30 10 18 16 5 9 0 0 0 52 25 42 138 88 121 +40 15 29 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 16 5 9 51 24 39 105 35 55 +76 28 47 105 35 55 143 45 64 166 48 64 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 171 39 51 166 48 64 159 46 63 134 49 77 118 50 79 +113 41 62 66 24 37 61 21 34 79 27 44 76 28 47 76 28 47 +88 29 45 105 35 55 105 35 55 76 28 47 58 26 51 58 26 51 +58 26 51 58 26 51 58 26 51 58 26 51 58 26 51 58 26 51 +40 15 29 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 42 17 30 93 57 98 +58 26 51 58 26 51 58 26 51 93 57 98 108 66 98 58 26 51 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 16 5 9 +42 17 30 77 27 45 105 35 55 128 41 59 166 48 64 166 48 64 +166 48 64 185 38 47 171 39 51 171 39 51 166 48 64 159 46 62 +159 38 55 159 46 62 139 44 66 118 50 79 108 54 86 76 28 47 +73 26 42 73 26 42 89 29 45 113 41 62 118 50 79 123 42 67 +122 42 63 113 41 62 105 35 55 73 26 48 58 26 51 58 26 51 +58 26 51 58 26 51 58 26 51 58 26 51 58 26 51 39 15 26 +3 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 10 4 6 140 102 127 159 124 153 120 71 102 +140 102 127 140 102 127 131 80 105 131 80 105 108 66 98 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 39 15 26 +58 26 51 58 26 51 58 26 51 58 26 51 58 26 51 42 17 30 +1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 18 7 11 47 16 28 79 27 44 119 40 62 145 47 69 +152 49 69 152 49 69 152 49 69 145 47 69 145 47 69 136 44 65 +125 41 61 113 41 62 105 35 55 76 28 47 76 28 47 97 28 42 +117 31 44 128 41 59 128 42 60 128 42 60 124 42 65 113 41 62 +105 35 55 105 35 55 105 35 55 88 29 45 76 28 47 58 26 51 +58 26 51 58 26 51 58 26 51 49 25 40 30 10 18 4 0 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 39 15 26 202 176 194 226 205 215 +202 176 194 191 162 183 159 124 153 131 80 105 35 12 21 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +52 25 42 58 26 51 58 26 51 58 26 51 58 26 51 58 26 51 +22 7 12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 9 3 6 1 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 18 6 10 73 26 42 105 35 55 +105 35 55 113 41 62 113 41 62 113 41 62 113 41 62 105 35 55 +105 35 55 76 28 47 79 27 44 101 29 42 129 33 45 150 39 55 +144 40 57 136 33 46 125 35 52 113 41 62 105 35 55 105 35 55 +105 35 55 105 35 55 88 29 45 76 28 47 58 26 51 58 26 51 +58 26 51 52 25 42 49 25 40 22 7 12 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 18 7 11 159 124 153 +146 108 143 146 108 143 148 114 145 108 66 98 10 4 6 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 2 4 +93 57 98 93 63 110 58 26 51 58 26 51 58 26 51 58 26 51 +56 25 45 18 7 11 7 2 4 3 1 1 39 15 26 124 30 42 +152 32 42 159 38 55 171 39 51 97 28 42 7 1 3 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 4 0 1 57 17 29 +121 37 56 105 35 55 100 28 46 97 28 42 86 29 44 86 29 44 +97 28 42 117 31 42 141 33 45 153 36 50 153 36 50 140 36 52 +128 33 49 105 35 55 105 35 55 105 35 55 89 29 45 105 35 55 +105 35 55 76 28 47 67 27 47 58 26 51 58 26 51 58 26 51 +52 25 42 49 25 40 16 5 9 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 2 4 +93 57 98 93 63 110 93 57 98 108 66 98 131 80 105 42 17 30 +49 25 40 76 28 47 67 27 47 42 17 30 76 28 47 140 102 127 +171 141 162 93 63 110 58 26 51 42 17 30 58 26 51 58 26 51 +58 26 51 58 26 51 76 28 47 65 27 44 152 32 42 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 112 32 46 39 15 26 +3 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +20 6 10 69 20 33 139 37 53 159 38 55 159 35 49 162 38 49 +159 38 55 162 38 49 150 36 50 142 32 45 124 34 50 105 35 55 +105 35 55 88 29 45 105 35 55 105 35 55 89 29 45 89 29 45 +105 35 55 88 29 45 76 28 47 58 26 51 58 26 51 52 25 42 +52 25 42 39 15 26 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 10 4 6 58 26 51 58 26 51 58 26 51 93 57 98 +108 66 98 131 80 105 137 96 131 159 124 153 167 135 158 137 96 131 +58 26 51 22 7 12 7 2 4 0 0 0 9 3 6 35 12 21 +49 25 40 58 26 51 58 26 51 112 32 46 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 153 36 50 105 35 55 58 26 51 +18 7 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 3 1 1 42 17 30 97 28 42 119 34 51 128 33 49 +131 38 56 122 40 63 105 35 55 105 35 55 88 29 45 76 28 47 +76 28 47 73 26 42 105 35 55 105 35 55 105 35 55 105 35 55 +105 35 55 105 35 55 89 29 45 76 28 47 58 26 51 52 25 42 +49 25 40 18 7 11 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 3 1 1 22 7 12 18 7 11 22 7 12 +30 10 18 30 10 18 40 15 29 42 17 30 30 10 18 9 3 6 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +28 8 14 58 26 51 58 26 51 118 34 52 185 38 47 185 38 47 +185 38 47 185 38 47 171 39 51 118 34 52 58 26 51 58 26 51 +49 25 40 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 3 1 1 57 17 29 79 27 44 71 23 37 +73 26 42 71 23 37 79 27 44 67 23 37 68 23 35 79 27 44 +86 29 44 105 35 55 124 35 54 128 33 49 135 32 45 138 32 45 +128 33 49 119 34 51 100 28 46 86 29 44 58 26 51 58 26 51 +48 19 31 16 5 9 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +1 0 0 39 15 26 58 26 51 76 28 47 152 32 42 185 38 47 +185 38 47 185 38 47 135 40 58 76 28 47 58 26 51 58 26 51 +30 10 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 57 17 29 139 44 68 139 38 56 +135 30 41 117 31 42 116 30 44 123 32 47 125 35 52 135 40 58 +135 40 58 140 36 52 152 32 42 162 38 49 162 38 49 185 38 47 +162 38 49 152 32 42 128 33 49 100 28 46 62 26 49 58 26 51 +52 25 42 22 7 12 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 30 10 18 76 28 47 119 40 62 102 29 42 142 34 47 +150 36 50 128 41 59 105 35 55 76 28 47 58 26 51 48 19 31 +1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 7 2 4 118 34 52 159 46 63 171 39 51 +185 38 47 171 39 51 171 39 51 171 39 51 171 39 51 171 39 51 +171 39 51 162 38 49 171 39 51 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 171 39 51 118 34 52 76 28 47 56 25 45 +58 26 51 30 10 18 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 31 10 18 154 39 54 185 38 47 150 36 50 123 33 45 +112 32 46 105 35 55 105 35 55 76 28 47 61 26 49 67 27 47 +1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 1 0 0 61 21 34 166 48 64 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 138 32 45 76 28 47 56 25 45 +49 25 40 42 17 30 1 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +1 0 0 117 31 42 185 38 47 185 38 47 185 38 47 185 38 47 +162 38 49 125 41 61 105 35 55 67 27 47 61 21 34 61 26 49 +39 15 26 22 7 12 18 7 11 7 2 4 3 1 1 3 1 1 +30 10 18 66 25 40 139 38 56 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 100 28 46 61 26 49 +49 25 40 49 25 40 20 6 10 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +28 8 14 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 139 44 68 108 54 86 73 26 48 57 25 43 58 26 51 +58 26 51 58 26 51 58 26 51 56 25 45 52 25 42 56 25 45 +73 26 48 113 41 62 152 49 69 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 171 39 51 162 38 49 162 38 49 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 132 30 39 76 28 47 +58 26 51 49 25 40 35 12 21 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +41 13 21 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +166 48 64 134 49 77 108 54 86 76 28 47 67 27 47 73 26 48 +58 26 51 58 26 51 58 26 51 58 26 51 61 26 49 61 26 49 +108 54 86 105 35 55 105 35 55 119 34 51 133 32 44 148 30 39 +152 32 42 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 159 35 49 159 35 49 159 35 49 159 35 49 171 39 51 +185 38 47 185 38 47 185 38 47 171 39 51 125 31 44 79 27 44 +58 26 51 49 25 40 40 15 29 10 4 6 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +36 11 20 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +152 40 56 118 50 79 108 54 86 76 28 47 66 25 40 76 28 47 +58 26 51 58 26 51 58 26 51 58 26 51 61 26 49 76 28 47 +113 41 62 133 35 50 150 39 55 162 38 49 162 38 49 148 30 39 +132 30 39 132 30 39 132 30 39 154 39 54 159 46 62 154 39 54 +146 36 50 138 34 49 138 37 53 135 40 58 141 40 57 150 36 50 +159 35 49 171 39 51 185 38 47 150 36 50 105 35 55 79 28 45 +58 26 51 52 25 42 49 25 40 30 10 18 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +7 2 4 117 31 44 171 39 51 185 38 47 166 48 64 145 47 69 +118 50 79 108 54 86 105 35 55 73 26 42 76 28 47 105 35 55 +76 28 47 58 26 51 58 26 51 58 26 51 52 24 38 64 24 39 +121 37 56 171 39 51 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 152 32 42 121 30 42 102 29 42 124 34 50 +124 35 54 113 41 62 113 41 62 113 41 62 113 41 62 118 34 52 +133 35 50 159 35 49 159 35 49 133 35 50 88 29 45 79 28 45 +58 26 51 52 25 42 49 25 40 42 17 30 10 4 6 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 16 5 9 105 35 55 113 41 62 100 28 46 89 29 45 +76 28 47 76 28 47 73 26 42 76 28 47 105 35 55 105 35 55 +58 26 51 58 26 51 58 26 51 58 26 51 56 25 45 60 22 36 +101 29 42 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 124 30 42 86 29 44 +105 35 55 105 35 55 105 35 55 76 28 47 76 28 47 105 35 55 +100 28 46 116 30 44 152 32 42 138 34 49 79 28 45 62 26 49 +52 25 42 52 25 42 49 25 40 49 25 40 28 8 14 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 7 2 4 60 26 44 110 32 46 102 29 42 +97 28 42 118 34 52 121 37 56 113 41 62 113 41 62 73 26 48 +58 26 51 58 26 51 58 26 51 61 26 49 62 26 49 52 25 42 +71 23 37 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 171 39 51 133 35 50 +97 28 42 86 29 44 76 28 47 73 26 48 76 28 47 88 29 45 +69 20 33 79 27 44 139 38 56 125 35 52 76 28 47 58 26 51 +58 26 51 52 25 42 49 25 40 49 25 40 30 10 18 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 1 0 0 57 17 29 152 32 42 +185 38 47 166 48 64 123 43 68 108 54 86 105 35 55 58 26 51 +58 26 51 58 24 38 58 26 51 58 26 51 56 25 45 54 19 32 +105 35 55 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +159 35 49 117 31 42 86 29 44 71 23 37 71 23 37 67 23 37 +71 23 37 116 30 44 138 37 53 105 35 55 76 28 47 58 26 51 +58 26 51 52 25 42 49 25 40 49 25 40 35 12 21 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 28 8 14 +102 29 42 110 32 46 105 35 55 76 28 47 65 27 44 61 26 49 +49 25 40 56 25 45 58 26 51 58 26 51 58 20 33 71 23 37 +159 38 55 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 171 39 51 150 36 50 128 33 49 118 34 52 89 29 45 +89 29 45 105 35 55 89 29 45 73 26 48 61 26 49 58 26 51 +52 25 42 52 25 42 49 25 40 49 25 40 39 15 26 1 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 3 1 1 10 4 6 35 12 21 58 26 51 +58 26 51 58 26 51 58 26 51 49 25 40 69 20 33 171 39 51 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 171 39 51 +171 39 51 151 38 54 133 35 50 121 37 56 105 35 55 105 35 55 +76 28 47 62 26 49 73 26 48 58 26 51 58 26 51 58 26 51 +52 25 42 52 25 42 49 25 40 49 25 40 40 15 29 9 3 6 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 4 6 +51 24 39 56 25 45 66 25 40 110 32 46 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 171 39 51 139 37 53 +125 35 52 118 34 52 105 35 55 105 35 55 88 29 45 76 28 47 +62 26 49 61 26 49 62 26 49 58 26 51 56 25 45 49 25 40 +52 25 42 52 25 42 49 25 40 42 17 30 42 17 30 22 7 12 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +10 4 6 71 23 37 119 34 51 159 38 55 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 171 39 51 152 32 42 138 34 46 118 34 52 +105 35 55 89 29 45 76 28 47 76 28 47 73 26 48 73 26 48 +62 26 49 58 26 51 61 26 49 52 25 42 52 25 42 58 26 51 +58 26 51 49 25 40 49 25 40 48 19 31 50 18 33 28 8 14 +1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 48 16 29 125 41 61 128 42 60 145 39 54 171 39 51 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 159 38 55 141 40 57 124 34 50 100 28 46 89 29 45 +86 29 44 76 28 47 73 26 48 67 27 47 58 26 51 62 26 49 +58 26 51 56 25 45 56 25 45 58 26 51 58 26 51 58 26 51 +52 25 42 49 25 40 49 25 40 42 17 30 35 12 21 16 5 9 +1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 22 7 12 89 29 45 113 41 62 118 50 79 122 42 63 +132 43 63 144 40 57 159 38 55 153 36 50 171 39 51 150 39 55 +135 40 58 128 41 59 113 41 62 105 35 55 105 35 55 76 28 47 +73 26 48 73 26 48 73 26 48 58 26 51 58 26 51 58 26 51 +58 26 51 58 26 51 58 26 51 58 26 51 52 25 42 49 25 40 +49 25 40 49 25 40 49 25 40 50 18 33 20 6 10 1 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 7 2 4 56 22 36 76 28 47 105 35 55 113 41 62 +118 50 79 113 41 62 123 43 68 113 41 62 122 40 63 119 40 62 +113 41 62 105 35 55 105 35 55 89 29 45 76 28 47 73 26 48 +73 26 48 73 26 48 58 26 51 58 26 51 58 26 51 58 26 51 +58 26 51 58 26 51 58 26 51 52 25 42 52 25 42 49 25 40 +49 25 40 48 19 31 42 17 30 42 17 30 22 7 12 1 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 31 10 18 69 20 33 86 29 44 89 29 45 +105 35 55 105 35 55 118 50 79 113 41 62 113 41 62 105 35 55 +105 35 55 105 35 55 105 35 55 76 28 47 73 26 48 67 27 47 +58 26 51 58 26 51 58 26 51 58 26 51 58 26 51 58 26 51 +58 26 51 58 26 51 52 25 42 49 25 40 49 25 40 49 25 40 +49 25 40 50 18 33 40 15 29 48 16 29 16 5 9 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 86 29 44 97 28 42 105 35 55 88 29 45 +88 29 45 105 35 55 113 41 62 113 41 62 108 54 86 108 54 86 +105 35 55 105 35 55 76 28 47 76 28 47 73 26 48 58 26 51 +58 26 51 58 26 51 58 26 51 58 26 51 58 26 51 52 25 42 +49 25 40 49 25 40 49 25 40 49 25 40 49 25 40 50 18 33 +42 17 30 39 15 26 38 12 21 28 8 14 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 28 8 14 185 38 47 162 38 49 86 29 44 79 28 45 +76 28 47 113 41 62 118 50 79 108 54 86 108 54 86 108 54 86 +105 35 55 76 28 47 76 28 47 62 26 49 62 26 49 58 26 51 +58 26 51 56 25 45 52 25 42 52 25 42 49 25 40 49 25 40 +49 25 40 49 25 40 49 25 40 48 19 31 42 17 30 39 15 26 +39 15 26 38 12 21 42 17 30 28 8 14 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 57 17 29 185 38 47 185 38 47 171 39 51 119 34 51 +89 29 45 105 35 55 108 54 86 108 54 86 108 54 86 108 54 86 +73 26 48 73 26 48 62 26 49 73 26 48 58 26 51 58 26 51 +58 26 51 58 26 51 52 25 42 49 25 40 49 25 40 49 25 40 +49 25 40 48 19 31 42 17 30 39 15 26 39 15 26 42 17 30 +42 17 30 49 25 40 52 25 42 35 12 21 4 0 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 69 20 33 185 38 47 185 38 47 185 38 47 185 38 47 +154 39 54 119 40 62 105 35 55 105 35 55 105 35 55 105 35 55 +76 28 47 73 26 48 62 26 49 58 26 51 58 26 51 56 25 45 +61 26 49 49 25 40 42 17 30 50 18 33 48 19 31 42 17 30 +42 17 30 42 17 30 42 17 30 49 25 40 49 25 40 58 26 51 +58 26 51 49 25 40 48 19 31 42 17 30 7 1 3 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 69 20 33 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 166 48 64 135 40 58 105 35 55 88 29 45 88 29 45 +76 28 47 62 26 49 60 26 44 52 24 38 49 25 40 49 25 40 +57 25 43 58 24 38 52 24 38 49 25 40 49 25 40 50 18 33 +49 25 40 50 18 33 48 19 31 52 25 42 58 26 51 58 26 51 +58 26 51 52 25 42 48 19 31 42 17 30 4 0 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 41 13 21 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 152 40 56 119 34 51 105 35 55 +88 29 45 76 28 47 65 27 44 64 25 43 65 27 44 73 26 48 +76 28 47 76 28 47 76 28 47 60 26 44 48 19 31 42 17 30 +48 19 31 49 25 40 49 25 40 42 17 30 52 25 42 52 25 42 +52 25 42 52 25 42 49 25 40 48 19 31 10 4 6 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 16 5 9 152 32 42 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 166 48 64 134 49 77 +119 40 62 113 41 62 105 35 55 105 35 55 105 35 55 105 35 55 +105 35 55 88 29 45 105 35 55 76 28 47 73 26 48 58 24 38 +42 17 30 42 17 30 42 17 30 42 17 30 42 17 30 42 17 30 +52 25 42 56 25 45 49 25 40 49 25 40 30 10 18 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 9 3 6 102 29 42 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 171 39 51 +152 49 69 152 40 56 141 42 59 131 42 64 126 41 60 105 35 55 +105 35 55 113 41 62 105 35 55 88 29 45 105 35 55 105 35 55 +61 26 49 48 19 31 49 25 40 42 17 30 42 17 30 42 17 30 +48 19 31 49 25 40 49 25 40 49 25 40 40 15 29 3 1 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 16 5 9 159 35 49 185 38 47 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +166 48 64 166 48 64 159 46 63 144 40 57 136 44 65 125 41 61 +113 41 62 113 41 62 105 35 55 105 35 55 105 35 55 105 35 55 +76 28 47 61 26 49 48 19 31 48 19 31 48 19 31 42 17 30 +49 25 40 49 25 40 50 18 33 49 25 40 42 17 30 22 7 12 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 36 11 20 171 39 51 185 38 47 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 185 38 47 171 39 51 154 39 54 144 40 57 128 42 60 +113 41 62 105 35 55 105 35 55 105 35 55 105 35 55 76 28 47 +73 26 48 58 26 51 58 26 51 49 25 40 42 17 30 42 17 30 +42 17 30 49 25 40 42 17 30 48 19 31 49 25 40 42 17 30 +7 2 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 28 8 14 152 32 42 +185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 185 38 47 +185 38 47 171 39 51 159 46 62 144 40 57 144 40 57 129 39 59 +113 41 62 105 35 55 105 35 55 105 35 55 76 28 47 73 26 48 +58 26 51 58 26 51 58 26 51 58 26 51 52 25 42 42 17 30 +42 17 30 42 17 30 48 19 31 49 25 40 49 25 40 49 25 40 +35 12 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 36 11 20 +144 40 57 152 40 56 152 40 56 159 38 55 159 38 55 166 48 64 +166 48 64 159 46 63 145 47 69 130 43 63 119 40 62 105 35 55 +105 35 55 105 35 55 105 35 55 93 57 98 76 28 47 58 26 51 +58 26 51 58 26 51 58 26 51 58 26 51 52 25 42 49 25 40 +49 25 40 49 25 40 49 25 40 49 25 40 49 25 40 49 25 40 +48 19 31 16 5 9 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 2 4 +86 29 44 118 50 79 118 50 79 118 50 79 129 39 59 136 44 65 +126 41 60 123 42 67 118 50 79 108 54 86 108 54 86 105 35 55 +105 35 55 105 35 55 76 28 47 73 26 48 58 26 51 58 26 51 +58 26 51 58 26 51 58 26 51 49 25 40 49 25 40 52 25 42 +49 25 40 49 25 40 49 25 40 49 25 40 49 25 40 49 25 40 +48 19 31 36 11 20 9 3 6 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 30 10 18 +108 54 86 76 28 47 105 35 55 113 41 62 118 50 79 113 41 62 +113 41 62 108 54 86 105 35 55 105 35 55 105 35 55 105 35 55 +76 28 47 76 28 47 73 26 48 58 26 51 58 26 51 58 26 51 +58 26 51 58 26 51 52 25 42 52 25 42 52 25 42 49 25 40 +52 25 42 49 25 40 49 25 40 49 25 40 49 25 40 49 25 40 +42 17 30 50 18 33 35 12 21 4 0 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 39 15 26 +105 35 55 105 35 55 113 41 62 105 35 55 76 28 47 76 28 47 +76 28 47 88 29 45 76 28 47 73 26 48 67 27 47 65 27 44 +62 26 49 62 26 49 67 27 47 60 26 44 52 25 42 52 25 42 +49 25 40 56 25 45 52 25 42 50 18 33 49 25 40 49 25 40 +52 25 42 56 25 45 52 25 42 49 25 40 49 25 40 49 25 40 +49 25 40 49 25 40 42 17 30 28 8 14 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 41 13 21 +129 39 59 152 40 56 159 46 63 133 43 64 105 35 55 66 25 40 +67 27 47 61 25 44 65 27 44 76 28 47 79 28 45 86 29 44 +89 29 45 88 29 45 67 27 47 49 25 40 52 24 38 52 24 38 +51 24 39 49 25 40 49 25 40 52 25 42 56 25 45 58 26 51 +62 26 49 56 25 45 42 17 30 35 12 21 42 17 30 49 25 40 +49 25 40 42 17 30 48 19 31 42 17 30 28 8 14 4 0 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 7 2 4 67 23 37 +134 49 77 152 49 69 166 48 64 166 48 64 145 39 54 102 29 42 +100 28 46 77 27 45 60 26 44 73 26 48 113 41 62 138 37 53 +133 35 50 131 38 56 105 35 55 76 28 47 66 25 40 76 28 47 +88 29 45 105 35 55 76 28 47 73 26 48 73 26 48 73 26 48 +73 26 48 48 19 31 10 4 6 0 0 0 18 7 11 49 25 40 +52 25 42 49 25 40 49 25 40 49 25 40 49 25 40 35 12 21 +10 4 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 42 17 30 76 28 47 +141 92 121 167 135 158 167 135 158 141 92 121 141 92 121 131 80 105 +116 30 44 105 35 55 67 23 37 76 28 47 118 50 79 152 49 69 +159 46 62 148 37 53 124 35 54 110 32 46 79 27 44 105 35 55 +136 44 65 134 49 77 118 50 79 108 54 86 76 28 47 58 26 51 +76 28 47 30 10 18 0 0 0 0 0 0 0 0 0 28 8 14 +52 25 42 52 25 42 52 25 42 52 25 42 52 25 42 49 25 40 +49 25 40 31 10 18 10 4 6 1 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 1 0 0 18 7 11 108 54 86 89 29 45 +133 43 64 142 34 47 137 33 45 128 41 59 134 49 77 141 92 121 +143 45 64 121 37 56 73 26 42 118 50 79 131 80 105 141 92 121 +141 92 121 141 92 121 152 49 69 152 49 69 110 32 46 120 32 46 +138 37 53 139 44 68 119 40 62 88 29 45 93 57 98 93 57 98 +58 26 51 49 25 40 0 0 0 0 0 0 0 0 0 0 0 0 +22 7 12 50 18 33 49 25 40 58 26 51 58 26 51 58 26 51 +52 25 42 49 25 40 49 25 40 40 15 29 31 10 18 28 8 14 +18 7 11 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 49 25 40 +93 57 98 49 25 40 73 26 42 79 28 45 118 50 79 146 108 143 +167 135 158 159 124 153 141 92 121 166 48 64 152 49 69 135 40 58 +124 37 57 121 37 56 86 29 44 105 35 55 139 44 66 124 35 54 +110 32 46 116 30 44 123 34 49 128 42 60 121 37 56 117 31 44 +133 35 50 139 38 56 105 35 55 93 57 98 137 96 131 146 108 143 +93 57 98 56 25 45 16 5 9 0 0 0 0 0 0 0 0 0 +1 0 0 30 10 18 41 14 25 39 15 26 49 25 40 52 25 42 +52 25 42 58 26 51 58 26 51 52 25 42 52 25 42 42 17 30 +50 18 33 35 12 21 18 7 11 7 2 4 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 4 6 +18 7 11 18 7 11 10 4 6 10 4 6 30 10 18 39 15 26 +30 10 18 22 7 12 30 10 18 60 26 44 76 28 47 105 35 55 +134 49 77 141 92 121 141 92 121 141 92 121 166 48 64 131 80 105 +145 47 69 145 47 69 152 49 69 141 92 121 141 92 121 139 44 68 +105 35 55 86 29 44 86 29 44 131 80 105 141 92 121 148 114 145 +148 114 145 141 92 121 166 48 64 152 49 69 105 35 55 112 32 46 +133 35 50 128 41 59 105 35 55 88 61 125 146 108 143 146 108 143 +88 61 125 58 26 51 49 25 40 22 7 12 0 0 0 0 0 0 +0 0 0 0 0 0 3 1 1 10 4 6 31 10 18 42 17 30 +48 19 31 52 25 42 58 26 51 58 26 51 52 25 42 52 25 42 +58 26 51 56 25 45 48 19 31 42 17 30 30 10 18 22 7 12 +16 5 9 7 1 3 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 +10 4 6 35 12 21 58 26 51 108 66 98 140 102 127 171 141 162 +180 150 172 171 141 162 131 80 105 76 28 47 76 28 47 105 35 55 +113 41 62 125 35 52 166 48 64 141 92 121 141 92 121 166 48 64 +166 48 64 166 48 64 152 49 69 136 44 65 152 49 69 141 92 121 +141 92 121 152 49 69 123 34 49 113 41 62 119 40 62 89 29 45 +118 50 79 120 71 102 118 50 79 123 43 68 121 37 56 105 35 55 +113 41 62 123 43 68 134 49 77 152 49 69 128 42 60 118 34 52 +129 39 59 130 43 63 105 35 55 93 63 110 146 108 143 146 108 143 +93 57 98 58 26 51 58 26 51 48 19 31 1 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 7 2 4 +22 7 12 30 10 18 35 12 21 42 17 30 52 25 42 58 26 51 +58 26 51 58 26 51 56 25 45 52 25 42 52 25 42 49 25 40 +48 19 31 42 17 30 31 10 18 20 6 10 7 2 4 7 1 3 +7 2 4 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 10 4 6 35 12 21 49 25 40 120 71 102 167 135 158 +191 162 183 210 187 199 234 219 224 243 232 234 241 229 231 226 205 215 +233 215 221 233 215 221 219 198 209 159 124 153 108 66 98 105 35 55 +123 43 68 152 49 69 166 48 64 162 38 49 142 34 47 123 33 48 +119 34 51 126 41 60 136 44 65 116 30 44 102 29 42 110 32 46 +123 43 68 134 49 77 131 80 105 134 49 77 134 49 77 118 50 79 +118 50 79 134 49 77 134 49 77 134 49 77 134 49 77 118 34 52 +97 28 42 69 20 33 79 27 44 97 28 42 112 32 46 128 41 59 +132 43 63 123 43 68 118 50 79 76 28 47 93 57 98 93 57 98 +62 26 49 58 26 51 58 26 51 49 25 40 4 0 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 3 1 1 1 0 0 9 3 6 39 15 26 31 10 18 +30 10 18 48 19 31 60 25 40 52 25 42 52 25 42 52 25 42 +52 25 42 52 25 42 58 24 38 52 25 42 54 21 35 50 18 33 +40 15 29 31 10 18 22 7 12 10 4 6 10 4 6 7 2 4 +3 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +49 25 40 140 102 127 171 141 162 210 187 199 238 224 228 248 240 240 +243 232 234 245 236 237 245 236 237 243 232 234 234 219 224 231 213 218 +238 224 228 228 209 216 202 176 194 167 135 158 148 114 145 137 96 131 +108 54 86 113 41 62 121 37 56 130 43 63 134 49 77 138 88 121 +140 102 127 159 124 153 180 150 172 148 114 145 131 80 105 113 41 62 +105 35 55 113 41 62 134 49 77 130 43 63 145 47 69 141 92 121 +131 80 105 143 45 66 110 32 46 97 28 42 102 29 42 102 29 42 +110 32 46 119 34 51 125 35 52 128 41 59 126 41 60 128 42 60 +132 43 63 123 43 68 118 50 79 113 41 62 76 28 47 58 26 51 +58 26 51 58 26 51 58 26 51 73 26 48 30 10 18 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +1 0 0 7 2 4 16 5 9 22 7 12 35 12 21 42 17 30 +50 18 33 48 19 31 54 19 32 60 22 36 63 22 36 63 22 36 +58 24 38 52 24 38 58 20 33 48 16 29 47 16 28 36 11 20 +31 10 18 22 7 12 7 1 3 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 10 4 6 120 71 102 +191 162 183 210 187 199 226 205 215 238 224 228 233 215 221 234 219 224 +238 224 228 241 229 231 243 232 234 238 224 228 234 219 224 228 209 216 +233 215 221 219 198 209 191 162 183 167 135 158 148 114 145 108 66 98 +108 54 86 131 80 105 171 141 162 202 176 194 228 209 216 238 224 228 +241 229 231 245 236 237 248 240 240 248 240 240 238 224 228 219 198 209 +191 162 183 131 80 105 105 35 55 105 35 55 128 41 59 140 40 59 +144 40 57 152 40 56 139 38 56 141 40 57 141 43 61 141 42 59 +141 43 61 131 38 56 135 40 58 135 40 58 128 41 59 131 42 64 +134 49 77 118 50 79 108 54 86 108 54 86 93 57 98 93 57 98 +73 26 48 58 26 51 58 26 51 58 26 51 58 26 51 18 7 11 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 1 1 +7 1 3 7 1 3 10 4 6 16 5 9 20 6 10 41 14 25 +57 17 29 57 17 29 57 17 29 69 20 33 60 21 35 54 19 32 +57 17 29 48 19 31 41 14 25 28 8 14 16 5 9 3 1 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 62 26 49 167 135 158 +226 205 215 202 176 194 180 150 172 191 162 183 202 176 194 226 205 215 +231 213 218 231 213 218 231 213 218 219 198 209 210 187 199 202 176 194 +202 176 194 202 176 194 171 141 162 137 96 131 131 80 105 140 102 127 +210 187 199 238 222 225 243 232 234 248 240 240 248 240 240 248 240 240 +245 236 237 243 232 234 238 224 228 241 229 231 238 222 225 238 222 225 +233 215 221 210 187 199 171 141 162 131 80 105 105 35 55 131 42 64 +145 47 69 152 40 56 159 46 62 144 40 57 141 43 61 143 45 64 +140 40 59 135 40 58 130 43 63 131 42 64 131 42 64 123 43 68 +118 50 79 108 54 86 108 54 86 93 57 98 76 28 47 76 28 47 +76 28 47 58 26 51 58 26 51 58 26 51 58 26 51 30 10 18 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 1 1 +7 1 3 20 6 10 31 10 18 41 13 21 57 17 29 57 17 29 +69 20 33 69 20 33 79 27 44 71 23 37 71 23 37 57 17 29 +36 11 20 38 12 21 16 5 9 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 3 1 1 140 102 127 +210 187 199 226 205 215 210 187 199 210 187 199 210 187 199 210 187 199 +210 187 199 210 187 199 202 176 194 202 176 194 180 150 172 191 162 183 +180 150 172 171 141 162 146 108 143 95 59 101 196 169 185 245 236 237 +238 224 228 234 219 224 238 224 228 238 224 228 243 232 234 243 232 234 +245 236 237 245 236 237 238 224 228 231 213 218 238 224 228 226 205 215 +219 198 209 202 176 194 196 169 185 167 135 158 120 71 102 105 35 55 +134 49 77 152 49 69 159 46 62 159 46 63 152 40 56 152 40 56 +139 44 66 134 49 77 134 49 77 134 49 77 118 50 79 118 50 79 +108 54 86 93 57 98 73 26 48 93 57 98 58 26 51 58 26 51 +58 26 51 58 26 51 58 26 51 58 26 51 93 57 98 49 25 40 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 3 1 1 10 4 6 7 2 4 +10 4 6 28 8 14 57 17 29 97 28 42 102 29 42 97 28 42 +86 29 44 69 20 33 69 20 33 41 13 21 20 6 10 16 5 9 +9 3 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 49 25 40 +196 169 185 228 209 216 226 205 215 233 215 221 234 219 224 238 224 228 +238 224 228 234 219 224 233 215 221 231 213 218 202 176 194 180 150 172 +171 141 162 146 108 143 137 96 131 196 169 185 238 224 228 243 232 234 +241 229 231 234 219 224 233 215 221 234 219 224 241 229 231 234 219 224 +238 224 228 234 219 224 228 209 216 219 198 209 191 162 183 191 162 183 +202 176 194 191 162 183 159 124 153 148 114 145 137 96 131 93 57 98 +113 41 62 134 49 77 145 47 69 145 47 69 134 49 77 134 49 77 +134 49 77 118 50 79 108 54 86 108 54 86 108 54 86 76 28 47 +73 26 48 73 26 48 73 26 48 58 26 51 58 26 51 58 26 51 +58 26 51 93 57 98 93 57 98 93 57 98 88 61 125 58 26 51 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 4 0 1 36 11 20 69 20 33 +102 29 42 117 31 42 102 29 42 71 23 37 71 23 37 61 21 34 +41 13 21 9 3 6 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 1 1 +67 27 47 167 135 158 210 187 199 219 198 209 226 205 215 234 219 224 +226 205 215 233 215 221 234 219 224 226 205 215 219 198 209 180 150 172 +167 135 158 137 96 131 137 96 131 226 205 215 210 187 199 202 176 194 +219 198 209 226 205 215 226 205 215 219 198 209 228 209 216 226 205 215 +210 187 199 202 176 194 202 176 194 191 162 183 171 141 162 167 135 158 +159 124 153 159 124 153 137 96 131 137 96 131 88 61 125 93 63 110 +76 28 47 118 50 79 118 50 79 118 50 79 108 54 86 108 54 86 +108 54 86 108 54 86 76 28 47 73 26 48 76 28 47 73 26 48 +58 26 51 58 26 51 58 26 51 58 26 51 93 57 98 88 61 125 +88 61 125 88 61 125 88 61 125 93 57 98 58 26 51 49 25 40 +3 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +1 0 0 41 13 21 102 29 42 132 30 39 97 28 42 69 20 33 +71 23 37 47 16 28 1 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 18 7 11 93 57 98 108 54 86 140 102 127 167 135 158 +171 141 162 167 135 158 159 124 153 159 124 153 159 124 153 146 108 143 +137 96 131 93 63 110 93 57 98 219 198 209 231 213 218 219 198 209 +202 176 194 191 162 183 171 141 162 167 135 158 171 141 162 167 135 158 +159 124 153 159 124 153 148 114 145 146 108 143 146 108 143 146 108 143 +137 96 131 137 96 131 88 61 125 88 61 125 88 61 125 93 57 98 +73 26 48 105 35 55 105 35 55 76 28 47 73 26 48 73 26 48 +76 28 47 58 26 51 58 26 51 93 57 98 93 57 98 93 57 98 +88 61 125 88 61 125 88 61 125 88 61 125 88 61 125 88 61 125 +88 61 125 93 57 98 93 57 98 40 15 29 16 5 9 1 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 4 0 1 69 20 33 132 30 39 117 31 42 +86 29 44 69 20 33 9 3 6 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 4 6 +58 26 51 140 102 127 140 102 127 219 198 209 238 224 228 234 219 224 +226 205 215 226 205 215 219 198 209 202 176 194 196 169 185 171 141 162 +159 124 153 146 108 143 138 88 121 108 66 98 93 63 110 93 63 110 +93 63 110 93 63 110 88 61 125 88 61 125 88 61 125 88 61 125 +93 57 98 93 57 98 93 57 98 93 57 98 93 57 98 93 57 98 +93 57 98 88 61 125 88 61 125 88 61 125 88 61 125 88 61 125 +88 61 125 88 61 125 88 61 125 88 61 125 88 61 125 88 61 125 +58 26 51 40 15 29 7 2 4 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 102 29 42 102 29 42 +71 23 37 79 27 44 38 12 21 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 3 1 1 167 135 158 202 176 194 210 187 199 +228 209 216 228 209 216 228 209 216 228 209 216 226 205 215 219 198 209 +210 187 199 191 162 183 180 150 172 148 114 145 137 96 131 137 96 131 +88 61 125 88 61 125 88 61 125 88 61 125 88 61 125 88 61 125 +88 61 125 88 61 125 88 61 125 88 61 125 88 61 125 88 61 125 +88 61 125 88 61 125 88 61 125 88 61 125 88 61 125 88 61 125 +88 61 125 88 61 125 58 26 51 40 15 29 16 5 9 3 1 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 57 17 29 97 28 42 +97 28 42 86 29 44 41 14 25 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 7 2 4 52 25 42 131 80 105 +148 114 145 196 169 185 219 198 209 226 205 215 233 215 221 219 198 209 +202 176 194 202 176 194 191 162 183 171 141 162 148 114 145 146 108 143 +137 96 131 88 61 125 88 61 125 88 61 125 88 61 125 88 61 125 +88 61 125 88 61 125 88 61 125 88 61 125 88 61 125 88 61 125 +88 61 125 88 61 125 93 57 98 58 26 51 58 26 51 49 25 40 +18 7 11 9 3 6 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 16 5 9 69 20 33 28 8 14 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 7 1 3 97 28 42 97 28 42 +71 23 37 61 21 34 36 11 20 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 22 7 12 52 25 42 67 27 47 93 57 98 93 57 98 +93 57 98 93 57 98 58 26 51 93 57 98 58 26 51 58 26 51 +58 26 51 58 26 51 58 26 51 58 26 51 58 26 51 58 26 51 +49 25 40 40 15 29 40 15 29 16 5 9 9 3 6 3 1 1 +1 0 0 4 0 1 1 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 41 13 21 148 30 39 185 38 47 152 32 42 28 8 14 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 20 6 10 86 29 44 97 28 42 69 20 33 +47 16 28 40 15 29 30 10 18 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 28 8 14 +97 28 42 185 38 47 185 38 47 159 35 49 152 32 42 102 29 42 +28 8 14 7 2 4 0 0 0 1 0 0 7 1 3 28 8 14 +31 10 18 57 17 29 97 28 42 69 20 33 54 19 32 48 19 31 +28 8 14 9 3 6 1 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 16 5 9 69 20 33 121 30 42 152 32 42 +185 38 47 152 32 42 152 32 42 152 32 42 141 31 41 132 30 39 +97 28 42 69 20 33 57 17 29 69 20 33 69 20 33 71 23 37 +71 23 37 71 23 37 51 18 32 58 20 33 48 19 31 18 7 11 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 10 4 6 39 15 26 +54 19 32 97 28 42 148 30 39 185 38 47 185 38 47 185 38 47 +159 35 49 152 32 42 152 32 42 148 30 39 142 31 41 141 31 41 +132 30 39 117 31 42 97 28 42 73 26 42 67 22 35 58 20 33 +47 16 28 47 16 28 40 15 29 40 15 29 22 7 12 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 10 4 6 47 16 28 69 20 33 131 32 43 +152 32 42 185 38 47 185 38 47 185 38 47 185 38 47 159 35 49 +148 30 39 148 30 39 152 32 42 141 31 41 148 30 39 152 32 42 +138 32 45 102 29 42 71 23 37 52 24 38 48 19 31 47 16 28 +41 14 25 41 14 25 41 14 25 41 13 21 4 0 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +7 1 3 102 29 42 148 30 39 185 38 47 185 38 47 185 38 47 +162 38 49 152 32 42 152 32 42 148 30 39 148 30 39 132 30 39 +124 30 42 117 31 42 117 31 42 97 28 42 97 28 42 86 29 44 +71 23 37 47 16 28 36 11 20 41 13 21 28 8 14 28 8 14 +28 8 14 22 7 12 16 5 9 16 5 9 4 0 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +22 7 12 117 31 42 102 29 42 97 28 42 69 20 33 69 20 33 +57 17 29 47 16 28 47 16 28 41 13 21 41 13 21 41 13 21 +41 13 21 41 13 21 36 11 20 41 13 21 30 10 18 7 2 4 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 diff --git a/drivers/video/logo/logo_debian_clut224.ppm b/drivers/video/logo/logo_debian_clut224.ppm new file mode 100644 index 00000000000..0daf7736ab5 --- /dev/null +++ b/drivers/video/logo/logo_debian_clut224.ppm @@ -0,0 +1,883 @@ +P3 +64 80 +255 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 36 1 13 99 3 37 93 2 34 135 4 50 95 3 36 +41 1 15 21 0 7 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 64 2 24 +154 4 57 213 6 80 228 7 85 227 7 85 226 7 85 209 6 78 +217 7 81 194 6 73 98 3 37 95 3 36 126 4 47 159 4 59 +147 4 55 150 4 56 175 4 65 106 3 39 43 1 16 2 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 9 0 3 87 2 32 177 5 66 224 7 84 +225 7 85 218 7 82 215 7 81 215 7 81 214 6 80 217 7 82 +217 7 82 219 7 82 226 7 85 227 7 85 226 7 85 225 7 84 +225 7 85 224 7 84 223 7 84 227 7 85 219 7 82 182 5 68 +106 3 39 24 0 9 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +4 0 1 90 2 33 191 6 71 227 7 85 223 7 84 216 7 81 +214 7 80 214 7 81 215 7 81 215 7 81 215 7 81 215 7 81 +214 7 80 215 7 81 215 7 81 215 7 81 215 7 81 214 7 81 +215 7 81 215 7 81 214 7 80 215 7 81 217 7 81 222 7 83 +228 7 86 206 6 77 120 3 45 41 1 15 63 1 23 104 3 39 +49 1 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 62 1 23 +182 5 68 228 7 85 221 7 83 215 7 81 214 7 80 215 7 81 +215 7 81 215 7 81 215 7 81 215 7 81 215 7 81 215 7 81 +215 7 81 215 7 81 215 7 81 215 7 81 215 7 81 215 7 81 +215 7 81 215 7 81 215 7 81 215 7 81 215 7 81 214 7 80 +215 7 81 219 7 82 226 7 85 219 7 82 223 7 84 231 7 86 +215 7 80 40 1 15 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 9 0 3 133 4 50 225 7 84 +223 7 84 215 7 81 214 7 80 215 7 81 215 7 81 215 7 81 +215 7 81 215 7 81 215 7 81 214 7 80 215 7 81 216 7 81 +216 7 81 216 7 81 217 7 81 218 7 82 218 7 82 218 7 82 +217 7 82 216 7 81 215 7 81 214 7 81 214 7 81 215 7 81 +215 7 81 214 7 80 215 7 81 217 7 81 216 7 81 214 7 80 +221 7 83 204 6 76 81 2 30 57 1 21 2 0 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 1 0 0 99 3 37 171 4 64 229 7 86 216 7 81 +214 7 80 214 7 81 215 7 81 215 7 81 215 7 81 215 7 81 +214 7 81 214 7 80 217 7 81 224 7 84 227 7 85 222 7 83 +219 7 82 222 7 83 210 5 78 205 6 77 202 5 76 205 6 77 +209 6 78 219 7 82 225 7 84 227 7 85 224 7 84 219 7 82 +215 7 81 214 7 80 215 7 81 215 7 81 215 7 81 214 7 81 +214 7 80 220 7 82 221 7 83 217 7 81 166 5 62 26 0 9 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +6 0 2 148 4 55 232 7 87 222 7 83 214 7 80 214 7 80 +215 7 81 215 7 81 215 7 81 215 7 81 215 7 81 214 7 80 +215 7 81 225 7 84 214 6 80 153 4 56 95 3 36 54 1 20 +42 1 16 51 1 19 26 0 10 16 0 6 14 0 5 16 0 6 +24 0 9 41 1 15 68 1 25 105 2 39 155 4 58 199 6 74 +225 7 84 225 7 84 217 7 81 214 7 80 214 7 81 215 7 81 +215 7 81 214 7 80 216 7 81 217 7 81 227 7 85 201 6 75 +54 1 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 14 0 5 +166 5 62 229 7 86 215 7 81 214 7 81 214 7 80 215 7 81 +215 7 81 215 7 81 215 7 81 214 7 80 217 7 82 225 7 85 +225 7 84 160 4 59 42 1 15 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12 0 4 +68 1 25 151 4 56 215 7 80 225 7 84 215 7 81 214 7 80 +215 7 81 215 7 81 215 7 81 214 7 80 214 7 80 222 7 83 +215 6 81 71 2 26 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 22 0 8 180 5 67 +228 7 85 214 7 80 214 7 80 215 7 81 215 7 81 215 7 81 +214 7 80 215 7 81 219 7 82 227 7 85 207 6 77 147 4 55 +64 2 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 43 1 16 159 5 60 227 7 85 218 7 82 +214 7 80 215 7 81 215 7 81 215 7 81 214 7 81 214 7 80 +220 7 82 222 7 83 74 2 28 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 22 0 8 183 5 68 227 7 85 +214 7 80 214 7 80 215 7 81 215 7 81 215 7 81 214 7 80 +217 7 81 225 7 85 195 5 73 163 5 61 90 2 33 10 0 4 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 97 3 36 215 5 80 +221 7 83 214 7 80 214 7 81 215 7 81 215 7 81 215 7 81 +214 7 80 220 7 82 216 7 80 55 1 20 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 10 0 3 175 4 65 227 7 85 214 7 80 +214 7 80 215 7 81 215 7 81 215 7 81 214 7 80 220 7 82 +214 5 80 105 3 39 13 0 5 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 57 1 21 +204 6 76 222 7 83 214 7 80 214 7 81 215 7 81 215 7 81 +215 7 81 214 7 80 222 7 83 201 6 75 29 0 10 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 124 4 46 230 7 86 214 7 80 214 7 80 +215 7 81 215 7 81 214 7 80 215 7 81 222 7 83 206 5 76 +58 1 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +41 1 15 201 6 75 222 7 83 214 7 80 215 7 81 215 7 81 +215 7 81 214 7 81 214 7 80 226 7 85 170 5 63 3 0 1 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 43 1 16 211 6 79 218 7 81 214 7 80 215 7 81 +214 7 81 214 7 80 217 7 81 226 7 85 206 6 77 105 3 39 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 42 1 15 206 6 77 220 7 82 214 7 80 215 7 81 +215 7 81 215 7 81 214 7 80 215 7 80 229 7 86 105 3 39 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +5 0 1 183 5 68 224 7 84 214 7 80 215 7 81 214 7 80 +214 7 80 222 7 83 214 5 80 115 3 43 19 0 7 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 62 1 23 219 6 82 217 7 81 214 7 80 +215 7 81 215 7 81 215 7 81 214 7 80 219 7 82 211 6 79 +30 1 11 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +69 1 26 226 7 85 215 7 81 214 7 81 214 7 80 214 7 80 +226 7 85 191 6 71 49 1 18 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 104 3 39 228 7 85 214 7 80 +214 7 81 215 7 81 215 7 81 215 7 81 214 7 80 227 7 85 +138 3 51 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 51 1 19 0 0 0 0 0 0 0 0 0 +162 4 60 224 7 84 214 7 80 214 7 80 214 7 80 227 7 85 +170 5 64 20 0 7 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 166 5 62 224 7 84 +214 7 80 215 7 81 215 7 81 214 7 80 215 7 81 220 7 82 +214 6 80 32 1 12 0 0 0 0 0 0 +0 0 0 5 0 2 49 1 18 0 0 0 0 0 0 40 1 15 +218 6 81 216 7 81 214 7 80 214 7 80 228 7 85 163 5 61 +8 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 37 1 14 214 6 80 +216 7 81 214 7 81 214 7 81 214 7 80 222 7 83 215 7 81 +228 7 85 106 3 39 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 32 1 12 174 5 65 +222 7 83 214 7 80 214 7 80 227 7 85 163 5 61 8 0 3 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 129 4 48 +226 7 85 214 7 80 215 7 81 222 7 83 115 3 43 44 1 16 +140 3 52 85 2 31 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 15 0 5 201 6 75 225 7 84 +214 7 80 214 7 80 225 7 84 178 4 66 12 0 4 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 26 0 9 +210 5 78 217 7 81 215 7 81 227 7 85 79 2 30 0 0 0 +36 1 13 82 2 31 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 97 3 36 229 7 86 215 7 80 +214 7 80 221 7 83 199 5 74 25 0 9 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +145 4 54 224 7 84 214 7 80 222 7 83 168 5 62 40 1 15 +0 0 0 20 0 7 0 0 0 0 0 0 +0 0 0 0 0 0 4 0 1 185 6 69 221 7 83 214 7 80 +216 7 81 213 6 80 54 1 20 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 40 1 15 110 3 41 163 5 61 188 6 70 +194 6 73 182 5 68 145 4 54 80 2 30 13 0 5 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +64 2 24 224 7 84 215 7 80 214 7 80 226 7 84 188 6 70 +3 0 1 0 0 0 0 0 0 0 0 0 +6 0 2 0 0 0 62 1 23 225 7 84 215 7 81 215 7 81 +223 7 83 126 4 47 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +43 1 16 160 4 59 230 7 86 233 7 87 193 6 72 147 4 55 +117 3 44 106 3 39 120 3 45 150 4 56 159 4 59 90 2 33 +9 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +12 0 4 201 6 75 218 7 81 214 7 80 218 7 81 213 6 80 +25 0 9 0 0 0 0 0 0 0 0 0 +33 1 12 0 0 0 145 4 54 226 7 84 214 7 80 214 7 80 +224 7 84 154 4 57 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 95 3 36 +225 7 84 226 7 85 140 3 52 50 1 18 4 0 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 8 0 3 56 1 21 +76 2 28 17 0 6 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 163 5 61 222 7 83 215 7 81 219 7 82 183 5 68 +51 1 19 0 0 0 0 0 0 0 0 0 +1 0 0 17 0 6 204 6 76 219 7 82 215 7 81 215 7 80 +224 7 84 71 2 26 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 102 2 37 239 7 89 +175 4 65 44 1 16 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 14 0 5 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 131 4 49 225 7 84 215 7 81 224 7 84 142 4 53 +8 0 3 0 0 0 0 0 0 0 0 0 +0 0 0 80 2 30 226 7 85 215 7 80 214 7 80 222 7 83 +172 4 64 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 50 1 19 235 7 88 148 4 55 +7 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 97 3 36 224 7 84 215 7 81 219 7 82 202 6 75 +20 0 7 0 0 0 0 0 0 0 0 0 +0 0 0 151 4 56 225 7 84 214 7 80 215 7 80 222 7 83 +62 1 23 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 25 0 9 195 5 73 162 4 60 2 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 53 1 20 220 7 82 215 7 81 215 7 80 227 7 85 +87 2 32 0 0 0 0 0 0 0 0 0 +15 0 6 202 5 76 219 7 82 214 7 81 222 7 83 166 5 62 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 3 0 1 175 4 65 207 6 77 15 0 5 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 56 1 21 221 7 83 214 7 81 216 7 80 223 7 83 +58 1 21 0 0 0 0 0 0 0 0 0 +64 2 24 224 7 84 215 7 80 215 7 81 223 7 84 77 2 29 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 71 1 26 239 7 89 80 2 30 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 50 1 18 219 7 82 215 7 81 215 7 81 225 7 84 +76 2 28 0 0 0 0 0 0 0 0 0 +52 1 19 221 7 82 216 7 80 215 7 80 212 6 80 32 1 12 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 160 4 59 193 6 72 1 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 43 1 16 216 7 81 216 7 81 214 7 81 220 7 82 +182 5 68 22 0 8 0 0 0 0 0 0 +33 1 12 212 6 80 217 7 81 217 7 81 204 6 76 19 0 7 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +20 0 7 220 5 82 111 3 41 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 43 1 16 216 7 81 216 7 81 214 7 81 221 7 83 +186 5 70 6 0 2 0 0 0 0 0 0 +32 1 12 212 6 80 217 7 81 218 7 82 194 6 73 7 0 2 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +117 3 44 232 7 87 47 1 17 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 41 1 15 36 1 13 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 48 1 18 218 7 82 215 7 81 214 7 80 231 7 86 +111 3 41 0 0 0 0 0 0 0 0 0 +41 1 15 218 7 82 216 7 80 221 7 83 177 5 66 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +180 5 67 211 6 79 16 0 6 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 15 0 5 16 0 6 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 69 1 26 223 7 83 214 6 80 220 7 82 188 6 70 +47 1 17 0 0 0 0 0 0 0 0 0 +41 1 15 217 7 81 217 7 81 223 7 83 157 5 59 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 1 +193 5 72 195 5 73 4 0 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 56 1 21 215 6 81 216 6 81 224 7 84 104 3 39 +0 0 0 0 0 0 0 0 0 0 0 0 +51 1 19 221 7 82 216 7 81 224 7 83 135 4 50 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 0 2 +199 5 74 193 6 72 1 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 33 0 12 212 6 80 218 7 82 217 7 81 36 1 13 +0 0 0 0 0 0 0 0 0 0 0 0 +53 1 20 222 7 83 215 7 81 225 7 84 115 3 43 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 0 2 +193 5 72 221 7 82 62 1 23 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 71 1 26 223 7 83 219 7 82 205 6 76 17 0 6 +0 0 0 0 0 0 0 0 0 0 0 0 +53 1 20 222 7 83 215 7 81 225 7 84 97 3 36 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +182 5 68 233 7 87 97 3 36 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 142 4 53 224 7 84 224 7 84 160 4 59 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +42 1 16 218 7 82 216 7 81 224 7 83 82 2 31 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +157 5 59 233 7 88 133 4 50 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +13 0 5 206 6 77 218 7 82 226 7 85 71 2 26 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +44 1 16 219 7 82 216 7 81 223 7 84 79 2 30 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +112 3 42 233 7 87 185 6 69 2 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 26 0 10 7 0 2 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22 0 8 +140 3 52 222 7 83 222 7 83 177 5 66 3 0 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +54 1 20 222 7 83 215 7 81 223 7 83 79 2 30 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +48 1 18 223 7 84 223 7 83 53 1 20 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 159 5 60 +231 7 86 218 7 82 234 7 87 80 2 30 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +50 1 18 221 7 82 216 7 80 224 7 84 82 2 31 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +1 0 0 174 5 65 233 7 87 150 4 56 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 10 0 3 18 0 6 19 0 7 9 0 3 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 180 5 67 +225 7 84 199 6 74 110 3 41 20 0 7 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +41 1 15 217 7 81 217 7 81 225 7 84 106 3 39 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 68 1 25 228 7 85 222 7 83 56 1 21 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 21 0 8 87 2 32 117 3 44 19 0 7 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 43 1 16 207 6 77 +229 7 86 98 2 36 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +30 1 11 211 6 79 217 7 81 223 7 83 151 4 56 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 148 4 55 235 7 88 188 6 70 13 0 4 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 60 1 22 207 6 77 225 7 84 +221 7 83 34 0 12 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +15 0 6 201 6 75 219 7 82 216 7 81 209 6 78 36 1 13 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 53 1 20 +10 0 3 0 0 0 15 0 5 188 6 70 236 7 88 158 4 59 +4 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 80 2 30 215 7 80 226 7 84 215 5 80 +76 2 28 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +1 0 0 186 5 70 221 7 83 214 7 80 225 7 84 77 2 29 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22 0 8 +55 1 20 7 0 2 0 0 0 33 0 12 202 6 75 237 7 89 +151 4 56 7 0 2 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 111 3 41 225 7 84 225 7 84 215 5 80 67 2 25 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 159 5 60 224 7 84 214 7 81 221 7 83 53 1 20 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +36 1 13 26 0 9 39 1 14 0 0 0 36 1 13 193 5 72 +238 7 89 174 5 65 36 1 13 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 16 0 6 75 2 28 +154 4 57 228 7 85 228 7 85 204 6 76 57 1 21 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 120 3 45 227 7 85 214 7 80 223 7 83 104 3 39 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 5 0 2 15 0 5 37 1 14 0 0 0 22 0 8 +172 4 64 238 7 89 211 6 79 106 3 39 14 0 5 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 50 1 18 182 5 68 230 7 86 +228 7 86 229 7 86 170 5 63 30 1 11 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 74 2 28 225 7 84 215 7 80 223 7 83 159 4 59 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 9 0 3 29 0 10 34 0 12 +3 0 1 135 4 50 230 7 86 232 7 87 199 6 74 126 4 47 +56 1 21 19 0 7 3 0 1 0 0 0 3 0 1 21 0 8 +67 2 25 131 4 49 170 5 63 221 7 83 228 7 86 228 7 86 +204 6 76 99 3 37 1 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 29 0 10 211 6 79 217 7 81 220 7 82 182 5 68 +2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 75 2 28 +126 4 47 22 0 8 98 2 36 205 6 77 230 7 86 238 7 89 +232 7 87 209 6 78 191 6 71 188 6 70 192 6 72 209 6 78 +230 7 86 235 7 88 235 7 88 226 7 85 193 6 72 112 3 42 +21 0 8 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 177 5 66 222 7 83 215 7 80 221 7 83 +57 1 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +54 1 20 140 3 52 133 3 49 47 1 17 68 1 25 126 4 47 +171 4 64 201 6 75 216 7 81 221 7 83 221 7 83 212 6 80 +199 6 74 172 4 64 126 4 47 64 2 24 10 0 3 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 117 3 44 227 7 85 214 7 80 221 7 83 +170 5 63 8 0 3 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 1 0 0 71 2 26 117 3 44 53 1 20 9 0 3 +0 0 0 6 0 2 19 0 7 26 0 10 27 0 10 24 0 9 +12 0 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 49 1 18 222 7 83 216 7 81 214 7 80 +220 7 82 189 6 71 133 4 50 12 0 4 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 34 0 12 64 2 24 +76 2 28 71 1 26 60 1 22 47 1 17 40 1 15 8 0 3 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 2 0 0 181 5 67 222 7 83 214 7 80 +214 7 81 221 7 83 233 7 88 140 3 52 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 12 0 4 21 0 8 22 0 8 16 0 6 2 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 102 2 37 227 7 85 214 7 80 +215 7 81 214 7 80 216 7 81 199 6 74 47 1 17 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 22 0 8 207 6 77 218 7 82 +214 7 81 215 7 81 223 7 84 120 3 45 42 1 15 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 133 4 50 227 7 85 +214 7 80 215 7 81 219 7 82 188 6 70 3 0 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 36 1 13 216 6 81 +217 7 81 214 7 81 214 7 80 227 7 85 110 3 41 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 138 3 51 +227 7 85 214 7 80 214 7 80 217 7 81 210 5 78 26 0 10 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29 0 10 +211 6 79 218 7 82 214 7 80 217 7 81 207 6 77 25 0 9 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +111 3 41 229 7 86 214 7 80 214 7 80 223 7 83 155 4 58 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +8 0 3 185 6 69 223 7 83 214 7 80 217 7 81 207 6 77 +14 0 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 56 1 21 223 7 84 217 7 81 214 7 80 225 7 84 +127 3 47 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 120 3 45 229 7 86 214 7 80 216 7 81 +223 7 83 62 1 23 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 4 0 1 171 4 64 226 7 84 214 7 80 +220 7 82 199 6 74 20 0 7 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 26 0 10 200 5 74 222 7 83 +214 7 80 226 7 85 157 5 59 12 0 4 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 54 1 20 216 5 80 +219 7 82 214 7 80 227 7 85 154 4 57 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 77 2 29 +224 7 84 218 7 82 216 7 81 223 7 84 60 1 22 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +87 2 32 224 7 84 218 7 82 220 7 82 193 6 72 17 0 6 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 87 2 32 224 7 84 219 7 82 221 7 83 188 5 69 +145 4 54 3 0 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 76 2 28 214 7 81 222 7 83 221 7 83 +231 7 86 145 4 54 3 0 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 53 1 20 199 6 74 226 7 85 +215 7 81 227 7 85 170 5 63 39 1 14 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 24 0 9 165 5 61 +229 7 86 218 7 82 230 7 86 95 3 36 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 +109 3 40 216 7 80 226 7 85 211 6 79 151 4 56 23 0 8 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 44 1 16 170 5 63 229 7 86 233 7 88 201 6 75 +99 3 37 51 1 19 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 81 2 30 185 6 69 232 7 87 +233 7 88 229 7 86 126 4 47 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 7 0 2 85 2 31 +177 5 66 224 7 84 238 7 89 143 4 53 12 0 4 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +1 0 0 54 1 20 131 4 49 201 6 75 191 6 71 104 3 39 +40 1 15 9 0 3 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 6 0 2 53 1 20 110 3 41 +131 4 49 119 3 44 97 3 36 71 1 26 32 1 12 1 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 diff --git a/drivers/video/logo/logo_exherbo_clut224.ppm b/drivers/video/logo/logo_exherbo_clut224.ppm new file mode 100644 index 00000000000..e9cedd26756 --- /dev/null +++ b/drivers/video/logo/logo_exherbo_clut224.ppm @@ -0,0 +1,963 @@ +P3 +71 80 +255 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 117 117 117 104 104 104 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 143 143 143 255 255 255 +179 179 179 19 19 19 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 34 34 34 104 104 104 16 16 16 +0 0 0 0 0 0 0 0 0 0 0 0 60 60 60 161 161 161 +98 98 98 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 112 106 107 255 255 255 +255 255 255 197 197 197 21 21 21 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 60 60 60 236 236 236 255 255 255 57 57 57 +0 0 0 0 0 0 1 1 1 117 117 117 251 251 251 255 255 255 +250 250 250 33 33 33 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 33 33 33 245 245 245 +255 255 255 255 255 255 141 140 140 0 0 0 0 0 0 0 0 0 +0 0 0 25 25 25 230 230 230 255 255 255 255 255 255 54 54 54 +0 0 0 0 0 0 34 34 34 254 254 254 255 255 255 255 255 255 +255 255 255 93 92 92 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 3 3 3 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 93 92 92 +255 255 255 222 222 222 30 30 30 10 10 10 45 45 45 0 0 0 +0 0 0 152 152 152 255 255 255 255 255 255 244 244 244 25 25 25 +0 0 0 0 0 0 45 45 45 254 254 254 255 255 255 255 255 255 +255 255 255 117 117 117 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 49 49 49 202 202 202 15 15 15 0 0 0 3 3 3 +54 54 54 61 61 61 18 17 17 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +88 88 88 54 51 52 0 0 0 168 168 168 156 156 156 0 0 0 +23 23 23 243 243 243 255 255 255 255 255 255 229 229 229 16 16 16 +0 0 0 0 0 0 38 38 38 250 250 250 255 255 255 255 255 255 +255 255 255 93 92 92 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 152 152 152 255 255 255 33 33 33 0 0 0 7 7 7 +164 164 164 255 255 255 229 229 229 82 82 82 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 112 106 107 255 255 255 191 191 191 0 0 0 +93 92 92 255 255 255 255 255 255 255 255 255 254 254 254 207 207 207 +57 57 57 0 0 0 18 17 17 236 236 236 255 255 255 255 255 255 +249 248 248 38 38 38 0 0 0 0 0 0 0 0 0 0 0 0 +49 47 48 246 246 246 251 251 251 30 30 30 0 0 0 0 0 0 +3 3 3 147 147 147 255 255 255 249 249 249 61 61 61 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 39 39 39 244 244 244 255 255 255 225 225 225 1 1 1 +161 161 161 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +249 248 248 117 117 117 1 1 1 205 205 205 255 255 255 255 255 255 +209 209 209 4 4 4 0 0 0 0 0 0 7 7 7 67 68 68 +227 227 227 255 255 255 253 253 253 88 88 88 0 0 0 0 0 0 +0 0 0 0 0 0 150 150 150 255 255 255 183 183 183 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 187 187 187 255 255 255 255 255 255 247 247 247 36 37 36 +201 201 201 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 181 181 181 141 140 140 251 251 251 255 255 255 +249 249 249 215 215 215 163 163 163 77 77 77 57 57 57 147 147 147 +245 245 245 255 255 255 255 255 255 247 247 247 182 182 182 36 37 36 +0 0 0 0 0 0 3 3 3 184 184 184 127 127 127 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +70 69 69 255 255 255 255 255 255 255 255 255 255 255 255 82 82 82 +221 221 221 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 249 249 249 253 253 253 255 255 255 +255 255 255 238 238 238 88 88 88 10 9 9 0 0 0 0 0 0 +39 39 39 216 216 216 255 255 255 255 255 255 176 176 176 12 12 12 +0 0 0 0 0 0 0 0 0 5 5 5 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +182 182 182 255 255 255 255 255 255 255 255 255 255 255 255 134 134 134 +234 234 234 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +244 244 244 54 54 54 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 54 54 54 249 248 248 143 143 143 1 1 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 28 26 26 +246 246 246 255 255 255 255 255 255 255 255 255 255 255 255 238 238 238 +252 252 252 255 255 255 255 255 255 184 184 184 98 98 98 67 68 68 +61 61 61 98 98 98 221 221 221 255 255 255 255 255 255 255 255 255 +156 156 156 0 0 0 0 0 0 20 20 22 97 100 116 26 27 30 +0 0 0 0 0 0 127 127 127 0 0 0 0 0 0 0 0 0 +22 22 22 30 27 28 12 13 12 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 88 88 88 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 161 161 161 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 42 42 42 243 243 243 255 255 255 255 255 255 +98 98 98 0 0 0 0 0 0 130 132 147 154 161 185 97 100 116 +0 0 0 0 0 0 67 68 68 30 31 31 8 8 8 184 184 184 +241 241 241 247 247 247 230 230 230 138 137 137 4 4 4 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 143 143 143 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 61 61 61 0 0 0 0 0 0 14 11 13 +4 5 9 0 0 0 0 0 0 204 204 204 255 255 255 255 255 255 +104 104 104 0 0 0 0 0 0 130 132 147 154 161 185 146 153 179 +4 5 9 0 0 0 70 69 69 238 238 238 225 225 225 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 150 150 150 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 179 179 179 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 82 82 82 0 0 0 0 0 0 76 72 85 +48 49 56 0 0 0 3 3 3 216 216 216 255 255 255 255 255 255 +159 159 159 0 0 0 0 0 0 48 49 56 154 161 185 130 132 147 +4 5 9 0 0 0 61 61 61 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 254 254 254 54 51 52 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 204 204 204 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 188 188 188 0 0 0 0 0 0 1 1 1 +0 0 0 0 0 0 49 47 48 250 250 250 255 255 255 255 255 255 +238 237 237 22 22 22 0 0 0 0 0 0 26 27 30 4 5 9 +0 0 0 0 0 0 127 127 127 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 156 156 156 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 3 3 3 216 216 216 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 117 117 117 3 3 3 0 0 0 +0 0 0 12 12 12 189 189 189 255 255 255 255 255 255 255 255 255 +255 255 255 174 174 174 2 2 2 0 0 0 0 0 0 0 0 0 +0 0 0 49 49 49 238 237 237 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 223 223 223 +8 8 8 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 5 5 5 219 219 219 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 212 212 212 49 49 49 0 0 0 +0 0 0 25 25 25 98 98 98 117 117 117 134 134 134 168 168 168 +201 201 201 238 238 238 179 179 179 70 69 69 39 39 39 60 60 60 +134 134 134 238 238 238 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 251 251 251 +36 37 36 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 211 211 211 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 194 194 194 67 68 68 0 0 0 0 0 0 0 0 0 +6 4 5 4 2 2 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 10 10 10 57 57 57 104 104 104 159 159 159 232 231 231 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +67 68 68 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 205 205 205 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +134 134 134 0 0 0 0 0 0 50 41 43 111 86 92 143 103 113 +156 121 129 163 123 133 152 115 124 143 103 113 122 96 102 111 86 92 +76 63 66 38 29 31 9 5 8 0 0 0 0 0 0 10 10 10 +75 75 75 166 165 165 238 237 237 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +117 117 117 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 187 187 187 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 134 134 134 +0 0 0 19 14 15 143 103 113 193 131 146 195 132 148 192 130 145 +191 129 144 191 129 144 191 129 145 192 130 145 193 131 146 195 132 148 +195 132 148 191 129 145 185 125 140 143 103 113 86 80 81 38 29 31 +0 0 0 0 0 0 19 19 19 117 117 117 244 244 244 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +164 164 164 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 125 125 125 +255 255 255 255 255 255 255 255 255 255 255 255 192 192 192 0 0 0 +19 19 19 163 123 133 195 132 148 186 126 141 189 128 143 192 130 145 +188 127 142 185 125 140 185 125 140 186 126 141 186 126 141 185 125 140 +185 125 140 186 126 141 188 127 143 192 130 145 195 132 148 191 129 144 +152 115 124 79 66 70 19 14 15 0 0 0 54 54 54 227 227 227 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +196 196 196 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 54 51 52 +253 253 253 255 255 255 255 255 255 251 251 251 54 54 54 0 0 0 +143 103 113 195 132 148 185 125 140 192 130 145 163 123 133 143 103 113 +185 125 140 189 128 143 185 125 140 186 126 141 186 126 141 186 126 141 +186 126 141 186 126 141 186 126 141 185 125 140 185 125 140 186 126 141 +191 129 145 196 133 148 185 125 140 65 56 58 0 0 0 39 39 39 +222 222 222 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +207 207 207 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 +205 205 205 255 255 255 255 255 255 188 188 188 0 0 0 60 53 55 +195 132 148 186 126 141 191 129 145 122 96 102 14 11 13 0 0 0 +38 29 31 163 123 133 189 128 143 186 126 141 186 126 141 186 126 141 +186 126 141 186 126 141 186 126 141 185 125 140 185 126 140 192 130 145 +192 130 145 191 129 144 196 133 148 193 131 146 79 66 70 0 0 0 +45 45 45 238 238 238 255 255 255 255 255 255 255 255 255 255 255 255 +206 206 206 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +98 98 98 255 255 255 255 255 255 98 98 98 0 0 0 143 103 113 +193 131 146 186 125 140 192 130 145 38 29 31 0 0 0 0 0 0 +0 0 0 111 86 92 195 132 148 186 126 141 186 126 141 186 126 141 +186 126 141 186 126 141 186 126 141 185 125 140 191 129 145 143 103 113 +50 41 43 38 35 39 122 96 102 193 131 146 196 133 148 79 66 70 +0 0 0 93 92 92 255 255 255 255 255 255 255 255 255 255 255 255 +187 187 187 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +7 7 7 217 217 217 255 255 255 42 42 42 10 7 8 185 125 140 +188 127 143 186 126 141 193 131 146 76 63 66 0 0 0 0 0 0 +0 0 0 143 103 113 192 130 145 186 126 141 186 126 141 186 126 141 +186 126 141 186 126 141 186 126 141 191 129 144 143 103 113 5 3 4 +0 0 0 0 0 0 4 2 2 143 103 113 193 131 146 188 127 142 +38 29 31 0 0 0 203 203 203 255 255 255 255 255 255 255 255 255 +147 147 147 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 82 82 82 255 255 255 42 42 42 10 7 8 185 125 140 +188 127 143 186 126 141 189 128 143 163 123 133 60 53 55 31 25 27 +79 66 70 188 127 142 186 126 141 186 126 141 186 126 141 186 126 141 +186 126 141 186 126 141 186 126 141 195 132 147 79 66 70 0 0 0 +0 0 0 0 0 0 0 0 0 86 80 81 193 131 146 193 131 146 +122 96 102 0 0 0 112 106 107 255 255 255 255 255 255 255 255 255 +82 82 82 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 187 187 187 104 104 104 0 0 0 143 103 113 +193 131 146 185 125 140 185 125 140 189 128 143 192 130 145 188 127 142 +193 131 146 186 126 141 185 125 140 186 126 141 186 126 141 186 126 141 +186 126 141 186 126 141 186 126 141 195 132 147 76 63 66 0 0 0 +0 0 0 0 0 0 0 0 0 79 66 70 195 132 148 189 128 143 +163 123 133 0 0 0 75 75 75 255 255 255 255 255 255 234 234 234 +16 16 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 34 34 34 163 163 163 0 0 0 60 53 55 +196 133 148 186 126 141 185 125 140 185 125 140 186 126 141 188 127 142 +186 126 141 185 125 140 186 126 141 186 126 141 186 126 141 186 126 141 +186 126 141 186 126 141 186 126 141 193 131 146 122 96 102 0 0 0 +0 0 0 0 0 0 0 0 0 122 96 102 193 131 146 192 130 145 +143 103 113 0 0 0 98 98 98 255 255 255 255 255 255 141 140 140 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 79 79 79 60 60 60 0 0 0 +122 96 102 196 133 148 188 127 142 185 125 140 185 125 140 186 126 141 +186 126 141 186 126 141 186 126 141 186 126 141 186 126 141 186 126 141 +186 126 141 186 126 141 186 126 141 186 126 141 189 128 143 76 63 66 +10 7 8 6 4 5 50 41 43 185 125 140 186 126 141 196 133 148 +76 63 66 0 0 0 168 168 168 255 255 255 238 238 238 23 23 23 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 79 79 79 19 19 19 +6 6 6 122 96 102 191 129 145 195 132 148 193 131 146 189 128 143 +188 127 142 186 126 141 186 126 141 185 125 140 186 126 141 186 126 141 +186 126 141 186 126 141 186 126 141 185 125 140 186 126 141 191 129 145 +163 123 133 152 115 124 186 126 141 189 128 143 196 133 148 143 103 113 +1 0 0 36 37 36 244 244 244 255 255 255 112 106 107 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 6 6 6 49 49 49 +12 13 12 0 0 0 31 25 27 79 66 70 143 103 113 163 123 133 +185 125 140 191 129 144 193 131 146 195 132 148 193 131 146 193 131 146 +192 130 145 191 129 144 189 128 143 188 127 143 188 127 142 188 127 142 +192 130 145 195 132 147 195 132 148 192 130 145 114 88 95 4 2 2 +4 4 4 192 192 192 255 255 255 187 187 187 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 +30 31 31 49 49 49 23 23 23 0 0 0 0 0 0 0 0 0 +14 11 13 38 29 31 60 53 55 79 66 70 114 88 95 143 103 113 +143 103 113 163 123 133 163 123 133 185 125 140 186 126 141 188 127 142 +186 126 141 163 123 133 122 96 102 50 41 43 0 0 0 12 13 12 +173 172 172 255 255 255 225 225 225 25 25 25 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 30 27 28 127 127 127 175 175 175 134 134 134 77 77 77 +42 42 42 15 15 15 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 5 3 4 19 14 15 27 23 24 31 25 27 +19 14 15 1 0 0 0 0 0 0 0 0 75 75 75 210 210 210 +255 255 255 236 236 236 54 54 54 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 61 61 61 187 187 187 255 255 255 +255 255 255 241 241 241 214 214 214 183 183 183 152 152 152 127 127 127 +104 104 104 79 79 79 57 57 57 39 39 39 30 31 31 25 25 25 +30 31 31 61 61 61 117 117 117 203 203 203 255 255 255 255 255 255 +227 227 227 57 57 57 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 67 68 68 +179 179 179 253 253 253 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 254 254 254 249 249 249 246 246 246 +250 250 250 255 255 255 255 255 255 255 255 255 255 255 255 185 185 185 +33 33 33 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 2 2 2 30 30 30 0 0 0 0 0 0 0 0 0 +0 0 0 36 37 36 117 117 117 188 188 188 236 236 236 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 199 199 199 88 88 88 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 19 19 19 232 231 231 136 136 136 19 19 19 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 18 17 17 54 54 54 +98 98 98 127 127 127 156 156 156 173 172 172 174 174 174 176 176 176 +163 163 163 117 117 117 49 47 48 0 0 0 0 0 0 0 0 0 +0 0 0 22 22 22 117 117 117 19 19 19 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 86 86 86 255 255 255 255 255 255 229 229 229 125 125 125 +25 25 25 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 9 9 +98 98 98 227 227 227 255 255 255 199 199 199 19 19 19 0 0 0 +3 3 3 28 26 26 8 8 8 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 +22 22 22 30 27 28 18 17 17 2 2 2 0 0 0 0 0 0 +0 0 0 197 197 197 255 255 255 255 255 255 255 255 255 255 255 255 +241 241 241 181 181 181 125 125 125 75 75 75 33 33 33 6 6 6 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 42 42 42 127 127 127 232 231 231 +255 255 255 255 255 255 255 255 255 255 255 255 204 204 204 22 22 22 +0 0 0 141 140 140 234 232 232 191 191 191 70 69 69 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 30 30 30 138 137 137 214 209 209 +236 236 236 241 239 239 232 231 231 216 216 216 98 98 98 0 0 0 +75 75 75 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 229 229 229 +188 188 188 147 147 147 112 106 107 86 86 86 77 77 77 77 77 77 +104 104 104 156 156 156 215 215 215 255 255 255 241 239 239 159 159 159 +75 75 75 104 104 104 255 255 255 255 255 255 255 255 255 205 205 205 +23 23 23 4 4 4 176 176 176 255 255 255 253 253 253 57 57 57 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 67 68 68 241 239 239 255 255 255 254 254 254 +255 250 250 255 250 250 255 255 255 243 243 243 38 38 38 8 8 8 +219 219 219 255 255 255 250 250 250 195 195 195 127 127 127 88 88 88 +82 82 82 117 117 117 134 134 134 152 152 152 176 176 176 202 202 202 +227 227 227 246 246 246 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 225 225 225 164 164 164 86 86 86 16 16 16 0 0 0 +0 0 0 125 125 125 255 255 255 255 255 255 255 255 255 255 255 255 +189 189 189 6 6 6 8 7 7 166 165 165 183 183 183 93 92 92 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 49 47 48 173 172 172 234 232 232 255 255 255 +255 255 255 255 255 255 255 255 255 90 84 86 0 0 0 138 137 137 +255 255 255 152 152 152 49 47 48 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +3 3 3 16 16 16 30 31 31 54 54 54 70 69 69 54 54 54 +30 27 28 2 2 2 0 0 0 0 0 0 0 0 0 0 0 0 +79 79 79 250 250 250 255 255 255 255 255 255 255 255 255 255 255 255 +230 230 230 141 140 140 2 2 2 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 22 22 22 82 82 82 +138 137 137 192 192 192 134 134 134 0 0 0 77 77 77 241 241 241 +79 79 79 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 54 51 52 +243 243 243 255 255 255 255 255 255 255 255 255 255 255 255 254 254 254 +205 205 205 210 210 210 117 117 117 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 38 38 38 212 212 212 57 57 57 +0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 3 3 3 +1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 23 23 23 217 217 217 +255 255 255 255 255 255 255 255 255 255 255 255 234 234 234 82 82 82 +104 104 104 206 206 206 208 208 208 79 79 79 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 10 10 10 159 159 159 45 45 45 0 0 0 +23 23 23 82 82 82 143 143 143 188 188 188 214 214 214 217 217 217 +213 213 213 205 205 205 189 189 189 174 174 174 152 152 152 127 127 127 +98 98 98 77 77 77 54 54 54 39 39 39 28 26 26 16 16 16 +10 10 10 15 15 15 33 33 33 98 98 98 217 217 217 255 255 255 +255 255 255 255 255 255 255 255 255 238 238 238 54 54 54 0 0 0 +30 30 30 199 199 199 203 203 203 195 195 195 34 34 34 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 82 82 82 49 49 49 60 60 60 168 168 168 +238 238 238 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 251 251 251 243 243 243 234 234 234 +225 225 225 234 234 234 247 247 247 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 232 231 231 61 61 61 0 0 0 0 0 0 +45 45 45 202 202 202 199 199 199 209 209 209 134 134 134 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 42 42 42 227 227 227 216 216 216 255 255 255 255 255 255 +255 255 255 249 248 248 205 205 205 171 170 170 176 176 176 219 219 219 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 175 175 175 30 30 30 0 0 0 0 0 0 0 0 0 +112 106 107 208 208 208 198 198 198 202 202 202 189 189 189 18 17 17 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 150 150 150 255 255 255 255 255 255 255 255 255 238 238 238 +134 134 134 36 37 36 0 0 0 0 0 0 0 0 0 7 7 7 +67 68 68 150 150 150 213 213 213 247 247 247 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 219 219 219 +93 92 92 0 0 0 0 0 0 0 0 0 0 0 0 30 30 30 +191 191 191 202 202 202 199 199 199 198 198 198 207 207 207 67 68 68 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +6 6 6 221 221 221 255 255 255 255 255 255 174 174 174 33 33 33 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 3 3 3 34 34 34 70 69 69 104 104 104 +134 134 134 152 152 152 164 164 164 177 177 177 187 187 187 192 192 192 +198 198 198 204 204 204 200 200 200 168 168 168 93 92 92 12 13 12 +0 0 0 0 0 0 0 0 0 0 0 0 16 16 16 163 163 163 +206 206 206 198 198 198 199 199 199 198 198 198 208 208 208 127 127 127 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +33 33 33 251 251 251 255 255 255 255 255 255 42 42 42 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 34 34 34 166 165 165 207 207 207 +198 198 198 198 198 198 199 199 199 199 199 199 203 203 203 179 179 179 +10 10 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +39 39 39 250 250 250 255 255 255 255 255 255 112 106 107 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8 8 +15 15 15 2 2 2 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 12 12 12 93 92 92 192 192 192 206 206 206 198 198 198 +198 198 198 199 199 199 199 199 199 199 199 199 200 200 200 203 203 203 +49 49 49 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +2 2 2 39 39 39 117 117 117 213 213 213 255 255 255 195 195 195 +176 176 176 168 168 168 168 168 168 176 176 176 201 201 201 225 225 225 +234 234 234 216 216 216 168 168 168 93 92 92 30 27 28 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 15 15 15 +88 88 88 177 177 177 209 209 209 202 202 202 198 198 198 198 198 198 +199 199 199 199 199 199 199 199 199 198 198 198 199 199 199 215 215 215 +112 106 107 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 7 7 7 112 106 107 245 245 245 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 243 243 243 189 189 189 +127 127 127 79 79 79 60 60 60 45 45 45 33 33 33 28 26 26 +28 26 26 33 33 33 54 51 52 82 82 82 125 125 125 182 182 182 +209 209 209 204 204 204 199 199 199 198 198 198 198 198 198 199 199 199 +199 199 199 198 198 198 198 198 198 202 202 202 208 208 208 166 165 165 +61 61 61 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 36 37 36 86 86 86 138 137 137 141 140 140 117 117 117 +70 69 69 15 15 15 0 0 0 0 0 0 0 0 0 34 34 34 +182 182 182 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 254 254 254 247 247 247 244 244 244 +244 244 244 249 249 249 238 238 238 212 212 212 206 206 206 203 203 203 +199 199 199 198 198 198 199 199 199 198 198 198 200 200 200 208 208 208 +207 207 207 198 198 198 206 206 206 192 192 192 88 88 88 4 4 4 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5 5 +2 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 7 7 7 98 98 98 +196 196 196 249 249 249 255 255 255 125 125 125 241 239 239 255 255 255 +255 255 255 229 229 229 134 134 134 18 17 17 0 0 0 0 0 0 +0 0 0 104 104 104 238 238 238 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 227 227 227 199 199 199 197 197 197 199 199 199 199 199 199 +199 199 199 198 198 198 198 198 198 203 203 203 201 201 201 117 117 117 +112 106 107 212 212 212 161 161 161 30 31 31 0 0 0 0 0 0 +0 0 0 30 31 31 112 106 107 174 174 174 211 211 211 223 223 223 +217 217 217 187 187 187 127 127 127 49 49 49 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 49 47 48 210 210 210 255 255 255 +255 255 255 255 255 255 188 188 188 0 0 0 147 147 147 255 255 255 +255 255 255 255 255 255 255 255 255 221 221 221 75 75 75 0 0 0 +0 0 0 0 0 0 39 39 39 191 191 191 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 241 241 241 +208 208 208 195 195 195 198 198 198 199 199 199 199 199 199 198 198 198 +198 198 198 199 199 199 208 208 208 194 194 194 67 68 68 0 0 0 +61 61 61 147 147 147 12 12 12 0 0 0 0 0 0 0 0 0 +0 0 0 86 86 86 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 253 253 253 183 183 183 61 61 61 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 4 4 4 163 163 163 247 247 247 255 255 255 +255 255 255 255 255 255 98 98 98 0 0 0 88 88 88 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 152 152 152 +16 16 16 0 0 0 0 0 0 5 5 5 141 140 140 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 249 249 249 222 222 222 198 198 198 +196 196 196 198 198 198 199 199 199 198 198 198 199 199 199 201 201 201 +207 207 207 206 206 206 159 159 159 45 45 45 0 0 0 23 23 23 +112 106 107 7 7 7 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 104 104 104 249 249 249 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 253 253 253 +134 134 134 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 30 31 31 196 196 196 205 205 205 249 248 248 +255 255 255 225 225 225 12 12 12 0 0 0 30 30 30 246 246 246 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +216 216 216 70 69 69 0 0 0 0 0 0 0 0 0 104 104 104 +252 252 252 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 252 252 252 230 230 230 203 203 203 195 195 195 198 198 198 +200 200 200 201 201 201 204 204 204 208 208 208 208 208 208 192 192 192 +141 140 140 60 60 60 2 2 2 0 0 0 15 15 15 125 125 125 +19 19 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 61 61 61 206 206 206 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 112 106 107 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 45 45 45 203 203 203 197 197 197 214 214 214 +255 255 255 117 117 117 0 0 0 0 0 0 0 0 0 209 209 209 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 253 253 253 127 127 127 0 0 0 0 0 0 0 0 0 +98 98 98 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +241 241 241 215 215 215 205 205 205 207 207 207 209 209 209 209 209 209 +205 205 205 195 195 195 171 170 170 134 134 134 75 75 75 23 23 23 +0 0 0 0 0 0 0 0 0 0 0 0 127 127 127 60 60 60 +0 0 0 0 0 0 98 98 98 192 192 192 34 34 34 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 7 7 7 112 106 107 +232 231 231 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 222 222 222 8 8 8 0 0 0 0 0 0 +0 0 0 0 0 0 34 34 34 199 199 199 201 201 201 203 203 203 +202 202 202 15 15 15 0 0 0 0 0 0 0 0 0 173 172 172 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 164 164 164 6 6 6 0 0 0 +0 0 0 117 117 117 206 206 206 206 206 206 189 189 189 159 159 159 +143 143 143 141 140 140 136 136 136 125 125 125 104 104 104 79 79 79 +54 51 52 25 25 25 2 2 2 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 77 77 77 143 143 143 0 0 0 +0 0 0 42 42 42 245 245 245 255 255 255 234 234 234 104 104 104 +7 7 7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +23 23 23 147 147 147 250 250 250 255 255 255 255 255 255 255 255 255 +255 255 255 254 254 254 45 45 45 0 0 0 0 0 0 +0 0 0 0 0 0 8 8 8 177 177 177 205 205 205 209 209 209 +75 75 75 0 0 0 0 0 0 0 0 0 0 0 0 159 159 159 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 143 143 143 +179 179 179 255 255 255 255 255 255 255 255 255 168 168 168 2 2 2 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 25 25 25 189 189 189 54 54 54 0 0 0 +0 0 0 182 182 182 255 255 255 255 255 255 255 255 255 255 255 255 +211 211 211 98 98 98 8 8 8 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 49 49 49 161 161 161 232 231 231 255 255 255 +255 255 255 252 252 252 54 51 52 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 117 117 117 225 225 225 141 140 140 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 179 179 179 +255 255 255 255 255 255 255 255 255 255 255 255 179 179 179 0 0 0 +93 92 92 255 255 255 255 255 255 255 255 255 255 255 255 127 127 127 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 5 5 5 156 156 156 184 184 184 5 5 5 0 0 0 +45 45 45 253 253 253 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 211 211 211 88 88 88 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 18 17 17 93 92 92 +211 211 211 215 215 215 36 37 36 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 30 31 31 138 137 137 16 16 16 +0 0 0 0 0 0 0 0 0 0 0 0 6 6 6 227 227 227 +255 255 255 255 255 255 255 255 255 253 253 253 49 47 48 0 0 0 +104 104 104 255 255 255 255 255 255 255 255 255 255 255 255 251 251 251 +49 49 49 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +6 6 6 136 136 136 217 217 217 127 127 127 0 0 0 0 0 0 +127 127 127 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 197 197 197 75 75 75 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +12 12 12 147 147 147 23 23 23 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 134 134 134 255 255 255 +255 255 255 255 255 255 255 255 255 187 187 187 0 0 0 0 0 0 +134 134 134 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +181 181 181 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 5 5 5 23 23 23 54 54 54 +156 156 156 208 208 208 209 209 209 86 86 86 0 0 0 0 0 0 +75 75 75 252 252 252 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +188 188 188 75 75 75 8 8 8 0 0 0 0 0 0 0 0 0 +25 25 25 98 98 98 6 6 6 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 33 33 33 136 136 136 234 234 234 255 255 255 +255 255 255 255 255 255 252 252 252 57 57 57 0 0 0 0 0 0 +147 147 147 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +253 253 253 54 51 52 0 0 0 0 0 0 2 2 2 4 4 4 +12 13 12 22 22 22 33 33 33 45 45 45 60 60 60 82 82 82 +98 98 98 117 117 117 147 147 147 173 172 172 191 191 191 203 203 203 +205 205 205 199 199 199 205 205 205 57 57 57 0 0 0 0 0 0 +0 0 0 61 61 61 156 156 156 217 217 217 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 196 196 196 125 125 125 112 106 107 138 137 137 +199 199 199 112 106 107 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 61 61 61 196 196 196 209 209 209 197 197 197 230 230 230 +255 255 255 255 255 255 125 125 125 0 0 0 0 0 0 0 0 0 +161 161 161 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 156 156 156 0 0 0 0 0 0 70 69 69 179 179 179 +182 182 182 191 191 191 197 197 197 202 202 202 206 206 206 208 208 208 +209 209 209 208 208 208 206 206 206 204 204 204 201 201 201 199 199 199 +198 198 198 199 199 199 200 200 200 39 39 39 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 6 6 6 57 57 57 136 136 136 +217 217 217 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +244 244 244 215 215 215 202 202 202 206 206 206 207 207 207 207 207 207 +203 203 203 39 39 39 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 82 82 82 205 205 205 208 208 208 198 198 198 202 202 202 +244 244 244 152 152 152 0 0 0 0 0 0 0 0 0 0 0 0 +192 192 192 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 227 227 227 12 12 12 0 0 0 49 47 48 208 208 208 +203 203 203 201 201 201 200 200 200 200 200 200 199 199 199 199 199 199 +198 198 198 199 199 199 199 199 199 199 199 199 198 198 198 199 199 199 +202 202 202 207 207 207 208 208 208 36 37 36 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +8 8 8 77 77 77 210 210 210 255 255 255 246 246 246 219 219 219 +197 197 197 194 194 194 197 197 197 198 198 198 197 197 197 205 205 205 +156 156 156 1 1 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 45 45 45 166 165 165 212 212 212 192 192 192 +88 88 88 0 0 0 0 0 0 0 0 0 0 0 0 21 21 21 +241 241 241 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 253 253 253 42 42 42 0 0 0 19 19 19 196 196 196 +211 211 211 204 204 204 201 201 201 199 199 199 199 199 199 198 198 198 +199 199 199 200 200 200 202 202 202 205 205 205 209 209 209 207 207 207 +191 191 191 159 159 159 112 106 107 12 13 12 0 0 0 19 19 19 +86 86 86 19 19 19 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 16 16 16 150 150 150 207 207 207 205 205 205 +202 202 202 197 197 197 197 197 197 197 197 197 198 198 198 208 208 208 +67 68 68 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 5 5 5 67 68 68 30 27 28 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 112 106 107 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 54 54 54 0 0 0 1 1 1 60 60 60 +127 127 127 174 174 174 196 196 196 205 205 205 207 207 207 208 208 208 +207 207 207 203 203 203 191 191 191 161 161 161 117 117 117 61 61 61 +22 22 22 0 0 0 0 0 0 0 0 0 0 0 0 18 17 17 +249 248 248 238 237 237 173 172 172 88 88 88 16 16 16 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 57 57 57 127 127 127 +168 168 168 199 199 199 198 198 198 197 197 197 209 209 209 136 136 136 +1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 38 38 38 238 237 237 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 249 249 249 30 31 31 0 0 0 0 0 0 0 0 0 +0 0 0 6 6 6 30 30 30 57 57 57 70 69 69 77 77 77 +70 69 69 49 49 49 22 22 22 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 +181 181 181 227 227 227 221 221 221 214 214 214 183 183 183 112 106 107 +36 37 36 6 6 6 0 0 0 0 0 0 0 0 0 0 0 0 +49 47 48 199 199 199 198 198 198 208 208 208 161 161 161 12 13 12 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 33 33 33 189 189 189 251 251 251 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 183 183 183 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +57 57 57 198 198 198 202 202 202 196 196 196 202 202 202 208 208 208 +197 197 197 175 175 175 159 159 159 156 156 156 152 152 152 147 147 147 +176 176 176 200 200 200 209 209 209 161 161 161 19 19 19 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 18 17 17 82 82 82 156 156 156 +225 225 225 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +234 234 234 39 39 39 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 60 60 60 185 185 185 208 208 208 199 199 199 197 197 197 +199 199 199 202 202 202 204 204 204 205 205 205 205 205 205 205 205 205 +205 205 205 208 208 208 141 140 140 15 15 15 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +42 42 42 104 104 104 184 184 184 232 231 231 247 247 247 216 216 216 +57 57 57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 25 25 25 134 134 134 202 202 202 207 207 207 +201 201 201 198 198 198 198 198 198 200 200 200 203 203 203 209 209 209 +188 188 188 93 92 92 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 15 15 15 30 30 30 10 9 9 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 49 49 49 134 134 134 +187 187 187 201 201 201 202 202 202 194 194 194 168 168 168 104 104 104 +23 23 23 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +16 16 16 42 42 42 45 45 45 28 26 26 2 2 2 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 diff --git a/drivers/video/logo/logo_fbsd_clut224.ppm b/drivers/video/logo/logo_fbsd_clut224.ppm new file mode 100644 index 00000000000..4387aa0456f --- /dev/null +++ b/drivers/video/logo/logo_fbsd_clut224.ppm @@ -0,0 +1,2403 @@ +P3 +120 120 +255 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 +1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 +2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 +1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 +2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 +2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 +2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 +2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 +1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 +1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 +2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 +2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 +2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 +2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 +2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 +1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 1 1 1 1 1 1 2 2 2 2 2 2 +2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 +2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 38 6 5 +38 6 5 44 12 10 44 12 10 44 12 10 44 12 10 44 12 10 +44 12 10 44 12 10 44 12 10 44 12 10 38 6 5 38 6 5 +38 6 5 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 +2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 +2 2 2 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 39 3 2 +39 3 2 39 3 2 39 3 2 39 3 2 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 +2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 38 6 5 +44 12 10 44 12 10 44 12 10 44 12 10 44 12 10 44 12 10 +44 12 10 44 12 10 44 12 10 44 12 10 44 12 10 44 12 10 +44 12 10 44 12 10 44 12 10 44 12 10 44 12 10 44 12 10 +44 12 10 44 12 10 44 12 10 44 12 10 44 12 10 38 6 5 +2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 +2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 39 3 2 39 3 2 39 3 2 39 3 2 2 2 2 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 39 3 2 97 5 3 131 20 10 +153 32 16 176 59 34 176 59 34 174 34 14 166 21 8 124 2 0 +86 4 2 39 3 2 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 2 2 2 +2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 +2 2 2 38 6 5 44 12 10 44 12 10 44 12 10 44 12 10 +44 12 10 44 12 10 44 12 10 44 12 10 44 12 10 44 12 10 +44 12 10 177 84 68 183 106 85 183 106 85 183 106 85 183 106 85 +183 106 85 183 106 85 183 106 85 177 84 68 44 12 10 44 12 10 +44 12 10 44 12 10 44 12 10 44 12 10 44 12 10 44 12 10 +44 12 10 44 12 10 44 12 10 38 6 5 2 2 2 2 2 2 +2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 +1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 39 3 2 86 4 2 141 11 5 +166 21 8 168 26 11 168 26 11 156 16 7 147 19 9 141 11 5 +97 5 3 39 3 2 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 39 3 2 124 2 0 147 19 9 176 59 34 +176 59 34 192 80 59 203 102 83 214 127 110 214 127 110 214 127 110 +203 99 81 209 61 24 153 32 16 86 4 2 39 3 2 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 1 1 1 2 2 2 2 2 2 2 2 2 +2 2 2 2 2 2 2 2 2 2 2 2 38 6 5 44 12 10 +44 12 10 44 12 10 44 12 10 44 12 10 44 12 10 44 12 10 +177 84 68 183 106 85 213 149 125 222 184 158 237 212 203 246 228 219 +253 252 251 253 253 252 253 253 252 254 254 253 254 254 253 255 255 255 +255 255 255 254 254 253 253 253 252 253 253 252 253 252 251 246 228 219 +237 212 203 222 184 158 213 149 125 183 106 85 177 84 68 44 12 10 +44 12 10 44 12 10 44 12 10 44 12 10 44 12 10 44 12 10 +38 6 5 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 +2 2 2 2 2 2 1 1 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +39 3 2 86 4 2 153 32 16 209 61 24 213 78 31 203 99 81 +203 99 81 203 99 81 192 80 59 193 53 28 164 15 5 149 3 1 +140 1 0 117 1 0 39 3 2 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 97 5 3 140 1 0 131 20 10 153 32 16 +174 34 14 176 59 34 191 90 72 214 127 110 236 173 149 236 173 149 +236 173 149 221 154 132 214 127 110 203 99 81 204 76 38 147 19 9 +39 3 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 +2 2 2 2 2 2 44 12 10 44 12 10 44 12 10 44 12 10 +44 12 10 44 12 10 44 12 10 183 106 85 222 184 158 237 212 203 +249 237 229 253 253 252 255 255 255 255 255 255 255 255 255 255 255 255 +254 254 253 253 253 252 253 253 252 253 253 252 254 254 253 254 254 253 +253 253 252 253 253 252 253 253 252 253 253 252 253 253 252 253 253 252 +255 255 255 255 255 255 255 255 255 254 254 253 249 237 229 237 212 203 +222 184 158 183 106 85 90 10 7 44 12 10 44 12 10 44 12 10 +44 12 10 44 12 10 44 12 10 38 6 5 2 2 2 2 2 2 +2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 39 3 2 136 24 13 +204 76 38 214 127 110 221 143 118 221 143 118 221 143 118 221 154 132 +221 143 118 214 127 110 192 80 59 168 26 11 153 0 0 142 1 0 +131 0 0 140 1 0 86 4 2 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 2 2 2 147 0 0 141 0 0 131 0 0 147 19 9 +153 32 16 174 34 14 184 62 32 203 102 83 221 154 132 236 194 173 +241 196 185 241 196 185 236 173 149 239 175 143 231 168 130 221 143 118 +203 99 81 153 32 16 44 12 10 1 1 1 0 0 0 1 1 1 +2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 +44 12 10 44 12 10 44 12 10 44 12 10 44 12 10 90 10 7 +183 106 85 222 184 158 249 237 229 253 253 252 255 255 255 255 255 255 +255 255 255 254 254 253 253 253 252 253 253 252 253 253 252 254 254 253 +254 254 253 254 254 253 254 254 253 254 254 253 254 255 253 255 255 255 +254 254 253 254 254 253 255 255 255 255 255 255 255 255 255 254 254 253 +254 254 253 253 253 252 253 253 252 253 253 252 255 255 255 255 255 255 +255 255 255 253 253 252 251 245 237 222 184 158 183 106 85 177 84 68 +44 12 10 44 12 10 44 12 10 44 12 10 44 12 10 38 6 5 +2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 +0 0 0 1 1 1 86 4 2 176 59 34 203 102 83 239 175 143 +236 173 149 236 173 149 237 187 164 237 187 164 236 194 173 237 187 164 +236 173 149 206 120 99 193 53 28 168 14 5 153 2 0 140 1 0 +131 0 0 140 1 0 131 0 0 2 2 2 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 39 3 2 157 0 0 145 0 0 124 2 0 140 1 0 +156 16 7 168 26 11 186 41 14 192 80 59 206 120 99 233 177 153 +245 214 205 249 237 229 245 214 205 241 196 185 237 187 164 239 175 143 +239 175 143 231 168 130 214 127 110 176 59 34 86 4 2 0 0 0 +2 2 2 2 2 2 2 2 2 2 2 2 44 12 10 44 12 10 +44 12 10 44 12 10 44 12 10 177 84 68 222 184 158 243 220 211 +255 255 255 255 255 255 254 254 253 253 253 252 253 253 252 253 253 252 +254 254 253 254 254 253 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 253 255 254 253 253 252 +253 252 251 253 252 251 253 253 252 255 255 255 255 255 255 243 220 211 +222 184 158 183 106 85 44 12 10 44 12 10 44 12 10 44 12 10 +44 12 10 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 +86 4 2 184 62 32 221 143 118 237 187 164 243 208 194 241 196 185 +241 196 185 241 205 194 243 210 197 245 214 205 243 210 197 237 187 164 +221 143 118 192 80 59 174 34 14 164 15 5 149 3 1 140 1 0 +124 2 0 142 0 0 150 0 0 39 3 2 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 39 3 2 166 0 0 150 0 0 131 0 0 131 0 0 +149 3 1 156 16 7 174 34 14 185 36 13 204 76 38 214 127 110 +237 187 164 251 245 237 254 254 253 250 233 221 243 208 194 241 196 185 +237 187 164 236 173 149 239 175 143 239 175 143 214 127 110 176 59 34 +90 10 7 2 2 2 2 2 2 44 12 10 44 12 10 44 12 10 +44 12 10 183 106 85 222 184 158 251 245 237 255 255 255 255 255 255 +253 253 252 253 253 252 254 254 253 254 254 253 254 254 253 254 254 253 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 253 252 251 251 245 237 249 237 229 249 237 229 +249 237 229 249 237 229 252 243 235 251 245 237 253 249 244 253 252 250 +253 253 252 253 255 254 254 254 253 253 253 252 253 252 251 254 254 253 +254 254 253 251 245 237 238 198 189 183 106 85 44 12 10 44 12 10 +44 12 10 44 12 10 2 2 2 2 2 2 90 10 7 192 80 59 +231 168 130 245 214 205 248 226 214 245 214 205 245 214 205 245 214 205 +248 226 214 250 233 221 252 242 234 249 237 229 241 205 194 221 154 132 +203 99 81 193 53 28 174 34 14 156 16 7 146 0 0 131 0 0 +124 2 0 150 0 0 157 0 0 39 3 2 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 39 3 2 167 0 0 159 0 0 131 0 0 131 0 0 +141 0 0 153 2 0 168 14 5 179 30 10 196 46 20 204 76 38 +206 120 99 237 187 164 251 240 231 255 255 255 252 243 235 245 214 205 +241 196 185 241 196 185 241 196 185 241 190 156 241 190 156 241 190 156 +221 143 118 176 59 34 44 12 10 44 12 10 44 12 10 177 84 68 +222 184 158 253 252 250 255 255 255 254 254 253 253 253 252 253 253 252 +254 254 253 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 254 254 253 249 237 229 243 220 211 243 220 211 243 220 211 +243 220 211 243 220 211 243 220 211 243 220 211 248 226 214 246 228 219 +250 233 221 249 237 229 253 249 244 253 252 251 253 255 254 253 255 254 +253 253 252 253 253 252 254 254 253 253 249 244 222 184 158 183 106 85 +44 12 10 44 12 10 90 10 7 184 62 32 231 168 130 248 226 214 +252 240 230 249 231 218 248 226 214 248 226 214 250 233 221 250 233 221 +252 243 235 253 253 252 253 252 251 245 214 205 236 173 149 203 99 81 +193 53 28 193 53 28 174 34 14 157 8 2 142 0 0 131 0 0 +131 0 0 157 0 0 163 0 0 39 3 2 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 2 2 2 170 0 0 167 0 0 140 1 0 124 2 0 +140 1 0 147 0 0 159 3 1 173 17 6 193 28 10 196 46 20 +209 61 24 203 99 81 221 154 132 245 214 205 251 240 231 246 228 219 +245 214 205 242 201 184 242 201 184 243 208 194 242 201 184 242 201 184 +242 201 184 242 201 184 227 164 124 183 106 85 222 184 158 251 245 237 +255 255 255 254 254 253 253 253 252 253 253 252 254 254 253 254 254 253 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +254 255 253 255 255 255 255 255 255 255 255 255 254 254 253 254 254 253 +254 254 253 254 254 253 254 254 253 254 254 253 254 254 253 255 255 255 +255 255 255 254 254 253 249 237 229 243 220 211 243 220 211 243 220 211 +243 220 211 243 220 211 243 220 211 243 220 211 243 220 211 243 220 211 +243 220 211 243 220 211 243 220 211 248 226 214 250 233 221 252 242 234 +253 249 244 253 252 251 253 253 252 253 253 252 255 255 255 253 252 250 +213 149 125 177 84 68 227 164 124 248 226 214 253 249 240 252 240 230 +251 236 222 251 238 227 251 238 227 252 240 230 252 242 234 254 252 249 +255 255 255 251 245 237 243 210 197 221 154 132 203 102 83 204 76 38 +193 53 28 193 53 28 164 15 5 150 0 0 140 1 0 124 2 0 +140 1 0 165 0 0 150 0 0 39 3 2 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 158 0 0 176 0 0 146 0 0 124 2 0 +131 0 0 145 0 0 155 2 1 172 5 1 180 20 5 193 28 10 +196 46 20 209 61 24 204 76 38 214 127 110 236 173 149 241 196 185 +243 208 194 243 210 197 243 208 194 243 208 194 245 214 205 245 214 205 +242 201 184 243 208 194 249 231 218 252 242 234 255 255 255 255 255 255 +253 253 252 253 253 252 254 254 253 254 255 253 254 255 253 255 255 255 +254 255 253 254 255 253 254 255 253 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 254 254 253 254 254 253 253 253 252 +254 254 253 254 254 253 254 254 253 254 253 250 254 254 253 255 255 255 +255 255 255 255 255 255 253 252 251 249 237 229 243 220 211 243 220 211 +243 220 211 243 220 211 243 220 211 243 220 211 243 220 211 243 220 211 +243 220 211 248 226 214 248 226 214 248 226 214 248 226 214 243 220 211 +246 228 219 249 237 229 252 243 235 253 252 251 253 249 240 241 190 156 +231 168 130 243 210 197 253 251 245 253 249 244 252 240 230 252 240 230 +252 243 235 252 242 234 252 242 234 251 245 237 254 252 249 253 249 244 +250 233 221 241 196 185 221 154 132 203 102 83 192 80 59 192 80 59 +193 53 28 168 26 11 157 0 0 146 0 0 131 0 0 124 2 0 +145 0 0 177 0 0 140 1 0 2 2 2 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 117 1 0 186 0 0 155 0 0 131 0 0 +131 0 0 141 0 0 153 2 0 163 1 0 176 6 2 191 24 6 +193 28 10 205 44 13 209 61 24 213 78 31 203 99 81 221 143 118 +239 175 143 237 187 164 242 201 184 243 208 194 243 210 197 247 223 207 +249 231 218 249 237 229 253 252 250 253 255 254 253 253 252 253 253 252 +254 254 253 254 254 253 254 255 253 254 255 253 254 255 253 254 255 253 +254 255 253 254 255 253 254 255 253 254 255 253 254 255 253 254 255 253 +254 255 253 254 254 253 254 254 253 254 253 250 254 253 250 254 254 253 +254 253 250 254 253 250 253 253 252 253 253 252 254 254 253 253 253 252 +253 253 252 253 253 252 254 254 253 253 253 252 252 243 235 243 220 211 +243 220 211 243 220 211 243 220 211 243 220 211 243 220 211 243 220 211 +243 220 211 238 198 189 206 120 99 176 59 34 176 59 34 176 59 34 +191 90 72 214 127 110 237 187 164 236 194 173 227 164 124 242 201 184 +253 248 237 253 252 251 253 249 240 251 245 237 253 249 240 253 249 240 +251 245 237 252 243 235 251 245 237 252 243 235 250 233 221 245 214 205 +237 187 164 221 154 132 214 127 110 203 99 81 192 80 59 192 80 59 +179 30 10 163 1 0 153 2 0 142 1 0 131 0 0 131 0 0 +153 0 0 191 24 6 111 7 4 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 86 4 2 196 0 0 163 0 0 140 1 0 +124 2 0 140 1 0 149 3 1 159 3 1 172 5 1 179 7 2 +191 24 6 210 31 6 213 49 12 209 61 24 213 78 31 213 78 31 +203 102 83 221 143 118 231 168 130 237 187 164 243 210 197 246 228 219 +251 245 237 253 252 251 253 253 252 253 253 252 254 254 253 254 254 253 +254 254 253 255 255 255 255 255 255 254 255 253 254 254 251 254 254 251 +254 255 253 254 255 253 254 255 253 254 254 251 254 254 251 254 255 253 +254 254 253 254 253 250 254 252 249 254 253 250 254 253 250 254 253 250 +254 253 250 253 252 251 253 253 252 253 253 252 253 253 252 253 253 252 +253 253 252 253 253 252 253 253 252 254 254 253 254 254 253 253 249 244 +246 228 219 243 220 211 243 220 211 243 220 211 243 220 211 243 220 211 +241 205 194 192 80 59 169 0 0 172 5 1 168 14 5 173 17 6 +173 17 6 173 17 6 204 67 22 231 168 130 251 238 227 255 255 255 +254 252 249 253 249 244 253 249 244 253 249 244 253 249 244 253 249 244 +253 249 240 251 245 237 252 240 230 248 226 214 241 205 194 236 173 149 +221 154 132 214 127 110 206 120 99 203 99 81 192 80 59 185 36 13 +172 5 1 159 3 1 149 3 1 140 1 0 124 2 0 140 1 0 +168 14 5 185 36 13 86 4 2 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 39 3 2 184 9 3 174 0 0 147 0 0 +131 0 0 131 0 0 145 0 0 155 2 1 167 2 1 176 6 2 +184 9 3 195 25 6 210 31 6 213 49 12 209 61 24 213 78 31 +203 99 81 203 102 83 214 127 110 231 168 130 245 214 205 253 249 244 +253 253 252 253 253 252 253 253 252 254 254 253 254 254 253 254 254 253 +254 254 253 254 254 253 254 254 253 254 254 251 254 254 251 254 255 253 +254 255 253 254 255 253 254 255 253 254 254 251 254 254 251 254 253 250 +254 252 249 254 252 249 254 252 249 254 252 249 254 252 249 254 252 249 +253 252 251 253 252 251 253 253 252 253 253 252 253 253 252 253 253 252 +253 253 252 253 253 252 253 253 252 253 253 252 253 253 252 254 254 253 +253 249 244 246 228 219 243 220 211 243 220 211 243 220 211 243 220 211 +213 149 125 165 0 0 167 2 1 168 14 5 168 14 5 168 14 5 +180 23 7 203 99 81 243 208 194 254 254 253 254 254 253 253 251 245 +253 251 245 254 252 249 254 252 249 253 249 244 253 249 244 253 249 244 +251 245 237 250 233 221 245 214 205 241 196 185 237 187 164 236 173 149 +221 143 118 214 127 110 203 102 83 203 99 81 196 46 20 176 6 2 +167 2 1 159 3 1 145 0 0 131 0 0 124 2 0 149 3 1 +193 53 28 174 34 14 2 2 2 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 2 2 2 147 19 9 191 24 6 157 0 0 +131 0 0 124 2 0 140 1 0 149 3 1 159 3 1 172 5 1 +184 9 3 184 9 3 210 31 6 210 31 6 209 61 24 213 78 31 +213 78 31 203 99 81 221 143 118 243 208 194 253 252 250 253 253 252 +253 253 252 254 254 253 254 254 253 253 253 252 254 254 253 253 253 252 +253 252 251 253 252 250 254 252 249 254 253 250 254 254 251 254 254 253 +254 254 251 254 255 253 254 255 253 254 253 250 254 252 249 253 251 245 +253 251 245 254 252 249 254 252 249 253 251 245 253 251 245 254 252 249 +254 252 249 254 252 249 254 252 249 254 252 249 254 252 249 254 252 249 +254 252 249 254 252 249 254 252 249 253 252 250 253 252 250 253 252 250 +253 252 251 253 252 250 249 237 229 243 220 211 237 212 203 243 220 211 +191 90 72 163 0 0 167 2 1 168 14 5 168 14 5 185 36 13 +227 164 124 253 248 237 255 255 255 254 254 253 254 252 249 254 252 249 +254 253 250 254 253 250 254 252 249 253 249 244 253 249 244 252 243 235 +249 231 218 245 214 205 241 196 185 237 187 164 236 173 149 239 175 143 +221 143 118 214 127 110 203 99 81 196 46 20 183 2 0 172 5 1 +163 1 0 153 2 0 140 1 0 131 0 0 131 0 0 168 26 11 +192 80 59 147 19 9 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 90 10 7 193 53 28 167 2 1 +141 0 0 124 2 0 131 0 0 146 0 0 159 3 1 167 2 1 +179 7 2 184 9 3 195 25 6 210 31 6 213 49 12 213 78 31 +213 78 31 214 127 110 245 214 205 253 255 254 253 253 252 253 253 252 +253 253 252 253 253 252 253 252 251 253 253 252 254 253 250 254 252 249 +253 251 245 254 252 249 254 252 249 254 253 250 254 253 250 254 253 250 +254 254 253 254 254 251 254 254 251 253 251 245 253 250 244 253 250 244 +253 250 244 253 250 244 253 251 245 253 250 244 253 249 244 253 249 244 +254 252 249 254 252 249 254 252 249 254 252 249 253 252 250 254 252 249 +254 252 249 254 252 249 254 252 249 253 252 250 253 252 250 253 252 250 +253 252 250 254 252 249 253 252 250 249 237 229 243 220 211 243 220 211 +192 80 59 164 0 0 167 2 1 167 2 1 189 46 14 234 180 140 +254 254 251 254 254 253 254 253 250 254 253 250 254 253 250 254 254 253 +253 253 252 254 252 249 254 252 249 253 249 244 252 243 235 249 231 218 +245 214 205 243 208 194 241 196 185 237 187 164 236 173 149 221 154 132 +221 143 118 203 102 83 196 46 20 189 0 0 179 7 2 167 2 1 +159 3 1 147 0 0 140 1 0 124 2 0 141 11 5 176 59 34 +204 76 38 86 4 2 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 39 3 2 193 53 28 185 36 13 +150 0 0 131 0 0 131 0 0 142 1 0 149 3 1 167 2 1 +174 10 3 184 9 3 195 25 6 210 31 6 213 49 12 209 61 24 +206 120 99 243 220 211 253 255 254 253 253 252 253 253 252 254 254 253 +253 252 251 253 252 251 253 252 251 254 252 249 253 249 244 253 249 244 +253 249 244 253 251 245 254 252 249 254 252 249 254 252 249 254 253 250 +254 253 250 254 253 250 254 252 249 253 249 240 253 249 240 253 249 244 +253 249 240 253 249 240 253 249 240 253 249 244 253 249 244 253 249 244 +253 249 244 253 249 244 253 249 244 253 249 244 253 249 244 253 249 244 +253 249 244 253 249 244 253 249 244 253 249 244 253 249 244 253 249 244 +253 249 244 253 249 244 253 249 244 253 249 244 252 243 235 246 228 219 +191 90 72 163 1 0 168 14 5 174 10 3 206 120 99 255 255 255 +254 254 253 253 253 252 254 254 253 254 254 253 254 254 253 254 254 253 +253 253 252 254 252 249 254 252 249 251 245 237 250 233 221 248 226 214 +245 214 205 243 208 194 241 196 185 236 173 149 236 173 149 221 154 132 +206 120 99 203 40 12 196 0 0 184 9 3 176 6 2 163 1 0 +153 2 0 142 1 0 131 0 0 131 0 0 153 32 16 191 90 72 +176 59 34 39 3 2 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 153 32 16 192 80 59 +159 13 5 140 1 0 124 2 0 140 1 0 149 3 1 157 8 2 +174 10 3 180 20 5 193 28 10 203 40 12 205 44 13 203 99 81 +243 220 211 253 255 254 253 253 252 253 253 252 253 253 252 253 252 251 +253 252 251 253 252 251 253 249 244 253 249 244 253 249 244 253 249 244 +253 249 244 253 249 244 253 251 245 254 252 249 253 251 245 254 252 249 +254 252 249 253 251 245 253 249 244 253 248 237 253 248 237 253 248 237 +253 248 237 253 248 237 253 248 237 253 249 240 253 249 244 253 249 244 +253 249 244 253 249 244 253 249 244 253 249 244 253 249 244 253 249 244 +253 249 244 253 249 244 253 249 244 253 249 244 253 249 244 253 249 244 +253 249 244 253 249 244 253 249 244 253 249 244 253 249 244 253 249 244 +214 127 110 159 3 1 159 13 5 187 29 9 234 180 140 255 255 255 +254 253 250 254 254 253 254 254 253 255 255 255 254 254 253 254 254 253 +253 253 252 254 252 249 253 249 244 251 238 227 249 231 218 247 223 207 +245 214 205 241 196 185 237 187 164 236 173 149 236 173 149 203 102 83 +210 31 6 196 0 0 192 0 0 179 7 2 172 5 1 159 3 1 +149 3 1 140 1 0 124 2 0 142 30 13 192 80 59 203 102 83 +111 7 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 44 12 10 203 99 81 +193 53 28 150 0 0 131 0 0 131 0 0 142 1 0 157 8 2 +168 14 5 180 23 7 193 28 10 196 46 20 203 99 81 237 212 203 +253 255 254 253 253 252 253 253 252 253 253 252 253 252 250 253 253 252 +253 252 250 253 249 244 251 245 237 251 245 237 253 249 244 253 249 244 +253 249 244 253 249 244 253 249 244 253 249 244 253 249 244 253 251 245 +253 249 244 253 249 244 251 245 237 252 244 235 252 244 235 252 246 236 +252 246 236 252 244 235 252 244 235 251 245 237 251 245 237 253 249 244 +253 249 244 251 245 237 253 249 244 253 249 244 253 249 244 251 245 237 +253 249 244 251 245 237 251 245 237 251 245 237 251 245 237 251 245 237 +251 245 237 251 245 237 251 245 237 251 245 237 251 245 237 253 252 250 +238 198 189 176 59 34 176 59 34 196 60 25 241 190 156 255 255 255 +254 254 253 255 255 255 254 255 253 255 255 255 254 254 253 254 254 253 +254 253 250 253 249 244 252 242 234 250 233 221 248 226 214 245 214 205 +243 208 194 241 196 185 237 187 164 236 173 149 203 99 81 210 31 6 +196 0 0 196 0 0 184 9 3 176 6 2 163 1 0 153 2 0 +142 1 0 131 0 0 131 20 10 176 59 34 198 112 92 192 80 59 +39 3 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 176 59 34 +203 99 81 166 21 8 140 1 0 131 0 0 140 1 0 144 9 4 +166 21 8 174 34 14 185 36 13 192 80 59 238 198 189 253 252 251 +253 252 250 253 253 252 253 253 252 254 253 250 253 252 251 254 252 249 +251 245 237 252 243 235 251 245 237 251 245 237 253 249 244 253 249 244 +253 249 244 253 249 244 253 249 244 253 249 244 253 249 244 253 249 244 +251 245 237 252 243 235 252 243 235 252 240 230 252 240 230 252 240 230 +252 240 230 252 240 230 252 240 230 252 243 235 252 243 235 252 243 235 +251 245 237 251 245 237 251 245 237 251 245 237 251 245 237 251 245 237 +251 245 237 251 245 237 251 245 237 251 245 237 251 245 237 251 245 237 +251 245 237 251 245 237 252 243 235 252 243 235 252 243 235 251 245 237 +246 228 219 210 136 114 214 127 110 206 120 99 237 182 145 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 254 254 253 254 254 253 +253 249 244 252 243 235 252 240 230 250 233 221 248 226 214 245 214 205 +243 208 194 241 196 185 236 173 149 213 78 31 210 31 6 196 0 0 +196 0 0 192 0 0 179 7 2 172 5 1 159 3 1 150 0 0 +140 1 0 131 0 0 153 32 16 188 95 83 214 127 110 153 32 16 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 90 10 7 +203 102 83 184 62 32 149 3 1 131 0 0 141 11 5 147 19 9 +166 21 8 174 34 14 176 59 34 236 194 173 253 249 244 253 249 244 +253 253 252 254 253 250 254 253 250 253 253 252 254 252 249 252 243 235 +252 242 234 252 243 235 251 245 237 251 245 237 253 249 244 253 249 244 +253 249 244 253 249 244 253 249 244 253 249 244 253 249 244 252 243 235 +252 242 234 252 242 234 251 240 231 251 238 227 251 238 227 251 238 227 +251 238 227 251 238 227 251 238 227 252 242 234 252 242 234 252 242 234 +252 242 234 252 242 234 252 242 234 252 242 234 252 242 234 252 242 234 +252 242 234 252 242 234 252 242 234 251 240 231 251 240 231 250 239 228 +250 239 228 251 238 227 251 238 227 251 238 227 251 238 227 251 238 227 +250 239 228 237 187 164 210 136 114 221 143 118 227 164 124 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 254 254 253 254 252 249 +253 249 240 252 242 234 251 238 227 249 231 218 247 223 207 245 214 205 +241 196 185 221 154 132 213 78 31 210 31 6 196 0 0 196 0 0 +196 0 0 184 9 3 172 5 1 163 1 0 153 2 0 142 1 0 +131 0 0 136 24 13 177 84 68 214 127 110 203 99 81 86 4 2 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 +177 84 68 203 102 83 174 34 14 140 1 0 141 11 5 147 19 9 +153 32 16 174 34 14 221 154 132 253 249 244 251 245 237 253 252 251 +254 254 253 254 253 250 254 254 253 253 249 244 252 242 234 251 240 231 +252 243 235 251 245 237 251 245 237 251 245 237 251 245 237 251 245 237 +252 246 236 253 249 244 251 245 237 251 245 237 252 243 235 252 242 234 +252 242 234 249 237 229 251 238 227 251 236 222 251 236 222 251 236 222 +251 236 222 251 236 222 251 238 227 249 237 229 249 237 229 249 237 229 +249 237 229 249 237 229 249 237 229 249 237 229 249 237 229 249 237 229 +249 237 229 251 238 227 251 236 222 251 236 222 251 236 222 251 236 222 +251 236 222 251 236 222 251 236 222 251 236 222 251 236 222 251 236 222 +251 238 227 243 220 211 221 154 132 221 154 132 221 143 118 251 238 227 +255 255 255 255 255 255 255 255 255 254 254 253 254 252 249 253 249 244 +251 245 237 252 240 230 250 233 221 248 226 214 247 223 207 241 196 185 +221 143 118 209 61 24 210 31 6 210 31 6 196 0 0 196 0 0 +184 9 3 179 7 2 167 2 1 159 3 1 149 3 1 131 0 0 +131 20 10 176 59 34 198 112 92 221 154 132 174 34 14 2 2 2 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +111 7 4 214 127 110 192 80 59 156 16 7 141 11 5 136 24 13 +153 32 16 198 112 92 249 237 229 251 242 233 253 249 244 254 254 253 +254 253 250 254 253 250 253 249 244 251 240 231 251 240 231 252 242 234 +252 243 235 251 245 237 251 245 237 251 245 237 251 245 237 253 248 237 +252 246 236 251 245 237 251 245 237 252 243 235 252 242 234 251 240 231 +249 237 229 249 237 229 250 233 221 250 235 219 250 235 219 250 235 219 +250 235 219 250 235 219 250 233 221 249 237 229 249 237 229 249 237 229 +249 237 229 249 237 229 249 237 229 249 237 229 250 233 221 249 231 218 +250 235 219 250 235 219 250 235 219 250 235 219 250 235 219 250 235 219 +250 235 219 250 235 219 250 235 219 250 235 219 250 235 219 250 233 221 +249 237 229 249 237 229 238 198 189 237 187 164 231 168 130 241 190 156 +255 255 255 255 255 255 255 255 255 254 252 249 253 249 244 253 249 244 +252 243 235 252 240 230 250 233 221 243 208 194 236 173 149 203 99 81 +213 49 12 210 31 6 210 31 6 196 0 0 196 0 0 192 0 0 +183 2 0 172 5 1 163 1 0 153 2 0 141 0 0 131 0 0 +153 32 16 188 95 83 213 149 125 206 120 99 86 4 2 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +39 3 2 203 99 81 214 127 110 176 59 34 147 19 9 136 24 13 +177 84 68 243 220 211 249 237 229 251 245 237 253 253 252 254 253 250 +254 253 250 253 251 245 249 237 229 249 237 229 251 240 231 252 242 234 +252 243 235 251 245 237 251 245 237 251 245 237 253 249 244 253 248 237 +252 244 235 252 246 236 252 243 235 252 242 234 249 237 229 249 237 229 +249 237 229 249 237 229 249 231 218 248 226 214 248 226 214 248 226 214 +248 226 214 248 226 214 250 233 221 250 233 221 250 233 221 250 233 221 +246 228 219 250 233 221 249 231 218 248 226 214 248 226 214 248 226 214 +248 226 214 248 226 214 248 226 214 248 226 214 248 226 214 248 226 214 +248 226 214 248 226 214 248 226 214 246 228 219 246 228 219 246 228 219 +246 228 219 246 228 219 246 228 219 238 198 189 238 198 189 231 168 130 +252 240 230 253 249 244 253 249 240 253 251 245 253 249 244 252 242 234 +248 226 214 242 201 184 239 175 143 214 127 110 213 78 31 209 61 24 +213 43 8 210 31 6 210 31 6 196 0 0 196 0 0 184 9 3 +176 6 2 167 2 1 159 3 1 145 0 0 131 0 0 136 24 13 +177 84 68 202 130 106 236 173 149 176 59 34 2 2 2 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 131 20 10 221 143 118 203 99 81 153 32 16 153 32 16 +222 184 158 252 242 234 249 237 229 253 252 250 254 254 253 254 253 250 +254 252 249 249 237 229 250 233 221 249 237 229 251 240 231 252 242 234 +252 243 235 251 245 237 253 249 244 253 249 244 253 249 240 253 248 237 +252 246 236 252 244 235 252 242 234 251 240 231 249 237 229 249 237 229 +249 237 229 246 228 219 246 228 219 248 226 214 247 223 207 247 223 207 +247 223 207 247 223 207 246 228 219 246 228 219 246 228 219 246 228 219 +248 226 214 247 223 207 247 223 207 247 223 207 247 223 207 247 223 207 +247 223 207 247 223 207 247 223 207 247 223 207 247 223 207 247 223 207 +247 223 207 248 226 214 246 228 219 246 228 219 246 228 219 246 228 219 +246 228 219 246 228 219 246 228 219 237 212 203 222 184 158 206 120 99 +239 175 143 248 226 214 243 208 194 242 201 184 237 187 164 236 173 149 +231 168 130 221 143 118 203 102 83 213 78 31 213 78 31 213 49 12 +210 31 6 210 31 6 196 0 0 196 0 0 184 9 3 179 7 2 +172 5 1 163 1 0 150 0 0 140 1 0 131 20 10 176 59 34 +198 112 92 218 160 133 214 127 110 97 5 3 1 1 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +1 1 1 2 2 2 198 112 92 221 143 118 192 80 59 213 149 125 +251 242 233 246 228 219 251 245 237 254 254 253 253 253 252 253 253 252 +251 240 231 249 231 218 251 236 222 252 240 230 252 242 234 252 243 235 +251 245 237 253 249 244 253 249 244 253 249 244 253 249 240 253 248 237 +252 246 236 251 242 233 251 240 231 249 237 229 249 237 229 250 233 221 +246 228 219 246 228 219 248 226 214 248 226 214 247 223 207 247 223 207 +247 223 207 247 223 207 248 226 214 248 226 214 247 223 207 247 223 207 +247 223 207 247 223 207 247 223 207 247 223 207 247 223 207 247 223 207 +247 223 207 247 223 207 247 223 207 247 223 207 243 210 197 247 223 207 +243 220 211 243 220 211 243 220 211 243 220 211 243 220 211 243 220 211 +243 220 211 243 220 211 243 220 211 237 212 203 188 95 83 174 34 14 +213 78 31 242 201 184 242 201 184 241 190 156 239 175 143 231 168 130 +221 143 118 214 127 110 203 99 81 213 78 31 213 49 12 210 31 6 +210 31 6 196 0 0 196 0 0 192 0 0 183 2 0 172 5 1 +167 2 1 153 2 0 141 0 0 141 11 5 153 32 16 188 95 83 +213 149 125 237 187 164 176 59 34 2 2 2 2 2 2 1 1 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 +2 2 2 2 2 2 136 24 13 221 154 132 213 149 125 246 228 219 +246 228 219 246 228 219 253 252 250 254 254 253 254 254 253 252 243 235 +248 226 214 250 233 221 251 238 227 251 240 231 252 242 234 252 243 235 +251 245 237 253 249 244 254 252 249 254 252 249 253 250 244 253 249 240 +252 246 236 252 240 230 251 240 231 249 237 229 249 237 229 246 228 219 +246 228 219 248 226 214 243 220 211 243 220 211 245 214 205 243 210 197 +243 210 197 244 218 207 243 220 211 245 214 205 243 210 197 243 208 194 +243 210 197 243 208 194 243 208 194 243 208 194 243 208 194 243 208 194 +243 208 194 243 208 194 243 208 194 243 208 194 243 210 197 245 214 205 +243 220 211 245 214 205 245 214 205 245 214 205 243 216 205 243 216 205 +243 216 205 243 220 211 243 216 205 243 220 211 222 184 158 177 84 68 +193 53 28 206 120 99 237 187 164 239 175 143 231 168 130 221 143 118 +214 127 110 203 99 81 213 78 31 209 61 24 213 43 8 210 31 6 +196 0 0 196 0 0 196 0 0 184 9 3 179 7 2 167 2 1 +159 3 1 145 0 0 131 0 0 142 30 13 177 84 68 202 130 106 +222 184 158 214 127 110 86 4 2 2 2 2 2 2 2 1 1 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 +2 2 2 2 2 2 38 6 5 188 95 83 237 212 203 249 237 229 +243 220 211 252 243 235 254 254 253 254 254 253 253 249 244 248 226 214 +248 226 214 250 233 221 249 237 229 251 240 231 252 243 235 251 245 237 +253 249 244 253 252 251 254 254 253 255 255 255 254 254 253 253 250 244 +252 244 235 251 238 227 249 237 229 249 237 229 246 228 219 246 228 219 +248 226 214 245 214 205 245 214 205 245 214 205 245 214 205 245 214 205 +245 214 205 243 210 197 243 208 194 242 201 184 242 201 184 242 201 184 +242 201 184 242 201 184 242 201 184 242 201 184 242 201 184 242 201 184 +242 201 184 242 201 184 242 201 184 243 208 194 237 212 203 237 212 203 +237 212 203 237 212 203 237 212 203 237 212 203 237 212 203 237 212 203 +237 212 203 237 212 203 237 212 203 237 212 203 237 212 203 213 149 125 +176 59 34 196 46 20 221 143 118 239 175 143 221 143 118 214 127 110 +203 102 83 213 78 31 213 78 31 213 49 12 210 31 6 210 31 6 +196 0 0 196 0 0 184 9 3 179 7 2 172 5 1 159 3 1 +147 0 0 140 1 0 136 24 13 176 59 34 183 106 85 221 154 132 +237 187 164 174 34 14 38 6 5 2 2 2 2 2 2 2 2 2 +1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 2 2 2 +2 2 2 2 2 2 2 2 2 177 84 68 251 245 237 243 220 211 +246 228 219 253 253 252 254 254 253 254 252 249 248 226 214 247 223 207 +249 231 218 250 233 221 249 237 229 251 240 231 252 243 235 253 249 244 +253 253 252 255 255 255 255 255 255 255 255 255 255 255 255 253 251 245 +252 244 235 251 236 222 250 233 221 250 233 221 246 228 219 243 220 211 +245 214 205 245 214 205 245 214 205 245 214 205 245 214 205 243 210 197 +242 201 184 242 201 184 242 201 184 242 201 184 242 201 184 242 201 184 +242 201 184 242 201 184 242 201 184 242 201 184 236 194 173 236 194 173 +236 194 173 236 194 173 241 196 185 238 198 189 238 198 189 238 198 189 +238 198 189 238 198 189 238 198 189 238 198 189 238 198 189 238 198 189 +238 198 189 241 205 194 238 198 189 238 198 189 238 198 189 238 198 189 +198 112 92 176 59 34 209 61 24 221 143 118 221 143 118 214 127 110 +203 99 81 213 78 31 213 49 12 210 31 6 210 31 6 196 0 0 +196 0 0 192 0 0 184 9 3 172 5 1 163 1 0 150 0 0 +141 0 0 141 11 5 153 32 16 188 95 83 213 149 125 241 196 185 +214 127 110 142 30 13 2 2 2 2 2 2 2 2 2 2 2 2 +1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 2 2 2 +2 2 2 2 2 2 44 12 10 222 184 158 249 237 229 237 212 203 +252 242 234 255 255 255 254 254 253 251 238 227 245 214 205 247 223 207 +249 231 218 250 233 221 252 240 230 252 242 234 253 249 244 253 252 251 +255 255 255 255 255 255 255 255 255 255 255 255 254 254 253 253 249 244 +252 240 230 250 235 219 249 231 218 246 228 219 248 226 214 245 214 205 +245 214 205 241 205 194 241 205 194 241 205 194 242 201 184 242 201 184 +236 194 173 236 194 173 236 194 173 241 190 156 241 190 156 241 190 156 +241 190 156 241 190 156 241 190 156 241 190 156 241 190 156 241 190 156 +241 190 156 241 196 185 241 196 185 241 196 185 241 196 185 241 196 185 +241 196 185 241 196 185 241 196 185 241 196 185 241 196 185 238 198 189 +238 198 189 238 198 189 238 198 189 238 198 189 238 198 189 238 198 189 +222 184 158 183 106 85 176 59 34 213 49 12 203 99 81 203 99 81 +213 78 31 209 61 24 210 31 6 210 31 6 196 0 0 196 0 0 +196 0 0 183 2 0 172 5 1 163 1 0 150 0 0 142 0 0 +131 0 0 142 30 13 177 84 68 202 130 106 222 184 158 233 177 153 +203 99 81 222 184 158 44 12 10 2 2 2 2 2 2 2 2 2 +1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 2 2 2 +2 2 2 2 2 2 183 106 85 253 249 244 243 220 211 243 216 205 +253 252 250 255 255 255 253 249 244 243 210 197 245 214 205 248 226 214 +249 231 218 250 233 221 251 238 227 252 243 235 253 251 245 254 254 253 +255 255 255 255 255 255 255 255 255 255 255 255 253 255 254 253 248 237 +251 236 222 249 231 218 248 226 214 243 220 211 245 214 205 245 214 205 +241 205 194 241 196 185 241 196 185 241 196 185 241 190 156 241 190 156 +241 190 156 241 190 156 241 190 156 241 190 156 241 190 156 241 190 156 +241 190 156 241 190 156 241 190 156 241 190 156 241 190 156 241 190 156 +237 187 164 237 187 164 237 187 164 237 187 164 237 187 164 237 187 164 +237 187 164 237 187 164 237 187 164 237 187 164 237 187 164 236 194 173 +236 194 173 236 194 173 236 194 173 236 194 173 236 194 173 222 184 158 +222 184 158 222 184 158 177 84 68 176 59 34 213 49 12 213 78 31 +213 78 31 213 43 8 210 31 6 196 0 0 196 0 0 192 0 0 +183 2 0 172 5 1 163 1 0 153 0 0 145 0 0 140 1 0 +136 24 13 176 59 34 198 112 92 221 154 132 238 198 189 203 99 81 +222 184 158 237 212 203 183 106 85 2 2 2 2 2 2 2 2 2 +2 2 2 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 2 2 2 +2 2 2 44 12 10 238 198 189 252 242 234 241 205 194 246 228 219 +254 254 253 254 254 253 247 223 207 243 208 194 245 214 205 247 223 207 +248 226 214 250 233 221 251 238 227 251 245 237 253 252 251 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 254 252 249 252 240 230 +249 231 218 247 223 207 247 223 207 245 214 205 243 210 197 241 205 194 +241 196 185 241 196 185 237 187 164 241 190 156 241 190 156 241 190 156 +241 190 156 239 175 143 239 175 143 239 175 143 239 175 143 239 175 143 +239 175 143 239 175 143 239 175 143 227 164 124 221 143 118 221 143 118 +214 127 110 214 127 110 206 120 99 203 99 81 203 99 81 203 99 81 +203 99 81 203 99 81 203 99 81 198 112 92 206 120 99 214 127 110 +213 149 125 221 154 132 218 160 133 222 184 158 222 184 158 222 184 158 +222 184 158 222 184 158 218 160 133 177 84 68 176 59 34 210 31 6 +213 43 8 210 31 6 196 0 0 196 0 0 189 0 0 181 0 0 +172 0 0 163 1 0 155 0 0 146 0 0 140 1 0 141 11 5 +153 32 16 188 95 83 213 149 125 238 198 189 221 154 132 198 112 92 +240 219 206 240 219 206 222 184 158 44 12 10 2 2 2 2 2 2 +2 2 2 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 2 2 2 +2 2 2 177 84 68 251 242 233 243 220 211 241 205 194 251 245 237 +255 255 255 251 240 231 242 201 184 243 208 194 245 214 205 247 223 207 +248 226 214 250 233 221 251 238 227 251 245 237 253 253 252 255 255 255 +255 255 255 255 255 255 255 255 255 254 253 250 252 244 235 250 235 219 +247 223 207 247 223 207 243 210 197 243 210 197 241 196 185 241 196 185 +241 196 185 241 190 156 237 182 145 239 175 143 239 175 143 239 175 143 +239 175 143 239 175 143 239 175 143 239 175 143 239 175 143 221 143 118 +214 127 110 203 99 81 213 78 31 213 78 31 209 61 24 204 76 38 +204 76 38 204 76 38 204 76 38 204 76 38 204 76 38 204 76 38 +193 53 28 193 53 28 193 53 28 184 62 32 192 80 59 184 62 32 +192 80 59 192 80 59 191 90 72 188 95 83 206 120 99 213 149 125 +218 160 133 218 160 133 218 160 133 213 149 125 177 84 68 176 59 34 +195 25 6 196 0 0 196 0 0 189 0 0 183 2 0 174 0 0 +165 0 0 157 0 0 147 0 0 140 1 0 131 0 0 142 30 13 +177 84 68 202 130 106 222 184 158 241 196 185 192 80 59 218 160 133 +237 212 203 240 219 206 237 212 203 177 84 68 2 2 2 2 2 2 +2 2 2 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 1 1 1 2 2 2 2 2 2 +38 6 5 222 184 158 251 245 237 238 198 189 237 212 203 254 254 253 +253 252 251 243 208 194 236 194 173 243 208 194 243 210 197 247 223 207 +248 226 214 250 233 221 252 240 230 251 245 237 254 252 249 254 254 253 +255 255 255 254 254 253 254 252 249 252 246 236 250 235 219 247 223 207 +247 223 207 243 208 194 242 201 184 241 196 185 241 196 185 237 187 164 +239 175 143 239 175 143 239 175 143 239 175 143 239 175 143 239 175 143 +239 175 143 227 164 124 221 143 118 203 102 83 213 78 31 213 49 12 +213 49 12 213 43 8 213 43 8 213 49 12 209 61 24 209 61 24 +209 61 24 193 53 28 193 53 28 193 53 28 193 53 28 193 53 28 +193 53 28 193 53 28 193 53 28 193 53 28 193 53 28 193 53 28 +176 59 34 176 59 34 176 59 34 176 59 34 176 59 34 177 84 68 +177 84 68 198 112 92 210 136 114 213 149 125 210 136 114 177 84 68 +176 59 34 180 23 7 192 0 0 183 2 0 174 0 0 167 2 1 +158 0 0 150 0 0 141 0 0 131 0 0 136 24 13 177 84 68 +198 112 92 218 160 133 237 212 203 203 102 83 176 59 34 218 160 133 +238 198 189 237 212 203 240 219 206 222 184 158 44 12 10 2 2 2 +2 2 2 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 1 1 1 2 2 2 0 0 0 +44 12 10 249 237 229 246 228 219 238 198 189 246 228 219 255 255 255 +249 237 229 237 187 164 236 194 173 242 201 184 243 210 197 247 223 207 +248 226 214 250 233 221 252 240 230 252 243 235 253 249 244 254 252 249 +254 252 249 253 249 244 252 240 230 250 235 219 247 223 207 243 210 197 +243 208 194 242 201 184 241 196 185 241 196 185 237 187 164 239 175 143 +231 168 130 231 168 130 231 168 130 231 168 130 231 168 130 221 143 118 +203 99 81 213 78 31 213 49 12 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 205 44 13 203 40 12 +203 40 12 203 40 12 202 38 11 202 38 11 193 28 10 193 28 10 +193 28 10 193 28 10 185 36 13 185 36 13 185 36 13 185 36 13 +174 34 14 174 34 14 174 34 14 176 59 34 176 59 34 176 59 34 +176 59 34 176 59 34 176 59 34 177 84 68 183 106 85 202 130 106 +177 84 68 176 59 34 153 32 16 172 5 1 169 0 0 158 0 0 +150 0 0 142 0 0 131 0 0 131 20 10 176 59 34 188 95 83 +213 149 125 238 198 189 221 154 132 174 34 14 177 84 68 202 130 106 +222 184 158 237 212 203 243 220 211 237 212 203 90 10 7 0 0 0 +2 2 2 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 1 1 1 2 2 2 0 0 0 +202 130 106 253 253 252 241 205 194 238 198 189 251 245 237 254 254 253 +242 201 184 233 177 153 236 194 173 242 201 184 243 208 194 247 223 207 +249 231 218 251 238 227 252 240 230 252 242 234 252 244 235 253 248 237 +252 244 235 251 238 227 250 235 219 247 223 207 243 208 194 242 201 184 +242 201 184 241 190 156 237 187 164 236 173 149 239 175 143 231 168 130 +231 168 130 231 168 130 221 143 118 214 127 110 213 78 31 213 49 12 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 195 25 6 195 25 6 195 25 6 193 28 10 +193 28 10 191 24 6 191 24 6 180 23 7 182 27 9 182 27 9 +182 27 9 174 34 14 174 34 14 174 34 14 174 34 14 174 34 14 +174 34 14 176 59 34 176 59 34 176 59 34 176 59 34 177 84 68 +183 106 85 183 106 85 177 84 68 153 32 16 147 19 9 150 0 0 +143 0 0 131 0 0 124 2 0 153 32 16 177 84 68 210 136 114 +237 187 164 221 154 132 196 46 20 177 84 68 177 84 68 183 106 85 +218 160 133 222 184 158 240 219 206 240 219 206 202 130 106 2 2 2 +2 2 2 2 2 2 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 1 1 1 2 2 2 38 6 5 +237 212 203 252 243 235 238 198 189 241 205 194 253 253 252 249 237 229 +236 173 149 236 173 149 237 187 164 242 201 184 243 208 194 247 223 207 +249 231 218 251 238 227 252 240 230 252 240 230 252 240 230 252 240 230 +251 236 222 250 235 219 247 223 207 243 208 194 242 201 184 241 190 156 +241 190 156 239 175 143 236 173 149 231 168 130 227 164 124 227 164 124 +221 143 118 203 102 83 213 78 31 213 49 12 213 43 8 213 43 8 +213 43 8 213 43 8 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +196 0 0 196 0 0 196 0 0 196 0 0 184 9 3 184 9 3 +184 9 3 184 9 3 184 9 3 184 9 3 184 9 3 175 12 4 +173 17 6 173 17 6 173 17 6 166 21 8 168 26 11 168 26 11 +153 32 16 153 32 16 153 32 16 153 32 16 153 32 16 153 32 16 +153 32 16 177 84 68 177 84 68 177 84 68 176 59 34 142 30 13 +131 20 10 124 2 0 124 2 0 153 32 16 176 59 34 203 99 81 +203 99 81 195 25 6 153 32 16 177 84 68 177 84 68 183 106 85 +213 149 125 222 184 158 237 212 203 240 219 206 222 184 158 44 12 10 +0 0 0 2 2 2 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 44 12 10 +249 237 229 243 220 211 237 187 164 243 220 211 254 255 253 242 201 184 +231 168 130 236 173 149 237 187 164 241 196 185 243 210 197 247 223 207 +249 231 218 251 238 227 252 240 230 252 240 230 252 240 230 251 238 227 +250 235 219 247 223 207 247 223 207 242 201 184 241 190 156 237 182 145 +239 175 143 231 168 130 227 164 124 221 143 118 221 143 118 203 102 83 +213 78 31 213 49 12 213 43 8 213 43 8 213 43 8 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 192 0 0 +184 9 3 184 9 3 184 9 3 179 7 2 179 7 2 176 6 2 +174 10 3 174 10 3 168 14 5 168 14 5 164 15 5 164 15 5 +156 16 7 156 16 7 153 32 16 153 32 16 153 32 16 153 32 16 +153 32 16 153 32 16 153 32 16 177 84 68 177 84 68 177 84 68 +142 30 13 136 24 13 131 20 10 144 9 4 159 3 1 176 6 2 +175 12 4 142 30 13 177 84 68 177 84 68 177 84 68 177 84 68 +202 130 106 218 160 133 238 198 189 243 220 211 237 212 203 177 84 68 +0 0 0 2 2 2 1 1 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 183 106 85 +254 254 253 238 198 189 236 194 173 246 228 219 253 249 244 239 175 143 +231 168 130 239 175 143 233 177 153 242 201 184 243 210 197 248 226 214 +250 235 219 251 238 227 252 244 235 252 246 236 252 240 230 251 236 222 +249 231 218 247 223 207 243 208 194 241 190 156 239 175 143 231 168 130 +227 164 124 221 143 118 221 143 118 214 127 110 213 78 31 213 49 12 +213 43 8 213 43 8 213 43 8 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 192 0 0 +188 0 0 183 2 0 183 2 0 179 0 0 176 6 2 172 5 1 +172 5 1 167 2 1 167 2 1 167 2 1 159 3 1 159 13 5 +159 13 5 156 16 7 156 16 7 147 19 9 147 19 9 142 30 13 +142 30 13 142 30 13 142 30 13 142 30 13 142 30 13 177 84 68 +177 84 68 177 84 68 142 30 13 142 30 13 142 30 13 136 24 13 +136 24 13 142 30 13 142 30 13 177 84 68 177 84 68 183 106 85 +183 106 85 213 149 125 222 184 158 237 212 203 237 212 203 202 130 106 +0 0 0 2 2 2 1 1 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 38 6 5 222 184 158 +253 249 244 236 194 173 236 194 173 251 245 237 244 218 207 221 143 118 +227 164 124 231 168 130 233 177 153 241 196 185 243 210 197 247 223 207 +251 236 222 253 249 240 253 252 251 254 252 249 251 242 233 250 235 219 +247 223 207 243 208 194 241 190 156 239 175 143 231 168 130 221 143 118 +221 143 118 214 127 110 213 78 31 213 49 12 213 43 8 213 43 8 +213 43 8 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 192 0 0 189 0 0 +186 0 0 184 0 0 181 0 0 178 0 0 175 0 0 173 0 0 +170 0 0 167 2 1 167 2 1 163 1 0 159 3 1 159 3 1 +157 8 2 157 8 2 144 9 4 144 9 4 147 19 9 147 19 9 +136 24 13 136 24 13 136 24 13 136 24 13 136 24 13 136 24 13 +176 59 34 177 84 68 177 84 68 142 30 13 142 30 13 136 24 13 +136 24 13 136 24 13 142 30 13 177 84 68 177 84 68 177 84 68 +183 106 85 202 130 106 218 160 133 237 212 203 240 219 206 222 184 158 +44 12 10 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 44 12 10 249 237 229 +249 237 229 222 184 158 236 194 173 253 253 252 236 173 149 221 143 118 +221 143 118 231 168 130 233 177 153 242 201 184 243 208 194 247 223 207 +252 244 235 254 254 253 255 255 255 255 255 255 252 244 235 248 226 214 +243 210 197 242 201 184 241 190 156 227 164 124 221 143 118 214 127 110 +203 102 83 213 78 31 213 43 8 213 43 8 213 43 8 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 192 0 0 189 0 0 +186 0 0 184 0 0 179 0 0 177 0 0 174 0 0 172 0 0 +169 0 0 166 0 0 164 0 0 160 0 0 159 0 0 157 0 0 +155 2 1 149 3 1 149 3 1 144 9 4 144 9 4 141 11 5 +141 11 5 136 24 13 136 24 13 136 24 13 136 24 13 136 24 13 +136 24 13 142 30 13 177 84 68 177 84 68 177 84 68 177 84 68 +142 30 13 142 30 13 177 84 68 177 84 68 177 84 68 177 84 68 +177 84 68 183 106 85 213 149 125 238 198 189 243 220 211 238 198 189 +44 12 10 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 177 84 68 253 252 251 +243 220 211 233 177 153 238 198 189 251 240 231 221 143 118 221 143 118 +221 143 118 227 164 124 237 182 145 241 190 156 243 208 194 250 235 219 +254 252 249 255 255 255 255 255 255 254 254 253 252 240 230 247 223 207 +242 201 184 241 190 156 231 168 130 214 127 110 206 120 99 213 78 31 +213 49 12 213 43 8 213 43 8 213 43 8 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 192 0 0 192 0 0 188 0 0 +186 0 0 181 0 0 179 0 0 176 0 0 174 0 0 171 0 0 +169 0 0 165 0 0 163 0 0 160 0 0 158 0 0 155 0 0 +153 0 0 150 0 0 149 3 1 145 0 0 144 9 4 144 9 4 +141 11 5 141 11 5 131 20 10 131 20 10 131 20 10 131 20 10 +136 24 13 131 20 10 136 24 13 177 84 68 177 84 68 177 84 68 +177 84 68 177 84 68 177 84 68 177 84 68 177 84 68 177 84 68 +177 84 68 177 84 68 213 149 125 222 184 158 240 219 206 237 212 203 +183 106 85 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 202 130 106 255 255 255 +238 198 189 233 177 153 237 212 203 241 196 185 206 120 99 214 127 110 +221 143 118 227 164 124 234 180 140 241 190 156 243 208 194 251 238 227 +254 254 253 255 255 255 255 255 255 254 253 250 249 231 218 243 208 194 +241 190 156 234 180 140 227 164 124 203 99 81 213 78 31 213 43 8 +213 43 8 213 43 8 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 192 0 0 189 0 0 186 0 0 +184 0 0 181 0 0 179 0 0 176 0 0 173 0 0 170 0 0 +167 0 0 165 0 0 162 0 0 160 0 0 157 0 0 153 0 0 +152 0 0 150 0 0 147 0 0 145 0 0 142 1 0 140 1 0 +140 1 0 141 11 5 141 11 5 131 20 10 131 20 10 131 20 10 +131 20 10 131 20 10 131 20 10 131 20 10 136 24 13 177 84 68 +177 84 68 177 84 68 177 84 68 177 84 68 177 84 68 177 84 68 +177 84 68 176 59 34 202 130 106 218 160 133 243 220 211 243 220 211 +202 130 106 2 2 2 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 2 2 2 222 184 158 255 255 255 +236 194 173 218 160 133 243 220 211 221 154 132 203 99 81 214 127 110 +221 143 118 227 164 124 234 180 140 241 190 156 243 208 194 251 238 227 +255 255 255 255 255 255 255 255 255 252 242 234 243 210 197 241 190 156 +237 182 145 227 164 124 203 102 83 213 49 12 213 43 8 213 43 8 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 192 0 0 189 0 0 186 0 0 +184 0 0 179 0 0 178 0 0 175 0 0 172 0 0 169 0 0 +166 0 0 164 0 0 160 0 0 159 0 0 157 0 0 153 0 0 +150 0 0 147 0 0 145 0 0 143 0 0 141 0 0 140 1 0 +131 0 0 131 0 0 131 0 0 124 2 0 124 2 0 131 20 10 +131 20 10 131 20 10 131 20 10 111 7 4 90 10 7 136 24 13 +177 84 68 177 84 68 177 84 68 177 84 68 177 84 68 177 84 68 +177 84 68 176 59 34 198 112 92 218 160 133 237 212 203 246 228 219 +222 184 158 44 12 10 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 44 12 10 237 212 203 253 253 252 +222 184 158 218 160 133 237 212 203 206 120 99 203 99 81 206 120 99 +221 143 118 227 164 124 234 180 140 241 190 156 242 201 184 249 231 218 +253 251 245 253 253 252 251 245 237 247 223 207 242 201 184 237 182 145 +227 164 124 203 102 83 213 78 31 213 43 8 213 43 8 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 192 0 0 189 0 0 186 0 0 186 0 0 +181 0 0 179 0 0 176 0 0 174 0 0 171 0 0 169 0 0 +166 0 0 163 0 0 160 0 0 158 0 0 157 0 0 153 0 0 +150 0 0 147 0 0 145 0 0 142 0 0 140 1 0 140 1 0 +131 0 0 131 0 0 131 0 0 124 2 0 124 2 0 124 2 0 +111 7 4 111 7 4 111 7 4 111 7 4 90 10 7 90 10 7 +90 10 7 142 30 13 142 30 13 142 30 13 142 30 13 142 30 13 +176 59 34 153 32 16 183 106 85 213 149 125 238 198 189 249 237 229 +238 198 189 44 12 10 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 44 12 10 246 228 219 251 245 237 +222 184 158 218 160 133 241 205 194 213 78 31 203 99 81 206 120 99 +206 120 99 227 164 124 231 168 130 241 190 156 242 201 184 243 210 197 +249 231 218 249 231 218 243 210 197 242 201 184 241 190 156 227 164 124 +206 120 99 213 78 31 213 78 31 213 43 8 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 192 0 0 189 0 0 186 0 0 184 0 0 +181 0 0 178 0 0 175 0 0 173 0 0 170 0 0 167 0 0 +165 0 0 162 0 0 159 0 0 158 0 0 155 0 0 152 0 0 +150 0 0 146 0 0 145 0 0 142 0 0 140 1 0 140 1 0 +131 0 0 131 0 0 131 0 0 124 2 0 124 2 0 124 2 0 +111 7 4 111 7 4 111 7 4 111 7 4 90 10 7 90 10 7 +90 10 7 90 10 7 136 24 13 142 30 13 142 30 13 142 30 13 +142 30 13 142 30 13 192 80 59 213 149 125 236 194 173 251 245 237 +237 212 203 44 12 10 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 177 84 68 253 249 244 249 237 229 +218 160 133 218 160 133 236 194 173 204 51 17 213 78 31 203 102 83 +206 120 99 227 164 124 231 168 130 237 182 145 241 190 156 242 201 184 +242 201 184 242 201 184 241 190 156 237 182 145 227 164 124 206 120 99 +213 78 31 213 78 31 213 78 31 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 192 0 0 189 0 0 186 0 0 184 0 0 181 0 0 +179 0 0 177 0 0 174 0 0 171 0 0 169 0 0 166 0 0 +164 0 0 160 0 0 159 0 0 157 0 0 153 0 0 150 0 0 +147 0 0 146 0 0 143 0 0 141 0 0 140 1 0 131 0 0 +131 0 0 131 0 0 131 0 0 124 2 0 124 2 0 117 1 0 +117 1 0 111 7 4 111 7 4 111 7 4 97 5 3 90 10 7 +90 10 7 90 10 7 90 10 7 136 24 13 136 24 13 142 30 13 +136 24 13 131 20 10 184 62 32 213 149 125 222 184 158 253 249 244 +237 212 203 177 84 68 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 183 106 85 255 255 255 246 228 219 +218 160 133 218 160 133 221 154 132 205 44 13 213 78 31 213 78 31 +203 102 83 221 143 118 227 164 124 231 168 130 237 182 145 241 190 156 +241 190 156 241 190 156 239 175 143 227 164 124 206 120 99 213 78 31 +213 78 31 213 78 31 213 78 31 210 31 6 210 31 6 210 31 6 +210 31 6 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +192 0 0 192 0 0 188 0 0 186 0 0 184 0 0 181 0 0 +178 0 0 176 0 0 173 0 0 170 0 0 169 0 0 165 0 0 +163 0 0 160 0 0 157 0 0 155 0 0 153 0 0 150 0 0 +147 0 0 145 0 0 142 0 0 140 1 0 140 1 0 131 0 0 +131 0 0 131 0 0 124 2 0 124 2 0 124 2 0 117 1 0 +117 1 0 111 7 4 111 7 4 111 7 4 111 7 4 97 5 3 +90 10 7 90 10 7 90 10 7 90 10 7 111 7 4 131 20 10 +111 7 4 124 2 0 176 59 34 202 130 106 222 184 158 253 249 244 +237 212 203 183 106 85 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 1 1 1 183 106 85 255 255 255 237 212 203 +213 149 125 222 184 158 206 120 99 206 42 10 213 78 31 213 78 31 +213 78 31 206 120 99 221 143 118 227 164 124 231 168 130 239 175 143 +239 175 143 227 164 124 221 143 118 203 102 83 213 78 31 213 78 31 +213 78 31 213 49 12 213 49 12 210 31 6 210 31 6 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +192 0 0 189 0 0 186 0 0 184 0 0 181 0 0 179 0 0 +177 0 0 175 0 0 172 0 0 170 0 0 167 0 0 164 0 0 +162 0 0 159 0 0 157 0 0 155 0 0 150 0 0 150 0 0 +147 0 0 145 0 0 141 0 0 140 1 0 140 1 0 131 0 0 +131 0 0 131 0 0 124 2 0 124 2 0 124 2 0 117 1 0 +117 1 0 111 7 4 117 1 0 140 1 0 124 2 0 97 5 3 +97 5 3 97 5 3 97 5 3 97 5 3 97 5 3 111 7 4 +111 7 4 124 2 0 176 59 34 202 130 106 238 198 189 253 251 245 +237 212 203 202 130 106 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 2 2 2 202 130 106 255 255 255 237 212 203 +213 149 125 218 160 133 192 80 59 213 43 8 213 49 12 213 78 31 +213 78 31 203 99 81 206 120 99 221 143 118 221 143 118 221 143 118 +221 143 118 206 120 99 203 102 83 213 78 31 213 78 31 213 49 12 +213 49 12 213 49 12 213 49 12 210 31 6 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 192 0 0 192 0 0 +189 0 0 186 0 0 186 0 0 181 0 0 179 0 0 178 0 0 +175 0 0 173 0 0 170 0 0 169 0 0 165 0 0 163 0 0 +160 0 0 158 0 0 157 0 0 153 0 0 150 0 0 147 0 0 +145 0 0 143 0 0 141 0 0 140 1 0 140 1 0 131 0 0 +131 0 0 131 0 0 124 2 0 124 2 0 117 1 0 117 1 0 +131 0 0 145 0 0 163 1 0 149 3 1 111 7 4 97 5 3 +97 5 3 111 7 4 97 5 3 111 7 4 111 7 4 111 7 4 +111 7 4 124 2 0 174 34 14 202 130 106 242 201 184 253 251 245 +243 220 211 218 160 133 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 2 2 2 218 160 133 255 255 255 237 212 203 +213 149 125 218 160 133 196 57 25 213 43 8 213 49 12 213 49 12 +213 78 31 213 78 31 213 78 31 203 99 81 203 99 81 203 99 81 +213 78 31 213 78 31 213 78 31 213 78 31 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 210 31 6 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 192 0 0 192 0 0 189 0 0 +186 0 0 186 0 0 184 0 0 181 0 0 179 0 0 176 0 0 +174 0 0 172 0 0 169 0 0 167 0 0 164 0 0 162 0 0 +159 0 0 157 0 0 153 0 0 152 0 0 150 0 0 147 0 0 +145 0 0 142 0 0 140 1 0 140 1 0 131 0 0 131 0 0 +131 0 0 124 2 0 124 2 0 124 2 0 140 1 0 157 0 0 +167 0 0 171 0 0 163 1 0 117 1 0 97 5 3 97 5 3 +111 7 4 111 7 4 111 7 4 111 7 4 111 7 4 111 7 4 +117 1 0 131 0 0 174 34 14 202 130 106 243 208 194 253 249 244 +246 228 219 218 160 133 1 1 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 2 2 2 218 160 133 255 255 255 237 212 203 +213 149 125 202 130 106 196 46 20 213 43 8 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 78 31 213 78 31 213 78 31 +213 78 31 213 78 31 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 43 8 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 192 0 0 192 0 0 189 0 0 186 0 0 +186 0 0 184 0 0 181 0 0 179 0 0 176 0 0 174 0 0 +172 0 0 170 0 0 167 0 0 165 0 0 162 0 0 160 0 0 +158 0 0 155 0 0 153 0 0 150 0 0 147 0 0 146 0 0 +143 0 0 141 0 0 140 1 0 140 1 0 131 0 0 131 0 0 +124 2 0 131 0 0 146 0 0 164 0 0 174 0 0 173 0 0 +171 0 0 167 0 0 131 0 0 97 5 3 97 5 3 111 7 4 +111 7 4 111 7 4 111 7 4 111 7 4 117 1 0 117 1 0 +117 1 0 131 0 0 173 17 6 202 130 106 247 223 207 253 248 237 +246 228 219 222 184 158 44 12 10 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 2 2 2 222 184 158 255 255 255 237 212 203 +210 136 114 202 130 106 196 46 20 210 31 6 213 43 8 213 43 8 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 43 8 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +192 0 0 192 0 0 189 0 0 189 0 0 186 0 0 186 0 0 +184 0 0 181 0 0 179 0 0 177 0 0 175 0 0 173 0 0 +170 0 0 169 0 0 166 0 0 164 0 0 160 0 0 159 0 0 +157 0 0 153 0 0 152 0 0 150 0 0 147 0 0 145 0 0 +142 0 0 141 0 0 140 1 0 131 0 0 131 0 0 131 0 0 +153 0 0 170 0 0 178 0 0 176 0 0 173 0 0 171 0 0 +171 0 0 150 0 0 111 7 4 97 5 3 97 5 3 111 7 4 +117 1 0 117 1 0 117 1 0 117 1 0 117 1 0 117 1 0 +124 2 0 131 0 0 173 17 6 221 143 118 250 235 219 252 244 235 +246 228 219 222 184 158 44 12 10 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 2 2 2 222 184 158 255 255 255 237 212 203 +210 136 114 198 112 92 185 36 13 210 31 6 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 49 12 213 43 8 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 43 8 210 31 6 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 192 0 0 192 0 0 +192 0 0 189 0 0 188 0 0 186 0 0 184 0 0 184 0 0 +181 0 0 179 0 0 177 0 0 175 0 0 172 0 0 171 0 0 +169 0 0 166 0 0 164 0 0 160 0 0 159 0 0 157 0 0 +155 0 0 152 0 0 150 0 0 147 0 0 145 0 0 143 0 0 +141 0 0 140 1 0 131 0 0 141 0 0 158 0 0 177 0 0 +179 0 0 179 0 0 176 0 0 174 0 0 172 0 0 171 0 0 +165 0 0 117 1 0 111 7 4 97 5 3 111 7 4 117 1 0 +117 1 0 117 1 0 117 1 0 117 1 0 124 2 0 124 2 0 +124 2 0 140 1 0 180 20 5 227 164 124 250 235 219 252 240 230 +246 228 219 222 184 158 44 12 10 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 2 2 2 222 184 158 255 255 255 237 212 203 +210 136 114 188 95 83 187 29 9 201 33 6 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 49 12 213 49 12 213 49 12 213 49 12 210 31 6 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 189 0 0 189 0 0 +188 0 0 186 0 0 186 0 0 184 0 0 181 0 0 181 0 0 +179 0 0 177 0 0 175 0 0 173 0 0 171 0 0 169 0 0 +167 0 0 165 0 0 163 0 0 160 0 0 158 0 0 157 0 0 +153 0 0 150 0 0 150 0 0 147 0 0 145 0 0 141 0 0 +140 1 0 145 0 0 164 0 0 178 0 0 184 0 0 179 0 0 +179 0 0 176 0 0 175 0 0 173 0 0 171 0 0 172 0 0 +140 1 0 111 7 4 111 7 4 111 7 4 117 1 0 117 1 0 +117 1 0 117 1 0 124 2 0 124 2 0 124 2 0 131 0 0 +131 0 0 147 0 0 185 36 13 241 190 156 250 235 219 252 240 230 +249 237 229 218 160 133 44 12 10 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 2 2 2 218 160 133 255 255 255 243 220 211 +210 136 114 188 95 83 182 27 9 195 25 6 210 31 6 210 31 6 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 49 12 213 49 12 210 31 6 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 186 0 0 186 0 0 +186 0 0 184 0 0 184 0 0 181 0 0 179 0 0 178 0 0 +176 0 0 175 0 0 172 0 0 171 0 0 169 0 0 167 0 0 +164 0 0 162 0 0 160 0 0 158 0 0 157 0 0 153 0 0 +150 0 0 150 0 0 147 0 0 145 0 0 142 0 0 150 0 0 +166 0 0 184 0 0 186 0 0 184 0 0 181 0 0 179 0 0 +178 0 0 175 0 0 174 0 0 172 0 0 172 0 0 159 0 0 +117 1 0 111 7 4 111 7 4 117 1 0 117 1 0 117 1 0 +117 1 0 124 2 0 124 2 0 131 0 0 131 0 0 131 0 0 +140 1 0 157 0 0 196 46 20 242 201 184 250 235 219 252 240 230 +246 228 219 218 160 133 44 12 10 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 2 2 2 213 149 125 255 255 255 246 228 219 +210 136 114 188 95 83 180 23 7 195 25 6 210 31 6 210 31 6 +210 31 6 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 49 12 213 43 8 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 184 0 0 184 0 0 +184 0 0 181 0 0 179 0 0 179 0 0 177 0 0 176 0 0 +174 0 0 173 0 0 170 0 0 169 0 0 167 0 0 165 0 0 +163 0 0 160 0 0 158 0 0 157 0 0 155 0 0 152 0 0 +150 0 0 147 0 0 145 0 0 147 0 0 167 0 0 184 0 0 +188 0 0 186 0 0 184 0 0 181 0 0 179 0 0 178 0 0 +177 0 0 174 0 0 173 0 0 172 0 0 170 0 0 131 0 0 +111 7 4 111 7 4 111 7 4 117 1 0 117 1 0 117 1 0 +124 2 0 124 2 0 131 0 0 131 0 0 140 1 0 140 1 0 +142 0 0 167 0 0 204 76 38 243 208 194 247 223 207 251 238 227 +246 228 219 218 160 133 44 12 10 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 2 2 2 213 149 125 255 255 255 251 245 237 +210 136 114 188 95 83 172 22 7 191 24 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 49 12 210 31 6 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 181 0 0 181 0 0 +179 0 0 179 0 0 177 0 0 176 0 0 174 0 0 173 0 0 +172 0 0 170 0 0 169 0 0 167 0 0 165 0 0 163 0 0 +160 0 0 159 0 0 157 0 0 153 0 0 152 0 0 150 0 0 +147 0 0 150 0 0 164 0 0 184 0 0 189 0 0 186 0 0 +186 0 0 184 0 0 181 0 0 179 0 0 179 0 0 177 0 0 +176 0 0 174 0 0 172 0 0 172 0 0 160 0 0 117 1 0 +111 7 4 111 7 4 111 7 4 117 1 0 117 1 0 124 2 0 +124 2 0 131 0 0 131 0 0 140 1 0 141 0 0 145 0 0 +147 0 0 183 2 0 221 143 118 247 223 207 247 223 207 252 240 230 +246 228 219 213 149 125 2 2 2 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 2 2 2 202 130 106 254 254 253 253 253 252 +210 136 114 188 95 83 166 21 8 191 24 6 195 25 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 49 12 213 43 8 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 179 0 0 179 0 0 +177 0 0 176 0 0 175 0 0 174 0 0 172 0 0 171 0 0 +169 0 0 169 0 0 166 0 0 164 0 0 162 0 0 160 0 0 +158 0 0 157 0 0 155 0 0 153 0 0 150 0 0 147 0 0 +160 0 0 181 0 0 192 0 0 189 0 0 188 0 0 186 0 0 +184 0 0 181 0 0 181 0 0 179 0 0 178 0 0 176 0 0 +175 0 0 173 0 0 171 0 0 171 0 0 140 1 0 111 7 4 +111 7 4 111 7 4 117 1 0 117 1 0 117 1 0 124 2 0 +124 2 0 131 0 0 140 1 0 141 0 0 145 0 0 147 0 0 +153 0 0 193 28 10 237 182 145 247 223 207 247 223 207 252 240 230 +243 220 211 213 149 125 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 183 106 85 253 253 252 255 255 255 +213 149 125 188 95 83 166 21 8 180 20 5 191 24 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +210 31 6 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 192 0 0 177 0 0 177 0 0 +175 0 0 174 0 0 173 0 0 172 0 0 170 0 0 169 0 0 +167 0 0 166 0 0 164 0 0 162 0 0 160 0 0 159 0 0 +157 0 0 155 0 0 153 0 0 150 0 0 153 0 0 172 0 0 +189 0 0 192 0 0 189 0 0 188 0 0 186 0 0 184 0 0 +184 0 0 181 0 0 179 0 0 178 0 0 177 0 0 175 0 0 +174 0 0 172 0 0 172 0 0 163 0 0 117 1 0 111 7 4 +111 7 4 111 7 4 117 1 0 117 1 0 124 2 0 124 2 0 +131 0 0 131 0 0 140 1 0 143 0 0 147 0 0 150 0 0 +167 0 0 213 78 31 241 190 156 247 223 207 247 223 207 252 240 230 +237 212 203 202 130 106 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 177 84 68 253 253 252 255 255 255 +222 184 158 188 95 83 156 18 6 175 12 4 180 20 5 195 25 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +210 31 6 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 189 0 0 174 0 0 174 0 0 +173 0 0 172 0 0 171 0 0 170 0 0 169 0 0 167 0 0 +165 0 0 164 0 0 162 0 0 160 0 0 158 0 0 157 0 0 +155 0 0 153 0 0 150 0 0 157 0 0 184 0 0 196 0 0 +189 0 0 189 0 0 186 0 0 186 0 0 186 0 0 184 0 0 +181 0 0 179 0 0 179 0 0 178 0 0 176 0 0 174 0 0 +173 0 0 171 0 0 171 0 0 147 0 0 111 7 4 111 7 4 +111 7 4 117 1 0 117 1 0 117 1 0 124 2 0 131 0 0 +131 0 0 140 1 0 141 0 0 145 0 0 150 0 0 153 0 0 +184 9 3 227 164 124 241 190 156 247 223 207 247 223 207 252 240 230 +237 212 203 183 106 85 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 44 12 10 249 237 229 255 255 255 +238 198 189 188 95 83 156 16 7 168 14 5 180 20 5 191 24 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 186 0 0 171 0 0 171 0 0 +170 0 0 169 0 0 169 0 0 167 0 0 165 0 0 164 0 0 +162 0 0 160 0 0 159 0 0 158 0 0 157 0 0 153 0 0 +152 0 0 150 0 0 165 0 0 189 0 0 192 0 0 192 0 0 +189 0 0 188 0 0 186 0 0 186 0 0 184 0 0 184 0 0 +181 0 0 179 0 0 178 0 0 177 0 0 175 0 0 173 0 0 +172 0 0 171 0 0 169 0 0 131 0 0 111 7 4 111 7 4 +111 7 4 117 1 0 117 1 0 124 2 0 124 2 0 131 0 0 +131 0 0 141 0 0 143 0 0 147 0 0 150 0 0 159 0 0 +213 78 31 234 180 140 242 201 184 247 223 207 247 223 207 252 240 230 +237 212 203 177 84 68 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 44 12 10 237 212 203 255 255 255 +246 228 219 183 106 85 153 32 16 157 8 2 180 20 5 180 20 5 +195 25 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 210 31 6 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 186 0 0 169 0 0 169 0 0 +167 0 0 166 0 0 165 0 0 164 0 0 163 0 0 162 0 0 +160 0 0 159 0 0 157 0 0 157 0 0 153 0 0 150 0 0 +150 0 0 171 0 0 192 0 0 192 0 0 189 0 0 189 0 0 +188 0 0 186 0 0 186 0 0 184 0 0 184 0 0 181 0 0 +179 0 0 178 0 0 177 0 0 175 0 0 174 0 0 172 0 0 +171 0 0 170 0 0 164 0 0 117 1 0 111 7 4 111 7 4 +117 1 0 117 1 0 117 1 0 124 2 0 131 0 0 131 0 0 +140 1 0 142 0 0 146 0 0 150 0 0 153 0 0 182 27 9 +231 168 130 241 190 156 243 208 194 247 223 207 248 226 214 250 239 228 +238 198 189 44 12 10 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 44 12 10 222 184 158 255 255 255 +251 242 233 202 130 106 153 32 16 149 3 1 175 12 4 180 20 5 +180 20 5 195 25 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 184 0 0 165 0 0 166 0 0 +165 0 0 164 0 0 163 0 0 162 0 0 160 0 0 159 0 0 +158 0 0 157 0 0 155 0 0 153 0 0 150 0 0 150 0 0 +174 0 0 192 0 0 192 0 0 192 0 0 189 0 0 188 0 0 +186 0 0 186 0 0 184 0 0 184 0 0 181 0 0 179 0 0 +179 0 0 177 0 0 176 0 0 174 0 0 173 0 0 171 0 0 +170 0 0 169 0 0 150 0 0 111 7 4 97 5 3 111 7 4 +117 1 0 117 1 0 124 2 0 124 2 0 131 0 0 131 0 0 +140 1 0 145 0 0 147 0 0 152 0 0 159 0 0 203 102 83 +241 190 156 241 190 156 247 223 207 247 223 207 250 235 219 246 228 219 +222 184 158 44 12 10 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 2 2 2 213 149 125 255 255 255 +253 252 250 213 149 125 176 59 34 142 1 0 168 14 5 180 20 5 +180 20 5 180 20 5 195 25 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 179 0 0 162 0 0 163 0 0 +162 0 0 160 0 0 160 0 0 159 0 0 158 0 0 157 0 0 +155 0 0 153 0 0 152 0 0 150 0 0 150 0 0 175 0 0 +192 0 0 192 0 0 189 0 0 189 0 0 188 0 0 186 0 0 +186 0 0 184 0 0 181 0 0 181 0 0 179 0 0 179 0 0 +178 0 0 176 0 0 175 0 0 173 0 0 172 0 0 170 0 0 +169 0 0 170 0 0 131 0 0 97 5 3 111 7 4 117 1 0 +117 1 0 117 1 0 124 2 0 131 0 0 131 0 0 140 1 0 +142 0 0 147 0 0 150 0 0 153 0 0 193 53 28 234 180 140 +241 190 156 241 190 156 247 223 207 247 223 207 250 235 219 246 228 219 +213 149 125 44 12 10 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 183 106 85 253 249 244 +255 255 255 222 184 158 177 84 68 140 1 0 157 8 2 175 12 4 +180 20 5 180 20 5 180 20 5 195 25 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 210 31 6 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 178 0 0 160 0 0 160 0 0 +159 0 0 158 0 0 157 0 0 157 0 0 155 0 0 153 0 0 +153 0 0 152 0 0 150 0 0 150 0 0 177 0 0 196 0 0 +192 0 0 189 0 0 189 0 0 188 0 0 186 0 0 186 0 0 +184 0 0 184 0 0 181 0 0 179 0 0 179 0 0 178 0 0 +177 0 0 175 0 0 174 0 0 172 0 0 171 0 0 169 0 0 +169 0 0 166 0 0 124 2 0 97 5 3 117 1 0 117 1 0 +117 1 0 124 2 0 124 2 0 131 0 0 131 0 0 141 0 0 +145 0 0 150 0 0 150 0 0 173 17 6 227 164 124 241 190 156 +241 190 156 242 201 184 247 223 207 247 223 207 251 236 222 240 219 206 +183 106 85 2 2 2 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 90 10 7 246 228 219 +255 255 255 246 228 219 177 84 68 141 11 5 142 1 0 175 12 4 +175 12 4 180 20 5 180 20 5 180 20 5 191 24 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 176 0 0 157 0 0 157 0 0 +157 0 0 157 0 0 155 0 0 153 0 0 152 0 0 150 0 0 +150 0 0 150 0 0 147 0 0 173 0 0 192 0 0 192 0 0 +189 0 0 188 0 0 186 0 0 186 0 0 186 0 0 184 0 0 +181 0 0 181 0 0 179 0 0 179 0 0 178 0 0 176 0 0 +175 0 0 173 0 0 172 0 0 170 0 0 169 0 0 169 0 0 +167 0 0 159 0 0 117 1 0 111 7 4 117 1 0 117 1 0 +124 2 0 124 2 0 131 0 0 131 0 0 140 1 0 143 0 0 +147 0 0 150 0 0 163 1 0 206 120 99 241 190 156 241 190 156 +241 190 156 247 223 207 247 223 207 250 235 219 250 239 228 237 212 203 +177 84 68 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 44 12 10 237 212 203 +255 255 255 254 254 253 202 130 106 136 24 13 140 1 0 157 8 2 +175 12 4 175 12 4 180 20 5 180 20 5 180 20 5 195 25 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 173 0 0 153 0 0 155 0 0 +153 0 0 153 0 0 152 0 0 150 0 0 150 0 0 150 0 0 +147 0 0 146 0 0 169 0 0 192 0 0 189 0 0 189 0 0 +188 0 0 186 0 0 186 0 0 186 0 0 184 0 0 184 0 0 +181 0 0 179 0 0 179 0 0 178 0 0 177 0 0 175 0 0 +174 0 0 172 0 0 171 0 0 169 0 0 169 0 0 167 0 0 +167 0 0 150 0 0 117 1 0 117 1 0 117 1 0 117 1 0 +124 2 0 131 0 0 131 0 0 140 1 0 141 0 0 145 0 0 +147 0 0 160 0 0 204 76 38 241 190 156 241 190 156 241 190 156 +241 190 156 247 223 207 250 235 219 250 235 219 250 239 228 222 184 158 +44 12 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 213 149 125 +253 253 252 255 255 255 222 184 158 142 30 13 131 0 0 149 3 1 +174 10 3 175 12 4 175 12 4 180 20 5 180 20 5 191 24 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 210 31 6 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 170 0 0 150 0 0 152 0 0 +150 0 0 150 0 0 150 0 0 147 0 0 147 0 0 146 0 0 +145 0 0 164 0 0 192 0 0 189 0 0 188 0 0 186 0 0 +186 0 0 186 0 0 184 0 0 184 0 0 181 0 0 181 0 0 +179 0 0 178 0 0 178 0 0 176 0 0 175 0 0 173 0 0 +172 0 0 171 0 0 170 0 0 169 0 0 167 0 0 165 0 0 +167 0 0 146 0 0 117 1 0 117 1 0 117 1 0 124 2 0 +131 0 0 131 0 0 140 1 0 141 0 0 145 0 0 147 0 0 +160 0 0 209 61 24 234 180 140 241 190 156 241 190 156 241 190 156 +247 223 207 250 235 219 250 235 219 250 235 219 246 228 219 213 149 125 +38 6 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 177 84 68 +251 245 237 255 255 255 246 228 219 176 59 34 131 0 0 140 1 0 +168 14 5 174 10 3 175 12 4 175 12 4 180 20 5 195 25 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +210 31 6 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 169 0 0 147 0 0 150 0 0 +150 0 0 147 0 0 147 0 0 146 0 0 145 0 0 142 0 0 +153 0 0 186 0 0 189 0 0 188 0 0 186 0 0 186 0 0 +186 0 0 184 0 0 184 0 0 181 0 0 181 0 0 179 0 0 +179 0 0 178 0 0 176 0 0 175 0 0 174 0 0 172 0 0 +171 0 0 170 0 0 169 0 0 167 0 0 166 0 0 164 0 0 +167 0 0 145 0 0 117 1 0 117 1 0 124 2 0 124 2 0 +131 0 0 131 0 0 140 1 0 142 0 0 145 0 0 167 0 0 +203 40 12 227 164 124 234 180 140 241 190 156 241 190 156 241 190 156 +247 223 207 250 235 219 250 235 219 250 239 228 237 212 203 183 106 85 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 44 12 10 +237 212 203 255 255 255 253 252 251 202 130 106 124 2 0 124 2 0 +149 3 1 168 14 5 174 10 3 175 12 4 175 12 4 191 24 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 210 31 6 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 173 0 0 146 0 0 146 0 0 +146 0 0 145 0 0 145 0 0 143 0 0 142 0 0 143 0 0 +177 0 0 189 0 0 186 0 0 186 0 0 186 0 0 184 0 0 +184 0 0 181 0 0 181 0 0 179 0 0 179 0 0 178 0 0 +177 0 0 176 0 0 175 0 0 173 0 0 172 0 0 171 0 0 +170 0 0 169 0 0 167 0 0 166 0 0 165 0 0 165 0 0 +169 0 0 141 0 0 117 1 0 124 2 0 124 2 0 131 0 0 +131 0 0 140 1 0 141 0 0 146 0 0 173 0 0 210 31 6 +206 120 99 227 164 124 227 164 124 234 180 140 234 180 140 242 201 184 +250 235 219 250 235 219 250 235 219 250 239 228 222 184 158 44 12 10 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 +213 149 125 253 253 252 255 255 255 238 198 189 136 24 13 124 2 0 +131 0 0 157 8 2 168 14 5 168 14 5 175 12 4 191 24 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 210 31 6 196 0 0 192 0 0 192 0 0 +192 0 0 192 0 0 196 0 0 172 0 0 145 0 0 145 0 0 +143 0 0 142 0 0 142 0 0 141 0 0 140 1 0 159 0 0 +188 0 0 186 0 0 186 0 0 186 0 0 184 0 0 184 0 0 +181 0 0 181 0 0 179 0 0 179 0 0 178 0 0 177 0 0 +175 0 0 174 0 0 174 0 0 172 0 0 170 0 0 170 0 0 +169 0 0 167 0 0 166 0 0 165 0 0 164 0 0 166 0 0 +170 0 0 143 0 0 117 1 0 124 2 0 131 0 0 131 0 0 +140 1 0 141 0 0 143 0 0 165 0 0 195 25 6 213 78 31 +206 120 99 221 143 118 227 164 124 227 164 124 234 180 140 247 223 207 +250 235 219 250 235 219 251 236 222 246 228 219 213 149 125 44 12 10 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +177 84 68 246 228 219 255 255 255 253 252 250 177 84 68 124 2 0 +124 2 0 149 3 1 168 14 5 168 14 5 168 14 5 184 9 3 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 210 31 6 192 0 0 189 0 0 +192 0 0 192 0 0 192 0 0 176 0 0 142 0 0 142 0 0 +141 0 0 141 0 0 141 0 0 140 1 0 142 0 0 178 0 0 +186 0 0 186 0 0 184 0 0 184 0 0 181 0 0 181 0 0 +181 0 0 179 0 0 179 0 0 178 0 0 177 0 0 176 0 0 +174 0 0 173 0 0 172 0 0 171 0 0 169 0 0 169 0 0 +169 0 0 166 0 0 165 0 0 165 0 0 166 0 0 169 0 0 +171 0 0 142 0 0 124 2 0 131 0 0 131 0 0 131 0 0 +140 1 0 143 0 0 146 0 0 184 9 3 213 78 31 213 78 31 +203 102 83 206 120 99 221 143 118 227 164 124 241 190 156 247 223 207 +250 235 219 250 235 219 252 240 230 237 212 203 183 106 85 2 2 2 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +44 12 10 222 184 158 254 254 253 255 255 255 222 184 158 124 2 0 +124 2 0 131 0 0 157 8 2 168 14 5 168 14 5 184 9 3 +196 0 0 195 25 6 195 25 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 210 31 6 196 0 0 +188 0 0 189 0 0 189 0 0 179 0 0 140 1 0 140 1 0 +140 1 0 140 1 0 140 1 0 131 0 0 155 0 0 186 0 0 +184 0 0 184 0 0 181 0 0 181 0 0 179 0 0 179 0 0 +179 0 0 178 0 0 177 0 0 176 0 0 175 0 0 174 0 0 +172 0 0 171 0 0 171 0 0 169 0 0 169 0 0 167 0 0 +166 0 0 165 0 0 164 0 0 166 0 0 169 0 0 172 0 0 +173 0 0 141 0 0 124 2 0 131 0 0 131 0 0 140 1 0 +142 0 0 146 0 0 166 21 8 209 61 24 213 78 31 213 78 31 +213 78 31 203 102 83 206 120 99 227 164 124 242 201 184 247 223 207 +247 223 207 250 235 219 249 237 229 222 184 158 44 12 10 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +2 2 2 183 106 85 251 245 237 255 255 255 251 245 237 177 84 68 +117 1 0 117 1 0 142 1 0 157 8 2 164 15 5 184 9 3 +196 0 0 195 25 6 195 25 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +195 25 6 186 0 0 186 0 0 181 0 0 140 1 0 140 1 0 +140 1 0 131 0 0 131 0 0 131 0 0 171 0 0 184 0 0 +181 0 0 181 0 0 181 0 0 179 0 0 179 0 0 178 0 0 +178 0 0 177 0 0 176 0 0 175 0 0 173 0 0 173 0 0 +171 0 0 170 0 0 169 0 0 169 0 0 167 0 0 166 0 0 +165 0 0 164 0 0 166 0 0 169 0 0 171 0 0 174 0 0 +175 0 0 145 0 0 131 0 0 131 0 0 140 1 0 141 0 0 +149 3 1 174 34 14 196 57 25 209 61 24 209 61 24 209 61 24 +213 78 31 213 78 31 203 99 81 227 164 124 243 210 197 243 210 197 +247 223 207 250 235 219 237 212 203 183 106 85 2 2 2 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 44 12 10 238 198 189 255 255 255 255 255 255 222 184 158 +111 7 4 117 1 0 124 2 0 153 2 0 157 8 2 179 7 2 +196 0 0 196 0 0 196 0 0 195 25 6 195 25 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 210 31 6 189 0 0 179 0 0 141 0 0 131 0 0 +131 0 0 131 0 0 131 0 0 142 0 0 181 0 0 181 0 0 +179 0 0 179 0 0 179 0 0 178 0 0 177 0 0 176 0 0 +175 0 0 174 0 0 174 0 0 173 0 0 172 0 0 171 0 0 +169 0 0 169 0 0 169 0 0 167 0 0 166 0 0 164 0 0 +164 0 0 166 0 0 169 0 0 171 0 0 174 0 0 177 0 0 +178 0 0 147 0 0 131 0 0 140 1 0 141 0 0 159 13 5 +189 46 14 196 60 25 196 60 25 196 57 25 209 61 24 209 61 24 +209 61 24 213 78 31 203 99 81 237 187 164 243 208 194 243 208 194 +247 223 207 246 228 219 222 184 158 44 12 10 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 2 2 2 183 106 85 253 249 244 255 255 255 253 252 250 +177 84 68 117 1 0 117 1 0 131 0 0 157 8 2 172 5 1 +196 0 0 196 0 0 196 0 0 195 25 6 195 25 6 195 25 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 195 25 6 146 0 0 131 0 0 +131 0 0 131 0 0 124 2 0 155 0 0 181 0 0 179 0 0 +179 0 0 178 0 0 178 0 0 177 0 0 176 0 0 175 0 0 +174 0 0 173 0 0 172 0 0 171 0 0 170 0 0 170 0 0 +169 0 0 167 0 0 166 0 0 165 0 0 165 0 0 164 0 0 +167 0 0 169 0 0 172 0 0 174 0 0 177 0 0 179 0 0 +181 0 0 152 0 0 131 0 0 149 3 1 174 34 14 196 60 25 +204 67 22 209 61 24 209 61 24 209 61 24 209 61 24 209 61 24 +209 61 24 209 61 24 214 127 110 241 196 185 242 201 184 242 201 184 +247 223 207 237 212 203 202 130 106 38 6 5 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 44 12 10 238 198 189 254 254 253 255 255 255 +238 198 189 111 7 4 117 1 0 117 1 0 142 1 0 172 5 1 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 195 25 6 +195 25 6 195 25 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 187 29 9 156 18 6 +131 0 0 124 2 0 124 2 0 166 0 0 179 0 0 177 0 0 +177 0 0 176 0 0 175 0 0 174 0 0 174 0 0 173 0 0 +172 0 0 171 0 0 170 0 0 170 0 0 169 0 0 169 0 0 +167 0 0 166 0 0 165 0 0 164 0 0 165 0 0 167 0 0 +170 0 0 172 0 0 175 0 0 177 0 0 179 0 0 181 0 0 +184 0 0 172 5 1 168 26 11 194 55 23 204 67 22 204 67 22 +204 67 22 209 61 24 209 61 24 209 61 24 209 61 24 209 61 24 +209 61 24 204 76 38 236 173 149 236 194 173 236 194 173 242 201 184 +240 219 206 222 184 158 44 12 10 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 2 2 2 183 106 85 249 237 229 255 255 255 +253 252 250 183 106 85 111 7 4 117 1 0 117 1 0 149 3 1 +184 9 3 196 0 0 196 0 0 196 0 0 196 0 0 195 25 6 +195 25 6 195 25 6 195 25 6 195 25 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 200 41 9 +179 30 10 156 18 6 140 1 0 170 0 0 177 0 0 175 0 0 +176 0 0 175 0 0 174 0 0 173 0 0 173 0 0 172 0 0 +171 0 0 170 0 0 169 0 0 169 0 0 167 0 0 166 0 0 +166 0 0 165 0 0 164 0 0 166 0 0 169 0 0 170 0 0 +173 0 0 175 0 0 177 0 0 178 0 0 181 0 0 184 9 3 +204 37 8 213 49 12 204 67 22 204 67 22 204 67 22 204 67 22 +204 67 22 209 61 24 209 61 24 209 61 24 209 61 24 209 61 24 +209 61 24 221 143 118 237 187 164 237 187 164 237 187 164 238 198 189 +237 212 203 183 106 85 2 2 2 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 44 12 10 222 184 158 255 255 255 +255 255 255 237 212 203 136 24 13 117 1 0 117 1 0 124 2 0 +176 6 2 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 195 25 6 195 25 6 195 25 6 195 25 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 200 41 9 +200 41 9 189 46 14 200 41 9 195 25 6 184 9 3 179 7 2 +172 0 0 170 0 0 171 0 0 171 0 0 171 0 0 170 0 0 +169 0 0 169 0 0 167 0 0 166 0 0 166 0 0 164 0 0 +164 0 0 165 0 0 167 0 0 169 0 0 170 0 0 171 0 0 +174 0 0 178 0 0 184 9 3 195 25 6 213 49 12 213 49 12 +213 78 31 204 67 22 204 67 22 204 67 22 204 67 22 204 67 22 +209 61 24 209 61 24 209 61 24 209 61 24 209 61 24 209 61 24 +203 102 83 237 187 164 237 187 164 237 187 164 237 187 164 237 212 203 +222 184 158 44 12 10 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 2 2 2 177 84 68 246 228 219 +255 255 255 255 255 255 198 112 92 117 1 0 117 1 0 117 1 0 +142 1 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 195 25 6 195 25 6 195 25 6 195 25 6 +195 25 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 213 43 8 213 43 8 213 43 8 213 43 8 200 41 9 +189 46 14 189 46 14 200 41 9 213 43 8 213 43 8 213 43 8 +201 33 6 191 24 6 184 9 3 172 0 0 169 0 0 167 0 0 +167 0 0 166 0 0 164 0 0 163 0 0 163 0 0 163 0 0 +164 0 0 167 0 0 169 0 0 171 0 0 179 7 2 191 24 6 +204 37 8 213 49 12 213 49 12 213 78 31 213 78 31 213 78 31 +213 78 31 209 61 24 204 67 22 204 67 22 204 67 22 204 67 22 +209 61 24 209 61 24 209 61 24 209 61 24 209 61 24 213 78 31 +236 173 149 237 187 164 237 187 164 237 187 164 238 198 189 238 198 189 +183 106 85 2 2 2 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 44 12 10 213 149 125 +253 249 244 255 255 255 246 228 219 153 32 16 117 1 0 117 1 0 +117 1 0 167 2 1 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 195 25 6 195 25 6 195 25 6 +195 25 6 195 25 6 195 25 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 213 43 8 213 43 8 200 41 9 +186 41 14 189 46 14 200 41 9 213 43 8 213 43 8 213 49 12 +213 49 12 213 49 12 213 49 12 213 43 8 213 43 8 201 33 6 +201 33 6 191 24 6 191 24 6 191 24 6 191 24 6 191 24 6 +201 33 6 204 37 8 213 43 8 213 49 12 213 49 12 213 49 12 +213 78 31 213 78 31 213 78 31 213 78 31 213 78 31 213 78 31 +213 78 31 209 61 24 204 67 22 204 67 22 204 67 22 209 61 24 +209 61 24 209 61 24 209 61 24 209 61 24 209 61 24 221 143 118 +237 187 164 237 187 164 237 187 164 237 187 164 237 212 203 213 149 125 +44 12 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 44 12 10 +222 184 158 255 255 255 254 254 253 218 160 133 131 0 0 117 1 0 +117 1 0 124 2 0 172 5 1 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 195 25 6 195 25 6 +195 25 6 195 25 6 195 25 6 195 25 6 195 25 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 213 43 8 200 41 9 +186 41 14 186 41 14 206 42 10 213 43 8 213 43 8 213 43 8 +213 43 8 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 78 31 213 78 31 213 78 31 213 78 31 213 78 31 +213 78 31 213 78 31 204 67 22 204 67 22 204 67 22 209 61 24 +209 61 24 209 61 24 209 61 24 209 61 24 214 127 110 237 187 164 +237 187 164 237 187 164 237 187 164 238 198 189 222 184 158 90 10 7 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 +177 84 68 240 219 206 254 254 253 251 245 237 188 95 83 124 2 0 +124 2 0 124 2 0 131 0 0 179 7 2 196 0 0 192 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 195 25 6 +195 25 6 195 25 6 195 25 6 195 25 6 195 25 6 195 25 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 201 33 6 +185 36 13 185 36 13 200 41 9 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 78 31 213 78 31 213 78 31 213 78 31 +213 78 31 213 78 31 204 67 22 204 67 22 204 67 22 209 61 24 +209 61 24 209 61 24 213 49 12 203 102 83 236 173 149 233 177 153 +233 177 153 237 187 164 236 194 173 238 198 189 183 106 85 2 2 2 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +44 12 10 183 106 85 249 237 229 253 253 252 243 220 211 153 32 16 +131 0 0 124 2 0 124 2 0 140 1 0 179 7 2 196 0 0 +192 0 0 192 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +195 25 6 195 25 6 195 25 6 195 25 6 195 25 6 195 25 6 +195 25 6 195 25 6 210 31 6 201 33 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 201 33 6 +179 30 10 185 36 13 200 41 9 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 78 31 213 78 31 213 78 31 +213 78 31 213 78 31 213 78 31 209 61 24 209 61 24 209 61 24 +209 61 24 213 49 12 213 78 31 236 173 149 233 177 153 233 177 153 +233 177 153 237 187 164 237 212 203 202 130 106 44 12 10 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 44 12 10 218 160 133 253 249 244 254 252 249 222 184 158 +156 16 7 131 0 0 131 0 0 131 0 0 142 1 0 179 7 2 +196 0 0 192 0 0 192 0 0 184 9 3 184 9 3 184 9 3 +184 9 3 195 25 6 195 25 6 195 25 6 195 25 6 195 25 6 +195 25 6 195 25 6 195 25 6 195 25 6 201 33 6 201 33 6 +201 33 6 201 33 6 210 31 6 210 31 6 210 31 6 201 33 6 +179 30 10 179 30 10 204 37 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 78 31 213 78 31 213 78 31 +213 78 31 213 78 31 213 78 31 213 78 31 213 78 31 209 61 24 +213 49 12 213 78 31 239 175 143 236 173 149 236 173 149 236 173 149 +237 187 164 238 198 189 222 184 158 44 12 10 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 44 12 10 222 184 158 253 249 244 253 249 244 +213 149 125 150 0 0 140 1 0 131 0 0 140 1 0 142 1 0 +179 7 2 196 0 0 192 0 0 192 0 0 192 0 0 184 9 3 +184 9 3 184 9 3 195 25 6 195 25 6 195 25 6 195 25 6 +195 25 6 195 25 6 195 25 6 195 25 6 195 25 6 201 33 6 +201 33 6 201 33 6 201 33 6 201 33 6 201 33 6 201 33 6 +179 30 10 179 30 10 204 37 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 78 31 +213 78 31 213 78 31 213 78 31 213 78 31 213 78 31 213 49 12 +213 78 31 239 175 143 236 173 149 236 173 149 236 173 149 241 190 156 +236 194 173 222 184 158 177 84 68 2 2 2 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 2 2 2 177 84 68 222 184 158 253 249 244 +249 237 229 198 112 92 152 0 0 141 0 0 141 0 0 142 0 0 +147 0 0 176 6 2 196 0 0 196 0 0 192 0 0 192 0 0 +184 9 3 184 9 3 184 9 3 191 24 6 195 25 6 195 25 6 +195 25 6 195 25 6 195 25 6 195 25 6 195 25 6 195 25 6 +201 33 6 201 33 6 201 33 6 201 33 6 201 33 6 201 33 6 +187 29 9 179 30 10 201 33 6 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 78 31 +213 78 31 213 78 31 213 78 31 213 78 31 213 49 12 213 78 31 +231 168 130 239 175 143 239 175 143 236 173 149 239 175 143 236 194 173 +222 184 158 177 84 68 2 2 2 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 2 2 2 177 84 68 238 198 189 +253 249 244 246 228 219 191 90 72 155 0 0 146 0 0 146 0 0 +147 0 0 147 0 0 172 5 1 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 195 25 6 +195 25 6 195 25 6 195 25 6 195 25 6 195 25 6 195 25 6 +195 25 6 201 33 6 201 33 6 201 33 6 201 33 6 210 31 6 +187 29 9 179 30 10 201 33 6 210 31 6 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 78 31 213 49 12 213 49 12 213 78 31 231 168 130 +239 175 143 239 175 143 239 175 143 239 175 143 237 187 164 222 184 158 +183 106 85 38 6 5 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 38 6 5 183 106 85 +237 212 203 253 249 244 243 220 211 192 80 59 159 0 0 150 0 0 +150 0 0 152 0 0 150 0 0 167 2 1 192 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 195 25 6 +195 25 6 195 25 6 195 25 6 195 25 6 195 25 6 195 25 6 +195 25 6 195 25 6 210 31 6 210 31 6 210 31 6 210 31 6 +201 33 6 179 30 10 201 33 6 210 31 6 210 31 6 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 203 99 81 231 168 130 239 175 143 +239 175 143 239 175 143 239 175 143 237 187 164 222 184 158 183 106 85 +44 12 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 38 6 5 +177 84 68 222 184 158 251 245 237 243 220 211 191 90 72 163 0 0 +159 3 1 157 0 0 158 0 0 157 0 0 163 1 0 183 2 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 195 25 6 195 25 6 195 25 6 195 25 6 195 25 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +201 33 6 182 27 9 201 33 6 210 31 6 210 31 6 210 31 6 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 78 31 206 120 99 239 175 143 239 175 143 239 175 143 +239 175 143 239 175 143 237 187 164 222 184 158 183 106 85 38 6 5 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +38 6 5 177 84 68 222 184 158 252 243 235 243 220 211 191 90 72 +167 2 1 163 1 0 163 1 0 163 1 0 160 1 0 163 1 0 +176 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 195 25 6 195 25 6 195 25 6 195 25 6 195 25 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +201 33 6 182 27 9 195 25 6 210 31 6 210 31 6 210 31 6 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 78 31 221 143 118 239 175 143 239 175 143 239 175 143 239 175 143 +239 175 143 237 187 164 222 184 158 183 106 85 44 12 10 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 2 2 2 44 12 10 222 184 158 249 237 229 243 220 211 +198 112 92 173 17 6 172 5 1 169 0 0 167 0 0 166 0 0 +166 0 0 170 0 0 183 2 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 195 25 6 195 25 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 191 24 6 187 29 9 210 31 6 210 31 6 210 31 6 +210 31 6 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 78 31 +227 164 124 231 168 130 239 175 143 239 175 143 239 175 143 239 175 143 +222 184 158 222 184 158 177 84 68 38 6 5 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 2 2 2 44 12 10 213 149 125 246 228 219 +246 228 219 210 136 114 179 30 10 176 6 2 179 0 0 174 0 0 +171 0 0 171 0 0 171 0 0 178 0 0 192 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 191 24 6 187 29 9 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 213 49 12 +213 49 12 213 49 12 213 49 12 213 78 31 206 120 99 227 164 124 +227 164 124 231 168 130 239 175 143 239 175 143 239 175 143 222 184 158 +213 149 125 177 84 68 2 2 2 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 2 2 2 44 12 10 183 106 85 +238 198 189 246 228 219 236 173 149 184 62 32 180 23 7 184 9 3 +183 2 0 179 0 0 176 0 0 177 0 0 178 0 0 183 2 0 +196 0 0 196 0 0 196 0 0 196 0 0 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 191 24 6 191 24 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 49 12 213 49 12 213 49 12 213 49 12 +213 43 8 213 78 31 213 78 31 227 164 124 227 164 124 227 164 124 +227 164 124 231 168 130 239 175 143 239 175 143 222 184 158 202 130 106 +44 12 10 2 2 2 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 44 12 10 +177 84 68 222 184 158 246 228 219 241 196 185 203 99 81 185 36 13 +193 28 10 196 0 0 192 0 0 183 2 0 183 2 0 183 2 0 +183 2 0 186 0 0 196 0 0 196 0 0 196 0 0 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 191 24 6 191 24 6 195 25 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 49 12 +213 78 31 227 164 124 227 164 124 227 164 124 227 164 124 227 164 124 +231 168 130 231 168 130 236 173 149 218 160 133 183 106 85 44 12 10 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +2 2 2 44 12 10 183 106 85 238 198 189 237 212 203 221 143 118 +192 80 59 196 46 20 193 28 10 196 0 0 196 0 0 189 0 0 +186 0 0 188 0 0 189 0 0 192 0 0 196 0 0 196 0 0 +196 0 0 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 191 24 6 195 25 6 195 25 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 49 12 213 78 31 206 120 99 +227 164 124 227 164 124 227 164 124 227 164 124 227 164 124 227 164 124 +231 168 130 218 160 133 202 130 106 44 12 10 2 2 2 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 1 1 1 44 12 10 90 10 7 213 149 125 237 212 203 +241 196 185 203 102 83 193 53 28 193 53 28 203 40 12 210 31 6 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 210 31 6 210 31 6 +195 25 6 191 24 6 195 25 6 195 25 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 213 43 8 213 43 8 +213 43 8 213 43 8 213 43 8 213 43 8 213 43 8 210 31 6 +213 43 8 213 78 31 213 78 31 206 120 99 227 164 124 227 164 124 +227 164 124 227 164 124 227 164 124 227 164 124 227 164 124 218 160 133 +213 149 125 183 106 85 44 12 10 2 2 2 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 2 2 2 44 12 10 177 84 68 +213 149 125 238 198 189 233 177 153 203 99 81 193 53 28 193 53 28 +209 61 24 204 51 17 210 31 6 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +184 9 3 184 9 3 195 25 6 195 25 6 195 25 6 210 31 6 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 +210 31 6 210 31 6 210 31 6 213 43 8 213 49 12 213 78 31 +213 78 31 221 143 118 227 164 124 227 164 124 227 164 124 227 164 124 +227 164 124 227 164 124 227 164 124 227 164 124 213 149 125 183 106 85 +44 12 10 2 2 2 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 +44 12 10 177 84 68 213 149 125 238 198 189 221 154 132 203 99 81 +204 76 38 204 76 38 204 76 38 204 76 38 209 61 24 205 44 13 +210 31 6 195 25 6 195 25 6 196 0 0 196 0 0 196 0 0 +196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 196 0 0 +210 31 6 210 31 6 210 31 6 210 31 6 210 31 6 213 49 12 +213 49 12 213 78 31 213 78 31 213 78 31 206 120 99 227 164 124 +227 164 124 227 164 124 227 164 124 227 164 124 227 164 124 227 164 124 +227 164 124 227 164 124 202 130 106 183 106 85 44 12 10 38 6 5 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +1 1 1 2 2 2 44 12 10 177 84 68 202 130 106 222 184 158 +221 154 132 206 120 99 192 80 59 204 76 38 204 76 38 192 80 59 +192 80 59 192 80 59 204 76 38 204 76 38 204 76 38 209 61 24 +209 61 24 209 61 24 196 46 20 204 51 17 204 51 17 209 61 24 +204 76 38 213 78 31 213 78 31 213 78 31 213 78 31 213 78 31 +206 120 99 206 120 99 206 120 99 221 143 118 221 143 118 227 164 124 +227 164 124 227 164 124 227 164 124 227 164 124 227 164 124 227 164 124 +202 130 106 183 106 85 44 12 10 44 12 10 2 2 2 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 2 2 2 44 12 10 44 12 10 +183 106 85 213 149 125 218 160 133 214 127 110 203 102 83 192 80 59 +204 76 38 192 80 59 192 80 59 192 80 59 203 99 81 203 99 81 +203 99 81 203 99 81 203 99 81 203 99 81 203 99 81 203 99 81 +203 102 83 203 102 83 203 102 83 206 120 99 206 120 99 206 120 99 +206 120 99 206 120 99 206 120 99 206 120 99 227 164 124 227 164 124 +227 164 124 227 164 124 227 164 124 202 130 106 183 106 85 177 84 68 +44 12 10 2 2 2 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 +2 2 2 44 12 10 44 12 10 183 106 85 183 106 85 202 130 106 +214 127 110 206 120 99 203 99 81 203 99 81 203 99 81 203 99 81 +203 99 81 203 99 81 203 99 81 203 99 81 203 99 81 203 99 81 +203 102 83 203 102 83 203 102 83 203 102 83 206 120 99 206 120 99 +206 120 99 206 120 99 206 120 99 221 143 118 206 120 99 202 130 106 +202 130 106 183 106 85 177 84 68 44 12 10 44 12 10 2 2 2 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 2 2 2 2 2 2 44 12 10 44 12 10 +44 12 10 177 84 68 183 106 85 183 106 85 183 106 85 188 95 83 +191 90 72 203 99 81 203 99 81 203 99 81 203 99 81 203 99 81 +203 102 83 203 102 83 203 102 83 203 102 83 198 112 92 198 112 92 +198 112 92 183 106 85 183 106 85 177 84 68 177 84 68 44 12 10 +44 12 10 38 6 5 2 2 2 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 +2 2 2 2 2 2 2 2 2 44 12 10 44 12 10 44 12 10 +44 12 10 44 12 10 90 10 7 90 10 7 90 10 7 136 24 13 +90 10 7 90 10 7 90 10 7 90 10 7 44 12 10 44 12 10 +44 12 10 44 12 10 44 12 10 2 2 2 2 2 2 1 1 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +1 1 1 1 1 1 2 2 2 1 1 1 1 1 1 1 1 1 +1 1 1 2 2 2 2 2 2 2 2 2 1 1 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 diff --git a/drivers/video/logo/logo_fedoraglossy_clut224.ppm b/drivers/video/logo/logo_fedoraglossy_clut224.ppm new file mode 100644 index 00000000000..276afb7eda0 --- /dev/null +++ b/drivers/video/logo/logo_fedoraglossy_clut224.ppm @@ -0,0 +1,1123 @@ +P3 +80 80 +255 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 1 0 0 1 0 0 1 0 0 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 1 0 4 9 0 12 24 0 16 33 0 26 50 0 31 59 +0 33 61 0 31 59 0 30 56 0 28 53 0 22 43 0 16 33 +0 12 24 0 5 11 0 2 5 0 1 2 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 5 11 0 9 19 0 12 24 0 16 33 +0 25 48 2 43 79 36 91 133 66 107 134 66 107 134 66 107 134 +66 107 134 66 107 134 66 107 134 66 107 134 66 107 134 66 107 134 +9 67 112 2 43 79 0 31 57 0 22 43 0 20 39 0 14 29 +0 5 11 0 2 5 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 +0 9 19 0 22 43 0 38 70 9 67 112 66 107 134 105 133 154 +123 144 162 127 149 166 126 153 173 126 153 173 126 153 173 126 153 173 +126 153 173 126 153 173 126 153 173 126 153 173 126 153 173 126 153 173 +127 149 166 127 149 166 121 141 158 105 133 154 66 107 134 3 53 95 +1 36 66 0 25 48 0 14 29 0 5 11 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 2 5 0 9 19 0 28 53 +9 67 112 66 107 134 121 141 158 126 153 173 126 153 173 126 153 173 +126 153 173 127 149 166 127 149 166 127 149 166 127 149 166 127 149 166 +127 149 166 127 149 166 127 149 166 127 149 166 127 149 166 127 149 166 +127 149 166 127 149 166 127 149 166 127 149 166 127 149 166 127 149 166 +110 135 155 66 107 134 3 53 95 0 28 53 0 16 33 0 4 9 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 5 11 0 20 39 0 34 63 36 91 133 105 133 154 +127 149 166 127 149 166 127 149 166 127 149 166 127 149 166 127 149 166 +127 149 166 127 149 166 127 149 166 127 149 166 127 149 166 127 149 166 +127 149 166 127 149 166 127 149 166 127 149 166 127 149 166 127 149 166 +127 149 166 127 149 166 127 149 166 123 144 162 123 144 162 123 144 162 +127 149 166 127 149 166 121 141 158 105 133 154 9 67 112 0 24 47 +0 9 19 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 16 33 0 34 63 9 67 112 105 133 154 127 149 166 127 149 166 +127 149 166 123 144 162 123 144 162 127 149 166 123 144 162 123 144 162 +123 144 162 123 144 162 123 144 162 123 144 162 123 144 162 123 144 162 +123 144 162 123 144 162 123 144 162 123 144 162 123 144 162 123 144 162 +121 141 158 121 141 158 121 141 158 121 141 158 121 141 158 121 141 158 +121 141 158 121 141 158 121 141 158 121 141 158 121 141 158 86 123 154 +3 53 95 0 22 43 0 7 15 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 14 29 +2 43 79 66 107 134 115 143 164 120 146 166 123 144 162 123 144 162 +123 144 162 123 144 162 123 144 162 120 146 166 121 141 158 121 141 158 +121 141 158 121 141 158 121 141 158 121 141 158 121 141 158 121 141 158 +121 141 158 121 141 158 121 141 158 121 141 158 121 141 158 121 141 158 +121 141 158 121 141 158 121 141 158 121 141 158 121 141 158 121 141 158 +121 141 158 121 141 158 121 141 158 121 141 158 121 141 158 121 141 158 +110 135 155 66 107 134 0 27 51 0 14 29 0 0 2 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 2 5 0 22 43 3 53 95 +86 123 154 115 143 164 114 140 160 114 140 160 114 140 160 114 140 160 +114 140 160 114 140 160 114 140 160 114 140 160 114 140 160 114 140 160 +114 140 160 114 140 160 114 140 160 114 140 160 114 140 160 110 135 155 +110 135 155 114 140 160 110 135 155 110 135 155 110 135 155 110 135 155 +110 135 155 110 135 155 110 135 155 110 135 155 110 135 155 110 135 155 +110 135 155 110 135 155 110 135 155 110 135 155 110 135 155 110 135 155 +110 135 155 121 141 158 66 107 134 0 31 57 0 20 39 0 4 9 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 12 24 0 33 63 3 53 95 86 123 154 +114 140 160 109 137 159 109 137 159 109 137 159 109 137 159 109 137 159 +109 137 159 110 135 155 110 135 155 109 137 159 110 135 155 110 135 155 +110 135 155 110 135 155 109 137 159 110 135 155 110 135 155 110 135 155 +110 135 155 110 135 155 110 135 155 110 135 155 105 133 154 105 133 154 +105 133 154 105 133 154 110 135 155 121 141 158 127 149 166 127 149 166 +121 141 158 110 135 155 105 133 154 105 133 154 105 133 154 105 133 154 +105 133 154 105 133 154 110 135 155 66 107 134 0 33 61 0 20 39 +0 7 15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 14 29 0 40 76 3 53 95 86 123 154 109 137 159 +104 134 157 104 134 157 104 134 157 104 134 157 104 134 157 104 134 157 +104 134 157 104 134 157 104 134 157 104 134 157 105 133 154 105 133 154 +105 133 154 105 133 154 105 133 154 105 133 154 105 133 154 105 133 154 +105 133 154 105 133 154 105 133 154 105 133 154 105 133 154 126 153 173 +158 185 204 198 215 225 227 236 241 240 245 247 240 245 247 240 245 247 +240 245 247 227 236 241 188 208 220 126 153 173 105 133 154 105 133 154 +105 133 154 105 133 154 105 133 154 105 133 154 66 107 134 0 29 54 +0 20 39 0 2 5 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 9 19 0 38 72 0 47 87 66 107 134 100 132 157 95 130 157 +95 130 157 95 130 157 100 132 157 100 132 157 100 132 157 100 132 157 +100 132 157 100 132 157 100 132 157 100 132 157 100 132 157 100 132 157 +100 132 157 100 132 157 100 132 157 100 132 157 100 132 157 95 130 157 +95 130 157 95 130 157 95 130 157 125 160 184 198 215 225 240 245 247 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 249 251 252 175 199 215 105 133 154 +105 133 154 86 123 154 86 123 154 86 123 154 105 133 154 36 91 133 +0 22 43 0 20 39 0 4 9 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 11 +0 38 71 0 45 86 9 67 112 86 123 154 95 130 157 95 130 157 +95 130 157 95 130 157 95 130 157 95 130 157 95 130 157 95 130 157 +95 130 157 95 130 157 95 130 157 95 130 157 95 130 157 95 130 157 +95 130 157 95 130 157 95 130 157 86 123 154 86 123 154 86 123 154 +86 123 154 114 140 160 188 208 220 249 251 252 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 151 182 203 +86 123 154 86 123 154 86 123 154 86 123 154 86 123 154 66 107 134 +1 36 66 0 22 43 0 16 33 0 2 5 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 5 11 0 37 70 +0 49 91 0 51 95 54 103 137 95 130 157 86 123 154 86 123 154 +86 123 154 86 123 154 86 123 154 86 123 154 86 123 154 86 123 154 +86 123 154 86 123 154 86 123 154 86 123 154 86 123 154 86 123 154 +86 123 154 86 123 154 86 123 154 86 123 154 86 123 154 86 123 154 +126 153 173 227 236 241 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 198 215 225 +86 123 154 86 123 154 86 123 154 86 123 154 66 107 134 86 123 154 +36 91 133 0 25 48 0 22 43 0 12 24 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 4 9 0 38 72 0 50 94 +0 51 95 1 56 100 70 116 150 86 123 154 86 123 154 86 123 154 +86 123 154 86 123 154 86 123 154 86 123 154 86 123 154 86 123 154 +86 123 154 86 123 154 86 123 154 86 123 154 86 123 154 86 123 154 +86 123 154 86 123 154 86 123 154 86 123 154 70 116 150 126 153 173 +240 245 247 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 198 215 225 +86 123 154 78 123 153 86 123 154 66 107 134 66 107 134 66 107 134 +66 107 134 0 31 57 0 24 47 0 22 43 0 12 24 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 2 0 39 73 0 51 95 0 53 98 +0 53 98 9 67 112 70 116 150 78 123 153 70 116 150 70 116 150 +70 116 150 70 116 150 78 123 153 78 123 153 78 123 153 78 123 153 +78 123 153 78 123 153 78 123 153 78 123 153 78 123 153 78 123 153 +78 123 153 70 116 150 78 123 153 65 110 142 115 143 164 227 236 241 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 158 185 204 +66 107 134 66 107 134 66 107 134 66 107 134 66 107 134 66 107 134 +66 107 134 1 36 66 0 26 50 0 25 48 0 22 43 0 9 19 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 22 43 0 53 98 0 54 101 0 54 98 +0 53 98 12 74 126 70 116 150 70 116 150 70 116 150 70 116 150 +70 116 150 70 116 150 70 116 150 70 116 150 70 116 150 70 116 150 +70 116 150 70 116 150 70 116 150 70 116 150 70 116 150 70 116 150 +70 116 150 70 116 150 70 116 150 86 123 154 213 228 238 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 188 208 220 78 123 153 +66 107 134 66 107 134 66 107 134 66 107 134 66 107 134 66 107 134 +66 107 134 1 36 66 0 27 51 0 27 51 0 24 47 0 20 39 +0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 2 5 0 42 78 0 54 101 0 55 102 0 55 102 +0 55 102 9 67 112 65 110 142 70 116 150 65 110 142 70 116 150 +70 116 150 65 110 142 65 110 142 70 116 150 70 116 150 65 110 142 +70 116 150 65 110 142 65 110 142 70 116 150 65 110 142 65 110 142 +65 110 142 65 110 142 65 110 142 163 190 208 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 249 251 252 205 221 232 163 190 208 139 173 197 139 173 197 +151 182 203 163 190 208 163 190 208 125 160 184 70 116 150 66 107 134 +66 107 134 66 107 134 66 107 134 66 107 134 66 107 134 66 107 134 +66 107 134 1 36 66 0 28 53 0 28 53 0 27 51 0 22 43 +0 4 9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 32 60 0 54 101 0 57 102 2 58 106 2 58 106 +2 58 106 9 67 112 65 110 142 65 110 142 65 110 142 65 110 142 +65 110 142 65 110 142 65 110 142 65 110 142 58 111 150 65 110 142 +65 110 142 65 110 142 65 110 142 65 110 142 65 110 142 65 110 142 +65 110 142 58 105 140 100 132 157 240 245 247 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +198 215 225 108 139 162 65 110 142 54 103 137 54 103 137 54 103 137 +54 103 137 54 103 137 54 103 137 66 107 134 66 107 134 66 107 134 +66 107 134 66 107 134 66 107 134 66 107 134 66 107 134 66 107 134 +66 107 134 1 36 66 0 29 55 0 29 54 0 28 53 0 26 50 +0 14 29 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 9 19 0 53 98 0 57 102 2 58 106 2 58 106 0 60 110 +0 60 110 1 61 111 44 99 139 56 105 142 56 105 142 56 105 142 +56 105 142 56 105 142 56 105 142 56 105 142 56 105 142 56 105 142 +56 105 142 56 105 142 56 105 142 56 105 142 56 105 142 56 105 142 +56 105 142 50 102 142 175 199 215 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 151 182 203 +54 103 137 54 103 137 54 103 137 54 103 137 54 103 137 54 103 137 +54 103 137 54 103 137 54 103 137 54 103 137 66 107 134 66 107 134 +66 107 134 66 107 134 66 107 134 66 107 134 66 107 134 66 107 134 +36 91 133 0 38 70 0 30 56 0 29 55 0 28 53 0 27 51 +0 24 47 0 14 29 0 0 2 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 35 67 2 58 106 2 58 106 2 58 106 0 60 110 0 60 110 +0 61 112 0 61 112 23 84 135 56 105 142 50 104 143 50 104 143 +50 104 143 50 104 143 50 104 143 50 104 143 50 104 143 50 104 143 +50 104 143 50 104 143 50 104 143 50 104 143 50 102 142 50 102 142 +50 102 142 70 116 150 227 236 241 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 158 185 204 44 99 139 +54 103 137 54 103 137 54 103 137 54 103 137 54 103 137 54 103 137 +54 103 137 54 103 137 36 91 133 36 91 133 36 91 133 54 103 137 +54 103 137 54 103 137 54 103 137 54 103 137 54 103 137 54 103 137 +9 67 112 0 41 75 0 32 60 0 30 56 0 29 54 0 28 53 +0 27 51 0 20 39 0 4 9 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 11 +0 50 95 2 58 106 0 60 110 0 60 110 0 61 112 0 61 112 +1 62 114 1 62 114 5 67 116 42 97 140 50 102 142 50 102 142 +50 102 142 50 102 142 50 102 142 50 102 142 50 102 142 50 102 142 +50 102 142 50 102 142 50 102 142 50 102 142 50 102 142 50 102 142 +38 94 135 117 151 174 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 205 221 232 54 103 137 36 91 133 +38 94 135 38 94 135 38 94 135 36 91 133 36 91 133 36 91 133 +36 91 133 36 91 133 36 91 133 36 91 133 36 91 133 36 91 133 +38 94 135 54 103 137 38 94 135 38 94 135 54 103 137 36 91 133 +0 47 84 0 44 81 1 36 66 0 30 57 0 29 55 0 28 53 +0 27 51 0 22 43 0 9 19 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 20 39 +0 57 102 0 60 110 0 60 110 0 61 112 0 63 115 0 63 115 +0 63 115 0 63 115 0 63 115 12 74 126 42 97 140 42 97 140 +42 97 140 42 97 140 42 97 140 42 97 140 42 97 140 42 97 140 +42 97 140 42 97 140 42 97 140 42 97 140 42 97 140 42 97 140 +37 92 135 151 182 203 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 117 151 174 33 89 133 36 91 133 +36 91 133 36 91 133 36 91 133 36 91 133 36 91 133 36 91 133 +36 91 133 36 91 133 36 91 133 36 91 133 36 91 133 36 91 133 +36 91 133 38 94 135 36 91 133 36 91 133 36 91 133 2 60 104 +0 47 84 0 47 84 0 38 70 0 31 58 0 30 56 0 29 54 +0 28 53 0 25 48 0 16 33 0 2 5 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40 76 +0 60 110 0 61 112 0 63 115 0 63 115 0 64 119 0 64 119 +0 64 119 0 66 119 0 66 119 0 67 125 23 84 135 42 97 140 +42 97 140 39 95 138 42 97 140 37 101 144 37 101 144 42 97 140 +42 97 140 42 97 140 42 97 140 42 97 140 39 95 138 39 95 138 +42 97 140 188 208 220 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 227 236 241 58 105 140 33 89 133 36 91 133 +36 91 133 36 91 133 36 91 133 33 89 133 33 89 133 33 89 133 +33 89 133 33 89 133 33 89 133 33 89 133 33 89 133 33 89 133 +33 89 133 36 91 133 36 91 133 36 91 133 9 67 112 0 50 89 +0 50 89 0 47 84 0 41 75 0 32 60 0 31 58 0 30 56 +0 29 54 0 27 51 0 24 47 0 9 19 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 16 33 2 58 106 +0 61 112 0 63 115 0 63 115 0 64 119 0 64 119 0 66 119 +0 66 119 0 66 119 0 67 125 0 67 125 0 67 125 16 83 138 +39 95 138 39 95 138 37 101 144 37 101 144 37 101 144 39 95 138 +39 95 138 39 95 138 39 95 138 39 95 138 37 92 135 33 89 133 +37 101 144 205 221 232 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 188 208 220 36 91 133 33 89 133 33 89 133 +33 89 133 33 89 133 33 89 133 33 89 133 33 89 133 33 89 133 +33 89 133 33 89 133 33 89 133 9 67 112 9 67 112 9 67 112 +9 67 112 33 89 133 33 89 133 9 67 112 0 50 89 0 50 89 +0 50 89 0 47 84 0 43 79 0 33 61 0 31 59 0 30 56 +0 29 54 0 28 53 0 26 50 0 14 29 0 0 2 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 45 84 0 63 115 +0 63 115 0 64 119 0 64 119 0 66 119 0 67 125 0 67 125 +0 67 125 0 68 127 0 68 127 0 68 127 0 68 127 0 68 127 +13 81 137 23 87 136 23 87 136 23 87 136 23 87 136 23 87 136 +23 87 136 23 87 136 23 87 136 23 87 136 23 87 136 23 87 136 +37 101 144 209 226 237 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 175 199 215 33 89 133 23 84 135 33 89 133 +23 84 135 23 84 135 33 89 133 33 89 133 12 74 126 12 74 126 +12 74 126 9 67 112 9 67 112 9 67 112 9 67 112 9 67 112 +9 67 112 9 67 112 9 67 112 0 55 96 0 55 96 0 50 89 +0 50 89 0 50 89 0 44 81 0 34 63 0 32 60 0 31 58 +0 30 56 0 29 54 0 26 50 0 20 39 0 4 9 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 5 11 0 61 112 0 63 115 +0 63 115 0 64 119 0 66 119 1 68 121 0 67 125 0 67 125 +0 68 127 0 68 127 0 68 127 0 68 127 0 68 127 1 73 132 +1 73 132 6 78 137 16 83 138 19 86 138 19 86 138 19 86 138 +19 86 138 19 86 138 19 86 138 19 86 138 23 87 136 19 86 138 +37 101 144 213 228 238 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 163 190 208 12 74 126 12 74 126 12 74 126 +12 74 126 12 74 126 12 74 126 12 74 126 9 67 112 9 67 112 +9 67 112 9 67 112 9 67 112 9 67 112 9 67 112 9 67 112 +3 53 95 1 56 100 0 59 102 0 55 96 0 55 96 0 55 96 +0 50 89 0 50 89 0 44 81 0 34 63 0 32 60 0 31 58 +0 31 57 0 29 54 0 27 51 0 20 39 0 7 15 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 12 24 0 64 119 0 64 119 +0 64 119 0 66 119 0 67 125 0 67 125 0 68 127 0 68 127 +0 68 127 0 68 127 1 73 132 1 73 132 1 73 132 1 73 132 +1 75 135 1 73 132 0 74 137 8 80 139 16 83 138 19 86 138 +19 86 138 19 86 138 19 86 138 19 86 138 16 83 138 16 83 138 +37 101 144 213 228 238 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 158 185 204 12 74 126 12 74 126 12 74 126 +12 74 126 12 74 126 12 74 126 9 67 112 9 67 112 9 67 112 +9 67 112 9 67 112 9 67 112 9 67 112 4 62 107 3 53 95 +0 46 85 0 55 96 0 59 102 0 59 102 0 55 96 0 55 96 +0 50 89 0 50 89 0 44 81 0 35 64 0 33 61 0 31 59 +0 30 57 0 29 54 0 28 53 0 24 47 0 12 24 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 31 59 0 64 119 0 66 119 +0 66 119 0 67 125 0 67 125 0 68 127 0 68 127 0 68 127 +0 68 127 1 73 132 1 73 132 0 74 137 0 74 137 0 74 137 +0 74 137 0 74 137 1 75 137 0 74 137 1 75 137 6 79 140 +8 80 139 8 80 139 16 83 138 16 83 138 13 81 137 8 80 139 +23 87 136 213 228 238 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 158 185 204 12 74 126 9 72 124 9 72 124 +7 70 121 9 67 112 9 67 112 9 67 112 9 67 112 9 67 112 +9 67 112 4 62 107 2 60 104 3 53 95 0 49 89 0 45 86 +0 48 88 2 60 104 0 59 102 0 59 102 0 55 96 0 55 96 +0 50 89 0 50 89 0 43 79 0 35 64 0 34 63 0 32 60 +0 31 58 0 30 56 0 28 53 0 26 50 0 14 29 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 1 0 49 92 0 66 119 0 66 119 +0 67 125 0 67 125 0 68 127 0 68 127 1 73 132 1 73 132 +1 73 132 1 73 132 1 75 135 0 74 137 0 74 137 1 75 137 +1 75 137 1 75 137 1 75 137 1 75 137 1 75 137 1 75 137 +1 75 137 4 77 138 4 78 138 7 79 141 8 80 139 4 77 138 +19 86 138 213 228 238 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 158 185 204 6 69 123 4 69 121 5 67 116 +9 67 112 9 67 112 9 67 112 9 67 112 9 67 112 4 62 107 +2 60 104 0 54 98 0 50 94 0 49 92 0 48 90 0 46 85 +0 55 96 5 66 110 2 60 104 0 59 102 0 55 96 0 55 96 +0 55 96 0 50 89 0 41 75 0 34 65 0 33 63 0 33 61 +0 31 59 0 29 55 0 29 54 0 27 51 0 20 39 0 5 11 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 2 5 2 58 106 1 68 121 0 67 125 +0 67 125 0 68 127 0 68 127 1 73 132 1 73 132 1 75 135 +0 74 137 0 74 137 1 75 137 1 75 137 4 77 138 4 77 138 +6 78 141 6 78 141 6 78 141 6 78 141 6 78 141 6 78 141 +6 78 141 1 75 137 1 75 137 1 75 137 1 75 137 0 74 137 +16 83 138 213 228 238 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 158 185 204 1 68 121 1 65 118 1 65 118 +4 65 114 1 62 114 1 61 111 0 60 110 2 58 106 0 55 102 +0 54 101 0 53 98 0 51 95 0 50 93 0 48 90 0 52 94 +0 64 112 5 66 110 2 60 104 0 59 102 0 59 102 0 55 96 +0 55 96 0 50 89 0 39 73 0 35 64 0 34 63 0 33 63 +0 32 60 0 30 57 0 29 54 0 28 53 0 22 43 0 9 19 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 5 11 0 64 119 0 66 119 0 67 125 +0 68 127 0 68 127 0 68 127 1 73 132 1 75 135 0 74 137 +0 74 137 1 75 137 1 75 137 4 77 138 4 77 138 6 78 141 +6 78 141 6 78 141 6 78 141 6 78 141 6 78 141 6 78 141 +6 78 141 6 78 141 4 77 138 4 77 138 1 75 137 0 74 137 +16 83 138 209 226 237 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 151 182 203 0 66 119 0 63 115 0 63 115 +1 62 114 0 60 110 0 60 110 2 58 106 0 57 102 0 55 102 +0 54 101 0 54 98 0 51 95 0 49 93 0 52 94 0 64 112 +0 64 112 5 66 110 2 60 104 0 59 102 0 59 102 0 55 96 +0 55 96 0 50 89 0 37 69 0 35 67 0 35 64 0 33 63 +0 32 60 0 30 56 0 29 54 0 28 53 0 24 47 0 12 24 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 7 15 0 67 125 0 67 125 0 68 127 +0 68 127 0 68 127 1 73 132 1 73 132 0 74 137 0 74 137 +1 75 137 1 75 137 4 77 138 6 78 141 6 78 141 6 78 141 +6 78 141 6 78 141 6 78 141 6 78 141 6 78 141 6 78 141 +6 78 141 6 78 141 6 78 141 6 78 141 1 75 137 0 74 137 +7 79 141 209 226 237 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 151 182 203 0 64 119 0 63 115 1 62 114 +0 61 112 0 60 110 0 60 110 2 58 106 0 55 102 0 55 102 +0 54 101 0 53 98 0 51 95 0 57 102 0 64 112 5 67 116 +0 64 112 5 66 110 2 60 104 2 60 104 0 59 102 0 55 96 +0 55 96 0 43 79 0 36 67 0 36 67 0 35 64 0 34 63 +0 33 61 0 31 57 0 29 55 0 28 53 0 24 47 0 7 15 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 7 15 0 67 125 0 67 125 0 68 127 +0 68 127 1 73 132 1 73 132 1 75 135 1 75 137 1 75 137 +1 75 137 1 75 137 6 78 141 6 78 141 6 78 141 6 78 141 +6 78 141 6 78 141 6 78 141 6 78 141 6 78 141 7 79 141 +7 79 141 7 79 141 7 79 141 7 79 141 7 79 141 7 79 141 +37 101 144 213 228 238 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 198 215 225 23 87 136 12 74 126 12 74 126 +12 74 126 9 72 124 9 72 124 9 67 112 2 58 106 0 53 101 +0 57 102 0 60 110 0 64 112 1 68 121 1 68 121 5 67 116 +0 64 112 5 66 110 4 62 107 2 60 104 0 59 102 0 59 102 +0 50 89 0 40 74 0 37 69 0 35 67 0 34 65 0 34 63 +0 33 61 0 31 58 0 30 56 0 29 54 0 25 48 0 4 9 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 4 9 0 67 125 0 67 125 0 68 127 +0 68 127 1 73 132 1 73 132 0 74 137 1 75 137 1 75 137 +4 77 138 6 78 141 6 78 141 6 78 141 6 78 141 6 78 141 +7 79 141 7 79 141 39 124 175 39 124 175 118 157 183 175 199 215 +205 221 232 209 226 237 209 226 237 209 226 237 209 226 237 209 226 237 +209 226 237 249 251 252 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 227 236 241 205 221 232 205 221 232 +205 221 232 205 221 232 205 221 232 198 215 225 151 182 203 49 111 152 +2 73 127 7 77 127 2 73 127 2 73 127 1 68 121 5 67 116 +0 64 112 5 66 110 4 62 107 2 60 104 0 59 102 0 59 102 +0 43 79 0 38 72 0 38 70 0 36 67 0 35 64 0 34 63 +0 33 61 0 31 58 0 30 56 0 29 54 0 25 48 0 5 11 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 1 2 0 64 119 0 68 127 0 68 127 +1 73 132 1 73 132 1 75 135 0 74 137 1 75 137 1 75 137 +6 78 141 6 78 141 6 78 141 7 79 141 7 79 141 39 124 175 +39 124 175 39 124 175 39 124 175 132 167 191 249 251 252 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 227 236 241 +59 119 159 2 73 127 2 73 127 2 73 127 1 68 121 1 68 121 +5 67 116 5 66 110 5 66 110 2 60 104 0 59 102 0 50 89 +0 40 74 0 39 73 0 38 70 0 37 69 1 36 66 0 34 63 +0 32 60 0 31 59 0 30 56 0 29 54 0 25 48 0 7 15 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 1 2 0 64 119 0 68 127 0 68 127 +1 73 132 1 73 132 0 74 137 0 74 137 1 75 137 4 77 138 +6 78 141 6 78 141 7 79 141 39 124 175 39 124 175 39 124 175 +39 124 175 39 124 175 39 124 175 227 236 241 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +175 199 215 13 81 137 2 73 127 2 73 127 1 68 121 1 68 121 +5 67 116 5 66 110 5 66 110 2 60 104 0 52 94 0 42 78 +0 40 74 0 40 74 0 38 71 0 37 69 0 36 67 0 33 63 +0 33 61 0 31 59 0 30 56 0 29 54 0 27 51 0 12 24 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 1 2 0 64 119 0 68 127 1 73 132 +1 73 132 1 75 135 0 74 137 1 75 137 1 75 137 1 75 137 +7 79 141 39 124 175 39 124 175 39 124 175 39 124 175 39 124 175 +39 124 175 39 124 175 66 128 168 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +227 236 241 37 101 144 2 73 127 2 73 127 1 68 121 1 68 121 +5 67 116 0 64 112 5 66 110 0 55 96 0 43 79 0 42 78 +0 40 76 0 40 74 0 38 71 0 37 69 0 36 67 0 34 63 +0 34 63 0 31 59 0 30 56 0 29 54 0 28 53 0 12 24 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 1 2 0 64 119 0 68 127 1 73 132 +1 73 132 1 75 135 0 74 137 1 75 137 1 75 137 7 79 141 +39 124 175 39 124 175 39 124 175 39 124 175 39 124 175 39 124 175 +39 124 175 39 124 175 39 124 175 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +213 228 238 37 101 144 2 73 127 2 73 127 1 68 121 1 68 121 +5 67 116 0 64 112 0 52 94 0 44 82 0 42 78 0 42 78 +0 40 76 0 40 74 0 38 71 0 37 69 0 36 67 0 34 63 +0 34 63 0 31 59 0 30 56 0 29 54 0 27 51 0 12 24 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 1 2 0 64 119 0 68 127 1 73 132 +1 73 132 1 75 135 0 74 137 0 74 137 7 79 141 39 124 175 +39 124 175 39 124 175 39 124 175 39 124 175 39 124 175 39 124 175 +39 124 175 39 124 175 39 124 175 209 226 237 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +151 182 203 7 77 127 2 73 127 2 73 127 1 68 121 1 68 121 +2 60 104 0 50 89 0 45 84 0 44 82 0 43 79 0 42 78 +0 40 76 0 40 74 0 38 71 0 37 69 0 36 67 0 34 63 +0 34 63 0 31 59 0 30 56 0 29 54 0 28 53 0 14 29 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 1 2 0 64 119 0 68 127 1 73 132 +1 73 132 0 74 137 0 74 137 6 78 141 39 124 175 39 124 175 +39 124 175 39 124 175 39 124 175 39 124 175 39 124 175 39 124 175 +39 124 175 39 124 175 39 124 175 39 124 175 213 228 238 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 188 208 220 +37 101 144 2 73 127 2 73 127 1 68 121 0 64 112 0 54 98 +0 49 91 0 47 87 0 46 85 0 45 83 0 43 79 0 42 78 +0 40 76 0 40 74 0 38 71 0 37 69 0 36 67 0 34 63 +0 34 63 0 31 59 0 30 56 0 29 54 0 28 53 0 12 24 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 2 0 67 125 0 68 127 1 73 132 +1 73 132 1 73 132 0 74 137 7 79 141 39 124 175 39 124 175 +39 124 175 39 124 175 39 124 175 39 124 175 39 124 175 39 124 175 +39 124 175 39 124 175 39 124 175 39 124 175 39 124 175 118 157 183 +142 177 202 142 177 202 142 177 202 142 177 202 142 177 202 142 177 202 +188 208 220 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 205 221 232 139 173 197 139 173 197 139 173 197 +132 167 191 132 167 191 132 167 191 125 160 184 83 131 163 7 77 127 +0 64 112 0 64 112 0 57 102 0 53 98 0 49 93 0 48 90 +0 48 88 0 47 87 0 46 85 0 45 83 0 43 79 0 42 78 +0 40 74 0 40 74 0 38 70 0 37 69 0 35 64 0 34 63 +0 32 60 0 31 59 0 30 56 0 29 54 0 27 51 0 12 24 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 1 2 0 67 125 0 68 127 8 76 132 +16 83 138 13 81 137 7 79 141 39 124 175 39 124 175 39 124 175 +39 124 175 39 124 175 39 124 175 39 124 175 39 124 175 39 124 175 +39 124 175 7 79 141 7 79 141 7 79 141 6 78 141 6 78 141 +6 78 141 6 78 141 6 78 141 6 78 141 6 78 141 0 74 137 +19 86 138 227 236 241 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 151 182 203 0 64 119 0 64 119 0 63 115 +0 61 112 0 60 110 0 60 110 0 55 102 0 53 101 0 55 102 +0 55 102 0 54 98 0 53 98 0 51 95 0 50 94 0 49 91 +0 48 88 0 46 85 0 45 84 0 44 82 0 43 79 0 42 78 +0 40 74 0 40 74 0 37 69 0 36 67 0 35 67 0 34 63 +0 33 61 0 31 58 0 30 56 0 29 54 0 25 48 0 7 15 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 1 2 0 67 125 6 74 130 23 87 136 +37 101 144 37 101 144 39 124 175 39 124 175 39 124 175 39 124 175 +39 124 175 39 124 175 39 124 175 39 124 175 39 124 175 7 79 141 +6 78 141 6 78 141 6 78 141 7 79 141 7 79 141 6 78 141 +6 78 141 6 78 141 6 78 141 6 78 141 6 78 141 1 75 137 +7 79 141 209 226 237 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 151 182 203 0 67 125 0 64 119 0 64 119 +0 63 115 0 61 112 0 61 112 0 60 110 2 58 106 0 57 102 +0 55 102 0 56 101 0 53 98 0 50 95 0 49 93 0 49 91 +0 48 88 0 45 86 0 44 83 0 44 81 0 42 78 0 42 78 +0 40 74 0 38 72 0 38 70 0 35 67 0 34 65 0 34 63 +0 33 61 0 31 57 0 30 56 0 28 53 0 24 47 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 1 2 0 64 119 15 82 136 37 101 144 +49 111 152 48 117 162 39 124 175 39 124 175 39 124 175 39 124 175 +39 124 175 39 124 175 39 124 175 39 124 175 7 79 141 6 78 141 +6 78 141 6 78 141 6 78 141 6 78 141 6 78 141 6 78 141 +6 78 141 6 78 141 6 78 141 6 78 141 6 78 141 1 75 137 +16 83 138 213 228 238 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 151 182 203 0 67 125 0 64 119 0 64 119 +0 63 115 1 62 114 0 60 110 0 60 110 2 58 106 0 57 102 +0 55 102 0 54 101 0 53 98 0 51 95 0 50 93 0 48 90 +0 48 88 0 46 85 0 45 83 0 44 81 0 42 78 0 40 76 +0 40 74 0 38 72 0 37 69 0 36 67 0 35 64 0 34 63 +0 33 61 0 31 57 0 29 55 0 27 51 0 24 47 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 2 1 65 118 33 89 133 54 113 152 +72 126 163 66 128 168 66 128 168 39 124 175 39 124 175 39 124 175 +39 124 175 39 124 175 39 124 175 7 79 141 6 78 141 6 78 141 +6 78 141 6 78 141 6 78 141 6 78 141 6 78 141 6 78 141 +6 78 141 6 78 141 6 78 141 6 78 141 6 78 141 0 74 137 +16 83 138 213 228 238 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 158 185 204 0 67 125 0 64 119 0 64 119 +0 63 115 0 61 112 0 60 110 0 60 110 2 58 106 0 57 102 +0 55 102 0 54 101 0 53 98 0 51 95 0 50 93 0 48 90 +0 47 87 0 46 85 0 44 83 0 44 81 0 42 78 0 40 76 +0 40 74 0 38 72 0 37 69 0 36 67 0 35 64 0 33 63 +0 33 61 0 31 57 0 29 55 0 29 54 0 12 24 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 2 5 5 67 116 42 97 140 72 126 163 +83 131 163 118 157 183 83 131 163 66 128 168 39 124 175 39 124 175 +39 124 175 39 124 175 39 124 175 7 79 141 6 78 141 6 78 141 +6 78 141 6 78 141 6 78 141 6 78 141 6 78 141 6 78 141 +6 78 141 6 78 141 6 78 141 6 78 141 1 75 137 0 74 137 +16 83 138 209 226 237 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 151 182 203 0 64 119 0 63 115 0 63 115 +1 62 114 0 60 110 0 60 110 2 58 106 0 57 102 0 55 102 +0 54 101 0 53 98 0 51 95 0 50 93 0 49 91 0 48 88 +0 47 87 0 45 84 0 44 82 0 42 78 0 42 78 0 41 75 +0 38 72 0 38 71 0 37 69 0 35 67 0 34 63 0 33 61 +0 31 59 0 30 57 0 29 54 0 29 54 0 5 11 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 2 5 9 72 124 50 109 150 83 131 163 +117 151 174 118 157 183 118 157 183 66 128 168 39 124 175 39 124 175 +39 124 175 39 124 175 7 79 141 6 78 141 6 78 141 6 78 141 +6 78 141 6 78 141 6 78 141 6 78 141 6 78 141 6 78 141 +6 78 141 4 77 138 4 77 138 4 77 138 1 75 137 0 74 137 +16 83 138 213 228 238 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 151 182 203 0 64 119 0 63 115 0 63 115 +0 61 112 0 60 110 0 60 110 2 58 106 0 57 102 0 55 102 +0 54 101 0 53 98 0 51 95 0 50 93 0 49 91 0 48 88 +0 47 87 0 45 84 0 44 82 0 43 79 0 42 78 0 41 75 +0 39 73 0 38 71 0 36 67 0 35 67 0 34 63 0 33 61 +0 31 59 0 30 56 0 28 53 0 22 43 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 2 9 67 112 58 111 150 107 142 167 +118 157 183 142 177 202 132 167 191 118 157 183 66 128 168 39 124 175 +7 79 141 39 124 175 7 79 141 0 74 137 1 75 137 1 75 137 +1 75 137 1 75 137 1 75 137 1 75 137 4 77 138 1 75 137 +1 75 137 1 75 137 1 75 137 1 75 137 0 74 137 1 73 132 +13 81 137 209 226 237 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 151 182 203 0 64 119 1 62 114 0 61 112 +0 60 110 0 60 110 2 58 106 0 57 102 0 55 102 0 54 101 +0 53 98 0 53 98 0 50 93 0 49 91 0 48 88 0 47 87 +0 46 85 0 44 82 0 43 79 0 42 78 0 40 76 0 40 74 +0 38 71 0 37 69 0 35 67 0 35 64 0 34 63 0 32 60 +0 31 58 0 30 56 0 26 50 0 12 24 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 3 53 95 68 118 153 107 142 167 +132 167 191 151 182 203 142 177 202 132 167 191 66 128 168 39 124 175 +7 79 141 7 79 141 7 79 141 0 74 137 0 74 137 1 75 137 +1 75 137 1 75 137 1 75 137 1 75 137 1 75 137 1 75 137 +1 75 137 0 74 137 0 74 137 0 74 137 1 73 132 1 73 132 +13 81 137 209 226 237 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 151 182 203 0 63 115 0 61 112 0 60 110 +0 60 110 2 58 106 2 58 106 0 55 102 0 54 101 0 53 98 +0 53 98 0 51 95 0 49 92 0 48 90 0 47 87 0 46 85 +0 45 84 0 44 81 0 42 78 0 42 78 0 40 74 0 40 74 +0 38 70 0 37 69 1 36 66 0 34 63 0 33 61 0 31 59 +0 30 57 0 29 54 0 22 43 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 3 53 95 68 118 153 117 151 174 +151 182 203 175 199 215 163 190 208 142 177 202 118 157 183 39 124 175 +39 124 175 7 79 141 7 79 141 1 73 132 0 74 137 0 74 137 +0 74 137 0 74 137 1 75 137 1 75 137 0 74 137 0 74 137 +0 74 137 1 75 135 1 75 135 0 74 137 1 73 132 0 68 127 +16 83 138 227 236 241 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 142 177 202 1 62 114 0 61 112 0 60 110 +0 60 110 2 58 106 2 58 106 0 55 102 0 54 101 0 53 98 +0 53 98 0 51 95 0 50 93 0 48 90 0 47 87 0 46 85 +0 45 84 0 44 81 0 42 78 0 42 78 0 40 74 0 38 72 +0 38 70 0 37 69 0 35 64 0 34 63 0 33 61 0 31 59 +0 31 57 0 29 55 0 14 29 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 1 9 67 112 68 118 153 118 157 183 +158 185 204 188 208 220 188 208 220 151 182 203 118 157 183 66 128 168 +39 124 175 7 79 141 6 79 140 0 68 127 1 73 132 1 73 132 +1 73 132 1 73 132 1 75 135 1 75 135 0 74 137 1 73 132 +1 73 132 1 73 132 1 73 132 1 73 132 0 68 127 0 67 125 +19 86 138 240 245 247 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 132 167 191 2 58 106 0 60 110 0 60 110 +2 58 106 2 58 106 0 57 102 0 54 101 0 53 98 0 53 98 +0 51 95 0 50 93 0 48 90 0 47 87 0 46 85 0 45 84 +0 44 82 0 43 79 0 42 78 0 41 75 0 39 73 0 38 71 +0 37 69 0 36 67 0 34 63 0 33 61 0 32 60 0 31 58 +0 30 56 0 27 51 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 1 2 12 74 126 68 118 153 118 157 183 +163 190 208 205 221 232 205 221 232 175 199 215 139 173 197 66 128 168 +39 124 175 7 79 141 7 79 141 1 73 132 0 68 127 1 73 132 +1 73 132 1 73 132 1 73 132 1 73 132 1 73 132 1 73 132 +1 73 132 1 73 132 0 68 127 0 68 127 0 68 127 0 64 119 +77 129 164 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 107 142 167 0 53 101 0 60 110 2 58 106 +2 58 106 0 57 102 0 55 102 0 54 101 0 53 98 0 51 95 +0 51 95 0 50 93 0 48 90 0 47 87 0 46 85 0 45 83 +0 44 81 0 42 78 0 42 78 0 40 74 0 38 72 0 38 70 +0 37 69 0 36 67 0 34 63 0 33 61 0 31 59 0 30 56 +0 29 54 0 16 33 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 1 12 74 126 70 116 150 120 155 180 +163 190 208 209 226 237 213 228 238 188 208 220 142 177 202 83 131 163 +39 124 175 7 79 141 7 79 141 1 75 135 0 68 127 0 68 127 +0 68 127 0 68 127 0 68 127 0 68 127 0 68 127 0 68 127 +0 68 127 0 68 127 0 68 127 0 68 127 0 67 125 0 64 119 +175 199 215 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 249 251 252 68 118 153 0 55 102 2 58 106 2 58 106 +0 55 102 0 55 102 0 54 101 0 53 98 0 51 95 0 50 94 +0 49 92 0 48 90 0 47 87 0 46 85 0 45 83 0 44 81 +0 43 79 0 42 78 0 40 74 0 39 73 0 38 70 0 37 69 +0 36 67 0 35 64 0 33 63 0 32 60 0 31 58 0 29 54 +0 22 43 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 1 12 74 126 70 116 150 120 155 180 +163 190 208 213 228 238 240 245 247 198 215 225 142 177 202 118 157 183 +39 124 175 7 79 141 7 79 141 6 79 140 0 67 125 0 67 125 +0 67 125 0 67 125 0 68 127 0 68 127 0 68 127 0 67 125 +0 67 125 0 67 125 0 67 125 0 67 125 1 62 114 69 126 163 +240 245 247 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 227 236 241 12 74 126 2 58 106 2 58 106 0 57 102 +0 56 101 0 54 101 0 53 98 0 51 95 0 51 95 0 50 93 +0 48 90 0 48 88 0 46 85 0 45 84 0 44 82 0 43 79 +0 42 78 0 40 76 0 40 74 0 38 71 0 37 69 0 36 67 +0 35 67 0 35 64 0 33 61 0 31 59 0 30 56 0 27 51 +0 9 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 1 9 67 112 56 105 142 117 151 174 +158 185 204 209 226 237 240 245 247 198 215 225 151 182 203 118 157 183 +49 121 167 7 79 141 7 79 141 7 79 141 4 78 138 0 66 119 +0 66 119 1 68 121 0 67 125 0 67 125 0 67 125 0 67 125 +0 67 125 0 66 119 0 66 119 0 63 115 39 95 138 213 228 238 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 158 185 204 0 53 101 2 58 106 0 55 102 0 55 102 +0 54 101 0 53 98 0 53 98 0 50 94 0 50 93 0 49 91 +0 48 88 0 47 87 0 46 85 0 44 83 0 44 81 0 42 78 +0 42 78 0 40 74 0 39 73 0 38 70 0 36 67 0 35 67 +0 34 65 0 34 63 0 32 60 0 30 57 0 29 54 0 16 33 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 1 4 62 107 54 103 137 107 142 167 +151 182 203 198 215 225 227 236 241 198 215 225 158 185 204 118 157 183 +49 121 167 7 79 141 7 79 141 7 79 141 7 79 141 4 78 138 +0 66 119 0 63 115 0 64 119 0 64 119 0 64 119 0 64 119 +0 63 115 1 62 114 0 60 110 58 111 150 205 221 232 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +249 251 252 65 110 142 0 53 101 0 55 102 0 54 101 0 54 101 +0 53 98 0 53 98 0 51 95 0 50 93 0 48 90 0 48 88 +0 47 87 0 46 85 0 45 83 0 44 81 0 43 79 0 42 78 +0 41 75 0 39 73 0 38 70 0 37 69 0 36 67 0 35 64 +0 34 63 0 33 61 0 31 58 0 30 56 0 24 47 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 1 0 57 102 36 91 133 95 130 157 +132 167 191 175 199 215 205 221 232 198 215 225 158 185 204 118 157 183 +58 122 163 19 86 138 6 79 140 6 79 140 6 79 140 6 79 140 +4 78 138 13 81 137 7 73 126 1 65 118 0 63 115 0 66 119 +12 74 126 44 99 139 139 173 197 240 245 247 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +175 199 215 4 62 107 0 53 101 0 54 101 0 53 98 0 53 98 +0 51 95 0 50 94 0 50 93 0 48 90 0 47 87 0 47 87 +0 46 85 0 45 84 0 44 81 0 42 78 0 42 78 0 40 74 +0 40 74 0 38 71 0 37 69 0 36 67 0 35 64 0 34 63 +0 33 63 0 31 59 0 29 55 0 26 50 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 1 2 0 53 98 33 89 133 78 123 153 +120 155 180 158 185 204 188 208 220 175 199 215 151 182 203 118 157 183 +58 122 163 19 86 138 6 79 140 6 79 140 6 79 140 66 128 168 +163 190 208 198 215 225 188 208 220 175 199 215 163 190 208 175 199 215 +198 215 225 249 251 252 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 240 245 247 +44 99 139 0 53 98 0 54 101 0 53 98 0 53 98 0 51 95 +0 50 94 0 50 93 0 49 91 0 48 88 0 47 87 0 45 86 +0 45 84 0 44 82 0 43 79 0 42 78 0 40 76 0 40 74 +0 38 72 0 38 70 0 36 67 0 35 67 0 34 63 0 33 63 +0 32 60 0 31 58 0 27 51 0 7 15 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 2 0 51 95 9 67 112 65 110 142 +107 142 167 139 173 197 163 190 208 163 190 208 142 177 202 118 157 183 +53 120 163 19 86 138 4 78 138 4 78 138 77 129 164 240 245 247 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 107 142 167 +0 50 95 0 54 101 0 53 98 0 51 95 0 51 95 0 50 93 +0 49 92 0 48 90 0 48 88 0 47 87 0 46 85 0 45 83 +0 44 82 0 43 79 0 42 78 0 40 76 0 40 74 0 38 72 +0 38 70 0 36 67 1 36 66 0 35 64 0 34 63 0 33 61 +0 30 57 0 25 48 0 7 15 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 1 2 0 50 94 4 62 107 54 103 137 +95 130 157 126 153 173 139 173 197 139 173 197 125 160 184 107 142 167 +53 120 163 8 80 139 2 76 135 19 86 138 198 215 225 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 139 173 197 1 56 100 +0 51 95 0 53 98 0 51 95 0 51 95 0 50 93 0 49 91 +0 48 90 0 48 88 0 47 87 0 46 85 0 45 83 0 44 82 +0 43 79 0 42 78 0 40 76 0 40 74 0 39 73 0 38 71 +0 37 69 0 35 67 0 35 64 0 34 63 0 33 61 0 31 59 +0 25 48 0 5 11 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 2 0 47 87 2 54 96 33 89 133 +70 116 150 107 142 167 126 153 173 125 160 184 117 151 174 86 123 154 +49 111 152 8 80 139 2 73 127 37 101 144 227 236 241 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 151 182 203 4 62 107 0 50 95 +0 51 95 0 51 95 0 50 93 0 49 92 0 49 91 0 48 88 +0 47 87 0 46 85 0 46 85 0 44 83 0 44 81 0 43 79 +0 42 78 0 42 78 0 40 74 0 38 72 0 38 71 0 37 69 +0 37 69 0 35 64 0 34 63 0 33 63 0 31 58 0 26 50 +0 4 9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 1 0 42 78 0 49 93 9 67 112 +54 103 137 86 123 154 107 142 167 115 143 164 104 134 157 70 116 150 +36 91 133 7 77 127 2 73 127 19 86 138 209 226 237 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 240 245 247 120 155 180 1 56 100 0 50 94 0 51 95 +0 51 95 0 50 94 0 49 91 0 48 90 0 48 88 0 47 87 +0 46 85 0 46 85 0 45 84 0 44 81 0 43 79 0 42 78 +0 42 78 0 41 75 0 39 73 0 38 71 0 38 70 0 37 69 +0 36 67 0 34 63 0 33 63 0 31 59 0 28 53 0 5 11 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 40 74 0 48 90 3 53 95 +36 91 133 66 107 134 86 123 154 95 130 157 86 123 154 66 107 134 +12 74 126 0 57 102 0 64 112 2 73 127 118 157 183 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +188 208 220 58 105 140 0 49 93 0 49 92 0 50 93 0 49 92 +0 49 91 0 48 90 0 47 87 0 47 87 0 46 85 0 45 84 +0 44 83 0 44 82 0 44 81 0 42 78 0 42 78 0 40 76 +0 40 74 0 38 72 0 38 70 0 37 69 0 36 67 0 35 67 +0 34 63 0 33 61 0 31 59 0 20 39 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 37 70 0 47 87 0 48 90 +9 67 112 38 94 135 66 107 134 70 116 150 65 110 142 54 103 137 +9 67 112 0 51 95 0 51 95 0 56 101 5 66 110 125 160 184 +227 236 241 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 240 245 247 188 208 220 86 123 154 +2 60 104 0 45 86 0 50 93 0 49 92 0 49 91 0 48 90 +0 48 88 0 47 87 0 46 85 0 46 85 0 45 84 0 44 82 +0 44 81 0 43 79 0 42 78 0 40 76 0 40 74 0 40 74 +0 38 72 0 38 70 0 36 67 1 36 66 0 35 64 0 34 63 +0 33 63 0 29 55 0 9 19 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 28 53 0 46 85 0 47 87 +3 53 95 9 67 112 36 91 133 54 103 137 54 103 137 33 89 133 +2 60 104 0 49 93 0 50 93 0 50 94 0 49 92 0 50 94 +36 91 133 108 139 162 151 182 203 188 208 220 198 215 225 198 215 225 +175 199 215 139 173 197 95 130 157 36 91 133 0 50 94 0 45 86 +0 48 90 0 49 91 0 49 91 0 48 90 0 48 88 0 47 87 +0 46 85 0 46 85 0 45 84 0 45 83 0 44 81 0 43 79 +0 42 78 0 42 78 0 42 78 0 40 74 0 39 73 0 38 72 +0 38 70 0 37 69 0 35 67 0 35 64 0 33 63 0 24 47 +0 9 19 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 4 9 0 34 65 0 44 83 +0 46 85 3 53 95 9 67 112 33 89 133 33 89 133 9 67 112 +0 49 91 0 48 90 0 49 91 0 49 92 0 50 93 0 49 92 +0 47 87 0 45 86 0 49 92 3 53 95 3 53 95 2 54 96 +0 52 94 0 48 90 0 44 83 0 45 86 0 48 90 0 48 90 +0 48 88 0 48 88 0 47 87 0 46 85 0 46 85 0 46 85 +0 45 83 0 45 83 0 44 81 0 43 79 0 42 78 0 42 78 +0 40 76 0 40 74 0 40 74 0 38 72 0 38 70 0 37 69 +0 36 67 0 36 67 0 35 67 0 31 59 0 14 29 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 5 11 0 33 61 +0 42 78 0 46 85 3 53 95 4 62 107 4 62 107 3 53 95 +0 47 87 0 48 88 0 48 88 0 48 90 0 48 90 0 48 90 +0 48 90 0 48 90 0 49 91 0 48 90 0 48 90 0 48 88 +0 48 90 0 48 90 0 48 88 0 48 90 0 47 87 0 47 87 +0 47 87 0 47 87 0 46 85 0 46 85 0 45 84 0 44 83 +0 44 81 0 44 81 0 43 79 0 42 78 0 42 78 0 40 76 +0 40 74 0 39 73 0 38 72 0 38 70 0 37 69 0 35 67 +0 34 65 0 29 55 0 14 29 0 2 5 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 5 +0 27 51 0 40 76 0 44 82 0 47 84 0 47 87 0 45 84 +0 46 85 0 46 85 0 46 85 0 47 87 0 47 87 0 47 87 +0 47 87 0 47 87 0 47 87 0 47 87 0 47 87 0 47 87 +0 46 85 0 45 86 0 45 86 0 46 85 0 46 85 0 45 84 +0 45 83 0 44 82 0 45 83 0 44 81 0 44 81 0 42 78 +0 42 78 0 42 78 0 40 76 0 40 74 0 40 74 0 39 73 +0 39 73 0 39 73 0 38 72 0 35 67 0 29 54 0 12 24 +0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 5 11 0 14 29 0 22 43 0 27 51 0 26 50 +0 24 47 0 29 54 0 31 58 0 36 67 0 36 67 0 40 74 +0 40 74 0 40 74 0 44 81 0 46 85 0 47 87 0 47 87 +0 47 87 0 47 87 0 47 87 0 47 87 0 45 86 0 46 85 +0 45 84 0 45 84 0 45 84 0 44 83 0 44 81 0 43 79 +0 43 79 0 42 78 0 41 75 0 38 71 0 36 67 0 34 63 +0 16 33 0 7 15 0 5 11 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 diff --git a/drivers/video/logo/logo_fedorasimple_clut224.ppm b/drivers/video/logo/logo_fedorasimple_clut224.ppm new file mode 100644 index 00000000000..b9ba699fc9d --- /dev/null +++ b/drivers/video/logo/logo_fedorasimple_clut224.ppm @@ -0,0 +1,1123 @@ +P3 +80 80 +255 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 1 2 0 6 11 0 11 21 0 16 30 +0 21 39 0 25 46 0 27 49 0 27 50 0 27 49 0 25 46 +0 21 39 0 16 30 0 11 21 0 6 11 0 1 2 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 9 18 +0 22 40 0 32 61 0 41 77 0 46 87 0 50 92 0 51 95 +0 52 95 0 52 95 0 52 95 0 52 95 0 52 95 0 52 95 +0 52 95 0 51 95 0 50 92 0 46 87 0 41 77 0 32 61 +0 22 40 0 9 18 0 1 2 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 10 18 0 26 49 0 41 77 0 49 90 +0 52 96 0 52 95 0 51 94 0 50 93 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 93 0 51 94 0 52 95 +0 52 96 0 49 90 0 41 75 0 26 49 0 10 18 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 +0 17 32 0 37 70 0 49 90 0 52 96 0 51 94 0 50 92 +0 50 91 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 91 0 50 92 0 51 94 0 52 96 0 49 90 0 37 70 +0 17 32 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 1 2 0 19 35 0 41 77 +0 51 94 0 51 95 0 50 92 0 49 91 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 49 91 0 50 92 0 51 95 +0 50 93 0 41 75 0 18 34 0 1 2 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 13 24 0 37 71 0 51 95 0 51 94 +0 50 92 0 49 91 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 49 91 +0 50 92 0 51 94 0 51 95 0 37 71 0 13 24 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 3 6 0 29 53 0 49 91 0 51 95 0 50 92 0 49 91 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 49 91 0 50 92 0 51 95 0 49 91 0 29 53 +0 3 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12 22 +0 41 77 0 51 96 0 50 92 0 49 91 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 49 91 +0 47 90 0 47 89 0 46 89 0 47 89 0 48 90 0 49 91 +0 50 92 0 50 92 0 50 92 0 49 91 0 50 92 0 52 96 +0 41 77 0 12 22 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 20 37 0 47 89 +0 51 94 0 50 91 0 50 91 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 49 91 0 46 88 0 41 85 0 40 84 0 47 90 +7 56 98 13 61 101 13 61 101 11 59 100 0 50 93 0 41 85 +0 41 85 0 47 89 0 49 91 0 50 92 0 50 92 0 49 91 +0 51 95 0 47 89 0 20 37 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 1 0 26 50 0 50 93 0 50 93 +0 49 91 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 49 91 +0 43 86 0 43 86 17 64 103 62 116 154 144 169 189 190 205 217 +217 226 233 227 235 240 232 238 242 221 230 237 194 209 220 144 169 189 +62 116 154 1 57 102 0 45 88 0 47 88 0 49 91 0 50 92 +0 49 91 0 50 93 0 50 93 0 27 49 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 1 2 0 30 57 0 51 96 0 50 92 0 49 91 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 45 88 0 43 86 +48 88 122 156 179 196 232 238 242 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 189 213 227 24 107 158 0 65 113 0 50 92 0 47 89 +0 49 91 0 50 92 0 50 92 0 51 95 0 30 57 0 1 2 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 1 0 30 57 0 51 95 0 50 92 0 50 91 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 49 91 0 41 84 17 64 103 156 179 196 +247 250 251 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 196 216 229 0 110 172 0 93 151 0 63 110 +0 46 88 0 49 90 0 50 92 0 50 92 0 51 96 0 31 59 +0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 29 53 0 51 95 0 50 92 0 50 91 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 49 91 0 40 84 59 105 139 221 230 237 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 81 154 196 0 104 168 0 107 168 +0 78 129 0 49 91 0 48 89 0 50 92 0 50 92 0 52 95 +0 29 53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 23 43 +0 51 94 0 50 92 0 50 91 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 48 91 0 40 84 89 138 172 247 250 251 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 132 174 200 0 102 165 0 108 169 +0 110 172 0 88 143 0 50 93 0 48 90 0 50 92 0 50 92 +0 51 94 0 23 43 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 14 27 0 49 91 +0 50 92 0 49 91 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 49 91 +0 40 84 79 130 164 252 253 254 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 81 154 196 0 102 165 0 107 168 +0 108 169 0 110 172 0 89 144 0 49 92 0 48 90 0 50 92 +0 50 92 0 49 91 0 14 27 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 6 11 0 44 82 0 50 93 +0 49 91 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 49 91 0 40 84 +59 105 139 247 250 251 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 207 222 232 11 106 162 0 105 167 0 108 169 +0 108 168 0 108 169 0 110 172 0 86 140 0 47 88 0 49 91 +0 50 91 0 50 93 0 45 83 0 6 11 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 35 66 0 51 95 0 49 91 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 44 87 17 64 103 +221 230 237 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 246 249 251 241 246 248 247 250 251 255 255 255 255 255 255 +249 251 253 189 213 227 27 123 177 0 103 165 0 108 168 0 108 169 +0 108 169 0 107 168 0 108 169 0 108 170 0 70 118 0 46 88 +0 49 92 0 49 91 0 51 95 0 34 64 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 19 35 0 51 94 0 49 91 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 49 91 0 41 85 144 169 189 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 202 218 229 133 160 181 +59 105 139 42 85 121 22 79 121 42 85 121 59 105 139 73 134 171 +51 128 174 0 109 171 0 105 166 0 108 169 0 108 169 0 108 169 +0 108 169 0 108 169 0 107 168 0 109 170 0 100 158 0 53 96 +0 48 90 0 50 92 0 49 92 0 51 94 0 19 35 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 4 9 0 43 81 0 50 93 0 50 91 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 43 86 42 85 121 246 249 251 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 232 238 242 79 130 164 4 52 93 0 40 84 +0 42 85 0 44 87 0 45 88 0 44 87 0 42 85 0 41 85 +1 57 102 0 92 148 0 110 171 0 108 169 0 108 168 0 108 169 +0 108 169 0 108 169 0 108 169 0 107 168 0 110 171 0 78 129 +0 46 87 0 49 91 0 50 91 0 50 93 0 43 81 0 4 9 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 27 50 0 51 95 0 49 91 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 49 91 0 41 85 144 169 189 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 217 227 234 45 87 122 0 39 81 0 47 89 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 49 91 +0 47 88 0 49 91 0 86 140 0 109 171 0 107 169 0 108 169 +0 108 169 0 108 169 0 108 169 0 108 169 0 108 169 0 101 162 +0 52 96 0 48 90 0 50 92 0 49 91 0 51 95 0 27 50 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 6 11 0 47 86 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 45 88 17 64 103 227 235 240 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +236 240 243 45 87 122 0 40 84 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 48 89 0 48 90 0 88 143 0 109 171 0 107 168 +0 108 169 0 108 169 0 108 169 0 108 169 0 107 168 0 109 171 +0 70 118 0 47 88 0 50 92 0 50 92 0 50 93 0 47 86 +0 6 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 27 50 0 52 95 0 49 91 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 41 84 59 105 139 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +98 145 177 0 39 81 0 49 91 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 49 91 0 47 89 0 53 98 0 101 162 0 108 170 +0 108 169 0 108 169 0 108 169 0 108 169 0 108 169 0 110 171 +0 86 140 0 47 88 0 49 91 0 50 92 0 49 91 0 51 95 +0 26 50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 7 +0 44 84 0 50 93 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 49 91 0 40 84 133 160 181 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 217 226 233 +7 56 98 0 46 88 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 49 91 0 46 87 0 78 129 0 110 171 +0 107 168 0 108 169 0 108 169 0 108 169 0 108 169 0 108 170 +0 98 155 0 50 93 0 49 90 0 50 92 0 50 92 0 50 93 +0 44 82 0 3 7 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 20 37 +0 51 95 0 49 91 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 48 90 0 44 87 174 198 214 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 133 160 181 +0 40 84 0 49 91 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 47 89 1 57 102 0 105 166 +0 108 169 0 108 169 0 108 169 0 108 169 0 108 169 0 107 169 +0 103 163 0 56 101 0 48 90 0 50 92 0 50 92 0 49 91 +0 52 95 0 20 37 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 37 70 +0 51 94 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 48 90 0 48 91 202 218 229 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 62 116 154 +0 40 84 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 48 90 0 51 93 0 98 155 +0 108 170 0 108 169 0 108 169 0 108 169 0 108 169 0 108 168 +0 107 168 0 62 109 0 48 89 0 50 92 0 50 92 0 50 92 +0 51 94 0 37 70 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 8 14 0 48 89 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 47 89 4 52 93 217 226 233 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 48 88 122 +0 42 85 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 49 91 0 48 90 0 92 148 +0 109 171 0 108 169 0 108 169 0 108 169 0 108 169 0 108 169 +0 108 169 0 64 111 0 47 88 0 50 92 0 50 92 0 50 92 +0 50 92 0 47 89 0 8 14 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 21 39 0 52 95 +0 49 91 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 46 90 7 56 98 220 228 234 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 48 88 122 +0 43 86 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 49 91 0 48 90 0 92 148 +0 109 171 0 108 169 0 108 169 0 108 169 0 108 169 0 108 169 +0 108 169 0 64 111 0 47 88 0 50 92 0 50 92 0 50 92 +0 49 91 0 52 95 0 21 39 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 34 64 0 51 94 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 47 90 7 56 98 220 228 234 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 48 88 122 +0 43 86 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 48 90 0 51 93 0 98 155 +0 108 170 0 108 169 0 108 169 0 108 169 0 108 169 0 108 168 +0 107 168 0 62 109 0 48 89 0 50 92 0 50 92 0 50 92 +0 50 92 0 51 94 0 34 62 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 2 4 0 43 81 0 50 93 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 47 90 7 56 98 220 228 234 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 48 88 122 +0 43 86 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 47 89 1 57 102 0 105 166 +0 108 169 0 108 169 0 108 169 0 108 169 0 108 169 0 107 169 +0 103 165 0 57 101 0 48 90 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 93 0 43 81 0 2 4 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 10 19 0 48 90 0 49 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 47 90 7 56 98 220 228 234 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 48 88 122 +0 43 86 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 49 91 0 46 87 0 76 127 0 109 171 +0 107 168 0 108 169 0 108 169 0 108 169 0 108 169 0 108 170 +0 99 157 0 51 93 0 49 90 0 50 92 0 50 92 0 50 92 +0 50 92 0 49 92 0 48 90 0 9 18 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 17 32 0 51 95 0 50 91 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 47 90 7 56 98 220 228 234 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 48 88 122 +0 43 86 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 49 91 0 48 89 0 53 96 0 100 158 0 108 170 +0 108 169 0 108 169 0 108 169 0 108 169 0 108 169 0 109 171 +0 86 140 0 47 88 0 49 91 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 91 0 51 95 0 17 32 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 25 47 0 52 95 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 47 90 7 56 98 220 228 234 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 48 88 122 +0 43 86 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 48 90 0 48 89 0 86 140 0 109 171 0 107 168 +0 108 169 0 108 169 0 108 169 0 108 169 0 107 168 0 109 171 +0 70 118 0 47 88 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 52 95 0 25 46 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 31 59 0 51 95 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 47 90 7 56 98 220 228 234 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 48 88 122 +0 43 86 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 49 91 +0 47 89 0 48 89 0 78 129 0 109 170 0 108 169 0 108 169 +0 108 169 0 108 169 0 108 169 0 108 169 0 108 169 0 101 162 +0 53 96 0 48 90 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 51 95 0 31 59 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 35 66 0 51 94 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 49 91 0 49 91 0 49 91 +0 48 90 0 47 89 0 47 89 0 47 89 0 47 89 0 47 89 +0 47 89 0 44 87 4 54 96 220 228 234 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 42 85 121 +0 40 84 0 47 89 0 47 89 0 47 89 0 47 89 0 47 89 +0 47 89 0 48 90 0 49 90 0 48 90 0 47 88 0 46 87 +0 57 101 0 89 144 0 109 171 0 108 169 0 107 168 0 108 169 +0 108 169 0 108 169 0 108 169 0 107 168 0 110 171 0 78 129 +0 47 88 0 49 91 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 51 94 0 35 66 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 41 75 0 50 93 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 49 91 +0 48 90 0 47 88 0 47 88 0 49 90 0 51 94 0 48 92 +0 49 93 10 58 99 13 61 101 13 61 101 13 61 101 13 61 101 +13 61 101 11 59 100 17 64 103 220 228 234 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 133 160 181 +13 56 97 13 61 101 13 61 101 13 61 101 13 61 101 13 61 101 +13 61 101 0 52 95 0 48 92 1 55 99 0 65 113 0 86 140 +0 103 163 0 110 171 0 108 169 0 107 168 0 108 169 0 108 169 +0 108 169 0 108 169 0 107 168 0 109 170 0 101 162 0 53 96 +0 48 89 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 93 0 41 75 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 42 79 0 49 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 49 91 0 48 89 0 47 89 +1 55 99 0 70 118 0 86 140 0 92 148 0 93 151 51 128 174 +174 198 214 221 230 237 229 236 240 229 235 240 229 235 240 229 235 240 +229 235 240 229 235 240 229 236 240 250 252 253 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +232 238 242 229 235 240 229 235 240 229 235 240 229 235 240 229 236 240 +227 235 240 189 213 227 81 154 196 0 101 162 0 108 169 0 110 172 +0 108 170 0 107 168 0 108 169 0 108 169 0 108 169 0 108 169 +0 108 169 0 108 168 0 108 169 0 108 170 0 70 118 0 46 87 +0 49 91 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 49 92 0 42 79 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 43 81 0 50 93 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 48 89 0 48 89 0 62 109 0 86 140 +0 103 163 0 110 171 0 110 172 0 105 167 51 128 174 239 246 249 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 132 174 200 0 102 165 0 107 168 +0 108 169 0 108 169 0 108 169 0 108 169 0 108 169 0 108 169 +0 108 168 0 107 169 0 110 172 0 86 140 0 47 89 0 49 91 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 93 0 43 81 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 49 91 0 46 88 0 56 101 0 86 140 0 107 168 0 110 172 +0 108 170 0 108 169 0 105 167 0 107 168 196 216 229 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 239 246 249 27 123 177 0 105 167 +0 108 169 0 108 169 0 108 169 0 108 169 0 108 169 0 107 168 +0 108 169 0 110 172 0 89 144 0 50 92 0 48 90 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 49 92 0 42 81 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 49 91 +0 47 88 0 70 118 0 103 163 0 110 172 0 108 169 0 107 168 +0 108 169 0 108 169 0 105 167 27 123 177 241 246 248 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 81 154 196 0 102 165 +0 108 169 0 108 169 0 108 169 0 108 169 0 107 168 0 108 169 +0 110 172 0 88 143 0 50 93 0 48 90 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 93 0 41 77 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 49 91 0 47 88 +0 76 127 0 108 169 0 109 170 0 107 168 0 108 169 0 108 169 +0 108 169 0 108 169 0 105 167 27 123 177 241 246 248 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 81 154 196 0 102 165 +0 108 169 0 108 169 0 107 168 0 108 169 0 109 171 0 107 168 +0 78 129 0 49 91 0 48 89 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 51 94 0 37 70 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 50 92 +0 50 92 0 50 92 0 50 92 0 49 91 0 47 88 0 76 127 +0 109 171 0 108 169 0 107 168 0 108 169 0 108 169 0 108 169 +0 108 169 0 108 169 0 107 168 0 107 168 196 216 229 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 239 246 249 27 123 177 0 105 167 +0 108 169 0 108 169 0 110 171 0 109 171 0 94 151 0 63 110 +0 46 88 0 49 90 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 51 94 0 34 62 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 50 92 +0 50 92 0 50 92 0 49 91 0 46 88 0 70 118 0 108 170 +0 108 169 0 107 168 0 108 169 0 108 169 0 108 169 0 108 169 +0 108 169 0 108 169 0 107 168 0 103 165 51 128 174 239 246 249 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 132 174 200 0 104 168 0 109 172 +0 110 172 0 105 167 0 92 148 0 70 118 0 49 92 0 47 89 +0 49 91 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 52 95 0 28 52 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 50 92 +0 50 92 0 50 92 0 47 89 0 57 101 0 103 163 0 108 170 +0 107 168 0 108 169 0 108 169 0 108 169 0 108 169 0 108 169 +0 107 168 0 108 169 0 110 171 0 109 171 0 101 162 51 128 174 +174 198 214 221 230 237 229 236 240 229 235 240 229 235 240 229 235 240 +229 235 240 229 235 240 250 252 253 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 232 238 242 +229 235 240 229 235 240 229 235 240 229 235 240 229 235 240 229 236 240 +227 235 240 189 213 227 81 154 196 0 98 155 0 93 151 0 86 140 +0 72 121 1 57 102 0 48 90 0 47 88 0 49 91 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 52 95 0 20 37 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 50 92 +0 50 92 0 49 91 0 48 89 0 88 143 0 110 171 0 107 168 +0 108 169 0 108 169 0 108 169 0 108 169 0 108 169 0 107 168 +0 109 171 0 108 169 0 89 144 0 70 118 1 57 102 0 49 93 +0 49 93 10 58 99 13 61 101 13 61 101 13 61 101 13 61 101 +13 61 101 13 56 97 59 105 139 243 247 249 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 59 105 139 +13 56 97 13 61 101 13 61 101 13 61 101 13 61 101 13 61 101 +13 61 101 0 52 95 0 48 92 0 51 94 0 49 91 0 47 88 +0 47 88 0 48 90 0 49 91 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 49 91 0 49 92 0 12 22 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 50 92 +0 50 92 0 47 88 0 64 111 0 108 169 0 108 169 0 108 169 +0 108 169 0 108 169 0 108 169 0 108 169 0 107 168 0 109 172 +0 98 155 0 64 111 0 47 89 0 47 88 0 48 89 0 49 90 +0 48 90 0 47 89 0 47 89 0 47 89 0 47 89 0 47 89 +0 47 89 0 44 87 0 51 94 220 228 234 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 45 87 122 +0 40 84 0 47 89 0 47 89 0 47 89 0 47 89 0 47 89 +0 47 89 0 48 90 0 49 91 0 49 91 0 49 91 0 49 91 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 45 85 0 4 9 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 50 92 +0 49 91 0 48 89 0 88 143 0 110 171 0 107 168 0 108 169 +0 108 169 0 108 169 0 108 169 0 107 168 0 109 171 0 93 151 +0 53 96 0 46 87 0 49 91 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 47 90 6 55 97 220 228 234 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 48 88 122 +0 43 86 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 51 94 0 37 70 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 50 92 +0 48 90 0 57 101 0 103 163 0 108 169 0 108 169 0 108 169 +0 108 169 0 108 169 0 107 168 0 109 170 0 99 157 0 53 96 +0 47 88 0 49 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 47 90 7 56 98 220 228 234 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 48 88 122 +0 43 86 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 91 0 52 95 0 26 49 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 50 92 +0 46 88 0 72 121 0 109 171 0 107 168 0 108 169 0 108 169 +0 108 169 0 108 169 0 108 168 0 108 169 0 65 113 0 46 87 +0 49 91 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 47 90 7 56 98 220 228 234 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 48 88 122 +0 43 86 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 49 92 0 50 93 0 12 22 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 49 91 +0 47 88 0 86 140 0 110 172 0 108 169 0 108 169 0 108 169 +0 108 169 0 108 169 0 109 171 0 92 148 0 48 90 0 48 90 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 47 90 7 56 98 220 228 234 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 48 88 122 +0 43 86 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 93 0 41 77 0 1 3 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 48 90 +0 49 91 0 94 151 0 109 171 0 108 169 0 108 169 0 108 169 +0 108 169 0 108 169 0 109 171 0 72 121 0 46 88 0 49 91 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 47 90 7 56 98 220 228 234 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 48 88 122 +0 43 86 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 49 91 +0 52 95 0 26 49 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 49 91 +0 51 94 0 100 158 0 109 170 0 108 169 0 108 169 0 108 169 +0 108 169 0 108 168 0 107 168 0 62 109 0 47 89 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 47 90 7 56 98 220 228 234 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 48 88 122 +0 43 86 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 48 89 0 8 14 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 49 91 +0 53 96 0 101 162 0 108 169 0 108 169 0 108 169 0 108 169 +0 108 169 0 108 169 0 105 166 1 55 99 0 48 90 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 47 90 6 55 97 220 228 234 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 48 88 122 +0 42 85 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 49 91 0 51 95 +0 34 62 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 49 91 +0 52 96 0 101 162 0 108 169 0 108 169 0 108 169 0 108 169 +0 108 169 0 108 169 0 103 165 1 55 99 0 48 90 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 46 89 10 58 99 221 230 237 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 252 253 254 42 85 121 +0 43 86 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 49 91 +0 12 22 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 49 91 +0 51 94 0 100 158 0 109 170 0 108 169 0 108 169 0 108 169 +0 108 169 0 108 168 0 105 167 0 62 109 0 47 89 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 44 87 17 74 116 238 243 246 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 243 247 249 42 85 121 +0 44 87 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 49 91 0 51 95 0 35 66 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 48 90 +0 49 91 0 94 151 0 109 171 0 108 169 0 108 169 0 108 169 +0 108 169 0 108 169 0 109 171 0 72 121 0 46 88 0 49 91 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 41 85 59 105 139 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 227 235 240 17 64 103 +0 45 88 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 47 89 0 10 19 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 49 91 +0 47 88 0 86 140 0 110 172 0 108 169 0 108 169 0 108 169 +0 108 169 0 108 169 0 109 171 0 92 148 0 48 90 0 48 90 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 49 91 0 41 85 156 179 196 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 194 209 220 0 48 90 +0 47 90 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 49 91 0 51 95 0 28 52 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 50 92 +0 46 88 0 72 121 0 109 171 0 107 168 0 108 169 0 108 169 +0 108 169 0 108 169 0 108 168 0 108 169 0 65 113 0 46 87 +0 49 91 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 41 84 45 87 122 243 247 249 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 133 160 181 0 40 84 +0 49 91 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 49 91 0 50 93 0 42 79 0 3 7 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 50 92 +0 48 90 0 57 101 0 103 165 0 108 169 0 108 169 0 108 169 +0 108 169 0 108 169 0 107 168 0 109 170 0 99 157 0 53 96 +0 47 88 0 49 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 44 87 +6 55 97 190 205 217 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 59 105 139 0 41 85 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 91 0 50 92 0 49 91 0 14 27 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 50 92 +0 49 91 0 48 89 0 89 144 0 110 171 0 107 168 0 108 169 +0 108 169 0 108 169 0 108 169 0 107 168 0 109 171 0 94 151 +0 53 96 0 46 87 0 49 91 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 49 91 0 41 84 13 56 97 +155 189 209 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 207 222 232 6 55 97 0 46 89 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 49 92 0 52 95 0 25 47 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 50 92 +0 50 92 0 47 88 0 64 111 0 108 169 0 108 168 0 108 169 +0 108 169 0 108 169 0 108 169 0 108 169 0 107 168 0 110 171 +0 99 157 0 64 111 0 43 86 0 42 85 0 44 87 0 46 88 +0 46 88 0 44 87 0 40 84 0 43 86 59 105 139 194 209 220 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 89 138 172 0 40 84 0 49 91 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 49 91 +0 51 95 0 34 64 0 0 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 50 92 +0 50 92 0 49 91 0 48 90 0 89 144 0 110 171 0 107 168 +0 108 169 0 108 169 0 108 169 0 108 169 0 108 169 0 105 167 +0 104 168 27 123 177 58 125 166 56 105 141 42 85 121 17 64 103 +17 64 103 45 87 122 79 130 164 174 198 214 250 252 253 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 207 222 232 10 58 99 0 47 89 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 49 91 0 51 95 +0 39 74 0 3 7 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 50 92 +0 50 92 0 50 92 0 47 89 1 57 102 0 103 163 0 108 170 +0 107 168 0 108 169 0 108 169 0 108 169 0 105 167 0 110 171 +156 192 214 239 246 249 255 255 255 255 255 255 247 250 251 238 243 246 +238 243 246 249 251 253 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 252 253 254 59 105 139 0 41 84 0 49 91 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 49 91 0 51 95 0 42 79 +0 6 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 50 92 +0 50 92 0 50 92 0 49 91 0 46 88 0 70 118 0 109 170 +0 108 169 0 107 168 0 108 169 0 107 168 0 103 165 156 192 214 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 133 160 181 0 41 85 0 49 91 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 49 91 0 51 95 0 41 77 0 7 14 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 50 93 0 50 92 +0 50 92 0 50 92 0 50 92 0 49 91 0 47 88 0 78 129 +0 109 171 0 108 169 0 107 168 0 105 166 27 123 177 241 246 248 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +156 179 196 0 48 91 0 47 89 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 49 91 0 50 92 0 51 95 0 38 73 0 6 11 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 44 82 0 49 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 49 91 0 47 89 +0 78 129 0 109 170 0 109 170 0 102 165 51 128 174 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 156 179 196 +4 52 93 0 46 88 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 49 91 +0 50 92 0 51 96 0 34 62 0 3 6 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 41 77 0 50 93 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 49 91 +0 47 88 0 70 118 0 103 163 0 107 169 27 123 177 243 247 249 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 247 250 251 133 160 181 0 47 90 +0 46 88 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 91 0 50 91 0 51 94 +0 49 91 0 25 47 0 0 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 34 62 0 51 94 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 49 91 0 46 88 1 57 102 0 88 143 0 105 167 156 192 214 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 190 205 217 59 105 139 0 41 84 0 47 90 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 49 91 0 50 93 0 51 96 0 41 77 +0 13 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 19 35 0 52 95 0 49 91 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 48 89 0 48 89 0 62 109 12 92 143 +156 192 214 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 249 251 253 +190 205 217 79 130 164 0 51 93 0 42 85 0 49 91 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 49 91 0 50 92 0 51 95 0 48 89 0 27 50 0 3 6 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 3 6 0 42 79 0 50 93 +0 49 91 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 49 91 0 48 89 0 45 88 +0 53 98 56 105 141 144 169 189 194 209 220 225 233 238 236 240 243 +236 240 243 227 235 240 202 218 229 155 189 209 98 145 177 42 85 121 +0 47 90 0 41 85 0 48 90 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 91 0 50 93 +0 51 95 0 49 90 0 34 62 0 9 18 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 16 30 0 49 92 +0 50 93 0 49 91 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 49 91 +0 48 90 0 42 85 0 41 85 0 50 92 11 59 100 17 64 103 +17 64 103 11 59 100 0 53 95 0 43 86 0 40 84 0 44 87 +0 48 91 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 49 91 0 50 92 0 51 94 0 52 96 0 47 88 +0 32 61 0 11 21 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22 40 +0 49 92 0 51 94 0 50 92 0 50 91 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 49 91 0 48 90 0 47 89 0 46 89 +0 46 89 0 47 89 0 48 90 0 49 91 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 +0 50 92 0 50 92 0 50 92 0 50 92 0 50 92 0 50 93 +0 51 95 0 52 96 0 49 91 0 41 75 0 25 46 0 8 14 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 16 30 0 42 79 0 51 95 0 51 95 0 51 93 0 50 93 +0 50 93 0 50 93 0 50 93 0 50 93 0 50 93 0 50 93 +0 50 93 0 50 93 0 50 93 0 50 93 0 50 93 0 50 93 +0 50 93 0 50 93 0 50 93 0 50 93 0 50 93 0 50 93 +0 50 93 0 50 93 0 50 93 0 50 93 0 50 93 0 50 93 +0 50 93 0 50 93 0 50 93 0 50 93 0 50 93 0 51 93 +0 51 94 0 52 95 0 52 95 0 52 95 0 50 92 0 45 85 +0 37 70 0 25 46 0 10 19 0 0 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 3 6 0 18 34 0 32 61 0 41 77 0 44 82 +0 44 82 0 45 82 0 45 82 0 45 82 0 45 82 0 45 82 +0 45 82 0 45 82 0 45 82 0 45 82 0 45 82 0 45 82 +0 45 82 0 45 82 0 45 82 0 45 82 0 45 82 0 45 82 +0 45 82 0 45 82 0 45 82 0 45 83 0 45 83 0 45 83 +0 45 82 0 45 82 0 45 82 0 44 82 0 42 81 0 41 77 +0 37 70 0 32 61 0 27 50 0 19 35 0 11 21 0 3 7 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 diff --git a/drivers/video/logo/logo_gentoo_clut224.ppm b/drivers/video/logo/logo_gentoo_clut224.ppm new file mode 100644 index 00000000000..6163d9fcc4c --- /dev/null +++ b/drivers/video/logo/logo_gentoo_clut224.ppm @@ -0,0 +1,803 @@ +P3 +76 80 +255 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +152 135 250 152 139 239 151 142 225 151 143 219 154 147 213 154 147 213 154 147 213 154 147 213 +154 147 213 154 147 213 151 143 219 157 148 227 157 148 227 152 139 239 158 154 250 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 155 145 246 151 142 225 154 147 213 +156 149 204 156 149 199 156 149 199 156 149 199 156 149 199 156 149 199 156 149 204 156 149 204 +156 149 204 156 149 204 156 149 204 154 147 213 154 147 213 154 147 213 151 142 225 152 139 239 +152 139 239 158 154 250 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 157 148 227 151 143 219 156 149 204 156 149 199 165 162 202 +186 183 208 199 194 238 219 217 229 221 219 238 245 245 249 252 252 253 255 255 255 255 255 255 +248 248 253 235 234 251 212 211 246 199 194 238 162 161 213 151 142 225 151 143 219 151 143 219 +151 142 225 152 139 239 152 139 239 152 135 250 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 159 151 238 151 143 219 156 149 204 165 162 202 186 181 225 231 231 244 253 253 255 +254 254 255 253 253 254 254 254 254 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +253 253 254 249 249 254 245 245 249 242 242 252 241 240 252 223 222 249 185 182 243 151 142 225 +151 142 225 149 138 231 146 136 235 152 139 239 152 135 250 152 135 250 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 155 145 246 +151 142 225 156 149 204 156 149 204 206 201 229 244 244 253 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +254 254 254 251 251 254 248 248 253 244 244 253 241 240 252 237 237 251 233 232 250 225 225 249 +190 187 243 159 151 238 146 135 237 146 135 237 146 135 237 146 133 248 146 133 248 136 134 248 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 149 138 231 154 147 213 +156 149 204 171 166 233 239 238 247 254 254 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 252 252 254 249 249 254 245 245 253 242 242 252 238 238 252 235 234 251 231 231 250 +228 227 250 223 222 249 185 182 243 146 133 243 146 133 248 144 131 244 146 133 248 146 133 248 +146 133 248 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 152 139 239 157 148 227 154 147 213 154 147 213 +206 201 229 253 253 254 254 254 254 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 253 253 254 250 250 254 246 246 253 243 243 252 239 239 252 236 236 251 233 232 250 +229 228 250 225 225 249 222 222 249 213 212 247 176 171 244 146 133 248 146 133 248 146 133 248 +146 133 248 146 133 248 136 134 248 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 155 145 246 151 142 225 154 147 213 157 148 227 227 227 249 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 254 254 254 251 251 254 248 248 253 244 244 253 240 240 252 237 236 251 234 233 251 +230 229 251 226 225 249 223 222 249 219 218 248 216 216 248 203 200 248 167 159 246 152 135 250 +152 135 250 152 135 250 152 135 250 146 133 248 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 152 139 239 151 142 225 151 142 225 180 177 239 245 245 249 254 254 254 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 252 252 254 248 248 253 245 244 253 241 241 252 237 237 251 234 234 251 +231 230 250 227 227 249 224 224 249 219 218 248 216 216 248 213 212 247 210 209 246 189 186 247 +158 154 250 155 145 246 155 145 246 152 135 250 146 133 248 146 133 248 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 152 139 239 151 142 225 151 142 225 199 194 238 254 254 254 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 253 253 254 249 249 254 246 245 253 242 242 252 238 238 252 235 234 251 +231 231 250 228 227 250 224 224 249 221 220 248 218 217 247 213 213 247 210 209 246 206 205 245 +201 199 246 171 166 245 155 145 246 158 149 246 155 145 246 146 133 248 146 133 248 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +146 133 243 149 138 231 149 138 231 213 212 247 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 253 253 254 250 250 254 246 246 253 243 243 252 239 239 252 236 236 251 +233 232 250 229 228 250 225 224 250 221 221 248 218 217 247 214 214 247 210 209 246 207 206 246 +203 203 245 200 199 244 185 183 243 163 156 246 160 152 246 160 152 246 155 145 246 146 133 248 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 152 139 239 +146 135 237 146 136 235 215 214 247 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 254 254 254 251 251 254 248 248 253 243 243 252 240 240 252 236 236 251 +233 232 250 229 229 250 226 225 249 222 222 249 218 218 248 215 214 247 210 209 246 208 208 246 +204 203 245 200 199 244 197 196 244 189 187 243 169 163 245 164 155 247 163 156 246 158 149 246 +146 133 248 146 133 243 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 146 133 248 146 133 243 +146 135 237 203 200 248 254 254 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 251 251 254 248 248 253 244 244 253 241 240 252 237 237 251 +234 233 251 230 229 251 226 225 249 223 222 249 219 218 248 215 215 247 212 211 246 208 208 246 +204 203 245 201 200 245 197 196 244 194 193 243 190 188 243 176 171 244 167 159 246 168 162 245 +165 158 245 146 133 243 144 131 244 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 158 154 250 146 133 248 146 133 243 +184 179 247 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 252 252 254 248 248 253 245 244 253 241 241 252 237 237 251 +234 234 251 230 230 250 227 227 249 223 223 249 219 218 248 215 215 247 212 211 246 208 208 246 +204 204 245 201 200 245 197 196 244 194 193 243 190 188 243 188 186 243 181 177 244 171 166 245 +171 166 245 171 166 245 155 145 246 144 131 244 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 146 133 248 144 131 244 164 155 247 +253 253 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 244 244 253 230 230 250 221 220 248 220 219 250 234 233 251 238 238 252 +234 234 251 231 230 250 227 227 249 223 223 249 219 218 248 216 216 248 213 212 247 209 208 246 +204 204 245 201 201 245 198 197 244 194 193 243 191 190 243 188 187 243 186 184 243 182 180 243 +175 170 244 174 170 244 175 170 244 160 152 246 146 133 243 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 146 133 248 146 133 248 146 133 248 234 233 253 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 251 251 254 228 227 250 204 204 245 185 183 243 189 186 247 +212 210 249 231 231 250 227 227 249 224 224 249 219 218 248 216 216 248 213 212 247 209 208 246 +206 205 245 201 201 245 198 197 244 195 194 243 191 190 243 188 187 243 186 184 243 184 182 243 +181 177 244 178 174 244 178 174 244 178 175 244 168 162 245 146 135 237 145 140 230 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 146 133 248 146 133 248 189 186 247 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 244 244 253 218 217 247 191 190 243 176 171 244 +160 152 246 171 164 246 217 216 247 224 224 249 221 220 248 216 216 248 213 212 247 209 208 246 +206 205 245 201 201 245 199 198 244 195 194 243 191 190 243 188 187 243 186 185 243 184 182 243 +182 180 243 180 177 244 180 177 244 181 177 244 182 180 243 176 171 244 152 139 239 146 135 230 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 146 133 248 152 135 250 155 145 246 242 241 253 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 251 251 254 224 224 249 196 195 244 178 175 244 +163 156 246 152 135 250 149 138 231 206 201 229 221 220 248 216 216 248 213 213 247 210 209 246 +206 205 245 201 201 245 199 198 244 195 194 243 191 190 243 188 187 243 186 185 243 184 182 243 +183 180 243 181 177 244 178 175 244 182 180 243 185 183 243 185 183 243 180 177 244 152 139 239 +146 136 235 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 146 133 248 155 145 246 184 179 247 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 246 246 253 217 214 250 212 208 248 220 219 250 218 217 247 195 194 243 178 174 244 +163 156 246 146 133 248 151 142 225 156 149 199 165 162 202 220 219 250 213 213 247 210 209 246 +206 205 245 201 201 245 199 198 244 195 194 243 192 191 243 189 187 243 187 185 243 185 182 243 +183 180 243 181 177 244 178 175 244 177 172 244 183 180 243 188 187 243 189 187 243 185 183 243 +159 151 238 146 135 237 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 146 133 248 152 135 250 155 145 246 220 219 250 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +243 243 253 155 145 246 146 133 243 146 133 243 146 133 243 146 135 237 158 149 246 166 159 245 +159 150 246 146 133 248 151 143 219 151 143 191 105 99 142 186 183 208 213 213 247 210 209 246 +207 206 246 201 201 245 199 198 244 195 194 243 192 191 243 189 187 243 187 185 243 185 182 243 +183 180 243 181 177 244 178 175 244 176 172 244 174 170 244 185 183 243 193 191 243 194 193 243 +193 191 243 159 151 238 146 136 235 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 146 133 248 155 145 246 158 149 246 248 247 254 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 254 254 255 248 248 253 255 255 255 255 255 255 255 255 255 +189 186 247 146 133 243 146 135 237 146 133 243 146 135 237 146 133 243 146 135 237 146 135 237 +146 133 243 146 135 237 154 147 213 134 128 170 88 84 126 88 84 126 199 194 238 210 209 246 +207 206 246 201 201 245 199 198 244 195 194 243 192 191 243 189 187 243 187 185 243 185 182 243 +183 180 243 181 177 244 178 175 244 176 172 244 174 170 244 173 167 245 189 187 243 199 198 244 +201 200 245 199 198 244 159 151 238 145 140 230 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 146 133 248 160 152 246 165 158 245 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 246 246 253 219 218 248 234 233 251 243 243 252 248 248 253 +152 139 239 146 135 237 146 135 237 146 135 237 146 135 237 146 135 237 146 135 237 146 135 237 +146 135 237 146 136 235 156 149 199 114 106 151 82 76 118 82 76 118 142 137 174 210 209 246 +207 206 246 201 201 245 199 198 244 195 194 243 192 191 243 189 187 243 187 185 243 185 182 243 +183 180 243 181 177 244 178 175 244 176 172 244 174 170 244 172 167 245 171 166 245 193 191 243 +206 205 245 207 206 246 209 209 245 159 151 238 146 135 230 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 146 133 248 144 131 244 163 156 246 165 158 245 254 253 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 244 244 253 190 188 243 201 200 245 208 208 246 207 206 246 +146 135 237 146 135 237 146 135 237 146 135 237 146 135 237 146 135 237 146 135 237 146 135 237 +146 135 237 146 136 235 136 128 204 95 88 132 82 76 118 82 76 118 100 95 138 210 209 246 +207 206 246 201 201 245 199 198 244 195 194 243 192 191 243 189 187 243 187 185 243 185 182 243 +183 180 243 181 177 244 178 175 244 176 172 244 174 170 244 172 167 245 171 166 245 169 163 245 +199 198 244 212 211 246 213 212 247 209 209 245 157 148 227 151 137 225 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 144 131 244 146 133 248 167 159 246 167 159 246 234 233 253 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 184 179 247 177 172 244 181 177 244 182 180 243 +152 139 239 146 135 237 146 135 237 146 136 235 146 136 235 146 136 235 146 136 235 146 136 235 +146 136 235 146 136 235 146 136 235 82 76 118 82 76 118 82 76 118 88 84 126 210 209 246 +206 205 245 201 201 245 199 198 244 195 194 243 191 190 243 189 187 243 187 185 243 185 182 243 +183 180 243 181 177 244 178 175 244 176 172 244 174 170 244 172 167 245 171 166 245 168 162 245 +169 163 245 207 206 246 218 218 248 221 220 248 212 211 246 157 148 227 161 137 216 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 144 131 244 144 131 244 163 156 246 169 163 245 189 186 247 253 253 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 217 214 250 159 150 246 160 152 246 163 156 246 +158 149 246 146 135 230 146 136 235 146 136 235 146 136 235 149 138 231 146 136 235 149 138 231 +149 138 231 149 138 231 146 135 230 82 76 118 82 76 118 82 76 118 110 102 146 210 209 246 +206 205 245 201 201 245 199 198 244 195 194 243 191 190 243 188 187 243 186 185 243 184 182 243 +182 180 243 180 177 244 178 174 244 176 172 244 174 170 244 172 167 245 169 163 245 168 162 245 +166 159 245 171 164 246 216 216 248 224 224 249 226 225 249 215 214 247 157 148 227 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 146 133 243 146 133 243 155 145 246 172 167 245 173 167 245 199 196 246 251 251 254 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 254 254 255 195 192 247 144 131 244 146 133 248 +144 131 244 146 133 243 146 136 235 151 137 225 145 140 230 146 135 230 149 138 231 149 138 231 +149 138 231 146 135 230 113 109 162 82 76 118 82 76 118 82 76 118 165 162 202 209 208 246 +206 205 245 201 201 245 199 198 244 195 194 243 191 190 243 188 187 243 186 185 243 184 182 243 +182 180 243 180 177 244 178 174 244 176 172 244 174 170 244 172 167 245 169 163 245 168 162 245 +166 159 245 163 156 246 175 170 244 226 225 249 231 230 250 233 232 250 209 209 245 151 142 225 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 146 133 243 146 135 237 146 135 237 166 159 245 176 171 244 176 172 244 189 186 247 +242 241 253 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 254 254 255 206 201 229 154 147 213 +154 147 213 156 149 204 156 149 199 151 143 191 126 124 174 0 0 0 0 0 0 146 135 230 +149 138 231 126 124 174 82 76 118 82 76 118 82 76 118 131 126 164 212 211 246 209 208 246 +204 204 245 201 201 245 198 197 244 194 193 243 191 190 243 188 187 243 186 184 243 184 182 243 +182 180 243 180 177 244 178 174 244 176 172 244 174 170 244 172 167 245 169 163 245 168 162 245 +167 159 246 163 156 246 164 155 247 184 179 247 237 236 251 237 236 251 237 237 251 199 194 238 +151 143 219 0 0 0 0 0 0 0 0 0 +0 0 0 146 135 237 146 133 243 146 135 237 152 139 239 174 170 244 179 175 244 180 177 244 +182 180 243 220 219 250 254 254 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 219 217 229 +142 137 174 114 108 147 102 97 140 95 88 132 82 76 118 82 76 118 82 76 118 82 76 118 +95 88 132 82 76 118 82 76 118 82 76 118 142 137 174 212 211 246 213 212 247 209 208 246 +204 204 245 201 201 245 198 197 244 194 193 243 191 190 243 188 187 243 186 184 243 184 182 243 +182 180 243 180 177 244 178 174 244 176 171 244 174 170 244 171 166 245 169 163 245 168 162 245 +167 159 246 164 155 247 163 156 246 160 152 246 212 208 248 242 242 252 242 242 252 241 240 252 +171 166 233 151 143 219 0 0 0 0 0 0 +0 0 0 0 0 0 146 135 237 146 135 237 146 135 237 152 139 239 176 172 244 183 180 243 +183 180 243 184 182 243 196 194 246 234 234 251 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +252 252 253 186 183 208 122 118 142 82 76 118 82 76 118 82 76 118 82 76 118 82 76 118 +82 76 118 82 76 118 114 106 151 186 181 225 223 223 249 215 215 247 212 211 246 208 208 246 +204 204 245 201 200 245 197 196 244 194 193 243 190 188 243 188 186 243 186 184 243 184 182 243 +182 180 243 180 177 244 178 174 244 176 171 244 174 170 244 171 166 245 169 163 245 168 162 245 +167 159 246 163 156 246 163 156 246 159 150 246 164 155 247 242 241 253 248 248 253 251 250 252 +231 231 244 154 147 213 0 0 0 0 0 0 +0 0 0 0 0 0 146 135 237 146 136 235 146 136 235 146 136 235 149 138 231 174 170 244 +186 184 243 187 185 243 187 186 243 188 186 243 204 204 246 242 241 253 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 219 217 229 165 162 202 131 126 164 114 108 147 114 108 147 +142 137 174 206 201 229 227 227 249 224 224 249 219 218 248 215 214 247 212 211 246 208 208 246 +204 203 245 201 200 245 197 196 244 193 191 243 190 188 243 187 186 243 186 184 243 184 182 243 +181 177 244 180 177 244 178 174 244 176 171 244 173 167 245 171 166 245 169 163 245 168 162 245 +165 158 245 163 156 246 160 152 246 160 152 246 158 149 246 195 192 247 253 253 254 254 254 254 +254 253 255 199 194 238 154 147 213 0 0 0 +0 0 0 0 0 0 0 0 0 146 136 235 146 136 235 149 138 231 149 138 231 149 138 231 +171 166 233 187 185 243 190 188 243 192 191 243 193 191 243 194 193 243 215 215 247 246 246 253 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 254 254 254 252 252 253 251 250 252 245 245 249 240 240 252 236 236 251 +231 231 250 227 227 249 224 224 249 221 221 248 218 218 248 214 214 247 210 209 246 207 206 246 +204 203 245 200 199 244 196 195 244 193 191 243 189 187 243 187 186 243 185 183 243 183 181 243 +181 177 244 179 175 244 177 172 244 175 170 244 173 167 245 171 166 245 169 163 245 168 162 245 +165 158 245 163 156 246 160 152 246 159 150 246 158 149 246 159 150 246 248 247 254 255 255 255 +255 255 255 239 238 247 154 147 213 0 0 0 +0 0 0 0 0 0 0 0 0 146 135 230 149 138 231 146 136 235 149 138 231 149 138 231 +146 136 235 157 148 227 185 182 243 197 196 244 198 197 244 199 198 244 200 199 244 201 200 245 +219 218 248 245 245 253 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 253 253 254 250 250 254 246 246 253 243 243 252 239 239 252 235 234 251 +233 232 250 228 227 250 225 224 250 221 220 248 218 217 247 213 213 247 210 209 246 207 206 246 +203 203 245 199 198 244 196 195 244 192 191 243 189 187 243 187 186 243 185 183 243 183 180 243 +181 177 244 179 175 244 178 174 244 175 170 244 173 167 245 171 166 245 169 163 245 167 159 246 +165 158 245 163 156 246 160 152 246 159 150 246 158 149 246 155 145 246 220 219 250 255 255 255 +255 255 255 253 253 255 186 181 225 154 147 213 +0 0 0 0 0 0 0 0 0 0 0 0 149 138 231 149 138 231 149 138 231 149 138 231 +149 138 231 149 138 231 149 138 231 171 166 233 197 196 244 204 203 245 204 204 245 207 206 246 +207 206 246 209 208 246 223 222 249 244 244 253 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 252 252 254 249 249 254 245 245 253 242 242 252 238 238 252 235 234 251 +231 231 250 228 227 250 224 224 249 221 220 248 216 216 248 213 212 247 210 209 246 206 205 245 +201 201 245 199 198 244 195 194 243 192 191 243 189 187 243 187 185 243 185 183 243 183 180 243 +181 177 244 179 175 244 177 172 244 175 170 244 173 167 245 171 166 245 168 162 245 167 159 246 +165 158 245 163 156 246 160 152 246 159 150 246 158 149 246 155 145 246 203 200 248 254 254 255 +255 255 255 255 255 255 199 194 238 156 149 204 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 151 142 225 149 138 231 151 137 225 +149 138 231 151 137 225 151 137 225 151 142 225 151 142 225 180 177 239 207 206 246 212 211 246 +213 212 247 213 213 247 215 214 247 215 215 247 226 225 249 244 244 253 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 251 251 254 248 248 253 244 244 253 241 241 252 237 237 251 234 234 251 +230 230 250 227 227 249 223 223 249 219 218 248 216 216 248 213 212 247 209 208 246 204 204 245 +201 201 245 198 197 244 195 194 243 191 190 243 188 187 243 186 185 243 184 182 243 182 180 243 +181 177 244 178 175 244 176 172 244 174 170 244 172 167 245 171 166 245 168 162 245 167 159 246 +165 158 245 163 156 246 160 152 246 159 150 246 155 145 246 155 145 246 207 205 248 255 255 255 +255 255 255 255 255 255 206 201 229 156 149 204 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 151 137 225 151 142 225 +151 142 225 151 142 225 151 142 225 151 137 225 151 142 225 151 142 225 157 148 227 185 182 243 +214 214 247 219 218 248 219 218 248 221 220 248 222 222 249 223 223 249 230 230 250 245 245 253 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 254 254 254 250 250 254 248 248 253 243 243 252 240 240 252 236 236 251 234 233 251 +229 229 250 226 225 249 222 222 249 219 218 248 215 215 247 212 211 246 208 208 246 204 204 245 +201 200 245 197 196 244 194 193 243 190 188 243 188 187 243 186 184 243 184 182 243 182 180 243 +180 177 244 178 174 244 176 172 244 174 170 244 172 167 245 169 163 245 168 162 245 166 159 245 +163 156 246 163 156 246 160 152 246 158 149 246 155 145 246 155 145 246 224 222 251 255 255 255 +255 255 255 255 255 255 186 181 225 156 149 204 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 136 134 248 +151 142 225 151 142 225 151 142 225 151 142 225 151 142 225 151 137 225 151 143 219 151 143 219 +157 148 227 186 184 243 218 217 247 226 225 249 227 227 249 228 227 250 229 229 250 230 230 250 +235 234 251 251 250 254 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 253 253 254 249 249 254 246 246 253 242 242 252 239 239 252 235 234 251 233 232 250 +229 228 250 225 225 249 221 221 248 218 217 247 214 214 247 210 209 246 207 206 246 204 203 245 +200 199 244 197 196 244 193 191 243 190 188 243 188 186 243 186 184 243 184 182 243 182 180 243 +180 177 244 178 174 244 176 171 244 174 170 244 171 166 245 169 163 245 168 162 245 167 159 246 +164 155 247 160 152 246 160 152 246 158 149 246 155 145 246 171 164 246 253 253 255 255 255 255 +255 255 255 253 252 254 162 161 213 156 149 204 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 151 142 225 151 143 219 151 142 225 151 143 219 151 143 219 151 142 225 151 143 219 +151 143 219 151 143 219 151 143 219 186 181 225 220 219 250 234 233 251 234 234 251 235 234 251 +237 236 251 245 245 253 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 252 252 254 248 248 253 245 245 253 241 241 252 238 238 252 234 234 251 231 231 250 +228 227 250 224 224 249 221 220 248 218 217 247 213 213 247 210 209 246 207 206 246 203 203 245 +199 198 244 196 195 244 192 191 243 189 187 243 187 186 243 185 183 243 183 181 243 181 177 244 +179 175 244 177 172 244 175 170 244 173 167 245 171 166 245 169 163 245 168 162 245 167 159 246 +163 156 246 164 155 247 160 152 246 158 149 246 160 152 246 240 238 254 255 255 255 255 255 255 +255 255 255 221 219 238 156 149 204 156 149 204 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 151 143 219 151 143 219 151 143 219 151 143 219 151 143 219 +151 143 219 151 143 219 151 143 219 151 143 219 154 147 213 180 177 239 231 230 250 241 240 252 +243 243 252 253 253 254 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +254 254 254 250 250 254 248 248 253 243 243 252 240 240 252 237 237 251 234 233 251 230 229 251 +227 227 249 223 223 249 219 218 248 216 216 248 213 212 247 209 208 246 206 205 245 201 201 245 +199 198 244 195 194 243 192 191 243 189 187 243 187 185 243 185 183 243 183 180 243 181 177 244 +179 175 244 178 174 244 175 170 244 173 167 245 171 166 245 169 163 245 167 159 246 165 158 245 +163 156 246 160 152 246 159 150 246 159 150 246 230 229 251 255 255 255 255 255 255 255 255 255 +253 252 254 162 161 213 156 149 199 156 149 204 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 151 143 219 151 143 219 151 143 219 +151 143 219 151 143 219 154 147 213 151 143 219 151 143 219 199 194 238 245 245 249 246 245 253 +252 252 254 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +252 252 254 249 249 254 246 246 253 242 242 252 239 239 252 236 236 251 233 232 250 229 228 250 +226 225 249 222 222 249 218 218 248 215 215 247 212 211 246 208 208 246 204 204 245 201 200 245 +198 197 244 194 193 243 191 190 243 188 187 243 186 184 243 184 182 243 182 180 243 181 177 244 +178 175 244 176 172 244 175 170 244 173 167 245 171 166 245 168 162 245 167 159 246 165 158 245 +163 156 246 160 152 246 160 152 246 224 222 251 255 255 255 255 255 255 255 255 255 255 255 255 +206 201 229 156 149 199 156 149 199 156 149 199 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 136 134 248 154 147 213 +154 147 213 151 143 219 154 147 213 154 147 213 209 209 245 251 250 252 250 250 254 254 254 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +251 251 254 248 248 253 245 244 253 241 241 252 237 237 251 234 234 251 231 231 250 228 227 250 +224 224 249 221 220 248 218 217 247 214 214 247 210 209 246 207 206 246 204 203 245 200 199 244 +197 196 244 193 191 243 190 188 243 188 186 243 186 184 243 184 182 243 182 180 243 180 177 244 +178 174 244 176 172 244 174 170 244 172 167 245 169 163 245 168 162 245 166 159 245 163 156 246 +163 156 246 160 152 246 217 214 250 255 255 255 255 255 255 255 255 255 255 255 255 239 238 247 +165 162 202 156 149 199 165 162 202 156 149 199 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +161 137 216 161 137 216 162 161 213 226 225 249 252 252 253 254 254 254 254 254 254 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 253 253 254 +250 250 254 246 246 253 243 243 252 240 240 252 236 236 251 234 233 251 230 229 251 227 227 249 +223 223 249 219 218 248 216 216 248 213 212 247 210 209 246 206 205 245 203 203 245 199 198 244 +196 195 244 192 191 243 189 187 243 187 186 243 185 183 243 183 181 243 181 177 244 179 175 244 +178 174 244 176 171 244 174 170 244 171 166 245 169 163 245 168 162 245 167 159 246 163 156 246 +163 156 246 212 210 249 255 255 255 255 255 255 255 255 255 255 255 255 251 251 254 186 183 208 +156 149 199 156 149 199 156 149 199 156 149 199 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 186 181 225 241 240 252 254 254 254 254 254 254 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 251 251 254 +248 248 253 245 245 253 242 242 252 238 238 252 235 234 251 233 232 250 229 228 250 225 225 249 +222 222 249 218 218 248 215 215 247 212 211 246 208 208 246 204 204 245 201 201 245 198 197 244 +195 194 243 191 190 243 189 187 243 187 185 243 185 183 243 183 180 243 181 177 244 179 175 244 +177 172 244 175 170 244 173 167 245 171 166 245 169 163 245 168 162 245 165 158 245 163 156 246 +212 208 248 255 255 255 255 255 255 255 255 255 255 255 255 254 254 254 186 181 225 151 143 191 +156 149 199 156 149 199 156 149 199 151 143 191 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +186 181 225 251 250 252 254 254 254 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 253 253 254 250 250 254 +248 248 253 243 243 252 240 240 252 237 237 251 234 233 251 230 230 250 227 227 249 224 224 249 +221 220 248 218 217 247 213 213 247 210 209 246 207 206 246 204 203 245 201 200 245 197 196 244 +194 193 243 190 188 243 188 187 243 186 184 243 184 182 243 182 180 243 180 177 244 178 175 244 +176 172 244 175 170 244 173 167 245 171 166 245 168 162 245 167 159 246 165 158 245 217 214 250 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 219 217 229 156 149 199 156 149 199 +151 143 191 151 143 191 151 143 191 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 161 160 183 199 194 238 +253 252 254 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 254 254 254 251 251 254 248 248 253 +245 245 253 242 242 252 239 239 252 235 234 251 233 232 250 229 229 250 226 225 249 223 222 249 +219 218 248 215 215 247 213 212 247 209 208 246 206 205 245 201 201 245 199 198 244 196 195 244 +192 191 243 189 187 243 187 186 243 185 183 243 184 182 243 182 180 243 180 177 244 178 174 244 +176 171 244 174 170 244 172 167 245 169 163 245 168 162 245 167 159 246 220 219 250 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 221 219 238 151 143 191 151 143 191 151 143 191 +156 149 199 151 143 191 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 154 147 213 206 201 229 252 252 253 +254 254 254 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 252 252 254 249 249 254 246 246 253 +243 243 252 240 240 252 237 237 251 234 234 251 231 231 250 228 227 250 224 224 249 221 220 248 +218 217 247 215 214 247 212 211 246 208 208 246 204 204 245 201 200 245 198 197 244 195 194 243 +191 190 243 189 187 243 187 185 243 185 183 243 183 180 243 181 177 244 179 175 244 177 172 244 +175 170 244 173 167 245 171 166 245 169 163 245 169 163 245 225 224 250 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 231 231 244 151 143 191 151 143 191 151 143 191 151 143 191 +151 143 191 151 143 191 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 154 147 213 206 201 229 254 254 254 254 254 254 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 254 254 254 251 251 254 248 248 253 245 245 253 +242 242 252 238 238 252 235 234 251 233 232 250 229 229 250 226 225 249 223 222 249 219 218 248 +216 216 248 213 212 247 210 209 246 207 206 246 203 203 245 200 199 244 197 196 244 193 191 243 +190 188 243 188 186 243 186 184 243 184 182 243 182 180 243 181 177 244 178 175 244 177 172 244 +175 170 244 173 167 245 171 166 245 172 167 245 230 229 251 255 255 255 255 255 255 255 255 255 +255 255 255 254 254 254 231 231 244 151 143 191 151 143 191 151 143 191 143 137 181 151 143 191 +143 137 181 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 162 161 213 221 219 238 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 252 252 254 249 249 254 246 246 253 243 243 252 +240 240 252 237 237 251 234 234 251 231 230 250 228 227 250 225 224 250 221 221 248 218 218 248 +215 214 247 212 211 246 209 208 246 204 204 245 201 201 245 199 198 244 195 194 243 192 191 243 +189 187 243 187 186 243 185 183 243 183 181 243 182 180 243 180 177 244 178 174 244 176 172 244 +174 170 244 172 167 245 176 171 244 234 233 253 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 231 231 244 151 143 191 151 143 191 143 137 181 151 143 191 143 137 181 151 143 191 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 165 162 202 221 219 238 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 253 253 254 250 250 254 248 248 253 244 244 253 241 241 252 +238 238 252 235 234 251 233 232 250 229 229 250 226 225 249 223 222 249 219 218 248 216 216 248 +213 213 247 210 209 246 207 206 246 204 203 245 201 200 245 197 196 244 194 193 243 191 190 243 +188 187 243 187 185 243 185 183 243 183 180 243 181 177 244 179 175 244 177 172 244 175 170 244 +173 167 245 184 179 247 243 243 253 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +221 219 238 151 143 191 143 137 181 143 137 181 143 137 181 143 137 181 143 137 181 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 162 161 213 231 231 244 254 254 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 253 253 254 250 250 254 248 248 253 245 245 253 242 242 252 239 239 252 +236 236 251 234 233 251 230 230 250 227 227 249 224 224 249 221 221 248 218 218 248 215 214 247 +212 211 246 209 208 246 206 205 245 201 201 245 199 198 244 196 195 244 193 191 243 189 187 243 +187 186 243 186 184 243 184 182 243 182 180 243 180 177 244 178 175 244 177 172 244 175 170 244 +195 192 247 249 249 254 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 221 219 238 +151 143 191 143 137 181 143 137 181 143 137 181 143 137 181 143 137 181 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +186 183 208 231 231 244 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 254 254 254 251 251 254 248 248 253 246 245 253 243 243 252 240 240 252 237 237 251 +234 234 251 231 231 250 229 228 250 226 225 249 223 222 249 219 218 248 216 216 248 213 213 247 +210 209 246 207 206 246 204 203 245 201 200 245 197 196 244 194 193 243 191 190 243 189 187 243 +187 185 243 185 183 243 183 181 243 181 177 244 180 177 244 178 174 244 176 171 244 207 205 248 +254 254 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 206 201 229 143 137 181 +142 137 174 143 137 181 143 137 181 143 137 181 143 137 181 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 165 162 202 +231 231 244 254 253 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +254 254 254 251 251 254 249 249 254 246 246 253 243 243 252 241 241 252 238 238 252 235 234 251 +233 232 250 230 229 251 227 227 249 224 224 249 221 220 248 218 217 247 215 214 247 212 211 246 +209 208 246 206 205 245 201 201 245 199 198 244 196 195 244 193 191 243 190 188 243 188 186 243 +186 184 243 184 182 243 182 180 243 181 177 244 179 175 244 178 174 244 220 219 250 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 202 200 215 137 131 176 143 137 181 +137 131 176 137 131 176 137 131 176 137 131 176 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 165 162 202 231 231 244 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 254 254 254 +252 252 254 249 249 254 248 248 253 244 244 253 242 241 253 239 239 252 236 236 251 234 233 251 +230 230 250 228 227 250 225 224 250 221 221 248 219 218 248 215 215 247 213 212 247 210 209 246 +207 206 246 204 203 245 201 200 245 198 197 244 194 193 243 191 190 243 189 187 243 187 185 243 +185 183 243 183 181 243 182 180 243 180 177 244 183 180 243 233 232 252 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 248 248 253 186 183 208 137 131 176 137 131 176 137 131 176 +137 131 176 137 131 176 137 131 176 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 156 149 199 221 219 238 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 254 254 254 252 252 254 +249 249 254 248 248 253 245 244 253 242 242 252 239 239 252 237 236 251 234 234 251 231 231 250 +229 228 250 226 225 249 223 222 249 219 218 248 216 216 248 214 214 247 210 209 246 208 208 246 +204 204 245 201 201 245 199 198 244 196 195 244 193 191 243 190 188 243 188 186 243 186 184 243 +184 182 243 183 180 243 181 177 244 196 194 246 246 245 253 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 239 238 247 161 160 183 137 131 176 137 131 176 137 131 176 137 131 176 +137 131 176 134 128 170 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 156 149 204 219 217 229 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 254 254 254 252 252 254 249 249 254 +248 248 253 245 244 253 242 242 252 240 240 252 237 237 251 234 234 251 233 232 250 229 229 250 +226 225 249 224 224 249 221 220 248 218 217 247 215 215 247 212 211 246 209 208 246 207 206 246 +203 203 245 200 199 244 197 196 244 194 193 243 191 190 243 189 187 243 187 185 243 185 183 243 +183 181 243 183 180 243 217 214 250 254 254 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 221 219 238 143 137 181 137 131 176 137 131 176 134 128 170 134 128 170 134 128 170 +134 128 170 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 136 134 248 186 181 225 255 255 255 254 254 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 253 253 254 251 251 254 249 249 254 248 248 253 +245 244 253 242 242 252 240 240 252 237 237 251 235 234 251 233 232 250 230 229 251 227 227 249 +224 224 249 221 221 248 219 218 248 215 215 247 213 212 247 210 209 246 207 206 246 204 204 245 +201 201 245 199 198 244 196 195 244 193 191 243 190 188 243 188 186 243 186 184 243 184 182 243 +190 188 243 236 236 251 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +202 200 215 137 131 176 134 128 170 134 128 170 126 124 174 134 128 170 130 124 168 134 128 170 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 165 162 202 245 245 249 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 253 253 254 251 251 254 249 249 254 248 248 253 245 244 253 +242 242 252 240 240 252 237 237 251 235 234 251 233 232 250 230 230 250 228 227 250 225 224 250 +222 222 249 219 218 248 216 216 248 214 214 247 210 209 246 208 208 246 206 205 245 201 201 245 +200 199 244 197 196 244 194 193 243 191 190 243 188 187 243 187 185 243 185 183 243 204 203 245 +249 249 254 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 251 250 252 165 162 202 +134 128 170 130 124 168 130 124 168 130 124 168 130 124 168 130 124 168 130 124 168 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 151 143 191 231 231 244 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 254 254 254 252 252 254 250 250 254 248 248 253 246 246 253 244 244 253 242 242 252 +240 240 252 237 237 251 235 234 251 234 233 251 230 230 250 228 227 250 225 225 249 223 222 249 +219 218 248 218 217 247 215 214 247 212 211 246 209 208 246 207 206 246 203 203 245 201 200 245 +198 197 244 195 194 243 192 191 243 189 187 243 187 186 243 188 187 243 225 224 250 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 221 219 238 143 137 181 134 128 170 +130 124 168 130 124 168 130 124 168 130 124 168 130 124 168 125 119 163 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 122 118 142 186 183 208 254 254 254 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +253 253 254 251 251 254 249 249 254 248 248 253 246 245 253 243 243 252 242 241 253 239 239 252 +237 237 251 235 234 251 233 232 250 230 230 250 228 227 250 226 225 249 223 223 249 221 220 248 +218 217 247 215 215 247 213 212 247 210 209 246 207 206 246 204 204 245 201 201 245 199 198 244 +196 195 244 193 191 243 190 188 243 188 187 243 204 204 246 245 245 253 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 251 251 254 202 200 215 131 126 164 130 124 168 130 124 168 +125 119 163 130 124 168 125 119 163 125 119 163 126 124 174 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 143 137 181 221 219 238 254 254 254 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 253 253 254 252 252 254 +250 250 254 248 248 253 248 248 253 245 245 253 243 243 252 241 241 252 239 239 252 237 237 251 +235 234 251 233 232 250 230 230 250 228 227 250 226 225 249 223 223 249 221 220 248 218 218 248 +215 215 247 213 212 247 210 209 246 208 208 246 204 204 245 201 201 245 199 198 244 197 196 244 +194 193 243 191 190 243 193 191 243 228 227 250 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 239 238 247 161 160 183 125 119 163 125 119 163 125 119 163 125 119 163 +125 119 163 125 119 163 125 119 163 107 101 144 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +122 118 142 156 149 199 254 254 254 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 254 254 254 253 253 254 251 251 254 250 250 254 249 249 254 +248 248 253 246 245 253 244 244 253 242 242 252 240 240 252 238 238 252 236 236 251 234 234 251 +233 232 250 230 230 250 228 227 250 226 225 249 223 223 249 221 220 248 218 218 248 215 215 247 +213 213 247 210 209 246 208 208 246 206 205 245 203 203 245 200 199 244 197 196 244 195 194 243 +192 191 243 208 208 246 248 247 254 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +254 253 255 202 200 215 130 124 168 125 119 163 125 119 163 125 119 163 125 119 163 125 119 163 +125 119 163 121 115 159 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +143 137 181 186 183 208 254 254 254 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +254 254 254 253 253 254 252 252 254 251 251 254 250 250 254 249 249 254 248 248 253 246 246 253 +244 244 253 243 243 252 241 241 252 239 239 252 237 237 251 236 236 251 234 234 251 233 232 250 +230 229 251 228 227 250 225 225 249 223 223 249 221 220 248 218 218 248 216 216 248 213 213 247 +210 209 246 209 208 246 206 205 245 203 203 245 201 200 245 198 197 244 195 194 243 198 197 244 +233 232 250 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 239 238 247 +161 160 183 121 115 159 125 119 163 121 115 159 125 119 163 121 115 159 121 115 159 121 115 159 +121 115 159 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +143 137 181 202 200 215 255 255 255 255 255 255 254 254 254 253 253 254 252 252 254 251 251 254 +251 251 254 250 250 254 249 249 254 248 248 253 248 248 253 246 245 253 244 244 253 243 243 252 +242 241 253 240 240 252 238 238 252 237 236 251 235 234 251 234 233 251 231 231 250 229 229 250 +227 227 249 225 225 249 223 223 249 221 220 248 218 218 248 216 216 248 213 213 247 212 211 246 +209 208 246 207 206 246 204 203 245 201 200 245 199 198 244 196 195 244 219 218 248 250 250 254 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 250 250 254 202 200 215 125 119 163 +121 115 159 121 115 159 121 115 159 121 115 159 120 114 157 120 114 157 121 115 159 116 112 152 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +137 131 176 206 201 229 254 254 254 255 255 255 252 252 254 250 250 254 249 249 254 248 248 253 +248 248 253 248 248 253 246 246 253 245 245 253 244 244 253 243 243 252 242 241 253 240 240 252 +239 239 252 237 237 251 236 236 251 234 234 251 233 232 250 230 230 250 229 228 250 227 227 249 +225 224 250 223 222 249 221 220 248 218 218 248 215 215 247 213 213 247 212 211 246 209 208 246 +207 206 246 204 203 245 201 201 245 199 198 244 210 209 246 243 243 253 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 221 219 238 142 137 174 121 115 159 120 114 157 +121 115 159 120 114 157 120 114 157 120 114 157 120 114 157 120 114 157 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +137 131 176 202 200 215 255 255 255 255 255 255 252 252 254 246 246 253 246 246 253 245 245 253 +245 244 253 244 244 253 243 243 252 242 242 252 241 241 252 240 240 252 238 238 252 237 237 251 +236 236 251 234 234 251 234 233 251 231 231 250 229 229 250 228 227 250 226 225 249 224 224 249 +222 222 249 219 218 248 218 217 247 215 215 247 213 213 247 212 211 246 209 208 246 207 206 246 +204 203 245 201 201 245 208 208 246 236 236 251 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 254 254 254 245 245 249 165 162 202 120 114 157 120 114 157 120 114 157 116 112 152 +120 114 157 116 112 152 116 112 152 116 112 152 113 109 162 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +137 131 176 186 183 208 254 254 255 255 255 255 253 253 255 243 243 252 243 243 252 242 242 252 +242 241 253 241 241 252 240 240 252 239 239 252 238 238 252 237 237 251 236 236 251 234 234 251 +234 233 251 231 231 250 230 230 250 228 227 250 227 227 249 225 225 249 223 223 249 221 221 248 +219 218 248 218 217 247 215 215 247 213 212 247 210 209 246 209 208 246 207 206 246 204 203 245 +207 206 246 234 233 251 254 254 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +252 252 253 186 183 208 131 126 164 116 112 152 120 114 157 116 112 152 116 112 152 116 112 152 +114 106 151 114 106 151 116 112 152 114 108 147 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +134 128 170 151 143 191 255 255 255 255 255 255 255 255 255 243 243 253 240 240 252 239 239 252 +238 238 252 237 237 251 237 237 251 236 236 251 235 234 251 234 234 251 233 232 250 231 231 250 +230 230 250 229 228 250 227 227 249 226 225 249 224 224 249 222 222 249 221 220 248 219 218 248 +216 216 248 215 214 247 213 212 247 210 209 246 209 208 246 207 206 246 210 209 246 233 232 250 +253 253 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 202 200 215 +134 128 170 116 112 152 116 112 152 116 112 152 114 106 151 116 112 152 114 106 151 114 106 151 +114 106 151 114 106 151 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +130 124 168 131 126 164 239 238 247 255 255 255 255 255 255 251 251 254 237 236 251 236 236 251 +235 234 251 235 234 251 234 234 251 234 233 251 233 232 250 231 231 250 230 229 251 229 228 250 +227 227 249 226 225 249 224 224 249 223 222 249 221 221 248 219 218 248 218 217 247 215 215 247 +214 214 247 212 211 246 210 209 246 208 208 246 215 214 247 236 236 251 254 254 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 219 217 229 142 137 174 116 112 152 +116 112 152 114 106 151 114 106 151 114 106 151 114 106 151 114 106 151 114 106 151 114 106 151 +114 106 151 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +130 124 168 130 124 168 186 183 208 255 255 255 255 255 255 255 255 255 245 245 253 234 233 251 +233 232 250 231 231 250 231 231 250 230 230 250 229 229 250 228 227 250 227 227 249 226 225 249 +224 224 249 223 223 249 221 221 248 219 218 248 218 218 248 216 216 248 215 214 247 213 212 247 +212 211 246 212 211 246 225 225 249 244 244 253 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 219 217 229 142 137 174 114 106 151 114 106 151 114 106 151 +114 106 151 114 106 151 114 106 151 114 106 151 110 102 146 110 102 146 110 102 146 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +125 119 163 125 119 163 134 128 170 245 245 249 255 255 255 255 255 255 255 255 255 245 245 253 +230 230 250 229 228 250 228 227 250 227 227 249 226 225 249 225 225 249 224 224 249 223 222 249 +221 221 248 219 218 248 219 218 248 218 217 247 215 215 247 213 213 247 216 216 248 229 228 250 +242 241 253 253 253 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +254 254 254 219 217 229 142 137 174 114 108 147 114 106 151 114 106 151 110 102 146 110 102 146 +110 102 146 110 102 146 107 101 144 107 101 144 110 102 146 110 102 146 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +125 119 163 125 119 163 121 115 159 186 183 208 255 255 255 255 255 255 255 255 255 255 255 255 +252 252 254 240 240 252 230 230 250 225 225 249 223 223 249 222 222 249 221 220 248 219 218 248 +218 218 248 219 218 248 224 224 249 229 229 250 238 238 252 246 246 253 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 251 250 252 186 183 208 +131 126 164 110 102 146 110 102 146 110 102 146 107 101 144 110 102 146 110 102 146 110 102 146 +107 101 144 107 101 144 107 101 144 107 101 144 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +114 108 147 120 114 157 121 115 159 121 115 159 219 217 229 254 254 254 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 254 254 255 250 250 254 249 249 254 248 247 254 250 250 254 +253 252 254 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 231 231 244 161 160 183 120 114 157 114 108 147 +110 102 146 110 102 146 107 101 144 110 102 146 107 101 144 107 101 144 107 101 144 105 100 143 +107 101 144 105 99 142 88 84 126 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 120 114 157 120 114 157 120 114 157 121 115 159 219 217 229 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +254 254 254 231 231 244 186 183 208 131 126 164 107 101 144 110 102 146 107 101 144 107 101 144 +107 101 144 107 101 144 107 101 144 105 100 143 105 99 142 105 99 142 105 99 142 104 98 141 +104 97 144 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 113 109 162 116 112 152 116 112 152 116 112 152 120 114 157 186 183 208 251 250 252 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 245 245 249 206 201 229 165 162 202 +142 137 174 105 99 142 105 99 142 105 99 142 107 101 144 105 100 143 105 99 142 105 99 142 +104 98 141 104 98 141 104 98 141 102 97 140 102 97 140 102 97 140 100 95 138 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 114 106 151 114 106 151 114 106 151 114 106 151 114 108 147 121 115 159 +165 162 202 219 217 229 245 245 249 255 255 255 255 255 255 255 255 255 255 255 255 252 252 253 +231 231 244 219 217 229 186 183 208 161 160 183 134 128 170 114 108 147 107 101 144 107 101 144 +104 98 141 105 99 142 105 99 142 104 98 141 104 98 141 102 97 140 102 97 140 102 97 140 +102 97 140 102 97 140 100 95 138 100 95 138 102 95 138 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 114 106 151 114 106 151 110 102 146 114 108 147 110 102 146 +114 108 147 110 102 146 110 102 146 116 112 152 125 119 163 120 114 157 116 112 152 107 101 144 +107 101 144 105 99 142 107 101 144 107 101 144 105 99 142 104 98 141 104 98 141 104 98 141 +104 98 141 102 95 138 102 97 140 102 97 140 102 97 140 100 95 138 102 95 138 100 95 138 +100 95 138 100 95 138 100 95 138 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 110 102 146 110 102 146 110 102 146 107 101 144 +107 101 144 107 101 144 107 101 144 107 101 144 105 99 142 107 101 144 105 99 142 105 99 142 +104 98 141 104 98 141 104 98 141 102 97 140 102 97 140 102 95 138 102 95 138 102 95 138 +102 95 138 100 95 138 100 95 138 100 95 138 100 95 138 100 95 138 100 95 138 97 91 133 +100 95 138 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 104 97 144 104 97 144 104 97 144 +105 100 143 105 99 142 105 99 142 104 98 141 104 98 141 102 97 140 102 97 140 102 97 140 +102 97 140 102 97 140 100 95 138 102 95 138 100 95 138 100 95 138 100 95 138 97 94 132 +97 91 133 100 95 138 97 91 133 97 91 133 97 91 133 97 91 133 97 91 133 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 104 97 144 102 97 140 +102 97 140 102 97 140 102 97 140 102 97 140 102 97 140 100 95 138 100 95 138 100 95 138 +100 95 138 100 95 138 97 91 133 100 95 138 97 91 133 97 91 133 97 91 133 97 91 133 +97 91 133 97 91 133 97 91 133 95 88 132 100 85 132 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 88 84 126 +102 97 140 100 95 138 100 95 138 100 95 138 97 91 133 100 95 138 97 91 133 97 91 133 +97 91 133 97 91 133 97 91 133 97 91 133 97 91 133 97 91 133 95 88 132 95 88 132 +95 88 132 97 94 132 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 95 88 132 97 91 133 97 91 133 97 91 133 97 91 133 97 91 133 +95 88 132 95 88 132 95 88 132 95 88 132 95 88 132 95 88 132 72 70 123 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 diff --git a/drivers/video/logo/logo_oldzen_clut224.ppm b/drivers/video/logo/logo_oldzen_clut224.ppm new file mode 100644 index 00000000000..d16b347e329 --- /dev/null +++ b/drivers/video/logo/logo_oldzen_clut224.ppm @@ -0,0 +1,882 @@ +P3 +80 80 +255 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 43 56 0 47 62 0 2 3 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 28 37 105 174 196 105 174 196 0 61 80 0 2 3 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 20 27 61 146 173 167 209 223 167 209 223 124 186 205 0 96 126 +0 5 6 0 2 3 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 31 41 79 158 183 152 201 217 174 213 226 167 209 223 159 205 220 157 204 219 +27 122 151 0 19 25 0 9 11 0 2 3 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 5 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 31 41 65 149 175 152 201 217 162 207 221 167 209 223 164 208 222 167 209 223 172 212 225 +145 197 214 11 108 138 0 17 22 0 11 14 0 4 5 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 2 0 19 25 0 1 1 0 0 0 0 1 1 0 0 0 0 0 0 0 8 10 +70 152 178 159 205 220 164 208 222 164 208 222 169 211 224 164 208 222 164 208 222 169 211 224 +162 207 221 118 182 202 0 61 80 0 23 31 0 18 24 0 4 5 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 2 0 47 62 0 16 21 0 2 3 0 4 6 0 3 4 0 0 0 0 3 4 +33 126 155 169 211 224 172 212 225 179 216 228 167 209 223 172 212 225 164 208 222 179 216 228 +162 207 221 50 138 166 0 45 59 0 84 111 0 51 67 0 16 21 0 2 3 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 67 88 14 111 141 0 10 13 0 11 14 0 13 17 0 2 3 0 0 0 +0 5 7 16 112 142 135 192 210 164 208 222 157 204 219 162 207 221 167 209 223 159 205 220 +89 164 188 0 57 75 19 115 145 85 162 186 14 111 141 0 41 54 0 11 15 0 0 0 +0 8 11 0 83 109 0 31 40 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 40 52 75 156 181 5 103 133 0 15 20 0 16 22 0 10 13 0 0 0 +0 0 0 0 9 12 13 110 140 133 191 209 167 209 223 169 211 224 172 212 225 103 173 195 +0 62 81 0 96 126 145 197 214 140 195 212 27 122 151 0 48 63 0 7 10 0 9 11 +5 103 133 140 195 212 61 146 173 0 21 28 0 1 1 0 1 2 0 1 2 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 10 13 51 139 167 131 189 208 0 90 118 0 22 29 0 13 17 0 5 6 +0 0 0 0 0 1 0 11 15 0 95 124 140 195 212 169 211 224 97 169 192 0 69 91 +0 84 111 159 205 220 179 216 228 95 168 191 0 75 98 0 21 28 0 26 34 19 115 145 +138 193 211 164 208 222 154 203 218 39 130 159 0 10 13 0 8 10 0 6 8 0 2 2 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 1 2 0 87 114 140 195 212 131 189 208 25 119 149 0 29 38 0 7 10 +0 1 2 0 0 1 0 2 3 0 7 9 0 98 128 53 141 168 0 64 84 0 69 91 +152 201 217 177 215 227 56 143 170 0 69 91 0 23 30 0 62 81 68 151 177 149 200 216 +164 208 222 164 208 222 169 211 224 147 199 215 7 105 135 0 19 25 0 20 26 0 7 10 +0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 13 18 81 159 184 167 209 223 172 212 225 107 175 197 0 89 116 +0 18 23 0 4 5 0 1 2 0 2 3 0 4 6 0 14 19 0 40 52 26 120 150 +16 112 142 0 63 83 0 40 52 0 67 88 68 151 177 149 200 216 167 209 223 164 208 222 +177 215 227 174 213 226 167 209 223 172 212 225 145 197 214 10 107 137 0 26 35 0 21 28 +0 5 7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 2 +0 2 3 0 4 5 0 5 6 0 3 4 0 1 2 0 1 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 1 1 0 55 72 138 193 211 159 205 220 167 209 223 182 218 229 +58 144 171 0 86 112 0 35 46 0 14 19 0 10 13 0 14 19 0 24 32 0 39 51 +0 52 69 0 92 120 61 146 173 129 188 207 167 209 223 167 209 223 169 211 224 167 209 223 +177 215 227 167 209 223 164 208 222 172 212 225 164 208 222 133 191 209 0 77 101 0 25 33 +0 20 26 0 3 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 1 2 0 8 11 0 26 35 0 56 73 0 82 107 +3 101 131 26 120 150 32 125 154 7 105 135 0 92 120 0 75 98 0 40 52 0 13 18 +0 1 1 0 0 0 0 0 0 0 3 4 17 113 143 159 205 220 167 209 223 174 213 226 +167 209 223 147 199 215 99 170 193 61 146 173 58 144 171 56 143 170 63 147 174 68 151 177 +99 170 193 140 195 212 162 207 221 164 208 222 169 211 224 167 209 223 174 213 226 167 209 223 +172 212 225 167 209 223 169 211 224 164 208 222 164 208 222 113 179 200 0 72 94 0 46 60 +0 52 69 0 15 20 0 3 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 1 2 0 21 28 0 86 112 66 150 176 120 183 203 129 188 207 140 195 212 +152 201 217 162 207 221 164 208 222 152 201 217 142 196 213 135 192 210 122 184 204 105 174 196 +0 83 109 0 12 15 0 0 0 0 1 1 0 14 18 46 136 164 177 215 227 157 204 219 +167 209 223 169 211 224 169 211 224 164 208 222 167 209 223 169 211 224 174 213 226 174 213 226 +174 213 226 172 212 225 164 208 222 167 209 223 172 212 225 174 213 226 172 212 225 164 208 222 +174 213 226 169 211 224 169 211 224 162 207 221 91 165 189 0 79 103 0 64 84 36 128 157 +9 106 136 0 42 55 0 10 13 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 5 +0 48 63 40 131 160 142 196 213 172 212 225 172 212 225 164 208 222 169 211 224 177 215 227 +169 211 224 169 211 224 169 211 224 167 209 223 167 209 223 167 209 223 162 207 221 157 204 219 +164 208 222 89 164 188 0 51 67 0 4 6 0 5 7 0 18 23 23 118 148 135 192 210 +167 209 223 162 207 221 169 211 224 174 213 226 167 209 223 174 213 226 164 208 222 167 209 223 +164 208 222 162 207 221 169 211 224 172 212 225 162 207 221 169 211 224 174 213 226 169 211 224 +162 207 221 167 209 223 140 195 212 27 122 151 0 49 64 0 87 114 120 183 203 149 200 216 +42 133 161 0 66 86 0 19 25 0 2 3 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 5 0 37 48 27 122 151 +129 188 207 172 212 225 164 208 222 169 211 224 172 212 225 167 209 223 169 211 224 172 212 225 +167 209 223 172 212 225 174 213 226 177 215 227 172 212 225 169 211 224 167 209 223 169 211 224 +167 209 223 164 208 222 105 174 196 0 51 67 0 11 14 0 10 13 0 17 22 0 93 122 +118 182 202 169 211 224 174 213 226 164 208 222 174 213 226 164 208 222 169 211 224 167 209 223 +169 211 224 169 211 224 167 209 223 167 209 223 169 211 224 169 211 224 162 207 221 174 213 226 +118 182 202 55 142 169 0 80 105 0 49 64 51 139 167 140 195 212 154 203 218 91 165 189 +16 112 142 0 49 64 0 13 18 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 8 10 0 95 124 103 173 195 154 203 218 +172 212 225 162 207 221 172 212 225 172 212 225 169 211 224 164 208 222 174 213 226 177 215 227 +172 212 225 172 212 225 174 213 226 174 213 226 172 212 225 174 213 226 172 212 225 169 211 224 +172 212 225 169 211 224 174 213 226 77 157 182 0 24 32 0 23 31 0 18 24 0 16 21 +0 69 91 61 146 173 149 200 216 169 211 224 164 208 222 169 211 224 164 208 222 164 208 222 +169 211 224 169 211 224 164 208 222 169 211 224 169 211 224 152 201 217 91 165 189 37 129 158 +0 73 96 0 57 75 2 100 130 75 156 181 184 219 230 124 186 205 66 150 176 13 110 140 +0 54 70 0 20 26 0 5 7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 52 69 145 197 214 164 208 222 169 211 224 +174 213 226 164 208 222 172 212 225 172 212 225 174 213 226 169 211 224 172 212 225 167 209 223 +174 213 226 174 213 226 172 212 225 174 213 226 167 209 223 169 211 224 172 212 225 174 213 226 +177 215 227 174 213 226 174 213 226 164 208 222 0 89 116 0 30 39 0 41 54 0 22 29 +0 16 21 0 26 35 0 64 84 25 119 149 91 165 189 140 195 212 169 211 224 169 211 224 +172 212 225 159 205 220 124 186 205 70 152 178 21 116 146 0 75 98 0 50 66 0 50 66 +4 102 132 85 162 186 147 199 215 131 189 208 83 161 185 37 129 158 0 86 112 0 45 59 +0 14 18 0 5 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 14 18 60 145 172 167 209 223 167 209 223 +174 213 226 174 213 226 172 212 225 164 208 222 162 207 221 169 211 224 172 212 225 169 211 224 +172 212 225 162 207 221 169 211 224 169 211 224 174 213 226 174 213 226 172 212 225 157 204 219 +162 207 221 172 212 225 157 204 219 169 211 224 103 173 195 0 45 59 0 54 70 0 41 54 +0 20 26 0 14 19 0 14 19 0 19 25 0 28 37 0 47 62 0 58 76 0 63 83 +0 64 84 0 55 72 0 41 54 0 37 48 0 38 50 0 58 76 0 76 100 5 103 133 +58 144 171 70 152 178 48 137 165 27 122 151 0 86 112 0 44 58 0 25 33 0 9 12 +0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 72 94 140 195 212 177 215 227 +164 208 222 174 213 226 172 212 225 169 211 224 169 211 224 169 211 224 172 212 225 167 209 223 +142 196 213 113 179 200 103 173 195 91 165 189 103 173 195 131 189 208 162 207 221 172 212 225 +164 208 222 167 209 223 164 208 222 162 207 221 131 189 208 0 63 83 0 66 86 0 68 89 +0 20 27 0 11 14 0 12 15 0 22 29 0 38 50 0 50 66 0 55 72 0 57 75 +0 73 96 0 69 91 0 54 70 0 44 58 0 50 66 0 56 73 0 57 75 0 59 78 +0 49 64 0 40 52 0 39 51 0 37 48 0 23 30 0 10 13 0 4 6 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 18 23 74 155 180 172 212 225 +169 211 224 164 208 222 172 212 225 174 213 226 157 204 219 174 213 226 138 193 211 63 147 174 +5 103 133 0 64 84 0 57 75 0 57 75 0 66 86 0 86 112 32 125 154 120 183 203 +169 211 224 162 207 221 167 209 223 169 211 224 126 187 206 0 76 100 0 77 101 5 103 133 +0 31 41 0 8 11 0 3 4 0 5 7 0 16 21 0 31 40 0 54 70 0 75 98 +0 64 84 0 49 64 0 67 88 17 113 143 66 150 176 87 163 187 103 173 195 109 177 198 +77 157 182 51 139 167 0 87 114 0 28 37 0 5 7 0 1 2 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 0 75 98 129 188 207 +169 211 224 164 208 222 167 209 223 164 208 222 159 205 220 46 136 164 0 72 94 0 44 58 +0 64 84 6 104 134 36 128 157 42 133 161 11 108 138 0 84 111 0 49 64 0 62 81 +93 167 190 174 213 226 167 209 223 167 209 223 138 193 211 0 77 101 0 87 114 39 130 159 +0 57 75 0 14 19 0 2 2 0 0 0 0 2 2 0 6 9 0 11 14 0 10 13 +0 20 27 4 102 132 109 177 198 154 203 218 159 205 220 169 211 224 167 209 223 172 212 225 +174 213 226 159 205 220 138 193 211 89 164 188 0 57 75 0 5 7 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 13 53 141 168 +164 208 222 162 207 221 135 192 210 45 135 163 0 56 73 0 54 70 9 106 136 81 159 184 +169 211 224 133 191 209 83 161 185 53 141 168 29 123 152 9 106 136 1 99 129 0 48 63 +0 48 63 87 163 187 167 209 223 169 211 224 138 193 211 0 89 116 0 95 124 66 150 176 +0 77 101 0 20 26 0 2 3 0 0 0 0 0 0 0 0 0 0 1 2 0 21 28 +63 147 174 145 197 214 167 209 223 167 209 223 164 208 222 174 213 226 169 211 224 169 211 224 +177 215 227 177 215 227 169 211 224 177 215 227 147 199 215 40 131 160 0 26 34 0 4 6 +0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 46 60 +147 199 215 66 150 176 0 83 109 0 49 64 4 102 132 103 173 195 162 207 221 120 183 203 +75 156 181 29 123 152 0 98 128 0 67 88 0 47 62 0 38 50 0 34 45 0 31 41 +0 12 16 16 112 142 164 208 222 172 212 225 133 191 209 0 80 105 0 95 124 89 164 188 +0 93 122 0 26 34 0 4 5 0 0 0 0 0 0 0 0 0 0 23 31 51 139 167 +164 208 222 167 209 223 167 209 223 169 211 224 169 211 224 169 211 224 167 209 223 172 212 225 +159 205 220 164 208 222 167 209 223 174 213 226 159 205 220 157 204 219 65 149 175 0 34 45 +0 5 6 0 3 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 6 +0 84 111 0 35 46 0 43 56 23 118 148 145 197 214 135 192 210 83 161 185 32 125 154 +0 87 114 0 52 69 0 32 42 0 18 24 0 10 13 0 6 8 0 6 9 0 5 7 +0 4 6 0 80 105 152 201 217 159 205 220 129 188 207 0 68 89 14 111 141 99 170 193 +0 95 124 0 29 38 0 5 7 0 0 0 0 0 0 0 16 21 39 130 159 154 203 218 +172 212 225 169 211 224 169 211 224 174 213 226 167 209 223 167 209 223 167 209 223 172 212 225 +164 208 222 107 175 197 81 159 184 83 161 185 122 184 204 164 208 222 169 211 224 66 150 176 +0 23 31 0 10 13 0 5 7 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 3 4 0 11 14 0 58 76 36 128 157 85 162 186 43 134 162 3 101 131 0 58 76 +0 28 37 0 14 19 0 5 7 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 82 107 154 203 218 167 209 223 91 165 189 0 47 62 61 146 173 113 179 200 +0 90 118 0 27 36 0 4 5 0 0 0 0 3 4 9 106 136 149 200 216 164 208 222 +164 208 222 172 212 225 174 213 226 169 211 224 169 211 224 177 215 227 169 211 224 97 169 192 +0 89 116 0 46 60 0 46 60 0 43 56 0 62 81 27 122 151 133 191 209 159 205 220 +22 117 147 0 22 29 0 17 22 0 6 8 0 0 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 7 9 0 30 39 0 69 91 0 93 122 0 57 75 0 26 35 0 10 13 +0 2 3 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 5 7 27 122 151 164 208 222 164 208 222 7 105 135 0 51 67 97 169 192 93 167 190 +0 87 114 0 23 30 0 3 4 0 0 0 0 72 94 140 195 212 162 207 221 172 212 225 +164 208 222 167 209 223 169 211 224 169 211 224 172 212 225 154 203 218 45 135 163 0 55 72 +0 80 105 29 123 152 61 146 173 48 137 165 0 98 128 0 43 56 0 84 111 113 179 200 +135 192 210 0 87 114 0 25 33 0 26 34 0 5 7 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 1 1 0 10 13 0 23 31 0 28 37 0 15 20 0 4 6 0 1 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 +0 62 81 115 180 201 159 205 220 118 182 202 0 39 51 0 83 109 115 180 201 79 158 183 +0 69 91 0 18 24 0 1 2 0 12 16 87 163 187 167 209 223 169 211 224 167 209 223 +172 212 225 167 209 223 167 209 223 167 209 223 167 209 223 55 142 169 0 64 84 22 117 147 +157 204 219 157 204 219 101 172 194 53 141 168 19 115 145 0 75 98 0 29 38 14 111 141 +162 207 221 65 149 175 0 44 58 0 44 58 0 20 27 0 3 4 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 2 3 0 5 6 0 4 5 0 1 2 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 18 23 0 83 109 +109 177 198 167 209 223 145 197 214 13 110 140 0 24 32 29 123 152 115 180 201 56 143 170 +0 45 59 0 11 14 0 3 4 0 75 98 159 205 220 167 209 223 169 211 224 172 212 225 +169 211 224 169 211 224 172 212 225 174 213 226 85 162 186 0 64 84 19 115 145 164 208 222 +140 195 212 75 156 181 21 116 146 0 73 96 0 43 56 0 32 42 0 12 16 0 28 37 +124 186 205 131 189 208 0 87 114 0 38 50 0 51 67 0 14 18 0 2 2 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 14 19 0 26 34 0 8 10 0 1 2 +0 1 1 0 1 1 0 2 3 0 9 11 0 31 41 1 99 129 74 155 180 142 196 213 +164 208 222 169 211 224 63 147 174 0 28 37 0 57 75 66 150 176 95 168 191 19 115 145 +0 30 39 0 5 7 0 17 22 74 155 180 162 207 221 167 209 223 174 213 226 172 212 225 +172 212 225 167 209 223 169 211 224 169 211 224 0 87 114 0 86 112 140 195 212 159 205 220 +66 150 176 4 102 132 0 55 72 0 23 31 0 9 12 0 5 7 0 3 4 0 4 5 +26 120 150 164 208 222 43 134 162 0 28 37 0 76 100 0 32 42 0 7 9 0 0 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 21 28 87 163 187 111 178 199 61 146 173 +46 136 164 46 136 164 70 152 178 118 182 202 174 213 226 167 209 223 167 209 223 167 209 223 +159 205 220 74 155 180 0 40 52 0 37 48 33 126 155 85 162 186 43 134 162 0 69 91 +0 13 18 0 6 8 0 95 124 138 193 211 164 208 222 162 207 221 172 212 225 162 207 221 +169 211 224 169 211 224 162 207 221 51 139 167 0 46 60 91 165 189 162 207 221 95 168 191 +1 99 129 0 42 55 0 13 17 0 2 3 0 0 0 0 0 0 0 0 0 0 0 0 +0 47 62 126 187 206 111 178 199 0 51 67 0 63 83 0 71 93 0 20 26 0 2 2 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 4 6 25 119 149 159 205 220 169 211 224 +172 212 225 172 212 225 164 208 222 167 209 223 172 212 225 172 212 225 167 209 223 162 207 221 +63 147 174 0 54 70 0 47 62 19 115 145 81 159 184 61 146 173 0 95 124 0 34 45 +0 4 5 0 29 38 77 157 182 157 204 219 172 212 225 167 209 223 164 208 222 162 207 221 +174 213 226 164 208 222 113 179 200 0 61 80 18 114 144 184 219 230 122 184 204 29 123 152 +0 49 64 0 14 19 0 2 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 15 20 77 157 182 145 197 214 0 93 122 0 47 62 4 102 132 0 38 50 0 6 9 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 68 89 138 193 211 169 211 224 +179 216 228 172 212 225 164 208 222 174 213 226 169 211 224 174 213 226 124 186 205 39 130 159 +0 48 63 0 67 88 53 141 168 103 173 195 83 161 185 16 112 142 0 48 63 0 10 13 +0 5 7 12 109 139 149 200 216 169 211 224 174 213 226 169 211 224 172 212 225 174 213 226 +167 209 223 149 200 216 18 114 144 0 55 72 159 205 220 147 199 215 68 151 177 0 80 105 +0 21 28 0 3 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 6 8 46 136 164 162 207 221 39 130 159 0 33 44 11 108 138 0 61 80 0 14 18 +0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 25 33 95 168 191 164 208 222 +172 212 225 162 207 221 169 211 224 167 209 223 162 207 221 172 212 225 55 142 169 0 29 38 +0 44 58 46 136 164 129 188 207 93 167 190 16 112 142 0 55 72 0 14 19 0 2 2 +0 64 84 118 182 202 172 212 225 174 213 226 169 211 224 172 212 225 167 209 223 167 209 223 +159 205 220 85 162 186 0 57 75 42 133 161 190 222 232 111 178 199 19 115 145 0 43 56 +0 10 13 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 4 5 33 126 155 162 207 221 83 161 185 0 32 42 2 100 130 0 84 111 0 23 31 +0 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 0 5 7 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 8 43 134 162 167 209 223 +174 213 226 169 211 224 164 208 222 169 211 224 177 215 227 164 208 222 126 187 206 48 137 165 +0 82 107 0 42 55 0 59 78 0 76 100 0 39 51 0 13 18 0 7 10 0 69 91 +138 193 211 167 209 223 164 208 222 169 211 224 179 216 228 167 209 223 177 215 227 167 209 223 +131 189 208 0 75 98 0 92 120 152 201 217 122 184 204 39 130 159 0 63 83 0 18 24 +0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 2 3 34 127 156 167 209 223 131 189 208 0 42 55 0 80 105 13 110 140 0 38 50 +0 5 7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 8 0 18 24 0 0 0 +0 1 2 0 3 4 0 2 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 86 112 145 197 214 +167 209 223 167 209 223 169 211 224 169 211 224 167 209 223 164 208 222 164 208 222 164 208 222 +152 201 217 61 146 173 0 86 112 0 43 56 0 25 33 0 40 52 12 109 139 122 184 204 +167 209 223 167 209 223 174 213 226 162 207 221 174 213 226 169 211 224 167 209 223 149 200 216 +12 109 139 0 58 76 83 161 185 157 204 219 75 156 181 0 90 118 0 33 44 0 7 9 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 3 4 33 126 155 172 212 225 162 207 221 0 50 66 0 73 96 30 124 153 0 55 72 +0 9 12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 14 0 40 52 0 1 2 +0 6 8 0 9 12 0 7 10 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 36 47 126 187 206 +169 211 224 174 213 226 169 211 224 172 212 225 174 213 226 169 211 224 169 211 224 164 208 222 +174 213 226 169 211 224 135 192 210 83 161 185 75 156 181 101 172 194 142 196 213 172 212 225 +167 209 223 174 213 226 167 209 223 169 211 224 169 211 224 172 212 225 133 191 209 21 116 146 +0 52 69 56 143 170 164 208 222 120 183 203 19 115 145 0 48 63 0 13 18 0 2 2 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 4 5 37 129 158 167 209 223 162 207 221 0 61 80 0 79 103 46 136 164 0 71 93 +0 13 18 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 11 0 61 80 0 6 8 +0 10 13 0 20 26 0 14 19 0 3 4 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 11 65 149 175 +174 213 226 157 204 219 167 209 223 177 215 227 172 212 225 164 208 222 164 208 222 167 209 223 +162 207 221 169 211 224 159 205 220 179 216 228 159 205 220 157 204 219 149 200 216 164 208 222 +169 211 224 159 205 220 167 209 223 174 213 226 157 204 219 66 150 176 0 82 107 0 50 66 +66 150 176 164 208 222 142 196 213 60 145 172 0 75 98 0 22 29 0 5 6 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 6 9 51 139 167 167 209 223 172 212 225 0 84 111 0 64 84 51 139 167 0 84 111 +0 18 23 0 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 6 0 95 124 0 23 31 +0 10 13 0 29 38 0 24 32 0 6 8 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 64 84 +21 116 146 0 76 100 0 61 80 0 54 70 0 56 73 0 77 101 23 118 148 113 179 200 +157 204 219 172 212 225 169 211 224 167 209 223 167 209 223 91 165 189 0 61 80 0 55 72 +0 82 107 0 95 124 0 89 116 0 62 81 0 45 59 0 43 56 0 95 124 131 189 208 +167 209 223 118 182 202 45 135 163 0 83 109 0 27 36 0 5 7 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 23 30 95 168 191 167 209 223 174 213 226 3 101 131 0 45 59 46 136 164 2 100 130 +0 23 30 0 3 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 5 23 118 148 0 61 80 +0 9 11 0 36 47 0 32 42 0 6 9 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 4 +0 6 8 0 11 14 0 39 51 0 82 107 3 101 131 0 80 105 0 55 72 0 55 72 +34 127 156 131 189 208 169 211 224 169 211 224 167 209 223 105 174 196 0 61 80 0 33 44 +0 63 83 0 54 70 0 66 86 0 95 124 0 84 111 29 123 152 109 177 198 118 182 202 +70 152 178 25 119 149 0 76 100 0 33 44 0 7 10 0 1 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 61 80 152 201 217 169 211 224 164 208 222 3 101 131 0 48 63 53 141 168 10 107 137 +0 27 36 0 4 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 4 21 116 146 25 119 149 +0 9 12 0 37 48 0 41 54 0 13 18 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 16 21 0 62 81 23 118 148 45 135 163 36 128 157 0 98 128 0 58 76 +0 38 50 3 101 131 129 188 207 172 212 225 167 209 223 154 203 218 29 123 152 0 48 63 +74 155 180 46 136 164 36 128 157 30 124 153 0 48 63 0 55 72 12 109 139 13 110 140 +0 84 111 0 51 67 0 23 30 0 7 10 0 1 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 +32 125 154 169 211 224 169 211 224 169 211 224 9 106 136 0 48 63 60 145 172 16 112 142 +0 31 40 0 5 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 82 107 85 162 186 +0 24 32 0 28 37 0 50 66 0 25 33 0 2 2 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 6 8 0 26 34 0 52 69 0 66 86 0 56 73 0 45 59 0 41 54 +0 34 45 0 23 31 5 103 133 152 201 217 174 213 226 172 212 225 111 178 199 0 50 66 +18 114 144 33 126 155 0 98 128 0 52 69 0 19 25 0 23 31 0 33 44 0 41 54 +0 25 33 0 14 18 0 5 6 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 20 27 +120 183 203 172 212 225 169 211 224 167 209 223 4 102 132 0 56 73 72 153 179 21 116 146 +0 34 45 0 6 8 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 48 63 126 187 206 +0 89 116 0 23 31 0 59 78 0 34 45 0 5 7 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 1 2 0 6 8 0 12 16 0 12 16 0 7 9 0 6 8 0 6 8 +0 6 8 0 7 9 0 20 27 93 167 190 172 212 225 172 212 225 167 209 223 7 105 135 +0 56 73 16 112 142 0 59 78 0 12 15 0 29 38 0 29 38 0 8 10 0 12 15 +0 9 12 0 4 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 8 19 115 145 +167 209 223 172 212 225 172 212 225 167 209 223 0 82 107 0 92 120 107 175 197 29 123 152 +0 38 50 0 7 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 23 31 105 174 196 +72 153 179 0 36 47 0 54 70 0 54 70 0 11 15 0 1 2 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 1 1 0 3 4 16 112 142 162 207 221 172 212 225 169 211 224 53 141 168 +0 40 52 6 104 134 0 55 72 0 8 11 0 36 47 0 66 86 0 3 4 0 7 10 +0 9 11 0 5 6 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 3 0 63 83 131 189 208 +167 209 223 172 212 225 172 212 225 164 208 222 0 63 83 7 105 135 131 189 208 26 120 150 +0 37 48 0 7 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 13 77 157 182 +135 192 210 0 90 118 0 40 52 0 75 98 0 21 28 0 4 5 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 1 1 0 90 118 157 204 219 172 212 225 169 211 224 97 169 192 +0 41 54 3 101 131 0 73 96 0 11 15 0 46 60 45 135 163 0 15 20 0 10 13 +0 16 22 0 11 15 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 55 72 93 167 190 167 209 223 +172 212 225 164 208 222 167 209 223 135 192 210 0 48 63 32 125 154 126 187 206 17 113 143 +0 32 42 0 6 8 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 3 17 113 143 +154 203 218 79 158 183 0 47 62 0 59 78 0 39 51 0 7 10 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 86 112 162 207 221 167 209 223 169 211 224 149 200 216 +0 52 69 0 90 118 5 103 133 0 17 22 0 52 69 118 182 202 0 90 118 0 13 18 +0 31 41 0 20 26 0 4 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 1 0 62 81 97 169 192 167 209 223 174 213 226 +172 212 225 179 216 228 164 208 222 77 157 182 0 41 54 65 149 175 109 177 198 7 105 135 +0 27 36 0 5 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 43 56 +159 205 220 147 199 215 40 131 160 0 36 47 0 59 78 0 23 31 0 2 3 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 1 1 4 102 132 167 209 223 164 208 222 172 212 225 174 213 226 +0 68 89 0 75 98 26 120 150 0 26 35 0 49 64 135 192 210 126 187 206 10 107 137 +0 23 30 0 14 18 0 6 9 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 1 1 0 13 17 7 105 135 149 200 216 164 208 222 167 209 223 177 215 227 +167 209 223 164 208 222 162 207 221 17 113 143 0 61 80 138 193 211 87 163 187 0 89 116 +0 19 25 0 2 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 13 +95 168 191 172 212 225 135 192 210 0 98 128 0 31 40 0 35 46 0 11 15 0 0 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 7 9 58 144 171 167 209 223 174 213 226 169 211 224 172 212 225 +0 79 103 0 69 91 43 134 162 0 43 56 0 32 42 99 170 193 167 209 223 162 207 221 +45 135 163 0 69 91 0 21 28 0 7 10 0 3 4 0 4 5 0 6 8 0 8 11 +0 31 40 0 83 109 68 151 177 154 203 218 162 207 221 167 209 223 172 212 225 172 212 225 +172 212 225 167 209 223 142 196 213 0 72 94 9 106 136 179 216 228 65 149 175 0 72 94 +0 13 18 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +19 115 145 167 209 223 167 209 223 120 183 203 0 50 66 0 28 37 0 23 30 0 5 6 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 1 0 40 52 120 183 203 164 208 222 169 211 224 174 213 226 169 211 224 +0 82 107 0 77 101 61 146 173 0 67 88 0 18 24 58 144 171 167 209 223 167 209 223 +157 204 219 122 184 204 72 153 179 48 137 165 36 128 157 37 129 158 42 133 161 56 143 170 +99 170 193 147 199 215 174 213 226 172 212 225 169 211 224 169 211 224 172 212 225 164 208 222 +167 209 223 167 209 223 61 146 173 0 39 51 81 159 184 140 195 212 39 130 159 0 54 70 +0 8 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 47 62 133 191 209 172 212 225 169 211 224 91 165 189 0 44 58 0 23 31 0 12 16 +0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 9 11 25 119 149 154 203 218 159 205 220 162 207 221 174 213 226 177 215 227 +0 76 100 0 77 101 75 156 181 1 99 129 0 13 17 19 115 145 174 213 226 162 207 221 +162 207 221 169 211 224 172 212 225 167 209 223 167 209 223 167 209 223 167 209 223 169 211 224 +167 209 223 167 209 223 169 211 224 167 209 223 172 212 225 167 209 223 167 209 223 172 212 225 +174 213 226 145 197 214 2 100 130 0 64 84 198 226 235 109 177 198 14 111 141 0 40 52 +0 4 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 6 8 37 129 158 167 209 223 164 208 222 172 212 225 99 170 193 0 55 72 0 20 26 +0 6 8 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 6 9 7 105 135 140 195 212 164 208 222 177 215 227 172 212 225 159 205 220 174 213 226 +0 72 94 3 101 131 105 174 196 6 104 134 0 15 20 0 55 72 113 179 200 172 212 225 +172 212 225 169 211 224 169 211 224 169 211 224 172 212 225 174 213 226 174 213 226 174 213 226 +174 213 226 174 213 226 164 208 222 169 211 224 172 212 225 174 213 226 164 208 222 169 211 224 +162 207 221 65 149 175 0 48 63 75 156 181 164 208 222 68 151 177 0 79 103 0 23 30 +0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 1 0 47 62 107 175 197 169 211 224 164 208 222 177 215 227 99 170 193 0 76 100 +0 14 18 0 4 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 9 +5 103 133 120 183 203 174 213 226 167 209 223 164 208 222 167 209 223 172 212 225 157 204 219 +0 54 70 27 122 151 124 186 205 6 104 134 0 23 30 0 15 20 48 137 165 152 201 217 +172 212 225 172 212 225 172 212 225 169 211 224 172 212 225 177 215 227 174 213 226 174 213 226 +174 213 226 172 212 225 169 211 224 169 211 224 164 208 222 169 211 224 169 211 224 174 213 226 +113 179 200 0 75 98 9 106 136 179 216 228 113 179 200 30 124 153 0 48 63 0 11 15 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 6 9 22 117 147 162 207 221 157 204 219 169 211 224 172 212 225 122 184 204 +37 129 158 0 34 45 0 5 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 4 0 31 41 21 116 146 +142 196 213 172 212 225 172 212 225 177 215 227 164 208 222 169 211 224 164 208 222 115 180 201 +0 45 59 48 137 165 113 179 200 6 104 134 0 23 30 0 5 6 0 55 72 133 191 209 +162 207 221 159 205 220 169 211 224 169 211 224 172 212 225 174 213 226 172 212 225 172 212 225 +174 213 226 172 212 225 167 209 223 174 213 226 157 204 219 174 213 226 169 211 224 147 199 215 +0 93 122 0 75 98 118 182 202 169 211 224 66 150 176 0 87 114 0 27 36 0 5 7 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 32 42 99 170 193 174 213 226 169 211 224 164 208 222 164 208 222 +152 201 217 95 168 191 14 111 141 0 41 54 0 11 14 0 3 4 0 1 1 0 0 0 +0 0 0 0 0 1 0 2 3 0 8 11 0 47 62 29 123 152 103 173 195 152 201 217 +164 208 222 162 207 221 172 212 225 172 212 225 164 208 222 167 209 223 172 212 225 60 145 172 +0 46 60 97 169 192 99 170 193 0 96 126 0 21 28 0 2 3 0 7 10 21 116 146 +169 211 224 169 211 224 164 208 222 174 213 226 174 213 226 172 212 225 169 211 224 169 211 224 +169 211 224 169 211 224 164 208 222 164 208 222 179 216 228 164 208 222 145 197 214 18 114 144 +0 52 69 79 158 183 167 209 223 109 177 198 18 114 144 0 44 58 0 12 16 0 1 2 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 1 1 0 64 84 131 189 208 159 205 220 167 209 223 167 209 223 +172 212 225 169 211 224 174 213 226 177 215 227 111 178 199 68 151 177 40 131 160 14 111 141 +12 109 139 34 127 156 77 157 182 126 187 206 167 209 223 169 211 224 167 209 223 174 213 226 +172 212 225 164 208 222 174 213 226 169 211 224 172 212 225 172 212 225 157 204 219 0 84 111 +0 95 124 164 208 222 75 156 181 0 75 98 0 17 22 0 2 3 0 0 0 0 5 7 +32 125 154 145 197 214 164 208 222 169 211 224 172 212 225 174 213 226 172 212 225 169 211 224 +172 212 225 172 212 225 172 212 225 174 213 226 152 201 217 97 169 192 0 87 114 0 50 66 +77 157 182 174 213 226 111 178 199 36 128 157 0 54 70 0 16 21 0 2 3 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 4 5 4 102 132 135 192 210 169 211 224 169 211 224 +172 212 225 172 212 225 172 212 225 167 209 223 169 211 224 169 211 224 167 209 223 167 209 223 +174 213 226 167 209 223 164 208 222 169 211 224 174 213 226 174 213 226 172 212 225 167 209 223 +169 211 224 167 209 223 174 213 226 169 211 224 174 213 226 162 207 221 81 159 184 0 49 64 +79 158 183 167 209 223 48 137 165 0 61 80 0 10 13 0 1 1 0 0 0 0 0 0 +0 11 15 4 102 132 120 183 203 164 208 222 169 211 224 169 211 224 169 211 224 172 212 225 +169 211 224 169 211 224 172 212 225 118 182 202 53 141 168 0 67 88 0 79 103 79 158 183 +174 213 226 124 186 205 45 135 163 0 77 101 0 23 31 0 5 6 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 12 16 11 108 138 142 196 213 162 207 221 +167 209 223 167 209 223 169 211 224 172 212 225 164 208 222 162 207 221 172 212 225 174 213 226 +169 211 224 172 212 225 174 213 226 174 213 226 174 213 226 172 212 225 174 213 226 172 212 225 +172 212 225 169 211 224 169 211 224 167 209 223 169 211 224 131 189 208 0 92 120 0 76 100 +167 209 223 113 179 200 17 113 143 0 44 58 0 7 9 0 0 0 0 0 0 0 0 0 +0 0 1 0 11 14 0 61 80 34 127 156 95 168 191 129 188 207 133 191 209 135 192 210 +118 182 202 83 161 185 39 130 159 0 76 100 0 49 64 22 117 147 135 192 210 164 208 222 +101 172 194 39 130 159 0 80 105 0 31 41 0 6 8 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 15 3 101 131 142 196 213 +172 212 225 177 215 227 167 209 223 162 207 221 164 208 222 169 211 224 172 212 225 174 213 226 +174 213 226 172 212 225 169 211 224 174 213 226 174 213 226 169 211 224 164 208 222 164 208 222 +169 211 224 167 209 223 174 213 226 167 209 223 157 204 219 27 122 151 0 58 76 83 161 185 +177 215 227 70 152 178 0 84 111 0 26 35 0 3 4 0 0 0 0 0 0 0 0 0 +0 0 0 0 1 1 0 6 8 0 16 21 0 39 51 0 52 69 0 58 76 0 63 83 +0 51 67 0 43 56 0 43 56 0 86 112 97 169 192 164 208 222 142 196 213 95 168 191 +22 117 147 0 71 93 0 29 38 0 8 10 0 0 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 5 0 69 91 +115 180 201 145 197 214 164 208 222 169 211 224 172 212 225 164 208 222 154 203 218 167 209 223 +174 213 226 172 212 225 172 212 225 169 211 224 172 212 225 174 213 226 172 212 225 172 212 225 +174 213 226 167 209 223 167 209 223 154 203 218 26 120 150 0 54 70 68 151 177 187 220 231 +105 174 196 17 113 143 0 48 63 0 11 14 0 0 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 2 3 0 11 15 0 23 31 0 39 51 0 62 81 0 72 94 +1 99 129 46 136 164 111 178 199 124 186 205 97 169 192 58 144 171 29 123 152 0 87 114 +0 43 56 0 17 22 0 5 7 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 4 5 +0 42 55 40 131 160 133 191 209 162 207 221 162 207 221 167 209 223 169 211 224 169 211 224 +172 212 225 172 212 225 169 211 224 172 212 225 169 211 224 169 211 224 169 211 224 169 211 224 +172 212 225 172 212 225 124 186 205 22 117 147 0 56 73 29 123 152 162 207 221 135 192 210 +40 131 160 0 68 89 0 21 28 0 4 5 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 1 2 0 11 14 0 26 35 0 52 69 0 83 109 +4 102 132 17 113 143 19 115 145 10 107 137 0 98 128 0 73 96 0 48 63 0 25 33 +0 9 12 0 2 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 +0 5 7 0 22 29 0 75 98 46 136 164 124 186 205 169 211 224 167 209 223 167 209 223 +172 212 225 169 211 224 169 211 224 167 209 223 169 211 224 169 211 224 167 209 223 167 209 223 +147 199 215 55 142 169 0 86 112 0 59 78 79 158 183 147 199 215 138 193 211 70 152 178 +0 86 112 0 33 44 0 7 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 5 6 0 13 17 0 22 29 +0 33 44 0 39 51 0 40 52 0 33 44 0 28 37 0 19 25 0 10 13 0 4 6 +0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 2 0 8 10 0 16 21 0 23 30 0 57 75 13 110 140 75 156 181 147 199 215 +177 215 227 167 209 223 164 208 222 167 209 223 174 213 226 147 199 215 85 162 186 30 124 153 +0 69 91 0 42 55 0 84 111 131 189 208 177 215 227 124 186 205 60 145 172 0 96 126 +0 38 50 0 9 11 0 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 3 4 +0 6 8 0 6 9 0 8 10 0 7 9 0 4 5 0 2 3 0 0 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 1 1 0 6 9 0 18 24 0 24 32 0 25 33 0 29 38 0 36 47 +0 56 73 0 72 94 0 77 101 0 72 94 0 57 75 0 44 58 0 44 58 0 57 75 +4 102 132 83 161 185 149 200 216 133 191 209 75 156 181 21 116 146 0 71 93 0 32 42 +0 7 9 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 1 0 3 4 0 13 18 0 27 36 0 42 55 0 49 64 +0 54 70 0 61 80 0 64 84 0 80 105 4 102 132 17 113 143 43 134 162 85 162 186 +118 182 202 95 168 191 61 146 173 26 120 150 0 87 114 0 49 64 0 23 30 0 8 10 +0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 5 7 0 14 18 0 29 38 +0 50 66 0 69 91 0 95 124 14 111 141 26 120 150 33 126 155 34 127 156 25 119 149 +9 106 136 0 93 122 0 73 96 0 49 64 0 25 33 0 11 15 0 4 6 0 1 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 5 6 +0 12 15 0 19 25 0 26 34 0 36 47 0 45 59 0 46 60 0 43 56 0 41 54 +0 33 44 0 24 32 0 16 22 0 10 13 0 5 6 0 1 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 1 1 0 2 3 0 4 5 0 5 7 0 7 9 0 7 10 0 6 9 +0 3 4 0 3 4 0 2 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 + +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 diff --git a/drivers/video/logo/logo_slackware_clut224.ppm b/drivers/video/logo/logo_slackware_clut224.ppm new file mode 100644 index 00000000000..fbf39203bdd --- /dev/null +++ b/drivers/video/logo/logo_slackware_clut224.ppm @@ -0,0 +1,1123 @@ +P3 +79 80 +255 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 2 3 6 8 10 17 12 16 26 12 16 26 +21 23 31 23 26 35 23 26 35 19 21 29 19 21 29 12 16 26 +8 10 17 2 3 6 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 2 3 6 23 26 35 +43 50 70 53 65 105 53 65 105 68 84 132 72 90 145 72 90 145 +69 93 168 72 96 170 69 93 168 69 93 168 72 90 145 72 90 145 +68 84 132 53 65 105 53 65 105 43 50 70 23 26 35 4 5 10 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 8 10 17 31 38 62 53 65 105 72 90 145 72 95 165 +69 93 168 71 96 171 71 96 171 74 98 173 75 99 174 79 102 174 +87 109 178 87 109 178 87 109 178 87 109 178 79 102 174 77 101 175 +74 99 174 71 96 171 71 96 171 69 93 168 72 95 165 72 90 145 +53 65 105 31 38 62 8 10 17 0 0 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 27 32 46 +46 54 81 72 90 145 73 97 172 71 96 171 69 93 168 77 101 175 +108 128 187 132 148 198 144 158 201 159 170 206 166 177 212 176 187 218 +189 198 224 201 208 230 201 208 230 192 201 226 180 190 220 168 179 211 +160 171 208 147 161 203 132 148 198 108 128 187 79 102 174 69 93 168 +71 96 171 72 96 171 72 90 145 53 65 105 27 32 46 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 19 21 29 53 65 105 69 93 168 +73 97 172 74 98 173 90 112 180 124 141 194 164 175 209 191 199 224 +209 215 232 229 232 239 232 235 242 232 235 242 232 235 242 232 235 242 +232 235 242 229 232 239 229 232 239 232 235 242 232 235 242 232 235 242 +232 235 242 232 235 242 232 235 242 214 219 236 192 201 226 166 177 212 +126 145 198 91 113 180 75 99 174 73 97 172 69 93 168 53 65 105 +19 21 29 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 12 16 26 46 54 81 69 93 168 69 93 168 79 102 174 +117 135 190 176 187 218 214 219 236 221 226 239 221 226 239 229 232 239 +221 226 239 221 226 239 221 226 239 221 226 239 221 226 239 221 226 239 +221 226 239 221 226 239 221 226 239 221 226 239 221 226 239 221 226 239 +221 226 239 221 226 239 221 226 239 221 226 239 229 232 239 229 232 239 +221 226 239 218 222 237 184 193 222 124 141 194 87 109 178 71 96 171 +72 90 145 46 54 81 12 16 26 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 5 10 +43 50 70 68 84 132 71 96 171 79 102 174 126 145 198 180 190 220 +218 222 237 221 226 239 218 222 237 218 222 237 218 222 237 218 222 237 +218 222 237 218 222 237 218 222 237 218 222 237 218 222 237 218 222 237 +218 222 237 218 222 237 218 222 237 218 222 237 218 222 237 218 222 237 +218 222 237 218 222 237 218 222 237 218 222 237 218 222 237 218 222 237 +218 222 237 221 226 239 221 226 239 221 226 239 185 195 223 136 152 200 +87 109 178 71 96 171 68 84 132 46 54 81 8 10 17 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 27 32 46 68 84 132 +69 93 168 77 101 175 132 148 198 191 199 224 213 218 233 218 222 237 +214 219 236 213 218 233 214 219 236 214 219 236 213 218 233 213 218 233 +214 219 236 214 219 236 214 219 236 214 219 236 214 219 236 214 219 236 +214 219 236 214 219 236 214 219 236 214 219 236 214 219 236 214 219 236 +214 219 236 214 219 236 214 219 236 214 219 236 214 219 236 214 219 236 +214 219 236 214 219 236 214 219 236 214 219 236 218 222 237 214 219 236 +192 201 226 141 156 201 79 102 174 69 93 168 68 84 132 23 26 35 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 31 38 62 72 90 145 71 96 171 +96 117 181 168 179 211 213 218 233 213 218 233 209 215 234 209 215 232 +209 215 232 209 215 232 209 215 232 209 215 232 209 215 232 209 215 232 +209 215 232 209 215 232 209 215 232 209 215 232 209 215 232 209 215 234 +209 215 234 209 215 234 209 215 234 209 215 234 209 215 234 209 215 234 +209 215 234 209 215 234 209 215 234 209 215 234 209 215 234 209 215 234 +209 215 234 209 215 234 209 215 234 209 215 234 209 215 234 209 215 234 +214 219 236 214 219 236 176 187 218 108 128 187 71 96 171 72 90 145 +31 38 62 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 1 2 3 43 50 70 72 90 145 74 98 172 124 141 194 +191 199 224 209 215 232 205 212 231 205 212 231 205 212 231 205 212 231 +205 212 231 205 212 231 205 212 231 205 212 231 205 212 231 205 212 231 +205 212 231 205 212 231 205 212 231 205 212 231 205 212 231 205 212 231 +205 212 231 205 212 231 205 212 231 205 212 231 205 212 231 205 212 231 +205 212 231 205 212 231 205 212 231 205 212 231 205 212 231 205 212 231 +205 212 231 205 212 231 205 212 231 205 212 231 205 212 231 205 212 231 +205 212 231 205 212 231 209 215 234 197 204 227 136 152 200 75 99 174 +72 90 145 43 50 70 1 2 3 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +5 7 12 53 65 105 69 93 168 87 109 178 160 171 208 201 208 230 +201 208 230 201 208 230 201 208 230 201 208 230 201 208 230 201 208 230 +201 208 230 201 208 230 201 208 230 201 208 230 201 208 230 201 208 230 +201 208 230 201 208 230 201 208 230 201 208 230 201 208 230 201 208 230 +201 208 230 201 208 230 201 208 230 201 208 230 201 208 230 201 208 230 +201 208 230 201 208 230 201 208 230 201 208 230 201 208 230 201 208 230 +201 208 230 201 208 230 201 208 230 201 208 230 201 208 230 201 208 230 +201 208 230 201 208 230 201 208 230 205 211 230 205 212 231 166 177 212 +96 117 181 69 93 168 53 65 105 7 8 13 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 13 21 +53 65 105 69 93 168 87 109 178 166 177 212 201 208 230 197 204 227 +197 204 227 197 204 227 197 204 227 197 204 227 197 204 227 197 204 227 +197 204 227 197 204 227 197 204 227 197 204 227 197 204 227 197 204 227 +197 204 227 197 204 227 197 204 227 197 204 227 197 204 227 197 204 227 +197 204 227 197 204 227 197 204 227 197 204 227 197 204 227 197 204 227 +198 205 228 198 205 228 198 205 228 198 205 228 198 205 228 198 205 228 +198 205 228 198 205 228 198 205 228 198 205 228 198 205 228 198 205 228 +198 205 228 198 205 228 198 205 228 198 205 228 198 205 228 205 211 230 +176 187 218 91 113 180 69 93 168 53 65 105 11 13 21 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 8 10 17 53 65 105 +69 93 168 87 109 178 160 171 208 197 204 227 192 201 226 192 201 226 +192 201 226 192 201 226 192 201 226 192 201 226 192 201 226 192 201 226 +192 201 226 192 201 226 192 201 226 192 201 226 192 201 226 192 201 226 +192 201 226 192 201 226 192 201 226 192 201 226 192 201 226 192 201 226 +192 201 226 192 201 226 192 201 226 192 201 226 192 201 226 192 201 226 +192 201 226 192 201 226 192 201 226 192 201 226 192 201 226 192 201 226 +192 201 226 192 201 226 192 201 226 192 201 226 192 201 226 192 201 226 +192 201 226 192 201 226 192 201 226 192 201 226 192 201 226 194 201 224 +198 205 228 169 180 211 91 113 180 71 96 169 53 65 105 5 7 12 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 1 2 3 46 54 81 69 93 168 +87 109 178 160 171 208 192 201 226 189 197 224 189 197 224 189 197 224 +189 197 224 189 197 224 189 197 224 189 197 224 189 197 224 189 197 224 +189 198 224 189 198 224 189 198 224 189 198 224 189 198 224 189 198 224 +189 198 224 189 198 224 189 198 224 189 198 224 189 198 224 189 198 224 +188 198 224 188 198 224 189 198 224 189 197 224 189 198 224 189 198 224 +189 198 224 189 198 224 189 198 224 189 198 224 189 198 224 189 198 224 +189 198 224 189 198 224 189 198 224 189 198 224 189 198 224 189 198 224 +189 198 224 189 198 224 189 198 224 189 198 224 189 198 224 189 198 224 +189 198 224 194 201 224 166 177 212 91 113 180 69 93 168 46 54 81 +1 2 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 31 38 62 72 95 165 79 102 174 +153 166 206 189 197 224 184 193 222 184 193 222 184 193 222 184 193 222 +184 193 222 184 193 222 184 193 222 184 193 222 184 193 222 184 193 222 +184 193 220 184 193 222 185 195 223 185 195 223 185 195 223 184 193 222 +185 195 222 185 195 223 185 195 223 185 195 223 185 195 223 185 195 223 +185 195 223 185 195 223 185 195 223 185 195 223 185 195 223 185 195 223 +185 195 222 184 193 222 185 195 223 185 195 223 185 195 223 185 195 223 +185 195 222 185 195 223 185 195 223 185 195 223 185 195 222 185 195 223 +185 195 223 185 195 223 185 195 223 185 195 223 185 195 223 185 195 223 +185 195 223 185 195 223 189 198 224 160 171 208 84 105 171 69 93 168 +31 38 62 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 27 32 46 72 90 145 72 96 171 126 145 198 +184 193 220 180 190 220 180 190 220 180 190 220 180 190 220 180 190 220 +180 190 220 180 190 220 180 190 220 180 190 220 180 190 220 180 190 220 +180 190 220 180 190 220 180 190 220 180 190 220 180 190 220 184 193 222 +185 195 222 185 195 223 189 198 224 191 199 224 192 201 226 192 201 226 +192 201 226 194 201 224 192 201 226 191 199 224 189 198 224 189 197 224 +185 195 222 184 193 222 184 193 220 180 190 220 180 190 220 184 193 220 +185 195 222 189 197 224 189 198 224 189 197 224 185 195 223 184 193 222 +180 190 220 180 190 220 180 190 220 180 190 220 180 190 220 180 190 220 +180 190 220 180 190 220 180 190 220 185 195 223 137 153 200 74 98 173 +72 90 145 27 32 46 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 12 16 26 68 84 132 71 96 169 96 117 181 169 180 211 +176 187 218 176 187 218 176 187 218 176 187 218 176 187 218 176 187 218 +176 187 218 176 187 218 176 187 218 176 187 218 176 187 218 176 187 218 +176 187 218 176 187 218 180 190 220 180 190 220 185 195 223 189 198 224 +197 204 227 201 208 230 205 212 231 209 215 232 213 218 233 214 219 236 +218 222 237 214 219 236 213 218 233 209 215 232 205 212 231 201 208 230 +197 204 227 192 201 226 189 197 224 185 195 223 184 193 222 189 197 224 +192 201 226 201 208 230 205 212 231 205 211 230 197 204 227 185 195 223 +180 190 220 176 187 218 176 187 218 176 187 218 176 187 218 176 187 218 +176 187 218 176 187 218 176 187 218 180 190 220 176 187 218 108 128 187 +69 93 168 68 84 132 12 16 26 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +4 5 10 53 65 105 71 96 169 75 99 174 147 161 203 176 187 218 +175 184 213 175 184 213 175 184 213 175 184 213 175 184 213 175 184 213 +175 184 213 175 184 213 175 184 213 175 184 213 175 184 213 175 184 213 +176 187 218 180 190 220 185 195 222 194 201 224 205 211 230 218 222 237 +229 232 239 229 232 239 228 230 236 228 230 236 229 232 239 228 230 236 +225 227 235 228 230 236 229 232 239 228 230 236 228 230 236 232 235 242 +232 235 242 221 226 239 209 215 234 201 208 228 198 205 228 205 211 230 +218 222 237 232 235 242 228 230 236 229 232 239 221 226 239 199 206 227 +184 193 222 176 187 218 176 187 218 175 184 213 176 187 218 176 187 218 +176 187 218 176 187 218 176 187 218 176 187 218 176 187 218 160 171 208 +79 102 174 71 96 169 53 65 105 2 3 6 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +31 38 62 72 95 165 72 96 171 117 135 190 169 180 211 166 177 212 +166 177 212 166 177 212 166 177 212 166 177 212 166 177 212 168 179 211 +168 179 211 168 179 211 168 179 211 166 177 212 168 179 211 175 184 213 +180 190 220 191 199 224 205 212 231 229 232 239 232 235 242 209 213 223 +185 191 210 156 164 188 156 164 188 129 135 150 128 134 148 122 122 122 +122 122 122 122 122 122 128 134 148 129 135 150 129 135 150 156 164 188 +183 190 208 204 208 221 225 227 235 232 235 242 232 235 242 232 235 242 +219 222 229 168 177 206 129 135 150 156 164 188 219 222 229 221 226 239 +189 198 224 176 187 218 169 180 211 168 179 211 169 180 211 169 180 211 +169 180 211 169 180 211 169 180 211 169 180 211 169 180 211 175 184 213 +127 144 195 72 96 171 72 95 165 31 38 62 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 8 13 +53 65 105 72 96 170 87 109 178 152 165 205 166 177 212 166 177 212 +166 177 212 166 177 212 166 177 212 166 177 212 166 177 212 166 177 212 +166 177 212 164 175 209 166 177 212 166 177 212 169 180 211 180 190 220 +194 201 224 218 222 237 232 235 242 194 200 218 156 164 188 128 134 148 +122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 +122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 +122 122 122 122 122 122 129 135 150 156 164 188 183 190 208 156 164 188 +128 134 148 122 122 122 122 122 122 122 122 122 156 164 188 229 232 239 +197 204 227 176 187 218 166 177 212 166 177 212 166 177 212 166 177 212 +166 177 212 166 177 212 166 177 212 166 177 212 166 177 212 166 177 212 +160 171 208 90 112 180 71 96 171 53 65 105 8 10 17 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 31 38 62 +72 95 165 71 96 171 108 128 187 160 171 208 160 171 208 160 171 208 +160 171 208 160 171 208 160 171 208 160 171 208 160 171 208 160 171 208 +160 171 208 160 171 208 160 171 208 166 177 212 176 187 218 197 204 224 +232 235 242 209 213 223 129 135 150 122 122 122 122 122 122 122 122 122 +122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 +122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 +122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 +122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 228 230 236 +201 208 230 176 187 218 164 175 209 160 171 208 160 171 208 160 171 208 +164 175 209 164 175 209 164 175 209 164 175 209 164 175 209 164 175 209 +166 177 212 117 135 190 71 96 171 72 95 165 31 38 62 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 7 8 13 68 84 132 +73 97 171 74 98 172 132 148 198 160 171 208 159 170 206 159 170 206 +159 170 206 159 170 206 159 170 206 159 170 206 159 170 206 159 170 206 +153 166 206 153 166 206 160 171 208 169 180 211 190 198 223 229 232 239 +204 208 221 122 122 122 113 116 128 122 122 122 122 122 122 122 122 122 +122 122 122 113 116 128 113 116 128 113 116 128 113 116 128 122 122 122 +122 122 122 113 116 128 113 116 128 113 116 128 113 116 128 113 116 128 +122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 +122 122 122 122 122 122 122 122 122 122 122 122 122 122 122 225 227 235 +205 211 230 175 184 213 160 171 208 159 170 206 160 171 208 160 171 208 +160 171 208 160 171 208 160 171 208 160 171 208 160 171 208 160 171 208 +160 171 208 137 153 200 79 102 174 72 96 170 68 84 132 8 10 17 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 31 38 62 72 95 165 +73 97 172 87 109 178 152 165 205 153 166 206 153 166 206 153 166 206 +153 166 206 153 166 206 153 166 206 153 166 206 153 166 206 153 166 206 +152 165 205 153 166 206 160 171 208 180 190 220 221 226 239 204 208 221 +122 122 122 113 116 128 113 116 128 113 116 128 113 116 128 113 116 128 +113 116 128 129 135 150 168 177 206 194 200 218 219 222 229 228 230 236 +225 227 235 219 222 229 209 213 223 183 190 208 129 135 150 122 122 122 +113 116 128 113 116 128 113 116 128 113 116 128 113 116 128 113 116 128 +113 116 128 113 116 128 113 116 128 113 116 128 113 116 128 219 222 229 +205 211 230 169 180 211 153 166 206 153 166 206 153 166 206 153 166 206 +153 166 206 153 166 206 153 166 206 153 166 206 153 166 206 153 166 206 +153 166 206 153 166 206 91 113 180 72 96 171 72 95 165 43 50 70 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 11 13 21 53 65 105 74 98 173 +72 96 170 111 130 189 149 162 202 147 161 203 147 161 203 147 161 203 +147 161 203 147 161 203 147 161 203 147 161 203 147 161 203 147 161 203 +147 161 203 152 165 205 166 177 212 199 206 227 228 230 236 122 122 122 +78 87 115 113 116 128 113 116 128 78 87 115 78 87 115 129 135 150 +194 200 218 232 235 242 221 226 239 213 217 231 205 211 230 197 204 227 +197 204 227 201 208 228 209 215 232 218 222 235 232 235 242 225 227 235 +183 190 208 122 122 122 78 87 115 113 116 128 113 116 128 113 116 128 +113 116 128 113 116 128 113 116 128 113 116 128 113 116 128 219 222 229 +201 208 230 166 177 212 152 165 205 147 161 203 147 161 203 152 165 205 +152 165 205 152 165 205 152 165 205 152 165 205 152 165 205 147 161 203 +152 165 205 152 165 205 117 135 190 72 96 170 74 98 173 68 84 132 +12 16 26 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 31 38 62 72 95 165 74 98 173 +72 96 170 127 144 195 144 158 201 144 158 201 144 158 201 144 158 201 +144 158 201 144 158 201 144 158 201 144 158 201 144 158 201 144 158 201 +144 158 201 153 166 206 175 184 213 221 226 239 156 164 188 78 87 115 +78 87 115 78 87 115 78 87 115 78 87 115 129 135 150 229 232 239 +218 222 235 190 198 223 176 187 218 169 180 211 166 177 212 166 177 212 +164 175 209 166 177 212 166 177 212 175 184 213 180 190 220 197 204 227 +221 226 239 219 222 229 156 164 188 78 87 115 78 87 115 78 87 115 +78 87 115 78 87 115 78 87 115 78 87 115 78 87 115 219 222 229 +201 208 228 166 177 212 147 161 203 144 158 201 147 161 203 147 161 203 +147 161 203 147 161 203 147 161 203 147 161 203 147 161 203 147 161 203 +147 161 203 147 161 203 132 148 198 73 97 171 73 98 172 72 95 165 +31 38 62 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 2 3 6 53 65 105 73 96 167 73 97 172 +73 97 171 127 144 195 141 156 201 137 153 200 137 153 200 137 153 200 +137 153 200 137 153 200 137 153 200 137 153 200 141 156 201 137 153 200 +141 156 201 153 166 206 185 195 222 228 230 236 122 122 122 69 78 104 +78 87 115 78 87 115 69 78 104 122 122 122 228 230 236 205 211 230 +175 184 213 160 171 208 152 165 205 147 161 203 144 158 201 144 158 201 +141 156 201 144 158 201 147 161 203 147 161 203 153 166 206 164 175 209 +175 184 213 198 205 228 232 235 242 183 190 208 113 116 128 78 87 115 +78 87 115 78 87 115 78 87 115 78 87 115 78 87 115 219 222 229 +197 204 227 160 171 208 144 158 201 141 156 201 141 156 201 141 156 201 +141 156 201 141 156 201 141 156 201 141 156 201 141 156 201 141 156 201 +141 156 201 141 156 201 136 152 200 74 98 172 73 97 172 73 97 170 +53 65 105 4 5 10 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 12 16 26 68 84 132 74 98 173 72 96 171 +79 102 174 127 144 195 136 152 200 136 152 200 136 152 200 136 152 200 +136 152 200 136 152 200 136 152 200 136 152 200 136 152 200 136 152 200 +137 153 200 153 166 206 197 204 227 204 208 221 78 87 115 69 78 104 +69 78 104 69 78 104 69 78 104 183 190 208 221 225 235 176 187 218 +152 165 205 141 156 201 136 152 200 136 152 200 136 152 200 136 152 200 +136 152 200 136 152 200 136 152 200 136 152 200 137 153 200 141 156 201 +152 165 205 166 177 212 184 193 220 225 227 235 185 191 210 78 87 115 +69 78 104 69 78 104 69 78 104 69 78 104 69 78 104 219 222 229 +194 201 224 160 171 208 141 156 201 136 152 200 137 153 200 137 153 200 +137 153 200 137 153 200 137 153 200 137 153 200 137 153 200 137 153 200 +137 153 200 137 153 200 132 148 198 79 102 174 72 96 171 74 98 173 +72 89 141 19 21 29 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 31 38 62 72 95 165 74 98 173 72 96 170 +87 109 178 127 144 195 132 148 198 132 148 198 132 148 198 132 148 198 +132 148 198 132 148 198 132 148 198 132 148 198 132 148 198 132 148 198 +136 152 200 153 166 206 201 208 230 183 190 208 69 78 104 69 78 104 +69 78 104 69 78 104 69 78 104 209 213 223 199 206 227 160 171 208 +137 153 200 132 148 198 132 148 198 132 148 198 132 148 198 132 148 198 +132 148 198 132 148 198 132 148 198 132 148 198 132 148 198 132 148 198 +132 148 198 141 156 201 153 166 206 176 187 218 221 225 235 183 190 208 +69 78 104 56 62 79 69 78 104 69 78 104 69 78 104 219 222 229 +185 195 222 152 165 205 136 152 200 132 148 198 132 148 198 132 148 198 +132 148 198 132 148 198 132 148 198 132 148 198 132 148 198 132 148 198 +132 148 198 132 148 198 132 148 198 87 109 178 72 96 170 74 98 173 +72 95 165 31 38 62 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 1 53 65 105 74 98 172 73 97 171 71 96 171 +90 112 180 124 141 194 127 144 195 127 144 195 127 144 195 127 144 195 +127 144 195 127 144 195 127 144 195 127 144 195 127 144 195 127 144 195 +132 148 198 153 166 206 205 212 231 183 190 208 56 60 74 56 62 79 +56 62 79 56 60 74 78 87 115 209 213 223 191 199 224 153 166 206 +132 148 198 127 144 195 127 144 195 127 144 195 127 144 195 127 144 195 +127 144 195 126 145 198 126 145 198 126 145 198 126 145 198 126 145 198 +127 144 195 132 148 198 136 152 200 152 165 205 176 187 218 225 227 235 +183 190 208 69 78 104 56 60 74 56 59 67 122 122 122 220 224 234 +175 184 213 144 158 201 126 145 198 127 144 195 126 145 198 126 145 198 +126 145 198 126 145 198 126 145 198 126 145 198 126 145 198 126 145 198 +126 145 198 126 145 198 127 144 195 91 113 180 71 96 171 73 97 172 +72 96 170 53 65 105 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 8 10 17 53 65 105 75 99 174 74 98 172 71 96 171 +90 112 180 120 138 192 124 141 194 124 141 194 124 141 194 124 141 194 +124 141 194 124 141 194 124 141 194 124 141 194 120 138 192 120 138 192 +126 145 198 147 161 203 198 205 228 183 190 208 56 60 74 56 59 67 +56 60 74 56 59 67 69 78 104 204 208 221 199 206 227 160 171 208 +137 153 200 126 145 198 127 144 195 127 144 195 124 141 194 124 141 194 +124 141 194 124 141 194 124 141 194 124 141 194 124 141 194 124 141 194 +124 141 194 124 141 194 124 141 194 132 148 198 149 162 202 175 184 213 +220 224 234 183 190 208 122 122 122 122 122 122 204 208 221 205 211 230 +159 170 206 132 148 198 124 141 194 124 141 194 124 141 194 124 141 194 +124 141 194 124 141 194 124 141 194 124 141 194 124 141 194 124 141 194 +124 141 194 124 141 194 124 141 194 96 117 181 71 96 171 74 98 171 +74 98 173 53 65 105 8 10 17 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 23 26 35 68 84 132 74 98 173 74 98 172 72 96 171 +87 109 178 117 135 190 120 138 192 120 138 192 120 138 192 120 138 192 +120 138 192 120 138 192 120 138 192 120 138 192 117 135 190 117 135 190 +124 141 194 141 156 201 189 198 224 183 190 208 56 62 79 56 59 67 +56 59 67 56 59 67 56 59 67 129 135 150 232 235 242 184 193 220 +160 171 208 147 161 203 141 156 201 136 152 200 132 148 198 132 148 198 +132 148 198 127 144 195 127 144 195 127 144 195 127 144 195 124 141 194 +124 141 194 124 141 194 124 141 194 124 141 194 132 148 198 144 158 201 +168 179 211 205 211 230 221 225 235 220 224 234 199 206 227 164 175 209 +136 152 200 124 141 194 120 138 192 120 138 192 120 138 192 120 138 192 +120 138 192 120 138 192 120 138 192 120 138 192 120 138 192 120 138 192 +120 138 192 120 138 192 120 138 192 87 109 178 72 96 171 74 98 172 +74 98 173 72 89 141 23 26 35 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 27 32 46 72 95 165 73 97 172 74 98 172 73 97 171 +79 102 174 111 130 189 117 135 190 117 135 190 117 135 190 117 135 190 +117 135 190 117 135 190 117 135 190 117 135 190 117 135 190 115 133 187 +117 135 190 132 148 198 176 187 218 219 222 229 69 78 104 56 59 67 +56 59 67 56 59 67 56 59 67 56 59 67 156 164 188 232 235 242 +209 215 232 185 195 222 176 187 218 168 179 211 164 175 209 159 170 206 +153 166 206 153 166 206 152 165 205 149 162 202 144 158 201 141 156 201 +141 156 201 136 152 200 132 148 198 132 148 198 132 148 198 132 148 198 +141 156 201 153 166 206 160 171 208 160 171 208 147 161 203 132 148 198 +120 138 192 117 135 190 117 135 190 117 135 190 117 135 190 117 135 190 +117 135 190 117 135 190 117 135 190 117 135 190 117 135 190 117 135 190 +117 135 190 117 135 190 117 135 190 79 102 174 73 97 171 74 98 172 +73 98 172 72 95 165 31 38 62 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 1 31 38 62 73 96 167 74 98 173 74 98 172 72 96 170 +74 98 173 108 128 187 111 130 189 111 130 189 111 130 189 111 130 189 +111 130 189 111 130 189 111 130 189 111 130 189 111 130 189 111 130 189 +111 130 189 124 141 194 153 166 206 221 225 235 122 122 122 38 41 51 +56 59 67 56 59 67 56 59 67 38 41 51 56 59 67 113 116 128 +156 164 188 209 213 223 209 213 223 209 213 223 213 217 231 213 217 231 +213 217 231 209 215 232 209 215 232 209 215 232 201 208 230 192 201 226 +185 195 222 180 190 220 175 184 213 164 175 209 153 166 206 147 161 203 +144 158 201 141 156 201 136 152 200 132 148 198 124 141 194 117 135 190 +111 130 189 111 130 189 111 130 189 111 130 189 111 130 189 111 130 189 +111 130 189 111 130 189 111 130 189 111 130 189 111 130 189 111 130 189 +111 130 189 111 130 189 111 130 189 75 99 174 73 97 171 74 98 172 +74 98 172 72 96 170 31 38 62 0 0 0 0 0 0 0 0 0 +0 0 0 +2 3 6 46 54 81 71 96 169 74 98 173 74 98 172 73 97 171 +72 96 171 96 117 181 108 128 187 108 128 187 108 128 187 108 128 187 +108 128 187 108 128 187 108 128 187 108 128 187 108 128 187 108 128 187 +108 128 187 111 130 189 136 152 200 184 193 220 204 208 221 56 59 67 +38 41 51 38 41 51 38 41 51 38 41 51 38 41 51 38 41 51 +38 41 51 38 41 51 56 59 67 78 87 115 122 122 122 128 134 148 +128 134 148 129 135 150 129 135 150 156 164 188 156 164 188 156 164 188 +183 190 208 194 200 218 209 213 223 220 224 234 221 226 239 209 215 232 +189 196 219 164 175 209 147 161 203 132 148 198 120 138 192 111 130 189 +108 128 187 108 128 187 108 128 187 108 128 187 108 128 187 108 128 187 +108 128 187 108 128 187 108 128 187 108 128 187 108 128 187 108 128 187 +108 128 187 108 128 187 108 128 187 73 97 171 73 97 171 74 98 172 +74 98 171 74 98 172 46 54 81 2 3 6 0 0 0 0 0 0 +0 0 0 +5 7 12 53 65 105 72 96 170 74 98 172 74 98 172 74 98 172 +73 97 170 91 113 180 108 128 187 108 128 187 108 128 187 108 128 187 +108 128 187 108 128 187 108 128 187 108 128 187 108 128 187 108 128 187 +108 128 187 108 128 187 120 138 192 152 165 205 213 218 233 156 164 188 +34 36 42 34 36 42 38 41 51 34 36 42 34 36 42 34 36 42 +34 36 42 34 36 42 34 36 42 34 36 42 34 36 42 29 31 36 +29 31 36 29 31 36 29 31 36 29 31 36 29 31 36 38 41 51 +56 59 67 56 59 67 69 78 104 78 87 115 113 116 128 129 135 150 +204 208 221 225 227 235 199 206 227 166 177 212 141 156 201 120 138 192 +111 130 189 108 128 187 108 128 187 108 128 187 108 128 187 108 128 187 +108 128 187 108 128 187 108 128 187 108 128 187 108 128 187 108 128 187 +108 128 187 108 128 187 96 117 181 73 97 171 73 97 171 74 98 172 +74 98 172 74 98 172 53 65 105 5 7 12 0 0 0 0 0 0 +0 0 0 +7 8 13 53 65 105 73 97 170 74 98 171 74 98 172 74 98 172 +73 97 171 79 102 174 96 117 181 96 117 181 96 117 181 96 117 181 +96 117 181 96 117 181 96 117 181 96 117 181 96 117 181 96 117 181 +96 117 181 96 117 181 108 128 187 127 144 195 160 171 208 218 222 235 +156 164 188 38 41 51 27 29 36 34 36 42 34 36 42 34 36 42 +34 36 42 34 36 42 34 36 42 34 36 42 34 36 42 34 36 42 +34 36 42 34 36 42 34 36 42 34 36 42 34 36 42 34 36 42 +29 31 36 29 31 36 29 31 36 29 31 36 27 29 36 29 31 36 +34 36 42 69 78 104 156 164 188 210 214 227 190 198 223 147 161 203 +120 138 192 108 128 187 96 117 181 96 117 181 96 117 181 96 117 181 +96 117 181 96 117 181 96 117 181 96 117 181 96 117 181 96 117 181 +96 117 181 96 117 181 87 109 178 72 96 170 72 96 170 74 98 172 +74 98 172 74 98 173 53 65 105 7 8 13 0 0 0 0 0 0 +0 0 0 +7 8 13 53 65 105 73 97 171 74 98 172 74 98 172 74 98 172 +72 96 170 74 98 172 91 113 180 96 117 181 96 117 181 96 117 181 +96 117 181 96 117 181 96 117 181 96 117 181 96 117 181 96 117 181 +96 117 181 96 117 181 96 117 181 108 128 187 127 144 195 160 171 208 +218 222 237 183 190 208 69 78 104 21 23 31 19 21 29 21 23 31 +27 29 36 29 31 36 29 31 36 29 31 36 29 31 36 29 31 36 +29 31 36 29 31 36 27 29 36 29 31 36 29 31 36 29 31 36 +29 31 36 29 31 36 29 31 36 29 31 36 29 31 36 29 31 36 +27 29 36 21 23 31 19 21 29 78 87 115 204 208 221 199 206 227 +144 158 201 117 135 190 96 117 181 96 117 181 96 117 181 96 117 181 +96 117 181 96 117 181 96 117 181 96 117 181 96 117 181 96 117 181 +96 117 181 96 117 181 75 99 174 72 96 170 73 97 171 74 98 172 +74 98 172 74 98 172 53 65 105 8 10 17 0 0 0 0 0 0 +0 0 0 +8 10 17 53 65 105 74 98 172 74 98 172 74 98 172 74 98 172 +73 97 171 73 97 171 79 102 174 91 113 180 91 113 180 91 113 180 +91 113 180 91 113 180 91 113 180 91 113 180 91 113 180 91 113 180 +91 113 180 90 112 180 90 112 180 91 113 180 96 117 181 120 138 192 +147 161 203 194 201 224 219 222 229 156 164 188 69 78 104 38 41 51 +19 21 29 8 10 17 11 13 21 17 19 24 17 19 24 17 19 24 +17 19 24 17 19 24 17 19 24 17 19 24 17 19 24 21 23 31 +21 23 31 21 23 31 21 23 31 21 23 31 21 23 31 21 23 31 +21 23 31 21 23 31 19 21 29 17 19 24 56 59 67 194 200 218 +189 197 224 132 148 198 108 128 187 91 113 180 91 113 180 91 113 180 +91 113 180 91 113 180 91 113 180 91 113 180 91 113 180 91 113 180 +91 113 180 87 109 178 73 97 171 73 97 171 74 98 172 74 98 172 +74 98 172 74 98 173 53 65 105 8 10 17 0 0 0 0 0 0 +0 0 0 +8 10 17 68 84 132 74 98 173 74 98 172 74 98 172 74 98 172 +74 98 172 72 96 170 77 101 175 87 109 178 87 109 178 87 109 178 +87 109 178 87 109 178 87 109 178 87 109 178 87 109 178 87 109 178 +87 109 178 87 109 178 87 109 178 87 109 178 87 109 178 96 117 181 +108 128 187 131 146 194 159 170 206 194 201 224 225 227 235 194 200 218 +129 135 150 122 122 122 78 87 115 56 59 67 38 41 51 34 36 42 +27 29 36 17 19 24 17 19 24 17 19 24 11 13 21 5 7 12 +4 5 10 7 8 13 7 8 13 11 13 21 17 19 24 17 19 24 +17 19 24 17 19 24 17 19 24 17 19 24 7 8 13 56 60 74 +219 222 229 160 171 208 117 135 190 91 113 180 87 109 178 87 109 178 +87 109 178 87 109 178 87 109 178 87 109 178 87 109 178 87 109 178 +87 109 178 79 102 174 72 96 170 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 173 53 65 105 8 10 17 0 0 0 0 0 0 +0 0 0 +7 8 13 53 65 105 74 98 173 74 98 172 74 98 172 74 98 172 +74 98 172 73 97 171 74 98 172 79 102 174 84 105 171 84 105 171 +84 105 171 84 105 171 84 105 171 84 105 171 84 105 171 84 105 171 +84 105 171 79 102 174 84 105 171 87 109 178 87 109 178 91 113 180 +96 117 181 96 117 181 111 130 189 124 141 194 144 158 201 168 179 211 +192 201 226 209 215 232 209 213 223 194 200 218 183 190 208 183 190 208 +183 190 208 183 190 208 183 190 208 183 190 208 183 190 208 183 190 208 +156 164 188 156 164 188 122 122 122 56 59 67 17 19 24 7 8 13 +8 10 17 11 13 21 11 13 21 11 13 21 8 10 17 5 7 12 +129 135 150 201 208 230 127 144 195 96 117 181 87 109 178 84 105 171 +87 109 178 87 109 178 87 109 178 87 109 178 87 109 178 87 109 178 +79 102 174 74 98 172 73 97 171 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 53 65 105 8 10 17 0 0 0 0 0 0 +0 0 0 +5 7 12 53 65 105 73 97 171 74 98 172 74 98 172 74 98 172 +74 98 172 73 97 171 72 96 170 74 98 172 79 102 174 79 102 174 +79 102 174 79 102 174 79 102 174 79 102 174 79 102 174 79 102 174 +79 102 174 79 102 174 87 109 178 96 117 181 111 130 189 117 135 190 +117 135 190 108 128 187 96 117 181 96 117 181 96 117 181 108 128 187 +117 135 190 127 144 195 137 153 200 152 165 205 160 171 208 160 171 208 +166 177 212 168 179 211 169 180 211 169 180 211 175 184 213 176 187 218 +184 193 220 189 196 219 202 207 223 219 222 229 204 208 221 113 116 128 +2 3 6 4 5 10 5 7 12 5 7 12 7 8 13 0 0 0 +56 59 67 204 208 221 147 161 203 96 117 181 84 105 171 79 102 174 +79 102 174 79 102 174 79 102 174 79 102 174 79 102 174 79 102 174 +74 98 172 72 96 170 73 97 171 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 173 53 65 105 7 8 13 0 0 0 0 0 0 +0 0 0 +4 5 10 53 65 105 72 96 170 74 98 171 74 98 172 74 98 172 +74 98 172 74 98 172 73 97 171 73 97 171 74 98 171 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 73 97 171 +74 98 172 79 102 174 108 128 187 132 148 198 175 184 213 194 201 224 +189 197 224 153 166 206 117 135 190 96 117 181 79 102 174 79 102 174 +87 108 173 87 109 178 91 113 180 96 117 181 96 117 181 108 128 187 +108 128 187 108 128 187 108 128 187 108 128 187 108 128 187 111 130 189 +111 130 189 120 137 191 127 144 195 144 158 201 178 186 211 220 224 234 +122 122 122 0 0 0 1 2 3 1 2 3 1 2 3 0 0 0 +7 8 13 183 190 208 166 177 212 108 128 187 79 102 174 74 98 172 +75 99 174 75 99 174 75 99 174 75 99 174 75 99 174 74 98 172 +73 97 171 73 97 171 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 53 65 105 5 7 12 0 0 0 0 0 0 +0 0 0 +2 3 6 46 54 81 73 96 167 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 73 97 172 73 97 171 +73 97 171 73 97 171 73 97 171 73 97 171 72 96 171 72 96 170 +75 99 174 91 113 180 132 148 198 198 204 221 183 190 208 122 122 122 +129 135 150 210 214 227 164 175 209 111 130 189 87 109 178 74 98 172 +73 97 171 74 98 171 74 98 172 75 99 174 79 102 174 79 102 174 +79 102 174 79 102 174 79 102 174 79 102 174 79 102 174 79 102 174 +79 102 174 87 109 178 87 109 178 96 117 181 124 141 194 168 179 211 +209 213 223 38 41 51 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 156 164 188 176 187 218 108 128 187 79 102 174 73 97 171 +73 97 172 73 97 172 73 97 172 73 97 172 73 97 172 73 97 171 +73 97 171 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 171 73 97 171 46 54 81 2 3 6 0 0 0 0 0 0 +0 0 0 +1 2 3 31 38 62 72 95 165 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 73 97 170 72 96 171 +79 102 174 108 128 187 175 184 213 183 190 208 17 19 24 0 0 0 +0 0 0 69 78 104 220 224 234 144 157 197 96 117 181 79 102 174 +73 97 171 72 96 170 73 97 171 73 97 171 74 98 171 74 98 171 +74 98 171 74 98 171 74 98 171 74 98 171 74 98 171 74 98 171 +73 97 172 73 97 171 74 98 171 79 102 174 96 117 181 136 152 200 +206 211 226 113 116 128 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 156 164 188 185 195 222 111 130 189 79 102 174 74 98 171 +72 96 171 73 97 171 73 97 171 73 97 171 73 97 171 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 73 97 170 31 38 62 0 0 1 0 0 0 0 0 0 +0 0 0 +0 0 0 27 32 46 72 95 165 74 98 173 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 73 97 171 73 97 171 +84 105 171 115 133 187 197 204 227 128 134 148 0 0 0 0 0 0 +0 0 0 2 3 6 156 164 188 189 198 224 120 137 191 90 112 180 +75 99 174 73 97 170 73 97 171 73 97 171 73 97 172 73 97 172 +73 97 172 73 97 172 73 97 172 73 97 172 73 97 172 73 97 172 +74 98 171 73 97 172 73 97 170 74 98 172 87 109 178 124 141 194 +201 208 228 128 134 148 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 129 135 150 190 198 223 115 133 187 79 102 174 74 98 171 +73 97 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 173 73 96 167 27 32 46 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 19 21 29 72 90 145 74 99 174 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 73 97 171 74 98 171 +87 109 178 120 137 191 199 206 227 122 122 122 0 0 0 0 0 0 +0 0 0 0 0 0 56 59 67 219 222 229 159 170 206 111 130 189 +87 109 178 77 101 175 73 98 172 73 97 170 73 97 171 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 73 97 171 73 97 171 74 98 172 91 113 180 131 146 194 +205 211 230 122 122 122 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 156 164 188 180 190 220 111 130 189 79 102 174 74 98 171 +72 96 171 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 173 72 90 145 23 26 35 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 11 13 21 68 84 132 75 99 174 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 73 97 171 74 98 171 +87 109 178 120 138 192 201 208 228 122 122 122 0 0 0 0 0 0 +0 0 0 0 0 0 1 2 3 128 134 148 216 220 231 149 162 202 +115 133 187 91 113 180 79 102 174 74 98 172 73 97 171 73 97 171 +73 97 171 73 97 171 73 97 171 73 97 171 73 97 171 73 97 171 +73 97 171 73 97 171 74 98 172 79 102 174 108 128 187 149 162 202 +209 213 223 56 59 67 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 1 183 190 208 169 180 211 108 128 187 79 102 174 73 97 171 +73 97 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +75 99 174 53 65 105 11 13 21 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 2 3 6 46 54 81 75 99 174 74 98 171 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 73 97 171 74 98 171 +87 109 178 120 138 192 201 208 228 122 122 122 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 5 7 12 129 135 150 218 222 235 +164 175 209 125 141 190 108 128 187 91 113 180 84 105 171 79 102 174 +75 99 174 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +75 99 174 79 102 174 87 109 178 108 128 187 135 149 193 198 205 228 +183 190 208 7 8 13 0 0 0 0 0 0 0 0 0 0 0 0 +38 41 51 194 200 218 152 165 205 96 117 181 77 101 175 72 96 171 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 73 97 171 +75 99 174 46 54 81 2 3 6 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 31 38 62 72 95 165 73 97 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 73 97 171 74 98 171 +87 109 178 120 138 192 201 208 228 122 122 122 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 2 3 6 122 122 122 +204 208 221 201 208 228 157 168 202 131 146 194 117 135 190 108 128 187 +96 117 181 91 113 180 87 109 178 87 109 178 87 109 178 91 113 180 +96 117 181 108 128 187 120 138 192 144 158 201 199 206 227 194 200 218 +34 36 42 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +113 116 128 205 212 231 127 144 195 90 112 180 74 98 172 73 97 171 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 73 98 172 +72 95 165 31 38 62 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 23 26 35 68 84 132 74 98 173 74 98 171 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 73 97 172 73 97 171 72 96 170 73 97 170 +87 109 178 120 138 192 201 208 228 122 122 122 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +38 41 51 129 135 150 219 222 229 205 209 224 184 193 220 160 171 208 +144 158 201 136 152 200 127 144 195 125 141 190 129 144 192 136 152 200 +147 161 203 160 171 208 190 198 223 219 222 229 183 190 208 38 41 51 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17 19 24 +185 191 210 175 184 213 108 128 187 79 102 174 73 97 171 73 97 170 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 171 74 99 174 +68 84 132 23 26 35 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 4 5 10 53 65 105 75 99 174 73 97 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 73 97 171 73 97 171 72 97 171 72 96 170 73 97 170 +87 108 173 120 138 192 201 208 228 122 122 122 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 29 31 36 113 116 128 156 164 188 183 190 208 +194 200 218 204 208 221 206 211 226 209 215 232 209 215 232 204 208 221 +194 200 218 183 190 208 156 164 188 56 59 67 1 2 3 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 128 134 148 +205 212 231 131 146 194 91 113 180 77 100 169 73 97 171 72 96 171 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 73 97 172 74 98 173 +53 65 105 4 5 10 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 31 38 62 72 95 165 74 98 173 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +73 97 171 73 97 171 84 105 171 96 117 181 108 128 187 96 117 181 +91 113 180 120 138 192 201 208 228 122 122 122 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 21 23 31 +56 59 67 56 62 79 78 87 115 113 116 128 78 87 115 56 62 79 +56 59 67 27 29 36 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 113 116 128 220 224 234 +149 162 202 108 128 187 79 102 174 73 97 171 73 97 170 73 97 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 173 72 95 165 +31 38 62 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 11 13 21 68 84 132 75 99 174 +74 98 171 74 98 172 74 98 172 74 98 172 74 98 172 73 97 171 +73 97 170 77 101 175 127 144 195 164 173 204 156 164 188 168 177 206 +124 141 194 120 137 191 199 206 227 122 122 122 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 11 13 21 122 122 122 216 220 231 159 170 206 +111 130 189 87 109 178 74 98 172 73 97 171 73 97 171 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 75 99 174 68 84 132 +12 16 26 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 2 3 6 43 50 70 73 97 171 +73 97 172 74 98 172 74 98 172 74 98 172 74 98 172 72 96 170 +71 96 171 79 102 174 147 159 196 69 78 104 0 0 0 122 122 122 +144 158 201 117 135 190 191 199 224 129 135 150 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 2 3 6 19 21 29 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 56 62 79 183 190 208 213 218 233 152 165 205 111 130 189 +87 109 178 75 99 174 73 97 171 72 96 170 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 73 97 171 73 97 171 31 38 62 +2 3 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 12 16 26 68 84 132 +75 99 174 73 97 171 74 98 172 74 98 172 74 98 172 73 97 171 +72 96 171 79 102 174 144 157 197 69 78 104 0 0 0 113 116 128 +141 156 201 108 128 187 166 177 212 183 190 208 17 19 24 0 0 0 +0 0 0 0 0 0 56 59 67 156 164 188 185 191 210 183 190 208 +129 135 150 69 78 104 34 36 42 7 8 13 1 2 3 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 4 5 10 17 19 24 78 87 115 +172 181 208 209 213 223 184 193 220 132 148 198 108 128 187 87 109 178 +75 99 174 73 97 171 73 97 172 73 97 171 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 73 97 171 74 99 174 68 84 132 12 16 26 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 31 38 62 +72 95 165 74 98 172 74 98 172 74 98 172 74 98 172 73 97 171 +72 96 171 79 102 174 144 157 197 56 62 79 0 0 0 122 122 122 +136 152 200 96 117 181 131 146 194 205 211 230 156 164 188 56 60 74 +69 78 104 129 135 150 219 222 229 189 196 219 168 179 211 176 187 218 +194 201 221 205 209 224 219 222 229 204 208 221 156 164 188 129 135 150 +122 122 122 113 116 128 69 78 104 56 62 79 56 60 74 69 78 104 +78 87 115 113 116 128 129 135 150 183 190 208 219 222 229 205 209 224 +176 187 218 141 156 201 117 135 190 96 117 181 79 102 174 74 98 172 +73 97 170 73 97 171 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 72 95 165 31 38 62 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 10 17 +53 65 105 75 99 174 73 97 171 74 98 172 74 98 172 73 97 171 +72 97 171 79 102 174 147 159 196 56 60 74 0 0 0 122 122 122 +132 148 198 87 109 178 108 128 187 137 153 200 191 199 224 221 226 239 +218 222 237 191 199 224 152 165 205 124 141 194 111 130 189 111 130 189 +120 137 191 131 146 194 141 156 201 160 171 208 180 190 220 185 195 222 +194 201 224 201 208 228 214 219 236 221 226 239 221 226 239 221 226 239 +213 218 233 201 208 230 190 198 223 169 180 211 144 158 201 127 144 195 +111 130 189 96 117 181 87 109 178 77 101 175 74 98 172 73 97 171 +73 97 171 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 73 97 171 74 99 174 68 84 132 11 13 21 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +27 32 46 72 95 165 74 98 173 74 98 172 74 98 172 73 97 171 +72 96 171 84 105 171 147 159 196 56 59 67 0 0 0 122 122 122 +132 148 198 79 102 174 84 105 171 96 117 181 115 133 187 127 144 195 +127 144 195 115 133 187 96 117 181 90 112 180 79 102 174 79 102 174 +87 109 178 90 112 180 96 117 181 96 117 181 108 128 187 111 130 189 +117 135 190 120 138 192 125 141 190 129 144 192 131 146 194 127 144 195 +125 141 190 120 137 191 115 133 187 108 128 187 96 117 181 90 112 180 +79 102 174 77 101 175 74 98 172 73 97 171 73 97 171 73 97 171 +74 98 172 73 97 171 73 97 171 73 97 171 73 97 171 73 97 171 +73 97 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 173 72 95 165 31 38 62 0 0 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +4 5 10 53 65 105 77 101 175 73 98 172 74 98 171 73 97 171 +72 96 171 79 102 174 147 159 196 56 59 67 0 0 0 122 122 122 +126 145 198 75 99 174 72 96 171 75 99 174 79 102 174 87 109 178 +87 109 178 79 102 174 77 101 175 74 98 172 72 97 171 71 96 171 +72 96 171 73 97 171 74 98 172 75 99 174 79 102 174 79 102 174 +84 105 171 87 109 178 87 109 178 87 109 178 87 109 178 87 109 178 +87 109 178 87 108 173 79 102 174 79 102 174 74 98 172 74 98 172 +72 96 171 72 96 170 72 96 171 72 97 171 72 97 171 72 97 171 +72 97 171 72 97 171 72 97 171 72 97 171 72 97 171 72 97 171 +72 97 171 73 97 171 73 97 171 74 98 172 74 98 172 73 97 171 +73 97 171 75 99 174 53 65 105 7 8 13 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 23 26 35 72 90 145 75 99 174 73 97 171 72 96 170 +72 96 171 87 109 178 147 159 196 56 59 67 0 0 0 122 122 122 +144 158 201 96 117 181 90 112 180 91 113 180 91 113 180 91 113 180 +91 113 180 91 113 180 90 112 180 91 113 180 91 113 180 90 112 180 +90 112 180 90 112 180 91 113 180 91 113 180 90 112 180 91 113 180 +91 113 180 91 113 180 91 113 180 91 113 180 91 113 180 91 113 180 +91 113 180 91 113 180 91 113 180 90 112 180 91 113 180 90 112 180 +90 112 180 90 112 180 90 112 180 90 112 180 90 112 180 90 112 180 +90 112 180 90 112 180 90 112 180 90 112 180 90 112 180 90 112 180 +90 112 180 79 102 174 74 98 171 73 97 171 73 97 172 73 97 171 +75 99 174 72 89 141 23 26 35 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 1 31 38 62 72 90 145 74 98 173 73 97 171 +72 96 171 87 109 178 147 159 196 56 59 67 0 0 0 122 122 122 +180 188 209 156 166 198 156 166 198 156 166 198 156 166 198 156 166 198 +156 166 198 156 166 198 156 166 198 156 166 198 156 166 198 156 166 198 +156 166 198 156 166 198 156 166 198 156 166 198 156 166 198 156 166 198 +156 166 198 156 166 198 156 166 198 156 166 198 156 166 198 156 166 198 +156 166 198 156 166 198 156 166 198 156 166 198 156 166 198 156 166 198 +156 166 198 156 166 198 157 168 202 157 168 202 157 168 202 157 168 202 +157 168 202 157 168 202 157 168 202 157 168 202 157 168 202 157 168 202 +159 169 202 132 148 198 79 102 174 73 97 170 72 97 171 74 99 174 +72 90 145 27 32 46 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 2 3 6 31 38 62 73 96 167 74 98 173 +72 96 170 87 109 178 147 159 196 38 41 51 0 0 0 29 31 36 +56 59 67 56 59 67 56 59 67 56 59 67 56 59 67 56 59 67 +56 59 67 56 59 67 56 59 67 56 59 67 56 59 67 56 59 67 +56 59 67 56 59 67 56 59 67 56 59 67 56 59 67 56 59 67 +56 59 67 56 59 67 56 59 67 56 59 67 56 59 67 56 59 67 +56 59 67 56 59 67 56 59 67 56 59 67 56 59 67 56 59 67 +56 59 67 56 59 67 56 59 67 56 59 67 56 59 67 56 59 67 +56 59 67 56 59 67 56 59 67 56 59 67 56 59 67 56 59 67 +69 78 104 172 181 208 90 112 180 72 96 170 74 98 173 73 97 171 +43 50 70 1 2 3 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 4 5 10 46 54 81 73 97 172 +72 96 171 87 109 178 156 164 188 56 59 67 4 5 10 1 2 3 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +29 31 36 168 177 206 90 112 180 72 96 171 74 98 173 53 65 105 +4 5 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 8 10 17 53 65 105 +74 98 173 79 102 174 142 153 189 142 153 189 128 134 148 128 134 148 +128 134 148 128 134 148 128 134 148 128 134 148 128 134 148 128 134 148 +128 134 148 128 134 148 128 134 148 128 134 148 128 134 148 128 134 148 +128 134 148 128 134 148 128 134 148 128 134 148 128 134 148 128 134 148 +128 134 148 128 134 148 128 134 148 128 134 148 128 134 148 128 134 148 +128 134 148 128 134 148 128 134 148 128 134 148 128 134 148 128 134 148 +128 134 148 128 134 148 128 134 148 128 134 148 128 134 148 128 134 148 +128 134 148 128 134 148 128 134 148 128 134 148 128 134 148 128 134 148 +129 135 150 155 167 201 87 109 178 74 99 174 53 65 105 8 10 17 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12 16 26 +68 84 132 77 101 175 96 117 181 126 144 198 126 145 198 126 144 198 +126 145 198 126 145 198 126 145 198 126 145 198 126 145 198 126 145 198 +126 145 198 126 145 198 126 145 198 126 144 198 126 144 198 126 144 198 +126 144 198 126 144 198 126 144 198 126 144 198 126 144 198 126 144 198 +126 144 198 126 144 198 126 144 198 126 144 198 126 144 198 126 144 198 +126 144 198 126 144 198 126 144 198 126 144 198 126 144 198 126 144 198 +126 144 198 126 144 198 126 144 198 126 144 198 126 144 198 126 144 198 +126 144 198 126 144 198 126 144 198 126 144 198 126 144 198 126 144 198 +124 141 194 96 117 181 77 101 175 68 84 132 12 16 26 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +11 13 21 53 65 105 73 97 171 74 98 173 73 97 171 73 97 172 +73 97 171 73 97 171 73 97 171 73 97 172 73 97 172 73 97 172 +73 97 172 73 97 172 73 97 172 73 97 172 73 97 172 73 97 172 +73 97 172 73 97 172 73 97 172 73 97 172 73 97 172 73 97 172 +73 97 172 73 97 172 73 97 172 73 97 172 73 97 172 73 97 172 +73 97 172 73 97 172 73 97 172 73 97 172 73 97 172 73 97 172 +73 97 172 73 97 172 73 97 172 73 97 172 73 97 172 73 97 172 +73 97 172 73 97 172 73 97 172 73 97 172 73 97 172 73 97 172 +74 98 173 73 98 172 53 65 105 11 13 21 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 5 7 12 46 54 81 73 96 167 74 99 174 73 97 171 +73 97 171 73 97 171 73 97 171 73 97 171 73 97 171 73 97 171 +73 97 171 73 97 171 73 97 171 73 97 171 73 97 171 73 97 171 +73 97 171 73 97 171 73 97 171 73 97 171 73 97 171 73 97 171 +73 97 171 73 97 171 73 97 171 73 97 171 73 97 171 73 97 171 +73 97 171 73 97 171 73 97 171 73 97 171 73 97 171 73 97 171 +73 97 171 73 97 171 73 97 171 73 97 171 73 97 171 73 97 171 +73 97 171 73 97 171 73 97 171 73 97 171 73 97 171 74 98 173 +72 96 170 46 54 81 5 7 12 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 2 3 6 31 38 62 72 90 145 75 99 174 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 73 97 171 75 99 174 72 95 165 +31 38 62 2 3 6 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 23 26 35 68 84 132 +77 101 175 74 98 173 74 98 172 73 97 171 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +73 97 171 74 98 172 74 98 173 77 101 175 72 90 145 27 32 46 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12 16 26 +53 65 105 72 95 165 75 99 174 75 99 174 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 73 97 171 +74 99 174 75 99 174 72 95 165 53 65 105 12 16 26 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 1 19 21 29 53 65 105 72 95 165 77 101 175 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 75 99 174 +72 95 165 53 65 105 19 21 29 0 0 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 1 27 32 46 53 65 105 74 98 173 +75 99 174 75 99 174 74 98 172 74 98 171 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 171 74 98 172 75 99 174 75 99 174 75 99 174 68 84 132 +27 32 46 1 2 3 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 2 3 6 27 32 46 +53 65 105 72 95 165 74 99 174 77 101 175 75 99 174 74 98 172 +74 98 171 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 74 98 172 +74 98 172 74 98 172 74 98 172 74 98 171 74 98 172 75 99 174 +77 101 175 75 99 174 72 95 165 53 65 105 31 38 62 5 7 12 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 12 16 26 46 54 81 53 65 105 72 90 145 77 101 175 +77 101 175 75 99 174 75 99 174 74 98 173 74 98 173 74 98 173 +74 98 173 74 98 173 74 98 173 74 98 173 74 98 173 74 98 173 +74 98 173 75 99 174 75 99 174 77 101 175 77 101 175 72 90 145 +53 65 105 46 54 81 19 21 29 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 2 3 6 12 16 26 27 32 46 +46 54 81 68 84 132 72 90 145 72 95 165 73 96 167 73 97 170 +73 97 170 73 97 171 73 97 171 73 97 170 72 96 170 73 96 167 +72 95 165 72 90 145 53 65 105 46 54 81 31 38 62 12 16 26 +2 3 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 1 2 3 6 7 8 13 19 21 29 27 32 46 +27 32 46 31 38 62 31 38 62 27 32 46 23 26 35 19 21 29 +8 10 17 2 3 6 0 0 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 diff --git a/drivers/video/logo/logo_tits_clut224.ppm b/drivers/video/logo/logo_tits_clut224.ppm new file mode 100644 index 00000000000..7504a3a2c21 --- /dev/null +++ b/drivers/video/logo/logo_tits_clut224.ppm @@ -0,0 +1,1443 @@ +P3 +72 120 +255 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 32 15 7 99 70 33 83 51 28 +83 51 28 99 70 33 65 48 15 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 40 20 7 99 70 33 83 51 28 99 70 33 +9 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 116 86 23 200 156 55 255 234 0 255 232 0 +255 232 0 255 234 0 255 221 0 156 123 43 36 17 7 0 0 0 +4 0 2 123 94 35 255 221 0 255 234 0 255 232 0 255 232 0 +156 123 43 116 86 23 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 156 123 43 255 234 0 255 221 0 123 94 35 73 49 22 +99 70 33 73 49 22 116 86 23 255 221 0 200 156 55 22 13 4 +123 94 35 255 221 0 255 221 0 255 221 0 253 230 2 255 255 40 +255 255 40 253 230 2 116 86 23 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +156 123 43 255 234 0 156 123 43 111 90 31 200 156 55 255 255 42 +255 255 41 255 255 42 248 233 31 111 90 31 116 86 23 65 48 15 +123 94 35 116 86 23 116 86 23 156 123 43 249 230 10 255 255 42 +255 255 42 255 255 40 253 230 2 116 86 23 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 123 94 35 +255 234 0 156 123 43 156 123 43 255 255 42 255 255 41 255 255 40 +255 255 40 255 255 41 255 255 42 255 255 42 156 123 43 65 48 15 +255 221 0 255 234 0 255 234 0 73 49 22 249 230 10 255 255 42 +255 255 40 255 255 42 255 255 40 253 230 2 116 86 23 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 22 13 4 255 221 0 +200 156 55 123 94 35 255 255 42 255 255 41 255 255 41 255 255 40 +255 255 42 248 233 31 200 156 55 200 156 55 248 233 31 116 86 23 +255 234 0 255 221 0 255 222 0 255 221 0 111 90 31 255 255 42 +255 255 41 255 255 40 255 255 42 255 255 40 253 230 2 65 48 15 +4 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 32 15 7 200 156 55 253 230 2 +116 86 23 200 156 55 255 255 41 255 255 41 255 255 41 255 255 41 +200 156 55 116 86 23 116 86 23 116 86 23 111 90 31 116 86 23 +255 232 0 255 222 0 255 222 0 255 221 0 99 70 33 255 255 42 +255 255 40 255 255 41 255 255 40 255 255 42 255 255 40 156 123 43 +58 38 16 156 123 43 22 13 4 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 65 48 15 255 232 0 116 86 23 +200 156 55 255 255 42 255 255 40 255 255 41 255 255 41 248 233 31 +116 86 23 255 221 0 255 234 0 255 234 0 156 123 43 116 86 23 +255 234 0 255 232 0 255 232 0 255 221 0 111 90 31 255 255 40 +255 255 41 255 255 41 255 255 41 255 255 40 255 255 42 255 255 42 +116 86 23 255 234 0 200 156 55 20 10 4 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 4 0 2 255 221 0 116 86 23 200 156 55 +255 255 42 255 255 40 255 255 41 255 255 41 255 255 41 156 123 43 +156 123 43 255 234 0 255 232 0 255 234 0 255 221 0 116 86 23 +255 221 0 156 123 43 156 123 43 255 221 0 200 156 55 156 123 43 +255 255 41 255 255 41 255 255 41 255 255 41 255 255 41 255 255 42 +200 156 55 156 123 43 255 234 0 200 156 55 22 13 4 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 116 86 23 116 86 23 200 156 55 255 255 41 +255 255 40 255 255 41 255 255 41 255 255 40 255 255 41 73 49 22 +255 234 0 156 123 43 116 86 23 116 86 23 116 86 23 58 38 16 +116 86 23 131 100 59 119 92 52 116 86 23 65 48 15 156 123 43 +255 255 42 255 255 41 255 255 41 255 255 41 255 255 41 255 255 41 +248 233 31 123 94 35 248 233 31 249 230 10 200 156 55 22 13 4 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 4 0 2 65 48 15 248 233 31 255 255 42 255 255 40 +255 255 41 255 255 41 255 255 40 255 255 42 123 94 35 20 10 4 +65 48 15 133 97 51 186 149 103 186 149 103 143 108 61 83 51 28 +219 162 97 236 169 118 236 169 118 208 160 108 107 66 48 156 123 43 +255 255 42 255 255 41 255 255 41 255 255 41 255 255 41 255 255 40 +255 255 42 111 90 31 248 233 31 255 255 42 249 230 10 200 156 55 +22 13 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 58 38 16 248 233 31 255 255 42 255 255 40 255 255 41 +255 255 41 255 255 41 255 255 41 248 233 31 58 38 16 98 62 37 +219 162 97 236 169 118 236 169 118 236 169 118 230 163 113 219 162 97 +232 168 117 231 165 115 231 165 115 236 169 118 190 135 80 116 86 23 +248 233 31 255 255 41 255 255 41 255 255 41 255 255 41 255 255 41 +255 255 41 200 156 55 156 123 43 255 255 40 255 255 42 249 230 10 +200 156 55 40 20 7 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +40 20 7 248 233 31 255 255 41 255 255 40 255 255 41 255 255 41 +255 255 41 255 255 41 255 255 41 156 123 43 83 51 28 225 161 106 +232 168 117 231 165 115 219 162 97 219 162 97 232 168 117 232 168 117 +230 164 114 230 164 114 229 163 112 231 165 115 236 169 118 94 65 40 +248 233 31 255 255 41 255 255 41 255 255 41 255 255 41 255 255 41 +255 255 40 255 255 42 86 63 36 255 255 40 255 255 41 255 255 41 +249 230 10 99 70 33 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40 20 7 +248 233 31 255 255 41 255 255 40 255 255 41 255 255 41 255 255 41 +255 255 41 255 255 41 248 233 31 83 51 28 226 164 99 231 165 115 +230 164 114 230 163 113 225 161 106 229 163 112 231 165 115 231 165 115 +231 165 115 225 161 106 200 154 86 232 168 117 236 169 118 131 100 59 +200 156 55 255 255 40 255 255 41 255 255 41 255 255 41 255 255 41 +255 255 41 255 255 40 86 63 36 255 255 41 255 255 40 255 255 41 +255 255 41 248 233 31 18 6 8 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 40 20 7 248 233 31 +255 255 42 255 255 41 255 255 41 255 255 41 255 255 41 255 255 41 +255 255 40 255 255 41 156 123 43 143 108 61 230 172 123 236 217 150 +232 170 121 227 181 122 236 217 150 230 172 123 229 163 112 230 163 113 +230 163 113 230 164 114 231 165 115 230 163 113 231 165 115 225 161 106 +73 49 22 255 255 40 255 255 41 255 255 40 255 255 41 255 255 41 +255 255 41 255 255 41 156 123 43 200 156 55 255 255 41 255 255 40 +255 255 41 255 255 41 123 94 35 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 18 6 8 248 233 31 255 255 42 +255 255 40 255 255 41 255 255 41 255 255 41 255 255 41 255 255 41 +255 255 41 248 233 31 83 51 28 225 161 106 236 217 150 249 228 179 +236 217 150 255 232 190 255 234 192 249 228 179 249 228 179 236 217 150 +233 170 120 232 170 121 232 170 121 232 170 121 230 164 114 232 168 117 +91 67 37 248 233 31 255 255 40 255 255 41 255 255 41 255 255 41 +255 255 41 255 255 42 255 221 0 111 90 31 255 255 42 255 255 41 +255 255 41 255 255 42 200 156 55 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 99 70 33 255 255 41 255 255 40 +255 255 41 255 255 41 255 255 41 255 255 41 255 255 41 255 255 40 +255 255 42 123 94 35 155 112 61 230 172 123 249 228 179 255 231 189 +255 231 189 255 231 189 255 230 188 255 232 190 255 232 190 255 232 190 +255 231 189 255 231 189 255 231 189 255 230 188 230 172 123 232 166 115 +168 130 70 116 86 23 249 230 10 255 255 41 255 255 41 255 255 41 +255 255 41 255 255 42 255 221 0 111 90 31 255 255 42 255 255 41 +255 255 41 255 255 41 248 233 31 58 38 16 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 86 63 36 248 233 31 255 255 41 255 255 41 +255 255 41 255 255 41 255 255 41 255 255 41 255 255 41 255 255 41 +248 233 31 104 73 33 219 162 97 230 172 123 249 228 179 255 232 190 +255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 232 190 236 217 150 230 163 113 +225 161 106 104 73 33 200 156 55 249 230 10 255 255 41 255 255 41 +255 255 40 249 230 10 255 221 0 111 90 31 255 255 42 255 255 40 +255 255 41 255 255 40 255 255 42 156 123 43 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 9 2 0 156 123 43 255 255 42 255 255 40 255 255 41 +255 255 41 255 255 41 255 255 41 255 255 41 255 255 40 255 255 42 +156 123 43 155 112 61 236 169 118 236 169 118 236 217 150 255 234 192 +255 233 191 255 232 190 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 232 190 249 228 179 230 172 123 +236 169 118 164 128 83 156 123 43 255 232 0 255 222 0 255 222 0 +255 222 0 255 222 0 255 221 0 111 90 31 248 233 31 255 255 41 +255 255 41 255 255 41 255 255 42 123 94 35 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 65 48 15 255 255 42 255 255 40 255 255 41 255 255 41 +255 255 41 255 255 41 255 255 41 255 255 40 255 255 41 200 156 55 +98 62 37 115 82 46 119 92 52 119 92 52 131 100 59 161 127 82 +249 228 179 249 228 179 255 230 188 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 230 188 255 231 189 249 228 179 178 137 80 +115 82 46 115 82 46 40 20 7 156 123 43 253 230 2 255 221 0 +255 221 0 255 221 0 255 232 0 156 123 43 156 123 43 255 255 42 +255 255 41 255 255 41 255 255 41 123 94 35 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +9 2 0 200 156 55 255 255 41 255 255 41 255 255 41 255 255 41 +255 255 41 255 255 41 255 255 41 255 255 41 255 255 40 73 49 22 +83 51 28 155 112 61 164 128 83 146 115 67 164 128 83 133 97 51 +81 56 37 211 185 152 255 234 192 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 249 228 179 94 65 40 115 82 46 +164 128 83 153 118 66 133 97 51 65 48 15 255 221 0 255 222 0 +255 221 0 255 222 0 255 232 0 156 123 43 156 123 43 255 255 42 +255 255 41 255 255 41 255 255 42 249 230 10 40 20 7 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +4 0 2 248 233 31 255 255 40 255 255 41 255 255 41 255 255 41 +255 255 41 255 255 41 255 255 41 248 233 31 123 94 35 155 112 61 +230 163 113 236 169 118 200 154 86 94 65 40 138 104 59 236 217 150 +236 221 188 255 230 188 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 230 188 236 221 188 249 228 179 +180 145 91 89 60 38 168 130 70 166 125 65 116 86 23 255 221 0 +255 222 0 255 221 0 255 232 0 156 123 43 156 123 43 255 255 42 +255 255 41 255 255 41 255 255 42 249 230 10 65 48 15 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +116 86 23 248 233 31 255 255 41 255 255 41 255 255 41 255 255 41 +255 255 41 255 255 41 255 255 41 248 233 31 94 65 40 236 169 118 +232 166 115 143 108 61 104 74 41 104 74 41 32 15 7 115 82 46 +236 217 150 255 230 188 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 230 188 255 232 190 255 231 189 164 128 83 +22 13 4 98 62 37 106 76 45 190 135 80 166 125 65 116 86 23 +255 222 0 255 222 0 255 232 0 156 123 43 156 123 43 255 255 42 +255 255 40 255 255 41 255 255 42 249 230 10 65 48 15 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +156 123 43 255 255 40 255 255 41 255 255 41 255 255 41 255 255 41 +255 255 41 255 255 40 255 255 40 86 63 36 190 135 80 190 135 80 +42 24 20 42 24 20 73 53 28 81 56 37 82 57 39 42 24 20 +106 76 45 249 228 179 255 233 191 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 231 189 161 127 82 32 15 7 +82 57 39 82 57 39 73 53 28 73 53 28 99 70 33 133 97 51 +116 86 23 255 221 0 255 234 0 156 123 43 156 123 43 255 255 42 +255 255 42 255 255 40 248 233 31 253 230 2 65 48 15 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40 20 7 +255 221 0 255 255 40 255 255 40 255 255 41 255 255 41 255 255 41 +255 255 40 255 255 41 200 156 55 115 82 46 190 135 80 32 15 7 +42 24 20 161 127 82 172 197 155 172 197 155 172 197 155 212 211 185 +46 29 24 210 175 116 255 234 192 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 232 190 249 228 179 32 15 7 173 198 156 +173 198 156 172 197 155 186 149 103 161 127 82 82 57 39 20 10 4 +98 62 37 116 86 23 156 123 43 116 86 23 156 123 43 248 233 31 +248 233 31 255 222 0 255 221 0 253 230 2 65 48 15 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 116 86 23 +255 234 0 249 230 10 255 255 42 255 255 40 255 255 41 255 255 41 +255 255 41 255 255 41 111 90 31 190 135 80 106 76 45 22 13 4 +161 127 82 51 35 26 5 0 27 186 149 103 161 127 82 161 127 82 +212 211 185 215 204 162 255 232 190 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 249 228 179 199 209 176 172 197 155 +5 0 27 73 53 28 172 197 155 161 127 82 134 113 63 51 35 26 +58 38 16 190 135 80 115 82 46 4 0 2 156 123 43 253 230 2 +255 221 0 255 221 0 255 222 0 253 230 2 65 48 15 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 116 86 23 +255 232 0 255 222 0 255 255 40 255 255 42 255 255 41 255 255 41 +255 255 41 200 156 55 115 82 46 133 97 51 10 1 0 172 197 155 +51 35 26 5 0 27 46 29 24 212 211 185 247 255 212 107 78 54 +212 211 185 247 255 212 255 230 188 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 230 188 255 234 192 247 255 212 107 78 54 +5 0 27 82 57 39 247 255 212 247 255 212 134 113 63 172 197 155 +22 13 4 98 62 37 200 154 86 9 4 10 156 123 43 255 232 0 +255 221 0 255 222 0 255 222 0 253 230 2 65 48 15 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 116 86 23 +255 232 0 255 221 0 253 230 2 248 233 31 255 255 41 255 255 41 +255 255 42 200 156 55 57 32 26 22 13 4 82 57 39 230 232 196 +42 24 20 5 0 27 5 0 27 51 35 26 199 209 176 199 209 176 +134 113 63 247 255 212 255 230 188 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 230 188 255 234 192 199 209 176 5 0 27 +5 0 27 5 0 27 82 57 39 247 255 212 186 149 103 173 198 156 +134 113 63 9 2 0 69 42 21 46 29 24 116 86 23 255 221 0 +255 222 0 255 222 0 255 221 0 255 232 0 65 48 15 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 116 86 23 +255 232 0 255 222 0 255 221 0 255 221 0 253 230 2 248 233 31 +248 233 31 99 70 33 133 97 51 32 15 7 161 127 82 247 255 212 +51 35 26 107 78 54 51 35 26 5 0 27 46 29 24 199 209 176 +134 113 63 255 234 192 255 230 188 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 230 188 255 234 192 200 194 140 51 35 26 +107 78 54 46 29 24 5 0 27 107 78 54 186 149 103 199 209 176 +212 211 185 10 1 0 104 73 33 166 125 65 77 45 20 255 221 0 +255 222 0 255 221 0 255 234 0 156 123 43 9 4 10 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 116 86 23 +255 234 0 255 221 0 255 222 0 255 221 0 255 221 0 255 222 0 +255 221 0 83 51 28 98 62 37 133 97 51 134 113 63 247 255 212 +107 78 54 107 78 54 172 197 155 173 198 156 107 78 54 134 113 63 +186 149 103 255 234 192 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 234 192 211 185 152 82 57 39 +172 197 155 199 209 176 172 197 155 107 78 54 134 113 63 230 232 196 +199 209 176 104 73 33 83 51 28 190 135 80 75 50 26 255 221 0 +255 222 0 255 222 0 255 221 0 65 48 15 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 40 20 7 +200 156 55 253 230 2 255 222 0 255 222 0 255 222 0 255 222 0 +255 221 0 83 51 28 83 51 28 166 125 65 119 92 52 199 209 176 +212 211 185 82 57 39 51 35 26 82 57 39 82 57 39 131 100 59 +255 230 188 255 231 189 255 231 189 255 230 188 255 232 190 255 232 190 +255 230 188 255 231 189 255 231 189 255 231 189 255 234 192 180 145 91 +51 35 26 82 57 39 82 57 39 51 35 26 186 149 103 230 232 196 +107 78 54 190 135 80 75 50 26 133 97 51 116 86 23 156 123 43 +255 222 0 255 232 0 200 156 55 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +156 123 43 255 232 0 255 221 0 255 222 0 255 222 0 255 222 0 +255 221 0 40 20 7 65 48 15 73 53 28 229 163 112 222 164 108 +233 169 121 219 162 97 223 184 122 215 204 162 215 204 162 249 228 179 +255 230 188 255 231 189 255 231 189 255 232 190 236 217 150 227 181 122 +255 234 192 255 231 189 255 231 189 255 231 189 255 230 188 249 228 179 +235 224 165 215 204 162 215 204 162 235 224 165 249 228 179 230 172 123 +225 161 106 131 100 59 40 20 7 116 86 23 255 221 0 73 49 22 +255 222 0 255 232 0 200 156 55 4 0 2 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +116 86 23 255 221 0 255 222 0 255 222 0 255 222 0 255 222 0 +255 221 0 116 86 23 255 221 0 73 49 22 225 161 106 231 165 115 +231 165 115 236 217 150 255 232 190 255 233 191 255 233 191 255 232 190 +255 231 189 255 231 189 255 232 190 255 234 192 236 217 150 227 181 122 +255 234 192 255 233 191 255 233 191 255 231 189 255 231 189 255 232 190 +255 233 191 255 233 191 255 233 191 255 233 191 255 232 190 236 217 150 +236 169 118 94 65 40 255 221 0 255 232 0 255 221 0 73 49 22 +255 222 0 255 222 0 255 221 0 65 48 15 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +4 0 2 255 221 0 255 232 0 255 221 0 255 222 0 255 221 0 +255 232 0 156 123 43 156 123 43 200 156 55 131 100 59 236 169 118 +230 172 123 255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 230 188 236 217 150 235 224 165 236 221 188 236 221 188 +236 221 188 235 224 165 236 217 150 249 228 179 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 249 228 179 +178 137 80 116 86 23 255 221 0 255 222 0 255 221 0 73 49 22 +255 222 0 255 222 0 255 234 0 116 86 23 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 58 38 16 255 221 0 255 222 0 255 222 0 255 222 0 +253 230 2 200 156 55 156 123 43 200 156 55 94 65 40 236 169 118 +227 181 122 255 234 192 255 230 188 255 231 189 255 231 189 255 231 189 +255 231 189 255 234 192 186 149 103 36 17 7 58 38 16 40 20 7 +58 38 16 40 20 7 131 100 59 255 233 191 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 230 188 255 233 191 236 217 150 +155 112 61 123 94 35 255 234 0 255 221 0 255 222 0 65 48 15 +248 233 31 255 255 42 255 255 40 116 86 23 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 116 86 23 255 234 0 255 221 0 255 222 0 +255 221 0 255 234 0 116 86 23 200 156 55 116 86 23 190 135 80 +230 172 123 249 228 179 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 234 192 200 194 140 58 38 16 116 86 23 155 112 61 +116 86 23 77 45 20 134 113 63 255 234 192 255 230 188 255 231 189 +255 231 189 255 231 189 255 231 189 255 231 189 255 230 188 230 172 123 +99 70 33 255 221 0 255 222 0 253 230 2 156 123 43 156 123 43 +255 255 42 255 255 41 255 255 42 200 156 55 40 20 7 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 65 48 15 156 123 43 200 156 55 253 230 2 255 221 0 +255 221 0 255 232 0 116 86 23 255 221 0 156 123 43 115 82 46 +230 163 113 236 217 150 255 234 192 255 230 188 255 231 189 255 231 189 +255 231 189 255 234 192 200 194 140 40 20 7 155 112 61 190 135 80 +155 112 61 77 45 20 134 113 63 255 234 192 255 231 189 255 231 189 +255 231 189 255 231 189 255 230 188 255 234 192 236 217 150 155 112 61 +116 86 23 255 234 0 255 221 0 255 232 0 116 86 23 248 233 31 +255 255 40 255 255 41 255 255 40 255 255 42 65 48 15 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 65 48 15 156 123 43 200 156 55 253 230 2 253 230 2 +249 230 10 255 234 0 116 86 23 255 221 0 255 232 0 156 123 43 +115 82 46 236 169 118 249 228 179 255 232 190 255 231 189 255 230 188 +255 231 189 255 234 192 211 185 152 77 45 20 155 112 61 190 135 80 +190 135 80 77 45 20 186 149 103 255 234 192 255 231 189 255 231 189 +255 230 188 255 230 188 255 233 191 249 228 179 164 128 83 116 86 23 +200 156 55 255 222 0 255 221 0 255 232 0 116 86 23 248 233 31 +255 255 41 255 255 41 255 255 40 255 255 42 65 48 15 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 65 48 15 156 123 43 200 156 55 255 234 0 255 255 40 +255 255 42 255 255 40 116 86 23 255 221 0 255 222 0 255 232 0 +156 123 43 115 82 46 236 169 118 249 228 179 255 233 191 255 231 189 +255 231 189 255 231 189 255 234 192 134 113 63 77 45 20 190 135 80 +107 66 48 73 53 28 255 230 188 255 231 189 255 231 189 255 230 188 +255 232 190 255 234 192 249 228 179 164 128 83 116 86 23 255 221 0 +99 70 33 253 230 2 255 222 0 253 230 2 116 86 23 248 233 31 +255 255 41 255 255 41 255 255 41 255 255 41 65 48 15 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +4 0 2 116 86 23 156 123 43 200 156 55 255 255 40 255 255 41 +255 255 40 255 255 42 111 90 31 255 221 0 255 222 0 255 222 0 +255 232 0 156 123 43 115 82 46 186 149 103 249 228 179 255 234 192 +255 231 189 255 230 188 255 234 192 236 217 150 98 62 37 77 45 20 +77 45 20 212 179 122 255 234 192 255 230 188 255 230 188 255 232 190 +255 230 188 211 185 152 155 112 61 116 86 23 255 221 0 255 232 0 +156 123 43 156 123 43 255 234 0 156 123 43 156 123 43 255 255 41 +255 255 41 255 255 41 255 255 41 156 123 43 4 0 2 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +9 4 10 255 221 0 156 123 43 200 156 55 255 255 40 255 255 40 +255 255 41 255 255 42 111 90 31 255 221 0 255 222 0 255 221 0 +253 230 2 200 156 55 116 86 23 116 86 23 166 125 65 236 217 150 +255 230 188 255 234 192 255 231 189 255 234 192 236 217 150 146 115 67 +212 179 122 255 234 192 255 231 189 255 232 190 255 234 192 255 230 188 +208 160 108 116 86 23 65 48 15 255 221 0 255 222 0 255 232 0 +200 156 55 123 94 35 255 234 0 156 123 43 156 123 43 255 255 42 +255 255 41 255 255 40 255 255 42 123 94 35 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +22 13 4 255 221 0 156 123 43 200 156 55 255 255 40 255 255 41 +255 255 41 255 255 42 111 90 31 255 221 0 255 222 0 255 222 0 +255 232 0 116 86 23 255 221 0 253 230 2 116 86 23 86 63 36 +190 135 80 236 217 150 255 232 190 255 234 192 255 234 192 255 234 192 +255 234 192 255 234 192 255 234 192 255 230 188 212 179 122 133 97 51 +73 49 22 255 221 0 116 86 23 255 221 0 255 222 0 255 232 0 +200 156 55 123 94 35 255 234 0 156 123 43 200 156 55 255 255 41 +255 255 41 255 255 41 200 156 55 156 123 43 65 48 15 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 4 0 2 83 51 28 94 65 40 94 65 40 +89 60 38 22 13 4 83 51 28 89 60 38 9 2 0 0 0 0 +156 123 43 255 234 0 116 86 23 200 156 55 255 255 40 255 255 41 +255 255 41 255 255 41 156 123 43 156 123 43 255 222 0 255 222 0 +255 232 0 116 86 23 200 156 55 253 230 2 253 230 2 200 156 55 +40 20 7 104 73 33 146 115 67 210 175 116 249 228 179 255 230 188 +249 228 179 223 184 122 161 127 82 115 82 46 40 20 7 156 123 43 +253 230 2 255 234 0 116 86 23 255 221 0 255 222 0 255 232 0 +200 156 55 156 123 43 255 221 0 111 90 31 255 255 42 255 255 40 +255 255 41 255 255 41 156 123 43 200 156 55 65 48 15 0 0 0 +0 0 0 9 2 0 89 60 38 75 50 26 22 13 4 89 60 38 +94 65 40 94 65 40 83 51 28 4 0 2 0 0 0 0 0 0 +0 0 0 4 0 2 115 82 46 236 169 118 236 169 118 236 169 118 +232 166 115 75 50 26 190 135 80 232 166 115 133 97 51 4 0 2 +156 123 43 255 234 0 255 221 0 116 86 23 248 233 31 255 255 41 +255 255 41 255 255 40 255 255 42 65 48 15 253 230 2 255 221 0 +255 232 0 116 86 23 200 156 55 253 230 2 253 230 2 200 156 55 +98 62 37 133 97 51 104 73 33 83 51 28 89 60 38 107 78 54 +94 65 40 77 45 20 115 82 46 164 128 83 164 128 83 156 123 43 +255 232 0 255 232 0 116 86 23 255 221 0 255 222 0 255 232 0 +200 156 55 156 123 43 255 221 0 111 90 31 255 255 42 255 255 40 +255 255 41 248 233 31 73 49 22 255 234 0 65 48 15 0 0 0 +9 2 0 133 97 51 232 166 115 190 135 80 75 50 26 232 166 115 +236 169 118 236 169 118 236 169 118 115 82 46 4 0 2 0 0 0 +0 0 0 9 2 0 208 160 108 249 228 179 190 135 80 86 58 39 +81 56 37 73 53 28 89 60 38 84 59 38 155 112 61 107 66 48 +156 123 43 255 232 0 255 234 0 73 49 22 255 255 41 255 255 40 +255 255 41 255 255 41 255 255 41 116 86 23 255 221 0 255 222 0 +255 232 0 156 123 43 200 156 55 255 222 0 253 230 2 200 156 55 +83 51 28 190 135 80 182 141 64 166 125 65 155 112 61 155 112 61 +155 112 61 208 160 108 249 228 179 255 234 192 200 194 140 123 94 35 +255 234 0 156 123 43 156 123 43 253 230 2 255 222 0 255 232 0 +156 123 43 156 123 43 116 86 23 248 233 31 255 255 41 255 255 41 +248 233 31 116 86 23 255 221 0 255 232 0 65 48 15 0 0 0 +116 87 35 155 112 61 84 59 38 89 60 38 73 53 28 81 56 37 +86 58 39 190 135 80 249 228 179 208 160 108 4 0 2 0 0 0 +0 0 0 0 0 0 211 185 152 235 224 165 83 51 28 211 185 152 +230 172 123 219 162 97 131 100 59 115 82 46 40 20 7 57 32 26 +156 123 43 255 234 0 255 222 0 156 123 43 156 123 43 255 255 42 +255 255 41 255 255 41 255 255 41 248 233 31 116 86 23 255 234 0 +255 221 0 253 230 2 65 48 15 255 222 0 255 232 0 255 221 0 +83 51 28 182 141 64 166 125 65 166 125 65 190 135 80 227 165 115 +249 228 179 255 233 191 255 232 190 255 234 192 186 149 103 123 94 35 +255 234 0 156 123 43 156 123 43 255 232 0 255 221 0 255 222 0 +255 221 0 116 86 23 156 123 43 255 255 41 255 255 41 248 233 31 +116 86 23 255 221 0 253 230 2 253 230 2 65 48 15 0 0 0 +77 45 20 40 20 7 115 82 46 131 100 59 219 162 97 230 172 123 +211 185 152 83 51 28 249 228 179 211 185 152 0 0 0 0 0 0 +0 0 0 83 51 28 249 228 179 186 149 103 99 70 33 249 228 179 +227 181 122 98 62 37 133 97 51 164 128 83 161 127 82 143 108 61 +83 51 28 255 221 0 253 230 2 253 230 2 156 123 43 99 70 33 +248 233 31 248 233 31 248 233 31 200 156 55 116 86 23 255 234 0 +255 232 0 255 232 0 156 123 43 123 94 35 156 123 43 83 51 28 +155 112 61 190 135 80 225 161 106 211 185 152 249 228 179 255 231 189 +255 233 191 255 231 189 255 231 189 255 234 192 235 224 165 121 95 40 +116 86 23 156 123 43 156 123 43 255 234 0 255 232 0 255 234 0 +200 156 55 123 94 35 248 233 31 248 233 31 248 233 31 123 94 35 +255 221 0 253 230 2 255 221 0 255 232 0 58 38 16 40 20 7 +143 108 61 161 127 82 164 128 83 133 97 51 98 62 37 227 181 122 +249 228 179 98 62 37 186 149 103 249 228 179 83 51 28 0 0 0 +0 0 0 143 108 61 252 233 179 131 100 59 146 115 67 255 234 192 +146 115 67 133 97 51 230 172 123 190 135 80 83 51 28 94 65 40 +80 54 33 83 51 28 255 221 0 255 232 0 255 221 0 156 123 43 +83 51 28 84 59 38 86 63 36 86 63 36 69 42 21 156 123 43 +156 123 43 200 156 55 104 73 33 69 42 21 155 112 61 208 160 108 +236 217 150 249 228 179 255 231 189 255 234 192 255 233 191 255 231 189 +255 230 188 255 231 189 255 231 189 255 230 188 255 232 190 249 228 179 +186 149 103 94 65 40 83 51 28 156 123 43 156 123 43 156 123 43 +73 49 22 84 59 38 86 63 36 86 63 36 75 50 26 156 123 43 +255 221 0 253 230 2 253 230 2 255 221 0 75 50 26 82 57 39 +94 65 40 83 51 28 190 135 80 230 172 123 133 97 51 146 115 67 +255 234 192 146 115 67 131 100 59 252 233 179 143 108 61 0 0 0 +0 0 0 161 127 82 249 228 179 83 51 28 211 185 152 255 230 188 +104 73 33 180 145 91 249 228 179 107 78 54 166 125 65 236 217 150 +236 217 150 190 135 80 104 73 33 255 221 0 116 86 23 107 78 54 +200 154 86 236 169 118 236 217 150 235 224 165 236 217 150 186 149 103 +146 115 67 107 66 48 83 51 28 133 97 51 236 169 118 249 228 179 +255 234 192 255 233 191 255 231 189 255 231 189 255 230 188 255 231 189 +255 231 189 255 230 188 255 231 189 255 232 190 255 234 192 255 230 188 +236 217 150 190 135 80 98 62 37 98 62 37 131 100 59 161 127 82 +227 181 122 249 228 179 236 217 150 235 224 165 227 181 122 131 100 59 +99 70 33 255 221 0 255 221 0 99 70 33 190 135 80 236 169 118 +238 197 114 166 125 65 107 78 54 249 228 179 180 145 91 104 73 33 +255 230 188 212 179 122 83 51 28 249 228 179 161 127 82 0 0 0 +58 38 16 227 181 122 215 204 162 84 59 38 249 228 179 212 179 122 +83 51 28 236 217 150 211 185 152 98 62 37 227 181 122 255 233 191 +249 228 179 227 181 122 119 92 52 40 20 7 166 125 65 236 169 118 +236 217 150 249 228 179 255 232 190 255 234 192 255 234 192 255 234 192 +255 234 192 249 228 179 208 160 108 115 82 46 58 38 16 155 112 61 +230 172 123 249 228 179 255 233 191 255 232 190 255 230 188 255 231 189 +255 230 188 255 231 189 255 233 191 255 230 188 227 181 122 190 135 80 +77 45 20 98 62 37 190 135 80 236 217 150 255 231 189 255 234 192 +255 234 192 255 234 192 255 234 192 255 234 192 255 232 190 255 230 188 +208 160 108 83 51 28 22 13 4 131 100 59 229 163 112 229 163 112 +236 217 150 236 217 150 98 62 37 211 185 152 236 217 150 83 51 28 +212 179 122 249 228 179 84 59 38 215 204 162 227 181 122 58 38 16 +81 56 37 249 228 179 215 204 162 143 108 61 255 234 192 164 128 83 +107 78 54 253 234 183 180 145 91 131 100 59 255 232 190 249 228 179 +155 112 61 32 15 7 99 70 33 166 125 65 236 169 118 236 217 150 +255 230 188 255 232 190 255 231 189 255 230 188 255 231 189 255 231 189 +255 231 189 255 233 191 255 233 191 236 217 150 222 164 108 104 74 41 +77 45 20 133 97 51 227 165 115 249 228 179 255 232 190 255 231 189 +255 231 189 255 230 188 227 181 122 155 112 61 98 62 37 83 51 28 +190 135 80 236 217 150 255 230 188 255 234 192 255 232 190 255 231 189 +255 230 188 255 231 189 255 231 189 255 230 188 255 231 189 255 233 191 +255 230 188 222 164 108 58 38 16 69 42 21 40 20 7 143 108 61 +236 217 150 255 231 189 124 98 54 186 149 103 253 234 183 107 78 54 +164 128 83 255 234 192 143 108 61 215 204 162 249 228 179 81 56 37 +81 56 37 236 217 150 249 228 179 235 224 165 255 233 191 98 62 37 +186 149 103 245 232 191 98 62 37 208 160 108 255 234 192 249 228 179 +208 160 108 153 118 66 98 62 37 190 135 80 236 217 150 255 230 188 +255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 233 191 255 230 188 249 228 179 +211 185 152 186 149 103 211 185 152 249 228 179 255 232 190 255 231 189 +255 231 189 255 230 188 236 217 150 186 149 103 210 175 116 236 217 150 +255 230 188 255 234 192 255 231 189 255 230 188 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 255 230 188 +255 232 190 255 230 188 166 125 65 69 42 21 153 118 66 178 137 80 +233 170 120 255 231 189 208 160 108 98 62 37 245 232 191 186 149 103 +98 62 37 255 233 191 235 224 165 249 228 179 236 217 150 81 56 37 +58 38 16 190 135 80 236 217 150 255 233 191 255 232 190 200 154 86 +236 217 150 236 221 188 98 62 37 236 217 150 255 233 191 255 231 189 +255 234 192 249 228 179 143 108 61 115 82 46 255 230 188 255 231 189 +255 230 188 255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 230 188 255 231 189 255 233 191 +255 234 192 255 234 192 255 234 192 255 232 190 255 230 188 255 231 189 +255 230 188 255 231 189 255 234 192 255 234 192 255 234 192 255 234 192 +255 232 190 255 230 188 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 230 188 115 82 46 143 108 61 236 169 118 236 169 118 +229 163 112 249 228 179 249 228 179 98 62 37 236 221 188 236 217 150 +200 154 86 255 233 191 255 232 190 236 217 150 190 135 80 42 24 20 +0 0 0 58 38 16 190 135 80 236 217 150 235 224 165 255 234 192 +255 234 192 255 230 188 227 181 122 255 230 188 255 231 189 255 230 188 +255 231 189 255 233 191 227 181 122 75 50 26 236 221 188 255 231 189 +255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 +255 232 190 236 221 188 73 53 28 225 161 106 231 165 115 230 164 114 +229 163 112 227 181 122 249 228 179 227 181 122 255 230 188 255 234 192 +249 228 179 236 217 150 236 217 150 190 135 80 58 38 16 0 0 0 +0 0 0 0 0 0 40 20 7 104 73 33 200 154 86 230 172 123 +236 217 150 249 228 179 255 232 190 255 232 190 255 232 190 255 230 188 +255 231 189 255 232 190 249 228 179 94 65 40 236 221 188 255 231 189 +255 231 189 255 232 190 255 233 191 255 233 191 255 231 189 255 230 188 +255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 255 230 188 +255 232 190 255 234 192 255 230 188 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 +255 230 188 255 231 189 255 233 191 255 233 191 255 231 189 255 230 188 +255 231 189 236 221 188 84 59 38 236 169 118 231 165 115 231 165 115 +230 164 114 230 163 113 230 172 123 227 181 122 230 172 123 227 181 122 +236 169 118 200 154 86 104 73 33 40 20 7 9 2 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 20 10 4 115 82 46 +190 135 80 236 169 118 233 169 121 236 217 150 249 228 179 255 232 190 +255 230 188 255 234 192 236 217 150 75 50 26 211 185 152 255 233 191 +255 230 188 249 228 179 235 224 165 235 224 165 255 230 188 255 233 191 +255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 255 233 191 +255 230 188 236 217 150 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 255 230 188 +255 231 189 255 230 188 235 224 165 249 228 179 255 230 188 255 231 189 +255 233 191 211 185 152 69 42 21 200 154 86 232 168 117 231 165 115 +231 165 115 230 164 114 230 163 113 231 165 115 236 169 118 190 135 80 +115 82 46 20 10 4 9 2 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +36 17 7 104 74 41 200 154 86 231 165 115 230 172 123 249 228 179 +255 231 189 255 234 192 236 217 150 69 42 21 208 160 108 255 234 192 +255 233 191 227 181 122 219 162 97 232 166 115 230 172 123 236 217 150 +255 231 189 255 233 191 255 234 192 255 234 192 255 234 192 255 234 192 +255 234 192 255 234 192 255 232 190 255 231 189 255 231 189 236 217 150 +225 161 106 227 181 122 255 234 192 255 234 192 255 234 192 255 234 192 +255 234 192 255 234 192 255 234 192 255 232 190 255 231 189 255 231 189 +255 230 188 236 217 150 225 161 106 219 162 97 249 228 179 255 231 189 +255 234 192 208 160 108 73 49 22 229 163 112 231 165 115 231 165 115 +231 165 115 230 164 114 236 169 118 200 154 86 104 74 41 36 17 7 +0 0 0 4 0 2 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 58 38 16 200 154 86 231 165 115 227 181 122 +255 233 191 255 231 189 249 228 179 168 130 70 94 65 40 249 228 179 +255 233 191 255 231 189 131 100 59 155 112 61 230 172 123 255 230 188 +255 234 192 249 228 179 211 185 152 211 185 152 211 185 152 211 185 152 +211 185 152 235 224 165 255 230 188 255 234 192 236 217 150 200 154 86 +190 135 80 236 217 150 249 228 179 215 204 162 211 185 152 211 185 152 +211 185 152 211 185 152 236 217 150 255 230 188 255 234 192 255 234 192 +249 228 179 190 135 80 98 62 37 227 181 122 255 232 190 255 232 190 +249 228 179 94 65 40 166 125 65 236 169 118 230 164 114 230 164 114 +229 163 112 232 166 115 200 154 86 58 38 16 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 133 97 51 232 166 115 227 181 122 +255 234 192 255 230 188 255 234 192 227 181 122 69 42 21 227 181 122 +255 234 192 255 230 188 225 161 106 75 50 26 233 178 115 186 149 103 +131 100 59 104 73 33 82 57 39 107 78 54 107 78 54 107 78 54 +82 57 39 89 60 38 131 100 59 146 115 67 138 104 59 182 141 64 +123 94 35 119 92 52 115 82 46 82 57 39 107 78 54 107 78 54 +107 78 54 91 67 37 86 63 36 119 92 52 146 115 67 161 127 82 +236 169 118 107 78 54 166 125 65 249 228 179 255 232 190 255 234 192 +236 217 150 69 42 21 225 161 106 231 165 115 230 163 113 232 168 117 +227 181 122 230 172 123 119 92 52 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 36 17 7 200 154 86 236 217 150 +255 233 191 255 231 189 255 231 189 249 228 179 104 73 33 153 118 66 +236 217 150 236 217 150 200 154 86 42 24 20 73 49 22 107 78 54 +161 127 82 172 197 155 212 216 184 231 255 198 235 255 203 232 255 199 +231 255 198 172 197 155 186 149 103 132 119 61 107 78 54 69 42 21 +107 78 54 161 127 82 172 197 155 210 220 166 231 255 198 232 255 199 +235 255 203 231 255 198 189 206 156 172 197 155 161 127 82 134 113 63 +75 50 26 42 24 20 155 112 61 227 181 122 249 228 179 255 234 192 +164 128 83 104 73 33 230 164 114 230 163 113 231 165 115 236 217 150 +255 234 192 215 204 162 32 15 7 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 186 149 103 249 228 179 +255 231 189 255 231 189 255 230 188 255 233 191 161 127 82 115 82 46 +236 169 118 190 135 80 80 54 33 82 57 39 172 197 155 230 232 196 +247 255 212 237 255 203 235 255 203 232 255 199 231 255 198 232 255 198 +231 255 198 212 216 184 172 197 155 107 78 54 107 78 54 172 197 155 +212 216 184 237 255 203 231 255 198 212 216 184 191 208 160 212 216 184 +231 255 198 233 255 199 237 255 203 237 255 203 247 255 212 232 255 199 +173 198 156 125 102 55 51 35 26 155 112 61 236 217 150 255 230 188 +115 82 46 161 127 82 236 169 118 232 168 117 236 217 150 255 232 190 +255 234 192 212 203 153 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 4 0 2 186 149 103 255 234 192 +255 230 188 255 231 189 255 231 189 255 232 190 208 160 108 83 51 28 +166 125 65 91 67 37 172 197 155 212 216 184 212 216 184 161 127 82 +161 127 82 191 208 160 230 232 196 231 255 198 231 255 198 231 255 198 +231 255 198 232 255 199 235 255 203 232 255 199 212 216 184 210 220 166 +210 220 166 199 209 176 173 198 156 189 206 156 230 232 196 233 255 199 +231 255 198 231 255 198 230 232 196 199 209 176 186 149 103 134 113 63 +191 208 160 212 216 184 173 198 156 107 78 54 166 125 65 215 204 162 +83 51 28 200 154 86 232 166 115 236 217 150 255 232 190 255 231 189 +255 234 192 215 204 162 4 0 2 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 9 2 0 186 149 103 255 234 192 +255 231 189 255 231 189 255 231 189 255 232 190 249 228 179 104 74 41 +32 15 7 172 197 155 230 232 196 161 127 82 51 35 26 125 102 55 +172 197 155 212 216 184 231 255 198 231 255 198 231 255 198 231 255 198 +231 255 198 231 255 198 231 255 198 231 255 198 212 216 184 199 209 176 +172 197 155 172 197 155 191 208 160 230 232 196 232 255 198 231 255 198 +231 255 198 231 255 198 231 255 198 230 232 196 172 197 155 132 119 61 +51 35 26 125 102 55 212 216 184 191 208 160 82 57 39 186 149 103 +106 76 45 236 169 118 232 170 121 249 228 179 255 232 190 255 231 189 +255 234 192 215 204 162 4 0 2 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 9 2 0 186 149 103 255 234 192 +255 231 189 255 231 189 255 231 189 255 233 191 249 228 179 138 104 59 +42 24 20 191 208 160 161 127 82 91 67 37 172 197 155 212 216 184 +235 255 203 232 255 199 231 255 198 231 255 198 231 255 198 231 255 198 +231 255 198 231 255 198 231 255 198 199 209 176 212 216 184 173 198 156 +172 197 155 173 198 156 230 232 196 232 255 198 231 255 198 231 255 198 +231 255 198 231 255 198 231 255 198 232 255 198 233 255 199 230 232 196 +173 198 156 125 102 55 107 78 54 199 209 176 82 57 39 138 104 59 +107 78 54 236 169 118 227 181 122 255 234 192 255 230 188 255 231 189 +255 234 192 215 204 162 4 0 2 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 186 149 103 255 234 192 +255 231 189 255 231 189 255 231 189 255 232 190 249 228 179 236 169 118 +133 97 51 73 53 28 107 78 54 172 197 155 199 209 176 232 255 199 +231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 +212 216 184 199 209 176 212 216 184 199 209 176 199 209 176 173 198 156 +199 209 176 199 209 176 173 198 156 231 255 198 231 255 198 231 255 198 +231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 232 255 198 +230 232 196 191 208 160 134 113 63 73 53 28 106 76 45 83 51 28 +168 130 70 236 169 118 236 217 150 255 232 190 255 231 189 255 231 189 +255 234 192 211 185 152 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 22 13 4 208 160 108 255 233 191 +255 231 189 255 231 189 255 231 189 255 231 189 255 233 191 236 217 150 +225 161 106 83 51 28 161 127 82 191 208 160 230 232 196 232 255 198 +231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 212 216 184 +199 209 176 199 209 176 199 209 176 199 209 176 199 209 176 199 209 176 +173 198 156 173 198 156 199 209 176 231 255 198 231 255 198 231 255 198 +231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 +232 255 198 230 232 196 172 197 155 73 53 28 155 112 61 73 53 28 +236 169 118 231 165 115 255 230 188 255 230 188 255 231 189 255 231 189 +255 234 192 215 204 162 22 13 4 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 133 97 51 236 169 118 255 231 189 +255 231 189 255 231 189 255 231 189 255 230 188 255 234 192 236 217 150 +200 154 86 82 57 39 173 198 156 199 209 176 232 255 199 231 255 198 +231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 +173 198 156 173 198 156 199 209 176 173 198 156 199 209 176 212 216 184 +199 209 176 173 198 156 199 209 176 231 255 198 231 255 198 231 255 198 +231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 +231 255 198 232 255 199 230 232 196 132 119 61 104 73 33 80 54 33 +232 166 115 230 172 123 255 230 188 255 230 188 255 231 189 255 231 189 +255 232 190 249 228 179 115 82 46 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 138 104 59 236 169 118 255 230 188 +255 231 189 255 231 189 255 231 189 255 231 189 255 232 190 249 228 179 +166 125 65 107 78 54 189 206 156 230 232 196 231 255 198 231 255 198 +231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 +230 232 196 212 216 184 199 209 176 173 198 156 173 198 156 199 209 176 +199 209 176 173 198 156 199 209 176 199 209 176 231 255 198 231 255 198 +231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 +231 255 198 231 255 198 237 255 203 161 127 82 104 73 33 84 59 38 +232 166 115 235 224 165 255 232 190 255 231 189 255 231 189 255 231 189 +255 231 189 255 233 191 146 115 67 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 138 104 59 236 169 118 255 231 189 +255 231 189 255 231 189 255 231 189 255 231 189 255 230 188 255 234 192 +82 57 39 172 197 155 173 198 156 231 255 198 231 255 198 231 255 198 +231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 +231 255 198 199 209 176 199 209 176 173 198 156 199 209 176 199 209 176 +173 198 156 230 232 196 231 255 198 173 198 156 230 232 196 231 255 198 +231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 +231 255 198 231 255 198 233 255 199 212 216 184 82 57 39 166 125 65 +230 163 113 235 224 165 255 233 191 255 231 189 255 231 189 255 231 189 +255 230 188 255 234 192 161 127 82 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 138 104 59 236 169 118 255 231 189 +255 231 189 255 231 189 255 231 189 255 231 189 255 230 188 255 234 192 +82 57 39 172 197 155 172 197 155 231 255 198 231 255 198 231 255 198 +231 255 198 231 255 198 231 255 198 231 255 198 199 209 176 231 255 198 +231 255 198 212 216 184 173 198 156 199 209 176 173 198 156 173 198 156 +199 209 176 231 255 198 212 216 184 173 198 156 199 209 176 231 255 198 +231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 +231 255 198 231 255 198 232 255 198 230 232 196 82 57 39 200 154 86 +233 170 120 249 228 179 255 232 190 255 231 189 255 231 189 255 231 189 +255 231 189 255 234 192 161 127 82 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 138 104 59 236 169 118 255 231 189 +255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 255 233 191 +82 57 39 172 197 155 172 197 155 212 216 184 231 255 198 231 255 198 +231 255 198 231 255 198 231 255 198 231 255 198 199 209 176 199 209 176 +231 255 198 231 255 198 231 255 198 199 209 176 173 198 156 199 209 176 +231 255 198 231 255 198 199 209 176 173 198 156 199 209 176 231 255 198 +231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 +231 255 198 231 255 198 233 255 199 231 255 198 82 57 39 190 135 80 +236 217 150 255 233 191 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 234 192 161 127 82 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 138 104 59 236 169 118 255 231 189 +255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 255 234 192 +119 92 52 132 119 61 173 198 156 172 197 155 212 216 184 231 255 198 +231 255 198 231 255 198 231 255 198 231 255 198 212 216 184 199 209 176 +230 232 196 231 255 198 231 255 198 199 209 176 173 198 156 173 198 156 +199 209 176 199 209 176 199 209 176 173 198 156 231 255 198 231 255 198 +231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 +231 255 198 231 255 198 235 255 203 172 197 155 86 63 36 219 162 97 +236 217 150 255 234 192 255 230 188 255 231 189 255 231 189 255 231 189 +255 231 189 255 234 192 161 127 82 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 138 104 59 236 169 118 255 231 189 +255 230 188 255 231 189 255 231 189 255 231 189 255 231 189 255 234 192 +200 154 86 82 57 39 191 208 160 172 197 155 173 198 156 212 216 184 +231 255 198 232 255 199 231 255 198 231 255 198 231 255 198 199 209 176 +199 209 176 199 209 176 199 209 176 199 209 176 173 198 156 212 216 184 +199 209 176 173 198 156 173 198 156 199 209 176 232 255 199 231 255 198 +231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 +231 255 198 231 255 198 235 255 203 132 119 61 133 97 51 236 169 118 +236 217 150 255 233 191 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 234 192 161 127 82 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 138 104 59 236 169 118 255 230 188 +255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 255 233 191 +211 185 152 82 57 39 172 197 155 173 198 156 172 197 155 172 197 155 +206 210 177 230 232 196 233 255 199 233 255 199 231 255 198 231 255 198 +199 209 176 199 209 176 173 198 156 173 198 156 199 209 176 191 208 160 +172 197 155 172 197 155 199 209 176 230 232 196 230 232 196 231 255 198 +233 255 199 233 255 199 233 255 199 231 255 198 231 255 198 231 255 198 +231 255 198 231 255 198 199 209 176 107 78 54 166 125 65 233 170 120 +249 228 179 255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 234 192 161 127 82 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 138 104 59 236 169 118 236 217 150 +255 233 191 255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 +255 230 188 133 97 51 125 102 55 189 206 156 173 198 156 172 197 155 +172 197 155 173 198 156 199 209 176 212 216 184 231 255 198 233 255 199 +232 255 199 230 232 196 199 209 176 173 198 156 191 208 160 172 197 155 +172 197 155 172 197 155 172 197 155 172 197 155 173 198 156 199 209 176 +199 209 176 199 209 176 212 216 184 232 255 198 232 255 199 232 255 199 +231 255 198 212 216 184 186 149 103 83 51 28 230 163 113 230 172 123 +255 234 192 255 230 188 255 231 189 255 231 189 255 231 189 255 231 189 +255 230 188 255 234 192 161 127 82 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 138 104 59 236 169 118 227 181 122 +255 234 192 255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 227 165 115 86 63 36 161 127 82 189 206 156 173 198 156 +172 197 155 172 197 155 172 197 155 172 197 155 189 206 156 191 208 160 +191 208 160 191 208 160 173 198 156 172 197 155 172 197 155 173 198 156 +173 198 156 173 198 156 173 198 156 173 198 156 172 197 155 172 197 155 +172 197 155 172 197 155 173 198 156 189 206 156 189 206 156 191 208 160 +191 208 160 172 197 155 86 63 36 190 135 80 232 166 115 230 172 123 +255 233 191 255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 230 188 138 104 59 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 77 45 20 219 162 97 236 217 150 +255 234 192 255 230 188 255 231 189 255 231 189 255 231 189 255 230 188 +255 234 192 235 224 165 200 154 86 96 68 37 125 102 55 172 197 155 +191 208 160 173 198 156 173 198 156 172 197 155 172 197 155 172 197 155 +172 197 155 172 197 155 172 197 155 173 198 156 173 198 156 173 198 156 +173 198 156 173 198 156 173 198 156 173 198 156 172 197 155 172 197 155 +172 197 155 172 197 155 173 198 156 173 198 156 173 198 156 172 197 155 +132 119 61 82 57 39 115 82 46 236 169 118 229 163 112 230 172 123 +255 233 191 255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 +255 234 192 235 224 165 69 42 21 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 190 135 80 227 181 122 +249 228 179 255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 +255 234 192 236 217 150 200 154 86 96 68 37 107 78 54 82 57 39 +107 78 54 172 197 155 172 197 155 172 197 155 172 197 155 173 198 156 +173 198 156 173 198 156 173 198 156 172 197 155 173 198 156 173 198 156 +173 198 156 172 197 155 172 197 155 172 197 155 172 197 155 172 197 155 +172 197 155 173 198 156 172 197 155 107 78 54 82 57 39 82 57 39 +107 78 54 172 197 155 73 53 28 200 154 86 230 164 114 230 172 123 +255 234 192 255 230 188 255 231 189 255 231 189 255 231 189 255 230 188 +255 234 192 211 185 152 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 9 2 0 190 135 80 232 166 115 +236 217 150 255 234 192 255 231 189 255 231 189 255 231 189 255 231 189 +255 234 192 249 228 179 98 62 37 161 127 82 212 216 184 173 198 156 +161 127 82 82 57 39 172 197 155 191 208 160 173 198 156 172 197 155 +161 127 82 186 149 103 173 198 156 191 208 160 189 206 156 173 198 156 +172 197 155 172 197 155 173 198 156 191 208 160 212 216 184 231 255 198 +231 255 198 231 255 198 231 255 198 210 220 166 210 220 166 210 220 166 +231 255 198 230 232 196 161 127 82 104 74 41 236 169 118 230 172 123 +249 228 179 255 232 190 255 230 188 255 231 189 255 231 189 255 231 189 +255 231 189 186 149 103 9 2 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 4 0 2 99 70 33 232 166 115 +236 217 150 255 232 190 255 230 188 255 231 189 255 231 189 255 230 188 +255 232 190 236 217 150 89 60 38 172 197 155 212 216 184 233 255 199 +235 255 203 237 255 203 233 255 199 231 255 198 212 216 184 172 197 155 +125 102 55 107 78 54 107 78 54 107 78 54 125 102 55 172 197 155 +191 208 160 212 216 184 232 255 199 237 255 203 235 255 203 233 255 199 +233 255 199 233 255 199 232 255 199 233 255 199 233 255 199 233 255 199 +232 255 198 212 216 184 172 197 155 94 65 40 236 169 118 229 163 112 +227 181 122 255 230 188 255 231 189 255 231 189 255 230 188 255 233 191 +236 217 150 98 62 37 4 0 2 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 22 13 4 190 135 80 +233 169 121 249 228 179 255 234 192 255 231 189 255 231 189 255 234 192 +249 228 179 233 169 121 166 125 65 91 67 37 172 197 155 212 216 184 +237 255 203 237 255 203 237 255 203 235 255 203 212 216 184 173 198 156 +132 119 61 81 56 37 138 104 59 178 137 80 133 97 51 73 53 28 +82 57 39 107 78 54 86 63 36 161 127 82 173 198 156 211 215 171 +212 216 184 230 232 196 233 255 199 237 255 203 237 255 203 235 255 203 +212 216 184 172 197 155 82 57 39 168 130 70 236 169 118 230 164 114 +230 164 114 249 228 179 255 233 191 255 230 188 255 232 190 255 230 188 +208 160 108 22 13 4 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 96 68 37 +236 169 118 227 181 122 249 228 179 255 232 190 255 232 190 249 228 179 +227 181 122 230 164 114 230 163 113 104 73 33 51 35 26 161 127 82 +186 149 103 186 149 103 161 127 82 132 119 61 86 63 36 80 54 33 +133 97 51 219 162 97 236 169 118 236 169 118 232 166 115 225 161 106 +225 161 106 225 161 106 200 154 86 106 76 45 84 59 38 94 65 40 +86 58 39 86 63 36 132 119 61 161 127 82 186 149 103 161 127 82 +107 78 54 9 2 0 22 13 4 166 125 65 232 166 115 231 165 115 +229 163 112 227 181 122 249 228 179 255 233 191 249 228 179 227 181 122 +98 62 37 9 2 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 32 15 7 +166 125 65 232 166 115 233 170 120 227 181 122 227 181 122 232 168 117 +232 166 115 225 161 106 115 82 46 9 2 0 0 0 0 106 76 45 +138 104 59 131 100 59 131 100 59 131 100 59 190 135 80 236 169 118 +236 169 118 231 165 115 231 165 115 230 164 114 231 165 115 231 165 115 +231 165 115 231 165 115 232 166 115 236 169 118 236 169 118 236 169 118 +236 169 118 186 149 103 146 115 67 146 115 67 146 115 67 104 73 33 +10 1 0 0 0 0 0 0 0 32 15 7 166 125 65 236 169 118 +232 168 117 230 163 113 227 181 122 249 228 179 227 181 122 155 112 61 +32 15 7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +20 10 4 155 112 61 225 161 106 236 169 118 236 169 118 236 169 118 +208 160 108 115 82 46 4 0 2 0 0 0 0 0 0 180 145 91 +236 169 118 236 169 118 236 169 118 236 169 118 236 169 118 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 230 163 113 231 165 115 230 172 123 235 224 165 +249 228 179 255 232 190 255 234 192 255 234 192 249 228 179 233 170 120 +22 13 4 0 0 0 0 0 0 0 0 0 20 10 4 155 112 61 +225 161 106 230 163 113 230 163 113 225 161 106 155 112 61 20 10 4 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 58 38 16 138 104 59 146 115 67 133 97 51 +22 13 4 0 0 0 0 0 0 0 0 0 0 0 0 166 125 65 +236 169 118 230 164 114 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 230 164 114 232 168 117 236 217 150 255 233 191 255 232 190 +255 232 190 255 231 189 255 231 189 255 231 189 255 234 192 227 165 115 +22 13 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +58 38 16 116 87 35 116 87 35 58 38 16 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 58 38 16 +229 163 112 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +230 164 114 229 163 112 227 181 122 255 232 190 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 230 188 255 234 192 119 92 52 +4 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 20 10 4 +229 163 112 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +230 163 113 232 168 117 249 228 179 255 232 190 255 230 188 255 231 189 +255 231 189 255 231 189 255 231 189 255 232 190 249 228 179 81 56 37 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22 13 4 +200 154 86 232 166 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +229 163 112 227 181 122 255 233 191 255 230 188 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 234 192 236 217 150 69 42 21 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 0 2 +94 65 40 236 169 118 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +230 163 113 249 228 179 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 234 192 186 149 103 9 2 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +73 53 28 236 169 118 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +229 163 112 249 228 179 255 232 190 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 234 192 161 127 82 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +73 53 28 236 169 118 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 230 163 113 +230 172 123 255 230 188 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 234 192 161 127 82 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 20 10 4 +190 135 80 232 168 117 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 229 163 112 +236 217 150 255 233 191 255 230 188 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 234 192 227 181 122 58 38 16 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 20 10 4 +229 163 112 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 230 164 114 230 163 113 230 163 113 230 164 114 229 163 112 +236 217 150 255 234 192 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 232 190 249 228 179 73 53 28 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 115 82 46 +232 166 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +230 164 114 230 163 113 230 172 123 236 217 150 233 169 121 225 161 106 +236 217 150 255 233 191 255 230 188 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 231 189 255 234 192 164 128 83 +9 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 178 137 80 +236 169 118 230 164 114 231 165 115 231 165 115 231 165 115 230 164 114 +231 165 115 236 217 150 255 230 188 255 232 190 235 224 165 233 169 121 +230 172 123 255 230 188 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 230 188 255 234 192 227 181 122 +20 10 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 58 38 16 200 154 86 +232 168 117 231 165 115 231 165 115 231 165 115 231 165 115 229 163 112 +227 181 122 255 231 189 255 231 189 255 231 189 255 230 188 229 163 112 +219 162 97 249 228 179 255 232 190 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 231 189 255 231 189 249 228 179 +89 60 38 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 9 2 0 131 100 59 236 169 118 +230 164 114 231 165 115 231 165 115 231 165 115 230 164 114 232 168 117 +249 228 179 255 232 190 255 230 188 255 233 191 236 217 150 116 87 35 +166 125 65 255 230 188 255 232 190 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 231 189 255 231 189 255 230 188 255 234 192 +186 149 103 20 10 4 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 32 15 7 166 125 65 232 166 115 +231 165 115 231 165 115 231 165 115 231 165 115 229 163 112 227 181 122 +255 233 191 255 230 188 255 231 189 255 234 192 208 160 108 69 42 21 +225 161 106 255 230 188 255 231 189 255 231 189 255 231 189 255 231 189 +255 231 189 255 231 189 255 232 190 255 234 192 255 234 192 249 228 179 +208 160 108 58 38 16 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 20 10 4 98 62 37 32 15 7 190 135 80 +236 169 118 230 164 114 231 165 115 231 165 115 230 163 113 249 228 179 +255 231 189 255 231 189 255 230 188 255 234 192 227 181 122 155 112 61 +227 181 122 255 232 190 255 232 190 255 231 189 255 230 188 255 231 189 +255 231 189 255 230 188 249 228 179 227 181 122 227 181 122 230 172 123 +58 38 16 83 51 28 123 94 35 9 2 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 115 82 46 232 166 115 98 62 37 104 73 33 +229 163 112 231 165 115 231 165 115 231 165 115 230 163 113 249 228 179 +255 234 192 255 232 190 255 234 192 255 230 188 249 228 179 249 228 179 +235 224 165 249 228 179 255 230 188 236 217 150 230 172 123 236 217 150 +227 181 122 232 168 117 231 165 115 230 163 113 232 166 115 155 112 61 +58 38 16 219 162 97 225 161 106 9 2 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 40 20 7 190 135 80 236 169 118 178 137 80 22 13 4 +119 92 52 236 169 118 231 165 115 230 164 114 230 164 114 230 172 123 +236 217 150 249 228 179 236 217 150 227 181 122 230 172 123 230 163 113 +229 163 112 231 165 115 230 172 123 232 168 117 230 163 113 230 163 113 +230 163 113 230 164 114 230 164 114 232 166 115 155 112 61 22 13 4 +133 97 51 236 169 118 225 161 106 69 42 21 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +36 17 7 190 135 80 232 166 115 231 165 115 232 166 115 155 112 61 +58 38 16 219 162 97 232 168 117 230 164 114 231 165 115 229 163 112 +231 165 115 233 169 121 229 163 112 229 163 112 230 163 113 231 165 115 +231 165 115 230 164 114 230 163 113 230 164 114 231 165 115 231 165 115 +231 165 115 230 164 114 236 169 118 200 154 86 32 15 7 115 82 46 +230 163 113 231 165 115 232 166 115 200 154 86 58 38 16 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +166 125 65 236 169 118 231 165 115 230 164 114 232 166 115 230 164 114 +58 38 16 69 42 21 225 161 106 232 168 117 231 165 115 231 165 115 +230 164 114 230 163 113 230 164 114 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +230 164 114 232 166 115 225 161 106 104 73 33 89 60 38 232 166 115 +232 168 117 230 164 114 231 165 115 236 169 118 133 97 51 4 0 2 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 69 42 21 +225 161 106 232 168 117 230 164 114 231 165 115 230 164 114 232 166 115 +190 135 80 58 38 16 166 125 65 236 169 118 236 169 118 236 169 118 +236 169 118 236 169 118 236 169 118 236 169 118 232 168 117 236 169 118 +236 169 118 236 169 118 236 169 118 236 169 118 236 169 118 236 169 118 +236 169 118 225 161 106 115 82 46 22 13 4 168 130 70 236 169 118 +230 164 114 231 165 115 230 164 114 231 165 115 225 161 106 104 73 33 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 9 2 0 155 112 61 +236 169 118 230 164 114 231 165 115 231 165 115 231 165 115 231 165 115 +236 169 118 133 97 51 36 17 7 166 125 65 190 135 80 190 135 80 +190 135 80 190 135 80 190 135 80 190 135 80 225 161 106 190 135 80 +190 135 80 190 135 80 190 135 80 190 135 80 190 135 80 190 135 80 +190 135 80 104 73 33 32 15 7 166 125 65 232 166 115 230 164 114 +231 165 115 231 165 115 231 165 115 230 164 114 236 169 118 200 154 86 +22 13 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 69 42 21 225 161 106 +231 165 115 230 164 114 231 165 115 231 165 115 231 165 115 230 164 114 +232 166 115 225 161 106 98 62 37 46 29 24 132 119 61 132 119 61 +132 119 61 132 119 61 132 119 61 46 29 24 77 45 20 107 78 54 +132 119 61 132 119 61 132 119 61 132 119 61 132 119 61 132 119 61 +107 78 54 32 15 7 166 125 65 236 169 118 231 165 115 230 164 114 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 236 169 118 +115 82 46 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 81 56 37 236 169 118 +230 164 114 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +230 164 114 232 168 117 225 161 106 104 74 41 173 198 156 247 255 212 +247 255 212 247 255 212 237 255 203 199 209 176 172 197 155 232 255 199 +247 255 212 247 255 212 247 255 212 247 255 212 247 255 212 247 255 212 +119 92 52 166 125 65 232 166 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 230 164 114 236 169 118 +138 104 59 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 22 13 4 190 135 80 232 168 117 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 230 164 114 236 169 118 166 125 65 107 78 54 231 255 198 +231 255 198 231 255 198 231 255 198 235 255 203 237 255 203 232 255 198 +231 255 198 231 255 198 231 255 198 231 255 198 237 255 203 173 198 156 +86 63 36 232 166 115 231 165 115 230 164 114 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 232 168 117 +219 162 97 69 42 21 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 22 13 4 229 163 112 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 232 166 115 83 51 28 173 198 156 +235 255 203 231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 +231 255 198 231 255 198 231 255 198 232 255 198 235 255 203 107 78 54 +166 125 65 236 169 118 230 164 114 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 230 164 114 +236 169 118 80 54 33 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 20 10 4 225 161 106 232 166 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 230 164 114 232 168 117 190 135 80 91 67 37 +235 255 203 231 255 198 231 255 198 231 255 198 231 255 198 231 255 198 +231 255 198 231 255 198 231 255 198 237 255 203 172 197 155 98 62 37 +225 161 106 232 166 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +236 169 118 80 54 33 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 69 42 21 229 163 112 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 230 164 114 232 166 115 96 68 37 +172 197 155 237 255 203 231 255 198 231 255 198 231 255 198 231 255 198 +231 255 198 231 255 198 231 255 198 231 255 198 119 92 52 155 112 61 +236 169 118 230 164 114 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +236 169 118 80 54 33 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 168 130 70 236 169 118 230 164 114 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 236 169 118 166 125 65 +134 113 63 247 255 212 231 255 198 231 255 198 231 255 198 231 255 198 +231 255 198 231 255 198 231 255 198 230 232 196 73 53 28 232 166 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +236 169 118 73 53 28 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 178 137 80 236 169 118 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 236 169 118 190 135 80 +107 78 54 230 232 196 233 255 199 231 255 198 231 255 198 231 255 198 +231 255 198 231 255 198 235 255 203 172 197 155 104 74 41 236 169 118 +230 164 114 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +236 169 118 96 68 37 9 2 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 178 137 80 236 169 118 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 236 169 118 +104 73 33 172 197 155 237 255 203 231 255 198 231 255 198 231 255 198 +231 255 198 232 255 198 231 255 198 82 57 39 190 135 80 232 166 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +232 166 115 200 154 86 22 13 4 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 178 137 80 236 169 118 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 230 164 114 236 169 118 +190 135 80 82 57 39 231 255 198 231 255 198 231 255 198 231 255 198 +231 255 198 237 255 203 186 149 103 115 82 46 232 166 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 229 163 112 22 13 4 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 178 137 80 236 169 118 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 230 164 114 +236 169 118 104 74 41 186 149 103 237 255 203 231 255 198 231 255 198 +233 255 199 230 232 196 107 78 54 190 135 80 236 169 118 230 164 114 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +232 166 115 225 161 106 22 13 4 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 178 137 80 236 169 118 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 230 164 114 +232 166 115 200 154 86 82 57 39 231 255 198 233 255 199 232 255 199 +235 255 203 172 197 155 98 62 37 236 169 118 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 225 161 106 22 13 4 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 178 137 80 236 169 118 230 164 114 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 232 166 115 116 87 35 132 119 61 232 255 199 233 255 199 +210 220 166 73 53 28 190 135 80 233 170 120 230 164 114 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 225 161 106 22 13 4 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 83 51 28 230 163 113 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +230 164 114 236 169 118 155 112 61 73 53 28 132 119 61 134 113 63 +125 102 55 51 35 26 219 162 97 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 230 164 114 +236 169 118 133 97 51 9 2 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 20 10 4 225 161 106 232 166 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 232 168 117 219 162 97 69 42 21 4 0 2 9 2 0 +9 2 0 133 97 51 236 169 118 230 164 114 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 +231 165 115 231 165 115 231 165 115 231 165 115 231 165 115 232 168 117 +219 162 97 58 38 16 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 diff --git a/drivers/video/logo/logo_zen_clut224.ppm b/drivers/video/logo/logo_zen_clut224.ppm new file mode 100644 index 00000000000..f4c78972fe5 --- /dev/null +++ b/drivers/video/logo/logo_zen_clut224.ppm @@ -0,0 +1,2043 @@ +P3 +102 120 +255 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 1 1 0 1 1 0 2 3 0 2 3 1 5 6 +1 7 9 1 8 11 2 10 13 2 11 15 2 13 18 3 16 22 +3 18 24 3 21 29 4 23 31 5 25 34 5 28 38 6 30 41 +6 30 41 6 33 45 7 36 49 7 36 49 7 36 49 7 36 49 +7 36 49 7 38 51 7 38 51 7 36 49 7 36 49 7 36 49 +7 36 49 6 33 45 6 33 45 6 30 41 5 28 38 5 27 37 +5 25 34 4 22 30 4 20 27 3 16 22 3 15 20 2 13 18 +2 11 15 2 9 12 1 7 9 1 7 9 1 4 5 0 3 4 +0 2 3 0 1 1 0 1 1 0 1 1 0 0 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 +0 1 1 0 2 3 0 3 4 1 4 5 1 5 6 1 7 9 +2 9 12 2 11 15 2 12 16 3 16 22 3 18 24 3 21 29 +5 25 34 5 27 37 6 30 41 6 33 45 7 36 49 7 38 51 +6 40 54 8 41 55 8 42 57 8 44 59 8 45 61 8 45 61 +8 45 61 8 45 61 8 45 61 8 45 61 8 45 61 8 44 59 +8 42 57 8 42 57 8 41 55 7 38 51 7 36 49 6 33 45 +6 33 45 5 29 40 5 25 34 4 23 31 4 20 27 3 18 24 +3 15 20 2 13 18 1 10 14 1 8 11 1 7 9 1 5 6 +1 4 5 0 2 3 0 2 3 0 1 1 0 1 1 0 0 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 +0 2 3 0 3 4 1 4 5 1 5 6 1 7 9 2 9 12 +2 12 16 3 15 20 3 16 22 4 20 27 4 23 31 5 27 37 +6 30 41 6 33 45 7 36 49 7 39 53 8 42 57 8 45 61 +9 47 64 9 47 64 9 49 66 9 50 69 9 50 69 10 53 71 +10 53 71 10 53 71 10 53 71 10 53 71 10 53 71 9 50 69 +9 49 66 9 49 66 9 47 64 8 45 61 8 42 57 8 42 57 +7 39 53 7 36 49 6 33 45 5 28 38 5 25 34 4 23 31 +4 20 27 3 16 22 3 15 20 2 11 15 2 9 12 1 7 9 +1 5 6 0 3 4 0 3 4 0 2 3 0 1 1 0 1 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 1 1 +0 3 4 1 4 5 1 5 6 1 7 9 2 9 12 2 12 16 +3 15 20 3 18 24 3 21 29 5 25 34 6 30 41 6 33 45 +7 38 51 8 41 55 8 44 59 9 47 64 9 49 66 10 53 71 +10 53 71 10 54 74 11 56 77 11 58 79 11 58 79 11 58 79 +11 58 79 11 58 79 11 58 79 11 58 79 11 58 79 11 58 79 +11 56 77 11 56 77 10 54 74 10 53 71 9 50 69 9 49 66 +8 45 61 8 42 57 6 40 54 7 36 49 6 33 45 5 29 40 +5 25 34 3 21 29 3 18 24 3 15 20 2 12 16 2 10 13 +1 7 9 1 5 6 0 3 4 0 3 4 0 2 3 0 2 3 +0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 1 1 0 1 1 0 2 3 +0 3 4 1 5 6 1 7 9 1 8 11 2 12 16 3 15 20 +4 19 26 4 23 31 5 27 37 6 30 41 7 36 49 6 40 54 +8 44 59 9 47 64 9 50 69 10 53 71 11 56 77 11 58 79 +11 58 79 11 60 82 12 61 82 12 62 85 12 64 87 12 64 87 +12 64 87 12 64 87 12 64 87 12 64 87 12 64 87 12 64 87 +12 62 85 11 60 82 11 60 82 11 58 79 11 56 77 10 54 74 +10 53 71 9 49 66 8 45 61 8 42 57 7 39 53 7 36 49 +6 30 41 5 27 37 4 22 30 4 19 26 3 15 20 2 12 16 +2 10 13 1 7 9 1 5 6 0 3 4 0 2 3 0 2 3 +0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 1 0 1 1 0 2 3 0 2 3 +1 4 5 1 5 6 1 8 11 2 10 13 2 13 18 3 18 24 +4 22 30 5 27 37 6 30 41 7 36 49 8 41 55 8 45 61 +9 49 66 10 53 71 10 54 74 11 58 79 12 61 82 12 61 82 +12 64 87 12 64 87 12 66 90 12 66 90 13 67 91 13 67 91 +13 67 91 13 67 92 13 67 92 13 67 91 13 67 91 12 66 90 +12 66 90 12 64 87 12 64 87 12 64 87 11 60 82 11 58 79 +11 58 79 10 54 74 9 50 69 9 47 64 8 44 59 8 41 55 +7 36 49 6 30 41 5 27 37 4 23 31 4 19 26 3 15 20 +2 12 16 2 9 12 1 7 9 1 4 5 0 3 4 0 2 3 +0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 1 1 0 1 1 0 2 3 0 3 4 +1 5 6 1 7 9 2 9 12 2 12 16 3 16 22 3 21 29 +5 25 34 6 30 41 7 36 49 8 41 55 8 45 61 9 49 66 +10 54 74 11 58 79 11 60 82 12 62 85 12 64 87 12 66 90 +13 67 92 13 67 92 13 69 94 13 69 94 13 69 94 13 69 94 +13 69 94 13 71 96 13 71 96 13 69 94 13 69 94 13 69 94 +13 69 94 13 68 93 13 68 93 13 67 91 12 64 87 12 64 87 +12 62 85 11 58 79 11 56 77 10 53 71 9 50 69 8 45 61 +8 41 55 7 36 49 6 30 41 5 27 37 4 23 31 3 18 24 +3 15 20 2 11 15 1 8 11 1 7 9 1 5 6 0 3 4 +0 2 3 0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 1 0 1 1 0 1 1 0 2 3 1 4 5 +1 7 9 2 9 12 2 12 16 3 15 20 4 19 26 4 24 33 +6 30 41 7 36 49 8 41 55 8 45 61 9 50 69 10 54 74 +11 58 79 12 62 85 12 64 87 13 67 91 13 68 93 13 69 94 +13 69 94 13 71 96 13 72 97 13 72 98 14 73 99 14 73 99 +14 73 99 13 72 98 13 72 98 14 73 99 13 72 98 13 72 98 +13 72 98 13 72 97 13 71 96 13 69 94 13 69 94 13 67 91 +12 66 90 12 64 87 12 62 85 11 58 79 10 54 74 9 50 69 +9 47 64 8 41 55 7 36 49 6 33 45 5 27 37 4 23 31 +3 18 24 2 13 18 1 10 14 1 8 11 1 7 9 1 4 5 +0 2 3 0 2 3 0 1 1 0 0 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 1 0 1 1 0 2 3 0 3 4 1 4 5 +1 7 9 1 10 14 3 15 20 3 16 22 4 22 30 5 28 38 +6 33 45 8 41 55 8 45 61 9 50 69 10 54 74 11 58 79 +12 62 85 12 66 90 13 67 92 13 69 94 13 71 96 13 72 98 +14 73 99 14 73 99 14 73 99 14 74 101 14 74 101 14 74 101 +14 74 101 14 74 101 14 74 101 14 74 101 14 74 101 14 74 101 +14 73 100 14 73 99 13 72 98 13 72 98 13 72 97 13 71 96 +13 69 94 13 67 92 12 66 90 12 62 85 11 60 82 11 56 77 +10 53 71 9 47 64 8 41 55 7 36 49 6 33 45 5 27 37 +3 21 29 3 16 22 2 13 18 2 10 13 1 7 9 1 5 6 +0 3 4 0 2 3 0 1 1 0 1 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 1 1 0 1 1 0 2 3 1 4 5 1 5 6 +1 8 11 2 12 16 3 15 20 4 19 26 5 25 34 6 30 41 +7 36 49 8 42 57 9 47 64 10 53 71 11 58 79 12 62 85 +12 66 90 13 68 93 13 69 94 13 72 98 14 73 99 14 73 100 +14 73 100 14 74 101 14 74 101 14 74 101 14 74 101 14 74 101 +14 74 101 14 74 101 14 74 101 14 74 101 14 74 101 14 74 101 +14 74 101 14 74 101 14 74 101 14 74 101 14 73 99 14 73 99 +13 72 97 13 69 94 13 68 93 12 66 90 12 64 87 11 60 82 +11 56 77 9 50 69 9 47 64 8 41 55 7 36 49 6 30 41 +5 25 34 4 19 26 3 15 20 2 12 16 2 9 12 1 7 9 +1 4 5 0 2 3 0 2 3 0 1 1 0 0 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 1 1 0 1 1 0 3 4 1 4 5 1 7 9 +2 9 12 2 13 18 3 16 22 3 21 29 5 27 37 6 33 45 +7 39 53 9 47 64 9 50 69 11 56 77 11 60 82 12 64 87 +13 67 92 13 69 94 13 72 97 13 72 98 14 74 101 14 74 101 +14 74 101 14 74 101 14 74 101 14 75 102 14 75 102 14 75 102 +14 75 102 14 75 102 14 75 102 14 75 102 14 75 102 14 75 102 +14 75 102 14 74 101 14 74 101 14 75 102 14 74 101 14 73 99 +13 72 98 13 72 98 13 69 94 13 68 93 12 66 90 12 64 87 +11 58 79 10 54 74 9 49 66 8 44 59 6 40 54 6 33 45 +5 27 37 4 22 30 3 16 22 2 13 18 2 10 13 1 7 9 +1 5 6 0 3 4 0 2 3 0 1 1 0 0 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 2 3 0 2 3 0 2 3 1 5 6 1 7 9 +2 10 13 3 15 20 4 19 26 4 23 31 5 29 40 7 36 49 +8 42 57 9 49 66 10 53 71 11 58 79 12 62 85 12 66 90 +13 69 94 13 72 97 13 72 98 14 74 101 14 75 102 14 74 101 +14 75 102 14 75 102 14 75 102 14 75 102 14 75 102 14 74 101 +14 73 99 14 75 102 14 75 102 14 74 101 14 74 101 14 73 100 +14 73 100 14 75 102 14 75 102 14 74 101 14 74 101 14 74 101 +14 74 101 14 73 99 13 72 98 13 69 94 13 69 94 12 66 90 +12 62 85 11 58 79 10 53 71 9 47 64 8 42 57 7 36 49 +6 30 41 5 25 34 4 19 26 3 15 20 2 12 16 1 8 11 +1 5 6 1 4 5 0 2 3 0 1 1 0 1 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 1 0 2 3 0 2 3 0 3 4 1 5 6 1 8 11 +2 11 15 3 16 22 4 20 27 5 25 34 6 30 41 7 38 51 +8 45 61 9 50 69 11 56 77 11 60 82 12 64 87 13 68 93 +13 71 96 13 72 98 14 73 99 14 74 101 14 74 101 14 75 102 +14 75 102 14 75 102 14 74 101 14 75 102 13 72 98 12 64 87 +9 49 66 8 41 55 6 30 41 6 30 41 7 38 51 9 47 64 +11 58 79 13 71 96 14 75 102 14 74 101 14 75 102 14 74 101 +14 74 101 14 74 101 14 73 99 13 72 98 13 69 94 13 68 93 +12 64 87 11 60 82 11 56 77 9 50 69 9 47 64 8 41 55 +6 33 45 5 27 37 4 22 30 3 18 24 2 13 18 2 10 13 +1 7 9 1 5 6 0 3 4 0 2 3 0 2 3 0 0 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 2 3 0 2 3 1 4 5 1 7 9 2 9 12 +2 12 16 3 16 22 3 21 29 5 27 37 6 33 45 7 39 53 +9 47 64 10 53 71 11 56 77 12 62 85 12 66 90 13 69 94 +13 72 97 14 73 99 14 74 101 14 74 101 14 75 102 14 75 102 +14 74 101 14 74 101 12 64 87 5 29 40 0 3 4 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 4 24 33 11 60 82 14 75 102 14 74 101 +14 75 102 14 74 101 14 74 101 13 72 98 13 72 97 13 69 94 +13 68 93 12 64 87 11 58 79 10 54 74 9 49 66 8 44 59 +7 36 49 6 30 41 4 24 33 4 19 26 3 15 20 2 11 15 +1 8 11 1 5 6 0 3 4 0 2 3 0 2 3 0 0 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 1 1 0 2 3 1 4 5 1 7 9 2 9 12 +2 12 16 3 16 22 4 22 30 5 27 37 6 33 45 8 41 55 +9 47 64 10 54 74 11 58 79 12 62 85 13 67 91 13 69 94 +13 72 98 14 73 99 14 74 101 14 74 101 14 75 102 14 75 102 +11 58 79 3 18 24 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 3 16 22 11 56 77 +14 74 101 14 74 101 14 74 101 14 74 99 13 72 98 13 71 96 +13 68 93 12 66 90 11 60 82 11 56 77 10 53 71 8 45 61 +8 41 55 6 33 45 5 25 34 3 21 29 3 16 22 2 12 16 +1 8 11 1 7 9 1 4 5 0 3 4 0 1 1 0 1 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 1 1 0 3 4 1 4 5 1 7 9 2 9 12 +2 13 18 3 18 24 4 23 31 5 28 38 7 36 49 8 42 57 +9 49 66 10 54 74 11 60 82 12 64 87 13 67 91 13 69 94 +13 72 98 14 74 101 14 74 101 14 75 102 14 74 101 8 45 61 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 9 8 8 21 20 20 3 3 3 0 0 0 0 0 0 +6 33 45 14 74 101 14 74 101 14 74 101 14 73 99 13 72 98 +13 69 94 13 67 91 12 62 85 11 58 79 10 54 74 9 47 64 +8 41 55 6 33 45 5 28 38 4 23 31 4 19 26 2 13 18 +2 9 12 1 7 9 1 4 5 0 3 4 0 2 3 0 1 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 2 3 0 3 4 1 4 5 1 7 9 2 9 12 +2 13 18 4 19 26 4 23 31 5 28 38 7 36 49 8 42 57 +9 50 69 11 56 77 11 60 82 12 64 87 13 68 93 13 71 96 +14 73 99 14 74 101 14 74 101 14 74 101 9 47 64 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 29 26 26 81 83 82 55 54 51 21 20 20 0 0 0 +0 0 0 5 25 34 14 73 99 14 74 101 14 73 99 13 72 98 +13 69 94 13 68 93 12 64 87 11 60 82 11 56 77 9 50 69 +8 44 59 7 36 49 6 30 41 5 25 34 4 19 26 3 15 20 +2 10 13 1 7 9 1 5 6 0 3 4 0 2 3 0 1 1 +0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 2 3 0 3 4 1 4 5 1 7 9 2 9 12 +3 15 20 4 19 26 4 24 33 5 29 40 7 36 49 8 44 59 +9 50 69 11 56 77 11 60 82 12 64 87 13 68 93 13 71 96 +14 73 99 14 74 101 14 74 101 12 62 85 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 39 37 35 113 114 111 113 114 111 69 68 60 28 32 37 +3 3 3 0 0 0 5 27 37 14 74 101 14 74 101 14 73 99 +13 72 97 13 69 94 12 66 90 12 62 85 11 58 79 10 53 71 +8 45 61 7 38 51 6 30 41 5 25 34 3 21 29 3 15 20 +2 11 15 1 8 11 1 5 6 1 4 5 0 2 3 0 2 3 +0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 2 3 0 3 4 1 5 6 1 7 9 2 10 13 +3 15 20 4 19 26 4 24 33 6 30 41 7 36 49 8 44 59 +9 50 69 11 56 77 11 60 82 12 64 87 13 68 93 13 71 96 +14 73 99 14 74 101 14 74 101 2 13 18 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 1 47 44 41 113 114 111 81 83 82 55 54 51 39 37 35 +9 8 8 0 0 0 0 0 0 9 49 66 14 73 99 14 73 99 +13 72 98 13 69 94 12 66 90 12 62 85 11 58 79 10 53 71 +9 47 64 8 41 55 6 33 45 5 27 37 4 22 30 3 16 22 +2 12 16 1 8 11 1 7 9 1 4 5 0 2 3 0 2 3 +0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 2 3 0 2 3 1 4 5 1 7 9 1 10 14 +2 13 18 4 19 26 5 25 34 6 30 41 7 36 49 8 44 59 +9 50 69 11 56 77 11 60 82 12 64 87 13 69 94 13 72 97 +14 73 100 14 73 99 12 62 85 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 39 37 35 39 37 35 16 15 15 6 5 5 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 1 12 64 87 13 72 98 +13 72 98 13 69 94 13 67 91 12 64 87 11 58 79 10 54 74 +9 47 64 8 41 55 6 33 45 5 28 38 4 23 31 3 16 22 +2 12 16 2 9 12 1 7 9 1 4 5 0 2 3 0 2 3 +0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 2 3 0 2 3 1 4 5 1 7 9 2 10 13 +3 15 20 4 19 26 5 25 34 6 30 41 7 36 49 8 44 59 +9 50 69 11 56 77 11 60 82 12 64 87 13 69 94 13 72 97 +14 73 99 14 73 99 8 41 55 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +1 1 1 7 7 7 0 0 1 0 0 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 4 20 27 14 73 99 +13 72 98 13 69 94 13 67 91 12 64 87 11 60 82 10 54 74 +9 49 66 8 42 57 7 36 49 5 29 40 4 23 31 3 18 24 +2 12 16 2 9 12 1 7 9 1 4 5 0 3 4 0 1 1 +0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 2 3 0 3 4 1 4 5 1 7 9 1 10 14 +3 15 20 4 19 26 5 25 34 6 30 41 7 36 49 8 44 59 +9 50 69 11 56 77 11 60 82 12 64 87 13 69 94 13 72 97 +13 73 99 14 73 99 3 16 22 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13 68 93 +13 72 97 13 69 94 13 68 93 12 64 87 11 60 82 10 54 74 +9 49 66 8 42 57 7 36 49 6 30 41 4 24 33 3 18 24 +2 12 16 2 9 12 1 7 9 1 4 5 0 3 4 0 1 1 +0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 2 3 0 3 4 1 4 5 1 7 9 1 10 14 +2 13 18 4 19 26 5 25 34 6 30 41 7 36 49 8 44 59 +9 50 69 11 56 77 11 60 82 12 64 87 13 68 93 13 72 97 +14 73 99 12 66 90 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 42 57 +13 72 98 13 71 96 13 68 93 12 64 87 11 60 82 11 56 77 +9 50 69 8 42 57 7 36 49 6 30 41 4 24 33 4 19 26 +2 13 18 2 9 12 1 7 9 1 5 6 0 3 4 0 1 1 +0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 2 3 0 2 3 1 4 5 1 7 9 2 10 13 +2 13 18 4 19 26 4 24 33 5 29 40 7 36 49 8 44 59 +9 50 69 11 56 77 11 60 82 12 64 87 13 68 93 13 71 96 +13 72 97 11 58 79 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 11 15 +13 72 98 13 71 96 13 68 93 12 64 87 11 60 82 11 56 77 +9 50 69 8 44 59 7 36 49 6 30 41 5 25 34 4 19 26 +3 15 20 2 10 13 1 7 9 1 5 6 0 3 4 0 1 1 +0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 1 1 0 3 4 1 4 5 1 7 9 2 9 12 +2 13 18 4 19 26 4 24 33 5 29 40 7 36 49 8 44 59 +9 50 69 11 56 77 11 60 82 12 64 87 13 68 93 13 71 96 +13 71 96 9 50 69 0 0 0 0 0 0 0 0 0 0 0 0 +12 12 11 29 26 26 29 26 26 2 2 2 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 16 15 15 55 54 51 69 68 60 21 20 20 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +13 68 93 13 69 94 13 68 93 12 64 87 12 62 85 11 56 77 +9 50 69 8 44 59 7 36 49 6 30 41 5 25 34 4 19 26 +2 13 18 2 10 13 1 7 9 1 5 6 0 3 4 0 1 1 +0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 1 1 0 3 4 1 4 5 1 7 9 2 9 12 +2 13 18 4 19 26 4 23 31 5 28 38 7 36 49 8 42 57 +9 50 69 11 56 77 11 60 82 12 64 87 13 68 93 13 72 97 +13 72 97 8 45 61 0 0 0 0 0 0 0 0 0 0 0 0 +9 8 8 39 37 35 81 83 82 69 68 60 7 7 7 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 3 3 3 16 15 15 69 68 60 105 98 84 29 26 26 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +11 60 82 13 69 94 13 69 94 12 64 87 12 61 82 11 58 79 +9 50 69 8 44 59 7 38 51 6 33 45 5 25 34 4 19 26 +2 13 18 2 10 13 1 7 9 1 5 6 0 3 4 0 1 1 +0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 1 1 0 3 4 1 4 5 1 7 9 2 9 12 +2 13 18 3 18 24 4 23 31 5 28 38 7 36 49 8 42 57 +9 50 69 10 54 74 11 60 82 12 64 87 13 68 93 13 71 96 +13 72 97 8 42 57 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 1 4 5 47 44 41 39 37 35 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 1 0 2 3 28 32 37 55 54 51 +9 8 8 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +9 47 64 13 69 94 13 69 94 12 66 90 12 62 85 11 58 79 +10 53 71 8 45 61 7 38 51 6 33 45 5 27 37 4 20 27 +3 15 20 1 10 14 1 7 9 1 5 6 0 3 4 0 2 3 +0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 1 1 0 3 4 1 4 5 1 7 9 2 9 12 +2 13 18 3 18 24 4 23 31 5 28 38 7 36 49 8 42 57 +9 49 66 10 54 74 11 60 82 12 64 87 13 67 92 13 69 94 +13 72 97 8 41 55 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 1 1 4 5 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 +4 4 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +6 30 41 13 72 97 13 69 94 12 66 90 12 64 87 11 58 79 +10 53 71 9 47 64 7 39 53 6 33 45 5 27 37 3 21 29 +3 16 22 2 11 15 1 8 11 1 7 9 1 4 5 0 2 3 +0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 2 3 0 2 3 1 4 5 1 7 9 2 9 12 +2 12 16 3 16 22 4 23 31 5 28 38 7 36 49 8 42 57 +9 49 66 10 54 74 11 58 79 12 64 87 13 67 91 13 69 94 +13 72 97 8 42 57 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +3 16 22 13 72 97 13 69 94 12 66 90 12 64 87 11 58 79 +10 53 71 9 47 64 8 41 55 7 36 49 5 29 40 4 22 30 +3 16 22 2 12 16 1 8 11 1 7 9 1 5 6 0 2 3 +0 2 3 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 1 0 1 1 0 2 3 0 3 4 1 7 9 1 9 12 +2 12 16 3 16 22 4 22 30 5 27 37 6 33 45 8 42 57 +9 47 64 10 54 74 11 58 79 12 64 87 13 67 91 13 69 94 +13 72 97 8 42 57 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +3 16 22 13 72 97 13 69 94 13 68 93 12 64 87 11 60 82 +10 54 74 9 49 66 8 42 57 7 36 49 6 30 41 4 23 31 +4 19 26 2 13 18 2 10 13 1 7 9 1 5 6 0 3 4 +0 2 3 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 2 3 0 2 3 1 4 5 1 7 9 1 8 11 +2 11 15 3 16 22 3 21 29 5 27 37 6 33 45 8 41 55 +9 47 64 10 54 74 11 58 79 12 62 85 13 67 91 13 69 94 +13 71 96 8 44 59 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 4 4 4 4 4 4 0 0 0 0 0 0 9 8 8 +21 20 20 6 5 5 0 0 0 0 0 0 29 26 26 7 7 7 +0 0 0 0 0 0 12 12 11 1 1 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +3 21 29 13 72 97 13 71 96 13 68 93 12 66 90 11 60 82 +11 56 77 9 49 66 8 44 59 7 38 51 6 30 41 5 25 34 +4 19 26 2 13 18 1 10 14 1 8 11 1 5 6 0 3 4 +0 2 3 0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 1 0 2 3 0 2 3 1 4 5 1 5 6 1 8 11 +2 12 16 3 16 22 3 21 29 5 25 34 6 33 45 8 41 55 +9 47 64 10 54 74 11 58 79 12 62 85 13 67 91 13 69 94 +13 69 94 8 45 61 0 0 0 9 8 8 148 147 146 39 37 35 +0 0 0 29 26 26 81 83 82 81 83 82 0 0 0 11 13 22 +69 68 60 28 32 37 7 7 7 148 147 146 201 196 193 39 37 35 +0 0 0 0 0 1 69 68 60 105 98 84 47 44 41 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +6 30 41 14 73 99 13 71 96 13 68 93 12 66 90 12 61 82 +11 56 77 9 50 69 8 45 61 6 40 54 6 33 45 5 27 37 +4 20 27 3 16 22 2 11 15 1 8 11 1 7 9 1 4 5 +0 2 3 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 1 0 2 3 0 2 3 1 4 5 1 5 6 1 8 11 +2 12 16 3 16 22 3 21 29 5 25 34 6 33 45 7 39 53 +9 47 64 10 53 71 11 58 79 12 62 85 13 67 91 13 69 94 +13 69 94 9 49 66 0 0 0 81 83 82 251 251 251 171 169 168 +0 2 3 0 0 0 113 114 111 241 241 241 47 44 41 35 25 1 +35 25 1 35 25 1 148 147 146 248 247 247 250 252 255 113 114 111 +7 7 7 3 3 3 69 68 60 224 226 233 224 223 222 55 54 51 +0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +7 36 49 13 72 98 13 72 97 13 69 94 13 67 91 12 64 87 +11 58 79 10 53 71 9 47 64 8 42 57 7 36 49 5 28 38 +4 23 31 3 16 22 2 12 16 1 10 14 1 7 9 1 5 6 +0 3 4 0 2 3 0 1 1 0 0 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 2 3 0 2 3 1 4 5 1 5 6 1 8 11 +2 11 15 3 16 22 4 20 27 5 25 34 6 33 45 7 39 53 +9 47 64 10 53 71 11 58 79 12 62 85 12 66 90 13 69 94 +13 69 94 11 58 79 0 0 0 81 83 82 255 255 255 255 255 255 +191 183 178 171 169 168 201 196 193 235 193 64 234 181 0 234 181 0 +234 181 0 222 168 1 225 176 47 245 217 114 247 240 225 255 255 255 +213 210 208 208 204 201 241 241 241 255 255 255 255 255 255 191 183 178 +0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +5 27 37 14 73 99 13 72 98 13 69 94 13 68 93 12 64 87 +11 60 82 10 54 74 9 49 66 8 44 59 7 38 51 6 30 41 +5 25 34 4 19 26 3 15 20 2 11 15 1 8 11 1 5 6 +1 4 5 0 2 3 0 1 1 0 1 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 1 0 2 3 0 2 3 0 3 4 1 5 6 1 8 11 +2 11 15 3 16 22 4 20 27 5 25 34 6 33 45 7 39 53 +9 47 64 10 53 71 11 58 79 12 62 85 12 66 90 13 69 94 +13 71 96 11 60 82 0 0 1 47 44 41 250 249 249 255 255 255 +252 254 255 225 202 147 209 152 1 194 135 4 249 197 0 255 210 1 +255 206 13 209 152 1 209 152 1 249 197 0 254 207 32 225 202 147 +247 240 225 250 252 255 252 254 255 255 255 255 252 254 255 191 183 178 +1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +3 15 20 14 74 101 13 72 98 13 71 96 13 69 94 12 66 90 +12 61 82 11 58 79 9 50 69 9 47 64 8 41 55 6 33 45 +5 27 37 3 21 29 3 16 22 2 13 18 2 9 12 1 7 9 +1 5 6 0 3 4 0 2 3 0 1 1 0 0 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 2 3 0 2 3 0 3 4 1 5 6 1 8 11 +2 11 15 3 16 22 3 21 29 5 25 34 6 33 45 7 39 53 +9 47 64 10 53 71 11 58 79 12 62 85 12 66 90 13 69 94 +13 72 98 12 62 85 0 0 0 0 2 3 201 196 193 254 251 250 +176 158 88 209 152 1 249 197 0 243 191 0 255 205 1 254 207 32 +255 209 45 255 205 1 249 197 0 255 205 1 255 205 1 249 197 0 +243 191 0 235 193 64 225 202 147 245 245 244 242 244 252 81 83 82 +0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +1 5 6 13 72 98 14 73 99 13 72 97 13 69 94 13 67 92 +12 62 85 11 58 79 10 53 71 9 49 66 8 42 57 7 36 49 +6 30 41 4 23 31 4 19 26 3 15 20 1 10 14 1 8 11 +1 5 6 0 3 4 0 2 3 0 1 1 0 1 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 1 0 1 1 0 2 3 1 4 5 1 5 6 1 8 11 +2 12 16 3 16 22 3 21 29 5 25 34 6 33 45 7 39 53 +9 47 64 10 53 71 11 58 79 12 62 85 12 66 90 13 69 94 +13 73 99 12 66 90 1 1 1 0 0 0 55 54 51 199 145 62 +222 168 1 255 205 1 255 205 1 255 205 1 255 205 1 255 209 45 +255 208 38 255 205 1 255 205 1 255 205 1 255 205 1 255 206 13 +255 206 22 255 205 1 249 198 10 255 208 38 167 119 72 1 5 6 +1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 13 69 94 13 72 98 13 72 98 13 71 96 13 68 93 +12 64 87 11 60 82 11 56 77 9 50 69 8 45 61 7 39 53 +6 33 45 5 27 37 3 21 29 3 16 22 2 13 18 2 10 13 +1 7 9 1 4 5 0 3 4 0 2 3 0 1 1 0 1 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 1 0 2 3 0 3 4 0 3 4 1 7 9 1 8 11 +2 12 16 3 16 22 4 22 30 5 27 37 6 33 45 8 41 55 +9 47 64 10 53 71 11 58 79 12 62 85 13 67 91 13 69 94 +13 72 97 13 72 98 1 8 11 11 5 1 154 101 6 222 168 1 +255 205 1 255 205 1 255 205 1 255 205 1 255 206 13 255 209 45 +255 206 13 255 205 1 255 205 1 255 205 1 255 208 38 255 209 52 +255 209 49 255 206 22 255 205 1 255 210 1 243 191 0 109 74 3 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 11 58 79 13 72 98 13 72 98 13 72 97 13 69 94 +13 67 91 12 62 85 11 58 79 10 54 74 9 49 66 8 42 57 +7 36 49 6 30 41 4 24 33 4 20 27 3 15 20 2 11 15 +1 8 11 1 7 9 1 4 5 0 2 3 0 2 3 0 1 1 +0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 +0 1 1 0 2 3 0 2 3 1 5 6 1 7 9 2 9 12 +2 13 18 4 19 26 4 23 31 5 29 40 7 36 49 8 42 57 +9 49 66 10 54 74 11 58 79 12 64 87 13 67 91 13 69 94 +13 72 97 14 73 100 0 8 19 72 47 3 209 152 1 255 205 1 +255 205 1 255 205 1 255 205 1 255 205 1 255 206 22 255 206 22 +255 205 1 255 205 1 255 205 1 254 207 32 255 209 55 255 209 49 +255 206 22 255 205 1 255 205 1 255 210 1 241 197 0 154 101 6 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 7 36 49 14 73 100 14 73 99 14 73 99 13 71 96 +13 68 93 12 64 87 11 60 82 11 56 77 10 53 71 9 47 64 +7 39 53 6 33 45 5 28 38 4 23 31 3 18 24 3 15 20 +2 10 13 1 7 9 1 7 9 0 3 4 0 2 3 0 1 1 +0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 +0 1 1 0 3 4 1 4 5 1 5 6 1 8 11 2 11 15 +3 15 20 4 20 27 5 25 34 6 30 41 7 36 49 8 44 59 +9 50 69 10 54 74 11 60 82 12 64 87 13 68 93 13 71 96 +13 72 98 13 72 98 0 14 27 109 74 3 234 181 0 255 205 1 +255 205 1 255 205 1 255 205 1 255 205 1 255 206 13 255 205 1 +255 205 1 255 205 1 254 207 32 255 209 55 255 208 38 255 206 13 +255 205 1 255 210 1 243 191 0 222 168 1 234 181 0 109 74 3 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 2 9 12 14 73 100 14 74 101 14 73 99 13 72 98 +13 69 94 13 67 91 12 62 85 11 58 79 10 54 74 9 49 66 +8 42 57 7 36 49 6 30 41 5 25 34 3 21 29 3 16 22 +2 12 16 2 9 12 1 7 9 1 5 6 0 3 4 0 3 4 +0 1 1 0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 1 1 +0 2 3 0 2 3 1 5 6 1 7 9 2 9 12 2 12 16 +3 16 22 4 22 30 5 27 37 6 33 45 7 38 51 8 45 61 +9 50 69 11 56 77 11 60 82 12 64 87 13 68 93 13 71 96 +13 72 98 14 73 99 4 24 33 72 47 3 209 152 1 255 205 1 +255 205 1 255 205 1 255 205 1 255 205 1 255 205 1 255 205 1 +255 205 1 255 206 22 255 209 49 254 207 32 255 210 1 249 197 0 +243 191 0 222 168 1 209 152 1 234 181 0 209 152 1 22 11 1 +0 0 0 0 0 0 12 12 11 47 44 41 12 12 11 0 0 0 +0 0 0 0 0 0 13 69 94 14 73 99 14 74 101 13 72 98 +13 71 96 13 67 91 12 64 87 12 61 82 11 58 79 10 53 71 +8 45 61 8 41 55 6 33 45 5 29 40 4 24 33 4 19 26 +3 15 20 2 11 15 1 8 11 1 7 9 1 5 6 0 3 4 +0 2 3 0 1 1 0 1 1 0 0 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 1 0 1 1 0 1 1 0 2 3 +0 3 4 1 4 5 1 7 9 1 8 11 2 11 15 3 15 20 +4 19 26 5 25 34 6 30 41 7 36 49 8 41 55 9 47 64 +10 53 71 11 58 79 12 64 87 12 66 90 13 69 94 13 72 97 +13 72 98 14 73 99 6 33 45 5 1 0 154 101 6 209 152 1 +243 191 0 255 205 1 255 210 1 255 205 1 255 205 1 255 205 1 +255 205 1 255 206 13 255 206 13 243 191 0 222 168 1 222 168 1 +234 181 0 241 197 0 255 205 1 234 181 0 139 105 59 16 15 15 +0 0 0 0 0 0 16 15 15 113 114 111 105 98 84 55 54 51 +9 8 8 0 0 0 9 49 66 14 73 99 14 74 101 13 72 98 +13 72 97 13 69 94 13 67 91 12 64 87 11 60 82 10 54 74 +9 49 66 8 44 59 7 38 51 6 33 45 5 27 37 4 22 30 +3 18 24 3 15 20 2 11 15 1 8 11 1 7 9 1 4 5 +0 3 4 0 2 3 0 1 1 0 1 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 1 1 0 1 1 0 2 3 0 3 4 +1 4 5 1 7 9 1 8 11 1 10 14 2 13 18 3 18 24 +4 22 30 5 28 38 6 33 45 7 38 51 8 45 61 9 50 69 +11 56 77 11 60 82 12 64 87 13 67 91 13 69 94 13 72 98 +14 73 99 13 74 101 6 40 54 4 0 5 105 98 84 174 129 27 +183 122 1 222 168 1 234 181 0 234 181 0 243 191 0 243 191 0 +234 181 0 222 168 1 209 152 1 222 168 1 241 197 0 255 205 1 +255 205 1 222 168 1 202 153 21 176 158 88 171 169 168 81 83 82 +0 0 0 0 0 0 0 2 3 69 68 60 113 114 111 113 114 111 +69 68 60 2 2 2 1 10 14 14 74 101 14 74 101 14 74 99 +14 73 99 13 71 96 13 69 94 12 66 90 12 64 87 11 58 79 +10 53 71 9 47 64 8 42 57 7 38 51 6 33 45 5 25 34 +3 21 29 3 16 22 2 13 18 1 10 14 1 8 11 1 5 6 +0 3 4 0 2 3 0 2 3 0 1 1 0 1 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 1 1 0 1 1 0 2 3 0 3 4 1 4 5 +1 5 6 1 8 11 1 10 14 2 13 18 3 16 22 3 21 29 +5 25 34 6 33 45 7 38 51 8 41 55 9 47 64 10 53 71 +11 58 79 12 64 87 12 66 90 13 69 94 13 72 97 13 72 98 +14 73 99 14 74 101 7 38 51 0 0 0 148 147 146 148 147 146 +154 101 6 194 135 4 209 152 1 209 152 1 209 152 1 209 152 1 +209 152 1 234 181 0 241 197 0 255 210 1 249 197 0 222 168 1 +202 153 21 176 158 88 208 204 201 224 226 233 213 210 208 148 147 146 +9 8 8 0 0 0 0 0 0 17 25 27 81 83 82 113 114 111 +113 114 111 12 12 11 0 0 0 11 56 77 14 73 100 14 74 101 +14 73 99 13 72 98 13 69 94 13 68 93 12 66 90 12 62 85 +11 58 79 10 53 71 9 47 64 8 42 57 7 36 49 6 30 41 +5 25 34 4 20 27 3 16 22 2 13 18 1 10 14 1 7 9 +1 5 6 0 3 4 0 3 4 0 2 3 0 1 1 0 1 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 1 1 0 2 3 0 3 4 0 3 4 1 5 6 +1 7 9 1 10 14 2 13 18 3 16 22 4 20 27 5 25 34 +6 30 41 7 36 49 8 41 55 9 47 64 9 50 69 11 56 77 +11 60 82 12 64 87 13 67 91 13 69 94 13 72 98 14 73 99 +14 74 101 14 74 101 3 16 22 5 1 0 148 147 146 191 183 178 +148 147 146 139 105 59 194 135 4 243 191 0 255 210 1 255 210 1 +255 210 1 255 205 1 243 191 0 222 168 1 194 135 4 176 158 88 +201 196 193 224 226 233 242 244 252 242 244 252 248 247 247 224 223 222 +69 68 60 0 0 0 0 0 0 0 0 0 12 12 11 69 68 60 +47 44 41 0 0 1 0 0 0 0 3 4 13 72 97 14 74 101 +14 74 101 14 73 99 13 72 97 13 69 94 13 67 92 12 64 87 +11 60 82 11 56 77 9 50 69 9 47 64 8 41 55 7 36 49 +6 30 41 5 25 34 4 20 27 3 16 22 2 13 18 2 10 13 +1 7 9 1 5 6 1 4 5 0 2 3 0 2 3 0 1 1 +0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 +0 1 1 0 2 3 0 2 3 0 3 4 1 5 6 1 7 9 +2 9 12 2 12 16 3 15 20 4 19 26 4 23 31 5 28 38 +6 33 45 6 40 54 8 44 59 9 49 66 10 54 74 11 58 79 +12 64 87 13 67 91 13 69 94 13 71 96 14 73 99 14 73 99 +14 73 100 12 62 85 0 0 0 2 2 2 148 147 146 213 210 208 +171 169 168 148 147 146 139 105 59 194 135 4 209 152 1 222 168 1 +222 168 1 209 152 1 194 135 4 174 129 27 171 169 168 213 210 208 +224 226 233 250 252 255 255 255 255 255 255 255 254 254 254 252 254 255 +148 147 146 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 +0 0 1 0 0 0 0 0 0 0 0 0 9 47 64 14 73 99 +14 74 101 14 73 99 13 72 98 13 72 97 13 69 94 12 66 90 +12 64 87 11 58 79 10 54 74 9 50 69 8 45 61 7 39 53 +6 33 45 5 28 38 4 24 33 4 19 26 3 15 20 2 12 16 +1 9 12 1 7 9 1 4 5 0 3 4 0 2 3 0 1 1 +0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 +0 1 1 0 2 3 1 4 5 1 5 6 1 7 9 2 9 12 +2 12 16 3 15 20 4 19 26 4 23 31 5 27 37 6 33 45 +7 38 51 8 44 59 9 49 66 10 53 71 11 58 79 12 62 85 +12 66 90 13 69 94 13 71 96 13 72 98 14 73 99 14 74 101 +14 73 100 4 24 33 0 0 0 0 0 1 171 169 168 242 244 252 +208 204 201 171 169 168 148 147 146 139 105 59 139 105 59 139 105 59 +167 119 72 167 119 72 148 147 146 191 183 178 218 217 217 241 241 241 +254 254 254 255 255 255 255 255 255 255 255 255 255 255 255 254 254 254 +237 237 236 55 54 51 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 1 5 6 14 72 97 +14 73 100 14 74 101 14 73 99 13 72 98 13 71 96 13 68 93 +12 66 90 12 62 85 11 58 79 10 54 74 9 49 66 8 44 59 +7 38 51 6 33 45 5 28 38 4 23 31 4 19 26 3 15 20 +2 11 15 2 9 12 1 7 9 1 5 6 0 3 4 0 2 3 +0 1 1 0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 1 1 +0 2 3 0 3 4 1 5 6 1 7 9 1 8 11 2 12 16 +3 15 20 4 19 26 4 23 31 5 28 38 6 33 45 7 38 51 +8 44 59 9 49 66 10 54 74 11 58 79 12 62 85 12 64 87 +13 68 93 13 69 94 13 72 98 14 73 99 14 74 101 14 73 99 +11 60 82 0 0 0 0 0 0 16 15 15 218 217 217 252 254 255 +241 241 241 208 204 201 171 169 168 148 147 146 148 147 146 148 147 146 +148 147 146 171 169 168 201 196 193 218 217 217 245 245 244 254 254 254 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +252 254 255 171 169 168 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 33 45 +14 74 101 14 74 101 14 74 101 13 72 98 13 72 98 13 69 94 +13 68 93 12 64 87 12 62 85 11 58 79 10 53 71 9 47 64 +8 42 57 7 38 51 6 33 45 5 27 37 4 23 31 3 18 24 +3 15 20 2 12 16 2 9 12 1 7 9 1 4 5 0 3 4 +0 2 3 0 1 1 0 1 1 0 0 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 1 0 1 1 0 1 1 0 2 3 +0 3 4 1 5 6 1 7 9 2 9 12 2 11 15 3 15 20 +3 18 24 4 23 31 5 28 38 6 33 45 7 38 51 8 42 57 +9 47 64 10 53 71 11 58 79 11 60 82 12 64 87 13 67 92 +13 69 94 13 72 97 13 72 98 14 74 101 14 74 101 14 72 97 +1 7 9 0 0 0 0 0 0 113 114 111 255 255 255 255 255 255 +255 255 255 237 237 236 201 196 193 171 169 168 171 169 168 171 169 168 +201 196 193 208 204 201 224 223 222 250 249 249 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 248 247 247 69 68 60 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +11 58 79 14 73 99 14 74 101 14 74 101 14 73 99 13 72 98 +13 69 94 13 67 92 12 64 87 12 61 82 11 58 79 10 53 71 +9 47 64 8 42 57 7 38 51 6 33 45 5 27 37 4 22 30 +3 18 24 3 15 20 2 12 16 1 8 11 1 7 9 1 4 5 +0 3 4 0 2 3 0 1 1 0 1 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 1 1 0 2 3 0 2 3 0 3 4 +1 4 5 1 7 9 1 8 11 2 12 16 3 15 20 3 18 24 +4 23 31 5 27 37 6 33 45 7 38 51 8 42 57 9 47 64 +10 53 71 11 58 79 11 60 82 12 64 87 13 67 91 13 69 94 +13 72 97 13 72 98 14 74 101 14 74 101 14 73 100 4 23 31 +0 0 0 0 0 0 55 54 51 241 241 241 255 255 255 255 255 255 +255 255 255 252 254 255 232 232 232 208 204 201 208 204 201 208 204 201 +218 217 217 232 232 232 250 251 253 252 254 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 252 254 255 148 147 146 0 0 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +1 7 9 13 72 98 14 74 101 14 75 102 14 74 101 13 72 98 +13 72 97 13 69 94 13 67 91 12 64 87 11 60 82 11 58 79 +10 53 71 9 47 64 8 42 57 7 38 51 6 33 45 5 27 37 +3 21 29 3 18 24 3 15 20 2 11 15 1 8 11 1 7 9 +1 4 5 0 3 4 0 2 3 0 1 1 0 1 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 1 0 1 1 0 2 3 0 3 4 0 3 4 +1 5 6 1 8 11 1 10 14 3 15 20 3 16 22 3 21 29 +5 25 34 6 30 41 7 36 49 8 42 57 9 47 64 10 53 71 +11 56 77 11 60 82 12 64 87 12 66 90 13 69 94 13 72 97 +13 72 98 14 73 99 14 74 101 14 73 99 10 53 71 0 0 0 +0 0 0 6 5 5 171 169 168 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 250 251 253 224 226 233 218 217 217 224 226 233 +241 241 241 250 251 253 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 218 217 217 12 12 11 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 7 39 53 14 73 100 14 74 101 14 74 101 14 73 99 +13 72 98 13 71 96 13 69 94 13 67 91 12 64 87 11 60 82 +11 56 77 9 50 69 9 47 64 8 41 55 7 36 49 6 30 41 +5 25 34 3 21 29 3 18 24 2 13 18 2 10 13 1 8 11 +1 5 6 0 3 4 0 2 3 0 2 3 0 1 1 0 0 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 1 0 1 1 0 1 1 0 3 4 0 3 4 1 5 6 +1 7 9 2 10 13 2 13 18 3 16 22 4 20 27 5 25 34 +6 30 41 7 36 49 8 41 55 9 47 64 9 50 69 11 56 77 +11 60 82 12 64 87 13 67 91 13 69 94 13 71 96 13 72 98 +14 73 99 14 74 101 14 74 101 13 69 94 0 3 4 0 0 0 +0 0 0 113 114 111 251 251 251 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 251 251 251 250 249 249 251 251 251 +252 254 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 250 252 255 69 68 60 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 12 64 87 14 73 99 14 74 101 14 74 101 +14 73 99 13 72 98 13 71 96 13 69 94 12 66 90 12 64 87 +11 58 79 10 54 74 9 50 69 8 45 61 8 41 55 6 33 45 +5 29 40 5 25 34 3 21 29 3 16 22 2 12 16 2 9 12 +1 7 9 1 5 6 0 3 4 0 2 3 0 1 1 0 1 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 1 1 0 2 3 0 3 4 1 5 6 1 7 9 +2 9 12 2 12 16 3 16 22 4 20 27 4 24 33 5 29 40 +7 36 49 8 41 55 9 47 64 9 50 69 10 54 74 11 60 82 +12 64 87 13 67 91 13 69 94 13 71 96 13 72 98 14 74 99 +14 74 101 14 73 100 14 73 99 3 15 20 0 0 0 0 0 0 +39 37 35 224 223 222 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 148 147 146 0 0 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 2 9 12 13 69 94 14 74 101 14 74 101 +14 74 101 14 73 99 13 72 98 13 71 96 13 69 94 12 66 90 +12 64 87 11 58 79 10 54 74 9 50 69 8 45 61 7 39 53 +6 33 45 5 29 40 5 25 34 4 19 26 3 15 20 2 12 16 +2 9 12 1 7 9 1 5 6 0 3 4 0 2 3 0 1 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 +0 1 1 0 2 3 0 3 4 1 4 5 1 7 9 1 9 12 +2 11 15 3 15 20 4 19 26 5 25 34 5 28 38 6 33 45 +6 40 54 8 45 61 9 50 69 10 54 74 11 58 79 12 64 87 +12 66 90 13 69 94 13 71 96 13 72 98 14 73 99 14 74 101 +14 74 101 14 74 101 4 23 31 0 0 0 0 0 0 0 0 0 +113 114 111 252 254 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 224 223 222 21 20 20 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 1 10 14 14 74 101 14 75 102 +14 74 101 14 74 101 14 73 99 13 72 98 13 71 96 13 69 94 +12 66 90 12 62 85 11 60 82 10 54 74 9 50 69 8 45 61 +7 39 53 7 36 49 5 29 40 4 23 31 4 19 26 3 15 20 +2 12 16 2 9 12 1 7 9 1 4 5 0 3 4 0 1 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 +0 1 1 0 2 3 0 3 4 1 7 9 1 7 9 2 10 13 +3 15 20 3 18 24 4 23 31 5 28 38 6 33 45 7 38 51 +8 44 59 9 49 66 10 54 74 11 58 79 12 62 85 12 66 90 +13 69 94 13 71 96 13 72 98 13 72 98 14 74 101 14 74 101 +14 73 100 7 39 53 0 0 0 0 0 0 0 0 0 16 15 15 +148 147 146 253 253 253 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 253 253 253 +248 247 247 248 247 247 254 254 254 251 251 251 148 147 146 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 6 33 45 14 75 102 +14 75 102 14 74 101 14 74 101 14 73 99 13 72 98 13 69 94 +13 68 93 12 66 90 12 64 87 11 58 79 10 54 74 9 49 66 +8 44 59 7 38 51 6 33 45 5 28 38 4 23 31 3 18 24 +3 15 20 2 11 15 1 8 11 1 7 9 1 4 5 0 2 3 +0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 1 +0 2 3 0 3 4 1 5 6 1 7 9 2 9 12 2 12 16 +3 16 22 4 20 27 5 25 34 6 30 41 7 36 49 8 41 55 +9 47 64 10 53 71 11 58 79 11 60 82 12 64 87 13 68 93 +13 69 94 13 72 97 14 73 99 14 74 101 14 74 101 14 74 101 +13 69 94 0 0 0 0 0 0 0 0 0 0 0 0 39 37 35 +171 169 168 232 232 232 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 248 247 247 253 253 253 254 254 254 250 249 249 +251 251 251 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 253 253 253 245 245 244 232 232 232 224 223 222 218 217 217 +208 204 201 208 204 201 224 223 222 255 255 255 218 217 217 7 7 7 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12 66 90 +14 74 101 14 74 101 14 74 101 14 74 101 14 73 99 13 72 97 +13 69 94 13 67 91 12 64 87 12 62 85 11 58 79 10 53 71 +9 47 64 8 42 57 7 36 49 6 33 45 5 25 34 3 21 29 +3 16 22 2 13 18 2 10 13 1 7 9 1 5 6 0 3 4 +0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 1 1 +0 2 3 0 3 4 1 5 6 1 8 11 2 11 15 3 15 20 +3 18 24 4 23 31 5 29 40 7 36 49 8 41 55 8 45 61 +9 50 69 11 56 77 11 60 82 12 64 87 13 67 91 13 69 94 +13 72 97 14 73 99 14 74 101 14 74 101 14 74 101 14 74 101 +5 28 38 0 0 0 0 0 0 0 0 0 0 0 0 69 68 60 +148 147 146 191 183 178 224 223 222 251 251 251 255 255 255 255 255 255 +255 255 255 255 255 255 237 237 236 208 204 201 208 204 201 224 223 222 +245 245 244 255 255 255 255 255 255 255 255 255 255 255 255 254 254 254 +245 245 244 218 217 217 201 196 193 171 169 168 171 169 168 148 147 146 +148 147 146 171 169 168 171 169 168 224 223 222 255 255 255 81 83 82 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 18 24 +14 74 101 14 75 102 14 74 101 14 74 101 14 74 101 14 73 99 +13 72 97 13 69 94 13 67 92 12 64 87 11 60 82 11 56 77 +9 50 69 9 47 64 8 42 57 7 36 49 5 29 40 4 24 33 +4 19 26 3 16 22 2 12 16 2 9 12 1 7 9 1 5 6 +0 0 0 0 0 0 0 0 0 0 1 1 0 2 3 0 2 3 +0 3 4 1 5 6 1 7 9 2 10 13 2 13 18 3 16 22 +4 22 30 5 27 37 6 33 45 7 39 53 8 44 59 9 50 69 +10 54 74 11 60 82 12 64 87 13 67 91 13 69 94 13 72 97 +14 73 100 14 74 101 14 74 101 14 74 101 14 74 101 12 62 85 +0 0 0 0 0 0 0 0 0 0 0 0 6 5 5 113 114 111 +148 147 146 171 169 168 213 210 208 241 241 241 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 232 232 232 229 228 227 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +253 253 253 241 241 241 224 223 222 201 196 193 191 183 178 171 169 168 +171 169 168 148 147 146 148 147 146 171 169 168 232 232 232 191 183 178 +1 4 5 0 0 0 21 20 20 29 26 26 3 3 3 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +9 49 66 14 74 101 14 75 102 14 74 101 14 74 101 14 74 99 +13 72 98 13 72 97 13 69 94 13 67 91 12 64 87 11 60 82 +10 54 74 9 50 69 9 47 64 8 41 55 6 33 45 5 28 38 +4 23 31 4 19 26 3 15 20 2 11 15 1 8 11 1 7 9 +0 0 0 0 0 0 0 0 1 0 1 1 0 1 1 0 3 4 +1 4 5 1 7 9 2 9 12 2 12 16 3 16 22 4 20 27 +5 25 34 6 30 41 7 36 49 8 42 57 9 47 64 10 53 71 +11 58 79 12 62 85 12 66 90 13 68 93 13 72 97 14 73 99 +14 73 99 14 74 101 14 74 101 14 75 102 14 74 101 4 19 26 +0 0 0 0 0 0 0 0 0 0 0 0 39 37 35 148 147 146 +213 210 208 241 241 241 250 249 249 254 254 254 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 252 254 255 252 254 255 242 244 252 232 232 232 +218 217 217 191 183 178 171 169 168 148 147 146 171 169 168 237 237 236 +81 83 82 0 0 0 9 8 8 39 37 35 55 54 51 16 15 15 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 2 3 14 72 97 14 75 102 14 75 102 14 74 101 14 74 101 +14 73 99 13 72 98 13 72 97 13 69 94 12 66 90 12 64 87 +11 58 79 10 54 74 9 50 69 8 44 59 7 38 51 6 33 45 +5 27 37 4 22 30 3 18 24 2 13 18 2 10 13 1 7 9 +0 0 0 0 0 0 0 1 1 0 2 3 0 2 3 0 3 4 +1 5 6 1 7 9 2 10 13 3 15 20 3 18 24 4 22 30 +5 28 38 7 36 49 8 41 55 9 47 64 9 50 69 11 56 77 +11 60 82 12 66 90 13 68 93 13 69 94 13 72 98 14 73 99 +14 74 101 14 74 101 14 74 101 14 74 101 12 64 87 0 0 0 +1 1 1 9 8 8 0 0 0 0 2 3 105 98 84 232 232 232 +255 255 255 252 254 255 252 254 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +252 254 255 242 244 252 224 223 222 171 169 168 148 147 146 201 196 193 +191 183 178 3 3 3 0 0 0 0 0 0 17 25 27 55 54 51 +16 15 15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 7 36 49 14 74 101 14 75 102 14 74 101 14 74 101 +14 74 101 14 73 99 13 72 98 13 71 96 13 69 94 12 66 90 +12 62 85 11 58 79 10 53 71 9 47 64 8 42 57 7 36 49 +6 30 41 5 25 34 4 20 27 3 16 22 2 12 16 2 9 12 +0 0 0 0 0 0 0 1 1 0 2 3 0 2 3 1 4 5 +1 7 9 1 8 11 2 12 16 3 16 22 4 20 27 5 25 34 +6 30 41 7 36 49 8 44 59 9 49 66 10 54 74 11 58 79 +12 62 85 13 67 91 13 69 94 13 72 97 13 72 98 14 74 101 +14 74 101 14 74 101 14 75 102 14 74 101 6 33 45 0 0 0 +21 20 20 21 20 20 0 0 0 7 7 7 191 183 178 252 254 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 232 232 232 191 183 178 148 147 146 +218 217 217 55 54 51 0 0 1 0 0 0 0 0 0 21 20 20 +39 37 35 4 4 4 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 14 72 97 14 74 101 14 75 102 14 74 101 +14 74 101 14 74 101 13 72 98 13 72 98 13 69 94 13 67 91 +12 64 87 11 60 82 11 56 77 9 50 69 8 45 61 6 40 54 +6 33 45 5 28 38 4 23 31 4 19 26 3 15 20 2 10 13 +0 0 0 0 0 1 0 1 1 0 2 3 0 3 4 1 5 6 +1 7 9 2 10 13 2 13 18 3 18 24 4 23 31 5 28 38 +6 33 45 8 41 55 9 47 64 10 53 71 11 58 79 11 60 82 +12 66 90 13 68 93 13 71 96 13 72 98 14 73 99 14 75 102 +14 74 101 14 75 102 14 75 102 14 73 99 1 4 5 6 5 5 +47 44 41 12 12 11 0 0 0 81 83 82 242 244 252 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 252 254 255 241 241 241 201 196 193 +208 204 201 148 147 146 0 0 0 0 0 0 3 3 3 3 3 3 +12 12 11 12 12 11 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 6 33 45 14 74 101 14 75 102 14 75 102 +14 74 101 14 75 102 14 74 101 13 72 98 13 72 97 13 69 94 +12 66 90 12 64 87 11 60 82 10 54 74 9 49 66 8 42 57 +7 36 49 6 33 45 5 27 37 4 20 27 3 16 22 2 12 16 +0 0 0 0 1 1 0 2 3 0 2 3 1 4 5 1 5 6 +1 8 11 2 12 16 3 16 22 3 21 29 5 25 34 6 30 41 +7 36 49 8 44 59 9 49 66 10 54 74 11 60 82 12 64 87 +13 67 91 13 69 94 13 72 98 14 73 100 14 74 101 14 74 101 +14 75 102 14 75 102 14 74 101 11 56 77 0 0 0 29 26 26 +28 32 37 0 0 0 9 8 8 208 204 201 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 252 254 255 242 244 252 +218 217 217 218 217 217 29 26 26 0 0 0 16 15 15 39 37 35 +16 15 15 12 12 11 16 15 15 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 12 64 87 14 74 101 14 75 102 +14 75 102 14 74 101 14 74 101 14 74 99 13 72 98 13 71 96 +13 68 93 12 66 90 12 62 85 11 58 79 10 53 71 9 47 64 +8 41 55 7 36 49 6 30 41 4 24 33 4 19 26 3 15 20 +0 0 1 0 1 1 0 2 3 0 3 4 1 5 6 1 7 9 +2 10 13 2 13 18 4 19 26 4 23 31 5 29 40 6 33 45 +8 41 55 9 47 64 10 53 71 11 58 79 12 62 85 12 66 90 +13 69 94 13 72 97 14 73 99 14 74 99 14 75 102 14 74 101 +14 75 102 14 76 103 14 73 100 3 18 24 4 4 4 47 44 41 +12 12 11 0 0 0 113 114 111 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 253 253 253 254 254 254 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +254 254 254 250 249 249 113 114 111 0 0 0 17 25 27 47 44 41 +29 26 26 16 15 15 47 44 41 6 5 5 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 4 24 33 14 75 102 14 75 102 +14 75 102 14 74 101 14 74 101 14 74 101 14 73 99 13 72 98 +13 69 94 13 68 93 12 64 87 11 60 82 11 56 77 9 50 69 +8 45 61 6 40 54 6 33 45 5 27 37 3 21 29 3 16 22 +0 1 1 0 2 3 0 3 4 1 4 5 1 7 9 1 8 11 +2 12 16 3 16 22 4 20 27 5 25 34 6 33 45 7 36 49 +8 44 59 9 50 69 10 54 74 11 60 82 12 64 87 13 67 91 +13 69 94 13 72 98 14 73 99 14 74 101 14 74 101 14 75 102 +14 75 102 14 74 101 11 58 79 0 0 0 29 26 26 39 37 35 +0 0 0 47 44 41 241 241 241 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 253 253 253 248 247 247 250 249 249 254 254 254 255 255 255 +255 255 255 253 253 253 251 251 251 253 253 253 255 255 255 255 255 255 +255 255 255 255 255 255 171 169 168 0 0 0 12 12 11 39 37 35 +12 12 11 0 0 1 55 54 51 39 37 35 0 0 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 13 69 94 14 75 102 +14 75 102 14 75 102 14 74 101 14 74 101 14 74 99 13 72 98 +13 71 96 13 69 94 13 67 91 12 62 85 11 58 79 10 53 71 +9 47 64 8 42 57 7 36 49 6 30 41 4 24 33 3 18 24 +0 1 1 0 2 3 0 3 4 1 5 6 1 7 9 2 10 13 +2 13 18 3 18 24 4 23 31 5 28 38 6 33 45 7 39 53 +9 47 64 10 53 71 11 58 79 12 62 85 12 66 90 13 69 94 +13 71 96 13 72 98 14 74 101 14 74 101 14 74 101 14 75 102 +14 75 102 14 75 102 5 27 37 0 0 0 39 37 35 21 20 20 +0 0 1 148 147 146 251 251 251 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 245 245 244 237 237 236 241 241 241 251 251 251 255 255 255 +255 255 255 250 249 249 248 247 247 251 251 251 254 254 254 255 255 255 +255 255 255 255 255 255 218 217 217 7 7 7 0 0 0 6 5 5 +0 0 0 0 0 0 39 37 35 69 68 60 0 0 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 9 50 69 14 74 101 +14 74 101 14 75 102 14 75 102 14 74 101 14 74 101 14 73 99 +13 72 98 13 69 94 13 68 93 12 64 87 11 60 82 10 54 74 +9 49 66 8 45 61 7 39 53 6 33 45 5 27 37 3 21 29 +0 1 1 0 3 4 1 4 5 1 7 9 2 9 12 2 12 16 +3 16 22 3 21 29 5 25 34 6 33 45 7 38 51 8 42 57 +9 49 66 10 54 74 11 60 82 12 64 87 13 67 91 13 69 94 +13 72 98 14 73 99 14 74 101 14 74 101 14 75 102 14 75 102 +14 75 102 13 72 98 0 1 1 12 12 11 39 37 35 4 4 4 +16 15 15 218 217 217 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +253 253 253 237 237 236 213 210 208 224 223 222 245 245 244 251 251 251 +253 253 253 245 245 244 241 241 241 248 247 247 253 253 253 255 255 255 +255 255 255 252 254 255 250 249 249 47 44 41 0 0 0 0 0 0 +0 0 0 0 0 0 16 15 15 69 68 60 9 8 8 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 3 15 20 14 75 102 +14 75 102 14 75 102 14 75 102 14 74 101 14 74 101 14 74 101 +13 72 98 13 72 97 13 69 94 12 66 90 12 64 87 11 58 79 +10 53 71 9 49 66 8 42 57 7 36 49 5 29 40 4 23 31 +0 2 3 1 4 5 1 7 9 1 8 11 2 11 15 3 15 20 +3 18 24 4 23 31 5 29 40 7 36 49 8 41 55 9 47 64 +10 53 71 11 58 79 12 62 85 12 66 90 13 69 94 13 71 96 +13 72 98 14 74 99 14 74 101 14 74 101 14 75 102 14 75 102 +14 74 101 10 53 71 0 0 0 21 20 20 21 20 20 0 0 0 +81 83 82 254 254 254 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +254 251 250 224 223 222 201 196 193 208 204 201 229 228 227 245 245 244 +250 249 249 241 241 241 237 237 236 241 241 241 248 247 247 254 254 254 +255 255 255 255 255 255 255 255 255 81 83 82 0 0 0 0 0 0 +0 0 0 0 0 0 1 4 5 69 68 60 16 15 15 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13 68 93 +14 75 102 14 75 102 14 75 102 14 75 102 14 74 101 14 74 101 +14 73 100 13 72 98 13 71 96 13 68 93 12 64 87 11 60 82 +11 56 77 9 50 69 8 45 61 7 39 53 6 33 45 5 25 34 +0 3 4 1 4 5 1 7 9 2 10 13 2 13 18 3 16 22 +3 21 29 5 27 37 6 33 45 7 39 53 8 45 61 9 50 69 +10 54 74 11 60 82 12 64 87 13 67 91 13 69 94 13 72 98 +14 73 99 14 75 102 14 74 101 14 75 102 14 75 102 14 75 102 +14 74 101 2 11 15 0 0 0 12 12 11 6 5 5 0 0 0 +148 147 146 253 253 253 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 248 247 247 245 245 244 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +250 249 249 218 217 217 191 183 178 191 183 178 213 210 208 237 237 236 +248 247 247 237 237 236 232 232 232 237 237 236 245 245 244 253 253 253 +255 255 255 255 255 255 255 255 255 113 114 111 2 2 2 0 0 0 +0 0 0 0 0 0 3 3 3 47 44 41 12 12 11 0 0 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 49 66 +14 74 101 14 75 102 14 75 102 14 75 102 14 74 101 14 74 101 +14 74 101 13 72 98 13 72 97 13 69 94 12 66 90 12 62 85 +11 58 79 10 53 71 9 47 64 8 42 57 7 36 49 5 27 37 +1 4 5 1 5 6 1 8 11 2 11 15 3 16 22 4 20 27 +4 24 33 6 30 41 7 36 49 8 42 57 9 47 64 10 53 71 +11 58 79 12 62 85 12 66 90 13 69 94 13 71 96 13 72 98 +14 74 99 14 74 101 14 74 101 14 75 102 14 75 102 14 74 101 +11 58 79 0 0 0 9 8 8 12 12 11 0 0 0 2 2 2 +201 196 193 252 254 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 229 228 227 224 223 222 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +248 247 247 213 210 208 191 183 178 191 183 178 201 196 193 229 228 227 +245 245 244 237 237 236 229 228 227 232 232 232 241 241 241 251 251 251 +255 255 255 255 255 255 255 255 255 171 169 168 0 0 0 0 0 0 +0 0 0 0 0 0 1 1 1 29 26 26 12 12 11 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 20 27 +14 75 102 14 75 102 14 75 102 14 76 103 14 75 102 14 74 101 +14 74 101 14 73 99 13 72 98 13 69 94 13 68 93 12 64 87 +11 60 82 11 56 77 9 50 69 8 44 59 7 36 49 6 30 41 +1 5 6 1 7 9 2 9 12 2 13 18 3 18 24 3 21 29 +5 27 37 6 33 45 7 39 53 8 45 61 9 50 69 10 54 74 +11 60 82 12 64 87 13 67 91 13 69 94 13 72 98 14 73 99 +14 74 101 14 75 102 14 76 103 14 75 102 14 76 103 14 75 102 +4 19 26 0 0 0 21 20 20 29 26 26 0 0 0 29 26 26 +232 232 232 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 252 254 255 250 252 255 +250 252 255 213 210 208 218 217 217 255 255 255 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 254 254 254 +248 247 247 208 204 201 171 169 168 191 183 178 201 196 193 224 223 222 +241 241 241 237 237 236 229 228 227 232 232 232 241 241 241 250 249 249 +255 255 255 255 255 255 252 254 255 208 204 201 4 4 4 0 0 0 +0 0 0 0 0 0 0 0 0 9 8 8 6 5 5 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 5 6 +14 75 102 14 76 103 14 76 103 14 76 103 14 76 103 14 75 102 +14 74 101 14 74 101 13 72 98 13 72 97 13 69 94 12 66 90 +12 62 85 11 56 77 10 53 71 8 45 61 7 39 53 6 30 41 +1 7 9 1 8 11 2 11 15 3 15 20 4 20 27 4 24 33 +6 30 41 7 36 49 8 42 57 9 47 64 10 53 71 11 58 79 +12 62 85 12 66 90 13 69 94 13 72 97 14 73 100 14 74 101 +14 75 102 14 76 103 14 76 103 14 76 103 14 75 102 12 62 85 +0 0 0 0 0 0 39 37 35 47 44 41 0 2 3 69 68 60 +253 253 253 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 245 245 244 213 210 208 176 158 88 176 158 88 199 145 62 +176 158 88 167 119 72 171 169 168 237 237 236 255 255 255 255 255 255 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +245 245 244 208 204 201 191 183 178 191 183 178 191 183 178 218 217 217 +237 237 236 232 232 232 232 232 232 232 232 232 241 241 241 248 247 247 +254 254 254 255 255 255 255 255 255 224 223 222 12 12 11 0 0 0 +0 0 0 0 0 0 7 7 7 12 12 11 1 1 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +13 69 94 14 76 103 14 76 103 14 76 103 14 76 103 14 76 103 +14 75 102 14 74 101 14 73 99 13 72 98 13 69 94 12 66 90 +12 64 87 11 58 79 10 53 71 9 47 64 8 41 55 6 33 45 +1 7 9 2 10 13 2 13 18 3 18 24 4 23 31 5 28 38 +6 33 45 7 39 53 9 47 64 10 53 71 11 56 77 11 60 82 +12 64 87 13 68 93 13 72 97 14 73 100 14 74 101 14 75 102 +14 76 103 14 78 106 14 78 106 14 78 106 14 76 103 3 16 22 +0 0 0 1 1 1 55 54 51 47 44 41 0 0 1 113 114 111 +254 254 254 255 255 255 255 255 255 255 255 255 255 255 255 250 252 255 +225 202 147 174 129 27 183 122 1 183 122 1 183 122 1 183 122 1 +183 122 1 183 122 1 183 122 1 174 129 27 225 202 147 248 247 247 +255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 253 253 253 +237 237 236 208 204 201 191 183 178 191 183 178 191 183 178 208 204 201 +229 228 227 237 237 236 232 232 232 232 232 232 237 237 236 245 245 244 +253 253 253 255 255 255 255 255 255 229 228 227 16 15 15 0 0 0 +0 0 0 0 0 0 29 26 26 28 32 37 1 1 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +12 62 85 14 76 103 14 78 106 14 78 106 14 78 106 14 76 103 +14 75 102 14 74 101 14 74 101 13 72 98 13 69 94 13 68 93 +12 64 87 11 60 82 10 54 74 9 49 66 8 42 57 7 36 49 +1 8 11 2 12 16 3 15 20 4 20 27 5 25 34 6 30 41 +7 36 49 8 42 57 9 49 66 10 54 74 11 58 79 12 64 87 +13 67 91 13 69 94 13 72 98 14 74 101 14 76 103 14 78 106 +14 78 106 14 78 106 15 82 111 14 78 106 11 58 79 0 0 0 +0 0 0 2 2 2 55 54 51 55 54 51 0 0 0 148 147 146 +253 253 253 255 255 255 255 255 255 255 255 255 245 245 244 176 158 88 +183 122 1 183 122 1 183 122 1 183 122 1 194 135 4 194 135 4 +194 135 4 183 122 1 183 122 1 183 122 1 183 122 1 176 158 88 +229 228 227 255 255 255 255 255 255 255 255 255 255 255 255 251 251 251 +232 232 232 208 204 201 201 196 193 191 183 178 191 183 178 201 196 193 +224 223 222 232 232 232 232 232 232 232 232 232 232 232 232 241 241 241 +251 251 251 255 255 255 255 255 255 224 223 222 21 20 20 0 0 0 +0 0 0 0 0 0 47 44 41 47 44 41 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +11 60 82 14 78 106 15 82 111 14 78 106 14 78 106 14 78 106 +14 75 102 14 75 102 14 74 101 13 72 98 13 71 96 13 68 93 +12 64 87 11 60 82 11 56 77 9 50 69 8 44 59 7 36 49 +2 9 12 2 13 18 3 16 22 4 22 30 5 28 38 6 33 45 +7 39 53 8 45 61 10 53 71 11 56 77 12 62 85 12 66 90 +13 69 94 13 72 97 14 74 101 14 76 103 14 78 106 15 82 111 +15 82 111 15 82 111 15 86 117 15 82 111 4 20 27 0 0 0 +0 0 0 0 0 1 39 37 35 55 54 51 0 0 0 148 147 146 +255 255 255 255 255 255 255 255 255 255 255 255 176 158 88 183 122 1 +183 122 1 183 122 1 183 122 1 194 135 4 202 153 21 194 135 4 +202 153 21 194 135 4 194 135 4 183 122 1 183 122 1 183 122 1 +199 145 62 232 232 232 255 255 255 255 255 255 254 254 254 245 245 244 +224 223 222 208 204 201 208 204 201 191 183 178 191 183 178 201 196 193 +213 210 208 232 232 232 232 232 232 232 232 232 232 232 232 241 241 241 +248 247 247 254 254 254 255 255 255 224 223 222 29 26 26 0 0 0 +0 0 0 1 5 6 69 68 60 29 26 26 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +10 54 74 15 82 111 15 82 111 15 82 111 14 78 106 14 78 106 +14 76 103 14 75 102 14 74 101 14 73 99 13 71 96 13 68 93 +12 64 87 12 61 82 11 56 77 9 50 69 8 45 61 7 36 49 +2 10 13 2 13 18 4 19 26 4 24 33 6 30 41 7 36 49 +8 41 55 9 47 64 10 54 74 11 58 79 12 64 87 12 66 90 +13 69 94 13 72 98 14 75 102 14 78 106 15 82 111 15 82 111 +15 86 117 15 86 117 15 86 117 15 86 117 1 7 9 0 0 0 +0 0 0 0 0 1 21 20 20 69 68 60 2 2 2 148 147 146 +255 255 255 255 255 255 254 254 254 208 204 201 194 135 4 194 135 4 +183 122 1 183 122 1 194 135 4 194 135 4 202 153 21 202 153 21 +202 153 21 202 153 21 194 135 4 183 122 1 183 122 1 183 122 1 +183 122 1 176 158 88 255 255 255 255 255 255 254 254 254 237 237 236 +213 210 208 213 210 208 208 204 201 201 196 193 191 183 178 201 196 193 +208 204 201 229 228 227 232 232 232 232 232 232 232 232 232 241 241 241 +248 247 247 253 253 253 255 255 255 224 223 222 29 26 26 0 0 0 +0 0 0 16 15 15 81 83 82 7 7 7 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +11 56 77 15 86 117 15 86 117 15 82 111 15 82 111 14 78 106 +14 76 103 14 75 102 14 74 101 13 72 98 13 71 96 13 68 93 +12 64 87 12 61 82 11 56 77 9 50 69 8 45 61 7 36 49 +1 10 14 3 15 20 4 19 26 5 25 34 6 30 41 7 36 49 +8 44 59 9 50 69 10 54 74 11 60 82 12 64 87 13 68 93 +13 72 97 14 75 102 14 78 106 15 82 111 15 82 111 15 86 117 +16 90 122 16 90 122 16 90 122 16 90 122 2 13 18 0 0 0 +0 0 0 0 0 0 0 2 3 47 44 41 29 26 26 148 147 146 +252 254 255 255 255 255 251 251 251 199 145 62 194 135 4 183 122 1 +183 122 1 194 135 4 194 135 4 202 153 21 202 153 21 202 153 21 +202 153 21 202 153 21 202 153 21 194 135 4 183 122 1 183 122 1 +194 135 4 194 135 4 229 228 227 255 255 255 250 249 249 229 228 227 +208 204 201 213 210 208 213 210 208 201 196 193 191 183 178 201 196 193 +201 196 193 224 223 222 232 232 232 232 232 232 232 232 232 241 241 241 +248 247 247 253 253 253 255 255 255 224 223 222 29 26 26 0 0 0 +0 0 0 55 54 51 55 54 51 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +12 66 90 16 90 122 15 86 117 15 86 117 15 82 111 14 78 106 +14 78 106 14 75 102 14 74 101 13 72 98 13 71 96 13 68 93 +12 64 87 12 62 85 11 56 77 9 50 69 8 45 61 7 36 49 +2 11 15 3 15 20 4 20 27 5 25 34 6 33 45 7 38 51 +8 45 61 9 50 69 11 58 79 12 61 82 12 66 90 13 69 94 +14 73 99 14 76 103 15 82 111 15 86 117 15 86 117 16 90 122 +16 90 122 15 94 128 15 94 128 15 94 128 1 37 56 5 1 0 +72 47 3 109 74 3 35 25 1 2 11 15 47 44 41 148 147 146 +255 255 255 255 255 255 224 223 222 194 135 4 194 135 4 183 122 1 +183 122 1 183 122 1 194 135 4 202 153 21 202 153 21 225 176 47 +202 153 21 202 153 21 202 153 21 194 135 4 183 122 1 183 122 1 +194 135 4 183 122 1 225 202 147 254 251 250 245 245 244 213 210 208 +201 196 193 213 210 208 213 210 208 201 196 193 201 196 193 201 196 193 +201 196 193 224 223 222 232 232 232 232 232 232 237 237 236 245 245 244 +248 247 247 253 253 253 255 255 255 213 210 208 12 12 11 0 0 0 +4 4 4 69 68 60 16 15 15 0 0 0 0 0 0 3 1 3 +0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 +15 82 111 16 90 122 16 90 122 15 86 117 15 82 111 15 82 111 +14 78 106 14 75 102 14 74 101 14 73 99 13 71 96 13 68 93 +12 64 87 12 61 82 11 56 77 9 50 69 8 45 61 7 36 49 +2 11 15 3 15 20 3 21 29 5 27 37 6 33 45 7 39 53 +8 45 61 10 53 71 11 58 79 12 64 87 13 67 92 13 71 96 +14 74 101 14 78 106 15 82 111 15 86 117 16 90 122 16 90 122 +15 94 128 15 94 128 15 94 128 15 94 128 57 82 86 209 152 1 +255 210 1 255 210 1 241 197 0 109 74 3 1 7 9 113 114 111 +255 255 255 253 253 253 225 202 147 183 122 1 194 135 4 183 122 1 +183 122 1 194 135 4 194 135 4 202 153 21 202 153 21 202 153 21 +202 153 21 202 153 21 194 135 4 194 135 4 183 122 1 183 122 1 +183 122 1 194 135 4 199 145 62 250 251 253 237 237 236 201 196 193 +191 183 178 213 210 208 213 210 208 201 196 193 201 196 193 201 196 193 +208 204 201 224 223 222 232 232 232 232 232 232 237 237 236 248 247 247 +250 252 255 255 255 255 250 252 255 113 114 111 0 0 0 0 0 0 +28 32 37 69 68 60 6 5 5 5 1 0 83 13 44 121 31 83 +121 31 83 29 26 26 0 0 0 0 0 0 0 0 0 4 22 30 +16 90 122 15 94 128 16 90 122 16 90 122 15 86 117 15 82 111 +14 78 106 14 76 103 14 74 101 14 73 99 13 71 96 13 68 93 +12 64 87 11 60 82 11 56 77 9 50 69 8 44 59 7 36 49 +2 11 15 3 15 20 3 21 29 5 27 37 6 33 45 7 39 53 +8 45 61 10 53 71 11 58 79 12 64 87 13 69 94 14 73 99 +14 76 103 15 82 111 15 86 117 16 90 122 16 90 122 15 94 128 +15 94 128 15 94 128 15 94 128 39 101 116 225 176 47 255 210 1 +255 206 13 255 206 13 255 210 1 255 210 1 154 101 6 11 13 22 +171 169 168 255 255 255 176 158 88 194 135 4 194 135 4 194 135 4 +183 122 1 183 122 1 194 135 4 194 135 4 202 153 21 202 153 21 +202 153 21 202 153 21 194 135 4 183 122 1 183 122 1 183 122 1 +194 135 4 194 135 4 199 145 62 237 237 236 229 228 227 191 183 178 +191 183 178 213 210 208 208 204 201 201 196 193 201 196 193 201 196 193 +208 204 201 224 223 222 232 232 232 232 232 232 245 245 244 247 240 225 +225 202 147 245 217 114 245 217 114 154 101 6 35 25 1 28 32 37 +55 54 51 29 26 26 9 8 8 47 44 41 161 10 114 161 10 114 +161 10 114 121 31 83 12 12 11 29 26 26 3 1 3 6 57 82 +15 94 128 15 94 128 15 94 128 16 90 122 15 86 117 15 82 111 +14 78 106 14 75 102 14 74 101 13 72 98 13 69 94 13 67 91 +12 64 87 11 60 82 10 54 74 9 49 66 8 42 57 7 36 49 +2 11 15 3 16 22 3 21 29 5 27 37 6 33 45 7 39 53 +9 47 64 10 53 71 11 58 79 12 64 87 13 69 94 14 73 99 +14 78 106 15 82 111 15 86 117 16 90 122 15 94 128 15 94 128 +15 94 128 15 94 128 15 94 128 176 158 88 241 197 0 255 206 13 +255 208 38 255 213 45 254 207 32 255 210 1 255 210 1 35 25 1 +2 9 12 171 169 168 176 158 88 174 129 27 194 135 4 194 135 4 +183 122 1 183 122 1 183 122 1 194 135 4 194 135 4 194 135 4 +194 135 4 194 135 4 194 135 4 183 122 1 183 122 1 194 135 4 +194 135 4 194 135 4 174 129 27 224 226 233 224 223 222 191 183 178 +191 183 178 208 204 201 208 204 201 208 204 201 201 196 193 201 196 193 +208 204 201 224 223 222 232 232 232 237 237 236 242 244 252 245 217 114 +255 206 13 255 213 23 255 213 23 255 234 21 154 101 6 20 41 44 +4 0 5 0 2 3 7 7 7 81 83 82 105 98 84 121 31 83 +121 31 83 55 54 51 55 54 51 39 37 35 22 11 1 61 109 99 +15 94 128 15 94 128 15 94 128 16 90 122 15 86 117 15 82 111 +14 78 106 14 76 103 14 74 101 13 72 98 13 69 94 12 66 90 +12 62 85 11 58 79 10 53 71 9 47 64 8 41 55 6 33 45 +2 11 15 3 16 22 3 21 29 5 28 38 6 33 45 6 40 54 +9 47 64 10 54 74 11 60 82 12 66 90 13 72 97 14 76 103 +15 82 111 15 86 117 16 90 122 15 94 128 15 94 128 15 94 128 +15 94 128 15 94 128 61 109 99 255 205 1 255 206 13 255 213 45 +255 209 49 255 209 52 255 209 52 254 207 32 255 210 1 234 181 0 +22 11 1 1 8 11 105 82 42 174 129 27 194 135 4 194 135 4 +194 135 4 183 122 1 183 122 1 183 122 1 194 135 4 194 135 4 +194 135 4 183 122 1 183 122 1 183 122 1 183 122 1 194 135 4 +194 135 4 183 122 1 167 119 72 218 217 217 213 210 208 191 183 178 +191 183 178 208 204 201 201 196 193 208 204 201 208 204 201 201 196 193 +208 204 201 224 223 222 232 232 232 237 237 236 241 241 241 235 193 64 +254 207 32 255 215 52 248 200 52 235 193 64 109 74 3 1 7 9 +0 0 0 0 0 0 0 0 0 9 8 8 29 26 26 17 25 27 +16 15 15 9 8 8 0 2 3 4 0 5 83 13 44 178 87 56 +61 109 99 15 94 128 15 94 128 16 90 122 15 86 117 15 82 111 +14 78 106 14 76 103 14 73 99 13 72 97 13 68 93 12 64 87 +11 60 82 11 56 77 9 50 69 8 45 61 7 39 53 6 33 45 +2 12 16 3 16 22 4 23 31 5 29 40 7 36 49 8 42 57 +9 49 66 11 56 77 12 62 85 13 69 94 14 74 101 14 78 106 +15 82 111 15 86 117 16 90 122 15 94 128 15 94 128 15 94 128 +15 94 128 39 101 116 234 181 0 255 210 1 254 207 32 255 209 52 +255 209 51 255 209 51 255 209 52 255 209 49 255 206 13 255 210 1 +194 135 4 0 0 0 0 0 0 35 25 1 154 101 6 194 135 4 +194 135 4 194 135 4 183 122 1 183 122 1 183 122 1 183 122 1 +183 122 1 183 122 1 183 122 1 194 135 4 183 122 1 183 122 1 +183 122 1 174 129 27 176 158 88 218 217 217 208 204 201 191 183 178 +191 183 178 201 196 193 201 196 193 208 204 201 213 210 208 201 196 193 +208 204 201 224 223 222 232 232 232 241 241 241 237 237 236 225 176 47 +255 213 23 225 176 47 172 59 77 161 10 114 83 13 44 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 +0 0 0 0 0 0 22 11 1 121 31 83 161 10 114 172 59 77 +176 158 88 15 94 128 15 94 128 16 90 122 15 86 117 15 82 111 +14 78 106 14 76 103 14 73 100 13 71 96 13 67 92 12 64 87 +11 58 79 10 54 74 9 49 66 8 42 57 7 36 49 5 29 40 +2 13 18 4 19 26 5 25 34 6 33 45 7 39 53 8 45 61 +10 53 71 11 60 82 12 66 90 13 72 98 14 78 106 15 82 111 +15 86 117 16 90 122 16 90 122 15 94 128 15 94 128 15 94 128 +39 101 116 174 129 27 255 205 1 255 205 1 255 208 38 255 209 52 +255 209 51 255 209 51 255 209 51 255 209 52 255 208 38 255 210 1 +255 210 1 109 74 3 0 0 0 7 5 1 16 15 15 154 101 6 +183 122 1 183 122 1 183 122 1 183 122 1 183 122 1 183 122 1 +183 122 1 183 122 1 183 122 1 183 122 1 183 122 1 194 135 4 +174 129 27 174 129 27 176 158 88 218 217 217 201 196 193 191 183 178 +191 183 178 191 183 178 191 183 178 208 204 201 213 210 208 208 204 201 +208 204 201 224 223 222 232 232 232 245 245 244 232 232 232 202 153 21 +255 205 1 178 87 56 150 20 84 161 10 114 83 13 44 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 72 47 3 183 122 1 154 101 6 172 59 77 199 145 62 +176 158 88 15 94 128 15 94 128 15 94 128 16 90 122 15 86 117 +15 82 111 14 78 106 14 73 99 13 69 94 12 66 90 12 62 85 +11 56 77 10 53 71 8 45 61 6 40 54 6 33 45 5 27 37 +3 15 20 3 21 29 5 28 38 7 36 49 8 44 59 9 49 66 +8 56 78 12 62 85 13 69 94 13 74 101 14 78 106 15 82 111 +15 86 117 16 90 122 15 94 128 16 90 122 39 101 116 81 83 82 +174 129 27 243 191 0 255 205 1 255 206 22 255 209 45 255 209 52 +255 209 51 255 209 51 255 209 51 255 209 52 255 209 51 255 206 22 +255 210 1 241 197 0 72 47 3 0 1 1 1 1 1 2 2 2 +109 74 3 194 135 4 194 135 4 183 122 1 183 122 1 183 122 1 +183 122 1 183 122 1 183 122 1 194 135 4 194 135 4 174 129 27 +174 129 27 174 129 27 191 183 178 213 210 208 201 196 193 191 183 178 +191 183 178 191 183 178 191 183 178 213 210 208 213 210 208 208 204 201 +213 210 208 218 217 217 232 232 232 224 226 233 191 183 178 202 153 21 +255 205 1 172 59 77 161 10 114 172 59 77 154 101 6 72 47 3 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +72 47 3 183 122 1 194 135 4 222 168 1 209 152 1 178 87 56 +167 119 72 15 94 128 15 94 128 15 94 128 16 90 122 15 86 117 +15 82 111 14 78 106 14 74 101 13 69 94 12 64 87 11 60 82 +10 54 74 9 50 69 8 44 59 7 36 49 6 30 41 4 24 33 +3 16 22 4 23 31 6 30 41 7 39 53 9 47 64 10 53 71 +8 56 78 9 63 87 13 71 96 12 75 102 15 82 111 15 82 111 +15 86 117 61 109 99 105 98 84 194 135 4 194 135 4 209 152 1 +234 181 0 255 205 1 255 205 1 255 206 22 255 209 52 255 209 52 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 52 255 208 38 +255 205 1 255 210 1 222 168 1 7 5 1 0 0 0 0 0 0 +0 0 0 72 47 3 183 122 1 209 152 1 194 135 4 194 135 4 +194 135 4 194 135 4 194 135 4 174 129 27 174 129 27 174 129 27 +194 135 4 176 158 88 201 196 193 208 204 201 201 196 193 201 196 193 +191 183 178 171 169 168 191 183 178 213 210 208 213 210 208 208 204 201 +213 210 208 224 223 222 224 223 222 201 196 193 148 147 146 194 135 4 +255 205 1 178 87 56 178 87 56 183 122 1 183 122 1 154 101 6 +72 47 3 22 11 1 7 5 1 7 5 1 22 11 1 109 74 3 +194 135 4 209 152 1 222 168 1 255 205 1 178 87 56 161 10 114 +81 83 82 15 94 128 15 94 128 15 94 128 16 90 122 16 90 122 +15 86 117 14 78 106 14 75 102 13 69 94 12 64 87 11 58 79 +10 53 71 9 47 64 8 41 55 6 33 45 5 28 38 4 22 30 +3 16 22 4 24 33 6 33 45 6 40 54 7 48 67 10 53 71 +11 58 79 10 65 89 11 69 94 12 75 102 9 72 100 61 109 99 +202 153 21 249 197 0 255 210 1 255 205 1 255 205 1 255 205 1 +255 205 1 255 205 1 255 206 13 255 208 38 255 209 52 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 52 255 209 49 +255 206 22 255 210 1 255 210 1 109 74 3 0 0 0 0 0 0 +0 0 0 3 3 3 21 20 20 154 101 6 194 135 4 174 129 27 +174 129 27 174 129 27 174 129 27 174 129 27 194 135 4 194 135 4 +174 129 27 171 169 168 201 196 193 201 196 193 201 196 193 201 196 193 +191 183 178 191 183 178 191 183 178 208 204 201 213 210 208 213 210 208 +218 217 217 218 217 217 218 217 217 191 183 178 148 147 146 154 101 6 +178 87 56 154 101 6 241 197 0 234 181 0 209 152 1 194 135 4 +183 122 1 154 101 6 154 101 6 154 101 6 154 101 6 194 135 4 +222 168 1 243 191 0 255 206 13 255 206 22 172 59 77 161 10 114 +150 20 84 15 94 128 15 94 128 15 94 128 15 94 128 16 90 122 +15 86 117 15 82 111 14 76 103 13 69 94 12 64 87 11 56 77 +9 50 69 8 44 59 7 38 51 6 30 41 5 25 34 4 19 26 +3 16 22 4 24 33 6 33 45 6 40 54 7 48 67 10 53 71 +8 56 78 9 63 87 11 69 94 9 72 100 35 87 96 222 168 1 +255 210 1 255 205 1 255 205 1 255 205 1 255 205 1 255 205 1 +255 205 1 255 206 13 254 207 32 255 209 51 255 209 52 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 52 +255 208 38 255 206 13 255 210 1 249 197 0 35 25 1 0 0 0 +0 0 0 0 0 0 1 1 1 7 5 1 105 82 42 194 135 4 +194 135 4 194 135 4 194 135 4 194 135 4 183 122 1 167 119 72 +171 169 168 191 183 178 201 196 193 201 196 193 201 196 193 201 196 193 +191 183 178 171 169 168 191 183 178 201 196 193 213 210 208 218 217 217 +218 217 217 224 223 222 224 223 222 191 183 178 148 147 146 150 20 84 +161 10 114 178 87 56 255 210 1 255 205 1 234 181 0 222 168 1 +209 152 1 194 135 4 194 135 4 209 152 1 209 152 1 234 181 0 +249 197 0 255 208 38 253 211 50 255 214 50 172 59 77 161 10 114 +172 59 77 176 158 88 15 94 128 15 94 128 15 94 128 16 90 122 +15 86 117 15 82 111 14 78 106 13 72 97 12 64 87 11 56 77 +9 49 66 8 42 57 7 36 49 5 28 38 4 22 30 3 16 22 +3 18 24 4 24 33 6 33 45 6 40 54 7 48 67 9 50 69 +8 56 78 8 60 84 12 66 90 6 67 96 57 82 86 234 181 0 +255 205 1 255 206 22 255 208 38 255 208 38 255 208 38 255 208 38 +255 208 38 255 209 45 255 209 51 255 209 52 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 52 +255 209 51 255 206 22 255 205 1 255 210 1 194 135 4 0 1 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 154 101 6 +194 135 4 194 135 4 183 122 1 174 129 27 148 147 146 171 169 168 +171 169 168 191 183 178 201 196 193 201 196 193 201 196 193 201 196 193 +191 183 178 191 183 178 191 183 178 201 196 193 208 204 201 218 217 217 +224 223 222 224 223 222 224 223 222 201 196 193 148 147 146 161 10 114 +161 10 114 178 87 56 255 205 1 255 205 1 255 205 1 243 191 0 +234 181 0 234 181 0 234 181 0 234 181 0 243 191 0 255 205 1 +254 207 32 255 209 55 255 209 52 255 214 50 225 176 47 139 105 59 +225 176 47 255 213 23 199 145 62 15 94 128 16 90 122 16 90 122 +15 86 117 15 86 117 14 78 106 13 72 98 10 65 89 11 56 77 +9 47 64 8 41 55 6 33 45 5 25 34 4 19 26 3 15 20 +3 16 22 4 24 33 6 33 45 6 40 54 5 44 60 7 48 67 +10 54 74 11 58 79 9 63 87 8 66 93 35 87 96 222 168 1 +255 210 1 255 208 38 255 209 55 255 209 52 255 209 52 255 209 52 +255 209 52 255 209 52 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 52 255 209 45 255 206 22 255 210 1 255 210 1 109 74 3 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 105 82 42 +176 158 88 167 119 72 148 147 146 148 147 146 171 169 168 171 169 168 +191 183 178 201 196 193 201 196 193 201 196 193 201 196 193 191 183 178 +191 183 178 191 183 178 191 183 178 191 183 178 208 204 201 224 223 222 +224 223 222 229 228 227 224 226 233 201 196 193 148 147 146 150 20 84 +150 20 84 202 153 21 255 210 1 255 205 1 255 205 1 255 205 1 +255 205 1 249 197 0 255 205 1 255 205 1 255 205 1 255 205 1 +255 209 45 255 209 52 255 209 51 255 218 49 225 176 47 150 20 84 +199 145 62 255 218 49 255 213 23 176 158 88 16 90 122 16 90 122 +15 86 117 15 86 117 14 78 106 13 73 99 10 65 89 11 56 77 +9 47 64 6 40 54 6 30 41 4 24 33 3 18 24 2 12 16 +3 15 20 4 23 31 5 29 40 7 38 51 5 44 60 7 48 67 +9 50 69 8 56 78 8 60 84 9 63 87 13 71 96 202 153 21 +255 210 1 255 206 22 255 209 52 255 209 51 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 51 255 209 52 255 208 38 255 210 1 255 210 1 209 152 1 +5 1 0 0 0 0 0 0 0 0 0 0 3 1 3 81 83 82 +201 196 193 191 183 178 191 183 178 171 169 168 171 169 168 191 183 178 +191 183 178 201 196 193 208 204 201 208 204 201 191 183 178 191 183 178 +191 183 178 191 183 178 191 183 178 191 183 178 208 204 201 224 223 222 +229 228 227 229 228 227 232 232 232 208 204 201 148 147 146 109 74 3 +183 122 1 243 191 0 255 205 1 255 205 1 255 205 1 255 205 1 +255 205 1 255 205 1 255 205 1 255 205 1 255 205 1 255 206 13 +255 209 51 255 209 52 255 209 51 252 207 50 172 59 77 161 10 114 +172 59 77 253 211 50 255 218 49 255 213 23 176 158 88 16 90 122 +15 86 117 15 82 111 14 78 106 13 73 99 10 65 89 8 56 78 +7 48 67 6 40 54 6 30 41 4 22 30 3 16 22 2 11 15 +3 15 20 3 21 29 5 29 40 7 36 49 5 44 60 9 47 64 +7 48 67 6 54 76 11 58 79 9 63 87 13 67 91 174 129 27 +255 205 1 255 206 13 255 209 45 255 209 52 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 51 255 209 52 255 209 52 254 207 32 255 210 1 255 210 1 +109 74 3 0 0 0 0 0 0 0 0 0 0 0 0 113 114 111 +208 204 201 201 196 193 191 183 178 191 183 178 201 196 193 201 196 193 +201 196 193 213 210 208 213 210 208 208 204 201 191 183 178 191 183 178 +191 183 178 201 196 193 191 183 178 191 183 178 208 204 201 224 223 222 +232 232 232 229 228 227 237 237 236 171 169 168 121 31 83 150 20 84 +174 129 27 255 205 1 255 205 1 255 205 1 255 205 1 255 206 13 +255 206 13 255 206 13 255 205 1 255 206 13 255 206 13 255 208 38 +255 209 52 255 209 51 255 211 51 248 200 52 150 20 84 161 10 114 +172 59 77 252 207 50 253 211 50 253 211 50 255 213 23 176 158 88 +39 101 116 14 78 106 14 78 106 11 72 98 10 65 89 8 56 78 +7 48 67 6 40 54 6 30 41 3 21 29 3 15 20 1 10 13 +2 13 18 3 20 27 3 27 37 6 33 45 6 40 54 5 44 60 +7 48 67 10 53 71 8 56 78 8 60 84 9 63 87 139 105 59 +255 210 1 255 205 1 255 208 38 255 209 52 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 52 255 209 49 255 206 13 255 210 1 +241 197 0 35 25 1 0 0 1 7 7 7 55 54 51 171 169 168 +213 210 208 201 196 193 201 196 193 201 196 193 201 196 193 208 204 201 +213 210 208 218 217 217 218 217 217 208 204 201 191 183 178 191 183 178 +201 196 193 201 196 193 191 183 178 191 183 178 208 204 201 229 228 227 +232 232 232 237 237 236 213 210 208 81 83 82 150 20 84 161 10 114 +172 59 77 249 197 0 255 205 1 255 205 1 255 206 22 255 209 45 +255 209 45 255 209 45 255 208 38 255 208 38 255 208 38 255 209 51 +255 209 52 255 209 51 255 211 51 252 207 50 172 59 77 161 10 114 +199 145 62 252 207 50 255 209 51 255 209 51 253 211 50 255 222 40 +254 207 32 113 114 111 9 72 100 11 69 94 9 63 87 8 56 78 +9 47 64 7 39 53 5 29 40 3 20 27 2 13 18 1 8 11 +2 13 18 3 20 27 3 27 37 6 33 45 6 40 54 8 42 57 +9 47 64 7 48 67 10 54 74 8 56 78 8 60 84 139 105 59 +255 210 1 255 205 1 254 207 32 255 209 52 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 52 255 208 38 255 205 1 +255 210 1 209 152 1 113 114 111 201 196 193 224 223 222 224 226 233 +218 217 217 218 217 217 213 210 208 213 210 208 218 217 217 218 217 217 +218 217 217 224 226 233 229 228 227 208 204 201 191 183 178 191 183 178 +208 204 201 208 204 201 191 183 178 191 183 178 208 204 201 229 228 227 +245 245 244 237 237 236 81 83 82 22 11 1 150 20 84 161 10 114 +178 87 56 243 191 0 255 205 1 255 206 22 255 209 49 255 209 52 +255 209 52 255 209 52 255 209 52 255 209 52 255 209 52 255 209 51 +255 209 51 255 209 51 255 209 51 255 218 49 202 153 21 167 119 72 +255 209 45 255 211 51 255 209 51 255 209 51 255 209 51 255 209 49 +255 213 45 255 213 23 35 87 96 8 66 93 11 60 82 10 53 71 +5 44 60 7 38 51 5 27 37 3 18 24 2 12 16 1 7 9 +2 13 18 3 20 27 3 27 37 6 33 45 7 38 51 1 37 56 +5 44 60 7 48 67 7 48 67 6 54 76 8 60 84 139 105 59 +255 205 1 255 206 13 255 208 38 255 209 52 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 52 255 209 49 255 206 13 +255 205 1 255 210 1 225 176 47 224 226 233 250 251 253 232 232 232 +229 228 227 224 226 233 224 223 222 224 226 233 224 223 222 224 226 233 +232 232 232 241 241 241 232 232 232 201 196 193 191 183 178 191 183 178 +208 204 201 208 204 201 191 183 178 171 169 168 213 210 208 241 241 241 +232 232 232 81 83 82 0 0 0 1 1 1 83 13 44 150 20 84 +194 135 4 255 205 1 255 206 13 255 208 38 255 209 52 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 51 255 209 51 255 218 49 199 145 62 172 59 77 199 145 62 +255 218 49 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +253 211 50 255 208 38 35 87 96 8 60 84 8 56 78 7 48 67 +6 40 54 6 33 45 4 23 31 3 16 22 1 10 13 1 4 5 +2 13 18 3 21 29 3 27 37 6 33 45 7 38 51 6 40 54 +5 44 60 5 44 60 7 48 67 10 53 71 6 54 76 174 129 27 +255 210 1 255 206 13 255 209 45 255 209 52 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 52 255 209 49 255 206 22 +255 205 1 255 205 1 234 181 0 176 158 88 250 252 255 248 247 247 +241 241 241 237 237 236 237 237 236 232 232 232 237 237 236 241 241 241 +245 245 244 248 247 247 232 232 232 201 196 193 191 183 178 201 196 193 +213 210 208 213 210 208 171 169 168 191 183 178 224 223 222 213 210 208 +81 83 82 0 0 0 0 0 0 0 0 0 109 74 3 109 74 3 +209 152 1 255 205 1 255 206 13 255 209 45 255 209 52 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 51 255 215 52 225 176 47 150 20 84 161 10 114 172 59 77 +251 208 45 255 211 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 222 40 199 145 62 10 65 89 8 56 78 10 53 71 5 44 60 +7 36 49 5 29 40 3 20 27 2 13 18 1 8 11 1 4 5 +3 15 20 3 21 29 3 27 37 6 33 45 1 37 56 6 40 54 +5 44 60 8 45 61 7 48 67 7 48 67 10 53 71 202 153 21 +255 210 1 255 206 22 255 209 51 255 209 52 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 52 255 209 49 254 207 32 +255 205 1 255 205 1 255 210 1 194 135 4 171 169 168 252 254 255 +253 253 253 250 249 249 248 247 247 248 247 247 250 249 249 253 253 253 +254 254 254 250 249 249 224 223 222 191 183 178 191 183 178 201 196 193 +218 217 217 218 217 217 191 183 178 171 169 168 105 98 84 17 25 27 +0 0 0 0 0 0 0 0 0 7 5 1 109 74 3 150 20 84 +172 59 77 222 168 1 255 213 23 255 209 45 255 209 52 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 51 255 218 49 178 87 56 161 10 114 161 10 114 178 87 56 +255 215 52 255 209 52 255 209 51 255 209 52 255 213 45 255 208 38 +176 158 88 23 75 89 6 57 82 10 53 71 8 45 61 7 38 51 +5 29 40 4 23 31 3 16 22 1 10 14 1 7 9 0 3 4 +3 16 22 4 23 31 3 27 37 6 33 45 1 37 56 6 40 54 +8 42 57 5 44 60 5 44 60 5 44 60 45 73 77 255 210 1 +255 210 1 255 206 22 255 209 49 255 209 52 255 209 52 255 209 52 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 254 207 32 +255 205 1 255 205 1 255 205 1 243 191 0 154 101 6 191 183 178 +252 254 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 +255 255 255 248 247 247 218 217 217 191 183 178 201 196 193 208 204 201 +208 204 201 171 169 168 105 98 84 47 44 41 9 8 8 0 0 0 +0 0 0 0 0 0 0 0 0 35 25 1 154 101 6 161 10 114 +161 10 114 178 87 56 255 206 22 255 209 49 255 209 52 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 218 49 255 218 49 178 87 56 161 10 114 172 59 77 235 193 64 +255 215 52 255 209 55 255 214 50 254 207 32 225 176 47 61 109 99 +6 54 76 6 54 76 10 53 71 5 44 60 7 38 51 5 29 40 +4 23 31 3 18 24 2 12 16 1 7 9 1 4 5 0 2 3 +3 16 22 4 24 33 5 29 40 6 33 45 7 36 49 6 40 54 +6 40 54 5 44 60 5 44 60 6 40 54 139 105 59 255 210 1 +255 205 1 255 205 1 255 206 13 254 207 32 255 209 45 255 209 45 +255 209 51 255 209 52 255 209 52 255 209 52 255 209 52 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 254 207 32 +255 205 1 255 205 1 255 205 1 241 197 0 194 135 4 72 47 3 +105 98 84 171 169 168 218 217 217 237 237 236 245 245 244 245 245 244 +232 232 232 208 204 201 171 169 168 148 147 146 113 114 111 105 98 84 +55 54 51 21 20 20 29 26 26 39 37 35 21 20 20 4 4 4 +0 0 0 0 0 0 5 1 0 35 25 1 154 101 6 150 20 84 +161 10 114 172 59 77 255 213 23 255 213 45 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 51 255 209 49 +235 193 64 178 87 56 105 82 42 225 176 47 252 207 50 255 214 50 +255 213 45 255 206 22 225 176 47 105 98 84 13 67 91 6 57 82 +6 54 76 9 50 69 5 44 60 7 36 49 3 27 37 3 21 29 +3 16 22 2 12 16 1 8 11 1 5 6 0 2 3 0 1 1 +3 16 22 4 24 33 3 27 37 6 33 45 1 37 56 6 40 54 +1 37 56 6 40 54 1 37 56 5 44 60 174 129 27 255 210 1 +255 205 1 255 205 1 255 205 1 255 205 1 255 206 13 255 206 22 +255 206 22 254 207 32 255 208 38 255 209 45 255 209 45 255 209 51 +255 209 52 255 209 52 255 209 51 255 209 51 255 209 51 255 209 51 +255 209 51 255 209 51 255 209 51 255 209 51 255 209 52 255 208 38 +255 205 1 255 205 1 255 205 1 243 191 0 209 152 1 109 74 3 +4 0 5 0 0 1 12 12 11 39 37 35 47 44 41 47 44 41 +47 44 41 55 54 51 69 68 60 69 68 60 47 44 41 39 37 35 +21 20 20 22 11 1 39 37 35 47 44 41 21 20 20 6 5 5 +0 0 0 0 0 0 1 1 1 72 47 3 183 122 1 194 135 4 +172 59 77 202 153 21 225 176 47 225 176 47 253 211 50 255 211 51 +255 209 51 255 211 51 255 211 51 255 211 51 255 211 51 225 176 47 +150 20 84 161 10 114 161 10 114 225 176 47 255 222 40 255 206 22 +222 168 1 105 82 42 23 75 89 8 60 84 8 60 84 10 53 71 +7 48 67 8 42 57 7 36 49 3 27 37 3 21 29 3 15 20 +2 11 15 1 8 11 1 5 6 0 3 4 0 1 1 0 1 1 +3 16 22 3 21 29 3 27 37 6 33 45 6 33 45 6 33 45 +7 36 49 7 36 49 7 36 49 6 33 45 139 105 59 255 210 1 +255 210 1 255 205 1 255 205 1 255 205 1 255 205 1 255 205 1 +255 205 1 255 205 1 255 205 1 255 206 13 255 206 13 255 206 22 +255 208 38 255 209 45 255 209 51 255 209 52 255 209 52 255 209 52 +255 209 51 255 209 51 255 209 52 255 209 52 255 209 52 255 208 38 +255 205 1 255 205 1 255 205 1 234 181 0 209 152 1 154 101 6 +7 5 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 +16 15 15 47 44 41 69 68 60 55 54 51 47 44 41 39 37 35 +21 20 20 16 15 15 29 26 26 39 37 35 29 26 26 7 7 7 +0 0 0 0 0 0 0 0 0 72 47 3 183 122 1 209 152 1 +222 168 1 154 101 6 161 10 114 150 20 84 178 87 56 255 215 52 +255 214 50 255 209 49 248 200 52 252 207 50 255 222 40 172 59 77 +161 10 114 161 10 114 172 59 77 249 198 10 249 197 0 174 129 27 +45 73 77 6 67 96 10 65 89 8 56 78 10 53 71 5 44 60 +6 40 54 6 33 45 5 28 38 3 21 29 3 16 22 2 11 15 +1 8 11 1 5 6 0 3 4 0 2 3 0 1 1 0 0 1 +2 13 18 3 20 27 4 24 33 3 27 37 5 29 40 6 33 45 +6 33 45 6 33 45 6 33 45 6 33 45 15 45 54 174 129 27 +241 197 0 249 197 0 249 197 0 243 191 0 249 197 0 249 197 0 +249 197 0 249 197 0 255 205 1 255 205 1 255 205 1 255 205 1 +255 205 1 255 206 13 255 206 22 254 207 32 255 209 45 255 209 49 +255 209 51 255 209 51 255 209 51 255 209 49 255 208 38 255 206 13 +255 205 1 255 205 1 255 205 1 234 181 0 209 152 1 154 101 6 +22 11 1 0 0 0 0 0 0 0 0 0 0 0 0 12 12 11 +39 37 35 69 68 60 55 54 51 69 68 60 47 44 41 29 26 26 +16 15 15 12 12 11 21 20 20 39 37 35 29 26 26 9 8 8 +1 1 1 0 0 0 1 1 1 109 74 3 183 122 1 209 152 1 +243 191 0 202 153 21 161 10 114 161 10 114 150 20 84 199 145 62 +252 207 50 172 59 77 150 20 84 172 59 77 199 145 62 178 87 56 +172 59 77 178 87 56 222 168 1 209 152 1 105 82 42 23 75 89 +4 60 87 11 60 82 6 54 76 9 50 69 8 45 61 7 39 53 +6 30 41 5 27 37 3 21 29 3 15 20 2 11 15 1 8 11 +1 5 6 1 4 5 0 2 3 0 2 3 0 1 1 0 0 0 +1 10 14 3 15 20 3 18 24 3 21 29 4 24 33 4 24 33 +3 27 37 3 27 37 3 27 37 3 27 37 3 27 37 6 33 45 +69 68 60 154 101 6 194 135 4 194 135 4 209 152 1 209 152 1 +209 152 1 222 168 1 222 168 1 234 181 0 234 181 0 243 191 0 +249 197 0 255 205 1 255 205 1 255 205 1 255 205 1 255 206 13 +255 206 22 255 206 22 255 206 22 255 206 13 255 205 1 255 205 1 +255 205 1 249 197 0 234 181 0 222 168 1 209 152 1 154 101 6 +22 11 1 0 0 0 0 0 0 0 0 0 5 1 0 29 26 26 +55 54 51 69 68 60 55 54 51 47 44 41 39 37 35 29 26 26 +22 11 1 11 5 1 22 11 1 29 26 26 29 26 26 12 12 11 +1 1 1 0 0 0 5 1 0 72 47 3 183 122 1 194 135 4 +222 168 1 243 191 0 178 87 56 161 10 114 161 10 114 178 87 56 +178 87 56 161 10 114 161 10 114 161 10 114 172 59 77 222 168 1 +209 152 1 209 152 1 154 101 6 45 73 77 4 60 87 8 60 84 +11 58 79 10 53 71 9 49 66 8 42 57 7 36 49 5 29 40 +4 24 33 3 20 27 3 15 20 2 11 15 1 8 11 1 5 6 +0 3 4 0 2 3 0 1 1 0 1 1 0 0 0 0 0 0 +1 7 9 1 9 14 2 12 16 3 15 20 3 16 22 3 16 22 +3 18 24 3 20 27 3 21 29 3 20 27 4 23 31 4 23 31 +3 20 27 5 28 38 20 41 44 47 44 41 105 82 42 154 101 6 +154 101 6 183 122 1 194 135 4 194 135 4 194 135 4 209 152 1 +222 168 1 234 181 0 234 181 0 249 197 0 255 205 1 255 205 1 +255 205 1 255 205 1 255 205 1 255 205 1 255 205 1 255 205 1 +249 197 0 234 181 0 222 168 1 209 152 1 183 122 1 154 101 6 +11 5 1 0 0 0 0 0 0 0 0 0 7 5 1 39 37 35 +69 68 60 105 82 42 55 54 51 55 54 51 39 37 35 29 26 26 +17 25 27 10 20 26 17 25 27 28 32 37 29 26 26 16 15 15 +3 3 3 0 0 0 5 1 0 72 47 3 183 122 1 194 135 4 +209 152 1 222 168 1 243 191 0 222 168 1 209 152 1 209 152 1 +194 135 4 178 87 56 172 59 77 178 87 56 209 152 1 209 152 1 +183 122 1 105 82 42 12 64 87 8 60 84 11 58 79 10 54 74 +9 49 66 8 45 61 7 39 53 7 36 49 5 28 38 4 23 31 +3 18 24 3 15 20 1 10 14 1 8 11 1 5 6 0 3 4 +0 2 3 0 1 1 0 1 1 0 0 1 0 0 0 0 0 0 +1 4 5 1 7 9 1 7 9 1 8 11 1 10 13 1 10 14 +2 12 16 2 13 18 2 13 18 3 15 20 3 15 20 3 16 22 +3 20 27 3 20 27 3 21 29 4 23 31 4 24 33 5 29 40 +20 41 44 47 44 41 69 68 60 109 74 3 154 101 6 183 122 1 +183 122 1 194 135 4 209 152 1 209 152 1 222 168 1 234 181 0 +243 191 0 249 197 0 249 197 0 249 197 0 243 191 0 243 191 0 +222 168 1 209 152 1 209 152 1 183 122 1 183 122 1 109 74 3 +1 7 9 6 33 45 9 47 64 9 50 69 15 53 69 45 73 77 +81 83 82 81 83 82 81 83 82 57 82 86 45 73 77 32 65 75 +23 57 72 15 53 69 15 53 69 23 57 72 32 65 75 24 54 62 +8 45 61 7 38 51 3 27 37 72 47 3 154 101 6 183 122 1 +194 135 4 209 152 1 222 168 1 234 181 0 234 181 0 234 181 0 +234 181 0 234 181 0 209 152 1 209 152 1 194 135 4 154 101 6 +69 68 60 4 60 87 6 57 82 11 56 77 10 53 71 9 47 64 +8 42 57 7 38 51 6 33 45 5 27 37 4 22 30 3 18 24 +2 13 18 1 10 14 1 8 11 1 7 9 1 4 5 0 2 3 +0 1 1 0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 +0 1 1 0 3 4 1 4 5 1 5 6 1 5 6 1 7 9 +1 7 9 1 7 9 1 9 12 1 9 14 1 10 14 2 12 16 +2 13 18 3 15 20 3 18 24 3 20 27 3 21 29 3 27 37 +3 27 37 5 29 40 6 33 45 1 37 56 8 42 57 55 54 51 +105 82 42 154 101 6 183 122 1 194 135 4 194 135 4 209 152 1 +222 168 1 222 168 1 222 168 1 222 168 1 222 168 1 222 168 1 +209 152 1 194 135 4 183 122 1 183 122 1 109 74 3 20 41 44 +8 56 78 11 60 82 11 60 82 11 60 82 16 62 81 57 82 86 +81 83 82 61 109 99 81 83 82 57 82 86 32 65 75 32 65 75 +23 57 72 15 53 69 10 53 71 23 57 72 32 65 75 23 57 72 +10 53 71 10 54 74 6 54 76 24 54 62 154 101 6 183 122 1 +194 135 4 194 135 4 209 152 1 209 152 1 209 152 1 209 152 1 +209 152 1 209 152 1 194 135 4 183 122 1 183 122 1 69 68 60 +4 60 87 11 58 79 10 54 74 10 53 71 9 47 64 8 42 57 +7 38 51 6 33 45 5 28 38 4 23 31 3 18 24 2 13 18 +2 11 15 1 8 11 1 7 9 1 4 5 0 2 3 0 2 3 +0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 1 1 0 2 3 0 2 3 0 2 3 1 4 5 +0 3 4 1 4 5 1 4 5 1 5 6 1 7 9 1 7 9 +2 9 12 1 10 14 2 12 16 3 15 20 3 16 22 3 20 27 +4 23 31 3 27 37 6 30 41 6 33 45 7 36 49 7 38 51 +6 40 54 15 45 54 55 54 51 105 82 42 154 101 6 183 122 1 +194 135 4 194 135 4 194 135 4 209 152 1 209 152 1 209 152 1 +194 135 4 183 122 1 183 122 1 105 82 42 16 62 81 11 58 79 +11 58 79 12 61 82 11 58 79 8 56 78 11 56 77 23 75 89 +57 82 86 81 83 82 57 82 86 45 73 77 32 65 75 23 57 72 +15 53 69 7 48 67 7 48 67 10 53 71 23 57 72 15 53 69 +9 50 69 10 53 71 10 54 74 9 50 69 69 68 60 154 101 6 +183 122 1 183 122 1 194 135 4 194 135 4 194 135 4 194 135 4 +194 135 4 194 135 4 183 122 1 154 101 6 69 68 60 6 57 82 +8 56 78 10 54 74 10 53 71 9 47 64 8 44 59 7 38 51 +6 33 45 5 27 37 4 23 31 4 19 26 3 15 20 2 11 15 +1 8 11 1 7 9 1 5 6 0 3 4 0 2 3 0 1 1 +0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 1 0 0 1 0 1 1 0 1 1 0 1 1 +0 1 1 0 2 3 0 2 3 0 2 3 0 3 4 1 4 5 +1 5 6 1 7 9 1 8 11 2 9 12 2 12 16 2 13 18 +3 16 22 3 21 29 4 24 33 5 28 38 6 33 45 7 36 49 +6 40 54 5 44 60 5 44 60 5 44 60 15 53 69 55 54 51 +105 82 42 154 101 6 183 122 1 183 122 1 183 122 1 183 122 1 +183 122 1 154 101 6 105 82 42 11 56 77 8 56 78 45 73 77 +139 105 59 139 105 59 139 105 59 139 105 59 105 98 84 105 98 84 +105 98 84 113 114 111 105 98 84 105 98 84 105 98 84 105 98 84 +105 98 84 81 83 82 81 83 82 105 98 84 105 98 84 105 98 84 +105 98 84 139 105 59 139 105 59 139 105 59 105 82 42 105 82 42 +154 101 6 154 101 6 183 122 1 183 122 1 183 122 1 183 122 1 +183 122 1 154 101 6 105 82 42 32 65 75 6 57 82 8 56 78 +10 54 74 9 50 69 9 47 64 8 42 57 7 38 51 6 33 45 +5 27 37 4 23 31 4 19 26 3 15 20 2 11 15 2 9 12 +1 7 9 1 4 5 0 3 4 0 2 3 0 1 1 0 1 1 +0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 1 0 1 1 0 1 1 0 1 1 0 2 3 +0 2 3 0 3 4 1 4 5 1 7 9 1 8 11 2 10 13 +2 13 18 3 16 22 4 19 26 4 22 30 5 27 37 6 30 41 +7 36 49 7 39 53 8 42 57 5 44 60 7 48 67 7 48 67 +10 53 71 24 54 62 55 54 51 69 68 60 105 82 42 105 82 42 +69 68 60 32 65 75 6 54 76 8 56 78 6 54 76 57 82 86 +193 130 84 193 130 84 193 130 84 193 130 84 193 130 84 193 130 84 +193 130 84 193 130 84 193 130 84 193 130 84 193 130 84 193 130 84 +193 130 84 193 130 84 193 130 84 193 130 84 193 130 84 193 130 84 +193 130 84 193 130 84 193 130 84 193 130 84 105 98 84 6 54 76 +32 65 75 69 68 60 105 82 42 105 82 42 105 82 42 105 82 42 +69 68 60 32 65 75 11 58 79 8 56 78 11 56 77 10 54 74 +9 50 69 9 47 64 8 42 57 7 38 51 6 33 45 5 28 38 +4 23 31 4 19 26 3 15 20 2 12 16 2 9 12 1 7 9 +1 5 6 0 3 4 0 3 4 0 1 1 0 1 1 0 0 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 +0 1 1 0 2 3 0 3 4 1 4 5 1 5 6 1 7 9 +2 9 12 2 12 16 3 15 20 3 18 24 3 21 29 5 25 34 +6 30 41 6 33 45 7 38 51 8 41 55 8 44 59 9 47 64 +9 50 69 6 54 76 6 54 76 10 53 71 9 50 69 10 53 71 +10 53 71 6 54 76 11 56 77 11 56 77 6 54 76 32 65 75 +193 130 84 193 130 84 193 130 84 193 130 84 193 130 84 193 130 84 +167 119 72 167 119 72 167 119 72 167 119 72 167 119 72 167 119 72 +167 119 72 167 119 72 167 119 72 193 130 84 167 119 72 193 130 84 +193 130 84 193 130 84 193 130 84 193 130 84 69 68 60 6 54 76 +8 56 78 8 56 78 6 54 76 6 57 82 6 54 76 6 57 82 +6 57 82 8 56 78 11 58 79 11 56 77 10 54 74 9 50 69 +9 47 64 8 42 57 7 38 51 6 33 45 5 29 40 4 24 33 +4 19 26 3 16 22 2 13 18 2 10 13 1 7 9 1 5 6 +0 3 4 0 3 4 0 2 3 0 1 1 0 0 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 1 1 0 1 1 0 2 3 0 2 3 1 4 5 1 5 6 +1 7 9 2 9 12 2 12 16 3 15 20 3 18 24 4 22 30 +5 25 34 6 30 41 6 33 45 7 36 49 8 41 55 8 44 59 +9 47 64 9 49 66 9 50 69 9 50 69 10 53 71 10 53 71 +10 54 74 10 53 71 10 53 71 10 53 71 9 50 69 9 50 69 +167 119 72 193 130 84 193 130 84 193 130 84 167 119 72 167 119 72 +167 119 72 167 119 72 167 119 72 167 119 72 167 119 72 167 119 72 +167 119 72 167 119 72 167 119 72 167 119 72 167 119 72 167 119 72 +167 119 72 193 130 84 193 130 84 167 119 72 15 53 69 10 53 71 +11 56 77 11 56 77 8 56 78 8 56 78 8 56 78 8 56 78 +11 58 79 11 56 77 10 54 74 10 53 71 9 50 69 9 47 64 +8 42 57 7 38 51 6 33 45 6 30 41 5 25 34 3 21 29 +3 16 22 2 13 18 2 11 15 1 8 11 1 7 9 1 4 5 +0 3 4 0 1 1 0 2 3 0 1 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 1 0 1 1 0 1 1 0 1 1 0 2 3 1 4 5 +1 5 6 1 7 9 2 10 13 2 12 16 3 15 20 3 18 24 +4 22 30 5 25 34 6 30 41 6 33 45 7 36 49 8 41 55 +8 42 57 8 45 61 9 47 64 9 49 66 9 49 66 9 49 66 +9 49 66 9 50 69 9 49 66 9 49 66 9 47 64 9 47 64 +69 68 60 193 130 84 167 119 72 167 119 72 167 119 72 167 119 72 +139 105 59 139 105 59 139 105 59 139 105 59 139 105 59 139 105 59 +139 105 59 139 105 59 139 105 59 139 105 59 139 105 59 167 119 72 +167 119 72 167 119 72 193 130 84 69 68 60 8 45 61 9 50 69 +10 53 71 10 53 71 10 54 74 10 54 74 10 54 74 10 54 74 +10 54 74 10 53 71 9 50 69 9 49 66 8 45 61 8 42 57 +7 39 53 6 33 45 6 30 41 5 27 37 4 22 30 4 19 26 +3 15 20 2 11 15 2 9 12 1 7 9 1 5 6 0 3 4 +0 1 1 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 1 0 1 1 0 2 3 0 2 3 0 3 4 +1 4 5 1 5 6 1 7 9 2 9 12 2 11 15 3 15 20 +3 18 24 4 22 30 5 25 34 5 28 38 6 33 45 7 36 49 +7 38 51 6 40 54 8 42 57 8 44 59 8 44 59 8 45 61 +8 44 59 8 45 61 8 44 59 8 44 59 8 44 59 8 41 55 +8 42 57 105 82 42 167 119 72 167 119 72 139 105 59 139 105 59 +139 105 59 139 105 59 105 82 42 105 82 42 105 82 42 105 82 42 +105 82 42 105 82 42 139 105 59 139 105 59 139 105 59 139 105 59 +167 119 72 167 119 72 105 82 42 1 37 56 8 42 57 8 44 59 +8 45 61 9 47 64 9 47 64 9 49 66 9 49 66 9 49 66 +9 47 64 9 47 64 8 45 61 8 44 59 8 41 55 7 38 51 +6 33 45 5 29 40 5 27 37 4 23 31 3 18 24 3 15 20 +2 12 16 2 9 12 1 7 9 1 5 6 0 3 4 0 2 3 +0 1 1 0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 1 0 1 1 0 1 1 0 2 3 +0 3 4 1 5 6 1 7 9 1 7 9 2 9 12 2 11 15 +3 15 20 3 18 24 4 20 27 4 23 31 5 25 34 6 30 41 +6 33 45 7 36 49 7 36 49 7 38 51 7 39 53 7 39 53 +7 39 53 7 39 53 7 39 53 7 38 51 7 38 51 7 36 49 +6 33 45 8 41 55 69 68 60 167 119 72 139 105 59 139 105 59 +105 82 42 105 82 42 105 82 42 105 82 42 105 82 42 105 82 42 +105 82 42 105 82 42 105 82 42 105 82 42 139 105 59 139 105 59 +139 105 59 69 68 60 6 33 45 6 30 41 7 36 49 7 36 49 +7 38 51 8 41 55 8 41 55 8 41 55 8 42 57 8 42 57 +8 41 55 8 41 55 7 39 53 7 36 49 7 36 49 6 33 45 +5 29 40 5 25 34 3 21 29 3 18 24 3 15 20 2 12 16 +2 9 12 1 7 9 1 5 6 0 3 4 0 2 3 0 1 1 +0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 1 1 +0 2 3 0 3 4 1 4 5 1 5 6 1 7 9 2 9 12 +2 12 16 3 15 20 3 16 22 4 19 26 4 22 30 5 25 34 +5 27 37 5 29 40 6 30 41 6 33 45 6 33 45 6 33 45 +6 33 45 6 33 45 6 30 41 6 30 41 6 30 41 6 30 41 +5 27 37 5 25 34 5 25 34 28 32 37 105 82 42 105 82 42 +139 105 59 139 105 59 105 82 42 105 82 42 105 82 42 105 82 42 +105 82 42 105 82 42 105 82 42 105 82 42 105 82 42 55 54 51 +28 32 37 4 19 26 4 23 31 5 27 37 5 29 40 6 30 41 +6 33 45 6 33 45 6 33 45 6 33 45 6 33 45 7 36 49 +7 36 49 6 33 45 6 33 45 6 30 41 5 29 40 5 25 34 +4 23 31 4 20 27 3 16 22 3 15 20 2 12 16 2 9 12 +1 7 9 1 5 6 1 4 5 0 2 3 0 2 3 0 1 1 +0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 +0 1 1 0 2 3 0 3 4 1 4 5 1 5 6 1 7 9 +2 9 12 2 11 15 2 13 18 3 15 20 3 18 24 4 20 27 +4 22 30 4 24 33 5 25 34 5 25 34 5 27 37 5 27 37 +5 27 37 5 25 34 5 25 34 5 25 34 4 24 33 4 23 31 +4 22 30 3 21 29 4 19 26 3 16 22 0 14 27 21 20 20 +39 37 35 39 37 35 47 44 41 47 44 41 39 37 35 39 37 35 +39 37 35 47 44 41 39 37 35 29 26 26 2 13 18 2 11 15 +2 13 18 3 18 24 4 20 27 3 21 29 4 23 31 4 24 33 +5 25 34 5 27 37 5 27 37 5 28 38 5 28 38 5 28 38 +5 27 37 5 27 37 5 25 34 5 25 34 4 23 31 3 21 29 +3 18 24 3 15 20 2 13 18 2 11 15 2 9 12 1 7 9 +1 5 6 1 4 5 0 3 4 0 2 3 0 1 1 0 1 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 +0 1 1 0 1 1 0 2 3 0 3 4 0 3 4 1 5 6 +1 7 9 2 9 12 2 10 13 2 11 15 2 13 18 3 16 22 +3 16 22 4 19 26 4 19 26 4 20 27 4 20 27 4 19 26 +4 19 26 4 20 27 4 19 26 4 19 26 3 18 24 3 18 24 +3 16 22 3 16 22 3 15 20 3 15 20 2 12 16 2 11 15 +1 8 11 1 7 9 9 8 8 7 7 7 1 5 6 7 7 7 +1 5 6 1 7 9 7 7 7 1 9 12 2 11 15 2 12 16 +2 13 18 2 13 18 3 15 20 3 16 22 3 16 22 3 18 24 +4 19 26 4 20 27 4 20 27 3 21 29 3 21 29 3 21 29 +3 21 29 3 21 29 4 19 26 4 19 26 3 18 24 3 16 22 +3 15 20 2 12 16 1 10 14 1 8 11 1 7 9 1 5 6 +1 4 5 0 3 4 0 2 3 0 1 1 0 1 1 0 0 1 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 1 0 1 1 0 1 1 0 2 3 0 2 3 0 3 4 +1 4 5 1 7 9 1 7 9 1 8 11 2 10 13 2 11 15 +2 12 16 2 13 18 2 13 18 3 15 20 3 15 20 3 15 20 +3 15 20 3 15 20 3 15 20 2 13 18 2 12 16 2 12 16 +2 12 16 2 12 16 2 11 15 1 10 14 2 10 13 2 9 12 +1 8 11 1 8 11 1 8 11 1 8 11 1 8 11 1 8 11 +1 7 9 1 7 9 1 8 11 1 8 11 1 8 11 1 8 11 +2 9 12 2 9 12 1 10 14 2 11 15 2 11 15 2 12 16 +2 12 16 2 13 18 2 13 18 3 15 20 3 15 20 3 15 20 +3 15 20 3 15 20 2 13 18 2 13 18 2 12 16 2 11 15 +1 10 14 1 8 11 1 7 9 1 7 9 1 5 6 0 3 4 +0 2 3 0 2 3 0 1 1 0 1 1 0 0 1 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 1 0 1 1 0 1 1 0 1 1 0 3 4 +0 3 4 1 4 5 1 5 6 1 7 9 1 7 9 1 8 11 +1 8 11 2 9 12 2 10 13 2 10 13 2 10 13 2 9 12 +2 10 13 2 10 13 2 9 12 1 8 11 1 8 11 1 8 11 +1 8 11 1 7 9 1 7 9 1 7 9 1 7 9 1 7 9 +1 7 9 1 5 6 1 5 6 1 5 6 1 5 6 1 5 6 +1 5 6 1 5 6 1 5 6 1 5 6 1 5 6 1 7 9 +1 7 9 1 7 9 1 7 9 1 7 9 1 8 11 1 8 11 +1 8 11 2 9 12 2 9 12 2 9 12 2 10 13 2 9 12 +2 10 13 2 10 13 2 10 13 2 9 12 1 8 11 1 8 11 +1 7 9 1 5 6 1 4 5 1 4 5 0 3 4 0 3 4 +0 1 1 0 1 1 0 1 1 0 0 1 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 1 1 +0 1 1 0 2 3 0 3 4 0 3 4 1 4 5 1 4 5 +1 7 9 1 7 9 1 7 9 1 7 9 1 7 9 1 7 9 +1 7 9 1 7 9 1 7 9 1 7 9 1 5 6 1 4 5 +1 5 6 1 5 6 1 5 6 1 4 5 1 4 5 1 4 5 +1 4 5 1 4 5 0 3 4 0 3 4 0 3 4 0 3 4 +0 3 4 0 3 4 0 3 4 0 3 4 1 4 5 1 4 5 +1 4 5 1 4 5 1 4 5 1 4 5 1 5 6 1 4 5 +1 5 6 1 7 9 1 7 9 1 7 9 1 7 9 1 7 9 +1 7 9 1 7 9 1 7 9 1 7 9 1 7 9 1 5 6 +1 4 5 0 3 4 0 3 4 0 2 3 0 2 3 0 1 1 +0 1 1 0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 +0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 diff --git a/fs/Kconfig b/fs/Kconfig index ac474a61be3..a763a8c0567 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -133,6 +133,7 @@ if BLOCK menu "DOS/FAT/NT Filesystems" source "fs/fat/Kconfig" +source "fs/exfat/Kconfig" source "fs/ntfs/Kconfig" endmenu @@ -255,6 +256,7 @@ source "fs/pstore/Kconfig" source "fs/sysv/Kconfig" source "fs/ufs/Kconfig" source "fs/exofs/Kconfig" +source "fs/aufs/Kconfig" endif # MISC_FILESYSTEMS diff --git a/fs/Makefile b/fs/Makefile index 293733f6159..30babe389b6 100644 --- a/fs/Makefile +++ b/fs/Makefile @@ -79,6 +79,7 @@ obj-$(CONFIG_HUGETLBFS) += hugetlbfs/ obj-$(CONFIG_CODA_FS) += coda/ obj-$(CONFIG_MINIX_FS) += minix/ obj-$(CONFIG_FAT_FS) += fat/ +obj-$(CONFIG_EXFAT_FS) += exfat/ obj-$(CONFIG_BFS_FS) += bfs/ obj-$(CONFIG_ISO9660_FS) += isofs/ obj-$(CONFIG_HFSPLUS_FS) += hfsplus/ # Before hfs to find wrapped HFS+ @@ -128,3 +129,4 @@ obj-y += exofs/ # Multiple modules obj-$(CONFIG_CEPH_FS) += ceph/ obj-$(CONFIG_PSTORE) += pstore/ obj-$(CONFIG_EFIVAR_FS) += efivarfs/ +obj-$(CONFIG_AUFS_FS) += aufs/ diff --git a/fs/aufs/Kconfig b/fs/aufs/Kconfig new file mode 100644 index 00000000000..9f436425716 --- /dev/null +++ b/fs/aufs/Kconfig @@ -0,0 +1,199 @@ +# SPDX-License-Identifier: GPL-2.0 +config AUFS_FS + tristate "Aufs (Advanced multi layered unification filesystem) support" + help + Aufs is a stackable unification filesystem such as Unionfs, + which unifies several directories and provides a merged single + directory. + In the early days, aufs was entirely re-designed and + re-implemented Unionfs Version 1.x series. Introducing many + original ideas, approaches and improvements, it becomes totally + different from Unionfs while keeping the basic features. + +if AUFS_FS +choice + prompt "Maximum number of branches" + default AUFS_BRANCH_MAX_127 + help + Specifies the maximum number of branches (or member directories) + in a single aufs. The larger value consumes more system + resources and has a minor impact to performance. +config AUFS_BRANCH_MAX_127 + bool "127" + help + Specifies the maximum number of branches (or member directories) + in a single aufs. The larger value consumes more system + resources and has a minor impact to performance. +config AUFS_BRANCH_MAX_511 + bool "511" + help + Specifies the maximum number of branches (or member directories) + in a single aufs. The larger value consumes more system + resources and has a minor impact to performance. +config AUFS_BRANCH_MAX_1023 + bool "1023" + help + Specifies the maximum number of branches (or member directories) + in a single aufs. The larger value consumes more system + resources and has a minor impact to performance. +config AUFS_BRANCH_MAX_32767 + bool "32767" + help + Specifies the maximum number of branches (or member directories) + in a single aufs. The larger value consumes more system + resources and has a minor impact to performance. +endchoice + +config AUFS_SBILIST + bool + depends on AUFS_MAGIC_SYSRQ || PROC_FS + default y + help + Automatic configuration for internal use. + When aufs supports Magic SysRq or /proc, enabled automatically. + +config AUFS_HNOTIFY + bool "Detect direct branch access (bypassing aufs)" + help + If you want to modify files on branches directly, eg. bypassing aufs, + and want aufs to detect the changes of them fully, then enable this + option and use 'udba=notify' mount option. + Currently there is only one available configuration, "fsnotify". + It will have a negative impact to the performance. + See detail in aufs.5. + +choice + prompt "method" if AUFS_HNOTIFY + default AUFS_HFSNOTIFY +config AUFS_HFSNOTIFY + bool "fsnotify" + select FSNOTIFY +endchoice + +config AUFS_EXPORT + bool "NFS-exportable aufs" + depends on EXPORTFS + help + If you want to export your mounted aufs via NFS, then enable this + option. There are several requirements for this configuration. + See detail in aufs.5. + +config AUFS_INO_T_64 + bool + depends on AUFS_EXPORT + depends on 64BIT && !(ALPHA || S390) + default y + help + Automatic configuration for internal use. + /* typedef unsigned long/int __kernel_ino_t */ + /* alpha and s390x are int */ + +config AUFS_XATTR + bool "support for XATTR/EA (including Security Labels)" + help + If your branch fs supports XATTR/EA and you want to make them + available in aufs too, then enable this opsion and specify the + branch attributes for EA. + See detail in aufs.5. + +config AUFS_FHSM + bool "File-based Hierarchical Storage Management" + help + Hierarchical Storage Management (or HSM) is a well-known feature + in the storage world. Aufs provides this feature as file-based. + with multiple branches. + These multiple branches are prioritized, ie. the topmost one + should be the fastest drive and be used heavily. + +config AUFS_RDU + bool "Readdir in userspace" + help + Aufs has two methods to provide a merged view for a directory, + by a user-space library and by kernel-space natively. The latter + is always enabled but sometimes large and slow. + If you enable this option, install the library in aufs2-util + package, and set some environment variables for your readdir(3), + then the work will be handled in user-space which generally + shows better performance in most cases. + See detail in aufs.5. + +config AUFS_DIRREN + bool "Workaround for rename(2)-ing a directory" + help + By default, aufs returns EXDEV error in renameing a dir who has + his child on the lower branch, since it is a bad idea to issue + rename(2) internally for every lower branch. But user may not + accept this behaviour. So here is a workaround to allow such + rename(2) and store some extra infromation on the writable + branch. Obviously this costs high (and I don't like it). + To use this feature, you need to enable this configuration AND + to specify the mount option `dirren.' + See details in aufs.5 and the design documents. + +config AUFS_SHWH + bool "Show whiteouts" + help + If you want to make the whiteouts in aufs visible, then enable + this option and specify 'shwh' mount option. Although it may + sounds like philosophy or something, but in technically it + simply shows the name of whiteout with keeping its behaviour. + +config AUFS_BR_RAMFS + bool "Ramfs (initramfs/rootfs) as an aufs branch" + help + If you want to use ramfs as an aufs branch fs, then enable this + option. Generally tmpfs is recommended. + Aufs prohibited them to be a branch fs by default, because + initramfs becomes unusable after switch_root or something + generally. If you sets initramfs as an aufs branch and boot your + system by switch_root, you will meet a problem easily since the + files in initramfs may be inaccessible. + Unless you are going to use ramfs as an aufs branch fs without + switch_root or something, leave it N. + +config AUFS_BR_FUSE + bool "Fuse fs as an aufs branch" + depends on FUSE_FS + select AUFS_POLL + help + If you want to use fuse-based userspace filesystem as an aufs + branch fs, then enable this option. + It implements the internal poll(2) operation which is + implemented by fuse only (curretnly). + +config AUFS_POLL + bool + help + Automatic configuration for internal use. + +config AUFS_BR_HFSPLUS + bool "Hfsplus as an aufs branch" + depends on HFSPLUS_FS + default y + help + If you want to use hfsplus fs as an aufs branch fs, then enable + this option. This option introduces a small overhead at + copying-up a file on hfsplus. + +config AUFS_BDEV_LOOP + bool + depends on BLK_DEV_LOOP + default y + help + Automatic configuration for internal use. + Convert =[ym] into =y. + +config AUFS_DEBUG + bool "Debug aufs" + help + Enable this to compile aufs internal debug code. + It will have a negative impact to the performance. + +config AUFS_MAGIC_SYSRQ + bool + depends on AUFS_DEBUG && MAGIC_SYSRQ + default y + help + Automatic configuration for internal use. + When aufs supports Magic SysRq, enabled automatically. +endif diff --git a/fs/aufs/Makefile b/fs/aufs/Makefile new file mode 100644 index 00000000000..2c819a64935 --- /dev/null +++ b/fs/aufs/Makefile @@ -0,0 +1,46 @@ +# SPDX-License-Identifier: GPL-2.0 + +include ${src}/magic.mk +ifeq (${CONFIG_AUFS_FS},m) +include ${src}/conf.mk +endif +-include ${src}/priv_def.mk + +# cf. include/linux/kernel.h +# enable pr_debug +ccflags-y += -DDEBUG +# sparse requires the full pathname +ifdef M +ccflags-y += -include ${M}/../../include/uapi/linux/aufs_type.h +else +ccflags-y += -include ${srctree}/include/uapi/linux/aufs_type.h +endif + +obj-$(CONFIG_AUFS_FS) += aufs.o +aufs-y := module.o sbinfo.o super.o branch.o xino.o sysaufs.o opts.o \ + wkq.o vfsub.o dcsub.o \ + cpup.o whout.o wbr_policy.o \ + dinfo.o dentry.o \ + dynop.o \ + finfo.o file.o f_op.o \ + dir.o vdir.o \ + iinfo.o inode.o i_op.o i_op_add.o i_op_del.o i_op_ren.o \ + mvdown.o ioctl.o + +# all are boolean +aufs-$(CONFIG_PROC_FS) += procfs.o plink.o +aufs-$(CONFIG_SYSFS) += sysfs.o +aufs-$(CONFIG_DEBUG_FS) += dbgaufs.o +aufs-$(CONFIG_AUFS_BDEV_LOOP) += loop.o +aufs-$(CONFIG_AUFS_HNOTIFY) += hnotify.o +aufs-$(CONFIG_AUFS_HFSNOTIFY) += hfsnotify.o +aufs-$(CONFIG_AUFS_EXPORT) += export.o +aufs-$(CONFIG_AUFS_XATTR) += xattr.o +aufs-$(CONFIG_FS_POSIX_ACL) += posix_acl.o +aufs-$(CONFIG_AUFS_DIRREN) += dirren.o +aufs-$(CONFIG_AUFS_FHSM) += fhsm.o +aufs-$(CONFIG_AUFS_POLL) += poll.o +aufs-$(CONFIG_AUFS_RDU) += rdu.o +aufs-$(CONFIG_AUFS_BR_HFSPLUS) += hfsplus.o +aufs-$(CONFIG_AUFS_DEBUG) += debug.o +aufs-$(CONFIG_AUFS_MAGIC_SYSRQ) += sysrq.o diff --git a/fs/aufs/aufs.h b/fs/aufs/aufs.h new file mode 100644 index 00000000000..0e19d870c3f --- /dev/null +++ b/fs/aufs/aufs.h @@ -0,0 +1,61 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * all header files + */ + +#ifndef __AUFS_H__ +#define __AUFS_H__ + +#ifdef __KERNEL__ + +#define AuStub(type, name, body, ...) \ + static inline type name(__VA_ARGS__) { body; } + +#define AuStubVoid(name, ...) \ + AuStub(void, name, , __VA_ARGS__) +#define AuStubInt0(name, ...) \ + AuStub(int, name, return 0, __VA_ARGS__) + +#include "debug.h" + +#include "branch.h" +#include "cpup.h" +#include "dcsub.h" +#include "dbgaufs.h" +#include "dentry.h" +#include "dir.h" +#include "dirren.h" +#include "dynop.h" +#include "file.h" +#include "fstype.h" +#include "hbl.h" +#include "inode.h" +#include "loop.h" +#include "module.h" +#include "opts.h" +#include "rwsem.h" +#include "super.h" +#include "sysaufs.h" +#include "vfsub.h" +#include "whout.h" +#include "wkq.h" + +#endif /* __KERNEL__ */ +#endif /* __AUFS_H__ */ diff --git a/fs/aufs/branch.c b/fs/aufs/branch.c new file mode 100644 index 00000000000..61913f2b80f --- /dev/null +++ b/fs/aufs/branch.c @@ -0,0 +1,1422 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * branch management + */ + +#include +#include +#include "aufs.h" + +/* + * free a single branch + */ +static void au_br_do_free(struct au_branch *br) +{ + int i; + struct au_wbr *wbr; + struct au_dykey **key; + + au_hnotify_fin_br(br); + /* always, regardless the mount option */ + au_dr_hino_free(&br->br_dirren); + au_xino_put(br); + + AuDebugOn(au_br_count(br)); + au_br_count_fin(br); + + wbr = br->br_wbr; + if (wbr) { + for (i = 0; i < AuBrWh_Last; i++) + dput(wbr->wbr_wh[i]); + AuDebugOn(atomic_read(&wbr->wbr_wh_running)); + AuRwDestroy(&wbr->wbr_wh_rwsem); + } + + if (br->br_fhsm) { + au_br_fhsm_fin(br->br_fhsm); + kfree(br->br_fhsm); + } + + key = br->br_dykey; + for (i = 0; i < AuBrDynOp; i++, key++) + if (*key) + au_dy_put(*key); + else + break; + + /* recursive lock, s_umount of branch's */ + lockdep_off(); + path_put(&br->br_path); + lockdep_on(); + kfree(wbr); + kfree(br); +} + +/* + * frees all branches + */ +void au_br_free(struct au_sbinfo *sbinfo) +{ + aufs_bindex_t bmax; + struct au_branch **br; + + AuRwMustWriteLock(&sbinfo->si_rwsem); + + bmax = sbinfo->si_bbot + 1; + br = sbinfo->si_branch; + while (bmax--) + au_br_do_free(*br++); +} + +/* + * find the index of a branch which is specified by @br_id. + */ +int au_br_index(struct super_block *sb, aufs_bindex_t br_id) +{ + aufs_bindex_t bindex, bbot; + + bbot = au_sbbot(sb); + for (bindex = 0; bindex <= bbot; bindex++) + if (au_sbr_id(sb, bindex) == br_id) + return bindex; + return -1; +} + +/* ---------------------------------------------------------------------- */ + +/* + * add a branch + */ + +static int test_overlap(struct super_block *sb, struct dentry *h_adding, + struct dentry *h_root) +{ + if (unlikely(h_adding == h_root + || au_test_loopback_overlap(sb, h_adding))) + return 1; + if (h_adding->d_sb != h_root->d_sb) + return 0; + return au_test_subdir(h_adding, h_root) + || au_test_subdir(h_root, h_adding); +} + +/* + * returns a newly allocated branch. @new_nbranch is a number of branches + * after adding a branch. + */ +static struct au_branch *au_br_alloc(struct super_block *sb, int new_nbranch, + int perm) +{ + struct au_branch *add_branch; + struct dentry *root; + struct inode *inode; + int err; + + err = -ENOMEM; + add_branch = kzalloc(sizeof(*add_branch), GFP_NOFS); + if (unlikely(!add_branch)) + goto out; + add_branch->br_xino = au_xino_alloc(); + if (unlikely(!add_branch->br_xino)) + goto out_br; + err = au_hnotify_init_br(add_branch, perm); + if (unlikely(err)) + goto out_xino; + + if (au_br_writable(perm)) { + /* may be freed separately at changing the branch permission */ + add_branch->br_wbr = kzalloc(sizeof(*add_branch->br_wbr), + GFP_NOFS); + if (unlikely(!add_branch->br_wbr)) + goto out_hnotify; + } + + if (au_br_fhsm(perm)) { + err = au_fhsm_br_alloc(add_branch); + if (unlikely(err)) + goto out_wbr; + } + + root = sb->s_root; + err = au_sbr_realloc(au_sbi(sb), new_nbranch, /*may_shrink*/0); + if (!err) + err = au_di_realloc(au_di(root), new_nbranch, /*may_shrink*/0); + if (!err) { + inode = d_inode(root); + err = au_hinode_realloc(au_ii(inode), new_nbranch, + /*may_shrink*/0); + } + if (!err) + return add_branch; /* success */ + +out_wbr: + kfree(add_branch->br_wbr); +out_hnotify: + au_hnotify_fin_br(add_branch); +out_xino: + au_xino_put(add_branch); +out_br: + kfree(add_branch); +out: + return ERR_PTR(err); +} + +/* + * test if the branch permission is legal or not. + */ +static int test_br(struct inode *inode, int brperm, char *path) +{ + int err; + + err = (au_br_writable(brperm) && IS_RDONLY(inode)); + if (!err) + goto out; + + err = -EINVAL; + pr_err("write permission for readonly mount or inode, %s\n", path); + +out: + return err; +} + +/* + * returns: + * 0: success, the caller will add it + * plus: success, it is already unified, the caller should ignore it + * minus: error + */ +static int test_add(struct super_block *sb, struct au_opt_add *add, int remount) +{ + int err; + aufs_bindex_t bbot, bindex; + struct dentry *root, *h_dentry; + struct inode *inode, *h_inode; + + root = sb->s_root; + bbot = au_sbbot(sb); + if (unlikely(bbot >= 0 + && au_find_dbindex(root, add->path.dentry) >= 0)) { + err = 1; + if (!remount) { + err = -EINVAL; + pr_err("%s duplicated\n", add->pathname); + } + goto out; + } + + err = -ENOSPC; /* -E2BIG; */ + if (unlikely(AUFS_BRANCH_MAX <= add->bindex + || AUFS_BRANCH_MAX - 1 <= bbot)) { + pr_err("number of branches exceeded %s\n", add->pathname); + goto out; + } + + err = -EDOM; + if (unlikely(add->bindex < 0 || bbot + 1 < add->bindex)) { + pr_err("bad index %d\n", add->bindex); + goto out; + } + + inode = d_inode(add->path.dentry); + err = -ENOENT; + if (unlikely(!inode->i_nlink)) { + pr_err("no existence %s\n", add->pathname); + goto out; + } + + err = -EINVAL; + if (unlikely(inode->i_sb == sb)) { + pr_err("%s must be outside\n", add->pathname); + goto out; + } + + if (unlikely(au_test_fs_unsuppoted(inode->i_sb))) { + pr_err("unsupported filesystem, %s (%s)\n", + add->pathname, au_sbtype(inode->i_sb)); + goto out; + } + + if (unlikely(inode->i_sb->s_stack_depth)) { + pr_err("already stacked, %s (%s)\n", + add->pathname, au_sbtype(inode->i_sb)); + goto out; + } + + err = test_br(d_inode(add->path.dentry), add->perm, add->pathname); + if (unlikely(err)) + goto out; + + if (bbot < 0) + return 0; /* success */ + + err = -EINVAL; + for (bindex = 0; bindex <= bbot; bindex++) + if (unlikely(test_overlap(sb, add->path.dentry, + au_h_dptr(root, bindex)))) { + pr_err("%s is overlapped\n", add->pathname); + goto out; + } + + err = 0; + if (au_opt_test(au_mntflags(sb), WARN_PERM)) { + h_dentry = au_h_dptr(root, 0); + h_inode = d_inode(h_dentry); + if ((h_inode->i_mode & S_IALLUGO) != (inode->i_mode & S_IALLUGO) + || !uid_eq(h_inode->i_uid, inode->i_uid) + || !gid_eq(h_inode->i_gid, inode->i_gid)) + pr_warn("uid/gid/perm %s %u/%u/0%o, %u/%u/0%o\n", + add->pathname, + i_uid_read(inode), i_gid_read(inode), + (inode->i_mode & S_IALLUGO), + i_uid_read(h_inode), i_gid_read(h_inode), + (h_inode->i_mode & S_IALLUGO)); + } + +out: + return err; +} + +/* + * initialize or clean the whiteouts for an adding branch + */ +static int au_br_init_wh(struct super_block *sb, struct au_branch *br, + int new_perm) +{ + int err, old_perm; + aufs_bindex_t bindex; + struct inode *h_inode; + struct au_wbr *wbr; + struct au_hinode *hdir; + struct dentry *h_dentry; + + err = vfsub_mnt_want_write(au_br_mnt(br)); + if (unlikely(err)) + goto out; + + wbr = br->br_wbr; + old_perm = br->br_perm; + br->br_perm = new_perm; + hdir = NULL; + h_inode = NULL; + bindex = au_br_index(sb, br->br_id); + if (0 <= bindex) { + hdir = au_hi(d_inode(sb->s_root), bindex); + au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT); + } else { + h_dentry = au_br_dentry(br); + h_inode = d_inode(h_dentry); + inode_lock_nested(h_inode, AuLsc_I_PARENT); + } + if (!wbr) + err = au_wh_init(br, sb); + else { + wbr_wh_write_lock(wbr); + err = au_wh_init(br, sb); + wbr_wh_write_unlock(wbr); + } + if (hdir) + au_hn_inode_unlock(hdir); + else + inode_unlock(h_inode); + vfsub_mnt_drop_write(au_br_mnt(br)); + br->br_perm = old_perm; + + if (!err && wbr && !au_br_writable(new_perm)) { + kfree(wbr); + br->br_wbr = NULL; + } + +out: + return err; +} + +static int au_wbr_init(struct au_branch *br, struct super_block *sb, + int perm) +{ + int err; + struct kstatfs kst; + struct au_wbr *wbr; + + wbr = br->br_wbr; + au_rw_init(&wbr->wbr_wh_rwsem); + atomic_set(&wbr->wbr_wh_running, 0); + + /* + * a limit for rmdir/rename a dir + * cf. AUFS_MAX_NAMELEN in include/uapi/linux/aufs_type.h + */ + err = vfs_statfs(&br->br_path, &kst); + if (unlikely(err)) + goto out; + err = -EINVAL; + if (kst.f_namelen >= NAME_MAX) + err = au_br_init_wh(sb, br, perm); + else + pr_err("%pd(%s), unsupported namelen %ld\n", + au_br_dentry(br), + au_sbtype(au_br_dentry(br)->d_sb), kst.f_namelen); + +out: + return err; +} + +/* initialize a new branch */ +static int au_br_init(struct au_branch *br, struct super_block *sb, + struct au_opt_add *add) +{ + int err; + struct au_branch *brbase; + struct file *xf; + struct inode *h_inode; + + err = 0; + br->br_perm = add->perm; + br->br_path = add->path; /* set first, path_get() later */ + spin_lock_init(&br->br_dykey_lock); + au_br_count_init(br); + br->br_id = au_new_br_id(sb); + AuDebugOn(br->br_id < 0); + + /* always, regardless the given option */ + err = au_dr_br_init(sb, br, &add->path); + if (unlikely(err)) + goto out_err; + + if (au_br_writable(add->perm)) { + err = au_wbr_init(br, sb, add->perm); + if (unlikely(err)) + goto out_err; + } + + if (au_opt_test(au_mntflags(sb), XINO)) { + brbase = au_sbr(sb, 0); + xf = au_xino_file(brbase); + AuDebugOn(!xf); + h_inode = d_inode(add->path.dentry); + err = au_xino_init_br(sb, br, h_inode->i_ino, &xf->f_path); + if (unlikely(err)) { + AuDebugOn(au_xino_file(br)); + goto out_err; + } + } + + sysaufs_br_init(br); + path_get(&br->br_path); + goto out; /* success */ + +out_err: + memset(&br->br_path, 0, sizeof(br->br_path)); +out: + return err; +} + +static void au_br_do_add_brp(struct au_sbinfo *sbinfo, aufs_bindex_t bindex, + struct au_branch *br, aufs_bindex_t bbot, + aufs_bindex_t amount) +{ + struct au_branch **brp; + + AuRwMustWriteLock(&sbinfo->si_rwsem); + + brp = sbinfo->si_branch + bindex; + memmove(brp + 1, brp, sizeof(*brp) * amount); + *brp = br; + sbinfo->si_bbot++; + if (unlikely(bbot < 0)) + sbinfo->si_bbot = 0; +} + +static void au_br_do_add_hdp(struct au_dinfo *dinfo, aufs_bindex_t bindex, + aufs_bindex_t bbot, aufs_bindex_t amount) +{ + struct au_hdentry *hdp; + + AuRwMustWriteLock(&dinfo->di_rwsem); + + hdp = au_hdentry(dinfo, bindex); + memmove(hdp + 1, hdp, sizeof(*hdp) * amount); + au_h_dentry_init(hdp); + dinfo->di_bbot++; + if (unlikely(bbot < 0)) + dinfo->di_btop = 0; +} + +static void au_br_do_add_hip(struct au_iinfo *iinfo, aufs_bindex_t bindex, + aufs_bindex_t bbot, aufs_bindex_t amount) +{ + struct au_hinode *hip; + + AuRwMustWriteLock(&iinfo->ii_rwsem); + + hip = au_hinode(iinfo, bindex); + memmove(hip + 1, hip, sizeof(*hip) * amount); + au_hinode_init(hip); + iinfo->ii_bbot++; + if (unlikely(bbot < 0)) + iinfo->ii_btop = 0; +} + +static void au_br_do_add(struct super_block *sb, struct au_branch *br, + aufs_bindex_t bindex) +{ + struct dentry *root, *h_dentry; + struct inode *root_inode, *h_inode; + aufs_bindex_t bbot, amount; + + root = sb->s_root; + root_inode = d_inode(root); + bbot = au_sbbot(sb); + amount = bbot + 1 - bindex; + h_dentry = au_br_dentry(br); + au_sbilist_lock(); + au_br_do_add_brp(au_sbi(sb), bindex, br, bbot, amount); + au_br_do_add_hdp(au_di(root), bindex, bbot, amount); + au_br_do_add_hip(au_ii(root_inode), bindex, bbot, amount); + au_set_h_dptr(root, bindex, dget(h_dentry)); + h_inode = d_inode(h_dentry); + au_set_h_iptr(root_inode, bindex, au_igrab(h_inode), /*flags*/0); + au_sbilist_unlock(); +} + +int au_br_add(struct super_block *sb, struct au_opt_add *add, int remount) +{ + int err; + aufs_bindex_t bbot, add_bindex; + struct dentry *root, *h_dentry; + struct inode *root_inode; + struct au_branch *add_branch; + struct file *xf; + + root = sb->s_root; + root_inode = d_inode(root); + IMustLock(root_inode); + IiMustWriteLock(root_inode); + err = test_add(sb, add, remount); + if (unlikely(err < 0)) + goto out; + if (err) { + err = 0; + goto out; /* success */ + } + + bbot = au_sbbot(sb); + add_branch = au_br_alloc(sb, bbot + 2, add->perm); + err = PTR_ERR(add_branch); + if (IS_ERR(add_branch)) + goto out; + + err = au_br_init(add_branch, sb, add); + if (unlikely(err)) { + au_br_do_free(add_branch); + goto out; + } + + add_bindex = add->bindex; + sysaufs_brs_del(sb, add_bindex); /* remove successors */ + au_br_do_add(sb, add_branch, add_bindex); + sysaufs_brs_add(sb, add_bindex); /* append successors */ + dbgaufs_brs_add(sb, add_bindex, /*topdown*/0); /* rename successors */ + + h_dentry = add->path.dentry; + if (!add_bindex) { + au_cpup_attr_all(root_inode, /*force*/1); + sb->s_maxbytes = h_dentry->d_sb->s_maxbytes; + } else + au_add_nlink(root_inode, d_inode(h_dentry)); + + /* + * this test/set prevents aufs from handling unnecessary notify events + * of xino files, in case of re-adding a writable branch which was + * once detached from aufs. + */ + if (au_xino_brid(sb) < 0 + && au_br_writable(add_branch->br_perm) + && !au_test_fs_bad_xino(h_dentry->d_sb)) { + xf = au_xino_file(add_branch); + if (xf && xf->f_path.dentry->d_parent == h_dentry) + au_xino_brid_set(sb, add_branch->br_id); + } + +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +static unsigned long long au_farray_cb(struct super_block *sb, void *a, + unsigned long long max __maybe_unused, + void *arg) +{ + unsigned long long n; + struct file **p, *f; + struct hlist_bl_head *files; + struct hlist_bl_node *pos; + struct au_finfo *finfo; + + n = 0; + p = a; + files = &au_sbi(sb)->si_files; + hlist_bl_lock(files); + hlist_bl_for_each_entry(finfo, pos, files, fi_hlist) { + f = finfo->fi_file; + if (file_count(f) + && !special_file(file_inode(f)->i_mode)) { + get_file(f); + *p++ = f; + n++; + AuDebugOn(n > max); + } + } + hlist_bl_unlock(files); + + return n; +} + +static struct file **au_farray_alloc(struct super_block *sb, + unsigned long long *max) +{ + *max = au_nfiles(sb); + return au_array_alloc(max, au_farray_cb, sb, /*arg*/NULL); +} + +static void au_farray_free(struct file **a, unsigned long long max) +{ + unsigned long long ull; + + for (ull = 0; ull < max; ull++) + if (a[ull]) + fput(a[ull]); + kvfree(a); +} + +/* ---------------------------------------------------------------------- */ + +/* + * delete a branch + */ + +/* to show the line number, do not make it inlined function */ +#define AuVerbose(do_info, fmt, ...) do { \ + if (do_info) \ + pr_info(fmt, ##__VA_ARGS__); \ +} while (0) + +static int au_test_ibusy(struct inode *inode, aufs_bindex_t btop, + aufs_bindex_t bbot) +{ + return (inode && !S_ISDIR(inode->i_mode)) || btop == bbot; +} + +static int au_test_dbusy(struct dentry *dentry, aufs_bindex_t btop, + aufs_bindex_t bbot) +{ + return au_test_ibusy(d_inode(dentry), btop, bbot); +} + +/* + * test if the branch is deletable or not. + */ +static int test_dentry_busy(struct dentry *root, aufs_bindex_t bindex, + unsigned int sigen, const unsigned int verbose) +{ + int err, i, j, ndentry; + aufs_bindex_t btop, bbot; + struct au_dcsub_pages dpages; + struct au_dpage *dpage; + struct dentry *d; + + err = au_dpages_init(&dpages, GFP_NOFS); + if (unlikely(err)) + goto out; + err = au_dcsub_pages(&dpages, root, NULL, NULL); + if (unlikely(err)) + goto out_dpages; + + for (i = 0; !err && i < dpages.ndpage; i++) { + dpage = dpages.dpages + i; + ndentry = dpage->ndentry; + for (j = 0; !err && j < ndentry; j++) { + d = dpage->dentries[j]; + AuDebugOn(au_dcount(d) <= 0); + if (!au_digen_test(d, sigen)) { + di_read_lock_child(d, AuLock_IR); + if (unlikely(au_dbrange_test(d))) { + di_read_unlock(d, AuLock_IR); + continue; + } + } else { + di_write_lock_child(d); + if (unlikely(au_dbrange_test(d))) { + di_write_unlock(d); + continue; + } + err = au_reval_dpath(d, sigen); + if (!err) + di_downgrade_lock(d, AuLock_IR); + else { + di_write_unlock(d); + break; + } + } + + /* AuDbgDentry(d); */ + btop = au_dbtop(d); + bbot = au_dbbot(d); + if (btop <= bindex + && bindex <= bbot + && au_h_dptr(d, bindex) + && au_test_dbusy(d, btop, bbot)) { + err = -EBUSY; + AuVerbose(verbose, "busy %pd\n", d); + AuDbgDentry(d); + } + di_read_unlock(d, AuLock_IR); + } + } + +out_dpages: + au_dpages_free(&dpages); +out: + return err; +} + +static int test_inode_busy(struct super_block *sb, aufs_bindex_t bindex, + unsigned int sigen, const unsigned int verbose) +{ + int err; + unsigned long long max, ull; + struct inode *i, **array; + aufs_bindex_t btop, bbot; + + array = au_iarray_alloc(sb, &max); + err = PTR_ERR(array); + if (IS_ERR(array)) + goto out; + + err = 0; + AuDbg("b%d\n", bindex); + for (ull = 0; !err && ull < max; ull++) { + i = array[ull]; + if (unlikely(!i)) + break; + if (i->i_ino == AUFS_ROOT_INO) + continue; + + /* AuDbgInode(i); */ + if (au_iigen(i, NULL) == sigen) + ii_read_lock_child(i); + else { + ii_write_lock_child(i); + err = au_refresh_hinode_self(i); + au_iigen_dec(i); + if (!err) + ii_downgrade_lock(i); + else { + ii_write_unlock(i); + break; + } + } + + btop = au_ibtop(i); + bbot = au_ibbot(i); + if (btop <= bindex + && bindex <= bbot + && au_h_iptr(i, bindex) + && au_test_ibusy(i, btop, bbot)) { + err = -EBUSY; + AuVerbose(verbose, "busy i%lu\n", i->i_ino); + AuDbgInode(i); + } + ii_read_unlock(i); + } + au_iarray_free(array, max); + +out: + return err; +} + +static int test_children_busy(struct dentry *root, aufs_bindex_t bindex, + const unsigned int verbose) +{ + int err; + unsigned int sigen; + + sigen = au_sigen(root->d_sb); + DiMustNoWaiters(root); + IiMustNoWaiters(d_inode(root)); + di_write_unlock(root); + err = test_dentry_busy(root, bindex, sigen, verbose); + if (!err) + err = test_inode_busy(root->d_sb, bindex, sigen, verbose); + di_write_lock_child(root); /* aufs_write_lock() calls ..._child() */ + + return err; +} + +static int test_dir_busy(struct file *file, aufs_bindex_t br_id, + struct file **to_free, int *idx) +{ + int err; + unsigned char matched, root; + aufs_bindex_t bindex, bbot; + struct au_fidir *fidir; + struct au_hfile *hfile; + + err = 0; + root = IS_ROOT(file->f_path.dentry); + if (root) { + get_file(file); + to_free[*idx] = file; + (*idx)++; + goto out; + } + + matched = 0; + fidir = au_fi(file)->fi_hdir; + AuDebugOn(!fidir); + bbot = au_fbbot_dir(file); + for (bindex = au_fbtop(file); bindex <= bbot; bindex++) { + hfile = fidir->fd_hfile + bindex; + if (!hfile->hf_file) + continue; + + if (hfile->hf_br->br_id == br_id) { + matched = 1; + break; + } + } + if (matched) + err = -EBUSY; + +out: + return err; +} + +static int test_file_busy(struct super_block *sb, aufs_bindex_t br_id, + struct file **to_free, int opened) +{ + int err, idx; + unsigned long long ull, max; + aufs_bindex_t btop; + struct file *file, **array; + struct dentry *root; + struct au_hfile *hfile; + + array = au_farray_alloc(sb, &max); + err = PTR_ERR(array); + if (IS_ERR(array)) + goto out; + + err = 0; + idx = 0; + root = sb->s_root; + di_write_unlock(root); + for (ull = 0; ull < max; ull++) { + file = array[ull]; + if (unlikely(!file)) + break; + + /* AuDbg("%pD\n", file); */ + fi_read_lock(file); + btop = au_fbtop(file); + if (!d_is_dir(file->f_path.dentry)) { + hfile = &au_fi(file)->fi_htop; + if (hfile->hf_br->br_id == br_id) + err = -EBUSY; + } else + err = test_dir_busy(file, br_id, to_free, &idx); + fi_read_unlock(file); + if (unlikely(err)) + break; + } + di_write_lock_child(root); + au_farray_free(array, max); + AuDebugOn(idx > opened); + +out: + return err; +} + +static void br_del_file(struct file **to_free, unsigned long long opened, + aufs_bindex_t br_id) +{ + unsigned long long ull; + aufs_bindex_t bindex, btop, bbot, bfound; + struct file *file; + struct au_fidir *fidir; + struct au_hfile *hfile; + + for (ull = 0; ull < opened; ull++) { + file = to_free[ull]; + if (unlikely(!file)) + break; + + /* AuDbg("%pD\n", file); */ + AuDebugOn(!d_is_dir(file->f_path.dentry)); + bfound = -1; + fidir = au_fi(file)->fi_hdir; + AuDebugOn(!fidir); + fi_write_lock(file); + btop = au_fbtop(file); + bbot = au_fbbot_dir(file); + for (bindex = btop; bindex <= bbot; bindex++) { + hfile = fidir->fd_hfile + bindex; + if (!hfile->hf_file) + continue; + + if (hfile->hf_br->br_id == br_id) { + bfound = bindex; + break; + } + } + AuDebugOn(bfound < 0); + au_set_h_fptr(file, bfound, NULL); + if (bfound == btop) { + for (btop++; btop <= bbot; btop++) + if (au_hf_dir(file, btop)) { + au_set_fbtop(file, btop); + break; + } + } + fi_write_unlock(file); + } +} + +static void au_br_do_del_brp(struct au_sbinfo *sbinfo, + const aufs_bindex_t bindex, + const aufs_bindex_t bbot) +{ + struct au_branch **brp, **p; + + AuRwMustWriteLock(&sbinfo->si_rwsem); + + brp = sbinfo->si_branch + bindex; + if (bindex < bbot) + memmove(brp, brp + 1, sizeof(*brp) * (bbot - bindex)); + sbinfo->si_branch[0 + bbot] = NULL; + sbinfo->si_bbot--; + + p = au_krealloc(sbinfo->si_branch, sizeof(*p) * bbot, AuGFP_SBILIST, + /*may_shrink*/1); + if (p) + sbinfo->si_branch = p; + /* harmless error */ +} + +static void au_br_do_del_hdp(struct au_dinfo *dinfo, const aufs_bindex_t bindex, + const aufs_bindex_t bbot) +{ + struct au_hdentry *hdp, *p; + + AuRwMustWriteLock(&dinfo->di_rwsem); + + hdp = au_hdentry(dinfo, bindex); + if (bindex < bbot) + memmove(hdp, hdp + 1, sizeof(*hdp) * (bbot - bindex)); + /* au_h_dentry_init(au_hdentry(dinfo, bbot); */ + dinfo->di_bbot--; + + p = au_krealloc(dinfo->di_hdentry, sizeof(*p) * bbot, AuGFP_SBILIST, + /*may_shrink*/1); + if (p) + dinfo->di_hdentry = p; + /* harmless error */ +} + +static void au_br_do_del_hip(struct au_iinfo *iinfo, const aufs_bindex_t bindex, + const aufs_bindex_t bbot) +{ + struct au_hinode *hip, *p; + + AuRwMustWriteLock(&iinfo->ii_rwsem); + + hip = au_hinode(iinfo, bindex); + if (bindex < bbot) + memmove(hip, hip + 1, sizeof(*hip) * (bbot - bindex)); + /* au_hinode_init(au_hinode(iinfo, bbot)); */ + iinfo->ii_bbot--; + + p = au_krealloc(iinfo->ii_hinode, sizeof(*p) * bbot, AuGFP_SBILIST, + /*may_shrink*/1); + if (p) + iinfo->ii_hinode = p; + /* harmless error */ +} + +static void au_br_do_del(struct super_block *sb, aufs_bindex_t bindex, + struct au_branch *br) +{ + aufs_bindex_t bbot; + struct au_sbinfo *sbinfo; + struct dentry *root, *h_root; + struct inode *inode, *h_inode; + struct au_hinode *hinode; + + SiMustWriteLock(sb); + + root = sb->s_root; + inode = d_inode(root); + sbinfo = au_sbi(sb); + bbot = sbinfo->si_bbot; + + h_root = au_h_dptr(root, bindex); + hinode = au_hi(inode, bindex); + h_inode = au_igrab(hinode->hi_inode); + au_hiput(hinode); + + au_sbilist_lock(); + au_br_do_del_brp(sbinfo, bindex, bbot); + au_br_do_del_hdp(au_di(root), bindex, bbot); + au_br_do_del_hip(au_ii(inode), bindex, bbot); + au_sbilist_unlock(); + + /* ignore an error */ + au_dr_br_fin(sb, br); /* always, regardless the mount option */ + + dput(h_root); + iput(h_inode); + au_br_do_free(br); +} + +static unsigned long long empty_cb(struct super_block *sb, void *array, + unsigned long long max, void *arg) +{ + return max; +} + +int au_br_del(struct super_block *sb, struct au_opt_del *del, int remount) +{ + int err, rerr, i; + unsigned long long opened; + unsigned int mnt_flags; + aufs_bindex_t bindex, bbot, br_id; + unsigned char do_wh, verbose; + struct au_branch *br; + struct au_wbr *wbr; + struct dentry *root; + struct file **to_free; + + err = 0; + opened = 0; + to_free = NULL; + root = sb->s_root; + bindex = au_find_dbindex(root, del->h_path.dentry); + if (bindex < 0) { + if (remount) + goto out; /* success */ + err = -ENOENT; + pr_err("%s no such branch\n", del->pathname); + goto out; + } + AuDbg("bindex b%d\n", bindex); + + err = -EBUSY; + mnt_flags = au_mntflags(sb); + verbose = !!au_opt_test(mnt_flags, VERBOSE); + bbot = au_sbbot(sb); + if (unlikely(!bbot)) { + AuVerbose(verbose, "no more branches left\n"); + goto out; + } + br = au_sbr(sb, bindex); + AuDebugOn(!path_equal(&br->br_path, &del->h_path)); + + br_id = br->br_id; + opened = au_br_count(br); + if (unlikely(opened)) { + to_free = au_array_alloc(&opened, empty_cb, sb, NULL); + err = PTR_ERR(to_free); + if (IS_ERR(to_free)) + goto out; + + err = test_file_busy(sb, br_id, to_free, opened); + if (unlikely(err)) { + AuVerbose(verbose, "%llu file(s) opened\n", opened); + goto out; + } + } + + wbr = br->br_wbr; + do_wh = wbr && (wbr->wbr_whbase || wbr->wbr_plink || wbr->wbr_orph); + if (do_wh) { + /* instead of WbrWhMustWriteLock(wbr) */ + SiMustWriteLock(sb); + for (i = 0; i < AuBrWh_Last; i++) { + dput(wbr->wbr_wh[i]); + wbr->wbr_wh[i] = NULL; + } + } + + err = test_children_busy(root, bindex, verbose); + if (unlikely(err)) { + if (do_wh) + goto out_wh; + goto out; + } + + err = 0; + if (to_free) { + /* + * now we confirmed the branch is deletable. + * let's free the remaining opened dirs on the branch. + */ + di_write_unlock(root); + br_del_file(to_free, opened, br_id); + di_write_lock_child(root); + } + + sysaufs_brs_del(sb, bindex); /* remove successors */ + dbgaufs_xino_del(br); /* remove one */ + au_br_do_del(sb, bindex, br); + sysaufs_brs_add(sb, bindex); /* append successors */ + dbgaufs_brs_add(sb, bindex, /*topdown*/1); /* rename successors */ + + if (!bindex) { + au_cpup_attr_all(d_inode(root), /*force*/1); + sb->s_maxbytes = au_sbr_sb(sb, 0)->s_maxbytes; + } else + au_sub_nlink(d_inode(root), d_inode(del->h_path.dentry)); + if (au_opt_test(mnt_flags, PLINK)) + au_plink_half_refresh(sb, br_id); + + if (au_xino_brid(sb) == br_id) + au_xino_brid_set(sb, -1); + goto out; /* success */ + +out_wh: + /* revert */ + rerr = au_br_init_wh(sb, br, br->br_perm); + if (rerr) + pr_warn("failed re-creating base whiteout, %s. (%d)\n", + del->pathname, rerr); +out: + if (to_free) + au_farray_free(to_free, opened); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int au_ibusy(struct super_block *sb, struct aufs_ibusy __user *arg) +{ + int err; + aufs_bindex_t btop, bbot; + struct aufs_ibusy ibusy; + struct inode *inode, *h_inode; + + err = -EPERM; + if (unlikely(!capable(CAP_SYS_ADMIN))) + goto out; + + err = copy_from_user(&ibusy, arg, sizeof(ibusy)); + if (!err) + err = !access_ok(VERIFY_WRITE, &arg->h_ino, sizeof(arg->h_ino)); + if (unlikely(err)) { + err = -EFAULT; + AuTraceErr(err); + goto out; + } + + err = -EINVAL; + si_read_lock(sb, AuLock_FLUSH); + if (unlikely(ibusy.bindex < 0 || ibusy.bindex > au_sbbot(sb))) + goto out_unlock; + + err = 0; + ibusy.h_ino = 0; /* invalid */ + inode = ilookup(sb, ibusy.ino); + if (!inode + || inode->i_ino == AUFS_ROOT_INO + || au_is_bad_inode(inode)) + goto out_unlock; + + ii_read_lock_child(inode); + btop = au_ibtop(inode); + bbot = au_ibbot(inode); + if (btop <= ibusy.bindex && ibusy.bindex <= bbot) { + h_inode = au_h_iptr(inode, ibusy.bindex); + if (h_inode && au_test_ibusy(inode, btop, bbot)) + ibusy.h_ino = h_inode->i_ino; + } + ii_read_unlock(inode); + iput(inode); + +out_unlock: + si_read_unlock(sb); + if (!err) { + err = __put_user(ibusy.h_ino, &arg->h_ino); + if (unlikely(err)) { + err = -EFAULT; + AuTraceErr(err); + } + } +out: + return err; +} + +long au_ibusy_ioctl(struct file *file, unsigned long arg) +{ + return au_ibusy(file->f_path.dentry->d_sb, (void __user *)arg); +} + +#ifdef CONFIG_COMPAT +long au_ibusy_compat_ioctl(struct file *file, unsigned long arg) +{ + return au_ibusy(file->f_path.dentry->d_sb, compat_ptr(arg)); +} +#endif + +/* ---------------------------------------------------------------------- */ + +/* + * change a branch permission + */ + +static void au_warn_ima(void) +{ +#ifdef CONFIG_IMA + /* since it doesn't support mark_files_ro() */ + AuWarn1("RW -> RO makes IMA to produce wrong message\n"); +#endif +} + +static int do_need_sigen_inc(int a, int b) +{ + return au_br_whable(a) && !au_br_whable(b); +} + +static int need_sigen_inc(int old, int new) +{ + return do_need_sigen_inc(old, new) + || do_need_sigen_inc(new, old); +} + +static int au_br_mod_files_ro(struct super_block *sb, aufs_bindex_t bindex) +{ + int err, do_warn; + unsigned int mnt_flags; + unsigned long long ull, max; + aufs_bindex_t br_id; + unsigned char verbose, writer; + struct file *file, *hf, **array; + struct au_hfile *hfile; + + mnt_flags = au_mntflags(sb); + verbose = !!au_opt_test(mnt_flags, VERBOSE); + + array = au_farray_alloc(sb, &max); + err = PTR_ERR(array); + if (IS_ERR(array)) + goto out; + + do_warn = 0; + br_id = au_sbr_id(sb, bindex); + for (ull = 0; ull < max; ull++) { + file = array[ull]; + if (unlikely(!file)) + break; + + /* AuDbg("%pD\n", file); */ + fi_read_lock(file); + if (unlikely(au_test_mmapped(file))) { + err = -EBUSY; + AuVerbose(verbose, "mmapped %pD\n", file); + AuDbgFile(file); + FiMustNoWaiters(file); + fi_read_unlock(file); + goto out_array; + } + + hfile = &au_fi(file)->fi_htop; + hf = hfile->hf_file; + if (!d_is_reg(file->f_path.dentry) + || !(file->f_mode & FMODE_WRITE) + || hfile->hf_br->br_id != br_id + || !(hf->f_mode & FMODE_WRITE)) + array[ull] = NULL; + else { + do_warn = 1; + get_file(file); + } + + FiMustNoWaiters(file); + fi_read_unlock(file); + fput(file); + } + + err = 0; + if (do_warn) + au_warn_ima(); + + for (ull = 0; ull < max; ull++) { + file = array[ull]; + if (!file) + continue; + + /* todo: already flushed? */ + /* + * fs/super.c:mark_files_ro() is gone, but aufs keeps its + * approach which resets f_mode and calls mnt_drop_write() and + * file_release_write() for each file, because the branch + * attribute in aufs world is totally different from the native + * fs rw/ro mode. + */ + /* fi_read_lock(file); */ + hfile = &au_fi(file)->fi_htop; + hf = hfile->hf_file; + /* fi_read_unlock(file); */ + spin_lock(&hf->f_lock); + writer = !!(hf->f_mode & FMODE_WRITER); + hf->f_mode &= ~(FMODE_WRITE | FMODE_WRITER); + spin_unlock(&hf->f_lock); + if (writer) { + put_write_access(file_inode(hf)); + __mnt_drop_write(hf->f_path.mnt); + } + } + +out_array: + au_farray_free(array, max); +out: + AuTraceErr(err); + return err; +} + +int au_br_mod(struct super_block *sb, struct au_opt_mod *mod, int remount, + int *do_refresh) +{ + int err, rerr; + aufs_bindex_t bindex; + struct dentry *root; + struct au_branch *br; + struct au_br_fhsm *bf; + + root = sb->s_root; + bindex = au_find_dbindex(root, mod->h_root); + if (bindex < 0) { + if (remount) + return 0; /* success */ + err = -ENOENT; + pr_err("%s no such branch\n", mod->path); + goto out; + } + AuDbg("bindex b%d\n", bindex); + + err = test_br(d_inode(mod->h_root), mod->perm, mod->path); + if (unlikely(err)) + goto out; + + br = au_sbr(sb, bindex); + AuDebugOn(mod->h_root != au_br_dentry(br)); + if (br->br_perm == mod->perm) + return 0; /* success */ + + /* pre-allocate for non-fhsm --> fhsm */ + bf = NULL; + if (!au_br_fhsm(br->br_perm) && au_br_fhsm(mod->perm)) { + err = au_fhsm_br_alloc(br); + if (unlikely(err)) + goto out; + bf = br->br_fhsm; + br->br_fhsm = NULL; + } + + if (au_br_writable(br->br_perm)) { + /* remove whiteout base */ + err = au_br_init_wh(sb, br, mod->perm); + if (unlikely(err)) + goto out_bf; + + if (!au_br_writable(mod->perm)) { + /* rw --> ro, file might be mmapped */ + DiMustNoWaiters(root); + IiMustNoWaiters(d_inode(root)); + di_write_unlock(root); + err = au_br_mod_files_ro(sb, bindex); + /* aufs_write_lock() calls ..._child() */ + di_write_lock_child(root); + + if (unlikely(err)) { + rerr = -ENOMEM; + br->br_wbr = kzalloc(sizeof(*br->br_wbr), + GFP_NOFS); + if (br->br_wbr) + rerr = au_wbr_init(br, sb, br->br_perm); + if (unlikely(rerr)) { + AuIOErr("nested error %d (%d)\n", + rerr, err); + br->br_perm = mod->perm; + } + } + } + } else if (au_br_writable(mod->perm)) { + /* ro --> rw */ + err = -ENOMEM; + br->br_wbr = kzalloc(sizeof(*br->br_wbr), GFP_NOFS); + if (br->br_wbr) { + err = au_wbr_init(br, sb, mod->perm); + if (unlikely(err)) { + kfree(br->br_wbr); + br->br_wbr = NULL; + } + } + } + if (unlikely(err)) + goto out_bf; + + if (au_br_fhsm(br->br_perm)) { + if (!au_br_fhsm(mod->perm)) { + /* fhsm --> non-fhsm */ + au_br_fhsm_fin(br->br_fhsm); + kfree(br->br_fhsm); + br->br_fhsm = NULL; + } + } else if (au_br_fhsm(mod->perm)) + /* non-fhsm --> fhsm */ + br->br_fhsm = bf; + + *do_refresh |= need_sigen_inc(br->br_perm, mod->perm); + br->br_perm = mod->perm; + goto out; /* success */ + +out_bf: + kfree(bf); +out: + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +int au_br_stfs(struct au_branch *br, struct aufs_stfs *stfs) +{ + int err; + struct kstatfs kstfs; + + err = vfs_statfs(&br->br_path, &kstfs); + if (!err) { + stfs->f_blocks = kstfs.f_blocks; + stfs->f_bavail = kstfs.f_bavail; + stfs->f_files = kstfs.f_files; + stfs->f_ffree = kstfs.f_ffree; + } + + return err; +} diff --git a/fs/aufs/branch.h b/fs/aufs/branch.h new file mode 100644 index 00000000000..4717a1691eb --- /dev/null +++ b/fs/aufs/branch.h @@ -0,0 +1,374 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * branch filesystems and xino for them + */ + +#ifndef __AUFS_BRANCH_H__ +#define __AUFS_BRANCH_H__ + +#ifdef __KERNEL__ + +#include +#include "dirren.h" +#include "dynop.h" +#include "rwsem.h" +#include "super.h" + +/* ---------------------------------------------------------------------- */ + +/* a xino file */ +struct au_xino { + struct file *xi_file; + struct { + spinlock_t spin; + ino_t *array; + int total; + /* reserved for future use */ + /* unsigned long *bitmap; */ + wait_queue_head_t wqh; + } xi_nondir; + + atomic_t xi_truncating; + + struct kref xi_kref; + + /* todo: make xino files an array to support huge inode number */ +}; + +/* File-based Hierarchical Storage Management */ +struct au_br_fhsm { +#ifdef CONFIG_AUFS_FHSM + struct mutex bf_lock; + unsigned long bf_jiffy; + struct aufs_stfs bf_stfs; + int bf_readable; +#endif +}; + +/* members for writable branch only */ +enum {AuBrWh_BASE, AuBrWh_PLINK, AuBrWh_ORPH, AuBrWh_Last}; +struct au_wbr { + struct au_rwsem wbr_wh_rwsem; + struct dentry *wbr_wh[AuBrWh_Last]; + atomic_t wbr_wh_running; +#define wbr_whbase wbr_wh[AuBrWh_BASE] /* whiteout base */ +#define wbr_plink wbr_wh[AuBrWh_PLINK] /* pseudo-link dir */ +#define wbr_orph wbr_wh[AuBrWh_ORPH] /* dir for orphans */ + + /* mfs mode */ + unsigned long long wbr_bytes; +}; + +/* ext2 has 3 types of operations at least, ext3 has 4 */ +#define AuBrDynOp (AuDyLast * 4) + +#ifdef CONFIG_AUFS_HFSNOTIFY +/* support for asynchronous destruction */ +struct au_br_hfsnotify { + struct fsnotify_group *hfsn_group; +}; +#endif + +/* sysfs entries */ +struct au_brsysfs { + char name[16]; + struct attribute attr; +}; + +enum { + AuBrSysfs_BR, + AuBrSysfs_BRID, + AuBrSysfs_Last +}; + +/* protected by superblock rwsem */ +struct au_branch { + struct au_xino *br_xino; + + aufs_bindex_t br_id; + + int br_perm; + struct path br_path; + spinlock_t br_dykey_lock; + struct au_dykey *br_dykey[AuBrDynOp]; + struct percpu_counter br_count; + + struct au_wbr *br_wbr; + struct au_br_fhsm *br_fhsm; + +#ifdef CONFIG_AUFS_HFSNOTIFY + struct au_br_hfsnotify *br_hfsn; +#endif + +#ifdef CONFIG_SYSFS + /* entries under sysfs per mount-point */ + struct au_brsysfs br_sysfs[AuBrSysfs_Last]; +#endif + +#ifdef CONFIG_DEBUG_FS + struct dentry *br_dbgaufs; /* xino */ +#endif + + struct au_dr_br br_dirren; +}; + +/* ---------------------------------------------------------------------- */ + +static inline struct vfsmount *au_br_mnt(struct au_branch *br) +{ + return br->br_path.mnt; +} + +static inline struct dentry *au_br_dentry(struct au_branch *br) +{ + return br->br_path.dentry; +} + +static inline struct super_block *au_br_sb(struct au_branch *br) +{ + return au_br_mnt(br)->mnt_sb; +} + +static inline void au_br_get(struct au_branch *br) +{ + percpu_counter_inc(&br->br_count); +} + +static inline void au_br_put(struct au_branch *br) +{ + percpu_counter_dec(&br->br_count); +} + +static inline s64 au_br_count(struct au_branch *br) +{ + return percpu_counter_sum(&br->br_count); +} + +static inline void au_br_count_init(struct au_branch *br) +{ + percpu_counter_init(&br->br_count, 0, GFP_NOFS); +} + +static inline void au_br_count_fin(struct au_branch *br) +{ + percpu_counter_destroy(&br->br_count); +} + +static inline int au_br_rdonly(struct au_branch *br) +{ + return (sb_rdonly(au_br_sb(br)) + || !au_br_writable(br->br_perm)) + ? -EROFS : 0; +} + +static inline int au_br_hnotifyable(int brperm __maybe_unused) +{ +#ifdef CONFIG_AUFS_HNOTIFY + return !(brperm & AuBrPerm_RR); +#else + return 0; +#endif +} + +static inline int au_br_test_oflag(int oflag, struct au_branch *br) +{ + int err, exec_flag; + + err = 0; + exec_flag = oflag & __FMODE_EXEC; + if (unlikely(exec_flag && path_noexec(&br->br_path))) + err = -EACCES; + + return err; +} + +static inline void au_xino_get(struct au_branch *br) +{ + struct au_xino *xi; + + xi = br->br_xino; + if (xi) + kref_get(&xi->xi_kref); +} + +static inline int au_xino_count(struct au_branch *br) +{ + int v; + struct au_xino *xi; + + v = 0; + xi = br->br_xino; + if (xi) + v = kref_read(&xi->xi_kref); + + return v; +} + +static inline struct file *au_xino_file(struct au_branch *br) +{ + struct au_xino *xi; + + xi = br->br_xino; + return xi ? xi->xi_file : NULL; +} + +/* ---------------------------------------------------------------------- */ + +/* branch.c */ +struct au_sbinfo; +void au_br_free(struct au_sbinfo *sinfo); +int au_br_index(struct super_block *sb, aufs_bindex_t br_id); +struct au_opt_add; +int au_br_add(struct super_block *sb, struct au_opt_add *add, int remount); +struct au_opt_del; +int au_br_del(struct super_block *sb, struct au_opt_del *del, int remount); +long au_ibusy_ioctl(struct file *file, unsigned long arg); +#ifdef CONFIG_COMPAT +long au_ibusy_compat_ioctl(struct file *file, unsigned long arg); +#endif +struct au_opt_mod; +int au_br_mod(struct super_block *sb, struct au_opt_mod *mod, int remount, + int *do_refresh); +struct aufs_stfs; +int au_br_stfs(struct au_branch *br, struct aufs_stfs *stfs); + +/* xino.c */ +static const loff_t au_loff_max = LLONG_MAX; + +struct file *au_xino_create(struct super_block *sb, char *fpath, int silent); +struct file *au_xino_create2(struct super_block *sb, struct path *base, + struct file *copy_src); + +int au_xino_read(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino, + ino_t *ino); +int au_xino_write(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino, + ino_t ino); +ssize_t xino_fread(vfs_readf_t func, struct file *file, void *buf, size_t size, + loff_t *pos); +ssize_t xino_fwrite(vfs_writef_t func, struct file *file, void *buf, + size_t size, loff_t *pos); + +int au_xib_trunc(struct super_block *sb); +int au_xino_trunc(struct super_block *sb, aufs_bindex_t bindex); + +struct au_xino *au_xino_alloc(void); +int au_xino_put(struct au_branch *br); +void au_xino_file_set(struct au_branch *br, struct file *file); + +struct au_opt_xino; +void au_xino_clr(struct super_block *sb); +int au_xino_set(struct super_block *sb, struct au_opt_xino *xiopt, int remount); +struct file *au_xino_def(struct super_block *sb); +int au_xino_init_br(struct super_block *sb, struct au_branch *br, ino_t hino, + struct path *base); + +ino_t au_xino_new_ino(struct super_block *sb); +void au_xino_delete_inode(struct inode *inode, const int unlinked); + +void au_xinondir_leave(struct super_block *sb, aufs_bindex_t bindex, + ino_t h_ino, int idx); +int au_xinondir_enter(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino, + int *idx); + +int au_xino_path(struct seq_file *seq, struct file *file); + +/* ---------------------------------------------------------------------- */ + +/* Superblock to branch */ +static inline +aufs_bindex_t au_sbr_id(struct super_block *sb, aufs_bindex_t bindex) +{ + return au_sbr(sb, bindex)->br_id; +} + +static inline +struct vfsmount *au_sbr_mnt(struct super_block *sb, aufs_bindex_t bindex) +{ + return au_br_mnt(au_sbr(sb, bindex)); +} + +static inline +struct super_block *au_sbr_sb(struct super_block *sb, aufs_bindex_t bindex) +{ + return au_br_sb(au_sbr(sb, bindex)); +} + +static inline void au_sbr_get(struct super_block *sb, aufs_bindex_t bindex) +{ + au_br_get(au_sbr(sb, bindex)); +} + +static inline void au_sbr_put(struct super_block *sb, aufs_bindex_t bindex) +{ + au_br_put(au_sbr(sb, bindex)); +} + +static inline int au_sbr_perm(struct super_block *sb, aufs_bindex_t bindex) +{ + return au_sbr(sb, bindex)->br_perm; +} + +static inline int au_sbr_whable(struct super_block *sb, aufs_bindex_t bindex) +{ + return au_br_whable(au_sbr_perm(sb, bindex)); +} + +/* ---------------------------------------------------------------------- */ + +#define wbr_wh_read_lock(wbr) au_rw_read_lock(&(wbr)->wbr_wh_rwsem) +#define wbr_wh_write_lock(wbr) au_rw_write_lock(&(wbr)->wbr_wh_rwsem) +#define wbr_wh_read_trylock(wbr) au_rw_read_trylock(&(wbr)->wbr_wh_rwsem) +#define wbr_wh_write_trylock(wbr) au_rw_write_trylock(&(wbr)->wbr_wh_rwsem) +/* +#define wbr_wh_read_trylock_nested(wbr) \ + au_rw_read_trylock_nested(&(wbr)->wbr_wh_rwsem) +#define wbr_wh_write_trylock_nested(wbr) \ + au_rw_write_trylock_nested(&(wbr)->wbr_wh_rwsem) +*/ + +#define wbr_wh_read_unlock(wbr) au_rw_read_unlock(&(wbr)->wbr_wh_rwsem) +#define wbr_wh_write_unlock(wbr) au_rw_write_unlock(&(wbr)->wbr_wh_rwsem) +#define wbr_wh_downgrade_lock(wbr) au_rw_dgrade_lock(&(wbr)->wbr_wh_rwsem) + +#define WbrWhMustNoWaiters(wbr) AuRwMustNoWaiters(&(wbr)->wbr_wh_rwsem) +#define WbrWhMustAnyLock(wbr) AuRwMustAnyLock(&(wbr)->wbr_wh_rwsem) +#define WbrWhMustWriteLock(wbr) AuRwMustWriteLock(&(wbr)->wbr_wh_rwsem) + +/* ---------------------------------------------------------------------- */ + +#ifdef CONFIG_AUFS_FHSM +static inline void au_br_fhsm_init(struct au_br_fhsm *brfhsm) +{ + mutex_init(&brfhsm->bf_lock); + brfhsm->bf_jiffy = 0; + brfhsm->bf_readable = 0; +} + +static inline void au_br_fhsm_fin(struct au_br_fhsm *brfhsm) +{ + mutex_destroy(&brfhsm->bf_lock); +} +#else +AuStubVoid(au_br_fhsm_init, struct au_br_fhsm *brfhsm) +AuStubVoid(au_br_fhsm_fin, struct au_br_fhsm *brfhsm) +#endif + +#endif /* __KERNEL__ */ +#endif /* __AUFS_BRANCH_H__ */ diff --git a/fs/aufs/conf.mk b/fs/aufs/conf.mk new file mode 100644 index 00000000000..12782f8e0f3 --- /dev/null +++ b/fs/aufs/conf.mk @@ -0,0 +1,40 @@ +# SPDX-License-Identifier: GPL-2.0 + +AuConfStr = CONFIG_AUFS_FS=${CONFIG_AUFS_FS} + +define AuConf +ifdef ${1} +AuConfStr += ${1}=${${1}} +endif +endef + +AuConfAll = BRANCH_MAX_127 BRANCH_MAX_511 BRANCH_MAX_1023 BRANCH_MAX_32767 \ + SBILIST \ + HNOTIFY HFSNOTIFY \ + EXPORT INO_T_64 \ + XATTR \ + FHSM \ + RDU \ + DIRREN \ + SHWH \ + BR_RAMFS \ + BR_FUSE POLL \ + BR_HFSPLUS \ + BDEV_LOOP \ + DEBUG MAGIC_SYSRQ +$(foreach i, ${AuConfAll}, \ + $(eval $(call AuConf,CONFIG_AUFS_${i}))) + +AuConfName = ${obj}/conf.str +${AuConfName}.tmp: FORCE + @echo ${AuConfStr} | tr ' ' '\n' | sed -e 's/^/"/' -e 's/$$/\\n"/' > $@ +${AuConfName}: ${AuConfName}.tmp + @diff -q $< $@ > /dev/null 2>&1 || { \ + echo ' GEN ' $@; \ + cp -p $< $@; \ + } +FORCE: +clean-files += ${AuConfName} ${AuConfName}.tmp +${obj}/sysfs.o: ${AuConfName} + +-include ${srctree}/${src}/conf_priv.mk diff --git a/fs/aufs/cpup.c b/fs/aufs/cpup.c new file mode 100644 index 00000000000..93d6496aaf6 --- /dev/null +++ b/fs/aufs/cpup.c @@ -0,0 +1,1441 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * copy-up functions, see wbr_policy.c for copy-down + */ + +#include +#include +#include +#include "aufs.h" + +void au_cpup_attr_flags(struct inode *dst, unsigned int iflags) +{ + const unsigned int mask = S_DEAD | S_SWAPFILE | S_PRIVATE + | S_NOATIME | S_NOCMTIME | S_AUTOMOUNT; + + BUILD_BUG_ON(sizeof(iflags) != sizeof(dst->i_flags)); + + dst->i_flags |= iflags & ~mask; + if (au_test_fs_notime(dst->i_sb)) + dst->i_flags |= S_NOATIME | S_NOCMTIME; +} + +void au_cpup_attr_timesizes(struct inode *inode) +{ + struct inode *h_inode; + + h_inode = au_h_iptr(inode, au_ibtop(inode)); + fsstack_copy_attr_times(inode, h_inode); + fsstack_copy_inode_size(inode, h_inode); +} + +void au_cpup_attr_nlink(struct inode *inode, int force) +{ + struct inode *h_inode; + struct super_block *sb; + aufs_bindex_t bindex, bbot; + + sb = inode->i_sb; + bindex = au_ibtop(inode); + h_inode = au_h_iptr(inode, bindex); + if (!force + && !S_ISDIR(h_inode->i_mode) + && au_opt_test(au_mntflags(sb), PLINK) + && au_plink_test(inode)) + return; + + /* + * 0 can happen in revalidating. + * h_inode->i_mutex may not be held here, but it is harmless since once + * i_nlink reaches 0, it will never become positive except O_TMPFILE + * case. + * todo: O_TMPFILE+linkat(AT_SYMLINK_FOLLOW) bypassing aufs may cause + * the incorrect link count. + */ + set_nlink(inode, h_inode->i_nlink); + + /* + * fewer nlink makes find(1) noisy, but larger nlink doesn't. + * it may includes whplink directory. + */ + if (S_ISDIR(h_inode->i_mode)) { + bbot = au_ibbot(inode); + for (bindex++; bindex <= bbot; bindex++) { + h_inode = au_h_iptr(inode, bindex); + if (h_inode) + au_add_nlink(inode, h_inode); + } + } +} + +void au_cpup_attr_changeable(struct inode *inode) +{ + struct inode *h_inode; + + h_inode = au_h_iptr(inode, au_ibtop(inode)); + inode->i_mode = h_inode->i_mode; + inode->i_uid = h_inode->i_uid; + inode->i_gid = h_inode->i_gid; + au_cpup_attr_timesizes(inode); + au_cpup_attr_flags(inode, h_inode->i_flags); +} + +void au_cpup_igen(struct inode *inode, struct inode *h_inode) +{ + struct au_iinfo *iinfo = au_ii(inode); + + IiMustWriteLock(inode); + + iinfo->ii_higen = h_inode->i_generation; + iinfo->ii_hsb1 = h_inode->i_sb; +} + +void au_cpup_attr_all(struct inode *inode, int force) +{ + struct inode *h_inode; + + h_inode = au_h_iptr(inode, au_ibtop(inode)); + au_cpup_attr_changeable(inode); + if (inode->i_nlink > 0) + au_cpup_attr_nlink(inode, force); + inode->i_rdev = h_inode->i_rdev; + inode->i_blkbits = h_inode->i_blkbits; + au_cpup_igen(inode, h_inode); +} + +/* ---------------------------------------------------------------------- */ + +/* Note: dt_dentry and dt_h_dentry are not dget/dput-ed */ + +/* keep the timestamps of the parent dir when cpup */ +void au_dtime_store(struct au_dtime *dt, struct dentry *dentry, + struct path *h_path) +{ + struct inode *h_inode; + + dt->dt_dentry = dentry; + dt->dt_h_path = *h_path; + h_inode = d_inode(h_path->dentry); + dt->dt_atime = h_inode->i_atime; + dt->dt_mtime = h_inode->i_mtime; + /* smp_mb(); */ +} + +void au_dtime_revert(struct au_dtime *dt) +{ + struct iattr attr; + int err; + + attr.ia_atime = dt->dt_atime; + attr.ia_mtime = dt->dt_mtime; + attr.ia_valid = ATTR_FORCE | ATTR_MTIME | ATTR_MTIME_SET + | ATTR_ATIME | ATTR_ATIME_SET; + + /* no delegation since this is a directory */ + err = vfsub_notify_change(&dt->dt_h_path, &attr, /*delegated*/NULL); + if (unlikely(err)) + pr_warn("restoring timestamps failed(%d). ignored\n", err); +} + +/* ---------------------------------------------------------------------- */ + +/* internal use only */ +struct au_cpup_reg_attr { + int valid; + struct kstat st; + unsigned int iflags; /* inode->i_flags */ +}; + +static noinline_for_stack +int cpup_iattr(struct dentry *dst, aufs_bindex_t bindex, struct dentry *h_src, + struct au_cpup_reg_attr *h_src_attr) +{ + int err, sbits, icex; + unsigned int mnt_flags; + unsigned char verbose; + struct iattr ia; + struct path h_path; + struct inode *h_isrc, *h_idst; + struct kstat *h_st; + struct au_branch *br; + + h_path.dentry = au_h_dptr(dst, bindex); + h_idst = d_inode(h_path.dentry); + br = au_sbr(dst->d_sb, bindex); + h_path.mnt = au_br_mnt(br); + h_isrc = d_inode(h_src); + ia.ia_valid = ATTR_FORCE | ATTR_UID | ATTR_GID + | ATTR_ATIME | ATTR_MTIME + | ATTR_ATIME_SET | ATTR_MTIME_SET; + if (h_src_attr && h_src_attr->valid) { + h_st = &h_src_attr->st; + ia.ia_uid = h_st->uid; + ia.ia_gid = h_st->gid; + ia.ia_atime = h_st->atime; + ia.ia_mtime = h_st->mtime; + if (h_idst->i_mode != h_st->mode + && !S_ISLNK(h_idst->i_mode)) { + ia.ia_valid |= ATTR_MODE; + ia.ia_mode = h_st->mode; + } + sbits = !!(h_st->mode & (S_ISUID | S_ISGID)); + au_cpup_attr_flags(h_idst, h_src_attr->iflags); + } else { + ia.ia_uid = h_isrc->i_uid; + ia.ia_gid = h_isrc->i_gid; + ia.ia_atime = h_isrc->i_atime; + ia.ia_mtime = h_isrc->i_mtime; + if (h_idst->i_mode != h_isrc->i_mode + && !S_ISLNK(h_idst->i_mode)) { + ia.ia_valid |= ATTR_MODE; + ia.ia_mode = h_isrc->i_mode; + } + sbits = !!(h_isrc->i_mode & (S_ISUID | S_ISGID)); + au_cpup_attr_flags(h_idst, h_isrc->i_flags); + } + /* no delegation since it is just created */ + err = vfsub_notify_change(&h_path, &ia, /*delegated*/NULL); + + /* is this nfs only? */ + if (!err && sbits && au_test_nfs(h_path.dentry->d_sb)) { + ia.ia_valid = ATTR_FORCE | ATTR_MODE; + ia.ia_mode = h_isrc->i_mode; + err = vfsub_notify_change(&h_path, &ia, /*delegated*/NULL); + } + + icex = br->br_perm & AuBrAttr_ICEX; + if (!err) { + mnt_flags = au_mntflags(dst->d_sb); + verbose = !!au_opt_test(mnt_flags, VERBOSE); + err = au_cpup_xattr(h_path.dentry, h_src, icex, verbose); + } + + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int au_do_copy_file(struct file *dst, struct file *src, loff_t len, + char *buf, unsigned long blksize) +{ + int err; + size_t sz, rbytes, wbytes; + unsigned char all_zero; + char *p, *zp; + struct inode *h_inode; + /* reduce stack usage */ + struct iattr *ia; + + zp = page_address(ZERO_PAGE(0)); + if (unlikely(!zp)) + return -ENOMEM; /* possible? */ + + err = 0; + all_zero = 0; + while (len) { + AuDbg("len %lld\n", len); + sz = blksize; + if (len < blksize) + sz = len; + + rbytes = 0; + /* todo: signal_pending? */ + while (!rbytes || err == -EAGAIN || err == -EINTR) { + rbytes = vfsub_read_k(src, buf, sz, &src->f_pos); + err = rbytes; + } + if (unlikely(err < 0)) + break; + + all_zero = 0; + if (len >= rbytes && rbytes == blksize) + all_zero = !memcmp(buf, zp, rbytes); + if (!all_zero) { + wbytes = rbytes; + p = buf; + while (wbytes) { + size_t b; + + b = vfsub_write_k(dst, p, wbytes, &dst->f_pos); + err = b; + /* todo: signal_pending? */ + if (unlikely(err == -EAGAIN || err == -EINTR)) + continue; + if (unlikely(err < 0)) + break; + wbytes -= b; + p += b; + } + if (unlikely(err < 0)) + break; + } else { + loff_t res; + + AuLabel(hole); + res = vfsub_llseek(dst, rbytes, SEEK_CUR); + err = res; + if (unlikely(res < 0)) + break; + } + len -= rbytes; + err = 0; + } + + /* the last block may be a hole */ + if (!err && all_zero) { + AuLabel(last hole); + + err = 1; + if (au_test_nfs(dst->f_path.dentry->d_sb)) { + /* nfs requires this step to make last hole */ + /* is this only nfs? */ + do { + /* todo: signal_pending? */ + err = vfsub_write_k(dst, "\0", 1, &dst->f_pos); + } while (err == -EAGAIN || err == -EINTR); + if (err == 1) + dst->f_pos--; + } + + if (err == 1) { + ia = (void *)buf; + ia->ia_size = dst->f_pos; + ia->ia_valid = ATTR_SIZE | ATTR_FILE; + ia->ia_file = dst; + h_inode = file_inode(dst); + inode_lock_nested(h_inode, AuLsc_I_CHILD2); + /* no delegation since it is just created */ + err = vfsub_notify_change(&dst->f_path, ia, + /*delegated*/NULL); + inode_unlock(h_inode); + } + } + + return err; +} + +int au_copy_file(struct file *dst, struct file *src, loff_t len) +{ + int err; + unsigned long blksize; + unsigned char do_kfree; + char *buf; + + err = -ENOMEM; + blksize = dst->f_path.dentry->d_sb->s_blocksize; + if (!blksize || PAGE_SIZE < blksize) + blksize = PAGE_SIZE; + AuDbg("blksize %lu\n", blksize); + do_kfree = (blksize != PAGE_SIZE && blksize >= sizeof(struct iattr *)); + if (do_kfree) + buf = kmalloc(blksize, GFP_NOFS); + else + buf = (void *)__get_free_page(GFP_NOFS); + if (unlikely(!buf)) + goto out; + + if (len > (1 << 22)) + AuDbg("copying a large file %lld\n", (long long)len); + + src->f_pos = 0; + dst->f_pos = 0; + err = au_do_copy_file(dst, src, len, buf, blksize); + if (do_kfree) + kfree(buf); + else + free_page((unsigned long)buf); + +out: + return err; +} + +static int au_do_copy(struct file *dst, struct file *src, loff_t len) +{ + int err; + struct super_block *h_src_sb; + struct inode *h_src_inode; + + h_src_inode = file_inode(src); + h_src_sb = h_src_inode->i_sb; + + /* XFS acquires inode_lock */ + if (!au_test_xfs(h_src_sb)) + err = au_copy_file(dst, src, len); + else { + inode_unlock_shared(h_src_inode); + err = au_copy_file(dst, src, len); + inode_lock_shared_nested(h_src_inode, AuLsc_I_CHILD); + } + + return err; +} + +static int au_clone_or_copy(struct file *dst, struct file *src, loff_t len) +{ + int err; + struct super_block *h_src_sb; + struct inode *h_src_inode; + + h_src_inode = file_inode(src); + h_src_sb = h_src_inode->i_sb; + if (h_src_sb != file_inode(dst)->i_sb + || !dst->f_op->clone_file_range) { + err = au_do_copy(dst, src, len); + goto out; + } + + if (!au_test_nfs(h_src_sb)) { + inode_unlock_shared(h_src_inode); + err = vfsub_clone_file_range(src, dst, len); + inode_lock_shared_nested(h_src_inode, AuLsc_I_CHILD); + } else + err = vfsub_clone_file_range(src, dst, len); + /* older XFS has a condition in cloning */ + if (unlikely(err != -EOPNOTSUPP)) + goto out; + + /* the backend fs on NFS may not support cloning */ + err = au_do_copy(dst, src, len); + +out: + AuTraceErr(err); + return err; +} + +/* + * to support a sparse file which is opened with O_APPEND, + * we need to close the file. + */ +static int au_cp_regular(struct au_cp_generic *cpg) +{ + int err, i; + enum { SRC, DST }; + struct { + aufs_bindex_t bindex; + unsigned int flags; + struct dentry *dentry; + int force_wr; + struct file *file; + void *label; + } *f, file[] = { + { + .bindex = cpg->bsrc, + .flags = O_RDONLY | O_NOATIME | O_LARGEFILE, + .label = &&out + }, + { + .bindex = cpg->bdst, + .flags = O_WRONLY | O_NOATIME | O_LARGEFILE, + .force_wr = !!au_ftest_cpup(cpg->flags, RWDST), + .label = &&out_src + } + }; + struct super_block *sb, *h_src_sb; + struct inode *h_src_inode; + struct task_struct *tsk = current; + + /* bsrc branch can be ro/rw. */ + sb = cpg->dentry->d_sb; + f = file; + for (i = 0; i < 2; i++, f++) { + f->dentry = au_h_dptr(cpg->dentry, f->bindex); + f->file = au_h_open(cpg->dentry, f->bindex, f->flags, + /*file*/NULL, f->force_wr); + err = PTR_ERR(f->file); + if (IS_ERR(f->file)) + goto *f->label; + } + + /* try stopping to update while we copyup */ + h_src_inode = d_inode(file[SRC].dentry); + h_src_sb = h_src_inode->i_sb; + if (!au_test_nfs(h_src_sb)) + IMustLock(h_src_inode); + err = au_clone_or_copy(file[DST].file, file[SRC].file, cpg->len); + + /* i wonder if we had O_NO_DELAY_FPUT flag */ + if (tsk->flags & PF_KTHREAD) + __fput_sync(file[DST].file); + else { + /* it happened actually */ + fput(file[DST].file); + /* + * too bad. + * we have to call both since we don't know which place the file + * was added to. + */ + task_work_run(); + flush_delayed_fput(); + } + au_sbr_put(sb, file[DST].bindex); + +out_src: + fput(file[SRC].file); + au_sbr_put(sb, file[SRC].bindex); +out: + return err; +} + +static int au_do_cpup_regular(struct au_cp_generic *cpg, + struct au_cpup_reg_attr *h_src_attr) +{ + int err, rerr; + loff_t l; + struct path h_path; + struct inode *h_src_inode, *h_dst_inode; + + err = 0; + h_src_inode = au_h_iptr(d_inode(cpg->dentry), cpg->bsrc); + l = i_size_read(h_src_inode); + if (cpg->len == -1 || l < cpg->len) + cpg->len = l; + if (cpg->len) { + /* try stopping to update while we are referencing */ + inode_lock_shared_nested(h_src_inode, AuLsc_I_CHILD); + au_pin_hdir_unlock(cpg->pin); + + h_path.dentry = au_h_dptr(cpg->dentry, cpg->bsrc); + h_path.mnt = au_sbr_mnt(cpg->dentry->d_sb, cpg->bsrc); + h_src_attr->iflags = h_src_inode->i_flags; + if (!au_test_nfs(h_src_inode->i_sb)) + err = vfsub_getattr(&h_path, &h_src_attr->st); + else { + inode_unlock_shared(h_src_inode); + err = vfsub_getattr(&h_path, &h_src_attr->st); + inode_lock_shared_nested(h_src_inode, AuLsc_I_CHILD); + } + if (unlikely(err)) { + inode_unlock_shared(h_src_inode); + goto out; + } + h_src_attr->valid = 1; + if (!au_test_nfs(h_src_inode->i_sb)) { + err = au_cp_regular(cpg); + inode_unlock_shared(h_src_inode); + } else { + inode_unlock_shared(h_src_inode); + err = au_cp_regular(cpg); + } + rerr = au_pin_hdir_relock(cpg->pin); + if (!err && rerr) + err = rerr; + } + if (!err && (h_src_inode->i_state & I_LINKABLE)) { + h_path.dentry = au_h_dptr(cpg->dentry, cpg->bdst); + h_dst_inode = d_inode(h_path.dentry); + spin_lock(&h_dst_inode->i_lock); + h_dst_inode->i_state |= I_LINKABLE; + spin_unlock(&h_dst_inode->i_lock); + } + +out: + return err; +} + +static int au_do_cpup_symlink(struct path *h_path, struct dentry *h_src, + struct inode *h_dir) +{ + int err, symlen; + mm_segment_t old_fs; + union { + char *k; + char __user *u; + } sym; + + err = -ENOMEM; + sym.k = (void *)__get_free_page(GFP_NOFS); + if (unlikely(!sym.k)) + goto out; + + /* unnecessary to support mmap_sem since symlink is not mmap-able */ + old_fs = get_fs(); + set_fs(KERNEL_DS); + symlen = vfs_readlink(h_src, sym.u, PATH_MAX); + err = symlen; + set_fs(old_fs); + + if (symlen > 0) { + sym.k[symlen] = 0; + err = vfsub_symlink(h_dir, h_path, sym.k); + } + free_page((unsigned long)sym.k); + +out: + return err; +} + +/* + * regardless 'acl' option, reset all ACL. + * All ACL will be copied up later from the original entry on the lower branch. + */ +static int au_reset_acl(struct inode *h_dir, struct path *h_path, umode_t mode) +{ + int err; + struct dentry *h_dentry; + struct inode *h_inode; + + h_dentry = h_path->dentry; + h_inode = d_inode(h_dentry); + /* forget_all_cached_acls(h_inode)); */ + err = vfsub_removexattr(h_dentry, XATTR_NAME_POSIX_ACL_ACCESS); + AuTraceErr(err); + if (err == -EOPNOTSUPP) + err = 0; + if (!err) + err = vfsub_acl_chmod(h_inode, mode); + + AuTraceErr(err); + return err; +} + +static int au_do_cpup_dir(struct au_cp_generic *cpg, struct dentry *dst_parent, + struct inode *h_dir, struct path *h_path) +{ + int err; + struct inode *dir, *inode; + + err = vfsub_removexattr(h_path->dentry, XATTR_NAME_POSIX_ACL_DEFAULT); + AuTraceErr(err); + if (err == -EOPNOTSUPP) + err = 0; + if (unlikely(err)) + goto out; + + /* + * strange behaviour from the users view, + * particularry setattr case + */ + dir = d_inode(dst_parent); + if (au_ibtop(dir) == cpg->bdst) + au_cpup_attr_nlink(dir, /*force*/1); + inode = d_inode(cpg->dentry); + au_cpup_attr_nlink(inode, /*force*/1); + +out: + return err; +} + +static noinline_for_stack +int cpup_entry(struct au_cp_generic *cpg, struct dentry *dst_parent, + struct au_cpup_reg_attr *h_src_attr) +{ + int err; + umode_t mode; + unsigned int mnt_flags; + unsigned char isdir, isreg, force; + const unsigned char do_dt = !!au_ftest_cpup(cpg->flags, DTIME); + struct au_dtime dt; + struct path h_path; + struct dentry *h_src, *h_dst, *h_parent; + struct inode *h_inode, *h_dir; + struct super_block *sb; + + /* bsrc branch can be ro/rw. */ + h_src = au_h_dptr(cpg->dentry, cpg->bsrc); + h_inode = d_inode(h_src); + AuDebugOn(h_inode != au_h_iptr(d_inode(cpg->dentry), cpg->bsrc)); + + /* try stopping to be referenced while we are creating */ + h_dst = au_h_dptr(cpg->dentry, cpg->bdst); + if (au_ftest_cpup(cpg->flags, RENAME)) + AuDebugOn(strncmp(h_dst->d_name.name, AUFS_WH_PFX, + AUFS_WH_PFX_LEN)); + h_parent = h_dst->d_parent; /* dir inode is locked */ + h_dir = d_inode(h_parent); + IMustLock(h_dir); + AuDebugOn(h_parent != h_dst->d_parent); + + sb = cpg->dentry->d_sb; + h_path.mnt = au_sbr_mnt(sb, cpg->bdst); + if (do_dt) { + h_path.dentry = h_parent; + au_dtime_store(&dt, dst_parent, &h_path); + } + h_path.dentry = h_dst; + + isreg = 0; + isdir = 0; + mode = h_inode->i_mode; + switch (mode & S_IFMT) { + case S_IFREG: + isreg = 1; + err = vfsub_create(h_dir, &h_path, 0600, /*want_excl*/true); + if (!err) + err = au_do_cpup_regular(cpg, h_src_attr); + break; + case S_IFDIR: + isdir = 1; + err = vfsub_mkdir(h_dir, &h_path, mode); + if (!err) + err = au_do_cpup_dir(cpg, dst_parent, h_dir, &h_path); + break; + case S_IFLNK: + err = au_do_cpup_symlink(&h_path, h_src, h_dir); + break; + case S_IFCHR: + case S_IFBLK: + AuDebugOn(!capable(CAP_MKNOD)); + /*FALLTHROUGH*/ + case S_IFIFO: + case S_IFSOCK: + err = vfsub_mknod(h_dir, &h_path, mode, h_inode->i_rdev); + break; + default: + AuIOErr("Unknown inode type 0%o\n", mode); + err = -EIO; + } + if (!err) + err = au_reset_acl(h_dir, &h_path, mode); + + mnt_flags = au_mntflags(sb); + if (!au_opt_test(mnt_flags, UDBA_NONE) + && !isdir + && au_opt_test(mnt_flags, XINO) + && (h_inode->i_nlink == 1 + || (h_inode->i_state & I_LINKABLE)) + /* todo: unnecessary? */ + /* && d_inode(cpg->dentry)->i_nlink == 1 */ + && cpg->bdst < cpg->bsrc + && !au_ftest_cpup(cpg->flags, KEEPLINO)) + au_xino_write(sb, cpg->bsrc, h_inode->i_ino, /*ino*/0); + /* ignore this error */ + + if (!err) { + force = 0; + if (isreg) { + force = !!cpg->len; + if (cpg->len == -1) + force = !!i_size_read(h_inode); + } + au_fhsm_wrote(sb, cpg->bdst, force); + } + + if (do_dt) + au_dtime_revert(&dt); + return err; +} + +static int au_do_ren_after_cpup(struct au_cp_generic *cpg, struct path *h_path) +{ + int err; + struct dentry *dentry, *h_dentry, *h_parent, *parent; + struct inode *h_dir; + aufs_bindex_t bdst; + + dentry = cpg->dentry; + bdst = cpg->bdst; + h_dentry = au_h_dptr(dentry, bdst); + if (!au_ftest_cpup(cpg->flags, OVERWRITE)) { + dget(h_dentry); + au_set_h_dptr(dentry, bdst, NULL); + err = au_lkup_neg(dentry, bdst, /*wh*/0); + if (!err) + h_path->dentry = dget(au_h_dptr(dentry, bdst)); + au_set_h_dptr(dentry, bdst, h_dentry); + } else { + err = 0; + parent = dget_parent(dentry); + h_parent = au_h_dptr(parent, bdst); + dput(parent); + h_path->dentry = vfsub_lkup_one(&dentry->d_name, h_parent); + if (IS_ERR(h_path->dentry)) + err = PTR_ERR(h_path->dentry); + } + if (unlikely(err)) + goto out; + + h_parent = h_dentry->d_parent; /* dir inode is locked */ + h_dir = d_inode(h_parent); + IMustLock(h_dir); + AuDbg("%pd %pd\n", h_dentry, h_path->dentry); + /* no delegation since it is just created */ + err = vfsub_rename(h_dir, h_dentry, h_dir, h_path, /*delegated*/NULL, + /*flags*/0); + dput(h_path->dentry); + +out: + return err; +} + +/* + * copyup the @dentry from @bsrc to @bdst. + * the caller must set the both of lower dentries. + * @len is for truncating when it is -1 copyup the entire file. + * in link/rename cases, @dst_parent may be different from the real one. + * basic->bsrc can be larger than basic->bdst. + * aufs doesn't touch the credential so + * security_inode_copy_up{,_xattr}() are unnecrssary. + */ +static int au_cpup_single(struct au_cp_generic *cpg, struct dentry *dst_parent) +{ + int err, rerr; + aufs_bindex_t old_ibtop; + unsigned char isdir, plink; + struct dentry *h_src, *h_dst, *h_parent; + struct inode *dst_inode, *h_dir, *inode, *delegated, *src_inode; + struct super_block *sb; + struct au_branch *br; + /* to reuduce stack size */ + struct { + struct au_dtime dt; + struct path h_path; + struct au_cpup_reg_attr h_src_attr; + } *a; + + err = -ENOMEM; + a = kmalloc(sizeof(*a), GFP_NOFS); + if (unlikely(!a)) + goto out; + a->h_src_attr.valid = 0; + + sb = cpg->dentry->d_sb; + br = au_sbr(sb, cpg->bdst); + a->h_path.mnt = au_br_mnt(br); + h_dst = au_h_dptr(cpg->dentry, cpg->bdst); + h_parent = h_dst->d_parent; /* dir inode is locked */ + h_dir = d_inode(h_parent); + IMustLock(h_dir); + + h_src = au_h_dptr(cpg->dentry, cpg->bsrc); + inode = d_inode(cpg->dentry); + + if (!dst_parent) + dst_parent = dget_parent(cpg->dentry); + else + dget(dst_parent); + + plink = !!au_opt_test(au_mntflags(sb), PLINK); + dst_inode = au_h_iptr(inode, cpg->bdst); + if (dst_inode) { + if (unlikely(!plink)) { + err = -EIO; + AuIOErr("hi%lu(i%lu) exists on b%d " + "but plink is disabled\n", + dst_inode->i_ino, inode->i_ino, cpg->bdst); + goto out_parent; + } + + if (dst_inode->i_nlink) { + const int do_dt = au_ftest_cpup(cpg->flags, DTIME); + + h_src = au_plink_lkup(inode, cpg->bdst); + err = PTR_ERR(h_src); + if (IS_ERR(h_src)) + goto out_parent; + if (unlikely(d_is_negative(h_src))) { + err = -EIO; + AuIOErr("i%lu exists on b%d " + "but not pseudo-linked\n", + inode->i_ino, cpg->bdst); + dput(h_src); + goto out_parent; + } + + if (do_dt) { + a->h_path.dentry = h_parent; + au_dtime_store(&a->dt, dst_parent, &a->h_path); + } + + a->h_path.dentry = h_dst; + delegated = NULL; + err = vfsub_link(h_src, h_dir, &a->h_path, &delegated); + if (!err && au_ftest_cpup(cpg->flags, RENAME)) + err = au_do_ren_after_cpup(cpg, &a->h_path); + if (do_dt) + au_dtime_revert(&a->dt); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal link\n"); + iput(delegated); + } + dput(h_src); + goto out_parent; + } else + /* todo: cpup_wh_file? */ + /* udba work */ + au_update_ibrange(inode, /*do_put_zero*/1); + } + + isdir = S_ISDIR(inode->i_mode); + old_ibtop = au_ibtop(inode); + err = cpup_entry(cpg, dst_parent, &a->h_src_attr); + if (unlikely(err)) + goto out_rev; + dst_inode = d_inode(h_dst); + inode_lock_nested(dst_inode, AuLsc_I_CHILD2); + /* todo: necessary? */ + /* au_pin_hdir_unlock(cpg->pin); */ + + err = cpup_iattr(cpg->dentry, cpg->bdst, h_src, &a->h_src_attr); + if (unlikely(err)) { + /* todo: necessary? */ + /* au_pin_hdir_relock(cpg->pin); */ /* ignore an error */ + inode_unlock(dst_inode); + goto out_rev; + } + + if (cpg->bdst < old_ibtop) { + if (S_ISREG(inode->i_mode)) { + err = au_dy_iaop(inode, cpg->bdst, dst_inode); + if (unlikely(err)) { + /* ignore an error */ + /* au_pin_hdir_relock(cpg->pin); */ + inode_unlock(dst_inode); + goto out_rev; + } + } + au_set_ibtop(inode, cpg->bdst); + } else + au_set_ibbot(inode, cpg->bdst); + au_set_h_iptr(inode, cpg->bdst, au_igrab(dst_inode), + au_hi_flags(inode, isdir)); + + /* todo: necessary? */ + /* err = au_pin_hdir_relock(cpg->pin); */ + inode_unlock(dst_inode); + if (unlikely(err)) + goto out_rev; + + src_inode = d_inode(h_src); + if (!isdir + && (src_inode->i_nlink > 1 + || src_inode->i_state & I_LINKABLE) + && plink) + au_plink_append(inode, cpg->bdst, h_dst); + + if (au_ftest_cpup(cpg->flags, RENAME)) { + a->h_path.dentry = h_dst; + err = au_do_ren_after_cpup(cpg, &a->h_path); + } + if (!err) + goto out_parent; /* success */ + + /* revert */ +out_rev: + a->h_path.dentry = h_parent; + au_dtime_store(&a->dt, dst_parent, &a->h_path); + a->h_path.dentry = h_dst; + rerr = 0; + if (d_is_positive(h_dst)) { + if (!isdir) { + /* no delegation since it is just created */ + rerr = vfsub_unlink(h_dir, &a->h_path, + /*delegated*/NULL, /*force*/0); + } else + rerr = vfsub_rmdir(h_dir, &a->h_path); + } + au_dtime_revert(&a->dt); + if (rerr) { + AuIOErr("failed removing broken entry(%d, %d)\n", err, rerr); + err = -EIO; + } +out_parent: + dput(dst_parent); + kfree(a); +out: + return err; +} + +#if 0 /* reserved */ +struct au_cpup_single_args { + int *errp; + struct au_cp_generic *cpg; + struct dentry *dst_parent; +}; + +static void au_call_cpup_single(void *args) +{ + struct au_cpup_single_args *a = args; + + au_pin_hdir_acquire_nest(a->cpg->pin); + *a->errp = au_cpup_single(a->cpg, a->dst_parent); + au_pin_hdir_release(a->cpg->pin); +} +#endif + +/* + * prevent SIGXFSZ in copy-up. + * testing CAP_MKNOD is for generic fs, + * but CAP_FSETID is for xfs only, currently. + */ +static int au_cpup_sio_test(struct au_pin *pin, umode_t mode) +{ + int do_sio; + struct super_block *sb; + struct inode *h_dir; + + do_sio = 0; + sb = au_pinned_parent(pin)->d_sb; + if (!au_wkq_test() + && (!au_sbi(sb)->si_plink_maint_pid + || au_plink_maint(sb, AuLock_NOPLM))) { + switch (mode & S_IFMT) { + case S_IFREG: + /* no condition about RLIMIT_FSIZE and the file size */ + do_sio = 1; + break; + case S_IFCHR: + case S_IFBLK: + do_sio = !capable(CAP_MKNOD); + break; + } + if (!do_sio) + do_sio = ((mode & (S_ISUID | S_ISGID)) + && !capable(CAP_FSETID)); + /* this workaround may be removed in the future */ + if (!do_sio) { + h_dir = au_pinned_h_dir(pin); + do_sio = h_dir->i_mode & S_ISVTX; + } + } + + return do_sio; +} + +#if 0 /* reserved */ +int au_sio_cpup_single(struct au_cp_generic *cpg, struct dentry *dst_parent) +{ + int err, wkq_err; + struct dentry *h_dentry; + + h_dentry = au_h_dptr(cpg->dentry, cpg->bsrc); + if (!au_cpup_sio_test(pin, d_inode(h_dentry)->i_mode)) + err = au_cpup_single(cpg, dst_parent); + else { + struct au_cpup_single_args args = { + .errp = &err, + .cpg = cpg, + .dst_parent = dst_parent + }; + wkq_err = au_wkq_wait(au_call_cpup_single, &args); + if (unlikely(wkq_err)) + err = wkq_err; + } + + return err; +} +#endif + +/* + * copyup the @dentry from the first active lower branch to @bdst, + * using au_cpup_single(). + */ +static int au_cpup_simple(struct au_cp_generic *cpg) +{ + int err; + unsigned int flags_orig; + struct dentry *dentry; + + AuDebugOn(cpg->bsrc < 0); + + dentry = cpg->dentry; + DiMustWriteLock(dentry); + + err = au_lkup_neg(dentry, cpg->bdst, /*wh*/1); + if (!err) { + flags_orig = cpg->flags; + au_fset_cpup(cpg->flags, RENAME); + err = au_cpup_single(cpg, NULL); + cpg->flags = flags_orig; + if (!err) + return 0; /* success */ + + /* revert */ + au_set_h_dptr(dentry, cpg->bdst, NULL); + au_set_dbtop(dentry, cpg->bsrc); + } + + return err; +} + +struct au_cpup_simple_args { + int *errp; + struct au_cp_generic *cpg; +}; + +static void au_call_cpup_simple(void *args) +{ + struct au_cpup_simple_args *a = args; + + au_pin_hdir_acquire_nest(a->cpg->pin); + *a->errp = au_cpup_simple(a->cpg); + au_pin_hdir_release(a->cpg->pin); +} + +static int au_do_sio_cpup_simple(struct au_cp_generic *cpg) +{ + int err, wkq_err; + struct dentry *dentry, *parent; + struct file *h_file; + struct inode *h_dir; + + dentry = cpg->dentry; + h_file = NULL; + if (au_ftest_cpup(cpg->flags, HOPEN)) { + AuDebugOn(cpg->bsrc < 0); + h_file = au_h_open_pre(dentry, cpg->bsrc, /*force_wr*/0); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + } + + parent = dget_parent(dentry); + h_dir = au_h_iptr(d_inode(parent), cpg->bdst); + if (!au_test_h_perm_sio(h_dir, MAY_EXEC | MAY_WRITE) + && !au_cpup_sio_test(cpg->pin, d_inode(dentry)->i_mode)) + err = au_cpup_simple(cpg); + else { + struct au_cpup_simple_args args = { + .errp = &err, + .cpg = cpg + }; + wkq_err = au_wkq_wait(au_call_cpup_simple, &args); + if (unlikely(wkq_err)) + err = wkq_err; + } + + dput(parent); + if (h_file) + au_h_open_post(dentry, cpg->bsrc, h_file); + +out: + return err; +} + +int au_sio_cpup_simple(struct au_cp_generic *cpg) +{ + aufs_bindex_t bsrc, bbot; + struct dentry *dentry, *h_dentry; + + if (cpg->bsrc < 0) { + dentry = cpg->dentry; + bbot = au_dbbot(dentry); + for (bsrc = cpg->bdst + 1; bsrc <= bbot; bsrc++) { + h_dentry = au_h_dptr(dentry, bsrc); + if (h_dentry) { + AuDebugOn(d_is_negative(h_dentry)); + break; + } + } + AuDebugOn(bsrc > bbot); + cpg->bsrc = bsrc; + } + AuDebugOn(cpg->bsrc <= cpg->bdst); + return au_do_sio_cpup_simple(cpg); +} + +int au_sio_cpdown_simple(struct au_cp_generic *cpg) +{ + AuDebugOn(cpg->bdst <= cpg->bsrc); + return au_do_sio_cpup_simple(cpg); +} + +/* ---------------------------------------------------------------------- */ + +/* + * copyup the deleted file for writing. + */ +static int au_do_cpup_wh(struct au_cp_generic *cpg, struct dentry *wh_dentry, + struct file *file) +{ + int err; + unsigned int flags_orig; + aufs_bindex_t bsrc_orig; + struct au_dinfo *dinfo; + struct { + struct au_hdentry *hd; + struct dentry *h_dentry; + } hdst, hsrc; + + dinfo = au_di(cpg->dentry); + AuRwMustWriteLock(&dinfo->di_rwsem); + + bsrc_orig = cpg->bsrc; + cpg->bsrc = dinfo->di_btop; + hdst.hd = au_hdentry(dinfo, cpg->bdst); + hdst.h_dentry = hdst.hd->hd_dentry; + hdst.hd->hd_dentry = wh_dentry; + dinfo->di_btop = cpg->bdst; + + hsrc.h_dentry = NULL; + if (file) { + hsrc.hd = au_hdentry(dinfo, cpg->bsrc); + hsrc.h_dentry = hsrc.hd->hd_dentry; + hsrc.hd->hd_dentry = au_hf_top(file)->f_path.dentry; + } + flags_orig = cpg->flags; + cpg->flags = !AuCpup_DTIME; + err = au_cpup_single(cpg, /*h_parent*/NULL); + cpg->flags = flags_orig; + if (file) { + if (!err) + err = au_reopen_nondir(file); + hsrc.hd->hd_dentry = hsrc.h_dentry; + } + hdst.hd->hd_dentry = hdst.h_dentry; + dinfo->di_btop = cpg->bsrc; + cpg->bsrc = bsrc_orig; + + return err; +} + +static int au_cpup_wh(struct au_cp_generic *cpg, struct file *file) +{ + int err; + aufs_bindex_t bdst; + struct au_dtime dt; + struct dentry *dentry, *parent, *h_parent, *wh_dentry; + struct au_branch *br; + struct path h_path; + + dentry = cpg->dentry; + bdst = cpg->bdst; + br = au_sbr(dentry->d_sb, bdst); + parent = dget_parent(dentry); + h_parent = au_h_dptr(parent, bdst); + wh_dentry = au_whtmp_lkup(h_parent, br, &dentry->d_name); + err = PTR_ERR(wh_dentry); + if (IS_ERR(wh_dentry)) + goto out; + + h_path.dentry = h_parent; + h_path.mnt = au_br_mnt(br); + au_dtime_store(&dt, parent, &h_path); + err = au_do_cpup_wh(cpg, wh_dentry, file); + if (unlikely(err)) + goto out_wh; + + dget(wh_dentry); + h_path.dentry = wh_dentry; + if (!d_is_dir(wh_dentry)) { + /* no delegation since it is just created */ + err = vfsub_unlink(d_inode(h_parent), &h_path, + /*delegated*/NULL, /*force*/0); + } else + err = vfsub_rmdir(d_inode(h_parent), &h_path); + if (unlikely(err)) { + AuIOErr("failed remove copied-up tmp file %pd(%d)\n", + wh_dentry, err); + err = -EIO; + } + au_dtime_revert(&dt); + au_set_hi_wh(d_inode(dentry), bdst, wh_dentry); + +out_wh: + dput(wh_dentry); +out: + dput(parent); + return err; +} + +struct au_cpup_wh_args { + int *errp; + struct au_cp_generic *cpg; + struct file *file; +}; + +static void au_call_cpup_wh(void *args) +{ + struct au_cpup_wh_args *a = args; + + au_pin_hdir_acquire_nest(a->cpg->pin); + *a->errp = au_cpup_wh(a->cpg, a->file); + au_pin_hdir_release(a->cpg->pin); +} + +int au_sio_cpup_wh(struct au_cp_generic *cpg, struct file *file) +{ + int err, wkq_err; + aufs_bindex_t bdst; + struct dentry *dentry, *parent, *h_orph, *h_parent; + struct inode *dir, *h_dir, *h_tmpdir; + struct au_wbr *wbr; + struct au_pin wh_pin, *pin_orig; + + dentry = cpg->dentry; + bdst = cpg->bdst; + parent = dget_parent(dentry); + dir = d_inode(parent); + h_orph = NULL; + h_parent = NULL; + h_dir = au_igrab(au_h_iptr(dir, bdst)); + h_tmpdir = h_dir; + pin_orig = NULL; + if (!h_dir->i_nlink) { + wbr = au_sbr(dentry->d_sb, bdst)->br_wbr; + h_orph = wbr->wbr_orph; + + h_parent = dget(au_h_dptr(parent, bdst)); + au_set_h_dptr(parent, bdst, dget(h_orph)); + h_tmpdir = d_inode(h_orph); + au_set_h_iptr(dir, bdst, au_igrab(h_tmpdir), /*flags*/0); + + inode_lock_nested(h_tmpdir, AuLsc_I_PARENT3); + /* todo: au_h_open_pre()? */ + + pin_orig = cpg->pin; + au_pin_init(&wh_pin, dentry, bdst, AuLsc_DI_PARENT, + AuLsc_I_PARENT3, cpg->pin->udba, AuPin_DI_LOCKED); + cpg->pin = &wh_pin; + } + + if (!au_test_h_perm_sio(h_tmpdir, MAY_EXEC | MAY_WRITE) + && !au_cpup_sio_test(cpg->pin, d_inode(dentry)->i_mode)) + err = au_cpup_wh(cpg, file); + else { + struct au_cpup_wh_args args = { + .errp = &err, + .cpg = cpg, + .file = file + }; + wkq_err = au_wkq_wait(au_call_cpup_wh, &args); + if (unlikely(wkq_err)) + err = wkq_err; + } + + if (h_orph) { + inode_unlock(h_tmpdir); + /* todo: au_h_open_post()? */ + au_set_h_iptr(dir, bdst, au_igrab(h_dir), /*flags*/0); + au_set_h_dptr(parent, bdst, h_parent); + AuDebugOn(!pin_orig); + cpg->pin = pin_orig; + } + iput(h_dir); + dput(parent); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* + * generic routine for both of copy-up and copy-down. + */ +/* cf. revalidate function in file.c */ +int au_cp_dirs(struct dentry *dentry, aufs_bindex_t bdst, + int (*cp)(struct dentry *dentry, aufs_bindex_t bdst, + struct au_pin *pin, + struct dentry *h_parent, void *arg), + void *arg) +{ + int err; + struct au_pin pin; + struct dentry *d, *parent, *h_parent, *real_parent, *h_dentry; + + err = 0; + parent = dget_parent(dentry); + if (IS_ROOT(parent)) + goto out; + + au_pin_init(&pin, dentry, bdst, AuLsc_DI_PARENT2, AuLsc_I_PARENT2, + au_opt_udba(dentry->d_sb), AuPin_MNT_WRITE); + + /* do not use au_dpage */ + real_parent = parent; + while (1) { + dput(parent); + parent = dget_parent(dentry); + h_parent = au_h_dptr(parent, bdst); + if (h_parent) + goto out; /* success */ + + /* find top dir which is necessary to cpup */ + do { + d = parent; + dput(parent); + parent = dget_parent(d); + di_read_lock_parent3(parent, !AuLock_IR); + h_parent = au_h_dptr(parent, bdst); + di_read_unlock(parent, !AuLock_IR); + } while (!h_parent); + + if (d != real_parent) + di_write_lock_child3(d); + + /* somebody else might create while we were sleeping */ + h_dentry = au_h_dptr(d, bdst); + if (!h_dentry || d_is_negative(h_dentry)) { + if (h_dentry) + au_update_dbtop(d); + + au_pin_set_dentry(&pin, d); + err = au_do_pin(&pin); + if (!err) { + err = cp(d, bdst, &pin, h_parent, arg); + au_unpin(&pin); + } + } + + if (d != real_parent) + di_write_unlock(d); + if (unlikely(err)) + break; + } + +out: + dput(parent); + return err; +} + +static int au_cpup_dir(struct dentry *dentry, aufs_bindex_t bdst, + struct au_pin *pin, + struct dentry *h_parent __maybe_unused, + void *arg __maybe_unused) +{ + struct au_cp_generic cpg = { + .dentry = dentry, + .bdst = bdst, + .bsrc = -1, + .len = 0, + .pin = pin, + .flags = AuCpup_DTIME + }; + return au_sio_cpup_simple(&cpg); +} + +int au_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst) +{ + return au_cp_dirs(dentry, bdst, au_cpup_dir, NULL); +} + +int au_test_and_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst) +{ + int err; + struct dentry *parent; + struct inode *dir; + + parent = dget_parent(dentry); + dir = d_inode(parent); + err = 0; + if (au_h_iptr(dir, bdst)) + goto out; + + di_read_unlock(parent, AuLock_IR); + di_write_lock_parent(parent); + /* someone else might change our inode while we were sleeping */ + if (!au_h_iptr(dir, bdst)) + err = au_cpup_dirs(dentry, bdst); + di_downgrade_lock(parent, AuLock_IR); + +out: + dput(parent); + return err; +} diff --git a/fs/aufs/cpup.h b/fs/aufs/cpup.h new file mode 100644 index 00000000000..0faad688bcf --- /dev/null +++ b/fs/aufs/cpup.h @@ -0,0 +1,100 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * copy-up/down functions + */ + +#ifndef __AUFS_CPUP_H__ +#define __AUFS_CPUP_H__ + +#ifdef __KERNEL__ + +#include + +struct inode; +struct file; +struct au_pin; + +void au_cpup_attr_flags(struct inode *dst, unsigned int iflags); +void au_cpup_attr_timesizes(struct inode *inode); +void au_cpup_attr_nlink(struct inode *inode, int force); +void au_cpup_attr_changeable(struct inode *inode); +void au_cpup_igen(struct inode *inode, struct inode *h_inode); +void au_cpup_attr_all(struct inode *inode, int force); + +/* ---------------------------------------------------------------------- */ + +struct au_cp_generic { + struct dentry *dentry; + aufs_bindex_t bdst, bsrc; + loff_t len; + struct au_pin *pin; + unsigned int flags; +}; + +/* cpup flags */ +#define AuCpup_DTIME 1 /* do dtime_store/revert */ +#define AuCpup_KEEPLINO (1 << 1) /* do not clear the lower xino, + for link(2) */ +#define AuCpup_RENAME (1 << 2) /* rename after cpup */ +#define AuCpup_HOPEN (1 << 3) /* call h_open_pre/post() in + cpup */ +#define AuCpup_OVERWRITE (1 << 4) /* allow overwriting the + existing entry */ +#define AuCpup_RWDST (1 << 5) /* force write target even if + the branch is marked as RO */ + +#ifndef CONFIG_AUFS_BR_HFSPLUS +#undef AuCpup_HOPEN +#define AuCpup_HOPEN 0 +#endif + +#define au_ftest_cpup(flags, name) ((flags) & AuCpup_##name) +#define au_fset_cpup(flags, name) \ + do { (flags) |= AuCpup_##name; } while (0) +#define au_fclr_cpup(flags, name) \ + do { (flags) &= ~AuCpup_##name; } while (0) + +int au_copy_file(struct file *dst, struct file *src, loff_t len); +int au_sio_cpup_simple(struct au_cp_generic *cpg); +int au_sio_cpdown_simple(struct au_cp_generic *cpg); +int au_sio_cpup_wh(struct au_cp_generic *cpg, struct file *file); + +int au_cp_dirs(struct dentry *dentry, aufs_bindex_t bdst, + int (*cp)(struct dentry *dentry, aufs_bindex_t bdst, + struct au_pin *pin, + struct dentry *h_parent, void *arg), + void *arg); +int au_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst); +int au_test_and_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst); + +/* ---------------------------------------------------------------------- */ + +/* keep timestamps when copyup */ +struct au_dtime { + struct dentry *dt_dentry; + struct path dt_h_path; + struct timespec64 dt_atime, dt_mtime; +}; +void au_dtime_store(struct au_dtime *dt, struct dentry *dentry, + struct path *h_path); +void au_dtime_revert(struct au_dtime *dt); + +#endif /* __KERNEL__ */ +#endif /* __AUFS_CPUP_H__ */ diff --git a/fs/aufs/dbgaufs.c b/fs/aufs/dbgaufs.c new file mode 100644 index 00000000000..f269ff5ea1e --- /dev/null +++ b/fs/aufs/dbgaufs.c @@ -0,0 +1,478 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * debugfs interface + */ + +#include +#include "aufs.h" + +#ifndef CONFIG_SYSFS +#error DEBUG_FS depends upon SYSFS +#endif + +static struct dentry *dbgaufs; +static const mode_t dbgaufs_mode = 0444; + +/* 20 is max digits length of ulong 64 */ +struct dbgaufs_arg { + int n; + char a[20 * 4]; +}; + +/* + * common function for all XINO files + */ +static int dbgaufs_xi_release(struct inode *inode __maybe_unused, + struct file *file) +{ + kfree(file->private_data); + return 0; +} + +static int dbgaufs_xi_open(struct file *xf, struct file *file, int do_fcnt, + int cnt) +{ + int err; + struct kstat st; + struct dbgaufs_arg *p; + + err = -ENOMEM; + p = kmalloc(sizeof(*p), GFP_NOFS); + if (unlikely(!p)) + goto out; + + err = 0; + p->n = 0; + file->private_data = p; + if (!xf) + goto out; + + err = vfsub_getattr(&xf->f_path, &st); + if (!err) { + if (do_fcnt) + p->n = snprintf + (p->a, sizeof(p->a), "%d, %llux%u %lld\n", + cnt, st.blocks, st.blksize, + (long long)st.size); + else + p->n = snprintf(p->a, sizeof(p->a), "%llux%u %lld\n", + st.blocks, st.blksize, + (long long)st.size); + AuDebugOn(p->n >= sizeof(p->a)); + } else { + p->n = snprintf(p->a, sizeof(p->a), "err %d\n", err); + err = 0; + } + +out: + return err; + +} + +static ssize_t dbgaufs_xi_read(struct file *file, char __user *buf, + size_t count, loff_t *ppos) +{ + struct dbgaufs_arg *p; + + p = file->private_data; + return simple_read_from_buffer(buf, count, ppos, p->a, p->n); +} + +/* ---------------------------------------------------------------------- */ + +struct dbgaufs_plink_arg { + int n; + char a[]; +}; + +static int dbgaufs_plink_release(struct inode *inode __maybe_unused, + struct file *file) +{ + free_page((unsigned long)file->private_data); + return 0; +} + +static int dbgaufs_plink_open(struct inode *inode, struct file *file) +{ + int err, i, limit; + unsigned long n, sum; + struct dbgaufs_plink_arg *p; + struct au_sbinfo *sbinfo; + struct super_block *sb; + struct hlist_bl_head *hbl; + + err = -ENOMEM; + p = (void *)get_zeroed_page(GFP_NOFS); + if (unlikely(!p)) + goto out; + + err = -EFBIG; + sbinfo = inode->i_private; + sb = sbinfo->si_sb; + si_noflush_read_lock(sb); + if (au_opt_test(au_mntflags(sb), PLINK)) { + limit = PAGE_SIZE - sizeof(p->n); + + /* the number of buckets */ + n = snprintf(p->a + p->n, limit, "%d\n", AuPlink_NHASH); + p->n += n; + limit -= n; + + sum = 0; + for (i = 0, hbl = sbinfo->si_plink; i < AuPlink_NHASH; + i++, hbl++) { + n = au_hbl_count(hbl); + sum += n; + + n = snprintf(p->a + p->n, limit, "%lu ", n); + p->n += n; + limit -= n; + if (unlikely(limit <= 0)) + goto out_free; + } + p->a[p->n - 1] = '\n'; + + /* the sum of plinks */ + n = snprintf(p->a + p->n, limit, "%lu\n", sum); + p->n += n; + limit -= n; + if (unlikely(limit <= 0)) + goto out_free; + } else { +#define str "1\n0\n0\n" + p->n = sizeof(str) - 1; + strcpy(p->a, str); +#undef str + } + si_read_unlock(sb); + + err = 0; + file->private_data = p; + goto out; /* success */ + +out_free: + free_page((unsigned long)p); +out: + return err; +} + +static ssize_t dbgaufs_plink_read(struct file *file, char __user *buf, + size_t count, loff_t *ppos) +{ + struct dbgaufs_plink_arg *p; + + p = file->private_data; + return simple_read_from_buffer(buf, count, ppos, p->a, p->n); +} + +static const struct file_operations dbgaufs_plink_fop = { + .owner = THIS_MODULE, + .open = dbgaufs_plink_open, + .release = dbgaufs_plink_release, + .read = dbgaufs_plink_read +}; + +/* ---------------------------------------------------------------------- */ + +static int dbgaufs_xib_open(struct inode *inode, struct file *file) +{ + int err; + struct au_sbinfo *sbinfo; + struct super_block *sb; + + sbinfo = inode->i_private; + sb = sbinfo->si_sb; + si_noflush_read_lock(sb); + err = dbgaufs_xi_open(sbinfo->si_xib, file, /*do_fcnt*/0, /*cnt*/0); + si_read_unlock(sb); + return err; +} + +static const struct file_operations dbgaufs_xib_fop = { + .owner = THIS_MODULE, + .open = dbgaufs_xib_open, + .release = dbgaufs_xi_release, + .read = dbgaufs_xi_read +}; + +/* ---------------------------------------------------------------------- */ + +#define DbgaufsXi_PREFIX "xi" + +static int dbgaufs_xino_open(struct inode *inode, struct file *file) +{ + int err; + long l; + struct au_sbinfo *sbinfo; + struct super_block *sb; + struct file *xf; + struct qstr *name; + struct au_branch *br; + + err = -ENOENT; + xf = NULL; + name = &file->f_path.dentry->d_name; + if (unlikely(name->len < sizeof(DbgaufsXi_PREFIX) + || memcmp(name->name, DbgaufsXi_PREFIX, + sizeof(DbgaufsXi_PREFIX) - 1))) + goto out; + err = kstrtol(name->name + sizeof(DbgaufsXi_PREFIX) - 1, 10, &l); + if (unlikely(err)) + goto out; + + sbinfo = inode->i_private; + sb = sbinfo->si_sb; + si_noflush_read_lock(sb); + if (l <= au_sbbot(sb)) { + br = au_sbr(sb, (aufs_bindex_t)l); + xf = au_xino_file(br); + err = dbgaufs_xi_open(xf, file, /*do_fcnt*/1, + au_xino_count(br)); + } else + err = -ENOENT; + si_read_unlock(sb); + +out: + return err; +} + +static const struct file_operations dbgaufs_xino_fop = { + .owner = THIS_MODULE, + .open = dbgaufs_xino_open, + .release = dbgaufs_xi_release, + .read = dbgaufs_xi_read +}; + +void dbgaufs_xino_del(struct au_branch *br) +{ + struct dentry *dbgaufs; + + dbgaufs = br->br_dbgaufs; + if (!dbgaufs) + return; + + br->br_dbgaufs = NULL; + /* debugfs acquires the parent i_mutex */ + lockdep_off(); + debugfs_remove(dbgaufs); + lockdep_on(); +} + +void dbgaufs_brs_del(struct super_block *sb, aufs_bindex_t bindex) +{ + aufs_bindex_t bbot; + struct au_branch *br; + + if (!au_sbi(sb)->si_dbgaufs) + return; + + bbot = au_sbbot(sb); + for (; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + dbgaufs_xino_del(br); + } +} + +static void dbgaufs_br_add(struct super_block *sb, aufs_bindex_t bindex, + struct dentry *parent, struct au_sbinfo *sbinfo) +{ + struct au_branch *br; + struct dentry *d; + char name[sizeof(DbgaufsXi_PREFIX) + 5]; /* "xi" bindex NULL */ + + snprintf(name, sizeof(name), DbgaufsXi_PREFIX "%d", bindex); + br = au_sbr(sb, bindex); + if (br->br_dbgaufs) { + struct qstr qstr = QSTR_INIT(name, strlen(name)); + + if (!au_qstreq(&br->br_dbgaufs->d_name, &qstr)) { + /* debugfs acquires the parent i_mutex */ + lockdep_off(); + d = debugfs_rename(parent, br->br_dbgaufs, parent, + name); + lockdep_on(); + if (unlikely(!d)) + pr_warn("failed renaming %pd/%s, ignored.\n", + parent, name); + } + } else { + lockdep_off(); + br->br_dbgaufs = debugfs_create_file(name, dbgaufs_mode, parent, + sbinfo, &dbgaufs_xino_fop); + lockdep_on(); + if (unlikely(!br->br_dbgaufs)) + pr_warn("failed creaiting %pd/%s, ignored.\n", + parent, name); + } +} + +void dbgaufs_brs_add(struct super_block *sb, aufs_bindex_t bindex, int topdown) +{ + struct au_sbinfo *sbinfo; + struct dentry *parent; + aufs_bindex_t bbot; + + if (!au_opt_test(au_mntflags(sb), XINO)) + return; + + sbinfo = au_sbi(sb); + parent = sbinfo->si_dbgaufs; + if (!parent) + return; + + bbot = au_sbbot(sb); + if (topdown) + for (; bindex <= bbot; bindex++) + dbgaufs_br_add(sb, bindex, parent, sbinfo); + else + for (; bbot >= bindex; bbot--) + dbgaufs_br_add(sb, bbot, parent, sbinfo); +} + +/* ---------------------------------------------------------------------- */ + +#ifdef CONFIG_AUFS_EXPORT +static int dbgaufs_xigen_open(struct inode *inode, struct file *file) +{ + int err; + struct au_sbinfo *sbinfo; + struct super_block *sb; + + sbinfo = inode->i_private; + sb = sbinfo->si_sb; + si_noflush_read_lock(sb); + err = dbgaufs_xi_open(sbinfo->si_xigen, file, /*do_fcnt*/0, /*cnt*/0); + si_read_unlock(sb); + return err; +} + +static const struct file_operations dbgaufs_xigen_fop = { + .owner = THIS_MODULE, + .open = dbgaufs_xigen_open, + .release = dbgaufs_xi_release, + .read = dbgaufs_xi_read +}; + +static int dbgaufs_xigen_init(struct au_sbinfo *sbinfo) +{ + int err; + + /* + * This function is a dynamic '__init' function actually, + * so the tiny check for si_rwsem is unnecessary. + */ + /* AuRwMustWriteLock(&sbinfo->si_rwsem); */ + + err = -EIO; + sbinfo->si_dbgaufs_xigen = debugfs_create_file + ("xigen", dbgaufs_mode, sbinfo->si_dbgaufs, sbinfo, + &dbgaufs_xigen_fop); + if (sbinfo->si_dbgaufs_xigen) + err = 0; + + return err; +} +#else +static int dbgaufs_xigen_init(struct au_sbinfo *sbinfo) +{ + return 0; +} +#endif /* CONFIG_AUFS_EXPORT */ + +/* ---------------------------------------------------------------------- */ + +void dbgaufs_si_fin(struct au_sbinfo *sbinfo) +{ + /* + * This function is a dynamic '__fin' function actually, + * so the tiny check for si_rwsem is unnecessary. + */ + /* AuRwMustWriteLock(&sbinfo->si_rwsem); */ + + debugfs_remove_recursive(sbinfo->si_dbgaufs); + sbinfo->si_dbgaufs = NULL; +} + +int dbgaufs_si_init(struct au_sbinfo *sbinfo) +{ + int err; + char name[SysaufsSiNameLen]; + + /* + * This function is a dynamic '__init' function actually, + * so the tiny check for si_rwsem is unnecessary. + */ + /* AuRwMustWriteLock(&sbinfo->si_rwsem); */ + + err = -ENOENT; + if (!dbgaufs) { + AuErr1("/debug/aufs is uninitialized\n"); + goto out; + } + + err = -EIO; + sysaufs_name(sbinfo, name); + sbinfo->si_dbgaufs = debugfs_create_dir(name, dbgaufs); + if (unlikely(!sbinfo->si_dbgaufs)) + goto out; + + /* regardless plink/noplink option */ + sbinfo->si_dbgaufs_plink = debugfs_create_file + ("plink", dbgaufs_mode, sbinfo->si_dbgaufs, sbinfo, + &dbgaufs_plink_fop); + if (unlikely(!sbinfo->si_dbgaufs_plink)) + goto out_dir; + + /* regardless xino/noxino option */ + sbinfo->si_dbgaufs_xib = debugfs_create_file + ("xib", dbgaufs_mode, sbinfo->si_dbgaufs, sbinfo, + &dbgaufs_xib_fop); + if (unlikely(!sbinfo->si_dbgaufs_xib)) + goto out_dir; + + err = dbgaufs_xigen_init(sbinfo); + if (!err) + goto out; /* success */ + +out_dir: + dbgaufs_si_fin(sbinfo); +out: + if (unlikely(err)) + pr_err("debugfs/aufs failed\n"); + return err; +} + +/* ---------------------------------------------------------------------- */ + +void dbgaufs_fin(void) +{ + debugfs_remove(dbgaufs); +} + +int __init dbgaufs_init(void) +{ + int err; + + err = -EIO; + dbgaufs = debugfs_create_dir(AUFS_NAME, NULL); + if (dbgaufs) + err = 0; + return err; +} diff --git a/fs/aufs/dbgaufs.h b/fs/aufs/dbgaufs.h new file mode 100644 index 00000000000..59d7b9d0848 --- /dev/null +++ b/fs/aufs/dbgaufs.h @@ -0,0 +1,53 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * debugfs interface + */ + +#ifndef __DBGAUFS_H__ +#define __DBGAUFS_H__ + +#ifdef __KERNEL__ + +struct super_block; +struct au_sbinfo; +struct au_branch; + +#ifdef CONFIG_DEBUG_FS +/* dbgaufs.c */ +void dbgaufs_xino_del(struct au_branch *br); +void dbgaufs_brs_del(struct super_block *sb, aufs_bindex_t bindex); +void dbgaufs_brs_add(struct super_block *sb, aufs_bindex_t bindex, int topdown); +void dbgaufs_si_fin(struct au_sbinfo *sbinfo); +int dbgaufs_si_init(struct au_sbinfo *sbinfo); +void dbgaufs_fin(void); +int __init dbgaufs_init(void); +#else +AuStubVoid(dbgaufs_xino_del, struct au_branch *br) +AuStubVoid(dbgaufs_brs_del, struct super_block *sb, aufs_bindex_t bindex) +AuStubVoid(dbgaufs_brs_add, struct super_block *sb, aufs_bindex_t bindex, + int topdown) +AuStubVoid(dbgaufs_si_fin, struct au_sbinfo *sbinfo) +AuStubInt0(dbgaufs_si_init, struct au_sbinfo *sbinfo) +AuStubVoid(dbgaufs_fin, void) +AuStubInt0(__init dbgaufs_init, void) +#endif /* CONFIG_DEBUG_FS */ + +#endif /* __KERNEL__ */ +#endif /* __DBGAUFS_H__ */ diff --git a/fs/aufs/dcsub.c b/fs/aufs/dcsub.c new file mode 100644 index 00000000000..b3082881054 --- /dev/null +++ b/fs/aufs/dcsub.c @@ -0,0 +1,225 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * sub-routines for dentry cache + */ + +#include "aufs.h" + +static void au_dpage_free(struct au_dpage *dpage) +{ + int i; + struct dentry **p; + + p = dpage->dentries; + for (i = 0; i < dpage->ndentry; i++) + dput(*p++); + free_page((unsigned long)dpage->dentries); +} + +int au_dpages_init(struct au_dcsub_pages *dpages, gfp_t gfp) +{ + int err; + void *p; + + err = -ENOMEM; + dpages->dpages = kmalloc(sizeof(*dpages->dpages), gfp); + if (unlikely(!dpages->dpages)) + goto out; + + p = (void *)__get_free_page(gfp); + if (unlikely(!p)) + goto out_dpages; + + dpages->dpages[0].ndentry = 0; + dpages->dpages[0].dentries = p; + dpages->ndpage = 1; + return 0; /* success */ + +out_dpages: + kfree(dpages->dpages); +out: + return err; +} + +void au_dpages_free(struct au_dcsub_pages *dpages) +{ + int i; + struct au_dpage *p; + + p = dpages->dpages; + for (i = 0; i < dpages->ndpage; i++) + au_dpage_free(p++); + kfree(dpages->dpages); +} + +static int au_dpages_append(struct au_dcsub_pages *dpages, + struct dentry *dentry, gfp_t gfp) +{ + int err, sz; + struct au_dpage *dpage; + void *p; + + dpage = dpages->dpages + dpages->ndpage - 1; + sz = PAGE_SIZE / sizeof(dentry); + if (unlikely(dpage->ndentry >= sz)) { + AuLabel(new dpage); + err = -ENOMEM; + sz = dpages->ndpage * sizeof(*dpages->dpages); + p = au_kzrealloc(dpages->dpages, sz, + sz + sizeof(*dpages->dpages), gfp, + /*may_shrink*/0); + if (unlikely(!p)) + goto out; + + dpages->dpages = p; + dpage = dpages->dpages + dpages->ndpage; + p = (void *)__get_free_page(gfp); + if (unlikely(!p)) + goto out; + + dpage->ndentry = 0; + dpage->dentries = p; + dpages->ndpage++; + } + + AuDebugOn(au_dcount(dentry) <= 0); + dpage->dentries[dpage->ndentry++] = dget_dlock(dentry); + return 0; /* success */ + +out: + return err; +} + +/* todo: BAD approach */ +/* copied from linux/fs/dcache.c */ +enum d_walk_ret { + D_WALK_CONTINUE, + D_WALK_QUIT, + D_WALK_NORETRY, + D_WALK_SKIP, +}; + +extern void d_walk(struct dentry *parent, void *data, + enum d_walk_ret (*enter)(void *, struct dentry *)); + +struct ac_dpages_arg { + int err; + struct au_dcsub_pages *dpages; + struct super_block *sb; + au_dpages_test test; + void *arg; +}; + +static enum d_walk_ret au_call_dpages_append(void *_arg, struct dentry *dentry) +{ + enum d_walk_ret ret; + struct ac_dpages_arg *arg = _arg; + + ret = D_WALK_CONTINUE; + if (dentry->d_sb == arg->sb + && !IS_ROOT(dentry) + && au_dcount(dentry) > 0 + && au_di(dentry) + && (!arg->test || arg->test(dentry, arg->arg))) { + arg->err = au_dpages_append(arg->dpages, dentry, GFP_ATOMIC); + if (unlikely(arg->err)) + ret = D_WALK_QUIT; + } + + return ret; +} + +int au_dcsub_pages(struct au_dcsub_pages *dpages, struct dentry *root, + au_dpages_test test, void *arg) +{ + struct ac_dpages_arg args = { + .err = 0, + .dpages = dpages, + .sb = root->d_sb, + .test = test, + .arg = arg + }; + + d_walk(root, &args, au_call_dpages_append); + + return args.err; +} + +int au_dcsub_pages_rev(struct au_dcsub_pages *dpages, struct dentry *dentry, + int do_include, au_dpages_test test, void *arg) +{ + int err; + + err = 0; + write_seqlock(&rename_lock); + spin_lock(&dentry->d_lock); + if (do_include + && au_dcount(dentry) > 0 + && (!test || test(dentry, arg))) + err = au_dpages_append(dpages, dentry, GFP_ATOMIC); + spin_unlock(&dentry->d_lock); + if (unlikely(err)) + goto out; + + /* + * RCU for vfsmount is unnecessary since this is a traverse in a single + * mount + */ + while (!IS_ROOT(dentry)) { + dentry = dentry->d_parent; /* rename_lock is locked */ + spin_lock(&dentry->d_lock); + if (au_dcount(dentry) > 0 + && (!test || test(dentry, arg))) + err = au_dpages_append(dpages, dentry, GFP_ATOMIC); + spin_unlock(&dentry->d_lock); + if (unlikely(err)) + break; + } + +out: + write_sequnlock(&rename_lock); + return err; +} + +static inline int au_dcsub_dpages_aufs(struct dentry *dentry, void *arg) +{ + return au_di(dentry) && dentry->d_sb == arg; +} + +int au_dcsub_pages_rev_aufs(struct au_dcsub_pages *dpages, + struct dentry *dentry, int do_include) +{ + return au_dcsub_pages_rev(dpages, dentry, do_include, + au_dcsub_dpages_aufs, dentry->d_sb); +} + +int au_test_subdir(struct dentry *d1, struct dentry *d2) +{ + struct path path[2] = { + { + .dentry = d1 + }, + { + .dentry = d2 + } + }; + + return path_is_under(path + 0, path + 1); +} diff --git a/fs/aufs/dcsub.h b/fs/aufs/dcsub.h new file mode 100644 index 00000000000..c610133deea --- /dev/null +++ b/fs/aufs/dcsub.h @@ -0,0 +1,137 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * sub-routines for dentry cache + */ + +#ifndef __AUFS_DCSUB_H__ +#define __AUFS_DCSUB_H__ + +#ifdef __KERNEL__ + +#include +#include + +struct au_dpage { + int ndentry; + struct dentry **dentries; +}; + +struct au_dcsub_pages { + int ndpage; + struct au_dpage *dpages; +}; + +/* ---------------------------------------------------------------------- */ + +/* dcsub.c */ +int au_dpages_init(struct au_dcsub_pages *dpages, gfp_t gfp); +void au_dpages_free(struct au_dcsub_pages *dpages); +typedef int (*au_dpages_test)(struct dentry *dentry, void *arg); +int au_dcsub_pages(struct au_dcsub_pages *dpages, struct dentry *root, + au_dpages_test test, void *arg); +int au_dcsub_pages_rev(struct au_dcsub_pages *dpages, struct dentry *dentry, + int do_include, au_dpages_test test, void *arg); +int au_dcsub_pages_rev_aufs(struct au_dcsub_pages *dpages, + struct dentry *dentry, int do_include); +int au_test_subdir(struct dentry *d1, struct dentry *d2); + +/* ---------------------------------------------------------------------- */ + +/* + * todo: in linux-3.13, several similar (but faster) helpers are added to + * include/linux/dcache.h. Try them (in the future). + */ + +static inline int au_d_hashed_positive(struct dentry *d) +{ + int err; + struct inode *inode = d_inode(d); + + err = 0; + if (unlikely(d_unhashed(d) + || d_is_negative(d) + || !inode->i_nlink)) + err = -ENOENT; + return err; +} + +static inline int au_d_linkable(struct dentry *d) +{ + int err; + struct inode *inode = d_inode(d); + + err = au_d_hashed_positive(d); + if (err + && d_is_positive(d) + && (inode->i_state & I_LINKABLE)) + err = 0; + return err; +} + +static inline int au_d_alive(struct dentry *d) +{ + int err; + struct inode *inode; + + err = 0; + if (!IS_ROOT(d)) + err = au_d_hashed_positive(d); + else { + inode = d_inode(d); + if (unlikely(d_unlinked(d) + || d_is_negative(d) + || !inode->i_nlink)) + err = -ENOENT; + } + return err; +} + +static inline int au_alive_dir(struct dentry *d) +{ + int err; + + err = au_d_alive(d); + if (unlikely(err || IS_DEADDIR(d_inode(d)))) + err = -ENOENT; + return err; +} + +static inline int au_qstreq(struct qstr *a, struct qstr *b) +{ + return a->len == b->len + && !memcmp(a->name, b->name, a->len); +} + +/* + * by the commit + * 360f547 2015-01-25 dcache: let the dentry count go down to zero without + * taking d_lock + * the type of d_lockref.count became int, but the inlined function d_count() + * still returns unsigned int. + * I don't know why. Maybe it is for every d_count() users? + * Anyway au_dcount() lives on. + */ +static inline int au_dcount(struct dentry *d) +{ + return (int)d_count(d); +} + +#endif /* __KERNEL__ */ +#endif /* __AUFS_DCSUB_H__ */ diff --git a/fs/aufs/debug.c b/fs/aufs/debug.c new file mode 100644 index 00000000000..5cbd936dce4 --- /dev/null +++ b/fs/aufs/debug.c @@ -0,0 +1,441 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * debug print functions + */ + +#include "aufs.h" + +/* Returns 0, or -errno. arg is in kp->arg. */ +static int param_atomic_t_set(const char *val, const struct kernel_param *kp) +{ + int err, n; + + err = kstrtoint(val, 0, &n); + if (!err) { + if (n > 0) + au_debug_on(); + else + au_debug_off(); + } + return err; +} + +/* Returns length written or -errno. Buffer is 4k (ie. be short!) */ +static int param_atomic_t_get(char *buffer, const struct kernel_param *kp) +{ + atomic_t *a; + + a = kp->arg; + return sprintf(buffer, "%d", atomic_read(a)); +} + +static struct kernel_param_ops param_ops_atomic_t = { + .set = param_atomic_t_set, + .get = param_atomic_t_get + /* void (*free)(void *arg) */ +}; + +atomic_t aufs_debug = ATOMIC_INIT(0); +MODULE_PARM_DESC(debug, "debug print"); +module_param_named(debug, aufs_debug, atomic_t, 0664); + +DEFINE_MUTEX(au_dbg_mtx); /* just to serialize the dbg msgs */ +char *au_plevel = KERN_DEBUG; +#define dpri(fmt, ...) do { \ + if ((au_plevel \ + && strcmp(au_plevel, KERN_DEBUG)) \ + || au_debug_test()) \ + printk("%s" fmt, au_plevel, ##__VA_ARGS__); \ +} while (0) + +/* ---------------------------------------------------------------------- */ + +void au_dpri_whlist(struct au_nhash *whlist) +{ + unsigned long ul, n; + struct hlist_head *head; + struct au_vdir_wh *pos; + + n = whlist->nh_num; + head = whlist->nh_head; + for (ul = 0; ul < n; ul++) { + hlist_for_each_entry(pos, head, wh_hash) + dpri("b%d, %.*s, %d\n", + pos->wh_bindex, + pos->wh_str.len, pos->wh_str.name, + pos->wh_str.len); + head++; + } +} + +void au_dpri_vdir(struct au_vdir *vdir) +{ + unsigned long ul; + union au_vdir_deblk_p p; + unsigned char *o; + + if (!vdir || IS_ERR(vdir)) { + dpri("err %ld\n", PTR_ERR(vdir)); + return; + } + + dpri("deblk %u, nblk %lu, deblk %p, last{%lu, %p}, ver %llu\n", + vdir->vd_deblk_sz, vdir->vd_nblk, vdir->vd_deblk, + vdir->vd_last.ul, vdir->vd_last.p.deblk, vdir->vd_version); + for (ul = 0; ul < vdir->vd_nblk; ul++) { + p.deblk = vdir->vd_deblk[ul]; + o = p.deblk; + dpri("[%lu]: %p\n", ul, o); + } +} + +static int do_pri_inode(aufs_bindex_t bindex, struct inode *inode, int hn, + struct dentry *wh) +{ + char *n = NULL; + int l = 0; + + if (!inode || IS_ERR(inode)) { + dpri("i%d: err %ld\n", bindex, PTR_ERR(inode)); + return -1; + } + + /* the type of i_blocks depends upon CONFIG_LBDAF */ + BUILD_BUG_ON(sizeof(inode->i_blocks) != sizeof(unsigned long) + && sizeof(inode->i_blocks) != sizeof(u64)); + if (wh) { + n = (void *)wh->d_name.name; + l = wh->d_name.len; + } + + dpri("i%d: %p, i%lu, %s, cnt %d, nl %u, 0%o, sz %llu, blk %llu," + " hn %d, ct %lld, np %lu, st 0x%lx, f 0x%x, v %llu, g %x%s%.*s\n", + bindex, inode, + inode->i_ino, inode->i_sb ? au_sbtype(inode->i_sb) : "??", + atomic_read(&inode->i_count), inode->i_nlink, inode->i_mode, + i_size_read(inode), (unsigned long long)inode->i_blocks, + hn, (long long)timespec64_to_ns(&inode->i_ctime) & 0x0ffff, + inode->i_mapping ? inode->i_mapping->nrpages : 0, + inode->i_state, inode->i_flags, inode_peek_iversion(inode), + inode->i_generation, + l ? ", wh " : "", l, n); + return 0; +} + +void au_dpri_inode(struct inode *inode) +{ + struct au_iinfo *iinfo; + struct au_hinode *hi; + aufs_bindex_t bindex; + int err, hn; + + err = do_pri_inode(-1, inode, -1, NULL); + if (err || !au_test_aufs(inode->i_sb) || au_is_bad_inode(inode)) + return; + + iinfo = au_ii(inode); + dpri("i-1: btop %d, bbot %d, gen %d\n", + iinfo->ii_btop, iinfo->ii_bbot, au_iigen(inode, NULL)); + if (iinfo->ii_btop < 0) + return; + hn = 0; + for (bindex = iinfo->ii_btop; bindex <= iinfo->ii_bbot; bindex++) { + hi = au_hinode(iinfo, bindex); + hn = !!au_hn(hi); + do_pri_inode(bindex, hi->hi_inode, hn, hi->hi_whdentry); + } +} + +void au_dpri_dalias(struct inode *inode) +{ + struct dentry *d; + + spin_lock(&inode->i_lock); + hlist_for_each_entry(d, &inode->i_dentry, d_u.d_alias) + au_dpri_dentry(d); + spin_unlock(&inode->i_lock); +} + +static int do_pri_dentry(aufs_bindex_t bindex, struct dentry *dentry) +{ + struct dentry *wh = NULL; + int hn; + struct inode *inode; + struct au_iinfo *iinfo; + struct au_hinode *hi; + + if (!dentry || IS_ERR(dentry)) { + dpri("d%d: err %ld\n", bindex, PTR_ERR(dentry)); + return -1; + } + /* do not call dget_parent() here */ + /* note: access d_xxx without d_lock */ + dpri("d%d: %p, %pd2?, %s, cnt %d, flags 0x%x, %shashed\n", + bindex, dentry, dentry, + dentry->d_sb ? au_sbtype(dentry->d_sb) : "??", + au_dcount(dentry), dentry->d_flags, + d_unhashed(dentry) ? "un" : ""); + hn = -1; + inode = NULL; + if (d_is_positive(dentry)) + inode = d_inode(dentry); + if (inode + && au_test_aufs(dentry->d_sb) + && bindex >= 0 + && !au_is_bad_inode(inode)) { + iinfo = au_ii(inode); + hi = au_hinode(iinfo, bindex); + hn = !!au_hn(hi); + wh = hi->hi_whdentry; + } + do_pri_inode(bindex, inode, hn, wh); + return 0; +} + +void au_dpri_dentry(struct dentry *dentry) +{ + struct au_dinfo *dinfo; + aufs_bindex_t bindex; + int err; + + err = do_pri_dentry(-1, dentry); + if (err || !au_test_aufs(dentry->d_sb)) + return; + + dinfo = au_di(dentry); + if (!dinfo) + return; + dpri("d-1: btop %d, bbot %d, bwh %d, bdiropq %d, gen %d, tmp %d\n", + dinfo->di_btop, dinfo->di_bbot, + dinfo->di_bwh, dinfo->di_bdiropq, au_digen(dentry), + dinfo->di_tmpfile); + if (dinfo->di_btop < 0) + return; + for (bindex = dinfo->di_btop; bindex <= dinfo->di_bbot; bindex++) + do_pri_dentry(bindex, au_hdentry(dinfo, bindex)->hd_dentry); +} + +static int do_pri_file(aufs_bindex_t bindex, struct file *file) +{ + char a[32]; + + if (!file || IS_ERR(file)) { + dpri("f%d: err %ld\n", bindex, PTR_ERR(file)); + return -1; + } + a[0] = 0; + if (bindex < 0 + && !IS_ERR_OR_NULL(file->f_path.dentry) + && au_test_aufs(file->f_path.dentry->d_sb) + && au_fi(file)) + snprintf(a, sizeof(a), ", gen %d, mmapped %d", + au_figen(file), atomic_read(&au_fi(file)->fi_mmapped)); + dpri("f%d: mode 0x%x, flags 0%o, cnt %ld, v %llu, pos %llu%s\n", + bindex, file->f_mode, file->f_flags, (long)file_count(file), + file->f_version, file->f_pos, a); + if (!IS_ERR_OR_NULL(file->f_path.dentry)) + do_pri_dentry(bindex, file->f_path.dentry); + return 0; +} + +void au_dpri_file(struct file *file) +{ + struct au_finfo *finfo; + struct au_fidir *fidir; + struct au_hfile *hfile; + aufs_bindex_t bindex; + int err; + + err = do_pri_file(-1, file); + if (err + || IS_ERR_OR_NULL(file->f_path.dentry) + || !au_test_aufs(file->f_path.dentry->d_sb)) + return; + + finfo = au_fi(file); + if (!finfo) + return; + if (finfo->fi_btop < 0) + return; + fidir = finfo->fi_hdir; + if (!fidir) + do_pri_file(finfo->fi_btop, finfo->fi_htop.hf_file); + else + for (bindex = finfo->fi_btop; + bindex >= 0 && bindex <= fidir->fd_bbot; + bindex++) { + hfile = fidir->fd_hfile + bindex; + do_pri_file(bindex, hfile ? hfile->hf_file : NULL); + } +} + +static int do_pri_br(aufs_bindex_t bindex, struct au_branch *br) +{ + struct vfsmount *mnt; + struct super_block *sb; + + if (!br || IS_ERR(br)) + goto out; + mnt = au_br_mnt(br); + if (!mnt || IS_ERR(mnt)) + goto out; + sb = mnt->mnt_sb; + if (!sb || IS_ERR(sb)) + goto out; + + dpri("s%d: {perm 0x%x, id %d, cnt %lld, wbr %p}, " + "%s, dev 0x%02x%02x, flags 0x%lx, cnt %d, active %d, " + "xino %d\n", + bindex, br->br_perm, br->br_id, au_br_count(br), + br->br_wbr, au_sbtype(sb), MAJOR(sb->s_dev), MINOR(sb->s_dev), + sb->s_flags, sb->s_count, + atomic_read(&sb->s_active), !!au_xino_file(br)); + return 0; + +out: + dpri("s%d: err %ld\n", bindex, PTR_ERR(br)); + return -1; +} + +void au_dpri_sb(struct super_block *sb) +{ + struct au_sbinfo *sbinfo; + aufs_bindex_t bindex; + int err; + /* to reuduce stack size */ + struct { + struct vfsmount mnt; + struct au_branch fake; + } *a; + + /* this function can be called from magic sysrq */ + a = kzalloc(sizeof(*a), GFP_ATOMIC); + if (unlikely(!a)) { + dpri("no memory\n"); + return; + } + + a->mnt.mnt_sb = sb; + a->fake.br_path.mnt = &a->mnt; + au_br_count_init(&a->fake); + err = do_pri_br(-1, &a->fake); + au_br_count_fin(&a->fake); + kfree(a); + dpri("dev 0x%x\n", sb->s_dev); + if (err || !au_test_aufs(sb)) + return; + + sbinfo = au_sbi(sb); + if (!sbinfo) + return; + dpri("nw %d, gen %u, kobj %d\n", + atomic_read(&sbinfo->si_nowait.nw_len), sbinfo->si_generation, + kref_read(&sbinfo->si_kobj.kref)); + for (bindex = 0; bindex <= sbinfo->si_bbot; bindex++) + do_pri_br(bindex, sbinfo->si_branch[0 + bindex]); +} + +/* ---------------------------------------------------------------------- */ + +void __au_dbg_verify_dinode(struct dentry *dentry, const char *func, int line) +{ + struct inode *h_inode, *inode = d_inode(dentry); + struct dentry *h_dentry; + aufs_bindex_t bindex, bbot, bi; + + if (!inode /* || au_di(dentry)->di_lsc == AuLsc_DI_TMP */) + return; + + bbot = au_dbbot(dentry); + bi = au_ibbot(inode); + if (bi < bbot) + bbot = bi; + bindex = au_dbtop(dentry); + bi = au_ibtop(inode); + if (bi > bindex) + bindex = bi; + + for (; bindex <= bbot; bindex++) { + h_dentry = au_h_dptr(dentry, bindex); + if (!h_dentry) + continue; + h_inode = au_h_iptr(inode, bindex); + if (unlikely(h_inode != d_inode(h_dentry))) { + au_debug_on(); + AuDbg("b%d, %s:%d\n", bindex, func, line); + AuDbgDentry(dentry); + AuDbgInode(inode); + au_debug_off(); + BUG(); + } + } +} + +void au_dbg_verify_gen(struct dentry *parent, unsigned int sigen) +{ + int err, i, j; + struct au_dcsub_pages dpages; + struct au_dpage *dpage; + struct dentry **dentries; + + err = au_dpages_init(&dpages, GFP_NOFS); + AuDebugOn(err); + err = au_dcsub_pages_rev_aufs(&dpages, parent, /*do_include*/1); + AuDebugOn(err); + for (i = dpages.ndpage - 1; !err && i >= 0; i--) { + dpage = dpages.dpages + i; + dentries = dpage->dentries; + for (j = dpage->ndentry - 1; !err && j >= 0; j--) + AuDebugOn(au_digen_test(dentries[j], sigen)); + } + au_dpages_free(&dpages); +} + +void au_dbg_verify_kthread(void) +{ + if (au_wkq_test()) { + au_dbg_blocked(); + /* + * It may be recursive, but udba=notify between two aufs mounts, + * where a single ro branch is shared, is not a problem. + */ + /* WARN_ON(1); */ + } +} + +/* ---------------------------------------------------------------------- */ + +int __init au_debug_init(void) +{ + aufs_bindex_t bindex; + struct au_vdir_destr destr; + + bindex = -1; + AuDebugOn(bindex >= 0); + + destr.len = -1; + AuDebugOn(destr.len < NAME_MAX); + +#ifdef CONFIG_4KSTACKS + pr_warn("CONFIG_4KSTACKS is defined.\n"); +#endif + + return 0; +} diff --git a/fs/aufs/debug.h b/fs/aufs/debug.h new file mode 100644 index 00000000000..b80bb5a9ab4 --- /dev/null +++ b/fs/aufs/debug.h @@ -0,0 +1,226 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * debug print functions + */ + +#ifndef __AUFS_DEBUG_H__ +#define __AUFS_DEBUG_H__ + +#ifdef __KERNEL__ + +#include +#include +#include +#include + +#ifdef CONFIG_AUFS_DEBUG +#define AuDebugOn(a) BUG_ON(a) + +/* module parameter */ +extern atomic_t aufs_debug; +static inline void au_debug_on(void) +{ + atomic_inc(&aufs_debug); +} +static inline void au_debug_off(void) +{ + atomic_dec_if_positive(&aufs_debug); +} + +static inline int au_debug_test(void) +{ + return atomic_read(&aufs_debug) > 0; +} +#else +#define AuDebugOn(a) do {} while (0) +AuStubVoid(au_debug_on, void) +AuStubVoid(au_debug_off, void) +AuStubInt0(au_debug_test, void) +#endif /* CONFIG_AUFS_DEBUG */ + +#define param_check_atomic_t(name, p) __param_check(name, p, atomic_t) + +/* ---------------------------------------------------------------------- */ + +/* debug print */ + +#define AuDbg(fmt, ...) do { \ + if (au_debug_test()) \ + pr_debug("DEBUG: " fmt, ##__VA_ARGS__); \ +} while (0) +#define AuLabel(l) AuDbg(#l "\n") +#define AuIOErr(fmt, ...) pr_err("I/O Error, " fmt, ##__VA_ARGS__) +#define AuWarn1(fmt, ...) do { \ + static unsigned char _c; \ + if (!_c++) \ + pr_warn(fmt, ##__VA_ARGS__); \ +} while (0) + +#define AuErr1(fmt, ...) do { \ + static unsigned char _c; \ + if (!_c++) \ + pr_err(fmt, ##__VA_ARGS__); \ +} while (0) + +#define AuIOErr1(fmt, ...) do { \ + static unsigned char _c; \ + if (!_c++) \ + AuIOErr(fmt, ##__VA_ARGS__); \ +} while (0) + +#define AuUnsupportMsg "This operation is not supported." \ + " Please report this application to aufs-users ML." +#define AuUnsupport(fmt, ...) do { \ + pr_err(AuUnsupportMsg "\n" fmt, ##__VA_ARGS__); \ + dump_stack(); \ +} while (0) + +#define AuTraceErr(e) do { \ + if (unlikely((e) < 0)) \ + AuDbg("err %d\n", (int)(e)); \ +} while (0) + +#define AuTraceErrPtr(p) do { \ + if (IS_ERR(p)) \ + AuDbg("err %ld\n", PTR_ERR(p)); \ +} while (0) + +/* dirty macros for debug print, use with "%.*s" and caution */ +#define AuLNPair(qstr) (qstr)->len, (qstr)->name + +/* ---------------------------------------------------------------------- */ + +struct dentry; +#ifdef CONFIG_AUFS_DEBUG +extern struct mutex au_dbg_mtx; +extern char *au_plevel; +struct au_nhash; +void au_dpri_whlist(struct au_nhash *whlist); +struct au_vdir; +void au_dpri_vdir(struct au_vdir *vdir); +struct inode; +void au_dpri_inode(struct inode *inode); +void au_dpri_dalias(struct inode *inode); +void au_dpri_dentry(struct dentry *dentry); +struct file; +void au_dpri_file(struct file *filp); +struct super_block; +void au_dpri_sb(struct super_block *sb); + +#define au_dbg_verify_dinode(d) __au_dbg_verify_dinode(d, __func__, __LINE__) +void __au_dbg_verify_dinode(struct dentry *dentry, const char *func, int line); +void au_dbg_verify_gen(struct dentry *parent, unsigned int sigen); +void au_dbg_verify_kthread(void); + +int __init au_debug_init(void); + +#define AuDbgWhlist(w) do { \ + mutex_lock(&au_dbg_mtx); \ + AuDbg(#w "\n"); \ + au_dpri_whlist(w); \ + mutex_unlock(&au_dbg_mtx); \ +} while (0) + +#define AuDbgVdir(v) do { \ + mutex_lock(&au_dbg_mtx); \ + AuDbg(#v "\n"); \ + au_dpri_vdir(v); \ + mutex_unlock(&au_dbg_mtx); \ +} while (0) + +#define AuDbgInode(i) do { \ + mutex_lock(&au_dbg_mtx); \ + AuDbg(#i "\n"); \ + au_dpri_inode(i); \ + mutex_unlock(&au_dbg_mtx); \ +} while (0) + +#define AuDbgDAlias(i) do { \ + mutex_lock(&au_dbg_mtx); \ + AuDbg(#i "\n"); \ + au_dpri_dalias(i); \ + mutex_unlock(&au_dbg_mtx); \ +} while (0) + +#define AuDbgDentry(d) do { \ + mutex_lock(&au_dbg_mtx); \ + AuDbg(#d "\n"); \ + au_dpri_dentry(d); \ + mutex_unlock(&au_dbg_mtx); \ +} while (0) + +#define AuDbgFile(f) do { \ + mutex_lock(&au_dbg_mtx); \ + AuDbg(#f "\n"); \ + au_dpri_file(f); \ + mutex_unlock(&au_dbg_mtx); \ +} while (0) + +#define AuDbgSb(sb) do { \ + mutex_lock(&au_dbg_mtx); \ + AuDbg(#sb "\n"); \ + au_dpri_sb(sb); \ + mutex_unlock(&au_dbg_mtx); \ +} while (0) + +#define AuDbgSym(addr) do { \ + char sym[KSYM_SYMBOL_LEN]; \ + sprint_symbol(sym, (unsigned long)addr); \ + AuDbg("%s\n", sym); \ +} while (0) +#else +AuStubVoid(au_dbg_verify_dinode, struct dentry *dentry) +AuStubVoid(au_dbg_verify_gen, struct dentry *parent, unsigned int sigen) +AuStubVoid(au_dbg_verify_kthread, void) +AuStubInt0(__init au_debug_init, void) + +#define AuDbgWhlist(w) do {} while (0) +#define AuDbgVdir(v) do {} while (0) +#define AuDbgInode(i) do {} while (0) +#define AuDbgDAlias(i) do {} while (0) +#define AuDbgDentry(d) do {} while (0) +#define AuDbgFile(f) do {} while (0) +#define AuDbgSb(sb) do {} while (0) +#define AuDbgSym(addr) do {} while (0) +#endif /* CONFIG_AUFS_DEBUG */ + +/* ---------------------------------------------------------------------- */ + +#ifdef CONFIG_AUFS_MAGIC_SYSRQ +int __init au_sysrq_init(void); +void au_sysrq_fin(void); + +#ifdef CONFIG_HW_CONSOLE +#define au_dbg_blocked() do { \ + WARN_ON(1); \ + handle_sysrq('w'); \ +} while (0) +#else +AuStubVoid(au_dbg_blocked, void) +#endif + +#else +AuStubInt0(__init au_sysrq_init, void) +AuStubVoid(au_sysrq_fin, void) +AuStubVoid(au_dbg_blocked, void) +#endif /* CONFIG_AUFS_MAGIC_SYSRQ */ + +#endif /* __KERNEL__ */ +#endif /* __AUFS_DEBUG_H__ */ diff --git a/fs/aufs/dentry.c b/fs/aufs/dentry.c new file mode 100644 index 00000000000..a245117fa11 --- /dev/null +++ b/fs/aufs/dentry.c @@ -0,0 +1,1153 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * lookup and dentry operations + */ + +#include +#include "aufs.h" + +/* + * returns positive/negative dentry, NULL or an error. + * NULL means whiteout-ed or not-found. + */ +static struct dentry* +au_do_lookup(struct dentry *h_parent, struct dentry *dentry, + aufs_bindex_t bindex, struct au_do_lookup_args *args) +{ + struct dentry *h_dentry; + struct inode *h_inode; + struct au_branch *br; + int wh_found, opq; + unsigned char wh_able; + const unsigned char allow_neg = !!au_ftest_lkup(args->flags, ALLOW_NEG); + const unsigned char ignore_perm = !!au_ftest_lkup(args->flags, + IGNORE_PERM); + + wh_found = 0; + br = au_sbr(dentry->d_sb, bindex); + wh_able = !!au_br_whable(br->br_perm); + if (wh_able) + wh_found = au_wh_test(h_parent, &args->whname, ignore_perm); + h_dentry = ERR_PTR(wh_found); + if (!wh_found) + goto real_lookup; + if (unlikely(wh_found < 0)) + goto out; + + /* We found a whiteout */ + /* au_set_dbbot(dentry, bindex); */ + au_set_dbwh(dentry, bindex); + if (!allow_neg) + return NULL; /* success */ + +real_lookup: + if (!ignore_perm) + h_dentry = vfsub_lkup_one(args->name, h_parent); + else + h_dentry = au_sio_lkup_one(args->name, h_parent); + if (IS_ERR(h_dentry)) { + if (PTR_ERR(h_dentry) == -ENAMETOOLONG + && !allow_neg) + h_dentry = NULL; + goto out; + } + + h_inode = d_inode(h_dentry); + if (d_is_negative(h_dentry)) { + if (!allow_neg) + goto out_neg; + } else if (wh_found + || (args->type && args->type != (h_inode->i_mode & S_IFMT))) + goto out_neg; + else if (au_ftest_lkup(args->flags, DIRREN) + /* && h_inode */ + && !au_dr_lkup_h_ino(args, bindex, h_inode->i_ino)) { + AuDbg("b%d %pd ignored hi%llu\n", bindex, h_dentry, + (unsigned long long)h_inode->i_ino); + goto out_neg; + } + + if (au_dbbot(dentry) <= bindex) + au_set_dbbot(dentry, bindex); + if (au_dbtop(dentry) < 0 || bindex < au_dbtop(dentry)) + au_set_dbtop(dentry, bindex); + au_set_h_dptr(dentry, bindex, h_dentry); + + if (!d_is_dir(h_dentry) + || !wh_able + || (d_really_is_positive(dentry) && !d_is_dir(dentry))) + goto out; /* success */ + + inode_lock_shared_nested(h_inode, AuLsc_I_CHILD); + opq = au_diropq_test(h_dentry); + inode_unlock_shared(h_inode); + if (opq > 0) + au_set_dbdiropq(dentry, bindex); + else if (unlikely(opq < 0)) { + au_set_h_dptr(dentry, bindex, NULL); + h_dentry = ERR_PTR(opq); + } + goto out; + +out_neg: + dput(h_dentry); + h_dentry = NULL; +out: + return h_dentry; +} + +static int au_test_shwh(struct super_block *sb, const struct qstr *name) +{ + if (unlikely(!au_opt_test(au_mntflags(sb), SHWH) + && !strncmp(name->name, AUFS_WH_PFX, AUFS_WH_PFX_LEN))) + return -EPERM; + return 0; +} + +/* + * returns the number of lower positive dentries, + * otherwise an error. + * can be called at unlinking with @type is zero. + */ +int au_lkup_dentry(struct dentry *dentry, aufs_bindex_t btop, + unsigned int flags) +{ + int npositive, err; + aufs_bindex_t bindex, btail, bdiropq; + unsigned char isdir, dirperm1, dirren; + struct au_do_lookup_args args = { + .flags = flags, + .name = &dentry->d_name + }; + struct dentry *parent; + struct super_block *sb; + + sb = dentry->d_sb; + err = au_test_shwh(sb, args.name); + if (unlikely(err)) + goto out; + + err = au_wh_name_alloc(&args.whname, args.name); + if (unlikely(err)) + goto out; + + isdir = !!d_is_dir(dentry); + dirperm1 = !!au_opt_test(au_mntflags(sb), DIRPERM1); + dirren = !!au_opt_test(au_mntflags(sb), DIRREN); + if (dirren) + au_fset_lkup(args.flags, DIRREN); + + npositive = 0; + parent = dget_parent(dentry); + btail = au_dbtaildir(parent); + for (bindex = btop; bindex <= btail; bindex++) { + struct dentry *h_parent, *h_dentry; + struct inode *h_inode, *h_dir; + struct au_branch *br; + + h_dentry = au_h_dptr(dentry, bindex); + if (h_dentry) { + if (d_is_positive(h_dentry)) + npositive++; + break; + } + h_parent = au_h_dptr(parent, bindex); + if (!h_parent || !d_is_dir(h_parent)) + continue; + + if (dirren) { + /* if the inum matches, then use the prepared name */ + err = au_dr_lkup_name(&args, bindex); + if (unlikely(err)) + goto out_parent; + } + + h_dir = d_inode(h_parent); + inode_lock_shared_nested(h_dir, AuLsc_I_PARENT); + h_dentry = au_do_lookup(h_parent, dentry, bindex, &args); + inode_unlock_shared(h_dir); + err = PTR_ERR(h_dentry); + if (IS_ERR(h_dentry)) + goto out_parent; + if (h_dentry) + au_fclr_lkup(args.flags, ALLOW_NEG); + if (dirperm1) + au_fset_lkup(args.flags, IGNORE_PERM); + + if (au_dbwh(dentry) == bindex) + break; + if (!h_dentry) + continue; + if (d_is_negative(h_dentry)) + continue; + h_inode = d_inode(h_dentry); + npositive++; + if (!args.type) + args.type = h_inode->i_mode & S_IFMT; + if (args.type != S_IFDIR) + break; + else if (isdir) { + /* the type of lower may be different */ + bdiropq = au_dbdiropq(dentry); + if (bdiropq >= 0 && bdiropq <= bindex) + break; + } + br = au_sbr(sb, bindex); + if (dirren + && au_dr_hino_test_add(&br->br_dirren, h_inode->i_ino, + /*add_ent*/NULL)) { + /* prepare next name to lookup */ + err = au_dr_lkup(&args, dentry, bindex); + if (unlikely(err)) + goto out_parent; + } + } + + if (npositive) { + AuLabel(positive); + au_update_dbtop(dentry); + } + err = npositive; + if (unlikely(!au_opt_test(au_mntflags(sb), UDBA_NONE) + && au_dbtop(dentry) < 0)) { + err = -EIO; + AuIOErr("both of real entry and whiteout found, %pd, err %d\n", + dentry, err); + } + +out_parent: + dput(parent); + kfree(args.whname.name); + if (dirren) + au_dr_lkup_fin(&args); +out: + return err; +} + +struct dentry *au_sio_lkup_one(struct qstr *name, struct dentry *parent) +{ + struct dentry *dentry; + int wkq_err; + + if (!au_test_h_perm_sio(d_inode(parent), MAY_EXEC)) + dentry = vfsub_lkup_one(name, parent); + else { + struct vfsub_lkup_one_args args = { + .errp = &dentry, + .name = name, + .parent = parent + }; + + wkq_err = au_wkq_wait(vfsub_call_lkup_one, &args); + if (unlikely(wkq_err)) + dentry = ERR_PTR(wkq_err); + } + + return dentry; +} + +/* + * lookup @dentry on @bindex which should be negative. + */ +int au_lkup_neg(struct dentry *dentry, aufs_bindex_t bindex, int wh) +{ + int err; + struct dentry *parent, *h_parent, *h_dentry; + struct au_branch *br; + + parent = dget_parent(dentry); + h_parent = au_h_dptr(parent, bindex); + br = au_sbr(dentry->d_sb, bindex); + if (wh) + h_dentry = au_whtmp_lkup(h_parent, br, &dentry->d_name); + else + h_dentry = au_sio_lkup_one(&dentry->d_name, h_parent); + err = PTR_ERR(h_dentry); + if (IS_ERR(h_dentry)) + goto out; + if (unlikely(d_is_positive(h_dentry))) { + err = -EIO; + AuIOErr("%pd should be negative on b%d.\n", h_dentry, bindex); + dput(h_dentry); + goto out; + } + + err = 0; + if (bindex < au_dbtop(dentry)) + au_set_dbtop(dentry, bindex); + if (au_dbbot(dentry) < bindex) + au_set_dbbot(dentry, bindex); + au_set_h_dptr(dentry, bindex, h_dentry); + +out: + dput(parent); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* subset of struct inode */ +struct au_iattr { + unsigned long i_ino; + /* unsigned int i_nlink; */ + kuid_t i_uid; + kgid_t i_gid; + u64 i_version; +/* + loff_t i_size; + blkcnt_t i_blocks; +*/ + umode_t i_mode; +}; + +static void au_iattr_save(struct au_iattr *ia, struct inode *h_inode) +{ + ia->i_ino = h_inode->i_ino; + /* ia->i_nlink = h_inode->i_nlink; */ + ia->i_uid = h_inode->i_uid; + ia->i_gid = h_inode->i_gid; + ia->i_version = inode_query_iversion(h_inode); +/* + ia->i_size = h_inode->i_size; + ia->i_blocks = h_inode->i_blocks; +*/ + ia->i_mode = (h_inode->i_mode & S_IFMT); +} + +static int au_iattr_test(struct au_iattr *ia, struct inode *h_inode) +{ + return ia->i_ino != h_inode->i_ino + /* || ia->i_nlink != h_inode->i_nlink */ + || !uid_eq(ia->i_uid, h_inode->i_uid) + || !gid_eq(ia->i_gid, h_inode->i_gid) + || !inode_eq_iversion(h_inode, ia->i_version) +/* + || ia->i_size != h_inode->i_size + || ia->i_blocks != h_inode->i_blocks +*/ + || ia->i_mode != (h_inode->i_mode & S_IFMT); +} + +static int au_h_verify_dentry(struct dentry *h_dentry, struct dentry *h_parent, + struct au_branch *br) +{ + int err; + struct au_iattr ia; + struct inode *h_inode; + struct dentry *h_d; + struct super_block *h_sb; + + err = 0; + memset(&ia, -1, sizeof(ia)); + h_sb = h_dentry->d_sb; + h_inode = NULL; + if (d_is_positive(h_dentry)) { + h_inode = d_inode(h_dentry); + au_iattr_save(&ia, h_inode); + } else if (au_test_nfs(h_sb) || au_test_fuse(h_sb)) + /* nfs d_revalidate may return 0 for negative dentry */ + /* fuse d_revalidate always return 0 for negative dentry */ + goto out; + + /* main purpose is namei.c:cached_lookup() and d_revalidate */ + h_d = vfsub_lkup_one(&h_dentry->d_name, h_parent); + err = PTR_ERR(h_d); + if (IS_ERR(h_d)) + goto out; + + err = 0; + if (unlikely(h_d != h_dentry + || d_inode(h_d) != h_inode + || (h_inode && au_iattr_test(&ia, h_inode)))) + err = au_busy_or_stale(); + dput(h_d); + +out: + AuTraceErr(err); + return err; +} + +int au_h_verify(struct dentry *h_dentry, unsigned int udba, struct inode *h_dir, + struct dentry *h_parent, struct au_branch *br) +{ + int err; + + err = 0; + if (udba == AuOpt_UDBA_REVAL + && !au_test_fs_remote(h_dentry->d_sb)) { + IMustLock(h_dir); + err = (d_inode(h_dentry->d_parent) != h_dir); + } else if (udba != AuOpt_UDBA_NONE) + err = au_h_verify_dentry(h_dentry, h_parent, br); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int au_do_refresh_hdentry(struct dentry *dentry, struct dentry *parent) +{ + int err; + aufs_bindex_t new_bindex, bindex, bbot, bwh, bdiropq; + struct au_hdentry tmp, *p, *q; + struct au_dinfo *dinfo; + struct super_block *sb; + + DiMustWriteLock(dentry); + + sb = dentry->d_sb; + dinfo = au_di(dentry); + bbot = dinfo->di_bbot; + bwh = dinfo->di_bwh; + bdiropq = dinfo->di_bdiropq; + bindex = dinfo->di_btop; + p = au_hdentry(dinfo, bindex); + for (; bindex <= bbot; bindex++, p++) { + if (!p->hd_dentry) + continue; + + new_bindex = au_br_index(sb, p->hd_id); + if (new_bindex == bindex) + continue; + + if (dinfo->di_bwh == bindex) + bwh = new_bindex; + if (dinfo->di_bdiropq == bindex) + bdiropq = new_bindex; + if (new_bindex < 0) { + au_hdput(p); + p->hd_dentry = NULL; + continue; + } + + /* swap two lower dentries, and loop again */ + q = au_hdentry(dinfo, new_bindex); + tmp = *q; + *q = *p; + *p = tmp; + if (tmp.hd_dentry) { + bindex--; + p--; + } + } + + dinfo->di_bwh = -1; + if (bwh >= 0 && bwh <= au_sbbot(sb) && au_sbr_whable(sb, bwh)) + dinfo->di_bwh = bwh; + + dinfo->di_bdiropq = -1; + if (bdiropq >= 0 + && bdiropq <= au_sbbot(sb) + && au_sbr_whable(sb, bdiropq)) + dinfo->di_bdiropq = bdiropq; + + err = -EIO; + dinfo->di_btop = -1; + dinfo->di_bbot = -1; + bbot = au_dbbot(parent); + bindex = 0; + p = au_hdentry(dinfo, bindex); + for (; bindex <= bbot; bindex++, p++) + if (p->hd_dentry) { + dinfo->di_btop = bindex; + break; + } + + if (dinfo->di_btop >= 0) { + bindex = bbot; + p = au_hdentry(dinfo, bindex); + for (; bindex >= 0; bindex--, p--) + if (p->hd_dentry) { + dinfo->di_bbot = bindex; + err = 0; + break; + } + } + + return err; +} + +static void au_do_hide(struct dentry *dentry) +{ + struct inode *inode; + + if (d_really_is_positive(dentry)) { + inode = d_inode(dentry); + if (!d_is_dir(dentry)) { + if (inode->i_nlink && !d_unhashed(dentry)) + drop_nlink(inode); + } else { + clear_nlink(inode); + /* stop next lookup */ + inode->i_flags |= S_DEAD; + } + smp_mb(); /* necessary? */ + } + d_drop(dentry); +} + +static int au_hide_children(struct dentry *parent) +{ + int err, i, j, ndentry; + struct au_dcsub_pages dpages; + struct au_dpage *dpage; + struct dentry *dentry; + + err = au_dpages_init(&dpages, GFP_NOFS); + if (unlikely(err)) + goto out; + err = au_dcsub_pages(&dpages, parent, NULL, NULL); + if (unlikely(err)) + goto out_dpages; + + /* in reverse order */ + for (i = dpages.ndpage - 1; i >= 0; i--) { + dpage = dpages.dpages + i; + ndentry = dpage->ndentry; + for (j = ndentry - 1; j >= 0; j--) { + dentry = dpage->dentries[j]; + if (dentry != parent) + au_do_hide(dentry); + } + } + +out_dpages: + au_dpages_free(&dpages); +out: + return err; +} + +static void au_hide(struct dentry *dentry) +{ + int err; + + AuDbgDentry(dentry); + if (d_is_dir(dentry)) { + /* shrink_dcache_parent(dentry); */ + err = au_hide_children(dentry); + if (unlikely(err)) + AuIOErr("%pd, failed hiding children, ignored %d\n", + dentry, err); + } + au_do_hide(dentry); +} + +/* + * By adding a dirty branch, a cached dentry may be affected in various ways. + * + * a dirty branch is added + * - on the top of layers + * - in the middle of layers + * - to the bottom of layers + * + * on the added branch there exists + * - a whiteout + * - a diropq + * - a same named entry + * + exist + * * negative --> positive + * * positive --> positive + * - type is unchanged + * - type is changed + * + doesn't exist + * * negative --> negative + * * positive --> negative (rejected by au_br_del() for non-dir case) + * - none + */ +static int au_refresh_by_dinfo(struct dentry *dentry, struct au_dinfo *dinfo, + struct au_dinfo *tmp) +{ + int err; + aufs_bindex_t bindex, bbot; + struct { + struct dentry *dentry; + struct inode *inode; + mode_t mode; + } orig_h, tmp_h = { + .dentry = NULL + }; + struct au_hdentry *hd; + struct inode *inode, *h_inode; + struct dentry *h_dentry; + + err = 0; + AuDebugOn(dinfo->di_btop < 0); + orig_h.mode = 0; + orig_h.dentry = au_hdentry(dinfo, dinfo->di_btop)->hd_dentry; + orig_h.inode = NULL; + if (d_is_positive(orig_h.dentry)) { + orig_h.inode = d_inode(orig_h.dentry); + orig_h.mode = orig_h.inode->i_mode & S_IFMT; + } + if (tmp->di_btop >= 0) { + tmp_h.dentry = au_hdentry(tmp, tmp->di_btop)->hd_dentry; + if (d_is_positive(tmp_h.dentry)) { + tmp_h.inode = d_inode(tmp_h.dentry); + tmp_h.mode = tmp_h.inode->i_mode & S_IFMT; + } + } + + inode = NULL; + if (d_really_is_positive(dentry)) + inode = d_inode(dentry); + if (!orig_h.inode) { + AuDbg("nagative originally\n"); + if (inode) { + au_hide(dentry); + goto out; + } + AuDebugOn(inode); + AuDebugOn(dinfo->di_btop != dinfo->di_bbot); + AuDebugOn(dinfo->di_bdiropq != -1); + + if (!tmp_h.inode) { + AuDbg("negative --> negative\n"); + /* should have only one negative lower */ + if (tmp->di_btop >= 0 + && tmp->di_btop < dinfo->di_btop) { + AuDebugOn(tmp->di_btop != tmp->di_bbot); + AuDebugOn(dinfo->di_btop != dinfo->di_bbot); + au_set_h_dptr(dentry, dinfo->di_btop, NULL); + au_di_cp(dinfo, tmp); + hd = au_hdentry(tmp, tmp->di_btop); + au_set_h_dptr(dentry, tmp->di_btop, + dget(hd->hd_dentry)); + } + au_dbg_verify_dinode(dentry); + } else { + AuDbg("negative --> positive\n"); + /* + * similar to the behaviour of creating with bypassing + * aufs. + * unhash it in order to force an error in the + * succeeding create operation. + * we should not set S_DEAD here. + */ + d_drop(dentry); + /* au_di_swap(tmp, dinfo); */ + au_dbg_verify_dinode(dentry); + } + } else { + AuDbg("positive originally\n"); + /* inode may be NULL */ + AuDebugOn(inode && (inode->i_mode & S_IFMT) != orig_h.mode); + if (!tmp_h.inode) { + AuDbg("positive --> negative\n"); + /* or bypassing aufs */ + au_hide(dentry); + if (tmp->di_bwh >= 0 && tmp->di_bwh <= dinfo->di_btop) + dinfo->di_bwh = tmp->di_bwh; + if (inode) + err = au_refresh_hinode_self(inode); + au_dbg_verify_dinode(dentry); + } else if (orig_h.mode == tmp_h.mode) { + AuDbg("positive --> positive, same type\n"); + if (!S_ISDIR(orig_h.mode) + && dinfo->di_btop > tmp->di_btop) { + /* + * similar to the behaviour of removing and + * creating. + */ + au_hide(dentry); + if (inode) + err = au_refresh_hinode_self(inode); + au_dbg_verify_dinode(dentry); + } else { + /* fill empty slots */ + if (dinfo->di_btop > tmp->di_btop) + dinfo->di_btop = tmp->di_btop; + if (dinfo->di_bbot < tmp->di_bbot) + dinfo->di_bbot = tmp->di_bbot; + dinfo->di_bwh = tmp->di_bwh; + dinfo->di_bdiropq = tmp->di_bdiropq; + bbot = dinfo->di_bbot; + bindex = tmp->di_btop; + hd = au_hdentry(tmp, bindex); + for (; bindex <= bbot; bindex++, hd++) { + if (au_h_dptr(dentry, bindex)) + continue; + h_dentry = hd->hd_dentry; + if (!h_dentry) + continue; + AuDebugOn(d_is_negative(h_dentry)); + h_inode = d_inode(h_dentry); + AuDebugOn(orig_h.mode + != (h_inode->i_mode + & S_IFMT)); + au_set_h_dptr(dentry, bindex, + dget(h_dentry)); + } + if (inode) + err = au_refresh_hinode(inode, dentry); + au_dbg_verify_dinode(dentry); + } + } else { + AuDbg("positive --> positive, different type\n"); + /* similar to the behaviour of removing and creating */ + au_hide(dentry); + if (inode) + err = au_refresh_hinode_self(inode); + au_dbg_verify_dinode(dentry); + } + } + +out: + return err; +} + +void au_refresh_dop(struct dentry *dentry, int force_reval) +{ + const struct dentry_operations *dop + = force_reval ? &aufs_dop : dentry->d_sb->s_d_op; + static const unsigned int mask + = DCACHE_OP_REVALIDATE | DCACHE_OP_WEAK_REVALIDATE; + + BUILD_BUG_ON(sizeof(mask) != sizeof(dentry->d_flags)); + + if (dentry->d_op == dop) + return; + + AuDbg("%pd\n", dentry); + spin_lock(&dentry->d_lock); + if (dop == &aufs_dop) + dentry->d_flags |= mask; + else + dentry->d_flags &= ~mask; + dentry->d_op = dop; + spin_unlock(&dentry->d_lock); +} + +int au_refresh_dentry(struct dentry *dentry, struct dentry *parent) +{ + int err, ebrange, nbr; + unsigned int sigen; + struct au_dinfo *dinfo, *tmp; + struct super_block *sb; + struct inode *inode; + + DiMustWriteLock(dentry); + AuDebugOn(IS_ROOT(dentry)); + AuDebugOn(d_really_is_negative(parent)); + + sb = dentry->d_sb; + sigen = au_sigen(sb); + err = au_digen_test(parent, sigen); + if (unlikely(err)) + goto out; + + nbr = au_sbbot(sb) + 1; + dinfo = au_di(dentry); + err = au_di_realloc(dinfo, nbr, /*may_shrink*/0); + if (unlikely(err)) + goto out; + ebrange = au_dbrange_test(dentry); + if (!ebrange) + ebrange = au_do_refresh_hdentry(dentry, parent); + + if (d_unhashed(dentry) || ebrange /* || dinfo->di_tmpfile */) { + AuDebugOn(au_dbtop(dentry) < 0 && au_dbbot(dentry) >= 0); + if (d_really_is_positive(dentry)) { + inode = d_inode(dentry); + err = au_refresh_hinode_self(inode); + } + au_dbg_verify_dinode(dentry); + if (!err) + goto out_dgen; /* success */ + goto out; + } + + /* temporary dinfo */ + AuDbgDentry(dentry); + err = -ENOMEM; + tmp = au_di_alloc(sb, AuLsc_DI_TMP); + if (unlikely(!tmp)) + goto out; + au_di_swap(tmp, dinfo); + /* returns the number of positive dentries */ + /* + * if current working dir is removed, it returns an error. + * but the dentry is legal. + */ + err = au_lkup_dentry(dentry, /*btop*/0, AuLkup_ALLOW_NEG); + AuDbgDentry(dentry); + au_di_swap(tmp, dinfo); + if (err == -ENOENT) + err = 0; + if (err >= 0) { + /* compare/refresh by dinfo */ + AuDbgDentry(dentry); + err = au_refresh_by_dinfo(dentry, dinfo, tmp); + au_dbg_verify_dinode(dentry); + AuTraceErr(err); + } + au_di_realloc(dinfo, nbr, /*may_shrink*/1); /* harmless if err */ + au_rw_write_unlock(&tmp->di_rwsem); + au_di_free(tmp); + if (unlikely(err)) + goto out; + +out_dgen: + au_update_digen(dentry); +out: + if (unlikely(err && !(dentry->d_flags & DCACHE_NFSFS_RENAMED))) { + AuIOErr("failed refreshing %pd, %d\n", dentry, err); + AuDbgDentry(dentry); + } + AuTraceErr(err); + return err; +} + +static int au_do_h_d_reval(struct dentry *h_dentry, unsigned int flags, + struct dentry *dentry, aufs_bindex_t bindex) +{ + int err, valid; + + err = 0; + if (!(h_dentry->d_flags & DCACHE_OP_REVALIDATE)) + goto out; + + AuDbg("b%d\n", bindex); + /* + * gave up supporting LOOKUP_CREATE/OPEN for lower fs, + * due to whiteout and branch permission. + */ + flags &= ~(/*LOOKUP_PARENT |*/ LOOKUP_OPEN | LOOKUP_CREATE + | LOOKUP_FOLLOW | LOOKUP_EXCL); + /* it may return tri-state */ + valid = h_dentry->d_op->d_revalidate(h_dentry, flags); + + if (unlikely(valid < 0)) + err = valid; + else if (!valid) + err = -EINVAL; + +out: + AuTraceErr(err); + return err; +} + +/* todo: remove this */ +static int h_d_revalidate(struct dentry *dentry, struct inode *inode, + unsigned int flags, int do_udba, int dirren) +{ + int err; + umode_t mode, h_mode; + aufs_bindex_t bindex, btail, btop, ibs, ibe; + unsigned char plus, unhashed, is_root, h_plus, h_nfs, tmpfile; + struct inode *h_inode, *h_cached_inode; + struct dentry *h_dentry; + struct qstr *name, *h_name; + + err = 0; + plus = 0; + mode = 0; + ibs = -1; + ibe = -1; + unhashed = !!d_unhashed(dentry); + is_root = !!IS_ROOT(dentry); + name = &dentry->d_name; + tmpfile = au_di(dentry)->di_tmpfile; + + /* + * Theoretically, REVAL test should be unnecessary in case of + * {FS,I}NOTIFY. + * But {fs,i}notify doesn't fire some necessary events, + * IN_ATTRIB for atime/nlink/pageio + * Let's do REVAL test too. + */ + if (do_udba && inode) { + mode = (inode->i_mode & S_IFMT); + plus = (inode->i_nlink > 0); + ibs = au_ibtop(inode); + ibe = au_ibbot(inode); + } + + btop = au_dbtop(dentry); + btail = btop; + if (inode && S_ISDIR(inode->i_mode)) + btail = au_dbtaildir(dentry); + for (bindex = btop; bindex <= btail; bindex++) { + h_dentry = au_h_dptr(dentry, bindex); + if (!h_dentry) + continue; + + AuDbg("b%d, %pd\n", bindex, h_dentry); + h_nfs = !!au_test_nfs(h_dentry->d_sb); + spin_lock(&h_dentry->d_lock); + h_name = &h_dentry->d_name; + if (unlikely(do_udba + && !is_root + && ((!h_nfs + && (unhashed != !!d_unhashed(h_dentry) + || (!tmpfile && !dirren + && !au_qstreq(name, h_name)) + )) + || (h_nfs + && !(flags & LOOKUP_OPEN) + && (h_dentry->d_flags + & DCACHE_NFSFS_RENAMED))) + )) { + int h_unhashed; + + h_unhashed = d_unhashed(h_dentry); + spin_unlock(&h_dentry->d_lock); + AuDbg("unhash 0x%x 0x%x, %pd %pd\n", + unhashed, h_unhashed, dentry, h_dentry); + goto err; + } + spin_unlock(&h_dentry->d_lock); + + err = au_do_h_d_reval(h_dentry, flags, dentry, bindex); + if (unlikely(err)) + /* do not goto err, to keep the errno */ + break; + + /* todo: plink too? */ + if (!do_udba) + continue; + + /* UDBA tests */ + if (unlikely(!!inode != d_is_positive(h_dentry))) + goto err; + + h_inode = NULL; + if (d_is_positive(h_dentry)) + h_inode = d_inode(h_dentry); + h_plus = plus; + h_mode = mode; + h_cached_inode = h_inode; + if (h_inode) { + h_mode = (h_inode->i_mode & S_IFMT); + h_plus = (h_inode->i_nlink > 0); + } + if (inode && ibs <= bindex && bindex <= ibe) + h_cached_inode = au_h_iptr(inode, bindex); + + if (!h_nfs) { + if (unlikely(plus != h_plus && !tmpfile)) + goto err; + } else { + if (unlikely(!(h_dentry->d_flags & DCACHE_NFSFS_RENAMED) + && !is_root + && !IS_ROOT(h_dentry) + && unhashed != d_unhashed(h_dentry))) + goto err; + } + if (unlikely(mode != h_mode + || h_cached_inode != h_inode)) + goto err; + continue; + +err: + err = -EINVAL; + break; + } + + AuTraceErr(err); + return err; +} + +/* todo: consolidate with do_refresh() and au_reval_for_attr() */ +static int simple_reval_dpath(struct dentry *dentry, unsigned int sigen) +{ + int err; + struct dentry *parent; + + if (!au_digen_test(dentry, sigen)) + return 0; + + parent = dget_parent(dentry); + di_read_lock_parent(parent, AuLock_IR); + AuDebugOn(au_digen_test(parent, sigen)); + au_dbg_verify_gen(parent, sigen); + err = au_refresh_dentry(dentry, parent); + di_read_unlock(parent, AuLock_IR); + dput(parent); + AuTraceErr(err); + return err; +} + +int au_reval_dpath(struct dentry *dentry, unsigned int sigen) +{ + int err; + struct dentry *d, *parent; + + if (!au_ftest_si(au_sbi(dentry->d_sb), FAILED_REFRESH_DIR)) + return simple_reval_dpath(dentry, sigen); + + /* slow loop, keep it simple and stupid */ + /* cf: au_cpup_dirs() */ + err = 0; + parent = NULL; + while (au_digen_test(dentry, sigen)) { + d = dentry; + while (1) { + dput(parent); + parent = dget_parent(d); + if (!au_digen_test(parent, sigen)) + break; + d = parent; + } + + if (d != dentry) + di_write_lock_child2(d); + + /* someone might update our dentry while we were sleeping */ + if (au_digen_test(d, sigen)) { + /* + * todo: consolidate with simple_reval_dpath(), + * do_refresh() and au_reval_for_attr(). + */ + di_read_lock_parent(parent, AuLock_IR); + err = au_refresh_dentry(d, parent); + di_read_unlock(parent, AuLock_IR); + } + + if (d != dentry) + di_write_unlock(d); + dput(parent); + if (unlikely(err)) + break; + } + + return err; +} + +/* + * if valid returns 1, otherwise 0. + */ +static int aufs_d_revalidate(struct dentry *dentry, unsigned int flags) +{ + int valid, err; + unsigned int sigen; + unsigned char do_udba, dirren; + struct super_block *sb; + struct inode *inode; + + /* todo: support rcu-walk? */ + if (flags & LOOKUP_RCU) + return -ECHILD; + + valid = 0; + if (unlikely(!au_di(dentry))) + goto out; + + valid = 1; + sb = dentry->d_sb; + /* + * todo: very ugly + * i_mutex of parent dir may be held, + * but we should not return 'invalid' due to busy. + */ + err = aufs_read_lock(dentry, AuLock_FLUSH | AuLock_DW | AuLock_NOPLM); + if (unlikely(err)) { + valid = err; + AuTraceErr(err); + goto out; + } + inode = NULL; + if (d_really_is_positive(dentry)) + inode = d_inode(dentry); + if (unlikely(inode && au_is_bad_inode(inode))) { + err = -EINVAL; + AuTraceErr(err); + goto out_dgrade; + } + if (unlikely(au_dbrange_test(dentry))) { + err = -EINVAL; + AuTraceErr(err); + goto out_dgrade; + } + + sigen = au_sigen(sb); + if (au_digen_test(dentry, sigen)) { + AuDebugOn(IS_ROOT(dentry)); + err = au_reval_dpath(dentry, sigen); + if (unlikely(err)) { + AuTraceErr(err); + goto out_dgrade; + } + } + di_downgrade_lock(dentry, AuLock_IR); + + err = -EINVAL; + if (!(flags & (LOOKUP_OPEN | LOOKUP_EMPTY)) + && inode + && !(inode->i_state && I_LINKABLE) + && (IS_DEADDIR(inode) || !inode->i_nlink)) { + AuTraceErr(err); + goto out_inval; + } + + do_udba = !au_opt_test(au_mntflags(sb), UDBA_NONE); + if (do_udba && inode) { + aufs_bindex_t btop = au_ibtop(inode); + struct inode *h_inode; + + if (btop >= 0) { + h_inode = au_h_iptr(inode, btop); + if (h_inode && au_test_higen(inode, h_inode)) { + AuTraceErr(err); + goto out_inval; + } + } + } + + dirren = !!au_opt_test(au_mntflags(sb), DIRREN); + err = h_d_revalidate(dentry, inode, flags, do_udba, dirren); + if (unlikely(!err && do_udba && au_dbtop(dentry) < 0)) { + err = -EIO; + AuDbg("both of real entry and whiteout found, %p, err %d\n", + dentry, err); + } + goto out_inval; + +out_dgrade: + di_downgrade_lock(dentry, AuLock_IR); +out_inval: + aufs_read_unlock(dentry, AuLock_IR); + AuTraceErr(err); + valid = !err; +out: + if (!valid) { + AuDbg("%pd invalid, %d\n", dentry, valid); + d_drop(dentry); + } + return valid; +} + +static void aufs_d_release(struct dentry *dentry) +{ + if (au_di(dentry)) { + au_di_fin(dentry); + au_hn_di_reinit(dentry); + } +} + +const struct dentry_operations aufs_dop = { + .d_revalidate = aufs_d_revalidate, + .d_weak_revalidate = aufs_d_revalidate, + .d_release = aufs_d_release +}; + +/* aufs_dop without d_revalidate */ +const struct dentry_operations aufs_dop_noreval = { + .d_release = aufs_d_release +}; diff --git a/fs/aufs/dentry.h b/fs/aufs/dentry.h new file mode 100644 index 00000000000..adc2ac99795 --- /dev/null +++ b/fs/aufs/dentry.h @@ -0,0 +1,267 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * lookup and dentry operations + */ + +#ifndef __AUFS_DENTRY_H__ +#define __AUFS_DENTRY_H__ + +#ifdef __KERNEL__ + +#include +#include "dirren.h" +#include "rwsem.h" + +struct au_hdentry { + struct dentry *hd_dentry; + aufs_bindex_t hd_id; +}; + +struct au_dinfo { + atomic_t di_generation; + + struct au_rwsem di_rwsem; + aufs_bindex_t di_btop, di_bbot, di_bwh, di_bdiropq; + unsigned char di_tmpfile; /* to allow the different name */ + struct au_hdentry *di_hdentry; +} ____cacheline_aligned_in_smp; + +/* ---------------------------------------------------------------------- */ + +/* flags for au_lkup_dentry() */ +#define AuLkup_ALLOW_NEG 1 +#define AuLkup_IGNORE_PERM (1 << 1) +#define AuLkup_DIRREN (1 << 2) +#define au_ftest_lkup(flags, name) ((flags) & AuLkup_##name) +#define au_fset_lkup(flags, name) \ + do { (flags) |= AuLkup_##name; } while (0) +#define au_fclr_lkup(flags, name) \ + do { (flags) &= ~AuLkup_##name; } while (0) + +#ifndef CONFIG_AUFS_DIRREN +#undef AuLkup_DIRREN +#define AuLkup_DIRREN 0 +#endif + +struct au_do_lookup_args { + unsigned int flags; + mode_t type; + struct qstr whname, *name; + struct au_dr_lookup dirren; +}; + +/* ---------------------------------------------------------------------- */ + +/* dentry.c */ +extern const struct dentry_operations aufs_dop, aufs_dop_noreval; +struct au_branch; +struct dentry *au_sio_lkup_one(struct qstr *name, struct dentry *parent); +int au_h_verify(struct dentry *h_dentry, unsigned int udba, struct inode *h_dir, + struct dentry *h_parent, struct au_branch *br); + +int au_lkup_dentry(struct dentry *dentry, aufs_bindex_t btop, + unsigned int flags); +int au_lkup_neg(struct dentry *dentry, aufs_bindex_t bindex, int wh); +int au_refresh_dentry(struct dentry *dentry, struct dentry *parent); +int au_reval_dpath(struct dentry *dentry, unsigned int sigen); +void au_refresh_dop(struct dentry *dentry, int force_reval); + +/* dinfo.c */ +void au_di_init_once(void *_di); +struct au_dinfo *au_di_alloc(struct super_block *sb, unsigned int lsc); +void au_di_free(struct au_dinfo *dinfo); +void au_di_swap(struct au_dinfo *a, struct au_dinfo *b); +void au_di_cp(struct au_dinfo *dst, struct au_dinfo *src); +int au_di_init(struct dentry *dentry); +void au_di_fin(struct dentry *dentry); +int au_di_realloc(struct au_dinfo *dinfo, int nbr, int may_shrink); + +void di_read_lock(struct dentry *d, int flags, unsigned int lsc); +void di_read_unlock(struct dentry *d, int flags); +void di_downgrade_lock(struct dentry *d, int flags); +void di_write_lock(struct dentry *d, unsigned int lsc); +void di_write_unlock(struct dentry *d); +void di_write_lock2_child(struct dentry *d1, struct dentry *d2, int isdir); +void di_write_lock2_parent(struct dentry *d1, struct dentry *d2, int isdir); +void di_write_unlock2(struct dentry *d1, struct dentry *d2); + +struct dentry *au_h_dptr(struct dentry *dentry, aufs_bindex_t bindex); +struct dentry *au_h_d_alias(struct dentry *dentry, aufs_bindex_t bindex); +aufs_bindex_t au_dbtail(struct dentry *dentry); +aufs_bindex_t au_dbtaildir(struct dentry *dentry); + +void au_set_h_dptr(struct dentry *dentry, aufs_bindex_t bindex, + struct dentry *h_dentry); +int au_digen_test(struct dentry *dentry, unsigned int sigen); +int au_dbrange_test(struct dentry *dentry); +void au_update_digen(struct dentry *dentry); +void au_update_dbrange(struct dentry *dentry, int do_put_zero); +void au_update_dbtop(struct dentry *dentry); +void au_update_dbbot(struct dentry *dentry); +int au_find_dbindex(struct dentry *dentry, struct dentry *h_dentry); + +/* ---------------------------------------------------------------------- */ + +static inline struct au_dinfo *au_di(struct dentry *dentry) +{ + return dentry->d_fsdata; +} + +/* ---------------------------------------------------------------------- */ + +/* lock subclass for dinfo */ +enum { + AuLsc_DI_CHILD, /* child first */ + AuLsc_DI_CHILD2, /* rename(2), link(2), and cpup at hnotify */ + AuLsc_DI_CHILD3, /* copyup dirs */ + AuLsc_DI_PARENT, + AuLsc_DI_PARENT2, + AuLsc_DI_PARENT3, + AuLsc_DI_TMP /* temp for replacing dinfo */ +}; + +/* + * di_read_lock_child, di_write_lock_child, + * di_read_lock_child2, di_write_lock_child2, + * di_read_lock_child3, di_write_lock_child3, + * di_read_lock_parent, di_write_lock_parent, + * di_read_lock_parent2, di_write_lock_parent2, + * di_read_lock_parent3, di_write_lock_parent3, + */ +#define AuReadLockFunc(name, lsc) \ +static inline void di_read_lock_##name(struct dentry *d, int flags) \ +{ di_read_lock(d, flags, AuLsc_DI_##lsc); } + +#define AuWriteLockFunc(name, lsc) \ +static inline void di_write_lock_##name(struct dentry *d) \ +{ di_write_lock(d, AuLsc_DI_##lsc); } + +#define AuRWLockFuncs(name, lsc) \ + AuReadLockFunc(name, lsc) \ + AuWriteLockFunc(name, lsc) + +AuRWLockFuncs(child, CHILD); +AuRWLockFuncs(child2, CHILD2); +AuRWLockFuncs(child3, CHILD3); +AuRWLockFuncs(parent, PARENT); +AuRWLockFuncs(parent2, PARENT2); +AuRWLockFuncs(parent3, PARENT3); + +#undef AuReadLockFunc +#undef AuWriteLockFunc +#undef AuRWLockFuncs + +#define DiMustNoWaiters(d) AuRwMustNoWaiters(&au_di(d)->di_rwsem) +#define DiMustAnyLock(d) AuRwMustAnyLock(&au_di(d)->di_rwsem) +#define DiMustWriteLock(d) AuRwMustWriteLock(&au_di(d)->di_rwsem) + +/* ---------------------------------------------------------------------- */ + +/* todo: memory barrier? */ +static inline unsigned int au_digen(struct dentry *d) +{ + return atomic_read(&au_di(d)->di_generation); +} + +static inline void au_h_dentry_init(struct au_hdentry *hdentry) +{ + hdentry->hd_dentry = NULL; +} + +static inline struct au_hdentry *au_hdentry(struct au_dinfo *di, + aufs_bindex_t bindex) +{ + return di->di_hdentry + bindex; +} + +static inline void au_hdput(struct au_hdentry *hd) +{ + if (hd) + dput(hd->hd_dentry); +} + +static inline aufs_bindex_t au_dbtop(struct dentry *dentry) +{ + DiMustAnyLock(dentry); + return au_di(dentry)->di_btop; +} + +static inline aufs_bindex_t au_dbbot(struct dentry *dentry) +{ + DiMustAnyLock(dentry); + return au_di(dentry)->di_bbot; +} + +static inline aufs_bindex_t au_dbwh(struct dentry *dentry) +{ + DiMustAnyLock(dentry); + return au_di(dentry)->di_bwh; +} + +static inline aufs_bindex_t au_dbdiropq(struct dentry *dentry) +{ + DiMustAnyLock(dentry); + return au_di(dentry)->di_bdiropq; +} + +/* todo: hard/soft set? */ +static inline void au_set_dbtop(struct dentry *dentry, aufs_bindex_t bindex) +{ + DiMustWriteLock(dentry); + au_di(dentry)->di_btop = bindex; +} + +static inline void au_set_dbbot(struct dentry *dentry, aufs_bindex_t bindex) +{ + DiMustWriteLock(dentry); + au_di(dentry)->di_bbot = bindex; +} + +static inline void au_set_dbwh(struct dentry *dentry, aufs_bindex_t bindex) +{ + DiMustWriteLock(dentry); + /* dbwh can be outside of btop - bbot range */ + au_di(dentry)->di_bwh = bindex; +} + +static inline void au_set_dbdiropq(struct dentry *dentry, aufs_bindex_t bindex) +{ + DiMustWriteLock(dentry); + au_di(dentry)->di_bdiropq = bindex; +} + +/* ---------------------------------------------------------------------- */ + +#ifdef CONFIG_AUFS_HNOTIFY +static inline void au_digen_dec(struct dentry *d) +{ + atomic_dec(&au_di(d)->di_generation); +} + +static inline void au_hn_di_reinit(struct dentry *dentry) +{ + dentry->d_fsdata = NULL; +} +#else +AuStubVoid(au_hn_di_reinit, struct dentry *dentry __maybe_unused) +#endif /* CONFIG_AUFS_HNOTIFY */ + +#endif /* __KERNEL__ */ +#endif /* __AUFS_DENTRY_H__ */ diff --git a/fs/aufs/dinfo.c b/fs/aufs/dinfo.c new file mode 100644 index 00000000000..7e56fe742f1 --- /dev/null +++ b/fs/aufs/dinfo.c @@ -0,0 +1,554 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * dentry private data + */ + +#include "aufs.h" + +void au_di_init_once(void *_dinfo) +{ + struct au_dinfo *dinfo = _dinfo; + + au_rw_init(&dinfo->di_rwsem); +} + +struct au_dinfo *au_di_alloc(struct super_block *sb, unsigned int lsc) +{ + struct au_dinfo *dinfo; + int nbr, i; + + dinfo = au_cache_alloc_dinfo(); + if (unlikely(!dinfo)) + goto out; + + nbr = au_sbbot(sb) + 1; + if (nbr <= 0) + nbr = 1; + dinfo->di_hdentry = kcalloc(nbr, sizeof(*dinfo->di_hdentry), GFP_NOFS); + if (dinfo->di_hdentry) { + au_rw_write_lock_nested(&dinfo->di_rwsem, lsc); + dinfo->di_btop = -1; + dinfo->di_bbot = -1; + dinfo->di_bwh = -1; + dinfo->di_bdiropq = -1; + dinfo->di_tmpfile = 0; + for (i = 0; i < nbr; i++) + dinfo->di_hdentry[i].hd_id = -1; + goto out; + } + + au_cache_free_dinfo(dinfo); + dinfo = NULL; + +out: + return dinfo; +} + +void au_di_free(struct au_dinfo *dinfo) +{ + struct au_hdentry *p; + aufs_bindex_t bbot, bindex; + + /* dentry may not be revalidated */ + bindex = dinfo->di_btop; + if (bindex >= 0) { + bbot = dinfo->di_bbot; + p = au_hdentry(dinfo, bindex); + while (bindex++ <= bbot) + au_hdput(p++); + } + kfree(dinfo->di_hdentry); + au_cache_free_dinfo(dinfo); +} + +void au_di_swap(struct au_dinfo *a, struct au_dinfo *b) +{ + struct au_hdentry *p; + aufs_bindex_t bi; + + AuRwMustWriteLock(&a->di_rwsem); + AuRwMustWriteLock(&b->di_rwsem); + +#define DiSwap(v, name) \ + do { \ + v = a->di_##name; \ + a->di_##name = b->di_##name; \ + b->di_##name = v; \ + } while (0) + + DiSwap(p, hdentry); + DiSwap(bi, btop); + DiSwap(bi, bbot); + DiSwap(bi, bwh); + DiSwap(bi, bdiropq); + /* smp_mb(); */ + +#undef DiSwap +} + +void au_di_cp(struct au_dinfo *dst, struct au_dinfo *src) +{ + AuRwMustWriteLock(&dst->di_rwsem); + AuRwMustWriteLock(&src->di_rwsem); + + dst->di_btop = src->di_btop; + dst->di_bbot = src->di_bbot; + dst->di_bwh = src->di_bwh; + dst->di_bdiropq = src->di_bdiropq; + /* smp_mb(); */ +} + +int au_di_init(struct dentry *dentry) +{ + int err; + struct super_block *sb; + struct au_dinfo *dinfo; + + err = 0; + sb = dentry->d_sb; + dinfo = au_di_alloc(sb, AuLsc_DI_CHILD); + if (dinfo) { + atomic_set(&dinfo->di_generation, au_sigen(sb)); + /* smp_mb(); */ /* atomic_set */ + dentry->d_fsdata = dinfo; + } else + err = -ENOMEM; + + return err; +} + +void au_di_fin(struct dentry *dentry) +{ + struct au_dinfo *dinfo; + + dinfo = au_di(dentry); + AuRwDestroy(&dinfo->di_rwsem); + au_di_free(dinfo); +} + +int au_di_realloc(struct au_dinfo *dinfo, int nbr, int may_shrink) +{ + int err, sz; + struct au_hdentry *hdp; + + AuRwMustWriteLock(&dinfo->di_rwsem); + + err = -ENOMEM; + sz = sizeof(*hdp) * (dinfo->di_bbot + 1); + if (!sz) + sz = sizeof(*hdp); + hdp = au_kzrealloc(dinfo->di_hdentry, sz, sizeof(*hdp) * nbr, GFP_NOFS, + may_shrink); + if (hdp) { + dinfo->di_hdentry = hdp; + err = 0; + } + + return err; +} + +/* ---------------------------------------------------------------------- */ + +static void do_ii_write_lock(struct inode *inode, unsigned int lsc) +{ + switch (lsc) { + case AuLsc_DI_CHILD: + ii_write_lock_child(inode); + break; + case AuLsc_DI_CHILD2: + ii_write_lock_child2(inode); + break; + case AuLsc_DI_CHILD3: + ii_write_lock_child3(inode); + break; + case AuLsc_DI_PARENT: + ii_write_lock_parent(inode); + break; + case AuLsc_DI_PARENT2: + ii_write_lock_parent2(inode); + break; + case AuLsc_DI_PARENT3: + ii_write_lock_parent3(inode); + break; + default: + BUG(); + } +} + +static void do_ii_read_lock(struct inode *inode, unsigned int lsc) +{ + switch (lsc) { + case AuLsc_DI_CHILD: + ii_read_lock_child(inode); + break; + case AuLsc_DI_CHILD2: + ii_read_lock_child2(inode); + break; + case AuLsc_DI_CHILD3: + ii_read_lock_child3(inode); + break; + case AuLsc_DI_PARENT: + ii_read_lock_parent(inode); + break; + case AuLsc_DI_PARENT2: + ii_read_lock_parent2(inode); + break; + case AuLsc_DI_PARENT3: + ii_read_lock_parent3(inode); + break; + default: + BUG(); + } +} + +void di_read_lock(struct dentry *d, int flags, unsigned int lsc) +{ + struct inode *inode; + + au_rw_read_lock_nested(&au_di(d)->di_rwsem, lsc); + if (d_really_is_positive(d)) { + inode = d_inode(d); + if (au_ftest_lock(flags, IW)) + do_ii_write_lock(inode, lsc); + else if (au_ftest_lock(flags, IR)) + do_ii_read_lock(inode, lsc); + } +} + +void di_read_unlock(struct dentry *d, int flags) +{ + struct inode *inode; + + if (d_really_is_positive(d)) { + inode = d_inode(d); + if (au_ftest_lock(flags, IW)) { + au_dbg_verify_dinode(d); + ii_write_unlock(inode); + } else if (au_ftest_lock(flags, IR)) { + au_dbg_verify_dinode(d); + ii_read_unlock(inode); + } + } + au_rw_read_unlock(&au_di(d)->di_rwsem); +} + +void di_downgrade_lock(struct dentry *d, int flags) +{ + if (d_really_is_positive(d) && au_ftest_lock(flags, IR)) + ii_downgrade_lock(d_inode(d)); + au_rw_dgrade_lock(&au_di(d)->di_rwsem); +} + +void di_write_lock(struct dentry *d, unsigned int lsc) +{ + au_rw_write_lock_nested(&au_di(d)->di_rwsem, lsc); + if (d_really_is_positive(d)) + do_ii_write_lock(d_inode(d), lsc); +} + +void di_write_unlock(struct dentry *d) +{ + au_dbg_verify_dinode(d); + if (d_really_is_positive(d)) + ii_write_unlock(d_inode(d)); + au_rw_write_unlock(&au_di(d)->di_rwsem); +} + +void di_write_lock2_child(struct dentry *d1, struct dentry *d2, int isdir) +{ + AuDebugOn(d1 == d2 + || d_inode(d1) == d_inode(d2) + || d1->d_sb != d2->d_sb); + + if ((isdir && au_test_subdir(d1, d2)) + || d1 < d2) { + di_write_lock_child(d1); + di_write_lock_child2(d2); + } else { + di_write_lock_child(d2); + di_write_lock_child2(d1); + } +} + +void di_write_lock2_parent(struct dentry *d1, struct dentry *d2, int isdir) +{ + AuDebugOn(d1 == d2 + || d_inode(d1) == d_inode(d2) + || d1->d_sb != d2->d_sb); + + if ((isdir && au_test_subdir(d1, d2)) + || d1 < d2) { + di_write_lock_parent(d1); + di_write_lock_parent2(d2); + } else { + di_write_lock_parent(d2); + di_write_lock_parent2(d1); + } +} + +void di_write_unlock2(struct dentry *d1, struct dentry *d2) +{ + di_write_unlock(d1); + if (d_inode(d1) == d_inode(d2)) + au_rw_write_unlock(&au_di(d2)->di_rwsem); + else + di_write_unlock(d2); +} + +/* ---------------------------------------------------------------------- */ + +struct dentry *au_h_dptr(struct dentry *dentry, aufs_bindex_t bindex) +{ + struct dentry *d; + + DiMustAnyLock(dentry); + + if (au_dbtop(dentry) < 0 || bindex < au_dbtop(dentry)) + return NULL; + AuDebugOn(bindex < 0); + d = au_hdentry(au_di(dentry), bindex)->hd_dentry; + AuDebugOn(d && au_dcount(d) <= 0); + return d; +} + +/* + * extended version of au_h_dptr(). + * returns a hashed and positive (or linkable) h_dentry in bindex, NULL, or + * error. + */ +struct dentry *au_h_d_alias(struct dentry *dentry, aufs_bindex_t bindex) +{ + struct dentry *h_dentry; + struct inode *inode, *h_inode; + + AuDebugOn(d_really_is_negative(dentry)); + + h_dentry = NULL; + if (au_dbtop(dentry) <= bindex + && bindex <= au_dbbot(dentry)) + h_dentry = au_h_dptr(dentry, bindex); + if (h_dentry && !au_d_linkable(h_dentry)) { + dget(h_dentry); + goto out; /* success */ + } + + inode = d_inode(dentry); + AuDebugOn(bindex < au_ibtop(inode)); + AuDebugOn(au_ibbot(inode) < bindex); + h_inode = au_h_iptr(inode, bindex); + h_dentry = d_find_alias(h_inode); + if (h_dentry) { + if (!IS_ERR(h_dentry)) { + if (!au_d_linkable(h_dentry)) + goto out; /* success */ + dput(h_dentry); + } else + goto out; + } + + if (au_opt_test(au_mntflags(dentry->d_sb), PLINK)) { + h_dentry = au_plink_lkup(inode, bindex); + AuDebugOn(!h_dentry); + if (!IS_ERR(h_dentry)) { + if (!au_d_hashed_positive(h_dentry)) + goto out; /* success */ + dput(h_dentry); + h_dentry = NULL; + } + } + +out: + AuDbgDentry(h_dentry); + return h_dentry; +} + +aufs_bindex_t au_dbtail(struct dentry *dentry) +{ + aufs_bindex_t bbot, bwh; + + bbot = au_dbbot(dentry); + if (0 <= bbot) { + bwh = au_dbwh(dentry); + if (!bwh) + return bwh; + if (0 < bwh && bwh < bbot) + return bwh - 1; + } + return bbot; +} + +aufs_bindex_t au_dbtaildir(struct dentry *dentry) +{ + aufs_bindex_t bbot, bopq; + + bbot = au_dbtail(dentry); + if (0 <= bbot) { + bopq = au_dbdiropq(dentry); + if (0 <= bopq && bopq < bbot) + bbot = bopq; + } + return bbot; +} + +/* ---------------------------------------------------------------------- */ + +void au_set_h_dptr(struct dentry *dentry, aufs_bindex_t bindex, + struct dentry *h_dentry) +{ + struct au_dinfo *dinfo; + struct au_hdentry *hd; + struct au_branch *br; + + DiMustWriteLock(dentry); + + dinfo = au_di(dentry); + hd = au_hdentry(dinfo, bindex); + au_hdput(hd); + hd->hd_dentry = h_dentry; + if (h_dentry) { + br = au_sbr(dentry->d_sb, bindex); + hd->hd_id = br->br_id; + } +} + +int au_dbrange_test(struct dentry *dentry) +{ + int err; + aufs_bindex_t btop, bbot; + + err = 0; + btop = au_dbtop(dentry); + bbot = au_dbbot(dentry); + if (btop >= 0) + AuDebugOn(bbot < 0 && btop > bbot); + else { + err = -EIO; + AuDebugOn(bbot >= 0); + } + + return err; +} + +int au_digen_test(struct dentry *dentry, unsigned int sigen) +{ + int err; + + err = 0; + if (unlikely(au_digen(dentry) != sigen + || au_iigen_test(d_inode(dentry), sigen))) + err = -EIO; + + return err; +} + +void au_update_digen(struct dentry *dentry) +{ + atomic_set(&au_di(dentry)->di_generation, au_sigen(dentry->d_sb)); + /* smp_mb(); */ /* atomic_set */ +} + +void au_update_dbrange(struct dentry *dentry, int do_put_zero) +{ + struct au_dinfo *dinfo; + struct dentry *h_d; + struct au_hdentry *hdp; + aufs_bindex_t bindex, bbot; + + DiMustWriteLock(dentry); + + dinfo = au_di(dentry); + if (!dinfo || dinfo->di_btop < 0) + return; + + if (do_put_zero) { + bbot = dinfo->di_bbot; + bindex = dinfo->di_btop; + hdp = au_hdentry(dinfo, bindex); + for (; bindex <= bbot; bindex++, hdp++) { + h_d = hdp->hd_dentry; + if (h_d && d_is_negative(h_d)) + au_set_h_dptr(dentry, bindex, NULL); + } + } + + dinfo->di_btop = 0; + hdp = au_hdentry(dinfo, dinfo->di_btop); + for (; dinfo->di_btop <= dinfo->di_bbot; dinfo->di_btop++, hdp++) + if (hdp->hd_dentry) + break; + if (dinfo->di_btop > dinfo->di_bbot) { + dinfo->di_btop = -1; + dinfo->di_bbot = -1; + return; + } + + hdp = au_hdentry(dinfo, dinfo->di_bbot); + for (; dinfo->di_bbot >= 0; dinfo->di_bbot--, hdp--) + if (hdp->hd_dentry) + break; + AuDebugOn(dinfo->di_btop > dinfo->di_bbot || dinfo->di_bbot < 0); +} + +void au_update_dbtop(struct dentry *dentry) +{ + aufs_bindex_t bindex, bbot; + struct dentry *h_dentry; + + bbot = au_dbbot(dentry); + for (bindex = au_dbtop(dentry); bindex <= bbot; bindex++) { + h_dentry = au_h_dptr(dentry, bindex); + if (!h_dentry) + continue; + if (d_is_positive(h_dentry)) { + au_set_dbtop(dentry, bindex); + return; + } + au_set_h_dptr(dentry, bindex, NULL); + } +} + +void au_update_dbbot(struct dentry *dentry) +{ + aufs_bindex_t bindex, btop; + struct dentry *h_dentry; + + btop = au_dbtop(dentry); + for (bindex = au_dbbot(dentry); bindex >= btop; bindex--) { + h_dentry = au_h_dptr(dentry, bindex); + if (!h_dentry) + continue; + if (d_is_positive(h_dentry)) { + au_set_dbbot(dentry, bindex); + return; + } + au_set_h_dptr(dentry, bindex, NULL); + } +} + +int au_find_dbindex(struct dentry *dentry, struct dentry *h_dentry) +{ + aufs_bindex_t bindex, bbot; + + bbot = au_dbbot(dentry); + for (bindex = au_dbtop(dentry); bindex <= bbot; bindex++) + if (au_h_dptr(dentry, bindex) == h_dentry) + return bindex; + return -1; +} diff --git a/fs/aufs/dir.c b/fs/aufs/dir.c new file mode 100644 index 00000000000..7f386bf41d0 --- /dev/null +++ b/fs/aufs/dir.c @@ -0,0 +1,760 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * directory operations + */ + +#include +#include "aufs.h" + +void au_add_nlink(struct inode *dir, struct inode *h_dir) +{ + unsigned int nlink; + + AuDebugOn(!S_ISDIR(dir->i_mode) || !S_ISDIR(h_dir->i_mode)); + + nlink = dir->i_nlink; + nlink += h_dir->i_nlink - 2; + if (h_dir->i_nlink < 2) + nlink += 2; + smp_mb(); /* for i_nlink */ + /* 0 can happen in revaliding */ + set_nlink(dir, nlink); +} + +void au_sub_nlink(struct inode *dir, struct inode *h_dir) +{ + unsigned int nlink; + + AuDebugOn(!S_ISDIR(dir->i_mode) || !S_ISDIR(h_dir->i_mode)); + + nlink = dir->i_nlink; + nlink -= h_dir->i_nlink - 2; + if (h_dir->i_nlink < 2) + nlink -= 2; + smp_mb(); /* for i_nlink */ + /* nlink == 0 means the branch-fs is broken */ + set_nlink(dir, nlink); +} + +loff_t au_dir_size(struct file *file, struct dentry *dentry) +{ + loff_t sz; + aufs_bindex_t bindex, bbot; + struct file *h_file; + struct dentry *h_dentry; + + sz = 0; + if (file) { + AuDebugOn(!d_is_dir(file->f_path.dentry)); + + bbot = au_fbbot_dir(file); + for (bindex = au_fbtop(file); + bindex <= bbot && sz < KMALLOC_MAX_SIZE; + bindex++) { + h_file = au_hf_dir(file, bindex); + if (h_file && file_inode(h_file)) + sz += vfsub_f_size_read(h_file); + } + } else { + AuDebugOn(!dentry); + AuDebugOn(!d_is_dir(dentry)); + + bbot = au_dbtaildir(dentry); + for (bindex = au_dbtop(dentry); + bindex <= bbot && sz < KMALLOC_MAX_SIZE; + bindex++) { + h_dentry = au_h_dptr(dentry, bindex); + if (h_dentry && d_is_positive(h_dentry)) + sz += i_size_read(d_inode(h_dentry)); + } + } + if (sz < KMALLOC_MAX_SIZE) + sz = roundup_pow_of_two(sz); + if (sz > KMALLOC_MAX_SIZE) + sz = KMALLOC_MAX_SIZE; + else if (sz < NAME_MAX) { + BUILD_BUG_ON(AUFS_RDBLK_DEF < NAME_MAX); + sz = AUFS_RDBLK_DEF; + } + return sz; +} + +struct au_dir_ts_arg { + struct dentry *dentry; + aufs_bindex_t brid; +}; + +static void au_do_dir_ts(void *arg) +{ + struct au_dir_ts_arg *a = arg; + struct au_dtime dt; + struct path h_path; + struct inode *dir, *h_dir; + struct super_block *sb; + struct au_branch *br; + struct au_hinode *hdir; + int err; + aufs_bindex_t btop, bindex; + + sb = a->dentry->d_sb; + if (d_really_is_negative(a->dentry)) + goto out; + /* no dir->i_mutex lock */ + aufs_read_lock(a->dentry, AuLock_DW); /* noflush */ + + dir = d_inode(a->dentry); + btop = au_ibtop(dir); + bindex = au_br_index(sb, a->brid); + if (bindex < btop) + goto out_unlock; + + br = au_sbr(sb, bindex); + h_path.dentry = au_h_dptr(a->dentry, bindex); + if (!h_path.dentry) + goto out_unlock; + h_path.mnt = au_br_mnt(br); + au_dtime_store(&dt, a->dentry, &h_path); + + br = au_sbr(sb, btop); + if (!au_br_writable(br->br_perm)) + goto out_unlock; + h_path.dentry = au_h_dptr(a->dentry, btop); + h_path.mnt = au_br_mnt(br); + err = vfsub_mnt_want_write(h_path.mnt); + if (err) + goto out_unlock; + hdir = au_hi(dir, btop); + au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT); + h_dir = au_h_iptr(dir, btop); + if (h_dir->i_nlink + && timespec64_compare(&h_dir->i_mtime, &dt.dt_mtime) < 0) { + dt.dt_h_path = h_path; + au_dtime_revert(&dt); + } + au_hn_inode_unlock(hdir); + vfsub_mnt_drop_write(h_path.mnt); + au_cpup_attr_timesizes(dir); + +out_unlock: + aufs_read_unlock(a->dentry, AuLock_DW); +out: + dput(a->dentry); + au_nwt_done(&au_sbi(sb)->si_nowait); + kfree(arg); +} + +void au_dir_ts(struct inode *dir, aufs_bindex_t bindex) +{ + int perm, wkq_err; + aufs_bindex_t btop; + struct au_dir_ts_arg *arg; + struct dentry *dentry; + struct super_block *sb; + + IMustLock(dir); + + dentry = d_find_any_alias(dir); + AuDebugOn(!dentry); + sb = dentry->d_sb; + btop = au_ibtop(dir); + if (btop == bindex) { + au_cpup_attr_timesizes(dir); + goto out; + } + + perm = au_sbr_perm(sb, btop); + if (!au_br_writable(perm)) + goto out; + + arg = kmalloc(sizeof(*arg), GFP_NOFS); + if (!arg) + goto out; + + arg->dentry = dget(dentry); /* will be dput-ted by au_do_dir_ts() */ + arg->brid = au_sbr_id(sb, bindex); + wkq_err = au_wkq_nowait(au_do_dir_ts, arg, sb, /*flags*/0); + if (unlikely(wkq_err)) { + pr_err("wkq %d\n", wkq_err); + dput(dentry); + kfree(arg); + } + +out: + dput(dentry); +} + +/* ---------------------------------------------------------------------- */ + +static int reopen_dir(struct file *file) +{ + int err; + unsigned int flags; + aufs_bindex_t bindex, btail, btop; + struct dentry *dentry, *h_dentry; + struct file *h_file; + + /* open all lower dirs */ + dentry = file->f_path.dentry; + btop = au_dbtop(dentry); + for (bindex = au_fbtop(file); bindex < btop; bindex++) + au_set_h_fptr(file, bindex, NULL); + au_set_fbtop(file, btop); + + btail = au_dbtaildir(dentry); + for (bindex = au_fbbot_dir(file); btail < bindex; bindex--) + au_set_h_fptr(file, bindex, NULL); + au_set_fbbot_dir(file, btail); + + flags = vfsub_file_flags(file); + for (bindex = btop; bindex <= btail; bindex++) { + h_dentry = au_h_dptr(dentry, bindex); + if (!h_dentry) + continue; + h_file = au_hf_dir(file, bindex); + if (h_file) + continue; + + h_file = au_h_open(dentry, bindex, flags, file, /*force_wr*/0); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; /* close all? */ + au_set_h_fptr(file, bindex, h_file); + } + au_update_figen(file); + /* todo: necessary? */ + /* file->f_ra = h_file->f_ra; */ + err = 0; + +out: + return err; +} + +static int do_open_dir(struct file *file, int flags, struct file *h_file) +{ + int err; + aufs_bindex_t bindex, btail; + struct dentry *dentry, *h_dentry; + struct vfsmount *mnt; + + FiMustWriteLock(file); + AuDebugOn(h_file); + + err = 0; + mnt = file->f_path.mnt; + dentry = file->f_path.dentry; + file->f_version = inode_query_iversion(d_inode(dentry)); + bindex = au_dbtop(dentry); + au_set_fbtop(file, bindex); + btail = au_dbtaildir(dentry); + au_set_fbbot_dir(file, btail); + for (; !err && bindex <= btail; bindex++) { + h_dentry = au_h_dptr(dentry, bindex); + if (!h_dentry) + continue; + + err = vfsub_test_mntns(mnt, h_dentry->d_sb); + if (unlikely(err)) + break; + h_file = au_h_open(dentry, bindex, flags, file, /*force_wr*/0); + if (IS_ERR(h_file)) { + err = PTR_ERR(h_file); + break; + } + au_set_h_fptr(file, bindex, h_file); + } + au_update_figen(file); + /* todo: necessary? */ + /* file->f_ra = h_file->f_ra; */ + if (!err) + return 0; /* success */ + + /* close all */ + for (bindex = au_fbtop(file); bindex <= btail; bindex++) + au_set_h_fptr(file, bindex, NULL); + au_set_fbtop(file, -1); + au_set_fbbot_dir(file, -1); + + return err; +} + +static int aufs_open_dir(struct inode *inode __maybe_unused, + struct file *file) +{ + int err; + struct super_block *sb; + struct au_fidir *fidir; + + err = -ENOMEM; + sb = file->f_path.dentry->d_sb; + si_read_lock(sb, AuLock_FLUSH); + fidir = au_fidir_alloc(sb); + if (fidir) { + struct au_do_open_args args = { + .open = do_open_dir, + .fidir = fidir + }; + err = au_do_open(file, &args); + if (unlikely(err)) + kfree(fidir); + } + si_read_unlock(sb); + return err; +} + +static int aufs_release_dir(struct inode *inode __maybe_unused, + struct file *file) +{ + struct au_vdir *vdir_cache; + struct au_finfo *finfo; + struct au_fidir *fidir; + struct au_hfile *hf; + aufs_bindex_t bindex, bbot; + + finfo = au_fi(file); + fidir = finfo->fi_hdir; + if (fidir) { + au_hbl_del(&finfo->fi_hlist, + &au_sbi(file->f_path.dentry->d_sb)->si_files); + vdir_cache = fidir->fd_vdir_cache; /* lock-free */ + if (vdir_cache) + au_vdir_free(vdir_cache); + + bindex = finfo->fi_btop; + if (bindex >= 0) { + hf = fidir->fd_hfile + bindex; + /* + * calls fput() instead of filp_close(), + * since no dnotify or lock for the lower file. + */ + bbot = fidir->fd_bbot; + for (; bindex <= bbot; bindex++, hf++) + if (hf->hf_file) + au_hfput(hf, /*execed*/0); + } + kfree(fidir); + finfo->fi_hdir = NULL; + } + au_finfo_fin(file); + return 0; +} + +/* ---------------------------------------------------------------------- */ + +static int au_do_flush_dir(struct file *file, fl_owner_t id) +{ + int err; + aufs_bindex_t bindex, bbot; + struct file *h_file; + + err = 0; + bbot = au_fbbot_dir(file); + for (bindex = au_fbtop(file); !err && bindex <= bbot; bindex++) { + h_file = au_hf_dir(file, bindex); + if (h_file) + err = vfsub_flush(h_file, id); + } + return err; +} + +static int aufs_flush_dir(struct file *file, fl_owner_t id) +{ + return au_do_flush(file, id, au_do_flush_dir); +} + +/* ---------------------------------------------------------------------- */ + +static int au_do_fsync_dir_no_file(struct dentry *dentry, int datasync) +{ + int err; + aufs_bindex_t bbot, bindex; + struct inode *inode; + struct super_block *sb; + + err = 0; + sb = dentry->d_sb; + inode = d_inode(dentry); + IMustLock(inode); + bbot = au_dbbot(dentry); + for (bindex = au_dbtop(dentry); !err && bindex <= bbot; bindex++) { + struct path h_path; + + if (au_test_ro(sb, bindex, inode)) + continue; + h_path.dentry = au_h_dptr(dentry, bindex); + if (!h_path.dentry) + continue; + + h_path.mnt = au_sbr_mnt(sb, bindex); + err = vfsub_fsync(NULL, &h_path, datasync); + } + + return err; +} + +static int au_do_fsync_dir(struct file *file, int datasync) +{ + int err; + aufs_bindex_t bbot, bindex; + struct file *h_file; + struct super_block *sb; + struct inode *inode; + + err = au_reval_and_lock_fdi(file, reopen_dir, /*wlock*/1, /*fi_lsc*/0); + if (unlikely(err)) + goto out; + + inode = file_inode(file); + sb = inode->i_sb; + bbot = au_fbbot_dir(file); + for (bindex = au_fbtop(file); !err && bindex <= bbot; bindex++) { + h_file = au_hf_dir(file, bindex); + if (!h_file || au_test_ro(sb, bindex, inode)) + continue; + + err = vfsub_fsync(h_file, &h_file->f_path, datasync); + } + +out: + return err; +} + +/* + * @file may be NULL + */ +static int aufs_fsync_dir(struct file *file, loff_t start, loff_t end, + int datasync) +{ + int err; + struct dentry *dentry; + struct inode *inode; + struct super_block *sb; + + err = 0; + dentry = file->f_path.dentry; + inode = d_inode(dentry); + inode_lock(inode); + sb = dentry->d_sb; + si_noflush_read_lock(sb); + if (file) + err = au_do_fsync_dir(file, datasync); + else { + di_write_lock_child(dentry); + err = au_do_fsync_dir_no_file(dentry, datasync); + } + au_cpup_attr_timesizes(inode); + di_write_unlock(dentry); + if (file) + fi_write_unlock(file); + + si_read_unlock(sb); + inode_unlock(inode); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int aufs_iterate_shared(struct file *file, struct dir_context *ctx) +{ + int err; + struct dentry *dentry; + struct inode *inode, *h_inode; + struct super_block *sb; + + AuDbg("%pD, ctx{%ps, %llu}\n", file, ctx->actor, ctx->pos); + + dentry = file->f_path.dentry; + inode = d_inode(dentry); + IMustLock(inode); + + sb = dentry->d_sb; + si_read_lock(sb, AuLock_FLUSH); + err = au_reval_and_lock_fdi(file, reopen_dir, /*wlock*/1, /*fi_lsc*/0); + if (unlikely(err)) + goto out; + err = au_alive_dir(dentry); + if (!err) + err = au_vdir_init(file); + di_downgrade_lock(dentry, AuLock_IR); + if (unlikely(err)) + goto out_unlock; + + h_inode = au_h_iptr(inode, au_ibtop(inode)); + if (!au_test_nfsd()) { + err = au_vdir_fill_de(file, ctx); + fsstack_copy_attr_atime(inode, h_inode); + } else { + /* + * nfsd filldir may call lookup_one_len(), vfs_getattr(), + * encode_fh() and others. + */ + atomic_inc(&h_inode->i_count); + di_read_unlock(dentry, AuLock_IR); + si_read_unlock(sb); + err = au_vdir_fill_de(file, ctx); + fsstack_copy_attr_atime(inode, h_inode); + fi_write_unlock(file); + iput(h_inode); + + AuTraceErr(err); + return err; + } + +out_unlock: + di_read_unlock(dentry, AuLock_IR); + fi_write_unlock(file); +out: + si_read_unlock(sb); + return err; +} + +/* ---------------------------------------------------------------------- */ + +#define AuTestEmpty_WHONLY 1 +#define AuTestEmpty_CALLED (1 << 1) +#define AuTestEmpty_SHWH (1 << 2) +#define au_ftest_testempty(flags, name) ((flags) & AuTestEmpty_##name) +#define au_fset_testempty(flags, name) \ + do { (flags) |= AuTestEmpty_##name; } while (0) +#define au_fclr_testempty(flags, name) \ + do { (flags) &= ~AuTestEmpty_##name; } while (0) + +#ifndef CONFIG_AUFS_SHWH +#undef AuTestEmpty_SHWH +#define AuTestEmpty_SHWH 0 +#endif + +struct test_empty_arg { + struct dir_context ctx; + struct au_nhash *whlist; + unsigned int flags; + int err; + aufs_bindex_t bindex; +}; + +static int test_empty_cb(struct dir_context *ctx, const char *__name, + int namelen, loff_t offset __maybe_unused, u64 ino, + unsigned int d_type) +{ + struct test_empty_arg *arg = container_of(ctx, struct test_empty_arg, + ctx); + char *name = (void *)__name; + + arg->err = 0; + au_fset_testempty(arg->flags, CALLED); + /* smp_mb(); */ + if (name[0] == '.' + && (namelen == 1 || (name[1] == '.' && namelen == 2))) + goto out; /* success */ + + if (namelen <= AUFS_WH_PFX_LEN + || memcmp(name, AUFS_WH_PFX, AUFS_WH_PFX_LEN)) { + if (au_ftest_testempty(arg->flags, WHONLY) + && !au_nhash_test_known_wh(arg->whlist, name, namelen)) + arg->err = -ENOTEMPTY; + goto out; + } + + name += AUFS_WH_PFX_LEN; + namelen -= AUFS_WH_PFX_LEN; + if (!au_nhash_test_known_wh(arg->whlist, name, namelen)) + arg->err = au_nhash_append_wh + (arg->whlist, name, namelen, ino, d_type, arg->bindex, + au_ftest_testempty(arg->flags, SHWH)); + +out: + /* smp_mb(); */ + AuTraceErr(arg->err); + return arg->err; +} + +static int do_test_empty(struct dentry *dentry, struct test_empty_arg *arg) +{ + int err; + struct file *h_file; + + h_file = au_h_open(dentry, arg->bindex, + O_RDONLY | O_NONBLOCK | O_DIRECTORY | O_LARGEFILE, + /*file*/NULL, /*force_wr*/0); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + err = 0; + if (!au_opt_test(au_mntflags(dentry->d_sb), UDBA_NONE) + && !file_inode(h_file)->i_nlink) + goto out_put; + + do { + arg->err = 0; + au_fclr_testempty(arg->flags, CALLED); + /* smp_mb(); */ + err = vfsub_iterate_dir(h_file, &arg->ctx); + if (err >= 0) + err = arg->err; + } while (!err && au_ftest_testempty(arg->flags, CALLED)); + +out_put: + fput(h_file); + au_sbr_put(dentry->d_sb, arg->bindex); +out: + return err; +} + +struct do_test_empty_args { + int *errp; + struct dentry *dentry; + struct test_empty_arg *arg; +}; + +static void call_do_test_empty(void *args) +{ + struct do_test_empty_args *a = args; + *a->errp = do_test_empty(a->dentry, a->arg); +} + +static int sio_test_empty(struct dentry *dentry, struct test_empty_arg *arg) +{ + int err, wkq_err; + struct dentry *h_dentry; + struct inode *h_inode; + + h_dentry = au_h_dptr(dentry, arg->bindex); + h_inode = d_inode(h_dentry); + /* todo: i_mode changes anytime? */ + inode_lock_shared_nested(h_inode, AuLsc_I_CHILD); + err = au_test_h_perm_sio(h_inode, MAY_EXEC | MAY_READ); + inode_unlock_shared(h_inode); + if (!err) + err = do_test_empty(dentry, arg); + else { + struct do_test_empty_args args = { + .errp = &err, + .dentry = dentry, + .arg = arg + }; + unsigned int flags = arg->flags; + + wkq_err = au_wkq_wait(call_do_test_empty, &args); + if (unlikely(wkq_err)) + err = wkq_err; + arg->flags = flags; + } + + return err; +} + +int au_test_empty_lower(struct dentry *dentry) +{ + int err; + unsigned int rdhash; + aufs_bindex_t bindex, btop, btail; + struct au_nhash whlist; + struct test_empty_arg arg = { + .ctx = { + .actor = test_empty_cb + } + }; + int (*test_empty)(struct dentry *dentry, struct test_empty_arg *arg); + + SiMustAnyLock(dentry->d_sb); + + rdhash = au_sbi(dentry->d_sb)->si_rdhash; + if (!rdhash) + rdhash = au_rdhash_est(au_dir_size(/*file*/NULL, dentry)); + err = au_nhash_alloc(&whlist, rdhash, GFP_NOFS); + if (unlikely(err)) + goto out; + + arg.flags = 0; + arg.whlist = &whlist; + btop = au_dbtop(dentry); + if (au_opt_test(au_mntflags(dentry->d_sb), SHWH)) + au_fset_testempty(arg.flags, SHWH); + test_empty = do_test_empty; + if (au_opt_test(au_mntflags(dentry->d_sb), DIRPERM1)) + test_empty = sio_test_empty; + arg.bindex = btop; + err = test_empty(dentry, &arg); + if (unlikely(err)) + goto out_whlist; + + au_fset_testempty(arg.flags, WHONLY); + btail = au_dbtaildir(dentry); + for (bindex = btop + 1; !err && bindex <= btail; bindex++) { + struct dentry *h_dentry; + + h_dentry = au_h_dptr(dentry, bindex); + if (h_dentry && d_is_positive(h_dentry)) { + arg.bindex = bindex; + err = test_empty(dentry, &arg); + } + } + +out_whlist: + au_nhash_wh_free(&whlist); +out: + return err; +} + +int au_test_empty(struct dentry *dentry, struct au_nhash *whlist) +{ + int err; + struct test_empty_arg arg = { + .ctx = { + .actor = test_empty_cb + } + }; + aufs_bindex_t bindex, btail; + + err = 0; + arg.whlist = whlist; + arg.flags = AuTestEmpty_WHONLY; + if (au_opt_test(au_mntflags(dentry->d_sb), SHWH)) + au_fset_testempty(arg.flags, SHWH); + btail = au_dbtaildir(dentry); + for (bindex = au_dbtop(dentry); !err && bindex <= btail; bindex++) { + struct dentry *h_dentry; + + h_dentry = au_h_dptr(dentry, bindex); + if (h_dentry && d_is_positive(h_dentry)) { + arg.bindex = bindex; + err = sio_test_empty(dentry, &arg); + } + } + + return err; +} + +/* ---------------------------------------------------------------------- */ + +const struct file_operations aufs_dir_fop = { + .owner = THIS_MODULE, + .llseek = default_llseek, + .read = generic_read_dir, + .iterate_shared = aufs_iterate_shared, + .unlocked_ioctl = aufs_ioctl_dir, +#ifdef CONFIG_COMPAT + .compat_ioctl = aufs_compat_ioctl_dir, +#endif + .open = aufs_open_dir, + .release = aufs_release_dir, + .flush = aufs_flush_dir, + .fsync = aufs_fsync_dir +}; diff --git a/fs/aufs/dir.h b/fs/aufs/dir.h new file mode 100644 index 00000000000..e7acabe09b5 --- /dev/null +++ b/fs/aufs/dir.h @@ -0,0 +1,132 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * directory operations + */ + +#ifndef __AUFS_DIR_H__ +#define __AUFS_DIR_H__ + +#ifdef __KERNEL__ + +#include + +/* ---------------------------------------------------------------------- */ + +/* need to be faster and smaller */ + +struct au_nhash { + unsigned int nh_num; + struct hlist_head *nh_head; +}; + +struct au_vdir_destr { + unsigned char len; + unsigned char name[0]; +} __packed; + +struct au_vdir_dehstr { + struct hlist_node hash; + struct au_vdir_destr *str; +} ____cacheline_aligned_in_smp; + +struct au_vdir_de { + ino_t de_ino; + unsigned char de_type; + /* caution: packed */ + struct au_vdir_destr de_str; +} __packed; + +struct au_vdir_wh { + struct hlist_node wh_hash; +#ifdef CONFIG_AUFS_SHWH + ino_t wh_ino; + aufs_bindex_t wh_bindex; + unsigned char wh_type; +#else + aufs_bindex_t wh_bindex; +#endif + /* caution: packed */ + struct au_vdir_destr wh_str; +} __packed; + +union au_vdir_deblk_p { + unsigned char *deblk; + struct au_vdir_de *de; +}; + +struct au_vdir { + unsigned char **vd_deblk; + unsigned long vd_nblk; + struct { + unsigned long ul; + union au_vdir_deblk_p p; + } vd_last; + + u64 vd_version; + unsigned int vd_deblk_sz; + unsigned long vd_jiffy; +} ____cacheline_aligned_in_smp; + +/* ---------------------------------------------------------------------- */ + +/* dir.c */ +extern const struct file_operations aufs_dir_fop; +void au_add_nlink(struct inode *dir, struct inode *h_dir); +void au_sub_nlink(struct inode *dir, struct inode *h_dir); +loff_t au_dir_size(struct file *file, struct dentry *dentry); +void au_dir_ts(struct inode *dir, aufs_bindex_t bsrc); +int au_test_empty_lower(struct dentry *dentry); +int au_test_empty(struct dentry *dentry, struct au_nhash *whlist); + +/* vdir.c */ +unsigned int au_rdhash_est(loff_t sz); +int au_nhash_alloc(struct au_nhash *nhash, unsigned int num_hash, gfp_t gfp); +void au_nhash_wh_free(struct au_nhash *whlist); +int au_nhash_test_longer_wh(struct au_nhash *whlist, aufs_bindex_t btgt, + int limit); +int au_nhash_test_known_wh(struct au_nhash *whlist, char *name, int nlen); +int au_nhash_append_wh(struct au_nhash *whlist, char *name, int nlen, ino_t ino, + unsigned int d_type, aufs_bindex_t bindex, + unsigned char shwh); +void au_vdir_free(struct au_vdir *vdir); +int au_vdir_init(struct file *file); +int au_vdir_fill_de(struct file *file, struct dir_context *ctx); + +/* ioctl.c */ +long aufs_ioctl_dir(struct file *file, unsigned int cmd, unsigned long arg); + +#ifdef CONFIG_AUFS_RDU +/* rdu.c */ +long au_rdu_ioctl(struct file *file, unsigned int cmd, unsigned long arg); +#ifdef CONFIG_COMPAT +long au_rdu_compat_ioctl(struct file *file, unsigned int cmd, + unsigned long arg); +#endif +#else +AuStub(long, au_rdu_ioctl, return -EINVAL, struct file *file, + unsigned int cmd, unsigned long arg) +#ifdef CONFIG_COMPAT +AuStub(long, au_rdu_compat_ioctl, return -EINVAL, struct file *file, + unsigned int cmd, unsigned long arg) +#endif +#endif + +#endif /* __KERNEL__ */ +#endif /* __AUFS_DIR_H__ */ diff --git a/fs/aufs/dirren.c b/fs/aufs/dirren.c new file mode 100644 index 00000000000..63a4024ba42 --- /dev/null +++ b/fs/aufs/dirren.c @@ -0,0 +1,1316 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2017-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * special handling in renaming a directoy + * in order to support looking-up the before-renamed name on the lower readonly + * branches + */ + +#include +#include "aufs.h" + +static void au_dr_hino_del(struct au_dr_br *dr, struct au_dr_hino *ent) +{ + int idx; + + idx = au_dr_ihash(ent->dr_h_ino); + au_hbl_del(&ent->dr_hnode, dr->dr_h_ino + idx); +} + +static int au_dr_hino_test_empty(struct au_dr_br *dr) +{ + int ret, i; + struct hlist_bl_head *hbl; + + ret = 1; + for (i = 0; ret && i < AuDirren_NHASH; i++) { + hbl = dr->dr_h_ino + i; + hlist_bl_lock(hbl); + ret &= hlist_bl_empty(hbl); + hlist_bl_unlock(hbl); + } + + return ret; +} + +static struct au_dr_hino *au_dr_hino_find(struct au_dr_br *dr, ino_t ino) +{ + struct au_dr_hino *found, *ent; + struct hlist_bl_head *hbl; + struct hlist_bl_node *pos; + int idx; + + found = NULL; + idx = au_dr_ihash(ino); + hbl = dr->dr_h_ino + idx; + hlist_bl_lock(hbl); + hlist_bl_for_each_entry(ent, pos, hbl, dr_hnode) + if (ent->dr_h_ino == ino) { + found = ent; + break; + } + hlist_bl_unlock(hbl); + + return found; +} + +int au_dr_hino_test_add(struct au_dr_br *dr, ino_t ino, + struct au_dr_hino *add_ent) +{ + int found, idx; + struct hlist_bl_head *hbl; + struct hlist_bl_node *pos; + struct au_dr_hino *ent; + + found = 0; + idx = au_dr_ihash(ino); + hbl = dr->dr_h_ino + idx; +#if 0 + { + struct hlist_bl_node *tmp; + + hlist_bl_for_each_entry_safe(ent, pos, tmp, hbl, dr_hnode) + AuDbg("hi%llu\n", (unsigned long long)ent->dr_h_ino); + } +#endif + hlist_bl_lock(hbl); + hlist_bl_for_each_entry(ent, pos, hbl, dr_hnode) + if (ent->dr_h_ino == ino) { + found = 1; + break; + } + if (!found && add_ent) + hlist_bl_add_head(&add_ent->dr_hnode, hbl); + hlist_bl_unlock(hbl); + + if (!found && add_ent) + AuDbg("i%llu added\n", (unsigned long long)add_ent->dr_h_ino); + + return found; +} + +void au_dr_hino_free(struct au_dr_br *dr) +{ + int i; + struct hlist_bl_head *hbl; + struct hlist_bl_node *pos, *tmp; + struct au_dr_hino *ent; + + /* SiMustWriteLock(sb); */ + + for (i = 0; i < AuDirren_NHASH; i++) { + hbl = dr->dr_h_ino + i; + /* no spinlock since sbinfo must be write-locked */ + hlist_bl_for_each_entry_safe(ent, pos, tmp, hbl, dr_hnode) + kfree(ent); + INIT_HLIST_BL_HEAD(hbl); + } +} + +/* returns the number of inodes or an error */ +static int au_dr_hino_store(struct super_block *sb, struct au_branch *br, + struct file *hinofile) +{ + int err, i; + ssize_t ssz; + loff_t pos, oldsize; + __be64 u64; + struct inode *hinoinode; + struct hlist_bl_head *hbl; + struct hlist_bl_node *n1, *n2; + struct au_dr_hino *ent; + + SiMustWriteLock(sb); + AuDebugOn(!au_br_writable(br->br_perm)); + + hinoinode = file_inode(hinofile); + oldsize = i_size_read(hinoinode); + + err = 0; + pos = 0; + hbl = br->br_dirren.dr_h_ino; + for (i = 0; !err && i < AuDirren_NHASH; i++, hbl++) { + /* no bit-lock since sbinfo must be write-locked */ + hlist_bl_for_each_entry_safe(ent, n1, n2, hbl, dr_hnode) { + AuDbg("hi%llu, %pD2\n", + (unsigned long long)ent->dr_h_ino, hinofile); + u64 = cpu_to_be64(ent->dr_h_ino); + ssz = vfsub_write_k(hinofile, &u64, sizeof(u64), &pos); + if (ssz == sizeof(u64)) + continue; + + /* write error */ + pr_err("ssz %zd, %pD2\n", ssz, hinofile); + err = -ENOSPC; + if (ssz < 0) + err = ssz; + break; + } + } + /* regardless the error */ + if (pos < oldsize) { + err = vfsub_trunc(&hinofile->f_path, pos, /*attr*/0, hinofile); + AuTraceErr(err); + } + + AuTraceErr(err); + return err; +} + +static int au_dr_hino_load(struct au_dr_br *dr, struct file *hinofile) +{ + int err, hidx; + ssize_t ssz; + size_t sz, n; + loff_t pos; + uint64_t u64; + struct au_dr_hino *ent; + struct inode *hinoinode; + struct hlist_bl_head *hbl; + + err = 0; + pos = 0; + hbl = dr->dr_h_ino; + hinoinode = file_inode(hinofile); + sz = i_size_read(hinoinode); + AuDebugOn(sz % sizeof(u64)); + n = sz / sizeof(u64); + while (n--) { + ssz = vfsub_read_k(hinofile, &u64, sizeof(u64), &pos); + if (unlikely(ssz != sizeof(u64))) { + pr_err("ssz %zd, %pD2\n", ssz, hinofile); + err = -EINVAL; + if (ssz < 0) + err = ssz; + goto out_free; + } + + ent = kmalloc(sizeof(*ent), GFP_NOFS); + if (!ent) { + err = -ENOMEM; + AuTraceErr(err); + goto out_free; + } + ent->dr_h_ino = be64_to_cpu((__force __be64)u64); + AuDbg("hi%llu, %pD2\n", + (unsigned long long)ent->dr_h_ino, hinofile); + hidx = au_dr_ihash(ent->dr_h_ino); + au_hbl_add(&ent->dr_hnode, hbl + hidx); + } + goto out; /* success */ + +out_free: + au_dr_hino_free(dr); +out: + AuTraceErr(err); + return err; +} + +/* + * @bindex/@br is a switch to distinguish whether suspending hnotify or not. + * @path is a switch to distinguish load and store. + */ +static int au_dr_hino(struct super_block *sb, aufs_bindex_t bindex, + struct au_branch *br, const struct path *path) +{ + int err, flags; + unsigned char load, suspend; + struct file *hinofile; + struct au_hinode *hdir; + struct inode *dir, *delegated; + struct path hinopath; + struct qstr hinoname = QSTR_INIT(AUFS_WH_DR_BRHINO, + sizeof(AUFS_WH_DR_BRHINO) - 1); + + AuDebugOn(bindex < 0 && !br); + AuDebugOn(bindex >= 0 && br); + + err = -EINVAL; + suspend = !br; + if (suspend) + br = au_sbr(sb, bindex); + load = !!path; + if (!load) { + path = &br->br_path; + AuDebugOn(!au_br_writable(br->br_perm)); + if (unlikely(!au_br_writable(br->br_perm))) + goto out; + } + + hdir = NULL; + if (suspend) { + dir = d_inode(sb->s_root); + hdir = au_hinode(au_ii(dir), bindex); + dir = hdir->hi_inode; + au_hn_inode_lock_nested(hdir, AuLsc_I_CHILD); + } else { + dir = d_inode(path->dentry); + inode_lock_nested(dir, AuLsc_I_CHILD); + } + hinopath.dentry = vfsub_lkup_one(&hinoname, path->dentry); + err = PTR_ERR(hinopath.dentry); + if (IS_ERR(hinopath.dentry)) + goto out_unlock; + + err = 0; + flags = O_RDONLY; + if (load) { + if (d_is_negative(hinopath.dentry)) + goto out_dput; /* success */ + } else { + if (au_dr_hino_test_empty(&br->br_dirren)) { + if (d_is_positive(hinopath.dentry)) { + delegated = NULL; + err = vfsub_unlink(dir, &hinopath, &delegated, + /*force*/0); + AuTraceErr(err); + if (unlikely(err)) + pr_err("ignored err %d, %pd2\n", + err, hinopath.dentry); + if (unlikely(err == -EWOULDBLOCK)) + iput(delegated); + err = 0; + } + goto out_dput; + } else if (!d_is_positive(hinopath.dentry)) { + err = vfsub_create(dir, &hinopath, 0600, + /*want_excl*/false); + AuTraceErr(err); + if (unlikely(err)) + goto out_dput; + } + flags = O_WRONLY; + } + hinopath.mnt = path->mnt; + hinofile = vfsub_dentry_open(&hinopath, flags); + if (suspend) + au_hn_inode_unlock(hdir); + else + inode_unlock(dir); + dput(hinopath.dentry); + AuTraceErrPtr(hinofile); + if (IS_ERR(hinofile)) { + err = PTR_ERR(hinofile); + goto out; + } + + if (load) + err = au_dr_hino_load(&br->br_dirren, hinofile); + else + err = au_dr_hino_store(sb, br, hinofile); + fput(hinofile); + goto out; + +out_dput: + dput(hinopath.dentry); +out_unlock: + if (suspend) + au_hn_inode_unlock(hdir); + else + inode_unlock(dir); +out: + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int au_dr_brid_init(struct au_dr_brid *brid, const struct path *path) +{ + int err; + struct kstatfs kstfs; + dev_t dev; + struct dentry *dentry; + struct super_block *sb; + + err = vfs_statfs((void *)path, &kstfs); + AuTraceErr(err); + if (unlikely(err)) + goto out; + + /* todo: support for UUID */ + + if (kstfs.f_fsid.val[0] || kstfs.f_fsid.val[1]) { + brid->type = AuBrid_FSID; + brid->fsid = kstfs.f_fsid; + } else { + dentry = path->dentry; + sb = dentry->d_sb; + dev = sb->s_dev; + if (dev) { + brid->type = AuBrid_DEV; + brid->dev = dev; + } + } + +out: + return err; +} + +int au_dr_br_init(struct super_block *sb, struct au_branch *br, + const struct path *path) +{ + int err, i; + struct au_dr_br *dr; + struct hlist_bl_head *hbl; + + dr = &br->br_dirren; + hbl = dr->dr_h_ino; + for (i = 0; i < AuDirren_NHASH; i++, hbl++) + INIT_HLIST_BL_HEAD(hbl); + + err = au_dr_brid_init(&dr->dr_brid, path); + if (unlikely(err)) + goto out; + + if (au_opt_test(au_mntflags(sb), DIRREN)) + err = au_dr_hino(sb, /*bindex*/-1, br, path); + +out: + AuTraceErr(err); + return err; +} + +int au_dr_br_fin(struct super_block *sb, struct au_branch *br) +{ + int err; + + err = 0; + if (au_br_writable(br->br_perm)) + err = au_dr_hino(sb, /*bindex*/-1, br, /*path*/NULL); + if (!err) + au_dr_hino_free(&br->br_dirren); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int au_brid_str(struct au_dr_brid *brid, struct inode *h_inode, + char *buf, size_t sz) +{ + int err; + unsigned int major, minor; + char *p; + + p = buf; + err = snprintf(p, sz, "%d_", brid->type); + AuDebugOn(err > sz); + p += err; + sz -= err; + switch (brid->type) { + case AuBrid_Unset: + return -EINVAL; + case AuBrid_UUID: + err = snprintf(p, sz, "%pU", brid->uuid.b); + break; + case AuBrid_FSID: + err = snprintf(p, sz, "%08x-%08x", + brid->fsid.val[0], brid->fsid.val[1]); + break; + case AuBrid_DEV: + major = MAJOR(brid->dev); + minor = MINOR(brid->dev); + if (major <= 0xff && minor <= 0xff) + err = snprintf(p, sz, "%02x%02x", major, minor); + else + err = snprintf(p, sz, "%03x:%05x", major, minor); + break; + } + AuDebugOn(err > sz); + p += err; + sz -= err; + err = snprintf(p, sz, "_%llu", (unsigned long long)h_inode->i_ino); + AuDebugOn(err > sz); + p += err; + sz -= err; + + return p - buf; +} + +static int au_drinfo_name(struct au_branch *br, char *name, int len) +{ + int rlen; + struct dentry *br_dentry; + struct inode *br_inode; + + br_dentry = au_br_dentry(br); + br_inode = d_inode(br_dentry); + rlen = au_brid_str(&br->br_dirren.dr_brid, br_inode, name, len); + AuDebugOn(rlen >= AUFS_DIRREN_ENV_VAL_SZ); + AuDebugOn(rlen > len); + + return rlen; +} + +/* ---------------------------------------------------------------------- */ + +/* + * from the given @h_dentry, construct drinfo at @*fdata. + * when the size of @*fdata is not enough, reallocate and return new @fdata and + * @allocated. + */ +static int au_drinfo_construct(struct au_drinfo_fdata **fdata, + struct dentry *h_dentry, + unsigned char *allocated) +{ + int err, v; + struct au_drinfo_fdata *f, *p; + struct au_drinfo *drinfo; + struct inode *h_inode; + struct qstr *qname; + + err = 0; + f = *fdata; + h_inode = d_inode(h_dentry); + qname = &h_dentry->d_name; + drinfo = &f->drinfo; + drinfo->ino = (__force uint64_t)cpu_to_be64(h_inode->i_ino); + drinfo->oldnamelen = qname->len; + if (*allocated < sizeof(*f) + qname->len) { + v = roundup_pow_of_two(*allocated + qname->len); + p = au_krealloc(f, v, GFP_NOFS, /*may_shrink*/0); + if (unlikely(!p)) { + err = -ENOMEM; + AuTraceErr(err); + goto out; + } + f = p; + *fdata = f; + *allocated = v; + drinfo = &f->drinfo; + } + memcpy(drinfo->oldname, qname->name, qname->len); + AuDbg("i%llu, %.*s\n", + be64_to_cpu((__force __be64)drinfo->ino), drinfo->oldnamelen, + drinfo->oldname); + +out: + AuTraceErr(err); + return err; +} + +/* callers have to free the return value */ +static struct au_drinfo *au_drinfo_read_k(struct file *file, ino_t h_ino) +{ + struct au_drinfo *ret, *drinfo; + struct au_drinfo_fdata fdata; + int len; + loff_t pos; + ssize_t ssz; + + ret = ERR_PTR(-EIO); + pos = 0; + ssz = vfsub_read_k(file, &fdata, sizeof(fdata), &pos); + if (unlikely(ssz != sizeof(fdata))) { + AuIOErr("ssz %zd, %u, %pD2\n", + ssz, (unsigned int)sizeof(fdata), file); + goto out; + } + + fdata.magic = ntohl((__force __be32)fdata.magic); + switch (fdata.magic) { + case AUFS_DRINFO_MAGIC_V1: + break; + default: + AuIOErr("magic-num 0x%x, 0x%x, %pD2\n", + fdata.magic, AUFS_DRINFO_MAGIC_V1, file); + goto out; + } + + drinfo = &fdata.drinfo; + len = drinfo->oldnamelen; + if (!len) { + AuIOErr("broken drinfo %pD2\n", file); + goto out; + } + + ret = NULL; + drinfo->ino = be64_to_cpu((__force __be64)drinfo->ino); + if (unlikely(h_ino && drinfo->ino != h_ino)) { + AuDbg("ignored i%llu, i%llu, %pD2\n", + (unsigned long long)drinfo->ino, + (unsigned long long)h_ino, file); + goto out; /* success */ + } + + ret = kmalloc(sizeof(*ret) + len, GFP_NOFS); + if (unlikely(!ret)) { + ret = ERR_PTR(-ENOMEM); + AuTraceErrPtr(ret); + goto out; + } + + *ret = *drinfo; + ssz = vfsub_read_k(file, (void *)ret->oldname, len, &pos); + if (unlikely(ssz != len)) { + kfree(ret); + ret = ERR_PTR(-EIO); + AuIOErr("ssz %zd, %u, %pD2\n", ssz, len, file); + goto out; + } + + AuDbg("oldname %.*s\n", ret->oldnamelen, ret->oldname); + +out: + return ret; +} + +/* ---------------------------------------------------------------------- */ + +/* in order to be revertible */ +struct au_drinfo_rev_elm { + int created; + struct dentry *info_dentry; + struct au_drinfo *info_last; +}; + +struct au_drinfo_rev { + unsigned char already; + aufs_bindex_t nelm; + struct au_drinfo_rev_elm elm[0]; +}; + +/* todo: isn't it too large? */ +struct au_drinfo_store { + struct path h_ppath; + struct dentry *h_dentry; + struct au_drinfo_fdata *fdata; + char *infoname; /* inside of whname, just after PFX */ + char whname[sizeof(AUFS_WH_DR_INFO_PFX) + AUFS_DIRREN_ENV_VAL_SZ]; + aufs_bindex_t btgt, btail; + unsigned char no_sio, + allocated, /* current size of *fdata */ + infonamelen, /* room size for p */ + whnamelen, /* length of the genarated name */ + renameback; /* renamed back */ +}; + +/* on rename(2) error, the caller should revert it using @elm */ +static int au_drinfo_do_store(struct au_drinfo_store *w, + struct au_drinfo_rev_elm *elm) +{ + int err, len; + ssize_t ssz; + loff_t pos; + struct path infopath = { + .mnt = w->h_ppath.mnt + }; + struct inode *h_dir, *h_inode, *delegated; + struct file *infofile; + struct qstr *qname; + + AuDebugOn(elm + && memcmp(elm, page_address(ZERO_PAGE(0)), sizeof(*elm))); + + infopath.dentry = vfsub_lookup_one_len(w->whname, w->h_ppath.dentry, + w->whnamelen); + AuTraceErrPtr(infopath.dentry); + if (IS_ERR(infopath.dentry)) { + err = PTR_ERR(infopath.dentry); + goto out; + } + + err = 0; + h_dir = d_inode(w->h_ppath.dentry); + if (elm && d_is_negative(infopath.dentry)) { + err = vfsub_create(h_dir, &infopath, 0600, /*want_excl*/true); + AuTraceErr(err); + if (unlikely(err)) + goto out_dput; + elm->created = 1; + elm->info_dentry = dget(infopath.dentry); + } + + infofile = vfsub_dentry_open(&infopath, O_RDWR); + AuTraceErrPtr(infofile); + if (IS_ERR(infofile)) { + err = PTR_ERR(infofile); + goto out_dput; + } + + h_inode = d_inode(infopath.dentry); + if (elm && i_size_read(h_inode)) { + h_inode = d_inode(w->h_dentry); + elm->info_last = au_drinfo_read_k(infofile, h_inode->i_ino); + AuTraceErrPtr(elm->info_last); + if (IS_ERR(elm->info_last)) { + err = PTR_ERR(elm->info_last); + elm->info_last = NULL; + AuDebugOn(elm->info_dentry); + goto out_fput; + } + } + + if (elm && w->renameback) { + delegated = NULL; + err = vfsub_unlink(h_dir, &infopath, &delegated, /*force*/0); + AuTraceErr(err); + if (unlikely(err == -EWOULDBLOCK)) + iput(delegated); + goto out_fput; + } + + pos = 0; + qname = &w->h_dentry->d_name; + len = sizeof(*w->fdata) + qname->len; + if (!elm) + len = sizeof(*w->fdata) + w->fdata->drinfo.oldnamelen; + ssz = vfsub_write_k(infofile, w->fdata, len, &pos); + if (ssz == len) { + AuDbg("hi%llu, %.*s\n", w->fdata->drinfo.ino, + w->fdata->drinfo.oldnamelen, w->fdata->drinfo.oldname); + goto out_fput; /* success */ + } else { + err = -EIO; + if (ssz < 0) + err = ssz; + /* the caller should revert it using @elm */ + } + +out_fput: + fput(infofile); +out_dput: + dput(infopath.dentry); +out: + AuTraceErr(err); + return err; +} + +struct au_call_drinfo_do_store_args { + int *errp; + struct au_drinfo_store *w; + struct au_drinfo_rev_elm *elm; +}; + +static void au_call_drinfo_do_store(void *args) +{ + struct au_call_drinfo_do_store_args *a = args; + + *a->errp = au_drinfo_do_store(a->w, a->elm); +} + +static int au_drinfo_store_sio(struct au_drinfo_store *w, + struct au_drinfo_rev_elm *elm) +{ + int err, wkq_err; + + if (w->no_sio) + err = au_drinfo_do_store(w, elm); + else { + struct au_call_drinfo_do_store_args a = { + .errp = &err, + .w = w, + .elm = elm + }; + wkq_err = au_wkq_wait(au_call_drinfo_do_store, &a); + if (unlikely(wkq_err)) + err = wkq_err; + } + AuTraceErr(err); + + return err; +} + +static int au_drinfo_store_work_init(struct au_drinfo_store *w, + aufs_bindex_t btgt) +{ + int err; + + memset(w, 0, sizeof(*w)); + w->allocated = roundup_pow_of_two(sizeof(*w->fdata) + 40); + strcpy(w->whname, AUFS_WH_DR_INFO_PFX); + w->infoname = w->whname + sizeof(AUFS_WH_DR_INFO_PFX) - 1; + w->infonamelen = sizeof(w->whname) - sizeof(AUFS_WH_DR_INFO_PFX); + w->btgt = btgt; + w->no_sio = !!uid_eq(current_fsuid(), GLOBAL_ROOT_UID); + + err = -ENOMEM; + w->fdata = kcalloc(1, w->allocated, GFP_NOFS); + if (unlikely(!w->fdata)) { + AuTraceErr(err); + goto out; + } + w->fdata->magic = (__force uint32_t)htonl(AUFS_DRINFO_MAGIC_V1); + err = 0; + +out: + return err; +} + +static void au_drinfo_store_work_fin(struct au_drinfo_store *w) +{ + kfree(w->fdata); +} + +static void au_drinfo_store_rev(struct au_drinfo_rev *rev, + struct au_drinfo_store *w) +{ + struct au_drinfo_rev_elm *elm; + struct inode *h_dir, *delegated; + int err, nelm; + struct path infopath = { + .mnt = w->h_ppath.mnt + }; + + h_dir = d_inode(w->h_ppath.dentry); + IMustLock(h_dir); + + err = 0; + elm = rev->elm; + for (nelm = rev->nelm; nelm > 0; nelm--, elm++) { + AuDebugOn(elm->created && elm->info_last); + if (elm->created) { + AuDbg("here\n"); + delegated = NULL; + infopath.dentry = elm->info_dentry; + err = vfsub_unlink(h_dir, &infopath, &delegated, + !w->no_sio); + AuTraceErr(err); + if (unlikely(err == -EWOULDBLOCK)) + iput(delegated); + dput(elm->info_dentry); + } else if (elm->info_last) { + AuDbg("here\n"); + w->fdata->drinfo = *elm->info_last; + memcpy(w->fdata->drinfo.oldname, + elm->info_last->oldname, + elm->info_last->oldnamelen); + err = au_drinfo_store_sio(w, /*elm*/NULL); + kfree(elm->info_last); + } + if (unlikely(err)) + AuIOErr("%d, %s\n", err, w->whname); + /* go on even if err */ + } +} + +/* caller has to call au_dr_rename_fin() later */ +static int au_drinfo_store(struct dentry *dentry, aufs_bindex_t btgt, + struct qstr *dst_name, void *_rev) +{ + int err, sz, nelm; + aufs_bindex_t bindex, btail; + struct au_drinfo_store work; + struct au_drinfo_rev *rev, **p; + struct au_drinfo_rev_elm *elm; + struct super_block *sb; + struct au_branch *br; + struct au_hinode *hdir; + + err = au_drinfo_store_work_init(&work, btgt); + AuTraceErr(err); + if (unlikely(err)) + goto out; + + err = -ENOMEM; + btail = au_dbtaildir(dentry); + nelm = btail - btgt; + sz = sizeof(*rev) + sizeof(*elm) * nelm; + rev = kcalloc(1, sz, GFP_NOFS); + if (unlikely(!rev)) { + AuTraceErr(err); + goto out_args; + } + rev->nelm = nelm; + elm = rev->elm; + p = _rev; + *p = rev; + + err = 0; + sb = dentry->d_sb; + work.h_ppath.dentry = au_h_dptr(dentry, btgt); + work.h_ppath.mnt = au_sbr_mnt(sb, btgt); + hdir = au_hi(d_inode(dentry), btgt); + au_hn_inode_lock_nested(hdir, AuLsc_I_CHILD); + for (bindex = btgt + 1; bindex <= btail; bindex++, elm++) { + work.h_dentry = au_h_dptr(dentry, bindex); + if (!work.h_dentry) + continue; + + err = au_drinfo_construct(&work.fdata, work.h_dentry, + &work.allocated); + AuTraceErr(err); + if (unlikely(err)) + break; + + work.renameback = au_qstreq(&work.h_dentry->d_name, dst_name); + br = au_sbr(sb, bindex); + work.whnamelen = sizeof(AUFS_WH_DR_INFO_PFX) - 1; + work.whnamelen += au_drinfo_name(br, work.infoname, + work.infonamelen); + AuDbg("whname %.*s, i%llu, %.*s\n", + work.whnamelen, work.whname, + be64_to_cpu((__force __be64)work.fdata->drinfo.ino), + work.fdata->drinfo.oldnamelen, + work.fdata->drinfo.oldname); + + err = au_drinfo_store_sio(&work, elm); + AuTraceErr(err); + if (unlikely(err)) + break; + } + if (unlikely(err)) { + /* revert all drinfo */ + au_drinfo_store_rev(rev, &work); + kfree(rev); + *p = NULL; + } + au_hn_inode_unlock(hdir); + +out_args: + au_drinfo_store_work_fin(&work); +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +int au_dr_rename(struct dentry *src, aufs_bindex_t bindex, + struct qstr *dst_name, void *_rev) +{ + int err, already; + ino_t ino; + struct super_block *sb; + struct au_branch *br; + struct au_dr_br *dr; + struct dentry *h_dentry; + struct inode *h_inode; + struct au_dr_hino *ent; + struct au_drinfo_rev *rev, **p; + + AuDbg("bindex %d\n", bindex); + + err = -ENOMEM; + ent = kmalloc(sizeof(*ent), GFP_NOFS); + if (unlikely(!ent)) + goto out; + + sb = src->d_sb; + br = au_sbr(sb, bindex); + dr = &br->br_dirren; + h_dentry = au_h_dptr(src, bindex); + h_inode = d_inode(h_dentry); + ino = h_inode->i_ino; + ent->dr_h_ino = ino; + already = au_dr_hino_test_add(dr, ino, ent); + AuDbg("b%d, hi%llu, already %d\n", + bindex, (unsigned long long)ino, already); + + err = au_drinfo_store(src, bindex, dst_name, _rev); + AuTraceErr(err); + if (!err) { + p = _rev; + rev = *p; + rev->already = already; + goto out; /* success */ + } + + /* revert */ + if (!already) + au_dr_hino_del(dr, ent); + kfree(ent); + +out: + AuTraceErr(err); + return err; +} + +void au_dr_rename_fin(struct dentry *src, aufs_bindex_t btgt, void *_rev) +{ + struct au_drinfo_rev *rev; + struct au_drinfo_rev_elm *elm; + int nelm; + + rev = _rev; + elm = rev->elm; + for (nelm = rev->nelm; nelm > 0; nelm--, elm++) { + dput(elm->info_dentry); + kfree(elm->info_last); + } + kfree(rev); +} + +void au_dr_rename_rev(struct dentry *src, aufs_bindex_t btgt, void *_rev) +{ + int err; + struct au_drinfo_store work; + struct au_drinfo_rev *rev = _rev; + struct super_block *sb; + struct au_branch *br; + struct inode *h_inode; + struct au_dr_br *dr; + struct au_dr_hino *ent; + + err = au_drinfo_store_work_init(&work, btgt); + if (unlikely(err)) + goto out; + + sb = src->d_sb; + br = au_sbr(sb, btgt); + work.h_ppath.dentry = au_h_dptr(src, btgt); + work.h_ppath.mnt = au_br_mnt(br); + au_drinfo_store_rev(rev, &work); + au_drinfo_store_work_fin(&work); + if (rev->already) + goto out; + + dr = &br->br_dirren; + h_inode = d_inode(work.h_ppath.dentry); + ent = au_dr_hino_find(dr, h_inode->i_ino); + BUG_ON(!ent); + au_dr_hino_del(dr, ent); + kfree(ent); + +out: + kfree(rev); + if (unlikely(err)) + pr_err("failed to remove dirren info\n"); +} + +/* ---------------------------------------------------------------------- */ + +static struct au_drinfo *au_drinfo_do_load(struct path *h_ppath, + char *whname, int whnamelen, + struct dentry **info_dentry) +{ + struct au_drinfo *drinfo; + struct file *f; + struct inode *h_dir; + struct path infopath; + int unlocked; + + AuDbg("%pd/%.*s\n", h_ppath->dentry, whnamelen, whname); + + *info_dentry = NULL; + drinfo = NULL; + unlocked = 0; + h_dir = d_inode(h_ppath->dentry); + inode_lock_shared_nested(h_dir, AuLsc_I_PARENT); + infopath.dentry = vfsub_lookup_one_len(whname, h_ppath->dentry, + whnamelen); + if (IS_ERR(infopath.dentry)) { + drinfo = (void *)infopath.dentry; + goto out; + } + + if (d_is_negative(infopath.dentry)) + goto out_dput; /* success */ + + infopath.mnt = h_ppath->mnt; + f = vfsub_dentry_open(&infopath, O_RDONLY); + inode_unlock_shared(h_dir); + unlocked = 1; + if (IS_ERR(f)) { + drinfo = (void *)f; + goto out_dput; + } + + drinfo = au_drinfo_read_k(f, /*h_ino*/0); + if (IS_ERR_OR_NULL(drinfo)) + goto out_fput; + + AuDbg("oldname %.*s\n", drinfo->oldnamelen, drinfo->oldname); + *info_dentry = dget(infopath.dentry); /* keep it alive */ + +out_fput: + fput(f); +out_dput: + dput(infopath.dentry); +out: + if (!unlocked) + inode_unlock_shared(h_dir); + AuTraceErrPtr(drinfo); + return drinfo; +} + +struct au_drinfo_do_load_args { + struct au_drinfo **drinfop; + struct path *h_ppath; + char *whname; + int whnamelen; + struct dentry **info_dentry; +}; + +static void au_call_drinfo_do_load(void *args) +{ + struct au_drinfo_do_load_args *a = args; + + *a->drinfop = au_drinfo_do_load(a->h_ppath, a->whname, a->whnamelen, + a->info_dentry); +} + +struct au_drinfo_load { + struct path h_ppath; + struct qstr *qname; + unsigned char no_sio; + + aufs_bindex_t ninfo; + struct au_drinfo **drinfo; +}; + +static int au_drinfo_load(struct au_drinfo_load *w, aufs_bindex_t bindex, + struct au_branch *br) +{ + int err, wkq_err, whnamelen, e; + char whname[sizeof(AUFS_WH_DR_INFO_PFX) + AUFS_DIRREN_ENV_VAL_SZ] + = AUFS_WH_DR_INFO_PFX; + struct au_drinfo *drinfo; + struct qstr oldname; + struct inode *h_dir, *delegated; + struct dentry *info_dentry; + struct path infopath; + + whnamelen = sizeof(AUFS_WH_DR_INFO_PFX) - 1; + whnamelen += au_drinfo_name(br, whname + whnamelen, + sizeof(whname) - whnamelen); + if (w->no_sio) + drinfo = au_drinfo_do_load(&w->h_ppath, whname, whnamelen, + &info_dentry); + else { + struct au_drinfo_do_load_args args = { + .drinfop = &drinfo, + .h_ppath = &w->h_ppath, + .whname = whname, + .whnamelen = whnamelen, + .info_dentry = &info_dentry + }; + wkq_err = au_wkq_wait(au_call_drinfo_do_load, &args); + if (unlikely(wkq_err)) + drinfo = ERR_PTR(wkq_err); + } + err = PTR_ERR(drinfo); + if (IS_ERR_OR_NULL(drinfo)) + goto out; + + err = 0; + oldname.len = drinfo->oldnamelen; + oldname.name = drinfo->oldname; + if (au_qstreq(w->qname, &oldname)) { + /* the name is renamed back */ + kfree(drinfo); + drinfo = NULL; + + infopath.dentry = info_dentry; + infopath.mnt = w->h_ppath.mnt; + h_dir = d_inode(w->h_ppath.dentry); + delegated = NULL; + inode_lock_nested(h_dir, AuLsc_I_PARENT); + e = vfsub_unlink(h_dir, &infopath, &delegated, !w->no_sio); + inode_unlock(h_dir); + if (unlikely(e)) + AuIOErr("ignored %d, %pd2\n", e, &infopath.dentry); + if (unlikely(e == -EWOULDBLOCK)) + iput(delegated); + } + kfree(w->drinfo[bindex]); + w->drinfo[bindex] = drinfo; + dput(info_dentry); + +out: + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static void au_dr_lkup_free(struct au_drinfo **drinfo, int n) +{ + struct au_drinfo **p = drinfo; + + while (n-- > 0) + kfree(*drinfo++); + kfree(p); +} + +int au_dr_lkup(struct au_do_lookup_args *lkup, struct dentry *dentry, + aufs_bindex_t btgt) +{ + int err, ninfo; + struct au_drinfo_load w; + aufs_bindex_t bindex, bbot; + struct au_branch *br; + struct inode *h_dir; + struct au_dr_hino *ent; + struct super_block *sb; + + AuDbg("%.*s, name %.*s, whname %.*s, b%d\n", + AuLNPair(&dentry->d_name), AuLNPair(&lkup->dirren.dr_name), + AuLNPair(&lkup->whname), btgt); + + sb = dentry->d_sb; + bbot = au_sbbot(sb); + w.ninfo = bbot + 1; + if (!lkup->dirren.drinfo) { + lkup->dirren.drinfo = kcalloc(w.ninfo, + sizeof(*lkup->dirren.drinfo), + GFP_NOFS); + if (unlikely(!lkup->dirren.drinfo)) { + err = -ENOMEM; + goto out; + } + lkup->dirren.ninfo = w.ninfo; + } + w.drinfo = lkup->dirren.drinfo; + w.no_sio = !!uid_eq(current_fsuid(), GLOBAL_ROOT_UID); + w.h_ppath.dentry = au_h_dptr(dentry, btgt); + AuDebugOn(!w.h_ppath.dentry); + w.h_ppath.mnt = au_sbr_mnt(sb, btgt); + w.qname = &dentry->d_name; + + ninfo = 0; + for (bindex = btgt + 1; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + err = au_drinfo_load(&w, bindex, br); + if (unlikely(err)) + goto out_free; + if (w.drinfo[bindex]) + ninfo++; + } + if (!ninfo) { + br = au_sbr(sb, btgt); + h_dir = d_inode(w.h_ppath.dentry); + ent = au_dr_hino_find(&br->br_dirren, h_dir->i_ino); + AuDebugOn(!ent); + au_dr_hino_del(&br->br_dirren, ent); + kfree(ent); + } + goto out; /* success */ + +out_free: + au_dr_lkup_free(lkup->dirren.drinfo, lkup->dirren.ninfo); + lkup->dirren.ninfo = 0; + lkup->dirren.drinfo = NULL; +out: + AuTraceErr(err); + return err; +} + +void au_dr_lkup_fin(struct au_do_lookup_args *lkup) +{ + au_dr_lkup_free(lkup->dirren.drinfo, lkup->dirren.ninfo); +} + +int au_dr_lkup_name(struct au_do_lookup_args *lkup, aufs_bindex_t btgt) +{ + int err; + struct au_drinfo *drinfo; + + err = 0; + if (!lkup->dirren.drinfo) + goto out; + AuDebugOn(lkup->dirren.ninfo < btgt + 1); + drinfo = lkup->dirren.drinfo[btgt + 1]; + if (!drinfo) + goto out; + + kfree(lkup->whname.name); + lkup->whname.name = NULL; + lkup->dirren.dr_name.len = drinfo->oldnamelen; + lkup->dirren.dr_name.name = drinfo->oldname; + lkup->name = &lkup->dirren.dr_name; + err = au_wh_name_alloc(&lkup->whname, lkup->name); + if (!err) + AuDbg("name %.*s, whname %.*s, b%d\n", + AuLNPair(lkup->name), AuLNPair(&lkup->whname), + btgt); + +out: + AuTraceErr(err); + return err; +} + +int au_dr_lkup_h_ino(struct au_do_lookup_args *lkup, aufs_bindex_t bindex, + ino_t h_ino) +{ + int match; + struct au_drinfo *drinfo; + + match = 1; + if (!lkup->dirren.drinfo) + goto out; + AuDebugOn(lkup->dirren.ninfo < bindex + 1); + drinfo = lkup->dirren.drinfo[bindex + 1]; + if (!drinfo) + goto out; + + match = (drinfo->ino == h_ino); + AuDbg("match %d\n", match); + +out: + return match; +} + +/* ---------------------------------------------------------------------- */ + +int au_dr_opt_set(struct super_block *sb) +{ + int err; + aufs_bindex_t bindex, bbot; + struct au_branch *br; + + err = 0; + bbot = au_sbbot(sb); + for (bindex = 0; !err && bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + err = au_dr_hino(sb, bindex, /*br*/NULL, &br->br_path); + } + + return err; +} + +int au_dr_opt_flush(struct super_block *sb) +{ + int err; + aufs_bindex_t bindex, bbot; + struct au_branch *br; + + err = 0; + bbot = au_sbbot(sb); + for (bindex = 0; !err && bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + if (au_br_writable(br->br_perm)) + err = au_dr_hino(sb, bindex, /*br*/NULL, /*path*/NULL); + } + + return err; +} + +int au_dr_opt_clr(struct super_block *sb, int no_flush) +{ + int err; + aufs_bindex_t bindex, bbot; + struct au_branch *br; + + err = 0; + if (!no_flush) { + err = au_dr_opt_flush(sb); + if (unlikely(err)) + goto out; + } + + bbot = au_sbbot(sb); + for (bindex = 0; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + au_dr_hino_free(&br->br_dirren); + } + +out: + return err; +} diff --git a/fs/aufs/dirren.h b/fs/aufs/dirren.h new file mode 100644 index 00000000000..f5139a30c82 --- /dev/null +++ b/fs/aufs/dirren.h @@ -0,0 +1,140 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2017-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * renamed dir info + */ + +#ifndef __AUFS_DIRREN_H__ +#define __AUFS_DIRREN_H__ + +#ifdef __KERNEL__ + +#include +#include +#include +#include "hbl.h" + +#define AuDirren_NHASH 100 + +#ifdef CONFIG_AUFS_DIRREN +enum au_brid_type { + AuBrid_Unset, + AuBrid_UUID, + AuBrid_FSID, + AuBrid_DEV +}; + +struct au_dr_brid { + enum au_brid_type type; + union { + uuid_t uuid; /* unimplemented yet */ + fsid_t fsid; + dev_t dev; + }; +}; + +/* 20 is the max digits length of ulong 64 */ +/* brid-type "_" uuid "_" inum */ +#define AUFS_DIRREN_FNAME_SZ (1 + 1 + UUID_STRING_LEN + 20) +#define AUFS_DIRREN_ENV_VAL_SZ (AUFS_DIRREN_FNAME_SZ + 1 + 20) + +struct au_dr_hino { + struct hlist_bl_node dr_hnode; + ino_t dr_h_ino; +}; + +struct au_dr_br { + struct hlist_bl_head dr_h_ino[AuDirren_NHASH]; + struct au_dr_brid dr_brid; +}; + +struct au_dr_lookup { + /* dr_name is pointed by struct au_do_lookup_args.name */ + struct qstr dr_name; /* subset of dr_info */ + aufs_bindex_t ninfo; + struct au_drinfo **drinfo; +}; +#else +struct au_dr_hino; +/* empty */ +struct au_dr_br { }; +struct au_dr_lookup { }; +#endif + +/* ---------------------------------------------------------------------- */ + +struct au_branch; +struct au_do_lookup_args; +struct au_hinode; +#ifdef CONFIG_AUFS_DIRREN +int au_dr_hino_test_add(struct au_dr_br *dr, ino_t h_ino, + struct au_dr_hino *add_ent); +void au_dr_hino_free(struct au_dr_br *dr); +int au_dr_br_init(struct super_block *sb, struct au_branch *br, + const struct path *path); +int au_dr_br_fin(struct super_block *sb, struct au_branch *br); +int au_dr_rename(struct dentry *src, aufs_bindex_t bindex, + struct qstr *dst_name, void *_rev); +void au_dr_rename_fin(struct dentry *src, aufs_bindex_t btgt, void *rev); +void au_dr_rename_rev(struct dentry *src, aufs_bindex_t bindex, void *rev); +int au_dr_lkup(struct au_do_lookup_args *lkup, struct dentry *dentry, + aufs_bindex_t bindex); +int au_dr_lkup_name(struct au_do_lookup_args *lkup, aufs_bindex_t btgt); +int au_dr_lkup_h_ino(struct au_do_lookup_args *lkup, aufs_bindex_t bindex, + ino_t h_ino); +void au_dr_lkup_fin(struct au_do_lookup_args *lkup); +int au_dr_opt_set(struct super_block *sb); +int au_dr_opt_flush(struct super_block *sb); +int au_dr_opt_clr(struct super_block *sb, int no_flush); +#else +AuStubInt0(au_dr_hino_test_add, struct au_dr_br *dr, ino_t h_ino, + struct au_dr_hino *add_ent); +AuStubVoid(au_dr_hino_free, struct au_dr_br *dr); +AuStubInt0(au_dr_br_init, struct super_block *sb, struct au_branch *br, + const struct path *path); +AuStubInt0(au_dr_br_fin, struct super_block *sb, struct au_branch *br); +AuStubInt0(au_dr_rename, struct dentry *src, aufs_bindex_t bindex, + struct qstr *dst_name, void *_rev); +AuStubVoid(au_dr_rename_fin, struct dentry *src, aufs_bindex_t btgt, void *rev); +AuStubVoid(au_dr_rename_rev, struct dentry *src, aufs_bindex_t bindex, + void *rev); +AuStubInt0(au_dr_lkup, struct au_do_lookup_args *lkup, struct dentry *dentry, + aufs_bindex_t bindex); +AuStubInt0(au_dr_lkup_name, struct au_do_lookup_args *lkup, aufs_bindex_t btgt); +AuStubInt0(au_dr_lkup_h_ino, struct au_do_lookup_args *lkup, + aufs_bindex_t bindex, ino_t h_ino); +AuStubVoid(au_dr_lkup_fin, struct au_do_lookup_args *lkup); +AuStubInt0(au_dr_opt_set, struct super_block *sb); +AuStubInt0(au_dr_opt_flush, struct super_block *sb); +AuStubInt0(au_dr_opt_clr, struct super_block *sb, int no_flush); +#endif + +/* ---------------------------------------------------------------------- */ + +#ifdef CONFIG_AUFS_DIRREN +static inline int au_dr_ihash(ino_t h_ino) +{ + return h_ino % AuDirren_NHASH; +} +#else +AuStubInt0(au_dr_ihash, ino_t h_ino); +#endif + +#endif /* __KERNEL__ */ +#endif /* __AUFS_DIRREN_H__ */ diff --git a/fs/aufs/dynop.c b/fs/aufs/dynop.c new file mode 100644 index 00000000000..6cc9040372d --- /dev/null +++ b/fs/aufs/dynop.c @@ -0,0 +1,370 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2010-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * dynamically customizable operations for regular files + */ + +#include "aufs.h" + +#define DyPrSym(key) AuDbgSym(key->dk_op.dy_hop) + +/* + * How large will these lists be? + * Usually just a few elements, 20-30 at most for each, I guess. + */ +static struct hlist_bl_head dynop[AuDyLast]; + +static struct au_dykey *dy_gfind_get(struct hlist_bl_head *hbl, + const void *h_op) +{ + struct au_dykey *key, *tmp; + struct hlist_bl_node *pos; + + key = NULL; + hlist_bl_lock(hbl); + hlist_bl_for_each_entry(tmp, pos, hbl, dk_hnode) + if (tmp->dk_op.dy_hop == h_op) { + key = tmp; + kref_get(&key->dk_kref); + break; + } + hlist_bl_unlock(hbl); + + return key; +} + +static struct au_dykey *dy_bradd(struct au_branch *br, struct au_dykey *key) +{ + struct au_dykey **k, *found; + const void *h_op = key->dk_op.dy_hop; + int i; + + found = NULL; + k = br->br_dykey; + for (i = 0; i < AuBrDynOp; i++) + if (k[i]) { + if (k[i]->dk_op.dy_hop == h_op) { + found = k[i]; + break; + } + } else + break; + if (!found) { + spin_lock(&br->br_dykey_lock); + for (; i < AuBrDynOp; i++) + if (k[i]) { + if (k[i]->dk_op.dy_hop == h_op) { + found = k[i]; + break; + } + } else { + k[i] = key; + break; + } + spin_unlock(&br->br_dykey_lock); + BUG_ON(i == AuBrDynOp); /* expand the array */ + } + + return found; +} + +/* kref_get() if @key is already added */ +static struct au_dykey *dy_gadd(struct hlist_bl_head *hbl, struct au_dykey *key) +{ + struct au_dykey *tmp, *found; + struct hlist_bl_node *pos; + const void *h_op = key->dk_op.dy_hop; + + found = NULL; + hlist_bl_lock(hbl); + hlist_bl_for_each_entry(tmp, pos, hbl, dk_hnode) + if (tmp->dk_op.dy_hop == h_op) { + kref_get(&tmp->dk_kref); + found = tmp; + break; + } + if (!found) + hlist_bl_add_head(&key->dk_hnode, hbl); + hlist_bl_unlock(hbl); + + if (!found) + DyPrSym(key); + return found; +} + +static void dy_free_rcu(struct rcu_head *rcu) +{ + struct au_dykey *key; + + key = container_of(rcu, struct au_dykey, dk_rcu); + DyPrSym(key); + kfree(key); +} + +static void dy_free(struct kref *kref) +{ + struct au_dykey *key; + struct hlist_bl_head *hbl; + + key = container_of(kref, struct au_dykey, dk_kref); + hbl = dynop + key->dk_op.dy_type; + au_hbl_del(&key->dk_hnode, hbl); + call_rcu(&key->dk_rcu, dy_free_rcu); +} + +void au_dy_put(struct au_dykey *key) +{ + kref_put(&key->dk_kref, dy_free); +} + +/* ---------------------------------------------------------------------- */ + +#define DyDbgSize(cnt, op) AuDebugOn(cnt != sizeof(op)/sizeof(void *)) + +#ifdef CONFIG_AUFS_DEBUG +#define DyDbgDeclare(cnt) unsigned int cnt = 0 +#define DyDbgInc(cnt) do { cnt++; } while (0) +#else +#define DyDbgDeclare(cnt) do {} while (0) +#define DyDbgInc(cnt) do {} while (0) +#endif + +#define DySet(func, dst, src, h_op, h_sb) do { \ + DyDbgInc(cnt); \ + if (h_op->func) { \ + if (src.func) \ + dst.func = src.func; \ + else \ + AuDbg("%s %s\n", au_sbtype(h_sb), #func); \ + } \ +} while (0) + +#define DySetForce(func, dst, src) do { \ + AuDebugOn(!src.func); \ + DyDbgInc(cnt); \ + dst.func = src.func; \ +} while (0) + +#define DySetAop(func) \ + DySet(func, dyaop->da_op, aufs_aop, h_aop, h_sb) +#define DySetAopForce(func) \ + DySetForce(func, dyaop->da_op, aufs_aop) + +static void dy_aop(struct au_dykey *key, const void *h_op, + struct super_block *h_sb __maybe_unused) +{ + struct au_dyaop *dyaop = (void *)key; + const struct address_space_operations *h_aop = h_op; + DyDbgDeclare(cnt); + + AuDbg("%s\n", au_sbtype(h_sb)); + + DySetAop(writepage); + DySetAopForce(readpage); /* force */ + DySetAop(writepages); + DySetAop(set_page_dirty); + DySetAop(readpages); + DySetAop(write_begin); + DySetAop(write_end); + DySetAop(bmap); + DySetAop(invalidatepage); + DySetAop(releasepage); + DySetAop(freepage); + /* this one will be changed according to an aufs mount option */ + DySetAop(direct_IO); + DySetAop(migratepage); + DySetAop(isolate_page); + DySetAop(putback_page); + DySetAop(launder_page); + DySetAop(is_partially_uptodate); + DySetAop(is_dirty_writeback); + DySetAop(error_remove_page); + DySetAop(swap_activate); + DySetAop(swap_deactivate); + + DyDbgSize(cnt, *h_aop); +} + +/* ---------------------------------------------------------------------- */ + +static void dy_bug(struct kref *kref) +{ + BUG(); +} + +static struct au_dykey *dy_get(struct au_dynop *op, struct au_branch *br) +{ + struct au_dykey *key, *old; + struct hlist_bl_head *hbl; + struct op { + unsigned int sz; + void (*set)(struct au_dykey *key, const void *h_op, + struct super_block *h_sb __maybe_unused); + }; + static const struct op a[] = { + [AuDy_AOP] = { + .sz = sizeof(struct au_dyaop), + .set = dy_aop + } + }; + const struct op *p; + + hbl = dynop + op->dy_type; + key = dy_gfind_get(hbl, op->dy_hop); + if (key) + goto out_add; /* success */ + + p = a + op->dy_type; + key = kzalloc(p->sz, GFP_NOFS); + if (unlikely(!key)) { + key = ERR_PTR(-ENOMEM); + goto out; + } + + key->dk_op.dy_hop = op->dy_hop; + kref_init(&key->dk_kref); + p->set(key, op->dy_hop, au_br_sb(br)); + old = dy_gadd(hbl, key); + if (old) { + kfree(key); + key = old; + } + +out_add: + old = dy_bradd(br, key); + if (old) + /* its ref-count should never be zero here */ + kref_put(&key->dk_kref, dy_bug); +out: + return key; +} + +/* ---------------------------------------------------------------------- */ +/* + * Aufs prohibits O_DIRECT by defaut even if the branch supports it. + * This behaviour is necessary to return an error from open(O_DIRECT) instead + * of the succeeding I/O. The dio mount option enables O_DIRECT and makes + * open(O_DIRECT) always succeed, but the succeeding I/O may return an error. + * See the aufs manual in detail. + */ +static void dy_adx(struct au_dyaop *dyaop, int do_dx) +{ + if (!do_dx) + dyaop->da_op.direct_IO = NULL; + else + dyaop->da_op.direct_IO = aufs_aop.direct_IO; +} + +static struct au_dyaop *dy_aget(struct au_branch *br, + const struct address_space_operations *h_aop, + int do_dx) +{ + struct au_dyaop *dyaop; + struct au_dynop op; + + op.dy_type = AuDy_AOP; + op.dy_haop = h_aop; + dyaop = (void *)dy_get(&op, br); + if (IS_ERR(dyaop)) + goto out; + dy_adx(dyaop, do_dx); + +out: + return dyaop; +} + +int au_dy_iaop(struct inode *inode, aufs_bindex_t bindex, + struct inode *h_inode) +{ + int err, do_dx; + struct super_block *sb; + struct au_branch *br; + struct au_dyaop *dyaop; + + AuDebugOn(!S_ISREG(h_inode->i_mode)); + IiMustWriteLock(inode); + + sb = inode->i_sb; + br = au_sbr(sb, bindex); + do_dx = !!au_opt_test(au_mntflags(sb), DIO); + dyaop = dy_aget(br, h_inode->i_mapping->a_ops, do_dx); + err = PTR_ERR(dyaop); + if (IS_ERR(dyaop)) + /* unnecessary to call dy_fput() */ + goto out; + + err = 0; + inode->i_mapping->a_ops = &dyaop->da_op; + +out: + return err; +} + +/* + * Is it safe to replace a_ops during the inode/file is in operation? + * Yes, I hope so. + */ +int au_dy_irefresh(struct inode *inode) +{ + int err; + aufs_bindex_t btop; + struct inode *h_inode; + + err = 0; + if (S_ISREG(inode->i_mode)) { + btop = au_ibtop(inode); + h_inode = au_h_iptr(inode, btop); + err = au_dy_iaop(inode, btop, h_inode); + } + return err; +} + +void au_dy_arefresh(int do_dx) +{ + struct hlist_bl_head *hbl; + struct hlist_bl_node *pos; + struct au_dykey *key; + + hbl = dynop + AuDy_AOP; + hlist_bl_lock(hbl); + hlist_bl_for_each_entry(key, pos, hbl, dk_hnode) + dy_adx((void *)key, do_dx); + hlist_bl_unlock(hbl); +} + +/* ---------------------------------------------------------------------- */ + +void __init au_dy_init(void) +{ + int i; + + /* make sure that 'struct au_dykey *' can be any type */ + BUILD_BUG_ON(offsetof(struct au_dyaop, da_key)); + + for (i = 0; i < AuDyLast; i++) + INIT_HLIST_BL_HEAD(dynop + i); +} + +void au_dy_fin(void) +{ + int i; + + for (i = 0; i < AuDyLast; i++) + WARN_ON(!hlist_bl_empty(dynop + i)); +} diff --git a/fs/aufs/dynop.h b/fs/aufs/dynop.h new file mode 100644 index 00000000000..d4015351e70 --- /dev/null +++ b/fs/aufs/dynop.h @@ -0,0 +1,75 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2010-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * dynamically customizable operations (for regular files only) + */ + +#ifndef __AUFS_DYNOP_H__ +#define __AUFS_DYNOP_H__ + +#ifdef __KERNEL__ + +#include +#include + +enum {AuDy_AOP, AuDyLast}; + +struct au_dynop { + int dy_type; + union { + const void *dy_hop; + const struct address_space_operations *dy_haop; + }; +}; + +struct au_dykey { + union { + struct hlist_bl_node dk_hnode; + struct rcu_head dk_rcu; + }; + struct au_dynop dk_op; + + /* + * during I am in the branch local array, kref is gotten. when the + * branch is removed, kref is put. + */ + struct kref dk_kref; +}; + +/* stop unioning since their sizes are very different from each other */ +struct au_dyaop { + struct au_dykey da_key; + struct address_space_operations da_op; /* not const */ +}; + +/* ---------------------------------------------------------------------- */ + +/* dynop.c */ +struct au_branch; +void au_dy_put(struct au_dykey *key); +int au_dy_iaop(struct inode *inode, aufs_bindex_t bindex, + struct inode *h_inode); +int au_dy_irefresh(struct inode *inode); +void au_dy_arefresh(int do_dio); + +void __init au_dy_init(void); +void au_dy_fin(void); + +#endif /* __KERNEL__ */ +#endif /* __AUFS_DYNOP_H__ */ diff --git a/fs/aufs/export.c b/fs/aufs/export.c new file mode 100644 index 00000000000..f64dd0a9d7b --- /dev/null +++ b/fs/aufs/export.c @@ -0,0 +1,838 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * export via nfs + */ + +#include +#include +#include +#include +#include +#include +#include "aufs.h" + +union conv { +#ifdef CONFIG_AUFS_INO_T_64 + __u32 a[2]; +#else + __u32 a[1]; +#endif + ino_t ino; +}; + +static ino_t decode_ino(__u32 *a) +{ + union conv u; + + BUILD_BUG_ON(sizeof(u.ino) != sizeof(u.a)); + u.a[0] = a[0]; +#ifdef CONFIG_AUFS_INO_T_64 + u.a[1] = a[1]; +#endif + return u.ino; +} + +static void encode_ino(__u32 *a, ino_t ino) +{ + union conv u; + + u.ino = ino; + a[0] = u.a[0]; +#ifdef CONFIG_AUFS_INO_T_64 + a[1] = u.a[1]; +#endif +} + +/* NFS file handle */ +enum { + Fh_br_id, + Fh_sigen, +#ifdef CONFIG_AUFS_INO_T_64 + /* support 64bit inode number */ + Fh_ino1, + Fh_ino2, + Fh_dir_ino1, + Fh_dir_ino2, +#else + Fh_ino1, + Fh_dir_ino1, +#endif + Fh_igen, + Fh_h_type, + Fh_tail, + + Fh_ino = Fh_ino1, + Fh_dir_ino = Fh_dir_ino1 +}; + +static int au_test_anon(struct dentry *dentry) +{ + /* note: read d_flags without d_lock */ + return !!(dentry->d_flags & DCACHE_DISCONNECTED); +} + +int au_test_nfsd(void) +{ + int ret; + struct task_struct *tsk = current; + char comm[sizeof(tsk->comm)]; + + ret = 0; + if (tsk->flags & PF_KTHREAD) { + get_task_comm(comm, tsk); + ret = !strcmp(comm, "nfsd"); + } + + return ret; +} + +/* ---------------------------------------------------------------------- */ +/* inode generation external table */ + +void au_xigen_inc(struct inode *inode) +{ + loff_t pos; + ssize_t sz; + __u32 igen; + struct super_block *sb; + struct au_sbinfo *sbinfo; + + sb = inode->i_sb; + AuDebugOn(!au_opt_test(au_mntflags(sb), XINO)); + + sbinfo = au_sbi(sb); + pos = inode->i_ino; + pos *= sizeof(igen); + igen = inode->i_generation + 1; + sz = xino_fwrite(sbinfo->si_xwrite, sbinfo->si_xigen, &igen, + sizeof(igen), &pos); + if (sz == sizeof(igen)) + return; /* success */ + + if (unlikely(sz >= 0)) + AuIOErr("xigen error (%zd)\n", sz); +} + +int au_xigen_new(struct inode *inode) +{ + int err; + loff_t pos; + ssize_t sz; + struct super_block *sb; + struct au_sbinfo *sbinfo; + struct file *file; + + err = 0; + /* todo: dirty, at mount time */ + if (inode->i_ino == AUFS_ROOT_INO) + goto out; + sb = inode->i_sb; + SiMustAnyLock(sb); + if (unlikely(!au_opt_test(au_mntflags(sb), XINO))) + goto out; + + err = -EFBIG; + pos = inode->i_ino; + if (unlikely(au_loff_max / sizeof(inode->i_generation) - 1 < pos)) { + AuIOErr1("too large i%lld\n", pos); + goto out; + } + pos *= sizeof(inode->i_generation); + + err = 0; + sbinfo = au_sbi(sb); + file = sbinfo->si_xigen; + BUG_ON(!file); + + if (vfsub_f_size_read(file) + < pos + sizeof(inode->i_generation)) { + inode->i_generation = atomic_inc_return(&sbinfo->si_xigen_next); + sz = xino_fwrite(sbinfo->si_xwrite, file, &inode->i_generation, + sizeof(inode->i_generation), &pos); + } else + sz = xino_fread(sbinfo->si_xread, file, &inode->i_generation, + sizeof(inode->i_generation), &pos); + if (sz == sizeof(inode->i_generation)) + goto out; /* success */ + + err = sz; + if (unlikely(sz >= 0)) { + err = -EIO; + AuIOErr("xigen error (%zd)\n", sz); + } + +out: + return err; +} + +int au_xigen_set(struct super_block *sb, struct path *path) +{ + int err; + struct au_sbinfo *sbinfo; + struct file *file; + + SiMustWriteLock(sb); + + sbinfo = au_sbi(sb); + file = au_xino_create2(sb, path, sbinfo->si_xigen); + err = PTR_ERR(file); + if (IS_ERR(file)) + goto out; + err = 0; + if (sbinfo->si_xigen) + fput(sbinfo->si_xigen); + sbinfo->si_xigen = file; + +out: + AuTraceErr(err); + return err; +} + +void au_xigen_clr(struct super_block *sb) +{ + struct au_sbinfo *sbinfo; + + SiMustWriteLock(sb); + + sbinfo = au_sbi(sb); + if (sbinfo->si_xigen) { + fput(sbinfo->si_xigen); + sbinfo->si_xigen = NULL; + } +} + +/* ---------------------------------------------------------------------- */ + +static struct dentry *decode_by_ino(struct super_block *sb, ino_t ino, + ino_t dir_ino) +{ + struct dentry *dentry, *d; + struct inode *inode; + unsigned int sigen; + + dentry = NULL; + inode = ilookup(sb, ino); + if (!inode) + goto out; + + dentry = ERR_PTR(-ESTALE); + sigen = au_sigen(sb); + if (unlikely(au_is_bad_inode(inode) + || IS_DEADDIR(inode) + || sigen != au_iigen(inode, NULL))) + goto out_iput; + + dentry = NULL; + if (!dir_ino || S_ISDIR(inode->i_mode)) + dentry = d_find_alias(inode); + else { + spin_lock(&inode->i_lock); + hlist_for_each_entry(d, &inode->i_dentry, d_u.d_alias) { + spin_lock(&d->d_lock); + if (!au_test_anon(d) + && d_inode(d->d_parent)->i_ino == dir_ino) { + dentry = dget_dlock(d); + spin_unlock(&d->d_lock); + break; + } + spin_unlock(&d->d_lock); + } + spin_unlock(&inode->i_lock); + } + if (unlikely(dentry && au_digen_test(dentry, sigen))) { + /* need to refresh */ + dput(dentry); + dentry = NULL; + } + +out_iput: + iput(inode); +out: + AuTraceErrPtr(dentry); + return dentry; +} + +/* ---------------------------------------------------------------------- */ + +/* todo: dirty? */ +/* if exportfs_decode_fh() passed vfsmount*, we could be happy */ + +struct au_compare_mnt_args { + /* input */ + struct super_block *sb; + + /* output */ + struct vfsmount *mnt; +}; + +static int au_compare_mnt(struct vfsmount *mnt, void *arg) +{ + struct au_compare_mnt_args *a = arg; + + if (mnt->mnt_sb != a->sb) + return 0; + a->mnt = mntget(mnt); + return 1; +} + +static struct vfsmount *au_mnt_get(struct super_block *sb) +{ + int err; + struct path root; + struct au_compare_mnt_args args = { + .sb = sb + }; + + get_fs_root(current->fs, &root); + rcu_read_lock(); + err = iterate_mounts(au_compare_mnt, &args, root.mnt); + rcu_read_unlock(); + path_put(&root); + AuDebugOn(!err); + AuDebugOn(!args.mnt); + return args.mnt; +} + +struct au_nfsd_si_lock { + unsigned int sigen; + aufs_bindex_t bindex, br_id; + unsigned char force_lock; +}; + +static int si_nfsd_read_lock(struct super_block *sb, + struct au_nfsd_si_lock *nsi_lock) +{ + int err; + aufs_bindex_t bindex; + + si_read_lock(sb, AuLock_FLUSH); + + /* branch id may be wrapped around */ + err = 0; + bindex = au_br_index(sb, nsi_lock->br_id); + if (bindex >= 0 && nsi_lock->sigen + AUFS_BRANCH_MAX > au_sigen(sb)) + goto out; /* success */ + + err = -ESTALE; + bindex = -1; + if (!nsi_lock->force_lock) + si_read_unlock(sb); + +out: + nsi_lock->bindex = bindex; + return err; +} + +struct find_name_by_ino { + struct dir_context ctx; + int called, found; + ino_t ino; + char *name; + int namelen; +}; + +static int +find_name_by_ino(struct dir_context *ctx, const char *name, int namelen, + loff_t offset, u64 ino, unsigned int d_type) +{ + struct find_name_by_ino *a = container_of(ctx, struct find_name_by_ino, + ctx); + + a->called++; + if (a->ino != ino) + return 0; + + memcpy(a->name, name, namelen); + a->namelen = namelen; + a->found = 1; + return 1; +} + +static struct dentry *au_lkup_by_ino(struct path *path, ino_t ino, + struct au_nfsd_si_lock *nsi_lock) +{ + struct dentry *dentry, *parent; + struct file *file; + struct inode *dir; + struct find_name_by_ino arg = { + .ctx = { + .actor = find_name_by_ino + } + }; + int err; + + parent = path->dentry; + if (nsi_lock) + si_read_unlock(parent->d_sb); + file = vfsub_dentry_open(path, au_dir_roflags); + dentry = (void *)file; + if (IS_ERR(file)) + goto out; + + dentry = ERR_PTR(-ENOMEM); + arg.name = (void *)__get_free_page(GFP_NOFS); + if (unlikely(!arg.name)) + goto out_file; + arg.ino = ino; + arg.found = 0; + do { + arg.called = 0; + /* smp_mb(); */ + err = vfsub_iterate_dir(file, &arg.ctx); + } while (!err && !arg.found && arg.called); + dentry = ERR_PTR(err); + if (unlikely(err)) + goto out_name; + /* instead of ENOENT */ + dentry = ERR_PTR(-ESTALE); + if (!arg.found) + goto out_name; + + /* do not call vfsub_lkup_one() */ + dir = d_inode(parent); + dentry = vfsub_lookup_one_len_unlocked(arg.name, parent, arg.namelen); + AuTraceErrPtr(dentry); + if (IS_ERR(dentry)) + goto out_name; + AuDebugOn(au_test_anon(dentry)); + if (unlikely(d_really_is_negative(dentry))) { + dput(dentry); + dentry = ERR_PTR(-ENOENT); + } + +out_name: + free_page((unsigned long)arg.name); +out_file: + fput(file); +out: + if (unlikely(nsi_lock + && si_nfsd_read_lock(parent->d_sb, nsi_lock) < 0)) + if (!IS_ERR(dentry)) { + dput(dentry); + dentry = ERR_PTR(-ESTALE); + } + AuTraceErrPtr(dentry); + return dentry; +} + +static struct dentry *decode_by_dir_ino(struct super_block *sb, ino_t ino, + ino_t dir_ino, + struct au_nfsd_si_lock *nsi_lock) +{ + struct dentry *dentry; + struct path path; + + if (dir_ino != AUFS_ROOT_INO) { + path.dentry = decode_by_ino(sb, dir_ino, 0); + dentry = path.dentry; + if (!path.dentry || IS_ERR(path.dentry)) + goto out; + AuDebugOn(au_test_anon(path.dentry)); + } else + path.dentry = dget(sb->s_root); + + path.mnt = au_mnt_get(sb); + dentry = au_lkup_by_ino(&path, ino, nsi_lock); + path_put(&path); + +out: + AuTraceErrPtr(dentry); + return dentry; +} + +/* ---------------------------------------------------------------------- */ + +static int h_acceptable(void *expv, struct dentry *dentry) +{ + return 1; +} + +static char *au_build_path(struct dentry *h_parent, struct path *h_rootpath, + char *buf, int len, struct super_block *sb) +{ + char *p; + int n; + struct path path; + + p = d_path(h_rootpath, buf, len); + if (IS_ERR(p)) + goto out; + n = strlen(p); + + path.mnt = h_rootpath->mnt; + path.dentry = h_parent; + p = d_path(&path, buf, len); + if (IS_ERR(p)) + goto out; + if (n != 1) + p += n; + + path.mnt = au_mnt_get(sb); + path.dentry = sb->s_root; + p = d_path(&path, buf, len - strlen(p)); + mntput(path.mnt); + if (IS_ERR(p)) + goto out; + if (n != 1) + p[strlen(p)] = '/'; + +out: + AuTraceErrPtr(p); + return p; +} + +static +struct dentry *decode_by_path(struct super_block *sb, ino_t ino, __u32 *fh, + int fh_len, struct au_nfsd_si_lock *nsi_lock) +{ + struct dentry *dentry, *h_parent, *root; + struct super_block *h_sb; + char *pathname, *p; + struct vfsmount *h_mnt; + struct au_branch *br; + int err; + struct path path; + + br = au_sbr(sb, nsi_lock->bindex); + h_mnt = au_br_mnt(br); + h_sb = h_mnt->mnt_sb; + /* todo: call lower fh_to_dentry()? fh_to_parent()? */ + lockdep_off(); + h_parent = exportfs_decode_fh(h_mnt, (void *)(fh + Fh_tail), + fh_len - Fh_tail, fh[Fh_h_type], + h_acceptable, /*context*/NULL); + lockdep_on(); + dentry = h_parent; + if (unlikely(!h_parent || IS_ERR(h_parent))) { + AuWarn1("%s decode_fh failed, %ld\n", + au_sbtype(h_sb), PTR_ERR(h_parent)); + goto out; + } + dentry = NULL; + if (unlikely(au_test_anon(h_parent))) { + AuWarn1("%s decode_fh returned a disconnected dentry\n", + au_sbtype(h_sb)); + goto out_h_parent; + } + + dentry = ERR_PTR(-ENOMEM); + pathname = (void *)__get_free_page(GFP_NOFS); + if (unlikely(!pathname)) + goto out_h_parent; + + root = sb->s_root; + path.mnt = h_mnt; + di_read_lock_parent(root, !AuLock_IR); + path.dentry = au_h_dptr(root, nsi_lock->bindex); + di_read_unlock(root, !AuLock_IR); + p = au_build_path(h_parent, &path, pathname, PAGE_SIZE, sb); + dentry = (void *)p; + if (IS_ERR(p)) + goto out_pathname; + + si_read_unlock(sb); + err = vfsub_kern_path(p, LOOKUP_FOLLOW | LOOKUP_DIRECTORY, &path); + dentry = ERR_PTR(err); + if (unlikely(err)) + goto out_relock; + + dentry = ERR_PTR(-ENOENT); + AuDebugOn(au_test_anon(path.dentry)); + if (unlikely(d_really_is_negative(path.dentry))) + goto out_path; + + if (ino != d_inode(path.dentry)->i_ino) + dentry = au_lkup_by_ino(&path, ino, /*nsi_lock*/NULL); + else + dentry = dget(path.dentry); + +out_path: + path_put(&path); +out_relock: + if (unlikely(si_nfsd_read_lock(sb, nsi_lock) < 0)) + if (!IS_ERR(dentry)) { + dput(dentry); + dentry = ERR_PTR(-ESTALE); + } +out_pathname: + free_page((unsigned long)pathname); +out_h_parent: + dput(h_parent); +out: + AuTraceErrPtr(dentry); + return dentry; +} + +/* ---------------------------------------------------------------------- */ + +static struct dentry * +aufs_fh_to_dentry(struct super_block *sb, struct fid *fid, int fh_len, + int fh_type) +{ + struct dentry *dentry; + __u32 *fh = fid->raw; + struct au_branch *br; + ino_t ino, dir_ino; + struct au_nfsd_si_lock nsi_lock = { + .force_lock = 0 + }; + + dentry = ERR_PTR(-ESTALE); + /* it should never happen, but the file handle is unreliable */ + if (unlikely(fh_len < Fh_tail)) + goto out; + nsi_lock.sigen = fh[Fh_sigen]; + nsi_lock.br_id = fh[Fh_br_id]; + + /* branch id may be wrapped around */ + br = NULL; + if (unlikely(si_nfsd_read_lock(sb, &nsi_lock))) + goto out; + nsi_lock.force_lock = 1; + + /* is this inode still cached? */ + ino = decode_ino(fh + Fh_ino); + /* it should never happen */ + if (unlikely(ino == AUFS_ROOT_INO)) + goto out_unlock; + + dir_ino = decode_ino(fh + Fh_dir_ino); + dentry = decode_by_ino(sb, ino, dir_ino); + if (IS_ERR(dentry)) + goto out_unlock; + if (dentry) + goto accept; + + /* is the parent dir cached? */ + br = au_sbr(sb, nsi_lock.bindex); + au_br_get(br); + dentry = decode_by_dir_ino(sb, ino, dir_ino, &nsi_lock); + if (IS_ERR(dentry)) + goto out_unlock; + if (dentry) + goto accept; + + /* lookup path */ + dentry = decode_by_path(sb, ino, fh, fh_len, &nsi_lock); + if (IS_ERR(dentry)) + goto out_unlock; + if (unlikely(!dentry)) + /* todo?: make it ESTALE */ + goto out_unlock; + +accept: + if (!au_digen_test(dentry, au_sigen(sb)) + && d_inode(dentry)->i_generation == fh[Fh_igen]) + goto out_unlock; /* success */ + + dput(dentry); + dentry = ERR_PTR(-ESTALE); +out_unlock: + if (br) + au_br_put(br); + si_read_unlock(sb); +out: + AuTraceErrPtr(dentry); + return dentry; +} + +#if 0 /* reserved for future use */ +/* support subtreecheck option */ +static struct dentry *aufs_fh_to_parent(struct super_block *sb, struct fid *fid, + int fh_len, int fh_type) +{ + struct dentry *parent; + __u32 *fh = fid->raw; + ino_t dir_ino; + + dir_ino = decode_ino(fh + Fh_dir_ino); + parent = decode_by_ino(sb, dir_ino, 0); + if (IS_ERR(parent)) + goto out; + if (!parent) + parent = decode_by_path(sb, au_br_index(sb, fh[Fh_br_id]), + dir_ino, fh, fh_len); + +out: + AuTraceErrPtr(parent); + return parent; +} +#endif + +/* ---------------------------------------------------------------------- */ + +static int aufs_encode_fh(struct inode *inode, __u32 *fh, int *max_len, + struct inode *dir) +{ + int err; + aufs_bindex_t bindex; + struct super_block *sb, *h_sb; + struct dentry *dentry, *parent, *h_parent; + struct inode *h_dir; + struct au_branch *br; + + err = -ENOSPC; + if (unlikely(*max_len <= Fh_tail)) { + AuWarn1("NFSv2 client (max_len %d)?\n", *max_len); + goto out; + } + + err = FILEID_ROOT; + if (inode->i_ino == AUFS_ROOT_INO) { + AuDebugOn(inode->i_ino != AUFS_ROOT_INO); + goto out; + } + + h_parent = NULL; + sb = inode->i_sb; + err = si_read_lock(sb, AuLock_FLUSH); + if (unlikely(err)) + goto out; + +#ifdef CONFIG_AUFS_DEBUG + if (unlikely(!au_opt_test(au_mntflags(sb), XINO))) + AuWarn1("NFS-exporting requires xino\n"); +#endif + err = -EIO; + parent = NULL; + ii_read_lock_child(inode); + bindex = au_ibtop(inode); + if (!dir) { + dentry = d_find_any_alias(inode); + if (unlikely(!dentry)) + goto out_unlock; + AuDebugOn(au_test_anon(dentry)); + parent = dget_parent(dentry); + dput(dentry); + if (unlikely(!parent)) + goto out_unlock; + if (d_really_is_positive(parent)) + dir = d_inode(parent); + } + + ii_read_lock_parent(dir); + h_dir = au_h_iptr(dir, bindex); + ii_read_unlock(dir); + if (unlikely(!h_dir)) + goto out_parent; + h_parent = d_find_any_alias(h_dir); + if (unlikely(!h_parent)) + goto out_hparent; + + err = -EPERM; + br = au_sbr(sb, bindex); + h_sb = au_br_sb(br); + if (unlikely(!h_sb->s_export_op)) { + AuErr1("%s branch is not exportable\n", au_sbtype(h_sb)); + goto out_hparent; + } + + fh[Fh_br_id] = br->br_id; + fh[Fh_sigen] = au_sigen(sb); + encode_ino(fh + Fh_ino, inode->i_ino); + encode_ino(fh + Fh_dir_ino, dir->i_ino); + fh[Fh_igen] = inode->i_generation; + + *max_len -= Fh_tail; + fh[Fh_h_type] = exportfs_encode_fh(h_parent, (void *)(fh + Fh_tail), + max_len, + /*connectable or subtreecheck*/0); + err = fh[Fh_h_type]; + *max_len += Fh_tail; + /* todo: macros? */ + if (err != FILEID_INVALID) + err = 99; + else + AuWarn1("%s encode_fh failed\n", au_sbtype(h_sb)); + +out_hparent: + dput(h_parent); +out_parent: + dput(parent); +out_unlock: + ii_read_unlock(inode); + si_read_unlock(sb); +out: + if (unlikely(err < 0)) + err = FILEID_INVALID; + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int aufs_commit_metadata(struct inode *inode) +{ + int err; + aufs_bindex_t bindex; + struct super_block *sb; + struct inode *h_inode; + int (*f)(struct inode *inode); + + sb = inode->i_sb; + si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW); + ii_write_lock_child(inode); + bindex = au_ibtop(inode); + AuDebugOn(bindex < 0); + h_inode = au_h_iptr(inode, bindex); + + f = h_inode->i_sb->s_export_op->commit_metadata; + if (f) + err = f(h_inode); + else { + struct writeback_control wbc = { + .sync_mode = WB_SYNC_ALL, + .nr_to_write = 0 /* metadata only */ + }; + + err = sync_inode(h_inode, &wbc); + } + + au_cpup_attr_timesizes(inode); + ii_write_unlock(inode); + si_read_unlock(sb); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static struct export_operations aufs_export_op = { + .fh_to_dentry = aufs_fh_to_dentry, + /* .fh_to_parent = aufs_fh_to_parent, */ + .encode_fh = aufs_encode_fh, + .commit_metadata = aufs_commit_metadata +}; + +void au_export_init(struct super_block *sb) +{ + struct au_sbinfo *sbinfo; + __u32 u; + + BUILD_BUG_ON_MSG(IS_BUILTIN(CONFIG_AUFS_FS) + && IS_MODULE(CONFIG_EXPORTFS), + AUFS_NAME ": unsupported configuration " + "CONFIG_EXPORTFS=m and CONFIG_AUFS_FS=y"); + + sb->s_export_op = &aufs_export_op; + sbinfo = au_sbi(sb); + sbinfo->si_xigen = NULL; + get_random_bytes(&u, sizeof(u)); + BUILD_BUG_ON(sizeof(u) != sizeof(int)); + atomic_set(&sbinfo->si_xigen_next, u); +} diff --git a/fs/aufs/f_op.c b/fs/aufs/f_op.c new file mode 100644 index 00000000000..abddd5f904d --- /dev/null +++ b/fs/aufs/f_op.c @@ -0,0 +1,818 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * file and vm operations + */ + +#include +#include +#include +#include +#include "aufs.h" + +int au_do_open_nondir(struct file *file, int flags, struct file *h_file) +{ + int err; + aufs_bindex_t bindex; + struct dentry *dentry, *h_dentry; + struct au_finfo *finfo; + struct inode *h_inode; + + FiMustWriteLock(file); + + err = 0; + dentry = file->f_path.dentry; + AuDebugOn(IS_ERR_OR_NULL(dentry)); + finfo = au_fi(file); + memset(&finfo->fi_htop, 0, sizeof(finfo->fi_htop)); + atomic_set(&finfo->fi_mmapped, 0); + bindex = au_dbtop(dentry); + if (!h_file) { + h_dentry = au_h_dptr(dentry, bindex); + err = vfsub_test_mntns(file->f_path.mnt, h_dentry->d_sb); + if (unlikely(err)) + goto out; + h_file = au_h_open(dentry, bindex, flags, file, /*force_wr*/0); + } else { + h_dentry = h_file->f_path.dentry; + err = vfsub_test_mntns(file->f_path.mnt, h_dentry->d_sb); + if (unlikely(err)) + goto out; + get_file(h_file); + } + if (IS_ERR(h_file)) + err = PTR_ERR(h_file); + else { + if ((flags & __O_TMPFILE) + && !(flags & O_EXCL)) { + h_inode = file_inode(h_file); + spin_lock(&h_inode->i_lock); + h_inode->i_state |= I_LINKABLE; + spin_unlock(&h_inode->i_lock); + } + au_set_fbtop(file, bindex); + au_set_h_fptr(file, bindex, h_file); + au_update_figen(file); + /* todo: necessary? */ + /* file->f_ra = h_file->f_ra; */ + } + +out: + return err; +} + +static int aufs_open_nondir(struct inode *inode __maybe_unused, + struct file *file) +{ + int err; + struct super_block *sb; + struct au_do_open_args args = { + .open = au_do_open_nondir + }; + + AuDbg("%pD, f_flags 0x%x, f_mode 0x%x\n", + file, vfsub_file_flags(file), file->f_mode); + + sb = file->f_path.dentry->d_sb; + si_read_lock(sb, AuLock_FLUSH); + err = au_do_open(file, &args); + si_read_unlock(sb); + return err; +} + +int aufs_release_nondir(struct inode *inode __maybe_unused, struct file *file) +{ + struct au_finfo *finfo; + aufs_bindex_t bindex; + + finfo = au_fi(file); + au_hbl_del(&finfo->fi_hlist, + &au_sbi(file->f_path.dentry->d_sb)->si_files); + bindex = finfo->fi_btop; + if (bindex >= 0) + au_set_h_fptr(file, bindex, NULL); + + au_finfo_fin(file); + return 0; +} + +/* ---------------------------------------------------------------------- */ + +static int au_do_flush_nondir(struct file *file, fl_owner_t id) +{ + int err; + struct file *h_file; + + err = 0; + h_file = au_hf_top(file); + if (h_file) + err = vfsub_flush(h_file, id); + return err; +} + +static int aufs_flush_nondir(struct file *file, fl_owner_t id) +{ + return au_do_flush(file, id, au_do_flush_nondir); +} + +/* ---------------------------------------------------------------------- */ +/* + * read and write functions acquire [fdi]_rwsem once, but release before + * mmap_sem. This is because to stop a race condition between mmap(2). + * Releasing these aufs-rwsem should be safe, no branch-mamagement (by keeping + * si_rwsem), no harmful copy-up should happen. Actually copy-up may happen in + * read functions after [fdi]_rwsem are released, but it should be harmless. + */ + +/* Callers should call au_read_post() or fput() in the end */ +struct file *au_read_pre(struct file *file, int keep_fi, unsigned int lsc) +{ + struct file *h_file; + int err; + + err = au_reval_and_lock_fdi(file, au_reopen_nondir, /*wlock*/0, lsc); + if (!err) { + di_read_unlock(file->f_path.dentry, AuLock_IR); + h_file = au_hf_top(file); + get_file(h_file); + if (!keep_fi) + fi_read_unlock(file); + } else + h_file = ERR_PTR(err); + + return h_file; +} + +static void au_read_post(struct inode *inode, struct file *h_file) +{ + /* update without lock, I don't think it a problem */ + fsstack_copy_attr_atime(inode, file_inode(h_file)); + fput(h_file); +} + +struct au_write_pre { + /* input */ + unsigned int lsc; + + /* output */ + blkcnt_t blks; + aufs_bindex_t btop; +}; + +/* + * return with iinfo is write-locked + * callers should call au_write_post() or iinfo_write_unlock() + fput() in the + * end + */ +static struct file *au_write_pre(struct file *file, int do_ready, + struct au_write_pre *wpre) +{ + struct file *h_file; + struct dentry *dentry; + int err; + unsigned int lsc; + struct au_pin pin; + + lsc = 0; + if (wpre) + lsc = wpre->lsc; + err = au_reval_and_lock_fdi(file, au_reopen_nondir, /*wlock*/1, lsc); + h_file = ERR_PTR(err); + if (unlikely(err)) + goto out; + + dentry = file->f_path.dentry; + if (do_ready) { + err = au_ready_to_write(file, -1, &pin); + if (unlikely(err)) { + h_file = ERR_PTR(err); + di_write_unlock(dentry); + goto out_fi; + } + } + + di_downgrade_lock(dentry, /*flags*/0); + if (wpre) + wpre->btop = au_fbtop(file); + h_file = au_hf_top(file); + get_file(h_file); + if (wpre) + wpre->blks = file_inode(h_file)->i_blocks; + if (do_ready) + au_unpin(&pin); + di_read_unlock(dentry, /*flags*/0); + +out_fi: + fi_write_unlock(file); +out: + return h_file; +} + +static void au_write_post(struct inode *inode, struct file *h_file, + struct au_write_pre *wpre, ssize_t written) +{ + struct inode *h_inode; + + au_cpup_attr_timesizes(inode); + AuDebugOn(au_ibtop(inode) != wpre->btop); + h_inode = file_inode(h_file); + inode->i_mode = h_inode->i_mode; + ii_write_unlock(inode); + /* AuDbg("blks %llu, %llu\n", (u64)blks, (u64)h_inode->i_blocks); */ + if (written > 0) + au_fhsm_wrote(inode->i_sb, wpre->btop, + /*force*/h_inode->i_blocks > wpre->blks); + fput(h_file); +} + +static ssize_t aufs_read(struct file *file, char __user *buf, size_t count, + loff_t *ppos) +{ + ssize_t err; + struct inode *inode; + struct file *h_file; + struct super_block *sb; + + inode = file_inode(file); + sb = inode->i_sb; + si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW); + + h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + /* filedata may be obsoleted by concurrent copyup, but no problem */ + err = vfsub_read_u(h_file, buf, count, ppos); + /* todo: necessary? */ + /* file->f_ra = h_file->f_ra; */ + au_read_post(inode, h_file); + +out: + si_read_unlock(sb); + return err; +} + +/* + * todo: very ugly + * it locks both of i_mutex and si_rwsem for read in safe. + * if the plink maintenance mode continues forever (that is the problem), + * may loop forever. + */ +static void au_mtx_and_read_lock(struct inode *inode) +{ + int err; + struct super_block *sb = inode->i_sb; + + while (1) { + inode_lock(inode); + err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM); + if (!err) + break; + inode_unlock(inode); + si_read_lock(sb, AuLock_NOPLMW); + si_read_unlock(sb); + } +} + +static ssize_t aufs_write(struct file *file, const char __user *ubuf, + size_t count, loff_t *ppos) +{ + ssize_t err; + struct au_write_pre wpre; + struct inode *inode; + struct file *h_file; + char __user *buf = (char __user *)ubuf; + + inode = file_inode(file); + au_mtx_and_read_lock(inode); + + wpre.lsc = 0; + h_file = au_write_pre(file, /*do_ready*/1, &wpre); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + err = vfsub_write_u(h_file, buf, count, ppos); + au_write_post(inode, h_file, &wpre, err); + +out: + si_read_unlock(inode->i_sb); + inode_unlock(inode); + return err; +} + +static ssize_t au_do_iter(struct file *h_file, int rw, struct kiocb *kio, + struct iov_iter *iov_iter) +{ + ssize_t err; + struct file *file; + ssize_t (*iter)(struct kiocb *, struct iov_iter *); + + err = security_file_permission(h_file, rw); + if (unlikely(err)) + goto out; + + err = -ENOSYS; + iter = NULL; + if (rw == MAY_READ) + iter = h_file->f_op->read_iter; + else if (rw == MAY_WRITE) + iter = h_file->f_op->write_iter; + + file = kio->ki_filp; + kio->ki_filp = h_file; + if (iter) { + lockdep_off(); + err = iter(kio, iov_iter); + lockdep_on(); + } else + /* currently there is no such fs */ + WARN_ON_ONCE(1); + kio->ki_filp = file; + +out: + return err; +} + +static ssize_t aufs_read_iter(struct kiocb *kio, struct iov_iter *iov_iter) +{ + ssize_t err; + struct file *file, *h_file; + struct inode *inode; + struct super_block *sb; + + file = kio->ki_filp; + inode = file_inode(file); + sb = inode->i_sb; + si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW); + + h_file = au_read_pre(file, /*keep_fi*/1, /*lsc*/0); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + if (au_test_loopback_kthread()) { + au_warn_loopback(h_file->f_path.dentry->d_sb); + if (file->f_mapping != h_file->f_mapping) { + file->f_mapping = h_file->f_mapping; + smp_mb(); /* unnecessary? */ + } + } + fi_read_unlock(file); + + err = au_do_iter(h_file, MAY_READ, kio, iov_iter); + /* todo: necessary? */ + /* file->f_ra = h_file->f_ra; */ + au_read_post(inode, h_file); + +out: + si_read_unlock(sb); + return err; +} + +static ssize_t aufs_write_iter(struct kiocb *kio, struct iov_iter *iov_iter) +{ + ssize_t err; + struct au_write_pre wpre; + struct inode *inode; + struct file *file, *h_file; + + file = kio->ki_filp; + inode = file_inode(file); + au_mtx_and_read_lock(inode); + + wpre.lsc = 0; + h_file = au_write_pre(file, /*do_ready*/1, &wpre); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + err = au_do_iter(h_file, MAY_WRITE, kio, iov_iter); + au_write_post(inode, h_file, &wpre, err); + +out: + si_read_unlock(inode->i_sb); + inode_unlock(inode); + return err; +} + +static ssize_t aufs_splice_read(struct file *file, loff_t *ppos, + struct pipe_inode_info *pipe, size_t len, + unsigned int flags) +{ + ssize_t err; + struct file *h_file; + struct inode *inode; + struct super_block *sb; + + inode = file_inode(file); + sb = inode->i_sb; + si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW); + + h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + err = vfsub_splice_to(h_file, ppos, pipe, len, flags); + /* todo: necessasry? */ + /* file->f_ra = h_file->f_ra; */ + au_read_post(inode, h_file); + +out: + si_read_unlock(sb); + return err; +} + +static ssize_t +aufs_splice_write(struct pipe_inode_info *pipe, struct file *file, loff_t *ppos, + size_t len, unsigned int flags) +{ + ssize_t err; + struct au_write_pre wpre; + struct inode *inode; + struct file *h_file; + + inode = file_inode(file); + au_mtx_and_read_lock(inode); + + wpre.lsc = 0; + h_file = au_write_pre(file, /*do_ready*/1, &wpre); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + err = vfsub_splice_from(pipe, h_file, ppos, len, flags); + au_write_post(inode, h_file, &wpre, err); + +out: + si_read_unlock(inode->i_sb); + inode_unlock(inode); + return err; +} + +static long aufs_fallocate(struct file *file, int mode, loff_t offset, + loff_t len) +{ + long err; + struct au_write_pre wpre; + struct inode *inode; + struct file *h_file; + + inode = file_inode(file); + au_mtx_and_read_lock(inode); + + wpre.lsc = 0; + h_file = au_write_pre(file, /*do_ready*/1, &wpre); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + lockdep_off(); + err = vfs_fallocate(h_file, mode, offset, len); + lockdep_on(); + au_write_post(inode, h_file, &wpre, /*written*/1); + +out: + si_read_unlock(inode->i_sb); + inode_unlock(inode); + return err; +} + +static ssize_t aufs_copy_file_range(struct file *src, loff_t src_pos, + struct file *dst, loff_t dst_pos, + size_t len, unsigned int flags) +{ + ssize_t err; + struct au_write_pre wpre; + enum { SRC, DST }; + struct { + struct inode *inode; + struct file *h_file; + struct super_block *h_sb; + } a[2]; +#define a_src a[SRC] +#define a_dst a[DST] + + err = -EINVAL; + a_src.inode = file_inode(src); + if (unlikely(!S_ISREG(a_src.inode->i_mode))) + goto out; + a_dst.inode = file_inode(dst); + if (unlikely(!S_ISREG(a_dst.inode->i_mode))) + goto out; + + au_mtx_and_read_lock(a_dst.inode); + /* + * in order to match the order in di_write_lock2_{child,parent}(), + * use f_path.dentry for this comparision. + */ + if (src->f_path.dentry < dst->f_path.dentry) { + a_src.h_file = au_read_pre(src, /*keep_fi*/1, AuLsc_FI_1); + err = PTR_ERR(a_src.h_file); + if (IS_ERR(a_src.h_file)) + goto out_si; + + wpre.lsc = AuLsc_FI_2; + a_dst.h_file = au_write_pre(dst, /*do_ready*/1, &wpre); + err = PTR_ERR(a_dst.h_file); + if (IS_ERR(a_dst.h_file)) { + au_read_post(a_src.inode, a_src.h_file); + goto out_si; + } + } else { + wpre.lsc = AuLsc_FI_1; + a_dst.h_file = au_write_pre(dst, /*do_ready*/1, &wpre); + err = PTR_ERR(a_dst.h_file); + if (IS_ERR(a_dst.h_file)) + goto out_si; + + a_src.h_file = au_read_pre(src, /*keep_fi*/1, AuLsc_FI_2); + err = PTR_ERR(a_src.h_file); + if (IS_ERR(a_src.h_file)) { + au_write_post(a_dst.inode, a_dst.h_file, &wpre, + /*written*/0); + goto out_si; + } + } + + err = -EXDEV; + a_src.h_sb = file_inode(a_src.h_file)->i_sb; + a_dst.h_sb = file_inode(a_dst.h_file)->i_sb; + if (unlikely(a_src.h_sb != a_dst.h_sb)) { + AuDbgFile(src); + AuDbgFile(dst); + goto out_file; + } + + err = vfsub_copy_file_range(a_src.h_file, src_pos, a_dst.h_file, + dst_pos, len, flags); + +out_file: + au_write_post(a_dst.inode, a_dst.h_file, &wpre, err); + fi_read_unlock(src); + au_read_post(a_src.inode, a_src.h_file); +out_si: + si_read_unlock(a_dst.inode->i_sb); + inode_unlock(a_dst.inode); +out: + return err; +#undef a_src +#undef a_dst +} + +/* ---------------------------------------------------------------------- */ + +/* + * The locking order around current->mmap_sem. + * - in most and regular cases + * file I/O syscall -- aufs_read() or something + * -- si_rwsem for read -- mmap_sem + * (Note that [fdi]i_rwsem are released before mmap_sem). + * - in mmap case + * mmap(2) -- mmap_sem -- aufs_mmap() -- si_rwsem for read -- [fdi]i_rwsem + * This AB-BA order is definitly bad, but is not a problem since "si_rwsem for + * read" allows muliple processes to acquire it and [fdi]i_rwsem are not held in + * file I/O. Aufs needs to stop lockdep in aufs_mmap() though. + * It means that when aufs acquires si_rwsem for write, the process should never + * acquire mmap_sem. + * + * Actually aufs_iterate() holds [fdi]i_rwsem before mmap_sem, but this is not a + * problem either since any directory is not able to be mmap-ed. + * The similar scenario is applied to aufs_readlink() too. + */ + +#if 0 /* stop calling security_file_mmap() */ +/* cf. linux/include/linux/mman.h: calc_vm_prot_bits() */ +#define AuConv_VM_PROT(f, b) _calc_vm_trans(f, VM_##b, PROT_##b) + +static unsigned long au_arch_prot_conv(unsigned long flags) +{ + /* currently ppc64 only */ +#ifdef CONFIG_PPC64 + /* cf. linux/arch/powerpc/include/asm/mman.h */ + AuDebugOn(arch_calc_vm_prot_bits(-1) != VM_SAO); + return AuConv_VM_PROT(flags, SAO); +#else + AuDebugOn(arch_calc_vm_prot_bits(-1)); + return 0; +#endif +} + +static unsigned long au_prot_conv(unsigned long flags) +{ + return AuConv_VM_PROT(flags, READ) + | AuConv_VM_PROT(flags, WRITE) + | AuConv_VM_PROT(flags, EXEC) + | au_arch_prot_conv(flags); +} + +/* cf. linux/include/linux/mman.h: calc_vm_flag_bits() */ +#define AuConv_VM_MAP(f, b) _calc_vm_trans(f, VM_##b, MAP_##b) + +static unsigned long au_flag_conv(unsigned long flags) +{ + return AuConv_VM_MAP(flags, GROWSDOWN) + | AuConv_VM_MAP(flags, DENYWRITE) + | AuConv_VM_MAP(flags, LOCKED); +} +#endif + +static int aufs_mmap(struct file *file, struct vm_area_struct *vma) +{ + int err; + const unsigned char wlock + = (file->f_mode & FMODE_WRITE) && (vma->vm_flags & VM_SHARED); + struct super_block *sb; + struct file *h_file; + struct inode *inode; + + AuDbgVmRegion(file, vma); + + inode = file_inode(file); + sb = inode->i_sb; + lockdep_off(); + si_read_lock(sb, AuLock_NOPLMW); + + h_file = au_write_pre(file, wlock, /*wpre*/NULL); + lockdep_on(); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + err = 0; + au_set_mmapped(file); + au_vm_file_reset(vma, h_file); + /* + * we cannot call security_mmap_file() here since it may acquire + * mmap_sem or i_mutex. + * + * err = security_mmap_file(h_file, au_prot_conv(vma->vm_flags), + * au_flag_conv(vma->vm_flags)); + */ + if (!err) + err = call_mmap(h_file, vma); + if (!err) { + au_vm_prfile_set(vma, file); + fsstack_copy_attr_atime(inode, file_inode(h_file)); + goto out_fput; /* success */ + } + au_unset_mmapped(file); + au_vm_file_reset(vma, file); + +out_fput: + lockdep_off(); + ii_write_unlock(inode); + lockdep_on(); + fput(h_file); +out: + lockdep_off(); + si_read_unlock(sb); + lockdep_on(); + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int aufs_fsync_nondir(struct file *file, loff_t start, loff_t end, + int datasync) +{ + int err; + struct au_write_pre wpre; + struct inode *inode; + struct file *h_file; + + err = 0; /* -EBADF; */ /* posix? */ + if (unlikely(!(file->f_mode & FMODE_WRITE))) + goto out; + + inode = file_inode(file); + au_mtx_and_read_lock(inode); + + wpre.lsc = 0; + h_file = au_write_pre(file, /*do_ready*/1, &wpre); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out_unlock; + + err = vfsub_fsync(h_file, &h_file->f_path, datasync); + au_write_post(inode, h_file, &wpre, /*written*/0); + +out_unlock: + si_read_unlock(inode->i_sb); + inode_unlock(inode); +out: + return err; +} + +static int aufs_fasync(int fd, struct file *file, int flag) +{ + int err; + struct file *h_file; + struct super_block *sb; + + sb = file->f_path.dentry->d_sb; + si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW); + + h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + if (h_file->f_op->fasync) + err = h_file->f_op->fasync(fd, h_file, flag); + fput(h_file); /* instead of au_read_post() */ + +out: + si_read_unlock(sb); + return err; +} + +static int aufs_setfl(struct file *file, unsigned long arg) +{ + int err; + struct file *h_file; + struct super_block *sb; + + sb = file->f_path.dentry->d_sb; + si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW); + + h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + /* stop calling h_file->fasync */ + arg |= vfsub_file_flags(file) & FASYNC; + err = setfl(/*unused fd*/-1, h_file, arg); + fput(h_file); /* instead of au_read_post() */ + +out: + si_read_unlock(sb); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* no one supports this operation, currently */ +#if 0 +static ssize_t aufs_sendpage(struct file *file, struct page *page, int offset, + size_t len, loff_t *pos, int more) +{ +} +#endif + +/* ---------------------------------------------------------------------- */ + +const struct file_operations aufs_file_fop = { + .owner = THIS_MODULE, + + .llseek = default_llseek, + + .read = aufs_read, + .write = aufs_write, + .read_iter = aufs_read_iter, + .write_iter = aufs_write_iter, + +#ifdef CONFIG_AUFS_POLL + .poll = aufs_poll, +#endif + .unlocked_ioctl = aufs_ioctl_nondir, +#ifdef CONFIG_COMPAT + .compat_ioctl = aufs_compat_ioctl_nondir, +#endif + .mmap = aufs_mmap, + .open = aufs_open_nondir, + .flush = aufs_flush_nondir, + .release = aufs_release_nondir, + .fsync = aufs_fsync_nondir, + .fasync = aufs_fasync, + /* .sendpage = aufs_sendpage, */ + .setfl = aufs_setfl, + .splice_write = aufs_splice_write, + .splice_read = aufs_splice_read, +#if 0 + .aio_splice_write = aufs_aio_splice_write, + .aio_splice_read = aufs_aio_splice_read, +#endif + .fallocate = aufs_fallocate, + .copy_file_range = aufs_copy_file_range +}; diff --git a/fs/aufs/fhsm.c b/fs/aufs/fhsm.c new file mode 100644 index 00000000000..9162fb324a0 --- /dev/null +++ b/fs/aufs/fhsm.c @@ -0,0 +1,427 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2011-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/* + * File-based Hierarchy Storage Management + */ + +#include +#include +#include +#include +#include "aufs.h" + +static aufs_bindex_t au_fhsm_bottom(struct super_block *sb) +{ + struct au_sbinfo *sbinfo; + struct au_fhsm *fhsm; + + SiMustAnyLock(sb); + + sbinfo = au_sbi(sb); + fhsm = &sbinfo->si_fhsm; + AuDebugOn(!fhsm); + return fhsm->fhsm_bottom; +} + +void au_fhsm_set_bottom(struct super_block *sb, aufs_bindex_t bindex) +{ + struct au_sbinfo *sbinfo; + struct au_fhsm *fhsm; + + SiMustWriteLock(sb); + + sbinfo = au_sbi(sb); + fhsm = &sbinfo->si_fhsm; + AuDebugOn(!fhsm); + fhsm->fhsm_bottom = bindex; +} + +/* ---------------------------------------------------------------------- */ + +static int au_fhsm_test_jiffy(struct au_sbinfo *sbinfo, struct au_branch *br) +{ + struct au_br_fhsm *bf; + + bf = br->br_fhsm; + MtxMustLock(&bf->bf_lock); + + return !bf->bf_readable + || time_after(jiffies, + bf->bf_jiffy + sbinfo->si_fhsm.fhsm_expire); +} + +/* ---------------------------------------------------------------------- */ + +static void au_fhsm_notify(struct super_block *sb, int val) +{ + struct au_sbinfo *sbinfo; + struct au_fhsm *fhsm; + + SiMustAnyLock(sb); + + sbinfo = au_sbi(sb); + fhsm = &sbinfo->si_fhsm; + if (au_fhsm_pid(fhsm) + && atomic_read(&fhsm->fhsm_readable) != -1) { + atomic_set(&fhsm->fhsm_readable, val); + if (val) + wake_up(&fhsm->fhsm_wqh); + } +} + +static int au_fhsm_stfs(struct super_block *sb, aufs_bindex_t bindex, + struct aufs_stfs *rstfs, int do_lock, int do_notify) +{ + int err; + struct au_branch *br; + struct au_br_fhsm *bf; + + br = au_sbr(sb, bindex); + AuDebugOn(au_br_rdonly(br)); + bf = br->br_fhsm; + AuDebugOn(!bf); + + if (do_lock) + mutex_lock(&bf->bf_lock); + else + MtxMustLock(&bf->bf_lock); + + /* sb->s_root for NFS is unreliable */ + err = au_br_stfs(br, &bf->bf_stfs); + if (unlikely(err)) { + AuErr1("FHSM failed (%d), b%d, ignored.\n", bindex, err); + goto out; + } + + bf->bf_jiffy = jiffies; + bf->bf_readable = 1; + if (do_notify) + au_fhsm_notify(sb, /*val*/1); + if (rstfs) + *rstfs = bf->bf_stfs; + +out: + if (do_lock) + mutex_unlock(&bf->bf_lock); + au_fhsm_notify(sb, /*val*/1); + + return err; +} + +void au_fhsm_wrote(struct super_block *sb, aufs_bindex_t bindex, int force) +{ + int err; + struct au_sbinfo *sbinfo; + struct au_fhsm *fhsm; + struct au_branch *br; + struct au_br_fhsm *bf; + + AuDbg("b%d, force %d\n", bindex, force); + SiMustAnyLock(sb); + + sbinfo = au_sbi(sb); + fhsm = &sbinfo->si_fhsm; + if (!au_ftest_si(sbinfo, FHSM) + || fhsm->fhsm_bottom == bindex) + return; + + br = au_sbr(sb, bindex); + bf = br->br_fhsm; + AuDebugOn(!bf); + mutex_lock(&bf->bf_lock); + if (force + || au_fhsm_pid(fhsm) + || au_fhsm_test_jiffy(sbinfo, br)) + err = au_fhsm_stfs(sb, bindex, /*rstfs*/NULL, /*do_lock*/0, + /*do_notify*/1); + mutex_unlock(&bf->bf_lock); +} + +void au_fhsm_wrote_all(struct super_block *sb, int force) +{ + aufs_bindex_t bindex, bbot; + struct au_branch *br; + + /* exclude the bottom */ + bbot = au_fhsm_bottom(sb); + for (bindex = 0; bindex < bbot; bindex++) { + br = au_sbr(sb, bindex); + if (au_br_fhsm(br->br_perm)) + au_fhsm_wrote(sb, bindex, force); + } +} + +/* ---------------------------------------------------------------------- */ + +static __poll_t au_fhsm_poll(struct file *file, struct poll_table_struct *wait) +{ + __poll_t mask; + struct au_sbinfo *sbinfo; + struct au_fhsm *fhsm; + + mask = 0; + sbinfo = file->private_data; + fhsm = &sbinfo->si_fhsm; + poll_wait(file, &fhsm->fhsm_wqh, wait); + if (atomic_read(&fhsm->fhsm_readable)) + mask = EPOLLIN /* | EPOLLRDNORM */; + + if (!mask) + AuDbg("mask 0x%x\n", mask); + return mask; +} + +static int au_fhsm_do_read_one(struct aufs_stbr __user *stbr, + struct aufs_stfs *stfs, __s16 brid) +{ + int err; + + err = copy_to_user(&stbr->stfs, stfs, sizeof(*stfs)); + if (!err) + err = __put_user(brid, &stbr->brid); + if (unlikely(err)) + err = -EFAULT; + + return err; +} + +static ssize_t au_fhsm_do_read(struct super_block *sb, + struct aufs_stbr __user *stbr, size_t count) +{ + ssize_t err; + int nstbr; + aufs_bindex_t bindex, bbot; + struct au_branch *br; + struct au_br_fhsm *bf; + + /* except the bottom branch */ + err = 0; + nstbr = 0; + bbot = au_fhsm_bottom(sb); + for (bindex = 0; !err && bindex < bbot; bindex++) { + br = au_sbr(sb, bindex); + if (!au_br_fhsm(br->br_perm)) + continue; + + bf = br->br_fhsm; + mutex_lock(&bf->bf_lock); + if (bf->bf_readable) { + err = -EFAULT; + if (count >= sizeof(*stbr)) + err = au_fhsm_do_read_one(stbr++, &bf->bf_stfs, + br->br_id); + if (!err) { + bf->bf_readable = 0; + count -= sizeof(*stbr); + nstbr++; + } + } + mutex_unlock(&bf->bf_lock); + } + if (!err) + err = sizeof(*stbr) * nstbr; + + return err; +} + +static ssize_t au_fhsm_read(struct file *file, char __user *buf, size_t count, + loff_t *pos) +{ + ssize_t err; + int readable; + aufs_bindex_t nfhsm, bindex, bbot; + struct au_sbinfo *sbinfo; + struct au_fhsm *fhsm; + struct au_branch *br; + struct super_block *sb; + + err = 0; + sbinfo = file->private_data; + fhsm = &sbinfo->si_fhsm; +need_data: + spin_lock_irq(&fhsm->fhsm_wqh.lock); + if (!atomic_read(&fhsm->fhsm_readable)) { + if (vfsub_file_flags(file) & O_NONBLOCK) + err = -EAGAIN; + else + err = wait_event_interruptible_locked_irq + (fhsm->fhsm_wqh, + atomic_read(&fhsm->fhsm_readable)); + } + spin_unlock_irq(&fhsm->fhsm_wqh.lock); + if (unlikely(err)) + goto out; + + /* sb may already be dead */ + au_rw_read_lock(&sbinfo->si_rwsem); + readable = atomic_read(&fhsm->fhsm_readable); + if (readable > 0) { + sb = sbinfo->si_sb; + AuDebugOn(!sb); + /* exclude the bottom branch */ + nfhsm = 0; + bbot = au_fhsm_bottom(sb); + for (bindex = 0; bindex < bbot; bindex++) { + br = au_sbr(sb, bindex); + if (au_br_fhsm(br->br_perm)) + nfhsm++; + } + err = -EMSGSIZE; + if (nfhsm * sizeof(struct aufs_stbr) <= count) { + atomic_set(&fhsm->fhsm_readable, 0); + err = au_fhsm_do_read(sbinfo->si_sb, (void __user *)buf, + count); + } + } + au_rw_read_unlock(&sbinfo->si_rwsem); + if (!readable) + goto need_data; + +out: + return err; +} + +static int au_fhsm_release(struct inode *inode, struct file *file) +{ + struct au_sbinfo *sbinfo; + struct au_fhsm *fhsm; + + /* sb may already be dead */ + sbinfo = file->private_data; + fhsm = &sbinfo->si_fhsm; + spin_lock(&fhsm->fhsm_spin); + fhsm->fhsm_pid = 0; + spin_unlock(&fhsm->fhsm_spin); + kobject_put(&sbinfo->si_kobj); + + return 0; +} + +static const struct file_operations au_fhsm_fops = { + .owner = THIS_MODULE, + .llseek = noop_llseek, + .read = au_fhsm_read, + .poll = au_fhsm_poll, + .release = au_fhsm_release +}; + +int au_fhsm_fd(struct super_block *sb, int oflags) +{ + int err, fd; + struct au_sbinfo *sbinfo; + struct au_fhsm *fhsm; + + err = -EPERM; + if (unlikely(!capable(CAP_SYS_ADMIN))) + goto out; + + err = -EINVAL; + if (unlikely(oflags & ~(O_CLOEXEC | O_NONBLOCK))) + goto out; + + err = 0; + sbinfo = au_sbi(sb); + fhsm = &sbinfo->si_fhsm; + spin_lock(&fhsm->fhsm_spin); + if (!fhsm->fhsm_pid) + fhsm->fhsm_pid = current->pid; + else + err = -EBUSY; + spin_unlock(&fhsm->fhsm_spin); + if (unlikely(err)) + goto out; + + oflags |= O_RDONLY; + /* oflags |= FMODE_NONOTIFY; */ + fd = anon_inode_getfd("[aufs_fhsm]", &au_fhsm_fops, sbinfo, oflags); + err = fd; + if (unlikely(fd < 0)) + goto out_pid; + + /* succeed reglardless 'fhsm' status */ + kobject_get(&sbinfo->si_kobj); + si_noflush_read_lock(sb); + if (au_ftest_si(sbinfo, FHSM)) + au_fhsm_wrote_all(sb, /*force*/0); + si_read_unlock(sb); + goto out; /* success */ + +out_pid: + spin_lock(&fhsm->fhsm_spin); + fhsm->fhsm_pid = 0; + spin_unlock(&fhsm->fhsm_spin); +out: + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +int au_fhsm_br_alloc(struct au_branch *br) +{ + int err; + + err = 0; + br->br_fhsm = kmalloc(sizeof(*br->br_fhsm), GFP_NOFS); + if (br->br_fhsm) + au_br_fhsm_init(br->br_fhsm); + else + err = -ENOMEM; + + return err; +} + +/* ---------------------------------------------------------------------- */ + +void au_fhsm_fin(struct super_block *sb) +{ + au_fhsm_notify(sb, /*val*/-1); +} + +void au_fhsm_init(struct au_sbinfo *sbinfo) +{ + struct au_fhsm *fhsm; + + fhsm = &sbinfo->si_fhsm; + spin_lock_init(&fhsm->fhsm_spin); + init_waitqueue_head(&fhsm->fhsm_wqh); + atomic_set(&fhsm->fhsm_readable, 0); + fhsm->fhsm_expire + = msecs_to_jiffies(AUFS_FHSM_CACHE_DEF_SEC * MSEC_PER_SEC); + fhsm->fhsm_bottom = -1; +} + +void au_fhsm_set(struct au_sbinfo *sbinfo, unsigned int sec) +{ + sbinfo->si_fhsm.fhsm_expire + = msecs_to_jiffies(sec * MSEC_PER_SEC); +} + +void au_fhsm_show(struct seq_file *seq, struct au_sbinfo *sbinfo) +{ + unsigned int u; + + if (!au_ftest_si(sbinfo, FHSM)) + return; + + u = jiffies_to_msecs(sbinfo->si_fhsm.fhsm_expire) / MSEC_PER_SEC; + if (u != AUFS_FHSM_CACHE_DEF_SEC) + seq_printf(seq, ",fhsm_sec=%u", u); +} diff --git a/fs/aufs/file.c b/fs/aufs/file.c new file mode 100644 index 00000000000..2de9a8d0cbe --- /dev/null +++ b/fs/aufs/file.c @@ -0,0 +1,857 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * handling file/dir, and address_space operation + */ + +#ifdef CONFIG_AUFS_DEBUG +#include +#endif +#include +#include "aufs.h" + +/* drop flags for writing */ +unsigned int au_file_roflags(unsigned int flags) +{ + flags &= ~(O_WRONLY | O_RDWR | O_APPEND | O_CREAT | O_TRUNC); + flags |= O_RDONLY | O_NOATIME; + return flags; +} + +/* common functions to regular file and dir */ +struct file *au_h_open(struct dentry *dentry, aufs_bindex_t bindex, int flags, + struct file *file, int force_wr) +{ + struct file *h_file; + struct dentry *h_dentry; + struct inode *h_inode; + struct super_block *sb; + struct au_branch *br; + struct path h_path; + int err; + + /* a race condition can happen between open and unlink/rmdir */ + h_file = ERR_PTR(-ENOENT); + h_dentry = au_h_dptr(dentry, bindex); + if (au_test_nfsd() && (!h_dentry || d_is_negative(h_dentry))) + goto out; + h_inode = d_inode(h_dentry); + spin_lock(&h_dentry->d_lock); + err = (!d_unhashed(dentry) && d_unlinked(h_dentry)) + /* || !d_inode(dentry)->i_nlink */ + ; + spin_unlock(&h_dentry->d_lock); + if (unlikely(err)) + goto out; + + sb = dentry->d_sb; + br = au_sbr(sb, bindex); + err = au_br_test_oflag(flags, br); + h_file = ERR_PTR(err); + if (unlikely(err)) + goto out; + + /* drop flags for writing */ + if (au_test_ro(sb, bindex, d_inode(dentry))) { + if (force_wr && !(flags & O_WRONLY)) + force_wr = 0; + flags = au_file_roflags(flags); + if (force_wr) { + h_file = ERR_PTR(-EROFS); + flags = au_file_roflags(flags); + if (unlikely(vfsub_native_ro(h_inode) + || IS_APPEND(h_inode))) + goto out; + flags &= ~O_ACCMODE; + flags |= O_WRONLY; + } + } + flags &= ~O_CREAT; + au_br_get(br); + h_path.dentry = h_dentry; + h_path.mnt = au_br_mnt(br); + h_file = vfsub_dentry_open(&h_path, flags); + if (IS_ERR(h_file)) + goto out_br; + + if (flags & __FMODE_EXEC) { + err = deny_write_access(h_file); + if (unlikely(err)) { + fput(h_file); + h_file = ERR_PTR(err); + goto out_br; + } + } + fsnotify_open(h_file); + goto out; /* success */ + +out_br: + au_br_put(br); +out: + return h_file; +} + +static int au_cmoo(struct dentry *dentry) +{ + int err, cmoo, matched; + unsigned int udba; + struct path h_path; + struct au_pin pin; + struct au_cp_generic cpg = { + .dentry = dentry, + .bdst = -1, + .bsrc = -1, + .len = -1, + .pin = &pin, + .flags = AuCpup_DTIME | AuCpup_HOPEN + }; + struct inode *delegated; + struct super_block *sb; + struct au_sbinfo *sbinfo; + struct au_fhsm *fhsm; + pid_t pid; + struct au_branch *br; + struct dentry *parent; + struct au_hinode *hdir; + + DiMustWriteLock(dentry); + IiMustWriteLock(d_inode(dentry)); + + err = 0; + if (IS_ROOT(dentry)) + goto out; + cpg.bsrc = au_dbtop(dentry); + if (!cpg.bsrc) + goto out; + + sb = dentry->d_sb; + sbinfo = au_sbi(sb); + fhsm = &sbinfo->si_fhsm; + pid = au_fhsm_pid(fhsm); + rcu_read_lock(); + matched = (pid + && (current->pid == pid + || rcu_dereference(current->real_parent)->pid == pid)); + rcu_read_unlock(); + if (matched) + goto out; + + br = au_sbr(sb, cpg.bsrc); + cmoo = au_br_cmoo(br->br_perm); + if (!cmoo) + goto out; + if (!d_is_reg(dentry)) + cmoo &= AuBrAttr_COO_ALL; + if (!cmoo) + goto out; + + parent = dget_parent(dentry); + di_write_lock_parent(parent); + err = au_wbr_do_copyup_bu(dentry, cpg.bsrc - 1); + cpg.bdst = err; + if (unlikely(err < 0)) { + err = 0; /* there is no upper writable branch */ + goto out_dgrade; + } + AuDbg("bsrc %d, bdst %d\n", cpg.bsrc, cpg.bdst); + + /* do not respect the coo attrib for the target branch */ + err = au_cpup_dirs(dentry, cpg.bdst); + if (unlikely(err)) + goto out_dgrade; + + di_downgrade_lock(parent, AuLock_IR); + udba = au_opt_udba(sb); + err = au_pin(&pin, dentry, cpg.bdst, udba, + AuPin_DI_LOCKED | AuPin_MNT_WRITE); + if (unlikely(err)) + goto out_parent; + + err = au_sio_cpup_simple(&cpg); + au_unpin(&pin); + if (unlikely(err)) + goto out_parent; + if (!(cmoo & AuBrWAttr_MOO)) + goto out_parent; /* success */ + + err = au_pin(&pin, dentry, cpg.bsrc, udba, + AuPin_DI_LOCKED | AuPin_MNT_WRITE); + if (unlikely(err)) + goto out_parent; + + h_path.mnt = au_br_mnt(br); + h_path.dentry = au_h_dptr(dentry, cpg.bsrc); + hdir = au_hi(d_inode(parent), cpg.bsrc); + delegated = NULL; + err = vfsub_unlink(hdir->hi_inode, &h_path, &delegated, /*force*/1); + au_unpin(&pin); + /* todo: keep h_dentry or not? */ + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal unlink\n"); + iput(delegated); + } + if (unlikely(err)) { + pr_err("unlink %pd after coo failed (%d), ignored\n", + dentry, err); + err = 0; + } + goto out_parent; /* success */ + +out_dgrade: + di_downgrade_lock(parent, AuLock_IR); +out_parent: + di_read_unlock(parent, AuLock_IR); + dput(parent); +out: + AuTraceErr(err); + return err; +} + +int au_do_open(struct file *file, struct au_do_open_args *args) +{ + int err, aopen = args->aopen; + struct dentry *dentry; + struct au_finfo *finfo; + + if (!aopen) + err = au_finfo_init(file, args->fidir); + else { + lockdep_off(); + err = au_finfo_init(file, args->fidir); + lockdep_on(); + } + if (unlikely(err)) + goto out; + + dentry = file->f_path.dentry; + AuDebugOn(IS_ERR_OR_NULL(dentry)); + di_write_lock_child(dentry); + err = au_cmoo(dentry); + di_downgrade_lock(dentry, AuLock_IR); + if (!err) { + if (!aopen) + err = args->open(file, vfsub_file_flags(file), NULL); + else { + lockdep_off(); + err = args->open(file, vfsub_file_flags(file), NULL); + lockdep_on(); + } + } + di_read_unlock(dentry, AuLock_IR); + + finfo = au_fi(file); + if (!err) { + finfo->fi_file = file; + au_hbl_add(&finfo->fi_hlist, + &au_sbi(file->f_path.dentry->d_sb)->si_files); + } + if (!aopen) + fi_write_unlock(file); + else { + lockdep_off(); + fi_write_unlock(file); + lockdep_on(); + } + if (unlikely(err)) { + finfo->fi_hdir = NULL; + au_finfo_fin(file); + } + +out: + AuTraceErr(err); + return err; +} + +int au_reopen_nondir(struct file *file) +{ + int err; + aufs_bindex_t btop; + struct dentry *dentry; + struct file *h_file, *h_file_tmp; + + dentry = file->f_path.dentry; + btop = au_dbtop(dentry); + h_file_tmp = NULL; + if (au_fbtop(file) == btop) { + h_file = au_hf_top(file); + if (file->f_mode == h_file->f_mode) + return 0; /* success */ + h_file_tmp = h_file; + get_file(h_file_tmp); + au_set_h_fptr(file, btop, NULL); + } + AuDebugOn(au_fi(file)->fi_hdir); + /* + * it can happen + * file exists on both of rw and ro + * open --> dbtop and fbtop are both 0 + * prepend a branch as rw, "rw" become ro + * remove rw/file + * delete the top branch, "rw" becomes rw again + * --> dbtop is 1, fbtop is still 0 + * write --> fbtop is 0 but dbtop is 1 + */ + /* AuDebugOn(au_fbtop(file) < btop); */ + + h_file = au_h_open(dentry, btop, vfsub_file_flags(file) & ~O_TRUNC, + file, /*force_wr*/0); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) { + if (h_file_tmp) { + au_sbr_get(dentry->d_sb, btop); + au_set_h_fptr(file, btop, h_file_tmp); + h_file_tmp = NULL; + } + goto out; /* todo: close all? */ + } + + err = 0; + au_set_fbtop(file, btop); + au_set_h_fptr(file, btop, h_file); + au_update_figen(file); + /* todo: necessary? */ + /* file->f_ra = h_file->f_ra; */ + +out: + if (h_file_tmp) + fput(h_file_tmp); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int au_reopen_wh(struct file *file, aufs_bindex_t btgt, + struct dentry *hi_wh) +{ + int err; + aufs_bindex_t btop; + struct au_dinfo *dinfo; + struct dentry *h_dentry; + struct au_hdentry *hdp; + + dinfo = au_di(file->f_path.dentry); + AuRwMustWriteLock(&dinfo->di_rwsem); + + btop = dinfo->di_btop; + dinfo->di_btop = btgt; + hdp = au_hdentry(dinfo, btgt); + h_dentry = hdp->hd_dentry; + hdp->hd_dentry = hi_wh; + err = au_reopen_nondir(file); + hdp->hd_dentry = h_dentry; + dinfo->di_btop = btop; + + return err; +} + +static int au_ready_to_write_wh(struct file *file, loff_t len, + aufs_bindex_t bcpup, struct au_pin *pin) +{ + int err; + struct inode *inode, *h_inode; + struct dentry *h_dentry, *hi_wh; + struct au_cp_generic cpg = { + .dentry = file->f_path.dentry, + .bdst = bcpup, + .bsrc = -1, + .len = len, + .pin = pin + }; + + au_update_dbtop(cpg.dentry); + inode = d_inode(cpg.dentry); + h_inode = NULL; + if (au_dbtop(cpg.dentry) <= bcpup + && au_dbbot(cpg.dentry) >= bcpup) { + h_dentry = au_h_dptr(cpg.dentry, bcpup); + if (h_dentry && d_is_positive(h_dentry)) + h_inode = d_inode(h_dentry); + } + hi_wh = au_hi_wh(inode, bcpup); + if (!hi_wh && !h_inode) + err = au_sio_cpup_wh(&cpg, file); + else + /* already copied-up after unlink */ + err = au_reopen_wh(file, bcpup, hi_wh); + + if (!err + && (inode->i_nlink > 1 + || (inode->i_state & I_LINKABLE)) + && au_opt_test(au_mntflags(cpg.dentry->d_sb), PLINK)) + au_plink_append(inode, bcpup, au_h_dptr(cpg.dentry, bcpup)); + + return err; +} + +/* + * prepare the @file for writing. + */ +int au_ready_to_write(struct file *file, loff_t len, struct au_pin *pin) +{ + int err; + aufs_bindex_t dbtop; + struct dentry *parent; + struct inode *inode; + struct super_block *sb; + struct file *h_file; + struct au_cp_generic cpg = { + .dentry = file->f_path.dentry, + .bdst = -1, + .bsrc = -1, + .len = len, + .pin = pin, + .flags = AuCpup_DTIME + }; + + sb = cpg.dentry->d_sb; + inode = d_inode(cpg.dentry); + cpg.bsrc = au_fbtop(file); + err = au_test_ro(sb, cpg.bsrc, inode); + if (!err && (au_hf_top(file)->f_mode & FMODE_WRITE)) { + err = au_pin(pin, cpg.dentry, cpg.bsrc, AuOpt_UDBA_NONE, + /*flags*/0); + goto out; + } + + /* need to cpup or reopen */ + parent = dget_parent(cpg.dentry); + di_write_lock_parent(parent); + err = AuWbrCopyup(au_sbi(sb), cpg.dentry); + cpg.bdst = err; + if (unlikely(err < 0)) + goto out_dgrade; + err = 0; + + if (!d_unhashed(cpg.dentry) && !au_h_dptr(parent, cpg.bdst)) { + err = au_cpup_dirs(cpg.dentry, cpg.bdst); + if (unlikely(err)) + goto out_dgrade; + } + + err = au_pin(pin, cpg.dentry, cpg.bdst, AuOpt_UDBA_NONE, + AuPin_DI_LOCKED | AuPin_MNT_WRITE); + if (unlikely(err)) + goto out_dgrade; + + dbtop = au_dbtop(cpg.dentry); + if (dbtop <= cpg.bdst) + cpg.bsrc = cpg.bdst; + + if (dbtop <= cpg.bdst /* just reopen */ + || !d_unhashed(cpg.dentry) /* copyup and reopen */ + ) { + h_file = au_h_open_pre(cpg.dentry, cpg.bsrc, /*force_wr*/0); + if (IS_ERR(h_file)) + err = PTR_ERR(h_file); + else { + di_downgrade_lock(parent, AuLock_IR); + if (dbtop > cpg.bdst) + err = au_sio_cpup_simple(&cpg); + if (!err) + err = au_reopen_nondir(file); + au_h_open_post(cpg.dentry, cpg.bsrc, h_file); + } + } else { /* copyup as wh and reopen */ + /* + * since writable hfsplus branch is not supported, + * h_open_pre/post() are unnecessary. + */ + err = au_ready_to_write_wh(file, len, cpg.bdst, pin); + di_downgrade_lock(parent, AuLock_IR); + } + + if (!err) { + au_pin_set_parent_lflag(pin, /*lflag*/0); + goto out_dput; /* success */ + } + au_unpin(pin); + goto out_unlock; + +out_dgrade: + di_downgrade_lock(parent, AuLock_IR); +out_unlock: + di_read_unlock(parent, AuLock_IR); +out_dput: + dput(parent); +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +int au_do_flush(struct file *file, fl_owner_t id, + int (*flush)(struct file *file, fl_owner_t id)) +{ + int err; + struct super_block *sb; + struct inode *inode; + + inode = file_inode(file); + sb = inode->i_sb; + si_noflush_read_lock(sb); + fi_read_lock(file); + ii_read_lock_child(inode); + + err = flush(file, id); + au_cpup_attr_timesizes(inode); + + ii_read_unlock(inode); + fi_read_unlock(file); + si_read_unlock(sb); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int au_file_refresh_by_inode(struct file *file, int *need_reopen) +{ + int err; + struct au_pin pin; + struct au_finfo *finfo; + struct dentry *parent, *hi_wh; + struct inode *inode; + struct super_block *sb; + struct au_cp_generic cpg = { + .dentry = file->f_path.dentry, + .bdst = -1, + .bsrc = -1, + .len = -1, + .pin = &pin, + .flags = AuCpup_DTIME + }; + + FiMustWriteLock(file); + + err = 0; + finfo = au_fi(file); + sb = cpg.dentry->d_sb; + inode = d_inode(cpg.dentry); + cpg.bdst = au_ibtop(inode); + if (cpg.bdst == finfo->fi_btop || IS_ROOT(cpg.dentry)) + goto out; + + parent = dget_parent(cpg.dentry); + if (au_test_ro(sb, cpg.bdst, inode)) { + di_read_lock_parent(parent, !AuLock_IR); + err = AuWbrCopyup(au_sbi(sb), cpg.dentry); + cpg.bdst = err; + di_read_unlock(parent, !AuLock_IR); + if (unlikely(err < 0)) + goto out_parent; + err = 0; + } + + di_read_lock_parent(parent, AuLock_IR); + hi_wh = au_hi_wh(inode, cpg.bdst); + if (!S_ISDIR(inode->i_mode) + && au_opt_test(au_mntflags(sb), PLINK) + && au_plink_test(inode) + && !d_unhashed(cpg.dentry) + && cpg.bdst < au_dbtop(cpg.dentry)) { + err = au_test_and_cpup_dirs(cpg.dentry, cpg.bdst); + if (unlikely(err)) + goto out_unlock; + + /* always superio. */ + err = au_pin(&pin, cpg.dentry, cpg.bdst, AuOpt_UDBA_NONE, + AuPin_DI_LOCKED | AuPin_MNT_WRITE); + if (!err) { + err = au_sio_cpup_simple(&cpg); + au_unpin(&pin); + } + } else if (hi_wh) { + /* already copied-up after unlink */ + err = au_reopen_wh(file, cpg.bdst, hi_wh); + *need_reopen = 0; + } + +out_unlock: + di_read_unlock(parent, AuLock_IR); +out_parent: + dput(parent); +out: + return err; +} + +static void au_do_refresh_dir(struct file *file) +{ + aufs_bindex_t bindex, bbot, new_bindex, brid; + struct au_hfile *p, tmp, *q; + struct au_finfo *finfo; + struct super_block *sb; + struct au_fidir *fidir; + + FiMustWriteLock(file); + + sb = file->f_path.dentry->d_sb; + finfo = au_fi(file); + fidir = finfo->fi_hdir; + AuDebugOn(!fidir); + p = fidir->fd_hfile + finfo->fi_btop; + brid = p->hf_br->br_id; + bbot = fidir->fd_bbot; + for (bindex = finfo->fi_btop; bindex <= bbot; bindex++, p++) { + if (!p->hf_file) + continue; + + new_bindex = au_br_index(sb, p->hf_br->br_id); + if (new_bindex == bindex) + continue; + if (new_bindex < 0) { + au_set_h_fptr(file, bindex, NULL); + continue; + } + + /* swap two lower inode, and loop again */ + q = fidir->fd_hfile + new_bindex; + tmp = *q; + *q = *p; + *p = tmp; + if (tmp.hf_file) { + bindex--; + p--; + } + } + + p = fidir->fd_hfile; + if (!au_test_mmapped(file) && !d_unlinked(file->f_path.dentry)) { + bbot = au_sbbot(sb); + for (finfo->fi_btop = 0; finfo->fi_btop <= bbot; + finfo->fi_btop++, p++) + if (p->hf_file) { + if (file_inode(p->hf_file)) + break; + au_hfput(p, /*execed*/0); + } + } else { + bbot = au_br_index(sb, brid); + for (finfo->fi_btop = 0; finfo->fi_btop < bbot; + finfo->fi_btop++, p++) + if (p->hf_file) + au_hfput(p, /*execed*/0); + bbot = au_sbbot(sb); + } + + p = fidir->fd_hfile + bbot; + for (fidir->fd_bbot = bbot; fidir->fd_bbot >= finfo->fi_btop; + fidir->fd_bbot--, p--) + if (p->hf_file) { + if (file_inode(p->hf_file)) + break; + au_hfput(p, /*execed*/0); + } + AuDebugOn(fidir->fd_bbot < finfo->fi_btop); +} + +/* + * after branch manipulating, refresh the file. + */ +static int refresh_file(struct file *file, int (*reopen)(struct file *file)) +{ + int err, need_reopen, nbr; + aufs_bindex_t bbot, bindex; + struct dentry *dentry; + struct super_block *sb; + struct au_finfo *finfo; + struct au_hfile *hfile; + + dentry = file->f_path.dentry; + sb = dentry->d_sb; + nbr = au_sbbot(sb) + 1; + finfo = au_fi(file); + if (!finfo->fi_hdir) { + hfile = &finfo->fi_htop; + AuDebugOn(!hfile->hf_file); + bindex = au_br_index(sb, hfile->hf_br->br_id); + AuDebugOn(bindex < 0); + if (bindex != finfo->fi_btop) + au_set_fbtop(file, bindex); + } else { + err = au_fidir_realloc(finfo, nbr, /*may_shrink*/0); + if (unlikely(err)) + goto out; + au_do_refresh_dir(file); + } + + err = 0; + need_reopen = 1; + if (!au_test_mmapped(file)) + err = au_file_refresh_by_inode(file, &need_reopen); + if (finfo->fi_hdir) + /* harmless if err */ + au_fidir_realloc(finfo, nbr, /*may_shrink*/1); + if (!err && need_reopen && !d_unlinked(dentry)) + err = reopen(file); + if (!err) { + au_update_figen(file); + goto out; /* success */ + } + + /* error, close all lower files */ + if (finfo->fi_hdir) { + bbot = au_fbbot_dir(file); + for (bindex = au_fbtop(file); bindex <= bbot; bindex++) + au_set_h_fptr(file, bindex, NULL); + } + +out: + return err; +} + +/* common function to regular file and dir */ +int au_reval_and_lock_fdi(struct file *file, int (*reopen)(struct file *file), + int wlock, unsigned int fi_lsc) +{ + int err; + unsigned int sigen, figen; + aufs_bindex_t btop; + unsigned char pseudo_link; + struct dentry *dentry; + struct inode *inode; + + err = 0; + dentry = file->f_path.dentry; + inode = d_inode(dentry); + sigen = au_sigen(dentry->d_sb); + fi_write_lock_nested(file, fi_lsc); + figen = au_figen(file); + if (!fi_lsc) + di_write_lock_child(dentry); + else + di_write_lock_child2(dentry); + btop = au_dbtop(dentry); + pseudo_link = (btop != au_ibtop(inode)); + if (sigen == figen && !pseudo_link && au_fbtop(file) == btop) { + if (!wlock) { + di_downgrade_lock(dentry, AuLock_IR); + fi_downgrade_lock(file); + } + goto out; /* success */ + } + + AuDbg("sigen %d, figen %d\n", sigen, figen); + if (au_digen_test(dentry, sigen)) { + err = au_reval_dpath(dentry, sigen); + AuDebugOn(!err && au_digen_test(dentry, sigen)); + } + + if (!err) + err = refresh_file(file, reopen); + if (!err) { + if (!wlock) { + di_downgrade_lock(dentry, AuLock_IR); + fi_downgrade_lock(file); + } + } else { + di_write_unlock(dentry); + fi_write_unlock(file); + } + +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* cf. aufs_nopage() */ +/* for madvise(2) */ +static int aufs_readpage(struct file *file __maybe_unused, struct page *page) +{ + unlock_page(page); + return 0; +} + +/* it will never be called, but necessary to support O_DIRECT */ +static ssize_t aufs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) +{ BUG(); return 0; } + +/* they will never be called. */ +#ifdef CONFIG_AUFS_DEBUG +static int aufs_write_begin(struct file *file, struct address_space *mapping, + loff_t pos, unsigned len, unsigned flags, + struct page **pagep, void **fsdata) +{ AuUnsupport(); return 0; } +static int aufs_write_end(struct file *file, struct address_space *mapping, + loff_t pos, unsigned len, unsigned copied, + struct page *page, void *fsdata) +{ AuUnsupport(); return 0; } +static int aufs_writepage(struct page *page, struct writeback_control *wbc) +{ AuUnsupport(); return 0; } + +static int aufs_set_page_dirty(struct page *page) +{ AuUnsupport(); return 0; } +static void aufs_invalidatepage(struct page *page, unsigned int offset, + unsigned int length) +{ AuUnsupport(); } +static int aufs_releasepage(struct page *page, gfp_t gfp) +{ AuUnsupport(); return 0; } +#if 0 /* called by memory compaction regardless file */ +static int aufs_migratepage(struct address_space *mapping, struct page *newpage, + struct page *page, enum migrate_mode mode) +{ AuUnsupport(); return 0; } +#endif +static bool aufs_isolate_page(struct page *page, isolate_mode_t mode) +{ AuUnsupport(); return true; } +static void aufs_putback_page(struct page *page) +{ AuUnsupport(); } +static int aufs_launder_page(struct page *page) +{ AuUnsupport(); return 0; } +static int aufs_is_partially_uptodate(struct page *page, + unsigned long from, + unsigned long count) +{ AuUnsupport(); return 0; } +static void aufs_is_dirty_writeback(struct page *page, bool *dirty, + bool *writeback) +{ AuUnsupport(); } +static int aufs_error_remove_page(struct address_space *mapping, + struct page *page) +{ AuUnsupport(); return 0; } +static int aufs_swap_activate(struct swap_info_struct *sis, struct file *file, + sector_t *span) +{ AuUnsupport(); return 0; } +static void aufs_swap_deactivate(struct file *file) +{ AuUnsupport(); } +#endif /* CONFIG_AUFS_DEBUG */ + +const struct address_space_operations aufs_aop = { + .readpage = aufs_readpage, + .direct_IO = aufs_direct_IO, +#ifdef CONFIG_AUFS_DEBUG + .writepage = aufs_writepage, + /* no writepages, because of writepage */ + .set_page_dirty = aufs_set_page_dirty, + /* no readpages, because of readpage */ + .write_begin = aufs_write_begin, + .write_end = aufs_write_end, + /* no bmap, no block device */ + .invalidatepage = aufs_invalidatepage, + .releasepage = aufs_releasepage, + /* is fallback_migrate_page ok? */ + /* .migratepage = aufs_migratepage, */ + .isolate_page = aufs_isolate_page, + .putback_page = aufs_putback_page, + .launder_page = aufs_launder_page, + .is_partially_uptodate = aufs_is_partially_uptodate, + .is_dirty_writeback = aufs_is_dirty_writeback, + .error_remove_page = aufs_error_remove_page, + .swap_activate = aufs_swap_activate, + .swap_deactivate = aufs_swap_deactivate +#endif /* CONFIG_AUFS_DEBUG */ +}; diff --git a/fs/aufs/file.h b/fs/aufs/file.h new file mode 100644 index 00000000000..11bc65480fb --- /dev/null +++ b/fs/aufs/file.h @@ -0,0 +1,341 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * file operations + */ + +#ifndef __AUFS_FILE_H__ +#define __AUFS_FILE_H__ + +#ifdef __KERNEL__ + +#include +#include +#include +#include +#include "rwsem.h" + +struct au_branch; +struct au_hfile { + struct file *hf_file; + struct au_branch *hf_br; +}; + +struct au_vdir; +struct au_fidir { + aufs_bindex_t fd_bbot; + aufs_bindex_t fd_nent; + struct au_vdir *fd_vdir_cache; + struct au_hfile fd_hfile[]; +}; + +static inline int au_fidir_sz(int nent) +{ + AuDebugOn(nent < 0); + return sizeof(struct au_fidir) + sizeof(struct au_hfile) * nent; +} + +struct au_finfo { + atomic_t fi_generation; + + struct au_rwsem fi_rwsem; + aufs_bindex_t fi_btop; + + /* do not union them */ + struct { /* for non-dir */ + struct au_hfile fi_htop; + atomic_t fi_mmapped; + }; + struct au_fidir *fi_hdir; /* for dir only */ + + struct hlist_bl_node fi_hlist; + struct file *fi_file; /* very ugly */ +} ____cacheline_aligned_in_smp; + +/* ---------------------------------------------------------------------- */ + +/* file.c */ +extern const struct address_space_operations aufs_aop; +unsigned int au_file_roflags(unsigned int flags); +struct file *au_h_open(struct dentry *dentry, aufs_bindex_t bindex, int flags, + struct file *file, int force_wr); +struct au_do_open_args { + int aopen; + int (*open)(struct file *file, int flags, + struct file *h_file); + struct au_fidir *fidir; + struct file *h_file; +}; +int au_do_open(struct file *file, struct au_do_open_args *args); +int au_reopen_nondir(struct file *file); +struct au_pin; +int au_ready_to_write(struct file *file, loff_t len, struct au_pin *pin); +int au_reval_and_lock_fdi(struct file *file, int (*reopen)(struct file *file), + int wlock, unsigned int fi_lsc); +int au_do_flush(struct file *file, fl_owner_t id, + int (*flush)(struct file *file, fl_owner_t id)); + +/* poll.c */ +#ifdef CONFIG_AUFS_POLL +__poll_t aufs_poll(struct file *file, struct poll_table_struct *pt); +#endif + +#ifdef CONFIG_AUFS_BR_HFSPLUS +/* hfsplus.c */ +struct file *au_h_open_pre(struct dentry *dentry, aufs_bindex_t bindex, + int force_wr); +void au_h_open_post(struct dentry *dentry, aufs_bindex_t bindex, + struct file *h_file); +#else +AuStub(struct file *, au_h_open_pre, return NULL, struct dentry *dentry, + aufs_bindex_t bindex, int force_wr) +AuStubVoid(au_h_open_post, struct dentry *dentry, aufs_bindex_t bindex, + struct file *h_file); +#endif + +/* f_op.c */ +extern const struct file_operations aufs_file_fop; +int au_do_open_nondir(struct file *file, int flags, struct file *h_file); +int aufs_release_nondir(struct inode *inode __maybe_unused, struct file *file); +struct file *au_read_pre(struct file *file, int keep_fi, unsigned int lsc); + +/* finfo.c */ +void au_hfput(struct au_hfile *hf, int execed); +void au_set_h_fptr(struct file *file, aufs_bindex_t bindex, + struct file *h_file); + +void au_update_figen(struct file *file); +struct au_fidir *au_fidir_alloc(struct super_block *sb); +int au_fidir_realloc(struct au_finfo *finfo, int nbr, int may_shrink); + +void au_fi_init_once(void *_fi); +void au_finfo_fin(struct file *file); +int au_finfo_init(struct file *file, struct au_fidir *fidir); + +/* ioctl.c */ +long aufs_ioctl_nondir(struct file *file, unsigned int cmd, unsigned long arg); +#ifdef CONFIG_COMPAT +long aufs_compat_ioctl_dir(struct file *file, unsigned int cmd, + unsigned long arg); +long aufs_compat_ioctl_nondir(struct file *file, unsigned int cmd, + unsigned long arg); +#endif + +/* ---------------------------------------------------------------------- */ + +static inline struct au_finfo *au_fi(struct file *file) +{ + return file->private_data; +} + +/* ---------------------------------------------------------------------- */ + +#define fi_read_lock(f) au_rw_read_lock(&au_fi(f)->fi_rwsem) +#define fi_write_lock(f) au_rw_write_lock(&au_fi(f)->fi_rwsem) +#define fi_read_trylock(f) au_rw_read_trylock(&au_fi(f)->fi_rwsem) +#define fi_write_trylock(f) au_rw_write_trylock(&au_fi(f)->fi_rwsem) +/* +#define fi_read_trylock_nested(f) \ + au_rw_read_trylock_nested(&au_fi(f)->fi_rwsem) +#define fi_write_trylock_nested(f) \ + au_rw_write_trylock_nested(&au_fi(f)->fi_rwsem) +*/ + +#define fi_read_unlock(f) au_rw_read_unlock(&au_fi(f)->fi_rwsem) +#define fi_write_unlock(f) au_rw_write_unlock(&au_fi(f)->fi_rwsem) +#define fi_downgrade_lock(f) au_rw_dgrade_lock(&au_fi(f)->fi_rwsem) + +/* lock subclass for finfo */ +enum { + AuLsc_FI_1, + AuLsc_FI_2 +}; + +static inline void fi_read_lock_nested(struct file *f, unsigned int lsc) +{ + au_rw_read_lock_nested(&au_fi(f)->fi_rwsem, lsc); +} + +static inline void fi_write_lock_nested(struct file *f, unsigned int lsc) +{ + au_rw_write_lock_nested(&au_fi(f)->fi_rwsem, lsc); +} + +/* + * fi_read_lock_1, fi_write_lock_1, + * fi_read_lock_2, fi_write_lock_2 + */ +#define AuReadLockFunc(name) \ +static inline void fi_read_lock_##name(struct file *f) \ +{ fi_read_lock_nested(f, AuLsc_FI_##name); } + +#define AuWriteLockFunc(name) \ +static inline void fi_write_lock_##name(struct file *f) \ +{ fi_write_lock_nested(f, AuLsc_FI_##name); } + +#define AuRWLockFuncs(name) \ + AuReadLockFunc(name) \ + AuWriteLockFunc(name) + +AuRWLockFuncs(1); +AuRWLockFuncs(2); + +#undef AuReadLockFunc +#undef AuWriteLockFunc +#undef AuRWLockFuncs + +#define FiMustNoWaiters(f) AuRwMustNoWaiters(&au_fi(f)->fi_rwsem) +#define FiMustAnyLock(f) AuRwMustAnyLock(&au_fi(f)->fi_rwsem) +#define FiMustWriteLock(f) AuRwMustWriteLock(&au_fi(f)->fi_rwsem) + +/* ---------------------------------------------------------------------- */ + +/* todo: hard/soft set? */ +static inline aufs_bindex_t au_fbtop(struct file *file) +{ + FiMustAnyLock(file); + return au_fi(file)->fi_btop; +} + +static inline aufs_bindex_t au_fbbot_dir(struct file *file) +{ + FiMustAnyLock(file); + AuDebugOn(!au_fi(file)->fi_hdir); + return au_fi(file)->fi_hdir->fd_bbot; +} + +static inline struct au_vdir *au_fvdir_cache(struct file *file) +{ + FiMustAnyLock(file); + AuDebugOn(!au_fi(file)->fi_hdir); + return au_fi(file)->fi_hdir->fd_vdir_cache; +} + +static inline void au_set_fbtop(struct file *file, aufs_bindex_t bindex) +{ + FiMustWriteLock(file); + au_fi(file)->fi_btop = bindex; +} + +static inline void au_set_fbbot_dir(struct file *file, aufs_bindex_t bindex) +{ + FiMustWriteLock(file); + AuDebugOn(!au_fi(file)->fi_hdir); + au_fi(file)->fi_hdir->fd_bbot = bindex; +} + +static inline void au_set_fvdir_cache(struct file *file, + struct au_vdir *vdir_cache) +{ + FiMustWriteLock(file); + AuDebugOn(!au_fi(file)->fi_hdir); + au_fi(file)->fi_hdir->fd_vdir_cache = vdir_cache; +} + +static inline struct file *au_hf_top(struct file *file) +{ + FiMustAnyLock(file); + AuDebugOn(au_fi(file)->fi_hdir); + return au_fi(file)->fi_htop.hf_file; +} + +static inline struct file *au_hf_dir(struct file *file, aufs_bindex_t bindex) +{ + FiMustAnyLock(file); + AuDebugOn(!au_fi(file)->fi_hdir); + return au_fi(file)->fi_hdir->fd_hfile[0 + bindex].hf_file; +} + +/* todo: memory barrier? */ +static inline unsigned int au_figen(struct file *f) +{ + return atomic_read(&au_fi(f)->fi_generation); +} + +static inline void au_set_mmapped(struct file *f) +{ + if (atomic_inc_return(&au_fi(f)->fi_mmapped)) + return; + pr_warn("fi_mmapped wrapped around\n"); + while (!atomic_inc_return(&au_fi(f)->fi_mmapped)) + ; +} + +static inline void au_unset_mmapped(struct file *f) +{ + atomic_dec(&au_fi(f)->fi_mmapped); +} + +static inline int au_test_mmapped(struct file *f) +{ + return atomic_read(&au_fi(f)->fi_mmapped); +} + +/* customize vma->vm_file */ + +static inline void au_do_vm_file_reset(struct vm_area_struct *vma, + struct file *file) +{ + struct file *f; + + f = vma->vm_file; + get_file(file); + vma->vm_file = file; + fput(f); +} + +#ifdef CONFIG_MMU +#define AuDbgVmRegion(file, vma) do {} while (0) + +static inline void au_vm_file_reset(struct vm_area_struct *vma, + struct file *file) +{ + au_do_vm_file_reset(vma, file); +} +#else +#define AuDbgVmRegion(file, vma) \ + AuDebugOn((vma)->vm_region && (vma)->vm_region->vm_file != (file)) + +static inline void au_vm_file_reset(struct vm_area_struct *vma, + struct file *file) +{ + struct file *f; + + au_do_vm_file_reset(vma, file); + f = vma->vm_region->vm_file; + get_file(file); + vma->vm_region->vm_file = file; + fput(f); +} +#endif /* CONFIG_MMU */ + +/* handle vma->vm_prfile */ +static inline void au_vm_prfile_set(struct vm_area_struct *vma, + struct file *file) +{ + get_file(file); + vma->vm_prfile = file; +#ifndef CONFIG_MMU + get_file(file); + vma->vm_region->vm_prfile = file; +#endif +} + +#endif /* __KERNEL__ */ +#endif /* __AUFS_FILE_H__ */ diff --git a/fs/aufs/finfo.c b/fs/aufs/finfo.c new file mode 100644 index 00000000000..513d48222ba --- /dev/null +++ b/fs/aufs/finfo.c @@ -0,0 +1,149 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * file private data + */ + +#include "aufs.h" + +void au_hfput(struct au_hfile *hf, int execed) +{ + if (execed) + allow_write_access(hf->hf_file); + fput(hf->hf_file); + hf->hf_file = NULL; + au_br_put(hf->hf_br); + hf->hf_br = NULL; +} + +void au_set_h_fptr(struct file *file, aufs_bindex_t bindex, struct file *val) +{ + struct au_finfo *finfo = au_fi(file); + struct au_hfile *hf; + struct au_fidir *fidir; + + fidir = finfo->fi_hdir; + if (!fidir) { + AuDebugOn(finfo->fi_btop != bindex); + hf = &finfo->fi_htop; + } else + hf = fidir->fd_hfile + bindex; + + if (hf && hf->hf_file) + au_hfput(hf, vfsub_file_execed(file)); + if (val) { + FiMustWriteLock(file); + AuDebugOn(IS_ERR_OR_NULL(file->f_path.dentry)); + hf->hf_file = val; + hf->hf_br = au_sbr(file->f_path.dentry->d_sb, bindex); + } +} + +void au_update_figen(struct file *file) +{ + atomic_set(&au_fi(file)->fi_generation, au_digen(file->f_path.dentry)); + /* smp_mb(); */ /* atomic_set */ +} + +/* ---------------------------------------------------------------------- */ + +struct au_fidir *au_fidir_alloc(struct super_block *sb) +{ + struct au_fidir *fidir; + int nbr; + + nbr = au_sbbot(sb) + 1; + if (nbr < 2) + nbr = 2; /* initial allocate for 2 branches */ + fidir = kzalloc(au_fidir_sz(nbr), GFP_NOFS); + if (fidir) { + fidir->fd_bbot = -1; + fidir->fd_nent = nbr; + } + + return fidir; +} + +int au_fidir_realloc(struct au_finfo *finfo, int nbr, int may_shrink) +{ + int err; + struct au_fidir *fidir, *p; + + AuRwMustWriteLock(&finfo->fi_rwsem); + fidir = finfo->fi_hdir; + AuDebugOn(!fidir); + + err = -ENOMEM; + p = au_kzrealloc(fidir, au_fidir_sz(fidir->fd_nent), au_fidir_sz(nbr), + GFP_NOFS, may_shrink); + if (p) { + p->fd_nent = nbr; + finfo->fi_hdir = p; + err = 0; + } + + return err; +} + +/* ---------------------------------------------------------------------- */ + +void au_finfo_fin(struct file *file) +{ + struct au_finfo *finfo; + + au_nfiles_dec(file->f_path.dentry->d_sb); + + finfo = au_fi(file); + AuDebugOn(finfo->fi_hdir); + AuRwDestroy(&finfo->fi_rwsem); + au_cache_free_finfo(finfo); +} + +void au_fi_init_once(void *_finfo) +{ + struct au_finfo *finfo = _finfo; + + au_rw_init(&finfo->fi_rwsem); +} + +int au_finfo_init(struct file *file, struct au_fidir *fidir) +{ + int err; + struct au_finfo *finfo; + struct dentry *dentry; + + err = -ENOMEM; + dentry = file->f_path.dentry; + finfo = au_cache_alloc_finfo(); + if (unlikely(!finfo)) + goto out; + + err = 0; + au_nfiles_inc(dentry->d_sb); + au_rw_write_lock(&finfo->fi_rwsem); + finfo->fi_btop = -1; + finfo->fi_hdir = fidir; + atomic_set(&finfo->fi_generation, au_digen(dentry)); + /* smp_mb(); */ /* atomic_set */ + + file->private_data = finfo; + +out: + return err; +} diff --git a/fs/aufs/fstype.h b/fs/aufs/fstype.h new file mode 100644 index 00000000000..4e295869be1 --- /dev/null +++ b/fs/aufs/fstype.h @@ -0,0 +1,401 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * judging filesystem type + */ + +#ifndef __AUFS_FSTYPE_H__ +#define __AUFS_FSTYPE_H__ + +#ifdef __KERNEL__ + +#include +#include +#include +#include + +static inline int au_test_aufs(struct super_block *sb) +{ + return sb->s_magic == AUFS_SUPER_MAGIC; +} + +static inline const char *au_sbtype(struct super_block *sb) +{ + return sb->s_type->name; +} + +static inline int au_test_iso9660(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_ISO9660_FS) + return sb->s_magic == ISOFS_SUPER_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_romfs(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_ROMFS_FS) + return sb->s_magic == ROMFS_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_cramfs(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_CRAMFS) + return sb->s_magic == CRAMFS_MAGIC; +#endif + return 0; +} + +static inline int au_test_nfs(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_NFS_FS) + return sb->s_magic == NFS_SUPER_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_fuse(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_FUSE_FS) + return sb->s_magic == FUSE_SUPER_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_xfs(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_XFS_FS) + return sb->s_magic == XFS_SB_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_tmpfs(struct super_block *sb __maybe_unused) +{ +#ifdef CONFIG_TMPFS + return sb->s_magic == TMPFS_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_ecryptfs(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_ECRYPT_FS) + return !strcmp(au_sbtype(sb), "ecryptfs"); +#else + return 0; +#endif +} + +static inline int au_test_ramfs(struct super_block *sb) +{ + return sb->s_magic == RAMFS_MAGIC; +} + +static inline int au_test_ubifs(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_UBIFS_FS) + return sb->s_magic == UBIFS_SUPER_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_procfs(struct super_block *sb __maybe_unused) +{ +#ifdef CONFIG_PROC_FS + return sb->s_magic == PROC_SUPER_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_sysfs(struct super_block *sb __maybe_unused) +{ +#ifdef CONFIG_SYSFS + return sb->s_magic == SYSFS_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_configfs(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_CONFIGFS_FS) + return sb->s_magic == CONFIGFS_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_minix(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_MINIX_FS) + return sb->s_magic == MINIX3_SUPER_MAGIC + || sb->s_magic == MINIX2_SUPER_MAGIC + || sb->s_magic == MINIX2_SUPER_MAGIC2 + || sb->s_magic == MINIX_SUPER_MAGIC + || sb->s_magic == MINIX_SUPER_MAGIC2; +#else + return 0; +#endif +} + +static inline int au_test_fat(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_FAT_FS) + return sb->s_magic == MSDOS_SUPER_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_msdos(struct super_block *sb) +{ + return au_test_fat(sb); +} + +static inline int au_test_vfat(struct super_block *sb) +{ + return au_test_fat(sb); +} + +static inline int au_test_securityfs(struct super_block *sb __maybe_unused) +{ +#ifdef CONFIG_SECURITYFS + return sb->s_magic == SECURITYFS_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_squashfs(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_SQUASHFS) + return sb->s_magic == SQUASHFS_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_btrfs(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_BTRFS_FS) + return sb->s_magic == BTRFS_SUPER_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_xenfs(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_XENFS) + return sb->s_magic == XENFS_SUPER_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_debugfs(struct super_block *sb __maybe_unused) +{ +#ifdef CONFIG_DEBUG_FS + return sb->s_magic == DEBUGFS_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_nilfs(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_NILFS) + return sb->s_magic == NILFS_SUPER_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_hfsplus(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_HFSPLUS_FS) + return sb->s_magic == HFSPLUS_SUPER_MAGIC; +#else + return 0; +#endif +} + +/* ---------------------------------------------------------------------- */ +/* + * they can't be an aufs branch. + */ +static inline int au_test_fs_unsuppoted(struct super_block *sb) +{ + return +#ifndef CONFIG_AUFS_BR_RAMFS + au_test_ramfs(sb) || +#endif + au_test_procfs(sb) + || au_test_sysfs(sb) + || au_test_configfs(sb) + || au_test_debugfs(sb) + || au_test_securityfs(sb) + || au_test_xenfs(sb) + || au_test_ecryptfs(sb) + /* || !strcmp(au_sbtype(sb), "unionfs") */ + || au_test_aufs(sb); /* will be supported in next version */ +} + +static inline int au_test_fs_remote(struct super_block *sb) +{ + return !au_test_tmpfs(sb) +#ifdef CONFIG_AUFS_BR_RAMFS + && !au_test_ramfs(sb) +#endif + && !(sb->s_type->fs_flags & FS_REQUIRES_DEV); +} + +/* ---------------------------------------------------------------------- */ + +/* + * Note: these functions (below) are created after reading ->getattr() in all + * filesystems under linux/fs. it means we have to do so in every update... + */ + +/* + * some filesystems require getattr to refresh the inode attributes before + * referencing. + * in most cases, we can rely on the inode attribute in NFS (or every remote fs) + * and leave the work for d_revalidate() + */ +static inline int au_test_fs_refresh_iattr(struct super_block *sb) +{ + return au_test_nfs(sb) + || au_test_fuse(sb) + /* || au_test_btrfs(sb) */ /* untested */ + ; +} + +/* + * filesystems which don't maintain i_size or i_blocks. + */ +static inline int au_test_fs_bad_iattr_size(struct super_block *sb) +{ + return au_test_xfs(sb) + || au_test_btrfs(sb) + || au_test_ubifs(sb) + || au_test_hfsplus(sb) /* maintained, but incorrect */ + /* || au_test_minix(sb) */ /* untested */ + ; +} + +/* + * filesystems which don't store the correct value in some of their inode + * attributes. + */ +static inline int au_test_fs_bad_iattr(struct super_block *sb) +{ + return au_test_fs_bad_iattr_size(sb) + || au_test_fat(sb) + || au_test_msdos(sb) + || au_test_vfat(sb); +} + +/* they don't check i_nlink in link(2) */ +static inline int au_test_fs_no_limit_nlink(struct super_block *sb) +{ + return au_test_tmpfs(sb) +#ifdef CONFIG_AUFS_BR_RAMFS + || au_test_ramfs(sb) +#endif + || au_test_ubifs(sb) + || au_test_hfsplus(sb); +} + +/* + * filesystems which sets S_NOATIME and S_NOCMTIME. + */ +static inline int au_test_fs_notime(struct super_block *sb) +{ + return au_test_nfs(sb) + || au_test_fuse(sb) + || au_test_ubifs(sb) + ; +} + +/* temporary support for i#1 in cramfs */ +static inline int au_test_fs_unique_ino(struct inode *inode) +{ + if (au_test_cramfs(inode->i_sb)) + return inode->i_ino != 1; + return 1; +} + +/* ---------------------------------------------------------------------- */ + +/* + * the filesystem where the xino files placed must support i/o after unlink and + * maintain i_size and i_blocks. + */ +static inline int au_test_fs_bad_xino(struct super_block *sb) +{ + return au_test_fs_remote(sb) + || au_test_fs_bad_iattr_size(sb) + /* don't want unnecessary work for xino */ + || au_test_aufs(sb) + || au_test_ecryptfs(sb) + || au_test_nilfs(sb); +} + +static inline int au_test_fs_trunc_xino(struct super_block *sb) +{ + return au_test_tmpfs(sb) + || au_test_ramfs(sb); +} + +/* + * test if the @sb is real-readonly. + */ +static inline int au_test_fs_rr(struct super_block *sb) +{ + return au_test_squashfs(sb) + || au_test_iso9660(sb) + || au_test_cramfs(sb) + || au_test_romfs(sb); +} + +/* + * test if the @inode is nfs with 'noacl' option + * NFS always sets SB_POSIXACL regardless its mount option 'noacl.' + */ +static inline int au_test_nfs_noacl(struct inode *inode) +{ + return au_test_nfs(inode->i_sb) + /* && IS_POSIXACL(inode) */ + && !nfs_server_capable(inode, NFS_CAP_ACLS); +} + +#endif /* __KERNEL__ */ +#endif /* __AUFS_FSTYPE_H__ */ diff --git a/fs/aufs/hbl.h b/fs/aufs/hbl.h new file mode 100644 index 00000000000..265d7ab616e --- /dev/null +++ b/fs/aufs/hbl.h @@ -0,0 +1,65 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2017-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * helpers for hlist_bl.h + */ + +#ifndef __AUFS_HBL_H__ +#define __AUFS_HBL_H__ + +#ifdef __KERNEL__ + +#include + +static inline void au_hbl_add(struct hlist_bl_node *node, + struct hlist_bl_head *hbl) +{ + hlist_bl_lock(hbl); + hlist_bl_add_head(node, hbl); + hlist_bl_unlock(hbl); +} + +static inline void au_hbl_del(struct hlist_bl_node *node, + struct hlist_bl_head *hbl) +{ + hlist_bl_lock(hbl); + hlist_bl_del(node); + hlist_bl_unlock(hbl); +} + +#define au_hbl_for_each(pos, head) \ + for (pos = hlist_bl_first(head); \ + pos; \ + pos = pos->next) + +static inline unsigned long au_hbl_count(struct hlist_bl_head *hbl) +{ + unsigned long cnt; + struct hlist_bl_node *pos; + + cnt = 0; + hlist_bl_lock(hbl); + au_hbl_for_each(pos, hbl) + cnt++; + hlist_bl_unlock(hbl); + return cnt; +} + +#endif /* __KERNEL__ */ +#endif /* __AUFS_HBL_H__ */ diff --git a/fs/aufs/hfsnotify.c b/fs/aufs/hfsnotify.c new file mode 100644 index 00000000000..920afbf070b --- /dev/null +++ b/fs/aufs/hfsnotify.c @@ -0,0 +1,290 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * fsnotify for the lower directories + */ + +#include "aufs.h" + +/* FS_IN_IGNORED is unnecessary */ +static const __u32 AuHfsnMask = (FS_MOVED_TO | FS_MOVED_FROM | FS_DELETE + | FS_CREATE | FS_EVENT_ON_CHILD); +static DECLARE_WAIT_QUEUE_HEAD(au_hfsn_wq); +static __cacheline_aligned_in_smp atomic64_t au_hfsn_ifree = ATOMIC64_INIT(0); + +static void au_hfsn_free_mark(struct fsnotify_mark *mark) +{ + struct au_hnotify *hn = container_of(mark, struct au_hnotify, + hn_mark); + /* AuDbg("here\n"); */ + au_cache_free_hnotify(hn); + smp_mb__before_atomic(); /* for atomic64_dec */ + if (atomic64_dec_and_test(&au_hfsn_ifree)) + wake_up(&au_hfsn_wq); +} + +static int au_hfsn_alloc(struct au_hinode *hinode) +{ + int err; + struct au_hnotify *hn; + struct super_block *sb; + struct au_branch *br; + struct fsnotify_mark *mark; + aufs_bindex_t bindex; + + hn = hinode->hi_notify; + sb = hn->hn_aufs_inode->i_sb; + bindex = au_br_index(sb, hinode->hi_id); + br = au_sbr(sb, bindex); + AuDebugOn(!br->br_hfsn); + + mark = &hn->hn_mark; + fsnotify_init_mark(mark, br->br_hfsn->hfsn_group); + mark->mask = AuHfsnMask; + /* + * by udba rename or rmdir, aufs assign a new inode to the known + * h_inode, so specify 1 to allow dups. + */ + lockdep_off(); + err = fsnotify_add_mark(mark, hinode->hi_inode, /*mnt*/NULL, + /*allow_dups*/1); + lockdep_on(); + + return err; +} + +static int au_hfsn_free(struct au_hinode *hinode, struct au_hnotify *hn) +{ + struct fsnotify_mark *mark; + unsigned long long ull; + struct fsnotify_group *group; + + ull = atomic64_inc_return(&au_hfsn_ifree); + BUG_ON(!ull); + + mark = &hn->hn_mark; + spin_lock(&mark->lock); + group = mark->group; + fsnotify_get_group(group); + spin_unlock(&mark->lock); + lockdep_off(); + fsnotify_destroy_mark(mark, group); + fsnotify_put_mark(mark); + fsnotify_put_group(group); + lockdep_on(); + + /* free hn by myself */ + return 0; +} + +/* ---------------------------------------------------------------------- */ + +static void au_hfsn_ctl(struct au_hinode *hinode, int do_set) +{ + struct fsnotify_mark *mark; + + mark = &hinode->hi_notify->hn_mark; + spin_lock(&mark->lock); + if (do_set) { + AuDebugOn(mark->mask & AuHfsnMask); + mark->mask |= AuHfsnMask; + } else { + AuDebugOn(!(mark->mask & AuHfsnMask)); + mark->mask &= ~AuHfsnMask; + } + spin_unlock(&mark->lock); + /* fsnotify_recalc_inode_mask(hinode->hi_inode); */ +} + +/* ---------------------------------------------------------------------- */ + +/* #define AuDbgHnotify */ +#ifdef AuDbgHnotify +static char *au_hfsn_name(u32 mask) +{ +#ifdef CONFIG_AUFS_DEBUG +#define test_ret(flag) \ + do { \ + if (mask & flag) \ + return #flag; \ + } while (0) + test_ret(FS_ACCESS); + test_ret(FS_MODIFY); + test_ret(FS_ATTRIB); + test_ret(FS_CLOSE_WRITE); + test_ret(FS_CLOSE_NOWRITE); + test_ret(FS_OPEN); + test_ret(FS_MOVED_FROM); + test_ret(FS_MOVED_TO); + test_ret(FS_CREATE); + test_ret(FS_DELETE); + test_ret(FS_DELETE_SELF); + test_ret(FS_MOVE_SELF); + test_ret(FS_UNMOUNT); + test_ret(FS_Q_OVERFLOW); + test_ret(FS_IN_IGNORED); + test_ret(FS_ISDIR); + test_ret(FS_IN_ONESHOT); + test_ret(FS_EVENT_ON_CHILD); + return ""; +#undef test_ret +#else + return "??"; +#endif +} +#endif + +/* ---------------------------------------------------------------------- */ + +static void au_hfsn_free_group(struct fsnotify_group *group) +{ + struct au_br_hfsnotify *hfsn = group->private; + + /* AuDbg("here\n"); */ + kfree(hfsn); +} + +static int au_hfsn_handle_event(struct fsnotify_group *group, + struct inode *inode, + u32 mask, const void *data, int data_type, + const unsigned char *file_name, u32 cookie, + struct fsnotify_iter_info *iter_info) +{ + int err; + struct au_hnotify *hnotify; + struct inode *h_dir, *h_inode; + struct qstr h_child_qstr = QSTR_INIT(file_name, strlen(file_name)); + struct fsnotify_mark *inode_mark; + + AuDebugOn(data_type != FSNOTIFY_EVENT_INODE); + + err = 0; + /* if FS_UNMOUNT happens, there must be another bug */ + AuDebugOn(mask & FS_UNMOUNT); + if (mask & (FS_IN_IGNORED | FS_UNMOUNT)) + goto out; + + h_dir = inode; + h_inode = NULL; +#ifdef AuDbgHnotify + au_debug_on(); + if (1 || h_child_qstr.len != sizeof(AUFS_XINO_FNAME) - 1 + || strncmp(h_child_qstr.name, AUFS_XINO_FNAME, h_child_qstr.len)) { + AuDbg("i%lu, mask 0x%x %s, hcname %.*s, hi%lu\n", + h_dir->i_ino, mask, au_hfsn_name(mask), + AuLNPair(&h_child_qstr), h_inode ? h_inode->i_ino : 0); + /* WARN_ON(1); */ + } + au_debug_off(); +#endif + + inode_mark = fsnotify_iter_inode_mark(iter_info); + AuDebugOn(!inode_mark); + hnotify = container_of(inode_mark, struct au_hnotify, hn_mark); + err = au_hnotify(h_dir, hnotify, mask, &h_child_qstr, h_inode); + +out: + return err; +} + +static struct fsnotify_ops au_hfsn_ops = { + .handle_event = au_hfsn_handle_event, + .free_group_priv = au_hfsn_free_group, + .free_mark = au_hfsn_free_mark +}; + +/* ---------------------------------------------------------------------- */ + +static void au_hfsn_fin_br(struct au_branch *br) +{ + struct au_br_hfsnotify *hfsn; + + hfsn = br->br_hfsn; + if (hfsn) { + lockdep_off(); + fsnotify_put_group(hfsn->hfsn_group); + lockdep_on(); + } +} + +static int au_hfsn_init_br(struct au_branch *br, int perm) +{ + int err; + struct fsnotify_group *group; + struct au_br_hfsnotify *hfsn; + + err = 0; + br->br_hfsn = NULL; + if (!au_br_hnotifyable(perm)) + goto out; + + err = -ENOMEM; + hfsn = kmalloc(sizeof(*hfsn), GFP_NOFS); + if (unlikely(!hfsn)) + goto out; + + err = 0; + group = fsnotify_alloc_group(&au_hfsn_ops); + if (IS_ERR(group)) { + err = PTR_ERR(group); + pr_err("fsnotify_alloc_group() failed, %d\n", err); + goto out_hfsn; + } + + group->private = hfsn; + hfsn->hfsn_group = group; + br->br_hfsn = hfsn; + goto out; /* success */ + +out_hfsn: + kfree(hfsn); +out: + return err; +} + +static int au_hfsn_reset_br(unsigned int udba, struct au_branch *br, int perm) +{ + int err; + + err = 0; + if (!br->br_hfsn) + err = au_hfsn_init_br(br, perm); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +static void au_hfsn_fin(void) +{ + AuDbg("au_hfsn_ifree %lld\n", (long long)atomic64_read(&au_hfsn_ifree)); + wait_event(au_hfsn_wq, !atomic64_read(&au_hfsn_ifree)); +} + +const struct au_hnotify_op au_hnotify_op = { + .ctl = au_hfsn_ctl, + .alloc = au_hfsn_alloc, + .free = au_hfsn_free, + + .fin = au_hfsn_fin, + + .reset_br = au_hfsn_reset_br, + .fin_br = au_hfsn_fin_br, + .init_br = au_hfsn_init_br +}; diff --git a/fs/aufs/hfsplus.c b/fs/aufs/hfsplus.c new file mode 100644 index 00000000000..7435a46dda8 --- /dev/null +++ b/fs/aufs/hfsplus.c @@ -0,0 +1,57 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2010-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * special support for filesystems which aqucires an inode mutex + * at final closing a file, eg, hfsplus. + * + * This trick is very simple and stupid, just to open the file before really + * neceeary open to tell hfsplus that this is not the final closing. + * The caller should call au_h_open_pre() after acquiring the inode mutex, + * and au_h_open_post() after releasing it. + */ + +#include "aufs.h" + +struct file *au_h_open_pre(struct dentry *dentry, aufs_bindex_t bindex, + int force_wr) +{ + struct file *h_file; + struct dentry *h_dentry; + + h_dentry = au_h_dptr(dentry, bindex); + AuDebugOn(!h_dentry); + AuDebugOn(d_is_negative(h_dentry)); + + h_file = NULL; + if (au_test_hfsplus(h_dentry->d_sb) + && d_is_reg(h_dentry)) + h_file = au_h_open(dentry, bindex, + O_RDONLY | O_NOATIME | O_LARGEFILE, + /*file*/NULL, force_wr); + return h_file; +} + +void au_h_open_post(struct dentry *dentry, aufs_bindex_t bindex, + struct file *h_file) +{ + if (h_file) { + fput(h_file); + au_sbr_put(dentry->d_sb, bindex); + } +} diff --git a/fs/aufs/hnotify.c b/fs/aufs/hnotify.c new file mode 100644 index 00000000000..bd4bce90d7b --- /dev/null +++ b/fs/aufs/hnotify.c @@ -0,0 +1,720 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * abstraction to notify the direct changes on lower directories + */ + +#include "aufs.h" + +int au_hn_alloc(struct au_hinode *hinode, struct inode *inode) +{ + int err; + struct au_hnotify *hn; + + err = -ENOMEM; + hn = au_cache_alloc_hnotify(); + if (hn) { + hn->hn_aufs_inode = inode; + hinode->hi_notify = hn; + err = au_hnotify_op.alloc(hinode); + AuTraceErr(err); + if (unlikely(err)) { + hinode->hi_notify = NULL; + au_cache_free_hnotify(hn); + /* + * The upper dir was removed by udba, but the same named + * dir left. In this case, aufs assignes a new inode + * number and set the monitor again. + * For the lower dir, the old monitnor is still left. + */ + if (err == -EEXIST) + err = 0; + } + } + + AuTraceErr(err); + return err; +} + +void au_hn_free(struct au_hinode *hinode) +{ + struct au_hnotify *hn; + + hn = hinode->hi_notify; + if (hn) { + hinode->hi_notify = NULL; + if (au_hnotify_op.free(hinode, hn)) + au_cache_free_hnotify(hn); + } +} + +/* ---------------------------------------------------------------------- */ + +void au_hn_ctl(struct au_hinode *hinode, int do_set) +{ + if (hinode->hi_notify) + au_hnotify_op.ctl(hinode, do_set); +} + +void au_hn_reset(struct inode *inode, unsigned int flags) +{ + aufs_bindex_t bindex, bbot; + struct inode *hi; + struct dentry *iwhdentry; + + bbot = au_ibbot(inode); + for (bindex = au_ibtop(inode); bindex <= bbot; bindex++) { + hi = au_h_iptr(inode, bindex); + if (!hi) + continue; + + /* inode_lock_nested(hi, AuLsc_I_CHILD); */ + iwhdentry = au_hi_wh(inode, bindex); + if (iwhdentry) + dget(iwhdentry); + au_igrab(hi); + au_set_h_iptr(inode, bindex, NULL, 0); + au_set_h_iptr(inode, bindex, au_igrab(hi), + flags & ~AuHi_XINO); + iput(hi); + dput(iwhdentry); + /* inode_unlock(hi); */ + } +} + +/* ---------------------------------------------------------------------- */ + +static int hn_xino(struct inode *inode, struct inode *h_inode) +{ + int err; + aufs_bindex_t bindex, bbot, bfound, btop; + struct inode *h_i; + + err = 0; + if (unlikely(inode->i_ino == AUFS_ROOT_INO)) { + pr_warn("branch root dir was changed\n"); + goto out; + } + + bfound = -1; + bbot = au_ibbot(inode); + btop = au_ibtop(inode); +#if 0 /* reserved for future use */ + if (bindex == bbot) { + /* keep this ino in rename case */ + goto out; + } +#endif + for (bindex = btop; bindex <= bbot; bindex++) + if (au_h_iptr(inode, bindex) == h_inode) { + bfound = bindex; + break; + } + if (bfound < 0) + goto out; + + for (bindex = btop; bindex <= bbot; bindex++) { + h_i = au_h_iptr(inode, bindex); + if (!h_i) + continue; + + err = au_xino_write(inode->i_sb, bindex, h_i->i_ino, /*ino*/0); + /* ignore this error */ + /* bad action? */ + } + + /* children inode number will be broken */ + +out: + AuTraceErr(err); + return err; +} + +static int hn_gen_tree(struct dentry *dentry) +{ + int err, i, j, ndentry; + struct au_dcsub_pages dpages; + struct au_dpage *dpage; + struct dentry **dentries; + + err = au_dpages_init(&dpages, GFP_NOFS); + if (unlikely(err)) + goto out; + err = au_dcsub_pages(&dpages, dentry, NULL, NULL); + if (unlikely(err)) + goto out_dpages; + + for (i = 0; i < dpages.ndpage; i++) { + dpage = dpages.dpages + i; + dentries = dpage->dentries; + ndentry = dpage->ndentry; + for (j = 0; j < ndentry; j++) { + struct dentry *d; + + d = dentries[j]; + if (IS_ROOT(d)) + continue; + + au_digen_dec(d); + if (d_really_is_positive(d)) + /* todo: reset children xino? + cached children only? */ + au_iigen_dec(d_inode(d)); + } + } + +out_dpages: + au_dpages_free(&dpages); + +#if 0 + /* discard children */ + dentry_unhash(dentry); + dput(dentry); +#endif +out: + return err; +} + +/* + * return 0 if processed. + */ +static int hn_gen_by_inode(char *name, unsigned int nlen, struct inode *inode, + const unsigned int isdir) +{ + int err; + struct dentry *d; + struct qstr *dname; + + err = 1; + if (unlikely(inode->i_ino == AUFS_ROOT_INO)) { + pr_warn("branch root dir was changed\n"); + err = 0; + goto out; + } + + if (!isdir) { + AuDebugOn(!name); + au_iigen_dec(inode); + spin_lock(&inode->i_lock); + hlist_for_each_entry(d, &inode->i_dentry, d_u.d_alias) { + spin_lock(&d->d_lock); + dname = &d->d_name; + if (dname->len != nlen + && memcmp(dname->name, name, nlen)) { + spin_unlock(&d->d_lock); + continue; + } + err = 0; + au_digen_dec(d); + spin_unlock(&d->d_lock); + break; + } + spin_unlock(&inode->i_lock); + } else { + au_fset_si(au_sbi(inode->i_sb), FAILED_REFRESH_DIR); + d = d_find_any_alias(inode); + if (!d) { + au_iigen_dec(inode); + goto out; + } + + spin_lock(&d->d_lock); + dname = &d->d_name; + if (dname->len == nlen && !memcmp(dname->name, name, nlen)) { + spin_unlock(&d->d_lock); + err = hn_gen_tree(d); + spin_lock(&d->d_lock); + } + spin_unlock(&d->d_lock); + dput(d); + } + +out: + AuTraceErr(err); + return err; +} + +static int hn_gen_by_name(struct dentry *dentry, const unsigned int isdir) +{ + int err; + + if (IS_ROOT(dentry)) { + pr_warn("branch root dir was changed\n"); + return 0; + } + + err = 0; + if (!isdir) { + au_digen_dec(dentry); + if (d_really_is_positive(dentry)) + au_iigen_dec(d_inode(dentry)); + } else { + au_fset_si(au_sbi(dentry->d_sb), FAILED_REFRESH_DIR); + if (d_really_is_positive(dentry)) + err = hn_gen_tree(dentry); + } + + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* hnotify job flags */ +#define AuHnJob_XINO0 1 +#define AuHnJob_GEN (1 << 1) +#define AuHnJob_DIRENT (1 << 2) +#define AuHnJob_ISDIR (1 << 3) +#define AuHnJob_TRYXINO0 (1 << 4) +#define AuHnJob_MNTPNT (1 << 5) +#define au_ftest_hnjob(flags, name) ((flags) & AuHnJob_##name) +#define au_fset_hnjob(flags, name) \ + do { (flags) |= AuHnJob_##name; } while (0) +#define au_fclr_hnjob(flags, name) \ + do { (flags) &= ~AuHnJob_##name; } while (0) + +enum { + AuHn_CHILD, + AuHn_PARENT, + AuHnLast +}; + +struct au_hnotify_args { + struct inode *h_dir, *dir, *h_child_inode; + u32 mask; + unsigned int flags[AuHnLast]; + unsigned int h_child_nlen; + char h_child_name[]; +}; + +struct hn_job_args { + unsigned int flags; + struct inode *inode, *h_inode, *dir, *h_dir; + struct dentry *dentry; + char *h_name; + int h_nlen; +}; + +static int hn_job(struct hn_job_args *a) +{ + const unsigned int isdir = au_ftest_hnjob(a->flags, ISDIR); + int e; + + /* reset xino */ + if (au_ftest_hnjob(a->flags, XINO0) && a->inode) + hn_xino(a->inode, a->h_inode); /* ignore this error */ + + if (au_ftest_hnjob(a->flags, TRYXINO0) + && a->inode + && a->h_inode) { + inode_lock_shared_nested(a->h_inode, AuLsc_I_CHILD); + if (!a->h_inode->i_nlink + && !(a->h_inode->i_state & I_LINKABLE)) + hn_xino(a->inode, a->h_inode); /* ignore this error */ + inode_unlock_shared(a->h_inode); + } + + /* make the generation obsolete */ + if (au_ftest_hnjob(a->flags, GEN)) { + e = -1; + if (a->inode) + e = hn_gen_by_inode(a->h_name, a->h_nlen, a->inode, + isdir); + if (e && a->dentry) + hn_gen_by_name(a->dentry, isdir); + /* ignore this error */ + } + + /* make dir entries obsolete */ + if (au_ftest_hnjob(a->flags, DIRENT) && a->inode) { + struct au_vdir *vdir; + + vdir = au_ivdir(a->inode); + if (vdir) + vdir->vd_jiffy = 0; + /* IMustLock(a->inode); */ + /* inode_inc_iversion(a->inode); */ + } + + /* can do nothing but warn */ + if (au_ftest_hnjob(a->flags, MNTPNT) + && a->dentry + && d_mountpoint(a->dentry)) + pr_warn("mount-point %pd is removed or renamed\n", a->dentry); + + return 0; +} + +/* ---------------------------------------------------------------------- */ + +static struct dentry *lookup_wlock_by_name(char *name, unsigned int nlen, + struct inode *dir) +{ + struct dentry *dentry, *d, *parent; + struct qstr *dname; + + parent = d_find_any_alias(dir); + if (!parent) + return NULL; + + dentry = NULL; + spin_lock(&parent->d_lock); + list_for_each_entry(d, &parent->d_subdirs, d_child) { + /* AuDbg("%pd\n", d); */ + spin_lock_nested(&d->d_lock, DENTRY_D_LOCK_NESTED); + dname = &d->d_name; + if (dname->len != nlen || memcmp(dname->name, name, nlen)) + goto cont_unlock; + if (au_di(d)) + au_digen_dec(d); + else + goto cont_unlock; + if (au_dcount(d) > 0) { + dentry = dget_dlock(d); + spin_unlock(&d->d_lock); + break; + } + +cont_unlock: + spin_unlock(&d->d_lock); + } + spin_unlock(&parent->d_lock); + dput(parent); + + if (dentry) + di_write_lock_child(dentry); + + return dentry; +} + +static struct inode *lookup_wlock_by_ino(struct super_block *sb, + aufs_bindex_t bindex, ino_t h_ino) +{ + struct inode *inode; + ino_t ino; + int err; + + inode = NULL; + err = au_xino_read(sb, bindex, h_ino, &ino); + if (!err && ino) + inode = ilookup(sb, ino); + if (!inode) + goto out; + + if (unlikely(inode->i_ino == AUFS_ROOT_INO)) { + pr_warn("wrong root branch\n"); + iput(inode); + inode = NULL; + goto out; + } + + ii_write_lock_child(inode); + +out: + return inode; +} + +static void au_hn_bh(void *_args) +{ + struct au_hnotify_args *a = _args; + struct super_block *sb; + aufs_bindex_t bindex, bbot, bfound; + unsigned char xino, try_iput; + int err; + struct inode *inode; + ino_t h_ino; + struct hn_job_args args; + struct dentry *dentry; + struct au_sbinfo *sbinfo; + + AuDebugOn(!_args); + AuDebugOn(!a->h_dir); + AuDebugOn(!a->dir); + AuDebugOn(!a->mask); + AuDbg("mask 0x%x, i%lu, hi%lu, hci%lu\n", + a->mask, a->dir->i_ino, a->h_dir->i_ino, + a->h_child_inode ? a->h_child_inode->i_ino : 0); + + inode = NULL; + dentry = NULL; + /* + * do not lock a->dir->i_mutex here + * because of d_revalidate() may cause a deadlock. + */ + sb = a->dir->i_sb; + AuDebugOn(!sb); + sbinfo = au_sbi(sb); + AuDebugOn(!sbinfo); + si_write_lock(sb, AuLock_NOPLMW); + + if (au_opt_test(sbinfo->si_mntflags, DIRREN)) + switch (a->mask & FS_EVENTS_POSS_ON_CHILD) { + case FS_MOVED_FROM: + case FS_MOVED_TO: + AuWarn1("DIRREN with UDBA may not work correctly " + "for the direct rename(2)\n"); + } + + ii_read_lock_parent(a->dir); + bfound = -1; + bbot = au_ibbot(a->dir); + for (bindex = au_ibtop(a->dir); bindex <= bbot; bindex++) + if (au_h_iptr(a->dir, bindex) == a->h_dir) { + bfound = bindex; + break; + } + ii_read_unlock(a->dir); + if (unlikely(bfound < 0)) + goto out; + + xino = !!au_opt_test(au_mntflags(sb), XINO); + h_ino = 0; + if (a->h_child_inode) + h_ino = a->h_child_inode->i_ino; + + if (a->h_child_nlen + && (au_ftest_hnjob(a->flags[AuHn_CHILD], GEN) + || au_ftest_hnjob(a->flags[AuHn_CHILD], MNTPNT))) + dentry = lookup_wlock_by_name(a->h_child_name, a->h_child_nlen, + a->dir); + try_iput = 0; + if (dentry && d_really_is_positive(dentry)) + inode = d_inode(dentry); + if (xino && !inode && h_ino + && (au_ftest_hnjob(a->flags[AuHn_CHILD], XINO0) + || au_ftest_hnjob(a->flags[AuHn_CHILD], TRYXINO0) + || au_ftest_hnjob(a->flags[AuHn_CHILD], GEN))) { + inode = lookup_wlock_by_ino(sb, bfound, h_ino); + try_iput = 1; + } + + args.flags = a->flags[AuHn_CHILD]; + args.dentry = dentry; + args.inode = inode; + args.h_inode = a->h_child_inode; + args.dir = a->dir; + args.h_dir = a->h_dir; + args.h_name = a->h_child_name; + args.h_nlen = a->h_child_nlen; + err = hn_job(&args); + if (dentry) { + if (au_di(dentry)) + di_write_unlock(dentry); + dput(dentry); + } + if (inode && try_iput) { + ii_write_unlock(inode); + iput(inode); + } + + ii_write_lock_parent(a->dir); + args.flags = a->flags[AuHn_PARENT]; + args.dentry = NULL; + args.inode = a->dir; + args.h_inode = a->h_dir; + args.dir = NULL; + args.h_dir = NULL; + args.h_name = NULL; + args.h_nlen = 0; + err = hn_job(&args); + ii_write_unlock(a->dir); + +out: + iput(a->h_child_inode); + iput(a->h_dir); + iput(a->dir); + si_write_unlock(sb); + au_nwt_done(&sbinfo->si_nowait); + kfree(a); +} + +/* ---------------------------------------------------------------------- */ + +int au_hnotify(struct inode *h_dir, struct au_hnotify *hnotify, u32 mask, + struct qstr *h_child_qstr, struct inode *h_child_inode) +{ + int err, len; + unsigned int flags[AuHnLast], f; + unsigned char isdir, isroot, wh; + struct inode *dir; + struct au_hnotify_args *args; + char *p, *h_child_name; + + err = 0; + AuDebugOn(!hnotify || !hnotify->hn_aufs_inode); + dir = igrab(hnotify->hn_aufs_inode); + if (!dir) + goto out; + + isroot = (dir->i_ino == AUFS_ROOT_INO); + wh = 0; + h_child_name = (void *)h_child_qstr->name; + len = h_child_qstr->len; + if (h_child_name) { + if (len > AUFS_WH_PFX_LEN + && !memcmp(h_child_name, AUFS_WH_PFX, AUFS_WH_PFX_LEN)) { + h_child_name += AUFS_WH_PFX_LEN; + len -= AUFS_WH_PFX_LEN; + wh = 1; + } + } + + isdir = 0; + if (h_child_inode) + isdir = !!S_ISDIR(h_child_inode->i_mode); + flags[AuHn_PARENT] = AuHnJob_ISDIR; + flags[AuHn_CHILD] = 0; + if (isdir) + flags[AuHn_CHILD] = AuHnJob_ISDIR; + au_fset_hnjob(flags[AuHn_PARENT], DIRENT); + au_fset_hnjob(flags[AuHn_CHILD], GEN); + switch (mask & FS_EVENTS_POSS_ON_CHILD) { + case FS_MOVED_FROM: + case FS_MOVED_TO: + au_fset_hnjob(flags[AuHn_CHILD], XINO0); + au_fset_hnjob(flags[AuHn_CHILD], MNTPNT); + /*FALLTHROUGH*/ + case FS_CREATE: + AuDebugOn(!h_child_name); + break; + + case FS_DELETE: + /* + * aufs never be able to get this child inode. + * revalidation should be in d_revalidate() + * by checking i_nlink, i_generation or d_unhashed(). + */ + AuDebugOn(!h_child_name); + au_fset_hnjob(flags[AuHn_CHILD], TRYXINO0); + au_fset_hnjob(flags[AuHn_CHILD], MNTPNT); + break; + + default: + AuDebugOn(1); + } + + if (wh) + h_child_inode = NULL; + + err = -ENOMEM; + /* iput() and kfree() will be called in au_hnotify() */ + args = kmalloc(sizeof(*args) + len + 1, GFP_NOFS); + if (unlikely(!args)) { + AuErr1("no memory\n"); + iput(dir); + goto out; + } + args->flags[AuHn_PARENT] = flags[AuHn_PARENT]; + args->flags[AuHn_CHILD] = flags[AuHn_CHILD]; + args->mask = mask; + args->dir = dir; + args->h_dir = igrab(h_dir); + if (h_child_inode) + h_child_inode = igrab(h_child_inode); /* can be NULL */ + args->h_child_inode = h_child_inode; + args->h_child_nlen = len; + if (len) { + p = (void *)args; + p += sizeof(*args); + memcpy(p, h_child_name, len); + p[len] = 0; + } + + /* NFS fires the event for silly-renamed one from kworker */ + f = 0; + if (!dir->i_nlink + || (au_test_nfs(h_dir->i_sb) && (mask & FS_DELETE))) + f = AuWkq_NEST; + err = au_wkq_nowait(au_hn_bh, args, dir->i_sb, f); + if (unlikely(err)) { + pr_err("wkq %d\n", err); + iput(args->h_child_inode); + iput(args->h_dir); + iput(args->dir); + kfree(args); + } + +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +int au_hnotify_reset_br(unsigned int udba, struct au_branch *br, int perm) +{ + int err; + + AuDebugOn(!(udba & AuOptMask_UDBA)); + + err = 0; + if (au_hnotify_op.reset_br) + err = au_hnotify_op.reset_br(udba, br, perm); + + return err; +} + +int au_hnotify_init_br(struct au_branch *br, int perm) +{ + int err; + + err = 0; + if (au_hnotify_op.init_br) + err = au_hnotify_op.init_br(br, perm); + + return err; +} + +void au_hnotify_fin_br(struct au_branch *br) +{ + if (au_hnotify_op.fin_br) + au_hnotify_op.fin_br(br); +} + +static void au_hn_destroy_cache(void) +{ + kmem_cache_destroy(au_cache[AuCache_HNOTIFY]); + au_cache[AuCache_HNOTIFY] = NULL; +} + +int __init au_hnotify_init(void) +{ + int err; + + err = -ENOMEM; + au_cache[AuCache_HNOTIFY] = AuCache(au_hnotify); + if (au_cache[AuCache_HNOTIFY]) { + err = 0; + if (au_hnotify_op.init) + err = au_hnotify_op.init(); + if (unlikely(err)) + au_hn_destroy_cache(); + } + AuTraceErr(err); + return err; +} + +void au_hnotify_fin(void) +{ + if (au_hnotify_op.fin) + au_hnotify_op.fin(); + + /* cf. au_cache_fin() */ + if (au_cache[AuCache_HNOTIFY]) + au_hn_destroy_cache(); +} diff --git a/fs/aufs/i_op.c b/fs/aufs/i_op.c new file mode 100644 index 00000000000..39458780016 --- /dev/null +++ b/fs/aufs/i_op.c @@ -0,0 +1,1460 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * inode operations (except add/del/rename) + */ + +#include +#include +#include +#include +#include "aufs.h" + +static int h_permission(struct inode *h_inode, int mask, + struct path *h_path, int brperm) +{ + int err; + const unsigned char write_mask = !!(mask & (MAY_WRITE | MAY_APPEND)); + + err = -EPERM; + if (write_mask && IS_IMMUTABLE(h_inode)) + goto out; + + err = -EACCES; + if (((mask & MAY_EXEC) + && S_ISREG(h_inode->i_mode) + && (path_noexec(h_path) + || !(h_inode->i_mode & 0111)))) + goto out; + + /* + * - skip the lower fs test in the case of write to ro branch. + * - nfs dir permission write check is optimized, but a policy for + * link/rename requires a real check. + * - nfs always sets SB_POSIXACL regardless its mount option 'noacl.' + * in this case, generic_permission() returns -EOPNOTSUPP. + */ + if ((write_mask && !au_br_writable(brperm)) + || (au_test_nfs(h_inode->i_sb) && S_ISDIR(h_inode->i_mode) + && write_mask && !(mask & MAY_READ)) + || !h_inode->i_op->permission) { + /* AuLabel(generic_permission); */ + /* AuDbg("get_acl %ps\n", h_inode->i_op->get_acl); */ + err = generic_permission(h_inode, mask); + if (err == -EOPNOTSUPP && au_test_nfs_noacl(h_inode)) + err = h_inode->i_op->permission(h_inode, mask); + AuTraceErr(err); + } else { + /* AuLabel(h_inode->permission); */ + err = h_inode->i_op->permission(h_inode, mask); + AuTraceErr(err); + } + + if (!err) + err = devcgroup_inode_permission(h_inode, mask); + if (!err) + err = security_inode_permission(h_inode, mask); + +#if 0 + if (!err) { + /* todo: do we need to call ima_path_check()? */ + struct path h_path = { + .dentry = + .mnt = h_mnt + }; + err = ima_path_check(&h_path, + mask & (MAY_READ | MAY_WRITE | MAY_EXEC), + IMA_COUNT_LEAVE); + } +#endif + +out: + return err; +} + +static int aufs_permission(struct inode *inode, int mask) +{ + int err; + aufs_bindex_t bindex, bbot; + const unsigned char isdir = !!S_ISDIR(inode->i_mode), + write_mask = !!(mask & (MAY_WRITE | MAY_APPEND)); + struct inode *h_inode; + struct super_block *sb; + struct au_branch *br; + + /* todo: support rcu-walk? */ + if (mask & MAY_NOT_BLOCK) + return -ECHILD; + + sb = inode->i_sb; + si_read_lock(sb, AuLock_FLUSH); + ii_read_lock_child(inode); +#if 0 + err = au_iigen_test(inode, au_sigen(sb)); + if (unlikely(err)) + goto out; +#endif + + if (!isdir + || write_mask + || au_opt_test(au_mntflags(sb), DIRPERM1)) { + err = au_busy_or_stale(); + h_inode = au_h_iptr(inode, au_ibtop(inode)); + if (unlikely(!h_inode + || (h_inode->i_mode & S_IFMT) + != (inode->i_mode & S_IFMT))) + goto out; + + err = 0; + bindex = au_ibtop(inode); + br = au_sbr(sb, bindex); + err = h_permission(h_inode, mask, &br->br_path, br->br_perm); + if (write_mask + && !err + && !special_file(h_inode->i_mode)) { + /* test whether the upper writable branch exists */ + err = -EROFS; + for (; bindex >= 0; bindex--) + if (!au_br_rdonly(au_sbr(sb, bindex))) { + err = 0; + break; + } + } + goto out; + } + + /* non-write to dir */ + err = 0; + bbot = au_ibbot(inode); + for (bindex = au_ibtop(inode); !err && bindex <= bbot; bindex++) { + h_inode = au_h_iptr(inode, bindex); + if (h_inode) { + err = au_busy_or_stale(); + if (unlikely(!S_ISDIR(h_inode->i_mode))) + break; + + br = au_sbr(sb, bindex); + err = h_permission(h_inode, mask, &br->br_path, + br->br_perm); + } + } + +out: + ii_read_unlock(inode); + si_read_unlock(sb); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static struct dentry *aufs_lookup(struct inode *dir, struct dentry *dentry, + unsigned int flags) +{ + struct dentry *ret, *parent; + struct inode *inode; + struct super_block *sb; + int err, npositive; + + IMustLock(dir); + + /* todo: support rcu-walk? */ + ret = ERR_PTR(-ECHILD); + if (flags & LOOKUP_RCU) + goto out; + + ret = ERR_PTR(-ENAMETOOLONG); + if (unlikely(dentry->d_name.len > AUFS_MAX_NAMELEN)) + goto out; + + sb = dir->i_sb; + err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM); + ret = ERR_PTR(err); + if (unlikely(err)) + goto out; + + err = au_di_init(dentry); + ret = ERR_PTR(err); + if (unlikely(err)) + goto out_si; + + inode = NULL; + npositive = 0; /* suppress a warning */ + parent = dentry->d_parent; /* dir inode is locked */ + di_read_lock_parent(parent, AuLock_IR); + err = au_alive_dir(parent); + if (!err) + err = au_digen_test(parent, au_sigen(sb)); + if (!err) { + /* regardless LOOKUP_CREATE, always ALLOW_NEG */ + npositive = au_lkup_dentry(dentry, au_dbtop(parent), + AuLkup_ALLOW_NEG); + err = npositive; + } + di_read_unlock(parent, AuLock_IR); + ret = ERR_PTR(err); + if (unlikely(err < 0)) + goto out_unlock; + + if (npositive) { + inode = au_new_inode(dentry, /*must_new*/0); + if (IS_ERR(inode)) { + ret = (void *)inode; + inode = NULL; + goto out_unlock; + } + } + + if (inode) + atomic_inc(&inode->i_count); + ret = d_splice_alias(inode, dentry); +#if 0 + if (unlikely(d_need_lookup(dentry))) { + spin_lock(&dentry->d_lock); + dentry->d_flags &= ~DCACHE_NEED_LOOKUP; + spin_unlock(&dentry->d_lock); + } else +#endif + if (inode) { + if (!IS_ERR(ret)) { + iput(inode); + if (ret && ret != dentry) + ii_write_unlock(inode); + } else { + ii_write_unlock(inode); + iput(inode); + inode = NULL; + } + } + +out_unlock: + di_write_unlock(dentry); +out_si: + si_read_unlock(sb); +out: + return ret; +} + +/* ---------------------------------------------------------------------- */ + +struct aopen_node { + struct hlist_bl_node hblist; + struct file *file, *h_file; +}; + +static int au_do_aopen(struct inode *inode, struct file *file) +{ + struct hlist_bl_head *aopen; + struct hlist_bl_node *pos; + struct aopen_node *node; + struct au_do_open_args args = { + .aopen = 1, + .open = au_do_open_nondir + }; + + aopen = &au_sbi(inode->i_sb)->si_aopen; + hlist_bl_lock(aopen); + hlist_bl_for_each_entry(node, pos, aopen, hblist) + if (node->file == file) { + args.h_file = node->h_file; + break; + } + hlist_bl_unlock(aopen); + /* AuDebugOn(!args.h_file); */ + + return au_do_open(file, &args); +} + +static int aufs_atomic_open(struct inode *dir, struct dentry *dentry, + struct file *file, unsigned int open_flag, + umode_t create_mode, int *opened) +{ + int err, unlocked, h_opened = *opened; + unsigned int lkup_flags; + struct dentry *parent, *d; + struct hlist_bl_head *aopen; + struct vfsub_aopen_args args = { + .open_flag = open_flag, + .create_mode = create_mode, + .opened = &h_opened + }; + struct aopen_node aopen_node = { + .file = file + }; + + IMustLock(dir); + AuDbg("open_flag 0%o\n", open_flag); + AuDbgDentry(dentry); + + err = 0; + if (!au_di(dentry)) { + lkup_flags = LOOKUP_OPEN; + if (open_flag & O_CREAT) + lkup_flags |= LOOKUP_CREATE; + d = aufs_lookup(dir, dentry, lkup_flags); + if (IS_ERR(d)) { + err = PTR_ERR(d); + AuTraceErr(err); + goto out; + } else if (d) { + /* + * obsoleted dentry found. + * another error will be returned later. + */ + d_drop(d); + AuDbgDentry(d); + dput(d); + } + AuDbgDentry(dentry); + } + + if (d_is_positive(dentry) + || d_unhashed(dentry) + || d_unlinked(dentry) + || !(open_flag & O_CREAT)) + goto out_no_open; + + unlocked = 0; + err = aufs_read_lock(dentry, AuLock_DW | AuLock_FLUSH | AuLock_GEN); + if (unlikely(err)) + goto out; + + parent = dentry->d_parent; /* dir is locked */ + di_write_lock_parent(parent); + err = au_lkup_dentry(dentry, /*btop*/0, AuLkup_ALLOW_NEG); + if (unlikely(err)) + goto out_unlock; + + AuDbgDentry(dentry); + if (d_is_positive(dentry)) + goto out_unlock; + + args.file = get_empty_filp(); + err = PTR_ERR(args.file); + if (IS_ERR(args.file)) + goto out_unlock; + + args.file->f_flags = file->f_flags; + err = au_aopen_or_create(dir, dentry, &args); + AuTraceErr(err); + AuDbgFile(args.file); + if (unlikely(err < 0)) { + if (h_opened & FILE_OPENED) + fput(args.file); + else + put_filp(args.file); + goto out_unlock; + } + di_write_unlock(parent); + di_write_unlock(dentry); + unlocked = 1; + + /* some filesystems don't set FILE_CREATED while succeeded? */ + *opened |= FILE_CREATED; + if (h_opened & FILE_OPENED) + aopen_node.h_file = args.file; + else { + put_filp(args.file); + args.file = NULL; + } + aopen = &au_sbi(dir->i_sb)->si_aopen; + au_hbl_add(&aopen_node.hblist, aopen); + err = finish_open(file, dentry, au_do_aopen, opened); + au_hbl_del(&aopen_node.hblist, aopen); + AuTraceErr(err); + AuDbgFile(file); + if (aopen_node.h_file) + fput(aopen_node.h_file); + +out_unlock: + if (unlocked) + si_read_unlock(dentry->d_sb); + else { + di_write_unlock(parent); + aufs_read_unlock(dentry, AuLock_DW); + } + AuDbgDentry(dentry); + if (unlikely(err < 0)) + goto out; +out_no_open: + if (err >= 0 && !(*opened & FILE_CREATED)) { + AuLabel(out_no_open); + dget(dentry); + err = finish_no_open(file, dentry); + } +out: + AuDbg("%pd%s%s\n", dentry, + (*opened & FILE_CREATED) ? " created" : "", + (*opened & FILE_OPENED) ? " opened" : ""); + AuTraceErr(err); + return err; +} + + +/* ---------------------------------------------------------------------- */ + +static int au_wr_dir_cpup(struct dentry *dentry, struct dentry *parent, + const unsigned char add_entry, aufs_bindex_t bcpup, + aufs_bindex_t btop) +{ + int err; + struct dentry *h_parent; + struct inode *h_dir; + + if (add_entry) + IMustLock(d_inode(parent)); + else + di_write_lock_parent(parent); + + err = 0; + if (!au_h_dptr(parent, bcpup)) { + if (btop > bcpup) + err = au_cpup_dirs(dentry, bcpup); + else if (btop < bcpup) + err = au_cpdown_dirs(dentry, bcpup); + else + BUG(); + } + if (!err && add_entry && !au_ftest_wrdir(add_entry, TMPFILE)) { + h_parent = au_h_dptr(parent, bcpup); + h_dir = d_inode(h_parent); + inode_lock_shared_nested(h_dir, AuLsc_I_PARENT); + err = au_lkup_neg(dentry, bcpup, /*wh*/0); + /* todo: no unlock here */ + inode_unlock_shared(h_dir); + + AuDbg("bcpup %d\n", bcpup); + if (!err) { + if (d_really_is_negative(dentry)) + au_set_h_dptr(dentry, btop, NULL); + au_update_dbrange(dentry, /*do_put_zero*/0); + } + } + + if (!add_entry) + di_write_unlock(parent); + if (!err) + err = bcpup; /* success */ + + AuTraceErr(err); + return err; +} + +/* + * decide the branch and the parent dir where we will create a new entry. + * returns new bindex or an error. + * copyup the parent dir if needed. + */ +int au_wr_dir(struct dentry *dentry, struct dentry *src_dentry, + struct au_wr_dir_args *args) +{ + int err; + unsigned int flags; + aufs_bindex_t bcpup, btop, src_btop; + const unsigned char add_entry + = au_ftest_wrdir(args->flags, ADD_ENTRY) + | au_ftest_wrdir(args->flags, TMPFILE); + struct super_block *sb; + struct dentry *parent; + struct au_sbinfo *sbinfo; + + sb = dentry->d_sb; + sbinfo = au_sbi(sb); + parent = dget_parent(dentry); + btop = au_dbtop(dentry); + bcpup = btop; + if (args->force_btgt < 0) { + if (src_dentry) { + src_btop = au_dbtop(src_dentry); + if (src_btop < btop) + bcpup = src_btop; + } else if (add_entry) { + flags = 0; + if (au_ftest_wrdir(args->flags, ISDIR)) + au_fset_wbr(flags, DIR); + err = AuWbrCreate(sbinfo, dentry, flags); + bcpup = err; + } + + if (bcpup < 0 || au_test_ro(sb, bcpup, d_inode(dentry))) { + if (add_entry) + err = AuWbrCopyup(sbinfo, dentry); + else { + if (!IS_ROOT(dentry)) { + di_read_lock_parent(parent, !AuLock_IR); + err = AuWbrCopyup(sbinfo, dentry); + di_read_unlock(parent, !AuLock_IR); + } else + err = AuWbrCopyup(sbinfo, dentry); + } + bcpup = err; + if (unlikely(err < 0)) + goto out; + } + } else { + bcpup = args->force_btgt; + AuDebugOn(au_test_ro(sb, bcpup, d_inode(dentry))); + } + + AuDbg("btop %d, bcpup %d\n", btop, bcpup); + err = bcpup; + if (bcpup == btop) + goto out; /* success */ + + /* copyup the new parent into the branch we process */ + err = au_wr_dir_cpup(dentry, parent, add_entry, bcpup, btop); + if (err >= 0) { + if (d_really_is_negative(dentry)) { + au_set_h_dptr(dentry, btop, NULL); + au_set_dbtop(dentry, bcpup); + au_set_dbbot(dentry, bcpup); + } + AuDebugOn(add_entry + && !au_ftest_wrdir(args->flags, TMPFILE) + && !au_h_dptr(dentry, bcpup)); + } + +out: + dput(parent); + return err; +} + +/* ---------------------------------------------------------------------- */ + +void au_pin_hdir_unlock(struct au_pin *p) +{ + if (p->hdir) + au_hn_inode_unlock(p->hdir); +} + +int au_pin_hdir_lock(struct au_pin *p) +{ + int err; + + err = 0; + if (!p->hdir) + goto out; + + /* even if an error happens later, keep this lock */ + au_hn_inode_lock_nested(p->hdir, p->lsc_hi); + + err = -EBUSY; + if (unlikely(p->hdir->hi_inode != d_inode(p->h_parent))) + goto out; + + err = 0; + if (p->h_dentry) + err = au_h_verify(p->h_dentry, p->udba, p->hdir->hi_inode, + p->h_parent, p->br); + +out: + return err; +} + +int au_pin_hdir_relock(struct au_pin *p) +{ + int err, i; + struct inode *h_i; + struct dentry *h_d[] = { + p->h_dentry, + p->h_parent + }; + + err = au_pin_hdir_lock(p); + if (unlikely(err)) + goto out; + + for (i = 0; !err && i < sizeof(h_d)/sizeof(*h_d); i++) { + if (!h_d[i]) + continue; + if (d_is_positive(h_d[i])) { + h_i = d_inode(h_d[i]); + err = !h_i->i_nlink; + } + } + +out: + return err; +} + +static void au_pin_hdir_set_owner(struct au_pin *p, struct task_struct *task) +{ +#if !defined(CONFIG_RWSEM_GENERIC_SPINLOCK) && defined(CONFIG_RWSEM_SPIN_ON_OWNER) + p->hdir->hi_inode->i_rwsem.owner = task; +#endif +} + +void au_pin_hdir_acquire_nest(struct au_pin *p) +{ + if (p->hdir) { + rwsem_acquire_nest(&p->hdir->hi_inode->i_rwsem.dep_map, + p->lsc_hi, 0, NULL, _RET_IP_); + au_pin_hdir_set_owner(p, current); + } +} + +void au_pin_hdir_release(struct au_pin *p) +{ + if (p->hdir) { + au_pin_hdir_set_owner(p, p->task); + rwsem_release(&p->hdir->hi_inode->i_rwsem.dep_map, 1, _RET_IP_); + } +} + +struct dentry *au_pinned_h_parent(struct au_pin *pin) +{ + if (pin && pin->parent) + return au_h_dptr(pin->parent, pin->bindex); + return NULL; +} + +void au_unpin(struct au_pin *p) +{ + if (p->hdir) + au_pin_hdir_unlock(p); + if (p->h_mnt && au_ftest_pin(p->flags, MNT_WRITE)) + vfsub_mnt_drop_write(p->h_mnt); + if (!p->hdir) + return; + + if (!au_ftest_pin(p->flags, DI_LOCKED)) + di_read_unlock(p->parent, AuLock_IR); + iput(p->hdir->hi_inode); + dput(p->parent); + p->parent = NULL; + p->hdir = NULL; + p->h_mnt = NULL; + /* do not clear p->task */ +} + +int au_do_pin(struct au_pin *p) +{ + int err; + struct super_block *sb; + struct inode *h_dir; + + err = 0; + sb = p->dentry->d_sb; + p->br = au_sbr(sb, p->bindex); + if (IS_ROOT(p->dentry)) { + if (au_ftest_pin(p->flags, MNT_WRITE)) { + p->h_mnt = au_br_mnt(p->br); + err = vfsub_mnt_want_write(p->h_mnt); + if (unlikely(err)) { + au_fclr_pin(p->flags, MNT_WRITE); + goto out_err; + } + } + goto out; + } + + p->h_dentry = NULL; + if (p->bindex <= au_dbbot(p->dentry)) + p->h_dentry = au_h_dptr(p->dentry, p->bindex); + + p->parent = dget_parent(p->dentry); + if (!au_ftest_pin(p->flags, DI_LOCKED)) + di_read_lock(p->parent, AuLock_IR, p->lsc_di); + + h_dir = NULL; + p->h_parent = au_h_dptr(p->parent, p->bindex); + p->hdir = au_hi(d_inode(p->parent), p->bindex); + if (p->hdir) + h_dir = p->hdir->hi_inode; + + /* + * udba case, or + * if DI_LOCKED is not set, then p->parent may be different + * and h_parent can be NULL. + */ + if (unlikely(!p->hdir || !h_dir || !p->h_parent)) { + err = -EBUSY; + if (!au_ftest_pin(p->flags, DI_LOCKED)) + di_read_unlock(p->parent, AuLock_IR); + dput(p->parent); + p->parent = NULL; + goto out_err; + } + + if (au_ftest_pin(p->flags, MNT_WRITE)) { + p->h_mnt = au_br_mnt(p->br); + err = vfsub_mnt_want_write(p->h_mnt); + if (unlikely(err)) { + au_fclr_pin(p->flags, MNT_WRITE); + if (!au_ftest_pin(p->flags, DI_LOCKED)) + di_read_unlock(p->parent, AuLock_IR); + dput(p->parent); + p->parent = NULL; + goto out_err; + } + } + + au_igrab(h_dir); + err = au_pin_hdir_lock(p); + if (!err) + goto out; /* success */ + + au_unpin(p); + +out_err: + pr_err("err %d\n", err); + err = au_busy_or_stale(); +out: + return err; +} + +void au_pin_init(struct au_pin *p, struct dentry *dentry, + aufs_bindex_t bindex, int lsc_di, int lsc_hi, + unsigned int udba, unsigned char flags) +{ + p->dentry = dentry; + p->udba = udba; + p->lsc_di = lsc_di; + p->lsc_hi = lsc_hi; + p->flags = flags; + p->bindex = bindex; + + p->parent = NULL; + p->hdir = NULL; + p->h_mnt = NULL; + + p->h_dentry = NULL; + p->h_parent = NULL; + p->br = NULL; + p->task = current; +} + +int au_pin(struct au_pin *pin, struct dentry *dentry, aufs_bindex_t bindex, + unsigned int udba, unsigned char flags) +{ + au_pin_init(pin, dentry, bindex, AuLsc_DI_PARENT, AuLsc_I_PARENT2, + udba, flags); + return au_do_pin(pin); +} + +/* ---------------------------------------------------------------------- */ + +/* + * ->setattr() and ->getattr() are called in various cases. + * chmod, stat: dentry is revalidated. + * fchmod, fstat: file and dentry are not revalidated, additionally they may be + * unhashed. + * for ->setattr(), ia->ia_file is passed from ftruncate only. + */ +/* todo: consolidate with do_refresh() and simple_reval_dpath() */ +int au_reval_for_attr(struct dentry *dentry, unsigned int sigen) +{ + int err; + struct dentry *parent; + + err = 0; + if (au_digen_test(dentry, sigen)) { + parent = dget_parent(dentry); + di_read_lock_parent(parent, AuLock_IR); + err = au_refresh_dentry(dentry, parent); + di_read_unlock(parent, AuLock_IR); + dput(parent); + } + + AuTraceErr(err); + return err; +} + +int au_pin_and_icpup(struct dentry *dentry, struct iattr *ia, + struct au_icpup_args *a) +{ + int err; + loff_t sz; + aufs_bindex_t btop, ibtop; + struct dentry *hi_wh, *parent; + struct inode *inode; + struct au_wr_dir_args wr_dir_args = { + .force_btgt = -1, + .flags = 0 + }; + + if (d_is_dir(dentry)) + au_fset_wrdir(wr_dir_args.flags, ISDIR); + /* plink or hi_wh() case */ + btop = au_dbtop(dentry); + inode = d_inode(dentry); + ibtop = au_ibtop(inode); + if (btop != ibtop && !au_test_ro(inode->i_sb, ibtop, inode)) + wr_dir_args.force_btgt = ibtop; + err = au_wr_dir(dentry, /*src_dentry*/NULL, &wr_dir_args); + if (unlikely(err < 0)) + goto out; + a->btgt = err; + if (err != btop) + au_fset_icpup(a->flags, DID_CPUP); + + err = 0; + a->pin_flags = AuPin_MNT_WRITE; + parent = NULL; + if (!IS_ROOT(dentry)) { + au_fset_pin(a->pin_flags, DI_LOCKED); + parent = dget_parent(dentry); + di_write_lock_parent(parent); + } + + err = au_pin(&a->pin, dentry, a->btgt, a->udba, a->pin_flags); + if (unlikely(err)) + goto out_parent; + + sz = -1; + a->h_path.dentry = au_h_dptr(dentry, btop); + a->h_inode = d_inode(a->h_path.dentry); + if (ia && (ia->ia_valid & ATTR_SIZE)) { + inode_lock_shared_nested(a->h_inode, AuLsc_I_CHILD); + if (ia->ia_size < i_size_read(a->h_inode)) + sz = ia->ia_size; + inode_unlock_shared(a->h_inode); + } + + hi_wh = NULL; + if (au_ftest_icpup(a->flags, DID_CPUP) && d_unlinked(dentry)) { + hi_wh = au_hi_wh(inode, a->btgt); + if (!hi_wh) { + struct au_cp_generic cpg = { + .dentry = dentry, + .bdst = a->btgt, + .bsrc = -1, + .len = sz, + .pin = &a->pin + }; + err = au_sio_cpup_wh(&cpg, /*file*/NULL); + if (unlikely(err)) + goto out_unlock; + hi_wh = au_hi_wh(inode, a->btgt); + /* todo: revalidate hi_wh? */ + } + } + + if (parent) { + au_pin_set_parent_lflag(&a->pin, /*lflag*/0); + di_downgrade_lock(parent, AuLock_IR); + dput(parent); + parent = NULL; + } + if (!au_ftest_icpup(a->flags, DID_CPUP)) + goto out; /* success */ + + if (!d_unhashed(dentry)) { + struct au_cp_generic cpg = { + .dentry = dentry, + .bdst = a->btgt, + .bsrc = btop, + .len = sz, + .pin = &a->pin, + .flags = AuCpup_DTIME | AuCpup_HOPEN + }; + err = au_sio_cpup_simple(&cpg); + if (!err) + a->h_path.dentry = au_h_dptr(dentry, a->btgt); + } else if (!hi_wh) + a->h_path.dentry = au_h_dptr(dentry, a->btgt); + else + a->h_path.dentry = hi_wh; /* do not dget here */ + +out_unlock: + a->h_inode = d_inode(a->h_path.dentry); + if (!err) + goto out; /* success */ + au_unpin(&a->pin); +out_parent: + if (parent) { + di_write_unlock(parent); + dput(parent); + } +out: + if (!err) + inode_lock_nested(a->h_inode, AuLsc_I_CHILD); + return err; +} + +static int aufs_setattr(struct dentry *dentry, struct iattr *ia) +{ + int err; + struct inode *inode, *delegated; + struct super_block *sb; + struct file *file; + struct au_icpup_args *a; + + inode = d_inode(dentry); + IMustLock(inode); + + err = setattr_prepare(dentry, ia); + if (unlikely(err)) + goto out; + + err = -ENOMEM; + a = kzalloc(sizeof(*a), GFP_NOFS); + if (unlikely(!a)) + goto out; + + if (ia->ia_valid & (ATTR_KILL_SUID | ATTR_KILL_SGID)) + ia->ia_valid &= ~ATTR_MODE; + + file = NULL; + sb = dentry->d_sb; + err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM); + if (unlikely(err)) + goto out_kfree; + + if (ia->ia_valid & ATTR_FILE) { + /* currently ftruncate(2) only */ + AuDebugOn(!d_is_reg(dentry)); + file = ia->ia_file; + err = au_reval_and_lock_fdi(file, au_reopen_nondir, /*wlock*/1, + /*fi_lsc*/0); + if (unlikely(err)) + goto out_si; + ia->ia_file = au_hf_top(file); + a->udba = AuOpt_UDBA_NONE; + } else { + /* fchmod() doesn't pass ia_file */ + a->udba = au_opt_udba(sb); + di_write_lock_child(dentry); + /* no d_unlinked(), to set UDBA_NONE for root */ + if (d_unhashed(dentry)) + a->udba = AuOpt_UDBA_NONE; + if (a->udba != AuOpt_UDBA_NONE) { + AuDebugOn(IS_ROOT(dentry)); + err = au_reval_for_attr(dentry, au_sigen(sb)); + if (unlikely(err)) + goto out_dentry; + } + } + + err = au_pin_and_icpup(dentry, ia, a); + if (unlikely(err < 0)) + goto out_dentry; + if (au_ftest_icpup(a->flags, DID_CPUP)) { + ia->ia_file = NULL; + ia->ia_valid &= ~ATTR_FILE; + } + + a->h_path.mnt = au_sbr_mnt(sb, a->btgt); + if ((ia->ia_valid & (ATTR_MODE | ATTR_CTIME)) + == (ATTR_MODE | ATTR_CTIME)) { + err = security_path_chmod(&a->h_path, ia->ia_mode); + if (unlikely(err)) + goto out_unlock; + } else if ((ia->ia_valid & (ATTR_UID | ATTR_GID)) + && (ia->ia_valid & ATTR_CTIME)) { + err = security_path_chown(&a->h_path, ia->ia_uid, ia->ia_gid); + if (unlikely(err)) + goto out_unlock; + } + + if (ia->ia_valid & ATTR_SIZE) { + struct file *f; + + if (ia->ia_size < i_size_read(inode)) + /* unmap only */ + truncate_setsize(inode, ia->ia_size); + + f = NULL; + if (ia->ia_valid & ATTR_FILE) + f = ia->ia_file; + inode_unlock(a->h_inode); + err = vfsub_trunc(&a->h_path, ia->ia_size, ia->ia_valid, f); + inode_lock_nested(a->h_inode, AuLsc_I_CHILD); + } else { + delegated = NULL; + while (1) { + err = vfsub_notify_change(&a->h_path, ia, &delegated); + if (delegated) { + err = break_deleg_wait(&delegated); + if (!err) + continue; + } + break; + } + } + /* + * regardless aufs 'acl' option setting. + * why don't all acl-aware fs call this func from their ->setattr()? + */ + if (!err && (ia->ia_valid & ATTR_MODE)) + err = vfsub_acl_chmod(a->h_inode, ia->ia_mode); + if (!err) + au_cpup_attr_changeable(inode); + +out_unlock: + inode_unlock(a->h_inode); + au_unpin(&a->pin); + if (unlikely(err)) + au_update_dbtop(dentry); +out_dentry: + di_write_unlock(dentry); + if (file) { + fi_write_unlock(file); + ia->ia_file = file; + ia->ia_valid |= ATTR_FILE; + } +out_si: + si_read_unlock(sb); +out_kfree: + kfree(a); +out: + AuTraceErr(err); + return err; +} + +#if IS_ENABLED(CONFIG_AUFS_XATTR) || IS_ENABLED(CONFIG_FS_POSIX_ACL) +static int au_h_path_to_set_attr(struct dentry *dentry, + struct au_icpup_args *a, struct path *h_path) +{ + int err; + struct super_block *sb; + + sb = dentry->d_sb; + a->udba = au_opt_udba(sb); + /* no d_unlinked(), to set UDBA_NONE for root */ + if (d_unhashed(dentry)) + a->udba = AuOpt_UDBA_NONE; + if (a->udba != AuOpt_UDBA_NONE) { + AuDebugOn(IS_ROOT(dentry)); + err = au_reval_for_attr(dentry, au_sigen(sb)); + if (unlikely(err)) + goto out; + } + err = au_pin_and_icpup(dentry, /*ia*/NULL, a); + if (unlikely(err < 0)) + goto out; + + h_path->dentry = a->h_path.dentry; + h_path->mnt = au_sbr_mnt(sb, a->btgt); + +out: + return err; +} + +ssize_t au_sxattr(struct dentry *dentry, struct inode *inode, + struct au_sxattr *arg) +{ + int err; + struct path h_path; + struct super_block *sb; + struct au_icpup_args *a; + struct inode *h_inode; + + IMustLock(inode); + + err = -ENOMEM; + a = kzalloc(sizeof(*a), GFP_NOFS); + if (unlikely(!a)) + goto out; + + sb = dentry->d_sb; + err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM); + if (unlikely(err)) + goto out_kfree; + + h_path.dentry = NULL; /* silence gcc */ + di_write_lock_child(dentry); + err = au_h_path_to_set_attr(dentry, a, &h_path); + if (unlikely(err)) + goto out_di; + + inode_unlock(a->h_inode); + switch (arg->type) { + case AU_XATTR_SET: + AuDebugOn(d_is_negative(h_path.dentry)); + err = vfsub_setxattr(h_path.dentry, + arg->u.set.name, arg->u.set.value, + arg->u.set.size, arg->u.set.flags); + break; + case AU_ACL_SET: + err = -EOPNOTSUPP; + h_inode = d_inode(h_path.dentry); + if (h_inode->i_op->set_acl) + /* this will call posix_acl_update_mode */ + err = h_inode->i_op->set_acl(h_inode, + arg->u.acl_set.acl, + arg->u.acl_set.type); + break; + } + if (!err) + au_cpup_attr_timesizes(inode); + + au_unpin(&a->pin); + if (unlikely(err)) + au_update_dbtop(dentry); + +out_di: + di_write_unlock(dentry); + si_read_unlock(sb); +out_kfree: + kfree(a); +out: + AuTraceErr(err); + return err; +} +#endif + +static void au_refresh_iattr(struct inode *inode, struct kstat *st, + unsigned int nlink) +{ + unsigned int n; + + inode->i_mode = st->mode; + /* don't i_[ug]id_write() here */ + inode->i_uid = st->uid; + inode->i_gid = st->gid; + inode->i_atime = st->atime; + inode->i_mtime = st->mtime; + inode->i_ctime = st->ctime; + + au_cpup_attr_nlink(inode, /*force*/0); + if (S_ISDIR(inode->i_mode)) { + n = inode->i_nlink; + n -= nlink; + n += st->nlink; + smp_mb(); /* for i_nlink */ + /* 0 can happen */ + set_nlink(inode, n); + } + + spin_lock(&inode->i_lock); + inode->i_blocks = st->blocks; + i_size_write(inode, st->size); + spin_unlock(&inode->i_lock); +} + +/* + * common routine for aufs_getattr() and au_getxattr(). + * returns zero or negative (an error). + * @dentry will be read-locked in success. + */ +int au_h_path_getattr(struct dentry *dentry, int force, struct path *h_path, + int locked) +{ + int err; + unsigned int mnt_flags, sigen; + unsigned char udba_none; + aufs_bindex_t bindex; + struct super_block *sb, *h_sb; + struct inode *inode; + + h_path->mnt = NULL; + h_path->dentry = NULL; + + err = 0; + sb = dentry->d_sb; + mnt_flags = au_mntflags(sb); + udba_none = !!au_opt_test(mnt_flags, UDBA_NONE); + + if (unlikely(locked)) + goto body; /* skip locking dinfo */ + + /* support fstat(2) */ + if (!d_unlinked(dentry) && !udba_none) { + sigen = au_sigen(sb); + err = au_digen_test(dentry, sigen); + if (!err) { + di_read_lock_child(dentry, AuLock_IR); + err = au_dbrange_test(dentry); + if (unlikely(err)) { + di_read_unlock(dentry, AuLock_IR); + goto out; + } + } else { + AuDebugOn(IS_ROOT(dentry)); + di_write_lock_child(dentry); + err = au_dbrange_test(dentry); + if (!err) + err = au_reval_for_attr(dentry, sigen); + if (!err) + di_downgrade_lock(dentry, AuLock_IR); + else { + di_write_unlock(dentry); + goto out; + } + } + } else + di_read_lock_child(dentry, AuLock_IR); + +body: + inode = d_inode(dentry); + bindex = au_ibtop(inode); + h_path->mnt = au_sbr_mnt(sb, bindex); + h_sb = h_path->mnt->mnt_sb; + if (!force + && !au_test_fs_bad_iattr(h_sb) + && udba_none) + goto out; /* success */ + + if (au_dbtop(dentry) == bindex) + h_path->dentry = au_h_dptr(dentry, bindex); + else if (au_opt_test(mnt_flags, PLINK) && au_plink_test(inode)) { + h_path->dentry = au_plink_lkup(inode, bindex); + if (IS_ERR(h_path->dentry)) + /* pretending success */ + h_path->dentry = NULL; + else + dput(h_path->dentry); + } + +out: + return err; +} + +static int aufs_getattr(const struct path *path, struct kstat *st, + u32 request, unsigned int query) +{ + int err; + unsigned char positive; + struct path h_path; + struct dentry *dentry; + struct inode *inode; + struct super_block *sb; + + dentry = path->dentry; + inode = d_inode(dentry); + sb = dentry->d_sb; + err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM); + if (unlikely(err)) + goto out; + err = au_h_path_getattr(dentry, /*force*/0, &h_path, /*locked*/0); + if (unlikely(err)) + goto out_si; + if (unlikely(!h_path.dentry)) + /* illegally overlapped or something */ + goto out_fill; /* pretending success */ + + positive = d_is_positive(h_path.dentry); + if (positive) + /* no vfsub version */ + err = vfs_getattr(&h_path, st, request, query); + if (!err) { + if (positive) + au_refresh_iattr(inode, st, + d_inode(h_path.dentry)->i_nlink); + goto out_fill; /* success */ + } + AuTraceErr(err); + goto out_di; + +out_fill: + generic_fillattr(inode, st); +out_di: + di_read_unlock(dentry, AuLock_IR); +out_si: + si_read_unlock(sb); +out: + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static const char *aufs_get_link(struct dentry *dentry, struct inode *inode, + struct delayed_call *done) +{ + const char *ret; + struct dentry *h_dentry; + struct inode *h_inode; + int err; + aufs_bindex_t bindex; + + ret = NULL; /* suppress a warning */ + err = -ECHILD; + if (!dentry) + goto out; + + err = aufs_read_lock(dentry, AuLock_IR | AuLock_GEN); + if (unlikely(err)) + goto out; + + err = au_d_hashed_positive(dentry); + if (unlikely(err)) + goto out_unlock; + + err = -EINVAL; + inode = d_inode(dentry); + bindex = au_ibtop(inode); + h_inode = au_h_iptr(inode, bindex); + if (unlikely(!h_inode->i_op->get_link)) + goto out_unlock; + + err = -EBUSY; + h_dentry = NULL; + if (au_dbtop(dentry) <= bindex) { + h_dentry = au_h_dptr(dentry, bindex); + if (h_dentry) + dget(h_dentry); + } + if (!h_dentry) { + h_dentry = d_find_any_alias(h_inode); + if (IS_ERR(h_dentry)) { + err = PTR_ERR(h_dentry); + goto out_unlock; + } + } + if (unlikely(!h_dentry)) + goto out_unlock; + + err = 0; + AuDbg("%ps\n", h_inode->i_op->get_link); + AuDbgDentry(h_dentry); + ret = vfs_get_link(h_dentry, done); + dput(h_dentry); + if (IS_ERR(ret)) + err = PTR_ERR(ret); + +out_unlock: + aufs_read_unlock(dentry, AuLock_IR); +out: + if (unlikely(err)) + ret = ERR_PTR(err); + AuTraceErrPtr(ret); + return ret; +} + +/* ---------------------------------------------------------------------- */ + +static int au_is_special(struct inode *inode) +{ + return (inode->i_mode & (S_IFBLK | S_IFCHR | S_IFIFO | S_IFSOCK)); +} + +static int aufs_update_time(struct inode *inode, struct timespec64 *ts, int flags) +{ + int err; + aufs_bindex_t bindex; + struct super_block *sb; + struct inode *h_inode; + struct vfsmount *h_mnt; + + sb = inode->i_sb; + WARN_ONCE((flags & S_ATIME) && !IS_NOATIME(inode), + "unexpected s_flags 0x%lx", sb->s_flags); + + /* mmap_sem might be acquired already, cf. aufs_mmap() */ + lockdep_off(); + si_read_lock(sb, AuLock_FLUSH); + ii_write_lock_child(inode); + + err = 0; + bindex = au_ibtop(inode); + h_inode = au_h_iptr(inode, bindex); + if (!au_test_ro(sb, bindex, inode)) { + h_mnt = au_sbr_mnt(sb, bindex); + err = vfsub_mnt_want_write(h_mnt); + if (!err) { + err = vfsub_update_time(h_inode, ts, flags); + vfsub_mnt_drop_write(h_mnt); + } + } else if (au_is_special(h_inode)) { + /* + * Never copy-up here. + * These special files may already be opened and used for + * communicating. If we copied it up, then the communication + * would be corrupted. + */ + AuWarn1("timestamps for i%lu are ignored " + "since it is on readonly branch (hi%lu).\n", + inode->i_ino, h_inode->i_ino); + } else if (flags & ~S_ATIME) { + err = -EIO; + AuIOErr1("unexpected flags 0x%x\n", flags); + AuDebugOn(1); + } + + if (!err) + au_cpup_attr_timesizes(inode); + ii_write_unlock(inode); + si_read_unlock(sb); + lockdep_on(); + + if (!err && (flags & S_VERSION)) + inode_inc_iversion(inode); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* no getattr version will be set by module.c:aufs_init() */ +struct inode_operations aufs_iop_nogetattr[AuIop_Last], + aufs_iop[] = { + [AuIop_SYMLINK] = { + .permission = aufs_permission, +#ifdef CONFIG_FS_POSIX_ACL + .get_acl = aufs_get_acl, + .set_acl = aufs_set_acl, /* unsupport for symlink? */ +#endif + + .setattr = aufs_setattr, + .getattr = aufs_getattr, + +#ifdef CONFIG_AUFS_XATTR + .listxattr = aufs_listxattr, +#endif + + .get_link = aufs_get_link, + + /* .update_time = aufs_update_time */ + }, + [AuIop_DIR] = { + .create = aufs_create, + .lookup = aufs_lookup, + .link = aufs_link, + .unlink = aufs_unlink, + .symlink = aufs_symlink, + .mkdir = aufs_mkdir, + .rmdir = aufs_rmdir, + .mknod = aufs_mknod, + .rename = aufs_rename, + + .permission = aufs_permission, +#ifdef CONFIG_FS_POSIX_ACL + .get_acl = aufs_get_acl, + .set_acl = aufs_set_acl, +#endif + + .setattr = aufs_setattr, + .getattr = aufs_getattr, + +#ifdef CONFIG_AUFS_XATTR + .listxattr = aufs_listxattr, +#endif + + .update_time = aufs_update_time, + .atomic_open = aufs_atomic_open, + .tmpfile = aufs_tmpfile + }, + [AuIop_OTHER] = { + .permission = aufs_permission, +#ifdef CONFIG_FS_POSIX_ACL + .get_acl = aufs_get_acl, + .set_acl = aufs_set_acl, +#endif + + .setattr = aufs_setattr, + .getattr = aufs_getattr, + +#ifdef CONFIG_AUFS_XATTR + .listxattr = aufs_listxattr, +#endif + + .update_time = aufs_update_time + } +}; diff --git a/fs/aufs/i_op_add.c b/fs/aufs/i_op_add.c new file mode 100644 index 00000000000..42abd1ad21a --- /dev/null +++ b/fs/aufs/i_op_add.c @@ -0,0 +1,921 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * inode operations (add entry) + */ + +#include "aufs.h" + +/* + * final procedure of adding a new entry, except link(2). + * remove whiteout, instantiate, copyup the parent dir's times and size + * and update version. + * if it failed, re-create the removed whiteout. + */ +static int epilog(struct inode *dir, aufs_bindex_t bindex, + struct dentry *wh_dentry, struct dentry *dentry) +{ + int err, rerr; + aufs_bindex_t bwh; + struct path h_path; + struct super_block *sb; + struct inode *inode, *h_dir; + struct dentry *wh; + + bwh = -1; + sb = dir->i_sb; + if (wh_dentry) { + h_dir = d_inode(wh_dentry->d_parent); /* dir inode is locked */ + IMustLock(h_dir); + AuDebugOn(au_h_iptr(dir, bindex) != h_dir); + bwh = au_dbwh(dentry); + h_path.dentry = wh_dentry; + h_path.mnt = au_sbr_mnt(sb, bindex); + err = au_wh_unlink_dentry(au_h_iptr(dir, bindex), &h_path, + dentry); + if (unlikely(err)) + goto out; + } + + inode = au_new_inode(dentry, /*must_new*/1); + if (!IS_ERR(inode)) { + d_instantiate(dentry, inode); + dir = d_inode(dentry->d_parent); /* dir inode is locked */ + IMustLock(dir); + au_dir_ts(dir, bindex); + inode_inc_iversion(dir); + au_fhsm_wrote(sb, bindex, /*force*/0); + return 0; /* success */ + } + + err = PTR_ERR(inode); + if (!wh_dentry) + goto out; + + /* revert */ + /* dir inode is locked */ + wh = au_wh_create(dentry, bwh, wh_dentry->d_parent); + rerr = PTR_ERR(wh); + if (IS_ERR(wh)) { + AuIOErr("%pd reverting whiteout failed(%d, %d)\n", + dentry, err, rerr); + err = -EIO; + } else + dput(wh); + +out: + return err; +} + +static int au_d_may_add(struct dentry *dentry) +{ + int err; + + err = 0; + if (unlikely(d_unhashed(dentry))) + err = -ENOENT; + if (unlikely(d_really_is_positive(dentry))) + err = -EEXIST; + return err; +} + +/* + * simple tests for the adding inode operations. + * following the checks in vfs, plus the parent-child relationship. + */ +int au_may_add(struct dentry *dentry, aufs_bindex_t bindex, + struct dentry *h_parent, int isdir) +{ + int err; + umode_t h_mode; + struct dentry *h_dentry; + struct inode *h_inode; + + err = -ENAMETOOLONG; + if (unlikely(dentry->d_name.len > AUFS_MAX_NAMELEN)) + goto out; + + h_dentry = au_h_dptr(dentry, bindex); + if (d_really_is_negative(dentry)) { + err = -EEXIST; + if (unlikely(d_is_positive(h_dentry))) + goto out; + } else { + /* rename(2) case */ + err = -EIO; + if (unlikely(d_is_negative(h_dentry))) + goto out; + h_inode = d_inode(h_dentry); + if (unlikely(!h_inode->i_nlink)) + goto out; + + h_mode = h_inode->i_mode; + if (!isdir) { + err = -EISDIR; + if (unlikely(S_ISDIR(h_mode))) + goto out; + } else if (unlikely(!S_ISDIR(h_mode))) { + err = -ENOTDIR; + goto out; + } + } + + err = 0; + /* expected parent dir is locked */ + if (unlikely(h_parent != h_dentry->d_parent)) + err = -EIO; + +out: + AuTraceErr(err); + return err; +} + +/* + * initial procedure of adding a new entry. + * prepare writable branch and the parent dir, lock it, + * and lookup whiteout for the new entry. + */ +static struct dentry* +lock_hdir_lkup_wh(struct dentry *dentry, struct au_dtime *dt, + struct dentry *src_dentry, struct au_pin *pin, + struct au_wr_dir_args *wr_dir_args) +{ + struct dentry *wh_dentry, *h_parent; + struct super_block *sb; + struct au_branch *br; + int err; + unsigned int udba; + aufs_bindex_t bcpup; + + AuDbg("%pd\n", dentry); + + err = au_wr_dir(dentry, src_dentry, wr_dir_args); + bcpup = err; + wh_dentry = ERR_PTR(err); + if (unlikely(err < 0)) + goto out; + + sb = dentry->d_sb; + udba = au_opt_udba(sb); + err = au_pin(pin, dentry, bcpup, udba, + AuPin_DI_LOCKED | AuPin_MNT_WRITE); + wh_dentry = ERR_PTR(err); + if (unlikely(err)) + goto out; + + h_parent = au_pinned_h_parent(pin); + if (udba != AuOpt_UDBA_NONE + && au_dbtop(dentry) == bcpup) + err = au_may_add(dentry, bcpup, h_parent, + au_ftest_wrdir(wr_dir_args->flags, ISDIR)); + else if (unlikely(dentry->d_name.len > AUFS_MAX_NAMELEN)) + err = -ENAMETOOLONG; + wh_dentry = ERR_PTR(err); + if (unlikely(err)) + goto out_unpin; + + br = au_sbr(sb, bcpup); + if (dt) { + struct path tmp = { + .dentry = h_parent, + .mnt = au_br_mnt(br) + }; + au_dtime_store(dt, au_pinned_parent(pin), &tmp); + } + + wh_dentry = NULL; + if (bcpup != au_dbwh(dentry)) + goto out; /* success */ + + /* + * ENAMETOOLONG here means that if we allowed create such name, then it + * would not be able to removed in the future. So we don't allow such + * name here and we don't handle ENAMETOOLONG differently here. + */ + wh_dentry = au_wh_lkup(h_parent, &dentry->d_name, br); + +out_unpin: + if (IS_ERR(wh_dentry)) + au_unpin(pin); +out: + return wh_dentry; +} + +/* ---------------------------------------------------------------------- */ + +enum { Mknod, Symlink, Creat }; +struct simple_arg { + int type; + union { + struct { + umode_t mode; + bool want_excl; + bool try_aopen; + struct vfsub_aopen_args *aopen; + } c; + struct { + const char *symname; + } s; + struct { + umode_t mode; + dev_t dev; + } m; + } u; +}; + +static int add_simple(struct inode *dir, struct dentry *dentry, + struct simple_arg *arg) +{ + int err, rerr; + aufs_bindex_t btop; + unsigned char created; + const unsigned char try_aopen + = (arg->type == Creat && arg->u.c.try_aopen); + struct dentry *wh_dentry, *parent; + struct inode *h_dir; + struct super_block *sb; + struct au_branch *br; + /* to reuduce stack size */ + struct { + struct au_dtime dt; + struct au_pin pin; + struct path h_path; + struct au_wr_dir_args wr_dir_args; + } *a; + + AuDbg("%pd\n", dentry); + IMustLock(dir); + + err = -ENOMEM; + a = kmalloc(sizeof(*a), GFP_NOFS); + if (unlikely(!a)) + goto out; + a->wr_dir_args.force_btgt = -1; + a->wr_dir_args.flags = AuWrDir_ADD_ENTRY; + + parent = dentry->d_parent; /* dir inode is locked */ + if (!try_aopen) { + err = aufs_read_lock(dentry, AuLock_DW | AuLock_GEN); + if (unlikely(err)) + goto out_free; + } + err = au_d_may_add(dentry); + if (unlikely(err)) + goto out_unlock; + if (!try_aopen) + di_write_lock_parent(parent); + wh_dentry = lock_hdir_lkup_wh(dentry, &a->dt, /*src_dentry*/NULL, + &a->pin, &a->wr_dir_args); + err = PTR_ERR(wh_dentry); + if (IS_ERR(wh_dentry)) + goto out_parent; + + btop = au_dbtop(dentry); + sb = dentry->d_sb; + br = au_sbr(sb, btop); + a->h_path.dentry = au_h_dptr(dentry, btop); + a->h_path.mnt = au_br_mnt(br); + h_dir = au_pinned_h_dir(&a->pin); + switch (arg->type) { + case Creat: + err = 0; + if (!try_aopen || !h_dir->i_op->atomic_open) + err = vfsub_create(h_dir, &a->h_path, arg->u.c.mode, + arg->u.c.want_excl); + else + err = vfsub_atomic_open(h_dir, a->h_path.dentry, + arg->u.c.aopen, br); + break; + case Symlink: + err = vfsub_symlink(h_dir, &a->h_path, arg->u.s.symname); + break; + case Mknod: + err = vfsub_mknod(h_dir, &a->h_path, arg->u.m.mode, + arg->u.m.dev); + break; + default: + BUG(); + } + created = !err; + if (!err) + err = epilog(dir, btop, wh_dentry, dentry); + + /* revert */ + if (unlikely(created && err && d_is_positive(a->h_path.dentry))) { + /* no delegation since it is just created */ + rerr = vfsub_unlink(h_dir, &a->h_path, /*delegated*/NULL, + /*force*/0); + if (rerr) { + AuIOErr("%pd revert failure(%d, %d)\n", + dentry, err, rerr); + err = -EIO; + } + au_dtime_revert(&a->dt); + } + + if (!err && try_aopen && !h_dir->i_op->atomic_open) + *arg->u.c.aopen->opened |= FILE_CREATED; + + au_unpin(&a->pin); + dput(wh_dentry); + +out_parent: + if (!try_aopen) + di_write_unlock(parent); +out_unlock: + if (unlikely(err)) { + au_update_dbtop(dentry); + d_drop(dentry); + } + if (!try_aopen) + aufs_read_unlock(dentry, AuLock_DW); +out_free: + kfree(a); +out: + return err; +} + +int aufs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, + dev_t dev) +{ + struct simple_arg arg = { + .type = Mknod, + .u.m = { + .mode = mode, + .dev = dev + } + }; + return add_simple(dir, dentry, &arg); +} + +int aufs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) +{ + struct simple_arg arg = { + .type = Symlink, + .u.s.symname = symname + }; + return add_simple(dir, dentry, &arg); +} + +int aufs_create(struct inode *dir, struct dentry *dentry, umode_t mode, + bool want_excl) +{ + struct simple_arg arg = { + .type = Creat, + .u.c = { + .mode = mode, + .want_excl = want_excl + } + }; + return add_simple(dir, dentry, &arg); +} + +int au_aopen_or_create(struct inode *dir, struct dentry *dentry, + struct vfsub_aopen_args *aopen_args) +{ + struct simple_arg arg = { + .type = Creat, + .u.c = { + .mode = aopen_args->create_mode, + .want_excl = aopen_args->open_flag & O_EXCL, + .try_aopen = true, + .aopen = aopen_args + } + }; + return add_simple(dir, dentry, &arg); +} + +int aufs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) +{ + int err; + aufs_bindex_t bindex; + struct super_block *sb; + struct dentry *parent, *h_parent, *h_dentry; + struct inode *h_dir, *inode; + struct vfsmount *h_mnt; + struct au_wr_dir_args wr_dir_args = { + .force_btgt = -1, + .flags = AuWrDir_TMPFILE + }; + + /* copy-up may happen */ + inode_lock(dir); + + sb = dir->i_sb; + err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM); + if (unlikely(err)) + goto out; + + err = au_di_init(dentry); + if (unlikely(err)) + goto out_si; + + err = -EBUSY; + parent = d_find_any_alias(dir); + AuDebugOn(!parent); + di_write_lock_parent(parent); + if (unlikely(d_inode(parent) != dir)) + goto out_parent; + + err = au_digen_test(parent, au_sigen(sb)); + if (unlikely(err)) + goto out_parent; + + bindex = au_dbtop(parent); + au_set_dbtop(dentry, bindex); + au_set_dbbot(dentry, bindex); + err = au_wr_dir(dentry, /*src_dentry*/NULL, &wr_dir_args); + bindex = err; + if (unlikely(err < 0)) + goto out_parent; + + err = -EOPNOTSUPP; + h_dir = au_h_iptr(dir, bindex); + if (unlikely(!h_dir->i_op->tmpfile)) + goto out_parent; + + h_mnt = au_sbr_mnt(sb, bindex); + err = vfsub_mnt_want_write(h_mnt); + if (unlikely(err)) + goto out_parent; + + h_parent = au_h_dptr(parent, bindex); + h_dentry = vfs_tmpfile(h_parent, mode, /*open_flag*/0); + if (IS_ERR(h_dentry)) { + err = PTR_ERR(h_dentry); + goto out_mnt; + } + + au_set_dbtop(dentry, bindex); + au_set_dbbot(dentry, bindex); + au_set_h_dptr(dentry, bindex, dget(h_dentry)); + inode = au_new_inode(dentry, /*must_new*/1); + if (IS_ERR(inode)) { + err = PTR_ERR(inode); + au_set_h_dptr(dentry, bindex, NULL); + au_set_dbtop(dentry, -1); + au_set_dbbot(dentry, -1); + } else { + if (!inode->i_nlink) + set_nlink(inode, 1); + d_tmpfile(dentry, inode); + au_di(dentry)->di_tmpfile = 1; + + /* update without i_mutex */ + if (au_ibtop(dir) == au_dbtop(dentry)) + au_cpup_attr_timesizes(dir); + } + dput(h_dentry); + +out_mnt: + vfsub_mnt_drop_write(h_mnt); +out_parent: + di_write_unlock(parent); + dput(parent); + di_write_unlock(dentry); + if (unlikely(err)) { + au_di_fin(dentry); + dentry->d_fsdata = NULL; + } +out_si: + si_read_unlock(sb); +out: + inode_unlock(dir); + return err; +} + +/* ---------------------------------------------------------------------- */ + +struct au_link_args { + aufs_bindex_t bdst, bsrc; + struct au_pin pin; + struct path h_path; + struct dentry *src_parent, *parent; +}; + +static int au_cpup_before_link(struct dentry *src_dentry, + struct au_link_args *a) +{ + int err; + struct dentry *h_src_dentry; + struct au_cp_generic cpg = { + .dentry = src_dentry, + .bdst = a->bdst, + .bsrc = a->bsrc, + .len = -1, + .pin = &a->pin, + .flags = AuCpup_DTIME | AuCpup_HOPEN /* | AuCpup_KEEPLINO */ + }; + + di_read_lock_parent(a->src_parent, AuLock_IR); + err = au_test_and_cpup_dirs(src_dentry, a->bdst); + if (unlikely(err)) + goto out; + + h_src_dentry = au_h_dptr(src_dentry, a->bsrc); + err = au_pin(&a->pin, src_dentry, a->bdst, + au_opt_udba(src_dentry->d_sb), + AuPin_DI_LOCKED | AuPin_MNT_WRITE); + if (unlikely(err)) + goto out; + + err = au_sio_cpup_simple(&cpg); + au_unpin(&a->pin); + +out: + di_read_unlock(a->src_parent, AuLock_IR); + return err; +} + +static int au_cpup_or_link(struct dentry *src_dentry, struct dentry *dentry, + struct au_link_args *a) +{ + int err; + unsigned char plink; + aufs_bindex_t bbot; + struct dentry *h_src_dentry; + struct inode *h_inode, *inode, *delegated; + struct super_block *sb; + struct file *h_file; + + plink = 0; + h_inode = NULL; + sb = src_dentry->d_sb; + inode = d_inode(src_dentry); + if (au_ibtop(inode) <= a->bdst) + h_inode = au_h_iptr(inode, a->bdst); + if (!h_inode || !h_inode->i_nlink) { + /* copyup src_dentry as the name of dentry. */ + bbot = au_dbbot(dentry); + if (bbot < a->bsrc) + au_set_dbbot(dentry, a->bsrc); + au_set_h_dptr(dentry, a->bsrc, + dget(au_h_dptr(src_dentry, a->bsrc))); + dget(a->h_path.dentry); + au_set_h_dptr(dentry, a->bdst, NULL); + AuDbg("temporary d_inode...\n"); + spin_lock(&dentry->d_lock); + dentry->d_inode = d_inode(src_dentry); /* tmp */ + spin_unlock(&dentry->d_lock); + h_file = au_h_open_pre(dentry, a->bsrc, /*force_wr*/0); + if (IS_ERR(h_file)) + err = PTR_ERR(h_file); + else { + struct au_cp_generic cpg = { + .dentry = dentry, + .bdst = a->bdst, + .bsrc = -1, + .len = -1, + .pin = &a->pin, + .flags = AuCpup_KEEPLINO + }; + err = au_sio_cpup_simple(&cpg); + au_h_open_post(dentry, a->bsrc, h_file); + if (!err) { + dput(a->h_path.dentry); + a->h_path.dentry = au_h_dptr(dentry, a->bdst); + } else + au_set_h_dptr(dentry, a->bdst, + a->h_path.dentry); + } + spin_lock(&dentry->d_lock); + dentry->d_inode = NULL; /* restore */ + spin_unlock(&dentry->d_lock); + AuDbg("temporary d_inode...done\n"); + au_set_h_dptr(dentry, a->bsrc, NULL); + au_set_dbbot(dentry, bbot); + } else { + /* the inode of src_dentry already exists on a.bdst branch */ + h_src_dentry = d_find_alias(h_inode); + if (!h_src_dentry && au_plink_test(inode)) { + plink = 1; + h_src_dentry = au_plink_lkup(inode, a->bdst); + err = PTR_ERR(h_src_dentry); + if (IS_ERR(h_src_dentry)) + goto out; + + if (unlikely(d_is_negative(h_src_dentry))) { + dput(h_src_dentry); + h_src_dentry = NULL; + } + + } + if (h_src_dentry) { + delegated = NULL; + err = vfsub_link(h_src_dentry, au_pinned_h_dir(&a->pin), + &a->h_path, &delegated); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal link\n"); + iput(delegated); + } + dput(h_src_dentry); + } else { + AuIOErr("no dentry found for hi%lu on b%d\n", + h_inode->i_ino, a->bdst); + err = -EIO; + } + } + + if (!err && !plink) + au_plink_append(inode, a->bdst, a->h_path.dentry); + +out: + AuTraceErr(err); + return err; +} + +int aufs_link(struct dentry *src_dentry, struct inode *dir, + struct dentry *dentry) +{ + int err, rerr; + struct au_dtime dt; + struct au_link_args *a; + struct dentry *wh_dentry, *h_src_dentry; + struct inode *inode, *delegated; + struct super_block *sb; + struct au_wr_dir_args wr_dir_args = { + /* .force_btgt = -1, */ + .flags = AuWrDir_ADD_ENTRY + }; + + IMustLock(dir); + inode = d_inode(src_dentry); + IMustLock(inode); + + err = -ENOMEM; + a = kzalloc(sizeof(*a), GFP_NOFS); + if (unlikely(!a)) + goto out; + + a->parent = dentry->d_parent; /* dir inode is locked */ + err = aufs_read_and_write_lock2(dentry, src_dentry, + AuLock_NOPLM | AuLock_GEN); + if (unlikely(err)) + goto out_kfree; + err = au_d_linkable(src_dentry); + if (unlikely(err)) + goto out_unlock; + err = au_d_may_add(dentry); + if (unlikely(err)) + goto out_unlock; + + a->src_parent = dget_parent(src_dentry); + wr_dir_args.force_btgt = au_ibtop(inode); + + di_write_lock_parent(a->parent); + wr_dir_args.force_btgt = au_wbr(dentry, wr_dir_args.force_btgt); + wh_dentry = lock_hdir_lkup_wh(dentry, &dt, src_dentry, &a->pin, + &wr_dir_args); + err = PTR_ERR(wh_dentry); + if (IS_ERR(wh_dentry)) + goto out_parent; + + err = 0; + sb = dentry->d_sb; + a->bdst = au_dbtop(dentry); + a->h_path.dentry = au_h_dptr(dentry, a->bdst); + a->h_path.mnt = au_sbr_mnt(sb, a->bdst); + a->bsrc = au_ibtop(inode); + h_src_dentry = au_h_d_alias(src_dentry, a->bsrc); + if (!h_src_dentry && au_di(src_dentry)->di_tmpfile) + h_src_dentry = dget(au_hi_wh(inode, a->bsrc)); + if (!h_src_dentry) { + a->bsrc = au_dbtop(src_dentry); + h_src_dentry = au_h_d_alias(src_dentry, a->bsrc); + AuDebugOn(!h_src_dentry); + } else if (IS_ERR(h_src_dentry)) { + err = PTR_ERR(h_src_dentry); + goto out_parent; + } + + /* + * aufs doesn't touch the credential so + * security_dentry_create_files_as() is unnecrssary. + */ + if (au_opt_test(au_mntflags(sb), PLINK)) { + if (a->bdst < a->bsrc + /* && h_src_dentry->d_sb != a->h_path.dentry->d_sb */) + err = au_cpup_or_link(src_dentry, dentry, a); + else { + delegated = NULL; + err = vfsub_link(h_src_dentry, au_pinned_h_dir(&a->pin), + &a->h_path, &delegated); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal link\n"); + iput(delegated); + } + } + dput(h_src_dentry); + } else { + /* + * copyup src_dentry to the branch we process, + * and then link(2) to it. + */ + dput(h_src_dentry); + if (a->bdst < a->bsrc + /* && h_src_dentry->d_sb != a->h_path.dentry->d_sb */) { + au_unpin(&a->pin); + di_write_unlock(a->parent); + err = au_cpup_before_link(src_dentry, a); + di_write_lock_parent(a->parent); + if (!err) + err = au_pin(&a->pin, dentry, a->bdst, + au_opt_udba(sb), + AuPin_DI_LOCKED | AuPin_MNT_WRITE); + if (unlikely(err)) + goto out_wh; + } + if (!err) { + h_src_dentry = au_h_dptr(src_dentry, a->bdst); + err = -ENOENT; + if (h_src_dentry && d_is_positive(h_src_dentry)) { + delegated = NULL; + err = vfsub_link(h_src_dentry, + au_pinned_h_dir(&a->pin), + &a->h_path, &delegated); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry" + " for NFSv4 delegation" + " for an internal link\n"); + iput(delegated); + } + } + } + } + if (unlikely(err)) + goto out_unpin; + + if (wh_dentry) { + a->h_path.dentry = wh_dentry; + err = au_wh_unlink_dentry(au_pinned_h_dir(&a->pin), &a->h_path, + dentry); + if (unlikely(err)) + goto out_revert; + } + + au_dir_ts(dir, a->bdst); + inode_inc_iversion(dir); + inc_nlink(inode); + inode->i_ctime = dir->i_ctime; + d_instantiate(dentry, au_igrab(inode)); + if (d_unhashed(a->h_path.dentry)) + /* some filesystem calls d_drop() */ + d_drop(dentry); + /* some filesystems consume an inode even hardlink */ + au_fhsm_wrote(sb, a->bdst, /*force*/0); + goto out_unpin; /* success */ + +out_revert: + /* no delegation since it is just created */ + rerr = vfsub_unlink(au_pinned_h_dir(&a->pin), &a->h_path, + /*delegated*/NULL, /*force*/0); + if (unlikely(rerr)) { + AuIOErr("%pd reverting failed(%d, %d)\n", dentry, err, rerr); + err = -EIO; + } + au_dtime_revert(&dt); +out_unpin: + au_unpin(&a->pin); +out_wh: + dput(wh_dentry); +out_parent: + di_write_unlock(a->parent); + dput(a->src_parent); +out_unlock: + if (unlikely(err)) { + au_update_dbtop(dentry); + d_drop(dentry); + } + aufs_read_and_write_unlock2(dentry, src_dentry); +out_kfree: + kfree(a); +out: + AuTraceErr(err); + return err; +} + +int aufs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) +{ + int err, rerr; + aufs_bindex_t bindex; + unsigned char diropq; + struct path h_path; + struct dentry *wh_dentry, *parent, *opq_dentry; + struct inode *h_inode; + struct super_block *sb; + struct { + struct au_pin pin; + struct au_dtime dt; + } *a; /* reduce the stack usage */ + struct au_wr_dir_args wr_dir_args = { + .force_btgt = -1, + .flags = AuWrDir_ADD_ENTRY | AuWrDir_ISDIR + }; + + IMustLock(dir); + + err = -ENOMEM; + a = kmalloc(sizeof(*a), GFP_NOFS); + if (unlikely(!a)) + goto out; + + err = aufs_read_lock(dentry, AuLock_DW | AuLock_GEN); + if (unlikely(err)) + goto out_free; + err = au_d_may_add(dentry); + if (unlikely(err)) + goto out_unlock; + + parent = dentry->d_parent; /* dir inode is locked */ + di_write_lock_parent(parent); + wh_dentry = lock_hdir_lkup_wh(dentry, &a->dt, /*src_dentry*/NULL, + &a->pin, &wr_dir_args); + err = PTR_ERR(wh_dentry); + if (IS_ERR(wh_dentry)) + goto out_parent; + + sb = dentry->d_sb; + bindex = au_dbtop(dentry); + h_path.dentry = au_h_dptr(dentry, bindex); + h_path.mnt = au_sbr_mnt(sb, bindex); + err = vfsub_mkdir(au_pinned_h_dir(&a->pin), &h_path, mode); + if (unlikely(err)) + goto out_unpin; + + /* make the dir opaque */ + diropq = 0; + h_inode = d_inode(h_path.dentry); + if (wh_dentry + || au_opt_test(au_mntflags(sb), ALWAYS_DIROPQ)) { + inode_lock_nested(h_inode, AuLsc_I_CHILD); + opq_dentry = au_diropq_create(dentry, bindex); + inode_unlock(h_inode); + err = PTR_ERR(opq_dentry); + if (IS_ERR(opq_dentry)) + goto out_dir; + dput(opq_dentry); + diropq = 1; + } + + err = epilog(dir, bindex, wh_dentry, dentry); + if (!err) { + inc_nlink(dir); + goto out_unpin; /* success */ + } + + /* revert */ + if (diropq) { + AuLabel(revert opq); + inode_lock_nested(h_inode, AuLsc_I_CHILD); + rerr = au_diropq_remove(dentry, bindex); + inode_unlock(h_inode); + if (rerr) { + AuIOErr("%pd reverting diropq failed(%d, %d)\n", + dentry, err, rerr); + err = -EIO; + } + } + +out_dir: + AuLabel(revert dir); + rerr = vfsub_rmdir(au_pinned_h_dir(&a->pin), &h_path); + if (rerr) { + AuIOErr("%pd reverting dir failed(%d, %d)\n", + dentry, err, rerr); + err = -EIO; + } + au_dtime_revert(&a->dt); +out_unpin: + au_unpin(&a->pin); + dput(wh_dentry); +out_parent: + di_write_unlock(parent); +out_unlock: + if (unlikely(err)) { + au_update_dbtop(dentry); + d_drop(dentry); + } + aufs_read_unlock(dentry, AuLock_DW); +out_free: + kfree(a); +out: + return err; +} diff --git a/fs/aufs/i_op_del.c b/fs/aufs/i_op_del.c new file mode 100644 index 00000000000..9c49efa16d5 --- /dev/null +++ b/fs/aufs/i_op_del.c @@ -0,0 +1,512 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * inode operations (del entry) + */ + +#include "aufs.h" + +/* + * decide if a new whiteout for @dentry is necessary or not. + * when it is necessary, prepare the parent dir for the upper branch whose + * branch index is @bcpup for creation. the actual creation of the whiteout will + * be done by caller. + * return value: + * 0: wh is unnecessary + * plus: wh is necessary + * minus: error + */ +int au_wr_dir_need_wh(struct dentry *dentry, int isdir, aufs_bindex_t *bcpup) +{ + int need_wh, err; + aufs_bindex_t btop; + struct super_block *sb; + + sb = dentry->d_sb; + btop = au_dbtop(dentry); + if (*bcpup < 0) { + *bcpup = btop; + if (au_test_ro(sb, btop, d_inode(dentry))) { + err = AuWbrCopyup(au_sbi(sb), dentry); + *bcpup = err; + if (unlikely(err < 0)) + goto out; + } + } else + AuDebugOn(btop < *bcpup + || au_test_ro(sb, *bcpup, d_inode(dentry))); + AuDbg("bcpup %d, btop %d\n", *bcpup, btop); + + if (*bcpup != btop) { + err = au_cpup_dirs(dentry, *bcpup); + if (unlikely(err)) + goto out; + need_wh = 1; + } else { + struct au_dinfo *dinfo, *tmp; + + need_wh = -ENOMEM; + dinfo = au_di(dentry); + tmp = au_di_alloc(sb, AuLsc_DI_TMP); + if (tmp) { + au_di_cp(tmp, dinfo); + au_di_swap(tmp, dinfo); + /* returns the number of positive dentries */ + need_wh = au_lkup_dentry(dentry, btop + 1, + /* AuLkup_IGNORE_PERM */ 0); + au_di_swap(tmp, dinfo); + au_rw_write_unlock(&tmp->di_rwsem); + au_di_free(tmp); + } + } + AuDbg("need_wh %d\n", need_wh); + err = need_wh; + +out: + return err; +} + +/* + * simple tests for the del-entry operations. + * following the checks in vfs, plus the parent-child relationship. + */ +int au_may_del(struct dentry *dentry, aufs_bindex_t bindex, + struct dentry *h_parent, int isdir) +{ + int err; + umode_t h_mode; + struct dentry *h_dentry, *h_latest; + struct inode *h_inode; + + h_dentry = au_h_dptr(dentry, bindex); + if (d_really_is_positive(dentry)) { + err = -ENOENT; + if (unlikely(d_is_negative(h_dentry))) + goto out; + h_inode = d_inode(h_dentry); + if (unlikely(!h_inode->i_nlink)) + goto out; + + h_mode = h_inode->i_mode; + if (!isdir) { + err = -EISDIR; + if (unlikely(S_ISDIR(h_mode))) + goto out; + } else if (unlikely(!S_ISDIR(h_mode))) { + err = -ENOTDIR; + goto out; + } + } else { + /* rename(2) case */ + err = -EIO; + if (unlikely(d_is_positive(h_dentry))) + goto out; + } + + err = -ENOENT; + /* expected parent dir is locked */ + if (unlikely(h_parent != h_dentry->d_parent)) + goto out; + err = 0; + + /* + * rmdir a dir may break the consistency on some filesystem. + * let's try heavy test. + */ + err = -EACCES; + if (unlikely(!au_opt_test(au_mntflags(dentry->d_sb), DIRPERM1) + && au_test_h_perm(d_inode(h_parent), + MAY_EXEC | MAY_WRITE))) + goto out; + + h_latest = au_sio_lkup_one(&dentry->d_name, h_parent); + err = -EIO; + if (IS_ERR(h_latest)) + goto out; + if (h_latest == h_dentry) + err = 0; + dput(h_latest); + +out: + return err; +} + +/* + * decide the branch where we operate for @dentry. the branch index will be set + * @rbcpup. after diciding it, 'pin' it and store the timestamps of the parent + * dir for reverting. + * when a new whiteout is necessary, create it. + */ +static struct dentry* +lock_hdir_create_wh(struct dentry *dentry, int isdir, aufs_bindex_t *rbcpup, + struct au_dtime *dt, struct au_pin *pin) +{ + struct dentry *wh_dentry; + struct super_block *sb; + struct path h_path; + int err, need_wh; + unsigned int udba; + aufs_bindex_t bcpup; + + need_wh = au_wr_dir_need_wh(dentry, isdir, rbcpup); + wh_dentry = ERR_PTR(need_wh); + if (unlikely(need_wh < 0)) + goto out; + + sb = dentry->d_sb; + udba = au_opt_udba(sb); + bcpup = *rbcpup; + err = au_pin(pin, dentry, bcpup, udba, + AuPin_DI_LOCKED | AuPin_MNT_WRITE); + wh_dentry = ERR_PTR(err); + if (unlikely(err)) + goto out; + + h_path.dentry = au_pinned_h_parent(pin); + if (udba != AuOpt_UDBA_NONE + && au_dbtop(dentry) == bcpup) { + err = au_may_del(dentry, bcpup, h_path.dentry, isdir); + wh_dentry = ERR_PTR(err); + if (unlikely(err)) + goto out_unpin; + } + + h_path.mnt = au_sbr_mnt(sb, bcpup); + au_dtime_store(dt, au_pinned_parent(pin), &h_path); + wh_dentry = NULL; + if (!need_wh) + goto out; /* success, no need to create whiteout */ + + wh_dentry = au_wh_create(dentry, bcpup, h_path.dentry); + if (IS_ERR(wh_dentry)) + goto out_unpin; + + /* returns with the parent is locked and wh_dentry is dget-ed */ + goto out; /* success */ + +out_unpin: + au_unpin(pin); +out: + return wh_dentry; +} + +/* + * when removing a dir, rename it to a unique temporary whiteout-ed name first + * in order to be revertible and save time for removing many child whiteouts + * under the dir. + * returns 1 when there are too many child whiteout and caller should remove + * them asynchronously. returns 0 when the number of children is enough small to + * remove now or the branch fs is a remote fs. + * otherwise return an error. + */ +static int renwh_and_rmdir(struct dentry *dentry, aufs_bindex_t bindex, + struct au_nhash *whlist, struct inode *dir) +{ + int rmdir_later, err, dirwh; + struct dentry *h_dentry; + struct super_block *sb; + struct inode *inode; + + sb = dentry->d_sb; + SiMustAnyLock(sb); + h_dentry = au_h_dptr(dentry, bindex); + err = au_whtmp_ren(h_dentry, au_sbr(sb, bindex)); + if (unlikely(err)) + goto out; + + /* stop monitoring */ + inode = d_inode(dentry); + au_hn_free(au_hi(inode, bindex)); + + if (!au_test_fs_remote(h_dentry->d_sb)) { + dirwh = au_sbi(sb)->si_dirwh; + rmdir_later = (dirwh <= 1); + if (!rmdir_later) + rmdir_later = au_nhash_test_longer_wh(whlist, bindex, + dirwh); + if (rmdir_later) + return rmdir_later; + } + + err = au_whtmp_rmdir(dir, bindex, h_dentry, whlist); + if (unlikely(err)) { + AuIOErr("rmdir %pd, b%d failed, %d. ignored\n", + h_dentry, bindex, err); + err = 0; + } + +out: + AuTraceErr(err); + return err; +} + +/* + * final procedure for deleting a entry. + * maintain dentry and iattr. + */ +static void epilog(struct inode *dir, struct dentry *dentry, + aufs_bindex_t bindex) +{ + struct inode *inode; + + inode = d_inode(dentry); + d_drop(dentry); + inode->i_ctime = dir->i_ctime; + + au_dir_ts(dir, bindex); + inode_inc_iversion(dir); +} + +/* + * when an error happened, remove the created whiteout and revert everything. + */ +static int do_revert(int err, struct inode *dir, aufs_bindex_t bindex, + aufs_bindex_t bwh, struct dentry *wh_dentry, + struct dentry *dentry, struct au_dtime *dt) +{ + int rerr; + struct path h_path = { + .dentry = wh_dentry, + .mnt = au_sbr_mnt(dir->i_sb, bindex) + }; + + rerr = au_wh_unlink_dentry(au_h_iptr(dir, bindex), &h_path, dentry); + if (!rerr) { + au_set_dbwh(dentry, bwh); + au_dtime_revert(dt); + return 0; + } + + AuIOErr("%pd reverting whiteout failed(%d, %d)\n", dentry, err, rerr); + return -EIO; +} + +/* ---------------------------------------------------------------------- */ + +int aufs_unlink(struct inode *dir, struct dentry *dentry) +{ + int err; + aufs_bindex_t bwh, bindex, btop; + struct inode *inode, *h_dir, *delegated; + struct dentry *parent, *wh_dentry; + /* to reuduce stack size */ + struct { + struct au_dtime dt; + struct au_pin pin; + struct path h_path; + } *a; + + IMustLock(dir); + + err = -ENOMEM; + a = kmalloc(sizeof(*a), GFP_NOFS); + if (unlikely(!a)) + goto out; + + err = aufs_read_lock(dentry, AuLock_DW | AuLock_GEN); + if (unlikely(err)) + goto out_free; + err = au_d_hashed_positive(dentry); + if (unlikely(err)) + goto out_unlock; + inode = d_inode(dentry); + IMustLock(inode); + err = -EISDIR; + if (unlikely(d_is_dir(dentry))) + goto out_unlock; /* possible? */ + + btop = au_dbtop(dentry); + bwh = au_dbwh(dentry); + bindex = -1; + parent = dentry->d_parent; /* dir inode is locked */ + di_write_lock_parent(parent); + wh_dentry = lock_hdir_create_wh(dentry, /*isdir*/0, &bindex, &a->dt, + &a->pin); + err = PTR_ERR(wh_dentry); + if (IS_ERR(wh_dentry)) + goto out_parent; + + a->h_path.mnt = au_sbr_mnt(dentry->d_sb, btop); + a->h_path.dentry = au_h_dptr(dentry, btop); + dget(a->h_path.dentry); + if (bindex == btop) { + h_dir = au_pinned_h_dir(&a->pin); + delegated = NULL; + err = vfsub_unlink(h_dir, &a->h_path, &delegated, /*force*/0); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal unlink\n"); + iput(delegated); + } + } else { + /* dir inode is locked */ + h_dir = d_inode(wh_dentry->d_parent); + IMustLock(h_dir); + err = 0; + } + + if (!err) { + vfsub_drop_nlink(inode); + epilog(dir, dentry, bindex); + + /* update target timestamps */ + if (bindex == btop) { + vfsub_update_h_iattr(&a->h_path, /*did*/NULL); + /*ignore*/ + inode->i_ctime = d_inode(a->h_path.dentry)->i_ctime; + } else + /* todo: this timestamp may be reverted later */ + inode->i_ctime = h_dir->i_ctime; + goto out_unpin; /* success */ + } + + /* revert */ + if (wh_dentry) { + int rerr; + + rerr = do_revert(err, dir, bindex, bwh, wh_dentry, dentry, + &a->dt); + if (rerr) + err = rerr; + } + +out_unpin: + au_unpin(&a->pin); + dput(wh_dentry); + dput(a->h_path.dentry); +out_parent: + di_write_unlock(parent); +out_unlock: + aufs_read_unlock(dentry, AuLock_DW); +out_free: + kfree(a); +out: + return err; +} + +int aufs_rmdir(struct inode *dir, struct dentry *dentry) +{ + int err, rmdir_later; + aufs_bindex_t bwh, bindex, btop; + struct inode *inode; + struct dentry *parent, *wh_dentry, *h_dentry; + struct au_whtmp_rmdir *args; + /* to reuduce stack size */ + struct { + struct au_dtime dt; + struct au_pin pin; + } *a; + + IMustLock(dir); + + err = -ENOMEM; + a = kmalloc(sizeof(*a), GFP_NOFS); + if (unlikely(!a)) + goto out; + + err = aufs_read_lock(dentry, AuLock_DW | AuLock_FLUSH | AuLock_GEN); + if (unlikely(err)) + goto out_free; + err = au_alive_dir(dentry); + if (unlikely(err)) + goto out_unlock; + inode = d_inode(dentry); + IMustLock(inode); + err = -ENOTDIR; + if (unlikely(!d_is_dir(dentry))) + goto out_unlock; /* possible? */ + + err = -ENOMEM; + args = au_whtmp_rmdir_alloc(dir->i_sb, GFP_NOFS); + if (unlikely(!args)) + goto out_unlock; + + parent = dentry->d_parent; /* dir inode is locked */ + di_write_lock_parent(parent); + err = au_test_empty(dentry, &args->whlist); + if (unlikely(err)) + goto out_parent; + + btop = au_dbtop(dentry); + bwh = au_dbwh(dentry); + bindex = -1; + wh_dentry = lock_hdir_create_wh(dentry, /*isdir*/1, &bindex, &a->dt, + &a->pin); + err = PTR_ERR(wh_dentry); + if (IS_ERR(wh_dentry)) + goto out_parent; + + h_dentry = au_h_dptr(dentry, btop); + dget(h_dentry); + rmdir_later = 0; + if (bindex == btop) { + err = renwh_and_rmdir(dentry, btop, &args->whlist, dir); + if (err > 0) { + rmdir_later = err; + err = 0; + } + } else { + /* stop monitoring */ + au_hn_free(au_hi(inode, btop)); + + /* dir inode is locked */ + IMustLock(d_inode(wh_dentry->d_parent)); + err = 0; + } + + if (!err) { + vfsub_dead_dir(inode); + au_set_dbdiropq(dentry, -1); + epilog(dir, dentry, bindex); + + if (rmdir_later) { + au_whtmp_kick_rmdir(dir, btop, h_dentry, args); + args = NULL; + } + + goto out_unpin; /* success */ + } + + /* revert */ + AuLabel(revert); + if (wh_dentry) { + int rerr; + + rerr = do_revert(err, dir, bindex, bwh, wh_dentry, dentry, + &a->dt); + if (rerr) + err = rerr; + } + +out_unpin: + au_unpin(&a->pin); + dput(wh_dentry); + dput(h_dentry); +out_parent: + di_write_unlock(parent); + if (args) + au_whtmp_rmdir_free(args); +out_unlock: + aufs_read_unlock(dentry, AuLock_DW); +out_free: + kfree(a); +out: + AuTraceErr(err); + return err; +} diff --git a/fs/aufs/i_op_ren.c b/fs/aufs/i_op_ren.c new file mode 100644 index 00000000000..beb59d1d0a2 --- /dev/null +++ b/fs/aufs/i_op_ren.c @@ -0,0 +1,1247 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * inode operation (rename entry) + * todo: this is crazy monster + */ + +#include "aufs.h" + +enum { AuSRC, AuDST, AuSrcDst }; +enum { AuPARENT, AuCHILD, AuParentChild }; + +#define AuRen_ISDIR_SRC 1 +#define AuRen_ISDIR_DST (1 << 1) +#define AuRen_ISSAMEDIR (1 << 2) +#define AuRen_WHSRC (1 << 3) +#define AuRen_WHDST (1 << 4) +#define AuRen_MNT_WRITE (1 << 5) +#define AuRen_DT_DSTDIR (1 << 6) +#define AuRen_DIROPQ_SRC (1 << 7) +#define AuRen_DIROPQ_DST (1 << 8) +#define AuRen_DIRREN (1 << 9) +#define AuRen_DROPPED_SRC (1 << 10) +#define AuRen_DROPPED_DST (1 << 11) +#define au_ftest_ren(flags, name) ((flags) & AuRen_##name) +#define au_fset_ren(flags, name) \ + do { (flags) |= AuRen_##name; } while (0) +#define au_fclr_ren(flags, name) \ + do { (flags) &= ~AuRen_##name; } while (0) + +#ifndef CONFIG_AUFS_DIRREN +#undef AuRen_DIRREN +#define AuRen_DIRREN 0 +#endif + +struct au_ren_args { + struct { + struct dentry *dentry, *h_dentry, *parent, *h_parent, + *wh_dentry; + struct inode *dir, *inode; + struct au_hinode *hdir, *hinode; + struct au_dtime dt[AuParentChild]; + aufs_bindex_t btop, bdiropq; + } sd[AuSrcDst]; + +#define src_dentry sd[AuSRC].dentry +#define src_dir sd[AuSRC].dir +#define src_inode sd[AuSRC].inode +#define src_h_dentry sd[AuSRC].h_dentry +#define src_parent sd[AuSRC].parent +#define src_h_parent sd[AuSRC].h_parent +#define src_wh_dentry sd[AuSRC].wh_dentry +#define src_hdir sd[AuSRC].hdir +#define src_hinode sd[AuSRC].hinode +#define src_h_dir sd[AuSRC].hdir->hi_inode +#define src_dt sd[AuSRC].dt +#define src_btop sd[AuSRC].btop +#define src_bdiropq sd[AuSRC].bdiropq + +#define dst_dentry sd[AuDST].dentry +#define dst_dir sd[AuDST].dir +#define dst_inode sd[AuDST].inode +#define dst_h_dentry sd[AuDST].h_dentry +#define dst_parent sd[AuDST].parent +#define dst_h_parent sd[AuDST].h_parent +#define dst_wh_dentry sd[AuDST].wh_dentry +#define dst_hdir sd[AuDST].hdir +#define dst_hinode sd[AuDST].hinode +#define dst_h_dir sd[AuDST].hdir->hi_inode +#define dst_dt sd[AuDST].dt +#define dst_btop sd[AuDST].btop +#define dst_bdiropq sd[AuDST].bdiropq + + struct dentry *h_trap; + struct au_branch *br; + struct path h_path; + struct au_nhash whlist; + aufs_bindex_t btgt, src_bwh; + + struct { + unsigned short auren_flags; + unsigned char flags; /* syscall parameter */ + unsigned char exchange; + } __packed; + + struct au_whtmp_rmdir *thargs; + struct dentry *h_dst; + struct au_hinode *h_root; +}; + +/* ---------------------------------------------------------------------- */ + +/* + * functions for reverting. + * when an error happened in a single rename systemcall, we should revert + * everything as if nothing happened. + * we don't need to revert the copied-up/down the parent dir since they are + * harmless. + */ + +#define RevertFailure(fmt, ...) do { \ + AuIOErr("revert failure: " fmt " (%d, %d)\n", \ + ##__VA_ARGS__, err, rerr); \ + err = -EIO; \ +} while (0) + +static void au_ren_do_rev_diropq(int err, struct au_ren_args *a, int idx) +{ + int rerr; + struct dentry *d; +#define src_or_dst(member) a->sd[idx].member + + d = src_or_dst(dentry); /* {src,dst}_dentry */ + au_hn_inode_lock_nested(src_or_dst(hinode), AuLsc_I_CHILD); + rerr = au_diropq_remove(d, a->btgt); + au_hn_inode_unlock(src_or_dst(hinode)); + au_set_dbdiropq(d, src_or_dst(bdiropq)); + if (rerr) + RevertFailure("remove diropq %pd", d); + +#undef src_or_dst_ +} + +static void au_ren_rev_diropq(int err, struct au_ren_args *a) +{ + if (au_ftest_ren(a->auren_flags, DIROPQ_SRC)) + au_ren_do_rev_diropq(err, a, AuSRC); + if (au_ftest_ren(a->auren_flags, DIROPQ_DST)) + au_ren_do_rev_diropq(err, a, AuDST); +} + +static void au_ren_rev_rename(int err, struct au_ren_args *a) +{ + int rerr; + struct inode *delegated; + + a->h_path.dentry = vfsub_lkup_one(&a->src_dentry->d_name, + a->src_h_parent); + rerr = PTR_ERR(a->h_path.dentry); + if (IS_ERR(a->h_path.dentry)) { + RevertFailure("lkup one %pd", a->src_dentry); + return; + } + + delegated = NULL; + rerr = vfsub_rename(a->dst_h_dir, + au_h_dptr(a->src_dentry, a->btgt), + a->src_h_dir, &a->h_path, &delegated, a->flags); + if (unlikely(rerr == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal rename\n"); + iput(delegated); + } + d_drop(a->h_path.dentry); + dput(a->h_path.dentry); + /* au_set_h_dptr(a->src_dentry, a->btgt, NULL); */ + if (rerr) + RevertFailure("rename %pd", a->src_dentry); +} + +static void au_ren_rev_whtmp(int err, struct au_ren_args *a) +{ + int rerr; + struct inode *delegated; + + a->h_path.dentry = vfsub_lkup_one(&a->dst_dentry->d_name, + a->dst_h_parent); + rerr = PTR_ERR(a->h_path.dentry); + if (IS_ERR(a->h_path.dentry)) { + RevertFailure("lkup one %pd", a->dst_dentry); + return; + } + if (d_is_positive(a->h_path.dentry)) { + d_drop(a->h_path.dentry); + dput(a->h_path.dentry); + return; + } + + delegated = NULL; + rerr = vfsub_rename(a->dst_h_dir, a->h_dst, a->dst_h_dir, &a->h_path, + &delegated, a->flags); + if (unlikely(rerr == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal rename\n"); + iput(delegated); + } + d_drop(a->h_path.dentry); + dput(a->h_path.dentry); + if (!rerr) + au_set_h_dptr(a->dst_dentry, a->btgt, dget(a->h_dst)); + else + RevertFailure("rename %pd", a->h_dst); +} + +static void au_ren_rev_whsrc(int err, struct au_ren_args *a) +{ + int rerr; + + a->h_path.dentry = a->src_wh_dentry; + rerr = au_wh_unlink_dentry(a->src_h_dir, &a->h_path, a->src_dentry); + au_set_dbwh(a->src_dentry, a->src_bwh); + if (rerr) + RevertFailure("unlink %pd", a->src_wh_dentry); +} +#undef RevertFailure + +/* ---------------------------------------------------------------------- */ + +/* + * when we have to copyup the renaming entry, do it with the rename-target name + * in order to minimize the cost (the later actual rename is unnecessary). + * otherwise rename it on the target branch. + */ +static int au_ren_or_cpup(struct au_ren_args *a) +{ + int err; + struct dentry *d; + struct inode *delegated; + + d = a->src_dentry; + if (au_dbtop(d) == a->btgt) { + a->h_path.dentry = a->dst_h_dentry; + AuDebugOn(au_dbtop(d) != a->btgt); + delegated = NULL; + err = vfsub_rename(a->src_h_dir, au_h_dptr(d, a->btgt), + a->dst_h_dir, &a->h_path, &delegated, + a->flags); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal rename\n"); + iput(delegated); + } + } else + BUG(); + + if (!err && a->h_dst) + /* it will be set to dinfo later */ + dget(a->h_dst); + + return err; +} + +/* cf. aufs_rmdir() */ +static int au_ren_del_whtmp(struct au_ren_args *a) +{ + int err; + struct inode *dir; + + dir = a->dst_dir; + SiMustAnyLock(dir->i_sb); + if (!au_nhash_test_longer_wh(&a->whlist, a->btgt, + au_sbi(dir->i_sb)->si_dirwh) + || au_test_fs_remote(a->h_dst->d_sb)) { + err = au_whtmp_rmdir(dir, a->btgt, a->h_dst, &a->whlist); + if (unlikely(err)) + pr_warn("failed removing whtmp dir %pd (%d), " + "ignored.\n", a->h_dst, err); + } else { + au_nhash_wh_free(&a->thargs->whlist); + a->thargs->whlist = a->whlist; + a->whlist.nh_num = 0; + au_whtmp_kick_rmdir(dir, a->btgt, a->h_dst, a->thargs); + dput(a->h_dst); + a->thargs = NULL; + } + + return 0; +} + +/* make it 'opaque' dir. */ +static int au_ren_do_diropq(struct au_ren_args *a, int idx) +{ + int err; + struct dentry *d, *diropq; +#define src_or_dst(member) a->sd[idx].member + + err = 0; + d = src_or_dst(dentry); /* {src,dst}_dentry */ + src_or_dst(bdiropq) = au_dbdiropq(d); + src_or_dst(hinode) = au_hi(src_or_dst(inode), a->btgt); + au_hn_inode_lock_nested(src_or_dst(hinode), AuLsc_I_CHILD); + diropq = au_diropq_create(d, a->btgt); + au_hn_inode_unlock(src_or_dst(hinode)); + if (IS_ERR(diropq)) + err = PTR_ERR(diropq); + else + dput(diropq); + +#undef src_or_dst_ + return err; +} + +static int au_ren_diropq(struct au_ren_args *a) +{ + int err; + unsigned char always; + struct dentry *d; + + err = 0; + d = a->dst_dentry; /* already renamed on the branch */ + always = !!au_opt_test(au_mntflags(d->d_sb), ALWAYS_DIROPQ); + if (au_ftest_ren(a->auren_flags, ISDIR_SRC) + && !au_ftest_ren(a->auren_flags, DIRREN) + && a->btgt != au_dbdiropq(a->src_dentry) + && (a->dst_wh_dentry + || a->btgt <= au_dbdiropq(d) + /* hide the lower to keep xino */ + /* the lowers may not be a dir, but we hide them anyway */ + || a->btgt < au_dbbot(d) + || always)) { + AuDbg("here\n"); + err = au_ren_do_diropq(a, AuSRC); + if (unlikely(err)) + goto out; + au_fset_ren(a->auren_flags, DIROPQ_SRC); + } + if (!a->exchange) + goto out; /* success */ + + d = a->src_dentry; /* already renamed on the branch */ + if (au_ftest_ren(a->auren_flags, ISDIR_DST) + && a->btgt != au_dbdiropq(a->dst_dentry) + && (a->btgt < au_dbdiropq(d) + || a->btgt < au_dbbot(d) + || always)) { + AuDbgDentry(a->src_dentry); + AuDbgDentry(a->dst_dentry); + err = au_ren_do_diropq(a, AuDST); + if (unlikely(err)) + goto out_rev_src; + au_fset_ren(a->auren_flags, DIROPQ_DST); + } + goto out; /* success */ + +out_rev_src: + AuDbg("err %d, reverting src\n", err); + au_ren_rev_diropq(err, a); +out: + return err; +} + +static int do_rename(struct au_ren_args *a) +{ + int err; + struct dentry *d, *h_d; + + if (!a->exchange) { + /* prepare workqueue args for asynchronous rmdir */ + h_d = a->dst_h_dentry; + if (au_ftest_ren(a->auren_flags, ISDIR_DST) + /* && !au_ftest_ren(a->auren_flags, DIRREN) */ + && d_is_positive(h_d)) { + err = -ENOMEM; + a->thargs = au_whtmp_rmdir_alloc(a->src_dentry->d_sb, + GFP_NOFS); + if (unlikely(!a->thargs)) + goto out; + a->h_dst = dget(h_d); + } + + /* create whiteout for src_dentry */ + if (au_ftest_ren(a->auren_flags, WHSRC)) { + a->src_bwh = au_dbwh(a->src_dentry); + AuDebugOn(a->src_bwh >= 0); + a->src_wh_dentry = au_wh_create(a->src_dentry, a->btgt, + a->src_h_parent); + err = PTR_ERR(a->src_wh_dentry); + if (IS_ERR(a->src_wh_dentry)) + goto out_thargs; + } + + /* lookup whiteout for dentry */ + if (au_ftest_ren(a->auren_flags, WHDST)) { + h_d = au_wh_lkup(a->dst_h_parent, + &a->dst_dentry->d_name, a->br); + err = PTR_ERR(h_d); + if (IS_ERR(h_d)) + goto out_whsrc; + if (d_is_negative(h_d)) + dput(h_d); + else + a->dst_wh_dentry = h_d; + } + + /* rename dentry to tmpwh */ + if (a->thargs) { + err = au_whtmp_ren(a->dst_h_dentry, a->br); + if (unlikely(err)) + goto out_whdst; + + d = a->dst_dentry; + au_set_h_dptr(d, a->btgt, NULL); + err = au_lkup_neg(d, a->btgt, /*wh*/0); + if (unlikely(err)) + goto out_whtmp; + a->dst_h_dentry = au_h_dptr(d, a->btgt); + } + } + + BUG_ON(d_is_positive(a->dst_h_dentry) && a->src_btop != a->btgt); +#if 0 + BUG_ON(!au_ftest_ren(a->auren_flags, DIRREN) + && d_is_positive(a->dst_h_dentry) + && a->src_btop != a->btgt); +#endif + + /* rename by vfs_rename or cpup */ + err = au_ren_or_cpup(a); + if (unlikely(err)) + /* leave the copied-up one */ + goto out_whtmp; + + /* make dir opaque */ + err = au_ren_diropq(a); + if (unlikely(err)) + goto out_rename; + + /* update target timestamps */ + if (a->exchange) { + AuDebugOn(au_dbtop(a->dst_dentry) != a->btgt); + a->h_path.dentry = au_h_dptr(a->dst_dentry, a->btgt); + vfsub_update_h_iattr(&a->h_path, /*did*/NULL); /*ignore*/ + a->dst_inode->i_ctime = d_inode(a->h_path.dentry)->i_ctime; + } + AuDebugOn(au_dbtop(a->src_dentry) != a->btgt); + a->h_path.dentry = au_h_dptr(a->src_dentry, a->btgt); + vfsub_update_h_iattr(&a->h_path, /*did*/NULL); /*ignore*/ + a->src_inode->i_ctime = d_inode(a->h_path.dentry)->i_ctime; + + if (!a->exchange) { + /* remove whiteout for dentry */ + if (a->dst_wh_dentry) { + a->h_path.dentry = a->dst_wh_dentry; + err = au_wh_unlink_dentry(a->dst_h_dir, &a->h_path, + a->dst_dentry); + if (unlikely(err)) + goto out_diropq; + } + + /* remove whtmp */ + if (a->thargs) + au_ren_del_whtmp(a); /* ignore this error */ + + au_fhsm_wrote(a->src_dentry->d_sb, a->btgt, /*force*/0); + } + err = 0; + goto out_success; + +out_diropq: + au_ren_rev_diropq(err, a); +out_rename: + au_ren_rev_rename(err, a); + dput(a->h_dst); +out_whtmp: + if (a->thargs) + au_ren_rev_whtmp(err, a); +out_whdst: + dput(a->dst_wh_dentry); + a->dst_wh_dentry = NULL; +out_whsrc: + if (a->src_wh_dentry) + au_ren_rev_whsrc(err, a); +out_success: + dput(a->src_wh_dentry); + dput(a->dst_wh_dentry); +out_thargs: + if (a->thargs) { + dput(a->h_dst); + au_whtmp_rmdir_free(a->thargs); + a->thargs = NULL; + } +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* + * test if @dentry dir can be rename destination or not. + * success means, it is a logically empty dir. + */ +static int may_rename_dstdir(struct dentry *dentry, struct au_nhash *whlist) +{ + return au_test_empty(dentry, whlist); +} + +/* + * test if @a->src_dentry dir can be rename source or not. + * if it can, return 0. + * success means, + * - it is a logically empty dir. + * - or, it exists on writable branch and has no children including whiteouts + * on the lower branch unless DIRREN is on. + */ +static int may_rename_srcdir(struct au_ren_args *a) +{ + int err; + unsigned int rdhash; + aufs_bindex_t btop, btgt; + struct dentry *dentry; + struct super_block *sb; + struct au_sbinfo *sbinfo; + + dentry = a->src_dentry; + sb = dentry->d_sb; + sbinfo = au_sbi(sb); + if (au_opt_test(sbinfo->si_mntflags, DIRREN)) + au_fset_ren(a->auren_flags, DIRREN); + + btgt = a->btgt; + btop = au_dbtop(dentry); + if (btop != btgt) { + struct au_nhash whlist; + + SiMustAnyLock(sb); + rdhash = sbinfo->si_rdhash; + if (!rdhash) + rdhash = au_rdhash_est(au_dir_size(/*file*/NULL, + dentry)); + err = au_nhash_alloc(&whlist, rdhash, GFP_NOFS); + if (unlikely(err)) + goto out; + err = au_test_empty(dentry, &whlist); + au_nhash_wh_free(&whlist); + goto out; + } + + if (btop == au_dbtaildir(dentry)) + return 0; /* success */ + + err = au_test_empty_lower(dentry); + +out: + if (err == -ENOTEMPTY) { + if (au_ftest_ren(a->auren_flags, DIRREN)) { + err = 0; + } else { + AuWarn1("renaming dir who has child(ren) on multiple " + "branches, is not supported\n"); + err = -EXDEV; + } + } + return err; +} + +/* side effect: sets whlist and h_dentry */ +static int au_ren_may_dir(struct au_ren_args *a) +{ + int err; + unsigned int rdhash; + struct dentry *d; + + d = a->dst_dentry; + SiMustAnyLock(d->d_sb); + + err = 0; + if (au_ftest_ren(a->auren_flags, ISDIR_DST) && a->dst_inode) { + rdhash = au_sbi(d->d_sb)->si_rdhash; + if (!rdhash) + rdhash = au_rdhash_est(au_dir_size(/*file*/NULL, d)); + err = au_nhash_alloc(&a->whlist, rdhash, GFP_NOFS); + if (unlikely(err)) + goto out; + + if (!a->exchange) { + au_set_dbtop(d, a->dst_btop); + err = may_rename_dstdir(d, &a->whlist); + au_set_dbtop(d, a->btgt); + } else + err = may_rename_srcdir(a); + } + a->dst_h_dentry = au_h_dptr(d, au_dbtop(d)); + if (unlikely(err)) + goto out; + + d = a->src_dentry; + a->src_h_dentry = au_h_dptr(d, au_dbtop(d)); + if (au_ftest_ren(a->auren_flags, ISDIR_SRC)) { + err = may_rename_srcdir(a); + if (unlikely(err)) { + au_nhash_wh_free(&a->whlist); + a->whlist.nh_num = 0; + } + } +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* + * simple tests for rename. + * following the checks in vfs, plus the parent-child relationship. + */ +static int au_may_ren(struct au_ren_args *a) +{ + int err, isdir; + struct inode *h_inode; + + if (a->src_btop == a->btgt) { + err = au_may_del(a->src_dentry, a->btgt, a->src_h_parent, + au_ftest_ren(a->auren_flags, ISDIR_SRC)); + if (unlikely(err)) + goto out; + err = -EINVAL; + if (unlikely(a->src_h_dentry == a->h_trap)) + goto out; + } + + err = 0; + if (a->dst_btop != a->btgt) + goto out; + + err = -ENOTEMPTY; + if (unlikely(a->dst_h_dentry == a->h_trap)) + goto out; + + err = -EIO; + isdir = !!au_ftest_ren(a->auren_flags, ISDIR_DST); + if (d_really_is_negative(a->dst_dentry)) { + if (d_is_negative(a->dst_h_dentry)) + err = au_may_add(a->dst_dentry, a->btgt, + a->dst_h_parent, isdir); + } else { + if (unlikely(d_is_negative(a->dst_h_dentry))) + goto out; + h_inode = d_inode(a->dst_h_dentry); + if (h_inode->i_nlink) + err = au_may_del(a->dst_dentry, a->btgt, + a->dst_h_parent, isdir); + } + +out: + if (unlikely(err == -ENOENT || err == -EEXIST)) + err = -EIO; + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* + * locking order + * (VFS) + * - src_dir and dir by lock_rename() + * - inode if exitsts + * (aufs) + * - lock all + * + src_dentry and dentry by aufs_read_and_write_lock2() which calls, + * + si_read_lock + * + di_write_lock2_child() + * + di_write_lock_child() + * + ii_write_lock_child() + * + di_write_lock_child2() + * + ii_write_lock_child2() + * + src_parent and parent + * + di_write_lock_parent() + * + ii_write_lock_parent() + * + di_write_lock_parent2() + * + ii_write_lock_parent2() + * + lower src_dir and dir by vfsub_lock_rename() + * + verify the every relationships between child and parent. if any + * of them failed, unlock all and return -EBUSY. + */ +static void au_ren_unlock(struct au_ren_args *a) +{ + vfsub_unlock_rename(a->src_h_parent, a->src_hdir, + a->dst_h_parent, a->dst_hdir); + if (au_ftest_ren(a->auren_flags, DIRREN) + && a->h_root) + au_hn_inode_unlock(a->h_root); + if (au_ftest_ren(a->auren_flags, MNT_WRITE)) + vfsub_mnt_drop_write(au_br_mnt(a->br)); +} + +static int au_ren_lock(struct au_ren_args *a) +{ + int err; + unsigned int udba; + + err = 0; + a->src_h_parent = au_h_dptr(a->src_parent, a->btgt); + a->src_hdir = au_hi(a->src_dir, a->btgt); + a->dst_h_parent = au_h_dptr(a->dst_parent, a->btgt); + a->dst_hdir = au_hi(a->dst_dir, a->btgt); + + err = vfsub_mnt_want_write(au_br_mnt(a->br)); + if (unlikely(err)) + goto out; + au_fset_ren(a->auren_flags, MNT_WRITE); + if (au_ftest_ren(a->auren_flags, DIRREN)) { + struct dentry *root; + struct inode *dir; + + /* + * sbinfo is already locked, so this ii_read_lock is + * unnecessary. but our debugging feature checks it. + */ + root = a->src_inode->i_sb->s_root; + if (root != a->src_parent && root != a->dst_parent) { + dir = d_inode(root); + ii_read_lock_parent3(dir); + a->h_root = au_hi(dir, a->btgt); + ii_read_unlock(dir); + au_hn_inode_lock_nested(a->h_root, AuLsc_I_PARENT3); + } + } + a->h_trap = vfsub_lock_rename(a->src_h_parent, a->src_hdir, + a->dst_h_parent, a->dst_hdir); + udba = au_opt_udba(a->src_dentry->d_sb); + if (unlikely(a->src_hdir->hi_inode != d_inode(a->src_h_parent) + || a->dst_hdir->hi_inode != d_inode(a->dst_h_parent))) + err = au_busy_or_stale(); + if (!err && au_dbtop(a->src_dentry) == a->btgt) + err = au_h_verify(a->src_h_dentry, udba, + d_inode(a->src_h_parent), a->src_h_parent, + a->br); + if (!err && au_dbtop(a->dst_dentry) == a->btgt) + err = au_h_verify(a->dst_h_dentry, udba, + d_inode(a->dst_h_parent), a->dst_h_parent, + a->br); + if (!err) + goto out; /* success */ + + err = au_busy_or_stale(); + au_ren_unlock(a); + +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +static void au_ren_refresh_dir(struct au_ren_args *a) +{ + struct inode *dir; + + dir = a->dst_dir; + inode_inc_iversion(dir); + if (au_ftest_ren(a->auren_flags, ISDIR_SRC)) { + /* is this updating defined in POSIX? */ + au_cpup_attr_timesizes(a->src_inode); + au_cpup_attr_nlink(dir, /*force*/1); + } + au_dir_ts(dir, a->btgt); + + if (a->exchange) { + dir = a->src_dir; + inode_inc_iversion(dir); + if (au_ftest_ren(a->auren_flags, ISDIR_DST)) { + /* is this updating defined in POSIX? */ + au_cpup_attr_timesizes(a->dst_inode); + au_cpup_attr_nlink(dir, /*force*/1); + } + au_dir_ts(dir, a->btgt); + } + + if (au_ftest_ren(a->auren_flags, ISSAMEDIR)) + return; + + dir = a->src_dir; + inode_inc_iversion(dir); + if (au_ftest_ren(a->auren_flags, ISDIR_SRC)) + au_cpup_attr_nlink(dir, /*force*/1); + au_dir_ts(dir, a->btgt); +} + +static void au_ren_refresh(struct au_ren_args *a) +{ + aufs_bindex_t bbot, bindex; + struct dentry *d, *h_d; + struct inode *i, *h_i; + struct super_block *sb; + + d = a->dst_dentry; + d_drop(d); + if (a->h_dst) + /* already dget-ed by au_ren_or_cpup() */ + au_set_h_dptr(d, a->btgt, a->h_dst); + + i = a->dst_inode; + if (i) { + if (!a->exchange) { + if (!au_ftest_ren(a->auren_flags, ISDIR_DST)) + vfsub_drop_nlink(i); + else { + vfsub_dead_dir(i); + au_cpup_attr_timesizes(i); + } + au_update_dbrange(d, /*do_put_zero*/1); + } else + au_cpup_attr_nlink(i, /*force*/1); + } else { + bbot = a->btgt; + for (bindex = au_dbtop(d); bindex < bbot; bindex++) + au_set_h_dptr(d, bindex, NULL); + bbot = au_dbbot(d); + for (bindex = a->btgt + 1; bindex <= bbot; bindex++) + au_set_h_dptr(d, bindex, NULL); + au_update_dbrange(d, /*do_put_zero*/0); + } + + if (a->exchange + || au_ftest_ren(a->auren_flags, DIRREN)) { + d_drop(a->src_dentry); + if (au_ftest_ren(a->auren_flags, DIRREN)) + au_set_dbwh(a->src_dentry, -1); + return; + } + + d = a->src_dentry; + au_set_dbwh(d, -1); + bbot = au_dbbot(d); + for (bindex = a->btgt + 1; bindex <= bbot; bindex++) { + h_d = au_h_dptr(d, bindex); + if (h_d) + au_set_h_dptr(d, bindex, NULL); + } + au_set_dbbot(d, a->btgt); + + sb = d->d_sb; + i = a->src_inode; + if (au_opt_test(au_mntflags(sb), PLINK) && au_plink_test(i)) + return; /* success */ + + bbot = au_ibbot(i); + for (bindex = a->btgt + 1; bindex <= bbot; bindex++) { + h_i = au_h_iptr(i, bindex); + if (h_i) { + au_xino_write(sb, bindex, h_i->i_ino, /*ino*/0); + /* ignore this error */ + au_set_h_iptr(i, bindex, NULL, 0); + } + } + au_set_ibbot(i, a->btgt); +} + +/* ---------------------------------------------------------------------- */ + +/* mainly for link(2) and rename(2) */ +int au_wbr(struct dentry *dentry, aufs_bindex_t btgt) +{ + aufs_bindex_t bdiropq, bwh; + struct dentry *parent; + struct au_branch *br; + + parent = dentry->d_parent; + IMustLock(d_inode(parent)); /* dir is locked */ + + bdiropq = au_dbdiropq(parent); + bwh = au_dbwh(dentry); + br = au_sbr(dentry->d_sb, btgt); + if (au_br_rdonly(br) + || (0 <= bdiropq && bdiropq < btgt) + || (0 <= bwh && bwh < btgt)) + btgt = -1; + + AuDbg("btgt %d\n", btgt); + return btgt; +} + +/* sets src_btop, dst_btop and btgt */ +static int au_ren_wbr(struct au_ren_args *a) +{ + int err; + struct au_wr_dir_args wr_dir_args = { + /* .force_btgt = -1, */ + .flags = AuWrDir_ADD_ENTRY + }; + + a->src_btop = au_dbtop(a->src_dentry); + a->dst_btop = au_dbtop(a->dst_dentry); + if (au_ftest_ren(a->auren_flags, ISDIR_SRC) + || au_ftest_ren(a->auren_flags, ISDIR_DST)) + au_fset_wrdir(wr_dir_args.flags, ISDIR); + wr_dir_args.force_btgt = a->src_btop; + if (a->dst_inode && a->dst_btop < a->src_btop) + wr_dir_args.force_btgt = a->dst_btop; + wr_dir_args.force_btgt = au_wbr(a->dst_dentry, wr_dir_args.force_btgt); + err = au_wr_dir(a->dst_dentry, a->src_dentry, &wr_dir_args); + a->btgt = err; + if (a->exchange) + au_update_dbtop(a->dst_dentry); + + return err; +} + +static void au_ren_dt(struct au_ren_args *a) +{ + a->h_path.dentry = a->src_h_parent; + au_dtime_store(a->src_dt + AuPARENT, a->src_parent, &a->h_path); + if (!au_ftest_ren(a->auren_flags, ISSAMEDIR)) { + a->h_path.dentry = a->dst_h_parent; + au_dtime_store(a->dst_dt + AuPARENT, a->dst_parent, &a->h_path); + } + + au_fclr_ren(a->auren_flags, DT_DSTDIR); + if (!au_ftest_ren(a->auren_flags, ISDIR_SRC) + && !a->exchange) + return; + + a->h_path.dentry = a->src_h_dentry; + au_dtime_store(a->src_dt + AuCHILD, a->src_dentry, &a->h_path); + if (d_is_positive(a->dst_h_dentry)) { + au_fset_ren(a->auren_flags, DT_DSTDIR); + a->h_path.dentry = a->dst_h_dentry; + au_dtime_store(a->dst_dt + AuCHILD, a->dst_dentry, &a->h_path); + } +} + +static void au_ren_rev_dt(int err, struct au_ren_args *a) +{ + struct dentry *h_d; + struct inode *h_inode; + + au_dtime_revert(a->src_dt + AuPARENT); + if (!au_ftest_ren(a->auren_flags, ISSAMEDIR)) + au_dtime_revert(a->dst_dt + AuPARENT); + + if (au_ftest_ren(a->auren_flags, ISDIR_SRC) && err != -EIO) { + h_d = a->src_dt[AuCHILD].dt_h_path.dentry; + h_inode = d_inode(h_d); + inode_lock_nested(h_inode, AuLsc_I_CHILD); + au_dtime_revert(a->src_dt + AuCHILD); + inode_unlock(h_inode); + + if (au_ftest_ren(a->auren_flags, DT_DSTDIR)) { + h_d = a->dst_dt[AuCHILD].dt_h_path.dentry; + h_inode = d_inode(h_d); + inode_lock_nested(h_inode, AuLsc_I_CHILD); + au_dtime_revert(a->dst_dt + AuCHILD); + inode_unlock(h_inode); + } + } +} + +/* ---------------------------------------------------------------------- */ + +int aufs_rename(struct inode *_src_dir, struct dentry *_src_dentry, + struct inode *_dst_dir, struct dentry *_dst_dentry, + unsigned int _flags) +{ + int err, lock_flags; + void *rev; + /* reduce stack space */ + struct au_ren_args *a; + struct au_pin pin; + + AuDbg("%pd, %pd, 0x%x\n", _src_dentry, _dst_dentry, _flags); + IMustLock(_src_dir); + IMustLock(_dst_dir); + + err = -EINVAL; + if (unlikely(_flags & RENAME_WHITEOUT)) + goto out; + + err = -ENOMEM; + BUILD_BUG_ON(sizeof(*a) > PAGE_SIZE); + a = kzalloc(sizeof(*a), GFP_NOFS); + if (unlikely(!a)) + goto out; + + a->flags = _flags; + a->exchange = _flags & RENAME_EXCHANGE; + a->src_dir = _src_dir; + a->src_dentry = _src_dentry; + a->src_inode = NULL; + if (d_really_is_positive(a->src_dentry)) + a->src_inode = d_inode(a->src_dentry); + a->src_parent = a->src_dentry->d_parent; /* dir inode is locked */ + a->dst_dir = _dst_dir; + a->dst_dentry = _dst_dentry; + a->dst_inode = NULL; + if (d_really_is_positive(a->dst_dentry)) + a->dst_inode = d_inode(a->dst_dentry); + a->dst_parent = a->dst_dentry->d_parent; /* dir inode is locked */ + if (a->dst_inode) { + /* + * if EXCHANGE && src is non-dir && dst is dir, + * dst is not locked. + */ + /* IMustLock(a->dst_inode); */ + au_igrab(a->dst_inode); + } + + err = -ENOTDIR; + lock_flags = AuLock_FLUSH | AuLock_NOPLM | AuLock_GEN; + if (d_is_dir(a->src_dentry)) { + au_fset_ren(a->auren_flags, ISDIR_SRC); + if (unlikely(!a->exchange + && d_really_is_positive(a->dst_dentry) + && !d_is_dir(a->dst_dentry))) + goto out_free; + lock_flags |= AuLock_DIRS; + } + if (a->dst_inode && d_is_dir(a->dst_dentry)) { + au_fset_ren(a->auren_flags, ISDIR_DST); + if (unlikely(!a->exchange + && d_really_is_positive(a->src_dentry) + && !d_is_dir(a->src_dentry))) + goto out_free; + lock_flags |= AuLock_DIRS; + } + err = aufs_read_and_write_lock2(a->dst_dentry, a->src_dentry, + lock_flags); + if (unlikely(err)) + goto out_free; + + err = au_d_hashed_positive(a->src_dentry); + if (unlikely(err)) + goto out_unlock; + err = -ENOENT; + if (a->dst_inode) { + /* + * If it is a dir, VFS unhash it before this + * function. It means we cannot rely upon d_unhashed(). + */ + if (unlikely(!a->dst_inode->i_nlink)) + goto out_unlock; + if (!au_ftest_ren(a->auren_flags, ISDIR_DST)) { + err = au_d_hashed_positive(a->dst_dentry); + if (unlikely(err && !a->exchange)) + goto out_unlock; + } else if (unlikely(IS_DEADDIR(a->dst_inode))) + goto out_unlock; + } else if (unlikely(d_unhashed(a->dst_dentry))) + goto out_unlock; + + /* + * is it possible? + * yes, it happened (in linux-3.3-rcN) but I don't know why. + * there may exist a problem somewhere else. + */ + err = -EINVAL; + if (unlikely(d_inode(a->dst_parent) == d_inode(a->src_dentry))) + goto out_unlock; + + au_fset_ren(a->auren_flags, ISSAMEDIR); /* temporary */ + di_write_lock_parent(a->dst_parent); + + /* which branch we process */ + err = au_ren_wbr(a); + if (unlikely(err < 0)) + goto out_parent; + a->br = au_sbr(a->dst_dentry->d_sb, a->btgt); + a->h_path.mnt = au_br_mnt(a->br); + + /* are they available to be renamed */ + err = au_ren_may_dir(a); + if (unlikely(err)) + goto out_children; + + /* prepare the writable parent dir on the same branch */ + if (a->dst_btop == a->btgt) { + au_fset_ren(a->auren_flags, WHDST); + } else { + err = au_cpup_dirs(a->dst_dentry, a->btgt); + if (unlikely(err)) + goto out_children; + } + + err = 0; + if (!a->exchange) { + if (a->src_dir != a->dst_dir) { + /* + * this temporary unlock is safe, + * because both dir->i_mutex are locked. + */ + di_write_unlock(a->dst_parent); + di_write_lock_parent(a->src_parent); + err = au_wr_dir_need_wh(a->src_dentry, + au_ftest_ren(a->auren_flags, + ISDIR_SRC), + &a->btgt); + di_write_unlock(a->src_parent); + di_write_lock2_parent(a->src_parent, a->dst_parent, + /*isdir*/1); + au_fclr_ren(a->auren_flags, ISSAMEDIR); + } else + err = au_wr_dir_need_wh(a->src_dentry, + au_ftest_ren(a->auren_flags, + ISDIR_SRC), + &a->btgt); + } + if (unlikely(err < 0)) + goto out_children; + if (err) + au_fset_ren(a->auren_flags, WHSRC); + + /* cpup src */ + if (a->src_btop != a->btgt) { + err = au_pin(&pin, a->src_dentry, a->btgt, + au_opt_udba(a->src_dentry->d_sb), + AuPin_DI_LOCKED | AuPin_MNT_WRITE); + if (!err) { + struct au_cp_generic cpg = { + .dentry = a->src_dentry, + .bdst = a->btgt, + .bsrc = a->src_btop, + .len = -1, + .pin = &pin, + .flags = AuCpup_DTIME | AuCpup_HOPEN + }; + AuDebugOn(au_dbtop(a->src_dentry) != a->src_btop); + err = au_sio_cpup_simple(&cpg); + au_unpin(&pin); + } + if (unlikely(err)) + goto out_children; + a->src_btop = a->btgt; + a->src_h_dentry = au_h_dptr(a->src_dentry, a->btgt); + if (!a->exchange) + au_fset_ren(a->auren_flags, WHSRC); + } + + /* cpup dst */ + if (a->exchange && a->dst_inode + && a->dst_btop != a->btgt) { + err = au_pin(&pin, a->dst_dentry, a->btgt, + au_opt_udba(a->dst_dentry->d_sb), + AuPin_DI_LOCKED | AuPin_MNT_WRITE); + if (!err) { + struct au_cp_generic cpg = { + .dentry = a->dst_dentry, + .bdst = a->btgt, + .bsrc = a->dst_btop, + .len = -1, + .pin = &pin, + .flags = AuCpup_DTIME | AuCpup_HOPEN + }; + err = au_sio_cpup_simple(&cpg); + au_unpin(&pin); + } + if (unlikely(err)) + goto out_children; + a->dst_btop = a->btgt; + a->dst_h_dentry = au_h_dptr(a->dst_dentry, a->btgt); + } + + /* lock them all */ + err = au_ren_lock(a); + if (unlikely(err)) + /* leave the copied-up one */ + goto out_children; + + if (!a->exchange) { + if (!au_opt_test(au_mntflags(a->dst_dir->i_sb), UDBA_NONE)) + err = au_may_ren(a); + else if (unlikely(a->dst_dentry->d_name.len > AUFS_MAX_NAMELEN)) + err = -ENAMETOOLONG; + if (unlikely(err)) + goto out_hdir; + } + + /* store timestamps to be revertible */ + au_ren_dt(a); + + /* store dirren info */ + if (au_ftest_ren(a->auren_flags, DIRREN)) { + err = au_dr_rename(a->src_dentry, a->btgt, + &a->dst_dentry->d_name, &rev); + AuTraceErr(err); + if (unlikely(err)) + goto out_dt; + } + + /* here we go */ + err = do_rename(a); + if (unlikely(err)) + goto out_dirren; + + if (au_ftest_ren(a->auren_flags, DIRREN)) + au_dr_rename_fin(a->src_dentry, a->btgt, rev); + + /* update dir attributes */ + au_ren_refresh_dir(a); + + /* dput/iput all lower dentries */ + au_ren_refresh(a); + + goto out_hdir; /* success */ + +out_dirren: + if (au_ftest_ren(a->auren_flags, DIRREN)) + au_dr_rename_rev(a->src_dentry, a->btgt, rev); +out_dt: + au_ren_rev_dt(err, a); +out_hdir: + au_ren_unlock(a); +out_children: + au_nhash_wh_free(&a->whlist); + if (err && a->dst_inode && a->dst_btop != a->btgt) { + AuDbg("btop %d, btgt %d\n", a->dst_btop, a->btgt); + au_set_h_dptr(a->dst_dentry, a->btgt, NULL); + au_set_dbtop(a->dst_dentry, a->dst_btop); + } +out_parent: + if (!err) { + if (d_unhashed(a->src_dentry)) + au_fset_ren(a->auren_flags, DROPPED_SRC); + if (d_unhashed(a->dst_dentry)) + au_fset_ren(a->auren_flags, DROPPED_DST); + if (!a->exchange) + d_move(a->src_dentry, a->dst_dentry); + else { + d_exchange(a->src_dentry, a->dst_dentry); + if (au_ftest_ren(a->auren_flags, DROPPED_DST)) + d_drop(a->dst_dentry); + } + if (au_ftest_ren(a->auren_flags, DROPPED_SRC)) + d_drop(a->src_dentry); + } else { + au_update_dbtop(a->dst_dentry); + if (!a->dst_inode) + d_drop(a->dst_dentry); + } + if (au_ftest_ren(a->auren_flags, ISSAMEDIR)) + di_write_unlock(a->dst_parent); + else + di_write_unlock2(a->src_parent, a->dst_parent); +out_unlock: + aufs_read_and_write_unlock2(a->dst_dentry, a->src_dentry); +out_free: + iput(a->dst_inode); + if (a->thargs) + au_whtmp_rmdir_free(a->thargs); + kfree(a); +out: + AuTraceErr(err); + return err; +} diff --git a/fs/aufs/iinfo.c b/fs/aufs/iinfo.c new file mode 100644 index 00000000000..b197398e9fd --- /dev/null +++ b/fs/aufs/iinfo.c @@ -0,0 +1,286 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * inode private data + */ + +#include "aufs.h" + +struct inode *au_h_iptr(struct inode *inode, aufs_bindex_t bindex) +{ + struct inode *h_inode; + struct au_hinode *hinode; + + IiMustAnyLock(inode); + + hinode = au_hinode(au_ii(inode), bindex); + h_inode = hinode->hi_inode; + AuDebugOn(h_inode && atomic_read(&h_inode->i_count) <= 0); + return h_inode; +} + +/* todo: hard/soft set? */ +void au_hiput(struct au_hinode *hinode) +{ + au_hn_free(hinode); + dput(hinode->hi_whdentry); + iput(hinode->hi_inode); +} + +unsigned int au_hi_flags(struct inode *inode, int isdir) +{ + unsigned int flags; + const unsigned int mnt_flags = au_mntflags(inode->i_sb); + + flags = 0; + if (au_opt_test(mnt_flags, XINO)) + au_fset_hi(flags, XINO); + if (isdir && au_opt_test(mnt_flags, UDBA_HNOTIFY)) + au_fset_hi(flags, HNOTIFY); + return flags; +} + +void au_set_h_iptr(struct inode *inode, aufs_bindex_t bindex, + struct inode *h_inode, unsigned int flags) +{ + struct au_hinode *hinode; + struct inode *hi; + struct au_iinfo *iinfo = au_ii(inode); + + IiMustWriteLock(inode); + + hinode = au_hinode(iinfo, bindex); + hi = hinode->hi_inode; + AuDebugOn(h_inode && atomic_read(&h_inode->i_count) <= 0); + + if (hi) + au_hiput(hinode); + hinode->hi_inode = h_inode; + if (h_inode) { + int err; + struct super_block *sb = inode->i_sb; + struct au_branch *br; + + AuDebugOn(inode->i_mode + && (h_inode->i_mode & S_IFMT) + != (inode->i_mode & S_IFMT)); + if (bindex == iinfo->ii_btop) + au_cpup_igen(inode, h_inode); + br = au_sbr(sb, bindex); + hinode->hi_id = br->br_id; + if (au_ftest_hi(flags, XINO)) { + err = au_xino_write(sb, bindex, h_inode->i_ino, + inode->i_ino); + if (unlikely(err)) + AuIOErr1("failed au_xino_write() %d\n", err); + } + + if (au_ftest_hi(flags, HNOTIFY) + && au_br_hnotifyable(br->br_perm)) { + err = au_hn_alloc(hinode, inode); + if (unlikely(err)) + AuIOErr1("au_hn_alloc() %d\n", err); + } + } +} + +void au_set_hi_wh(struct inode *inode, aufs_bindex_t bindex, + struct dentry *h_wh) +{ + struct au_hinode *hinode; + + IiMustWriteLock(inode); + + hinode = au_hinode(au_ii(inode), bindex); + AuDebugOn(hinode->hi_whdentry); + hinode->hi_whdentry = h_wh; +} + +void au_update_iigen(struct inode *inode, int half) +{ + struct au_iinfo *iinfo; + struct au_iigen *iigen; + unsigned int sigen; + + sigen = au_sigen(inode->i_sb); + iinfo = au_ii(inode); + iigen = &iinfo->ii_generation; + spin_lock(&iigen->ig_spin); + iigen->ig_generation = sigen; + if (half) + au_ig_fset(iigen->ig_flags, HALF_REFRESHED); + else + au_ig_fclr(iigen->ig_flags, HALF_REFRESHED); + spin_unlock(&iigen->ig_spin); +} + +/* it may be called at remount time, too */ +void au_update_ibrange(struct inode *inode, int do_put_zero) +{ + struct au_iinfo *iinfo; + aufs_bindex_t bindex, bbot; + + AuDebugOn(au_is_bad_inode(inode)); + IiMustWriteLock(inode); + + iinfo = au_ii(inode); + if (do_put_zero && iinfo->ii_btop >= 0) { + for (bindex = iinfo->ii_btop; bindex <= iinfo->ii_bbot; + bindex++) { + struct inode *h_i; + + h_i = au_hinode(iinfo, bindex)->hi_inode; + if (h_i + && !h_i->i_nlink + && !(h_i->i_state & I_LINKABLE)) + au_set_h_iptr(inode, bindex, NULL, 0); + } + } + + iinfo->ii_btop = -1; + iinfo->ii_bbot = -1; + bbot = au_sbbot(inode->i_sb); + for (bindex = 0; bindex <= bbot; bindex++) + if (au_hinode(iinfo, bindex)->hi_inode) { + iinfo->ii_btop = bindex; + break; + } + if (iinfo->ii_btop >= 0) + for (bindex = bbot; bindex >= iinfo->ii_btop; bindex--) + if (au_hinode(iinfo, bindex)->hi_inode) { + iinfo->ii_bbot = bindex; + break; + } + AuDebugOn(iinfo->ii_btop > iinfo->ii_bbot); +} + +/* ---------------------------------------------------------------------- */ + +void au_icntnr_init_once(void *_c) +{ + struct au_icntnr *c = _c; + struct au_iinfo *iinfo = &c->iinfo; + + spin_lock_init(&iinfo->ii_generation.ig_spin); + au_rw_init(&iinfo->ii_rwsem); + inode_init_once(&c->vfs_inode); +} + +void au_hinode_init(struct au_hinode *hinode) +{ + hinode->hi_inode = NULL; + hinode->hi_id = -1; + au_hn_init(hinode); + hinode->hi_whdentry = NULL; +} + +int au_iinfo_init(struct inode *inode) +{ + struct au_iinfo *iinfo; + struct super_block *sb; + struct au_hinode *hi; + int nbr, i; + + sb = inode->i_sb; + iinfo = &(container_of(inode, struct au_icntnr, vfs_inode)->iinfo); + nbr = au_sbbot(sb) + 1; + if (unlikely(nbr <= 0)) + nbr = 1; + hi = kmalloc_array(nbr, sizeof(*iinfo->ii_hinode), GFP_NOFS); + if (hi) { + au_ninodes_inc(sb); + + iinfo->ii_hinode = hi; + for (i = 0; i < nbr; i++, hi++) + au_hinode_init(hi); + + iinfo->ii_generation.ig_generation = au_sigen(sb); + iinfo->ii_btop = -1; + iinfo->ii_bbot = -1; + iinfo->ii_vdir = NULL; + return 0; + } + return -ENOMEM; +} + +int au_hinode_realloc(struct au_iinfo *iinfo, int nbr, int may_shrink) +{ + int err, i; + struct au_hinode *hip; + + AuRwMustWriteLock(&iinfo->ii_rwsem); + + err = -ENOMEM; + hip = au_krealloc(iinfo->ii_hinode, sizeof(*hip) * nbr, GFP_NOFS, + may_shrink); + if (hip) { + iinfo->ii_hinode = hip; + i = iinfo->ii_bbot + 1; + hip += i; + for (; i < nbr; i++, hip++) + au_hinode_init(hip); + err = 0; + } + + return err; +} + +void au_iinfo_fin(struct inode *inode) +{ + struct au_iinfo *iinfo; + struct au_hinode *hi; + struct super_block *sb; + aufs_bindex_t bindex, bbot; + const unsigned char unlinked = !inode->i_nlink; + + AuDebugOn(au_is_bad_inode(inode)); + + sb = inode->i_sb; + au_ninodes_dec(sb); + if (si_pid_test(sb)) + au_xino_delete_inode(inode, unlinked); + else { + /* + * it is safe to hide the dependency between sbinfo and + * sb->s_umount. + */ + lockdep_off(); + si_noflush_read_lock(sb); + au_xino_delete_inode(inode, unlinked); + si_read_unlock(sb); + lockdep_on(); + } + + iinfo = au_ii(inode); + if (iinfo->ii_vdir) + au_vdir_free(iinfo->ii_vdir); + + bindex = iinfo->ii_btop; + if (bindex >= 0) { + hi = au_hinode(iinfo, bindex); + bbot = iinfo->ii_bbot; + while (bindex++ <= bbot) { + if (hi->hi_inode) + au_hiput(hi); + hi++; + } + } + kfree(iinfo->ii_hinode); + AuRwDestroy(&iinfo->ii_rwsem); +} diff --git a/fs/aufs/inode.c b/fs/aufs/inode.c new file mode 100644 index 00000000000..50ec91179d1 --- /dev/null +++ b/fs/aufs/inode.c @@ -0,0 +1,528 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * inode functions + */ + +#include "aufs.h" + +struct inode *au_igrab(struct inode *inode) +{ + if (inode) { + AuDebugOn(!atomic_read(&inode->i_count)); + ihold(inode); + } + return inode; +} + +static void au_refresh_hinode_attr(struct inode *inode, int do_version) +{ + au_cpup_attr_all(inode, /*force*/0); + au_update_iigen(inode, /*half*/1); + if (do_version) + inode_inc_iversion(inode); +} + +static int au_ii_refresh(struct inode *inode, int *update) +{ + int err, e, nbr; + umode_t type; + aufs_bindex_t bindex, new_bindex; + struct super_block *sb; + struct au_iinfo *iinfo; + struct au_hinode *p, *q, tmp; + + AuDebugOn(au_is_bad_inode(inode)); + IiMustWriteLock(inode); + + *update = 0; + sb = inode->i_sb; + nbr = au_sbbot(sb) + 1; + type = inode->i_mode & S_IFMT; + iinfo = au_ii(inode); + err = au_hinode_realloc(iinfo, nbr, /*may_shrink*/0); + if (unlikely(err)) + goto out; + + AuDebugOn(iinfo->ii_btop < 0); + p = au_hinode(iinfo, iinfo->ii_btop); + for (bindex = iinfo->ii_btop; bindex <= iinfo->ii_bbot; + bindex++, p++) { + if (!p->hi_inode) + continue; + + AuDebugOn(type != (p->hi_inode->i_mode & S_IFMT)); + new_bindex = au_br_index(sb, p->hi_id); + if (new_bindex == bindex) + continue; + + if (new_bindex < 0) { + *update = 1; + au_hiput(p); + p->hi_inode = NULL; + continue; + } + + if (new_bindex < iinfo->ii_btop) + iinfo->ii_btop = new_bindex; + if (iinfo->ii_bbot < new_bindex) + iinfo->ii_bbot = new_bindex; + /* swap two lower inode, and loop again */ + q = au_hinode(iinfo, new_bindex); + tmp = *q; + *q = *p; + *p = tmp; + if (tmp.hi_inode) { + bindex--; + p--; + } + } + au_update_ibrange(inode, /*do_put_zero*/0); + au_hinode_realloc(iinfo, nbr, /*may_shrink*/1); /* harmless if err */ + e = au_dy_irefresh(inode); + if (unlikely(e && !err)) + err = e; + +out: + AuTraceErr(err); + return err; +} + +void au_refresh_iop(struct inode *inode, int force_getattr) +{ + int type; + struct au_sbinfo *sbi = au_sbi(inode->i_sb); + const struct inode_operations *iop + = force_getattr ? aufs_iop : sbi->si_iop_array; + + if (inode->i_op == iop) + return; + + switch (inode->i_mode & S_IFMT) { + case S_IFDIR: + type = AuIop_DIR; + break; + case S_IFLNK: + type = AuIop_SYMLINK; + break; + default: + type = AuIop_OTHER; + break; + } + + inode->i_op = iop + type; + /* unnecessary smp_wmb() */ +} + +int au_refresh_hinode_self(struct inode *inode) +{ + int err, update; + + err = au_ii_refresh(inode, &update); + if (!err) + au_refresh_hinode_attr(inode, update && S_ISDIR(inode->i_mode)); + + AuTraceErr(err); + return err; +} + +int au_refresh_hinode(struct inode *inode, struct dentry *dentry) +{ + int err, e, update; + unsigned int flags; + umode_t mode; + aufs_bindex_t bindex, bbot; + unsigned char isdir; + struct au_hinode *p; + struct au_iinfo *iinfo; + + err = au_ii_refresh(inode, &update); + if (unlikely(err)) + goto out; + + update = 0; + iinfo = au_ii(inode); + p = au_hinode(iinfo, iinfo->ii_btop); + mode = (inode->i_mode & S_IFMT); + isdir = S_ISDIR(mode); + flags = au_hi_flags(inode, isdir); + bbot = au_dbbot(dentry); + for (bindex = au_dbtop(dentry); bindex <= bbot; bindex++) { + struct inode *h_i, *h_inode; + struct dentry *h_d; + + h_d = au_h_dptr(dentry, bindex); + if (!h_d || d_is_negative(h_d)) + continue; + + h_inode = d_inode(h_d); + AuDebugOn(mode != (h_inode->i_mode & S_IFMT)); + if (iinfo->ii_btop <= bindex && bindex <= iinfo->ii_bbot) { + h_i = au_h_iptr(inode, bindex); + if (h_i) { + if (h_i == h_inode) + continue; + err = -EIO; + break; + } + } + if (bindex < iinfo->ii_btop) + iinfo->ii_btop = bindex; + if (iinfo->ii_bbot < bindex) + iinfo->ii_bbot = bindex; + au_set_h_iptr(inode, bindex, au_igrab(h_inode), flags); + update = 1; + } + au_update_ibrange(inode, /*do_put_zero*/0); + e = au_dy_irefresh(inode); + if (unlikely(e && !err)) + err = e; + if (!err) + au_refresh_hinode_attr(inode, update && isdir); + +out: + AuTraceErr(err); + return err; +} + +static int set_inode(struct inode *inode, struct dentry *dentry) +{ + int err; + unsigned int flags; + umode_t mode; + aufs_bindex_t bindex, btop, btail; + unsigned char isdir; + struct dentry *h_dentry; + struct inode *h_inode; + struct au_iinfo *iinfo; + struct inode_operations *iop; + + IiMustWriteLock(inode); + + err = 0; + isdir = 0; + iop = au_sbi(inode->i_sb)->si_iop_array; + btop = au_dbtop(dentry); + h_dentry = au_h_dptr(dentry, btop); + h_inode = d_inode(h_dentry); + mode = h_inode->i_mode; + switch (mode & S_IFMT) { + case S_IFREG: + btail = au_dbtail(dentry); + inode->i_op = iop + AuIop_OTHER; + inode->i_fop = &aufs_file_fop; + err = au_dy_iaop(inode, btop, h_inode); + if (unlikely(err)) + goto out; + break; + case S_IFDIR: + isdir = 1; + btail = au_dbtaildir(dentry); + inode->i_op = iop + AuIop_DIR; + inode->i_fop = &aufs_dir_fop; + break; + case S_IFLNK: + btail = au_dbtail(dentry); + inode->i_op = iop + AuIop_SYMLINK; + break; + case S_IFBLK: + case S_IFCHR: + case S_IFIFO: + case S_IFSOCK: + btail = au_dbtail(dentry); + inode->i_op = iop + AuIop_OTHER; + init_special_inode(inode, mode, h_inode->i_rdev); + break; + default: + AuIOErr("Unknown file type 0%o\n", mode); + err = -EIO; + goto out; + } + + /* do not set hnotify for whiteouted dirs (SHWH mode) */ + flags = au_hi_flags(inode, isdir); + if (au_opt_test(au_mntflags(dentry->d_sb), SHWH) + && au_ftest_hi(flags, HNOTIFY) + && dentry->d_name.len > AUFS_WH_PFX_LEN + && !memcmp(dentry->d_name.name, AUFS_WH_PFX, AUFS_WH_PFX_LEN)) + au_fclr_hi(flags, HNOTIFY); + iinfo = au_ii(inode); + iinfo->ii_btop = btop; + iinfo->ii_bbot = btail; + for (bindex = btop; bindex <= btail; bindex++) { + h_dentry = au_h_dptr(dentry, bindex); + if (h_dentry) + au_set_h_iptr(inode, bindex, + au_igrab(d_inode(h_dentry)), flags); + } + au_cpup_attr_all(inode, /*force*/1); + /* + * to force calling aufs_get_acl() every time, + * do not call cache_no_acl() for aufs inode. + */ + +out: + return err; +} + +/* + * successful returns with iinfo write_locked + * minus: errno + * zero: success, matched + * plus: no error, but unmatched + */ +static int reval_inode(struct inode *inode, struct dentry *dentry) +{ + int err; + unsigned int gen, igflags; + aufs_bindex_t bindex, bbot; + struct inode *h_inode, *h_dinode; + struct dentry *h_dentry; + + /* + * before this function, if aufs got any iinfo lock, it must be only + * one, the parent dir. + * it can happen by UDBA and the obsoleted inode number. + */ + err = -EIO; + if (unlikely(inode->i_ino == parent_ino(dentry))) + goto out; + + err = 1; + ii_write_lock_new_child(inode); + h_dentry = au_h_dptr(dentry, au_dbtop(dentry)); + h_dinode = d_inode(h_dentry); + bbot = au_ibbot(inode); + for (bindex = au_ibtop(inode); bindex <= bbot; bindex++) { + h_inode = au_h_iptr(inode, bindex); + if (!h_inode || h_inode != h_dinode) + continue; + + err = 0; + gen = au_iigen(inode, &igflags); + if (gen == au_digen(dentry) + && !au_ig_ftest(igflags, HALF_REFRESHED)) + break; + + /* fully refresh inode using dentry */ + err = au_refresh_hinode(inode, dentry); + if (!err) + au_update_iigen(inode, /*half*/0); + break; + } + + if (unlikely(err)) + ii_write_unlock(inode); +out: + return err; +} + +int au_ino(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino, + unsigned int d_type, ino_t *ino) +{ + int err, idx; + const int isnondir = d_type != DT_DIR; + + /* prevent hardlinked inode number from race condition */ + if (isnondir) { + err = au_xinondir_enter(sb, bindex, h_ino, &idx); + if (unlikely(err)) + goto out; + } + + err = au_xino_read(sb, bindex, h_ino, ino); + if (unlikely(err)) + goto out_xinondir; + + if (!*ino) { + err = -EIO; + *ino = au_xino_new_ino(sb); + if (unlikely(!*ino)) + goto out_xinondir; + err = au_xino_write(sb, bindex, h_ino, *ino); + if (unlikely(err)) + goto out_xinondir; + } + +out_xinondir: + if (isnondir && idx >= 0) + au_xinondir_leave(sb, bindex, h_ino, idx); +out: + return err; +} + +/* successful returns with iinfo write_locked */ +/* todo: return with unlocked? */ +struct inode *au_new_inode(struct dentry *dentry, int must_new) +{ + struct inode *inode, *h_inode; + struct dentry *h_dentry; + struct super_block *sb; + ino_t h_ino, ino; + int err, idx, hlinked; + aufs_bindex_t btop; + + sb = dentry->d_sb; + btop = au_dbtop(dentry); + h_dentry = au_h_dptr(dentry, btop); + h_inode = d_inode(h_dentry); + h_ino = h_inode->i_ino; + hlinked = !d_is_dir(h_dentry) && h_inode->i_nlink > 1; + +new_ino: + /* + * stop 'race'-ing between hardlinks under different + * parents. + */ + if (hlinked) { + err = au_xinondir_enter(sb, btop, h_ino, &idx); + inode = ERR_PTR(err); + if (unlikely(err)) + goto out; + } + + err = au_xino_read(sb, btop, h_ino, &ino); + inode = ERR_PTR(err); + if (unlikely(err)) + goto out_xinondir; + + if (!ino) { + ino = au_xino_new_ino(sb); + if (unlikely(!ino)) { + inode = ERR_PTR(-EIO); + goto out_xinondir; + } + } + + AuDbg("i%lu\n", (unsigned long)ino); + inode = au_iget_locked(sb, ino); + err = PTR_ERR(inode); + if (IS_ERR(inode)) + goto out_xinondir; + + AuDbg("%lx, new %d\n", inode->i_state, !!(inode->i_state & I_NEW)); + if (inode->i_state & I_NEW) { + ii_write_lock_new_child(inode); + err = set_inode(inode, dentry); + if (!err) { + unlock_new_inode(inode); + goto out_xinondir; /* success */ + } + + /* + * iget_failed() calls iput(), but we need to call + * ii_write_unlock() after iget_failed(). so dirty hack for + * i_count. + */ + atomic_inc(&inode->i_count); + iget_failed(inode); + ii_write_unlock(inode); + au_xino_write(sb, btop, h_ino, /*ino*/0); + /* ignore this error */ + goto out_iput; + } else if (!must_new && !IS_DEADDIR(inode) && inode->i_nlink) { + /* + * horrible race condition between lookup, readdir and copyup + * (or something). + */ + if (hlinked && idx >= 0) + au_xinondir_leave(sb, btop, h_ino, idx); + err = reval_inode(inode, dentry); + if (unlikely(err < 0)) { + hlinked = 0; + goto out_iput; + } + if (!err) + goto out; /* success */ + else if (hlinked && idx >= 0) { + err = au_xinondir_enter(sb, btop, h_ino, &idx); + if (unlikely(err)) { + iput(inode); + inode = ERR_PTR(err); + goto out; + } + } + } + + if (unlikely(au_test_fs_unique_ino(h_inode))) + AuWarn1("Warning: Un-notified UDBA or repeatedly renamed dir," + " b%d, %s, %pd, hi%lu, i%lu.\n", + btop, au_sbtype(h_dentry->d_sb), dentry, + (unsigned long)h_ino, (unsigned long)ino); + ino = 0; + err = au_xino_write(sb, btop, h_ino, /*ino*/0); + if (!err) { + iput(inode); + if (hlinked && idx >= 0) + au_xinondir_leave(sb, btop, h_ino, idx); + goto new_ino; + } + +out_iput: + iput(inode); + inode = ERR_PTR(err); +out_xinondir: + if (hlinked && idx >= 0) + au_xinondir_leave(sb, btop, h_ino, idx); +out: + return inode; +} + +/* ---------------------------------------------------------------------- */ + +int au_test_ro(struct super_block *sb, aufs_bindex_t bindex, + struct inode *inode) +{ + int err; + struct inode *hi; + + err = au_br_rdonly(au_sbr(sb, bindex)); + + /* pseudo-link after flushed may happen out of bounds */ + if (!err + && inode + && au_ibtop(inode) <= bindex + && bindex <= au_ibbot(inode)) { + /* + * permission check is unnecessary since vfsub routine + * will be called later + */ + hi = au_h_iptr(inode, bindex); + if (hi) + err = IS_IMMUTABLE(hi) ? -EROFS : 0; + } + + return err; +} + +int au_test_h_perm(struct inode *h_inode, int mask) +{ + if (uid_eq(current_fsuid(), GLOBAL_ROOT_UID)) + return 0; + return inode_permission(h_inode, mask); +} + +int au_test_h_perm_sio(struct inode *h_inode, int mask) +{ + if (au_test_nfs(h_inode->i_sb) + && (mask & MAY_WRITE) + && S_ISDIR(h_inode->i_mode)) + mask |= MAY_READ; /* force permission check */ + return au_test_h_perm(h_inode, mask); +} diff --git a/fs/aufs/inode.h b/fs/aufs/inode.h new file mode 100644 index 00000000000..28e61b270e5 --- /dev/null +++ b/fs/aufs/inode.h @@ -0,0 +1,696 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * inode operations + */ + +#ifndef __AUFS_INODE_H__ +#define __AUFS_INODE_H__ + +#ifdef __KERNEL__ + +#include +#include "rwsem.h" + +struct vfsmount; + +struct au_hnotify { +#ifdef CONFIG_AUFS_HNOTIFY +#ifdef CONFIG_AUFS_HFSNOTIFY + /* never use fsnotify_add_vfsmount_mark() */ + struct fsnotify_mark hn_mark; +#endif + struct inode *hn_aufs_inode; /* no get/put */ +#endif +} ____cacheline_aligned_in_smp; + +struct au_hinode { + struct inode *hi_inode; + aufs_bindex_t hi_id; +#ifdef CONFIG_AUFS_HNOTIFY + struct au_hnotify *hi_notify; +#endif + + /* reference to the copied-up whiteout with get/put */ + struct dentry *hi_whdentry; +}; + +/* ig_flags */ +#define AuIG_HALF_REFRESHED 1 +#define au_ig_ftest(flags, name) ((flags) & AuIG_##name) +#define au_ig_fset(flags, name) \ + do { (flags) |= AuIG_##name; } while (0) +#define au_ig_fclr(flags, name) \ + do { (flags) &= ~AuIG_##name; } while (0) + +struct au_iigen { + spinlock_t ig_spin; + __u32 ig_generation, ig_flags; +}; + +struct au_vdir; +struct au_iinfo { + struct au_iigen ii_generation; + struct super_block *ii_hsb1; /* no get/put */ + + struct au_rwsem ii_rwsem; + aufs_bindex_t ii_btop, ii_bbot; + __u32 ii_higen; + struct au_hinode *ii_hinode; + struct au_vdir *ii_vdir; +}; + +struct au_icntnr { + struct au_iinfo iinfo; + struct inode vfs_inode; + struct hlist_bl_node plink; +} ____cacheline_aligned_in_smp; + +/* au_pin flags */ +#define AuPin_DI_LOCKED 1 +#define AuPin_MNT_WRITE (1 << 1) +#define au_ftest_pin(flags, name) ((flags) & AuPin_##name) +#define au_fset_pin(flags, name) \ + do { (flags) |= AuPin_##name; } while (0) +#define au_fclr_pin(flags, name) \ + do { (flags) &= ~AuPin_##name; } while (0) + +struct au_pin { + /* input */ + struct dentry *dentry; + unsigned int udba; + unsigned char lsc_di, lsc_hi, flags; + aufs_bindex_t bindex; + + /* output */ + struct dentry *parent; + struct au_hinode *hdir; + struct vfsmount *h_mnt; + + /* temporary unlock/relock for copyup */ + struct dentry *h_dentry, *h_parent; + struct au_branch *br; + struct task_struct *task; +}; + +void au_pin_hdir_unlock(struct au_pin *p); +int au_pin_hdir_lock(struct au_pin *p); +int au_pin_hdir_relock(struct au_pin *p); +void au_pin_hdir_acquire_nest(struct au_pin *p); +void au_pin_hdir_release(struct au_pin *p); + +/* ---------------------------------------------------------------------- */ + +static inline struct au_iinfo *au_ii(struct inode *inode) +{ + BUG_ON(is_bad_inode(inode)); + return &(container_of(inode, struct au_icntnr, vfs_inode)->iinfo); +} + +/* ---------------------------------------------------------------------- */ + +/* inode.c */ +struct inode *au_igrab(struct inode *inode); +void au_refresh_iop(struct inode *inode, int force_getattr); +int au_refresh_hinode_self(struct inode *inode); +int au_refresh_hinode(struct inode *inode, struct dentry *dentry); +int au_ino(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino, + unsigned int d_type, ino_t *ino); +struct inode *au_new_inode(struct dentry *dentry, int must_new); +int au_test_ro(struct super_block *sb, aufs_bindex_t bindex, + struct inode *inode); +int au_test_h_perm(struct inode *h_inode, int mask); +int au_test_h_perm_sio(struct inode *h_inode, int mask); + +static inline int au_wh_ino(struct super_block *sb, aufs_bindex_t bindex, + ino_t h_ino, unsigned int d_type, ino_t *ino) +{ +#ifdef CONFIG_AUFS_SHWH + return au_ino(sb, bindex, h_ino, d_type, ino); +#else + return 0; +#endif +} + +/* i_op.c */ +enum { + AuIop_SYMLINK, + AuIop_DIR, + AuIop_OTHER, + AuIop_Last +}; +extern struct inode_operations aufs_iop[AuIop_Last], + aufs_iop_nogetattr[AuIop_Last]; + +/* au_wr_dir flags */ +#define AuWrDir_ADD_ENTRY 1 +#define AuWrDir_ISDIR (1 << 1) +#define AuWrDir_TMPFILE (1 << 2) +#define au_ftest_wrdir(flags, name) ((flags) & AuWrDir_##name) +#define au_fset_wrdir(flags, name) \ + do { (flags) |= AuWrDir_##name; } while (0) +#define au_fclr_wrdir(flags, name) \ + do { (flags) &= ~AuWrDir_##name; } while (0) + +struct au_wr_dir_args { + aufs_bindex_t force_btgt; + unsigned char flags; +}; +int au_wr_dir(struct dentry *dentry, struct dentry *src_dentry, + struct au_wr_dir_args *args); + +struct dentry *au_pinned_h_parent(struct au_pin *pin); +void au_pin_init(struct au_pin *pin, struct dentry *dentry, + aufs_bindex_t bindex, int lsc_di, int lsc_hi, + unsigned int udba, unsigned char flags); +int au_pin(struct au_pin *pin, struct dentry *dentry, aufs_bindex_t bindex, + unsigned int udba, unsigned char flags) __must_check; +int au_do_pin(struct au_pin *pin) __must_check; +void au_unpin(struct au_pin *pin); +int au_reval_for_attr(struct dentry *dentry, unsigned int sigen); + +#define AuIcpup_DID_CPUP 1 +#define au_ftest_icpup(flags, name) ((flags) & AuIcpup_##name) +#define au_fset_icpup(flags, name) \ + do { (flags) |= AuIcpup_##name; } while (0) +#define au_fclr_icpup(flags, name) \ + do { (flags) &= ~AuIcpup_##name; } while (0) + +struct au_icpup_args { + unsigned char flags; + unsigned char pin_flags; + aufs_bindex_t btgt; + unsigned int udba; + struct au_pin pin; + struct path h_path; + struct inode *h_inode; +}; + +int au_pin_and_icpup(struct dentry *dentry, struct iattr *ia, + struct au_icpup_args *a); + +int au_h_path_getattr(struct dentry *dentry, int force, struct path *h_path, + int locked); + +/* i_op_add.c */ +int au_may_add(struct dentry *dentry, aufs_bindex_t bindex, + struct dentry *h_parent, int isdir); +int aufs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, + dev_t dev); +int aufs_symlink(struct inode *dir, struct dentry *dentry, const char *symname); +int aufs_create(struct inode *dir, struct dentry *dentry, umode_t mode, + bool want_excl); +struct vfsub_aopen_args; +int au_aopen_or_create(struct inode *dir, struct dentry *dentry, + struct vfsub_aopen_args *args); +int aufs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode); +int aufs_link(struct dentry *src_dentry, struct inode *dir, + struct dentry *dentry); +int aufs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); + +/* i_op_del.c */ +int au_wr_dir_need_wh(struct dentry *dentry, int isdir, aufs_bindex_t *bcpup); +int au_may_del(struct dentry *dentry, aufs_bindex_t bindex, + struct dentry *h_parent, int isdir); +int aufs_unlink(struct inode *dir, struct dentry *dentry); +int aufs_rmdir(struct inode *dir, struct dentry *dentry); + +/* i_op_ren.c */ +int au_wbr(struct dentry *dentry, aufs_bindex_t btgt); +int aufs_rename(struct inode *src_dir, struct dentry *src_dentry, + struct inode *dir, struct dentry *dentry, + unsigned int flags); + +/* iinfo.c */ +struct inode *au_h_iptr(struct inode *inode, aufs_bindex_t bindex); +void au_hiput(struct au_hinode *hinode); +void au_set_hi_wh(struct inode *inode, aufs_bindex_t bindex, + struct dentry *h_wh); +unsigned int au_hi_flags(struct inode *inode, int isdir); + +/* hinode flags */ +#define AuHi_XINO 1 +#define AuHi_HNOTIFY (1 << 1) +#define au_ftest_hi(flags, name) ((flags) & AuHi_##name) +#define au_fset_hi(flags, name) \ + do { (flags) |= AuHi_##name; } while (0) +#define au_fclr_hi(flags, name) \ + do { (flags) &= ~AuHi_##name; } while (0) + +#ifndef CONFIG_AUFS_HNOTIFY +#undef AuHi_HNOTIFY +#define AuHi_HNOTIFY 0 +#endif + +void au_set_h_iptr(struct inode *inode, aufs_bindex_t bindex, + struct inode *h_inode, unsigned int flags); + +void au_update_iigen(struct inode *inode, int half); +void au_update_ibrange(struct inode *inode, int do_put_zero); + +void au_icntnr_init_once(void *_c); +void au_hinode_init(struct au_hinode *hinode); +int au_iinfo_init(struct inode *inode); +void au_iinfo_fin(struct inode *inode); +int au_hinode_realloc(struct au_iinfo *iinfo, int nbr, int may_shrink); + +#ifdef CONFIG_PROC_FS +/* plink.c */ +int au_plink_maint(struct super_block *sb, int flags); +struct au_sbinfo; +void au_plink_maint_leave(struct au_sbinfo *sbinfo); +int au_plink_maint_enter(struct super_block *sb); +#ifdef CONFIG_AUFS_DEBUG +void au_plink_list(struct super_block *sb); +#else +AuStubVoid(au_plink_list, struct super_block *sb) +#endif +int au_plink_test(struct inode *inode); +struct dentry *au_plink_lkup(struct inode *inode, aufs_bindex_t bindex); +void au_plink_append(struct inode *inode, aufs_bindex_t bindex, + struct dentry *h_dentry); +void au_plink_put(struct super_block *sb, int verbose); +void au_plink_clean(struct super_block *sb, int verbose); +void au_plink_half_refresh(struct super_block *sb, aufs_bindex_t br_id); +#else +AuStubInt0(au_plink_maint, struct super_block *sb, int flags); +AuStubVoid(au_plink_maint_leave, struct au_sbinfo *sbinfo); +AuStubInt0(au_plink_maint_enter, struct super_block *sb); +AuStubVoid(au_plink_list, struct super_block *sb); +AuStubInt0(au_plink_test, struct inode *inode); +AuStub(struct dentry *, au_plink_lkup, return NULL, + struct inode *inode, aufs_bindex_t bindex); +AuStubVoid(au_plink_append, struct inode *inode, aufs_bindex_t bindex, + struct dentry *h_dentry); +AuStubVoid(au_plink_put, struct super_block *sb, int verbose); +AuStubVoid(au_plink_clean, struct super_block *sb, int verbose); +AuStubVoid(au_plink_half_refresh, struct super_block *sb, aufs_bindex_t br_id); +#endif /* CONFIG_PROC_FS */ + +#ifdef CONFIG_AUFS_XATTR +/* xattr.c */ +int au_cpup_xattr(struct dentry *h_dst, struct dentry *h_src, int ignore_flags, + unsigned int verbose); +ssize_t aufs_listxattr(struct dentry *dentry, char *list, size_t size); +void au_xattr_init(struct super_block *sb); +#else +AuStubInt0(au_cpup_xattr, struct dentry *h_dst, struct dentry *h_src, + int ignore_flags, unsigned int verbose); +AuStubVoid(au_xattr_init, struct super_block *sb); +#endif + +#ifdef CONFIG_FS_POSIX_ACL +struct posix_acl *aufs_get_acl(struct inode *inode, int type); +int aufs_set_acl(struct inode *inode, struct posix_acl *acl, int type); +#endif + +#if IS_ENABLED(CONFIG_AUFS_XATTR) || IS_ENABLED(CONFIG_FS_POSIX_ACL) +enum { + AU_XATTR_SET, + AU_ACL_SET +}; + +struct au_sxattr { + int type; + union { + struct { + const char *name; + const void *value; + size_t size; + int flags; + } set; + struct { + struct posix_acl *acl; + int type; + } acl_set; + } u; +}; +ssize_t au_sxattr(struct dentry *dentry, struct inode *inode, + struct au_sxattr *arg); +#endif + +/* ---------------------------------------------------------------------- */ + +/* lock subclass for iinfo */ +enum { + AuLsc_II_CHILD, /* child first */ + AuLsc_II_CHILD2, /* rename(2), link(2), and cpup at hnotify */ + AuLsc_II_CHILD3, /* copyup dirs */ + AuLsc_II_PARENT, /* see AuLsc_I_PARENT in vfsub.h */ + AuLsc_II_PARENT2, + AuLsc_II_PARENT3, /* copyup dirs */ + AuLsc_II_NEW_CHILD +}; + +/* + * ii_read_lock_child, ii_write_lock_child, + * ii_read_lock_child2, ii_write_lock_child2, + * ii_read_lock_child3, ii_write_lock_child3, + * ii_read_lock_parent, ii_write_lock_parent, + * ii_read_lock_parent2, ii_write_lock_parent2, + * ii_read_lock_parent3, ii_write_lock_parent3, + * ii_read_lock_new_child, ii_write_lock_new_child, + */ +#define AuReadLockFunc(name, lsc) \ +static inline void ii_read_lock_##name(struct inode *i) \ +{ \ + au_rw_read_lock_nested(&au_ii(i)->ii_rwsem, AuLsc_II_##lsc); \ +} + +#define AuWriteLockFunc(name, lsc) \ +static inline void ii_write_lock_##name(struct inode *i) \ +{ \ + au_rw_write_lock_nested(&au_ii(i)->ii_rwsem, AuLsc_II_##lsc); \ +} + +#define AuRWLockFuncs(name, lsc) \ + AuReadLockFunc(name, lsc) \ + AuWriteLockFunc(name, lsc) + +AuRWLockFuncs(child, CHILD); +AuRWLockFuncs(child2, CHILD2); +AuRWLockFuncs(child3, CHILD3); +AuRWLockFuncs(parent, PARENT); +AuRWLockFuncs(parent2, PARENT2); +AuRWLockFuncs(parent3, PARENT3); +AuRWLockFuncs(new_child, NEW_CHILD); + +#undef AuReadLockFunc +#undef AuWriteLockFunc +#undef AuRWLockFuncs + +#define ii_read_unlock(i) au_rw_read_unlock(&au_ii(i)->ii_rwsem) +#define ii_write_unlock(i) au_rw_write_unlock(&au_ii(i)->ii_rwsem) +#define ii_downgrade_lock(i) au_rw_dgrade_lock(&au_ii(i)->ii_rwsem) + +#define IiMustNoWaiters(i) AuRwMustNoWaiters(&au_ii(i)->ii_rwsem) +#define IiMustAnyLock(i) AuRwMustAnyLock(&au_ii(i)->ii_rwsem) +#define IiMustWriteLock(i) AuRwMustWriteLock(&au_ii(i)->ii_rwsem) + +/* ---------------------------------------------------------------------- */ + +static inline void au_icntnr_init(struct au_icntnr *c) +{ +#ifdef CONFIG_AUFS_DEBUG + c->vfs_inode.i_mode = 0; +#endif +} + +static inline unsigned int au_iigen(struct inode *inode, unsigned int *igflags) +{ + unsigned int gen; + struct au_iinfo *iinfo; + struct au_iigen *iigen; + + iinfo = au_ii(inode); + iigen = &iinfo->ii_generation; + spin_lock(&iigen->ig_spin); + if (igflags) + *igflags = iigen->ig_flags; + gen = iigen->ig_generation; + spin_unlock(&iigen->ig_spin); + + return gen; +} + +/* tiny test for inode number */ +/* tmpfs generation is too rough */ +static inline int au_test_higen(struct inode *inode, struct inode *h_inode) +{ + struct au_iinfo *iinfo; + + iinfo = au_ii(inode); + AuRwMustAnyLock(&iinfo->ii_rwsem); + return !(iinfo->ii_hsb1 == h_inode->i_sb + && iinfo->ii_higen == h_inode->i_generation); +} + +static inline void au_iigen_dec(struct inode *inode) +{ + struct au_iinfo *iinfo; + struct au_iigen *iigen; + + iinfo = au_ii(inode); + iigen = &iinfo->ii_generation; + spin_lock(&iigen->ig_spin); + iigen->ig_generation--; + spin_unlock(&iigen->ig_spin); +} + +static inline int au_iigen_test(struct inode *inode, unsigned int sigen) +{ + int err; + + err = 0; + if (unlikely(inode && au_iigen(inode, NULL) != sigen)) + err = -EIO; + + return err; +} + +/* ---------------------------------------------------------------------- */ + +static inline struct au_hinode *au_hinode(struct au_iinfo *iinfo, + aufs_bindex_t bindex) +{ + return iinfo->ii_hinode + bindex; +} + +static inline int au_is_bad_inode(struct inode *inode) +{ + return !!(is_bad_inode(inode) || !au_hinode(au_ii(inode), 0)); +} + +static inline aufs_bindex_t au_ii_br_id(struct inode *inode, + aufs_bindex_t bindex) +{ + IiMustAnyLock(inode); + return au_hinode(au_ii(inode), bindex)->hi_id; +} + +static inline aufs_bindex_t au_ibtop(struct inode *inode) +{ + IiMustAnyLock(inode); + return au_ii(inode)->ii_btop; +} + +static inline aufs_bindex_t au_ibbot(struct inode *inode) +{ + IiMustAnyLock(inode); + return au_ii(inode)->ii_bbot; +} + +static inline struct au_vdir *au_ivdir(struct inode *inode) +{ + IiMustAnyLock(inode); + return au_ii(inode)->ii_vdir; +} + +static inline struct dentry *au_hi_wh(struct inode *inode, aufs_bindex_t bindex) +{ + IiMustAnyLock(inode); + return au_hinode(au_ii(inode), bindex)->hi_whdentry; +} + +static inline void au_set_ibtop(struct inode *inode, aufs_bindex_t bindex) +{ + IiMustWriteLock(inode); + au_ii(inode)->ii_btop = bindex; +} + +static inline void au_set_ibbot(struct inode *inode, aufs_bindex_t bindex) +{ + IiMustWriteLock(inode); + au_ii(inode)->ii_bbot = bindex; +} + +static inline void au_set_ivdir(struct inode *inode, struct au_vdir *vdir) +{ + IiMustWriteLock(inode); + au_ii(inode)->ii_vdir = vdir; +} + +static inline struct au_hinode *au_hi(struct inode *inode, aufs_bindex_t bindex) +{ + IiMustAnyLock(inode); + return au_hinode(au_ii(inode), bindex); +} + +/* ---------------------------------------------------------------------- */ + +static inline struct dentry *au_pinned_parent(struct au_pin *pin) +{ + if (pin) + return pin->parent; + return NULL; +} + +static inline struct inode *au_pinned_h_dir(struct au_pin *pin) +{ + if (pin && pin->hdir) + return pin->hdir->hi_inode; + return NULL; +} + +static inline struct au_hinode *au_pinned_hdir(struct au_pin *pin) +{ + if (pin) + return pin->hdir; + return NULL; +} + +static inline void au_pin_set_dentry(struct au_pin *pin, struct dentry *dentry) +{ + if (pin) + pin->dentry = dentry; +} + +static inline void au_pin_set_parent_lflag(struct au_pin *pin, + unsigned char lflag) +{ + if (pin) { + if (lflag) + au_fset_pin(pin->flags, DI_LOCKED); + else + au_fclr_pin(pin->flags, DI_LOCKED); + } +} + +#if 0 /* reserved */ +static inline void au_pin_set_parent(struct au_pin *pin, struct dentry *parent) +{ + if (pin) { + dput(pin->parent); + pin->parent = dget(parent); + } +} +#endif + +/* ---------------------------------------------------------------------- */ + +struct au_branch; +#ifdef CONFIG_AUFS_HNOTIFY +struct au_hnotify_op { + void (*ctl)(struct au_hinode *hinode, int do_set); + int (*alloc)(struct au_hinode *hinode); + + /* + * if it returns true, the the caller should free hinode->hi_notify, + * otherwise ->free() frees it. + */ + int (*free)(struct au_hinode *hinode, + struct au_hnotify *hn) __must_check; + + void (*fin)(void); + int (*init)(void); + + int (*reset_br)(unsigned int udba, struct au_branch *br, int perm); + void (*fin_br)(struct au_branch *br); + int (*init_br)(struct au_branch *br, int perm); +}; + +/* hnotify.c */ +int au_hn_alloc(struct au_hinode *hinode, struct inode *inode); +void au_hn_free(struct au_hinode *hinode); +void au_hn_ctl(struct au_hinode *hinode, int do_set); +void au_hn_reset(struct inode *inode, unsigned int flags); +int au_hnotify(struct inode *h_dir, struct au_hnotify *hnotify, u32 mask, + struct qstr *h_child_qstr, struct inode *h_child_inode); +int au_hnotify_reset_br(unsigned int udba, struct au_branch *br, int perm); +int au_hnotify_init_br(struct au_branch *br, int perm); +void au_hnotify_fin_br(struct au_branch *br); +int __init au_hnotify_init(void); +void au_hnotify_fin(void); + +/* hfsnotify.c */ +extern const struct au_hnotify_op au_hnotify_op; + +static inline +void au_hn_init(struct au_hinode *hinode) +{ + hinode->hi_notify = NULL; +} + +static inline struct au_hnotify *au_hn(struct au_hinode *hinode) +{ + return hinode->hi_notify; +} + +#else +AuStub(int, au_hn_alloc, return -EOPNOTSUPP, + struct au_hinode *hinode __maybe_unused, + struct inode *inode __maybe_unused) +AuStub(struct au_hnotify *, au_hn, return NULL, struct au_hinode *hinode) +AuStubVoid(au_hn_free, struct au_hinode *hinode __maybe_unused) +AuStubVoid(au_hn_ctl, struct au_hinode *hinode __maybe_unused, + int do_set __maybe_unused) +AuStubVoid(au_hn_reset, struct inode *inode __maybe_unused, + unsigned int flags __maybe_unused) +AuStubInt0(au_hnotify_reset_br, unsigned int udba __maybe_unused, + struct au_branch *br __maybe_unused, + int perm __maybe_unused) +AuStubInt0(au_hnotify_init_br, struct au_branch *br __maybe_unused, + int perm __maybe_unused) +AuStubVoid(au_hnotify_fin_br, struct au_branch *br __maybe_unused) +AuStubInt0(__init au_hnotify_init, void) +AuStubVoid(au_hnotify_fin, void) +AuStubVoid(au_hn_init, struct au_hinode *hinode __maybe_unused) +#endif /* CONFIG_AUFS_HNOTIFY */ + +static inline void au_hn_suspend(struct au_hinode *hdir) +{ + au_hn_ctl(hdir, /*do_set*/0); +} + +static inline void au_hn_resume(struct au_hinode *hdir) +{ + au_hn_ctl(hdir, /*do_set*/1); +} + +static inline void au_hn_inode_lock(struct au_hinode *hdir) +{ + inode_lock(hdir->hi_inode); + au_hn_suspend(hdir); +} + +static inline void au_hn_inode_lock_nested(struct au_hinode *hdir, + unsigned int sc __maybe_unused) +{ + inode_lock_nested(hdir->hi_inode, sc); + au_hn_suspend(hdir); +} + +#if 0 /* unused */ +#include "vfsub.h" +static inline void au_hn_inode_lock_shared_nested(struct au_hinode *hdir, + unsigned int sc) +{ + inode_lock_shared_nested(hdir->hi_inode, sc); + au_hn_suspend(hdir); +} +#endif + +static inline void au_hn_inode_unlock(struct au_hinode *hdir) +{ + au_hn_resume(hdir); + inode_unlock(hdir->hi_inode); +} + +#endif /* __KERNEL__ */ +#endif /* __AUFS_INODE_H__ */ diff --git a/fs/aufs/ioctl.c b/fs/aufs/ioctl.c new file mode 100644 index 00000000000..b244842eb03 --- /dev/null +++ b/fs/aufs/ioctl.c @@ -0,0 +1,220 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * ioctl + * plink-management and readdir in userspace. + * assist the pathconf(3) wrapper library. + * move-down + * File-based Hierarchical Storage Management. + */ + +#include +#include +#include "aufs.h" + +static int au_wbr_fd(struct path *path, struct aufs_wbr_fd __user *arg) +{ + int err, fd; + aufs_bindex_t wbi, bindex, bbot; + struct file *h_file; + struct super_block *sb; + struct dentry *root; + struct au_branch *br; + struct aufs_wbr_fd wbrfd = { + .oflags = au_dir_roflags, + .brid = -1 + }; + const int valid = O_RDONLY | O_NONBLOCK | O_LARGEFILE | O_DIRECTORY + | O_NOATIME | O_CLOEXEC; + + AuDebugOn(wbrfd.oflags & ~valid); + + if (arg) { + err = copy_from_user(&wbrfd, arg, sizeof(wbrfd)); + if (unlikely(err)) { + err = -EFAULT; + goto out; + } + + err = -EINVAL; + AuDbg("wbrfd{0%o, %d}\n", wbrfd.oflags, wbrfd.brid); + wbrfd.oflags |= au_dir_roflags; + AuDbg("0%o\n", wbrfd.oflags); + if (unlikely(wbrfd.oflags & ~valid)) + goto out; + } + + fd = get_unused_fd_flags(0); + err = fd; + if (unlikely(fd < 0)) + goto out; + + h_file = ERR_PTR(-EINVAL); + wbi = 0; + br = NULL; + sb = path->dentry->d_sb; + root = sb->s_root; + aufs_read_lock(root, AuLock_IR); + bbot = au_sbbot(sb); + if (wbrfd.brid >= 0) { + wbi = au_br_index(sb, wbrfd.brid); + if (unlikely(wbi < 0 || wbi > bbot)) + goto out_unlock; + } + + h_file = ERR_PTR(-ENOENT); + br = au_sbr(sb, wbi); + if (!au_br_writable(br->br_perm)) { + if (arg) + goto out_unlock; + + bindex = wbi + 1; + wbi = -1; + for (; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + if (au_br_writable(br->br_perm)) { + wbi = bindex; + br = au_sbr(sb, wbi); + break; + } + } + } + AuDbg("wbi %d\n", wbi); + if (wbi >= 0) + h_file = au_h_open(root, wbi, wbrfd.oflags, NULL, + /*force_wr*/0); + +out_unlock: + aufs_read_unlock(root, AuLock_IR); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out_fd; + + au_br_put(br); /* cf. au_h_open() */ + fd_install(fd, h_file); + err = fd; + goto out; /* success */ + +out_fd: + put_unused_fd(fd); +out: + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +long aufs_ioctl_dir(struct file *file, unsigned int cmd, unsigned long arg) +{ + long err; + struct dentry *dentry; + + switch (cmd) { + case AUFS_CTL_RDU: + case AUFS_CTL_RDU_INO: + err = au_rdu_ioctl(file, cmd, arg); + break; + + case AUFS_CTL_WBR_FD: + err = au_wbr_fd(&file->f_path, (void __user *)arg); + break; + + case AUFS_CTL_IBUSY: + err = au_ibusy_ioctl(file, arg); + break; + + case AUFS_CTL_BRINFO: + err = au_brinfo_ioctl(file, arg); + break; + + case AUFS_CTL_FHSM_FD: + dentry = file->f_path.dentry; + if (IS_ROOT(dentry)) + err = au_fhsm_fd(dentry->d_sb, arg); + else + err = -ENOTTY; + break; + + default: + /* do not call the lower */ + AuDbg("0x%x\n", cmd); + err = -ENOTTY; + } + + AuTraceErr(err); + return err; +} + +long aufs_ioctl_nondir(struct file *file, unsigned int cmd, unsigned long arg) +{ + long err; + + switch (cmd) { + case AUFS_CTL_MVDOWN: + err = au_mvdown(file->f_path.dentry, (void __user *)arg); + break; + + case AUFS_CTL_WBR_FD: + err = au_wbr_fd(&file->f_path, (void __user *)arg); + break; + + default: + /* do not call the lower */ + AuDbg("0x%x\n", cmd); + err = -ENOTTY; + } + + AuTraceErr(err); + return err; +} + +#ifdef CONFIG_COMPAT +long aufs_compat_ioctl_dir(struct file *file, unsigned int cmd, + unsigned long arg) +{ + long err; + + switch (cmd) { + case AUFS_CTL_RDU: + case AUFS_CTL_RDU_INO: + err = au_rdu_compat_ioctl(file, cmd, arg); + break; + + case AUFS_CTL_IBUSY: + err = au_ibusy_compat_ioctl(file, arg); + break; + + case AUFS_CTL_BRINFO: + err = au_brinfo_compat_ioctl(file, arg); + break; + + default: + err = aufs_ioctl_dir(file, cmd, arg); + } + + AuTraceErr(err); + return err; +} + +long aufs_compat_ioctl_nondir(struct file *file, unsigned int cmd, + unsigned long arg) +{ + return aufs_ioctl_nondir(file, cmd, (unsigned long)compat_ptr(arg)); +} +#endif diff --git a/fs/aufs/loop.c b/fs/aufs/loop.c new file mode 100644 index 00000000000..0c6af623a45 --- /dev/null +++ b/fs/aufs/loop.c @@ -0,0 +1,148 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * support for loopback block device as a branch + */ + +#include "aufs.h" + +/* added into drivers/block/loop.c */ +static struct file *(*backing_file_func)(struct super_block *sb); + +/* + * test if two lower dentries have overlapping branches. + */ +int au_test_loopback_overlap(struct super_block *sb, struct dentry *h_adding) +{ + struct super_block *h_sb; + struct file *backing_file; + + if (unlikely(!backing_file_func)) { + /* don't load "loop" module here */ + backing_file_func = symbol_get(loop_backing_file); + if (unlikely(!backing_file_func)) + /* "loop" module is not loaded */ + return 0; + } + + h_sb = h_adding->d_sb; + backing_file = backing_file_func(h_sb); + if (!backing_file) + return 0; + + h_adding = backing_file->f_path.dentry; + /* + * h_adding can be local NFS. + * in this case aufs cannot detect the loop. + */ + if (unlikely(h_adding->d_sb == sb)) + return 1; + return !!au_test_subdir(h_adding, sb->s_root); +} + +/* true if a kernel thread named 'loop[0-9].*' accesses a file */ +int au_test_loopback_kthread(void) +{ + int ret; + struct task_struct *tsk = current; + char c, comm[sizeof(tsk->comm)]; + + ret = 0; + if (tsk->flags & PF_KTHREAD) { + get_task_comm(comm, tsk); + c = comm[4]; + ret = ('0' <= c && c <= '9' + && !strncmp(comm, "loop", 4)); + } + + return ret; +} + +/* ---------------------------------------------------------------------- */ + +#define au_warn_loopback_step 16 +static int au_warn_loopback_nelem = au_warn_loopback_step; +static unsigned long *au_warn_loopback_array; + +void au_warn_loopback(struct super_block *h_sb) +{ + int i, new_nelem; + unsigned long *a, magic; + static DEFINE_SPINLOCK(spin); + + magic = h_sb->s_magic; + spin_lock(&spin); + a = au_warn_loopback_array; + for (i = 0; i < au_warn_loopback_nelem && *a; i++) + if (a[i] == magic) { + spin_unlock(&spin); + return; + } + + /* h_sb is new to us, print it */ + if (i < au_warn_loopback_nelem) { + a[i] = magic; + goto pr; + } + + /* expand the array */ + new_nelem = au_warn_loopback_nelem + au_warn_loopback_step; + a = au_kzrealloc(au_warn_loopback_array, + au_warn_loopback_nelem * sizeof(unsigned long), + new_nelem * sizeof(unsigned long), GFP_ATOMIC, + /*may_shrink*/0); + if (a) { + au_warn_loopback_nelem = new_nelem; + au_warn_loopback_array = a; + a[i] = magic; + goto pr; + } + + spin_unlock(&spin); + AuWarn1("realloc failed, ignored\n"); + return; + +pr: + spin_unlock(&spin); + pr_warn("you may want to try another patch for loopback file " + "on %s(0x%lx) branch\n", au_sbtype(h_sb), magic); +} + +int au_loopback_init(void) +{ + int err; + struct super_block *sb __maybe_unused; + + BUILD_BUG_ON(sizeof(sb->s_magic) != sizeof(unsigned long)); + + err = 0; + au_warn_loopback_array = kcalloc(au_warn_loopback_step, + sizeof(unsigned long), GFP_NOFS); + if (unlikely(!au_warn_loopback_array)) + err = -ENOMEM; + + return err; +} + +void au_loopback_fin(void) +{ + if (backing_file_func) + symbol_put(loop_backing_file); + kfree(au_warn_loopback_array); +} diff --git a/fs/aufs/loop.h b/fs/aufs/loop.h new file mode 100644 index 00000000000..048a6504f67 --- /dev/null +++ b/fs/aufs/loop.h @@ -0,0 +1,53 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * support for loopback mount as a branch + */ + +#ifndef __AUFS_LOOP_H__ +#define __AUFS_LOOP_H__ + +#ifdef __KERNEL__ + +struct dentry; +struct super_block; + +#ifdef CONFIG_AUFS_BDEV_LOOP +/* drivers/block/loop.c */ +struct file *loop_backing_file(struct super_block *sb); + +/* loop.c */ +int au_test_loopback_overlap(struct super_block *sb, struct dentry *h_adding); +int au_test_loopback_kthread(void); +void au_warn_loopback(struct super_block *h_sb); + +int au_loopback_init(void); +void au_loopback_fin(void); +#else +AuStubInt0(au_test_loopback_overlap, struct super_block *sb, + struct dentry *h_adding) +AuStubInt0(au_test_loopback_kthread, void) +AuStubVoid(au_warn_loopback, struct super_block *h_sb) + +AuStubInt0(au_loopback_init, void) +AuStubVoid(au_loopback_fin, void) +#endif /* BLK_DEV_LOOP */ + +#endif /* __KERNEL__ */ +#endif /* __AUFS_LOOP_H__ */ diff --git a/fs/aufs/magic.mk b/fs/aufs/magic.mk new file mode 100644 index 00000000000..7bc9eef3ffe --- /dev/null +++ b/fs/aufs/magic.mk @@ -0,0 +1,31 @@ +# SPDX-License-Identifier: GPL-2.0 + +# defined in ${srctree}/fs/fuse/inode.c +# tristate +ifdef CONFIG_FUSE_FS +ccflags-y += -DFUSE_SUPER_MAGIC=0x65735546 +endif + +# defined in ${srctree}/fs/xfs/xfs_sb.h +# tristate +ifdef CONFIG_XFS_FS +ccflags-y += -DXFS_SB_MAGIC=0x58465342 +endif + +# defined in ${srctree}/fs/configfs/mount.c +# tristate +ifdef CONFIG_CONFIGFS_FS +ccflags-y += -DCONFIGFS_MAGIC=0x62656570 +endif + +# defined in ${srctree}/fs/ubifs/ubifs.h +# tristate +ifdef CONFIG_UBIFS_FS +ccflags-y += -DUBIFS_SUPER_MAGIC=0x24051905 +endif + +# defined in ${srctree}/fs/hfsplus/hfsplus_raw.h +# tristate +ifdef CONFIG_HFSPLUS_FS +ccflags-y += -DHFSPLUS_SUPER_MAGIC=0x482b +endif diff --git a/fs/aufs/module.c b/fs/aufs/module.c new file mode 100644 index 00000000000..5f5f67e6493 --- /dev/null +++ b/fs/aufs/module.c @@ -0,0 +1,273 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * module global variables and operations + */ + +#include +#include +#include "aufs.h" + +/* shrinkable realloc */ +void *au_krealloc(void *p, unsigned int new_sz, gfp_t gfp, int may_shrink) +{ + size_t sz; + int diff; + + sz = 0; + diff = -1; + if (p) { +#if 0 /* unused */ + if (!new_sz) { + kfree(p); + p = NULL; + goto out; + } +#else + AuDebugOn(!new_sz); +#endif + sz = ksize(p); + diff = au_kmidx_sub(sz, new_sz); + } + if (sz && !diff) + goto out; + + if (sz < new_sz) + /* expand or SLOB */ + p = krealloc(p, new_sz, gfp); + else if (new_sz < sz && may_shrink) { + /* shrink */ + void *q; + + q = kmalloc(new_sz, gfp); + if (q) { + if (p) { + memcpy(q, p, new_sz); + kfree(p); + } + p = q; + } else + p = NULL; + } + +out: + return p; +} + +void *au_kzrealloc(void *p, unsigned int nused, unsigned int new_sz, gfp_t gfp, + int may_shrink) +{ + p = au_krealloc(p, new_sz, gfp, may_shrink); + if (p && new_sz > nused) + memset(p + nused, 0, new_sz - nused); + return p; +} + +/* ---------------------------------------------------------------------- */ +/* + * aufs caches + */ +struct kmem_cache *au_cache[AuCache_Last]; + +static void au_cache_fin(void) +{ + int i; + + /* + * Make sure all delayed rcu free inodes are flushed before we + * destroy cache. + */ + rcu_barrier(); + + /* excluding AuCache_HNOTIFY */ + BUILD_BUG_ON(AuCache_HNOTIFY + 1 != AuCache_Last); + for (i = 0; i < AuCache_HNOTIFY; i++) { + kmem_cache_destroy(au_cache[i]); + au_cache[i] = NULL; + } +} + +static int __init au_cache_init(void) +{ + au_cache[AuCache_DINFO] = AuCacheCtor(au_dinfo, au_di_init_once); + if (au_cache[AuCache_DINFO]) + /* SLAB_DESTROY_BY_RCU */ + au_cache[AuCache_ICNTNR] = AuCacheCtor(au_icntnr, + au_icntnr_init_once); + if (au_cache[AuCache_ICNTNR]) + au_cache[AuCache_FINFO] = AuCacheCtor(au_finfo, + au_fi_init_once); + if (au_cache[AuCache_FINFO]) + au_cache[AuCache_VDIR] = AuCache(au_vdir); + if (au_cache[AuCache_VDIR]) + au_cache[AuCache_DEHSTR] = AuCache(au_vdir_dehstr); + if (au_cache[AuCache_DEHSTR]) + return 0; + + au_cache_fin(); + return -ENOMEM; +} + +/* ---------------------------------------------------------------------- */ + +int au_dir_roflags; + +#ifdef CONFIG_AUFS_SBILIST +/* + * iterate_supers_type() doesn't protect us from + * remounting (branch management) + */ +struct hlist_bl_head au_sbilist; +#endif + +/* + * functions for module interface. + */ +MODULE_LICENSE("GPL"); +/* MODULE_LICENSE("GPL v2"); */ +MODULE_AUTHOR("Junjiro R. Okajima "); +MODULE_DESCRIPTION(AUFS_NAME + " -- Advanced multi layered unification filesystem"); +MODULE_VERSION(AUFS_VERSION); +MODULE_ALIAS_FS(AUFS_NAME); + +/* this module parameter has no meaning when SYSFS is disabled */ +int sysaufs_brs = 1; +MODULE_PARM_DESC(brs, "use /fs/aufs/si_*/brN"); +module_param_named(brs, sysaufs_brs, int, 0444); + +/* this module parameter has no meaning when USER_NS is disabled */ +bool au_userns; +MODULE_PARM_DESC(allow_userns, "allow unprivileged to mount under userns"); +module_param_named(allow_userns, au_userns, bool, 0444); + +/* ---------------------------------------------------------------------- */ + +static char au_esc_chars[0x20 + 3]; /* 0x01-0x20, backslash, del, and NULL */ + +int au_seq_path(struct seq_file *seq, struct path *path) +{ + int err; + + err = seq_path(seq, path, au_esc_chars); + if (err >= 0) + err = 0; + else + err = -ENOMEM; + + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int __init aufs_init(void) +{ + int err, i; + char *p; + + p = au_esc_chars; + for (i = 1; i <= ' '; i++) + *p++ = i; + *p++ = '\\'; + *p++ = '\x7f'; + *p = 0; + + au_dir_roflags = au_file_roflags(O_DIRECTORY | O_LARGEFILE); + + memcpy(aufs_iop_nogetattr, aufs_iop, sizeof(aufs_iop)); + for (i = 0; i < AuIop_Last; i++) + aufs_iop_nogetattr[i].getattr = NULL; + + memset(au_cache, 0, sizeof(au_cache)); /* including hnotify */ + + au_sbilist_init(); + sysaufs_brs_init(); + au_debug_init(); + au_dy_init(); + err = sysaufs_init(); + if (unlikely(err)) + goto out; + err = dbgaufs_init(); + if (unlikely(err)) + goto out_sysaufs; + err = au_procfs_init(); + if (unlikely(err)) + goto out_dbgaufs; + err = au_wkq_init(); + if (unlikely(err)) + goto out_procfs; + err = au_loopback_init(); + if (unlikely(err)) + goto out_wkq; + err = au_hnotify_init(); + if (unlikely(err)) + goto out_loopback; + err = au_sysrq_init(); + if (unlikely(err)) + goto out_hin; + err = au_cache_init(); + if (unlikely(err)) + goto out_sysrq; + + aufs_fs_type.fs_flags |= au_userns ? FS_USERNS_MOUNT : 0; + err = register_filesystem(&aufs_fs_type); + if (unlikely(err)) + goto out_cache; + + /* since we define pr_fmt, call printk directly */ + printk(KERN_INFO AUFS_NAME " " AUFS_VERSION "\n"); + goto out; /* success */ + +out_cache: + au_cache_fin(); +out_sysrq: + au_sysrq_fin(); +out_hin: + au_hnotify_fin(); +out_loopback: + au_loopback_fin(); +out_wkq: + au_wkq_fin(); +out_procfs: + au_procfs_fin(); +out_dbgaufs: + dbgaufs_fin(); +out_sysaufs: + sysaufs_fin(); + au_dy_fin(); +out: + return err; +} + +static void __exit aufs_exit(void) +{ + unregister_filesystem(&aufs_fs_type); + au_cache_fin(); + au_sysrq_fin(); + au_hnotify_fin(); + au_loopback_fin(); + au_wkq_fin(); + au_procfs_fin(); + dbgaufs_fin(); + sysaufs_fin(); + au_dy_fin(); +} + +module_init(aufs_init); +module_exit(aufs_exit); diff --git a/fs/aufs/module.h b/fs/aufs/module.h new file mode 100644 index 00000000000..00076104935 --- /dev/null +++ b/fs/aufs/module.h @@ -0,0 +1,102 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * module initialization and module-global + */ + +#ifndef __AUFS_MODULE_H__ +#define __AUFS_MODULE_H__ + +#ifdef __KERNEL__ + +#include + +struct path; +struct seq_file; + +/* module parameters */ +extern int sysaufs_brs; +extern bool au_userns; + +/* ---------------------------------------------------------------------- */ + +extern int au_dir_roflags; + +void *au_krealloc(void *p, unsigned int new_sz, gfp_t gfp, int may_shrink); +void *au_kzrealloc(void *p, unsigned int nused, unsigned int new_sz, gfp_t gfp, + int may_shrink); + +static inline int au_kmidx_sub(size_t sz, size_t new_sz) +{ +#ifndef CONFIG_SLOB + return kmalloc_index(sz) - kmalloc_index(new_sz); +#else + return -1; /* SLOB is untested */ +#endif +} + +int au_seq_path(struct seq_file *seq, struct path *path); + +#ifdef CONFIG_PROC_FS +/* procfs.c */ +int __init au_procfs_init(void); +void au_procfs_fin(void); +#else +AuStubInt0(au_procfs_init, void); +AuStubVoid(au_procfs_fin, void); +#endif + +/* ---------------------------------------------------------------------- */ + +/* kmem cache */ +enum { + AuCache_DINFO, + AuCache_ICNTNR, + AuCache_FINFO, + AuCache_VDIR, + AuCache_DEHSTR, + AuCache_HNOTIFY, /* must be last */ + AuCache_Last +}; + +extern struct kmem_cache *au_cache[AuCache_Last]; + +#define AuCacheFlags (SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD) +#define AuCache(type) KMEM_CACHE(type, AuCacheFlags) +#define AuCacheCtor(type, ctor) \ + kmem_cache_create(#type, sizeof(struct type), \ + __alignof__(struct type), AuCacheFlags, ctor) + +#define AuCacheFuncs(name, index) \ +static inline struct au_##name *au_cache_alloc_##name(void) \ +{ return kmem_cache_alloc(au_cache[AuCache_##index], GFP_NOFS); } \ +static inline void au_cache_free_##name(struct au_##name *p) \ +{ kmem_cache_free(au_cache[AuCache_##index], p); } + +AuCacheFuncs(dinfo, DINFO); +AuCacheFuncs(icntnr, ICNTNR); +AuCacheFuncs(finfo, FINFO); +AuCacheFuncs(vdir, VDIR); +AuCacheFuncs(vdir_dehstr, DEHSTR); +#ifdef CONFIG_AUFS_HNOTIFY +AuCacheFuncs(hnotify, HNOTIFY); +#endif + +#endif /* __KERNEL__ */ +#endif /* __AUFS_MODULE_H__ */ diff --git a/fs/aufs/mvdown.c b/fs/aufs/mvdown.c new file mode 100644 index 00000000000..9603ef7395e --- /dev/null +++ b/fs/aufs/mvdown.c @@ -0,0 +1,705 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2011-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * move-down, opposite of copy-up + */ + +#include "aufs.h" + +struct au_mvd_args { + struct { + struct super_block *h_sb; + struct dentry *h_parent; + struct au_hinode *hdir; + struct inode *h_dir, *h_inode; + struct au_pin pin; + } info[AUFS_MVDOWN_NARRAY]; + + struct aufs_mvdown mvdown; + struct dentry *dentry, *parent; + struct inode *inode, *dir; + struct super_block *sb; + aufs_bindex_t bopq, bwh, bfound; + unsigned char rename_lock; +}; + +#define mvd_errno mvdown.au_errno +#define mvd_bsrc mvdown.stbr[AUFS_MVDOWN_UPPER].bindex +#define mvd_src_brid mvdown.stbr[AUFS_MVDOWN_UPPER].brid +#define mvd_bdst mvdown.stbr[AUFS_MVDOWN_LOWER].bindex +#define mvd_dst_brid mvdown.stbr[AUFS_MVDOWN_LOWER].brid + +#define mvd_h_src_sb info[AUFS_MVDOWN_UPPER].h_sb +#define mvd_h_src_parent info[AUFS_MVDOWN_UPPER].h_parent +#define mvd_hdir_src info[AUFS_MVDOWN_UPPER].hdir +#define mvd_h_src_dir info[AUFS_MVDOWN_UPPER].h_dir +#define mvd_h_src_inode info[AUFS_MVDOWN_UPPER].h_inode +#define mvd_pin_src info[AUFS_MVDOWN_UPPER].pin + +#define mvd_h_dst_sb info[AUFS_MVDOWN_LOWER].h_sb +#define mvd_h_dst_parent info[AUFS_MVDOWN_LOWER].h_parent +#define mvd_hdir_dst info[AUFS_MVDOWN_LOWER].hdir +#define mvd_h_dst_dir info[AUFS_MVDOWN_LOWER].h_dir +#define mvd_h_dst_inode info[AUFS_MVDOWN_LOWER].h_inode +#define mvd_pin_dst info[AUFS_MVDOWN_LOWER].pin + +#define AU_MVD_PR(flag, ...) do { \ + if (flag) \ + pr_err(__VA_ARGS__); \ + } while (0) + +static int find_lower_writable(struct au_mvd_args *a) +{ + struct super_block *sb; + aufs_bindex_t bindex, bbot; + struct au_branch *br; + + sb = a->sb; + bindex = a->mvd_bsrc; + bbot = au_sbbot(sb); + if (a->mvdown.flags & AUFS_MVDOWN_FHSM_LOWER) + for (bindex++; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + if (au_br_fhsm(br->br_perm) + && !sb_rdonly(au_br_sb(br))) + return bindex; + } + else if (!(a->mvdown.flags & AUFS_MVDOWN_ROLOWER)) + for (bindex++; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + if (!au_br_rdonly(br)) + return bindex; + } + else + for (bindex++; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + if (!sb_rdonly(au_br_sb(br))) { + if (au_br_rdonly(br)) + a->mvdown.flags + |= AUFS_MVDOWN_ROLOWER_R; + return bindex; + } + } + + return -1; +} + +/* make the parent dir on bdst */ +static int au_do_mkdir(const unsigned char dmsg, struct au_mvd_args *a) +{ + int err; + + err = 0; + a->mvd_hdir_src = au_hi(a->dir, a->mvd_bsrc); + a->mvd_hdir_dst = au_hi(a->dir, a->mvd_bdst); + a->mvd_h_src_parent = au_h_dptr(a->parent, a->mvd_bsrc); + a->mvd_h_dst_parent = NULL; + if (au_dbbot(a->parent) >= a->mvd_bdst) + a->mvd_h_dst_parent = au_h_dptr(a->parent, a->mvd_bdst); + if (!a->mvd_h_dst_parent) { + err = au_cpdown_dirs(a->dentry, a->mvd_bdst); + if (unlikely(err)) { + AU_MVD_PR(dmsg, "cpdown_dirs failed\n"); + goto out; + } + a->mvd_h_dst_parent = au_h_dptr(a->parent, a->mvd_bdst); + } + +out: + AuTraceErr(err); + return err; +} + +/* lock them all */ +static int au_do_lock(const unsigned char dmsg, struct au_mvd_args *a) +{ + int err; + struct dentry *h_trap; + + a->mvd_h_src_sb = au_sbr_sb(a->sb, a->mvd_bsrc); + a->mvd_h_dst_sb = au_sbr_sb(a->sb, a->mvd_bdst); + err = au_pin(&a->mvd_pin_dst, a->dentry, a->mvd_bdst, + au_opt_udba(a->sb), + AuPin_MNT_WRITE | AuPin_DI_LOCKED); + AuTraceErr(err); + if (unlikely(err)) { + AU_MVD_PR(dmsg, "pin_dst failed\n"); + goto out; + } + + if (a->mvd_h_src_sb != a->mvd_h_dst_sb) { + a->rename_lock = 0; + au_pin_init(&a->mvd_pin_src, a->dentry, a->mvd_bsrc, + AuLsc_DI_PARENT, AuLsc_I_PARENT3, + au_opt_udba(a->sb), + AuPin_MNT_WRITE | AuPin_DI_LOCKED); + err = au_do_pin(&a->mvd_pin_src); + AuTraceErr(err); + a->mvd_h_src_dir = d_inode(a->mvd_h_src_parent); + if (unlikely(err)) { + AU_MVD_PR(dmsg, "pin_src failed\n"); + goto out_dst; + } + goto out; /* success */ + } + + a->rename_lock = 1; + au_pin_hdir_unlock(&a->mvd_pin_dst); + err = au_pin(&a->mvd_pin_src, a->dentry, a->mvd_bsrc, + au_opt_udba(a->sb), + AuPin_MNT_WRITE | AuPin_DI_LOCKED); + AuTraceErr(err); + a->mvd_h_src_dir = d_inode(a->mvd_h_src_parent); + if (unlikely(err)) { + AU_MVD_PR(dmsg, "pin_src failed\n"); + au_pin_hdir_lock(&a->mvd_pin_dst); + goto out_dst; + } + au_pin_hdir_unlock(&a->mvd_pin_src); + h_trap = vfsub_lock_rename(a->mvd_h_src_parent, a->mvd_hdir_src, + a->mvd_h_dst_parent, a->mvd_hdir_dst); + if (h_trap) { + err = (h_trap != a->mvd_h_src_parent); + if (err) + err = (h_trap != a->mvd_h_dst_parent); + } + BUG_ON(err); /* it should never happen */ + if (unlikely(a->mvd_h_src_dir != au_pinned_h_dir(&a->mvd_pin_src))) { + err = -EBUSY; + AuTraceErr(err); + vfsub_unlock_rename(a->mvd_h_src_parent, a->mvd_hdir_src, + a->mvd_h_dst_parent, a->mvd_hdir_dst); + au_pin_hdir_lock(&a->mvd_pin_src); + au_unpin(&a->mvd_pin_src); + au_pin_hdir_lock(&a->mvd_pin_dst); + goto out_dst; + } + goto out; /* success */ + +out_dst: + au_unpin(&a->mvd_pin_dst); +out: + AuTraceErr(err); + return err; +} + +static void au_do_unlock(const unsigned char dmsg, struct au_mvd_args *a) +{ + if (!a->rename_lock) + au_unpin(&a->mvd_pin_src); + else { + vfsub_unlock_rename(a->mvd_h_src_parent, a->mvd_hdir_src, + a->mvd_h_dst_parent, a->mvd_hdir_dst); + au_pin_hdir_lock(&a->mvd_pin_src); + au_unpin(&a->mvd_pin_src); + au_pin_hdir_lock(&a->mvd_pin_dst); + } + au_unpin(&a->mvd_pin_dst); +} + +/* copy-down the file */ +static int au_do_cpdown(const unsigned char dmsg, struct au_mvd_args *a) +{ + int err; + struct au_cp_generic cpg = { + .dentry = a->dentry, + .bdst = a->mvd_bdst, + .bsrc = a->mvd_bsrc, + .len = -1, + .pin = &a->mvd_pin_dst, + .flags = AuCpup_DTIME | AuCpup_HOPEN + }; + + AuDbg("b%d, b%d\n", cpg.bsrc, cpg.bdst); + if (a->mvdown.flags & AUFS_MVDOWN_OWLOWER) + au_fset_cpup(cpg.flags, OVERWRITE); + if (a->mvdown.flags & AUFS_MVDOWN_ROLOWER) + au_fset_cpup(cpg.flags, RWDST); + err = au_sio_cpdown_simple(&cpg); + if (unlikely(err)) + AU_MVD_PR(dmsg, "cpdown failed\n"); + + AuTraceErr(err); + return err; +} + +/* + * unlink the whiteout on bdst if exist which may be created by UDBA while we + * were sleeping + */ +static int au_do_unlink_wh(const unsigned char dmsg, struct au_mvd_args *a) +{ + int err; + struct path h_path; + struct au_branch *br; + struct inode *delegated; + + br = au_sbr(a->sb, a->mvd_bdst); + h_path.dentry = au_wh_lkup(a->mvd_h_dst_parent, &a->dentry->d_name, br); + err = PTR_ERR(h_path.dentry); + if (IS_ERR(h_path.dentry)) { + AU_MVD_PR(dmsg, "wh_lkup failed\n"); + goto out; + } + + err = 0; + if (d_is_positive(h_path.dentry)) { + h_path.mnt = au_br_mnt(br); + delegated = NULL; + err = vfsub_unlink(d_inode(a->mvd_h_dst_parent), &h_path, + &delegated, /*force*/0); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal unlink\n"); + iput(delegated); + } + if (unlikely(err)) + AU_MVD_PR(dmsg, "wh_unlink failed\n"); + } + dput(h_path.dentry); + +out: + AuTraceErr(err); + return err; +} + +/* + * unlink the topmost h_dentry + */ +static int au_do_unlink(const unsigned char dmsg, struct au_mvd_args *a) +{ + int err; + struct path h_path; + struct inode *delegated; + + h_path.mnt = au_sbr_mnt(a->sb, a->mvd_bsrc); + h_path.dentry = au_h_dptr(a->dentry, a->mvd_bsrc); + delegated = NULL; + err = vfsub_unlink(a->mvd_h_src_dir, &h_path, &delegated, /*force*/0); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal unlink\n"); + iput(delegated); + } + if (unlikely(err)) + AU_MVD_PR(dmsg, "unlink failed\n"); + + AuTraceErr(err); + return err; +} + +/* Since mvdown succeeded, we ignore an error of this function */ +static void au_do_stfs(const unsigned char dmsg, struct au_mvd_args *a) +{ + int err; + struct au_branch *br; + + a->mvdown.flags |= AUFS_MVDOWN_STFS_FAILED; + br = au_sbr(a->sb, a->mvd_bsrc); + err = au_br_stfs(br, &a->mvdown.stbr[AUFS_MVDOWN_UPPER].stfs); + if (!err) { + br = au_sbr(a->sb, a->mvd_bdst); + a->mvdown.stbr[AUFS_MVDOWN_LOWER].brid = br->br_id; + err = au_br_stfs(br, &a->mvdown.stbr[AUFS_MVDOWN_LOWER].stfs); + } + if (!err) + a->mvdown.flags &= ~AUFS_MVDOWN_STFS_FAILED; + else + AU_MVD_PR(dmsg, "statfs failed (%d), ignored\n", err); +} + +/* + * copy-down the file and unlink the bsrc file. + * - unlink the bdst whout if exist + * - copy-down the file (with whtmp name and rename) + * - unlink the bsrc file + */ +static int au_do_mvdown(const unsigned char dmsg, struct au_mvd_args *a) +{ + int err; + + err = au_do_mkdir(dmsg, a); + if (!err) + err = au_do_lock(dmsg, a); + if (unlikely(err)) + goto out; + + /* + * do not revert the activities we made on bdst since they should be + * harmless in aufs. + */ + + err = au_do_cpdown(dmsg, a); + if (!err) + err = au_do_unlink_wh(dmsg, a); + if (!err && !(a->mvdown.flags & AUFS_MVDOWN_KUPPER)) + err = au_do_unlink(dmsg, a); + if (unlikely(err)) + goto out_unlock; + + AuDbg("%pd2, 0x%x, %d --> %d\n", + a->dentry, a->mvdown.flags, a->mvd_bsrc, a->mvd_bdst); + if (find_lower_writable(a) < 0) + a->mvdown.flags |= AUFS_MVDOWN_BOTTOM; + + if (a->mvdown.flags & AUFS_MVDOWN_STFS) + au_do_stfs(dmsg, a); + + /* maintain internal array */ + if (!(a->mvdown.flags & AUFS_MVDOWN_KUPPER)) { + au_set_h_dptr(a->dentry, a->mvd_bsrc, NULL); + au_set_dbtop(a->dentry, a->mvd_bdst); + au_set_h_iptr(a->inode, a->mvd_bsrc, NULL, /*flags*/0); + au_set_ibtop(a->inode, a->mvd_bdst); + } else { + /* hide the lower */ + au_set_h_dptr(a->dentry, a->mvd_bdst, NULL); + au_set_dbbot(a->dentry, a->mvd_bsrc); + au_set_h_iptr(a->inode, a->mvd_bdst, NULL, /*flags*/0); + au_set_ibbot(a->inode, a->mvd_bsrc); + } + if (au_dbbot(a->dentry) < a->mvd_bdst) + au_set_dbbot(a->dentry, a->mvd_bdst); + if (au_ibbot(a->inode) < a->mvd_bdst) + au_set_ibbot(a->inode, a->mvd_bdst); + +out_unlock: + au_do_unlock(dmsg, a); +out: + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* make sure the file is idle */ +static int au_mvd_args_busy(const unsigned char dmsg, struct au_mvd_args *a) +{ + int err, plinked; + + err = 0; + plinked = !!au_opt_test(au_mntflags(a->sb), PLINK); + if (au_dbtop(a->dentry) == a->mvd_bsrc + && au_dcount(a->dentry) == 1 + && atomic_read(&a->inode->i_count) == 1 + /* && a->mvd_h_src_inode->i_nlink == 1 */ + && (!plinked || !au_plink_test(a->inode)) + && a->inode->i_nlink == 1) + goto out; + + err = -EBUSY; + AU_MVD_PR(dmsg, + "b%d, d{b%d, c%d?}, i{c%d?, l%u}, hi{l%u}, p{%d, %d}\n", + a->mvd_bsrc, au_dbtop(a->dentry), au_dcount(a->dentry), + atomic_read(&a->inode->i_count), a->inode->i_nlink, + a->mvd_h_src_inode->i_nlink, + plinked, plinked ? au_plink_test(a->inode) : 0); + +out: + AuTraceErr(err); + return err; +} + +/* make sure the parent dir is fine */ +static int au_mvd_args_parent(const unsigned char dmsg, + struct au_mvd_args *a) +{ + int err; + aufs_bindex_t bindex; + + err = 0; + if (unlikely(au_alive_dir(a->parent))) { + err = -ENOENT; + AU_MVD_PR(dmsg, "parent dir is dead\n"); + goto out; + } + + a->bopq = au_dbdiropq(a->parent); + bindex = au_wbr_nonopq(a->dentry, a->mvd_bdst); + AuDbg("b%d\n", bindex); + if (unlikely((bindex >= 0 && bindex < a->mvd_bdst) + || (a->bopq != -1 && a->bopq < a->mvd_bdst))) { + err = -EINVAL; + a->mvd_errno = EAU_MVDOWN_OPAQUE; + AU_MVD_PR(dmsg, "ancestor is opaque b%d, b%d\n", + a->bopq, a->mvd_bdst); + } + +out: + AuTraceErr(err); + return err; +} + +static int au_mvd_args_intermediate(const unsigned char dmsg, + struct au_mvd_args *a) +{ + int err; + struct au_dinfo *dinfo, *tmp; + + /* lookup the next lower positive entry */ + err = -ENOMEM; + tmp = au_di_alloc(a->sb, AuLsc_DI_TMP); + if (unlikely(!tmp)) + goto out; + + a->bfound = -1; + a->bwh = -1; + dinfo = au_di(a->dentry); + au_di_cp(tmp, dinfo); + au_di_swap(tmp, dinfo); + + /* returns the number of positive dentries */ + err = au_lkup_dentry(a->dentry, a->mvd_bsrc + 1, + /* AuLkup_IGNORE_PERM */ 0); + if (!err) + a->bwh = au_dbwh(a->dentry); + else if (err > 0) + a->bfound = au_dbtop(a->dentry); + + au_di_swap(tmp, dinfo); + au_rw_write_unlock(&tmp->di_rwsem); + au_di_free(tmp); + if (unlikely(err < 0)) + AU_MVD_PR(dmsg, "failed look-up lower\n"); + + /* + * here, we have these cases. + * bfound == -1 + * no positive dentry under bsrc. there are more sub-cases. + * bwh < 0 + * there no whiteout, we can safely move-down. + * bwh <= bsrc + * impossible + * bsrc < bwh && bwh < bdst + * there is a whiteout on RO branch. cannot proceed. + * bwh == bdst + * there is a whiteout on the RW target branch. it should + * be removed. + * bdst < bwh + * there is a whiteout somewhere unrelated branch. + * -1 < bfound && bfound <= bsrc + * impossible. + * bfound < bdst + * found, but it is on RO branch between bsrc and bdst. cannot + * proceed. + * bfound == bdst + * found, replace it if AUFS_MVDOWN_FORCE is set. otherwise return + * error. + * bdst < bfound + * found, after we create the file on bdst, it will be hidden. + */ + + AuDebugOn(a->bfound == -1 + && a->bwh != -1 + && a->bwh <= a->mvd_bsrc); + AuDebugOn(-1 < a->bfound + && a->bfound <= a->mvd_bsrc); + + err = -EINVAL; + if (a->bfound == -1 + && a->mvd_bsrc < a->bwh + && a->bwh != -1 + && a->bwh < a->mvd_bdst) { + a->mvd_errno = EAU_MVDOWN_WHITEOUT; + AU_MVD_PR(dmsg, "bsrc %d, bdst %d, bfound %d, bwh %d\n", + a->mvd_bsrc, a->mvd_bdst, a->bfound, a->bwh); + goto out; + } else if (a->bfound != -1 && a->bfound < a->mvd_bdst) { + a->mvd_errno = EAU_MVDOWN_UPPER; + AU_MVD_PR(dmsg, "bdst %d, bfound %d\n", + a->mvd_bdst, a->bfound); + goto out; + } + + err = 0; /* success */ + +out: + AuTraceErr(err); + return err; +} + +static int au_mvd_args_exist(const unsigned char dmsg, struct au_mvd_args *a) +{ + int err; + + err = 0; + if (!(a->mvdown.flags & AUFS_MVDOWN_OWLOWER) + && a->bfound == a->mvd_bdst) + err = -EEXIST; + AuTraceErr(err); + return err; +} + +static int au_mvd_args(const unsigned char dmsg, struct au_mvd_args *a) +{ + int err; + struct au_branch *br; + + err = -EISDIR; + if (unlikely(S_ISDIR(a->inode->i_mode))) + goto out; + + err = -EINVAL; + if (!(a->mvdown.flags & AUFS_MVDOWN_BRID_UPPER)) + a->mvd_bsrc = au_ibtop(a->inode); + else { + a->mvd_bsrc = au_br_index(a->sb, a->mvd_src_brid); + if (unlikely(a->mvd_bsrc < 0 + || (a->mvd_bsrc < au_dbtop(a->dentry) + || au_dbbot(a->dentry) < a->mvd_bsrc + || !au_h_dptr(a->dentry, a->mvd_bsrc)) + || (a->mvd_bsrc < au_ibtop(a->inode) + || au_ibbot(a->inode) < a->mvd_bsrc + || !au_h_iptr(a->inode, a->mvd_bsrc)))) { + a->mvd_errno = EAU_MVDOWN_NOUPPER; + AU_MVD_PR(dmsg, "no upper\n"); + goto out; + } + } + if (unlikely(a->mvd_bsrc == au_sbbot(a->sb))) { + a->mvd_errno = EAU_MVDOWN_BOTTOM; + AU_MVD_PR(dmsg, "on the bottom\n"); + goto out; + } + a->mvd_h_src_inode = au_h_iptr(a->inode, a->mvd_bsrc); + br = au_sbr(a->sb, a->mvd_bsrc); + err = au_br_rdonly(br); + if (!(a->mvdown.flags & AUFS_MVDOWN_ROUPPER)) { + if (unlikely(err)) + goto out; + } else if (!(vfsub_native_ro(a->mvd_h_src_inode) + || IS_APPEND(a->mvd_h_src_inode))) { + if (err) + a->mvdown.flags |= AUFS_MVDOWN_ROUPPER_R; + /* go on */ + } else + goto out; + + err = -EINVAL; + if (!(a->mvdown.flags & AUFS_MVDOWN_BRID_LOWER)) { + a->mvd_bdst = find_lower_writable(a); + if (unlikely(a->mvd_bdst < 0)) { + a->mvd_errno = EAU_MVDOWN_BOTTOM; + AU_MVD_PR(dmsg, "no writable lower branch\n"); + goto out; + } + } else { + a->mvd_bdst = au_br_index(a->sb, a->mvd_dst_brid); + if (unlikely(a->mvd_bdst < 0 + || au_sbbot(a->sb) < a->mvd_bdst)) { + a->mvd_errno = EAU_MVDOWN_NOLOWERBR; + AU_MVD_PR(dmsg, "no lower brid\n"); + goto out; + } + } + + err = au_mvd_args_busy(dmsg, a); + if (!err) + err = au_mvd_args_parent(dmsg, a); + if (!err) + err = au_mvd_args_intermediate(dmsg, a); + if (!err) + err = au_mvd_args_exist(dmsg, a); + if (!err) + AuDbg("b%d, b%d\n", a->mvd_bsrc, a->mvd_bdst); + +out: + AuTraceErr(err); + return err; +} + +int au_mvdown(struct dentry *dentry, struct aufs_mvdown __user *uarg) +{ + int err, e; + unsigned char dmsg; + struct au_mvd_args *args; + struct inode *inode; + + inode = d_inode(dentry); + err = -EPERM; + if (unlikely(!capable(CAP_SYS_ADMIN))) + goto out; + + err = -ENOMEM; + args = kmalloc(sizeof(*args), GFP_NOFS); + if (unlikely(!args)) + goto out; + + err = copy_from_user(&args->mvdown, uarg, sizeof(args->mvdown)); + if (!err) + err = !access_ok(VERIFY_WRITE, uarg, sizeof(*uarg)); + if (unlikely(err)) { + err = -EFAULT; + AuTraceErr(err); + goto out_free; + } + AuDbg("flags 0x%x\n", args->mvdown.flags); + args->mvdown.flags &= ~(AUFS_MVDOWN_ROLOWER_R | AUFS_MVDOWN_ROUPPER_R); + args->mvdown.au_errno = 0; + args->dentry = dentry; + args->inode = inode; + args->sb = dentry->d_sb; + + err = -ENOENT; + dmsg = !!(args->mvdown.flags & AUFS_MVDOWN_DMSG); + args->parent = dget_parent(dentry); + args->dir = d_inode(args->parent); + inode_lock_nested(args->dir, I_MUTEX_PARENT); + dput(args->parent); + if (unlikely(args->parent != dentry->d_parent)) { + AU_MVD_PR(dmsg, "parent dir is moved\n"); + goto out_dir; + } + + inode_lock_nested(inode, I_MUTEX_CHILD); + err = aufs_read_lock(dentry, AuLock_DW | AuLock_FLUSH | AuLock_NOPLMW); + if (unlikely(err)) + goto out_inode; + + di_write_lock_parent(args->parent); + err = au_mvd_args(dmsg, args); + if (unlikely(err)) + goto out_parent; + + err = au_do_mvdown(dmsg, args); + if (unlikely(err)) + goto out_parent; + + au_cpup_attr_timesizes(args->dir); + au_cpup_attr_timesizes(inode); + if (!(args->mvdown.flags & AUFS_MVDOWN_KUPPER)) + au_cpup_igen(inode, au_h_iptr(inode, args->mvd_bdst)); + /* au_digen_dec(dentry); */ + +out_parent: + di_write_unlock(args->parent); + aufs_read_unlock(dentry, AuLock_DW); +out_inode: + inode_unlock(inode); +out_dir: + inode_unlock(args->dir); +out_free: + e = copy_to_user(uarg, &args->mvdown, sizeof(args->mvdown)); + if (unlikely(e)) + err = -EFAULT; + kfree(args); +out: + AuTraceErr(err); + return err; +} diff --git a/fs/aufs/opts.c b/fs/aufs/opts.c new file mode 100644 index 00000000000..e1f152a50da --- /dev/null +++ b/fs/aufs/opts.c @@ -0,0 +1,1891 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * mount options/flags + */ + +#include +#include /* a distribution requires */ +#include +#include "aufs.h" + +/* ---------------------------------------------------------------------- */ + +enum { + Opt_br, + Opt_add, Opt_del, Opt_mod, Opt_append, Opt_prepend, + Opt_idel, Opt_imod, + Opt_dirwh, Opt_rdcache, Opt_rdblk, Opt_rdhash, + Opt_rdblk_def, Opt_rdhash_def, + Opt_xino, Opt_noxino, + Opt_trunc_xino, Opt_trunc_xino_v, Opt_notrunc_xino, + Opt_trunc_xino_path, Opt_itrunc_xino, + Opt_trunc_xib, Opt_notrunc_xib, + Opt_shwh, Opt_noshwh, + Opt_plink, Opt_noplink, Opt_list_plink, + Opt_udba, + Opt_dio, Opt_nodio, + Opt_diropq_a, Opt_diropq_w, + Opt_warn_perm, Opt_nowarn_perm, + Opt_wbr_copyup, Opt_wbr_create, + Opt_fhsm_sec, + Opt_verbose, Opt_noverbose, + Opt_sum, Opt_nosum, Opt_wsum, + Opt_dirperm1, Opt_nodirperm1, + Opt_dirren, Opt_nodirren, + Opt_acl, Opt_noacl, + Opt_tail, Opt_ignore, Opt_ignore_silent, Opt_err +}; + +static match_table_t options = { + {Opt_br, "br=%s"}, + {Opt_br, "br:%s"}, + + {Opt_add, "add=%d:%s"}, + {Opt_add, "add:%d:%s"}, + {Opt_add, "ins=%d:%s"}, + {Opt_add, "ins:%d:%s"}, + {Opt_append, "append=%s"}, + {Opt_append, "append:%s"}, + {Opt_prepend, "prepend=%s"}, + {Opt_prepend, "prepend:%s"}, + + {Opt_del, "del=%s"}, + {Opt_del, "del:%s"}, + /* {Opt_idel, "idel:%d"}, */ + {Opt_mod, "mod=%s"}, + {Opt_mod, "mod:%s"}, + /* {Opt_imod, "imod:%d:%s"}, */ + + {Opt_dirwh, "dirwh=%d"}, + + {Opt_xino, "xino=%s"}, + {Opt_noxino, "noxino"}, + {Opt_trunc_xino, "trunc_xino"}, + {Opt_trunc_xino_v, "trunc_xino_v=%d:%d"}, + {Opt_notrunc_xino, "notrunc_xino"}, + {Opt_trunc_xino_path, "trunc_xino=%s"}, + {Opt_itrunc_xino, "itrunc_xino=%d"}, + /* {Opt_zxino, "zxino=%s"}, */ + {Opt_trunc_xib, "trunc_xib"}, + {Opt_notrunc_xib, "notrunc_xib"}, + +#ifdef CONFIG_PROC_FS + {Opt_plink, "plink"}, +#else + {Opt_ignore_silent, "plink"}, +#endif + + {Opt_noplink, "noplink"}, + +#ifdef CONFIG_AUFS_DEBUG + {Opt_list_plink, "list_plink"}, +#endif + + {Opt_udba, "udba=%s"}, + + {Opt_dio, "dio"}, + {Opt_nodio, "nodio"}, + +#ifdef CONFIG_AUFS_DIRREN + {Opt_dirren, "dirren"}, + {Opt_nodirren, "nodirren"}, +#else + {Opt_ignore, "dirren"}, + {Opt_ignore_silent, "nodirren"}, +#endif + +#ifdef CONFIG_AUFS_FHSM + {Opt_fhsm_sec, "fhsm_sec=%d"}, +#else + {Opt_ignore, "fhsm_sec=%d"}, +#endif + + {Opt_diropq_a, "diropq=always"}, + {Opt_diropq_a, "diropq=a"}, + {Opt_diropq_w, "diropq=whiteouted"}, + {Opt_diropq_w, "diropq=w"}, + + {Opt_warn_perm, "warn_perm"}, + {Opt_nowarn_perm, "nowarn_perm"}, + + /* keep them temporary */ + {Opt_ignore_silent, "nodlgt"}, + {Opt_ignore, "clean_plink"}, + +#ifdef CONFIG_AUFS_SHWH + {Opt_shwh, "shwh"}, +#endif + {Opt_noshwh, "noshwh"}, + + {Opt_dirperm1, "dirperm1"}, + {Opt_nodirperm1, "nodirperm1"}, + + {Opt_verbose, "verbose"}, + {Opt_verbose, "v"}, + {Opt_noverbose, "noverbose"}, + {Opt_noverbose, "quiet"}, + {Opt_noverbose, "q"}, + {Opt_noverbose, "silent"}, + + {Opt_sum, "sum"}, + {Opt_nosum, "nosum"}, + {Opt_wsum, "wsum"}, + + {Opt_rdcache, "rdcache=%d"}, + {Opt_rdblk, "rdblk=%d"}, + {Opt_rdblk_def, "rdblk=def"}, + {Opt_rdhash, "rdhash=%d"}, + {Opt_rdhash_def, "rdhash=def"}, + + {Opt_wbr_create, "create=%s"}, + {Opt_wbr_create, "create_policy=%s"}, + {Opt_wbr_copyup, "cpup=%s"}, + {Opt_wbr_copyup, "copyup=%s"}, + {Opt_wbr_copyup, "copyup_policy=%s"}, + + /* generic VFS flag */ +#ifdef CONFIG_FS_POSIX_ACL + {Opt_acl, "acl"}, + {Opt_noacl, "noacl"}, +#else + {Opt_ignore, "acl"}, + {Opt_ignore_silent, "noacl"}, +#endif + + /* internal use for the scripts */ + {Opt_ignore_silent, "si=%s"}, + + {Opt_br, "dirs=%s"}, + {Opt_ignore, "debug=%d"}, + {Opt_ignore, "delete=whiteout"}, + {Opt_ignore, "delete=all"}, + {Opt_ignore, "imap=%s"}, + + /* temporary workaround, due to old mount(8)? */ + {Opt_ignore_silent, "relatime"}, + + {Opt_err, NULL} +}; + +/* ---------------------------------------------------------------------- */ + +static const char *au_parser_pattern(int val, match_table_t tbl) +{ + struct match_token *p; + + p = tbl; + while (p->pattern) { + if (p->token == val) + return p->pattern; + p++; + } + BUG(); + return "??"; +} + +static const char *au_optstr(int *val, match_table_t tbl) +{ + struct match_token *p; + int v; + + v = *val; + if (!v) + goto out; + p = tbl; + while (p->pattern) { + if (p->token + && (v & p->token) == p->token) { + *val &= ~p->token; + return p->pattern; + } + p++; + } + +out: + return NULL; +} + +/* ---------------------------------------------------------------------- */ + +static match_table_t brperm = { + {AuBrPerm_RO, AUFS_BRPERM_RO}, + {AuBrPerm_RR, AUFS_BRPERM_RR}, + {AuBrPerm_RW, AUFS_BRPERM_RW}, + {0, NULL} +}; + +static match_table_t brattr = { + /* general */ + {AuBrAttr_COO_REG, AUFS_BRATTR_COO_REG}, + {AuBrAttr_COO_ALL, AUFS_BRATTR_COO_ALL}, + /* 'unpin' attrib is meaningless since linux-3.18-rc1 */ + {AuBrAttr_UNPIN, AUFS_BRATTR_UNPIN}, +#ifdef CONFIG_AUFS_FHSM + {AuBrAttr_FHSM, AUFS_BRATTR_FHSM}, +#endif +#ifdef CONFIG_AUFS_XATTR + {AuBrAttr_ICEX, AUFS_BRATTR_ICEX}, + {AuBrAttr_ICEX_SEC, AUFS_BRATTR_ICEX_SEC}, + {AuBrAttr_ICEX_SYS, AUFS_BRATTR_ICEX_SYS}, + {AuBrAttr_ICEX_TR, AUFS_BRATTR_ICEX_TR}, + {AuBrAttr_ICEX_USR, AUFS_BRATTR_ICEX_USR}, + {AuBrAttr_ICEX_OTH, AUFS_BRATTR_ICEX_OTH}, +#endif + + /* ro/rr branch */ + {AuBrRAttr_WH, AUFS_BRRATTR_WH}, + + /* rw branch */ + {AuBrWAttr_MOO, AUFS_BRWATTR_MOO}, + {AuBrWAttr_NoLinkWH, AUFS_BRWATTR_NLWH}, + + {0, NULL} +}; + +static int br_attr_val(char *str, match_table_t table, substring_t args[]) +{ + int attr, v; + char *p; + + attr = 0; + do { + p = strchr(str, '+'); + if (p) + *p = 0; + v = match_token(str, table, args); + if (v) { + if (v & AuBrAttr_CMOO_Mask) + attr &= ~AuBrAttr_CMOO_Mask; + attr |= v; + } else { + if (p) + *p = '+'; + pr_warn("ignored branch attribute %s\n", str); + break; + } + if (p) + str = p + 1; + } while (p); + + return attr; +} + +static int au_do_optstr_br_attr(au_br_perm_str_t *str, int perm) +{ + int sz; + const char *p; + char *q; + + q = str->a; + *q = 0; + p = au_optstr(&perm, brattr); + if (p) { + sz = strlen(p); + memcpy(q, p, sz + 1); + q += sz; + } else + goto out; + + do { + p = au_optstr(&perm, brattr); + if (p) { + *q++ = '+'; + sz = strlen(p); + memcpy(q, p, sz + 1); + q += sz; + } + } while (p); + +out: + return q - str->a; +} + +static int noinline_for_stack br_perm_val(char *perm) +{ + int val, bad, sz; + char *p; + substring_t args[MAX_OPT_ARGS]; + au_br_perm_str_t attr; + + p = strchr(perm, '+'); + if (p) + *p = 0; + val = match_token(perm, brperm, args); + if (!val) { + if (p) + *p = '+'; + pr_warn("ignored branch permission %s\n", perm); + val = AuBrPerm_RO; + goto out; + } + if (!p) + goto out; + + val |= br_attr_val(p + 1, brattr, args); + + bad = 0; + switch (val & AuBrPerm_Mask) { + case AuBrPerm_RO: + case AuBrPerm_RR: + bad = val & AuBrWAttr_Mask; + val &= ~AuBrWAttr_Mask; + break; + case AuBrPerm_RW: + bad = val & AuBrRAttr_Mask; + val &= ~AuBrRAttr_Mask; + break; + } + + /* + * 'unpin' attrib becomes meaningless since linux-3.18-rc1, but aufs + * does not treat it as an error, just warning. + * this is a tiny guard for the user operation. + */ + if (val & AuBrAttr_UNPIN) { + bad |= AuBrAttr_UNPIN; + val &= ~AuBrAttr_UNPIN; + } + + if (unlikely(bad)) { + sz = au_do_optstr_br_attr(&attr, bad); + AuDebugOn(!sz); + pr_warn("ignored branch attribute %s\n", attr.a); + } + +out: + return val; +} + +void au_optstr_br_perm(au_br_perm_str_t *str, int perm) +{ + au_br_perm_str_t attr; + const char *p; + char *q; + int sz; + + q = str->a; + p = au_optstr(&perm, brperm); + AuDebugOn(!p || !*p); + sz = strlen(p); + memcpy(q, p, sz + 1); + q += sz; + + sz = au_do_optstr_br_attr(&attr, perm); + if (sz) { + *q++ = '+'; + memcpy(q, attr.a, sz + 1); + } + + AuDebugOn(strlen(str->a) >= sizeof(str->a)); +} + +/* ---------------------------------------------------------------------- */ + +static match_table_t udbalevel = { + {AuOpt_UDBA_REVAL, "reval"}, + {AuOpt_UDBA_NONE, "none"}, +#ifdef CONFIG_AUFS_HNOTIFY + {AuOpt_UDBA_HNOTIFY, "notify"}, /* abstraction */ +#ifdef CONFIG_AUFS_HFSNOTIFY + {AuOpt_UDBA_HNOTIFY, "fsnotify"}, +#endif +#endif + {-1, NULL} +}; + +static int noinline_for_stack udba_val(char *str) +{ + substring_t args[MAX_OPT_ARGS]; + + return match_token(str, udbalevel, args); +} + +const char *au_optstr_udba(int udba) +{ + return au_parser_pattern(udba, udbalevel); +} + +/* ---------------------------------------------------------------------- */ + +static match_table_t au_wbr_create_policy = { + {AuWbrCreate_TDP, "tdp"}, + {AuWbrCreate_TDP, "top-down-parent"}, + {AuWbrCreate_RR, "rr"}, + {AuWbrCreate_RR, "round-robin"}, + {AuWbrCreate_MFS, "mfs"}, + {AuWbrCreate_MFS, "most-free-space"}, + {AuWbrCreate_MFSV, "mfs:%d"}, + {AuWbrCreate_MFSV, "most-free-space:%d"}, + + /* top-down regardless the parent, and then mfs */ + {AuWbrCreate_TDMFS, "tdmfs:%d"}, + {AuWbrCreate_TDMFSV, "tdmfs:%d:%d"}, + + {AuWbrCreate_MFSRR, "mfsrr:%d"}, + {AuWbrCreate_MFSRRV, "mfsrr:%d:%d"}, + {AuWbrCreate_PMFS, "pmfs"}, + {AuWbrCreate_PMFSV, "pmfs:%d"}, + {AuWbrCreate_PMFSRR, "pmfsrr:%d"}, + {AuWbrCreate_PMFSRRV, "pmfsrr:%d:%d"}, + + {-1, NULL} +}; + +static int au_wbr_mfs_wmark(substring_t *arg, char *str, + struct au_opt_wbr_create *create) +{ + int err; + unsigned long long ull; + + err = 0; + if (!match_u64(arg, &ull)) + create->mfsrr_watermark = ull; + else { + pr_err("bad integer in %s\n", str); + err = -EINVAL; + } + + return err; +} + +static int au_wbr_mfs_sec(substring_t *arg, char *str, + struct au_opt_wbr_create *create) +{ + int n, err; + + err = 0; + if (!match_int(arg, &n) && 0 <= n && n <= AUFS_MFS_MAX_SEC) + create->mfs_second = n; + else { + pr_err("bad integer in %s\n", str); + err = -EINVAL; + } + + return err; +} + +static int noinline_for_stack +au_wbr_create_val(char *str, struct au_opt_wbr_create *create) +{ + int err, e; + substring_t args[MAX_OPT_ARGS]; + + err = match_token(str, au_wbr_create_policy, args); + create->wbr_create = err; + switch (err) { + case AuWbrCreate_MFSRRV: + case AuWbrCreate_TDMFSV: + case AuWbrCreate_PMFSRRV: + e = au_wbr_mfs_wmark(&args[0], str, create); + if (!e) + e = au_wbr_mfs_sec(&args[1], str, create); + if (unlikely(e)) + err = e; + break; + case AuWbrCreate_MFSRR: + case AuWbrCreate_TDMFS: + case AuWbrCreate_PMFSRR: + e = au_wbr_mfs_wmark(&args[0], str, create); + if (unlikely(e)) { + err = e; + break; + } + /*FALLTHROUGH*/ + case AuWbrCreate_MFS: + case AuWbrCreate_PMFS: + create->mfs_second = AUFS_MFS_DEF_SEC; + break; + case AuWbrCreate_MFSV: + case AuWbrCreate_PMFSV: + e = au_wbr_mfs_sec(&args[0], str, create); + if (unlikely(e)) + err = e; + break; + } + + return err; +} + +const char *au_optstr_wbr_create(int wbr_create) +{ + return au_parser_pattern(wbr_create, au_wbr_create_policy); +} + +static match_table_t au_wbr_copyup_policy = { + {AuWbrCopyup_TDP, "tdp"}, + {AuWbrCopyup_TDP, "top-down-parent"}, + {AuWbrCopyup_BUP, "bup"}, + {AuWbrCopyup_BUP, "bottom-up-parent"}, + {AuWbrCopyup_BU, "bu"}, + {AuWbrCopyup_BU, "bottom-up"}, + {-1, NULL} +}; + +static int noinline_for_stack au_wbr_copyup_val(char *str) +{ + substring_t args[MAX_OPT_ARGS]; + + return match_token(str, au_wbr_copyup_policy, args); +} + +const char *au_optstr_wbr_copyup(int wbr_copyup) +{ + return au_parser_pattern(wbr_copyup, au_wbr_copyup_policy); +} + +/* ---------------------------------------------------------------------- */ + +static const int lkup_dirflags = LOOKUP_FOLLOW | LOOKUP_DIRECTORY; + +static void dump_opts(struct au_opts *opts) +{ +#ifdef CONFIG_AUFS_DEBUG + /* reduce stack space */ + union { + struct au_opt_add *add; + struct au_opt_del *del; + struct au_opt_mod *mod; + struct au_opt_xino *xino; + struct au_opt_xino_itrunc *xino_itrunc; + struct au_opt_wbr_create *create; + } u; + struct au_opt *opt; + + opt = opts->opt; + while (opt->type != Opt_tail) { + switch (opt->type) { + case Opt_add: + u.add = &opt->add; + AuDbg("add {b%d, %s, 0x%x, %p}\n", + u.add->bindex, u.add->pathname, u.add->perm, + u.add->path.dentry); + break; + case Opt_del: + case Opt_idel: + u.del = &opt->del; + AuDbg("del {%s, %p}\n", + u.del->pathname, u.del->h_path.dentry); + break; + case Opt_mod: + case Opt_imod: + u.mod = &opt->mod; + AuDbg("mod {%s, 0x%x, %p}\n", + u.mod->path, u.mod->perm, u.mod->h_root); + break; + case Opt_append: + u.add = &opt->add; + AuDbg("append {b%d, %s, 0x%x, %p}\n", + u.add->bindex, u.add->pathname, u.add->perm, + u.add->path.dentry); + break; + case Opt_prepend: + u.add = &opt->add; + AuDbg("prepend {b%d, %s, 0x%x, %p}\n", + u.add->bindex, u.add->pathname, u.add->perm, + u.add->path.dentry); + break; + case Opt_dirwh: + AuDbg("dirwh %d\n", opt->dirwh); + break; + case Opt_rdcache: + AuDbg("rdcache %d\n", opt->rdcache); + break; + case Opt_rdblk: + AuDbg("rdblk %u\n", opt->rdblk); + break; + case Opt_rdblk_def: + AuDbg("rdblk_def\n"); + break; + case Opt_rdhash: + AuDbg("rdhash %u\n", opt->rdhash); + break; + case Opt_rdhash_def: + AuDbg("rdhash_def\n"); + break; + case Opt_xino: + u.xino = &opt->xino; + AuDbg("xino {%s %pD}\n", u.xino->path, u.xino->file); + break; + case Opt_trunc_xino: + AuLabel(trunc_xino); + break; + case Opt_notrunc_xino: + AuLabel(notrunc_xino); + break; + case Opt_trunc_xino_path: + case Opt_itrunc_xino: + u.xino_itrunc = &opt->xino_itrunc; + AuDbg("trunc_xino %d\n", u.xino_itrunc->bindex); + break; + case Opt_noxino: + AuLabel(noxino); + break; + case Opt_trunc_xib: + AuLabel(trunc_xib); + break; + case Opt_notrunc_xib: + AuLabel(notrunc_xib); + break; + case Opt_shwh: + AuLabel(shwh); + break; + case Opt_noshwh: + AuLabel(noshwh); + break; + case Opt_dirperm1: + AuLabel(dirperm1); + break; + case Opt_nodirperm1: + AuLabel(nodirperm1); + break; + case Opt_plink: + AuLabel(plink); + break; + case Opt_noplink: + AuLabel(noplink); + break; + case Opt_list_plink: + AuLabel(list_plink); + break; + case Opt_udba: + AuDbg("udba %d, %s\n", + opt->udba, au_optstr_udba(opt->udba)); + break; + case Opt_dio: + AuLabel(dio); + break; + case Opt_nodio: + AuLabel(nodio); + break; + case Opt_diropq_a: + AuLabel(diropq_a); + break; + case Opt_diropq_w: + AuLabel(diropq_w); + break; + case Opt_warn_perm: + AuLabel(warn_perm); + break; + case Opt_nowarn_perm: + AuLabel(nowarn_perm); + break; + case Opt_verbose: + AuLabel(verbose); + break; + case Opt_noverbose: + AuLabel(noverbose); + break; + case Opt_sum: + AuLabel(sum); + break; + case Opt_nosum: + AuLabel(nosum); + break; + case Opt_wsum: + AuLabel(wsum); + break; + case Opt_wbr_create: + u.create = &opt->wbr_create; + AuDbg("create %d, %s\n", u.create->wbr_create, + au_optstr_wbr_create(u.create->wbr_create)); + switch (u.create->wbr_create) { + case AuWbrCreate_MFSV: + case AuWbrCreate_PMFSV: + AuDbg("%d sec\n", u.create->mfs_second); + break; + case AuWbrCreate_MFSRR: + case AuWbrCreate_TDMFS: + AuDbg("%llu watermark\n", + u.create->mfsrr_watermark); + break; + case AuWbrCreate_MFSRRV: + case AuWbrCreate_TDMFSV: + case AuWbrCreate_PMFSRRV: + AuDbg("%llu watermark, %d sec\n", + u.create->mfsrr_watermark, + u.create->mfs_second); + break; + } + break; + case Opt_wbr_copyup: + AuDbg("copyup %d, %s\n", opt->wbr_copyup, + au_optstr_wbr_copyup(opt->wbr_copyup)); + break; + case Opt_fhsm_sec: + AuDbg("fhsm_sec %u\n", opt->fhsm_second); + break; + case Opt_dirren: + AuLabel(dirren); + break; + case Opt_nodirren: + AuLabel(nodirren); + break; + case Opt_acl: + AuLabel(acl); + break; + case Opt_noacl: + AuLabel(noacl); + break; + default: + BUG(); + } + opt++; + } +#endif +} + +void au_opts_free(struct au_opts *opts) +{ + struct au_opt *opt; + + opt = opts->opt; + while (opt->type != Opt_tail) { + switch (opt->type) { + case Opt_add: + case Opt_append: + case Opt_prepend: + path_put(&opt->add.path); + break; + case Opt_del: + case Opt_idel: + path_put(&opt->del.h_path); + break; + case Opt_mod: + case Opt_imod: + dput(opt->mod.h_root); + break; + case Opt_xino: + fput(opt->xino.file); + break; + } + opt++; + } +} + +static int opt_add(struct au_opt *opt, char *opt_str, unsigned long sb_flags, + aufs_bindex_t bindex) +{ + int err; + struct au_opt_add *add = &opt->add; + char *p; + + add->bindex = bindex; + add->perm = AuBrPerm_RO; + add->pathname = opt_str; + p = strchr(opt_str, '='); + if (p) { + *p++ = 0; + if (*p) + add->perm = br_perm_val(p); + } + + err = vfsub_kern_path(add->pathname, lkup_dirflags, &add->path); + if (!err) { + if (!p) { + add->perm = AuBrPerm_RO; + if (au_test_fs_rr(add->path.dentry->d_sb)) + add->perm = AuBrPerm_RR; + else if (!bindex && !(sb_flags & SB_RDONLY)) + add->perm = AuBrPerm_RW; + } + opt->type = Opt_add; + goto out; + } + pr_err("lookup failed %s (%d)\n", add->pathname, err); + err = -EINVAL; + +out: + return err; +} + +static int au_opts_parse_del(struct au_opt_del *del, substring_t args[]) +{ + int err; + + del->pathname = args[0].from; + AuDbg("del path %s\n", del->pathname); + + err = vfsub_kern_path(del->pathname, lkup_dirflags, &del->h_path); + if (unlikely(err)) + pr_err("lookup failed %s (%d)\n", del->pathname, err); + + return err; +} + +#if 0 /* reserved for future use */ +static int au_opts_parse_idel(struct super_block *sb, aufs_bindex_t bindex, + struct au_opt_del *del, substring_t args[]) +{ + int err; + struct dentry *root; + + err = -EINVAL; + root = sb->s_root; + aufs_read_lock(root, AuLock_FLUSH); + if (bindex < 0 || au_sbbot(sb) < bindex) { + pr_err("out of bounds, %d\n", bindex); + goto out; + } + + err = 0; + del->h_path.dentry = dget(au_h_dptr(root, bindex)); + del->h_path.mnt = mntget(au_sbr_mnt(sb, bindex)); + +out: + aufs_read_unlock(root, !AuLock_IR); + return err; +} +#endif + +static int noinline_for_stack +au_opts_parse_mod(struct au_opt_mod *mod, substring_t args[]) +{ + int err; + struct path path; + char *p; + + err = -EINVAL; + mod->path = args[0].from; + p = strchr(mod->path, '='); + if (unlikely(!p)) { + pr_err("no permssion %s\n", args[0].from); + goto out; + } + + *p++ = 0; + err = vfsub_kern_path(mod->path, lkup_dirflags, &path); + if (unlikely(err)) { + pr_err("lookup failed %s (%d)\n", mod->path, err); + goto out; + } + + mod->perm = br_perm_val(p); + AuDbg("mod path %s, perm 0x%x, %s\n", mod->path, mod->perm, p); + mod->h_root = dget(path.dentry); + path_put(&path); + +out: + return err; +} + +#if 0 /* reserved for future use */ +static int au_opts_parse_imod(struct super_block *sb, aufs_bindex_t bindex, + struct au_opt_mod *mod, substring_t args[]) +{ + int err; + struct dentry *root; + + err = -EINVAL; + root = sb->s_root; + aufs_read_lock(root, AuLock_FLUSH); + if (bindex < 0 || au_sbbot(sb) < bindex) { + pr_err("out of bounds, %d\n", bindex); + goto out; + } + + err = 0; + mod->perm = br_perm_val(args[1].from); + AuDbg("mod path %s, perm 0x%x, %s\n", + mod->path, mod->perm, args[1].from); + mod->h_root = dget(au_h_dptr(root, bindex)); + +out: + aufs_read_unlock(root, !AuLock_IR); + return err; +} +#endif + +static int au_opts_parse_xino(struct super_block *sb, struct au_opt_xino *xino, + substring_t args[]) +{ + int err; + struct file *file; + + file = au_xino_create(sb, args[0].from, /*silent*/0); + err = PTR_ERR(file); + if (IS_ERR(file)) + goto out; + + err = -EINVAL; + if (unlikely(file->f_path.dentry->d_sb == sb)) { + fput(file); + pr_err("%s must be outside\n", args[0].from); + goto out; + } + + err = 0; + xino->file = file; + xino->path = args[0].from; + +out: + return err; +} + +static int noinline_for_stack +au_opts_parse_xino_itrunc_path(struct super_block *sb, + struct au_opt_xino_itrunc *xino_itrunc, + substring_t args[]) +{ + int err; + aufs_bindex_t bbot, bindex; + struct path path; + struct dentry *root; + + err = vfsub_kern_path(args[0].from, lkup_dirflags, &path); + if (unlikely(err)) { + pr_err("lookup failed %s (%d)\n", args[0].from, err); + goto out; + } + + xino_itrunc->bindex = -1; + root = sb->s_root; + aufs_read_lock(root, AuLock_FLUSH); + bbot = au_sbbot(sb); + for (bindex = 0; bindex <= bbot; bindex++) { + if (au_h_dptr(root, bindex) == path.dentry) { + xino_itrunc->bindex = bindex; + break; + } + } + aufs_read_unlock(root, !AuLock_IR); + path_put(&path); + + if (unlikely(xino_itrunc->bindex < 0)) { + pr_err("no such branch %s\n", args[0].from); + err = -EINVAL; + } + +out: + return err; +} + +/* called without aufs lock */ +int au_opts_parse(struct super_block *sb, char *str, struct au_opts *opts) +{ + int err, n, token; + aufs_bindex_t bindex; + unsigned char skipped; + struct dentry *root; + struct au_opt *opt, *opt_tail; + char *opt_str; + /* reduce the stack space */ + union { + struct au_opt_xino_itrunc *xino_itrunc; + struct au_opt_wbr_create *create; + } u; + struct { + substring_t args[MAX_OPT_ARGS]; + } *a; + + err = -ENOMEM; + a = kmalloc(sizeof(*a), GFP_NOFS); + if (unlikely(!a)) + goto out; + + root = sb->s_root; + err = 0; + bindex = 0; + opt = opts->opt; + opt_tail = opt + opts->max_opt - 1; + opt->type = Opt_tail; + while (!err && (opt_str = strsep(&str, ",")) && *opt_str) { + err = -EINVAL; + skipped = 0; + token = match_token(opt_str, options, a->args); + switch (token) { + case Opt_br: + err = 0; + while (!err && (opt_str = strsep(&a->args[0].from, ":")) + && *opt_str) { + err = opt_add(opt, opt_str, opts->sb_flags, + bindex++); + if (unlikely(!err && ++opt > opt_tail)) { + err = -E2BIG; + break; + } + opt->type = Opt_tail; + skipped = 1; + } + break; + case Opt_add: + if (unlikely(match_int(&a->args[0], &n))) { + pr_err("bad integer in %s\n", opt_str); + break; + } + bindex = n; + err = opt_add(opt, a->args[1].from, opts->sb_flags, + bindex); + if (!err) + opt->type = token; + break; + case Opt_append: + err = opt_add(opt, a->args[0].from, opts->sb_flags, + /*dummy bindex*/1); + if (!err) + opt->type = token; + break; + case Opt_prepend: + err = opt_add(opt, a->args[0].from, opts->sb_flags, + /*bindex*/0); + if (!err) + opt->type = token; + break; + case Opt_del: + err = au_opts_parse_del(&opt->del, a->args); + if (!err) + opt->type = token; + break; +#if 0 /* reserved for future use */ + case Opt_idel: + del->pathname = "(indexed)"; + if (unlikely(match_int(&args[0], &n))) { + pr_err("bad integer in %s\n", opt_str); + break; + } + err = au_opts_parse_idel(sb, n, &opt->del, a->args); + if (!err) + opt->type = token; + break; +#endif + case Opt_mod: + err = au_opts_parse_mod(&opt->mod, a->args); + if (!err) + opt->type = token; + break; +#ifdef IMOD /* reserved for future use */ + case Opt_imod: + u.mod->path = "(indexed)"; + if (unlikely(match_int(&a->args[0], &n))) { + pr_err("bad integer in %s\n", opt_str); + break; + } + err = au_opts_parse_imod(sb, n, &opt->mod, a->args); + if (!err) + opt->type = token; + break; +#endif + case Opt_xino: + err = au_opts_parse_xino(sb, &opt->xino, a->args); + if (!err) + opt->type = token; + break; + + case Opt_trunc_xino_path: + err = au_opts_parse_xino_itrunc_path + (sb, &opt->xino_itrunc, a->args); + if (!err) + opt->type = token; + break; + + case Opt_itrunc_xino: + u.xino_itrunc = &opt->xino_itrunc; + if (unlikely(match_int(&a->args[0], &n))) { + pr_err("bad integer in %s\n", opt_str); + break; + } + u.xino_itrunc->bindex = n; + aufs_read_lock(root, AuLock_FLUSH); + if (n < 0 || au_sbbot(sb) < n) { + pr_err("out of bounds, %d\n", n); + aufs_read_unlock(root, !AuLock_IR); + break; + } + aufs_read_unlock(root, !AuLock_IR); + err = 0; + opt->type = token; + break; + + case Opt_dirwh: + if (unlikely(match_int(&a->args[0], &opt->dirwh))) + break; + err = 0; + opt->type = token; + break; + + case Opt_rdcache: + if (unlikely(match_int(&a->args[0], &n))) { + pr_err("bad integer in %s\n", opt_str); + break; + } + if (unlikely(n > AUFS_RDCACHE_MAX)) { + pr_err("rdcache must be smaller than %d\n", + AUFS_RDCACHE_MAX); + break; + } + opt->rdcache = n; + err = 0; + opt->type = token; + break; + case Opt_rdblk: + if (unlikely(match_int(&a->args[0], &n) + || n < 0 + || n > KMALLOC_MAX_SIZE)) { + pr_err("bad integer in %s\n", opt_str); + break; + } + if (unlikely(n && n < NAME_MAX)) { + pr_err("rdblk must be larger than %d\n", + NAME_MAX); + break; + } + opt->rdblk = n; + err = 0; + opt->type = token; + break; + case Opt_rdhash: + if (unlikely(match_int(&a->args[0], &n) + || n < 0 + || n * sizeof(struct hlist_head) + > KMALLOC_MAX_SIZE)) { + pr_err("bad integer in %s\n", opt_str); + break; + } + opt->rdhash = n; + err = 0; + opt->type = token; + break; + + case Opt_trunc_xino: + case Opt_notrunc_xino: + case Opt_noxino: + case Opt_trunc_xib: + case Opt_notrunc_xib: + case Opt_shwh: + case Opt_noshwh: + case Opt_dirperm1: + case Opt_nodirperm1: + case Opt_plink: + case Opt_noplink: + case Opt_list_plink: + case Opt_dio: + case Opt_nodio: + case Opt_diropq_a: + case Opt_diropq_w: + case Opt_warn_perm: + case Opt_nowarn_perm: + case Opt_verbose: + case Opt_noverbose: + case Opt_sum: + case Opt_nosum: + case Opt_wsum: + case Opt_rdblk_def: + case Opt_rdhash_def: + case Opt_dirren: + case Opt_nodirren: + case Opt_acl: + case Opt_noacl: + err = 0; + opt->type = token; + break; + + case Opt_udba: + opt->udba = udba_val(a->args[0].from); + if (opt->udba >= 0) { + err = 0; + opt->type = token; + } else + pr_err("wrong value, %s\n", opt_str); + break; + + case Opt_wbr_create: + u.create = &opt->wbr_create; + u.create->wbr_create + = au_wbr_create_val(a->args[0].from, u.create); + if (u.create->wbr_create >= 0) { + err = 0; + opt->type = token; + } else + pr_err("wrong value, %s\n", opt_str); + break; + case Opt_wbr_copyup: + opt->wbr_copyup = au_wbr_copyup_val(a->args[0].from); + if (opt->wbr_copyup >= 0) { + err = 0; + opt->type = token; + } else + pr_err("wrong value, %s\n", opt_str); + break; + + case Opt_fhsm_sec: + if (unlikely(match_int(&a->args[0], &n) + || n < 0)) { + pr_err("bad integer in %s\n", opt_str); + break; + } + if (sysaufs_brs) { + opt->fhsm_second = n; + opt->type = token; + } else + pr_warn("ignored %s\n", opt_str); + err = 0; + break; + + case Opt_ignore: + pr_warn("ignored %s\n", opt_str); + /*FALLTHROUGH*/ + case Opt_ignore_silent: + skipped = 1; + err = 0; + break; + case Opt_err: + pr_err("unknown option %s\n", opt_str); + break; + } + + if (!err && !skipped) { + if (unlikely(++opt > opt_tail)) { + err = -E2BIG; + opt--; + opt->type = Opt_tail; + break; + } + opt->type = Opt_tail; + } + } + + kfree(a); + dump_opts(opts); + if (unlikely(err)) + au_opts_free(opts); + +out: + return err; +} + +static int au_opt_wbr_create(struct super_block *sb, + struct au_opt_wbr_create *create) +{ + int err; + struct au_sbinfo *sbinfo; + + SiMustWriteLock(sb); + + err = 1; /* handled */ + sbinfo = au_sbi(sb); + if (sbinfo->si_wbr_create_ops->fin) { + err = sbinfo->si_wbr_create_ops->fin(sb); + if (!err) + err = 1; + } + + sbinfo->si_wbr_create = create->wbr_create; + sbinfo->si_wbr_create_ops = au_wbr_create_ops + create->wbr_create; + switch (create->wbr_create) { + case AuWbrCreate_MFSRRV: + case AuWbrCreate_MFSRR: + case AuWbrCreate_TDMFS: + case AuWbrCreate_TDMFSV: + case AuWbrCreate_PMFSRR: + case AuWbrCreate_PMFSRRV: + sbinfo->si_wbr_mfs.mfsrr_watermark = create->mfsrr_watermark; + /*FALLTHROUGH*/ + case AuWbrCreate_MFS: + case AuWbrCreate_MFSV: + case AuWbrCreate_PMFS: + case AuWbrCreate_PMFSV: + sbinfo->si_wbr_mfs.mfs_expire + = msecs_to_jiffies(create->mfs_second * MSEC_PER_SEC); + break; + } + + if (sbinfo->si_wbr_create_ops->init) + sbinfo->si_wbr_create_ops->init(sb); /* ignore */ + + return err; +} + +/* + * returns, + * plus: processed without an error + * zero: unprocessed + */ +static int au_opt_simple(struct super_block *sb, struct au_opt *opt, + struct au_opts *opts) +{ + int err; + struct au_sbinfo *sbinfo; + + SiMustWriteLock(sb); + + err = 1; /* handled */ + sbinfo = au_sbi(sb); + switch (opt->type) { + case Opt_udba: + sbinfo->si_mntflags &= ~AuOptMask_UDBA; + sbinfo->si_mntflags |= opt->udba; + opts->given_udba |= opt->udba; + break; + + case Opt_plink: + au_opt_set(sbinfo->si_mntflags, PLINK); + break; + case Opt_noplink: + if (au_opt_test(sbinfo->si_mntflags, PLINK)) + au_plink_put(sb, /*verbose*/1); + au_opt_clr(sbinfo->si_mntflags, PLINK); + break; + case Opt_list_plink: + if (au_opt_test(sbinfo->si_mntflags, PLINK)) + au_plink_list(sb); + break; + + case Opt_dio: + au_opt_set(sbinfo->si_mntflags, DIO); + au_fset_opts(opts->flags, REFRESH_DYAOP); + break; + case Opt_nodio: + au_opt_clr(sbinfo->si_mntflags, DIO); + au_fset_opts(opts->flags, REFRESH_DYAOP); + break; + + case Opt_fhsm_sec: + au_fhsm_set(sbinfo, opt->fhsm_second); + break; + + case Opt_diropq_a: + au_opt_set(sbinfo->si_mntflags, ALWAYS_DIROPQ); + break; + case Opt_diropq_w: + au_opt_clr(sbinfo->si_mntflags, ALWAYS_DIROPQ); + break; + + case Opt_warn_perm: + au_opt_set(sbinfo->si_mntflags, WARN_PERM); + break; + case Opt_nowarn_perm: + au_opt_clr(sbinfo->si_mntflags, WARN_PERM); + break; + + case Opt_verbose: + au_opt_set(sbinfo->si_mntflags, VERBOSE); + break; + case Opt_noverbose: + au_opt_clr(sbinfo->si_mntflags, VERBOSE); + break; + + case Opt_sum: + au_opt_set(sbinfo->si_mntflags, SUM); + break; + case Opt_wsum: + au_opt_clr(sbinfo->si_mntflags, SUM); + au_opt_set(sbinfo->si_mntflags, SUM_W); + case Opt_nosum: + au_opt_clr(sbinfo->si_mntflags, SUM); + au_opt_clr(sbinfo->si_mntflags, SUM_W); + break; + + case Opt_wbr_create: + err = au_opt_wbr_create(sb, &opt->wbr_create); + break; + case Opt_wbr_copyup: + sbinfo->si_wbr_copyup = opt->wbr_copyup; + sbinfo->si_wbr_copyup_ops = au_wbr_copyup_ops + opt->wbr_copyup; + break; + + case Opt_dirwh: + sbinfo->si_dirwh = opt->dirwh; + break; + + case Opt_rdcache: + sbinfo->si_rdcache + = msecs_to_jiffies(opt->rdcache * MSEC_PER_SEC); + break; + case Opt_rdblk: + sbinfo->si_rdblk = opt->rdblk; + break; + case Opt_rdblk_def: + sbinfo->si_rdblk = AUFS_RDBLK_DEF; + break; + case Opt_rdhash: + sbinfo->si_rdhash = opt->rdhash; + break; + case Opt_rdhash_def: + sbinfo->si_rdhash = AUFS_RDHASH_DEF; + break; + + case Opt_shwh: + au_opt_set(sbinfo->si_mntflags, SHWH); + break; + case Opt_noshwh: + au_opt_clr(sbinfo->si_mntflags, SHWH); + break; + + case Opt_dirperm1: + au_opt_set(sbinfo->si_mntflags, DIRPERM1); + break; + case Opt_nodirperm1: + au_opt_clr(sbinfo->si_mntflags, DIRPERM1); + break; + + case Opt_trunc_xino: + au_opt_set(sbinfo->si_mntflags, TRUNC_XINO); + break; + case Opt_notrunc_xino: + au_opt_clr(sbinfo->si_mntflags, TRUNC_XINO); + break; + + case Opt_trunc_xino_path: + case Opt_itrunc_xino: + err = au_xino_trunc(sb, opt->xino_itrunc.bindex); + if (!err) + err = 1; + break; + + case Opt_trunc_xib: + au_fset_opts(opts->flags, TRUNC_XIB); + break; + case Opt_notrunc_xib: + au_fclr_opts(opts->flags, TRUNC_XIB); + break; + + case Opt_dirren: + err = 1; + if (!au_opt_test(sbinfo->si_mntflags, DIRREN)) { + err = au_dr_opt_set(sb); + if (!err) + err = 1; + } + if (err == 1) + au_opt_set(sbinfo->si_mntflags, DIRREN); + break; + case Opt_nodirren: + err = 1; + if (au_opt_test(sbinfo->si_mntflags, DIRREN)) { + err = au_dr_opt_clr(sb, au_ftest_opts(opts->flags, + DR_FLUSHED)); + if (!err) + err = 1; + } + if (err == 1) + au_opt_clr(sbinfo->si_mntflags, DIRREN); + break; + + case Opt_acl: + sb->s_flags |= SB_POSIXACL; + break; + case Opt_noacl: + sb->s_flags &= ~SB_POSIXACL; + break; + + default: + err = 0; + break; + } + + return err; +} + +/* + * returns tri-state. + * plus: processed without an error + * zero: unprocessed + * minus: error + */ +static int au_opt_br(struct super_block *sb, struct au_opt *opt, + struct au_opts *opts) +{ + int err, do_refresh; + + err = 0; + switch (opt->type) { + case Opt_append: + opt->add.bindex = au_sbbot(sb) + 1; + if (opt->add.bindex < 0) + opt->add.bindex = 0; + goto add; + case Opt_prepend: + opt->add.bindex = 0; + add: /* indented label */ + case Opt_add: + err = au_br_add(sb, &opt->add, + au_ftest_opts(opts->flags, REMOUNT)); + if (!err) { + err = 1; + au_fset_opts(opts->flags, REFRESH); + } + break; + + case Opt_del: + case Opt_idel: + err = au_br_del(sb, &opt->del, + au_ftest_opts(opts->flags, REMOUNT)); + if (!err) { + err = 1; + au_fset_opts(opts->flags, TRUNC_XIB); + au_fset_opts(opts->flags, REFRESH); + } + break; + + case Opt_mod: + case Opt_imod: + err = au_br_mod(sb, &opt->mod, + au_ftest_opts(opts->flags, REMOUNT), + &do_refresh); + if (!err) { + err = 1; + if (do_refresh) + au_fset_opts(opts->flags, REFRESH); + } + break; + } + return err; +} + +static int au_opt_xino(struct super_block *sb, struct au_opt *opt, + struct au_opt_xino **opt_xino, + struct au_opts *opts) +{ + int err; + aufs_bindex_t bbot, bindex; + struct dentry *root, *parent, *h_root; + + err = 0; + switch (opt->type) { + case Opt_xino: + au_xino_brid_set(sb, -1); + /* safe d_parent access */ + parent = opt->xino.file->f_path.dentry->d_parent; + root = sb->s_root; + bbot = au_sbbot(sb); + for (bindex = 0; bindex <= bbot; bindex++) { + h_root = au_h_dptr(root, bindex); + if (h_root == parent) { + au_xino_brid_set(sb, au_sbr_id(sb, bindex)); + break; + } + } + + err = au_xino_set(sb, &opt->xino, + !!au_ftest_opts(opts->flags, REMOUNT)); + if (unlikely(err)) + break; + + *opt_xino = &opt->xino; + break; + + case Opt_noxino: + au_xino_clr(sb); + *opt_xino = (void *)-1; + break; + } + + return err; +} + +int au_opts_verify(struct super_block *sb, unsigned long sb_flags, + unsigned int pending) +{ + int err, fhsm; + aufs_bindex_t bindex, bbot; + unsigned char do_plink, skip, do_free, can_no_dreval; + struct au_branch *br; + struct au_wbr *wbr; + struct dentry *root, *dentry; + struct inode *dir, *h_dir; + struct au_sbinfo *sbinfo; + struct au_hinode *hdir; + + SiMustAnyLock(sb); + + sbinfo = au_sbi(sb); + AuDebugOn(!(sbinfo->si_mntflags & AuOptMask_UDBA)); + + if (!(sb_flags & SB_RDONLY)) { + if (unlikely(!au_br_writable(au_sbr_perm(sb, 0)))) + pr_warn("first branch should be rw\n"); + if (unlikely(au_opt_test(sbinfo->si_mntflags, SHWH))) + pr_warn_once("shwh should be used with ro\n"); + } + + if (au_opt_test((sbinfo->si_mntflags | pending), UDBA_HNOTIFY) + && !au_opt_test(sbinfo->si_mntflags, XINO)) + pr_warn_once("udba=*notify requires xino\n"); + + if (au_opt_test(sbinfo->si_mntflags, DIRPERM1)) + pr_warn_once("dirperm1 breaks the protection" + " by the permission bits on the lower branch\n"); + + err = 0; + fhsm = 0; + root = sb->s_root; + dir = d_inode(root); + do_plink = !!au_opt_test(sbinfo->si_mntflags, PLINK); + can_no_dreval = !!au_opt_test((sbinfo->si_mntflags | pending), + UDBA_NONE); + bbot = au_sbbot(sb); + for (bindex = 0; !err && bindex <= bbot; bindex++) { + skip = 0; + h_dir = au_h_iptr(dir, bindex); + br = au_sbr(sb, bindex); + + if ((br->br_perm & AuBrAttr_ICEX) + && !h_dir->i_op->listxattr) + br->br_perm &= ~AuBrAttr_ICEX; +#if 0 + if ((br->br_perm & AuBrAttr_ICEX_SEC) + && (au_br_sb(br)->s_flags & SB_NOSEC)) + br->br_perm &= ~AuBrAttr_ICEX_SEC; +#endif + + do_free = 0; + wbr = br->br_wbr; + if (wbr) + wbr_wh_read_lock(wbr); + + if (!au_br_writable(br->br_perm)) { + do_free = !!wbr; + skip = (!wbr + || (!wbr->wbr_whbase + && !wbr->wbr_plink + && !wbr->wbr_orph)); + } else if (!au_br_wh_linkable(br->br_perm)) { + /* skip = (!br->br_whbase && !br->br_orph); */ + skip = (!wbr || !wbr->wbr_whbase); + if (skip && wbr) { + if (do_plink) + skip = !!wbr->wbr_plink; + else + skip = !wbr->wbr_plink; + } + } else { + /* skip = (br->br_whbase && br->br_ohph); */ + skip = (wbr && wbr->wbr_whbase); + if (skip) { + if (do_plink) + skip = !!wbr->wbr_plink; + else + skip = !wbr->wbr_plink; + } + } + if (wbr) + wbr_wh_read_unlock(wbr); + + if (can_no_dreval) { + dentry = br->br_path.dentry; + spin_lock(&dentry->d_lock); + if (dentry->d_flags & + (DCACHE_OP_REVALIDATE | DCACHE_OP_WEAK_REVALIDATE)) + can_no_dreval = 0; + spin_unlock(&dentry->d_lock); + } + + if (au_br_fhsm(br->br_perm)) { + fhsm++; + AuDebugOn(!br->br_fhsm); + } + + if (skip) + continue; + + hdir = au_hi(dir, bindex); + au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT); + if (wbr) + wbr_wh_write_lock(wbr); + err = au_wh_init(br, sb); + if (wbr) + wbr_wh_write_unlock(wbr); + au_hn_inode_unlock(hdir); + + if (!err && do_free) { + kfree(wbr); + br->br_wbr = NULL; + } + } + + if (can_no_dreval) + au_fset_si(sbinfo, NO_DREVAL); + else + au_fclr_si(sbinfo, NO_DREVAL); + + if (fhsm >= 2) { + au_fset_si(sbinfo, FHSM); + for (bindex = bbot; bindex >= 0; bindex--) { + br = au_sbr(sb, bindex); + if (au_br_fhsm(br->br_perm)) { + au_fhsm_set_bottom(sb, bindex); + break; + } + } + } else { + au_fclr_si(sbinfo, FHSM); + au_fhsm_set_bottom(sb, -1); + } + + return err; +} + +int au_opts_mount(struct super_block *sb, struct au_opts *opts) +{ + int err; + unsigned int tmp; + aufs_bindex_t bindex, bbot; + struct au_opt *opt; + struct au_opt_xino *opt_xino, xino; + struct au_sbinfo *sbinfo; + struct au_branch *br; + struct inode *dir; + + SiMustWriteLock(sb); + + err = 0; + opt_xino = NULL; + opt = opts->opt; + while (err >= 0 && opt->type != Opt_tail) + err = au_opt_simple(sb, opt++, opts); + if (err > 0) + err = 0; + else if (unlikely(err < 0)) + goto out; + + /* disable xino and udba temporary */ + sbinfo = au_sbi(sb); + tmp = sbinfo->si_mntflags; + au_opt_clr(sbinfo->si_mntflags, XINO); + au_opt_set_udba(sbinfo->si_mntflags, UDBA_REVAL); + + opt = opts->opt; + while (err >= 0 && opt->type != Opt_tail) + err = au_opt_br(sb, opt++, opts); + if (err > 0) + err = 0; + else if (unlikely(err < 0)) + goto out; + + bbot = au_sbbot(sb); + if (unlikely(bbot < 0)) { + err = -EINVAL; + pr_err("no branches\n"); + goto out; + } + + if (au_opt_test(tmp, XINO)) + au_opt_set(sbinfo->si_mntflags, XINO); + opt = opts->opt; + while (!err && opt->type != Opt_tail) + err = au_opt_xino(sb, opt++, &opt_xino, opts); + if (unlikely(err)) + goto out; + + err = au_opts_verify(sb, sb->s_flags, tmp); + if (unlikely(err)) + goto out; + + /* restore xino */ + if (au_opt_test(tmp, XINO) && !opt_xino) { + xino.file = au_xino_def(sb); + err = PTR_ERR(xino.file); + if (IS_ERR(xino.file)) + goto out; + + err = au_xino_set(sb, &xino, /*remount*/0); + fput(xino.file); + if (unlikely(err)) + goto out; + } + + /* restore udba */ + tmp &= AuOptMask_UDBA; + sbinfo->si_mntflags &= ~AuOptMask_UDBA; + sbinfo->si_mntflags |= tmp; + bbot = au_sbbot(sb); + for (bindex = 0; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + err = au_hnotify_reset_br(tmp, br, br->br_perm); + if (unlikely(err)) + AuIOErr("hnotify failed on br %d, %d, ignored\n", + bindex, err); + /* go on even if err */ + } + if (au_opt_test(tmp, UDBA_HNOTIFY)) { + dir = d_inode(sb->s_root); + au_hn_reset(dir, au_hi_flags(dir, /*isdir*/1) & ~AuHi_XINO); + } + +out: + return err; +} + +int au_opts_remount(struct super_block *sb, struct au_opts *opts) +{ + int err, rerr; + unsigned char no_dreval; + struct inode *dir; + struct au_opt_xino *opt_xino; + struct au_opt *opt; + struct au_sbinfo *sbinfo; + + SiMustWriteLock(sb); + + err = au_dr_opt_flush(sb); + if (unlikely(err)) + goto out; + au_fset_opts(opts->flags, DR_FLUSHED); + + dir = d_inode(sb->s_root); + sbinfo = au_sbi(sb); + opt_xino = NULL; + opt = opts->opt; + while (err >= 0 && opt->type != Opt_tail) { + err = au_opt_simple(sb, opt, opts); + if (!err) + err = au_opt_br(sb, opt, opts); + if (!err) + err = au_opt_xino(sb, opt, &opt_xino, opts); + opt++; + } + if (err > 0) + err = 0; + AuTraceErr(err); + /* go on even err */ + + no_dreval = !!au_ftest_si(sbinfo, NO_DREVAL); + rerr = au_opts_verify(sb, opts->sb_flags, /*pending*/0); + if (unlikely(rerr && !err)) + err = rerr; + + if (no_dreval != !!au_ftest_si(sbinfo, NO_DREVAL)) + au_fset_opts(opts->flags, REFRESH_IDOP); + + if (au_ftest_opts(opts->flags, TRUNC_XIB)) { + rerr = au_xib_trunc(sb); + if (unlikely(rerr && !err)) + err = rerr; + } + + /* will be handled by the caller */ + if (!au_ftest_opts(opts->flags, REFRESH) + && (opts->given_udba + || au_opt_test(sbinfo->si_mntflags, XINO) + || au_ftest_opts(opts->flags, REFRESH_IDOP) + )) + au_fset_opts(opts->flags, REFRESH); + + AuDbg("status 0x%x\n", opts->flags); + +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +unsigned int au_opt_udba(struct super_block *sb) +{ + return au_mntflags(sb) & AuOptMask_UDBA; +} diff --git a/fs/aufs/opts.h b/fs/aufs/opts.h new file mode 100644 index 00000000000..fd167bd0fea --- /dev/null +++ b/fs/aufs/opts.h @@ -0,0 +1,225 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * mount options/flags + */ + +#ifndef __AUFS_OPTS_H__ +#define __AUFS_OPTS_H__ + +#ifdef __KERNEL__ + +#include + +struct file; + +/* ---------------------------------------------------------------------- */ + +/* mount flags */ +#define AuOpt_XINO 1 /* external inode number bitmap + and translation table */ +#define AuOpt_TRUNC_XINO (1 << 1) /* truncate xino files */ +#define AuOpt_UDBA_NONE (1 << 2) /* users direct branch access */ +#define AuOpt_UDBA_REVAL (1 << 3) +#define AuOpt_UDBA_HNOTIFY (1 << 4) +#define AuOpt_SHWH (1 << 5) /* show whiteout */ +#define AuOpt_PLINK (1 << 6) /* pseudo-link */ +#define AuOpt_DIRPERM1 (1 << 7) /* ignore the lower dir's perm + bits */ +#define AuOpt_ALWAYS_DIROPQ (1 << 9) /* policy to creating diropq */ +#define AuOpt_SUM (1 << 10) /* summation for statfs(2) */ +#define AuOpt_SUM_W (1 << 11) /* unimplemented */ +#define AuOpt_WARN_PERM (1 << 12) /* warn when add-branch */ +#define AuOpt_VERBOSE (1 << 13) /* busy inode when del-branch */ +#define AuOpt_DIO (1 << 14) /* direct io */ +#define AuOpt_DIRREN (1 << 15) /* directory rename */ + +#ifndef CONFIG_AUFS_HNOTIFY +#undef AuOpt_UDBA_HNOTIFY +#define AuOpt_UDBA_HNOTIFY 0 +#endif +#ifndef CONFIG_AUFS_DIRREN +#undef AuOpt_DIRREN +#define AuOpt_DIRREN 0 +#endif +#ifndef CONFIG_AUFS_SHWH +#undef AuOpt_SHWH +#define AuOpt_SHWH 0 +#endif + +#define AuOpt_Def (AuOpt_XINO \ + | AuOpt_UDBA_REVAL \ + | AuOpt_PLINK \ + /* | AuOpt_DIRPERM1 */ \ + | AuOpt_WARN_PERM) +#define AuOptMask_UDBA (AuOpt_UDBA_NONE \ + | AuOpt_UDBA_REVAL \ + | AuOpt_UDBA_HNOTIFY) + +#define au_opt_test(flags, name) (flags & AuOpt_##name) +#define au_opt_set(flags, name) do { \ + BUILD_BUG_ON(AuOpt_##name & AuOptMask_UDBA); \ + ((flags) |= AuOpt_##name); \ +} while (0) +#define au_opt_set_udba(flags, name) do { \ + (flags) &= ~AuOptMask_UDBA; \ + ((flags) |= AuOpt_##name); \ +} while (0) +#define au_opt_clr(flags, name) do { \ + ((flags) &= ~AuOpt_##name); \ +} while (0) + +static inline unsigned int au_opts_plink(unsigned int mntflags) +{ +#ifdef CONFIG_PROC_FS + return mntflags; +#else + return mntflags & ~AuOpt_PLINK; +#endif +} + +/* ---------------------------------------------------------------------- */ + +/* policies to select one among multiple writable branches */ +enum { + AuWbrCreate_TDP, /* top down parent */ + AuWbrCreate_RR, /* round robin */ + AuWbrCreate_MFS, /* most free space */ + AuWbrCreate_MFSV, /* mfs with seconds */ + AuWbrCreate_MFSRR, /* mfs then rr */ + AuWbrCreate_MFSRRV, /* mfs then rr with seconds */ + AuWbrCreate_TDMFS, /* top down regardless parent and mfs */ + AuWbrCreate_TDMFSV, /* top down regardless parent and mfs */ + AuWbrCreate_PMFS, /* parent and mfs */ + AuWbrCreate_PMFSV, /* parent and mfs with seconds */ + AuWbrCreate_PMFSRR, /* parent, mfs and round-robin */ + AuWbrCreate_PMFSRRV, /* plus seconds */ + + AuWbrCreate_Def = AuWbrCreate_TDP +}; + +enum { + AuWbrCopyup_TDP, /* top down parent */ + AuWbrCopyup_BUP, /* bottom up parent */ + AuWbrCopyup_BU, /* bottom up */ + + AuWbrCopyup_Def = AuWbrCopyup_TDP +}; + +/* ---------------------------------------------------------------------- */ + +struct au_opt_add { + aufs_bindex_t bindex; + char *pathname; + int perm; + struct path path; +}; + +struct au_opt_del { + char *pathname; + struct path h_path; +}; + +struct au_opt_mod { + char *path; + int perm; + struct dentry *h_root; +}; + +struct au_opt_xino { + char *path; + struct file *file; +}; + +struct au_opt_xino_itrunc { + aufs_bindex_t bindex; +}; + +struct au_opt_wbr_create { + int wbr_create; + int mfs_second; + unsigned long long mfsrr_watermark; +}; + +struct au_opt { + int type; + union { + struct au_opt_xino xino; + struct au_opt_xino_itrunc xino_itrunc; + struct au_opt_add add; + struct au_opt_del del; + struct au_opt_mod mod; + int dirwh; + int rdcache; + unsigned int rdblk; + unsigned int rdhash; + int udba; + struct au_opt_wbr_create wbr_create; + int wbr_copyup; + unsigned int fhsm_second; + }; +}; + +/* opts flags */ +#define AuOpts_REMOUNT 1 +#define AuOpts_REFRESH (1 << 1) +#define AuOpts_TRUNC_XIB (1 << 2) +#define AuOpts_REFRESH_DYAOP (1 << 3) +#define AuOpts_REFRESH_IDOP (1 << 4) +#define AuOpts_DR_FLUSHED (1 << 5) +#define au_ftest_opts(flags, name) ((flags) & AuOpts_##name) +#define au_fset_opts(flags, name) \ + do { (flags) |= AuOpts_##name; } while (0) +#define au_fclr_opts(flags, name) \ + do { (flags) &= ~AuOpts_##name; } while (0) + +#ifndef CONFIG_AUFS_DIRREN +#undef AuOpts_DR_FLUSHED +#define AuOpts_DR_FLUSHED 0 +#endif + +struct au_opts { + struct au_opt *opt; + int max_opt; + + unsigned int given_udba; + unsigned int flags; + unsigned long sb_flags; +}; + +/* ---------------------------------------------------------------------- */ + +/* opts.c */ +void au_optstr_br_perm(au_br_perm_str_t *str, int perm); +const char *au_optstr_udba(int udba); +const char *au_optstr_wbr_copyup(int wbr_copyup); +const char *au_optstr_wbr_create(int wbr_create); + +void au_opts_free(struct au_opts *opts); +struct super_block; +int au_opts_parse(struct super_block *sb, char *str, struct au_opts *opts); +int au_opts_verify(struct super_block *sb, unsigned long sb_flags, + unsigned int pending); +int au_opts_mount(struct super_block *sb, struct au_opts *opts); +int au_opts_remount(struct super_block *sb, struct au_opts *opts); + +unsigned int au_opt_udba(struct super_block *sb); + +#endif /* __KERNEL__ */ +#endif /* __AUFS_OPTS_H__ */ diff --git a/fs/aufs/plink.c b/fs/aufs/plink.c new file mode 100644 index 00000000000..aa634cbbcfd --- /dev/null +++ b/fs/aufs/plink.c @@ -0,0 +1,516 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * pseudo-link + */ + +#include "aufs.h" + +/* + * the pseudo-link maintenance mode. + * during a user process maintains the pseudo-links, + * prohibit adding a new plink and branch manipulation. + * + * Flags + * NOPLM: + * For entry functions which will handle plink, and i_mutex is already held + * in VFS. + * They cannot wait and should return an error at once. + * Callers has to check the error. + * NOPLMW: + * For entry functions which will handle plink, but i_mutex is not held + * in VFS. + * They can wait the plink maintenance mode to finish. + * + * They behave like F_SETLK and F_SETLKW. + * If the caller never handle plink, then both flags are unnecessary. + */ + +int au_plink_maint(struct super_block *sb, int flags) +{ + int err; + pid_t pid, ppid; + struct task_struct *parent, *prev; + struct au_sbinfo *sbi; + + SiMustAnyLock(sb); + + err = 0; + if (!au_opt_test(au_mntflags(sb), PLINK)) + goto out; + + sbi = au_sbi(sb); + pid = sbi->si_plink_maint_pid; + if (!pid || pid == current->pid) + goto out; + + /* todo: it highly depends upon /sbin/mount.aufs */ + prev = NULL; + parent = current; + ppid = 0; + rcu_read_lock(); + while (1) { + parent = rcu_dereference(parent->real_parent); + if (parent == prev) + break; + ppid = task_pid_vnr(parent); + if (pid == ppid) { + rcu_read_unlock(); + goto out; + } + prev = parent; + } + rcu_read_unlock(); + + if (au_ftest_lock(flags, NOPLMW)) { + /* if there is no i_mutex lock in VFS, we don't need to wait */ + /* AuDebugOn(!lockdep_depth(current)); */ + while (sbi->si_plink_maint_pid) { + si_read_unlock(sb); + /* gave up wake_up_bit() */ + wait_event(sbi->si_plink_wq, !sbi->si_plink_maint_pid); + + if (au_ftest_lock(flags, FLUSH)) + au_nwt_flush(&sbi->si_nowait); + si_noflush_read_lock(sb); + } + } else if (au_ftest_lock(flags, NOPLM)) { + AuDbg("ppid %d, pid %d\n", ppid, pid); + err = -EAGAIN; + } + +out: + return err; +} + +void au_plink_maint_leave(struct au_sbinfo *sbinfo) +{ + spin_lock(&sbinfo->si_plink_maint_lock); + sbinfo->si_plink_maint_pid = 0; + spin_unlock(&sbinfo->si_plink_maint_lock); + wake_up_all(&sbinfo->si_plink_wq); +} + +int au_plink_maint_enter(struct super_block *sb) +{ + int err; + struct au_sbinfo *sbinfo; + + err = 0; + sbinfo = au_sbi(sb); + /* make sure i am the only one in this fs */ + si_write_lock(sb, AuLock_FLUSH); + if (au_opt_test(au_mntflags(sb), PLINK)) { + spin_lock(&sbinfo->si_plink_maint_lock); + if (!sbinfo->si_plink_maint_pid) + sbinfo->si_plink_maint_pid = current->pid; + else + err = -EBUSY; + spin_unlock(&sbinfo->si_plink_maint_lock); + } + si_write_unlock(sb); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +#ifdef CONFIG_AUFS_DEBUG +void au_plink_list(struct super_block *sb) +{ + int i; + struct au_sbinfo *sbinfo; + struct hlist_bl_head *hbl; + struct hlist_bl_node *pos; + struct au_icntnr *icntnr; + + SiMustAnyLock(sb); + + sbinfo = au_sbi(sb); + AuDebugOn(!au_opt_test(au_mntflags(sb), PLINK)); + AuDebugOn(au_plink_maint(sb, AuLock_NOPLM)); + + for (i = 0; i < AuPlink_NHASH; i++) { + hbl = sbinfo->si_plink + i; + hlist_bl_lock(hbl); + hlist_bl_for_each_entry(icntnr, pos, hbl, plink) + AuDbg("%lu\n", icntnr->vfs_inode.i_ino); + hlist_bl_unlock(hbl); + } +} +#endif + +/* is the inode pseudo-linked? */ +int au_plink_test(struct inode *inode) +{ + int found, i; + struct au_sbinfo *sbinfo; + struct hlist_bl_head *hbl; + struct hlist_bl_node *pos; + struct au_icntnr *icntnr; + + sbinfo = au_sbi(inode->i_sb); + AuRwMustAnyLock(&sbinfo->si_rwsem); + AuDebugOn(!au_opt_test(au_mntflags(inode->i_sb), PLINK)); + AuDebugOn(au_plink_maint(inode->i_sb, AuLock_NOPLM)); + + found = 0; + i = au_plink_hash(inode->i_ino); + hbl = sbinfo->si_plink + i; + hlist_bl_lock(hbl); + hlist_bl_for_each_entry(icntnr, pos, hbl, plink) + if (&icntnr->vfs_inode == inode) { + found = 1; + break; + } + hlist_bl_unlock(hbl); + return found; +} + +/* ---------------------------------------------------------------------- */ + +/* + * generate a name for plink. + * the file will be stored under AUFS_WH_PLINKDIR. + */ +/* 20 is max digits length of ulong 64 */ +#define PLINK_NAME_LEN ((20 + 1) * 2) + +static int plink_name(char *name, int len, struct inode *inode, + aufs_bindex_t bindex) +{ + int rlen; + struct inode *h_inode; + + h_inode = au_h_iptr(inode, bindex); + rlen = snprintf(name, len, "%lu.%lu", inode->i_ino, h_inode->i_ino); + return rlen; +} + +struct au_do_plink_lkup_args { + struct dentry **errp; + struct qstr *tgtname; + struct dentry *h_parent; + struct au_branch *br; +}; + +static struct dentry *au_do_plink_lkup(struct qstr *tgtname, + struct dentry *h_parent, + struct au_branch *br) +{ + struct dentry *h_dentry; + struct inode *h_inode; + + h_inode = d_inode(h_parent); + inode_lock_shared_nested(h_inode, AuLsc_I_CHILD2); + h_dentry = vfsub_lkup_one(tgtname, h_parent); + inode_unlock_shared(h_inode); + return h_dentry; +} + +static void au_call_do_plink_lkup(void *args) +{ + struct au_do_plink_lkup_args *a = args; + *a->errp = au_do_plink_lkup(a->tgtname, a->h_parent, a->br); +} + +/* lookup the plink-ed @inode under the branch at @bindex */ +struct dentry *au_plink_lkup(struct inode *inode, aufs_bindex_t bindex) +{ + struct dentry *h_dentry, *h_parent; + struct au_branch *br; + int wkq_err; + char a[PLINK_NAME_LEN]; + struct qstr tgtname = QSTR_INIT(a, 0); + + AuDebugOn(au_plink_maint(inode->i_sb, AuLock_NOPLM)); + + br = au_sbr(inode->i_sb, bindex); + h_parent = br->br_wbr->wbr_plink; + tgtname.len = plink_name(a, sizeof(a), inode, bindex); + + if (!uid_eq(current_fsuid(), GLOBAL_ROOT_UID)) { + struct au_do_plink_lkup_args args = { + .errp = &h_dentry, + .tgtname = &tgtname, + .h_parent = h_parent, + .br = br + }; + + wkq_err = au_wkq_wait(au_call_do_plink_lkup, &args); + if (unlikely(wkq_err)) + h_dentry = ERR_PTR(wkq_err); + } else + h_dentry = au_do_plink_lkup(&tgtname, h_parent, br); + + return h_dentry; +} + +/* create a pseudo-link */ +static int do_whplink(struct qstr *tgt, struct dentry *h_parent, + struct dentry *h_dentry, struct au_branch *br) +{ + int err; + struct path h_path = { + .mnt = au_br_mnt(br) + }; + struct inode *h_dir, *delegated; + + h_dir = d_inode(h_parent); + inode_lock_nested(h_dir, AuLsc_I_CHILD2); +again: + h_path.dentry = vfsub_lkup_one(tgt, h_parent); + err = PTR_ERR(h_path.dentry); + if (IS_ERR(h_path.dentry)) + goto out; + + err = 0; + /* wh.plink dir is not monitored */ + /* todo: is it really safe? */ + if (d_is_positive(h_path.dentry) + && d_inode(h_path.dentry) != d_inode(h_dentry)) { + delegated = NULL; + err = vfsub_unlink(h_dir, &h_path, &delegated, /*force*/0); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal unlink\n"); + iput(delegated); + } + dput(h_path.dentry); + h_path.dentry = NULL; + if (!err) + goto again; + } + if (!err && d_is_negative(h_path.dentry)) { + delegated = NULL; + err = vfsub_link(h_dentry, h_dir, &h_path, &delegated); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal link\n"); + iput(delegated); + } + } + dput(h_path.dentry); + +out: + inode_unlock(h_dir); + return err; +} + +struct do_whplink_args { + int *errp; + struct qstr *tgt; + struct dentry *h_parent; + struct dentry *h_dentry; + struct au_branch *br; +}; + +static void call_do_whplink(void *args) +{ + struct do_whplink_args *a = args; + *a->errp = do_whplink(a->tgt, a->h_parent, a->h_dentry, a->br); +} + +static int whplink(struct dentry *h_dentry, struct inode *inode, + aufs_bindex_t bindex, struct au_branch *br) +{ + int err, wkq_err; + struct au_wbr *wbr; + struct dentry *h_parent; + char a[PLINK_NAME_LEN]; + struct qstr tgtname = QSTR_INIT(a, 0); + + wbr = au_sbr(inode->i_sb, bindex)->br_wbr; + h_parent = wbr->wbr_plink; + tgtname.len = plink_name(a, sizeof(a), inode, bindex); + + /* always superio. */ + if (!uid_eq(current_fsuid(), GLOBAL_ROOT_UID)) { + struct do_whplink_args args = { + .errp = &err, + .tgt = &tgtname, + .h_parent = h_parent, + .h_dentry = h_dentry, + .br = br + }; + wkq_err = au_wkq_wait(call_do_whplink, &args); + if (unlikely(wkq_err)) + err = wkq_err; + } else + err = do_whplink(&tgtname, h_parent, h_dentry, br); + + return err; +} + +/* + * create a new pseudo-link for @h_dentry on @bindex. + * the linked inode is held in aufs @inode. + */ +void au_plink_append(struct inode *inode, aufs_bindex_t bindex, + struct dentry *h_dentry) +{ + struct super_block *sb; + struct au_sbinfo *sbinfo; + struct hlist_bl_head *hbl; + struct hlist_bl_node *pos; + struct au_icntnr *icntnr; + int found, err, cnt, i; + + sb = inode->i_sb; + sbinfo = au_sbi(sb); + AuDebugOn(!au_opt_test(au_mntflags(sb), PLINK)); + AuDebugOn(au_plink_maint(sb, AuLock_NOPLM)); + + found = au_plink_test(inode); + if (found) + return; + + i = au_plink_hash(inode->i_ino); + hbl = sbinfo->si_plink + i; + au_igrab(inode); + + hlist_bl_lock(hbl); + hlist_bl_for_each_entry(icntnr, pos, hbl, plink) { + if (&icntnr->vfs_inode == inode) { + found = 1; + break; + } + } + if (!found) { + icntnr = container_of(inode, struct au_icntnr, vfs_inode); + hlist_bl_add_head(&icntnr->plink, hbl); + } + hlist_bl_unlock(hbl); + if (!found) { + cnt = au_hbl_count(hbl); +#define msg "unexpectedly unblanced or too many pseudo-links" + if (cnt > AUFS_PLINK_WARN) + AuWarn1(msg ", %d\n", cnt); +#undef msg + err = whplink(h_dentry, inode, bindex, au_sbr(sb, bindex)); + if (unlikely(err)) { + pr_warn("err %d, damaged pseudo link.\n", err); + au_hbl_del(&icntnr->plink, hbl); + iput(&icntnr->vfs_inode); + } + } else + iput(&icntnr->vfs_inode); +} + +/* free all plinks */ +void au_plink_put(struct super_block *sb, int verbose) +{ + int i, warned; + struct au_sbinfo *sbinfo; + struct hlist_bl_head *hbl; + struct hlist_bl_node *pos, *tmp; + struct au_icntnr *icntnr; + + SiMustWriteLock(sb); + + sbinfo = au_sbi(sb); + AuDebugOn(!au_opt_test(au_mntflags(sb), PLINK)); + AuDebugOn(au_plink_maint(sb, AuLock_NOPLM)); + + /* no spin_lock since sbinfo is write-locked */ + warned = 0; + for (i = 0; i < AuPlink_NHASH; i++) { + hbl = sbinfo->si_plink + i; + if (!warned && verbose && !hlist_bl_empty(hbl)) { + pr_warn("pseudo-link is not flushed"); + warned = 1; + } + hlist_bl_for_each_entry_safe(icntnr, pos, tmp, hbl, plink) + iput(&icntnr->vfs_inode); + INIT_HLIST_BL_HEAD(hbl); + } +} + +void au_plink_clean(struct super_block *sb, int verbose) +{ + struct dentry *root; + + root = sb->s_root; + aufs_write_lock(root); + if (au_opt_test(au_mntflags(sb), PLINK)) + au_plink_put(sb, verbose); + aufs_write_unlock(root); +} + +static int au_plink_do_half_refresh(struct inode *inode, aufs_bindex_t br_id) +{ + int do_put; + aufs_bindex_t btop, bbot, bindex; + + do_put = 0; + btop = au_ibtop(inode); + bbot = au_ibbot(inode); + if (btop >= 0) { + for (bindex = btop; bindex <= bbot; bindex++) { + if (!au_h_iptr(inode, bindex) + || au_ii_br_id(inode, bindex) != br_id) + continue; + au_set_h_iptr(inode, bindex, NULL, 0); + do_put = 1; + break; + } + if (do_put) + for (bindex = btop; bindex <= bbot; bindex++) + if (au_h_iptr(inode, bindex)) { + do_put = 0; + break; + } + } else + do_put = 1; + + return do_put; +} + +/* free the plinks on a branch specified by @br_id */ +void au_plink_half_refresh(struct super_block *sb, aufs_bindex_t br_id) +{ + struct au_sbinfo *sbinfo; + struct hlist_bl_head *hbl; + struct hlist_bl_node *pos, *tmp; + struct au_icntnr *icntnr; + struct inode *inode; + int i, do_put; + + SiMustWriteLock(sb); + + sbinfo = au_sbi(sb); + AuDebugOn(!au_opt_test(au_mntflags(sb), PLINK)); + AuDebugOn(au_plink_maint(sb, AuLock_NOPLM)); + + /* no bit_lock since sbinfo is write-locked */ + for (i = 0; i < AuPlink_NHASH; i++) { + hbl = sbinfo->si_plink + i; + hlist_bl_for_each_entry_safe(icntnr, pos, tmp, hbl, plink) { + inode = au_igrab(&icntnr->vfs_inode); + ii_write_lock_child(inode); + do_put = au_plink_do_half_refresh(inode, br_id); + if (do_put) { + hlist_bl_del(&icntnr->plink); + iput(inode); + } + ii_write_unlock(inode); + iput(inode); + } + } +} diff --git a/fs/aufs/poll.c b/fs/aufs/poll.c new file mode 100644 index 00000000000..a653b6c7485 --- /dev/null +++ b/fs/aufs/poll.c @@ -0,0 +1,51 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * poll operation + * There is only one filesystem which implements ->poll operation, currently. + */ + +#include "aufs.h" + +__poll_t aufs_poll(struct file *file, struct poll_table_struct *pt) +{ + __poll_t mask; + struct file *h_file; + struct super_block *sb; + + /* We should pretend an error happened. */ + mask = EPOLLERR /* | EPOLLIN | EPOLLOUT */; + sb = file->f_path.dentry->d_sb; + si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW); + + h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0); + if (IS_ERR(h_file)) { + AuDbg("h_file %ld\n", PTR_ERR(h_file)); + goto out; + } + + mask = vfs_poll(h_file, pt); + fput(h_file); /* instead of au_read_post() */ + +out: + si_read_unlock(sb); + if (mask & EPOLLERR) + AuDbg("mask 0x%x\n", mask); + return mask; +} diff --git a/fs/aufs/posix_acl.c b/fs/aufs/posix_acl.c new file mode 100644 index 00000000000..9ce21ec9845 --- /dev/null +++ b/fs/aufs/posix_acl.c @@ -0,0 +1,103 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2014-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * posix acl operations + */ + +#include +#include "aufs.h" + +struct posix_acl *aufs_get_acl(struct inode *inode, int type) +{ + struct posix_acl *acl; + int err; + aufs_bindex_t bindex; + struct inode *h_inode; + struct super_block *sb; + + acl = NULL; + sb = inode->i_sb; + si_read_lock(sb, AuLock_FLUSH); + ii_read_lock_child(inode); + if (!(sb->s_flags & SB_POSIXACL)) + goto out; + + bindex = au_ibtop(inode); + h_inode = au_h_iptr(inode, bindex); + if (unlikely(!h_inode + || ((h_inode->i_mode & S_IFMT) + != (inode->i_mode & S_IFMT)))) { + err = au_busy_or_stale(); + acl = ERR_PTR(err); + goto out; + } + + /* always topmost only */ + acl = get_acl(h_inode, type); + if (!IS_ERR_OR_NULL(acl)) + set_cached_acl(inode, type, acl); + +out: + ii_read_unlock(inode); + si_read_unlock(sb); + + AuTraceErrPtr(acl); + return acl; +} + +int aufs_set_acl(struct inode *inode, struct posix_acl *acl, int type) +{ + int err; + ssize_t ssz; + struct dentry *dentry; + struct au_sxattr arg = { + .type = AU_ACL_SET, + .u.acl_set = { + .acl = acl, + .type = type + }, + }; + + IMustLock(inode); + + if (inode->i_ino == AUFS_ROOT_INO) + dentry = dget(inode->i_sb->s_root); + else { + dentry = d_find_alias(inode); + if (!dentry) + dentry = d_find_any_alias(inode); + if (!dentry) { + pr_warn("cannot handle this inode, " + "please report to aufs-users ML\n"); + err = -ENOENT; + goto out; + } + } + + ssz = au_sxattr(dentry, inode, &arg); + dput(dentry); + err = ssz; + if (ssz >= 0) { + err = 0; + set_cached_acl(inode, type, acl); + } + +out: + return err; +} diff --git a/fs/aufs/procfs.c b/fs/aufs/procfs.c new file mode 100644 index 00000000000..100dbcfebaa --- /dev/null +++ b/fs/aufs/procfs.c @@ -0,0 +1,171 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2010-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * procfs interfaces + */ + +#include +#include "aufs.h" + +static int au_procfs_plm_release(struct inode *inode, struct file *file) +{ + struct au_sbinfo *sbinfo; + + sbinfo = file->private_data; + if (sbinfo) { + au_plink_maint_leave(sbinfo); + kobject_put(&sbinfo->si_kobj); + } + + return 0; +} + +static void au_procfs_plm_write_clean(struct file *file) +{ + struct au_sbinfo *sbinfo; + + sbinfo = file->private_data; + if (sbinfo) + au_plink_clean(sbinfo->si_sb, /*verbose*/0); +} + +static int au_procfs_plm_write_si(struct file *file, unsigned long id) +{ + int err; + struct super_block *sb; + struct au_sbinfo *sbinfo; + struct hlist_bl_node *pos; + + err = -EBUSY; + if (unlikely(file->private_data)) + goto out; + + sb = NULL; + /* don't use au_sbilist_lock() here */ + hlist_bl_lock(&au_sbilist); + hlist_bl_for_each_entry(sbinfo, pos, &au_sbilist, si_list) + if (id == sysaufs_si_id(sbinfo)) { + kobject_get(&sbinfo->si_kobj); + sb = sbinfo->si_sb; + break; + } + hlist_bl_unlock(&au_sbilist); + + err = -EINVAL; + if (unlikely(!sb)) + goto out; + + err = au_plink_maint_enter(sb); + if (!err) + /* keep kobject_get() */ + file->private_data = sbinfo; + else + kobject_put(&sbinfo->si_kobj); +out: + return err; +} + +/* + * Accept a valid "si=xxxx" only. + * Once it is accepted successfully, accept "clean" too. + */ +static ssize_t au_procfs_plm_write(struct file *file, const char __user *ubuf, + size_t count, loff_t *ppos) +{ + ssize_t err; + unsigned long id; + /* last newline is allowed */ + char buf[3 + sizeof(unsigned long) * 2 + 1]; + + err = -EACCES; + if (unlikely(!capable(CAP_SYS_ADMIN))) + goto out; + + err = -EINVAL; + if (unlikely(count > sizeof(buf))) + goto out; + + err = copy_from_user(buf, ubuf, count); + if (unlikely(err)) { + err = -EFAULT; + goto out; + } + buf[count] = 0; + + err = -EINVAL; + if (!strcmp("clean", buf)) { + au_procfs_plm_write_clean(file); + goto out_success; + } else if (unlikely(strncmp("si=", buf, 3))) + goto out; + + err = kstrtoul(buf + 3, 16, &id); + if (unlikely(err)) + goto out; + + err = au_procfs_plm_write_si(file, id); + if (unlikely(err)) + goto out; + +out_success: + err = count; /* success */ +out: + return err; +} + +static const struct file_operations au_procfs_plm_fop = { + .write = au_procfs_plm_write, + .release = au_procfs_plm_release, + .owner = THIS_MODULE +}; + +/* ---------------------------------------------------------------------- */ + +static struct proc_dir_entry *au_procfs_dir; + +void au_procfs_fin(void) +{ + remove_proc_entry(AUFS_PLINK_MAINT_NAME, au_procfs_dir); + remove_proc_entry(AUFS_PLINK_MAINT_DIR, NULL); +} + +int __init au_procfs_init(void) +{ + int err; + struct proc_dir_entry *entry; + + err = -ENOMEM; + au_procfs_dir = proc_mkdir(AUFS_PLINK_MAINT_DIR, NULL); + if (unlikely(!au_procfs_dir)) + goto out; + + entry = proc_create(AUFS_PLINK_MAINT_NAME, S_IFREG | 0200, + au_procfs_dir, &au_procfs_plm_fop); + if (unlikely(!entry)) + goto out_dir; + + err = 0; + goto out; /* success */ + + +out_dir: + remove_proc_entry(AUFS_PLINK_MAINT_DIR, NULL); +out: + return err; +} diff --git a/fs/aufs/rdu.c b/fs/aufs/rdu.c new file mode 100644 index 00000000000..60f4957b7d2 --- /dev/null +++ b/fs/aufs/rdu.c @@ -0,0 +1,382 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * readdir in userspace. + */ + +#include +#include +#include +#include "aufs.h" + +/* bits for struct aufs_rdu.flags */ +#define AuRdu_CALLED 1 +#define AuRdu_CONT (1 << 1) +#define AuRdu_FULL (1 << 2) +#define au_ftest_rdu(flags, name) ((flags) & AuRdu_##name) +#define au_fset_rdu(flags, name) \ + do { (flags) |= AuRdu_##name; } while (0) +#define au_fclr_rdu(flags, name) \ + do { (flags) &= ~AuRdu_##name; } while (0) + +struct au_rdu_arg { + struct dir_context ctx; + struct aufs_rdu *rdu; + union au_rdu_ent_ul ent; + unsigned long end; + + struct super_block *sb; + int err; +}; + +static int au_rdu_fill(struct dir_context *ctx, const char *name, int nlen, + loff_t offset, u64 h_ino, unsigned int d_type) +{ + int err, len; + struct au_rdu_arg *arg = container_of(ctx, struct au_rdu_arg, ctx); + struct aufs_rdu *rdu = arg->rdu; + struct au_rdu_ent ent; + + err = 0; + arg->err = 0; + au_fset_rdu(rdu->cookie.flags, CALLED); + len = au_rdu_len(nlen); + if (arg->ent.ul + len < arg->end) { + ent.ino = h_ino; + ent.bindex = rdu->cookie.bindex; + ent.type = d_type; + ent.nlen = nlen; + if (unlikely(nlen > AUFS_MAX_NAMELEN)) + ent.type = DT_UNKNOWN; + + /* unnecessary to support mmap_sem since this is a dir */ + err = -EFAULT; + if (copy_to_user(arg->ent.e, &ent, sizeof(ent))) + goto out; + if (copy_to_user(arg->ent.e->name, name, nlen)) + goto out; + /* the terminating NULL */ + if (__put_user(0, arg->ent.e->name + nlen)) + goto out; + err = 0; + /* AuDbg("%p, %.*s\n", arg->ent.p, nlen, name); */ + arg->ent.ul += len; + rdu->rent++; + } else { + err = -EFAULT; + au_fset_rdu(rdu->cookie.flags, FULL); + rdu->full = 1; + rdu->tail = arg->ent; + } + +out: + /* AuTraceErr(err); */ + return err; +} + +static int au_rdu_do(struct file *h_file, struct au_rdu_arg *arg) +{ + int err; + loff_t offset; + struct au_rdu_cookie *cookie = &arg->rdu->cookie; + + /* we don't have to care (FMODE_32BITHASH | FMODE_64BITHASH) for ext4 */ + offset = vfsub_llseek(h_file, cookie->h_pos, SEEK_SET); + err = offset; + if (unlikely(offset != cookie->h_pos)) + goto out; + + err = 0; + do { + arg->err = 0; + au_fclr_rdu(cookie->flags, CALLED); + /* smp_mb(); */ + err = vfsub_iterate_dir(h_file, &arg->ctx); + if (err >= 0) + err = arg->err; + } while (!err + && au_ftest_rdu(cookie->flags, CALLED) + && !au_ftest_rdu(cookie->flags, FULL)); + cookie->h_pos = h_file->f_pos; + +out: + AuTraceErr(err); + return err; +} + +static int au_rdu(struct file *file, struct aufs_rdu *rdu) +{ + int err; + aufs_bindex_t bbot; + struct au_rdu_arg arg = { + .ctx = { + .actor = au_rdu_fill + } + }; + struct dentry *dentry; + struct inode *inode; + struct file *h_file; + struct au_rdu_cookie *cookie = &rdu->cookie; + + err = !access_ok(VERIFY_WRITE, rdu->ent.e, rdu->sz); + if (unlikely(err)) { + err = -EFAULT; + AuTraceErr(err); + goto out; + } + rdu->rent = 0; + rdu->tail = rdu->ent; + rdu->full = 0; + arg.rdu = rdu; + arg.ent = rdu->ent; + arg.end = arg.ent.ul; + arg.end += rdu->sz; + + err = -ENOTDIR; + if (unlikely(!file->f_op->iterate && !file->f_op->iterate_shared)) + goto out; + + err = security_file_permission(file, MAY_READ); + AuTraceErr(err); + if (unlikely(err)) + goto out; + + dentry = file->f_path.dentry; + inode = d_inode(dentry); + inode_lock_shared(inode); + + arg.sb = inode->i_sb; + err = si_read_lock(arg.sb, AuLock_FLUSH | AuLock_NOPLM); + if (unlikely(err)) + goto out_mtx; + err = au_alive_dir(dentry); + if (unlikely(err)) + goto out_si; + /* todo: reval? */ + fi_read_lock(file); + + err = -EAGAIN; + if (unlikely(au_ftest_rdu(cookie->flags, CONT) + && cookie->generation != au_figen(file))) + goto out_unlock; + + err = 0; + if (!rdu->blk) { + rdu->blk = au_sbi(arg.sb)->si_rdblk; + if (!rdu->blk) + rdu->blk = au_dir_size(file, /*dentry*/NULL); + } + bbot = au_fbtop(file); + if (cookie->bindex < bbot) + cookie->bindex = bbot; + bbot = au_fbbot_dir(file); + /* AuDbg("b%d, b%d\n", cookie->bindex, bbot); */ + for (; !err && cookie->bindex <= bbot; + cookie->bindex++, cookie->h_pos = 0) { + h_file = au_hf_dir(file, cookie->bindex); + if (!h_file) + continue; + + au_fclr_rdu(cookie->flags, FULL); + err = au_rdu_do(h_file, &arg); + AuTraceErr(err); + if (unlikely(au_ftest_rdu(cookie->flags, FULL) || err)) + break; + } + AuDbg("rent %llu\n", rdu->rent); + + if (!err && !au_ftest_rdu(cookie->flags, CONT)) { + rdu->shwh = !!au_opt_test(au_sbi(arg.sb)->si_mntflags, SHWH); + au_fset_rdu(cookie->flags, CONT); + cookie->generation = au_figen(file); + } + + ii_read_lock_child(inode); + fsstack_copy_attr_atime(inode, au_h_iptr(inode, au_ibtop(inode))); + ii_read_unlock(inode); + +out_unlock: + fi_read_unlock(file); +out_si: + si_read_unlock(arg.sb); +out_mtx: + inode_unlock_shared(inode); +out: + AuTraceErr(err); + return err; +} + +static int au_rdu_ino(struct file *file, struct aufs_rdu *rdu) +{ + int err; + ino_t ino; + unsigned long long nent; + union au_rdu_ent_ul *u; + struct au_rdu_ent ent; + struct super_block *sb; + + err = 0; + nent = rdu->nent; + u = &rdu->ent; + sb = file->f_path.dentry->d_sb; + si_read_lock(sb, AuLock_FLUSH); + while (nent-- > 0) { + /* unnecessary to support mmap_sem since this is a dir */ + err = copy_from_user(&ent, u->e, sizeof(ent)); + if (!err) + err = !access_ok(VERIFY_WRITE, &u->e->ino, sizeof(ino)); + if (unlikely(err)) { + err = -EFAULT; + AuTraceErr(err); + break; + } + + /* AuDbg("b%d, i%llu\n", ent.bindex, ent.ino); */ + if (!ent.wh) + err = au_ino(sb, ent.bindex, ent.ino, ent.type, &ino); + else + err = au_wh_ino(sb, ent.bindex, ent.ino, ent.type, + &ino); + if (unlikely(err)) { + AuTraceErr(err); + break; + } + + err = __put_user(ino, &u->e->ino); + if (unlikely(err)) { + err = -EFAULT; + AuTraceErr(err); + break; + } + u->ul += au_rdu_len(ent.nlen); + } + si_read_unlock(sb); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int au_rdu_verify(struct aufs_rdu *rdu) +{ + AuDbg("rdu{%llu, %p, %u | %u | %llu, %u, %u | " + "%llu, b%d, 0x%x, g%u}\n", + rdu->sz, rdu->ent.e, rdu->verify[AufsCtlRduV_SZ], + rdu->blk, + rdu->rent, rdu->shwh, rdu->full, + rdu->cookie.h_pos, rdu->cookie.bindex, rdu->cookie.flags, + rdu->cookie.generation); + + if (rdu->verify[AufsCtlRduV_SZ] == sizeof(*rdu)) + return 0; + + AuDbg("%u:%u\n", + rdu->verify[AufsCtlRduV_SZ], (unsigned int)sizeof(*rdu)); + return -EINVAL; +} + +long au_rdu_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + long err, e; + struct aufs_rdu rdu; + void __user *p = (void __user *)arg; + + err = copy_from_user(&rdu, p, sizeof(rdu)); + if (unlikely(err)) { + err = -EFAULT; + AuTraceErr(err); + goto out; + } + err = au_rdu_verify(&rdu); + if (unlikely(err)) + goto out; + + switch (cmd) { + case AUFS_CTL_RDU: + err = au_rdu(file, &rdu); + if (unlikely(err)) + break; + + e = copy_to_user(p, &rdu, sizeof(rdu)); + if (unlikely(e)) { + err = -EFAULT; + AuTraceErr(err); + } + break; + case AUFS_CTL_RDU_INO: + err = au_rdu_ino(file, &rdu); + break; + + default: + /* err = -ENOTTY; */ + err = -EINVAL; + } + +out: + AuTraceErr(err); + return err; +} + +#ifdef CONFIG_COMPAT +long au_rdu_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + long err, e; + struct aufs_rdu rdu; + void __user *p = compat_ptr(arg); + + /* todo: get_user()? */ + err = copy_from_user(&rdu, p, sizeof(rdu)); + if (unlikely(err)) { + err = -EFAULT; + AuTraceErr(err); + goto out; + } + rdu.ent.e = compat_ptr(rdu.ent.ul); + err = au_rdu_verify(&rdu); + if (unlikely(err)) + goto out; + + switch (cmd) { + case AUFS_CTL_RDU: + err = au_rdu(file, &rdu); + if (unlikely(err)) + break; + + rdu.ent.ul = ptr_to_compat(rdu.ent.e); + rdu.tail.ul = ptr_to_compat(rdu.tail.e); + e = copy_to_user(p, &rdu, sizeof(rdu)); + if (unlikely(e)) { + err = -EFAULT; + AuTraceErr(err); + } + break; + case AUFS_CTL_RDU_INO: + err = au_rdu_ino(file, &rdu); + break; + + default: + /* err = -ENOTTY; */ + err = -EINVAL; + } + +out: + AuTraceErr(err); + return err; +} +#endif diff --git a/fs/aufs/rwsem.h b/fs/aufs/rwsem.h new file mode 100644 index 00000000000..22ff55e6c64 --- /dev/null +++ b/fs/aufs/rwsem.h @@ -0,0 +1,73 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * simple read-write semaphore wrappers + */ + +#ifndef __AUFS_RWSEM_H__ +#define __AUFS_RWSEM_H__ + +#ifdef __KERNEL__ + +#include "debug.h" + +/* in the futre, the name 'au_rwsem' will be totally gone */ +#define au_rwsem rw_semaphore + +/* to debug easier, do not make them inlined functions */ +#define AuRwMustNoWaiters(rw) AuDebugOn(rwsem_is_contended(rw)) +/* rwsem_is_locked() is unusable */ +#define AuRwMustReadLock(rw) AuDebugOn(!lockdep_recursing(current) \ + && debug_locks \ + && !lockdep_is_held_type(rw, 1)) +#define AuRwMustWriteLock(rw) AuDebugOn(!lockdep_recursing(current) \ + && debug_locks \ + && !lockdep_is_held_type(rw, 0)) +#define AuRwMustAnyLock(rw) AuDebugOn(!lockdep_recursing(current) \ + && debug_locks \ + && !lockdep_is_held(rw)) +#define AuRwDestroy(rw) AuDebugOn(!lockdep_recursing(current) \ + && debug_locks \ + && lockdep_is_held(rw)) + +#define au_rw_init(rw) init_rwsem(rw) + +#define au_rw_init_wlock(rw) do { \ + au_rw_init(rw); \ + down_write(rw); \ + } while (0) + +#define au_rw_init_wlock_nested(rw, lsc) do { \ + au_rw_init(rw); \ + down_write_nested(rw, lsc); \ + } while (0) + +#define au_rw_read_lock(rw) down_read(rw) +#define au_rw_read_lock_nested(rw, lsc) down_read_nested(rw, lsc) +#define au_rw_read_unlock(rw) up_read(rw) +#define au_rw_dgrade_lock(rw) downgrade_write(rw) +#define au_rw_write_lock(rw) down_write(rw) +#define au_rw_write_lock_nested(rw, lsc) down_write_nested(rw, lsc) +#define au_rw_write_unlock(rw) up_write(rw) +/* why is not _nested version defined? */ +#define au_rw_read_trylock(rw) down_read_trylock(rw) +#define au_rw_write_trylock(rw) down_write_trylock(rw) + +#endif /* __KERNEL__ */ +#endif /* __AUFS_RWSEM_H__ */ diff --git a/fs/aufs/sbinfo.c b/fs/aufs/sbinfo.c new file mode 100644 index 00000000000..21dd45889ca --- /dev/null +++ b/fs/aufs/sbinfo.c @@ -0,0 +1,312 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * superblock private data + */ + +#include "aufs.h" + +/* + * they are necessary regardless sysfs is disabled. + */ +void au_si_free(struct kobject *kobj) +{ + int i; + struct au_sbinfo *sbinfo; + char *locked __maybe_unused; /* debug only */ + + sbinfo = container_of(kobj, struct au_sbinfo, si_kobj); + for (i = 0; i < AuPlink_NHASH; i++) + AuDebugOn(!hlist_bl_empty(sbinfo->si_plink + i)); + AuDebugOn(atomic_read(&sbinfo->si_nowait.nw_len)); + + AuDebugOn(percpu_counter_sum(&sbinfo->si_ninodes)); + percpu_counter_destroy(&sbinfo->si_ninodes); + AuDebugOn(percpu_counter_sum(&sbinfo->si_nfiles)); + percpu_counter_destroy(&sbinfo->si_nfiles); + + dbgaufs_si_fin(sbinfo); + au_rw_write_lock(&sbinfo->si_rwsem); + au_br_free(sbinfo); + au_rw_write_unlock(&sbinfo->si_rwsem); + + kfree(sbinfo->si_branch); + mutex_destroy(&sbinfo->si_xib_mtx); + AuRwDestroy(&sbinfo->si_rwsem); + + kfree(sbinfo); +} + +int au_si_alloc(struct super_block *sb) +{ + int err, i; + struct au_sbinfo *sbinfo; + + err = -ENOMEM; + sbinfo = kzalloc(sizeof(*sbinfo), GFP_NOFS); + if (unlikely(!sbinfo)) + goto out; + + /* will be reallocated separately */ + sbinfo->si_branch = kzalloc(sizeof(*sbinfo->si_branch), GFP_NOFS); + if (unlikely(!sbinfo->si_branch)) + goto out_sbinfo; + + err = sysaufs_si_init(sbinfo); + if (!err) { + dbgaufs_si_null(sbinfo); + err = dbgaufs_si_init(sbinfo); + if (unlikely(err)) + kobject_put(&sbinfo->si_kobj); + } + if (unlikely(err)) + goto out_br; + + au_nwt_init(&sbinfo->si_nowait); + au_rw_init_wlock(&sbinfo->si_rwsem); + + percpu_counter_init(&sbinfo->si_ninodes, 0, GFP_NOFS); + percpu_counter_init(&sbinfo->si_nfiles, 0, GFP_NOFS); + + sbinfo->si_bbot = -1; + sbinfo->si_last_br_id = AUFS_BRANCH_MAX / 2; + + sbinfo->si_wbr_copyup = AuWbrCopyup_Def; + sbinfo->si_wbr_create = AuWbrCreate_Def; + sbinfo->si_wbr_copyup_ops = au_wbr_copyup_ops + sbinfo->si_wbr_copyup; + sbinfo->si_wbr_create_ops = au_wbr_create_ops + sbinfo->si_wbr_create; + + au_fhsm_init(sbinfo); + + sbinfo->si_mntflags = au_opts_plink(AuOpt_Def); + + sbinfo->si_xino_jiffy = jiffies; + sbinfo->si_xino_expire + = msecs_to_jiffies(AUFS_XINO_DEF_SEC * MSEC_PER_SEC); + mutex_init(&sbinfo->si_xib_mtx); + sbinfo->si_xino_brid = -1; + /* leave si_xib_last_pindex and si_xib_next_bit */ + + INIT_HLIST_BL_HEAD(&sbinfo->si_aopen); + + sbinfo->si_rdcache = msecs_to_jiffies(AUFS_RDCACHE_DEF * MSEC_PER_SEC); + sbinfo->si_rdblk = AUFS_RDBLK_DEF; + sbinfo->si_rdhash = AUFS_RDHASH_DEF; + sbinfo->si_dirwh = AUFS_DIRWH_DEF; + + for (i = 0; i < AuPlink_NHASH; i++) + INIT_HLIST_BL_HEAD(sbinfo->si_plink + i); + init_waitqueue_head(&sbinfo->si_plink_wq); + spin_lock_init(&sbinfo->si_plink_maint_lock); + + INIT_HLIST_BL_HEAD(&sbinfo->si_files); + + /* with getattr by default */ + sbinfo->si_iop_array = aufs_iop; + + /* leave other members for sysaufs and si_mnt. */ + sbinfo->si_sb = sb; + sb->s_fs_info = sbinfo; + si_pid_set(sb); + return 0; /* success */ + +out_br: + kfree(sbinfo->si_branch); +out_sbinfo: + kfree(sbinfo); +out: + return err; +} + +int au_sbr_realloc(struct au_sbinfo *sbinfo, int nbr, int may_shrink) +{ + int err, sz; + struct au_branch **brp; + + AuRwMustWriteLock(&sbinfo->si_rwsem); + + err = -ENOMEM; + sz = sizeof(*brp) * (sbinfo->si_bbot + 1); + if (unlikely(!sz)) + sz = sizeof(*brp); + brp = au_kzrealloc(sbinfo->si_branch, sz, sizeof(*brp) * nbr, GFP_NOFS, + may_shrink); + if (brp) { + sbinfo->si_branch = brp; + err = 0; + } + + return err; +} + +/* ---------------------------------------------------------------------- */ + +unsigned int au_sigen_inc(struct super_block *sb) +{ + unsigned int gen; + struct inode *inode; + + SiMustWriteLock(sb); + + gen = ++au_sbi(sb)->si_generation; + au_update_digen(sb->s_root); + inode = d_inode(sb->s_root); + au_update_iigen(inode, /*half*/0); + inode_inc_iversion(inode); + return gen; +} + +aufs_bindex_t au_new_br_id(struct super_block *sb) +{ + aufs_bindex_t br_id; + int i; + struct au_sbinfo *sbinfo; + + SiMustWriteLock(sb); + + sbinfo = au_sbi(sb); + for (i = 0; i <= AUFS_BRANCH_MAX; i++) { + br_id = ++sbinfo->si_last_br_id; + AuDebugOn(br_id < 0); + if (br_id && au_br_index(sb, br_id) < 0) + return br_id; + } + + return -1; +} + +/* ---------------------------------------------------------------------- */ + +/* it is ok that new 'nwt' tasks are appended while we are sleeping */ +int si_read_lock(struct super_block *sb, int flags) +{ + int err; + + err = 0; + if (au_ftest_lock(flags, FLUSH)) + au_nwt_flush(&au_sbi(sb)->si_nowait); + + si_noflush_read_lock(sb); + err = au_plink_maint(sb, flags); + if (unlikely(err)) + si_read_unlock(sb); + + return err; +} + +int si_write_lock(struct super_block *sb, int flags) +{ + int err; + + if (au_ftest_lock(flags, FLUSH)) + au_nwt_flush(&au_sbi(sb)->si_nowait); + + si_noflush_write_lock(sb); + err = au_plink_maint(sb, flags); + if (unlikely(err)) + si_write_unlock(sb); + + return err; +} + +/* dentry and super_block lock. call at entry point */ +int aufs_read_lock(struct dentry *dentry, int flags) +{ + int err; + struct super_block *sb; + + sb = dentry->d_sb; + err = si_read_lock(sb, flags); + if (unlikely(err)) + goto out; + + if (au_ftest_lock(flags, DW)) + di_write_lock_child(dentry); + else + di_read_lock_child(dentry, flags); + + if (au_ftest_lock(flags, GEN)) { + err = au_digen_test(dentry, au_sigen(sb)); + if (!au_opt_test(au_mntflags(sb), UDBA_NONE)) + AuDebugOn(!err && au_dbrange_test(dentry)); + else if (!err) + err = au_dbrange_test(dentry); + if (unlikely(err)) + aufs_read_unlock(dentry, flags); + } + +out: + return err; +} + +void aufs_read_unlock(struct dentry *dentry, int flags) +{ + if (au_ftest_lock(flags, DW)) + di_write_unlock(dentry); + else + di_read_unlock(dentry, flags); + si_read_unlock(dentry->d_sb); +} + +void aufs_write_lock(struct dentry *dentry) +{ + si_write_lock(dentry->d_sb, AuLock_FLUSH | AuLock_NOPLMW); + di_write_lock_child(dentry); +} + +void aufs_write_unlock(struct dentry *dentry) +{ + di_write_unlock(dentry); + si_write_unlock(dentry->d_sb); +} + +int aufs_read_and_write_lock2(struct dentry *d1, struct dentry *d2, int flags) +{ + int err; + unsigned int sigen; + struct super_block *sb; + + sb = d1->d_sb; + err = si_read_lock(sb, flags); + if (unlikely(err)) + goto out; + + di_write_lock2_child(d1, d2, au_ftest_lock(flags, DIRS)); + + if (au_ftest_lock(flags, GEN)) { + sigen = au_sigen(sb); + err = au_digen_test(d1, sigen); + AuDebugOn(!err && au_dbrange_test(d1)); + if (!err) { + err = au_digen_test(d2, sigen); + AuDebugOn(!err && au_dbrange_test(d2)); + } + if (unlikely(err)) + aufs_read_and_write_unlock2(d1, d2); + } + +out: + return err; +} + +void aufs_read_and_write_unlock2(struct dentry *d1, struct dentry *d2) +{ + di_write_unlock2(d1, d2); + si_read_unlock(d1->d_sb); +} diff --git a/fs/aufs/super.c b/fs/aufs/super.c new file mode 100644 index 00000000000..f5a7533490a --- /dev/null +++ b/fs/aufs/super.c @@ -0,0 +1,1043 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * mount and super_block operations + */ + +#include +#include +#include +#include +#include "aufs.h" + +/* + * super_operations + */ +static struct inode *aufs_alloc_inode(struct super_block *sb __maybe_unused) +{ + struct au_icntnr *c; + + c = au_cache_alloc_icntnr(); + if (c) { + au_icntnr_init(c); + inode_set_iversion(&c->vfs_inode, 1); /* sigen(sb); */ + c->iinfo.ii_hinode = NULL; + return &c->vfs_inode; + } + return NULL; +} + +static void aufs_destroy_inode_cb(struct rcu_head *head) +{ + struct inode *inode = container_of(head, struct inode, i_rcu); + + au_cache_free_icntnr(container_of(inode, struct au_icntnr, vfs_inode)); +} + +static void aufs_destroy_inode(struct inode *inode) +{ + if (!au_is_bad_inode(inode)) + au_iinfo_fin(inode); + call_rcu(&inode->i_rcu, aufs_destroy_inode_cb); +} + +struct inode *au_iget_locked(struct super_block *sb, ino_t ino) +{ + struct inode *inode; + int err; + + inode = iget_locked(sb, ino); + if (unlikely(!inode)) { + inode = ERR_PTR(-ENOMEM); + goto out; + } + if (!(inode->i_state & I_NEW)) + goto out; + + err = au_xigen_new(inode); + if (!err) + err = au_iinfo_init(inode); + if (!err) + inode_inc_iversion(inode); + else { + iget_failed(inode); + inode = ERR_PTR(err); + } + +out: + /* never return NULL */ + AuDebugOn(!inode); + AuTraceErrPtr(inode); + return inode; +} + +/* lock free root dinfo */ +static int au_show_brs(struct seq_file *seq, struct super_block *sb) +{ + int err; + aufs_bindex_t bindex, bbot; + struct path path; + struct au_hdentry *hdp; + struct au_branch *br; + au_br_perm_str_t perm; + + err = 0; + bbot = au_sbbot(sb); + bindex = 0; + hdp = au_hdentry(au_di(sb->s_root), bindex); + for (; !err && bindex <= bbot; bindex++, hdp++) { + br = au_sbr(sb, bindex); + path.mnt = au_br_mnt(br); + path.dentry = hdp->hd_dentry; + err = au_seq_path(seq, &path); + if (!err) { + au_optstr_br_perm(&perm, br->br_perm); + seq_printf(seq, "=%s", perm.a); + if (bindex != bbot) + seq_putc(seq, ':'); + } + } + if (unlikely(err || seq_has_overflowed(seq))) + err = -E2BIG; + + return err; +} + +static void au_gen_fmt(char *fmt, int len __maybe_unused, const char *pat, + const char *append) +{ + char *p; + + p = fmt; + while (*pat != ':') + *p++ = *pat++; + *p++ = *pat++; + strcpy(p, append); + AuDebugOn(strlen(fmt) >= len); +} + +static void au_show_wbr_create(struct seq_file *m, int v, + struct au_sbinfo *sbinfo) +{ + const char *pat; + char fmt[32]; + struct au_wbr_mfs *mfs; + + AuRwMustAnyLock(&sbinfo->si_rwsem); + + seq_puts(m, ",create="); + pat = au_optstr_wbr_create(v); + mfs = &sbinfo->si_wbr_mfs; + switch (v) { + case AuWbrCreate_TDP: + case AuWbrCreate_RR: + case AuWbrCreate_MFS: + case AuWbrCreate_PMFS: + seq_puts(m, pat); + break; + case AuWbrCreate_MFSRR: + case AuWbrCreate_TDMFS: + case AuWbrCreate_PMFSRR: + au_gen_fmt(fmt, sizeof(fmt), pat, "%llu"); + seq_printf(m, fmt, mfs->mfsrr_watermark); + break; + case AuWbrCreate_MFSV: + case AuWbrCreate_PMFSV: + au_gen_fmt(fmt, sizeof(fmt), pat, "%lu"); + seq_printf(m, fmt, + jiffies_to_msecs(mfs->mfs_expire) + / MSEC_PER_SEC); + break; + case AuWbrCreate_MFSRRV: + case AuWbrCreate_TDMFSV: + case AuWbrCreate_PMFSRRV: + au_gen_fmt(fmt, sizeof(fmt), pat, "%llu:%lu"); + seq_printf(m, fmt, mfs->mfsrr_watermark, + jiffies_to_msecs(mfs->mfs_expire) / MSEC_PER_SEC); + break; + default: + BUG(); + } +} + +static int au_show_xino(struct seq_file *seq, struct super_block *sb) +{ +#ifdef CONFIG_SYSFS + return 0; +#else + int err; + const int len = sizeof(AUFS_XINO_FNAME) - 1; + aufs_bindex_t bindex, brid; + struct qstr *name; + struct file *f; + struct dentry *d, *h_root; + + AuRwMustAnyLock(&sbinfo->si_rwsem); + + err = 0; + f = au_sbi(sb)->si_xib; + if (!f) + goto out; + + /* stop printing the default xino path on the first writable branch */ + h_root = NULL; + brid = au_xino_brid(sb); + if (brid >= 0) { + bindex = au_br_index(sb, brid); + h_root = au_hdentry(au_di(sb->s_root), bindex)->hd_dentry; + } + d = f->f_path.dentry; + name = &d->d_name; + /* safe ->d_parent because the file is unlinked */ + if (d->d_parent == h_root + && name->len == len + && !memcmp(name->name, AUFS_XINO_FNAME, len)) + goto out; + + seq_puts(seq, ",xino="); + err = au_xino_path(seq, f); + +out: + return err; +#endif +} + +/* seq_file will re-call me in case of too long string */ +static int aufs_show_options(struct seq_file *m, struct dentry *dentry) +{ + int err; + unsigned int mnt_flags, v; + struct super_block *sb; + struct au_sbinfo *sbinfo; + +#define AuBool(name, str) do { \ + v = au_opt_test(mnt_flags, name); \ + if (v != au_opt_test(AuOpt_Def, name)) \ + seq_printf(m, ",%s" #str, v ? "" : "no"); \ +} while (0) + +#define AuStr(name, str) do { \ + v = mnt_flags & AuOptMask_##name; \ + if (v != (AuOpt_Def & AuOptMask_##name)) \ + seq_printf(m, "," #str "=%s", au_optstr_##str(v)); \ +} while (0) + +#define AuUInt(name, str, val) do { \ + if (val != AUFS_##name##_DEF) \ + seq_printf(m, "," #str "=%u", val); \ +} while (0) + + sb = dentry->d_sb; + if (sb->s_flags & SB_POSIXACL) + seq_puts(m, ",acl"); +#if 0 + if (sb->s_flags & SB_I_VERSION) + seq_puts(m, ",i_version"); +#endif + + /* lock free root dinfo */ + si_noflush_read_lock(sb); + sbinfo = au_sbi(sb); + seq_printf(m, ",si=%lx", sysaufs_si_id(sbinfo)); + + mnt_flags = au_mntflags(sb); + if (au_opt_test(mnt_flags, XINO)) { + err = au_show_xino(m, sb); + if (unlikely(err)) + goto out; + } else + seq_puts(m, ",noxino"); + + AuBool(TRUNC_XINO, trunc_xino); + AuStr(UDBA, udba); + AuBool(SHWH, shwh); + AuBool(PLINK, plink); + AuBool(DIO, dio); + AuBool(DIRPERM1, dirperm1); + + v = sbinfo->si_wbr_create; + if (v != AuWbrCreate_Def) + au_show_wbr_create(m, v, sbinfo); + + v = sbinfo->si_wbr_copyup; + if (v != AuWbrCopyup_Def) + seq_printf(m, ",cpup=%s", au_optstr_wbr_copyup(v)); + + v = au_opt_test(mnt_flags, ALWAYS_DIROPQ); + if (v != au_opt_test(AuOpt_Def, ALWAYS_DIROPQ)) + seq_printf(m, ",diropq=%c", v ? 'a' : 'w'); + + AuUInt(DIRWH, dirwh, sbinfo->si_dirwh); + + v = jiffies_to_msecs(sbinfo->si_rdcache) / MSEC_PER_SEC; + AuUInt(RDCACHE, rdcache, v); + + AuUInt(RDBLK, rdblk, sbinfo->si_rdblk); + AuUInt(RDHASH, rdhash, sbinfo->si_rdhash); + + au_fhsm_show(m, sbinfo); + + AuBool(DIRREN, dirren); + AuBool(SUM, sum); + /* AuBool(SUM_W, wsum); */ + AuBool(WARN_PERM, warn_perm); + AuBool(VERBOSE, verbose); + +out: + /* be sure to print "br:" last */ + if (!sysaufs_brs) { + seq_puts(m, ",br:"); + au_show_brs(m, sb); + } + si_read_unlock(sb); + return 0; + +#undef AuBool +#undef AuStr +#undef AuUInt +} + +/* ---------------------------------------------------------------------- */ + +/* sum mode which returns the summation for statfs(2) */ + +static u64 au_add_till_max(u64 a, u64 b) +{ + u64 old; + + old = a; + a += b; + if (old <= a) + return a; + return ULLONG_MAX; +} + +static u64 au_mul_till_max(u64 a, long mul) +{ + u64 old; + + old = a; + a *= mul; + if (old <= a) + return a; + return ULLONG_MAX; +} + +static int au_statfs_sum(struct super_block *sb, struct kstatfs *buf) +{ + int err; + long bsize, factor; + u64 blocks, bfree, bavail, files, ffree; + aufs_bindex_t bbot, bindex, i; + unsigned char shared; + struct path h_path; + struct super_block *h_sb; + + err = 0; + bsize = LONG_MAX; + files = 0; + ffree = 0; + blocks = 0; + bfree = 0; + bavail = 0; + bbot = au_sbbot(sb); + for (bindex = 0; bindex <= bbot; bindex++) { + h_path.mnt = au_sbr_mnt(sb, bindex); + h_sb = h_path.mnt->mnt_sb; + shared = 0; + for (i = 0; !shared && i < bindex; i++) + shared = (au_sbr_sb(sb, i) == h_sb); + if (shared) + continue; + + /* sb->s_root for NFS is unreliable */ + h_path.dentry = h_path.mnt->mnt_root; + err = vfs_statfs(&h_path, buf); + if (unlikely(err)) + goto out; + + if (bsize > buf->f_bsize) { + /* + * we will reduce bsize, so we have to expand blocks + * etc. to match them again + */ + factor = (bsize / buf->f_bsize); + blocks = au_mul_till_max(blocks, factor); + bfree = au_mul_till_max(bfree, factor); + bavail = au_mul_till_max(bavail, factor); + bsize = buf->f_bsize; + } + + factor = (buf->f_bsize / bsize); + blocks = au_add_till_max(blocks, + au_mul_till_max(buf->f_blocks, factor)); + bfree = au_add_till_max(bfree, + au_mul_till_max(buf->f_bfree, factor)); + bavail = au_add_till_max(bavail, + au_mul_till_max(buf->f_bavail, factor)); + files = au_add_till_max(files, buf->f_files); + ffree = au_add_till_max(ffree, buf->f_ffree); + } + + buf->f_bsize = bsize; + buf->f_blocks = blocks; + buf->f_bfree = bfree; + buf->f_bavail = bavail; + buf->f_files = files; + buf->f_ffree = ffree; + buf->f_frsize = 0; + +out: + return err; +} + +static int aufs_statfs(struct dentry *dentry, struct kstatfs *buf) +{ + int err; + struct path h_path; + struct super_block *sb; + + /* lock free root dinfo */ + sb = dentry->d_sb; + si_noflush_read_lock(sb); + if (!au_opt_test(au_mntflags(sb), SUM)) { + /* sb->s_root for NFS is unreliable */ + h_path.mnt = au_sbr_mnt(sb, 0); + h_path.dentry = h_path.mnt->mnt_root; + err = vfs_statfs(&h_path, buf); + } else + err = au_statfs_sum(sb, buf); + si_read_unlock(sb); + + if (!err) { + buf->f_type = AUFS_SUPER_MAGIC; + buf->f_namelen = AUFS_MAX_NAMELEN; + memset(&buf->f_fsid, 0, sizeof(buf->f_fsid)); + } + /* buf->f_bsize = buf->f_blocks = buf->f_bfree = buf->f_bavail = -1; */ + + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int aufs_sync_fs(struct super_block *sb, int wait) +{ + int err, e; + aufs_bindex_t bbot, bindex; + struct au_branch *br; + struct super_block *h_sb; + + err = 0; + si_noflush_read_lock(sb); + bbot = au_sbbot(sb); + for (bindex = 0; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + if (!au_br_writable(br->br_perm)) + continue; + + h_sb = au_sbr_sb(sb, bindex); + e = vfsub_sync_filesystem(h_sb, wait); + if (unlikely(e && !err)) + err = e; + /* go on even if an error happens */ + } + si_read_unlock(sb); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* final actions when unmounting a file system */ +static void aufs_put_super(struct super_block *sb) +{ + struct au_sbinfo *sbinfo; + + sbinfo = au_sbi(sb); + if (sbinfo) + kobject_put(&sbinfo->si_kobj); +} + +/* ---------------------------------------------------------------------- */ + +void *au_array_alloc(unsigned long long *hint, au_arraycb_t cb, + struct super_block *sb, void *arg) +{ + void *array; + unsigned long long n, sz; + + array = NULL; + n = 0; + if (!*hint) + goto out; + + if (*hint > ULLONG_MAX / sizeof(array)) { + array = ERR_PTR(-EMFILE); + pr_err("hint %llu\n", *hint); + goto out; + } + + sz = sizeof(array) * *hint; + array = kzalloc(sz, GFP_NOFS); + if (unlikely(!array)) + array = vzalloc(sz); + if (unlikely(!array)) { + array = ERR_PTR(-ENOMEM); + goto out; + } + + n = cb(sb, array, *hint, arg); + AuDebugOn(n > *hint); + +out: + *hint = n; + return array; +} + +static unsigned long long au_iarray_cb(struct super_block *sb, void *a, + unsigned long long max __maybe_unused, + void *arg) +{ + unsigned long long n; + struct inode **p, *inode; + struct list_head *head; + + n = 0; + p = a; + head = arg; + spin_lock(&sb->s_inode_list_lock); + list_for_each_entry(inode, head, i_sb_list) { + if (!au_is_bad_inode(inode) + && au_ii(inode)->ii_btop >= 0) { + spin_lock(&inode->i_lock); + if (atomic_read(&inode->i_count)) { + au_igrab(inode); + *p++ = inode; + n++; + AuDebugOn(n > max); + } + spin_unlock(&inode->i_lock); + } + } + spin_unlock(&sb->s_inode_list_lock); + + return n; +} + +struct inode **au_iarray_alloc(struct super_block *sb, unsigned long long *max) +{ + *max = au_ninodes(sb); + return au_array_alloc(max, au_iarray_cb, sb, &sb->s_inodes); +} + +void au_iarray_free(struct inode **a, unsigned long long max) +{ + unsigned long long ull; + + for (ull = 0; ull < max; ull++) + iput(a[ull]); + kvfree(a); +} + +/* ---------------------------------------------------------------------- */ + +/* + * refresh dentry and inode at remount time. + */ +/* todo: consolidate with simple_reval_dpath() and au_reval_for_attr() */ +static int au_do_refresh(struct dentry *dentry, unsigned int dir_flags, + struct dentry *parent) +{ + int err; + + di_write_lock_child(dentry); + di_read_lock_parent(parent, AuLock_IR); + err = au_refresh_dentry(dentry, parent); + if (!err && dir_flags) + au_hn_reset(d_inode(dentry), dir_flags); + di_read_unlock(parent, AuLock_IR); + di_write_unlock(dentry); + + return err; +} + +static int au_do_refresh_d(struct dentry *dentry, unsigned int sigen, + struct au_sbinfo *sbinfo, + const unsigned int dir_flags, unsigned int do_idop) +{ + int err; + struct dentry *parent; + + err = 0; + parent = dget_parent(dentry); + if (!au_digen_test(parent, sigen) && au_digen_test(dentry, sigen)) { + if (d_really_is_positive(dentry)) { + if (!d_is_dir(dentry)) + err = au_do_refresh(dentry, /*dir_flags*/0, + parent); + else { + err = au_do_refresh(dentry, dir_flags, parent); + if (unlikely(err)) + au_fset_si(sbinfo, FAILED_REFRESH_DIR); + } + } else + err = au_do_refresh(dentry, /*dir_flags*/0, parent); + AuDbgDentry(dentry); + } + dput(parent); + + if (!err) { + if (do_idop) + au_refresh_dop(dentry, /*force_reval*/0); + } else + au_refresh_dop(dentry, /*force_reval*/1); + + AuTraceErr(err); + return err; +} + +static int au_refresh_d(struct super_block *sb, unsigned int do_idop) +{ + int err, i, j, ndentry, e; + unsigned int sigen; + struct au_dcsub_pages dpages; + struct au_dpage *dpage; + struct dentry **dentries, *d; + struct au_sbinfo *sbinfo; + struct dentry *root = sb->s_root; + const unsigned int dir_flags = au_hi_flags(d_inode(root), /*isdir*/1); + + if (do_idop) + au_refresh_dop(root, /*force_reval*/0); + + err = au_dpages_init(&dpages, GFP_NOFS); + if (unlikely(err)) + goto out; + err = au_dcsub_pages(&dpages, root, NULL, NULL); + if (unlikely(err)) + goto out_dpages; + + sigen = au_sigen(sb); + sbinfo = au_sbi(sb); + for (i = 0; i < dpages.ndpage; i++) { + dpage = dpages.dpages + i; + dentries = dpage->dentries; + ndentry = dpage->ndentry; + for (j = 0; j < ndentry; j++) { + d = dentries[j]; + e = au_do_refresh_d(d, sigen, sbinfo, dir_flags, + do_idop); + if (unlikely(e && !err)) + err = e; + /* go on even err */ + } + } + +out_dpages: + au_dpages_free(&dpages); +out: + return err; +} + +static int au_refresh_i(struct super_block *sb, unsigned int do_idop) +{ + int err, e; + unsigned int sigen; + unsigned long long max, ull; + struct inode *inode, **array; + + array = au_iarray_alloc(sb, &max); + err = PTR_ERR(array); + if (IS_ERR(array)) + goto out; + + err = 0; + sigen = au_sigen(sb); + for (ull = 0; ull < max; ull++) { + inode = array[ull]; + if (unlikely(!inode)) + break; + + e = 0; + ii_write_lock_child(inode); + if (au_iigen(inode, NULL) != sigen) { + e = au_refresh_hinode_self(inode); + if (unlikely(e)) { + au_refresh_iop(inode, /*force_getattr*/1); + pr_err("error %d, i%lu\n", e, inode->i_ino); + if (!err) + err = e; + /* go on even if err */ + } + } + if (!e && do_idop) + au_refresh_iop(inode, /*force_getattr*/0); + ii_write_unlock(inode); + } + + au_iarray_free(array, max); + +out: + return err; +} + +static void au_remount_refresh(struct super_block *sb, unsigned int do_idop) +{ + int err, e; + unsigned int udba; + aufs_bindex_t bindex, bbot; + struct dentry *root; + struct inode *inode; + struct au_branch *br; + struct au_sbinfo *sbi; + + au_sigen_inc(sb); + sbi = au_sbi(sb); + au_fclr_si(sbi, FAILED_REFRESH_DIR); + + root = sb->s_root; + DiMustNoWaiters(root); + inode = d_inode(root); + IiMustNoWaiters(inode); + + udba = au_opt_udba(sb); + bbot = au_sbbot(sb); + for (bindex = 0; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + err = au_hnotify_reset_br(udba, br, br->br_perm); + if (unlikely(err)) + AuIOErr("hnotify failed on br %d, %d, ignored\n", + bindex, err); + /* go on even if err */ + } + au_hn_reset(inode, au_hi_flags(inode, /*isdir*/1)); + + if (do_idop) { + if (au_ftest_si(sbi, NO_DREVAL)) { + AuDebugOn(sb->s_d_op == &aufs_dop_noreval); + sb->s_d_op = &aufs_dop_noreval; + AuDebugOn(sbi->si_iop_array == aufs_iop_nogetattr); + sbi->si_iop_array = aufs_iop_nogetattr; + } else { + AuDebugOn(sb->s_d_op == &aufs_dop); + sb->s_d_op = &aufs_dop; + AuDebugOn(sbi->si_iop_array == aufs_iop); + sbi->si_iop_array = aufs_iop; + } + pr_info("reset to %ps and %ps\n", + sb->s_d_op, sbi->si_iop_array); + } + + di_write_unlock(root); + err = au_refresh_d(sb, do_idop); + e = au_refresh_i(sb, do_idop); + if (unlikely(e && !err)) + err = e; + /* aufs_write_lock() calls ..._child() */ + di_write_lock_child(root); + + au_cpup_attr_all(inode, /*force*/1); + + if (unlikely(err)) + AuIOErr("refresh failed, ignored, %d\n", err); +} + +/* stop extra interpretation of errno in mount(8), and strange error messages */ +static int cvt_err(int err) +{ + AuTraceErr(err); + + switch (err) { + case -ENOENT: + case -ENOTDIR: + case -EEXIST: + case -EIO: + err = -EINVAL; + } + return err; +} + +static int aufs_remount_fs(struct super_block *sb, int *flags, char *data) +{ + int err, do_dx; + unsigned int mntflags; + struct au_opts opts = { + .opt = NULL + }; + struct dentry *root; + struct inode *inode; + struct au_sbinfo *sbinfo; + + err = 0; + root = sb->s_root; + if (!data || !*data) { + err = si_write_lock(sb, AuLock_FLUSH | AuLock_NOPLM); + if (!err) { + di_write_lock_child(root); + err = au_opts_verify(sb, *flags, /*pending*/0); + aufs_write_unlock(root); + } + goto out; + } + + err = -ENOMEM; + opts.opt = (void *)__get_free_page(GFP_NOFS); + if (unlikely(!opts.opt)) + goto out; + opts.max_opt = PAGE_SIZE / sizeof(*opts.opt); + opts.flags = AuOpts_REMOUNT; + opts.sb_flags = *flags; + + /* parse it before aufs lock */ + err = au_opts_parse(sb, data, &opts); + if (unlikely(err)) + goto out_opts; + + sbinfo = au_sbi(sb); + inode = d_inode(root); + inode_lock(inode); + err = si_write_lock(sb, AuLock_FLUSH | AuLock_NOPLM); + if (unlikely(err)) + goto out_mtx; + di_write_lock_child(root); + + /* au_opts_remount() may return an error */ + err = au_opts_remount(sb, &opts); + au_opts_free(&opts); + + if (au_ftest_opts(opts.flags, REFRESH)) + au_remount_refresh(sb, au_ftest_opts(opts.flags, REFRESH_IDOP)); + + if (au_ftest_opts(opts.flags, REFRESH_DYAOP)) { + mntflags = au_mntflags(sb); + do_dx = !!au_opt_test(mntflags, DIO); + au_dy_arefresh(do_dx); + } + + au_fhsm_wrote_all(sb, /*force*/1); /* ?? */ + aufs_write_unlock(root); + +out_mtx: + inode_unlock(inode); +out_opts: + free_page((unsigned long)opts.opt); +out: + err = cvt_err(err); + AuTraceErr(err); + return err; +} + +static const struct super_operations aufs_sop = { + .alloc_inode = aufs_alloc_inode, + .destroy_inode = aufs_destroy_inode, + /* always deleting, no clearing */ + .drop_inode = generic_delete_inode, + .show_options = aufs_show_options, + .statfs = aufs_statfs, + .put_super = aufs_put_super, + .sync_fs = aufs_sync_fs, + .remount_fs = aufs_remount_fs +}; + +/* ---------------------------------------------------------------------- */ + +static int alloc_root(struct super_block *sb) +{ + int err; + struct inode *inode; + struct dentry *root; + + err = -ENOMEM; + inode = au_iget_locked(sb, AUFS_ROOT_INO); + err = PTR_ERR(inode); + if (IS_ERR(inode)) + goto out; + + inode->i_op = aufs_iop + AuIop_DIR; /* with getattr by default */ + inode->i_fop = &aufs_dir_fop; + inode->i_mode = S_IFDIR; + set_nlink(inode, 2); + unlock_new_inode(inode); + + root = d_make_root(inode); + if (unlikely(!root)) + goto out; + err = PTR_ERR(root); + if (IS_ERR(root)) + goto out; + + err = au_di_init(root); + if (!err) { + sb->s_root = root; + return 0; /* success */ + } + dput(root); + +out: + return err; +} + +static int aufs_fill_super(struct super_block *sb, void *raw_data, + int silent __maybe_unused) +{ + int err; + struct au_opts opts = { + .opt = NULL + }; + struct au_sbinfo *sbinfo; + struct dentry *root; + struct inode *inode; + char *arg = raw_data; + + if (unlikely(!arg || !*arg)) { + err = -EINVAL; + pr_err("no arg\n"); + goto out; + } + + err = -ENOMEM; + opts.opt = (void *)__get_free_page(GFP_NOFS); + if (unlikely(!opts.opt)) + goto out; + opts.max_opt = PAGE_SIZE / sizeof(*opts.opt); + opts.sb_flags = sb->s_flags; + + err = au_si_alloc(sb); + if (unlikely(err)) + goto out_opts; + sbinfo = au_sbi(sb); + + /* all timestamps always follow the ones on the branch */ + sb->s_flags |= SB_NOATIME | SB_NODIRATIME; + sb->s_flags |= SB_I_VERSION; /* do we really need this? */ + sb->s_op = &aufs_sop; + sb->s_d_op = &aufs_dop; + sb->s_magic = AUFS_SUPER_MAGIC; + sb->s_maxbytes = 0; + sb->s_stack_depth = 1; + au_export_init(sb); + au_xattr_init(sb); + + err = alloc_root(sb); + if (unlikely(err)) { + si_write_unlock(sb); + goto out_info; + } + root = sb->s_root; + inode = d_inode(root); + + /* + * actually we can parse options regardless aufs lock here. + * but at remount time, parsing must be done before aufs lock. + * so we follow the same rule. + */ + ii_write_lock_parent(inode); + aufs_write_unlock(root); + err = au_opts_parse(sb, arg, &opts); + if (unlikely(err)) + goto out_root; + + /* lock vfs_inode first, then aufs. */ + inode_lock(inode); + aufs_write_lock(root); + err = au_opts_mount(sb, &opts); + au_opts_free(&opts); + if (!err && au_ftest_si(sbinfo, NO_DREVAL)) { + sb->s_d_op = &aufs_dop_noreval; + pr_info("%ps\n", sb->s_d_op); + au_refresh_dop(root, /*force_reval*/0); + sbinfo->si_iop_array = aufs_iop_nogetattr; + au_refresh_iop(inode, /*force_getattr*/0); + } + aufs_write_unlock(root); + inode_unlock(inode); + if (!err) + goto out_opts; /* success */ + +out_root: + dput(root); + sb->s_root = NULL; +out_info: + kobject_put(&sbinfo->si_kobj); + sb->s_fs_info = NULL; +out_opts: + free_page((unsigned long)opts.opt); +out: + AuTraceErr(err); + err = cvt_err(err); + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static struct dentry *aufs_mount(struct file_system_type *fs_type, int flags, + const char *dev_name __maybe_unused, + void *raw_data) +{ + struct dentry *root; + + /* all timestamps always follow the ones on the branch */ + /* mnt->mnt_flags |= MNT_NOATIME | MNT_NODIRATIME; */ + root = mount_nodev(fs_type, flags, raw_data, aufs_fill_super); + if (IS_ERR(root)) + goto out; + + au_sbilist_add(root->d_sb); + +out: + return root; +} + +static void aufs_kill_sb(struct super_block *sb) +{ + struct au_sbinfo *sbinfo; + + sbinfo = au_sbi(sb); + if (sbinfo) { + au_sbilist_del(sb); + aufs_write_lock(sb->s_root); + au_fhsm_fin(sb); + if (sbinfo->si_wbr_create_ops->fin) + sbinfo->si_wbr_create_ops->fin(sb); + if (au_opt_test(sbinfo->si_mntflags, UDBA_HNOTIFY)) { + au_opt_set_udba(sbinfo->si_mntflags, UDBA_NONE); + au_remount_refresh(sb, /*do_idop*/0); + } + if (au_opt_test(sbinfo->si_mntflags, PLINK)) + au_plink_put(sb, /*verbose*/1); + au_xino_clr(sb); + au_dr_opt_flush(sb); + sbinfo->si_sb = NULL; + aufs_write_unlock(sb->s_root); + au_nwt_flush(&sbinfo->si_nowait); + } + kill_anon_super(sb); +} + +struct file_system_type aufs_fs_type = { + .name = AUFS_FSTYPE, + /* a race between rename and others */ + .fs_flags = FS_RENAME_DOES_D_MOVE, + .mount = aufs_mount, + .kill_sb = aufs_kill_sb, + /* no need to __module_get() and module_put(). */ + .owner = THIS_MODULE, +}; diff --git a/fs/aufs/super.h b/fs/aufs/super.h new file mode 100644 index 00000000000..d4a21be9cc9 --- /dev/null +++ b/fs/aufs/super.h @@ -0,0 +1,627 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * super_block operations + */ + +#ifndef __AUFS_SUPER_H__ +#define __AUFS_SUPER_H__ + +#ifdef __KERNEL__ + +#include +#include +#include "hbl.h" +#include "rwsem.h" +#include "wkq.h" + +/* policies to select one among multiple writable branches */ +struct au_wbr_copyup_operations { + int (*copyup)(struct dentry *dentry); +}; + +#define AuWbr_DIR 1 /* target is a dir */ +#define AuWbr_PARENT (1 << 1) /* always require a parent */ + +#define au_ftest_wbr(flags, name) ((flags) & AuWbr_##name) +#define au_fset_wbr(flags, name) { (flags) |= AuWbr_##name; } +#define au_fclr_wbr(flags, name) { (flags) &= ~AuWbr_##name; } + +struct au_wbr_create_operations { + int (*create)(struct dentry *dentry, unsigned int flags); + int (*init)(struct super_block *sb); + int (*fin)(struct super_block *sb); +}; + +struct au_wbr_mfs { + struct mutex mfs_lock; /* protect this structure */ + unsigned long mfs_jiffy; + unsigned long mfs_expire; + aufs_bindex_t mfs_bindex; + + unsigned long long mfsrr_bytes; + unsigned long long mfsrr_watermark; +}; + +#define AuPlink_NHASH 100 +static inline int au_plink_hash(ino_t ino) +{ + return ino % AuPlink_NHASH; +} + +/* File-based Hierarchical Storage Management */ +struct au_fhsm { +#ifdef CONFIG_AUFS_FHSM + /* allow only one process who can receive the notification */ + spinlock_t fhsm_spin; + pid_t fhsm_pid; + wait_queue_head_t fhsm_wqh; + atomic_t fhsm_readable; + + /* these are protected by si_rwsem */ + unsigned long fhsm_expire; + aufs_bindex_t fhsm_bottom; +#endif +}; + +struct au_branch; +struct au_sbinfo { + /* nowait tasks in the system-wide workqueue */ + struct au_nowait_tasks si_nowait; + + /* + * tried sb->s_umount, but failed due to the dependecy between i_mutex. + * rwsem for au_sbinfo is necessary. + */ + struct au_rwsem si_rwsem; + + /* + * dirty approach to protect sb->sb_inodes and ->s_files (gone) from + * remount. + */ + struct percpu_counter si_ninodes, si_nfiles; + + /* branch management */ + unsigned int si_generation; + + /* see AuSi_ flags */ + unsigned char au_si_status; + + aufs_bindex_t si_bbot; + + /* dirty trick to keep br_id plus */ + unsigned int si_last_br_id : + sizeof(aufs_bindex_t) * BITS_PER_BYTE - 1; + struct au_branch **si_branch; + + /* policy to select a writable branch */ + unsigned char si_wbr_copyup; + unsigned char si_wbr_create; + struct au_wbr_copyup_operations *si_wbr_copyup_ops; + struct au_wbr_create_operations *si_wbr_create_ops; + + /* round robin */ + atomic_t si_wbr_rr_next; + + /* most free space */ + struct au_wbr_mfs si_wbr_mfs; + + /* File-based Hierarchical Storage Management */ + struct au_fhsm si_fhsm; + + /* mount flags */ + /* include/asm-ia64/siginfo.h defines a macro named si_flags */ + unsigned int si_mntflags; + + /* external inode number (bitmap and translation table) */ + vfs_readf_t si_xread; + vfs_writef_t si_xwrite; + struct file *si_xib; + struct mutex si_xib_mtx; /* protect xib members */ + unsigned long *si_xib_buf; + unsigned long si_xib_last_pindex; + int si_xib_next_bit; + aufs_bindex_t si_xino_brid; + unsigned long si_xino_jiffy; + unsigned long si_xino_expire; + /* reserved for future use */ + /* unsigned long long si_xib_limit; */ /* Max xib file size */ + +#ifdef CONFIG_AUFS_EXPORT + /* i_generation */ + struct file *si_xigen; + atomic_t si_xigen_next; +#endif + + /* dirty trick to suppoer atomic_open */ + struct hlist_bl_head si_aopen; + + /* vdir parameters */ + unsigned long si_rdcache; /* max cache time in jiffies */ + unsigned int si_rdblk; /* deblk size */ + unsigned int si_rdhash; /* hash size */ + + /* + * If the number of whiteouts are larger than si_dirwh, leave all of + * them after au_whtmp_ren to reduce the cost of rmdir(2). + * future fsck.aufs or kernel thread will remove them later. + * Otherwise, remove all whiteouts and the dir in rmdir(2). + */ + unsigned int si_dirwh; + + /* pseudo_link list */ + struct hlist_bl_head si_plink[AuPlink_NHASH]; + wait_queue_head_t si_plink_wq; + spinlock_t si_plink_maint_lock; + pid_t si_plink_maint_pid; + + /* file list */ + struct hlist_bl_head si_files; + + /* with/without getattr, brother of sb->s_d_op */ + struct inode_operations *si_iop_array; + + /* + * sysfs and lifetime management. + * this is not a small structure and it may be a waste of memory in case + * of sysfs is disabled, particulary when many aufs-es are mounted. + * but using sysfs is majority. + */ + struct kobject si_kobj; +#ifdef CONFIG_DEBUG_FS + struct dentry *si_dbgaufs; + struct dentry *si_dbgaufs_plink; + struct dentry *si_dbgaufs_xib; +#ifdef CONFIG_AUFS_EXPORT + struct dentry *si_dbgaufs_xigen; +#endif +#endif + +#ifdef CONFIG_AUFS_SBILIST + struct hlist_bl_node si_list; +#endif + + /* dirty, necessary for unmounting, sysfs and sysrq */ + struct super_block *si_sb; +}; + +/* sbinfo status flags */ +/* + * set true when refresh_dirs() failed at remount time. + * then try refreshing dirs at access time again. + * if it is false, refreshing dirs at access time is unnecessary + */ +#define AuSi_FAILED_REFRESH_DIR 1 +#define AuSi_FHSM (1 << 1) /* fhsm is active now */ +#define AuSi_NO_DREVAL (1 << 2) /* disable all d_revalidate */ + +#ifndef CONFIG_AUFS_FHSM +#undef AuSi_FHSM +#define AuSi_FHSM 0 +#endif + +static inline unsigned char au_do_ftest_si(struct au_sbinfo *sbi, + unsigned int flag) +{ + AuRwMustAnyLock(&sbi->si_rwsem); + return sbi->au_si_status & flag; +} +#define au_ftest_si(sbinfo, name) au_do_ftest_si(sbinfo, AuSi_##name) +#define au_fset_si(sbinfo, name) do { \ + AuRwMustWriteLock(&(sbinfo)->si_rwsem); \ + (sbinfo)->au_si_status |= AuSi_##name; \ +} while (0) +#define au_fclr_si(sbinfo, name) do { \ + AuRwMustWriteLock(&(sbinfo)->si_rwsem); \ + (sbinfo)->au_si_status &= ~AuSi_##name; \ +} while (0) + +/* ---------------------------------------------------------------------- */ + +/* policy to select one among writable branches */ +#define AuWbrCopyup(sbinfo, ...) \ + ((sbinfo)->si_wbr_copyup_ops->copyup(__VA_ARGS__)) +#define AuWbrCreate(sbinfo, ...) \ + ((sbinfo)->si_wbr_create_ops->create(__VA_ARGS__)) + +/* flags for si_read_lock()/aufs_read_lock()/di_read_lock() */ +#define AuLock_DW 1 /* write-lock dentry */ +#define AuLock_IR (1 << 1) /* read-lock inode */ +#define AuLock_IW (1 << 2) /* write-lock inode */ +#define AuLock_FLUSH (1 << 3) /* wait for 'nowait' tasks */ +#define AuLock_DIRS (1 << 4) /* target is a pair of dirs */ + /* except RENAME_EXCHANGE */ +#define AuLock_NOPLM (1 << 5) /* return err in plm mode */ +#define AuLock_NOPLMW (1 << 6) /* wait for plm mode ends */ +#define AuLock_GEN (1 << 7) /* test digen/iigen */ +#define au_ftest_lock(flags, name) ((flags) & AuLock_##name) +#define au_fset_lock(flags, name) \ + do { (flags) |= AuLock_##name; } while (0) +#define au_fclr_lock(flags, name) \ + do { (flags) &= ~AuLock_##name; } while (0) + +/* ---------------------------------------------------------------------- */ + +/* super.c */ +extern struct file_system_type aufs_fs_type; +struct inode *au_iget_locked(struct super_block *sb, ino_t ino); +typedef unsigned long long (*au_arraycb_t)(struct super_block *sb, void *array, + unsigned long long max, void *arg); +void *au_array_alloc(unsigned long long *hint, au_arraycb_t cb, + struct super_block *sb, void *arg); +struct inode **au_iarray_alloc(struct super_block *sb, unsigned long long *max); +void au_iarray_free(struct inode **a, unsigned long long max); + +/* sbinfo.c */ +void au_si_free(struct kobject *kobj); +int au_si_alloc(struct super_block *sb); +int au_sbr_realloc(struct au_sbinfo *sbinfo, int nbr, int may_shrink); + +unsigned int au_sigen_inc(struct super_block *sb); +aufs_bindex_t au_new_br_id(struct super_block *sb); + +int si_read_lock(struct super_block *sb, int flags); +int si_write_lock(struct super_block *sb, int flags); +int aufs_read_lock(struct dentry *dentry, int flags); +void aufs_read_unlock(struct dentry *dentry, int flags); +void aufs_write_lock(struct dentry *dentry); +void aufs_write_unlock(struct dentry *dentry); +int aufs_read_and_write_lock2(struct dentry *d1, struct dentry *d2, int flags); +void aufs_read_and_write_unlock2(struct dentry *d1, struct dentry *d2); + +/* wbr_policy.c */ +extern struct au_wbr_copyup_operations au_wbr_copyup_ops[]; +extern struct au_wbr_create_operations au_wbr_create_ops[]; +int au_cpdown_dirs(struct dentry *dentry, aufs_bindex_t bdst); +int au_wbr_nonopq(struct dentry *dentry, aufs_bindex_t bindex); +int au_wbr_do_copyup_bu(struct dentry *dentry, aufs_bindex_t btop); + +/* mvdown.c */ +int au_mvdown(struct dentry *dentry, struct aufs_mvdown __user *arg); + +#ifdef CONFIG_AUFS_FHSM +/* fhsm.c */ + +static inline pid_t au_fhsm_pid(struct au_fhsm *fhsm) +{ + pid_t pid; + + spin_lock(&fhsm->fhsm_spin); + pid = fhsm->fhsm_pid; + spin_unlock(&fhsm->fhsm_spin); + + return pid; +} + +void au_fhsm_wrote(struct super_block *sb, aufs_bindex_t bindex, int force); +void au_fhsm_wrote_all(struct super_block *sb, int force); +int au_fhsm_fd(struct super_block *sb, int oflags); +int au_fhsm_br_alloc(struct au_branch *br); +void au_fhsm_set_bottom(struct super_block *sb, aufs_bindex_t bindex); +void au_fhsm_fin(struct super_block *sb); +void au_fhsm_init(struct au_sbinfo *sbinfo); +void au_fhsm_set(struct au_sbinfo *sbinfo, unsigned int sec); +void au_fhsm_show(struct seq_file *seq, struct au_sbinfo *sbinfo); +#else +AuStubVoid(au_fhsm_wrote, struct super_block *sb, aufs_bindex_t bindex, + int force) +AuStubVoid(au_fhsm_wrote_all, struct super_block *sb, int force) +AuStub(int, au_fhsm_fd, return -EOPNOTSUPP, struct super_block *sb, int oflags) +AuStub(pid_t, au_fhsm_pid, return 0, struct au_fhsm *fhsm) +AuStubInt0(au_fhsm_br_alloc, struct au_branch *br) +AuStubVoid(au_fhsm_set_bottom, struct super_block *sb, aufs_bindex_t bindex) +AuStubVoid(au_fhsm_fin, struct super_block *sb) +AuStubVoid(au_fhsm_init, struct au_sbinfo *sbinfo) +AuStubVoid(au_fhsm_set, struct au_sbinfo *sbinfo, unsigned int sec) +AuStubVoid(au_fhsm_show, struct seq_file *seq, struct au_sbinfo *sbinfo) +#endif + +/* ---------------------------------------------------------------------- */ + +static inline struct au_sbinfo *au_sbi(struct super_block *sb) +{ + return sb->s_fs_info; +} + +/* ---------------------------------------------------------------------- */ + +#ifdef CONFIG_AUFS_EXPORT +int au_test_nfsd(void); +void au_export_init(struct super_block *sb); +void au_xigen_inc(struct inode *inode); +int au_xigen_new(struct inode *inode); +int au_xigen_set(struct super_block *sb, struct path *path); +void au_xigen_clr(struct super_block *sb); + +static inline int au_busy_or_stale(void) +{ + if (!au_test_nfsd()) + return -EBUSY; + return -ESTALE; +} +#else +AuStubInt0(au_test_nfsd, void) +AuStubVoid(au_export_init, struct super_block *sb) +AuStubVoid(au_xigen_inc, struct inode *inode) +AuStubInt0(au_xigen_new, struct inode *inode) +AuStubInt0(au_xigen_set, struct super_block *sb, struct path *path) +AuStubVoid(au_xigen_clr, struct super_block *sb) +AuStub(int, au_busy_or_stale, return -EBUSY, void) +#endif /* CONFIG_AUFS_EXPORT */ + +/* ---------------------------------------------------------------------- */ + +#ifdef CONFIG_AUFS_SBILIST +/* module.c */ +extern struct hlist_bl_head au_sbilist; + +static inline void au_sbilist_init(void) +{ + INIT_HLIST_BL_HEAD(&au_sbilist); +} + +static inline void au_sbilist_add(struct super_block *sb) +{ + au_hbl_add(&au_sbi(sb)->si_list, &au_sbilist); +} + +static inline void au_sbilist_del(struct super_block *sb) +{ + au_hbl_del(&au_sbi(sb)->si_list, &au_sbilist); +} + +#ifdef CONFIG_AUFS_MAGIC_SYSRQ +static inline void au_sbilist_lock(void) +{ + hlist_bl_lock(&au_sbilist); +} + +static inline void au_sbilist_unlock(void) +{ + hlist_bl_unlock(&au_sbilist); +} +#define AuGFP_SBILIST GFP_ATOMIC +#else +AuStubVoid(au_sbilist_lock, void) +AuStubVoid(au_sbilist_unlock, void) +#define AuGFP_SBILIST GFP_NOFS +#endif /* CONFIG_AUFS_MAGIC_SYSRQ */ +#else +AuStubVoid(au_sbilist_init, void) +AuStubVoid(au_sbilist_add, struct super_block *sb) +AuStubVoid(au_sbilist_del, struct super_block *sb) +AuStubVoid(au_sbilist_lock, void) +AuStubVoid(au_sbilist_unlock, void) +#define AuGFP_SBILIST GFP_NOFS +#endif + +/* ---------------------------------------------------------------------- */ + +static inline void dbgaufs_si_null(struct au_sbinfo *sbinfo) +{ + /* + * This function is a dynamic '__init' function actually, + * so the tiny check for si_rwsem is unnecessary. + */ + /* AuRwMustWriteLock(&sbinfo->si_rwsem); */ +#ifdef CONFIG_DEBUG_FS + sbinfo->si_dbgaufs = NULL; + sbinfo->si_dbgaufs_plink = NULL; + sbinfo->si_dbgaufs_xib = NULL; +#ifdef CONFIG_AUFS_EXPORT + sbinfo->si_dbgaufs_xigen = NULL; +#endif +#endif +} + +/* ---------------------------------------------------------------------- */ + +/* current->atomic_flags */ +/* this value should never corrupt the ones defined in linux/sched.h */ +#define PFA_AUFS 7 + +TASK_PFA_TEST(AUFS, test_aufs) /* task_test_aufs */ +TASK_PFA_SET(AUFS, aufs) /* task_set_aufs */ +TASK_PFA_CLEAR(AUFS, aufs) /* task_clear_aufs */ + +static inline int si_pid_test(struct super_block *sb) +{ + return !!task_test_aufs(current); +} + +static inline void si_pid_clr(struct super_block *sb) +{ + AuDebugOn(!task_test_aufs(current)); + task_clear_aufs(current); +} + +static inline void si_pid_set(struct super_block *sb) +{ + AuDebugOn(task_test_aufs(current)); + task_set_aufs(current); +} + +/* ---------------------------------------------------------------------- */ + +/* lock superblock. mainly for entry point functions */ +#define __si_read_lock(sb) au_rw_read_lock(&au_sbi(sb)->si_rwsem) +#define __si_write_lock(sb) au_rw_write_lock(&au_sbi(sb)->si_rwsem) +#define __si_read_trylock(sb) au_rw_read_trylock(&au_sbi(sb)->si_rwsem) +#define __si_write_trylock(sb) au_rw_write_trylock(&au_sbi(sb)->si_rwsem) +/* +#define __si_read_trylock_nested(sb) \ + au_rw_read_trylock_nested(&au_sbi(sb)->si_rwsem) +#define __si_write_trylock_nested(sb) \ + au_rw_write_trylock_nested(&au_sbi(sb)->si_rwsem) +*/ + +#define __si_read_unlock(sb) au_rw_read_unlock(&au_sbi(sb)->si_rwsem) +#define __si_write_unlock(sb) au_rw_write_unlock(&au_sbi(sb)->si_rwsem) +#define __si_downgrade_lock(sb) au_rw_dgrade_lock(&au_sbi(sb)->si_rwsem) + +#define SiMustNoWaiters(sb) AuRwMustNoWaiters(&au_sbi(sb)->si_rwsem) +#define SiMustAnyLock(sb) AuRwMustAnyLock(&au_sbi(sb)->si_rwsem) +#define SiMustWriteLock(sb) AuRwMustWriteLock(&au_sbi(sb)->si_rwsem) + +static inline void si_noflush_read_lock(struct super_block *sb) +{ + __si_read_lock(sb); + si_pid_set(sb); +} + +static inline int si_noflush_read_trylock(struct super_block *sb) +{ + int locked; + + locked = __si_read_trylock(sb); + if (locked) + si_pid_set(sb); + return locked; +} + +static inline void si_noflush_write_lock(struct super_block *sb) +{ + __si_write_lock(sb); + si_pid_set(sb); +} + +static inline int si_noflush_write_trylock(struct super_block *sb) +{ + int locked; + + locked = __si_write_trylock(sb); + if (locked) + si_pid_set(sb); + return locked; +} + +#if 0 /* reserved */ +static inline int si_read_trylock(struct super_block *sb, int flags) +{ + if (au_ftest_lock(flags, FLUSH)) + au_nwt_flush(&au_sbi(sb)->si_nowait); + return si_noflush_read_trylock(sb); +} +#endif + +static inline void si_read_unlock(struct super_block *sb) +{ + si_pid_clr(sb); + __si_read_unlock(sb); +} + +#if 0 /* reserved */ +static inline int si_write_trylock(struct super_block *sb, int flags) +{ + if (au_ftest_lock(flags, FLUSH)) + au_nwt_flush(&au_sbi(sb)->si_nowait); + return si_noflush_write_trylock(sb); +} +#endif + +static inline void si_write_unlock(struct super_block *sb) +{ + si_pid_clr(sb); + __si_write_unlock(sb); +} + +#if 0 /* reserved */ +static inline void si_downgrade_lock(struct super_block *sb) +{ + __si_downgrade_lock(sb); +} +#endif + +/* ---------------------------------------------------------------------- */ + +static inline aufs_bindex_t au_sbbot(struct super_block *sb) +{ + SiMustAnyLock(sb); + return au_sbi(sb)->si_bbot; +} + +static inline unsigned int au_mntflags(struct super_block *sb) +{ + SiMustAnyLock(sb); + return au_sbi(sb)->si_mntflags; +} + +static inline unsigned int au_sigen(struct super_block *sb) +{ + SiMustAnyLock(sb); + return au_sbi(sb)->si_generation; +} + +static inline unsigned long long au_ninodes(struct super_block *sb) +{ + s64 n = percpu_counter_sum(&au_sbi(sb)->si_ninodes); + + BUG_ON(n < 0); + return n; +} + +static inline void au_ninodes_inc(struct super_block *sb) +{ + percpu_counter_inc(&au_sbi(sb)->si_ninodes); +} + +static inline void au_ninodes_dec(struct super_block *sb) +{ + percpu_counter_dec(&au_sbi(sb)->si_ninodes); +} + +static inline unsigned long long au_nfiles(struct super_block *sb) +{ + s64 n = percpu_counter_sum(&au_sbi(sb)->si_nfiles); + + BUG_ON(n < 0); + return n; +} + +static inline void au_nfiles_inc(struct super_block *sb) +{ + percpu_counter_inc(&au_sbi(sb)->si_nfiles); +} + +static inline void au_nfiles_dec(struct super_block *sb) +{ + percpu_counter_dec(&au_sbi(sb)->si_nfiles); +} + +static inline struct au_branch *au_sbr(struct super_block *sb, + aufs_bindex_t bindex) +{ + SiMustAnyLock(sb); + return au_sbi(sb)->si_branch[0 + bindex]; +} + +static inline void au_xino_brid_set(struct super_block *sb, aufs_bindex_t brid) +{ + SiMustWriteLock(sb); + au_sbi(sb)->si_xino_brid = brid; +} + +static inline aufs_bindex_t au_xino_brid(struct super_block *sb) +{ + SiMustAnyLock(sb); + return au_sbi(sb)->si_xino_brid; +} + +#endif /* __KERNEL__ */ +#endif /* __AUFS_SUPER_H__ */ diff --git a/fs/aufs/sysaufs.c b/fs/aufs/sysaufs.c new file mode 100644 index 00000000000..cb34a53f38f --- /dev/null +++ b/fs/aufs/sysaufs.c @@ -0,0 +1,93 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * sysfs interface and lifetime management + * they are necessary regardless sysfs is disabled. + */ + +#include +#include "aufs.h" + +unsigned long sysaufs_si_mask; +struct kset *sysaufs_kset; + +#define AuSiAttr(_name) { \ + .attr = { .name = __stringify(_name), .mode = 0444 }, \ + .show = sysaufs_si_##_name, \ +} + +static struct sysaufs_si_attr sysaufs_si_attr_xi_path = AuSiAttr(xi_path); +struct attribute *sysaufs_si_attrs[] = { + &sysaufs_si_attr_xi_path.attr, + NULL, +}; + +static const struct sysfs_ops au_sbi_ops = { + .show = sysaufs_si_show +}; + +static struct kobj_type au_sbi_ktype = { + .release = au_si_free, + .sysfs_ops = &au_sbi_ops, + .default_attrs = sysaufs_si_attrs +}; + +/* ---------------------------------------------------------------------- */ + +int sysaufs_si_init(struct au_sbinfo *sbinfo) +{ + int err; + + sbinfo->si_kobj.kset = sysaufs_kset; + /* cf. sysaufs_name() */ + err = kobject_init_and_add + (&sbinfo->si_kobj, &au_sbi_ktype, /*&sysaufs_kset->kobj*/NULL, + SysaufsSiNamePrefix "%lx", sysaufs_si_id(sbinfo)); + + return err; +} + +void sysaufs_fin(void) +{ + sysfs_remove_group(&sysaufs_kset->kobj, sysaufs_attr_group); + kset_unregister(sysaufs_kset); +} + +int __init sysaufs_init(void) +{ + int err; + + do { + get_random_bytes(&sysaufs_si_mask, sizeof(sysaufs_si_mask)); + } while (!sysaufs_si_mask); + + err = -EINVAL; + sysaufs_kset = kset_create_and_add(AUFS_NAME, NULL, fs_kobj); + if (unlikely(!sysaufs_kset)) + goto out; + err = PTR_ERR(sysaufs_kset); + if (IS_ERR(sysaufs_kset)) + goto out; + err = sysfs_create_group(&sysaufs_kset->kobj, sysaufs_attr_group); + if (unlikely(err)) + kset_unregister(sysaufs_kset); + +out: + return err; +} diff --git a/fs/aufs/sysaufs.h b/fs/aufs/sysaufs.h new file mode 100644 index 00000000000..9a64191c51b --- /dev/null +++ b/fs/aufs/sysaufs.h @@ -0,0 +1,102 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * sysfs interface and mount lifetime management + */ + +#ifndef __SYSAUFS_H__ +#define __SYSAUFS_H__ + +#ifdef __KERNEL__ + +#include +#include "module.h" + +struct super_block; +struct au_sbinfo; + +struct sysaufs_si_attr { + struct attribute attr; + int (*show)(struct seq_file *seq, struct super_block *sb); +}; + +/* ---------------------------------------------------------------------- */ + +/* sysaufs.c */ +extern unsigned long sysaufs_si_mask; +extern struct kset *sysaufs_kset; +extern struct attribute *sysaufs_si_attrs[]; +int sysaufs_si_init(struct au_sbinfo *sbinfo); +int __init sysaufs_init(void); +void sysaufs_fin(void); + +/* ---------------------------------------------------------------------- */ + +/* some people doesn't like to show a pointer in kernel */ +static inline unsigned long sysaufs_si_id(struct au_sbinfo *sbinfo) +{ + return sysaufs_si_mask ^ (unsigned long)sbinfo; +} + +#define SysaufsSiNamePrefix "si_" +#define SysaufsSiNameLen (sizeof(SysaufsSiNamePrefix) + 16) +static inline void sysaufs_name(struct au_sbinfo *sbinfo, char *name) +{ + snprintf(name, SysaufsSiNameLen, SysaufsSiNamePrefix "%lx", + sysaufs_si_id(sbinfo)); +} + +struct au_branch; +#ifdef CONFIG_SYSFS +/* sysfs.c */ +extern struct attribute_group *sysaufs_attr_group; + +int sysaufs_si_xi_path(struct seq_file *seq, struct super_block *sb); +ssize_t sysaufs_si_show(struct kobject *kobj, struct attribute *attr, + char *buf); +long au_brinfo_ioctl(struct file *file, unsigned long arg); +#ifdef CONFIG_COMPAT +long au_brinfo_compat_ioctl(struct file *file, unsigned long arg); +#endif + +void sysaufs_br_init(struct au_branch *br); +void sysaufs_brs_add(struct super_block *sb, aufs_bindex_t bindex); +void sysaufs_brs_del(struct super_block *sb, aufs_bindex_t bindex); + +#define sysaufs_brs_init() do {} while (0) + +#else +#define sysaufs_attr_group NULL + +AuStubInt0(sysaufs_si_xi_path, struct seq_file *seq, struct super_block *sb) +AuStub(ssize_t, sysaufs_si_show, return 0, struct kobject *kobj, + struct attribute *attr, char *buf) +AuStubVoid(sysaufs_br_init, struct au_branch *br) +AuStubVoid(sysaufs_brs_add, struct super_block *sb, aufs_bindex_t bindex) +AuStubVoid(sysaufs_brs_del, struct super_block *sb, aufs_bindex_t bindex) + +static inline void sysaufs_brs_init(void) +{ + sysaufs_brs = 0; +} + +#endif /* CONFIG_SYSFS */ + +#endif /* __KERNEL__ */ +#endif /* __SYSAUFS_H__ */ diff --git a/fs/aufs/sysfs.c b/fs/aufs/sysfs.c new file mode 100644 index 00000000000..89a4cbf66ce --- /dev/null +++ b/fs/aufs/sysfs.c @@ -0,0 +1,373 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * sysfs interface + */ + +#include +#include +#include "aufs.h" + +#ifdef CONFIG_AUFS_FS_MODULE +/* this entry violates the "one line per file" policy of sysfs */ +static ssize_t config_show(struct kobject *kobj, struct kobj_attribute *attr, + char *buf) +{ + ssize_t err; + static char *conf = +/* this file is generated at compiling */ +#include "conf.str" + ; + + err = snprintf(buf, PAGE_SIZE, conf); + if (unlikely(err >= PAGE_SIZE)) + err = -EFBIG; + return err; +} + +static struct kobj_attribute au_config_attr = __ATTR_RO(config); +#endif + +static struct attribute *au_attr[] = { +#ifdef CONFIG_AUFS_FS_MODULE + &au_config_attr.attr, +#endif + NULL, /* need to NULL terminate the list of attributes */ +}; + +static struct attribute_group sysaufs_attr_group_body = { + .attrs = au_attr +}; + +struct attribute_group *sysaufs_attr_group = &sysaufs_attr_group_body; + +/* ---------------------------------------------------------------------- */ + +int sysaufs_si_xi_path(struct seq_file *seq, struct super_block *sb) +{ + int err; + + SiMustAnyLock(sb); + + err = 0; + if (au_opt_test(au_mntflags(sb), XINO)) { + err = au_xino_path(seq, au_sbi(sb)->si_xib); + seq_putc(seq, '\n'); + } + return err; +} + +/* + * the lifetime of branch is independent from the entry under sysfs. + * sysfs handles the lifetime of the entry, and never call ->show() after it is + * unlinked. + */ +static int sysaufs_si_br(struct seq_file *seq, struct super_block *sb, + aufs_bindex_t bindex, int idx) +{ + int err; + struct path path; + struct dentry *root; + struct au_branch *br; + au_br_perm_str_t perm; + + AuDbg("b%d\n", bindex); + + err = 0; + root = sb->s_root; + di_read_lock_parent(root, !AuLock_IR); + br = au_sbr(sb, bindex); + + switch (idx) { + case AuBrSysfs_BR: + path.mnt = au_br_mnt(br); + path.dentry = au_h_dptr(root, bindex); + err = au_seq_path(seq, &path); + if (!err) { + au_optstr_br_perm(&perm, br->br_perm); + seq_printf(seq, "=%s\n", perm.a); + } + break; + case AuBrSysfs_BRID: + seq_printf(seq, "%d\n", br->br_id); + break; + } + di_read_unlock(root, !AuLock_IR); + if (unlikely(err || seq_has_overflowed(seq))) + err = -E2BIG; + + return err; +} + +/* ---------------------------------------------------------------------- */ + +static struct seq_file *au_seq(char *p, ssize_t len) +{ + struct seq_file *seq; + + seq = kzalloc(sizeof(*seq), GFP_NOFS); + if (seq) { + /* mutex_init(&seq.lock); */ + seq->buf = p; + seq->size = len; + return seq; /* success */ + } + + seq = ERR_PTR(-ENOMEM); + return seq; +} + +#define SysaufsBr_PREFIX "br" +#define SysaufsBrid_PREFIX "brid" + +/* todo: file size may exceed PAGE_SIZE */ +ssize_t sysaufs_si_show(struct kobject *kobj, struct attribute *attr, + char *buf) +{ + ssize_t err; + int idx; + long l; + aufs_bindex_t bbot; + struct au_sbinfo *sbinfo; + struct super_block *sb; + struct seq_file *seq; + char *name; + struct attribute **cattr; + + sbinfo = container_of(kobj, struct au_sbinfo, si_kobj); + sb = sbinfo->si_sb; + + /* + * prevent a race condition between sysfs and aufs. + * for instance, sysfs_file_read() calls sysfs_get_active_two() which + * prohibits maintaining the sysfs entries. + * hew we acquire read lock after sysfs_get_active_two(). + * on the other hand, the remount process may maintain the sysfs/aufs + * entries after acquiring write lock. + * it can cause a deadlock. + * simply we gave up processing read here. + */ + err = -EBUSY; + if (unlikely(!si_noflush_read_trylock(sb))) + goto out; + + seq = au_seq(buf, PAGE_SIZE); + err = PTR_ERR(seq); + if (IS_ERR(seq)) + goto out_unlock; + + name = (void *)attr->name; + cattr = sysaufs_si_attrs; + while (*cattr) { + if (!strcmp(name, (*cattr)->name)) { + err = container_of(*cattr, struct sysaufs_si_attr, attr) + ->show(seq, sb); + goto out_seq; + } + cattr++; + } + + if (!strncmp(name, SysaufsBrid_PREFIX, + sizeof(SysaufsBrid_PREFIX) - 1)) { + idx = AuBrSysfs_BRID; + name += sizeof(SysaufsBrid_PREFIX) - 1; + } else if (!strncmp(name, SysaufsBr_PREFIX, + sizeof(SysaufsBr_PREFIX) - 1)) { + idx = AuBrSysfs_BR; + name += sizeof(SysaufsBr_PREFIX) - 1; + } else + BUG(); + + err = kstrtol(name, 10, &l); + if (!err) { + bbot = au_sbbot(sb); + if (l <= bbot) + err = sysaufs_si_br(seq, sb, (aufs_bindex_t)l, idx); + else + err = -ENOENT; + } + +out_seq: + if (!err) { + err = seq->count; + /* sysfs limit */ + if (unlikely(err == PAGE_SIZE)) + err = -EFBIG; + } + kfree(seq); +out_unlock: + si_read_unlock(sb); +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int au_brinfo(struct super_block *sb, union aufs_brinfo __user *arg) +{ + int err; + int16_t brid; + aufs_bindex_t bindex, bbot; + size_t sz; + char *buf; + struct seq_file *seq; + struct au_branch *br; + + si_read_lock(sb, AuLock_FLUSH); + bbot = au_sbbot(sb); + err = bbot + 1; + if (!arg) + goto out; + + err = -ENOMEM; + buf = (void *)__get_free_page(GFP_NOFS); + if (unlikely(!buf)) + goto out; + + seq = au_seq(buf, PAGE_SIZE); + err = PTR_ERR(seq); + if (IS_ERR(seq)) + goto out_buf; + + sz = sizeof(*arg) - offsetof(union aufs_brinfo, path); + for (bindex = 0; bindex <= bbot; bindex++, arg++) { + err = !access_ok(VERIFY_WRITE, arg, sizeof(*arg)); + if (unlikely(err)) + break; + + br = au_sbr(sb, bindex); + brid = br->br_id; + BUILD_BUG_ON(sizeof(brid) != sizeof(arg->id)); + err = __put_user(brid, &arg->id); + if (unlikely(err)) + break; + + BUILD_BUG_ON(sizeof(br->br_perm) != sizeof(arg->perm)); + err = __put_user(br->br_perm, &arg->perm); + if (unlikely(err)) + break; + + err = au_seq_path(seq, &br->br_path); + if (unlikely(err)) + break; + seq_putc(seq, '\0'); + if (!seq_has_overflowed(seq)) { + err = copy_to_user(arg->path, seq->buf, seq->count); + seq->count = 0; + if (unlikely(err)) + break; + } else { + err = -E2BIG; + goto out_seq; + } + } + if (unlikely(err)) + err = -EFAULT; + +out_seq: + kfree(seq); +out_buf: + free_page((unsigned long)buf); +out: + si_read_unlock(sb); + return err; +} + +long au_brinfo_ioctl(struct file *file, unsigned long arg) +{ + return au_brinfo(file->f_path.dentry->d_sb, (void __user *)arg); +} + +#ifdef CONFIG_COMPAT +long au_brinfo_compat_ioctl(struct file *file, unsigned long arg) +{ + return au_brinfo(file->f_path.dentry->d_sb, compat_ptr(arg)); +} +#endif + +/* ---------------------------------------------------------------------- */ + +void sysaufs_br_init(struct au_branch *br) +{ + int i; + struct au_brsysfs *br_sysfs; + struct attribute *attr; + + br_sysfs = br->br_sysfs; + for (i = 0; i < ARRAY_SIZE(br->br_sysfs); i++) { + attr = &br_sysfs->attr; + sysfs_attr_init(attr); + attr->name = br_sysfs->name; + attr->mode = 0444; + br_sysfs++; + } +} + +void sysaufs_brs_del(struct super_block *sb, aufs_bindex_t bindex) +{ + struct au_branch *br; + struct kobject *kobj; + struct au_brsysfs *br_sysfs; + int i; + aufs_bindex_t bbot; + + if (!sysaufs_brs) + return; + + kobj = &au_sbi(sb)->si_kobj; + bbot = au_sbbot(sb); + for (; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + br_sysfs = br->br_sysfs; + for (i = 0; i < ARRAY_SIZE(br->br_sysfs); i++) { + sysfs_remove_file(kobj, &br_sysfs->attr); + br_sysfs++; + } + } +} + +void sysaufs_brs_add(struct super_block *sb, aufs_bindex_t bindex) +{ + int err, i; + aufs_bindex_t bbot; + struct kobject *kobj; + struct au_branch *br; + struct au_brsysfs *br_sysfs; + + if (!sysaufs_brs) + return; + + kobj = &au_sbi(sb)->si_kobj; + bbot = au_sbbot(sb); + for (; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + br_sysfs = br->br_sysfs; + snprintf(br_sysfs[AuBrSysfs_BR].name, sizeof(br_sysfs->name), + SysaufsBr_PREFIX "%d", bindex); + snprintf(br_sysfs[AuBrSysfs_BRID].name, sizeof(br_sysfs->name), + SysaufsBrid_PREFIX "%d", bindex); + for (i = 0; i < ARRAY_SIZE(br->br_sysfs); i++) { + err = sysfs_create_file(kobj, &br_sysfs->attr); + if (unlikely(err)) + pr_warn("failed %s under sysfs(%d)\n", + br_sysfs->name, err); + br_sysfs++; + } + } +} diff --git a/fs/aufs/sysrq.c b/fs/aufs/sysrq.c new file mode 100644 index 00000000000..b9daece7a6b --- /dev/null +++ b/fs/aufs/sysrq.c @@ -0,0 +1,160 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * magic sysrq hanlder + */ + +/* #include */ +#include +#include "aufs.h" + +/* ---------------------------------------------------------------------- */ + +static void sysrq_sb(struct super_block *sb) +{ + char *plevel; + struct au_sbinfo *sbinfo; + struct file *file; + struct hlist_bl_head *files; + struct hlist_bl_node *pos; + struct au_finfo *finfo; + + plevel = au_plevel; + au_plevel = KERN_WARNING; + + /* since we define pr_fmt, call printk directly */ +#define pr(str) printk(KERN_WARNING AUFS_NAME ": " str) + + sbinfo = au_sbi(sb); + printk(KERN_WARNING "si=%lx\n", sysaufs_si_id(sbinfo)); + pr("superblock\n"); + au_dpri_sb(sb); + +#if 0 + pr("root dentry\n"); + au_dpri_dentry(sb->s_root); + pr("root inode\n"); + au_dpri_inode(d_inode(sb->s_root)); +#endif + +#if 0 + do { + int err, i, j, ndentry; + struct au_dcsub_pages dpages; + struct au_dpage *dpage; + + err = au_dpages_init(&dpages, GFP_ATOMIC); + if (unlikely(err)) + break; + err = au_dcsub_pages(&dpages, sb->s_root, NULL, NULL); + if (!err) + for (i = 0; i < dpages.ndpage; i++) { + dpage = dpages.dpages + i; + ndentry = dpage->ndentry; + for (j = 0; j < ndentry; j++) + au_dpri_dentry(dpage->dentries[j]); + } + au_dpages_free(&dpages); + } while (0); +#endif + +#if 1 + { + struct inode *i; + + pr("isolated inode\n"); + spin_lock(&sb->s_inode_list_lock); + list_for_each_entry(i, &sb->s_inodes, i_sb_list) { + spin_lock(&i->i_lock); + if (1 || hlist_empty(&i->i_dentry)) + au_dpri_inode(i); + spin_unlock(&i->i_lock); + } + spin_unlock(&sb->s_inode_list_lock); + } +#endif + pr("files\n"); + files = &au_sbi(sb)->si_files; + hlist_bl_lock(files); + hlist_bl_for_each_entry(finfo, pos, files, fi_hlist) { + umode_t mode; + + file = finfo->fi_file; + mode = file_inode(file)->i_mode; + if (!special_file(mode)) + au_dpri_file(file); + } + hlist_bl_unlock(files); + pr("done\n"); + +#undef pr + au_plevel = plevel; +} + +/* ---------------------------------------------------------------------- */ + +/* module parameter */ +static char *aufs_sysrq_key = "a"; +module_param_named(sysrq, aufs_sysrq_key, charp, 0444); +MODULE_PARM_DESC(sysrq, "MagicSysRq key for " AUFS_NAME); + +static void au_sysrq(int key __maybe_unused) +{ + struct au_sbinfo *sbinfo; + struct hlist_bl_node *pos; + + lockdep_off(); + au_sbilist_lock(); + hlist_bl_for_each_entry(sbinfo, pos, &au_sbilist, si_list) + sysrq_sb(sbinfo->si_sb); + au_sbilist_unlock(); + lockdep_on(); +} + +static struct sysrq_key_op au_sysrq_op = { + .handler = au_sysrq, + .help_msg = "Aufs", + .action_msg = "Aufs", + .enable_mask = SYSRQ_ENABLE_DUMP +}; + +/* ---------------------------------------------------------------------- */ + +int __init au_sysrq_init(void) +{ + int err; + char key; + + err = -1; + key = *aufs_sysrq_key; + if ('a' <= key && key <= 'z') + err = register_sysrq_key(key, &au_sysrq_op); + if (unlikely(err)) + pr_err("err %d, sysrq=%c\n", err, key); + return err; +} + +void au_sysrq_fin(void) +{ + int err; + + err = unregister_sysrq_key(*aufs_sysrq_key, &au_sysrq_op); + if (unlikely(err)) + pr_err("err %d (ignored)\n", err); +} diff --git a/fs/aufs/vdir.c b/fs/aufs/vdir.c new file mode 100644 index 00000000000..5b78b5db7f5 --- /dev/null +++ b/fs/aufs/vdir.c @@ -0,0 +1,894 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * virtual or vertical directory + */ + +#include "aufs.h" + +static unsigned int calc_size(int nlen) +{ + return ALIGN(sizeof(struct au_vdir_de) + nlen, sizeof(ino_t)); +} + +static int set_deblk_end(union au_vdir_deblk_p *p, + union au_vdir_deblk_p *deblk_end) +{ + if (calc_size(0) <= deblk_end->deblk - p->deblk) { + p->de->de_str.len = 0; + /* smp_mb(); */ + return 0; + } + return -1; /* error */ +} + +/* returns true or false */ +static int is_deblk_end(union au_vdir_deblk_p *p, + union au_vdir_deblk_p *deblk_end) +{ + if (calc_size(0) <= deblk_end->deblk - p->deblk) + return !p->de->de_str.len; + return 1; +} + +static unsigned char *last_deblk(struct au_vdir *vdir) +{ + return vdir->vd_deblk[vdir->vd_nblk - 1]; +} + +/* ---------------------------------------------------------------------- */ + +/* estimate the appropriate size for name hash table */ +unsigned int au_rdhash_est(loff_t sz) +{ + unsigned int n; + + n = UINT_MAX; + sz >>= 10; + if (sz < n) + n = sz; + if (sz < AUFS_RDHASH_DEF) + n = AUFS_RDHASH_DEF; + /* pr_info("n %u\n", n); */ + return n; +} + +/* + * the allocated memory has to be freed by + * au_nhash_wh_free() or au_nhash_de_free(). + */ +int au_nhash_alloc(struct au_nhash *nhash, unsigned int num_hash, gfp_t gfp) +{ + struct hlist_head *head; + unsigned int u; + size_t sz; + + sz = sizeof(*nhash->nh_head) * num_hash; + head = kmalloc(sz, gfp); + if (head) { + nhash->nh_num = num_hash; + nhash->nh_head = head; + for (u = 0; u < num_hash; u++) + INIT_HLIST_HEAD(head++); + return 0; /* success */ + } + + return -ENOMEM; +} + +static void nhash_count(struct hlist_head *head) +{ +#if 0 + unsigned long n; + struct hlist_node *pos; + + n = 0; + hlist_for_each(pos, head) + n++; + pr_info("%lu\n", n); +#endif +} + +static void au_nhash_wh_do_free(struct hlist_head *head) +{ + struct au_vdir_wh *pos; + struct hlist_node *node; + + hlist_for_each_entry_safe(pos, node, head, wh_hash) + kfree(pos); +} + +static void au_nhash_de_do_free(struct hlist_head *head) +{ + struct au_vdir_dehstr *pos; + struct hlist_node *node; + + hlist_for_each_entry_safe(pos, node, head, hash) + au_cache_free_vdir_dehstr(pos); +} + +static void au_nhash_do_free(struct au_nhash *nhash, + void (*free)(struct hlist_head *head)) +{ + unsigned int n; + struct hlist_head *head; + + n = nhash->nh_num; + if (!n) + return; + + head = nhash->nh_head; + while (n-- > 0) { + nhash_count(head); + free(head++); + } + kfree(nhash->nh_head); +} + +void au_nhash_wh_free(struct au_nhash *whlist) +{ + au_nhash_do_free(whlist, au_nhash_wh_do_free); +} + +static void au_nhash_de_free(struct au_nhash *delist) +{ + au_nhash_do_free(delist, au_nhash_de_do_free); +} + +/* ---------------------------------------------------------------------- */ + +int au_nhash_test_longer_wh(struct au_nhash *whlist, aufs_bindex_t btgt, + int limit) +{ + int num; + unsigned int u, n; + struct hlist_head *head; + struct au_vdir_wh *pos; + + num = 0; + n = whlist->nh_num; + head = whlist->nh_head; + for (u = 0; u < n; u++, head++) + hlist_for_each_entry(pos, head, wh_hash) + if (pos->wh_bindex == btgt && ++num > limit) + return 1; + return 0; +} + +static struct hlist_head *au_name_hash(struct au_nhash *nhash, + unsigned char *name, + unsigned int len) +{ + unsigned int v; + /* const unsigned int magic_bit = 12; */ + + AuDebugOn(!nhash->nh_num || !nhash->nh_head); + + v = 0; + if (len > 8) + len = 8; + while (len--) + v += *name++; + /* v = hash_long(v, magic_bit); */ + v %= nhash->nh_num; + return nhash->nh_head + v; +} + +static int au_nhash_test_name(struct au_vdir_destr *str, const char *name, + int nlen) +{ + return str->len == nlen && !memcmp(str->name, name, nlen); +} + +/* returns found or not */ +int au_nhash_test_known_wh(struct au_nhash *whlist, char *name, int nlen) +{ + struct hlist_head *head; + struct au_vdir_wh *pos; + struct au_vdir_destr *str; + + head = au_name_hash(whlist, name, nlen); + hlist_for_each_entry(pos, head, wh_hash) { + str = &pos->wh_str; + AuDbg("%.*s\n", str->len, str->name); + if (au_nhash_test_name(str, name, nlen)) + return 1; + } + return 0; +} + +/* returns found(true) or not */ +static int test_known(struct au_nhash *delist, char *name, int nlen) +{ + struct hlist_head *head; + struct au_vdir_dehstr *pos; + struct au_vdir_destr *str; + + head = au_name_hash(delist, name, nlen); + hlist_for_each_entry(pos, head, hash) { + str = pos->str; + AuDbg("%.*s\n", str->len, str->name); + if (au_nhash_test_name(str, name, nlen)) + return 1; + } + return 0; +} + +static void au_shwh_init_wh(struct au_vdir_wh *wh, ino_t ino, + unsigned char d_type) +{ +#ifdef CONFIG_AUFS_SHWH + wh->wh_ino = ino; + wh->wh_type = d_type; +#endif +} + +/* ---------------------------------------------------------------------- */ + +int au_nhash_append_wh(struct au_nhash *whlist, char *name, int nlen, ino_t ino, + unsigned int d_type, aufs_bindex_t bindex, + unsigned char shwh) +{ + int err; + struct au_vdir_destr *str; + struct au_vdir_wh *wh; + + AuDbg("%.*s\n", nlen, name); + AuDebugOn(!whlist->nh_num || !whlist->nh_head); + + err = -ENOMEM; + wh = kmalloc(sizeof(*wh) + nlen, GFP_NOFS); + if (unlikely(!wh)) + goto out; + + err = 0; + wh->wh_bindex = bindex; + if (shwh) + au_shwh_init_wh(wh, ino, d_type); + str = &wh->wh_str; + str->len = nlen; + memcpy(str->name, name, nlen); + hlist_add_head(&wh->wh_hash, au_name_hash(whlist, name, nlen)); + /* smp_mb(); */ + +out: + return err; +} + +static int append_deblk(struct au_vdir *vdir) +{ + int err; + unsigned long ul; + const unsigned int deblk_sz = vdir->vd_deblk_sz; + union au_vdir_deblk_p p, deblk_end; + unsigned char **o; + + err = -ENOMEM; + o = au_krealloc(vdir->vd_deblk, sizeof(*o) * (vdir->vd_nblk + 1), + GFP_NOFS, /*may_shrink*/0); + if (unlikely(!o)) + goto out; + + vdir->vd_deblk = o; + p.deblk = kmalloc(deblk_sz, GFP_NOFS); + if (p.deblk) { + ul = vdir->vd_nblk++; + vdir->vd_deblk[ul] = p.deblk; + vdir->vd_last.ul = ul; + vdir->vd_last.p.deblk = p.deblk; + deblk_end.deblk = p.deblk + deblk_sz; + err = set_deblk_end(&p, &deblk_end); + } + +out: + return err; +} + +static int append_de(struct au_vdir *vdir, char *name, int nlen, ino_t ino, + unsigned int d_type, struct au_nhash *delist) +{ + int err; + unsigned int sz; + const unsigned int deblk_sz = vdir->vd_deblk_sz; + union au_vdir_deblk_p p, *room, deblk_end; + struct au_vdir_dehstr *dehstr; + + p.deblk = last_deblk(vdir); + deblk_end.deblk = p.deblk + deblk_sz; + room = &vdir->vd_last.p; + AuDebugOn(room->deblk < p.deblk || deblk_end.deblk <= room->deblk + || !is_deblk_end(room, &deblk_end)); + + sz = calc_size(nlen); + if (unlikely(sz > deblk_end.deblk - room->deblk)) { + err = append_deblk(vdir); + if (unlikely(err)) + goto out; + + p.deblk = last_deblk(vdir); + deblk_end.deblk = p.deblk + deblk_sz; + /* smp_mb(); */ + AuDebugOn(room->deblk != p.deblk); + } + + err = -ENOMEM; + dehstr = au_cache_alloc_vdir_dehstr(); + if (unlikely(!dehstr)) + goto out; + + dehstr->str = &room->de->de_str; + hlist_add_head(&dehstr->hash, au_name_hash(delist, name, nlen)); + room->de->de_ino = ino; + room->de->de_type = d_type; + room->de->de_str.len = nlen; + memcpy(room->de->de_str.name, name, nlen); + + err = 0; + room->deblk += sz; + if (unlikely(set_deblk_end(room, &deblk_end))) + err = append_deblk(vdir); + /* smp_mb(); */ + +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +void au_vdir_free(struct au_vdir *vdir) +{ + unsigned char **deblk; + + deblk = vdir->vd_deblk; + while (vdir->vd_nblk--) + kfree(*deblk++); + kfree(vdir->vd_deblk); + au_cache_free_vdir(vdir); +} + +static struct au_vdir *alloc_vdir(struct file *file) +{ + struct au_vdir *vdir; + struct super_block *sb; + int err; + + sb = file->f_path.dentry->d_sb; + SiMustAnyLock(sb); + + err = -ENOMEM; + vdir = au_cache_alloc_vdir(); + if (unlikely(!vdir)) + goto out; + + vdir->vd_deblk = kzalloc(sizeof(*vdir->vd_deblk), GFP_NOFS); + if (unlikely(!vdir->vd_deblk)) + goto out_free; + + vdir->vd_deblk_sz = au_sbi(sb)->si_rdblk; + if (!vdir->vd_deblk_sz) { + /* estimate the appropriate size for deblk */ + vdir->vd_deblk_sz = au_dir_size(file, /*dentry*/NULL); + /* pr_info("vd_deblk_sz %u\n", vdir->vd_deblk_sz); */ + } + vdir->vd_nblk = 0; + vdir->vd_version = 0; + vdir->vd_jiffy = 0; + err = append_deblk(vdir); + if (!err) + return vdir; /* success */ + + kfree(vdir->vd_deblk); + +out_free: + au_cache_free_vdir(vdir); +out: + vdir = ERR_PTR(err); + return vdir; +} + +static int reinit_vdir(struct au_vdir *vdir) +{ + int err; + union au_vdir_deblk_p p, deblk_end; + + while (vdir->vd_nblk > 1) { + kfree(vdir->vd_deblk[vdir->vd_nblk - 1]); + /* vdir->vd_deblk[vdir->vd_nblk - 1] = NULL; */ + vdir->vd_nblk--; + } + p.deblk = vdir->vd_deblk[0]; + deblk_end.deblk = p.deblk + vdir->vd_deblk_sz; + err = set_deblk_end(&p, &deblk_end); + /* keep vd_dblk_sz */ + vdir->vd_last.ul = 0; + vdir->vd_last.p.deblk = vdir->vd_deblk[0]; + vdir->vd_version = 0; + vdir->vd_jiffy = 0; + /* smp_mb(); */ + return err; +} + +/* ---------------------------------------------------------------------- */ + +#define AuFillVdir_CALLED 1 +#define AuFillVdir_WHABLE (1 << 1) +#define AuFillVdir_SHWH (1 << 2) +#define au_ftest_fillvdir(flags, name) ((flags) & AuFillVdir_##name) +#define au_fset_fillvdir(flags, name) \ + do { (flags) |= AuFillVdir_##name; } while (0) +#define au_fclr_fillvdir(flags, name) \ + do { (flags) &= ~AuFillVdir_##name; } while (0) + +#ifndef CONFIG_AUFS_SHWH +#undef AuFillVdir_SHWH +#define AuFillVdir_SHWH 0 +#endif + +struct fillvdir_arg { + struct dir_context ctx; + struct file *file; + struct au_vdir *vdir; + struct au_nhash delist; + struct au_nhash whlist; + aufs_bindex_t bindex; + unsigned int flags; + int err; +}; + +static int fillvdir(struct dir_context *ctx, const char *__name, int nlen, + loff_t offset __maybe_unused, u64 h_ino, + unsigned int d_type) +{ + struct fillvdir_arg *arg = container_of(ctx, struct fillvdir_arg, ctx); + char *name = (void *)__name; + struct super_block *sb; + ino_t ino; + const unsigned char shwh = !!au_ftest_fillvdir(arg->flags, SHWH); + + arg->err = 0; + sb = arg->file->f_path.dentry->d_sb; + au_fset_fillvdir(arg->flags, CALLED); + /* smp_mb(); */ + if (nlen <= AUFS_WH_PFX_LEN + || memcmp(name, AUFS_WH_PFX, AUFS_WH_PFX_LEN)) { + if (test_known(&arg->delist, name, nlen) + || au_nhash_test_known_wh(&arg->whlist, name, nlen)) + goto out; /* already exists or whiteouted */ + + arg->err = au_ino(sb, arg->bindex, h_ino, d_type, &ino); + if (!arg->err) { + if (unlikely(nlen > AUFS_MAX_NAMELEN)) + d_type = DT_UNKNOWN; + arg->err = append_de(arg->vdir, name, nlen, ino, + d_type, &arg->delist); + } + } else if (au_ftest_fillvdir(arg->flags, WHABLE)) { + name += AUFS_WH_PFX_LEN; + nlen -= AUFS_WH_PFX_LEN; + if (au_nhash_test_known_wh(&arg->whlist, name, nlen)) + goto out; /* already whiteouted */ + + if (shwh) + arg->err = au_wh_ino(sb, arg->bindex, h_ino, d_type, + &ino); + if (!arg->err) { + if (nlen <= AUFS_MAX_NAMELEN + AUFS_WH_PFX_LEN) + d_type = DT_UNKNOWN; + arg->err = au_nhash_append_wh + (&arg->whlist, name, nlen, ino, d_type, + arg->bindex, shwh); + } + } + +out: + if (!arg->err) + arg->vdir->vd_jiffy = jiffies; + /* smp_mb(); */ + AuTraceErr(arg->err); + return arg->err; +} + +static int au_handle_shwh(struct super_block *sb, struct au_vdir *vdir, + struct au_nhash *whlist, struct au_nhash *delist) +{ +#ifdef CONFIG_AUFS_SHWH + int err; + unsigned int nh, u; + struct hlist_head *head; + struct au_vdir_wh *pos; + struct hlist_node *n; + char *p, *o; + struct au_vdir_destr *destr; + + AuDebugOn(!au_opt_test(au_mntflags(sb), SHWH)); + + err = -ENOMEM; + o = p = (void *)__get_free_page(GFP_NOFS); + if (unlikely(!p)) + goto out; + + err = 0; + nh = whlist->nh_num; + memcpy(p, AUFS_WH_PFX, AUFS_WH_PFX_LEN); + p += AUFS_WH_PFX_LEN; + for (u = 0; u < nh; u++) { + head = whlist->nh_head + u; + hlist_for_each_entry_safe(pos, n, head, wh_hash) { + destr = &pos->wh_str; + memcpy(p, destr->name, destr->len); + err = append_de(vdir, o, destr->len + AUFS_WH_PFX_LEN, + pos->wh_ino, pos->wh_type, delist); + if (unlikely(err)) + break; + } + } + + free_page((unsigned long)o); + +out: + AuTraceErr(err); + return err; +#else + return 0; +#endif +} + +static int au_do_read_vdir(struct fillvdir_arg *arg) +{ + int err; + unsigned int rdhash; + loff_t offset; + aufs_bindex_t bbot, bindex, btop; + unsigned char shwh; + struct file *hf, *file; + struct super_block *sb; + + file = arg->file; + sb = file->f_path.dentry->d_sb; + SiMustAnyLock(sb); + + rdhash = au_sbi(sb)->si_rdhash; + if (!rdhash) + rdhash = au_rdhash_est(au_dir_size(file, /*dentry*/NULL)); + err = au_nhash_alloc(&arg->delist, rdhash, GFP_NOFS); + if (unlikely(err)) + goto out; + err = au_nhash_alloc(&arg->whlist, rdhash, GFP_NOFS); + if (unlikely(err)) + goto out_delist; + + err = 0; + arg->flags = 0; + shwh = 0; + if (au_opt_test(au_mntflags(sb), SHWH)) { + shwh = 1; + au_fset_fillvdir(arg->flags, SHWH); + } + btop = au_fbtop(file); + bbot = au_fbbot_dir(file); + for (bindex = btop; !err && bindex <= bbot; bindex++) { + hf = au_hf_dir(file, bindex); + if (!hf) + continue; + + offset = vfsub_llseek(hf, 0, SEEK_SET); + err = offset; + if (unlikely(offset)) + break; + + arg->bindex = bindex; + au_fclr_fillvdir(arg->flags, WHABLE); + if (shwh + || (bindex != bbot + && au_br_whable(au_sbr_perm(sb, bindex)))) + au_fset_fillvdir(arg->flags, WHABLE); + do { + arg->err = 0; + au_fclr_fillvdir(arg->flags, CALLED); + /* smp_mb(); */ + err = vfsub_iterate_dir(hf, &arg->ctx); + if (err >= 0) + err = arg->err; + } while (!err && au_ftest_fillvdir(arg->flags, CALLED)); + + /* + * dir_relax() may be good for concurrency, but aufs should not + * use it since it will cause a lockdep problem. + */ + } + + if (!err && shwh) + err = au_handle_shwh(sb, arg->vdir, &arg->whlist, &arg->delist); + + au_nhash_wh_free(&arg->whlist); + +out_delist: + au_nhash_de_free(&arg->delist); +out: + return err; +} + +static int read_vdir(struct file *file, int may_read) +{ + int err; + unsigned long expire; + unsigned char do_read; + struct fillvdir_arg arg = { + .ctx = { + .actor = fillvdir + } + }; + struct inode *inode; + struct au_vdir *vdir, *allocated; + + err = 0; + inode = file_inode(file); + IMustLock(inode); + IiMustWriteLock(inode); + SiMustAnyLock(inode->i_sb); + + allocated = NULL; + do_read = 0; + expire = au_sbi(inode->i_sb)->si_rdcache; + vdir = au_ivdir(inode); + if (!vdir) { + do_read = 1; + vdir = alloc_vdir(file); + err = PTR_ERR(vdir); + if (IS_ERR(vdir)) + goto out; + err = 0; + allocated = vdir; + } else if (may_read + && (!inode_eq_iversion(inode, vdir->vd_version) + || time_after(jiffies, vdir->vd_jiffy + expire))) { + do_read = 1; + err = reinit_vdir(vdir); + if (unlikely(err)) + goto out; + } + + if (!do_read) + return 0; /* success */ + + arg.file = file; + arg.vdir = vdir; + err = au_do_read_vdir(&arg); + if (!err) { + /* file->f_pos = 0; */ /* todo: ctx->pos? */ + vdir->vd_version = inode_query_iversion(inode); + vdir->vd_last.ul = 0; + vdir->vd_last.p.deblk = vdir->vd_deblk[0]; + if (allocated) + au_set_ivdir(inode, allocated); + } else if (allocated) + au_vdir_free(allocated); + +out: + return err; +} + +static int copy_vdir(struct au_vdir *tgt, struct au_vdir *src) +{ + int err, rerr; + unsigned long ul, n; + const unsigned int deblk_sz = src->vd_deblk_sz; + + AuDebugOn(tgt->vd_nblk != 1); + + err = -ENOMEM; + if (tgt->vd_nblk < src->vd_nblk) { + unsigned char **p; + + p = au_krealloc(tgt->vd_deblk, sizeof(*p) * src->vd_nblk, + GFP_NOFS, /*may_shrink*/0); + if (unlikely(!p)) + goto out; + tgt->vd_deblk = p; + } + + if (tgt->vd_deblk_sz != deblk_sz) { + unsigned char *p; + + tgt->vd_deblk_sz = deblk_sz; + p = au_krealloc(tgt->vd_deblk[0], deblk_sz, GFP_NOFS, + /*may_shrink*/1); + if (unlikely(!p)) + goto out; + tgt->vd_deblk[0] = p; + } + memcpy(tgt->vd_deblk[0], src->vd_deblk[0], deblk_sz); + tgt->vd_version = src->vd_version; + tgt->vd_jiffy = src->vd_jiffy; + + n = src->vd_nblk; + for (ul = 1; ul < n; ul++) { + tgt->vd_deblk[ul] = kmemdup(src->vd_deblk[ul], deblk_sz, + GFP_NOFS); + if (unlikely(!tgt->vd_deblk[ul])) + goto out; + tgt->vd_nblk++; + } + tgt->vd_nblk = n; + tgt->vd_last.ul = tgt->vd_last.ul; + tgt->vd_last.p.deblk = tgt->vd_deblk[tgt->vd_last.ul]; + tgt->vd_last.p.deblk += src->vd_last.p.deblk + - src->vd_deblk[src->vd_last.ul]; + /* smp_mb(); */ + return 0; /* success */ + +out: + rerr = reinit_vdir(tgt); + BUG_ON(rerr); + return err; +} + +int au_vdir_init(struct file *file) +{ + int err; + struct inode *inode; + struct au_vdir *vdir_cache, *allocated; + + /* test file->f_pos here instead of ctx->pos */ + err = read_vdir(file, !file->f_pos); + if (unlikely(err)) + goto out; + + allocated = NULL; + vdir_cache = au_fvdir_cache(file); + if (!vdir_cache) { + vdir_cache = alloc_vdir(file); + err = PTR_ERR(vdir_cache); + if (IS_ERR(vdir_cache)) + goto out; + allocated = vdir_cache; + } else if (!file->f_pos && vdir_cache->vd_version != file->f_version) { + /* test file->f_pos here instead of ctx->pos */ + err = reinit_vdir(vdir_cache); + if (unlikely(err)) + goto out; + } else + return 0; /* success */ + + inode = file_inode(file); + err = copy_vdir(vdir_cache, au_ivdir(inode)); + if (!err) { + file->f_version = inode_query_iversion(inode); + if (allocated) + au_set_fvdir_cache(file, allocated); + } else if (allocated) + au_vdir_free(allocated); + +out: + return err; +} + +static loff_t calc_offset(struct au_vdir *vdir) +{ + loff_t offset; + union au_vdir_deblk_p p; + + p.deblk = vdir->vd_deblk[vdir->vd_last.ul]; + offset = vdir->vd_last.p.deblk - p.deblk; + offset += vdir->vd_deblk_sz * vdir->vd_last.ul; + return offset; +} + +/* returns true or false */ +static int seek_vdir(struct file *file, struct dir_context *ctx) +{ + int valid; + unsigned int deblk_sz; + unsigned long ul, n; + loff_t offset; + union au_vdir_deblk_p p, deblk_end; + struct au_vdir *vdir_cache; + + valid = 1; + vdir_cache = au_fvdir_cache(file); + offset = calc_offset(vdir_cache); + AuDbg("offset %lld\n", offset); + if (ctx->pos == offset) + goto out; + + vdir_cache->vd_last.ul = 0; + vdir_cache->vd_last.p.deblk = vdir_cache->vd_deblk[0]; + if (!ctx->pos) + goto out; + + valid = 0; + deblk_sz = vdir_cache->vd_deblk_sz; + ul = div64_u64(ctx->pos, deblk_sz); + AuDbg("ul %lu\n", ul); + if (ul >= vdir_cache->vd_nblk) + goto out; + + n = vdir_cache->vd_nblk; + for (; ul < n; ul++) { + p.deblk = vdir_cache->vd_deblk[ul]; + deblk_end.deblk = p.deblk + deblk_sz; + offset = ul; + offset *= deblk_sz; + while (!is_deblk_end(&p, &deblk_end) && offset < ctx->pos) { + unsigned int l; + + l = calc_size(p.de->de_str.len); + offset += l; + p.deblk += l; + } + if (!is_deblk_end(&p, &deblk_end)) { + valid = 1; + vdir_cache->vd_last.ul = ul; + vdir_cache->vd_last.p = p; + break; + } + } + +out: + /* smp_mb(); */ + if (!valid) + AuDbg("valid %d\n", !valid); + return valid; +} + +int au_vdir_fill_de(struct file *file, struct dir_context *ctx) +{ + unsigned int l, deblk_sz; + union au_vdir_deblk_p deblk_end; + struct au_vdir *vdir_cache; + struct au_vdir_de *de; + + vdir_cache = au_fvdir_cache(file); + if (!seek_vdir(file, ctx)) + return 0; + + deblk_sz = vdir_cache->vd_deblk_sz; + while (1) { + deblk_end.deblk = vdir_cache->vd_deblk[vdir_cache->vd_last.ul]; + deblk_end.deblk += deblk_sz; + while (!is_deblk_end(&vdir_cache->vd_last.p, &deblk_end)) { + de = vdir_cache->vd_last.p.de; + AuDbg("%.*s, off%lld, i%lu, dt%d\n", + de->de_str.len, de->de_str.name, ctx->pos, + (unsigned long)de->de_ino, de->de_type); + if (unlikely(!dir_emit(ctx, de->de_str.name, + de->de_str.len, de->de_ino, + de->de_type))) { + /* todo: ignore the error caused by udba? */ + /* return err; */ + return 0; + } + + l = calc_size(de->de_str.len); + vdir_cache->vd_last.p.deblk += l; + ctx->pos += l; + } + if (vdir_cache->vd_last.ul < vdir_cache->vd_nblk - 1) { + vdir_cache->vd_last.ul++; + vdir_cache->vd_last.p.deblk + = vdir_cache->vd_deblk[vdir_cache->vd_last.ul]; + ctx->pos = deblk_sz * vdir_cache->vd_last.ul; + continue; + } + break; + } + + /* smp_mb(); */ + return 0; +} diff --git a/fs/aufs/vfsub.c b/fs/aufs/vfsub.c new file mode 100644 index 00000000000..00f7a3cc017 --- /dev/null +++ b/fs/aufs/vfsub.c @@ -0,0 +1,895 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * sub-routines for VFS + */ + +#include +#include +#include +#include +#include +#include "aufs.h" + +#ifdef CONFIG_AUFS_BR_FUSE +int vfsub_test_mntns(struct vfsmount *mnt, struct super_block *h_sb) +{ + if (!au_test_fuse(h_sb) || !au_userns) + return 0; + + return is_current_mnt_ns(mnt) ? 0 : -EACCES; +} +#endif + +int vfsub_sync_filesystem(struct super_block *h_sb, int wait) +{ + int err; + + lockdep_off(); + down_read(&h_sb->s_umount); + err = __sync_filesystem(h_sb, wait); + up_read(&h_sb->s_umount); + lockdep_on(); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +int vfsub_update_h_iattr(struct path *h_path, int *did) +{ + int err; + struct kstat st; + struct super_block *h_sb; + + /* for remote fs, leave work for its getattr or d_revalidate */ + /* for bad i_attr fs, handle them in aufs_getattr() */ + /* still some fs may acquire i_mutex. we need to skip them */ + err = 0; + if (!did) + did = &err; + h_sb = h_path->dentry->d_sb; + *did = (!au_test_fs_remote(h_sb) && au_test_fs_refresh_iattr(h_sb)); + if (*did) + err = vfsub_getattr(h_path, &st); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +struct file *vfsub_dentry_open(struct path *path, int flags) +{ + struct file *file; + + file = dentry_open(path, flags /* | __FMODE_NONOTIFY */, + current_cred()); + if (!IS_ERR_OR_NULL(file) + && (file->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ) + i_readcount_inc(d_inode(path->dentry)); + + return file; +} + +struct file *vfsub_filp_open(const char *path, int oflags, int mode) +{ + struct file *file; + + lockdep_off(); + file = filp_open(path, + oflags /* | __FMODE_NONOTIFY */, + mode); + lockdep_on(); + if (IS_ERR(file)) + goto out; + vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/ + +out: + return file; +} + +/* + * Ideally this function should call VFS:do_last() in order to keep all its + * checkings. But it is very hard for aufs to regenerate several VFS internal + * structure such as nameidata. This is a second (or third) best approach. + * cf. linux/fs/namei.c:do_last(), lookup_open() and atomic_open(). + */ +int vfsub_atomic_open(struct inode *dir, struct dentry *dentry, + struct vfsub_aopen_args *args, struct au_branch *br) +{ + int err; + struct file *file = args->file; + /* copied from linux/fs/namei.c:atomic_open() */ + struct dentry *const DENTRY_NOT_SET = (void *)-1UL; + + IMustLock(dir); + AuDebugOn(!dir->i_op->atomic_open); + + err = au_br_test_oflag(args->open_flag, br); + if (unlikely(err)) + goto out; + + args->file->f_path.dentry = DENTRY_NOT_SET; + args->file->f_path.mnt = au_br_mnt(br); + err = dir->i_op->atomic_open(dir, dentry, file, args->open_flag, + args->create_mode, args->opened); + if (err >= 0) { + /* some filesystems don't set FILE_CREATED while succeeded? */ + if (*args->opened & FILE_CREATED) + fsnotify_create(dir, dentry); + } else + goto out; + + + if (!err) { + /* todo: call VFS:may_open() here */ + err = open_check_o_direct(file); + /* todo: ima_file_check() too? */ + if (!err && (args->open_flag & __FMODE_EXEC)) + err = deny_write_access(file); + if (unlikely(err)) + /* note that the file is created and still opened */ + goto out; + } + + au_br_get(br); + fsnotify_open(file); + +out: + return err; +} + +int vfsub_kern_path(const char *name, unsigned int flags, struct path *path) +{ + int err; + + err = kern_path(name, flags, path); + if (!err && d_is_positive(path->dentry)) + vfsub_update_h_iattr(path, /*did*/NULL); /*ignore*/ + return err; +} + +struct dentry *vfsub_lookup_one_len_unlocked(const char *name, + struct dentry *parent, int len) +{ + struct path path = { + .mnt = NULL + }; + + path.dentry = lookup_one_len_unlocked(name, parent, len); + if (IS_ERR(path.dentry)) + goto out; + if (d_is_positive(path.dentry)) + vfsub_update_h_iattr(&path, /*did*/NULL); /*ignore*/ + +out: + AuTraceErrPtr(path.dentry); + return path.dentry; +} + +struct dentry *vfsub_lookup_one_len(const char *name, struct dentry *parent, + int len) +{ + struct path path = { + .mnt = NULL + }; + + /* VFS checks it too, but by WARN_ON_ONCE() */ + IMustLock(d_inode(parent)); + + path.dentry = lookup_one_len(name, parent, len); + if (IS_ERR(path.dentry)) + goto out; + if (d_is_positive(path.dentry)) + vfsub_update_h_iattr(&path, /*did*/NULL); /*ignore*/ + +out: + AuTraceErrPtr(path.dentry); + return path.dentry; +} + +void vfsub_call_lkup_one(void *args) +{ + struct vfsub_lkup_one_args *a = args; + *a->errp = vfsub_lkup_one(a->name, a->parent); +} + +/* ---------------------------------------------------------------------- */ + +struct dentry *vfsub_lock_rename(struct dentry *d1, struct au_hinode *hdir1, + struct dentry *d2, struct au_hinode *hdir2) +{ + struct dentry *d; + + lockdep_off(); + d = lock_rename(d1, d2); + lockdep_on(); + au_hn_suspend(hdir1); + if (hdir1 != hdir2) + au_hn_suspend(hdir2); + + return d; +} + +void vfsub_unlock_rename(struct dentry *d1, struct au_hinode *hdir1, + struct dentry *d2, struct au_hinode *hdir2) +{ + au_hn_resume(hdir1); + if (hdir1 != hdir2) + au_hn_resume(hdir2); + lockdep_off(); + unlock_rename(d1, d2); + lockdep_on(); +} + +/* ---------------------------------------------------------------------- */ + +int vfsub_create(struct inode *dir, struct path *path, int mode, bool want_excl) +{ + int err; + struct dentry *d; + + IMustLock(dir); + + d = path->dentry; + path->dentry = d->d_parent; + err = security_path_mknod(path, d, mode, 0); + path->dentry = d; + if (unlikely(err)) + goto out; + + lockdep_off(); + err = vfs_create(dir, path->dentry, mode, want_excl); + lockdep_on(); + if (!err) { + struct path tmp = *path; + int did; + + vfsub_update_h_iattr(&tmp, &did); + if (did) { + tmp.dentry = path->dentry->d_parent; + vfsub_update_h_iattr(&tmp, /*did*/NULL); + } + /*ignore*/ + } + +out: + return err; +} + +int vfsub_symlink(struct inode *dir, struct path *path, const char *symname) +{ + int err; + struct dentry *d; + + IMustLock(dir); + + d = path->dentry; + path->dentry = d->d_parent; + err = security_path_symlink(path, d, symname); + path->dentry = d; + if (unlikely(err)) + goto out; + + lockdep_off(); + err = vfs_symlink(dir, path->dentry, symname); + lockdep_on(); + if (!err) { + struct path tmp = *path; + int did; + + vfsub_update_h_iattr(&tmp, &did); + if (did) { + tmp.dentry = path->dentry->d_parent; + vfsub_update_h_iattr(&tmp, /*did*/NULL); + } + /*ignore*/ + } + +out: + return err; +} + +int vfsub_mknod(struct inode *dir, struct path *path, int mode, dev_t dev) +{ + int err; + struct dentry *d; + + IMustLock(dir); + + d = path->dentry; + path->dentry = d->d_parent; + err = security_path_mknod(path, d, mode, new_encode_dev(dev)); + path->dentry = d; + if (unlikely(err)) + goto out; + + lockdep_off(); + err = vfs_mknod(dir, path->dentry, mode, dev); + lockdep_on(); + if (!err) { + struct path tmp = *path; + int did; + + vfsub_update_h_iattr(&tmp, &did); + if (did) { + tmp.dentry = path->dentry->d_parent; + vfsub_update_h_iattr(&tmp, /*did*/NULL); + } + /*ignore*/ + } + +out: + return err; +} + +static int au_test_nlink(struct inode *inode) +{ + const unsigned int link_max = UINT_MAX >> 1; /* rough margin */ + + if (!au_test_fs_no_limit_nlink(inode->i_sb) + || inode->i_nlink < link_max) + return 0; + return -EMLINK; +} + +int vfsub_link(struct dentry *src_dentry, struct inode *dir, struct path *path, + struct inode **delegated_inode) +{ + int err; + struct dentry *d; + + IMustLock(dir); + + err = au_test_nlink(d_inode(src_dentry)); + if (unlikely(err)) + return err; + + /* we don't call may_linkat() */ + d = path->dentry; + path->dentry = d->d_parent; + err = security_path_link(src_dentry, path, d); + path->dentry = d; + if (unlikely(err)) + goto out; + + lockdep_off(); + err = vfs_link(src_dentry, dir, path->dentry, delegated_inode); + lockdep_on(); + if (!err) { + struct path tmp = *path; + int did; + + /* fuse has different memory inode for the same inumber */ + vfsub_update_h_iattr(&tmp, &did); + if (did) { + tmp.dentry = path->dentry->d_parent; + vfsub_update_h_iattr(&tmp, /*did*/NULL); + tmp.dentry = src_dentry; + vfsub_update_h_iattr(&tmp, /*did*/NULL); + } + /*ignore*/ + } + +out: + return err; +} + +int vfsub_rename(struct inode *src_dir, struct dentry *src_dentry, + struct inode *dir, struct path *path, + struct inode **delegated_inode, unsigned int flags) +{ + int err; + struct path tmp = { + .mnt = path->mnt + }; + struct dentry *d; + + IMustLock(dir); + IMustLock(src_dir); + + d = path->dentry; + path->dentry = d->d_parent; + tmp.dentry = src_dentry->d_parent; + err = security_path_rename(&tmp, src_dentry, path, d, /*flags*/0); + path->dentry = d; + if (unlikely(err)) + goto out; + + lockdep_off(); + err = vfs_rename(src_dir, src_dentry, dir, path->dentry, + delegated_inode, flags); + lockdep_on(); + if (!err) { + int did; + + tmp.dentry = d->d_parent; + vfsub_update_h_iattr(&tmp, &did); + if (did) { + tmp.dentry = src_dentry; + vfsub_update_h_iattr(&tmp, /*did*/NULL); + tmp.dentry = src_dentry->d_parent; + vfsub_update_h_iattr(&tmp, /*did*/NULL); + } + /*ignore*/ + } + +out: + return err; +} + +int vfsub_mkdir(struct inode *dir, struct path *path, int mode) +{ + int err; + struct dentry *d; + + IMustLock(dir); + + d = path->dentry; + path->dentry = d->d_parent; + err = security_path_mkdir(path, d, mode); + path->dentry = d; + if (unlikely(err)) + goto out; + + lockdep_off(); + err = vfs_mkdir(dir, path->dentry, mode); + lockdep_on(); + if (!err) { + struct path tmp = *path; + int did; + + vfsub_update_h_iattr(&tmp, &did); + if (did) { + tmp.dentry = path->dentry->d_parent; + vfsub_update_h_iattr(&tmp, /*did*/NULL); + } + /*ignore*/ + } + +out: + return err; +} + +int vfsub_rmdir(struct inode *dir, struct path *path) +{ + int err; + struct dentry *d; + + IMustLock(dir); + + d = path->dentry; + path->dentry = d->d_parent; + err = security_path_rmdir(path, d); + path->dentry = d; + if (unlikely(err)) + goto out; + + lockdep_off(); + err = vfs_rmdir(dir, path->dentry); + lockdep_on(); + if (!err) { + struct path tmp = { + .dentry = path->dentry->d_parent, + .mnt = path->mnt + }; + + vfsub_update_h_iattr(&tmp, /*did*/NULL); /*ignore*/ + } + +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* todo: support mmap_sem? */ +ssize_t vfsub_read_u(struct file *file, char __user *ubuf, size_t count, + loff_t *ppos) +{ + ssize_t err; + + lockdep_off(); + err = vfs_read(file, ubuf, count, ppos); + lockdep_on(); + if (err >= 0) + vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/ + return err; +} + +/* todo: kernel_read()? */ +ssize_t vfsub_read_k(struct file *file, void *kbuf, size_t count, + loff_t *ppos) +{ + ssize_t err; + mm_segment_t oldfs; + union { + void *k; + char __user *u; + } buf; + + buf.k = kbuf; + oldfs = get_fs(); + set_fs(KERNEL_DS); + err = vfsub_read_u(file, buf.u, count, ppos); + set_fs(oldfs); + return err; +} + +ssize_t vfsub_write_u(struct file *file, const char __user *ubuf, size_t count, + loff_t *ppos) +{ + ssize_t err; + + lockdep_off(); + err = vfs_write(file, ubuf, count, ppos); + lockdep_on(); + if (err >= 0) + vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/ + return err; +} + +ssize_t vfsub_write_k(struct file *file, void *kbuf, size_t count, loff_t *ppos) +{ + ssize_t err; + mm_segment_t oldfs; + union { + void *k; + const char __user *u; + } buf; + + buf.k = kbuf; + oldfs = get_fs(); + set_fs(KERNEL_DS); + err = vfsub_write_u(file, buf.u, count, ppos); + set_fs(oldfs); + return err; +} + +int vfsub_flush(struct file *file, fl_owner_t id) +{ + int err; + + err = 0; + if (file->f_op->flush) { + if (!au_test_nfs(file->f_path.dentry->d_sb)) + err = file->f_op->flush(file, id); + else { + lockdep_off(); + err = file->f_op->flush(file, id); + lockdep_on(); + } + if (!err) + vfsub_update_h_iattr(&file->f_path, /*did*/NULL); + /*ignore*/ + } + return err; +} + +int vfsub_iterate_dir(struct file *file, struct dir_context *ctx) +{ + int err; + + AuDbg("%pD, ctx{%ps, %llu}\n", file, ctx->actor, ctx->pos); + + lockdep_off(); + err = iterate_dir(file, ctx); + lockdep_on(); + if (err >= 0) + vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/ + + return err; +} + +long vfsub_splice_to(struct file *in, loff_t *ppos, + struct pipe_inode_info *pipe, size_t len, + unsigned int flags) +{ + long err; + + lockdep_off(); + err = do_splice_to(in, ppos, pipe, len, flags); + lockdep_on(); + file_accessed(in); + if (err >= 0) + vfsub_update_h_iattr(&in->f_path, /*did*/NULL); /*ignore*/ + return err; +} + +long vfsub_splice_from(struct pipe_inode_info *pipe, struct file *out, + loff_t *ppos, size_t len, unsigned int flags) +{ + long err; + + lockdep_off(); + err = do_splice_from(pipe, out, ppos, len, flags); + lockdep_on(); + if (err >= 0) + vfsub_update_h_iattr(&out->f_path, /*did*/NULL); /*ignore*/ + return err; +} + +int vfsub_fsync(struct file *file, struct path *path, int datasync) +{ + int err; + + /* file can be NULL */ + lockdep_off(); + err = vfs_fsync(file, datasync); + lockdep_on(); + if (!err) { + if (!path) { + AuDebugOn(!file); + path = &file->f_path; + } + vfsub_update_h_iattr(path, /*did*/NULL); /*ignore*/ + } + return err; +} + +/* cf. open.c:do_sys_truncate() and do_sys_ftruncate() */ +int vfsub_trunc(struct path *h_path, loff_t length, unsigned int attr, + struct file *h_file) +{ + int err; + struct inode *h_inode; + struct super_block *h_sb; + + if (!h_file) { + err = vfsub_truncate(h_path, length); + goto out; + } + + h_inode = d_inode(h_path->dentry); + h_sb = h_inode->i_sb; + lockdep_off(); + sb_start_write(h_sb); + lockdep_on(); + err = locks_verify_truncate(h_inode, h_file, length); + if (!err) + err = security_path_truncate(h_path); + if (!err) { + lockdep_off(); + err = do_truncate(h_path->dentry, length, attr, h_file); + lockdep_on(); + } + lockdep_off(); + sb_end_write(h_sb); + lockdep_on(); + +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +struct au_vfsub_mkdir_args { + int *errp; + struct inode *dir; + struct path *path; + int mode; +}; + +static void au_call_vfsub_mkdir(void *args) +{ + struct au_vfsub_mkdir_args *a = args; + *a->errp = vfsub_mkdir(a->dir, a->path, a->mode); +} + +int vfsub_sio_mkdir(struct inode *dir, struct path *path, int mode) +{ + int err, do_sio, wkq_err; + + do_sio = au_test_h_perm_sio(dir, MAY_EXEC | MAY_WRITE); + if (!do_sio) { + lockdep_off(); + err = vfsub_mkdir(dir, path, mode); + lockdep_on(); + } else { + struct au_vfsub_mkdir_args args = { + .errp = &err, + .dir = dir, + .path = path, + .mode = mode + }; + wkq_err = au_wkq_wait(au_call_vfsub_mkdir, &args); + if (unlikely(wkq_err)) + err = wkq_err; + } + + return err; +} + +struct au_vfsub_rmdir_args { + int *errp; + struct inode *dir; + struct path *path; +}; + +static void au_call_vfsub_rmdir(void *args) +{ + struct au_vfsub_rmdir_args *a = args; + *a->errp = vfsub_rmdir(a->dir, a->path); +} + +int vfsub_sio_rmdir(struct inode *dir, struct path *path) +{ + int err, do_sio, wkq_err; + + do_sio = au_test_h_perm_sio(dir, MAY_EXEC | MAY_WRITE); + if (!do_sio) { + lockdep_off(); + err = vfsub_rmdir(dir, path); + lockdep_on(); + } else { + struct au_vfsub_rmdir_args args = { + .errp = &err, + .dir = dir, + .path = path + }; + wkq_err = au_wkq_wait(au_call_vfsub_rmdir, &args); + if (unlikely(wkq_err)) + err = wkq_err; + } + + return err; +} + +/* ---------------------------------------------------------------------- */ + +struct notify_change_args { + int *errp; + struct path *path; + struct iattr *ia; + struct inode **delegated_inode; +}; + +static void call_notify_change(void *args) +{ + struct notify_change_args *a = args; + struct inode *h_inode; + + h_inode = d_inode(a->path->dentry); + IMustLock(h_inode); + + *a->errp = -EPERM; + if (!IS_IMMUTABLE(h_inode) && !IS_APPEND(h_inode)) { + lockdep_off(); + *a->errp = notify_change(a->path->dentry, a->ia, + a->delegated_inode); + lockdep_on(); + if (!*a->errp) + vfsub_update_h_iattr(a->path, /*did*/NULL); /*ignore*/ + } + AuTraceErr(*a->errp); +} + +int vfsub_notify_change(struct path *path, struct iattr *ia, + struct inode **delegated_inode) +{ + int err; + struct notify_change_args args = { + .errp = &err, + .path = path, + .ia = ia, + .delegated_inode = delegated_inode + }; + + call_notify_change(&args); + + return err; +} + +int vfsub_sio_notify_change(struct path *path, struct iattr *ia, + struct inode **delegated_inode) +{ + int err, wkq_err; + struct notify_change_args args = { + .errp = &err, + .path = path, + .ia = ia, + .delegated_inode = delegated_inode + }; + + wkq_err = au_wkq_wait(call_notify_change, &args); + if (unlikely(wkq_err)) + err = wkq_err; + + return err; +} + +/* ---------------------------------------------------------------------- */ + +struct unlink_args { + int *errp; + struct inode *dir; + struct path *path; + struct inode **delegated_inode; +}; + +static void call_unlink(void *args) +{ + struct unlink_args *a = args; + struct dentry *d = a->path->dentry; + struct inode *h_inode; + const int stop_sillyrename = (au_test_nfs(d->d_sb) + && au_dcount(d) == 1); + + IMustLock(a->dir); + + a->path->dentry = d->d_parent; + *a->errp = security_path_unlink(a->path, d); + a->path->dentry = d; + if (unlikely(*a->errp)) + return; + + if (!stop_sillyrename) + dget(d); + h_inode = NULL; + if (d_is_positive(d)) { + h_inode = d_inode(d); + ihold(h_inode); + } + + lockdep_off(); + *a->errp = vfs_unlink(a->dir, d, a->delegated_inode); + lockdep_on(); + if (!*a->errp) { + struct path tmp = { + .dentry = d->d_parent, + .mnt = a->path->mnt + }; + vfsub_update_h_iattr(&tmp, /*did*/NULL); /*ignore*/ + } + + if (!stop_sillyrename) + dput(d); + if (h_inode) + iput(h_inode); + + AuTraceErr(*a->errp); +} + +/* + * @dir: must be locked. + * @dentry: target dentry. + */ +int vfsub_unlink(struct inode *dir, struct path *path, + struct inode **delegated_inode, int force) +{ + int err; + struct unlink_args args = { + .errp = &err, + .dir = dir, + .path = path, + .delegated_inode = delegated_inode + }; + + if (!force) + call_unlink(&args); + else { + int wkq_err; + + wkq_err = au_wkq_wait(call_unlink, &args); + if (unlikely(wkq_err)) + err = wkq_err; + } + + return err; +} diff --git a/fs/aufs/vfsub.h b/fs/aufs/vfsub.h new file mode 100644 index 00000000000..18e4d853810 --- /dev/null +++ b/fs/aufs/vfsub.h @@ -0,0 +1,355 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * sub-routines for VFS + */ + +#ifndef __AUFS_VFSUB_H__ +#define __AUFS_VFSUB_H__ + +#ifdef __KERNEL__ + +#include +#include +#include +#include +#include +#include "debug.h" + +/* copied from linux/fs/internal.h */ +/* todo: BAD approach!! */ +extern void __mnt_drop_write(struct vfsmount *); +extern int open_check_o_direct(struct file *f); + +/* ---------------------------------------------------------------------- */ + +/* lock subclass for lower inode */ +/* default MAX_LOCKDEP_SUBCLASSES(8) is not enough */ +/* reduce? gave up. */ +enum { + AuLsc_I_Begin = I_MUTEX_PARENT2, /* 5 */ + AuLsc_I_PARENT, /* lower inode, parent first */ + AuLsc_I_PARENT2, /* copyup dirs */ + AuLsc_I_PARENT3, /* copyup wh */ + AuLsc_I_CHILD, + AuLsc_I_CHILD2, + AuLsc_I_End +}; + +/* to debug easier, do not make them inlined functions */ +#define MtxMustLock(mtx) AuDebugOn(!mutex_is_locked(mtx)) +#define IMustLock(i) AuDebugOn(!inode_is_locked(i)) + +/* ---------------------------------------------------------------------- */ + +static inline void vfsub_drop_nlink(struct inode *inode) +{ + AuDebugOn(!inode->i_nlink); + drop_nlink(inode); +} + +static inline void vfsub_dead_dir(struct inode *inode) +{ + AuDebugOn(!S_ISDIR(inode->i_mode)); + inode->i_flags |= S_DEAD; + clear_nlink(inode); +} + +static inline int vfsub_native_ro(struct inode *inode) +{ + return sb_rdonly(inode->i_sb) + || IS_RDONLY(inode) + /* || IS_APPEND(inode) */ + || IS_IMMUTABLE(inode); +} + +#ifdef CONFIG_AUFS_BR_FUSE +int vfsub_test_mntns(struct vfsmount *mnt, struct super_block *h_sb); +#else +AuStubInt0(vfsub_test_mntns, struct vfsmount *mnt, struct super_block *h_sb); +#endif + +int vfsub_sync_filesystem(struct super_block *h_sb, int wait); + +/* ---------------------------------------------------------------------- */ + +int vfsub_update_h_iattr(struct path *h_path, int *did); +struct file *vfsub_dentry_open(struct path *path, int flags); +struct file *vfsub_filp_open(const char *path, int oflags, int mode); +struct vfsub_aopen_args { + struct file *file; + unsigned int open_flag; + umode_t create_mode; + int *opened; +}; +struct au_branch; +int vfsub_atomic_open(struct inode *dir, struct dentry *dentry, + struct vfsub_aopen_args *args, struct au_branch *br); +int vfsub_kern_path(const char *name, unsigned int flags, struct path *path); + +struct dentry *vfsub_lookup_one_len_unlocked(const char *name, + struct dentry *parent, int len); +struct dentry *vfsub_lookup_one_len(const char *name, struct dentry *parent, + int len); + +struct vfsub_lkup_one_args { + struct dentry **errp; + struct qstr *name; + struct dentry *parent; +}; + +static inline struct dentry *vfsub_lkup_one(struct qstr *name, + struct dentry *parent) +{ + return vfsub_lookup_one_len(name->name, parent, name->len); +} + +void vfsub_call_lkup_one(void *args); + +/* ---------------------------------------------------------------------- */ + +static inline int vfsub_mnt_want_write(struct vfsmount *mnt) +{ + int err; + + lockdep_off(); + err = mnt_want_write(mnt); + lockdep_on(); + return err; +} + +static inline void vfsub_mnt_drop_write(struct vfsmount *mnt) +{ + lockdep_off(); + mnt_drop_write(mnt); + lockdep_on(); +} + +#if 0 /* reserved */ +static inline void vfsub_mnt_drop_write_file(struct file *file) +{ + lockdep_off(); + mnt_drop_write_file(file); + lockdep_on(); +} +#endif + +/* ---------------------------------------------------------------------- */ + +struct au_hinode; +struct dentry *vfsub_lock_rename(struct dentry *d1, struct au_hinode *hdir1, + struct dentry *d2, struct au_hinode *hdir2); +void vfsub_unlock_rename(struct dentry *d1, struct au_hinode *hdir1, + struct dentry *d2, struct au_hinode *hdir2); + +int vfsub_create(struct inode *dir, struct path *path, int mode, + bool want_excl); +int vfsub_symlink(struct inode *dir, struct path *path, + const char *symname); +int vfsub_mknod(struct inode *dir, struct path *path, int mode, dev_t dev); +int vfsub_link(struct dentry *src_dentry, struct inode *dir, + struct path *path, struct inode **delegated_inode); +int vfsub_rename(struct inode *src_hdir, struct dentry *src_dentry, + struct inode *hdir, struct path *path, + struct inode **delegated_inode, unsigned int flags); +int vfsub_mkdir(struct inode *dir, struct path *path, int mode); +int vfsub_rmdir(struct inode *dir, struct path *path); + +/* ---------------------------------------------------------------------- */ + +ssize_t vfsub_read_u(struct file *file, char __user *ubuf, size_t count, + loff_t *ppos); +ssize_t vfsub_read_k(struct file *file, void *kbuf, size_t count, + loff_t *ppos); +ssize_t vfsub_write_u(struct file *file, const char __user *ubuf, size_t count, + loff_t *ppos); +ssize_t vfsub_write_k(struct file *file, void *kbuf, size_t count, + loff_t *ppos); +int vfsub_flush(struct file *file, fl_owner_t id); +int vfsub_iterate_dir(struct file *file, struct dir_context *ctx); + +static inline loff_t vfsub_f_size_read(struct file *file) +{ + return i_size_read(file_inode(file)); +} + +static inline unsigned int vfsub_file_flags(struct file *file) +{ + unsigned int flags; + + spin_lock(&file->f_lock); + flags = file->f_flags; + spin_unlock(&file->f_lock); + + return flags; +} + +static inline int vfsub_file_execed(struct file *file) +{ + /* todo: direct access f_flags */ + return !!(vfsub_file_flags(file) & __FMODE_EXEC); +} + +#if 0 /* reserved */ +static inline void vfsub_file_accessed(struct file *h_file) +{ + file_accessed(h_file); + vfsub_update_h_iattr(&h_file->f_path, /*did*/NULL); /*ignore*/ +} +#endif + +#if 0 /* reserved */ +static inline void vfsub_touch_atime(struct vfsmount *h_mnt, + struct dentry *h_dentry) +{ + struct path h_path = { + .dentry = h_dentry, + .mnt = h_mnt + }; + touch_atime(&h_path); + vfsub_update_h_iattr(&h_path, /*did*/NULL); /*ignore*/ +} +#endif + +static inline int vfsub_update_time(struct inode *h_inode, + struct timespec64 *ts, int flags) +{ + return update_time(h_inode, ts, flags); + /* no vfsub_update_h_iattr() since we don't have struct path */ +} + +#ifdef CONFIG_FS_POSIX_ACL +static inline int vfsub_acl_chmod(struct inode *h_inode, umode_t h_mode) +{ + int err; + + err = posix_acl_chmod(h_inode, h_mode); + if (err == -EOPNOTSUPP) + err = 0; + return err; +} +#else +AuStubInt0(vfsub_acl_chmod, struct inode *h_inode, umode_t h_mode); +#endif + +long vfsub_splice_to(struct file *in, loff_t *ppos, + struct pipe_inode_info *pipe, size_t len, + unsigned int flags); +long vfsub_splice_from(struct pipe_inode_info *pipe, struct file *out, + loff_t *ppos, size_t len, unsigned int flags); + +static inline long vfsub_truncate(struct path *path, loff_t length) +{ + long err; + + lockdep_off(); + err = vfs_truncate(path, length); + lockdep_on(); + return err; +} + +int vfsub_trunc(struct path *h_path, loff_t length, unsigned int attr, + struct file *h_file); +int vfsub_fsync(struct file *file, struct path *path, int datasync); + +/* + * re-use branch fs's ioctl(FICLONE) while aufs itself doesn't support such + * ioctl. + */ +static inline int vfsub_clone_file_range(struct file *src, struct file *dst, + u64 len) +{ + int err; + + lockdep_off(); + err = vfs_clone_file_range(src, 0, dst, 0, len); + lockdep_on(); + + return err; +} + +/* copy_file_range(2) is a systemcall */ +static inline ssize_t vfsub_copy_file_range(struct file *src, loff_t src_pos, + struct file *dst, loff_t dst_pos, + size_t len, unsigned int flags) +{ + ssize_t ssz; + + lockdep_off(); + ssz = vfs_copy_file_range(src, src_pos, dst, dst_pos, len, flags); + lockdep_on(); + + return ssz; +} + +/* ---------------------------------------------------------------------- */ + +static inline loff_t vfsub_llseek(struct file *file, loff_t offset, int origin) +{ + loff_t err; + + lockdep_off(); + err = vfs_llseek(file, offset, origin); + lockdep_on(); + return err; +} + +/* ---------------------------------------------------------------------- */ + +int vfsub_sio_mkdir(struct inode *dir, struct path *path, int mode); +int vfsub_sio_rmdir(struct inode *dir, struct path *path); +int vfsub_sio_notify_change(struct path *path, struct iattr *ia, + struct inode **delegated_inode); +int vfsub_notify_change(struct path *path, struct iattr *ia, + struct inode **delegated_inode); +int vfsub_unlink(struct inode *dir, struct path *path, + struct inode **delegated_inode, int force); + +static inline int vfsub_getattr(const struct path *path, struct kstat *st) +{ + return vfs_getattr(path, st, STATX_BASIC_STATS, AT_STATX_SYNC_AS_STAT); +} + +/* ---------------------------------------------------------------------- */ + +static inline int vfsub_setxattr(struct dentry *dentry, const char *name, + const void *value, size_t size, int flags) +{ + int err; + + lockdep_off(); + err = vfs_setxattr(dentry, name, value, size, flags); + lockdep_on(); + + return err; +} + +static inline int vfsub_removexattr(struct dentry *dentry, const char *name) +{ + int err; + + lockdep_off(); + err = vfs_removexattr(dentry, name); + lockdep_on(); + + return err; +} + +#endif /* __KERNEL__ */ +#endif /* __AUFS_VFSUB_H__ */ diff --git a/fs/aufs/wbr_policy.c b/fs/aufs/wbr_policy.c new file mode 100644 index 00000000000..6e97c806a1e --- /dev/null +++ b/fs/aufs/wbr_policy.c @@ -0,0 +1,830 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * policies for selecting one among multiple writable branches + */ + +#include +#include "aufs.h" + +/* subset of cpup_attr() */ +static noinline_for_stack +int au_cpdown_attr(struct path *h_path, struct dentry *h_src) +{ + int err, sbits; + struct iattr ia; + struct inode *h_isrc; + + h_isrc = d_inode(h_src); + ia.ia_valid = ATTR_FORCE | ATTR_MODE | ATTR_UID | ATTR_GID; + ia.ia_mode = h_isrc->i_mode; + ia.ia_uid = h_isrc->i_uid; + ia.ia_gid = h_isrc->i_gid; + sbits = !!(ia.ia_mode & (S_ISUID | S_ISGID)); + au_cpup_attr_flags(d_inode(h_path->dentry), h_isrc->i_flags); + /* no delegation since it is just created */ + err = vfsub_sio_notify_change(h_path, &ia, /*delegated*/NULL); + + /* is this nfs only? */ + if (!err && sbits && au_test_nfs(h_path->dentry->d_sb)) { + ia.ia_valid = ATTR_FORCE | ATTR_MODE; + ia.ia_mode = h_isrc->i_mode; + err = vfsub_sio_notify_change(h_path, &ia, /*delegated*/NULL); + } + + return err; +} + +#define AuCpdown_PARENT_OPQ 1 +#define AuCpdown_WHED (1 << 1) +#define AuCpdown_MADE_DIR (1 << 2) +#define AuCpdown_DIROPQ (1 << 3) +#define au_ftest_cpdown(flags, name) ((flags) & AuCpdown_##name) +#define au_fset_cpdown(flags, name) \ + do { (flags) |= AuCpdown_##name; } while (0) +#define au_fclr_cpdown(flags, name) \ + do { (flags) &= ~AuCpdown_##name; } while (0) + +static int au_cpdown_dir_opq(struct dentry *dentry, aufs_bindex_t bdst, + unsigned int *flags) +{ + int err; + struct dentry *opq_dentry; + + opq_dentry = au_diropq_create(dentry, bdst); + err = PTR_ERR(opq_dentry); + if (IS_ERR(opq_dentry)) + goto out; + dput(opq_dentry); + au_fset_cpdown(*flags, DIROPQ); + +out: + return err; +} + +static int au_cpdown_dir_wh(struct dentry *dentry, struct dentry *h_parent, + struct inode *dir, aufs_bindex_t bdst) +{ + int err; + struct path h_path; + struct au_branch *br; + + br = au_sbr(dentry->d_sb, bdst); + h_path.dentry = au_wh_lkup(h_parent, &dentry->d_name, br); + err = PTR_ERR(h_path.dentry); + if (IS_ERR(h_path.dentry)) + goto out; + + err = 0; + if (d_is_positive(h_path.dentry)) { + h_path.mnt = au_br_mnt(br); + err = au_wh_unlink_dentry(au_h_iptr(dir, bdst), &h_path, + dentry); + } + dput(h_path.dentry); + +out: + return err; +} + +static int au_cpdown_dir(struct dentry *dentry, aufs_bindex_t bdst, + struct au_pin *pin, + struct dentry *h_parent, void *arg) +{ + int err, rerr; + aufs_bindex_t bopq, btop; + struct path h_path; + struct dentry *parent; + struct inode *h_dir, *h_inode, *inode, *dir; + unsigned int *flags = arg; + + btop = au_dbtop(dentry); + /* dentry is di-locked */ + parent = dget_parent(dentry); + dir = d_inode(parent); + h_dir = d_inode(h_parent); + AuDebugOn(h_dir != au_h_iptr(dir, bdst)); + IMustLock(h_dir); + + err = au_lkup_neg(dentry, bdst, /*wh*/0); + if (unlikely(err < 0)) + goto out; + h_path.dentry = au_h_dptr(dentry, bdst); + h_path.mnt = au_sbr_mnt(dentry->d_sb, bdst); + err = vfsub_sio_mkdir(au_h_iptr(dir, bdst), &h_path, 0755); + if (unlikely(err)) + goto out_put; + au_fset_cpdown(*flags, MADE_DIR); + + bopq = au_dbdiropq(dentry); + au_fclr_cpdown(*flags, WHED); + au_fclr_cpdown(*flags, DIROPQ); + if (au_dbwh(dentry) == bdst) + au_fset_cpdown(*flags, WHED); + if (!au_ftest_cpdown(*flags, PARENT_OPQ) && bopq <= bdst) + au_fset_cpdown(*flags, PARENT_OPQ); + h_inode = d_inode(h_path.dentry); + inode_lock_nested(h_inode, AuLsc_I_CHILD); + if (au_ftest_cpdown(*flags, WHED)) { + err = au_cpdown_dir_opq(dentry, bdst, flags); + if (unlikely(err)) { + inode_unlock(h_inode); + goto out_dir; + } + } + + err = au_cpdown_attr(&h_path, au_h_dptr(dentry, btop)); + inode_unlock(h_inode); + if (unlikely(err)) + goto out_opq; + + if (au_ftest_cpdown(*flags, WHED)) { + err = au_cpdown_dir_wh(dentry, h_parent, dir, bdst); + if (unlikely(err)) + goto out_opq; + } + + inode = d_inode(dentry); + if (au_ibbot(inode) < bdst) + au_set_ibbot(inode, bdst); + au_set_h_iptr(inode, bdst, au_igrab(h_inode), + au_hi_flags(inode, /*isdir*/1)); + au_fhsm_wrote(dentry->d_sb, bdst, /*force*/0); + goto out; /* success */ + + /* revert */ +out_opq: + if (au_ftest_cpdown(*flags, DIROPQ)) { + inode_lock_nested(h_inode, AuLsc_I_CHILD); + rerr = au_diropq_remove(dentry, bdst); + inode_unlock(h_inode); + if (unlikely(rerr)) { + AuIOErr("failed removing diropq for %pd b%d (%d)\n", + dentry, bdst, rerr); + err = -EIO; + goto out; + } + } +out_dir: + if (au_ftest_cpdown(*flags, MADE_DIR)) { + rerr = vfsub_sio_rmdir(au_h_iptr(dir, bdst), &h_path); + if (unlikely(rerr)) { + AuIOErr("failed removing %pd b%d (%d)\n", + dentry, bdst, rerr); + err = -EIO; + } + } +out_put: + au_set_h_dptr(dentry, bdst, NULL); + if (au_dbbot(dentry) == bdst) + au_update_dbbot(dentry); +out: + dput(parent); + return err; +} + +int au_cpdown_dirs(struct dentry *dentry, aufs_bindex_t bdst) +{ + int err; + unsigned int flags; + + flags = 0; + err = au_cp_dirs(dentry, bdst, au_cpdown_dir, &flags); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* policies for create */ + +int au_wbr_nonopq(struct dentry *dentry, aufs_bindex_t bindex) +{ + int err, i, j, ndentry; + aufs_bindex_t bopq; + struct au_dcsub_pages dpages; + struct au_dpage *dpage; + struct dentry **dentries, *parent, *d; + + err = au_dpages_init(&dpages, GFP_NOFS); + if (unlikely(err)) + goto out; + parent = dget_parent(dentry); + err = au_dcsub_pages_rev_aufs(&dpages, parent, /*do_include*/0); + if (unlikely(err)) + goto out_free; + + err = bindex; + for (i = 0; i < dpages.ndpage; i++) { + dpage = dpages.dpages + i; + dentries = dpage->dentries; + ndentry = dpage->ndentry; + for (j = 0; j < ndentry; j++) { + d = dentries[j]; + di_read_lock_parent2(d, !AuLock_IR); + bopq = au_dbdiropq(d); + di_read_unlock(d, !AuLock_IR); + if (bopq >= 0 && bopq < err) + err = bopq; + } + } + +out_free: + dput(parent); + au_dpages_free(&dpages); +out: + return err; +} + +static int au_wbr_bu(struct super_block *sb, aufs_bindex_t bindex) +{ + for (; bindex >= 0; bindex--) + if (!au_br_rdonly(au_sbr(sb, bindex))) + return bindex; + return -EROFS; +} + +/* top down parent */ +static int au_wbr_create_tdp(struct dentry *dentry, + unsigned int flags __maybe_unused) +{ + int err; + aufs_bindex_t btop, bindex; + struct super_block *sb; + struct dentry *parent, *h_parent; + + sb = dentry->d_sb; + btop = au_dbtop(dentry); + err = btop; + if (!au_br_rdonly(au_sbr(sb, btop))) + goto out; + + err = -EROFS; + parent = dget_parent(dentry); + for (bindex = au_dbtop(parent); bindex < btop; bindex++) { + h_parent = au_h_dptr(parent, bindex); + if (!h_parent || d_is_negative(h_parent)) + continue; + + if (!au_br_rdonly(au_sbr(sb, bindex))) { + err = bindex; + break; + } + } + dput(parent); + + /* bottom up here */ + if (unlikely(err < 0)) { + err = au_wbr_bu(sb, btop - 1); + if (err >= 0) + err = au_wbr_nonopq(dentry, err); + } + +out: + AuDbg("b%d\n", err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* an exception for the policy other than tdp */ +static int au_wbr_create_exp(struct dentry *dentry) +{ + int err; + aufs_bindex_t bwh, bdiropq; + struct dentry *parent; + + err = -1; + bwh = au_dbwh(dentry); + parent = dget_parent(dentry); + bdiropq = au_dbdiropq(parent); + if (bwh >= 0) { + if (bdiropq >= 0) + err = min(bdiropq, bwh); + else + err = bwh; + AuDbg("%d\n", err); + } else if (bdiropq >= 0) { + err = bdiropq; + AuDbg("%d\n", err); + } + dput(parent); + + if (err >= 0) + err = au_wbr_nonopq(dentry, err); + + if (err >= 0 && au_br_rdonly(au_sbr(dentry->d_sb, err))) + err = -1; + + AuDbg("%d\n", err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* round robin */ +static int au_wbr_create_init_rr(struct super_block *sb) +{ + int err; + + err = au_wbr_bu(sb, au_sbbot(sb)); + atomic_set(&au_sbi(sb)->si_wbr_rr_next, -err); /* less important */ + /* smp_mb(); */ + + AuDbg("b%d\n", err); + return err; +} + +static int au_wbr_create_rr(struct dentry *dentry, unsigned int flags) +{ + int err, nbr; + unsigned int u; + aufs_bindex_t bindex, bbot; + struct super_block *sb; + atomic_t *next; + + err = au_wbr_create_exp(dentry); + if (err >= 0) + goto out; + + sb = dentry->d_sb; + next = &au_sbi(sb)->si_wbr_rr_next; + bbot = au_sbbot(sb); + nbr = bbot + 1; + for (bindex = 0; bindex <= bbot; bindex++) { + if (!au_ftest_wbr(flags, DIR)) { + err = atomic_dec_return(next) + 1; + /* modulo for 0 is meaningless */ + if (unlikely(!err)) + err = atomic_dec_return(next) + 1; + } else + err = atomic_read(next); + AuDbg("%d\n", err); + u = err; + err = u % nbr; + AuDbg("%d\n", err); + if (!au_br_rdonly(au_sbr(sb, err))) + break; + err = -EROFS; + } + + if (err >= 0) + err = au_wbr_nonopq(dentry, err); + +out: + AuDbg("%d\n", err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* most free space */ +static void au_mfs(struct dentry *dentry, struct dentry *parent) +{ + struct super_block *sb; + struct au_branch *br; + struct au_wbr_mfs *mfs; + struct dentry *h_parent; + aufs_bindex_t bindex, bbot; + int err; + unsigned long long b, bavail; + struct path h_path; + /* reduce the stack usage */ + struct kstatfs *st; + + st = kmalloc(sizeof(*st), GFP_NOFS); + if (unlikely(!st)) { + AuWarn1("failed updating mfs(%d), ignored\n", -ENOMEM); + return; + } + + bavail = 0; + sb = dentry->d_sb; + mfs = &au_sbi(sb)->si_wbr_mfs; + MtxMustLock(&mfs->mfs_lock); + mfs->mfs_bindex = -EROFS; + mfs->mfsrr_bytes = 0; + if (!parent) { + bindex = 0; + bbot = au_sbbot(sb); + } else { + bindex = au_dbtop(parent); + bbot = au_dbtaildir(parent); + } + + for (; bindex <= bbot; bindex++) { + if (parent) { + h_parent = au_h_dptr(parent, bindex); + if (!h_parent || d_is_negative(h_parent)) + continue; + } + br = au_sbr(sb, bindex); + if (au_br_rdonly(br)) + continue; + + /* sb->s_root for NFS is unreliable */ + h_path.mnt = au_br_mnt(br); + h_path.dentry = h_path.mnt->mnt_root; + err = vfs_statfs(&h_path, st); + if (unlikely(err)) { + AuWarn1("failed statfs, b%d, %d\n", bindex, err); + continue; + } + + /* when the available size is equal, select the lower one */ + BUILD_BUG_ON(sizeof(b) < sizeof(st->f_bavail) + || sizeof(b) < sizeof(st->f_bsize)); + b = st->f_bavail * st->f_bsize; + br->br_wbr->wbr_bytes = b; + if (b >= bavail) { + bavail = b; + mfs->mfs_bindex = bindex; + mfs->mfs_jiffy = jiffies; + } + } + + mfs->mfsrr_bytes = bavail; + AuDbg("b%d\n", mfs->mfs_bindex); + kfree(st); +} + +static int au_wbr_create_mfs(struct dentry *dentry, unsigned int flags) +{ + int err; + struct dentry *parent; + struct super_block *sb; + struct au_wbr_mfs *mfs; + + err = au_wbr_create_exp(dentry); + if (err >= 0) + goto out; + + sb = dentry->d_sb; + parent = NULL; + if (au_ftest_wbr(flags, PARENT)) + parent = dget_parent(dentry); + mfs = &au_sbi(sb)->si_wbr_mfs; + mutex_lock(&mfs->mfs_lock); + if (time_after(jiffies, mfs->mfs_jiffy + mfs->mfs_expire) + || mfs->mfs_bindex < 0 + || au_br_rdonly(au_sbr(sb, mfs->mfs_bindex))) + au_mfs(dentry, parent); + mutex_unlock(&mfs->mfs_lock); + err = mfs->mfs_bindex; + dput(parent); + + if (err >= 0) + err = au_wbr_nonopq(dentry, err); + +out: + AuDbg("b%d\n", err); + return err; +} + +static int au_wbr_create_init_mfs(struct super_block *sb) +{ + struct au_wbr_mfs *mfs; + + mfs = &au_sbi(sb)->si_wbr_mfs; + mutex_init(&mfs->mfs_lock); + mfs->mfs_jiffy = 0; + mfs->mfs_bindex = -EROFS; + + return 0; +} + +static int au_wbr_create_fin_mfs(struct super_block *sb __maybe_unused) +{ + mutex_destroy(&au_sbi(sb)->si_wbr_mfs.mfs_lock); + return 0; +} + +/* ---------------------------------------------------------------------- */ + +/* top down regardless parent, and then mfs */ +static int au_wbr_create_tdmfs(struct dentry *dentry, + unsigned int flags __maybe_unused) +{ + int err; + aufs_bindex_t bwh, btail, bindex, bfound, bmfs; + unsigned long long watermark; + struct super_block *sb; + struct au_wbr_mfs *mfs; + struct au_branch *br; + struct dentry *parent; + + sb = dentry->d_sb; + mfs = &au_sbi(sb)->si_wbr_mfs; + mutex_lock(&mfs->mfs_lock); + if (time_after(jiffies, mfs->mfs_jiffy + mfs->mfs_expire) + || mfs->mfs_bindex < 0) + au_mfs(dentry, /*parent*/NULL); + watermark = mfs->mfsrr_watermark; + bmfs = mfs->mfs_bindex; + mutex_unlock(&mfs->mfs_lock); + + /* another style of au_wbr_create_exp() */ + bwh = au_dbwh(dentry); + parent = dget_parent(dentry); + btail = au_dbtaildir(parent); + if (bwh >= 0 && bwh < btail) + btail = bwh; + + err = au_wbr_nonopq(dentry, btail); + if (unlikely(err < 0)) + goto out; + btail = err; + bfound = -1; + for (bindex = 0; bindex <= btail; bindex++) { + br = au_sbr(sb, bindex); + if (au_br_rdonly(br)) + continue; + if (br->br_wbr->wbr_bytes > watermark) { + bfound = bindex; + break; + } + } + err = bfound; + if (err < 0) + err = bmfs; + +out: + dput(parent); + AuDbg("b%d\n", err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* most free space and then round robin */ +static int au_wbr_create_mfsrr(struct dentry *dentry, unsigned int flags) +{ + int err; + struct au_wbr_mfs *mfs; + + err = au_wbr_create_mfs(dentry, flags); + if (err >= 0) { + mfs = &au_sbi(dentry->d_sb)->si_wbr_mfs; + mutex_lock(&mfs->mfs_lock); + if (mfs->mfsrr_bytes < mfs->mfsrr_watermark) + err = au_wbr_create_rr(dentry, flags); + mutex_unlock(&mfs->mfs_lock); + } + + AuDbg("b%d\n", err); + return err; +} + +static int au_wbr_create_init_mfsrr(struct super_block *sb) +{ + int err; + + au_wbr_create_init_mfs(sb); /* ignore */ + err = au_wbr_create_init_rr(sb); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* top down parent and most free space */ +static int au_wbr_create_pmfs(struct dentry *dentry, unsigned int flags) +{ + int err, e2; + unsigned long long b; + aufs_bindex_t bindex, btop, bbot; + struct super_block *sb; + struct dentry *parent, *h_parent; + struct au_branch *br; + + err = au_wbr_create_tdp(dentry, flags); + if (unlikely(err < 0)) + goto out; + parent = dget_parent(dentry); + btop = au_dbtop(parent); + bbot = au_dbtaildir(parent); + if (btop == bbot) + goto out_parent; /* success */ + + e2 = au_wbr_create_mfs(dentry, flags); + if (e2 < 0) + goto out_parent; /* success */ + + /* when the available size is equal, select upper one */ + sb = dentry->d_sb; + br = au_sbr(sb, err); + b = br->br_wbr->wbr_bytes; + AuDbg("b%d, %llu\n", err, b); + + for (bindex = btop; bindex <= bbot; bindex++) { + h_parent = au_h_dptr(parent, bindex); + if (!h_parent || d_is_negative(h_parent)) + continue; + + br = au_sbr(sb, bindex); + if (!au_br_rdonly(br) && br->br_wbr->wbr_bytes > b) { + b = br->br_wbr->wbr_bytes; + err = bindex; + AuDbg("b%d, %llu\n", err, b); + } + } + + if (err >= 0) + err = au_wbr_nonopq(dentry, err); + +out_parent: + dput(parent); +out: + AuDbg("b%d\n", err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* + * - top down parent + * - most free space with parent + * - most free space round-robin regardless parent + */ +static int au_wbr_create_pmfsrr(struct dentry *dentry, unsigned int flags) +{ + int err; + unsigned long long watermark; + struct super_block *sb; + struct au_branch *br; + struct au_wbr_mfs *mfs; + + err = au_wbr_create_pmfs(dentry, flags | AuWbr_PARENT); + if (unlikely(err < 0)) + goto out; + + sb = dentry->d_sb; + br = au_sbr(sb, err); + mfs = &au_sbi(sb)->si_wbr_mfs; + mutex_lock(&mfs->mfs_lock); + watermark = mfs->mfsrr_watermark; + mutex_unlock(&mfs->mfs_lock); + if (br->br_wbr->wbr_bytes < watermark) + /* regardless the parent dir */ + err = au_wbr_create_mfsrr(dentry, flags); + +out: + AuDbg("b%d\n", err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* policies for copyup */ + +/* top down parent */ +static int au_wbr_copyup_tdp(struct dentry *dentry) +{ + return au_wbr_create_tdp(dentry, /*flags, anything is ok*/0); +} + +/* bottom up parent */ +static int au_wbr_copyup_bup(struct dentry *dentry) +{ + int err; + aufs_bindex_t bindex, btop; + struct dentry *parent, *h_parent; + struct super_block *sb; + + err = -EROFS; + sb = dentry->d_sb; + parent = dget_parent(dentry); + btop = au_dbtop(parent); + for (bindex = au_dbtop(dentry); bindex >= btop; bindex--) { + h_parent = au_h_dptr(parent, bindex); + if (!h_parent || d_is_negative(h_parent)) + continue; + + if (!au_br_rdonly(au_sbr(sb, bindex))) { + err = bindex; + break; + } + } + dput(parent); + + /* bottom up here */ + if (unlikely(err < 0)) + err = au_wbr_bu(sb, btop - 1); + + AuDbg("b%d\n", err); + return err; +} + +/* bottom up */ +int au_wbr_do_copyup_bu(struct dentry *dentry, aufs_bindex_t btop) +{ + int err; + + err = au_wbr_bu(dentry->d_sb, btop); + AuDbg("b%d\n", err); + if (err > btop) + err = au_wbr_nonopq(dentry, err); + + AuDbg("b%d\n", err); + return err; +} + +static int au_wbr_copyup_bu(struct dentry *dentry) +{ + int err; + aufs_bindex_t btop; + + btop = au_dbtop(dentry); + err = au_wbr_do_copyup_bu(dentry, btop); + return err; +} + +/* ---------------------------------------------------------------------- */ + +struct au_wbr_copyup_operations au_wbr_copyup_ops[] = { + [AuWbrCopyup_TDP] = { + .copyup = au_wbr_copyup_tdp + }, + [AuWbrCopyup_BUP] = { + .copyup = au_wbr_copyup_bup + }, + [AuWbrCopyup_BU] = { + .copyup = au_wbr_copyup_bu + } +}; + +struct au_wbr_create_operations au_wbr_create_ops[] = { + [AuWbrCreate_TDP] = { + .create = au_wbr_create_tdp + }, + [AuWbrCreate_RR] = { + .create = au_wbr_create_rr, + .init = au_wbr_create_init_rr + }, + [AuWbrCreate_MFS] = { + .create = au_wbr_create_mfs, + .init = au_wbr_create_init_mfs, + .fin = au_wbr_create_fin_mfs + }, + [AuWbrCreate_MFSV] = { + .create = au_wbr_create_mfs, + .init = au_wbr_create_init_mfs, + .fin = au_wbr_create_fin_mfs + }, + [AuWbrCreate_MFSRR] = { + .create = au_wbr_create_mfsrr, + .init = au_wbr_create_init_mfsrr, + .fin = au_wbr_create_fin_mfs + }, + [AuWbrCreate_MFSRRV] = { + .create = au_wbr_create_mfsrr, + .init = au_wbr_create_init_mfsrr, + .fin = au_wbr_create_fin_mfs + }, + [AuWbrCreate_TDMFS] = { + .create = au_wbr_create_tdmfs, + .init = au_wbr_create_init_mfs, + .fin = au_wbr_create_fin_mfs + }, + [AuWbrCreate_TDMFSV] = { + .create = au_wbr_create_tdmfs, + .init = au_wbr_create_init_mfs, + .fin = au_wbr_create_fin_mfs + }, + [AuWbrCreate_PMFS] = { + .create = au_wbr_create_pmfs, + .init = au_wbr_create_init_mfs, + .fin = au_wbr_create_fin_mfs + }, + [AuWbrCreate_PMFSV] = { + .create = au_wbr_create_pmfs, + .init = au_wbr_create_init_mfs, + .fin = au_wbr_create_fin_mfs + }, + [AuWbrCreate_PMFSRR] = { + .create = au_wbr_create_pmfsrr, + .init = au_wbr_create_init_mfsrr, + .fin = au_wbr_create_fin_mfs + }, + [AuWbrCreate_PMFSRRV] = { + .create = au_wbr_create_pmfsrr, + .init = au_wbr_create_init_mfsrr, + .fin = au_wbr_create_fin_mfs + } +}; diff --git a/fs/aufs/whout.c b/fs/aufs/whout.c new file mode 100644 index 00000000000..5244085acf0 --- /dev/null +++ b/fs/aufs/whout.c @@ -0,0 +1,1062 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * whiteout for logical deletion and opaque directory + */ + +#include "aufs.h" + +#define WH_MASK 0444 + +/* + * If a directory contains this file, then it is opaque. We start with the + * .wh. flag so that it is blocked by lookup. + */ +static struct qstr diropq_name = QSTR_INIT(AUFS_WH_DIROPQ, + sizeof(AUFS_WH_DIROPQ) - 1); + +/* + * generate whiteout name, which is NOT terminated by NULL. + * @name: original d_name.name + * @len: original d_name.len + * @wh: whiteout qstr + * returns zero when succeeds, otherwise error. + * succeeded value as wh->name should be freed by kfree(). + */ +int au_wh_name_alloc(struct qstr *wh, const struct qstr *name) +{ + char *p; + + if (unlikely(name->len > PATH_MAX - AUFS_WH_PFX_LEN)) + return -ENAMETOOLONG; + + wh->len = name->len + AUFS_WH_PFX_LEN; + p = kmalloc(wh->len, GFP_NOFS); + wh->name = p; + if (p) { + memcpy(p, AUFS_WH_PFX, AUFS_WH_PFX_LEN); + memcpy(p + AUFS_WH_PFX_LEN, name->name, name->len); + /* smp_mb(); */ + return 0; + } + return -ENOMEM; +} + +/* ---------------------------------------------------------------------- */ + +/* + * test if the @wh_name exists under @h_parent. + * @try_sio specifies the necessary of super-io. + */ +int au_wh_test(struct dentry *h_parent, struct qstr *wh_name, int try_sio) +{ + int err; + struct dentry *wh_dentry; + + if (!try_sio) + wh_dentry = vfsub_lkup_one(wh_name, h_parent); + else + wh_dentry = au_sio_lkup_one(wh_name, h_parent); + err = PTR_ERR(wh_dentry); + if (IS_ERR(wh_dentry)) { + if (err == -ENAMETOOLONG) + err = 0; + goto out; + } + + err = 0; + if (d_is_negative(wh_dentry)) + goto out_wh; /* success */ + + err = 1; + if (d_is_reg(wh_dentry)) + goto out_wh; /* success */ + + err = -EIO; + AuIOErr("%pd Invalid whiteout entry type 0%o.\n", + wh_dentry, d_inode(wh_dentry)->i_mode); + +out_wh: + dput(wh_dentry); +out: + return err; +} + +/* + * test if the @h_dentry sets opaque or not. + */ +int au_diropq_test(struct dentry *h_dentry) +{ + int err; + struct inode *h_dir; + + h_dir = d_inode(h_dentry); + err = au_wh_test(h_dentry, &diropq_name, + au_test_h_perm_sio(h_dir, MAY_EXEC)); + return err; +} + +/* + * returns a negative dentry whose name is unique and temporary. + */ +struct dentry *au_whtmp_lkup(struct dentry *h_parent, struct au_branch *br, + struct qstr *prefix) +{ + struct dentry *dentry; + int i; + char defname[NAME_MAX - AUFS_MAX_NAMELEN + DNAME_INLINE_LEN + 1], + *name, *p; + /* strict atomic_t is unnecessary here */ + static unsigned short cnt; + struct qstr qs; + + BUILD_BUG_ON(sizeof(cnt) * 2 > AUFS_WH_TMP_LEN); + + name = defname; + qs.len = sizeof(defname) - DNAME_INLINE_LEN + prefix->len - 1; + if (unlikely(prefix->len > DNAME_INLINE_LEN)) { + dentry = ERR_PTR(-ENAMETOOLONG); + if (unlikely(qs.len > NAME_MAX)) + goto out; + dentry = ERR_PTR(-ENOMEM); + name = kmalloc(qs.len + 1, GFP_NOFS); + if (unlikely(!name)) + goto out; + } + + /* doubly whiteout-ed */ + memcpy(name, AUFS_WH_PFX AUFS_WH_PFX, AUFS_WH_PFX_LEN * 2); + p = name + AUFS_WH_PFX_LEN * 2; + memcpy(p, prefix->name, prefix->len); + p += prefix->len; + *p++ = '.'; + AuDebugOn(name + qs.len + 1 - p <= AUFS_WH_TMP_LEN); + + qs.name = name; + for (i = 0; i < 3; i++) { + sprintf(p, "%.*x", AUFS_WH_TMP_LEN, cnt++); + dentry = au_sio_lkup_one(&qs, h_parent); + if (IS_ERR(dentry) || d_is_negative(dentry)) + goto out_name; + dput(dentry); + } + /* pr_warn("could not get random name\n"); */ + dentry = ERR_PTR(-EEXIST); + AuDbg("%.*s\n", AuLNPair(&qs)); + BUG(); + +out_name: + if (name != defname) + kfree(name); +out: + AuTraceErrPtr(dentry); + return dentry; +} + +/* + * rename the @h_dentry on @br to the whiteouted temporary name. + */ +int au_whtmp_ren(struct dentry *h_dentry, struct au_branch *br) +{ + int err; + struct path h_path = { + .mnt = au_br_mnt(br) + }; + struct inode *h_dir, *delegated; + struct dentry *h_parent; + + h_parent = h_dentry->d_parent; /* dir inode is locked */ + h_dir = d_inode(h_parent); + IMustLock(h_dir); + + h_path.dentry = au_whtmp_lkup(h_parent, br, &h_dentry->d_name); + err = PTR_ERR(h_path.dentry); + if (IS_ERR(h_path.dentry)) + goto out; + + /* under the same dir, no need to lock_rename() */ + delegated = NULL; + err = vfsub_rename(h_dir, h_dentry, h_dir, &h_path, &delegated, + /*flags*/0); + AuTraceErr(err); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal rename\n"); + iput(delegated); + } + dput(h_path.dentry); + +out: + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ +/* + * functions for removing a whiteout + */ + +static int do_unlink_wh(struct inode *h_dir, struct path *h_path) +{ + int err, force; + struct inode *delegated; + + /* + * forces superio when the dir has a sticky bit. + * this may be a violation of unix fs semantics. + */ + force = (h_dir->i_mode & S_ISVTX) + && !uid_eq(current_fsuid(), d_inode(h_path->dentry)->i_uid); + delegated = NULL; + err = vfsub_unlink(h_dir, h_path, &delegated, force); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal unlink\n"); + iput(delegated); + } + return err; +} + +int au_wh_unlink_dentry(struct inode *h_dir, struct path *h_path, + struct dentry *dentry) +{ + int err; + + err = do_unlink_wh(h_dir, h_path); + if (!err && dentry) + au_set_dbwh(dentry, -1); + + return err; +} + +static int unlink_wh_name(struct dentry *h_parent, struct qstr *wh, + struct au_branch *br) +{ + int err; + struct path h_path = { + .mnt = au_br_mnt(br) + }; + + err = 0; + h_path.dentry = vfsub_lkup_one(wh, h_parent); + if (IS_ERR(h_path.dentry)) + err = PTR_ERR(h_path.dentry); + else { + if (d_is_reg(h_path.dentry)) + err = do_unlink_wh(d_inode(h_parent), &h_path); + dput(h_path.dentry); + } + + return err; +} + +/* ---------------------------------------------------------------------- */ +/* + * initialize/clean whiteout for a branch + */ + +static void au_wh_clean(struct inode *h_dir, struct path *whpath, + const int isdir) +{ + int err; + struct inode *delegated; + + if (d_is_negative(whpath->dentry)) + return; + + if (isdir) + err = vfsub_rmdir(h_dir, whpath); + else { + delegated = NULL; + err = vfsub_unlink(h_dir, whpath, &delegated, /*force*/0); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal unlink\n"); + iput(delegated); + } + } + if (unlikely(err)) + pr_warn("failed removing %pd (%d), ignored.\n", + whpath->dentry, err); +} + +static int test_linkable(struct dentry *h_root) +{ + struct inode *h_dir = d_inode(h_root); + + if (h_dir->i_op->link) + return 0; + + pr_err("%pd (%s) doesn't support link(2), use noplink and rw+nolwh\n", + h_root, au_sbtype(h_root->d_sb)); + return -ENOSYS; +} + +/* todo: should this mkdir be done in /sbin/mount.aufs helper? */ +static int au_whdir(struct inode *h_dir, struct path *path) +{ + int err; + + err = -EEXIST; + if (d_is_negative(path->dentry)) { + int mode = 0700; + + if (au_test_nfs(path->dentry->d_sb)) + mode |= 0111; + err = vfsub_mkdir(h_dir, path, mode); + } else if (d_is_dir(path->dentry)) + err = 0; + else + pr_err("unknown %pd exists\n", path->dentry); + + return err; +} + +struct au_wh_base { + const struct qstr *name; + struct dentry *dentry; +}; + +static void au_wh_init_ro(struct inode *h_dir, struct au_wh_base base[], + struct path *h_path) +{ + h_path->dentry = base[AuBrWh_BASE].dentry; + au_wh_clean(h_dir, h_path, /*isdir*/0); + h_path->dentry = base[AuBrWh_PLINK].dentry; + au_wh_clean(h_dir, h_path, /*isdir*/1); + h_path->dentry = base[AuBrWh_ORPH].dentry; + au_wh_clean(h_dir, h_path, /*isdir*/1); +} + +/* + * returns tri-state, + * minus: error, caller should print the message + * zero: succuess + * plus: error, caller should NOT print the message + */ +static int au_wh_init_rw_nolink(struct dentry *h_root, struct au_wbr *wbr, + int do_plink, struct au_wh_base base[], + struct path *h_path) +{ + int err; + struct inode *h_dir; + + h_dir = d_inode(h_root); + h_path->dentry = base[AuBrWh_BASE].dentry; + au_wh_clean(h_dir, h_path, /*isdir*/0); + h_path->dentry = base[AuBrWh_PLINK].dentry; + if (do_plink) { + err = test_linkable(h_root); + if (unlikely(err)) { + err = 1; + goto out; + } + + err = au_whdir(h_dir, h_path); + if (unlikely(err)) + goto out; + wbr->wbr_plink = dget(base[AuBrWh_PLINK].dentry); + } else + au_wh_clean(h_dir, h_path, /*isdir*/1); + h_path->dentry = base[AuBrWh_ORPH].dentry; + err = au_whdir(h_dir, h_path); + if (unlikely(err)) + goto out; + wbr->wbr_orph = dget(base[AuBrWh_ORPH].dentry); + +out: + return err; +} + +/* + * for the moment, aufs supports the branch filesystem which does not support + * link(2). testing on FAT which does not support i_op->setattr() fully either, + * copyup failed. finally, such filesystem will not be used as the writable + * branch. + * + * returns tri-state, see above. + */ +static int au_wh_init_rw(struct dentry *h_root, struct au_wbr *wbr, + int do_plink, struct au_wh_base base[], + struct path *h_path) +{ + int err; + struct inode *h_dir; + + WbrWhMustWriteLock(wbr); + + err = test_linkable(h_root); + if (unlikely(err)) { + err = 1; + goto out; + } + + /* + * todo: should this create be done in /sbin/mount.aufs helper? + */ + err = -EEXIST; + h_dir = d_inode(h_root); + if (d_is_negative(base[AuBrWh_BASE].dentry)) { + h_path->dentry = base[AuBrWh_BASE].dentry; + err = vfsub_create(h_dir, h_path, WH_MASK, /*want_excl*/true); + } else if (d_is_reg(base[AuBrWh_BASE].dentry)) + err = 0; + else + pr_err("unknown %pd2 exists\n", base[AuBrWh_BASE].dentry); + if (unlikely(err)) + goto out; + + h_path->dentry = base[AuBrWh_PLINK].dentry; + if (do_plink) { + err = au_whdir(h_dir, h_path); + if (unlikely(err)) + goto out; + wbr->wbr_plink = dget(base[AuBrWh_PLINK].dentry); + } else + au_wh_clean(h_dir, h_path, /*isdir*/1); + wbr->wbr_whbase = dget(base[AuBrWh_BASE].dentry); + + h_path->dentry = base[AuBrWh_ORPH].dentry; + err = au_whdir(h_dir, h_path); + if (unlikely(err)) + goto out; + wbr->wbr_orph = dget(base[AuBrWh_ORPH].dentry); + +out: + return err; +} + +/* + * initialize the whiteout base file/dir for @br. + */ +int au_wh_init(struct au_branch *br, struct super_block *sb) +{ + int err, i; + const unsigned char do_plink + = !!au_opt_test(au_mntflags(sb), PLINK); + struct inode *h_dir; + struct path path = br->br_path; + struct dentry *h_root = path.dentry; + struct au_wbr *wbr = br->br_wbr; + static const struct qstr base_name[] = { + [AuBrWh_BASE] = QSTR_INIT(AUFS_BASE_NAME, + sizeof(AUFS_BASE_NAME) - 1), + [AuBrWh_PLINK] = QSTR_INIT(AUFS_PLINKDIR_NAME, + sizeof(AUFS_PLINKDIR_NAME) - 1), + [AuBrWh_ORPH] = QSTR_INIT(AUFS_ORPHDIR_NAME, + sizeof(AUFS_ORPHDIR_NAME) - 1) + }; + struct au_wh_base base[] = { + [AuBrWh_BASE] = { + .name = base_name + AuBrWh_BASE, + .dentry = NULL + }, + [AuBrWh_PLINK] = { + .name = base_name + AuBrWh_PLINK, + .dentry = NULL + }, + [AuBrWh_ORPH] = { + .name = base_name + AuBrWh_ORPH, + .dentry = NULL + } + }; + + if (wbr) + WbrWhMustWriteLock(wbr); + + for (i = 0; i < AuBrWh_Last; i++) { + /* doubly whiteouted */ + struct dentry *d; + + d = au_wh_lkup(h_root, (void *)base[i].name, br); + err = PTR_ERR(d); + if (IS_ERR(d)) + goto out; + + base[i].dentry = d; + AuDebugOn(wbr + && wbr->wbr_wh[i] + && wbr->wbr_wh[i] != base[i].dentry); + } + + if (wbr) + for (i = 0; i < AuBrWh_Last; i++) { + dput(wbr->wbr_wh[i]); + wbr->wbr_wh[i] = NULL; + } + + err = 0; + if (!au_br_writable(br->br_perm)) { + h_dir = d_inode(h_root); + au_wh_init_ro(h_dir, base, &path); + } else if (!au_br_wh_linkable(br->br_perm)) { + err = au_wh_init_rw_nolink(h_root, wbr, do_plink, base, &path); + if (err > 0) + goto out; + else if (err) + goto out_err; + } else { + err = au_wh_init_rw(h_root, wbr, do_plink, base, &path); + if (err > 0) + goto out; + else if (err) + goto out_err; + } + goto out; /* success */ + +out_err: + pr_err("an error(%d) on the writable branch %pd(%s)\n", + err, h_root, au_sbtype(h_root->d_sb)); +out: + for (i = 0; i < AuBrWh_Last; i++) + dput(base[i].dentry); + return err; +} + +/* ---------------------------------------------------------------------- */ +/* + * whiteouts are all hard-linked usually. + * when its link count reaches a ceiling, we create a new whiteout base + * asynchronously. + */ + +struct reinit_br_wh { + struct super_block *sb; + struct au_branch *br; +}; + +static void reinit_br_wh(void *arg) +{ + int err; + aufs_bindex_t bindex; + struct path h_path; + struct reinit_br_wh *a = arg; + struct au_wbr *wbr; + struct inode *dir, *delegated; + struct dentry *h_root; + struct au_hinode *hdir; + + err = 0; + wbr = a->br->br_wbr; + /* big aufs lock */ + si_noflush_write_lock(a->sb); + if (!au_br_writable(a->br->br_perm)) + goto out; + bindex = au_br_index(a->sb, a->br->br_id); + if (unlikely(bindex < 0)) + goto out; + + di_read_lock_parent(a->sb->s_root, AuLock_IR); + dir = d_inode(a->sb->s_root); + hdir = au_hi(dir, bindex); + h_root = au_h_dptr(a->sb->s_root, bindex); + AuDebugOn(h_root != au_br_dentry(a->br)); + + au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT); + wbr_wh_write_lock(wbr); + err = au_h_verify(wbr->wbr_whbase, au_opt_udba(a->sb), hdir->hi_inode, + h_root, a->br); + if (!err) { + h_path.dentry = wbr->wbr_whbase; + h_path.mnt = au_br_mnt(a->br); + delegated = NULL; + err = vfsub_unlink(hdir->hi_inode, &h_path, &delegated, + /*force*/0); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal unlink\n"); + iput(delegated); + } + } else { + pr_warn("%pd is moved, ignored\n", wbr->wbr_whbase); + err = 0; + } + dput(wbr->wbr_whbase); + wbr->wbr_whbase = NULL; + if (!err) + err = au_wh_init(a->br, a->sb); + wbr_wh_write_unlock(wbr); + au_hn_inode_unlock(hdir); + di_read_unlock(a->sb->s_root, AuLock_IR); + if (!err) + au_fhsm_wrote(a->sb, bindex, /*force*/0); + +out: + if (wbr) + atomic_dec(&wbr->wbr_wh_running); + au_br_put(a->br); + si_write_unlock(a->sb); + au_nwt_done(&au_sbi(a->sb)->si_nowait); + kfree(arg); + if (unlikely(err)) + AuIOErr("err %d\n", err); +} + +static void kick_reinit_br_wh(struct super_block *sb, struct au_branch *br) +{ + int do_dec, wkq_err; + struct reinit_br_wh *arg; + + do_dec = 1; + if (atomic_inc_return(&br->br_wbr->wbr_wh_running) != 1) + goto out; + + /* ignore ENOMEM */ + arg = kmalloc(sizeof(*arg), GFP_NOFS); + if (arg) { + /* + * dec(wh_running), kfree(arg) and dec(br_count) + * in reinit function + */ + arg->sb = sb; + arg->br = br; + au_br_get(br); + wkq_err = au_wkq_nowait(reinit_br_wh, arg, sb, /*flags*/0); + if (unlikely(wkq_err)) { + atomic_dec(&br->br_wbr->wbr_wh_running); + au_br_put(br); + kfree(arg); + } + do_dec = 0; + } + +out: + if (do_dec) + atomic_dec(&br->br_wbr->wbr_wh_running); +} + +/* ---------------------------------------------------------------------- */ + +/* + * create the whiteout @wh. + */ +static int link_or_create_wh(struct super_block *sb, aufs_bindex_t bindex, + struct dentry *wh) +{ + int err; + struct path h_path = { + .dentry = wh + }; + struct au_branch *br; + struct au_wbr *wbr; + struct dentry *h_parent; + struct inode *h_dir, *delegated; + + h_parent = wh->d_parent; /* dir inode is locked */ + h_dir = d_inode(h_parent); + IMustLock(h_dir); + + br = au_sbr(sb, bindex); + h_path.mnt = au_br_mnt(br); + wbr = br->br_wbr; + wbr_wh_read_lock(wbr); + if (wbr->wbr_whbase) { + delegated = NULL; + err = vfsub_link(wbr->wbr_whbase, h_dir, &h_path, &delegated); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal link\n"); + iput(delegated); + } + if (!err || err != -EMLINK) + goto out; + + /* link count full. re-initialize br_whbase. */ + kick_reinit_br_wh(sb, br); + } + + /* return this error in this context */ + err = vfsub_create(h_dir, &h_path, WH_MASK, /*want_excl*/true); + if (!err) + au_fhsm_wrote(sb, bindex, /*force*/0); + +out: + wbr_wh_read_unlock(wbr); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* + * create or remove the diropq. + */ +static struct dentry *do_diropq(struct dentry *dentry, aufs_bindex_t bindex, + unsigned int flags) +{ + struct dentry *opq_dentry, *h_dentry; + struct super_block *sb; + struct au_branch *br; + int err; + + sb = dentry->d_sb; + br = au_sbr(sb, bindex); + h_dentry = au_h_dptr(dentry, bindex); + opq_dentry = vfsub_lkup_one(&diropq_name, h_dentry); + if (IS_ERR(opq_dentry)) + goto out; + + if (au_ftest_diropq(flags, CREATE)) { + err = link_or_create_wh(sb, bindex, opq_dentry); + if (!err) { + au_set_dbdiropq(dentry, bindex); + goto out; /* success */ + } + } else { + struct path tmp = { + .dentry = opq_dentry, + .mnt = au_br_mnt(br) + }; + err = do_unlink_wh(au_h_iptr(d_inode(dentry), bindex), &tmp); + if (!err) + au_set_dbdiropq(dentry, -1); + } + dput(opq_dentry); + opq_dentry = ERR_PTR(err); + +out: + return opq_dentry; +} + +struct do_diropq_args { + struct dentry **errp; + struct dentry *dentry; + aufs_bindex_t bindex; + unsigned int flags; +}; + +static void call_do_diropq(void *args) +{ + struct do_diropq_args *a = args; + *a->errp = do_diropq(a->dentry, a->bindex, a->flags); +} + +struct dentry *au_diropq_sio(struct dentry *dentry, aufs_bindex_t bindex, + unsigned int flags) +{ + struct dentry *diropq, *h_dentry; + + h_dentry = au_h_dptr(dentry, bindex); + if (!au_test_h_perm_sio(d_inode(h_dentry), MAY_EXEC | MAY_WRITE)) + diropq = do_diropq(dentry, bindex, flags); + else { + int wkq_err; + struct do_diropq_args args = { + .errp = &diropq, + .dentry = dentry, + .bindex = bindex, + .flags = flags + }; + + wkq_err = au_wkq_wait(call_do_diropq, &args); + if (unlikely(wkq_err)) + diropq = ERR_PTR(wkq_err); + } + + return diropq; +} + +/* ---------------------------------------------------------------------- */ + +/* + * lookup whiteout dentry. + * @h_parent: lower parent dentry which must exist and be locked + * @base_name: name of dentry which will be whiteouted + * returns dentry for whiteout. + */ +struct dentry *au_wh_lkup(struct dentry *h_parent, struct qstr *base_name, + struct au_branch *br) +{ + int err; + struct qstr wh_name; + struct dentry *wh_dentry; + + err = au_wh_name_alloc(&wh_name, base_name); + wh_dentry = ERR_PTR(err); + if (!err) { + wh_dentry = vfsub_lkup_one(&wh_name, h_parent); + kfree(wh_name.name); + } + return wh_dentry; +} + +/* + * link/create a whiteout for @dentry on @bindex. + */ +struct dentry *au_wh_create(struct dentry *dentry, aufs_bindex_t bindex, + struct dentry *h_parent) +{ + struct dentry *wh_dentry; + struct super_block *sb; + int err; + + sb = dentry->d_sb; + wh_dentry = au_wh_lkup(h_parent, &dentry->d_name, au_sbr(sb, bindex)); + if (!IS_ERR(wh_dentry) && d_is_negative(wh_dentry)) { + err = link_or_create_wh(sb, bindex, wh_dentry); + if (!err) { + au_set_dbwh(dentry, bindex); + au_fhsm_wrote(sb, bindex, /*force*/0); + } else { + dput(wh_dentry); + wh_dentry = ERR_PTR(err); + } + } + + return wh_dentry; +} + +/* ---------------------------------------------------------------------- */ + +/* Delete all whiteouts in this directory on branch bindex. */ +static int del_wh_children(struct dentry *h_dentry, struct au_nhash *whlist, + aufs_bindex_t bindex, struct au_branch *br) +{ + int err; + unsigned long ul, n; + struct qstr wh_name; + char *p; + struct hlist_head *head; + struct au_vdir_wh *pos; + struct au_vdir_destr *str; + + err = -ENOMEM; + p = (void *)__get_free_page(GFP_NOFS); + wh_name.name = p; + if (unlikely(!wh_name.name)) + goto out; + + err = 0; + memcpy(p, AUFS_WH_PFX, AUFS_WH_PFX_LEN); + p += AUFS_WH_PFX_LEN; + n = whlist->nh_num; + head = whlist->nh_head; + for (ul = 0; !err && ul < n; ul++, head++) { + hlist_for_each_entry(pos, head, wh_hash) { + if (pos->wh_bindex != bindex) + continue; + + str = &pos->wh_str; + if (str->len + AUFS_WH_PFX_LEN <= PATH_MAX) { + memcpy(p, str->name, str->len); + wh_name.len = AUFS_WH_PFX_LEN + str->len; + err = unlink_wh_name(h_dentry, &wh_name, br); + if (!err) + continue; + break; + } + AuIOErr("whiteout name too long %.*s\n", + str->len, str->name); + err = -EIO; + break; + } + } + free_page((unsigned long)wh_name.name); + +out: + return err; +} + +struct del_wh_children_args { + int *errp; + struct dentry *h_dentry; + struct au_nhash *whlist; + aufs_bindex_t bindex; + struct au_branch *br; +}; + +static void call_del_wh_children(void *args) +{ + struct del_wh_children_args *a = args; + *a->errp = del_wh_children(a->h_dentry, a->whlist, a->bindex, a->br); +} + +/* ---------------------------------------------------------------------- */ + +struct au_whtmp_rmdir *au_whtmp_rmdir_alloc(struct super_block *sb, gfp_t gfp) +{ + struct au_whtmp_rmdir *whtmp; + int err; + unsigned int rdhash; + + SiMustAnyLock(sb); + + whtmp = kzalloc(sizeof(*whtmp), gfp); + if (unlikely(!whtmp)) { + whtmp = ERR_PTR(-ENOMEM); + goto out; + } + + /* no estimation for dir size */ + rdhash = au_sbi(sb)->si_rdhash; + if (!rdhash) + rdhash = AUFS_RDHASH_DEF; + err = au_nhash_alloc(&whtmp->whlist, rdhash, gfp); + if (unlikely(err)) { + kfree(whtmp); + whtmp = ERR_PTR(err); + } + +out: + return whtmp; +} + +void au_whtmp_rmdir_free(struct au_whtmp_rmdir *whtmp) +{ + if (whtmp->br) + au_br_put(whtmp->br); + dput(whtmp->wh_dentry); + iput(whtmp->dir); + au_nhash_wh_free(&whtmp->whlist); + kfree(whtmp); +} + +/* + * rmdir the whiteouted temporary named dir @h_dentry. + * @whlist: whiteouted children. + */ +int au_whtmp_rmdir(struct inode *dir, aufs_bindex_t bindex, + struct dentry *wh_dentry, struct au_nhash *whlist) +{ + int err; + unsigned int h_nlink; + struct path h_tmp; + struct inode *wh_inode, *h_dir; + struct au_branch *br; + + h_dir = d_inode(wh_dentry->d_parent); /* dir inode is locked */ + IMustLock(h_dir); + + br = au_sbr(dir->i_sb, bindex); + wh_inode = d_inode(wh_dentry); + inode_lock_nested(wh_inode, AuLsc_I_CHILD); + + /* + * someone else might change some whiteouts while we were sleeping. + * it means this whlist may have an obsoleted entry. + */ + if (!au_test_h_perm_sio(wh_inode, MAY_EXEC | MAY_WRITE)) + err = del_wh_children(wh_dentry, whlist, bindex, br); + else { + int wkq_err; + struct del_wh_children_args args = { + .errp = &err, + .h_dentry = wh_dentry, + .whlist = whlist, + .bindex = bindex, + .br = br + }; + + wkq_err = au_wkq_wait(call_del_wh_children, &args); + if (unlikely(wkq_err)) + err = wkq_err; + } + inode_unlock(wh_inode); + + if (!err) { + h_tmp.dentry = wh_dentry; + h_tmp.mnt = au_br_mnt(br); + h_nlink = h_dir->i_nlink; + err = vfsub_rmdir(h_dir, &h_tmp); + /* some fs doesn't change the parent nlink in some cases */ + h_nlink -= h_dir->i_nlink; + } + + if (!err) { + if (au_ibtop(dir) == bindex) { + /* todo: dir->i_mutex is necessary */ + au_cpup_attr_timesizes(dir); + if (h_nlink) + vfsub_drop_nlink(dir); + } + return 0; /* success */ + } + + pr_warn("failed removing %pd(%d), ignored\n", wh_dentry, err); + return err; +} + +static void call_rmdir_whtmp(void *args) +{ + int err; + aufs_bindex_t bindex; + struct au_whtmp_rmdir *a = args; + struct super_block *sb; + struct dentry *h_parent; + struct inode *h_dir; + struct au_hinode *hdir; + + /* rmdir by nfsd may cause deadlock with this i_mutex */ + /* inode_lock(a->dir); */ + err = -EROFS; + sb = a->dir->i_sb; + si_read_lock(sb, !AuLock_FLUSH); + if (!au_br_writable(a->br->br_perm)) + goto out; + bindex = au_br_index(sb, a->br->br_id); + if (unlikely(bindex < 0)) + goto out; + + err = -EIO; + ii_write_lock_parent(a->dir); + h_parent = dget_parent(a->wh_dentry); + h_dir = d_inode(h_parent); + hdir = au_hi(a->dir, bindex); + err = vfsub_mnt_want_write(au_br_mnt(a->br)); + if (unlikely(err)) + goto out_mnt; + au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT); + err = au_h_verify(a->wh_dentry, au_opt_udba(sb), h_dir, h_parent, + a->br); + if (!err) + err = au_whtmp_rmdir(a->dir, bindex, a->wh_dentry, &a->whlist); + au_hn_inode_unlock(hdir); + vfsub_mnt_drop_write(au_br_mnt(a->br)); + +out_mnt: + dput(h_parent); + ii_write_unlock(a->dir); +out: + /* inode_unlock(a->dir); */ + au_whtmp_rmdir_free(a); + si_read_unlock(sb); + au_nwt_done(&au_sbi(sb)->si_nowait); + if (unlikely(err)) + AuIOErr("err %d\n", err); +} + +void au_whtmp_kick_rmdir(struct inode *dir, aufs_bindex_t bindex, + struct dentry *wh_dentry, struct au_whtmp_rmdir *args) +{ + int wkq_err; + struct super_block *sb; + + IMustLock(dir); + + /* all post-process will be done in do_rmdir_whtmp(). */ + sb = dir->i_sb; + args->dir = au_igrab(dir); + args->br = au_sbr(sb, bindex); + au_br_get(args->br); + args->wh_dentry = dget(wh_dentry); + wkq_err = au_wkq_nowait(call_rmdir_whtmp, args, sb, /*flags*/0); + if (unlikely(wkq_err)) { + pr_warn("rmdir error %pd (%d), ignored\n", wh_dentry, wkq_err); + au_whtmp_rmdir_free(args); + } +} diff --git a/fs/aufs/whout.h b/fs/aufs/whout.h new file mode 100644 index 00000000000..2bbc38ba372 --- /dev/null +++ b/fs/aufs/whout.h @@ -0,0 +1,86 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * whiteout for logical deletion and opaque directory + */ + +#ifndef __AUFS_WHOUT_H__ +#define __AUFS_WHOUT_H__ + +#ifdef __KERNEL__ + +#include "dir.h" + +/* whout.c */ +int au_wh_name_alloc(struct qstr *wh, const struct qstr *name); +int au_wh_test(struct dentry *h_parent, struct qstr *wh_name, int try_sio); +int au_diropq_test(struct dentry *h_dentry); +struct au_branch; +struct dentry *au_whtmp_lkup(struct dentry *h_parent, struct au_branch *br, + struct qstr *prefix); +int au_whtmp_ren(struct dentry *h_dentry, struct au_branch *br); +int au_wh_unlink_dentry(struct inode *h_dir, struct path *h_path, + struct dentry *dentry); +int au_wh_init(struct au_branch *br, struct super_block *sb); + +/* diropq flags */ +#define AuDiropq_CREATE 1 +#define au_ftest_diropq(flags, name) ((flags) & AuDiropq_##name) +#define au_fset_diropq(flags, name) \ + do { (flags) |= AuDiropq_##name; } while (0) +#define au_fclr_diropq(flags, name) \ + do { (flags) &= ~AuDiropq_##name; } while (0) + +struct dentry *au_diropq_sio(struct dentry *dentry, aufs_bindex_t bindex, + unsigned int flags); +struct dentry *au_wh_lkup(struct dentry *h_parent, struct qstr *base_name, + struct au_branch *br); +struct dentry *au_wh_create(struct dentry *dentry, aufs_bindex_t bindex, + struct dentry *h_parent); + +/* real rmdir for the whiteout-ed dir */ +struct au_whtmp_rmdir { + struct inode *dir; + struct au_branch *br; + struct dentry *wh_dentry; + struct au_nhash whlist; +}; + +struct au_whtmp_rmdir *au_whtmp_rmdir_alloc(struct super_block *sb, gfp_t gfp); +void au_whtmp_rmdir_free(struct au_whtmp_rmdir *whtmp); +int au_whtmp_rmdir(struct inode *dir, aufs_bindex_t bindex, + struct dentry *wh_dentry, struct au_nhash *whlist); +void au_whtmp_kick_rmdir(struct inode *dir, aufs_bindex_t bindex, + struct dentry *wh_dentry, struct au_whtmp_rmdir *args); + +/* ---------------------------------------------------------------------- */ + +static inline struct dentry *au_diropq_create(struct dentry *dentry, + aufs_bindex_t bindex) +{ + return au_diropq_sio(dentry, bindex, AuDiropq_CREATE); +} + +static inline int au_diropq_remove(struct dentry *dentry, aufs_bindex_t bindex) +{ + return PTR_ERR(au_diropq_sio(dentry, bindex, !AuDiropq_CREATE)); +} + +#endif /* __KERNEL__ */ +#endif /* __AUFS_WHOUT_H__ */ diff --git a/fs/aufs/wkq.c b/fs/aufs/wkq.c new file mode 100644 index 00000000000..4788ae25fbc --- /dev/null +++ b/fs/aufs/wkq.c @@ -0,0 +1,391 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * workqueue for asynchronous/super-io operations + * todo: try new dredential scheme + */ + +#include +#include "aufs.h" + +/* internal workqueue named AUFS_WKQ_NAME */ + +static struct workqueue_struct *au_wkq; + +struct au_wkinfo { + struct work_struct wk; + struct kobject *kobj; + + unsigned int flags; /* see wkq.h */ + + au_wkq_func_t func; + void *args; + +#ifdef CONFIG_LOCKDEP + int dont_check; + struct held_lock **hlock; +#endif + + struct completion *comp; +}; + +/* ---------------------------------------------------------------------- */ +/* + * Aufs passes some operations to the workqueue such as the internal copyup. + * This scheme looks rather unnatural for LOCKDEP debugging feature, since the + * job run by workqueue depends upon the locks acquired in the other task. + * Delegating a small operation to the workqueue, aufs passes its lockdep + * information too. And the job in the workqueue restores the info in order to + * pretend as if it acquired those locks. This is just to make LOCKDEP work + * correctly and expectedly. + */ + +#ifndef CONFIG_LOCKDEP +AuStubInt0(au_wkq_lockdep_alloc, struct au_wkinfo *wkinfo); +AuStubVoid(au_wkq_lockdep_free, struct au_wkinfo *wkinfo); +AuStubVoid(au_wkq_lockdep_pre, struct au_wkinfo *wkinfo); +AuStubVoid(au_wkq_lockdep_post, struct au_wkinfo *wkinfo); +AuStubVoid(au_wkq_lockdep_init, struct au_wkinfo *wkinfo); +#else +static void au_wkq_lockdep_init(struct au_wkinfo *wkinfo) +{ + wkinfo->hlock = NULL; + wkinfo->dont_check = 0; +} + +/* + * 1: matched + * 0: unmatched + */ +static int au_wkq_lockdep_test(struct lock_class_key *key, const char *name) +{ + static DEFINE_SPINLOCK(spin); + static struct { + char *name; + struct lock_class_key *key; + } a[] = { + { .name = "&sbinfo->si_rwsem" }, + { .name = "&finfo->fi_rwsem" }, + { .name = "&dinfo->di_rwsem" }, + { .name = "&iinfo->ii_rwsem" } + }; + static int set; + int i; + + /* lockless read from 'set.' see below */ + if (set == ARRAY_SIZE(a)) { + for (i = 0; i < ARRAY_SIZE(a); i++) + if (a[i].key == key) + goto match; + goto unmatch; + } + + spin_lock(&spin); + if (set) + for (i = 0; i < ARRAY_SIZE(a); i++) + if (a[i].key == key) { + spin_unlock(&spin); + goto match; + } + for (i = 0; i < ARRAY_SIZE(a); i++) { + if (a[i].key) { + if (unlikely(a[i].key == key)) { /* rare but possible */ + spin_unlock(&spin); + goto match; + } else + continue; + } + if (strstr(a[i].name, name)) { + /* + * the order of these three lines is important for the + * lockless read above. + */ + a[i].key = key; + spin_unlock(&spin); + set++; + /* AuDbg("%d, %s\n", set, name); */ + goto match; + } + } + spin_unlock(&spin); + goto unmatch; + +match: + return 1; +unmatch: + return 0; +} + +static int au_wkq_lockdep_alloc(struct au_wkinfo *wkinfo) +{ + int err, n; + struct task_struct *curr; + struct held_lock **hl, *held_locks, *p; + + err = 0; + curr = current; + wkinfo->dont_check = lockdep_recursing(curr); + if (wkinfo->dont_check) + goto out; + n = curr->lockdep_depth; + if (!n) + goto out; + + err = -ENOMEM; + wkinfo->hlock = kmalloc_array(n + 1, sizeof(*wkinfo->hlock), GFP_NOFS); + if (unlikely(!wkinfo->hlock)) + goto out; + + err = 0; +#if 0 + if (0 && au_debug_test()) /* left for debugging */ + lockdep_print_held_locks(curr); +#endif + held_locks = curr->held_locks; + hl = wkinfo->hlock; + while (n--) { + p = held_locks++; + if (au_wkq_lockdep_test(p->instance->key, p->instance->name)) + *hl++ = p; + } + *hl = NULL; + +out: + return err; +} + +static void au_wkq_lockdep_free(struct au_wkinfo *wkinfo) +{ + kfree(wkinfo->hlock); +} + +static void au_wkq_lockdep_pre(struct au_wkinfo *wkinfo) +{ + struct held_lock *p, **hl = wkinfo->hlock; + int subclass; + + if (wkinfo->dont_check) + lockdep_off(); + if (!hl) + return; + while ((p = *hl++)) { /* assignment */ + subclass = lockdep_hlock_class(p)->subclass; + /* AuDbg("%s, %d\n", p->instance->name, subclass); */ + if (p->read) + rwsem_acquire_read(p->instance, subclass, 0, + /*p->acquire_ip*/_RET_IP_); + else + rwsem_acquire(p->instance, subclass, 0, + /*p->acquire_ip*/_RET_IP_); + } +} + +static void au_wkq_lockdep_post(struct au_wkinfo *wkinfo) +{ + struct held_lock *p, **hl = wkinfo->hlock; + + if (wkinfo->dont_check) + lockdep_on(); + if (!hl) + return; + while ((p = *hl++)) /* assignment */ + rwsem_release(p->instance, 0, /*p->acquire_ip*/_RET_IP_); +} +#endif + +static void wkq_func(struct work_struct *wk) +{ + struct au_wkinfo *wkinfo = container_of(wk, struct au_wkinfo, wk); + + AuDebugOn(!uid_eq(current_fsuid(), GLOBAL_ROOT_UID)); + AuDebugOn(rlimit(RLIMIT_FSIZE) != RLIM_INFINITY); + + au_wkq_lockdep_pre(wkinfo); + wkinfo->func(wkinfo->args); + au_wkq_lockdep_post(wkinfo); + if (au_ftest_wkq(wkinfo->flags, WAIT)) + complete(wkinfo->comp); + else { + kobject_put(wkinfo->kobj); + module_put(THIS_MODULE); /* todo: ?? */ + kfree(wkinfo); + } +} + +/* + * Since struct completion is large, try allocating it dynamically. + */ +#if 1 /* defined(CONFIG_4KSTACKS) || defined(AuTest4KSTACKS) */ +#define AuWkqCompDeclare(name) struct completion *comp = NULL + +static int au_wkq_comp_alloc(struct au_wkinfo *wkinfo, struct completion **comp) +{ + *comp = kmalloc(sizeof(**comp), GFP_NOFS); + if (*comp) { + init_completion(*comp); + wkinfo->comp = *comp; + return 0; + } + return -ENOMEM; +} + +static void au_wkq_comp_free(struct completion *comp) +{ + kfree(comp); +} + +#else + +/* no braces */ +#define AuWkqCompDeclare(name) \ + DECLARE_COMPLETION_ONSTACK(_ ## name); \ + struct completion *comp = &_ ## name + +static int au_wkq_comp_alloc(struct au_wkinfo *wkinfo, struct completion **comp) +{ + wkinfo->comp = *comp; + return 0; +} + +static void au_wkq_comp_free(struct completion *comp __maybe_unused) +{ + /* empty */ +} +#endif /* 4KSTACKS */ + +static void au_wkq_run(struct au_wkinfo *wkinfo) +{ + if (au_ftest_wkq(wkinfo->flags, NEST)) { + if (au_wkq_test()) { + AuWarn1("wkq from wkq, unless silly-rename on NFS," + " due to a dead dir by UDBA?\n"); + AuDebugOn(au_ftest_wkq(wkinfo->flags, WAIT)); + } + } else + au_dbg_verify_kthread(); + + if (au_ftest_wkq(wkinfo->flags, WAIT)) { + INIT_WORK_ONSTACK(&wkinfo->wk, wkq_func); + queue_work(au_wkq, &wkinfo->wk); + } else { + INIT_WORK(&wkinfo->wk, wkq_func); + schedule_work(&wkinfo->wk); + } +} + +/* + * Be careful. It is easy to make deadlock happen. + * processA: lock, wkq and wait + * processB: wkq and wait, lock in wkq + * --> deadlock + */ +int au_wkq_do_wait(unsigned int flags, au_wkq_func_t func, void *args) +{ + int err; + AuWkqCompDeclare(comp); + struct au_wkinfo wkinfo = { + .flags = flags, + .func = func, + .args = args + }; + + err = au_wkq_comp_alloc(&wkinfo, &comp); + if (unlikely(err)) + goto out; + err = au_wkq_lockdep_alloc(&wkinfo); + if (unlikely(err)) + goto out_comp; + if (!err) { + au_wkq_run(&wkinfo); + /* no timeout, no interrupt */ + wait_for_completion(wkinfo.comp); + } + au_wkq_lockdep_free(&wkinfo); + +out_comp: + au_wkq_comp_free(comp); +out: + destroy_work_on_stack(&wkinfo.wk); + return err; +} + +/* + * Note: dget/dput() in func for aufs dentries are not supported. It will be a + * problem in a concurrent umounting. + */ +int au_wkq_nowait(au_wkq_func_t func, void *args, struct super_block *sb, + unsigned int flags) +{ + int err; + struct au_wkinfo *wkinfo; + + atomic_inc(&au_sbi(sb)->si_nowait.nw_len); + + /* + * wkq_func() must free this wkinfo. + * it highly depends upon the implementation of workqueue. + */ + err = 0; + wkinfo = kmalloc(sizeof(*wkinfo), GFP_NOFS); + if (wkinfo) { + wkinfo->kobj = &au_sbi(sb)->si_kobj; + wkinfo->flags = flags & ~AuWkq_WAIT; + wkinfo->func = func; + wkinfo->args = args; + wkinfo->comp = NULL; + au_wkq_lockdep_init(wkinfo); + kobject_get(wkinfo->kobj); + __module_get(THIS_MODULE); /* todo: ?? */ + + au_wkq_run(wkinfo); + } else { + err = -ENOMEM; + au_nwt_done(&au_sbi(sb)->si_nowait); + } + + return err; +} + +/* ---------------------------------------------------------------------- */ + +void au_nwt_init(struct au_nowait_tasks *nwt) +{ + atomic_set(&nwt->nw_len, 0); + /* smp_mb(); */ /* atomic_set */ + init_waitqueue_head(&nwt->nw_wq); +} + +void au_wkq_fin(void) +{ + destroy_workqueue(au_wkq); +} + +int __init au_wkq_init(void) +{ + int err; + + err = 0; + au_wkq = alloc_workqueue(AUFS_WKQ_NAME, 0, WQ_DFL_ACTIVE); + if (IS_ERR(au_wkq)) + err = PTR_ERR(au_wkq); + else if (!au_wkq) + err = -ENOMEM; + + return err; +} diff --git a/fs/aufs/wkq.h b/fs/aufs/wkq.h new file mode 100644 index 00000000000..acfccd5092b --- /dev/null +++ b/fs/aufs/wkq.h @@ -0,0 +1,94 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * workqueue for asynchronous/super-io operations + * todo: try new credentials management scheme + */ + +#ifndef __AUFS_WKQ_H__ +#define __AUFS_WKQ_H__ + +#ifdef __KERNEL__ + +#include + +struct super_block; + +/* ---------------------------------------------------------------------- */ + +/* + * in the next operation, wait for the 'nowait' tasks in system-wide workqueue + */ +struct au_nowait_tasks { + atomic_t nw_len; + wait_queue_head_t nw_wq; +}; + +/* ---------------------------------------------------------------------- */ + +typedef void (*au_wkq_func_t)(void *args); + +/* wkq flags */ +#define AuWkq_WAIT 1 +#define AuWkq_NEST (1 << 1) +#define au_ftest_wkq(flags, name) ((flags) & AuWkq_##name) +#define au_fset_wkq(flags, name) \ + do { (flags) |= AuWkq_##name; } while (0) +#define au_fclr_wkq(flags, name) \ + do { (flags) &= ~AuWkq_##name; } while (0) + +#ifndef CONFIG_AUFS_HNOTIFY +#undef AuWkq_NEST +#define AuWkq_NEST 0 +#endif + +/* wkq.c */ +int au_wkq_do_wait(unsigned int flags, au_wkq_func_t func, void *args); +int au_wkq_nowait(au_wkq_func_t func, void *args, struct super_block *sb, + unsigned int flags); +void au_nwt_init(struct au_nowait_tasks *nwt); +int __init au_wkq_init(void); +void au_wkq_fin(void); + +/* ---------------------------------------------------------------------- */ + +static inline int au_wkq_test(void) +{ + return current->flags & PF_WQ_WORKER; +} + +static inline int au_wkq_wait(au_wkq_func_t func, void *args) +{ + return au_wkq_do_wait(AuWkq_WAIT, func, args); +} + +static inline void au_nwt_done(struct au_nowait_tasks *nwt) +{ + if (atomic_dec_and_test(&nwt->nw_len)) + wake_up_all(&nwt->nw_wq); +} + +static inline int au_nwt_flush(struct au_nowait_tasks *nwt) +{ + wait_event(nwt->nw_wq, !atomic_read(&nwt->nw_len)); + return 0; +} + +#endif /* __KERNEL__ */ +#endif /* __AUFS_WKQ_H__ */ diff --git a/fs/aufs/xattr.c b/fs/aufs/xattr.c new file mode 100644 index 00000000000..70b891716e4 --- /dev/null +++ b/fs/aufs/xattr.c @@ -0,0 +1,356 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2014-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * handling xattr functions + */ + +#include +#include +#include +#include "aufs.h" + +static int au_xattr_ignore(int err, char *name, unsigned int ignore_flags) +{ + if (!ignore_flags) + goto out; + switch (err) { + case -ENOMEM: + case -EDQUOT: + goto out; + } + + if ((ignore_flags & AuBrAttr_ICEX) == AuBrAttr_ICEX) { + err = 0; + goto out; + } + +#define cmp(brattr, prefix) do { \ + if (!strncmp(name, XATTR_##prefix##_PREFIX, \ + XATTR_##prefix##_PREFIX_LEN)) { \ + if (ignore_flags & AuBrAttr_ICEX_##brattr) \ + err = 0; \ + goto out; \ + } \ + } while (0) + + cmp(SEC, SECURITY); + cmp(SYS, SYSTEM); + cmp(TR, TRUSTED); + cmp(USR, USER); +#undef cmp + + if (ignore_flags & AuBrAttr_ICEX_OTH) + err = 0; + +out: + return err; +} + +static const int au_xattr_out_of_list = AuBrAttr_ICEX_OTH << 1; + +static int au_do_cpup_xattr(struct dentry *h_dst, struct dentry *h_src, + char *name, char **buf, unsigned int ignore_flags, + unsigned int verbose) +{ + int err; + ssize_t ssz; + struct inode *h_idst; + + ssz = vfs_getxattr_alloc(h_src, name, buf, 0, GFP_NOFS); + err = ssz; + if (unlikely(err <= 0)) { + if (err == -ENODATA + || (err == -EOPNOTSUPP + && ((ignore_flags & au_xattr_out_of_list) + || (au_test_nfs_noacl(d_inode(h_src)) + && (!strcmp(name, XATTR_NAME_POSIX_ACL_ACCESS) + || !strcmp(name, + XATTR_NAME_POSIX_ACL_DEFAULT)))) + )) + err = 0; + if (err && (verbose || au_debug_test())) + pr_err("%s, err %d\n", name, err); + goto out; + } + + /* unlock it temporary */ + h_idst = d_inode(h_dst); + inode_unlock(h_idst); + err = vfsub_setxattr(h_dst, name, *buf, ssz, /*flags*/0); + inode_lock_nested(h_idst, AuLsc_I_CHILD2); + if (unlikely(err)) { + if (verbose || au_debug_test()) + pr_err("%s, err %d\n", name, err); + err = au_xattr_ignore(err, name, ignore_flags); + } + +out: + return err; +} + +int au_cpup_xattr(struct dentry *h_dst, struct dentry *h_src, int ignore_flags, + unsigned int verbose) +{ + int err, unlocked, acl_access, acl_default; + ssize_t ssz; + struct inode *h_isrc, *h_idst; + char *value, *p, *o, *e; + + /* try stopping to update the source inode while we are referencing */ + /* there should not be the parent-child relationship between them */ + h_isrc = d_inode(h_src); + h_idst = d_inode(h_dst); + inode_unlock(h_idst); + inode_lock_shared_nested(h_isrc, AuLsc_I_CHILD); + inode_lock_nested(h_idst, AuLsc_I_CHILD2); + unlocked = 0; + + /* some filesystems don't list POSIX ACL, for example tmpfs */ + ssz = vfs_listxattr(h_src, NULL, 0); + err = ssz; + if (unlikely(err < 0)) { + AuTraceErr(err); + if (err == -ENODATA + || err == -EOPNOTSUPP) + err = 0; /* ignore */ + goto out; + } + + err = 0; + p = NULL; + o = NULL; + if (ssz) { + err = -ENOMEM; + p = kmalloc(ssz, GFP_NOFS); + o = p; + if (unlikely(!p)) + goto out; + err = vfs_listxattr(h_src, p, ssz); + } + inode_unlock_shared(h_isrc); + unlocked = 1; + AuDbg("err %d, ssz %zd\n", err, ssz); + if (unlikely(err < 0)) + goto out_free; + + err = 0; + e = p + ssz; + value = NULL; + acl_access = 0; + acl_default = 0; + while (!err && p < e) { + acl_access |= !strncmp(p, XATTR_NAME_POSIX_ACL_ACCESS, + sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1); + acl_default |= !strncmp(p, XATTR_NAME_POSIX_ACL_DEFAULT, + sizeof(XATTR_NAME_POSIX_ACL_DEFAULT) + - 1); + err = au_do_cpup_xattr(h_dst, h_src, p, &value, ignore_flags, + verbose); + p += strlen(p) + 1; + } + AuTraceErr(err); + ignore_flags |= au_xattr_out_of_list; + if (!err && !acl_access) { + err = au_do_cpup_xattr(h_dst, h_src, + XATTR_NAME_POSIX_ACL_ACCESS, &value, + ignore_flags, verbose); + AuTraceErr(err); + } + if (!err && !acl_default) { + err = au_do_cpup_xattr(h_dst, h_src, + XATTR_NAME_POSIX_ACL_DEFAULT, &value, + ignore_flags, verbose); + AuTraceErr(err); + } + + kfree(value); + +out_free: + kfree(o); +out: + if (!unlocked) + inode_unlock_shared(h_isrc); + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int au_smack_reentering(struct super_block *sb) +{ +#if IS_ENABLED(CONFIG_SECURITY_SMACK) + /* + * as a part of lookup, smack_d_instantiate() is called, and it calls + * i_op->getxattr(). ouch. + */ + return si_pid_test(sb); +#else + return 0; +#endif +} + +enum { + AU_XATTR_LIST, + AU_XATTR_GET +}; + +struct au_lgxattr { + int type; + union { + struct { + char *list; + size_t size; + } list; + struct { + const char *name; + void *value; + size_t size; + } get; + } u; +}; + +static ssize_t au_lgxattr(struct dentry *dentry, struct au_lgxattr *arg) +{ + ssize_t err; + int reenter; + struct path h_path; + struct super_block *sb; + + sb = dentry->d_sb; + reenter = au_smack_reentering(sb); + if (!reenter) { + err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM); + if (unlikely(err)) + goto out; + } + err = au_h_path_getattr(dentry, /*force*/1, &h_path, reenter); + if (unlikely(err)) + goto out_si; + if (unlikely(!h_path.dentry)) + /* illegally overlapped or something */ + goto out_di; /* pretending success */ + + /* always topmost entry only */ + switch (arg->type) { + case AU_XATTR_LIST: + err = vfs_listxattr(h_path.dentry, + arg->u.list.list, arg->u.list.size); + break; + case AU_XATTR_GET: + AuDebugOn(d_is_negative(h_path.dentry)); + err = vfs_getxattr(h_path.dentry, + arg->u.get.name, arg->u.get.value, + arg->u.get.size); + break; + } + +out_di: + if (!reenter) + di_read_unlock(dentry, AuLock_IR); +out_si: + if (!reenter) + si_read_unlock(sb); +out: + AuTraceErr(err); + return err; +} + +ssize_t aufs_listxattr(struct dentry *dentry, char *list, size_t size) +{ + struct au_lgxattr arg = { + .type = AU_XATTR_LIST, + .u.list = { + .list = list, + .size = size + }, + }; + + return au_lgxattr(dentry, &arg); +} + +static ssize_t au_getxattr(struct dentry *dentry, + struct inode *inode __maybe_unused, + const char *name, void *value, size_t size) +{ + struct au_lgxattr arg = { + .type = AU_XATTR_GET, + .u.get = { + .name = name, + .value = value, + .size = size + }, + }; + + return au_lgxattr(dentry, &arg); +} + +static int au_setxattr(struct dentry *dentry, struct inode *inode, + const char *name, const void *value, size_t size, + int flags) +{ + struct au_sxattr arg = { + .type = AU_XATTR_SET, + .u.set = { + .name = name, + .value = value, + .size = size, + .flags = flags + }, + }; + + return au_sxattr(dentry, inode, &arg); +} + +/* ---------------------------------------------------------------------- */ + +static int au_xattr_get(const struct xattr_handler *handler, + struct dentry *dentry, struct inode *inode, + const char *name, void *buffer, size_t size) +{ + return au_getxattr(dentry, inode, name, buffer, size); +} + +static int au_xattr_set(const struct xattr_handler *handler, + struct dentry *dentry, struct inode *inode, + const char *name, const void *value, size_t size, + int flags) +{ + return au_setxattr(dentry, inode, name, value, size, flags); +} + +static const struct xattr_handler au_xattr_handler = { + .name = "", + .prefix = "", + .get = au_xattr_get, + .set = au_xattr_set +}; + +static const struct xattr_handler *au_xattr_handlers[] = { +#ifdef CONFIG_FS_POSIX_ACL + &posix_acl_access_xattr_handler, + &posix_acl_default_xattr_handler, +#endif + &au_xattr_handler, /* must be last */ + NULL +}; + +void au_xattr_init(struct super_block *sb) +{ + sb->s_xattr = au_xattr_handlers; +} diff --git a/fs/aufs/xino.c b/fs/aufs/xino.c new file mode 100644 index 00000000000..67b1a6aab0b --- /dev/null +++ b/fs/aufs/xino.c @@ -0,0 +1,1593 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * external inode number translation table and bitmap + * + * things to consider + * - the lifetime + * + au_xino object + * + XINO files (xino, xib, xigen) + * + dynamic debugfs entries (xiN) + * + static debugfs entries (xib, xigen) + * + static sysfs entry (xi_path) + * - several entry points to handle them. + * + mount(2) without xino option (default) + * + mount(2) with xino option + * + mount(2) with noxino option + * + umount(2) + * + remount with add/del branches + * + remount with xino/noxino options + */ + +#include +#include +#include "aufs.h" + +static aufs_bindex_t sbr_find_shared(struct super_block *sb, aufs_bindex_t btop, + aufs_bindex_t bbot, + struct super_block *h_sb) +{ + /* todo: try binary-search if the branches are many */ + for (; btop <= bbot; btop++) + if (h_sb == au_sbr_sb(sb, btop)) + return btop; + return -1; +} + +/* + * find another branch who is on the same filesystem of the specified + * branch{@btgt}. search until @bbot. + */ +static aufs_bindex_t is_sb_shared(struct super_block *sb, aufs_bindex_t btgt, + aufs_bindex_t bbot) +{ + aufs_bindex_t bindex; + struct super_block *tgt_sb; + + tgt_sb = au_sbr_sb(sb, btgt); + bindex = sbr_find_shared(sb, /*btop*/0, btgt - 1, tgt_sb); + if (bindex < 0) + bindex = sbr_find_shared(sb, btgt + 1, bbot, tgt_sb); + + return bindex; +} + +/* ---------------------------------------------------------------------- */ + +/* + * stop unnecessary notify events at creating xino files + */ +struct au_xino_lock_dir { + struct au_hinode *hdir; + struct dentry *parent; + struct inode *dir; +}; + +static struct dentry *au_dget_parent_lock(struct dentry *dentry, + unsigned int lsc) +{ + struct dentry *parent; + struct inode *dir; + + parent = dget_parent(dentry); + dir = d_inode(parent); + inode_lock_nested(dir, lsc); +#if 0 /* it should not happen */ + spin_lock(&dentry->d_lock); + if (unlikely(dentry->d_parent != parent)) { + spin_unlock(&dentry->d_lock); + inode_unlock(dir); + dput(parent); + parent = NULL; + goto out; + } + spin_unlock(&dentry->d_lock); + +out: +#endif + return parent; +} + +static void au_xino_lock_dir(struct super_block *sb, struct path *xipath, + struct au_xino_lock_dir *ldir) +{ + aufs_bindex_t brid, bindex; + + ldir->hdir = NULL; + bindex = -1; + brid = au_xino_brid(sb); + if (brid >= 0) + bindex = au_br_index(sb, brid); + if (bindex >= 0) { + /* rw branch root */ + ldir->hdir = au_hi(d_inode(sb->s_root), bindex); + au_hn_inode_lock_nested(ldir->hdir, AuLsc_I_PARENT); + } else { + /* other */ + ldir->parent = au_dget_parent_lock(xipath->dentry, + AuLsc_I_PARENT); + ldir->dir = d_inode(ldir->parent); + } +} + +static void au_xino_unlock_dir(struct au_xino_lock_dir *ldir) +{ + if (ldir->hdir) + au_hn_inode_unlock(ldir->hdir); + else { + inode_unlock(ldir->dir); + dput(ldir->parent); + } +} + +/* ---------------------------------------------------------------------- */ + +/* + * create and set a new xino file + */ +struct file *au_xino_create(struct super_block *sb, char *fpath, int silent) +{ + struct file *file; + struct dentry *h_parent, *d; + struct inode *h_dir, *inode; + int err; + + /* + * at mount-time, and the xino file is the default path, + * hnotify is disabled so we have no notify events to ignore. + * when a user specified the xino, we cannot get au_hdir to be ignored. + */ + file = vfsub_filp_open(fpath, O_RDWR | O_CREAT | O_EXCL | O_LARGEFILE + /* | __FMODE_NONOTIFY */, + 0666); + if (IS_ERR(file)) { + if (!silent) + pr_err("open %s(%ld)\n", fpath, PTR_ERR(file)); + return file; + } + + /* keep file count */ + err = 0; + d = file->f_path.dentry; + h_parent = au_dget_parent_lock(d, AuLsc_I_PARENT); + /* mnt_want_write() is unnecessary here */ + h_dir = d_inode(h_parent); + inode = file_inode(file); + /* no delegation since it is just created */ + if (inode->i_nlink) + err = vfsub_unlink(h_dir, &file->f_path, /*delegated*/NULL, + /*force*/0); + inode_unlock(h_dir); + dput(h_parent); + if (unlikely(err)) { + if (!silent) + pr_err("unlink %s(%d)\n", fpath, err); + goto out; + } + + err = -EINVAL; + if (unlikely(sb == d->d_sb)) { + if (!silent) + pr_err("%s must be outside\n", fpath); + goto out; + } + if (unlikely(au_test_fs_bad_xino(d->d_sb))) { + if (!silent) + pr_err("xino doesn't support %s(%s)\n", + fpath, au_sbtype(d->d_sb)); + goto out; + } + return file; /* success */ + +out: + fput(file); + file = ERR_PTR(err); + return file; +} + +/* + * create a new xinofile at the same place/path as @base. + */ +struct file *au_xino_create2(struct super_block *sb, struct path *base, + struct file *copy_src) +{ + struct file *file; + struct dentry *dentry, *parent; + struct inode *dir, *delegated; + struct qstr *name; + struct path path; + int err, do_unlock; + struct au_xino_lock_dir ldir; + + do_unlock = 1; + au_xino_lock_dir(sb, base, &ldir); + dentry = base->dentry; + parent = dentry->d_parent; /* dir inode is locked */ + dir = d_inode(parent); + IMustLock(dir); + + name = &dentry->d_name; + path.dentry = vfsub_lookup_one_len(name->name, parent, name->len); + if (IS_ERR(path.dentry)) { + file = (void *)path.dentry; + pr_err("%pd lookup err %ld\n", dentry, PTR_ERR(path.dentry)); + goto out; + } + + /* no need to mnt_want_write() since we call dentry_open() later */ + err = vfs_create(dir, path.dentry, 0666, NULL); + if (unlikely(err)) { + file = ERR_PTR(err); + pr_err("%pd create err %d\n", dentry, err); + goto out_dput; + } + + path.mnt = base->mnt; + file = vfsub_dentry_open(&path, + O_RDWR | O_CREAT | O_EXCL | O_LARGEFILE + /* | __FMODE_NONOTIFY */); + if (IS_ERR(file)) { + pr_err("%pd open err %ld\n", dentry, PTR_ERR(file)); + goto out_dput; + } + + delegated = NULL; + err = vfsub_unlink(dir, &file->f_path, &delegated, /*force*/0); + au_xino_unlock_dir(&ldir); + do_unlock = 0; + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal unlink\n"); + iput(delegated); + } + if (unlikely(err)) { + pr_err("%pd unlink err %d\n", dentry, err); + goto out_fput; + } + + if (copy_src) { + /* no one can touch copy_src xino */ + err = au_copy_file(file, copy_src, vfsub_f_size_read(copy_src)); + if (unlikely(err)) { + pr_err("%pd copy err %d\n", dentry, err); + goto out_fput; + } + } + goto out_dput; /* success */ + +out_fput: + fput(file); + file = ERR_PTR(err); +out_dput: + dput(path.dentry); +out: + if (do_unlock) + au_xino_unlock_dir(&ldir); + return file; +} + +/* ---------------------------------------------------------------------- */ + +/* + * truncate xino files + */ +int au_xino_trunc(struct super_block *sb, aufs_bindex_t bindex) +{ + int err; + unsigned long jiffy; + blkcnt_t blocks; + aufs_bindex_t bbot; + struct kstatfs *st; + struct au_branch *br; + struct file *new_xino, *file; + struct path *path; + + err = -ENOMEM; + st = kmalloc(sizeof(*st), GFP_NOFS); + if (unlikely(!st)) + goto out; + + err = -EINVAL; + bbot = au_sbbot(sb); + if (unlikely(bindex < 0 || bbot < bindex)) + goto out_st; + br = au_sbr(sb, bindex); + file = au_xino_file(br); + if (!file) + goto out_st; + + path = &file->f_path; + err = vfs_statfs(path, st); + if (unlikely(err)) + AuErr1("statfs err %d, ignored\n", err); + jiffy = jiffies; + blocks = file_inode(file)->i_blocks; + pr_info("begin truncating xino(b%d), ib%llu, %llu/%llu free blks\n", + bindex, (u64)blocks, st->f_bfree, st->f_blocks); + + new_xino = au_xino_create2(sb, path, file); + err = PTR_ERR(new_xino); + if (IS_ERR(new_xino)) { + pr_err("err %d, ignored\n", err); + goto out_st; + } + err = 0; + au_xino_file_set(br, new_xino); + + err = vfs_statfs(&new_xino->f_path, st); + if (!err) { + pr_info("end truncating xino(b%d), ib%llu, %llu/%llu free blks\n", + bindex, (u64)file_inode(new_xino)->i_blocks, + st->f_bfree, st->f_blocks); + if (file_inode(new_xino)->i_blocks < blocks) + au_sbi(sb)->si_xino_jiffy = jiffy; + } else + AuErr1("statfs err %d, ignored\n", err); + fput(new_xino); + +out_st: + kfree(st); +out: + return err; +} + +struct xino_do_trunc_args { + struct super_block *sb; + struct au_branch *br; +}; + +static void xino_do_trunc(void *_args) +{ + struct xino_do_trunc_args *args = _args; + struct super_block *sb; + struct au_branch *br; + struct inode *dir; + int err; + aufs_bindex_t bindex; + + err = 0; + sb = args->sb; + dir = d_inode(sb->s_root); + br = args->br; + + si_noflush_write_lock(sb); + ii_read_lock_parent(dir); + bindex = au_br_index(sb, br->br_id); + err = au_xino_trunc(sb, bindex); + ii_read_unlock(dir); + if (unlikely(err)) + pr_warn("err b%d, (%d)\n", bindex, err); + atomic_dec(&br->br_xino->xi_truncating); + au_br_put(br); + si_write_unlock(sb); + au_nwt_done(&au_sbi(sb)->si_nowait); + kfree(args); +} + +static int xino_trunc_test(struct super_block *sb, struct au_branch *br) +{ + int err; + struct kstatfs st; + struct au_sbinfo *sbinfo; + struct file *file; + + /* todo: si_xino_expire and the ratio should be customizable */ + sbinfo = au_sbi(sb); + if (time_before(jiffies, + sbinfo->si_xino_jiffy + sbinfo->si_xino_expire)) + return 0; + + /* truncation border */ + file = au_xino_file(br); + AuDebugOn(!file); + err = vfs_statfs(&file->f_path, &st); + if (unlikely(err)) { + AuErr1("statfs err %d, ignored\n", err); + return 0; + } + if (div64_u64(st.f_bfree * 100, st.f_blocks) >= AUFS_XINO_DEF_TRUNC) + return 0; + + return 1; +} + +static void xino_try_trunc(struct super_block *sb, struct au_branch *br) +{ + struct xino_do_trunc_args *args; + int wkq_err; + + if (!xino_trunc_test(sb, br)) + return; + + if (atomic_inc_return(&br->br_xino->xi_truncating) > 1) + goto out; + + /* lock and kfree() will be called in trunc_xino() */ + args = kmalloc(sizeof(*args), GFP_NOFS); + if (unlikely(!args)) { + AuErr1("no memory\n"); + goto out; + } + + au_br_get(br); + args->sb = sb; + args->br = br; + wkq_err = au_wkq_nowait(xino_do_trunc, args, sb, /*flags*/0); + if (!wkq_err) + return; /* success */ + + pr_err("wkq %d\n", wkq_err); + au_br_put(br); + kfree(args); + +out: + atomic_dec(&br->br_xino->xi_truncating); +} + +/* ---------------------------------------------------------------------- */ + +/* + * read @ino from xinofile for the specified branch{@sb, @bindex} + * at the position of @h_ino. + */ +int au_xino_read(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino, + ino_t *ino) +{ + int err; + ssize_t sz; + loff_t pos; + struct au_branch *br; + struct file *file; + struct au_sbinfo *sbinfo; + + *ino = 0; + if (!au_opt_test(au_mntflags(sb), XINO)) + return 0; /* no xino */ + + err = 0; + sbinfo = au_sbi(sb); + pos = h_ino; + if (unlikely(au_loff_max / sizeof(*ino) - 1 < pos)) { + AuIOErr1("too large hi%lu\n", (unsigned long)h_ino); + return -EFBIG; + } + pos *= sizeof(*ino); + + br = au_sbr(sb, bindex); + file = au_xino_file(br); + if (vfsub_f_size_read(file) < pos + sizeof(*ino)) + return 0; /* no ino */ + + sz = xino_fread(sbinfo->si_xread, file, ino, sizeof(*ino), &pos); + if (sz == sizeof(*ino)) + return 0; /* success */ + + err = sz; + if (unlikely(sz >= 0)) { + err = -EIO; + AuIOErr("xino read error (%zd)\n", sz); + } + + return err; +} + +static int au_xino_do_write(vfs_writef_t write, struct file *file, + ino_t h_ino, ino_t ino) +{ + loff_t pos; + ssize_t sz; + + pos = h_ino; + if (unlikely(au_loff_max / sizeof(ino) - 1 < pos)) { + AuIOErr1("too large hi%lu\n", (unsigned long)h_ino); + return -EFBIG; + } + pos *= sizeof(ino); + sz = xino_fwrite(write, file, &ino, sizeof(ino), &pos); + if (sz == sizeof(ino)) + return 0; /* success */ + + AuIOErr("write failed (%zd)\n", sz); + return -EIO; +} + +/* + * write @ino to the xinofile for the specified branch{@sb, @bindex} + * at the position of @h_ino. + * even if @ino is zero, it is written to the xinofile and means no entry. + * if the size of the xino file on a specific filesystem exceeds the watermark, + * try truncating it. + */ +int au_xino_write(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino, + ino_t ino) +{ + int err; + unsigned int mnt_flags; + struct au_branch *br; + + BUILD_BUG_ON(sizeof(long long) != sizeof(au_loff_max) + || ((loff_t)-1) > 0); + SiMustAnyLock(sb); + + mnt_flags = au_mntflags(sb); + if (!au_opt_test(mnt_flags, XINO)) + return 0; + + br = au_sbr(sb, bindex); + err = au_xino_do_write(au_sbi(sb)->si_xwrite, au_xino_file(br), h_ino, + ino); + if (!err) { + if (au_opt_test(mnt_flags, TRUNC_XINO) + && au_test_fs_trunc_xino(au_br_sb(br))) + xino_try_trunc(sb, br); + return 0; /* success */ + } + + AuIOErr("write failed (%d)\n", err); + return -EIO; +} + +static ssize_t xino_fread_wkq(vfs_readf_t func, struct file *file, void *buf, + size_t size, loff_t *pos); + +/* todo: unnecessary to support mmap_sem since kernel-space? */ +ssize_t xino_fread(vfs_readf_t func, struct file *file, void *kbuf, size_t size, + loff_t *pos) +{ + ssize_t err; + mm_segment_t oldfs; + union { + void *k; + char __user *u; + } buf; + int i; + const int prevent_endless = 10; + + i = 0; + buf.k = kbuf; + oldfs = get_fs(); + set_fs(KERNEL_DS); + do { + err = func(file, buf.u, size, pos); + if (err == -EINTR + && !au_wkq_test() + && fatal_signal_pending(current)) { + set_fs(oldfs); + err = xino_fread_wkq(func, file, kbuf, size, pos); + BUG_ON(err == -EINTR); + oldfs = get_fs(); + set_fs(KERNEL_DS); + } + } while (i++ < prevent_endless + && (err == -EAGAIN || err == -EINTR)); + set_fs(oldfs); + +#if 0 /* reserved for future use */ + if (err > 0) + fsnotify_access(file->f_path.dentry); +#endif + + return err; +} + +struct xino_fread_args { + ssize_t *errp; + vfs_readf_t func; + struct file *file; + void *buf; + size_t size; + loff_t *pos; +}; + +static void call_xino_fread(void *args) +{ + struct xino_fread_args *a = args; + *a->errp = xino_fread(a->func, a->file, a->buf, a->size, a->pos); +} + +static ssize_t xino_fread_wkq(vfs_readf_t func, struct file *file, void *buf, + size_t size, loff_t *pos) +{ + ssize_t err; + int wkq_err; + struct xino_fread_args args = { + .errp = &err, + .func = func, + .file = file, + .buf = buf, + .size = size, + .pos = pos + }; + + wkq_err = au_wkq_wait(call_xino_fread, &args); + if (unlikely(wkq_err)) + err = wkq_err; + + return err; +} + +static ssize_t xino_fwrite_wkq(vfs_writef_t func, struct file *file, void *buf, + size_t size, loff_t *pos); + +static ssize_t do_xino_fwrite(vfs_writef_t func, struct file *file, void *kbuf, + size_t size, loff_t *pos) +{ + ssize_t err; + mm_segment_t oldfs; + union { + void *k; + const char __user *u; + } buf; + int i; + const int prevent_endless = 10; + + i = 0; + buf.k = kbuf; + oldfs = get_fs(); + set_fs(KERNEL_DS); + do { + err = func(file, buf.u, size, pos); + if (err == -EINTR + && !au_wkq_test() + && fatal_signal_pending(current)) { + set_fs(oldfs); + err = xino_fwrite_wkq(func, file, kbuf, size, pos); + BUG_ON(err == -EINTR); + oldfs = get_fs(); + set_fs(KERNEL_DS); + } + } while (i++ < prevent_endless + && (err == -EAGAIN || err == -EINTR)); + set_fs(oldfs); + +#if 0 /* reserved for future use */ + if (err > 0) + fsnotify_modify(file->f_path.dentry); +#endif + + return err; +} + +struct do_xino_fwrite_args { + ssize_t *errp; + vfs_writef_t func; + struct file *file; + void *buf; + size_t size; + loff_t *pos; +}; + +static void call_do_xino_fwrite(void *args) +{ + struct do_xino_fwrite_args *a = args; + *a->errp = do_xino_fwrite(a->func, a->file, a->buf, a->size, a->pos); +} + +static ssize_t xino_fwrite_wkq(vfs_writef_t func, struct file *file, void *buf, + size_t size, loff_t *pos) +{ + ssize_t err; + int wkq_err; + struct do_xino_fwrite_args args = { + .errp = &err, + .func = func, + .file = file, + .buf = buf, + .size = size, + .pos = pos + }; + + /* + * it breaks RLIMIT_FSIZE and normal user's limit, + * users should care about quota and real 'filesystem full.' + */ + wkq_err = au_wkq_wait(call_do_xino_fwrite, &args); + if (unlikely(wkq_err)) + err = wkq_err; + + return err; +} + +ssize_t xino_fwrite(vfs_writef_t func, struct file *file, void *buf, + size_t size, loff_t *pos) +{ + ssize_t err; + + if (rlimit(RLIMIT_FSIZE) == RLIM_INFINITY) { + lockdep_off(); + err = do_xino_fwrite(func, file, buf, size, pos); + lockdep_on(); + } else { + lockdep_off(); + err = xino_fwrite_wkq(func, file, buf, size, pos); + lockdep_on(); + } + + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* + * inode number bitmap + */ +static const int page_bits = (int)PAGE_SIZE * BITS_PER_BYTE; +static ino_t xib_calc_ino(unsigned long pindex, int bit) +{ + ino_t ino; + + AuDebugOn(bit < 0 || page_bits <= bit); + ino = AUFS_FIRST_INO + pindex * page_bits + bit; + return ino; +} + +static void xib_calc_bit(ino_t ino, unsigned long *pindex, int *bit) +{ + AuDebugOn(ino < AUFS_FIRST_INO); + ino -= AUFS_FIRST_INO; + *pindex = ino / page_bits; + *bit = ino % page_bits; +} + +static int xib_pindex(struct super_block *sb, unsigned long pindex) +{ + int err; + loff_t pos; + ssize_t sz; + struct au_sbinfo *sbinfo; + struct file *xib; + unsigned long *p; + + sbinfo = au_sbi(sb); + MtxMustLock(&sbinfo->si_xib_mtx); + AuDebugOn(pindex > ULONG_MAX / PAGE_SIZE + || !au_opt_test(sbinfo->si_mntflags, XINO)); + + if (pindex == sbinfo->si_xib_last_pindex) + return 0; + + xib = sbinfo->si_xib; + p = sbinfo->si_xib_buf; + pos = sbinfo->si_xib_last_pindex; + pos *= PAGE_SIZE; + sz = xino_fwrite(sbinfo->si_xwrite, xib, p, PAGE_SIZE, &pos); + if (unlikely(sz != PAGE_SIZE)) + goto out; + + pos = pindex; + pos *= PAGE_SIZE; + if (vfsub_f_size_read(xib) >= pos + PAGE_SIZE) + sz = xino_fread(sbinfo->si_xread, xib, p, PAGE_SIZE, &pos); + else { + memset(p, 0, PAGE_SIZE); + sz = xino_fwrite(sbinfo->si_xwrite, xib, p, PAGE_SIZE, &pos); + } + if (sz == PAGE_SIZE) { + sbinfo->si_xib_last_pindex = pindex; + return 0; /* success */ + } + +out: + AuIOErr1("write failed (%zd)\n", sz); + err = sz; + if (sz >= 0) + err = -EIO; + return err; +} + +static void au_xib_clear_bit(struct inode *inode) +{ + int err, bit; + unsigned long pindex; + struct super_block *sb; + struct au_sbinfo *sbinfo; + + AuDebugOn(inode->i_nlink); + + sb = inode->i_sb; + xib_calc_bit(inode->i_ino, &pindex, &bit); + AuDebugOn(page_bits <= bit); + sbinfo = au_sbi(sb); + mutex_lock(&sbinfo->si_xib_mtx); + err = xib_pindex(sb, pindex); + if (!err) { + clear_bit(bit, sbinfo->si_xib_buf); + sbinfo->si_xib_next_bit = bit; + } + mutex_unlock(&sbinfo->si_xib_mtx); +} + +/* ---------------------------------------------------------------------- */ + +/* + * truncate a xino bitmap file + */ + +/* todo: slow */ +static int do_xib_restore(struct super_block *sb, struct file *file, void *page) +{ + int err, bit; + ssize_t sz; + unsigned long pindex; + loff_t pos, pend; + struct au_sbinfo *sbinfo; + vfs_readf_t func; + ino_t *ino; + unsigned long *p; + + err = 0; + sbinfo = au_sbi(sb); + MtxMustLock(&sbinfo->si_xib_mtx); + p = sbinfo->si_xib_buf; + func = sbinfo->si_xread; + pend = vfsub_f_size_read(file); + pos = 0; + while (pos < pend) { + sz = xino_fread(func, file, page, PAGE_SIZE, &pos); + err = sz; + if (unlikely(sz <= 0)) + goto out; + + err = 0; + for (ino = page; sz > 0; ino++, sz -= sizeof(ino)) { + if (unlikely(*ino < AUFS_FIRST_INO)) + continue; + + xib_calc_bit(*ino, &pindex, &bit); + AuDebugOn(page_bits <= bit); + err = xib_pindex(sb, pindex); + if (!err) + set_bit(bit, p); + else + goto out; + } + } + +out: + return err; +} + +static int xib_restore(struct super_block *sb) +{ + int err; + aufs_bindex_t bindex, bbot; + void *page; + struct au_branch *br; + + err = -ENOMEM; + page = (void *)__get_free_page(GFP_NOFS); + if (unlikely(!page)) + goto out; + + err = 0; + bbot = au_sbbot(sb); + for (bindex = 0; !err && bindex <= bbot; bindex++) + if (!bindex || is_sb_shared(sb, bindex, bindex - 1) < 0) { + br = au_sbr(sb, bindex); + err = do_xib_restore(sb, au_xino_file(br), page); + } else + AuDbg("skip shared b%d\n", bindex); + free_page((unsigned long)page); + +out: + return err; +} + +int au_xib_trunc(struct super_block *sb) +{ + int err; + ssize_t sz; + loff_t pos; + struct au_sbinfo *sbinfo; + unsigned long *p; + struct file *file; + + SiMustWriteLock(sb); + + err = 0; + sbinfo = au_sbi(sb); + if (!au_opt_test(sbinfo->si_mntflags, XINO)) + goto out; + + file = sbinfo->si_xib; + if (vfsub_f_size_read(file) <= PAGE_SIZE) + goto out; + + file = au_xino_create2(sb, &sbinfo->si_xib->f_path, NULL); + err = PTR_ERR(file); + if (IS_ERR(file)) + goto out; + fput(sbinfo->si_xib); + sbinfo->si_xib = file; + + p = sbinfo->si_xib_buf; + memset(p, 0, PAGE_SIZE); + pos = 0; + sz = xino_fwrite(sbinfo->si_xwrite, sbinfo->si_xib, p, PAGE_SIZE, &pos); + if (unlikely(sz != PAGE_SIZE)) { + err = sz; + AuIOErr("err %d\n", err); + if (sz >= 0) + err = -EIO; + goto out; + } + + mutex_lock(&sbinfo->si_xib_mtx); + /* mnt_want_write() is unnecessary here */ + err = xib_restore(sb); + mutex_unlock(&sbinfo->si_xib_mtx); + +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +struct au_xino *au_xino_alloc(void) +{ + struct au_xino *xi; + + xi = kzalloc(sizeof(*xi), GFP_NOFS); + if (unlikely(!xi)) + goto out; + + xi->xi_nondir.total = 8; /* initial size */ + xi->xi_nondir.array = kcalloc(xi->xi_nondir.total, sizeof(ino_t), + GFP_NOFS); + if (unlikely(!xi->xi_nondir.array)) + goto out_free; + + spin_lock_init(&xi->xi_nondir.spin); + init_waitqueue_head(&xi->xi_nondir.wqh); + atomic_set(&xi->xi_truncating, 0); + kref_init(&xi->xi_kref); + goto out; /* success */ + +out_free: + kfree(xi); + xi = NULL; +out: + return xi; +} + +static int au_xino_init(struct au_branch *br, struct file *file) +{ + int err; + struct au_xino *xi; + + err = 0; + xi = au_xino_alloc(); + if (unlikely(!xi)) { + err = -ENOMEM; + goto out; + } + + get_file(file); + xi->xi_file = file; + AuDebugOn(br->br_xino); + br->br_xino = xi; + +out: + return err; +} + +static void au_xino_release(struct kref *kref) +{ + struct au_xino *xi; + int i; + + xi = container_of(kref, struct au_xino, xi_kref); + if (xi->xi_file) + fput(xi->xi_file); + for (i = xi->xi_nondir.total - 1; i >= 0; i--) + AuDebugOn(xi->xi_nondir.array[i]); + kfree(xi->xi_nondir.array); + kfree(xi); +} + +int au_xino_put(struct au_branch *br) +{ + int ret; + struct au_xino *xi; + + ret = 0; + xi = br->br_xino; + if (xi) { + br->br_xino = NULL; + ret = kref_put(&xi->xi_kref, au_xino_release); + } + + return ret; +} + +void au_xino_file_set(struct au_branch *br, struct file *file) +{ + struct au_xino *xi; + struct file *f; + + if (file) + get_file(file); + xi = br->br_xino; + AuDebugOn(!xi); + f = xi->xi_file; + if (f) + fput(f); + xi->xi_file = file; +} + +/* ---------------------------------------------------------------------- */ + +/* + * xino mount option handlers + */ + +/* xino bitmap */ +static void xino_clear_xib(struct super_block *sb) +{ + struct au_sbinfo *sbinfo; + + SiMustWriteLock(sb); + + sbinfo = au_sbi(sb); + /* unnecessary to clear sbinfo->si_xread and ->si_xwrite */ + if (sbinfo->si_xib) + fput(sbinfo->si_xib); + sbinfo->si_xib = NULL; + if (sbinfo->si_xib_buf) + free_page((unsigned long)sbinfo->si_xib_buf); + sbinfo->si_xib_buf = NULL; +} + +static int au_xino_set_xib(struct super_block *sb, struct path *path) +{ + int err; + loff_t pos; + struct au_sbinfo *sbinfo; + struct file *file; + + SiMustWriteLock(sb); + + sbinfo = au_sbi(sb); + file = au_xino_create2(sb, path, sbinfo->si_xib); + err = PTR_ERR(file); + if (IS_ERR(file)) + goto out; + if (sbinfo->si_xib) + fput(sbinfo->si_xib); + sbinfo->si_xib = file; + sbinfo->si_xread = vfs_readf(file); + sbinfo->si_xwrite = vfs_writef(file); + + err = -ENOMEM; + if (!sbinfo->si_xib_buf) + sbinfo->si_xib_buf = (void *)get_zeroed_page(GFP_NOFS); + if (unlikely(!sbinfo->si_xib_buf)) + goto out_unset; + + sbinfo->si_xib_last_pindex = 0; + sbinfo->si_xib_next_bit = 0; + if (vfsub_f_size_read(file) < PAGE_SIZE) { + pos = 0; + err = xino_fwrite(sbinfo->si_xwrite, file, sbinfo->si_xib_buf, + PAGE_SIZE, &pos); + if (unlikely(err != PAGE_SIZE)) + goto out_free; + } + err = 0; + goto out; /* success */ + +out_free: + if (sbinfo->si_xib_buf) + free_page((unsigned long)sbinfo->si_xib_buf); + sbinfo->si_xib_buf = NULL; + if (err >= 0) + err = -EIO; +out_unset: + fput(sbinfo->si_xib); + sbinfo->si_xib = NULL; +out: + AuTraceErr(err); + return err; +} + +/* xino for each branch */ +static void xino_clear_br(struct super_block *sb) +{ + aufs_bindex_t bindex, bbot; + struct au_branch *br; + + bbot = au_sbbot(sb); + for (bindex = 0; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + AuDebugOn(!br); + au_xino_put(br); + } +} + +static void au_xino_set_br_shared(struct super_block *sb, struct au_branch *br, + aufs_bindex_t bshared) +{ + struct au_branch *brshared; + + brshared = au_sbr(sb, bshared); + AuDebugOn(!brshared->br_xino); + AuDebugOn(!brshared->br_xino->xi_file); + if (br->br_xino != brshared->br_xino) { + au_xino_get(brshared); + au_xino_put(br); + br->br_xino = brshared->br_xino; + } +} + +struct au_xino_do_set_br { + vfs_writef_t writef; + struct au_branch *br; + ino_t h_ino; + aufs_bindex_t bshared; +}; + +static int au_xino_do_set_br(struct super_block *sb, struct path *path, + struct au_xino_do_set_br *args) +{ + int err; + struct file *file; + + if (args->bshared >= 0) { + /* shared xino */ + au_xino_set_br_shared(sb, args->br, args->bshared); + file = au_xino_file(args->br); + goto out_ino; /* success */ + } + + /* new xino */ + file = au_xino_create2(sb, path, au_xino_file(args->br)); + err = PTR_ERR(file); + if (IS_ERR(file)) + goto out; + if (!args->br->br_xino) { + err = au_xino_init(args->br, file); + fput(file); + if (unlikely(err)) + goto out; + } else { + au_xino_file_set(args->br, file); + fput(file); + } + +out_ino: + err = au_xino_do_write(args->writef, file, args->h_ino, AUFS_ROOT_INO); +out: + AuTraceErr(err); + return err; +} + +static int au_xino_set_br(struct super_block *sb, struct path *path) +{ + int err; + aufs_bindex_t bindex, bbot; + struct au_xino_do_set_br args; + struct inode *inode; + + SiMustWriteLock(sb); + + bbot = au_sbbot(sb); + inode = d_inode(sb->s_root); + args.writef = au_sbi(sb)->si_xwrite; + for (bindex = 0; bindex <= bbot; bindex++) { + args.h_ino = au_h_iptr(inode, bindex)->i_ino; + args.br = au_sbr(sb, bindex); + args.bshared = is_sb_shared(sb, bindex, bindex - 1); + err = au_xino_do_set_br(sb, path, &args); + if (unlikely(err)) + break; + } + + AuTraceErr(err); + return err; +} + +void au_xino_clr(struct super_block *sb) +{ + struct au_sbinfo *sbinfo; + + au_xigen_clr(sb); + xino_clear_xib(sb); + xino_clear_br(sb); + dbgaufs_brs_del(sb, 0); + au_xino_brid_set(sb, -1); + sbinfo = au_sbi(sb); + /* lvalue, do not call au_mntflags() */ + au_opt_clr(sbinfo->si_mntflags, XINO); +} + +int au_xino_set(struct super_block *sb, struct au_opt_xino *xiopt, int remount) +{ + int err, skip; + struct dentry *dentry, *parent, *cur_dentry, *cur_parent; + struct qstr *dname, *cur_name; + struct file *cur_xino; + struct au_sbinfo *sbinfo; + struct path *path, *cur_path; + + SiMustWriteLock(sb); + + err = 0; + sbinfo = au_sbi(sb); + path = &xiopt->file->f_path; + dentry = path->dentry; + parent = dget_parent(dentry); + if (remount) { + skip = 0; + cur_xino = sbinfo->si_xib; + if (cur_xino) { + cur_path = &cur_xino->f_path; + cur_dentry = cur_path->dentry; + cur_parent = dget_parent(cur_dentry); + cur_name = &cur_dentry->d_name; + dname = &dentry->d_name; + skip = (cur_parent == parent + && au_qstreq(dname, cur_name)); + dput(cur_parent); + } + if (skip) + goto out; + } + + au_opt_set(sbinfo->si_mntflags, XINO); + err = au_xino_set_xib(sb, path); + /* si_x{read,write} are set */ + if (!err) + err = au_xigen_set(sb, path); + if (!err) + err = au_xino_set_br(sb, path); + if (!err) { + dbgaufs_brs_add(sb, 0, /*topdown*/1); + goto out; /* success */ + } + + /* reset all */ + AuIOErr("failed setting xino(%d).\n", err); + au_xino_clr(sb); + +out: + dput(parent); + return err; +} + +/* + * create a xinofile at the default place/path. + */ +struct file *au_xino_def(struct super_block *sb) +{ + struct file *file; + char *page, *p; + struct au_branch *br; + struct super_block *h_sb; + struct path path; + aufs_bindex_t bbot, bindex, bwr; + + br = NULL; + bbot = au_sbbot(sb); + bwr = -1; + for (bindex = 0; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + if (au_br_writable(br->br_perm) + && !au_test_fs_bad_xino(au_br_sb(br))) { + bwr = bindex; + break; + } + } + + if (bwr >= 0) { + file = ERR_PTR(-ENOMEM); + page = (void *)__get_free_page(GFP_NOFS); + if (unlikely(!page)) + goto out; + path.mnt = au_br_mnt(br); + path.dentry = au_h_dptr(sb->s_root, bwr); + p = d_path(&path, page, PATH_MAX - sizeof(AUFS_XINO_FNAME)); + file = (void *)p; + if (!IS_ERR(p)) { + strcat(p, "/" AUFS_XINO_FNAME); + AuDbg("%s\n", p); + file = au_xino_create(sb, p, /*silent*/0); + if (!IS_ERR(file)) + au_xino_brid_set(sb, br->br_id); + } + free_page((unsigned long)page); + } else { + file = au_xino_create(sb, AUFS_XINO_DEFPATH, /*silent*/0); + if (IS_ERR(file)) + goto out; + h_sb = file->f_path.dentry->d_sb; + if (unlikely(au_test_fs_bad_xino(h_sb))) { + pr_err("xino doesn't support %s(%s)\n", + AUFS_XINO_DEFPATH, au_sbtype(h_sb)); + fput(file); + file = ERR_PTR(-EINVAL); + } + if (!IS_ERR(file)) + au_xino_brid_set(sb, -1); + } + +out: + return file; +} + +/* ---------------------------------------------------------------------- */ + +/* + * initialize the xinofile for the specified branch @br + * at the place/path where @base_file indicates. + * test whether another branch is on the same filesystem or not, + * if found then share the xinofile with another branch. + */ +int au_xino_init_br(struct super_block *sb, struct au_branch *br, ino_t h_ino, + struct path *base) +{ + int err; + struct au_xino_do_set_br args = { + .h_ino = h_ino, + .br = br + }; + + args.writef = au_sbi(sb)->si_xwrite; + args.bshared = sbr_find_shared(sb, /*btop*/0, au_sbbot(sb), + au_br_sb(br)); + err = au_xino_do_set_br(sb, base, &args); + if (unlikely(err)) + au_xino_put(br); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* + * get an unused inode number from bitmap + */ +ino_t au_xino_new_ino(struct super_block *sb) +{ + ino_t ino; + unsigned long *p, pindex, ul, pend; + struct au_sbinfo *sbinfo; + struct file *file; + int free_bit, err; + + if (!au_opt_test(au_mntflags(sb), XINO)) + return iunique(sb, AUFS_FIRST_INO); + + sbinfo = au_sbi(sb); + mutex_lock(&sbinfo->si_xib_mtx); + p = sbinfo->si_xib_buf; + free_bit = sbinfo->si_xib_next_bit; + if (free_bit < page_bits && !test_bit(free_bit, p)) + goto out; /* success */ + free_bit = find_first_zero_bit(p, page_bits); + if (free_bit < page_bits) + goto out; /* success */ + + pindex = sbinfo->si_xib_last_pindex; + for (ul = pindex - 1; ul < ULONG_MAX; ul--) { + err = xib_pindex(sb, ul); + if (unlikely(err)) + goto out_err; + free_bit = find_first_zero_bit(p, page_bits); + if (free_bit < page_bits) + goto out; /* success */ + } + + file = sbinfo->si_xib; + pend = vfsub_f_size_read(file) / PAGE_SIZE; + for (ul = pindex + 1; ul <= pend; ul++) { + err = xib_pindex(sb, ul); + if (unlikely(err)) + goto out_err; + free_bit = find_first_zero_bit(p, page_bits); + if (free_bit < page_bits) + goto out; /* success */ + } + BUG(); + +out: + set_bit(free_bit, p); + sbinfo->si_xib_next_bit = free_bit + 1; + pindex = sbinfo->si_xib_last_pindex; + mutex_unlock(&sbinfo->si_xib_mtx); + ino = xib_calc_ino(pindex, free_bit); + AuDbg("i%lu\n", (unsigned long)ino); + return ino; +out_err: + mutex_unlock(&sbinfo->si_xib_mtx); + AuDbg("i0\n"); + return 0; +} + +/* for s_op->delete_inode() */ +void au_xino_delete_inode(struct inode *inode, const int unlinked) +{ + int err; + unsigned int mnt_flags; + aufs_bindex_t bindex, bbot, bi; + unsigned char try_trunc; + struct au_iinfo *iinfo; + struct super_block *sb; + struct au_hinode *hi; + struct inode *h_inode; + struct au_branch *br; + vfs_writef_t xwrite; + + AuDebugOn(au_is_bad_inode(inode)); + + sb = inode->i_sb; + mnt_flags = au_mntflags(sb); + if (!au_opt_test(mnt_flags, XINO) + || inode->i_ino == AUFS_ROOT_INO) + return; + + if (unlinked) { + au_xigen_inc(inode); + au_xib_clear_bit(inode); + } + + iinfo = au_ii(inode); + bindex = iinfo->ii_btop; + if (bindex < 0) + return; + + xwrite = au_sbi(sb)->si_xwrite; + try_trunc = !!au_opt_test(mnt_flags, TRUNC_XINO); + hi = au_hinode(iinfo, bindex); + bbot = iinfo->ii_bbot; + for (; bindex <= bbot; bindex++, hi++) { + h_inode = hi->hi_inode; + if (!h_inode + || (!unlinked && h_inode->i_nlink)) + continue; + + /* inode may not be revalidated */ + bi = au_br_index(sb, hi->hi_id); + if (bi < 0) + continue; + + br = au_sbr(sb, bi); + err = au_xino_do_write(xwrite, au_xino_file(br), + h_inode->i_ino, /*ino*/0); + if (!err && try_trunc + && au_test_fs_trunc_xino(au_br_sb(br))) + xino_try_trunc(sb, br); + } +} + +/* ---------------------------------------------------------------------- */ + +static int au_xinondir_find(struct au_xino *xi, ino_t h_ino) +{ + int found, total, i; + + found = -1; + total = xi->xi_nondir.total; + for (i = 0; i < total; i++) { + if (xi->xi_nondir.array[i] != h_ino) + continue; + found = i; + break; + } + + return found; +} + +static int au_xinondir_expand(struct au_xino *xi) +{ + int err, sz; + ino_t *p; + + BUILD_BUG_ON(KMALLOC_MAX_SIZE > INT_MAX); + + err = -ENOMEM; + sz = xi->xi_nondir.total * sizeof(ino_t); + if (unlikely(sz > KMALLOC_MAX_SIZE / 2)) + goto out; + p = au_kzrealloc(xi->xi_nondir.array, sz, sz << 1, GFP_ATOMIC, + /*may_shrink*/0); + if (p) { + xi->xi_nondir.array = p; + xi->xi_nondir.total <<= 1; + AuDbg("xi_nondir.total %d\n", xi->xi_nondir.total); + err = 0; + } + +out: + return err; +} + +void au_xinondir_leave(struct super_block *sb, aufs_bindex_t bindex, + ino_t h_ino, int idx) +{ + struct au_xino *xi; + + AuDebugOn(!au_opt_test(au_mntflags(sb), XINO)); + xi = au_sbr(sb, bindex)->br_xino; + AuDebugOn(idx < 0 || xi->xi_nondir.total <= idx); + + spin_lock(&xi->xi_nondir.spin); + AuDebugOn(xi->xi_nondir.array[idx] != h_ino); + xi->xi_nondir.array[idx] = 0; + spin_unlock(&xi->xi_nondir.spin); + wake_up_all(&xi->xi_nondir.wqh); +} + +int au_xinondir_enter(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino, + int *idx) +{ + int err, found, empty; + struct au_xino *xi; + + err = 0; + *idx = -1; + if (!au_opt_test(au_mntflags(sb), XINO)) + goto out; /* no xino */ + + xi = au_sbr(sb, bindex)->br_xino; + +again: + spin_lock(&xi->xi_nondir.spin); + found = au_xinondir_find(xi, h_ino); + if (found == -1) { + empty = au_xinondir_find(xi, /*h_ino*/0); + if (empty == -1) { + empty = xi->xi_nondir.total; + err = au_xinondir_expand(xi); + if (unlikely(err)) + goto out_unlock; + } + xi->xi_nondir.array[empty] = h_ino; + *idx = empty; + } else { + spin_unlock(&xi->xi_nondir.spin); + wait_event(xi->xi_nondir.wqh, + xi->xi_nondir.array[found] != h_ino); + goto again; + } + +out_unlock: + spin_unlock(&xi->xi_nondir.spin); +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +int au_xino_path(struct seq_file *seq, struct file *file) +{ + int err; + + err = au_seq_path(seq, &file->f_path); + if (unlikely(err)) + goto out; + +#define Deleted "\\040(deleted)" + seq->count -= sizeof(Deleted) - 1; + AuDebugOn(memcmp(seq->buf + seq->count, Deleted, + sizeof(Deleted) - 1)); +#undef Deleted + +out: + return err; +} diff --git a/fs/dcache.c b/fs/dcache.c index ceb7b491d1b..e3f500a5a1e 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -1237,7 +1237,7 @@ enum d_walk_ret { * * The @enter() callbacks are called with d_lock held. */ -static void d_walk(struct dentry *parent, void *data, +void d_walk(struct dentry *parent, void *data, enum d_walk_ret (*enter)(void *, struct dentry *)) { struct dentry *this_parent; @@ -1342,6 +1342,7 @@ static void d_walk(struct dentry *parent, void *data, seq = 1; goto again; } +EXPORT_SYMBOL_GPL(d_walk); struct check_mount { struct vfsmount *mnt; @@ -2890,6 +2891,7 @@ void d_exchange(struct dentry *dentry1, struct dentry *dentry2) write_sequnlock(&rename_lock); } +EXPORT_SYMBOL_GPL(d_exchange); /** * d_ancestor - search for an ancestor diff --git a/fs/exec.c b/fs/exec.c index bdd0eacefdf..dcb35e90029 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -62,6 +62,9 @@ #include #include #include +#include + +#include #include #include @@ -109,6 +112,7 @@ bool path_noexec(const struct path *path) return (path->mnt->mnt_flags & MNT_NOEXEC) || (path->mnt->mnt_sb->s_iflags & SB_I_NOEXEC); } +EXPORT_SYMBOL_GPL(path_noexec); #ifdef CONFIG_USELIB /* @@ -865,8 +869,10 @@ static struct file *do_open_execat(int fd, struct filename *name, int flags) if (err) goto exit; - if (name->name[0] != '\0') + if (name->name[0] != '\0') { fsnotify_open(file); + trace_open_exec(name->name); + } out: return file; @@ -1378,6 +1384,7 @@ void setup_new_exec(struct linux_binprm * bprm) /* An exec changes our domain. We are no longer part of the thread group */ current->self_exec_id++; + flush_signal_handlers(current, 0); } EXPORT_SYMBOL(setup_new_exec); diff --git a/fs/exfat/Kconfig b/fs/exfat/Kconfig new file mode 100644 index 00000000000..78b32aa2ca1 --- /dev/null +++ b/fs/exfat/Kconfig @@ -0,0 +1,39 @@ +config EXFAT_FS + tristate "exFAT fs support" + select NLS + help + This adds support for the exFAT file system. + +config EXFAT_DISCARD + bool "enable discard support" + depends on EXFAT_FS + default y + +config EXFAT_DELAYED_SYNC + bool "enable delayed sync" + depends on EXFAT_FS + default n + +config EXFAT_KERNEL_DEBUG + bool "enable kernel debug features via ioctl" + depends on EXFAT_FS + default n + +config EXFAT_DEBUG_MSG + bool "print debug messages" + depends on EXFAT_FS + default n + +config EXFAT_DEFAULT_CODEPAGE + int "Default codepage for exFAT" + default 437 + depends on EXFAT_FS + help + This option should be set to the codepage of your exFAT filesystems. + +config EXFAT_DEFAULT_IOCHARSET + string "Default iocharset for exFAT" + default "utf8" + depends on EXFAT_FS + help + Set this to the default input/output character set you'd like exFAT to use. diff --git a/fs/exfat/LICENSE b/fs/exfat/LICENSE new file mode 100644 index 00000000000..d159169d105 --- /dev/null +++ b/fs/exfat/LICENSE @@ -0,0 +1,339 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Lesser General Public License instead.) You can apply it to +your programs, too. + + When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +this service if you wish), that you receive source code or can get it +if you want it, that you can change the software or use pieces of it +in new free programs; and that you know you can do these things. + + To protect your rights, we need to make restrictions that forbid +anyone to deny you these rights or to ask you to surrender the rights. +These restrictions translate to certain responsibilities for you if you +distribute copies of the software, or if you modify it. + + For example, if you distribute copies of such a program, whether +gratis or for a fee, you must give the recipients all the rights that +you have. You must make sure that they, too, receive or can get the +source code. And you must show them these terms so they know their +rights. + + We protect your rights with two steps: (1) copyright the software, and +(2) offer you this license which gives you legal permission to copy, +distribute and/or modify the software. + + Also, for each author's protection and ours, we want to make certain +that everyone understands that there is no warranty for this free +software. If the software is modified by someone else and passed on, we +want its recipients to know that what they have is not the original, so +that any problems introduced by others will not reflect on the original +authors' reputations. + + Finally, any free program is threatened constantly by software +patents. We wish to avoid the danger that redistributors of a free +program will individually obtain patent licenses, in effect making the +program proprietary. To prevent this, we have made it clear that any +patent must be licensed for everyone's free use or not licensed at all. + + The precise terms and conditions for copying, distribution and +modification follow. + + GNU GENERAL PUBLIC LICENSE + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + + 0. This License applies to any program or other work which contains +a notice placed by the copyright holder saying it may be distributed +under the terms of this General Public License. The "Program", below, +refers to any such program or work, and a "work based on the Program" +means either the Program or any derivative work under copyright law: +that is to say, a work containing the Program or a portion of it, +either verbatim or with modifications and/or translated into another +language. (Hereinafter, translation is included without limitation in +the term "modification".) Each licensee is addressed as "you". + +Activities other than copying, distribution and modification are not +covered by this License; they are outside its scope. The act of +running the Program is not restricted, and the output from the Program +is covered only if its contents constitute a work based on the +Program (independent of having been made by running the Program). +Whether that is true depends on what the Program does. + + 1. You may copy and distribute verbatim copies of the Program's +source code as you receive it, in any medium, provided that you +conspicuously and appropriately publish on each copy an appropriate +copyright notice and disclaimer of warranty; keep intact all the +notices that refer to this License and to the absence of any warranty; +and give any other recipients of the Program a copy of this License +along with the Program. + +You may charge a fee for the physical act of transferring a copy, and +you may at your option offer warranty protection in exchange for a fee. + + 2. You may modify your copy or copies of the Program or any portion +of it, thus forming a work based on the Program, and copy and +distribute such modifications or work under the terms of Section 1 +above, provided that you also meet all of these conditions: + + a) You must cause the modified files to carry prominent notices + stating that you changed the files and the date of any change. + + b) You must cause any work that you distribute or publish, that in + whole or in part contains or is derived from the Program or any + part thereof, to be licensed as a whole at no charge to all third + parties under the terms of this License. + + c) If the modified program normally reads commands interactively + when run, you must cause it, when started running for such + interactive use in the most ordinary way, to print or display an + announcement including an appropriate copyright notice and a + notice that there is no warranty (or else, saying that you provide + a warranty) and that users may redistribute the program under + these conditions, and telling the user how to view a copy of this + License. (Exception: if the Program itself is interactive but + does not normally print such an announcement, your work based on + the Program is not required to print an announcement.) + +These requirements apply to the modified work as a whole. If +identifiable sections of that work are not derived from the Program, +and can be reasonably considered independent and separate works in +themselves, then this License, and its terms, do not apply to those +sections when you distribute them as separate works. But when you +distribute the same sections as part of a whole which is a work based +on the Program, the distribution of the whole must be on the terms of +this License, whose permissions for other licensees extend to the +entire whole, and thus to each and every part regardless of who wrote it. + +Thus, it is not the intent of this section to claim rights or contest +your rights to work written entirely by you; rather, the intent is to +exercise the right to control the distribution of derivative or +collective works based on the Program. + +In addition, mere aggregation of another work not based on the Program +with the Program (or with a work based on the Program) on a volume of +a storage or distribution medium does not bring the other work under +the scope of this License. + + 3. You may copy and distribute the Program (or a work based on it, +under Section 2) in object code or executable form under the terms of +Sections 1 and 2 above provided that you also do one of the following: + + a) Accompany it with the complete corresponding machine-readable + source code, which must be distributed under the terms of Sections + 1 and 2 above on a medium customarily used for software interchange; or, + + b) Accompany it with a written offer, valid for at least three + years, to give any third party, for a charge no more than your + cost of physically performing source distribution, a complete + machine-readable copy of the corresponding source code, to be + distributed under the terms of Sections 1 and 2 above on a medium + customarily used for software interchange; or, + + c) Accompany it with the information you received as to the offer + to distribute corresponding source code. (This alternative is + allowed only for noncommercial distribution and only if you + received the program in object code or executable form with such + an offer, in accord with Subsection b above.) + +The source code for a work means the preferred form of the work for +making modifications to it. For an executable work, complete source +code means all the source code for all modules it contains, plus any +associated interface definition files, plus the scripts used to +control compilation and installation of the executable. However, as a +special exception, the source code distributed need not include +anything that is normally distributed (in either source or binary +form) with the major components (compiler, kernel, and so on) of the +operating system on which the executable runs, unless that component +itself accompanies the executable. + +If distribution of executable or object code is made by offering +access to copy from a designated place, then offering equivalent +access to copy the source code from the same place counts as +distribution of the source code, even though third parties are not +compelled to copy the source along with the object code. + + 4. You may not copy, modify, sublicense, or distribute the Program +except as expressly provided under this License. Any attempt +otherwise to copy, modify, sublicense or distribute the Program is +void, and will automatically terminate your rights under this License. +However, parties who have received copies, or rights, from you under +this License will not have their licenses terminated so long as such +parties remain in full compliance. + + 5. You are not required to accept this License, since you have not +signed it. However, nothing else grants you permission to modify or +distribute the Program or its derivative works. These actions are +prohibited by law if you do not accept this License. Therefore, by +modifying or distributing the Program (or any work based on the +Program), you indicate your acceptance of this License to do so, and +all its terms and conditions for copying, distributing or modifying +the Program or works based on it. + + 6. Each time you redistribute the Program (or any work based on the +Program), the recipient automatically receives a license from the +original licensor to copy, distribute or modify the Program subject to +these terms and conditions. You may not impose any further +restrictions on the recipients' exercise of the rights granted herein. +You are not responsible for enforcing compliance by third parties to +this License. + + 7. If, as a consequence of a court judgment or allegation of patent +infringement or for any other reason (not limited to patent issues), +conditions are imposed on you (whether by court order, agreement or +otherwise) that contradict the conditions of this License, they do not +excuse you from the conditions of this License. If you cannot +distribute so as to satisfy simultaneously your obligations under this +License and any other pertinent obligations, then as a consequence you +may not distribute the Program at all. For example, if a patent +license would not permit royalty-free redistribution of the Program by +all those who receive copies directly or indirectly through you, then +the only way you could satisfy both it and this License would be to +refrain entirely from distribution of the Program. + +If any portion of this section is held invalid or unenforceable under +any particular circumstance, the balance of the section is intended to +apply and the section as a whole is intended to apply in other +circumstances. + +It is not the purpose of this section to induce you to infringe any +patents or other property right claims or to contest validity of any +such claims; this section has the sole purpose of protecting the +integrity of the free software distribution system, which is +implemented by public license practices. Many people have made +generous contributions to the wide range of software distributed +through that system in reliance on consistent application of that +system; it is up to the author/donor to decide if he or she is willing +to distribute software through any other system and a licensee cannot +impose that choice. + +This section is intended to make thoroughly clear what is believed to +be a consequence of the rest of this License. + + 8. If the distribution and/or use of the Program is restricted in +certain countries either by patents or by copyrighted interfaces, the +original copyright holder who places the Program under this License +may add an explicit geographical distribution limitation excluding +those countries, so that distribution is permitted only in or among +countries not thus excluded. In such case, this License incorporates +the limitation as if written in the body of this License. + + 9. The Free Software Foundation may publish revised and/or new versions +of the General Public License from time to time. Such new versions will +be similar in spirit to the present version, but may differ in detail to +address new problems or concerns. + +Each version is given a distinguishing version number. If the Program +specifies a version number of this License which applies to it and "any +later version", you have the option of following the terms and conditions +either of that version or of any later version published by the Free +Software Foundation. If the Program does not specify a version number of +this License, you may choose any version ever published by the Free Software +Foundation. + + 10. If you wish to incorporate parts of the Program into other free +programs whose distribution conditions are different, write to the author +to ask for permission. For software which is copyrighted by the Free +Software Foundation, write to the Free Software Foundation; we sometimes +make exceptions for this. Our decision will be guided by the two goals +of preserving the free status of all derivatives of our free software and +of promoting the sharing and reuse of software generally. + + NO WARRANTY + + 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY +FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN +OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES +PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED +OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS +TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE +PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, +REPAIR OR CORRECTION. + + 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR +REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING +OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED +TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY +YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER +PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE +POSSIBILITY OF SUCH DAMAGES. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + , 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. diff --git a/fs/exfat/Makefile b/fs/exfat/Makefile new file mode 100644 index 00000000000..711ed87f991 --- /dev/null +++ b/fs/exfat/Makefile @@ -0,0 +1,54 @@ +# +# Makefile for Linux FAT12/FAT16/FAT32(VFAT)/FAT64(ExFAT) filesystem driver. +# + +ifneq ($(KERNELRELEASE),) +# call from kernel build system + +obj-$(CONFIG_EXFAT_FS) += exfat.o + +exfat-objs := exfat_core.o exfat_super.o exfat_api.o exfat_blkdev.o exfat_cache.o \ + exfat_data.o exfat_bitmap.o exfat_nls.o exfat_oal.o exfat_upcase.o + +else +# external module build + +EXTRA_FLAGS += -I$(PWD) + +# +# KDIR is a path to a directory containing kernel source. +# It can be specified on the command line passed to make to enable the module to +# be built and installed for a kernel other than the one currently running. +# By default it is the path to the symbolic link created when +# the current kernel's modules were installed, but +# any valid path to the directory in which the target kernel's source is located +# can be provided on the command line. +# +KDIR ?= /lib/modules/$(shell uname -r)/build +MDIR ?= /lib/modules/$(shell uname -r) +PWD := $(shell pwd) +PWD := $(shell pwd) + +export CONFIG_EXFAT_FS := m + +all: + $(MAKE) -C $(KDIR) M=$(PWD) modules + +clean: + $(MAKE) -C $(KDIR) M=$(PWD) clean + +help: + $(MAKE) -C $(KDIR) M=$(PWD) help + +install: exfat.ko + rm -f ${MDIR}/kernel/fs/exfat/exfat.ko + install -m644 -b -D exfat.ko ${MDIR}/kernel/fs/exfat/exfat.ko + depmod -aq + +uninstall: + rm -rf ${MDIR}/kernel/fs/exfat + depmod -aq + +endif + +.PHONY : all clean install uninstall diff --git a/fs/exfat/README.md b/fs/exfat/README.md new file mode 100644 index 00000000000..feab4003835 --- /dev/null +++ b/fs/exfat/README.md @@ -0,0 +1,98 @@ +exfat-nofuse +============ + +Linux non-fuse read/write kernel driver for the exFAT, FAT12, FAT16 and vfat (FAT32) file systems.
+Originally ported from Android kernel v3.0. + +Kudos to ksv1986 for the mutex patch!
+Thanks to JackNorris for being awesome and providing the clear_inode() patch.
+
+Big thanks to lqs for completing the driver!
+Big thanks to benpicco for fixing 3.11.y compatibility! + + +Special thanks to github user AndreiLux for spreading the word about the leak!
+ + +Installing as a stand-alone module: +==================================== + + make + sudo make install + +To load the driver manually, run this as root: + + modprobe exfat + +You may also specify custom toolchains by using CROSS_COMPILE flag, in my case: +>CROSS_COMPILE=../dorimanx-SG2-I9100-Kernel/android-toolchain/bin/arm-eabi- + +Installing as a part of the kernel: +====================================== + +Let's take [linux] as the path to your kernel source dir... + + cd [linux] + cp -rvf exfat-nofuse [linux]/fs/exfat + +edit [linux]/fs/Kconfig +``` + menu "DOS/FAT/NT Filesystems" + + source "fs/fat/Kconfig" + +source "fs/exfat/Kconfig" + source "fs/ntfs/Kconfig" + endmenu +``` + + +edit [linux]/fs/Makefile +``` + obj-$(CONFIG_FAT_FS) += fat/ + +obj-$(CONFIG_EXFAT_FS) += exfat/ + obj-$(CONFIG_BFS_FS) += bfs/ +``` + + cd [linux] + make menuconfig + +Go to: +> File systems > DOS/FAT/NT +> check exfat as MODULE (M) +> (437) Default codepage for exFAT +> (utf8) Default iocharset for exFAT + +> ESC to main menu +> Save an Alternate Configuration File +> ESC ESC + +build your kernel + +Have fun. + + +Installing as a DKMS module: +================================= + +You can have even more fun with exfat-nofuse by installing it as a DKMS module has the main advantage of being auto-compiled (and thus, possibly surviving) between kernel upgrades. + +First, get dkms. On Ubuntu this should be: + + sudo apt install dkms + +Then copy the root of this repository to /usr/share: + + sudo cp -R . /usr/src/exfat-1.2.8 (or whatever version number declared on dkms.conf is) + sudo dkms add -m exfat -v 1.2.8 + +Build and load the module: + + sudo dkms build -m exfat -v 1.2.8 + sudo dkms install -m exfat -v 1.2.8 + +Now you have a proper dkms module that will work for a long time... hopefully. + + + +Free Software for the Free Minds! +================================= diff --git a/fs/exfat/dkms.conf b/fs/exfat/dkms.conf new file mode 100644 index 00000000000..d873c0aef4f --- /dev/null +++ b/fs/exfat/dkms.conf @@ -0,0 +1,7 @@ +PACKAGE_NAME="exfat" +PACKAGE_VERSION="1.2.8" +MAKE="KDIR=/lib/modules/$kernelver/build MDIR=/lib/modules/$kernelver make" +CLEAN="make clean" +BUILT_MODULE_NAME[0]="exfat" +AUTOINSTALL="yes" +DEST_MODULE_LOCATION="/extra" diff --git a/fs/exfat/exfat-km.mk b/fs/exfat/exfat-km.mk new file mode 100644 index 00000000000..4e3ef07b36e --- /dev/null +++ b/fs/exfat/exfat-km.mk @@ -0,0 +1,11 @@ +EXFAT_FOLDER ?= external/exfat-nofuse + +EXFAT_MODULE: + make clean -C $(EXFAT_FOLDER) KDIR=$(KERNEL_OUT) + make -j8 -C $(EXFAT_FOLDER) ARCH=arm KDIR=$(KERNEL_OUT) \ + $(if $(ARM_CROSS_COMPILE),$(ARM_CROSS_COMPILE),$(KERNEL_CROSS_COMPILE)) + mv $(EXFAT_FOLDER)/exfat.ko $(KERNEL_MODULES_OUT) + $(if $(ARM_EABI_TOOLCHAIN),$(ARM_EABI_TOOLCHAIN)/arm-eabi-strip, \ + $(KERNEL_TOOLCHAIN_PATH)strip) --strip-unneeded $(KERNEL_MODULES_OUT)/exfat.ko + +TARGET_KERNEL_MODULES += EXFAT_MODULE diff --git a/fs/exfat/exfat_api.c b/fs/exfat/exfat_api.c new file mode 100644 index 00000000000..32b29f0dd8d --- /dev/null +++ b/fs/exfat/exfat_api.c @@ -0,0 +1,528 @@ +/* + * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/************************************************************************/ +/* */ +/* PROJECT : exFAT & FAT12/16/32 File System */ +/* FILE : exfat_api.c */ +/* PURPOSE : exFAT API Glue Layer */ +/* */ +/*----------------------------------------------------------------------*/ +/* NOTES */ +/* */ +/*----------------------------------------------------------------------*/ +/* REVISION HISTORY (Ver 0.9) */ +/* */ +/* - 2010.11.15 [Joosun Hahn] : first writing */ +/* */ +/************************************************************************/ + +#include +#include +#include + +#include "exfat_version.h" +#include "exfat_config.h" +#include "exfat_data.h" +#include "exfat_oal.h" + +#include "exfat_nls.h" +#include "exfat_api.h" +#include "exfat_super.h" +#include "exfat_core.h" + +/*----------------------------------------------------------------------*/ +/* Constant & Macro Definitions */ +/*----------------------------------------------------------------------*/ + +/*----------------------------------------------------------------------*/ +/* Global Variable Definitions */ +/*----------------------------------------------------------------------*/ + +extern struct semaphore z_sem; + +/*----------------------------------------------------------------------*/ +/* Local Variable Definitions */ +/*----------------------------------------------------------------------*/ + +/*----------------------------------------------------------------------*/ +/* Local Function Declarations */ +/*----------------------------------------------------------------------*/ + +/*======================================================================*/ +/* Global Function Definitions */ +/* - All functions for global use have same return value format, */ +/* that is, FFS_SUCCESS on success and several FS error code on */ +/* various error condition. */ +/*======================================================================*/ + +/*----------------------------------------------------------------------*/ +/* exFAT Filesystem Init & Exit Functions */ +/*----------------------------------------------------------------------*/ + +int FsInit(void) +{ + return ffsInit(); +} + +int FsShutdown(void) +{ + return ffsShutdown(); +} + +/*----------------------------------------------------------------------*/ +/* Volume Management Functions */ +/*----------------------------------------------------------------------*/ + +/* FsMountVol : mount the file system volume */ +int FsMountVol(struct super_block *sb) +{ + int err; + + sm_P(&z_sem); + + err = buf_init(sb); + if (!err) + err = ffsMountVol(sb); + else + buf_shutdown(sb); + + sm_V(&z_sem); + + return err; +} /* end of FsMountVol */ + +/* FsUmountVol : unmount the file system volume */ +int FsUmountVol(struct super_block *sb) +{ + int err; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + sm_P(&z_sem); + + /* acquire the lock for file system critical section */ + sm_P(&p_fs->v_sem); + + err = ffsUmountVol(sb); + buf_shutdown(sb); + + /* release the lock for file system critical section */ + sm_V(&p_fs->v_sem); + + sm_V(&z_sem); + + return err; +} /* end of FsUmountVol */ + +/* FsGetVolInfo : get the information of a file system volume */ +int FsGetVolInfo(struct super_block *sb, VOL_INFO_T *info) +{ + int err; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + /* check the validity of pointer parameters */ + if (info == NULL) + return FFS_ERROR; + + /* acquire the lock for file system critical section */ + sm_P(&p_fs->v_sem); + + err = ffsGetVolInfo(sb, info); + + /* release the lock for file system critical section */ + sm_V(&p_fs->v_sem); + + return err; +} /* end of FsGetVolInfo */ + +/* FsSyncVol : synchronize a file system volume */ +int FsSyncVol(struct super_block *sb, int do_sync) +{ + int err; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + /* acquire the lock for file system critical section */ + sm_P(&p_fs->v_sem); + + err = ffsSyncVol(sb, do_sync); + + /* release the lock for file system critical section */ + sm_V(&p_fs->v_sem); + + return err; +} /* end of FsSyncVol */ + + +/*----------------------------------------------------------------------*/ +/* File Operation Functions */ +/*----------------------------------------------------------------------*/ + +/* FsCreateFile : create a file */ +int FsLookupFile(struct inode *inode, char *path, FILE_ID_T *fid) +{ + int err; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + /* check the validity of pointer parameters */ + if ((fid == NULL) || (path == NULL) || (*path == '\0')) + return FFS_ERROR; + + /* acquire the lock for file system critical section */ + sm_P(&p_fs->v_sem); + + err = ffsLookupFile(inode, path, fid); + + /* release the lock for file system critical section */ + sm_V(&p_fs->v_sem); + + return err; +} /* end of FsLookupFile */ + +/* FsCreateFile : create a file */ +int FsCreateFile(struct inode *inode, char *path, u8 mode, FILE_ID_T *fid) +{ + int err; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + /* check the validity of pointer parameters */ + if ((fid == NULL) || (path == NULL) || (*path == '\0')) + return FFS_ERROR; + + /* acquire the lock for file system critical section */ + sm_P(&p_fs->v_sem); + + err = ffsCreateFile(inode, path, mode, fid); + + /* release the lock for file system critical section */ + sm_V(&p_fs->v_sem); + + return err; +} /* end of FsCreateFile */ + +int FsReadFile(struct inode *inode, FILE_ID_T *fid, void *buffer, u64 count, u64 *rcount) +{ + int err; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + /* check the validity of the given file id */ + if (fid == NULL) + return FFS_INVALIDFID; + + /* check the validity of pointer parameters */ + if (buffer == NULL) + return FFS_ERROR; + + /* acquire the lock for file system critical section */ + sm_P(&p_fs->v_sem); + + err = ffsReadFile(inode, fid, buffer, count, rcount); + + /* release the lock for file system critical section */ + sm_V(&p_fs->v_sem); + + return err; +} /* end of FsReadFile */ + +int FsWriteFile(struct inode *inode, FILE_ID_T *fid, void *buffer, u64 count, u64 *wcount) +{ + int err; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + /* check the validity of the given file id */ + if (fid == NULL) + return FFS_INVALIDFID; + + /* check the validity of pointer parameters */ + if (buffer == NULL) + return FFS_ERROR; + + /* acquire the lock for file system critical section */ + sm_P(&p_fs->v_sem); + + err = ffsWriteFile(inode, fid, buffer, count, wcount); + + /* release the lock for file system critical section */ + sm_V(&p_fs->v_sem); + + return err; +} /* end of FsWriteFile */ + +/* FsTruncateFile : resize the file length */ +int FsTruncateFile(struct inode *inode, u64 old_size, u64 new_size) +{ + int err; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + /* acquire the lock for file system critical section */ + sm_P(&p_fs->v_sem); + + DPRINTK("FsTruncateFile entered (inode %p size %llu)\n", inode, new_size); + + err = ffsTruncateFile(inode, old_size, new_size); + + DPRINTK("FsTruncateFile exitted (%d)\n", err); + + /* release the lock for file system critical section */ + sm_V(&p_fs->v_sem); + + return err; +} /* end of FsTruncateFile */ + +/* FsMoveFile : move(rename) a old file into a new file */ +int FsMoveFile(struct inode *old_parent_inode, FILE_ID_T *fid, struct inode *new_parent_inode, struct dentry *new_dentry) +{ + int err; + struct super_block *sb = old_parent_inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + /* check the validity of the given file id */ + if (fid == NULL) + return FFS_INVALIDFID; + + /* acquire the lock for file system critical section */ + sm_P(&p_fs->v_sem); + + err = ffsMoveFile(old_parent_inode, fid, new_parent_inode, new_dentry); + + /* release the lock for file system critical section */ + sm_V(&p_fs->v_sem); + + return err; +} /* end of FsMoveFile */ + +/* FsRemoveFile : remove a file */ +int FsRemoveFile(struct inode *inode, FILE_ID_T *fid) +{ + int err; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + /* check the validity of the given file id */ + if (fid == NULL) + return FFS_INVALIDFID; + + /* acquire the lock for file system critical section */ + sm_P(&p_fs->v_sem); + + err = ffsRemoveFile(inode, fid); + + /* release the lock for file system critical section */ + sm_V(&p_fs->v_sem); + + return err; +} /* end of FsRemoveFile */ + +/* FsSetAttr : set the attribute of a given file */ +int FsSetAttr(struct inode *inode, u32 attr) +{ + int err; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + /* acquire the lock for file system critical section */ + sm_P(&p_fs->v_sem); + + err = ffsSetAttr(inode, attr); + + /* release the lock for file system critical section */ + sm_V(&p_fs->v_sem); + + return err; +} /* end of FsSetAttr */ + +/* FsReadStat : get the information of a given file */ +int FsReadStat(struct inode *inode, DIR_ENTRY_T *info) +{ + int err; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + /* acquire the lock for file system critical section */ + sm_P(&p_fs->v_sem); + + err = ffsGetStat(inode, info); + + /* release the lock for file system critical section */ + sm_V(&p_fs->v_sem); + + return err; +} /* end of FsReadStat */ + +/* FsWriteStat : set the information of a given file */ +int FsWriteStat(struct inode *inode, DIR_ENTRY_T *info) +{ + int err; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + /* acquire the lock for file system critical section */ + sm_P(&p_fs->v_sem); + + DPRINTK("FsWriteStat entered (inode %p info %p\n", inode, info); + + err = ffsSetStat(inode, info); + + /* release the lock for file system critical section */ + sm_V(&p_fs->v_sem); + + DPRINTK("FsWriteStat exited (%d)\n", err); + + return err; +} /* end of FsWriteStat */ + +/* FsMapCluster : return the cluster number in the given cluster offset */ +int FsMapCluster(struct inode *inode, s32 clu_offset, u32 *clu) +{ + int err; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + /* check the validity of pointer parameters */ + if (clu == NULL) + return FFS_ERROR; + + /* acquire the lock for file system critical section */ + sm_P(&p_fs->v_sem); + + err = ffsMapCluster(inode, clu_offset, clu); + + /* release the lock for file system critical section */ + sm_V(&p_fs->v_sem); + + return err; +} /* end of FsMapCluster */ + +/*----------------------------------------------------------------------*/ +/* Directory Operation Functions */ +/*----------------------------------------------------------------------*/ + +/* FsCreateDir : create(make) a directory */ +int FsCreateDir(struct inode *inode, char *path, FILE_ID_T *fid) +{ + int err; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + /* check the validity of pointer parameters */ + if ((fid == NULL) || (path == NULL) || (*path == '\0')) + return FFS_ERROR; + + /* acquire the lock for file system critical section */ + sm_P(&p_fs->v_sem); + + err = ffsCreateDir(inode, path, fid); + + /* release the lock for file system critical section */ + sm_V(&p_fs->v_sem); + + return err; +} /* end of FsCreateDir */ + +/* FsReadDir : read a directory entry from the opened directory */ +int FsReadDir(struct inode *inode, DIR_ENTRY_T *dir_entry) +{ + int err; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + /* check the validity of pointer parameters */ + if (dir_entry == NULL) + return FFS_ERROR; + + /* acquire the lock for file system critical section */ + sm_P(&p_fs->v_sem); + + err = ffsReadDir(inode, dir_entry); + + /* release the lock for file system critical section */ + sm_V(&p_fs->v_sem); + + return err; +} /* end of FsReadDir */ + +/* FsRemoveDir : remove a directory */ +int FsRemoveDir(struct inode *inode, FILE_ID_T *fid) +{ + int err; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + /* check the validity of the given file id */ + if (fid == NULL) + return FFS_INVALIDFID; + + /* acquire the lock for file system critical section */ + sm_P(&p_fs->v_sem); + + err = ffsRemoveDir(inode, fid); + + /* release the lock for file system critical section */ + sm_V(&p_fs->v_sem); + + return err; +} /* end of FsRemoveDir */ + +EXPORT_SYMBOL(FsMountVol); +EXPORT_SYMBOL(FsUmountVol); +EXPORT_SYMBOL(FsGetVolInfo); +EXPORT_SYMBOL(FsSyncVol); +EXPORT_SYMBOL(FsLookupFile); +EXPORT_SYMBOL(FsCreateFile); +EXPORT_SYMBOL(FsReadFile); +EXPORT_SYMBOL(FsWriteFile); +EXPORT_SYMBOL(FsTruncateFile); +EXPORT_SYMBOL(FsMoveFile); +EXPORT_SYMBOL(FsRemoveFile); +EXPORT_SYMBOL(FsSetAttr); +EXPORT_SYMBOL(FsReadStat); +EXPORT_SYMBOL(FsWriteStat); +EXPORT_SYMBOL(FsMapCluster); +EXPORT_SYMBOL(FsCreateDir); +EXPORT_SYMBOL(FsReadDir); +EXPORT_SYMBOL(FsRemoveDir); + +#ifdef CONFIG_EXFAT_KERNEL_DEBUG +/* FsReleaseCache: Release FAT & buf cache */ +int FsReleaseCache(struct super_block *sb) +{ + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + /* acquire the lock for file system critical section */ + sm_P(&p_fs->v_sem); + + FAT_release_all(sb); + buf_release_all(sb); + + /* release the lock for file system critical section */ + sm_V(&p_fs->v_sem); + + return 0; +} +/* FsReleaseCache */ + +EXPORT_SYMBOL(FsReleaseCache); +#endif /* CONFIG_EXFAT_KERNEL_DEBUG */ + +/*======================================================================*/ +/* Local Function Definitions */ +/*======================================================================*/ diff --git a/fs/exfat/exfat_api.h b/fs/exfat/exfat_api.h new file mode 100644 index 00000000000..84bdf612a1e --- /dev/null +++ b/fs/exfat/exfat_api.h @@ -0,0 +1,206 @@ +/* + * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/************************************************************************/ +/* */ +/* PROJECT : exFAT & FAT12/16/32 File System */ +/* FILE : exfat_api.h */ +/* PURPOSE : Header File for exFAT API Glue Layer */ +/* */ +/*----------------------------------------------------------------------*/ +/* NOTES */ +/* */ +/*----------------------------------------------------------------------*/ +/* REVISION HISTORY (Ver 0.9) */ +/* */ +/* - 2010.11.15 [Joosun Hahn] : first writing */ +/* */ +/************************************************************************/ + +#ifndef _EXFAT_API_H +#define _EXFAT_API_H + +#include +#include "exfat_config.h" + +/*----------------------------------------------------------------------*/ +/* Constant & Macro Definitions */ +/*----------------------------------------------------------------------*/ + +#define EXFAT_SUPER_MAGIC (0x2011BAB0L) +#define EXFAT_ROOT_INO 1 + +/* FAT types */ +#define FAT12 0x01 /* FAT12 */ +#define FAT16 0x0E /* Win95 FAT16 (LBA) */ +#define FAT32 0x0C /* Win95 FAT32 (LBA) */ +#define EXFAT 0x07 /* exFAT */ + +/* file name lengths */ +#define MAX_CHARSET_SIZE 3 /* max size of multi-byte character */ +#define MAX_PATH_DEPTH 15 /* max depth of path name */ +#define MAX_NAME_LENGTH 256 /* max len of file name including NULL */ +#define MAX_PATH_LENGTH 260 /* max len of path name including NULL */ +#define DOS_NAME_LENGTH 11 /* DOS file name length excluding NULL */ +#define DOS_PATH_LENGTH 80 /* DOS path name length excluding NULL */ + +/* file attributes */ +#define ATTR_NORMAL 0x0000 +#define ATTR_READONLY 0x0001 +#define ATTR_HIDDEN 0x0002 +#define ATTR_SYSTEM 0x0004 +#define ATTR_VOLUME 0x0008 +#define ATTR_SUBDIR 0x0010 +#define ATTR_ARCHIVE 0x0020 +#define ATTR_SYMLINK 0x0040 +#define ATTR_EXTEND 0x000F +#define ATTR_RWMASK 0x007E + +/* file creation modes */ +#define FM_REGULAR 0x00 +#define FM_SYMLINK 0x40 + +/* return values */ +#define FFS_SUCCESS 0 +#define FFS_MEDIAERR 1 +#define FFS_FORMATERR 2 +#define FFS_MOUNTED 3 +#define FFS_NOTMOUNTED 4 +#define FFS_ALIGNMENTERR 5 +#define FFS_SEMAPHOREERR 6 +#define FFS_INVALIDPATH 7 +#define FFS_INVALIDFID 8 +#define FFS_NOTFOUND 9 +#define FFS_FILEEXIST 10 +#define FFS_PERMISSIONERR 11 +#define FFS_NOTOPENED 12 +#define FFS_MAXOPENED 13 +#define FFS_FULL 14 +#define FFS_EOF 15 +#define FFS_DIRBUSY 16 +#define FFS_MEMORYERR 17 +#define FFS_NAMETOOLONG 18 +#define FFS_ERROR 19 + +/*----------------------------------------------------------------------*/ +/* Type Definitions */ +/*----------------------------------------------------------------------*/ + +typedef struct { + u16 Year; + u16 Month; + u16 Day; + u16 Hour; + u16 Minute; + u16 Second; + u16 MilliSecond; +} DATE_TIME_T; + +typedef struct { + u32 Offset; /* start sector number of the partition */ + u32 Size; /* in sectors */ +} PART_INFO_T; + +typedef struct { + u32 SecSize; /* sector size in bytes */ + u32 DevSize; /* block device size in sectors */ +} DEV_INFO_T; + +typedef struct { + u32 FatType; + u32 ClusterSize; + u32 NumClusters; + u32 FreeClusters; + u32 UsedClusters; +} VOL_INFO_T; + +/* directory structure */ +typedef struct { + u32 dir; + s32 size; + u8 flags; +} CHAIN_T; + +/* file id structure */ +typedef struct { + CHAIN_T dir; + s32 entry; + u32 type; + u32 attr; + u32 start_clu; + u64 size; + u8 flags; + s64 rwoffset; + s32 hint_last_off; + u32 hint_last_clu; +} FILE_ID_T; + +typedef struct { + char Name[MAX_NAME_LENGTH * MAX_CHARSET_SIZE]; + char ShortName[DOS_NAME_LENGTH + 2]; /* used only for FAT12/16/32, not used for exFAT */ + u32 Attr; + u64 Size; + u32 NumSubdirs; + DATE_TIME_T CreateTimestamp; + DATE_TIME_T ModifyTimestamp; + DATE_TIME_T AccessTimestamp; +} DIR_ENTRY_T; + +/*======================================================================*/ +/* */ +/* API FUNCTION DECLARATIONS */ +/* (CHANGE THIS PART IF REQUIRED) */ +/* */ +/*======================================================================*/ + +/*----------------------------------------------------------------------*/ +/* External Function Declarations */ +/*----------------------------------------------------------------------*/ + +/* file system initialization & shutdown functions */ + int FsInit(void); + int FsShutdown(void); + +/* volume management functions */ + int FsMountVol(struct super_block *sb); + int FsUmountVol(struct super_block *sb); + int FsGetVolInfo(struct super_block *sb, VOL_INFO_T *info); + int FsSyncVol(struct super_block *sb, int do_sync); + +/* file management functions */ + int FsLookupFile(struct inode *inode, char *path, FILE_ID_T *fid); + int FsCreateFile(struct inode *inode, char *path, u8 mode, FILE_ID_T *fid); + int FsReadFile(struct inode *inode, FILE_ID_T *fid, void *buffer, u64 count, u64 *rcount); + int FsWriteFile(struct inode *inode, FILE_ID_T *fid, void *buffer, u64 count, u64 *wcount); + int FsTruncateFile(struct inode *inode, u64 old_size, u64 new_size); + int FsMoveFile(struct inode *old_parent_inode, FILE_ID_T *fid, struct inode *new_parent_inode, struct dentry *new_dentry); + int FsRemoveFile(struct inode *inode, FILE_ID_T *fid); + int FsSetAttr(struct inode *inode, u32 attr); + int FsReadStat(struct inode *inode, DIR_ENTRY_T *info); + int FsWriteStat(struct inode *inode, DIR_ENTRY_T *info); + int FsMapCluster(struct inode *inode, s32 clu_offset, u32 *clu); + +/* directory management functions */ + int FsCreateDir(struct inode *inode, char *path, FILE_ID_T *fid); + int FsReadDir(struct inode *inode, DIR_ENTRY_T *dir_entry); + int FsRemoveDir(struct inode *inode, FILE_ID_T *fid); + +/* debug functions */ +s32 FsReleaseCache(struct super_block *sb); + +#endif /* _EXFAT_API_H */ diff --git a/fs/exfat/exfat_bitmap.c b/fs/exfat/exfat_bitmap.c new file mode 100644 index 00000000000..b0672dd073f --- /dev/null +++ b/fs/exfat/exfat_bitmap.c @@ -0,0 +1,63 @@ +/* + * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/************************************************************************/ +/* */ +/* PROJECT : exFAT & FAT12/16/32 File System */ +/* FILE : exfat_global.c */ +/* PURPOSE : exFAT Miscellaneous Functions */ +/* */ +/*----------------------------------------------------------------------*/ +/* NOTES */ +/* */ +/*----------------------------------------------------------------------*/ +/* REVISION HISTORY (Ver 0.9) */ +/* */ +/* - 2010.11.15 [Joosun Hahn] : first writing */ +/* */ +/************************************************************************/ + +#include "exfat_config.h" +#include "exfat_bitmap.h" + +/*----------------------------------------------------------------------*/ +/* Bitmap Manipulation Functions */ +/*----------------------------------------------------------------------*/ + +#define BITMAP_LOC(v) ((v) >> 3) +#define BITMAP_SHIFT(v) ((v) & 0x07) + +s32 exfat_bitmap_test(u8 *bitmap, int i) +{ + u8 data; + + data = bitmap[BITMAP_LOC(i)]; + if ((data >> BITMAP_SHIFT(i)) & 0x01) + return 1; + return 0; +} /* end of Bitmap_test */ + +void exfat_bitmap_set(u8 *bitmap, int i) +{ + bitmap[BITMAP_LOC(i)] |= (0x01 << BITMAP_SHIFT(i)); +} /* end of Bitmap_set */ + +void exfat_bitmap_clear(u8 *bitmap, int i) +{ + bitmap[BITMAP_LOC(i)] &= ~(0x01 << BITMAP_SHIFT(i)); +} /* end of Bitmap_clear */ diff --git a/fs/exfat/exfat_bitmap.h b/fs/exfat/exfat_bitmap.h new file mode 100644 index 00000000000..4f482c7b28c --- /dev/null +++ b/fs/exfat/exfat_bitmap.h @@ -0,0 +1,55 @@ +/* + * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/************************************************************************/ +/* */ +/* PROJECT : exFAT & FAT12/16/32 File System */ +/* FILE : exfat_global.h */ +/* PURPOSE : Header File for exFAT Global Definitions & Misc Functions */ +/* */ +/*----------------------------------------------------------------------*/ +/* NOTES */ +/* */ +/*----------------------------------------------------------------------*/ +/* REVISION HISTORY (Ver 0.9) */ +/* */ +/* - 2010.11.15 [Joosun Hahn] : first writing */ +/* */ +/************************************************************************/ + +#ifndef _EXFAT_BITMAP_H +#define _EXFAT_BITMAP_H + +#include + +/*======================================================================*/ +/* */ +/* LIBRARY FUNCTION DECLARATIONS -- OTHER UTILITY FUNCTIONS */ +/* (DO NOT CHANGE THIS PART !!) */ +/* */ +/*======================================================================*/ + +/*----------------------------------------------------------------------*/ +/* Bitmap Manipulation Functions */ +/*----------------------------------------------------------------------*/ + +s32 exfat_bitmap_test(u8 *bitmap, int i); +void exfat_bitmap_set(u8 *bitmap, int i); +void exfat_bitmap_clear(u8 *bitmpa, int i); + +#endif /* _EXFAT_BITMAP_H */ diff --git a/fs/exfat/exfat_blkdev.c b/fs/exfat/exfat_blkdev.c new file mode 100644 index 00000000000..eaccfd84e9f --- /dev/null +++ b/fs/exfat/exfat_blkdev.c @@ -0,0 +1,197 @@ +/* + * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/************************************************************************/ +/* */ +/* PROJECT : exFAT & FAT12/16/32 File System */ +/* FILE : exfat_blkdev.c */ +/* PURPOSE : exFAT Block Device Driver Glue Layer */ +/* */ +/*----------------------------------------------------------------------*/ +/* NOTES */ +/* */ +/*----------------------------------------------------------------------*/ +/* REVISION HISTORY (Ver 0.9) */ +/* */ +/* - 2010.11.15 [Joosun Hahn] : first writing */ +/* */ +/************************************************************************/ + +#include +#include +#include "exfat_config.h" +#include "exfat_blkdev.h" +#include "exfat_data.h" +#include "exfat_api.h" +#include "exfat_super.h" + +/*----------------------------------------------------------------------*/ +/* Constant & Macro Definitions */ +/*----------------------------------------------------------------------*/ + +/*----------------------------------------------------------------------*/ +/* Global Variable Definitions */ +/*----------------------------------------------------------------------*/ + +/*----------------------------------------------------------------------*/ +/* Local Variable Definitions */ +/*----------------------------------------------------------------------*/ + +/*======================================================================*/ +/* Function Definitions */ +/*======================================================================*/ + +s32 bdev_init(void) +{ + return FFS_SUCCESS; +} + +s32 bdev_shutdown(void) +{ + return FFS_SUCCESS; +} + +s32 bdev_open(struct super_block *sb) +{ + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + + if (p_bd->opened) + return FFS_SUCCESS; + + p_bd->sector_size = bdev_logical_block_size(sb->s_bdev); + p_bd->sector_size_bits = ilog2(p_bd->sector_size); + p_bd->sector_size_mask = p_bd->sector_size - 1; + p_bd->num_sectors = i_size_read(sb->s_bdev->bd_inode) >> p_bd->sector_size_bits; + + p_bd->opened = TRUE; + + return FFS_SUCCESS; +} + +s32 bdev_close(struct super_block *sb) +{ + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + + if (!p_bd->opened) + return FFS_SUCCESS; + + p_bd->opened = FALSE; + return FFS_SUCCESS; +} + +s32 bdev_read(struct super_block *sb, sector_t secno, struct buffer_head **bh, u32 num_secs, s32 read) +{ + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); +#ifdef CONFIG_EXFAT_KERNEL_DEBUG + struct exfat_sb_info *sbi = EXFAT_SB(sb); + long flags = sbi->debug_flags; + + if (flags & EXFAT_DEBUGFLAGS_ERROR_RW) + return FFS_MEDIAERR; +#endif /* CONFIG_EXFAT_KERNEL_DEBUG */ + + if (!p_bd->opened) + return FFS_MEDIAERR; + + if (*bh) + __brelse(*bh); + + if (read) + *bh = __bread(sb->s_bdev, secno, num_secs << p_bd->sector_size_bits); + else + *bh = __getblk(sb->s_bdev, secno, num_secs << p_bd->sector_size_bits); + + if (*bh) + return FFS_SUCCESS; + + WARN(!p_fs->dev_ejected, + "[EXFAT] No bh, device seems wrong or to be ejected.\n"); + + return FFS_MEDIAERR; +} + +s32 bdev_write(struct super_block *sb, sector_t secno, struct buffer_head *bh, u32 num_secs, s32 sync) +{ + s32 count; + struct buffer_head *bh2; + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); +#ifdef CONFIG_EXFAT_KERNEL_DEBUG + struct exfat_sb_info *sbi = EXFAT_SB(sb); + long flags = sbi->debug_flags; + + if (flags & EXFAT_DEBUGFLAGS_ERROR_RW) + return FFS_MEDIAERR; +#endif /* CONFIG_EXFAT_KERNEL_DEBUG */ + + if (!p_bd->opened) + return FFS_MEDIAERR; + + if (secno == bh->b_blocknr) { + lock_buffer(bh); + set_buffer_uptodate(bh); + mark_buffer_dirty(bh); + unlock_buffer(bh); + if (sync && (sync_dirty_buffer(bh) != 0)) + return FFS_MEDIAERR; + } else { + count = num_secs << p_bd->sector_size_bits; + + bh2 = __getblk(sb->s_bdev, secno, count); + + if (bh2 == NULL) + goto no_bh; + + lock_buffer(bh2); + memcpy(bh2->b_data, bh->b_data, count); + set_buffer_uptodate(bh2); + mark_buffer_dirty(bh2); + unlock_buffer(bh2); + if (sync && (sync_dirty_buffer(bh2) != 0)) { + __brelse(bh2); + goto no_bh; + } + __brelse(bh2); + } + + return FFS_SUCCESS; + +no_bh: + WARN(!p_fs->dev_ejected, + "[EXFAT] No bh, device seems wrong or to be ejected.\n"); + + return FFS_MEDIAERR; +} + +s32 bdev_sync(struct super_block *sb) +{ + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); +#ifdef CONFIG_EXFAT_KERNEL_DEBUG + struct exfat_sb_info *sbi = EXFAT_SB(sb); + long flags = sbi->debug_flags; + + if (flags & EXFAT_DEBUGFLAGS_ERROR_RW) + return FFS_MEDIAERR; +#endif /* CONFIG_EXFAT_KERNEL_DEBUG */ + + if (!p_bd->opened) + return FFS_MEDIAERR; + + return sync_blockdev(sb->s_bdev); +} diff --git a/fs/exfat/exfat_blkdev.h b/fs/exfat/exfat_blkdev.h new file mode 100644 index 00000000000..3363b591cae --- /dev/null +++ b/fs/exfat/exfat_blkdev.h @@ -0,0 +1,73 @@ +/* + * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/************************************************************************/ +/* */ +/* PROJECT : exFAT & FAT12/16/32 File System */ +/* FILE : exfat_blkdev.h */ +/* PURPOSE : Header File for exFAT Block Device Driver Glue Layer */ +/* */ +/*----------------------------------------------------------------------*/ +/* NOTES */ +/* */ +/*----------------------------------------------------------------------*/ +/* REVISION HISTORY (Ver 0.9) */ +/* */ +/* - 2010.11.15 [Joosun Hahn] : first writing */ +/* */ +/************************************************************************/ + +#ifndef _EXFAT_BLKDEV_H +#define _EXFAT_BLKDEV_H + +#include +#include "exfat_config.h" + +/*----------------------------------------------------------------------*/ +/* Constant & Macro Definitions (Non-Configurable) */ +/*----------------------------------------------------------------------*/ + +/*----------------------------------------------------------------------*/ +/* Type Definitions */ +/*----------------------------------------------------------------------*/ + +typedef struct __BD_INFO_T { + s32 sector_size; /* in bytes */ + s32 sector_size_bits; + s32 sector_size_mask; + s32 num_sectors; /* total number of sectors in this block device */ + bool opened; /* opened or not */ +} BD_INFO_T; + +/*----------------------------------------------------------------------*/ +/* External Variable Declarations */ +/*----------------------------------------------------------------------*/ + +/*----------------------------------------------------------------------*/ +/* External Function Declarations */ +/*----------------------------------------------------------------------*/ + +s32 bdev_init(void); +s32 bdev_shutdown(void); +s32 bdev_open(struct super_block *sb); +s32 bdev_close(struct super_block *sb); +s32 bdev_read(struct super_block *sb, sector_t secno, struct buffer_head **bh, u32 num_secs, s32 read); +s32 bdev_write(struct super_block *sb, sector_t secno, struct buffer_head *bh, u32 num_secs, s32 sync); +s32 bdev_sync(struct super_block *sb); + +#endif /* _EXFAT_BLKDEV_H */ diff --git a/fs/exfat/exfat_cache.c b/fs/exfat/exfat_cache.c new file mode 100644 index 00000000000..4130102e373 --- /dev/null +++ b/fs/exfat/exfat_cache.c @@ -0,0 +1,784 @@ +/* + * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/************************************************************************/ +/* */ +/* PROJECT : exFAT & FAT12/16/32 File System */ +/* FILE : exfat_cache.c */ +/* PURPOSE : exFAT Cache Manager */ +/* (FAT Cache & Buffer Cache) */ +/* */ +/*----------------------------------------------------------------------*/ +/* NOTES */ +/* */ +/*----------------------------------------------------------------------*/ +/* REVISION HISTORY (Ver 0.9) */ +/* */ +/* - 2010.11.15 [Sung-Kwan Kim] : first writing */ +/* */ +/************************************************************************/ + +#include "exfat_config.h" +#include "exfat_data.h" + +#include "exfat_cache.h" +#include "exfat_super.h" +#include "exfat_core.h" + +/*----------------------------------------------------------------------*/ +/* Global Variable Definitions */ +/*----------------------------------------------------------------------*/ + +#define sm_P(s) +#define sm_V(s) + +static s32 __FAT_read(struct super_block *sb, u32 loc, u32 *content); +static s32 __FAT_write(struct super_block *sb, u32 loc, u32 content); + +static BUF_CACHE_T *FAT_cache_find(struct super_block *sb, sector_t sec); +static BUF_CACHE_T *FAT_cache_get(struct super_block *sb, sector_t sec); +static void FAT_cache_insert_hash(struct super_block *sb, BUF_CACHE_T *bp); +static void FAT_cache_remove_hash(BUF_CACHE_T *bp); + +static u8 *__buf_getblk(struct super_block *sb, sector_t sec); + +static BUF_CACHE_T *buf_cache_find(struct super_block *sb, sector_t sec); +static BUF_CACHE_T *buf_cache_get(struct super_block *sb, sector_t sec); +static void buf_cache_insert_hash(struct super_block *sb, BUF_CACHE_T *bp); +static void buf_cache_remove_hash(BUF_CACHE_T *bp); + +static void push_to_mru(BUF_CACHE_T *bp, BUF_CACHE_T *list); +static void push_to_lru(BUF_CACHE_T *bp, BUF_CACHE_T *list); +static void move_to_mru(BUF_CACHE_T *bp, BUF_CACHE_T *list); +static void move_to_lru(BUF_CACHE_T *bp, BUF_CACHE_T *list); + +/*======================================================================*/ +/* Cache Initialization Functions */ +/*======================================================================*/ + +s32 buf_init(struct super_block *sb) +{ + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + int i; + + /* LRU list */ + p_fs->FAT_cache_lru_list.next = p_fs->FAT_cache_lru_list.prev = &p_fs->FAT_cache_lru_list; + + for (i = 0; i < FAT_CACHE_SIZE; i++) { + p_fs->FAT_cache_array[i].drv = -1; + p_fs->FAT_cache_array[i].sec = ~0; + p_fs->FAT_cache_array[i].flag = 0; + p_fs->FAT_cache_array[i].buf_bh = NULL; + p_fs->FAT_cache_array[i].prev = p_fs->FAT_cache_array[i].next = NULL; + push_to_mru(&(p_fs->FAT_cache_array[i]), &p_fs->FAT_cache_lru_list); + } + + p_fs->buf_cache_lru_list.next = p_fs->buf_cache_lru_list.prev = &p_fs->buf_cache_lru_list; + + for (i = 0; i < BUF_CACHE_SIZE; i++) { + p_fs->buf_cache_array[i].drv = -1; + p_fs->buf_cache_array[i].sec = ~0; + p_fs->buf_cache_array[i].flag = 0; + p_fs->buf_cache_array[i].buf_bh = NULL; + p_fs->buf_cache_array[i].prev = p_fs->buf_cache_array[i].next = NULL; + push_to_mru(&(p_fs->buf_cache_array[i]), &p_fs->buf_cache_lru_list); + } + + /* HASH list */ + for (i = 0; i < FAT_CACHE_HASH_SIZE; i++) { + p_fs->FAT_cache_hash_list[i].drv = -1; + p_fs->FAT_cache_hash_list[i].sec = ~0; + p_fs->FAT_cache_hash_list[i].hash_next = p_fs->FAT_cache_hash_list[i].hash_prev = &(p_fs->FAT_cache_hash_list[i]); + } + + for (i = 0; i < FAT_CACHE_SIZE; i++) + FAT_cache_insert_hash(sb, &(p_fs->FAT_cache_array[i])); + + for (i = 0; i < BUF_CACHE_HASH_SIZE; i++) { + p_fs->buf_cache_hash_list[i].drv = -1; + p_fs->buf_cache_hash_list[i].sec = ~0; + p_fs->buf_cache_hash_list[i].hash_next = p_fs->buf_cache_hash_list[i].hash_prev = &(p_fs->buf_cache_hash_list[i]); + } + + for (i = 0; i < BUF_CACHE_SIZE; i++) + buf_cache_insert_hash(sb, &(p_fs->buf_cache_array[i])); + + return FFS_SUCCESS; +} /* end of buf_init */ + +s32 buf_shutdown(struct super_block *sb) +{ + return FFS_SUCCESS; +} /* end of buf_shutdown */ + +/*======================================================================*/ +/* FAT Read/Write Functions */ +/*======================================================================*/ + +/* in : sb, loc + * out: content + * returns 0 on success + * -1 on error + */ +s32 FAT_read(struct super_block *sb, u32 loc, u32 *content) +{ + s32 ret; + + sm_P(&f_sem); + + ret = __FAT_read(sb, loc, content); + + sm_V(&f_sem); + + return ret; +} /* end of FAT_read */ + +s32 FAT_write(struct super_block *sb, u32 loc, u32 content) +{ + s32 ret; + + sm_P(&f_sem); + + ret = __FAT_write(sb, loc, content); + + sm_V(&f_sem); + + return ret; +} /* end of FAT_write */ + +static s32 __FAT_read(struct super_block *sb, u32 loc, u32 *content) +{ + s32 off; + u32 _content; + sector_t sec; + u8 *fat_sector, *fat_entry; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + + if (p_fs->vol_type == FAT12) { + sec = p_fs->FAT1_start_sector + ((loc + (loc >> 1)) >> p_bd->sector_size_bits); + off = (loc + (loc >> 1)) & p_bd->sector_size_mask; + + if (off == (p_bd->sector_size-1)) { + fat_sector = FAT_getblk(sb, sec); + if (!fat_sector) + return -1; + + _content = (u32) fat_sector[off]; + + fat_sector = FAT_getblk(sb, ++sec); + if (!fat_sector) + return -1; + + _content |= (u32) fat_sector[0] << 8; + } else { + fat_sector = FAT_getblk(sb, sec); + if (!fat_sector) + return -1; + + fat_entry = &(fat_sector[off]); + _content = GET16(fat_entry); + } + + if (loc & 1) + _content >>= 4; + + _content &= 0x00000FFF; + + if (_content >= CLUSTER_16(0x0FF8)) { + *content = CLUSTER_32(~0); + return 0; + } else { + *content = CLUSTER_32(_content); + return 0; + } + } else if (p_fs->vol_type == FAT16) { + sec = p_fs->FAT1_start_sector + (loc >> (p_bd->sector_size_bits-1)); + off = (loc << 1) & p_bd->sector_size_mask; + + fat_sector = FAT_getblk(sb, sec); + if (!fat_sector) + return -1; + + fat_entry = &(fat_sector[off]); + + _content = GET16_A(fat_entry); + + _content &= 0x0000FFFF; + + if (_content >= CLUSTER_16(0xFFF8)) { + *content = CLUSTER_32(~0); + return 0; + } else { + *content = CLUSTER_32(_content); + return 0; + } + } else if (p_fs->vol_type == FAT32) { + sec = p_fs->FAT1_start_sector + (loc >> (p_bd->sector_size_bits-2)); + off = (loc << 2) & p_bd->sector_size_mask; + + fat_sector = FAT_getblk(sb, sec); + if (!fat_sector) + return -1; + + fat_entry = &(fat_sector[off]); + + _content = GET32_A(fat_entry); + + _content &= 0x0FFFFFFF; + + if (_content >= CLUSTER_32(0x0FFFFFF8)) { + *content = CLUSTER_32(~0); + return 0; + } else { + *content = CLUSTER_32(_content); + return 0; + } + } else { + sec = p_fs->FAT1_start_sector + (loc >> (p_bd->sector_size_bits-2)); + off = (loc << 2) & p_bd->sector_size_mask; + + fat_sector = FAT_getblk(sb, sec); + if (!fat_sector) + return -1; + + fat_entry = &(fat_sector[off]); + _content = GET32_A(fat_entry); + + if (_content >= CLUSTER_32(0xFFFFFFF8)) { + *content = CLUSTER_32(~0); + return 0; + } else { + *content = CLUSTER_32(_content); + return 0; + } + } + + *content = CLUSTER_32(~0); + return 0; +} /* end of __FAT_read */ + +static s32 __FAT_write(struct super_block *sb, u32 loc, u32 content) +{ + s32 off; + sector_t sec; + u8 *fat_sector, *fat_entry; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + + if (p_fs->vol_type == FAT12) { + + content &= 0x00000FFF; + + sec = p_fs->FAT1_start_sector + ((loc + (loc >> 1)) >> p_bd->sector_size_bits); + off = (loc + (loc >> 1)) & p_bd->sector_size_mask; + + fat_sector = FAT_getblk(sb, sec); + if (!fat_sector) + return -1; + + if (loc & 1) { /* odd */ + + content <<= 4; + + if (off == (p_bd->sector_size-1)) { + fat_sector[off] = (u8)(content | (fat_sector[off] & 0x0F)); + FAT_modify(sb, sec); + + fat_sector = FAT_getblk(sb, ++sec); + if (!fat_sector) + return -1; + + fat_sector[0] = (u8)(content >> 8); + } else { + fat_entry = &(fat_sector[off]); + content |= GET16(fat_entry) & 0x000F; + + SET16(fat_entry, content); + } + } else { /* even */ + fat_sector[off] = (u8)(content); + + if (off == (p_bd->sector_size-1)) { + fat_sector[off] = (u8)(content); + FAT_modify(sb, sec); + + fat_sector = FAT_getblk(sb, ++sec); + fat_sector[0] = (u8)((fat_sector[0] & 0xF0) | (content >> 8)); + } else { + fat_entry = &(fat_sector[off]); + content |= GET16(fat_entry) & 0xF000; + + SET16(fat_entry, content); + } + } + } + + else if (p_fs->vol_type == FAT16) { + + content &= 0x0000FFFF; + + sec = p_fs->FAT1_start_sector + (loc >> (p_bd->sector_size_bits-1)); + off = (loc << 1) & p_bd->sector_size_mask; + + fat_sector = FAT_getblk(sb, sec); + if (!fat_sector) + return -1; + + fat_entry = &(fat_sector[off]); + + SET16_A(fat_entry, content); + } + + else if (p_fs->vol_type == FAT32) { + + content &= 0x0FFFFFFF; + + sec = p_fs->FAT1_start_sector + (loc >> (p_bd->sector_size_bits-2)); + off = (loc << 2) & p_bd->sector_size_mask; + + fat_sector = FAT_getblk(sb, sec); + if (!fat_sector) + return -1; + + fat_entry = &(fat_sector[off]); + + content |= GET32_A(fat_entry) & 0xF0000000; + + SET32_A(fat_entry, content); + } + + else { /* p_fs->vol_type == EXFAT */ + + sec = p_fs->FAT1_start_sector + (loc >> (p_bd->sector_size_bits-2)); + off = (loc << 2) & p_bd->sector_size_mask; + + fat_sector = FAT_getblk(sb, sec); + if (!fat_sector) + return -1; + + fat_entry = &(fat_sector[off]); + + SET32_A(fat_entry, content); + } + + FAT_modify(sb, sec); + return 0; +} /* end of __FAT_write */ + +u8 *FAT_getblk(struct super_block *sb, sector_t sec) +{ + BUF_CACHE_T *bp; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + bp = FAT_cache_find(sb, sec); + if (bp != NULL) { + move_to_mru(bp, &p_fs->FAT_cache_lru_list); + return bp->buf_bh->b_data; + } + + bp = FAT_cache_get(sb, sec); + + FAT_cache_remove_hash(bp); + + bp->drv = p_fs->drv; + bp->sec = sec; + bp->flag = 0; + + FAT_cache_insert_hash(sb, bp); + + if (sector_read(sb, sec, &(bp->buf_bh), 1) != FFS_SUCCESS) { + FAT_cache_remove_hash(bp); + bp->drv = -1; + bp->sec = ~0; + bp->flag = 0; + bp->buf_bh = NULL; + + move_to_lru(bp, &p_fs->FAT_cache_lru_list); + return NULL; + } + + return bp->buf_bh->b_data; +} /* end of FAT_getblk */ + +void FAT_modify(struct super_block *sb, sector_t sec) +{ + BUF_CACHE_T *bp; + + bp = FAT_cache_find(sb, sec); + if (bp != NULL) + sector_write(sb, sec, bp->buf_bh, 0); +} /* end of FAT_modify */ + +void FAT_release_all(struct super_block *sb) +{ + BUF_CACHE_T *bp; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + sm_P(&f_sem); + + bp = p_fs->FAT_cache_lru_list.next; + while (bp != &p_fs->FAT_cache_lru_list) { + if (bp->drv == p_fs->drv) { + bp->drv = -1; + bp->sec = ~0; + bp->flag = 0; + + if (bp->buf_bh) { + __brelse(bp->buf_bh); + bp->buf_bh = NULL; + } + } + bp = bp->next; + } + + sm_V(&f_sem); +} /* end of FAT_release_all */ + +void FAT_sync(struct super_block *sb) +{ + BUF_CACHE_T *bp; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + sm_P(&f_sem); + + bp = p_fs->FAT_cache_lru_list.next; + while (bp != &p_fs->FAT_cache_lru_list) { + if ((bp->drv == p_fs->drv) && (bp->flag & DIRTYBIT)) { + sync_dirty_buffer(bp->buf_bh); + bp->flag &= ~(DIRTYBIT); + } + bp = bp->next; + } + + sm_V(&f_sem); +} /* end of FAT_sync */ + +static BUF_CACHE_T *FAT_cache_find(struct super_block *sb, sector_t sec) +{ + s32 off; + BUF_CACHE_T *bp, *hp; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + off = (sec + (sec >> p_fs->sectors_per_clu_bits)) & (FAT_CACHE_HASH_SIZE - 1); + + hp = &(p_fs->FAT_cache_hash_list[off]); + for (bp = hp->hash_next; bp != hp; bp = bp->hash_next) { + if ((bp->drv == p_fs->drv) && (bp->sec == sec)) { + + WARN(!bp->buf_bh, "[EXFAT] FAT_cache has no bh. " + "It will make system panic.\n"); + + touch_buffer(bp->buf_bh); + return bp; + } + } + return NULL; +} /* end of FAT_cache_find */ + +static BUF_CACHE_T *FAT_cache_get(struct super_block *sb, sector_t sec) +{ + BUF_CACHE_T *bp; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + bp = p_fs->FAT_cache_lru_list.prev; + + + move_to_mru(bp, &p_fs->FAT_cache_lru_list); + return bp; +} /* end of FAT_cache_get */ + +static void FAT_cache_insert_hash(struct super_block *sb, BUF_CACHE_T *bp) +{ + s32 off; + BUF_CACHE_T *hp; + FS_INFO_T *p_fs; + + p_fs = &(EXFAT_SB(sb)->fs_info); + off = (bp->sec + (bp->sec >> p_fs->sectors_per_clu_bits)) & (FAT_CACHE_HASH_SIZE-1); + + hp = &(p_fs->FAT_cache_hash_list[off]); + bp->hash_next = hp->hash_next; + bp->hash_prev = hp; + hp->hash_next->hash_prev = bp; + hp->hash_next = bp; +} /* end of FAT_cache_insert_hash */ + +static void FAT_cache_remove_hash(BUF_CACHE_T *bp) +{ + (bp->hash_prev)->hash_next = bp->hash_next; + (bp->hash_next)->hash_prev = bp->hash_prev; +} /* end of FAT_cache_remove_hash */ + +/*======================================================================*/ +/* Buffer Read/Write Functions */ +/*======================================================================*/ + +u8 *buf_getblk(struct super_block *sb, sector_t sec) +{ + u8 *buf; + + sm_P(&b_sem); + + buf = __buf_getblk(sb, sec); + + sm_V(&b_sem); + + return buf; +} /* end of buf_getblk */ + +static u8 *__buf_getblk(struct super_block *sb, sector_t sec) +{ + BUF_CACHE_T *bp; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + bp = buf_cache_find(sb, sec); + if (bp != NULL) { + move_to_mru(bp, &p_fs->buf_cache_lru_list); + return bp->buf_bh->b_data; + } + + bp = buf_cache_get(sb, sec); + + buf_cache_remove_hash(bp); + + bp->drv = p_fs->drv; + bp->sec = sec; + bp->flag = 0; + + buf_cache_insert_hash(sb, bp); + + if (sector_read(sb, sec, &(bp->buf_bh), 1) != FFS_SUCCESS) { + buf_cache_remove_hash(bp); + bp->drv = -1; + bp->sec = ~0; + bp->flag = 0; + bp->buf_bh = NULL; + + move_to_lru(bp, &p_fs->buf_cache_lru_list); + return NULL; + } + + return bp->buf_bh->b_data; + +} /* end of __buf_getblk */ + +void buf_modify(struct super_block *sb, sector_t sec) +{ + BUF_CACHE_T *bp; + + sm_P(&b_sem); + + bp = buf_cache_find(sb, sec); + if (likely(bp != NULL)) + sector_write(sb, sec, bp->buf_bh, 0); + + WARN(!bp, "[EXFAT] failed to find buffer_cache(sector:%llu).\n", + (unsigned long long)sec); + + sm_V(&b_sem); +} /* end of buf_modify */ + +void buf_lock(struct super_block *sb, sector_t sec) +{ + BUF_CACHE_T *bp; + + sm_P(&b_sem); + + bp = buf_cache_find(sb, sec); + if (likely(bp != NULL)) + bp->flag |= LOCKBIT; + + WARN(!bp, "[EXFAT] failed to find buffer_cache(sector:%llu).\n", + (unsigned long long)sec); + + sm_V(&b_sem); +} /* end of buf_lock */ + +void buf_unlock(struct super_block *sb, sector_t sec) +{ + BUF_CACHE_T *bp; + + sm_P(&b_sem); + + bp = buf_cache_find(sb, sec); + if (likely(bp != NULL)) + bp->flag &= ~(LOCKBIT); + + WARN(!bp, "[EXFAT] failed to find buffer_cache(sector:%llu).\n", + (unsigned long long)sec); + + sm_V(&b_sem); +} /* end of buf_unlock */ + +void buf_release(struct super_block *sb, sector_t sec) +{ + BUF_CACHE_T *bp; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + sm_P(&b_sem); + + bp = buf_cache_find(sb, sec); + if (likely(bp != NULL)) { + bp->drv = -1; + bp->sec = ~0; + bp->flag = 0; + + if (bp->buf_bh) { + __brelse(bp->buf_bh); + bp->buf_bh = NULL; + } + + move_to_lru(bp, &p_fs->buf_cache_lru_list); + } + + sm_V(&b_sem); +} /* end of buf_release */ + +void buf_release_all(struct super_block *sb) +{ + BUF_CACHE_T *bp; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + sm_P(&b_sem); + + bp = p_fs->buf_cache_lru_list.next; + while (bp != &p_fs->buf_cache_lru_list) { + if (bp->drv == p_fs->drv) { + bp->drv = -1; + bp->sec = ~0; + bp->flag = 0; + + if (bp->buf_bh) { + __brelse(bp->buf_bh); + bp->buf_bh = NULL; + } + } + bp = bp->next; + } + + sm_V(&b_sem); +} /* end of buf_release_all */ + +void buf_sync(struct super_block *sb) +{ + BUF_CACHE_T *bp; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + sm_P(&b_sem); + + bp = p_fs->buf_cache_lru_list.next; + while (bp != &p_fs->buf_cache_lru_list) { + if ((bp->drv == p_fs->drv) && (bp->flag & DIRTYBIT)) { + sync_dirty_buffer(bp->buf_bh); + bp->flag &= ~(DIRTYBIT); + } + bp = bp->next; + } + + sm_V(&b_sem); +} /* end of buf_sync */ + +static BUF_CACHE_T *buf_cache_find(struct super_block *sb, sector_t sec) +{ + s32 off; + BUF_CACHE_T *bp, *hp; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + off = (sec + (sec >> p_fs->sectors_per_clu_bits)) & (BUF_CACHE_HASH_SIZE - 1); + + hp = &(p_fs->buf_cache_hash_list[off]); + for (bp = hp->hash_next; bp != hp; bp = bp->hash_next) { + if ((bp->drv == p_fs->drv) && (bp->sec == sec)) { + touch_buffer(bp->buf_bh); + return bp; + } + } + return NULL; +} /* end of buf_cache_find */ + +static BUF_CACHE_T *buf_cache_get(struct super_block *sb, sector_t sec) +{ + BUF_CACHE_T *bp; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + bp = p_fs->buf_cache_lru_list.prev; + while (bp->flag & LOCKBIT) + bp = bp->prev; + + + move_to_mru(bp, &p_fs->buf_cache_lru_list); + return bp; +} /* end of buf_cache_get */ + +static void buf_cache_insert_hash(struct super_block *sb, BUF_CACHE_T *bp) +{ + s32 off; + BUF_CACHE_T *hp; + FS_INFO_T *p_fs; + + p_fs = &(EXFAT_SB(sb)->fs_info); + off = (bp->sec + (bp->sec >> p_fs->sectors_per_clu_bits)) & (BUF_CACHE_HASH_SIZE-1); + + hp = &(p_fs->buf_cache_hash_list[off]); + bp->hash_next = hp->hash_next; + bp->hash_prev = hp; + hp->hash_next->hash_prev = bp; + hp->hash_next = bp; +} /* end of buf_cache_insert_hash */ + +static void buf_cache_remove_hash(BUF_CACHE_T *bp) +{ + (bp->hash_prev)->hash_next = bp->hash_next; + (bp->hash_next)->hash_prev = bp->hash_prev; +} /* end of buf_cache_remove_hash */ + +/*======================================================================*/ +/* Local Function Definitions */ +/*======================================================================*/ + +static void push_to_mru(BUF_CACHE_T *bp, BUF_CACHE_T *list) +{ + bp->next = list->next; + bp->prev = list; + list->next->prev = bp; + list->next = bp; +} /* end of buf_cache_push_to_mru */ + +static void push_to_lru(BUF_CACHE_T *bp, BUF_CACHE_T *list) +{ + bp->prev = list->prev; + bp->next = list; + list->prev->next = bp; + list->prev = bp; +} /* end of buf_cache_push_to_lru */ + +static void move_to_mru(BUF_CACHE_T *bp, BUF_CACHE_T *list) +{ + bp->prev->next = bp->next; + bp->next->prev = bp->prev; + push_to_mru(bp, list); +} /* end of buf_cache_move_to_mru */ + +static void move_to_lru(BUF_CACHE_T *bp, BUF_CACHE_T *list) +{ + bp->prev->next = bp->next; + bp->next->prev = bp->prev; + push_to_lru(bp, list); +} /* end of buf_cache_move_to_lru */ diff --git a/fs/exfat/exfat_cache.h b/fs/exfat/exfat_cache.h new file mode 100644 index 00000000000..540e31681d0 --- /dev/null +++ b/fs/exfat/exfat_cache.h @@ -0,0 +1,85 @@ +/* + * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/************************************************************************/ +/* */ +/* PROJECT : exFAT & FAT12/16/32 File System */ +/* FILE : exfat_cache.h */ +/* PURPOSE : Header File for exFAT Cache Manager */ +/* (FAT Cache & Buffer Cache) */ +/* */ +/*----------------------------------------------------------------------*/ +/* NOTES */ +/* */ +/*----------------------------------------------------------------------*/ +/* REVISION HISTORY (Ver 0.9) */ +/* */ +/* - 2010.11.15 [Sung-Kwan Kim] : first writing */ +/* */ +/************************************************************************/ + +#ifndef _EXFAT_CACHE_H +#define _EXFAT_CACHE_H + +#include +#include +#include "exfat_config.h" + +/*----------------------------------------------------------------------*/ +/* Constant & Macro Definitions */ +/*----------------------------------------------------------------------*/ + +#define LOCKBIT 0x01 +#define DIRTYBIT 0x02 + +/*----------------------------------------------------------------------*/ +/* Type Definitions */ +/*----------------------------------------------------------------------*/ + +typedef struct __BUF_CACHE_T { + struct __BUF_CACHE_T *next; + struct __BUF_CACHE_T *prev; + struct __BUF_CACHE_T *hash_next; + struct __BUF_CACHE_T *hash_prev; + s32 drv; + sector_t sec; + u32 flag; + struct buffer_head *buf_bh; +} BUF_CACHE_T; + +/*----------------------------------------------------------------------*/ +/* External Function Declarations */ +/*----------------------------------------------------------------------*/ + +s32 buf_init(struct super_block *sb); +s32 buf_shutdown(struct super_block *sb); +s32 FAT_read(struct super_block *sb, u32 loc, u32 *content); +s32 FAT_write(struct super_block *sb, u32 loc, u32 content); +u8 *FAT_getblk(struct super_block *sb, sector_t sec); +void FAT_modify(struct super_block *sb, sector_t sec); +void FAT_release_all(struct super_block *sb); +void FAT_sync(struct super_block *sb); +u8 *buf_getblk(struct super_block *sb, sector_t sec); +void buf_modify(struct super_block *sb, sector_t sec); +void buf_lock(struct super_block *sb, sector_t sec); +void buf_unlock(struct super_block *sb, sector_t sec); +void buf_release(struct super_block *sb, sector_t sec); +void buf_release_all(struct super_block *sb); +void buf_sync(struct super_block *sb); + +#endif /* _EXFAT_CACHE_H */ diff --git a/fs/exfat/exfat_config.h b/fs/exfat/exfat_config.h new file mode 100644 index 00000000000..33c6525e449 --- /dev/null +++ b/fs/exfat/exfat_config.h @@ -0,0 +1,69 @@ +/* + * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/************************************************************************/ +/* */ +/* PROJECT : exFAT & FAT12/16/32 File System */ +/* FILE : exfat_config.h */ +/* PURPOSE : Header File for exFAT Configuable Policies */ +/* */ +/*----------------------------------------------------------------------*/ +/* NOTES */ +/* */ +/*----------------------------------------------------------------------*/ +/* REVISION HISTORY (Ver 0.9) */ +/* */ +/* - 2010.11.15 [Joosun Hahn] : first writing */ +/* */ +/************************************************************************/ + +#ifndef _EXFAT_CONFIG_H +#define _EXFAT_CONFIG_H + +/*======================================================================*/ +/* */ +/* FFS CONFIGURATIONS */ +/* (CHANGE THIS PART IF REQUIRED) */ +/* */ +/*======================================================================*/ + +/*----------------------------------------------------------------------*/ +/* Feature Config */ +/*----------------------------------------------------------------------*/ +#ifndef CONFIG_EXFAT_DISCARD +#define CONFIG_EXFAT_DISCARD 1 /* mount option -o discard support */ +#endif + +#ifndef CONFIG_EXFAT_DELAYED_SYNC +#define CONFIG_EXFAT_DELAYED_SYNC 0 +#endif + +#ifndef CONFIG_EXFAT_KERNEL_DEBUG +#define CONFIG_EXFAT_KERNEL_DEBUG 1 /* kernel debug features via ioctl */ +#endif + +#ifndef CONFIG_EXFAT_DEBUG_MSG +#define CONFIG_EXFAT_DEBUG_MSG 0 /* debugging message on/off */ +#endif + +#ifndef CONFIG_EXFAT_DEFAULT_CODEPAGE +#define CONFIG_EXFAT_DEFAULT_CODEPAGE 437 +#define CONFIG_EXFAT_DEFAULT_IOCHARSET "utf8" +#endif + +#endif /* _EXFAT_CONFIG_H */ diff --git a/fs/exfat/exfat_core.c b/fs/exfat/exfat_core.c new file mode 100644 index 00000000000..143b72155ef --- /dev/null +++ b/fs/exfat/exfat_core.c @@ -0,0 +1,5138 @@ +/* Some of the source code in this file came from "linux/fs/fat/misc.c". */ +/* + * linux/fs/fat/misc.c + * + * Written 1992,1993 by Werner Almesberger + * 22/11/2000 - Fixed fat_date_unix2dos for dates earlier than 01/01/1980 + * and date_dos2unix for date==0 by Igor Zhbanov(bsg@uniyar.ac.ru) + */ + +/* + * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/************************************************************************/ +/* */ +/* PROJECT : exFAT & FAT12/16/32 File System */ +/* FILE : exfat_core.c */ +/* PURPOSE : exFAT File Manager */ +/* */ +/*----------------------------------------------------------------------*/ +/* NOTES */ +/* */ +/*----------------------------------------------------------------------*/ +/* REVISION HISTORY (Ver 0.9) */ +/* */ +/* - 2010.11.15 [Joosun Hahn] : first writing */ +/* */ +/************************************************************************/ + +#include +#include +#include + +#include "exfat_bitmap.h" +#include "exfat_config.h" +#include "exfat_data.h" +#include "exfat_oal.h" +#include "exfat_blkdev.h" +#include "exfat_cache.h" +#include "exfat_nls.h" +#include "exfat_api.h" +#include "exfat_super.h" +#include "exfat_core.h" + +#include +#include + +static void __set_sb_dirty(struct super_block *sb) +{ +#if LINUX_VERSION_CODE < KERNEL_VERSION(3,7,0) + sb->s_dirt = 1; +#else + struct exfat_sb_info *sbi = EXFAT_SB(sb); + sbi->s_dirt = 1; +#endif +} + +/*----------------------------------------------------------------------*/ +/* Global Variable Definitions */ +/*----------------------------------------------------------------------*/ + +extern u8 uni_upcase[]; + +/*----------------------------------------------------------------------*/ +/* Local Variable Definitions */ +/*----------------------------------------------------------------------*/ + +static u8 name_buf[MAX_PATH_LENGTH * MAX_CHARSET_SIZE]; + +static char *reserved_names[] = { + "AUX ", "CON ", "NUL ", "PRN ", + "COM1 ", "COM2 ", "COM3 ", "COM4 ", + "COM5 ", "COM6 ", "COM7 ", "COM8 ", "COM9 ", + "LPT1 ", "LPT2 ", "LPT3 ", "LPT4 ", + "LPT5 ", "LPT6 ", "LPT7 ", "LPT8 ", "LPT9 ", + NULL +}; + +static u8 free_bit[] = { + 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, /* 0 ~ 19 */ + 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 5, 0, 1, 0, 2, 0, 1, 0, 3, /* 20 ~ 39 */ + 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, /* 40 ~ 59 */ + 0, 1, 0, 6, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, /* 60 ~ 79 */ + 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 5, 0, 1, 0, 2, /* 80 ~ 99 */ + 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, /* 100 ~ 119 */ + 0, 1, 0, 2, 0, 1, 0, 7, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, /* 120 ~ 139 */ + 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 5, /* 140 ~ 159 */ + 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, /* 160 ~ 179 */ + 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 6, 0, 1, 0, 2, 0, 1, 0, 3, /* 180 ~ 199 */ + 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, /* 200 ~ 219 */ + 0, 1, 0, 5, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, /* 220 ~ 239 */ + 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0 /* 240 ~ 254 */ +}; + +static u8 used_bit[] = { + 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4, 1, 2, 2, 3, /* 0 ~ 19 */ + 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 1, 2, 2, 3, 2, 3, 3, 4, /* 20 ~ 39 */ + 2, 3, 3, 4, 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, /* 40 ~ 59 */ + 4, 5, 5, 6, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, /* 60 ~ 79 */ + 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 2, 3, 3, 4, /* 80 ~ 99 */ + 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, 4, 5, 5, 6, /* 100 ~ 119 */ + 4, 5, 5, 6, 5, 6, 6, 7, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, /* 120 ~ 139 */ + 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, /* 140 ~ 159 */ + 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, /* 160 ~ 179 */ + 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 2, 3, 3, 4, 3, 4, 4, 5, /* 180 ~ 199 */ + 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, /* 200 ~ 219 */ + 5, 6, 6, 7, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, /* 220 ~ 239 */ + 4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8 /* 240 ~ 255 */ +}; + +/*======================================================================*/ +/* Global Function Definitions */ +/*======================================================================*/ + +/* ffsInit : roll back to the initial state of the file system */ +s32 ffsInit(void) +{ + s32 ret; + + ret = bdev_init(); + if (ret) + return ret; + + ret = fs_init(); + if (ret) + return ret; + + return FFS_SUCCESS; +} /* end of ffsInit */ + +/* ffsShutdown : make free all memory-alloced global buffers */ +s32 ffsShutdown(void) +{ + s32 ret; + ret = fs_shutdown(); + if (ret) + return ret; + + ret = bdev_shutdown(); + if (ret) + return ret; + + return FFS_SUCCESS; +} /* end of ffsShutdown */ + +/* ffsMountVol : mount the file system volume */ +s32 ffsMountVol(struct super_block *sb) +{ + int i, ret; + PBR_SECTOR_T *p_pbr; + struct buffer_head *tmp_bh = NULL; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + + printk("[EXFAT] trying to mount...\n"); + + sm_init(&p_fs->v_sem); + p_fs->dev_ejected = FALSE; + + /* open the block device */ + if (bdev_open(sb)) + return FFS_MEDIAERR; + + if (p_bd->sector_size < sb->s_blocksize) + return FFS_MEDIAERR; + if (p_bd->sector_size > sb->s_blocksize) + sb_set_blocksize(sb, p_bd->sector_size); + + /* read Sector 0 */ + if (sector_read(sb, 0, &tmp_bh, 1) != FFS_SUCCESS) + return FFS_MEDIAERR; + + p_fs->PBR_sector = 0; + + p_pbr = (PBR_SECTOR_T *) tmp_bh->b_data; + + /* check the validity of PBR */ + if (GET16_A(p_pbr->signature) != PBR_SIGNATURE) { + brelse(tmp_bh); + bdev_close(sb); + return FFS_FORMATERR; + } + + /* fill fs_stuct */ + for (i = 0; i < 53; i++) + if (p_pbr->bpb[i]) + break; + + if (i < 53) { + if (GET16(p_pbr->bpb+11)) /* num_fat_sectors */ + ret = fat16_mount(sb, p_pbr); + else + ret = fat32_mount(sb, p_pbr); + } else { + ret = exfat_mount(sb, p_pbr); + } + + brelse(tmp_bh); + + if (ret) { + bdev_close(sb); + return ret; + } + + if (p_fs->vol_type == EXFAT) { + ret = load_alloc_bitmap(sb); + if (ret) { + bdev_close(sb); + return ret; + } + ret = load_upcase_table(sb); + if (ret) { + free_alloc_bitmap(sb); + bdev_close(sb); + return ret; + } + } + + if (p_fs->dev_ejected) { + if (p_fs->vol_type == EXFAT) { + free_upcase_table(sb); + free_alloc_bitmap(sb); + } + bdev_close(sb); + return FFS_MEDIAERR; + } + + printk("[EXFAT] mounted successfully\n"); + + return FFS_SUCCESS; +} /* end of ffsMountVol */ + +/* ffsUmountVol : umount the file system volume */ +s32 ffsUmountVol(struct super_block *sb) +{ + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + printk("[EXFAT] trying to unmount...\n"); + + fs_sync(sb, 0); + fs_set_vol_flags(sb, VOL_CLEAN); + + if (p_fs->vol_type == EXFAT) { + free_upcase_table(sb); + free_alloc_bitmap(sb); + } + + FAT_release_all(sb); + buf_release_all(sb); + + /* close the block device */ + bdev_close(sb); + + if (p_fs->dev_ejected) { + printk("[EXFAT] unmounted with media errors. " + "device's already ejected.\n"); + return FFS_MEDIAERR; + } + + printk("[EXFAT] unmounted successfully\n"); + + return FFS_SUCCESS; +} /* end of ffsUmountVol */ + +/* ffsGetVolInfo : get the information of a file system volume */ +s32 ffsGetVolInfo(struct super_block *sb, VOL_INFO_T *info) +{ + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + if (p_fs->used_clusters == (u32) ~0) + p_fs->used_clusters = p_fs->fs_func->count_used_clusters(sb); + + info->FatType = p_fs->vol_type; + info->ClusterSize = p_fs->cluster_size; + info->NumClusters = p_fs->num_clusters - 2; /* clu 0 & 1 */ + info->UsedClusters = p_fs->used_clusters; + info->FreeClusters = info->NumClusters - info->UsedClusters; + + if (p_fs->dev_ejected) + return FFS_MEDIAERR; + + return FFS_SUCCESS; +} /* end of ffsGetVolInfo */ + +/* ffsSyncVol : synchronize all file system volumes */ +s32 ffsSyncVol(struct super_block *sb, s32 do_sync) +{ + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + /* synchronize the file system */ + fs_sync(sb, do_sync); + fs_set_vol_flags(sb, VOL_CLEAN); + + if (p_fs->dev_ejected) + return FFS_MEDIAERR; + + return FFS_SUCCESS; +} /* end of ffsSyncVol */ + +/*----------------------------------------------------------------------*/ +/* File Operation Functions */ +/*----------------------------------------------------------------------*/ + +/* ffsLookupFile : lookup a file */ +s32 ffsLookupFile(struct inode *inode, char *path, FILE_ID_T *fid) +{ + s32 ret, dentry, num_entries; + CHAIN_T dir; + UNI_NAME_T uni_name; + DOS_NAME_T dos_name; + DENTRY_T *ep, *ep2; + ENTRY_SET_CACHE_T *es = NULL; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + DPRINTK("ffsLookupFile entered\n"); + + /* check the validity of directory name in the given pathname */ + ret = resolve_path(inode, path, &dir, &uni_name); + if (ret) + return ret; + + ret = get_num_entries_and_dos_name(sb, &dir, &uni_name, &num_entries, &dos_name); + if (ret) + return ret; + + /* search the file name for directories */ + dentry = p_fs->fs_func->find_dir_entry(sb, &dir, &uni_name, num_entries, &dos_name, TYPE_ALL); + if (dentry < -1) + return FFS_NOTFOUND; + + fid->dir.dir = dir.dir; + fid->dir.size = dir.size; + fid->dir.flags = dir.flags; + fid->entry = dentry; + + if (dentry == -1) { + fid->type = TYPE_DIR; + fid->rwoffset = 0; + fid->hint_last_off = -1; + + fid->attr = ATTR_SUBDIR; + fid->flags = 0x01; + fid->size = 0; + fid->start_clu = p_fs->root_dir; + } else { + if (p_fs->vol_type == EXFAT) { + es = get_entry_set_in_dir(sb, &dir, dentry, ES_2_ENTRIES, &ep); + if (!es) + return FFS_MEDIAERR; + ep2 = ep+1; + } else { + ep = get_entry_in_dir(sb, &dir, dentry, NULL); + if (!ep) + return FFS_MEDIAERR; + ep2 = ep; + } + + fid->type = p_fs->fs_func->get_entry_type(ep); + fid->rwoffset = 0; + fid->hint_last_off = -1; + fid->attr = p_fs->fs_func->get_entry_attr(ep); + + fid->size = p_fs->fs_func->get_entry_size(ep2); + if ((fid->type == TYPE_FILE) && (fid->size == 0)) { + fid->flags = (p_fs->vol_type == EXFAT) ? 0x03 : 0x01; + fid->start_clu = CLUSTER_32(~0); + } else { + fid->flags = p_fs->fs_func->get_entry_flag(ep2); + fid->start_clu = p_fs->fs_func->get_entry_clu0(ep2); + } + + if (p_fs->vol_type == EXFAT) + release_entry_set(es); + } + + if (p_fs->dev_ejected) + return FFS_MEDIAERR; + + DPRINTK("ffsLookupFile exited successfully\n"); + + return FFS_SUCCESS; +} /* end of ffsLookupFile */ + +/* ffsCreateFile : create a file */ +s32 ffsCreateFile(struct inode *inode, char *path, u8 mode, FILE_ID_T *fid) +{ + s32 ret/*, dentry*/; + CHAIN_T dir; + UNI_NAME_T uni_name; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + /* check the validity of directory name in the given pathname */ + ret = resolve_path(inode, path, &dir, &uni_name); + if (ret) + return ret; + + fs_set_vol_flags(sb, VOL_DIRTY); + + /* create a new file */ + ret = create_file(inode, &dir, &uni_name, mode, fid); + +#ifdef CONFIG_EXFAT_DELAYED_SYNC + fs_sync(sb, 0); + fs_set_vol_flags(sb, VOL_CLEAN); +#endif + + if (p_fs->dev_ejected) + return FFS_MEDIAERR; + + return ret; +} /* end of ffsCreateFile */ + +/* ffsReadFile : read data from a opened file */ +s32 ffsReadFile(struct inode *inode, FILE_ID_T *fid, void *buffer, u64 count, u64 *rcount) +{ + s32 offset, sec_offset, clu_offset; + u32 clu; + sector_t LogSector; + u64 oneblkread, read_bytes; + struct buffer_head *tmp_bh = NULL; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + + /* check if the given file ID is opened */ + if (fid->type != TYPE_FILE) + return FFS_PERMISSIONERR; + + if (fid->rwoffset > fid->size) + fid->rwoffset = fid->size; + + if (count > (fid->size - fid->rwoffset)) + count = fid->size - fid->rwoffset; + + if (count == 0) { + if (rcount != NULL) + *rcount = 0; + return FFS_EOF; + } + + read_bytes = 0; + + while (count > 0) { + clu_offset = (s32)(fid->rwoffset >> p_fs->cluster_size_bits); + clu = fid->start_clu; + + if (fid->flags == 0x03) { + clu += clu_offset; + } else { + /* hint information */ + if ((clu_offset > 0) && (fid->hint_last_off > 0) && + (clu_offset >= fid->hint_last_off)) { + clu_offset -= fid->hint_last_off; + clu = fid->hint_last_clu; + } + + while (clu_offset > 0) { + /* clu = FAT_read(sb, clu); */ + if (FAT_read(sb, clu, &clu) == -1) + return FFS_MEDIAERR; + + clu_offset--; + } + } + + /* hint information */ + fid->hint_last_off = (s32)(fid->rwoffset >> p_fs->cluster_size_bits); + fid->hint_last_clu = clu; + + offset = (s32)(fid->rwoffset & (p_fs->cluster_size-1)); /* byte offset in cluster */ + sec_offset = offset >> p_bd->sector_size_bits; /* sector offset in cluster */ + offset &= p_bd->sector_size_mask; /* byte offset in sector */ + + LogSector = START_SECTOR(clu) + sec_offset; + + oneblkread = (u64)(p_bd->sector_size - offset); + if (oneblkread > count) + oneblkread = count; + + if ((offset == 0) && (oneblkread == p_bd->sector_size)) { + if (sector_read(sb, LogSector, &tmp_bh, 1) != FFS_SUCCESS) + goto err_out; + memcpy(((char *) buffer)+read_bytes, ((char *) tmp_bh->b_data), (s32) oneblkread); + } else { + if (sector_read(sb, LogSector, &tmp_bh, 1) != FFS_SUCCESS) + goto err_out; + memcpy(((char *) buffer)+read_bytes, ((char *) tmp_bh->b_data)+offset, (s32) oneblkread); + } + count -= oneblkread; + read_bytes += oneblkread; + fid->rwoffset += oneblkread; + } + brelse(tmp_bh); + +err_out: + /* set the size of read bytes */ + if (rcount != NULL) + *rcount = read_bytes; + + if (p_fs->dev_ejected) + return FFS_MEDIAERR; + + return FFS_SUCCESS; +} /* end of ffsReadFile */ + +/* ffsWriteFile : write data into a opened file */ +s32 ffsWriteFile(struct inode *inode, FILE_ID_T *fid, void *buffer, u64 count, u64 *wcount) +{ + s32 modified = FALSE, offset, sec_offset, clu_offset; + s32 num_clusters, num_alloc, num_alloced = (s32) ~0; + u32 clu, last_clu; + sector_t LogSector, sector = 0; + u64 oneblkwrite, write_bytes; + CHAIN_T new_clu; + TIMESTAMP_T tm; + DENTRY_T *ep, *ep2; + ENTRY_SET_CACHE_T *es = NULL; + struct buffer_head *tmp_bh = NULL; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + + /* check if the given file ID is opened */ + if (fid->type != TYPE_FILE) + return FFS_PERMISSIONERR; + + if (fid->rwoffset > fid->size) + fid->rwoffset = fid->size; + + if (count == 0) { + if (wcount != NULL) + *wcount = 0; + return FFS_SUCCESS; + } + + fs_set_vol_flags(sb, VOL_DIRTY); + + if (fid->size == 0) + num_clusters = 0; + else + num_clusters = (s32)((fid->size-1) >> p_fs->cluster_size_bits) + 1; + + write_bytes = 0; + + while (count > 0) { + clu_offset = (s32)(fid->rwoffset >> p_fs->cluster_size_bits); + clu = last_clu = fid->start_clu; + + if (fid->flags == 0x03) { + if ((clu_offset > 0) && (clu != CLUSTER_32(~0))) { + last_clu += clu_offset - 1; + + if (clu_offset == num_clusters) + clu = CLUSTER_32(~0); + else + clu += clu_offset; + } + } else { + /* hint information */ + if ((clu_offset > 0) && (fid->hint_last_off > 0) && + (clu_offset >= fid->hint_last_off)) { + clu_offset -= fid->hint_last_off; + clu = fid->hint_last_clu; + } + + while ((clu_offset > 0) && (clu != CLUSTER_32(~0))) { + last_clu = clu; + /* clu = FAT_read(sb, clu); */ + if (FAT_read(sb, clu, &clu) == -1) + return FFS_MEDIAERR; + + clu_offset--; + } + } + + if (clu == CLUSTER_32(~0)) { + num_alloc = (s32)((count-1) >> p_fs->cluster_size_bits) + 1; + new_clu.dir = (last_clu == CLUSTER_32(~0)) ? CLUSTER_32(~0) : last_clu+1; + new_clu.size = 0; + new_clu.flags = fid->flags; + + /* (1) allocate a chain of clusters */ + num_alloced = p_fs->fs_func->alloc_cluster(sb, num_alloc, &new_clu); + if (num_alloced == 0) + break; + else if (num_alloced < 0) + return FFS_MEDIAERR; + + /* (2) append to the FAT chain */ + if (last_clu == CLUSTER_32(~0)) { + if (new_clu.flags == 0x01) + fid->flags = 0x01; + fid->start_clu = new_clu.dir; + modified = TRUE; + } else { + if (new_clu.flags != fid->flags) { + exfat_chain_cont_cluster(sb, fid->start_clu, num_clusters); + fid->flags = 0x01; + modified = TRUE; + } + if (new_clu.flags == 0x01) + FAT_write(sb, last_clu, new_clu.dir); + } + + num_clusters += num_alloced; + clu = new_clu.dir; + } + + /* hint information */ + fid->hint_last_off = (s32)(fid->rwoffset >> p_fs->cluster_size_bits); + fid->hint_last_clu = clu; + + offset = (s32)(fid->rwoffset & (p_fs->cluster_size-1)); /* byte offset in cluster */ + sec_offset = offset >> p_bd->sector_size_bits; /* sector offset in cluster */ + offset &= p_bd->sector_size_mask; /* byte offset in sector */ + + LogSector = START_SECTOR(clu) + sec_offset; + + oneblkwrite = (u64)(p_bd->sector_size - offset); + if (oneblkwrite > count) + oneblkwrite = count; + + if ((offset == 0) && (oneblkwrite == p_bd->sector_size)) { + if (sector_read(sb, LogSector, &tmp_bh, 0) != FFS_SUCCESS) + goto err_out; + memcpy(((char *) tmp_bh->b_data), ((char *) buffer)+write_bytes, (s32) oneblkwrite); + if (sector_write(sb, LogSector, tmp_bh, 0) != FFS_SUCCESS) { + brelse(tmp_bh); + goto err_out; + } + } else { + if ((offset > 0) || ((fid->rwoffset+oneblkwrite) < fid->size)) { + if (sector_read(sb, LogSector, &tmp_bh, 1) != FFS_SUCCESS) + goto err_out; + } else { + if (sector_read(sb, LogSector, &tmp_bh, 0) != FFS_SUCCESS) + goto err_out; + } + + memcpy(((char *) tmp_bh->b_data)+offset, ((char *) buffer)+write_bytes, (s32) oneblkwrite); + if (sector_write(sb, LogSector, tmp_bh, 0) != FFS_SUCCESS) { + brelse(tmp_bh); + goto err_out; + } + } + + count -= oneblkwrite; + write_bytes += oneblkwrite; + fid->rwoffset += oneblkwrite; + + fid->attr |= ATTR_ARCHIVE; + + if (fid->size < fid->rwoffset) { + fid->size = fid->rwoffset; + modified = TRUE; + } + } + + brelse(tmp_bh); + + /* (3) update the direcoty entry */ + if (p_fs->vol_type == EXFAT) { + es = get_entry_set_in_dir(sb, &(fid->dir), fid->entry, ES_ALL_ENTRIES, &ep); + if (es == NULL) + goto err_out; + ep2 = ep+1; + } else { + ep = get_entry_in_dir(sb, &(fid->dir), fid->entry, §or); + if (!ep) + goto err_out; + ep2 = ep; + } + + p_fs->fs_func->set_entry_time(ep, tm_current(&tm), TM_MODIFY); + p_fs->fs_func->set_entry_attr(ep, fid->attr); + + if (p_fs->vol_type != EXFAT) + buf_modify(sb, sector); + + if (modified) { + if (p_fs->fs_func->get_entry_flag(ep2) != fid->flags) + p_fs->fs_func->set_entry_flag(ep2, fid->flags); + + if (p_fs->fs_func->get_entry_size(ep2) != fid->size) + p_fs->fs_func->set_entry_size(ep2, fid->size); + + if (p_fs->fs_func->get_entry_clu0(ep2) != fid->start_clu) + p_fs->fs_func->set_entry_clu0(ep2, fid->start_clu); + + if (p_fs->vol_type != EXFAT) + buf_modify(sb, sector); + } + + if (p_fs->vol_type == EXFAT) { + update_dir_checksum_with_entry_set(sb, es); + release_entry_set(es); + } + +#ifdef CONFIG_EXFAT_DELAYED_SYNC + fs_sync(sb, 0); + fs_set_vol_flags(sb, VOL_CLEAN); +#endif + +err_out: + /* set the size of written bytes */ + if (wcount != NULL) + *wcount = write_bytes; + + if (num_alloced == 0) + return FFS_FULL; + + if (p_fs->dev_ejected) + return FFS_MEDIAERR; + + return FFS_SUCCESS; +} /* end of ffsWriteFile */ + +/* ffsTruncateFile : resize the file length */ +s32 ffsTruncateFile(struct inode *inode, u64 old_size, u64 new_size) +{ + s32 num_clusters; + u32 last_clu = CLUSTER_32(0); + sector_t sector = 0; + CHAIN_T clu; + TIMESTAMP_T tm; + DENTRY_T *ep, *ep2; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + FILE_ID_T *fid = &(EXFAT_I(inode)->fid); + ENTRY_SET_CACHE_T *es = NULL; + + /* check if the given file ID is opened */ + if (fid->type != TYPE_FILE) + return FFS_PERMISSIONERR; + + if (fid->size != old_size) { + printk(KERN_ERR "[EXFAT] truncate : can't skip it because of " + "size-mismatch(old:%lld->fid:%lld).\n" + ,old_size, fid->size); + } + + if (old_size <= new_size) + return FFS_SUCCESS; + + fs_set_vol_flags(sb, VOL_DIRTY); + + clu.dir = fid->start_clu; + clu.size = (s32)((old_size-1) >> p_fs->cluster_size_bits) + 1; + clu.flags = fid->flags; + + if (new_size > 0) { + num_clusters = (s32)((new_size-1) >> p_fs->cluster_size_bits) + 1; + + if (clu.flags == 0x03) { + clu.dir += num_clusters; + } else { + while (num_clusters > 0) { + last_clu = clu.dir; + if (FAT_read(sb, clu.dir, &(clu.dir)) == -1) + return FFS_MEDIAERR; + num_clusters--; + } + } + + clu.size -= num_clusters; + } + + fid->size = new_size; + fid->attr |= ATTR_ARCHIVE; + if (new_size == 0) { + fid->flags = (p_fs->vol_type == EXFAT) ? 0x03 : 0x01; + fid->start_clu = CLUSTER_32(~0); + } + + /* (1) update the directory entry */ + if (p_fs->vol_type == EXFAT) { + es = get_entry_set_in_dir(sb, &(fid->dir), fid->entry, ES_ALL_ENTRIES, &ep); + if (es == NULL) + return FFS_MEDIAERR; + ep2 = ep+1; + } else { + ep = get_entry_in_dir(sb, &(fid->dir), fid->entry, §or); + if (!ep) + return FFS_MEDIAERR; + ep2 = ep; + } + + p_fs->fs_func->set_entry_time(ep, tm_current(&tm), TM_MODIFY); + p_fs->fs_func->set_entry_attr(ep, fid->attr); + + p_fs->fs_func->set_entry_size(ep2, new_size); + if (new_size == 0) { + p_fs->fs_func->set_entry_flag(ep2, 0x01); + p_fs->fs_func->set_entry_clu0(ep2, CLUSTER_32(0)); + } + + if (p_fs->vol_type != EXFAT) + buf_modify(sb, sector); + else { + update_dir_checksum_with_entry_set(sb, es); + release_entry_set(es); + } + + /* (2) cut off from the FAT chain */ + if (last_clu != CLUSTER_32(0)) { + if (fid->flags == 0x01) + FAT_write(sb, last_clu, CLUSTER_32(~0)); + } + + /* (3) free the clusters */ + p_fs->fs_func->free_cluster(sb, &clu, 0); + + /* hint information */ + fid->hint_last_off = -1; + if (fid->rwoffset > fid->size) + fid->rwoffset = fid->size; + +#ifdef CONFIG_EXFAT_DELAYED_SYNC + fs_sync(sb, 0); + fs_set_vol_flags(sb, VOL_CLEAN); +#endif + + if (p_fs->dev_ejected) + return FFS_MEDIAERR; + + return FFS_SUCCESS; +} /* end of ffsTruncateFile */ + +static void update_parent_info(FILE_ID_T *fid, struct inode *parent_inode) +{ + FS_INFO_T *p_fs = &(EXFAT_SB(parent_inode->i_sb)->fs_info); + FILE_ID_T *parent_fid = &(EXFAT_I(parent_inode)->fid); + + if (unlikely((parent_fid->flags != fid->dir.flags) + || (parent_fid->size != (fid->dir.size<cluster_size_bits)) + || (parent_fid->start_clu != fid->dir.dir))) { + + fid->dir.dir = parent_fid->start_clu; + fid->dir.flags = parent_fid->flags; + fid->dir.size = ((parent_fid->size + (p_fs->cluster_size-1)) + >> p_fs->cluster_size_bits); + } +} + +/* ffsMoveFile : move(rename) a old file into a new file */ +s32 ffsMoveFile(struct inode *old_parent_inode, FILE_ID_T *fid, struct inode *new_parent_inode, struct dentry *new_dentry) +{ + s32 ret; + s32 dentry; + CHAIN_T olddir, newdir; + CHAIN_T *p_dir = NULL; + UNI_NAME_T uni_name; + DENTRY_T *ep; + struct super_block *sb = old_parent_inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + u8 *new_path = (u8 *) new_dentry->d_name.name; + struct inode *new_inode = new_dentry->d_inode; + int num_entries; + FILE_ID_T *new_fid = NULL; + s32 new_entry = 0; + + /* check the validity of pointer parameters */ + if ((new_path == NULL) || (*new_path == '\0')) + return FFS_ERROR; + + update_parent_info(fid, old_parent_inode); + + olddir.dir = fid->dir.dir; + olddir.size = fid->dir.size; + olddir.flags = fid->dir.flags; + + dentry = fid->entry; + + /* check if the old file is "." or ".." */ + if (p_fs->vol_type != EXFAT) { + if ((olddir.dir != p_fs->root_dir) && (dentry < 2)) + return FFS_PERMISSIONERR; + } + + ep = get_entry_in_dir(sb, &olddir, dentry, NULL); + if (!ep) + return FFS_MEDIAERR; + + if (p_fs->fs_func->get_entry_attr(ep) & ATTR_READONLY) + return FFS_PERMISSIONERR; + + /* check whether new dir is existing directory and empty */ + if (new_inode) { + u32 entry_type; + + ret = FFS_MEDIAERR; + new_fid = &EXFAT_I(new_inode)->fid; + + update_parent_info(new_fid, new_parent_inode); + + p_dir = &(new_fid->dir); + new_entry = new_fid->entry; + ep = get_entry_in_dir(sb, p_dir, new_entry, NULL); + if (!ep) + goto out; + + entry_type = p_fs->fs_func->get_entry_type(ep); + + if (entry_type == TYPE_DIR) { + CHAIN_T new_clu; + new_clu.dir = new_fid->start_clu; + new_clu.size = (s32)((new_fid->size-1) >> p_fs->cluster_size_bits) + 1; + new_clu.flags = new_fid->flags; + + if (!is_dir_empty(sb, &new_clu)) + return FFS_FILEEXIST; + } + } + + /* check the validity of directory name in the given new pathname */ + ret = resolve_path(new_parent_inode, new_path, &newdir, &uni_name); + if (ret) + return ret; + + fs_set_vol_flags(sb, VOL_DIRTY); + + if (olddir.dir == newdir.dir) + ret = rename_file(new_parent_inode, &olddir, dentry, &uni_name, fid); + else + ret = move_file(new_parent_inode, &olddir, dentry, &newdir, &uni_name, fid); + + if ((ret == FFS_SUCCESS) && new_inode) { + /* delete entries of new_dir */ + ep = get_entry_in_dir(sb, p_dir, new_entry, NULL); + if (!ep) + goto out; + + num_entries = p_fs->fs_func->count_ext_entries(sb, p_dir, new_entry, ep); + if (num_entries < 0) + goto out; + p_fs->fs_func->delete_dir_entry(sb, p_dir, new_entry, 0, num_entries+1); + } +out: +#ifdef CONFIG_EXFAT_DELAYED_SYNC + fs_sync(sb, 0); + fs_set_vol_flags(sb, VOL_CLEAN); +#endif + + if (p_fs->dev_ejected) + return FFS_MEDIAERR; + + return ret; +} /* end of ffsMoveFile */ + +/* ffsRemoveFile : remove a file */ +s32 ffsRemoveFile(struct inode *inode, FILE_ID_T *fid) +{ + s32 dentry; + CHAIN_T dir, clu_to_free; + DENTRY_T *ep; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + dir.dir = fid->dir.dir; + dir.size = fid->dir.size; + dir.flags = fid->dir.flags; + + dentry = fid->entry; + + ep = get_entry_in_dir(sb, &dir, dentry, NULL); + if (!ep) + return FFS_MEDIAERR; + + if (p_fs->fs_func->get_entry_attr(ep) & ATTR_READONLY) + return FFS_PERMISSIONERR; + + fs_set_vol_flags(sb, VOL_DIRTY); + + /* (1) update the directory entry */ + remove_file(inode, &dir, dentry); + + clu_to_free.dir = fid->start_clu; + clu_to_free.size = (s32)((fid->size-1) >> p_fs->cluster_size_bits) + 1; + clu_to_free.flags = fid->flags; + + /* (2) free the clusters */ + p_fs->fs_func->free_cluster(sb, &clu_to_free, 0); + + fid->size = 0; + fid->start_clu = CLUSTER_32(~0); + fid->flags = (p_fs->vol_type == EXFAT) ? 0x03 : 0x01; + +#ifdef CONFIG_EXFAT_DELAYED_SYNC + fs_sync(sb, 0); + fs_set_vol_flags(sb, VOL_CLEAN); +#endif + + if (p_fs->dev_ejected) + return FFS_MEDIAERR; + + return FFS_SUCCESS; +} /* end of ffsRemoveFile */ + +/* ffsSetAttr : set the attribute of a given file */ +s32 ffsSetAttr(struct inode *inode, u32 attr) +{ + u32 type; + sector_t sector = 0; + DENTRY_T *ep; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + FILE_ID_T *fid = &(EXFAT_I(inode)->fid); + u8 is_dir = (fid->type == TYPE_DIR) ? 1 : 0; + ENTRY_SET_CACHE_T *es = NULL; + + if (fid->attr == attr) { + if (p_fs->dev_ejected) + return FFS_MEDIAERR; + return FFS_SUCCESS; + } + + if (is_dir) { + if ((fid->dir.dir == p_fs->root_dir) && + (fid->entry == -1)) { + if (p_fs->dev_ejected) + return FFS_MEDIAERR; + return FFS_SUCCESS; + } + } + + /* get the directory entry of given file */ + if (p_fs->vol_type == EXFAT) { + es = get_entry_set_in_dir(sb, &(fid->dir), fid->entry, ES_ALL_ENTRIES, &ep); + if (es == NULL) + return FFS_MEDIAERR; + } else { + ep = get_entry_in_dir(sb, &(fid->dir), fid->entry, §or); + if (!ep) + return FFS_MEDIAERR; + } + + type = p_fs->fs_func->get_entry_type(ep); + + if (((type == TYPE_FILE) && (attr & ATTR_SUBDIR)) || + ((type == TYPE_DIR) && (!(attr & ATTR_SUBDIR)))) { + s32 err; + if (p_fs->dev_ejected) + err = FFS_MEDIAERR; + else + err = FFS_ERROR; + + if (p_fs->vol_type == EXFAT) + release_entry_set(es); + return err; + } + + fs_set_vol_flags(sb, VOL_DIRTY); + + /* set the file attribute */ + fid->attr = attr; + p_fs->fs_func->set_entry_attr(ep, attr); + + if (p_fs->vol_type != EXFAT) + buf_modify(sb, sector); + else { + update_dir_checksum_with_entry_set(sb, es); + release_entry_set(es); + } + +#ifdef CONFIG_EXFAT_DELAYED_SYNC + fs_sync(sb, 0); + fs_set_vol_flags(sb, VOL_CLEAN); +#endif + + if (p_fs->dev_ejected) + return FFS_MEDIAERR; + + return FFS_SUCCESS; +} /* end of ffsSetAttr */ + +/* ffsGetStat : get the information of a given file */ +s32 ffsGetStat(struct inode *inode, DIR_ENTRY_T *info) +{ + sector_t sector = 0; + s32 count; + CHAIN_T dir; + UNI_NAME_T uni_name; + TIMESTAMP_T tm; + DENTRY_T *ep, *ep2; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + FILE_ID_T *fid = &(EXFAT_I(inode)->fid); + ENTRY_SET_CACHE_T *es = NULL; + u8 is_dir = (fid->type == TYPE_DIR) ? 1 : 0; + + DPRINTK("ffsGetStat entered\n"); + + if (is_dir) { + if ((fid->dir.dir == p_fs->root_dir) && + (fid->entry == -1)) { + info->Attr = ATTR_SUBDIR; + memset((char *) &info->CreateTimestamp, 0, sizeof(DATE_TIME_T)); + memset((char *) &info->ModifyTimestamp, 0, sizeof(DATE_TIME_T)); + memset((char *) &info->AccessTimestamp, 0, sizeof(DATE_TIME_T)); + strcpy(info->ShortName, "."); + strcpy(info->Name, "."); + + dir.dir = p_fs->root_dir; + dir.flags = 0x01; + + if (p_fs->root_dir == CLUSTER_32(0)) /* FAT16 root_dir */ + info->Size = p_fs->dentries_in_root << DENTRY_SIZE_BITS; + else + info->Size = count_num_clusters(sb, &dir) << p_fs->cluster_size_bits; + + count = count_dos_name_entries(sb, &dir, TYPE_DIR); + if (count < 0) + return FFS_MEDIAERR; + info->NumSubdirs = count; + + if (p_fs->dev_ejected) + return FFS_MEDIAERR; + return FFS_SUCCESS; + } + } + + /* get the directory entry of given file or directory */ + if (p_fs->vol_type == EXFAT) { + es = get_entry_set_in_dir(sb, &(fid->dir), fid->entry, ES_2_ENTRIES, &ep); + if (es == NULL) + return FFS_MEDIAERR; + ep2 = ep+1; + } else { + ep = get_entry_in_dir(sb, &(fid->dir), fid->entry, §or); + if (!ep) + return FFS_MEDIAERR; + ep2 = ep; + buf_lock(sb, sector); + } + + /* set FILE_INFO structure using the acquired DENTRY_T */ + info->Attr = p_fs->fs_func->get_entry_attr(ep); + + p_fs->fs_func->get_entry_time(ep, &tm, TM_CREATE); + info->CreateTimestamp.Year = tm.year; + info->CreateTimestamp.Month = tm.mon; + info->CreateTimestamp.Day = tm.day; + info->CreateTimestamp.Hour = tm.hour; + info->CreateTimestamp.Minute = tm.min; + info->CreateTimestamp.Second = tm.sec; + info->CreateTimestamp.MilliSecond = 0; + + p_fs->fs_func->get_entry_time(ep, &tm, TM_MODIFY); + info->ModifyTimestamp.Year = tm.year; + info->ModifyTimestamp.Month = tm.mon; + info->ModifyTimestamp.Day = tm.day; + info->ModifyTimestamp.Hour = tm.hour; + info->ModifyTimestamp.Minute = tm.min; + info->ModifyTimestamp.Second = tm.sec; + info->ModifyTimestamp.MilliSecond = 0; + + memset((char *) &info->AccessTimestamp, 0, sizeof(DATE_TIME_T)); + + *(uni_name.name) = 0x0; + /* XXX this is very bad for exfat cuz name is already included in es. + API should be revised */ + p_fs->fs_func->get_uni_name_from_ext_entry(sb, &(fid->dir), fid->entry, uni_name.name); + if (*(uni_name.name) == 0x0 && p_fs->vol_type != EXFAT) + get_uni_name_from_dos_entry(sb, (DOS_DENTRY_T *) ep, &uni_name, 0x1); + nls_uniname_to_cstring(sb, info->Name, &uni_name); + + if (p_fs->vol_type == EXFAT) { + info->NumSubdirs = 2; + } else { + buf_unlock(sb, sector); + get_uni_name_from_dos_entry(sb, (DOS_DENTRY_T *) ep, &uni_name, 0x0); + nls_uniname_to_cstring(sb, info->ShortName, &uni_name); + info->NumSubdirs = 0; + } + + info->Size = p_fs->fs_func->get_entry_size(ep2); + + if (p_fs->vol_type == EXFAT) + release_entry_set(es); + + if (is_dir) { + dir.dir = fid->start_clu; + dir.flags = 0x01; + + if (info->Size == 0) + info->Size = (u64) count_num_clusters(sb, &dir) << p_fs->cluster_size_bits; + + count = count_dos_name_entries(sb, &dir, TYPE_DIR); + if (count < 0) + return FFS_MEDIAERR; + info->NumSubdirs += count; + } + + if (p_fs->dev_ejected) + return FFS_MEDIAERR; + + DPRINTK("ffsGetStat exited successfully\n"); + return FFS_SUCCESS; +} /* end of ffsGetStat */ + +/* ffsSetStat : set the information of a given file */ +s32 ffsSetStat(struct inode *inode, DIR_ENTRY_T *info) +{ + sector_t sector = 0; + TIMESTAMP_T tm; + DENTRY_T *ep, *ep2; + ENTRY_SET_CACHE_T *es = NULL; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + FILE_ID_T *fid = &(EXFAT_I(inode)->fid); + u8 is_dir = (fid->type == TYPE_DIR) ? 1 : 0; + + if (is_dir) { + if ((fid->dir.dir == p_fs->root_dir) && + (fid->entry == -1)) { + if (p_fs->dev_ejected) + return FFS_MEDIAERR; + return FFS_SUCCESS; + } + } + + fs_set_vol_flags(sb, VOL_DIRTY); + + /* get the directory entry of given file or directory */ + if (p_fs->vol_type == EXFAT) { + es = get_entry_set_in_dir(sb, &(fid->dir), fid->entry, ES_ALL_ENTRIES, &ep); + if (es == NULL) + return FFS_MEDIAERR; + ep2 = ep+1; + } else { + /* for other than exfat */ + ep = get_entry_in_dir(sb, &(fid->dir), fid->entry, §or); + if (!ep) + return FFS_MEDIAERR; + ep2 = ep; + } + + + p_fs->fs_func->set_entry_attr(ep, info->Attr); + + /* set FILE_INFO structure using the acquired DENTRY_T */ + tm.sec = info->CreateTimestamp.Second; + tm.min = info->CreateTimestamp.Minute; + tm.hour = info->CreateTimestamp.Hour; + tm.day = info->CreateTimestamp.Day; + tm.mon = info->CreateTimestamp.Month; + tm.year = info->CreateTimestamp.Year; + p_fs->fs_func->set_entry_time(ep, &tm, TM_CREATE); + + tm.sec = info->ModifyTimestamp.Second; + tm.min = info->ModifyTimestamp.Minute; + tm.hour = info->ModifyTimestamp.Hour; + tm.day = info->ModifyTimestamp.Day; + tm.mon = info->ModifyTimestamp.Month; + tm.year = info->ModifyTimestamp.Year; + p_fs->fs_func->set_entry_time(ep, &tm, TM_MODIFY); + + + p_fs->fs_func->set_entry_size(ep2, info->Size); + + if (p_fs->vol_type != EXFAT) { + buf_modify(sb, sector); + } else { + update_dir_checksum_with_entry_set(sb, es); + release_entry_set(es); + } + + if (p_fs->dev_ejected) + return FFS_MEDIAERR; + + return FFS_SUCCESS; +} /* end of ffsSetStat */ + +s32 ffsMapCluster(struct inode *inode, s32 clu_offset, u32 *clu) +{ + s32 num_clusters, num_alloced, modified = FALSE; + u32 last_clu; + sector_t sector = 0; + CHAIN_T new_clu; + DENTRY_T *ep; + ENTRY_SET_CACHE_T *es = NULL; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + FILE_ID_T *fid = &(EXFAT_I(inode)->fid); + + fid->rwoffset = (s64)(clu_offset) << p_fs->cluster_size_bits; + + if (EXFAT_I(inode)->mmu_private == 0) + num_clusters = 0; + else + num_clusters = (s32)((EXFAT_I(inode)->mmu_private-1) >> p_fs->cluster_size_bits) + 1; + + *clu = last_clu = fid->start_clu; + + if (fid->flags == 0x03) { + if ((clu_offset > 0) && (*clu != CLUSTER_32(~0))) { + last_clu += clu_offset - 1; + + if (clu_offset == num_clusters) + *clu = CLUSTER_32(~0); + else + *clu += clu_offset; + } + } else { + /* hint information */ + if ((clu_offset > 0) && (fid->hint_last_off > 0) && + (clu_offset >= fid->hint_last_off)) { + clu_offset -= fid->hint_last_off; + *clu = fid->hint_last_clu; + } + + while ((clu_offset > 0) && (*clu != CLUSTER_32(~0))) { + last_clu = *clu; + if (FAT_read(sb, *clu, clu) == -1) + return FFS_MEDIAERR; + clu_offset--; + } + } + + if (*clu == CLUSTER_32(~0)) { + fs_set_vol_flags(sb, VOL_DIRTY); + + new_clu.dir = (last_clu == CLUSTER_32(~0)) ? CLUSTER_32(~0) : last_clu+1; + new_clu.size = 0; + new_clu.flags = fid->flags; + + /* (1) allocate a cluster */ + num_alloced = p_fs->fs_func->alloc_cluster(sb, 1, &new_clu); + if (num_alloced < 0) + return FFS_MEDIAERR; + else if (num_alloced == 0) + return FFS_FULL; + + /* (2) append to the FAT chain */ + if (last_clu == CLUSTER_32(~0)) { + if (new_clu.flags == 0x01) + fid->flags = 0x01; + fid->start_clu = new_clu.dir; + modified = TRUE; + } else { + if (new_clu.flags != fid->flags) { + exfat_chain_cont_cluster(sb, fid->start_clu, num_clusters); + fid->flags = 0x01; + modified = TRUE; + } + if (new_clu.flags == 0x01) + FAT_write(sb, last_clu, new_clu.dir); + } + + num_clusters += num_alloced; + *clu = new_clu.dir; + + if (p_fs->vol_type == EXFAT) { + es = get_entry_set_in_dir(sb, &(fid->dir), fid->entry, ES_ALL_ENTRIES, &ep); + if (es == NULL) + return FFS_MEDIAERR; + /* get stream entry */ + ep++; + } + + /* (3) update directory entry */ + if (modified) { + if (p_fs->vol_type != EXFAT) { + ep = get_entry_in_dir(sb, &(fid->dir), fid->entry, §or); + if (!ep) + return FFS_MEDIAERR; + } + + if (p_fs->fs_func->get_entry_flag(ep) != fid->flags) + p_fs->fs_func->set_entry_flag(ep, fid->flags); + + if (p_fs->fs_func->get_entry_clu0(ep) != fid->start_clu) + p_fs->fs_func->set_entry_clu0(ep, fid->start_clu); + + if (p_fs->vol_type != EXFAT) + buf_modify(sb, sector); + } + + if (p_fs->vol_type == EXFAT) { + update_dir_checksum_with_entry_set(sb, es); + release_entry_set(es); + } + + /* add number of new blocks to inode */ + inode->i_blocks += num_alloced << (p_fs->cluster_size_bits - 9); + } + + /* hint information */ + fid->hint_last_off = (s32)(fid->rwoffset >> p_fs->cluster_size_bits); + fid->hint_last_clu = *clu; + + if (p_fs->dev_ejected) + return FFS_MEDIAERR; + + return FFS_SUCCESS; +} /* end of ffsMapCluster */ + +/*----------------------------------------------------------------------*/ +/* Directory Operation Functions */ +/*----------------------------------------------------------------------*/ + +/* ffsCreateDir : create(make) a directory */ +s32 ffsCreateDir(struct inode *inode, char *path, FILE_ID_T *fid) +{ + s32 ret/*, dentry*/; + CHAIN_T dir; + UNI_NAME_T uni_name; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + DPRINTK("ffsCreateDir entered\n"); + + /* check the validity of directory name in the given old pathname */ + ret = resolve_path(inode, path, &dir, &uni_name); + if (ret) + return ret; + + fs_set_vol_flags(sb, VOL_DIRTY); + + ret = create_dir(inode, &dir, &uni_name, fid); + +#ifdef CONFIG_EXFAT_DELAYED_SYNC + fs_sync(sb, 0); + fs_set_vol_flags(sb, VOL_CLEAN); +#endif + + if (p_fs->dev_ejected) + return FFS_MEDIAERR; + + return ret; +} /* end of ffsCreateDir */ + +/* ffsReadDir : read a directory entry from the opened directory */ +s32 ffsReadDir(struct inode *inode, DIR_ENTRY_T *dir_entry) +{ + int i, dentry, clu_offset; + s32 dentries_per_clu, dentries_per_clu_bits = 0; + u32 type; + sector_t sector; + CHAIN_T dir, clu; + UNI_NAME_T uni_name; + TIMESTAMP_T tm; + DENTRY_T *ep; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + FILE_ID_T *fid = &(EXFAT_I(inode)->fid); + + /* check if the given file ID is opened */ + if (fid->type != TYPE_DIR) + return FFS_PERMISSIONERR; + + if (fid->entry == -1) { + dir.dir = p_fs->root_dir; + dir.flags = 0x01; + } else { + dir.dir = fid->start_clu; + dir.size = (s32)(fid->size >> p_fs->cluster_size_bits); + dir.flags = fid->flags; + } + + dentry = (s32) fid->rwoffset; + + if (dir.dir == CLUSTER_32(0)) { /* FAT16 root_dir */ + dentries_per_clu = p_fs->dentries_in_root; + + if (dentry == dentries_per_clu) { + clu.dir = CLUSTER_32(~0); + } else { + clu.dir = dir.dir; + clu.size = dir.size; + clu.flags = dir.flags; + } + } else { + dentries_per_clu = p_fs->dentries_per_clu; + dentries_per_clu_bits = ilog2(dentries_per_clu); + + clu_offset = dentry >> dentries_per_clu_bits; + clu.dir = dir.dir; + clu.size = dir.size; + clu.flags = dir.flags; + + if (clu.flags == 0x03) { + clu.dir += clu_offset; + clu.size -= clu_offset; + } else { + /* hint_information */ + if ((clu_offset > 0) && (fid->hint_last_off > 0) && + (clu_offset >= fid->hint_last_off)) { + clu_offset -= fid->hint_last_off; + clu.dir = fid->hint_last_clu; + } + + while (clu_offset > 0) { + /* clu.dir = FAT_read(sb, clu.dir); */ + if (FAT_read(sb, clu.dir, &(clu.dir)) == -1) + return FFS_MEDIAERR; + + clu_offset--; + } + } + } + + while (clu.dir != CLUSTER_32(~0)) { + if (p_fs->dev_ejected) + break; + + if (dir.dir == CLUSTER_32(0)) /* FAT16 root_dir */ + i = dentry % dentries_per_clu; + else + i = dentry & (dentries_per_clu-1); + + for ( ; i < dentries_per_clu; i++, dentry++) { + ep = get_entry_in_dir(sb, &clu, i, §or); + if (!ep) + return FFS_MEDIAERR; + + type = p_fs->fs_func->get_entry_type(ep); + + if (type == TYPE_UNUSED) + break; + + if ((type != TYPE_FILE) && (type != TYPE_DIR)) + continue; + + buf_lock(sb, sector); + dir_entry->Attr = p_fs->fs_func->get_entry_attr(ep); + + p_fs->fs_func->get_entry_time(ep, &tm, TM_CREATE); + dir_entry->CreateTimestamp.Year = tm.year; + dir_entry->CreateTimestamp.Month = tm.mon; + dir_entry->CreateTimestamp.Day = tm.day; + dir_entry->CreateTimestamp.Hour = tm.hour; + dir_entry->CreateTimestamp.Minute = tm.min; + dir_entry->CreateTimestamp.Second = tm.sec; + dir_entry->CreateTimestamp.MilliSecond = 0; + + p_fs->fs_func->get_entry_time(ep, &tm, TM_MODIFY); + dir_entry->ModifyTimestamp.Year = tm.year; + dir_entry->ModifyTimestamp.Month = tm.mon; + dir_entry->ModifyTimestamp.Day = tm.day; + dir_entry->ModifyTimestamp.Hour = tm.hour; + dir_entry->ModifyTimestamp.Minute = tm.min; + dir_entry->ModifyTimestamp.Second = tm.sec; + dir_entry->ModifyTimestamp.MilliSecond = 0; + + memset((char *) &dir_entry->AccessTimestamp, 0, sizeof(DATE_TIME_T)); + + *(uni_name.name) = 0x0; + p_fs->fs_func->get_uni_name_from_ext_entry(sb, &dir, dentry, uni_name.name); + if (*(uni_name.name) == 0x0 && p_fs->vol_type != EXFAT) + get_uni_name_from_dos_entry(sb, (DOS_DENTRY_T *) ep, &uni_name, 0x1); + nls_uniname_to_cstring(sb, dir_entry->Name, &uni_name); + buf_unlock(sb, sector); + + if (p_fs->vol_type == EXFAT) { + ep = get_entry_in_dir(sb, &clu, i+1, NULL); + if (!ep) + return FFS_MEDIAERR; + } else { + get_uni_name_from_dos_entry(sb, (DOS_DENTRY_T *) ep, &uni_name, 0x0); + nls_uniname_to_cstring(sb, dir_entry->ShortName, &uni_name); + } + + dir_entry->Size = p_fs->fs_func->get_entry_size(ep); + + /* hint information */ + if (dir.dir == CLUSTER_32(0)) { /* FAT16 root_dir */ + } else { + fid->hint_last_off = dentry >> dentries_per_clu_bits; + fid->hint_last_clu = clu.dir; + } + + fid->rwoffset = (s64) ++dentry; + + if (p_fs->dev_ejected) + return FFS_MEDIAERR; + + return FFS_SUCCESS; + } + + if (dir.dir == CLUSTER_32(0)) + break; /* FAT16 root_dir */ + + if (clu.flags == 0x03) { + if ((--clu.size) > 0) + clu.dir++; + else + clu.dir = CLUSTER_32(~0); + } else { + /* clu.dir = FAT_read(sb, clu.dir); */ + if (FAT_read(sb, clu.dir, &(clu.dir)) == -1) + return FFS_MEDIAERR; + } + } + + *(dir_entry->Name) = '\0'; + + fid->rwoffset = (s64) ++dentry; + + if (p_fs->dev_ejected) + return FFS_MEDIAERR; + + return FFS_SUCCESS; +} /* end of ffsReadDir */ + +/* ffsRemoveDir : remove a directory */ +s32 ffsRemoveDir(struct inode *inode, FILE_ID_T *fid) +{ + s32 dentry; + CHAIN_T dir, clu_to_free; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + dir.dir = fid->dir.dir; + dir.size = fid->dir.size; + dir.flags = fid->dir.flags; + + dentry = fid->entry; + + /* check if the file is "." or ".." */ + if (p_fs->vol_type != EXFAT) { + if ((dir.dir != p_fs->root_dir) && (dentry < 2)) + return FFS_PERMISSIONERR; + } + + clu_to_free.dir = fid->start_clu; + clu_to_free.size = (s32)((fid->size-1) >> p_fs->cluster_size_bits) + 1; + clu_to_free.flags = fid->flags; + + if (!is_dir_empty(sb, &clu_to_free)) + return FFS_FILEEXIST; + + fs_set_vol_flags(sb, VOL_DIRTY); + + /* (1) update the directory entry */ + remove_file(inode, &dir, dentry); + + /* (2) free the clusters */ + p_fs->fs_func->free_cluster(sb, &clu_to_free, 1); + + fid->size = 0; + fid->start_clu = CLUSTER_32(~0); + fid->flags = (p_fs->vol_type == EXFAT)? 0x03: 0x01; + +#ifdef CONFIG_EXFAT_DELAYED_SYNC + fs_sync(sb, 0); + fs_set_vol_flags(sb, VOL_CLEAN); +#endif + + if (p_fs->dev_ejected) + return FFS_MEDIAERR; + + return FFS_SUCCESS; +} /* end of ffsRemoveDir */ + +/*======================================================================*/ +/* Local Function Definitions */ +/*======================================================================*/ + +/* + * File System Management Functions + */ + +s32 fs_init(void) +{ + /* critical check for system requirement on size of DENTRY_T structure */ + if (sizeof(DENTRY_T) != DENTRY_SIZE) + return FFS_ALIGNMENTERR; + + if (sizeof(DOS_DENTRY_T) != DENTRY_SIZE) + return FFS_ALIGNMENTERR; + + if (sizeof(EXT_DENTRY_T) != DENTRY_SIZE) + return FFS_ALIGNMENTERR; + + if (sizeof(FILE_DENTRY_T) != DENTRY_SIZE) + return FFS_ALIGNMENTERR; + + if (sizeof(STRM_DENTRY_T) != DENTRY_SIZE) + return FFS_ALIGNMENTERR; + + if (sizeof(NAME_DENTRY_T) != DENTRY_SIZE) + return FFS_ALIGNMENTERR; + + if (sizeof(BMAP_DENTRY_T) != DENTRY_SIZE) + return FFS_ALIGNMENTERR; + + if (sizeof(CASE_DENTRY_T) != DENTRY_SIZE) + return FFS_ALIGNMENTERR; + + if (sizeof(VOLM_DENTRY_T) != DENTRY_SIZE) + return FFS_ALIGNMENTERR; + + return FFS_SUCCESS; +} /* end of fs_init */ + +s32 fs_shutdown(void) +{ + return FFS_SUCCESS; +} /* end of fs_shutdown */ + +void fs_set_vol_flags(struct super_block *sb, u32 new_flag) +{ + PBR_SECTOR_T *p_pbr; + BPBEX_T *p_bpb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + if (p_fs->vol_flag == new_flag) + return; + + p_fs->vol_flag = new_flag; + + if (p_fs->vol_type == EXFAT) { + if (p_fs->pbr_bh == NULL) { + if (sector_read(sb, p_fs->PBR_sector, &(p_fs->pbr_bh), 1) != FFS_SUCCESS) + return; + } + + p_pbr = (PBR_SECTOR_T *) p_fs->pbr_bh->b_data; + p_bpb = (BPBEX_T *) p_pbr->bpb; + SET16(p_bpb->vol_flags, (u16) new_flag); + + /* XXX duyoung + what can we do here? (cuz fs_set_vol_flags() is void) */ + if ((new_flag == VOL_DIRTY) && (!buffer_dirty(p_fs->pbr_bh))) + sector_write(sb, p_fs->PBR_sector, p_fs->pbr_bh, 1); + else + sector_write(sb, p_fs->PBR_sector, p_fs->pbr_bh, 0); + } +} /* end of fs_set_vol_flags */ + +void fs_sync(struct super_block *sb, s32 do_sync) +{ + if (do_sync) + bdev_sync(sb); +} /* end of fs_sync */ + +void fs_error(struct super_block *sb) +{ + struct exfat_mount_options *opts = &EXFAT_SB(sb)->options; + + if (opts->errors == EXFAT_ERRORS_PANIC) + panic("[EXFAT] Filesystem panic from previous error\n"); + else if ((opts->errors == EXFAT_ERRORS_RO) && !(sb->s_flags & MS_RDONLY)) { + sb->s_flags |= MS_RDONLY; + printk(KERN_ERR "[EXFAT] Filesystem has been set read-only\n"); + } +} + +/* + * Cluster Management Functions + */ + +s32 clear_cluster(struct super_block *sb, u32 clu) +{ + sector_t s, n; + s32 ret = FFS_SUCCESS; + struct buffer_head *tmp_bh = NULL; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + + if (clu == CLUSTER_32(0)) { /* FAT16 root_dir */ + s = p_fs->root_start_sector; + n = p_fs->data_start_sector; + } else { + s = START_SECTOR(clu); + n = s + p_fs->sectors_per_clu; + } + + for (; s < n; s++) { + ret = sector_read(sb, s, &tmp_bh, 0); + if (ret != FFS_SUCCESS) + return ret; + + memset((char *) tmp_bh->b_data, 0x0, p_bd->sector_size); + ret = sector_write(sb, s, tmp_bh, 0); + if (ret != FFS_SUCCESS) + break; + } + + brelse(tmp_bh); + return ret; +} /* end of clear_cluster */ + +s32 fat_alloc_cluster(struct super_block *sb, s32 num_alloc, CHAIN_T *p_chain) +{ + int i, num_clusters = 0; + u32 new_clu, last_clu = CLUSTER_32(~0), read_clu; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + new_clu = p_chain->dir; + if (new_clu == CLUSTER_32(~0)) + new_clu = p_fs->clu_srch_ptr; + else if (new_clu >= p_fs->num_clusters) + new_clu = 2; + + __set_sb_dirty(sb); + + p_chain->dir = CLUSTER_32(~0); + + for (i = 2; i < p_fs->num_clusters; i++) { + if (FAT_read(sb, new_clu, &read_clu) != 0) + return -1; + + if (read_clu == CLUSTER_32(0)) { + if (FAT_write(sb, new_clu, CLUSTER_32(~0)) < 0) + return -1; + num_clusters++; + + if (p_chain->dir == CLUSTER_32(~0)) + p_chain->dir = new_clu; + else { + if (FAT_write(sb, last_clu, new_clu) < 0) + return -1; + } + + last_clu = new_clu; + + if ((--num_alloc) == 0) { + p_fs->clu_srch_ptr = new_clu; + if (p_fs->used_clusters != (u32) ~0) + p_fs->used_clusters += num_clusters; + + return num_clusters; + } + } + if ((++new_clu) >= p_fs->num_clusters) + new_clu = 2; + } + + p_fs->clu_srch_ptr = new_clu; + if (p_fs->used_clusters != (u32) ~0) + p_fs->used_clusters += num_clusters; + + return num_clusters; +} /* end of fat_alloc_cluster */ + +s32 exfat_alloc_cluster(struct super_block *sb, s32 num_alloc, CHAIN_T *p_chain) +{ + s32 num_clusters = 0; + u32 hint_clu, new_clu, last_clu = CLUSTER_32(~0); + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + hint_clu = p_chain->dir; + if (hint_clu == CLUSTER_32(~0)) { + hint_clu = test_alloc_bitmap(sb, p_fs->clu_srch_ptr-2); + if (hint_clu == CLUSTER_32(~0)) + return 0; + } else if (hint_clu >= p_fs->num_clusters) { + hint_clu = 2; + p_chain->flags = 0x01; + } + + __set_sb_dirty(sb); + + p_chain->dir = CLUSTER_32(~0); + + while ((new_clu = test_alloc_bitmap(sb, hint_clu-2)) != CLUSTER_32(~0)) { + if (new_clu != hint_clu) { + if (p_chain->flags == 0x03) { + exfat_chain_cont_cluster(sb, p_chain->dir, num_clusters); + p_chain->flags = 0x01; + } + } + + if (set_alloc_bitmap(sb, new_clu-2) != FFS_SUCCESS) + return -1; + + num_clusters++; + + if (p_chain->flags == 0x01) { + if (FAT_write(sb, new_clu, CLUSTER_32(~0)) < 0) + return -1; + } + + if (p_chain->dir == CLUSTER_32(~0)) { + p_chain->dir = new_clu; + } else { + if (p_chain->flags == 0x01) { + if (FAT_write(sb, last_clu, new_clu) < 0) + return -1; + } + } + last_clu = new_clu; + + if ((--num_alloc) == 0) { + p_fs->clu_srch_ptr = hint_clu; + if (p_fs->used_clusters != (u32) ~0) + p_fs->used_clusters += num_clusters; + + p_chain->size += num_clusters; + return num_clusters; + } + + hint_clu = new_clu + 1; + if (hint_clu >= p_fs->num_clusters) { + hint_clu = 2; + + if (p_chain->flags == 0x03) { + exfat_chain_cont_cluster(sb, p_chain->dir, num_clusters); + p_chain->flags = 0x01; + } + } + } + + p_fs->clu_srch_ptr = hint_clu; + if (p_fs->used_clusters != (u32) ~0) + p_fs->used_clusters += num_clusters; + + p_chain->size += num_clusters; + return num_clusters; +} /* end of exfat_alloc_cluster */ + +void fat_free_cluster(struct super_block *sb, CHAIN_T *p_chain, s32 do_relse) +{ + s32 num_clusters = 0; + u32 clu, prev; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + int i; + sector_t sector; + + if ((p_chain->dir == CLUSTER_32(0)) || (p_chain->dir == CLUSTER_32(~0))) + return; + __set_sb_dirty(sb); + clu = p_chain->dir; + + if (p_chain->size <= 0) + return; + + do { + if (p_fs->dev_ejected) + break; + + if (do_relse) { + sector = START_SECTOR(clu); + for (i = 0; i < p_fs->sectors_per_clu; i++) + buf_release(sb, sector+i); + } + + prev = clu; + if (FAT_read(sb, clu, &clu) == -1) + break; + + if (FAT_write(sb, prev, CLUSTER_32(0)) < 0) + break; + num_clusters++; + + } while (clu != CLUSTER_32(~0)); + + if (p_fs->used_clusters != (u32) ~0) + p_fs->used_clusters -= num_clusters; +} /* end of fat_free_cluster */ + +void exfat_free_cluster(struct super_block *sb, CHAIN_T *p_chain, s32 do_relse) +{ + s32 num_clusters = 0; + u32 clu; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + int i; + sector_t sector; + + if ((p_chain->dir == CLUSTER_32(0)) || (p_chain->dir == CLUSTER_32(~0))) + return; + + if (p_chain->size <= 0) { + printk(KERN_ERR "[EXFAT] free_cluster : skip free-req clu:%u, " + "because of zero-size truncation\n" + ,p_chain->dir); + return; + } + + __set_sb_dirty(sb); + clu = p_chain->dir; + + if (p_chain->flags == 0x03) { + do { + if (do_relse) { + sector = START_SECTOR(clu); + for (i = 0; i < p_fs->sectors_per_clu; i++) + buf_release(sb, sector+i); + } + + if (clr_alloc_bitmap(sb, clu-2) != FFS_SUCCESS) + break; + clu++; + + num_clusters++; + } while (num_clusters < p_chain->size); + } else { + do { + if (p_fs->dev_ejected) + break; + + if (do_relse) { + sector = START_SECTOR(clu); + for (i = 0; i < p_fs->sectors_per_clu; i++) + buf_release(sb, sector+i); + } + + if (clr_alloc_bitmap(sb, clu-2) != FFS_SUCCESS) + break; + + if (FAT_read(sb, clu, &clu) == -1) + break; + num_clusters++; + } while ((clu != CLUSTER_32(0)) && (clu != CLUSTER_32(~0))); + } + + if (p_fs->used_clusters != (u32) ~0) + p_fs->used_clusters -= num_clusters; +} /* end of exfat_free_cluster */ + +u32 find_last_cluster(struct super_block *sb, CHAIN_T *p_chain) +{ + u32 clu, next; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + clu = p_chain->dir; + + if (p_chain->flags == 0x03) { + clu += p_chain->size - 1; + } else { + while ((FAT_read(sb, clu, &next) == 0) && (next != CLUSTER_32(~0))) { + if (p_fs->dev_ejected) + break; + clu = next; + } + } + + return clu; +} /* end of find_last_cluster */ + +s32 count_num_clusters(struct super_block *sb, CHAIN_T *p_chain) +{ + int i, count = 0; + u32 clu; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + if ((p_chain->dir == CLUSTER_32(0)) || (p_chain->dir == CLUSTER_32(~0))) + return 0; + + clu = p_chain->dir; + + if (p_chain->flags == 0x03) { + count = p_chain->size; + } else { + for (i = 2; i < p_fs->num_clusters; i++) { + count++; + if (FAT_read(sb, clu, &clu) != 0) + return 0; + if (clu == CLUSTER_32(~0)) + break; + } + } + + return count; +} /* end of count_num_clusters */ + +s32 fat_count_used_clusters(struct super_block *sb) +{ + int i, count = 0; + u32 clu; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + for (i = 2; i < p_fs->num_clusters; i++) { + if (FAT_read(sb, i, &clu) != 0) + break; + if (clu != CLUSTER_32(0)) + count++; + } + + return count; +} /* end of fat_count_used_clusters */ + +s32 exfat_count_used_clusters(struct super_block *sb) +{ + int i, map_i, map_b, count = 0; + u8 k; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + + map_i = map_b = 0; + + for (i = 2; i < p_fs->num_clusters; i += 8) { + k = *(((u8 *) p_fs->vol_amap[map_i]->b_data) + map_b); + count += used_bit[k]; + + if ((++map_b) >= p_bd->sector_size) { + map_i++; + map_b = 0; + } + } + + return count; +} /* end of exfat_count_used_clusters */ + +void exfat_chain_cont_cluster(struct super_block *sb, u32 chain, s32 len) +{ + if (len == 0) + return; + + while (len > 1) { + if (FAT_write(sb, chain, chain+1) < 0) + break; + chain++; + len--; + } + FAT_write(sb, chain, CLUSTER_32(~0)); +} /* end of exfat_chain_cont_cluster */ + +/* + * Allocation Bitmap Management Functions + */ + +s32 load_alloc_bitmap(struct super_block *sb) +{ + int i, j, ret; + u32 map_size; + u32 type; + sector_t sector; + CHAIN_T clu; + BMAP_DENTRY_T *ep; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + + clu.dir = p_fs->root_dir; + clu.flags = 0x01; + + while (clu.dir != CLUSTER_32(~0)) { + if (p_fs->dev_ejected) + break; + + for (i = 0; i < p_fs->dentries_per_clu; i++) { + ep = (BMAP_DENTRY_T *) get_entry_in_dir(sb, &clu, i, NULL); + if (!ep) + return FFS_MEDIAERR; + + type = p_fs->fs_func->get_entry_type((DENTRY_T *) ep); + + if (type == TYPE_UNUSED) + break; + if (type != TYPE_BITMAP) + continue; + + if (ep->flags == 0x0) { + p_fs->map_clu = GET32_A(ep->start_clu); + map_size = (u32) GET64_A(ep->size); + + p_fs->map_sectors = ((map_size-1) >> p_bd->sector_size_bits) + 1; + + p_fs->vol_amap = (struct buffer_head **) kmalloc(sizeof(struct buffer_head *) * p_fs->map_sectors, GFP_KERNEL); + if (p_fs->vol_amap == NULL) + return FFS_MEMORYERR; + + sector = START_SECTOR(p_fs->map_clu); + + for (j = 0; j < p_fs->map_sectors; j++) { + p_fs->vol_amap[j] = NULL; + ret = sector_read(sb, sector+j, &(p_fs->vol_amap[j]), 1); + if (ret != FFS_SUCCESS) { + /* release all buffers and free vol_amap */ + i = 0; + while (i < j) + brelse(p_fs->vol_amap[i++]); + + if (p_fs->vol_amap) + kfree(p_fs->vol_amap); + p_fs->vol_amap = NULL; + return ret; + } + } + + p_fs->pbr_bh = NULL; + return FFS_SUCCESS; + } + } + + if (FAT_read(sb, clu.dir, &(clu.dir)) != 0) + return FFS_MEDIAERR; + } + + return FFS_FORMATERR; +} /* end of load_alloc_bitmap */ + +void free_alloc_bitmap(struct super_block *sb) +{ + int i; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + brelse(p_fs->pbr_bh); + + for (i = 0; i < p_fs->map_sectors; i++) + __brelse(p_fs->vol_amap[i]); + + if (p_fs->vol_amap) + kfree(p_fs->vol_amap); + p_fs->vol_amap = NULL; +} /* end of free_alloc_bitmap */ + +s32 set_alloc_bitmap(struct super_block *sb, u32 clu) +{ + int i, b; + sector_t sector; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + + i = clu >> (p_bd->sector_size_bits + 3); + b = clu & ((p_bd->sector_size << 3) - 1); + + sector = START_SECTOR(p_fs->map_clu) + i; + + exfat_bitmap_set((u8 *) p_fs->vol_amap[i]->b_data, b); + + return sector_write(sb, sector, p_fs->vol_amap[i], 0); +} /* end of set_alloc_bitmap */ + +s32 clr_alloc_bitmap(struct super_block *sb, u32 clu) +{ + int i, b; + sector_t sector; +#ifdef CONFIG_EXFAT_DISCARD + struct exfat_sb_info *sbi = EXFAT_SB(sb); + struct exfat_mount_options *opts = &sbi->options; + int ret; +#endif /* CONFIG_EXFAT_DISCARD */ + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + + i = clu >> (p_bd->sector_size_bits + 3); + b = clu & ((p_bd->sector_size << 3) - 1); + + sector = START_SECTOR(p_fs->map_clu) + i; + + exfat_bitmap_clear((u8 *) p_fs->vol_amap[i]->b_data, b); + + return sector_write(sb, sector, p_fs->vol_amap[i], 0); + +#ifdef CONFIG_EXFAT_DISCARD + if (opts->discard) { +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37) + ret = sb_issue_discard(sb, START_SECTOR(clu), (1 << p_fs->sectors_per_clu_bits)); +#else + ret = sb_issue_discard(sb, START_SECTOR(clu), (1 << p_fs->sectors_per_clu_bits), GFP_NOFS, 0); +#endif + if (ret == -EOPNOTSUPP) { + printk(KERN_WARNING "discard not supported by device, disabling"); + opts->discard = 0; + } + } +#endif /* CONFIG_EXFAT_DISCARD */ +} /* end of clr_alloc_bitmap */ + +u32 test_alloc_bitmap(struct super_block *sb, u32 clu) +{ + int i, map_i, map_b; + u32 clu_base, clu_free; + u8 k, clu_mask; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + + clu_base = (clu & ~(0x7)) + 2; + clu_mask = (1 << (clu - clu_base + 2)) - 1; + + map_i = clu >> (p_bd->sector_size_bits + 3); + map_b = (clu >> 3) & p_bd->sector_size_mask; + + for (i = 2; i < p_fs->num_clusters; i += 8) { + k = *(((u8 *) p_fs->vol_amap[map_i]->b_data) + map_b); + if (clu_mask > 0) { + k |= clu_mask; + clu_mask = 0; + } + if (k < 0xFF) { + clu_free = clu_base + free_bit[k]; + if (clu_free < p_fs->num_clusters) + return clu_free; + } + clu_base += 8; + + if (((++map_b) >= p_bd->sector_size) || (clu_base >= p_fs->num_clusters)) { + if ((++map_i) >= p_fs->map_sectors) { + clu_base = 2; + map_i = 0; + } + map_b = 0; + } + } + + return CLUSTER_32(~0); +} /* end of test_alloc_bitmap */ + +void sync_alloc_bitmap(struct super_block *sb) +{ + int i; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + if (p_fs->vol_amap == NULL) + return; + + for (i = 0; i < p_fs->map_sectors; i++) + sync_dirty_buffer(p_fs->vol_amap[i]); +} /* end of sync_alloc_bitmap */ + +/* + * Upcase table Management Functions + */ +s32 __load_upcase_table(struct super_block *sb, sector_t sector, u32 num_sectors, u32 utbl_checksum) +{ + int i, ret = FFS_ERROR; + u32 j; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + struct buffer_head *tmp_bh = NULL; + sector_t end_sector = num_sectors + sector; + + u8 skip = FALSE; + u32 index = 0; + u16 uni = 0; + u16 **upcase_table; + + u32 checksum = 0; + + upcase_table = p_fs->vol_utbl = (u16 **) kmalloc(UTBL_COL_COUNT * sizeof(u16 *), GFP_KERNEL); + if (upcase_table == NULL) + return FFS_MEMORYERR; + memset(upcase_table, 0, UTBL_COL_COUNT * sizeof(u16 *)); + + while (sector < end_sector) { + ret = sector_read(sb, sector, &tmp_bh, 1); + if (ret != FFS_SUCCESS) { + DPRINTK("sector read (0x%llX)fail\n", (unsigned long long)sector); + goto error; + } + sector++; + + for (i = 0; i < p_bd->sector_size && index <= 0xFFFF; i += 2) { + uni = GET16(((u8 *) tmp_bh->b_data)+i); + + checksum = ((checksum & 1) ? 0x80000000 : 0) + (checksum >> 1) + *(((u8 *) tmp_bh->b_data)+i); + checksum = ((checksum & 1) ? 0x80000000 : 0) + (checksum >> 1) + *(((u8 *) tmp_bh->b_data)+(i+1)); + + if (skip) { + DPRINTK("skip from 0x%X ", index); + index += uni; + DPRINTK("to 0x%X (amount of 0x%X)\n", index, uni); + skip = FALSE; + } else if (uni == index) + index++; + else if (uni == 0xFFFF) + skip = TRUE; + else { /* uni != index , uni != 0xFFFF */ + u16 col_index = get_col_index(index); + + if (upcase_table[col_index] == NULL) { + DPRINTK("alloc = 0x%X\n", col_index); + upcase_table[col_index] = (u16 *) kmalloc(UTBL_ROW_COUNT * sizeof(u16), GFP_KERNEL); + if (upcase_table[col_index] == NULL) { + ret = FFS_MEMORYERR; + goto error; + } + + for (j = 0; j < UTBL_ROW_COUNT; j++) + upcase_table[col_index][j] = (col_index << LOW_INDEX_BIT) | j; + } + + upcase_table[col_index][get_row_index(index)] = uni; + index++; + } + } + } + if (index >= 0xFFFF && utbl_checksum == checksum) { + if (tmp_bh) + brelse(tmp_bh); + return FFS_SUCCESS; + } + ret = FFS_ERROR; +error: + if (tmp_bh) + brelse(tmp_bh); + free_upcase_table(sb); + return ret; +} + +s32 __load_default_upcase_table(struct super_block *sb) +{ + int i, ret = FFS_ERROR; + u32 j; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + u8 skip = FALSE; + u32 index = 0; + u16 uni = 0; + u16 **upcase_table; + + upcase_table = p_fs->vol_utbl = (u16 **) kmalloc(UTBL_COL_COUNT * sizeof(u16 *), GFP_KERNEL); + if (upcase_table == NULL) + return FFS_MEMORYERR; + memset(upcase_table, 0, UTBL_COL_COUNT * sizeof(u16 *)); + + for (i = 0; index <= 0xFFFF && i < NUM_UPCASE*2; i += 2) { + uni = GET16(uni_upcase + i); + if (skip) { + DPRINTK("skip from 0x%X ", index); + index += uni; + DPRINTK("to 0x%X (amount of 0x%X)\n", index, uni); + skip = FALSE; + } else if (uni == index) + index++; + else if (uni == 0xFFFF) + skip = TRUE; + else { /* uni != index , uni != 0xFFFF */ + u16 col_index = get_col_index(index); + + if (upcase_table[col_index] == NULL) { + DPRINTK("alloc = 0x%X\n", col_index); + upcase_table[col_index] = (u16 *) kmalloc(UTBL_ROW_COUNT * sizeof(u16), GFP_KERNEL); + if (upcase_table[col_index] == NULL) { + ret = FFS_MEMORYERR; + goto error; + } + + for (j = 0; j < UTBL_ROW_COUNT; j++) + upcase_table[col_index][j] = (col_index << LOW_INDEX_BIT) | j; + } + + upcase_table[col_index][get_row_index(index)] = uni; + index++; + } + } + + if (index >= 0xFFFF) + return FFS_SUCCESS; + +error: + /* FATAL error: default upcase table has error */ + free_upcase_table(sb); + return ret; +} + +s32 load_upcase_table(struct super_block *sb) +{ + int i; + u32 tbl_clu, tbl_size; + sector_t sector; + u32 type, num_sectors; + CHAIN_T clu; + CASE_DENTRY_T *ep; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + + clu.dir = p_fs->root_dir; + clu.flags = 0x01; + + if (p_fs->dev_ejected) + return FFS_MEDIAERR; + + while (clu.dir != CLUSTER_32(~0)) { + for (i = 0; i < p_fs->dentries_per_clu; i++) { + ep = (CASE_DENTRY_T *) get_entry_in_dir(sb, &clu, i, NULL); + if (!ep) + return FFS_MEDIAERR; + + type = p_fs->fs_func->get_entry_type((DENTRY_T *) ep); + + if (type == TYPE_UNUSED) + break; + if (type != TYPE_UPCASE) + continue; + + tbl_clu = GET32_A(ep->start_clu); + tbl_size = (u32) GET64_A(ep->size); + + sector = START_SECTOR(tbl_clu); + num_sectors = ((tbl_size-1) >> p_bd->sector_size_bits) + 1; + if (__load_upcase_table(sb, sector, num_sectors, GET32_A(ep->checksum)) != FFS_SUCCESS) + break; + else + return FFS_SUCCESS; + } + if (FAT_read(sb, clu.dir, &(clu.dir)) != 0) + return FFS_MEDIAERR; + } + /* load default upcase table */ + return __load_default_upcase_table(sb); +} /* end of load_upcase_table */ + +void free_upcase_table(struct super_block *sb) +{ + u32 i; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + u16 **upcase_table; + + upcase_table = p_fs->vol_utbl; + for (i = 0; i < UTBL_COL_COUNT; i++) { + if (upcase_table[i]) + kfree(upcase_table[i]); + } + + if (p_fs->vol_utbl) + kfree(p_fs->vol_utbl); + p_fs->vol_utbl = NULL; +} /* end of free_upcase_table */ + +/* + * Directory Entry Management Functions + */ + +u32 fat_get_entry_type(DENTRY_T *p_entry) +{ + DOS_DENTRY_T *ep = (DOS_DENTRY_T *) p_entry; + + if (*(ep->name) == 0x0) + return TYPE_UNUSED; + + else if (*(ep->name) == 0xE5) + return TYPE_DELETED; + + else if (ep->attr == ATTR_EXTEND) + return TYPE_EXTEND; + + else if ((ep->attr & (ATTR_SUBDIR|ATTR_VOLUME)) == ATTR_VOLUME) + return TYPE_VOLUME; + + else if ((ep->attr & (ATTR_SUBDIR|ATTR_VOLUME)) == ATTR_SUBDIR) + return TYPE_DIR; + + return TYPE_FILE; +} /* end of fat_get_entry_type */ + +u32 exfat_get_entry_type(DENTRY_T *p_entry) +{ + FILE_DENTRY_T *ep = (FILE_DENTRY_T *) p_entry; + + if (ep->type == 0x0) { + return TYPE_UNUSED; + } else if (ep->type < 0x80) { + return TYPE_DELETED; + } else if (ep->type == 0x80) { + return TYPE_INVALID; + } else if (ep->type < 0xA0) { + if (ep->type == 0x81) { + return TYPE_BITMAP; + } else if (ep->type == 0x82) { + return TYPE_UPCASE; + } else if (ep->type == 0x83) { + return TYPE_VOLUME; + } else if (ep->type == 0x85) { + if (GET16_A(ep->attr) & ATTR_SUBDIR) + return TYPE_DIR; + else + return TYPE_FILE; + } + return TYPE_CRITICAL_PRI; + } else if (ep->type < 0xC0) { + if (ep->type == 0xA0) + return TYPE_GUID; + else if (ep->type == 0xA1) + return TYPE_PADDING; + else if (ep->type == 0xA2) + return TYPE_ACLTAB; + return TYPE_BENIGN_PRI; + } else if (ep->type < 0xE0) { + if (ep->type == 0xC0) + return TYPE_STREAM; + else if (ep->type == 0xC1) + return TYPE_EXTEND; + else if (ep->type == 0xC2) + return TYPE_ACL; + return TYPE_CRITICAL_SEC; + } + + return TYPE_BENIGN_SEC; +} /* end of exfat_get_entry_type */ + +void fat_set_entry_type(DENTRY_T *p_entry, u32 type) +{ + DOS_DENTRY_T *ep = (DOS_DENTRY_T *) p_entry; + + if (type == TYPE_UNUSED) + *(ep->name) = 0x0; + + else if (type == TYPE_DELETED) + *(ep->name) = 0xE5; + + else if (type == TYPE_EXTEND) + ep->attr = ATTR_EXTEND; + + else if (type == TYPE_DIR) + ep->attr = ATTR_SUBDIR; + + else if (type == TYPE_FILE) + ep->attr = ATTR_ARCHIVE; + + else if (type == TYPE_SYMLINK) + ep->attr = ATTR_ARCHIVE | ATTR_SYMLINK; +} /* end of fat_set_entry_type */ + +void exfat_set_entry_type(DENTRY_T *p_entry, u32 type) +{ + FILE_DENTRY_T *ep = (FILE_DENTRY_T *) p_entry; + + if (type == TYPE_UNUSED) { + ep->type = 0x0; + } else if (type == TYPE_DELETED) { + ep->type &= ~0x80; + } else if (type == TYPE_STREAM) { + ep->type = 0xC0; + } else if (type == TYPE_EXTEND) { + ep->type = 0xC1; + } else if (type == TYPE_BITMAP) { + ep->type = 0x81; + } else if (type == TYPE_UPCASE) { + ep->type = 0x82; + } else if (type == TYPE_VOLUME) { + ep->type = 0x83; + } else if (type == TYPE_DIR) { + ep->type = 0x85; + SET16_A(ep->attr, ATTR_SUBDIR); + } else if (type == TYPE_FILE) { + ep->type = 0x85; + SET16_A(ep->attr, ATTR_ARCHIVE); + } else if (type == TYPE_SYMLINK) { + ep->type = 0x85; + SET16_A(ep->attr, ATTR_ARCHIVE | ATTR_SYMLINK); + } +} /* end of exfat_set_entry_type */ + +u32 fat_get_entry_attr(DENTRY_T *p_entry) +{ + DOS_DENTRY_T *ep = (DOS_DENTRY_T *) p_entry; + return (u32) ep->attr; +} /* end of fat_get_entry_attr */ + +u32 exfat_get_entry_attr(DENTRY_T *p_entry) +{ + FILE_DENTRY_T *ep = (FILE_DENTRY_T *) p_entry; + return (u32) GET16_A(ep->attr); +} /* end of exfat_get_entry_attr */ + +void fat_set_entry_attr(DENTRY_T *p_entry, u32 attr) +{ + DOS_DENTRY_T *ep = (DOS_DENTRY_T *) p_entry; + ep->attr = (u8) attr; +} /* end of fat_set_entry_attr */ + +void exfat_set_entry_attr(DENTRY_T *p_entry, u32 attr) +{ + FILE_DENTRY_T *ep = (FILE_DENTRY_T *) p_entry; + SET16_A(ep->attr, (u16) attr); +} /* end of exfat_set_entry_attr */ + +u8 fat_get_entry_flag(DENTRY_T *p_entry) +{ + return 0x01; +} /* end of fat_get_entry_flag */ + +u8 exfat_get_entry_flag(DENTRY_T *p_entry) +{ + STRM_DENTRY_T *ep = (STRM_DENTRY_T *) p_entry; + return ep->flags; +} /* end of exfat_get_entry_flag */ + +void fat_set_entry_flag(DENTRY_T *p_entry, u8 flags) +{ +} /* end of fat_set_entry_flag */ + +void exfat_set_entry_flag(DENTRY_T *p_entry, u8 flags) +{ + STRM_DENTRY_T *ep = (STRM_DENTRY_T *) p_entry; + ep->flags = flags; +} /* end of exfat_set_entry_flag */ + +u32 fat_get_entry_clu0(DENTRY_T *p_entry) +{ + DOS_DENTRY_T *ep = (DOS_DENTRY_T *) p_entry; + return ((u32) GET16_A(ep->start_clu_hi) << 16) | GET16_A(ep->start_clu_lo); +} /* end of fat_get_entry_clu0 */ + +u32 exfat_get_entry_clu0(DENTRY_T *p_entry) +{ + STRM_DENTRY_T *ep = (STRM_DENTRY_T *) p_entry; + return GET32_A(ep->start_clu); +} /* end of exfat_get_entry_clu0 */ + +void fat_set_entry_clu0(DENTRY_T *p_entry, u32 start_clu) +{ + DOS_DENTRY_T *ep = (DOS_DENTRY_T *) p_entry; + SET16_A(ep->start_clu_lo, CLUSTER_16(start_clu)); + SET16_A(ep->start_clu_hi, CLUSTER_16(start_clu >> 16)); +} /* end of fat_set_entry_clu0 */ + +void exfat_set_entry_clu0(DENTRY_T *p_entry, u32 start_clu) +{ + STRM_DENTRY_T *ep = (STRM_DENTRY_T *) p_entry; + SET32_A(ep->start_clu, start_clu); +} /* end of exfat_set_entry_clu0 */ + +u64 fat_get_entry_size(DENTRY_T *p_entry) +{ + DOS_DENTRY_T *ep = (DOS_DENTRY_T *) p_entry; + return (u64) GET32_A(ep->size); +} /* end of fat_get_entry_size */ + +u64 exfat_get_entry_size(DENTRY_T *p_entry) +{ + STRM_DENTRY_T *ep = (STRM_DENTRY_T *) p_entry; + return GET64_A(ep->valid_size); +} /* end of exfat_get_entry_size */ + +void fat_set_entry_size(DENTRY_T *p_entry, u64 size) +{ + DOS_DENTRY_T *ep = (DOS_DENTRY_T *) p_entry; + SET32_A(ep->size, (u32) size); +} /* end of fat_set_entry_size */ + +void exfat_set_entry_size(DENTRY_T *p_entry, u64 size) +{ + STRM_DENTRY_T *ep = (STRM_DENTRY_T *) p_entry; + SET64_A(ep->valid_size, size); + SET64_A(ep->size, size); +} /* end of exfat_set_entry_size */ + +void fat_get_entry_time(DENTRY_T *p_entry, TIMESTAMP_T *tp, u8 mode) +{ + u16 t = 0x00, d = 0x21; + DOS_DENTRY_T *ep = (DOS_DENTRY_T *) p_entry; + + switch (mode) { + case TM_CREATE: + t = GET16_A(ep->create_time); + d = GET16_A(ep->create_date); + break; + case TM_MODIFY: + t = GET16_A(ep->modify_time); + d = GET16_A(ep->modify_date); + break; + } + + tp->sec = (t & 0x001F) << 1; + tp->min = (t >> 5) & 0x003F; + tp->hour = (t >> 11); + tp->day = (d & 0x001F); + tp->mon = (d >> 5) & 0x000F; + tp->year = (d >> 9); +} /* end of fat_get_entry_time */ + +void exfat_get_entry_time(DENTRY_T *p_entry, TIMESTAMP_T *tp, u8 mode) +{ + u16 t = 0x00, d = 0x21; + FILE_DENTRY_T *ep = (FILE_DENTRY_T *) p_entry; + + switch (mode) { + case TM_CREATE: + t = GET16_A(ep->create_time); + d = GET16_A(ep->create_date); + break; + case TM_MODIFY: + t = GET16_A(ep->modify_time); + d = GET16_A(ep->modify_date); + break; + case TM_ACCESS: + t = GET16_A(ep->access_time); + d = GET16_A(ep->access_date); + break; + } + + tp->sec = (t & 0x001F) << 1; + tp->min = (t >> 5) & 0x003F; + tp->hour = (t >> 11); + tp->day = (d & 0x001F); + tp->mon = (d >> 5) & 0x000F; + tp->year = (d >> 9); +} /* end of exfat_get_entry_time */ + +void fat_set_entry_time(DENTRY_T *p_entry, TIMESTAMP_T *tp, u8 mode) +{ + u16 t, d; + DOS_DENTRY_T *ep = (DOS_DENTRY_T *) p_entry; + + t = (tp->hour << 11) | (tp->min << 5) | (tp->sec >> 1); + d = (tp->year << 9) | (tp->mon << 5) | tp->day; + + switch (mode) { + case TM_CREATE: + SET16_A(ep->create_time, t); + SET16_A(ep->create_date, d); + break; + case TM_MODIFY: + SET16_A(ep->modify_time, t); + SET16_A(ep->modify_date, d); + break; + } +} /* end of fat_set_entry_time */ + +void exfat_set_entry_time(DENTRY_T *p_entry, TIMESTAMP_T *tp, u8 mode) +{ + u16 t, d; + FILE_DENTRY_T *ep = (FILE_DENTRY_T *) p_entry; + + t = (tp->hour << 11) | (tp->min << 5) | (tp->sec >> 1); + d = (tp->year << 9) | (tp->mon << 5) | tp->day; + + switch (mode) { + case TM_CREATE: + SET16_A(ep->create_time, t); + SET16_A(ep->create_date, d); + break; + case TM_MODIFY: + SET16_A(ep->modify_time, t); + SET16_A(ep->modify_date, d); + break; + case TM_ACCESS: + SET16_A(ep->access_time, t); + SET16_A(ep->access_date, d); + break; + } +} /* end of exfat_set_entry_time */ + +s32 fat_init_dir_entry(struct super_block *sb, CHAIN_T *p_dir, s32 entry, u32 type, + u32 start_clu, u64 size) +{ + sector_t sector; + DOS_DENTRY_T *dos_ep; + + dos_ep = (DOS_DENTRY_T *) get_entry_in_dir(sb, p_dir, entry, §or); + if (!dos_ep) + return FFS_MEDIAERR; + + init_dos_entry(dos_ep, type, start_clu); + buf_modify(sb, sector); + + return FFS_SUCCESS; +} /* end of fat_init_dir_entry */ + +s32 exfat_init_dir_entry(struct super_block *sb, CHAIN_T *p_dir, s32 entry, u32 type, + u32 start_clu, u64 size) +{ + sector_t sector; + u8 flags; + FILE_DENTRY_T *file_ep; + STRM_DENTRY_T *strm_ep; + + flags = (type == TYPE_FILE) ? 0x01 : 0x03; + + /* we cannot use get_entry_set_in_dir here because file ep is not initialized yet */ + file_ep = (FILE_DENTRY_T *) get_entry_in_dir(sb, p_dir, entry, §or); + if (!file_ep) + return FFS_MEDIAERR; + + strm_ep = (STRM_DENTRY_T *) get_entry_in_dir(sb, p_dir, entry+1, §or); + if (!strm_ep) + return FFS_MEDIAERR; + + init_file_entry(file_ep, type); + buf_modify(sb, sector); + + init_strm_entry(strm_ep, flags, start_clu, size); + buf_modify(sb, sector); + + return FFS_SUCCESS; +} /* end of exfat_init_dir_entry */ + +s32 fat_init_ext_entry(struct super_block *sb, CHAIN_T *p_dir, s32 entry, s32 num_entries, + UNI_NAME_T *p_uniname, DOS_NAME_T *p_dosname) +{ + int i; + sector_t sector; + u8 chksum; + u16 *uniname = p_uniname->name; + DOS_DENTRY_T *dos_ep; + EXT_DENTRY_T *ext_ep; + + dos_ep = (DOS_DENTRY_T *) get_entry_in_dir(sb, p_dir, entry, §or); + if (!dos_ep) + return FFS_MEDIAERR; + + dos_ep->lcase = p_dosname->name_case; + memcpy(dos_ep->name, p_dosname->name, DOS_NAME_LENGTH); + buf_modify(sb, sector); + + if ((--num_entries) > 0) { + chksum = calc_checksum_1byte((void *) dos_ep->name, DOS_NAME_LENGTH, 0); + + for (i = 1; i < num_entries; i++) { + ext_ep = (EXT_DENTRY_T *) get_entry_in_dir(sb, p_dir, entry-i, §or); + if (!ext_ep) + return FFS_MEDIAERR; + + init_ext_entry(ext_ep, i, chksum, uniname); + buf_modify(sb, sector); + uniname += 13; + } + + ext_ep = (EXT_DENTRY_T *) get_entry_in_dir(sb, p_dir, entry-i, §or); + if (!ext_ep) + return FFS_MEDIAERR; + + init_ext_entry(ext_ep, i+0x40, chksum, uniname); + buf_modify(sb, sector); + } + + return FFS_SUCCESS; +} /* end of fat_init_ext_entry */ + +s32 exfat_init_ext_entry(struct super_block *sb, CHAIN_T *p_dir, s32 entry, s32 num_entries, + UNI_NAME_T *p_uniname, DOS_NAME_T *p_dosname) +{ + int i; + sector_t sector; + u16 *uniname = p_uniname->name; + FILE_DENTRY_T *file_ep; + STRM_DENTRY_T *strm_ep; + NAME_DENTRY_T *name_ep; + + file_ep = (FILE_DENTRY_T *) get_entry_in_dir(sb, p_dir, entry, §or); + if (!file_ep) + return FFS_MEDIAERR; + + file_ep->num_ext = (u8)(num_entries - 1); + buf_modify(sb, sector); + + strm_ep = (STRM_DENTRY_T *) get_entry_in_dir(sb, p_dir, entry+1, §or); + if (!strm_ep) + return FFS_MEDIAERR; + + strm_ep->name_len = p_uniname->name_len; + SET16_A(strm_ep->name_hash, p_uniname->name_hash); + buf_modify(sb, sector); + + for (i = 2; i < num_entries; i++) { + name_ep = (NAME_DENTRY_T *) get_entry_in_dir(sb, p_dir, entry+i, §or); + if (!name_ep) + return FFS_MEDIAERR; + + init_name_entry(name_ep, uniname); + buf_modify(sb, sector); + uniname += 15; + } + + update_dir_checksum(sb, p_dir, entry); + + return FFS_SUCCESS; +} /* end of exfat_init_ext_entry */ + +void init_dos_entry(DOS_DENTRY_T *ep, u32 type, u32 start_clu) +{ + TIMESTAMP_T tm, *tp; + + fat_set_entry_type((DENTRY_T *) ep, type); + SET16_A(ep->start_clu_lo, CLUSTER_16(start_clu)); + SET16_A(ep->start_clu_hi, CLUSTER_16(start_clu >> 16)); + SET32_A(ep->size, 0); + + tp = tm_current(&tm); + fat_set_entry_time((DENTRY_T *) ep, tp, TM_CREATE); + fat_set_entry_time((DENTRY_T *) ep, tp, TM_MODIFY); + SET16_A(ep->access_date, 0); + ep->create_time_ms = 0; +} /* end of init_dos_entry */ + +void init_ext_entry(EXT_DENTRY_T *ep, s32 order, u8 chksum, u16 *uniname) +{ + int i; + u8 end = FALSE; + + fat_set_entry_type((DENTRY_T *) ep, TYPE_EXTEND); + ep->order = (u8) order; + ep->sysid = 0; + ep->checksum = chksum; + SET16_A(ep->start_clu, 0); + + for (i = 0; i < 10; i += 2) { + if (!end) { + SET16(ep->unicode_0_4+i, *uniname); + if (*uniname == 0x0) + end = TRUE; + else + uniname++; + } else { + SET16(ep->unicode_0_4+i, 0xFFFF); + } + } + + for (i = 0; i < 12; i += 2) { + if (!end) { + SET16_A(ep->unicode_5_10+i, *uniname); + if (*uniname == 0x0) + end = TRUE; + else + uniname++; + } else { + SET16_A(ep->unicode_5_10+i, 0xFFFF); + } + } + + for (i = 0; i < 4; i += 2) { + if (!end) { + SET16_A(ep->unicode_11_12+i, *uniname); + if (*uniname == 0x0) + end = TRUE; + else + uniname++; + } else { + SET16_A(ep->unicode_11_12+i, 0xFFFF); + } + } +} /* end of init_ext_entry */ + +void init_file_entry(FILE_DENTRY_T *ep, u32 type) +{ + TIMESTAMP_T tm, *tp; + + exfat_set_entry_type((DENTRY_T *) ep, type); + + tp = tm_current(&tm); + exfat_set_entry_time((DENTRY_T *) ep, tp, TM_CREATE); + exfat_set_entry_time((DENTRY_T *) ep, tp, TM_MODIFY); + exfat_set_entry_time((DENTRY_T *) ep, tp, TM_ACCESS); + ep->create_time_ms = 0; + ep->modify_time_ms = 0; + ep->access_time_ms = 0; +} /* end of init_file_entry */ + +void init_strm_entry(STRM_DENTRY_T *ep, u8 flags, u32 start_clu, u64 size) +{ + exfat_set_entry_type((DENTRY_T *) ep, TYPE_STREAM); + ep->flags = flags; + SET32_A(ep->start_clu, start_clu); + SET64_A(ep->valid_size, size); + SET64_A(ep->size, size); +} /* end of init_strm_entry */ + +void init_name_entry(NAME_DENTRY_T *ep, u16 *uniname) +{ + int i; + + exfat_set_entry_type((DENTRY_T *) ep, TYPE_EXTEND); + ep->flags = 0x0; + + for (i = 0; i < 30; i++, i++) { + SET16_A(ep->unicode_0_14+i, *uniname); + if (*uniname == 0x0) + break; + uniname++; + } +} /* end of init_name_entry */ + +void fat_delete_dir_entry(struct super_block *sb, CHAIN_T *p_dir, s32 entry, s32 order, s32 num_entries) +{ + int i; + sector_t sector; + DENTRY_T *ep; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + for (i = num_entries-1; i >= order; i--) { + ep = get_entry_in_dir(sb, p_dir, entry-i, §or); + if (!ep) + return; + + p_fs->fs_func->set_entry_type(ep, TYPE_DELETED); + buf_modify(sb, sector); + } +} /* end of fat_delete_dir_entry */ + +void exfat_delete_dir_entry(struct super_block *sb, CHAIN_T *p_dir, s32 entry, s32 order, s32 num_entries) +{ + int i; + sector_t sector; + DENTRY_T *ep; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + for (i = order; i < num_entries; i++) { + ep = get_entry_in_dir(sb, p_dir, entry+i, §or); + if (!ep) + return; + + p_fs->fs_func->set_entry_type(ep, TYPE_DELETED); + buf_modify(sb, sector); + } +} /* end of exfat_delete_dir_entry */ + +void update_dir_checksum(struct super_block *sb, CHAIN_T *p_dir, s32 entry) +{ + int i, num_entries; + sector_t sector; + u16 chksum; + FILE_DENTRY_T *file_ep; + DENTRY_T *ep; + + file_ep = (FILE_DENTRY_T *) get_entry_in_dir(sb, p_dir, entry, §or); + if (!file_ep) + return; + + buf_lock(sb, sector); + + num_entries = (s32) file_ep->num_ext + 1; + chksum = calc_checksum_2byte((void *) file_ep, DENTRY_SIZE, 0, CS_DIR_ENTRY); + + for (i = 1; i < num_entries; i++) { + ep = get_entry_in_dir(sb, p_dir, entry+i, NULL); + if (!ep) { + buf_unlock(sb, sector); + return; + } + + chksum = calc_checksum_2byte((void *) ep, DENTRY_SIZE, chksum, CS_DEFAULT); + } + + SET16_A(file_ep->checksum, chksum); + buf_modify(sb, sector); + buf_unlock(sb, sector); +} /* end of update_dir_checksum */ + +void update_dir_checksum_with_entry_set(struct super_block *sb, ENTRY_SET_CACHE_T *es) +{ + DENTRY_T *ep; + u16 chksum = 0; + s32 chksum_type = CS_DIR_ENTRY, i; + + ep = (DENTRY_T *)&(es->__buf); + for (i = 0; i < es->num_entries; i++) { + DPRINTK("update_dir_checksum_with_entry_set ep %p\n", ep); + chksum = calc_checksum_2byte((void *) ep, DENTRY_SIZE, chksum, chksum_type); + ep++; + chksum_type = CS_DEFAULT; + } + + ep = (DENTRY_T *)&(es->__buf); + SET16_A(((FILE_DENTRY_T *)ep)->checksum, chksum); + write_whole_entry_set(sb, es); +} + +static s32 _walk_fat_chain(struct super_block *sb, CHAIN_T *p_dir, s32 byte_offset, u32 *clu) +{ + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + s32 clu_offset; + u32 cur_clu; + + clu_offset = byte_offset >> p_fs->cluster_size_bits; + cur_clu = p_dir->dir; + + if (p_dir->flags == 0x03) { + cur_clu += clu_offset; + } else { + while (clu_offset > 0) { + if (FAT_read(sb, cur_clu, &cur_clu) == -1) + return FFS_MEDIAERR; + clu_offset--; + } + } + + if (clu) + *clu = cur_clu; + return FFS_SUCCESS; +} +s32 find_location(struct super_block *sb, CHAIN_T *p_dir, s32 entry, sector_t *sector, s32 *offset) +{ + s32 off, ret; + u32 clu = 0; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + + off = entry << DENTRY_SIZE_BITS; + + if (p_dir->dir == CLUSTER_32(0)) { /* FAT16 root_dir */ + *offset = off & p_bd->sector_size_mask; + *sector = off >> p_bd->sector_size_bits; + *sector += p_fs->root_start_sector; + } else { + ret = _walk_fat_chain(sb, p_dir, off, &clu); + if (ret != FFS_SUCCESS) + return ret; + + off &= p_fs->cluster_size - 1; /* byte offset in cluster */ + + *offset = off & p_bd->sector_size_mask; /* byte offset in sector */ + *sector = off >> p_bd->sector_size_bits; /* sector offset in cluster */ + *sector += START_SECTOR(clu); + } + return FFS_SUCCESS; +} /* end of find_location */ + +DENTRY_T *get_entry_with_sector(struct super_block *sb, sector_t sector, s32 offset) +{ + u8 *buf; + + buf = buf_getblk(sb, sector); + + if (buf == NULL) + return NULL; + + return (DENTRY_T *)(buf + offset); +} /* end of get_entry_with_sector */ + +DENTRY_T *get_entry_in_dir(struct super_block *sb, CHAIN_T *p_dir, s32 entry, sector_t *sector) +{ + s32 off; + sector_t sec; + u8 *buf; + + if (find_location(sb, p_dir, entry, &sec, &off) != FFS_SUCCESS) + return NULL; + + buf = buf_getblk(sb, sec); + + if (buf == NULL) + return NULL; + + if (sector != NULL) + *sector = sec; + return (DENTRY_T *)(buf + off); +} /* end of get_entry_in_dir */ + + +/* returns a set of dentries for a file or dir. + * Note that this is a copy (dump) of dentries so that user should call write_entry_set() + * to apply changes made in this entry set to the real device. + * in: + * sb+p_dir+entry: indicates a file/dir + * type: specifies how many dentries should be included. + * out: + * file_ep: will point the first dentry(= file dentry) on success + * return: + * pointer of entry set on success, + * NULL on failure. + */ + +#define ES_MODE_STARTED 0 +#define ES_MODE_GET_FILE_ENTRY 1 +#define ES_MODE_GET_STRM_ENTRY 2 +#define ES_MODE_GET_NAME_ENTRY 3 +#define ES_MODE_GET_CRITICAL_SEC_ENTRY 4 +ENTRY_SET_CACHE_T *get_entry_set_in_dir(struct super_block *sb, CHAIN_T *p_dir, s32 entry, u32 type, DENTRY_T **file_ep) +{ + s32 off, ret, byte_offset; + u32 clu = 0; + sector_t sec; + u32 entry_type; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + ENTRY_SET_CACHE_T *es = NULL; + DENTRY_T *ep, *pos; + u8 *buf; + u8 num_entries; + s32 mode = ES_MODE_STARTED; + + DPRINTK("get_entry_set_in_dir entered\n"); + DPRINTK("p_dir dir %u flags %x size %d\n", p_dir->dir, p_dir->flags, p_dir->size); + + byte_offset = entry << DENTRY_SIZE_BITS; + ret = _walk_fat_chain(sb, p_dir, byte_offset, &clu); + if (ret != FFS_SUCCESS) + return NULL; + + + byte_offset &= p_fs->cluster_size - 1; /* byte offset in cluster */ + + off = byte_offset & p_bd->sector_size_mask; /* byte offset in sector */ + sec = byte_offset >> p_bd->sector_size_bits; /* sector offset in cluster */ + sec += START_SECTOR(clu); + + buf = buf_getblk(sb, sec); + if (buf == NULL) + goto err_out; + + + ep = (DENTRY_T *)(buf + off); + entry_type = p_fs->fs_func->get_entry_type(ep); + + if ((entry_type != TYPE_FILE) + && (entry_type != TYPE_DIR)) + goto err_out; + + if (type == ES_ALL_ENTRIES) + num_entries = ((FILE_DENTRY_T *)ep)->num_ext+1; + else + num_entries = type; + + DPRINTK("trying to kmalloc %zx bytes for %d entries\n", offsetof(ENTRY_SET_CACHE_T, __buf) + (num_entries) * sizeof(DENTRY_T), num_entries); + es = kmalloc(offsetof(ENTRY_SET_CACHE_T, __buf) + (num_entries) * sizeof(DENTRY_T), GFP_KERNEL); + if (es == NULL) + goto err_out; + + es->num_entries = num_entries; + es->sector = sec; + es->offset = off; + es->alloc_flag = p_dir->flags; + + pos = (DENTRY_T *) &(es->__buf); + + while(num_entries) { + /* instead of copying whole sector, we will check every entry. + * this will provide minimum stablity and consistancy. + */ + + entry_type = p_fs->fs_func->get_entry_type(ep); + + if ((entry_type == TYPE_UNUSED) || (entry_type == TYPE_DELETED)) + goto err_out; + + switch (mode) { + case ES_MODE_STARTED: + if ((entry_type == TYPE_FILE) || (entry_type == TYPE_DIR)) + mode = ES_MODE_GET_FILE_ENTRY; + else + goto err_out; + break; + case ES_MODE_GET_FILE_ENTRY: + if (entry_type == TYPE_STREAM) + mode = ES_MODE_GET_STRM_ENTRY; + else + goto err_out; + break; + case ES_MODE_GET_STRM_ENTRY: + if (entry_type == TYPE_EXTEND) + mode = ES_MODE_GET_NAME_ENTRY; + else + goto err_out; + break; + case ES_MODE_GET_NAME_ENTRY: + if (entry_type == TYPE_EXTEND) + break; + else if (entry_type == TYPE_STREAM) + goto err_out; + else if (entry_type & TYPE_CRITICAL_SEC) + mode = ES_MODE_GET_CRITICAL_SEC_ENTRY; + else + goto err_out; + break; + case ES_MODE_GET_CRITICAL_SEC_ENTRY: + if ((entry_type == TYPE_EXTEND) || (entry_type == TYPE_STREAM)) + goto err_out; + else if ((entry_type & TYPE_CRITICAL_SEC) != TYPE_CRITICAL_SEC) + goto err_out; + break; + } + + memcpy(pos, ep, sizeof(DENTRY_T)); + + if (--num_entries == 0) + break; + + if (((off + DENTRY_SIZE) & p_bd->sector_size_mask) < (off & p_bd->sector_size_mask)) { + /* get the next sector */ + if (IS_LAST_SECTOR_IN_CLUSTER(sec)) { + if (es->alloc_flag == 0x03) { + clu++; + } else { + if (FAT_read(sb, clu, &clu) == -1) + goto err_out; + } + sec = START_SECTOR(clu); + } else { + sec++; + } + buf = buf_getblk(sb, sec); + if (buf == NULL) + goto err_out; + off = 0; + ep = (DENTRY_T *)(buf); + } else { + ep++; + off += DENTRY_SIZE; + } + pos++; + } + + if (file_ep) + *file_ep = (DENTRY_T *)&(es->__buf); + + DPRINTK("es sec %llu offset %d flags %d, num_entries %u buf ptr %p\n", + (unsigned long long)es->sector, es->offset, es->alloc_flag, + es->num_entries, &(es->__buf)); + DPRINTK("get_entry_set_in_dir exited %p\n", es); + return es; +err_out: + DPRINTK("get_entry_set_in_dir exited NULL (es %p)\n", es); + if (es) + kfree(es); + return NULL; +} + +void release_entry_set(ENTRY_SET_CACHE_T *es) +{ + DPRINTK("release_entry_set %p\n", es); + if (es) + kfree(es); +} + + +static s32 __write_partial_entries_in_entry_set(struct super_block *sb, ENTRY_SET_CACHE_T *es, sector_t sec, s32 off, u32 count) +{ + s32 num_entries, buf_off = (off - es->offset); + u32 remaining_byte_in_sector, copy_entries; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + u32 clu; + u8 *buf, *esbuf = (u8 *)&(es->__buf); + + DPRINTK("__write_partial_entries_in_entry_set entered\n"); + DPRINTK("es %p sec %llu off %d count %d\n", es, (unsigned long long)sec, off, count); + num_entries = count; + + while (num_entries) { + /* white per sector base */ + remaining_byte_in_sector = (1 << p_bd->sector_size_bits) - off; + copy_entries = MIN(remaining_byte_in_sector >> DENTRY_SIZE_BITS , num_entries); + buf = buf_getblk(sb, sec); + if (buf == NULL) + goto err_out; + DPRINTK("es->buf %p buf_off %u\n", esbuf, buf_off); + DPRINTK("copying %d entries from %p to sector %llu\n", copy_entries, (esbuf + buf_off), (unsigned long long)sec); + memcpy(buf + off, esbuf + buf_off, copy_entries << DENTRY_SIZE_BITS); + buf_modify(sb, sec); + num_entries -= copy_entries; + + if (num_entries) { + /* get next sector */ + if (IS_LAST_SECTOR_IN_CLUSTER(sec)) { + clu = GET_CLUSTER_FROM_SECTOR(sec); + if (es->alloc_flag == 0x03) { + clu++; + } else { + if (FAT_read(sb, clu, &clu) == -1) + goto err_out; + } + sec = START_SECTOR(clu); + } else { + sec++; + } + off = 0; + buf_off += copy_entries << DENTRY_SIZE_BITS; + } + } + + DPRINTK("__write_partial_entries_in_entry_set exited successfully\n"); + return FFS_SUCCESS; +err_out: + DPRINTK("__write_partial_entries_in_entry_set failed\n"); + return FFS_ERROR; +} + +/* write back all entries in entry set */ +s32 write_whole_entry_set(struct super_block *sb, ENTRY_SET_CACHE_T *es) +{ + return __write_partial_entries_in_entry_set(sb, es, es->sector, es->offset, es->num_entries); +} + +/* write back some entries in entry set */ +s32 write_partial_entries_in_entry_set (struct super_block *sb, ENTRY_SET_CACHE_T *es, DENTRY_T *ep, u32 count) +{ + s32 ret, byte_offset, off; + u32 clu=0; + sector_t sec; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + CHAIN_T dir; + + /* vaidity check */ + if (ep + count > ((DENTRY_T *)&(es->__buf)) + es->num_entries) + return FFS_ERROR; + + dir.dir = GET_CLUSTER_FROM_SECTOR(es->sector); + dir.flags = es->alloc_flag; + dir.size = 0xffffffff; /* XXX */ + + byte_offset = (es->sector - START_SECTOR(dir.dir)) << p_bd->sector_size_bits; + byte_offset += ((void **)ep - &(es->__buf)) + es->offset; + + ret =_walk_fat_chain(sb, &dir, byte_offset, &clu); + if (ret != FFS_SUCCESS) + return ret; + byte_offset &= p_fs->cluster_size - 1; /* byte offset in cluster */ + off = byte_offset & p_bd->sector_size_mask; /* byte offset in sector */ + sec = byte_offset >> p_bd->sector_size_bits; /* sector offset in cluster */ + sec += START_SECTOR(clu); + return __write_partial_entries_in_entry_set(sb, es, sec, off, count); +} + +/* search EMPTY CONTINUOUS "num_entries" entries */ +s32 search_deleted_or_unused_entry(struct super_block *sb, CHAIN_T *p_dir, s32 num_entries) +{ + int i, dentry, num_empty = 0; + s32 dentries_per_clu; + u32 type; + CHAIN_T clu; + DENTRY_T *ep; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */ + dentries_per_clu = p_fs->dentries_in_root; + else + dentries_per_clu = p_fs->dentries_per_clu; + + if (p_fs->hint_uentry.dir == p_dir->dir) { + if (p_fs->hint_uentry.entry == -1) + return -1; + + clu.dir = p_fs->hint_uentry.clu.dir; + clu.size = p_fs->hint_uentry.clu.size; + clu.flags = p_fs->hint_uentry.clu.flags; + + dentry = p_fs->hint_uentry.entry; + } else { + p_fs->hint_uentry.entry = -1; + + clu.dir = p_dir->dir; + clu.size = p_dir->size; + clu.flags = p_dir->flags; + + dentry = 0; + } + + while (clu.dir != CLUSTER_32(~0)) { + if (p_fs->dev_ejected) + break; + + if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */ + i = dentry % dentries_per_clu; + else + i = dentry & (dentries_per_clu-1); + + for (; i < dentries_per_clu; i++, dentry++) { + ep = get_entry_in_dir(sb, &clu, i, NULL); + if (!ep) + return -1; + + type = p_fs->fs_func->get_entry_type(ep); + + if (type == TYPE_UNUSED) { + num_empty++; + if (p_fs->hint_uentry.entry == -1) { + p_fs->hint_uentry.dir = p_dir->dir; + p_fs->hint_uentry.entry = dentry; + + p_fs->hint_uentry.clu.dir = clu.dir; + p_fs->hint_uentry.clu.size = clu.size; + p_fs->hint_uentry.clu.flags = clu.flags; + } + } else if (type == TYPE_DELETED) { + num_empty++; + } else { + num_empty = 0; + } + + if (num_empty >= num_entries) { + p_fs->hint_uentry.dir = CLUSTER_32(~0); + p_fs->hint_uentry.entry = -1; + + if (p_fs->vol_type == EXFAT) + return dentry - (num_entries-1); + else + return dentry; + } + } + + if (p_dir->dir == CLUSTER_32(0)) + break; /* FAT16 root_dir */ + + if (clu.flags == 0x03) { + if ((--clu.size) > 0) + clu.dir++; + else + clu.dir = CLUSTER_32(~0); + } else { + if (FAT_read(sb, clu.dir, &(clu.dir)) != 0) + return -1; + } + } + + return -1; +} /* end of search_deleted_or_unused_entry */ + +s32 find_empty_entry(struct inode *inode, CHAIN_T *p_dir, s32 num_entries) +{ + s32 ret, dentry; + u32 last_clu; + sector_t sector; + u64 size = 0; + CHAIN_T clu; + DENTRY_T *ep = NULL; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + FILE_ID_T *fid = &(EXFAT_I(inode)->fid); + + if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */ + return search_deleted_or_unused_entry(sb, p_dir, num_entries); + + while ((dentry = search_deleted_or_unused_entry(sb, p_dir, num_entries)) < 0) { + if (p_fs->dev_ejected) + break; + + if (p_fs->vol_type == EXFAT) { + if (p_dir->dir != p_fs->root_dir) + size = i_size_read(inode); + } + + last_clu = find_last_cluster(sb, p_dir); + clu.dir = last_clu + 1; + clu.size = 0; + clu.flags = p_dir->flags; + + /* (1) allocate a cluster */ + ret = p_fs->fs_func->alloc_cluster(sb, 1, &clu); + if (ret < 1) + return -1; + + if (clear_cluster(sb, clu.dir) != FFS_SUCCESS) + return -1; + + /* (2) append to the FAT chain */ + if (clu.flags != p_dir->flags) { + exfat_chain_cont_cluster(sb, p_dir->dir, p_dir->size); + p_dir->flags = 0x01; + p_fs->hint_uentry.clu.flags = 0x01; + } + if (clu.flags == 0x01) + if (FAT_write(sb, last_clu, clu.dir) < 0) + return -1; + + if (p_fs->hint_uentry.entry == -1) { + p_fs->hint_uentry.dir = p_dir->dir; + p_fs->hint_uentry.entry = p_dir->size << (p_fs->cluster_size_bits - DENTRY_SIZE_BITS); + + p_fs->hint_uentry.clu.dir = clu.dir; + p_fs->hint_uentry.clu.size = 0; + p_fs->hint_uentry.clu.flags = clu.flags; + } + p_fs->hint_uentry.clu.size++; + p_dir->size++; + + /* (3) update the directory entry */ + if (p_fs->vol_type == EXFAT) { + if (p_dir->dir != p_fs->root_dir) { + size += p_fs->cluster_size; + + ep = get_entry_in_dir(sb, &(fid->dir), fid->entry+1, §or); + if (!ep) + return -1; + p_fs->fs_func->set_entry_size(ep, size); + p_fs->fs_func->set_entry_flag(ep, p_dir->flags); + buf_modify(sb, sector); + + update_dir_checksum(sb, &(fid->dir), fid->entry); + } + } + + i_size_write(inode, i_size_read(inode)+p_fs->cluster_size); + EXFAT_I(inode)->mmu_private += p_fs->cluster_size; + EXFAT_I(inode)->fid.size += p_fs->cluster_size; + EXFAT_I(inode)->fid.flags = p_dir->flags; + inode->i_blocks += 1 << (p_fs->cluster_size_bits - 9); + } + + return dentry; +} /* end of find_empty_entry */ + +/* return values of fat_find_dir_entry() + >= 0 : return dir entiry position with the name in dir + -1 : (root dir, ".") it is the root dir itself + -2 : entry with the name does not exist */ +s32 fat_find_dir_entry(struct super_block *sb, CHAIN_T *p_dir, UNI_NAME_T *p_uniname, s32 num_entries, DOS_NAME_T *p_dosname, u32 type) +{ + int i, dentry = 0, lossy = FALSE, len; + s32 order = 0, is_feasible_entry = TRUE, has_ext_entry = FALSE; + s32 dentries_per_clu; + u32 entry_type; + u16 entry_uniname[14], *uniname = NULL, unichar; + CHAIN_T clu; + DENTRY_T *ep; + DOS_DENTRY_T *dos_ep; + EXT_DENTRY_T *ext_ep; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + if (p_dir->dir == p_fs->root_dir) { + if ((!nls_uniname_cmp(sb, p_uniname->name, (u16 *) UNI_CUR_DIR_NAME)) || + (!nls_uniname_cmp(sb, p_uniname->name, (u16 *) UNI_PAR_DIR_NAME))) + return -1; // special case, root directory itself + } + + if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */ + dentries_per_clu = p_fs->dentries_in_root; + else + dentries_per_clu = p_fs->dentries_per_clu; + + clu.dir = p_dir->dir; + clu.flags = p_dir->flags; + + while (clu.dir != CLUSTER_32(~0)) { + if (p_fs->dev_ejected) + break; + + for (i = 0; i < dentries_per_clu; i++, dentry++) { + ep = get_entry_in_dir(sb, &clu, i, NULL); + if (!ep) + return -2; + + entry_type = p_fs->fs_func->get_entry_type(ep); + + if ((entry_type == TYPE_FILE) || (entry_type == TYPE_DIR)) { + if ((type == TYPE_ALL) || (type == entry_type)) { + if (is_feasible_entry && has_ext_entry) + return dentry; + + dos_ep = (DOS_DENTRY_T *) ep; + if ((!lossy) && (!nls_dosname_cmp(sb, p_dosname->name, dos_ep->name))) + return dentry; + } + is_feasible_entry = TRUE; + has_ext_entry = FALSE; + } else if (entry_type == TYPE_EXTEND) { + if (is_feasible_entry) { + ext_ep = (EXT_DENTRY_T *) ep; + if (ext_ep->order > 0x40) { + order = (s32)(ext_ep->order - 0x40); + uniname = p_uniname->name + 13 * (order-1); + } else { + order = (s32) ext_ep->order; + uniname -= 13; + } + + len = extract_uni_name_from_ext_entry(ext_ep, entry_uniname, order); + + unichar = *(uniname+len); + *(uniname+len) = 0x0; + + if (nls_uniname_cmp(sb, uniname, entry_uniname)) + is_feasible_entry = FALSE; + + *(uniname+len) = unichar; + } + has_ext_entry = TRUE; + } else if (entry_type == TYPE_UNUSED) { + return -2; + } else { + is_feasible_entry = TRUE; + has_ext_entry = FALSE; + } + } + + if (p_dir->dir == CLUSTER_32(0)) + break; /* FAT16 root_dir */ + + if (FAT_read(sb, clu.dir, &(clu.dir)) != 0) + return -2; + } + + return -2; +} /* end of fat_find_dir_entry */ + +/* return values of exfat_find_dir_entry() + >= 0 : return dir entiry position with the name in dir + -1 : (root dir, ".") it is the root dir itself + -2 : entry with the name does not exist */ +s32 exfat_find_dir_entry(struct super_block *sb, CHAIN_T *p_dir, UNI_NAME_T *p_uniname, s32 num_entries, DOS_NAME_T *p_dosname, u32 type) +{ + int i = 0, dentry = 0, num_ext_entries = 0, len, step; + s32 order = 0, is_feasible_entry = FALSE; + s32 dentries_per_clu, num_empty = 0; + u32 entry_type; + u16 entry_uniname[16], *uniname = NULL, unichar; + CHAIN_T clu; + DENTRY_T *ep; + FILE_DENTRY_T *file_ep; + STRM_DENTRY_T *strm_ep; + NAME_DENTRY_T *name_ep; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + if (p_dir->dir == p_fs->root_dir) { + if ((!nls_uniname_cmp(sb, p_uniname->name, (u16 *) UNI_CUR_DIR_NAME)) || + (!nls_uniname_cmp(sb, p_uniname->name, (u16 *) UNI_PAR_DIR_NAME))) + return -1; // special case, root directory itself + } + + if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */ + dentries_per_clu = p_fs->dentries_in_root; + else + dentries_per_clu = p_fs->dentries_per_clu; + + clu.dir = p_dir->dir; + clu.size = p_dir->size; + clu.flags = p_dir->flags; + + p_fs->hint_uentry.dir = p_dir->dir; + p_fs->hint_uentry.entry = -1; + + while (clu.dir != CLUSTER_32(~0)) { + if (p_fs->dev_ejected) + break; + + while (i < dentries_per_clu) { + ep = get_entry_in_dir(sb, &clu, i, NULL); + if (!ep) + return -2; + + entry_type = p_fs->fs_func->get_entry_type(ep); + step = 1; + + if ((entry_type == TYPE_UNUSED) || (entry_type == TYPE_DELETED)) { + is_feasible_entry = FALSE; + + if (p_fs->hint_uentry.entry == -1) { + num_empty++; + + if (num_empty == 1) { + p_fs->hint_uentry.clu.dir = clu.dir; + p_fs->hint_uentry.clu.size = clu.size; + p_fs->hint_uentry.clu.flags = clu.flags; + } + if ((num_empty >= num_entries) || (entry_type == TYPE_UNUSED)) + p_fs->hint_uentry.entry = dentry - (num_empty-1); + } + + if (entry_type == TYPE_UNUSED) + return -2; + } else { + num_empty = 0; + + if ((entry_type == TYPE_FILE) || (entry_type == TYPE_DIR)) { + file_ep = (FILE_DENTRY_T *) ep; + if ((type == TYPE_ALL) || (type == entry_type)) { + num_ext_entries = file_ep->num_ext; + is_feasible_entry = TRUE; + } else { + is_feasible_entry = FALSE; + step = file_ep->num_ext + 1; + } + } else if (entry_type == TYPE_STREAM) { + if (is_feasible_entry) { + strm_ep = (STRM_DENTRY_T *) ep; + if (p_uniname->name_hash == GET16_A(strm_ep->name_hash) && + p_uniname->name_len == strm_ep->name_len) { + order = 1; + } else { + is_feasible_entry = FALSE; + step = num_ext_entries; + } + } + } else if (entry_type == TYPE_EXTEND) { + if (is_feasible_entry) { + name_ep = (NAME_DENTRY_T *) ep; + + if ((++order) == 2) + uniname = p_uniname->name; + else + uniname += 15; + + len = extract_uni_name_from_name_entry(name_ep, entry_uniname, order); + + unichar = *(uniname+len); + *(uniname+len) = 0x0; + + if (nls_uniname_cmp(sb, uniname, entry_uniname)) { + is_feasible_entry = FALSE; + step = num_ext_entries - order + 1; + } else if (order == num_ext_entries) { + p_fs->hint_uentry.dir = CLUSTER_32(~0); + p_fs->hint_uentry.entry = -1; + return dentry - (num_ext_entries); + } + + *(uniname+len) = unichar; + } + } else { + is_feasible_entry = FALSE; + } + } + + i += step; + dentry += step; + } + + i -= dentries_per_clu; + + if (p_dir->dir == CLUSTER_32(0)) + break; /* FAT16 root_dir */ + + if (clu.flags == 0x03) { + if ((--clu.size) > 0) + clu.dir++; + else + clu.dir = CLUSTER_32(~0); + } else { + if (FAT_read(sb, clu.dir, &(clu.dir)) != 0) + return -2; + } + } + + return -2; +} /* end of exfat_find_dir_entry */ + +/* returns -1 on error */ +s32 fat_count_ext_entries(struct super_block *sb, CHAIN_T *p_dir, s32 entry, DENTRY_T *p_entry) +{ + s32 count = 0; + u8 chksum; + DOS_DENTRY_T *dos_ep = (DOS_DENTRY_T *) p_entry; + EXT_DENTRY_T *ext_ep; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + chksum = calc_checksum_1byte((void *) dos_ep->name, DOS_NAME_LENGTH, 0); + + for (entry--; entry >= 0; entry--) { + ext_ep = (EXT_DENTRY_T *) get_entry_in_dir(sb, p_dir, entry, NULL); + if (!ext_ep) + return -1; + + if ((p_fs->fs_func->get_entry_type((DENTRY_T *) ext_ep) == TYPE_EXTEND) && + (ext_ep->checksum == chksum)) { + count++; + if (ext_ep->order > 0x40) + return count; + } else { + return count; + } + } + + return count; +} /* end of fat_count_ext_entries */ + +/* returns -1 on error */ +s32 exfat_count_ext_entries(struct super_block *sb, CHAIN_T *p_dir, s32 entry, DENTRY_T *p_entry) +{ + int i, count = 0; + u32 type; + FILE_DENTRY_T *file_ep = (FILE_DENTRY_T *) p_entry; + DENTRY_T *ext_ep; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + for (i = 0, entry++; i < file_ep->num_ext; i++, entry++) { + ext_ep = get_entry_in_dir(sb, p_dir, entry, NULL); + if (!ext_ep) + return -1; + + type = p_fs->fs_func->get_entry_type(ext_ep); + if ((type == TYPE_EXTEND) || (type == TYPE_STREAM)) + count++; + else + return count; + } + + return count; +} /* end of exfat_count_ext_entries */ + +/* returns -1 on error */ +s32 count_dos_name_entries(struct super_block *sb, CHAIN_T *p_dir, u32 type) +{ + int i, count = 0; + s32 dentries_per_clu; + u32 entry_type; + CHAIN_T clu; + DENTRY_T *ep; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */ + dentries_per_clu = p_fs->dentries_in_root; + else + dentries_per_clu = p_fs->dentries_per_clu; + + clu.dir = p_dir->dir; + clu.size = p_dir->size; + clu.flags = p_dir->flags; + + while (clu.dir != CLUSTER_32(~0)) { + if (p_fs->dev_ejected) + break; + + for (i = 0; i < dentries_per_clu; i++) { + ep = get_entry_in_dir(sb, &clu, i, NULL); + if (!ep) + return -1; + + entry_type = p_fs->fs_func->get_entry_type(ep); + + if (entry_type == TYPE_UNUSED) + return count; + if (!(type & TYPE_CRITICAL_PRI) && !(type & TYPE_BENIGN_PRI)) + continue; + + if ((type == TYPE_ALL) || (type == entry_type)) + count++; + } + + if (p_dir->dir == CLUSTER_32(0)) + break; /* FAT16 root_dir */ + + if (clu.flags == 0x03) { + if ((--clu.size) > 0) + clu.dir++; + else + clu.dir = CLUSTER_32(~0); + } else { + if (FAT_read(sb, clu.dir, &(clu.dir)) != 0) + return -1; + } + } + + return count; +} /* end of count_dos_name_entries */ + +bool is_dir_empty(struct super_block *sb, CHAIN_T *p_dir) +{ + int i, count = 0; + s32 dentries_per_clu; + u32 type; + CHAIN_T clu; + DENTRY_T *ep; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */ + dentries_per_clu = p_fs->dentries_in_root; + else + dentries_per_clu = p_fs->dentries_per_clu; + + clu.dir = p_dir->dir; + clu.size = p_dir->size; + clu.flags = p_dir->flags; + + while (clu.dir != CLUSTER_32(~0)) { + if (p_fs->dev_ejected) + break; + + for (i = 0; i < dentries_per_clu; i++) { + ep = get_entry_in_dir(sb, &clu, i, NULL); + if (!ep) + break; + + type = p_fs->fs_func->get_entry_type(ep); + + if (type == TYPE_UNUSED) + return TRUE; + if ((type != TYPE_FILE) && (type != TYPE_DIR)) + continue; + + if (p_dir->dir == CLUSTER_32(0)) { /* FAT16 root_dir */ + return FALSE; + } else { + if (p_fs->vol_type == EXFAT) + return FALSE; + if ((p_dir->dir == p_fs->root_dir) || ((++count) > 2)) + return FALSE; + } + } + + if (p_dir->dir == CLUSTER_32(0)) + break; /* FAT16 root_dir */ + + if (clu.flags == 0x03) { + if ((--clu.size) > 0) + clu.dir++; + else + clu.dir = CLUSTER_32(~0); + } else { + if (FAT_read(sb, clu.dir, &(clu.dir)) != 0) + break; + } + } + + return TRUE; +} /* end of is_dir_empty */ + +/* + * Name Conversion Functions + */ + +/* input : dir, uni_name + output : num_of_entry, dos_name(format : aaaaaa~1.bbb) */ +s32 get_num_entries_and_dos_name(struct super_block *sb, CHAIN_T *p_dir, UNI_NAME_T *p_uniname, s32 *entries, DOS_NAME_T *p_dosname) +{ + s32 ret, num_entries, lossy = FALSE; + char **r; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + num_entries = p_fs->fs_func->calc_num_entries(p_uniname); + if (num_entries == 0) + return FFS_INVALIDPATH; + + if (p_fs->vol_type != EXFAT) { + nls_uniname_to_dosname(sb, p_dosname, p_uniname, &lossy); + + if (lossy) { + ret = fat_generate_dos_name(sb, p_dir, p_dosname); + if (ret) + return ret; + } else { + for (r = reserved_names; *r; r++) { + if (!strncmp((void *) p_dosname->name, *r, 8)) + return FFS_INVALIDPATH; + } + + if (p_dosname->name_case != 0xFF) + num_entries = 1; + } + + if (num_entries > 1) + p_dosname->name_case = 0x0; + } + + *entries = num_entries; + + return FFS_SUCCESS; +} /* end of get_num_entries_and_dos_name */ + +void get_uni_name_from_dos_entry(struct super_block *sb, DOS_DENTRY_T *ep, UNI_NAME_T *p_uniname, u8 mode) +{ + DOS_NAME_T dos_name; + + if (mode == 0x0) + dos_name.name_case = 0x0; + else + dos_name.name_case = ep->lcase; + + memcpy(dos_name.name, ep->name, DOS_NAME_LENGTH); + nls_dosname_to_uniname(sb, p_uniname, &dos_name); +} /* end of get_uni_name_from_dos_entry */ + +void fat_get_uni_name_from_ext_entry(struct super_block *sb, CHAIN_T *p_dir, s32 entry, u16 *uniname) +{ + int i; + EXT_DENTRY_T *ep; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + for (entry--, i = 1; entry >= 0; entry--, i++) { + ep = (EXT_DENTRY_T *) get_entry_in_dir(sb, p_dir, entry, NULL); + if (!ep) + return; + + if (p_fs->fs_func->get_entry_type((DENTRY_T *) ep) == TYPE_EXTEND) { + extract_uni_name_from_ext_entry(ep, uniname, i); + if (ep->order > 0x40) + return; + } else { + return; + } + + uniname += 13; + } +} /* end of fat_get_uni_name_from_ext_entry */ + +void exfat_get_uni_name_from_ext_entry(struct super_block *sb, CHAIN_T *p_dir, s32 entry, u16 *uniname) +{ + int i; + DENTRY_T *ep; + ENTRY_SET_CACHE_T *es; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + es = get_entry_set_in_dir(sb, p_dir, entry, ES_ALL_ENTRIES, &ep); + if (es == NULL || es->num_entries < 3) { + if (es) + release_entry_set(es); + return; + } + + ep += 2; + + /* + * First entry : file entry + * Second entry : stream-extension entry + * Third entry : first file-name entry + * So, the index of first file-name dentry should start from 2. + */ + for (i = 2; i < es->num_entries; i++, ep++) { + if (p_fs->fs_func->get_entry_type(ep) == TYPE_EXTEND) + extract_uni_name_from_name_entry((NAME_DENTRY_T *)ep, uniname, i); + else + goto out; + uniname += 15; + } + +out: + release_entry_set(es); +} /* end of exfat_get_uni_name_from_ext_entry */ + +s32 extract_uni_name_from_ext_entry(EXT_DENTRY_T *ep, u16 *uniname, s32 order) +{ + int i, len = 0; + + for (i = 0; i < 10; i += 2) { + *uniname = GET16(ep->unicode_0_4+i); + if (*uniname == 0x0) + return len; + uniname++; + len++; + } + + if (order < 20) { + for (i = 0; i < 12; i += 2) { + *uniname = GET16_A(ep->unicode_5_10+i); + if (*uniname == 0x0) + return len; + uniname++; + len++; + } + } else { + for (i = 0; i < 8; i += 2) { + *uniname = GET16_A(ep->unicode_5_10+i); + if (*uniname == 0x0) + return len; + uniname++; + len++; + } + *uniname = 0x0; /* uniname[MAX_NAME_LENGTH-1] */ + return len; + } + + for (i = 0; i < 4; i += 2) { + *uniname = GET16_A(ep->unicode_11_12+i); + if (*uniname == 0x0) + return len; + uniname++; + len++; + } + + *uniname = 0x0; + return len; + +} /* end of extract_uni_name_from_ext_entry */ + +s32 extract_uni_name_from_name_entry(NAME_DENTRY_T *ep, u16 *uniname, s32 order) +{ + int i, len = 0; + + for (i = 0; i < 30; i += 2) { + *uniname = GET16_A(ep->unicode_0_14+i); + if (*uniname == 0x0) + return len; + uniname++; + len++; + } + + *uniname = 0x0; + return len; + +} /* end of extract_uni_name_from_name_entry */ + +s32 fat_generate_dos_name(struct super_block *sb, CHAIN_T *p_dir, DOS_NAME_T *p_dosname) +{ + int i, j, count = 0, count_begin = FALSE; + s32 dentries_per_clu; + u32 type; + u8 bmap[128/* 1 ~ 1023 */]; + CHAIN_T clu; + DOS_DENTRY_T *ep; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + memset(bmap, 0, sizeof bmap); + exfat_bitmap_set(bmap, 0); + + if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */ + dentries_per_clu = p_fs->dentries_in_root; + else + dentries_per_clu = p_fs->dentries_per_clu; + + clu.dir = p_dir->dir; + clu.flags = p_dir->flags; + + while (clu.dir != CLUSTER_32(~0)) { + if (p_fs->dev_ejected) + break; + + for (i = 0; i < dentries_per_clu; i++) { + ep = (DOS_DENTRY_T *) get_entry_in_dir(sb, &clu, i, NULL); + if (!ep) + return FFS_MEDIAERR; + + type = p_fs->fs_func->get_entry_type((DENTRY_T *) ep); + + if (type == TYPE_UNUSED) + break; + if ((type != TYPE_FILE) && (type != TYPE_DIR)) + continue; + + count = 0; + count_begin = FALSE; + + for (j = 0; j < 8; j++) { + if (ep->name[j] == ' ') + break; + + if (ep->name[j] == '~') { + count_begin = TRUE; + } else if (count_begin) { + if ((ep->name[j] >= '0') && (ep->name[j] <= '9')) { + count = count * 10 + (ep->name[j] - '0'); + } else { + count = 0; + count_begin = FALSE; + } + } + } + + if ((count > 0) && (count < 1024)) + exfat_bitmap_set(bmap, count); + } + + if (p_dir->dir == CLUSTER_32(0)) + break; /* FAT16 root_dir */ + + if (FAT_read(sb, clu.dir, &(clu.dir)) != 0) + return FFS_MEDIAERR; + } + + count = 0; + for (i = 0; i < 128; i++) { + if (bmap[i] != 0xFF) { + for (j = 0; j < 8; j++) { + if (exfat_bitmap_test(&(bmap[i]), j) == 0) { + count = (i << 3) + j; + break; + } + } + if (count != 0) + break; + } + } + + if ((count == 0) || (count >= 1024)) + return FFS_FILEEXIST; + else + fat_attach_count_to_dos_name(p_dosname->name, count); + + /* Now dos_name has DOS~????.EXT */ + return FFS_SUCCESS; +} /* end of generate_dos_name */ + +void fat_attach_count_to_dos_name(u8 *dosname, s32 count) +{ + int i, j, length; + char str_count[6]; + + snprintf(str_count, sizeof str_count, "~%d", count); + length = strlen(str_count); + + i = j = 0; + while (j <= (8 - length)) { + i = j; + if (dosname[j] == ' ') + break; + if (dosname[j] & 0x80) + j += 2; + else + j++; + } + + for (j = 0; j < length; i++, j++) + dosname[i] = (u8) str_count[j]; + + if (i == 7) + dosname[7] = ' '; + +} /* end of attach_count_to_dos_name */ + +s32 fat_calc_num_entries(UNI_NAME_T *p_uniname) +{ + s32 len; + + len = p_uniname->name_len; + if (len == 0) + return 0; + + /* 1 dos name entry + extended entries */ + return (len-1) / 13 + 2; + +} /* end of calc_num_enties */ + +s32 exfat_calc_num_entries(UNI_NAME_T *p_uniname) +{ + s32 len; + + len = p_uniname->name_len; + if (len == 0) + return 0; + + /* 1 file entry + 1 stream entry + name entries */ + return (len-1) / 15 + 3; + +} /* end of exfat_calc_num_enties */ + +u8 calc_checksum_1byte(void *data, s32 len, u8 chksum) +{ + int i; + u8 *c = (u8 *) data; + + for (i = 0; i < len; i++, c++) + chksum = (((chksum & 1) << 7) | ((chksum & 0xFE) >> 1)) + *c; + + return chksum; +} /* end of calc_checksum_1byte */ + +u16 calc_checksum_2byte(void *data, s32 len, u16 chksum, s32 type) +{ + int i; + u8 *c = (u8 *) data; + + switch (type) { + case CS_DIR_ENTRY: + for (i = 0; i < len; i++, c++) { + if ((i == 2) || (i == 3)) + continue; + chksum = (((chksum & 1) << 15) | ((chksum & 0xFFFE) >> 1)) + (u16) *c; + } + break; + default + : + for (i = 0; i < len; i++, c++) + chksum = (((chksum & 1) << 15) | ((chksum & 0xFFFE) >> 1)) + (u16) *c; + } + + return chksum; +} /* end of calc_checksum_2byte */ + +u32 calc_checksum_4byte(void *data, s32 len, u32 chksum, s32 type) +{ + int i; + u8 *c = (u8 *) data; + + switch (type) { + case CS_PBR_SECTOR: + for (i = 0; i < len; i++, c++) { + if ((i == 106) || (i == 107) || (i == 112)) + continue; + chksum = (((chksum & 1) << 31) | ((chksum & 0xFFFFFFFE) >> 1)) + (u32) *c; + } + break; + default + : + for (i = 0; i < len; i++, c++) + chksum = (((chksum & 1) << 31) | ((chksum & 0xFFFFFFFE) >> 1)) + (u32) *c; + } + + return chksum; +} /* end of calc_checksum_4byte */ + +/* + * Name Resolution Functions + */ + +/* return values of resolve_path() + > 0 : return the length of the path + < 0 : return error */ +s32 resolve_path(struct inode *inode, char *path, CHAIN_T *p_dir, UNI_NAME_T *p_uniname) +{ + s32 lossy = FALSE; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + FILE_ID_T *fid = &(EXFAT_I(inode)->fid); + + if (strlen(path) >= (MAX_NAME_LENGTH * MAX_CHARSET_SIZE)) + return FFS_INVALIDPATH; + + strcpy(name_buf, path); + + nls_cstring_to_uniname(sb, p_uniname, name_buf, &lossy); + if (lossy) + return FFS_INVALIDPATH; + + fid->size = i_size_read(inode); + + p_dir->dir = fid->start_clu; + p_dir->size = (s32)(fid->size >> p_fs->cluster_size_bits); + p_dir->flags = fid->flags; + + return FFS_SUCCESS; +} + +/* + * File Operation Functions + */ +static FS_FUNC_T fat_fs_func = { + .alloc_cluster = fat_alloc_cluster, + .free_cluster = fat_free_cluster, + .count_used_clusters = fat_count_used_clusters, + + .init_dir_entry = fat_init_dir_entry, + .init_ext_entry = fat_init_ext_entry, + .find_dir_entry = fat_find_dir_entry, + .delete_dir_entry = fat_delete_dir_entry, + .get_uni_name_from_ext_entry = fat_get_uni_name_from_ext_entry, + .count_ext_entries = fat_count_ext_entries, + .calc_num_entries = fat_calc_num_entries, + + .get_entry_type = fat_get_entry_type, + .set_entry_type = fat_set_entry_type, + .get_entry_attr = fat_get_entry_attr, + .set_entry_attr = fat_set_entry_attr, + .get_entry_flag = fat_get_entry_flag, + .set_entry_flag = fat_set_entry_flag, + .get_entry_clu0 = fat_get_entry_clu0, + .set_entry_clu0 = fat_set_entry_clu0, + .get_entry_size = fat_get_entry_size, + .set_entry_size = fat_set_entry_size, + .get_entry_time = fat_get_entry_time, + .set_entry_time = fat_set_entry_time, +}; + + +s32 fat16_mount(struct super_block *sb, PBR_SECTOR_T *p_pbr) +{ + s32 num_reserved, num_root_sectors; + BPB16_T *p_bpb = (BPB16_T *) p_pbr->bpb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + + if (p_bpb->num_fats == 0) + return FFS_FORMATERR; + + num_root_sectors = GET16(p_bpb->num_root_entries) << DENTRY_SIZE_BITS; + num_root_sectors = ((num_root_sectors-1) >> p_bd->sector_size_bits) + 1; + + p_fs->sectors_per_clu = p_bpb->sectors_per_clu; + p_fs->sectors_per_clu_bits = ilog2(p_bpb->sectors_per_clu); + p_fs->cluster_size_bits = p_fs->sectors_per_clu_bits + p_bd->sector_size_bits; + p_fs->cluster_size = 1 << p_fs->cluster_size_bits; + + p_fs->num_FAT_sectors = GET16(p_bpb->num_fat_sectors); + + p_fs->FAT1_start_sector = p_fs->PBR_sector + GET16(p_bpb->num_reserved); + if (p_bpb->num_fats == 1) + p_fs->FAT2_start_sector = p_fs->FAT1_start_sector; + else + p_fs->FAT2_start_sector = p_fs->FAT1_start_sector + p_fs->num_FAT_sectors; + + p_fs->root_start_sector = p_fs->FAT2_start_sector + p_fs->num_FAT_sectors; + p_fs->data_start_sector = p_fs->root_start_sector + num_root_sectors; + + p_fs->num_sectors = GET16(p_bpb->num_sectors); + if (p_fs->num_sectors == 0) + p_fs->num_sectors = GET32(p_bpb->num_huge_sectors); + + num_reserved = p_fs->data_start_sector - p_fs->PBR_sector; + p_fs->num_clusters = ((p_fs->num_sectors - num_reserved) >> p_fs->sectors_per_clu_bits) + 2; + /* because the cluster index starts with 2 */ + + if (p_fs->num_clusters < FAT12_THRESHOLD) + p_fs->vol_type = FAT12; + else + p_fs->vol_type = FAT16; + p_fs->vol_id = GET32(p_bpb->vol_serial); + + p_fs->root_dir = 0; + p_fs->dentries_in_root = GET16(p_bpb->num_root_entries); + p_fs->dentries_per_clu = 1 << (p_fs->cluster_size_bits - DENTRY_SIZE_BITS); + + p_fs->vol_flag = VOL_CLEAN; + p_fs->clu_srch_ptr = 2; + p_fs->used_clusters = (u32) ~0; + + p_fs->fs_func = &fat_fs_func; + + return FFS_SUCCESS; +} /* end of fat16_mount */ + +s32 fat32_mount(struct super_block *sb, PBR_SECTOR_T *p_pbr) +{ + s32 num_reserved; + BPB32_T *p_bpb = (BPB32_T *) p_pbr->bpb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + + if (p_bpb->num_fats == 0) + return FFS_FORMATERR; + + p_fs->sectors_per_clu = p_bpb->sectors_per_clu; + p_fs->sectors_per_clu_bits = ilog2(p_bpb->sectors_per_clu); + p_fs->cluster_size_bits = p_fs->sectors_per_clu_bits + p_bd->sector_size_bits; + p_fs->cluster_size = 1 << p_fs->cluster_size_bits; + + p_fs->num_FAT_sectors = GET32(p_bpb->num_fat32_sectors); + + p_fs->FAT1_start_sector = p_fs->PBR_sector + GET16(p_bpb->num_reserved); + if (p_bpb->num_fats == 1) + p_fs->FAT2_start_sector = p_fs->FAT1_start_sector; + else + p_fs->FAT2_start_sector = p_fs->FAT1_start_sector + p_fs->num_FAT_sectors; + + p_fs->root_start_sector = p_fs->FAT2_start_sector + p_fs->num_FAT_sectors; + p_fs->data_start_sector = p_fs->root_start_sector; + + p_fs->num_sectors = GET32(p_bpb->num_huge_sectors); + num_reserved = p_fs->data_start_sector - p_fs->PBR_sector; + + p_fs->num_clusters = ((p_fs->num_sectors-num_reserved) >> p_fs->sectors_per_clu_bits) + 2; + /* because the cluster index starts with 2 */ + + p_fs->vol_type = FAT32; + p_fs->vol_id = GET32(p_bpb->vol_serial); + + p_fs->root_dir = GET32(p_bpb->root_cluster); + p_fs->dentries_in_root = 0; + p_fs->dentries_per_clu = 1 << (p_fs->cluster_size_bits - DENTRY_SIZE_BITS); + + p_fs->vol_flag = VOL_CLEAN; + p_fs->clu_srch_ptr = 2; + p_fs->used_clusters = (u32) ~0; + + p_fs->fs_func = &fat_fs_func; + + return FFS_SUCCESS; +} /* end of fat32_mount */ + +static FS_FUNC_T exfat_fs_func = { + .alloc_cluster = exfat_alloc_cluster, + .free_cluster = exfat_free_cluster, + .count_used_clusters = exfat_count_used_clusters, + + .init_dir_entry = exfat_init_dir_entry, + .init_ext_entry = exfat_init_ext_entry, + .find_dir_entry = exfat_find_dir_entry, + .delete_dir_entry = exfat_delete_dir_entry, + .get_uni_name_from_ext_entry = exfat_get_uni_name_from_ext_entry, + .count_ext_entries = exfat_count_ext_entries, + .calc_num_entries = exfat_calc_num_entries, + + .get_entry_type = exfat_get_entry_type, + .set_entry_type = exfat_set_entry_type, + .get_entry_attr = exfat_get_entry_attr, + .set_entry_attr = exfat_set_entry_attr, + .get_entry_flag = exfat_get_entry_flag, + .set_entry_flag = exfat_set_entry_flag, + .get_entry_clu0 = exfat_get_entry_clu0, + .set_entry_clu0 = exfat_set_entry_clu0, + .get_entry_size = exfat_get_entry_size, + .set_entry_size = exfat_set_entry_size, + .get_entry_time = exfat_get_entry_time, + .set_entry_time = exfat_set_entry_time, +}; + +s32 exfat_mount(struct super_block *sb, PBR_SECTOR_T *p_pbr) +{ + BPBEX_T *p_bpb = (BPBEX_T *) p_pbr->bpb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + + if (p_bpb->num_fats == 0) + return FFS_FORMATERR; + + p_fs->sectors_per_clu = 1 << p_bpb->sectors_per_clu_bits; + p_fs->sectors_per_clu_bits = p_bpb->sectors_per_clu_bits; + p_fs->cluster_size_bits = p_fs->sectors_per_clu_bits + p_bd->sector_size_bits; + p_fs->cluster_size = 1 << p_fs->cluster_size_bits; + + p_fs->num_FAT_sectors = GET32(p_bpb->fat_length); + + p_fs->FAT1_start_sector = p_fs->PBR_sector + GET32(p_bpb->fat_offset); + if (p_bpb->num_fats == 1) + p_fs->FAT2_start_sector = p_fs->FAT1_start_sector; + else + p_fs->FAT2_start_sector = p_fs->FAT1_start_sector + p_fs->num_FAT_sectors; + + p_fs->root_start_sector = p_fs->PBR_sector + GET32(p_bpb->clu_offset); + p_fs->data_start_sector = p_fs->root_start_sector; + + p_fs->num_sectors = GET64(p_bpb->vol_length); + p_fs->num_clusters = GET32(p_bpb->clu_count) + 2; + /* because the cluster index starts with 2 */ + + p_fs->vol_type = EXFAT; + p_fs->vol_id = GET32(p_bpb->vol_serial); + + p_fs->root_dir = GET32(p_bpb->root_cluster); + p_fs->dentries_in_root = 0; + p_fs->dentries_per_clu = 1 << (p_fs->cluster_size_bits - DENTRY_SIZE_BITS); + + p_fs->vol_flag = (u32) GET16(p_bpb->vol_flags); + p_fs->clu_srch_ptr = 2; + p_fs->used_clusters = (u32) ~0; + + p_fs->fs_func = &exfat_fs_func; + + return FFS_SUCCESS; +} /* end of exfat_mount */ + +s32 create_dir(struct inode *inode, CHAIN_T *p_dir, UNI_NAME_T *p_uniname, FILE_ID_T *fid) +{ + s32 ret, dentry, num_entries; + u64 size; + CHAIN_T clu; + DOS_NAME_T dos_name, dot_name; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + ret = get_num_entries_and_dos_name(sb, p_dir, p_uniname, &num_entries, &dos_name); + if (ret) + return ret; + + /* find_empty_entry must be called before alloc_cluster */ + dentry = find_empty_entry(inode, p_dir, num_entries); + if (dentry < 0) + return FFS_FULL; + + clu.dir = CLUSTER_32(~0); + clu.size = 0; + clu.flags = (p_fs->vol_type == EXFAT) ? 0x03 : 0x01; + + /* (1) allocate a cluster */ + ret = p_fs->fs_func->alloc_cluster(sb, 1, &clu); + if (ret < 0) + return FFS_MEDIAERR; + else if (ret == 0) + return FFS_FULL; + + ret = clear_cluster(sb, clu.dir); + if (ret != FFS_SUCCESS) + return ret; + + if (p_fs->vol_type == EXFAT) { + size = p_fs->cluster_size; + } else { + size = 0; + + /* initialize the . and .. entry + Information for . points to itself + Information for .. points to parent dir */ + + dot_name.name_case = 0x0; + memcpy(dot_name.name, DOS_CUR_DIR_NAME, DOS_NAME_LENGTH); + + ret = p_fs->fs_func->init_dir_entry(sb, &clu, 0, TYPE_DIR, clu.dir, 0); + if (ret != FFS_SUCCESS) + return ret; + + ret = p_fs->fs_func->init_ext_entry(sb, &clu, 0, 1, NULL, &dot_name); + if (ret != FFS_SUCCESS) + return ret; + + memcpy(dot_name.name, DOS_PAR_DIR_NAME, DOS_NAME_LENGTH); + + if (p_dir->dir == p_fs->root_dir) + ret = p_fs->fs_func->init_dir_entry(sb, &clu, 1, TYPE_DIR, CLUSTER_32(0), 0); + else + ret = p_fs->fs_func->init_dir_entry(sb, &clu, 1, TYPE_DIR, p_dir->dir, 0); + + if (ret != FFS_SUCCESS) + return ret; + + ret = p_fs->fs_func->init_ext_entry(sb, &clu, 1, 1, NULL, &dot_name); + if (ret != FFS_SUCCESS) + return ret; + } + + /* (2) update the directory entry */ + /* make sub-dir entry in parent directory */ + ret = p_fs->fs_func->init_dir_entry(sb, p_dir, dentry, TYPE_DIR, clu.dir, size); + if (ret != FFS_SUCCESS) + return ret; + + ret = p_fs->fs_func->init_ext_entry(sb, p_dir, dentry, num_entries, p_uniname, &dos_name); + if (ret != FFS_SUCCESS) + return ret; + + fid->dir.dir = p_dir->dir; + fid->dir.size = p_dir->size; + fid->dir.flags = p_dir->flags; + fid->entry = dentry; + + fid->attr = ATTR_SUBDIR; + fid->flags = (p_fs->vol_type == EXFAT) ? 0x03 : 0x01; + fid->size = size; + fid->start_clu = clu.dir; + + fid->type = TYPE_DIR; + fid->rwoffset = 0; + fid->hint_last_off = -1; + + return FFS_SUCCESS; +} /* end of create_dir */ + +s32 create_file(struct inode *inode, CHAIN_T *p_dir, UNI_NAME_T *p_uniname, u8 mode, FILE_ID_T *fid) +{ + s32 ret, dentry, num_entries; + DOS_NAME_T dos_name; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + ret = get_num_entries_and_dos_name(sb, p_dir, p_uniname, &num_entries, &dos_name); + if (ret) + return ret; + + /* find_empty_entry must be called before alloc_cluster() */ + dentry = find_empty_entry(inode, p_dir, num_entries); + if (dentry < 0) + return FFS_FULL; + + /* (1) update the directory entry */ + /* fill the dos name directory entry information of the created file. + the first cluster is not determined yet. (0) */ + ret = p_fs->fs_func->init_dir_entry(sb, p_dir, dentry, TYPE_FILE | mode, CLUSTER_32(0), 0); + if (ret != FFS_SUCCESS) + return ret; + + ret = p_fs->fs_func->init_ext_entry(sb, p_dir, dentry, num_entries, p_uniname, &dos_name); + if (ret != FFS_SUCCESS) + return ret; + + fid->dir.dir = p_dir->dir; + fid->dir.size = p_dir->size; + fid->dir.flags = p_dir->flags; + fid->entry = dentry; + + fid->attr = ATTR_ARCHIVE | mode; + fid->flags = (p_fs->vol_type == EXFAT) ? 0x03 : 0x01; + fid->size = 0; + fid->start_clu = CLUSTER_32(~0); + + fid->type = TYPE_FILE; + fid->rwoffset = 0; + fid->hint_last_off = -1; + + return FFS_SUCCESS; +} /* end of create_file */ + +void remove_file(struct inode *inode, CHAIN_T *p_dir, s32 entry) +{ + s32 num_entries; + sector_t sector; + DENTRY_T *ep; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + ep = get_entry_in_dir(sb, p_dir, entry, §or); + if (!ep) + return; + + buf_lock(sb, sector); + + /* buf_lock() before call count_ext_entries() */ + num_entries = p_fs->fs_func->count_ext_entries(sb, p_dir, entry, ep); + if (num_entries < 0) { + buf_unlock(sb, sector); + return; + } + num_entries++; + + buf_unlock(sb, sector); + + /* (1) update the directory entry */ + p_fs->fs_func->delete_dir_entry(sb, p_dir, entry, 0, num_entries); +} /* end of remove_file */ + +s32 rename_file(struct inode *inode, CHAIN_T *p_dir, s32 oldentry, UNI_NAME_T *p_uniname, FILE_ID_T *fid) +{ + s32 ret, newentry = -1, num_old_entries, num_new_entries; + sector_t sector_old, sector_new; + DOS_NAME_T dos_name; + DENTRY_T *epold, *epnew; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + epold = get_entry_in_dir(sb, p_dir, oldentry, §or_old); + if (!epold) + return FFS_MEDIAERR; + + buf_lock(sb, sector_old); + + /* buf_lock() before call count_ext_entries() */ + num_old_entries = p_fs->fs_func->count_ext_entries(sb, p_dir, oldentry, epold); + if (num_old_entries < 0) { + buf_unlock(sb, sector_old); + return FFS_MEDIAERR; + } + num_old_entries++; + + ret = get_num_entries_and_dos_name(sb, p_dir, p_uniname, &num_new_entries, &dos_name); + if (ret) { + buf_unlock(sb, sector_old); + return ret; + } + + if (num_old_entries < num_new_entries) { + newentry = find_empty_entry(inode, p_dir, num_new_entries); + if (newentry < 0) { + buf_unlock(sb, sector_old); + return FFS_FULL; + } + + epnew = get_entry_in_dir(sb, p_dir, newentry, §or_new); + if (!epnew) { + buf_unlock(sb, sector_old); + return FFS_MEDIAERR; + } + + memcpy((void *) epnew, (void *) epold, DENTRY_SIZE); + if (p_fs->fs_func->get_entry_type(epnew) == TYPE_FILE) { + p_fs->fs_func->set_entry_attr(epnew, p_fs->fs_func->get_entry_attr(epnew) | ATTR_ARCHIVE); + fid->attr |= ATTR_ARCHIVE; + } + buf_modify(sb, sector_new); + buf_unlock(sb, sector_old); + + if (p_fs->vol_type == EXFAT) { + epold = get_entry_in_dir(sb, p_dir, oldentry+1, §or_old); + buf_lock(sb, sector_old); + epnew = get_entry_in_dir(sb, p_dir, newentry+1, §or_new); + + if (!epold || !epnew) { + buf_unlock(sb, sector_old); + return FFS_MEDIAERR; + } + + memcpy((void *) epnew, (void *) epold, DENTRY_SIZE); + buf_modify(sb, sector_new); + buf_unlock(sb, sector_old); + } + + ret = p_fs->fs_func->init_ext_entry(sb, p_dir, newentry, num_new_entries, p_uniname, &dos_name); + if (ret != FFS_SUCCESS) + return ret; + + p_fs->fs_func->delete_dir_entry(sb, p_dir, oldentry, 0, num_old_entries); + fid->entry = newentry; + } else { + if (p_fs->fs_func->get_entry_type(epold) == TYPE_FILE) { + p_fs->fs_func->set_entry_attr(epold, p_fs->fs_func->get_entry_attr(epold) | ATTR_ARCHIVE); + fid->attr |= ATTR_ARCHIVE; + } + buf_modify(sb, sector_old); + buf_unlock(sb, sector_old); + + ret = p_fs->fs_func->init_ext_entry(sb, p_dir, oldentry, num_new_entries, p_uniname, &dos_name); + if (ret != FFS_SUCCESS) + return ret; + + p_fs->fs_func->delete_dir_entry(sb, p_dir, oldentry, num_new_entries, num_old_entries); + } + + return FFS_SUCCESS; +} /* end of rename_file */ + +s32 move_file(struct inode *inode, CHAIN_T *p_olddir, s32 oldentry, CHAIN_T *p_newdir, UNI_NAME_T *p_uniname, FILE_ID_T *fid) +{ + s32 ret, newentry, num_new_entries, num_old_entries; + sector_t sector_mov, sector_new; + CHAIN_T clu; + DOS_NAME_T dos_name; + DENTRY_T *epmov, *epnew; + struct super_block *sb = inode->i_sb; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + epmov = get_entry_in_dir(sb, p_olddir, oldentry, §or_mov); + if (!epmov) + return FFS_MEDIAERR; + + /* check if the source and target directory is the same */ + if (p_fs->fs_func->get_entry_type(epmov) == TYPE_DIR && + p_fs->fs_func->get_entry_clu0(epmov) == p_newdir->dir) + return FFS_INVALIDPATH; + + buf_lock(sb, sector_mov); + + /* buf_lock() before call count_ext_entries() */ + num_old_entries = p_fs->fs_func->count_ext_entries(sb, p_olddir, oldentry, epmov); + if (num_old_entries < 0) { + buf_unlock(sb, sector_mov); + return FFS_MEDIAERR; + } + num_old_entries++; + + ret = get_num_entries_and_dos_name(sb, p_newdir, p_uniname, &num_new_entries, &dos_name); + if (ret) { + buf_unlock(sb, sector_mov); + return ret; + } + + newentry = find_empty_entry(inode, p_newdir, num_new_entries); + if (newentry < 0) { + buf_unlock(sb, sector_mov); + return FFS_FULL; + } + + epnew = get_entry_in_dir(sb, p_newdir, newentry, §or_new); + if (!epnew) { + buf_unlock(sb, sector_mov); + return FFS_MEDIAERR; + } + + memcpy((void *) epnew, (void *) epmov, DENTRY_SIZE); + if (p_fs->fs_func->get_entry_type(epnew) == TYPE_FILE) { + p_fs->fs_func->set_entry_attr(epnew, p_fs->fs_func->get_entry_attr(epnew) | ATTR_ARCHIVE); + fid->attr |= ATTR_ARCHIVE; + } + buf_modify(sb, sector_new); + buf_unlock(sb, sector_mov); + + if (p_fs->vol_type == EXFAT) { + epmov = get_entry_in_dir(sb, p_olddir, oldentry+1, §or_mov); + buf_lock(sb, sector_mov); + epnew = get_entry_in_dir(sb, p_newdir, newentry+1, §or_new); + if (!epmov || !epnew) { + buf_unlock(sb, sector_mov); + return FFS_MEDIAERR; + } + + memcpy((void *) epnew, (void *) epmov, DENTRY_SIZE); + buf_modify(sb, sector_new); + buf_unlock(sb, sector_mov); + } else if (p_fs->fs_func->get_entry_type(epnew) == TYPE_DIR) { + /* change ".." pointer to new parent dir */ + clu.dir = p_fs->fs_func->get_entry_clu0(epnew); + clu.flags = 0x01; + + epnew = get_entry_in_dir(sb, &clu, 1, §or_new); + if (!epnew) + return FFS_MEDIAERR; + + if (p_newdir->dir == p_fs->root_dir) + p_fs->fs_func->set_entry_clu0(epnew, CLUSTER_32(0)); + else + p_fs->fs_func->set_entry_clu0(epnew, p_newdir->dir); + buf_modify(sb, sector_new); + } + + ret = p_fs->fs_func->init_ext_entry(sb, p_newdir, newentry, num_new_entries, p_uniname, &dos_name); + if (ret != FFS_SUCCESS) + return ret; + + p_fs->fs_func->delete_dir_entry(sb, p_olddir, oldentry, 0, num_old_entries); + + fid->dir.dir = p_newdir->dir; + fid->dir.size = p_newdir->size; + fid->dir.flags = p_newdir->flags; + + fid->entry = newentry; + + return FFS_SUCCESS; +} /* end of move_file */ + +/* + * Sector Read/Write Functions + */ + +s32 sector_read(struct super_block *sb, sector_t sec, struct buffer_head **bh, s32 read) +{ + s32 ret = FFS_MEDIAERR; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + if ((sec >= (p_fs->PBR_sector+p_fs->num_sectors)) && (p_fs->num_sectors > 0)) { + printk("[EXFAT] sector_read: out of range error! (sec = %llu)\n", (unsigned long long)sec); + fs_error(sb); + return ret; + } + + if (!p_fs->dev_ejected) { + ret = bdev_read(sb, sec, bh, 1, read); + if (ret != FFS_SUCCESS) + p_fs->dev_ejected = TRUE; + } + + return ret; +} /* end of sector_read */ + +s32 sector_write(struct super_block *sb, sector_t sec, struct buffer_head *bh, s32 sync) +{ + s32 ret = FFS_MEDIAERR; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + if (sec >= (p_fs->PBR_sector+p_fs->num_sectors) && (p_fs->num_sectors > 0)) { + printk("[EXFAT] sector_write: out of range error! (sec = %llu)\n", (unsigned long long)sec); + fs_error(sb); + return ret; + } + + if (bh == NULL) { + printk("[EXFAT] sector_write: bh is NULL!\n"); + fs_error(sb); + return ret; + } + + if (!p_fs->dev_ejected) { + ret = bdev_write(sb, sec, bh, 1, sync); + if (ret != FFS_SUCCESS) + p_fs->dev_ejected = TRUE; + } + + return ret; +} /* end of sector_write */ + +s32 multi_sector_read(struct super_block *sb, sector_t sec, struct buffer_head **bh, s32 num_secs, s32 read) +{ + s32 ret = FFS_MEDIAERR; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + if (((sec+num_secs) > (p_fs->PBR_sector+p_fs->num_sectors)) && (p_fs->num_sectors > 0)) { + printk("[EXFAT] multi_sector_read: out of range error! (sec = %llu, num_secs = %d)\n", + (unsigned long long)sec, num_secs); + fs_error(sb); + return ret; + } + + if (!p_fs->dev_ejected) { + ret = bdev_read(sb, sec, bh, num_secs, read); + if (ret != FFS_SUCCESS) + p_fs->dev_ejected = TRUE; + } + + return ret; +} /* end of multi_sector_read */ + +s32 multi_sector_write(struct super_block *sb, sector_t sec, struct buffer_head *bh, s32 num_secs, s32 sync) +{ + s32 ret = FFS_MEDIAERR; + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + if ((sec+num_secs) > (p_fs->PBR_sector+p_fs->num_sectors) && (p_fs->num_sectors > 0)) { + printk("[EXFAT] multi_sector_write: out of range error! (sec = %llu, num_secs = %d)\n", + (unsigned long long)sec, num_secs); + fs_error(sb); + return ret; + } + if (bh == NULL) { + printk("[EXFAT] multi_sector_write: bh is NULL!\n"); + fs_error(sb); + return ret; + } + + if (!p_fs->dev_ejected) { + ret = bdev_write(sb, sec, bh, num_secs, sync); + if (ret != FFS_SUCCESS) + p_fs->dev_ejected = TRUE; + } + + return ret; +} /* end of multi_sector_write */ diff --git a/fs/exfat/exfat_core.h b/fs/exfat/exfat_core.h new file mode 100644 index 00000000000..52d05c7007d --- /dev/null +++ b/fs/exfat/exfat_core.h @@ -0,0 +1,671 @@ +/* + * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/************************************************************************/ +/* */ +/* PROJECT : exFAT & FAT12/16/32 File System */ +/* FILE : exfat_core.h */ +/* PURPOSE : Header File for exFAT File Manager */ +/* */ +/*----------------------------------------------------------------------*/ +/* NOTES */ +/* */ +/*----------------------------------------------------------------------*/ +/* REVISION HISTORY (Ver 0.9) */ +/* */ +/* - 2010.11.15 [Joosun Hahn] : first writing */ +/* */ +/************************************************************************/ + +#ifndef _EXFAT_H +#define _EXFAT_H + +#include "exfat_config.h" +#include "exfat_data.h" +#include "exfat_oal.h" + +#include "exfat_blkdev.h" +#include "exfat_cache.h" +#include "exfat_nls.h" +#include "exfat_api.h" +#include "exfat_cache.h" + +#ifdef CONFIG_EXFAT_KERNEL_DEBUG + /* For Debugging Purpose */ + /* IOCTL code 'f' used by + * - file systems typically #0~0x1F + * - embedded terminal devices #128~ + * - exts for debugging purpose #99 + * number 100 and 101 is availble now but has possible conflicts + */ +#define EXFAT_IOC_GET_DEBUGFLAGS _IOR('f', 100, long) +#define EXFAT_IOC_SET_DEBUGFLAGS _IOW('f', 101, long) + +#define EXFAT_DEBUGFLAGS_INVALID_UMOUNT 0x01 +#define EXFAT_DEBUGFLAGS_ERROR_RW 0x02 +#endif /* CONFIG_EXFAT_KERNEL_DEBUG */ + + /*----------------------------------------------------------------------*/ + /* Constant & Macro Definitions */ + /*----------------------------------------------------------------------*/ + +#define DENTRY_SIZE 32 /* dir entry size */ +#define DENTRY_SIZE_BITS 5 + +/* PBR entries */ +#define PBR_SIGNATURE 0xAA55 +#define EXT_SIGNATURE 0xAA550000 +#define VOL_LABEL "NO NAME " /* size should be 11 */ +#define OEM_NAME "MSWIN4.1" /* size should be 8 */ +#define STR_FAT12 "FAT12 " /* size should be 8 */ +#define STR_FAT16 "FAT16 " /* size should be 8 */ +#define STR_FAT32 "FAT32 " /* size should be 8 */ +#define STR_EXFAT "EXFAT " /* size should be 8 */ +#define VOL_CLEAN 0x0000 +#define VOL_DIRTY 0x0002 + +/* max number of clusters */ +#define FAT12_THRESHOLD 4087 /* 2^12 - 1 + 2 (clu 0 & 1) */ +#define FAT16_THRESHOLD 65527 /* 2^16 - 1 + 2 */ +#define FAT32_THRESHOLD 268435457 /* 2^28 - 1 + 2 */ +#define EXFAT_THRESHOLD 268435457 /* 2^28 - 1 + 2 */ + +/* file types */ +#define TYPE_UNUSED 0x0000 +#define TYPE_DELETED 0x0001 +#define TYPE_INVALID 0x0002 +#define TYPE_CRITICAL_PRI 0x0100 +#define TYPE_BITMAP 0x0101 +#define TYPE_UPCASE 0x0102 +#define TYPE_VOLUME 0x0103 +#define TYPE_DIR 0x0104 +#define TYPE_FILE 0x011F +#define TYPE_SYMLINK 0x015F +#define TYPE_CRITICAL_SEC 0x0200 +#define TYPE_STREAM 0x0201 +#define TYPE_EXTEND 0x0202 +#define TYPE_ACL 0x0203 +#define TYPE_BENIGN_PRI 0x0400 +#define TYPE_GUID 0x0401 +#define TYPE_PADDING 0x0402 +#define TYPE_ACLTAB 0x0403 +#define TYPE_BENIGN_SEC 0x0800 +#define TYPE_ALL 0x0FFF + +/* time modes */ +#define TM_CREATE 0 +#define TM_MODIFY 1 +#define TM_ACCESS 2 + +/* checksum types */ +#define CS_DIR_ENTRY 0 +#define CS_PBR_SECTOR 1 +#define CS_DEFAULT 2 + +#define CLUSTER_16(x) ((u16)(x)) +#define CLUSTER_32(x) ((u32)(x)) + +#define FALSE 0 +#define TRUE 1 + +#define MIN(a, b) (((a) < (b)) ? (a) : (b)) +#define MAX(a, b) (((a) > (b)) ? (a) : (b)) + +#define START_SECTOR(x) \ + ((((sector_t)((x) - 2)) << p_fs->sectors_per_clu_bits) + p_fs->data_start_sector) + +#define IS_LAST_SECTOR_IN_CLUSTER(sec) \ + ((((sec) - p_fs->data_start_sector + 1) & ((1 << p_fs->sectors_per_clu_bits) - 1)) == 0) + +#define GET_CLUSTER_FROM_SECTOR(sec) \ + ((u32)((((sec) - p_fs->data_start_sector) >> p_fs->sectors_per_clu_bits) + 2)) + +#define GET16(p_src) \ + (((u16)(p_src)[0]) | (((u16)(p_src)[1]) << 8)) +#define GET32(p_src) \ + (((u32)(p_src)[0]) | (((u32)(p_src)[1]) << 8) | \ + (((u32)(p_src)[2]) << 16) | (((u32)(p_src)[3]) << 24)) +#define GET64(p_src) \ + (((u64)(p_src)[0]) | (((u64)(p_src)[1]) << 8) | \ + (((u64)(p_src)[2]) << 16) | (((u64)(p_src)[3]) << 24) | \ + (((u64)(p_src)[4]) << 32) | (((u64)(p_src)[5]) << 40) | \ + (((u64)(p_src)[6]) << 48) | (((u64)(p_src)[7]) << 56)) + + +#define SET16(p_dst, src) \ + do { \ + (p_dst)[0] = (u8)(src); \ + (p_dst)[1] = (u8)(((u16)(src)) >> 8); \ + } while (0) +#define SET32(p_dst, src) \ + do { \ + (p_dst)[0] = (u8)(src); \ + (p_dst)[1] = (u8)(((u32)(src)) >> 8); \ + (p_dst)[2] = (u8)(((u32)(src)) >> 16); \ + (p_dst)[3] = (u8)(((u32)(src)) >> 24); \ + } while (0) +#define SET64(p_dst, src) \ + do { \ + (p_dst)[0] = (u8)(src); \ + (p_dst)[1] = (u8)(((u64)(src)) >> 8); \ + (p_dst)[2] = (u8)(((u64)(src)) >> 16); \ + (p_dst)[3] = (u8)(((u64)(src)) >> 24); \ + (p_dst)[4] = (u8)(((u64)(src)) >> 32); \ + (p_dst)[5] = (u8)(((u64)(src)) >> 40); \ + (p_dst)[6] = (u8)(((u64)(src)) >> 48); \ + (p_dst)[7] = (u8)(((u64)(src)) >> 56); \ + } while (0) + +#ifdef __LITTLE_ENDIAN +#define GET16_A(p_src) (*((u16 *)(p_src))) +#define GET32_A(p_src) (*((u32 *)(p_src))) +#define GET64_A(p_src) (*((u64 *)(p_src))) +#define SET16_A(p_dst, src) (*((u16 *)(p_dst)) = (u16)(src)) +#define SET32_A(p_dst, src) (*((u32 *)(p_dst)) = (u32)(src)) +#define SET64_A(p_dst, src) (*((u64 *)(p_dst)) = (u64)(src)) +#else /* BIG_ENDIAN */ +#define GET16_A(p_src) GET16(p_src) +#define GET32_A(p_src) GET32(p_src) +#define GET64_A(p_src) GET64(p_src) +#define SET16_A(p_dst, src) SET16(p_dst, src) +#define SET32_A(p_dst, src) SET32(p_dst, src) +#define SET64_A(p_dst, src) SET64(p_dst, src) +#endif + +/* Upcase tabel mecro */ +#define HIGH_INDEX_BIT (8) +#define HIGH_INDEX_MASK (0xFF00) +#define LOW_INDEX_BIT (16-HIGH_INDEX_BIT) +#define UTBL_ROW_COUNT (1<> LOW_INDEX_BIT; +} +static inline u16 get_row_index(u16 i) +{ + return i & ~HIGH_INDEX_MASK; +} +/*----------------------------------------------------------------------*/ +/* Type Definitions */ +/*----------------------------------------------------------------------*/ + +/* MS_DOS FAT partition boot record (512 bytes) */ +typedef struct { + u8 jmp_boot[3]; + u8 oem_name[8]; + u8 bpb[109]; + u8 boot_code[390]; + u8 signature[2]; +} PBR_SECTOR_T; + +/* MS-DOS FAT12/16 BIOS parameter block (51 bytes) */ +typedef struct { + u8 sector_size[2]; + u8 sectors_per_clu; + u8 num_reserved[2]; + u8 num_fats; + u8 num_root_entries[2]; + u8 num_sectors[2]; + u8 media_type; + u8 num_fat_sectors[2]; + u8 sectors_in_track[2]; + u8 num_heads[2]; + u8 num_hid_sectors[4]; + u8 num_huge_sectors[4]; + + u8 phy_drv_no; + u8 reserved; + u8 ext_signature; + u8 vol_serial[4]; + u8 vol_label[11]; + u8 vol_type[8]; +} BPB16_T; + +/* MS-DOS FAT32 BIOS parameter block (79 bytes) */ +typedef struct { + u8 sector_size[2]; + u8 sectors_per_clu; + u8 num_reserved[2]; + u8 num_fats; + u8 num_root_entries[2]; + u8 num_sectors[2]; + u8 media_type; + u8 num_fat_sectors[2]; + u8 sectors_in_track[2]; + u8 num_heads[2]; + u8 num_hid_sectors[4]; + u8 num_huge_sectors[4]; + u8 num_fat32_sectors[4]; + u8 ext_flags[2]; + u8 fs_version[2]; + u8 root_cluster[4]; + u8 fsinfo_sector[2]; + u8 backup_sector[2]; + u8 reserved[12]; + + u8 phy_drv_no; + u8 ext_reserved; + u8 ext_signature; + u8 vol_serial[4]; + u8 vol_label[11]; + u8 vol_type[8]; +} BPB32_T; + +/* MS-DOS EXFAT BIOS parameter block (109 bytes) */ +typedef struct { + u8 reserved1[53]; + u8 vol_offset[8]; + u8 vol_length[8]; + u8 fat_offset[4]; + u8 fat_length[4]; + u8 clu_offset[4]; + u8 clu_count[4]; + u8 root_cluster[4]; + u8 vol_serial[4]; + u8 fs_version[2]; + u8 vol_flags[2]; + u8 sector_size_bits; + u8 sectors_per_clu_bits; + u8 num_fats; + u8 phy_drv_no; + u8 perc_in_use; + u8 reserved2[7]; +} BPBEX_T; + +/* MS-DOS FAT file system information sector (512 bytes) */ +typedef struct { + u8 signature1[4]; + u8 reserved1[480]; + u8 signature2[4]; + u8 free_cluster[4]; + u8 next_cluster[4]; + u8 reserved2[14]; + u8 signature3[2]; +} FSI_SECTOR_T; + +/* MS-DOS FAT directory entry (32 bytes) */ +typedef struct { + u8 dummy[32]; +} DENTRY_T; + +typedef struct { + u8 name[DOS_NAME_LENGTH]; + u8 attr; + u8 lcase; + u8 create_time_ms; + u8 create_time[2]; + u8 create_date[2]; + u8 access_date[2]; + u8 start_clu_hi[2]; + u8 modify_time[2]; + u8 modify_date[2]; + u8 start_clu_lo[2]; + u8 size[4]; +} DOS_DENTRY_T; + +/* MS-DOS FAT extended directory entry (32 bytes) */ +typedef struct { + u8 order; + u8 unicode_0_4[10]; + u8 attr; + u8 sysid; + u8 checksum; + u8 unicode_5_10[12]; + u8 start_clu[2]; + u8 unicode_11_12[4]; +} EXT_DENTRY_T; + +/* MS-DOS EXFAT file directory entry (32 bytes) */ +typedef struct { + u8 type; + u8 num_ext; + u8 checksum[2]; + u8 attr[2]; + u8 reserved1[2]; + u8 create_time[2]; + u8 create_date[2]; + u8 modify_time[2]; + u8 modify_date[2]; + u8 access_time[2]; + u8 access_date[2]; + u8 create_time_ms; + u8 modify_time_ms; + u8 access_time_ms; + u8 reserved2[9]; +} FILE_DENTRY_T; + +/* MS-DOS EXFAT stream extension directory entry (32 bytes) */ +typedef struct { + u8 type; + u8 flags; + u8 reserved1; + u8 name_len; + u8 name_hash[2]; + u8 reserved2[2]; + u8 valid_size[8]; + u8 reserved3[4]; + u8 start_clu[4]; + u8 size[8]; +} STRM_DENTRY_T; + +/* MS-DOS EXFAT file name directory entry (32 bytes) */ +typedef struct { + u8 type; + u8 flags; + u8 unicode_0_14[30]; +} NAME_DENTRY_T; + +/* MS-DOS EXFAT allocation bitmap directory entry (32 bytes) */ +typedef struct { + u8 type; + u8 flags; + u8 reserved[18]; + u8 start_clu[4]; + u8 size[8]; +} BMAP_DENTRY_T; + +/* MS-DOS EXFAT up-case table directory entry (32 bytes) */ +typedef struct { + u8 type; + u8 reserved1[3]; + u8 checksum[4]; + u8 reserved2[12]; + u8 start_clu[4]; + u8 size[8]; +} CASE_DENTRY_T; + +/* MS-DOS EXFAT volume label directory entry (32 bytes) */ +typedef struct { + u8 type; + u8 label_len; + u8 unicode_0_10[22]; + u8 reserved[8]; +} VOLM_DENTRY_T; + +/* unused entry hint information */ +typedef struct { + u32 dir; + s32 entry; + CHAIN_T clu; +} UENTRY_T; + +typedef struct { + s32 (*alloc_cluster)(struct super_block *sb, s32 num_alloc, CHAIN_T *p_chain); + void (*free_cluster)(struct super_block *sb, CHAIN_T *p_chain, s32 do_relse); + s32 (*count_used_clusters)(struct super_block *sb); + + s32 (*init_dir_entry)(struct super_block *sb, CHAIN_T *p_dir, s32 entry, u32 type, + u32 start_clu, u64 size); + s32 (*init_ext_entry)(struct super_block *sb, CHAIN_T *p_dir, s32 entry, s32 num_entries, + UNI_NAME_T *p_uniname, DOS_NAME_T *p_dosname); + s32 (*find_dir_entry)(struct super_block *sb, CHAIN_T *p_dir, UNI_NAME_T *p_uniname, s32 num_entries, DOS_NAME_T *p_dosname, u32 type); + void (*delete_dir_entry)(struct super_block *sb, CHAIN_T *p_dir, s32 entry, s32 offset, s32 num_entries); + void (*get_uni_name_from_ext_entry)(struct super_block *sb, CHAIN_T *p_dir, s32 entry, u16 *uniname); + s32 (*count_ext_entries)(struct super_block *sb, CHAIN_T *p_dir, s32 entry, DENTRY_T *p_entry); + s32 (*calc_num_entries)(UNI_NAME_T *p_uniname); + + u32 (*get_entry_type)(DENTRY_T *p_entry); + void (*set_entry_type)(DENTRY_T *p_entry, u32 type); + u32 (*get_entry_attr)(DENTRY_T *p_entry); + void (*set_entry_attr)(DENTRY_T *p_entry, u32 attr); + u8 (*get_entry_flag)(DENTRY_T *p_entry); + void (*set_entry_flag)(DENTRY_T *p_entry, u8 flag); + u32 (*get_entry_clu0)(DENTRY_T *p_entry); + void (*set_entry_clu0)(DENTRY_T *p_entry, u32 clu0); + u64 (*get_entry_size)(DENTRY_T *p_entry); + void (*set_entry_size)(DENTRY_T *p_entry, u64 size); + void (*get_entry_time)(DENTRY_T *p_entry, TIMESTAMP_T *tp, u8 mode); + void (*set_entry_time)(DENTRY_T *p_entry, TIMESTAMP_T *tp, u8 mode); +} FS_FUNC_T; + +typedef struct __FS_INFO_T { + u32 drv; /* drive ID */ + u32 vol_type; /* volume FAT type */ + u32 vol_id; /* volume serial number */ + + u64 num_sectors; /* num of sectors in volume */ + u32 num_clusters; /* num of clusters in volume */ + u32 cluster_size; /* cluster size in bytes */ + u32 cluster_size_bits; + u32 sectors_per_clu; /* cluster size in sectors */ + u32 sectors_per_clu_bits; + + u32 PBR_sector; /* PBR sector */ + u32 FAT1_start_sector; /* FAT1 start sector */ + u32 FAT2_start_sector; /* FAT2 start sector */ + u32 root_start_sector; /* root dir start sector */ + u32 data_start_sector; /* data area start sector */ + u32 num_FAT_sectors; /* num of FAT sectors */ + + u32 root_dir; /* root dir cluster */ + u32 dentries_in_root; /* num of dentries in root dir */ + u32 dentries_per_clu; /* num of dentries per cluster */ + + u32 vol_flag; /* volume dirty flag */ + struct buffer_head *pbr_bh; /* PBR sector */ + + u32 map_clu; /* allocation bitmap start cluster */ + u32 map_sectors; /* num of allocation bitmap sectors */ + struct buffer_head **vol_amap; /* allocation bitmap */ + + u16 **vol_utbl; /* upcase table */ + + u32 clu_srch_ptr; /* cluster search pointer */ + u32 used_clusters; /* number of used clusters */ + UENTRY_T hint_uentry; /* unused entry hint information */ + + u32 dev_ejected; /* block device operation error flag */ + + FS_FUNC_T *fs_func; + struct semaphore v_sem; + + /* FAT cache */ + BUF_CACHE_T FAT_cache_array[FAT_CACHE_SIZE]; + BUF_CACHE_T FAT_cache_lru_list; + BUF_CACHE_T FAT_cache_hash_list[FAT_CACHE_HASH_SIZE]; + + /* buf cache */ + BUF_CACHE_T buf_cache_array[BUF_CACHE_SIZE]; + BUF_CACHE_T buf_cache_lru_list; + BUF_CACHE_T buf_cache_hash_list[BUF_CACHE_HASH_SIZE]; +} FS_INFO_T; + +#define ES_2_ENTRIES 2 +#define ES_3_ENTRIES 3 +#define ES_ALL_ENTRIES 0 + +typedef struct { + sector_t sector; /* sector number that contains file_entry */ + s32 offset; /* byte offset in the sector */ + s32 alloc_flag; /* flag in stream entry. 01 for cluster chain, 03 for contig. clusteres. */ + u32 num_entries; + + /* __buf should be the last member */ + void *__buf; +} ENTRY_SET_CACHE_T; + +/*----------------------------------------------------------------------*/ +/* External Function Declarations */ +/*----------------------------------------------------------------------*/ + +/* file system initialization & shutdown functions */ +s32 ffsInit(void); +s32 ffsShutdown(void); + +/* volume management functions */ +s32 ffsMountVol(struct super_block *sb); +s32 ffsUmountVol(struct super_block *sb); +s32 ffsCheckVol(struct super_block *sb); +s32 ffsGetVolInfo(struct super_block *sb, VOL_INFO_T *info); +s32 ffsSyncVol(struct super_block *sb, s32 do_sync); + +/* file management functions */ +s32 ffsLookupFile(struct inode *inode, char *path, FILE_ID_T *fid); +s32 ffsCreateFile(struct inode *inode, char *path, u8 mode, FILE_ID_T *fid); +s32 ffsReadFile(struct inode *inode, FILE_ID_T *fid, void *buffer, u64 count, u64 *rcount); +s32 ffsWriteFile(struct inode *inode, FILE_ID_T *fid, void *buffer, u64 count, u64 *wcount); +s32 ffsTruncateFile(struct inode *inode, u64 old_size, u64 new_size); +s32 ffsMoveFile(struct inode *old_parent_inode, FILE_ID_T *fid, struct inode *new_parent_inode, struct dentry *new_dentry); +s32 ffsRemoveFile(struct inode *inode, FILE_ID_T *fid); +s32 ffsSetAttr(struct inode *inode, u32 attr); +s32 ffsGetStat(struct inode *inode, DIR_ENTRY_T *info); +s32 ffsSetStat(struct inode *inode, DIR_ENTRY_T *info); +s32 ffsMapCluster(struct inode *inode, s32 clu_offset, u32 *clu); + +/* directory management functions */ +s32 ffsCreateDir(struct inode *inode, char *path, FILE_ID_T *fid); +s32 ffsReadDir(struct inode *inode, DIR_ENTRY_T *dir_ent); +s32 ffsRemoveDir(struct inode *inode, FILE_ID_T *fid); + +/*----------------------------------------------------------------------*/ +/* External Function Declarations (NOT TO UPPER LAYER) */ +/*----------------------------------------------------------------------*/ + +/* fs management functions */ +s32 fs_init(void); +s32 fs_shutdown(void); +void fs_set_vol_flags(struct super_block *sb, u32 new_flag); +void fs_sync(struct super_block *sb, s32 do_sync); +void fs_error(struct super_block *sb); + +/* cluster management functions */ +s32 clear_cluster(struct super_block *sb, u32 clu); +s32 fat_alloc_cluster(struct super_block *sb, s32 num_alloc, CHAIN_T *p_chain); +s32 exfat_alloc_cluster(struct super_block *sb, s32 num_alloc, CHAIN_T *p_chain); +void fat_free_cluster(struct super_block *sb, CHAIN_T *p_chain, s32 do_relse); +void exfat_free_cluster(struct super_block *sb, CHAIN_T *p_chain, s32 do_relse); +u32 find_last_cluster(struct super_block *sb, CHAIN_T *p_chain); +s32 count_num_clusters(struct super_block *sb, CHAIN_T *dir); +s32 fat_count_used_clusters(struct super_block *sb); +s32 exfat_count_used_clusters(struct super_block *sb); +void exfat_chain_cont_cluster(struct super_block *sb, u32 chain, s32 len); + +/* allocation bitmap management functions */ +s32 load_alloc_bitmap(struct super_block *sb); +void free_alloc_bitmap(struct super_block *sb); +s32 set_alloc_bitmap(struct super_block *sb, u32 clu); +s32 clr_alloc_bitmap(struct super_block *sb, u32 clu); +u32 test_alloc_bitmap(struct super_block *sb, u32 clu); +void sync_alloc_bitmap(struct super_block *sb); + +/* upcase table management functions */ +s32 load_upcase_table(struct super_block *sb); +void free_upcase_table(struct super_block *sb); + +/* dir entry management functions */ +u32 fat_get_entry_type(DENTRY_T *p_entry); +u32 exfat_get_entry_type(DENTRY_T *p_entry); +void fat_set_entry_type(DENTRY_T *p_entry, u32 type); +void exfat_set_entry_type(DENTRY_T *p_entry, u32 type); +u32 fat_get_entry_attr(DENTRY_T *p_entry); +u32 exfat_get_entry_attr(DENTRY_T *p_entry); +void fat_set_entry_attr(DENTRY_T *p_entry, u32 attr); +void exfat_set_entry_attr(DENTRY_T *p_entry, u32 attr); +u8 fat_get_entry_flag(DENTRY_T *p_entry); +u8 exfat_get_entry_flag(DENTRY_T *p_entry); +void fat_set_entry_flag(DENTRY_T *p_entry, u8 flag); +void exfat_set_entry_flag(DENTRY_T *p_entry, u8 flag); +u32 fat_get_entry_clu0(DENTRY_T *p_entry); +u32 exfat_get_entry_clu0(DENTRY_T *p_entry); +void fat_set_entry_clu0(DENTRY_T *p_entry, u32 start_clu); +void exfat_set_entry_clu0(DENTRY_T *p_entry, u32 start_clu); +u64 fat_get_entry_size(DENTRY_T *p_entry); +u64 exfat_get_entry_size(DENTRY_T *p_entry); +void fat_set_entry_size(DENTRY_T *p_entry, u64 size); +void exfat_set_entry_size(DENTRY_T *p_entry, u64 size); +void fat_get_entry_time(DENTRY_T *p_entry, TIMESTAMP_T *tp, u8 mode); +void exfat_get_entry_time(DENTRY_T *p_entry, TIMESTAMP_T *tp, u8 mode); +void fat_set_entry_time(DENTRY_T *p_entry, TIMESTAMP_T *tp, u8 mode); +void exfat_set_entry_time(DENTRY_T *p_entry, TIMESTAMP_T *tp, u8 mode); +s32 fat_init_dir_entry(struct super_block *sb, CHAIN_T *p_dir, s32 entry, u32 type, u32 start_clu, u64 size); +s32 exfat_init_dir_entry(struct super_block *sb, CHAIN_T *p_dir, s32 entry, u32 type, u32 start_clu, u64 size); +s32 fat_init_ext_dir_entry(struct super_block *sb, CHAIN_T *p_dir, s32 entry, s32 num_entries, UNI_NAME_T *p_uniname, DOS_NAME_T *p_dosname); +s32 exfat_init_ext_dir_entry(struct super_block *sb, CHAIN_T *p_dir, s32 entry, s32 num_entries, UNI_NAME_T *p_uniname, DOS_NAME_T *p_dosname); +void init_dos_entry(DOS_DENTRY_T *ep, u32 type, u32 start_clu); +void init_ext_entry(EXT_DENTRY_T *ep, s32 order, u8 chksum, u16 *uniname); +void init_file_entry(FILE_DENTRY_T *ep, u32 type); +void init_strm_entry(STRM_DENTRY_T *ep, u8 flags, u32 start_clu, u64 size); +void init_name_entry(NAME_DENTRY_T *ep, u16 *uniname); +void fat_delete_dir_entry(struct super_block *sb, CHAIN_T *p_dir, s32 entry, s32 order, s32 num_entries); +void exfat_delete_dir_entry(struct super_block *sb, CHAIN_T *p_dir, s32 entry, s32 order, s32 num_entries); + +s32 find_location(struct super_block *sb, CHAIN_T *p_dir, s32 entry, sector_t *sector, s32 *offset); +DENTRY_T *get_entry_with_sector(struct super_block *sb, sector_t sector, s32 offset); +DENTRY_T *get_entry_in_dir(struct super_block *sb, CHAIN_T *p_dir, s32 entry, sector_t *sector); +ENTRY_SET_CACHE_T *get_entry_set_in_dir(struct super_block *sb, CHAIN_T *p_dir, s32 entry, u32 type, DENTRY_T **file_ep); +void release_entry_set(ENTRY_SET_CACHE_T *es); +s32 write_whole_entry_set(struct super_block *sb, ENTRY_SET_CACHE_T *es); +s32 write_partial_entries_in_entry_set(struct super_block *sb, ENTRY_SET_CACHE_T *es, DENTRY_T *ep, u32 count); +s32 search_deleted_or_unused_entry(struct super_block *sb, CHAIN_T *p_dir, s32 num_entries); +s32 find_empty_entry(struct inode *inode, CHAIN_T *p_dir, s32 num_entries); +s32 fat_find_dir_entry(struct super_block *sb, CHAIN_T *p_dir, UNI_NAME_T *p_uniname, s32 num_entries, DOS_NAME_T *p_dosname, u32 type); +s32 exfat_find_dir_entry(struct super_block *sb, CHAIN_T *p_dir, UNI_NAME_T *p_uniname, s32 num_entries, DOS_NAME_T *p_dosname, u32 type); +s32 fat_count_ext_entries(struct super_block *sb, CHAIN_T *p_dir, s32 entry, DENTRY_T *p_entry); +s32 exfat_count_ext_entries(struct super_block *sb, CHAIN_T *p_dir, s32 entry, DENTRY_T *p_entry); +s32 count_dos_name_entries(struct super_block *sb, CHAIN_T *p_dir, u32 type); +void update_dir_checksum(struct super_block *sb, CHAIN_T *p_dir, s32 entry); +void update_dir_checksum_with_entry_set(struct super_block *sb, ENTRY_SET_CACHE_T *es); +bool is_dir_empty(struct super_block *sb, CHAIN_T *p_dir); + +/* name conversion functions */ +s32 get_num_entries_and_dos_name(struct super_block *sb, CHAIN_T *p_dir, UNI_NAME_T *p_uniname, s32 *entries, DOS_NAME_T *p_dosname); +void get_uni_name_from_dos_entry(struct super_block *sb, DOS_DENTRY_T *ep, UNI_NAME_T *p_uniname, u8 mode); +void fat_get_uni_name_from_ext_entry(struct super_block *sb, CHAIN_T *p_dir, s32 entry, u16 *uniname); +void exfat_get_uni_name_from_ext_entry(struct super_block *sb, CHAIN_T *p_dir, s32 entry, u16 *uniname); +s32 extract_uni_name_from_ext_entry(EXT_DENTRY_T *ep, u16 *uniname, s32 order); +s32 extract_uni_name_from_name_entry(NAME_DENTRY_T *ep, u16 *uniname, s32 order); +s32 fat_generate_dos_name(struct super_block *sb, CHAIN_T *p_dir, DOS_NAME_T *p_dosname); +void fat_attach_count_to_dos_name(u8 *dosname, s32 count); +s32 fat_calc_num_entries(UNI_NAME_T *p_uniname); +s32 exfat_calc_num_entries(UNI_NAME_T *p_uniname); +u8 calc_checksum_1byte(void *data, s32 len, u8 chksum); +u16 calc_checksum_2byte(void *data, s32 len, u16 chksum, s32 type); +u32 calc_checksum_4byte(void *data, s32 len, u32 chksum, s32 type); + +/* name resolution functions */ +s32 resolve_path(struct inode *inode, char *path, CHAIN_T *p_dir, UNI_NAME_T *p_uniname); +s32 resolve_name(u8 *name, u8 **arg); + +/* file operation functions */ +s32 fat16_mount(struct super_block *sb, PBR_SECTOR_T *p_pbr); +s32 fat32_mount(struct super_block *sb, PBR_SECTOR_T *p_pbr); +s32 exfat_mount(struct super_block *sb, PBR_SECTOR_T *p_pbr); +s32 create_dir(struct inode *inode, CHAIN_T *p_dir, UNI_NAME_T *p_uniname, FILE_ID_T *fid); +s32 create_file(struct inode *inode, CHAIN_T *p_dir, UNI_NAME_T *p_uniname, u8 mode, FILE_ID_T *fid); +void remove_file(struct inode *inode, CHAIN_T *p_dir, s32 entry); +s32 rename_file(struct inode *inode, CHAIN_T *p_dir, s32 old_entry, UNI_NAME_T *p_uniname, FILE_ID_T *fid); +s32 move_file(struct inode *inode, CHAIN_T *p_olddir, s32 oldentry, CHAIN_T *p_newdir, UNI_NAME_T *p_uniname, FILE_ID_T *fid); + +/* sector read/write functions */ +s32 sector_read(struct super_block *sb, sector_t sec, struct buffer_head **bh, s32 read); +s32 sector_write(struct super_block *sb, sector_t sec, struct buffer_head *bh, s32 sync); +s32 multi_sector_read(struct super_block *sb, sector_t sec, struct buffer_head **bh, s32 num_secs, s32 read); +s32 multi_sector_write(struct super_block *sb, sector_t sec, struct buffer_head *bh, s32 num_secs, s32 sync); + +#endif /* _EXFAT_H */ diff --git a/fs/exfat/exfat_data.c b/fs/exfat/exfat_data.c new file mode 100644 index 00000000000..65da07aff54 --- /dev/null +++ b/fs/exfat/exfat_data.c @@ -0,0 +1,77 @@ +/* + * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/************************************************************************/ +/* */ +/* PROJECT : exFAT & FAT12/16/32 File System */ +/* FILE : exfat_data.c */ +/* PURPOSE : exFAT Configuable Data Definitions */ +/* */ +/*----------------------------------------------------------------------*/ +/* NOTES */ +/* */ +/*----------------------------------------------------------------------*/ +/* REVISION HISTORY (Ver 0.9) */ +/* */ +/* - 2010.11.15 [Joosun Hahn] : first writing */ +/* */ +/************************************************************************/ + +#include "exfat_config.h" +#include "exfat_data.h" +#include "exfat_oal.h" + +#include "exfat_blkdev.h" +#include "exfat_cache.h" +#include "exfat_nls.h" +#include "exfat_super.h" +#include "exfat_core.h" + +/*======================================================================*/ +/* */ +/* GLOBAL VARIABLE DEFINITIONS */ +/* */ +/*======================================================================*/ + +/*----------------------------------------------------------------------*/ +/* File Manager */ +/*----------------------------------------------------------------------*/ + +/*----------------------------------------------------------------------*/ +/* Buffer Manager */ +/*----------------------------------------------------------------------*/ + +/* FAT cache */ +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36) +DECLARE_MUTEX(f_sem); +#else +DEFINE_SEMAPHORE(f_sem); +#endif +BUF_CACHE_T FAT_cache_array[FAT_CACHE_SIZE]; +BUF_CACHE_T FAT_cache_lru_list; +BUF_CACHE_T FAT_cache_hash_list[FAT_CACHE_HASH_SIZE]; + +/* buf cache */ +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36) +DECLARE_MUTEX(b_sem); +#else +DEFINE_SEMAPHORE(b_sem); +#endif +BUF_CACHE_T buf_cache_array[BUF_CACHE_SIZE]; +BUF_CACHE_T buf_cache_lru_list; +BUF_CACHE_T buf_cache_hash_list[BUF_CACHE_HASH_SIZE]; diff --git a/fs/exfat/exfat_data.h b/fs/exfat/exfat_data.h new file mode 100644 index 00000000000..53b0e39397f --- /dev/null +++ b/fs/exfat/exfat_data.h @@ -0,0 +1,58 @@ +/* + * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/************************************************************************/ +/* */ +/* PROJECT : exFAT & FAT12/16/32 File System */ +/* FILE : exfat_data.h */ +/* PURPOSE : Header File for exFAT Configuable Constants */ +/* */ +/*----------------------------------------------------------------------*/ +/* NOTES */ +/* */ +/*----------------------------------------------------------------------*/ +/* REVISION HISTORY (Ver 0.9) */ +/* */ +/* - 2010.11.15 [Joosun Hahn] : first writing */ +/* */ +/************************************************************************/ + +#ifndef _EXFAT_DATA_H +#define _EXFAT_DATA_H + +#include "exfat_config.h" + +/*======================================================================*/ +/* */ +/* FFS CONFIGURATIONS */ +/* (CHANGE THIS PART IF REQUIRED) */ +/* */ +/*======================================================================*/ + +/* max number of root directory entries in FAT12/16 */ +/* (should be an exponential value of 2) */ +#define MAX_DENTRY 512 + +/* cache size (in number of sectors) */ +/* (should be an exponential value of 2) */ +#define FAT_CACHE_SIZE 128 +#define FAT_CACHE_HASH_SIZE 64 +#define BUF_CACHE_SIZE 256 +#define BUF_CACHE_HASH_SIZE 64 + +#endif /* _EXFAT_DATA_H */ diff --git a/fs/exfat/exfat_nls.c b/fs/exfat/exfat_nls.c new file mode 100644 index 00000000000..a48b3d05a7c --- /dev/null +++ b/fs/exfat/exfat_nls.c @@ -0,0 +1,448 @@ +/* + * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/************************************************************************/ +/* */ +/* PROJECT : exFAT & FAT12/16/32 File System */ +/* FILE : exfat_nls.c */ +/* PURPOSE : exFAT NLS Manager */ +/* */ +/*----------------------------------------------------------------------*/ +/* NOTES */ +/* */ +/*----------------------------------------------------------------------*/ +/* REVISION HISTORY (Ver 0.9) */ +/* */ +/* - 2010.11.15 [Joosun Hahn] : first writing */ +/* */ +/************************************************************************/ + +#include "exfat_config.h" +#include "exfat_data.h" + +#include "exfat_nls.h" +#include "exfat_api.h" +#include "exfat_super.h" +#include "exfat_core.h" + +#include + +/*----------------------------------------------------------------------*/ +/* Global Variable Definitions */ +/*----------------------------------------------------------------------*/ + +/*----------------------------------------------------------------------*/ +/* Local Variable Definitions */ +/*----------------------------------------------------------------------*/ + +static u16 bad_dos_chars[] = { + /* + , ; = [ ] */ + 0x002B, 0x002C, 0x003B, 0x003D, 0x005B, 0x005D, + 0xFF0B, 0xFF0C, 0xFF1B, 0xFF1D, 0xFF3B, 0xFF3D, + 0 +}; + +static u16 bad_uni_chars[] = { + /* " * / : < > ? \ | */ + 0x0022, 0x002A, 0x002F, 0x003A, + 0x003C, 0x003E, 0x003F, 0x005C, 0x007C, + 0 +}; + +/*----------------------------------------------------------------------*/ +/* Local Function Declarations */ +/*----------------------------------------------------------------------*/ + +static s32 convert_uni_to_ch(struct nls_table *nls, u8 *ch, u16 uni, s32 *lossy); +static s32 convert_ch_to_uni(struct nls_table *nls, u16 *uni, u8 *ch, s32 *lossy); + +/*======================================================================*/ +/* Global Function Definitions */ +/*======================================================================*/ + +u16 nls_upper(struct super_block *sb, u16 a) +{ + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + + if (EXFAT_SB(sb)->options.casesensitive) + return a; + if (p_fs->vol_utbl != NULL && (p_fs->vol_utbl)[get_col_index(a)] != NULL) + return (p_fs->vol_utbl)[get_col_index(a)][get_row_index(a)]; + else + return a; +} + +u16 *nls_wstrchr(u16 *str, u16 wchar) +{ + while (*str) { + if (*(str++) == wchar) + return str; + } + + return 0; +} + +s32 nls_dosname_cmp(struct super_block *sb, u8 *a, u8 *b) +{ + return strncmp((void *) a, (void *) b, DOS_NAME_LENGTH); +} /* end of nls_dosname_cmp */ + +s32 nls_uniname_cmp(struct super_block *sb, u16 *a, u16 *b) +{ + int i; + + for (i = 0; i < MAX_NAME_LENGTH; i++, a++, b++) { + if (nls_upper(sb, *a) != nls_upper(sb, *b)) + return 1; + if (*a == 0x0) + return 0; + } + return 0; +} /* end of nls_uniname_cmp */ + +void nls_uniname_to_dosname(struct super_block *sb, DOS_NAME_T *p_dosname, UNI_NAME_T *p_uniname, s32 *p_lossy) +{ + int i, j, len, lossy = FALSE; + u8 buf[MAX_CHARSET_SIZE]; + u8 lower = 0, upper = 0; + u8 *dosname = p_dosname->name; + u16 *uniname = p_uniname->name; + u16 *p, *last_period; + struct nls_table *nls = EXFAT_SB(sb)->nls_disk; + + for (i = 0; i < DOS_NAME_LENGTH; i++) + *(dosname+i) = ' '; + + if (!nls_uniname_cmp(sb, uniname, (u16 *) UNI_CUR_DIR_NAME)) { + *(dosname) = '.'; + p_dosname->name_case = 0x0; + if (p_lossy != NULL) + *p_lossy = FALSE; + return; + } + + if (!nls_uniname_cmp(sb, uniname, (u16 *) UNI_PAR_DIR_NAME)) { + *(dosname) = '.'; + *(dosname+1) = '.'; + p_dosname->name_case = 0x0; + if (p_lossy != NULL) + *p_lossy = FALSE; + return; + } + + /* search for the last embedded period */ + last_period = NULL; + for (p = uniname; *p; p++) { + if (*p == (u16) '.') + last_period = p; + } + + i = 0; + while (i < DOS_NAME_LENGTH) { + if (i == 8) { + if (last_period == NULL) + break; + + if (uniname <= last_period) { + if (uniname < last_period) + lossy = TRUE; + uniname = last_period + 1; + } + } + + if (*uniname == (u16) '\0') { + break; + } else if (*uniname == (u16) ' ') { + lossy = TRUE; + } else if (*uniname == (u16) '.') { + if (uniname < last_period) + lossy = TRUE; + else + i = 8; + } else if (nls_wstrchr(bad_dos_chars, *uniname)) { + lossy = TRUE; + *(dosname+i) = '_'; + i++; + } else { + len = convert_uni_to_ch(nls, buf, *uniname, &lossy); + + if (len > 1) { + if ((i >= 8) && ((i+len) > DOS_NAME_LENGTH)) + break; + + if ((i < 8) && ((i+len) > 8)) { + i = 8; + continue; + } + + lower = 0xFF; + + for (j = 0; j < len; j++, i++) + *(dosname+i) = *(buf+j); + } else { /* len == 1 */ + if ((*buf >= 'a') && (*buf <= 'z')) { + *(dosname+i) = *buf - ('a' - 'A'); + + if (i < 8) + lower |= 0x08; + else + lower |= 0x10; + } else if ((*buf >= 'A') && (*buf <= 'Z')) { + *(dosname+i) = *buf; + + if (i < 8) + upper |= 0x08; + else + upper |= 0x10; + } else { + *(dosname+i) = *buf; + } + i++; + } + } + + uniname++; + } + + if (*dosname == 0xE5) + *dosname = 0x05; + + if (*uniname != 0x0) + lossy = TRUE; + + if (upper & lower) + p_dosname->name_case = 0xFF; + else + p_dosname->name_case = lower; + + if (p_lossy != NULL) + *p_lossy = lossy; +} /* end of nls_uniname_to_dosname */ + +void nls_dosname_to_uniname(struct super_block *sb, UNI_NAME_T *p_uniname, DOS_NAME_T *p_dosname) +{ + int i = 0, j, n = 0; + u8 buf[DOS_NAME_LENGTH+2]; + u8 *dosname = p_dosname->name; + u16 *uniname = p_uniname->name; + struct nls_table *nls = EXFAT_SB(sb)->nls_disk; + + if (*dosname == 0x05) { + *buf = 0xE5; + i++; + n++; + } + + for (; i < 8; i++, n++) { + if (*(dosname+i) == ' ') + break; + + if ((*(dosname+i) >= 'A') && (*(dosname+i) <= 'Z') && (p_dosname->name_case & 0x08)) + *(buf+n) = *(dosname+i) + ('a' - 'A'); + else + *(buf+n) = *(dosname+i); + } + if (*(dosname+8) != ' ') { + *(buf+n) = '.'; + n++; + } + + for (i = 8; i < DOS_NAME_LENGTH; i++, n++) { + if (*(dosname+i) == ' ') + break; + + if ((*(dosname+i) >= 'A') && (*(dosname+i) <= 'Z') && (p_dosname->name_case & 0x10)) + *(buf+n) = *(dosname+i) + ('a' - 'A'); + else + *(buf+n) = *(dosname+i); + } + *(buf+n) = '\0'; + + i = j = 0; + while (j < (MAX_NAME_LENGTH-1)) { + if (*(buf+i) == '\0') + break; + + i += convert_ch_to_uni(nls, uniname, (buf+i), NULL); + + uniname++; + j++; + } + + *uniname = (u16) '\0'; +} /* end of nls_dosname_to_uniname */ + +void nls_uniname_to_cstring(struct super_block *sb, u8 *p_cstring, UNI_NAME_T *p_uniname) +{ + int i, j, len; + u8 buf[MAX_CHARSET_SIZE]; + u16 *uniname = p_uniname->name; + struct nls_table *nls = EXFAT_SB(sb)->nls_io; + + if (nls == NULL) { + len = utf16s_to_utf8s(uniname, MAX_NAME_LENGTH, UTF16_HOST_ENDIAN, p_cstring, MAX_NAME_LENGTH); + p_cstring[len] = 0; + return; + } + + i = 0; + while (i < (MAX_NAME_LENGTH-1)) { + if (*uniname == (u16) '\0') + break; + + len = convert_uni_to_ch(nls, buf, *uniname, NULL); + + if (len > 1) { + for (j = 0; j < len; j++) + *p_cstring++ = (char) *(buf+j); + } else { /* len == 1 */ + *p_cstring++ = (char) *buf; + } + + uniname++; + i++; + } + + *p_cstring = '\0'; +} /* end of nls_uniname_to_cstring */ + +void nls_cstring_to_uniname(struct super_block *sb, UNI_NAME_T *p_uniname, u8 *p_cstring, s32 *p_lossy) +{ + int i, j, lossy = FALSE; + u8 *end_of_name; + u8 upname[MAX_NAME_LENGTH * 2]; + u16 *uniname = p_uniname->name; + struct nls_table *nls = EXFAT_SB(sb)->nls_io; + + + /* strip all trailing spaces */ + end_of_name = p_cstring + strlen((char *) p_cstring); + + while (*(--end_of_name) == ' ') { + if (end_of_name < p_cstring) + break; + } + *(++end_of_name) = '\0'; + + if (strcmp((char *) p_cstring, ".") && strcmp((char *) p_cstring, "..")) { + + /* strip all trailing periods */ + while (*(--end_of_name) == '.') { + if (end_of_name < p_cstring) + break; + } + *(++end_of_name) = '\0'; + } + + if (*p_cstring == '\0') + lossy = TRUE; + + if (nls == NULL) { +#if LINUX_VERSION_CODE < KERNEL_VERSION(3,0,101) + i = utf8s_to_utf16s(p_cstring, MAX_NAME_LENGTH, uniname); +#else + i = utf8s_to_utf16s(p_cstring, MAX_NAME_LENGTH, UTF16_HOST_ENDIAN, uniname, MAX_NAME_LENGTH); +#endif + for (j = 0; j < i; j++) + SET16_A(upname + j * 2, nls_upper(sb, uniname[j])); + uniname[i] = '\0'; + } + else { + i = j = 0; + while (j < (MAX_NAME_LENGTH-1)) { + if (*(p_cstring+i) == '\0') + break; + + i += convert_ch_to_uni(nls, uniname, (u8 *)(p_cstring+i), &lossy); + + if ((*uniname < 0x0020) || nls_wstrchr(bad_uni_chars, *uniname)) + lossy = TRUE; + + SET16_A(upname + j * 2, nls_upper(sb, *uniname)); + + uniname++; + j++; + } + + if (*(p_cstring+i) != '\0') + lossy = TRUE; + *uniname = (u16) '\0'; + } + + p_uniname->name_len = j; + p_uniname->name_hash = calc_checksum_2byte((void *) upname, j<<1, 0, CS_DEFAULT); + + if (p_lossy != NULL) + *p_lossy = lossy; +} /* end of nls_cstring_to_uniname */ + +/*======================================================================*/ +/* Local Function Definitions */ +/*======================================================================*/ + +static s32 convert_ch_to_uni(struct nls_table *nls, u16 *uni, u8 *ch, s32 *lossy) +{ + int len; + + *uni = 0x0; + + if (ch[0] < 0x80) { + *uni = (u16) ch[0]; + return 1; + } + + len = nls->char2uni(ch, NLS_MAX_CHARSET_SIZE, uni); + if (len < 0) { + /* conversion failed */ + printk("%s: fail to use nls\n", __func__); + if (lossy != NULL) + *lossy = TRUE; + *uni = (u16) '_'; + if (!strcmp(nls->charset, "utf8")) + return 1; + else + return 2; + } + + return len; +} /* end of convert_ch_to_uni */ + +static s32 convert_uni_to_ch(struct nls_table *nls, u8 *ch, u16 uni, s32 *lossy) +{ + int len; + + ch[0] = 0x0; + + if (uni < 0x0080) { + ch[0] = (u8) uni; + return 1; + } + + len = nls->uni2char(uni, ch, NLS_MAX_CHARSET_SIZE); + if (len < 0) { + /* conversion failed */ + printk("%s: fail to use nls\n", __func__); + if (lossy != NULL) + *lossy = TRUE; + ch[0] = '_'; + return 1; + } + + return len; + +} /* end of convert_uni_to_ch */ diff --git a/fs/exfat/exfat_nls.h b/fs/exfat/exfat_nls.h new file mode 100644 index 00000000000..bc516d762e9 --- /dev/null +++ b/fs/exfat/exfat_nls.h @@ -0,0 +1,91 @@ +/* + * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/************************************************************************/ +/* */ +/* PROJECT : exFAT & FAT12/16/32 File System */ +/* FILE : exfat_nls.h */ +/* PURPOSE : Header File for exFAT NLS Manager */ +/* */ +/*----------------------------------------------------------------------*/ +/* NOTES */ +/* */ +/*----------------------------------------------------------------------*/ +/* REVISION HISTORY (Ver 0.9) */ +/* */ +/* - 2010.11.15 [Joosun Hahn] : first writing */ +/* */ +/************************************************************************/ + +#ifndef _EXFAT_NLS_H +#define _EXFAT_NLS_H + +#include +#include + +#include "exfat_config.h" +#include "exfat_api.h" + +/*----------------------------------------------------------------------*/ +/* Constant & Macro Definitions */ +/*----------------------------------------------------------------------*/ + +#define NUM_UPCASE 2918 + +#define DOS_CUR_DIR_NAME ". " +#define DOS_PAR_DIR_NAME ".. " + +#ifdef __LITTLE_ENDIAN +#define UNI_CUR_DIR_NAME ".\0" +#define UNI_PAR_DIR_NAME ".\0.\0" +#else +#define UNI_CUR_DIR_NAME "\0." +#define UNI_PAR_DIR_NAME "\0.\0." +#endif + +/*----------------------------------------------------------------------*/ +/* Type Definitions */ +/*----------------------------------------------------------------------*/ + +/* DOS name stucture */ +typedef struct { + u8 name[DOS_NAME_LENGTH]; + u8 name_case; +} DOS_NAME_T; + +/* unicode name stucture */ +typedef struct { + u16 name[MAX_NAME_LENGTH]; + u16 name_hash; + u8 name_len; +} UNI_NAME_T; + +/*----------------------------------------------------------------------*/ +/* External Function Declarations */ +/*----------------------------------------------------------------------*/ + +/* NLS management function */ +u16 nls_upper(struct super_block *sb, u16 a); +s32 nls_dosname_cmp(struct super_block *sb, u8 *a, u8 *b); +s32 nls_uniname_cmp(struct super_block *sb, u16 *a, u16 *b); +void nls_uniname_to_dosname(struct super_block *sb, DOS_NAME_T *p_dosname, UNI_NAME_T *p_uniname, s32 *p_lossy); +void nls_dosname_to_uniname(struct super_block *sb, UNI_NAME_T *p_uniname, DOS_NAME_T *p_dosname); +void nls_uniname_to_cstring(struct super_block *sb, u8 *p_cstring, UNI_NAME_T *p_uniname); +void nls_cstring_to_uniname(struct super_block *sb, UNI_NAME_T *p_uniname, u8 *p_cstring, s32 *p_lossy); + +#endif /* _EXFAT_NLS_H */ diff --git a/fs/exfat/exfat_oal.c b/fs/exfat/exfat_oal.c new file mode 100644 index 00000000000..743544244ca --- /dev/null +++ b/fs/exfat/exfat_oal.c @@ -0,0 +1,196 @@ +/* Some of the source code in this file came from "linux/fs/fat/misc.c". */ +/* + * linux/fs/fat/misc.c + * + * Written 1992,1993 by Werner Almesberger + * 22/11/2000 - Fixed fat_date_unix2dos for dates earlier than 01/01/1980 + * and date_dos2unix for date==0 by Igor Zhbanov(bsg@uniyar.ac.ru) + */ + +/* + * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/************************************************************************/ +/* */ +/* PROJECT : exFAT & FAT12/16/32 File System */ +/* FILE : exfat_oal.c */ +/* PURPOSE : exFAT OS Adaptation Layer */ +/* (Semaphore Functions & Real-Time Clock Functions) */ +/* */ +/*----------------------------------------------------------------------*/ +/* NOTES */ +/* */ +/*----------------------------------------------------------------------*/ +/* REVISION HISTORY (Ver 0.9) */ +/* */ +/* - 2010.11.15 [Joosun Hahn] : first writing */ +/* */ +/************************************************************************/ + +#include +#include + +#include "exfat_config.h" +#include "exfat_api.h" +#include "exfat_oal.h" + +/*======================================================================*/ +/* */ +/* SEMAPHORE FUNCTIONS */ +/* */ +/*======================================================================*/ + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36) +DECLARE_MUTEX(z_sem); +#else +DEFINE_SEMAPHORE(z_sem); +#endif + +s32 sm_init(struct semaphore *sm) +{ + sema_init(sm, 1); + return 0; +} /* end of sm_init */ + +s32 sm_P(struct semaphore *sm) +{ + down(sm); + return 0; +} /* end of sm_P */ + +void sm_V(struct semaphore *sm) +{ + up(sm); +} /* end of sm_V */ + + +/*======================================================================*/ +/* */ +/* REAL-TIME CLOCK FUNCTIONS */ +/* */ +/*======================================================================*/ + +extern struct timezone sys_tz; + +/* + * The epoch of FAT timestamp is 1980. + * : bits : value + * date: 0 - 4: day (1 - 31) + * date: 5 - 8: month (1 - 12) + * date: 9 - 15: year (0 - 127) from 1980 + * time: 0 - 4: sec (0 - 29) 2sec counts + * time: 5 - 10: min (0 - 59) + * time: 11 - 15: hour (0 - 23) + */ +#define UNIX_SECS_1980 315532800L + +#if BITS_PER_LONG == 64 +#define UNIX_SECS_2108 4354819200L +#endif +/* days between 1.1.70 and 1.1.80 (2 leap days) */ +#define DAYS_DELTA_DECADE (365 * 10 + 2) +/* 120 (2100 - 1980) isn't leap year */ +#define NO_LEAP_YEAR_2100 (120) +#define IS_LEAP_YEAR(y) (!((y) & 3) && (y) != NO_LEAP_YEAR_2100) + +#define SECS_PER_MIN (60) +#define SECS_PER_HOUR (60 * SECS_PER_MIN) +#define SECS_PER_DAY (24 * SECS_PER_HOUR) + +#define MAKE_LEAP_YEAR(leap_year, year) \ + do { \ + if (unlikely(year > NO_LEAP_YEAR_2100)) \ + leap_year = ((year + 3) / 4) - 1; \ + else \ + leap_year = ((year + 3) / 4); \ + } while (0) + +/* Linear day numbers of the respective 1sts in non-leap years. */ +static time_t accum_days_in_year[] = { + /* Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec */ + 0, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 0, 0, 0, +}; + +TIMESTAMP_T *tm_current(TIMESTAMP_T *tp) +{ + struct timespec ts; + time_t second, day, leap_day, month, year; + +#if LINUX_VERSION_CODE < KERNEL_VERSION(4,8,0) + ts = CURRENT_TIME_SEC; +#else + ktime_get_real_ts(&ts); +#endif + + second = ts.tv_sec; + second -= sys_tz.tz_minuteswest * SECS_PER_MIN; + + /* Jan 1 GMT 00:00:00 1980. But what about another time zone? */ + if (second < UNIX_SECS_1980) { + tp->sec = 0; + tp->min = 0; + tp->hour = 0; + tp->day = 1; + tp->mon = 1; + tp->year = 0; + return tp; + } +#if BITS_PER_LONG == 64 + if (second >= UNIX_SECS_2108) { + tp->sec = 59; + tp->min = 59; + tp->hour = 23; + tp->day = 31; + tp->mon = 12; + tp->year = 127; + return tp; + } +#endif + + day = second / SECS_PER_DAY - DAYS_DELTA_DECADE; + year = day / 365; + + MAKE_LEAP_YEAR(leap_day, year); + if (year * 365 + leap_day > day) + year--; + + MAKE_LEAP_YEAR(leap_day, year); + + day -= year * 365 + leap_day; + + if (IS_LEAP_YEAR(year) && day == accum_days_in_year[3]) { + month = 2; + } else { + if (IS_LEAP_YEAR(year) && day > accum_days_in_year[3]) + day--; + for (month = 1; month < 12; month++) { + if (accum_days_in_year[month + 1] > day) + break; + } + } + day -= accum_days_in_year[month]; + + tp->sec = second % SECS_PER_MIN; + tp->min = (second / SECS_PER_MIN) % 60; + tp->hour = (second / SECS_PER_HOUR) % 24; + tp->day = day + 1; + tp->mon = month; + tp->year = year; + + return tp; +} /* end of tm_current */ diff --git a/fs/exfat/exfat_oal.h b/fs/exfat/exfat_oal.h new file mode 100644 index 00000000000..b6dd7897ab6 --- /dev/null +++ b/fs/exfat/exfat_oal.h @@ -0,0 +1,74 @@ +/* + * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/************************************************************************/ +/* */ +/* PROJECT : exFAT & FAT12/16/32 File System */ +/* FILE : exfat_oal.h */ +/* PURPOSE : Header File for exFAT OS Adaptation Layer */ +/* (Semaphore Functions & Real-Time Clock Functions) */ +/* */ +/*----------------------------------------------------------------------*/ +/* NOTES */ +/* */ +/*----------------------------------------------------------------------*/ +/* REVISION HISTORY (Ver 0.9) */ +/* */ +/* - 2010.11.15 [Joosun Hahn] : first writing */ +/* */ +/************************************************************************/ + +#ifndef _EXFAT_OAL_H +#define _EXFAT_OAL_H + +#include +#include "exfat_config.h" +#include + +/*----------------------------------------------------------------------*/ +/* Constant & Macro Definitions (Configurable) */ +/*----------------------------------------------------------------------*/ + +/*----------------------------------------------------------------------*/ +/* Constant & Macro Definitions (Non-Configurable) */ +/*----------------------------------------------------------------------*/ + +/*----------------------------------------------------------------------*/ +/* Type Definitions */ +/*----------------------------------------------------------------------*/ + +typedef struct { + u16 sec; /* 0 ~ 59 */ + u16 min; /* 0 ~ 59 */ + u16 hour; /* 0 ~ 23 */ + u16 day; /* 1 ~ 31 */ + u16 mon; /* 1 ~ 12 */ + u16 year; /* 0 ~ 127 (since 1980) */ +} TIMESTAMP_T; + +/*----------------------------------------------------------------------*/ +/* External Function Declarations */ +/*----------------------------------------------------------------------*/ + +s32 sm_init(struct semaphore *sm); +s32 sm_P(struct semaphore *sm); +void sm_V(struct semaphore *sm); + +TIMESTAMP_T *tm_current(TIMESTAMP_T *tm); + +#endif /* _EXFAT_OAL_H */ diff --git a/fs/exfat/exfat_super.c b/fs/exfat/exfat_super.c new file mode 100644 index 00000000000..714755e2e61 --- /dev/null +++ b/fs/exfat/exfat_super.c @@ -0,0 +1,2719 @@ +/* Some of the source code in this file came from "linux/fs/fat/file.c","linux/fs/fat/inode.c" and "linux/fs/fat/misc.c". */ +/* + * linux/fs/fat/file.c + * + * Written 1992,1993 by Werner Almesberger + * + * regular file handling primitives for fat-based filesystems + */ + +/* + * linux/fs/fat/inode.c + * + * Written 1992,1993 by Werner Almesberger + * VFAT extensions by Gordon Chaffee, merged with msdos fs by Henrik Storner + * Rewritten for the constant inumbers support by Al Viro + * + * Fixes: + * + * Max Cohan: Fixed invalid FSINFO offset when info_sector is 0 + */ + +/* + * linux/fs/fat/misc.c + * + * Written 1992,1993 by Werner Almesberger + * 22/11/2000 - Fixed fat_date_unix2dos for dates earlier than 01/01/1980 + * and date_dos2unix for date==0 by Igor Zhbanov(bsg@uniyar.ac.ru) + */ + +/* + * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include +#include +#include +#include +#include +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37) +#include +#endif +#include +#include +#include +#include +#include +#include +#include +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0) +#include +#endif +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 16, 0) +#include +#endif +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "exfat_version.h" +#include "exfat_config.h" +#include "exfat_data.h" +#include "exfat_oal.h" + +#include "exfat_blkdev.h" +#include "exfat_cache.h" +#include "exfat_nls.h" +#include "exfat_api.h" +#include "exfat_core.h" + +#include "exfat_super.h" + +static struct kmem_cache *exfat_inode_cachep; + +static int exfat_default_codepage = CONFIG_EXFAT_DEFAULT_CODEPAGE; +static char exfat_default_iocharset[] = CONFIG_EXFAT_DEFAULT_IOCHARSET; + +extern struct timezone sys_tz; + +#if LINUX_VERSION_CODE < KERNEL_VERSION(4,8,0) +#define current_time(x) (CURRENT_TIME_SEC) +#endif + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 16, 0) +#define USE_NEW_IVERSION_API +#define INC_IVERSION(x) (inode_inc_iversion(x)) +#define GET_IVERSION(x) (inode_peek_iversion_raw(x)) +#define SET_IVERSION(x,y) (inode_set_iversion(x, y)) +#else +#define INC_IVERSION(x) (x->i_version++) +#define GET_IVERSION(x) (x->i_version) +#define SET_IVERSION(x,y) (x->i_version = y) +#endif + +#define CHECK_ERR(x) BUG_ON(x) + +#define UNIX_SECS_1980 315532800L + +#if BITS_PER_LONG == 64 +#define UNIX_SECS_2108 4354819200L +#endif +/* days between 1.1.70 and 1.1.80 (2 leap days) */ +#define DAYS_DELTA_DECADE (365 * 10 + 2) +/* 120 (2100 - 1980) isn't leap year */ +#define NO_LEAP_YEAR_2100 (120) +#define IS_LEAP_YEAR(y) (!((y) & 0x3) && (y) != NO_LEAP_YEAR_2100) + +#define SECS_PER_MIN (60) +#define SECS_PER_HOUR (60 * SECS_PER_MIN) +#define SECS_PER_DAY (24 * SECS_PER_HOUR) + +#define MAKE_LEAP_YEAR(leap_year, year) \ + do { \ + if (unlikely(year > NO_LEAP_YEAR_2100)) \ + leap_year = ((year + 3) / 4) - 1; \ + else \ + leap_year = ((year + 3) / 4); \ + } while (0) + +/* Linear day numbers of the respective 1sts in non-leap years. */ +static time_t accum_days_in_year[] = { + /* Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec */ + 0, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 0, 0, 0, +}; + +static void _exfat_truncate(struct inode *inode, loff_t old_size); + +/* Convert a FAT time/date pair to a UNIX date (seconds since 1 1 70). */ +void exfat_time_fat2unix(struct exfat_sb_info *sbi, struct timespec *ts, + DATE_TIME_T *tp) +{ + time_t year = tp->Year; + time_t ld; + + MAKE_LEAP_YEAR(ld, year); + + if (IS_LEAP_YEAR(year) && (tp->Month) > 2) + ld++; + + ts->tv_sec = tp->Second + tp->Minute * SECS_PER_MIN + + tp->Hour * SECS_PER_HOUR + + (year * 365 + ld + accum_days_in_year[(tp->Month)] + (tp->Day - 1) + DAYS_DELTA_DECADE) * SECS_PER_DAY + + sys_tz.tz_minuteswest * SECS_PER_MIN; + ts->tv_nsec = 0; +} + +/* Convert linear UNIX date to a FAT time/date pair. */ +void exfat_time_unix2fat(struct exfat_sb_info *sbi, struct timespec *ts, + DATE_TIME_T *tp) +{ + time_t second = ts->tv_sec; + time_t day, month, year; + time_t ld; + + second -= sys_tz.tz_minuteswest * SECS_PER_MIN; + + /* Jan 1 GMT 00:00:00 1980. But what about another time zone? */ + if (second < UNIX_SECS_1980) { + tp->Second = 0; + tp->Minute = 0; + tp->Hour = 0; + tp->Day = 1; + tp->Month = 1; + tp->Year = 0; + return; + } +#if (BITS_PER_LONG == 64) + if (second >= UNIX_SECS_2108) { + tp->Second = 59; + tp->Minute = 59; + tp->Hour = 23; + tp->Day = 31; + tp->Month = 12; + tp->Year = 127; + return; + } +#endif + day = second / SECS_PER_DAY - DAYS_DELTA_DECADE; + year = day / 365; + MAKE_LEAP_YEAR(ld, year); + if (year * 365 + ld > day) + year--; + + MAKE_LEAP_YEAR(ld, year); + day -= year * 365 + ld; + + if (IS_LEAP_YEAR(year) && day == accum_days_in_year[3]) { + month = 2; + } else { + if (IS_LEAP_YEAR(year) && day > accum_days_in_year[3]) + day--; + for (month = 1; month < 12; month++) { + if (accum_days_in_year[month + 1] > day) + break; + } + } + day -= accum_days_in_year[month]; + + tp->Second = second % SECS_PER_MIN; + tp->Minute = (second / SECS_PER_MIN) % 60; + tp->Hour = (second / SECS_PER_HOUR) % 24; + tp->Day = day + 1; + tp->Month = month; + tp->Year = year; +} + +static struct inode *exfat_iget(struct super_block *sb, loff_t i_pos); +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36) +static int exfat_generic_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg); +#else +static long exfat_generic_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); +#endif +static int exfat_sync_inode(struct inode *inode); +static struct inode *exfat_build_inode(struct super_block *sb, FILE_ID_T *fid, loff_t i_pos); +static void exfat_detach(struct inode *inode); +static void exfat_attach(struct inode *inode, loff_t i_pos); +static inline unsigned long exfat_hash(loff_t i_pos); +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,34) +static int exfat_write_inode(struct inode *inode, int wait); +#else +static int exfat_write_inode(struct inode *inode, struct writeback_control *wbc); +#endif +static void exfat_write_super(struct super_block *sb); + +static void __lock_super(struct super_block *sb) +{ +#if LINUX_VERSION_CODE < KERNEL_VERSION(3,7,0) + lock_super(sb); +#else + struct exfat_sb_info *sbi = EXFAT_SB(sb); + mutex_lock(&sbi->s_lock); +#endif +} + +static void __unlock_super(struct super_block *sb) +{ +#if LINUX_VERSION_CODE < KERNEL_VERSION(3,7,0) + unlock_super(sb); +#else + struct exfat_sb_info *sbi = EXFAT_SB(sb); + mutex_unlock(&sbi->s_lock); +#endif +} + +static int __is_sb_dirty(struct super_block *sb) +{ +#if LINUX_VERSION_CODE < KERNEL_VERSION(3,7,0) + return sb->s_dirt; +#else + struct exfat_sb_info *sbi = EXFAT_SB(sb); + return sbi->s_dirt; +#endif +} + +static void __set_sb_clean(struct super_block *sb) +{ +#if LINUX_VERSION_CODE < KERNEL_VERSION(3,7,0) + sb->s_dirt = 0; +#else + struct exfat_sb_info *sbi = EXFAT_SB(sb); + sbi->s_dirt = 0; +#endif +} + +static int __exfat_revalidate(struct dentry *dentry) +{ + return 0; +} + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,7,00) +static int exfat_revalidate(struct dentry *dentry, unsigned int flags) +#else +static int exfat_revalidate(struct dentry *dentry, struct nameidata *nd) +#endif +{ +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,7,00) + if (flags & LOOKUP_RCU) + return -ECHILD; +#elif LINUX_VERSION_CODE >= KERNEL_VERSION(3,0,00) + if (nd && nd->flags & LOOKUP_RCU) + return -ECHILD; +#endif + + if (dentry->d_inode) + return 1; + return __exfat_revalidate(dentry); +} + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,7,00) +static int exfat_revalidate_ci(struct dentry *dentry, unsigned int flags) +#else +static int exfat_revalidate_ci(struct dentry *dentry, struct nameidata *nd) +#endif +{ +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,7,00) + if (flags & LOOKUP_RCU) + return -ECHILD; +#else + unsigned int flags; + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,0,00) + if (nd && nd->flags & LOOKUP_RCU) + return -ECHILD; +#endif + + flags = nd ? nd->flags : 0; +#endif + + if (dentry->d_inode) + return 1; + + if (!flags) + return 0; + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,0,00) + if (flags & (LOOKUP_CREATE | LOOKUP_RENAME_TARGET)) + return 0; +#else + if (!(nd->flags & (LOOKUP_CONTINUE | LOOKUP_PARENT))) { + if (nd->flags & (LOOKUP_CREATE | LOOKUP_RENAME_TARGET)) + return 0; + } +#endif + + return __exfat_revalidate(dentry); +} + +static unsigned int __exfat_striptail_len(unsigned int len, const char *name) +{ + while (len && name[len - 1] == '.') + len--; + return len; +} + +static unsigned int exfat_striptail_len(const struct qstr *qstr) +{ + return __exfat_striptail_len(qstr->len, qstr->name); +} + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0) +static int exfat_d_hash(const struct dentry *dentry, struct qstr *qstr) +#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38) +static int exfat_d_hash(struct dentry *dentry, struct qstr *qstr) +#else +static int exfat_d_hash(const struct dentry *dentry, const struct inode *inode, + struct qstr *qstr) +#endif +{ +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,8,0) + qstr->hash = full_name_hash(dentry, qstr->name, exfat_striptail_len(qstr)); +#else + qstr->hash = full_name_hash(qstr->name, exfat_striptail_len(qstr)); +#endif + return 0; +} + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0) +static int exfat_d_hashi(const struct dentry *dentry, struct qstr *qstr) +#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38) +static int exfat_d_hashi(struct dentry *dentry, struct qstr *qstr) +#else +static int exfat_d_hashi(const struct dentry *dentry, const struct inode *inode, + struct qstr *qstr) +#endif +{ + struct super_block *sb = dentry->d_sb; + const unsigned char *name; + unsigned int len; + unsigned long hash; + + name = qstr->name; + len = exfat_striptail_len(qstr); + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,8,0) + hash = init_name_hash(dentry); +#else + hash = init_name_hash(); +#endif + while (len--) + hash = partial_name_hash(nls_upper(sb, *name++), hash); + qstr->hash = end_name_hash(hash); + + return 0; +} + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,8,0) +static int exfat_cmpi(const struct dentry *dentry, + unsigned int len, const char *str, const struct qstr *name) +#elif LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0) +static int exfat_cmpi(const struct dentry *parent, const struct dentry *dentry, + unsigned int len, const char *str, const struct qstr *name) +#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38) +static int exfat_cmpi(struct dentry *parent, struct qstr *a, struct qstr *b) +#else +static int exfat_cmpi(const struct dentry *parent, const struct inode *pinode, + const struct dentry *dentry, const struct inode *inode, + unsigned int len, const char *str, const struct qstr *name) +#endif +{ +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,8,0) + struct nls_table *t = EXFAT_SB(dentry->d_sb)->nls_io; +#else + struct nls_table *t = EXFAT_SB(parent->d_sb)->nls_io; +#endif + unsigned int alen, blen; + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38) + alen = exfat_striptail_len(a); + blen = exfat_striptail_len(b); +#else + alen = exfat_striptail_len(name); + blen = __exfat_striptail_len(len, str); +#endif + if (alen == blen) { + if (t == NULL) { +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38) + if (strncasecmp(a->name, b->name, alen) == 0) +#else + if (strncasecmp(name->name, str, alen) == 0) +#endif + return 0; +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38) + } else if (nls_strnicmp(t, a->name, b->name, alen) == 0) +#else + } else if (nls_strnicmp(t, name->name, str, alen) == 0) +#endif + return 0; + } + return 1; +} +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,8,0) +static int exfat_cmp(const struct dentry *dentry, + unsigned int len, const char *str, const struct qstr *name) +#elif LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0) +static int exfat_cmp(const struct dentry *parent, const struct dentry *dentry, + unsigned int len, const char *str, const struct qstr *name) +#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38) +static int exfat_cmp(struct dentry *parent, struct qstr *a, + struct qstr *b) +#else +static int exfat_cmp(const struct dentry *parent, const struct inode *pinode, + const struct dentry *dentry, const struct inode *inode, + unsigned int len, const char *str, const struct qstr *name) +#endif +{ + unsigned int alen, blen; + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38) + alen = exfat_striptail_len(a); + blen = exfat_striptail_len(b); +#else + alen = exfat_striptail_len(name); + blen = __exfat_striptail_len(len, str); +#endif + if (alen == blen) { +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38) + if (strncmp(a->name, b->name, alen) == 0) +#else + if (strncmp(name->name, str, alen) == 0) +#endif + return 0; + } + return 1; +} + +static const struct dentry_operations exfat_ci_dentry_ops = { + .d_revalidate = exfat_revalidate_ci, + .d_hash = exfat_d_hashi, + .d_compare = exfat_cmpi, +}; + +static const struct dentry_operations exfat_dentry_ops = { + .d_revalidate = exfat_revalidate, + .d_hash = exfat_d_hash, + .d_compare = exfat_cmp, +}; + +/*======================================================================*/ +/* Directory Entry Operations */ +/*======================================================================*/ + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0) +static int exfat_readdir(struct file *filp, struct dir_context *ctx) +#else +static int exfat_readdir(struct file *filp, void *dirent, filldir_t filldir) +#endif +{ +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0) + struct inode *inode = file_inode(filp); +#else + struct inode *inode = filp->f_path.dentry->d_inode; +#endif + struct super_block *sb = inode->i_sb; + struct exfat_sb_info *sbi = EXFAT_SB(sb); + FS_INFO_T *p_fs = &(sbi->fs_info); + BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info); + DIR_ENTRY_T de; + unsigned long inum; + loff_t cpos; + int err = 0; + + __lock_super(sb); + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0) + cpos = ctx->pos; +#else + cpos = filp->f_pos; +#endif + /* Fake . and .. for the root directory. */ + if ((p_fs->vol_type == EXFAT) || (inode->i_ino == EXFAT_ROOT_INO)) { + while (cpos < 2) { + if (inode->i_ino == EXFAT_ROOT_INO) + inum = EXFAT_ROOT_INO; + else if (cpos == 0) + inum = inode->i_ino; + else /* (cpos == 1) */ + inum = parent_ino(filp->f_path.dentry); + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0) + if (!dir_emit_dots(filp, ctx)) +#else + if (filldir(dirent, "..", cpos+1, cpos, inum, DT_DIR) < 0) +#endif + goto out; + cpos++; +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0) + ctx->pos++; +#else + filp->f_pos++; +#endif + } + if (cpos == 2) + cpos = 0; + } + if (cpos & (DENTRY_SIZE - 1)) { + err = -ENOENT; + goto out; + } + +get_new: + EXFAT_I(inode)->fid.size = i_size_read(inode); + EXFAT_I(inode)->fid.rwoffset = cpos >> DENTRY_SIZE_BITS; + + err = FsReadDir(inode, &de); + if (err) { + /* at least we tried to read a sector + * move cpos to next sector position (should be aligned) + */ + if (err == FFS_MEDIAERR) { + cpos += 1 << p_bd->sector_size_bits; + cpos &= ~((1 << p_bd->sector_size_bits)-1); + } + + err = -EIO; + goto end_of_dir; + } + + cpos = EXFAT_I(inode)->fid.rwoffset << DENTRY_SIZE_BITS; + + if (!de.Name[0]) + goto end_of_dir; + + if (!memcmp(de.ShortName, DOS_CUR_DIR_NAME, DOS_NAME_LENGTH)) { + inum = inode->i_ino; + } else if (!memcmp(de.ShortName, DOS_PAR_DIR_NAME, DOS_NAME_LENGTH)) { + inum = parent_ino(filp->f_path.dentry); + } else { + loff_t i_pos = ((loff_t) EXFAT_I(inode)->fid.start_clu << 32) | + ((EXFAT_I(inode)->fid.rwoffset-1) & 0xffffffff); + + struct inode *tmp = exfat_iget(sb, i_pos); + if (tmp) { + inum = tmp->i_ino; + iput(tmp); + } else { + inum = iunique(sb, EXFAT_ROOT_INO); + } + } + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0) + if (!dir_emit(ctx, de.Name, strlen(de.Name), inum, + (de.Attr & ATTR_SUBDIR) ? DT_DIR : DT_REG)) +#else + if (filldir(dirent, de.Name, strlen(de.Name), cpos-1, inum, + (de.Attr & ATTR_SUBDIR) ? DT_DIR : DT_REG) < 0) +#endif + goto out; + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0) + ctx->pos = cpos; +#else + filp->f_pos = cpos; +#endif + goto get_new; + +end_of_dir: +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0) + ctx->pos = cpos; +#else + filp->f_pos = cpos; +#endif +out: + __unlock_super(sb); + return err; +} + +static int exfat_ioctl_volume_id(struct inode *dir) +{ + struct super_block *sb = dir->i_sb; + struct exfat_sb_info *sbi = EXFAT_SB(sb); + FS_INFO_T *p_fs = &(sbi->fs_info); + + return p_fs->vol_id; +} + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36) +static int exfat_generic_ioctl(struct inode *inode, struct file *filp, + unsigned int cmd, unsigned long arg) +#else +static long exfat_generic_ioctl(struct file *filp, + unsigned int cmd, unsigned long arg) +#endif +{ +#if !(LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36)) + #if !(LINUX_VERSION_CODE < KERNEL_VERSION(3,18,3)) + struct inode *inode = filp->f_path.dentry->d_inode; + #else + struct inode *inode = filp->f_dentry->d_inode; + #endif +#endif +#ifdef CONFIG_EXFAT_KERNEL_DEBUG + unsigned int flags; +#endif /* CONFIG_EXFAT_KERNEL_DEBUG */ + + switch (cmd) { + case EXFAT_IOCTL_GET_VOLUME_ID: + return exfat_ioctl_volume_id(inode); +#ifdef CONFIG_EXFAT_KERNEL_DEBUG + case EXFAT_IOC_GET_DEBUGFLAGS: { + struct super_block *sb = inode->i_sb; + struct exfat_sb_info *sbi = EXFAT_SB(sb); + + flags = sbi->debug_flags; + return put_user(flags, (int __user *)arg); + } + case EXFAT_IOC_SET_DEBUGFLAGS: { + struct super_block *sb = inode->i_sb; + struct exfat_sb_info *sbi = EXFAT_SB(sb); + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (get_user(flags, (int __user *) arg)) + return -EFAULT; + + __lock_super(sb); + sbi->debug_flags = flags; + __unlock_super(sb); + + return 0; + } +#endif /* CONFIG_EXFAT_KERNEL_DEBUG */ + default: + return -ENOTTY; /* Inappropriate ioctl for device */ + } +} + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36) +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,35) +static int exfat_file_fsync(struct file *filp, struct dentry *dentry, + int datasync) +#else +static int exfat_file_fsync(struct file *filp, int datasync) +#endif +{ + struct inode *inode = filp->f_mapping->host; + struct super_block *sb = inode->i_sb; + int res, err; + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,35) + res = simple_fsync(filp, dentry, datasync); +#else + res = generic_file_fsync(filp, datasync); +#endif + err = FsSyncVol(sb, 1); + + return res ? res : err; +} +#endif + +const struct file_operations exfat_dir_operations = { + .llseek = generic_file_llseek, + .read = generic_read_dir, +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0) + .iterate = exfat_readdir, +#else + .readdir = exfat_readdir, +#endif +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36) + .ioctl = exfat_generic_ioctl, + .fsync = exfat_file_fsync, +#else + .unlocked_ioctl = exfat_generic_ioctl, + .fsync = generic_file_fsync, +#endif +}; + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,7,00) +static int exfat_create(struct inode *dir, struct dentry *dentry, umode_t mode, + bool excl) +#elif LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0) +static int exfat_create(struct inode *dir, struct dentry *dentry, umode_t mode, + struct nameidata *nd) +#else +static int exfat_create(struct inode *dir, struct dentry *dentry, int mode, + struct nameidata *nd) +#endif +{ + struct super_block *sb = dir->i_sb; + struct inode *inode; + FILE_ID_T fid; + loff_t i_pos; + int err; + + __lock_super(sb); + + DPRINTK("exfat_create entered\n"); + + err = FsCreateFile(dir, (u8 *) dentry->d_name.name, FM_REGULAR, &fid); + if (err) { + if (err == FFS_INVALIDPATH) + err = -EINVAL; + else if (err == FFS_FILEEXIST) + err = -EEXIST; + else if (err == FFS_FULL) + err = -ENOSPC; + else if (err == FFS_NAMETOOLONG) + err = -ENAMETOOLONG; + else + err = -EIO; + goto out; + } + INC_IVERSION(dir); + dir->i_ctime = dir->i_mtime = dir->i_atime = current_time(dir); + if (IS_DIRSYNC(dir)) + (void) exfat_sync_inode(dir); + else + mark_inode_dirty(dir); + + i_pos = ((loff_t) fid.dir.dir << 32) | (fid.entry & 0xffffffff); + + inode = exfat_build_inode(sb, &fid, i_pos); + if (IS_ERR(inode)) { + err = PTR_ERR(inode); + goto out; + } + INC_IVERSION(inode); + inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + /* timestamp is already written, so mark_inode_dirty() is unnecessary. */ + + dentry->d_time = GET_IVERSION(dentry->d_parent->d_inode); + d_instantiate(dentry, inode); + +out: + __unlock_super(sb); + DPRINTK("exfat_create exited\n"); + return err; +} + +static int exfat_find(struct inode *dir, struct qstr *qname, + FILE_ID_T *fid) +{ + int err; + + if (qname->len == 0) + return -ENOENT; + + err = FsLookupFile(dir, (u8 *) qname->name, fid); + if (err) + return -ENOENT; + + return 0; +} + +static int exfat_d_anon_disconn(struct dentry *dentry) +{ + return IS_ROOT(dentry) && (dentry->d_flags & DCACHE_DISCONNECTED); +} + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,7,00) +static struct dentry *exfat_lookup(struct inode *dir, struct dentry *dentry, + unsigned int flags) +#else +static struct dentry *exfat_lookup(struct inode *dir, struct dentry *dentry, + struct nameidata *nd) +#endif +{ + struct super_block *sb = dir->i_sb; + struct inode *inode; + struct dentry *alias; + int err; + FILE_ID_T fid; + loff_t i_pos; + u64 ret; + mode_t i_mode; + + __lock_super(sb); + DPRINTK("exfat_lookup entered\n"); + err = exfat_find(dir, &dentry->d_name, &fid); + if (err) { + if (err == -ENOENT) { + inode = NULL; + goto out; + } + goto error; + } + + i_pos = ((loff_t) fid.dir.dir << 32) | (fid.entry & 0xffffffff); + inode = exfat_build_inode(sb, &fid, i_pos); + if (IS_ERR(inode)) { + err = PTR_ERR(inode); + goto error; + } + + i_mode = inode->i_mode; + if (S_ISLNK(i_mode) && !EXFAT_I(inode)->target) { + EXFAT_I(inode)->target = kmalloc(i_size_read(inode)+1, GFP_KERNEL); + if (!EXFAT_I(inode)->target) { + err = -ENOMEM; + goto error; + } + FsReadFile(dir, &fid, EXFAT_I(inode)->target, i_size_read(inode), &ret); + *(EXFAT_I(inode)->target + i_size_read(inode)) = '\0'; + } + + alias = d_find_alias(inode); + if (alias && !exfat_d_anon_disconn(alias)) { + CHECK_ERR(d_unhashed(alias)); + if (!S_ISDIR(i_mode)) + d_move(alias, dentry); + iput(inode); + __unlock_super(sb); + DPRINTK("exfat_lookup exited 1\n"); + return alias; + } else { + dput(alias); + } +out: + __unlock_super(sb); + dentry->d_time = GET_IVERSION(dentry->d_parent->d_inode); +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38) + dentry->d_op = sb->s_root->d_op; + dentry = d_splice_alias(inode, dentry); + if (dentry) { + dentry->d_op = sb->s_root->d_op; + dentry->d_time = GET_IVERSION(dentry->d_parent->d_inode); + } +#else + dentry = d_splice_alias(inode, dentry); + if (dentry) + dentry->d_time = GET_IVERSION(dentry->d_parent->d_inode); +#endif + DPRINTK("exfat_lookup exited 2\n"); + return dentry; + +error: + __unlock_super(sb); + DPRINTK("exfat_lookup exited 3\n"); + return ERR_PTR(err); +} + +static int exfat_unlink(struct inode *dir, struct dentry *dentry) +{ + struct inode *inode = dentry->d_inode; + struct super_block *sb = dir->i_sb; + int err; + + __lock_super(sb); + + DPRINTK("exfat_unlink entered\n"); + + EXFAT_I(inode)->fid.size = i_size_read(inode); + + err = FsRemoveFile(dir, &(EXFAT_I(inode)->fid)); + if (err) { + if (err == FFS_PERMISSIONERR) + err = -EPERM; + else + err = -EIO; + goto out; + } + INC_IVERSION(dir); + dir->i_mtime = dir->i_atime = current_time(dir); + if (IS_DIRSYNC(dir)) + (void) exfat_sync_inode(dir); + else + mark_inode_dirty(dir); + + clear_nlink(inode); + inode->i_mtime = inode->i_atime = current_time(inode); + exfat_detach(inode); + remove_inode_hash(inode); + +out: + __unlock_super(sb); + DPRINTK("exfat_unlink exited\n"); + return err; +} + +static int exfat_symlink(struct inode *dir, struct dentry *dentry, const char *target) +{ + struct super_block *sb = dir->i_sb; + struct inode *inode; + FILE_ID_T fid; + loff_t i_pos; + int err; + u64 len = (u64) strlen(target); + u64 ret; + + __lock_super(sb); + + DPRINTK("exfat_symlink entered\n"); + + err = FsCreateFile(dir, (u8 *) dentry->d_name.name, FM_SYMLINK, &fid); + if (err) { + if (err == FFS_INVALIDPATH) + err = -EINVAL; + else if (err == FFS_FILEEXIST) + err = -EEXIST; + else if (err == FFS_FULL) + err = -ENOSPC; + else + err = -EIO; + goto out; + } + + err = FsWriteFile(dir, &fid, (char *) target, len, &ret); + + if (err) { + FsRemoveFile(dir, &fid); + + if (err == FFS_FULL) + err = -ENOSPC; + else + err = -EIO; + goto out; + } + + INC_IVERSION(dir); + dir->i_ctime = dir->i_mtime = dir->i_atime = current_time(dir); + if (IS_DIRSYNC(dir)) + (void) exfat_sync_inode(dir); + else + mark_inode_dirty(dir); + + i_pos = ((loff_t) fid.dir.dir << 32) | (fid.entry & 0xffffffff); + + inode = exfat_build_inode(sb, &fid, i_pos); + if (IS_ERR(inode)) { + err = PTR_ERR(inode); + goto out; + } + INC_IVERSION(inode); + inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + /* timestamp is already written, so mark_inode_dirty() is unneeded. */ + + EXFAT_I(inode)->target = kmalloc(len+1, GFP_KERNEL); + if (!EXFAT_I(inode)->target) { + err = -ENOMEM; + goto out; + } + memcpy(EXFAT_I(inode)->target, target, len+1); + + dentry->d_time = GET_IVERSION(dentry->d_parent->d_inode); + d_instantiate(dentry, inode); + +out: + __unlock_super(sb); + DPRINTK("exfat_symlink exited\n"); + return err; +} + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0) +static int exfat_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) +#else +static int exfat_mkdir(struct inode *dir, struct dentry *dentry, int mode) +#endif +{ + struct super_block *sb = dir->i_sb; + struct inode *inode; + FILE_ID_T fid; + loff_t i_pos; + int err; + + __lock_super(sb); + + DPRINTK("exfat_mkdir entered\n"); + + err = FsCreateDir(dir, (u8 *) dentry->d_name.name, &fid); + if (err) { + if (err == FFS_INVALIDPATH) + err = -EINVAL; + else if (err == FFS_FILEEXIST) + err = -EEXIST; + else if (err == FFS_FULL) + err = -ENOSPC; + else if (err == FFS_NAMETOOLONG) + err = -ENAMETOOLONG; + else + err = -EIO; + goto out; + } + INC_IVERSION(dir); + dir->i_ctime = dir->i_mtime = dir->i_atime = current_time(dir); + if (IS_DIRSYNC(dir)) + (void) exfat_sync_inode(dir); + else + mark_inode_dirty(dir); + inc_nlink(dir); + + i_pos = ((loff_t) fid.dir.dir << 32) | (fid.entry & 0xffffffff); + + inode = exfat_build_inode(sb, &fid, i_pos); + if (IS_ERR(inode)) { + err = PTR_ERR(inode); + goto out; + } + INC_IVERSION(inode); + inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + /* timestamp is already written, so mark_inode_dirty() is unneeded. */ + + dentry->d_time = GET_IVERSION(dentry->d_parent->d_inode); + d_instantiate(dentry, inode); + +out: + __unlock_super(sb); + DPRINTK("exfat_mkdir exited\n"); + return err; +} + +static int exfat_rmdir(struct inode *dir, struct dentry *dentry) +{ + struct inode *inode = dentry->d_inode; + struct super_block *sb = dir->i_sb; + int err; + + __lock_super(sb); + + DPRINTK("exfat_rmdir entered\n"); + + EXFAT_I(inode)->fid.size = i_size_read(inode); + + err = FsRemoveDir(dir, &(EXFAT_I(inode)->fid)); + if (err) { + if (err == FFS_INVALIDPATH) + err = -EINVAL; + else if (err == FFS_FILEEXIST) + err = -ENOTEMPTY; + else if (err == FFS_NOTFOUND) + err = -ENOENT; + else if (err == FFS_DIRBUSY) + err = -EBUSY; + else + err = -EIO; + goto out; + } + INC_IVERSION(dir); + dir->i_mtime = dir->i_atime = current_time(dir); + if (IS_DIRSYNC(dir)) + (void) exfat_sync_inode(dir); + else + mark_inode_dirty(dir); + drop_nlink(dir); + + clear_nlink(inode); + inode->i_mtime = inode->i_atime = current_time(inode); + exfat_detach(inode); + remove_inode_hash(inode); + +out: + __unlock_super(sb); + DPRINTK("exfat_rmdir exited\n"); + return err; +} + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,9,0) +static int exfat_rename(struct inode *old_dir, struct dentry *old_dentry, + struct inode *new_dir, struct dentry *new_dentry, + unsigned int flags) +#else +static int exfat_rename(struct inode *old_dir, struct dentry *old_dentry, + struct inode *new_dir, struct dentry *new_dentry) +#endif +{ + struct inode *old_inode, *new_inode; + struct super_block *sb = old_dir->i_sb; + loff_t i_pos; + int err; + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,9,0) + if (flags) + return -EINVAL; +#endif + + __lock_super(sb); + + DPRINTK("exfat_rename entered\n"); + + old_inode = old_dentry->d_inode; + new_inode = new_dentry->d_inode; + + EXFAT_I(old_inode)->fid.size = i_size_read(old_inode); + + err = FsMoveFile(old_dir, &(EXFAT_I(old_inode)->fid), new_dir, new_dentry); + if (err) { + if (err == FFS_PERMISSIONERR) + err = -EPERM; + else if (err == FFS_INVALIDPATH) + err = -EINVAL; + else if (err == FFS_FILEEXIST) + err = -EEXIST; + else if (err == FFS_NOTFOUND) + err = -ENOENT; + else if (err == FFS_FULL) + err = -ENOSPC; + else + err = -EIO; + goto out; + } + INC_IVERSION(new_dir); + new_dir->i_ctime = new_dir->i_mtime = new_dir->i_atime = current_time(new_dir); + if (IS_DIRSYNC(new_dir)) + (void) exfat_sync_inode(new_dir); + else + mark_inode_dirty(new_dir); + + i_pos = ((loff_t) EXFAT_I(old_inode)->fid.dir.dir << 32) | + (EXFAT_I(old_inode)->fid.entry & 0xffffffff); + + exfat_detach(old_inode); + exfat_attach(old_inode, i_pos); + if (IS_DIRSYNC(new_dir)) + (void) exfat_sync_inode(old_inode); + else + mark_inode_dirty(old_inode); + + if ((S_ISDIR(old_inode->i_mode)) && (old_dir != new_dir)) { + drop_nlink(old_dir); + if (!new_inode) + inc_nlink(new_dir); + } + INC_IVERSION(old_dir); + old_dir->i_ctime = old_dir->i_mtime = current_time(old_dir); + if (IS_DIRSYNC(old_dir)) + (void) exfat_sync_inode(old_dir); + else + mark_inode_dirty(old_dir); + + if (new_inode) { + exfat_detach(new_inode); + drop_nlink(new_inode); + if (S_ISDIR(new_inode->i_mode)) + drop_nlink(new_inode); + new_inode->i_ctime = current_time(new_inode); + } + +out: + __unlock_super(sb); + DPRINTK("exfat_rename exited\n"); + return err; +} + +static int exfat_cont_expand(struct inode *inode, loff_t size) +{ + struct address_space *mapping = inode->i_mapping; + loff_t start = i_size_read(inode), count = size - i_size_read(inode); + int err, err2; + + err = generic_cont_expand_simple(inode, size); + if (err != 0) + return err; + + inode->i_ctime = inode->i_mtime = current_time(inode); + mark_inode_dirty(inode); + + if (IS_SYNC(inode)) { + err = filemap_fdatawrite_range(mapping, start, start + count - 1); + err2 = sync_mapping_buffers(mapping); + err = (err) ? (err) : (err2); + err2 = write_inode_now(inode, 1); + err = (err) ? (err) : (err2); + if (!err) +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,32) + err = wait_on_page_writeback_range(mapping, + start >> PAGE_CACHE_SHIFT, + (start + count - 1) >> PAGE_CACHE_SHIFT); +#else + err = filemap_fdatawait_range(mapping, start, start + count - 1); +#endif + } + return err; +} + +static int exfat_allow_set_time(struct exfat_sb_info *sbi, struct inode *inode) +{ + mode_t allow_utime = sbi->options.allow_utime; + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0) + if (!uid_eq(current_fsuid(), inode->i_uid)) +#else + if (current_fsuid() != inode->i_uid) +#endif + { + if (in_group_p(inode->i_gid)) + allow_utime >>= 3; + if (allow_utime & MAY_WRITE) + return 1; + } + + /* use a default check */ + return 0; +} + +static int exfat_sanitize_mode(const struct exfat_sb_info *sbi, + struct inode *inode, umode_t *mode_ptr) +{ + mode_t i_mode, mask, perm; + + i_mode = inode->i_mode; + + if (S_ISREG(i_mode) || S_ISLNK(i_mode)) + mask = sbi->options.fs_fmask; + else + mask = sbi->options.fs_dmask; + + perm = *mode_ptr & ~(S_IFMT | mask); + + /* Of the r and x bits, all (subject to umask) must be present.*/ + if ((perm & (S_IRUGO | S_IXUGO)) != (i_mode & (S_IRUGO|S_IXUGO))) + return -EPERM; + + if (exfat_mode_can_hold_ro(inode)) { + /* Of the w bits, either all (subject to umask) or none must be present. */ + if ((perm & S_IWUGO) && ((perm & S_IWUGO) != (S_IWUGO & ~mask))) + return -EPERM; + } else { + /* If exfat_mode_can_hold_ro(inode) is false, can't change w bits. */ + if ((perm & S_IWUGO) != (S_IWUGO & ~mask)) + return -EPERM; + } + + *mode_ptr &= S_IFMT | perm; + + return 0; +} + +static int exfat_setattr(struct dentry *dentry, struct iattr *attr) +{ + + struct exfat_sb_info *sbi = EXFAT_SB(dentry->d_sb); + struct inode *inode = dentry->d_inode; + unsigned int ia_valid; + int error; +#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,35) + loff_t old_size; +#endif + + DPRINTK("exfat_setattr entered\n"); + + if ((attr->ia_valid & ATTR_SIZE) + && (attr->ia_size > i_size_read(inode))) { + error = exfat_cont_expand(inode, attr->ia_size); + if (error || attr->ia_valid == ATTR_SIZE) + return error; + attr->ia_valid &= ~ATTR_SIZE; + } + + ia_valid = attr->ia_valid; + + if ((ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)) + && exfat_allow_set_time(sbi, inode)) { + attr->ia_valid &= ~(ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET); + } + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,9,0) + error = setattr_prepare(dentry, attr); +#else + error = inode_change_ok(inode, attr); +#endif + attr->ia_valid = ia_valid; + if (error) + return error; + + if (((attr->ia_valid & ATTR_UID) && +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0) + (!uid_eq(attr->ia_uid, sbi->options.fs_uid))) || + ((attr->ia_valid & ATTR_GID) && + (!gid_eq(attr->ia_gid, sbi->options.fs_gid))) || +#else + (attr->ia_uid != sbi->options.fs_uid)) || + ((attr->ia_valid & ATTR_GID) && + (attr->ia_gid != sbi->options.fs_gid)) || +#endif + ((attr->ia_valid & ATTR_MODE) && + (attr->ia_mode & ~(S_IFREG | S_IFLNK | S_IFDIR | S_IRWXUGO)))) { + return -EPERM; + } + + /* + * We don't return -EPERM here. Yes, strange, but this is too + * old behavior. + */ + if (attr->ia_valid & ATTR_MODE) { + if (exfat_sanitize_mode(sbi, inode, &attr->ia_mode) < 0) + attr->ia_valid &= ~ATTR_MODE; + } + + EXFAT_I(inode)->fid.size = i_size_read(inode); + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36) + if (attr->ia_valid) + error = inode_setattr(inode, attr); +#else + if (attr->ia_valid & ATTR_SIZE) { + old_size = i_size_read(inode); +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,00) + down_write(&EXFAT_I(inode)->truncate_lock); + truncate_setsize(inode, attr->ia_size); + _exfat_truncate(inode, old_size); + up_write(&EXFAT_I(inode)->truncate_lock); +#else + truncate_setsize(inode, attr->ia_size); + _exfat_truncate(inode, old_size); +#endif + } + setattr_copy(inode, attr); + mark_inode_dirty(inode); +#endif + + DPRINTK("exfat_setattr exited\n"); + return error; +} + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0) +static int exfat_getattr(const struct path *path, struct kstat *stat, + u32 request_mask, unsigned int flags) +{ + struct inode *inode = path->dentry->d_inode; +#else +static int exfat_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat) +{ + struct inode *inode = dentry->d_inode; +#endif + + DPRINTK("exfat_getattr entered\n"); + + generic_fillattr(inode, stat); + stat->blksize = EXFAT_SB(inode->i_sb)->fs_info.cluster_size; + + DPRINTK("exfat_getattr exited\n"); + return 0; +} + +const struct inode_operations exfat_dir_inode_operations = { + .create = exfat_create, + .lookup = exfat_lookup, + .unlink = exfat_unlink, + .symlink = exfat_symlink, + .mkdir = exfat_mkdir, + .rmdir = exfat_rmdir, + .rename = exfat_rename, + .setattr = exfat_setattr, + .getattr = exfat_getattr, +}; + +/*======================================================================*/ +/* File Operations */ +/*======================================================================*/ +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,5,0) +static const char *exfat_get_link(struct dentry *dentry, struct inode *inode, struct delayed_call *done) +{ + struct exfat_inode_info *ei = EXFAT_I(inode); + if (ei->target != NULL) { + char *cookie = ei->target; + if (cookie != NULL) { + return (char *)(ei->target); + } + } + return NULL; +} +#elif LINUX_VERSION_CODE > KERNEL_VERSION(4,1,0) +static const char *exfat_follow_link(struct dentry *dentry, void **cookie) +{ + struct exfat_inode_info *ei = EXFAT_I(dentry->d_inode); + return *cookie = (char *)(ei->target); +} +#else +static void *exfat_follow_link(struct dentry *dentry, struct nameidata *nd) +{ + struct exfat_inode_info *ei = EXFAT_I(dentry->d_inode); + nd_set_link(nd, (char *)(ei->target)); + return NULL; +} +#endif + +const struct inode_operations exfat_symlink_inode_operations = { + #if LINUX_VERSION_CODE < KERNEL_VERSION(4,10,0) + .readlink = generic_readlink, + #endif + #if LINUX_VERSION_CODE < KERNEL_VERSION(4,5,0) + .follow_link = exfat_follow_link, + #endif + #if LINUX_VERSION_CODE >= KERNEL_VERSION(4,5,0) + .get_link = exfat_get_link, + #endif +}; + +static int exfat_file_release(struct inode *inode, struct file *filp) +{ + struct super_block *sb = inode->i_sb; + + EXFAT_I(inode)->fid.size = i_size_read(inode); + FsSyncVol(sb, 0); + return 0; +} + +const struct file_operations exfat_file_operations = { + .llseek = generic_file_llseek, +#if LINUX_VERSION_CODE < KERNEL_VERSION(3,16,0) + .read = do_sync_read, + .write = do_sync_write, + .aio_read = generic_file_aio_read, + .aio_write = generic_file_aio_write, +#elif LINUX_VERSION_CODE < KERNEL_VERSION(4,1,0) + .read = new_sync_read, + .write = new_sync_write, +#endif +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,16,0) + .read_iter = generic_file_read_iter, + .write_iter = generic_file_write_iter, +#endif + .mmap = generic_file_mmap, + .release = exfat_file_release, +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36) + .ioctl = exfat_generic_ioctl, + .fsync = exfat_file_fsync, +#else + .unlocked_ioctl = exfat_generic_ioctl, + .fsync = generic_file_fsync, +#endif + .splice_read = generic_file_splice_read, +}; + +static void _exfat_truncate(struct inode *inode, loff_t old_size) +{ + struct super_block *sb = inode->i_sb; + struct exfat_sb_info *sbi = EXFAT_SB(sb); + FS_INFO_T *p_fs = &(sbi->fs_info); + int err; + + __lock_super(sb); + + /* + * This protects against truncating a file bigger than it was then + * trying to write into the hole. + */ + if (EXFAT_I(inode)->mmu_private > i_size_read(inode)) + EXFAT_I(inode)->mmu_private = i_size_read(inode); + + if (EXFAT_I(inode)->fid.start_clu == 0) + goto out; + + err = FsTruncateFile(inode, old_size, i_size_read(inode)); + if (err) + goto out; + + inode->i_ctime = inode->i_mtime = current_time(inode); + if (IS_DIRSYNC(inode)) + (void) exfat_sync_inode(inode); + else + mark_inode_dirty(inode); + + inode->i_blocks = ((i_size_read(inode) + (p_fs->cluster_size - 1)) + & ~((loff_t)p_fs->cluster_size - 1)) >> 9; +out: + __unlock_super(sb); +} + +#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,36) +static void exfat_truncate(struct inode *inode) +{ + _exfat_truncate(inode, i_size_read(inode)); +} +#endif + +const struct inode_operations exfat_file_inode_operations = { +#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,36) + .truncate = exfat_truncate, +#endif + .setattr = exfat_setattr, + .getattr = exfat_getattr, +}; + +/*======================================================================*/ +/* Address Space Operations */ +/*======================================================================*/ + +static int exfat_bmap(struct inode *inode, sector_t sector, sector_t *phys, + unsigned long *mapped_blocks, int *create) +{ + struct super_block *sb = inode->i_sb; + struct exfat_sb_info *sbi = EXFAT_SB(sb); + FS_INFO_T *p_fs = &(sbi->fs_info); + BD_INFO_T *p_bd = &(sbi->bd_info); + const unsigned long blocksize = sb->s_blocksize; + const unsigned char blocksize_bits = sb->s_blocksize_bits; + sector_t last_block; + int err, clu_offset, sec_offset; + unsigned int cluster; + + *phys = 0; + *mapped_blocks = 0; + + if ((p_fs->vol_type == FAT12) || (p_fs->vol_type == FAT16)) { + if (inode->i_ino == EXFAT_ROOT_INO) { + if (sector < (p_fs->dentries_in_root >> (p_bd->sector_size_bits-DENTRY_SIZE_BITS))) { + *phys = sector + p_fs->root_start_sector; + *mapped_blocks = 1; + } + return 0; + } + } + + last_block = (i_size_read(inode) + (blocksize - 1)) >> blocksize_bits; + if (sector >= last_block) { + if (*create == 0) + return 0; + } else { + *create = 0; + } + + clu_offset = sector >> p_fs->sectors_per_clu_bits; /* cluster offset */ + sec_offset = sector & (p_fs->sectors_per_clu - 1); /* sector offset in cluster */ + + EXFAT_I(inode)->fid.size = i_size_read(inode); + + err = FsMapCluster(inode, clu_offset, &cluster); + + if (err) { + if (err == FFS_FULL) + return -ENOSPC; + else + return -EIO; + } else if (cluster != CLUSTER_32(~0)) { + *phys = START_SECTOR(cluster) + sec_offset; + *mapped_blocks = p_fs->sectors_per_clu - sec_offset; + } + + return 0; +} + +static int exfat_get_block(struct inode *inode, sector_t iblock, + struct buffer_head *bh_result, int create) +{ + struct super_block *sb = inode->i_sb; + unsigned long max_blocks = bh_result->b_size >> inode->i_blkbits; + int err; + unsigned long mapped_blocks; + sector_t phys; + + __lock_super(sb); + + err = exfat_bmap(inode, iblock, &phys, &mapped_blocks, &create); + if (err) { + __unlock_super(sb); + return err; + } + + if (phys) { + max_blocks = min(mapped_blocks, max_blocks); + if (create) { + EXFAT_I(inode)->mmu_private += max_blocks << sb->s_blocksize_bits; + set_buffer_new(bh_result); + } + map_bh(bh_result, sb, phys); + } + + bh_result->b_size = max_blocks << sb->s_blocksize_bits; + __unlock_super(sb); + + return 0; +} + +static int exfat_readpage(struct file *file, struct page *page) +{ + int ret; + ret = mpage_readpage(page, exfat_get_block); + return ret; +} + +static int exfat_readpages(struct file *file, struct address_space *mapping, + struct list_head *pages, unsigned nr_pages) +{ + int ret; + ret = mpage_readpages(mapping, pages, nr_pages, exfat_get_block); + return ret; +} + +static int exfat_writepage(struct page *page, struct writeback_control *wbc) +{ + int ret; + ret = block_write_full_page(page, exfat_get_block, wbc); + return ret; +} + +static int exfat_writepages(struct address_space *mapping, + struct writeback_control *wbc) +{ + int ret; + ret = mpage_writepages(mapping, wbc, exfat_get_block); + return ret; +} + +#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,34) +static void exfat_write_failed(struct address_space *mapping, loff_t to) +{ + struct inode *inode = mapping->host; + if (to > i_size_read(inode)) { +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0) + truncate_pagecache(inode, i_size_read(inode)); +#else + truncate_pagecache(inode, to, i_size_read(inode)); +#endif + EXFAT_I(inode)->fid.size = i_size_read(inode); + _exfat_truncate(inode, i_size_read(inode)); + } +} +#endif + +static int exfat_write_begin(struct file *file, struct address_space *mapping, + loff_t pos, unsigned len, unsigned flags, + struct page **pagep, void **fsdata) +{ + int ret; + *pagep = NULL; + ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata, + exfat_get_block, + &EXFAT_I(mapping->host)->mmu_private); + +#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,34) + if (ret < 0) + exfat_write_failed(mapping, pos+len); +#endif + return ret; +} + +static int exfat_write_end(struct file *file, struct address_space *mapping, + loff_t pos, unsigned len, unsigned copied, + struct page *pagep, void *fsdata) +{ + struct inode *inode = mapping->host; + FILE_ID_T *fid = &(EXFAT_I(inode)->fid); + int err; + + err = generic_write_end(file, mapping, pos, len, copied, pagep, fsdata); + +#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,34) + if (err < len) + exfat_write_failed(mapping, pos+len); +#endif + + if (!(err < 0) && !(fid->attr & ATTR_ARCHIVE)) { + inode->i_mtime = inode->i_ctime = current_time(inode); + fid->attr |= ATTR_ARCHIVE; + mark_inode_dirty(inode); + } + return err; +} + +#if LINUX_VERSION_CODE < KERNEL_VERSION(3,16,0) +#ifdef CONFIG_AIO_OPTIMIZATION +static ssize_t exfat_direct_IO(int rw, struct kiocb *iocb, + struct iov_iter *iter, loff_t offset) +#else +static ssize_t exfat_direct_IO(int rw, struct kiocb *iocb, + const struct iovec *iov, + loff_t offset, unsigned long nr_segs) +#endif +#elif LINUX_VERSION_CODE < KERNEL_VERSION(4,2,0) +static ssize_t exfat_direct_IO(int rw, struct kiocb *iocb, + struct iov_iter *iter, loff_t offset) +#elif LINUX_VERSION_CODE < KERNEL_VERSION(4,7,0) +static ssize_t exfat_direct_IO(struct kiocb *iocb, + struct iov_iter *iter, loff_t offset) +#else /* >= 4.7.x */ +static ssize_t exfat_direct_IO(struct kiocb *iocb, struct iov_iter *iter) +#endif +{ + struct inode *inode = iocb->ki_filp->f_mapping->host; +#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,34) + struct address_space *mapping = iocb->ki_filp->f_mapping; +#endif + ssize_t ret; +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0) + int rw; + + rw = iov_iter_rw(iter); +#endif + + if (rw == WRITE) { +#if LINUX_VERSION_CODE < KERNEL_VERSION(3,16,0) +#ifdef CONFIG_AIO_OPTIMIZATION + if (EXFAT_I(inode)->mmu_private < + (offset + iov_iter_count(iter))) +#else + if (EXFAT_I(inode)->mmu_private < (offset + iov_length(iov, nr_segs))) +#endif +#elif LINUX_VERSION_CODE < KERNEL_VERSION(4,7,0) + if (EXFAT_I(inode)->mmu_private < (offset + iov_iter_count(iter))) +#else + if (EXFAT_I(inode)->mmu_private < iov_iter_count(iter)) +#endif + return 0; + } +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,7,0) + ret = blockdev_direct_IO(iocb, inode, iter, exfat_get_block); +#elif LINUX_VERSION_CODE >= KERNEL_VERSION(4,1,0) + ret = blockdev_direct_IO(iocb, inode, iter, + offset, exfat_get_block); +#elif LINUX_VERSION_CODE >= KERNEL_VERSION(3,16,0) + ret = blockdev_direct_IO(rw, iocb, inode, iter, + offset, exfat_get_block); +#elif LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0) +#ifdef CONFIG_AIO_OPTIMIZATION + ret = blockdev_direct_IO(rw, iocb, inode, iter, + offset, exfat_get_block); +#else + ret = blockdev_direct_IO(rw, iocb, inode, iov, + offset, nr_segs, exfat_get_block); +#endif +#else + ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov, + offset, nr_segs, exfat_get_block, NULL); +#endif + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,7,0) + if ((ret < 0) && (rw & WRITE)) + exfat_write_failed(mapping, iov_iter_count(iter)); +#elif LINUX_VERSION_CODE >= KERNEL_VERSION(3,16,0) + if ((ret < 0) && (rw & WRITE)) + exfat_write_failed(mapping, offset+iov_iter_count(iter)); +#elif LINUX_VERSION_CODE > KERNEL_VERSION(2,6,34) + if ((ret < 0) && (rw & WRITE)) +#ifdef CONFIG_AIO_OPTIMIZATION + exfat_write_failed(mapping, offset+iov_iter_count(iter)); +#else + exfat_write_failed(mapping, offset+iov_length(iov, nr_segs)); +#endif +#endif + return ret; +} + +static sector_t _exfat_bmap(struct address_space *mapping, sector_t block) +{ + sector_t blocknr; + + /* exfat_get_cluster() assumes the requested blocknr isn't truncated. */ +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,00) + down_read(&EXFAT_I(mapping->host)->truncate_lock); + blocknr = generic_block_bmap(mapping, block, exfat_get_block); + up_read(&EXFAT_I(mapping->host)->truncate_lock); +#else + down_read(&EXFAT_I(mapping->host)->i_alloc_sem); + blocknr = generic_block_bmap(mapping, block, exfat_get_block); + up_read(&EXFAT_I(mapping->host)->i_alloc_sem); +#endif + + return blocknr; +} + +const struct address_space_operations exfat_aops = { + .readpage = exfat_readpage, + .readpages = exfat_readpages, + .writepage = exfat_writepage, + .writepages = exfat_writepages, +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39) + .sync_page = block_sync_page, +#endif + .write_begin = exfat_write_begin, + .write_end = exfat_write_end, + .direct_IO = exfat_direct_IO, + .bmap = _exfat_bmap +}; + +/*======================================================================*/ +/* Super Operations */ +/*======================================================================*/ + +static inline unsigned long exfat_hash(loff_t i_pos) +{ + return hash_32(i_pos, EXFAT_HASH_BITS); +} + +static struct inode *exfat_iget(struct super_block *sb, loff_t i_pos) +{ + struct exfat_sb_info *sbi = EXFAT_SB(sb); + struct exfat_inode_info *info; + struct hlist_head *head = sbi->inode_hashtable + exfat_hash(i_pos); + struct inode *inode = NULL; +#if LINUX_VERSION_CODE < KERNEL_VERSION(3,9,0) + struct hlist_node *node; + + spin_lock(&sbi->inode_hash_lock); + hlist_for_each_entry(info, node, head, i_hash_fat) { +#else + spin_lock(&sbi->inode_hash_lock); + hlist_for_each_entry(info, head, i_hash_fat) { +#endif + CHECK_ERR(info->vfs_inode.i_sb != sb); + + if (i_pos != info->i_pos) + continue; + inode = igrab(&info->vfs_inode); + if (inode) + break; + } + spin_unlock(&sbi->inode_hash_lock); + return inode; +} + +static void exfat_attach(struct inode *inode, loff_t i_pos) +{ + struct exfat_sb_info *sbi = EXFAT_SB(inode->i_sb); + struct hlist_head *head = sbi->inode_hashtable + exfat_hash(i_pos); + + spin_lock(&sbi->inode_hash_lock); + EXFAT_I(inode)->i_pos = i_pos; + hlist_add_head(&EXFAT_I(inode)->i_hash_fat, head); + spin_unlock(&sbi->inode_hash_lock); +} + +static void exfat_detach(struct inode *inode) +{ + struct exfat_sb_info *sbi = EXFAT_SB(inode->i_sb); + + spin_lock(&sbi->inode_hash_lock); + hlist_del_init(&EXFAT_I(inode)->i_hash_fat); + EXFAT_I(inode)->i_pos = 0; + spin_unlock(&sbi->inode_hash_lock); +} + +/* doesn't deal with root inode */ +static int exfat_fill_inode(struct inode *inode, FILE_ID_T *fid) +{ + struct timespec ts; + struct exfat_sb_info *sbi = EXFAT_SB(inode->i_sb); + FS_INFO_T *p_fs = &(sbi->fs_info); + DIR_ENTRY_T info; + + memcpy(&(EXFAT_I(inode)->fid), fid, sizeof(FILE_ID_T)); + + FsReadStat(inode, &info); + + EXFAT_I(inode)->i_pos = 0; + EXFAT_I(inode)->target = NULL; + inode->i_uid = sbi->options.fs_uid; + inode->i_gid = sbi->options.fs_gid; + INC_IVERSION(inode); + inode->i_generation = get_seconds(); + + if (info.Attr & ATTR_SUBDIR) { /* directory */ + inode->i_generation &= ~1; + inode->i_mode = exfat_make_mode(sbi, info.Attr, S_IRWXUGO); + inode->i_op = &exfat_dir_inode_operations; + inode->i_fop = &exfat_dir_operations; + + i_size_write(inode, info.Size); + EXFAT_I(inode)->mmu_private = i_size_read(inode); +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,00) + set_nlink(inode, info.NumSubdirs); +#else + inode->i_nlink = info.NumSubdirs; +#endif + } else if (info.Attr & ATTR_SYMLINK) { /* symbolic link */ + inode->i_generation |= 1; + inode->i_mode = exfat_make_mode(sbi, info.Attr, S_IRWXUGO); + inode->i_op = &exfat_symlink_inode_operations; + + i_size_write(inode, info.Size); + EXFAT_I(inode)->mmu_private = i_size_read(inode); + } else { /* regular file */ + inode->i_generation |= 1; + inode->i_mode = exfat_make_mode(sbi, info.Attr, S_IRWXUGO); + inode->i_op = &exfat_file_inode_operations; + inode->i_fop = &exfat_file_operations; + inode->i_mapping->a_ops = &exfat_aops; + inode->i_mapping->nrpages = 0; + + i_size_write(inode, info.Size); + EXFAT_I(inode)->mmu_private = i_size_read(inode); + } + exfat_save_attr(inode, info.Attr); + + inode->i_blocks = ((i_size_read(inode) + (p_fs->cluster_size - 1)) + & ~((loff_t)p_fs->cluster_size - 1)) >> 9; + + exfat_time_fat2unix(sbi, &ts, &info.ModifyTimestamp); + inode->i_mtime = timespec_to_timespec64(ts); + exfat_time_fat2unix(sbi, &ts, &info.CreateTimestamp); + inode->i_ctime = timespec_to_timespec64(ts); + exfat_time_fat2unix(sbi, &ts, &info.AccessTimestamp); + inode->i_atime = timespec_to_timespec64(ts); + + return 0; +} + +static struct inode *exfat_build_inode(struct super_block *sb, + FILE_ID_T *fid, loff_t i_pos) { + struct inode *inode; + int err; + + inode = exfat_iget(sb, i_pos); + if (inode) + goto out; + inode = new_inode(sb); + if (!inode) { + inode = ERR_PTR(-ENOMEM); + goto out; + } + inode->i_ino = iunique(sb, EXFAT_ROOT_INO); + SET_IVERSION(inode, 1); + err = exfat_fill_inode(inode, fid); + if (err) { + iput(inode); + inode = ERR_PTR(err); + goto out; + } + exfat_attach(inode, i_pos); + insert_inode_hash(inode); +out: + return inode; +} + +static int exfat_sync_inode(struct inode *inode) +{ +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,34) + return exfat_write_inode(inode, 0); +#else + return exfat_write_inode(inode, NULL); +#endif +} + +static struct inode *exfat_alloc_inode(struct super_block *sb) +{ + struct exfat_inode_info *ei; + + ei = kmem_cache_alloc(exfat_inode_cachep, GFP_NOFS); + if (!ei) + return NULL; + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,00) + init_rwsem(&ei->truncate_lock); +#endif + + return &ei->vfs_inode; +} + +static void exfat_destroy_inode(struct inode *inode) +{ + if (EXFAT_I(inode)->target) + kfree(EXFAT_I(inode)->target); + EXFAT_I(inode)->target = NULL; + + kmem_cache_free(exfat_inode_cachep, EXFAT_I(inode)); +} + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,34) +static int exfat_write_inode(struct inode *inode, int wait) +#else +static int exfat_write_inode(struct inode *inode, struct writeback_control *wbc) +#endif +{ + struct timespec ts; + struct super_block *sb = inode->i_sb; + struct exfat_sb_info *sbi = EXFAT_SB(sb); + DIR_ENTRY_T info; + + if (inode->i_ino == EXFAT_ROOT_INO) + return 0; + + info.Attr = exfat_make_attr(inode); + info.Size = i_size_read(inode); + + ts = timespec64_to_timespec(inode->i_mtime); + exfat_time_unix2fat(sbi, &ts, &info.ModifyTimestamp); + ts = timespec64_to_timespec(inode->i_ctime); + exfat_time_unix2fat(sbi, &ts, &info.CreateTimestamp); + ts = timespec64_to_timespec(inode->i_atime); + exfat_time_unix2fat(sbi, &ts, &info.AccessTimestamp); + + FsWriteStat(inode, &info); + + return 0; +} + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36) +static void exfat_delete_inode(struct inode *inode) +{ + truncate_inode_pages(&inode->i_data, 0); + clear_inode(inode); +} + +static void exfat_clear_inode(struct inode *inode) +{ + exfat_detach(inode); + remove_inode_hash(inode); +} +#else +static void exfat_evict_inode(struct inode *inode) +{ + truncate_inode_pages(&inode->i_data, 0); + + if (!inode->i_nlink) + i_size_write(inode, 0); + invalidate_inode_buffers(inode); +#if LINUX_VERSION_CODE < KERNEL_VERSION(3,5,0) + end_writeback(inode); +#else + clear_inode(inode); +#endif + exfat_detach(inode); + + remove_inode_hash(inode); +} +#endif + +static void exfat_free_super(struct exfat_sb_info *sbi) +{ + if (sbi->nls_disk) + unload_nls(sbi->nls_disk); + if (sbi->nls_io) + unload_nls(sbi->nls_io); + if (sbi->options.iocharset != exfat_default_iocharset) + kfree(sbi->options.iocharset); +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,7,0) + /* mutex_init is in exfat_fill_super function. only for 3.7+ */ + mutex_destroy(&sbi->s_lock); +#endif + kfree(sbi); +} + +static void exfat_put_super(struct super_block *sb) +{ + struct exfat_sb_info *sbi = EXFAT_SB(sb); + if (__is_sb_dirty(sb)) + exfat_write_super(sb); + + FsUmountVol(sb); + + sb->s_fs_info = NULL; + exfat_free_super(sbi); +} + +static void exfat_write_super(struct super_block *sb) +{ + __lock_super(sb); + + __set_sb_clean(sb); + + if (!(sb->s_flags & MS_RDONLY)) + FsSyncVol(sb, 1); + + __unlock_super(sb); +} + +static int exfat_sync_fs(struct super_block *sb, int wait) +{ + int err = 0; + + if (__is_sb_dirty(sb)) { + __lock_super(sb); + __set_sb_clean(sb); + err = FsSyncVol(sb, 1); + __unlock_super(sb); + } + + return err; +} + +static int exfat_statfs(struct dentry *dentry, struct kstatfs *buf) +{ + struct super_block *sb = dentry->d_sb; + u64 id = huge_encode_dev(sb->s_bdev->bd_dev); + FS_INFO_T *p_fs = &(EXFAT_SB(sb)->fs_info); + VOL_INFO_T info; + + if (p_fs->used_clusters == (u32) ~0) { + if (FFS_MEDIAERR == FsGetVolInfo(sb, &info)) + return -EIO; + + } else { + info.FatType = p_fs->vol_type; + info.ClusterSize = p_fs->cluster_size; + info.NumClusters = p_fs->num_clusters - 2; + info.UsedClusters = p_fs->used_clusters; + info.FreeClusters = info.NumClusters - info.UsedClusters; + + if (p_fs->dev_ejected) + printk("[EXFAT] statfs on device is ejected\n"); + } + + buf->f_type = sb->s_magic; + buf->f_bsize = info.ClusterSize; + buf->f_blocks = info.NumClusters; + buf->f_bfree = info.FreeClusters; + buf->f_bavail = info.FreeClusters; + buf->f_fsid.val[0] = (u32)id; + buf->f_fsid.val[1] = (u32)(id >> 32); + buf->f_namelen = 260; + + return 0; +} + +static int exfat_remount(struct super_block *sb, int *flags, char *data) +{ + *flags |= MS_NODIRATIME; + return 0; +} + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0) +static int exfat_show_options(struct seq_file *m, struct dentry *root) +{ + struct exfat_sb_info *sbi = EXFAT_SB(root->d_sb); +#else +static int exfat_show_options(struct seq_file *m, struct vfsmount *mnt) +{ + struct exfat_sb_info *sbi = EXFAT_SB(mnt->mnt_sb); +#endif + struct exfat_mount_options *opts = &sbi->options; +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0) + if (__kuid_val(opts->fs_uid)) + seq_printf(m, ",uid=%u", __kuid_val(opts->fs_uid)); + if (__kgid_val(opts->fs_gid)) + seq_printf(m, ",gid=%u", __kgid_val(opts->fs_gid)); +#else + if (opts->fs_uid != 0) + seq_printf(m, ",uid=%u", opts->fs_uid); + if (opts->fs_gid != 0) + seq_printf(m, ",gid=%u", opts->fs_gid); +#endif + seq_printf(m, ",fmask=%04o", opts->fs_fmask); + seq_printf(m, ",dmask=%04o", opts->fs_dmask); + if (opts->allow_utime) + seq_printf(m, ",allow_utime=%04o", opts->allow_utime); + if (sbi->nls_disk) + seq_printf(m, ",codepage=%s", sbi->nls_disk->charset); + if (sbi->nls_io) + seq_printf(m, ",iocharset=%s", sbi->nls_io->charset); + seq_printf(m, ",namecase=%u", opts->casesensitive); + if (opts->errors == EXFAT_ERRORS_CONT) + seq_puts(m, ",errors=continue"); + else if (opts->errors == EXFAT_ERRORS_PANIC) + seq_puts(m, ",errors=panic"); + else + seq_puts(m, ",errors=remount-ro"); +#ifdef CONFIG_EXFAT_DISCARD + if (opts->discard) + seq_printf(m, ",discard"); +#endif + return 0; +} + +const struct super_operations exfat_sops = { + .alloc_inode = exfat_alloc_inode, + .destroy_inode = exfat_destroy_inode, + .write_inode = exfat_write_inode, +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36) + .delete_inode = exfat_delete_inode, + .clear_inode = exfat_clear_inode, +#else + .evict_inode = exfat_evict_inode, +#endif + .put_super = exfat_put_super, +#if LINUX_VERSION_CODE < KERNEL_VERSION(3,7,0) + .write_super = exfat_write_super, +#endif + .sync_fs = exfat_sync_fs, + .statfs = exfat_statfs, + .remount_fs = exfat_remount, + .show_options = exfat_show_options, +}; + +/*======================================================================*/ +/* Export Operations */ +/*======================================================================*/ + +static struct inode *exfat_nfs_get_inode(struct super_block *sb, + u64 ino, u32 generation) +{ + struct inode *inode = NULL; + if (ino < EXFAT_ROOT_INO) + return inode; + inode = ilookup(sb, ino); + + if (inode && generation && (inode->i_generation != generation)) { + iput(inode); + inode = NULL; + } + + return inode; +} + +static struct dentry *exfat_fh_to_dentry(struct super_block *sb, struct fid *fid, + int fh_len, int fh_type) +{ + return generic_fh_to_dentry(sb, fid, fh_len, fh_type, + exfat_nfs_get_inode); +} + +static struct dentry *exfat_fh_to_parent(struct super_block *sb, struct fid *fid, + int fh_len, int fh_type) +{ + return generic_fh_to_parent(sb, fid, fh_len, fh_type, + exfat_nfs_get_inode); +} + +const struct export_operations exfat_export_ops = { + .fh_to_dentry = exfat_fh_to_dentry, + .fh_to_parent = exfat_fh_to_parent, +}; + +/*======================================================================*/ +/* Super Block Read Operations */ +/*======================================================================*/ + +enum { + Opt_uid, + Opt_gid, + Opt_umask, + Opt_dmask, + Opt_fmask, + Opt_allow_utime, + Opt_codepage, + Opt_charset, + Opt_namecase, + Opt_debug, + Opt_err_cont, + Opt_err_panic, + Opt_err_ro, + Opt_utf8_hack, + Opt_err, +#ifdef CONFIG_EXFAT_DISCARD + Opt_discard, +#endif /* EXFAT_CONFIG_DISCARD */ +}; + +static const match_table_t exfat_tokens = { + {Opt_uid, "uid=%u"}, + {Opt_gid, "gid=%u"}, + {Opt_umask, "umask=%o"}, + {Opt_dmask, "dmask=%o"}, + {Opt_fmask, "fmask=%o"}, + {Opt_allow_utime, "allow_utime=%o"}, + {Opt_codepage, "codepage=%u"}, + {Opt_charset, "iocharset=%s"}, + {Opt_namecase, "namecase=%u"}, + {Opt_debug, "debug"}, + {Opt_err_cont, "errors=continue"}, + {Opt_err_panic, "errors=panic"}, + {Opt_err_ro, "errors=remount-ro"}, + {Opt_utf8_hack, "utf8"}, +#ifdef CONFIG_EXFAT_DISCARD + {Opt_discard, "discard"}, +#endif /* CONFIG_EXFAT_DISCARD */ + {Opt_err, NULL} +}; + +static int parse_options(char *options, int silent, int *debug, + struct exfat_mount_options *opts) +{ + char *p; + substring_t args[MAX_OPT_ARGS]; + int option; + char *iocharset; + + opts->fs_uid = current_uid(); + opts->fs_gid = current_gid(); + opts->fs_fmask = opts->fs_dmask = current->fs->umask; + opts->allow_utime = (unsigned short) -1; + opts->codepage = exfat_default_codepage; + opts->iocharset = exfat_default_iocharset; + opts->casesensitive = 0; + opts->errors = EXFAT_ERRORS_RO; +#ifdef CONFIG_EXFAT_DISCARD + opts->discard = 0; +#endif + *debug = 0; + + if (!options) + goto out; + + while ((p = strsep(&options, ",")) != NULL) { + int token; + if (!*p) + continue; + + token = match_token(p, exfat_tokens, args); + switch (token) { + case Opt_uid: + if (match_int(&args[0], &option)) + return 0; +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0) + opts->fs_uid = KUIDT_INIT(option); +#else + opts->fs_uid = option; +#endif + break; + case Opt_gid: + if (match_int(&args[0], &option)) + return 0; +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0) + opts->fs_gid = KGIDT_INIT(option); +#else + opts->fs_gid = option; +#endif + break; + case Opt_umask: + case Opt_dmask: + case Opt_fmask: + if (match_octal(&args[0], &option)) + return 0; + if (token != Opt_dmask) + opts->fs_fmask = option; + if (token != Opt_fmask) + opts->fs_dmask = option; + break; + case Opt_allow_utime: + if (match_octal(&args[0], &option)) + return 0; + opts->allow_utime = option & (S_IWGRP | S_IWOTH); + break; + case Opt_codepage: + if (match_int(&args[0], &option)) + return 0; + opts->codepage = option; + break; + case Opt_charset: + if (opts->iocharset != exfat_default_iocharset) + kfree(opts->iocharset); + iocharset = match_strdup(&args[0]); + if (!iocharset) + return -ENOMEM; + opts->iocharset = iocharset; + break; + case Opt_namecase: + if (match_int(&args[0], &option)) + return 0; + opts->casesensitive = option; + break; + case Opt_err_cont: + opts->errors = EXFAT_ERRORS_CONT; + break; + case Opt_err_panic: + opts->errors = EXFAT_ERRORS_PANIC; + break; + case Opt_err_ro: + opts->errors = EXFAT_ERRORS_RO; + break; + case Opt_debug: + *debug = 1; + break; +#ifdef CONFIG_EXFAT_DISCARD + case Opt_discard: + opts->discard = 1; + break; +#endif /* CONFIG_EXFAT_DISCARD */ + case Opt_utf8_hack: + break; + default: + if (!silent) + printk(KERN_ERR "[EXFAT] Unrecognized mount option %s or missing value\n", p); + return -EINVAL; + } + } + +out: + if (opts->allow_utime == (unsigned short) -1) + opts->allow_utime = ~opts->fs_dmask & (S_IWGRP | S_IWOTH); + + return 0; +} + +static void exfat_hash_init(struct super_block *sb) +{ + struct exfat_sb_info *sbi = EXFAT_SB(sb); + int i; + + spin_lock_init(&sbi->inode_hash_lock); + for (i = 0; i < EXFAT_HASH_SIZE; i++) + INIT_HLIST_HEAD(&sbi->inode_hashtable[i]); +} + +static int exfat_read_root(struct inode *inode) +{ + struct super_block *sb = inode->i_sb; + struct exfat_sb_info *sbi = EXFAT_SB(sb); + FS_INFO_T *p_fs = &(sbi->fs_info); + DIR_ENTRY_T info; + + EXFAT_I(inode)->fid.dir.dir = p_fs->root_dir; + EXFAT_I(inode)->fid.dir.flags = 0x01; + EXFAT_I(inode)->fid.entry = -1; + EXFAT_I(inode)->fid.start_clu = p_fs->root_dir; + EXFAT_I(inode)->fid.flags = 0x01; + EXFAT_I(inode)->fid.type = TYPE_DIR; + EXFAT_I(inode)->fid.rwoffset = 0; + EXFAT_I(inode)->fid.hint_last_off = -1; + + EXFAT_I(inode)->target = NULL; + + FsReadStat(inode, &info); + + inode->i_uid = sbi->options.fs_uid; + inode->i_gid = sbi->options.fs_gid; + INC_IVERSION(inode); + inode->i_generation = 0; + inode->i_mode = exfat_make_mode(sbi, ATTR_SUBDIR, S_IRWXUGO); + inode->i_op = &exfat_dir_inode_operations; + inode->i_fop = &exfat_dir_operations; + + i_size_write(inode, info.Size); + inode->i_blocks = ((i_size_read(inode) + (p_fs->cluster_size - 1)) + & ~((loff_t)p_fs->cluster_size - 1)) >> 9; + EXFAT_I(inode)->i_pos = ((loff_t) p_fs->root_dir << 32) | 0xffffffff; + EXFAT_I(inode)->mmu_private = i_size_read(inode); + + exfat_save_attr(inode, ATTR_SUBDIR); + inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,00) + set_nlink(inode, info.NumSubdirs + 2); +#else + inode->i_nlink = info.NumSubdirs + 2; +#endif + + return 0; +} + +#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,37) +static void setup_dops(struct super_block *sb) +{ + if (EXFAT_SB(sb)->options.casesensitive == 0) + sb->s_d_op = &exfat_ci_dentry_ops; + else + sb->s_d_op = &exfat_dentry_ops; +} +#endif + +static int exfat_fill_super(struct super_block *sb, void *data, int silent) +{ + struct inode *root_inode = NULL; + struct exfat_sb_info *sbi; + int debug, ret; + long error; + char buf[50]; + + /* + * GFP_KERNEL is ok here, because while we do hold the + * supeblock lock, memory pressure can't call back into + * the filesystem, since we're only just about to mount + * it and have no inodes etc active! + */ + sbi = kzalloc(sizeof(struct exfat_sb_info), GFP_KERNEL); + if (!sbi) + return -ENOMEM; +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,7,0) + mutex_init(&sbi->s_lock); +#endif + sb->s_fs_info = sbi; + sb->s_flags |= MS_NODIRATIME; + sb->s_magic = EXFAT_SUPER_MAGIC; + sb->s_op = &exfat_sops; + sb->s_export_op = &exfat_export_ops; + + error = parse_options(data, silent, &debug, &sbi->options); + if (error) + goto out_fail; + +#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,37) + setup_dops(sb); +#endif + + error = -EIO; + sb_min_blocksize(sb, 512); + sb->s_maxbytes = 0x7fffffffffffffffLL; /* maximum file size */ + + ret = FsMountVol(sb); + if (ret) { + if (!silent) + printk(KERN_ERR "[EXFAT] FsMountVol failed\n"); + + goto out_fail; + } + + /* set up enough so that it can read an inode */ + exfat_hash_init(sb); + + /* + * The low byte of FAT's first entry must have same value with + * media-field. But in real world, too many devices is + * writing wrong value. So, removed that validity check. + * + * if (FAT_FIRST_ENT(sb, media) != first) + */ + + /* codepage is not meaningful in exfat */ + if (sbi->fs_info.vol_type != EXFAT) { + error = -EINVAL; + sprintf(buf, "cp%d", sbi->options.codepage); + sbi->nls_disk = load_nls(buf); + if (!sbi->nls_disk) { + printk(KERN_ERR "[EXFAT] Codepage %s not found\n", buf); + goto out_fail2; + } + } + + sbi->nls_io = load_nls(sbi->options.iocharset); + + error = -ENOMEM; + root_inode = new_inode(sb); + if (!root_inode) + goto out_fail2; + root_inode->i_ino = EXFAT_ROOT_INO; + SET_IVERSION(root_inode, 1); + + error = exfat_read_root(root_inode); + if (error < 0) + goto out_fail2; + error = -ENOMEM; + exfat_attach(root_inode, EXFAT_I(root_inode)->i_pos); + insert_inode_hash(root_inode); +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,00) + sb->s_root = d_make_root(root_inode); +#else + sb->s_root = d_alloc_root(root_inode); +#endif + if (!sb->s_root) { + printk(KERN_ERR "[EXFAT] Getting the root inode failed\n"); + goto out_fail2; + } + + return 0; + +out_fail2: + FsUmountVol(sb); +out_fail: + if (root_inode) + iput(root_inode); + sb->s_fs_info = NULL; + exfat_free_super(sbi); + return error; +} +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37) +static int exfat_get_sb(struct file_system_type *fs_type, + int flags, const char *dev_name, + void *data, struct vfsmount *mnt) +{ + return get_sb_bdev(fs_type, flags, dev_name, data, exfat_fill_super, mnt); +} +#else +static struct dentry *exfat_fs_mount(struct file_system_type *fs_type, + int flags, const char *dev_name, + void *data) { + return mount_bdev(fs_type, flags, dev_name, data, exfat_fill_super); +} +#endif + +static void init_once(void *foo) +{ + struct exfat_inode_info *ei = (struct exfat_inode_info *)foo; + + INIT_HLIST_NODE(&ei->i_hash_fat); + inode_init_once(&ei->vfs_inode); +} + +static int __init exfat_init_inodecache(void) +{ + exfat_inode_cachep = kmem_cache_create("exfat_inode_cache", + sizeof(struct exfat_inode_info), + 0, (SLAB_RECLAIM_ACCOUNT| + SLAB_MEM_SPREAD), + init_once); + if (exfat_inode_cachep == NULL) + return -ENOMEM; + return 0; +} + +static void __exit exfat_destroy_inodecache(void) +{ +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0) + /* + * Make sure all delayed rcu free inodes are flushed before we + * destroy cache. + */ + rcu_barrier(); +#endif + kmem_cache_destroy(exfat_inode_cachep); +} + +#ifdef CONFIG_EXFAT_KERNEL_DEBUG +static void exfat_debug_kill_sb(struct super_block *sb) +{ + struct exfat_sb_info *sbi = EXFAT_SB(sb); + struct block_device *bdev = sb->s_bdev; + + long flags; + + if (sbi) { + flags = sbi->debug_flags; + + if (flags & EXFAT_DEBUGFLAGS_INVALID_UMOUNT) { + /* invalidate_bdev drops all device cache include dirty. + we use this to simulate device removal */ + FsReleaseCache(sb); + invalidate_bdev(bdev); + } + } + + kill_block_super(sb); +} +#endif /* CONFIG_EXFAT_KERNEL_DEBUG */ + +static struct file_system_type exfat_fs_type = { + .owner = THIS_MODULE, +#if defined(CONFIG_MACH_LGE) || defined(CONFIG_HTC_BATT_CORE) + .name = "texfat", +#else + .name = "exfat", +#endif +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37) + .get_sb = exfat_get_sb, +#else + .mount = exfat_fs_mount, +#endif +#ifdef CONFIG_EXFAT_KERNEL_DEBUG + .kill_sb = exfat_debug_kill_sb, +#else + .kill_sb = kill_block_super, +#endif /* CONFIG_EXFAT_KERNEL_DEBUG */ + .fs_flags = FS_REQUIRES_DEV, +}; + +static int __init init_exfat(void) +{ + int err; + + err = FsInit(); + if (err) { + if (err == FFS_MEMORYERR) + return -ENOMEM; + else + return -EIO; + } + + printk(KERN_INFO "exFAT: Version %s\n", EXFAT_VERSION); + + err = exfat_init_inodecache(); + if (err) + goto out; + + err = register_filesystem(&exfat_fs_type); + if (err) + goto out; + + return 0; +out: + FsShutdown(); + return err; +} + +static void __exit exit_exfat(void) +{ + exfat_destroy_inodecache(); + unregister_filesystem(&exfat_fs_type); + FsShutdown(); +} + +module_init(init_exfat); +module_exit(exit_exfat); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("exFAT Filesystem Driver"); +#ifdef MODULE_ALIAS_FS +#if defined(CONFIG_MACH_LGE) || defined(CONFIG_HTC_BATT_CORE) +MODULE_ALIAS_FS("texfat"); +#else +MODULE_ALIAS_FS("exfat"); +#endif +#endif \ No newline at end of file diff --git a/fs/exfat/exfat_super.h b/fs/exfat/exfat_super.h new file mode 100644 index 00000000000..916811e3d31 --- /dev/null +++ b/fs/exfat/exfat_super.h @@ -0,0 +1,171 @@ +/* Some of the source code in this file came from "linux/fs/fat/fat.h". */ + +/* + * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#ifndef _EXFAT_LINUX_H +#define _EXFAT_LINUX_H + +#include +#include +#include +#include +#include +#include + +#include "exfat_config.h" +#include "exfat_data.h" +#include "exfat_oal.h" + +#include "exfat_blkdev.h" +#include "exfat_cache.h" +#include "exfat_nls.h" +#include "exfat_api.h" +#include "exfat_core.h" + +#define EXFAT_ERRORS_CONT 1 /* ignore error and continue */ +#define EXFAT_ERRORS_PANIC 2 /* panic on error */ +#define EXFAT_ERRORS_RO 3 /* remount r/o on error */ + +/* ioctl command */ +#define EXFAT_IOCTL_GET_VOLUME_ID _IOR('r', 0x12, __u32) + +struct exfat_mount_options { +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0) + kuid_t fs_uid; + kgid_t fs_gid; +#else + uid_t fs_uid; + gid_t fs_gid; +#endif + unsigned short fs_fmask; + unsigned short fs_dmask; + unsigned short allow_utime; /* permission for setting the [am]time */ + unsigned short codepage; /* codepage for shortname conversions */ + char *iocharset; /* charset for filename input/display */ + unsigned char casesensitive; + unsigned char errors; /* on error: continue, panic, remount-ro */ +#ifdef CONFIG_EXFAT_DISCARD + unsigned char discard; /* flag on if -o dicard specified and device support discard() */ +#endif /* CONFIG_EXFAT_DISCARD */ +}; + +#define EXFAT_HASH_BITS 8 +#define EXFAT_HASH_SIZE (1UL << EXFAT_HASH_BITS) + +/* + * EXFAT file system in-core superblock data + */ +struct exfat_sb_info { + FS_INFO_T fs_info; + BD_INFO_T bd_info; + + struct exfat_mount_options options; + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,7,00) + int s_dirt; + struct mutex s_lock; +#endif + struct nls_table *nls_disk; /* Codepage used on disk */ + struct nls_table *nls_io; /* Charset used for input and display */ + + struct inode *fat_inode; + + spinlock_t inode_hash_lock; + struct hlist_head inode_hashtable[EXFAT_HASH_SIZE]; +#ifdef CONFIG_EXFAT_KERNEL_DEBUG + long debug_flags; +#endif /* CONFIG_EXFAT_KERNEL_DEBUG */ +}; + +/* + * EXFAT file system inode data in memory + */ +struct exfat_inode_info { + FILE_ID_T fid; + char *target; + /* NOTE: mmu_private is 64bits, so must hold ->i_mutex to access */ + loff_t mmu_private; /* physically allocated size */ + loff_t i_pos; /* on-disk position of directory entry or 0 */ + struct hlist_node i_hash_fat; /* hash by i_location */ +#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,00) + struct rw_semaphore truncate_lock; +#endif + struct inode vfs_inode; + struct rw_semaphore i_alloc_sem; /* protect bmap against truncate */ +}; + +#define EXFAT_SB(sb) ((struct exfat_sb_info *)((sb)->s_fs_info)) + +static inline struct exfat_inode_info *EXFAT_I(struct inode *inode) +{ + return container_of(inode, struct exfat_inode_info, vfs_inode); +} + +/* + * If ->i_mode can't hold S_IWUGO (i.e. ATTR_RO), we use ->i_attrs to + * save ATTR_RO instead of ->i_mode. + * + * If it's directory and !sbi->options.rodir, ATTR_RO isn't read-only + * bit, it's just used as flag for app. + */ +static inline int exfat_mode_can_hold_ro(struct inode *inode) +{ + struct exfat_sb_info *sbi = EXFAT_SB(inode->i_sb); + + if (S_ISDIR(inode->i_mode)) + return 0; + + if ((~sbi->options.fs_fmask) & S_IWUGO) + return 1; + return 0; +} + +/* Convert attribute bits and a mask to the UNIX mode. */ +static inline mode_t exfat_make_mode(struct exfat_sb_info *sbi, + u32 attr, mode_t mode) +{ + if ((attr & ATTR_READONLY) && !(attr & ATTR_SUBDIR)) + mode &= ~S_IWUGO; + + if (attr & ATTR_SUBDIR) + return (mode & ~sbi->options.fs_dmask) | S_IFDIR; + else if (attr & ATTR_SYMLINK) + return (mode & ~sbi->options.fs_dmask) | S_IFLNK; + else + return (mode & ~sbi->options.fs_fmask) | S_IFREG; +} + +/* Return the FAT attribute byte for this inode */ +static inline u32 exfat_make_attr(struct inode *inode) +{ + if (exfat_mode_can_hold_ro(inode) && !(inode->i_mode & S_IWUGO)) + return (EXFAT_I(inode)->fid.attr) | ATTR_READONLY; + else + return EXFAT_I(inode)->fid.attr; +} + +static inline void exfat_save_attr(struct inode *inode, u32 attr) +{ + if (exfat_mode_can_hold_ro(inode)) + EXFAT_I(inode)->fid.attr = attr & ATTR_RWMASK; + else + EXFAT_I(inode)->fid.attr = attr & (ATTR_RWMASK | ATTR_READONLY); +} + +#endif /* _EXFAT_LINUX_H */ diff --git a/fs/exfat/exfat_upcase.c b/fs/exfat/exfat_upcase.c new file mode 100644 index 00000000000..3807f37caac --- /dev/null +++ b/fs/exfat/exfat_upcase.c @@ -0,0 +1,405 @@ +/* + * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/************************************************************************/ +/* */ +/* PROJECT : exFAT & FAT12/16/32 File System */ +/* FILE : exfat_upcase.c */ +/* PURPOSE : exFAT Up-case Table */ +/* */ +/*----------------------------------------------------------------------*/ +/* NOTES */ +/* */ +/*----------------------------------------------------------------------*/ +/* REVISION HISTORY (Ver 0.9) */ +/* */ +/* - 2010.11.15 [Joosun Hahn] : first writing */ +/* */ +/************************************************************************/ + +#include "exfat_config.h" + +#include "exfat_nls.h" + +const u8 uni_upcase[NUM_UPCASE<<1] = { + 0x00, 0x00, 0x01, 0x00, 0x02, 0x00, 0x03, 0x00, 0x04, 0x00, 0x05, 0x00, 0x06, 0x00, 0x07, 0x00, + 0x08, 0x00, 0x09, 0x00, 0x0A, 0x00, 0x0B, 0x00, 0x0C, 0x00, 0x0D, 0x00, 0x0E, 0x00, 0x0F, 0x00, + 0x10, 0x00, 0x11, 0x00, 0x12, 0x00, 0x13, 0x00, 0x14, 0x00, 0x15, 0x00, 0x16, 0x00, 0x17, 0x00, + 0x18, 0x00, 0x19, 0x00, 0x1A, 0x00, 0x1B, 0x00, 0x1C, 0x00, 0x1D, 0x00, 0x1E, 0x00, 0x1F, 0x00, + 0x20, 0x00, 0x21, 0x00, 0x22, 0x00, 0x23, 0x00, 0x24, 0x00, 0x25, 0x00, 0x26, 0x00, 0x27, 0x00, + 0x28, 0x00, 0x29, 0x00, 0x2A, 0x00, 0x2B, 0x00, 0x2C, 0x00, 0x2D, 0x00, 0x2E, 0x00, 0x2F, 0x00, + 0x30, 0x00, 0x31, 0x00, 0x32, 0x00, 0x33, 0x00, 0x34, 0x00, 0x35, 0x00, 0x36, 0x00, 0x37, 0x00, + 0x38, 0x00, 0x39, 0x00, 0x3A, 0x00, 0x3B, 0x00, 0x3C, 0x00, 0x3D, 0x00, 0x3E, 0x00, 0x3F, 0x00, + 0x40, 0x00, 0x41, 0x00, 0x42, 0x00, 0x43, 0x00, 0x44, 0x00, 0x45, 0x00, 0x46, 0x00, 0x47, 0x00, + 0x48, 0x00, 0x49, 0x00, 0x4A, 0x00, 0x4B, 0x00, 0x4C, 0x00, 0x4D, 0x00, 0x4E, 0x00, 0x4F, 0x00, + 0x50, 0x00, 0x51, 0x00, 0x52, 0x00, 0x53, 0x00, 0x54, 0x00, 0x55, 0x00, 0x56, 0x00, 0x57, 0x00, + 0x58, 0x00, 0x59, 0x00, 0x5A, 0x00, 0x5B, 0x00, 0x5C, 0x00, 0x5D, 0x00, 0x5E, 0x00, 0x5F, 0x00, + 0x60, 0x00, 0x41, 0x00, 0x42, 0x00, 0x43, 0x00, 0x44, 0x00, 0x45, 0x00, 0x46, 0x00, 0x47, 0x00, + 0x48, 0x00, 0x49, 0x00, 0x4A, 0x00, 0x4B, 0x00, 0x4C, 0x00, 0x4D, 0x00, 0x4E, 0x00, 0x4F, 0x00, + 0x50, 0x00, 0x51, 0x00, 0x52, 0x00, 0x53, 0x00, 0x54, 0x00, 0x55, 0x00, 0x56, 0x00, 0x57, 0x00, + 0x58, 0x00, 0x59, 0x00, 0x5A, 0x00, 0x7B, 0x00, 0x7C, 0x00, 0x7D, 0x00, 0x7E, 0x00, 0x7F, 0x00, + 0x80, 0x00, 0x81, 0x00, 0x82, 0x00, 0x83, 0x00, 0x84, 0x00, 0x85, 0x00, 0x86, 0x00, 0x87, 0x00, + 0x88, 0x00, 0x89, 0x00, 0x8A, 0x00, 0x8B, 0x00, 0x8C, 0x00, 0x8D, 0x00, 0x8E, 0x00, 0x8F, 0x00, + 0x90, 0x00, 0x91, 0x00, 0x92, 0x00, 0x93, 0x00, 0x94, 0x00, 0x95, 0x00, 0x96, 0x00, 0x97, 0x00, + 0x98, 0x00, 0x99, 0x00, 0x9A, 0x00, 0x9B, 0x00, 0x9C, 0x00, 0x9D, 0x00, 0x9E, 0x00, 0x9F, 0x00, + 0xA0, 0x00, 0xA1, 0x00, 0xA2, 0x00, 0xA3, 0x00, 0xA4, 0x00, 0xA5, 0x00, 0xA6, 0x00, 0xA7, 0x00, + 0xA8, 0x00, 0xA9, 0x00, 0xAA, 0x00, 0xAB, 0x00, 0xAC, 0x00, 0xAD, 0x00, 0xAE, 0x00, 0xAF, 0x00, + 0xB0, 0x00, 0xB1, 0x00, 0xB2, 0x00, 0xB3, 0x00, 0xB4, 0x00, 0xB5, 0x00, 0xB6, 0x00, 0xB7, 0x00, + 0xB8, 0x00, 0xB9, 0x00, 0xBA, 0x00, 0xBB, 0x00, 0xBC, 0x00, 0xBD, 0x00, 0xBE, 0x00, 0xBF, 0x00, + 0xC0, 0x00, 0xC1, 0x00, 0xC2, 0x00, 0xC3, 0x00, 0xC4, 0x00, 0xC5, 0x00, 0xC6, 0x00, 0xC7, 0x00, + 0xC8, 0x00, 0xC9, 0x00, 0xCA, 0x00, 0xCB, 0x00, 0xCC, 0x00, 0xCD, 0x00, 0xCE, 0x00, 0xCF, 0x00, + 0xD0, 0x00, 0xD1, 0x00, 0xD2, 0x00, 0xD3, 0x00, 0xD4, 0x00, 0xD5, 0x00, 0xD6, 0x00, 0xD7, 0x00, + 0xD8, 0x00, 0xD9, 0x00, 0xDA, 0x00, 0xDB, 0x00, 0xDC, 0x00, 0xDD, 0x00, 0xDE, 0x00, 0xDF, 0x00, + 0xC0, 0x00, 0xC1, 0x00, 0xC2, 0x00, 0xC3, 0x00, 0xC4, 0x00, 0xC5, 0x00, 0xC6, 0x00, 0xC7, 0x00, + 0xC8, 0x00, 0xC9, 0x00, 0xCA, 0x00, 0xCB, 0x00, 0xCC, 0x00, 0xCD, 0x00, 0xCE, 0x00, 0xCF, 0x00, + 0xD0, 0x00, 0xD1, 0x00, 0xD2, 0x00, 0xD3, 0x00, 0xD4, 0x00, 0xD5, 0x00, 0xD6, 0x00, 0xF7, 0x00, + 0xD8, 0x00, 0xD9, 0x00, 0xDA, 0x00, 0xDB, 0x00, 0xDC, 0x00, 0xDD, 0x00, 0xDE, 0x00, 0x78, 0x01, + 0x00, 0x01, 0x00, 0x01, 0x02, 0x01, 0x02, 0x01, 0x04, 0x01, 0x04, 0x01, 0x06, 0x01, 0x06, 0x01, + 0x08, 0x01, 0x08, 0x01, 0x0A, 0x01, 0x0A, 0x01, 0x0C, 0x01, 0x0C, 0x01, 0x0E, 0x01, 0x0E, 0x01, + 0x10, 0x01, 0x10, 0x01, 0x12, 0x01, 0x12, 0x01, 0x14, 0x01, 0x14, 0x01, 0x16, 0x01, 0x16, 0x01, + 0x18, 0x01, 0x18, 0x01, 0x1A, 0x01, 0x1A, 0x01, 0x1C, 0x01, 0x1C, 0x01, 0x1E, 0x01, 0x1E, 0x01, + 0x20, 0x01, 0x20, 0x01, 0x22, 0x01, 0x22, 0x01, 0x24, 0x01, 0x24, 0x01, 0x26, 0x01, 0x26, 0x01, + 0x28, 0x01, 0x28, 0x01, 0x2A, 0x01, 0x2A, 0x01, 0x2C, 0x01, 0x2C, 0x01, 0x2E, 0x01, 0x2E, 0x01, + 0x30, 0x01, 0x31, 0x01, 0x32, 0x01, 0x32, 0x01, 0x34, 0x01, 0x34, 0x01, 0x36, 0x01, 0x36, 0x01, + 0x38, 0x01, 0x39, 0x01, 0x39, 0x01, 0x3B, 0x01, 0x3B, 0x01, 0x3D, 0x01, 0x3D, 0x01, 0x3F, 0x01, + 0x3F, 0x01, 0x41, 0x01, 0x41, 0x01, 0x43, 0x01, 0x43, 0x01, 0x45, 0x01, 0x45, 0x01, 0x47, 0x01, + 0x47, 0x01, 0x49, 0x01, 0x4A, 0x01, 0x4A, 0x01, 0x4C, 0x01, 0x4C, 0x01, 0x4E, 0x01, 0x4E, 0x01, + 0x50, 0x01, 0x50, 0x01, 0x52, 0x01, 0x52, 0x01, 0x54, 0x01, 0x54, 0x01, 0x56, 0x01, 0x56, 0x01, + 0x58, 0x01, 0x58, 0x01, 0x5A, 0x01, 0x5A, 0x01, 0x5C, 0x01, 0x5C, 0x01, 0x5E, 0x01, 0x5E, 0x01, + 0x60, 0x01, 0x60, 0x01, 0x62, 0x01, 0x62, 0x01, 0x64, 0x01, 0x64, 0x01, 0x66, 0x01, 0x66, 0x01, + 0x68, 0x01, 0x68, 0x01, 0x6A, 0x01, 0x6A, 0x01, 0x6C, 0x01, 0x6C, 0x01, 0x6E, 0x01, 0x6E, 0x01, + 0x70, 0x01, 0x70, 0x01, 0x72, 0x01, 0x72, 0x01, 0x74, 0x01, 0x74, 0x01, 0x76, 0x01, 0x76, 0x01, + 0x78, 0x01, 0x79, 0x01, 0x79, 0x01, 0x7B, 0x01, 0x7B, 0x01, 0x7D, 0x01, 0x7D, 0x01, 0x7F, 0x01, + 0x43, 0x02, 0x81, 0x01, 0x82, 0x01, 0x82, 0x01, 0x84, 0x01, 0x84, 0x01, 0x86, 0x01, 0x87, 0x01, + 0x87, 0x01, 0x89, 0x01, 0x8A, 0x01, 0x8B, 0x01, 0x8B, 0x01, 0x8D, 0x01, 0x8E, 0x01, 0x8F, 0x01, + 0x90, 0x01, 0x91, 0x01, 0x91, 0x01, 0x93, 0x01, 0x94, 0x01, 0xF6, 0x01, 0x96, 0x01, 0x97, 0x01, + 0x98, 0x01, 0x98, 0x01, 0x3D, 0x02, 0x9B, 0x01, 0x9C, 0x01, 0x9D, 0x01, 0x20, 0x02, 0x9F, 0x01, + 0xA0, 0x01, 0xA0, 0x01, 0xA2, 0x01, 0xA2, 0x01, 0xA4, 0x01, 0xA4, 0x01, 0xA6, 0x01, 0xA7, 0x01, + 0xA7, 0x01, 0xA9, 0x01, 0xAA, 0x01, 0xAB, 0x01, 0xAC, 0x01, 0xAC, 0x01, 0xAE, 0x01, 0xAF, 0x01, + 0xAF, 0x01, 0xB1, 0x01, 0xB2, 0x01, 0xB3, 0x01, 0xB3, 0x01, 0xB5, 0x01, 0xB5, 0x01, 0xB7, 0x01, + 0xB8, 0x01, 0xB8, 0x01, 0xBA, 0x01, 0xBB, 0x01, 0xBC, 0x01, 0xBC, 0x01, 0xBE, 0x01, 0xF7, 0x01, + 0xC0, 0x01, 0xC1, 0x01, 0xC2, 0x01, 0xC3, 0x01, 0xC4, 0x01, 0xC5, 0x01, 0xC4, 0x01, 0xC7, 0x01, + 0xC8, 0x01, 0xC7, 0x01, 0xCA, 0x01, 0xCB, 0x01, 0xCA, 0x01, 0xCD, 0x01, 0xCD, 0x01, 0xCF, 0x01, + 0xCF, 0x01, 0xD1, 0x01, 0xD1, 0x01, 0xD3, 0x01, 0xD3, 0x01, 0xD5, 0x01, 0xD5, 0x01, 0xD7, 0x01, + 0xD7, 0x01, 0xD9, 0x01, 0xD9, 0x01, 0xDB, 0x01, 0xDB, 0x01, 0x8E, 0x01, 0xDE, 0x01, 0xDE, 0x01, + 0xE0, 0x01, 0xE0, 0x01, 0xE2, 0x01, 0xE2, 0x01, 0xE4, 0x01, 0xE4, 0x01, 0xE6, 0x01, 0xE6, 0x01, + 0xE8, 0x01, 0xE8, 0x01, 0xEA, 0x01, 0xEA, 0x01, 0xEC, 0x01, 0xEC, 0x01, 0xEE, 0x01, 0xEE, 0x01, + 0xF0, 0x01, 0xF1, 0x01, 0xF2, 0x01, 0xF1, 0x01, 0xF4, 0x01, 0xF4, 0x01, 0xF6, 0x01, 0xF7, 0x01, + 0xF8, 0x01, 0xF8, 0x01, 0xFA, 0x01, 0xFA, 0x01, 0xFC, 0x01, 0xFC, 0x01, 0xFE, 0x01, 0xFE, 0x01, + 0x00, 0x02, 0x00, 0x02, 0x02, 0x02, 0x02, 0x02, 0x04, 0x02, 0x04, 0x02, 0x06, 0x02, 0x06, 0x02, + 0x08, 0x02, 0x08, 0x02, 0x0A, 0x02, 0x0A, 0x02, 0x0C, 0x02, 0x0C, 0x02, 0x0E, 0x02, 0x0E, 0x02, + 0x10, 0x02, 0x10, 0x02, 0x12, 0x02, 0x12, 0x02, 0x14, 0x02, 0x14, 0x02, 0x16, 0x02, 0x16, 0x02, + 0x18, 0x02, 0x18, 0x02, 0x1A, 0x02, 0x1A, 0x02, 0x1C, 0x02, 0x1C, 0x02, 0x1E, 0x02, 0x1E, 0x02, + 0x20, 0x02, 0x21, 0x02, 0x22, 0x02, 0x22, 0x02, 0x24, 0x02, 0x24, 0x02, 0x26, 0x02, 0x26, 0x02, + 0x28, 0x02, 0x28, 0x02, 0x2A, 0x02, 0x2A, 0x02, 0x2C, 0x02, 0x2C, 0x02, 0x2E, 0x02, 0x2E, 0x02, + 0x30, 0x02, 0x30, 0x02, 0x32, 0x02, 0x32, 0x02, 0x34, 0x02, 0x35, 0x02, 0x36, 0x02, 0x37, 0x02, + 0x38, 0x02, 0x39, 0x02, 0x65, 0x2C, 0x3B, 0x02, 0x3B, 0x02, 0x3D, 0x02, 0x66, 0x2C, 0x3F, 0x02, + 0x40, 0x02, 0x41, 0x02, 0x41, 0x02, 0x43, 0x02, 0x44, 0x02, 0x45, 0x02, 0x46, 0x02, 0x46, 0x02, + 0x48, 0x02, 0x48, 0x02, 0x4A, 0x02, 0x4A, 0x02, 0x4C, 0x02, 0x4C, 0x02, 0x4E, 0x02, 0x4E, 0x02, + 0x50, 0x02, 0x51, 0x02, 0x52, 0x02, 0x81, 0x01, 0x86, 0x01, 0x55, 0x02, 0x89, 0x01, 0x8A, 0x01, + 0x58, 0x02, 0x8F, 0x01, 0x5A, 0x02, 0x90, 0x01, 0x5C, 0x02, 0x5D, 0x02, 0x5E, 0x02, 0x5F, 0x02, + 0x93, 0x01, 0x61, 0x02, 0x62, 0x02, 0x94, 0x01, 0x64, 0x02, 0x65, 0x02, 0x66, 0x02, 0x67, 0x02, + 0x97, 0x01, 0x96, 0x01, 0x6A, 0x02, 0x62, 0x2C, 0x6C, 0x02, 0x6D, 0x02, 0x6E, 0x02, 0x9C, 0x01, + 0x70, 0x02, 0x71, 0x02, 0x9D, 0x01, 0x73, 0x02, 0x74, 0x02, 0x9F, 0x01, 0x76, 0x02, 0x77, 0x02, + 0x78, 0x02, 0x79, 0x02, 0x7A, 0x02, 0x7B, 0x02, 0x7C, 0x02, 0x64, 0x2C, 0x7E, 0x02, 0x7F, 0x02, + 0xA6, 0x01, 0x81, 0x02, 0x82, 0x02, 0xA9, 0x01, 0x84, 0x02, 0x85, 0x02, 0x86, 0x02, 0x87, 0x02, + 0xAE, 0x01, 0x44, 0x02, 0xB1, 0x01, 0xB2, 0x01, 0x45, 0x02, 0x8D, 0x02, 0x8E, 0x02, 0x8F, 0x02, + 0x90, 0x02, 0x91, 0x02, 0xB7, 0x01, 0x93, 0x02, 0x94, 0x02, 0x95, 0x02, 0x96, 0x02, 0x97, 0x02, + 0x98, 0x02, 0x99, 0x02, 0x9A, 0x02, 0x9B, 0x02, 0x9C, 0x02, 0x9D, 0x02, 0x9E, 0x02, 0x9F, 0x02, + 0xA0, 0x02, 0xA1, 0x02, 0xA2, 0x02, 0xA3, 0x02, 0xA4, 0x02, 0xA5, 0x02, 0xA6, 0x02, 0xA7, 0x02, + 0xA8, 0x02, 0xA9, 0x02, 0xAA, 0x02, 0xAB, 0x02, 0xAC, 0x02, 0xAD, 0x02, 0xAE, 0x02, 0xAF, 0x02, + 0xB0, 0x02, 0xB1, 0x02, 0xB2, 0x02, 0xB3, 0x02, 0xB4, 0x02, 0xB5, 0x02, 0xB6, 0x02, 0xB7, 0x02, + 0xB8, 0x02, 0xB9, 0x02, 0xBA, 0x02, 0xBB, 0x02, 0xBC, 0x02, 0xBD, 0x02, 0xBE, 0x02, 0xBF, 0x02, + 0xC0, 0x02, 0xC1, 0x02, 0xC2, 0x02, 0xC3, 0x02, 0xC4, 0x02, 0xC5, 0x02, 0xC6, 0x02, 0xC7, 0x02, + 0xC8, 0x02, 0xC9, 0x02, 0xCA, 0x02, 0xCB, 0x02, 0xCC, 0x02, 0xCD, 0x02, 0xCE, 0x02, 0xCF, 0x02, + 0xD0, 0x02, 0xD1, 0x02, 0xD2, 0x02, 0xD3, 0x02, 0xD4, 0x02, 0xD5, 0x02, 0xD6, 0x02, 0xD7, 0x02, + 0xD8, 0x02, 0xD9, 0x02, 0xDA, 0x02, 0xDB, 0x02, 0xDC, 0x02, 0xDD, 0x02, 0xDE, 0x02, 0xDF, 0x02, + 0xE0, 0x02, 0xE1, 0x02, 0xE2, 0x02, 0xE3, 0x02, 0xE4, 0x02, 0xE5, 0x02, 0xE6, 0x02, 0xE7, 0x02, + 0xE8, 0x02, 0xE9, 0x02, 0xEA, 0x02, 0xEB, 0x02, 0xEC, 0x02, 0xED, 0x02, 0xEE, 0x02, 0xEF, 0x02, + 0xF0, 0x02, 0xF1, 0x02, 0xF2, 0x02, 0xF3, 0x02, 0xF4, 0x02, 0xF5, 0x02, 0xF6, 0x02, 0xF7, 0x02, + 0xF8, 0x02, 0xF9, 0x02, 0xFA, 0x02, 0xFB, 0x02, 0xFC, 0x02, 0xFD, 0x02, 0xFE, 0x02, 0xFF, 0x02, + 0x00, 0x03, 0x01, 0x03, 0x02, 0x03, 0x03, 0x03, 0x04, 0x03, 0x05, 0x03, 0x06, 0x03, 0x07, 0x03, + 0x08, 0x03, 0x09, 0x03, 0x0A, 0x03, 0x0B, 0x03, 0x0C, 0x03, 0x0D, 0x03, 0x0E, 0x03, 0x0F, 0x03, + 0x10, 0x03, 0x11, 0x03, 0x12, 0x03, 0x13, 0x03, 0x14, 0x03, 0x15, 0x03, 0x16, 0x03, 0x17, 0x03, + 0x18, 0x03, 0x19, 0x03, 0x1A, 0x03, 0x1B, 0x03, 0x1C, 0x03, 0x1D, 0x03, 0x1E, 0x03, 0x1F, 0x03, + 0x20, 0x03, 0x21, 0x03, 0x22, 0x03, 0x23, 0x03, 0x24, 0x03, 0x25, 0x03, 0x26, 0x03, 0x27, 0x03, + 0x28, 0x03, 0x29, 0x03, 0x2A, 0x03, 0x2B, 0x03, 0x2C, 0x03, 0x2D, 0x03, 0x2E, 0x03, 0x2F, 0x03, + 0x30, 0x03, 0x31, 0x03, 0x32, 0x03, 0x33, 0x03, 0x34, 0x03, 0x35, 0x03, 0x36, 0x03, 0x37, 0x03, + 0x38, 0x03, 0x39, 0x03, 0x3A, 0x03, 0x3B, 0x03, 0x3C, 0x03, 0x3D, 0x03, 0x3E, 0x03, 0x3F, 0x03, + 0x40, 0x03, 0x41, 0x03, 0x42, 0x03, 0x43, 0x03, 0x44, 0x03, 0x45, 0x03, 0x46, 0x03, 0x47, 0x03, + 0x48, 0x03, 0x49, 0x03, 0x4A, 0x03, 0x4B, 0x03, 0x4C, 0x03, 0x4D, 0x03, 0x4E, 0x03, 0x4F, 0x03, + 0x50, 0x03, 0x51, 0x03, 0x52, 0x03, 0x53, 0x03, 0x54, 0x03, 0x55, 0x03, 0x56, 0x03, 0x57, 0x03, + 0x58, 0x03, 0x59, 0x03, 0x5A, 0x03, 0x5B, 0x03, 0x5C, 0x03, 0x5D, 0x03, 0x5E, 0x03, 0x5F, 0x03, + 0x60, 0x03, 0x61, 0x03, 0x62, 0x03, 0x63, 0x03, 0x64, 0x03, 0x65, 0x03, 0x66, 0x03, 0x67, 0x03, + 0x68, 0x03, 0x69, 0x03, 0x6A, 0x03, 0x6B, 0x03, 0x6C, 0x03, 0x6D, 0x03, 0x6E, 0x03, 0x6F, 0x03, + 0x70, 0x03, 0x71, 0x03, 0x72, 0x03, 0x73, 0x03, 0x74, 0x03, 0x75, 0x03, 0x76, 0x03, 0x77, 0x03, + 0x78, 0x03, 0x79, 0x03, 0x7A, 0x03, 0xFD, 0x03, 0xFE, 0x03, 0xFF, 0x03, 0x7E, 0x03, 0x7F, 0x03, + 0x80, 0x03, 0x81, 0x03, 0x82, 0x03, 0x83, 0x03, 0x84, 0x03, 0x85, 0x03, 0x86, 0x03, 0x87, 0x03, + 0x88, 0x03, 0x89, 0x03, 0x8A, 0x03, 0x8B, 0x03, 0x8C, 0x03, 0x8D, 0x03, 0x8E, 0x03, 0x8F, 0x03, + 0x90, 0x03, 0x91, 0x03, 0x92, 0x03, 0x93, 0x03, 0x94, 0x03, 0x95, 0x03, 0x96, 0x03, 0x97, 0x03, + 0x98, 0x03, 0x99, 0x03, 0x9A, 0x03, 0x9B, 0x03, 0x9C, 0x03, 0x9D, 0x03, 0x9E, 0x03, 0x9F, 0x03, + 0xA0, 0x03, 0xA1, 0x03, 0xA2, 0x03, 0xA3, 0x03, 0xA4, 0x03, 0xA5, 0x03, 0xA6, 0x03, 0xA7, 0x03, + 0xA8, 0x03, 0xA9, 0x03, 0xAA, 0x03, 0xAB, 0x03, 0x86, 0x03, 0x88, 0x03, 0x89, 0x03, 0x8A, 0x03, + 0xB0, 0x03, 0x91, 0x03, 0x92, 0x03, 0x93, 0x03, 0x94, 0x03, 0x95, 0x03, 0x96, 0x03, 0x97, 0x03, + 0x98, 0x03, 0x99, 0x03, 0x9A, 0x03, 0x9B, 0x03, 0x9C, 0x03, 0x9D, 0x03, 0x9E, 0x03, 0x9F, 0x03, + 0xA0, 0x03, 0xA1, 0x03, 0xA3, 0x03, 0xA3, 0x03, 0xA4, 0x03, 0xA5, 0x03, 0xA6, 0x03, 0xA7, 0x03, + 0xA8, 0x03, 0xA9, 0x03, 0xAA, 0x03, 0xAB, 0x03, 0x8C, 0x03, 0x8E, 0x03, 0x8F, 0x03, 0xCF, 0x03, + 0xD0, 0x03, 0xD1, 0x03, 0xD2, 0x03, 0xD3, 0x03, 0xD4, 0x03, 0xD5, 0x03, 0xD6, 0x03, 0xD7, 0x03, + 0xD8, 0x03, 0xD8, 0x03, 0xDA, 0x03, 0xDA, 0x03, 0xDC, 0x03, 0xDC, 0x03, 0xDE, 0x03, 0xDE, 0x03, + 0xE0, 0x03, 0xE0, 0x03, 0xE2, 0x03, 0xE2, 0x03, 0xE4, 0x03, 0xE4, 0x03, 0xE6, 0x03, 0xE6, 0x03, + 0xE8, 0x03, 0xE8, 0x03, 0xEA, 0x03, 0xEA, 0x03, 0xEC, 0x03, 0xEC, 0x03, 0xEE, 0x03, 0xEE, 0x03, + 0xF0, 0x03, 0xF1, 0x03, 0xF9, 0x03, 0xF3, 0x03, 0xF4, 0x03, 0xF5, 0x03, 0xF6, 0x03, 0xF7, 0x03, + 0xF7, 0x03, 0xF9, 0x03, 0xFA, 0x03, 0xFA, 0x03, 0xFC, 0x03, 0xFD, 0x03, 0xFE, 0x03, 0xFF, 0x03, + 0x00, 0x04, 0x01, 0x04, 0x02, 0x04, 0x03, 0x04, 0x04, 0x04, 0x05, 0x04, 0x06, 0x04, 0x07, 0x04, + 0x08, 0x04, 0x09, 0x04, 0x0A, 0x04, 0x0B, 0x04, 0x0C, 0x04, 0x0D, 0x04, 0x0E, 0x04, 0x0F, 0x04, + 0x10, 0x04, 0x11, 0x04, 0x12, 0x04, 0x13, 0x04, 0x14, 0x04, 0x15, 0x04, 0x16, 0x04, 0x17, 0x04, + 0x18, 0x04, 0x19, 0x04, 0x1A, 0x04, 0x1B, 0x04, 0x1C, 0x04, 0x1D, 0x04, 0x1E, 0x04, 0x1F, 0x04, + 0x20, 0x04, 0x21, 0x04, 0x22, 0x04, 0x23, 0x04, 0x24, 0x04, 0x25, 0x04, 0x26, 0x04, 0x27, 0x04, + 0x28, 0x04, 0x29, 0x04, 0x2A, 0x04, 0x2B, 0x04, 0x2C, 0x04, 0x2D, 0x04, 0x2E, 0x04, 0x2F, 0x04, + 0x10, 0x04, 0x11, 0x04, 0x12, 0x04, 0x13, 0x04, 0x14, 0x04, 0x15, 0x04, 0x16, 0x04, 0x17, 0x04, + 0x18, 0x04, 0x19, 0x04, 0x1A, 0x04, 0x1B, 0x04, 0x1C, 0x04, 0x1D, 0x04, 0x1E, 0x04, 0x1F, 0x04, + 0x20, 0x04, 0x21, 0x04, 0x22, 0x04, 0x23, 0x04, 0x24, 0x04, 0x25, 0x04, 0x26, 0x04, 0x27, 0x04, + 0x28, 0x04, 0x29, 0x04, 0x2A, 0x04, 0x2B, 0x04, 0x2C, 0x04, 0x2D, 0x04, 0x2E, 0x04, 0x2F, 0x04, + 0x00, 0x04, 0x01, 0x04, 0x02, 0x04, 0x03, 0x04, 0x04, 0x04, 0x05, 0x04, 0x06, 0x04, 0x07, 0x04, + 0x08, 0x04, 0x09, 0x04, 0x0A, 0x04, 0x0B, 0x04, 0x0C, 0x04, 0x0D, 0x04, 0x0E, 0x04, 0x0F, 0x04, + 0x60, 0x04, 0x60, 0x04, 0x62, 0x04, 0x62, 0x04, 0x64, 0x04, 0x64, 0x04, 0x66, 0x04, 0x66, 0x04, + 0x68, 0x04, 0x68, 0x04, 0x6A, 0x04, 0x6A, 0x04, 0x6C, 0x04, 0x6C, 0x04, 0x6E, 0x04, 0x6E, 0x04, + 0x70, 0x04, 0x70, 0x04, 0x72, 0x04, 0x72, 0x04, 0x74, 0x04, 0x74, 0x04, 0x76, 0x04, 0x76, 0x04, + 0x78, 0x04, 0x78, 0x04, 0x7A, 0x04, 0x7A, 0x04, 0x7C, 0x04, 0x7C, 0x04, 0x7E, 0x04, 0x7E, 0x04, + 0x80, 0x04, 0x80, 0x04, 0x82, 0x04, 0x83, 0x04, 0x84, 0x04, 0x85, 0x04, 0x86, 0x04, 0x87, 0x04, + 0x88, 0x04, 0x89, 0x04, 0x8A, 0x04, 0x8A, 0x04, 0x8C, 0x04, 0x8C, 0x04, 0x8E, 0x04, 0x8E, 0x04, + 0x90, 0x04, 0x90, 0x04, 0x92, 0x04, 0x92, 0x04, 0x94, 0x04, 0x94, 0x04, 0x96, 0x04, 0x96, 0x04, + 0x98, 0x04, 0x98, 0x04, 0x9A, 0x04, 0x9A, 0x04, 0x9C, 0x04, 0x9C, 0x04, 0x9E, 0x04, 0x9E, 0x04, + 0xA0, 0x04, 0xA0, 0x04, 0xA2, 0x04, 0xA2, 0x04, 0xA4, 0x04, 0xA4, 0x04, 0xA6, 0x04, 0xA6, 0x04, + 0xA8, 0x04, 0xA8, 0x04, 0xAA, 0x04, 0xAA, 0x04, 0xAC, 0x04, 0xAC, 0x04, 0xAE, 0x04, 0xAE, 0x04, + 0xB0, 0x04, 0xB0, 0x04, 0xB2, 0x04, 0xB2, 0x04, 0xB4, 0x04, 0xB4, 0x04, 0xB6, 0x04, 0xB6, 0x04, + 0xB8, 0x04, 0xB8, 0x04, 0xBA, 0x04, 0xBA, 0x04, 0xBC, 0x04, 0xBC, 0x04, 0xBE, 0x04, 0xBE, 0x04, + 0xC0, 0x04, 0xC1, 0x04, 0xC1, 0x04, 0xC3, 0x04, 0xC3, 0x04, 0xC5, 0x04, 0xC5, 0x04, 0xC7, 0x04, + 0xC7, 0x04, 0xC9, 0x04, 0xC9, 0x04, 0xCB, 0x04, 0xCB, 0x04, 0xCD, 0x04, 0xCD, 0x04, 0xC0, 0x04, + 0xD0, 0x04, 0xD0, 0x04, 0xD2, 0x04, 0xD2, 0x04, 0xD4, 0x04, 0xD4, 0x04, 0xD6, 0x04, 0xD6, 0x04, + 0xD8, 0x04, 0xD8, 0x04, 0xDA, 0x04, 0xDA, 0x04, 0xDC, 0x04, 0xDC, 0x04, 0xDE, 0x04, 0xDE, 0x04, + 0xE0, 0x04, 0xE0, 0x04, 0xE2, 0x04, 0xE2, 0x04, 0xE4, 0x04, 0xE4, 0x04, 0xE6, 0x04, 0xE6, 0x04, + 0xE8, 0x04, 0xE8, 0x04, 0xEA, 0x04, 0xEA, 0x04, 0xEC, 0x04, 0xEC, 0x04, 0xEE, 0x04, 0xEE, 0x04, + 0xF0, 0x04, 0xF0, 0x04, 0xF2, 0x04, 0xF2, 0x04, 0xF4, 0x04, 0xF4, 0x04, 0xF6, 0x04, 0xF6, 0x04, + 0xF8, 0x04, 0xF8, 0x04, 0xFA, 0x04, 0xFA, 0x04, 0xFC, 0x04, 0xFC, 0x04, 0xFE, 0x04, 0xFE, 0x04, + 0x00, 0x05, 0x00, 0x05, 0x02, 0x05, 0x02, 0x05, 0x04, 0x05, 0x04, 0x05, 0x06, 0x05, 0x06, 0x05, + 0x08, 0x05, 0x08, 0x05, 0x0A, 0x05, 0x0A, 0x05, 0x0C, 0x05, 0x0C, 0x05, 0x0E, 0x05, 0x0E, 0x05, + 0x10, 0x05, 0x10, 0x05, 0x12, 0x05, 0x12, 0x05, 0x14, 0x05, 0x15, 0x05, 0x16, 0x05, 0x17, 0x05, + 0x18, 0x05, 0x19, 0x05, 0x1A, 0x05, 0x1B, 0x05, 0x1C, 0x05, 0x1D, 0x05, 0x1E, 0x05, 0x1F, 0x05, + 0x20, 0x05, 0x21, 0x05, 0x22, 0x05, 0x23, 0x05, 0x24, 0x05, 0x25, 0x05, 0x26, 0x05, 0x27, 0x05, + 0x28, 0x05, 0x29, 0x05, 0x2A, 0x05, 0x2B, 0x05, 0x2C, 0x05, 0x2D, 0x05, 0x2E, 0x05, 0x2F, 0x05, + 0x30, 0x05, 0x31, 0x05, 0x32, 0x05, 0x33, 0x05, 0x34, 0x05, 0x35, 0x05, 0x36, 0x05, 0x37, 0x05, + 0x38, 0x05, 0x39, 0x05, 0x3A, 0x05, 0x3B, 0x05, 0x3C, 0x05, 0x3D, 0x05, 0x3E, 0x05, 0x3F, 0x05, + 0x40, 0x05, 0x41, 0x05, 0x42, 0x05, 0x43, 0x05, 0x44, 0x05, 0x45, 0x05, 0x46, 0x05, 0x47, 0x05, + 0x48, 0x05, 0x49, 0x05, 0x4A, 0x05, 0x4B, 0x05, 0x4C, 0x05, 0x4D, 0x05, 0x4E, 0x05, 0x4F, 0x05, + 0x50, 0x05, 0x51, 0x05, 0x52, 0x05, 0x53, 0x05, 0x54, 0x05, 0x55, 0x05, 0x56, 0x05, 0x57, 0x05, + 0x58, 0x05, 0x59, 0x05, 0x5A, 0x05, 0x5B, 0x05, 0x5C, 0x05, 0x5D, 0x05, 0x5E, 0x05, 0x5F, 0x05, + 0x60, 0x05, 0x31, 0x05, 0x32, 0x05, 0x33, 0x05, 0x34, 0x05, 0x35, 0x05, 0x36, 0x05, 0x37, 0x05, + 0x38, 0x05, 0x39, 0x05, 0x3A, 0x05, 0x3B, 0x05, 0x3C, 0x05, 0x3D, 0x05, 0x3E, 0x05, 0x3F, 0x05, + 0x40, 0x05, 0x41, 0x05, 0x42, 0x05, 0x43, 0x05, 0x44, 0x05, 0x45, 0x05, 0x46, 0x05, 0x47, 0x05, + 0x48, 0x05, 0x49, 0x05, 0x4A, 0x05, 0x4B, 0x05, 0x4C, 0x05, 0x4D, 0x05, 0x4E, 0x05, 0x4F, 0x05, + 0x50, 0x05, 0x51, 0x05, 0x52, 0x05, 0x53, 0x05, 0x54, 0x05, 0x55, 0x05, 0x56, 0x05, 0xFF, 0xFF, + 0xF6, 0x17, 0x63, 0x2C, 0x7E, 0x1D, 0x7F, 0x1D, 0x80, 0x1D, 0x81, 0x1D, 0x82, 0x1D, 0x83, 0x1D, + 0x84, 0x1D, 0x85, 0x1D, 0x86, 0x1D, 0x87, 0x1D, 0x88, 0x1D, 0x89, 0x1D, 0x8A, 0x1D, 0x8B, 0x1D, + 0x8C, 0x1D, 0x8D, 0x1D, 0x8E, 0x1D, 0x8F, 0x1D, 0x90, 0x1D, 0x91, 0x1D, 0x92, 0x1D, 0x93, 0x1D, + 0x94, 0x1D, 0x95, 0x1D, 0x96, 0x1D, 0x97, 0x1D, 0x98, 0x1D, 0x99, 0x1D, 0x9A, 0x1D, 0x9B, 0x1D, + 0x9C, 0x1D, 0x9D, 0x1D, 0x9E, 0x1D, 0x9F, 0x1D, 0xA0, 0x1D, 0xA1, 0x1D, 0xA2, 0x1D, 0xA3, 0x1D, + 0xA4, 0x1D, 0xA5, 0x1D, 0xA6, 0x1D, 0xA7, 0x1D, 0xA8, 0x1D, 0xA9, 0x1D, 0xAA, 0x1D, 0xAB, 0x1D, + 0xAC, 0x1D, 0xAD, 0x1D, 0xAE, 0x1D, 0xAF, 0x1D, 0xB0, 0x1D, 0xB1, 0x1D, 0xB2, 0x1D, 0xB3, 0x1D, + 0xB4, 0x1D, 0xB5, 0x1D, 0xB6, 0x1D, 0xB7, 0x1D, 0xB8, 0x1D, 0xB9, 0x1D, 0xBA, 0x1D, 0xBB, 0x1D, + 0xBC, 0x1D, 0xBD, 0x1D, 0xBE, 0x1D, 0xBF, 0x1D, 0xC0, 0x1D, 0xC1, 0x1D, 0xC2, 0x1D, 0xC3, 0x1D, + 0xC4, 0x1D, 0xC5, 0x1D, 0xC6, 0x1D, 0xC7, 0x1D, 0xC8, 0x1D, 0xC9, 0x1D, 0xCA, 0x1D, 0xCB, 0x1D, + 0xCC, 0x1D, 0xCD, 0x1D, 0xCE, 0x1D, 0xCF, 0x1D, 0xD0, 0x1D, 0xD1, 0x1D, 0xD2, 0x1D, 0xD3, 0x1D, + 0xD4, 0x1D, 0xD5, 0x1D, 0xD6, 0x1D, 0xD7, 0x1D, 0xD8, 0x1D, 0xD9, 0x1D, 0xDA, 0x1D, 0xDB, 0x1D, + 0xDC, 0x1D, 0xDD, 0x1D, 0xDE, 0x1D, 0xDF, 0x1D, 0xE0, 0x1D, 0xE1, 0x1D, 0xE2, 0x1D, 0xE3, 0x1D, + 0xE4, 0x1D, 0xE5, 0x1D, 0xE6, 0x1D, 0xE7, 0x1D, 0xE8, 0x1D, 0xE9, 0x1D, 0xEA, 0x1D, 0xEB, 0x1D, + 0xEC, 0x1D, 0xED, 0x1D, 0xEE, 0x1D, 0xEF, 0x1D, 0xF0, 0x1D, 0xF1, 0x1D, 0xF2, 0x1D, 0xF3, 0x1D, + 0xF4, 0x1D, 0xF5, 0x1D, 0xF6, 0x1D, 0xF7, 0x1D, 0xF8, 0x1D, 0xF9, 0x1D, 0xFA, 0x1D, 0xFB, 0x1D, + 0xFC, 0x1D, 0xFD, 0x1D, 0xFE, 0x1D, 0xFF, 0x1D, 0x00, 0x1E, 0x00, 0x1E, 0x02, 0x1E, 0x02, 0x1E, + 0x04, 0x1E, 0x04, 0x1E, 0x06, 0x1E, 0x06, 0x1E, 0x08, 0x1E, 0x08, 0x1E, 0x0A, 0x1E, 0x0A, 0x1E, + 0x0C, 0x1E, 0x0C, 0x1E, 0x0E, 0x1E, 0x0E, 0x1E, 0x10, 0x1E, 0x10, 0x1E, 0x12, 0x1E, 0x12, 0x1E, + 0x14, 0x1E, 0x14, 0x1E, 0x16, 0x1E, 0x16, 0x1E, 0x18, 0x1E, 0x18, 0x1E, 0x1A, 0x1E, 0x1A, 0x1E, + 0x1C, 0x1E, 0x1C, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x20, 0x1E, 0x20, 0x1E, 0x22, 0x1E, 0x22, 0x1E, + 0x24, 0x1E, 0x24, 0x1E, 0x26, 0x1E, 0x26, 0x1E, 0x28, 0x1E, 0x28, 0x1E, 0x2A, 0x1E, 0x2A, 0x1E, + 0x2C, 0x1E, 0x2C, 0x1E, 0x2E, 0x1E, 0x2E, 0x1E, 0x30, 0x1E, 0x30, 0x1E, 0x32, 0x1E, 0x32, 0x1E, + 0x34, 0x1E, 0x34, 0x1E, 0x36, 0x1E, 0x36, 0x1E, 0x38, 0x1E, 0x38, 0x1E, 0x3A, 0x1E, 0x3A, 0x1E, + 0x3C, 0x1E, 0x3C, 0x1E, 0x3E, 0x1E, 0x3E, 0x1E, 0x40, 0x1E, 0x40, 0x1E, 0x42, 0x1E, 0x42, 0x1E, + 0x44, 0x1E, 0x44, 0x1E, 0x46, 0x1E, 0x46, 0x1E, 0x48, 0x1E, 0x48, 0x1E, 0x4A, 0x1E, 0x4A, 0x1E, + 0x4C, 0x1E, 0x4C, 0x1E, 0x4E, 0x1E, 0x4E, 0x1E, 0x50, 0x1E, 0x50, 0x1E, 0x52, 0x1E, 0x52, 0x1E, + 0x54, 0x1E, 0x54, 0x1E, 0x56, 0x1E, 0x56, 0x1E, 0x58, 0x1E, 0x58, 0x1E, 0x5A, 0x1E, 0x5A, 0x1E, + 0x5C, 0x1E, 0x5C, 0x1E, 0x5E, 0x1E, 0x5E, 0x1E, 0x60, 0x1E, 0x60, 0x1E, 0x62, 0x1E, 0x62, 0x1E, + 0x64, 0x1E, 0x64, 0x1E, 0x66, 0x1E, 0x66, 0x1E, 0x68, 0x1E, 0x68, 0x1E, 0x6A, 0x1E, 0x6A, 0x1E, + 0x6C, 0x1E, 0x6C, 0x1E, 0x6E, 0x1E, 0x6E, 0x1E, 0x70, 0x1E, 0x70, 0x1E, 0x72, 0x1E, 0x72, 0x1E, + 0x74, 0x1E, 0x74, 0x1E, 0x76, 0x1E, 0x76, 0x1E, 0x78, 0x1E, 0x78, 0x1E, 0x7A, 0x1E, 0x7A, 0x1E, + 0x7C, 0x1E, 0x7C, 0x1E, 0x7E, 0x1E, 0x7E, 0x1E, 0x80, 0x1E, 0x80, 0x1E, 0x82, 0x1E, 0x82, 0x1E, + 0x84, 0x1E, 0x84, 0x1E, 0x86, 0x1E, 0x86, 0x1E, 0x88, 0x1E, 0x88, 0x1E, 0x8A, 0x1E, 0x8A, 0x1E, + 0x8C, 0x1E, 0x8C, 0x1E, 0x8E, 0x1E, 0x8E, 0x1E, 0x90, 0x1E, 0x90, 0x1E, 0x92, 0x1E, 0x92, 0x1E, + 0x94, 0x1E, 0x94, 0x1E, 0x96, 0x1E, 0x97, 0x1E, 0x98, 0x1E, 0x99, 0x1E, 0x9A, 0x1E, 0x9B, 0x1E, + 0x9C, 0x1E, 0x9D, 0x1E, 0x9E, 0x1E, 0x9F, 0x1E, 0xA0, 0x1E, 0xA0, 0x1E, 0xA2, 0x1E, 0xA2, 0x1E, + 0xA4, 0x1E, 0xA4, 0x1E, 0xA6, 0x1E, 0xA6, 0x1E, 0xA8, 0x1E, 0xA8, 0x1E, 0xAA, 0x1E, 0xAA, 0x1E, + 0xAC, 0x1E, 0xAC, 0x1E, 0xAE, 0x1E, 0xAE, 0x1E, 0xB0, 0x1E, 0xB0, 0x1E, 0xB2, 0x1E, 0xB2, 0x1E, + 0xB4, 0x1E, 0xB4, 0x1E, 0xB6, 0x1E, 0xB6, 0x1E, 0xB8, 0x1E, 0xB8, 0x1E, 0xBA, 0x1E, 0xBA, 0x1E, + 0xBC, 0x1E, 0xBC, 0x1E, 0xBE, 0x1E, 0xBE, 0x1E, 0xC0, 0x1E, 0xC0, 0x1E, 0xC2, 0x1E, 0xC2, 0x1E, + 0xC4, 0x1E, 0xC4, 0x1E, 0xC6, 0x1E, 0xC6, 0x1E, 0xC8, 0x1E, 0xC8, 0x1E, 0xCA, 0x1E, 0xCA, 0x1E, + 0xCC, 0x1E, 0xCC, 0x1E, 0xCE, 0x1E, 0xCE, 0x1E, 0xD0, 0x1E, 0xD0, 0x1E, 0xD2, 0x1E, 0xD2, 0x1E, + 0xD4, 0x1E, 0xD4, 0x1E, 0xD6, 0x1E, 0xD6, 0x1E, 0xD8, 0x1E, 0xD8, 0x1E, 0xDA, 0x1E, 0xDA, 0x1E, + 0xDC, 0x1E, 0xDC, 0x1E, 0xDE, 0x1E, 0xDE, 0x1E, 0xE0, 0x1E, 0xE0, 0x1E, 0xE2, 0x1E, 0xE2, 0x1E, + 0xE4, 0x1E, 0xE4, 0x1E, 0xE6, 0x1E, 0xE6, 0x1E, 0xE8, 0x1E, 0xE8, 0x1E, 0xEA, 0x1E, 0xEA, 0x1E, + 0xEC, 0x1E, 0xEC, 0x1E, 0xEE, 0x1E, 0xEE, 0x1E, 0xF0, 0x1E, 0xF0, 0x1E, 0xF2, 0x1E, 0xF2, 0x1E, + 0xF4, 0x1E, 0xF4, 0x1E, 0xF6, 0x1E, 0xF6, 0x1E, 0xF8, 0x1E, 0xF8, 0x1E, 0xFA, 0x1E, 0xFB, 0x1E, + 0xFC, 0x1E, 0xFD, 0x1E, 0xFE, 0x1E, 0xFF, 0x1E, 0x08, 0x1F, 0x09, 0x1F, 0x0A, 0x1F, 0x0B, 0x1F, + 0x0C, 0x1F, 0x0D, 0x1F, 0x0E, 0x1F, 0x0F, 0x1F, 0x08, 0x1F, 0x09, 0x1F, 0x0A, 0x1F, 0x0B, 0x1F, + 0x0C, 0x1F, 0x0D, 0x1F, 0x0E, 0x1F, 0x0F, 0x1F, 0x18, 0x1F, 0x19, 0x1F, 0x1A, 0x1F, 0x1B, 0x1F, + 0x1C, 0x1F, 0x1D, 0x1F, 0x16, 0x1F, 0x17, 0x1F, 0x18, 0x1F, 0x19, 0x1F, 0x1A, 0x1F, 0x1B, 0x1F, + 0x1C, 0x1F, 0x1D, 0x1F, 0x1E, 0x1F, 0x1F, 0x1F, 0x28, 0x1F, 0x29, 0x1F, 0x2A, 0x1F, 0x2B, 0x1F, + 0x2C, 0x1F, 0x2D, 0x1F, 0x2E, 0x1F, 0x2F, 0x1F, 0x28, 0x1F, 0x29, 0x1F, 0x2A, 0x1F, 0x2B, 0x1F, + 0x2C, 0x1F, 0x2D, 0x1F, 0x2E, 0x1F, 0x2F, 0x1F, 0x38, 0x1F, 0x39, 0x1F, 0x3A, 0x1F, 0x3B, 0x1F, + 0x3C, 0x1F, 0x3D, 0x1F, 0x3E, 0x1F, 0x3F, 0x1F, 0x38, 0x1F, 0x39, 0x1F, 0x3A, 0x1F, 0x3B, 0x1F, + 0x3C, 0x1F, 0x3D, 0x1F, 0x3E, 0x1F, 0x3F, 0x1F, 0x48, 0x1F, 0x49, 0x1F, 0x4A, 0x1F, 0x4B, 0x1F, + 0x4C, 0x1F, 0x4D, 0x1F, 0x46, 0x1F, 0x47, 0x1F, 0x48, 0x1F, 0x49, 0x1F, 0x4A, 0x1F, 0x4B, 0x1F, + 0x4C, 0x1F, 0x4D, 0x1F, 0x4E, 0x1F, 0x4F, 0x1F, 0x50, 0x1F, 0x59, 0x1F, 0x52, 0x1F, 0x5B, 0x1F, + 0x54, 0x1F, 0x5D, 0x1F, 0x56, 0x1F, 0x5F, 0x1F, 0x58, 0x1F, 0x59, 0x1F, 0x5A, 0x1F, 0x5B, 0x1F, + 0x5C, 0x1F, 0x5D, 0x1F, 0x5E, 0x1F, 0x5F, 0x1F, 0x68, 0x1F, 0x69, 0x1F, 0x6A, 0x1F, 0x6B, 0x1F, + 0x6C, 0x1F, 0x6D, 0x1F, 0x6E, 0x1F, 0x6F, 0x1F, 0x68, 0x1F, 0x69, 0x1F, 0x6A, 0x1F, 0x6B, 0x1F, + 0x6C, 0x1F, 0x6D, 0x1F, 0x6E, 0x1F, 0x6F, 0x1F, 0xBA, 0x1F, 0xBB, 0x1F, 0xC8, 0x1F, 0xC9, 0x1F, + 0xCA, 0x1F, 0xCB, 0x1F, 0xDA, 0x1F, 0xDB, 0x1F, 0xF8, 0x1F, 0xF9, 0x1F, 0xEA, 0x1F, 0xEB, 0x1F, + 0xFA, 0x1F, 0xFB, 0x1F, 0x7E, 0x1F, 0x7F, 0x1F, 0x88, 0x1F, 0x89, 0x1F, 0x8A, 0x1F, 0x8B, 0x1F, + 0x8C, 0x1F, 0x8D, 0x1F, 0x8E, 0x1F, 0x8F, 0x1F, 0x88, 0x1F, 0x89, 0x1F, 0x8A, 0x1F, 0x8B, 0x1F, + 0x8C, 0x1F, 0x8D, 0x1F, 0x8E, 0x1F, 0x8F, 0x1F, 0x98, 0x1F, 0x99, 0x1F, 0x9A, 0x1F, 0x9B, 0x1F, + 0x9C, 0x1F, 0x9D, 0x1F, 0x9E, 0x1F, 0x9F, 0x1F, 0x98, 0x1F, 0x99, 0x1F, 0x9A, 0x1F, 0x9B, 0x1F, + 0x9C, 0x1F, 0x9D, 0x1F, 0x9E, 0x1F, 0x9F, 0x1F, 0xA8, 0x1F, 0xA9, 0x1F, 0xAA, 0x1F, 0xAB, 0x1F, + 0xAC, 0x1F, 0xAD, 0x1F, 0xAE, 0x1F, 0xAF, 0x1F, 0xA8, 0x1F, 0xA9, 0x1F, 0xAA, 0x1F, 0xAB, 0x1F, + 0xAC, 0x1F, 0xAD, 0x1F, 0xAE, 0x1F, 0xAF, 0x1F, 0xB8, 0x1F, 0xB9, 0x1F, 0xB2, 0x1F, 0xBC, 0x1F, + 0xB4, 0x1F, 0xB5, 0x1F, 0xB6, 0x1F, 0xB7, 0x1F, 0xB8, 0x1F, 0xB9, 0x1F, 0xBA, 0x1F, 0xBB, 0x1F, + 0xBC, 0x1F, 0xBD, 0x1F, 0xBE, 0x1F, 0xBF, 0x1F, 0xC0, 0x1F, 0xC1, 0x1F, 0xC2, 0x1F, 0xC3, 0x1F, + 0xC4, 0x1F, 0xC5, 0x1F, 0xC6, 0x1F, 0xC7, 0x1F, 0xC8, 0x1F, 0xC9, 0x1F, 0xCA, 0x1F, 0xCB, 0x1F, + 0xC3, 0x1F, 0xCD, 0x1F, 0xCE, 0x1F, 0xCF, 0x1F, 0xD8, 0x1F, 0xD9, 0x1F, 0xD2, 0x1F, 0xD3, 0x1F, + 0xD4, 0x1F, 0xD5, 0x1F, 0xD6, 0x1F, 0xD7, 0x1F, 0xD8, 0x1F, 0xD9, 0x1F, 0xDA, 0x1F, 0xDB, 0x1F, + 0xDC, 0x1F, 0xDD, 0x1F, 0xDE, 0x1F, 0xDF, 0x1F, 0xE8, 0x1F, 0xE9, 0x1F, 0xE2, 0x1F, 0xE3, 0x1F, + 0xE4, 0x1F, 0xEC, 0x1F, 0xE6, 0x1F, 0xE7, 0x1F, 0xE8, 0x1F, 0xE9, 0x1F, 0xEA, 0x1F, 0xEB, 0x1F, + 0xEC, 0x1F, 0xED, 0x1F, 0xEE, 0x1F, 0xEF, 0x1F, 0xF0, 0x1F, 0xF1, 0x1F, 0xF2, 0x1F, 0xF3, 0x1F, + 0xF4, 0x1F, 0xF5, 0x1F, 0xF6, 0x1F, 0xF7, 0x1F, 0xF8, 0x1F, 0xF9, 0x1F, 0xFA, 0x1F, 0xFB, 0x1F, + 0xF3, 0x1F, 0xFD, 0x1F, 0xFE, 0x1F, 0xFF, 0x1F, 0x00, 0x20, 0x01, 0x20, 0x02, 0x20, 0x03, 0x20, + 0x04, 0x20, 0x05, 0x20, 0x06, 0x20, 0x07, 0x20, 0x08, 0x20, 0x09, 0x20, 0x0A, 0x20, 0x0B, 0x20, + 0x0C, 0x20, 0x0D, 0x20, 0x0E, 0x20, 0x0F, 0x20, 0x10, 0x20, 0x11, 0x20, 0x12, 0x20, 0x13, 0x20, + 0x14, 0x20, 0x15, 0x20, 0x16, 0x20, 0x17, 0x20, 0x18, 0x20, 0x19, 0x20, 0x1A, 0x20, 0x1B, 0x20, + 0x1C, 0x20, 0x1D, 0x20, 0x1E, 0x20, 0x1F, 0x20, 0x20, 0x20, 0x21, 0x20, 0x22, 0x20, 0x23, 0x20, + 0x24, 0x20, 0x25, 0x20, 0x26, 0x20, 0x27, 0x20, 0x28, 0x20, 0x29, 0x20, 0x2A, 0x20, 0x2B, 0x20, + 0x2C, 0x20, 0x2D, 0x20, 0x2E, 0x20, 0x2F, 0x20, 0x30, 0x20, 0x31, 0x20, 0x32, 0x20, 0x33, 0x20, + 0x34, 0x20, 0x35, 0x20, 0x36, 0x20, 0x37, 0x20, 0x38, 0x20, 0x39, 0x20, 0x3A, 0x20, 0x3B, 0x20, + 0x3C, 0x20, 0x3D, 0x20, 0x3E, 0x20, 0x3F, 0x20, 0x40, 0x20, 0x41, 0x20, 0x42, 0x20, 0x43, 0x20, + 0x44, 0x20, 0x45, 0x20, 0x46, 0x20, 0x47, 0x20, 0x48, 0x20, 0x49, 0x20, 0x4A, 0x20, 0x4B, 0x20, + 0x4C, 0x20, 0x4D, 0x20, 0x4E, 0x20, 0x4F, 0x20, 0x50, 0x20, 0x51, 0x20, 0x52, 0x20, 0x53, 0x20, + 0x54, 0x20, 0x55, 0x20, 0x56, 0x20, 0x57, 0x20, 0x58, 0x20, 0x59, 0x20, 0x5A, 0x20, 0x5B, 0x20, + 0x5C, 0x20, 0x5D, 0x20, 0x5E, 0x20, 0x5F, 0x20, 0x60, 0x20, 0x61, 0x20, 0x62, 0x20, 0x63, 0x20, + 0x64, 0x20, 0x65, 0x20, 0x66, 0x20, 0x67, 0x20, 0x68, 0x20, 0x69, 0x20, 0x6A, 0x20, 0x6B, 0x20, + 0x6C, 0x20, 0x6D, 0x20, 0x6E, 0x20, 0x6F, 0x20, 0x70, 0x20, 0x71, 0x20, 0x72, 0x20, 0x73, 0x20, + 0x74, 0x20, 0x75, 0x20, 0x76, 0x20, 0x77, 0x20, 0x78, 0x20, 0x79, 0x20, 0x7A, 0x20, 0x7B, 0x20, + 0x7C, 0x20, 0x7D, 0x20, 0x7E, 0x20, 0x7F, 0x20, 0x80, 0x20, 0x81, 0x20, 0x82, 0x20, 0x83, 0x20, + 0x84, 0x20, 0x85, 0x20, 0x86, 0x20, 0x87, 0x20, 0x88, 0x20, 0x89, 0x20, 0x8A, 0x20, 0x8B, 0x20, + 0x8C, 0x20, 0x8D, 0x20, 0x8E, 0x20, 0x8F, 0x20, 0x90, 0x20, 0x91, 0x20, 0x92, 0x20, 0x93, 0x20, + 0x94, 0x20, 0x95, 0x20, 0x96, 0x20, 0x97, 0x20, 0x98, 0x20, 0x99, 0x20, 0x9A, 0x20, 0x9B, 0x20, + 0x9C, 0x20, 0x9D, 0x20, 0x9E, 0x20, 0x9F, 0x20, 0xA0, 0x20, 0xA1, 0x20, 0xA2, 0x20, 0xA3, 0x20, + 0xA4, 0x20, 0xA5, 0x20, 0xA6, 0x20, 0xA7, 0x20, 0xA8, 0x20, 0xA9, 0x20, 0xAA, 0x20, 0xAB, 0x20, + 0xAC, 0x20, 0xAD, 0x20, 0xAE, 0x20, 0xAF, 0x20, 0xB0, 0x20, 0xB1, 0x20, 0xB2, 0x20, 0xB3, 0x20, + 0xB4, 0x20, 0xB5, 0x20, 0xB6, 0x20, 0xB7, 0x20, 0xB8, 0x20, 0xB9, 0x20, 0xBA, 0x20, 0xBB, 0x20, + 0xBC, 0x20, 0xBD, 0x20, 0xBE, 0x20, 0xBF, 0x20, 0xC0, 0x20, 0xC1, 0x20, 0xC2, 0x20, 0xC3, 0x20, + 0xC4, 0x20, 0xC5, 0x20, 0xC6, 0x20, 0xC7, 0x20, 0xC8, 0x20, 0xC9, 0x20, 0xCA, 0x20, 0xCB, 0x20, + 0xCC, 0x20, 0xCD, 0x20, 0xCE, 0x20, 0xCF, 0x20, 0xD0, 0x20, 0xD1, 0x20, 0xD2, 0x20, 0xD3, 0x20, + 0xD4, 0x20, 0xD5, 0x20, 0xD6, 0x20, 0xD7, 0x20, 0xD8, 0x20, 0xD9, 0x20, 0xDA, 0x20, 0xDB, 0x20, + 0xDC, 0x20, 0xDD, 0x20, 0xDE, 0x20, 0xDF, 0x20, 0xE0, 0x20, 0xE1, 0x20, 0xE2, 0x20, 0xE3, 0x20, + 0xE4, 0x20, 0xE5, 0x20, 0xE6, 0x20, 0xE7, 0x20, 0xE8, 0x20, 0xE9, 0x20, 0xEA, 0x20, 0xEB, 0x20, + 0xEC, 0x20, 0xED, 0x20, 0xEE, 0x20, 0xEF, 0x20, 0xF0, 0x20, 0xF1, 0x20, 0xF2, 0x20, 0xF3, 0x20, + 0xF4, 0x20, 0xF5, 0x20, 0xF6, 0x20, 0xF7, 0x20, 0xF8, 0x20, 0xF9, 0x20, 0xFA, 0x20, 0xFB, 0x20, + 0xFC, 0x20, 0xFD, 0x20, 0xFE, 0x20, 0xFF, 0x20, 0x00, 0x21, 0x01, 0x21, 0x02, 0x21, 0x03, 0x21, + 0x04, 0x21, 0x05, 0x21, 0x06, 0x21, 0x07, 0x21, 0x08, 0x21, 0x09, 0x21, 0x0A, 0x21, 0x0B, 0x21, + 0x0C, 0x21, 0x0D, 0x21, 0x0E, 0x21, 0x0F, 0x21, 0x10, 0x21, 0x11, 0x21, 0x12, 0x21, 0x13, 0x21, + 0x14, 0x21, 0x15, 0x21, 0x16, 0x21, 0x17, 0x21, 0x18, 0x21, 0x19, 0x21, 0x1A, 0x21, 0x1B, 0x21, + 0x1C, 0x21, 0x1D, 0x21, 0x1E, 0x21, 0x1F, 0x21, 0x20, 0x21, 0x21, 0x21, 0x22, 0x21, 0x23, 0x21, + 0x24, 0x21, 0x25, 0x21, 0x26, 0x21, 0x27, 0x21, 0x28, 0x21, 0x29, 0x21, 0x2A, 0x21, 0x2B, 0x21, + 0x2C, 0x21, 0x2D, 0x21, 0x2E, 0x21, 0x2F, 0x21, 0x30, 0x21, 0x31, 0x21, 0x32, 0x21, 0x33, 0x21, + 0x34, 0x21, 0x35, 0x21, 0x36, 0x21, 0x37, 0x21, 0x38, 0x21, 0x39, 0x21, 0x3A, 0x21, 0x3B, 0x21, + 0x3C, 0x21, 0x3D, 0x21, 0x3E, 0x21, 0x3F, 0x21, 0x40, 0x21, 0x41, 0x21, 0x42, 0x21, 0x43, 0x21, + 0x44, 0x21, 0x45, 0x21, 0x46, 0x21, 0x47, 0x21, 0x48, 0x21, 0x49, 0x21, 0x4A, 0x21, 0x4B, 0x21, + 0x4C, 0x21, 0x4D, 0x21, 0x32, 0x21, 0x4F, 0x21, 0x50, 0x21, 0x51, 0x21, 0x52, 0x21, 0x53, 0x21, + 0x54, 0x21, 0x55, 0x21, 0x56, 0x21, 0x57, 0x21, 0x58, 0x21, 0x59, 0x21, 0x5A, 0x21, 0x5B, 0x21, + 0x5C, 0x21, 0x5D, 0x21, 0x5E, 0x21, 0x5F, 0x21, 0x60, 0x21, 0x61, 0x21, 0x62, 0x21, 0x63, 0x21, + 0x64, 0x21, 0x65, 0x21, 0x66, 0x21, 0x67, 0x21, 0x68, 0x21, 0x69, 0x21, 0x6A, 0x21, 0x6B, 0x21, + 0x6C, 0x21, 0x6D, 0x21, 0x6E, 0x21, 0x6F, 0x21, 0x60, 0x21, 0x61, 0x21, 0x62, 0x21, 0x63, 0x21, + 0x64, 0x21, 0x65, 0x21, 0x66, 0x21, 0x67, 0x21, 0x68, 0x21, 0x69, 0x21, 0x6A, 0x21, 0x6B, 0x21, + 0x6C, 0x21, 0x6D, 0x21, 0x6E, 0x21, 0x6F, 0x21, 0x80, 0x21, 0x81, 0x21, 0x82, 0x21, 0x83, 0x21, + 0x83, 0x21, 0xFF, 0xFF, 0x4B, 0x03, 0xB6, 0x24, 0xB7, 0x24, 0xB8, 0x24, 0xB9, 0x24, 0xBA, 0x24, + 0xBB, 0x24, 0xBC, 0x24, 0xBD, 0x24, 0xBE, 0x24, 0xBF, 0x24, 0xC0, 0x24, 0xC1, 0x24, 0xC2, 0x24, + 0xC3, 0x24, 0xC4, 0x24, 0xC5, 0x24, 0xC6, 0x24, 0xC7, 0x24, 0xC8, 0x24, 0xC9, 0x24, 0xCA, 0x24, + 0xCB, 0x24, 0xCC, 0x24, 0xCD, 0x24, 0xCE, 0x24, 0xCF, 0x24, 0xFF, 0xFF, 0x46, 0x07, 0x00, 0x2C, + 0x01, 0x2C, 0x02, 0x2C, 0x03, 0x2C, 0x04, 0x2C, 0x05, 0x2C, 0x06, 0x2C, 0x07, 0x2C, 0x08, 0x2C, + 0x09, 0x2C, 0x0A, 0x2C, 0x0B, 0x2C, 0x0C, 0x2C, 0x0D, 0x2C, 0x0E, 0x2C, 0x0F, 0x2C, 0x10, 0x2C, + 0x11, 0x2C, 0x12, 0x2C, 0x13, 0x2C, 0x14, 0x2C, 0x15, 0x2C, 0x16, 0x2C, 0x17, 0x2C, 0x18, 0x2C, + 0x19, 0x2C, 0x1A, 0x2C, 0x1B, 0x2C, 0x1C, 0x2C, 0x1D, 0x2C, 0x1E, 0x2C, 0x1F, 0x2C, 0x20, 0x2C, + 0x21, 0x2C, 0x22, 0x2C, 0x23, 0x2C, 0x24, 0x2C, 0x25, 0x2C, 0x26, 0x2C, 0x27, 0x2C, 0x28, 0x2C, + 0x29, 0x2C, 0x2A, 0x2C, 0x2B, 0x2C, 0x2C, 0x2C, 0x2D, 0x2C, 0x2E, 0x2C, 0x5F, 0x2C, 0x60, 0x2C, + 0x60, 0x2C, 0x62, 0x2C, 0x63, 0x2C, 0x64, 0x2C, 0x65, 0x2C, 0x66, 0x2C, 0x67, 0x2C, 0x67, 0x2C, + 0x69, 0x2C, 0x69, 0x2C, 0x6B, 0x2C, 0x6B, 0x2C, 0x6D, 0x2C, 0x6E, 0x2C, 0x6F, 0x2C, 0x70, 0x2C, + 0x71, 0x2C, 0x72, 0x2C, 0x73, 0x2C, 0x74, 0x2C, 0x75, 0x2C, 0x75, 0x2C, 0x77, 0x2C, 0x78, 0x2C, + 0x79, 0x2C, 0x7A, 0x2C, 0x7B, 0x2C, 0x7C, 0x2C, 0x7D, 0x2C, 0x7E, 0x2C, 0x7F, 0x2C, 0x80, 0x2C, + 0x80, 0x2C, 0x82, 0x2C, 0x82, 0x2C, 0x84, 0x2C, 0x84, 0x2C, 0x86, 0x2C, 0x86, 0x2C, 0x88, 0x2C, + 0x88, 0x2C, 0x8A, 0x2C, 0x8A, 0x2C, 0x8C, 0x2C, 0x8C, 0x2C, 0x8E, 0x2C, 0x8E, 0x2C, 0x90, 0x2C, + 0x90, 0x2C, 0x92, 0x2C, 0x92, 0x2C, 0x94, 0x2C, 0x94, 0x2C, 0x96, 0x2C, 0x96, 0x2C, 0x98, 0x2C, + 0x98, 0x2C, 0x9A, 0x2C, 0x9A, 0x2C, 0x9C, 0x2C, 0x9C, 0x2C, 0x9E, 0x2C, 0x9E, 0x2C, 0xA0, 0x2C, + 0xA0, 0x2C, 0xA2, 0x2C, 0xA2, 0x2C, 0xA4, 0x2C, 0xA4, 0x2C, 0xA6, 0x2C, 0xA6, 0x2C, 0xA8, 0x2C, + 0xA8, 0x2C, 0xAA, 0x2C, 0xAA, 0x2C, 0xAC, 0x2C, 0xAC, 0x2C, 0xAE, 0x2C, 0xAE, 0x2C, 0xB0, 0x2C, + 0xB0, 0x2C, 0xB2, 0x2C, 0xB2, 0x2C, 0xB4, 0x2C, 0xB4, 0x2C, 0xB6, 0x2C, 0xB6, 0x2C, 0xB8, 0x2C, + 0xB8, 0x2C, 0xBA, 0x2C, 0xBA, 0x2C, 0xBC, 0x2C, 0xBC, 0x2C, 0xBE, 0x2C, 0xBE, 0x2C, 0xC0, 0x2C, + 0xC0, 0x2C, 0xC2, 0x2C, 0xC2, 0x2C, 0xC4, 0x2C, 0xC4, 0x2C, 0xC6, 0x2C, 0xC6, 0x2C, 0xC8, 0x2C, + 0xC8, 0x2C, 0xCA, 0x2C, 0xCA, 0x2C, 0xCC, 0x2C, 0xCC, 0x2C, 0xCE, 0x2C, 0xCE, 0x2C, 0xD0, 0x2C, + 0xD0, 0x2C, 0xD2, 0x2C, 0xD2, 0x2C, 0xD4, 0x2C, 0xD4, 0x2C, 0xD6, 0x2C, 0xD6, 0x2C, 0xD8, 0x2C, + 0xD8, 0x2C, 0xDA, 0x2C, 0xDA, 0x2C, 0xDC, 0x2C, 0xDC, 0x2C, 0xDE, 0x2C, 0xDE, 0x2C, 0xE0, 0x2C, + 0xE0, 0x2C, 0xE2, 0x2C, 0xE2, 0x2C, 0xE4, 0x2C, 0xE5, 0x2C, 0xE6, 0x2C, 0xE7, 0x2C, 0xE8, 0x2C, + 0xE9, 0x2C, 0xEA, 0x2C, 0xEB, 0x2C, 0xEC, 0x2C, 0xED, 0x2C, 0xEE, 0x2C, 0xEF, 0x2C, 0xF0, 0x2C, + 0xF1, 0x2C, 0xF2, 0x2C, 0xF3, 0x2C, 0xF4, 0x2C, 0xF5, 0x2C, 0xF6, 0x2C, 0xF7, 0x2C, 0xF8, 0x2C, + 0xF9, 0x2C, 0xFA, 0x2C, 0xFB, 0x2C, 0xFC, 0x2C, 0xFD, 0x2C, 0xFE, 0x2C, 0xFF, 0x2C, 0xA0, 0x10, + 0xA1, 0x10, 0xA2, 0x10, 0xA3, 0x10, 0xA4, 0x10, 0xA5, 0x10, 0xA6, 0x10, 0xA7, 0x10, 0xA8, 0x10, + 0xA9, 0x10, 0xAA, 0x10, 0xAB, 0x10, 0xAC, 0x10, 0xAD, 0x10, 0xAE, 0x10, 0xAF, 0x10, 0xB0, 0x10, + 0xB1, 0x10, 0xB2, 0x10, 0xB3, 0x10, 0xB4, 0x10, 0xB5, 0x10, 0xB6, 0x10, 0xB7, 0x10, 0xB8, 0x10, + 0xB9, 0x10, 0xBA, 0x10, 0xBB, 0x10, 0xBC, 0x10, 0xBD, 0x10, 0xBE, 0x10, 0xBF, 0x10, 0xC0, 0x10, + 0xC1, 0x10, 0xC2, 0x10, 0xC3, 0x10, 0xC4, 0x10, 0xC5, 0x10, 0xFF, 0xFF, 0x1B, 0xD2, 0x21, 0xFF, + 0x22, 0xFF, 0x23, 0xFF, 0x24, 0xFF, 0x25, 0xFF, 0x26, 0xFF, 0x27, 0xFF, 0x28, 0xFF, 0x29, 0xFF, + 0x2A, 0xFF, 0x2B, 0xFF, 0x2C, 0xFF, 0x2D, 0xFF, 0x2E, 0xFF, 0x2F, 0xFF, 0x30, 0xFF, 0x31, 0xFF, + 0x32, 0xFF, 0x33, 0xFF, 0x34, 0xFF, 0x35, 0xFF, 0x36, 0xFF, 0x37, 0xFF, 0x38, 0xFF, 0x39, 0xFF, + 0x3A, 0xFF, 0x5B, 0xFF, 0x5C, 0xFF, 0x5D, 0xFF, 0x5E, 0xFF, 0x5F, 0xFF, 0x60, 0xFF, 0x61, 0xFF, + 0x62, 0xFF, 0x63, 0xFF, 0x64, 0xFF, 0x65, 0xFF, 0x66, 0xFF, 0x67, 0xFF, 0x68, 0xFF, 0x69, 0xFF, + 0x6A, 0xFF, 0x6B, 0xFF, 0x6C, 0xFF, 0x6D, 0xFF, 0x6E, 0xFF, 0x6F, 0xFF, 0x70, 0xFF, 0x71, 0xFF, + 0x72, 0xFF, 0x73, 0xFF, 0x74, 0xFF, 0x75, 0xFF, 0x76, 0xFF, 0x77, 0xFF, 0x78, 0xFF, 0x79, 0xFF, + 0x7A, 0xFF, 0x7B, 0xFF, 0x7C, 0xFF, 0x7D, 0xFF, 0x7E, 0xFF, 0x7F, 0xFF, 0x80, 0xFF, 0x81, 0xFF, + 0x82, 0xFF, 0x83, 0xFF, 0x84, 0xFF, 0x85, 0xFF, 0x86, 0xFF, 0x87, 0xFF, 0x88, 0xFF, 0x89, 0xFF, + 0x8A, 0xFF, 0x8B, 0xFF, 0x8C, 0xFF, 0x8D, 0xFF, 0x8E, 0xFF, 0x8F, 0xFF, 0x90, 0xFF, 0x91, 0xFF, + 0x92, 0xFF, 0x93, 0xFF, 0x94, 0xFF, 0x95, 0xFF, 0x96, 0xFF, 0x97, 0xFF, 0x98, 0xFF, 0x99, 0xFF, + 0x9A, 0xFF, 0x9B, 0xFF, 0x9C, 0xFF, 0x9D, 0xFF, 0x9E, 0xFF, 0x9F, 0xFF, 0xA0, 0xFF, 0xA1, 0xFF, + 0xA2, 0xFF, 0xA3, 0xFF, 0xA4, 0xFF, 0xA5, 0xFF, 0xA6, 0xFF, 0xA7, 0xFF, 0xA8, 0xFF, 0xA9, 0xFF, + 0xAA, 0xFF, 0xAB, 0xFF, 0xAC, 0xFF, 0xAD, 0xFF, 0xAE, 0xFF, 0xAF, 0xFF, 0xB0, 0xFF, 0xB1, 0xFF, + 0xB2, 0xFF, 0xB3, 0xFF, 0xB4, 0xFF, 0xB5, 0xFF, 0xB6, 0xFF, 0xB7, 0xFF, 0xB8, 0xFF, 0xB9, 0xFF, + 0xBA, 0xFF, 0xBB, 0xFF, 0xBC, 0xFF, 0xBD, 0xFF, 0xBE, 0xFF, 0xBF, 0xFF, 0xC0, 0xFF, 0xC1, 0xFF, + 0xC2, 0xFF, 0xC3, 0xFF, 0xC4, 0xFF, 0xC5, 0xFF, 0xC6, 0xFF, 0xC7, 0xFF, 0xC8, 0xFF, 0xC9, 0xFF, + 0xCA, 0xFF, 0xCB, 0xFF, 0xCC, 0xFF, 0xCD, 0xFF, 0xCE, 0xFF, 0xCF, 0xFF, 0xD0, 0xFF, 0xD1, 0xFF, + 0xD2, 0xFF, 0xD3, 0xFF, 0xD4, 0xFF, 0xD5, 0xFF, 0xD6, 0xFF, 0xD7, 0xFF, 0xD8, 0xFF, 0xD9, 0xFF, + 0xDA, 0xFF, 0xDB, 0xFF, 0xDC, 0xFF, 0xDD, 0xFF, 0xDE, 0xFF, 0xDF, 0xFF, 0xE0, 0xFF, 0xE1, 0xFF, + 0xE2, 0xFF, 0xE3, 0xFF, 0xE4, 0xFF, 0xE5, 0xFF, 0xE6, 0xFF, 0xE7, 0xFF, 0xE8, 0xFF, 0xE9, 0xFF, + 0xEA, 0xFF, 0xEB, 0xFF, 0xEC, 0xFF, 0xED, 0xFF, 0xEE, 0xFF, 0xEF, 0xFF, 0xF0, 0xFF, 0xF1, 0xFF, + 0xF2, 0xFF, 0xF3, 0xFF, 0xF4, 0xFF, 0xF5, 0xFF, 0xF6, 0xFF, 0xF7, 0xFF, 0xF8, 0xFF, 0xF9, 0xFF, + 0xFA, 0xFF, 0xFB, 0xFF, 0xFC, 0xFF, 0xFD, 0xFF, 0xFE, 0xFF, 0xFF, 0xFF +}; diff --git a/fs/exfat/exfat_version.h b/fs/exfat/exfat_version.h new file mode 100644 index 00000000000..a93fa46be04 --- /dev/null +++ b/fs/exfat/exfat_version.h @@ -0,0 +1,19 @@ +/************************************************************************/ +/* */ +/* PROJECT : exFAT & FAT12/16/32 File System */ +/* FILE : exfat_version.h */ +/* PURPOSE : exFAT File Manager */ +/* */ +/*----------------------------------------------------------------------*/ +/* NOTES */ +/* */ +/*----------------------------------------------------------------------*/ +/* REVISION HISTORY */ +/* */ +/* - 2012.02.10 : Release Version 1.1.0 */ +/* - 2012.04.02 : P1 : Change Module License to Samsung Proprietary */ +/* - 2012.06.07 : P2 : Fixed incorrect filename problem */ +/* */ +/************************************************************************/ + +#define EXFAT_VERSION "1.2.9" diff --git a/fs/fcntl.c b/fs/fcntl.c index 12273b6ea56..0237ad7a621 100644 --- a/fs/fcntl.c +++ b/fs/fcntl.c @@ -32,7 +32,7 @@ #define SETFL_MASK (O_APPEND | O_NONBLOCK | O_NDELAY | O_DIRECT | O_NOATIME) -static int setfl(int fd, struct file * filp, unsigned long arg) +int setfl(int fd, struct file * filp, unsigned long arg) { struct inode * inode = file_inode(filp); int error = 0; @@ -63,6 +63,8 @@ static int setfl(int fd, struct file * filp, unsigned long arg) if (filp->f_op->check_flags) error = filp->f_op->check_flags(arg); + if (!error && filp->f_op->setfl) + error = filp->f_op->setfl(filp, arg); if (error) return error; @@ -83,6 +85,7 @@ static int setfl(int fd, struct file * filp, unsigned long arg) out: return error; } +EXPORT_SYMBOL_GPL(setfl); static void f_modown(struct file *filp, struct pid *pid, enum pid_type type, int force) diff --git a/fs/file_table.c b/fs/file_table.c index 7ec0b3e5f05..819ee070503 100644 --- a/fs/file_table.c +++ b/fs/file_table.c @@ -147,6 +147,7 @@ struct file *get_empty_filp(void) } return ERR_PTR(-ENFILE); } +EXPORT_SYMBOL_GPL(get_empty_filp); /** * alloc_file - allocate and initialize a 'struct file' @@ -257,6 +258,7 @@ void flush_delayed_fput(void) { delayed_fput(NULL); } +EXPORT_SYMBOL_GPL(flush_delayed_fput); static DECLARE_DELAYED_WORK(delayed_fput_work, delayed_fput); @@ -299,6 +301,7 @@ void __fput_sync(struct file *file) } EXPORT_SYMBOL(fput); +EXPORT_SYMBOL_GPL(__fput_sync); void put_filp(struct file *file) { @@ -307,6 +310,7 @@ void put_filp(struct file *file) file_free(file); } } +EXPORT_SYMBOL_GPL(put_filp); void __init files_init(void) { diff --git a/fs/inode.c b/fs/inode.c index 8c86c809ca1..169811b82ba 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -1649,7 +1649,7 @@ EXPORT_SYMBOL(generic_update_time); * This does the actual work of updating an inodes time or version. Must have * had called mnt_want_write() before calling this. */ -static int update_time(struct inode *inode, struct timespec64 *time, int flags) +int update_time(struct inode *inode, struct timespec64 *time, int flags) { int (*update_time)(struct inode *, struct timespec64 *, int); @@ -1658,6 +1658,7 @@ static int update_time(struct inode *inode, struct timespec64 *time, int flags) return update_time(inode, time, flags); } +EXPORT_SYMBOL_GPL(update_time); /** * touch_atime - update the access time diff --git a/fs/namespace.c b/fs/namespace.c index bd2f4c68506..c5364581653 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -517,6 +517,7 @@ void __mnt_drop_write(struct vfsmount *mnt) mnt_dec_writers(real_mount(mnt)); preempt_enable(); } +EXPORT_SYMBOL_GPL(__mnt_drop_write); /** * mnt_drop_write - give up write access to a mount @@ -855,6 +856,13 @@ static inline int check_mnt(struct mount *mnt) return mnt->mnt_ns == current->nsproxy->mnt_ns; } +/* for aufs, CONFIG_AUFS_BR_FUSE */ +int is_current_mnt_ns(struct vfsmount *mnt) +{ + return check_mnt(real_mount(mnt)); +} +EXPORT_SYMBOL_GPL(is_current_mnt_ns); + /* * vfsmount lock must be held for write */ @@ -1911,6 +1919,7 @@ int iterate_mounts(int (*f)(struct vfsmount *, void *), void *arg, } return 0; } +EXPORT_SYMBOL_GPL(iterate_mounts); static void cleanup_group_ids(struct mount *mnt, struct mount *end) { diff --git a/fs/notify/group.c b/fs/notify/group.c index aa5468f23e4..b38d224133e 100644 --- a/fs/notify/group.c +++ b/fs/notify/group.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include "fsnotify.h" @@ -109,6 +110,7 @@ void fsnotify_get_group(struct fsnotify_group *group) { refcount_inc(&group->refcnt); } +EXPORT_SYMBOL_GPL(fsnotify_get_group); /* * Drop a reference to a group. Free it if it's through. @@ -118,6 +120,7 @@ void fsnotify_put_group(struct fsnotify_group *group) if (refcount_dec_and_test(&group->refcnt)) fsnotify_final_destroy_group(group); } +EXPORT_SYMBOL_GPL(fsnotify_put_group); /* * Create a new fsnotify_group and hold a reference for the group returned. @@ -147,6 +150,7 @@ struct fsnotify_group *fsnotify_alloc_group(const struct fsnotify_ops *ops) return group; } +EXPORT_SYMBOL_GPL(fsnotify_alloc_group); int fsnotify_fasync(int fd, struct file *file, int on) { diff --git a/fs/notify/mark.c b/fs/notify/mark.c index 61f4c5fa34c..855c65581b8 100644 --- a/fs/notify/mark.c +++ b/fs/notify/mark.c @@ -245,6 +245,7 @@ void fsnotify_put_mark(struct fsnotify_mark *mark) queue_delayed_work(system_unbound_wq, &reaper_work, FSNOTIFY_REAPER_DELAY); } +EXPORT_SYMBOL_GPL(fsnotify_put_mark); /* * Get mark reference when we found the mark via lockless traversal of object @@ -399,6 +400,7 @@ void fsnotify_destroy_mark(struct fsnotify_mark *mark, mutex_unlock(&group->mark_mutex); fsnotify_free_mark(mark); } +EXPORT_SYMBOL_GPL(fsnotify_destroy_mark); /* * Sorting function for lists of fsnotify marks. @@ -624,6 +626,7 @@ int fsnotify_add_mark(struct fsnotify_mark *mark, struct inode *inode, mutex_unlock(&group->mark_mutex); return ret; } +EXPORT_SYMBOL_GPL(fsnotify_add_mark); /* * Given a list of marks, find the mark associated with given group. If found @@ -747,6 +750,7 @@ void fsnotify_init_mark(struct fsnotify_mark *mark, fsnotify_get_group(group); mark->group = group; } +EXPORT_SYMBOL_GPL(fsnotify_init_mark); /* * Destroy all marks in destroy_list, waits for SRCU period to finish before diff --git a/fs/open.c b/fs/open.c index d0e955b558a..b72d2ab1146 100644 --- a/fs/open.c +++ b/fs/open.c @@ -34,6 +34,9 @@ #include "internal.h" +#define CREATE_TRACE_POINTS +#include + int do_truncate(struct dentry *dentry, loff_t length, unsigned int time_attrs, struct file *filp) { @@ -64,6 +67,7 @@ int do_truncate(struct dentry *dentry, loff_t length, unsigned int time_attrs, inode_unlock(dentry->d_inode); return ret; } +EXPORT_SYMBOL_GPL(do_truncate); long vfs_truncate(const struct path *path, loff_t length) { @@ -723,6 +727,7 @@ SYSCALL_DEFINE3(fchown, unsigned int, fd, uid_t, user, gid_t, group) { return ksys_fchown(fd, user, group); } +EXPORT_SYMBOL_GPL(open_check_o_direct); int open_check_o_direct(struct file *f) { @@ -1105,6 +1110,7 @@ long do_sys_open(int dfd, const char __user *filename, int flags, umode_t mode) } else { fsnotify_open(f); fd_install(fd, f); + trace_do_sys_open(tmp->name, flags, mode); } } putname(tmp); diff --git a/fs/proc/base.c b/fs/proc/base.c index aaffc0c3021..7b8fe799c15 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -445,7 +445,7 @@ static int proc_pid_schedstat(struct seq_file *m, struct pid_namespace *ns, seq_printf(m, "0 0 0\n"); else seq_printf(m, "%llu %llu %lu\n", - (unsigned long long)task->se.sum_exec_runtime, + (unsigned long long)tsk_seruntime(task), (unsigned long long)task->sched_info.run_delay, task->sched_info.pcount); @@ -2004,7 +2004,7 @@ static int map_files_get_link(struct dentry *dentry, struct path *path) down_read(&mm->mmap_sem); vma = find_exact_vma(mm, vm_start, vm_end); if (vma && vma->vm_file) { - *path = vma->vm_file->f_path; + *path = vma_pr_or_file(vma)->f_path; path_get(path); rc = 0; } diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c index 2fb04846ed1..a5eb30d5af6 100644 --- a/fs/proc/meminfo.c +++ b/fs/proc/meminfo.c @@ -105,6 +105,10 @@ static int meminfo_proc_show(struct seq_file *m, void *v) global_zone_page_state(NR_KERNEL_STACK_KB)); show_val_kb(m, "PageTables: ", global_zone_page_state(NR_PAGETABLE)); +#ifdef CONFIG_UKSM + show_val_kb(m, "KsmZeroPages: ", + global_zone_page_state(NR_UKSM_ZERO_PAGES)); +#endif #ifdef CONFIG_QUICKLIST show_val_kb(m, "Quicklists: ", quicklist_total_size()); #endif diff --git a/fs/proc/nommu.c b/fs/proc/nommu.c index 3b63be64e43..fb9913bf3d1 100644 --- a/fs/proc/nommu.c +++ b/fs/proc/nommu.c @@ -45,7 +45,10 @@ static int nommu_region_show(struct seq_file *m, struct vm_region *region) file = region->vm_file; if (file) { - struct inode *inode = file_inode(region->vm_file); + struct inode *inode; + + file = vmr_pr_or_file(region); + inode = file_inode(file); dev = inode->i_sb->s_dev; ino = inode->i_ino; } diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index dfd73a4616c..ed2ce103e27 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -306,7 +306,10 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid) const char *name = NULL; if (file) { - struct inode *inode = file_inode(vma->vm_file); + struct inode *inode; + + file = vma_pr_or_file(vma); + inode = file_inode(file); dev = inode->i_sb->s_dev; ino = inode->i_ino; pgoff = ((loff_t)vma->vm_pgoff) << PAGE_SHIFT; @@ -1734,7 +1737,7 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid) struct proc_maps_private *proc_priv = &numa_priv->proc_maps; struct vm_area_struct *vma = v; struct numa_maps *md = &numa_priv->md; - struct file *file = vma->vm_file; + struct file *file = vma_pr_or_file(vma); struct mm_struct *mm = vma->vm_mm; struct mm_walk walk = { .hugetlb_entry = gather_hugetlb_stats, diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c index 5b62f57bd9b..dfb4a3bd0fa 100644 --- a/fs/proc/task_nommu.c +++ b/fs/proc/task_nommu.c @@ -156,7 +156,10 @@ static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma, file = vma->vm_file; if (file) { - struct inode *inode = file_inode(vma->vm_file); + struct inode *inode; + + file = vma_pr_or_file(vma); + inode = file_inode(file); dev = inode->i_sb->s_dev; ino = inode->i_ino; pgoff = (loff_t)vma->vm_pgoff << PAGE_SHIFT; diff --git a/fs/read_write.c b/fs/read_write.c index 153f8f69049..36f52f4e6e2 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -459,6 +459,7 @@ ssize_t vfs_read(struct file *file, char __user *buf, size_t count, loff_t *pos) return ret; } +EXPORT_SYMBOL_GPL(vfs_read); static ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos) { @@ -489,6 +490,30 @@ ssize_t __vfs_write(struct file *file, const char __user *p, size_t count, return -EINVAL; } +vfs_readf_t vfs_readf(struct file *file) +{ + const struct file_operations *fop = file->f_op; + + if (fop->read) + return fop->read; + if (fop->read_iter) + return new_sync_read; + return ERR_PTR(-ENOSYS); +} +EXPORT_SYMBOL_GPL(vfs_readf); + +vfs_writef_t vfs_writef(struct file *file) +{ + const struct file_operations *fop = file->f_op; + + if (fop->write) + return fop->write; + if (fop->write_iter) + return new_sync_write; + return ERR_PTR(-ENOSYS); +} +EXPORT_SYMBOL_GPL(vfs_writef); + ssize_t __kernel_write(struct file *file, const void *buf, size_t count, loff_t *pos) { mm_segment_t old_fs; @@ -557,6 +582,7 @@ ssize_t vfs_write(struct file *file, const char __user *buf, size_t count, loff_ return ret; } +EXPORT_SYMBOL_GPL(vfs_write); static inline loff_t file_pos_read(struct file *file) { diff --git a/fs/splice.c b/fs/splice.c index b3daa971f59..a5e3bcba0ea 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -838,8 +838,8 @@ EXPORT_SYMBOL(generic_splice_sendpage); /* * Attempt to initiate a splice from pipe to file. */ -static long do_splice_from(struct pipe_inode_info *pipe, struct file *out, - loff_t *ppos, size_t len, unsigned int flags) +long do_splice_from(struct pipe_inode_info *pipe, struct file *out, + loff_t *ppos, size_t len, unsigned int flags) { ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int); @@ -851,13 +851,14 @@ static long do_splice_from(struct pipe_inode_info *pipe, struct file *out, return splice_write(pipe, out, ppos, len, flags); } +EXPORT_SYMBOL_GPL(do_splice_from); /* * Attempt to initiate a splice from a file to a pipe. */ -static long do_splice_to(struct file *in, loff_t *ppos, - struct pipe_inode_info *pipe, size_t len, - unsigned int flags) +long do_splice_to(struct file *in, loff_t *ppos, + struct pipe_inode_info *pipe, size_t len, + unsigned int flags) { ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int); @@ -880,6 +881,7 @@ static long do_splice_to(struct file *in, loff_t *ppos, return splice_read(in, ppos, pipe, len, flags); } +EXPORT_SYMBOL_GPL(do_splice_to); /** * splice_direct_to_actor - splices data directly between two non-pipes diff --git a/fs/sync.c b/fs/sync.c index b54e0541ad8..ffd7ea43831 100644 --- a/fs/sync.c +++ b/fs/sync.c @@ -28,7 +28,7 @@ * wait == 1 case since in that case write_inode() functions do * sync_dirty_buffer() and thus effectively write one block at a time. */ -static int __sync_filesystem(struct super_block *sb, int wait) +int __sync_filesystem(struct super_block *sb, int wait) { if (wait) sync_inodes_sb(sb); @@ -39,6 +39,7 @@ static int __sync_filesystem(struct super_block *sb, int wait) sb->s_op->sync_fs(sb, wait); return __sync_blockdev(sb->s_bdev, wait); } +EXPORT_SYMBOL_GPL(__sync_filesystem); /* * Write out and wait upon all dirty data associated with this diff --git a/fs/xattr.c b/fs/xattr.c index f9cb1db187b..000b62b1b2a 100644 --- a/fs/xattr.c +++ b/fs/xattr.c @@ -296,6 +296,7 @@ vfs_getxattr_alloc(struct dentry *dentry, const char *name, char **xattr_value, *xattr_value = value; return error; } +EXPORT_SYMBOL_GPL(vfs_getxattr_alloc); ssize_t __vfs_getxattr(struct dentry *dentry, struct inode *inode, const char *name, diff --git a/include/Documentation/ABI/testing/debugfs-aufs b/include/Documentation/ABI/testing/debugfs-aufs new file mode 100644 index 00000000000..99642d1055a --- /dev/null +++ b/include/Documentation/ABI/testing/debugfs-aufs @@ -0,0 +1,50 @@ +What: /debug/aufs/si_/ +Date: March 2009 +Contact: J. R. Okajima +Description: + Under /debug/aufs, a directory named si_ is created + per aufs mount, where is a unique id generated + internally. + +What: /debug/aufs/si_/plink +Date: Apr 2013 +Contact: J. R. Okajima +Description: + It has three lines and shows the information about the + pseudo-link. The first line is a single number + representing a number of buckets. The second line is a + number of pseudo-links per buckets (separated by a + blank). The last line is a single number representing a + total number of psedo-links. + When the aufs mount option 'noplink' is specified, it + will show "1\n0\n0\n". + +What: /debug/aufs/si_/xib +Date: March 2009 +Contact: J. R. Okajima +Description: + It shows the consumed blocks by xib (External Inode Number + Bitmap), its block size and file size. + When the aufs mount option 'noxino' is specified, it + will be empty. About XINO files, see the aufs manual. + +What: /debug/aufs/si_/xino0, xino1 ... xinoN +Date: March 2009 +Contact: J. R. Okajima +Description: + It shows the consumed blocks by xino (External Inode Number + Translation Table), its link count, block size and file + size. + When the aufs mount option 'noxino' is specified, it + will be empty. About XINO files, see the aufs manual. + +What: /debug/aufs/si_/xigen +Date: March 2009 +Contact: J. R. Okajima +Description: + It shows the consumed blocks by xigen (External Inode + Generation Table), its block size and file size. + If CONFIG_AUFS_EXPORT is disabled, this entry will not + be created. + When the aufs mount option 'noxino' is specified, it + will be empty. About XINO files, see the aufs manual. diff --git a/include/Documentation/ABI/testing/sysfs-aufs b/include/Documentation/ABI/testing/sysfs-aufs new file mode 100644 index 00000000000..82f9518495e --- /dev/null +++ b/include/Documentation/ABI/testing/sysfs-aufs @@ -0,0 +1,31 @@ +What: /sys/fs/aufs/si_/ +Date: March 2009 +Contact: J. R. Okajima +Description: + Under /sys/fs/aufs, a directory named si_ is created + per aufs mount, where is a unique id generated + internally. + +What: /sys/fs/aufs/si_/br0, br1 ... brN +Date: March 2009 +Contact: J. R. Okajima +Description: + It shows the abolute path of a member directory (which + is called branch) in aufs, and its permission. + +What: /sys/fs/aufs/si_/brid0, brid1 ... bridN +Date: July 2013 +Contact: J. R. Okajima +Description: + It shows the id of a member directory (which is called + branch) in aufs. + +What: /sys/fs/aufs/si_/xi_path +Date: March 2009 +Contact: J. R. Okajima +Description: + It shows the abolute path of XINO (External Inode Number + Bitmap, Translation Table and Generation Table) file + even if it is the default path. + When the aufs mount option 'noxino' is specified, it + will be empty. About XINO files, see the aufs manual. diff --git a/include/Documentation/filesystems/aufs/README b/include/Documentation/filesystems/aufs/README new file mode 100644 index 00000000000..fa82b6394f6 --- /dev/null +++ b/include/Documentation/filesystems/aufs/README @@ -0,0 +1,393 @@ + +Aufs4 -- advanced multi layered unification filesystem version 4.x +http://aufs.sf.net +Junjiro R. Okajima + + +0. Introduction +---------------------------------------- +In the early days, aufs was entirely re-designed and re-implemented +Unionfs Version 1.x series. Adding many original ideas, approaches, +improvements and implementations, it becomes totally different from +Unionfs while keeping the basic features. +Recently, Unionfs Version 2.x series begin taking some of the same +approaches to aufs1's. +Unionfs is being developed by Professor Erez Zadok at Stony Brook +University and his team. + +Aufs4 supports linux-4.0 and later, and for linux-3.x series try aufs3. +If you want older kernel version support, try aufs2-2.6.git or +aufs2-standalone.git repository, aufs1 from CVS on SourceForge. + +Note: it becomes clear that "Aufs was rejected. Let's give it up." + According to Christoph Hellwig, linux rejects all union-type + filesystems but UnionMount. + + +PS. Al Viro seems have a plan to merge aufs as well as overlayfs and + UnionMount, and he pointed out an issue around a directory mutex + lock and aufs addressed it. But it is still unsure whether aufs will + be merged (or any other union solution). + + + +1. Features +---------------------------------------- +- unite several directories into a single virtual filesystem. The member + directory is called as a branch. +- you can specify the permission flags to the branch, which are 'readonly', + 'readwrite' and 'whiteout-able.' +- by upper writable branch, internal copyup and whiteout, files/dirs on + readonly branch are modifiable logically. +- dynamic branch manipulation, add, del. +- etc... + +Also there are many enhancements in aufs, such as: +- test only the highest one for the directory permission (dirperm1) +- copyup on open (coo=) +- 'move' policy for copy-up between two writable branches, after + checking free space. +- xattr, acl +- readdir(3) in userspace. +- keep inode number by external inode number table +- keep the timestamps of file/dir in internal copyup operation +- seekable directory, supporting NFS readdir. +- whiteout is hardlinked in order to reduce the consumption of inodes + on branch +- do not copyup, nor create a whiteout when it is unnecessary +- revert a single systemcall when an error occurs in aufs +- remount interface instead of ioctl +- maintain /etc/mtab by an external command, /sbin/mount.aufs. +- loopback mounted filesystem as a branch +- kernel thread for removing the dir who has a plenty of whiteouts +- support copyup sparse file (a file which has a 'hole' in it) +- default permission flags for branches +- selectable permission flags for ro branch, whether whiteout can + exist or not +- export via NFS. +- support /fs/aufs and /aufs. +- support multiple writable branches, some policies to select one + among multiple writable branches. +- a new semantics for link(2) and rename(2) to support multiple + writable branches. +- no glibc changes are required. +- pseudo hardlink (hardlink over branches) +- allow a direct access manually to a file on branch, e.g. bypassing aufs. + including NFS or remote filesystem branch. +- userspace wrapper for pathconf(3)/fpathconf(3) with _PC_LINK_MAX. +- and more... + +Currently these features are dropped temporary from aufs4. +See design/08plan.txt in detail. +- nested mount, i.e. aufs as readonly no-whiteout branch of another aufs + (robr) +- statistics of aufs thread (/sys/fs/aufs/stat) + +Features or just an idea in the future (see also design/*.txt), +- reorder the branch index without del/re-add. +- permanent xino files for NFSD +- an option for refreshing the opened files after add/del branches +- light version, without branch manipulation. (unnecessary?) +- copyup in userspace +- inotify in userspace +- readv/writev + + +2. Download +---------------------------------------- +There are three GIT trees for aufs4, aufs4-linux.git, +aufs4-standalone.git, and aufs-util.git. Note that there is no "4" in +"aufs-util.git." +While the aufs-util is always necessary, you need either of aufs4-linux +or aufs4-standalone. + +The aufs4-linux tree includes the whole linux mainline GIT tree, +git://git.kernel.org/.../torvalds/linux.git. +And you cannot select CONFIG_AUFS_FS=m for this version, eg. you cannot +build aufs4 as an external kernel module. +Several extra patches are not included in this tree. Only +aufs4-standalone tree contains them. They are described in the later +section "Configuration and Compilation." + +On the other hand, the aufs4-standalone tree has only aufs source files +and necessary patches, and you can select CONFIG_AUFS_FS=m. +But you need to apply all aufs patches manually. + +You will find GIT branches whose name is in form of "aufs4.x" where "x" +represents the linux kernel version, "linux-4.x". For instance, +"aufs4.0" is for linux-4.0. For latest "linux-4.x-rcN", use +"aufs4.x-rcN" branch. + +o aufs4-linux tree +$ git clone --reference /your/linux/git/tree \ + git://github.com/sfjro/aufs4-linux.git aufs4-linux.git +- if you don't have linux GIT tree, then remove "--reference ..." +$ cd aufs4-linux.git +$ git checkout origin/aufs4.0 + +Or You may want to directly git-pull aufs into your linux GIT tree, and +leave the patch-work to GIT. +$ cd /your/linux/git/tree +$ git remote add aufs4 git://github.com/sfjro/aufs4-linux.git +$ git fetch aufs4 +$ git checkout -b my4.0 v4.0 +$ (add your local change...) +$ git pull aufs4 aufs4.0 +- now you have v4.0 + your_changes + aufs4.0 in you my4.0 branch. +- you may need to solve some conflicts between your_changes and + aufs4.0. in this case, git-rerere is recommended so that you can + solve the similar conflicts automatically when you upgrade to 4.1 or + later in the future. + +o aufs4-standalone tree +$ git clone git://github.com/sfjro/aufs4-standalone.git aufs4-standalone.git +$ cd aufs4-standalone.git +$ git checkout origin/aufs4.0 + +o aufs-util tree +$ git clone git://git.code.sf.net/p/aufs/aufs-util aufs-util.git +- note that the public aufs-util.git is on SourceForge instead of + GitHUB. +$ cd aufs-util.git +$ git checkout origin/aufs4.0 + +Note: The 4.x-rcN branch is to be used with `rc' kernel versions ONLY. +The minor version number, 'x' in '4.x', of aufs may not always +follow the minor version number of the kernel. +Because changes in the kernel that cause the use of a new +minor version number do not always require changes to aufs-util. + +Since aufs-util has its own minor version number, you may not be +able to find a GIT branch in aufs-util for your kernel's +exact minor version number. +In this case, you should git-checkout the branch for the +nearest lower number. + +For (an unreleased) example: +If you are using "linux-4.10" and the "aufs4.10" branch +does not exist in aufs-util repository, then "aufs4.9", "aufs4.8" +or something numerically smaller is the branch for your kernel. + +Also you can view all branches by + $ git branch -a + + +3. Configuration and Compilation +---------------------------------------- +Make sure you have git-checkout'ed the correct branch. + +For aufs4-linux tree, +- enable CONFIG_AUFS_FS. +- set other aufs configurations if necessary. + +For aufs4-standalone tree, +There are several ways to build. + +1. +- apply ./aufs4-kbuild.patch to your kernel source files. +- apply ./aufs4-base.patch too. +- apply ./aufs4-mmap.patch too. +- apply ./aufs4-standalone.patch too, if you have a plan to set + CONFIG_AUFS_FS=m. otherwise you don't need ./aufs4-standalone.patch. +- copy ./{Documentation,fs,include/uapi/linux/aufs_type.h} files to your + kernel source tree. Never copy $PWD/include/uapi/linux/Kbuild. +- enable CONFIG_AUFS_FS, you can select either + =m or =y. +- and build your kernel as usual. +- install the built kernel. + Note: Since linux-3.9, every filesystem module requires an alias + "fs-". You should make sure that "fs-aufs" is listed in your + modules.aliases file if you set CONFIG_AUFS_FS=m. +- install the header files too by "make headers_install" to the + directory where you specify. By default, it is $PWD/usr. + "make help" shows a brief note for headers_install. +- and reboot your system. + +2. +- module only (CONFIG_AUFS_FS=m). +- apply ./aufs4-base.patch to your kernel source files. +- apply ./aufs4-mmap.patch too. +- apply ./aufs4-standalone.patch too. +- build your kernel, don't forget "make headers_install", and reboot. +- edit ./config.mk and set other aufs configurations if necessary. + Note: You should read $PWD/fs/aufs/Kconfig carefully which describes + every aufs configurations. +- build the module by simple "make". + Note: Since linux-3.9, every filesystem module requires an alias + "fs-". You should make sure that "fs-aufs" is listed in your + modules.aliases file. +- you can specify ${KDIR} make variable which points to your kernel + source tree. +- install the files + + run "make install" to install the aufs module, or copy the built + $PWD/aufs.ko to /lib/modules/... and run depmod -a (or reboot simply). + + run "make install_headers" (instead of headers_install) to install + the modified aufs header file (you can specify DESTDIR which is + available in aufs standalone version's Makefile only), or copy + $PWD/usr/include/linux/aufs_type.h to /usr/include/linux or wherever + you like manually. By default, the target directory is $PWD/usr. +- no need to apply aufs4-kbuild.patch, nor copying source files to your + kernel source tree. + +Note: The header file aufs_type.h is necessary to build aufs-util + as well as "make headers_install" in the kernel source tree. + headers_install is subject to be forgotten, but it is essentially + necessary, not only for building aufs-util. + You may not meet problems without headers_install in some older + version though. + +And then, +- read README in aufs-util, build and install it +- note that your distribution may contain an obsoleted version of + aufs_type.h in /usr/include/linux or something. When you build aufs + utilities, make sure that your compiler refers the correct aufs header + file which is built by "make headers_install." +- if you want to use readdir(3) in userspace or pathconf(3) wrapper, + then run "make install_ulib" too. And refer to the aufs manual in + detail. + +There several other patches in aufs4-standalone.git. They are all +optional. When you meet some problems, they will help you. +- aufs4-loopback.patch + Supports a nested loopback mount in a branch-fs. This patch is + unnecessary until aufs produces a message like "you may want to try + another patch for loopback file". +- vfs-ino.patch + Modifies a system global kernel internal function get_next_ino() in + order to stop assigning 0 for an inode-number. Not directly related to + aufs, but recommended generally. +- tmpfs-idr.patch + Keeps the tmpfs inode number as the lowest value. Effective to reduce + the size of aufs XINO files for tmpfs branch. Also it prevents the + duplication of inode number, which is important for backup tools and + other utilities. When you find aufs XINO files for tmpfs branch + growing too much, try this patch. +- lockdep-debug.patch + Because aufs is not only an ordinary filesystem (callee of VFS), but + also a caller of VFS functions for branch filesystems, subclassing of + the internal locks for LOCKDEP is necessary. LOCKDEP is a debugging + feature of linux kernel. If you enable CONFIG_LOCKDEP, then you will + need to apply this debug patch to expand several constant values. + If don't know what LOCKDEP, then you don't have apply this patch. + + +4. Usage +---------------------------------------- +At first, make sure aufs-util are installed, and please read the aufs +manual, aufs.5 in aufs-util.git tree. +$ man -l aufs.5 + +And then, +$ mkdir /tmp/rw /tmp/aufs +# mount -t aufs -o br=/tmp/rw:${HOME} none /tmp/aufs + +Here is another example. The result is equivalent. +# mount -t aufs -o br=/tmp/rw=rw:${HOME}=ro none /tmp/aufs + Or +# mount -t aufs -o br:/tmp/rw none /tmp/aufs +# mount -o remount,append:${HOME} /tmp/aufs + +Then, you can see whole tree of your home dir through /tmp/aufs. If +you modify a file under /tmp/aufs, the one on your home directory is +not affected, instead the same named file will be newly created under +/tmp/rw. And all of your modification to a file will be applied to +the one under /tmp/rw. This is called the file based Copy on Write +(COW) method. +Aufs mount options are described in aufs.5. +If you run chroot or something and make your aufs as a root directory, +then you need to customize the shutdown script. See the aufs manual in +detail. + +Additionally, there are some sample usages of aufs which are a +diskless system with network booting, and LiveCD over NFS. +See sample dir in CVS tree on SourceForge. + + +5. Contact +---------------------------------------- +When you have any problems or strange behaviour in aufs, please let me +know with: +- /proc/mounts (instead of the output of mount(8)) +- /sys/module/aufs/* +- /sys/fs/aufs/* (if you have them) +- /debug/aufs/* (if you have them) +- linux kernel version + if your kernel is not plain, for example modified by distributor, + the url where i can download its source is necessary too. +- aufs version which was printed at loading the module or booting the + system, instead of the date you downloaded. +- configuration (define/undefine CONFIG_AUFS_xxx) +- kernel configuration or /proc/config.gz (if you have it) +- behaviour which you think to be incorrect +- actual operation, reproducible one is better +- mailto: aufs-users at lists.sourceforge.net + +Usually, I don't watch the Public Areas(Bugs, Support Requests, Patches, +and Feature Requests) on SourceForge. Please join and write to +aufs-users ML. + + +6. Acknowledgements +---------------------------------------- +Thanks to everyone who have tried and are using aufs, whoever +have reported a bug or any feedback. + +Especially donators: +Tomas Matejicek(slax.org) made a donation (much more than once). + Since Apr 2010, Tomas M (the author of Slax and Linux Live + scripts) is making "doubling" donations. + Unfortunately I cannot list all of the donators, but I really + appreciate. + It ends Aug 2010, but the ordinary donation URL is still available. + +Dai Itasaka made a donation (2007/8). +Chuck Smith made a donation (2008/4, 10 and 12). +Henk Schoneveld made a donation (2008/9). +Chih-Wei Huang, ASUS, CTC donated Eee PC 4G (2008/10). +Francois Dupoux made a donation (2008/11). +Bruno Cesar Ribas and Luis Carlos Erpen de Bona, C3SL serves public + aufs2 GIT tree (2009/2). +William Grant made a donation (2009/3). +Patrick Lane made a donation (2009/4). +The Mail Archive (mail-archive.com) made donations (2009/5). +Nippy Networks (Ed Wildgoose) made a donation (2009/7). +New Dream Network, LLC (www.dreamhost.com) made a donation (2009/11). +Pavel Pronskiy made a donation (2011/2). +Iridium and Inmarsat satellite phone retailer (www.mailasail.com), Nippy + Networks (Ed Wildgoose) made a donation for hardware (2011/3). +Max Lekomcev (DOM-TV project) made a donation (2011/7, 12, 2012/3, 6 and +11). +Sam Liddicott made a donation (2011/9). +Era Scarecrow made a donation (2013/4). +Bor Ratajc made a donation (2013/4). +Alessandro Gorreta made a donation (2013/4). +POIRETTE Marc made a donation (2013/4). +Alessandro Gorreta made a donation (2013/4). +lauri kasvandik made a donation (2013/5). +"pemasu from Finland" made a donation (2013/7). +The Parted Magic Project made a donation (2013/9 and 11). +Pavel Barta made a donation (2013/10). +Nikolay Pertsev made a donation (2014/5). +James B made a donation (2014/7 and 2015/7). +Stefano Di Biase made a donation (2014/8). +Daniel Epellei made a donation (2015/1). +OmegaPhil made a donation (2016/1). +Tomasz Szewczyk made a donation (2016/4). +James Burry made a donation (2016/12). + +Thank you very much. +Donations are always, including future donations, very important and +helpful for me to keep on developing aufs. + + +7. +---------------------------------------- +If you are an experienced user, no explanation is needed. Aufs is +just a linux filesystem. + + +Enjoy! + +# Local variables: ; +# mode: text; +# End: ; diff --git a/include/Documentation/filesystems/aufs/design/01intro.txt b/include/Documentation/filesystems/aufs/design/01intro.txt new file mode 100644 index 00000000000..aa10529823e --- /dev/null +++ b/include/Documentation/filesystems/aufs/design/01intro.txt @@ -0,0 +1,171 @@ + +# Copyright (C) 2005-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +Introduction +---------------------------------------- + +aufs [ei ju: ef es] | /ey-yoo-ef-es/ | [a u f s] +1. abbrev. for "advanced multi-layered unification filesystem". +2. abbrev. for "another unionfs". +3. abbrev. for "auf das" in German which means "on the" in English. + Ex. "Butter aufs Brot"(G) means "butter onto bread"(E). + But "Filesystem aufs Filesystem" is hard to understand. +4. abbrev. for "African Urban Fashion Show". + +AUFS is a filesystem with features: +- multi layered stackable unification filesystem, the member directory + is called as a branch. +- branch permission and attribute, 'readonly', 'real-readonly', + 'readwrite', 'whiteout-able', 'link-able whiteout', etc. and their + combination. +- internal "file copy-on-write". +- logical deletion, whiteout. +- dynamic branch manipulation, adding, deleting and changing permission. +- allow bypassing aufs, user's direct branch access. +- external inode number translation table and bitmap which maintains the + persistent aufs inode number. +- seekable directory, including NFS readdir. +- file mapping, mmap and sharing pages. +- pseudo-link, hardlink over branches. +- loopback mounted filesystem as a branch. +- several policies to select one among multiple writable branches. +- revert a single systemcall when an error occurs in aufs. +- and more... + + +Multi Layered Stackable Unification Filesystem +---------------------------------------------------------------------- +Most people already knows what it is. +It is a filesystem which unifies several directories and provides a +merged single directory. When users access a file, the access will be +passed/re-directed/converted (sorry, I am not sure which English word is +correct) to the real file on the member filesystem. The member +filesystem is called 'lower filesystem' or 'branch' and has a mode +'readonly' and 'readwrite.' And the deletion for a file on the lower +readonly branch is handled by creating 'whiteout' on the upper writable +branch. + +On LKML, there have been discussions about UnionMount (Jan Blunck, +Bharata B Rao and Valerie Aurora) and Unionfs (Erez Zadok). They took +different approaches to implement the merged-view. +The former tries putting it into VFS, and the latter implements as a +separate filesystem. +(If I misunderstand about these implementations, please let me know and +I shall correct it. Because it is a long time ago when I read their +source files last time). + +UnionMount's approach will be able to small, but may be hard to share +branches between several UnionMount since the whiteout in it is +implemented in the inode on branch filesystem and always +shared. According to Bharata's post, readdir does not seems to be +finished yet. +There are several missing features known in this implementations such as +- for users, the inode number may change silently. eg. copy-up. +- link(2) may break by copy-up. +- read(2) may get an obsoleted filedata (fstat(2) too). +- fcntl(F_SETLK) may be broken by copy-up. +- unnecessary copy-up may happen, for example mmap(MAP_PRIVATE) after + open(O_RDWR). + +In linux-3.18, "overlay" filesystem (formerly known as "overlayfs") was +merged into mainline. This is another implementation of UnionMount as a +separated filesystem. All the limitations and known problems which +UnionMount are equally inherited to "overlay" filesystem. + +Unionfs has a longer history. When I started implementing a stackable +filesystem (Aug 2005), it already existed. It has virtual super_block, +inode, dentry and file objects and they have an array pointing lower +same kind objects. After contributing many patches for Unionfs, I +re-started my project AUFS (Jun 2006). + +In AUFS, the structure of filesystem resembles to Unionfs, but I +implemented my own ideas, approaches and enhancements and it became +totally different one. + +Comparing DM snapshot and fs based implementation +- the number of bytes to be copied between devices is much smaller. +- the type of filesystem must be one and only. +- the fs must be writable, no readonly fs, even for the lower original + device. so the compression fs will not be usable. but if we use + loopback mount, we may address this issue. + for instance, + mount /cdrom/squashfs.img /sq + losetup /sq/ext2.img + losetup /somewhere/cow + dmsetup "snapshot /dev/loop0 /dev/loop1 ..." +- it will be difficult (or needs more operations) to extract the + difference between the original device and COW. +- DM snapshot-merge may help a lot when users try merging. in the + fs-layer union, users will use rsync(1). + +You may want to read my old paper "Filesystems in LiveCD" +(http://aufs.sourceforge.net/aufs2/report/sq/sq.pdf). + + +Several characters/aspects/persona of aufs +---------------------------------------------------------------------- + +Aufs has several characters, aspects or persona. +1. a filesystem, callee of VFS helper +2. sub-VFS, caller of VFS helper for branches +3. a virtual filesystem which maintains persistent inode number +4. reader/writer of files on branches such like an application + +1. Callee of VFS Helper +As an ordinary linux filesystem, aufs is a callee of VFS. For instance, +unlink(2) from an application reaches sys_unlink() kernel function and +then vfs_unlink() is called. vfs_unlink() is one of VFS helper and it +calls filesystem specific unlink operation. Actually aufs implements the +unlink operation but it behaves like a redirector. + +2. Caller of VFS Helper for Branches +aufs_unlink() passes the unlink request to the branch filesystem as if +it were called from VFS. So the called unlink operation of the branch +filesystem acts as usual. As a caller of VFS helper, aufs should handle +every necessary pre/post operation for the branch filesystem. +- acquire the lock for the parent dir on a branch +- lookup in a branch +- revalidate dentry on a branch +- mnt_want_write() for a branch +- vfs_unlink() for a branch +- mnt_drop_write() for a branch +- release the lock on a branch + +3. Persistent Inode Number +One of the most important issue for a filesystem is to maintain inode +numbers. This is particularly important to support exporting a +filesystem via NFS. Aufs is a virtual filesystem which doesn't have a +backend block device for its own. But some storage is necessary to +keep and maintain the inode numbers. It may be a large space and may not +suit to keep in memory. Aufs rents some space from its first writable +branch filesystem (by default) and creates file(s) on it. These files +are created by aufs internally and removed soon (currently) keeping +opened. +Note: Because these files are removed, they are totally gone after + unmounting aufs. It means the inode numbers are not persistent + across unmount or reboot. I have a plan to make them really + persistent which will be important for aufs on NFS server. + +4. Read/Write Files Internally (copy-on-write) +Because a branch can be readonly, when you write a file on it, aufs will +"copy-up" it to the upper writable branch internally. And then write the +originally requested thing to the file. Generally kernel doesn't +open/read/write file actively. In aufs, even a single write may cause a +internal "file copy". This behaviour is very similar to cp(1) command. + +Some people may think it is better to pass such work to user space +helper, instead of doing in kernel space. Actually I am still thinking +about it. But currently I have implemented it in kernel space. diff --git a/include/Documentation/filesystems/aufs/design/02struct.txt b/include/Documentation/filesystems/aufs/design/02struct.txt new file mode 100644 index 00000000000..f5fb6a8add2 --- /dev/null +++ b/include/Documentation/filesystems/aufs/design/02struct.txt @@ -0,0 +1,258 @@ + +# Copyright (C) 2005-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +Basic Aufs Internal Structure + +Superblock/Inode/Dentry/File Objects +---------------------------------------------------------------------- +As like an ordinary filesystem, aufs has its own +superblock/inode/dentry/file objects. All these objects have a +dynamically allocated array and store the same kind of pointers to the +lower filesystem, branch. +For example, when you build a union with one readwrite branch and one +readonly, mounted /au, /rw and /ro respectively. +- /au = /rw + /ro +- /ro/fileA exists but /rw/fileA + +Aufs lookup operation finds /ro/fileA and gets dentry for that. These +pointers are stored in a aufs dentry. The array in aufs dentry will be, +- [0] = NULL (because /rw/fileA doesn't exist) +- [1] = /ro/fileA + +This style of an array is essentially same to the aufs +superblock/inode/dentry/file objects. + +Because aufs supports manipulating branches, ie. add/delete/change +branches dynamically, these objects has its own generation. When +branches are changed, the generation in aufs superblock is +incremented. And a generation in other object are compared when it is +accessed. When a generation in other objects are obsoleted, aufs +refreshes the internal array. + + +Superblock +---------------------------------------------------------------------- +Additionally aufs superblock has some data for policies to select one +among multiple writable branches, XIB files, pseudo-links and kobject. +See below in detail. +About the policies which supports copy-down a directory, see +wbr_policy.txt too. + + +Branch and XINO(External Inode Number Translation Table) +---------------------------------------------------------------------- +Every branch has its own xino (external inode number translation table) +file. The xino file is created and unlinked by aufs internally. When two +members of a union exist on the same filesystem, they share the single +xino file. +The struct of a xino file is simple, just a sequence of aufs inode +numbers which is indexed by the lower inode number. +In the above sample, assume the inode number of /ro/fileA is i111 and +aufs assigns the inode number i999 for fileA. Then aufs writes 999 as +4(8) bytes at 111 * 4(8) bytes offset in the xino file. + +When the inode numbers are not contiguous, the xino file will be sparse +which has a hole in it and doesn't consume as much disk space as it +might appear. If your branch filesystem consumes disk space for such +holes, then you should specify 'xino=' option at mounting aufs. + +Aufs has a mount option to free the disk blocks for such holes in XINO +files on tmpfs or ramdisk. But it is not so effective actually. If you +meet a problem of disk shortage due to XINO files, then you should try +"tmpfs-ino.patch" (and "vfs-ino.patch" too) in aufs4-standalone.git. +The patch localizes the assignment inumbers per tmpfs-mount and avoid +the holes in XINO files. + +Also a writable branch has three kinds of "whiteout bases". All these +are existed when the branch is joined to aufs, and their names are +whiteout-ed doubly, so that users will never see their names in aufs +hierarchy. +1. a regular file which will be hardlinked to all whiteouts. +2. a directory to store a pseudo-link. +3. a directory to store an "orphan"-ed file temporary. + +1. Whiteout Base + When you remove a file on a readonly branch, aufs handles it as a + logical deletion and creates a whiteout on the upper writable branch + as a hardlink of this file in order not to consume inode on the + writable branch. +2. Pseudo-link Dir + See below, Pseudo-link. +3. Step-Parent Dir + When "fileC" exists on the lower readonly branch only and it is + opened and removed with its parent dir, and then user writes + something into it, then aufs copies-up fileC to this + directory. Because there is no other dir to store fileC. After + creating a file under this dir, the file is unlinked. + +Because aufs supports manipulating branches, ie. add/delete/change +dynamically, a branch has its own id. When the branch order changes, +aufs finds the new index by searching the branch id. + + +Pseudo-link +---------------------------------------------------------------------- +Assume "fileA" exists on the lower readonly branch only and it is +hardlinked to "fileB" on the branch. When you write something to fileA, +aufs copies-up it to the upper writable branch. Additionally aufs +creates a hardlink under the Pseudo-link Directory of the writable +branch. The inode of a pseudo-link is kept in aufs super_block as a +simple list. If fileB is read after unlinking fileA, aufs returns +filedata from the pseudo-link instead of the lower readonly +branch. Because the pseudo-link is based upon the inode, to keep the +inode number by xino (see above) is essentially necessary. + +All the hardlinks under the Pseudo-link Directory of the writable branch +should be restored in a proper location later. Aufs provides a utility +to do this. The userspace helpers executed at remounting and unmounting +aufs by default. +During this utility is running, it puts aufs into the pseudo-link +maintenance mode. In this mode, only the process which began the +maintenance mode (and its child processes) is allowed to operate in +aufs. Some other processes which are not related to the pseudo-link will +be allowed to run too, but the rest have to return an error or wait +until the maintenance mode ends. If a process already acquires an inode +mutex (in VFS), it has to return an error. + + +XIB(external inode number bitmap) +---------------------------------------------------------------------- +Addition to the xino file per a branch, aufs has an external inode number +bitmap in a superblock object. It is also an internal file such like a +xino file. +It is a simple bitmap to mark whether the aufs inode number is in-use or +not. +To reduce the file I/O, aufs prepares a single memory page to cache xib. + +As well as XINO files, aufs has a feature to truncate/refresh XIB to +reduce the number of consumed disk blocks for these files. + + +Virtual or Vertical Dir, and Readdir in Userspace +---------------------------------------------------------------------- +In order to support multiple layers (branches), aufs readdir operation +constructs a virtual dir block on memory. For readdir, aufs calls +vfs_readdir() internally for each dir on branches, merges their entries +with eliminating the whiteout-ed ones, and sets it to file (dir) +object. So the file object has its entry list until it is closed. The +entry list will be updated when the file position is zero and becomes +obsoleted. This decision is made in aufs automatically. + +The dynamically allocated memory block for the name of entries has a +unit of 512 bytes (by default) and stores the names contiguously (no +padding). Another block for each entry is handled by kmem_cache too. +During building dir blocks, aufs creates hash list and judging whether +the entry is whiteouted by its upper branch or already listed. +The merged result is cached in the corresponding inode object and +maintained by a customizable life-time option. + +Some people may call it can be a security hole or invite DoS attack +since the opened and once readdir-ed dir (file object) holds its entry +list and becomes a pressure for system memory. But I'd say it is similar +to files under /proc or /sys. The virtual files in them also holds a +memory page (generally) while they are opened. When an idea to reduce +memory for them is introduced, it will be applied to aufs too. +For those who really hate this situation, I've developed readdir(3) +library which operates this merging in userspace. You just need to set +LD_PRELOAD environment variable, and aufs will not consume no memory in +kernel space for readdir(3). + + +Workqueue +---------------------------------------------------------------------- +Aufs sometimes requires privilege access to a branch. For instance, +in copy-up/down operation. When a user process is going to make changes +to a file which exists in the lower readonly branch only, and the mode +of one of ancestor directories may not be writable by a user +process. Here aufs copy-up the file with its ancestors and they may +require privilege to set its owner/group/mode/etc. +This is a typical case of a application character of aufs (see +Introduction). + +Aufs uses workqueue synchronously for this case. It creates its own +workqueue. The workqueue is a kernel thread and has privilege. Aufs +passes the request to call mkdir or write (for example), and wait for +its completion. This approach solves a problem of a signal handler +simply. +If aufs didn't adopt the workqueue and changed the privilege of the +process, then the process may receive the unexpected SIGXFSZ or other +signals. + +Also aufs uses the system global workqueue ("events" kernel thread) too +for asynchronous tasks, such like handling inotify/fsnotify, re-creating a +whiteout base and etc. This is unrelated to a privilege. +Most of aufs operation tries acquiring a rw_semaphore for aufs +superblock at the beginning, at the same time waits for the completion +of all queued asynchronous tasks. + + +Whiteout +---------------------------------------------------------------------- +The whiteout in aufs is very similar to Unionfs's. That is represented +by its filename. UnionMount takes an approach of a file mode, but I am +afraid several utilities (find(1) or something) will have to support it. + +Basically the whiteout represents "logical deletion" which stops aufs to +lookup further, but also it represents "dir is opaque" which also stop +further lookup. + +In aufs, rmdir(2) and rename(2) for dir uses whiteout alternatively. +In order to make several functions in a single systemcall to be +revertible, aufs adopts an approach to rename a directory to a temporary +unique whiteouted name. +For example, in rename(2) dir where the target dir already existed, aufs +renames the target dir to a temporary unique whiteouted name before the +actual rename on a branch, and then handles other actions (make it opaque, +update the attributes, etc). If an error happens in these actions, aufs +simply renames the whiteouted name back and returns an error. If all are +succeeded, aufs registers a function to remove the whiteouted unique +temporary name completely and asynchronously to the system global +workqueue. + + +Copy-up +---------------------------------------------------------------------- +It is a well-known feature or concept. +When user modifies a file on a readonly branch, aufs operate "copy-up" +internally and makes change to the new file on the upper writable branch. +When the trigger systemcall does not update the timestamps of the parent +dir, aufs reverts it after copy-up. + + +Move-down (aufs3.9 and later) +---------------------------------------------------------------------- +"Copy-up" is one of the essential feature in aufs. It copies a file from +the lower readonly branch to the upper writable branch when a user +changes something about the file. +"Move-down" is an opposite action of copy-up. Basically this action is +ran manually instead of automatically and internally. +For desgin and implementation, aufs has to consider these issues. +- whiteout for the file may exist on the lower branch. +- ancestor directories may not exist on the lower branch. +- diropq for the ancestor directories may exist on the upper branch. +- free space on the lower branch will reduce. +- another access to the file may happen during moving-down, including + UDBA (see "Revalidate Dentry and UDBA"). +- the file should not be hard-linked nor pseudo-linked. they should be + handled by auplink utility later. + +Sometimes users want to move-down a file from the upper writable branch +to the lower readonly or writable branch. For instance, +- the free space of the upper writable branch is going to run out. +- create a new intermediate branch between the upper and lower branch. +- etc. + +For this purpose, use "aumvdown" command in aufs-util.git. diff --git a/include/Documentation/filesystems/aufs/design/03atomic_open.txt b/include/Documentation/filesystems/aufs/design/03atomic_open.txt new file mode 100644 index 00000000000..1b0699f8bce --- /dev/null +++ b/include/Documentation/filesystems/aufs/design/03atomic_open.txt @@ -0,0 +1,85 @@ + +# Copyright (C) 2015-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +Support for a branch who has its ->atomic_open() +---------------------------------------------------------------------- +The filesystems who implement its ->atomic_open() are not majority. For +example NFSv4 does, and aufs should call NFSv4 ->atomic_open, +particularly for open(O_CREAT|O_EXCL, 0400) case. Other than +->atomic_open(), NFSv4 returns an error for this open(2). While I am not +sure whether all filesystems who have ->atomic_open() behave like this, +but NFSv4 surely returns the error. + +In order to support ->atomic_open() for aufs, there are a few +approaches. + +A. Introduce aufs_atomic_open() + - calls one of VFS:do_last(), lookup_open() or atomic_open() for + branch fs. +B. Introduce aufs_atomic_open() calling create, open and chmod. this is + an aufs user Pip Cet's approach + - calls aufs_create(), VFS finish_open() and notify_change(). + - pass fake-mode to finish_open(), and then correct the mode by + notify_change(). +C. Extend aufs_open() to call branch fs's ->atomic_open() + - no aufs_atomic_open(). + - aufs_lookup() registers the TID to an aufs internal object. + - aufs_create() does nothing when the matching TID is registered, but + registers the mode. + - aufs_open() calls branch fs's ->atomic_open() when the matching + TID is registered. +D. Extend aufs_open() to re-try branch fs's ->open() with superuser's + credential + - no aufs_atomic_open(). + - aufs_create() registers the TID to an internal object. this info + represents "this process created this file just now." + - when aufs gets EACCES from branch fs's ->open(), then confirm the + registered TID and re-try open() with superuser's credential. + +Pros and cons for each approach. + +A. + - straightforward but highly depends upon VFS internal. + - the atomic behavaiour is kept. + - some of parameters such as nameidata are hard to reproduce for + branch fs. + - large overhead. +B. + - easy to implement. + - the atomic behavaiour is lost. +C. + - the atomic behavaiour is kept. + - dirty and tricky. + - VFS checks whether the file is created correctly after calling + ->create(), which means this approach doesn't work. +D. + - easy to implement. + - the atomic behavaiour is lost. + - to open a file with superuser's credential and give it to a user + process is a bad idea, since the file object keeps the credential + in it. It may affect LSM or something. This approach doesn't work + either. + +The approach A is ideal, but it hard to implement. So here is a +variation of A, which is to be implemented. + +A-1. Introduce aufs_atomic_open() + - calls branch fs ->atomic_open() if exists. otherwise calls + vfs_create() and finish_open(). + - the demerit is that the several checks after branch fs + ->atomic_open() are lost. in the ordinary case, the checks are + done by VFS:do_last(), lookup_open() and atomic_open(). some can + be implemented in aufs, but not all I am afraid. diff --git a/include/Documentation/filesystems/aufs/design/03lookup.txt b/include/Documentation/filesystems/aufs/design/03lookup.txt new file mode 100644 index 00000000000..80ae63bcec5 --- /dev/null +++ b/include/Documentation/filesystems/aufs/design/03lookup.txt @@ -0,0 +1,113 @@ + +# Copyright (C) 2005-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +Lookup in a Branch +---------------------------------------------------------------------- +Since aufs has a character of sub-VFS (see Introduction), it operates +lookup for branches as VFS does. It may be a heavy work. But almost all +lookup operation in aufs is the simplest case, ie. lookup only an entry +directly connected to its parent. Digging down the directory hierarchy +is unnecessary. VFS has a function lookup_one_len() for that use, and +aufs calls it. + +When a branch is a remote filesystem, aufs basically relies upon its +->d_revalidate(), also aufs forces the hardest revalidate tests for +them. +For d_revalidate, aufs implements three levels of revalidate tests. See +"Revalidate Dentry and UDBA" in detail. + + +Test Only the Highest One for the Directory Permission (dirperm1 option) +---------------------------------------------------------------------- +Let's try case study. +- aufs has two branches, upper readwrite and lower readonly. + /au = /rw + /ro +- "dirA" exists under /ro, but /rw. and its mode is 0700. +- user invoked "chmod a+rx /au/dirA" +- the internal copy-up is activated and "/rw/dirA" is created and its + permission bits are set to world readable. +- then "/au/dirA" becomes world readable? + +In this case, /ro/dirA is still 0700 since it exists in readonly branch, +or it may be a natively readonly filesystem. If aufs respects the lower +branch, it should not respond readdir request from other users. But user +allowed it by chmod. Should really aufs rejects showing the entries +under /ro/dirA? + +To be honest, I don't have a good solution for this case. So aufs +implements 'dirperm1' and 'nodirperm1' mount options, and leave it to +users. +When dirperm1 is specified, aufs checks only the highest one for the +directory permission, and shows the entries. Otherwise, as usual, checks +every dir existing on all branches and rejects the request. + +As a side effect, dirperm1 option improves the performance of aufs +because the number of permission check is reduced when the number of +branch is many. + + +Revalidate Dentry and UDBA (User's Direct Branch Access) +---------------------------------------------------------------------- +Generally VFS helpers re-validate a dentry as a part of lookup. +0. digging down the directory hierarchy. +1. lock the parent dir by its i_mutex. +2. lookup the final (child) entry. +3. revalidate it. +4. call the actual operation (create, unlink, etc.) +5. unlock the parent dir + +If the filesystem implements its ->d_revalidate() (step 3), then it is +called. Actually aufs implements it and checks the dentry on a branch is +still valid. +But it is not enough. Because aufs has to release the lock for the +parent dir on a branch at the end of ->lookup() (step 2) and +->d_revalidate() (step 3) while the i_mutex of the aufs dir is still +held by VFS. +If the file on a branch is changed directly, eg. bypassing aufs, after +aufs released the lock, then the subsequent operation may cause +something unpleasant result. + +This situation is a result of VFS architecture, ->lookup() and +->d_revalidate() is separated. But I never say it is wrong. It is a good +design from VFS's point of view. It is just not suitable for sub-VFS +character in aufs. + +Aufs supports such case by three level of revalidation which is +selectable by user. +1. Simple Revalidate + Addition to the native flow in VFS's, confirm the child-parent + relationship on the branch just after locking the parent dir on the + branch in the "actual operation" (step 4). When this validation + fails, aufs returns EBUSY. ->d_revalidate() (step 3) in aufs still + checks the validation of the dentry on branches. +2. Monitor Changes Internally by Inotify/Fsnotify + Addition to above, in the "actual operation" (step 4) aufs re-lookup + the dentry on the branch, and returns EBUSY if it finds different + dentry. + Additionally, aufs sets the inotify/fsnotify watch for every dir on branches + during it is in cache. When the event is notified, aufs registers a + function to kernel 'events' thread by schedule_work(). And the + function sets some special status to the cached aufs dentry and inode + private data. If they are not cached, then aufs has nothing to + do. When the same file is accessed through aufs (step 0-3) later, + aufs will detect the status and refresh all necessary data. + In this mode, aufs has to ignore the event which is fired by aufs + itself. +3. No Extra Validation + This is the simplest test and doesn't add any additional revalidation + test, and skip the revalidation in step 4. It is useful and improves + aufs performance when system surely hide the aufs branches from user, + by over-mounting something (or another method). diff --git a/include/Documentation/filesystems/aufs/design/04branch.txt b/include/Documentation/filesystems/aufs/design/04branch.txt new file mode 100644 index 00000000000..0c128973731 --- /dev/null +++ b/include/Documentation/filesystems/aufs/design/04branch.txt @@ -0,0 +1,74 @@ + +# Copyright (C) 2005-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +Branch Manipulation + +Since aufs supports dynamic branch manipulation, ie. add/remove a branch +and changing its permission/attribute, there are a lot of works to do. + + +Add a Branch +---------------------------------------------------------------------- +o Confirm the adding dir exists outside of aufs, including loopback + mount, and its various attributes. +o Initialize the xino file and whiteout bases if necessary. + See struct.txt. + +o Check the owner/group/mode of the directory + When the owner/group/mode of the adding directory differs from the + existing branch, aufs issues a warning because it may impose a + security risk. + For example, when a upper writable branch has a world writable empty + top directory, a malicious user can create any files on the writable + branch directly, like copy-up and modify manually. If something like + /etc/{passwd,shadow} exists on the lower readonly branch but the upper + writable branch, and the writable branch is world-writable, then a + malicious guy may create /etc/passwd on the writable branch directly + and the infected file will be valid in aufs. + I am afraid it can be a security issue, but aufs can do nothing except + producing a warning. + + +Delete a Branch +---------------------------------------------------------------------- +o Confirm the deleting branch is not busy + To be general, there is one merit to adopt "remount" interface to + manipulate branches. It is to discard caches. At deleting a branch, + aufs checks the still cached (and connected) dentries and inodes. If + there are any, then they are all in-use. An inode without its + corresponding dentry can be alive alone (for example, inotify/fsnotify case). + + For the cached one, aufs checks whether the same named entry exists on + other branches. + If the cached one is a directory, because aufs provides a merged view + to users, as long as one dir is left on any branch aufs can show the + dir to users. In this case, the branch can be removed from aufs. + Otherwise aufs rejects deleting the branch. + + If any file on the deleting branch is opened by aufs, then aufs + rejects deleting. + + +Modify the Permission of a Branch +---------------------------------------------------------------------- +o Re-initialize or remove the xino file and whiteout bases if necessary. + See struct.txt. + +o rw --> ro: Confirm the modifying branch is not busy + Aufs rejects the request if any of these conditions are true. + - a file on the branch is mmap-ed. + - a regular file on the branch is opened for write and there is no + same named entry on the upper branch. diff --git a/include/Documentation/filesystems/aufs/design/05wbr_policy.txt b/include/Documentation/filesystems/aufs/design/05wbr_policy.txt new file mode 100644 index 00000000000..cc5b7979c21 --- /dev/null +++ b/include/Documentation/filesystems/aufs/design/05wbr_policy.txt @@ -0,0 +1,64 @@ + +# Copyright (C) 2005-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +Policies to Select One among Multiple Writable Branches +---------------------------------------------------------------------- +When the number of writable branch is more than one, aufs has to decide +the target branch for file creation or copy-up. By default, the highest +writable branch which has the parent (or ancestor) dir of the target +file is chosen (top-down-parent policy). +By user's request, aufs implements some other policies to select the +writable branch, for file creation several policies, round-robin, +most-free-space, and other policies. For copy-up, top-down-parent, +bottom-up-parent, bottom-up and others. + +As expected, the round-robin policy selects the branch in circular. When +you have two writable branches and creates 10 new files, 5 files will be +created for each branch. mkdir(2) systemcall is an exception. When you +create 10 new directories, all will be created on the same branch. +And the most-free-space policy selects the one which has most free +space among the writable branches. The amount of free space will be +checked by aufs internally, and users can specify its time interval. + +The policies for copy-up is more simple, +top-down-parent is equivalent to the same named on in create policy, +bottom-up-parent selects the writable branch where the parent dir +exists and the nearest upper one from the copyup-source, +bottom-up selects the nearest upper writable branch from the +copyup-source, regardless the existence of the parent dir. + +There are some rules or exceptions to apply these policies. +- If there is a readonly branch above the policy-selected branch and + the parent dir is marked as opaque (a variation of whiteout), or the + target (creating) file is whiteout-ed on the upper readonly branch, + then the result of the policy is ignored and the target file will be + created on the nearest upper writable branch than the readonly branch. +- If there is a writable branch above the policy-selected branch and + the parent dir is marked as opaque or the target file is whiteouted + on the branch, then the result of the policy is ignored and the target + file will be created on the highest one among the upper writable + branches who has diropq or whiteout. In case of whiteout, aufs removes + it as usual. +- link(2) and rename(2) systemcalls are exceptions in every policy. + They try selecting the branch where the source exists as possible + since copyup a large file will take long time. If it can't be, + ie. the branch where the source exists is readonly, then they will + follow the copyup policy. +- There is an exception for rename(2) when the target exists. + If the rename target exists, aufs compares the index of the branches + where the source and the target exists and selects the higher + one. If the selected branch is readonly, then aufs follows the + copyup policy. diff --git a/include/Documentation/filesystems/aufs/design/06dirren.dot b/include/Documentation/filesystems/aufs/design/06dirren.dot new file mode 100644 index 00000000000..2d62bb6dd55 --- /dev/null +++ b/include/Documentation/filesystems/aufs/design/06dirren.dot @@ -0,0 +1,31 @@ + +// to view this graph, run dot(1) command in GRAPHVIZ. + +digraph G { +node [shape=box]; +whinfo [label="detailed info file\n(lower_brid_root-hinum, h_inum, namelen, old name)"]; + +node [shape=oval]; + +aufs_rename -> whinfo [label="store/remove"]; + +node [shape=oval]; +inode_list [label="h_inum list in branch\ncache"]; + +node [shape=box]; +whinode [label="h_inum list file"]; + +node [shape=oval]; +brmgmt [label="br_add/del/mod/umount"]; + +brmgmt -> inode_list [label="create/remove"]; +brmgmt -> whinode [label="load/store"]; + +inode_list -> whinode [style=dashed,dir=both]; + +aufs_rename -> inode_list [label="add/del"]; + +aufs_lookup -> inode_list [label="search"]; + +aufs_lookup -> whinfo [label="load/remove"]; +} diff --git a/include/Documentation/filesystems/aufs/design/06dirren.txt b/include/Documentation/filesystems/aufs/design/06dirren.txt new file mode 100644 index 00000000000..1f3cb86d94f --- /dev/null +++ b/include/Documentation/filesystems/aufs/design/06dirren.txt @@ -0,0 +1,102 @@ + +# Copyright (C) 2017-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +Special handling for renaming a directory (DIRREN) +---------------------------------------------------------------------- +First, let's assume we have a simple usecase. + +- /u = /rw + /ro +- /rw/dirA exists +- /ro/dirA and /ro/dirA/file exist too +- there is no dirB on both branches +- a user issues rename("dirA", "dirB") + +Now, what should aufs behave against this rename(2)? +There are a few possible cases. + +A. returns EROFS. + since dirA exists on a readonly branch which cannot be renamed. +B. returns EXDEV. + it is possible to copy-up dirA (only the dir itself), but the child + entries ("file" in this case) should not be. it must be a bad + approach to copy-up recursively. +C. returns a success. + even the branch /ro is readonly, aufs tries renaming it. Obviously it + is a violation of aufs' policy. +D. construct an extra information which indicates that /ro/dirA should + be handled as the name of dirB. + overlayfs has a similar feature called REDIRECT. + +Until now, aufs implements the case B only which returns EXDEV, and +expects the userspace application behaves like mv(1) which tries +issueing rename(2) recursively. + +A new aufs feature called DIRREN is introduced which implements the case +D. There are several "extra information" added. + +1. detailed info per renamed directory + path: /rw/dirB/$AUFS_WH_DR_INFO_PFX. +2. the inode-number list of directories on a branch + path: /rw/dirB/$AUFS_WH_DR_BRHINO + +The filename of "detailed info per directory" represents the lower +branch, and its format is +- a type of the branch id + one of these. + + uuid (not implemented yet) + + fsid + + dev +- the inode-number of the branch root dir + +And it contains these info in a single regular file. +- magic number +- branch's inode-number of the logically renamed dir +- the name of the before-renamed dir + +The "detailed info per directory" file is created in aufs rename(2), and +loaded in any lookup. +The info is considered in lookup for the matching case only. Here +"matching" means that the root of branch (in the info filename) is same +to the current looking-up branch. After looking-up the before-renamed +name, the inode-number is compared. And the matched dentry is used. + +The "inode-number list of directories" is a regular file which contains +simply the inode-numbers on the branch. The file is created or updated +in removing the branch, and loaded in adding the branch. Its lifetime is +equal to the branch. +The list is refered in lookup, and when the current target inode is +found in the list, the aufs tries loading the "detailed info per +directory" and get the changed and valid name of the dir. + +Theoretically these "extra informaiton" may be able to be put into XATTR +in the dir inode. But aufs doesn't choose this way because +1. XATTR may not be supported by the branch (or its configuration) +2. XATTR may have its size limit. +3. XATTR may be less easy to convert than a regular file, when the + format of the info is changed in the future. +At the same time, I agree that the regular file approach is much slower +than XATTR approach. So, in the future, aufs may take the XATTR or other +better approach. + +This DIRREN feature is enabled by aufs configuration, and is activated +by a new mount option. + +For the more complicated case, there is a work with UDBA option, which +is to dected the direct access to the branches (by-passing aufs) and to +maintain the cashes in aufs. Since a single cached aufs dentry may +contains two names, before- and after-rename, the name comparision in +UDBA handler may not work correctly. In this case, the behaviour will be +equivalen to udba=reval case. diff --git a/include/Documentation/filesystems/aufs/design/06fhsm.txt b/include/Documentation/filesystems/aufs/design/06fhsm.txt new file mode 100644 index 00000000000..ddfebecdf1f --- /dev/null +++ b/include/Documentation/filesystems/aufs/design/06fhsm.txt @@ -0,0 +1,120 @@ + +# Copyright (C) 2011-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + +File-based Hierarchical Storage Management (FHSM) +---------------------------------------------------------------------- +Hierarchical Storage Management (or HSM) is a well-known feature in the +storage world. Aufs provides this feature as file-based with multiple +writable branches, based upon the principle of "Colder, the Lower". +Here the word "colder" means that the less used files, and "lower" means +that the position in the order of the stacked branches vertically. +These multiple writable branches are prioritized, ie. the topmost one +should be the fastest drive and be used heavily. + +o Characters in aufs FHSM story +- aufs itself and a new branch attribute. +- a new ioctl interface to move-down and to establish a connection with + the daemon ("move-down" is a converse of "copy-up"). +- userspace tool and daemon. + +The userspace daemon establishes a connection with aufs and waits for +the notification. The notified information is very similar to struct +statfs containing the number of consumed blocks and inodes. +When the consumed blocks/inodes of a branch exceeds the user-specified +upper watermark, the daemon activates its move-down process until the +consumed blocks/inodes reaches the user-specified lower watermark. + +The actual move-down is done by aufs based upon the request from +user-space since we need to maintain the inode number and the internal +pointer arrays in aufs. + +Currently aufs FHSM handles the regular files only. Additionally they +must not be hard-linked nor pseudo-linked. + + +o Cowork of aufs and the user-space daemon + During the userspace daemon established the connection, aufs sends a + small notification to it whenever aufs writes something into the + writable branch. But it may cost high since aufs issues statfs(2) + internally. So user can specify a new option to cache the + info. Actually the notification is controlled by these factors. + + the specified cache time. + + classified as "force" by aufs internally. + Until the specified time expires, aufs doesn't send the info + except the forced cases. When aufs decide forcing, the info is always + notified to userspace. + For example, the number of free inodes is generally large enough and + the shortage of it happens rarely. So aufs doesn't force the + notification when creating a new file, directory and others. This is + the typical case which aufs doesn't force. + When aufs writes the actual filedata and the files consumes any of new + blocks, the aufs forces notifying. + + +o Interfaces in aufs +- New branch attribute. + + fhsm + Specifies that the branch is managed by FHSM feature. In other word, + participant in the FHSM. + When nofhsm is set to the branch, it will not be the source/target + branch of the move-down operation. This attribute is set + independently from coo and moo attributes, and if you want full + FHSM, you should specify them as well. +- New mount option. + + fhsm_sec + Specifies a second to suppress many less important info to be + notified. +- New ioctl. + + AUFS_CTL_FHSM_FD + create a new file descriptor which userspace can read the notification + (a subset of struct statfs) from aufs. +- Module parameter 'brs' + It has to be set to 1. Otherwise the new mount option 'fhsm' will not + be set. +- mount helpers /sbin/mount.aufs and /sbin/umount.aufs + When there are two or more branches with fhsm attributes, + /sbin/mount.aufs invokes the user-space daemon and /sbin/umount.aufs + terminates it. As a result of remounting and branch-manipulation, the + number of branches with fhsm attribute can be one. In this case, + /sbin/mount.aufs will terminate the user-space daemon. + + +Finally the operation is done as these steps in kernel-space. +- make sure that, + + no one else is using the file. + + the file is not hard-linked. + + the file is not pseudo-linked. + + the file is a regular file. + + the parent dir is not opaqued. +- find the target writable branch. +- make sure the file is not whiteout-ed by the upper (than the target) + branch. +- make the parent dir on the target branch. +- mutex lock the inode on the branch. +- unlink the whiteout on the target branch (if exists). +- lookup and create the whiteout-ed temporary name on the target branch. +- copy the file as the whiteout-ed temporary name on the target branch. +- rename the whiteout-ed temporary name to the original name. +- unlink the file on the source branch. +- maintain the internal pointer array and the external inode number + table (XINO). +- maintain the timestamps and other attributes of the parent dir and the + file. + +And of course, in every step, an error may happen. So the operation +should restore the original file state after an error happens. diff --git a/include/Documentation/filesystems/aufs/design/06mmap.txt b/include/Documentation/filesystems/aufs/design/06mmap.txt new file mode 100644 index 00000000000..9a0a096b140 --- /dev/null +++ b/include/Documentation/filesystems/aufs/design/06mmap.txt @@ -0,0 +1,72 @@ + +# Copyright (C) 2005-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +mmap(2) -- File Memory Mapping +---------------------------------------------------------------------- +In aufs, the file-mapped pages are handled by a branch fs directly, no +interaction with aufs. It means aufs_mmap() calls the branch fs's +->mmap(). +This approach is simple and good, but there is one problem. +Under /proc, several entries show the mmapped files by its path (with +device and inode number), and the printed path will be the path on the +branch fs's instead of virtual aufs's. +This is not a problem in most cases, but some utilities lsof(1) (and its +user) may expect the path on aufs. + +To address this issue, aufs adds a new member called vm_prfile in struct +vm_area_struct (and struct vm_region). The original vm_file points to +the file on the branch fs in order to handle everything correctly as +usual. The new vm_prfile points to a virtual file in aufs, and the +show-functions in procfs refers to vm_prfile if it is set. +Also we need to maintain several other places where touching vm_file +such like +- fork()/clone() copies vma and the reference count of vm_file is + incremented. +- merging vma maintains the ref count too. + +This is not a good approach. It just fakes the printed path. But it +leaves all behaviour around f_mapping unchanged. This is surely an +advantage. +Actually aufs had adopted another complicated approach which calls +generic_file_mmap() and handles struct vm_operations_struct. In this +approach, aufs met a hard problem and I could not solve it without +switching the approach. + +There may be one more another approach which is +- bind-mount the branch-root onto the aufs-root internally +- grab the new vfsmount (ie. struct mount) +- lazy-umount the branch-root internally +- in open(2) the aufs-file, open the branch-file with the hidden + vfsmount (instead of the original branch's vfsmount) +- ideally this "bind-mount and lazy-umount" should be done atomically, + but it may be possible from userspace by the mount helper. + +Adding the internal hidden vfsmount and using it in opening a file, the +file path under /proc will be printed correctly. This approach looks +smarter, but is not possible I am afraid. +- aufs-root may be bind-mount later. when it happens, another hidden + vfsmount will be required. +- it is hard to get the chance to bind-mount and lazy-umount + + in kernel-space, FS can have vfsmount in open(2) via + file->f_path, and aufs can know its vfsmount. But several locks are + already acquired, and if aufs tries to bind-mount and lazy-umount + here, then it may cause a deadlock. + + in user-space, bind-mount doesn't invoke the mount helper. +- since /proc shows dev and ino, aufs has to give vma these info. it + means a new member vm_prinode will be necessary. this is essentially + equivalent to vm_prfile described above. + +I have to give up this "looks-smater" approach. diff --git a/include/Documentation/filesystems/aufs/design/06xattr.txt b/include/Documentation/filesystems/aufs/design/06xattr.txt new file mode 100644 index 00000000000..be441e8d35b --- /dev/null +++ b/include/Documentation/filesystems/aufs/design/06xattr.txt @@ -0,0 +1,96 @@ + +# Copyright (C) 2014-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + +Listing XATTR/EA and getting the value +---------------------------------------------------------------------- +For the inode standard attributes (owner, group, timestamps, etc.), aufs +shows the values from the topmost existing file. This behaviour is good +for the non-dir entries since the bahaviour exactly matches the shown +information. But for the directories, aufs considers all the same named +entries on the lower branches. Which means, if one of the lower entry +rejects readdir call, then aufs returns an error even if the topmost +entry allows it. This behaviour is necessary to respect the branch fs's +security, but can make users confused since the user-visible standard +attributes don't match the behaviour. +To address this issue, aufs has a mount option called dirperm1 which +checks the permission for the topmost entry only, and ignores the lower +entry's permission. + +A similar issue can happen around XATTR. +getxattr(2) and listxattr(2) families behave as if dirperm1 option is +always set. Otherwise these very unpleasant situation would happen. +- listxattr(2) may return the duplicated entries. +- users may not be able to remove or reset the XATTR forever, + + +XATTR/EA support in the internal (copy,move)-(up,down) +---------------------------------------------------------------------- +Generally the extended attributes of inode are categorized as these. +- "security" for LSM and capability. +- "system" for posix ACL, 'acl' mount option is required for the branch + fs generally. +- "trusted" for userspace, CAP_SYS_ADMIN is required. +- "user" for userspace, 'user_xattr' mount option is required for the + branch fs generally. + +Moreover there are some other categories. Aufs handles these rather +unpopular categories as the ordinary ones, ie. there is no special +condition nor exception. + +In copy-up, the support for XATTR on the dst branch may differ from the +src branch. In this case, the copy-up operation will get an error and +the original user operation which triggered the copy-up will fail. It +can happen that even all copy-up will fail. +When both of src and dst branches support XATTR and if an error occurs +during copying XATTR, then the copy-up should fail obviously. That is a +good reason and aufs should return an error to userspace. But when only +the src branch support that XATTR, aufs should not return an error. +For example, the src branch supports ACL but the dst branch doesn't +because the dst branch may natively un-support it or temporary +un-support it due to "noacl" mount option. Of course, the dst branch fs +may NOT return an error even if the XATTR is not supported. It is +totally up to the branch fs. + +Anyway when the aufs internal copy-up gets an error from the dst branch +fs, then aufs tries removing the just copied entry and returns the error +to the userspace. The worst case of this situation will be all copy-up +will fail. + +For the copy-up operation, there two basic approaches. +- copy the specified XATTR only (by category above), and return the + error unconditionally if it happens. +- copy all XATTR, and ignore the error on the specified category only. + +In order to support XATTR and to implement the correct behaviour, aufs +chooses the latter approach and introduces some new branch attributes, +"icexsec", "icexsys", "icextr", "icexusr", and "icexoth". +They correspond to the XATTR namespaces (see above). Additionally, to be +convenient, "icex" is also provided which means all "icex*" attributes +are set (here the word "icex" stands for "ignore copy-error on XATTR"). + +The meaning of these attributes is to ignore the error from setting +XATTR on that branch. +Note that aufs tries copying all XATTR unconditionally, and ignores the +error from the dst branch according to the specified attributes. + +Some XATTR may have its default value. The default value may come from +the parent dir or the environment. If the default value is set at the +file creating-time, it will be overwritten by copy-up. +Some contradiction may happen I am afraid. +Do we need another attribute to stop copying XATTR? I am unsure. For +now, aufs implements the branch attributes to ignore the error. diff --git a/include/Documentation/filesystems/aufs/design/07export.txt b/include/Documentation/filesystems/aufs/design/07export.txt new file mode 100644 index 00000000000..bb700cb18af --- /dev/null +++ b/include/Documentation/filesystems/aufs/design/07export.txt @@ -0,0 +1,58 @@ + +# Copyright (C) 2005-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +Export Aufs via NFS +---------------------------------------------------------------------- +Here is an approach. +- like xino/xib, add a new file 'xigen' which stores aufs inode + generation. +- iget_locked(): initialize aufs inode generation for a new inode, and + store it in xigen file. +- destroy_inode(): increment aufs inode generation and store it in xigen + file. it is necessary even if it is not unlinked, because any data of + inode may be changed by UDBA. +- encode_fh(): for a root dir, simply return FILEID_ROOT. otherwise + build file handle by + + branch id (4 bytes) + + superblock generation (4 bytes) + + inode number (4 or 8 bytes) + + parent dir inode number (4 or 8 bytes) + + inode generation (4 bytes)) + + return value of exportfs_encode_fh() for the parent on a branch (4 + bytes) + + file handle for a branch (by exportfs_encode_fh()) +- fh_to_dentry(): + + find the index of a branch from its id in handle, and check it is + still exist in aufs. + + 1st level: get the inode number from handle and search it in cache. + + 2nd level: if not found in cache, get the parent inode number from + the handle and search it in cache. and then open the found parent + dir, find the matching inode number by vfs_readdir() and get its + name, and call lookup_one_len() for the target dentry. + + 3rd level: if the parent dir is not cached, call + exportfs_decode_fh() for a branch and get the parent on a branch, + build a pathname of it, convert it a pathname in aufs, call + path_lookup(). now aufs gets a parent dir dentry, then handle it as + the 2nd level. + + to open the dir, aufs needs struct vfsmount. aufs keeps vfsmount + for every branch, but not itself. to get this, (currently) aufs + searches in current->nsproxy->mnt_ns list. it may not be a good + idea, but I didn't get other approach. + + test the generation of the gotten inode. +- every inode operation: they may get EBUSY due to UDBA. in this case, + convert it into ESTALE for NFSD. +- readdir(): call lockdep_on/off() because filldir in NFSD calls + lookup_one_len(), vfs_getattr(), encode_fh() and others. diff --git a/include/Documentation/filesystems/aufs/design/08shwh.txt b/include/Documentation/filesystems/aufs/design/08shwh.txt new file mode 100644 index 00000000000..1dad573f619 --- /dev/null +++ b/include/Documentation/filesystems/aufs/design/08shwh.txt @@ -0,0 +1,52 @@ + +# Copyright (C) 2005-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +Show Whiteout Mode (shwh) +---------------------------------------------------------------------- +Generally aufs hides the name of whiteouts. But in some cases, to show +them is very useful for users. For instance, creating a new middle layer +(branch) by merging existing layers. + +(borrowing aufs1 HOW-TO from a user, Michael Towers) +When you have three branches, +- Bottom: 'system', squashfs (underlying base system), read-only +- Middle: 'mods', squashfs, read-only +- Top: 'overlay', ram (tmpfs), read-write + +The top layer is loaded at boot time and saved at shutdown, to preserve +the changes made to the system during the session. +When larger changes have been made, or smaller changes have accumulated, +the size of the saved top layer data grows. At this point, it would be +nice to be able to merge the two overlay branches ('mods' and 'overlay') +and rewrite the 'mods' squashfs, clearing the top layer and thus +restoring save and load speed. + +This merging is simplified by the use of another aufs mount, of just the +two overlay branches using the 'shwh' option. +# mount -t aufs -o ro,shwh,br:/livesys/overlay=ro+wh:/livesys/mods=rr+wh \ + aufs /livesys/merge_union + +A merged view of these two branches is then available at +/livesys/merge_union, and the new feature is that the whiteouts are +visible! +Note that in 'shwh' mode the aufs mount must be 'ro', which will disable +writing to all branches. Also the default mode for all branches is 'ro'. +It is now possible to save the combined contents of the two overlay +branches to a new squashfs, e.g.: +# mksquashfs /livesys/merge_union /path/to/newmods.squash + +This new squashfs archive can be stored on the boot device and the +initramfs will use it to replace the old one at the next boot. diff --git a/include/Documentation/filesystems/aufs/design/10dynop.txt b/include/Documentation/filesystems/aufs/design/10dynop.txt new file mode 100644 index 00000000000..710313c08f8 --- /dev/null +++ b/include/Documentation/filesystems/aufs/design/10dynop.txt @@ -0,0 +1,47 @@ + +# Copyright (C) 2010-2018 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +Dynamically customizable FS operations +---------------------------------------------------------------------- +Generally FS operations (struct inode_operations, struct +address_space_operations, struct file_operations, etc.) are defined as +"static const", but it never means that FS have only one set of +operation. Some FS have multiple sets of them. For instance, ext2 has +three sets, one for XIP, for NOBH, and for normal. +Since aufs overrides and redirects these operations, sometimes aufs has +to change its behaviour according to the branch FS type. More importantly +VFS acts differently if a function (member in the struct) is set or +not. It means aufs should have several sets of operations and select one +among them according to the branch FS definition. + +In order to solve this problem and not to affect the behaviour of VFS, +aufs defines these operations dynamically. For instance, aufs defines +dummy direct_IO function for struct address_space_operations, but it may +not be set to the address_space_operations actually. When the branch FS +doesn't have it, aufs doesn't set it to its address_space_operations +while the function definition itself is still alive. So the behaviour +itself will not change, and it will return an error when direct_IO is +not set. + +The lifetime of these dynamically generated operation object is +maintained by aufs branch object. When the branch is removed from aufs, +the reference counter of the object is decremented. When it reaches +zero, the dynamically generated operation object will be freed. + +This approach is designed to support AIO (io_submit), Direct I/O and +XIP (DAX) mainly. +Currently this approach is applied to address_space_operations for +regular files only. diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h index a75cb371cd1..8177fc192d6 100644 --- a/include/asm-generic/pgtable.h +++ b/include/asm-generic/pgtable.h @@ -817,12 +817,25 @@ extern void untrack_pfn(struct vm_area_struct *vma, unsigned long pfn, extern void untrack_pfn_moved(struct vm_area_struct *vma); #endif +#ifdef CONFIG_UKSM +static inline int is_uksm_zero_pfn(unsigned long pfn) +{ + extern unsigned long uksm_zero_pfn; + return pfn == uksm_zero_pfn; +} +#else +static inline int is_uksm_zero_pfn(unsigned long pfn) +{ + return 0; +} +#endif + #ifdef __HAVE_COLOR_ZERO_PAGE static inline int is_zero_pfn(unsigned long pfn) { extern unsigned long zero_pfn; unsigned long offset_from_zero_pfn = pfn - zero_pfn; - return offset_from_zero_pfn <= (zero_page_mask >> PAGE_SHIFT); + return offset_from_zero_pfn <= (zero_page_mask >> PAGE_SHIFT) || is_uksm_zero_pfn(pfn); } #define my_zero_pfn(addr) page_to_pfn(ZERO_PAGE(addr)) @@ -831,7 +844,7 @@ static inline int is_zero_pfn(unsigned long pfn) static inline int is_zero_pfn(unsigned long pfn) { extern unsigned long zero_pfn; - return pfn == zero_pfn; + return (pfn == zero_pfn) || (is_uksm_zero_pfn(pfn)); } static inline unsigned long my_zero_pfn(unsigned long addr) diff --git a/include/fs/aufs/Kconfig b/include/fs/aufs/Kconfig new file mode 100644 index 00000000000..9f436425716 --- /dev/null +++ b/include/fs/aufs/Kconfig @@ -0,0 +1,199 @@ +# SPDX-License-Identifier: GPL-2.0 +config AUFS_FS + tristate "Aufs (Advanced multi layered unification filesystem) support" + help + Aufs is a stackable unification filesystem such as Unionfs, + which unifies several directories and provides a merged single + directory. + In the early days, aufs was entirely re-designed and + re-implemented Unionfs Version 1.x series. Introducing many + original ideas, approaches and improvements, it becomes totally + different from Unionfs while keeping the basic features. + +if AUFS_FS +choice + prompt "Maximum number of branches" + default AUFS_BRANCH_MAX_127 + help + Specifies the maximum number of branches (or member directories) + in a single aufs. The larger value consumes more system + resources and has a minor impact to performance. +config AUFS_BRANCH_MAX_127 + bool "127" + help + Specifies the maximum number of branches (or member directories) + in a single aufs. The larger value consumes more system + resources and has a minor impact to performance. +config AUFS_BRANCH_MAX_511 + bool "511" + help + Specifies the maximum number of branches (or member directories) + in a single aufs. The larger value consumes more system + resources and has a minor impact to performance. +config AUFS_BRANCH_MAX_1023 + bool "1023" + help + Specifies the maximum number of branches (or member directories) + in a single aufs. The larger value consumes more system + resources and has a minor impact to performance. +config AUFS_BRANCH_MAX_32767 + bool "32767" + help + Specifies the maximum number of branches (or member directories) + in a single aufs. The larger value consumes more system + resources and has a minor impact to performance. +endchoice + +config AUFS_SBILIST + bool + depends on AUFS_MAGIC_SYSRQ || PROC_FS + default y + help + Automatic configuration for internal use. + When aufs supports Magic SysRq or /proc, enabled automatically. + +config AUFS_HNOTIFY + bool "Detect direct branch access (bypassing aufs)" + help + If you want to modify files on branches directly, eg. bypassing aufs, + and want aufs to detect the changes of them fully, then enable this + option and use 'udba=notify' mount option. + Currently there is only one available configuration, "fsnotify". + It will have a negative impact to the performance. + See detail in aufs.5. + +choice + prompt "method" if AUFS_HNOTIFY + default AUFS_HFSNOTIFY +config AUFS_HFSNOTIFY + bool "fsnotify" + select FSNOTIFY +endchoice + +config AUFS_EXPORT + bool "NFS-exportable aufs" + depends on EXPORTFS + help + If you want to export your mounted aufs via NFS, then enable this + option. There are several requirements for this configuration. + See detail in aufs.5. + +config AUFS_INO_T_64 + bool + depends on AUFS_EXPORT + depends on 64BIT && !(ALPHA || S390) + default y + help + Automatic configuration for internal use. + /* typedef unsigned long/int __kernel_ino_t */ + /* alpha and s390x are int */ + +config AUFS_XATTR + bool "support for XATTR/EA (including Security Labels)" + help + If your branch fs supports XATTR/EA and you want to make them + available in aufs too, then enable this opsion and specify the + branch attributes for EA. + See detail in aufs.5. + +config AUFS_FHSM + bool "File-based Hierarchical Storage Management" + help + Hierarchical Storage Management (or HSM) is a well-known feature + in the storage world. Aufs provides this feature as file-based. + with multiple branches. + These multiple branches are prioritized, ie. the topmost one + should be the fastest drive and be used heavily. + +config AUFS_RDU + bool "Readdir in userspace" + help + Aufs has two methods to provide a merged view for a directory, + by a user-space library and by kernel-space natively. The latter + is always enabled but sometimes large and slow. + If you enable this option, install the library in aufs2-util + package, and set some environment variables for your readdir(3), + then the work will be handled in user-space which generally + shows better performance in most cases. + See detail in aufs.5. + +config AUFS_DIRREN + bool "Workaround for rename(2)-ing a directory" + help + By default, aufs returns EXDEV error in renameing a dir who has + his child on the lower branch, since it is a bad idea to issue + rename(2) internally for every lower branch. But user may not + accept this behaviour. So here is a workaround to allow such + rename(2) and store some extra infromation on the writable + branch. Obviously this costs high (and I don't like it). + To use this feature, you need to enable this configuration AND + to specify the mount option `dirren.' + See details in aufs.5 and the design documents. + +config AUFS_SHWH + bool "Show whiteouts" + help + If you want to make the whiteouts in aufs visible, then enable + this option and specify 'shwh' mount option. Although it may + sounds like philosophy or something, but in technically it + simply shows the name of whiteout with keeping its behaviour. + +config AUFS_BR_RAMFS + bool "Ramfs (initramfs/rootfs) as an aufs branch" + help + If you want to use ramfs as an aufs branch fs, then enable this + option. Generally tmpfs is recommended. + Aufs prohibited them to be a branch fs by default, because + initramfs becomes unusable after switch_root or something + generally. If you sets initramfs as an aufs branch and boot your + system by switch_root, you will meet a problem easily since the + files in initramfs may be inaccessible. + Unless you are going to use ramfs as an aufs branch fs without + switch_root or something, leave it N. + +config AUFS_BR_FUSE + bool "Fuse fs as an aufs branch" + depends on FUSE_FS + select AUFS_POLL + help + If you want to use fuse-based userspace filesystem as an aufs + branch fs, then enable this option. + It implements the internal poll(2) operation which is + implemented by fuse only (curretnly). + +config AUFS_POLL + bool + help + Automatic configuration for internal use. + +config AUFS_BR_HFSPLUS + bool "Hfsplus as an aufs branch" + depends on HFSPLUS_FS + default y + help + If you want to use hfsplus fs as an aufs branch fs, then enable + this option. This option introduces a small overhead at + copying-up a file on hfsplus. + +config AUFS_BDEV_LOOP + bool + depends on BLK_DEV_LOOP + default y + help + Automatic configuration for internal use. + Convert =[ym] into =y. + +config AUFS_DEBUG + bool "Debug aufs" + help + Enable this to compile aufs internal debug code. + It will have a negative impact to the performance. + +config AUFS_MAGIC_SYSRQ + bool + depends on AUFS_DEBUG && MAGIC_SYSRQ + default y + help + Automatic configuration for internal use. + When aufs supports Magic SysRq, enabled automatically. +endif diff --git a/include/fs/aufs/Makefile b/include/fs/aufs/Makefile new file mode 100644 index 00000000000..2c819a64935 --- /dev/null +++ b/include/fs/aufs/Makefile @@ -0,0 +1,46 @@ +# SPDX-License-Identifier: GPL-2.0 + +include ${src}/magic.mk +ifeq (${CONFIG_AUFS_FS},m) +include ${src}/conf.mk +endif +-include ${src}/priv_def.mk + +# cf. include/linux/kernel.h +# enable pr_debug +ccflags-y += -DDEBUG +# sparse requires the full pathname +ifdef M +ccflags-y += -include ${M}/../../include/uapi/linux/aufs_type.h +else +ccflags-y += -include ${srctree}/include/uapi/linux/aufs_type.h +endif + +obj-$(CONFIG_AUFS_FS) += aufs.o +aufs-y := module.o sbinfo.o super.o branch.o xino.o sysaufs.o opts.o \ + wkq.o vfsub.o dcsub.o \ + cpup.o whout.o wbr_policy.o \ + dinfo.o dentry.o \ + dynop.o \ + finfo.o file.o f_op.o \ + dir.o vdir.o \ + iinfo.o inode.o i_op.o i_op_add.o i_op_del.o i_op_ren.o \ + mvdown.o ioctl.o + +# all are boolean +aufs-$(CONFIG_PROC_FS) += procfs.o plink.o +aufs-$(CONFIG_SYSFS) += sysfs.o +aufs-$(CONFIG_DEBUG_FS) += dbgaufs.o +aufs-$(CONFIG_AUFS_BDEV_LOOP) += loop.o +aufs-$(CONFIG_AUFS_HNOTIFY) += hnotify.o +aufs-$(CONFIG_AUFS_HFSNOTIFY) += hfsnotify.o +aufs-$(CONFIG_AUFS_EXPORT) += export.o +aufs-$(CONFIG_AUFS_XATTR) += xattr.o +aufs-$(CONFIG_FS_POSIX_ACL) += posix_acl.o +aufs-$(CONFIG_AUFS_DIRREN) += dirren.o +aufs-$(CONFIG_AUFS_FHSM) += fhsm.o +aufs-$(CONFIG_AUFS_POLL) += poll.o +aufs-$(CONFIG_AUFS_RDU) += rdu.o +aufs-$(CONFIG_AUFS_BR_HFSPLUS) += hfsplus.o +aufs-$(CONFIG_AUFS_DEBUG) += debug.o +aufs-$(CONFIG_AUFS_MAGIC_SYSRQ) += sysrq.o diff --git a/include/fs/aufs/aufs.h b/include/fs/aufs/aufs.h new file mode 100644 index 00000000000..bcf0a2e405e --- /dev/null +++ b/include/fs/aufs/aufs.h @@ -0,0 +1,60 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * all header files + */ + +#ifndef __AUFS_H__ +#define __AUFS_H__ + +#ifdef __KERNEL__ + +#define AuStub(type, name, body, ...) \ + static inline type name(__VA_ARGS__) { body; } + +#define AuStubVoid(name, ...) \ + AuStub(void, name, , __VA_ARGS__) +#define AuStubInt0(name, ...) \ + AuStub(int, name, return 0, __VA_ARGS__) + +#include "debug.h" + +#include "branch.h" +#include "cpup.h" +#include "dcsub.h" +#include "dbgaufs.h" +#include "dentry.h" +#include "dir.h" +#include "dirren.h" +#include "dynop.h" +#include "file.h" +#include "fstype.h" +#include "hbl.h" +#include "inode.h" +#include "loop.h" +#include "module.h" +#include "opts.h" +#include "rwsem.h" +#include "super.h" +#include "sysaufs.h" +#include "vfsub.h" +#include "whout.h" +#include "wkq.h" + +#endif /* __KERNEL__ */ +#endif /* __AUFS_H__ */ diff --git a/include/fs/aufs/branch.c b/include/fs/aufs/branch.c new file mode 100644 index 00000000000..eeca66c000e --- /dev/null +++ b/include/fs/aufs/branch.c @@ -0,0 +1,1432 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * branch management + */ + +#include +#include +#include "aufs.h" + +/* + * free a single branch + */ +static void au_br_do_free(struct au_branch *br) +{ + int i; + struct au_wbr *wbr; + struct au_dykey **key; + + au_hnotify_fin_br(br); + /* always, regardless the mount option */ + au_dr_hino_free(&br->br_dirren); + + if (br->br_xino.xi_file) + fput(br->br_xino.xi_file); + for (i = br->br_xino.xi_nondir.total - 1; i >= 0; i--) + AuDebugOn(br->br_xino.xi_nondir.array[i]); + kfree(br->br_xino.xi_nondir.array); + + AuDebugOn(au_br_count(br)); + au_br_count_fin(br); + + wbr = br->br_wbr; + if (wbr) { + for (i = 0; i < AuBrWh_Last; i++) + dput(wbr->wbr_wh[i]); + AuDebugOn(atomic_read(&wbr->wbr_wh_running)); + AuRwDestroy(&wbr->wbr_wh_rwsem); + } + + if (br->br_fhsm) { + au_br_fhsm_fin(br->br_fhsm); + kfree(br->br_fhsm); + } + + key = br->br_dykey; + for (i = 0; i < AuBrDynOp; i++, key++) + if (*key) + au_dy_put(*key); + else + break; + + /* recursive lock, s_umount of branch's */ + lockdep_off(); + path_put(&br->br_path); + lockdep_on(); + kfree(wbr); + kfree(br); +} + +/* + * frees all branches + */ +void au_br_free(struct au_sbinfo *sbinfo) +{ + aufs_bindex_t bmax; + struct au_branch **br; + + AuRwMustWriteLock(&sbinfo->si_rwsem); + + bmax = sbinfo->si_bbot + 1; + br = sbinfo->si_branch; + while (bmax--) + au_br_do_free(*br++); +} + +/* + * find the index of a branch which is specified by @br_id. + */ +int au_br_index(struct super_block *sb, aufs_bindex_t br_id) +{ + aufs_bindex_t bindex, bbot; + + bbot = au_sbbot(sb); + for (bindex = 0; bindex <= bbot; bindex++) + if (au_sbr_id(sb, bindex) == br_id) + return bindex; + return -1; +} + +/* ---------------------------------------------------------------------- */ + +/* + * add a branch + */ + +static int test_overlap(struct super_block *sb, struct dentry *h_adding, + struct dentry *h_root) +{ + if (unlikely(h_adding == h_root + || au_test_loopback_overlap(sb, h_adding))) + return 1; + if (h_adding->d_sb != h_root->d_sb) + return 0; + return au_test_subdir(h_adding, h_root) + || au_test_subdir(h_root, h_adding); +} + +/* + * returns a newly allocated branch. @new_nbranch is a number of branches + * after adding a branch. + */ +static struct au_branch *au_br_alloc(struct super_block *sb, int new_nbranch, + int perm) +{ + struct au_branch *add_branch; + struct dentry *root; + struct inode *inode; + int err; + + err = -ENOMEM; + add_branch = kzalloc(sizeof(*add_branch), GFP_NOFS); + if (unlikely(!add_branch)) + goto out; + add_branch->br_xino.xi_nondir.total = 8; /* initial size */ + add_branch->br_xino.xi_nondir.array + = kcalloc(add_branch->br_xino.xi_nondir.total, sizeof(ino_t), + GFP_NOFS); + if (unlikely(!add_branch->br_xino.xi_nondir.array)) + goto out_br; + + err = au_hnotify_init_br(add_branch, perm); + if (unlikely(err)) + goto out_xinondir; + + if (au_br_writable(perm)) { + /* may be freed separately at changing the branch permission */ + add_branch->br_wbr = kzalloc(sizeof(*add_branch->br_wbr), + GFP_NOFS); + if (unlikely(!add_branch->br_wbr)) + goto out_hnotify; + } + + if (au_br_fhsm(perm)) { + err = au_fhsm_br_alloc(add_branch); + if (unlikely(err)) + goto out_wbr; + } + + root = sb->s_root; + err = au_sbr_realloc(au_sbi(sb), new_nbranch, /*may_shrink*/0); + if (!err) + err = au_di_realloc(au_di(root), new_nbranch, /*may_shrink*/0); + if (!err) { + inode = d_inode(root); + err = au_hinode_realloc(au_ii(inode), new_nbranch, + /*may_shrink*/0); + } + if (!err) + return add_branch; /* success */ + +out_wbr: + kfree(add_branch->br_wbr); +out_hnotify: + au_hnotify_fin_br(add_branch); +out_xinondir: + kfree(add_branch->br_xino.xi_nondir.array); +out_br: + kfree(add_branch); +out: + return ERR_PTR(err); +} + +/* + * test if the branch permission is legal or not. + */ +static int test_br(struct inode *inode, int brperm, char *path) +{ + int err; + + err = (au_br_writable(brperm) && IS_RDONLY(inode)); + if (!err) + goto out; + + err = -EINVAL; + pr_err("write permission for readonly mount or inode, %s\n", path); + +out: + return err; +} + +/* + * returns: + * 0: success, the caller will add it + * plus: success, it is already unified, the caller should ignore it + * minus: error + */ +static int test_add(struct super_block *sb, struct au_opt_add *add, int remount) +{ + int err; + aufs_bindex_t bbot, bindex; + struct dentry *root, *h_dentry; + struct inode *inode, *h_inode; + + root = sb->s_root; + bbot = au_sbbot(sb); + if (unlikely(bbot >= 0 + && au_find_dbindex(root, add->path.dentry) >= 0)) { + err = 1; + if (!remount) { + err = -EINVAL; + pr_err("%s duplicated\n", add->pathname); + } + goto out; + } + + err = -ENOSPC; /* -E2BIG; */ + if (unlikely(AUFS_BRANCH_MAX <= add->bindex + || AUFS_BRANCH_MAX - 1 <= bbot)) { + pr_err("number of branches exceeded %s\n", add->pathname); + goto out; + } + + err = -EDOM; + if (unlikely(add->bindex < 0 || bbot + 1 < add->bindex)) { + pr_err("bad index %d\n", add->bindex); + goto out; + } + + inode = d_inode(add->path.dentry); + err = -ENOENT; + if (unlikely(!inode->i_nlink)) { + pr_err("no existence %s\n", add->pathname); + goto out; + } + + err = -EINVAL; + if (unlikely(inode->i_sb == sb)) { + pr_err("%s must be outside\n", add->pathname); + goto out; + } + + if (unlikely(au_test_fs_unsuppoted(inode->i_sb))) { + pr_err("unsupported filesystem, %s (%s)\n", + add->pathname, au_sbtype(inode->i_sb)); + goto out; + } + + if (unlikely(inode->i_sb->s_stack_depth)) { + pr_err("already stacked, %s (%s)\n", + add->pathname, au_sbtype(inode->i_sb)); + goto out; + } + + err = test_br(d_inode(add->path.dentry), add->perm, add->pathname); + if (unlikely(err)) + goto out; + + if (bbot < 0) + return 0; /* success */ + + err = -EINVAL; + for (bindex = 0; bindex <= bbot; bindex++) + if (unlikely(test_overlap(sb, add->path.dentry, + au_h_dptr(root, bindex)))) { + pr_err("%s is overlapped\n", add->pathname); + goto out; + } + + err = 0; + if (au_opt_test(au_mntflags(sb), WARN_PERM)) { + h_dentry = au_h_dptr(root, 0); + h_inode = d_inode(h_dentry); + if ((h_inode->i_mode & S_IALLUGO) != (inode->i_mode & S_IALLUGO) + || !uid_eq(h_inode->i_uid, inode->i_uid) + || !gid_eq(h_inode->i_gid, inode->i_gid)) + pr_warn("uid/gid/perm %s %u/%u/0%o, %u/%u/0%o\n", + add->pathname, + i_uid_read(inode), i_gid_read(inode), + (inode->i_mode & S_IALLUGO), + i_uid_read(h_inode), i_gid_read(h_inode), + (h_inode->i_mode & S_IALLUGO)); + } + +out: + return err; +} + +/* + * initialize or clean the whiteouts for an adding branch + */ +static int au_br_init_wh(struct super_block *sb, struct au_branch *br, + int new_perm) +{ + int err, old_perm; + aufs_bindex_t bindex; + struct inode *h_inode; + struct au_wbr *wbr; + struct au_hinode *hdir; + struct dentry *h_dentry; + + err = vfsub_mnt_want_write(au_br_mnt(br)); + if (unlikely(err)) + goto out; + + wbr = br->br_wbr; + old_perm = br->br_perm; + br->br_perm = new_perm; + hdir = NULL; + h_inode = NULL; + bindex = au_br_index(sb, br->br_id); + if (0 <= bindex) { + hdir = au_hi(d_inode(sb->s_root), bindex); + au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT); + } else { + h_dentry = au_br_dentry(br); + h_inode = d_inode(h_dentry); + inode_lock_nested(h_inode, AuLsc_I_PARENT); + } + if (!wbr) + err = au_wh_init(br, sb); + else { + wbr_wh_write_lock(wbr); + err = au_wh_init(br, sb); + wbr_wh_write_unlock(wbr); + } + if (hdir) + au_hn_inode_unlock(hdir); + else + inode_unlock(h_inode); + vfsub_mnt_drop_write(au_br_mnt(br)); + br->br_perm = old_perm; + + if (!err && wbr && !au_br_writable(new_perm)) { + kfree(wbr); + br->br_wbr = NULL; + } + +out: + return err; +} + +static int au_wbr_init(struct au_branch *br, struct super_block *sb, + int perm) +{ + int err; + struct kstatfs kst; + struct au_wbr *wbr; + + wbr = br->br_wbr; + au_rw_init(&wbr->wbr_wh_rwsem); + atomic_set(&wbr->wbr_wh_running, 0); + + /* + * a limit for rmdir/rename a dir + * cf. AUFS_MAX_NAMELEN in include/uapi/linux/aufs_type.h + */ + err = vfs_statfs(&br->br_path, &kst); + if (unlikely(err)) + goto out; + err = -EINVAL; + if (kst.f_namelen >= NAME_MAX) + err = au_br_init_wh(sb, br, perm); + else + pr_err("%pd(%s), unsupported namelen %ld\n", + au_br_dentry(br), + au_sbtype(au_br_dentry(br)->d_sb), kst.f_namelen); + +out: + return err; +} + +/* initialize a new branch */ +static int au_br_init(struct au_branch *br, struct super_block *sb, + struct au_opt_add *add) +{ + int err; + struct inode *h_inode; + + err = 0; + spin_lock_init(&br->br_xino.xi_nondir.spin); + init_waitqueue_head(&br->br_xino.xi_nondir.wqh); + br->br_perm = add->perm; + br->br_path = add->path; /* set first, path_get() later */ + spin_lock_init(&br->br_dykey_lock); + au_br_count_init(br); + atomic_set(&br->br_xino_running, 0); + br->br_id = au_new_br_id(sb); + AuDebugOn(br->br_id < 0); + + /* always, regardless the given option */ + err = au_dr_br_init(sb, br, &add->path); + if (unlikely(err)) + goto out_err; + + if (au_br_writable(add->perm)) { + err = au_wbr_init(br, sb, add->perm); + if (unlikely(err)) + goto out_err; + } + + if (au_opt_test(au_mntflags(sb), XINO)) { + h_inode = d_inode(add->path.dentry); + err = au_xino_br(sb, br, h_inode->i_ino, + au_sbr(sb, 0)->br_xino.xi_file, /*do_test*/1); + if (unlikely(err)) { + AuDebugOn(br->br_xino.xi_file); + goto out_err; + } + } + + sysaufs_br_init(br); + path_get(&br->br_path); + goto out; /* success */ + +out_err: + memset(&br->br_path, 0, sizeof(br->br_path)); +out: + return err; +} + +static void au_br_do_add_brp(struct au_sbinfo *sbinfo, aufs_bindex_t bindex, + struct au_branch *br, aufs_bindex_t bbot, + aufs_bindex_t amount) +{ + struct au_branch **brp; + + AuRwMustWriteLock(&sbinfo->si_rwsem); + + brp = sbinfo->si_branch + bindex; + memmove(brp + 1, brp, sizeof(*brp) * amount); + *brp = br; + sbinfo->si_bbot++; + if (unlikely(bbot < 0)) + sbinfo->si_bbot = 0; +} + +static void au_br_do_add_hdp(struct au_dinfo *dinfo, aufs_bindex_t bindex, + aufs_bindex_t bbot, aufs_bindex_t amount) +{ + struct au_hdentry *hdp; + + AuRwMustWriteLock(&dinfo->di_rwsem); + + hdp = au_hdentry(dinfo, bindex); + memmove(hdp + 1, hdp, sizeof(*hdp) * amount); + au_h_dentry_init(hdp); + dinfo->di_bbot++; + if (unlikely(bbot < 0)) + dinfo->di_btop = 0; +} + +static void au_br_do_add_hip(struct au_iinfo *iinfo, aufs_bindex_t bindex, + aufs_bindex_t bbot, aufs_bindex_t amount) +{ + struct au_hinode *hip; + + AuRwMustWriteLock(&iinfo->ii_rwsem); + + hip = au_hinode(iinfo, bindex); + memmove(hip + 1, hip, sizeof(*hip) * amount); + au_hinode_init(hip); + iinfo->ii_bbot++; + if (unlikely(bbot < 0)) + iinfo->ii_btop = 0; +} + +static void au_br_do_add(struct super_block *sb, struct au_branch *br, + aufs_bindex_t bindex) +{ + struct dentry *root, *h_dentry; + struct inode *root_inode, *h_inode; + aufs_bindex_t bbot, amount; + + root = sb->s_root; + root_inode = d_inode(root); + bbot = au_sbbot(sb); + amount = bbot + 1 - bindex; + h_dentry = au_br_dentry(br); + au_sbilist_lock(); + au_br_do_add_brp(au_sbi(sb), bindex, br, bbot, amount); + au_br_do_add_hdp(au_di(root), bindex, bbot, amount); + au_br_do_add_hip(au_ii(root_inode), bindex, bbot, amount); + au_set_h_dptr(root, bindex, dget(h_dentry)); + h_inode = d_inode(h_dentry); + au_set_h_iptr(root_inode, bindex, au_igrab(h_inode), /*flags*/0); + au_sbilist_unlock(); +} + +int au_br_add(struct super_block *sb, struct au_opt_add *add, int remount) +{ + int err; + aufs_bindex_t bbot, add_bindex; + struct dentry *root, *h_dentry; + struct inode *root_inode; + struct au_branch *add_branch; + + root = sb->s_root; + root_inode = d_inode(root); + IMustLock(root_inode); + IiMustWriteLock(root_inode); + err = test_add(sb, add, remount); + if (unlikely(err < 0)) + goto out; + if (err) { + err = 0; + goto out; /* success */ + } + + bbot = au_sbbot(sb); + add_branch = au_br_alloc(sb, bbot + 2, add->perm); + err = PTR_ERR(add_branch); + if (IS_ERR(add_branch)) + goto out; + + err = au_br_init(add_branch, sb, add); + if (unlikely(err)) { + au_br_do_free(add_branch); + goto out; + } + + add_bindex = add->bindex; + if (!remount) + au_br_do_add(sb, add_branch, add_bindex); + else { + sysaufs_brs_del(sb, add_bindex); + au_br_do_add(sb, add_branch, add_bindex); + sysaufs_brs_add(sb, add_bindex); + } + + h_dentry = add->path.dentry; + if (!add_bindex) { + au_cpup_attr_all(root_inode, /*force*/1); + sb->s_maxbytes = h_dentry->d_sb->s_maxbytes; + } else + au_add_nlink(root_inode, d_inode(h_dentry)); + + /* + * this test/set prevents aufs from handling unnecesary notify events + * of xino files, in case of re-adding a writable branch which was + * once detached from aufs. + */ + if (au_xino_brid(sb) < 0 + && au_br_writable(add_branch->br_perm) + && !au_test_fs_bad_xino(h_dentry->d_sb) + && add_branch->br_xino.xi_file + && add_branch->br_xino.xi_file->f_path.dentry->d_parent == h_dentry) + au_xino_brid_set(sb, add_branch->br_id); + +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +static unsigned long long au_farray_cb(struct super_block *sb, void *a, + unsigned long long max __maybe_unused, + void *arg) +{ + unsigned long long n; + struct file **p, *f; + struct hlist_bl_head *files; + struct hlist_bl_node *pos; + struct au_finfo *finfo; + + n = 0; + p = a; + files = &au_sbi(sb)->si_files; + hlist_bl_lock(files); + hlist_bl_for_each_entry(finfo, pos, files, fi_hlist) { + f = finfo->fi_file; + if (file_count(f) + && !special_file(file_inode(f)->i_mode)) { + get_file(f); + *p++ = f; + n++; + AuDebugOn(n > max); + } + } + hlist_bl_unlock(files); + + return n; +} + +static struct file **au_farray_alloc(struct super_block *sb, + unsigned long long *max) +{ + *max = au_nfiles(sb); + return au_array_alloc(max, au_farray_cb, sb, /*arg*/NULL); +} + +static void au_farray_free(struct file **a, unsigned long long max) +{ + unsigned long long ull; + + for (ull = 0; ull < max; ull++) + if (a[ull]) + fput(a[ull]); + kvfree(a); +} + +/* ---------------------------------------------------------------------- */ + +/* + * delete a branch + */ + +/* to show the line number, do not make it inlined function */ +#define AuVerbose(do_info, fmt, ...) do { \ + if (do_info) \ + pr_info(fmt, ##__VA_ARGS__); \ +} while (0) + +static int au_test_ibusy(struct inode *inode, aufs_bindex_t btop, + aufs_bindex_t bbot) +{ + return (inode && !S_ISDIR(inode->i_mode)) || btop == bbot; +} + +static int au_test_dbusy(struct dentry *dentry, aufs_bindex_t btop, + aufs_bindex_t bbot) +{ + return au_test_ibusy(d_inode(dentry), btop, bbot); +} + +/* + * test if the branch is deletable or not. + */ +static int test_dentry_busy(struct dentry *root, aufs_bindex_t bindex, + unsigned int sigen, const unsigned int verbose) +{ + int err, i, j, ndentry; + aufs_bindex_t btop, bbot; + struct au_dcsub_pages dpages; + struct au_dpage *dpage; + struct dentry *d; + + err = au_dpages_init(&dpages, GFP_NOFS); + if (unlikely(err)) + goto out; + err = au_dcsub_pages(&dpages, root, NULL, NULL); + if (unlikely(err)) + goto out_dpages; + + for (i = 0; !err && i < dpages.ndpage; i++) { + dpage = dpages.dpages + i; + ndentry = dpage->ndentry; + for (j = 0; !err && j < ndentry; j++) { + d = dpage->dentries[j]; + AuDebugOn(au_dcount(d) <= 0); + if (!au_digen_test(d, sigen)) { + di_read_lock_child(d, AuLock_IR); + if (unlikely(au_dbrange_test(d))) { + di_read_unlock(d, AuLock_IR); + continue; + } + } else { + di_write_lock_child(d); + if (unlikely(au_dbrange_test(d))) { + di_write_unlock(d); + continue; + } + err = au_reval_dpath(d, sigen); + if (!err) + di_downgrade_lock(d, AuLock_IR); + else { + di_write_unlock(d); + break; + } + } + + /* AuDbgDentry(d); */ + btop = au_dbtop(d); + bbot = au_dbbot(d); + if (btop <= bindex + && bindex <= bbot + && au_h_dptr(d, bindex) + && au_test_dbusy(d, btop, bbot)) { + err = -EBUSY; + AuVerbose(verbose, "busy %pd\n", d); + AuDbgDentry(d); + } + di_read_unlock(d, AuLock_IR); + } + } + +out_dpages: + au_dpages_free(&dpages); +out: + return err; +} + +static int test_inode_busy(struct super_block *sb, aufs_bindex_t bindex, + unsigned int sigen, const unsigned int verbose) +{ + int err; + unsigned long long max, ull; + struct inode *i, **array; + aufs_bindex_t btop, bbot; + + array = au_iarray_alloc(sb, &max); + err = PTR_ERR(array); + if (IS_ERR(array)) + goto out; + + err = 0; + AuDbg("b%d\n", bindex); + for (ull = 0; !err && ull < max; ull++) { + i = array[ull]; + if (unlikely(!i)) + break; + if (i->i_ino == AUFS_ROOT_INO) + continue; + + /* AuDbgInode(i); */ + if (au_iigen(i, NULL) == sigen) + ii_read_lock_child(i); + else { + ii_write_lock_child(i); + err = au_refresh_hinode_self(i); + au_iigen_dec(i); + if (!err) + ii_downgrade_lock(i); + else { + ii_write_unlock(i); + break; + } + } + + btop = au_ibtop(i); + bbot = au_ibbot(i); + if (btop <= bindex + && bindex <= bbot + && au_h_iptr(i, bindex) + && au_test_ibusy(i, btop, bbot)) { + err = -EBUSY; + AuVerbose(verbose, "busy i%lu\n", i->i_ino); + AuDbgInode(i); + } + ii_read_unlock(i); + } + au_iarray_free(array, max); + +out: + return err; +} + +static int test_children_busy(struct dentry *root, aufs_bindex_t bindex, + const unsigned int verbose) +{ + int err; + unsigned int sigen; + + sigen = au_sigen(root->d_sb); + DiMustNoWaiters(root); + IiMustNoWaiters(d_inode(root)); + di_write_unlock(root); + err = test_dentry_busy(root, bindex, sigen, verbose); + if (!err) + err = test_inode_busy(root->d_sb, bindex, sigen, verbose); + di_write_lock_child(root); /* aufs_write_lock() calls ..._child() */ + + return err; +} + +static int test_dir_busy(struct file *file, aufs_bindex_t br_id, + struct file **to_free, int *idx) +{ + int err; + unsigned char matched, root; + aufs_bindex_t bindex, bbot; + struct au_fidir *fidir; + struct au_hfile *hfile; + + err = 0; + root = IS_ROOT(file->f_path.dentry); + if (root) { + get_file(file); + to_free[*idx] = file; + (*idx)++; + goto out; + } + + matched = 0; + fidir = au_fi(file)->fi_hdir; + AuDebugOn(!fidir); + bbot = au_fbbot_dir(file); + for (bindex = au_fbtop(file); bindex <= bbot; bindex++) { + hfile = fidir->fd_hfile + bindex; + if (!hfile->hf_file) + continue; + + if (hfile->hf_br->br_id == br_id) { + matched = 1; + break; + } + } + if (matched) + err = -EBUSY; + +out: + return err; +} + +static int test_file_busy(struct super_block *sb, aufs_bindex_t br_id, + struct file **to_free, int opened) +{ + int err, idx; + unsigned long long ull, max; + aufs_bindex_t btop; + struct file *file, **array; + struct dentry *root; + struct au_hfile *hfile; + + array = au_farray_alloc(sb, &max); + err = PTR_ERR(array); + if (IS_ERR(array)) + goto out; + + err = 0; + idx = 0; + root = sb->s_root; + di_write_unlock(root); + for (ull = 0; ull < max; ull++) { + file = array[ull]; + if (unlikely(!file)) + break; + + /* AuDbg("%pD\n", file); */ + fi_read_lock(file); + btop = au_fbtop(file); + if (!d_is_dir(file->f_path.dentry)) { + hfile = &au_fi(file)->fi_htop; + if (hfile->hf_br->br_id == br_id) + err = -EBUSY; + } else + err = test_dir_busy(file, br_id, to_free, &idx); + fi_read_unlock(file); + if (unlikely(err)) + break; + } + di_write_lock_child(root); + au_farray_free(array, max); + AuDebugOn(idx > opened); + +out: + return err; +} + +static void br_del_file(struct file **to_free, unsigned long long opened, + aufs_bindex_t br_id) +{ + unsigned long long ull; + aufs_bindex_t bindex, btop, bbot, bfound; + struct file *file; + struct au_fidir *fidir; + struct au_hfile *hfile; + + for (ull = 0; ull < opened; ull++) { + file = to_free[ull]; + if (unlikely(!file)) + break; + + /* AuDbg("%pD\n", file); */ + AuDebugOn(!d_is_dir(file->f_path.dentry)); + bfound = -1; + fidir = au_fi(file)->fi_hdir; + AuDebugOn(!fidir); + fi_write_lock(file); + btop = au_fbtop(file); + bbot = au_fbbot_dir(file); + for (bindex = btop; bindex <= bbot; bindex++) { + hfile = fidir->fd_hfile + bindex; + if (!hfile->hf_file) + continue; + + if (hfile->hf_br->br_id == br_id) { + bfound = bindex; + break; + } + } + AuDebugOn(bfound < 0); + au_set_h_fptr(file, bfound, NULL); + if (bfound == btop) { + for (btop++; btop <= bbot; btop++) + if (au_hf_dir(file, btop)) { + au_set_fbtop(file, btop); + break; + } + } + fi_write_unlock(file); + } +} + +static void au_br_do_del_brp(struct au_sbinfo *sbinfo, + const aufs_bindex_t bindex, + const aufs_bindex_t bbot) +{ + struct au_branch **brp, **p; + + AuRwMustWriteLock(&sbinfo->si_rwsem); + + brp = sbinfo->si_branch + bindex; + if (bindex < bbot) + memmove(brp, brp + 1, sizeof(*brp) * (bbot - bindex)); + sbinfo->si_branch[0 + bbot] = NULL; + sbinfo->si_bbot--; + + p = au_krealloc(sbinfo->si_branch, sizeof(*p) * bbot, AuGFP_SBILIST, + /*may_shrink*/1); + if (p) + sbinfo->si_branch = p; + /* harmless error */ +} + +static void au_br_do_del_hdp(struct au_dinfo *dinfo, const aufs_bindex_t bindex, + const aufs_bindex_t bbot) +{ + struct au_hdentry *hdp, *p; + + AuRwMustWriteLock(&dinfo->di_rwsem); + + hdp = au_hdentry(dinfo, bindex); + if (bindex < bbot) + memmove(hdp, hdp + 1, sizeof(*hdp) * (bbot - bindex)); + /* au_h_dentry_init(au_hdentry(dinfo, bbot); */ + dinfo->di_bbot--; + + p = au_krealloc(dinfo->di_hdentry, sizeof(*p) * bbot, AuGFP_SBILIST, + /*may_shrink*/1); + if (p) + dinfo->di_hdentry = p; + /* harmless error */ +} + +static void au_br_do_del_hip(struct au_iinfo *iinfo, const aufs_bindex_t bindex, + const aufs_bindex_t bbot) +{ + struct au_hinode *hip, *p; + + AuRwMustWriteLock(&iinfo->ii_rwsem); + + hip = au_hinode(iinfo, bindex); + if (bindex < bbot) + memmove(hip, hip + 1, sizeof(*hip) * (bbot - bindex)); + /* au_hinode_init(au_hinode(iinfo, bbot)); */ + iinfo->ii_bbot--; + + p = au_krealloc(iinfo->ii_hinode, sizeof(*p) * bbot, AuGFP_SBILIST, + /*may_shrink*/1); + if (p) + iinfo->ii_hinode = p; + /* harmless error */ +} + +static void au_br_do_del(struct super_block *sb, aufs_bindex_t bindex, + struct au_branch *br) +{ + aufs_bindex_t bbot; + struct au_sbinfo *sbinfo; + struct dentry *root, *h_root; + struct inode *inode, *h_inode; + struct au_hinode *hinode; + + SiMustWriteLock(sb); + + root = sb->s_root; + inode = d_inode(root); + sbinfo = au_sbi(sb); + bbot = sbinfo->si_bbot; + + h_root = au_h_dptr(root, bindex); + hinode = au_hi(inode, bindex); + h_inode = au_igrab(hinode->hi_inode); + au_hiput(hinode); + + au_sbilist_lock(); + au_br_do_del_brp(sbinfo, bindex, bbot); + au_br_do_del_hdp(au_di(root), bindex, bbot); + au_br_do_del_hip(au_ii(inode), bindex, bbot); + au_sbilist_unlock(); + + /* ignore an error */ + au_dr_br_fin(sb, br); /* always, regardless the mount option */ + + dput(h_root); + iput(h_inode); + au_br_do_free(br); +} + +static unsigned long long empty_cb(struct super_block *sb, void *array, + unsigned long long max, void *arg) +{ + return max; +} + +int au_br_del(struct super_block *sb, struct au_opt_del *del, int remount) +{ + int err, rerr, i; + unsigned long long opened; + unsigned int mnt_flags; + aufs_bindex_t bindex, bbot, br_id; + unsigned char do_wh, verbose; + struct au_branch *br; + struct au_wbr *wbr; + struct dentry *root; + struct file **to_free; + + err = 0; + opened = 0; + to_free = NULL; + root = sb->s_root; + bindex = au_find_dbindex(root, del->h_path.dentry); + if (bindex < 0) { + if (remount) + goto out; /* success */ + err = -ENOENT; + pr_err("%s no such branch\n", del->pathname); + goto out; + } + AuDbg("bindex b%d\n", bindex); + + err = -EBUSY; + mnt_flags = au_mntflags(sb); + verbose = !!au_opt_test(mnt_flags, VERBOSE); + bbot = au_sbbot(sb); + if (unlikely(!bbot)) { + AuVerbose(verbose, "no more branches left\n"); + goto out; + } + br = au_sbr(sb, bindex); + AuDebugOn(!path_equal(&br->br_path, &del->h_path)); + + br_id = br->br_id; + opened = au_br_count(br); + if (unlikely(opened)) { + to_free = au_array_alloc(&opened, empty_cb, sb, NULL); + err = PTR_ERR(to_free); + if (IS_ERR(to_free)) + goto out; + + err = test_file_busy(sb, br_id, to_free, opened); + if (unlikely(err)) { + AuVerbose(verbose, "%llu file(s) opened\n", opened); + goto out; + } + } + + wbr = br->br_wbr; + do_wh = wbr && (wbr->wbr_whbase || wbr->wbr_plink || wbr->wbr_orph); + if (do_wh) { + /* instead of WbrWhMustWriteLock(wbr) */ + SiMustWriteLock(sb); + for (i = 0; i < AuBrWh_Last; i++) { + dput(wbr->wbr_wh[i]); + wbr->wbr_wh[i] = NULL; + } + } + + err = test_children_busy(root, bindex, verbose); + if (unlikely(err)) { + if (do_wh) + goto out_wh; + goto out; + } + + err = 0; + if (to_free) { + /* + * now we confirmed the branch is deletable. + * let's free the remaining opened dirs on the branch. + */ + di_write_unlock(root); + br_del_file(to_free, opened, br_id); + di_write_lock_child(root); + } + + if (!remount) + au_br_do_del(sb, bindex, br); + else { + sysaufs_brs_del(sb, bindex); + au_br_do_del(sb, bindex, br); + sysaufs_brs_add(sb, bindex); + } + + if (!bindex) { + au_cpup_attr_all(d_inode(root), /*force*/1); + sb->s_maxbytes = au_sbr_sb(sb, 0)->s_maxbytes; + } else + au_sub_nlink(d_inode(root), d_inode(del->h_path.dentry)); + if (au_opt_test(mnt_flags, PLINK)) + au_plink_half_refresh(sb, br_id); + + if (au_xino_brid(sb) == br_id) + au_xino_brid_set(sb, -1); + goto out; /* success */ + +out_wh: + /* revert */ + rerr = au_br_init_wh(sb, br, br->br_perm); + if (rerr) + pr_warn("failed re-creating base whiteout, %s. (%d)\n", + del->pathname, rerr); +out: + if (to_free) + au_farray_free(to_free, opened); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int au_ibusy(struct super_block *sb, struct aufs_ibusy __user *arg) +{ + int err; + aufs_bindex_t btop, bbot; + struct aufs_ibusy ibusy; + struct inode *inode, *h_inode; + + err = -EPERM; + if (unlikely(!capable(CAP_SYS_ADMIN))) + goto out; + + err = copy_from_user(&ibusy, arg, sizeof(ibusy)); + if (!err) + err = !access_ok(VERIFY_WRITE, &arg->h_ino, sizeof(arg->h_ino)); + if (unlikely(err)) { + err = -EFAULT; + AuTraceErr(err); + goto out; + } + + err = -EINVAL; + si_read_lock(sb, AuLock_FLUSH); + if (unlikely(ibusy.bindex < 0 || ibusy.bindex > au_sbbot(sb))) + goto out_unlock; + + err = 0; + ibusy.h_ino = 0; /* invalid */ + inode = ilookup(sb, ibusy.ino); + if (!inode + || inode->i_ino == AUFS_ROOT_INO + || au_is_bad_inode(inode)) + goto out_unlock; + + ii_read_lock_child(inode); + btop = au_ibtop(inode); + bbot = au_ibbot(inode); + if (btop <= ibusy.bindex && ibusy.bindex <= bbot) { + h_inode = au_h_iptr(inode, ibusy.bindex); + if (h_inode && au_test_ibusy(inode, btop, bbot)) + ibusy.h_ino = h_inode->i_ino; + } + ii_read_unlock(inode); + iput(inode); + +out_unlock: + si_read_unlock(sb); + if (!err) { + err = __put_user(ibusy.h_ino, &arg->h_ino); + if (unlikely(err)) { + err = -EFAULT; + AuTraceErr(err); + } + } +out: + return err; +} + +long au_ibusy_ioctl(struct file *file, unsigned long arg) +{ + return au_ibusy(file->f_path.dentry->d_sb, (void __user *)arg); +} + +#ifdef CONFIG_COMPAT +long au_ibusy_compat_ioctl(struct file *file, unsigned long arg) +{ + return au_ibusy(file->f_path.dentry->d_sb, compat_ptr(arg)); +} +#endif + +/* ---------------------------------------------------------------------- */ + +/* + * change a branch permission + */ + +static void au_warn_ima(void) +{ +#ifdef CONFIG_IMA + /* since it doesn't support mark_files_ro() */ + AuWarn1("RW -> RO makes IMA to produce wrong message\n"); +#endif +} + +static int do_need_sigen_inc(int a, int b) +{ + return au_br_whable(a) && !au_br_whable(b); +} + +static int need_sigen_inc(int old, int new) +{ + return do_need_sigen_inc(old, new) + || do_need_sigen_inc(new, old); +} + +static int au_br_mod_files_ro(struct super_block *sb, aufs_bindex_t bindex) +{ + int err, do_warn; + unsigned int mnt_flags; + unsigned long long ull, max; + aufs_bindex_t br_id; + unsigned char verbose, writer; + struct file *file, *hf, **array; + struct au_hfile *hfile; + + mnt_flags = au_mntflags(sb); + verbose = !!au_opt_test(mnt_flags, VERBOSE); + + array = au_farray_alloc(sb, &max); + err = PTR_ERR(array); + if (IS_ERR(array)) + goto out; + + do_warn = 0; + br_id = au_sbr_id(sb, bindex); + for (ull = 0; ull < max; ull++) { + file = array[ull]; + if (unlikely(!file)) + break; + + /* AuDbg("%pD\n", file); */ + fi_read_lock(file); + if (unlikely(au_test_mmapped(file))) { + err = -EBUSY; + AuVerbose(verbose, "mmapped %pD\n", file); + AuDbgFile(file); + FiMustNoWaiters(file); + fi_read_unlock(file); + goto out_array; + } + + hfile = &au_fi(file)->fi_htop; + hf = hfile->hf_file; + if (!d_is_reg(file->f_path.dentry) + || !(file->f_mode & FMODE_WRITE) + || hfile->hf_br->br_id != br_id + || !(hf->f_mode & FMODE_WRITE)) + array[ull] = NULL; + else { + do_warn = 1; + get_file(file); + } + + FiMustNoWaiters(file); + fi_read_unlock(file); + fput(file); + } + + err = 0; + if (do_warn) + au_warn_ima(); + + for (ull = 0; ull < max; ull++) { + file = array[ull]; + if (!file) + continue; + + /* todo: already flushed? */ + /* + * fs/super.c:mark_files_ro() is gone, but aufs keeps its + * approach which resets f_mode and calls mnt_drop_write() and + * file_release_write() for each file, because the branch + * attribute in aufs world is totally different from the native + * fs rw/ro mode. + */ + /* fi_read_lock(file); */ + hfile = &au_fi(file)->fi_htop; + hf = hfile->hf_file; + /* fi_read_unlock(file); */ + spin_lock(&hf->f_lock); + writer = !!(hf->f_mode & FMODE_WRITER); + hf->f_mode &= ~(FMODE_WRITE | FMODE_WRITER); + spin_unlock(&hf->f_lock); + if (writer) { + put_write_access(file_inode(hf)); + __mnt_drop_write(hf->f_path.mnt); + } + } + +out_array: + au_farray_free(array, max); +out: + AuTraceErr(err); + return err; +} + +int au_br_mod(struct super_block *sb, struct au_opt_mod *mod, int remount, + int *do_refresh) +{ + int err, rerr; + aufs_bindex_t bindex; + struct dentry *root; + struct au_branch *br; + struct au_br_fhsm *bf; + + root = sb->s_root; + bindex = au_find_dbindex(root, mod->h_root); + if (bindex < 0) { + if (remount) + return 0; /* success */ + err = -ENOENT; + pr_err("%s no such branch\n", mod->path); + goto out; + } + AuDbg("bindex b%d\n", bindex); + + err = test_br(d_inode(mod->h_root), mod->perm, mod->path); + if (unlikely(err)) + goto out; + + br = au_sbr(sb, bindex); + AuDebugOn(mod->h_root != au_br_dentry(br)); + if (br->br_perm == mod->perm) + return 0; /* success */ + + /* pre-allocate for non-fhsm --> fhsm */ + bf = NULL; + if (!au_br_fhsm(br->br_perm) && au_br_fhsm(mod->perm)) { + err = au_fhsm_br_alloc(br); + if (unlikely(err)) + goto out; + bf = br->br_fhsm; + br->br_fhsm = NULL; + } + + if (au_br_writable(br->br_perm)) { + /* remove whiteout base */ + err = au_br_init_wh(sb, br, mod->perm); + if (unlikely(err)) + goto out_bf; + + if (!au_br_writable(mod->perm)) { + /* rw --> ro, file might be mmapped */ + DiMustNoWaiters(root); + IiMustNoWaiters(d_inode(root)); + di_write_unlock(root); + err = au_br_mod_files_ro(sb, bindex); + /* aufs_write_lock() calls ..._child() */ + di_write_lock_child(root); + + if (unlikely(err)) { + rerr = -ENOMEM; + br->br_wbr = kzalloc(sizeof(*br->br_wbr), + GFP_NOFS); + if (br->br_wbr) + rerr = au_wbr_init(br, sb, br->br_perm); + if (unlikely(rerr)) { + AuIOErr("nested error %d (%d)\n", + rerr, err); + br->br_perm = mod->perm; + } + } + } + } else if (au_br_writable(mod->perm)) { + /* ro --> rw */ + err = -ENOMEM; + br->br_wbr = kzalloc(sizeof(*br->br_wbr), GFP_NOFS); + if (br->br_wbr) { + err = au_wbr_init(br, sb, mod->perm); + if (unlikely(err)) { + kfree(br->br_wbr); + br->br_wbr = NULL; + } + } + } + if (unlikely(err)) + goto out_bf; + + if (au_br_fhsm(br->br_perm)) { + if (!au_br_fhsm(mod->perm)) { + /* fhsm --> non-fhsm */ + au_br_fhsm_fin(br->br_fhsm); + kfree(br->br_fhsm); + br->br_fhsm = NULL; + } + } else if (au_br_fhsm(mod->perm)) + /* non-fhsm --> fhsm */ + br->br_fhsm = bf; + + *do_refresh |= need_sigen_inc(br->br_perm, mod->perm); + br->br_perm = mod->perm; + goto out; /* success */ + +out_bf: + kfree(bf); +out: + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +int au_br_stfs(struct au_branch *br, struct aufs_stfs *stfs) +{ + int err; + struct kstatfs kstfs; + + err = vfs_statfs(&br->br_path, &kstfs); + if (!err) { + stfs->f_blocks = kstfs.f_blocks; + stfs->f_bavail = kstfs.f_bavail; + stfs->f_files = kstfs.f_files; + stfs->f_ffree = kstfs.f_ffree; + } + + return err; +} diff --git a/include/fs/aufs/branch.h b/include/fs/aufs/branch.h new file mode 100644 index 00000000000..65fdd2aa693 --- /dev/null +++ b/include/fs/aufs/branch.h @@ -0,0 +1,333 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * branch filesystems and xino for them + */ + +#ifndef __AUFS_BRANCH_H__ +#define __AUFS_BRANCH_H__ + +#ifdef __KERNEL__ + +#include +#include "dirren.h" +#include "dynop.h" +#include "rwsem.h" +#include "super.h" + +/* ---------------------------------------------------------------------- */ + +/* a xino file */ +struct au_xino_file { + struct file *xi_file; + struct { + spinlock_t spin; + ino_t *array; + int total; + /* reserved for future use */ + /* unsigned long *bitmap; */ + wait_queue_head_t wqh; + } xi_nondir; + + /* todo: make xino files an array to support huge inode number */ + +#ifdef CONFIG_DEBUG_FS + struct dentry *xi_dbgaufs; +#endif +}; + +/* File-based Hierarchical Storage Management */ +struct au_br_fhsm { +#ifdef CONFIG_AUFS_FHSM + struct mutex bf_lock; + unsigned long bf_jiffy; + struct aufs_stfs bf_stfs; + int bf_readable; +#endif +}; + +/* members for writable branch only */ +enum {AuBrWh_BASE, AuBrWh_PLINK, AuBrWh_ORPH, AuBrWh_Last}; +struct au_wbr { + struct au_rwsem wbr_wh_rwsem; + struct dentry *wbr_wh[AuBrWh_Last]; + atomic_t wbr_wh_running; +#define wbr_whbase wbr_wh[AuBrWh_BASE] /* whiteout base */ +#define wbr_plink wbr_wh[AuBrWh_PLINK] /* pseudo-link dir */ +#define wbr_orph wbr_wh[AuBrWh_ORPH] /* dir for orphans */ + + /* mfs mode */ + unsigned long long wbr_bytes; +}; + +/* ext2 has 3 types of operations at least, ext3 has 4 */ +#define AuBrDynOp (AuDyLast * 4) + +#ifdef CONFIG_AUFS_HFSNOTIFY +/* support for asynchronous destruction */ +struct au_br_hfsnotify { + struct fsnotify_group *hfsn_group; +}; +#endif + +/* sysfs entries */ +struct au_brsysfs { + char name[16]; + struct attribute attr; +}; + +enum { + AuBrSysfs_BR, + AuBrSysfs_BRID, + AuBrSysfs_Last +}; + +/* protected by superblock rwsem */ +struct au_branch { + struct au_xino_file br_xino; + + aufs_bindex_t br_id; + + int br_perm; + struct path br_path; + spinlock_t br_dykey_lock; + struct au_dykey *br_dykey[AuBrDynOp]; + struct percpu_counter br_count; + + struct au_wbr *br_wbr; + struct au_br_fhsm *br_fhsm; + + /* xino truncation */ + atomic_t br_xino_running; + +#ifdef CONFIG_AUFS_HFSNOTIFY + struct au_br_hfsnotify *br_hfsn; +#endif + +#ifdef CONFIG_SYSFS + /* entries under sysfs per mount-point */ + struct au_brsysfs br_sysfs[AuBrSysfs_Last]; +#endif + + struct au_dr_br br_dirren; +}; + +/* ---------------------------------------------------------------------- */ + +static inline struct vfsmount *au_br_mnt(struct au_branch *br) +{ + return br->br_path.mnt; +} + +static inline struct dentry *au_br_dentry(struct au_branch *br) +{ + return br->br_path.dentry; +} + +static inline struct super_block *au_br_sb(struct au_branch *br) +{ + return au_br_mnt(br)->mnt_sb; +} + +static inline void au_br_get(struct au_branch *br) +{ + percpu_counter_inc(&br->br_count); +} + +static inline void au_br_put(struct au_branch *br) +{ + percpu_counter_dec(&br->br_count); +} + +static inline s64 au_br_count(struct au_branch *br) +{ + return percpu_counter_sum(&br->br_count); +} + +static inline void au_br_count_init(struct au_branch *br) +{ + percpu_counter_init(&br->br_count, 0, GFP_NOFS); +} + +static inline void au_br_count_fin(struct au_branch *br) +{ + percpu_counter_destroy(&br->br_count); +} + +static inline int au_br_rdonly(struct au_branch *br) +{ + return (sb_rdonly(au_br_sb(br)) + || !au_br_writable(br->br_perm)) + ? -EROFS : 0; +} + +static inline int au_br_hnotifyable(int brperm __maybe_unused) +{ +#ifdef CONFIG_AUFS_HNOTIFY + return !(brperm & AuBrPerm_RR); +#else + return 0; +#endif +} + +static inline int au_br_test_oflag(int oflag, struct au_branch *br) +{ + int err, exec_flag; + + err = 0; + exec_flag = oflag & __FMODE_EXEC; + if (unlikely(exec_flag && path_noexec(&br->br_path))) + err = -EACCES; + + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* branch.c */ +struct au_sbinfo; +void au_br_free(struct au_sbinfo *sinfo); +int au_br_index(struct super_block *sb, aufs_bindex_t br_id); +struct au_opt_add; +int au_br_add(struct super_block *sb, struct au_opt_add *add, int remount); +struct au_opt_del; +int au_br_del(struct super_block *sb, struct au_opt_del *del, int remount); +long au_ibusy_ioctl(struct file *file, unsigned long arg); +#ifdef CONFIG_COMPAT +long au_ibusy_compat_ioctl(struct file *file, unsigned long arg); +#endif +struct au_opt_mod; +int au_br_mod(struct super_block *sb, struct au_opt_mod *mod, int remount, + int *do_refresh); +struct aufs_stfs; +int au_br_stfs(struct au_branch *br, struct aufs_stfs *stfs); + +/* xino.c */ +static const loff_t au_loff_max = LLONG_MAX; + +int au_xib_trunc(struct super_block *sb); +ssize_t xino_fread(vfs_readf_t func, struct file *file, void *buf, size_t size, + loff_t *pos); +ssize_t xino_fwrite(vfs_writef_t func, struct file *file, void *buf, + size_t size, loff_t *pos); +struct file *au_xino_create2(struct file *base_file, struct file *copy_src); +struct file *au_xino_create(struct super_block *sb, char *fname, int silent); +ino_t au_xino_new_ino(struct super_block *sb); +void au_xino_delete_inode(struct inode *inode, const int unlinked); +int au_xino_write(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino, + ino_t ino); +int au_xino_read(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino, + ino_t *ino); +int au_xino_br(struct super_block *sb, struct au_branch *br, ino_t hino, + struct file *base_file, int do_test); +int au_xino_trunc(struct super_block *sb, aufs_bindex_t bindex); + +struct au_opt_xino; +int au_xino_set(struct super_block *sb, struct au_opt_xino *xino, int remount); +void au_xino_clr(struct super_block *sb); +struct file *au_xino_def(struct super_block *sb); +int au_xino_path(struct seq_file *seq, struct file *file); + +void au_xinondir_leave(struct super_block *sb, aufs_bindex_t bindex, + ino_t h_ino, int idx); +int au_xinondir_enter(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino, + int *idx); + +/* ---------------------------------------------------------------------- */ + +/* Superblock to branch */ +static inline +aufs_bindex_t au_sbr_id(struct super_block *sb, aufs_bindex_t bindex) +{ + return au_sbr(sb, bindex)->br_id; +} + +static inline +struct vfsmount *au_sbr_mnt(struct super_block *sb, aufs_bindex_t bindex) +{ + return au_br_mnt(au_sbr(sb, bindex)); +} + +static inline +struct super_block *au_sbr_sb(struct super_block *sb, aufs_bindex_t bindex) +{ + return au_br_sb(au_sbr(sb, bindex)); +} + +static inline void au_sbr_get(struct super_block *sb, aufs_bindex_t bindex) +{ + au_br_get(au_sbr(sb, bindex)); +} + +static inline void au_sbr_put(struct super_block *sb, aufs_bindex_t bindex) +{ + au_br_put(au_sbr(sb, bindex)); +} + +static inline int au_sbr_perm(struct super_block *sb, aufs_bindex_t bindex) +{ + return au_sbr(sb, bindex)->br_perm; +} + +static inline int au_sbr_whable(struct super_block *sb, aufs_bindex_t bindex) +{ + return au_br_whable(au_sbr_perm(sb, bindex)); +} + +/* ---------------------------------------------------------------------- */ + +#define wbr_wh_read_lock(wbr) au_rw_read_lock(&(wbr)->wbr_wh_rwsem) +#define wbr_wh_write_lock(wbr) au_rw_write_lock(&(wbr)->wbr_wh_rwsem) +#define wbr_wh_read_trylock(wbr) au_rw_read_trylock(&(wbr)->wbr_wh_rwsem) +#define wbr_wh_write_trylock(wbr) au_rw_write_trylock(&(wbr)->wbr_wh_rwsem) +/* +#define wbr_wh_read_trylock_nested(wbr) \ + au_rw_read_trylock_nested(&(wbr)->wbr_wh_rwsem) +#define wbr_wh_write_trylock_nested(wbr) \ + au_rw_write_trylock_nested(&(wbr)->wbr_wh_rwsem) +*/ + +#define wbr_wh_read_unlock(wbr) au_rw_read_unlock(&(wbr)->wbr_wh_rwsem) +#define wbr_wh_write_unlock(wbr) au_rw_write_unlock(&(wbr)->wbr_wh_rwsem) +#define wbr_wh_downgrade_lock(wbr) au_rw_dgrade_lock(&(wbr)->wbr_wh_rwsem) + +#define WbrWhMustNoWaiters(wbr) AuRwMustNoWaiters(&(wbr)->wbr_wh_rwsem) +#define WbrWhMustAnyLock(wbr) AuRwMustAnyLock(&(wbr)->wbr_wh_rwsem) +#define WbrWhMustWriteLock(wbr) AuRwMustWriteLock(&(wbr)->wbr_wh_rwsem) + +/* ---------------------------------------------------------------------- */ + +#ifdef CONFIG_AUFS_FHSM +static inline void au_br_fhsm_init(struct au_br_fhsm *brfhsm) +{ + mutex_init(&brfhsm->bf_lock); + brfhsm->bf_jiffy = 0; + brfhsm->bf_readable = 0; +} + +static inline void au_br_fhsm_fin(struct au_br_fhsm *brfhsm) +{ + mutex_destroy(&brfhsm->bf_lock); +} +#else +AuStubVoid(au_br_fhsm_init, struct au_br_fhsm *brfhsm) +AuStubVoid(au_br_fhsm_fin, struct au_br_fhsm *brfhsm) +#endif + +#endif /* __KERNEL__ */ +#endif /* __AUFS_BRANCH_H__ */ diff --git a/include/fs/aufs/conf.mk b/include/fs/aufs/conf.mk new file mode 100644 index 00000000000..12782f8e0f3 --- /dev/null +++ b/include/fs/aufs/conf.mk @@ -0,0 +1,40 @@ +# SPDX-License-Identifier: GPL-2.0 + +AuConfStr = CONFIG_AUFS_FS=${CONFIG_AUFS_FS} + +define AuConf +ifdef ${1} +AuConfStr += ${1}=${${1}} +endif +endef + +AuConfAll = BRANCH_MAX_127 BRANCH_MAX_511 BRANCH_MAX_1023 BRANCH_MAX_32767 \ + SBILIST \ + HNOTIFY HFSNOTIFY \ + EXPORT INO_T_64 \ + XATTR \ + FHSM \ + RDU \ + DIRREN \ + SHWH \ + BR_RAMFS \ + BR_FUSE POLL \ + BR_HFSPLUS \ + BDEV_LOOP \ + DEBUG MAGIC_SYSRQ +$(foreach i, ${AuConfAll}, \ + $(eval $(call AuConf,CONFIG_AUFS_${i}))) + +AuConfName = ${obj}/conf.str +${AuConfName}.tmp: FORCE + @echo ${AuConfStr} | tr ' ' '\n' | sed -e 's/^/"/' -e 's/$$/\\n"/' > $@ +${AuConfName}: ${AuConfName}.tmp + @diff -q $< $@ > /dev/null 2>&1 || { \ + echo ' GEN ' $@; \ + cp -p $< $@; \ + } +FORCE: +clean-files += ${AuConfName} ${AuConfName}.tmp +${obj}/sysfs.o: ${AuConfName} + +-include ${srctree}/${src}/conf_priv.mk diff --git a/include/fs/aufs/cpup.c b/include/fs/aufs/cpup.c new file mode 100644 index 00000000000..1289cd96537 --- /dev/null +++ b/include/fs/aufs/cpup.c @@ -0,0 +1,1442 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * copy-up functions, see wbr_policy.c for copy-down + */ + +#include +#include +#include +#include "aufs.h" + +void au_cpup_attr_flags(struct inode *dst, unsigned int iflags) +{ + const unsigned int mask = S_DEAD | S_SWAPFILE | S_PRIVATE + | S_NOATIME | S_NOCMTIME | S_AUTOMOUNT; + + BUILD_BUG_ON(sizeof(iflags) != sizeof(dst->i_flags)); + + dst->i_flags |= iflags & ~mask; + if (au_test_fs_notime(dst->i_sb)) + dst->i_flags |= S_NOATIME | S_NOCMTIME; +} + +void au_cpup_attr_timesizes(struct inode *inode) +{ + struct inode *h_inode; + + h_inode = au_h_iptr(inode, au_ibtop(inode)); + fsstack_copy_attr_times(inode, h_inode); + fsstack_copy_inode_size(inode, h_inode); +} + +void au_cpup_attr_nlink(struct inode *inode, int force) +{ + struct inode *h_inode; + struct super_block *sb; + aufs_bindex_t bindex, bbot; + + sb = inode->i_sb; + bindex = au_ibtop(inode); + h_inode = au_h_iptr(inode, bindex); + if (!force + && !S_ISDIR(h_inode->i_mode) + && au_opt_test(au_mntflags(sb), PLINK) + && au_plink_test(inode)) + return; + + /* + * 0 can happen in revalidating. + * h_inode->i_mutex may not be held here, but it is harmless since once + * i_nlink reaches 0, it will never become positive except O_TMPFILE + * case. + * todo: O_TMPFILE+linkat(AT_SYMLINK_FOLLOW) bypassing aufs may cause + * the incorrect link count. + */ + set_nlink(inode, h_inode->i_nlink); + + /* + * fewer nlink makes find(1) noisy, but larger nlink doesn't. + * it may includes whplink directory. + */ + if (S_ISDIR(h_inode->i_mode)) { + bbot = au_ibbot(inode); + for (bindex++; bindex <= bbot; bindex++) { + h_inode = au_h_iptr(inode, bindex); + if (h_inode) + au_add_nlink(inode, h_inode); + } + } +} + +void au_cpup_attr_changeable(struct inode *inode) +{ + struct inode *h_inode; + + h_inode = au_h_iptr(inode, au_ibtop(inode)); + inode->i_mode = h_inode->i_mode; + inode->i_uid = h_inode->i_uid; + inode->i_gid = h_inode->i_gid; + au_cpup_attr_timesizes(inode); + au_cpup_attr_flags(inode, h_inode->i_flags); +} + +void au_cpup_igen(struct inode *inode, struct inode *h_inode) +{ + struct au_iinfo *iinfo = au_ii(inode); + + IiMustWriteLock(inode); + + iinfo->ii_higen = h_inode->i_generation; + iinfo->ii_hsb1 = h_inode->i_sb; +} + +void au_cpup_attr_all(struct inode *inode, int force) +{ + struct inode *h_inode; + + h_inode = au_h_iptr(inode, au_ibtop(inode)); + au_cpup_attr_changeable(inode); + if (inode->i_nlink > 0) + au_cpup_attr_nlink(inode, force); + inode->i_rdev = h_inode->i_rdev; + inode->i_blkbits = h_inode->i_blkbits; + au_cpup_igen(inode, h_inode); +} + +/* ---------------------------------------------------------------------- */ + +/* Note: dt_dentry and dt_h_dentry are not dget/dput-ed */ + +/* keep the timestamps of the parent dir when cpup */ +void au_dtime_store(struct au_dtime *dt, struct dentry *dentry, + struct path *h_path) +{ + struct inode *h_inode; + + dt->dt_dentry = dentry; + dt->dt_h_path = *h_path; + h_inode = d_inode(h_path->dentry); + dt->dt_atime = h_inode->i_atime; + dt->dt_mtime = h_inode->i_mtime; + /* smp_mb(); */ +} + +void au_dtime_revert(struct au_dtime *dt) +{ + struct iattr attr; + int err; + + attr.ia_atime = dt->dt_atime; + attr.ia_mtime = dt->dt_mtime; + attr.ia_valid = ATTR_FORCE | ATTR_MTIME | ATTR_MTIME_SET + | ATTR_ATIME | ATTR_ATIME_SET; + + /* no delegation since this is a directory */ + err = vfsub_notify_change(&dt->dt_h_path, &attr, /*delegated*/NULL); + if (unlikely(err)) + pr_warn("restoring timestamps failed(%d). ignored\n", err); +} + +/* ---------------------------------------------------------------------- */ + +/* internal use only */ +struct au_cpup_reg_attr { + int valid; + struct kstat st; + unsigned int iflags; /* inode->i_flags */ +}; + +static noinline_for_stack +int cpup_iattr(struct dentry *dst, aufs_bindex_t bindex, struct dentry *h_src, + struct au_cpup_reg_attr *h_src_attr) +{ + int err, sbits, icex; + unsigned int mnt_flags; + unsigned char verbose; + struct iattr ia; + struct path h_path; + struct inode *h_isrc, *h_idst; + struct kstat *h_st; + struct au_branch *br; + + h_path.dentry = au_h_dptr(dst, bindex); + h_idst = d_inode(h_path.dentry); + br = au_sbr(dst->d_sb, bindex); + h_path.mnt = au_br_mnt(br); + h_isrc = d_inode(h_src); + ia.ia_valid = ATTR_FORCE | ATTR_UID | ATTR_GID + | ATTR_ATIME | ATTR_MTIME + | ATTR_ATIME_SET | ATTR_MTIME_SET; + if (h_src_attr && h_src_attr->valid) { + h_st = &h_src_attr->st; + ia.ia_uid = h_st->uid; + ia.ia_gid = h_st->gid; + ia.ia_atime = h_st->atime; + ia.ia_mtime = h_st->mtime; + if (h_idst->i_mode != h_st->mode + && !S_ISLNK(h_idst->i_mode)) { + ia.ia_valid |= ATTR_MODE; + ia.ia_mode = h_st->mode; + } + sbits = !!(h_st->mode & (S_ISUID | S_ISGID)); + au_cpup_attr_flags(h_idst, h_src_attr->iflags); + } else { + ia.ia_uid = h_isrc->i_uid; + ia.ia_gid = h_isrc->i_gid; + ia.ia_atime = h_isrc->i_atime; + ia.ia_mtime = h_isrc->i_mtime; + if (h_idst->i_mode != h_isrc->i_mode + && !S_ISLNK(h_idst->i_mode)) { + ia.ia_valid |= ATTR_MODE; + ia.ia_mode = h_isrc->i_mode; + } + sbits = !!(h_isrc->i_mode & (S_ISUID | S_ISGID)); + au_cpup_attr_flags(h_idst, h_isrc->i_flags); + } + /* no delegation since it is just created */ + err = vfsub_notify_change(&h_path, &ia, /*delegated*/NULL); + + /* is this nfs only? */ + if (!err && sbits && au_test_nfs(h_path.dentry->d_sb)) { + ia.ia_valid = ATTR_FORCE | ATTR_MODE; + ia.ia_mode = h_isrc->i_mode; + err = vfsub_notify_change(&h_path, &ia, /*delegated*/NULL); + } + + icex = br->br_perm & AuBrAttr_ICEX; + if (!err) { + mnt_flags = au_mntflags(dst->d_sb); + verbose = !!au_opt_test(mnt_flags, VERBOSE); + err = au_cpup_xattr(h_path.dentry, h_src, icex, verbose); + } + + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int au_do_copy_file(struct file *dst, struct file *src, loff_t len, + char *buf, unsigned long blksize) +{ + int err; + size_t sz, rbytes, wbytes; + unsigned char all_zero; + char *p, *zp; + struct inode *h_inode; + /* reduce stack usage */ + struct iattr *ia; + + zp = page_address(ZERO_PAGE(0)); + if (unlikely(!zp)) + return -ENOMEM; /* possible? */ + + err = 0; + all_zero = 0; + while (len) { + AuDbg("len %lld\n", len); + sz = blksize; + if (len < blksize) + sz = len; + + rbytes = 0; + /* todo: signal_pending? */ + while (!rbytes || err == -EAGAIN || err == -EINTR) { + rbytes = vfsub_read_k(src, buf, sz, &src->f_pos); + err = rbytes; + } + if (unlikely(err < 0)) + break; + + all_zero = 0; + if (len >= rbytes && rbytes == blksize) + all_zero = !memcmp(buf, zp, rbytes); + if (!all_zero) { + wbytes = rbytes; + p = buf; + while (wbytes) { + size_t b; + + b = vfsub_write_k(dst, p, wbytes, &dst->f_pos); + err = b; + /* todo: signal_pending? */ + if (unlikely(err == -EAGAIN || err == -EINTR)) + continue; + if (unlikely(err < 0)) + break; + wbytes -= b; + p += b; + } + if (unlikely(err < 0)) + break; + } else { + loff_t res; + + AuLabel(hole); + res = vfsub_llseek(dst, rbytes, SEEK_CUR); + err = res; + if (unlikely(res < 0)) + break; + } + len -= rbytes; + err = 0; + } + + /* the last block may be a hole */ + if (!err && all_zero) { + AuLabel(last hole); + + err = 1; + if (au_test_nfs(dst->f_path.dentry->d_sb)) { + /* nfs requires this step to make last hole */ + /* is this only nfs? */ + do { + /* todo: signal_pending? */ + err = vfsub_write_k(dst, "\0", 1, &dst->f_pos); + } while (err == -EAGAIN || err == -EINTR); + if (err == 1) + dst->f_pos--; + } + + if (err == 1) { + ia = (void *)buf; + ia->ia_size = dst->f_pos; + ia->ia_valid = ATTR_SIZE | ATTR_FILE; + ia->ia_file = dst; + h_inode = file_inode(dst); + inode_lock_nested(h_inode, AuLsc_I_CHILD2); + /* no delegation since it is just created */ + err = vfsub_notify_change(&dst->f_path, ia, + /*delegated*/NULL); + inode_unlock(h_inode); + } + } + + return err; +} + +int au_copy_file(struct file *dst, struct file *src, loff_t len) +{ + int err; + unsigned long blksize; + unsigned char do_kfree; + char *buf; + + err = -ENOMEM; + blksize = dst->f_path.dentry->d_sb->s_blocksize; + if (!blksize || PAGE_SIZE < blksize) + blksize = PAGE_SIZE; + AuDbg("blksize %lu\n", blksize); + do_kfree = (blksize != PAGE_SIZE && blksize >= sizeof(struct iattr *)); + if (do_kfree) + buf = kmalloc(blksize, GFP_NOFS); + else + buf = (void *)__get_free_page(GFP_NOFS); + if (unlikely(!buf)) + goto out; + + if (len > (1 << 22)) + AuDbg("copying a large file %lld\n", (long long)len); + + src->f_pos = 0; + dst->f_pos = 0; + err = au_do_copy_file(dst, src, len, buf, blksize); + if (do_kfree) + kfree(buf); + else + free_page((unsigned long)buf); + +out: + return err; +} + +static int au_do_copy(struct file *dst, struct file *src, loff_t len) +{ + int err; + struct super_block *h_src_sb; + struct inode *h_src_inode; + + h_src_inode = file_inode(src); + h_src_sb = h_src_inode->i_sb; + + /* XFS acquires inode_lock */ + if (!au_test_xfs(h_src_sb)) + err = au_copy_file(dst, src, len); + else { + inode_unlock_shared(h_src_inode); + err = au_copy_file(dst, src, len); + vfsub_inode_lock_shared_nested(h_src_inode, AuLsc_I_CHILD); + } + + return err; +} + +static int au_clone_or_copy(struct file *dst, struct file *src, loff_t len) +{ + int err; + struct super_block *h_src_sb; + struct inode *h_src_inode; + + h_src_inode = file_inode(src); + h_src_sb = h_src_inode->i_sb; + if (h_src_sb != file_inode(dst)->i_sb + || !dst->f_op->clone_file_range) { + err = au_do_copy(dst, src, len); + goto out; + } + + if (!au_test_nfs(h_src_sb)) { + inode_unlock_shared(h_src_inode); + err = vfsub_clone_file_range(src, dst, len); + vfsub_inode_lock_shared_nested(h_src_inode, AuLsc_I_CHILD); + } else + err = vfsub_clone_file_range(src, dst, len); + /* older XFS has a condition in cloning */ + if (unlikely(err != -EOPNOTSUPP)) + goto out; + + /* the backend fs on NFS may not support cloning */ + err = au_do_copy(dst, src, len); + +out: + AuTraceErr(err); + return err; +} + +/* + * to support a sparse file which is opened with O_APPEND, + * we need to close the file. + */ +static int au_cp_regular(struct au_cp_generic *cpg) +{ + int err, i; + enum { SRC, DST }; + struct { + aufs_bindex_t bindex; + unsigned int flags; + struct dentry *dentry; + int force_wr; + struct file *file; + void *label; + } *f, file[] = { + { + .bindex = cpg->bsrc, + .flags = O_RDONLY | O_NOATIME | O_LARGEFILE, + .label = &&out + }, + { + .bindex = cpg->bdst, + .flags = O_WRONLY | O_NOATIME | O_LARGEFILE, + .force_wr = !!au_ftest_cpup(cpg->flags, RWDST), + .label = &&out_src + } + }; + struct super_block *sb, *h_src_sb; + struct inode *h_src_inode; + struct task_struct *tsk = current; + + /* bsrc branch can be ro/rw. */ + sb = cpg->dentry->d_sb; + f = file; + for (i = 0; i < 2; i++, f++) { + f->dentry = au_h_dptr(cpg->dentry, f->bindex); + f->file = au_h_open(cpg->dentry, f->bindex, f->flags, + /*file*/NULL, f->force_wr); + err = PTR_ERR(f->file); + if (IS_ERR(f->file)) + goto *f->label; + } + + /* try stopping to update while we copyup */ + h_src_inode = d_inode(file[SRC].dentry); + h_src_sb = h_src_inode->i_sb; + if (!au_test_nfs(h_src_sb)) + IMustLock(h_src_inode); + err = au_clone_or_copy(file[DST].file, file[SRC].file, cpg->len); + + /* i wonder if we had O_NO_DELAY_FPUT flag */ + if (tsk->flags & PF_KTHREAD) + __fput_sync(file[DST].file); + else { + /* it happend actually */ + fput(file[DST].file); + /* + * too bad. + * we have to call both since we don't know which place the file + * was added to. + */ + task_work_run(); + flush_delayed_fput(); + } + au_sbr_put(sb, file[DST].bindex); + +out_src: + fput(file[SRC].file); + au_sbr_put(sb, file[SRC].bindex); +out: + return err; +} + +static int au_do_cpup_regular(struct au_cp_generic *cpg, + struct au_cpup_reg_attr *h_src_attr) +{ + int err, rerr; + loff_t l; + struct path h_path; + struct inode *h_src_inode, *h_dst_inode; + + err = 0; + h_src_inode = au_h_iptr(d_inode(cpg->dentry), cpg->bsrc); + l = i_size_read(h_src_inode); + if (cpg->len == -1 || l < cpg->len) + cpg->len = l; + if (cpg->len) { + /* try stopping to update while we are referencing */ + vfsub_inode_lock_shared_nested(h_src_inode, AuLsc_I_CHILD); + au_pin_hdir_unlock(cpg->pin); + + h_path.dentry = au_h_dptr(cpg->dentry, cpg->bsrc); + h_path.mnt = au_sbr_mnt(cpg->dentry->d_sb, cpg->bsrc); + h_src_attr->iflags = h_src_inode->i_flags; + if (!au_test_nfs(h_src_inode->i_sb)) + err = vfsub_getattr(&h_path, &h_src_attr->st); + else { + inode_unlock_shared(h_src_inode); + err = vfsub_getattr(&h_path, &h_src_attr->st); + vfsub_inode_lock_shared_nested(h_src_inode, + AuLsc_I_CHILD); + } + if (unlikely(err)) { + inode_unlock_shared(h_src_inode); + goto out; + } + h_src_attr->valid = 1; + if (!au_test_nfs(h_src_inode->i_sb)) { + err = au_cp_regular(cpg); + inode_unlock_shared(h_src_inode); + } else { + inode_unlock_shared(h_src_inode); + err = au_cp_regular(cpg); + } + rerr = au_pin_hdir_relock(cpg->pin); + if (!err && rerr) + err = rerr; + } + if (!err && (h_src_inode->i_state & I_LINKABLE)) { + h_path.dentry = au_h_dptr(cpg->dentry, cpg->bdst); + h_dst_inode = d_inode(h_path.dentry); + spin_lock(&h_dst_inode->i_lock); + h_dst_inode->i_state |= I_LINKABLE; + spin_unlock(&h_dst_inode->i_lock); + } + +out: + return err; +} + +static int au_do_cpup_symlink(struct path *h_path, struct dentry *h_src, + struct inode *h_dir) +{ + int err, symlen; + mm_segment_t old_fs; + union { + char *k; + char __user *u; + } sym; + + err = -ENOMEM; + sym.k = (void *)__get_free_page(GFP_NOFS); + if (unlikely(!sym.k)) + goto out; + + /* unnecessary to support mmap_sem since symlink is not mmap-able */ + old_fs = get_fs(); + set_fs(KERNEL_DS); + symlen = vfs_readlink(h_src, sym.u, PATH_MAX); + err = symlen; + set_fs(old_fs); + + if (symlen > 0) { + sym.k[symlen] = 0; + err = vfsub_symlink(h_dir, h_path, sym.k); + } + free_page((unsigned long)sym.k); + +out: + return err; +} + +/* + * regardless 'acl' option, reset all ACL. + * All ACL will be copied up later from the original entry on the lower branch. + */ +static int au_reset_acl(struct inode *h_dir, struct path *h_path, umode_t mode) +{ + int err; + struct dentry *h_dentry; + struct inode *h_inode; + + h_dentry = h_path->dentry; + h_inode = d_inode(h_dentry); + /* forget_all_cached_acls(h_inode)); */ + err = vfsub_removexattr(h_dentry, XATTR_NAME_POSIX_ACL_ACCESS); + AuTraceErr(err); + if (err == -EOPNOTSUPP) + err = 0; + if (!err) + err = vfsub_acl_chmod(h_inode, mode); + + AuTraceErr(err); + return err; +} + +static int au_do_cpup_dir(struct au_cp_generic *cpg, struct dentry *dst_parent, + struct inode *h_dir, struct path *h_path) +{ + int err; + struct inode *dir, *inode; + + err = vfsub_removexattr(h_path->dentry, XATTR_NAME_POSIX_ACL_DEFAULT); + AuTraceErr(err); + if (err == -EOPNOTSUPP) + err = 0; + if (unlikely(err)) + goto out; + + /* + * strange behaviour from the users view, + * particularry setattr case + */ + dir = d_inode(dst_parent); + if (au_ibtop(dir) == cpg->bdst) + au_cpup_attr_nlink(dir, /*force*/1); + inode = d_inode(cpg->dentry); + au_cpup_attr_nlink(inode, /*force*/1); + +out: + return err; +} + +static noinline_for_stack +int cpup_entry(struct au_cp_generic *cpg, struct dentry *dst_parent, + struct au_cpup_reg_attr *h_src_attr) +{ + int err; + umode_t mode; + unsigned int mnt_flags; + unsigned char isdir, isreg, force; + const unsigned char do_dt = !!au_ftest_cpup(cpg->flags, DTIME); + struct au_dtime dt; + struct path h_path; + struct dentry *h_src, *h_dst, *h_parent; + struct inode *h_inode, *h_dir; + struct super_block *sb; + + /* bsrc branch can be ro/rw. */ + h_src = au_h_dptr(cpg->dentry, cpg->bsrc); + h_inode = d_inode(h_src); + AuDebugOn(h_inode != au_h_iptr(d_inode(cpg->dentry), cpg->bsrc)); + + /* try stopping to be referenced while we are creating */ + h_dst = au_h_dptr(cpg->dentry, cpg->bdst); + if (au_ftest_cpup(cpg->flags, RENAME)) + AuDebugOn(strncmp(h_dst->d_name.name, AUFS_WH_PFX, + AUFS_WH_PFX_LEN)); + h_parent = h_dst->d_parent; /* dir inode is locked */ + h_dir = d_inode(h_parent); + IMustLock(h_dir); + AuDebugOn(h_parent != h_dst->d_parent); + + sb = cpg->dentry->d_sb; + h_path.mnt = au_sbr_mnt(sb, cpg->bdst); + if (do_dt) { + h_path.dentry = h_parent; + au_dtime_store(&dt, dst_parent, &h_path); + } + h_path.dentry = h_dst; + + isreg = 0; + isdir = 0; + mode = h_inode->i_mode; + switch (mode & S_IFMT) { + case S_IFREG: + isreg = 1; + err = vfsub_create(h_dir, &h_path, S_IRUSR | S_IWUSR, + /*want_excl*/true); + if (!err) + err = au_do_cpup_regular(cpg, h_src_attr); + break; + case S_IFDIR: + isdir = 1; + err = vfsub_mkdir(h_dir, &h_path, mode); + if (!err) + err = au_do_cpup_dir(cpg, dst_parent, h_dir, &h_path); + break; + case S_IFLNK: + err = au_do_cpup_symlink(&h_path, h_src, h_dir); + break; + case S_IFCHR: + case S_IFBLK: + AuDebugOn(!capable(CAP_MKNOD)); + /*FALLTHROUGH*/ + case S_IFIFO: + case S_IFSOCK: + err = vfsub_mknod(h_dir, &h_path, mode, h_inode->i_rdev); + break; + default: + AuIOErr("Unknown inode type 0%o\n", mode); + err = -EIO; + } + if (!err) + err = au_reset_acl(h_dir, &h_path, mode); + + mnt_flags = au_mntflags(sb); + if (!au_opt_test(mnt_flags, UDBA_NONE) + && !isdir + && au_opt_test(mnt_flags, XINO) + && (h_inode->i_nlink == 1 + || (h_inode->i_state & I_LINKABLE)) + /* todo: unnecessary? */ + /* && d_inode(cpg->dentry)->i_nlink == 1 */ + && cpg->bdst < cpg->bsrc + && !au_ftest_cpup(cpg->flags, KEEPLINO)) + au_xino_write(sb, cpg->bsrc, h_inode->i_ino, /*ino*/0); + /* ignore this error */ + + if (!err) { + force = 0; + if (isreg) { + force = !!cpg->len; + if (cpg->len == -1) + force = !!i_size_read(h_inode); + } + au_fhsm_wrote(sb, cpg->bdst, force); + } + + if (do_dt) + au_dtime_revert(&dt); + return err; +} + +static int au_do_ren_after_cpup(struct au_cp_generic *cpg, struct path *h_path) +{ + int err; + struct dentry *dentry, *h_dentry, *h_parent, *parent; + struct inode *h_dir; + aufs_bindex_t bdst; + + dentry = cpg->dentry; + bdst = cpg->bdst; + h_dentry = au_h_dptr(dentry, bdst); + if (!au_ftest_cpup(cpg->flags, OVERWRITE)) { + dget(h_dentry); + au_set_h_dptr(dentry, bdst, NULL); + err = au_lkup_neg(dentry, bdst, /*wh*/0); + if (!err) + h_path->dentry = dget(au_h_dptr(dentry, bdst)); + au_set_h_dptr(dentry, bdst, h_dentry); + } else { + err = 0; + parent = dget_parent(dentry); + h_parent = au_h_dptr(parent, bdst); + dput(parent); + h_path->dentry = vfsub_lkup_one(&dentry->d_name, h_parent); + if (IS_ERR(h_path->dentry)) + err = PTR_ERR(h_path->dentry); + } + if (unlikely(err)) + goto out; + + h_parent = h_dentry->d_parent; /* dir inode is locked */ + h_dir = d_inode(h_parent); + IMustLock(h_dir); + AuDbg("%pd %pd\n", h_dentry, h_path->dentry); + /* no delegation since it is just created */ + err = vfsub_rename(h_dir, h_dentry, h_dir, h_path, /*delegated*/NULL, + /*flags*/0); + dput(h_path->dentry); + +out: + return err; +} + +/* + * copyup the @dentry from @bsrc to @bdst. + * the caller must set the both of lower dentries. + * @len is for truncating when it is -1 copyup the entire file. + * in link/rename cases, @dst_parent may be different from the real one. + * basic->bsrc can be larger than basic->bdst. + * aufs doesn't touch the credential so + * security_inode_copy_up{,_xattr}() are unnecrssary. + */ +static int au_cpup_single(struct au_cp_generic *cpg, struct dentry *dst_parent) +{ + int err, rerr; + aufs_bindex_t old_ibtop; + unsigned char isdir, plink; + struct dentry *h_src, *h_dst, *h_parent; + struct inode *dst_inode, *h_dir, *inode, *delegated, *src_inode; + struct super_block *sb; + struct au_branch *br; + /* to reuduce stack size */ + struct { + struct au_dtime dt; + struct path h_path; + struct au_cpup_reg_attr h_src_attr; + } *a; + + err = -ENOMEM; + a = kmalloc(sizeof(*a), GFP_NOFS); + if (unlikely(!a)) + goto out; + a->h_src_attr.valid = 0; + + sb = cpg->dentry->d_sb; + br = au_sbr(sb, cpg->bdst); + a->h_path.mnt = au_br_mnt(br); + h_dst = au_h_dptr(cpg->dentry, cpg->bdst); + h_parent = h_dst->d_parent; /* dir inode is locked */ + h_dir = d_inode(h_parent); + IMustLock(h_dir); + + h_src = au_h_dptr(cpg->dentry, cpg->bsrc); + inode = d_inode(cpg->dentry); + + if (!dst_parent) + dst_parent = dget_parent(cpg->dentry); + else + dget(dst_parent); + + plink = !!au_opt_test(au_mntflags(sb), PLINK); + dst_inode = au_h_iptr(inode, cpg->bdst); + if (dst_inode) { + if (unlikely(!plink)) { + err = -EIO; + AuIOErr("hi%lu(i%lu) exists on b%d " + "but plink is disabled\n", + dst_inode->i_ino, inode->i_ino, cpg->bdst); + goto out_parent; + } + + if (dst_inode->i_nlink) { + const int do_dt = au_ftest_cpup(cpg->flags, DTIME); + + h_src = au_plink_lkup(inode, cpg->bdst); + err = PTR_ERR(h_src); + if (IS_ERR(h_src)) + goto out_parent; + if (unlikely(d_is_negative(h_src))) { + err = -EIO; + AuIOErr("i%lu exists on b%d " + "but not pseudo-linked\n", + inode->i_ino, cpg->bdst); + dput(h_src); + goto out_parent; + } + + if (do_dt) { + a->h_path.dentry = h_parent; + au_dtime_store(&a->dt, dst_parent, &a->h_path); + } + + a->h_path.dentry = h_dst; + delegated = NULL; + err = vfsub_link(h_src, h_dir, &a->h_path, &delegated); + if (!err && au_ftest_cpup(cpg->flags, RENAME)) + err = au_do_ren_after_cpup(cpg, &a->h_path); + if (do_dt) + au_dtime_revert(&a->dt); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal link\n"); + iput(delegated); + } + dput(h_src); + goto out_parent; + } else + /* todo: cpup_wh_file? */ + /* udba work */ + au_update_ibrange(inode, /*do_put_zero*/1); + } + + isdir = S_ISDIR(inode->i_mode); + old_ibtop = au_ibtop(inode); + err = cpup_entry(cpg, dst_parent, &a->h_src_attr); + if (unlikely(err)) + goto out_rev; + dst_inode = d_inode(h_dst); + inode_lock_nested(dst_inode, AuLsc_I_CHILD2); + /* todo: necessary? */ + /* au_pin_hdir_unlock(cpg->pin); */ + + err = cpup_iattr(cpg->dentry, cpg->bdst, h_src, &a->h_src_attr); + if (unlikely(err)) { + /* todo: necessary? */ + /* au_pin_hdir_relock(cpg->pin); */ /* ignore an error */ + inode_unlock(dst_inode); + goto out_rev; + } + + if (cpg->bdst < old_ibtop) { + if (S_ISREG(inode->i_mode)) { + err = au_dy_iaop(inode, cpg->bdst, dst_inode); + if (unlikely(err)) { + /* ignore an error */ + /* au_pin_hdir_relock(cpg->pin); */ + inode_unlock(dst_inode); + goto out_rev; + } + } + au_set_ibtop(inode, cpg->bdst); + } else + au_set_ibbot(inode, cpg->bdst); + au_set_h_iptr(inode, cpg->bdst, au_igrab(dst_inode), + au_hi_flags(inode, isdir)); + + /* todo: necessary? */ + /* err = au_pin_hdir_relock(cpg->pin); */ + inode_unlock(dst_inode); + if (unlikely(err)) + goto out_rev; + + src_inode = d_inode(h_src); + if (!isdir + && (src_inode->i_nlink > 1 + || src_inode->i_state & I_LINKABLE) + && plink) + au_plink_append(inode, cpg->bdst, h_dst); + + if (au_ftest_cpup(cpg->flags, RENAME)) { + a->h_path.dentry = h_dst; + err = au_do_ren_after_cpup(cpg, &a->h_path); + } + if (!err) + goto out_parent; /* success */ + + /* revert */ +out_rev: + a->h_path.dentry = h_parent; + au_dtime_store(&a->dt, dst_parent, &a->h_path); + a->h_path.dentry = h_dst; + rerr = 0; + if (d_is_positive(h_dst)) { + if (!isdir) { + /* no delegation since it is just created */ + rerr = vfsub_unlink(h_dir, &a->h_path, + /*delegated*/NULL, /*force*/0); + } else + rerr = vfsub_rmdir(h_dir, &a->h_path); + } + au_dtime_revert(&a->dt); + if (rerr) { + AuIOErr("failed removing broken entry(%d, %d)\n", err, rerr); + err = -EIO; + } +out_parent: + dput(dst_parent); + kfree(a); +out: + return err; +} + +#if 0 /* reserved */ +struct au_cpup_single_args { + int *errp; + struct au_cp_generic *cpg; + struct dentry *dst_parent; +}; + +static void au_call_cpup_single(void *args) +{ + struct au_cpup_single_args *a = args; + + au_pin_hdir_acquire_nest(a->cpg->pin); + *a->errp = au_cpup_single(a->cpg, a->dst_parent); + au_pin_hdir_release(a->cpg->pin); +} +#endif + +/* + * prevent SIGXFSZ in copy-up. + * testing CAP_MKNOD is for generic fs, + * but CAP_FSETID is for xfs only, currently. + */ +static int au_cpup_sio_test(struct au_pin *pin, umode_t mode) +{ + int do_sio; + struct super_block *sb; + struct inode *h_dir; + + do_sio = 0; + sb = au_pinned_parent(pin)->d_sb; + if (!au_wkq_test() + && (!au_sbi(sb)->si_plink_maint_pid + || au_plink_maint(sb, AuLock_NOPLM))) { + switch (mode & S_IFMT) { + case S_IFREG: + /* no condition about RLIMIT_FSIZE and the file size */ + do_sio = 1; + break; + case S_IFCHR: + case S_IFBLK: + do_sio = !capable(CAP_MKNOD); + break; + } + if (!do_sio) + do_sio = ((mode & (S_ISUID | S_ISGID)) + && !capable(CAP_FSETID)); + /* this workaround may be removed in the future */ + if (!do_sio) { + h_dir = au_pinned_h_dir(pin); + do_sio = h_dir->i_mode & S_ISVTX; + } + } + + return do_sio; +} + +#if 0 /* reserved */ +int au_sio_cpup_single(struct au_cp_generic *cpg, struct dentry *dst_parent) +{ + int err, wkq_err; + struct dentry *h_dentry; + + h_dentry = au_h_dptr(cpg->dentry, cpg->bsrc); + if (!au_cpup_sio_test(pin, d_inode(h_dentry)->i_mode)) + err = au_cpup_single(cpg, dst_parent); + else { + struct au_cpup_single_args args = { + .errp = &err, + .cpg = cpg, + .dst_parent = dst_parent + }; + wkq_err = au_wkq_wait(au_call_cpup_single, &args); + if (unlikely(wkq_err)) + err = wkq_err; + } + + return err; +} +#endif + +/* + * copyup the @dentry from the first active lower branch to @bdst, + * using au_cpup_single(). + */ +static int au_cpup_simple(struct au_cp_generic *cpg) +{ + int err; + unsigned int flags_orig; + struct dentry *dentry; + + AuDebugOn(cpg->bsrc < 0); + + dentry = cpg->dentry; + DiMustWriteLock(dentry); + + err = au_lkup_neg(dentry, cpg->bdst, /*wh*/1); + if (!err) { + flags_orig = cpg->flags; + au_fset_cpup(cpg->flags, RENAME); + err = au_cpup_single(cpg, NULL); + cpg->flags = flags_orig; + if (!err) + return 0; /* success */ + + /* revert */ + au_set_h_dptr(dentry, cpg->bdst, NULL); + au_set_dbtop(dentry, cpg->bsrc); + } + + return err; +} + +struct au_cpup_simple_args { + int *errp; + struct au_cp_generic *cpg; +}; + +static void au_call_cpup_simple(void *args) +{ + struct au_cpup_simple_args *a = args; + + au_pin_hdir_acquire_nest(a->cpg->pin); + *a->errp = au_cpup_simple(a->cpg); + au_pin_hdir_release(a->cpg->pin); +} + +static int au_do_sio_cpup_simple(struct au_cp_generic *cpg) +{ + int err, wkq_err; + struct dentry *dentry, *parent; + struct file *h_file; + struct inode *h_dir; + + dentry = cpg->dentry; + h_file = NULL; + if (au_ftest_cpup(cpg->flags, HOPEN)) { + AuDebugOn(cpg->bsrc < 0); + h_file = au_h_open_pre(dentry, cpg->bsrc, /*force_wr*/0); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + } + + parent = dget_parent(dentry); + h_dir = au_h_iptr(d_inode(parent), cpg->bdst); + if (!au_test_h_perm_sio(h_dir, MAY_EXEC | MAY_WRITE) + && !au_cpup_sio_test(cpg->pin, d_inode(dentry)->i_mode)) + err = au_cpup_simple(cpg); + else { + struct au_cpup_simple_args args = { + .errp = &err, + .cpg = cpg + }; + wkq_err = au_wkq_wait(au_call_cpup_simple, &args); + if (unlikely(wkq_err)) + err = wkq_err; + } + + dput(parent); + if (h_file) + au_h_open_post(dentry, cpg->bsrc, h_file); + +out: + return err; +} + +int au_sio_cpup_simple(struct au_cp_generic *cpg) +{ + aufs_bindex_t bsrc, bbot; + struct dentry *dentry, *h_dentry; + + if (cpg->bsrc < 0) { + dentry = cpg->dentry; + bbot = au_dbbot(dentry); + for (bsrc = cpg->bdst + 1; bsrc <= bbot; bsrc++) { + h_dentry = au_h_dptr(dentry, bsrc); + if (h_dentry) { + AuDebugOn(d_is_negative(h_dentry)); + break; + } + } + AuDebugOn(bsrc > bbot); + cpg->bsrc = bsrc; + } + AuDebugOn(cpg->bsrc <= cpg->bdst); + return au_do_sio_cpup_simple(cpg); +} + +int au_sio_cpdown_simple(struct au_cp_generic *cpg) +{ + AuDebugOn(cpg->bdst <= cpg->bsrc); + return au_do_sio_cpup_simple(cpg); +} + +/* ---------------------------------------------------------------------- */ + +/* + * copyup the deleted file for writing. + */ +static int au_do_cpup_wh(struct au_cp_generic *cpg, struct dentry *wh_dentry, + struct file *file) +{ + int err; + unsigned int flags_orig; + aufs_bindex_t bsrc_orig; + struct au_dinfo *dinfo; + struct { + struct au_hdentry *hd; + struct dentry *h_dentry; + } hdst, hsrc; + + dinfo = au_di(cpg->dentry); + AuRwMustWriteLock(&dinfo->di_rwsem); + + bsrc_orig = cpg->bsrc; + cpg->bsrc = dinfo->di_btop; + hdst.hd = au_hdentry(dinfo, cpg->bdst); + hdst.h_dentry = hdst.hd->hd_dentry; + hdst.hd->hd_dentry = wh_dentry; + dinfo->di_btop = cpg->bdst; + + hsrc.h_dentry = NULL; + if (file) { + hsrc.hd = au_hdentry(dinfo, cpg->bsrc); + hsrc.h_dentry = hsrc.hd->hd_dentry; + hsrc.hd->hd_dentry = au_hf_top(file)->f_path.dentry; + } + flags_orig = cpg->flags; + cpg->flags = !AuCpup_DTIME; + err = au_cpup_single(cpg, /*h_parent*/NULL); + cpg->flags = flags_orig; + if (file) { + if (!err) + err = au_reopen_nondir(file); + hsrc.hd->hd_dentry = hsrc.h_dentry; + } + hdst.hd->hd_dentry = hdst.h_dentry; + dinfo->di_btop = cpg->bsrc; + cpg->bsrc = bsrc_orig; + + return err; +} + +static int au_cpup_wh(struct au_cp_generic *cpg, struct file *file) +{ + int err; + aufs_bindex_t bdst; + struct au_dtime dt; + struct dentry *dentry, *parent, *h_parent, *wh_dentry; + struct au_branch *br; + struct path h_path; + + dentry = cpg->dentry; + bdst = cpg->bdst; + br = au_sbr(dentry->d_sb, bdst); + parent = dget_parent(dentry); + h_parent = au_h_dptr(parent, bdst); + wh_dentry = au_whtmp_lkup(h_parent, br, &dentry->d_name); + err = PTR_ERR(wh_dentry); + if (IS_ERR(wh_dentry)) + goto out; + + h_path.dentry = h_parent; + h_path.mnt = au_br_mnt(br); + au_dtime_store(&dt, parent, &h_path); + err = au_do_cpup_wh(cpg, wh_dentry, file); + if (unlikely(err)) + goto out_wh; + + dget(wh_dentry); + h_path.dentry = wh_dentry; + if (!d_is_dir(wh_dentry)) { + /* no delegation since it is just created */ + err = vfsub_unlink(d_inode(h_parent), &h_path, + /*delegated*/NULL, /*force*/0); + } else + err = vfsub_rmdir(d_inode(h_parent), &h_path); + if (unlikely(err)) { + AuIOErr("failed remove copied-up tmp file %pd(%d)\n", + wh_dentry, err); + err = -EIO; + } + au_dtime_revert(&dt); + au_set_hi_wh(d_inode(dentry), bdst, wh_dentry); + +out_wh: + dput(wh_dentry); +out: + dput(parent); + return err; +} + +struct au_cpup_wh_args { + int *errp; + struct au_cp_generic *cpg; + struct file *file; +}; + +static void au_call_cpup_wh(void *args) +{ + struct au_cpup_wh_args *a = args; + + au_pin_hdir_acquire_nest(a->cpg->pin); + *a->errp = au_cpup_wh(a->cpg, a->file); + au_pin_hdir_release(a->cpg->pin); +} + +int au_sio_cpup_wh(struct au_cp_generic *cpg, struct file *file) +{ + int err, wkq_err; + aufs_bindex_t bdst; + struct dentry *dentry, *parent, *h_orph, *h_parent; + struct inode *dir, *h_dir, *h_tmpdir; + struct au_wbr *wbr; + struct au_pin wh_pin, *pin_orig; + + dentry = cpg->dentry; + bdst = cpg->bdst; + parent = dget_parent(dentry); + dir = d_inode(parent); + h_orph = NULL; + h_parent = NULL; + h_dir = au_igrab(au_h_iptr(dir, bdst)); + h_tmpdir = h_dir; + pin_orig = NULL; + if (!h_dir->i_nlink) { + wbr = au_sbr(dentry->d_sb, bdst)->br_wbr; + h_orph = wbr->wbr_orph; + + h_parent = dget(au_h_dptr(parent, bdst)); + au_set_h_dptr(parent, bdst, dget(h_orph)); + h_tmpdir = d_inode(h_orph); + au_set_h_iptr(dir, bdst, au_igrab(h_tmpdir), /*flags*/0); + + inode_lock_nested(h_tmpdir, AuLsc_I_PARENT3); + /* todo: au_h_open_pre()? */ + + pin_orig = cpg->pin; + au_pin_init(&wh_pin, dentry, bdst, AuLsc_DI_PARENT, + AuLsc_I_PARENT3, cpg->pin->udba, AuPin_DI_LOCKED); + cpg->pin = &wh_pin; + } + + if (!au_test_h_perm_sio(h_tmpdir, MAY_EXEC | MAY_WRITE) + && !au_cpup_sio_test(cpg->pin, d_inode(dentry)->i_mode)) + err = au_cpup_wh(cpg, file); + else { + struct au_cpup_wh_args args = { + .errp = &err, + .cpg = cpg, + .file = file + }; + wkq_err = au_wkq_wait(au_call_cpup_wh, &args); + if (unlikely(wkq_err)) + err = wkq_err; + } + + if (h_orph) { + inode_unlock(h_tmpdir); + /* todo: au_h_open_post()? */ + au_set_h_iptr(dir, bdst, au_igrab(h_dir), /*flags*/0); + au_set_h_dptr(parent, bdst, h_parent); + AuDebugOn(!pin_orig); + cpg->pin = pin_orig; + } + iput(h_dir); + dput(parent); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* + * generic routine for both of copy-up and copy-down. + */ +/* cf. revalidate function in file.c */ +int au_cp_dirs(struct dentry *dentry, aufs_bindex_t bdst, + int (*cp)(struct dentry *dentry, aufs_bindex_t bdst, + struct au_pin *pin, + struct dentry *h_parent, void *arg), + void *arg) +{ + int err; + struct au_pin pin; + struct dentry *d, *parent, *h_parent, *real_parent, *h_dentry; + + err = 0; + parent = dget_parent(dentry); + if (IS_ROOT(parent)) + goto out; + + au_pin_init(&pin, dentry, bdst, AuLsc_DI_PARENT2, AuLsc_I_PARENT2, + au_opt_udba(dentry->d_sb), AuPin_MNT_WRITE); + + /* do not use au_dpage */ + real_parent = parent; + while (1) { + dput(parent); + parent = dget_parent(dentry); + h_parent = au_h_dptr(parent, bdst); + if (h_parent) + goto out; /* success */ + + /* find top dir which is necessary to cpup */ + do { + d = parent; + dput(parent); + parent = dget_parent(d); + di_read_lock_parent3(parent, !AuLock_IR); + h_parent = au_h_dptr(parent, bdst); + di_read_unlock(parent, !AuLock_IR); + } while (!h_parent); + + if (d != real_parent) + di_write_lock_child3(d); + + /* somebody else might create while we were sleeping */ + h_dentry = au_h_dptr(d, bdst); + if (!h_dentry || d_is_negative(h_dentry)) { + if (h_dentry) + au_update_dbtop(d); + + au_pin_set_dentry(&pin, d); + err = au_do_pin(&pin); + if (!err) { + err = cp(d, bdst, &pin, h_parent, arg); + au_unpin(&pin); + } + } + + if (d != real_parent) + di_write_unlock(d); + if (unlikely(err)) + break; + } + +out: + dput(parent); + return err; +} + +static int au_cpup_dir(struct dentry *dentry, aufs_bindex_t bdst, + struct au_pin *pin, + struct dentry *h_parent __maybe_unused, + void *arg __maybe_unused) +{ + struct au_cp_generic cpg = { + .dentry = dentry, + .bdst = bdst, + .bsrc = -1, + .len = 0, + .pin = pin, + .flags = AuCpup_DTIME + }; + return au_sio_cpup_simple(&cpg); +} + +int au_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst) +{ + return au_cp_dirs(dentry, bdst, au_cpup_dir, NULL); +} + +int au_test_and_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst) +{ + int err; + struct dentry *parent; + struct inode *dir; + + parent = dget_parent(dentry); + dir = d_inode(parent); + err = 0; + if (au_h_iptr(dir, bdst)) + goto out; + + di_read_unlock(parent, AuLock_IR); + di_write_lock_parent(parent); + /* someone else might change our inode while we were sleeping */ + if (!au_h_iptr(dir, bdst)) + err = au_cpup_dirs(dentry, bdst); + di_downgrade_lock(parent, AuLock_IR); + +out: + dput(parent); + return err; +} diff --git a/include/fs/aufs/cpup.h b/include/fs/aufs/cpup.h new file mode 100644 index 00000000000..99295266c4a --- /dev/null +++ b/include/fs/aufs/cpup.h @@ -0,0 +1,99 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * copy-up/down functions + */ + +#ifndef __AUFS_CPUP_H__ +#define __AUFS_CPUP_H__ + +#ifdef __KERNEL__ + +#include + +struct inode; +struct file; +struct au_pin; + +void au_cpup_attr_flags(struct inode *dst, unsigned int iflags); +void au_cpup_attr_timesizes(struct inode *inode); +void au_cpup_attr_nlink(struct inode *inode, int force); +void au_cpup_attr_changeable(struct inode *inode); +void au_cpup_igen(struct inode *inode, struct inode *h_inode); +void au_cpup_attr_all(struct inode *inode, int force); + +/* ---------------------------------------------------------------------- */ + +struct au_cp_generic { + struct dentry *dentry; + aufs_bindex_t bdst, bsrc; + loff_t len; + struct au_pin *pin; + unsigned int flags; +}; + +/* cpup flags */ +#define AuCpup_DTIME 1 /* do dtime_store/revert */ +#define AuCpup_KEEPLINO (1 << 1) /* do not clear the lower xino, + for link(2) */ +#define AuCpup_RENAME (1 << 2) /* rename after cpup */ +#define AuCpup_HOPEN (1 << 3) /* call h_open_pre/post() in + cpup */ +#define AuCpup_OVERWRITE (1 << 4) /* allow overwriting the + existing entry */ +#define AuCpup_RWDST (1 << 5) /* force write target even if + the branch is marked as RO */ + +#ifndef CONFIG_AUFS_BR_HFSPLUS +#undef AuCpup_HOPEN +#define AuCpup_HOPEN 0 +#endif + +#define au_ftest_cpup(flags, name) ((flags) & AuCpup_##name) +#define au_fset_cpup(flags, name) \ + do { (flags) |= AuCpup_##name; } while (0) +#define au_fclr_cpup(flags, name) \ + do { (flags) &= ~AuCpup_##name; } while (0) + +int au_copy_file(struct file *dst, struct file *src, loff_t len); +int au_sio_cpup_simple(struct au_cp_generic *cpg); +int au_sio_cpdown_simple(struct au_cp_generic *cpg); +int au_sio_cpup_wh(struct au_cp_generic *cpg, struct file *file); + +int au_cp_dirs(struct dentry *dentry, aufs_bindex_t bdst, + int (*cp)(struct dentry *dentry, aufs_bindex_t bdst, + struct au_pin *pin, + struct dentry *h_parent, void *arg), + void *arg); +int au_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst); +int au_test_and_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst); + +/* ---------------------------------------------------------------------- */ + +/* keep timestamps when copyup */ +struct au_dtime { + struct dentry *dt_dentry; + struct path dt_h_path; + struct timespec dt_atime, dt_mtime; +}; +void au_dtime_store(struct au_dtime *dt, struct dentry *dentry, + struct path *h_path); +void au_dtime_revert(struct au_dtime *dt); + +#endif /* __KERNEL__ */ +#endif /* __AUFS_CPUP_H__ */ diff --git a/include/fs/aufs/dbgaufs.c b/include/fs/aufs/dbgaufs.c new file mode 100644 index 00000000000..b85f0694b7f --- /dev/null +++ b/include/fs/aufs/dbgaufs.c @@ -0,0 +1,437 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * debugfs interface + */ + +#include +#include "aufs.h" + +#ifndef CONFIG_SYSFS +#error DEBUG_FS depends upon SYSFS +#endif + +static struct dentry *dbgaufs; +static const mode_t dbgaufs_mode = S_IRUSR | S_IRGRP | S_IROTH; + +/* 20 is max digits length of ulong 64 */ +struct dbgaufs_arg { + int n; + char a[20 * 4]; +}; + +/* + * common function for all XINO files + */ +static int dbgaufs_xi_release(struct inode *inode __maybe_unused, + struct file *file) +{ + kfree(file->private_data); + return 0; +} + +static int dbgaufs_xi_open(struct file *xf, struct file *file, int do_fcnt) +{ + int err; + struct kstat st; + struct dbgaufs_arg *p; + + err = -ENOMEM; + p = kmalloc(sizeof(*p), GFP_NOFS); + if (unlikely(!p)) + goto out; + + err = 0; + p->n = 0; + file->private_data = p; + if (!xf) + goto out; + + err = vfsub_getattr(&xf->f_path, &st); + if (!err) { + if (do_fcnt) + p->n = snprintf + (p->a, sizeof(p->a), "%ld, %llux%u %lld\n", + (long)file_count(xf), st.blocks, st.blksize, + (long long)st.size); + else + p->n = snprintf(p->a, sizeof(p->a), "%llux%u %lld\n", + st.blocks, st.blksize, + (long long)st.size); + AuDebugOn(p->n >= sizeof(p->a)); + } else { + p->n = snprintf(p->a, sizeof(p->a), "err %d\n", err); + err = 0; + } + +out: + return err; + +} + +static ssize_t dbgaufs_xi_read(struct file *file, char __user *buf, + size_t count, loff_t *ppos) +{ + struct dbgaufs_arg *p; + + p = file->private_data; + return simple_read_from_buffer(buf, count, ppos, p->a, p->n); +} + +/* ---------------------------------------------------------------------- */ + +struct dbgaufs_plink_arg { + int n; + char a[]; +}; + +static int dbgaufs_plink_release(struct inode *inode __maybe_unused, + struct file *file) +{ + free_page((unsigned long)file->private_data); + return 0; +} + +static int dbgaufs_plink_open(struct inode *inode, struct file *file) +{ + int err, i, limit; + unsigned long n, sum; + struct dbgaufs_plink_arg *p; + struct au_sbinfo *sbinfo; + struct super_block *sb; + struct hlist_bl_head *hbl; + + err = -ENOMEM; + p = (void *)get_zeroed_page(GFP_NOFS); + if (unlikely(!p)) + goto out; + + err = -EFBIG; + sbinfo = inode->i_private; + sb = sbinfo->si_sb; + si_noflush_read_lock(sb); + if (au_opt_test(au_mntflags(sb), PLINK)) { + limit = PAGE_SIZE - sizeof(p->n); + + /* the number of buckets */ + n = snprintf(p->a + p->n, limit, "%d\n", AuPlink_NHASH); + p->n += n; + limit -= n; + + sum = 0; + for (i = 0, hbl = sbinfo->si_plink; i < AuPlink_NHASH; + i++, hbl++) { + n = au_hbl_count(hbl); + sum += n; + + n = snprintf(p->a + p->n, limit, "%lu ", n); + p->n += n; + limit -= n; + if (unlikely(limit <= 0)) + goto out_free; + } + p->a[p->n - 1] = '\n'; + + /* the sum of plinks */ + n = snprintf(p->a + p->n, limit, "%lu\n", sum); + p->n += n; + limit -= n; + if (unlikely(limit <= 0)) + goto out_free; + } else { +#define str "1\n0\n0\n" + p->n = sizeof(str) - 1; + strcpy(p->a, str); +#undef str + } + si_read_unlock(sb); + + err = 0; + file->private_data = p; + goto out; /* success */ + +out_free: + free_page((unsigned long)p); +out: + return err; +} + +static ssize_t dbgaufs_plink_read(struct file *file, char __user *buf, + size_t count, loff_t *ppos) +{ + struct dbgaufs_plink_arg *p; + + p = file->private_data; + return simple_read_from_buffer(buf, count, ppos, p->a, p->n); +} + +static const struct file_operations dbgaufs_plink_fop = { + .owner = THIS_MODULE, + .open = dbgaufs_plink_open, + .release = dbgaufs_plink_release, + .read = dbgaufs_plink_read +}; + +/* ---------------------------------------------------------------------- */ + +static int dbgaufs_xib_open(struct inode *inode, struct file *file) +{ + int err; + struct au_sbinfo *sbinfo; + struct super_block *sb; + + sbinfo = inode->i_private; + sb = sbinfo->si_sb; + si_noflush_read_lock(sb); + err = dbgaufs_xi_open(sbinfo->si_xib, file, /*do_fcnt*/0); + si_read_unlock(sb); + return err; +} + +static const struct file_operations dbgaufs_xib_fop = { + .owner = THIS_MODULE, + .open = dbgaufs_xib_open, + .release = dbgaufs_xi_release, + .read = dbgaufs_xi_read +}; + +/* ---------------------------------------------------------------------- */ + +#define DbgaufsXi_PREFIX "xi" + +static int dbgaufs_xino_open(struct inode *inode, struct file *file) +{ + int err; + long l; + struct au_sbinfo *sbinfo; + struct super_block *sb; + struct file *xf; + struct qstr *name; + + err = -ENOENT; + xf = NULL; + name = &file->f_path.dentry->d_name; + if (unlikely(name->len < sizeof(DbgaufsXi_PREFIX) + || memcmp(name->name, DbgaufsXi_PREFIX, + sizeof(DbgaufsXi_PREFIX) - 1))) + goto out; + err = kstrtol(name->name + sizeof(DbgaufsXi_PREFIX) - 1, 10, &l); + if (unlikely(err)) + goto out; + + sbinfo = inode->i_private; + sb = sbinfo->si_sb; + si_noflush_read_lock(sb); + if (l <= au_sbbot(sb)) { + xf = au_sbr(sb, (aufs_bindex_t)l)->br_xino.xi_file; + err = dbgaufs_xi_open(xf, file, /*do_fcnt*/1); + } else + err = -ENOENT; + si_read_unlock(sb); + +out: + return err; +} + +static const struct file_operations dbgaufs_xino_fop = { + .owner = THIS_MODULE, + .open = dbgaufs_xino_open, + .release = dbgaufs_xi_release, + .read = dbgaufs_xi_read +}; + +void dbgaufs_brs_del(struct super_block *sb, aufs_bindex_t bindex) +{ + aufs_bindex_t bbot; + struct au_branch *br; + struct au_xino_file *xi; + + if (!au_sbi(sb)->si_dbgaufs) + return; + + bbot = au_sbbot(sb); + for (; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + xi = &br->br_xino; + /* debugfs acquires the parent i_mutex */ + lockdep_off(); + debugfs_remove(xi->xi_dbgaufs); + lockdep_on(); + xi->xi_dbgaufs = NULL; + } +} + +void dbgaufs_brs_add(struct super_block *sb, aufs_bindex_t bindex) +{ + struct au_sbinfo *sbinfo; + struct dentry *parent; + struct au_branch *br; + struct au_xino_file *xi; + aufs_bindex_t bbot; + char name[sizeof(DbgaufsXi_PREFIX) + 5]; /* "xi" bindex NULL */ + + sbinfo = au_sbi(sb); + parent = sbinfo->si_dbgaufs; + if (!parent) + return; + + bbot = au_sbbot(sb); + for (; bindex <= bbot; bindex++) { + snprintf(name, sizeof(name), DbgaufsXi_PREFIX "%d", bindex); + br = au_sbr(sb, bindex); + xi = &br->br_xino; + AuDebugOn(xi->xi_dbgaufs); + /* debugfs acquires the parent i_mutex */ + lockdep_off(); + xi->xi_dbgaufs = debugfs_create_file(name, dbgaufs_mode, parent, + sbinfo, &dbgaufs_xino_fop); + lockdep_on(); + /* ignore an error */ + if (unlikely(!xi->xi_dbgaufs)) + AuWarn1("failed %s under debugfs\n", name); + } +} + +/* ---------------------------------------------------------------------- */ + +#ifdef CONFIG_AUFS_EXPORT +static int dbgaufs_xigen_open(struct inode *inode, struct file *file) +{ + int err; + struct au_sbinfo *sbinfo; + struct super_block *sb; + + sbinfo = inode->i_private; + sb = sbinfo->si_sb; + si_noflush_read_lock(sb); + err = dbgaufs_xi_open(sbinfo->si_xigen, file, /*do_fcnt*/0); + si_read_unlock(sb); + return err; +} + +static const struct file_operations dbgaufs_xigen_fop = { + .owner = THIS_MODULE, + .open = dbgaufs_xigen_open, + .release = dbgaufs_xi_release, + .read = dbgaufs_xi_read +}; + +static int dbgaufs_xigen_init(struct au_sbinfo *sbinfo) +{ + int err; + + /* + * This function is a dynamic '__init' function actually, + * so the tiny check for si_rwsem is unnecessary. + */ + /* AuRwMustWriteLock(&sbinfo->si_rwsem); */ + + err = -EIO; + sbinfo->si_dbgaufs_xigen = debugfs_create_file + ("xigen", dbgaufs_mode, sbinfo->si_dbgaufs, sbinfo, + &dbgaufs_xigen_fop); + if (sbinfo->si_dbgaufs_xigen) + err = 0; + + return err; +} +#else +static int dbgaufs_xigen_init(struct au_sbinfo *sbinfo) +{ + return 0; +} +#endif /* CONFIG_AUFS_EXPORT */ + +/* ---------------------------------------------------------------------- */ + +void dbgaufs_si_fin(struct au_sbinfo *sbinfo) +{ + /* + * This function is a dynamic '__fin' function actually, + * so the tiny check for si_rwsem is unnecessary. + */ + /* AuRwMustWriteLock(&sbinfo->si_rwsem); */ + + debugfs_remove_recursive(sbinfo->si_dbgaufs); + sbinfo->si_dbgaufs = NULL; + kobject_put(&sbinfo->si_kobj); +} + +int dbgaufs_si_init(struct au_sbinfo *sbinfo) +{ + int err; + char name[SysaufsSiNameLen]; + + /* + * This function is a dynamic '__init' function actually, + * so the tiny check for si_rwsem is unnecessary. + */ + /* AuRwMustWriteLock(&sbinfo->si_rwsem); */ + + err = -ENOENT; + if (!dbgaufs) { + AuErr1("/debug/aufs is uninitialized\n"); + goto out; + } + + err = -EIO; + sysaufs_name(sbinfo, name); + sbinfo->si_dbgaufs = debugfs_create_dir(name, dbgaufs); + if (unlikely(!sbinfo->si_dbgaufs)) + goto out; + kobject_get(&sbinfo->si_kobj); + + sbinfo->si_dbgaufs_xib = debugfs_create_file + ("xib", dbgaufs_mode, sbinfo->si_dbgaufs, sbinfo, + &dbgaufs_xib_fop); + if (unlikely(!sbinfo->si_dbgaufs_xib)) + goto out_dir; + + sbinfo->si_dbgaufs_plink = debugfs_create_file + ("plink", dbgaufs_mode, sbinfo->si_dbgaufs, sbinfo, + &dbgaufs_plink_fop); + if (unlikely(!sbinfo->si_dbgaufs_plink)) + goto out_dir; + + err = dbgaufs_xigen_init(sbinfo); + if (!err) + goto out; /* success */ + +out_dir: + dbgaufs_si_fin(sbinfo); +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +void dbgaufs_fin(void) +{ + debugfs_remove(dbgaufs); +} + +int __init dbgaufs_init(void) +{ + int err; + + err = -EIO; + dbgaufs = debugfs_create_dir(AUFS_NAME, NULL); + if (dbgaufs) + err = 0; + return err; +} diff --git a/include/fs/aufs/dbgaufs.h b/include/fs/aufs/dbgaufs.h new file mode 100644 index 00000000000..f8d7b74e8d6 --- /dev/null +++ b/include/fs/aufs/dbgaufs.h @@ -0,0 +1,48 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * debugfs interface + */ + +#ifndef __DBGAUFS_H__ +#define __DBGAUFS_H__ + +#ifdef __KERNEL__ + +struct super_block; +struct au_sbinfo; + +#ifdef CONFIG_DEBUG_FS +/* dbgaufs.c */ +void dbgaufs_brs_del(struct super_block *sb, aufs_bindex_t bindex); +void dbgaufs_brs_add(struct super_block *sb, aufs_bindex_t bindex); +void dbgaufs_si_fin(struct au_sbinfo *sbinfo); +int dbgaufs_si_init(struct au_sbinfo *sbinfo); +void dbgaufs_fin(void); +int __init dbgaufs_init(void); +#else +AuStubVoid(dbgaufs_brs_del, struct super_block *sb, aufs_bindex_t bindex) +AuStubVoid(dbgaufs_brs_add, struct super_block *sb, aufs_bindex_t bindex) +AuStubVoid(dbgaufs_si_fin, struct au_sbinfo *sbinfo) +AuStubInt0(dbgaufs_si_init, struct au_sbinfo *sbinfo) +AuStubVoid(dbgaufs_fin, void) +AuStubInt0(__init dbgaufs_init, void) +#endif /* CONFIG_DEBUG_FS */ + +#endif /* __KERNEL__ */ +#endif /* __DBGAUFS_H__ */ diff --git a/include/fs/aufs/dcsub.c b/include/fs/aufs/dcsub.c new file mode 100644 index 00000000000..61c1a255378 --- /dev/null +++ b/include/fs/aufs/dcsub.c @@ -0,0 +1,225 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * sub-routines for dentry cache + */ + +#include "aufs.h" + +static void au_dpage_free(struct au_dpage *dpage) +{ + int i; + struct dentry **p; + + p = dpage->dentries; + for (i = 0; i < dpage->ndentry; i++) + dput(*p++); + free_page((unsigned long)dpage->dentries); +} + +int au_dpages_init(struct au_dcsub_pages *dpages, gfp_t gfp) +{ + int err; + void *p; + + err = -ENOMEM; + dpages->dpages = kmalloc(sizeof(*dpages->dpages), gfp); + if (unlikely(!dpages->dpages)) + goto out; + + p = (void *)__get_free_page(gfp); + if (unlikely(!p)) + goto out_dpages; + + dpages->dpages[0].ndentry = 0; + dpages->dpages[0].dentries = p; + dpages->ndpage = 1; + return 0; /* success */ + +out_dpages: + kfree(dpages->dpages); +out: + return err; +} + +void au_dpages_free(struct au_dcsub_pages *dpages) +{ + int i; + struct au_dpage *p; + + p = dpages->dpages; + for (i = 0; i < dpages->ndpage; i++) + au_dpage_free(p++); + kfree(dpages->dpages); +} + +static int au_dpages_append(struct au_dcsub_pages *dpages, + struct dentry *dentry, gfp_t gfp) +{ + int err, sz; + struct au_dpage *dpage; + void *p; + + dpage = dpages->dpages + dpages->ndpage - 1; + sz = PAGE_SIZE / sizeof(dentry); + if (unlikely(dpage->ndentry >= sz)) { + AuLabel(new dpage); + err = -ENOMEM; + sz = dpages->ndpage * sizeof(*dpages->dpages); + p = au_kzrealloc(dpages->dpages, sz, + sz + sizeof(*dpages->dpages), gfp, + /*may_shrink*/0); + if (unlikely(!p)) + goto out; + + dpages->dpages = p; + dpage = dpages->dpages + dpages->ndpage; + p = (void *)__get_free_page(gfp); + if (unlikely(!p)) + goto out; + + dpage->ndentry = 0; + dpage->dentries = p; + dpages->ndpage++; + } + + AuDebugOn(au_dcount(dentry) <= 0); + dpage->dentries[dpage->ndentry++] = dget_dlock(dentry); + return 0; /* success */ + +out: + return err; +} + +/* todo: BAD approach */ +/* copied from linux/fs/dcache.c */ +enum d_walk_ret { + D_WALK_CONTINUE, + D_WALK_QUIT, + D_WALK_NORETRY, + D_WALK_SKIP, +}; + +extern void d_walk(struct dentry *parent, void *data, + enum d_walk_ret (*enter)(void *, struct dentry *), + void (*finish)(void *)); + +struct ac_dpages_arg { + int err; + struct au_dcsub_pages *dpages; + struct super_block *sb; + au_dpages_test test; + void *arg; +}; + +static enum d_walk_ret au_call_dpages_append(void *_arg, struct dentry *dentry) +{ + enum d_walk_ret ret; + struct ac_dpages_arg *arg = _arg; + + ret = D_WALK_CONTINUE; + if (dentry->d_sb == arg->sb + && !IS_ROOT(dentry) + && au_dcount(dentry) > 0 + && au_di(dentry) + && (!arg->test || arg->test(dentry, arg->arg))) { + arg->err = au_dpages_append(arg->dpages, dentry, GFP_ATOMIC); + if (unlikely(arg->err)) + ret = D_WALK_QUIT; + } + + return ret; +} + +int au_dcsub_pages(struct au_dcsub_pages *dpages, struct dentry *root, + au_dpages_test test, void *arg) +{ + struct ac_dpages_arg args = { + .err = 0, + .dpages = dpages, + .sb = root->d_sb, + .test = test, + .arg = arg + }; + + d_walk(root, &args, au_call_dpages_append, NULL); + + return args.err; +} + +int au_dcsub_pages_rev(struct au_dcsub_pages *dpages, struct dentry *dentry, + int do_include, au_dpages_test test, void *arg) +{ + int err; + + err = 0; + write_seqlock(&rename_lock); + spin_lock(&dentry->d_lock); + if (do_include + && au_dcount(dentry) > 0 + && (!test || test(dentry, arg))) + err = au_dpages_append(dpages, dentry, GFP_ATOMIC); + spin_unlock(&dentry->d_lock); + if (unlikely(err)) + goto out; + + /* + * RCU for vfsmount is unnecessary since this is a traverse in a single + * mount + */ + while (!IS_ROOT(dentry)) { + dentry = dentry->d_parent; /* rename_lock is locked */ + spin_lock(&dentry->d_lock); + if (au_dcount(dentry) > 0 + && (!test || test(dentry, arg))) + err = au_dpages_append(dpages, dentry, GFP_ATOMIC); + spin_unlock(&dentry->d_lock); + if (unlikely(err)) + break; + } + +out: + write_sequnlock(&rename_lock); + return err; +} + +static inline int au_dcsub_dpages_aufs(struct dentry *dentry, void *arg) +{ + return au_di(dentry) && dentry->d_sb == arg; +} + +int au_dcsub_pages_rev_aufs(struct au_dcsub_pages *dpages, + struct dentry *dentry, int do_include) +{ + return au_dcsub_pages_rev(dpages, dentry, do_include, + au_dcsub_dpages_aufs, dentry->d_sb); +} + +int au_test_subdir(struct dentry *d1, struct dentry *d2) +{ + struct path path[2] = { + { + .dentry = d1 + }, + { + .dentry = d2 + } + }; + + return path_is_under(path + 0, path + 1); +} diff --git a/include/fs/aufs/dcsub.h b/include/fs/aufs/dcsub.h new file mode 100644 index 00000000000..50e81bf68a5 --- /dev/null +++ b/include/fs/aufs/dcsub.h @@ -0,0 +1,136 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * sub-routines for dentry cache + */ + +#ifndef __AUFS_DCSUB_H__ +#define __AUFS_DCSUB_H__ + +#ifdef __KERNEL__ + +#include +#include + +struct au_dpage { + int ndentry; + struct dentry **dentries; +}; + +struct au_dcsub_pages { + int ndpage; + struct au_dpage *dpages; +}; + +/* ---------------------------------------------------------------------- */ + +/* dcsub.c */ +int au_dpages_init(struct au_dcsub_pages *dpages, gfp_t gfp); +void au_dpages_free(struct au_dcsub_pages *dpages); +typedef int (*au_dpages_test)(struct dentry *dentry, void *arg); +int au_dcsub_pages(struct au_dcsub_pages *dpages, struct dentry *root, + au_dpages_test test, void *arg); +int au_dcsub_pages_rev(struct au_dcsub_pages *dpages, struct dentry *dentry, + int do_include, au_dpages_test test, void *arg); +int au_dcsub_pages_rev_aufs(struct au_dcsub_pages *dpages, + struct dentry *dentry, int do_include); +int au_test_subdir(struct dentry *d1, struct dentry *d2); + +/* ---------------------------------------------------------------------- */ + +/* + * todo: in linux-3.13, several similar (but faster) helpers are added to + * include/linux/dcache.h. Try them (in the future). + */ + +static inline int au_d_hashed_positive(struct dentry *d) +{ + int err; + struct inode *inode = d_inode(d); + + err = 0; + if (unlikely(d_unhashed(d) + || d_is_negative(d) + || !inode->i_nlink)) + err = -ENOENT; + return err; +} + +static inline int au_d_linkable(struct dentry *d) +{ + int err; + struct inode *inode = d_inode(d); + + err = au_d_hashed_positive(d); + if (err + && d_is_positive(d) + && (inode->i_state & I_LINKABLE)) + err = 0; + return err; +} + +static inline int au_d_alive(struct dentry *d) +{ + int err; + struct inode *inode; + + err = 0; + if (!IS_ROOT(d)) + err = au_d_hashed_positive(d); + else { + inode = d_inode(d); + if (unlikely(d_unlinked(d) + || d_is_negative(d) + || !inode->i_nlink)) + err = -ENOENT; + } + return err; +} + +static inline int au_alive_dir(struct dentry *d) +{ + int err; + + err = au_d_alive(d); + if (unlikely(err || IS_DEADDIR(d_inode(d)))) + err = -ENOENT; + return err; +} + +static inline int au_qstreq(struct qstr *a, struct qstr *b) +{ + return a->len == b->len + && !memcmp(a->name, b->name, a->len); +} + +/* + * by the commit + * 360f547 2015-01-25 dcache: let the dentry count go down to zero without + * taking d_lock + * the type of d_lockref.count became int, but the inlined function d_count() + * still returns unsigned int. + * I don't know why. Maybe it is for every d_count() users? + * Anyway au_dcount() lives on. + */ +static inline int au_dcount(struct dentry *d) +{ + return (int)d_count(d); +} + +#endif /* __KERNEL__ */ +#endif /* __AUFS_DCSUB_H__ */ diff --git a/include/fs/aufs/debug.c b/include/fs/aufs/debug.c new file mode 100644 index 00000000000..87a1d2283a4 --- /dev/null +++ b/include/fs/aufs/debug.c @@ -0,0 +1,440 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * debug print functions + */ + +#include "aufs.h" + +/* Returns 0, or -errno. arg is in kp->arg. */ +static int param_atomic_t_set(const char *val, const struct kernel_param *kp) +{ + int err, n; + + err = kstrtoint(val, 0, &n); + if (!err) { + if (n > 0) + au_debug_on(); + else + au_debug_off(); + } + return err; +} + +/* Returns length written or -errno. Buffer is 4k (ie. be short!) */ +static int param_atomic_t_get(char *buffer, const struct kernel_param *kp) +{ + atomic_t *a; + + a = kp->arg; + return sprintf(buffer, "%d", atomic_read(a)); +} + +static struct kernel_param_ops param_ops_atomic_t = { + .set = param_atomic_t_set, + .get = param_atomic_t_get + /* void (*free)(void *arg) */ +}; + +atomic_t aufs_debug = ATOMIC_INIT(0); +MODULE_PARM_DESC(debug, "debug print"); +module_param_named(debug, aufs_debug, atomic_t, S_IRUGO | S_IWUSR | S_IWGRP); + +DEFINE_MUTEX(au_dbg_mtx); /* just to serialize the dbg msgs */ +char *au_plevel = KERN_DEBUG; +#define dpri(fmt, ...) do { \ + if ((au_plevel \ + && strcmp(au_plevel, KERN_DEBUG)) \ + || au_debug_test()) \ + printk("%s" fmt, au_plevel, ##__VA_ARGS__); \ +} while (0) + +/* ---------------------------------------------------------------------- */ + +void au_dpri_whlist(struct au_nhash *whlist) +{ + unsigned long ul, n; + struct hlist_head *head; + struct au_vdir_wh *pos; + + n = whlist->nh_num; + head = whlist->nh_head; + for (ul = 0; ul < n; ul++) { + hlist_for_each_entry(pos, head, wh_hash) + dpri("b%d, %.*s, %d\n", + pos->wh_bindex, + pos->wh_str.len, pos->wh_str.name, + pos->wh_str.len); + head++; + } +} + +void au_dpri_vdir(struct au_vdir *vdir) +{ + unsigned long ul; + union au_vdir_deblk_p p; + unsigned char *o; + + if (!vdir || IS_ERR(vdir)) { + dpri("err %ld\n", PTR_ERR(vdir)); + return; + } + + dpri("deblk %u, nblk %lu, deblk %p, last{%lu, %p}, ver %lu\n", + vdir->vd_deblk_sz, vdir->vd_nblk, vdir->vd_deblk, + vdir->vd_last.ul, vdir->vd_last.p.deblk, vdir->vd_version); + for (ul = 0; ul < vdir->vd_nblk; ul++) { + p.deblk = vdir->vd_deblk[ul]; + o = p.deblk; + dpri("[%lu]: %p\n", ul, o); + } +} + +static int do_pri_inode(aufs_bindex_t bindex, struct inode *inode, int hn, + struct dentry *wh) +{ + char *n = NULL; + int l = 0; + + if (!inode || IS_ERR(inode)) { + dpri("i%d: err %ld\n", bindex, PTR_ERR(inode)); + return -1; + } + + /* the type of i_blocks depends upon CONFIG_LBDAF */ + BUILD_BUG_ON(sizeof(inode->i_blocks) != sizeof(unsigned long) + && sizeof(inode->i_blocks) != sizeof(u64)); + if (wh) { + n = (void *)wh->d_name.name; + l = wh->d_name.len; + } + + dpri("i%d: %p, i%lu, %s, cnt %d, nl %u, 0%o, sz %llu, blk %llu," + " hn %d, ct %lld, np %lu, st 0x%lx, f 0x%x, v %llu, g %x%s%.*s\n", + bindex, inode, + inode->i_ino, inode->i_sb ? au_sbtype(inode->i_sb) : "??", + atomic_read(&inode->i_count), inode->i_nlink, inode->i_mode, + i_size_read(inode), (unsigned long long)inode->i_blocks, + hn, (long long)timespec_to_ns(&inode->i_ctime) & 0x0ffff, + inode->i_mapping ? inode->i_mapping->nrpages : 0, + inode->i_state, inode->i_flags, inode->i_version, + inode->i_generation, + l ? ", wh " : "", l, n); + return 0; +} + +void au_dpri_inode(struct inode *inode) +{ + struct au_iinfo *iinfo; + struct au_hinode *hi; + aufs_bindex_t bindex; + int err, hn; + + err = do_pri_inode(-1, inode, -1, NULL); + if (err || !au_test_aufs(inode->i_sb) || au_is_bad_inode(inode)) + return; + + iinfo = au_ii(inode); + dpri("i-1: btop %d, bbot %d, gen %d\n", + iinfo->ii_btop, iinfo->ii_bbot, au_iigen(inode, NULL)); + if (iinfo->ii_btop < 0) + return; + hn = 0; + for (bindex = iinfo->ii_btop; bindex <= iinfo->ii_bbot; bindex++) { + hi = au_hinode(iinfo, bindex); + hn = !!au_hn(hi); + do_pri_inode(bindex, hi->hi_inode, hn, hi->hi_whdentry); + } +} + +void au_dpri_dalias(struct inode *inode) +{ + struct dentry *d; + + spin_lock(&inode->i_lock); + hlist_for_each_entry(d, &inode->i_dentry, d_u.d_alias) + au_dpri_dentry(d); + spin_unlock(&inode->i_lock); +} + +static int do_pri_dentry(aufs_bindex_t bindex, struct dentry *dentry) +{ + struct dentry *wh = NULL; + int hn; + struct inode *inode; + struct au_iinfo *iinfo; + struct au_hinode *hi; + + if (!dentry || IS_ERR(dentry)) { + dpri("d%d: err %ld\n", bindex, PTR_ERR(dentry)); + return -1; + } + /* do not call dget_parent() here */ + /* note: access d_xxx without d_lock */ + dpri("d%d: %p, %pd2?, %s, cnt %d, flags 0x%x, %shashed\n", + bindex, dentry, dentry, + dentry->d_sb ? au_sbtype(dentry->d_sb) : "??", + au_dcount(dentry), dentry->d_flags, + d_unhashed(dentry) ? "un" : ""); + hn = -1; + inode = NULL; + if (d_is_positive(dentry)) + inode = d_inode(dentry); + if (inode + && au_test_aufs(dentry->d_sb) + && bindex >= 0 + && !au_is_bad_inode(inode)) { + iinfo = au_ii(inode); + hi = au_hinode(iinfo, bindex); + hn = !!au_hn(hi); + wh = hi->hi_whdentry; + } + do_pri_inode(bindex, inode, hn, wh); + return 0; +} + +void au_dpri_dentry(struct dentry *dentry) +{ + struct au_dinfo *dinfo; + aufs_bindex_t bindex; + int err; + + err = do_pri_dentry(-1, dentry); + if (err || !au_test_aufs(dentry->d_sb)) + return; + + dinfo = au_di(dentry); + if (!dinfo) + return; + dpri("d-1: btop %d, bbot %d, bwh %d, bdiropq %d, gen %d, tmp %d\n", + dinfo->di_btop, dinfo->di_bbot, + dinfo->di_bwh, dinfo->di_bdiropq, au_digen(dentry), + dinfo->di_tmpfile); + if (dinfo->di_btop < 0) + return; + for (bindex = dinfo->di_btop; bindex <= dinfo->di_bbot; bindex++) + do_pri_dentry(bindex, au_hdentry(dinfo, bindex)->hd_dentry); +} + +static int do_pri_file(aufs_bindex_t bindex, struct file *file) +{ + char a[32]; + + if (!file || IS_ERR(file)) { + dpri("f%d: err %ld\n", bindex, PTR_ERR(file)); + return -1; + } + a[0] = 0; + if (bindex < 0 + && !IS_ERR_OR_NULL(file->f_path.dentry) + && au_test_aufs(file->f_path.dentry->d_sb) + && au_fi(file)) + snprintf(a, sizeof(a), ", gen %d, mmapped %d", + au_figen(file), atomic_read(&au_fi(file)->fi_mmapped)); + dpri("f%d: mode 0x%x, flags 0%o, cnt %ld, v %llu, pos %llu%s\n", + bindex, file->f_mode, file->f_flags, (long)file_count(file), + file->f_version, file->f_pos, a); + if (!IS_ERR_OR_NULL(file->f_path.dentry)) + do_pri_dentry(bindex, file->f_path.dentry); + return 0; +} + +void au_dpri_file(struct file *file) +{ + struct au_finfo *finfo; + struct au_fidir *fidir; + struct au_hfile *hfile; + aufs_bindex_t bindex; + int err; + + err = do_pri_file(-1, file); + if (err + || IS_ERR_OR_NULL(file->f_path.dentry) + || !au_test_aufs(file->f_path.dentry->d_sb)) + return; + + finfo = au_fi(file); + if (!finfo) + return; + if (finfo->fi_btop < 0) + return; + fidir = finfo->fi_hdir; + if (!fidir) + do_pri_file(finfo->fi_btop, finfo->fi_htop.hf_file); + else + for (bindex = finfo->fi_btop; + bindex >= 0 && bindex <= fidir->fd_bbot; + bindex++) { + hfile = fidir->fd_hfile + bindex; + do_pri_file(bindex, hfile ? hfile->hf_file : NULL); + } +} + +static int do_pri_br(aufs_bindex_t bindex, struct au_branch *br) +{ + struct vfsmount *mnt; + struct super_block *sb; + + if (!br || IS_ERR(br)) + goto out; + mnt = au_br_mnt(br); + if (!mnt || IS_ERR(mnt)) + goto out; + sb = mnt->mnt_sb; + if (!sb || IS_ERR(sb)) + goto out; + + dpri("s%d: {perm 0x%x, id %d, cnt %lld, wbr %p}, " + "%s, dev 0x%02x%02x, flags 0x%lx, cnt %d, active %d, " + "xino %d\n", + bindex, br->br_perm, br->br_id, au_br_count(br), + br->br_wbr, au_sbtype(sb), MAJOR(sb->s_dev), MINOR(sb->s_dev), + sb->s_flags, sb->s_count, + atomic_read(&sb->s_active), !!br->br_xino.xi_file); + return 0; + +out: + dpri("s%d: err %ld\n", bindex, PTR_ERR(br)); + return -1; +} + +void au_dpri_sb(struct super_block *sb) +{ + struct au_sbinfo *sbinfo; + aufs_bindex_t bindex; + int err; + /* to reuduce stack size */ + struct { + struct vfsmount mnt; + struct au_branch fake; + } *a; + + /* this function can be called from magic sysrq */ + a = kzalloc(sizeof(*a), GFP_ATOMIC); + if (unlikely(!a)) { + dpri("no memory\n"); + return; + } + + a->mnt.mnt_sb = sb; + a->fake.br_path.mnt = &a->mnt; + au_br_count_init(&a->fake); + err = do_pri_br(-1, &a->fake); + au_br_count_fin(&a->fake); + kfree(a); + dpri("dev 0x%x\n", sb->s_dev); + if (err || !au_test_aufs(sb)) + return; + + sbinfo = au_sbi(sb); + if (!sbinfo) + return; + dpri("nw %d, gen %u, kobj %d\n", + atomic_read(&sbinfo->si_nowait.nw_len), sbinfo->si_generation, + kref_read(&sbinfo->si_kobj.kref)); + for (bindex = 0; bindex <= sbinfo->si_bbot; bindex++) + do_pri_br(bindex, sbinfo->si_branch[0 + bindex]); +} + +/* ---------------------------------------------------------------------- */ + +void __au_dbg_verify_dinode(struct dentry *dentry, const char *func, int line) +{ + struct inode *h_inode, *inode = d_inode(dentry); + struct dentry *h_dentry; + aufs_bindex_t bindex, bbot, bi; + + if (!inode /* || au_di(dentry)->di_lsc == AuLsc_DI_TMP */) + return; + + bbot = au_dbbot(dentry); + bi = au_ibbot(inode); + if (bi < bbot) + bbot = bi; + bindex = au_dbtop(dentry); + bi = au_ibtop(inode); + if (bi > bindex) + bindex = bi; + + for (; bindex <= bbot; bindex++) { + h_dentry = au_h_dptr(dentry, bindex); + if (!h_dentry) + continue; + h_inode = au_h_iptr(inode, bindex); + if (unlikely(h_inode != d_inode(h_dentry))) { + au_debug_on(); + AuDbg("b%d, %s:%d\n", bindex, func, line); + AuDbgDentry(dentry); + AuDbgInode(inode); + au_debug_off(); + BUG(); + } + } +} + +void au_dbg_verify_gen(struct dentry *parent, unsigned int sigen) +{ + int err, i, j; + struct au_dcsub_pages dpages; + struct au_dpage *dpage; + struct dentry **dentries; + + err = au_dpages_init(&dpages, GFP_NOFS); + AuDebugOn(err); + err = au_dcsub_pages_rev_aufs(&dpages, parent, /*do_include*/1); + AuDebugOn(err); + for (i = dpages.ndpage - 1; !err && i >= 0; i--) { + dpage = dpages.dpages + i; + dentries = dpage->dentries; + for (j = dpage->ndentry - 1; !err && j >= 0; j--) + AuDebugOn(au_digen_test(dentries[j], sigen)); + } + au_dpages_free(&dpages); +} + +void au_dbg_verify_kthread(void) +{ + if (au_wkq_test()) { + au_dbg_blocked(); + /* + * It may be recursive, but udba=notify between two aufs mounts, + * where a single ro branch is shared, is not a problem. + */ + /* WARN_ON(1); */ + } +} + +/* ---------------------------------------------------------------------- */ + +int __init au_debug_init(void) +{ + aufs_bindex_t bindex; + struct au_vdir_destr destr; + + bindex = -1; + AuDebugOn(bindex >= 0); + + destr.len = -1; + AuDebugOn(destr.len < NAME_MAX); + +#ifdef CONFIG_4KSTACKS + pr_warn("CONFIG_4KSTACKS is defined.\n"); +#endif + + return 0; +} diff --git a/include/fs/aufs/debug.h b/include/fs/aufs/debug.h new file mode 100644 index 00000000000..c1325b139d1 --- /dev/null +++ b/include/fs/aufs/debug.h @@ -0,0 +1,225 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * debug print functions + */ + +#ifndef __AUFS_DEBUG_H__ +#define __AUFS_DEBUG_H__ + +#ifdef __KERNEL__ + +#include +#include +#include +#include + +#ifdef CONFIG_AUFS_DEBUG +#define AuDebugOn(a) BUG_ON(a) + +/* module parameter */ +extern atomic_t aufs_debug; +static inline void au_debug_on(void) +{ + atomic_inc(&aufs_debug); +} +static inline void au_debug_off(void) +{ + atomic_dec_if_positive(&aufs_debug); +} + +static inline int au_debug_test(void) +{ + return atomic_read(&aufs_debug) > 0; +} +#else +#define AuDebugOn(a) do {} while (0) +AuStubVoid(au_debug_on, void) +AuStubVoid(au_debug_off, void) +AuStubInt0(au_debug_test, void) +#endif /* CONFIG_AUFS_DEBUG */ + +#define param_check_atomic_t(name, p) __param_check(name, p, atomic_t) + +/* ---------------------------------------------------------------------- */ + +/* debug print */ + +#define AuDbg(fmt, ...) do { \ + if (au_debug_test()) \ + pr_debug("DEBUG: " fmt, ##__VA_ARGS__); \ +} while (0) +#define AuLabel(l) AuDbg(#l "\n") +#define AuIOErr(fmt, ...) pr_err("I/O Error, " fmt, ##__VA_ARGS__) +#define AuWarn1(fmt, ...) do { \ + static unsigned char _c; \ + if (!_c++) \ + pr_warn(fmt, ##__VA_ARGS__); \ +} while (0) + +#define AuErr1(fmt, ...) do { \ + static unsigned char _c; \ + if (!_c++) \ + pr_err(fmt, ##__VA_ARGS__); \ +} while (0) + +#define AuIOErr1(fmt, ...) do { \ + static unsigned char _c; \ + if (!_c++) \ + AuIOErr(fmt, ##__VA_ARGS__); \ +} while (0) + +#define AuUnsupportMsg "This operation is not supported." \ + " Please report this application to aufs-users ML." +#define AuUnsupport(fmt, ...) do { \ + pr_err(AuUnsupportMsg "\n" fmt, ##__VA_ARGS__); \ + dump_stack(); \ +} while (0) + +#define AuTraceErr(e) do { \ + if (unlikely((e) < 0)) \ + AuDbg("err %d\n", (int)(e)); \ +} while (0) + +#define AuTraceErrPtr(p) do { \ + if (IS_ERR(p)) \ + AuDbg("err %ld\n", PTR_ERR(p)); \ +} while (0) + +/* dirty macros for debug print, use with "%.*s" and caution */ +#define AuLNPair(qstr) (qstr)->len, (qstr)->name + +/* ---------------------------------------------------------------------- */ + +struct dentry; +#ifdef CONFIG_AUFS_DEBUG +extern struct mutex au_dbg_mtx; +extern char *au_plevel; +struct au_nhash; +void au_dpri_whlist(struct au_nhash *whlist); +struct au_vdir; +void au_dpri_vdir(struct au_vdir *vdir); +struct inode; +void au_dpri_inode(struct inode *inode); +void au_dpri_dalias(struct inode *inode); +void au_dpri_dentry(struct dentry *dentry); +struct file; +void au_dpri_file(struct file *filp); +struct super_block; +void au_dpri_sb(struct super_block *sb); + +#define au_dbg_verify_dinode(d) __au_dbg_verify_dinode(d, __func__, __LINE__) +void __au_dbg_verify_dinode(struct dentry *dentry, const char *func, int line); +void au_dbg_verify_gen(struct dentry *parent, unsigned int sigen); +void au_dbg_verify_kthread(void); + +int __init au_debug_init(void); + +#define AuDbgWhlist(w) do { \ + mutex_lock(&au_dbg_mtx); \ + AuDbg(#w "\n"); \ + au_dpri_whlist(w); \ + mutex_unlock(&au_dbg_mtx); \ +} while (0) + +#define AuDbgVdir(v) do { \ + mutex_lock(&au_dbg_mtx); \ + AuDbg(#v "\n"); \ + au_dpri_vdir(v); \ + mutex_unlock(&au_dbg_mtx); \ +} while (0) + +#define AuDbgInode(i) do { \ + mutex_lock(&au_dbg_mtx); \ + AuDbg(#i "\n"); \ + au_dpri_inode(i); \ + mutex_unlock(&au_dbg_mtx); \ +} while (0) + +#define AuDbgDAlias(i) do { \ + mutex_lock(&au_dbg_mtx); \ + AuDbg(#i "\n"); \ + au_dpri_dalias(i); \ + mutex_unlock(&au_dbg_mtx); \ +} while (0) + +#define AuDbgDentry(d) do { \ + mutex_lock(&au_dbg_mtx); \ + AuDbg(#d "\n"); \ + au_dpri_dentry(d); \ + mutex_unlock(&au_dbg_mtx); \ +} while (0) + +#define AuDbgFile(f) do { \ + mutex_lock(&au_dbg_mtx); \ + AuDbg(#f "\n"); \ + au_dpri_file(f); \ + mutex_unlock(&au_dbg_mtx); \ +} while (0) + +#define AuDbgSb(sb) do { \ + mutex_lock(&au_dbg_mtx); \ + AuDbg(#sb "\n"); \ + au_dpri_sb(sb); \ + mutex_unlock(&au_dbg_mtx); \ +} while (0) + +#define AuDbgSym(addr) do { \ + char sym[KSYM_SYMBOL_LEN]; \ + sprint_symbol(sym, (unsigned long)addr); \ + AuDbg("%s\n", sym); \ +} while (0) +#else +AuStubVoid(au_dbg_verify_dinode, struct dentry *dentry) +AuStubVoid(au_dbg_verify_gen, struct dentry *parent, unsigned int sigen) +AuStubVoid(au_dbg_verify_kthread, void) +AuStubInt0(__init au_debug_init, void) + +#define AuDbgWhlist(w) do {} while (0) +#define AuDbgVdir(v) do {} while (0) +#define AuDbgInode(i) do {} while (0) +#define AuDbgDAlias(i) do {} while (0) +#define AuDbgDentry(d) do {} while (0) +#define AuDbgFile(f) do {} while (0) +#define AuDbgSb(sb) do {} while (0) +#define AuDbgSym(addr) do {} while (0) +#endif /* CONFIG_AUFS_DEBUG */ + +/* ---------------------------------------------------------------------- */ + +#ifdef CONFIG_AUFS_MAGIC_SYSRQ +int __init au_sysrq_init(void); +void au_sysrq_fin(void); + +#ifdef CONFIG_HW_CONSOLE +#define au_dbg_blocked() do { \ + WARN_ON(1); \ + handle_sysrq('w'); \ +} while (0) +#else +AuStubVoid(au_dbg_blocked, void) +#endif + +#else +AuStubInt0(__init au_sysrq_init, void) +AuStubVoid(au_sysrq_fin, void) +AuStubVoid(au_dbg_blocked, void) +#endif /* CONFIG_AUFS_MAGIC_SYSRQ */ + +#endif /* __KERNEL__ */ +#endif /* __AUFS_DEBUG_H__ */ diff --git a/include/fs/aufs/dentry.c b/include/fs/aufs/dentry.c new file mode 100644 index 00000000000..51b84632460 --- /dev/null +++ b/include/fs/aufs/dentry.c @@ -0,0 +1,1152 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * lookup and dentry operations + */ + +#include +#include "aufs.h" + +/* + * returns positive/negative dentry, NULL or an error. + * NULL means whiteout-ed or not-found. + */ +static struct dentry* +au_do_lookup(struct dentry *h_parent, struct dentry *dentry, + aufs_bindex_t bindex, struct au_do_lookup_args *args) +{ + struct dentry *h_dentry; + struct inode *h_inode; + struct au_branch *br; + int wh_found, opq; + unsigned char wh_able; + const unsigned char allow_neg = !!au_ftest_lkup(args->flags, ALLOW_NEG); + const unsigned char ignore_perm = !!au_ftest_lkup(args->flags, + IGNORE_PERM); + + wh_found = 0; + br = au_sbr(dentry->d_sb, bindex); + wh_able = !!au_br_whable(br->br_perm); + if (wh_able) + wh_found = au_wh_test(h_parent, &args->whname, ignore_perm); + h_dentry = ERR_PTR(wh_found); + if (!wh_found) + goto real_lookup; + if (unlikely(wh_found < 0)) + goto out; + + /* We found a whiteout */ + /* au_set_dbbot(dentry, bindex); */ + au_set_dbwh(dentry, bindex); + if (!allow_neg) + return NULL; /* success */ + +real_lookup: + if (!ignore_perm) + h_dentry = vfsub_lkup_one(args->name, h_parent); + else + h_dentry = au_sio_lkup_one(args->name, h_parent); + if (IS_ERR(h_dentry)) { + if (PTR_ERR(h_dentry) == -ENAMETOOLONG + && !allow_neg) + h_dentry = NULL; + goto out; + } + + h_inode = d_inode(h_dentry); + if (d_is_negative(h_dentry)) { + if (!allow_neg) + goto out_neg; + } else if (wh_found + || (args->type && args->type != (h_inode->i_mode & S_IFMT))) + goto out_neg; + else if (au_ftest_lkup(args->flags, DIRREN) + /* && h_inode */ + && !au_dr_lkup_h_ino(args, bindex, h_inode->i_ino)) { + AuDbg("b%d %pd ignored hi%llu\n", bindex, h_dentry, + (unsigned long long)h_inode->i_ino); + goto out_neg; + } + + if (au_dbbot(dentry) <= bindex) + au_set_dbbot(dentry, bindex); + if (au_dbtop(dentry) < 0 || bindex < au_dbtop(dentry)) + au_set_dbtop(dentry, bindex); + au_set_h_dptr(dentry, bindex, h_dentry); + + if (!d_is_dir(h_dentry) + || !wh_able + || (d_really_is_positive(dentry) && !d_is_dir(dentry))) + goto out; /* success */ + + vfsub_inode_lock_shared_nested(h_inode, AuLsc_I_CHILD); + opq = au_diropq_test(h_dentry); + inode_unlock_shared(h_inode); + if (opq > 0) + au_set_dbdiropq(dentry, bindex); + else if (unlikely(opq < 0)) { + au_set_h_dptr(dentry, bindex, NULL); + h_dentry = ERR_PTR(opq); + } + goto out; + +out_neg: + dput(h_dentry); + h_dentry = NULL; +out: + return h_dentry; +} + +static int au_test_shwh(struct super_block *sb, const struct qstr *name) +{ + if (unlikely(!au_opt_test(au_mntflags(sb), SHWH) + && !strncmp(name->name, AUFS_WH_PFX, AUFS_WH_PFX_LEN))) + return -EPERM; + return 0; +} + +/* + * returns the number of lower positive dentries, + * otherwise an error. + * can be called at unlinking with @type is zero. + */ +int au_lkup_dentry(struct dentry *dentry, aufs_bindex_t btop, + unsigned int flags) +{ + int npositive, err; + aufs_bindex_t bindex, btail, bdiropq; + unsigned char isdir, dirperm1, dirren; + struct au_do_lookup_args args = { + .flags = flags, + .name = &dentry->d_name + }; + struct dentry *parent; + struct super_block *sb; + + sb = dentry->d_sb; + err = au_test_shwh(sb, args.name); + if (unlikely(err)) + goto out; + + err = au_wh_name_alloc(&args.whname, args.name); + if (unlikely(err)) + goto out; + + isdir = !!d_is_dir(dentry); + dirperm1 = !!au_opt_test(au_mntflags(sb), DIRPERM1); + dirren = !!au_opt_test(au_mntflags(sb), DIRREN); + if (dirren) + au_fset_lkup(args.flags, DIRREN); + + npositive = 0; + parent = dget_parent(dentry); + btail = au_dbtaildir(parent); + for (bindex = btop; bindex <= btail; bindex++) { + struct dentry *h_parent, *h_dentry; + struct inode *h_inode, *h_dir; + struct au_branch *br; + + h_dentry = au_h_dptr(dentry, bindex); + if (h_dentry) { + if (d_is_positive(h_dentry)) + npositive++; + break; + } + h_parent = au_h_dptr(parent, bindex); + if (!h_parent || !d_is_dir(h_parent)) + continue; + + if (dirren) { + /* if the inum matches, then use the prepared name */ + err = au_dr_lkup_name(&args, bindex); + if (unlikely(err)) + goto out_parent; + } + + h_dir = d_inode(h_parent); + vfsub_inode_lock_shared_nested(h_dir, AuLsc_I_PARENT); + h_dentry = au_do_lookup(h_parent, dentry, bindex, &args); + inode_unlock_shared(h_dir); + err = PTR_ERR(h_dentry); + if (IS_ERR(h_dentry)) + goto out_parent; + if (h_dentry) + au_fclr_lkup(args.flags, ALLOW_NEG); + if (dirperm1) + au_fset_lkup(args.flags, IGNORE_PERM); + + if (au_dbwh(dentry) == bindex) + break; + if (!h_dentry) + continue; + if (d_is_negative(h_dentry)) + continue; + h_inode = d_inode(h_dentry); + npositive++; + if (!args.type) + args.type = h_inode->i_mode & S_IFMT; + if (args.type != S_IFDIR) + break; + else if (isdir) { + /* the type of lower may be different */ + bdiropq = au_dbdiropq(dentry); + if (bdiropq >= 0 && bdiropq <= bindex) + break; + } + br = au_sbr(sb, bindex); + if (dirren + && au_dr_hino_test_add(&br->br_dirren, h_inode->i_ino, + /*add_ent*/NULL)) { + /* prepare next name to lookup */ + err = au_dr_lkup(&args, dentry, bindex); + if (unlikely(err)) + goto out_parent; + } + } + + if (npositive) { + AuLabel(positive); + au_update_dbtop(dentry); + } + err = npositive; + if (unlikely(!au_opt_test(au_mntflags(sb), UDBA_NONE) + && au_dbtop(dentry) < 0)) { + err = -EIO; + AuIOErr("both of real entry and whiteout found, %pd, err %d\n", + dentry, err); + } + +out_parent: + dput(parent); + kfree(args.whname.name); + if (dirren) + au_dr_lkup_fin(&args); +out: + return err; +} + +struct dentry *au_sio_lkup_one(struct qstr *name, struct dentry *parent) +{ + struct dentry *dentry; + int wkq_err; + + if (!au_test_h_perm_sio(d_inode(parent), MAY_EXEC)) + dentry = vfsub_lkup_one(name, parent); + else { + struct vfsub_lkup_one_args args = { + .errp = &dentry, + .name = name, + .parent = parent + }; + + wkq_err = au_wkq_wait(vfsub_call_lkup_one, &args); + if (unlikely(wkq_err)) + dentry = ERR_PTR(wkq_err); + } + + return dentry; +} + +/* + * lookup @dentry on @bindex which should be negative. + */ +int au_lkup_neg(struct dentry *dentry, aufs_bindex_t bindex, int wh) +{ + int err; + struct dentry *parent, *h_parent, *h_dentry; + struct au_branch *br; + + parent = dget_parent(dentry); + h_parent = au_h_dptr(parent, bindex); + br = au_sbr(dentry->d_sb, bindex); + if (wh) + h_dentry = au_whtmp_lkup(h_parent, br, &dentry->d_name); + else + h_dentry = au_sio_lkup_one(&dentry->d_name, h_parent); + err = PTR_ERR(h_dentry); + if (IS_ERR(h_dentry)) + goto out; + if (unlikely(d_is_positive(h_dentry))) { + err = -EIO; + AuIOErr("%pd should be negative on b%d.\n", h_dentry, bindex); + dput(h_dentry); + goto out; + } + + err = 0; + if (bindex < au_dbtop(dentry)) + au_set_dbtop(dentry, bindex); + if (au_dbbot(dentry) < bindex) + au_set_dbbot(dentry, bindex); + au_set_h_dptr(dentry, bindex, h_dentry); + +out: + dput(parent); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* subset of struct inode */ +struct au_iattr { + unsigned long i_ino; + /* unsigned int i_nlink; */ + kuid_t i_uid; + kgid_t i_gid; + u64 i_version; +/* + loff_t i_size; + blkcnt_t i_blocks; +*/ + umode_t i_mode; +}; + +static void au_iattr_save(struct au_iattr *ia, struct inode *h_inode) +{ + ia->i_ino = h_inode->i_ino; + /* ia->i_nlink = h_inode->i_nlink; */ + ia->i_uid = h_inode->i_uid; + ia->i_gid = h_inode->i_gid; + ia->i_version = h_inode->i_version; +/* + ia->i_size = h_inode->i_size; + ia->i_blocks = h_inode->i_blocks; +*/ + ia->i_mode = (h_inode->i_mode & S_IFMT); +} + +static int au_iattr_test(struct au_iattr *ia, struct inode *h_inode) +{ + return ia->i_ino != h_inode->i_ino + /* || ia->i_nlink != h_inode->i_nlink */ + || !uid_eq(ia->i_uid, h_inode->i_uid) + || !gid_eq(ia->i_gid, h_inode->i_gid) + || ia->i_version != h_inode->i_version +/* + || ia->i_size != h_inode->i_size + || ia->i_blocks != h_inode->i_blocks +*/ + || ia->i_mode != (h_inode->i_mode & S_IFMT); +} + +static int au_h_verify_dentry(struct dentry *h_dentry, struct dentry *h_parent, + struct au_branch *br) +{ + int err; + struct au_iattr ia; + struct inode *h_inode; + struct dentry *h_d; + struct super_block *h_sb; + + err = 0; + memset(&ia, -1, sizeof(ia)); + h_sb = h_dentry->d_sb; + h_inode = NULL; + if (d_is_positive(h_dentry)) { + h_inode = d_inode(h_dentry); + au_iattr_save(&ia, h_inode); + } else if (au_test_nfs(h_sb) || au_test_fuse(h_sb)) + /* nfs d_revalidate may return 0 for negative dentry */ + /* fuse d_revalidate always return 0 for negative dentry */ + goto out; + + /* main purpose is namei.c:cached_lookup() and d_revalidate */ + h_d = vfsub_lkup_one(&h_dentry->d_name, h_parent); + err = PTR_ERR(h_d); + if (IS_ERR(h_d)) + goto out; + + err = 0; + if (unlikely(h_d != h_dentry + || d_inode(h_d) != h_inode + || (h_inode && au_iattr_test(&ia, h_inode)))) + err = au_busy_or_stale(); + dput(h_d); + +out: + AuTraceErr(err); + return err; +} + +int au_h_verify(struct dentry *h_dentry, unsigned int udba, struct inode *h_dir, + struct dentry *h_parent, struct au_branch *br) +{ + int err; + + err = 0; + if (udba == AuOpt_UDBA_REVAL + && !au_test_fs_remote(h_dentry->d_sb)) { + IMustLock(h_dir); + err = (d_inode(h_dentry->d_parent) != h_dir); + } else if (udba != AuOpt_UDBA_NONE) + err = au_h_verify_dentry(h_dentry, h_parent, br); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int au_do_refresh_hdentry(struct dentry *dentry, struct dentry *parent) +{ + int err; + aufs_bindex_t new_bindex, bindex, bbot, bwh, bdiropq; + struct au_hdentry tmp, *p, *q; + struct au_dinfo *dinfo; + struct super_block *sb; + + DiMustWriteLock(dentry); + + sb = dentry->d_sb; + dinfo = au_di(dentry); + bbot = dinfo->di_bbot; + bwh = dinfo->di_bwh; + bdiropq = dinfo->di_bdiropq; + bindex = dinfo->di_btop; + p = au_hdentry(dinfo, bindex); + for (; bindex <= bbot; bindex++, p++) { + if (!p->hd_dentry) + continue; + + new_bindex = au_br_index(sb, p->hd_id); + if (new_bindex == bindex) + continue; + + if (dinfo->di_bwh == bindex) + bwh = new_bindex; + if (dinfo->di_bdiropq == bindex) + bdiropq = new_bindex; + if (new_bindex < 0) { + au_hdput(p); + p->hd_dentry = NULL; + continue; + } + + /* swap two lower dentries, and loop again */ + q = au_hdentry(dinfo, new_bindex); + tmp = *q; + *q = *p; + *p = tmp; + if (tmp.hd_dentry) { + bindex--; + p--; + } + } + + dinfo->di_bwh = -1; + if (bwh >= 0 && bwh <= au_sbbot(sb) && au_sbr_whable(sb, bwh)) + dinfo->di_bwh = bwh; + + dinfo->di_bdiropq = -1; + if (bdiropq >= 0 + && bdiropq <= au_sbbot(sb) + && au_sbr_whable(sb, bdiropq)) + dinfo->di_bdiropq = bdiropq; + + err = -EIO; + dinfo->di_btop = -1; + dinfo->di_bbot = -1; + bbot = au_dbbot(parent); + bindex = 0; + p = au_hdentry(dinfo, bindex); + for (; bindex <= bbot; bindex++, p++) + if (p->hd_dentry) { + dinfo->di_btop = bindex; + break; + } + + if (dinfo->di_btop >= 0) { + bindex = bbot; + p = au_hdentry(dinfo, bindex); + for (; bindex >= 0; bindex--, p--) + if (p->hd_dentry) { + dinfo->di_bbot = bindex; + err = 0; + break; + } + } + + return err; +} + +static void au_do_hide(struct dentry *dentry) +{ + struct inode *inode; + + if (d_really_is_positive(dentry)) { + inode = d_inode(dentry); + if (!d_is_dir(dentry)) { + if (inode->i_nlink && !d_unhashed(dentry)) + drop_nlink(inode); + } else { + clear_nlink(inode); + /* stop next lookup */ + inode->i_flags |= S_DEAD; + } + smp_mb(); /* necessary? */ + } + d_drop(dentry); +} + +static int au_hide_children(struct dentry *parent) +{ + int err, i, j, ndentry; + struct au_dcsub_pages dpages; + struct au_dpage *dpage; + struct dentry *dentry; + + err = au_dpages_init(&dpages, GFP_NOFS); + if (unlikely(err)) + goto out; + err = au_dcsub_pages(&dpages, parent, NULL, NULL); + if (unlikely(err)) + goto out_dpages; + + /* in reverse order */ + for (i = dpages.ndpage - 1; i >= 0; i--) { + dpage = dpages.dpages + i; + ndentry = dpage->ndentry; + for (j = ndentry - 1; j >= 0; j--) { + dentry = dpage->dentries[j]; + if (dentry != parent) + au_do_hide(dentry); + } + } + +out_dpages: + au_dpages_free(&dpages); +out: + return err; +} + +static void au_hide(struct dentry *dentry) +{ + int err; + + AuDbgDentry(dentry); + if (d_is_dir(dentry)) { + /* shrink_dcache_parent(dentry); */ + err = au_hide_children(dentry); + if (unlikely(err)) + AuIOErr("%pd, failed hiding children, ignored %d\n", + dentry, err); + } + au_do_hide(dentry); +} + +/* + * By adding a dirty branch, a cached dentry may be affected in various ways. + * + * a dirty branch is added + * - on the top of layers + * - in the middle of layers + * - to the bottom of layers + * + * on the added branch there exists + * - a whiteout + * - a diropq + * - a same named entry + * + exist + * * negative --> positive + * * positive --> positive + * - type is unchanged + * - type is changed + * + doesn't exist + * * negative --> negative + * * positive --> negative (rejected by au_br_del() for non-dir case) + * - none + */ +static int au_refresh_by_dinfo(struct dentry *dentry, struct au_dinfo *dinfo, + struct au_dinfo *tmp) +{ + int err; + aufs_bindex_t bindex, bbot; + struct { + struct dentry *dentry; + struct inode *inode; + mode_t mode; + } orig_h, tmp_h = { + .dentry = NULL + }; + struct au_hdentry *hd; + struct inode *inode, *h_inode; + struct dentry *h_dentry; + + err = 0; + AuDebugOn(dinfo->di_btop < 0); + orig_h.mode = 0; + orig_h.dentry = au_hdentry(dinfo, dinfo->di_btop)->hd_dentry; + orig_h.inode = NULL; + if (d_is_positive(orig_h.dentry)) { + orig_h.inode = d_inode(orig_h.dentry); + orig_h.mode = orig_h.inode->i_mode & S_IFMT; + } + if (tmp->di_btop >= 0) { + tmp_h.dentry = au_hdentry(tmp, tmp->di_btop)->hd_dentry; + if (d_is_positive(tmp_h.dentry)) { + tmp_h.inode = d_inode(tmp_h.dentry); + tmp_h.mode = tmp_h.inode->i_mode & S_IFMT; + } + } + + inode = NULL; + if (d_really_is_positive(dentry)) + inode = d_inode(dentry); + if (!orig_h.inode) { + AuDbg("nagative originally\n"); + if (inode) { + au_hide(dentry); + goto out; + } + AuDebugOn(inode); + AuDebugOn(dinfo->di_btop != dinfo->di_bbot); + AuDebugOn(dinfo->di_bdiropq != -1); + + if (!tmp_h.inode) { + AuDbg("negative --> negative\n"); + /* should have only one negative lower */ + if (tmp->di_btop >= 0 + && tmp->di_btop < dinfo->di_btop) { + AuDebugOn(tmp->di_btop != tmp->di_bbot); + AuDebugOn(dinfo->di_btop != dinfo->di_bbot); + au_set_h_dptr(dentry, dinfo->di_btop, NULL); + au_di_cp(dinfo, tmp); + hd = au_hdentry(tmp, tmp->di_btop); + au_set_h_dptr(dentry, tmp->di_btop, + dget(hd->hd_dentry)); + } + au_dbg_verify_dinode(dentry); + } else { + AuDbg("negative --> positive\n"); + /* + * similar to the behaviour of creating with bypassing + * aufs. + * unhash it in order to force an error in the + * succeeding create operation. + * we should not set S_DEAD here. + */ + d_drop(dentry); + /* au_di_swap(tmp, dinfo); */ + au_dbg_verify_dinode(dentry); + } + } else { + AuDbg("positive originally\n"); + /* inode may be NULL */ + AuDebugOn(inode && (inode->i_mode & S_IFMT) != orig_h.mode); + if (!tmp_h.inode) { + AuDbg("positive --> negative\n"); + /* or bypassing aufs */ + au_hide(dentry); + if (tmp->di_bwh >= 0 && tmp->di_bwh <= dinfo->di_btop) + dinfo->di_bwh = tmp->di_bwh; + if (inode) + err = au_refresh_hinode_self(inode); + au_dbg_verify_dinode(dentry); + } else if (orig_h.mode == tmp_h.mode) { + AuDbg("positive --> positive, same type\n"); + if (!S_ISDIR(orig_h.mode) + && dinfo->di_btop > tmp->di_btop) { + /* + * similar to the behaviour of removing and + * creating. + */ + au_hide(dentry); + if (inode) + err = au_refresh_hinode_self(inode); + au_dbg_verify_dinode(dentry); + } else { + /* fill empty slots */ + if (dinfo->di_btop > tmp->di_btop) + dinfo->di_btop = tmp->di_btop; + if (dinfo->di_bbot < tmp->di_bbot) + dinfo->di_bbot = tmp->di_bbot; + dinfo->di_bwh = tmp->di_bwh; + dinfo->di_bdiropq = tmp->di_bdiropq; + bbot = dinfo->di_bbot; + bindex = tmp->di_btop; + hd = au_hdentry(tmp, bindex); + for (; bindex <= bbot; bindex++, hd++) { + if (au_h_dptr(dentry, bindex)) + continue; + h_dentry = hd->hd_dentry; + if (!h_dentry) + continue; + AuDebugOn(d_is_negative(h_dentry)); + h_inode = d_inode(h_dentry); + AuDebugOn(orig_h.mode + != (h_inode->i_mode + & S_IFMT)); + au_set_h_dptr(dentry, bindex, + dget(h_dentry)); + } + if (inode) + err = au_refresh_hinode(inode, dentry); + au_dbg_verify_dinode(dentry); + } + } else { + AuDbg("positive --> positive, different type\n"); + /* similar to the behaviour of removing and creating */ + au_hide(dentry); + if (inode) + err = au_refresh_hinode_self(inode); + au_dbg_verify_dinode(dentry); + } + } + +out: + return err; +} + +void au_refresh_dop(struct dentry *dentry, int force_reval) +{ + const struct dentry_operations *dop + = force_reval ? &aufs_dop : dentry->d_sb->s_d_op; + static const unsigned int mask + = DCACHE_OP_REVALIDATE | DCACHE_OP_WEAK_REVALIDATE; + + BUILD_BUG_ON(sizeof(mask) != sizeof(dentry->d_flags)); + + if (dentry->d_op == dop) + return; + + AuDbg("%pd\n", dentry); + spin_lock(&dentry->d_lock); + if (dop == &aufs_dop) + dentry->d_flags |= mask; + else + dentry->d_flags &= ~mask; + dentry->d_op = dop; + spin_unlock(&dentry->d_lock); +} + +int au_refresh_dentry(struct dentry *dentry, struct dentry *parent) +{ + int err, ebrange, nbr; + unsigned int sigen; + struct au_dinfo *dinfo, *tmp; + struct super_block *sb; + struct inode *inode; + + DiMustWriteLock(dentry); + AuDebugOn(IS_ROOT(dentry)); + AuDebugOn(d_really_is_negative(parent)); + + sb = dentry->d_sb; + sigen = au_sigen(sb); + err = au_digen_test(parent, sigen); + if (unlikely(err)) + goto out; + + nbr = au_sbbot(sb) + 1; + dinfo = au_di(dentry); + err = au_di_realloc(dinfo, nbr, /*may_shrink*/0); + if (unlikely(err)) + goto out; + ebrange = au_dbrange_test(dentry); + if (!ebrange) + ebrange = au_do_refresh_hdentry(dentry, parent); + + if (d_unhashed(dentry) || ebrange /* || dinfo->di_tmpfile */) { + AuDebugOn(au_dbtop(dentry) < 0 && au_dbbot(dentry) >= 0); + if (d_really_is_positive(dentry)) { + inode = d_inode(dentry); + err = au_refresh_hinode_self(inode); + } + au_dbg_verify_dinode(dentry); + if (!err) + goto out_dgen; /* success */ + goto out; + } + + /* temporary dinfo */ + AuDbgDentry(dentry); + err = -ENOMEM; + tmp = au_di_alloc(sb, AuLsc_DI_TMP); + if (unlikely(!tmp)) + goto out; + au_di_swap(tmp, dinfo); + /* returns the number of positive dentries */ + /* + * if current working dir is removed, it returns an error. + * but the dentry is legal. + */ + err = au_lkup_dentry(dentry, /*btop*/0, AuLkup_ALLOW_NEG); + AuDbgDentry(dentry); + au_di_swap(tmp, dinfo); + if (err == -ENOENT) + err = 0; + if (err >= 0) { + /* compare/refresh by dinfo */ + AuDbgDentry(dentry); + err = au_refresh_by_dinfo(dentry, dinfo, tmp); + au_dbg_verify_dinode(dentry); + AuTraceErr(err); + } + au_di_realloc(dinfo, nbr, /*may_shrink*/1); /* harmless if err */ + au_rw_write_unlock(&tmp->di_rwsem); + au_di_free(tmp); + if (unlikely(err)) + goto out; + +out_dgen: + au_update_digen(dentry); +out: + if (unlikely(err && !(dentry->d_flags & DCACHE_NFSFS_RENAMED))) { + AuIOErr("failed refreshing %pd, %d\n", dentry, err); + AuDbgDentry(dentry); + } + AuTraceErr(err); + return err; +} + +static int au_do_h_d_reval(struct dentry *h_dentry, unsigned int flags, + struct dentry *dentry, aufs_bindex_t bindex) +{ + int err, valid; + + err = 0; + if (!(h_dentry->d_flags & DCACHE_OP_REVALIDATE)) + goto out; + + AuDbg("b%d\n", bindex); + /* + * gave up supporting LOOKUP_CREATE/OPEN for lower fs, + * due to whiteout and branch permission. + */ + flags &= ~(/*LOOKUP_PARENT |*/ LOOKUP_OPEN | LOOKUP_CREATE + | LOOKUP_FOLLOW | LOOKUP_EXCL); + /* it may return tri-state */ + valid = h_dentry->d_op->d_revalidate(h_dentry, flags); + + if (unlikely(valid < 0)) + err = valid; + else if (!valid) + err = -EINVAL; + +out: + AuTraceErr(err); + return err; +} + +/* todo: remove this */ +static int h_d_revalidate(struct dentry *dentry, struct inode *inode, + unsigned int flags, int do_udba, int dirren) +{ + int err; + umode_t mode, h_mode; + aufs_bindex_t bindex, btail, btop, ibs, ibe; + unsigned char plus, unhashed, is_root, h_plus, h_nfs, tmpfile; + struct inode *h_inode, *h_cached_inode; + struct dentry *h_dentry; + struct qstr *name, *h_name; + + err = 0; + plus = 0; + mode = 0; + ibs = -1; + ibe = -1; + unhashed = !!d_unhashed(dentry); + is_root = !!IS_ROOT(dentry); + name = &dentry->d_name; + tmpfile = au_di(dentry)->di_tmpfile; + + /* + * Theoretically, REVAL test should be unnecessary in case of + * {FS,I}NOTIFY. + * But {fs,i}notify doesn't fire some necessary events, + * IN_ATTRIB for atime/nlink/pageio + * Let's do REVAL test too. + */ + if (do_udba && inode) { + mode = (inode->i_mode & S_IFMT); + plus = (inode->i_nlink > 0); + ibs = au_ibtop(inode); + ibe = au_ibbot(inode); + } + + btop = au_dbtop(dentry); + btail = btop; + if (inode && S_ISDIR(inode->i_mode)) + btail = au_dbtaildir(dentry); + for (bindex = btop; bindex <= btail; bindex++) { + h_dentry = au_h_dptr(dentry, bindex); + if (!h_dentry) + continue; + + AuDbg("b%d, %pd\n", bindex, h_dentry); + h_nfs = !!au_test_nfs(h_dentry->d_sb); + spin_lock(&h_dentry->d_lock); + h_name = &h_dentry->d_name; + if (unlikely(do_udba + && !is_root + && ((!h_nfs + && (unhashed != !!d_unhashed(h_dentry) + || (!tmpfile && !dirren + && !au_qstreq(name, h_name)) + )) + || (h_nfs + && !(flags & LOOKUP_OPEN) + && (h_dentry->d_flags + & DCACHE_NFSFS_RENAMED))) + )) { + int h_unhashed; + + h_unhashed = d_unhashed(h_dentry); + spin_unlock(&h_dentry->d_lock); + AuDbg("unhash 0x%x 0x%x, %pd %pd\n", + unhashed, h_unhashed, dentry, h_dentry); + goto err; + } + spin_unlock(&h_dentry->d_lock); + + err = au_do_h_d_reval(h_dentry, flags, dentry, bindex); + if (unlikely(err)) + /* do not goto err, to keep the errno */ + break; + + /* todo: plink too? */ + if (!do_udba) + continue; + + /* UDBA tests */ + if (unlikely(!!inode != d_is_positive(h_dentry))) + goto err; + + h_inode = NULL; + if (d_is_positive(h_dentry)) + h_inode = d_inode(h_dentry); + h_plus = plus; + h_mode = mode; + h_cached_inode = h_inode; + if (h_inode) { + h_mode = (h_inode->i_mode & S_IFMT); + h_plus = (h_inode->i_nlink > 0); + } + if (inode && ibs <= bindex && bindex <= ibe) + h_cached_inode = au_h_iptr(inode, bindex); + + if (!h_nfs) { + if (unlikely(plus != h_plus && !tmpfile)) + goto err; + } else { + if (unlikely(!(h_dentry->d_flags & DCACHE_NFSFS_RENAMED) + && !is_root + && !IS_ROOT(h_dentry) + && unhashed != d_unhashed(h_dentry))) + goto err; + } + if (unlikely(mode != h_mode + || h_cached_inode != h_inode)) + goto err; + continue; + +err: + err = -EINVAL; + break; + } + + AuTraceErr(err); + return err; +} + +/* todo: consolidate with do_refresh() and au_reval_for_attr() */ +static int simple_reval_dpath(struct dentry *dentry, unsigned int sigen) +{ + int err; + struct dentry *parent; + + if (!au_digen_test(dentry, sigen)) + return 0; + + parent = dget_parent(dentry); + di_read_lock_parent(parent, AuLock_IR); + AuDebugOn(au_digen_test(parent, sigen)); + au_dbg_verify_gen(parent, sigen); + err = au_refresh_dentry(dentry, parent); + di_read_unlock(parent, AuLock_IR); + dput(parent); + AuTraceErr(err); + return err; +} + +int au_reval_dpath(struct dentry *dentry, unsigned int sigen) +{ + int err; + struct dentry *d, *parent; + + if (!au_ftest_si(au_sbi(dentry->d_sb), FAILED_REFRESH_DIR)) + return simple_reval_dpath(dentry, sigen); + + /* slow loop, keep it simple and stupid */ + /* cf: au_cpup_dirs() */ + err = 0; + parent = NULL; + while (au_digen_test(dentry, sigen)) { + d = dentry; + while (1) { + dput(parent); + parent = dget_parent(d); + if (!au_digen_test(parent, sigen)) + break; + d = parent; + } + + if (d != dentry) + di_write_lock_child2(d); + + /* someone might update our dentry while we were sleeping */ + if (au_digen_test(d, sigen)) { + /* + * todo: consolidate with simple_reval_dpath(), + * do_refresh() and au_reval_for_attr(). + */ + di_read_lock_parent(parent, AuLock_IR); + err = au_refresh_dentry(d, parent); + di_read_unlock(parent, AuLock_IR); + } + + if (d != dentry) + di_write_unlock(d); + dput(parent); + if (unlikely(err)) + break; + } + + return err; +} + +/* + * if valid returns 1, otherwise 0. + */ +static int aufs_d_revalidate(struct dentry *dentry, unsigned int flags) +{ + int valid, err; + unsigned int sigen; + unsigned char do_udba, dirren; + struct super_block *sb; + struct inode *inode; + + /* todo: support rcu-walk? */ + if (flags & LOOKUP_RCU) + return -ECHILD; + + valid = 0; + if (unlikely(!au_di(dentry))) + goto out; + + valid = 1; + sb = dentry->d_sb; + /* + * todo: very ugly + * i_mutex of parent dir may be held, + * but we should not return 'invalid' due to busy. + */ + err = aufs_read_lock(dentry, AuLock_FLUSH | AuLock_DW | AuLock_NOPLM); + if (unlikely(err)) { + valid = err; + AuTraceErr(err); + goto out; + } + inode = NULL; + if (d_really_is_positive(dentry)) + inode = d_inode(dentry); + if (unlikely(inode && au_is_bad_inode(inode))) { + err = -EINVAL; + AuTraceErr(err); + goto out_dgrade; + } + if (unlikely(au_dbrange_test(dentry))) { + err = -EINVAL; + AuTraceErr(err); + goto out_dgrade; + } + + sigen = au_sigen(sb); + if (au_digen_test(dentry, sigen)) { + AuDebugOn(IS_ROOT(dentry)); + err = au_reval_dpath(dentry, sigen); + if (unlikely(err)) { + AuTraceErr(err); + goto out_dgrade; + } + } + di_downgrade_lock(dentry, AuLock_IR); + + err = -EINVAL; + if (!(flags & (LOOKUP_OPEN | LOOKUP_EMPTY)) + && inode + && !(inode->i_state && I_LINKABLE) + && (IS_DEADDIR(inode) || !inode->i_nlink)) { + AuTraceErr(err); + goto out_inval; + } + + do_udba = !au_opt_test(au_mntflags(sb), UDBA_NONE); + if (do_udba && inode) { + aufs_bindex_t btop = au_ibtop(inode); + struct inode *h_inode; + + if (btop >= 0) { + h_inode = au_h_iptr(inode, btop); + if (h_inode && au_test_higen(inode, h_inode)) { + AuTraceErr(err); + goto out_inval; + } + } + } + + dirren = !!au_opt_test(au_mntflags(sb), DIRREN); + err = h_d_revalidate(dentry, inode, flags, do_udba, dirren); + if (unlikely(!err && do_udba && au_dbtop(dentry) < 0)) { + err = -EIO; + AuDbg("both of real entry and whiteout found, %p, err %d\n", + dentry, err); + } + goto out_inval; + +out_dgrade: + di_downgrade_lock(dentry, AuLock_IR); +out_inval: + aufs_read_unlock(dentry, AuLock_IR); + AuTraceErr(err); + valid = !err; +out: + if (!valid) { + AuDbg("%pd invalid, %d\n", dentry, valid); + d_drop(dentry); + } + return valid; +} + +static void aufs_d_release(struct dentry *dentry) +{ + if (au_di(dentry)) { + au_di_fin(dentry); + au_hn_di_reinit(dentry); + } +} + +const struct dentry_operations aufs_dop = { + .d_revalidate = aufs_d_revalidate, + .d_weak_revalidate = aufs_d_revalidate, + .d_release = aufs_d_release +}; + +/* aufs_dop without d_revalidate */ +const struct dentry_operations aufs_dop_noreval = { + .d_release = aufs_d_release +}; diff --git a/include/fs/aufs/dentry.h b/include/fs/aufs/dentry.h new file mode 100644 index 00000000000..8f20b51d56e --- /dev/null +++ b/include/fs/aufs/dentry.h @@ -0,0 +1,266 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * lookup and dentry operations + */ + +#ifndef __AUFS_DENTRY_H__ +#define __AUFS_DENTRY_H__ + +#ifdef __KERNEL__ + +#include +#include "dirren.h" +#include "rwsem.h" + +struct au_hdentry { + struct dentry *hd_dentry; + aufs_bindex_t hd_id; +}; + +struct au_dinfo { + atomic_t di_generation; + + struct au_rwsem di_rwsem; + aufs_bindex_t di_btop, di_bbot, di_bwh, di_bdiropq; + unsigned char di_tmpfile; /* to allow the different name */ + struct au_hdentry *di_hdentry; +} ____cacheline_aligned_in_smp; + +/* ---------------------------------------------------------------------- */ + +/* flags for au_lkup_dentry() */ +#define AuLkup_ALLOW_NEG 1 +#define AuLkup_IGNORE_PERM (1 << 1) +#define AuLkup_DIRREN (1 << 2) +#define au_ftest_lkup(flags, name) ((flags) & AuLkup_##name) +#define au_fset_lkup(flags, name) \ + do { (flags) |= AuLkup_##name; } while (0) +#define au_fclr_lkup(flags, name) \ + do { (flags) &= ~AuLkup_##name; } while (0) + +#ifndef CONFIG_AUFS_DIRREN +#undef AuLkup_DIRREN +#define AuLkup_DIRREN 0 +#endif + +struct au_do_lookup_args { + unsigned int flags; + mode_t type; + struct qstr whname, *name; + struct au_dr_lookup dirren; +}; + +/* ---------------------------------------------------------------------- */ + +/* dentry.c */ +extern const struct dentry_operations aufs_dop, aufs_dop_noreval; +struct au_branch; +struct dentry *au_sio_lkup_one(struct qstr *name, struct dentry *parent); +int au_h_verify(struct dentry *h_dentry, unsigned int udba, struct inode *h_dir, + struct dentry *h_parent, struct au_branch *br); + +int au_lkup_dentry(struct dentry *dentry, aufs_bindex_t btop, + unsigned int flags); +int au_lkup_neg(struct dentry *dentry, aufs_bindex_t bindex, int wh); +int au_refresh_dentry(struct dentry *dentry, struct dentry *parent); +int au_reval_dpath(struct dentry *dentry, unsigned int sigen); +void au_refresh_dop(struct dentry *dentry, int force_reval); + +/* dinfo.c */ +void au_di_init_once(void *_di); +struct au_dinfo *au_di_alloc(struct super_block *sb, unsigned int lsc); +void au_di_free(struct au_dinfo *dinfo); +void au_di_swap(struct au_dinfo *a, struct au_dinfo *b); +void au_di_cp(struct au_dinfo *dst, struct au_dinfo *src); +int au_di_init(struct dentry *dentry); +void au_di_fin(struct dentry *dentry); +int au_di_realloc(struct au_dinfo *dinfo, int nbr, int may_shrink); + +void di_read_lock(struct dentry *d, int flags, unsigned int lsc); +void di_read_unlock(struct dentry *d, int flags); +void di_downgrade_lock(struct dentry *d, int flags); +void di_write_lock(struct dentry *d, unsigned int lsc); +void di_write_unlock(struct dentry *d); +void di_write_lock2_child(struct dentry *d1, struct dentry *d2, int isdir); +void di_write_lock2_parent(struct dentry *d1, struct dentry *d2, int isdir); +void di_write_unlock2(struct dentry *d1, struct dentry *d2); + +struct dentry *au_h_dptr(struct dentry *dentry, aufs_bindex_t bindex); +struct dentry *au_h_d_alias(struct dentry *dentry, aufs_bindex_t bindex); +aufs_bindex_t au_dbtail(struct dentry *dentry); +aufs_bindex_t au_dbtaildir(struct dentry *dentry); + +void au_set_h_dptr(struct dentry *dentry, aufs_bindex_t bindex, + struct dentry *h_dentry); +int au_digen_test(struct dentry *dentry, unsigned int sigen); +int au_dbrange_test(struct dentry *dentry); +void au_update_digen(struct dentry *dentry); +void au_update_dbrange(struct dentry *dentry, int do_put_zero); +void au_update_dbtop(struct dentry *dentry); +void au_update_dbbot(struct dentry *dentry); +int au_find_dbindex(struct dentry *dentry, struct dentry *h_dentry); + +/* ---------------------------------------------------------------------- */ + +static inline struct au_dinfo *au_di(struct dentry *dentry) +{ + return dentry->d_fsdata; +} + +/* ---------------------------------------------------------------------- */ + +/* lock subclass for dinfo */ +enum { + AuLsc_DI_CHILD, /* child first */ + AuLsc_DI_CHILD2, /* rename(2), link(2), and cpup at hnotify */ + AuLsc_DI_CHILD3, /* copyup dirs */ + AuLsc_DI_PARENT, + AuLsc_DI_PARENT2, + AuLsc_DI_PARENT3, + AuLsc_DI_TMP /* temp for replacing dinfo */ +}; + +/* + * di_read_lock_child, di_write_lock_child, + * di_read_lock_child2, di_write_lock_child2, + * di_read_lock_child3, di_write_lock_child3, + * di_read_lock_parent, di_write_lock_parent, + * di_read_lock_parent2, di_write_lock_parent2, + * di_read_lock_parent3, di_write_lock_parent3, + */ +#define AuReadLockFunc(name, lsc) \ +static inline void di_read_lock_##name(struct dentry *d, int flags) \ +{ di_read_lock(d, flags, AuLsc_DI_##lsc); } + +#define AuWriteLockFunc(name, lsc) \ +static inline void di_write_lock_##name(struct dentry *d) \ +{ di_write_lock(d, AuLsc_DI_##lsc); } + +#define AuRWLockFuncs(name, lsc) \ + AuReadLockFunc(name, lsc) \ + AuWriteLockFunc(name, lsc) + +AuRWLockFuncs(child, CHILD); +AuRWLockFuncs(child2, CHILD2); +AuRWLockFuncs(child3, CHILD3); +AuRWLockFuncs(parent, PARENT); +AuRWLockFuncs(parent2, PARENT2); +AuRWLockFuncs(parent3, PARENT3); + +#undef AuReadLockFunc +#undef AuWriteLockFunc +#undef AuRWLockFuncs + +#define DiMustNoWaiters(d) AuRwMustNoWaiters(&au_di(d)->di_rwsem) +#define DiMustAnyLock(d) AuRwMustAnyLock(&au_di(d)->di_rwsem) +#define DiMustWriteLock(d) AuRwMustWriteLock(&au_di(d)->di_rwsem) + +/* ---------------------------------------------------------------------- */ + +/* todo: memory barrier? */ +static inline unsigned int au_digen(struct dentry *d) +{ + return atomic_read(&au_di(d)->di_generation); +} + +static inline void au_h_dentry_init(struct au_hdentry *hdentry) +{ + hdentry->hd_dentry = NULL; +} + +static inline struct au_hdentry *au_hdentry(struct au_dinfo *di, + aufs_bindex_t bindex) +{ + return di->di_hdentry + bindex; +} + +static inline void au_hdput(struct au_hdentry *hd) +{ + if (hd) + dput(hd->hd_dentry); +} + +static inline aufs_bindex_t au_dbtop(struct dentry *dentry) +{ + DiMustAnyLock(dentry); + return au_di(dentry)->di_btop; +} + +static inline aufs_bindex_t au_dbbot(struct dentry *dentry) +{ + DiMustAnyLock(dentry); + return au_di(dentry)->di_bbot; +} + +static inline aufs_bindex_t au_dbwh(struct dentry *dentry) +{ + DiMustAnyLock(dentry); + return au_di(dentry)->di_bwh; +} + +static inline aufs_bindex_t au_dbdiropq(struct dentry *dentry) +{ + DiMustAnyLock(dentry); + return au_di(dentry)->di_bdiropq; +} + +/* todo: hard/soft set? */ +static inline void au_set_dbtop(struct dentry *dentry, aufs_bindex_t bindex) +{ + DiMustWriteLock(dentry); + au_di(dentry)->di_btop = bindex; +} + +static inline void au_set_dbbot(struct dentry *dentry, aufs_bindex_t bindex) +{ + DiMustWriteLock(dentry); + au_di(dentry)->di_bbot = bindex; +} + +static inline void au_set_dbwh(struct dentry *dentry, aufs_bindex_t bindex) +{ + DiMustWriteLock(dentry); + /* dbwh can be outside of btop - bbot range */ + au_di(dentry)->di_bwh = bindex; +} + +static inline void au_set_dbdiropq(struct dentry *dentry, aufs_bindex_t bindex) +{ + DiMustWriteLock(dentry); + au_di(dentry)->di_bdiropq = bindex; +} + +/* ---------------------------------------------------------------------- */ + +#ifdef CONFIG_AUFS_HNOTIFY +static inline void au_digen_dec(struct dentry *d) +{ + atomic_dec(&au_di(d)->di_generation); +} + +static inline void au_hn_di_reinit(struct dentry *dentry) +{ + dentry->d_fsdata = NULL; +} +#else +AuStubVoid(au_hn_di_reinit, struct dentry *dentry __maybe_unused) +#endif /* CONFIG_AUFS_HNOTIFY */ + +#endif /* __KERNEL__ */ +#endif /* __AUFS_DENTRY_H__ */ diff --git a/include/fs/aufs/dinfo.c b/include/fs/aufs/dinfo.c new file mode 100644 index 00000000000..75b7ea4a5ba --- /dev/null +++ b/include/fs/aufs/dinfo.c @@ -0,0 +1,553 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * dentry private data + */ + +#include "aufs.h" + +void au_di_init_once(void *_dinfo) +{ + struct au_dinfo *dinfo = _dinfo; + + au_rw_init(&dinfo->di_rwsem); +} + +struct au_dinfo *au_di_alloc(struct super_block *sb, unsigned int lsc) +{ + struct au_dinfo *dinfo; + int nbr, i; + + dinfo = au_cache_alloc_dinfo(); + if (unlikely(!dinfo)) + goto out; + + nbr = au_sbbot(sb) + 1; + if (nbr <= 0) + nbr = 1; + dinfo->di_hdentry = kcalloc(nbr, sizeof(*dinfo->di_hdentry), GFP_NOFS); + if (dinfo->di_hdentry) { + au_rw_write_lock_nested(&dinfo->di_rwsem, lsc); + dinfo->di_btop = -1; + dinfo->di_bbot = -1; + dinfo->di_bwh = -1; + dinfo->di_bdiropq = -1; + dinfo->di_tmpfile = 0; + for (i = 0; i < nbr; i++) + dinfo->di_hdentry[i].hd_id = -1; + goto out; + } + + au_cache_free_dinfo(dinfo); + dinfo = NULL; + +out: + return dinfo; +} + +void au_di_free(struct au_dinfo *dinfo) +{ + struct au_hdentry *p; + aufs_bindex_t bbot, bindex; + + /* dentry may not be revalidated */ + bindex = dinfo->di_btop; + if (bindex >= 0) { + bbot = dinfo->di_bbot; + p = au_hdentry(dinfo, bindex); + while (bindex++ <= bbot) + au_hdput(p++); + } + kfree(dinfo->di_hdentry); + au_cache_free_dinfo(dinfo); +} + +void au_di_swap(struct au_dinfo *a, struct au_dinfo *b) +{ + struct au_hdentry *p; + aufs_bindex_t bi; + + AuRwMustWriteLock(&a->di_rwsem); + AuRwMustWriteLock(&b->di_rwsem); + +#define DiSwap(v, name) \ + do { \ + v = a->di_##name; \ + a->di_##name = b->di_##name; \ + b->di_##name = v; \ + } while (0) + + DiSwap(p, hdentry); + DiSwap(bi, btop); + DiSwap(bi, bbot); + DiSwap(bi, bwh); + DiSwap(bi, bdiropq); + /* smp_mb(); */ + +#undef DiSwap +} + +void au_di_cp(struct au_dinfo *dst, struct au_dinfo *src) +{ + AuRwMustWriteLock(&dst->di_rwsem); + AuRwMustWriteLock(&src->di_rwsem); + + dst->di_btop = src->di_btop; + dst->di_bbot = src->di_bbot; + dst->di_bwh = src->di_bwh; + dst->di_bdiropq = src->di_bdiropq; + /* smp_mb(); */ +} + +int au_di_init(struct dentry *dentry) +{ + int err; + struct super_block *sb; + struct au_dinfo *dinfo; + + err = 0; + sb = dentry->d_sb; + dinfo = au_di_alloc(sb, AuLsc_DI_CHILD); + if (dinfo) { + atomic_set(&dinfo->di_generation, au_sigen(sb)); + /* smp_mb(); */ /* atomic_set */ + dentry->d_fsdata = dinfo; + } else + err = -ENOMEM; + + return err; +} + +void au_di_fin(struct dentry *dentry) +{ + struct au_dinfo *dinfo; + + dinfo = au_di(dentry); + AuRwDestroy(&dinfo->di_rwsem); + au_di_free(dinfo); +} + +int au_di_realloc(struct au_dinfo *dinfo, int nbr, int may_shrink) +{ + int err, sz; + struct au_hdentry *hdp; + + AuRwMustWriteLock(&dinfo->di_rwsem); + + err = -ENOMEM; + sz = sizeof(*hdp) * (dinfo->di_bbot + 1); + if (!sz) + sz = sizeof(*hdp); + hdp = au_kzrealloc(dinfo->di_hdentry, sz, sizeof(*hdp) * nbr, GFP_NOFS, + may_shrink); + if (hdp) { + dinfo->di_hdentry = hdp; + err = 0; + } + + return err; +} + +/* ---------------------------------------------------------------------- */ + +static void do_ii_write_lock(struct inode *inode, unsigned int lsc) +{ + switch (lsc) { + case AuLsc_DI_CHILD: + ii_write_lock_child(inode); + break; + case AuLsc_DI_CHILD2: + ii_write_lock_child2(inode); + break; + case AuLsc_DI_CHILD3: + ii_write_lock_child3(inode); + break; + case AuLsc_DI_PARENT: + ii_write_lock_parent(inode); + break; + case AuLsc_DI_PARENT2: + ii_write_lock_parent2(inode); + break; + case AuLsc_DI_PARENT3: + ii_write_lock_parent3(inode); + break; + default: + BUG(); + } +} + +static void do_ii_read_lock(struct inode *inode, unsigned int lsc) +{ + switch (lsc) { + case AuLsc_DI_CHILD: + ii_read_lock_child(inode); + break; + case AuLsc_DI_CHILD2: + ii_read_lock_child2(inode); + break; + case AuLsc_DI_CHILD3: + ii_read_lock_child3(inode); + break; + case AuLsc_DI_PARENT: + ii_read_lock_parent(inode); + break; + case AuLsc_DI_PARENT2: + ii_read_lock_parent2(inode); + break; + case AuLsc_DI_PARENT3: + ii_read_lock_parent3(inode); + break; + default: + BUG(); + } +} + +void di_read_lock(struct dentry *d, int flags, unsigned int lsc) +{ + struct inode *inode; + + au_rw_read_lock_nested(&au_di(d)->di_rwsem, lsc); + if (d_really_is_positive(d)) { + inode = d_inode(d); + if (au_ftest_lock(flags, IW)) + do_ii_write_lock(inode, lsc); + else if (au_ftest_lock(flags, IR)) + do_ii_read_lock(inode, lsc); + } +} + +void di_read_unlock(struct dentry *d, int flags) +{ + struct inode *inode; + + if (d_really_is_positive(d)) { + inode = d_inode(d); + if (au_ftest_lock(flags, IW)) { + au_dbg_verify_dinode(d); + ii_write_unlock(inode); + } else if (au_ftest_lock(flags, IR)) { + au_dbg_verify_dinode(d); + ii_read_unlock(inode); + } + } + au_rw_read_unlock(&au_di(d)->di_rwsem); +} + +void di_downgrade_lock(struct dentry *d, int flags) +{ + if (d_really_is_positive(d) && au_ftest_lock(flags, IR)) + ii_downgrade_lock(d_inode(d)); + au_rw_dgrade_lock(&au_di(d)->di_rwsem); +} + +void di_write_lock(struct dentry *d, unsigned int lsc) +{ + au_rw_write_lock_nested(&au_di(d)->di_rwsem, lsc); + if (d_really_is_positive(d)) + do_ii_write_lock(d_inode(d), lsc); +} + +void di_write_unlock(struct dentry *d) +{ + au_dbg_verify_dinode(d); + if (d_really_is_positive(d)) + ii_write_unlock(d_inode(d)); + au_rw_write_unlock(&au_di(d)->di_rwsem); +} + +void di_write_lock2_child(struct dentry *d1, struct dentry *d2, int isdir) +{ + AuDebugOn(d1 == d2 + || d_inode(d1) == d_inode(d2) + || d1->d_sb != d2->d_sb); + + if ((isdir && au_test_subdir(d1, d2)) + || d1 < d2) { + di_write_lock_child(d1); + di_write_lock_child2(d2); + } else { + di_write_lock_child(d2); + di_write_lock_child2(d1); + } +} + +void di_write_lock2_parent(struct dentry *d1, struct dentry *d2, int isdir) +{ + AuDebugOn(d1 == d2 + || d_inode(d1) == d_inode(d2) + || d1->d_sb != d2->d_sb); + + if ((isdir && au_test_subdir(d1, d2)) + || d1 < d2) { + di_write_lock_parent(d1); + di_write_lock_parent2(d2); + } else { + di_write_lock_parent(d2); + di_write_lock_parent2(d1); + } +} + +void di_write_unlock2(struct dentry *d1, struct dentry *d2) +{ + di_write_unlock(d1); + if (d_inode(d1) == d_inode(d2)) + au_rw_write_unlock(&au_di(d2)->di_rwsem); + else + di_write_unlock(d2); +} + +/* ---------------------------------------------------------------------- */ + +struct dentry *au_h_dptr(struct dentry *dentry, aufs_bindex_t bindex) +{ + struct dentry *d; + + DiMustAnyLock(dentry); + + if (au_dbtop(dentry) < 0 || bindex < au_dbtop(dentry)) + return NULL; + AuDebugOn(bindex < 0); + d = au_hdentry(au_di(dentry), bindex)->hd_dentry; + AuDebugOn(d && au_dcount(d) <= 0); + return d; +} + +/* + * extended version of au_h_dptr(). + * returns a hashed and positive (or linkable) h_dentry in bindex, NULL, or + * error. + */ +struct dentry *au_h_d_alias(struct dentry *dentry, aufs_bindex_t bindex) +{ + struct dentry *h_dentry; + struct inode *inode, *h_inode; + + AuDebugOn(d_really_is_negative(dentry)); + + h_dentry = NULL; + if (au_dbtop(dentry) <= bindex + && bindex <= au_dbbot(dentry)) + h_dentry = au_h_dptr(dentry, bindex); + if (h_dentry && !au_d_linkable(h_dentry)) { + dget(h_dentry); + goto out; /* success */ + } + + inode = d_inode(dentry); + AuDebugOn(bindex < au_ibtop(inode)); + AuDebugOn(au_ibbot(inode) < bindex); + h_inode = au_h_iptr(inode, bindex); + h_dentry = d_find_alias(h_inode); + if (h_dentry) { + if (!IS_ERR(h_dentry)) { + if (!au_d_linkable(h_dentry)) + goto out; /* success */ + dput(h_dentry); + } else + goto out; + } + + if (au_opt_test(au_mntflags(dentry->d_sb), PLINK)) { + h_dentry = au_plink_lkup(inode, bindex); + AuDebugOn(!h_dentry); + if (!IS_ERR(h_dentry)) { + if (!au_d_hashed_positive(h_dentry)) + goto out; /* success */ + dput(h_dentry); + h_dentry = NULL; + } + } + +out: + AuDbgDentry(h_dentry); + return h_dentry; +} + +aufs_bindex_t au_dbtail(struct dentry *dentry) +{ + aufs_bindex_t bbot, bwh; + + bbot = au_dbbot(dentry); + if (0 <= bbot) { + bwh = au_dbwh(dentry); + if (!bwh) + return bwh; + if (0 < bwh && bwh < bbot) + return bwh - 1; + } + return bbot; +} + +aufs_bindex_t au_dbtaildir(struct dentry *dentry) +{ + aufs_bindex_t bbot, bopq; + + bbot = au_dbtail(dentry); + if (0 <= bbot) { + bopq = au_dbdiropq(dentry); + if (0 <= bopq && bopq < bbot) + bbot = bopq; + } + return bbot; +} + +/* ---------------------------------------------------------------------- */ + +void au_set_h_dptr(struct dentry *dentry, aufs_bindex_t bindex, + struct dentry *h_dentry) +{ + struct au_dinfo *dinfo; + struct au_hdentry *hd; + struct au_branch *br; + + DiMustWriteLock(dentry); + + dinfo = au_di(dentry); + hd = au_hdentry(dinfo, bindex); + au_hdput(hd); + hd->hd_dentry = h_dentry; + if (h_dentry) { + br = au_sbr(dentry->d_sb, bindex); + hd->hd_id = br->br_id; + } +} + +int au_dbrange_test(struct dentry *dentry) +{ + int err; + aufs_bindex_t btop, bbot; + + err = 0; + btop = au_dbtop(dentry); + bbot = au_dbbot(dentry); + if (btop >= 0) + AuDebugOn(bbot < 0 && btop > bbot); + else { + err = -EIO; + AuDebugOn(bbot >= 0); + } + + return err; +} + +int au_digen_test(struct dentry *dentry, unsigned int sigen) +{ + int err; + + err = 0; + if (unlikely(au_digen(dentry) != sigen + || au_iigen_test(d_inode(dentry), sigen))) + err = -EIO; + + return err; +} + +void au_update_digen(struct dentry *dentry) +{ + atomic_set(&au_di(dentry)->di_generation, au_sigen(dentry->d_sb)); + /* smp_mb(); */ /* atomic_set */ +} + +void au_update_dbrange(struct dentry *dentry, int do_put_zero) +{ + struct au_dinfo *dinfo; + struct dentry *h_d; + struct au_hdentry *hdp; + aufs_bindex_t bindex, bbot; + + DiMustWriteLock(dentry); + + dinfo = au_di(dentry); + if (!dinfo || dinfo->di_btop < 0) + return; + + if (do_put_zero) { + bbot = dinfo->di_bbot; + bindex = dinfo->di_btop; + hdp = au_hdentry(dinfo, bindex); + for (; bindex <= bbot; bindex++, hdp++) { + h_d = hdp->hd_dentry; + if (h_d && d_is_negative(h_d)) + au_set_h_dptr(dentry, bindex, NULL); + } + } + + dinfo->di_btop = 0; + hdp = au_hdentry(dinfo, dinfo->di_btop); + for (; dinfo->di_btop <= dinfo->di_bbot; dinfo->di_btop++, hdp++) + if (hdp->hd_dentry) + break; + if (dinfo->di_btop > dinfo->di_bbot) { + dinfo->di_btop = -1; + dinfo->di_bbot = -1; + return; + } + + hdp = au_hdentry(dinfo, dinfo->di_bbot); + for (; dinfo->di_bbot >= 0; dinfo->di_bbot--, hdp--) + if (hdp->hd_dentry) + break; + AuDebugOn(dinfo->di_btop > dinfo->di_bbot || dinfo->di_bbot < 0); +} + +void au_update_dbtop(struct dentry *dentry) +{ + aufs_bindex_t bindex, bbot; + struct dentry *h_dentry; + + bbot = au_dbbot(dentry); + for (bindex = au_dbtop(dentry); bindex <= bbot; bindex++) { + h_dentry = au_h_dptr(dentry, bindex); + if (!h_dentry) + continue; + if (d_is_positive(h_dentry)) { + au_set_dbtop(dentry, bindex); + return; + } + au_set_h_dptr(dentry, bindex, NULL); + } +} + +void au_update_dbbot(struct dentry *dentry) +{ + aufs_bindex_t bindex, btop; + struct dentry *h_dentry; + + btop = au_dbtop(dentry); + for (bindex = au_dbbot(dentry); bindex >= btop; bindex--) { + h_dentry = au_h_dptr(dentry, bindex); + if (!h_dentry) + continue; + if (d_is_positive(h_dentry)) { + au_set_dbbot(dentry, bindex); + return; + } + au_set_h_dptr(dentry, bindex, NULL); + } +} + +int au_find_dbindex(struct dentry *dentry, struct dentry *h_dentry) +{ + aufs_bindex_t bindex, bbot; + + bbot = au_dbbot(dentry); + for (bindex = au_dbtop(dentry); bindex <= bbot; bindex++) + if (au_h_dptr(dentry, bindex) == h_dentry) + return bindex; + return -1; +} diff --git a/include/fs/aufs/dir.c b/include/fs/aufs/dir.c new file mode 100644 index 00000000000..cd9e4aaf63f --- /dev/null +++ b/include/fs/aufs/dir.c @@ -0,0 +1,759 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * directory operations + */ + +#include +#include "aufs.h" + +void au_add_nlink(struct inode *dir, struct inode *h_dir) +{ + unsigned int nlink; + + AuDebugOn(!S_ISDIR(dir->i_mode) || !S_ISDIR(h_dir->i_mode)); + + nlink = dir->i_nlink; + nlink += h_dir->i_nlink - 2; + if (h_dir->i_nlink < 2) + nlink += 2; + smp_mb(); /* for i_nlink */ + /* 0 can happen in revaliding */ + set_nlink(dir, nlink); +} + +void au_sub_nlink(struct inode *dir, struct inode *h_dir) +{ + unsigned int nlink; + + AuDebugOn(!S_ISDIR(dir->i_mode) || !S_ISDIR(h_dir->i_mode)); + + nlink = dir->i_nlink; + nlink -= h_dir->i_nlink - 2; + if (h_dir->i_nlink < 2) + nlink -= 2; + smp_mb(); /* for i_nlink */ + /* nlink == 0 means the branch-fs is broken */ + set_nlink(dir, nlink); +} + +loff_t au_dir_size(struct file *file, struct dentry *dentry) +{ + loff_t sz; + aufs_bindex_t bindex, bbot; + struct file *h_file; + struct dentry *h_dentry; + + sz = 0; + if (file) { + AuDebugOn(!d_is_dir(file->f_path.dentry)); + + bbot = au_fbbot_dir(file); + for (bindex = au_fbtop(file); + bindex <= bbot && sz < KMALLOC_MAX_SIZE; + bindex++) { + h_file = au_hf_dir(file, bindex); + if (h_file && file_inode(h_file)) + sz += vfsub_f_size_read(h_file); + } + } else { + AuDebugOn(!dentry); + AuDebugOn(!d_is_dir(dentry)); + + bbot = au_dbtaildir(dentry); + for (bindex = au_dbtop(dentry); + bindex <= bbot && sz < KMALLOC_MAX_SIZE; + bindex++) { + h_dentry = au_h_dptr(dentry, bindex); + if (h_dentry && d_is_positive(h_dentry)) + sz += i_size_read(d_inode(h_dentry)); + } + } + if (sz < KMALLOC_MAX_SIZE) + sz = roundup_pow_of_two(sz); + if (sz > KMALLOC_MAX_SIZE) + sz = KMALLOC_MAX_SIZE; + else if (sz < NAME_MAX) { + BUILD_BUG_ON(AUFS_RDBLK_DEF < NAME_MAX); + sz = AUFS_RDBLK_DEF; + } + return sz; +} + +struct au_dir_ts_arg { + struct dentry *dentry; + aufs_bindex_t brid; +}; + +static void au_do_dir_ts(void *arg) +{ + struct au_dir_ts_arg *a = arg; + struct au_dtime dt; + struct path h_path; + struct inode *dir, *h_dir; + struct super_block *sb; + struct au_branch *br; + struct au_hinode *hdir; + int err; + aufs_bindex_t btop, bindex; + + sb = a->dentry->d_sb; + if (d_really_is_negative(a->dentry)) + goto out; + /* no dir->i_mutex lock */ + aufs_read_lock(a->dentry, AuLock_DW); /* noflush */ + + dir = d_inode(a->dentry); + btop = au_ibtop(dir); + bindex = au_br_index(sb, a->brid); + if (bindex < btop) + goto out_unlock; + + br = au_sbr(sb, bindex); + h_path.dentry = au_h_dptr(a->dentry, bindex); + if (!h_path.dentry) + goto out_unlock; + h_path.mnt = au_br_mnt(br); + au_dtime_store(&dt, a->dentry, &h_path); + + br = au_sbr(sb, btop); + if (!au_br_writable(br->br_perm)) + goto out_unlock; + h_path.dentry = au_h_dptr(a->dentry, btop); + h_path.mnt = au_br_mnt(br); + err = vfsub_mnt_want_write(h_path.mnt); + if (err) + goto out_unlock; + hdir = au_hi(dir, btop); + au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT); + h_dir = au_h_iptr(dir, btop); + if (h_dir->i_nlink + && timespec_compare(&h_dir->i_mtime, &dt.dt_mtime) < 0) { + dt.dt_h_path = h_path; + au_dtime_revert(&dt); + } + au_hn_inode_unlock(hdir); + vfsub_mnt_drop_write(h_path.mnt); + au_cpup_attr_timesizes(dir); + +out_unlock: + aufs_read_unlock(a->dentry, AuLock_DW); +out: + dput(a->dentry); + au_nwt_done(&au_sbi(sb)->si_nowait); + kfree(arg); +} + +void au_dir_ts(struct inode *dir, aufs_bindex_t bindex) +{ + int perm, wkq_err; + aufs_bindex_t btop; + struct au_dir_ts_arg *arg; + struct dentry *dentry; + struct super_block *sb; + + IMustLock(dir); + + dentry = d_find_any_alias(dir); + AuDebugOn(!dentry); + sb = dentry->d_sb; + btop = au_ibtop(dir); + if (btop == bindex) { + au_cpup_attr_timesizes(dir); + goto out; + } + + perm = au_sbr_perm(sb, btop); + if (!au_br_writable(perm)) + goto out; + + arg = kmalloc(sizeof(*arg), GFP_NOFS); + if (!arg) + goto out; + + arg->dentry = dget(dentry); /* will be dput-ted by au_do_dir_ts() */ + arg->brid = au_sbr_id(sb, bindex); + wkq_err = au_wkq_nowait(au_do_dir_ts, arg, sb, /*flags*/0); + if (unlikely(wkq_err)) { + pr_err("wkq %d\n", wkq_err); + dput(dentry); + kfree(arg); + } + +out: + dput(dentry); +} + +/* ---------------------------------------------------------------------- */ + +static int reopen_dir(struct file *file) +{ + int err; + unsigned int flags; + aufs_bindex_t bindex, btail, btop; + struct dentry *dentry, *h_dentry; + struct file *h_file; + + /* open all lower dirs */ + dentry = file->f_path.dentry; + btop = au_dbtop(dentry); + for (bindex = au_fbtop(file); bindex < btop; bindex++) + au_set_h_fptr(file, bindex, NULL); + au_set_fbtop(file, btop); + + btail = au_dbtaildir(dentry); + for (bindex = au_fbbot_dir(file); btail < bindex; bindex--) + au_set_h_fptr(file, bindex, NULL); + au_set_fbbot_dir(file, btail); + + flags = vfsub_file_flags(file); + for (bindex = btop; bindex <= btail; bindex++) { + h_dentry = au_h_dptr(dentry, bindex); + if (!h_dentry) + continue; + h_file = au_hf_dir(file, bindex); + if (h_file) + continue; + + h_file = au_h_open(dentry, bindex, flags, file, /*force_wr*/0); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; /* close all? */ + au_set_h_fptr(file, bindex, h_file); + } + au_update_figen(file); + /* todo: necessary? */ + /* file->f_ra = h_file->f_ra; */ + err = 0; + +out: + return err; +} + +static int do_open_dir(struct file *file, int flags, struct file *h_file) +{ + int err; + aufs_bindex_t bindex, btail; + struct dentry *dentry, *h_dentry; + struct vfsmount *mnt; + + FiMustWriteLock(file); + AuDebugOn(h_file); + + err = 0; + mnt = file->f_path.mnt; + dentry = file->f_path.dentry; + file->f_version = d_inode(dentry)->i_version; + bindex = au_dbtop(dentry); + au_set_fbtop(file, bindex); + btail = au_dbtaildir(dentry); + au_set_fbbot_dir(file, btail); + for (; !err && bindex <= btail; bindex++) { + h_dentry = au_h_dptr(dentry, bindex); + if (!h_dentry) + continue; + + err = vfsub_test_mntns(mnt, h_dentry->d_sb); + if (unlikely(err)) + break; + h_file = au_h_open(dentry, bindex, flags, file, /*force_wr*/0); + if (IS_ERR(h_file)) { + err = PTR_ERR(h_file); + break; + } + au_set_h_fptr(file, bindex, h_file); + } + au_update_figen(file); + /* todo: necessary? */ + /* file->f_ra = h_file->f_ra; */ + if (!err) + return 0; /* success */ + + /* close all */ + for (bindex = au_fbtop(file); bindex <= btail; bindex++) + au_set_h_fptr(file, bindex, NULL); + au_set_fbtop(file, -1); + au_set_fbbot_dir(file, -1); + + return err; +} + +static int aufs_open_dir(struct inode *inode __maybe_unused, + struct file *file) +{ + int err; + struct super_block *sb; + struct au_fidir *fidir; + + err = -ENOMEM; + sb = file->f_path.dentry->d_sb; + si_read_lock(sb, AuLock_FLUSH); + fidir = au_fidir_alloc(sb); + if (fidir) { + struct au_do_open_args args = { + .open = do_open_dir, + .fidir = fidir + }; + err = au_do_open(file, &args); + if (unlikely(err)) + kfree(fidir); + } + si_read_unlock(sb); + return err; +} + +static int aufs_release_dir(struct inode *inode __maybe_unused, + struct file *file) +{ + struct au_vdir *vdir_cache; + struct au_finfo *finfo; + struct au_fidir *fidir; + struct au_hfile *hf; + aufs_bindex_t bindex, bbot; + + finfo = au_fi(file); + fidir = finfo->fi_hdir; + if (fidir) { + au_hbl_del(&finfo->fi_hlist, + &au_sbi(file->f_path.dentry->d_sb)->si_files); + vdir_cache = fidir->fd_vdir_cache; /* lock-free */ + if (vdir_cache) + au_vdir_free(vdir_cache); + + bindex = finfo->fi_btop; + if (bindex >= 0) { + hf = fidir->fd_hfile + bindex; + /* + * calls fput() instead of filp_close(), + * since no dnotify or lock for the lower file. + */ + bbot = fidir->fd_bbot; + for (; bindex <= bbot; bindex++, hf++) + if (hf->hf_file) + au_hfput(hf, /*execed*/0); + } + kfree(fidir); + finfo->fi_hdir = NULL; + } + au_finfo_fin(file); + return 0; +} + +/* ---------------------------------------------------------------------- */ + +static int au_do_flush_dir(struct file *file, fl_owner_t id) +{ + int err; + aufs_bindex_t bindex, bbot; + struct file *h_file; + + err = 0; + bbot = au_fbbot_dir(file); + for (bindex = au_fbtop(file); !err && bindex <= bbot; bindex++) { + h_file = au_hf_dir(file, bindex); + if (h_file) + err = vfsub_flush(h_file, id); + } + return err; +} + +static int aufs_flush_dir(struct file *file, fl_owner_t id) +{ + return au_do_flush(file, id, au_do_flush_dir); +} + +/* ---------------------------------------------------------------------- */ + +static int au_do_fsync_dir_no_file(struct dentry *dentry, int datasync) +{ + int err; + aufs_bindex_t bbot, bindex; + struct inode *inode; + struct super_block *sb; + + err = 0; + sb = dentry->d_sb; + inode = d_inode(dentry); + IMustLock(inode); + bbot = au_dbbot(dentry); + for (bindex = au_dbtop(dentry); !err && bindex <= bbot; bindex++) { + struct path h_path; + + if (au_test_ro(sb, bindex, inode)) + continue; + h_path.dentry = au_h_dptr(dentry, bindex); + if (!h_path.dentry) + continue; + + h_path.mnt = au_sbr_mnt(sb, bindex); + err = vfsub_fsync(NULL, &h_path, datasync); + } + + return err; +} + +static int au_do_fsync_dir(struct file *file, int datasync) +{ + int err; + aufs_bindex_t bbot, bindex; + struct file *h_file; + struct super_block *sb; + struct inode *inode; + + err = au_reval_and_lock_fdi(file, reopen_dir, /*wlock*/1, /*fi_lsc*/0); + if (unlikely(err)) + goto out; + + inode = file_inode(file); + sb = inode->i_sb; + bbot = au_fbbot_dir(file); + for (bindex = au_fbtop(file); !err && bindex <= bbot; bindex++) { + h_file = au_hf_dir(file, bindex); + if (!h_file || au_test_ro(sb, bindex, inode)) + continue; + + err = vfsub_fsync(h_file, &h_file->f_path, datasync); + } + +out: + return err; +} + +/* + * @file may be NULL + */ +static int aufs_fsync_dir(struct file *file, loff_t start, loff_t end, + int datasync) +{ + int err; + struct dentry *dentry; + struct inode *inode; + struct super_block *sb; + + err = 0; + dentry = file->f_path.dentry; + inode = d_inode(dentry); + inode_lock(inode); + sb = dentry->d_sb; + si_noflush_read_lock(sb); + if (file) + err = au_do_fsync_dir(file, datasync); + else { + di_write_lock_child(dentry); + err = au_do_fsync_dir_no_file(dentry, datasync); + } + au_cpup_attr_timesizes(inode); + di_write_unlock(dentry); + if (file) + fi_write_unlock(file); + + si_read_unlock(sb); + inode_unlock(inode); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int aufs_iterate_shared(struct file *file, struct dir_context *ctx) +{ + int err; + struct dentry *dentry; + struct inode *inode, *h_inode; + struct super_block *sb; + + AuDbg("%pD, ctx{%pf, %llu}\n", file, ctx->actor, ctx->pos); + + dentry = file->f_path.dentry; + inode = d_inode(dentry); + IMustLock(inode); + + sb = dentry->d_sb; + si_read_lock(sb, AuLock_FLUSH); + err = au_reval_and_lock_fdi(file, reopen_dir, /*wlock*/1, /*fi_lsc*/0); + if (unlikely(err)) + goto out; + err = au_alive_dir(dentry); + if (!err) + err = au_vdir_init(file); + di_downgrade_lock(dentry, AuLock_IR); + if (unlikely(err)) + goto out_unlock; + + h_inode = au_h_iptr(inode, au_ibtop(inode)); + if (!au_test_nfsd()) { + err = au_vdir_fill_de(file, ctx); + fsstack_copy_attr_atime(inode, h_inode); + } else { + /* + * nfsd filldir may call lookup_one_len(), vfs_getattr(), + * encode_fh() and others. + */ + atomic_inc(&h_inode->i_count); + di_read_unlock(dentry, AuLock_IR); + si_read_unlock(sb); + err = au_vdir_fill_de(file, ctx); + fsstack_copy_attr_atime(inode, h_inode); + fi_write_unlock(file); + iput(h_inode); + + AuTraceErr(err); + return err; + } + +out_unlock: + di_read_unlock(dentry, AuLock_IR); + fi_write_unlock(file); +out: + si_read_unlock(sb); + return err; +} + +/* ---------------------------------------------------------------------- */ + +#define AuTestEmpty_WHONLY 1 +#define AuTestEmpty_CALLED (1 << 1) +#define AuTestEmpty_SHWH (1 << 2) +#define au_ftest_testempty(flags, name) ((flags) & AuTestEmpty_##name) +#define au_fset_testempty(flags, name) \ + do { (flags) |= AuTestEmpty_##name; } while (0) +#define au_fclr_testempty(flags, name) \ + do { (flags) &= ~AuTestEmpty_##name; } while (0) + +#ifndef CONFIG_AUFS_SHWH +#undef AuTestEmpty_SHWH +#define AuTestEmpty_SHWH 0 +#endif + +struct test_empty_arg { + struct dir_context ctx; + struct au_nhash *whlist; + unsigned int flags; + int err; + aufs_bindex_t bindex; +}; + +static int test_empty_cb(struct dir_context *ctx, const char *__name, + int namelen, loff_t offset __maybe_unused, u64 ino, + unsigned int d_type) +{ + struct test_empty_arg *arg = container_of(ctx, struct test_empty_arg, + ctx); + char *name = (void *)__name; + + arg->err = 0; + au_fset_testempty(arg->flags, CALLED); + /* smp_mb(); */ + if (name[0] == '.' + && (namelen == 1 || (name[1] == '.' && namelen == 2))) + goto out; /* success */ + + if (namelen <= AUFS_WH_PFX_LEN + || memcmp(name, AUFS_WH_PFX, AUFS_WH_PFX_LEN)) { + if (au_ftest_testempty(arg->flags, WHONLY) + && !au_nhash_test_known_wh(arg->whlist, name, namelen)) + arg->err = -ENOTEMPTY; + goto out; + } + + name += AUFS_WH_PFX_LEN; + namelen -= AUFS_WH_PFX_LEN; + if (!au_nhash_test_known_wh(arg->whlist, name, namelen)) + arg->err = au_nhash_append_wh + (arg->whlist, name, namelen, ino, d_type, arg->bindex, + au_ftest_testempty(arg->flags, SHWH)); + +out: + /* smp_mb(); */ + AuTraceErr(arg->err); + return arg->err; +} + +static int do_test_empty(struct dentry *dentry, struct test_empty_arg *arg) +{ + int err; + struct file *h_file; + + h_file = au_h_open(dentry, arg->bindex, + O_RDONLY | O_NONBLOCK | O_DIRECTORY | O_LARGEFILE, + /*file*/NULL, /*force_wr*/0); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + err = 0; + if (!au_opt_test(au_mntflags(dentry->d_sb), UDBA_NONE) + && !file_inode(h_file)->i_nlink) + goto out_put; + + do { + arg->err = 0; + au_fclr_testempty(arg->flags, CALLED); + /* smp_mb(); */ + err = vfsub_iterate_dir(h_file, &arg->ctx); + if (err >= 0) + err = arg->err; + } while (!err && au_ftest_testempty(arg->flags, CALLED)); + +out_put: + fput(h_file); + au_sbr_put(dentry->d_sb, arg->bindex); +out: + return err; +} + +struct do_test_empty_args { + int *errp; + struct dentry *dentry; + struct test_empty_arg *arg; +}; + +static void call_do_test_empty(void *args) +{ + struct do_test_empty_args *a = args; + *a->errp = do_test_empty(a->dentry, a->arg); +} + +static int sio_test_empty(struct dentry *dentry, struct test_empty_arg *arg) +{ + int err, wkq_err; + struct dentry *h_dentry; + struct inode *h_inode; + + h_dentry = au_h_dptr(dentry, arg->bindex); + h_inode = d_inode(h_dentry); + /* todo: i_mode changes anytime? */ + vfsub_inode_lock_shared_nested(h_inode, AuLsc_I_CHILD); + err = au_test_h_perm_sio(h_inode, MAY_EXEC | MAY_READ); + inode_unlock_shared(h_inode); + if (!err) + err = do_test_empty(dentry, arg); + else { + struct do_test_empty_args args = { + .errp = &err, + .dentry = dentry, + .arg = arg + }; + unsigned int flags = arg->flags; + + wkq_err = au_wkq_wait(call_do_test_empty, &args); + if (unlikely(wkq_err)) + err = wkq_err; + arg->flags = flags; + } + + return err; +} + +int au_test_empty_lower(struct dentry *dentry) +{ + int err; + unsigned int rdhash; + aufs_bindex_t bindex, btop, btail; + struct au_nhash whlist; + struct test_empty_arg arg = { + .ctx = { + .actor = test_empty_cb + } + }; + int (*test_empty)(struct dentry *dentry, struct test_empty_arg *arg); + + SiMustAnyLock(dentry->d_sb); + + rdhash = au_sbi(dentry->d_sb)->si_rdhash; + if (!rdhash) + rdhash = au_rdhash_est(au_dir_size(/*file*/NULL, dentry)); + err = au_nhash_alloc(&whlist, rdhash, GFP_NOFS); + if (unlikely(err)) + goto out; + + arg.flags = 0; + arg.whlist = &whlist; + btop = au_dbtop(dentry); + if (au_opt_test(au_mntflags(dentry->d_sb), SHWH)) + au_fset_testempty(arg.flags, SHWH); + test_empty = do_test_empty; + if (au_opt_test(au_mntflags(dentry->d_sb), DIRPERM1)) + test_empty = sio_test_empty; + arg.bindex = btop; + err = test_empty(dentry, &arg); + if (unlikely(err)) + goto out_whlist; + + au_fset_testempty(arg.flags, WHONLY); + btail = au_dbtaildir(dentry); + for (bindex = btop + 1; !err && bindex <= btail; bindex++) { + struct dentry *h_dentry; + + h_dentry = au_h_dptr(dentry, bindex); + if (h_dentry && d_is_positive(h_dentry)) { + arg.bindex = bindex; + err = test_empty(dentry, &arg); + } + } + +out_whlist: + au_nhash_wh_free(&whlist); +out: + return err; +} + +int au_test_empty(struct dentry *dentry, struct au_nhash *whlist) +{ + int err; + struct test_empty_arg arg = { + .ctx = { + .actor = test_empty_cb + } + }; + aufs_bindex_t bindex, btail; + + err = 0; + arg.whlist = whlist; + arg.flags = AuTestEmpty_WHONLY; + if (au_opt_test(au_mntflags(dentry->d_sb), SHWH)) + au_fset_testempty(arg.flags, SHWH); + btail = au_dbtaildir(dentry); + for (bindex = au_dbtop(dentry); !err && bindex <= btail; bindex++) { + struct dentry *h_dentry; + + h_dentry = au_h_dptr(dentry, bindex); + if (h_dentry && d_is_positive(h_dentry)) { + arg.bindex = bindex; + err = sio_test_empty(dentry, &arg); + } + } + + return err; +} + +/* ---------------------------------------------------------------------- */ + +const struct file_operations aufs_dir_fop = { + .owner = THIS_MODULE, + .llseek = default_llseek, + .read = generic_read_dir, + .iterate_shared = aufs_iterate_shared, + .unlocked_ioctl = aufs_ioctl_dir, +#ifdef CONFIG_COMPAT + .compat_ioctl = aufs_compat_ioctl_dir, +#endif + .open = aufs_open_dir, + .release = aufs_release_dir, + .flush = aufs_flush_dir, + .fsync = aufs_fsync_dir +}; diff --git a/include/fs/aufs/dir.h b/include/fs/aufs/dir.h new file mode 100644 index 00000000000..ece11af43d2 --- /dev/null +++ b/include/fs/aufs/dir.h @@ -0,0 +1,131 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * directory operations + */ + +#ifndef __AUFS_DIR_H__ +#define __AUFS_DIR_H__ + +#ifdef __KERNEL__ + +#include + +/* ---------------------------------------------------------------------- */ + +/* need to be faster and smaller */ + +struct au_nhash { + unsigned int nh_num; + struct hlist_head *nh_head; +}; + +struct au_vdir_destr { + unsigned char len; + unsigned char name[0]; +} __packed; + +struct au_vdir_dehstr { + struct hlist_node hash; + struct au_vdir_destr *str; +} ____cacheline_aligned_in_smp; + +struct au_vdir_de { + ino_t de_ino; + unsigned char de_type; + /* caution: packed */ + struct au_vdir_destr de_str; +} __packed; + +struct au_vdir_wh { + struct hlist_node wh_hash; +#ifdef CONFIG_AUFS_SHWH + ino_t wh_ino; + aufs_bindex_t wh_bindex; + unsigned char wh_type; +#else + aufs_bindex_t wh_bindex; +#endif + /* caution: packed */ + struct au_vdir_destr wh_str; +} __packed; + +union au_vdir_deblk_p { + unsigned char *deblk; + struct au_vdir_de *de; +}; + +struct au_vdir { + unsigned char **vd_deblk; + unsigned long vd_nblk; + struct { + unsigned long ul; + union au_vdir_deblk_p p; + } vd_last; + + unsigned long vd_version; + unsigned int vd_deblk_sz; + unsigned long vd_jiffy; +} ____cacheline_aligned_in_smp; + +/* ---------------------------------------------------------------------- */ + +/* dir.c */ +extern const struct file_operations aufs_dir_fop; +void au_add_nlink(struct inode *dir, struct inode *h_dir); +void au_sub_nlink(struct inode *dir, struct inode *h_dir); +loff_t au_dir_size(struct file *file, struct dentry *dentry); +void au_dir_ts(struct inode *dir, aufs_bindex_t bsrc); +int au_test_empty_lower(struct dentry *dentry); +int au_test_empty(struct dentry *dentry, struct au_nhash *whlist); + +/* vdir.c */ +unsigned int au_rdhash_est(loff_t sz); +int au_nhash_alloc(struct au_nhash *nhash, unsigned int num_hash, gfp_t gfp); +void au_nhash_wh_free(struct au_nhash *whlist); +int au_nhash_test_longer_wh(struct au_nhash *whlist, aufs_bindex_t btgt, + int limit); +int au_nhash_test_known_wh(struct au_nhash *whlist, char *name, int nlen); +int au_nhash_append_wh(struct au_nhash *whlist, char *name, int nlen, ino_t ino, + unsigned int d_type, aufs_bindex_t bindex, + unsigned char shwh); +void au_vdir_free(struct au_vdir *vdir); +int au_vdir_init(struct file *file); +int au_vdir_fill_de(struct file *file, struct dir_context *ctx); + +/* ioctl.c */ +long aufs_ioctl_dir(struct file *file, unsigned int cmd, unsigned long arg); + +#ifdef CONFIG_AUFS_RDU +/* rdu.c */ +long au_rdu_ioctl(struct file *file, unsigned int cmd, unsigned long arg); +#ifdef CONFIG_COMPAT +long au_rdu_compat_ioctl(struct file *file, unsigned int cmd, + unsigned long arg); +#endif +#else +AuStub(long, au_rdu_ioctl, return -EINVAL, struct file *file, + unsigned int cmd, unsigned long arg) +#ifdef CONFIG_COMPAT +AuStub(long, au_rdu_compat_ioctl, return -EINVAL, struct file *file, + unsigned int cmd, unsigned long arg) +#endif +#endif + +#endif /* __KERNEL__ */ +#endif /* __AUFS_DIR_H__ */ diff --git a/include/fs/aufs/dirren.c b/include/fs/aufs/dirren.c new file mode 100644 index 00000000000..14a3621dc7a --- /dev/null +++ b/include/fs/aufs/dirren.c @@ -0,0 +1,1315 @@ +/* + * Copyright (C) 2017-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * special handling in renaming a directoy + * in order to support looking-up the before-renamed name on the lower readonly + * branches + */ + +#include +#include "aufs.h" + +static void au_dr_hino_del(struct au_dr_br *dr, struct au_dr_hino *ent) +{ + int idx; + + idx = au_dr_ihash(ent->dr_h_ino); + au_hbl_del(&ent->dr_hnode, dr->dr_h_ino + idx); +} + +static int au_dr_hino_test_empty(struct au_dr_br *dr) +{ + int ret, i; + struct hlist_bl_head *hbl; + + ret = 1; + for (i = 0; ret && i < AuDirren_NHASH; i++) { + hbl = dr->dr_h_ino + i; + hlist_bl_lock(hbl); + ret &= hlist_bl_empty(hbl); + hlist_bl_unlock(hbl); + } + + return ret; +} + +static struct au_dr_hino *au_dr_hino_find(struct au_dr_br *dr, ino_t ino) +{ + struct au_dr_hino *found, *ent; + struct hlist_bl_head *hbl; + struct hlist_bl_node *pos; + int idx; + + found = NULL; + idx = au_dr_ihash(ino); + hbl = dr->dr_h_ino + idx; + hlist_bl_lock(hbl); + hlist_bl_for_each_entry(ent, pos, hbl, dr_hnode) + if (ent->dr_h_ino == ino) { + found = ent; + break; + } + hlist_bl_unlock(hbl); + + return found; +} + +int au_dr_hino_test_add(struct au_dr_br *dr, ino_t ino, + struct au_dr_hino *add_ent) +{ + int found, idx; + struct hlist_bl_head *hbl; + struct hlist_bl_node *pos; + struct au_dr_hino *ent; + + found = 0; + idx = au_dr_ihash(ino); + hbl = dr->dr_h_ino + idx; +#if 0 + { + struct hlist_bl_node *tmp; + + hlist_bl_for_each_entry_safe(ent, pos, tmp, hbl, dr_hnode) + AuDbg("hi%llu\n", (unsigned long long)ent->dr_h_ino); + } +#endif + hlist_bl_lock(hbl); + hlist_bl_for_each_entry(ent, pos, hbl, dr_hnode) + if (ent->dr_h_ino == ino) { + found = 1; + break; + } + if (!found && add_ent) + hlist_bl_add_head(&add_ent->dr_hnode, hbl); + hlist_bl_unlock(hbl); + + if (!found && add_ent) + AuDbg("i%llu added\n", (unsigned long long)add_ent->dr_h_ino); + + return found; +} + +void au_dr_hino_free(struct au_dr_br *dr) +{ + int i; + struct hlist_bl_head *hbl; + struct hlist_bl_node *pos, *tmp; + struct au_dr_hino *ent; + + /* SiMustWriteLock(sb); */ + + for (i = 0; i < AuDirren_NHASH; i++) { + hbl = dr->dr_h_ino + i; + /* no spinlock since sbinfo must be write-locked */ + hlist_bl_for_each_entry_safe(ent, pos, tmp, hbl, dr_hnode) + kfree(ent); + INIT_HLIST_BL_HEAD(hbl); + } +} + +/* returns the number of inodes or an error */ +static int au_dr_hino_store(struct super_block *sb, struct au_branch *br, + struct file *hinofile) +{ + int err, i; + ssize_t ssz; + loff_t pos, oldsize; + __be64 u64; + struct inode *hinoinode; + struct hlist_bl_head *hbl; + struct hlist_bl_node *n1, *n2; + struct au_dr_hino *ent; + + SiMustWriteLock(sb); + AuDebugOn(!au_br_writable(br->br_perm)); + + hinoinode = file_inode(hinofile); + oldsize = i_size_read(hinoinode); + + err = 0; + pos = 0; + hbl = br->br_dirren.dr_h_ino; + for (i = 0; !err && i < AuDirren_NHASH; i++, hbl++) { + /* no bit-lock since sbinfo must be write-locked */ + hlist_bl_for_each_entry_safe(ent, n1, n2, hbl, dr_hnode) { + AuDbg("hi%llu, %pD2\n", + (unsigned long long)ent->dr_h_ino, hinofile); + u64 = cpu_to_be64(ent->dr_h_ino); + ssz = vfsub_write_k(hinofile, &u64, sizeof(u64), &pos); + if (ssz == sizeof(u64)) + continue; + + /* write error */ + pr_err("ssz %zd, %pD2\n", ssz, hinofile); + err = -ENOSPC; + if (ssz < 0) + err = ssz; + break; + } + } + /* regardless the error */ + if (pos < oldsize) { + err = vfsub_trunc(&hinofile->f_path, pos, /*attr*/0, hinofile); + AuTraceErr(err); + } + + AuTraceErr(err); + return err; +} + +static int au_dr_hino_load(struct au_dr_br *dr, struct file *hinofile) +{ + int err, hidx; + ssize_t ssz; + size_t sz, n; + loff_t pos; + uint64_t u64; + struct au_dr_hino *ent; + struct inode *hinoinode; + struct hlist_bl_head *hbl; + + err = 0; + pos = 0; + hbl = dr->dr_h_ino; + hinoinode = file_inode(hinofile); + sz = i_size_read(hinoinode); + AuDebugOn(sz % sizeof(u64)); + n = sz / sizeof(u64); + while (n--) { + ssz = vfsub_read_k(hinofile, &u64, sizeof(u64), &pos); + if (unlikely(ssz != sizeof(u64))) { + pr_err("ssz %zd, %pD2\n", ssz, hinofile); + err = -EINVAL; + if (ssz < 0) + err = ssz; + goto out_free; + } + + ent = kmalloc(sizeof(*ent), GFP_NOFS); + if (!ent) { + err = -ENOMEM; + AuTraceErr(err); + goto out_free; + } + ent->dr_h_ino = be64_to_cpu((__force __be64)u64); + AuDbg("hi%llu, %pD2\n", + (unsigned long long)ent->dr_h_ino, hinofile); + hidx = au_dr_ihash(ent->dr_h_ino); + au_hbl_add(&ent->dr_hnode, hbl + hidx); + } + goto out; /* success */ + +out_free: + au_dr_hino_free(dr); +out: + AuTraceErr(err); + return err; +} + +/* + * @bindex/@br is a switch to distinguish whether suspending hnotify or not. + * @path is a switch to distinguish load and store. + */ +static int au_dr_hino(struct super_block *sb, aufs_bindex_t bindex, + struct au_branch *br, const struct path *path) +{ + int err, flags; + unsigned char load, suspend; + struct file *hinofile; + struct au_hinode *hdir; + struct inode *dir, *delegated; + struct path hinopath; + struct qstr hinoname = QSTR_INIT(AUFS_WH_DR_BRHINO, + sizeof(AUFS_WH_DR_BRHINO) - 1); + + AuDebugOn(bindex < 0 && !br); + AuDebugOn(bindex >= 0 && br); + + err = -EINVAL; + suspend = !br; + if (suspend) + br = au_sbr(sb, bindex); + load = !!path; + if (!load) { + path = &br->br_path; + AuDebugOn(!au_br_writable(br->br_perm)); + if (unlikely(!au_br_writable(br->br_perm))) + goto out; + } + + hdir = NULL; + if (suspend) { + dir = d_inode(sb->s_root); + hdir = au_hinode(au_ii(dir), bindex); + dir = hdir->hi_inode; + au_hn_inode_lock_nested(hdir, AuLsc_I_CHILD); + } else { + dir = d_inode(path->dentry); + inode_lock_nested(dir, AuLsc_I_CHILD); + } + hinopath.dentry = vfsub_lkup_one(&hinoname, path->dentry); + err = PTR_ERR(hinopath.dentry); + if (IS_ERR(hinopath.dentry)) + goto out_unlock; + + err = 0; + flags = O_RDONLY; + if (load) { + if (d_is_negative(hinopath.dentry)) + goto out_dput; /* success */ + } else { + if (au_dr_hino_test_empty(&br->br_dirren)) { + if (d_is_positive(hinopath.dentry)) { + delegated = NULL; + err = vfsub_unlink(dir, &hinopath, &delegated, + /*force*/0); + AuTraceErr(err); + if (unlikely(err)) + pr_err("ignored err %d, %pd2\n", + err, hinopath.dentry); + if (unlikely(err == -EWOULDBLOCK)) + iput(delegated); + err = 0; + } + goto out_dput; + } else if (!d_is_positive(hinopath.dentry)) { + err = vfsub_create(dir, &hinopath, 0600, + /*want_excl*/false); + AuTraceErr(err); + if (unlikely(err)) + goto out_dput; + } + flags = O_WRONLY; + } + hinopath.mnt = path->mnt; + hinofile = vfsub_dentry_open(&hinopath, flags); + if (suspend) + au_hn_inode_unlock(hdir); + else + inode_unlock(dir); + dput(hinopath.dentry); + AuTraceErrPtr(hinofile); + if (IS_ERR(hinofile)) { + err = PTR_ERR(hinofile); + goto out; + } + + if (load) + err = au_dr_hino_load(&br->br_dirren, hinofile); + else + err = au_dr_hino_store(sb, br, hinofile); + fput(hinofile); + goto out; + +out_dput: + dput(hinopath.dentry); +out_unlock: + if (suspend) + au_hn_inode_unlock(hdir); + else + inode_unlock(dir); +out: + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int au_dr_brid_init(struct au_dr_brid *brid, const struct path *path) +{ + int err; + struct kstatfs kstfs; + dev_t dev; + struct dentry *dentry; + struct super_block *sb; + + err = vfs_statfs((void *)path, &kstfs); + AuTraceErr(err); + if (unlikely(err)) + goto out; + + /* todo: support for UUID */ + + if (kstfs.f_fsid.val[0] || kstfs.f_fsid.val[1]) { + brid->type = AuBrid_FSID; + brid->fsid = kstfs.f_fsid; + } else { + dentry = path->dentry; + sb = dentry->d_sb; + dev = sb->s_dev; + if (dev) { + brid->type = AuBrid_DEV; + brid->dev = dev; + } + } + +out: + return err; +} + +int au_dr_br_init(struct super_block *sb, struct au_branch *br, + const struct path *path) +{ + int err, i; + struct au_dr_br *dr; + struct hlist_bl_head *hbl; + + dr = &br->br_dirren; + hbl = dr->dr_h_ino; + for (i = 0; i < AuDirren_NHASH; i++, hbl++) + INIT_HLIST_BL_HEAD(hbl); + + err = au_dr_brid_init(&dr->dr_brid, path); + if (unlikely(err)) + goto out; + + if (au_opt_test(au_mntflags(sb), DIRREN)) + err = au_dr_hino(sb, /*bindex*/-1, br, path); + +out: + AuTraceErr(err); + return err; +} + +int au_dr_br_fin(struct super_block *sb, struct au_branch *br) +{ + int err; + + err = 0; + if (au_br_writable(br->br_perm)) + err = au_dr_hino(sb, /*bindex*/-1, br, /*path*/NULL); + if (!err) + au_dr_hino_free(&br->br_dirren); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int au_brid_str(struct au_dr_brid *brid, struct inode *h_inode, + char *buf, size_t sz) +{ + int err; + unsigned int major, minor; + char *p; + + p = buf; + err = snprintf(p, sz, "%d_", brid->type); + AuDebugOn(err > sz); + p += err; + sz -= err; + switch (brid->type) { + case AuBrid_Unset: + return -EINVAL; + case AuBrid_UUID: + err = snprintf(p, sz, "%pU", brid->uuid.b); + break; + case AuBrid_FSID: + err = snprintf(p, sz, "%08x-%08x", + brid->fsid.val[0], brid->fsid.val[1]); + break; + case AuBrid_DEV: + major = MAJOR(brid->dev); + minor = MINOR(brid->dev); + if (major <= 0xff && minor <= 0xff) + err = snprintf(p, sz, "%02x%02x", major, minor); + else + err = snprintf(p, sz, "%03x:%05x", major, minor); + break; + } + AuDebugOn(err > sz); + p += err; + sz -= err; + err = snprintf(p, sz, "_%llu", (unsigned long long)h_inode->i_ino); + AuDebugOn(err > sz); + p += err; + sz -= err; + + return p - buf; +} + +static int au_drinfo_name(struct au_branch *br, char *name, int len) +{ + int rlen; + struct dentry *br_dentry; + struct inode *br_inode; + + br_dentry = au_br_dentry(br); + br_inode = d_inode(br_dentry); + rlen = au_brid_str(&br->br_dirren.dr_brid, br_inode, name, len); + AuDebugOn(rlen >= AUFS_DIRREN_ENV_VAL_SZ); + AuDebugOn(rlen > len); + + return rlen; +} + +/* ---------------------------------------------------------------------- */ + +/* + * from the given @h_dentry, construct drinfo at @*fdata. + * when the size of @*fdata is not enough, reallocate and return new @fdata and + * @allocated. + */ +static int au_drinfo_construct(struct au_drinfo_fdata **fdata, + struct dentry *h_dentry, + unsigned char *allocated) +{ + int err, v; + struct au_drinfo_fdata *f, *p; + struct au_drinfo *drinfo; + struct inode *h_inode; + struct qstr *qname; + + err = 0; + f = *fdata; + h_inode = d_inode(h_dentry); + qname = &h_dentry->d_name; + drinfo = &f->drinfo; + drinfo->ino = (__force uint64_t)cpu_to_be64(h_inode->i_ino); + drinfo->oldnamelen = qname->len; + if (*allocated < sizeof(*f) + qname->len) { + v = roundup_pow_of_two(*allocated + qname->len); + p = au_krealloc(f, v, GFP_NOFS, /*may_shrink*/0); + if (unlikely(!p)) { + err = -ENOMEM; + AuTraceErr(err); + goto out; + } + f = p; + *fdata = f; + *allocated = v; + drinfo = &f->drinfo; + } + memcpy(drinfo->oldname, qname->name, qname->len); + AuDbg("i%llu, %.*s\n", + be64_to_cpu((__force __be64)drinfo->ino), drinfo->oldnamelen, + drinfo->oldname); + +out: + AuTraceErr(err); + return err; +} + +/* callers have to free the return value */ +static struct au_drinfo *au_drinfo_read_k(struct file *file, ino_t h_ino) +{ + struct au_drinfo *ret, *drinfo; + struct au_drinfo_fdata fdata; + int len; + loff_t pos; + ssize_t ssz; + + ret = ERR_PTR(-EIO); + pos = 0; + ssz = vfsub_read_k(file, &fdata, sizeof(fdata), &pos); + if (unlikely(ssz != sizeof(fdata))) { + AuIOErr("ssz %zd, %u, %pD2\n", + ssz, (unsigned int)sizeof(fdata), file); + goto out; + } + + fdata.magic = ntohl((__force __be32)fdata.magic); + switch (fdata.magic) { + case AUFS_DRINFO_MAGIC_V1: + break; + default: + AuIOErr("magic-num 0x%x, 0x%x, %pD2\n", + fdata.magic, AUFS_DRINFO_MAGIC_V1, file); + goto out; + } + + drinfo = &fdata.drinfo; + len = drinfo->oldnamelen; + if (!len) { + AuIOErr("broken drinfo %pD2\n", file); + goto out; + } + + ret = NULL; + drinfo->ino = be64_to_cpu((__force __be64)drinfo->ino); + if (unlikely(h_ino && drinfo->ino != h_ino)) { + AuDbg("ignored i%llu, i%llu, %pD2\n", + (unsigned long long)drinfo->ino, + (unsigned long long)h_ino, file); + goto out; /* success */ + } + + ret = kmalloc(sizeof(*ret) + len, GFP_NOFS); + if (unlikely(!ret)) { + ret = ERR_PTR(-ENOMEM); + AuTraceErrPtr(ret); + goto out; + } + + *ret = *drinfo; + ssz = vfsub_read_k(file, (void *)ret->oldname, len, &pos); + if (unlikely(ssz != len)) { + kfree(ret); + ret = ERR_PTR(-EIO); + AuIOErr("ssz %zd, %u, %pD2\n", ssz, len, file); + goto out; + } + + AuDbg("oldname %.*s\n", ret->oldnamelen, ret->oldname); + +out: + return ret; +} + +/* ---------------------------------------------------------------------- */ + +/* in order to be revertible */ +struct au_drinfo_rev_elm { + int created; + struct dentry *info_dentry; + struct au_drinfo *info_last; +}; + +struct au_drinfo_rev { + unsigned char already; + aufs_bindex_t nelm; + struct au_drinfo_rev_elm elm[0]; +}; + +/* todo: isn't it too large? */ +struct au_drinfo_store { + struct path h_ppath; + struct dentry *h_dentry; + struct au_drinfo_fdata *fdata; + char *infoname; /* inside of whname, just after PFX */ + char whname[sizeof(AUFS_WH_DR_INFO_PFX) + AUFS_DIRREN_ENV_VAL_SZ]; + aufs_bindex_t btgt, btail; + unsigned char no_sio, + allocated, /* current size of *fdata */ + infonamelen, /* room size for p */ + whnamelen, /* length of the genarated name */ + renameback; /* renamed back */ +}; + +/* on rename(2) error, the caller should revert it using @elm */ +static int au_drinfo_do_store(struct au_drinfo_store *w, + struct au_drinfo_rev_elm *elm) +{ + int err, len; + ssize_t ssz; + loff_t pos; + struct path infopath = { + .mnt = w->h_ppath.mnt + }; + struct inode *h_dir, *h_inode, *delegated; + struct file *infofile; + struct qstr *qname; + + AuDebugOn(elm + && memcmp(elm, page_address(ZERO_PAGE(0)), sizeof(*elm))); + + infopath.dentry = vfsub_lookup_one_len(w->whname, w->h_ppath.dentry, + w->whnamelen); + AuTraceErrPtr(infopath.dentry); + if (IS_ERR(infopath.dentry)) { + err = PTR_ERR(infopath.dentry); + goto out; + } + + err = 0; + h_dir = d_inode(w->h_ppath.dentry); + if (elm && d_is_negative(infopath.dentry)) { + err = vfsub_create(h_dir, &infopath, 0600, /*want_excl*/true); + AuTraceErr(err); + if (unlikely(err)) + goto out_dput; + elm->created = 1; + elm->info_dentry = dget(infopath.dentry); + } + + infofile = vfsub_dentry_open(&infopath, O_RDWR); + AuTraceErrPtr(infofile); + if (IS_ERR(infofile)) { + err = PTR_ERR(infofile); + goto out_dput; + } + + h_inode = d_inode(infopath.dentry); + if (elm && i_size_read(h_inode)) { + h_inode = d_inode(w->h_dentry); + elm->info_last = au_drinfo_read_k(infofile, h_inode->i_ino); + AuTraceErrPtr(elm->info_last); + if (IS_ERR(elm->info_last)) { + err = PTR_ERR(elm->info_last); + elm->info_last = NULL; + AuDebugOn(elm->info_dentry); + goto out_fput; + } + } + + if (elm && w->renameback) { + delegated = NULL; + err = vfsub_unlink(h_dir, &infopath, &delegated, /*force*/0); + AuTraceErr(err); + if (unlikely(err == -EWOULDBLOCK)) + iput(delegated); + goto out_fput; + } + + pos = 0; + qname = &w->h_dentry->d_name; + len = sizeof(*w->fdata) + qname->len; + if (!elm) + len = sizeof(*w->fdata) + w->fdata->drinfo.oldnamelen; + ssz = vfsub_write_k(infofile, w->fdata, len, &pos); + if (ssz == len) { + AuDbg("hi%llu, %.*s\n", w->fdata->drinfo.ino, + w->fdata->drinfo.oldnamelen, w->fdata->drinfo.oldname); + goto out_fput; /* success */ + } else { + err = -EIO; + if (ssz < 0) + err = ssz; + /* the caller should revert it using @elm */ + } + +out_fput: + fput(infofile); +out_dput: + dput(infopath.dentry); +out: + AuTraceErr(err); + return err; +} + +struct au_call_drinfo_do_store_args { + int *errp; + struct au_drinfo_store *w; + struct au_drinfo_rev_elm *elm; +}; + +static void au_call_drinfo_do_store(void *args) +{ + struct au_call_drinfo_do_store_args *a = args; + + *a->errp = au_drinfo_do_store(a->w, a->elm); +} + +static int au_drinfo_store_sio(struct au_drinfo_store *w, + struct au_drinfo_rev_elm *elm) +{ + int err, wkq_err; + + if (w->no_sio) + err = au_drinfo_do_store(w, elm); + else { + struct au_call_drinfo_do_store_args a = { + .errp = &err, + .w = w, + .elm = elm + }; + wkq_err = au_wkq_wait(au_call_drinfo_do_store, &a); + if (unlikely(wkq_err)) + err = wkq_err; + } + AuTraceErr(err); + + return err; +} + +static int au_drinfo_store_work_init(struct au_drinfo_store *w, + aufs_bindex_t btgt) +{ + int err; + + memset(w, 0, sizeof(*w)); + w->allocated = roundup_pow_of_two(sizeof(*w->fdata) + 40); + strcpy(w->whname, AUFS_WH_DR_INFO_PFX); + w->infoname = w->whname + sizeof(AUFS_WH_DR_INFO_PFX) - 1; + w->infonamelen = sizeof(w->whname) - sizeof(AUFS_WH_DR_INFO_PFX); + w->btgt = btgt; + w->no_sio = !!uid_eq(current_fsuid(), GLOBAL_ROOT_UID); + + err = -ENOMEM; + w->fdata = kcalloc(1, w->allocated, GFP_NOFS); + if (unlikely(!w->fdata)) { + AuTraceErr(err); + goto out; + } + w->fdata->magic = (__force uint32_t)htonl(AUFS_DRINFO_MAGIC_V1); + err = 0; + +out: + return err; +} + +static void au_drinfo_store_work_fin(struct au_drinfo_store *w) +{ + kfree(w->fdata); +} + +static void au_drinfo_store_rev(struct au_drinfo_rev *rev, + struct au_drinfo_store *w) +{ + struct au_drinfo_rev_elm *elm; + struct inode *h_dir, *delegated; + int err, nelm; + struct path infopath = { + .mnt = w->h_ppath.mnt + }; + + h_dir = d_inode(w->h_ppath.dentry); + IMustLock(h_dir); + + err = 0; + elm = rev->elm; + for (nelm = rev->nelm; nelm > 0; nelm--, elm++) { + AuDebugOn(elm->created && elm->info_last); + if (elm->created) { + AuDbg("here\n"); + delegated = NULL; + infopath.dentry = elm->info_dentry; + err = vfsub_unlink(h_dir, &infopath, &delegated, + !w->no_sio); + AuTraceErr(err); + if (unlikely(err == -EWOULDBLOCK)) + iput(delegated); + dput(elm->info_dentry); + } else if (elm->info_last) { + AuDbg("here\n"); + w->fdata->drinfo = *elm->info_last; + memcpy(w->fdata->drinfo.oldname, + elm->info_last->oldname, + elm->info_last->oldnamelen); + err = au_drinfo_store_sio(w, /*elm*/NULL); + kfree(elm->info_last); + } + if (unlikely(err)) + AuIOErr("%d, %s\n", err, w->whname); + /* go on even if err */ + } +} + +/* caller has to call au_dr_rename_fin() later */ +static int au_drinfo_store(struct dentry *dentry, aufs_bindex_t btgt, + struct qstr *dst_name, void *_rev) +{ + int err, sz, nelm; + aufs_bindex_t bindex, btail; + struct au_drinfo_store work; + struct au_drinfo_rev *rev, **p; + struct au_drinfo_rev_elm *elm; + struct super_block *sb; + struct au_branch *br; + struct au_hinode *hdir; + + err = au_drinfo_store_work_init(&work, btgt); + AuTraceErr(err); + if (unlikely(err)) + goto out; + + err = -ENOMEM; + btail = au_dbtaildir(dentry); + nelm = btail - btgt; + sz = sizeof(*rev) + sizeof(*elm) * nelm; + rev = kcalloc(1, sz, GFP_NOFS); + if (unlikely(!rev)) { + AuTraceErr(err); + goto out_args; + } + rev->nelm = nelm; + elm = rev->elm; + p = _rev; + *p = rev; + + err = 0; + sb = dentry->d_sb; + work.h_ppath.dentry = au_h_dptr(dentry, btgt); + work.h_ppath.mnt = au_sbr_mnt(sb, btgt); + hdir = au_hi(d_inode(dentry), btgt); + au_hn_inode_lock_nested(hdir, AuLsc_I_CHILD); + for (bindex = btgt + 1; bindex <= btail; bindex++, elm++) { + work.h_dentry = au_h_dptr(dentry, bindex); + if (!work.h_dentry) + continue; + + err = au_drinfo_construct(&work.fdata, work.h_dentry, + &work.allocated); + AuTraceErr(err); + if (unlikely(err)) + break; + + work.renameback = au_qstreq(&work.h_dentry->d_name, dst_name); + br = au_sbr(sb, bindex); + work.whnamelen = sizeof(AUFS_WH_DR_INFO_PFX) - 1; + work.whnamelen += au_drinfo_name(br, work.infoname, + work.infonamelen); + AuDbg("whname %.*s, i%llu, %.*s\n", + work.whnamelen, work.whname, + be64_to_cpu((__force __be64)work.fdata->drinfo.ino), + work.fdata->drinfo.oldnamelen, + work.fdata->drinfo.oldname); + + err = au_drinfo_store_sio(&work, elm); + AuTraceErr(err); + if (unlikely(err)) + break; + } + if (unlikely(err)) { + /* revert all drinfo */ + au_drinfo_store_rev(rev, &work); + kfree(rev); + *p = NULL; + } + au_hn_inode_unlock(hdir); + +out_args: + au_drinfo_store_work_fin(&work); +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +int au_dr_rename(struct dentry *src, aufs_bindex_t bindex, + struct qstr *dst_name, void *_rev) +{ + int err, already; + ino_t ino; + struct super_block *sb; + struct au_branch *br; + struct au_dr_br *dr; + struct dentry *h_dentry; + struct inode *h_inode; + struct au_dr_hino *ent; + struct au_drinfo_rev *rev, **p; + + AuDbg("bindex %d\n", bindex); + + err = -ENOMEM; + ent = kmalloc(sizeof(*ent), GFP_NOFS); + if (unlikely(!ent)) + goto out; + + sb = src->d_sb; + br = au_sbr(sb, bindex); + dr = &br->br_dirren; + h_dentry = au_h_dptr(src, bindex); + h_inode = d_inode(h_dentry); + ino = h_inode->i_ino; + ent->dr_h_ino = ino; + already = au_dr_hino_test_add(dr, ino, ent); + AuDbg("b%d, hi%llu, already %d\n", + bindex, (unsigned long long)ino, already); + + err = au_drinfo_store(src, bindex, dst_name, _rev); + AuTraceErr(err); + if (!err) { + p = _rev; + rev = *p; + rev->already = already; + goto out; /* success */ + } + + /* revert */ + if (!already) + au_dr_hino_del(dr, ent); + kfree(ent); + +out: + AuTraceErr(err); + return err; +} + +void au_dr_rename_fin(struct dentry *src, aufs_bindex_t btgt, void *_rev) +{ + struct au_drinfo_rev *rev; + struct au_drinfo_rev_elm *elm; + int nelm; + + rev = _rev; + elm = rev->elm; + for (nelm = rev->nelm; nelm > 0; nelm--, elm++) { + dput(elm->info_dentry); + kfree(elm->info_last); + } + kfree(rev); +} + +void au_dr_rename_rev(struct dentry *src, aufs_bindex_t btgt, void *_rev) +{ + int err; + struct au_drinfo_store work; + struct au_drinfo_rev *rev = _rev; + struct super_block *sb; + struct au_branch *br; + struct inode *h_inode; + struct au_dr_br *dr; + struct au_dr_hino *ent; + + err = au_drinfo_store_work_init(&work, btgt); + if (unlikely(err)) + goto out; + + sb = src->d_sb; + br = au_sbr(sb, btgt); + work.h_ppath.dentry = au_h_dptr(src, btgt); + work.h_ppath.mnt = au_br_mnt(br); + au_drinfo_store_rev(rev, &work); + au_drinfo_store_work_fin(&work); + if (rev->already) + goto out; + + dr = &br->br_dirren; + h_inode = d_inode(work.h_ppath.dentry); + ent = au_dr_hino_find(dr, h_inode->i_ino); + BUG_ON(!ent); + au_dr_hino_del(dr, ent); + kfree(ent); + +out: + kfree(rev); + if (unlikely(err)) + pr_err("failed to remove dirren info\n"); +} + +/* ---------------------------------------------------------------------- */ + +static struct au_drinfo *au_drinfo_do_load(struct path *h_ppath, + char *whname, int whnamelen, + struct dentry **info_dentry) +{ + struct au_drinfo *drinfo; + struct file *f; + struct inode *h_dir; + struct path infopath; + int unlocked; + + AuDbg("%pd/%.*s\n", h_ppath->dentry, whnamelen, whname); + + *info_dentry = NULL; + drinfo = NULL; + unlocked = 0; + h_dir = d_inode(h_ppath->dentry); + vfsub_inode_lock_shared_nested(h_dir, AuLsc_I_PARENT); + infopath.dentry = vfsub_lookup_one_len(whname, h_ppath->dentry, + whnamelen); + if (IS_ERR(infopath.dentry)) { + drinfo = (void *)infopath.dentry; + goto out; + } + + if (d_is_negative(infopath.dentry)) + goto out_dput; /* success */ + + infopath.mnt = h_ppath->mnt; + f = vfsub_dentry_open(&infopath, O_RDONLY); + inode_unlock_shared(h_dir); + unlocked = 1; + if (IS_ERR(f)) { + drinfo = (void *)f; + goto out_dput; + } + + drinfo = au_drinfo_read_k(f, /*h_ino*/0); + if (IS_ERR_OR_NULL(drinfo)) + goto out_fput; + + AuDbg("oldname %.*s\n", drinfo->oldnamelen, drinfo->oldname); + *info_dentry = dget(infopath.dentry); /* keep it alive */ + +out_fput: + fput(f); +out_dput: + dput(infopath.dentry); +out: + if (!unlocked) + inode_unlock_shared(h_dir); + AuTraceErrPtr(drinfo); + return drinfo; +} + +struct au_drinfo_do_load_args { + struct au_drinfo **drinfop; + struct path *h_ppath; + char *whname; + int whnamelen; + struct dentry **info_dentry; +}; + +static void au_call_drinfo_do_load(void *args) +{ + struct au_drinfo_do_load_args *a = args; + + *a->drinfop = au_drinfo_do_load(a->h_ppath, a->whname, a->whnamelen, + a->info_dentry); +} + +struct au_drinfo_load { + struct path h_ppath; + struct qstr *qname; + unsigned char no_sio; + + aufs_bindex_t ninfo; + struct au_drinfo **drinfo; +}; + +static int au_drinfo_load(struct au_drinfo_load *w, aufs_bindex_t bindex, + struct au_branch *br) +{ + int err, wkq_err, whnamelen, e; + char whname[sizeof(AUFS_WH_DR_INFO_PFX) + AUFS_DIRREN_ENV_VAL_SZ] + = AUFS_WH_DR_INFO_PFX; + struct au_drinfo *drinfo; + struct qstr oldname; + struct inode *h_dir, *delegated; + struct dentry *info_dentry; + struct path infopath; + + whnamelen = sizeof(AUFS_WH_DR_INFO_PFX) - 1; + whnamelen += au_drinfo_name(br, whname + whnamelen, + sizeof(whname) - whnamelen); + if (w->no_sio) + drinfo = au_drinfo_do_load(&w->h_ppath, whname, whnamelen, + &info_dentry); + else { + struct au_drinfo_do_load_args args = { + .drinfop = &drinfo, + .h_ppath = &w->h_ppath, + .whname = whname, + .whnamelen = whnamelen, + .info_dentry = &info_dentry + }; + wkq_err = au_wkq_wait(au_call_drinfo_do_load, &args); + if (unlikely(wkq_err)) + drinfo = ERR_PTR(wkq_err); + } + err = PTR_ERR(drinfo); + if (IS_ERR_OR_NULL(drinfo)) + goto out; + + err = 0; + oldname.len = drinfo->oldnamelen; + oldname.name = drinfo->oldname; + if (au_qstreq(w->qname, &oldname)) { + /* the name is renamed back */ + kfree(drinfo); + drinfo = NULL; + + infopath.dentry = info_dentry; + infopath.mnt = w->h_ppath.mnt; + h_dir = d_inode(w->h_ppath.dentry); + delegated = NULL; + inode_lock_nested(h_dir, AuLsc_I_PARENT); + e = vfsub_unlink(h_dir, &infopath, &delegated, !w->no_sio); + inode_unlock(h_dir); + if (unlikely(e)) + AuIOErr("ignored %d, %pd2\n", e, &infopath.dentry); + if (unlikely(e == -EWOULDBLOCK)) + iput(delegated); + } + kfree(w->drinfo[bindex]); + w->drinfo[bindex] = drinfo; + dput(info_dentry); + +out: + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static void au_dr_lkup_free(struct au_drinfo **drinfo, int n) +{ + struct au_drinfo **p = drinfo; + + while (n-- > 0) + kfree(*drinfo++); + kfree(p); +} + +int au_dr_lkup(struct au_do_lookup_args *lkup, struct dentry *dentry, + aufs_bindex_t btgt) +{ + int err, ninfo; + struct au_drinfo_load w; + aufs_bindex_t bindex, bbot; + struct au_branch *br; + struct inode *h_dir; + struct au_dr_hino *ent; + struct super_block *sb; + + AuDbg("%.*s, name %.*s, whname %.*s, b%d\n", + AuLNPair(&dentry->d_name), AuLNPair(&lkup->dirren.dr_name), + AuLNPair(&lkup->whname), btgt); + + sb = dentry->d_sb; + bbot = au_sbbot(sb); + w.ninfo = bbot + 1; + if (!lkup->dirren.drinfo) { + lkup->dirren.drinfo = kcalloc(w.ninfo, + sizeof(*lkup->dirren.drinfo), + GFP_NOFS); + if (unlikely(!lkup->dirren.drinfo)) { + err = -ENOMEM; + goto out; + } + lkup->dirren.ninfo = w.ninfo; + } + w.drinfo = lkup->dirren.drinfo; + w.no_sio = !!uid_eq(current_fsuid(), GLOBAL_ROOT_UID); + w.h_ppath.dentry = au_h_dptr(dentry, btgt); + AuDebugOn(!w.h_ppath.dentry); + w.h_ppath.mnt = au_sbr_mnt(sb, btgt); + w.qname = &dentry->d_name; + + ninfo = 0; + for (bindex = btgt + 1; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + err = au_drinfo_load(&w, bindex, br); + if (unlikely(err)) + goto out_free; + if (w.drinfo[bindex]) + ninfo++; + } + if (!ninfo) { + br = au_sbr(sb, btgt); + h_dir = d_inode(w.h_ppath.dentry); + ent = au_dr_hino_find(&br->br_dirren, h_dir->i_ino); + AuDebugOn(!ent); + au_dr_hino_del(&br->br_dirren, ent); + kfree(ent); + } + goto out; /* success */ + +out_free: + au_dr_lkup_free(lkup->dirren.drinfo, lkup->dirren.ninfo); + lkup->dirren.ninfo = 0; + lkup->dirren.drinfo = NULL; +out: + AuTraceErr(err); + return err; +} + +void au_dr_lkup_fin(struct au_do_lookup_args *lkup) +{ + au_dr_lkup_free(lkup->dirren.drinfo, lkup->dirren.ninfo); +} + +int au_dr_lkup_name(struct au_do_lookup_args *lkup, aufs_bindex_t btgt) +{ + int err; + struct au_drinfo *drinfo; + + err = 0; + if (!lkup->dirren.drinfo) + goto out; + AuDebugOn(lkup->dirren.ninfo < btgt + 1); + drinfo = lkup->dirren.drinfo[btgt + 1]; + if (!drinfo) + goto out; + + kfree(lkup->whname.name); + lkup->whname.name = NULL; + lkup->dirren.dr_name.len = drinfo->oldnamelen; + lkup->dirren.dr_name.name = drinfo->oldname; + lkup->name = &lkup->dirren.dr_name; + err = au_wh_name_alloc(&lkup->whname, lkup->name); + if (!err) + AuDbg("name %.*s, whname %.*s, b%d\n", + AuLNPair(lkup->name), AuLNPair(&lkup->whname), + btgt); + +out: + AuTraceErr(err); + return err; +} + +int au_dr_lkup_h_ino(struct au_do_lookup_args *lkup, aufs_bindex_t bindex, + ino_t h_ino) +{ + int match; + struct au_drinfo *drinfo; + + match = 1; + if (!lkup->dirren.drinfo) + goto out; + AuDebugOn(lkup->dirren.ninfo < bindex + 1); + drinfo = lkup->dirren.drinfo[bindex + 1]; + if (!drinfo) + goto out; + + match = (drinfo->ino == h_ino); + AuDbg("match %d\n", match); + +out: + return match; +} + +/* ---------------------------------------------------------------------- */ + +int au_dr_opt_set(struct super_block *sb) +{ + int err; + aufs_bindex_t bindex, bbot; + struct au_branch *br; + + err = 0; + bbot = au_sbbot(sb); + for (bindex = 0; !err && bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + err = au_dr_hino(sb, bindex, /*br*/NULL, &br->br_path); + } + + return err; +} + +int au_dr_opt_flush(struct super_block *sb) +{ + int err; + aufs_bindex_t bindex, bbot; + struct au_branch *br; + + err = 0; + bbot = au_sbbot(sb); + for (bindex = 0; !err && bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + if (au_br_writable(br->br_perm)) + err = au_dr_hino(sb, bindex, /*br*/NULL, /*path*/NULL); + } + + return err; +} + +int au_dr_opt_clr(struct super_block *sb, int no_flush) +{ + int err; + aufs_bindex_t bindex, bbot; + struct au_branch *br; + + err = 0; + if (!no_flush) { + err = au_dr_opt_flush(sb); + if (unlikely(err)) + goto out; + } + + bbot = au_sbbot(sb); + for (bindex = 0; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + au_dr_hino_free(&br->br_dirren); + } + +out: + return err; +} diff --git a/include/fs/aufs/dirren.h b/include/fs/aufs/dirren.h new file mode 100644 index 00000000000..847480eeb25 --- /dev/null +++ b/include/fs/aufs/dirren.h @@ -0,0 +1,139 @@ +/* + * Copyright (C) 2017-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * renamed dir info + */ + +#ifndef __AUFS_DIRREN_H__ +#define __AUFS_DIRREN_H__ + +#ifdef __KERNEL__ + +#include +#include +#include +#include "hbl.h" + +#define AuDirren_NHASH 100 + +#ifdef CONFIG_AUFS_DIRREN +enum au_brid_type { + AuBrid_Unset, + AuBrid_UUID, + AuBrid_FSID, + AuBrid_DEV +}; + +struct au_dr_brid { + enum au_brid_type type; + union { + uuid_t uuid; /* unimplemented yet */ + fsid_t fsid; + dev_t dev; + }; +}; + +/* 20 is the max digits length of ulong 64 */ +/* brid-type "_" uuid "_" inum */ +#define AUFS_DIRREN_FNAME_SZ (1 + 1 + UUID_STRING_LEN + 20) +#define AUFS_DIRREN_ENV_VAL_SZ (AUFS_DIRREN_FNAME_SZ + 1 + 20) + +struct au_dr_hino { + struct hlist_bl_node dr_hnode; + ino_t dr_h_ino; +}; + +struct au_dr_br { + struct hlist_bl_head dr_h_ino[AuDirren_NHASH]; + struct au_dr_brid dr_brid; +}; + +struct au_dr_lookup { + /* dr_name is pointed by struct au_do_lookup_args.name */ + struct qstr dr_name; /* subset of dr_info */ + aufs_bindex_t ninfo; + struct au_drinfo **drinfo; +}; +#else +struct au_dr_hino; +/* empty */ +struct au_dr_br { }; +struct au_dr_lookup { }; +#endif + +/* ---------------------------------------------------------------------- */ + +struct au_branch; +struct au_do_lookup_args; +struct au_hinode; +#ifdef CONFIG_AUFS_DIRREN +int au_dr_hino_test_add(struct au_dr_br *dr, ino_t h_ino, + struct au_dr_hino *add_ent); +void au_dr_hino_free(struct au_dr_br *dr); +int au_dr_br_init(struct super_block *sb, struct au_branch *br, + const struct path *path); +int au_dr_br_fin(struct super_block *sb, struct au_branch *br); +int au_dr_rename(struct dentry *src, aufs_bindex_t bindex, + struct qstr *dst_name, void *_rev); +void au_dr_rename_fin(struct dentry *src, aufs_bindex_t btgt, void *rev); +void au_dr_rename_rev(struct dentry *src, aufs_bindex_t bindex, void *rev); +int au_dr_lkup(struct au_do_lookup_args *lkup, struct dentry *dentry, + aufs_bindex_t bindex); +int au_dr_lkup_name(struct au_do_lookup_args *lkup, aufs_bindex_t btgt); +int au_dr_lkup_h_ino(struct au_do_lookup_args *lkup, aufs_bindex_t bindex, + ino_t h_ino); +void au_dr_lkup_fin(struct au_do_lookup_args *lkup); +int au_dr_opt_set(struct super_block *sb); +int au_dr_opt_flush(struct super_block *sb); +int au_dr_opt_clr(struct super_block *sb, int no_flush); +#else +AuStubInt0(au_dr_hino_test_add, struct au_dr_br *dr, ino_t h_ino, + struct au_dr_hino *add_ent); +AuStubVoid(au_dr_hino_free, struct au_dr_br *dr); +AuStubInt0(au_dr_br_init, struct super_block *sb, struct au_branch *br, + const struct path *path); +AuStubInt0(au_dr_br_fin, struct super_block *sb, struct au_branch *br); +AuStubInt0(au_dr_rename, struct dentry *src, aufs_bindex_t bindex, + struct qstr *dst_name, void *_rev); +AuStubVoid(au_dr_rename_fin, struct dentry *src, aufs_bindex_t btgt, void *rev); +AuStubVoid(au_dr_rename_rev, struct dentry *src, aufs_bindex_t bindex, + void *rev); +AuStubInt0(au_dr_lkup, struct au_do_lookup_args *lkup, struct dentry *dentry, + aufs_bindex_t bindex); +AuStubInt0(au_dr_lkup_name, struct au_do_lookup_args *lkup, aufs_bindex_t btgt); +AuStubInt0(au_dr_lkup_h_ino, struct au_do_lookup_args *lkup, + aufs_bindex_t bindex, ino_t h_ino); +AuStubVoid(au_dr_lkup_fin, struct au_do_lookup_args *lkup); +AuStubInt0(au_dr_opt_set, struct super_block *sb); +AuStubInt0(au_dr_opt_flush, struct super_block *sb); +AuStubInt0(au_dr_opt_clr, struct super_block *sb, int no_flush); +#endif + +/* ---------------------------------------------------------------------- */ + +#ifdef CONFIG_AUFS_DIRREN +static inline int au_dr_ihash(ino_t h_ino) +{ + return h_ino % AuDirren_NHASH; +} +#else +AuStubInt0(au_dr_ihash, ino_t h_ino); +#endif + +#endif /* __KERNEL__ */ +#endif /* __AUFS_DIRREN_H__ */ diff --git a/include/fs/aufs/dynop.c b/include/fs/aufs/dynop.c new file mode 100644 index 00000000000..d38dd77a780 --- /dev/null +++ b/include/fs/aufs/dynop.c @@ -0,0 +1,369 @@ +/* + * Copyright (C) 2010-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * dynamically customizable operations for regular files + */ + +#include "aufs.h" + +#define DyPrSym(key) AuDbgSym(key->dk_op.dy_hop) + +/* + * How large will these lists be? + * Usually just a few elements, 20-30 at most for each, I guess. + */ +static struct hlist_bl_head dynop[AuDyLast]; + +static struct au_dykey *dy_gfind_get(struct hlist_bl_head *hbl, + const void *h_op) +{ + struct au_dykey *key, *tmp; + struct hlist_bl_node *pos; + + key = NULL; + hlist_bl_lock(hbl); + hlist_bl_for_each_entry(tmp, pos, hbl, dk_hnode) + if (tmp->dk_op.dy_hop == h_op) { + key = tmp; + kref_get(&key->dk_kref); + break; + } + hlist_bl_unlock(hbl); + + return key; +} + +static struct au_dykey *dy_bradd(struct au_branch *br, struct au_dykey *key) +{ + struct au_dykey **k, *found; + const void *h_op = key->dk_op.dy_hop; + int i; + + found = NULL; + k = br->br_dykey; + for (i = 0; i < AuBrDynOp; i++) + if (k[i]) { + if (k[i]->dk_op.dy_hop == h_op) { + found = k[i]; + break; + } + } else + break; + if (!found) { + spin_lock(&br->br_dykey_lock); + for (; i < AuBrDynOp; i++) + if (k[i]) { + if (k[i]->dk_op.dy_hop == h_op) { + found = k[i]; + break; + } + } else { + k[i] = key; + break; + } + spin_unlock(&br->br_dykey_lock); + BUG_ON(i == AuBrDynOp); /* expand the array */ + } + + return found; +} + +/* kref_get() if @key is already added */ +static struct au_dykey *dy_gadd(struct hlist_bl_head *hbl, struct au_dykey *key) +{ + struct au_dykey *tmp, *found; + struct hlist_bl_node *pos; + const void *h_op = key->dk_op.dy_hop; + + found = NULL; + hlist_bl_lock(hbl); + hlist_bl_for_each_entry(tmp, pos, hbl, dk_hnode) + if (tmp->dk_op.dy_hop == h_op) { + kref_get(&tmp->dk_kref); + found = tmp; + break; + } + if (!found) + hlist_bl_add_head(&key->dk_hnode, hbl); + hlist_bl_unlock(hbl); + + if (!found) + DyPrSym(key); + return found; +} + +static void dy_free_rcu(struct rcu_head *rcu) +{ + struct au_dykey *key; + + key = container_of(rcu, struct au_dykey, dk_rcu); + DyPrSym(key); + kfree(key); +} + +static void dy_free(struct kref *kref) +{ + struct au_dykey *key; + struct hlist_bl_head *hbl; + + key = container_of(kref, struct au_dykey, dk_kref); + hbl = dynop + key->dk_op.dy_type; + au_hbl_del(&key->dk_hnode, hbl); + call_rcu(&key->dk_rcu, dy_free_rcu); +} + +void au_dy_put(struct au_dykey *key) +{ + kref_put(&key->dk_kref, dy_free); +} + +/* ---------------------------------------------------------------------- */ + +#define DyDbgSize(cnt, op) AuDebugOn(cnt != sizeof(op)/sizeof(void *)) + +#ifdef CONFIG_AUFS_DEBUG +#define DyDbgDeclare(cnt) unsigned int cnt = 0 +#define DyDbgInc(cnt) do { cnt++; } while (0) +#else +#define DyDbgDeclare(cnt) do {} while (0) +#define DyDbgInc(cnt) do {} while (0) +#endif + +#define DySet(func, dst, src, h_op, h_sb) do { \ + DyDbgInc(cnt); \ + if (h_op->func) { \ + if (src.func) \ + dst.func = src.func; \ + else \ + AuDbg("%s %s\n", au_sbtype(h_sb), #func); \ + } \ +} while (0) + +#define DySetForce(func, dst, src) do { \ + AuDebugOn(!src.func); \ + DyDbgInc(cnt); \ + dst.func = src.func; \ +} while (0) + +#define DySetAop(func) \ + DySet(func, dyaop->da_op, aufs_aop, h_aop, h_sb) +#define DySetAopForce(func) \ + DySetForce(func, dyaop->da_op, aufs_aop) + +static void dy_aop(struct au_dykey *key, const void *h_op, + struct super_block *h_sb __maybe_unused) +{ + struct au_dyaop *dyaop = (void *)key; + const struct address_space_operations *h_aop = h_op; + DyDbgDeclare(cnt); + + AuDbg("%s\n", au_sbtype(h_sb)); + + DySetAop(writepage); + DySetAopForce(readpage); /* force */ + DySetAop(writepages); + DySetAop(set_page_dirty); + DySetAop(readpages); + DySetAop(write_begin); + DySetAop(write_end); + DySetAop(bmap); + DySetAop(invalidatepage); + DySetAop(releasepage); + DySetAop(freepage); + /* this one will be changed according to an aufs mount option */ + DySetAop(direct_IO); + DySetAop(migratepage); + DySetAop(isolate_page); + DySetAop(putback_page); + DySetAop(launder_page); + DySetAop(is_partially_uptodate); + DySetAop(is_dirty_writeback); + DySetAop(error_remove_page); + DySetAop(swap_activate); + DySetAop(swap_deactivate); + + DyDbgSize(cnt, *h_aop); +} + +/* ---------------------------------------------------------------------- */ + +static void dy_bug(struct kref *kref) +{ + BUG(); +} + +static struct au_dykey *dy_get(struct au_dynop *op, struct au_branch *br) +{ + struct au_dykey *key, *old; + struct hlist_bl_head *hbl; + struct op { + unsigned int sz; + void (*set)(struct au_dykey *key, const void *h_op, + struct super_block *h_sb __maybe_unused); + }; + static const struct op a[] = { + [AuDy_AOP] = { + .sz = sizeof(struct au_dyaop), + .set = dy_aop + } + }; + const struct op *p; + + hbl = dynop + op->dy_type; + key = dy_gfind_get(hbl, op->dy_hop); + if (key) + goto out_add; /* success */ + + p = a + op->dy_type; + key = kzalloc(p->sz, GFP_NOFS); + if (unlikely(!key)) { + key = ERR_PTR(-ENOMEM); + goto out; + } + + key->dk_op.dy_hop = op->dy_hop; + kref_init(&key->dk_kref); + p->set(key, op->dy_hop, au_br_sb(br)); + old = dy_gadd(hbl, key); + if (old) { + kfree(key); + key = old; + } + +out_add: + old = dy_bradd(br, key); + if (old) + /* its ref-count should never be zero here */ + kref_put(&key->dk_kref, dy_bug); +out: + return key; +} + +/* ---------------------------------------------------------------------- */ +/* + * Aufs prohibits O_DIRECT by defaut even if the branch supports it. + * This behaviour is necessary to return an error from open(O_DIRECT) instead + * of the succeeding I/O. The dio mount option enables O_DIRECT and makes + * open(O_DIRECT) always succeed, but the succeeding I/O may return an error. + * See the aufs manual in detail. + */ +static void dy_adx(struct au_dyaop *dyaop, int do_dx) +{ + if (!do_dx) + dyaop->da_op.direct_IO = NULL; + else + dyaop->da_op.direct_IO = aufs_aop.direct_IO; +} + +static struct au_dyaop *dy_aget(struct au_branch *br, + const struct address_space_operations *h_aop, + int do_dx) +{ + struct au_dyaop *dyaop; + struct au_dynop op; + + op.dy_type = AuDy_AOP; + op.dy_haop = h_aop; + dyaop = (void *)dy_get(&op, br); + if (IS_ERR(dyaop)) + goto out; + dy_adx(dyaop, do_dx); + +out: + return dyaop; +} + +int au_dy_iaop(struct inode *inode, aufs_bindex_t bindex, + struct inode *h_inode) +{ + int err, do_dx; + struct super_block *sb; + struct au_branch *br; + struct au_dyaop *dyaop; + + AuDebugOn(!S_ISREG(h_inode->i_mode)); + IiMustWriteLock(inode); + + sb = inode->i_sb; + br = au_sbr(sb, bindex); + do_dx = !!au_opt_test(au_mntflags(sb), DIO); + dyaop = dy_aget(br, h_inode->i_mapping->a_ops, do_dx); + err = PTR_ERR(dyaop); + if (IS_ERR(dyaop)) + /* unnecessary to call dy_fput() */ + goto out; + + err = 0; + inode->i_mapping->a_ops = &dyaop->da_op; + +out: + return err; +} + +/* + * Is it safe to replace a_ops during the inode/file is in operation? + * Yes, I hope so. + */ +int au_dy_irefresh(struct inode *inode) +{ + int err; + aufs_bindex_t btop; + struct inode *h_inode; + + err = 0; + if (S_ISREG(inode->i_mode)) { + btop = au_ibtop(inode); + h_inode = au_h_iptr(inode, btop); + err = au_dy_iaop(inode, btop, h_inode); + } + return err; +} + +void au_dy_arefresh(int do_dx) +{ + struct hlist_bl_head *hbl; + struct hlist_bl_node *pos; + struct au_dykey *key; + + hbl = dynop + AuDy_AOP; + hlist_bl_lock(hbl); + hlist_bl_for_each_entry(key, pos, hbl, dk_hnode) + dy_adx((void *)key, do_dx); + hlist_bl_unlock(hbl); +} + +/* ---------------------------------------------------------------------- */ + +void __init au_dy_init(void) +{ + int i; + + /* make sure that 'struct au_dykey *' can be any type */ + BUILD_BUG_ON(offsetof(struct au_dyaop, da_key)); + + for (i = 0; i < AuDyLast; i++) + INIT_HLIST_BL_HEAD(dynop + i); +} + +void au_dy_fin(void) +{ + int i; + + for (i = 0; i < AuDyLast; i++) + WARN_ON(!hlist_bl_empty(dynop + i)); +} diff --git a/include/fs/aufs/dynop.h b/include/fs/aufs/dynop.h new file mode 100644 index 00000000000..81a77050511 --- /dev/null +++ b/include/fs/aufs/dynop.h @@ -0,0 +1,74 @@ +/* + * Copyright (C) 2010-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * dynamically customizable operations (for regular files only) + */ + +#ifndef __AUFS_DYNOP_H__ +#define __AUFS_DYNOP_H__ + +#ifdef __KERNEL__ + +#include +#include + +enum {AuDy_AOP, AuDyLast}; + +struct au_dynop { + int dy_type; + union { + const void *dy_hop; + const struct address_space_operations *dy_haop; + }; +}; + +struct au_dykey { + union { + struct hlist_bl_node dk_hnode; + struct rcu_head dk_rcu; + }; + struct au_dynop dk_op; + + /* + * during I am in the branch local array, kref is gotten. when the + * branch is removed, kref is put. + */ + struct kref dk_kref; +}; + +/* stop unioning since their sizes are very different from each other */ +struct au_dyaop { + struct au_dykey da_key; + struct address_space_operations da_op; /* not const */ +}; + +/* ---------------------------------------------------------------------- */ + +/* dynop.c */ +struct au_branch; +void au_dy_put(struct au_dykey *key); +int au_dy_iaop(struct inode *inode, aufs_bindex_t bindex, + struct inode *h_inode); +int au_dy_irefresh(struct inode *inode); +void au_dy_arefresh(int do_dio); + +void __init au_dy_init(void); +void au_dy_fin(void); + +#endif /* __KERNEL__ */ +#endif /* __AUFS_DYNOP_H__ */ diff --git a/include/fs/aufs/export.c b/include/fs/aufs/export.c new file mode 100644 index 00000000000..155e07a8eba --- /dev/null +++ b/include/fs/aufs/export.c @@ -0,0 +1,836 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * export via nfs + */ + +#include +#include +#include +#include +#include +#include +#include "aufs.h" + +union conv { +#ifdef CONFIG_AUFS_INO_T_64 + __u32 a[2]; +#else + __u32 a[1]; +#endif + ino_t ino; +}; + +static ino_t decode_ino(__u32 *a) +{ + union conv u; + + BUILD_BUG_ON(sizeof(u.ino) != sizeof(u.a)); + u.a[0] = a[0]; +#ifdef CONFIG_AUFS_INO_T_64 + u.a[1] = a[1]; +#endif + return u.ino; +} + +static void encode_ino(__u32 *a, ino_t ino) +{ + union conv u; + + u.ino = ino; + a[0] = u.a[0]; +#ifdef CONFIG_AUFS_INO_T_64 + a[1] = u.a[1]; +#endif +} + +/* NFS file handle */ +enum { + Fh_br_id, + Fh_sigen, +#ifdef CONFIG_AUFS_INO_T_64 + /* support 64bit inode number */ + Fh_ino1, + Fh_ino2, + Fh_dir_ino1, + Fh_dir_ino2, +#else + Fh_ino1, + Fh_dir_ino1, +#endif + Fh_igen, + Fh_h_type, + Fh_tail, + + Fh_ino = Fh_ino1, + Fh_dir_ino = Fh_dir_ino1 +}; + +static int au_test_anon(struct dentry *dentry) +{ + /* note: read d_flags without d_lock */ + return !!(dentry->d_flags & DCACHE_DISCONNECTED); +} + +int au_test_nfsd(void) +{ + int ret; + struct task_struct *tsk = current; + char comm[sizeof(tsk->comm)]; + + ret = 0; + if (tsk->flags & PF_KTHREAD) { + get_task_comm(comm, tsk); + ret = !strcmp(comm, "nfsd"); + } + + return ret; +} + +/* ---------------------------------------------------------------------- */ +/* inode generation external table */ + +void au_xigen_inc(struct inode *inode) +{ + loff_t pos; + ssize_t sz; + __u32 igen; + struct super_block *sb; + struct au_sbinfo *sbinfo; + + sb = inode->i_sb; + AuDebugOn(!au_opt_test(au_mntflags(sb), XINO)); + + sbinfo = au_sbi(sb); + pos = inode->i_ino; + pos *= sizeof(igen); + igen = inode->i_generation + 1; + sz = xino_fwrite(sbinfo->si_xwrite, sbinfo->si_xigen, &igen, + sizeof(igen), &pos); + if (sz == sizeof(igen)) + return; /* success */ + + if (unlikely(sz >= 0)) + AuIOErr("xigen error (%zd)\n", sz); +} + +int au_xigen_new(struct inode *inode) +{ + int err; + loff_t pos; + ssize_t sz; + struct super_block *sb; + struct au_sbinfo *sbinfo; + struct file *file; + + err = 0; + /* todo: dirty, at mount time */ + if (inode->i_ino == AUFS_ROOT_INO) + goto out; + sb = inode->i_sb; + SiMustAnyLock(sb); + if (unlikely(!au_opt_test(au_mntflags(sb), XINO))) + goto out; + + err = -EFBIG; + pos = inode->i_ino; + if (unlikely(au_loff_max / sizeof(inode->i_generation) - 1 < pos)) { + AuIOErr1("too large i%lld\n", pos); + goto out; + } + pos *= sizeof(inode->i_generation); + + err = 0; + sbinfo = au_sbi(sb); + file = sbinfo->si_xigen; + BUG_ON(!file); + + if (vfsub_f_size_read(file) + < pos + sizeof(inode->i_generation)) { + inode->i_generation = atomic_inc_return(&sbinfo->si_xigen_next); + sz = xino_fwrite(sbinfo->si_xwrite, file, &inode->i_generation, + sizeof(inode->i_generation), &pos); + } else + sz = xino_fread(sbinfo->si_xread, file, &inode->i_generation, + sizeof(inode->i_generation), &pos); + if (sz == sizeof(inode->i_generation)) + goto out; /* success */ + + err = sz; + if (unlikely(sz >= 0)) { + err = -EIO; + AuIOErr("xigen error (%zd)\n", sz); + } + +out: + return err; +} + +int au_xigen_set(struct super_block *sb, struct file *base) +{ + int err; + struct au_sbinfo *sbinfo; + struct file *file; + + SiMustWriteLock(sb); + + sbinfo = au_sbi(sb); + file = au_xino_create2(base, sbinfo->si_xigen); + err = PTR_ERR(file); + if (IS_ERR(file)) + goto out; + err = 0; + if (sbinfo->si_xigen) + fput(sbinfo->si_xigen); + sbinfo->si_xigen = file; + +out: + return err; +} + +void au_xigen_clr(struct super_block *sb) +{ + struct au_sbinfo *sbinfo; + + SiMustWriteLock(sb); + + sbinfo = au_sbi(sb); + if (sbinfo->si_xigen) { + fput(sbinfo->si_xigen); + sbinfo->si_xigen = NULL; + } +} + +/* ---------------------------------------------------------------------- */ + +static struct dentry *decode_by_ino(struct super_block *sb, ino_t ino, + ino_t dir_ino) +{ + struct dentry *dentry, *d; + struct inode *inode; + unsigned int sigen; + + dentry = NULL; + inode = ilookup(sb, ino); + if (!inode) + goto out; + + dentry = ERR_PTR(-ESTALE); + sigen = au_sigen(sb); + if (unlikely(au_is_bad_inode(inode) + || IS_DEADDIR(inode) + || sigen != au_iigen(inode, NULL))) + goto out_iput; + + dentry = NULL; + if (!dir_ino || S_ISDIR(inode->i_mode)) + dentry = d_find_alias(inode); + else { + spin_lock(&inode->i_lock); + hlist_for_each_entry(d, &inode->i_dentry, d_u.d_alias) { + spin_lock(&d->d_lock); + if (!au_test_anon(d) + && d_inode(d->d_parent)->i_ino == dir_ino) { + dentry = dget_dlock(d); + spin_unlock(&d->d_lock); + break; + } + spin_unlock(&d->d_lock); + } + spin_unlock(&inode->i_lock); + } + if (unlikely(dentry && au_digen_test(dentry, sigen))) { + /* need to refresh */ + dput(dentry); + dentry = NULL; + } + +out_iput: + iput(inode); +out: + AuTraceErrPtr(dentry); + return dentry; +} + +/* ---------------------------------------------------------------------- */ + +/* todo: dirty? */ +/* if exportfs_decode_fh() passed vfsmount*, we could be happy */ + +struct au_compare_mnt_args { + /* input */ + struct super_block *sb; + + /* output */ + struct vfsmount *mnt; +}; + +static int au_compare_mnt(struct vfsmount *mnt, void *arg) +{ + struct au_compare_mnt_args *a = arg; + + if (mnt->mnt_sb != a->sb) + return 0; + a->mnt = mntget(mnt); + return 1; +} + +static struct vfsmount *au_mnt_get(struct super_block *sb) +{ + int err; + struct path root; + struct au_compare_mnt_args args = { + .sb = sb + }; + + get_fs_root(current->fs, &root); + rcu_read_lock(); + err = iterate_mounts(au_compare_mnt, &args, root.mnt); + rcu_read_unlock(); + path_put(&root); + AuDebugOn(!err); + AuDebugOn(!args.mnt); + return args.mnt; +} + +struct au_nfsd_si_lock { + unsigned int sigen; + aufs_bindex_t bindex, br_id; + unsigned char force_lock; +}; + +static int si_nfsd_read_lock(struct super_block *sb, + struct au_nfsd_si_lock *nsi_lock) +{ + int err; + aufs_bindex_t bindex; + + si_read_lock(sb, AuLock_FLUSH); + + /* branch id may be wrapped around */ + err = 0; + bindex = au_br_index(sb, nsi_lock->br_id); + if (bindex >= 0 && nsi_lock->sigen + AUFS_BRANCH_MAX > au_sigen(sb)) + goto out; /* success */ + + err = -ESTALE; + bindex = -1; + if (!nsi_lock->force_lock) + si_read_unlock(sb); + +out: + nsi_lock->bindex = bindex; + return err; +} + +struct find_name_by_ino { + struct dir_context ctx; + int called, found; + ino_t ino; + char *name; + int namelen; +}; + +static int +find_name_by_ino(struct dir_context *ctx, const char *name, int namelen, + loff_t offset, u64 ino, unsigned int d_type) +{ + struct find_name_by_ino *a = container_of(ctx, struct find_name_by_ino, + ctx); + + a->called++; + if (a->ino != ino) + return 0; + + memcpy(a->name, name, namelen); + a->namelen = namelen; + a->found = 1; + return 1; +} + +static struct dentry *au_lkup_by_ino(struct path *path, ino_t ino, + struct au_nfsd_si_lock *nsi_lock) +{ + struct dentry *dentry, *parent; + struct file *file; + struct inode *dir; + struct find_name_by_ino arg = { + .ctx = { + .actor = find_name_by_ino + } + }; + int err; + + parent = path->dentry; + if (nsi_lock) + si_read_unlock(parent->d_sb); + file = vfsub_dentry_open(path, au_dir_roflags); + dentry = (void *)file; + if (IS_ERR(file)) + goto out; + + dentry = ERR_PTR(-ENOMEM); + arg.name = (void *)__get_free_page(GFP_NOFS); + if (unlikely(!arg.name)) + goto out_file; + arg.ino = ino; + arg.found = 0; + do { + arg.called = 0; + /* smp_mb(); */ + err = vfsub_iterate_dir(file, &arg.ctx); + } while (!err && !arg.found && arg.called); + dentry = ERR_PTR(err); + if (unlikely(err)) + goto out_name; + /* instead of ENOENT */ + dentry = ERR_PTR(-ESTALE); + if (!arg.found) + goto out_name; + + /* do not call vfsub_lkup_one() */ + dir = d_inode(parent); + dentry = vfsub_lookup_one_len_unlocked(arg.name, parent, arg.namelen); + AuTraceErrPtr(dentry); + if (IS_ERR(dentry)) + goto out_name; + AuDebugOn(au_test_anon(dentry)); + if (unlikely(d_really_is_negative(dentry))) { + dput(dentry); + dentry = ERR_PTR(-ENOENT); + } + +out_name: + free_page((unsigned long)arg.name); +out_file: + fput(file); +out: + if (unlikely(nsi_lock + && si_nfsd_read_lock(parent->d_sb, nsi_lock) < 0)) + if (!IS_ERR(dentry)) { + dput(dentry); + dentry = ERR_PTR(-ESTALE); + } + AuTraceErrPtr(dentry); + return dentry; +} + +static struct dentry *decode_by_dir_ino(struct super_block *sb, ino_t ino, + ino_t dir_ino, + struct au_nfsd_si_lock *nsi_lock) +{ + struct dentry *dentry; + struct path path; + + if (dir_ino != AUFS_ROOT_INO) { + path.dentry = decode_by_ino(sb, dir_ino, 0); + dentry = path.dentry; + if (!path.dentry || IS_ERR(path.dentry)) + goto out; + AuDebugOn(au_test_anon(path.dentry)); + } else + path.dentry = dget(sb->s_root); + + path.mnt = au_mnt_get(sb); + dentry = au_lkup_by_ino(&path, ino, nsi_lock); + path_put(&path); + +out: + AuTraceErrPtr(dentry); + return dentry; +} + +/* ---------------------------------------------------------------------- */ + +static int h_acceptable(void *expv, struct dentry *dentry) +{ + return 1; +} + +static char *au_build_path(struct dentry *h_parent, struct path *h_rootpath, + char *buf, int len, struct super_block *sb) +{ + char *p; + int n; + struct path path; + + p = d_path(h_rootpath, buf, len); + if (IS_ERR(p)) + goto out; + n = strlen(p); + + path.mnt = h_rootpath->mnt; + path.dentry = h_parent; + p = d_path(&path, buf, len); + if (IS_ERR(p)) + goto out; + if (n != 1) + p += n; + + path.mnt = au_mnt_get(sb); + path.dentry = sb->s_root; + p = d_path(&path, buf, len - strlen(p)); + mntput(path.mnt); + if (IS_ERR(p)) + goto out; + if (n != 1) + p[strlen(p)] = '/'; + +out: + AuTraceErrPtr(p); + return p; +} + +static +struct dentry *decode_by_path(struct super_block *sb, ino_t ino, __u32 *fh, + int fh_len, struct au_nfsd_si_lock *nsi_lock) +{ + struct dentry *dentry, *h_parent, *root; + struct super_block *h_sb; + char *pathname, *p; + struct vfsmount *h_mnt; + struct au_branch *br; + int err; + struct path path; + + br = au_sbr(sb, nsi_lock->bindex); + h_mnt = au_br_mnt(br); + h_sb = h_mnt->mnt_sb; + /* todo: call lower fh_to_dentry()? fh_to_parent()? */ + lockdep_off(); + h_parent = exportfs_decode_fh(h_mnt, (void *)(fh + Fh_tail), + fh_len - Fh_tail, fh[Fh_h_type], + h_acceptable, /*context*/NULL); + lockdep_on(); + dentry = h_parent; + if (unlikely(!h_parent || IS_ERR(h_parent))) { + AuWarn1("%s decode_fh failed, %ld\n", + au_sbtype(h_sb), PTR_ERR(h_parent)); + goto out; + } + dentry = NULL; + if (unlikely(au_test_anon(h_parent))) { + AuWarn1("%s decode_fh returned a disconnected dentry\n", + au_sbtype(h_sb)); + goto out_h_parent; + } + + dentry = ERR_PTR(-ENOMEM); + pathname = (void *)__get_free_page(GFP_NOFS); + if (unlikely(!pathname)) + goto out_h_parent; + + root = sb->s_root; + path.mnt = h_mnt; + di_read_lock_parent(root, !AuLock_IR); + path.dentry = au_h_dptr(root, nsi_lock->bindex); + di_read_unlock(root, !AuLock_IR); + p = au_build_path(h_parent, &path, pathname, PAGE_SIZE, sb); + dentry = (void *)p; + if (IS_ERR(p)) + goto out_pathname; + + si_read_unlock(sb); + err = vfsub_kern_path(p, LOOKUP_FOLLOW | LOOKUP_DIRECTORY, &path); + dentry = ERR_PTR(err); + if (unlikely(err)) + goto out_relock; + + dentry = ERR_PTR(-ENOENT); + AuDebugOn(au_test_anon(path.dentry)); + if (unlikely(d_really_is_negative(path.dentry))) + goto out_path; + + if (ino != d_inode(path.dentry)->i_ino) + dentry = au_lkup_by_ino(&path, ino, /*nsi_lock*/NULL); + else + dentry = dget(path.dentry); + +out_path: + path_put(&path); +out_relock: + if (unlikely(si_nfsd_read_lock(sb, nsi_lock) < 0)) + if (!IS_ERR(dentry)) { + dput(dentry); + dentry = ERR_PTR(-ESTALE); + } +out_pathname: + free_page((unsigned long)pathname); +out_h_parent: + dput(h_parent); +out: + AuTraceErrPtr(dentry); + return dentry; +} + +/* ---------------------------------------------------------------------- */ + +static struct dentry * +aufs_fh_to_dentry(struct super_block *sb, struct fid *fid, int fh_len, + int fh_type) +{ + struct dentry *dentry; + __u32 *fh = fid->raw; + struct au_branch *br; + ino_t ino, dir_ino; + struct au_nfsd_si_lock nsi_lock = { + .force_lock = 0 + }; + + dentry = ERR_PTR(-ESTALE); + /* it should never happen, but the file handle is unreliable */ + if (unlikely(fh_len < Fh_tail)) + goto out; + nsi_lock.sigen = fh[Fh_sigen]; + nsi_lock.br_id = fh[Fh_br_id]; + + /* branch id may be wrapped around */ + br = NULL; + if (unlikely(si_nfsd_read_lock(sb, &nsi_lock))) + goto out; + nsi_lock.force_lock = 1; + + /* is this inode still cached? */ + ino = decode_ino(fh + Fh_ino); + /* it should never happen */ + if (unlikely(ino == AUFS_ROOT_INO)) + goto out_unlock; + + dir_ino = decode_ino(fh + Fh_dir_ino); + dentry = decode_by_ino(sb, ino, dir_ino); + if (IS_ERR(dentry)) + goto out_unlock; + if (dentry) + goto accept; + + /* is the parent dir cached? */ + br = au_sbr(sb, nsi_lock.bindex); + au_br_get(br); + dentry = decode_by_dir_ino(sb, ino, dir_ino, &nsi_lock); + if (IS_ERR(dentry)) + goto out_unlock; + if (dentry) + goto accept; + + /* lookup path */ + dentry = decode_by_path(sb, ino, fh, fh_len, &nsi_lock); + if (IS_ERR(dentry)) + goto out_unlock; + if (unlikely(!dentry)) + /* todo?: make it ESTALE */ + goto out_unlock; + +accept: + if (!au_digen_test(dentry, au_sigen(sb)) + && d_inode(dentry)->i_generation == fh[Fh_igen]) + goto out_unlock; /* success */ + + dput(dentry); + dentry = ERR_PTR(-ESTALE); +out_unlock: + if (br) + au_br_put(br); + si_read_unlock(sb); +out: + AuTraceErrPtr(dentry); + return dentry; +} + +#if 0 /* reserved for future use */ +/* support subtreecheck option */ +static struct dentry *aufs_fh_to_parent(struct super_block *sb, struct fid *fid, + int fh_len, int fh_type) +{ + struct dentry *parent; + __u32 *fh = fid->raw; + ino_t dir_ino; + + dir_ino = decode_ino(fh + Fh_dir_ino); + parent = decode_by_ino(sb, dir_ino, 0); + if (IS_ERR(parent)) + goto out; + if (!parent) + parent = decode_by_path(sb, au_br_index(sb, fh[Fh_br_id]), + dir_ino, fh, fh_len); + +out: + AuTraceErrPtr(parent); + return parent; +} +#endif + +/* ---------------------------------------------------------------------- */ + +static int aufs_encode_fh(struct inode *inode, __u32 *fh, int *max_len, + struct inode *dir) +{ + int err; + aufs_bindex_t bindex; + struct super_block *sb, *h_sb; + struct dentry *dentry, *parent, *h_parent; + struct inode *h_dir; + struct au_branch *br; + + err = -ENOSPC; + if (unlikely(*max_len <= Fh_tail)) { + AuWarn1("NFSv2 client (max_len %d)?\n", *max_len); + goto out; + } + + err = FILEID_ROOT; + if (inode->i_ino == AUFS_ROOT_INO) { + AuDebugOn(inode->i_ino != AUFS_ROOT_INO); + goto out; + } + + h_parent = NULL; + sb = inode->i_sb; + err = si_read_lock(sb, AuLock_FLUSH); + if (unlikely(err)) + goto out; + +#ifdef CONFIG_AUFS_DEBUG + if (unlikely(!au_opt_test(au_mntflags(sb), XINO))) + AuWarn1("NFS-exporting requires xino\n"); +#endif + err = -EIO; + parent = NULL; + ii_read_lock_child(inode); + bindex = au_ibtop(inode); + if (!dir) { + dentry = d_find_any_alias(inode); + if (unlikely(!dentry)) + goto out_unlock; + AuDebugOn(au_test_anon(dentry)); + parent = dget_parent(dentry); + dput(dentry); + if (unlikely(!parent)) + goto out_unlock; + if (d_really_is_positive(parent)) + dir = d_inode(parent); + } + + ii_read_lock_parent(dir); + h_dir = au_h_iptr(dir, bindex); + ii_read_unlock(dir); + if (unlikely(!h_dir)) + goto out_parent; + h_parent = d_find_any_alias(h_dir); + if (unlikely(!h_parent)) + goto out_hparent; + + err = -EPERM; + br = au_sbr(sb, bindex); + h_sb = au_br_sb(br); + if (unlikely(!h_sb->s_export_op)) { + AuErr1("%s branch is not exportable\n", au_sbtype(h_sb)); + goto out_hparent; + } + + fh[Fh_br_id] = br->br_id; + fh[Fh_sigen] = au_sigen(sb); + encode_ino(fh + Fh_ino, inode->i_ino); + encode_ino(fh + Fh_dir_ino, dir->i_ino); + fh[Fh_igen] = inode->i_generation; + + *max_len -= Fh_tail; + fh[Fh_h_type] = exportfs_encode_fh(h_parent, (void *)(fh + Fh_tail), + max_len, + /*connectable or subtreecheck*/0); + err = fh[Fh_h_type]; + *max_len += Fh_tail; + /* todo: macros? */ + if (err != FILEID_INVALID) + err = 99; + else + AuWarn1("%s encode_fh failed\n", au_sbtype(h_sb)); + +out_hparent: + dput(h_parent); +out_parent: + dput(parent); +out_unlock: + ii_read_unlock(inode); + si_read_unlock(sb); +out: + if (unlikely(err < 0)) + err = FILEID_INVALID; + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int aufs_commit_metadata(struct inode *inode) +{ + int err; + aufs_bindex_t bindex; + struct super_block *sb; + struct inode *h_inode; + int (*f)(struct inode *inode); + + sb = inode->i_sb; + si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW); + ii_write_lock_child(inode); + bindex = au_ibtop(inode); + AuDebugOn(bindex < 0); + h_inode = au_h_iptr(inode, bindex); + + f = h_inode->i_sb->s_export_op->commit_metadata; + if (f) + err = f(h_inode); + else { + struct writeback_control wbc = { + .sync_mode = WB_SYNC_ALL, + .nr_to_write = 0 /* metadata only */ + }; + + err = sync_inode(h_inode, &wbc); + } + + au_cpup_attr_timesizes(inode); + ii_write_unlock(inode); + si_read_unlock(sb); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static struct export_operations aufs_export_op = { + .fh_to_dentry = aufs_fh_to_dentry, + /* .fh_to_parent = aufs_fh_to_parent, */ + .encode_fh = aufs_encode_fh, + .commit_metadata = aufs_commit_metadata +}; + +void au_export_init(struct super_block *sb) +{ + struct au_sbinfo *sbinfo; + __u32 u; + + BUILD_BUG_ON_MSG(IS_BUILTIN(CONFIG_AUFS_FS) + && IS_MODULE(CONFIG_EXPORTFS), + AUFS_NAME ": unsupported configuration " + "CONFIG_EXPORTFS=m and CONFIG_AUFS_FS=y"); + + sb->s_export_op = &aufs_export_op; + sbinfo = au_sbi(sb); + sbinfo->si_xigen = NULL; + get_random_bytes(&u, sizeof(u)); + BUILD_BUG_ON(sizeof(u) != sizeof(int)); + atomic_set(&sbinfo->si_xigen_next, u); +} diff --git a/include/fs/aufs/f_op.c b/include/fs/aufs/f_op.c new file mode 100644 index 00000000000..00df9096a72 --- /dev/null +++ b/include/fs/aufs/f_op.c @@ -0,0 +1,817 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * file and vm operations + */ + +#include +#include +#include +#include +#include "aufs.h" + +int au_do_open_nondir(struct file *file, int flags, struct file *h_file) +{ + int err; + aufs_bindex_t bindex; + struct dentry *dentry, *h_dentry; + struct au_finfo *finfo; + struct inode *h_inode; + + FiMustWriteLock(file); + + err = 0; + dentry = file->f_path.dentry; + AuDebugOn(IS_ERR_OR_NULL(dentry)); + finfo = au_fi(file); + memset(&finfo->fi_htop, 0, sizeof(finfo->fi_htop)); + atomic_set(&finfo->fi_mmapped, 0); + bindex = au_dbtop(dentry); + if (!h_file) { + h_dentry = au_h_dptr(dentry, bindex); + err = vfsub_test_mntns(file->f_path.mnt, h_dentry->d_sb); + if (unlikely(err)) + goto out; + h_file = au_h_open(dentry, bindex, flags, file, /*force_wr*/0); + } else { + h_dentry = h_file->f_path.dentry; + err = vfsub_test_mntns(file->f_path.mnt, h_dentry->d_sb); + if (unlikely(err)) + goto out; + get_file(h_file); + } + if (IS_ERR(h_file)) + err = PTR_ERR(h_file); + else { + if ((flags & __O_TMPFILE) + && !(flags & O_EXCL)) { + h_inode = file_inode(h_file); + spin_lock(&h_inode->i_lock); + h_inode->i_state |= I_LINKABLE; + spin_unlock(&h_inode->i_lock); + } + au_set_fbtop(file, bindex); + au_set_h_fptr(file, bindex, h_file); + au_update_figen(file); + /* todo: necessary? */ + /* file->f_ra = h_file->f_ra; */ + } + +out: + return err; +} + +static int aufs_open_nondir(struct inode *inode __maybe_unused, + struct file *file) +{ + int err; + struct super_block *sb; + struct au_do_open_args args = { + .open = au_do_open_nondir + }; + + AuDbg("%pD, f_flags 0x%x, f_mode 0x%x\n", + file, vfsub_file_flags(file), file->f_mode); + + sb = file->f_path.dentry->d_sb; + si_read_lock(sb, AuLock_FLUSH); + err = au_do_open(file, &args); + si_read_unlock(sb); + return err; +} + +int aufs_release_nondir(struct inode *inode __maybe_unused, struct file *file) +{ + struct au_finfo *finfo; + aufs_bindex_t bindex; + + finfo = au_fi(file); + au_hbl_del(&finfo->fi_hlist, + &au_sbi(file->f_path.dentry->d_sb)->si_files); + bindex = finfo->fi_btop; + if (bindex >= 0) + au_set_h_fptr(file, bindex, NULL); + + au_finfo_fin(file); + return 0; +} + +/* ---------------------------------------------------------------------- */ + +static int au_do_flush_nondir(struct file *file, fl_owner_t id) +{ + int err; + struct file *h_file; + + err = 0; + h_file = au_hf_top(file); + if (h_file) + err = vfsub_flush(h_file, id); + return err; +} + +static int aufs_flush_nondir(struct file *file, fl_owner_t id) +{ + return au_do_flush(file, id, au_do_flush_nondir); +} + +/* ---------------------------------------------------------------------- */ +/* + * read and write functions acquire [fdi]_rwsem once, but release before + * mmap_sem. This is because to stop a race condition between mmap(2). + * Releasing these aufs-rwsem should be safe, no branch-mamagement (by keeping + * si_rwsem), no harmful copy-up should happen. Actually copy-up may happen in + * read functions after [fdi]_rwsem are released, but it should be harmless. + */ + +/* Callers should call au_read_post() or fput() in the end */ +struct file *au_read_pre(struct file *file, int keep_fi, unsigned int lsc) +{ + struct file *h_file; + int err; + + err = au_reval_and_lock_fdi(file, au_reopen_nondir, /*wlock*/0, lsc); + if (!err) { + di_read_unlock(file->f_path.dentry, AuLock_IR); + h_file = au_hf_top(file); + get_file(h_file); + if (!keep_fi) + fi_read_unlock(file); + } else + h_file = ERR_PTR(err); + + return h_file; +} + +static void au_read_post(struct inode *inode, struct file *h_file) +{ + /* update without lock, I don't think it a problem */ + fsstack_copy_attr_atime(inode, file_inode(h_file)); + fput(h_file); +} + +struct au_write_pre { + /* input */ + unsigned int lsc; + + /* output */ + blkcnt_t blks; + aufs_bindex_t btop; +}; + +/* + * return with iinfo is write-locked + * callers should call au_write_post() or iinfo_write_unlock() + fput() in the + * end + */ +static struct file *au_write_pre(struct file *file, int do_ready, + struct au_write_pre *wpre) +{ + struct file *h_file; + struct dentry *dentry; + int err; + unsigned int lsc; + struct au_pin pin; + + lsc = 0; + if (wpre) + lsc = wpre->lsc; + err = au_reval_and_lock_fdi(file, au_reopen_nondir, /*wlock*/1, lsc); + h_file = ERR_PTR(err); + if (unlikely(err)) + goto out; + + dentry = file->f_path.dentry; + if (do_ready) { + err = au_ready_to_write(file, -1, &pin); + if (unlikely(err)) { + h_file = ERR_PTR(err); + di_write_unlock(dentry); + goto out_fi; + } + } + + di_downgrade_lock(dentry, /*flags*/0); + if (wpre) + wpre->btop = au_fbtop(file); + h_file = au_hf_top(file); + get_file(h_file); + if (wpre) + wpre->blks = file_inode(h_file)->i_blocks; + if (do_ready) + au_unpin(&pin); + di_read_unlock(dentry, /*flags*/0); + +out_fi: + fi_write_unlock(file); +out: + return h_file; +} + +static void au_write_post(struct inode *inode, struct file *h_file, + struct au_write_pre *wpre, ssize_t written) +{ + struct inode *h_inode; + + au_cpup_attr_timesizes(inode); + AuDebugOn(au_ibtop(inode) != wpre->btop); + h_inode = file_inode(h_file); + inode->i_mode = h_inode->i_mode; + ii_write_unlock(inode); + /* AuDbg("blks %llu, %llu\n", (u64)blks, (u64)h_inode->i_blocks); */ + if (written > 0) + au_fhsm_wrote(inode->i_sb, wpre->btop, + /*force*/h_inode->i_blocks > wpre->blks); + fput(h_file); +} + +static ssize_t aufs_read(struct file *file, char __user *buf, size_t count, + loff_t *ppos) +{ + ssize_t err; + struct inode *inode; + struct file *h_file; + struct super_block *sb; + + inode = file_inode(file); + sb = inode->i_sb; + si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW); + + h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + /* filedata may be obsoleted by concurrent copyup, but no problem */ + err = vfsub_read_u(h_file, buf, count, ppos); + /* todo: necessary? */ + /* file->f_ra = h_file->f_ra; */ + au_read_post(inode, h_file); + +out: + si_read_unlock(sb); + return err; +} + +/* + * todo: very ugly + * it locks both of i_mutex and si_rwsem for read in safe. + * if the plink maintenance mode continues forever (that is the problem), + * may loop forever. + */ +static void au_mtx_and_read_lock(struct inode *inode) +{ + int err; + struct super_block *sb = inode->i_sb; + + while (1) { + inode_lock(inode); + err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM); + if (!err) + break; + inode_unlock(inode); + si_read_lock(sb, AuLock_NOPLMW); + si_read_unlock(sb); + } +} + +static ssize_t aufs_write(struct file *file, const char __user *ubuf, + size_t count, loff_t *ppos) +{ + ssize_t err; + struct au_write_pre wpre; + struct inode *inode; + struct file *h_file; + char __user *buf = (char __user *)ubuf; + + inode = file_inode(file); + au_mtx_and_read_lock(inode); + + wpre.lsc = 0; + h_file = au_write_pre(file, /*do_ready*/1, &wpre); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + err = vfsub_write_u(h_file, buf, count, ppos); + au_write_post(inode, h_file, &wpre, err); + +out: + si_read_unlock(inode->i_sb); + inode_unlock(inode); + return err; +} + +static ssize_t au_do_iter(struct file *h_file, int rw, struct kiocb *kio, + struct iov_iter *iov_iter) +{ + ssize_t err; + struct file *file; + ssize_t (*iter)(struct kiocb *, struct iov_iter *); + + err = security_file_permission(h_file, rw); + if (unlikely(err)) + goto out; + + err = -ENOSYS; + iter = NULL; + if (rw == MAY_READ) + iter = h_file->f_op->read_iter; + else if (rw == MAY_WRITE) + iter = h_file->f_op->write_iter; + + file = kio->ki_filp; + kio->ki_filp = h_file; + if (iter) { + lockdep_off(); + err = iter(kio, iov_iter); + lockdep_on(); + } else + /* currently there is no such fs */ + WARN_ON_ONCE(1); + kio->ki_filp = file; + +out: + return err; +} + +static ssize_t aufs_read_iter(struct kiocb *kio, struct iov_iter *iov_iter) +{ + ssize_t err; + struct file *file, *h_file; + struct inode *inode; + struct super_block *sb; + + file = kio->ki_filp; + inode = file_inode(file); + sb = inode->i_sb; + si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW); + + h_file = au_read_pre(file, /*keep_fi*/1, /*lsc*/0); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + if (au_test_loopback_kthread()) { + au_warn_loopback(h_file->f_path.dentry->d_sb); + if (file->f_mapping != h_file->f_mapping) { + file->f_mapping = h_file->f_mapping; + smp_mb(); /* unnecessary? */ + } + } + fi_read_unlock(file); + + err = au_do_iter(h_file, MAY_READ, kio, iov_iter); + /* todo: necessary? */ + /* file->f_ra = h_file->f_ra; */ + au_read_post(inode, h_file); + +out: + si_read_unlock(sb); + return err; +} + +static ssize_t aufs_write_iter(struct kiocb *kio, struct iov_iter *iov_iter) +{ + ssize_t err; + struct au_write_pre wpre; + struct inode *inode; + struct file *file, *h_file; + + file = kio->ki_filp; + inode = file_inode(file); + au_mtx_and_read_lock(inode); + + wpre.lsc = 0; + h_file = au_write_pre(file, /*do_ready*/1, &wpre); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + err = au_do_iter(h_file, MAY_WRITE, kio, iov_iter); + au_write_post(inode, h_file, &wpre, err); + +out: + si_read_unlock(inode->i_sb); + inode_unlock(inode); + return err; +} + +static ssize_t aufs_splice_read(struct file *file, loff_t *ppos, + struct pipe_inode_info *pipe, size_t len, + unsigned int flags) +{ + ssize_t err; + struct file *h_file; + struct inode *inode; + struct super_block *sb; + + inode = file_inode(file); + sb = inode->i_sb; + si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW); + + h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + err = vfsub_splice_to(h_file, ppos, pipe, len, flags); + /* todo: necessasry? */ + /* file->f_ra = h_file->f_ra; */ + au_read_post(inode, h_file); + +out: + si_read_unlock(sb); + return err; +} + +static ssize_t +aufs_splice_write(struct pipe_inode_info *pipe, struct file *file, loff_t *ppos, + size_t len, unsigned int flags) +{ + ssize_t err; + struct au_write_pre wpre; + struct inode *inode; + struct file *h_file; + + inode = file_inode(file); + au_mtx_and_read_lock(inode); + + wpre.lsc = 0; + h_file = au_write_pre(file, /*do_ready*/1, &wpre); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + err = vfsub_splice_from(pipe, h_file, ppos, len, flags); + au_write_post(inode, h_file, &wpre, err); + +out: + si_read_unlock(inode->i_sb); + inode_unlock(inode); + return err; +} + +static long aufs_fallocate(struct file *file, int mode, loff_t offset, + loff_t len) +{ + long err; + struct au_write_pre wpre; + struct inode *inode; + struct file *h_file; + + inode = file_inode(file); + au_mtx_and_read_lock(inode); + + wpre.lsc = 0; + h_file = au_write_pre(file, /*do_ready*/1, &wpre); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + lockdep_off(); + err = vfs_fallocate(h_file, mode, offset, len); + lockdep_on(); + au_write_post(inode, h_file, &wpre, /*written*/1); + +out: + si_read_unlock(inode->i_sb); + inode_unlock(inode); + return err; +} + +static ssize_t aufs_copy_file_range(struct file *src, loff_t src_pos, + struct file *dst, loff_t dst_pos, + size_t len, unsigned int flags) +{ + ssize_t err; + struct au_write_pre wpre; + enum { SRC, DST }; + struct { + struct inode *inode; + struct file *h_file; + struct super_block *h_sb; + } a[2]; +#define a_src a[SRC] +#define a_dst a[DST] + + err = -EINVAL; + a_src.inode = file_inode(src); + if (unlikely(!S_ISREG(a_src.inode->i_mode))) + goto out; + a_dst.inode = file_inode(dst); + if (unlikely(!S_ISREG(a_dst.inode->i_mode))) + goto out; + + au_mtx_and_read_lock(a_dst.inode); + /* + * in order to match the order in di_write_lock2_{child,parent}(), + * use f_path.dentry for this comparision. + */ + if (src->f_path.dentry < dst->f_path.dentry) { + a_src.h_file = au_read_pre(src, /*keep_fi*/1, AuLsc_FI_1); + err = PTR_ERR(a_src.h_file); + if (IS_ERR(a_src.h_file)) + goto out_si; + + wpre.lsc = AuLsc_FI_2; + a_dst.h_file = au_write_pre(dst, /*do_ready*/1, &wpre); + err = PTR_ERR(a_dst.h_file); + if (IS_ERR(a_dst.h_file)) { + au_read_post(a_src.inode, a_src.h_file); + goto out_si; + } + } else { + wpre.lsc = AuLsc_FI_1; + a_dst.h_file = au_write_pre(dst, /*do_ready*/1, &wpre); + err = PTR_ERR(a_dst.h_file); + if (IS_ERR(a_dst.h_file)) + goto out_si; + + a_src.h_file = au_read_pre(src, /*keep_fi*/1, AuLsc_FI_2); + err = PTR_ERR(a_src.h_file); + if (IS_ERR(a_src.h_file)) { + au_write_post(a_dst.inode, a_dst.h_file, &wpre, + /*written*/0); + goto out_si; + } + } + + err = -EXDEV; + a_src.h_sb = file_inode(a_src.h_file)->i_sb; + a_dst.h_sb = file_inode(a_dst.h_file)->i_sb; + if (unlikely(a_src.h_sb != a_dst.h_sb)) { + AuDbgFile(src); + AuDbgFile(dst); + goto out_file; + } + + err = vfsub_copy_file_range(a_src.h_file, src_pos, a_dst.h_file, + dst_pos, len, flags); + +out_file: + au_write_post(a_dst.inode, a_dst.h_file, &wpre, err); + fi_read_unlock(src); + au_read_post(a_src.inode, a_src.h_file); +out_si: + si_read_unlock(a_dst.inode->i_sb); + inode_unlock(a_dst.inode); +out: + return err; +#undef a_src +#undef a_dst +} + +/* ---------------------------------------------------------------------- */ + +/* + * The locking order around current->mmap_sem. + * - in most and regular cases + * file I/O syscall -- aufs_read() or something + * -- si_rwsem for read -- mmap_sem + * (Note that [fdi]i_rwsem are released before mmap_sem). + * - in mmap case + * mmap(2) -- mmap_sem -- aufs_mmap() -- si_rwsem for read -- [fdi]i_rwsem + * This AB-BA order is definitly bad, but is not a problem since "si_rwsem for + * read" allows muliple processes to acquire it and [fdi]i_rwsem are not held in + * file I/O. Aufs needs to stop lockdep in aufs_mmap() though. + * It means that when aufs acquires si_rwsem for write, the process should never + * acquire mmap_sem. + * + * Actually aufs_iterate() holds [fdi]i_rwsem before mmap_sem, but this is not a + * problem either since any directory is not able to be mmap-ed. + * The similar scenario is applied to aufs_readlink() too. + */ + +#if 0 /* stop calling security_file_mmap() */ +/* cf. linux/include/linux/mman.h: calc_vm_prot_bits() */ +#define AuConv_VM_PROT(f, b) _calc_vm_trans(f, VM_##b, PROT_##b) + +static unsigned long au_arch_prot_conv(unsigned long flags) +{ + /* currently ppc64 only */ +#ifdef CONFIG_PPC64 + /* cf. linux/arch/powerpc/include/asm/mman.h */ + AuDebugOn(arch_calc_vm_prot_bits(-1) != VM_SAO); + return AuConv_VM_PROT(flags, SAO); +#else + AuDebugOn(arch_calc_vm_prot_bits(-1)); + return 0; +#endif +} + +static unsigned long au_prot_conv(unsigned long flags) +{ + return AuConv_VM_PROT(flags, READ) + | AuConv_VM_PROT(flags, WRITE) + | AuConv_VM_PROT(flags, EXEC) + | au_arch_prot_conv(flags); +} + +/* cf. linux/include/linux/mman.h: calc_vm_flag_bits() */ +#define AuConv_VM_MAP(f, b) _calc_vm_trans(f, VM_##b, MAP_##b) + +static unsigned long au_flag_conv(unsigned long flags) +{ + return AuConv_VM_MAP(flags, GROWSDOWN) + | AuConv_VM_MAP(flags, DENYWRITE) + | AuConv_VM_MAP(flags, LOCKED); +} +#endif + +static int aufs_mmap(struct file *file, struct vm_area_struct *vma) +{ + int err; + const unsigned char wlock + = (file->f_mode & FMODE_WRITE) && (vma->vm_flags & VM_SHARED); + struct super_block *sb; + struct file *h_file; + struct inode *inode; + + AuDbgVmRegion(file, vma); + + inode = file_inode(file); + sb = inode->i_sb; + lockdep_off(); + si_read_lock(sb, AuLock_NOPLMW); + + h_file = au_write_pre(file, wlock, /*wpre*/NULL); + lockdep_on(); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + err = 0; + au_set_mmapped(file); + au_vm_file_reset(vma, h_file); + /* + * we cannot call security_mmap_file() here since it may acquire + * mmap_sem or i_mutex. + * + * err = security_mmap_file(h_file, au_prot_conv(vma->vm_flags), + * au_flag_conv(vma->vm_flags)); + */ + if (!err) + err = call_mmap(h_file, vma); + if (!err) { + au_vm_prfile_set(vma, file); + fsstack_copy_attr_atime(inode, file_inode(h_file)); + goto out_fput; /* success */ + } + au_unset_mmapped(file); + au_vm_file_reset(vma, file); + +out_fput: + lockdep_off(); + ii_write_unlock(inode); + lockdep_on(); + fput(h_file); +out: + lockdep_off(); + si_read_unlock(sb); + lockdep_on(); + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int aufs_fsync_nondir(struct file *file, loff_t start, loff_t end, + int datasync) +{ + int err; + struct au_write_pre wpre; + struct inode *inode; + struct file *h_file; + + err = 0; /* -EBADF; */ /* posix? */ + if (unlikely(!(file->f_mode & FMODE_WRITE))) + goto out; + + inode = file_inode(file); + au_mtx_and_read_lock(inode); + + wpre.lsc = 0; + h_file = au_write_pre(file, /*do_ready*/1, &wpre); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out_unlock; + + err = vfsub_fsync(h_file, &h_file->f_path, datasync); + au_write_post(inode, h_file, &wpre, /*written*/0); + +out_unlock: + si_read_unlock(inode->i_sb); + inode_unlock(inode); +out: + return err; +} + +static int aufs_fasync(int fd, struct file *file, int flag) +{ + int err; + struct file *h_file; + struct super_block *sb; + + sb = file->f_path.dentry->d_sb; + si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW); + + h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + if (h_file->f_op->fasync) + err = h_file->f_op->fasync(fd, h_file, flag); + fput(h_file); /* instead of au_read_post() */ + +out: + si_read_unlock(sb); + return err; +} + +static int aufs_setfl(struct file *file, unsigned long arg) +{ + int err; + struct file *h_file; + struct super_block *sb; + + sb = file->f_path.dentry->d_sb; + si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW); + + h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + /* stop calling h_file->fasync */ + arg |= vfsub_file_flags(file) & FASYNC; + err = setfl(/*unused fd*/-1, h_file, arg); + fput(h_file); /* instead of au_read_post() */ + +out: + si_read_unlock(sb); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* no one supports this operation, currently */ +#if 0 +static ssize_t aufs_sendpage(struct file *file, struct page *page, int offset, + size_t len, loff_t *pos, int more) +{ +} +#endif + +/* ---------------------------------------------------------------------- */ + +const struct file_operations aufs_file_fop = { + .owner = THIS_MODULE, + + .llseek = default_llseek, + + .read = aufs_read, + .write = aufs_write, + .read_iter = aufs_read_iter, + .write_iter = aufs_write_iter, + +#ifdef CONFIG_AUFS_POLL + .poll = aufs_poll, +#endif + .unlocked_ioctl = aufs_ioctl_nondir, +#ifdef CONFIG_COMPAT + .compat_ioctl = aufs_compat_ioctl_nondir, +#endif + .mmap = aufs_mmap, + .open = aufs_open_nondir, + .flush = aufs_flush_nondir, + .release = aufs_release_nondir, + .fsync = aufs_fsync_nondir, + .fasync = aufs_fasync, + /* .sendpage = aufs_sendpage, */ + .setfl = aufs_setfl, + .splice_write = aufs_splice_write, + .splice_read = aufs_splice_read, +#if 0 + .aio_splice_write = aufs_aio_splice_write, + .aio_splice_read = aufs_aio_splice_read, +#endif + .fallocate = aufs_fallocate, + .copy_file_range = aufs_copy_file_range +}; diff --git a/include/fs/aufs/fhsm.c b/include/fs/aufs/fhsm.c new file mode 100644 index 00000000000..cf0503baa0c --- /dev/null +++ b/include/fs/aufs/fhsm.c @@ -0,0 +1,427 @@ +/* + * Copyright (C) 2011-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/* + * File-based Hierarchy Storage Management + */ + +#include +#include +#include +#include +#include "aufs.h" + +static aufs_bindex_t au_fhsm_bottom(struct super_block *sb) +{ + struct au_sbinfo *sbinfo; + struct au_fhsm *fhsm; + + SiMustAnyLock(sb); + + sbinfo = au_sbi(sb); + fhsm = &sbinfo->si_fhsm; + AuDebugOn(!fhsm); + return fhsm->fhsm_bottom; +} + +void au_fhsm_set_bottom(struct super_block *sb, aufs_bindex_t bindex) +{ + struct au_sbinfo *sbinfo; + struct au_fhsm *fhsm; + + SiMustWriteLock(sb); + + sbinfo = au_sbi(sb); + fhsm = &sbinfo->si_fhsm; + AuDebugOn(!fhsm); + fhsm->fhsm_bottom = bindex; +} + +/* ---------------------------------------------------------------------- */ + +static int au_fhsm_test_jiffy(struct au_sbinfo *sbinfo, struct au_branch *br) +{ + struct au_br_fhsm *bf; + + bf = br->br_fhsm; + MtxMustLock(&bf->bf_lock); + + return !bf->bf_readable + || time_after(jiffies, + bf->bf_jiffy + sbinfo->si_fhsm.fhsm_expire); +} + +/* ---------------------------------------------------------------------- */ + +static void au_fhsm_notify(struct super_block *sb, int val) +{ + struct au_sbinfo *sbinfo; + struct au_fhsm *fhsm; + + SiMustAnyLock(sb); + + sbinfo = au_sbi(sb); + fhsm = &sbinfo->si_fhsm; + if (au_fhsm_pid(fhsm) + && atomic_read(&fhsm->fhsm_readable) != -1) { + atomic_set(&fhsm->fhsm_readable, val); + if (val) + wake_up(&fhsm->fhsm_wqh); + } +} + +static int au_fhsm_stfs(struct super_block *sb, aufs_bindex_t bindex, + struct aufs_stfs *rstfs, int do_lock, int do_notify) +{ + int err; + struct au_branch *br; + struct au_br_fhsm *bf; + + br = au_sbr(sb, bindex); + AuDebugOn(au_br_rdonly(br)); + bf = br->br_fhsm; + AuDebugOn(!bf); + + if (do_lock) + mutex_lock(&bf->bf_lock); + else + MtxMustLock(&bf->bf_lock); + + /* sb->s_root for NFS is unreliable */ + err = au_br_stfs(br, &bf->bf_stfs); + if (unlikely(err)) { + AuErr1("FHSM failed (%d), b%d, ignored.\n", bindex, err); + goto out; + } + + bf->bf_jiffy = jiffies; + bf->bf_readable = 1; + if (do_notify) + au_fhsm_notify(sb, /*val*/1); + if (rstfs) + *rstfs = bf->bf_stfs; + +out: + if (do_lock) + mutex_unlock(&bf->bf_lock); + au_fhsm_notify(sb, /*val*/1); + + return err; +} + +void au_fhsm_wrote(struct super_block *sb, aufs_bindex_t bindex, int force) +{ + int err; + struct au_sbinfo *sbinfo; + struct au_fhsm *fhsm; + struct au_branch *br; + struct au_br_fhsm *bf; + + AuDbg("b%d, force %d\n", bindex, force); + SiMustAnyLock(sb); + + sbinfo = au_sbi(sb); + fhsm = &sbinfo->si_fhsm; + if (!au_ftest_si(sbinfo, FHSM) + || fhsm->fhsm_bottom == bindex) + return; + + br = au_sbr(sb, bindex); + bf = br->br_fhsm; + AuDebugOn(!bf); + mutex_lock(&bf->bf_lock); + if (force + || au_fhsm_pid(fhsm) + || au_fhsm_test_jiffy(sbinfo, br)) + err = au_fhsm_stfs(sb, bindex, /*rstfs*/NULL, /*do_lock*/0, + /*do_notify*/1); + mutex_unlock(&bf->bf_lock); +} + +void au_fhsm_wrote_all(struct super_block *sb, int force) +{ + aufs_bindex_t bindex, bbot; + struct au_branch *br; + + /* exclude the bottom */ + bbot = au_fhsm_bottom(sb); + for (bindex = 0; bindex < bbot; bindex++) { + br = au_sbr(sb, bindex); + if (au_br_fhsm(br->br_perm)) + au_fhsm_wrote(sb, bindex, force); + } +} + +/* ---------------------------------------------------------------------- */ + +static unsigned int au_fhsm_poll(struct file *file, + struct poll_table_struct *wait) +{ + unsigned int mask; + struct au_sbinfo *sbinfo; + struct au_fhsm *fhsm; + + mask = 0; + sbinfo = file->private_data; + fhsm = &sbinfo->si_fhsm; + poll_wait(file, &fhsm->fhsm_wqh, wait); + if (atomic_read(&fhsm->fhsm_readable)) + mask = POLLIN /* | POLLRDNORM */; + + if (!mask) + AuDbg("mask 0x%x\n", mask); + return mask; +} + +static int au_fhsm_do_read_one(struct aufs_stbr __user *stbr, + struct aufs_stfs *stfs, __s16 brid) +{ + int err; + + err = copy_to_user(&stbr->stfs, stfs, sizeof(*stfs)); + if (!err) + err = __put_user(brid, &stbr->brid); + if (unlikely(err)) + err = -EFAULT; + + return err; +} + +static ssize_t au_fhsm_do_read(struct super_block *sb, + struct aufs_stbr __user *stbr, size_t count) +{ + ssize_t err; + int nstbr; + aufs_bindex_t bindex, bbot; + struct au_branch *br; + struct au_br_fhsm *bf; + + /* except the bottom branch */ + err = 0; + nstbr = 0; + bbot = au_fhsm_bottom(sb); + for (bindex = 0; !err && bindex < bbot; bindex++) { + br = au_sbr(sb, bindex); + if (!au_br_fhsm(br->br_perm)) + continue; + + bf = br->br_fhsm; + mutex_lock(&bf->bf_lock); + if (bf->bf_readable) { + err = -EFAULT; + if (count >= sizeof(*stbr)) + err = au_fhsm_do_read_one(stbr++, &bf->bf_stfs, + br->br_id); + if (!err) { + bf->bf_readable = 0; + count -= sizeof(*stbr); + nstbr++; + } + } + mutex_unlock(&bf->bf_lock); + } + if (!err) + err = sizeof(*stbr) * nstbr; + + return err; +} + +static ssize_t au_fhsm_read(struct file *file, char __user *buf, size_t count, + loff_t *pos) +{ + ssize_t err; + int readable; + aufs_bindex_t nfhsm, bindex, bbot; + struct au_sbinfo *sbinfo; + struct au_fhsm *fhsm; + struct au_branch *br; + struct super_block *sb; + + err = 0; + sbinfo = file->private_data; + fhsm = &sbinfo->si_fhsm; +need_data: + spin_lock_irq(&fhsm->fhsm_wqh.lock); + if (!atomic_read(&fhsm->fhsm_readable)) { + if (vfsub_file_flags(file) & O_NONBLOCK) + err = -EAGAIN; + else + err = wait_event_interruptible_locked_irq + (fhsm->fhsm_wqh, + atomic_read(&fhsm->fhsm_readable)); + } + spin_unlock_irq(&fhsm->fhsm_wqh.lock); + if (unlikely(err)) + goto out; + + /* sb may already be dead */ + au_rw_read_lock(&sbinfo->si_rwsem); + readable = atomic_read(&fhsm->fhsm_readable); + if (readable > 0) { + sb = sbinfo->si_sb; + AuDebugOn(!sb); + /* exclude the bottom branch */ + nfhsm = 0; + bbot = au_fhsm_bottom(sb); + for (bindex = 0; bindex < bbot; bindex++) { + br = au_sbr(sb, bindex); + if (au_br_fhsm(br->br_perm)) + nfhsm++; + } + err = -EMSGSIZE; + if (nfhsm * sizeof(struct aufs_stbr) <= count) { + atomic_set(&fhsm->fhsm_readable, 0); + err = au_fhsm_do_read(sbinfo->si_sb, (void __user *)buf, + count); + } + } + au_rw_read_unlock(&sbinfo->si_rwsem); + if (!readable) + goto need_data; + +out: + return err; +} + +static int au_fhsm_release(struct inode *inode, struct file *file) +{ + struct au_sbinfo *sbinfo; + struct au_fhsm *fhsm; + + /* sb may already be dead */ + sbinfo = file->private_data; + fhsm = &sbinfo->si_fhsm; + spin_lock(&fhsm->fhsm_spin); + fhsm->fhsm_pid = 0; + spin_unlock(&fhsm->fhsm_spin); + kobject_put(&sbinfo->si_kobj); + + return 0; +} + +static const struct file_operations au_fhsm_fops = { + .owner = THIS_MODULE, + .llseek = noop_llseek, + .read = au_fhsm_read, + .poll = au_fhsm_poll, + .release = au_fhsm_release +}; + +int au_fhsm_fd(struct super_block *sb, int oflags) +{ + int err, fd; + struct au_sbinfo *sbinfo; + struct au_fhsm *fhsm; + + err = -EPERM; + if (unlikely(!capable(CAP_SYS_ADMIN))) + goto out; + + err = -EINVAL; + if (unlikely(oflags & ~(O_CLOEXEC | O_NONBLOCK))) + goto out; + + err = 0; + sbinfo = au_sbi(sb); + fhsm = &sbinfo->si_fhsm; + spin_lock(&fhsm->fhsm_spin); + if (!fhsm->fhsm_pid) + fhsm->fhsm_pid = current->pid; + else + err = -EBUSY; + spin_unlock(&fhsm->fhsm_spin); + if (unlikely(err)) + goto out; + + oflags |= O_RDONLY; + /* oflags |= FMODE_NONOTIFY; */ + fd = anon_inode_getfd("[aufs_fhsm]", &au_fhsm_fops, sbinfo, oflags); + err = fd; + if (unlikely(fd < 0)) + goto out_pid; + + /* succeed reglardless 'fhsm' status */ + kobject_get(&sbinfo->si_kobj); + si_noflush_read_lock(sb); + if (au_ftest_si(sbinfo, FHSM)) + au_fhsm_wrote_all(sb, /*force*/0); + si_read_unlock(sb); + goto out; /* success */ + +out_pid: + spin_lock(&fhsm->fhsm_spin); + fhsm->fhsm_pid = 0; + spin_unlock(&fhsm->fhsm_spin); +out: + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +int au_fhsm_br_alloc(struct au_branch *br) +{ + int err; + + err = 0; + br->br_fhsm = kmalloc(sizeof(*br->br_fhsm), GFP_NOFS); + if (br->br_fhsm) + au_br_fhsm_init(br->br_fhsm); + else + err = -ENOMEM; + + return err; +} + +/* ---------------------------------------------------------------------- */ + +void au_fhsm_fin(struct super_block *sb) +{ + au_fhsm_notify(sb, /*val*/-1); +} + +void au_fhsm_init(struct au_sbinfo *sbinfo) +{ + struct au_fhsm *fhsm; + + fhsm = &sbinfo->si_fhsm; + spin_lock_init(&fhsm->fhsm_spin); + init_waitqueue_head(&fhsm->fhsm_wqh); + atomic_set(&fhsm->fhsm_readable, 0); + fhsm->fhsm_expire + = msecs_to_jiffies(AUFS_FHSM_CACHE_DEF_SEC * MSEC_PER_SEC); + fhsm->fhsm_bottom = -1; +} + +void au_fhsm_set(struct au_sbinfo *sbinfo, unsigned int sec) +{ + sbinfo->si_fhsm.fhsm_expire + = msecs_to_jiffies(sec * MSEC_PER_SEC); +} + +void au_fhsm_show(struct seq_file *seq, struct au_sbinfo *sbinfo) +{ + unsigned int u; + + if (!au_ftest_si(sbinfo, FHSM)) + return; + + u = jiffies_to_msecs(sbinfo->si_fhsm.fhsm_expire) / MSEC_PER_SEC; + if (u != AUFS_FHSM_CACHE_DEF_SEC) + seq_printf(seq, ",fhsm_sec=%u", u); +} diff --git a/include/fs/aufs/file.c b/include/fs/aufs/file.c new file mode 100644 index 00000000000..4646b4b02b5 --- /dev/null +++ b/include/fs/aufs/file.c @@ -0,0 +1,856 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * handling file/dir, and address_space operation + */ + +#ifdef CONFIG_AUFS_DEBUG +#include +#endif +#include +#include "aufs.h" + +/* drop flags for writing */ +unsigned int au_file_roflags(unsigned int flags) +{ + flags &= ~(O_WRONLY | O_RDWR | O_APPEND | O_CREAT | O_TRUNC); + flags |= O_RDONLY | O_NOATIME; + return flags; +} + +/* common functions to regular file and dir */ +struct file *au_h_open(struct dentry *dentry, aufs_bindex_t bindex, int flags, + struct file *file, int force_wr) +{ + struct file *h_file; + struct dentry *h_dentry; + struct inode *h_inode; + struct super_block *sb; + struct au_branch *br; + struct path h_path; + int err; + + /* a race condition can happen between open and unlink/rmdir */ + h_file = ERR_PTR(-ENOENT); + h_dentry = au_h_dptr(dentry, bindex); + if (au_test_nfsd() && (!h_dentry || d_is_negative(h_dentry))) + goto out; + h_inode = d_inode(h_dentry); + spin_lock(&h_dentry->d_lock); + err = (!d_unhashed(dentry) && d_unlinked(h_dentry)) + /* || !d_inode(dentry)->i_nlink */ + ; + spin_unlock(&h_dentry->d_lock); + if (unlikely(err)) + goto out; + + sb = dentry->d_sb; + br = au_sbr(sb, bindex); + err = au_br_test_oflag(flags, br); + h_file = ERR_PTR(err); + if (unlikely(err)) + goto out; + + /* drop flags for writing */ + if (au_test_ro(sb, bindex, d_inode(dentry))) { + if (force_wr && !(flags & O_WRONLY)) + force_wr = 0; + flags = au_file_roflags(flags); + if (force_wr) { + h_file = ERR_PTR(-EROFS); + flags = au_file_roflags(flags); + if (unlikely(vfsub_native_ro(h_inode) + || IS_APPEND(h_inode))) + goto out; + flags &= ~O_ACCMODE; + flags |= O_WRONLY; + } + } + flags &= ~O_CREAT; + au_br_get(br); + h_path.dentry = h_dentry; + h_path.mnt = au_br_mnt(br); + h_file = vfsub_dentry_open(&h_path, flags); + if (IS_ERR(h_file)) + goto out_br; + + if (flags & __FMODE_EXEC) { + err = deny_write_access(h_file); + if (unlikely(err)) { + fput(h_file); + h_file = ERR_PTR(err); + goto out_br; + } + } + fsnotify_open(h_file); + goto out; /* success */ + +out_br: + au_br_put(br); +out: + return h_file; +} + +static int au_cmoo(struct dentry *dentry) +{ + int err, cmoo, matched; + unsigned int udba; + struct path h_path; + struct au_pin pin; + struct au_cp_generic cpg = { + .dentry = dentry, + .bdst = -1, + .bsrc = -1, + .len = -1, + .pin = &pin, + .flags = AuCpup_DTIME | AuCpup_HOPEN + }; + struct inode *delegated; + struct super_block *sb; + struct au_sbinfo *sbinfo; + struct au_fhsm *fhsm; + pid_t pid; + struct au_branch *br; + struct dentry *parent; + struct au_hinode *hdir; + + DiMustWriteLock(dentry); + IiMustWriteLock(d_inode(dentry)); + + err = 0; + if (IS_ROOT(dentry)) + goto out; + cpg.bsrc = au_dbtop(dentry); + if (!cpg.bsrc) + goto out; + + sb = dentry->d_sb; + sbinfo = au_sbi(sb); + fhsm = &sbinfo->si_fhsm; + pid = au_fhsm_pid(fhsm); + rcu_read_lock(); + matched = (pid + && (current->pid == pid + || rcu_dereference(current->real_parent)->pid == pid)); + rcu_read_unlock(); + if (matched) + goto out; + + br = au_sbr(sb, cpg.bsrc); + cmoo = au_br_cmoo(br->br_perm); + if (!cmoo) + goto out; + if (!d_is_reg(dentry)) + cmoo &= AuBrAttr_COO_ALL; + if (!cmoo) + goto out; + + parent = dget_parent(dentry); + di_write_lock_parent(parent); + err = au_wbr_do_copyup_bu(dentry, cpg.bsrc - 1); + cpg.bdst = err; + if (unlikely(err < 0)) { + err = 0; /* there is no upper writable branch */ + goto out_dgrade; + } + AuDbg("bsrc %d, bdst %d\n", cpg.bsrc, cpg.bdst); + + /* do not respect the coo attrib for the target branch */ + err = au_cpup_dirs(dentry, cpg.bdst); + if (unlikely(err)) + goto out_dgrade; + + di_downgrade_lock(parent, AuLock_IR); + udba = au_opt_udba(sb); + err = au_pin(&pin, dentry, cpg.bdst, udba, + AuPin_DI_LOCKED | AuPin_MNT_WRITE); + if (unlikely(err)) + goto out_parent; + + err = au_sio_cpup_simple(&cpg); + au_unpin(&pin); + if (unlikely(err)) + goto out_parent; + if (!(cmoo & AuBrWAttr_MOO)) + goto out_parent; /* success */ + + err = au_pin(&pin, dentry, cpg.bsrc, udba, + AuPin_DI_LOCKED | AuPin_MNT_WRITE); + if (unlikely(err)) + goto out_parent; + + h_path.mnt = au_br_mnt(br); + h_path.dentry = au_h_dptr(dentry, cpg.bsrc); + hdir = au_hi(d_inode(parent), cpg.bsrc); + delegated = NULL; + err = vfsub_unlink(hdir->hi_inode, &h_path, &delegated, /*force*/1); + au_unpin(&pin); + /* todo: keep h_dentry or not? */ + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal unlink\n"); + iput(delegated); + } + if (unlikely(err)) { + pr_err("unlink %pd after coo failed (%d), ignored\n", + dentry, err); + err = 0; + } + goto out_parent; /* success */ + +out_dgrade: + di_downgrade_lock(parent, AuLock_IR); +out_parent: + di_read_unlock(parent, AuLock_IR); + dput(parent); +out: + AuTraceErr(err); + return err; +} + +int au_do_open(struct file *file, struct au_do_open_args *args) +{ + int err, aopen = args->aopen; + struct dentry *dentry; + struct au_finfo *finfo; + + if (!aopen) + err = au_finfo_init(file, args->fidir); + else { + lockdep_off(); + err = au_finfo_init(file, args->fidir); + lockdep_on(); + } + if (unlikely(err)) + goto out; + + dentry = file->f_path.dentry; + AuDebugOn(IS_ERR_OR_NULL(dentry)); + di_write_lock_child(dentry); + err = au_cmoo(dentry); + di_downgrade_lock(dentry, AuLock_IR); + if (!err) { + if (!aopen) + err = args->open(file, vfsub_file_flags(file), NULL); + else { + lockdep_off(); + err = args->open(file, vfsub_file_flags(file), NULL); + lockdep_on(); + } + } + di_read_unlock(dentry, AuLock_IR); + + finfo = au_fi(file); + if (!err) { + finfo->fi_file = file; + au_hbl_add(&finfo->fi_hlist, + &au_sbi(file->f_path.dentry->d_sb)->si_files); + } + if (!aopen) + fi_write_unlock(file); + else { + lockdep_off(); + fi_write_unlock(file); + lockdep_on(); + } + if (unlikely(err)) { + finfo->fi_hdir = NULL; + au_finfo_fin(file); + } + +out: + AuTraceErr(err); + return err; +} + +int au_reopen_nondir(struct file *file) +{ + int err; + aufs_bindex_t btop; + struct dentry *dentry; + struct file *h_file, *h_file_tmp; + + dentry = file->f_path.dentry; + btop = au_dbtop(dentry); + h_file_tmp = NULL; + if (au_fbtop(file) == btop) { + h_file = au_hf_top(file); + if (file->f_mode == h_file->f_mode) + return 0; /* success */ + h_file_tmp = h_file; + get_file(h_file_tmp); + au_set_h_fptr(file, btop, NULL); + } + AuDebugOn(au_fi(file)->fi_hdir); + /* + * it can happen + * file exists on both of rw and ro + * open --> dbtop and fbtop are both 0 + * prepend a branch as rw, "rw" become ro + * remove rw/file + * delete the top branch, "rw" becomes rw again + * --> dbtop is 1, fbtop is still 0 + * write --> fbtop is 0 but dbtop is 1 + */ + /* AuDebugOn(au_fbtop(file) < btop); */ + + h_file = au_h_open(dentry, btop, vfsub_file_flags(file) & ~O_TRUNC, + file, /*force_wr*/0); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) { + if (h_file_tmp) { + au_sbr_get(dentry->d_sb, btop); + au_set_h_fptr(file, btop, h_file_tmp); + h_file_tmp = NULL; + } + goto out; /* todo: close all? */ + } + + err = 0; + au_set_fbtop(file, btop); + au_set_h_fptr(file, btop, h_file); + au_update_figen(file); + /* todo: necessary? */ + /* file->f_ra = h_file->f_ra; */ + +out: + if (h_file_tmp) + fput(h_file_tmp); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int au_reopen_wh(struct file *file, aufs_bindex_t btgt, + struct dentry *hi_wh) +{ + int err; + aufs_bindex_t btop; + struct au_dinfo *dinfo; + struct dentry *h_dentry; + struct au_hdentry *hdp; + + dinfo = au_di(file->f_path.dentry); + AuRwMustWriteLock(&dinfo->di_rwsem); + + btop = dinfo->di_btop; + dinfo->di_btop = btgt; + hdp = au_hdentry(dinfo, btgt); + h_dentry = hdp->hd_dentry; + hdp->hd_dentry = hi_wh; + err = au_reopen_nondir(file); + hdp->hd_dentry = h_dentry; + dinfo->di_btop = btop; + + return err; +} + +static int au_ready_to_write_wh(struct file *file, loff_t len, + aufs_bindex_t bcpup, struct au_pin *pin) +{ + int err; + struct inode *inode, *h_inode; + struct dentry *h_dentry, *hi_wh; + struct au_cp_generic cpg = { + .dentry = file->f_path.dentry, + .bdst = bcpup, + .bsrc = -1, + .len = len, + .pin = pin + }; + + au_update_dbtop(cpg.dentry); + inode = d_inode(cpg.dentry); + h_inode = NULL; + if (au_dbtop(cpg.dentry) <= bcpup + && au_dbbot(cpg.dentry) >= bcpup) { + h_dentry = au_h_dptr(cpg.dentry, bcpup); + if (h_dentry && d_is_positive(h_dentry)) + h_inode = d_inode(h_dentry); + } + hi_wh = au_hi_wh(inode, bcpup); + if (!hi_wh && !h_inode) + err = au_sio_cpup_wh(&cpg, file); + else + /* already copied-up after unlink */ + err = au_reopen_wh(file, bcpup, hi_wh); + + if (!err + && (inode->i_nlink > 1 + || (inode->i_state & I_LINKABLE)) + && au_opt_test(au_mntflags(cpg.dentry->d_sb), PLINK)) + au_plink_append(inode, bcpup, au_h_dptr(cpg.dentry, bcpup)); + + return err; +} + +/* + * prepare the @file for writing. + */ +int au_ready_to_write(struct file *file, loff_t len, struct au_pin *pin) +{ + int err; + aufs_bindex_t dbtop; + struct dentry *parent; + struct inode *inode; + struct super_block *sb; + struct file *h_file; + struct au_cp_generic cpg = { + .dentry = file->f_path.dentry, + .bdst = -1, + .bsrc = -1, + .len = len, + .pin = pin, + .flags = AuCpup_DTIME + }; + + sb = cpg.dentry->d_sb; + inode = d_inode(cpg.dentry); + cpg.bsrc = au_fbtop(file); + err = au_test_ro(sb, cpg.bsrc, inode); + if (!err && (au_hf_top(file)->f_mode & FMODE_WRITE)) { + err = au_pin(pin, cpg.dentry, cpg.bsrc, AuOpt_UDBA_NONE, + /*flags*/0); + goto out; + } + + /* need to cpup or reopen */ + parent = dget_parent(cpg.dentry); + di_write_lock_parent(parent); + err = AuWbrCopyup(au_sbi(sb), cpg.dentry); + cpg.bdst = err; + if (unlikely(err < 0)) + goto out_dgrade; + err = 0; + + if (!d_unhashed(cpg.dentry) && !au_h_dptr(parent, cpg.bdst)) { + err = au_cpup_dirs(cpg.dentry, cpg.bdst); + if (unlikely(err)) + goto out_dgrade; + } + + err = au_pin(pin, cpg.dentry, cpg.bdst, AuOpt_UDBA_NONE, + AuPin_DI_LOCKED | AuPin_MNT_WRITE); + if (unlikely(err)) + goto out_dgrade; + + dbtop = au_dbtop(cpg.dentry); + if (dbtop <= cpg.bdst) + cpg.bsrc = cpg.bdst; + + if (dbtop <= cpg.bdst /* just reopen */ + || !d_unhashed(cpg.dentry) /* copyup and reopen */ + ) { + h_file = au_h_open_pre(cpg.dentry, cpg.bsrc, /*force_wr*/0); + if (IS_ERR(h_file)) + err = PTR_ERR(h_file); + else { + di_downgrade_lock(parent, AuLock_IR); + if (dbtop > cpg.bdst) + err = au_sio_cpup_simple(&cpg); + if (!err) + err = au_reopen_nondir(file); + au_h_open_post(cpg.dentry, cpg.bsrc, h_file); + } + } else { /* copyup as wh and reopen */ + /* + * since writable hfsplus branch is not supported, + * h_open_pre/post() are unnecessary. + */ + err = au_ready_to_write_wh(file, len, cpg.bdst, pin); + di_downgrade_lock(parent, AuLock_IR); + } + + if (!err) { + au_pin_set_parent_lflag(pin, /*lflag*/0); + goto out_dput; /* success */ + } + au_unpin(pin); + goto out_unlock; + +out_dgrade: + di_downgrade_lock(parent, AuLock_IR); +out_unlock: + di_read_unlock(parent, AuLock_IR); +out_dput: + dput(parent); +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +int au_do_flush(struct file *file, fl_owner_t id, + int (*flush)(struct file *file, fl_owner_t id)) +{ + int err; + struct super_block *sb; + struct inode *inode; + + inode = file_inode(file); + sb = inode->i_sb; + si_noflush_read_lock(sb); + fi_read_lock(file); + ii_read_lock_child(inode); + + err = flush(file, id); + au_cpup_attr_timesizes(inode); + + ii_read_unlock(inode); + fi_read_unlock(file); + si_read_unlock(sb); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int au_file_refresh_by_inode(struct file *file, int *need_reopen) +{ + int err; + struct au_pin pin; + struct au_finfo *finfo; + struct dentry *parent, *hi_wh; + struct inode *inode; + struct super_block *sb; + struct au_cp_generic cpg = { + .dentry = file->f_path.dentry, + .bdst = -1, + .bsrc = -1, + .len = -1, + .pin = &pin, + .flags = AuCpup_DTIME + }; + + FiMustWriteLock(file); + + err = 0; + finfo = au_fi(file); + sb = cpg.dentry->d_sb; + inode = d_inode(cpg.dentry); + cpg.bdst = au_ibtop(inode); + if (cpg.bdst == finfo->fi_btop || IS_ROOT(cpg.dentry)) + goto out; + + parent = dget_parent(cpg.dentry); + if (au_test_ro(sb, cpg.bdst, inode)) { + di_read_lock_parent(parent, !AuLock_IR); + err = AuWbrCopyup(au_sbi(sb), cpg.dentry); + cpg.bdst = err; + di_read_unlock(parent, !AuLock_IR); + if (unlikely(err < 0)) + goto out_parent; + err = 0; + } + + di_read_lock_parent(parent, AuLock_IR); + hi_wh = au_hi_wh(inode, cpg.bdst); + if (!S_ISDIR(inode->i_mode) + && au_opt_test(au_mntflags(sb), PLINK) + && au_plink_test(inode) + && !d_unhashed(cpg.dentry) + && cpg.bdst < au_dbtop(cpg.dentry)) { + err = au_test_and_cpup_dirs(cpg.dentry, cpg.bdst); + if (unlikely(err)) + goto out_unlock; + + /* always superio. */ + err = au_pin(&pin, cpg.dentry, cpg.bdst, AuOpt_UDBA_NONE, + AuPin_DI_LOCKED | AuPin_MNT_WRITE); + if (!err) { + err = au_sio_cpup_simple(&cpg); + au_unpin(&pin); + } + } else if (hi_wh) { + /* already copied-up after unlink */ + err = au_reopen_wh(file, cpg.bdst, hi_wh); + *need_reopen = 0; + } + +out_unlock: + di_read_unlock(parent, AuLock_IR); +out_parent: + dput(parent); +out: + return err; +} + +static void au_do_refresh_dir(struct file *file) +{ + aufs_bindex_t bindex, bbot, new_bindex, brid; + struct au_hfile *p, tmp, *q; + struct au_finfo *finfo; + struct super_block *sb; + struct au_fidir *fidir; + + FiMustWriteLock(file); + + sb = file->f_path.dentry->d_sb; + finfo = au_fi(file); + fidir = finfo->fi_hdir; + AuDebugOn(!fidir); + p = fidir->fd_hfile + finfo->fi_btop; + brid = p->hf_br->br_id; + bbot = fidir->fd_bbot; + for (bindex = finfo->fi_btop; bindex <= bbot; bindex++, p++) { + if (!p->hf_file) + continue; + + new_bindex = au_br_index(sb, p->hf_br->br_id); + if (new_bindex == bindex) + continue; + if (new_bindex < 0) { + au_set_h_fptr(file, bindex, NULL); + continue; + } + + /* swap two lower inode, and loop again */ + q = fidir->fd_hfile + new_bindex; + tmp = *q; + *q = *p; + *p = tmp; + if (tmp.hf_file) { + bindex--; + p--; + } + } + + p = fidir->fd_hfile; + if (!au_test_mmapped(file) && !d_unlinked(file->f_path.dentry)) { + bbot = au_sbbot(sb); + for (finfo->fi_btop = 0; finfo->fi_btop <= bbot; + finfo->fi_btop++, p++) + if (p->hf_file) { + if (file_inode(p->hf_file)) + break; + au_hfput(p, /*execed*/0); + } + } else { + bbot = au_br_index(sb, brid); + for (finfo->fi_btop = 0; finfo->fi_btop < bbot; + finfo->fi_btop++, p++) + if (p->hf_file) + au_hfput(p, /*execed*/0); + bbot = au_sbbot(sb); + } + + p = fidir->fd_hfile + bbot; + for (fidir->fd_bbot = bbot; fidir->fd_bbot >= finfo->fi_btop; + fidir->fd_bbot--, p--) + if (p->hf_file) { + if (file_inode(p->hf_file)) + break; + au_hfput(p, /*execed*/0); + } + AuDebugOn(fidir->fd_bbot < finfo->fi_btop); +} + +/* + * after branch manipulating, refresh the file. + */ +static int refresh_file(struct file *file, int (*reopen)(struct file *file)) +{ + int err, need_reopen, nbr; + aufs_bindex_t bbot, bindex; + struct dentry *dentry; + struct super_block *sb; + struct au_finfo *finfo; + struct au_hfile *hfile; + + dentry = file->f_path.dentry; + sb = dentry->d_sb; + nbr = au_sbbot(sb) + 1; + finfo = au_fi(file); + if (!finfo->fi_hdir) { + hfile = &finfo->fi_htop; + AuDebugOn(!hfile->hf_file); + bindex = au_br_index(sb, hfile->hf_br->br_id); + AuDebugOn(bindex < 0); + if (bindex != finfo->fi_btop) + au_set_fbtop(file, bindex); + } else { + err = au_fidir_realloc(finfo, nbr, /*may_shrink*/0); + if (unlikely(err)) + goto out; + au_do_refresh_dir(file); + } + + err = 0; + need_reopen = 1; + if (!au_test_mmapped(file)) + err = au_file_refresh_by_inode(file, &need_reopen); + if (finfo->fi_hdir) + /* harmless if err */ + au_fidir_realloc(finfo, nbr, /*may_shrink*/1); + if (!err && need_reopen && !d_unlinked(dentry)) + err = reopen(file); + if (!err) { + au_update_figen(file); + goto out; /* success */ + } + + /* error, close all lower files */ + if (finfo->fi_hdir) { + bbot = au_fbbot_dir(file); + for (bindex = au_fbtop(file); bindex <= bbot; bindex++) + au_set_h_fptr(file, bindex, NULL); + } + +out: + return err; +} + +/* common function to regular file and dir */ +int au_reval_and_lock_fdi(struct file *file, int (*reopen)(struct file *file), + int wlock, unsigned int fi_lsc) +{ + int err; + unsigned int sigen, figen; + aufs_bindex_t btop; + unsigned char pseudo_link; + struct dentry *dentry; + struct inode *inode; + + err = 0; + dentry = file->f_path.dentry; + inode = d_inode(dentry); + sigen = au_sigen(dentry->d_sb); + fi_write_lock_nested(file, fi_lsc); + figen = au_figen(file); + if (!fi_lsc) + di_write_lock_child(dentry); + else + di_write_lock_child2(dentry); + btop = au_dbtop(dentry); + pseudo_link = (btop != au_ibtop(inode)); + if (sigen == figen && !pseudo_link && au_fbtop(file) == btop) { + if (!wlock) { + di_downgrade_lock(dentry, AuLock_IR); + fi_downgrade_lock(file); + } + goto out; /* success */ + } + + AuDbg("sigen %d, figen %d\n", sigen, figen); + if (au_digen_test(dentry, sigen)) { + err = au_reval_dpath(dentry, sigen); + AuDebugOn(!err && au_digen_test(dentry, sigen)); + } + + if (!err) + err = refresh_file(file, reopen); + if (!err) { + if (!wlock) { + di_downgrade_lock(dentry, AuLock_IR); + fi_downgrade_lock(file); + } + } else { + di_write_unlock(dentry); + fi_write_unlock(file); + } + +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* cf. aufs_nopage() */ +/* for madvise(2) */ +static int aufs_readpage(struct file *file __maybe_unused, struct page *page) +{ + unlock_page(page); + return 0; +} + +/* it will never be called, but necessary to support O_DIRECT */ +static ssize_t aufs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) +{ BUG(); return 0; } + +/* they will never be called. */ +#ifdef CONFIG_AUFS_DEBUG +static int aufs_write_begin(struct file *file, struct address_space *mapping, + loff_t pos, unsigned len, unsigned flags, + struct page **pagep, void **fsdata) +{ AuUnsupport(); return 0; } +static int aufs_write_end(struct file *file, struct address_space *mapping, + loff_t pos, unsigned len, unsigned copied, + struct page *page, void *fsdata) +{ AuUnsupport(); return 0; } +static int aufs_writepage(struct page *page, struct writeback_control *wbc) +{ AuUnsupport(); return 0; } + +static int aufs_set_page_dirty(struct page *page) +{ AuUnsupport(); return 0; } +static void aufs_invalidatepage(struct page *page, unsigned int offset, + unsigned int length) +{ AuUnsupport(); } +static int aufs_releasepage(struct page *page, gfp_t gfp) +{ AuUnsupport(); return 0; } +#if 0 /* called by memory compaction regardless file */ +static int aufs_migratepage(struct address_space *mapping, struct page *newpage, + struct page *page, enum migrate_mode mode) +{ AuUnsupport(); return 0; } +#endif +static bool aufs_isolate_page(struct page *page, isolate_mode_t mode) +{ AuUnsupport(); return true; } +static void aufs_putback_page(struct page *page) +{ AuUnsupport(); } +static int aufs_launder_page(struct page *page) +{ AuUnsupport(); return 0; } +static int aufs_is_partially_uptodate(struct page *page, + unsigned long from, + unsigned long count) +{ AuUnsupport(); return 0; } +static void aufs_is_dirty_writeback(struct page *page, bool *dirty, + bool *writeback) +{ AuUnsupport(); } +static int aufs_error_remove_page(struct address_space *mapping, + struct page *page) +{ AuUnsupport(); return 0; } +static int aufs_swap_activate(struct swap_info_struct *sis, struct file *file, + sector_t *span) +{ AuUnsupport(); return 0; } +static void aufs_swap_deactivate(struct file *file) +{ AuUnsupport(); } +#endif /* CONFIG_AUFS_DEBUG */ + +const struct address_space_operations aufs_aop = { + .readpage = aufs_readpage, + .direct_IO = aufs_direct_IO, +#ifdef CONFIG_AUFS_DEBUG + .writepage = aufs_writepage, + /* no writepages, because of writepage */ + .set_page_dirty = aufs_set_page_dirty, + /* no readpages, because of readpage */ + .write_begin = aufs_write_begin, + .write_end = aufs_write_end, + /* no bmap, no block device */ + .invalidatepage = aufs_invalidatepage, + .releasepage = aufs_releasepage, + /* is fallback_migrate_page ok? */ + /* .migratepage = aufs_migratepage, */ + .isolate_page = aufs_isolate_page, + .putback_page = aufs_putback_page, + .launder_page = aufs_launder_page, + .is_partially_uptodate = aufs_is_partially_uptodate, + .is_dirty_writeback = aufs_is_dirty_writeback, + .error_remove_page = aufs_error_remove_page, + .swap_activate = aufs_swap_activate, + .swap_deactivate = aufs_swap_deactivate +#endif /* CONFIG_AUFS_DEBUG */ +}; diff --git a/include/fs/aufs/file.h b/include/fs/aufs/file.h new file mode 100644 index 00000000000..ed79fa1df28 --- /dev/null +++ b/include/fs/aufs/file.h @@ -0,0 +1,340 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * file operations + */ + +#ifndef __AUFS_FILE_H__ +#define __AUFS_FILE_H__ + +#ifdef __KERNEL__ + +#include +#include +#include +#include +#include "rwsem.h" + +struct au_branch; +struct au_hfile { + struct file *hf_file; + struct au_branch *hf_br; +}; + +struct au_vdir; +struct au_fidir { + aufs_bindex_t fd_bbot; + aufs_bindex_t fd_nent; + struct au_vdir *fd_vdir_cache; + struct au_hfile fd_hfile[]; +}; + +static inline int au_fidir_sz(int nent) +{ + AuDebugOn(nent < 0); + return sizeof(struct au_fidir) + sizeof(struct au_hfile) * nent; +} + +struct au_finfo { + atomic_t fi_generation; + + struct au_rwsem fi_rwsem; + aufs_bindex_t fi_btop; + + /* do not union them */ + struct { /* for non-dir */ + struct au_hfile fi_htop; + atomic_t fi_mmapped; + }; + struct au_fidir *fi_hdir; /* for dir only */ + + struct hlist_bl_node fi_hlist; + struct file *fi_file; /* very ugly */ +} ____cacheline_aligned_in_smp; + +/* ---------------------------------------------------------------------- */ + +/* file.c */ +extern const struct address_space_operations aufs_aop; +unsigned int au_file_roflags(unsigned int flags); +struct file *au_h_open(struct dentry *dentry, aufs_bindex_t bindex, int flags, + struct file *file, int force_wr); +struct au_do_open_args { + int aopen; + int (*open)(struct file *file, int flags, + struct file *h_file); + struct au_fidir *fidir; + struct file *h_file; +}; +int au_do_open(struct file *file, struct au_do_open_args *args); +int au_reopen_nondir(struct file *file); +struct au_pin; +int au_ready_to_write(struct file *file, loff_t len, struct au_pin *pin); +int au_reval_and_lock_fdi(struct file *file, int (*reopen)(struct file *file), + int wlock, unsigned int fi_lsc); +int au_do_flush(struct file *file, fl_owner_t id, + int (*flush)(struct file *file, fl_owner_t id)); + +/* poll.c */ +#ifdef CONFIG_AUFS_POLL +unsigned int aufs_poll(struct file *file, poll_table *wait); +#endif + +#ifdef CONFIG_AUFS_BR_HFSPLUS +/* hfsplus.c */ +struct file *au_h_open_pre(struct dentry *dentry, aufs_bindex_t bindex, + int force_wr); +void au_h_open_post(struct dentry *dentry, aufs_bindex_t bindex, + struct file *h_file); +#else +AuStub(struct file *, au_h_open_pre, return NULL, struct dentry *dentry, + aufs_bindex_t bindex, int force_wr) +AuStubVoid(au_h_open_post, struct dentry *dentry, aufs_bindex_t bindex, + struct file *h_file); +#endif + +/* f_op.c */ +extern const struct file_operations aufs_file_fop; +int au_do_open_nondir(struct file *file, int flags, struct file *h_file); +int aufs_release_nondir(struct inode *inode __maybe_unused, struct file *file); +struct file *au_read_pre(struct file *file, int keep_fi, unsigned int lsc); + +/* finfo.c */ +void au_hfput(struct au_hfile *hf, int execed); +void au_set_h_fptr(struct file *file, aufs_bindex_t bindex, + struct file *h_file); + +void au_update_figen(struct file *file); +struct au_fidir *au_fidir_alloc(struct super_block *sb); +int au_fidir_realloc(struct au_finfo *finfo, int nbr, int may_shrink); + +void au_fi_init_once(void *_fi); +void au_finfo_fin(struct file *file); +int au_finfo_init(struct file *file, struct au_fidir *fidir); + +/* ioctl.c */ +long aufs_ioctl_nondir(struct file *file, unsigned int cmd, unsigned long arg); +#ifdef CONFIG_COMPAT +long aufs_compat_ioctl_dir(struct file *file, unsigned int cmd, + unsigned long arg); +long aufs_compat_ioctl_nondir(struct file *file, unsigned int cmd, + unsigned long arg); +#endif + +/* ---------------------------------------------------------------------- */ + +static inline struct au_finfo *au_fi(struct file *file) +{ + return file->private_data; +} + +/* ---------------------------------------------------------------------- */ + +#define fi_read_lock(f) au_rw_read_lock(&au_fi(f)->fi_rwsem) +#define fi_write_lock(f) au_rw_write_lock(&au_fi(f)->fi_rwsem) +#define fi_read_trylock(f) au_rw_read_trylock(&au_fi(f)->fi_rwsem) +#define fi_write_trylock(f) au_rw_write_trylock(&au_fi(f)->fi_rwsem) +/* +#define fi_read_trylock_nested(f) \ + au_rw_read_trylock_nested(&au_fi(f)->fi_rwsem) +#define fi_write_trylock_nested(f) \ + au_rw_write_trylock_nested(&au_fi(f)->fi_rwsem) +*/ + +#define fi_read_unlock(f) au_rw_read_unlock(&au_fi(f)->fi_rwsem) +#define fi_write_unlock(f) au_rw_write_unlock(&au_fi(f)->fi_rwsem) +#define fi_downgrade_lock(f) au_rw_dgrade_lock(&au_fi(f)->fi_rwsem) + +/* lock subclass for finfo */ +enum { + AuLsc_FI_1, + AuLsc_FI_2 +}; + +static inline void fi_read_lock_nested(struct file *f, unsigned int lsc) +{ + au_rw_read_lock_nested(&au_fi(f)->fi_rwsem, lsc); +} + +static inline void fi_write_lock_nested(struct file *f, unsigned int lsc) +{ + au_rw_write_lock_nested(&au_fi(f)->fi_rwsem, lsc); +} + +/* + * fi_read_lock_1, fi_write_lock_1, + * fi_read_lock_2, fi_write_lock_2 + */ +#define AuReadLockFunc(name) \ +static inline void fi_read_lock_##name(struct file *f) \ +{ fi_read_lock_nested(f, AuLsc_FI_##name); } + +#define AuWriteLockFunc(name) \ +static inline void fi_write_lock_##name(struct file *f) \ +{ fi_write_lock_nested(f, AuLsc_FI_##name); } + +#define AuRWLockFuncs(name) \ + AuReadLockFunc(name) \ + AuWriteLockFunc(name) + +AuRWLockFuncs(1); +AuRWLockFuncs(2); + +#undef AuReadLockFunc +#undef AuWriteLockFunc +#undef AuRWLockFuncs + +#define FiMustNoWaiters(f) AuRwMustNoWaiters(&au_fi(f)->fi_rwsem) +#define FiMustAnyLock(f) AuRwMustAnyLock(&au_fi(f)->fi_rwsem) +#define FiMustWriteLock(f) AuRwMustWriteLock(&au_fi(f)->fi_rwsem) + +/* ---------------------------------------------------------------------- */ + +/* todo: hard/soft set? */ +static inline aufs_bindex_t au_fbtop(struct file *file) +{ + FiMustAnyLock(file); + return au_fi(file)->fi_btop; +} + +static inline aufs_bindex_t au_fbbot_dir(struct file *file) +{ + FiMustAnyLock(file); + AuDebugOn(!au_fi(file)->fi_hdir); + return au_fi(file)->fi_hdir->fd_bbot; +} + +static inline struct au_vdir *au_fvdir_cache(struct file *file) +{ + FiMustAnyLock(file); + AuDebugOn(!au_fi(file)->fi_hdir); + return au_fi(file)->fi_hdir->fd_vdir_cache; +} + +static inline void au_set_fbtop(struct file *file, aufs_bindex_t bindex) +{ + FiMustWriteLock(file); + au_fi(file)->fi_btop = bindex; +} + +static inline void au_set_fbbot_dir(struct file *file, aufs_bindex_t bindex) +{ + FiMustWriteLock(file); + AuDebugOn(!au_fi(file)->fi_hdir); + au_fi(file)->fi_hdir->fd_bbot = bindex; +} + +static inline void au_set_fvdir_cache(struct file *file, + struct au_vdir *vdir_cache) +{ + FiMustWriteLock(file); + AuDebugOn(!au_fi(file)->fi_hdir); + au_fi(file)->fi_hdir->fd_vdir_cache = vdir_cache; +} + +static inline struct file *au_hf_top(struct file *file) +{ + FiMustAnyLock(file); + AuDebugOn(au_fi(file)->fi_hdir); + return au_fi(file)->fi_htop.hf_file; +} + +static inline struct file *au_hf_dir(struct file *file, aufs_bindex_t bindex) +{ + FiMustAnyLock(file); + AuDebugOn(!au_fi(file)->fi_hdir); + return au_fi(file)->fi_hdir->fd_hfile[0 + bindex].hf_file; +} + +/* todo: memory barrier? */ +static inline unsigned int au_figen(struct file *f) +{ + return atomic_read(&au_fi(f)->fi_generation); +} + +static inline void au_set_mmapped(struct file *f) +{ + if (atomic_inc_return(&au_fi(f)->fi_mmapped)) + return; + pr_warn("fi_mmapped wrapped around\n"); + while (!atomic_inc_return(&au_fi(f)->fi_mmapped)) + ; +} + +static inline void au_unset_mmapped(struct file *f) +{ + atomic_dec(&au_fi(f)->fi_mmapped); +} + +static inline int au_test_mmapped(struct file *f) +{ + return atomic_read(&au_fi(f)->fi_mmapped); +} + +/* customize vma->vm_file */ + +static inline void au_do_vm_file_reset(struct vm_area_struct *vma, + struct file *file) +{ + struct file *f; + + f = vma->vm_file; + get_file(file); + vma->vm_file = file; + fput(f); +} + +#ifdef CONFIG_MMU +#define AuDbgVmRegion(file, vma) do {} while (0) + +static inline void au_vm_file_reset(struct vm_area_struct *vma, + struct file *file) +{ + au_do_vm_file_reset(vma, file); +} +#else +#define AuDbgVmRegion(file, vma) \ + AuDebugOn((vma)->vm_region && (vma)->vm_region->vm_file != (file)) + +static inline void au_vm_file_reset(struct vm_area_struct *vma, + struct file *file) +{ + struct file *f; + + au_do_vm_file_reset(vma, file); + f = vma->vm_region->vm_file; + get_file(file); + vma->vm_region->vm_file = file; + fput(f); +} +#endif /* CONFIG_MMU */ + +/* handle vma->vm_prfile */ +static inline void au_vm_prfile_set(struct vm_area_struct *vma, + struct file *file) +{ + get_file(file); + vma->vm_prfile = file; +#ifndef CONFIG_MMU + get_file(file); + vma->vm_region->vm_prfile = file; +#endif +} + +#endif /* __KERNEL__ */ +#endif /* __AUFS_FILE_H__ */ diff --git a/include/fs/aufs/finfo.c b/include/fs/aufs/finfo.c new file mode 100644 index 00000000000..3144f462aa2 --- /dev/null +++ b/include/fs/aufs/finfo.c @@ -0,0 +1,148 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * file private data + */ + +#include "aufs.h" + +void au_hfput(struct au_hfile *hf, int execed) +{ + if (execed) + allow_write_access(hf->hf_file); + fput(hf->hf_file); + hf->hf_file = NULL; + au_br_put(hf->hf_br); + hf->hf_br = NULL; +} + +void au_set_h_fptr(struct file *file, aufs_bindex_t bindex, struct file *val) +{ + struct au_finfo *finfo = au_fi(file); + struct au_hfile *hf; + struct au_fidir *fidir; + + fidir = finfo->fi_hdir; + if (!fidir) { + AuDebugOn(finfo->fi_btop != bindex); + hf = &finfo->fi_htop; + } else + hf = fidir->fd_hfile + bindex; + + if (hf && hf->hf_file) + au_hfput(hf, vfsub_file_execed(file)); + if (val) { + FiMustWriteLock(file); + AuDebugOn(IS_ERR_OR_NULL(file->f_path.dentry)); + hf->hf_file = val; + hf->hf_br = au_sbr(file->f_path.dentry->d_sb, bindex); + } +} + +void au_update_figen(struct file *file) +{ + atomic_set(&au_fi(file)->fi_generation, au_digen(file->f_path.dentry)); + /* smp_mb(); */ /* atomic_set */ +} + +/* ---------------------------------------------------------------------- */ + +struct au_fidir *au_fidir_alloc(struct super_block *sb) +{ + struct au_fidir *fidir; + int nbr; + + nbr = au_sbbot(sb) + 1; + if (nbr < 2) + nbr = 2; /* initial allocate for 2 branches */ + fidir = kzalloc(au_fidir_sz(nbr), GFP_NOFS); + if (fidir) { + fidir->fd_bbot = -1; + fidir->fd_nent = nbr; + } + + return fidir; +} + +int au_fidir_realloc(struct au_finfo *finfo, int nbr, int may_shrink) +{ + int err; + struct au_fidir *fidir, *p; + + AuRwMustWriteLock(&finfo->fi_rwsem); + fidir = finfo->fi_hdir; + AuDebugOn(!fidir); + + err = -ENOMEM; + p = au_kzrealloc(fidir, au_fidir_sz(fidir->fd_nent), au_fidir_sz(nbr), + GFP_NOFS, may_shrink); + if (p) { + p->fd_nent = nbr; + finfo->fi_hdir = p; + err = 0; + } + + return err; +} + +/* ---------------------------------------------------------------------- */ + +void au_finfo_fin(struct file *file) +{ + struct au_finfo *finfo; + + au_nfiles_dec(file->f_path.dentry->d_sb); + + finfo = au_fi(file); + AuDebugOn(finfo->fi_hdir); + AuRwDestroy(&finfo->fi_rwsem); + au_cache_free_finfo(finfo); +} + +void au_fi_init_once(void *_finfo) +{ + struct au_finfo *finfo = _finfo; + + au_rw_init(&finfo->fi_rwsem); +} + +int au_finfo_init(struct file *file, struct au_fidir *fidir) +{ + int err; + struct au_finfo *finfo; + struct dentry *dentry; + + err = -ENOMEM; + dentry = file->f_path.dentry; + finfo = au_cache_alloc_finfo(); + if (unlikely(!finfo)) + goto out; + + err = 0; + au_nfiles_inc(dentry->d_sb); + au_rw_write_lock(&finfo->fi_rwsem); + finfo->fi_btop = -1; + finfo->fi_hdir = fidir; + atomic_set(&finfo->fi_generation, au_digen(dentry)); + /* smp_mb(); */ /* atomic_set */ + + file->private_data = finfo; + +out: + return err; +} diff --git a/include/fs/aufs/fstype.h b/include/fs/aufs/fstype.h new file mode 100644 index 00000000000..7562506dc0e --- /dev/null +++ b/include/fs/aufs/fstype.h @@ -0,0 +1,400 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * judging filesystem type + */ + +#ifndef __AUFS_FSTYPE_H__ +#define __AUFS_FSTYPE_H__ + +#ifdef __KERNEL__ + +#include +#include +#include +#include + +static inline int au_test_aufs(struct super_block *sb) +{ + return sb->s_magic == AUFS_SUPER_MAGIC; +} + +static inline const char *au_sbtype(struct super_block *sb) +{ + return sb->s_type->name; +} + +static inline int au_test_iso9660(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_ISO9660_FS) + return sb->s_magic == ISOFS_SUPER_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_romfs(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_ROMFS_FS) + return sb->s_magic == ROMFS_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_cramfs(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_CRAMFS) + return sb->s_magic == CRAMFS_MAGIC; +#endif + return 0; +} + +static inline int au_test_nfs(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_NFS_FS) + return sb->s_magic == NFS_SUPER_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_fuse(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_FUSE_FS) + return sb->s_magic == FUSE_SUPER_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_xfs(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_XFS_FS) + return sb->s_magic == XFS_SB_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_tmpfs(struct super_block *sb __maybe_unused) +{ +#ifdef CONFIG_TMPFS + return sb->s_magic == TMPFS_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_ecryptfs(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_ECRYPT_FS) + return !strcmp(au_sbtype(sb), "ecryptfs"); +#else + return 0; +#endif +} + +static inline int au_test_ramfs(struct super_block *sb) +{ + return sb->s_magic == RAMFS_MAGIC; +} + +static inline int au_test_ubifs(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_UBIFS_FS) + return sb->s_magic == UBIFS_SUPER_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_procfs(struct super_block *sb __maybe_unused) +{ +#ifdef CONFIG_PROC_FS + return sb->s_magic == PROC_SUPER_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_sysfs(struct super_block *sb __maybe_unused) +{ +#ifdef CONFIG_SYSFS + return sb->s_magic == SYSFS_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_configfs(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_CONFIGFS_FS) + return sb->s_magic == CONFIGFS_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_minix(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_MINIX_FS) + return sb->s_magic == MINIX3_SUPER_MAGIC + || sb->s_magic == MINIX2_SUPER_MAGIC + || sb->s_magic == MINIX2_SUPER_MAGIC2 + || sb->s_magic == MINIX_SUPER_MAGIC + || sb->s_magic == MINIX_SUPER_MAGIC2; +#else + return 0; +#endif +} + +static inline int au_test_fat(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_FAT_FS) + return sb->s_magic == MSDOS_SUPER_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_msdos(struct super_block *sb) +{ + return au_test_fat(sb); +} + +static inline int au_test_vfat(struct super_block *sb) +{ + return au_test_fat(sb); +} + +static inline int au_test_securityfs(struct super_block *sb __maybe_unused) +{ +#ifdef CONFIG_SECURITYFS + return sb->s_magic == SECURITYFS_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_squashfs(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_SQUASHFS) + return sb->s_magic == SQUASHFS_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_btrfs(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_BTRFS_FS) + return sb->s_magic == BTRFS_SUPER_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_xenfs(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_XENFS) + return sb->s_magic == XENFS_SUPER_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_debugfs(struct super_block *sb __maybe_unused) +{ +#ifdef CONFIG_DEBUG_FS + return sb->s_magic == DEBUGFS_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_nilfs(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_NILFS) + return sb->s_magic == NILFS_SUPER_MAGIC; +#else + return 0; +#endif +} + +static inline int au_test_hfsplus(struct super_block *sb __maybe_unused) +{ +#if IS_ENABLED(CONFIG_HFSPLUS_FS) + return sb->s_magic == HFSPLUS_SUPER_MAGIC; +#else + return 0; +#endif +} + +/* ---------------------------------------------------------------------- */ +/* + * they can't be an aufs branch. + */ +static inline int au_test_fs_unsuppoted(struct super_block *sb) +{ + return +#ifndef CONFIG_AUFS_BR_RAMFS + au_test_ramfs(sb) || +#endif + au_test_procfs(sb) + || au_test_sysfs(sb) + || au_test_configfs(sb) + || au_test_debugfs(sb) + || au_test_securityfs(sb) + || au_test_xenfs(sb) + || au_test_ecryptfs(sb) + /* || !strcmp(au_sbtype(sb), "unionfs") */ + || au_test_aufs(sb); /* will be supported in next version */ +} + +static inline int au_test_fs_remote(struct super_block *sb) +{ + return !au_test_tmpfs(sb) +#ifdef CONFIG_AUFS_BR_RAMFS + && !au_test_ramfs(sb) +#endif + && !(sb->s_type->fs_flags & FS_REQUIRES_DEV); +} + +/* ---------------------------------------------------------------------- */ + +/* + * Note: these functions (below) are created after reading ->getattr() in all + * filesystems under linux/fs. it means we have to do so in every update... + */ + +/* + * some filesystems require getattr to refresh the inode attributes before + * referencing. + * in most cases, we can rely on the inode attribute in NFS (or every remote fs) + * and leave the work for d_revalidate() + */ +static inline int au_test_fs_refresh_iattr(struct super_block *sb) +{ + return au_test_nfs(sb) + || au_test_fuse(sb) + /* || au_test_btrfs(sb) */ /* untested */ + ; +} + +/* + * filesystems which don't maintain i_size or i_blocks. + */ +static inline int au_test_fs_bad_iattr_size(struct super_block *sb) +{ + return au_test_xfs(sb) + || au_test_btrfs(sb) + || au_test_ubifs(sb) + || au_test_hfsplus(sb) /* maintained, but incorrect */ + /* || au_test_minix(sb) */ /* untested */ + ; +} + +/* + * filesystems which don't store the correct value in some of their inode + * attributes. + */ +static inline int au_test_fs_bad_iattr(struct super_block *sb) +{ + return au_test_fs_bad_iattr_size(sb) + || au_test_fat(sb) + || au_test_msdos(sb) + || au_test_vfat(sb); +} + +/* they don't check i_nlink in link(2) */ +static inline int au_test_fs_no_limit_nlink(struct super_block *sb) +{ + return au_test_tmpfs(sb) +#ifdef CONFIG_AUFS_BR_RAMFS + || au_test_ramfs(sb) +#endif + || au_test_ubifs(sb) + || au_test_hfsplus(sb); +} + +/* + * filesystems which sets S_NOATIME and S_NOCMTIME. + */ +static inline int au_test_fs_notime(struct super_block *sb) +{ + return au_test_nfs(sb) + || au_test_fuse(sb) + || au_test_ubifs(sb) + ; +} + +/* temporary support for i#1 in cramfs */ +static inline int au_test_fs_unique_ino(struct inode *inode) +{ + if (au_test_cramfs(inode->i_sb)) + return inode->i_ino != 1; + return 1; +} + +/* ---------------------------------------------------------------------- */ + +/* + * the filesystem where the xino files placed must support i/o after unlink and + * maintain i_size and i_blocks. + */ +static inline int au_test_fs_bad_xino(struct super_block *sb) +{ + return au_test_fs_remote(sb) + || au_test_fs_bad_iattr_size(sb) + /* don't want unnecessary work for xino */ + || au_test_aufs(sb) + || au_test_ecryptfs(sb) + || au_test_nilfs(sb); +} + +static inline int au_test_fs_trunc_xino(struct super_block *sb) +{ + return au_test_tmpfs(sb) + || au_test_ramfs(sb); +} + +/* + * test if the @sb is real-readonly. + */ +static inline int au_test_fs_rr(struct super_block *sb) +{ + return au_test_squashfs(sb) + || au_test_iso9660(sb) + || au_test_cramfs(sb) + || au_test_romfs(sb); +} + +/* + * test if the @inode is nfs with 'noacl' option + * NFS always sets SB_POSIXACL regardless its mount option 'noacl.' + */ +static inline int au_test_nfs_noacl(struct inode *inode) +{ + return au_test_nfs(inode->i_sb) + /* && IS_POSIXACL(inode) */ + && !nfs_server_capable(inode, NFS_CAP_ACLS); +} + +#endif /* __KERNEL__ */ +#endif /* __AUFS_FSTYPE_H__ */ diff --git a/include/fs/aufs/hbl.h b/include/fs/aufs/hbl.h new file mode 100644 index 00000000000..328586e37fd --- /dev/null +++ b/include/fs/aufs/hbl.h @@ -0,0 +1,64 @@ +/* + * Copyright (C) 2017-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * helpers for hlist_bl.h + */ + +#ifndef __AUFS_HBL_H__ +#define __AUFS_HBL_H__ + +#ifdef __KERNEL__ + +#include + +static inline void au_hbl_add(struct hlist_bl_node *node, + struct hlist_bl_head *hbl) +{ + hlist_bl_lock(hbl); + hlist_bl_add_head(node, hbl); + hlist_bl_unlock(hbl); +} + +static inline void au_hbl_del(struct hlist_bl_node *node, + struct hlist_bl_head *hbl) +{ + hlist_bl_lock(hbl); + hlist_bl_del(node); + hlist_bl_unlock(hbl); +} + +#define au_hbl_for_each(pos, head) \ + for (pos = hlist_bl_first(head); \ + pos; \ + pos = pos->next) + +static inline unsigned long au_hbl_count(struct hlist_bl_head *hbl) +{ + unsigned long cnt; + struct hlist_bl_node *pos; + + cnt = 0; + hlist_bl_lock(hbl); + au_hbl_for_each(pos, hbl) + cnt++; + hlist_bl_unlock(hbl); + return cnt; +} + +#endif /* __KERNEL__ */ +#endif /* __AUFS_HBL_H__ */ diff --git a/include/fs/aufs/hfsnotify.c b/include/fs/aufs/hfsnotify.c new file mode 100644 index 00000000000..edd7f638529 --- /dev/null +++ b/include/fs/aufs/hfsnotify.c @@ -0,0 +1,289 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * fsnotify for the lower directories + */ + +#include "aufs.h" + +/* FS_IN_IGNORED is unnecessary */ +static const __u32 AuHfsnMask = (FS_MOVED_TO | FS_MOVED_FROM | FS_DELETE + | FS_CREATE | FS_EVENT_ON_CHILD); +static DECLARE_WAIT_QUEUE_HEAD(au_hfsn_wq); +static __cacheline_aligned_in_smp atomic64_t au_hfsn_ifree = ATOMIC64_INIT(0); + +static void au_hfsn_free_mark(struct fsnotify_mark *mark) +{ + struct au_hnotify *hn = container_of(mark, struct au_hnotify, + hn_mark); + /* AuDbg("here\n"); */ + au_cache_free_hnotify(hn); + smp_mb__before_atomic(); /* for atomic64_dec */ + if (atomic64_dec_and_test(&au_hfsn_ifree)) + wake_up(&au_hfsn_wq); +} + +static int au_hfsn_alloc(struct au_hinode *hinode) +{ + int err; + struct au_hnotify *hn; + struct super_block *sb; + struct au_branch *br; + struct fsnotify_mark *mark; + aufs_bindex_t bindex; + + hn = hinode->hi_notify; + sb = hn->hn_aufs_inode->i_sb; + bindex = au_br_index(sb, hinode->hi_id); + br = au_sbr(sb, bindex); + AuDebugOn(!br->br_hfsn); + + mark = &hn->hn_mark; + fsnotify_init_mark(mark, br->br_hfsn->hfsn_group); + mark->mask = AuHfsnMask; + /* + * by udba rename or rmdir, aufs assign a new inode to the known + * h_inode, so specify 1 to allow dups. + */ + lockdep_off(); + err = fsnotify_add_mark(mark, hinode->hi_inode, /*mnt*/NULL, + /*allow_dups*/1); + lockdep_on(); + + return err; +} + +static int au_hfsn_free(struct au_hinode *hinode, struct au_hnotify *hn) +{ + struct fsnotify_mark *mark; + unsigned long long ull; + struct fsnotify_group *group; + + ull = atomic64_inc_return(&au_hfsn_ifree); + BUG_ON(!ull); + + mark = &hn->hn_mark; + spin_lock(&mark->lock); + group = mark->group; + fsnotify_get_group(group); + spin_unlock(&mark->lock); + lockdep_off(); + fsnotify_destroy_mark(mark, group); + fsnotify_put_mark(mark); + fsnotify_put_group(group); + lockdep_on(); + + /* free hn by myself */ + return 0; +} + +/* ---------------------------------------------------------------------- */ + +static void au_hfsn_ctl(struct au_hinode *hinode, int do_set) +{ + struct fsnotify_mark *mark; + + mark = &hinode->hi_notify->hn_mark; + spin_lock(&mark->lock); + if (do_set) { + AuDebugOn(mark->mask & AuHfsnMask); + mark->mask |= AuHfsnMask; + } else { + AuDebugOn(!(mark->mask & AuHfsnMask)); + mark->mask &= ~AuHfsnMask; + } + spin_unlock(&mark->lock); + /* fsnotify_recalc_inode_mask(hinode->hi_inode); */ +} + +/* ---------------------------------------------------------------------- */ + +/* #define AuDbgHnotify */ +#ifdef AuDbgHnotify +static char *au_hfsn_name(u32 mask) +{ +#ifdef CONFIG_AUFS_DEBUG +#define test_ret(flag) \ + do { \ + if (mask & flag) \ + return #flag; \ + } while (0) + test_ret(FS_ACCESS); + test_ret(FS_MODIFY); + test_ret(FS_ATTRIB); + test_ret(FS_CLOSE_WRITE); + test_ret(FS_CLOSE_NOWRITE); + test_ret(FS_OPEN); + test_ret(FS_MOVED_FROM); + test_ret(FS_MOVED_TO); + test_ret(FS_CREATE); + test_ret(FS_DELETE); + test_ret(FS_DELETE_SELF); + test_ret(FS_MOVE_SELF); + test_ret(FS_UNMOUNT); + test_ret(FS_Q_OVERFLOW); + test_ret(FS_IN_IGNORED); + test_ret(FS_ISDIR); + test_ret(FS_IN_ONESHOT); + test_ret(FS_EVENT_ON_CHILD); + return ""; +#undef test_ret +#else + return "??"; +#endif +} +#endif + +/* ---------------------------------------------------------------------- */ + +static void au_hfsn_free_group(struct fsnotify_group *group) +{ + struct au_br_hfsnotify *hfsn = group->private; + + /* AuDbg("here\n"); */ + kfree(hfsn); +} + +static int au_hfsn_handle_event(struct fsnotify_group *group, + struct inode *inode, + struct fsnotify_mark *inode_mark, + struct fsnotify_mark *vfsmount_mark, + u32 mask, const void *data, int data_type, + const unsigned char *file_name, u32 cookie, + struct fsnotify_iter_info *iter_info) +{ + int err; + struct au_hnotify *hnotify; + struct inode *h_dir, *h_inode; + struct qstr h_child_qstr = QSTR_INIT(file_name, strlen(file_name)); + + AuDebugOn(data_type != FSNOTIFY_EVENT_INODE); + + err = 0; + /* if FS_UNMOUNT happens, there must be another bug */ + AuDebugOn(mask & FS_UNMOUNT); + if (mask & (FS_IN_IGNORED | FS_UNMOUNT)) + goto out; + + h_dir = inode; + h_inode = NULL; +#ifdef AuDbgHnotify + au_debug_on(); + if (1 || h_child_qstr.len != sizeof(AUFS_XINO_FNAME) - 1 + || strncmp(h_child_qstr.name, AUFS_XINO_FNAME, h_child_qstr.len)) { + AuDbg("i%lu, mask 0x%x %s, hcname %.*s, hi%lu\n", + h_dir->i_ino, mask, au_hfsn_name(mask), + AuLNPair(&h_child_qstr), h_inode ? h_inode->i_ino : 0); + /* WARN_ON(1); */ + } + au_debug_off(); +#endif + + AuDebugOn(!inode_mark); + hnotify = container_of(inode_mark, struct au_hnotify, hn_mark); + err = au_hnotify(h_dir, hnotify, mask, &h_child_qstr, h_inode); + +out: + return err; +} + +static struct fsnotify_ops au_hfsn_ops = { + .handle_event = au_hfsn_handle_event, + .free_group_priv = au_hfsn_free_group, + .free_mark = au_hfsn_free_mark +}; + +/* ---------------------------------------------------------------------- */ + +static void au_hfsn_fin_br(struct au_branch *br) +{ + struct au_br_hfsnotify *hfsn; + + hfsn = br->br_hfsn; + if (hfsn) { + lockdep_off(); + fsnotify_put_group(hfsn->hfsn_group); + lockdep_on(); + } +} + +static int au_hfsn_init_br(struct au_branch *br, int perm) +{ + int err; + struct fsnotify_group *group; + struct au_br_hfsnotify *hfsn; + + err = 0; + br->br_hfsn = NULL; + if (!au_br_hnotifyable(perm)) + goto out; + + err = -ENOMEM; + hfsn = kmalloc(sizeof(*hfsn), GFP_NOFS); + if (unlikely(!hfsn)) + goto out; + + err = 0; + group = fsnotify_alloc_group(&au_hfsn_ops); + if (IS_ERR(group)) { + err = PTR_ERR(group); + pr_err("fsnotify_alloc_group() failed, %d\n", err); + goto out_hfsn; + } + + group->private = hfsn; + hfsn->hfsn_group = group; + br->br_hfsn = hfsn; + goto out; /* success */ + +out_hfsn: + kfree(hfsn); +out: + return err; +} + +static int au_hfsn_reset_br(unsigned int udba, struct au_branch *br, int perm) +{ + int err; + + err = 0; + if (!br->br_hfsn) + err = au_hfsn_init_br(br, perm); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +static void au_hfsn_fin(void) +{ + AuDbg("au_hfsn_ifree %lld\n", (long long)atomic64_read(&au_hfsn_ifree)); + wait_event(au_hfsn_wq, !atomic64_read(&au_hfsn_ifree)); +} + +const struct au_hnotify_op au_hnotify_op = { + .ctl = au_hfsn_ctl, + .alloc = au_hfsn_alloc, + .free = au_hfsn_free, + + .fin = au_hfsn_fin, + + .reset_br = au_hfsn_reset_br, + .fin_br = au_hfsn_fin_br, + .init_br = au_hfsn_init_br +}; diff --git a/include/fs/aufs/hfsplus.c b/include/fs/aufs/hfsplus.c new file mode 100644 index 00000000000..f4ed5167856 --- /dev/null +++ b/include/fs/aufs/hfsplus.c @@ -0,0 +1,56 @@ +/* + * Copyright (C) 2010-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * special support for filesystems which aqucires an inode mutex + * at final closing a file, eg, hfsplus. + * + * This trick is very simple and stupid, just to open the file before really + * neceeary open to tell hfsplus that this is not the final closing. + * The caller should call au_h_open_pre() after acquiring the inode mutex, + * and au_h_open_post() after releasing it. + */ + +#include "aufs.h" + +struct file *au_h_open_pre(struct dentry *dentry, aufs_bindex_t bindex, + int force_wr) +{ + struct file *h_file; + struct dentry *h_dentry; + + h_dentry = au_h_dptr(dentry, bindex); + AuDebugOn(!h_dentry); + AuDebugOn(d_is_negative(h_dentry)); + + h_file = NULL; + if (au_test_hfsplus(h_dentry->d_sb) + && d_is_reg(h_dentry)) + h_file = au_h_open(dentry, bindex, + O_RDONLY | O_NOATIME | O_LARGEFILE, + /*file*/NULL, force_wr); + return h_file; +} + +void au_h_open_post(struct dentry *dentry, aufs_bindex_t bindex, + struct file *h_file) +{ + if (h_file) { + fput(h_file); + au_sbr_put(dentry->d_sb, bindex); + } +} diff --git a/include/fs/aufs/hnotify.c b/include/fs/aufs/hnotify.c new file mode 100644 index 00000000000..7dd64918b58 --- /dev/null +++ b/include/fs/aufs/hnotify.c @@ -0,0 +1,719 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * abstraction to notify the direct changes on lower directories + */ + +#include "aufs.h" + +int au_hn_alloc(struct au_hinode *hinode, struct inode *inode) +{ + int err; + struct au_hnotify *hn; + + err = -ENOMEM; + hn = au_cache_alloc_hnotify(); + if (hn) { + hn->hn_aufs_inode = inode; + hinode->hi_notify = hn; + err = au_hnotify_op.alloc(hinode); + AuTraceErr(err); + if (unlikely(err)) { + hinode->hi_notify = NULL; + au_cache_free_hnotify(hn); + /* + * The upper dir was removed by udba, but the same named + * dir left. In this case, aufs assignes a new inode + * number and set the monitor again. + * For the lower dir, the old monitnor is still left. + */ + if (err == -EEXIST) + err = 0; + } + } + + AuTraceErr(err); + return err; +} + +void au_hn_free(struct au_hinode *hinode) +{ + struct au_hnotify *hn; + + hn = hinode->hi_notify; + if (hn) { + hinode->hi_notify = NULL; + if (au_hnotify_op.free(hinode, hn)) + au_cache_free_hnotify(hn); + } +} + +/* ---------------------------------------------------------------------- */ + +void au_hn_ctl(struct au_hinode *hinode, int do_set) +{ + if (hinode->hi_notify) + au_hnotify_op.ctl(hinode, do_set); +} + +void au_hn_reset(struct inode *inode, unsigned int flags) +{ + aufs_bindex_t bindex, bbot; + struct inode *hi; + struct dentry *iwhdentry; + + bbot = au_ibbot(inode); + for (bindex = au_ibtop(inode); bindex <= bbot; bindex++) { + hi = au_h_iptr(inode, bindex); + if (!hi) + continue; + + /* inode_lock_nested(hi, AuLsc_I_CHILD); */ + iwhdentry = au_hi_wh(inode, bindex); + if (iwhdentry) + dget(iwhdentry); + au_igrab(hi); + au_set_h_iptr(inode, bindex, NULL, 0); + au_set_h_iptr(inode, bindex, au_igrab(hi), + flags & ~AuHi_XINO); + iput(hi); + dput(iwhdentry); + /* inode_unlock(hi); */ + } +} + +/* ---------------------------------------------------------------------- */ + +static int hn_xino(struct inode *inode, struct inode *h_inode) +{ + int err; + aufs_bindex_t bindex, bbot, bfound, btop; + struct inode *h_i; + + err = 0; + if (unlikely(inode->i_ino == AUFS_ROOT_INO)) { + pr_warn("branch root dir was changed\n"); + goto out; + } + + bfound = -1; + bbot = au_ibbot(inode); + btop = au_ibtop(inode); +#if 0 /* reserved for future use */ + if (bindex == bbot) { + /* keep this ino in rename case */ + goto out; + } +#endif + for (bindex = btop; bindex <= bbot; bindex++) + if (au_h_iptr(inode, bindex) == h_inode) { + bfound = bindex; + break; + } + if (bfound < 0) + goto out; + + for (bindex = btop; bindex <= bbot; bindex++) { + h_i = au_h_iptr(inode, bindex); + if (!h_i) + continue; + + err = au_xino_write(inode->i_sb, bindex, h_i->i_ino, /*ino*/0); + /* ignore this error */ + /* bad action? */ + } + + /* children inode number will be broken */ + +out: + AuTraceErr(err); + return err; +} + +static int hn_gen_tree(struct dentry *dentry) +{ + int err, i, j, ndentry; + struct au_dcsub_pages dpages; + struct au_dpage *dpage; + struct dentry **dentries; + + err = au_dpages_init(&dpages, GFP_NOFS); + if (unlikely(err)) + goto out; + err = au_dcsub_pages(&dpages, dentry, NULL, NULL); + if (unlikely(err)) + goto out_dpages; + + for (i = 0; i < dpages.ndpage; i++) { + dpage = dpages.dpages + i; + dentries = dpage->dentries; + ndentry = dpage->ndentry; + for (j = 0; j < ndentry; j++) { + struct dentry *d; + + d = dentries[j]; + if (IS_ROOT(d)) + continue; + + au_digen_dec(d); + if (d_really_is_positive(d)) + /* todo: reset children xino? + cached children only? */ + au_iigen_dec(d_inode(d)); + } + } + +out_dpages: + au_dpages_free(&dpages); + +#if 0 + /* discard children */ + dentry_unhash(dentry); + dput(dentry); +#endif +out: + return err; +} + +/* + * return 0 if processed. + */ +static int hn_gen_by_inode(char *name, unsigned int nlen, struct inode *inode, + const unsigned int isdir) +{ + int err; + struct dentry *d; + struct qstr *dname; + + err = 1; + if (unlikely(inode->i_ino == AUFS_ROOT_INO)) { + pr_warn("branch root dir was changed\n"); + err = 0; + goto out; + } + + if (!isdir) { + AuDebugOn(!name); + au_iigen_dec(inode); + spin_lock(&inode->i_lock); + hlist_for_each_entry(d, &inode->i_dentry, d_u.d_alias) { + spin_lock(&d->d_lock); + dname = &d->d_name; + if (dname->len != nlen + && memcmp(dname->name, name, nlen)) { + spin_unlock(&d->d_lock); + continue; + } + err = 0; + au_digen_dec(d); + spin_unlock(&d->d_lock); + break; + } + spin_unlock(&inode->i_lock); + } else { + au_fset_si(au_sbi(inode->i_sb), FAILED_REFRESH_DIR); + d = d_find_any_alias(inode); + if (!d) { + au_iigen_dec(inode); + goto out; + } + + spin_lock(&d->d_lock); + dname = &d->d_name; + if (dname->len == nlen && !memcmp(dname->name, name, nlen)) { + spin_unlock(&d->d_lock); + err = hn_gen_tree(d); + spin_lock(&d->d_lock); + } + spin_unlock(&d->d_lock); + dput(d); + } + +out: + AuTraceErr(err); + return err; +} + +static int hn_gen_by_name(struct dentry *dentry, const unsigned int isdir) +{ + int err; + + if (IS_ROOT(dentry)) { + pr_warn("branch root dir was changed\n"); + return 0; + } + + err = 0; + if (!isdir) { + au_digen_dec(dentry); + if (d_really_is_positive(dentry)) + au_iigen_dec(d_inode(dentry)); + } else { + au_fset_si(au_sbi(dentry->d_sb), FAILED_REFRESH_DIR); + if (d_really_is_positive(dentry)) + err = hn_gen_tree(dentry); + } + + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* hnotify job flags */ +#define AuHnJob_XINO0 1 +#define AuHnJob_GEN (1 << 1) +#define AuHnJob_DIRENT (1 << 2) +#define AuHnJob_ISDIR (1 << 3) +#define AuHnJob_TRYXINO0 (1 << 4) +#define AuHnJob_MNTPNT (1 << 5) +#define au_ftest_hnjob(flags, name) ((flags) & AuHnJob_##name) +#define au_fset_hnjob(flags, name) \ + do { (flags) |= AuHnJob_##name; } while (0) +#define au_fclr_hnjob(flags, name) \ + do { (flags) &= ~AuHnJob_##name; } while (0) + +enum { + AuHn_CHILD, + AuHn_PARENT, + AuHnLast +}; + +struct au_hnotify_args { + struct inode *h_dir, *dir, *h_child_inode; + u32 mask; + unsigned int flags[AuHnLast]; + unsigned int h_child_nlen; + char h_child_name[]; +}; + +struct hn_job_args { + unsigned int flags; + struct inode *inode, *h_inode, *dir, *h_dir; + struct dentry *dentry; + char *h_name; + int h_nlen; +}; + +static int hn_job(struct hn_job_args *a) +{ + const unsigned int isdir = au_ftest_hnjob(a->flags, ISDIR); + int e; + + /* reset xino */ + if (au_ftest_hnjob(a->flags, XINO0) && a->inode) + hn_xino(a->inode, a->h_inode); /* ignore this error */ + + if (au_ftest_hnjob(a->flags, TRYXINO0) + && a->inode + && a->h_inode) { + vfsub_inode_lock_shared_nested(a->h_inode, AuLsc_I_CHILD); + if (!a->h_inode->i_nlink + && !(a->h_inode->i_state & I_LINKABLE)) + hn_xino(a->inode, a->h_inode); /* ignore this error */ + inode_unlock_shared(a->h_inode); + } + + /* make the generation obsolete */ + if (au_ftest_hnjob(a->flags, GEN)) { + e = -1; + if (a->inode) + e = hn_gen_by_inode(a->h_name, a->h_nlen, a->inode, + isdir); + if (e && a->dentry) + hn_gen_by_name(a->dentry, isdir); + /* ignore this error */ + } + + /* make dir entries obsolete */ + if (au_ftest_hnjob(a->flags, DIRENT) && a->inode) { + struct au_vdir *vdir; + + vdir = au_ivdir(a->inode); + if (vdir) + vdir->vd_jiffy = 0; + /* IMustLock(a->inode); */ + /* a->inode->i_version++; */ + } + + /* can do nothing but warn */ + if (au_ftest_hnjob(a->flags, MNTPNT) + && a->dentry + && d_mountpoint(a->dentry)) + pr_warn("mount-point %pd is removed or renamed\n", a->dentry); + + return 0; +} + +/* ---------------------------------------------------------------------- */ + +static struct dentry *lookup_wlock_by_name(char *name, unsigned int nlen, + struct inode *dir) +{ + struct dentry *dentry, *d, *parent; + struct qstr *dname; + + parent = d_find_any_alias(dir); + if (!parent) + return NULL; + + dentry = NULL; + spin_lock(&parent->d_lock); + list_for_each_entry(d, &parent->d_subdirs, d_child) { + /* AuDbg("%pd\n", d); */ + spin_lock_nested(&d->d_lock, DENTRY_D_LOCK_NESTED); + dname = &d->d_name; + if (dname->len != nlen || memcmp(dname->name, name, nlen)) + goto cont_unlock; + if (au_di(d)) + au_digen_dec(d); + else + goto cont_unlock; + if (au_dcount(d) > 0) { + dentry = dget_dlock(d); + spin_unlock(&d->d_lock); + break; + } + +cont_unlock: + spin_unlock(&d->d_lock); + } + spin_unlock(&parent->d_lock); + dput(parent); + + if (dentry) + di_write_lock_child(dentry); + + return dentry; +} + +static struct inode *lookup_wlock_by_ino(struct super_block *sb, + aufs_bindex_t bindex, ino_t h_ino) +{ + struct inode *inode; + ino_t ino; + int err; + + inode = NULL; + err = au_xino_read(sb, bindex, h_ino, &ino); + if (!err && ino) + inode = ilookup(sb, ino); + if (!inode) + goto out; + + if (unlikely(inode->i_ino == AUFS_ROOT_INO)) { + pr_warn("wrong root branch\n"); + iput(inode); + inode = NULL; + goto out; + } + + ii_write_lock_child(inode); + +out: + return inode; +} + +static void au_hn_bh(void *_args) +{ + struct au_hnotify_args *a = _args; + struct super_block *sb; + aufs_bindex_t bindex, bbot, bfound; + unsigned char xino, try_iput; + int err; + struct inode *inode; + ino_t h_ino; + struct hn_job_args args; + struct dentry *dentry; + struct au_sbinfo *sbinfo; + + AuDebugOn(!_args); + AuDebugOn(!a->h_dir); + AuDebugOn(!a->dir); + AuDebugOn(!a->mask); + AuDbg("mask 0x%x, i%lu, hi%lu, hci%lu\n", + a->mask, a->dir->i_ino, a->h_dir->i_ino, + a->h_child_inode ? a->h_child_inode->i_ino : 0); + + inode = NULL; + dentry = NULL; + /* + * do not lock a->dir->i_mutex here + * because of d_revalidate() may cause a deadlock. + */ + sb = a->dir->i_sb; + AuDebugOn(!sb); + sbinfo = au_sbi(sb); + AuDebugOn(!sbinfo); + si_write_lock(sb, AuLock_NOPLMW); + + if (au_opt_test(sbinfo->si_mntflags, DIRREN)) + switch (a->mask & FS_EVENTS_POSS_ON_CHILD) { + case FS_MOVED_FROM: + case FS_MOVED_TO: + AuWarn1("DIRREN with UDBA may not work correctly " + "for the direct rename(2)\n"); + } + + ii_read_lock_parent(a->dir); + bfound = -1; + bbot = au_ibbot(a->dir); + for (bindex = au_ibtop(a->dir); bindex <= bbot; bindex++) + if (au_h_iptr(a->dir, bindex) == a->h_dir) { + bfound = bindex; + break; + } + ii_read_unlock(a->dir); + if (unlikely(bfound < 0)) + goto out; + + xino = !!au_opt_test(au_mntflags(sb), XINO); + h_ino = 0; + if (a->h_child_inode) + h_ino = a->h_child_inode->i_ino; + + if (a->h_child_nlen + && (au_ftest_hnjob(a->flags[AuHn_CHILD], GEN) + || au_ftest_hnjob(a->flags[AuHn_CHILD], MNTPNT))) + dentry = lookup_wlock_by_name(a->h_child_name, a->h_child_nlen, + a->dir); + try_iput = 0; + if (dentry && d_really_is_positive(dentry)) + inode = d_inode(dentry); + if (xino && !inode && h_ino + && (au_ftest_hnjob(a->flags[AuHn_CHILD], XINO0) + || au_ftest_hnjob(a->flags[AuHn_CHILD], TRYXINO0) + || au_ftest_hnjob(a->flags[AuHn_CHILD], GEN))) { + inode = lookup_wlock_by_ino(sb, bfound, h_ino); + try_iput = 1; + } + + args.flags = a->flags[AuHn_CHILD]; + args.dentry = dentry; + args.inode = inode; + args.h_inode = a->h_child_inode; + args.dir = a->dir; + args.h_dir = a->h_dir; + args.h_name = a->h_child_name; + args.h_nlen = a->h_child_nlen; + err = hn_job(&args); + if (dentry) { + if (au_di(dentry)) + di_write_unlock(dentry); + dput(dentry); + } + if (inode && try_iput) { + ii_write_unlock(inode); + iput(inode); + } + + ii_write_lock_parent(a->dir); + args.flags = a->flags[AuHn_PARENT]; + args.dentry = NULL; + args.inode = a->dir; + args.h_inode = a->h_dir; + args.dir = NULL; + args.h_dir = NULL; + args.h_name = NULL; + args.h_nlen = 0; + err = hn_job(&args); + ii_write_unlock(a->dir); + +out: + iput(a->h_child_inode); + iput(a->h_dir); + iput(a->dir); + si_write_unlock(sb); + au_nwt_done(&sbinfo->si_nowait); + kfree(a); +} + +/* ---------------------------------------------------------------------- */ + +int au_hnotify(struct inode *h_dir, struct au_hnotify *hnotify, u32 mask, + struct qstr *h_child_qstr, struct inode *h_child_inode) +{ + int err, len; + unsigned int flags[AuHnLast], f; + unsigned char isdir, isroot, wh; + struct inode *dir; + struct au_hnotify_args *args; + char *p, *h_child_name; + + err = 0; + AuDebugOn(!hnotify || !hnotify->hn_aufs_inode); + dir = igrab(hnotify->hn_aufs_inode); + if (!dir) + goto out; + + isroot = (dir->i_ino == AUFS_ROOT_INO); + wh = 0; + h_child_name = (void *)h_child_qstr->name; + len = h_child_qstr->len; + if (h_child_name) { + if (len > AUFS_WH_PFX_LEN + && !memcmp(h_child_name, AUFS_WH_PFX, AUFS_WH_PFX_LEN)) { + h_child_name += AUFS_WH_PFX_LEN; + len -= AUFS_WH_PFX_LEN; + wh = 1; + } + } + + isdir = 0; + if (h_child_inode) + isdir = !!S_ISDIR(h_child_inode->i_mode); + flags[AuHn_PARENT] = AuHnJob_ISDIR; + flags[AuHn_CHILD] = 0; + if (isdir) + flags[AuHn_CHILD] = AuHnJob_ISDIR; + au_fset_hnjob(flags[AuHn_PARENT], DIRENT); + au_fset_hnjob(flags[AuHn_CHILD], GEN); + switch (mask & FS_EVENTS_POSS_ON_CHILD) { + case FS_MOVED_FROM: + case FS_MOVED_TO: + au_fset_hnjob(flags[AuHn_CHILD], XINO0); + au_fset_hnjob(flags[AuHn_CHILD], MNTPNT); + /*FALLTHROUGH*/ + case FS_CREATE: + AuDebugOn(!h_child_name); + break; + + case FS_DELETE: + /* + * aufs never be able to get this child inode. + * revalidation should be in d_revalidate() + * by checking i_nlink, i_generation or d_unhashed(). + */ + AuDebugOn(!h_child_name); + au_fset_hnjob(flags[AuHn_CHILD], TRYXINO0); + au_fset_hnjob(flags[AuHn_CHILD], MNTPNT); + break; + + default: + AuDebugOn(1); + } + + if (wh) + h_child_inode = NULL; + + err = -ENOMEM; + /* iput() and kfree() will be called in au_hnotify() */ + args = kmalloc(sizeof(*args) + len + 1, GFP_NOFS); + if (unlikely(!args)) { + AuErr1("no memory\n"); + iput(dir); + goto out; + } + args->flags[AuHn_PARENT] = flags[AuHn_PARENT]; + args->flags[AuHn_CHILD] = flags[AuHn_CHILD]; + args->mask = mask; + args->dir = dir; + args->h_dir = igrab(h_dir); + if (h_child_inode) + h_child_inode = igrab(h_child_inode); /* can be NULL */ + args->h_child_inode = h_child_inode; + args->h_child_nlen = len; + if (len) { + p = (void *)args; + p += sizeof(*args); + memcpy(p, h_child_name, len); + p[len] = 0; + } + + /* NFS fires the event for silly-renamed one from kworker */ + f = 0; + if (!dir->i_nlink + || (au_test_nfs(h_dir->i_sb) && (mask & FS_DELETE))) + f = AuWkq_NEST; + err = au_wkq_nowait(au_hn_bh, args, dir->i_sb, f); + if (unlikely(err)) { + pr_err("wkq %d\n", err); + iput(args->h_child_inode); + iput(args->h_dir); + iput(args->dir); + kfree(args); + } + +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +int au_hnotify_reset_br(unsigned int udba, struct au_branch *br, int perm) +{ + int err; + + AuDebugOn(!(udba & AuOptMask_UDBA)); + + err = 0; + if (au_hnotify_op.reset_br) + err = au_hnotify_op.reset_br(udba, br, perm); + + return err; +} + +int au_hnotify_init_br(struct au_branch *br, int perm) +{ + int err; + + err = 0; + if (au_hnotify_op.init_br) + err = au_hnotify_op.init_br(br, perm); + + return err; +} + +void au_hnotify_fin_br(struct au_branch *br) +{ + if (au_hnotify_op.fin_br) + au_hnotify_op.fin_br(br); +} + +static void au_hn_destroy_cache(void) +{ + kmem_cache_destroy(au_cache[AuCache_HNOTIFY]); + au_cache[AuCache_HNOTIFY] = NULL; +} + +int __init au_hnotify_init(void) +{ + int err; + + err = -ENOMEM; + au_cache[AuCache_HNOTIFY] = AuCache(au_hnotify); + if (au_cache[AuCache_HNOTIFY]) { + err = 0; + if (au_hnotify_op.init) + err = au_hnotify_op.init(); + if (unlikely(err)) + au_hn_destroy_cache(); + } + AuTraceErr(err); + return err; +} + +void au_hnotify_fin(void) +{ + if (au_hnotify_op.fin) + au_hnotify_op.fin(); + + /* cf. au_cache_fin() */ + if (au_cache[AuCache_HNOTIFY]) + au_hn_destroy_cache(); +} diff --git a/include/fs/aufs/i_op.c b/include/fs/aufs/i_op.c new file mode 100644 index 00000000000..80bd9bebaf3 --- /dev/null +++ b/include/fs/aufs/i_op.c @@ -0,0 +1,1459 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * inode operations (except add/del/rename) + */ + +#include +#include +#include +#include +#include "aufs.h" + +static int h_permission(struct inode *h_inode, int mask, + struct path *h_path, int brperm) +{ + int err; + const unsigned char write_mask = !!(mask & (MAY_WRITE | MAY_APPEND)); + + err = -EPERM; + if (write_mask && IS_IMMUTABLE(h_inode)) + goto out; + + err = -EACCES; + if (((mask & MAY_EXEC) + && S_ISREG(h_inode->i_mode) + && (path_noexec(h_path) + || !(h_inode->i_mode & S_IXUGO)))) + goto out; + + /* + * - skip the lower fs test in the case of write to ro branch. + * - nfs dir permission write check is optimized, but a policy for + * link/rename requires a real check. + * - nfs always sets SB_POSIXACL regardless its mount option 'noacl.' + * in this case, generic_permission() returns -EOPNOTSUPP. + */ + if ((write_mask && !au_br_writable(brperm)) + || (au_test_nfs(h_inode->i_sb) && S_ISDIR(h_inode->i_mode) + && write_mask && !(mask & MAY_READ)) + || !h_inode->i_op->permission) { + /* AuLabel(generic_permission); */ + /* AuDbg("get_acl %pf\n", h_inode->i_op->get_acl); */ + err = generic_permission(h_inode, mask); + if (err == -EOPNOTSUPP && au_test_nfs_noacl(h_inode)) + err = h_inode->i_op->permission(h_inode, mask); + AuTraceErr(err); + } else { + /* AuLabel(h_inode->permission); */ + err = h_inode->i_op->permission(h_inode, mask); + AuTraceErr(err); + } + + if (!err) + err = devcgroup_inode_permission(h_inode, mask); + if (!err) + err = security_inode_permission(h_inode, mask); + +#if 0 + if (!err) { + /* todo: do we need to call ima_path_check()? */ + struct path h_path = { + .dentry = + .mnt = h_mnt + }; + err = ima_path_check(&h_path, + mask & (MAY_READ | MAY_WRITE | MAY_EXEC), + IMA_COUNT_LEAVE); + } +#endif + +out: + return err; +} + +static int aufs_permission(struct inode *inode, int mask) +{ + int err; + aufs_bindex_t bindex, bbot; + const unsigned char isdir = !!S_ISDIR(inode->i_mode), + write_mask = !!(mask & (MAY_WRITE | MAY_APPEND)); + struct inode *h_inode; + struct super_block *sb; + struct au_branch *br; + + /* todo: support rcu-walk? */ + if (mask & MAY_NOT_BLOCK) + return -ECHILD; + + sb = inode->i_sb; + si_read_lock(sb, AuLock_FLUSH); + ii_read_lock_child(inode); +#if 0 + err = au_iigen_test(inode, au_sigen(sb)); + if (unlikely(err)) + goto out; +#endif + + if (!isdir + || write_mask + || au_opt_test(au_mntflags(sb), DIRPERM1)) { + err = au_busy_or_stale(); + h_inode = au_h_iptr(inode, au_ibtop(inode)); + if (unlikely(!h_inode + || (h_inode->i_mode & S_IFMT) + != (inode->i_mode & S_IFMT))) + goto out; + + err = 0; + bindex = au_ibtop(inode); + br = au_sbr(sb, bindex); + err = h_permission(h_inode, mask, &br->br_path, br->br_perm); + if (write_mask + && !err + && !special_file(h_inode->i_mode)) { + /* test whether the upper writable branch exists */ + err = -EROFS; + for (; bindex >= 0; bindex--) + if (!au_br_rdonly(au_sbr(sb, bindex))) { + err = 0; + break; + } + } + goto out; + } + + /* non-write to dir */ + err = 0; + bbot = au_ibbot(inode); + for (bindex = au_ibtop(inode); !err && bindex <= bbot; bindex++) { + h_inode = au_h_iptr(inode, bindex); + if (h_inode) { + err = au_busy_or_stale(); + if (unlikely(!S_ISDIR(h_inode->i_mode))) + break; + + br = au_sbr(sb, bindex); + err = h_permission(h_inode, mask, &br->br_path, + br->br_perm); + } + } + +out: + ii_read_unlock(inode); + si_read_unlock(sb); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static struct dentry *aufs_lookup(struct inode *dir, struct dentry *dentry, + unsigned int flags) +{ + struct dentry *ret, *parent; + struct inode *inode; + struct super_block *sb; + int err, npositive; + + IMustLock(dir); + + /* todo: support rcu-walk? */ + ret = ERR_PTR(-ECHILD); + if (flags & LOOKUP_RCU) + goto out; + + ret = ERR_PTR(-ENAMETOOLONG); + if (unlikely(dentry->d_name.len > AUFS_MAX_NAMELEN)) + goto out; + + sb = dir->i_sb; + err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM); + ret = ERR_PTR(err); + if (unlikely(err)) + goto out; + + err = au_di_init(dentry); + ret = ERR_PTR(err); + if (unlikely(err)) + goto out_si; + + inode = NULL; + npositive = 0; /* suppress a warning */ + parent = dentry->d_parent; /* dir inode is locked */ + di_read_lock_parent(parent, AuLock_IR); + err = au_alive_dir(parent); + if (!err) + err = au_digen_test(parent, au_sigen(sb)); + if (!err) { + /* regardless LOOKUP_CREATE, always ALLOW_NEG */ + npositive = au_lkup_dentry(dentry, au_dbtop(parent), + AuLkup_ALLOW_NEG); + err = npositive; + } + di_read_unlock(parent, AuLock_IR); + ret = ERR_PTR(err); + if (unlikely(err < 0)) + goto out_unlock; + + if (npositive) { + inode = au_new_inode(dentry, /*must_new*/0); + if (IS_ERR(inode)) { + ret = (void *)inode; + inode = NULL; + goto out_unlock; + } + } + + if (inode) + atomic_inc(&inode->i_count); + ret = d_splice_alias(inode, dentry); +#if 0 + if (unlikely(d_need_lookup(dentry))) { + spin_lock(&dentry->d_lock); + dentry->d_flags &= ~DCACHE_NEED_LOOKUP; + spin_unlock(&dentry->d_lock); + } else +#endif + if (inode) { + if (!IS_ERR(ret)) { + iput(inode); + if (ret && ret != dentry) + ii_write_unlock(inode); + } else { + ii_write_unlock(inode); + iput(inode); + inode = NULL; + } + } + +out_unlock: + di_write_unlock(dentry); +out_si: + si_read_unlock(sb); +out: + return ret; +} + +/* ---------------------------------------------------------------------- */ + +struct aopen_node { + struct hlist_bl_node hblist; + struct file *file, *h_file; +}; + +static int au_do_aopen(struct inode *inode, struct file *file) +{ + struct hlist_bl_head *aopen; + struct hlist_bl_node *pos; + struct aopen_node *node; + struct au_do_open_args args = { + .aopen = 1, + .open = au_do_open_nondir + }; + + aopen = &au_sbi(inode->i_sb)->si_aopen; + hlist_bl_lock(aopen); + hlist_bl_for_each_entry(node, pos, aopen, hblist) + if (node->file == file) { + args.h_file = node->h_file; + break; + } + hlist_bl_unlock(aopen); + /* AuDebugOn(!args.h_file); */ + + return au_do_open(file, &args); +} + +static int aufs_atomic_open(struct inode *dir, struct dentry *dentry, + struct file *file, unsigned int open_flag, + umode_t create_mode, int *opened) +{ + int err, unlocked, h_opened = *opened; + unsigned int lkup_flags; + struct dentry *parent, *d; + struct hlist_bl_head *aopen; + struct vfsub_aopen_args args = { + .open_flag = open_flag, + .create_mode = create_mode, + .opened = &h_opened + }; + struct aopen_node aopen_node = { + .file = file + }; + + IMustLock(dir); + AuDbg("open_flag 0%o\n", open_flag); + AuDbgDentry(dentry); + + err = 0; + if (!au_di(dentry)) { + lkup_flags = LOOKUP_OPEN; + if (open_flag & O_CREAT) + lkup_flags |= LOOKUP_CREATE; + d = aufs_lookup(dir, dentry, lkup_flags); + if (IS_ERR(d)) { + err = PTR_ERR(d); + AuTraceErr(err); + goto out; + } else if (d) { + /* + * obsoleted dentry found. + * another error will be returned later. + */ + d_drop(d); + AuDbgDentry(d); + dput(d); + } + AuDbgDentry(dentry); + } + + if (d_is_positive(dentry) + || d_unhashed(dentry) + || d_unlinked(dentry) + || !(open_flag & O_CREAT)) + goto out_no_open; + + unlocked = 0; + err = aufs_read_lock(dentry, AuLock_DW | AuLock_FLUSH | AuLock_GEN); + if (unlikely(err)) + goto out; + + parent = dentry->d_parent; /* dir is locked */ + di_write_lock_parent(parent); + err = au_lkup_dentry(dentry, /*btop*/0, AuLkup_ALLOW_NEG); + if (unlikely(err)) + goto out_unlock; + + AuDbgDentry(dentry); + if (d_is_positive(dentry)) + goto out_unlock; + + args.file = get_empty_filp(); + err = PTR_ERR(args.file); + if (IS_ERR(args.file)) + goto out_unlock; + + args.file->f_flags = file->f_flags; + err = au_aopen_or_create(dir, dentry, &args); + AuTraceErr(err); + AuDbgFile(args.file); + if (unlikely(err < 0)) { + if (h_opened & FILE_OPENED) + fput(args.file); + else + put_filp(args.file); + goto out_unlock; + } + di_write_unlock(parent); + di_write_unlock(dentry); + unlocked = 1; + + /* some filesystems don't set FILE_CREATED while succeeded? */ + *opened |= FILE_CREATED; + if (h_opened & FILE_OPENED) + aopen_node.h_file = args.file; + else { + put_filp(args.file); + args.file = NULL; + } + aopen = &au_sbi(dir->i_sb)->si_aopen; + au_hbl_add(&aopen_node.hblist, aopen); + err = finish_open(file, dentry, au_do_aopen, opened); + au_hbl_del(&aopen_node.hblist, aopen); + AuTraceErr(err); + AuDbgFile(file); + if (aopen_node.h_file) + fput(aopen_node.h_file); + +out_unlock: + if (unlocked) + si_read_unlock(dentry->d_sb); + else { + di_write_unlock(parent); + aufs_read_unlock(dentry, AuLock_DW); + } + AuDbgDentry(dentry); + if (unlikely(err < 0)) + goto out; +out_no_open: + if (err >= 0 && !(*opened & FILE_CREATED)) { + AuLabel(out_no_open); + dget(dentry); + err = finish_no_open(file, dentry); + } +out: + AuDbg("%pd%s%s\n", dentry, + (*opened & FILE_CREATED) ? " created" : "", + (*opened & FILE_OPENED) ? " opened" : ""); + AuTraceErr(err); + return err; +} + + +/* ---------------------------------------------------------------------- */ + +static int au_wr_dir_cpup(struct dentry *dentry, struct dentry *parent, + const unsigned char add_entry, aufs_bindex_t bcpup, + aufs_bindex_t btop) +{ + int err; + struct dentry *h_parent; + struct inode *h_dir; + + if (add_entry) + IMustLock(d_inode(parent)); + else + di_write_lock_parent(parent); + + err = 0; + if (!au_h_dptr(parent, bcpup)) { + if (btop > bcpup) + err = au_cpup_dirs(dentry, bcpup); + else if (btop < bcpup) + err = au_cpdown_dirs(dentry, bcpup); + else + BUG(); + } + if (!err && add_entry && !au_ftest_wrdir(add_entry, TMPFILE)) { + h_parent = au_h_dptr(parent, bcpup); + h_dir = d_inode(h_parent); + vfsub_inode_lock_shared_nested(h_dir, AuLsc_I_PARENT); + err = au_lkup_neg(dentry, bcpup, /*wh*/0); + /* todo: no unlock here */ + inode_unlock_shared(h_dir); + + AuDbg("bcpup %d\n", bcpup); + if (!err) { + if (d_really_is_negative(dentry)) + au_set_h_dptr(dentry, btop, NULL); + au_update_dbrange(dentry, /*do_put_zero*/0); + } + } + + if (!add_entry) + di_write_unlock(parent); + if (!err) + err = bcpup; /* success */ + + AuTraceErr(err); + return err; +} + +/* + * decide the branch and the parent dir where we will create a new entry. + * returns new bindex or an error. + * copyup the parent dir if needed. + */ +int au_wr_dir(struct dentry *dentry, struct dentry *src_dentry, + struct au_wr_dir_args *args) +{ + int err; + unsigned int flags; + aufs_bindex_t bcpup, btop, src_btop; + const unsigned char add_entry + = au_ftest_wrdir(args->flags, ADD_ENTRY) + | au_ftest_wrdir(args->flags, TMPFILE); + struct super_block *sb; + struct dentry *parent; + struct au_sbinfo *sbinfo; + + sb = dentry->d_sb; + sbinfo = au_sbi(sb); + parent = dget_parent(dentry); + btop = au_dbtop(dentry); + bcpup = btop; + if (args->force_btgt < 0) { + if (src_dentry) { + src_btop = au_dbtop(src_dentry); + if (src_btop < btop) + bcpup = src_btop; + } else if (add_entry) { + flags = 0; + if (au_ftest_wrdir(args->flags, ISDIR)) + au_fset_wbr(flags, DIR); + err = AuWbrCreate(sbinfo, dentry, flags); + bcpup = err; + } + + if (bcpup < 0 || au_test_ro(sb, bcpup, d_inode(dentry))) { + if (add_entry) + err = AuWbrCopyup(sbinfo, dentry); + else { + if (!IS_ROOT(dentry)) { + di_read_lock_parent(parent, !AuLock_IR); + err = AuWbrCopyup(sbinfo, dentry); + di_read_unlock(parent, !AuLock_IR); + } else + err = AuWbrCopyup(sbinfo, dentry); + } + bcpup = err; + if (unlikely(err < 0)) + goto out; + } + } else { + bcpup = args->force_btgt; + AuDebugOn(au_test_ro(sb, bcpup, d_inode(dentry))); + } + + AuDbg("btop %d, bcpup %d\n", btop, bcpup); + err = bcpup; + if (bcpup == btop) + goto out; /* success */ + + /* copyup the new parent into the branch we process */ + err = au_wr_dir_cpup(dentry, parent, add_entry, bcpup, btop); + if (err >= 0) { + if (d_really_is_negative(dentry)) { + au_set_h_dptr(dentry, btop, NULL); + au_set_dbtop(dentry, bcpup); + au_set_dbbot(dentry, bcpup); + } + AuDebugOn(add_entry + && !au_ftest_wrdir(args->flags, TMPFILE) + && !au_h_dptr(dentry, bcpup)); + } + +out: + dput(parent); + return err; +} + +/* ---------------------------------------------------------------------- */ + +void au_pin_hdir_unlock(struct au_pin *p) +{ + if (p->hdir) + au_hn_inode_unlock(p->hdir); +} + +int au_pin_hdir_lock(struct au_pin *p) +{ + int err; + + err = 0; + if (!p->hdir) + goto out; + + /* even if an error happens later, keep this lock */ + au_hn_inode_lock_nested(p->hdir, p->lsc_hi); + + err = -EBUSY; + if (unlikely(p->hdir->hi_inode != d_inode(p->h_parent))) + goto out; + + err = 0; + if (p->h_dentry) + err = au_h_verify(p->h_dentry, p->udba, p->hdir->hi_inode, + p->h_parent, p->br); + +out: + return err; +} + +int au_pin_hdir_relock(struct au_pin *p) +{ + int err, i; + struct inode *h_i; + struct dentry *h_d[] = { + p->h_dentry, + p->h_parent + }; + + err = au_pin_hdir_lock(p); + if (unlikely(err)) + goto out; + + for (i = 0; !err && i < sizeof(h_d)/sizeof(*h_d); i++) { + if (!h_d[i]) + continue; + if (d_is_positive(h_d[i])) { + h_i = d_inode(h_d[i]); + err = !h_i->i_nlink; + } + } + +out: + return err; +} + +static void au_pin_hdir_set_owner(struct au_pin *p, struct task_struct *task) +{ +#if !defined(CONFIG_RWSEM_GENERIC_SPINLOCK) && defined(CONFIG_RWSEM_SPIN_ON_OWNER) + p->hdir->hi_inode->i_rwsem.owner = task; +#endif +} + +void au_pin_hdir_acquire_nest(struct au_pin *p) +{ + if (p->hdir) { + rwsem_acquire_nest(&p->hdir->hi_inode->i_rwsem.dep_map, + p->lsc_hi, 0, NULL, _RET_IP_); + au_pin_hdir_set_owner(p, current); + } +} + +void au_pin_hdir_release(struct au_pin *p) +{ + if (p->hdir) { + au_pin_hdir_set_owner(p, p->task); + rwsem_release(&p->hdir->hi_inode->i_rwsem.dep_map, 1, _RET_IP_); + } +} + +struct dentry *au_pinned_h_parent(struct au_pin *pin) +{ + if (pin && pin->parent) + return au_h_dptr(pin->parent, pin->bindex); + return NULL; +} + +void au_unpin(struct au_pin *p) +{ + if (p->hdir) + au_pin_hdir_unlock(p); + if (p->h_mnt && au_ftest_pin(p->flags, MNT_WRITE)) + vfsub_mnt_drop_write(p->h_mnt); + if (!p->hdir) + return; + + if (!au_ftest_pin(p->flags, DI_LOCKED)) + di_read_unlock(p->parent, AuLock_IR); + iput(p->hdir->hi_inode); + dput(p->parent); + p->parent = NULL; + p->hdir = NULL; + p->h_mnt = NULL; + /* do not clear p->task */ +} + +int au_do_pin(struct au_pin *p) +{ + int err; + struct super_block *sb; + struct inode *h_dir; + + err = 0; + sb = p->dentry->d_sb; + p->br = au_sbr(sb, p->bindex); + if (IS_ROOT(p->dentry)) { + if (au_ftest_pin(p->flags, MNT_WRITE)) { + p->h_mnt = au_br_mnt(p->br); + err = vfsub_mnt_want_write(p->h_mnt); + if (unlikely(err)) { + au_fclr_pin(p->flags, MNT_WRITE); + goto out_err; + } + } + goto out; + } + + p->h_dentry = NULL; + if (p->bindex <= au_dbbot(p->dentry)) + p->h_dentry = au_h_dptr(p->dentry, p->bindex); + + p->parent = dget_parent(p->dentry); + if (!au_ftest_pin(p->flags, DI_LOCKED)) + di_read_lock(p->parent, AuLock_IR, p->lsc_di); + + h_dir = NULL; + p->h_parent = au_h_dptr(p->parent, p->bindex); + p->hdir = au_hi(d_inode(p->parent), p->bindex); + if (p->hdir) + h_dir = p->hdir->hi_inode; + + /* + * udba case, or + * if DI_LOCKED is not set, then p->parent may be different + * and h_parent can be NULL. + */ + if (unlikely(!p->hdir || !h_dir || !p->h_parent)) { + err = -EBUSY; + if (!au_ftest_pin(p->flags, DI_LOCKED)) + di_read_unlock(p->parent, AuLock_IR); + dput(p->parent); + p->parent = NULL; + goto out_err; + } + + if (au_ftest_pin(p->flags, MNT_WRITE)) { + p->h_mnt = au_br_mnt(p->br); + err = vfsub_mnt_want_write(p->h_mnt); + if (unlikely(err)) { + au_fclr_pin(p->flags, MNT_WRITE); + if (!au_ftest_pin(p->flags, DI_LOCKED)) + di_read_unlock(p->parent, AuLock_IR); + dput(p->parent); + p->parent = NULL; + goto out_err; + } + } + + au_igrab(h_dir); + err = au_pin_hdir_lock(p); + if (!err) + goto out; /* success */ + + au_unpin(p); + +out_err: + pr_err("err %d\n", err); + err = au_busy_or_stale(); +out: + return err; +} + +void au_pin_init(struct au_pin *p, struct dentry *dentry, + aufs_bindex_t bindex, int lsc_di, int lsc_hi, + unsigned int udba, unsigned char flags) +{ + p->dentry = dentry; + p->udba = udba; + p->lsc_di = lsc_di; + p->lsc_hi = lsc_hi; + p->flags = flags; + p->bindex = bindex; + + p->parent = NULL; + p->hdir = NULL; + p->h_mnt = NULL; + + p->h_dentry = NULL; + p->h_parent = NULL; + p->br = NULL; + p->task = current; +} + +int au_pin(struct au_pin *pin, struct dentry *dentry, aufs_bindex_t bindex, + unsigned int udba, unsigned char flags) +{ + au_pin_init(pin, dentry, bindex, AuLsc_DI_PARENT, AuLsc_I_PARENT2, + udba, flags); + return au_do_pin(pin); +} + +/* ---------------------------------------------------------------------- */ + +/* + * ->setattr() and ->getattr() are called in various cases. + * chmod, stat: dentry is revalidated. + * fchmod, fstat: file and dentry are not revalidated, additionally they may be + * unhashed. + * for ->setattr(), ia->ia_file is passed from ftruncate only. + */ +/* todo: consolidate with do_refresh() and simple_reval_dpath() */ +int au_reval_for_attr(struct dentry *dentry, unsigned int sigen) +{ + int err; + struct dentry *parent; + + err = 0; + if (au_digen_test(dentry, sigen)) { + parent = dget_parent(dentry); + di_read_lock_parent(parent, AuLock_IR); + err = au_refresh_dentry(dentry, parent); + di_read_unlock(parent, AuLock_IR); + dput(parent); + } + + AuTraceErr(err); + return err; +} + +int au_pin_and_icpup(struct dentry *dentry, struct iattr *ia, + struct au_icpup_args *a) +{ + int err; + loff_t sz; + aufs_bindex_t btop, ibtop; + struct dentry *hi_wh, *parent; + struct inode *inode; + struct au_wr_dir_args wr_dir_args = { + .force_btgt = -1, + .flags = 0 + }; + + if (d_is_dir(dentry)) + au_fset_wrdir(wr_dir_args.flags, ISDIR); + /* plink or hi_wh() case */ + btop = au_dbtop(dentry); + inode = d_inode(dentry); + ibtop = au_ibtop(inode); + if (btop != ibtop && !au_test_ro(inode->i_sb, ibtop, inode)) + wr_dir_args.force_btgt = ibtop; + err = au_wr_dir(dentry, /*src_dentry*/NULL, &wr_dir_args); + if (unlikely(err < 0)) + goto out; + a->btgt = err; + if (err != btop) + au_fset_icpup(a->flags, DID_CPUP); + + err = 0; + a->pin_flags = AuPin_MNT_WRITE; + parent = NULL; + if (!IS_ROOT(dentry)) { + au_fset_pin(a->pin_flags, DI_LOCKED); + parent = dget_parent(dentry); + di_write_lock_parent(parent); + } + + err = au_pin(&a->pin, dentry, a->btgt, a->udba, a->pin_flags); + if (unlikely(err)) + goto out_parent; + + sz = -1; + a->h_path.dentry = au_h_dptr(dentry, btop); + a->h_inode = d_inode(a->h_path.dentry); + if (ia && (ia->ia_valid & ATTR_SIZE)) { + vfsub_inode_lock_shared_nested(a->h_inode, AuLsc_I_CHILD); + if (ia->ia_size < i_size_read(a->h_inode)) + sz = ia->ia_size; + inode_unlock_shared(a->h_inode); + } + + hi_wh = NULL; + if (au_ftest_icpup(a->flags, DID_CPUP) && d_unlinked(dentry)) { + hi_wh = au_hi_wh(inode, a->btgt); + if (!hi_wh) { + struct au_cp_generic cpg = { + .dentry = dentry, + .bdst = a->btgt, + .bsrc = -1, + .len = sz, + .pin = &a->pin + }; + err = au_sio_cpup_wh(&cpg, /*file*/NULL); + if (unlikely(err)) + goto out_unlock; + hi_wh = au_hi_wh(inode, a->btgt); + /* todo: revalidate hi_wh? */ + } + } + + if (parent) { + au_pin_set_parent_lflag(&a->pin, /*lflag*/0); + di_downgrade_lock(parent, AuLock_IR); + dput(parent); + parent = NULL; + } + if (!au_ftest_icpup(a->flags, DID_CPUP)) + goto out; /* success */ + + if (!d_unhashed(dentry)) { + struct au_cp_generic cpg = { + .dentry = dentry, + .bdst = a->btgt, + .bsrc = btop, + .len = sz, + .pin = &a->pin, + .flags = AuCpup_DTIME | AuCpup_HOPEN + }; + err = au_sio_cpup_simple(&cpg); + if (!err) + a->h_path.dentry = au_h_dptr(dentry, a->btgt); + } else if (!hi_wh) + a->h_path.dentry = au_h_dptr(dentry, a->btgt); + else + a->h_path.dentry = hi_wh; /* do not dget here */ + +out_unlock: + a->h_inode = d_inode(a->h_path.dentry); + if (!err) + goto out; /* success */ + au_unpin(&a->pin); +out_parent: + if (parent) { + di_write_unlock(parent); + dput(parent); + } +out: + if (!err) + inode_lock_nested(a->h_inode, AuLsc_I_CHILD); + return err; +} + +static int aufs_setattr(struct dentry *dentry, struct iattr *ia) +{ + int err; + struct inode *inode, *delegated; + struct super_block *sb; + struct file *file; + struct au_icpup_args *a; + + inode = d_inode(dentry); + IMustLock(inode); + + err = setattr_prepare(dentry, ia); + if (unlikely(err)) + goto out; + + err = -ENOMEM; + a = kzalloc(sizeof(*a), GFP_NOFS); + if (unlikely(!a)) + goto out; + + if (ia->ia_valid & (ATTR_KILL_SUID | ATTR_KILL_SGID)) + ia->ia_valid &= ~ATTR_MODE; + + file = NULL; + sb = dentry->d_sb; + err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM); + if (unlikely(err)) + goto out_kfree; + + if (ia->ia_valid & ATTR_FILE) { + /* currently ftruncate(2) only */ + AuDebugOn(!d_is_reg(dentry)); + file = ia->ia_file; + err = au_reval_and_lock_fdi(file, au_reopen_nondir, /*wlock*/1, + /*fi_lsc*/0); + if (unlikely(err)) + goto out_si; + ia->ia_file = au_hf_top(file); + a->udba = AuOpt_UDBA_NONE; + } else { + /* fchmod() doesn't pass ia_file */ + a->udba = au_opt_udba(sb); + di_write_lock_child(dentry); + /* no d_unlinked(), to set UDBA_NONE for root */ + if (d_unhashed(dentry)) + a->udba = AuOpt_UDBA_NONE; + if (a->udba != AuOpt_UDBA_NONE) { + AuDebugOn(IS_ROOT(dentry)); + err = au_reval_for_attr(dentry, au_sigen(sb)); + if (unlikely(err)) + goto out_dentry; + } + } + + err = au_pin_and_icpup(dentry, ia, a); + if (unlikely(err < 0)) + goto out_dentry; + if (au_ftest_icpup(a->flags, DID_CPUP)) { + ia->ia_file = NULL; + ia->ia_valid &= ~ATTR_FILE; + } + + a->h_path.mnt = au_sbr_mnt(sb, a->btgt); + if ((ia->ia_valid & (ATTR_MODE | ATTR_CTIME)) + == (ATTR_MODE | ATTR_CTIME)) { + err = security_path_chmod(&a->h_path, ia->ia_mode); + if (unlikely(err)) + goto out_unlock; + } else if ((ia->ia_valid & (ATTR_UID | ATTR_GID)) + && (ia->ia_valid & ATTR_CTIME)) { + err = security_path_chown(&a->h_path, ia->ia_uid, ia->ia_gid); + if (unlikely(err)) + goto out_unlock; + } + + if (ia->ia_valid & ATTR_SIZE) { + struct file *f; + + if (ia->ia_size < i_size_read(inode)) + /* unmap only */ + truncate_setsize(inode, ia->ia_size); + + f = NULL; + if (ia->ia_valid & ATTR_FILE) + f = ia->ia_file; + inode_unlock(a->h_inode); + err = vfsub_trunc(&a->h_path, ia->ia_size, ia->ia_valid, f); + inode_lock_nested(a->h_inode, AuLsc_I_CHILD); + } else { + delegated = NULL; + while (1) { + err = vfsub_notify_change(&a->h_path, ia, &delegated); + if (delegated) { + err = break_deleg_wait(&delegated); + if (!err) + continue; + } + break; + } + } + /* + * regardless aufs 'acl' option setting. + * why don't all acl-aware fs call this func from their ->setattr()? + */ + if (!err && (ia->ia_valid & ATTR_MODE)) + err = vfsub_acl_chmod(a->h_inode, ia->ia_mode); + if (!err) + au_cpup_attr_changeable(inode); + +out_unlock: + inode_unlock(a->h_inode); + au_unpin(&a->pin); + if (unlikely(err)) + au_update_dbtop(dentry); +out_dentry: + di_write_unlock(dentry); + if (file) { + fi_write_unlock(file); + ia->ia_file = file; + ia->ia_valid |= ATTR_FILE; + } +out_si: + si_read_unlock(sb); +out_kfree: + kfree(a); +out: + AuTraceErr(err); + return err; +} + +#if IS_ENABLED(CONFIG_AUFS_XATTR) || IS_ENABLED(CONFIG_FS_POSIX_ACL) +static int au_h_path_to_set_attr(struct dentry *dentry, + struct au_icpup_args *a, struct path *h_path) +{ + int err; + struct super_block *sb; + + sb = dentry->d_sb; + a->udba = au_opt_udba(sb); + /* no d_unlinked(), to set UDBA_NONE for root */ + if (d_unhashed(dentry)) + a->udba = AuOpt_UDBA_NONE; + if (a->udba != AuOpt_UDBA_NONE) { + AuDebugOn(IS_ROOT(dentry)); + err = au_reval_for_attr(dentry, au_sigen(sb)); + if (unlikely(err)) + goto out; + } + err = au_pin_and_icpup(dentry, /*ia*/NULL, a); + if (unlikely(err < 0)) + goto out; + + h_path->dentry = a->h_path.dentry; + h_path->mnt = au_sbr_mnt(sb, a->btgt); + +out: + return err; +} + +ssize_t au_sxattr(struct dentry *dentry, struct inode *inode, + struct au_sxattr *arg) +{ + int err; + struct path h_path; + struct super_block *sb; + struct au_icpup_args *a; + struct inode *h_inode; + + IMustLock(inode); + + err = -ENOMEM; + a = kzalloc(sizeof(*a), GFP_NOFS); + if (unlikely(!a)) + goto out; + + sb = dentry->d_sb; + err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM); + if (unlikely(err)) + goto out_kfree; + + h_path.dentry = NULL; /* silence gcc */ + di_write_lock_child(dentry); + err = au_h_path_to_set_attr(dentry, a, &h_path); + if (unlikely(err)) + goto out_di; + + inode_unlock(a->h_inode); + switch (arg->type) { + case AU_XATTR_SET: + AuDebugOn(d_is_negative(h_path.dentry)); + err = vfsub_setxattr(h_path.dentry, + arg->u.set.name, arg->u.set.value, + arg->u.set.size, arg->u.set.flags); + break; + case AU_ACL_SET: + err = -EOPNOTSUPP; + h_inode = d_inode(h_path.dentry); + if (h_inode->i_op->set_acl) + /* this will call posix_acl_update_mode */ + err = h_inode->i_op->set_acl(h_inode, + arg->u.acl_set.acl, + arg->u.acl_set.type); + break; + } + if (!err) + au_cpup_attr_timesizes(inode); + + au_unpin(&a->pin); + if (unlikely(err)) + au_update_dbtop(dentry); + +out_di: + di_write_unlock(dentry); + si_read_unlock(sb); +out_kfree: + kfree(a); +out: + AuTraceErr(err); + return err; +} +#endif + +static void au_refresh_iattr(struct inode *inode, struct kstat *st, + unsigned int nlink) +{ + unsigned int n; + + inode->i_mode = st->mode; + /* don't i_[ug]id_write() here */ + inode->i_uid = st->uid; + inode->i_gid = st->gid; + inode->i_atime = st->atime; + inode->i_mtime = st->mtime; + inode->i_ctime = st->ctime; + + au_cpup_attr_nlink(inode, /*force*/0); + if (S_ISDIR(inode->i_mode)) { + n = inode->i_nlink; + n -= nlink; + n += st->nlink; + smp_mb(); /* for i_nlink */ + /* 0 can happen */ + set_nlink(inode, n); + } + + spin_lock(&inode->i_lock); + inode->i_blocks = st->blocks; + i_size_write(inode, st->size); + spin_unlock(&inode->i_lock); +} + +/* + * common routine for aufs_getattr() and au_getxattr(). + * returns zero or negative (an error). + * @dentry will be read-locked in success. + */ +int au_h_path_getattr(struct dentry *dentry, int force, struct path *h_path, + int locked) +{ + int err; + unsigned int mnt_flags, sigen; + unsigned char udba_none; + aufs_bindex_t bindex; + struct super_block *sb, *h_sb; + struct inode *inode; + + h_path->mnt = NULL; + h_path->dentry = NULL; + + err = 0; + sb = dentry->d_sb; + mnt_flags = au_mntflags(sb); + udba_none = !!au_opt_test(mnt_flags, UDBA_NONE); + + if (unlikely(locked)) + goto body; /* skip locking dinfo */ + + /* support fstat(2) */ + if (!d_unlinked(dentry) && !udba_none) { + sigen = au_sigen(sb); + err = au_digen_test(dentry, sigen); + if (!err) { + di_read_lock_child(dentry, AuLock_IR); + err = au_dbrange_test(dentry); + if (unlikely(err)) { + di_read_unlock(dentry, AuLock_IR); + goto out; + } + } else { + AuDebugOn(IS_ROOT(dentry)); + di_write_lock_child(dentry); + err = au_dbrange_test(dentry); + if (!err) + err = au_reval_for_attr(dentry, sigen); + if (!err) + di_downgrade_lock(dentry, AuLock_IR); + else { + di_write_unlock(dentry); + goto out; + } + } + } else + di_read_lock_child(dentry, AuLock_IR); + +body: + inode = d_inode(dentry); + bindex = au_ibtop(inode); + h_path->mnt = au_sbr_mnt(sb, bindex); + h_sb = h_path->mnt->mnt_sb; + if (!force + && !au_test_fs_bad_iattr(h_sb) + && udba_none) + goto out; /* success */ + + if (au_dbtop(dentry) == bindex) + h_path->dentry = au_h_dptr(dentry, bindex); + else if (au_opt_test(mnt_flags, PLINK) && au_plink_test(inode)) { + h_path->dentry = au_plink_lkup(inode, bindex); + if (IS_ERR(h_path->dentry)) + /* pretending success */ + h_path->dentry = NULL; + else + dput(h_path->dentry); + } + +out: + return err; +} + +static int aufs_getattr(const struct path *path, struct kstat *st, + u32 request, unsigned int query) +{ + int err; + unsigned char positive; + struct path h_path; + struct dentry *dentry; + struct inode *inode; + struct super_block *sb; + + dentry = path->dentry; + inode = d_inode(dentry); + sb = dentry->d_sb; + err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM); + if (unlikely(err)) + goto out; + err = au_h_path_getattr(dentry, /*force*/0, &h_path, /*locked*/0); + if (unlikely(err)) + goto out_si; + if (unlikely(!h_path.dentry)) + /* illegally overlapped or something */ + goto out_fill; /* pretending success */ + + positive = d_is_positive(h_path.dentry); + if (positive) + /* no vfsub version */ + err = vfs_getattr(&h_path, st, request, query); + if (!err) { + if (positive) + au_refresh_iattr(inode, st, + d_inode(h_path.dentry)->i_nlink); + goto out_fill; /* success */ + } + AuTraceErr(err); + goto out_di; + +out_fill: + generic_fillattr(inode, st); +out_di: + di_read_unlock(dentry, AuLock_IR); +out_si: + si_read_unlock(sb); +out: + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static const char *aufs_get_link(struct dentry *dentry, struct inode *inode, + struct delayed_call *done) +{ + const char *ret; + struct dentry *h_dentry; + struct inode *h_inode; + int err; + aufs_bindex_t bindex; + + ret = NULL; /* suppress a warning */ + err = -ECHILD; + if (!dentry) + goto out; + + err = aufs_read_lock(dentry, AuLock_IR | AuLock_GEN); + if (unlikely(err)) + goto out; + + err = au_d_hashed_positive(dentry); + if (unlikely(err)) + goto out_unlock; + + err = -EINVAL; + inode = d_inode(dentry); + bindex = au_ibtop(inode); + h_inode = au_h_iptr(inode, bindex); + if (unlikely(!h_inode->i_op->get_link)) + goto out_unlock; + + err = -EBUSY; + h_dentry = NULL; + if (au_dbtop(dentry) <= bindex) { + h_dentry = au_h_dptr(dentry, bindex); + if (h_dentry) + dget(h_dentry); + } + if (!h_dentry) { + h_dentry = d_find_any_alias(h_inode); + if (IS_ERR(h_dentry)) { + err = PTR_ERR(h_dentry); + goto out_unlock; + } + } + if (unlikely(!h_dentry)) + goto out_unlock; + + err = 0; + AuDbg("%pf\n", h_inode->i_op->get_link); + AuDbgDentry(h_dentry); + ret = vfs_get_link(h_dentry, done); + dput(h_dentry); + if (IS_ERR(ret)) + err = PTR_ERR(ret); + +out_unlock: + aufs_read_unlock(dentry, AuLock_IR); +out: + if (unlikely(err)) + ret = ERR_PTR(err); + AuTraceErrPtr(ret); + return ret; +} + +/* ---------------------------------------------------------------------- */ + +static int au_is_special(struct inode *inode) +{ + return (inode->i_mode & (S_IFBLK | S_IFCHR | S_IFIFO | S_IFSOCK)); +} + +static int aufs_update_time(struct inode *inode, struct timespec *ts, int flags) +{ + int err; + aufs_bindex_t bindex; + struct super_block *sb; + struct inode *h_inode; + struct vfsmount *h_mnt; + + sb = inode->i_sb; + WARN_ONCE((flags & S_ATIME) && !IS_NOATIME(inode), + "unexpected s_flags 0x%lx", sb->s_flags); + + /* mmap_sem might be acquired already, cf. aufs_mmap() */ + lockdep_off(); + si_read_lock(sb, AuLock_FLUSH); + ii_write_lock_child(inode); + + err = 0; + bindex = au_ibtop(inode); + h_inode = au_h_iptr(inode, bindex); + if (!au_test_ro(sb, bindex, inode)) { + h_mnt = au_sbr_mnt(sb, bindex); + err = vfsub_mnt_want_write(h_mnt); + if (!err) { + err = vfsub_update_time(h_inode, ts, flags); + vfsub_mnt_drop_write(h_mnt); + } + } else if (au_is_special(h_inode)) { + /* + * Never copy-up here. + * These special files may already be opened and used for + * communicating. If we copied it up, then the communication + * would be corrupted. + */ + AuWarn1("timestamps for i%lu are ignored " + "since it is on readonly branch (hi%lu).\n", + inode->i_ino, h_inode->i_ino); + } else if (flags & ~S_ATIME) { + err = -EIO; + AuIOErr1("unexpected flags 0x%x\n", flags); + AuDebugOn(1); + } + + if (!err) + au_cpup_attr_timesizes(inode); + ii_write_unlock(inode); + si_read_unlock(sb); + lockdep_on(); + + if (!err && (flags & S_VERSION)) + inode_inc_iversion(inode); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* no getattr version will be set by module.c:aufs_init() */ +struct inode_operations aufs_iop_nogetattr[AuIop_Last], + aufs_iop[] = { + [AuIop_SYMLINK] = { + .permission = aufs_permission, +#ifdef CONFIG_FS_POSIX_ACL + .get_acl = aufs_get_acl, + .set_acl = aufs_set_acl, /* unsupport for symlink? */ +#endif + + .setattr = aufs_setattr, + .getattr = aufs_getattr, + +#ifdef CONFIG_AUFS_XATTR + .listxattr = aufs_listxattr, +#endif + + .get_link = aufs_get_link, + + /* .update_time = aufs_update_time */ + }, + [AuIop_DIR] = { + .create = aufs_create, + .lookup = aufs_lookup, + .link = aufs_link, + .unlink = aufs_unlink, + .symlink = aufs_symlink, + .mkdir = aufs_mkdir, + .rmdir = aufs_rmdir, + .mknod = aufs_mknod, + .rename = aufs_rename, + + .permission = aufs_permission, +#ifdef CONFIG_FS_POSIX_ACL + .get_acl = aufs_get_acl, + .set_acl = aufs_set_acl, +#endif + + .setattr = aufs_setattr, + .getattr = aufs_getattr, + +#ifdef CONFIG_AUFS_XATTR + .listxattr = aufs_listxattr, +#endif + + .update_time = aufs_update_time, + .atomic_open = aufs_atomic_open, + .tmpfile = aufs_tmpfile + }, + [AuIop_OTHER] = { + .permission = aufs_permission, +#ifdef CONFIG_FS_POSIX_ACL + .get_acl = aufs_get_acl, + .set_acl = aufs_set_acl, +#endif + + .setattr = aufs_setattr, + .getattr = aufs_getattr, + +#ifdef CONFIG_AUFS_XATTR + .listxattr = aufs_listxattr, +#endif + + .update_time = aufs_update_time + } +}; diff --git a/include/fs/aufs/i_op_add.c b/include/fs/aufs/i_op_add.c new file mode 100644 index 00000000000..361245ef734 --- /dev/null +++ b/include/fs/aufs/i_op_add.c @@ -0,0 +1,920 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * inode operations (add entry) + */ + +#include "aufs.h" + +/* + * final procedure of adding a new entry, except link(2). + * remove whiteout, instantiate, copyup the parent dir's times and size + * and update version. + * if it failed, re-create the removed whiteout. + */ +static int epilog(struct inode *dir, aufs_bindex_t bindex, + struct dentry *wh_dentry, struct dentry *dentry) +{ + int err, rerr; + aufs_bindex_t bwh; + struct path h_path; + struct super_block *sb; + struct inode *inode, *h_dir; + struct dentry *wh; + + bwh = -1; + sb = dir->i_sb; + if (wh_dentry) { + h_dir = d_inode(wh_dentry->d_parent); /* dir inode is locked */ + IMustLock(h_dir); + AuDebugOn(au_h_iptr(dir, bindex) != h_dir); + bwh = au_dbwh(dentry); + h_path.dentry = wh_dentry; + h_path.mnt = au_sbr_mnt(sb, bindex); + err = au_wh_unlink_dentry(au_h_iptr(dir, bindex), &h_path, + dentry); + if (unlikely(err)) + goto out; + } + + inode = au_new_inode(dentry, /*must_new*/1); + if (!IS_ERR(inode)) { + d_instantiate(dentry, inode); + dir = d_inode(dentry->d_parent); /* dir inode is locked */ + IMustLock(dir); + au_dir_ts(dir, bindex); + dir->i_version++; + au_fhsm_wrote(sb, bindex, /*force*/0); + return 0; /* success */ + } + + err = PTR_ERR(inode); + if (!wh_dentry) + goto out; + + /* revert */ + /* dir inode is locked */ + wh = au_wh_create(dentry, bwh, wh_dentry->d_parent); + rerr = PTR_ERR(wh); + if (IS_ERR(wh)) { + AuIOErr("%pd reverting whiteout failed(%d, %d)\n", + dentry, err, rerr); + err = -EIO; + } else + dput(wh); + +out: + return err; +} + +static int au_d_may_add(struct dentry *dentry) +{ + int err; + + err = 0; + if (unlikely(d_unhashed(dentry))) + err = -ENOENT; + if (unlikely(d_really_is_positive(dentry))) + err = -EEXIST; + return err; +} + +/* + * simple tests for the adding inode operations. + * following the checks in vfs, plus the parent-child relationship. + */ +int au_may_add(struct dentry *dentry, aufs_bindex_t bindex, + struct dentry *h_parent, int isdir) +{ + int err; + umode_t h_mode; + struct dentry *h_dentry; + struct inode *h_inode; + + err = -ENAMETOOLONG; + if (unlikely(dentry->d_name.len > AUFS_MAX_NAMELEN)) + goto out; + + h_dentry = au_h_dptr(dentry, bindex); + if (d_really_is_negative(dentry)) { + err = -EEXIST; + if (unlikely(d_is_positive(h_dentry))) + goto out; + } else { + /* rename(2) case */ + err = -EIO; + if (unlikely(d_is_negative(h_dentry))) + goto out; + h_inode = d_inode(h_dentry); + if (unlikely(!h_inode->i_nlink)) + goto out; + + h_mode = h_inode->i_mode; + if (!isdir) { + err = -EISDIR; + if (unlikely(S_ISDIR(h_mode))) + goto out; + } else if (unlikely(!S_ISDIR(h_mode))) { + err = -ENOTDIR; + goto out; + } + } + + err = 0; + /* expected parent dir is locked */ + if (unlikely(h_parent != h_dentry->d_parent)) + err = -EIO; + +out: + AuTraceErr(err); + return err; +} + +/* + * initial procedure of adding a new entry. + * prepare writable branch and the parent dir, lock it, + * and lookup whiteout for the new entry. + */ +static struct dentry* +lock_hdir_lkup_wh(struct dentry *dentry, struct au_dtime *dt, + struct dentry *src_dentry, struct au_pin *pin, + struct au_wr_dir_args *wr_dir_args) +{ + struct dentry *wh_dentry, *h_parent; + struct super_block *sb; + struct au_branch *br; + int err; + unsigned int udba; + aufs_bindex_t bcpup; + + AuDbg("%pd\n", dentry); + + err = au_wr_dir(dentry, src_dentry, wr_dir_args); + bcpup = err; + wh_dentry = ERR_PTR(err); + if (unlikely(err < 0)) + goto out; + + sb = dentry->d_sb; + udba = au_opt_udba(sb); + err = au_pin(pin, dentry, bcpup, udba, + AuPin_DI_LOCKED | AuPin_MNT_WRITE); + wh_dentry = ERR_PTR(err); + if (unlikely(err)) + goto out; + + h_parent = au_pinned_h_parent(pin); + if (udba != AuOpt_UDBA_NONE + && au_dbtop(dentry) == bcpup) + err = au_may_add(dentry, bcpup, h_parent, + au_ftest_wrdir(wr_dir_args->flags, ISDIR)); + else if (unlikely(dentry->d_name.len > AUFS_MAX_NAMELEN)) + err = -ENAMETOOLONG; + wh_dentry = ERR_PTR(err); + if (unlikely(err)) + goto out_unpin; + + br = au_sbr(sb, bcpup); + if (dt) { + struct path tmp = { + .dentry = h_parent, + .mnt = au_br_mnt(br) + }; + au_dtime_store(dt, au_pinned_parent(pin), &tmp); + } + + wh_dentry = NULL; + if (bcpup != au_dbwh(dentry)) + goto out; /* success */ + + /* + * ENAMETOOLONG here means that if we allowed create such name, then it + * would not be able to removed in the future. So we don't allow such + * name here and we don't handle ENAMETOOLONG differently here. + */ + wh_dentry = au_wh_lkup(h_parent, &dentry->d_name, br); + +out_unpin: + if (IS_ERR(wh_dentry)) + au_unpin(pin); +out: + return wh_dentry; +} + +/* ---------------------------------------------------------------------- */ + +enum { Mknod, Symlink, Creat }; +struct simple_arg { + int type; + union { + struct { + umode_t mode; + bool want_excl; + bool try_aopen; + struct vfsub_aopen_args *aopen; + } c; + struct { + const char *symname; + } s; + struct { + umode_t mode; + dev_t dev; + } m; + } u; +}; + +static int add_simple(struct inode *dir, struct dentry *dentry, + struct simple_arg *arg) +{ + int err, rerr; + aufs_bindex_t btop; + unsigned char created; + const unsigned char try_aopen + = (arg->type == Creat && arg->u.c.try_aopen); + struct dentry *wh_dentry, *parent; + struct inode *h_dir; + struct super_block *sb; + struct au_branch *br; + /* to reuduce stack size */ + struct { + struct au_dtime dt; + struct au_pin pin; + struct path h_path; + struct au_wr_dir_args wr_dir_args; + } *a; + + AuDbg("%pd\n", dentry); + IMustLock(dir); + + err = -ENOMEM; + a = kmalloc(sizeof(*a), GFP_NOFS); + if (unlikely(!a)) + goto out; + a->wr_dir_args.force_btgt = -1; + a->wr_dir_args.flags = AuWrDir_ADD_ENTRY; + + parent = dentry->d_parent; /* dir inode is locked */ + if (!try_aopen) { + err = aufs_read_lock(dentry, AuLock_DW | AuLock_GEN); + if (unlikely(err)) + goto out_free; + } + err = au_d_may_add(dentry); + if (unlikely(err)) + goto out_unlock; + if (!try_aopen) + di_write_lock_parent(parent); + wh_dentry = lock_hdir_lkup_wh(dentry, &a->dt, /*src_dentry*/NULL, + &a->pin, &a->wr_dir_args); + err = PTR_ERR(wh_dentry); + if (IS_ERR(wh_dentry)) + goto out_parent; + + btop = au_dbtop(dentry); + sb = dentry->d_sb; + br = au_sbr(sb, btop); + a->h_path.dentry = au_h_dptr(dentry, btop); + a->h_path.mnt = au_br_mnt(br); + h_dir = au_pinned_h_dir(&a->pin); + switch (arg->type) { + case Creat: + err = 0; + if (!try_aopen || !h_dir->i_op->atomic_open) + err = vfsub_create(h_dir, &a->h_path, arg->u.c.mode, + arg->u.c.want_excl); + else + err = vfsub_atomic_open(h_dir, a->h_path.dentry, + arg->u.c.aopen, br); + break; + case Symlink: + err = vfsub_symlink(h_dir, &a->h_path, arg->u.s.symname); + break; + case Mknod: + err = vfsub_mknod(h_dir, &a->h_path, arg->u.m.mode, + arg->u.m.dev); + break; + default: + BUG(); + } + created = !err; + if (!err) + err = epilog(dir, btop, wh_dentry, dentry); + + /* revert */ + if (unlikely(created && err && d_is_positive(a->h_path.dentry))) { + /* no delegation since it is just created */ + rerr = vfsub_unlink(h_dir, &a->h_path, /*delegated*/NULL, + /*force*/0); + if (rerr) { + AuIOErr("%pd revert failure(%d, %d)\n", + dentry, err, rerr); + err = -EIO; + } + au_dtime_revert(&a->dt); + } + + if (!err && try_aopen && !h_dir->i_op->atomic_open) + *arg->u.c.aopen->opened |= FILE_CREATED; + + au_unpin(&a->pin); + dput(wh_dentry); + +out_parent: + if (!try_aopen) + di_write_unlock(parent); +out_unlock: + if (unlikely(err)) { + au_update_dbtop(dentry); + d_drop(dentry); + } + if (!try_aopen) + aufs_read_unlock(dentry, AuLock_DW); +out_free: + kfree(a); +out: + return err; +} + +int aufs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, + dev_t dev) +{ + struct simple_arg arg = { + .type = Mknod, + .u.m = { + .mode = mode, + .dev = dev + } + }; + return add_simple(dir, dentry, &arg); +} + +int aufs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) +{ + struct simple_arg arg = { + .type = Symlink, + .u.s.symname = symname + }; + return add_simple(dir, dentry, &arg); +} + +int aufs_create(struct inode *dir, struct dentry *dentry, umode_t mode, + bool want_excl) +{ + struct simple_arg arg = { + .type = Creat, + .u.c = { + .mode = mode, + .want_excl = want_excl + } + }; + return add_simple(dir, dentry, &arg); +} + +int au_aopen_or_create(struct inode *dir, struct dentry *dentry, + struct vfsub_aopen_args *aopen_args) +{ + struct simple_arg arg = { + .type = Creat, + .u.c = { + .mode = aopen_args->create_mode, + .want_excl = aopen_args->open_flag & O_EXCL, + .try_aopen = true, + .aopen = aopen_args + } + }; + return add_simple(dir, dentry, &arg); +} + +int aufs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) +{ + int err; + aufs_bindex_t bindex; + struct super_block *sb; + struct dentry *parent, *h_parent, *h_dentry; + struct inode *h_dir, *inode; + struct vfsmount *h_mnt; + struct au_wr_dir_args wr_dir_args = { + .force_btgt = -1, + .flags = AuWrDir_TMPFILE + }; + + /* copy-up may happen */ + inode_lock(dir); + + sb = dir->i_sb; + err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM); + if (unlikely(err)) + goto out; + + err = au_di_init(dentry); + if (unlikely(err)) + goto out_si; + + err = -EBUSY; + parent = d_find_any_alias(dir); + AuDebugOn(!parent); + di_write_lock_parent(parent); + if (unlikely(d_inode(parent) != dir)) + goto out_parent; + + err = au_digen_test(parent, au_sigen(sb)); + if (unlikely(err)) + goto out_parent; + + bindex = au_dbtop(parent); + au_set_dbtop(dentry, bindex); + au_set_dbbot(dentry, bindex); + err = au_wr_dir(dentry, /*src_dentry*/NULL, &wr_dir_args); + bindex = err; + if (unlikely(err < 0)) + goto out_parent; + + err = -EOPNOTSUPP; + h_dir = au_h_iptr(dir, bindex); + if (unlikely(!h_dir->i_op->tmpfile)) + goto out_parent; + + h_mnt = au_sbr_mnt(sb, bindex); + err = vfsub_mnt_want_write(h_mnt); + if (unlikely(err)) + goto out_parent; + + h_parent = au_h_dptr(parent, bindex); + h_dentry = vfs_tmpfile(h_parent, mode, /*open_flag*/0); + if (IS_ERR(h_dentry)) { + err = PTR_ERR(h_dentry); + goto out_mnt; + } + + au_set_dbtop(dentry, bindex); + au_set_dbbot(dentry, bindex); + au_set_h_dptr(dentry, bindex, dget(h_dentry)); + inode = au_new_inode(dentry, /*must_new*/1); + if (IS_ERR(inode)) { + err = PTR_ERR(inode); + au_set_h_dptr(dentry, bindex, NULL); + au_set_dbtop(dentry, -1); + au_set_dbbot(dentry, -1); + } else { + if (!inode->i_nlink) + set_nlink(inode, 1); + d_tmpfile(dentry, inode); + au_di(dentry)->di_tmpfile = 1; + + /* update without i_mutex */ + if (au_ibtop(dir) == au_dbtop(dentry)) + au_cpup_attr_timesizes(dir); + } + dput(h_dentry); + +out_mnt: + vfsub_mnt_drop_write(h_mnt); +out_parent: + di_write_unlock(parent); + dput(parent); + di_write_unlock(dentry); + if (unlikely(err)) { + au_di_fin(dentry); + dentry->d_fsdata = NULL; + } +out_si: + si_read_unlock(sb); +out: + inode_unlock(dir); + return err; +} + +/* ---------------------------------------------------------------------- */ + +struct au_link_args { + aufs_bindex_t bdst, bsrc; + struct au_pin pin; + struct path h_path; + struct dentry *src_parent, *parent; +}; + +static int au_cpup_before_link(struct dentry *src_dentry, + struct au_link_args *a) +{ + int err; + struct dentry *h_src_dentry; + struct au_cp_generic cpg = { + .dentry = src_dentry, + .bdst = a->bdst, + .bsrc = a->bsrc, + .len = -1, + .pin = &a->pin, + .flags = AuCpup_DTIME | AuCpup_HOPEN /* | AuCpup_KEEPLINO */ + }; + + di_read_lock_parent(a->src_parent, AuLock_IR); + err = au_test_and_cpup_dirs(src_dentry, a->bdst); + if (unlikely(err)) + goto out; + + h_src_dentry = au_h_dptr(src_dentry, a->bsrc); + err = au_pin(&a->pin, src_dentry, a->bdst, + au_opt_udba(src_dentry->d_sb), + AuPin_DI_LOCKED | AuPin_MNT_WRITE); + if (unlikely(err)) + goto out; + + err = au_sio_cpup_simple(&cpg); + au_unpin(&a->pin); + +out: + di_read_unlock(a->src_parent, AuLock_IR); + return err; +} + +static int au_cpup_or_link(struct dentry *src_dentry, struct dentry *dentry, + struct au_link_args *a) +{ + int err; + unsigned char plink; + aufs_bindex_t bbot; + struct dentry *h_src_dentry; + struct inode *h_inode, *inode, *delegated; + struct super_block *sb; + struct file *h_file; + + plink = 0; + h_inode = NULL; + sb = src_dentry->d_sb; + inode = d_inode(src_dentry); + if (au_ibtop(inode) <= a->bdst) + h_inode = au_h_iptr(inode, a->bdst); + if (!h_inode || !h_inode->i_nlink) { + /* copyup src_dentry as the name of dentry. */ + bbot = au_dbbot(dentry); + if (bbot < a->bsrc) + au_set_dbbot(dentry, a->bsrc); + au_set_h_dptr(dentry, a->bsrc, + dget(au_h_dptr(src_dentry, a->bsrc))); + dget(a->h_path.dentry); + au_set_h_dptr(dentry, a->bdst, NULL); + AuDbg("temporary d_inode...\n"); + spin_lock(&dentry->d_lock); + dentry->d_inode = d_inode(src_dentry); /* tmp */ + spin_unlock(&dentry->d_lock); + h_file = au_h_open_pre(dentry, a->bsrc, /*force_wr*/0); + if (IS_ERR(h_file)) + err = PTR_ERR(h_file); + else { + struct au_cp_generic cpg = { + .dentry = dentry, + .bdst = a->bdst, + .bsrc = -1, + .len = -1, + .pin = &a->pin, + .flags = AuCpup_KEEPLINO + }; + err = au_sio_cpup_simple(&cpg); + au_h_open_post(dentry, a->bsrc, h_file); + if (!err) { + dput(a->h_path.dentry); + a->h_path.dentry = au_h_dptr(dentry, a->bdst); + } else + au_set_h_dptr(dentry, a->bdst, + a->h_path.dentry); + } + spin_lock(&dentry->d_lock); + dentry->d_inode = NULL; /* restore */ + spin_unlock(&dentry->d_lock); + AuDbg("temporary d_inode...done\n"); + au_set_h_dptr(dentry, a->bsrc, NULL); + au_set_dbbot(dentry, bbot); + } else { + /* the inode of src_dentry already exists on a.bdst branch */ + h_src_dentry = d_find_alias(h_inode); + if (!h_src_dentry && au_plink_test(inode)) { + plink = 1; + h_src_dentry = au_plink_lkup(inode, a->bdst); + err = PTR_ERR(h_src_dentry); + if (IS_ERR(h_src_dentry)) + goto out; + + if (unlikely(d_is_negative(h_src_dentry))) { + dput(h_src_dentry); + h_src_dentry = NULL; + } + + } + if (h_src_dentry) { + delegated = NULL; + err = vfsub_link(h_src_dentry, au_pinned_h_dir(&a->pin), + &a->h_path, &delegated); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal link\n"); + iput(delegated); + } + dput(h_src_dentry); + } else { + AuIOErr("no dentry found for hi%lu on b%d\n", + h_inode->i_ino, a->bdst); + err = -EIO; + } + } + + if (!err && !plink) + au_plink_append(inode, a->bdst, a->h_path.dentry); + +out: + AuTraceErr(err); + return err; +} + +int aufs_link(struct dentry *src_dentry, struct inode *dir, + struct dentry *dentry) +{ + int err, rerr; + struct au_dtime dt; + struct au_link_args *a; + struct dentry *wh_dentry, *h_src_dentry; + struct inode *inode, *delegated; + struct super_block *sb; + struct au_wr_dir_args wr_dir_args = { + /* .force_btgt = -1, */ + .flags = AuWrDir_ADD_ENTRY + }; + + IMustLock(dir); + inode = d_inode(src_dentry); + IMustLock(inode); + + err = -ENOMEM; + a = kzalloc(sizeof(*a), GFP_NOFS); + if (unlikely(!a)) + goto out; + + a->parent = dentry->d_parent; /* dir inode is locked */ + err = aufs_read_and_write_lock2(dentry, src_dentry, + AuLock_NOPLM | AuLock_GEN); + if (unlikely(err)) + goto out_kfree; + err = au_d_linkable(src_dentry); + if (unlikely(err)) + goto out_unlock; + err = au_d_may_add(dentry); + if (unlikely(err)) + goto out_unlock; + + a->src_parent = dget_parent(src_dentry); + wr_dir_args.force_btgt = au_ibtop(inode); + + di_write_lock_parent(a->parent); + wr_dir_args.force_btgt = au_wbr(dentry, wr_dir_args.force_btgt); + wh_dentry = lock_hdir_lkup_wh(dentry, &dt, src_dentry, &a->pin, + &wr_dir_args); + err = PTR_ERR(wh_dentry); + if (IS_ERR(wh_dentry)) + goto out_parent; + + err = 0; + sb = dentry->d_sb; + a->bdst = au_dbtop(dentry); + a->h_path.dentry = au_h_dptr(dentry, a->bdst); + a->h_path.mnt = au_sbr_mnt(sb, a->bdst); + a->bsrc = au_ibtop(inode); + h_src_dentry = au_h_d_alias(src_dentry, a->bsrc); + if (!h_src_dentry && au_di(src_dentry)->di_tmpfile) + h_src_dentry = dget(au_hi_wh(inode, a->bsrc)); + if (!h_src_dentry) { + a->bsrc = au_dbtop(src_dentry); + h_src_dentry = au_h_d_alias(src_dentry, a->bsrc); + AuDebugOn(!h_src_dentry); + } else if (IS_ERR(h_src_dentry)) { + err = PTR_ERR(h_src_dentry); + goto out_parent; + } + + /* + * aufs doesn't touch the credential so + * security_dentry_create_files_as() is unnecrssary. + */ + if (au_opt_test(au_mntflags(sb), PLINK)) { + if (a->bdst < a->bsrc + /* && h_src_dentry->d_sb != a->h_path.dentry->d_sb */) + err = au_cpup_or_link(src_dentry, dentry, a); + else { + delegated = NULL; + err = vfsub_link(h_src_dentry, au_pinned_h_dir(&a->pin), + &a->h_path, &delegated); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal link\n"); + iput(delegated); + } + } + dput(h_src_dentry); + } else { + /* + * copyup src_dentry to the branch we process, + * and then link(2) to it. + */ + dput(h_src_dentry); + if (a->bdst < a->bsrc + /* && h_src_dentry->d_sb != a->h_path.dentry->d_sb */) { + au_unpin(&a->pin); + di_write_unlock(a->parent); + err = au_cpup_before_link(src_dentry, a); + di_write_lock_parent(a->parent); + if (!err) + err = au_pin(&a->pin, dentry, a->bdst, + au_opt_udba(sb), + AuPin_DI_LOCKED | AuPin_MNT_WRITE); + if (unlikely(err)) + goto out_wh; + } + if (!err) { + h_src_dentry = au_h_dptr(src_dentry, a->bdst); + err = -ENOENT; + if (h_src_dentry && d_is_positive(h_src_dentry)) { + delegated = NULL; + err = vfsub_link(h_src_dentry, + au_pinned_h_dir(&a->pin), + &a->h_path, &delegated); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry" + " for NFSv4 delegation" + " for an internal link\n"); + iput(delegated); + } + } + } + } + if (unlikely(err)) + goto out_unpin; + + if (wh_dentry) { + a->h_path.dentry = wh_dentry; + err = au_wh_unlink_dentry(au_pinned_h_dir(&a->pin), &a->h_path, + dentry); + if (unlikely(err)) + goto out_revert; + } + + au_dir_ts(dir, a->bdst); + dir->i_version++; + inc_nlink(inode); + inode->i_ctime = dir->i_ctime; + d_instantiate(dentry, au_igrab(inode)); + if (d_unhashed(a->h_path.dentry)) + /* some filesystem calls d_drop() */ + d_drop(dentry); + /* some filesystems consume an inode even hardlink */ + au_fhsm_wrote(sb, a->bdst, /*force*/0); + goto out_unpin; /* success */ + +out_revert: + /* no delegation since it is just created */ + rerr = vfsub_unlink(au_pinned_h_dir(&a->pin), &a->h_path, + /*delegated*/NULL, /*force*/0); + if (unlikely(rerr)) { + AuIOErr("%pd reverting failed(%d, %d)\n", dentry, err, rerr); + err = -EIO; + } + au_dtime_revert(&dt); +out_unpin: + au_unpin(&a->pin); +out_wh: + dput(wh_dentry); +out_parent: + di_write_unlock(a->parent); + dput(a->src_parent); +out_unlock: + if (unlikely(err)) { + au_update_dbtop(dentry); + d_drop(dentry); + } + aufs_read_and_write_unlock2(dentry, src_dentry); +out_kfree: + kfree(a); +out: + AuTraceErr(err); + return err; +} + +int aufs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) +{ + int err, rerr; + aufs_bindex_t bindex; + unsigned char diropq; + struct path h_path; + struct dentry *wh_dentry, *parent, *opq_dentry; + struct inode *h_inode; + struct super_block *sb; + struct { + struct au_pin pin; + struct au_dtime dt; + } *a; /* reduce the stack usage */ + struct au_wr_dir_args wr_dir_args = { + .force_btgt = -1, + .flags = AuWrDir_ADD_ENTRY | AuWrDir_ISDIR + }; + + IMustLock(dir); + + err = -ENOMEM; + a = kmalloc(sizeof(*a), GFP_NOFS); + if (unlikely(!a)) + goto out; + + err = aufs_read_lock(dentry, AuLock_DW | AuLock_GEN); + if (unlikely(err)) + goto out_free; + err = au_d_may_add(dentry); + if (unlikely(err)) + goto out_unlock; + + parent = dentry->d_parent; /* dir inode is locked */ + di_write_lock_parent(parent); + wh_dentry = lock_hdir_lkup_wh(dentry, &a->dt, /*src_dentry*/NULL, + &a->pin, &wr_dir_args); + err = PTR_ERR(wh_dentry); + if (IS_ERR(wh_dentry)) + goto out_parent; + + sb = dentry->d_sb; + bindex = au_dbtop(dentry); + h_path.dentry = au_h_dptr(dentry, bindex); + h_path.mnt = au_sbr_mnt(sb, bindex); + err = vfsub_mkdir(au_pinned_h_dir(&a->pin), &h_path, mode); + if (unlikely(err)) + goto out_unpin; + + /* make the dir opaque */ + diropq = 0; + h_inode = d_inode(h_path.dentry); + if (wh_dentry + || au_opt_test(au_mntflags(sb), ALWAYS_DIROPQ)) { + inode_lock_nested(h_inode, AuLsc_I_CHILD); + opq_dentry = au_diropq_create(dentry, bindex); + inode_unlock(h_inode); + err = PTR_ERR(opq_dentry); + if (IS_ERR(opq_dentry)) + goto out_dir; + dput(opq_dentry); + diropq = 1; + } + + err = epilog(dir, bindex, wh_dentry, dentry); + if (!err) { + inc_nlink(dir); + goto out_unpin; /* success */ + } + + /* revert */ + if (diropq) { + AuLabel(revert opq); + inode_lock_nested(h_inode, AuLsc_I_CHILD); + rerr = au_diropq_remove(dentry, bindex); + inode_unlock(h_inode); + if (rerr) { + AuIOErr("%pd reverting diropq failed(%d, %d)\n", + dentry, err, rerr); + err = -EIO; + } + } + +out_dir: + AuLabel(revert dir); + rerr = vfsub_rmdir(au_pinned_h_dir(&a->pin), &h_path); + if (rerr) { + AuIOErr("%pd reverting dir failed(%d, %d)\n", + dentry, err, rerr); + err = -EIO; + } + au_dtime_revert(&a->dt); +out_unpin: + au_unpin(&a->pin); + dput(wh_dentry); +out_parent: + di_write_unlock(parent); +out_unlock: + if (unlikely(err)) { + au_update_dbtop(dentry); + d_drop(dentry); + } + aufs_read_unlock(dentry, AuLock_DW); +out_free: + kfree(a); +out: + return err; +} diff --git a/include/fs/aufs/i_op_del.c b/include/fs/aufs/i_op_del.c new file mode 100644 index 00000000000..1e9162a24f6 --- /dev/null +++ b/include/fs/aufs/i_op_del.c @@ -0,0 +1,511 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * inode operations (del entry) + */ + +#include "aufs.h" + +/* + * decide if a new whiteout for @dentry is necessary or not. + * when it is necessary, prepare the parent dir for the upper branch whose + * branch index is @bcpup for creation. the actual creation of the whiteout will + * be done by caller. + * return value: + * 0: wh is unnecessary + * plus: wh is necessary + * minus: error + */ +int au_wr_dir_need_wh(struct dentry *dentry, int isdir, aufs_bindex_t *bcpup) +{ + int need_wh, err; + aufs_bindex_t btop; + struct super_block *sb; + + sb = dentry->d_sb; + btop = au_dbtop(dentry); + if (*bcpup < 0) { + *bcpup = btop; + if (au_test_ro(sb, btop, d_inode(dentry))) { + err = AuWbrCopyup(au_sbi(sb), dentry); + *bcpup = err; + if (unlikely(err < 0)) + goto out; + } + } else + AuDebugOn(btop < *bcpup + || au_test_ro(sb, *bcpup, d_inode(dentry))); + AuDbg("bcpup %d, btop %d\n", *bcpup, btop); + + if (*bcpup != btop) { + err = au_cpup_dirs(dentry, *bcpup); + if (unlikely(err)) + goto out; + need_wh = 1; + } else { + struct au_dinfo *dinfo, *tmp; + + need_wh = -ENOMEM; + dinfo = au_di(dentry); + tmp = au_di_alloc(sb, AuLsc_DI_TMP); + if (tmp) { + au_di_cp(tmp, dinfo); + au_di_swap(tmp, dinfo); + /* returns the number of positive dentries */ + need_wh = au_lkup_dentry(dentry, btop + 1, + /* AuLkup_IGNORE_PERM */ 0); + au_di_swap(tmp, dinfo); + au_rw_write_unlock(&tmp->di_rwsem); + au_di_free(tmp); + } + } + AuDbg("need_wh %d\n", need_wh); + err = need_wh; + +out: + return err; +} + +/* + * simple tests for the del-entry operations. + * following the checks in vfs, plus the parent-child relationship. + */ +int au_may_del(struct dentry *dentry, aufs_bindex_t bindex, + struct dentry *h_parent, int isdir) +{ + int err; + umode_t h_mode; + struct dentry *h_dentry, *h_latest; + struct inode *h_inode; + + h_dentry = au_h_dptr(dentry, bindex); + if (d_really_is_positive(dentry)) { + err = -ENOENT; + if (unlikely(d_is_negative(h_dentry))) + goto out; + h_inode = d_inode(h_dentry); + if (unlikely(!h_inode->i_nlink)) + goto out; + + h_mode = h_inode->i_mode; + if (!isdir) { + err = -EISDIR; + if (unlikely(S_ISDIR(h_mode))) + goto out; + } else if (unlikely(!S_ISDIR(h_mode))) { + err = -ENOTDIR; + goto out; + } + } else { + /* rename(2) case */ + err = -EIO; + if (unlikely(d_is_positive(h_dentry))) + goto out; + } + + err = -ENOENT; + /* expected parent dir is locked */ + if (unlikely(h_parent != h_dentry->d_parent)) + goto out; + err = 0; + + /* + * rmdir a dir may break the consistency on some filesystem. + * let's try heavy test. + */ + err = -EACCES; + if (unlikely(!au_opt_test(au_mntflags(dentry->d_sb), DIRPERM1) + && au_test_h_perm(d_inode(h_parent), + MAY_EXEC | MAY_WRITE))) + goto out; + + h_latest = au_sio_lkup_one(&dentry->d_name, h_parent); + err = -EIO; + if (IS_ERR(h_latest)) + goto out; + if (h_latest == h_dentry) + err = 0; + dput(h_latest); + +out: + return err; +} + +/* + * decide the branch where we operate for @dentry. the branch index will be set + * @rbcpup. after diciding it, 'pin' it and store the timestamps of the parent + * dir for reverting. + * when a new whiteout is necessary, create it. + */ +static struct dentry* +lock_hdir_create_wh(struct dentry *dentry, int isdir, aufs_bindex_t *rbcpup, + struct au_dtime *dt, struct au_pin *pin) +{ + struct dentry *wh_dentry; + struct super_block *sb; + struct path h_path; + int err, need_wh; + unsigned int udba; + aufs_bindex_t bcpup; + + need_wh = au_wr_dir_need_wh(dentry, isdir, rbcpup); + wh_dentry = ERR_PTR(need_wh); + if (unlikely(need_wh < 0)) + goto out; + + sb = dentry->d_sb; + udba = au_opt_udba(sb); + bcpup = *rbcpup; + err = au_pin(pin, dentry, bcpup, udba, + AuPin_DI_LOCKED | AuPin_MNT_WRITE); + wh_dentry = ERR_PTR(err); + if (unlikely(err)) + goto out; + + h_path.dentry = au_pinned_h_parent(pin); + if (udba != AuOpt_UDBA_NONE + && au_dbtop(dentry) == bcpup) { + err = au_may_del(dentry, bcpup, h_path.dentry, isdir); + wh_dentry = ERR_PTR(err); + if (unlikely(err)) + goto out_unpin; + } + + h_path.mnt = au_sbr_mnt(sb, bcpup); + au_dtime_store(dt, au_pinned_parent(pin), &h_path); + wh_dentry = NULL; + if (!need_wh) + goto out; /* success, no need to create whiteout */ + + wh_dentry = au_wh_create(dentry, bcpup, h_path.dentry); + if (IS_ERR(wh_dentry)) + goto out_unpin; + + /* returns with the parent is locked and wh_dentry is dget-ed */ + goto out; /* success */ + +out_unpin: + au_unpin(pin); +out: + return wh_dentry; +} + +/* + * when removing a dir, rename it to a unique temporary whiteout-ed name first + * in order to be revertible and save time for removing many child whiteouts + * under the dir. + * returns 1 when there are too many child whiteout and caller should remove + * them asynchronously. returns 0 when the number of children is enough small to + * remove now or the branch fs is a remote fs. + * otherwise return an error. + */ +static int renwh_and_rmdir(struct dentry *dentry, aufs_bindex_t bindex, + struct au_nhash *whlist, struct inode *dir) +{ + int rmdir_later, err, dirwh; + struct dentry *h_dentry; + struct super_block *sb; + struct inode *inode; + + sb = dentry->d_sb; + SiMustAnyLock(sb); + h_dentry = au_h_dptr(dentry, bindex); + err = au_whtmp_ren(h_dentry, au_sbr(sb, bindex)); + if (unlikely(err)) + goto out; + + /* stop monitoring */ + inode = d_inode(dentry); + au_hn_free(au_hi(inode, bindex)); + + if (!au_test_fs_remote(h_dentry->d_sb)) { + dirwh = au_sbi(sb)->si_dirwh; + rmdir_later = (dirwh <= 1); + if (!rmdir_later) + rmdir_later = au_nhash_test_longer_wh(whlist, bindex, + dirwh); + if (rmdir_later) + return rmdir_later; + } + + err = au_whtmp_rmdir(dir, bindex, h_dentry, whlist); + if (unlikely(err)) { + AuIOErr("rmdir %pd, b%d failed, %d. ignored\n", + h_dentry, bindex, err); + err = 0; + } + +out: + AuTraceErr(err); + return err; +} + +/* + * final procedure for deleting a entry. + * maintain dentry and iattr. + */ +static void epilog(struct inode *dir, struct dentry *dentry, + aufs_bindex_t bindex) +{ + struct inode *inode; + + inode = d_inode(dentry); + d_drop(dentry); + inode->i_ctime = dir->i_ctime; + + au_dir_ts(dir, bindex); + dir->i_version++; +} + +/* + * when an error happened, remove the created whiteout and revert everything. + */ +static int do_revert(int err, struct inode *dir, aufs_bindex_t bindex, + aufs_bindex_t bwh, struct dentry *wh_dentry, + struct dentry *dentry, struct au_dtime *dt) +{ + int rerr; + struct path h_path = { + .dentry = wh_dentry, + .mnt = au_sbr_mnt(dir->i_sb, bindex) + }; + + rerr = au_wh_unlink_dentry(au_h_iptr(dir, bindex), &h_path, dentry); + if (!rerr) { + au_set_dbwh(dentry, bwh); + au_dtime_revert(dt); + return 0; + } + + AuIOErr("%pd reverting whiteout failed(%d, %d)\n", dentry, err, rerr); + return -EIO; +} + +/* ---------------------------------------------------------------------- */ + +int aufs_unlink(struct inode *dir, struct dentry *dentry) +{ + int err; + aufs_bindex_t bwh, bindex, btop; + struct inode *inode, *h_dir, *delegated; + struct dentry *parent, *wh_dentry; + /* to reuduce stack size */ + struct { + struct au_dtime dt; + struct au_pin pin; + struct path h_path; + } *a; + + IMustLock(dir); + + err = -ENOMEM; + a = kmalloc(sizeof(*a), GFP_NOFS); + if (unlikely(!a)) + goto out; + + err = aufs_read_lock(dentry, AuLock_DW | AuLock_GEN); + if (unlikely(err)) + goto out_free; + err = au_d_hashed_positive(dentry); + if (unlikely(err)) + goto out_unlock; + inode = d_inode(dentry); + IMustLock(inode); + err = -EISDIR; + if (unlikely(d_is_dir(dentry))) + goto out_unlock; /* possible? */ + + btop = au_dbtop(dentry); + bwh = au_dbwh(dentry); + bindex = -1; + parent = dentry->d_parent; /* dir inode is locked */ + di_write_lock_parent(parent); + wh_dentry = lock_hdir_create_wh(dentry, /*isdir*/0, &bindex, &a->dt, + &a->pin); + err = PTR_ERR(wh_dentry); + if (IS_ERR(wh_dentry)) + goto out_parent; + + a->h_path.mnt = au_sbr_mnt(dentry->d_sb, btop); + a->h_path.dentry = au_h_dptr(dentry, btop); + dget(a->h_path.dentry); + if (bindex == btop) { + h_dir = au_pinned_h_dir(&a->pin); + delegated = NULL; + err = vfsub_unlink(h_dir, &a->h_path, &delegated, /*force*/0); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal unlink\n"); + iput(delegated); + } + } else { + /* dir inode is locked */ + h_dir = d_inode(wh_dentry->d_parent); + IMustLock(h_dir); + err = 0; + } + + if (!err) { + vfsub_drop_nlink(inode); + epilog(dir, dentry, bindex); + + /* update target timestamps */ + if (bindex == btop) { + vfsub_update_h_iattr(&a->h_path, /*did*/NULL); + /*ignore*/ + inode->i_ctime = d_inode(a->h_path.dentry)->i_ctime; + } else + /* todo: this timestamp may be reverted later */ + inode->i_ctime = h_dir->i_ctime; + goto out_unpin; /* success */ + } + + /* revert */ + if (wh_dentry) { + int rerr; + + rerr = do_revert(err, dir, bindex, bwh, wh_dentry, dentry, + &a->dt); + if (rerr) + err = rerr; + } + +out_unpin: + au_unpin(&a->pin); + dput(wh_dentry); + dput(a->h_path.dentry); +out_parent: + di_write_unlock(parent); +out_unlock: + aufs_read_unlock(dentry, AuLock_DW); +out_free: + kfree(a); +out: + return err; +} + +int aufs_rmdir(struct inode *dir, struct dentry *dentry) +{ + int err, rmdir_later; + aufs_bindex_t bwh, bindex, btop; + struct inode *inode; + struct dentry *parent, *wh_dentry, *h_dentry; + struct au_whtmp_rmdir *args; + /* to reuduce stack size */ + struct { + struct au_dtime dt; + struct au_pin pin; + } *a; + + IMustLock(dir); + + err = -ENOMEM; + a = kmalloc(sizeof(*a), GFP_NOFS); + if (unlikely(!a)) + goto out; + + err = aufs_read_lock(dentry, AuLock_DW | AuLock_FLUSH | AuLock_GEN); + if (unlikely(err)) + goto out_free; + err = au_alive_dir(dentry); + if (unlikely(err)) + goto out_unlock; + inode = d_inode(dentry); + IMustLock(inode); + err = -ENOTDIR; + if (unlikely(!d_is_dir(dentry))) + goto out_unlock; /* possible? */ + + err = -ENOMEM; + args = au_whtmp_rmdir_alloc(dir->i_sb, GFP_NOFS); + if (unlikely(!args)) + goto out_unlock; + + parent = dentry->d_parent; /* dir inode is locked */ + di_write_lock_parent(parent); + err = au_test_empty(dentry, &args->whlist); + if (unlikely(err)) + goto out_parent; + + btop = au_dbtop(dentry); + bwh = au_dbwh(dentry); + bindex = -1; + wh_dentry = lock_hdir_create_wh(dentry, /*isdir*/1, &bindex, &a->dt, + &a->pin); + err = PTR_ERR(wh_dentry); + if (IS_ERR(wh_dentry)) + goto out_parent; + + h_dentry = au_h_dptr(dentry, btop); + dget(h_dentry); + rmdir_later = 0; + if (bindex == btop) { + err = renwh_and_rmdir(dentry, btop, &args->whlist, dir); + if (err > 0) { + rmdir_later = err; + err = 0; + } + } else { + /* stop monitoring */ + au_hn_free(au_hi(inode, btop)); + + /* dir inode is locked */ + IMustLock(d_inode(wh_dentry->d_parent)); + err = 0; + } + + if (!err) { + vfsub_dead_dir(inode); + au_set_dbdiropq(dentry, -1); + epilog(dir, dentry, bindex); + + if (rmdir_later) { + au_whtmp_kick_rmdir(dir, btop, h_dentry, args); + args = NULL; + } + + goto out_unpin; /* success */ + } + + /* revert */ + AuLabel(revert); + if (wh_dentry) { + int rerr; + + rerr = do_revert(err, dir, bindex, bwh, wh_dentry, dentry, + &a->dt); + if (rerr) + err = rerr; + } + +out_unpin: + au_unpin(&a->pin); + dput(wh_dentry); + dput(h_dentry); +out_parent: + di_write_unlock(parent); + if (args) + au_whtmp_rmdir_free(args); +out_unlock: + aufs_read_unlock(dentry, AuLock_DW); +out_free: + kfree(a); +out: + AuTraceErr(err); + return err; +} diff --git a/include/fs/aufs/i_op_ren.c b/include/fs/aufs/i_op_ren.c new file mode 100644 index 00000000000..9cf1d7e456c --- /dev/null +++ b/include/fs/aufs/i_op_ren.c @@ -0,0 +1,1246 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * inode operation (rename entry) + * todo: this is crazy monster + */ + +#include "aufs.h" + +enum { AuSRC, AuDST, AuSrcDst }; +enum { AuPARENT, AuCHILD, AuParentChild }; + +#define AuRen_ISDIR_SRC 1 +#define AuRen_ISDIR_DST (1 << 1) +#define AuRen_ISSAMEDIR (1 << 2) +#define AuRen_WHSRC (1 << 3) +#define AuRen_WHDST (1 << 4) +#define AuRen_MNT_WRITE (1 << 5) +#define AuRen_DT_DSTDIR (1 << 6) +#define AuRen_DIROPQ_SRC (1 << 7) +#define AuRen_DIROPQ_DST (1 << 8) +#define AuRen_DIRREN (1 << 9) +#define AuRen_DROPPED_SRC (1 << 10) +#define AuRen_DROPPED_DST (1 << 11) +#define au_ftest_ren(flags, name) ((flags) & AuRen_##name) +#define au_fset_ren(flags, name) \ + do { (flags) |= AuRen_##name; } while (0) +#define au_fclr_ren(flags, name) \ + do { (flags) &= ~AuRen_##name; } while (0) + +#ifndef CONFIG_AUFS_DIRREN +#undef AuRen_DIRREN +#define AuRen_DIRREN 0 +#endif + +struct au_ren_args { + struct { + struct dentry *dentry, *h_dentry, *parent, *h_parent, + *wh_dentry; + struct inode *dir, *inode; + struct au_hinode *hdir, *hinode; + struct au_dtime dt[AuParentChild]; + aufs_bindex_t btop, bdiropq; + } sd[AuSrcDst]; + +#define src_dentry sd[AuSRC].dentry +#define src_dir sd[AuSRC].dir +#define src_inode sd[AuSRC].inode +#define src_h_dentry sd[AuSRC].h_dentry +#define src_parent sd[AuSRC].parent +#define src_h_parent sd[AuSRC].h_parent +#define src_wh_dentry sd[AuSRC].wh_dentry +#define src_hdir sd[AuSRC].hdir +#define src_hinode sd[AuSRC].hinode +#define src_h_dir sd[AuSRC].hdir->hi_inode +#define src_dt sd[AuSRC].dt +#define src_btop sd[AuSRC].btop +#define src_bdiropq sd[AuSRC].bdiropq + +#define dst_dentry sd[AuDST].dentry +#define dst_dir sd[AuDST].dir +#define dst_inode sd[AuDST].inode +#define dst_h_dentry sd[AuDST].h_dentry +#define dst_parent sd[AuDST].parent +#define dst_h_parent sd[AuDST].h_parent +#define dst_wh_dentry sd[AuDST].wh_dentry +#define dst_hdir sd[AuDST].hdir +#define dst_hinode sd[AuDST].hinode +#define dst_h_dir sd[AuDST].hdir->hi_inode +#define dst_dt sd[AuDST].dt +#define dst_btop sd[AuDST].btop +#define dst_bdiropq sd[AuDST].bdiropq + + struct dentry *h_trap; + struct au_branch *br; + struct path h_path; + struct au_nhash whlist; + aufs_bindex_t btgt, src_bwh; + + struct { + unsigned short auren_flags; + unsigned char flags; /* syscall parameter */ + unsigned char exchange; + } __packed; + + struct au_whtmp_rmdir *thargs; + struct dentry *h_dst; + struct au_hinode *h_root; +}; + +/* ---------------------------------------------------------------------- */ + +/* + * functions for reverting. + * when an error happened in a single rename systemcall, we should revert + * everything as if nothing happened. + * we don't need to revert the copied-up/down the parent dir since they are + * harmless. + */ + +#define RevertFailure(fmt, ...) do { \ + AuIOErr("revert failure: " fmt " (%d, %d)\n", \ + ##__VA_ARGS__, err, rerr); \ + err = -EIO; \ +} while (0) + +static void au_ren_do_rev_diropq(int err, struct au_ren_args *a, int idx) +{ + int rerr; + struct dentry *d; +#define src_or_dst(member) a->sd[idx].member + + d = src_or_dst(dentry); /* {src,dst}_dentry */ + au_hn_inode_lock_nested(src_or_dst(hinode), AuLsc_I_CHILD); + rerr = au_diropq_remove(d, a->btgt); + au_hn_inode_unlock(src_or_dst(hinode)); + au_set_dbdiropq(d, src_or_dst(bdiropq)); + if (rerr) + RevertFailure("remove diropq %pd", d); + +#undef src_or_dst_ +} + +static void au_ren_rev_diropq(int err, struct au_ren_args *a) +{ + if (au_ftest_ren(a->auren_flags, DIROPQ_SRC)) + au_ren_do_rev_diropq(err, a, AuSRC); + if (au_ftest_ren(a->auren_flags, DIROPQ_DST)) + au_ren_do_rev_diropq(err, a, AuDST); +} + +static void au_ren_rev_rename(int err, struct au_ren_args *a) +{ + int rerr; + struct inode *delegated; + + a->h_path.dentry = vfsub_lkup_one(&a->src_dentry->d_name, + a->src_h_parent); + rerr = PTR_ERR(a->h_path.dentry); + if (IS_ERR(a->h_path.dentry)) { + RevertFailure("lkup one %pd", a->src_dentry); + return; + } + + delegated = NULL; + rerr = vfsub_rename(a->dst_h_dir, + au_h_dptr(a->src_dentry, a->btgt), + a->src_h_dir, &a->h_path, &delegated, a->flags); + if (unlikely(rerr == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal rename\n"); + iput(delegated); + } + d_drop(a->h_path.dentry); + dput(a->h_path.dentry); + /* au_set_h_dptr(a->src_dentry, a->btgt, NULL); */ + if (rerr) + RevertFailure("rename %pd", a->src_dentry); +} + +static void au_ren_rev_whtmp(int err, struct au_ren_args *a) +{ + int rerr; + struct inode *delegated; + + a->h_path.dentry = vfsub_lkup_one(&a->dst_dentry->d_name, + a->dst_h_parent); + rerr = PTR_ERR(a->h_path.dentry); + if (IS_ERR(a->h_path.dentry)) { + RevertFailure("lkup one %pd", a->dst_dentry); + return; + } + if (d_is_positive(a->h_path.dentry)) { + d_drop(a->h_path.dentry); + dput(a->h_path.dentry); + return; + } + + delegated = NULL; + rerr = vfsub_rename(a->dst_h_dir, a->h_dst, a->dst_h_dir, &a->h_path, + &delegated, a->flags); + if (unlikely(rerr == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal rename\n"); + iput(delegated); + } + d_drop(a->h_path.dentry); + dput(a->h_path.dentry); + if (!rerr) + au_set_h_dptr(a->dst_dentry, a->btgt, dget(a->h_dst)); + else + RevertFailure("rename %pd", a->h_dst); +} + +static void au_ren_rev_whsrc(int err, struct au_ren_args *a) +{ + int rerr; + + a->h_path.dentry = a->src_wh_dentry; + rerr = au_wh_unlink_dentry(a->src_h_dir, &a->h_path, a->src_dentry); + au_set_dbwh(a->src_dentry, a->src_bwh); + if (rerr) + RevertFailure("unlink %pd", a->src_wh_dentry); +} +#undef RevertFailure + +/* ---------------------------------------------------------------------- */ + +/* + * when we have to copyup the renaming entry, do it with the rename-target name + * in order to minimize the cost (the later actual rename is unnecessary). + * otherwise rename it on the target branch. + */ +static int au_ren_or_cpup(struct au_ren_args *a) +{ + int err; + struct dentry *d; + struct inode *delegated; + + d = a->src_dentry; + if (au_dbtop(d) == a->btgt) { + a->h_path.dentry = a->dst_h_dentry; + AuDebugOn(au_dbtop(d) != a->btgt); + delegated = NULL; + err = vfsub_rename(a->src_h_dir, au_h_dptr(d, a->btgt), + a->dst_h_dir, &a->h_path, &delegated, + a->flags); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal rename\n"); + iput(delegated); + } + } else + BUG(); + + if (!err && a->h_dst) + /* it will be set to dinfo later */ + dget(a->h_dst); + + return err; +} + +/* cf. aufs_rmdir() */ +static int au_ren_del_whtmp(struct au_ren_args *a) +{ + int err; + struct inode *dir; + + dir = a->dst_dir; + SiMustAnyLock(dir->i_sb); + if (!au_nhash_test_longer_wh(&a->whlist, a->btgt, + au_sbi(dir->i_sb)->si_dirwh) + || au_test_fs_remote(a->h_dst->d_sb)) { + err = au_whtmp_rmdir(dir, a->btgt, a->h_dst, &a->whlist); + if (unlikely(err)) + pr_warn("failed removing whtmp dir %pd (%d), " + "ignored.\n", a->h_dst, err); + } else { + au_nhash_wh_free(&a->thargs->whlist); + a->thargs->whlist = a->whlist; + a->whlist.nh_num = 0; + au_whtmp_kick_rmdir(dir, a->btgt, a->h_dst, a->thargs); + dput(a->h_dst); + a->thargs = NULL; + } + + return 0; +} + +/* make it 'opaque' dir. */ +static int au_ren_do_diropq(struct au_ren_args *a, int idx) +{ + int err; + struct dentry *d, *diropq; +#define src_or_dst(member) a->sd[idx].member + + err = 0; + d = src_or_dst(dentry); /* {src,dst}_dentry */ + src_or_dst(bdiropq) = au_dbdiropq(d); + src_or_dst(hinode) = au_hi(src_or_dst(inode), a->btgt); + au_hn_inode_lock_nested(src_or_dst(hinode), AuLsc_I_CHILD); + diropq = au_diropq_create(d, a->btgt); + au_hn_inode_unlock(src_or_dst(hinode)); + if (IS_ERR(diropq)) + err = PTR_ERR(diropq); + else + dput(diropq); + +#undef src_or_dst_ + return err; +} + +static int au_ren_diropq(struct au_ren_args *a) +{ + int err; + unsigned char always; + struct dentry *d; + + err = 0; + d = a->dst_dentry; /* already renamed on the branch */ + always = !!au_opt_test(au_mntflags(d->d_sb), ALWAYS_DIROPQ); + if (au_ftest_ren(a->auren_flags, ISDIR_SRC) + && !au_ftest_ren(a->auren_flags, DIRREN) + && a->btgt != au_dbdiropq(a->src_dentry) + && (a->dst_wh_dentry + || a->btgt <= au_dbdiropq(d) + /* hide the lower to keep xino */ + /* the lowers may not be a dir, but we hide them anyway */ + || a->btgt < au_dbbot(d) + || always)) { + AuDbg("here\n"); + err = au_ren_do_diropq(a, AuSRC); + if (unlikely(err)) + goto out; + au_fset_ren(a->auren_flags, DIROPQ_SRC); + } + if (!a->exchange) + goto out; /* success */ + + d = a->src_dentry; /* already renamed on the branch */ + if (au_ftest_ren(a->auren_flags, ISDIR_DST) + && a->btgt != au_dbdiropq(a->dst_dentry) + && (a->btgt < au_dbdiropq(d) + || a->btgt < au_dbbot(d) + || always)) { + AuDbgDentry(a->src_dentry); + AuDbgDentry(a->dst_dentry); + err = au_ren_do_diropq(a, AuDST); + if (unlikely(err)) + goto out_rev_src; + au_fset_ren(a->auren_flags, DIROPQ_DST); + } + goto out; /* success */ + +out_rev_src: + AuDbg("err %d, reverting src\n", err); + au_ren_rev_diropq(err, a); +out: + return err; +} + +static int do_rename(struct au_ren_args *a) +{ + int err; + struct dentry *d, *h_d; + + if (!a->exchange) { + /* prepare workqueue args for asynchronous rmdir */ + h_d = a->dst_h_dentry; + if (au_ftest_ren(a->auren_flags, ISDIR_DST) + /* && !au_ftest_ren(a->auren_flags, DIRREN) */ + && d_is_positive(h_d)) { + err = -ENOMEM; + a->thargs = au_whtmp_rmdir_alloc(a->src_dentry->d_sb, + GFP_NOFS); + if (unlikely(!a->thargs)) + goto out; + a->h_dst = dget(h_d); + } + + /* create whiteout for src_dentry */ + if (au_ftest_ren(a->auren_flags, WHSRC)) { + a->src_bwh = au_dbwh(a->src_dentry); + AuDebugOn(a->src_bwh >= 0); + a->src_wh_dentry = au_wh_create(a->src_dentry, a->btgt, + a->src_h_parent); + err = PTR_ERR(a->src_wh_dentry); + if (IS_ERR(a->src_wh_dentry)) + goto out_thargs; + } + + /* lookup whiteout for dentry */ + if (au_ftest_ren(a->auren_flags, WHDST)) { + h_d = au_wh_lkup(a->dst_h_parent, + &a->dst_dentry->d_name, a->br); + err = PTR_ERR(h_d); + if (IS_ERR(h_d)) + goto out_whsrc; + if (d_is_negative(h_d)) + dput(h_d); + else + a->dst_wh_dentry = h_d; + } + + /* rename dentry to tmpwh */ + if (a->thargs) { + err = au_whtmp_ren(a->dst_h_dentry, a->br); + if (unlikely(err)) + goto out_whdst; + + d = a->dst_dentry; + au_set_h_dptr(d, a->btgt, NULL); + err = au_lkup_neg(d, a->btgt, /*wh*/0); + if (unlikely(err)) + goto out_whtmp; + a->dst_h_dentry = au_h_dptr(d, a->btgt); + } + } + + BUG_ON(d_is_positive(a->dst_h_dentry) && a->src_btop != a->btgt); +#if 0 + BUG_ON(!au_ftest_ren(a->auren_flags, DIRREN) + && d_is_positive(a->dst_h_dentry) + && a->src_btop != a->btgt); +#endif + + /* rename by vfs_rename or cpup */ + err = au_ren_or_cpup(a); + if (unlikely(err)) + /* leave the copied-up one */ + goto out_whtmp; + + /* make dir opaque */ + err = au_ren_diropq(a); + if (unlikely(err)) + goto out_rename; + + /* update target timestamps */ + if (a->exchange) { + AuDebugOn(au_dbtop(a->dst_dentry) != a->btgt); + a->h_path.dentry = au_h_dptr(a->dst_dentry, a->btgt); + vfsub_update_h_iattr(&a->h_path, /*did*/NULL); /*ignore*/ + a->dst_inode->i_ctime = d_inode(a->h_path.dentry)->i_ctime; + } + AuDebugOn(au_dbtop(a->src_dentry) != a->btgt); + a->h_path.dentry = au_h_dptr(a->src_dentry, a->btgt); + vfsub_update_h_iattr(&a->h_path, /*did*/NULL); /*ignore*/ + a->src_inode->i_ctime = d_inode(a->h_path.dentry)->i_ctime; + + if (!a->exchange) { + /* remove whiteout for dentry */ + if (a->dst_wh_dentry) { + a->h_path.dentry = a->dst_wh_dentry; + err = au_wh_unlink_dentry(a->dst_h_dir, &a->h_path, + a->dst_dentry); + if (unlikely(err)) + goto out_diropq; + } + + /* remove whtmp */ + if (a->thargs) + au_ren_del_whtmp(a); /* ignore this error */ + + au_fhsm_wrote(a->src_dentry->d_sb, a->btgt, /*force*/0); + } + err = 0; + goto out_success; + +out_diropq: + au_ren_rev_diropq(err, a); +out_rename: + au_ren_rev_rename(err, a); + dput(a->h_dst); +out_whtmp: + if (a->thargs) + au_ren_rev_whtmp(err, a); +out_whdst: + dput(a->dst_wh_dentry); + a->dst_wh_dentry = NULL; +out_whsrc: + if (a->src_wh_dentry) + au_ren_rev_whsrc(err, a); +out_success: + dput(a->src_wh_dentry); + dput(a->dst_wh_dentry); +out_thargs: + if (a->thargs) { + dput(a->h_dst); + au_whtmp_rmdir_free(a->thargs); + a->thargs = NULL; + } +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* + * test if @dentry dir can be rename destination or not. + * success means, it is a logically empty dir. + */ +static int may_rename_dstdir(struct dentry *dentry, struct au_nhash *whlist) +{ + return au_test_empty(dentry, whlist); +} + +/* + * test if @a->src_dentry dir can be rename source or not. + * if it can, return 0. + * success means, + * - it is a logically empty dir. + * - or, it exists on writable branch and has no children including whiteouts + * on the lower branch unless DIRREN is on. + */ +static int may_rename_srcdir(struct au_ren_args *a) +{ + int err; + unsigned int rdhash; + aufs_bindex_t btop, btgt; + struct dentry *dentry; + struct super_block *sb; + struct au_sbinfo *sbinfo; + + dentry = a->src_dentry; + sb = dentry->d_sb; + sbinfo = au_sbi(sb); + if (au_opt_test(sbinfo->si_mntflags, DIRREN)) + au_fset_ren(a->auren_flags, DIRREN); + + btgt = a->btgt; + btop = au_dbtop(dentry); + if (btop != btgt) { + struct au_nhash whlist; + + SiMustAnyLock(sb); + rdhash = sbinfo->si_rdhash; + if (!rdhash) + rdhash = au_rdhash_est(au_dir_size(/*file*/NULL, + dentry)); + err = au_nhash_alloc(&whlist, rdhash, GFP_NOFS); + if (unlikely(err)) + goto out; + err = au_test_empty(dentry, &whlist); + au_nhash_wh_free(&whlist); + goto out; + } + + if (btop == au_dbtaildir(dentry)) + return 0; /* success */ + + err = au_test_empty_lower(dentry); + +out: + if (err == -ENOTEMPTY) { + if (au_ftest_ren(a->auren_flags, DIRREN)) { + err = 0; + } else { + AuWarn1("renaming dir who has child(ren) on multiple " + "branches, is not supported\n"); + err = -EXDEV; + } + } + return err; +} + +/* side effect: sets whlist and h_dentry */ +static int au_ren_may_dir(struct au_ren_args *a) +{ + int err; + unsigned int rdhash; + struct dentry *d; + + d = a->dst_dentry; + SiMustAnyLock(d->d_sb); + + err = 0; + if (au_ftest_ren(a->auren_flags, ISDIR_DST) && a->dst_inode) { + rdhash = au_sbi(d->d_sb)->si_rdhash; + if (!rdhash) + rdhash = au_rdhash_est(au_dir_size(/*file*/NULL, d)); + err = au_nhash_alloc(&a->whlist, rdhash, GFP_NOFS); + if (unlikely(err)) + goto out; + + if (!a->exchange) { + au_set_dbtop(d, a->dst_btop); + err = may_rename_dstdir(d, &a->whlist); + au_set_dbtop(d, a->btgt); + } else + err = may_rename_srcdir(a); + } + a->dst_h_dentry = au_h_dptr(d, au_dbtop(d)); + if (unlikely(err)) + goto out; + + d = a->src_dentry; + a->src_h_dentry = au_h_dptr(d, au_dbtop(d)); + if (au_ftest_ren(a->auren_flags, ISDIR_SRC)) { + err = may_rename_srcdir(a); + if (unlikely(err)) { + au_nhash_wh_free(&a->whlist); + a->whlist.nh_num = 0; + } + } +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* + * simple tests for rename. + * following the checks in vfs, plus the parent-child relationship. + */ +static int au_may_ren(struct au_ren_args *a) +{ + int err, isdir; + struct inode *h_inode; + + if (a->src_btop == a->btgt) { + err = au_may_del(a->src_dentry, a->btgt, a->src_h_parent, + au_ftest_ren(a->auren_flags, ISDIR_SRC)); + if (unlikely(err)) + goto out; + err = -EINVAL; + if (unlikely(a->src_h_dentry == a->h_trap)) + goto out; + } + + err = 0; + if (a->dst_btop != a->btgt) + goto out; + + err = -ENOTEMPTY; + if (unlikely(a->dst_h_dentry == a->h_trap)) + goto out; + + err = -EIO; + isdir = !!au_ftest_ren(a->auren_flags, ISDIR_DST); + if (d_really_is_negative(a->dst_dentry)) { + if (d_is_negative(a->dst_h_dentry)) + err = au_may_add(a->dst_dentry, a->btgt, + a->dst_h_parent, isdir); + } else { + if (unlikely(d_is_negative(a->dst_h_dentry))) + goto out; + h_inode = d_inode(a->dst_h_dentry); + if (h_inode->i_nlink) + err = au_may_del(a->dst_dentry, a->btgt, + a->dst_h_parent, isdir); + } + +out: + if (unlikely(err == -ENOENT || err == -EEXIST)) + err = -EIO; + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* + * locking order + * (VFS) + * - src_dir and dir by lock_rename() + * - inode if exitsts + * (aufs) + * - lock all + * + src_dentry and dentry by aufs_read_and_write_lock2() which calls, + * + si_read_lock + * + di_write_lock2_child() + * + di_write_lock_child() + * + ii_write_lock_child() + * + di_write_lock_child2() + * + ii_write_lock_child2() + * + src_parent and parent + * + di_write_lock_parent() + * + ii_write_lock_parent() + * + di_write_lock_parent2() + * + ii_write_lock_parent2() + * + lower src_dir and dir by vfsub_lock_rename() + * + verify the every relationships between child and parent. if any + * of them failed, unlock all and return -EBUSY. + */ +static void au_ren_unlock(struct au_ren_args *a) +{ + vfsub_unlock_rename(a->src_h_parent, a->src_hdir, + a->dst_h_parent, a->dst_hdir); + if (au_ftest_ren(a->auren_flags, DIRREN) + && a->h_root) + au_hn_inode_unlock(a->h_root); + if (au_ftest_ren(a->auren_flags, MNT_WRITE)) + vfsub_mnt_drop_write(au_br_mnt(a->br)); +} + +static int au_ren_lock(struct au_ren_args *a) +{ + int err; + unsigned int udba; + + err = 0; + a->src_h_parent = au_h_dptr(a->src_parent, a->btgt); + a->src_hdir = au_hi(a->src_dir, a->btgt); + a->dst_h_parent = au_h_dptr(a->dst_parent, a->btgt); + a->dst_hdir = au_hi(a->dst_dir, a->btgt); + + err = vfsub_mnt_want_write(au_br_mnt(a->br)); + if (unlikely(err)) + goto out; + au_fset_ren(a->auren_flags, MNT_WRITE); + if (au_ftest_ren(a->auren_flags, DIRREN)) { + struct dentry *root; + struct inode *dir; + + /* + * sbinfo is already locked, so this ii_read_lock is + * unnecessary. but our debugging feature checks it. + */ + root = a->src_inode->i_sb->s_root; + if (root != a->src_parent && root != a->dst_parent) { + dir = d_inode(root); + ii_read_lock_parent3(dir); + a->h_root = au_hi(dir, a->btgt); + ii_read_unlock(dir); + au_hn_inode_lock_nested(a->h_root, AuLsc_I_PARENT3); + } + } + a->h_trap = vfsub_lock_rename(a->src_h_parent, a->src_hdir, + a->dst_h_parent, a->dst_hdir); + udba = au_opt_udba(a->src_dentry->d_sb); + if (unlikely(a->src_hdir->hi_inode != d_inode(a->src_h_parent) + || a->dst_hdir->hi_inode != d_inode(a->dst_h_parent))) + err = au_busy_or_stale(); + if (!err && au_dbtop(a->src_dentry) == a->btgt) + err = au_h_verify(a->src_h_dentry, udba, + d_inode(a->src_h_parent), a->src_h_parent, + a->br); + if (!err && au_dbtop(a->dst_dentry) == a->btgt) + err = au_h_verify(a->dst_h_dentry, udba, + d_inode(a->dst_h_parent), a->dst_h_parent, + a->br); + if (!err) + goto out; /* success */ + + err = au_busy_or_stale(); + au_ren_unlock(a); + +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +static void au_ren_refresh_dir(struct au_ren_args *a) +{ + struct inode *dir; + + dir = a->dst_dir; + dir->i_version++; + if (au_ftest_ren(a->auren_flags, ISDIR_SRC)) { + /* is this updating defined in POSIX? */ + au_cpup_attr_timesizes(a->src_inode); + au_cpup_attr_nlink(dir, /*force*/1); + } + au_dir_ts(dir, a->btgt); + + if (a->exchange) { + dir = a->src_dir; + dir->i_version++; + if (au_ftest_ren(a->auren_flags, ISDIR_DST)) { + /* is this updating defined in POSIX? */ + au_cpup_attr_timesizes(a->dst_inode); + au_cpup_attr_nlink(dir, /*force*/1); + } + au_dir_ts(dir, a->btgt); + } + + if (au_ftest_ren(a->auren_flags, ISSAMEDIR)) + return; + + dir = a->src_dir; + dir->i_version++; + if (au_ftest_ren(a->auren_flags, ISDIR_SRC)) + au_cpup_attr_nlink(dir, /*force*/1); + au_dir_ts(dir, a->btgt); +} + +static void au_ren_refresh(struct au_ren_args *a) +{ + aufs_bindex_t bbot, bindex; + struct dentry *d, *h_d; + struct inode *i, *h_i; + struct super_block *sb; + + d = a->dst_dentry; + d_drop(d); + if (a->h_dst) + /* already dget-ed by au_ren_or_cpup() */ + au_set_h_dptr(d, a->btgt, a->h_dst); + + i = a->dst_inode; + if (i) { + if (!a->exchange) { + if (!au_ftest_ren(a->auren_flags, ISDIR_DST)) + vfsub_drop_nlink(i); + else { + vfsub_dead_dir(i); + au_cpup_attr_timesizes(i); + } + au_update_dbrange(d, /*do_put_zero*/1); + } else + au_cpup_attr_nlink(i, /*force*/1); + } else { + bbot = a->btgt; + for (bindex = au_dbtop(d); bindex < bbot; bindex++) + au_set_h_dptr(d, bindex, NULL); + bbot = au_dbbot(d); + for (bindex = a->btgt + 1; bindex <= bbot; bindex++) + au_set_h_dptr(d, bindex, NULL); + au_update_dbrange(d, /*do_put_zero*/0); + } + + if (a->exchange + || au_ftest_ren(a->auren_flags, DIRREN)) { + d_drop(a->src_dentry); + if (au_ftest_ren(a->auren_flags, DIRREN)) + au_set_dbwh(a->src_dentry, -1); + return; + } + + d = a->src_dentry; + au_set_dbwh(d, -1); + bbot = au_dbbot(d); + for (bindex = a->btgt + 1; bindex <= bbot; bindex++) { + h_d = au_h_dptr(d, bindex); + if (h_d) + au_set_h_dptr(d, bindex, NULL); + } + au_set_dbbot(d, a->btgt); + + sb = d->d_sb; + i = a->src_inode; + if (au_opt_test(au_mntflags(sb), PLINK) && au_plink_test(i)) + return; /* success */ + + bbot = au_ibbot(i); + for (bindex = a->btgt + 1; bindex <= bbot; bindex++) { + h_i = au_h_iptr(i, bindex); + if (h_i) { + au_xino_write(sb, bindex, h_i->i_ino, /*ino*/0); + /* ignore this error */ + au_set_h_iptr(i, bindex, NULL, 0); + } + } + au_set_ibbot(i, a->btgt); +} + +/* ---------------------------------------------------------------------- */ + +/* mainly for link(2) and rename(2) */ +int au_wbr(struct dentry *dentry, aufs_bindex_t btgt) +{ + aufs_bindex_t bdiropq, bwh; + struct dentry *parent; + struct au_branch *br; + + parent = dentry->d_parent; + IMustLock(d_inode(parent)); /* dir is locked */ + + bdiropq = au_dbdiropq(parent); + bwh = au_dbwh(dentry); + br = au_sbr(dentry->d_sb, btgt); + if (au_br_rdonly(br) + || (0 <= bdiropq && bdiropq < btgt) + || (0 <= bwh && bwh < btgt)) + btgt = -1; + + AuDbg("btgt %d\n", btgt); + return btgt; +} + +/* sets src_btop, dst_btop and btgt */ +static int au_ren_wbr(struct au_ren_args *a) +{ + int err; + struct au_wr_dir_args wr_dir_args = { + /* .force_btgt = -1, */ + .flags = AuWrDir_ADD_ENTRY + }; + + a->src_btop = au_dbtop(a->src_dentry); + a->dst_btop = au_dbtop(a->dst_dentry); + if (au_ftest_ren(a->auren_flags, ISDIR_SRC) + || au_ftest_ren(a->auren_flags, ISDIR_DST)) + au_fset_wrdir(wr_dir_args.flags, ISDIR); + wr_dir_args.force_btgt = a->src_btop; + if (a->dst_inode && a->dst_btop < a->src_btop) + wr_dir_args.force_btgt = a->dst_btop; + wr_dir_args.force_btgt = au_wbr(a->dst_dentry, wr_dir_args.force_btgt); + err = au_wr_dir(a->dst_dentry, a->src_dentry, &wr_dir_args); + a->btgt = err; + if (a->exchange) + au_update_dbtop(a->dst_dentry); + + return err; +} + +static void au_ren_dt(struct au_ren_args *a) +{ + a->h_path.dentry = a->src_h_parent; + au_dtime_store(a->src_dt + AuPARENT, a->src_parent, &a->h_path); + if (!au_ftest_ren(a->auren_flags, ISSAMEDIR)) { + a->h_path.dentry = a->dst_h_parent; + au_dtime_store(a->dst_dt + AuPARENT, a->dst_parent, &a->h_path); + } + + au_fclr_ren(a->auren_flags, DT_DSTDIR); + if (!au_ftest_ren(a->auren_flags, ISDIR_SRC) + && !a->exchange) + return; + + a->h_path.dentry = a->src_h_dentry; + au_dtime_store(a->src_dt + AuCHILD, a->src_dentry, &a->h_path); + if (d_is_positive(a->dst_h_dentry)) { + au_fset_ren(a->auren_flags, DT_DSTDIR); + a->h_path.dentry = a->dst_h_dentry; + au_dtime_store(a->dst_dt + AuCHILD, a->dst_dentry, &a->h_path); + } +} + +static void au_ren_rev_dt(int err, struct au_ren_args *a) +{ + struct dentry *h_d; + struct inode *h_inode; + + au_dtime_revert(a->src_dt + AuPARENT); + if (!au_ftest_ren(a->auren_flags, ISSAMEDIR)) + au_dtime_revert(a->dst_dt + AuPARENT); + + if (au_ftest_ren(a->auren_flags, ISDIR_SRC) && err != -EIO) { + h_d = a->src_dt[AuCHILD].dt_h_path.dentry; + h_inode = d_inode(h_d); + inode_lock_nested(h_inode, AuLsc_I_CHILD); + au_dtime_revert(a->src_dt + AuCHILD); + inode_unlock(h_inode); + + if (au_ftest_ren(a->auren_flags, DT_DSTDIR)) { + h_d = a->dst_dt[AuCHILD].dt_h_path.dentry; + h_inode = d_inode(h_d); + inode_lock_nested(h_inode, AuLsc_I_CHILD); + au_dtime_revert(a->dst_dt + AuCHILD); + inode_unlock(h_inode); + } + } +} + +/* ---------------------------------------------------------------------- */ + +int aufs_rename(struct inode *_src_dir, struct dentry *_src_dentry, + struct inode *_dst_dir, struct dentry *_dst_dentry, + unsigned int _flags) +{ + int err, lock_flags; + void *rev; + /* reduce stack space */ + struct au_ren_args *a; + struct au_pin pin; + + AuDbg("%pd, %pd, 0x%x\n", _src_dentry, _dst_dentry, _flags); + IMustLock(_src_dir); + IMustLock(_dst_dir); + + err = -EINVAL; + if (unlikely(_flags & RENAME_WHITEOUT)) + goto out; + + err = -ENOMEM; + BUILD_BUG_ON(sizeof(*a) > PAGE_SIZE); + a = kzalloc(sizeof(*a), GFP_NOFS); + if (unlikely(!a)) + goto out; + + a->flags = _flags; + a->exchange = _flags & RENAME_EXCHANGE; + a->src_dir = _src_dir; + a->src_dentry = _src_dentry; + a->src_inode = NULL; + if (d_really_is_positive(a->src_dentry)) + a->src_inode = d_inode(a->src_dentry); + a->src_parent = a->src_dentry->d_parent; /* dir inode is locked */ + a->dst_dir = _dst_dir; + a->dst_dentry = _dst_dentry; + a->dst_inode = NULL; + if (d_really_is_positive(a->dst_dentry)) + a->dst_inode = d_inode(a->dst_dentry); + a->dst_parent = a->dst_dentry->d_parent; /* dir inode is locked */ + if (a->dst_inode) { + /* + * if EXCHANGE && src is non-dir && dst is dir, + * dst is not locked. + */ + /* IMustLock(a->dst_inode); */ + au_igrab(a->dst_inode); + } + + err = -ENOTDIR; + lock_flags = AuLock_FLUSH | AuLock_NOPLM | AuLock_GEN; + if (d_is_dir(a->src_dentry)) { + au_fset_ren(a->auren_flags, ISDIR_SRC); + if (unlikely(!a->exchange + && d_really_is_positive(a->dst_dentry) + && !d_is_dir(a->dst_dentry))) + goto out_free; + lock_flags |= AuLock_DIRS; + } + if (a->dst_inode && d_is_dir(a->dst_dentry)) { + au_fset_ren(a->auren_flags, ISDIR_DST); + if (unlikely(!a->exchange + && d_really_is_positive(a->src_dentry) + && !d_is_dir(a->src_dentry))) + goto out_free; + lock_flags |= AuLock_DIRS; + } + err = aufs_read_and_write_lock2(a->dst_dentry, a->src_dentry, + lock_flags); + if (unlikely(err)) + goto out_free; + + err = au_d_hashed_positive(a->src_dentry); + if (unlikely(err)) + goto out_unlock; + err = -ENOENT; + if (a->dst_inode) { + /* + * If it is a dir, VFS unhash it before this + * function. It means we cannot rely upon d_unhashed(). + */ + if (unlikely(!a->dst_inode->i_nlink)) + goto out_unlock; + if (!au_ftest_ren(a->auren_flags, ISDIR_DST)) { + err = au_d_hashed_positive(a->dst_dentry); + if (unlikely(err && !a->exchange)) + goto out_unlock; + } else if (unlikely(IS_DEADDIR(a->dst_inode))) + goto out_unlock; + } else if (unlikely(d_unhashed(a->dst_dentry))) + goto out_unlock; + + /* + * is it possible? + * yes, it happened (in linux-3.3-rcN) but I don't know why. + * there may exist a problem somewhere else. + */ + err = -EINVAL; + if (unlikely(d_inode(a->dst_parent) == d_inode(a->src_dentry))) + goto out_unlock; + + au_fset_ren(a->auren_flags, ISSAMEDIR); /* temporary */ + di_write_lock_parent(a->dst_parent); + + /* which branch we process */ + err = au_ren_wbr(a); + if (unlikely(err < 0)) + goto out_parent; + a->br = au_sbr(a->dst_dentry->d_sb, a->btgt); + a->h_path.mnt = au_br_mnt(a->br); + + /* are they available to be renamed */ + err = au_ren_may_dir(a); + if (unlikely(err)) + goto out_children; + + /* prepare the writable parent dir on the same branch */ + if (a->dst_btop == a->btgt) { + au_fset_ren(a->auren_flags, WHDST); + } else { + err = au_cpup_dirs(a->dst_dentry, a->btgt); + if (unlikely(err)) + goto out_children; + } + + err = 0; + if (!a->exchange) { + if (a->src_dir != a->dst_dir) { + /* + * this temporary unlock is safe, + * because both dir->i_mutex are locked. + */ + di_write_unlock(a->dst_parent); + di_write_lock_parent(a->src_parent); + err = au_wr_dir_need_wh(a->src_dentry, + au_ftest_ren(a->auren_flags, + ISDIR_SRC), + &a->btgt); + di_write_unlock(a->src_parent); + di_write_lock2_parent(a->src_parent, a->dst_parent, + /*isdir*/1); + au_fclr_ren(a->auren_flags, ISSAMEDIR); + } else + err = au_wr_dir_need_wh(a->src_dentry, + au_ftest_ren(a->auren_flags, + ISDIR_SRC), + &a->btgt); + } + if (unlikely(err < 0)) + goto out_children; + if (err) + au_fset_ren(a->auren_flags, WHSRC); + + /* cpup src */ + if (a->src_btop != a->btgt) { + err = au_pin(&pin, a->src_dentry, a->btgt, + au_opt_udba(a->src_dentry->d_sb), + AuPin_DI_LOCKED | AuPin_MNT_WRITE); + if (!err) { + struct au_cp_generic cpg = { + .dentry = a->src_dentry, + .bdst = a->btgt, + .bsrc = a->src_btop, + .len = -1, + .pin = &pin, + .flags = AuCpup_DTIME | AuCpup_HOPEN + }; + AuDebugOn(au_dbtop(a->src_dentry) != a->src_btop); + err = au_sio_cpup_simple(&cpg); + au_unpin(&pin); + } + if (unlikely(err)) + goto out_children; + a->src_btop = a->btgt; + a->src_h_dentry = au_h_dptr(a->src_dentry, a->btgt); + if (!a->exchange) + au_fset_ren(a->auren_flags, WHSRC); + } + + /* cpup dst */ + if (a->exchange && a->dst_inode + && a->dst_btop != a->btgt) { + err = au_pin(&pin, a->dst_dentry, a->btgt, + au_opt_udba(a->dst_dentry->d_sb), + AuPin_DI_LOCKED | AuPin_MNT_WRITE); + if (!err) { + struct au_cp_generic cpg = { + .dentry = a->dst_dentry, + .bdst = a->btgt, + .bsrc = a->dst_btop, + .len = -1, + .pin = &pin, + .flags = AuCpup_DTIME | AuCpup_HOPEN + }; + err = au_sio_cpup_simple(&cpg); + au_unpin(&pin); + } + if (unlikely(err)) + goto out_children; + a->dst_btop = a->btgt; + a->dst_h_dentry = au_h_dptr(a->dst_dentry, a->btgt); + } + + /* lock them all */ + err = au_ren_lock(a); + if (unlikely(err)) + /* leave the copied-up one */ + goto out_children; + + if (!a->exchange) { + if (!au_opt_test(au_mntflags(a->dst_dir->i_sb), UDBA_NONE)) + err = au_may_ren(a); + else if (unlikely(a->dst_dentry->d_name.len > AUFS_MAX_NAMELEN)) + err = -ENAMETOOLONG; + if (unlikely(err)) + goto out_hdir; + } + + /* store timestamps to be revertible */ + au_ren_dt(a); + + /* store dirren info */ + if (au_ftest_ren(a->auren_flags, DIRREN)) { + err = au_dr_rename(a->src_dentry, a->btgt, + &a->dst_dentry->d_name, &rev); + AuTraceErr(err); + if (unlikely(err)) + goto out_dt; + } + + /* here we go */ + err = do_rename(a); + if (unlikely(err)) + goto out_dirren; + + if (au_ftest_ren(a->auren_flags, DIRREN)) + au_dr_rename_fin(a->src_dentry, a->btgt, rev); + + /* update dir attributes */ + au_ren_refresh_dir(a); + + /* dput/iput all lower dentries */ + au_ren_refresh(a); + + goto out_hdir; /* success */ + +out_dirren: + if (au_ftest_ren(a->auren_flags, DIRREN)) + au_dr_rename_rev(a->src_dentry, a->btgt, rev); +out_dt: + au_ren_rev_dt(err, a); +out_hdir: + au_ren_unlock(a); +out_children: + au_nhash_wh_free(&a->whlist); + if (err && a->dst_inode && a->dst_btop != a->btgt) { + AuDbg("btop %d, btgt %d\n", a->dst_btop, a->btgt); + au_set_h_dptr(a->dst_dentry, a->btgt, NULL); + au_set_dbtop(a->dst_dentry, a->dst_btop); + } +out_parent: + if (!err) { + if (d_unhashed(a->src_dentry)) + au_fset_ren(a->auren_flags, DROPPED_SRC); + if (d_unhashed(a->dst_dentry)) + au_fset_ren(a->auren_flags, DROPPED_DST); + if (!a->exchange) + d_move(a->src_dentry, a->dst_dentry); + else { + d_exchange(a->src_dentry, a->dst_dentry); + if (au_ftest_ren(a->auren_flags, DROPPED_DST)) + d_drop(a->dst_dentry); + } + if (au_ftest_ren(a->auren_flags, DROPPED_SRC)) + d_drop(a->src_dentry); + } else { + au_update_dbtop(a->dst_dentry); + if (!a->dst_inode) + d_drop(a->dst_dentry); + } + if (au_ftest_ren(a->auren_flags, ISSAMEDIR)) + di_write_unlock(a->dst_parent); + else + di_write_unlock2(a->src_parent, a->dst_parent); +out_unlock: + aufs_read_and_write_unlock2(a->dst_dentry, a->src_dentry); +out_free: + iput(a->dst_inode); + if (a->thargs) + au_whtmp_rmdir_free(a->thargs); + kfree(a); +out: + AuTraceErr(err); + return err; +} diff --git a/include/fs/aufs/iinfo.c b/include/fs/aufs/iinfo.c new file mode 100644 index 00000000000..d5cba3b98eb --- /dev/null +++ b/include/fs/aufs/iinfo.c @@ -0,0 +1,285 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * inode private data + */ + +#include "aufs.h" + +struct inode *au_h_iptr(struct inode *inode, aufs_bindex_t bindex) +{ + struct inode *h_inode; + struct au_hinode *hinode; + + IiMustAnyLock(inode); + + hinode = au_hinode(au_ii(inode), bindex); + h_inode = hinode->hi_inode; + AuDebugOn(h_inode && atomic_read(&h_inode->i_count) <= 0); + return h_inode; +} + +/* todo: hard/soft set? */ +void au_hiput(struct au_hinode *hinode) +{ + au_hn_free(hinode); + dput(hinode->hi_whdentry); + iput(hinode->hi_inode); +} + +unsigned int au_hi_flags(struct inode *inode, int isdir) +{ + unsigned int flags; + const unsigned int mnt_flags = au_mntflags(inode->i_sb); + + flags = 0; + if (au_opt_test(mnt_flags, XINO)) + au_fset_hi(flags, XINO); + if (isdir && au_opt_test(mnt_flags, UDBA_HNOTIFY)) + au_fset_hi(flags, HNOTIFY); + return flags; +} + +void au_set_h_iptr(struct inode *inode, aufs_bindex_t bindex, + struct inode *h_inode, unsigned int flags) +{ + struct au_hinode *hinode; + struct inode *hi; + struct au_iinfo *iinfo = au_ii(inode); + + IiMustWriteLock(inode); + + hinode = au_hinode(iinfo, bindex); + hi = hinode->hi_inode; + AuDebugOn(h_inode && atomic_read(&h_inode->i_count) <= 0); + + if (hi) + au_hiput(hinode); + hinode->hi_inode = h_inode; + if (h_inode) { + int err; + struct super_block *sb = inode->i_sb; + struct au_branch *br; + + AuDebugOn(inode->i_mode + && (h_inode->i_mode & S_IFMT) + != (inode->i_mode & S_IFMT)); + if (bindex == iinfo->ii_btop) + au_cpup_igen(inode, h_inode); + br = au_sbr(sb, bindex); + hinode->hi_id = br->br_id; + if (au_ftest_hi(flags, XINO)) { + err = au_xino_write(sb, bindex, h_inode->i_ino, + inode->i_ino); + if (unlikely(err)) + AuIOErr1("failed au_xino_write() %d\n", err); + } + + if (au_ftest_hi(flags, HNOTIFY) + && au_br_hnotifyable(br->br_perm)) { + err = au_hn_alloc(hinode, inode); + if (unlikely(err)) + AuIOErr1("au_hn_alloc() %d\n", err); + } + } +} + +void au_set_hi_wh(struct inode *inode, aufs_bindex_t bindex, + struct dentry *h_wh) +{ + struct au_hinode *hinode; + + IiMustWriteLock(inode); + + hinode = au_hinode(au_ii(inode), bindex); + AuDebugOn(hinode->hi_whdentry); + hinode->hi_whdentry = h_wh; +} + +void au_update_iigen(struct inode *inode, int half) +{ + struct au_iinfo *iinfo; + struct au_iigen *iigen; + unsigned int sigen; + + sigen = au_sigen(inode->i_sb); + iinfo = au_ii(inode); + iigen = &iinfo->ii_generation; + spin_lock(&iigen->ig_spin); + iigen->ig_generation = sigen; + if (half) + au_ig_fset(iigen->ig_flags, HALF_REFRESHED); + else + au_ig_fclr(iigen->ig_flags, HALF_REFRESHED); + spin_unlock(&iigen->ig_spin); +} + +/* it may be called at remount time, too */ +void au_update_ibrange(struct inode *inode, int do_put_zero) +{ + struct au_iinfo *iinfo; + aufs_bindex_t bindex, bbot; + + AuDebugOn(au_is_bad_inode(inode)); + IiMustWriteLock(inode); + + iinfo = au_ii(inode); + if (do_put_zero && iinfo->ii_btop >= 0) { + for (bindex = iinfo->ii_btop; bindex <= iinfo->ii_bbot; + bindex++) { + struct inode *h_i; + + h_i = au_hinode(iinfo, bindex)->hi_inode; + if (h_i + && !h_i->i_nlink + && !(h_i->i_state & I_LINKABLE)) + au_set_h_iptr(inode, bindex, NULL, 0); + } + } + + iinfo->ii_btop = -1; + iinfo->ii_bbot = -1; + bbot = au_sbbot(inode->i_sb); + for (bindex = 0; bindex <= bbot; bindex++) + if (au_hinode(iinfo, bindex)->hi_inode) { + iinfo->ii_btop = bindex; + break; + } + if (iinfo->ii_btop >= 0) + for (bindex = bbot; bindex >= iinfo->ii_btop; bindex--) + if (au_hinode(iinfo, bindex)->hi_inode) { + iinfo->ii_bbot = bindex; + break; + } + AuDebugOn(iinfo->ii_btop > iinfo->ii_bbot); +} + +/* ---------------------------------------------------------------------- */ + +void au_icntnr_init_once(void *_c) +{ + struct au_icntnr *c = _c; + struct au_iinfo *iinfo = &c->iinfo; + + spin_lock_init(&iinfo->ii_generation.ig_spin); + au_rw_init(&iinfo->ii_rwsem); + inode_init_once(&c->vfs_inode); +} + +void au_hinode_init(struct au_hinode *hinode) +{ + hinode->hi_inode = NULL; + hinode->hi_id = -1; + au_hn_init(hinode); + hinode->hi_whdentry = NULL; +} + +int au_iinfo_init(struct inode *inode) +{ + struct au_iinfo *iinfo; + struct super_block *sb; + struct au_hinode *hi; + int nbr, i; + + sb = inode->i_sb; + iinfo = &(container_of(inode, struct au_icntnr, vfs_inode)->iinfo); + nbr = au_sbbot(sb) + 1; + if (unlikely(nbr <= 0)) + nbr = 1; + hi = kmalloc_array(nbr, sizeof(*iinfo->ii_hinode), GFP_NOFS); + if (hi) { + au_ninodes_inc(sb); + + iinfo->ii_hinode = hi; + for (i = 0; i < nbr; i++, hi++) + au_hinode_init(hi); + + iinfo->ii_generation.ig_generation = au_sigen(sb); + iinfo->ii_btop = -1; + iinfo->ii_bbot = -1; + iinfo->ii_vdir = NULL; + return 0; + } + return -ENOMEM; +} + +int au_hinode_realloc(struct au_iinfo *iinfo, int nbr, int may_shrink) +{ + int err, i; + struct au_hinode *hip; + + AuRwMustWriteLock(&iinfo->ii_rwsem); + + err = -ENOMEM; + hip = au_krealloc(iinfo->ii_hinode, sizeof(*hip) * nbr, GFP_NOFS, + may_shrink); + if (hip) { + iinfo->ii_hinode = hip; + i = iinfo->ii_bbot + 1; + hip += i; + for (; i < nbr; i++, hip++) + au_hinode_init(hip); + err = 0; + } + + return err; +} + +void au_iinfo_fin(struct inode *inode) +{ + struct au_iinfo *iinfo; + struct au_hinode *hi; + struct super_block *sb; + aufs_bindex_t bindex, bbot; + const unsigned char unlinked = !inode->i_nlink; + + AuDebugOn(au_is_bad_inode(inode)); + + sb = inode->i_sb; + au_ninodes_dec(sb); + if (si_pid_test(sb)) + au_xino_delete_inode(inode, unlinked); + else { + /* + * it is safe to hide the dependency between sbinfo and + * sb->s_umount. + */ + lockdep_off(); + si_noflush_read_lock(sb); + au_xino_delete_inode(inode, unlinked); + si_read_unlock(sb); + lockdep_on(); + } + + iinfo = au_ii(inode); + if (iinfo->ii_vdir) + au_vdir_free(iinfo->ii_vdir); + + bindex = iinfo->ii_btop; + if (bindex >= 0) { + hi = au_hinode(iinfo, bindex); + bbot = iinfo->ii_bbot; + while (bindex++ <= bbot) { + if (hi->hi_inode) + au_hiput(hi); + hi++; + } + } + kfree(iinfo->ii_hinode); + AuRwDestroy(&iinfo->ii_rwsem); +} diff --git a/include/fs/aufs/inode.c b/include/fs/aufs/inode.c new file mode 100644 index 00000000000..79803c4ef43 --- /dev/null +++ b/include/fs/aufs/inode.c @@ -0,0 +1,527 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * inode functions + */ + +#include "aufs.h" + +struct inode *au_igrab(struct inode *inode) +{ + if (inode) { + AuDebugOn(!atomic_read(&inode->i_count)); + ihold(inode); + } + return inode; +} + +static void au_refresh_hinode_attr(struct inode *inode, int do_version) +{ + au_cpup_attr_all(inode, /*force*/0); + au_update_iigen(inode, /*half*/1); + if (do_version) + inode->i_version++; +} + +static int au_ii_refresh(struct inode *inode, int *update) +{ + int err, e, nbr; + umode_t type; + aufs_bindex_t bindex, new_bindex; + struct super_block *sb; + struct au_iinfo *iinfo; + struct au_hinode *p, *q, tmp; + + AuDebugOn(au_is_bad_inode(inode)); + IiMustWriteLock(inode); + + *update = 0; + sb = inode->i_sb; + nbr = au_sbbot(sb) + 1; + type = inode->i_mode & S_IFMT; + iinfo = au_ii(inode); + err = au_hinode_realloc(iinfo, nbr, /*may_shrink*/0); + if (unlikely(err)) + goto out; + + AuDebugOn(iinfo->ii_btop < 0); + p = au_hinode(iinfo, iinfo->ii_btop); + for (bindex = iinfo->ii_btop; bindex <= iinfo->ii_bbot; + bindex++, p++) { + if (!p->hi_inode) + continue; + + AuDebugOn(type != (p->hi_inode->i_mode & S_IFMT)); + new_bindex = au_br_index(sb, p->hi_id); + if (new_bindex == bindex) + continue; + + if (new_bindex < 0) { + *update = 1; + au_hiput(p); + p->hi_inode = NULL; + continue; + } + + if (new_bindex < iinfo->ii_btop) + iinfo->ii_btop = new_bindex; + if (iinfo->ii_bbot < new_bindex) + iinfo->ii_bbot = new_bindex; + /* swap two lower inode, and loop again */ + q = au_hinode(iinfo, new_bindex); + tmp = *q; + *q = *p; + *p = tmp; + if (tmp.hi_inode) { + bindex--; + p--; + } + } + au_update_ibrange(inode, /*do_put_zero*/0); + au_hinode_realloc(iinfo, nbr, /*may_shrink*/1); /* harmless if err */ + e = au_dy_irefresh(inode); + if (unlikely(e && !err)) + err = e; + +out: + AuTraceErr(err); + return err; +} + +void au_refresh_iop(struct inode *inode, int force_getattr) +{ + int type; + struct au_sbinfo *sbi = au_sbi(inode->i_sb); + const struct inode_operations *iop + = force_getattr ? aufs_iop : sbi->si_iop_array; + + if (inode->i_op == iop) + return; + + switch (inode->i_mode & S_IFMT) { + case S_IFDIR: + type = AuIop_DIR; + break; + case S_IFLNK: + type = AuIop_SYMLINK; + break; + default: + type = AuIop_OTHER; + break; + } + + inode->i_op = iop + type; + /* unnecessary smp_wmb() */ +} + +int au_refresh_hinode_self(struct inode *inode) +{ + int err, update; + + err = au_ii_refresh(inode, &update); + if (!err) + au_refresh_hinode_attr(inode, update && S_ISDIR(inode->i_mode)); + + AuTraceErr(err); + return err; +} + +int au_refresh_hinode(struct inode *inode, struct dentry *dentry) +{ + int err, e, update; + unsigned int flags; + umode_t mode; + aufs_bindex_t bindex, bbot; + unsigned char isdir; + struct au_hinode *p; + struct au_iinfo *iinfo; + + err = au_ii_refresh(inode, &update); + if (unlikely(err)) + goto out; + + update = 0; + iinfo = au_ii(inode); + p = au_hinode(iinfo, iinfo->ii_btop); + mode = (inode->i_mode & S_IFMT); + isdir = S_ISDIR(mode); + flags = au_hi_flags(inode, isdir); + bbot = au_dbbot(dentry); + for (bindex = au_dbtop(dentry); bindex <= bbot; bindex++) { + struct inode *h_i, *h_inode; + struct dentry *h_d; + + h_d = au_h_dptr(dentry, bindex); + if (!h_d || d_is_negative(h_d)) + continue; + + h_inode = d_inode(h_d); + AuDebugOn(mode != (h_inode->i_mode & S_IFMT)); + if (iinfo->ii_btop <= bindex && bindex <= iinfo->ii_bbot) { + h_i = au_h_iptr(inode, bindex); + if (h_i) { + if (h_i == h_inode) + continue; + err = -EIO; + break; + } + } + if (bindex < iinfo->ii_btop) + iinfo->ii_btop = bindex; + if (iinfo->ii_bbot < bindex) + iinfo->ii_bbot = bindex; + au_set_h_iptr(inode, bindex, au_igrab(h_inode), flags); + update = 1; + } + au_update_ibrange(inode, /*do_put_zero*/0); + e = au_dy_irefresh(inode); + if (unlikely(e && !err)) + err = e; + if (!err) + au_refresh_hinode_attr(inode, update && isdir); + +out: + AuTraceErr(err); + return err; +} + +static int set_inode(struct inode *inode, struct dentry *dentry) +{ + int err; + unsigned int flags; + umode_t mode; + aufs_bindex_t bindex, btop, btail; + unsigned char isdir; + struct dentry *h_dentry; + struct inode *h_inode; + struct au_iinfo *iinfo; + struct inode_operations *iop; + + IiMustWriteLock(inode); + + err = 0; + isdir = 0; + iop = au_sbi(inode->i_sb)->si_iop_array; + btop = au_dbtop(dentry); + h_dentry = au_h_dptr(dentry, btop); + h_inode = d_inode(h_dentry); + mode = h_inode->i_mode; + switch (mode & S_IFMT) { + case S_IFREG: + btail = au_dbtail(dentry); + inode->i_op = iop + AuIop_OTHER; + inode->i_fop = &aufs_file_fop; + err = au_dy_iaop(inode, btop, h_inode); + if (unlikely(err)) + goto out; + break; + case S_IFDIR: + isdir = 1; + btail = au_dbtaildir(dentry); + inode->i_op = iop + AuIop_DIR; + inode->i_fop = &aufs_dir_fop; + break; + case S_IFLNK: + btail = au_dbtail(dentry); + inode->i_op = iop + AuIop_SYMLINK; + break; + case S_IFBLK: + case S_IFCHR: + case S_IFIFO: + case S_IFSOCK: + btail = au_dbtail(dentry); + inode->i_op = iop + AuIop_OTHER; + init_special_inode(inode, mode, h_inode->i_rdev); + break; + default: + AuIOErr("Unknown file type 0%o\n", mode); + err = -EIO; + goto out; + } + + /* do not set hnotify for whiteouted dirs (SHWH mode) */ + flags = au_hi_flags(inode, isdir); + if (au_opt_test(au_mntflags(dentry->d_sb), SHWH) + && au_ftest_hi(flags, HNOTIFY) + && dentry->d_name.len > AUFS_WH_PFX_LEN + && !memcmp(dentry->d_name.name, AUFS_WH_PFX, AUFS_WH_PFX_LEN)) + au_fclr_hi(flags, HNOTIFY); + iinfo = au_ii(inode); + iinfo->ii_btop = btop; + iinfo->ii_bbot = btail; + for (bindex = btop; bindex <= btail; bindex++) { + h_dentry = au_h_dptr(dentry, bindex); + if (h_dentry) + au_set_h_iptr(inode, bindex, + au_igrab(d_inode(h_dentry)), flags); + } + au_cpup_attr_all(inode, /*force*/1); + /* + * to force calling aufs_get_acl() every time, + * do not call cache_no_acl() for aufs inode. + */ + +out: + return err; +} + +/* + * successful returns with iinfo write_locked + * minus: errno + * zero: success, matched + * plus: no error, but unmatched + */ +static int reval_inode(struct inode *inode, struct dentry *dentry) +{ + int err; + unsigned int gen, igflags; + aufs_bindex_t bindex, bbot; + struct inode *h_inode, *h_dinode; + struct dentry *h_dentry; + + /* + * before this function, if aufs got any iinfo lock, it must be only + * one, the parent dir. + * it can happen by UDBA and the obsoleted inode number. + */ + err = -EIO; + if (unlikely(inode->i_ino == parent_ino(dentry))) + goto out; + + err = 1; + ii_write_lock_new_child(inode); + h_dentry = au_h_dptr(dentry, au_dbtop(dentry)); + h_dinode = d_inode(h_dentry); + bbot = au_ibbot(inode); + for (bindex = au_ibtop(inode); bindex <= bbot; bindex++) { + h_inode = au_h_iptr(inode, bindex); + if (!h_inode || h_inode != h_dinode) + continue; + + err = 0; + gen = au_iigen(inode, &igflags); + if (gen == au_digen(dentry) + && !au_ig_ftest(igflags, HALF_REFRESHED)) + break; + + /* fully refresh inode using dentry */ + err = au_refresh_hinode(inode, dentry); + if (!err) + au_update_iigen(inode, /*half*/0); + break; + } + + if (unlikely(err)) + ii_write_unlock(inode); +out: + return err; +} + +int au_ino(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino, + unsigned int d_type, ino_t *ino) +{ + int err, idx; + const int isnondir = d_type != DT_DIR; + + /* prevent hardlinked inode number from race condition */ + if (isnondir) { + err = au_xinondir_enter(sb, bindex, h_ino, &idx); + if (unlikely(err)) + goto out; + } + + err = au_xino_read(sb, bindex, h_ino, ino); + if (unlikely(err)) + goto out_xinondir; + + if (!*ino) { + err = -EIO; + *ino = au_xino_new_ino(sb); + if (unlikely(!*ino)) + goto out_xinondir; + err = au_xino_write(sb, bindex, h_ino, *ino); + if (unlikely(err)) + goto out_xinondir; + } + +out_xinondir: + if (isnondir && idx >= 0) + au_xinondir_leave(sb, bindex, h_ino, idx); +out: + return err; +} + +/* successful returns with iinfo write_locked */ +/* todo: return with unlocked? */ +struct inode *au_new_inode(struct dentry *dentry, int must_new) +{ + struct inode *inode, *h_inode; + struct dentry *h_dentry; + struct super_block *sb; + ino_t h_ino, ino; + int err, idx, hlinked; + aufs_bindex_t btop; + + sb = dentry->d_sb; + btop = au_dbtop(dentry); + h_dentry = au_h_dptr(dentry, btop); + h_inode = d_inode(h_dentry); + h_ino = h_inode->i_ino; + hlinked = !d_is_dir(h_dentry) && h_inode->i_nlink > 1; + +new_ino: + /* + * stop 'race'-ing between hardlinks under different + * parents. + */ + if (hlinked) { + err = au_xinondir_enter(sb, btop, h_ino, &idx); + inode = ERR_PTR(err); + if (unlikely(err)) + goto out; + } + + err = au_xino_read(sb, btop, h_ino, &ino); + inode = ERR_PTR(err); + if (unlikely(err)) + goto out_xinondir; + + if (!ino) { + ino = au_xino_new_ino(sb); + if (unlikely(!ino)) { + inode = ERR_PTR(-EIO); + goto out_xinondir; + } + } + + AuDbg("i%lu\n", (unsigned long)ino); + inode = au_iget_locked(sb, ino); + err = PTR_ERR(inode); + if (IS_ERR(inode)) + goto out_xinondir; + + AuDbg("%lx, new %d\n", inode->i_state, !!(inode->i_state & I_NEW)); + if (inode->i_state & I_NEW) { + ii_write_lock_new_child(inode); + err = set_inode(inode, dentry); + if (!err) { + unlock_new_inode(inode); + goto out_xinondir; /* success */ + } + + /* + * iget_failed() calls iput(), but we need to call + * ii_write_unlock() after iget_failed(). so dirty hack for + * i_count. + */ + atomic_inc(&inode->i_count); + iget_failed(inode); + ii_write_unlock(inode); + au_xino_write(sb, btop, h_ino, /*ino*/0); + /* ignore this error */ + goto out_iput; + } else if (!must_new && !IS_DEADDIR(inode) && inode->i_nlink) { + /* + * horrible race condition between lookup, readdir and copyup + * (or something). + */ + if (hlinked && idx >= 0) + au_xinondir_leave(sb, btop, h_ino, idx); + err = reval_inode(inode, dentry); + if (unlikely(err < 0)) { + hlinked = 0; + goto out_iput; + } + if (!err) + goto out; /* success */ + else if (hlinked && idx >= 0) { + err = au_xinondir_enter(sb, btop, h_ino, &idx); + if (unlikely(err)) { + iput(inode); + inode = ERR_PTR(err); + goto out; + } + } + } + + if (unlikely(au_test_fs_unique_ino(h_inode))) + AuWarn1("Warning: Un-notified UDBA or repeatedly renamed dir," + " b%d, %s, %pd, hi%lu, i%lu.\n", + btop, au_sbtype(h_dentry->d_sb), dentry, + (unsigned long)h_ino, (unsigned long)ino); + ino = 0; + err = au_xino_write(sb, btop, h_ino, /*ino*/0); + if (!err) { + iput(inode); + if (hlinked && idx >= 0) + au_xinondir_leave(sb, btop, h_ino, idx); + goto new_ino; + } + +out_iput: + iput(inode); + inode = ERR_PTR(err); +out_xinondir: + if (hlinked && idx >= 0) + au_xinondir_leave(sb, btop, h_ino, idx); +out: + return inode; +} + +/* ---------------------------------------------------------------------- */ + +int au_test_ro(struct super_block *sb, aufs_bindex_t bindex, + struct inode *inode) +{ + int err; + struct inode *hi; + + err = au_br_rdonly(au_sbr(sb, bindex)); + + /* pseudo-link after flushed may happen out of bounds */ + if (!err + && inode + && au_ibtop(inode) <= bindex + && bindex <= au_ibbot(inode)) { + /* + * permission check is unnecessary since vfsub routine + * will be called later + */ + hi = au_h_iptr(inode, bindex); + if (hi) + err = IS_IMMUTABLE(hi) ? -EROFS : 0; + } + + return err; +} + +int au_test_h_perm(struct inode *h_inode, int mask) +{ + if (uid_eq(current_fsuid(), GLOBAL_ROOT_UID)) + return 0; + return inode_permission(h_inode, mask); +} + +int au_test_h_perm_sio(struct inode *h_inode, int mask) +{ + if (au_test_nfs(h_inode->i_sb) + && (mask & MAY_WRITE) + && S_ISDIR(h_inode->i_mode)) + mask |= MAY_READ; /* force permission check */ + return au_test_h_perm(h_inode, mask); +} diff --git a/include/fs/aufs/inode.h b/include/fs/aufs/inode.h new file mode 100644 index 00000000000..35e02ad9fd4 --- /dev/null +++ b/include/fs/aufs/inode.h @@ -0,0 +1,695 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * inode operations + */ + +#ifndef __AUFS_INODE_H__ +#define __AUFS_INODE_H__ + +#ifdef __KERNEL__ + +#include +#include "rwsem.h" + +struct vfsmount; + +struct au_hnotify { +#ifdef CONFIG_AUFS_HNOTIFY +#ifdef CONFIG_AUFS_HFSNOTIFY + /* never use fsnotify_add_vfsmount_mark() */ + struct fsnotify_mark hn_mark; +#endif + struct inode *hn_aufs_inode; /* no get/put */ +#endif +} ____cacheline_aligned_in_smp; + +struct au_hinode { + struct inode *hi_inode; + aufs_bindex_t hi_id; +#ifdef CONFIG_AUFS_HNOTIFY + struct au_hnotify *hi_notify; +#endif + + /* reference to the copied-up whiteout with get/put */ + struct dentry *hi_whdentry; +}; + +/* ig_flags */ +#define AuIG_HALF_REFRESHED 1 +#define au_ig_ftest(flags, name) ((flags) & AuIG_##name) +#define au_ig_fset(flags, name) \ + do { (flags) |= AuIG_##name; } while (0) +#define au_ig_fclr(flags, name) \ + do { (flags) &= ~AuIG_##name; } while (0) + +struct au_iigen { + spinlock_t ig_spin; + __u32 ig_generation, ig_flags; +}; + +struct au_vdir; +struct au_iinfo { + struct au_iigen ii_generation; + struct super_block *ii_hsb1; /* no get/put */ + + struct au_rwsem ii_rwsem; + aufs_bindex_t ii_btop, ii_bbot; + __u32 ii_higen; + struct au_hinode *ii_hinode; + struct au_vdir *ii_vdir; +}; + +struct au_icntnr { + struct au_iinfo iinfo; + struct inode vfs_inode; + struct hlist_bl_node plink; +} ____cacheline_aligned_in_smp; + +/* au_pin flags */ +#define AuPin_DI_LOCKED 1 +#define AuPin_MNT_WRITE (1 << 1) +#define au_ftest_pin(flags, name) ((flags) & AuPin_##name) +#define au_fset_pin(flags, name) \ + do { (flags) |= AuPin_##name; } while (0) +#define au_fclr_pin(flags, name) \ + do { (flags) &= ~AuPin_##name; } while (0) + +struct au_pin { + /* input */ + struct dentry *dentry; + unsigned int udba; + unsigned char lsc_di, lsc_hi, flags; + aufs_bindex_t bindex; + + /* output */ + struct dentry *parent; + struct au_hinode *hdir; + struct vfsmount *h_mnt; + + /* temporary unlock/relock for copyup */ + struct dentry *h_dentry, *h_parent; + struct au_branch *br; + struct task_struct *task; +}; + +void au_pin_hdir_unlock(struct au_pin *p); +int au_pin_hdir_lock(struct au_pin *p); +int au_pin_hdir_relock(struct au_pin *p); +void au_pin_hdir_acquire_nest(struct au_pin *p); +void au_pin_hdir_release(struct au_pin *p); + +/* ---------------------------------------------------------------------- */ + +static inline struct au_iinfo *au_ii(struct inode *inode) +{ + BUG_ON(is_bad_inode(inode)); + return &(container_of(inode, struct au_icntnr, vfs_inode)->iinfo); +} + +/* ---------------------------------------------------------------------- */ + +/* inode.c */ +struct inode *au_igrab(struct inode *inode); +void au_refresh_iop(struct inode *inode, int force_getattr); +int au_refresh_hinode_self(struct inode *inode); +int au_refresh_hinode(struct inode *inode, struct dentry *dentry); +int au_ino(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino, + unsigned int d_type, ino_t *ino); +struct inode *au_new_inode(struct dentry *dentry, int must_new); +int au_test_ro(struct super_block *sb, aufs_bindex_t bindex, + struct inode *inode); +int au_test_h_perm(struct inode *h_inode, int mask); +int au_test_h_perm_sio(struct inode *h_inode, int mask); + +static inline int au_wh_ino(struct super_block *sb, aufs_bindex_t bindex, + ino_t h_ino, unsigned int d_type, ino_t *ino) +{ +#ifdef CONFIG_AUFS_SHWH + return au_ino(sb, bindex, h_ino, d_type, ino); +#else + return 0; +#endif +} + +/* i_op.c */ +enum { + AuIop_SYMLINK, + AuIop_DIR, + AuIop_OTHER, + AuIop_Last +}; +extern struct inode_operations aufs_iop[AuIop_Last], + aufs_iop_nogetattr[AuIop_Last]; + +/* au_wr_dir flags */ +#define AuWrDir_ADD_ENTRY 1 +#define AuWrDir_ISDIR (1 << 1) +#define AuWrDir_TMPFILE (1 << 2) +#define au_ftest_wrdir(flags, name) ((flags) & AuWrDir_##name) +#define au_fset_wrdir(flags, name) \ + do { (flags) |= AuWrDir_##name; } while (0) +#define au_fclr_wrdir(flags, name) \ + do { (flags) &= ~AuWrDir_##name; } while (0) + +struct au_wr_dir_args { + aufs_bindex_t force_btgt; + unsigned char flags; +}; +int au_wr_dir(struct dentry *dentry, struct dentry *src_dentry, + struct au_wr_dir_args *args); + +struct dentry *au_pinned_h_parent(struct au_pin *pin); +void au_pin_init(struct au_pin *pin, struct dentry *dentry, + aufs_bindex_t bindex, int lsc_di, int lsc_hi, + unsigned int udba, unsigned char flags); +int au_pin(struct au_pin *pin, struct dentry *dentry, aufs_bindex_t bindex, + unsigned int udba, unsigned char flags) __must_check; +int au_do_pin(struct au_pin *pin) __must_check; +void au_unpin(struct au_pin *pin); +int au_reval_for_attr(struct dentry *dentry, unsigned int sigen); + +#define AuIcpup_DID_CPUP 1 +#define au_ftest_icpup(flags, name) ((flags) & AuIcpup_##name) +#define au_fset_icpup(flags, name) \ + do { (flags) |= AuIcpup_##name; } while (0) +#define au_fclr_icpup(flags, name) \ + do { (flags) &= ~AuIcpup_##name; } while (0) + +struct au_icpup_args { + unsigned char flags; + unsigned char pin_flags; + aufs_bindex_t btgt; + unsigned int udba; + struct au_pin pin; + struct path h_path; + struct inode *h_inode; +}; + +int au_pin_and_icpup(struct dentry *dentry, struct iattr *ia, + struct au_icpup_args *a); + +int au_h_path_getattr(struct dentry *dentry, int force, struct path *h_path, + int locked); + +/* i_op_add.c */ +int au_may_add(struct dentry *dentry, aufs_bindex_t bindex, + struct dentry *h_parent, int isdir); +int aufs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, + dev_t dev); +int aufs_symlink(struct inode *dir, struct dentry *dentry, const char *symname); +int aufs_create(struct inode *dir, struct dentry *dentry, umode_t mode, + bool want_excl); +struct vfsub_aopen_args; +int au_aopen_or_create(struct inode *dir, struct dentry *dentry, + struct vfsub_aopen_args *args); +int aufs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode); +int aufs_link(struct dentry *src_dentry, struct inode *dir, + struct dentry *dentry); +int aufs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); + +/* i_op_del.c */ +int au_wr_dir_need_wh(struct dentry *dentry, int isdir, aufs_bindex_t *bcpup); +int au_may_del(struct dentry *dentry, aufs_bindex_t bindex, + struct dentry *h_parent, int isdir); +int aufs_unlink(struct inode *dir, struct dentry *dentry); +int aufs_rmdir(struct inode *dir, struct dentry *dentry); + +/* i_op_ren.c */ +int au_wbr(struct dentry *dentry, aufs_bindex_t btgt); +int aufs_rename(struct inode *src_dir, struct dentry *src_dentry, + struct inode *dir, struct dentry *dentry, + unsigned int flags); + +/* iinfo.c */ +struct inode *au_h_iptr(struct inode *inode, aufs_bindex_t bindex); +void au_hiput(struct au_hinode *hinode); +void au_set_hi_wh(struct inode *inode, aufs_bindex_t bindex, + struct dentry *h_wh); +unsigned int au_hi_flags(struct inode *inode, int isdir); + +/* hinode flags */ +#define AuHi_XINO 1 +#define AuHi_HNOTIFY (1 << 1) +#define au_ftest_hi(flags, name) ((flags) & AuHi_##name) +#define au_fset_hi(flags, name) \ + do { (flags) |= AuHi_##name; } while (0) +#define au_fclr_hi(flags, name) \ + do { (flags) &= ~AuHi_##name; } while (0) + +#ifndef CONFIG_AUFS_HNOTIFY +#undef AuHi_HNOTIFY +#define AuHi_HNOTIFY 0 +#endif + +void au_set_h_iptr(struct inode *inode, aufs_bindex_t bindex, + struct inode *h_inode, unsigned int flags); + +void au_update_iigen(struct inode *inode, int half); +void au_update_ibrange(struct inode *inode, int do_put_zero); + +void au_icntnr_init_once(void *_c); +void au_hinode_init(struct au_hinode *hinode); +int au_iinfo_init(struct inode *inode); +void au_iinfo_fin(struct inode *inode); +int au_hinode_realloc(struct au_iinfo *iinfo, int nbr, int may_shrink); + +#ifdef CONFIG_PROC_FS +/* plink.c */ +int au_plink_maint(struct super_block *sb, int flags); +struct au_sbinfo; +void au_plink_maint_leave(struct au_sbinfo *sbinfo); +int au_plink_maint_enter(struct super_block *sb); +#ifdef CONFIG_AUFS_DEBUG +void au_plink_list(struct super_block *sb); +#else +AuStubVoid(au_plink_list, struct super_block *sb) +#endif +int au_plink_test(struct inode *inode); +struct dentry *au_plink_lkup(struct inode *inode, aufs_bindex_t bindex); +void au_plink_append(struct inode *inode, aufs_bindex_t bindex, + struct dentry *h_dentry); +void au_plink_put(struct super_block *sb, int verbose); +void au_plink_clean(struct super_block *sb, int verbose); +void au_plink_half_refresh(struct super_block *sb, aufs_bindex_t br_id); +#else +AuStubInt0(au_plink_maint, struct super_block *sb, int flags); +AuStubVoid(au_plink_maint_leave, struct au_sbinfo *sbinfo); +AuStubInt0(au_plink_maint_enter, struct super_block *sb); +AuStubVoid(au_plink_list, struct super_block *sb); +AuStubInt0(au_plink_test, struct inode *inode); +AuStub(struct dentry *, au_plink_lkup, return NULL, + struct inode *inode, aufs_bindex_t bindex); +AuStubVoid(au_plink_append, struct inode *inode, aufs_bindex_t bindex, + struct dentry *h_dentry); +AuStubVoid(au_plink_put, struct super_block *sb, int verbose); +AuStubVoid(au_plink_clean, struct super_block *sb, int verbose); +AuStubVoid(au_plink_half_refresh, struct super_block *sb, aufs_bindex_t br_id); +#endif /* CONFIG_PROC_FS */ + +#ifdef CONFIG_AUFS_XATTR +/* xattr.c */ +int au_cpup_xattr(struct dentry *h_dst, struct dentry *h_src, int ignore_flags, + unsigned int verbose); +ssize_t aufs_listxattr(struct dentry *dentry, char *list, size_t size); +void au_xattr_init(struct super_block *sb); +#else +AuStubInt0(au_cpup_xattr, struct dentry *h_dst, struct dentry *h_src, + int ignore_flags, unsigned int verbose); +AuStubVoid(au_xattr_init, struct super_block *sb); +#endif + +#ifdef CONFIG_FS_POSIX_ACL +struct posix_acl *aufs_get_acl(struct inode *inode, int type); +int aufs_set_acl(struct inode *inode, struct posix_acl *acl, int type); +#endif + +#if IS_ENABLED(CONFIG_AUFS_XATTR) || IS_ENABLED(CONFIG_FS_POSIX_ACL) +enum { + AU_XATTR_SET, + AU_ACL_SET +}; + +struct au_sxattr { + int type; + union { + struct { + const char *name; + const void *value; + size_t size; + int flags; + } set; + struct { + struct posix_acl *acl; + int type; + } acl_set; + } u; +}; +ssize_t au_sxattr(struct dentry *dentry, struct inode *inode, + struct au_sxattr *arg); +#endif + +/* ---------------------------------------------------------------------- */ + +/* lock subclass for iinfo */ +enum { + AuLsc_II_CHILD, /* child first */ + AuLsc_II_CHILD2, /* rename(2), link(2), and cpup at hnotify */ + AuLsc_II_CHILD3, /* copyup dirs */ + AuLsc_II_PARENT, /* see AuLsc_I_PARENT in vfsub.h */ + AuLsc_II_PARENT2, + AuLsc_II_PARENT3, /* copyup dirs */ + AuLsc_II_NEW_CHILD +}; + +/* + * ii_read_lock_child, ii_write_lock_child, + * ii_read_lock_child2, ii_write_lock_child2, + * ii_read_lock_child3, ii_write_lock_child3, + * ii_read_lock_parent, ii_write_lock_parent, + * ii_read_lock_parent2, ii_write_lock_parent2, + * ii_read_lock_parent3, ii_write_lock_parent3, + * ii_read_lock_new_child, ii_write_lock_new_child, + */ +#define AuReadLockFunc(name, lsc) \ +static inline void ii_read_lock_##name(struct inode *i) \ +{ \ + au_rw_read_lock_nested(&au_ii(i)->ii_rwsem, AuLsc_II_##lsc); \ +} + +#define AuWriteLockFunc(name, lsc) \ +static inline void ii_write_lock_##name(struct inode *i) \ +{ \ + au_rw_write_lock_nested(&au_ii(i)->ii_rwsem, AuLsc_II_##lsc); \ +} + +#define AuRWLockFuncs(name, lsc) \ + AuReadLockFunc(name, lsc) \ + AuWriteLockFunc(name, lsc) + +AuRWLockFuncs(child, CHILD); +AuRWLockFuncs(child2, CHILD2); +AuRWLockFuncs(child3, CHILD3); +AuRWLockFuncs(parent, PARENT); +AuRWLockFuncs(parent2, PARENT2); +AuRWLockFuncs(parent3, PARENT3); +AuRWLockFuncs(new_child, NEW_CHILD); + +#undef AuReadLockFunc +#undef AuWriteLockFunc +#undef AuRWLockFuncs + +#define ii_read_unlock(i) au_rw_read_unlock(&au_ii(i)->ii_rwsem) +#define ii_write_unlock(i) au_rw_write_unlock(&au_ii(i)->ii_rwsem) +#define ii_downgrade_lock(i) au_rw_dgrade_lock(&au_ii(i)->ii_rwsem) + +#define IiMustNoWaiters(i) AuRwMustNoWaiters(&au_ii(i)->ii_rwsem) +#define IiMustAnyLock(i) AuRwMustAnyLock(&au_ii(i)->ii_rwsem) +#define IiMustWriteLock(i) AuRwMustWriteLock(&au_ii(i)->ii_rwsem) + +/* ---------------------------------------------------------------------- */ + +static inline void au_icntnr_init(struct au_icntnr *c) +{ +#ifdef CONFIG_AUFS_DEBUG + c->vfs_inode.i_mode = 0; +#endif +} + +static inline unsigned int au_iigen(struct inode *inode, unsigned int *igflags) +{ + unsigned int gen; + struct au_iinfo *iinfo; + struct au_iigen *iigen; + + iinfo = au_ii(inode); + iigen = &iinfo->ii_generation; + spin_lock(&iigen->ig_spin); + if (igflags) + *igflags = iigen->ig_flags; + gen = iigen->ig_generation; + spin_unlock(&iigen->ig_spin); + + return gen; +} + +/* tiny test for inode number */ +/* tmpfs generation is too rough */ +static inline int au_test_higen(struct inode *inode, struct inode *h_inode) +{ + struct au_iinfo *iinfo; + + iinfo = au_ii(inode); + AuRwMustAnyLock(&iinfo->ii_rwsem); + return !(iinfo->ii_hsb1 == h_inode->i_sb + && iinfo->ii_higen == h_inode->i_generation); +} + +static inline void au_iigen_dec(struct inode *inode) +{ + struct au_iinfo *iinfo; + struct au_iigen *iigen; + + iinfo = au_ii(inode); + iigen = &iinfo->ii_generation; + spin_lock(&iigen->ig_spin); + iigen->ig_generation--; + spin_unlock(&iigen->ig_spin); +} + +static inline int au_iigen_test(struct inode *inode, unsigned int sigen) +{ + int err; + + err = 0; + if (unlikely(inode && au_iigen(inode, NULL) != sigen)) + err = -EIO; + + return err; +} + +/* ---------------------------------------------------------------------- */ + +static inline struct au_hinode *au_hinode(struct au_iinfo *iinfo, + aufs_bindex_t bindex) +{ + return iinfo->ii_hinode + bindex; +} + +static inline int au_is_bad_inode(struct inode *inode) +{ + return !!(is_bad_inode(inode) || !au_hinode(au_ii(inode), 0)); +} + +static inline aufs_bindex_t au_ii_br_id(struct inode *inode, + aufs_bindex_t bindex) +{ + IiMustAnyLock(inode); + return au_hinode(au_ii(inode), bindex)->hi_id; +} + +static inline aufs_bindex_t au_ibtop(struct inode *inode) +{ + IiMustAnyLock(inode); + return au_ii(inode)->ii_btop; +} + +static inline aufs_bindex_t au_ibbot(struct inode *inode) +{ + IiMustAnyLock(inode); + return au_ii(inode)->ii_bbot; +} + +static inline struct au_vdir *au_ivdir(struct inode *inode) +{ + IiMustAnyLock(inode); + return au_ii(inode)->ii_vdir; +} + +static inline struct dentry *au_hi_wh(struct inode *inode, aufs_bindex_t bindex) +{ + IiMustAnyLock(inode); + return au_hinode(au_ii(inode), bindex)->hi_whdentry; +} + +static inline void au_set_ibtop(struct inode *inode, aufs_bindex_t bindex) +{ + IiMustWriteLock(inode); + au_ii(inode)->ii_btop = bindex; +} + +static inline void au_set_ibbot(struct inode *inode, aufs_bindex_t bindex) +{ + IiMustWriteLock(inode); + au_ii(inode)->ii_bbot = bindex; +} + +static inline void au_set_ivdir(struct inode *inode, struct au_vdir *vdir) +{ + IiMustWriteLock(inode); + au_ii(inode)->ii_vdir = vdir; +} + +static inline struct au_hinode *au_hi(struct inode *inode, aufs_bindex_t bindex) +{ + IiMustAnyLock(inode); + return au_hinode(au_ii(inode), bindex); +} + +/* ---------------------------------------------------------------------- */ + +static inline struct dentry *au_pinned_parent(struct au_pin *pin) +{ + if (pin) + return pin->parent; + return NULL; +} + +static inline struct inode *au_pinned_h_dir(struct au_pin *pin) +{ + if (pin && pin->hdir) + return pin->hdir->hi_inode; + return NULL; +} + +static inline struct au_hinode *au_pinned_hdir(struct au_pin *pin) +{ + if (pin) + return pin->hdir; + return NULL; +} + +static inline void au_pin_set_dentry(struct au_pin *pin, struct dentry *dentry) +{ + if (pin) + pin->dentry = dentry; +} + +static inline void au_pin_set_parent_lflag(struct au_pin *pin, + unsigned char lflag) +{ + if (pin) { + if (lflag) + au_fset_pin(pin->flags, DI_LOCKED); + else + au_fclr_pin(pin->flags, DI_LOCKED); + } +} + +#if 0 /* reserved */ +static inline void au_pin_set_parent(struct au_pin *pin, struct dentry *parent) +{ + if (pin) { + dput(pin->parent); + pin->parent = dget(parent); + } +} +#endif + +/* ---------------------------------------------------------------------- */ + +struct au_branch; +#ifdef CONFIG_AUFS_HNOTIFY +struct au_hnotify_op { + void (*ctl)(struct au_hinode *hinode, int do_set); + int (*alloc)(struct au_hinode *hinode); + + /* + * if it returns true, the the caller should free hinode->hi_notify, + * otherwise ->free() frees it. + */ + int (*free)(struct au_hinode *hinode, + struct au_hnotify *hn) __must_check; + + void (*fin)(void); + int (*init)(void); + + int (*reset_br)(unsigned int udba, struct au_branch *br, int perm); + void (*fin_br)(struct au_branch *br); + int (*init_br)(struct au_branch *br, int perm); +}; + +/* hnotify.c */ +int au_hn_alloc(struct au_hinode *hinode, struct inode *inode); +void au_hn_free(struct au_hinode *hinode); +void au_hn_ctl(struct au_hinode *hinode, int do_set); +void au_hn_reset(struct inode *inode, unsigned int flags); +int au_hnotify(struct inode *h_dir, struct au_hnotify *hnotify, u32 mask, + struct qstr *h_child_qstr, struct inode *h_child_inode); +int au_hnotify_reset_br(unsigned int udba, struct au_branch *br, int perm); +int au_hnotify_init_br(struct au_branch *br, int perm); +void au_hnotify_fin_br(struct au_branch *br); +int __init au_hnotify_init(void); +void au_hnotify_fin(void); + +/* hfsnotify.c */ +extern const struct au_hnotify_op au_hnotify_op; + +static inline +void au_hn_init(struct au_hinode *hinode) +{ + hinode->hi_notify = NULL; +} + +static inline struct au_hnotify *au_hn(struct au_hinode *hinode) +{ + return hinode->hi_notify; +} + +#else +AuStub(int, au_hn_alloc, return -EOPNOTSUPP, + struct au_hinode *hinode __maybe_unused, + struct inode *inode __maybe_unused) +AuStub(struct au_hnotify *, au_hn, return NULL, struct au_hinode *hinode) +AuStubVoid(au_hn_free, struct au_hinode *hinode __maybe_unused) +AuStubVoid(au_hn_ctl, struct au_hinode *hinode __maybe_unused, + int do_set __maybe_unused) +AuStubVoid(au_hn_reset, struct inode *inode __maybe_unused, + unsigned int flags __maybe_unused) +AuStubInt0(au_hnotify_reset_br, unsigned int udba __maybe_unused, + struct au_branch *br __maybe_unused, + int perm __maybe_unused) +AuStubInt0(au_hnotify_init_br, struct au_branch *br __maybe_unused, + int perm __maybe_unused) +AuStubVoid(au_hnotify_fin_br, struct au_branch *br __maybe_unused) +AuStubInt0(__init au_hnotify_init, void) +AuStubVoid(au_hnotify_fin, void) +AuStubVoid(au_hn_init, struct au_hinode *hinode __maybe_unused) +#endif /* CONFIG_AUFS_HNOTIFY */ + +static inline void au_hn_suspend(struct au_hinode *hdir) +{ + au_hn_ctl(hdir, /*do_set*/0); +} + +static inline void au_hn_resume(struct au_hinode *hdir) +{ + au_hn_ctl(hdir, /*do_set*/1); +} + +static inline void au_hn_inode_lock(struct au_hinode *hdir) +{ + inode_lock(hdir->hi_inode); + au_hn_suspend(hdir); +} + +static inline void au_hn_inode_lock_nested(struct au_hinode *hdir, + unsigned int sc __maybe_unused) +{ + inode_lock_nested(hdir->hi_inode, sc); + au_hn_suspend(hdir); +} + +#if 0 /* unused */ +#include "vfsub.h" +static inline void au_hn_inode_lock_shared_nested(struct au_hinode *hdir, + unsigned int sc) +{ + vfsub_inode_lock_shared_nested(hdir->hi_inode, sc); + au_hn_suspend(hdir); +} +#endif + +static inline void au_hn_inode_unlock(struct au_hinode *hdir) +{ + au_hn_resume(hdir); + inode_unlock(hdir->hi_inode); +} + +#endif /* __KERNEL__ */ +#endif /* __AUFS_INODE_H__ */ diff --git a/include/fs/aufs/ioctl.c b/include/fs/aufs/ioctl.c new file mode 100644 index 00000000000..de188adb359 --- /dev/null +++ b/include/fs/aufs/ioctl.c @@ -0,0 +1,219 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * ioctl + * plink-management and readdir in userspace. + * assist the pathconf(3) wrapper library. + * move-down + * File-based Hierarchical Storage Management. + */ + +#include +#include +#include "aufs.h" + +static int au_wbr_fd(struct path *path, struct aufs_wbr_fd __user *arg) +{ + int err, fd; + aufs_bindex_t wbi, bindex, bbot; + struct file *h_file; + struct super_block *sb; + struct dentry *root; + struct au_branch *br; + struct aufs_wbr_fd wbrfd = { + .oflags = au_dir_roflags, + .brid = -1 + }; + const int valid = O_RDONLY | O_NONBLOCK | O_LARGEFILE | O_DIRECTORY + | O_NOATIME | O_CLOEXEC; + + AuDebugOn(wbrfd.oflags & ~valid); + + if (arg) { + err = copy_from_user(&wbrfd, arg, sizeof(wbrfd)); + if (unlikely(err)) { + err = -EFAULT; + goto out; + } + + err = -EINVAL; + AuDbg("wbrfd{0%o, %d}\n", wbrfd.oflags, wbrfd.brid); + wbrfd.oflags |= au_dir_roflags; + AuDbg("0%o\n", wbrfd.oflags); + if (unlikely(wbrfd.oflags & ~valid)) + goto out; + } + + fd = get_unused_fd_flags(0); + err = fd; + if (unlikely(fd < 0)) + goto out; + + h_file = ERR_PTR(-EINVAL); + wbi = 0; + br = NULL; + sb = path->dentry->d_sb; + root = sb->s_root; + aufs_read_lock(root, AuLock_IR); + bbot = au_sbbot(sb); + if (wbrfd.brid >= 0) { + wbi = au_br_index(sb, wbrfd.brid); + if (unlikely(wbi < 0 || wbi > bbot)) + goto out_unlock; + } + + h_file = ERR_PTR(-ENOENT); + br = au_sbr(sb, wbi); + if (!au_br_writable(br->br_perm)) { + if (arg) + goto out_unlock; + + bindex = wbi + 1; + wbi = -1; + for (; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + if (au_br_writable(br->br_perm)) { + wbi = bindex; + br = au_sbr(sb, wbi); + break; + } + } + } + AuDbg("wbi %d\n", wbi); + if (wbi >= 0) + h_file = au_h_open(root, wbi, wbrfd.oflags, NULL, + /*force_wr*/0); + +out_unlock: + aufs_read_unlock(root, AuLock_IR); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out_fd; + + au_br_put(br); /* cf. au_h_open() */ + fd_install(fd, h_file); + err = fd; + goto out; /* success */ + +out_fd: + put_unused_fd(fd); +out: + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +long aufs_ioctl_dir(struct file *file, unsigned int cmd, unsigned long arg) +{ + long err; + struct dentry *dentry; + + switch (cmd) { + case AUFS_CTL_RDU: + case AUFS_CTL_RDU_INO: + err = au_rdu_ioctl(file, cmd, arg); + break; + + case AUFS_CTL_WBR_FD: + err = au_wbr_fd(&file->f_path, (void __user *)arg); + break; + + case AUFS_CTL_IBUSY: + err = au_ibusy_ioctl(file, arg); + break; + + case AUFS_CTL_BRINFO: + err = au_brinfo_ioctl(file, arg); + break; + + case AUFS_CTL_FHSM_FD: + dentry = file->f_path.dentry; + if (IS_ROOT(dentry)) + err = au_fhsm_fd(dentry->d_sb, arg); + else + err = -ENOTTY; + break; + + default: + /* do not call the lower */ + AuDbg("0x%x\n", cmd); + err = -ENOTTY; + } + + AuTraceErr(err); + return err; +} + +long aufs_ioctl_nondir(struct file *file, unsigned int cmd, unsigned long arg) +{ + long err; + + switch (cmd) { + case AUFS_CTL_MVDOWN: + err = au_mvdown(file->f_path.dentry, (void __user *)arg); + break; + + case AUFS_CTL_WBR_FD: + err = au_wbr_fd(&file->f_path, (void __user *)arg); + break; + + default: + /* do not call the lower */ + AuDbg("0x%x\n", cmd); + err = -ENOTTY; + } + + AuTraceErr(err); + return err; +} + +#ifdef CONFIG_COMPAT +long aufs_compat_ioctl_dir(struct file *file, unsigned int cmd, + unsigned long arg) +{ + long err; + + switch (cmd) { + case AUFS_CTL_RDU: + case AUFS_CTL_RDU_INO: + err = au_rdu_compat_ioctl(file, cmd, arg); + break; + + case AUFS_CTL_IBUSY: + err = au_ibusy_compat_ioctl(file, arg); + break; + + case AUFS_CTL_BRINFO: + err = au_brinfo_compat_ioctl(file, arg); + break; + + default: + err = aufs_ioctl_dir(file, cmd, arg); + } + + AuTraceErr(err); + return err; +} + +long aufs_compat_ioctl_nondir(struct file *file, unsigned int cmd, + unsigned long arg) +{ + return aufs_ioctl_nondir(file, cmd, (unsigned long)compat_ptr(arg)); +} +#endif diff --git a/include/fs/aufs/loop.c b/include/fs/aufs/loop.c new file mode 100644 index 00000000000..983ef98762f --- /dev/null +++ b/include/fs/aufs/loop.c @@ -0,0 +1,147 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * support for loopback block device as a branch + */ + +#include "aufs.h" + +/* added into drivers/block/loop.c */ +static struct file *(*backing_file_func)(struct super_block *sb); + +/* + * test if two lower dentries have overlapping branches. + */ +int au_test_loopback_overlap(struct super_block *sb, struct dentry *h_adding) +{ + struct super_block *h_sb; + struct file *backing_file; + + if (unlikely(!backing_file_func)) { + /* don't load "loop" module here */ + backing_file_func = symbol_get(loop_backing_file); + if (unlikely(!backing_file_func)) + /* "loop" module is not loaded */ + return 0; + } + + h_sb = h_adding->d_sb; + backing_file = backing_file_func(h_sb); + if (!backing_file) + return 0; + + h_adding = backing_file->f_path.dentry; + /* + * h_adding can be local NFS. + * in this case aufs cannot detect the loop. + */ + if (unlikely(h_adding->d_sb == sb)) + return 1; + return !!au_test_subdir(h_adding, sb->s_root); +} + +/* true if a kernel thread named 'loop[0-9].*' accesses a file */ +int au_test_loopback_kthread(void) +{ + int ret; + struct task_struct *tsk = current; + char c, comm[sizeof(tsk->comm)]; + + ret = 0; + if (tsk->flags & PF_KTHREAD) { + get_task_comm(comm, tsk); + c = comm[4]; + ret = ('0' <= c && c <= '9' + && !strncmp(comm, "loop", 4)); + } + + return ret; +} + +/* ---------------------------------------------------------------------- */ + +#define au_warn_loopback_step 16 +static int au_warn_loopback_nelem = au_warn_loopback_step; +static unsigned long *au_warn_loopback_array; + +void au_warn_loopback(struct super_block *h_sb) +{ + int i, new_nelem; + unsigned long *a, magic; + static DEFINE_SPINLOCK(spin); + + magic = h_sb->s_magic; + spin_lock(&spin); + a = au_warn_loopback_array; + for (i = 0; i < au_warn_loopback_nelem && *a; i++) + if (a[i] == magic) { + spin_unlock(&spin); + return; + } + + /* h_sb is new to us, print it */ + if (i < au_warn_loopback_nelem) { + a[i] = magic; + goto pr; + } + + /* expand the array */ + new_nelem = au_warn_loopback_nelem + au_warn_loopback_step; + a = au_kzrealloc(au_warn_loopback_array, + au_warn_loopback_nelem * sizeof(unsigned long), + new_nelem * sizeof(unsigned long), GFP_ATOMIC, + /*may_shrink*/0); + if (a) { + au_warn_loopback_nelem = new_nelem; + au_warn_loopback_array = a; + a[i] = magic; + goto pr; + } + + spin_unlock(&spin); + AuWarn1("realloc failed, ignored\n"); + return; + +pr: + spin_unlock(&spin); + pr_warn("you may want to try another patch for loopback file " + "on %s(0x%lx) branch\n", au_sbtype(h_sb), magic); +} + +int au_loopback_init(void) +{ + int err; + struct super_block *sb __maybe_unused; + + BUILD_BUG_ON(sizeof(sb->s_magic) != sizeof(unsigned long)); + + err = 0; + au_warn_loopback_array = kcalloc(au_warn_loopback_step, + sizeof(unsigned long), GFP_NOFS); + if (unlikely(!au_warn_loopback_array)) + err = -ENOMEM; + + return err; +} + +void au_loopback_fin(void) +{ + if (backing_file_func) + symbol_put(loop_backing_file); + kfree(au_warn_loopback_array); +} diff --git a/include/fs/aufs/loop.h b/include/fs/aufs/loop.h new file mode 100644 index 00000000000..e6b76609a4b --- /dev/null +++ b/include/fs/aufs/loop.h @@ -0,0 +1,52 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * support for loopback mount as a branch + */ + +#ifndef __AUFS_LOOP_H__ +#define __AUFS_LOOP_H__ + +#ifdef __KERNEL__ + +struct dentry; +struct super_block; + +#ifdef CONFIG_AUFS_BDEV_LOOP +/* drivers/block/loop.c */ +struct file *loop_backing_file(struct super_block *sb); + +/* loop.c */ +int au_test_loopback_overlap(struct super_block *sb, struct dentry *h_adding); +int au_test_loopback_kthread(void); +void au_warn_loopback(struct super_block *h_sb); + +int au_loopback_init(void); +void au_loopback_fin(void); +#else +AuStubInt0(au_test_loopback_overlap, struct super_block *sb, + struct dentry *h_adding) +AuStubInt0(au_test_loopback_kthread, void) +AuStubVoid(au_warn_loopback, struct super_block *h_sb) + +AuStubInt0(au_loopback_init, void) +AuStubVoid(au_loopback_fin, void) +#endif /* BLK_DEV_LOOP */ + +#endif /* __KERNEL__ */ +#endif /* __AUFS_LOOP_H__ */ diff --git a/include/fs/aufs/magic.mk b/include/fs/aufs/magic.mk new file mode 100644 index 00000000000..7bc9eef3ffe --- /dev/null +++ b/include/fs/aufs/magic.mk @@ -0,0 +1,31 @@ +# SPDX-License-Identifier: GPL-2.0 + +# defined in ${srctree}/fs/fuse/inode.c +# tristate +ifdef CONFIG_FUSE_FS +ccflags-y += -DFUSE_SUPER_MAGIC=0x65735546 +endif + +# defined in ${srctree}/fs/xfs/xfs_sb.h +# tristate +ifdef CONFIG_XFS_FS +ccflags-y += -DXFS_SB_MAGIC=0x58465342 +endif + +# defined in ${srctree}/fs/configfs/mount.c +# tristate +ifdef CONFIG_CONFIGFS_FS +ccflags-y += -DCONFIGFS_MAGIC=0x62656570 +endif + +# defined in ${srctree}/fs/ubifs/ubifs.h +# tristate +ifdef CONFIG_UBIFS_FS +ccflags-y += -DUBIFS_SUPER_MAGIC=0x24051905 +endif + +# defined in ${srctree}/fs/hfsplus/hfsplus_raw.h +# tristate +ifdef CONFIG_HFSPLUS_FS +ccflags-y += -DHFSPLUS_SUPER_MAGIC=0x482b +endif diff --git a/include/fs/aufs/module.c b/include/fs/aufs/module.c new file mode 100644 index 00000000000..9eeec710ae5 --- /dev/null +++ b/include/fs/aufs/module.c @@ -0,0 +1,266 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * module global variables and operations + */ + +#include +#include +#include "aufs.h" + +/* shrinkable realloc */ +void *au_krealloc(void *p, unsigned int new_sz, gfp_t gfp, int may_shrink) +{ + size_t sz; + int diff; + + sz = 0; + diff = -1; + if (p) { +#if 0 /* unused */ + if (!new_sz) { + kfree(p); + p = NULL; + goto out; + } +#else + AuDebugOn(!new_sz); +#endif + sz = ksize(p); + diff = au_kmidx_sub(sz, new_sz); + } + if (sz && !diff) + goto out; + + if (sz < new_sz) + /* expand or SLOB */ + p = krealloc(p, new_sz, gfp); + else if (new_sz < sz && may_shrink) { + /* shrink */ + void *q; + + q = kmalloc(new_sz, gfp); + if (q) { + if (p) { + memcpy(q, p, new_sz); + kfree(p); + } + p = q; + } else + p = NULL; + } + +out: + return p; +} + +void *au_kzrealloc(void *p, unsigned int nused, unsigned int new_sz, gfp_t gfp, + int may_shrink) +{ + p = au_krealloc(p, new_sz, gfp, may_shrink); + if (p && new_sz > nused) + memset(p + nused, 0, new_sz - nused); + return p; +} + +/* ---------------------------------------------------------------------- */ +/* + * aufs caches + */ +struct kmem_cache *au_cache[AuCache_Last]; + +static void au_cache_fin(void) +{ + int i; + + /* + * Make sure all delayed rcu free inodes are flushed before we + * destroy cache. + */ + rcu_barrier(); + + /* excluding AuCache_HNOTIFY */ + BUILD_BUG_ON(AuCache_HNOTIFY + 1 != AuCache_Last); + for (i = 0; i < AuCache_HNOTIFY; i++) { + kmem_cache_destroy(au_cache[i]); + au_cache[i] = NULL; + } +} + +static int __init au_cache_init(void) +{ + au_cache[AuCache_DINFO] = AuCacheCtor(au_dinfo, au_di_init_once); + if (au_cache[AuCache_DINFO]) + /* SLAB_DESTROY_BY_RCU */ + au_cache[AuCache_ICNTNR] = AuCacheCtor(au_icntnr, + au_icntnr_init_once); + if (au_cache[AuCache_ICNTNR]) + au_cache[AuCache_FINFO] = AuCacheCtor(au_finfo, + au_fi_init_once); + if (au_cache[AuCache_FINFO]) + au_cache[AuCache_VDIR] = AuCache(au_vdir); + if (au_cache[AuCache_VDIR]) + au_cache[AuCache_DEHSTR] = AuCache(au_vdir_dehstr); + if (au_cache[AuCache_DEHSTR]) + return 0; + + au_cache_fin(); + return -ENOMEM; +} + +/* ---------------------------------------------------------------------- */ + +int au_dir_roflags; + +#ifdef CONFIG_AUFS_SBILIST +/* + * iterate_supers_type() doesn't protect us from + * remounting (branch management) + */ +struct hlist_bl_head au_sbilist; +#endif + +/* + * functions for module interface. + */ +MODULE_LICENSE("GPL"); +/* MODULE_LICENSE("GPL v2"); */ +MODULE_AUTHOR("Junjiro R. Okajima "); +MODULE_DESCRIPTION(AUFS_NAME + " -- Advanced multi layered unification filesystem"); +MODULE_VERSION(AUFS_VERSION); +MODULE_ALIAS_FS(AUFS_NAME); + +/* this module parameter has no meaning when SYSFS is disabled */ +int sysaufs_brs = 1; +MODULE_PARM_DESC(brs, "use /fs/aufs/si_*/brN"); +module_param_named(brs, sysaufs_brs, int, S_IRUGO); + +/* this module parameter has no meaning when USER_NS is disabled */ +bool au_userns; +MODULE_PARM_DESC(allow_userns, "allow unprivileged to mount under userns"); +module_param_named(allow_userns, au_userns, bool, S_IRUGO); + +/* ---------------------------------------------------------------------- */ + +static char au_esc_chars[0x20 + 3]; /* 0x01-0x20, backslash, del, and NULL */ + +int au_seq_path(struct seq_file *seq, struct path *path) +{ + int err; + + err = seq_path(seq, path, au_esc_chars); + if (err >= 0) + err = 0; + else + err = -ENOMEM; + + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int __init aufs_init(void) +{ + int err, i; + char *p; + + p = au_esc_chars; + for (i = 1; i <= ' '; i++) + *p++ = i; + *p++ = '\\'; + *p++ = '\x7f'; + *p = 0; + + au_dir_roflags = au_file_roflags(O_DIRECTORY | O_LARGEFILE); + + memcpy(aufs_iop_nogetattr, aufs_iop, sizeof(aufs_iop)); + for (i = 0; i < AuIop_Last; i++) + aufs_iop_nogetattr[i].getattr = NULL; + + memset(au_cache, 0, sizeof(au_cache)); /* including hnotify */ + + au_sbilist_init(); + sysaufs_brs_init(); + au_debug_init(); + au_dy_init(); + err = sysaufs_init(); + if (unlikely(err)) + goto out; + err = au_procfs_init(); + if (unlikely(err)) + goto out_sysaufs; + err = au_wkq_init(); + if (unlikely(err)) + goto out_procfs; + err = au_loopback_init(); + if (unlikely(err)) + goto out_wkq; + err = au_hnotify_init(); + if (unlikely(err)) + goto out_loopback; + err = au_sysrq_init(); + if (unlikely(err)) + goto out_hin; + err = au_cache_init(); + if (unlikely(err)) + goto out_sysrq; + + aufs_fs_type.fs_flags |= au_userns ? FS_USERNS_MOUNT : 0; + err = register_filesystem(&aufs_fs_type); + if (unlikely(err)) + goto out_cache; + + /* since we define pr_fmt, call printk directly */ + printk(KERN_INFO AUFS_NAME " " AUFS_VERSION "\n"); + goto out; /* success */ + +out_cache: + au_cache_fin(); +out_sysrq: + au_sysrq_fin(); +out_hin: + au_hnotify_fin(); +out_loopback: + au_loopback_fin(); +out_wkq: + au_wkq_fin(); +out_procfs: + au_procfs_fin(); +out_sysaufs: + sysaufs_fin(); + au_dy_fin(); +out: + return err; +} + +static void __exit aufs_exit(void) +{ + unregister_filesystem(&aufs_fs_type); + au_cache_fin(); + au_sysrq_fin(); + au_hnotify_fin(); + au_loopback_fin(); + au_wkq_fin(); + au_procfs_fin(); + sysaufs_fin(); + au_dy_fin(); +} + +module_init(aufs_init); +module_exit(aufs_exit); diff --git a/include/fs/aufs/module.h b/include/fs/aufs/module.h new file mode 100644 index 00000000000..6d222d1c654 --- /dev/null +++ b/include/fs/aufs/module.h @@ -0,0 +1,101 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * module initialization and module-global + */ + +#ifndef __AUFS_MODULE_H__ +#define __AUFS_MODULE_H__ + +#ifdef __KERNEL__ + +#include + +struct path; +struct seq_file; + +/* module parameters */ +extern int sysaufs_brs; +extern bool au_userns; + +/* ---------------------------------------------------------------------- */ + +extern int au_dir_roflags; + +void *au_krealloc(void *p, unsigned int new_sz, gfp_t gfp, int may_shrink); +void *au_kzrealloc(void *p, unsigned int nused, unsigned int new_sz, gfp_t gfp, + int may_shrink); + +static inline int au_kmidx_sub(size_t sz, size_t new_sz) +{ +#ifndef CONFIG_SLOB + return kmalloc_index(sz) - kmalloc_index(new_sz); +#else + return -1; /* SLOB is untested */ +#endif +} + +int au_seq_path(struct seq_file *seq, struct path *path); + +#ifdef CONFIG_PROC_FS +/* procfs.c */ +int __init au_procfs_init(void); +void au_procfs_fin(void); +#else +AuStubInt0(au_procfs_init, void); +AuStubVoid(au_procfs_fin, void); +#endif + +/* ---------------------------------------------------------------------- */ + +/* kmem cache */ +enum { + AuCache_DINFO, + AuCache_ICNTNR, + AuCache_FINFO, + AuCache_VDIR, + AuCache_DEHSTR, + AuCache_HNOTIFY, /* must be last */ + AuCache_Last +}; + +extern struct kmem_cache *au_cache[AuCache_Last]; + +#define AuCacheFlags (SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD) +#define AuCache(type) KMEM_CACHE(type, AuCacheFlags) +#define AuCacheCtor(type, ctor) \ + kmem_cache_create(#type, sizeof(struct type), \ + __alignof__(struct type), AuCacheFlags, ctor) + +#define AuCacheFuncs(name, index) \ +static inline struct au_##name *au_cache_alloc_##name(void) \ +{ return kmem_cache_alloc(au_cache[AuCache_##index], GFP_NOFS); } \ +static inline void au_cache_free_##name(struct au_##name *p) \ +{ kmem_cache_free(au_cache[AuCache_##index], p); } + +AuCacheFuncs(dinfo, DINFO); +AuCacheFuncs(icntnr, ICNTNR); +AuCacheFuncs(finfo, FINFO); +AuCacheFuncs(vdir, VDIR); +AuCacheFuncs(vdir_dehstr, DEHSTR); +#ifdef CONFIG_AUFS_HNOTIFY +AuCacheFuncs(hnotify, HNOTIFY); +#endif + +#endif /* __KERNEL__ */ +#endif /* __AUFS_MODULE_H__ */ diff --git a/include/fs/aufs/mvdown.c b/include/fs/aufs/mvdown.c new file mode 100644 index 00000000000..b51219658aa --- /dev/null +++ b/include/fs/aufs/mvdown.c @@ -0,0 +1,704 @@ +/* + * Copyright (C) 2011-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * move-down, opposite of copy-up + */ + +#include "aufs.h" + +struct au_mvd_args { + struct { + struct super_block *h_sb; + struct dentry *h_parent; + struct au_hinode *hdir; + struct inode *h_dir, *h_inode; + struct au_pin pin; + } info[AUFS_MVDOWN_NARRAY]; + + struct aufs_mvdown mvdown; + struct dentry *dentry, *parent; + struct inode *inode, *dir; + struct super_block *sb; + aufs_bindex_t bopq, bwh, bfound; + unsigned char rename_lock; +}; + +#define mvd_errno mvdown.au_errno +#define mvd_bsrc mvdown.stbr[AUFS_MVDOWN_UPPER].bindex +#define mvd_src_brid mvdown.stbr[AUFS_MVDOWN_UPPER].brid +#define mvd_bdst mvdown.stbr[AUFS_MVDOWN_LOWER].bindex +#define mvd_dst_brid mvdown.stbr[AUFS_MVDOWN_LOWER].brid + +#define mvd_h_src_sb info[AUFS_MVDOWN_UPPER].h_sb +#define mvd_h_src_parent info[AUFS_MVDOWN_UPPER].h_parent +#define mvd_hdir_src info[AUFS_MVDOWN_UPPER].hdir +#define mvd_h_src_dir info[AUFS_MVDOWN_UPPER].h_dir +#define mvd_h_src_inode info[AUFS_MVDOWN_UPPER].h_inode +#define mvd_pin_src info[AUFS_MVDOWN_UPPER].pin + +#define mvd_h_dst_sb info[AUFS_MVDOWN_LOWER].h_sb +#define mvd_h_dst_parent info[AUFS_MVDOWN_LOWER].h_parent +#define mvd_hdir_dst info[AUFS_MVDOWN_LOWER].hdir +#define mvd_h_dst_dir info[AUFS_MVDOWN_LOWER].h_dir +#define mvd_h_dst_inode info[AUFS_MVDOWN_LOWER].h_inode +#define mvd_pin_dst info[AUFS_MVDOWN_LOWER].pin + +#define AU_MVD_PR(flag, ...) do { \ + if (flag) \ + pr_err(__VA_ARGS__); \ + } while (0) + +static int find_lower_writable(struct au_mvd_args *a) +{ + struct super_block *sb; + aufs_bindex_t bindex, bbot; + struct au_branch *br; + + sb = a->sb; + bindex = a->mvd_bsrc; + bbot = au_sbbot(sb); + if (a->mvdown.flags & AUFS_MVDOWN_FHSM_LOWER) + for (bindex++; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + if (au_br_fhsm(br->br_perm) + && !sb_rdonly(au_br_sb(br))) + return bindex; + } + else if (!(a->mvdown.flags & AUFS_MVDOWN_ROLOWER)) + for (bindex++; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + if (!au_br_rdonly(br)) + return bindex; + } + else + for (bindex++; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + if (!sb_rdonly(au_br_sb(br))) { + if (au_br_rdonly(br)) + a->mvdown.flags + |= AUFS_MVDOWN_ROLOWER_R; + return bindex; + } + } + + return -1; +} + +/* make the parent dir on bdst */ +static int au_do_mkdir(const unsigned char dmsg, struct au_mvd_args *a) +{ + int err; + + err = 0; + a->mvd_hdir_src = au_hi(a->dir, a->mvd_bsrc); + a->mvd_hdir_dst = au_hi(a->dir, a->mvd_bdst); + a->mvd_h_src_parent = au_h_dptr(a->parent, a->mvd_bsrc); + a->mvd_h_dst_parent = NULL; + if (au_dbbot(a->parent) >= a->mvd_bdst) + a->mvd_h_dst_parent = au_h_dptr(a->parent, a->mvd_bdst); + if (!a->mvd_h_dst_parent) { + err = au_cpdown_dirs(a->dentry, a->mvd_bdst); + if (unlikely(err)) { + AU_MVD_PR(dmsg, "cpdown_dirs failed\n"); + goto out; + } + a->mvd_h_dst_parent = au_h_dptr(a->parent, a->mvd_bdst); + } + +out: + AuTraceErr(err); + return err; +} + +/* lock them all */ +static int au_do_lock(const unsigned char dmsg, struct au_mvd_args *a) +{ + int err; + struct dentry *h_trap; + + a->mvd_h_src_sb = au_sbr_sb(a->sb, a->mvd_bsrc); + a->mvd_h_dst_sb = au_sbr_sb(a->sb, a->mvd_bdst); + err = au_pin(&a->mvd_pin_dst, a->dentry, a->mvd_bdst, + au_opt_udba(a->sb), + AuPin_MNT_WRITE | AuPin_DI_LOCKED); + AuTraceErr(err); + if (unlikely(err)) { + AU_MVD_PR(dmsg, "pin_dst failed\n"); + goto out; + } + + if (a->mvd_h_src_sb != a->mvd_h_dst_sb) { + a->rename_lock = 0; + au_pin_init(&a->mvd_pin_src, a->dentry, a->mvd_bsrc, + AuLsc_DI_PARENT, AuLsc_I_PARENT3, + au_opt_udba(a->sb), + AuPin_MNT_WRITE | AuPin_DI_LOCKED); + err = au_do_pin(&a->mvd_pin_src); + AuTraceErr(err); + a->mvd_h_src_dir = d_inode(a->mvd_h_src_parent); + if (unlikely(err)) { + AU_MVD_PR(dmsg, "pin_src failed\n"); + goto out_dst; + } + goto out; /* success */ + } + + a->rename_lock = 1; + au_pin_hdir_unlock(&a->mvd_pin_dst); + err = au_pin(&a->mvd_pin_src, a->dentry, a->mvd_bsrc, + au_opt_udba(a->sb), + AuPin_MNT_WRITE | AuPin_DI_LOCKED); + AuTraceErr(err); + a->mvd_h_src_dir = d_inode(a->mvd_h_src_parent); + if (unlikely(err)) { + AU_MVD_PR(dmsg, "pin_src failed\n"); + au_pin_hdir_lock(&a->mvd_pin_dst); + goto out_dst; + } + au_pin_hdir_unlock(&a->mvd_pin_src); + h_trap = vfsub_lock_rename(a->mvd_h_src_parent, a->mvd_hdir_src, + a->mvd_h_dst_parent, a->mvd_hdir_dst); + if (h_trap) { + err = (h_trap != a->mvd_h_src_parent); + if (err) + err = (h_trap != a->mvd_h_dst_parent); + } + BUG_ON(err); /* it should never happen */ + if (unlikely(a->mvd_h_src_dir != au_pinned_h_dir(&a->mvd_pin_src))) { + err = -EBUSY; + AuTraceErr(err); + vfsub_unlock_rename(a->mvd_h_src_parent, a->mvd_hdir_src, + a->mvd_h_dst_parent, a->mvd_hdir_dst); + au_pin_hdir_lock(&a->mvd_pin_src); + au_unpin(&a->mvd_pin_src); + au_pin_hdir_lock(&a->mvd_pin_dst); + goto out_dst; + } + goto out; /* success */ + +out_dst: + au_unpin(&a->mvd_pin_dst); +out: + AuTraceErr(err); + return err; +} + +static void au_do_unlock(const unsigned char dmsg, struct au_mvd_args *a) +{ + if (!a->rename_lock) + au_unpin(&a->mvd_pin_src); + else { + vfsub_unlock_rename(a->mvd_h_src_parent, a->mvd_hdir_src, + a->mvd_h_dst_parent, a->mvd_hdir_dst); + au_pin_hdir_lock(&a->mvd_pin_src); + au_unpin(&a->mvd_pin_src); + au_pin_hdir_lock(&a->mvd_pin_dst); + } + au_unpin(&a->mvd_pin_dst); +} + +/* copy-down the file */ +static int au_do_cpdown(const unsigned char dmsg, struct au_mvd_args *a) +{ + int err; + struct au_cp_generic cpg = { + .dentry = a->dentry, + .bdst = a->mvd_bdst, + .bsrc = a->mvd_bsrc, + .len = -1, + .pin = &a->mvd_pin_dst, + .flags = AuCpup_DTIME | AuCpup_HOPEN + }; + + AuDbg("b%d, b%d\n", cpg.bsrc, cpg.bdst); + if (a->mvdown.flags & AUFS_MVDOWN_OWLOWER) + au_fset_cpup(cpg.flags, OVERWRITE); + if (a->mvdown.flags & AUFS_MVDOWN_ROLOWER) + au_fset_cpup(cpg.flags, RWDST); + err = au_sio_cpdown_simple(&cpg); + if (unlikely(err)) + AU_MVD_PR(dmsg, "cpdown failed\n"); + + AuTraceErr(err); + return err; +} + +/* + * unlink the whiteout on bdst if exist which may be created by UDBA while we + * were sleeping + */ +static int au_do_unlink_wh(const unsigned char dmsg, struct au_mvd_args *a) +{ + int err; + struct path h_path; + struct au_branch *br; + struct inode *delegated; + + br = au_sbr(a->sb, a->mvd_bdst); + h_path.dentry = au_wh_lkup(a->mvd_h_dst_parent, &a->dentry->d_name, br); + err = PTR_ERR(h_path.dentry); + if (IS_ERR(h_path.dentry)) { + AU_MVD_PR(dmsg, "wh_lkup failed\n"); + goto out; + } + + err = 0; + if (d_is_positive(h_path.dentry)) { + h_path.mnt = au_br_mnt(br); + delegated = NULL; + err = vfsub_unlink(d_inode(a->mvd_h_dst_parent), &h_path, + &delegated, /*force*/0); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal unlink\n"); + iput(delegated); + } + if (unlikely(err)) + AU_MVD_PR(dmsg, "wh_unlink failed\n"); + } + dput(h_path.dentry); + +out: + AuTraceErr(err); + return err; +} + +/* + * unlink the topmost h_dentry + */ +static int au_do_unlink(const unsigned char dmsg, struct au_mvd_args *a) +{ + int err; + struct path h_path; + struct inode *delegated; + + h_path.mnt = au_sbr_mnt(a->sb, a->mvd_bsrc); + h_path.dentry = au_h_dptr(a->dentry, a->mvd_bsrc); + delegated = NULL; + err = vfsub_unlink(a->mvd_h_src_dir, &h_path, &delegated, /*force*/0); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal unlink\n"); + iput(delegated); + } + if (unlikely(err)) + AU_MVD_PR(dmsg, "unlink failed\n"); + + AuTraceErr(err); + return err; +} + +/* Since mvdown succeeded, we ignore an error of this function */ +static void au_do_stfs(const unsigned char dmsg, struct au_mvd_args *a) +{ + int err; + struct au_branch *br; + + a->mvdown.flags |= AUFS_MVDOWN_STFS_FAILED; + br = au_sbr(a->sb, a->mvd_bsrc); + err = au_br_stfs(br, &a->mvdown.stbr[AUFS_MVDOWN_UPPER].stfs); + if (!err) { + br = au_sbr(a->sb, a->mvd_bdst); + a->mvdown.stbr[AUFS_MVDOWN_LOWER].brid = br->br_id; + err = au_br_stfs(br, &a->mvdown.stbr[AUFS_MVDOWN_LOWER].stfs); + } + if (!err) + a->mvdown.flags &= ~AUFS_MVDOWN_STFS_FAILED; + else + AU_MVD_PR(dmsg, "statfs failed (%d), ignored\n", err); +} + +/* + * copy-down the file and unlink the bsrc file. + * - unlink the bdst whout if exist + * - copy-down the file (with whtmp name and rename) + * - unlink the bsrc file + */ +static int au_do_mvdown(const unsigned char dmsg, struct au_mvd_args *a) +{ + int err; + + err = au_do_mkdir(dmsg, a); + if (!err) + err = au_do_lock(dmsg, a); + if (unlikely(err)) + goto out; + + /* + * do not revert the activities we made on bdst since they should be + * harmless in aufs. + */ + + err = au_do_cpdown(dmsg, a); + if (!err) + err = au_do_unlink_wh(dmsg, a); + if (!err && !(a->mvdown.flags & AUFS_MVDOWN_KUPPER)) + err = au_do_unlink(dmsg, a); + if (unlikely(err)) + goto out_unlock; + + AuDbg("%pd2, 0x%x, %d --> %d\n", + a->dentry, a->mvdown.flags, a->mvd_bsrc, a->mvd_bdst); + if (find_lower_writable(a) < 0) + a->mvdown.flags |= AUFS_MVDOWN_BOTTOM; + + if (a->mvdown.flags & AUFS_MVDOWN_STFS) + au_do_stfs(dmsg, a); + + /* maintain internal array */ + if (!(a->mvdown.flags & AUFS_MVDOWN_KUPPER)) { + au_set_h_dptr(a->dentry, a->mvd_bsrc, NULL); + au_set_dbtop(a->dentry, a->mvd_bdst); + au_set_h_iptr(a->inode, a->mvd_bsrc, NULL, /*flags*/0); + au_set_ibtop(a->inode, a->mvd_bdst); + } else { + /* hide the lower */ + au_set_h_dptr(a->dentry, a->mvd_bdst, NULL); + au_set_dbbot(a->dentry, a->mvd_bsrc); + au_set_h_iptr(a->inode, a->mvd_bdst, NULL, /*flags*/0); + au_set_ibbot(a->inode, a->mvd_bsrc); + } + if (au_dbbot(a->dentry) < a->mvd_bdst) + au_set_dbbot(a->dentry, a->mvd_bdst); + if (au_ibbot(a->inode) < a->mvd_bdst) + au_set_ibbot(a->inode, a->mvd_bdst); + +out_unlock: + au_do_unlock(dmsg, a); +out: + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* make sure the file is idle */ +static int au_mvd_args_busy(const unsigned char dmsg, struct au_mvd_args *a) +{ + int err, plinked; + + err = 0; + plinked = !!au_opt_test(au_mntflags(a->sb), PLINK); + if (au_dbtop(a->dentry) == a->mvd_bsrc + && au_dcount(a->dentry) == 1 + && atomic_read(&a->inode->i_count) == 1 + /* && a->mvd_h_src_inode->i_nlink == 1 */ + && (!plinked || !au_plink_test(a->inode)) + && a->inode->i_nlink == 1) + goto out; + + err = -EBUSY; + AU_MVD_PR(dmsg, + "b%d, d{b%d, c%d?}, i{c%d?, l%u}, hi{l%u}, p{%d, %d}\n", + a->mvd_bsrc, au_dbtop(a->dentry), au_dcount(a->dentry), + atomic_read(&a->inode->i_count), a->inode->i_nlink, + a->mvd_h_src_inode->i_nlink, + plinked, plinked ? au_plink_test(a->inode) : 0); + +out: + AuTraceErr(err); + return err; +} + +/* make sure the parent dir is fine */ +static int au_mvd_args_parent(const unsigned char dmsg, + struct au_mvd_args *a) +{ + int err; + aufs_bindex_t bindex; + + err = 0; + if (unlikely(au_alive_dir(a->parent))) { + err = -ENOENT; + AU_MVD_PR(dmsg, "parent dir is dead\n"); + goto out; + } + + a->bopq = au_dbdiropq(a->parent); + bindex = au_wbr_nonopq(a->dentry, a->mvd_bdst); + AuDbg("b%d\n", bindex); + if (unlikely((bindex >= 0 && bindex < a->mvd_bdst) + || (a->bopq != -1 && a->bopq < a->mvd_bdst))) { + err = -EINVAL; + a->mvd_errno = EAU_MVDOWN_OPAQUE; + AU_MVD_PR(dmsg, "ancestor is opaque b%d, b%d\n", + a->bopq, a->mvd_bdst); + } + +out: + AuTraceErr(err); + return err; +} + +static int au_mvd_args_intermediate(const unsigned char dmsg, + struct au_mvd_args *a) +{ + int err; + struct au_dinfo *dinfo, *tmp; + + /* lookup the next lower positive entry */ + err = -ENOMEM; + tmp = au_di_alloc(a->sb, AuLsc_DI_TMP); + if (unlikely(!tmp)) + goto out; + + a->bfound = -1; + a->bwh = -1; + dinfo = au_di(a->dentry); + au_di_cp(tmp, dinfo); + au_di_swap(tmp, dinfo); + + /* returns the number of positive dentries */ + err = au_lkup_dentry(a->dentry, a->mvd_bsrc + 1, + /* AuLkup_IGNORE_PERM */ 0); + if (!err) + a->bwh = au_dbwh(a->dentry); + else if (err > 0) + a->bfound = au_dbtop(a->dentry); + + au_di_swap(tmp, dinfo); + au_rw_write_unlock(&tmp->di_rwsem); + au_di_free(tmp); + if (unlikely(err < 0)) + AU_MVD_PR(dmsg, "failed look-up lower\n"); + + /* + * here, we have these cases. + * bfound == -1 + * no positive dentry under bsrc. there are more sub-cases. + * bwh < 0 + * there no whiteout, we can safely move-down. + * bwh <= bsrc + * impossible + * bsrc < bwh && bwh < bdst + * there is a whiteout on RO branch. cannot proceed. + * bwh == bdst + * there is a whiteout on the RW target branch. it should + * be removed. + * bdst < bwh + * there is a whiteout somewhere unrelated branch. + * -1 < bfound && bfound <= bsrc + * impossible. + * bfound < bdst + * found, but it is on RO branch between bsrc and bdst. cannot + * proceed. + * bfound == bdst + * found, replace it if AUFS_MVDOWN_FORCE is set. otherwise return + * error. + * bdst < bfound + * found, after we create the file on bdst, it will be hidden. + */ + + AuDebugOn(a->bfound == -1 + && a->bwh != -1 + && a->bwh <= a->mvd_bsrc); + AuDebugOn(-1 < a->bfound + && a->bfound <= a->mvd_bsrc); + + err = -EINVAL; + if (a->bfound == -1 + && a->mvd_bsrc < a->bwh + && a->bwh != -1 + && a->bwh < a->mvd_bdst) { + a->mvd_errno = EAU_MVDOWN_WHITEOUT; + AU_MVD_PR(dmsg, "bsrc %d, bdst %d, bfound %d, bwh %d\n", + a->mvd_bsrc, a->mvd_bdst, a->bfound, a->bwh); + goto out; + } else if (a->bfound != -1 && a->bfound < a->mvd_bdst) { + a->mvd_errno = EAU_MVDOWN_UPPER; + AU_MVD_PR(dmsg, "bdst %d, bfound %d\n", + a->mvd_bdst, a->bfound); + goto out; + } + + err = 0; /* success */ + +out: + AuTraceErr(err); + return err; +} + +static int au_mvd_args_exist(const unsigned char dmsg, struct au_mvd_args *a) +{ + int err; + + err = 0; + if (!(a->mvdown.flags & AUFS_MVDOWN_OWLOWER) + && a->bfound == a->mvd_bdst) + err = -EEXIST; + AuTraceErr(err); + return err; +} + +static int au_mvd_args(const unsigned char dmsg, struct au_mvd_args *a) +{ + int err; + struct au_branch *br; + + err = -EISDIR; + if (unlikely(S_ISDIR(a->inode->i_mode))) + goto out; + + err = -EINVAL; + if (!(a->mvdown.flags & AUFS_MVDOWN_BRID_UPPER)) + a->mvd_bsrc = au_ibtop(a->inode); + else { + a->mvd_bsrc = au_br_index(a->sb, a->mvd_src_brid); + if (unlikely(a->mvd_bsrc < 0 + || (a->mvd_bsrc < au_dbtop(a->dentry) + || au_dbbot(a->dentry) < a->mvd_bsrc + || !au_h_dptr(a->dentry, a->mvd_bsrc)) + || (a->mvd_bsrc < au_ibtop(a->inode) + || au_ibbot(a->inode) < a->mvd_bsrc + || !au_h_iptr(a->inode, a->mvd_bsrc)))) { + a->mvd_errno = EAU_MVDOWN_NOUPPER; + AU_MVD_PR(dmsg, "no upper\n"); + goto out; + } + } + if (unlikely(a->mvd_bsrc == au_sbbot(a->sb))) { + a->mvd_errno = EAU_MVDOWN_BOTTOM; + AU_MVD_PR(dmsg, "on the bottom\n"); + goto out; + } + a->mvd_h_src_inode = au_h_iptr(a->inode, a->mvd_bsrc); + br = au_sbr(a->sb, a->mvd_bsrc); + err = au_br_rdonly(br); + if (!(a->mvdown.flags & AUFS_MVDOWN_ROUPPER)) { + if (unlikely(err)) + goto out; + } else if (!(vfsub_native_ro(a->mvd_h_src_inode) + || IS_APPEND(a->mvd_h_src_inode))) { + if (err) + a->mvdown.flags |= AUFS_MVDOWN_ROUPPER_R; + /* go on */ + } else + goto out; + + err = -EINVAL; + if (!(a->mvdown.flags & AUFS_MVDOWN_BRID_LOWER)) { + a->mvd_bdst = find_lower_writable(a); + if (unlikely(a->mvd_bdst < 0)) { + a->mvd_errno = EAU_MVDOWN_BOTTOM; + AU_MVD_PR(dmsg, "no writable lower branch\n"); + goto out; + } + } else { + a->mvd_bdst = au_br_index(a->sb, a->mvd_dst_brid); + if (unlikely(a->mvd_bdst < 0 + || au_sbbot(a->sb) < a->mvd_bdst)) { + a->mvd_errno = EAU_MVDOWN_NOLOWERBR; + AU_MVD_PR(dmsg, "no lower brid\n"); + goto out; + } + } + + err = au_mvd_args_busy(dmsg, a); + if (!err) + err = au_mvd_args_parent(dmsg, a); + if (!err) + err = au_mvd_args_intermediate(dmsg, a); + if (!err) + err = au_mvd_args_exist(dmsg, a); + if (!err) + AuDbg("b%d, b%d\n", a->mvd_bsrc, a->mvd_bdst); + +out: + AuTraceErr(err); + return err; +} + +int au_mvdown(struct dentry *dentry, struct aufs_mvdown __user *uarg) +{ + int err, e; + unsigned char dmsg; + struct au_mvd_args *args; + struct inode *inode; + + inode = d_inode(dentry); + err = -EPERM; + if (unlikely(!capable(CAP_SYS_ADMIN))) + goto out; + + err = -ENOMEM; + args = kmalloc(sizeof(*args), GFP_NOFS); + if (unlikely(!args)) + goto out; + + err = copy_from_user(&args->mvdown, uarg, sizeof(args->mvdown)); + if (!err) + err = !access_ok(VERIFY_WRITE, uarg, sizeof(*uarg)); + if (unlikely(err)) { + err = -EFAULT; + AuTraceErr(err); + goto out_free; + } + AuDbg("flags 0x%x\n", args->mvdown.flags); + args->mvdown.flags &= ~(AUFS_MVDOWN_ROLOWER_R | AUFS_MVDOWN_ROUPPER_R); + args->mvdown.au_errno = 0; + args->dentry = dentry; + args->inode = inode; + args->sb = dentry->d_sb; + + err = -ENOENT; + dmsg = !!(args->mvdown.flags & AUFS_MVDOWN_DMSG); + args->parent = dget_parent(dentry); + args->dir = d_inode(args->parent); + inode_lock_nested(args->dir, I_MUTEX_PARENT); + dput(args->parent); + if (unlikely(args->parent != dentry->d_parent)) { + AU_MVD_PR(dmsg, "parent dir is moved\n"); + goto out_dir; + } + + inode_lock_nested(inode, I_MUTEX_CHILD); + err = aufs_read_lock(dentry, AuLock_DW | AuLock_FLUSH | AuLock_NOPLMW); + if (unlikely(err)) + goto out_inode; + + di_write_lock_parent(args->parent); + err = au_mvd_args(dmsg, args); + if (unlikely(err)) + goto out_parent; + + err = au_do_mvdown(dmsg, args); + if (unlikely(err)) + goto out_parent; + + au_cpup_attr_timesizes(args->dir); + au_cpup_attr_timesizes(inode); + if (!(args->mvdown.flags & AUFS_MVDOWN_KUPPER)) + au_cpup_igen(inode, au_h_iptr(inode, args->mvd_bdst)); + /* au_digen_dec(dentry); */ + +out_parent: + di_write_unlock(args->parent); + aufs_read_unlock(dentry, AuLock_DW); +out_inode: + inode_unlock(inode); +out_dir: + inode_unlock(args->dir); +out_free: + e = copy_to_user(uarg, &args->mvdown, sizeof(args->mvdown)); + if (unlikely(e)) + err = -EFAULT; + kfree(args); +out: + AuTraceErr(err); + return err; +} diff --git a/include/fs/aufs/opts.c b/include/fs/aufs/opts.c new file mode 100644 index 00000000000..eb3fe3fb4e7 --- /dev/null +++ b/include/fs/aufs/opts.c @@ -0,0 +1,1891 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * mount options/flags + */ + +#include +#include /* a distribution requires */ +#include +#include "aufs.h" + +/* ---------------------------------------------------------------------- */ + +enum { + Opt_br, + Opt_add, Opt_del, Opt_mod, Opt_append, Opt_prepend, + Opt_idel, Opt_imod, + Opt_dirwh, Opt_rdcache, Opt_rdblk, Opt_rdhash, + Opt_rdblk_def, Opt_rdhash_def, + Opt_xino, Opt_noxino, + Opt_trunc_xino, Opt_trunc_xino_v, Opt_notrunc_xino, + Opt_trunc_xino_path, Opt_itrunc_xino, + Opt_trunc_xib, Opt_notrunc_xib, + Opt_shwh, Opt_noshwh, + Opt_plink, Opt_noplink, Opt_list_plink, + Opt_udba, + Opt_dio, Opt_nodio, + Opt_diropq_a, Opt_diropq_w, + Opt_warn_perm, Opt_nowarn_perm, + Opt_wbr_copyup, Opt_wbr_create, + Opt_fhsm_sec, + Opt_verbose, Opt_noverbose, + Opt_sum, Opt_nosum, Opt_wsum, + Opt_dirperm1, Opt_nodirperm1, + Opt_dirren, Opt_nodirren, + Opt_acl, Opt_noacl, + Opt_tail, Opt_ignore, Opt_ignore_silent, Opt_err +}; + +static match_table_t options = { + {Opt_br, "br=%s"}, + {Opt_br, "br:%s"}, + + {Opt_add, "add=%d:%s"}, + {Opt_add, "add:%d:%s"}, + {Opt_add, "ins=%d:%s"}, + {Opt_add, "ins:%d:%s"}, + {Opt_append, "append=%s"}, + {Opt_append, "append:%s"}, + {Opt_prepend, "prepend=%s"}, + {Opt_prepend, "prepend:%s"}, + + {Opt_del, "del=%s"}, + {Opt_del, "del:%s"}, + /* {Opt_idel, "idel:%d"}, */ + {Opt_mod, "mod=%s"}, + {Opt_mod, "mod:%s"}, + /* {Opt_imod, "imod:%d:%s"}, */ + + {Opt_dirwh, "dirwh=%d"}, + + {Opt_xino, "xino=%s"}, + {Opt_noxino, "noxino"}, + {Opt_trunc_xino, "trunc_xino"}, + {Opt_trunc_xino_v, "trunc_xino_v=%d:%d"}, + {Opt_notrunc_xino, "notrunc_xino"}, + {Opt_trunc_xino_path, "trunc_xino=%s"}, + {Opt_itrunc_xino, "itrunc_xino=%d"}, + /* {Opt_zxino, "zxino=%s"}, */ + {Opt_trunc_xib, "trunc_xib"}, + {Opt_notrunc_xib, "notrunc_xib"}, + +#ifdef CONFIG_PROC_FS + {Opt_plink, "plink"}, +#else + {Opt_ignore_silent, "plink"}, +#endif + + {Opt_noplink, "noplink"}, + +#ifdef CONFIG_AUFS_DEBUG + {Opt_list_plink, "list_plink"}, +#endif + + {Opt_udba, "udba=%s"}, + + {Opt_dio, "dio"}, + {Opt_nodio, "nodio"}, + +#ifdef CONFIG_AUFS_DIRREN + {Opt_dirren, "dirren"}, + {Opt_nodirren, "nodirren"}, +#else + {Opt_ignore, "dirren"}, + {Opt_ignore_silent, "nodirren"}, +#endif + +#ifdef CONFIG_AUFS_FHSM + {Opt_fhsm_sec, "fhsm_sec=%d"}, +#else + {Opt_ignore, "fhsm_sec=%d"}, +#endif + + {Opt_diropq_a, "diropq=always"}, + {Opt_diropq_a, "diropq=a"}, + {Opt_diropq_w, "diropq=whiteouted"}, + {Opt_diropq_w, "diropq=w"}, + + {Opt_warn_perm, "warn_perm"}, + {Opt_nowarn_perm, "nowarn_perm"}, + + /* keep them temporary */ + {Opt_ignore_silent, "nodlgt"}, + {Opt_ignore, "clean_plink"}, + +#ifdef CONFIG_AUFS_SHWH + {Opt_shwh, "shwh"}, +#endif + {Opt_noshwh, "noshwh"}, + + {Opt_dirperm1, "dirperm1"}, + {Opt_nodirperm1, "nodirperm1"}, + + {Opt_verbose, "verbose"}, + {Opt_verbose, "v"}, + {Opt_noverbose, "noverbose"}, + {Opt_noverbose, "quiet"}, + {Opt_noverbose, "q"}, + {Opt_noverbose, "silent"}, + + {Opt_sum, "sum"}, + {Opt_nosum, "nosum"}, + {Opt_wsum, "wsum"}, + + {Opt_rdcache, "rdcache=%d"}, + {Opt_rdblk, "rdblk=%d"}, + {Opt_rdblk_def, "rdblk=def"}, + {Opt_rdhash, "rdhash=%d"}, + {Opt_rdhash_def, "rdhash=def"}, + + {Opt_wbr_create, "create=%s"}, + {Opt_wbr_create, "create_policy=%s"}, + {Opt_wbr_copyup, "cpup=%s"}, + {Opt_wbr_copyup, "copyup=%s"}, + {Opt_wbr_copyup, "copyup_policy=%s"}, + + /* generic VFS flag */ +#ifdef CONFIG_FS_POSIX_ACL + {Opt_acl, "acl"}, + {Opt_noacl, "noacl"}, +#else + {Opt_ignore, "acl"}, + {Opt_ignore_silent, "noacl"}, +#endif + + /* internal use for the scripts */ + {Opt_ignore_silent, "si=%s"}, + + {Opt_br, "dirs=%s"}, + {Opt_ignore, "debug=%d"}, + {Opt_ignore, "delete=whiteout"}, + {Opt_ignore, "delete=all"}, + {Opt_ignore, "imap=%s"}, + + /* temporary workaround, due to old mount(8)? */ + {Opt_ignore_silent, "relatime"}, + + {Opt_err, NULL} +}; + +/* ---------------------------------------------------------------------- */ + +static const char *au_parser_pattern(int val, match_table_t tbl) +{ + struct match_token *p; + + p = tbl; + while (p->pattern) { + if (p->token == val) + return p->pattern; + p++; + } + BUG(); + return "??"; +} + +static const char *au_optstr(int *val, match_table_t tbl) +{ + struct match_token *p; + int v; + + v = *val; + if (!v) + goto out; + p = tbl; + while (p->pattern) { + if (p->token + && (v & p->token) == p->token) { + *val &= ~p->token; + return p->pattern; + } + p++; + } + +out: + return NULL; +} + +/* ---------------------------------------------------------------------- */ + +static match_table_t brperm = { + {AuBrPerm_RO, AUFS_BRPERM_RO}, + {AuBrPerm_RR, AUFS_BRPERM_RR}, + {AuBrPerm_RW, AUFS_BRPERM_RW}, + {0, NULL} +}; + +static match_table_t brattr = { + /* general */ + {AuBrAttr_COO_REG, AUFS_BRATTR_COO_REG}, + {AuBrAttr_COO_ALL, AUFS_BRATTR_COO_ALL}, + /* 'unpin' attrib is meaningless since linux-3.18-rc1 */ + {AuBrAttr_UNPIN, AUFS_BRATTR_UNPIN}, +#ifdef CONFIG_AUFS_FHSM + {AuBrAttr_FHSM, AUFS_BRATTR_FHSM}, +#endif +#ifdef CONFIG_AUFS_XATTR + {AuBrAttr_ICEX, AUFS_BRATTR_ICEX}, + {AuBrAttr_ICEX_SEC, AUFS_BRATTR_ICEX_SEC}, + {AuBrAttr_ICEX_SYS, AUFS_BRATTR_ICEX_SYS}, + {AuBrAttr_ICEX_TR, AUFS_BRATTR_ICEX_TR}, + {AuBrAttr_ICEX_USR, AUFS_BRATTR_ICEX_USR}, + {AuBrAttr_ICEX_OTH, AUFS_BRATTR_ICEX_OTH}, +#endif + + /* ro/rr branch */ + {AuBrRAttr_WH, AUFS_BRRATTR_WH}, + + /* rw branch */ + {AuBrWAttr_MOO, AUFS_BRWATTR_MOO}, + {AuBrWAttr_NoLinkWH, AUFS_BRWATTR_NLWH}, + + {0, NULL} +}; + +static int br_attr_val(char *str, match_table_t table, substring_t args[]) +{ + int attr, v; + char *p; + + attr = 0; + do { + p = strchr(str, '+'); + if (p) + *p = 0; + v = match_token(str, table, args); + if (v) { + if (v & AuBrAttr_CMOO_Mask) + attr &= ~AuBrAttr_CMOO_Mask; + attr |= v; + } else { + if (p) + *p = '+'; + pr_warn("ignored branch attribute %s\n", str); + break; + } + if (p) + str = p + 1; + } while (p); + + return attr; +} + +static int au_do_optstr_br_attr(au_br_perm_str_t *str, int perm) +{ + int sz; + const char *p; + char *q; + + q = str->a; + *q = 0; + p = au_optstr(&perm, brattr); + if (p) { + sz = strlen(p); + memcpy(q, p, sz + 1); + q += sz; + } else + goto out; + + do { + p = au_optstr(&perm, brattr); + if (p) { + *q++ = '+'; + sz = strlen(p); + memcpy(q, p, sz + 1); + q += sz; + } + } while (p); + +out: + return q - str->a; +} + +static int noinline_for_stack br_perm_val(char *perm) +{ + int val, bad, sz; + char *p; + substring_t args[MAX_OPT_ARGS]; + au_br_perm_str_t attr; + + p = strchr(perm, '+'); + if (p) + *p = 0; + val = match_token(perm, brperm, args); + if (!val) { + if (p) + *p = '+'; + pr_warn("ignored branch permission %s\n", perm); + val = AuBrPerm_RO; + goto out; + } + if (!p) + goto out; + + val |= br_attr_val(p + 1, brattr, args); + + bad = 0; + switch (val & AuBrPerm_Mask) { + case AuBrPerm_RO: + case AuBrPerm_RR: + bad = val & AuBrWAttr_Mask; + val &= ~AuBrWAttr_Mask; + break; + case AuBrPerm_RW: + bad = val & AuBrRAttr_Mask; + val &= ~AuBrRAttr_Mask; + break; + } + + /* + * 'unpin' attrib becomes meaningless since linux-3.18-rc1, but aufs + * does not treat it as an error, just warning. + * this is a tiny guard for the user operation. + */ + if (val & AuBrAttr_UNPIN) { + bad |= AuBrAttr_UNPIN; + val &= ~AuBrAttr_UNPIN; + } + + if (unlikely(bad)) { + sz = au_do_optstr_br_attr(&attr, bad); + AuDebugOn(!sz); + pr_warn("ignored branch attribute %s\n", attr.a); + } + +out: + return val; +} + +void au_optstr_br_perm(au_br_perm_str_t *str, int perm) +{ + au_br_perm_str_t attr; + const char *p; + char *q; + int sz; + + q = str->a; + p = au_optstr(&perm, brperm); + AuDebugOn(!p || !*p); + sz = strlen(p); + memcpy(q, p, sz + 1); + q += sz; + + sz = au_do_optstr_br_attr(&attr, perm); + if (sz) { + *q++ = '+'; + memcpy(q, attr.a, sz + 1); + } + + AuDebugOn(strlen(str->a) >= sizeof(str->a)); +} + +/* ---------------------------------------------------------------------- */ + +static match_table_t udbalevel = { + {AuOpt_UDBA_REVAL, "reval"}, + {AuOpt_UDBA_NONE, "none"}, +#ifdef CONFIG_AUFS_HNOTIFY + {AuOpt_UDBA_HNOTIFY, "notify"}, /* abstraction */ +#ifdef CONFIG_AUFS_HFSNOTIFY + {AuOpt_UDBA_HNOTIFY, "fsnotify"}, +#endif +#endif + {-1, NULL} +}; + +static int noinline_for_stack udba_val(char *str) +{ + substring_t args[MAX_OPT_ARGS]; + + return match_token(str, udbalevel, args); +} + +const char *au_optstr_udba(int udba) +{ + return au_parser_pattern(udba, udbalevel); +} + +/* ---------------------------------------------------------------------- */ + +static match_table_t au_wbr_create_policy = { + {AuWbrCreate_TDP, "tdp"}, + {AuWbrCreate_TDP, "top-down-parent"}, + {AuWbrCreate_RR, "rr"}, + {AuWbrCreate_RR, "round-robin"}, + {AuWbrCreate_MFS, "mfs"}, + {AuWbrCreate_MFS, "most-free-space"}, + {AuWbrCreate_MFSV, "mfs:%d"}, + {AuWbrCreate_MFSV, "most-free-space:%d"}, + + /* top-down regardless the parent, and then mfs */ + {AuWbrCreate_TDMFS, "tdmfs:%d"}, + {AuWbrCreate_TDMFSV, "tdmfs:%d:%d"}, + + {AuWbrCreate_MFSRR, "mfsrr:%d"}, + {AuWbrCreate_MFSRRV, "mfsrr:%d:%d"}, + {AuWbrCreate_PMFS, "pmfs"}, + {AuWbrCreate_PMFSV, "pmfs:%d"}, + {AuWbrCreate_PMFSRR, "pmfsrr:%d"}, + {AuWbrCreate_PMFSRRV, "pmfsrr:%d:%d"}, + + {-1, NULL} +}; + +static int au_wbr_mfs_wmark(substring_t *arg, char *str, + struct au_opt_wbr_create *create) +{ + int err; + unsigned long long ull; + + err = 0; + if (!match_u64(arg, &ull)) + create->mfsrr_watermark = ull; + else { + pr_err("bad integer in %s\n", str); + err = -EINVAL; + } + + return err; +} + +static int au_wbr_mfs_sec(substring_t *arg, char *str, + struct au_opt_wbr_create *create) +{ + int n, err; + + err = 0; + if (!match_int(arg, &n) && 0 <= n && n <= AUFS_MFS_MAX_SEC) + create->mfs_second = n; + else { + pr_err("bad integer in %s\n", str); + err = -EINVAL; + } + + return err; +} + +static int noinline_for_stack +au_wbr_create_val(char *str, struct au_opt_wbr_create *create) +{ + int err, e; + substring_t args[MAX_OPT_ARGS]; + + err = match_token(str, au_wbr_create_policy, args); + create->wbr_create = err; + switch (err) { + case AuWbrCreate_MFSRRV: + case AuWbrCreate_TDMFSV: + case AuWbrCreate_PMFSRRV: + e = au_wbr_mfs_wmark(&args[0], str, create); + if (!e) + e = au_wbr_mfs_sec(&args[1], str, create); + if (unlikely(e)) + err = e; + break; + case AuWbrCreate_MFSRR: + case AuWbrCreate_TDMFS: + case AuWbrCreate_PMFSRR: + e = au_wbr_mfs_wmark(&args[0], str, create); + if (unlikely(e)) { + err = e; + break; + } + /*FALLTHROUGH*/ + case AuWbrCreate_MFS: + case AuWbrCreate_PMFS: + create->mfs_second = AUFS_MFS_DEF_SEC; + break; + case AuWbrCreate_MFSV: + case AuWbrCreate_PMFSV: + e = au_wbr_mfs_sec(&args[0], str, create); + if (unlikely(e)) + err = e; + break; + } + + return err; +} + +const char *au_optstr_wbr_create(int wbr_create) +{ + return au_parser_pattern(wbr_create, au_wbr_create_policy); +} + +static match_table_t au_wbr_copyup_policy = { + {AuWbrCopyup_TDP, "tdp"}, + {AuWbrCopyup_TDP, "top-down-parent"}, + {AuWbrCopyup_BUP, "bup"}, + {AuWbrCopyup_BUP, "bottom-up-parent"}, + {AuWbrCopyup_BU, "bu"}, + {AuWbrCopyup_BU, "bottom-up"}, + {-1, NULL} +}; + +static int noinline_for_stack au_wbr_copyup_val(char *str) +{ + substring_t args[MAX_OPT_ARGS]; + + return match_token(str, au_wbr_copyup_policy, args); +} + +const char *au_optstr_wbr_copyup(int wbr_copyup) +{ + return au_parser_pattern(wbr_copyup, au_wbr_copyup_policy); +} + +/* ---------------------------------------------------------------------- */ + +static const int lkup_dirflags = LOOKUP_FOLLOW | LOOKUP_DIRECTORY; + +static void dump_opts(struct au_opts *opts) +{ +#ifdef CONFIG_AUFS_DEBUG + /* reduce stack space */ + union { + struct au_opt_add *add; + struct au_opt_del *del; + struct au_opt_mod *mod; + struct au_opt_xino *xino; + struct au_opt_xino_itrunc *xino_itrunc; + struct au_opt_wbr_create *create; + } u; + struct au_opt *opt; + + opt = opts->opt; + while (opt->type != Opt_tail) { + switch (opt->type) { + case Opt_add: + u.add = &opt->add; + AuDbg("add {b%d, %s, 0x%x, %p}\n", + u.add->bindex, u.add->pathname, u.add->perm, + u.add->path.dentry); + break; + case Opt_del: + case Opt_idel: + u.del = &opt->del; + AuDbg("del {%s, %p}\n", + u.del->pathname, u.del->h_path.dentry); + break; + case Opt_mod: + case Opt_imod: + u.mod = &opt->mod; + AuDbg("mod {%s, 0x%x, %p}\n", + u.mod->path, u.mod->perm, u.mod->h_root); + break; + case Opt_append: + u.add = &opt->add; + AuDbg("append {b%d, %s, 0x%x, %p}\n", + u.add->bindex, u.add->pathname, u.add->perm, + u.add->path.dentry); + break; + case Opt_prepend: + u.add = &opt->add; + AuDbg("prepend {b%d, %s, 0x%x, %p}\n", + u.add->bindex, u.add->pathname, u.add->perm, + u.add->path.dentry); + break; + case Opt_dirwh: + AuDbg("dirwh %d\n", opt->dirwh); + break; + case Opt_rdcache: + AuDbg("rdcache %d\n", opt->rdcache); + break; + case Opt_rdblk: + AuDbg("rdblk %u\n", opt->rdblk); + break; + case Opt_rdblk_def: + AuDbg("rdblk_def\n"); + break; + case Opt_rdhash: + AuDbg("rdhash %u\n", opt->rdhash); + break; + case Opt_rdhash_def: + AuDbg("rdhash_def\n"); + break; + case Opt_xino: + u.xino = &opt->xino; + AuDbg("xino {%s %pD}\n", u.xino->path, u.xino->file); + break; + case Opt_trunc_xino: + AuLabel(trunc_xino); + break; + case Opt_notrunc_xino: + AuLabel(notrunc_xino); + break; + case Opt_trunc_xino_path: + case Opt_itrunc_xino: + u.xino_itrunc = &opt->xino_itrunc; + AuDbg("trunc_xino %d\n", u.xino_itrunc->bindex); + break; + case Opt_noxino: + AuLabel(noxino); + break; + case Opt_trunc_xib: + AuLabel(trunc_xib); + break; + case Opt_notrunc_xib: + AuLabel(notrunc_xib); + break; + case Opt_shwh: + AuLabel(shwh); + break; + case Opt_noshwh: + AuLabel(noshwh); + break; + case Opt_dirperm1: + AuLabel(dirperm1); + break; + case Opt_nodirperm1: + AuLabel(nodirperm1); + break; + case Opt_plink: + AuLabel(plink); + break; + case Opt_noplink: + AuLabel(noplink); + break; + case Opt_list_plink: + AuLabel(list_plink); + break; + case Opt_udba: + AuDbg("udba %d, %s\n", + opt->udba, au_optstr_udba(opt->udba)); + break; + case Opt_dio: + AuLabel(dio); + break; + case Opt_nodio: + AuLabel(nodio); + break; + case Opt_diropq_a: + AuLabel(diropq_a); + break; + case Opt_diropq_w: + AuLabel(diropq_w); + break; + case Opt_warn_perm: + AuLabel(warn_perm); + break; + case Opt_nowarn_perm: + AuLabel(nowarn_perm); + break; + case Opt_verbose: + AuLabel(verbose); + break; + case Opt_noverbose: + AuLabel(noverbose); + break; + case Opt_sum: + AuLabel(sum); + break; + case Opt_nosum: + AuLabel(nosum); + break; + case Opt_wsum: + AuLabel(wsum); + break; + case Opt_wbr_create: + u.create = &opt->wbr_create; + AuDbg("create %d, %s\n", u.create->wbr_create, + au_optstr_wbr_create(u.create->wbr_create)); + switch (u.create->wbr_create) { + case AuWbrCreate_MFSV: + case AuWbrCreate_PMFSV: + AuDbg("%d sec\n", u.create->mfs_second); + break; + case AuWbrCreate_MFSRR: + case AuWbrCreate_TDMFS: + AuDbg("%llu watermark\n", + u.create->mfsrr_watermark); + break; + case AuWbrCreate_MFSRRV: + case AuWbrCreate_TDMFSV: + case AuWbrCreate_PMFSRRV: + AuDbg("%llu watermark, %d sec\n", + u.create->mfsrr_watermark, + u.create->mfs_second); + break; + } + break; + case Opt_wbr_copyup: + AuDbg("copyup %d, %s\n", opt->wbr_copyup, + au_optstr_wbr_copyup(opt->wbr_copyup)); + break; + case Opt_fhsm_sec: + AuDbg("fhsm_sec %u\n", opt->fhsm_second); + break; + case Opt_dirren: + AuLabel(dirren); + break; + case Opt_nodirren: + AuLabel(nodirren); + break; + case Opt_acl: + AuLabel(acl); + break; + case Opt_noacl: + AuLabel(noacl); + break; + default: + BUG(); + } + opt++; + } +#endif +} + +void au_opts_free(struct au_opts *opts) +{ + struct au_opt *opt; + + opt = opts->opt; + while (opt->type != Opt_tail) { + switch (opt->type) { + case Opt_add: + case Opt_append: + case Opt_prepend: + path_put(&opt->add.path); + break; + case Opt_del: + case Opt_idel: + path_put(&opt->del.h_path); + break; + case Opt_mod: + case Opt_imod: + dput(opt->mod.h_root); + break; + case Opt_xino: + fput(opt->xino.file); + break; + } + opt++; + } +} + +static int opt_add(struct au_opt *opt, char *opt_str, unsigned long sb_flags, + aufs_bindex_t bindex) +{ + int err; + struct au_opt_add *add = &opt->add; + char *p; + + add->bindex = bindex; + add->perm = AuBrPerm_RO; + add->pathname = opt_str; + p = strchr(opt_str, '='); + if (p) { + *p++ = 0; + if (*p) + add->perm = br_perm_val(p); + } + + err = vfsub_kern_path(add->pathname, lkup_dirflags, &add->path); + if (!err) { + if (!p) { + add->perm = AuBrPerm_RO; + if (au_test_fs_rr(add->path.dentry->d_sb)) + add->perm = AuBrPerm_RR; + else if (!bindex && !(sb_flags & SB_RDONLY)) + add->perm = AuBrPerm_RW; + } + opt->type = Opt_add; + goto out; + } + pr_err("lookup failed %s (%d)\n", add->pathname, err); + err = -EINVAL; + +out: + return err; +} + +static int au_opts_parse_del(struct au_opt_del *del, substring_t args[]) +{ + int err; + + del->pathname = args[0].from; + AuDbg("del path %s\n", del->pathname); + + err = vfsub_kern_path(del->pathname, lkup_dirflags, &del->h_path); + if (unlikely(err)) + pr_err("lookup failed %s (%d)\n", del->pathname, err); + + return err; +} + +#if 0 /* reserved for future use */ +static int au_opts_parse_idel(struct super_block *sb, aufs_bindex_t bindex, + struct au_opt_del *del, substring_t args[]) +{ + int err; + struct dentry *root; + + err = -EINVAL; + root = sb->s_root; + aufs_read_lock(root, AuLock_FLUSH); + if (bindex < 0 || au_sbbot(sb) < bindex) { + pr_err("out of bounds, %d\n", bindex); + goto out; + } + + err = 0; + del->h_path.dentry = dget(au_h_dptr(root, bindex)); + del->h_path.mnt = mntget(au_sbr_mnt(sb, bindex)); + +out: + aufs_read_unlock(root, !AuLock_IR); + return err; +} +#endif + +static int noinline_for_stack +au_opts_parse_mod(struct au_opt_mod *mod, substring_t args[]) +{ + int err; + struct path path; + char *p; + + err = -EINVAL; + mod->path = args[0].from; + p = strchr(mod->path, '='); + if (unlikely(!p)) { + pr_err("no permssion %s\n", args[0].from); + goto out; + } + + *p++ = 0; + err = vfsub_kern_path(mod->path, lkup_dirflags, &path); + if (unlikely(err)) { + pr_err("lookup failed %s (%d)\n", mod->path, err); + goto out; + } + + mod->perm = br_perm_val(p); + AuDbg("mod path %s, perm 0x%x, %s\n", mod->path, mod->perm, p); + mod->h_root = dget(path.dentry); + path_put(&path); + +out: + return err; +} + +#if 0 /* reserved for future use */ +static int au_opts_parse_imod(struct super_block *sb, aufs_bindex_t bindex, + struct au_opt_mod *mod, substring_t args[]) +{ + int err; + struct dentry *root; + + err = -EINVAL; + root = sb->s_root; + aufs_read_lock(root, AuLock_FLUSH); + if (bindex < 0 || au_sbbot(sb) < bindex) { + pr_err("out of bounds, %d\n", bindex); + goto out; + } + + err = 0; + mod->perm = br_perm_val(args[1].from); + AuDbg("mod path %s, perm 0x%x, %s\n", + mod->path, mod->perm, args[1].from); + mod->h_root = dget(au_h_dptr(root, bindex)); + +out: + aufs_read_unlock(root, !AuLock_IR); + return err; +} +#endif + +static int au_opts_parse_xino(struct super_block *sb, struct au_opt_xino *xino, + substring_t args[]) +{ + int err; + struct file *file; + + file = au_xino_create(sb, args[0].from, /*silent*/0); + err = PTR_ERR(file); + if (IS_ERR(file)) + goto out; + + err = -EINVAL; + if (unlikely(file->f_path.dentry->d_sb == sb)) { + fput(file); + pr_err("%s must be outside\n", args[0].from); + goto out; + } + + err = 0; + xino->file = file; + xino->path = args[0].from; + +out: + return err; +} + +static int noinline_for_stack +au_opts_parse_xino_itrunc_path(struct super_block *sb, + struct au_opt_xino_itrunc *xino_itrunc, + substring_t args[]) +{ + int err; + aufs_bindex_t bbot, bindex; + struct path path; + struct dentry *root; + + err = vfsub_kern_path(args[0].from, lkup_dirflags, &path); + if (unlikely(err)) { + pr_err("lookup failed %s (%d)\n", args[0].from, err); + goto out; + } + + xino_itrunc->bindex = -1; + root = sb->s_root; + aufs_read_lock(root, AuLock_FLUSH); + bbot = au_sbbot(sb); + for (bindex = 0; bindex <= bbot; bindex++) { + if (au_h_dptr(root, bindex) == path.dentry) { + xino_itrunc->bindex = bindex; + break; + } + } + aufs_read_unlock(root, !AuLock_IR); + path_put(&path); + + if (unlikely(xino_itrunc->bindex < 0)) { + pr_err("no such branch %s\n", args[0].from); + err = -EINVAL; + } + +out: + return err; +} + +/* called without aufs lock */ +int au_opts_parse(struct super_block *sb, char *str, struct au_opts *opts) +{ + int err, n, token; + aufs_bindex_t bindex; + unsigned char skipped; + struct dentry *root; + struct au_opt *opt, *opt_tail; + char *opt_str; + /* reduce the stack space */ + union { + struct au_opt_xino_itrunc *xino_itrunc; + struct au_opt_wbr_create *create; + } u; + struct { + substring_t args[MAX_OPT_ARGS]; + } *a; + + err = -ENOMEM; + a = kmalloc(sizeof(*a), GFP_NOFS); + if (unlikely(!a)) + goto out; + + root = sb->s_root; + err = 0; + bindex = 0; + opt = opts->opt; + opt_tail = opt + opts->max_opt - 1; + opt->type = Opt_tail; + while (!err && (opt_str = strsep(&str, ",")) && *opt_str) { + err = -EINVAL; + skipped = 0; + token = match_token(opt_str, options, a->args); + switch (token) { + case Opt_br: + err = 0; + while (!err && (opt_str = strsep(&a->args[0].from, ":")) + && *opt_str) { + err = opt_add(opt, opt_str, opts->sb_flags, + bindex++); + if (unlikely(!err && ++opt > opt_tail)) { + err = -E2BIG; + break; + } + opt->type = Opt_tail; + skipped = 1; + } + break; + case Opt_add: + if (unlikely(match_int(&a->args[0], &n))) { + pr_err("bad integer in %s\n", opt_str); + break; + } + bindex = n; + err = opt_add(opt, a->args[1].from, opts->sb_flags, + bindex); + if (!err) + opt->type = token; + break; + case Opt_append: + err = opt_add(opt, a->args[0].from, opts->sb_flags, + /*dummy bindex*/1); + if (!err) + opt->type = token; + break; + case Opt_prepend: + err = opt_add(opt, a->args[0].from, opts->sb_flags, + /*bindex*/0); + if (!err) + opt->type = token; + break; + case Opt_del: + err = au_opts_parse_del(&opt->del, a->args); + if (!err) + opt->type = token; + break; +#if 0 /* reserved for future use */ + case Opt_idel: + del->pathname = "(indexed)"; + if (unlikely(match_int(&args[0], &n))) { + pr_err("bad integer in %s\n", opt_str); + break; + } + err = au_opts_parse_idel(sb, n, &opt->del, a->args); + if (!err) + opt->type = token; + break; +#endif + case Opt_mod: + err = au_opts_parse_mod(&opt->mod, a->args); + if (!err) + opt->type = token; + break; +#ifdef IMOD /* reserved for future use */ + case Opt_imod: + u.mod->path = "(indexed)"; + if (unlikely(match_int(&a->args[0], &n))) { + pr_err("bad integer in %s\n", opt_str); + break; + } + err = au_opts_parse_imod(sb, n, &opt->mod, a->args); + if (!err) + opt->type = token; + break; +#endif + case Opt_xino: + err = au_opts_parse_xino(sb, &opt->xino, a->args); + if (!err) + opt->type = token; + break; + + case Opt_trunc_xino_path: + err = au_opts_parse_xino_itrunc_path + (sb, &opt->xino_itrunc, a->args); + if (!err) + opt->type = token; + break; + + case Opt_itrunc_xino: + u.xino_itrunc = &opt->xino_itrunc; + if (unlikely(match_int(&a->args[0], &n))) { + pr_err("bad integer in %s\n", opt_str); + break; + } + u.xino_itrunc->bindex = n; + aufs_read_lock(root, AuLock_FLUSH); + if (n < 0 || au_sbbot(sb) < n) { + pr_err("out of bounds, %d\n", n); + aufs_read_unlock(root, !AuLock_IR); + break; + } + aufs_read_unlock(root, !AuLock_IR); + err = 0; + opt->type = token; + break; + + case Opt_dirwh: + if (unlikely(match_int(&a->args[0], &opt->dirwh))) + break; + err = 0; + opt->type = token; + break; + + case Opt_rdcache: + if (unlikely(match_int(&a->args[0], &n))) { + pr_err("bad integer in %s\n", opt_str); + break; + } + if (unlikely(n > AUFS_RDCACHE_MAX)) { + pr_err("rdcache must be smaller than %d\n", + AUFS_RDCACHE_MAX); + break; + } + opt->rdcache = n; + err = 0; + opt->type = token; + break; + case Opt_rdblk: + if (unlikely(match_int(&a->args[0], &n) + || n < 0 + || n > KMALLOC_MAX_SIZE)) { + pr_err("bad integer in %s\n", opt_str); + break; + } + if (unlikely(n && n < NAME_MAX)) { + pr_err("rdblk must be larger than %d\n", + NAME_MAX); + break; + } + opt->rdblk = n; + err = 0; + opt->type = token; + break; + case Opt_rdhash: + if (unlikely(match_int(&a->args[0], &n) + || n < 0 + || n * sizeof(struct hlist_head) + > KMALLOC_MAX_SIZE)) { + pr_err("bad integer in %s\n", opt_str); + break; + } + opt->rdhash = n; + err = 0; + opt->type = token; + break; + + case Opt_trunc_xino: + case Opt_notrunc_xino: + case Opt_noxino: + case Opt_trunc_xib: + case Opt_notrunc_xib: + case Opt_shwh: + case Opt_noshwh: + case Opt_dirperm1: + case Opt_nodirperm1: + case Opt_plink: + case Opt_noplink: + case Opt_list_plink: + case Opt_dio: + case Opt_nodio: + case Opt_diropq_a: + case Opt_diropq_w: + case Opt_warn_perm: + case Opt_nowarn_perm: + case Opt_verbose: + case Opt_noverbose: + case Opt_sum: + case Opt_nosum: + case Opt_wsum: + case Opt_rdblk_def: + case Opt_rdhash_def: + case Opt_dirren: + case Opt_nodirren: + case Opt_acl: + case Opt_noacl: + err = 0; + opt->type = token; + break; + + case Opt_udba: + opt->udba = udba_val(a->args[0].from); + if (opt->udba >= 0) { + err = 0; + opt->type = token; + } else + pr_err("wrong value, %s\n", opt_str); + break; + + case Opt_wbr_create: + u.create = &opt->wbr_create; + u.create->wbr_create + = au_wbr_create_val(a->args[0].from, u.create); + if (u.create->wbr_create >= 0) { + err = 0; + opt->type = token; + } else + pr_err("wrong value, %s\n", opt_str); + break; + case Opt_wbr_copyup: + opt->wbr_copyup = au_wbr_copyup_val(a->args[0].from); + if (opt->wbr_copyup >= 0) { + err = 0; + opt->type = token; + } else + pr_err("wrong value, %s\n", opt_str); + break; + + case Opt_fhsm_sec: + if (unlikely(match_int(&a->args[0], &n) + || n < 0)) { + pr_err("bad integer in %s\n", opt_str); + break; + } + if (sysaufs_brs) { + opt->fhsm_second = n; + opt->type = token; + } else + pr_warn("ignored %s\n", opt_str); + err = 0; + break; + + case Opt_ignore: + pr_warn("ignored %s\n", opt_str); + /*FALLTHROUGH*/ + case Opt_ignore_silent: + skipped = 1; + err = 0; + break; + case Opt_err: + pr_err("unknown option %s\n", opt_str); + break; + } + + if (!err && !skipped) { + if (unlikely(++opt > opt_tail)) { + err = -E2BIG; + opt--; + opt->type = Opt_tail; + break; + } + opt->type = Opt_tail; + } + } + + kfree(a); + dump_opts(opts); + if (unlikely(err)) + au_opts_free(opts); + +out: + return err; +} + +static int au_opt_wbr_create(struct super_block *sb, + struct au_opt_wbr_create *create) +{ + int err; + struct au_sbinfo *sbinfo; + + SiMustWriteLock(sb); + + err = 1; /* handled */ + sbinfo = au_sbi(sb); + if (sbinfo->si_wbr_create_ops->fin) { + err = sbinfo->si_wbr_create_ops->fin(sb); + if (!err) + err = 1; + } + + sbinfo->si_wbr_create = create->wbr_create; + sbinfo->si_wbr_create_ops = au_wbr_create_ops + create->wbr_create; + switch (create->wbr_create) { + case AuWbrCreate_MFSRRV: + case AuWbrCreate_MFSRR: + case AuWbrCreate_TDMFS: + case AuWbrCreate_TDMFSV: + case AuWbrCreate_PMFSRR: + case AuWbrCreate_PMFSRRV: + sbinfo->si_wbr_mfs.mfsrr_watermark = create->mfsrr_watermark; + /*FALLTHROUGH*/ + case AuWbrCreate_MFS: + case AuWbrCreate_MFSV: + case AuWbrCreate_PMFS: + case AuWbrCreate_PMFSV: + sbinfo->si_wbr_mfs.mfs_expire + = msecs_to_jiffies(create->mfs_second * MSEC_PER_SEC); + break; + } + + if (sbinfo->si_wbr_create_ops->init) + sbinfo->si_wbr_create_ops->init(sb); /* ignore */ + + return err; +} + +/* + * returns, + * plus: processed without an error + * zero: unprocessed + */ +static int au_opt_simple(struct super_block *sb, struct au_opt *opt, + struct au_opts *opts) +{ + int err; + struct au_sbinfo *sbinfo; + + SiMustWriteLock(sb); + + err = 1; /* handled */ + sbinfo = au_sbi(sb); + switch (opt->type) { + case Opt_udba: + sbinfo->si_mntflags &= ~AuOptMask_UDBA; + sbinfo->si_mntflags |= opt->udba; + opts->given_udba |= opt->udba; + break; + + case Opt_plink: + au_opt_set(sbinfo->si_mntflags, PLINK); + break; + case Opt_noplink: + if (au_opt_test(sbinfo->si_mntflags, PLINK)) + au_plink_put(sb, /*verbose*/1); + au_opt_clr(sbinfo->si_mntflags, PLINK); + break; + case Opt_list_plink: + if (au_opt_test(sbinfo->si_mntflags, PLINK)) + au_plink_list(sb); + break; + + case Opt_dio: + au_opt_set(sbinfo->si_mntflags, DIO); + au_fset_opts(opts->flags, REFRESH_DYAOP); + break; + case Opt_nodio: + au_opt_clr(sbinfo->si_mntflags, DIO); + au_fset_opts(opts->flags, REFRESH_DYAOP); + break; + + case Opt_fhsm_sec: + au_fhsm_set(sbinfo, opt->fhsm_second); + break; + + case Opt_diropq_a: + au_opt_set(sbinfo->si_mntflags, ALWAYS_DIROPQ); + break; + case Opt_diropq_w: + au_opt_clr(sbinfo->si_mntflags, ALWAYS_DIROPQ); + break; + + case Opt_warn_perm: + au_opt_set(sbinfo->si_mntflags, WARN_PERM); + break; + case Opt_nowarn_perm: + au_opt_clr(sbinfo->si_mntflags, WARN_PERM); + break; + + case Opt_verbose: + au_opt_set(sbinfo->si_mntflags, VERBOSE); + break; + case Opt_noverbose: + au_opt_clr(sbinfo->si_mntflags, VERBOSE); + break; + + case Opt_sum: + au_opt_set(sbinfo->si_mntflags, SUM); + break; + case Opt_wsum: + au_opt_clr(sbinfo->si_mntflags, SUM); + au_opt_set(sbinfo->si_mntflags, SUM_W); + case Opt_nosum: + au_opt_clr(sbinfo->si_mntflags, SUM); + au_opt_clr(sbinfo->si_mntflags, SUM_W); + break; + + case Opt_wbr_create: + err = au_opt_wbr_create(sb, &opt->wbr_create); + break; + case Opt_wbr_copyup: + sbinfo->si_wbr_copyup = opt->wbr_copyup; + sbinfo->si_wbr_copyup_ops = au_wbr_copyup_ops + opt->wbr_copyup; + break; + + case Opt_dirwh: + sbinfo->si_dirwh = opt->dirwh; + break; + + case Opt_rdcache: + sbinfo->si_rdcache + = msecs_to_jiffies(opt->rdcache * MSEC_PER_SEC); + break; + case Opt_rdblk: + sbinfo->si_rdblk = opt->rdblk; + break; + case Opt_rdblk_def: + sbinfo->si_rdblk = AUFS_RDBLK_DEF; + break; + case Opt_rdhash: + sbinfo->si_rdhash = opt->rdhash; + break; + case Opt_rdhash_def: + sbinfo->si_rdhash = AUFS_RDHASH_DEF; + break; + + case Opt_shwh: + au_opt_set(sbinfo->si_mntflags, SHWH); + break; + case Opt_noshwh: + au_opt_clr(sbinfo->si_mntflags, SHWH); + break; + + case Opt_dirperm1: + au_opt_set(sbinfo->si_mntflags, DIRPERM1); + break; + case Opt_nodirperm1: + au_opt_clr(sbinfo->si_mntflags, DIRPERM1); + break; + + case Opt_trunc_xino: + au_opt_set(sbinfo->si_mntflags, TRUNC_XINO); + break; + case Opt_notrunc_xino: + au_opt_clr(sbinfo->si_mntflags, TRUNC_XINO); + break; + + case Opt_trunc_xino_path: + case Opt_itrunc_xino: + err = au_xino_trunc(sb, opt->xino_itrunc.bindex); + if (!err) + err = 1; + break; + + case Opt_trunc_xib: + au_fset_opts(opts->flags, TRUNC_XIB); + break; + case Opt_notrunc_xib: + au_fclr_opts(opts->flags, TRUNC_XIB); + break; + + case Opt_dirren: + err = 1; + if (!au_opt_test(sbinfo->si_mntflags, DIRREN)) { + err = au_dr_opt_set(sb); + if (!err) + err = 1; + } + if (err == 1) + au_opt_set(sbinfo->si_mntflags, DIRREN); + break; + case Opt_nodirren: + err = 1; + if (au_opt_test(sbinfo->si_mntflags, DIRREN)) { + err = au_dr_opt_clr(sb, au_ftest_opts(opts->flags, + DR_FLUSHED)); + if (!err) + err = 1; + } + if (err == 1) + au_opt_clr(sbinfo->si_mntflags, DIRREN); + break; + + case Opt_acl: + sb->s_flags |= SB_POSIXACL; + break; + case Opt_noacl: + sb->s_flags &= ~SB_POSIXACL; + break; + + default: + err = 0; + break; + } + + return err; +} + +/* + * returns tri-state. + * plus: processed without an error + * zero: unprocessed + * minus: error + */ +static int au_opt_br(struct super_block *sb, struct au_opt *opt, + struct au_opts *opts) +{ + int err, do_refresh; + + err = 0; + switch (opt->type) { + case Opt_append: + opt->add.bindex = au_sbbot(sb) + 1; + if (opt->add.bindex < 0) + opt->add.bindex = 0; + goto add; + case Opt_prepend: + opt->add.bindex = 0; + add: /* indented label */ + case Opt_add: + err = au_br_add(sb, &opt->add, + au_ftest_opts(opts->flags, REMOUNT)); + if (!err) { + err = 1; + au_fset_opts(opts->flags, REFRESH); + } + break; + + case Opt_del: + case Opt_idel: + err = au_br_del(sb, &opt->del, + au_ftest_opts(opts->flags, REMOUNT)); + if (!err) { + err = 1; + au_fset_opts(opts->flags, TRUNC_XIB); + au_fset_opts(opts->flags, REFRESH); + } + break; + + case Opt_mod: + case Opt_imod: + err = au_br_mod(sb, &opt->mod, + au_ftest_opts(opts->flags, REMOUNT), + &do_refresh); + if (!err) { + err = 1; + if (do_refresh) + au_fset_opts(opts->flags, REFRESH); + } + break; + } + return err; +} + +static int au_opt_xino(struct super_block *sb, struct au_opt *opt, + struct au_opt_xino **opt_xino, + struct au_opts *opts) +{ + int err; + aufs_bindex_t bbot, bindex; + struct dentry *root, *parent, *h_root; + + err = 0; + switch (opt->type) { + case Opt_xino: + err = au_xino_set(sb, &opt->xino, + !!au_ftest_opts(opts->flags, REMOUNT)); + if (unlikely(err)) + break; + + *opt_xino = &opt->xino; + au_xino_brid_set(sb, -1); + + /* safe d_parent access */ + parent = opt->xino.file->f_path.dentry->d_parent; + root = sb->s_root; + bbot = au_sbbot(sb); + for (bindex = 0; bindex <= bbot; bindex++) { + h_root = au_h_dptr(root, bindex); + if (h_root == parent) { + au_xino_brid_set(sb, au_sbr_id(sb, bindex)); + break; + } + } + break; + + case Opt_noxino: + au_xino_clr(sb); + au_xino_brid_set(sb, -1); + *opt_xino = (void *)-1; + break; + } + + return err; +} + +int au_opts_verify(struct super_block *sb, unsigned long sb_flags, + unsigned int pending) +{ + int err, fhsm; + aufs_bindex_t bindex, bbot; + unsigned char do_plink, skip, do_free, can_no_dreval; + struct au_branch *br; + struct au_wbr *wbr; + struct dentry *root, *dentry; + struct inode *dir, *h_dir; + struct au_sbinfo *sbinfo; + struct au_hinode *hdir; + + SiMustAnyLock(sb); + + sbinfo = au_sbi(sb); + AuDebugOn(!(sbinfo->si_mntflags & AuOptMask_UDBA)); + + if (!(sb_flags & SB_RDONLY)) { + if (unlikely(!au_br_writable(au_sbr_perm(sb, 0)))) + pr_warn("first branch should be rw\n"); + if (unlikely(au_opt_test(sbinfo->si_mntflags, SHWH))) + pr_warn_once("shwh should be used with ro\n"); + } + + if (au_opt_test((sbinfo->si_mntflags | pending), UDBA_HNOTIFY) + && !au_opt_test(sbinfo->si_mntflags, XINO)) + pr_warn_once("udba=*notify requires xino\n"); + + if (au_opt_test(sbinfo->si_mntflags, DIRPERM1)) + pr_warn_once("dirperm1 breaks the protection" + " by the permission bits on the lower branch\n"); + + err = 0; + fhsm = 0; + root = sb->s_root; + dir = d_inode(root); + do_plink = !!au_opt_test(sbinfo->si_mntflags, PLINK); + can_no_dreval = !!au_opt_test((sbinfo->si_mntflags | pending), + UDBA_NONE); + bbot = au_sbbot(sb); + for (bindex = 0; !err && bindex <= bbot; bindex++) { + skip = 0; + h_dir = au_h_iptr(dir, bindex); + br = au_sbr(sb, bindex); + + if ((br->br_perm & AuBrAttr_ICEX) + && !h_dir->i_op->listxattr) + br->br_perm &= ~AuBrAttr_ICEX; +#if 0 + if ((br->br_perm & AuBrAttr_ICEX_SEC) + && (au_br_sb(br)->s_flags & SB_NOSEC)) + br->br_perm &= ~AuBrAttr_ICEX_SEC; +#endif + + do_free = 0; + wbr = br->br_wbr; + if (wbr) + wbr_wh_read_lock(wbr); + + if (!au_br_writable(br->br_perm)) { + do_free = !!wbr; + skip = (!wbr + || (!wbr->wbr_whbase + && !wbr->wbr_plink + && !wbr->wbr_orph)); + } else if (!au_br_wh_linkable(br->br_perm)) { + /* skip = (!br->br_whbase && !br->br_orph); */ + skip = (!wbr || !wbr->wbr_whbase); + if (skip && wbr) { + if (do_plink) + skip = !!wbr->wbr_plink; + else + skip = !wbr->wbr_plink; + } + } else { + /* skip = (br->br_whbase && br->br_ohph); */ + skip = (wbr && wbr->wbr_whbase); + if (skip) { + if (do_plink) + skip = !!wbr->wbr_plink; + else + skip = !wbr->wbr_plink; + } + } + if (wbr) + wbr_wh_read_unlock(wbr); + + if (can_no_dreval) { + dentry = br->br_path.dentry; + spin_lock(&dentry->d_lock); + if (dentry->d_flags & + (DCACHE_OP_REVALIDATE | DCACHE_OP_WEAK_REVALIDATE)) + can_no_dreval = 0; + spin_unlock(&dentry->d_lock); + } + + if (au_br_fhsm(br->br_perm)) { + fhsm++; + AuDebugOn(!br->br_fhsm); + } + + if (skip) + continue; + + hdir = au_hi(dir, bindex); + au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT); + if (wbr) + wbr_wh_write_lock(wbr); + err = au_wh_init(br, sb); + if (wbr) + wbr_wh_write_unlock(wbr); + au_hn_inode_unlock(hdir); + + if (!err && do_free) { + kfree(wbr); + br->br_wbr = NULL; + } + } + + if (can_no_dreval) + au_fset_si(sbinfo, NO_DREVAL); + else + au_fclr_si(sbinfo, NO_DREVAL); + + if (fhsm >= 2) { + au_fset_si(sbinfo, FHSM); + for (bindex = bbot; bindex >= 0; bindex--) { + br = au_sbr(sb, bindex); + if (au_br_fhsm(br->br_perm)) { + au_fhsm_set_bottom(sb, bindex); + break; + } + } + } else { + au_fclr_si(sbinfo, FHSM); + au_fhsm_set_bottom(sb, -1); + } + + return err; +} + +int au_opts_mount(struct super_block *sb, struct au_opts *opts) +{ + int err; + unsigned int tmp; + aufs_bindex_t bindex, bbot; + struct au_opt *opt; + struct au_opt_xino *opt_xino, xino; + struct au_sbinfo *sbinfo; + struct au_branch *br; + struct inode *dir; + + SiMustWriteLock(sb); + + err = 0; + opt_xino = NULL; + opt = opts->opt; + while (err >= 0 && opt->type != Opt_tail) + err = au_opt_simple(sb, opt++, opts); + if (err > 0) + err = 0; + else if (unlikely(err < 0)) + goto out; + + /* disable xino and udba temporary */ + sbinfo = au_sbi(sb); + tmp = sbinfo->si_mntflags; + au_opt_clr(sbinfo->si_mntflags, XINO); + au_opt_set_udba(sbinfo->si_mntflags, UDBA_REVAL); + + opt = opts->opt; + while (err >= 0 && opt->type != Opt_tail) + err = au_opt_br(sb, opt++, opts); + if (err > 0) + err = 0; + else if (unlikely(err < 0)) + goto out; + + bbot = au_sbbot(sb); + if (unlikely(bbot < 0)) { + err = -EINVAL; + pr_err("no branches\n"); + goto out; + } + + if (au_opt_test(tmp, XINO)) + au_opt_set(sbinfo->si_mntflags, XINO); + opt = opts->opt; + while (!err && opt->type != Opt_tail) + err = au_opt_xino(sb, opt++, &opt_xino, opts); + if (unlikely(err)) + goto out; + + err = au_opts_verify(sb, sb->s_flags, tmp); + if (unlikely(err)) + goto out; + + /* restore xino */ + if (au_opt_test(tmp, XINO) && !opt_xino) { + xino.file = au_xino_def(sb); + err = PTR_ERR(xino.file); + if (IS_ERR(xino.file)) + goto out; + + err = au_xino_set(sb, &xino, /*remount*/0); + fput(xino.file); + if (unlikely(err)) + goto out; + } + + /* restore udba */ + tmp &= AuOptMask_UDBA; + sbinfo->si_mntflags &= ~AuOptMask_UDBA; + sbinfo->si_mntflags |= tmp; + bbot = au_sbbot(sb); + for (bindex = 0; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + err = au_hnotify_reset_br(tmp, br, br->br_perm); + if (unlikely(err)) + AuIOErr("hnotify failed on br %d, %d, ignored\n", + bindex, err); + /* go on even if err */ + } + if (au_opt_test(tmp, UDBA_HNOTIFY)) { + dir = d_inode(sb->s_root); + au_hn_reset(dir, au_hi_flags(dir, /*isdir*/1) & ~AuHi_XINO); + } + +out: + return err; +} + +int au_opts_remount(struct super_block *sb, struct au_opts *opts) +{ + int err, rerr; + unsigned char no_dreval; + struct inode *dir; + struct au_opt_xino *opt_xino; + struct au_opt *opt; + struct au_sbinfo *sbinfo; + + SiMustWriteLock(sb); + + err = au_dr_opt_flush(sb); + if (unlikely(err)) + goto out; + au_fset_opts(opts->flags, DR_FLUSHED); + + dir = d_inode(sb->s_root); + sbinfo = au_sbi(sb); + opt_xino = NULL; + opt = opts->opt; + while (err >= 0 && opt->type != Opt_tail) { + err = au_opt_simple(sb, opt, opts); + if (!err) + err = au_opt_br(sb, opt, opts); + if (!err) + err = au_opt_xino(sb, opt, &opt_xino, opts); + opt++; + } + if (err > 0) + err = 0; + AuTraceErr(err); + /* go on even err */ + + no_dreval = !!au_ftest_si(sbinfo, NO_DREVAL); + rerr = au_opts_verify(sb, opts->sb_flags, /*pending*/0); + if (unlikely(rerr && !err)) + err = rerr; + + if (no_dreval != !!au_ftest_si(sbinfo, NO_DREVAL)) + au_fset_opts(opts->flags, REFRESH_IDOP); + + if (au_ftest_opts(opts->flags, TRUNC_XIB)) { + rerr = au_xib_trunc(sb); + if (unlikely(rerr && !err)) + err = rerr; + } + + /* will be handled by the caller */ + if (!au_ftest_opts(opts->flags, REFRESH) + && (opts->given_udba + || au_opt_test(sbinfo->si_mntflags, XINO) + || au_ftest_opts(opts->flags, REFRESH_IDOP) + )) + au_fset_opts(opts->flags, REFRESH); + + AuDbg("status 0x%x\n", opts->flags); + +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +unsigned int au_opt_udba(struct super_block *sb) +{ + return au_mntflags(sb) & AuOptMask_UDBA; +} diff --git a/include/fs/aufs/opts.h b/include/fs/aufs/opts.h new file mode 100644 index 00000000000..30bda60f7f9 --- /dev/null +++ b/include/fs/aufs/opts.h @@ -0,0 +1,224 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * mount options/flags + */ + +#ifndef __AUFS_OPTS_H__ +#define __AUFS_OPTS_H__ + +#ifdef __KERNEL__ + +#include + +struct file; + +/* ---------------------------------------------------------------------- */ + +/* mount flags */ +#define AuOpt_XINO 1 /* external inode number bitmap + and translation table */ +#define AuOpt_TRUNC_XINO (1 << 1) /* truncate xino files */ +#define AuOpt_UDBA_NONE (1 << 2) /* users direct branch access */ +#define AuOpt_UDBA_REVAL (1 << 3) +#define AuOpt_UDBA_HNOTIFY (1 << 4) +#define AuOpt_SHWH (1 << 5) /* show whiteout */ +#define AuOpt_PLINK (1 << 6) /* pseudo-link */ +#define AuOpt_DIRPERM1 (1 << 7) /* ignore the lower dir's perm + bits */ +#define AuOpt_ALWAYS_DIROPQ (1 << 9) /* policy to creating diropq */ +#define AuOpt_SUM (1 << 10) /* summation for statfs(2) */ +#define AuOpt_SUM_W (1 << 11) /* unimplemented */ +#define AuOpt_WARN_PERM (1 << 12) /* warn when add-branch */ +#define AuOpt_VERBOSE (1 << 13) /* busy inode when del-branch */ +#define AuOpt_DIO (1 << 14) /* direct io */ +#define AuOpt_DIRREN (1 << 15) /* directory rename */ + +#ifndef CONFIG_AUFS_HNOTIFY +#undef AuOpt_UDBA_HNOTIFY +#define AuOpt_UDBA_HNOTIFY 0 +#endif +#ifndef CONFIG_AUFS_DIRREN +#undef AuOpt_DIRREN +#define AuOpt_DIRREN 0 +#endif +#ifndef CONFIG_AUFS_SHWH +#undef AuOpt_SHWH +#define AuOpt_SHWH 0 +#endif + +#define AuOpt_Def (AuOpt_XINO \ + | AuOpt_UDBA_REVAL \ + | AuOpt_PLINK \ + /* | AuOpt_DIRPERM1 */ \ + | AuOpt_WARN_PERM) +#define AuOptMask_UDBA (AuOpt_UDBA_NONE \ + | AuOpt_UDBA_REVAL \ + | AuOpt_UDBA_HNOTIFY) + +#define au_opt_test(flags, name) (flags & AuOpt_##name) +#define au_opt_set(flags, name) do { \ + BUILD_BUG_ON(AuOpt_##name & AuOptMask_UDBA); \ + ((flags) |= AuOpt_##name); \ +} while (0) +#define au_opt_set_udba(flags, name) do { \ + (flags) &= ~AuOptMask_UDBA; \ + ((flags) |= AuOpt_##name); \ +} while (0) +#define au_opt_clr(flags, name) do { \ + ((flags) &= ~AuOpt_##name); \ +} while (0) + +static inline unsigned int au_opts_plink(unsigned int mntflags) +{ +#ifdef CONFIG_PROC_FS + return mntflags; +#else + return mntflags & ~AuOpt_PLINK; +#endif +} + +/* ---------------------------------------------------------------------- */ + +/* policies to select one among multiple writable branches */ +enum { + AuWbrCreate_TDP, /* top down parent */ + AuWbrCreate_RR, /* round robin */ + AuWbrCreate_MFS, /* most free space */ + AuWbrCreate_MFSV, /* mfs with seconds */ + AuWbrCreate_MFSRR, /* mfs then rr */ + AuWbrCreate_MFSRRV, /* mfs then rr with seconds */ + AuWbrCreate_TDMFS, /* top down regardless parent and mfs */ + AuWbrCreate_TDMFSV, /* top down regardless parent and mfs */ + AuWbrCreate_PMFS, /* parent and mfs */ + AuWbrCreate_PMFSV, /* parent and mfs with seconds */ + AuWbrCreate_PMFSRR, /* parent, mfs and round-robin */ + AuWbrCreate_PMFSRRV, /* plus seconds */ + + AuWbrCreate_Def = AuWbrCreate_TDP +}; + +enum { + AuWbrCopyup_TDP, /* top down parent */ + AuWbrCopyup_BUP, /* bottom up parent */ + AuWbrCopyup_BU, /* bottom up */ + + AuWbrCopyup_Def = AuWbrCopyup_TDP +}; + +/* ---------------------------------------------------------------------- */ + +struct au_opt_add { + aufs_bindex_t bindex; + char *pathname; + int perm; + struct path path; +}; + +struct au_opt_del { + char *pathname; + struct path h_path; +}; + +struct au_opt_mod { + char *path; + int perm; + struct dentry *h_root; +}; + +struct au_opt_xino { + char *path; + struct file *file; +}; + +struct au_opt_xino_itrunc { + aufs_bindex_t bindex; +}; + +struct au_opt_wbr_create { + int wbr_create; + int mfs_second; + unsigned long long mfsrr_watermark; +}; + +struct au_opt { + int type; + union { + struct au_opt_xino xino; + struct au_opt_xino_itrunc xino_itrunc; + struct au_opt_add add; + struct au_opt_del del; + struct au_opt_mod mod; + int dirwh; + int rdcache; + unsigned int rdblk; + unsigned int rdhash; + int udba; + struct au_opt_wbr_create wbr_create; + int wbr_copyup; + unsigned int fhsm_second; + }; +}; + +/* opts flags */ +#define AuOpts_REMOUNT 1 +#define AuOpts_REFRESH (1 << 1) +#define AuOpts_TRUNC_XIB (1 << 2) +#define AuOpts_REFRESH_DYAOP (1 << 3) +#define AuOpts_REFRESH_IDOP (1 << 4) +#define AuOpts_DR_FLUSHED (1 << 5) +#define au_ftest_opts(flags, name) ((flags) & AuOpts_##name) +#define au_fset_opts(flags, name) \ + do { (flags) |= AuOpts_##name; } while (0) +#define au_fclr_opts(flags, name) \ + do { (flags) &= ~AuOpts_##name; } while (0) + +#ifndef CONFIG_AUFS_DIRREN +#undef AuOpts_DR_FLUSHED +#define AuOpts_DR_FLUSHED 0 +#endif + +struct au_opts { + struct au_opt *opt; + int max_opt; + + unsigned int given_udba; + unsigned int flags; + unsigned long sb_flags; +}; + +/* ---------------------------------------------------------------------- */ + +/* opts.c */ +void au_optstr_br_perm(au_br_perm_str_t *str, int perm); +const char *au_optstr_udba(int udba); +const char *au_optstr_wbr_copyup(int wbr_copyup); +const char *au_optstr_wbr_create(int wbr_create); + +void au_opts_free(struct au_opts *opts); +struct super_block; +int au_opts_parse(struct super_block *sb, char *str, struct au_opts *opts); +int au_opts_verify(struct super_block *sb, unsigned long sb_flags, + unsigned int pending); +int au_opts_mount(struct super_block *sb, struct au_opts *opts); +int au_opts_remount(struct super_block *sb, struct au_opts *opts); + +unsigned int au_opt_udba(struct super_block *sb); + +#endif /* __KERNEL__ */ +#endif /* __AUFS_OPTS_H__ */ diff --git a/include/fs/aufs/plink.c b/include/fs/aufs/plink.c new file mode 100644 index 00000000000..9ad02300433 --- /dev/null +++ b/include/fs/aufs/plink.c @@ -0,0 +1,515 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * pseudo-link + */ + +#include "aufs.h" + +/* + * the pseudo-link maintenance mode. + * during a user process maintains the pseudo-links, + * prohibit adding a new plink and branch manipulation. + * + * Flags + * NOPLM: + * For entry functions which will handle plink, and i_mutex is already held + * in VFS. + * They cannot wait and should return an error at once. + * Callers has to check the error. + * NOPLMW: + * For entry functions which will handle plink, but i_mutex is not held + * in VFS. + * They can wait the plink maintenance mode to finish. + * + * They behave like F_SETLK and F_SETLKW. + * If the caller never handle plink, then both flags are unnecessary. + */ + +int au_plink_maint(struct super_block *sb, int flags) +{ + int err; + pid_t pid, ppid; + struct task_struct *parent, *prev; + struct au_sbinfo *sbi; + + SiMustAnyLock(sb); + + err = 0; + if (!au_opt_test(au_mntflags(sb), PLINK)) + goto out; + + sbi = au_sbi(sb); + pid = sbi->si_plink_maint_pid; + if (!pid || pid == current->pid) + goto out; + + /* todo: it highly depends upon /sbin/mount.aufs */ + prev = NULL; + parent = current; + ppid = 0; + rcu_read_lock(); + while (1) { + parent = rcu_dereference(parent->real_parent); + if (parent == prev) + break; + ppid = task_pid_vnr(parent); + if (pid == ppid) { + rcu_read_unlock(); + goto out; + } + prev = parent; + } + rcu_read_unlock(); + + if (au_ftest_lock(flags, NOPLMW)) { + /* if there is no i_mutex lock in VFS, we don't need to wait */ + /* AuDebugOn(!lockdep_depth(current)); */ + while (sbi->si_plink_maint_pid) { + si_read_unlock(sb); + /* gave up wake_up_bit() */ + wait_event(sbi->si_plink_wq, !sbi->si_plink_maint_pid); + + if (au_ftest_lock(flags, FLUSH)) + au_nwt_flush(&sbi->si_nowait); + si_noflush_read_lock(sb); + } + } else if (au_ftest_lock(flags, NOPLM)) { + AuDbg("ppid %d, pid %d\n", ppid, pid); + err = -EAGAIN; + } + +out: + return err; +} + +void au_plink_maint_leave(struct au_sbinfo *sbinfo) +{ + spin_lock(&sbinfo->si_plink_maint_lock); + sbinfo->si_plink_maint_pid = 0; + spin_unlock(&sbinfo->si_plink_maint_lock); + wake_up_all(&sbinfo->si_plink_wq); +} + +int au_plink_maint_enter(struct super_block *sb) +{ + int err; + struct au_sbinfo *sbinfo; + + err = 0; + sbinfo = au_sbi(sb); + /* make sure i am the only one in this fs */ + si_write_lock(sb, AuLock_FLUSH); + if (au_opt_test(au_mntflags(sb), PLINK)) { + spin_lock(&sbinfo->si_plink_maint_lock); + if (!sbinfo->si_plink_maint_pid) + sbinfo->si_plink_maint_pid = current->pid; + else + err = -EBUSY; + spin_unlock(&sbinfo->si_plink_maint_lock); + } + si_write_unlock(sb); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +#ifdef CONFIG_AUFS_DEBUG +void au_plink_list(struct super_block *sb) +{ + int i; + struct au_sbinfo *sbinfo; + struct hlist_bl_head *hbl; + struct hlist_bl_node *pos; + struct au_icntnr *icntnr; + + SiMustAnyLock(sb); + + sbinfo = au_sbi(sb); + AuDebugOn(!au_opt_test(au_mntflags(sb), PLINK)); + AuDebugOn(au_plink_maint(sb, AuLock_NOPLM)); + + for (i = 0; i < AuPlink_NHASH; i++) { + hbl = sbinfo->si_plink + i; + hlist_bl_lock(hbl); + hlist_bl_for_each_entry(icntnr, pos, hbl, plink) + AuDbg("%lu\n", icntnr->vfs_inode.i_ino); + hlist_bl_unlock(hbl); + } +} +#endif + +/* is the inode pseudo-linked? */ +int au_plink_test(struct inode *inode) +{ + int found, i; + struct au_sbinfo *sbinfo; + struct hlist_bl_head *hbl; + struct hlist_bl_node *pos; + struct au_icntnr *icntnr; + + sbinfo = au_sbi(inode->i_sb); + AuRwMustAnyLock(&sbinfo->si_rwsem); + AuDebugOn(!au_opt_test(au_mntflags(inode->i_sb), PLINK)); + AuDebugOn(au_plink_maint(inode->i_sb, AuLock_NOPLM)); + + found = 0; + i = au_plink_hash(inode->i_ino); + hbl = sbinfo->si_plink + i; + hlist_bl_lock(hbl); + hlist_bl_for_each_entry(icntnr, pos, hbl, plink) + if (&icntnr->vfs_inode == inode) { + found = 1; + break; + } + hlist_bl_unlock(hbl); + return found; +} + +/* ---------------------------------------------------------------------- */ + +/* + * generate a name for plink. + * the file will be stored under AUFS_WH_PLINKDIR. + */ +/* 20 is max digits length of ulong 64 */ +#define PLINK_NAME_LEN ((20 + 1) * 2) + +static int plink_name(char *name, int len, struct inode *inode, + aufs_bindex_t bindex) +{ + int rlen; + struct inode *h_inode; + + h_inode = au_h_iptr(inode, bindex); + rlen = snprintf(name, len, "%lu.%lu", inode->i_ino, h_inode->i_ino); + return rlen; +} + +struct au_do_plink_lkup_args { + struct dentry **errp; + struct qstr *tgtname; + struct dentry *h_parent; + struct au_branch *br; +}; + +static struct dentry *au_do_plink_lkup(struct qstr *tgtname, + struct dentry *h_parent, + struct au_branch *br) +{ + struct dentry *h_dentry; + struct inode *h_inode; + + h_inode = d_inode(h_parent); + vfsub_inode_lock_shared_nested(h_inode, AuLsc_I_CHILD2); + h_dentry = vfsub_lkup_one(tgtname, h_parent); + inode_unlock_shared(h_inode); + return h_dentry; +} + +static void au_call_do_plink_lkup(void *args) +{ + struct au_do_plink_lkup_args *a = args; + *a->errp = au_do_plink_lkup(a->tgtname, a->h_parent, a->br); +} + +/* lookup the plink-ed @inode under the branch at @bindex */ +struct dentry *au_plink_lkup(struct inode *inode, aufs_bindex_t bindex) +{ + struct dentry *h_dentry, *h_parent; + struct au_branch *br; + int wkq_err; + char a[PLINK_NAME_LEN]; + struct qstr tgtname = QSTR_INIT(a, 0); + + AuDebugOn(au_plink_maint(inode->i_sb, AuLock_NOPLM)); + + br = au_sbr(inode->i_sb, bindex); + h_parent = br->br_wbr->wbr_plink; + tgtname.len = plink_name(a, sizeof(a), inode, bindex); + + if (!uid_eq(current_fsuid(), GLOBAL_ROOT_UID)) { + struct au_do_plink_lkup_args args = { + .errp = &h_dentry, + .tgtname = &tgtname, + .h_parent = h_parent, + .br = br + }; + + wkq_err = au_wkq_wait(au_call_do_plink_lkup, &args); + if (unlikely(wkq_err)) + h_dentry = ERR_PTR(wkq_err); + } else + h_dentry = au_do_plink_lkup(&tgtname, h_parent, br); + + return h_dentry; +} + +/* create a pseudo-link */ +static int do_whplink(struct qstr *tgt, struct dentry *h_parent, + struct dentry *h_dentry, struct au_branch *br) +{ + int err; + struct path h_path = { + .mnt = au_br_mnt(br) + }; + struct inode *h_dir, *delegated; + + h_dir = d_inode(h_parent); + inode_lock_nested(h_dir, AuLsc_I_CHILD2); +again: + h_path.dentry = vfsub_lkup_one(tgt, h_parent); + err = PTR_ERR(h_path.dentry); + if (IS_ERR(h_path.dentry)) + goto out; + + err = 0; + /* wh.plink dir is not monitored */ + /* todo: is it really safe? */ + if (d_is_positive(h_path.dentry) + && d_inode(h_path.dentry) != d_inode(h_dentry)) { + delegated = NULL; + err = vfsub_unlink(h_dir, &h_path, &delegated, /*force*/0); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal unlink\n"); + iput(delegated); + } + dput(h_path.dentry); + h_path.dentry = NULL; + if (!err) + goto again; + } + if (!err && d_is_negative(h_path.dentry)) { + delegated = NULL; + err = vfsub_link(h_dentry, h_dir, &h_path, &delegated); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal link\n"); + iput(delegated); + } + } + dput(h_path.dentry); + +out: + inode_unlock(h_dir); + return err; +} + +struct do_whplink_args { + int *errp; + struct qstr *tgt; + struct dentry *h_parent; + struct dentry *h_dentry; + struct au_branch *br; +}; + +static void call_do_whplink(void *args) +{ + struct do_whplink_args *a = args; + *a->errp = do_whplink(a->tgt, a->h_parent, a->h_dentry, a->br); +} + +static int whplink(struct dentry *h_dentry, struct inode *inode, + aufs_bindex_t bindex, struct au_branch *br) +{ + int err, wkq_err; + struct au_wbr *wbr; + struct dentry *h_parent; + char a[PLINK_NAME_LEN]; + struct qstr tgtname = QSTR_INIT(a, 0); + + wbr = au_sbr(inode->i_sb, bindex)->br_wbr; + h_parent = wbr->wbr_plink; + tgtname.len = plink_name(a, sizeof(a), inode, bindex); + + /* always superio. */ + if (!uid_eq(current_fsuid(), GLOBAL_ROOT_UID)) { + struct do_whplink_args args = { + .errp = &err, + .tgt = &tgtname, + .h_parent = h_parent, + .h_dentry = h_dentry, + .br = br + }; + wkq_err = au_wkq_wait(call_do_whplink, &args); + if (unlikely(wkq_err)) + err = wkq_err; + } else + err = do_whplink(&tgtname, h_parent, h_dentry, br); + + return err; +} + +/* + * create a new pseudo-link for @h_dentry on @bindex. + * the linked inode is held in aufs @inode. + */ +void au_plink_append(struct inode *inode, aufs_bindex_t bindex, + struct dentry *h_dentry) +{ + struct super_block *sb; + struct au_sbinfo *sbinfo; + struct hlist_bl_head *hbl; + struct hlist_bl_node *pos; + struct au_icntnr *icntnr; + int found, err, cnt, i; + + sb = inode->i_sb; + sbinfo = au_sbi(sb); + AuDebugOn(!au_opt_test(au_mntflags(sb), PLINK)); + AuDebugOn(au_plink_maint(sb, AuLock_NOPLM)); + + found = au_plink_test(inode); + if (found) + return; + + i = au_plink_hash(inode->i_ino); + hbl = sbinfo->si_plink + i; + au_igrab(inode); + + hlist_bl_lock(hbl); + hlist_bl_for_each_entry(icntnr, pos, hbl, plink) { + if (&icntnr->vfs_inode == inode) { + found = 1; + break; + } + } + if (!found) { + icntnr = container_of(inode, struct au_icntnr, vfs_inode); + hlist_bl_add_head(&icntnr->plink, hbl); + } + hlist_bl_unlock(hbl); + if (!found) { + cnt = au_hbl_count(hbl); +#define msg "unexpectedly unblanced or too many pseudo-links" + if (cnt > AUFS_PLINK_WARN) + AuWarn1(msg ", %d\n", cnt); +#undef msg + err = whplink(h_dentry, inode, bindex, au_sbr(sb, bindex)); + if (unlikely(err)) { + pr_warn("err %d, damaged pseudo link.\n", err); + au_hbl_del(&icntnr->plink, hbl); + iput(&icntnr->vfs_inode); + } + } else + iput(&icntnr->vfs_inode); +} + +/* free all plinks */ +void au_plink_put(struct super_block *sb, int verbose) +{ + int i, warned; + struct au_sbinfo *sbinfo; + struct hlist_bl_head *hbl; + struct hlist_bl_node *pos, *tmp; + struct au_icntnr *icntnr; + + SiMustWriteLock(sb); + + sbinfo = au_sbi(sb); + AuDebugOn(!au_opt_test(au_mntflags(sb), PLINK)); + AuDebugOn(au_plink_maint(sb, AuLock_NOPLM)); + + /* no spin_lock since sbinfo is write-locked */ + warned = 0; + for (i = 0; i < AuPlink_NHASH; i++) { + hbl = sbinfo->si_plink + i; + if (!warned && verbose && !hlist_bl_empty(hbl)) { + pr_warn("pseudo-link is not flushed"); + warned = 1; + } + hlist_bl_for_each_entry_safe(icntnr, pos, tmp, hbl, plink) + iput(&icntnr->vfs_inode); + INIT_HLIST_BL_HEAD(hbl); + } +} + +void au_plink_clean(struct super_block *sb, int verbose) +{ + struct dentry *root; + + root = sb->s_root; + aufs_write_lock(root); + if (au_opt_test(au_mntflags(sb), PLINK)) + au_plink_put(sb, verbose); + aufs_write_unlock(root); +} + +static int au_plink_do_half_refresh(struct inode *inode, aufs_bindex_t br_id) +{ + int do_put; + aufs_bindex_t btop, bbot, bindex; + + do_put = 0; + btop = au_ibtop(inode); + bbot = au_ibbot(inode); + if (btop >= 0) { + for (bindex = btop; bindex <= bbot; bindex++) { + if (!au_h_iptr(inode, bindex) + || au_ii_br_id(inode, bindex) != br_id) + continue; + au_set_h_iptr(inode, bindex, NULL, 0); + do_put = 1; + break; + } + if (do_put) + for (bindex = btop; bindex <= bbot; bindex++) + if (au_h_iptr(inode, bindex)) { + do_put = 0; + break; + } + } else + do_put = 1; + + return do_put; +} + +/* free the plinks on a branch specified by @br_id */ +void au_plink_half_refresh(struct super_block *sb, aufs_bindex_t br_id) +{ + struct au_sbinfo *sbinfo; + struct hlist_bl_head *hbl; + struct hlist_bl_node *pos, *tmp; + struct au_icntnr *icntnr; + struct inode *inode; + int i, do_put; + + SiMustWriteLock(sb); + + sbinfo = au_sbi(sb); + AuDebugOn(!au_opt_test(au_mntflags(sb), PLINK)); + AuDebugOn(au_plink_maint(sb, AuLock_NOPLM)); + + /* no bit_lock since sbinfo is write-locked */ + for (i = 0; i < AuPlink_NHASH; i++) { + hbl = sbinfo->si_plink + i; + hlist_bl_for_each_entry_safe(icntnr, pos, tmp, hbl, plink) { + inode = au_igrab(&icntnr->vfs_inode); + ii_write_lock_child(inode); + do_put = au_plink_do_half_refresh(inode, br_id); + if (do_put) { + hlist_bl_del(&icntnr->plink); + iput(inode); + } + ii_write_unlock(inode); + iput(inode); + } + } +} diff --git a/include/fs/aufs/poll.c b/include/fs/aufs/poll.c new file mode 100644 index 00000000000..ee5aa0b05e9 --- /dev/null +++ b/include/fs/aufs/poll.c @@ -0,0 +1,53 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * poll operation + * There is only one filesystem which implements ->poll operation, currently. + */ + +#include "aufs.h" + +unsigned int aufs_poll(struct file *file, poll_table *wait) +{ + unsigned int mask; + int err; + struct file *h_file; + struct super_block *sb; + + /* We should pretend an error happened. */ + mask = POLLERR /* | POLLIN | POLLOUT */; + sb = file->f_path.dentry->d_sb; + si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW); + + h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0); + err = PTR_ERR(h_file); + if (IS_ERR(h_file)) + goto out; + + /* it is not an error if h_file has no operation */ + mask = DEFAULT_POLLMASK; + if (h_file->f_op->poll) + mask = h_file->f_op->poll(h_file, wait); + fput(h_file); /* instead of au_read_post() */ + +out: + si_read_unlock(sb); + if (mask & POLLERR) + AuDbg("mask 0x%x\n", mask); + return mask; +} diff --git a/include/fs/aufs/posix_acl.c b/include/fs/aufs/posix_acl.c new file mode 100644 index 00000000000..bbd7aa2ec60 --- /dev/null +++ b/include/fs/aufs/posix_acl.c @@ -0,0 +1,102 @@ +/* + * Copyright (C) 2014-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * posix acl operations + */ + +#include +#include "aufs.h" + +struct posix_acl *aufs_get_acl(struct inode *inode, int type) +{ + struct posix_acl *acl; + int err; + aufs_bindex_t bindex; + struct inode *h_inode; + struct super_block *sb; + + acl = NULL; + sb = inode->i_sb; + si_read_lock(sb, AuLock_FLUSH); + ii_read_lock_child(inode); + if (!(sb->s_flags & SB_POSIXACL)) + goto out; + + bindex = au_ibtop(inode); + h_inode = au_h_iptr(inode, bindex); + if (unlikely(!h_inode + || ((h_inode->i_mode & S_IFMT) + != (inode->i_mode & S_IFMT)))) { + err = au_busy_or_stale(); + acl = ERR_PTR(err); + goto out; + } + + /* always topmost only */ + acl = get_acl(h_inode, type); + if (!IS_ERR_OR_NULL(acl)) + set_cached_acl(inode, type, acl); + +out: + ii_read_unlock(inode); + si_read_unlock(sb); + + AuTraceErrPtr(acl); + return acl; +} + +int aufs_set_acl(struct inode *inode, struct posix_acl *acl, int type) +{ + int err; + ssize_t ssz; + struct dentry *dentry; + struct au_sxattr arg = { + .type = AU_ACL_SET, + .u.acl_set = { + .acl = acl, + .type = type + }, + }; + + IMustLock(inode); + + if (inode->i_ino == AUFS_ROOT_INO) + dentry = dget(inode->i_sb->s_root); + else { + dentry = d_find_alias(inode); + if (!dentry) + dentry = d_find_any_alias(inode); + if (!dentry) { + pr_warn("cannot handle this inode, " + "please report to aufs-users ML\n"); + err = -ENOENT; + goto out; + } + } + + ssz = au_sxattr(dentry, inode, &arg); + dput(dentry); + err = ssz; + if (ssz >= 0) { + err = 0; + set_cached_acl(inode, type, acl); + } + +out: + return err; +} diff --git a/include/fs/aufs/procfs.c b/include/fs/aufs/procfs.c new file mode 100644 index 00000000000..6201739c6e6 --- /dev/null +++ b/include/fs/aufs/procfs.c @@ -0,0 +1,170 @@ +/* + * Copyright (C) 2010-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * procfs interfaces + */ + +#include +#include "aufs.h" + +static int au_procfs_plm_release(struct inode *inode, struct file *file) +{ + struct au_sbinfo *sbinfo; + + sbinfo = file->private_data; + if (sbinfo) { + au_plink_maint_leave(sbinfo); + kobject_put(&sbinfo->si_kobj); + } + + return 0; +} + +static void au_procfs_plm_write_clean(struct file *file) +{ + struct au_sbinfo *sbinfo; + + sbinfo = file->private_data; + if (sbinfo) + au_plink_clean(sbinfo->si_sb, /*verbose*/0); +} + +static int au_procfs_plm_write_si(struct file *file, unsigned long id) +{ + int err; + struct super_block *sb; + struct au_sbinfo *sbinfo; + struct hlist_bl_node *pos; + + err = -EBUSY; + if (unlikely(file->private_data)) + goto out; + + sb = NULL; + /* don't use au_sbilist_lock() here */ + hlist_bl_lock(&au_sbilist); + hlist_bl_for_each_entry(sbinfo, pos, &au_sbilist, si_list) + if (id == sysaufs_si_id(sbinfo)) { + kobject_get(&sbinfo->si_kobj); + sb = sbinfo->si_sb; + break; + } + hlist_bl_unlock(&au_sbilist); + + err = -EINVAL; + if (unlikely(!sb)) + goto out; + + err = au_plink_maint_enter(sb); + if (!err) + /* keep kobject_get() */ + file->private_data = sbinfo; + else + kobject_put(&sbinfo->si_kobj); +out: + return err; +} + +/* + * Accept a valid "si=xxxx" only. + * Once it is accepted successfully, accept "clean" too. + */ +static ssize_t au_procfs_plm_write(struct file *file, const char __user *ubuf, + size_t count, loff_t *ppos) +{ + ssize_t err; + unsigned long id; + /* last newline is allowed */ + char buf[3 + sizeof(unsigned long) * 2 + 1]; + + err = -EACCES; + if (unlikely(!capable(CAP_SYS_ADMIN))) + goto out; + + err = -EINVAL; + if (unlikely(count > sizeof(buf))) + goto out; + + err = copy_from_user(buf, ubuf, count); + if (unlikely(err)) { + err = -EFAULT; + goto out; + } + buf[count] = 0; + + err = -EINVAL; + if (!strcmp("clean", buf)) { + au_procfs_plm_write_clean(file); + goto out_success; + } else if (unlikely(strncmp("si=", buf, 3))) + goto out; + + err = kstrtoul(buf + 3, 16, &id); + if (unlikely(err)) + goto out; + + err = au_procfs_plm_write_si(file, id); + if (unlikely(err)) + goto out; + +out_success: + err = count; /* success */ +out: + return err; +} + +static const struct file_operations au_procfs_plm_fop = { + .write = au_procfs_plm_write, + .release = au_procfs_plm_release, + .owner = THIS_MODULE +}; + +/* ---------------------------------------------------------------------- */ + +static struct proc_dir_entry *au_procfs_dir; + +void au_procfs_fin(void) +{ + remove_proc_entry(AUFS_PLINK_MAINT_NAME, au_procfs_dir); + remove_proc_entry(AUFS_PLINK_MAINT_DIR, NULL); +} + +int __init au_procfs_init(void) +{ + int err; + struct proc_dir_entry *entry; + + err = -ENOMEM; + au_procfs_dir = proc_mkdir(AUFS_PLINK_MAINT_DIR, NULL); + if (unlikely(!au_procfs_dir)) + goto out; + + entry = proc_create(AUFS_PLINK_MAINT_NAME, S_IFREG | S_IWUSR, + au_procfs_dir, &au_procfs_plm_fop); + if (unlikely(!entry)) + goto out_dir; + + err = 0; + goto out; /* success */ + + +out_dir: + remove_proc_entry(AUFS_PLINK_MAINT_DIR, NULL); +out: + return err; +} diff --git a/include/fs/aufs/rdu.c b/include/fs/aufs/rdu.c new file mode 100644 index 00000000000..f6a10f55373 --- /dev/null +++ b/include/fs/aufs/rdu.c @@ -0,0 +1,381 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * readdir in userspace. + */ + +#include +#include +#include +#include "aufs.h" + +/* bits for struct aufs_rdu.flags */ +#define AuRdu_CALLED 1 +#define AuRdu_CONT (1 << 1) +#define AuRdu_FULL (1 << 2) +#define au_ftest_rdu(flags, name) ((flags) & AuRdu_##name) +#define au_fset_rdu(flags, name) \ + do { (flags) |= AuRdu_##name; } while (0) +#define au_fclr_rdu(flags, name) \ + do { (flags) &= ~AuRdu_##name; } while (0) + +struct au_rdu_arg { + struct dir_context ctx; + struct aufs_rdu *rdu; + union au_rdu_ent_ul ent; + unsigned long end; + + struct super_block *sb; + int err; +}; + +static int au_rdu_fill(struct dir_context *ctx, const char *name, int nlen, + loff_t offset, u64 h_ino, unsigned int d_type) +{ + int err, len; + struct au_rdu_arg *arg = container_of(ctx, struct au_rdu_arg, ctx); + struct aufs_rdu *rdu = arg->rdu; + struct au_rdu_ent ent; + + err = 0; + arg->err = 0; + au_fset_rdu(rdu->cookie.flags, CALLED); + len = au_rdu_len(nlen); + if (arg->ent.ul + len < arg->end) { + ent.ino = h_ino; + ent.bindex = rdu->cookie.bindex; + ent.type = d_type; + ent.nlen = nlen; + if (unlikely(nlen > AUFS_MAX_NAMELEN)) + ent.type = DT_UNKNOWN; + + /* unnecessary to support mmap_sem since this is a dir */ + err = -EFAULT; + if (copy_to_user(arg->ent.e, &ent, sizeof(ent))) + goto out; + if (copy_to_user(arg->ent.e->name, name, nlen)) + goto out; + /* the terminating NULL */ + if (__put_user(0, arg->ent.e->name + nlen)) + goto out; + err = 0; + /* AuDbg("%p, %.*s\n", arg->ent.p, nlen, name); */ + arg->ent.ul += len; + rdu->rent++; + } else { + err = -EFAULT; + au_fset_rdu(rdu->cookie.flags, FULL); + rdu->full = 1; + rdu->tail = arg->ent; + } + +out: + /* AuTraceErr(err); */ + return err; +} + +static int au_rdu_do(struct file *h_file, struct au_rdu_arg *arg) +{ + int err; + loff_t offset; + struct au_rdu_cookie *cookie = &arg->rdu->cookie; + + /* we don't have to care (FMODE_32BITHASH | FMODE_64BITHASH) for ext4 */ + offset = vfsub_llseek(h_file, cookie->h_pos, SEEK_SET); + err = offset; + if (unlikely(offset != cookie->h_pos)) + goto out; + + err = 0; + do { + arg->err = 0; + au_fclr_rdu(cookie->flags, CALLED); + /* smp_mb(); */ + err = vfsub_iterate_dir(h_file, &arg->ctx); + if (err >= 0) + err = arg->err; + } while (!err + && au_ftest_rdu(cookie->flags, CALLED) + && !au_ftest_rdu(cookie->flags, FULL)); + cookie->h_pos = h_file->f_pos; + +out: + AuTraceErr(err); + return err; +} + +static int au_rdu(struct file *file, struct aufs_rdu *rdu) +{ + int err; + aufs_bindex_t bbot; + struct au_rdu_arg arg = { + .ctx = { + .actor = au_rdu_fill + } + }; + struct dentry *dentry; + struct inode *inode; + struct file *h_file; + struct au_rdu_cookie *cookie = &rdu->cookie; + + err = !access_ok(VERIFY_WRITE, rdu->ent.e, rdu->sz); + if (unlikely(err)) { + err = -EFAULT; + AuTraceErr(err); + goto out; + } + rdu->rent = 0; + rdu->tail = rdu->ent; + rdu->full = 0; + arg.rdu = rdu; + arg.ent = rdu->ent; + arg.end = arg.ent.ul; + arg.end += rdu->sz; + + err = -ENOTDIR; + if (unlikely(!file->f_op->iterate && !file->f_op->iterate_shared)) + goto out; + + err = security_file_permission(file, MAY_READ); + AuTraceErr(err); + if (unlikely(err)) + goto out; + + dentry = file->f_path.dentry; + inode = d_inode(dentry); + inode_lock_shared(inode); + + arg.sb = inode->i_sb; + err = si_read_lock(arg.sb, AuLock_FLUSH | AuLock_NOPLM); + if (unlikely(err)) + goto out_mtx; + err = au_alive_dir(dentry); + if (unlikely(err)) + goto out_si; + /* todo: reval? */ + fi_read_lock(file); + + err = -EAGAIN; + if (unlikely(au_ftest_rdu(cookie->flags, CONT) + && cookie->generation != au_figen(file))) + goto out_unlock; + + err = 0; + if (!rdu->blk) { + rdu->blk = au_sbi(arg.sb)->si_rdblk; + if (!rdu->blk) + rdu->blk = au_dir_size(file, /*dentry*/NULL); + } + bbot = au_fbtop(file); + if (cookie->bindex < bbot) + cookie->bindex = bbot; + bbot = au_fbbot_dir(file); + /* AuDbg("b%d, b%d\n", cookie->bindex, bbot); */ + for (; !err && cookie->bindex <= bbot; + cookie->bindex++, cookie->h_pos = 0) { + h_file = au_hf_dir(file, cookie->bindex); + if (!h_file) + continue; + + au_fclr_rdu(cookie->flags, FULL); + err = au_rdu_do(h_file, &arg); + AuTraceErr(err); + if (unlikely(au_ftest_rdu(cookie->flags, FULL) || err)) + break; + } + AuDbg("rent %llu\n", rdu->rent); + + if (!err && !au_ftest_rdu(cookie->flags, CONT)) { + rdu->shwh = !!au_opt_test(au_sbi(arg.sb)->si_mntflags, SHWH); + au_fset_rdu(cookie->flags, CONT); + cookie->generation = au_figen(file); + } + + ii_read_lock_child(inode); + fsstack_copy_attr_atime(inode, au_h_iptr(inode, au_ibtop(inode))); + ii_read_unlock(inode); + +out_unlock: + fi_read_unlock(file); +out_si: + si_read_unlock(arg.sb); +out_mtx: + inode_unlock_shared(inode); +out: + AuTraceErr(err); + return err; +} + +static int au_rdu_ino(struct file *file, struct aufs_rdu *rdu) +{ + int err; + ino_t ino; + unsigned long long nent; + union au_rdu_ent_ul *u; + struct au_rdu_ent ent; + struct super_block *sb; + + err = 0; + nent = rdu->nent; + u = &rdu->ent; + sb = file->f_path.dentry->d_sb; + si_read_lock(sb, AuLock_FLUSH); + while (nent-- > 0) { + /* unnecessary to support mmap_sem since this is a dir */ + err = copy_from_user(&ent, u->e, sizeof(ent)); + if (!err) + err = !access_ok(VERIFY_WRITE, &u->e->ino, sizeof(ino)); + if (unlikely(err)) { + err = -EFAULT; + AuTraceErr(err); + break; + } + + /* AuDbg("b%d, i%llu\n", ent.bindex, ent.ino); */ + if (!ent.wh) + err = au_ino(sb, ent.bindex, ent.ino, ent.type, &ino); + else + err = au_wh_ino(sb, ent.bindex, ent.ino, ent.type, + &ino); + if (unlikely(err)) { + AuTraceErr(err); + break; + } + + err = __put_user(ino, &u->e->ino); + if (unlikely(err)) { + err = -EFAULT; + AuTraceErr(err); + break; + } + u->ul += au_rdu_len(ent.nlen); + } + si_read_unlock(sb); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int au_rdu_verify(struct aufs_rdu *rdu) +{ + AuDbg("rdu{%llu, %p, %u | %u | %llu, %u, %u | " + "%llu, b%d, 0x%x, g%u}\n", + rdu->sz, rdu->ent.e, rdu->verify[AufsCtlRduV_SZ], + rdu->blk, + rdu->rent, rdu->shwh, rdu->full, + rdu->cookie.h_pos, rdu->cookie.bindex, rdu->cookie.flags, + rdu->cookie.generation); + + if (rdu->verify[AufsCtlRduV_SZ] == sizeof(*rdu)) + return 0; + + AuDbg("%u:%u\n", + rdu->verify[AufsCtlRduV_SZ], (unsigned int)sizeof(*rdu)); + return -EINVAL; +} + +long au_rdu_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + long err, e; + struct aufs_rdu rdu; + void __user *p = (void __user *)arg; + + err = copy_from_user(&rdu, p, sizeof(rdu)); + if (unlikely(err)) { + err = -EFAULT; + AuTraceErr(err); + goto out; + } + err = au_rdu_verify(&rdu); + if (unlikely(err)) + goto out; + + switch (cmd) { + case AUFS_CTL_RDU: + err = au_rdu(file, &rdu); + if (unlikely(err)) + break; + + e = copy_to_user(p, &rdu, sizeof(rdu)); + if (unlikely(e)) { + err = -EFAULT; + AuTraceErr(err); + } + break; + case AUFS_CTL_RDU_INO: + err = au_rdu_ino(file, &rdu); + break; + + default: + /* err = -ENOTTY; */ + err = -EINVAL; + } + +out: + AuTraceErr(err); + return err; +} + +#ifdef CONFIG_COMPAT +long au_rdu_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + long err, e; + struct aufs_rdu rdu; + void __user *p = compat_ptr(arg); + + /* todo: get_user()? */ + err = copy_from_user(&rdu, p, sizeof(rdu)); + if (unlikely(err)) { + err = -EFAULT; + AuTraceErr(err); + goto out; + } + rdu.ent.e = compat_ptr(rdu.ent.ul); + err = au_rdu_verify(&rdu); + if (unlikely(err)) + goto out; + + switch (cmd) { + case AUFS_CTL_RDU: + err = au_rdu(file, &rdu); + if (unlikely(err)) + break; + + rdu.ent.ul = ptr_to_compat(rdu.ent.e); + rdu.tail.ul = ptr_to_compat(rdu.tail.e); + e = copy_to_user(p, &rdu, sizeof(rdu)); + if (unlikely(e)) { + err = -EFAULT; + AuTraceErr(err); + } + break; + case AUFS_CTL_RDU_INO: + err = au_rdu_ino(file, &rdu); + break; + + default: + /* err = -ENOTTY; */ + err = -EINVAL; + } + +out: + AuTraceErr(err); + return err; +} +#endif diff --git a/include/fs/aufs/rwsem.h b/include/fs/aufs/rwsem.h new file mode 100644 index 00000000000..e4711f6f7ab --- /dev/null +++ b/include/fs/aufs/rwsem.h @@ -0,0 +1,72 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * simple read-write semaphore wrappers + */ + +#ifndef __AUFS_RWSEM_H__ +#define __AUFS_RWSEM_H__ + +#ifdef __KERNEL__ + +#include "debug.h" + +/* in the futre, the name 'au_rwsem' will be totally gone */ +#define au_rwsem rw_semaphore + +/* to debug easier, do not make them inlined functions */ +#define AuRwMustNoWaiters(rw) AuDebugOn(rwsem_is_contended(rw)) +/* rwsem_is_locked() is unusable */ +#define AuRwMustReadLock(rw) AuDebugOn(!lockdep_recursing(current) \ + && debug_locks \ + && !lockdep_is_held_type(rw, 1)) +#define AuRwMustWriteLock(rw) AuDebugOn(!lockdep_recursing(current) \ + && debug_locks \ + && !lockdep_is_held_type(rw, 0)) +#define AuRwMustAnyLock(rw) AuDebugOn(!lockdep_recursing(current) \ + && debug_locks \ + && !lockdep_is_held(rw)) +#define AuRwDestroy(rw) AuDebugOn(!lockdep_recursing(current) \ + && debug_locks \ + && lockdep_is_held(rw)) + +#define au_rw_init(rw) init_rwsem(rw) + +#define au_rw_init_wlock(rw) do { \ + au_rw_init(rw); \ + down_write(rw); \ + } while (0) + +#define au_rw_init_wlock_nested(rw, lsc) do { \ + au_rw_init(rw); \ + down_write_nested(rw, lsc); \ + } while (0) + +#define au_rw_read_lock(rw) down_read(rw) +#define au_rw_read_lock_nested(rw, lsc) down_read_nested(rw, lsc) +#define au_rw_read_unlock(rw) up_read(rw) +#define au_rw_dgrade_lock(rw) downgrade_write(rw) +#define au_rw_write_lock(rw) down_write(rw) +#define au_rw_write_lock_nested(rw, lsc) down_write_nested(rw, lsc) +#define au_rw_write_unlock(rw) up_write(rw) +/* why is not _nested version defined? */ +#define au_rw_read_trylock(rw) down_read_trylock(rw) +#define au_rw_write_trylock(rw) down_write_trylock(rw) + +#endif /* __KERNEL__ */ +#endif /* __AUFS_RWSEM_H__ */ diff --git a/include/fs/aufs/sbinfo.c b/include/fs/aufs/sbinfo.c new file mode 100644 index 00000000000..eaab8f5c3df --- /dev/null +++ b/include/fs/aufs/sbinfo.c @@ -0,0 +1,304 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * superblock private data + */ + +#include "aufs.h" + +/* + * they are necessary regardless sysfs is disabled. + */ +void au_si_free(struct kobject *kobj) +{ + int i; + struct au_sbinfo *sbinfo; + char *locked __maybe_unused; /* debug only */ + + sbinfo = container_of(kobj, struct au_sbinfo, si_kobj); + for (i = 0; i < AuPlink_NHASH; i++) + AuDebugOn(!hlist_bl_empty(sbinfo->si_plink + i)); + AuDebugOn(atomic_read(&sbinfo->si_nowait.nw_len)); + + AuDebugOn(percpu_counter_sum(&sbinfo->si_ninodes)); + percpu_counter_destroy(&sbinfo->si_ninodes); + AuDebugOn(percpu_counter_sum(&sbinfo->si_nfiles)); + percpu_counter_destroy(&sbinfo->si_nfiles); + + au_rw_write_lock(&sbinfo->si_rwsem); + au_br_free(sbinfo); + au_rw_write_unlock(&sbinfo->si_rwsem); + + kfree(sbinfo->si_branch); + mutex_destroy(&sbinfo->si_xib_mtx); + AuRwDestroy(&sbinfo->si_rwsem); + + kfree(sbinfo); +} + +int au_si_alloc(struct super_block *sb) +{ + int err, i; + struct au_sbinfo *sbinfo; + + err = -ENOMEM; + sbinfo = kzalloc(sizeof(*sbinfo), GFP_NOFS); + if (unlikely(!sbinfo)) + goto out; + + /* will be reallocated separately */ + sbinfo->si_branch = kzalloc(sizeof(*sbinfo->si_branch), GFP_NOFS); + if (unlikely(!sbinfo->si_branch)) + goto out_sbinfo; + + err = sysaufs_si_init(sbinfo); + if (unlikely(err)) + goto out_br; + + au_nwt_init(&sbinfo->si_nowait); + au_rw_init_wlock(&sbinfo->si_rwsem); + + percpu_counter_init(&sbinfo->si_ninodes, 0, GFP_NOFS); + percpu_counter_init(&sbinfo->si_nfiles, 0, GFP_NOFS); + + sbinfo->si_bbot = -1; + sbinfo->si_last_br_id = AUFS_BRANCH_MAX / 2; + + sbinfo->si_wbr_copyup = AuWbrCopyup_Def; + sbinfo->si_wbr_create = AuWbrCreate_Def; + sbinfo->si_wbr_copyup_ops = au_wbr_copyup_ops + sbinfo->si_wbr_copyup; + sbinfo->si_wbr_create_ops = au_wbr_create_ops + sbinfo->si_wbr_create; + + au_fhsm_init(sbinfo); + + sbinfo->si_mntflags = au_opts_plink(AuOpt_Def); + + sbinfo->si_xino_jiffy = jiffies; + sbinfo->si_xino_expire + = msecs_to_jiffies(AUFS_XINO_DEF_SEC * MSEC_PER_SEC); + mutex_init(&sbinfo->si_xib_mtx); + sbinfo->si_xino_brid = -1; + /* leave si_xib_last_pindex and si_xib_next_bit */ + + INIT_HLIST_BL_HEAD(&sbinfo->si_aopen); + + sbinfo->si_rdcache = msecs_to_jiffies(AUFS_RDCACHE_DEF * MSEC_PER_SEC); + sbinfo->si_rdblk = AUFS_RDBLK_DEF; + sbinfo->si_rdhash = AUFS_RDHASH_DEF; + sbinfo->si_dirwh = AUFS_DIRWH_DEF; + + for (i = 0; i < AuPlink_NHASH; i++) + INIT_HLIST_BL_HEAD(sbinfo->si_plink + i); + init_waitqueue_head(&sbinfo->si_plink_wq); + spin_lock_init(&sbinfo->si_plink_maint_lock); + + INIT_HLIST_BL_HEAD(&sbinfo->si_files); + + /* with getattr by default */ + sbinfo->si_iop_array = aufs_iop; + + /* leave other members for sysaufs and si_mnt. */ + sbinfo->si_sb = sb; + sb->s_fs_info = sbinfo; + si_pid_set(sb); + return 0; /* success */ + +out_br: + kfree(sbinfo->si_branch); +out_sbinfo: + kfree(sbinfo); +out: + return err; +} + +int au_sbr_realloc(struct au_sbinfo *sbinfo, int nbr, int may_shrink) +{ + int err, sz; + struct au_branch **brp; + + AuRwMustWriteLock(&sbinfo->si_rwsem); + + err = -ENOMEM; + sz = sizeof(*brp) * (sbinfo->si_bbot + 1); + if (unlikely(!sz)) + sz = sizeof(*brp); + brp = au_kzrealloc(sbinfo->si_branch, sz, sizeof(*brp) * nbr, GFP_NOFS, + may_shrink); + if (brp) { + sbinfo->si_branch = brp; + err = 0; + } + + return err; +} + +/* ---------------------------------------------------------------------- */ + +unsigned int au_sigen_inc(struct super_block *sb) +{ + unsigned int gen; + struct inode *inode; + + SiMustWriteLock(sb); + + gen = ++au_sbi(sb)->si_generation; + au_update_digen(sb->s_root); + inode = d_inode(sb->s_root); + au_update_iigen(inode, /*half*/0); + inode->i_version++; + return gen; +} + +aufs_bindex_t au_new_br_id(struct super_block *sb) +{ + aufs_bindex_t br_id; + int i; + struct au_sbinfo *sbinfo; + + SiMustWriteLock(sb); + + sbinfo = au_sbi(sb); + for (i = 0; i <= AUFS_BRANCH_MAX; i++) { + br_id = ++sbinfo->si_last_br_id; + AuDebugOn(br_id < 0); + if (br_id && au_br_index(sb, br_id) < 0) + return br_id; + } + + return -1; +} + +/* ---------------------------------------------------------------------- */ + +/* it is ok that new 'nwt' tasks are appended while we are sleeping */ +int si_read_lock(struct super_block *sb, int flags) +{ + int err; + + err = 0; + if (au_ftest_lock(flags, FLUSH)) + au_nwt_flush(&au_sbi(sb)->si_nowait); + + si_noflush_read_lock(sb); + err = au_plink_maint(sb, flags); + if (unlikely(err)) + si_read_unlock(sb); + + return err; +} + +int si_write_lock(struct super_block *sb, int flags) +{ + int err; + + if (au_ftest_lock(flags, FLUSH)) + au_nwt_flush(&au_sbi(sb)->si_nowait); + + si_noflush_write_lock(sb); + err = au_plink_maint(sb, flags); + if (unlikely(err)) + si_write_unlock(sb); + + return err; +} + +/* dentry and super_block lock. call at entry point */ +int aufs_read_lock(struct dentry *dentry, int flags) +{ + int err; + struct super_block *sb; + + sb = dentry->d_sb; + err = si_read_lock(sb, flags); + if (unlikely(err)) + goto out; + + if (au_ftest_lock(flags, DW)) + di_write_lock_child(dentry); + else + di_read_lock_child(dentry, flags); + + if (au_ftest_lock(flags, GEN)) { + err = au_digen_test(dentry, au_sigen(sb)); + if (!au_opt_test(au_mntflags(sb), UDBA_NONE)) + AuDebugOn(!err && au_dbrange_test(dentry)); + else if (!err) + err = au_dbrange_test(dentry); + if (unlikely(err)) + aufs_read_unlock(dentry, flags); + } + +out: + return err; +} + +void aufs_read_unlock(struct dentry *dentry, int flags) +{ + if (au_ftest_lock(flags, DW)) + di_write_unlock(dentry); + else + di_read_unlock(dentry, flags); + si_read_unlock(dentry->d_sb); +} + +void aufs_write_lock(struct dentry *dentry) +{ + si_write_lock(dentry->d_sb, AuLock_FLUSH | AuLock_NOPLMW); + di_write_lock_child(dentry); +} + +void aufs_write_unlock(struct dentry *dentry) +{ + di_write_unlock(dentry); + si_write_unlock(dentry->d_sb); +} + +int aufs_read_and_write_lock2(struct dentry *d1, struct dentry *d2, int flags) +{ + int err; + unsigned int sigen; + struct super_block *sb; + + sb = d1->d_sb; + err = si_read_lock(sb, flags); + if (unlikely(err)) + goto out; + + di_write_lock2_child(d1, d2, au_ftest_lock(flags, DIRS)); + + if (au_ftest_lock(flags, GEN)) { + sigen = au_sigen(sb); + err = au_digen_test(d1, sigen); + AuDebugOn(!err && au_dbrange_test(d1)); + if (!err) { + err = au_digen_test(d2, sigen); + AuDebugOn(!err && au_dbrange_test(d2)); + } + if (unlikely(err)) + aufs_read_and_write_unlock2(d1, d2); + } + +out: + return err; +} + +void aufs_read_and_write_unlock2(struct dentry *d1, struct dentry *d2) +{ + di_write_unlock2(d1, d2); + si_read_unlock(d1->d_sb); +} diff --git a/include/fs/aufs/super.c b/include/fs/aufs/super.c new file mode 100644 index 00000000000..5652497d67b --- /dev/null +++ b/include/fs/aufs/super.c @@ -0,0 +1,1046 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * mount and super_block operations + */ + +#include +#include +#include +#include +#include "aufs.h" + +/* + * super_operations + */ +static struct inode *aufs_alloc_inode(struct super_block *sb __maybe_unused) +{ + struct au_icntnr *c; + + c = au_cache_alloc_icntnr(); + if (c) { + au_icntnr_init(c); + c->vfs_inode.i_version = 1; /* sigen(sb); */ + c->iinfo.ii_hinode = NULL; + return &c->vfs_inode; + } + return NULL; +} + +static void aufs_destroy_inode_cb(struct rcu_head *head) +{ + struct inode *inode = container_of(head, struct inode, i_rcu); + + au_cache_free_icntnr(container_of(inode, struct au_icntnr, vfs_inode)); +} + +static void aufs_destroy_inode(struct inode *inode) +{ + if (!au_is_bad_inode(inode)) + au_iinfo_fin(inode); + call_rcu(&inode->i_rcu, aufs_destroy_inode_cb); +} + +struct inode *au_iget_locked(struct super_block *sb, ino_t ino) +{ + struct inode *inode; + int err; + + inode = iget_locked(sb, ino); + if (unlikely(!inode)) { + inode = ERR_PTR(-ENOMEM); + goto out; + } + if (!(inode->i_state & I_NEW)) + goto out; + + err = au_xigen_new(inode); + if (!err) + err = au_iinfo_init(inode); + if (!err) + inode->i_version++; + else { + iget_failed(inode); + inode = ERR_PTR(err); + } + +out: + /* never return NULL */ + AuDebugOn(!inode); + AuTraceErrPtr(inode); + return inode; +} + +/* lock free root dinfo */ +static int au_show_brs(struct seq_file *seq, struct super_block *sb) +{ + int err; + aufs_bindex_t bindex, bbot; + struct path path; + struct au_hdentry *hdp; + struct au_branch *br; + au_br_perm_str_t perm; + + err = 0; + bbot = au_sbbot(sb); + bindex = 0; + hdp = au_hdentry(au_di(sb->s_root), bindex); + for (; !err && bindex <= bbot; bindex++, hdp++) { + br = au_sbr(sb, bindex); + path.mnt = au_br_mnt(br); + path.dentry = hdp->hd_dentry; + err = au_seq_path(seq, &path); + if (!err) { + au_optstr_br_perm(&perm, br->br_perm); + seq_printf(seq, "=%s", perm.a); + if (bindex != bbot) + seq_putc(seq, ':'); + } + } + if (unlikely(err || seq_has_overflowed(seq))) + err = -E2BIG; + + return err; +} + +static void au_gen_fmt(char *fmt, int len __maybe_unused, const char *pat, + const char *append) +{ + char *p; + + p = fmt; + while (*pat != ':') + *p++ = *pat++; + *p++ = *pat++; + strcpy(p, append); + AuDebugOn(strlen(fmt) >= len); +} + +static void au_show_wbr_create(struct seq_file *m, int v, + struct au_sbinfo *sbinfo) +{ + const char *pat; + char fmt[32]; + struct au_wbr_mfs *mfs; + + AuRwMustAnyLock(&sbinfo->si_rwsem); + + seq_puts(m, ",create="); + pat = au_optstr_wbr_create(v); + mfs = &sbinfo->si_wbr_mfs; + switch (v) { + case AuWbrCreate_TDP: + case AuWbrCreate_RR: + case AuWbrCreate_MFS: + case AuWbrCreate_PMFS: + seq_puts(m, pat); + break; + case AuWbrCreate_MFSRR: + case AuWbrCreate_TDMFS: + case AuWbrCreate_PMFSRR: + au_gen_fmt(fmt, sizeof(fmt), pat, "%llu"); + seq_printf(m, fmt, mfs->mfsrr_watermark); + break; + case AuWbrCreate_MFSV: + case AuWbrCreate_PMFSV: + au_gen_fmt(fmt, sizeof(fmt), pat, "%lu"); + seq_printf(m, fmt, + jiffies_to_msecs(mfs->mfs_expire) + / MSEC_PER_SEC); + break; + case AuWbrCreate_MFSRRV: + case AuWbrCreate_TDMFSV: + case AuWbrCreate_PMFSRRV: + au_gen_fmt(fmt, sizeof(fmt), pat, "%llu:%lu"); + seq_printf(m, fmt, mfs->mfsrr_watermark, + jiffies_to_msecs(mfs->mfs_expire) / MSEC_PER_SEC); + break; + default: + BUG(); + } +} + +static int au_show_xino(struct seq_file *seq, struct super_block *sb) +{ +#ifdef CONFIG_SYSFS + return 0; +#else + int err; + const int len = sizeof(AUFS_XINO_FNAME) - 1; + aufs_bindex_t bindex, brid; + struct qstr *name; + struct file *f; + struct dentry *d, *h_root; + + AuRwMustAnyLock(&sbinfo->si_rwsem); + + err = 0; + f = au_sbi(sb)->si_xib; + if (!f) + goto out; + + /* stop printing the default xino path on the first writable branch */ + h_root = NULL; + brid = au_xino_brid(sb); + if (brid >= 0) { + bindex = au_br_index(sb, brid); + h_root = au_hdentry(au_di(sb->s_root), bindex)->hd_dentry; + } + d = f->f_path.dentry; + name = &d->d_name; + /* safe ->d_parent because the file is unlinked */ + if (d->d_parent == h_root + && name->len == len + && !memcmp(name->name, AUFS_XINO_FNAME, len)) + goto out; + + seq_puts(seq, ",xino="); + err = au_xino_path(seq, f); + +out: + return err; +#endif +} + +/* seq_file will re-call me in case of too long string */ +static int aufs_show_options(struct seq_file *m, struct dentry *dentry) +{ + int err; + unsigned int mnt_flags, v; + struct super_block *sb; + struct au_sbinfo *sbinfo; + +#define AuBool(name, str) do { \ + v = au_opt_test(mnt_flags, name); \ + if (v != au_opt_test(AuOpt_Def, name)) \ + seq_printf(m, ",%s" #str, v ? "" : "no"); \ +} while (0) + +#define AuStr(name, str) do { \ + v = mnt_flags & AuOptMask_##name; \ + if (v != (AuOpt_Def & AuOptMask_##name)) \ + seq_printf(m, "," #str "=%s", au_optstr_##str(v)); \ +} while (0) + +#define AuUInt(name, str, val) do { \ + if (val != AUFS_##name##_DEF) \ + seq_printf(m, "," #str "=%u", val); \ +} while (0) + + sb = dentry->d_sb; + if (sb->s_flags & SB_POSIXACL) + seq_puts(m, ",acl"); + + /* lock free root dinfo */ + si_noflush_read_lock(sb); + sbinfo = au_sbi(sb); + seq_printf(m, ",si=%lx", sysaufs_si_id(sbinfo)); + + mnt_flags = au_mntflags(sb); + if (au_opt_test(mnt_flags, XINO)) { + err = au_show_xino(m, sb); + if (unlikely(err)) + goto out; + } else + seq_puts(m, ",noxino"); + + AuBool(TRUNC_XINO, trunc_xino); + AuStr(UDBA, udba); + AuBool(SHWH, shwh); + AuBool(PLINK, plink); + AuBool(DIO, dio); + AuBool(DIRPERM1, dirperm1); + + v = sbinfo->si_wbr_create; + if (v != AuWbrCreate_Def) + au_show_wbr_create(m, v, sbinfo); + + v = sbinfo->si_wbr_copyup; + if (v != AuWbrCopyup_Def) + seq_printf(m, ",cpup=%s", au_optstr_wbr_copyup(v)); + + v = au_opt_test(mnt_flags, ALWAYS_DIROPQ); + if (v != au_opt_test(AuOpt_Def, ALWAYS_DIROPQ)) + seq_printf(m, ",diropq=%c", v ? 'a' : 'w'); + + AuUInt(DIRWH, dirwh, sbinfo->si_dirwh); + + v = jiffies_to_msecs(sbinfo->si_rdcache) / MSEC_PER_SEC; + AuUInt(RDCACHE, rdcache, v); + + AuUInt(RDBLK, rdblk, sbinfo->si_rdblk); + AuUInt(RDHASH, rdhash, sbinfo->si_rdhash); + + au_fhsm_show(m, sbinfo); + + AuBool(DIRREN, dirren); + AuBool(SUM, sum); + /* AuBool(SUM_W, wsum); */ + AuBool(WARN_PERM, warn_perm); + AuBool(VERBOSE, verbose); + +out: + /* be sure to print "br:" last */ + if (!sysaufs_brs) { + seq_puts(m, ",br:"); + au_show_brs(m, sb); + } + si_read_unlock(sb); + return 0; + +#undef AuBool +#undef AuStr +#undef AuUInt +} + +/* ---------------------------------------------------------------------- */ + +/* sum mode which returns the summation for statfs(2) */ + +static u64 au_add_till_max(u64 a, u64 b) +{ + u64 old; + + old = a; + a += b; + if (old <= a) + return a; + return ULLONG_MAX; +} + +static u64 au_mul_till_max(u64 a, long mul) +{ + u64 old; + + old = a; + a *= mul; + if (old <= a) + return a; + return ULLONG_MAX; +} + +static int au_statfs_sum(struct super_block *sb, struct kstatfs *buf) +{ + int err; + long bsize, factor; + u64 blocks, bfree, bavail, files, ffree; + aufs_bindex_t bbot, bindex, i; + unsigned char shared; + struct path h_path; + struct super_block *h_sb; + + err = 0; + bsize = LONG_MAX; + files = 0; + ffree = 0; + blocks = 0; + bfree = 0; + bavail = 0; + bbot = au_sbbot(sb); + for (bindex = 0; bindex <= bbot; bindex++) { + h_path.mnt = au_sbr_mnt(sb, bindex); + h_sb = h_path.mnt->mnt_sb; + shared = 0; + for (i = 0; !shared && i < bindex; i++) + shared = (au_sbr_sb(sb, i) == h_sb); + if (shared) + continue; + + /* sb->s_root for NFS is unreliable */ + h_path.dentry = h_path.mnt->mnt_root; + err = vfs_statfs(&h_path, buf); + if (unlikely(err)) + goto out; + + if (bsize > buf->f_bsize) { + /* + * we will reduce bsize, so we have to expand blocks + * etc. to match them again + */ + factor = (bsize / buf->f_bsize); + blocks = au_mul_till_max(blocks, factor); + bfree = au_mul_till_max(bfree, factor); + bavail = au_mul_till_max(bavail, factor); + bsize = buf->f_bsize; + } + + factor = (buf->f_bsize / bsize); + blocks = au_add_till_max(blocks, + au_mul_till_max(buf->f_blocks, factor)); + bfree = au_add_till_max(bfree, + au_mul_till_max(buf->f_bfree, factor)); + bavail = au_add_till_max(bavail, + au_mul_till_max(buf->f_bavail, factor)); + files = au_add_till_max(files, buf->f_files); + ffree = au_add_till_max(ffree, buf->f_ffree); + } + + buf->f_bsize = bsize; + buf->f_blocks = blocks; + buf->f_bfree = bfree; + buf->f_bavail = bavail; + buf->f_files = files; + buf->f_ffree = ffree; + buf->f_frsize = 0; + +out: + return err; +} + +static int aufs_statfs(struct dentry *dentry, struct kstatfs *buf) +{ + int err; + struct path h_path; + struct super_block *sb; + + /* lock free root dinfo */ + sb = dentry->d_sb; + si_noflush_read_lock(sb); + if (!au_opt_test(au_mntflags(sb), SUM)) { + /* sb->s_root for NFS is unreliable */ + h_path.mnt = au_sbr_mnt(sb, 0); + h_path.dentry = h_path.mnt->mnt_root; + err = vfs_statfs(&h_path, buf); + } else + err = au_statfs_sum(sb, buf); + si_read_unlock(sb); + + if (!err) { + buf->f_type = AUFS_SUPER_MAGIC; + buf->f_namelen = AUFS_MAX_NAMELEN; + memset(&buf->f_fsid, 0, sizeof(buf->f_fsid)); + } + /* buf->f_bsize = buf->f_blocks = buf->f_bfree = buf->f_bavail = -1; */ + + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int aufs_sync_fs(struct super_block *sb, int wait) +{ + int err, e; + aufs_bindex_t bbot, bindex; + struct au_branch *br; + struct super_block *h_sb; + + err = 0; + si_noflush_read_lock(sb); + bbot = au_sbbot(sb); + for (bindex = 0; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + if (!au_br_writable(br->br_perm)) + continue; + + h_sb = au_sbr_sb(sb, bindex); + e = vfsub_sync_filesystem(h_sb, wait); + if (unlikely(e && !err)) + err = e; + /* go on even if an error happens */ + } + si_read_unlock(sb); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* final actions when unmounting a file system */ +static void aufs_put_super(struct super_block *sb) +{ + struct au_sbinfo *sbinfo; + + sbinfo = au_sbi(sb); + if (!sbinfo) + return; + + dbgaufs_si_fin(sbinfo); + kobject_put(&sbinfo->si_kobj); +} + +/* ---------------------------------------------------------------------- */ + +void *au_array_alloc(unsigned long long *hint, au_arraycb_t cb, + struct super_block *sb, void *arg) +{ + void *array; + unsigned long long n, sz; + + array = NULL; + n = 0; + if (!*hint) + goto out; + + if (*hint > ULLONG_MAX / sizeof(array)) { + array = ERR_PTR(-EMFILE); + pr_err("hint %llu\n", *hint); + goto out; + } + + sz = sizeof(array) * *hint; + array = kzalloc(sz, GFP_NOFS); + if (unlikely(!array)) + array = vzalloc(sz); + if (unlikely(!array)) { + array = ERR_PTR(-ENOMEM); + goto out; + } + + n = cb(sb, array, *hint, arg); + AuDebugOn(n > *hint); + +out: + *hint = n; + return array; +} + +static unsigned long long au_iarray_cb(struct super_block *sb, void *a, + unsigned long long max __maybe_unused, + void *arg) +{ + unsigned long long n; + struct inode **p, *inode; + struct list_head *head; + + n = 0; + p = a; + head = arg; + spin_lock(&sb->s_inode_list_lock); + list_for_each_entry(inode, head, i_sb_list) { + if (!au_is_bad_inode(inode) + && au_ii(inode)->ii_btop >= 0) { + spin_lock(&inode->i_lock); + if (atomic_read(&inode->i_count)) { + au_igrab(inode); + *p++ = inode; + n++; + AuDebugOn(n > max); + } + spin_unlock(&inode->i_lock); + } + } + spin_unlock(&sb->s_inode_list_lock); + + return n; +} + +struct inode **au_iarray_alloc(struct super_block *sb, unsigned long long *max) +{ + *max = au_ninodes(sb); + return au_array_alloc(max, au_iarray_cb, sb, &sb->s_inodes); +} + +void au_iarray_free(struct inode **a, unsigned long long max) +{ + unsigned long long ull; + + for (ull = 0; ull < max; ull++) + iput(a[ull]); + kvfree(a); +} + +/* ---------------------------------------------------------------------- */ + +/* + * refresh dentry and inode at remount time. + */ +/* todo: consolidate with simple_reval_dpath() and au_reval_for_attr() */ +static int au_do_refresh(struct dentry *dentry, unsigned int dir_flags, + struct dentry *parent) +{ + int err; + + di_write_lock_child(dentry); + di_read_lock_parent(parent, AuLock_IR); + err = au_refresh_dentry(dentry, parent); + if (!err && dir_flags) + au_hn_reset(d_inode(dentry), dir_flags); + di_read_unlock(parent, AuLock_IR); + di_write_unlock(dentry); + + return err; +} + +static int au_do_refresh_d(struct dentry *dentry, unsigned int sigen, + struct au_sbinfo *sbinfo, + const unsigned int dir_flags, unsigned int do_idop) +{ + int err; + struct dentry *parent; + + err = 0; + parent = dget_parent(dentry); + if (!au_digen_test(parent, sigen) && au_digen_test(dentry, sigen)) { + if (d_really_is_positive(dentry)) { + if (!d_is_dir(dentry)) + err = au_do_refresh(dentry, /*dir_flags*/0, + parent); + else { + err = au_do_refresh(dentry, dir_flags, parent); + if (unlikely(err)) + au_fset_si(sbinfo, FAILED_REFRESH_DIR); + } + } else + err = au_do_refresh(dentry, /*dir_flags*/0, parent); + AuDbgDentry(dentry); + } + dput(parent); + + if (!err) { + if (do_idop) + au_refresh_dop(dentry, /*force_reval*/0); + } else + au_refresh_dop(dentry, /*force_reval*/1); + + AuTraceErr(err); + return err; +} + +static int au_refresh_d(struct super_block *sb, unsigned int do_idop) +{ + int err, i, j, ndentry, e; + unsigned int sigen; + struct au_dcsub_pages dpages; + struct au_dpage *dpage; + struct dentry **dentries, *d; + struct au_sbinfo *sbinfo; + struct dentry *root = sb->s_root; + const unsigned int dir_flags = au_hi_flags(d_inode(root), /*isdir*/1); + + if (do_idop) + au_refresh_dop(root, /*force_reval*/0); + + err = au_dpages_init(&dpages, GFP_NOFS); + if (unlikely(err)) + goto out; + err = au_dcsub_pages(&dpages, root, NULL, NULL); + if (unlikely(err)) + goto out_dpages; + + sigen = au_sigen(sb); + sbinfo = au_sbi(sb); + for (i = 0; i < dpages.ndpage; i++) { + dpage = dpages.dpages + i; + dentries = dpage->dentries; + ndentry = dpage->ndentry; + for (j = 0; j < ndentry; j++) { + d = dentries[j]; + e = au_do_refresh_d(d, sigen, sbinfo, dir_flags, + do_idop); + if (unlikely(e && !err)) + err = e; + /* go on even err */ + } + } + +out_dpages: + au_dpages_free(&dpages); +out: + return err; +} + +static int au_refresh_i(struct super_block *sb, unsigned int do_idop) +{ + int err, e; + unsigned int sigen; + unsigned long long max, ull; + struct inode *inode, **array; + + array = au_iarray_alloc(sb, &max); + err = PTR_ERR(array); + if (IS_ERR(array)) + goto out; + + err = 0; + sigen = au_sigen(sb); + for (ull = 0; ull < max; ull++) { + inode = array[ull]; + if (unlikely(!inode)) + break; + + e = 0; + ii_write_lock_child(inode); + if (au_iigen(inode, NULL) != sigen) { + e = au_refresh_hinode_self(inode); + if (unlikely(e)) { + au_refresh_iop(inode, /*force_getattr*/1); + pr_err("error %d, i%lu\n", e, inode->i_ino); + if (!err) + err = e; + /* go on even if err */ + } + } + if (!e && do_idop) + au_refresh_iop(inode, /*force_getattr*/0); + ii_write_unlock(inode); + } + + au_iarray_free(array, max); + +out: + return err; +} + +static void au_remount_refresh(struct super_block *sb, unsigned int do_idop) +{ + int err, e; + unsigned int udba; + aufs_bindex_t bindex, bbot; + struct dentry *root; + struct inode *inode; + struct au_branch *br; + struct au_sbinfo *sbi; + + au_sigen_inc(sb); + sbi = au_sbi(sb); + au_fclr_si(sbi, FAILED_REFRESH_DIR); + + root = sb->s_root; + DiMustNoWaiters(root); + inode = d_inode(root); + IiMustNoWaiters(inode); + + udba = au_opt_udba(sb); + bbot = au_sbbot(sb); + for (bindex = 0; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + err = au_hnotify_reset_br(udba, br, br->br_perm); + if (unlikely(err)) + AuIOErr("hnotify failed on br %d, %d, ignored\n", + bindex, err); + /* go on even if err */ + } + au_hn_reset(inode, au_hi_flags(inode, /*isdir*/1)); + + if (do_idop) { + if (au_ftest_si(sbi, NO_DREVAL)) { + AuDebugOn(sb->s_d_op == &aufs_dop_noreval); + sb->s_d_op = &aufs_dop_noreval; + AuDebugOn(sbi->si_iop_array == aufs_iop_nogetattr); + sbi->si_iop_array = aufs_iop_nogetattr; + } else { + AuDebugOn(sb->s_d_op == &aufs_dop); + sb->s_d_op = &aufs_dop; + AuDebugOn(sbi->si_iop_array == aufs_iop); + sbi->si_iop_array = aufs_iop; + } + pr_info("reset to %pf and %pf\n", + sb->s_d_op, sbi->si_iop_array); + } + + di_write_unlock(root); + err = au_refresh_d(sb, do_idop); + e = au_refresh_i(sb, do_idop); + if (unlikely(e && !err)) + err = e; + /* aufs_write_lock() calls ..._child() */ + di_write_lock_child(root); + + au_cpup_attr_all(inode, /*force*/1); + + if (unlikely(err)) + AuIOErr("refresh failed, ignored, %d\n", err); +} + +/* stop extra interpretation of errno in mount(8), and strange error messages */ +static int cvt_err(int err) +{ + AuTraceErr(err); + + switch (err) { + case -ENOENT: + case -ENOTDIR: + case -EEXIST: + case -EIO: + err = -EINVAL; + } + return err; +} + +static int aufs_remount_fs(struct super_block *sb, int *flags, char *data) +{ + int err, do_dx; + unsigned int mntflags; + struct au_opts opts = { + .opt = NULL + }; + struct dentry *root; + struct inode *inode; + struct au_sbinfo *sbinfo; + + err = 0; + root = sb->s_root; + if (!data || !*data) { + err = si_write_lock(sb, AuLock_FLUSH | AuLock_NOPLM); + if (!err) { + di_write_lock_child(root); + err = au_opts_verify(sb, *flags, /*pending*/0); + aufs_write_unlock(root); + } + goto out; + } + + err = -ENOMEM; + opts.opt = (void *)__get_free_page(GFP_NOFS); + if (unlikely(!opts.opt)) + goto out; + opts.max_opt = PAGE_SIZE / sizeof(*opts.opt); + opts.flags = AuOpts_REMOUNT; + opts.sb_flags = *flags; + + /* parse it before aufs lock */ + err = au_opts_parse(sb, data, &opts); + if (unlikely(err)) + goto out_opts; + + sbinfo = au_sbi(sb); + inode = d_inode(root); + inode_lock(inode); + err = si_write_lock(sb, AuLock_FLUSH | AuLock_NOPLM); + if (unlikely(err)) + goto out_mtx; + di_write_lock_child(root); + + /* au_opts_remount() may return an error */ + err = au_opts_remount(sb, &opts); + au_opts_free(&opts); + + if (au_ftest_opts(opts.flags, REFRESH)) + au_remount_refresh(sb, au_ftest_opts(opts.flags, REFRESH_IDOP)); + + if (au_ftest_opts(opts.flags, REFRESH_DYAOP)) { + mntflags = au_mntflags(sb); + do_dx = !!au_opt_test(mntflags, DIO); + au_dy_arefresh(do_dx); + } + + au_fhsm_wrote_all(sb, /*force*/1); /* ?? */ + aufs_write_unlock(root); + +out_mtx: + inode_unlock(inode); +out_opts: + free_page((unsigned long)opts.opt); +out: + err = cvt_err(err); + AuTraceErr(err); + return err; +} + +static const struct super_operations aufs_sop = { + .alloc_inode = aufs_alloc_inode, + .destroy_inode = aufs_destroy_inode, + /* always deleting, no clearing */ + .drop_inode = generic_delete_inode, + .show_options = aufs_show_options, + .statfs = aufs_statfs, + .put_super = aufs_put_super, + .sync_fs = aufs_sync_fs, + .remount_fs = aufs_remount_fs +}; + +/* ---------------------------------------------------------------------- */ + +static int alloc_root(struct super_block *sb) +{ + int err; + struct inode *inode; + struct dentry *root; + + err = -ENOMEM; + inode = au_iget_locked(sb, AUFS_ROOT_INO); + err = PTR_ERR(inode); + if (IS_ERR(inode)) + goto out; + + inode->i_op = aufs_iop + AuIop_DIR; /* with getattr by default */ + inode->i_fop = &aufs_dir_fop; + inode->i_mode = S_IFDIR; + set_nlink(inode, 2); + unlock_new_inode(inode); + + root = d_make_root(inode); + if (unlikely(!root)) + goto out; + err = PTR_ERR(root); + if (IS_ERR(root)) + goto out; + + err = au_di_init(root); + if (!err) { + sb->s_root = root; + return 0; /* success */ + } + dput(root); + +out: + return err; +} + +static int aufs_fill_super(struct super_block *sb, void *raw_data, + int silent __maybe_unused) +{ + int err; + struct au_opts opts = { + .opt = NULL + }; + struct au_sbinfo *sbinfo; + struct dentry *root; + struct inode *inode; + char *arg = raw_data; + + if (unlikely(!arg || !*arg)) { + err = -EINVAL; + pr_err("no arg\n"); + goto out; + } + + err = -ENOMEM; + opts.opt = (void *)__get_free_page(GFP_NOFS); + if (unlikely(!opts.opt)) + goto out; + opts.max_opt = PAGE_SIZE / sizeof(*opts.opt); + opts.sb_flags = sb->s_flags; + + err = au_si_alloc(sb); + if (unlikely(err)) + goto out_opts; + sbinfo = au_sbi(sb); + + /* all timestamps always follow the ones on the branch */ + sb->s_flags |= SB_NOATIME | SB_NODIRATIME; + sb->s_op = &aufs_sop; + sb->s_d_op = &aufs_dop; + sb->s_magic = AUFS_SUPER_MAGIC; + sb->s_maxbytes = 0; + sb->s_stack_depth = 1; + au_export_init(sb); + au_xattr_init(sb); + + err = alloc_root(sb); + if (unlikely(err)) { + si_write_unlock(sb); + goto out_info; + } + root = sb->s_root; + inode = d_inode(root); + + /* + * actually we can parse options regardless aufs lock here. + * but at remount time, parsing must be done before aufs lock. + * so we follow the same rule. + */ + ii_write_lock_parent(inode); + aufs_write_unlock(root); + err = au_opts_parse(sb, arg, &opts); + if (unlikely(err)) + goto out_root; + + /* lock vfs_inode first, then aufs. */ + inode_lock(inode); + aufs_write_lock(root); + err = au_opts_mount(sb, &opts); + au_opts_free(&opts); + if (!err && au_ftest_si(sbinfo, NO_DREVAL)) { + sb->s_d_op = &aufs_dop_noreval; + pr_info("%pf\n", sb->s_d_op); + au_refresh_dop(root, /*force_reval*/0); + sbinfo->si_iop_array = aufs_iop_nogetattr; + au_refresh_iop(inode, /*force_getattr*/0); + } + aufs_write_unlock(root); + inode_unlock(inode); + if (!err) + goto out_opts; /* success */ + +out_root: + dput(root); + sb->s_root = NULL; +out_info: + dbgaufs_si_fin(sbinfo); + kobject_put(&sbinfo->si_kobj); + sb->s_fs_info = NULL; +out_opts: + free_page((unsigned long)opts.opt); +out: + AuTraceErr(err); + err = cvt_err(err); + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static struct dentry *aufs_mount(struct file_system_type *fs_type, int flags, + const char *dev_name __maybe_unused, + void *raw_data) +{ + struct dentry *root; + struct super_block *sb; + + /* all timestamps always follow the ones on the branch */ + /* mnt->mnt_flags |= MNT_NOATIME | MNT_NODIRATIME; */ + root = mount_nodev(fs_type, flags, raw_data, aufs_fill_super); + if (IS_ERR(root)) + goto out; + + sb = root->d_sb; + si_write_lock(sb, !AuLock_FLUSH); + sysaufs_brs_add(sb, 0); + si_write_unlock(sb); + au_sbilist_add(sb); + +out: + return root; +} + +static void aufs_kill_sb(struct super_block *sb) +{ + struct au_sbinfo *sbinfo; + + sbinfo = au_sbi(sb); + if (sbinfo) { + au_sbilist_del(sb); + aufs_write_lock(sb->s_root); + au_fhsm_fin(sb); + if (sbinfo->si_wbr_create_ops->fin) + sbinfo->si_wbr_create_ops->fin(sb); + if (au_opt_test(sbinfo->si_mntflags, UDBA_HNOTIFY)) { + au_opt_set_udba(sbinfo->si_mntflags, UDBA_NONE); + au_remount_refresh(sb, /*do_idop*/0); + } + if (au_opt_test(sbinfo->si_mntflags, PLINK)) + au_plink_put(sb, /*verbose*/1); + au_xino_clr(sb); + au_dr_opt_flush(sb); + sbinfo->si_sb = NULL; + aufs_write_unlock(sb->s_root); + au_nwt_flush(&sbinfo->si_nowait); + } + kill_anon_super(sb); +} + +struct file_system_type aufs_fs_type = { + .name = AUFS_FSTYPE, + /* a race between rename and others */ + .fs_flags = FS_RENAME_DOES_D_MOVE, + .mount = aufs_mount, + .kill_sb = aufs_kill_sb, + /* no need to __module_get() and module_put(). */ + .owner = THIS_MODULE, +}; diff --git a/include/fs/aufs/super.h b/include/fs/aufs/super.h new file mode 100644 index 00000000000..e6da6031726 --- /dev/null +++ b/include/fs/aufs/super.h @@ -0,0 +1,626 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * super_block operations + */ + +#ifndef __AUFS_SUPER_H__ +#define __AUFS_SUPER_H__ + +#ifdef __KERNEL__ + +#include +#include +#include "hbl.h" +#include "rwsem.h" +#include "wkq.h" + +/* policies to select one among multiple writable branches */ +struct au_wbr_copyup_operations { + int (*copyup)(struct dentry *dentry); +}; + +#define AuWbr_DIR 1 /* target is a dir */ +#define AuWbr_PARENT (1 << 1) /* always require a parent */ + +#define au_ftest_wbr(flags, name) ((flags) & AuWbr_##name) +#define au_fset_wbr(flags, name) { (flags) |= AuWbr_##name; } +#define au_fclr_wbr(flags, name) { (flags) &= ~AuWbr_##name; } + +struct au_wbr_create_operations { + int (*create)(struct dentry *dentry, unsigned int flags); + int (*init)(struct super_block *sb); + int (*fin)(struct super_block *sb); +}; + +struct au_wbr_mfs { + struct mutex mfs_lock; /* protect this structure */ + unsigned long mfs_jiffy; + unsigned long mfs_expire; + aufs_bindex_t mfs_bindex; + + unsigned long long mfsrr_bytes; + unsigned long long mfsrr_watermark; +}; + +#define AuPlink_NHASH 100 +static inline int au_plink_hash(ino_t ino) +{ + return ino % AuPlink_NHASH; +} + +/* File-based Hierarchical Storage Management */ +struct au_fhsm { +#ifdef CONFIG_AUFS_FHSM + /* allow only one process who can receive the notification */ + spinlock_t fhsm_spin; + pid_t fhsm_pid; + wait_queue_head_t fhsm_wqh; + atomic_t fhsm_readable; + + /* these are protected by si_rwsem */ + unsigned long fhsm_expire; + aufs_bindex_t fhsm_bottom; +#endif +}; + +struct au_branch; +struct au_sbinfo { + /* nowait tasks in the system-wide workqueue */ + struct au_nowait_tasks si_nowait; + + /* + * tried sb->s_umount, but failed due to the dependecy between i_mutex. + * rwsem for au_sbinfo is necessary. + */ + struct au_rwsem si_rwsem; + + /* + * dirty approach to protect sb->sb_inodes and ->s_files (gone) from + * remount. + */ + struct percpu_counter si_ninodes, si_nfiles; + + /* branch management */ + unsigned int si_generation; + + /* see AuSi_ flags */ + unsigned char au_si_status; + + aufs_bindex_t si_bbot; + + /* dirty trick to keep br_id plus */ + unsigned int si_last_br_id : + sizeof(aufs_bindex_t) * BITS_PER_BYTE - 1; + struct au_branch **si_branch; + + /* policy to select a writable branch */ + unsigned char si_wbr_copyup; + unsigned char si_wbr_create; + struct au_wbr_copyup_operations *si_wbr_copyup_ops; + struct au_wbr_create_operations *si_wbr_create_ops; + + /* round robin */ + atomic_t si_wbr_rr_next; + + /* most free space */ + struct au_wbr_mfs si_wbr_mfs; + + /* File-based Hierarchical Storage Management */ + struct au_fhsm si_fhsm; + + /* mount flags */ + /* include/asm-ia64/siginfo.h defines a macro named si_flags */ + unsigned int si_mntflags; + + /* external inode number (bitmap and translation table) */ + vfs_readf_t si_xread; + vfs_writef_t si_xwrite; + struct file *si_xib; + struct mutex si_xib_mtx; /* protect xib members */ + unsigned long *si_xib_buf; + unsigned long si_xib_last_pindex; + int si_xib_next_bit; + aufs_bindex_t si_xino_brid; + unsigned long si_xino_jiffy; + unsigned long si_xino_expire; + /* reserved for future use */ + /* unsigned long long si_xib_limit; */ /* Max xib file size */ + +#ifdef CONFIG_AUFS_EXPORT + /* i_generation */ + struct file *si_xigen; + atomic_t si_xigen_next; +#endif + + /* dirty trick to suppoer atomic_open */ + struct hlist_bl_head si_aopen; + + /* vdir parameters */ + unsigned long si_rdcache; /* max cache time in jiffies */ + unsigned int si_rdblk; /* deblk size */ + unsigned int si_rdhash; /* hash size */ + + /* + * If the number of whiteouts are larger than si_dirwh, leave all of + * them after au_whtmp_ren to reduce the cost of rmdir(2). + * future fsck.aufs or kernel thread will remove them later. + * Otherwise, remove all whiteouts and the dir in rmdir(2). + */ + unsigned int si_dirwh; + + /* pseudo_link list */ + struct hlist_bl_head si_plink[AuPlink_NHASH]; + wait_queue_head_t si_plink_wq; + spinlock_t si_plink_maint_lock; + pid_t si_plink_maint_pid; + + /* file list */ + struct hlist_bl_head si_files; + + /* with/without getattr, brother of sb->s_d_op */ + struct inode_operations *si_iop_array; + + /* + * sysfs and lifetime management. + * this is not a small structure and it may be a waste of memory in case + * of sysfs is disabled, particulary when many aufs-es are mounted. + * but using sysfs is majority. + */ + struct kobject si_kobj; +#ifdef CONFIG_DEBUG_FS + struct dentry *si_dbgaufs; + struct dentry *si_dbgaufs_plink; + struct dentry *si_dbgaufs_xib; +#ifdef CONFIG_AUFS_EXPORT + struct dentry *si_dbgaufs_xigen; +#endif +#endif + +#ifdef CONFIG_AUFS_SBILIST + struct hlist_bl_node si_list; +#endif + + /* dirty, necessary for unmounting, sysfs and sysrq */ + struct super_block *si_sb; +}; + +/* sbinfo status flags */ +/* + * set true when refresh_dirs() failed at remount time. + * then try refreshing dirs at access time again. + * if it is false, refreshing dirs at access time is unnecesary + */ +#define AuSi_FAILED_REFRESH_DIR 1 +#define AuSi_FHSM (1 << 1) /* fhsm is active now */ +#define AuSi_NO_DREVAL (1 << 2) /* disable all d_revalidate */ + +#ifndef CONFIG_AUFS_FHSM +#undef AuSi_FHSM +#define AuSi_FHSM 0 +#endif + +static inline unsigned char au_do_ftest_si(struct au_sbinfo *sbi, + unsigned int flag) +{ + AuRwMustAnyLock(&sbi->si_rwsem); + return sbi->au_si_status & flag; +} +#define au_ftest_si(sbinfo, name) au_do_ftest_si(sbinfo, AuSi_##name) +#define au_fset_si(sbinfo, name) do { \ + AuRwMustWriteLock(&(sbinfo)->si_rwsem); \ + (sbinfo)->au_si_status |= AuSi_##name; \ +} while (0) +#define au_fclr_si(sbinfo, name) do { \ + AuRwMustWriteLock(&(sbinfo)->si_rwsem); \ + (sbinfo)->au_si_status &= ~AuSi_##name; \ +} while (0) + +/* ---------------------------------------------------------------------- */ + +/* policy to select one among writable branches */ +#define AuWbrCopyup(sbinfo, ...) \ + ((sbinfo)->si_wbr_copyup_ops->copyup(__VA_ARGS__)) +#define AuWbrCreate(sbinfo, ...) \ + ((sbinfo)->si_wbr_create_ops->create(__VA_ARGS__)) + +/* flags for si_read_lock()/aufs_read_lock()/di_read_lock() */ +#define AuLock_DW 1 /* write-lock dentry */ +#define AuLock_IR (1 << 1) /* read-lock inode */ +#define AuLock_IW (1 << 2) /* write-lock inode */ +#define AuLock_FLUSH (1 << 3) /* wait for 'nowait' tasks */ +#define AuLock_DIRS (1 << 4) /* target is a pair of dirs */ + /* except RENAME_EXCHANGE */ +#define AuLock_NOPLM (1 << 5) /* return err in plm mode */ +#define AuLock_NOPLMW (1 << 6) /* wait for plm mode ends */ +#define AuLock_GEN (1 << 7) /* test digen/iigen */ +#define au_ftest_lock(flags, name) ((flags) & AuLock_##name) +#define au_fset_lock(flags, name) \ + do { (flags) |= AuLock_##name; } while (0) +#define au_fclr_lock(flags, name) \ + do { (flags) &= ~AuLock_##name; } while (0) + +/* ---------------------------------------------------------------------- */ + +/* super.c */ +extern struct file_system_type aufs_fs_type; +struct inode *au_iget_locked(struct super_block *sb, ino_t ino); +typedef unsigned long long (*au_arraycb_t)(struct super_block *sb, void *array, + unsigned long long max, void *arg); +void *au_array_alloc(unsigned long long *hint, au_arraycb_t cb, + struct super_block *sb, void *arg); +struct inode **au_iarray_alloc(struct super_block *sb, unsigned long long *max); +void au_iarray_free(struct inode **a, unsigned long long max); + +/* sbinfo.c */ +void au_si_free(struct kobject *kobj); +int au_si_alloc(struct super_block *sb); +int au_sbr_realloc(struct au_sbinfo *sbinfo, int nbr, int may_shrink); + +unsigned int au_sigen_inc(struct super_block *sb); +aufs_bindex_t au_new_br_id(struct super_block *sb); + +int si_read_lock(struct super_block *sb, int flags); +int si_write_lock(struct super_block *sb, int flags); +int aufs_read_lock(struct dentry *dentry, int flags); +void aufs_read_unlock(struct dentry *dentry, int flags); +void aufs_write_lock(struct dentry *dentry); +void aufs_write_unlock(struct dentry *dentry); +int aufs_read_and_write_lock2(struct dentry *d1, struct dentry *d2, int flags); +void aufs_read_and_write_unlock2(struct dentry *d1, struct dentry *d2); + +/* wbr_policy.c */ +extern struct au_wbr_copyup_operations au_wbr_copyup_ops[]; +extern struct au_wbr_create_operations au_wbr_create_ops[]; +int au_cpdown_dirs(struct dentry *dentry, aufs_bindex_t bdst); +int au_wbr_nonopq(struct dentry *dentry, aufs_bindex_t bindex); +int au_wbr_do_copyup_bu(struct dentry *dentry, aufs_bindex_t btop); + +/* mvdown.c */ +int au_mvdown(struct dentry *dentry, struct aufs_mvdown __user *arg); + +#ifdef CONFIG_AUFS_FHSM +/* fhsm.c */ + +static inline pid_t au_fhsm_pid(struct au_fhsm *fhsm) +{ + pid_t pid; + + spin_lock(&fhsm->fhsm_spin); + pid = fhsm->fhsm_pid; + spin_unlock(&fhsm->fhsm_spin); + + return pid; +} + +void au_fhsm_wrote(struct super_block *sb, aufs_bindex_t bindex, int force); +void au_fhsm_wrote_all(struct super_block *sb, int force); +int au_fhsm_fd(struct super_block *sb, int oflags); +int au_fhsm_br_alloc(struct au_branch *br); +void au_fhsm_set_bottom(struct super_block *sb, aufs_bindex_t bindex); +void au_fhsm_fin(struct super_block *sb); +void au_fhsm_init(struct au_sbinfo *sbinfo); +void au_fhsm_set(struct au_sbinfo *sbinfo, unsigned int sec); +void au_fhsm_show(struct seq_file *seq, struct au_sbinfo *sbinfo); +#else +AuStubVoid(au_fhsm_wrote, struct super_block *sb, aufs_bindex_t bindex, + int force) +AuStubVoid(au_fhsm_wrote_all, struct super_block *sb, int force) +AuStub(int, au_fhsm_fd, return -EOPNOTSUPP, struct super_block *sb, int oflags) +AuStub(pid_t, au_fhsm_pid, return 0, struct au_fhsm *fhsm) +AuStubInt0(au_fhsm_br_alloc, struct au_branch *br) +AuStubVoid(au_fhsm_set_bottom, struct super_block *sb, aufs_bindex_t bindex) +AuStubVoid(au_fhsm_fin, struct super_block *sb) +AuStubVoid(au_fhsm_init, struct au_sbinfo *sbinfo) +AuStubVoid(au_fhsm_set, struct au_sbinfo *sbinfo, unsigned int sec) +AuStubVoid(au_fhsm_show, struct seq_file *seq, struct au_sbinfo *sbinfo) +#endif + +/* ---------------------------------------------------------------------- */ + +static inline struct au_sbinfo *au_sbi(struct super_block *sb) +{ + return sb->s_fs_info; +} + +/* ---------------------------------------------------------------------- */ + +#ifdef CONFIG_AUFS_EXPORT +int au_test_nfsd(void); +void au_export_init(struct super_block *sb); +void au_xigen_inc(struct inode *inode); +int au_xigen_new(struct inode *inode); +int au_xigen_set(struct super_block *sb, struct file *base); +void au_xigen_clr(struct super_block *sb); + +static inline int au_busy_or_stale(void) +{ + if (!au_test_nfsd()) + return -EBUSY; + return -ESTALE; +} +#else +AuStubInt0(au_test_nfsd, void) +AuStubVoid(au_export_init, struct super_block *sb) +AuStubVoid(au_xigen_inc, struct inode *inode) +AuStubInt0(au_xigen_new, struct inode *inode) +AuStubInt0(au_xigen_set, struct super_block *sb, struct file *base) +AuStubVoid(au_xigen_clr, struct super_block *sb) +AuStub(int, au_busy_or_stale, return -EBUSY, void) +#endif /* CONFIG_AUFS_EXPORT */ + +/* ---------------------------------------------------------------------- */ + +#ifdef CONFIG_AUFS_SBILIST +/* module.c */ +extern struct hlist_bl_head au_sbilist; + +static inline void au_sbilist_init(void) +{ + INIT_HLIST_BL_HEAD(&au_sbilist); +} + +static inline void au_sbilist_add(struct super_block *sb) +{ + au_hbl_add(&au_sbi(sb)->si_list, &au_sbilist); +} + +static inline void au_sbilist_del(struct super_block *sb) +{ + au_hbl_del(&au_sbi(sb)->si_list, &au_sbilist); +} + +#ifdef CONFIG_AUFS_MAGIC_SYSRQ +static inline void au_sbilist_lock(void) +{ + hlist_bl_lock(&au_sbilist); +} + +static inline void au_sbilist_unlock(void) +{ + hlist_bl_unlock(&au_sbilist); +} +#define AuGFP_SBILIST GFP_ATOMIC +#else +AuStubVoid(au_sbilist_lock, void) +AuStubVoid(au_sbilist_unlock, void) +#define AuGFP_SBILIST GFP_NOFS +#endif /* CONFIG_AUFS_MAGIC_SYSRQ */ +#else +AuStubVoid(au_sbilist_init, void) +AuStubVoid(au_sbilist_add, struct super_block *sb) +AuStubVoid(au_sbilist_del, struct super_block *sb) +AuStubVoid(au_sbilist_lock, void) +AuStubVoid(au_sbilist_unlock, void) +#define AuGFP_SBILIST GFP_NOFS +#endif + +/* ---------------------------------------------------------------------- */ + +static inline void dbgaufs_si_null(struct au_sbinfo *sbinfo) +{ + /* + * This function is a dynamic '__init' function actually, + * so the tiny check for si_rwsem is unnecessary. + */ + /* AuRwMustWriteLock(&sbinfo->si_rwsem); */ +#ifdef CONFIG_DEBUG_FS + sbinfo->si_dbgaufs = NULL; + sbinfo->si_dbgaufs_plink = NULL; + sbinfo->si_dbgaufs_xib = NULL; +#ifdef CONFIG_AUFS_EXPORT + sbinfo->si_dbgaufs_xigen = NULL; +#endif +#endif +} + +/* ---------------------------------------------------------------------- */ + +/* current->atomic_flags */ +/* this value should never corrupt the ones defined in linux/sched.h */ +#define PFA_AUFS 7 + +TASK_PFA_TEST(AUFS, test_aufs) /* task_test_aufs */ +TASK_PFA_SET(AUFS, aufs) /* task_set_aufs */ +TASK_PFA_CLEAR(AUFS, aufs) /* task_clear_aufs */ + +static inline int si_pid_test(struct super_block *sb) +{ + return !!task_test_aufs(current); +} + +static inline void si_pid_clr(struct super_block *sb) +{ + AuDebugOn(!task_test_aufs(current)); + task_clear_aufs(current); +} + +static inline void si_pid_set(struct super_block *sb) +{ + AuDebugOn(task_test_aufs(current)); + task_set_aufs(current); +} + +/* ---------------------------------------------------------------------- */ + +/* lock superblock. mainly for entry point functions */ +#define __si_read_lock(sb) au_rw_read_lock(&au_sbi(sb)->si_rwsem) +#define __si_write_lock(sb) au_rw_write_lock(&au_sbi(sb)->si_rwsem) +#define __si_read_trylock(sb) au_rw_read_trylock(&au_sbi(sb)->si_rwsem) +#define __si_write_trylock(sb) au_rw_write_trylock(&au_sbi(sb)->si_rwsem) +/* +#define __si_read_trylock_nested(sb) \ + au_rw_read_trylock_nested(&au_sbi(sb)->si_rwsem) +#define __si_write_trylock_nested(sb) \ + au_rw_write_trylock_nested(&au_sbi(sb)->si_rwsem) +*/ + +#define __si_read_unlock(sb) au_rw_read_unlock(&au_sbi(sb)->si_rwsem) +#define __si_write_unlock(sb) au_rw_write_unlock(&au_sbi(sb)->si_rwsem) +#define __si_downgrade_lock(sb) au_rw_dgrade_lock(&au_sbi(sb)->si_rwsem) + +#define SiMustNoWaiters(sb) AuRwMustNoWaiters(&au_sbi(sb)->si_rwsem) +#define SiMustAnyLock(sb) AuRwMustAnyLock(&au_sbi(sb)->si_rwsem) +#define SiMustWriteLock(sb) AuRwMustWriteLock(&au_sbi(sb)->si_rwsem) + +static inline void si_noflush_read_lock(struct super_block *sb) +{ + __si_read_lock(sb); + si_pid_set(sb); +} + +static inline int si_noflush_read_trylock(struct super_block *sb) +{ + int locked; + + locked = __si_read_trylock(sb); + if (locked) + si_pid_set(sb); + return locked; +} + +static inline void si_noflush_write_lock(struct super_block *sb) +{ + __si_write_lock(sb); + si_pid_set(sb); +} + +static inline int si_noflush_write_trylock(struct super_block *sb) +{ + int locked; + + locked = __si_write_trylock(sb); + if (locked) + si_pid_set(sb); + return locked; +} + +#if 0 /* reserved */ +static inline int si_read_trylock(struct super_block *sb, int flags) +{ + if (au_ftest_lock(flags, FLUSH)) + au_nwt_flush(&au_sbi(sb)->si_nowait); + return si_noflush_read_trylock(sb); +} +#endif + +static inline void si_read_unlock(struct super_block *sb) +{ + si_pid_clr(sb); + __si_read_unlock(sb); +} + +#if 0 /* reserved */ +static inline int si_write_trylock(struct super_block *sb, int flags) +{ + if (au_ftest_lock(flags, FLUSH)) + au_nwt_flush(&au_sbi(sb)->si_nowait); + return si_noflush_write_trylock(sb); +} +#endif + +static inline void si_write_unlock(struct super_block *sb) +{ + si_pid_clr(sb); + __si_write_unlock(sb); +} + +#if 0 /* reserved */ +static inline void si_downgrade_lock(struct super_block *sb) +{ + __si_downgrade_lock(sb); +} +#endif + +/* ---------------------------------------------------------------------- */ + +static inline aufs_bindex_t au_sbbot(struct super_block *sb) +{ + SiMustAnyLock(sb); + return au_sbi(sb)->si_bbot; +} + +static inline unsigned int au_mntflags(struct super_block *sb) +{ + SiMustAnyLock(sb); + return au_sbi(sb)->si_mntflags; +} + +static inline unsigned int au_sigen(struct super_block *sb) +{ + SiMustAnyLock(sb); + return au_sbi(sb)->si_generation; +} + +static inline unsigned long long au_ninodes(struct super_block *sb) +{ + s64 n = percpu_counter_sum(&au_sbi(sb)->si_ninodes); + + BUG_ON(n < 0); + return n; +} + +static inline void au_ninodes_inc(struct super_block *sb) +{ + percpu_counter_inc(&au_sbi(sb)->si_ninodes); +} + +static inline void au_ninodes_dec(struct super_block *sb) +{ + percpu_counter_dec(&au_sbi(sb)->si_ninodes); +} + +static inline unsigned long long au_nfiles(struct super_block *sb) +{ + s64 n = percpu_counter_sum(&au_sbi(sb)->si_nfiles); + + BUG_ON(n < 0); + return n; +} + +static inline void au_nfiles_inc(struct super_block *sb) +{ + percpu_counter_inc(&au_sbi(sb)->si_nfiles); +} + +static inline void au_nfiles_dec(struct super_block *sb) +{ + percpu_counter_dec(&au_sbi(sb)->si_nfiles); +} + +static inline struct au_branch *au_sbr(struct super_block *sb, + aufs_bindex_t bindex) +{ + SiMustAnyLock(sb); + return au_sbi(sb)->si_branch[0 + bindex]; +} + +static inline void au_xino_brid_set(struct super_block *sb, aufs_bindex_t brid) +{ + SiMustWriteLock(sb); + au_sbi(sb)->si_xino_brid = brid; +} + +static inline aufs_bindex_t au_xino_brid(struct super_block *sb) +{ + SiMustAnyLock(sb); + return au_sbi(sb)->si_xino_brid; +} + +#endif /* __KERNEL__ */ +#endif /* __AUFS_SUPER_H__ */ diff --git a/include/fs/aufs/sysaufs.c b/include/fs/aufs/sysaufs.c new file mode 100644 index 00000000000..d87a20d4de5 --- /dev/null +++ b/include/fs/aufs/sysaufs.c @@ -0,0 +1,104 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * sysfs interface and lifetime management + * they are necessary regardless sysfs is disabled. + */ + +#include +#include "aufs.h" + +unsigned long sysaufs_si_mask; +struct kset *sysaufs_kset; + +#define AuSiAttr(_name) { \ + .attr = { .name = __stringify(_name), .mode = 0444 }, \ + .show = sysaufs_si_##_name, \ +} + +static struct sysaufs_si_attr sysaufs_si_attr_xi_path = AuSiAttr(xi_path); +struct attribute *sysaufs_si_attrs[] = { + &sysaufs_si_attr_xi_path.attr, + NULL, +}; + +static const struct sysfs_ops au_sbi_ops = { + .show = sysaufs_si_show +}; + +static struct kobj_type au_sbi_ktype = { + .release = au_si_free, + .sysfs_ops = &au_sbi_ops, + .default_attrs = sysaufs_si_attrs +}; + +/* ---------------------------------------------------------------------- */ + +int sysaufs_si_init(struct au_sbinfo *sbinfo) +{ + int err; + + sbinfo->si_kobj.kset = sysaufs_kset; + /* cf. sysaufs_name() */ + err = kobject_init_and_add + (&sbinfo->si_kobj, &au_sbi_ktype, /*&sysaufs_kset->kobj*/NULL, + SysaufsSiNamePrefix "%lx", sysaufs_si_id(sbinfo)); + + dbgaufs_si_null(sbinfo); + if (!err) { + err = dbgaufs_si_init(sbinfo); + if (unlikely(err)) + kobject_put(&sbinfo->si_kobj); + } + return err; +} + +void sysaufs_fin(void) +{ + dbgaufs_fin(); + sysfs_remove_group(&sysaufs_kset->kobj, sysaufs_attr_group); + kset_unregister(sysaufs_kset); +} + +int __init sysaufs_init(void) +{ + int err; + + do { + get_random_bytes(&sysaufs_si_mask, sizeof(sysaufs_si_mask)); + } while (!sysaufs_si_mask); + + err = -EINVAL; + sysaufs_kset = kset_create_and_add(AUFS_NAME, NULL, fs_kobj); + if (unlikely(!sysaufs_kset)) + goto out; + err = PTR_ERR(sysaufs_kset); + if (IS_ERR(sysaufs_kset)) + goto out; + err = sysfs_create_group(&sysaufs_kset->kobj, sysaufs_attr_group); + if (unlikely(err)) { + kset_unregister(sysaufs_kset); + goto out; + } + + err = dbgaufs_init(); + if (unlikely(err)) + sysaufs_fin(); +out: + return err; +} diff --git a/include/fs/aufs/sysaufs.h b/include/fs/aufs/sysaufs.h new file mode 100644 index 00000000000..50aca1dc831 --- /dev/null +++ b/include/fs/aufs/sysaufs.h @@ -0,0 +1,101 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * sysfs interface and mount lifetime management + */ + +#ifndef __SYSAUFS_H__ +#define __SYSAUFS_H__ + +#ifdef __KERNEL__ + +#include +#include "module.h" + +struct super_block; +struct au_sbinfo; + +struct sysaufs_si_attr { + struct attribute attr; + int (*show)(struct seq_file *seq, struct super_block *sb); +}; + +/* ---------------------------------------------------------------------- */ + +/* sysaufs.c */ +extern unsigned long sysaufs_si_mask; +extern struct kset *sysaufs_kset; +extern struct attribute *sysaufs_si_attrs[]; +int sysaufs_si_init(struct au_sbinfo *sbinfo); +int __init sysaufs_init(void); +void sysaufs_fin(void); + +/* ---------------------------------------------------------------------- */ + +/* some people doesn't like to show a pointer in kernel */ +static inline unsigned long sysaufs_si_id(struct au_sbinfo *sbinfo) +{ + return sysaufs_si_mask ^ (unsigned long)sbinfo; +} + +#define SysaufsSiNamePrefix "si_" +#define SysaufsSiNameLen (sizeof(SysaufsSiNamePrefix) + 16) +static inline void sysaufs_name(struct au_sbinfo *sbinfo, char *name) +{ + snprintf(name, SysaufsSiNameLen, SysaufsSiNamePrefix "%lx", + sysaufs_si_id(sbinfo)); +} + +struct au_branch; +#ifdef CONFIG_SYSFS +/* sysfs.c */ +extern struct attribute_group *sysaufs_attr_group; + +int sysaufs_si_xi_path(struct seq_file *seq, struct super_block *sb); +ssize_t sysaufs_si_show(struct kobject *kobj, struct attribute *attr, + char *buf); +long au_brinfo_ioctl(struct file *file, unsigned long arg); +#ifdef CONFIG_COMPAT +long au_brinfo_compat_ioctl(struct file *file, unsigned long arg); +#endif + +void sysaufs_br_init(struct au_branch *br); +void sysaufs_brs_add(struct super_block *sb, aufs_bindex_t bindex); +void sysaufs_brs_del(struct super_block *sb, aufs_bindex_t bindex); + +#define sysaufs_brs_init() do {} while (0) + +#else +#define sysaufs_attr_group NULL + +AuStubInt0(sysaufs_si_xi_path, struct seq_file *seq, struct super_block *sb) +AuStub(ssize_t, sysaufs_si_show, return 0, struct kobject *kobj, + struct attribute *attr, char *buf) +AuStubVoid(sysaufs_br_init, struct au_branch *br) +AuStubVoid(sysaufs_brs_add, struct super_block *sb, aufs_bindex_t bindex) +AuStubVoid(sysaufs_brs_del, struct super_block *sb, aufs_bindex_t bindex) + +static inline void sysaufs_brs_init(void) +{ + sysaufs_brs = 0; +} + +#endif /* CONFIG_SYSFS */ + +#endif /* __KERNEL__ */ +#endif /* __SYSAUFS_H__ */ diff --git a/include/fs/aufs/sysfs.c b/include/fs/aufs/sysfs.c new file mode 100644 index 00000000000..58e1486021d --- /dev/null +++ b/include/fs/aufs/sysfs.c @@ -0,0 +1,376 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * sysfs interface + */ + +#include +#include +#include "aufs.h" + +#ifdef CONFIG_AUFS_FS_MODULE +/* this entry violates the "one line per file" policy of sysfs */ +static ssize_t config_show(struct kobject *kobj, struct kobj_attribute *attr, + char *buf) +{ + ssize_t err; + static char *conf = +/* this file is generated at compiling */ +#include "conf.str" + ; + + err = snprintf(buf, PAGE_SIZE, conf); + if (unlikely(err >= PAGE_SIZE)) + err = -EFBIG; + return err; +} + +static struct kobj_attribute au_config_attr = __ATTR_RO(config); +#endif + +static struct attribute *au_attr[] = { +#ifdef CONFIG_AUFS_FS_MODULE + &au_config_attr.attr, +#endif + NULL, /* need to NULL terminate the list of attributes */ +}; + +static struct attribute_group sysaufs_attr_group_body = { + .attrs = au_attr +}; + +struct attribute_group *sysaufs_attr_group = &sysaufs_attr_group_body; + +/* ---------------------------------------------------------------------- */ + +int sysaufs_si_xi_path(struct seq_file *seq, struct super_block *sb) +{ + int err; + + SiMustAnyLock(sb); + + err = 0; + if (au_opt_test(au_mntflags(sb), XINO)) { + err = au_xino_path(seq, au_sbi(sb)->si_xib); + seq_putc(seq, '\n'); + } + return err; +} + +/* + * the lifetime of branch is independent from the entry under sysfs. + * sysfs handles the lifetime of the entry, and never call ->show() after it is + * unlinked. + */ +static int sysaufs_si_br(struct seq_file *seq, struct super_block *sb, + aufs_bindex_t bindex, int idx) +{ + int err; + struct path path; + struct dentry *root; + struct au_branch *br; + au_br_perm_str_t perm; + + AuDbg("b%d\n", bindex); + + err = 0; + root = sb->s_root; + di_read_lock_parent(root, !AuLock_IR); + br = au_sbr(sb, bindex); + + switch (idx) { + case AuBrSysfs_BR: + path.mnt = au_br_mnt(br); + path.dentry = au_h_dptr(root, bindex); + err = au_seq_path(seq, &path); + if (!err) { + au_optstr_br_perm(&perm, br->br_perm); + seq_printf(seq, "=%s\n", perm.a); + } + break; + case AuBrSysfs_BRID: + seq_printf(seq, "%d\n", br->br_id); + break; + } + di_read_unlock(root, !AuLock_IR); + if (unlikely(err || seq_has_overflowed(seq))) + err = -E2BIG; + + return err; +} + +/* ---------------------------------------------------------------------- */ + +static struct seq_file *au_seq(char *p, ssize_t len) +{ + struct seq_file *seq; + + seq = kzalloc(sizeof(*seq), GFP_NOFS); + if (seq) { + /* mutex_init(&seq.lock); */ + seq->buf = p; + seq->size = len; + return seq; /* success */ + } + + seq = ERR_PTR(-ENOMEM); + return seq; +} + +#define SysaufsBr_PREFIX "br" +#define SysaufsBrid_PREFIX "brid" + +/* todo: file size may exceed PAGE_SIZE */ +ssize_t sysaufs_si_show(struct kobject *kobj, struct attribute *attr, + char *buf) +{ + ssize_t err; + int idx; + long l; + aufs_bindex_t bbot; + struct au_sbinfo *sbinfo; + struct super_block *sb; + struct seq_file *seq; + char *name; + struct attribute **cattr; + + sbinfo = container_of(kobj, struct au_sbinfo, si_kobj); + sb = sbinfo->si_sb; + + /* + * prevent a race condition between sysfs and aufs. + * for instance, sysfs_file_read() calls sysfs_get_active_two() which + * prohibits maintaining the sysfs entries. + * hew we acquire read lock after sysfs_get_active_two(). + * on the other hand, the remount process may maintain the sysfs/aufs + * entries after acquiring write lock. + * it can cause a deadlock. + * simply we gave up processing read here. + */ + err = -EBUSY; + if (unlikely(!si_noflush_read_trylock(sb))) + goto out; + + seq = au_seq(buf, PAGE_SIZE); + err = PTR_ERR(seq); + if (IS_ERR(seq)) + goto out_unlock; + + name = (void *)attr->name; + cattr = sysaufs_si_attrs; + while (*cattr) { + if (!strcmp(name, (*cattr)->name)) { + err = container_of(*cattr, struct sysaufs_si_attr, attr) + ->show(seq, sb); + goto out_seq; + } + cattr++; + } + + if (!strncmp(name, SysaufsBrid_PREFIX, + sizeof(SysaufsBrid_PREFIX) - 1)) { + idx = AuBrSysfs_BRID; + name += sizeof(SysaufsBrid_PREFIX) - 1; + } else if (!strncmp(name, SysaufsBr_PREFIX, + sizeof(SysaufsBr_PREFIX) - 1)) { + idx = AuBrSysfs_BR; + name += sizeof(SysaufsBr_PREFIX) - 1; + } else + BUG(); + + err = kstrtol(name, 10, &l); + if (!err) { + bbot = au_sbbot(sb); + if (l <= bbot) + err = sysaufs_si_br(seq, sb, (aufs_bindex_t)l, idx); + else + err = -ENOENT; + } + +out_seq: + if (!err) { + err = seq->count; + /* sysfs limit */ + if (unlikely(err == PAGE_SIZE)) + err = -EFBIG; + } + kfree(seq); +out_unlock: + si_read_unlock(sb); +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int au_brinfo(struct super_block *sb, union aufs_brinfo __user *arg) +{ + int err; + int16_t brid; + aufs_bindex_t bindex, bbot; + size_t sz; + char *buf; + struct seq_file *seq; + struct au_branch *br; + + si_read_lock(sb, AuLock_FLUSH); + bbot = au_sbbot(sb); + err = bbot + 1; + if (!arg) + goto out; + + err = -ENOMEM; + buf = (void *)__get_free_page(GFP_NOFS); + if (unlikely(!buf)) + goto out; + + seq = au_seq(buf, PAGE_SIZE); + err = PTR_ERR(seq); + if (IS_ERR(seq)) + goto out_buf; + + sz = sizeof(*arg) - offsetof(union aufs_brinfo, path); + for (bindex = 0; bindex <= bbot; bindex++, arg++) { + err = !access_ok(VERIFY_WRITE, arg, sizeof(*arg)); + if (unlikely(err)) + break; + + br = au_sbr(sb, bindex); + brid = br->br_id; + BUILD_BUG_ON(sizeof(brid) != sizeof(arg->id)); + err = __put_user(brid, &arg->id); + if (unlikely(err)) + break; + + BUILD_BUG_ON(sizeof(br->br_perm) != sizeof(arg->perm)); + err = __put_user(br->br_perm, &arg->perm); + if (unlikely(err)) + break; + + err = au_seq_path(seq, &br->br_path); + if (unlikely(err)) + break; + seq_putc(seq, '\0'); + if (!seq_has_overflowed(seq)) { + err = copy_to_user(arg->path, seq->buf, seq->count); + seq->count = 0; + if (unlikely(err)) + break; + } else { + err = -E2BIG; + goto out_seq; + } + } + if (unlikely(err)) + err = -EFAULT; + +out_seq: + kfree(seq); +out_buf: + free_page((unsigned long)buf); +out: + si_read_unlock(sb); + return err; +} + +long au_brinfo_ioctl(struct file *file, unsigned long arg) +{ + return au_brinfo(file->f_path.dentry->d_sb, (void __user *)arg); +} + +#ifdef CONFIG_COMPAT +long au_brinfo_compat_ioctl(struct file *file, unsigned long arg) +{ + return au_brinfo(file->f_path.dentry->d_sb, compat_ptr(arg)); +} +#endif + +/* ---------------------------------------------------------------------- */ + +void sysaufs_br_init(struct au_branch *br) +{ + int i; + struct au_brsysfs *br_sysfs; + struct attribute *attr; + + br_sysfs = br->br_sysfs; + for (i = 0; i < ARRAY_SIZE(br->br_sysfs); i++) { + attr = &br_sysfs->attr; + sysfs_attr_init(attr); + attr->name = br_sysfs->name; + attr->mode = S_IRUGO; + br_sysfs++; + } +} + +void sysaufs_brs_del(struct super_block *sb, aufs_bindex_t bindex) +{ + struct au_branch *br; + struct kobject *kobj; + struct au_brsysfs *br_sysfs; + int i; + aufs_bindex_t bbot; + + dbgaufs_brs_del(sb, bindex); + + if (!sysaufs_brs) + return; + + kobj = &au_sbi(sb)->si_kobj; + bbot = au_sbbot(sb); + for (; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + br_sysfs = br->br_sysfs; + for (i = 0; i < ARRAY_SIZE(br->br_sysfs); i++) { + sysfs_remove_file(kobj, &br_sysfs->attr); + br_sysfs++; + } + } +} + +void sysaufs_brs_add(struct super_block *sb, aufs_bindex_t bindex) +{ + int err, i; + aufs_bindex_t bbot; + struct kobject *kobj; + struct au_branch *br; + struct au_brsysfs *br_sysfs; + + dbgaufs_brs_add(sb, bindex); + + if (!sysaufs_brs) + return; + + kobj = &au_sbi(sb)->si_kobj; + bbot = au_sbbot(sb); + for (; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + br_sysfs = br->br_sysfs; + snprintf(br_sysfs[AuBrSysfs_BR].name, sizeof(br_sysfs->name), + SysaufsBr_PREFIX "%d", bindex); + snprintf(br_sysfs[AuBrSysfs_BRID].name, sizeof(br_sysfs->name), + SysaufsBrid_PREFIX "%d", bindex); + for (i = 0; i < ARRAY_SIZE(br->br_sysfs); i++) { + err = sysfs_create_file(kobj, &br_sysfs->attr); + if (unlikely(err)) + pr_warn("failed %s under sysfs(%d)\n", + br_sysfs->name, err); + br_sysfs++; + } + } +} diff --git a/include/fs/aufs/sysrq.c b/include/fs/aufs/sysrq.c new file mode 100644 index 00000000000..401c1e8eca5 --- /dev/null +++ b/include/fs/aufs/sysrq.c @@ -0,0 +1,159 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * magic sysrq hanlder + */ + +/* #include */ +#include +#include "aufs.h" + +/* ---------------------------------------------------------------------- */ + +static void sysrq_sb(struct super_block *sb) +{ + char *plevel; + struct au_sbinfo *sbinfo; + struct file *file; + struct hlist_bl_head *files; + struct hlist_bl_node *pos; + struct au_finfo *finfo; + + plevel = au_plevel; + au_plevel = KERN_WARNING; + + /* since we define pr_fmt, call printk directly */ +#define pr(str) printk(KERN_WARNING AUFS_NAME ": " str) + + sbinfo = au_sbi(sb); + printk(KERN_WARNING "si=%lx\n", sysaufs_si_id(sbinfo)); + pr("superblock\n"); + au_dpri_sb(sb); + +#if 0 + pr("root dentry\n"); + au_dpri_dentry(sb->s_root); + pr("root inode\n"); + au_dpri_inode(d_inode(sb->s_root)); +#endif + +#if 0 + do { + int err, i, j, ndentry; + struct au_dcsub_pages dpages; + struct au_dpage *dpage; + + err = au_dpages_init(&dpages, GFP_ATOMIC); + if (unlikely(err)) + break; + err = au_dcsub_pages(&dpages, sb->s_root, NULL, NULL); + if (!err) + for (i = 0; i < dpages.ndpage; i++) { + dpage = dpages.dpages + i; + ndentry = dpage->ndentry; + for (j = 0; j < ndentry; j++) + au_dpri_dentry(dpage->dentries[j]); + } + au_dpages_free(&dpages); + } while (0); +#endif + +#if 1 + { + struct inode *i; + + pr("isolated inode\n"); + spin_lock(&sb->s_inode_list_lock); + list_for_each_entry(i, &sb->s_inodes, i_sb_list) { + spin_lock(&i->i_lock); + if (1 || hlist_empty(&i->i_dentry)) + au_dpri_inode(i); + spin_unlock(&i->i_lock); + } + spin_unlock(&sb->s_inode_list_lock); + } +#endif + pr("files\n"); + files = &au_sbi(sb)->si_files; + hlist_bl_lock(files); + hlist_bl_for_each_entry(finfo, pos, files, fi_hlist) { + umode_t mode; + + file = finfo->fi_file; + mode = file_inode(file)->i_mode; + if (!special_file(mode)) + au_dpri_file(file); + } + hlist_bl_unlock(files); + pr("done\n"); + +#undef pr + au_plevel = plevel; +} + +/* ---------------------------------------------------------------------- */ + +/* module parameter */ +static char *aufs_sysrq_key = "a"; +module_param_named(sysrq, aufs_sysrq_key, charp, S_IRUGO); +MODULE_PARM_DESC(sysrq, "MagicSysRq key for " AUFS_NAME); + +static void au_sysrq(int key __maybe_unused) +{ + struct au_sbinfo *sbinfo; + struct hlist_bl_node *pos; + + lockdep_off(); + au_sbilist_lock(); + hlist_bl_for_each_entry(sbinfo, pos, &au_sbilist, si_list) + sysrq_sb(sbinfo->si_sb); + au_sbilist_unlock(); + lockdep_on(); +} + +static struct sysrq_key_op au_sysrq_op = { + .handler = au_sysrq, + .help_msg = "Aufs", + .action_msg = "Aufs", + .enable_mask = SYSRQ_ENABLE_DUMP +}; + +/* ---------------------------------------------------------------------- */ + +int __init au_sysrq_init(void) +{ + int err; + char key; + + err = -1; + key = *aufs_sysrq_key; + if ('a' <= key && key <= 'z') + err = register_sysrq_key(key, &au_sysrq_op); + if (unlikely(err)) + pr_err("err %d, sysrq=%c\n", err, key); + return err; +} + +void au_sysrq_fin(void) +{ + int err; + + err = unregister_sysrq_key(*aufs_sysrq_key, &au_sysrq_op); + if (unlikely(err)) + pr_err("err %d (ignored)\n", err); +} diff --git a/include/fs/aufs/vdir.c b/include/fs/aufs/vdir.c new file mode 100644 index 00000000000..6db517232d8 --- /dev/null +++ b/include/fs/aufs/vdir.c @@ -0,0 +1,893 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * virtual or vertical directory + */ + +#include "aufs.h" + +static unsigned int calc_size(int nlen) +{ + return ALIGN(sizeof(struct au_vdir_de) + nlen, sizeof(ino_t)); +} + +static int set_deblk_end(union au_vdir_deblk_p *p, + union au_vdir_deblk_p *deblk_end) +{ + if (calc_size(0) <= deblk_end->deblk - p->deblk) { + p->de->de_str.len = 0; + /* smp_mb(); */ + return 0; + } + return -1; /* error */ +} + +/* returns true or false */ +static int is_deblk_end(union au_vdir_deblk_p *p, + union au_vdir_deblk_p *deblk_end) +{ + if (calc_size(0) <= deblk_end->deblk - p->deblk) + return !p->de->de_str.len; + return 1; +} + +static unsigned char *last_deblk(struct au_vdir *vdir) +{ + return vdir->vd_deblk[vdir->vd_nblk - 1]; +} + +/* ---------------------------------------------------------------------- */ + +/* estimate the appropriate size for name hash table */ +unsigned int au_rdhash_est(loff_t sz) +{ + unsigned int n; + + n = UINT_MAX; + sz >>= 10; + if (sz < n) + n = sz; + if (sz < AUFS_RDHASH_DEF) + n = AUFS_RDHASH_DEF; + /* pr_info("n %u\n", n); */ + return n; +} + +/* + * the allocated memory has to be freed by + * au_nhash_wh_free() or au_nhash_de_free(). + */ +int au_nhash_alloc(struct au_nhash *nhash, unsigned int num_hash, gfp_t gfp) +{ + struct hlist_head *head; + unsigned int u; + size_t sz; + + sz = sizeof(*nhash->nh_head) * num_hash; + head = kmalloc(sz, gfp); + if (head) { + nhash->nh_num = num_hash; + nhash->nh_head = head; + for (u = 0; u < num_hash; u++) + INIT_HLIST_HEAD(head++); + return 0; /* success */ + } + + return -ENOMEM; +} + +static void nhash_count(struct hlist_head *head) +{ +#if 0 + unsigned long n; + struct hlist_node *pos; + + n = 0; + hlist_for_each(pos, head) + n++; + pr_info("%lu\n", n); +#endif +} + +static void au_nhash_wh_do_free(struct hlist_head *head) +{ + struct au_vdir_wh *pos; + struct hlist_node *node; + + hlist_for_each_entry_safe(pos, node, head, wh_hash) + kfree(pos); +} + +static void au_nhash_de_do_free(struct hlist_head *head) +{ + struct au_vdir_dehstr *pos; + struct hlist_node *node; + + hlist_for_each_entry_safe(pos, node, head, hash) + au_cache_free_vdir_dehstr(pos); +} + +static void au_nhash_do_free(struct au_nhash *nhash, + void (*free)(struct hlist_head *head)) +{ + unsigned int n; + struct hlist_head *head; + + n = nhash->nh_num; + if (!n) + return; + + head = nhash->nh_head; + while (n-- > 0) { + nhash_count(head); + free(head++); + } + kfree(nhash->nh_head); +} + +void au_nhash_wh_free(struct au_nhash *whlist) +{ + au_nhash_do_free(whlist, au_nhash_wh_do_free); +} + +static void au_nhash_de_free(struct au_nhash *delist) +{ + au_nhash_do_free(delist, au_nhash_de_do_free); +} + +/* ---------------------------------------------------------------------- */ + +int au_nhash_test_longer_wh(struct au_nhash *whlist, aufs_bindex_t btgt, + int limit) +{ + int num; + unsigned int u, n; + struct hlist_head *head; + struct au_vdir_wh *pos; + + num = 0; + n = whlist->nh_num; + head = whlist->nh_head; + for (u = 0; u < n; u++, head++) + hlist_for_each_entry(pos, head, wh_hash) + if (pos->wh_bindex == btgt && ++num > limit) + return 1; + return 0; +} + +static struct hlist_head *au_name_hash(struct au_nhash *nhash, + unsigned char *name, + unsigned int len) +{ + unsigned int v; + /* const unsigned int magic_bit = 12; */ + + AuDebugOn(!nhash->nh_num || !nhash->nh_head); + + v = 0; + if (len > 8) + len = 8; + while (len--) + v += *name++; + /* v = hash_long(v, magic_bit); */ + v %= nhash->nh_num; + return nhash->nh_head + v; +} + +static int au_nhash_test_name(struct au_vdir_destr *str, const char *name, + int nlen) +{ + return str->len == nlen && !memcmp(str->name, name, nlen); +} + +/* returns found or not */ +int au_nhash_test_known_wh(struct au_nhash *whlist, char *name, int nlen) +{ + struct hlist_head *head; + struct au_vdir_wh *pos; + struct au_vdir_destr *str; + + head = au_name_hash(whlist, name, nlen); + hlist_for_each_entry(pos, head, wh_hash) { + str = &pos->wh_str; + AuDbg("%.*s\n", str->len, str->name); + if (au_nhash_test_name(str, name, nlen)) + return 1; + } + return 0; +} + +/* returns found(true) or not */ +static int test_known(struct au_nhash *delist, char *name, int nlen) +{ + struct hlist_head *head; + struct au_vdir_dehstr *pos; + struct au_vdir_destr *str; + + head = au_name_hash(delist, name, nlen); + hlist_for_each_entry(pos, head, hash) { + str = pos->str; + AuDbg("%.*s\n", str->len, str->name); + if (au_nhash_test_name(str, name, nlen)) + return 1; + } + return 0; +} + +static void au_shwh_init_wh(struct au_vdir_wh *wh, ino_t ino, + unsigned char d_type) +{ +#ifdef CONFIG_AUFS_SHWH + wh->wh_ino = ino; + wh->wh_type = d_type; +#endif +} + +/* ---------------------------------------------------------------------- */ + +int au_nhash_append_wh(struct au_nhash *whlist, char *name, int nlen, ino_t ino, + unsigned int d_type, aufs_bindex_t bindex, + unsigned char shwh) +{ + int err; + struct au_vdir_destr *str; + struct au_vdir_wh *wh; + + AuDbg("%.*s\n", nlen, name); + AuDebugOn(!whlist->nh_num || !whlist->nh_head); + + err = -ENOMEM; + wh = kmalloc(sizeof(*wh) + nlen, GFP_NOFS); + if (unlikely(!wh)) + goto out; + + err = 0; + wh->wh_bindex = bindex; + if (shwh) + au_shwh_init_wh(wh, ino, d_type); + str = &wh->wh_str; + str->len = nlen; + memcpy(str->name, name, nlen); + hlist_add_head(&wh->wh_hash, au_name_hash(whlist, name, nlen)); + /* smp_mb(); */ + +out: + return err; +} + +static int append_deblk(struct au_vdir *vdir) +{ + int err; + unsigned long ul; + const unsigned int deblk_sz = vdir->vd_deblk_sz; + union au_vdir_deblk_p p, deblk_end; + unsigned char **o; + + err = -ENOMEM; + o = au_krealloc(vdir->vd_deblk, sizeof(*o) * (vdir->vd_nblk + 1), + GFP_NOFS, /*may_shrink*/0); + if (unlikely(!o)) + goto out; + + vdir->vd_deblk = o; + p.deblk = kmalloc(deblk_sz, GFP_NOFS); + if (p.deblk) { + ul = vdir->vd_nblk++; + vdir->vd_deblk[ul] = p.deblk; + vdir->vd_last.ul = ul; + vdir->vd_last.p.deblk = p.deblk; + deblk_end.deblk = p.deblk + deblk_sz; + err = set_deblk_end(&p, &deblk_end); + } + +out: + return err; +} + +static int append_de(struct au_vdir *vdir, char *name, int nlen, ino_t ino, + unsigned int d_type, struct au_nhash *delist) +{ + int err; + unsigned int sz; + const unsigned int deblk_sz = vdir->vd_deblk_sz; + union au_vdir_deblk_p p, *room, deblk_end; + struct au_vdir_dehstr *dehstr; + + p.deblk = last_deblk(vdir); + deblk_end.deblk = p.deblk + deblk_sz; + room = &vdir->vd_last.p; + AuDebugOn(room->deblk < p.deblk || deblk_end.deblk <= room->deblk + || !is_deblk_end(room, &deblk_end)); + + sz = calc_size(nlen); + if (unlikely(sz > deblk_end.deblk - room->deblk)) { + err = append_deblk(vdir); + if (unlikely(err)) + goto out; + + p.deblk = last_deblk(vdir); + deblk_end.deblk = p.deblk + deblk_sz; + /* smp_mb(); */ + AuDebugOn(room->deblk != p.deblk); + } + + err = -ENOMEM; + dehstr = au_cache_alloc_vdir_dehstr(); + if (unlikely(!dehstr)) + goto out; + + dehstr->str = &room->de->de_str; + hlist_add_head(&dehstr->hash, au_name_hash(delist, name, nlen)); + room->de->de_ino = ino; + room->de->de_type = d_type; + room->de->de_str.len = nlen; + memcpy(room->de->de_str.name, name, nlen); + + err = 0; + room->deblk += sz; + if (unlikely(set_deblk_end(room, &deblk_end))) + err = append_deblk(vdir); + /* smp_mb(); */ + +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +void au_vdir_free(struct au_vdir *vdir) +{ + unsigned char **deblk; + + deblk = vdir->vd_deblk; + while (vdir->vd_nblk--) + kfree(*deblk++); + kfree(vdir->vd_deblk); + au_cache_free_vdir(vdir); +} + +static struct au_vdir *alloc_vdir(struct file *file) +{ + struct au_vdir *vdir; + struct super_block *sb; + int err; + + sb = file->f_path.dentry->d_sb; + SiMustAnyLock(sb); + + err = -ENOMEM; + vdir = au_cache_alloc_vdir(); + if (unlikely(!vdir)) + goto out; + + vdir->vd_deblk = kzalloc(sizeof(*vdir->vd_deblk), GFP_NOFS); + if (unlikely(!vdir->vd_deblk)) + goto out_free; + + vdir->vd_deblk_sz = au_sbi(sb)->si_rdblk; + if (!vdir->vd_deblk_sz) { + /* estimate the appropriate size for deblk */ + vdir->vd_deblk_sz = au_dir_size(file, /*dentry*/NULL); + /* pr_info("vd_deblk_sz %u\n", vdir->vd_deblk_sz); */ + } + vdir->vd_nblk = 0; + vdir->vd_version = 0; + vdir->vd_jiffy = 0; + err = append_deblk(vdir); + if (!err) + return vdir; /* success */ + + kfree(vdir->vd_deblk); + +out_free: + au_cache_free_vdir(vdir); +out: + vdir = ERR_PTR(err); + return vdir; +} + +static int reinit_vdir(struct au_vdir *vdir) +{ + int err; + union au_vdir_deblk_p p, deblk_end; + + while (vdir->vd_nblk > 1) { + kfree(vdir->vd_deblk[vdir->vd_nblk - 1]); + /* vdir->vd_deblk[vdir->vd_nblk - 1] = NULL; */ + vdir->vd_nblk--; + } + p.deblk = vdir->vd_deblk[0]; + deblk_end.deblk = p.deblk + vdir->vd_deblk_sz; + err = set_deblk_end(&p, &deblk_end); + /* keep vd_dblk_sz */ + vdir->vd_last.ul = 0; + vdir->vd_last.p.deblk = vdir->vd_deblk[0]; + vdir->vd_version = 0; + vdir->vd_jiffy = 0; + /* smp_mb(); */ + return err; +} + +/* ---------------------------------------------------------------------- */ + +#define AuFillVdir_CALLED 1 +#define AuFillVdir_WHABLE (1 << 1) +#define AuFillVdir_SHWH (1 << 2) +#define au_ftest_fillvdir(flags, name) ((flags) & AuFillVdir_##name) +#define au_fset_fillvdir(flags, name) \ + do { (flags) |= AuFillVdir_##name; } while (0) +#define au_fclr_fillvdir(flags, name) \ + do { (flags) &= ~AuFillVdir_##name; } while (0) + +#ifndef CONFIG_AUFS_SHWH +#undef AuFillVdir_SHWH +#define AuFillVdir_SHWH 0 +#endif + +struct fillvdir_arg { + struct dir_context ctx; + struct file *file; + struct au_vdir *vdir; + struct au_nhash delist; + struct au_nhash whlist; + aufs_bindex_t bindex; + unsigned int flags; + int err; +}; + +static int fillvdir(struct dir_context *ctx, const char *__name, int nlen, + loff_t offset __maybe_unused, u64 h_ino, + unsigned int d_type) +{ + struct fillvdir_arg *arg = container_of(ctx, struct fillvdir_arg, ctx); + char *name = (void *)__name; + struct super_block *sb; + ino_t ino; + const unsigned char shwh = !!au_ftest_fillvdir(arg->flags, SHWH); + + arg->err = 0; + sb = arg->file->f_path.dentry->d_sb; + au_fset_fillvdir(arg->flags, CALLED); + /* smp_mb(); */ + if (nlen <= AUFS_WH_PFX_LEN + || memcmp(name, AUFS_WH_PFX, AUFS_WH_PFX_LEN)) { + if (test_known(&arg->delist, name, nlen) + || au_nhash_test_known_wh(&arg->whlist, name, nlen)) + goto out; /* already exists or whiteouted */ + + arg->err = au_ino(sb, arg->bindex, h_ino, d_type, &ino); + if (!arg->err) { + if (unlikely(nlen > AUFS_MAX_NAMELEN)) + d_type = DT_UNKNOWN; + arg->err = append_de(arg->vdir, name, nlen, ino, + d_type, &arg->delist); + } + } else if (au_ftest_fillvdir(arg->flags, WHABLE)) { + name += AUFS_WH_PFX_LEN; + nlen -= AUFS_WH_PFX_LEN; + if (au_nhash_test_known_wh(&arg->whlist, name, nlen)) + goto out; /* already whiteouted */ + + if (shwh) + arg->err = au_wh_ino(sb, arg->bindex, h_ino, d_type, + &ino); + if (!arg->err) { + if (nlen <= AUFS_MAX_NAMELEN + AUFS_WH_PFX_LEN) + d_type = DT_UNKNOWN; + arg->err = au_nhash_append_wh + (&arg->whlist, name, nlen, ino, d_type, + arg->bindex, shwh); + } + } + +out: + if (!arg->err) + arg->vdir->vd_jiffy = jiffies; + /* smp_mb(); */ + AuTraceErr(arg->err); + return arg->err; +} + +static int au_handle_shwh(struct super_block *sb, struct au_vdir *vdir, + struct au_nhash *whlist, struct au_nhash *delist) +{ +#ifdef CONFIG_AUFS_SHWH + int err; + unsigned int nh, u; + struct hlist_head *head; + struct au_vdir_wh *pos; + struct hlist_node *n; + char *p, *o; + struct au_vdir_destr *destr; + + AuDebugOn(!au_opt_test(au_mntflags(sb), SHWH)); + + err = -ENOMEM; + o = p = (void *)__get_free_page(GFP_NOFS); + if (unlikely(!p)) + goto out; + + err = 0; + nh = whlist->nh_num; + memcpy(p, AUFS_WH_PFX, AUFS_WH_PFX_LEN); + p += AUFS_WH_PFX_LEN; + for (u = 0; u < nh; u++) { + head = whlist->nh_head + u; + hlist_for_each_entry_safe(pos, n, head, wh_hash) { + destr = &pos->wh_str; + memcpy(p, destr->name, destr->len); + err = append_de(vdir, o, destr->len + AUFS_WH_PFX_LEN, + pos->wh_ino, pos->wh_type, delist); + if (unlikely(err)) + break; + } + } + + free_page((unsigned long)o); + +out: + AuTraceErr(err); + return err; +#else + return 0; +#endif +} + +static int au_do_read_vdir(struct fillvdir_arg *arg) +{ + int err; + unsigned int rdhash; + loff_t offset; + aufs_bindex_t bbot, bindex, btop; + unsigned char shwh; + struct file *hf, *file; + struct super_block *sb; + + file = arg->file; + sb = file->f_path.dentry->d_sb; + SiMustAnyLock(sb); + + rdhash = au_sbi(sb)->si_rdhash; + if (!rdhash) + rdhash = au_rdhash_est(au_dir_size(file, /*dentry*/NULL)); + err = au_nhash_alloc(&arg->delist, rdhash, GFP_NOFS); + if (unlikely(err)) + goto out; + err = au_nhash_alloc(&arg->whlist, rdhash, GFP_NOFS); + if (unlikely(err)) + goto out_delist; + + err = 0; + arg->flags = 0; + shwh = 0; + if (au_opt_test(au_mntflags(sb), SHWH)) { + shwh = 1; + au_fset_fillvdir(arg->flags, SHWH); + } + btop = au_fbtop(file); + bbot = au_fbbot_dir(file); + for (bindex = btop; !err && bindex <= bbot; bindex++) { + hf = au_hf_dir(file, bindex); + if (!hf) + continue; + + offset = vfsub_llseek(hf, 0, SEEK_SET); + err = offset; + if (unlikely(offset)) + break; + + arg->bindex = bindex; + au_fclr_fillvdir(arg->flags, WHABLE); + if (shwh + || (bindex != bbot + && au_br_whable(au_sbr_perm(sb, bindex)))) + au_fset_fillvdir(arg->flags, WHABLE); + do { + arg->err = 0; + au_fclr_fillvdir(arg->flags, CALLED); + /* smp_mb(); */ + err = vfsub_iterate_dir(hf, &arg->ctx); + if (err >= 0) + err = arg->err; + } while (!err && au_ftest_fillvdir(arg->flags, CALLED)); + + /* + * dir_relax() may be good for concurrency, but aufs should not + * use it since it will cause a lockdep problem. + */ + } + + if (!err && shwh) + err = au_handle_shwh(sb, arg->vdir, &arg->whlist, &arg->delist); + + au_nhash_wh_free(&arg->whlist); + +out_delist: + au_nhash_de_free(&arg->delist); +out: + return err; +} + +static int read_vdir(struct file *file, int may_read) +{ + int err; + unsigned long expire; + unsigned char do_read; + struct fillvdir_arg arg = { + .ctx = { + .actor = fillvdir + } + }; + struct inode *inode; + struct au_vdir *vdir, *allocated; + + err = 0; + inode = file_inode(file); + IMustLock(inode); + IiMustWriteLock(inode); + SiMustAnyLock(inode->i_sb); + + allocated = NULL; + do_read = 0; + expire = au_sbi(inode->i_sb)->si_rdcache; + vdir = au_ivdir(inode); + if (!vdir) { + do_read = 1; + vdir = alloc_vdir(file); + err = PTR_ERR(vdir); + if (IS_ERR(vdir)) + goto out; + err = 0; + allocated = vdir; + } else if (may_read + && (inode->i_version != vdir->vd_version + || time_after(jiffies, vdir->vd_jiffy + expire))) { + do_read = 1; + err = reinit_vdir(vdir); + if (unlikely(err)) + goto out; + } + + if (!do_read) + return 0; /* success */ + + arg.file = file; + arg.vdir = vdir; + err = au_do_read_vdir(&arg); + if (!err) { + /* file->f_pos = 0; */ /* todo: ctx->pos? */ + vdir->vd_version = inode->i_version; + vdir->vd_last.ul = 0; + vdir->vd_last.p.deblk = vdir->vd_deblk[0]; + if (allocated) + au_set_ivdir(inode, allocated); + } else if (allocated) + au_vdir_free(allocated); + +out: + return err; +} + +static int copy_vdir(struct au_vdir *tgt, struct au_vdir *src) +{ + int err, rerr; + unsigned long ul, n; + const unsigned int deblk_sz = src->vd_deblk_sz; + + AuDebugOn(tgt->vd_nblk != 1); + + err = -ENOMEM; + if (tgt->vd_nblk < src->vd_nblk) { + unsigned char **p; + + p = au_krealloc(tgt->vd_deblk, sizeof(*p) * src->vd_nblk, + GFP_NOFS, /*may_shrink*/0); + if (unlikely(!p)) + goto out; + tgt->vd_deblk = p; + } + + if (tgt->vd_deblk_sz != deblk_sz) { + unsigned char *p; + + tgt->vd_deblk_sz = deblk_sz; + p = au_krealloc(tgt->vd_deblk[0], deblk_sz, GFP_NOFS, + /*may_shrink*/1); + if (unlikely(!p)) + goto out; + tgt->vd_deblk[0] = p; + } + memcpy(tgt->vd_deblk[0], src->vd_deblk[0], deblk_sz); + tgt->vd_version = src->vd_version; + tgt->vd_jiffy = src->vd_jiffy; + + n = src->vd_nblk; + for (ul = 1; ul < n; ul++) { + tgt->vd_deblk[ul] = kmemdup(src->vd_deblk[ul], deblk_sz, + GFP_NOFS); + if (unlikely(!tgt->vd_deblk[ul])) + goto out; + tgt->vd_nblk++; + } + tgt->vd_nblk = n; + tgt->vd_last.ul = tgt->vd_last.ul; + tgt->vd_last.p.deblk = tgt->vd_deblk[tgt->vd_last.ul]; + tgt->vd_last.p.deblk += src->vd_last.p.deblk + - src->vd_deblk[src->vd_last.ul]; + /* smp_mb(); */ + return 0; /* success */ + +out: + rerr = reinit_vdir(tgt); + BUG_ON(rerr); + return err; +} + +int au_vdir_init(struct file *file) +{ + int err; + struct inode *inode; + struct au_vdir *vdir_cache, *allocated; + + /* test file->f_pos here instead of ctx->pos */ + err = read_vdir(file, !file->f_pos); + if (unlikely(err)) + goto out; + + allocated = NULL; + vdir_cache = au_fvdir_cache(file); + if (!vdir_cache) { + vdir_cache = alloc_vdir(file); + err = PTR_ERR(vdir_cache); + if (IS_ERR(vdir_cache)) + goto out; + allocated = vdir_cache; + } else if (!file->f_pos && vdir_cache->vd_version != file->f_version) { + /* test file->f_pos here instead of ctx->pos */ + err = reinit_vdir(vdir_cache); + if (unlikely(err)) + goto out; + } else + return 0; /* success */ + + inode = file_inode(file); + err = copy_vdir(vdir_cache, au_ivdir(inode)); + if (!err) { + file->f_version = inode->i_version; + if (allocated) + au_set_fvdir_cache(file, allocated); + } else if (allocated) + au_vdir_free(allocated); + +out: + return err; +} + +static loff_t calc_offset(struct au_vdir *vdir) +{ + loff_t offset; + union au_vdir_deblk_p p; + + p.deblk = vdir->vd_deblk[vdir->vd_last.ul]; + offset = vdir->vd_last.p.deblk - p.deblk; + offset += vdir->vd_deblk_sz * vdir->vd_last.ul; + return offset; +} + +/* returns true or false */ +static int seek_vdir(struct file *file, struct dir_context *ctx) +{ + int valid; + unsigned int deblk_sz; + unsigned long ul, n; + loff_t offset; + union au_vdir_deblk_p p, deblk_end; + struct au_vdir *vdir_cache; + + valid = 1; + vdir_cache = au_fvdir_cache(file); + offset = calc_offset(vdir_cache); + AuDbg("offset %lld\n", offset); + if (ctx->pos == offset) + goto out; + + vdir_cache->vd_last.ul = 0; + vdir_cache->vd_last.p.deblk = vdir_cache->vd_deblk[0]; + if (!ctx->pos) + goto out; + + valid = 0; + deblk_sz = vdir_cache->vd_deblk_sz; + ul = div64_u64(ctx->pos, deblk_sz); + AuDbg("ul %lu\n", ul); + if (ul >= vdir_cache->vd_nblk) + goto out; + + n = vdir_cache->vd_nblk; + for (; ul < n; ul++) { + p.deblk = vdir_cache->vd_deblk[ul]; + deblk_end.deblk = p.deblk + deblk_sz; + offset = ul; + offset *= deblk_sz; + while (!is_deblk_end(&p, &deblk_end) && offset < ctx->pos) { + unsigned int l; + + l = calc_size(p.de->de_str.len); + offset += l; + p.deblk += l; + } + if (!is_deblk_end(&p, &deblk_end)) { + valid = 1; + vdir_cache->vd_last.ul = ul; + vdir_cache->vd_last.p = p; + break; + } + } + +out: + /* smp_mb(); */ + if (!valid) + AuDbg("valid %d\n", !valid); + return valid; +} + +int au_vdir_fill_de(struct file *file, struct dir_context *ctx) +{ + unsigned int l, deblk_sz; + union au_vdir_deblk_p deblk_end; + struct au_vdir *vdir_cache; + struct au_vdir_de *de; + + vdir_cache = au_fvdir_cache(file); + if (!seek_vdir(file, ctx)) + return 0; + + deblk_sz = vdir_cache->vd_deblk_sz; + while (1) { + deblk_end.deblk = vdir_cache->vd_deblk[vdir_cache->vd_last.ul]; + deblk_end.deblk += deblk_sz; + while (!is_deblk_end(&vdir_cache->vd_last.p, &deblk_end)) { + de = vdir_cache->vd_last.p.de; + AuDbg("%.*s, off%lld, i%lu, dt%d\n", + de->de_str.len, de->de_str.name, ctx->pos, + (unsigned long)de->de_ino, de->de_type); + if (unlikely(!dir_emit(ctx, de->de_str.name, + de->de_str.len, de->de_ino, + de->de_type))) { + /* todo: ignore the error caused by udba? */ + /* return err; */ + return 0; + } + + l = calc_size(de->de_str.len); + vdir_cache->vd_last.p.deblk += l; + ctx->pos += l; + } + if (vdir_cache->vd_last.ul < vdir_cache->vd_nblk - 1) { + vdir_cache->vd_last.ul++; + vdir_cache->vd_last.p.deblk + = vdir_cache->vd_deblk[vdir_cache->vd_last.ul]; + ctx->pos = deblk_sz * vdir_cache->vd_last.ul; + continue; + } + break; + } + + /* smp_mb(); */ + return 0; +} diff --git a/include/fs/aufs/vfsub.c b/include/fs/aufs/vfsub.c new file mode 100644 index 00000000000..732d81cb45c --- /dev/null +++ b/include/fs/aufs/vfsub.c @@ -0,0 +1,894 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * sub-routines for VFS + */ + +#include +#include +#include +#include +#include +#include "aufs.h" + +#ifdef CONFIG_AUFS_BR_FUSE +int vfsub_test_mntns(struct vfsmount *mnt, struct super_block *h_sb) +{ + if (!au_test_fuse(h_sb) || !au_userns) + return 0; + + return is_current_mnt_ns(mnt) ? 0 : -EACCES; +} +#endif + +int vfsub_sync_filesystem(struct super_block *h_sb, int wait) +{ + int err; + + lockdep_off(); + down_read(&h_sb->s_umount); + err = __sync_filesystem(h_sb, wait); + up_read(&h_sb->s_umount); + lockdep_on(); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +int vfsub_update_h_iattr(struct path *h_path, int *did) +{ + int err; + struct kstat st; + struct super_block *h_sb; + + /* for remote fs, leave work for its getattr or d_revalidate */ + /* for bad i_attr fs, handle them in aufs_getattr() */ + /* still some fs may acquire i_mutex. we need to skip them */ + err = 0; + if (!did) + did = &err; + h_sb = h_path->dentry->d_sb; + *did = (!au_test_fs_remote(h_sb) && au_test_fs_refresh_iattr(h_sb)); + if (*did) + err = vfsub_getattr(h_path, &st); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +struct file *vfsub_dentry_open(struct path *path, int flags) +{ + struct file *file; + + file = dentry_open(path, flags /* | __FMODE_NONOTIFY */, + current_cred()); + if (!IS_ERR_OR_NULL(file) + && (file->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ) + i_readcount_inc(d_inode(path->dentry)); + + return file; +} + +struct file *vfsub_filp_open(const char *path, int oflags, int mode) +{ + struct file *file; + + lockdep_off(); + file = filp_open(path, + oflags /* | __FMODE_NONOTIFY */, + mode); + lockdep_on(); + if (IS_ERR(file)) + goto out; + vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/ + +out: + return file; +} + +/* + * Ideally this function should call VFS:do_last() in order to keep all its + * checkings. But it is very hard for aufs to regenerate several VFS internal + * structure such as nameidata. This is a second (or third) best approach. + * cf. linux/fs/namei.c:do_last(), lookup_open() and atomic_open(). + */ +int vfsub_atomic_open(struct inode *dir, struct dentry *dentry, + struct vfsub_aopen_args *args, struct au_branch *br) +{ + int err; + struct file *file = args->file; + /* copied from linux/fs/namei.c:atomic_open() */ + struct dentry *const DENTRY_NOT_SET = (void *)-1UL; + + IMustLock(dir); + AuDebugOn(!dir->i_op->atomic_open); + + err = au_br_test_oflag(args->open_flag, br); + if (unlikely(err)) + goto out; + + args->file->f_path.dentry = DENTRY_NOT_SET; + args->file->f_path.mnt = au_br_mnt(br); + err = dir->i_op->atomic_open(dir, dentry, file, args->open_flag, + args->create_mode, args->opened); + if (err >= 0) { + /* some filesystems don't set FILE_CREATED while succeeded? */ + if (*args->opened & FILE_CREATED) + fsnotify_create(dir, dentry); + } else + goto out; + + + if (!err) { + /* todo: call VFS:may_open() here */ + err = open_check_o_direct(file); + /* todo: ima_file_check() too? */ + if (!err && (args->open_flag & __FMODE_EXEC)) + err = deny_write_access(file); + if (unlikely(err)) + /* note that the file is created and still opened */ + goto out; + } + + au_br_get(br); + fsnotify_open(file); + +out: + return err; +} + +int vfsub_kern_path(const char *name, unsigned int flags, struct path *path) +{ + int err; + + err = kern_path(name, flags, path); + if (!err && d_is_positive(path->dentry)) + vfsub_update_h_iattr(path, /*did*/NULL); /*ignore*/ + return err; +} + +struct dentry *vfsub_lookup_one_len_unlocked(const char *name, + struct dentry *parent, int len) +{ + struct path path = { + .mnt = NULL + }; + + path.dentry = lookup_one_len_unlocked(name, parent, len); + if (IS_ERR(path.dentry)) + goto out; + if (d_is_positive(path.dentry)) + vfsub_update_h_iattr(&path, /*did*/NULL); /*ignore*/ + +out: + AuTraceErrPtr(path.dentry); + return path.dentry; +} + +struct dentry *vfsub_lookup_one_len(const char *name, struct dentry *parent, + int len) +{ + struct path path = { + .mnt = NULL + }; + + /* VFS checks it too, but by WARN_ON_ONCE() */ + IMustLock(d_inode(parent)); + + path.dentry = lookup_one_len(name, parent, len); + if (IS_ERR(path.dentry)) + goto out; + if (d_is_positive(path.dentry)) + vfsub_update_h_iattr(&path, /*did*/NULL); /*ignore*/ + +out: + AuTraceErrPtr(path.dentry); + return path.dentry; +} + +void vfsub_call_lkup_one(void *args) +{ + struct vfsub_lkup_one_args *a = args; + *a->errp = vfsub_lkup_one(a->name, a->parent); +} + +/* ---------------------------------------------------------------------- */ + +struct dentry *vfsub_lock_rename(struct dentry *d1, struct au_hinode *hdir1, + struct dentry *d2, struct au_hinode *hdir2) +{ + struct dentry *d; + + lockdep_off(); + d = lock_rename(d1, d2); + lockdep_on(); + au_hn_suspend(hdir1); + if (hdir1 != hdir2) + au_hn_suspend(hdir2); + + return d; +} + +void vfsub_unlock_rename(struct dentry *d1, struct au_hinode *hdir1, + struct dentry *d2, struct au_hinode *hdir2) +{ + au_hn_resume(hdir1); + if (hdir1 != hdir2) + au_hn_resume(hdir2); + lockdep_off(); + unlock_rename(d1, d2); + lockdep_on(); +} + +/* ---------------------------------------------------------------------- */ + +int vfsub_create(struct inode *dir, struct path *path, int mode, bool want_excl) +{ + int err; + struct dentry *d; + + IMustLock(dir); + + d = path->dentry; + path->dentry = d->d_parent; + err = security_path_mknod(path, d, mode, 0); + path->dentry = d; + if (unlikely(err)) + goto out; + + lockdep_off(); + err = vfs_create(dir, path->dentry, mode, want_excl); + lockdep_on(); + if (!err) { + struct path tmp = *path; + int did; + + vfsub_update_h_iattr(&tmp, &did); + if (did) { + tmp.dentry = path->dentry->d_parent; + vfsub_update_h_iattr(&tmp, /*did*/NULL); + } + /*ignore*/ + } + +out: + return err; +} + +int vfsub_symlink(struct inode *dir, struct path *path, const char *symname) +{ + int err; + struct dentry *d; + + IMustLock(dir); + + d = path->dentry; + path->dentry = d->d_parent; + err = security_path_symlink(path, d, symname); + path->dentry = d; + if (unlikely(err)) + goto out; + + lockdep_off(); + err = vfs_symlink(dir, path->dentry, symname); + lockdep_on(); + if (!err) { + struct path tmp = *path; + int did; + + vfsub_update_h_iattr(&tmp, &did); + if (did) { + tmp.dentry = path->dentry->d_parent; + vfsub_update_h_iattr(&tmp, /*did*/NULL); + } + /*ignore*/ + } + +out: + return err; +} + +int vfsub_mknod(struct inode *dir, struct path *path, int mode, dev_t dev) +{ + int err; + struct dentry *d; + + IMustLock(dir); + + d = path->dentry; + path->dentry = d->d_parent; + err = security_path_mknod(path, d, mode, new_encode_dev(dev)); + path->dentry = d; + if (unlikely(err)) + goto out; + + lockdep_off(); + err = vfs_mknod(dir, path->dentry, mode, dev); + lockdep_on(); + if (!err) { + struct path tmp = *path; + int did; + + vfsub_update_h_iattr(&tmp, &did); + if (did) { + tmp.dentry = path->dentry->d_parent; + vfsub_update_h_iattr(&tmp, /*did*/NULL); + } + /*ignore*/ + } + +out: + return err; +} + +static int au_test_nlink(struct inode *inode) +{ + const unsigned int link_max = UINT_MAX >> 1; /* rough margin */ + + if (!au_test_fs_no_limit_nlink(inode->i_sb) + || inode->i_nlink < link_max) + return 0; + return -EMLINK; +} + +int vfsub_link(struct dentry *src_dentry, struct inode *dir, struct path *path, + struct inode **delegated_inode) +{ + int err; + struct dentry *d; + + IMustLock(dir); + + err = au_test_nlink(d_inode(src_dentry)); + if (unlikely(err)) + return err; + + /* we don't call may_linkat() */ + d = path->dentry; + path->dentry = d->d_parent; + err = security_path_link(src_dentry, path, d); + path->dentry = d; + if (unlikely(err)) + goto out; + + lockdep_off(); + err = vfs_link(src_dentry, dir, path->dentry, delegated_inode); + lockdep_on(); + if (!err) { + struct path tmp = *path; + int did; + + /* fuse has different memory inode for the same inumber */ + vfsub_update_h_iattr(&tmp, &did); + if (did) { + tmp.dentry = path->dentry->d_parent; + vfsub_update_h_iattr(&tmp, /*did*/NULL); + tmp.dentry = src_dentry; + vfsub_update_h_iattr(&tmp, /*did*/NULL); + } + /*ignore*/ + } + +out: + return err; +} + +int vfsub_rename(struct inode *src_dir, struct dentry *src_dentry, + struct inode *dir, struct path *path, + struct inode **delegated_inode, unsigned int flags) +{ + int err; + struct path tmp = { + .mnt = path->mnt + }; + struct dentry *d; + + IMustLock(dir); + IMustLock(src_dir); + + d = path->dentry; + path->dentry = d->d_parent; + tmp.dentry = src_dentry->d_parent; + err = security_path_rename(&tmp, src_dentry, path, d, /*flags*/0); + path->dentry = d; + if (unlikely(err)) + goto out; + + lockdep_off(); + err = vfs_rename(src_dir, src_dentry, dir, path->dentry, + delegated_inode, flags); + lockdep_on(); + if (!err) { + int did; + + tmp.dentry = d->d_parent; + vfsub_update_h_iattr(&tmp, &did); + if (did) { + tmp.dentry = src_dentry; + vfsub_update_h_iattr(&tmp, /*did*/NULL); + tmp.dentry = src_dentry->d_parent; + vfsub_update_h_iattr(&tmp, /*did*/NULL); + } + /*ignore*/ + } + +out: + return err; +} + +int vfsub_mkdir(struct inode *dir, struct path *path, int mode) +{ + int err; + struct dentry *d; + + IMustLock(dir); + + d = path->dentry; + path->dentry = d->d_parent; + err = security_path_mkdir(path, d, mode); + path->dentry = d; + if (unlikely(err)) + goto out; + + lockdep_off(); + err = vfs_mkdir(dir, path->dentry, mode); + lockdep_on(); + if (!err) { + struct path tmp = *path; + int did; + + vfsub_update_h_iattr(&tmp, &did); + if (did) { + tmp.dentry = path->dentry->d_parent; + vfsub_update_h_iattr(&tmp, /*did*/NULL); + } + /*ignore*/ + } + +out: + return err; +} + +int vfsub_rmdir(struct inode *dir, struct path *path) +{ + int err; + struct dentry *d; + + IMustLock(dir); + + d = path->dentry; + path->dentry = d->d_parent; + err = security_path_rmdir(path, d); + path->dentry = d; + if (unlikely(err)) + goto out; + + lockdep_off(); + err = vfs_rmdir(dir, path->dentry); + lockdep_on(); + if (!err) { + struct path tmp = { + .dentry = path->dentry->d_parent, + .mnt = path->mnt + }; + + vfsub_update_h_iattr(&tmp, /*did*/NULL); /*ignore*/ + } + +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* todo: support mmap_sem? */ +ssize_t vfsub_read_u(struct file *file, char __user *ubuf, size_t count, + loff_t *ppos) +{ + ssize_t err; + + lockdep_off(); + err = vfs_read(file, ubuf, count, ppos); + lockdep_on(); + if (err >= 0) + vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/ + return err; +} + +/* todo: kernel_read()? */ +ssize_t vfsub_read_k(struct file *file, void *kbuf, size_t count, + loff_t *ppos) +{ + ssize_t err; + mm_segment_t oldfs; + union { + void *k; + char __user *u; + } buf; + + buf.k = kbuf; + oldfs = get_fs(); + set_fs(KERNEL_DS); + err = vfsub_read_u(file, buf.u, count, ppos); + set_fs(oldfs); + return err; +} + +ssize_t vfsub_write_u(struct file *file, const char __user *ubuf, size_t count, + loff_t *ppos) +{ + ssize_t err; + + lockdep_off(); + err = vfs_write(file, ubuf, count, ppos); + lockdep_on(); + if (err >= 0) + vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/ + return err; +} + +ssize_t vfsub_write_k(struct file *file, void *kbuf, size_t count, loff_t *ppos) +{ + ssize_t err; + mm_segment_t oldfs; + union { + void *k; + const char __user *u; + } buf; + + buf.k = kbuf; + oldfs = get_fs(); + set_fs(KERNEL_DS); + err = vfsub_write_u(file, buf.u, count, ppos); + set_fs(oldfs); + return err; +} + +int vfsub_flush(struct file *file, fl_owner_t id) +{ + int err; + + err = 0; + if (file->f_op->flush) { + if (!au_test_nfs(file->f_path.dentry->d_sb)) + err = file->f_op->flush(file, id); + else { + lockdep_off(); + err = file->f_op->flush(file, id); + lockdep_on(); + } + if (!err) + vfsub_update_h_iattr(&file->f_path, /*did*/NULL); + /*ignore*/ + } + return err; +} + +int vfsub_iterate_dir(struct file *file, struct dir_context *ctx) +{ + int err; + + AuDbg("%pD, ctx{%pf, %llu}\n", file, ctx->actor, ctx->pos); + + lockdep_off(); + err = iterate_dir(file, ctx); + lockdep_on(); + if (err >= 0) + vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/ + + return err; +} + +long vfsub_splice_to(struct file *in, loff_t *ppos, + struct pipe_inode_info *pipe, size_t len, + unsigned int flags) +{ + long err; + + lockdep_off(); + err = do_splice_to(in, ppos, pipe, len, flags); + lockdep_on(); + file_accessed(in); + if (err >= 0) + vfsub_update_h_iattr(&in->f_path, /*did*/NULL); /*ignore*/ + return err; +} + +long vfsub_splice_from(struct pipe_inode_info *pipe, struct file *out, + loff_t *ppos, size_t len, unsigned int flags) +{ + long err; + + lockdep_off(); + err = do_splice_from(pipe, out, ppos, len, flags); + lockdep_on(); + if (err >= 0) + vfsub_update_h_iattr(&out->f_path, /*did*/NULL); /*ignore*/ + return err; +} + +int vfsub_fsync(struct file *file, struct path *path, int datasync) +{ + int err; + + /* file can be NULL */ + lockdep_off(); + err = vfs_fsync(file, datasync); + lockdep_on(); + if (!err) { + if (!path) { + AuDebugOn(!file); + path = &file->f_path; + } + vfsub_update_h_iattr(path, /*did*/NULL); /*ignore*/ + } + return err; +} + +/* cf. open.c:do_sys_truncate() and do_sys_ftruncate() */ +int vfsub_trunc(struct path *h_path, loff_t length, unsigned int attr, + struct file *h_file) +{ + int err; + struct inode *h_inode; + struct super_block *h_sb; + + if (!h_file) { + err = vfsub_truncate(h_path, length); + goto out; + } + + h_inode = d_inode(h_path->dentry); + h_sb = h_inode->i_sb; + lockdep_off(); + sb_start_write(h_sb); + lockdep_on(); + err = locks_verify_truncate(h_inode, h_file, length); + if (!err) + err = security_path_truncate(h_path); + if (!err) { + lockdep_off(); + err = do_truncate(h_path->dentry, length, attr, h_file); + lockdep_on(); + } + lockdep_off(); + sb_end_write(h_sb); + lockdep_on(); + +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +struct au_vfsub_mkdir_args { + int *errp; + struct inode *dir; + struct path *path; + int mode; +}; + +static void au_call_vfsub_mkdir(void *args) +{ + struct au_vfsub_mkdir_args *a = args; + *a->errp = vfsub_mkdir(a->dir, a->path, a->mode); +} + +int vfsub_sio_mkdir(struct inode *dir, struct path *path, int mode) +{ + int err, do_sio, wkq_err; + + do_sio = au_test_h_perm_sio(dir, MAY_EXEC | MAY_WRITE); + if (!do_sio) { + lockdep_off(); + err = vfsub_mkdir(dir, path, mode); + lockdep_on(); + } else { + struct au_vfsub_mkdir_args args = { + .errp = &err, + .dir = dir, + .path = path, + .mode = mode + }; + wkq_err = au_wkq_wait(au_call_vfsub_mkdir, &args); + if (unlikely(wkq_err)) + err = wkq_err; + } + + return err; +} + +struct au_vfsub_rmdir_args { + int *errp; + struct inode *dir; + struct path *path; +}; + +static void au_call_vfsub_rmdir(void *args) +{ + struct au_vfsub_rmdir_args *a = args; + *a->errp = vfsub_rmdir(a->dir, a->path); +} + +int vfsub_sio_rmdir(struct inode *dir, struct path *path) +{ + int err, do_sio, wkq_err; + + do_sio = au_test_h_perm_sio(dir, MAY_EXEC | MAY_WRITE); + if (!do_sio) { + lockdep_off(); + err = vfsub_rmdir(dir, path); + lockdep_on(); + } else { + struct au_vfsub_rmdir_args args = { + .errp = &err, + .dir = dir, + .path = path + }; + wkq_err = au_wkq_wait(au_call_vfsub_rmdir, &args); + if (unlikely(wkq_err)) + err = wkq_err; + } + + return err; +} + +/* ---------------------------------------------------------------------- */ + +struct notify_change_args { + int *errp; + struct path *path; + struct iattr *ia; + struct inode **delegated_inode; +}; + +static void call_notify_change(void *args) +{ + struct notify_change_args *a = args; + struct inode *h_inode; + + h_inode = d_inode(a->path->dentry); + IMustLock(h_inode); + + *a->errp = -EPERM; + if (!IS_IMMUTABLE(h_inode) && !IS_APPEND(h_inode)) { + lockdep_off(); + *a->errp = notify_change(a->path->dentry, a->ia, + a->delegated_inode); + lockdep_on(); + if (!*a->errp) + vfsub_update_h_iattr(a->path, /*did*/NULL); /*ignore*/ + } + AuTraceErr(*a->errp); +} + +int vfsub_notify_change(struct path *path, struct iattr *ia, + struct inode **delegated_inode) +{ + int err; + struct notify_change_args args = { + .errp = &err, + .path = path, + .ia = ia, + .delegated_inode = delegated_inode + }; + + call_notify_change(&args); + + return err; +} + +int vfsub_sio_notify_change(struct path *path, struct iattr *ia, + struct inode **delegated_inode) +{ + int err, wkq_err; + struct notify_change_args args = { + .errp = &err, + .path = path, + .ia = ia, + .delegated_inode = delegated_inode + }; + + wkq_err = au_wkq_wait(call_notify_change, &args); + if (unlikely(wkq_err)) + err = wkq_err; + + return err; +} + +/* ---------------------------------------------------------------------- */ + +struct unlink_args { + int *errp; + struct inode *dir; + struct path *path; + struct inode **delegated_inode; +}; + +static void call_unlink(void *args) +{ + struct unlink_args *a = args; + struct dentry *d = a->path->dentry; + struct inode *h_inode; + const int stop_sillyrename = (au_test_nfs(d->d_sb) + && au_dcount(d) == 1); + + IMustLock(a->dir); + + a->path->dentry = d->d_parent; + *a->errp = security_path_unlink(a->path, d); + a->path->dentry = d; + if (unlikely(*a->errp)) + return; + + if (!stop_sillyrename) + dget(d); + h_inode = NULL; + if (d_is_positive(d)) { + h_inode = d_inode(d); + ihold(h_inode); + } + + lockdep_off(); + *a->errp = vfs_unlink(a->dir, d, a->delegated_inode); + lockdep_on(); + if (!*a->errp) { + struct path tmp = { + .dentry = d->d_parent, + .mnt = a->path->mnt + }; + vfsub_update_h_iattr(&tmp, /*did*/NULL); /*ignore*/ + } + + if (!stop_sillyrename) + dput(d); + if (h_inode) + iput(h_inode); + + AuTraceErr(*a->errp); +} + +/* + * @dir: must be locked. + * @dentry: target dentry. + */ +int vfsub_unlink(struct inode *dir, struct path *path, + struct inode **delegated_inode, int force) +{ + int err; + struct unlink_args args = { + .errp = &err, + .dir = dir, + .path = path, + .delegated_inode = delegated_inode + }; + + if (!force) + call_unlink(&args); + else { + int wkq_err; + + wkq_err = au_wkq_wait(call_unlink, &args); + if (unlikely(wkq_err)) + err = wkq_err; + } + + return err; +} diff --git a/include/fs/aufs/vfsub.h b/include/fs/aufs/vfsub.h new file mode 100644 index 00000000000..9dd6cb21875 --- /dev/null +++ b/include/fs/aufs/vfsub.h @@ -0,0 +1,360 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * sub-routines for VFS + */ + +#ifndef __AUFS_VFSUB_H__ +#define __AUFS_VFSUB_H__ + +#ifdef __KERNEL__ + +#include +#include +#include +#include +#include "debug.h" + +/* copied from linux/fs/internal.h */ +/* todo: BAD approach!! */ +extern void __mnt_drop_write(struct vfsmount *); +extern int open_check_o_direct(struct file *f); + +/* ---------------------------------------------------------------------- */ + +/* lock subclass for lower inode */ +/* default MAX_LOCKDEP_SUBCLASSES(8) is not enough */ +/* reduce? gave up. */ +enum { + AuLsc_I_Begin = I_MUTEX_PARENT2, /* 5 */ + AuLsc_I_PARENT, /* lower inode, parent first */ + AuLsc_I_PARENT2, /* copyup dirs */ + AuLsc_I_PARENT3, /* copyup wh */ + AuLsc_I_CHILD, + AuLsc_I_CHILD2, + AuLsc_I_End +}; + +/* to debug easier, do not make them inlined functions */ +#define MtxMustLock(mtx) AuDebugOn(!mutex_is_locked(mtx)) +#define IMustLock(i) AuDebugOn(!inode_is_locked(i)) + +/* why VFS doesn't define it? */ +static inline +void vfsub_inode_lock_shared_nested(struct inode *inode, unsigned int sc) +{ + down_read_nested(&inode->i_rwsem, sc); +} + +/* ---------------------------------------------------------------------- */ + +static inline void vfsub_drop_nlink(struct inode *inode) +{ + AuDebugOn(!inode->i_nlink); + drop_nlink(inode); +} + +static inline void vfsub_dead_dir(struct inode *inode) +{ + AuDebugOn(!S_ISDIR(inode->i_mode)); + inode->i_flags |= S_DEAD; + clear_nlink(inode); +} + +static inline int vfsub_native_ro(struct inode *inode) +{ + return sb_rdonly(inode->i_sb) + || IS_RDONLY(inode) + /* || IS_APPEND(inode) */ + || IS_IMMUTABLE(inode); +} + +#ifdef CONFIG_AUFS_BR_FUSE +int vfsub_test_mntns(struct vfsmount *mnt, struct super_block *h_sb); +#else +AuStubInt0(vfsub_test_mntns, struct vfsmount *mnt, struct super_block *h_sb); +#endif + +int vfsub_sync_filesystem(struct super_block *h_sb, int wait); + +/* ---------------------------------------------------------------------- */ + +int vfsub_update_h_iattr(struct path *h_path, int *did); +struct file *vfsub_dentry_open(struct path *path, int flags); +struct file *vfsub_filp_open(const char *path, int oflags, int mode); +struct vfsub_aopen_args { + struct file *file; + unsigned int open_flag; + umode_t create_mode; + int *opened; +}; +struct au_branch; +int vfsub_atomic_open(struct inode *dir, struct dentry *dentry, + struct vfsub_aopen_args *args, struct au_branch *br); +int vfsub_kern_path(const char *name, unsigned int flags, struct path *path); + +struct dentry *vfsub_lookup_one_len_unlocked(const char *name, + struct dentry *parent, int len); +struct dentry *vfsub_lookup_one_len(const char *name, struct dentry *parent, + int len); + +struct vfsub_lkup_one_args { + struct dentry **errp; + struct qstr *name; + struct dentry *parent; +}; + +static inline struct dentry *vfsub_lkup_one(struct qstr *name, + struct dentry *parent) +{ + return vfsub_lookup_one_len(name->name, parent, name->len); +} + +void vfsub_call_lkup_one(void *args); + +/* ---------------------------------------------------------------------- */ + +static inline int vfsub_mnt_want_write(struct vfsmount *mnt) +{ + int err; + + lockdep_off(); + err = mnt_want_write(mnt); + lockdep_on(); + return err; +} + +static inline void vfsub_mnt_drop_write(struct vfsmount *mnt) +{ + lockdep_off(); + mnt_drop_write(mnt); + lockdep_on(); +} + +#if 0 /* reserved */ +static inline void vfsub_mnt_drop_write_file(struct file *file) +{ + lockdep_off(); + mnt_drop_write_file(file); + lockdep_on(); +} +#endif + +/* ---------------------------------------------------------------------- */ + +struct au_hinode; +struct dentry *vfsub_lock_rename(struct dentry *d1, struct au_hinode *hdir1, + struct dentry *d2, struct au_hinode *hdir2); +void vfsub_unlock_rename(struct dentry *d1, struct au_hinode *hdir1, + struct dentry *d2, struct au_hinode *hdir2); + +int vfsub_create(struct inode *dir, struct path *path, int mode, + bool want_excl); +int vfsub_symlink(struct inode *dir, struct path *path, + const char *symname); +int vfsub_mknod(struct inode *dir, struct path *path, int mode, dev_t dev); +int vfsub_link(struct dentry *src_dentry, struct inode *dir, + struct path *path, struct inode **delegated_inode); +int vfsub_rename(struct inode *src_hdir, struct dentry *src_dentry, + struct inode *hdir, struct path *path, + struct inode **delegated_inode, unsigned int flags); +int vfsub_mkdir(struct inode *dir, struct path *path, int mode); +int vfsub_rmdir(struct inode *dir, struct path *path); + +/* ---------------------------------------------------------------------- */ + +ssize_t vfsub_read_u(struct file *file, char __user *ubuf, size_t count, + loff_t *ppos); +ssize_t vfsub_read_k(struct file *file, void *kbuf, size_t count, + loff_t *ppos); +ssize_t vfsub_write_u(struct file *file, const char __user *ubuf, size_t count, + loff_t *ppos); +ssize_t vfsub_write_k(struct file *file, void *kbuf, size_t count, + loff_t *ppos); +int vfsub_flush(struct file *file, fl_owner_t id); +int vfsub_iterate_dir(struct file *file, struct dir_context *ctx); + +static inline loff_t vfsub_f_size_read(struct file *file) +{ + return i_size_read(file_inode(file)); +} + +static inline unsigned int vfsub_file_flags(struct file *file) +{ + unsigned int flags; + + spin_lock(&file->f_lock); + flags = file->f_flags; + spin_unlock(&file->f_lock); + + return flags; +} + +static inline int vfsub_file_execed(struct file *file) +{ + /* todo: direct access f_flags */ + return !!(vfsub_file_flags(file) & __FMODE_EXEC); +} + +#if 0 /* reserved */ +static inline void vfsub_file_accessed(struct file *h_file) +{ + file_accessed(h_file); + vfsub_update_h_iattr(&h_file->f_path, /*did*/NULL); /*ignore*/ +} +#endif + +#if 0 /* reserved */ +static inline void vfsub_touch_atime(struct vfsmount *h_mnt, + struct dentry *h_dentry) +{ + struct path h_path = { + .dentry = h_dentry, + .mnt = h_mnt + }; + touch_atime(&h_path); + vfsub_update_h_iattr(&h_path, /*did*/NULL); /*ignore*/ +} +#endif + +static inline int vfsub_update_time(struct inode *h_inode, struct timespec *ts, + int flags) +{ + return update_time(h_inode, ts, flags); + /* no vfsub_update_h_iattr() since we don't have struct path */ +} + +#ifdef CONFIG_FS_POSIX_ACL +static inline int vfsub_acl_chmod(struct inode *h_inode, umode_t h_mode) +{ + int err; + + err = posix_acl_chmod(h_inode, h_mode); + if (err == -EOPNOTSUPP) + err = 0; + return err; +} +#else +AuStubInt0(vfsub_acl_chmod, struct inode *h_inode, umode_t h_mode); +#endif + +long vfsub_splice_to(struct file *in, loff_t *ppos, + struct pipe_inode_info *pipe, size_t len, + unsigned int flags); +long vfsub_splice_from(struct pipe_inode_info *pipe, struct file *out, + loff_t *ppos, size_t len, unsigned int flags); + +static inline long vfsub_truncate(struct path *path, loff_t length) +{ + long err; + + lockdep_off(); + err = vfs_truncate(path, length); + lockdep_on(); + return err; +} + +int vfsub_trunc(struct path *h_path, loff_t length, unsigned int attr, + struct file *h_file); +int vfsub_fsync(struct file *file, struct path *path, int datasync); + +/* + * re-use branch fs's ioctl(FICLONE) while aufs itself doesn't support such + * ioctl. + */ +static inline int vfsub_clone_file_range(struct file *src, struct file *dst, + u64 len) +{ + int err; + + lockdep_off(); + err = vfs_clone_file_range(src, 0, dst, 0, len); + lockdep_on(); + + return err; +} + +/* copy_file_range(2) is a systemcall */ +static inline ssize_t vfsub_copy_file_range(struct file *src, loff_t src_pos, + struct file *dst, loff_t dst_pos, + size_t len, unsigned int flags) +{ + ssize_t ssz; + + lockdep_off(); + ssz = vfs_copy_file_range(src, src_pos, dst, dst_pos, len, flags); + lockdep_on(); + + return ssz; +} + +/* ---------------------------------------------------------------------- */ + +static inline loff_t vfsub_llseek(struct file *file, loff_t offset, int origin) +{ + loff_t err; + + lockdep_off(); + err = vfs_llseek(file, offset, origin); + lockdep_on(); + return err; +} + +/* ---------------------------------------------------------------------- */ + +int vfsub_sio_mkdir(struct inode *dir, struct path *path, int mode); +int vfsub_sio_rmdir(struct inode *dir, struct path *path); +int vfsub_sio_notify_change(struct path *path, struct iattr *ia, + struct inode **delegated_inode); +int vfsub_notify_change(struct path *path, struct iattr *ia, + struct inode **delegated_inode); +int vfsub_unlink(struct inode *dir, struct path *path, + struct inode **delegated_inode, int force); + +static inline int vfsub_getattr(const struct path *path, struct kstat *st) +{ + return vfs_getattr(path, st, STATX_BASIC_STATS, AT_STATX_SYNC_AS_STAT); +} + +/* ---------------------------------------------------------------------- */ + +static inline int vfsub_setxattr(struct dentry *dentry, const char *name, + const void *value, size_t size, int flags) +{ + int err; + + lockdep_off(); + err = vfs_setxattr(dentry, name, value, size, flags); + lockdep_on(); + + return err; +} + +static inline int vfsub_removexattr(struct dentry *dentry, const char *name) +{ + int err; + + lockdep_off(); + err = vfs_removexattr(dentry, name); + lockdep_on(); + + return err; +} + +#endif /* __KERNEL__ */ +#endif /* __AUFS_VFSUB_H__ */ diff --git a/include/fs/aufs/wbr_policy.c b/include/fs/aufs/wbr_policy.c new file mode 100644 index 00000000000..1d365a2e7ff --- /dev/null +++ b/include/fs/aufs/wbr_policy.c @@ -0,0 +1,830 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * policies for selecting one among multiple writable branches + */ + +#include +#include "aufs.h" + +/* subset of cpup_attr() */ +static noinline_for_stack +int au_cpdown_attr(struct path *h_path, struct dentry *h_src) +{ + int err, sbits; + struct iattr ia; + struct inode *h_isrc; + + h_isrc = d_inode(h_src); + ia.ia_valid = ATTR_FORCE | ATTR_MODE | ATTR_UID | ATTR_GID; + ia.ia_mode = h_isrc->i_mode; + ia.ia_uid = h_isrc->i_uid; + ia.ia_gid = h_isrc->i_gid; + sbits = !!(ia.ia_mode & (S_ISUID | S_ISGID)); + au_cpup_attr_flags(d_inode(h_path->dentry), h_isrc->i_flags); + /* no delegation since it is just created */ + err = vfsub_sio_notify_change(h_path, &ia, /*delegated*/NULL); + + /* is this nfs only? */ + if (!err && sbits && au_test_nfs(h_path->dentry->d_sb)) { + ia.ia_valid = ATTR_FORCE | ATTR_MODE; + ia.ia_mode = h_isrc->i_mode; + err = vfsub_sio_notify_change(h_path, &ia, /*delegated*/NULL); + } + + return err; +} + +#define AuCpdown_PARENT_OPQ 1 +#define AuCpdown_WHED (1 << 1) +#define AuCpdown_MADE_DIR (1 << 2) +#define AuCpdown_DIROPQ (1 << 3) +#define au_ftest_cpdown(flags, name) ((flags) & AuCpdown_##name) +#define au_fset_cpdown(flags, name) \ + do { (flags) |= AuCpdown_##name; } while (0) +#define au_fclr_cpdown(flags, name) \ + do { (flags) &= ~AuCpdown_##name; } while (0) + +static int au_cpdown_dir_opq(struct dentry *dentry, aufs_bindex_t bdst, + unsigned int *flags) +{ + int err; + struct dentry *opq_dentry; + + opq_dentry = au_diropq_create(dentry, bdst); + err = PTR_ERR(opq_dentry); + if (IS_ERR(opq_dentry)) + goto out; + dput(opq_dentry); + au_fset_cpdown(*flags, DIROPQ); + +out: + return err; +} + +static int au_cpdown_dir_wh(struct dentry *dentry, struct dentry *h_parent, + struct inode *dir, aufs_bindex_t bdst) +{ + int err; + struct path h_path; + struct au_branch *br; + + br = au_sbr(dentry->d_sb, bdst); + h_path.dentry = au_wh_lkup(h_parent, &dentry->d_name, br); + err = PTR_ERR(h_path.dentry); + if (IS_ERR(h_path.dentry)) + goto out; + + err = 0; + if (d_is_positive(h_path.dentry)) { + h_path.mnt = au_br_mnt(br); + err = au_wh_unlink_dentry(au_h_iptr(dir, bdst), &h_path, + dentry); + } + dput(h_path.dentry); + +out: + return err; +} + +static int au_cpdown_dir(struct dentry *dentry, aufs_bindex_t bdst, + struct au_pin *pin, + struct dentry *h_parent, void *arg) +{ + int err, rerr; + aufs_bindex_t bopq, btop; + struct path h_path; + struct dentry *parent; + struct inode *h_dir, *h_inode, *inode, *dir; + unsigned int *flags = arg; + + btop = au_dbtop(dentry); + /* dentry is di-locked */ + parent = dget_parent(dentry); + dir = d_inode(parent); + h_dir = d_inode(h_parent); + AuDebugOn(h_dir != au_h_iptr(dir, bdst)); + IMustLock(h_dir); + + err = au_lkup_neg(dentry, bdst, /*wh*/0); + if (unlikely(err < 0)) + goto out; + h_path.dentry = au_h_dptr(dentry, bdst); + h_path.mnt = au_sbr_mnt(dentry->d_sb, bdst); + err = vfsub_sio_mkdir(au_h_iptr(dir, bdst), &h_path, + S_IRWXU | S_IRUGO | S_IXUGO); + if (unlikely(err)) + goto out_put; + au_fset_cpdown(*flags, MADE_DIR); + + bopq = au_dbdiropq(dentry); + au_fclr_cpdown(*flags, WHED); + au_fclr_cpdown(*flags, DIROPQ); + if (au_dbwh(dentry) == bdst) + au_fset_cpdown(*flags, WHED); + if (!au_ftest_cpdown(*flags, PARENT_OPQ) && bopq <= bdst) + au_fset_cpdown(*flags, PARENT_OPQ); + h_inode = d_inode(h_path.dentry); + inode_lock_nested(h_inode, AuLsc_I_CHILD); + if (au_ftest_cpdown(*flags, WHED)) { + err = au_cpdown_dir_opq(dentry, bdst, flags); + if (unlikely(err)) { + inode_unlock(h_inode); + goto out_dir; + } + } + + err = au_cpdown_attr(&h_path, au_h_dptr(dentry, btop)); + inode_unlock(h_inode); + if (unlikely(err)) + goto out_opq; + + if (au_ftest_cpdown(*flags, WHED)) { + err = au_cpdown_dir_wh(dentry, h_parent, dir, bdst); + if (unlikely(err)) + goto out_opq; + } + + inode = d_inode(dentry); + if (au_ibbot(inode) < bdst) + au_set_ibbot(inode, bdst); + au_set_h_iptr(inode, bdst, au_igrab(h_inode), + au_hi_flags(inode, /*isdir*/1)); + au_fhsm_wrote(dentry->d_sb, bdst, /*force*/0); + goto out; /* success */ + + /* revert */ +out_opq: + if (au_ftest_cpdown(*flags, DIROPQ)) { + inode_lock_nested(h_inode, AuLsc_I_CHILD); + rerr = au_diropq_remove(dentry, bdst); + inode_unlock(h_inode); + if (unlikely(rerr)) { + AuIOErr("failed removing diropq for %pd b%d (%d)\n", + dentry, bdst, rerr); + err = -EIO; + goto out; + } + } +out_dir: + if (au_ftest_cpdown(*flags, MADE_DIR)) { + rerr = vfsub_sio_rmdir(au_h_iptr(dir, bdst), &h_path); + if (unlikely(rerr)) { + AuIOErr("failed removing %pd b%d (%d)\n", + dentry, bdst, rerr); + err = -EIO; + } + } +out_put: + au_set_h_dptr(dentry, bdst, NULL); + if (au_dbbot(dentry) == bdst) + au_update_dbbot(dentry); +out: + dput(parent); + return err; +} + +int au_cpdown_dirs(struct dentry *dentry, aufs_bindex_t bdst) +{ + int err; + unsigned int flags; + + flags = 0; + err = au_cp_dirs(dentry, bdst, au_cpdown_dir, &flags); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* policies for create */ + +int au_wbr_nonopq(struct dentry *dentry, aufs_bindex_t bindex) +{ + int err, i, j, ndentry; + aufs_bindex_t bopq; + struct au_dcsub_pages dpages; + struct au_dpage *dpage; + struct dentry **dentries, *parent, *d; + + err = au_dpages_init(&dpages, GFP_NOFS); + if (unlikely(err)) + goto out; + parent = dget_parent(dentry); + err = au_dcsub_pages_rev_aufs(&dpages, parent, /*do_include*/0); + if (unlikely(err)) + goto out_free; + + err = bindex; + for (i = 0; i < dpages.ndpage; i++) { + dpage = dpages.dpages + i; + dentries = dpage->dentries; + ndentry = dpage->ndentry; + for (j = 0; j < ndentry; j++) { + d = dentries[j]; + di_read_lock_parent2(d, !AuLock_IR); + bopq = au_dbdiropq(d); + di_read_unlock(d, !AuLock_IR); + if (bopq >= 0 && bopq < err) + err = bopq; + } + } + +out_free: + dput(parent); + au_dpages_free(&dpages); +out: + return err; +} + +static int au_wbr_bu(struct super_block *sb, aufs_bindex_t bindex) +{ + for (; bindex >= 0; bindex--) + if (!au_br_rdonly(au_sbr(sb, bindex))) + return bindex; + return -EROFS; +} + +/* top down parent */ +static int au_wbr_create_tdp(struct dentry *dentry, + unsigned int flags __maybe_unused) +{ + int err; + aufs_bindex_t btop, bindex; + struct super_block *sb; + struct dentry *parent, *h_parent; + + sb = dentry->d_sb; + btop = au_dbtop(dentry); + err = btop; + if (!au_br_rdonly(au_sbr(sb, btop))) + goto out; + + err = -EROFS; + parent = dget_parent(dentry); + for (bindex = au_dbtop(parent); bindex < btop; bindex++) { + h_parent = au_h_dptr(parent, bindex); + if (!h_parent || d_is_negative(h_parent)) + continue; + + if (!au_br_rdonly(au_sbr(sb, bindex))) { + err = bindex; + break; + } + } + dput(parent); + + /* bottom up here */ + if (unlikely(err < 0)) { + err = au_wbr_bu(sb, btop - 1); + if (err >= 0) + err = au_wbr_nonopq(dentry, err); + } + +out: + AuDbg("b%d\n", err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* an exception for the policy other than tdp */ +static int au_wbr_create_exp(struct dentry *dentry) +{ + int err; + aufs_bindex_t bwh, bdiropq; + struct dentry *parent; + + err = -1; + bwh = au_dbwh(dentry); + parent = dget_parent(dentry); + bdiropq = au_dbdiropq(parent); + if (bwh >= 0) { + if (bdiropq >= 0) + err = min(bdiropq, bwh); + else + err = bwh; + AuDbg("%d\n", err); + } else if (bdiropq >= 0) { + err = bdiropq; + AuDbg("%d\n", err); + } + dput(parent); + + if (err >= 0) + err = au_wbr_nonopq(dentry, err); + + if (err >= 0 && au_br_rdonly(au_sbr(dentry->d_sb, err))) + err = -1; + + AuDbg("%d\n", err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* round robin */ +static int au_wbr_create_init_rr(struct super_block *sb) +{ + int err; + + err = au_wbr_bu(sb, au_sbbot(sb)); + atomic_set(&au_sbi(sb)->si_wbr_rr_next, -err); /* less important */ + /* smp_mb(); */ + + AuDbg("b%d\n", err); + return err; +} + +static int au_wbr_create_rr(struct dentry *dentry, unsigned int flags) +{ + int err, nbr; + unsigned int u; + aufs_bindex_t bindex, bbot; + struct super_block *sb; + atomic_t *next; + + err = au_wbr_create_exp(dentry); + if (err >= 0) + goto out; + + sb = dentry->d_sb; + next = &au_sbi(sb)->si_wbr_rr_next; + bbot = au_sbbot(sb); + nbr = bbot + 1; + for (bindex = 0; bindex <= bbot; bindex++) { + if (!au_ftest_wbr(flags, DIR)) { + err = atomic_dec_return(next) + 1; + /* modulo for 0 is meaningless */ + if (unlikely(!err)) + err = atomic_dec_return(next) + 1; + } else + err = atomic_read(next); + AuDbg("%d\n", err); + u = err; + err = u % nbr; + AuDbg("%d\n", err); + if (!au_br_rdonly(au_sbr(sb, err))) + break; + err = -EROFS; + } + + if (err >= 0) + err = au_wbr_nonopq(dentry, err); + +out: + AuDbg("%d\n", err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* most free space */ +static void au_mfs(struct dentry *dentry, struct dentry *parent) +{ + struct super_block *sb; + struct au_branch *br; + struct au_wbr_mfs *mfs; + struct dentry *h_parent; + aufs_bindex_t bindex, bbot; + int err; + unsigned long long b, bavail; + struct path h_path; + /* reduce the stack usage */ + struct kstatfs *st; + + st = kmalloc(sizeof(*st), GFP_NOFS); + if (unlikely(!st)) { + AuWarn1("failed updating mfs(%d), ignored\n", -ENOMEM); + return; + } + + bavail = 0; + sb = dentry->d_sb; + mfs = &au_sbi(sb)->si_wbr_mfs; + MtxMustLock(&mfs->mfs_lock); + mfs->mfs_bindex = -EROFS; + mfs->mfsrr_bytes = 0; + if (!parent) { + bindex = 0; + bbot = au_sbbot(sb); + } else { + bindex = au_dbtop(parent); + bbot = au_dbtaildir(parent); + } + + for (; bindex <= bbot; bindex++) { + if (parent) { + h_parent = au_h_dptr(parent, bindex); + if (!h_parent || d_is_negative(h_parent)) + continue; + } + br = au_sbr(sb, bindex); + if (au_br_rdonly(br)) + continue; + + /* sb->s_root for NFS is unreliable */ + h_path.mnt = au_br_mnt(br); + h_path.dentry = h_path.mnt->mnt_root; + err = vfs_statfs(&h_path, st); + if (unlikely(err)) { + AuWarn1("failed statfs, b%d, %d\n", bindex, err); + continue; + } + + /* when the available size is equal, select the lower one */ + BUILD_BUG_ON(sizeof(b) < sizeof(st->f_bavail) + || sizeof(b) < sizeof(st->f_bsize)); + b = st->f_bavail * st->f_bsize; + br->br_wbr->wbr_bytes = b; + if (b >= bavail) { + bavail = b; + mfs->mfs_bindex = bindex; + mfs->mfs_jiffy = jiffies; + } + } + + mfs->mfsrr_bytes = bavail; + AuDbg("b%d\n", mfs->mfs_bindex); + kfree(st); +} + +static int au_wbr_create_mfs(struct dentry *dentry, unsigned int flags) +{ + int err; + struct dentry *parent; + struct super_block *sb; + struct au_wbr_mfs *mfs; + + err = au_wbr_create_exp(dentry); + if (err >= 0) + goto out; + + sb = dentry->d_sb; + parent = NULL; + if (au_ftest_wbr(flags, PARENT)) + parent = dget_parent(dentry); + mfs = &au_sbi(sb)->si_wbr_mfs; + mutex_lock(&mfs->mfs_lock); + if (time_after(jiffies, mfs->mfs_jiffy + mfs->mfs_expire) + || mfs->mfs_bindex < 0 + || au_br_rdonly(au_sbr(sb, mfs->mfs_bindex))) + au_mfs(dentry, parent); + mutex_unlock(&mfs->mfs_lock); + err = mfs->mfs_bindex; + dput(parent); + + if (err >= 0) + err = au_wbr_nonopq(dentry, err); + +out: + AuDbg("b%d\n", err); + return err; +} + +static int au_wbr_create_init_mfs(struct super_block *sb) +{ + struct au_wbr_mfs *mfs; + + mfs = &au_sbi(sb)->si_wbr_mfs; + mutex_init(&mfs->mfs_lock); + mfs->mfs_jiffy = 0; + mfs->mfs_bindex = -EROFS; + + return 0; +} + +static int au_wbr_create_fin_mfs(struct super_block *sb __maybe_unused) +{ + mutex_destroy(&au_sbi(sb)->si_wbr_mfs.mfs_lock); + return 0; +} + +/* ---------------------------------------------------------------------- */ + +/* top down regardless parent, and then mfs */ +static int au_wbr_create_tdmfs(struct dentry *dentry, + unsigned int flags __maybe_unused) +{ + int err; + aufs_bindex_t bwh, btail, bindex, bfound, bmfs; + unsigned long long watermark; + struct super_block *sb; + struct au_wbr_mfs *mfs; + struct au_branch *br; + struct dentry *parent; + + sb = dentry->d_sb; + mfs = &au_sbi(sb)->si_wbr_mfs; + mutex_lock(&mfs->mfs_lock); + if (time_after(jiffies, mfs->mfs_jiffy + mfs->mfs_expire) + || mfs->mfs_bindex < 0) + au_mfs(dentry, /*parent*/NULL); + watermark = mfs->mfsrr_watermark; + bmfs = mfs->mfs_bindex; + mutex_unlock(&mfs->mfs_lock); + + /* another style of au_wbr_create_exp() */ + bwh = au_dbwh(dentry); + parent = dget_parent(dentry); + btail = au_dbtaildir(parent); + if (bwh >= 0 && bwh < btail) + btail = bwh; + + err = au_wbr_nonopq(dentry, btail); + if (unlikely(err < 0)) + goto out; + btail = err; + bfound = -1; + for (bindex = 0; bindex <= btail; bindex++) { + br = au_sbr(sb, bindex); + if (au_br_rdonly(br)) + continue; + if (br->br_wbr->wbr_bytes > watermark) { + bfound = bindex; + break; + } + } + err = bfound; + if (err < 0) + err = bmfs; + +out: + dput(parent); + AuDbg("b%d\n", err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* most free space and then round robin */ +static int au_wbr_create_mfsrr(struct dentry *dentry, unsigned int flags) +{ + int err; + struct au_wbr_mfs *mfs; + + err = au_wbr_create_mfs(dentry, flags); + if (err >= 0) { + mfs = &au_sbi(dentry->d_sb)->si_wbr_mfs; + mutex_lock(&mfs->mfs_lock); + if (mfs->mfsrr_bytes < mfs->mfsrr_watermark) + err = au_wbr_create_rr(dentry, flags); + mutex_unlock(&mfs->mfs_lock); + } + + AuDbg("b%d\n", err); + return err; +} + +static int au_wbr_create_init_mfsrr(struct super_block *sb) +{ + int err; + + au_wbr_create_init_mfs(sb); /* ignore */ + err = au_wbr_create_init_rr(sb); + + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* top down parent and most free space */ +static int au_wbr_create_pmfs(struct dentry *dentry, unsigned int flags) +{ + int err, e2; + unsigned long long b; + aufs_bindex_t bindex, btop, bbot; + struct super_block *sb; + struct dentry *parent, *h_parent; + struct au_branch *br; + + err = au_wbr_create_tdp(dentry, flags); + if (unlikely(err < 0)) + goto out; + parent = dget_parent(dentry); + btop = au_dbtop(parent); + bbot = au_dbtaildir(parent); + if (btop == bbot) + goto out_parent; /* success */ + + e2 = au_wbr_create_mfs(dentry, flags); + if (e2 < 0) + goto out_parent; /* success */ + + /* when the available size is equal, select upper one */ + sb = dentry->d_sb; + br = au_sbr(sb, err); + b = br->br_wbr->wbr_bytes; + AuDbg("b%d, %llu\n", err, b); + + for (bindex = btop; bindex <= bbot; bindex++) { + h_parent = au_h_dptr(parent, bindex); + if (!h_parent || d_is_negative(h_parent)) + continue; + + br = au_sbr(sb, bindex); + if (!au_br_rdonly(br) && br->br_wbr->wbr_bytes > b) { + b = br->br_wbr->wbr_bytes; + err = bindex; + AuDbg("b%d, %llu\n", err, b); + } + } + + if (err >= 0) + err = au_wbr_nonopq(dentry, err); + +out_parent: + dput(parent); +out: + AuDbg("b%d\n", err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* + * - top down parent + * - most free space with parent + * - most free space round-robin regardless parent + */ +static int au_wbr_create_pmfsrr(struct dentry *dentry, unsigned int flags) +{ + int err; + unsigned long long watermark; + struct super_block *sb; + struct au_branch *br; + struct au_wbr_mfs *mfs; + + err = au_wbr_create_pmfs(dentry, flags | AuWbr_PARENT); + if (unlikely(err < 0)) + goto out; + + sb = dentry->d_sb; + br = au_sbr(sb, err); + mfs = &au_sbi(sb)->si_wbr_mfs; + mutex_lock(&mfs->mfs_lock); + watermark = mfs->mfsrr_watermark; + mutex_unlock(&mfs->mfs_lock); + if (br->br_wbr->wbr_bytes < watermark) + /* regardless the parent dir */ + err = au_wbr_create_mfsrr(dentry, flags); + +out: + AuDbg("b%d\n", err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* policies for copyup */ + +/* top down parent */ +static int au_wbr_copyup_tdp(struct dentry *dentry) +{ + return au_wbr_create_tdp(dentry, /*flags, anything is ok*/0); +} + +/* bottom up parent */ +static int au_wbr_copyup_bup(struct dentry *dentry) +{ + int err; + aufs_bindex_t bindex, btop; + struct dentry *parent, *h_parent; + struct super_block *sb; + + err = -EROFS; + sb = dentry->d_sb; + parent = dget_parent(dentry); + btop = au_dbtop(parent); + for (bindex = au_dbtop(dentry); bindex >= btop; bindex--) { + h_parent = au_h_dptr(parent, bindex); + if (!h_parent || d_is_negative(h_parent)) + continue; + + if (!au_br_rdonly(au_sbr(sb, bindex))) { + err = bindex; + break; + } + } + dput(parent); + + /* bottom up here */ + if (unlikely(err < 0)) + err = au_wbr_bu(sb, btop - 1); + + AuDbg("b%d\n", err); + return err; +} + +/* bottom up */ +int au_wbr_do_copyup_bu(struct dentry *dentry, aufs_bindex_t btop) +{ + int err; + + err = au_wbr_bu(dentry->d_sb, btop); + AuDbg("b%d\n", err); + if (err > btop) + err = au_wbr_nonopq(dentry, err); + + AuDbg("b%d\n", err); + return err; +} + +static int au_wbr_copyup_bu(struct dentry *dentry) +{ + int err; + aufs_bindex_t btop; + + btop = au_dbtop(dentry); + err = au_wbr_do_copyup_bu(dentry, btop); + return err; +} + +/* ---------------------------------------------------------------------- */ + +struct au_wbr_copyup_operations au_wbr_copyup_ops[] = { + [AuWbrCopyup_TDP] = { + .copyup = au_wbr_copyup_tdp + }, + [AuWbrCopyup_BUP] = { + .copyup = au_wbr_copyup_bup + }, + [AuWbrCopyup_BU] = { + .copyup = au_wbr_copyup_bu + } +}; + +struct au_wbr_create_operations au_wbr_create_ops[] = { + [AuWbrCreate_TDP] = { + .create = au_wbr_create_tdp + }, + [AuWbrCreate_RR] = { + .create = au_wbr_create_rr, + .init = au_wbr_create_init_rr + }, + [AuWbrCreate_MFS] = { + .create = au_wbr_create_mfs, + .init = au_wbr_create_init_mfs, + .fin = au_wbr_create_fin_mfs + }, + [AuWbrCreate_MFSV] = { + .create = au_wbr_create_mfs, + .init = au_wbr_create_init_mfs, + .fin = au_wbr_create_fin_mfs + }, + [AuWbrCreate_MFSRR] = { + .create = au_wbr_create_mfsrr, + .init = au_wbr_create_init_mfsrr, + .fin = au_wbr_create_fin_mfs + }, + [AuWbrCreate_MFSRRV] = { + .create = au_wbr_create_mfsrr, + .init = au_wbr_create_init_mfsrr, + .fin = au_wbr_create_fin_mfs + }, + [AuWbrCreate_TDMFS] = { + .create = au_wbr_create_tdmfs, + .init = au_wbr_create_init_mfs, + .fin = au_wbr_create_fin_mfs + }, + [AuWbrCreate_TDMFSV] = { + .create = au_wbr_create_tdmfs, + .init = au_wbr_create_init_mfs, + .fin = au_wbr_create_fin_mfs + }, + [AuWbrCreate_PMFS] = { + .create = au_wbr_create_pmfs, + .init = au_wbr_create_init_mfs, + .fin = au_wbr_create_fin_mfs + }, + [AuWbrCreate_PMFSV] = { + .create = au_wbr_create_pmfs, + .init = au_wbr_create_init_mfs, + .fin = au_wbr_create_fin_mfs + }, + [AuWbrCreate_PMFSRR] = { + .create = au_wbr_create_pmfsrr, + .init = au_wbr_create_init_mfsrr, + .fin = au_wbr_create_fin_mfs + }, + [AuWbrCreate_PMFSRRV] = { + .create = au_wbr_create_pmfsrr, + .init = au_wbr_create_init_mfsrr, + .fin = au_wbr_create_fin_mfs + } +}; diff --git a/include/fs/aufs/whout.c b/include/fs/aufs/whout.c new file mode 100644 index 00000000000..c5cf34e2b56 --- /dev/null +++ b/include/fs/aufs/whout.c @@ -0,0 +1,1061 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * whiteout for logical deletion and opaque directory + */ + +#include "aufs.h" + +#define WH_MASK S_IRUGO + +/* + * If a directory contains this file, then it is opaque. We start with the + * .wh. flag so that it is blocked by lookup. + */ +static struct qstr diropq_name = QSTR_INIT(AUFS_WH_DIROPQ, + sizeof(AUFS_WH_DIROPQ) - 1); + +/* + * generate whiteout name, which is NOT terminated by NULL. + * @name: original d_name.name + * @len: original d_name.len + * @wh: whiteout qstr + * returns zero when succeeds, otherwise error. + * succeeded value as wh->name should be freed by kfree(). + */ +int au_wh_name_alloc(struct qstr *wh, const struct qstr *name) +{ + char *p; + + if (unlikely(name->len > PATH_MAX - AUFS_WH_PFX_LEN)) + return -ENAMETOOLONG; + + wh->len = name->len + AUFS_WH_PFX_LEN; + p = kmalloc(wh->len, GFP_NOFS); + wh->name = p; + if (p) { + memcpy(p, AUFS_WH_PFX, AUFS_WH_PFX_LEN); + memcpy(p + AUFS_WH_PFX_LEN, name->name, name->len); + /* smp_mb(); */ + return 0; + } + return -ENOMEM; +} + +/* ---------------------------------------------------------------------- */ + +/* + * test if the @wh_name exists under @h_parent. + * @try_sio specifies the necessary of super-io. + */ +int au_wh_test(struct dentry *h_parent, struct qstr *wh_name, int try_sio) +{ + int err; + struct dentry *wh_dentry; + + if (!try_sio) + wh_dentry = vfsub_lkup_one(wh_name, h_parent); + else + wh_dentry = au_sio_lkup_one(wh_name, h_parent); + err = PTR_ERR(wh_dentry); + if (IS_ERR(wh_dentry)) { + if (err == -ENAMETOOLONG) + err = 0; + goto out; + } + + err = 0; + if (d_is_negative(wh_dentry)) + goto out_wh; /* success */ + + err = 1; + if (d_is_reg(wh_dentry)) + goto out_wh; /* success */ + + err = -EIO; + AuIOErr("%pd Invalid whiteout entry type 0%o.\n", + wh_dentry, d_inode(wh_dentry)->i_mode); + +out_wh: + dput(wh_dentry); +out: + return err; +} + +/* + * test if the @h_dentry sets opaque or not. + */ +int au_diropq_test(struct dentry *h_dentry) +{ + int err; + struct inode *h_dir; + + h_dir = d_inode(h_dentry); + err = au_wh_test(h_dentry, &diropq_name, + au_test_h_perm_sio(h_dir, MAY_EXEC)); + return err; +} + +/* + * returns a negative dentry whose name is unique and temporary. + */ +struct dentry *au_whtmp_lkup(struct dentry *h_parent, struct au_branch *br, + struct qstr *prefix) +{ + struct dentry *dentry; + int i; + char defname[NAME_MAX - AUFS_MAX_NAMELEN + DNAME_INLINE_LEN + 1], + *name, *p; + /* strict atomic_t is unnecessary here */ + static unsigned short cnt; + struct qstr qs; + + BUILD_BUG_ON(sizeof(cnt) * 2 > AUFS_WH_TMP_LEN); + + name = defname; + qs.len = sizeof(defname) - DNAME_INLINE_LEN + prefix->len - 1; + if (unlikely(prefix->len > DNAME_INLINE_LEN)) { + dentry = ERR_PTR(-ENAMETOOLONG); + if (unlikely(qs.len > NAME_MAX)) + goto out; + dentry = ERR_PTR(-ENOMEM); + name = kmalloc(qs.len + 1, GFP_NOFS); + if (unlikely(!name)) + goto out; + } + + /* doubly whiteout-ed */ + memcpy(name, AUFS_WH_PFX AUFS_WH_PFX, AUFS_WH_PFX_LEN * 2); + p = name + AUFS_WH_PFX_LEN * 2; + memcpy(p, prefix->name, prefix->len); + p += prefix->len; + *p++ = '.'; + AuDebugOn(name + qs.len + 1 - p <= AUFS_WH_TMP_LEN); + + qs.name = name; + for (i = 0; i < 3; i++) { + sprintf(p, "%.*x", AUFS_WH_TMP_LEN, cnt++); + dentry = au_sio_lkup_one(&qs, h_parent); + if (IS_ERR(dentry) || d_is_negative(dentry)) + goto out_name; + dput(dentry); + } + /* pr_warn("could not get random name\n"); */ + dentry = ERR_PTR(-EEXIST); + AuDbg("%.*s\n", AuLNPair(&qs)); + BUG(); + +out_name: + if (name != defname) + kfree(name); +out: + AuTraceErrPtr(dentry); + return dentry; +} + +/* + * rename the @h_dentry on @br to the whiteouted temporary name. + */ +int au_whtmp_ren(struct dentry *h_dentry, struct au_branch *br) +{ + int err; + struct path h_path = { + .mnt = au_br_mnt(br) + }; + struct inode *h_dir, *delegated; + struct dentry *h_parent; + + h_parent = h_dentry->d_parent; /* dir inode is locked */ + h_dir = d_inode(h_parent); + IMustLock(h_dir); + + h_path.dentry = au_whtmp_lkup(h_parent, br, &h_dentry->d_name); + err = PTR_ERR(h_path.dentry); + if (IS_ERR(h_path.dentry)) + goto out; + + /* under the same dir, no need to lock_rename() */ + delegated = NULL; + err = vfsub_rename(h_dir, h_dentry, h_dir, &h_path, &delegated, + /*flags*/0); + AuTraceErr(err); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal rename\n"); + iput(delegated); + } + dput(h_path.dentry); + +out: + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ +/* + * functions for removing a whiteout + */ + +static int do_unlink_wh(struct inode *h_dir, struct path *h_path) +{ + int err, force; + struct inode *delegated; + + /* + * forces superio when the dir has a sticky bit. + * this may be a violation of unix fs semantics. + */ + force = (h_dir->i_mode & S_ISVTX) + && !uid_eq(current_fsuid(), d_inode(h_path->dentry)->i_uid); + delegated = NULL; + err = vfsub_unlink(h_dir, h_path, &delegated, force); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal unlink\n"); + iput(delegated); + } + return err; +} + +int au_wh_unlink_dentry(struct inode *h_dir, struct path *h_path, + struct dentry *dentry) +{ + int err; + + err = do_unlink_wh(h_dir, h_path); + if (!err && dentry) + au_set_dbwh(dentry, -1); + + return err; +} + +static int unlink_wh_name(struct dentry *h_parent, struct qstr *wh, + struct au_branch *br) +{ + int err; + struct path h_path = { + .mnt = au_br_mnt(br) + }; + + err = 0; + h_path.dentry = vfsub_lkup_one(wh, h_parent); + if (IS_ERR(h_path.dentry)) + err = PTR_ERR(h_path.dentry); + else { + if (d_is_reg(h_path.dentry)) + err = do_unlink_wh(d_inode(h_parent), &h_path); + dput(h_path.dentry); + } + + return err; +} + +/* ---------------------------------------------------------------------- */ +/* + * initialize/clean whiteout for a branch + */ + +static void au_wh_clean(struct inode *h_dir, struct path *whpath, + const int isdir) +{ + int err; + struct inode *delegated; + + if (d_is_negative(whpath->dentry)) + return; + + if (isdir) + err = vfsub_rmdir(h_dir, whpath); + else { + delegated = NULL; + err = vfsub_unlink(h_dir, whpath, &delegated, /*force*/0); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal unlink\n"); + iput(delegated); + } + } + if (unlikely(err)) + pr_warn("failed removing %pd (%d), ignored.\n", + whpath->dentry, err); +} + +static int test_linkable(struct dentry *h_root) +{ + struct inode *h_dir = d_inode(h_root); + + if (h_dir->i_op->link) + return 0; + + pr_err("%pd (%s) doesn't support link(2), use noplink and rw+nolwh\n", + h_root, au_sbtype(h_root->d_sb)); + return -ENOSYS; +} + +/* todo: should this mkdir be done in /sbin/mount.aufs helper? */ +static int au_whdir(struct inode *h_dir, struct path *path) +{ + int err; + + err = -EEXIST; + if (d_is_negative(path->dentry)) { + int mode = S_IRWXU; + + if (au_test_nfs(path->dentry->d_sb)) + mode |= S_IXUGO; + err = vfsub_mkdir(h_dir, path, mode); + } else if (d_is_dir(path->dentry)) + err = 0; + else + pr_err("unknown %pd exists\n", path->dentry); + + return err; +} + +struct au_wh_base { + const struct qstr *name; + struct dentry *dentry; +}; + +static void au_wh_init_ro(struct inode *h_dir, struct au_wh_base base[], + struct path *h_path) +{ + h_path->dentry = base[AuBrWh_BASE].dentry; + au_wh_clean(h_dir, h_path, /*isdir*/0); + h_path->dentry = base[AuBrWh_PLINK].dentry; + au_wh_clean(h_dir, h_path, /*isdir*/1); + h_path->dentry = base[AuBrWh_ORPH].dentry; + au_wh_clean(h_dir, h_path, /*isdir*/1); +} + +/* + * returns tri-state, + * minus: error, caller should print the message + * zero: succuess + * plus: error, caller should NOT print the message + */ +static int au_wh_init_rw_nolink(struct dentry *h_root, struct au_wbr *wbr, + int do_plink, struct au_wh_base base[], + struct path *h_path) +{ + int err; + struct inode *h_dir; + + h_dir = d_inode(h_root); + h_path->dentry = base[AuBrWh_BASE].dentry; + au_wh_clean(h_dir, h_path, /*isdir*/0); + h_path->dentry = base[AuBrWh_PLINK].dentry; + if (do_plink) { + err = test_linkable(h_root); + if (unlikely(err)) { + err = 1; + goto out; + } + + err = au_whdir(h_dir, h_path); + if (unlikely(err)) + goto out; + wbr->wbr_plink = dget(base[AuBrWh_PLINK].dentry); + } else + au_wh_clean(h_dir, h_path, /*isdir*/1); + h_path->dentry = base[AuBrWh_ORPH].dentry; + err = au_whdir(h_dir, h_path); + if (unlikely(err)) + goto out; + wbr->wbr_orph = dget(base[AuBrWh_ORPH].dentry); + +out: + return err; +} + +/* + * for the moment, aufs supports the branch filesystem which does not support + * link(2). testing on FAT which does not support i_op->setattr() fully either, + * copyup failed. finally, such filesystem will not be used as the writable + * branch. + * + * returns tri-state, see above. + */ +static int au_wh_init_rw(struct dentry *h_root, struct au_wbr *wbr, + int do_plink, struct au_wh_base base[], + struct path *h_path) +{ + int err; + struct inode *h_dir; + + WbrWhMustWriteLock(wbr); + + err = test_linkable(h_root); + if (unlikely(err)) { + err = 1; + goto out; + } + + /* + * todo: should this create be done in /sbin/mount.aufs helper? + */ + err = -EEXIST; + h_dir = d_inode(h_root); + if (d_is_negative(base[AuBrWh_BASE].dentry)) { + h_path->dentry = base[AuBrWh_BASE].dentry; + err = vfsub_create(h_dir, h_path, WH_MASK, /*want_excl*/true); + } else if (d_is_reg(base[AuBrWh_BASE].dentry)) + err = 0; + else + pr_err("unknown %pd2 exists\n", base[AuBrWh_BASE].dentry); + if (unlikely(err)) + goto out; + + h_path->dentry = base[AuBrWh_PLINK].dentry; + if (do_plink) { + err = au_whdir(h_dir, h_path); + if (unlikely(err)) + goto out; + wbr->wbr_plink = dget(base[AuBrWh_PLINK].dentry); + } else + au_wh_clean(h_dir, h_path, /*isdir*/1); + wbr->wbr_whbase = dget(base[AuBrWh_BASE].dentry); + + h_path->dentry = base[AuBrWh_ORPH].dentry; + err = au_whdir(h_dir, h_path); + if (unlikely(err)) + goto out; + wbr->wbr_orph = dget(base[AuBrWh_ORPH].dentry); + +out: + return err; +} + +/* + * initialize the whiteout base file/dir for @br. + */ +int au_wh_init(struct au_branch *br, struct super_block *sb) +{ + int err, i; + const unsigned char do_plink + = !!au_opt_test(au_mntflags(sb), PLINK); + struct inode *h_dir; + struct path path = br->br_path; + struct dentry *h_root = path.dentry; + struct au_wbr *wbr = br->br_wbr; + static const struct qstr base_name[] = { + [AuBrWh_BASE] = QSTR_INIT(AUFS_BASE_NAME, + sizeof(AUFS_BASE_NAME) - 1), + [AuBrWh_PLINK] = QSTR_INIT(AUFS_PLINKDIR_NAME, + sizeof(AUFS_PLINKDIR_NAME) - 1), + [AuBrWh_ORPH] = QSTR_INIT(AUFS_ORPHDIR_NAME, + sizeof(AUFS_ORPHDIR_NAME) - 1) + }; + struct au_wh_base base[] = { + [AuBrWh_BASE] = { + .name = base_name + AuBrWh_BASE, + .dentry = NULL + }, + [AuBrWh_PLINK] = { + .name = base_name + AuBrWh_PLINK, + .dentry = NULL + }, + [AuBrWh_ORPH] = { + .name = base_name + AuBrWh_ORPH, + .dentry = NULL + } + }; + + if (wbr) + WbrWhMustWriteLock(wbr); + + for (i = 0; i < AuBrWh_Last; i++) { + /* doubly whiteouted */ + struct dentry *d; + + d = au_wh_lkup(h_root, (void *)base[i].name, br); + err = PTR_ERR(d); + if (IS_ERR(d)) + goto out; + + base[i].dentry = d; + AuDebugOn(wbr + && wbr->wbr_wh[i] + && wbr->wbr_wh[i] != base[i].dentry); + } + + if (wbr) + for (i = 0; i < AuBrWh_Last; i++) { + dput(wbr->wbr_wh[i]); + wbr->wbr_wh[i] = NULL; + } + + err = 0; + if (!au_br_writable(br->br_perm)) { + h_dir = d_inode(h_root); + au_wh_init_ro(h_dir, base, &path); + } else if (!au_br_wh_linkable(br->br_perm)) { + err = au_wh_init_rw_nolink(h_root, wbr, do_plink, base, &path); + if (err > 0) + goto out; + else if (err) + goto out_err; + } else { + err = au_wh_init_rw(h_root, wbr, do_plink, base, &path); + if (err > 0) + goto out; + else if (err) + goto out_err; + } + goto out; /* success */ + +out_err: + pr_err("an error(%d) on the writable branch %pd(%s)\n", + err, h_root, au_sbtype(h_root->d_sb)); +out: + for (i = 0; i < AuBrWh_Last; i++) + dput(base[i].dentry); + return err; +} + +/* ---------------------------------------------------------------------- */ +/* + * whiteouts are all hard-linked usually. + * when its link count reaches a ceiling, we create a new whiteout base + * asynchronously. + */ + +struct reinit_br_wh { + struct super_block *sb; + struct au_branch *br; +}; + +static void reinit_br_wh(void *arg) +{ + int err; + aufs_bindex_t bindex; + struct path h_path; + struct reinit_br_wh *a = arg; + struct au_wbr *wbr; + struct inode *dir, *delegated; + struct dentry *h_root; + struct au_hinode *hdir; + + err = 0; + wbr = a->br->br_wbr; + /* big aufs lock */ + si_noflush_write_lock(a->sb); + if (!au_br_writable(a->br->br_perm)) + goto out; + bindex = au_br_index(a->sb, a->br->br_id); + if (unlikely(bindex < 0)) + goto out; + + di_read_lock_parent(a->sb->s_root, AuLock_IR); + dir = d_inode(a->sb->s_root); + hdir = au_hi(dir, bindex); + h_root = au_h_dptr(a->sb->s_root, bindex); + AuDebugOn(h_root != au_br_dentry(a->br)); + + au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT); + wbr_wh_write_lock(wbr); + err = au_h_verify(wbr->wbr_whbase, au_opt_udba(a->sb), hdir->hi_inode, + h_root, a->br); + if (!err) { + h_path.dentry = wbr->wbr_whbase; + h_path.mnt = au_br_mnt(a->br); + delegated = NULL; + err = vfsub_unlink(hdir->hi_inode, &h_path, &delegated, + /*force*/0); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal unlink\n"); + iput(delegated); + } + } else { + pr_warn("%pd is moved, ignored\n", wbr->wbr_whbase); + err = 0; + } + dput(wbr->wbr_whbase); + wbr->wbr_whbase = NULL; + if (!err) + err = au_wh_init(a->br, a->sb); + wbr_wh_write_unlock(wbr); + au_hn_inode_unlock(hdir); + di_read_unlock(a->sb->s_root, AuLock_IR); + if (!err) + au_fhsm_wrote(a->sb, bindex, /*force*/0); + +out: + if (wbr) + atomic_dec(&wbr->wbr_wh_running); + au_br_put(a->br); + si_write_unlock(a->sb); + au_nwt_done(&au_sbi(a->sb)->si_nowait); + kfree(arg); + if (unlikely(err)) + AuIOErr("err %d\n", err); +} + +static void kick_reinit_br_wh(struct super_block *sb, struct au_branch *br) +{ + int do_dec, wkq_err; + struct reinit_br_wh *arg; + + do_dec = 1; + if (atomic_inc_return(&br->br_wbr->wbr_wh_running) != 1) + goto out; + + /* ignore ENOMEM */ + arg = kmalloc(sizeof(*arg), GFP_NOFS); + if (arg) { + /* + * dec(wh_running), kfree(arg) and dec(br_count) + * in reinit function + */ + arg->sb = sb; + arg->br = br; + au_br_get(br); + wkq_err = au_wkq_nowait(reinit_br_wh, arg, sb, /*flags*/0); + if (unlikely(wkq_err)) { + atomic_dec(&br->br_wbr->wbr_wh_running); + au_br_put(br); + kfree(arg); + } + do_dec = 0; + } + +out: + if (do_dec) + atomic_dec(&br->br_wbr->wbr_wh_running); +} + +/* ---------------------------------------------------------------------- */ + +/* + * create the whiteout @wh. + */ +static int link_or_create_wh(struct super_block *sb, aufs_bindex_t bindex, + struct dentry *wh) +{ + int err; + struct path h_path = { + .dentry = wh + }; + struct au_branch *br; + struct au_wbr *wbr; + struct dentry *h_parent; + struct inode *h_dir, *delegated; + + h_parent = wh->d_parent; /* dir inode is locked */ + h_dir = d_inode(h_parent); + IMustLock(h_dir); + + br = au_sbr(sb, bindex); + h_path.mnt = au_br_mnt(br); + wbr = br->br_wbr; + wbr_wh_read_lock(wbr); + if (wbr->wbr_whbase) { + delegated = NULL; + err = vfsub_link(wbr->wbr_whbase, h_dir, &h_path, &delegated); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal link\n"); + iput(delegated); + } + if (!err || err != -EMLINK) + goto out; + + /* link count full. re-initialize br_whbase. */ + kick_reinit_br_wh(sb, br); + } + + /* return this error in this context */ + err = vfsub_create(h_dir, &h_path, WH_MASK, /*want_excl*/true); + if (!err) + au_fhsm_wrote(sb, bindex, /*force*/0); + +out: + wbr_wh_read_unlock(wbr); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* + * create or remove the diropq. + */ +static struct dentry *do_diropq(struct dentry *dentry, aufs_bindex_t bindex, + unsigned int flags) +{ + struct dentry *opq_dentry, *h_dentry; + struct super_block *sb; + struct au_branch *br; + int err; + + sb = dentry->d_sb; + br = au_sbr(sb, bindex); + h_dentry = au_h_dptr(dentry, bindex); + opq_dentry = vfsub_lkup_one(&diropq_name, h_dentry); + if (IS_ERR(opq_dentry)) + goto out; + + if (au_ftest_diropq(flags, CREATE)) { + err = link_or_create_wh(sb, bindex, opq_dentry); + if (!err) { + au_set_dbdiropq(dentry, bindex); + goto out; /* success */ + } + } else { + struct path tmp = { + .dentry = opq_dentry, + .mnt = au_br_mnt(br) + }; + err = do_unlink_wh(au_h_iptr(d_inode(dentry), bindex), &tmp); + if (!err) + au_set_dbdiropq(dentry, -1); + } + dput(opq_dentry); + opq_dentry = ERR_PTR(err); + +out: + return opq_dentry; +} + +struct do_diropq_args { + struct dentry **errp; + struct dentry *dentry; + aufs_bindex_t bindex; + unsigned int flags; +}; + +static void call_do_diropq(void *args) +{ + struct do_diropq_args *a = args; + *a->errp = do_diropq(a->dentry, a->bindex, a->flags); +} + +struct dentry *au_diropq_sio(struct dentry *dentry, aufs_bindex_t bindex, + unsigned int flags) +{ + struct dentry *diropq, *h_dentry; + + h_dentry = au_h_dptr(dentry, bindex); + if (!au_test_h_perm_sio(d_inode(h_dentry), MAY_EXEC | MAY_WRITE)) + diropq = do_diropq(dentry, bindex, flags); + else { + int wkq_err; + struct do_diropq_args args = { + .errp = &diropq, + .dentry = dentry, + .bindex = bindex, + .flags = flags + }; + + wkq_err = au_wkq_wait(call_do_diropq, &args); + if (unlikely(wkq_err)) + diropq = ERR_PTR(wkq_err); + } + + return diropq; +} + +/* ---------------------------------------------------------------------- */ + +/* + * lookup whiteout dentry. + * @h_parent: lower parent dentry which must exist and be locked + * @base_name: name of dentry which will be whiteouted + * returns dentry for whiteout. + */ +struct dentry *au_wh_lkup(struct dentry *h_parent, struct qstr *base_name, + struct au_branch *br) +{ + int err; + struct qstr wh_name; + struct dentry *wh_dentry; + + err = au_wh_name_alloc(&wh_name, base_name); + wh_dentry = ERR_PTR(err); + if (!err) { + wh_dentry = vfsub_lkup_one(&wh_name, h_parent); + kfree(wh_name.name); + } + return wh_dentry; +} + +/* + * link/create a whiteout for @dentry on @bindex. + */ +struct dentry *au_wh_create(struct dentry *dentry, aufs_bindex_t bindex, + struct dentry *h_parent) +{ + struct dentry *wh_dentry; + struct super_block *sb; + int err; + + sb = dentry->d_sb; + wh_dentry = au_wh_lkup(h_parent, &dentry->d_name, au_sbr(sb, bindex)); + if (!IS_ERR(wh_dentry) && d_is_negative(wh_dentry)) { + err = link_or_create_wh(sb, bindex, wh_dentry); + if (!err) { + au_set_dbwh(dentry, bindex); + au_fhsm_wrote(sb, bindex, /*force*/0); + } else { + dput(wh_dentry); + wh_dentry = ERR_PTR(err); + } + } + + return wh_dentry; +} + +/* ---------------------------------------------------------------------- */ + +/* Delete all whiteouts in this directory on branch bindex. */ +static int del_wh_children(struct dentry *h_dentry, struct au_nhash *whlist, + aufs_bindex_t bindex, struct au_branch *br) +{ + int err; + unsigned long ul, n; + struct qstr wh_name; + char *p; + struct hlist_head *head; + struct au_vdir_wh *pos; + struct au_vdir_destr *str; + + err = -ENOMEM; + p = (void *)__get_free_page(GFP_NOFS); + wh_name.name = p; + if (unlikely(!wh_name.name)) + goto out; + + err = 0; + memcpy(p, AUFS_WH_PFX, AUFS_WH_PFX_LEN); + p += AUFS_WH_PFX_LEN; + n = whlist->nh_num; + head = whlist->nh_head; + for (ul = 0; !err && ul < n; ul++, head++) { + hlist_for_each_entry(pos, head, wh_hash) { + if (pos->wh_bindex != bindex) + continue; + + str = &pos->wh_str; + if (str->len + AUFS_WH_PFX_LEN <= PATH_MAX) { + memcpy(p, str->name, str->len); + wh_name.len = AUFS_WH_PFX_LEN + str->len; + err = unlink_wh_name(h_dentry, &wh_name, br); + if (!err) + continue; + break; + } + AuIOErr("whiteout name too long %.*s\n", + str->len, str->name); + err = -EIO; + break; + } + } + free_page((unsigned long)wh_name.name); + +out: + return err; +} + +struct del_wh_children_args { + int *errp; + struct dentry *h_dentry; + struct au_nhash *whlist; + aufs_bindex_t bindex; + struct au_branch *br; +}; + +static void call_del_wh_children(void *args) +{ + struct del_wh_children_args *a = args; + *a->errp = del_wh_children(a->h_dentry, a->whlist, a->bindex, a->br); +} + +/* ---------------------------------------------------------------------- */ + +struct au_whtmp_rmdir *au_whtmp_rmdir_alloc(struct super_block *sb, gfp_t gfp) +{ + struct au_whtmp_rmdir *whtmp; + int err; + unsigned int rdhash; + + SiMustAnyLock(sb); + + whtmp = kzalloc(sizeof(*whtmp), gfp); + if (unlikely(!whtmp)) { + whtmp = ERR_PTR(-ENOMEM); + goto out; + } + + /* no estimation for dir size */ + rdhash = au_sbi(sb)->si_rdhash; + if (!rdhash) + rdhash = AUFS_RDHASH_DEF; + err = au_nhash_alloc(&whtmp->whlist, rdhash, gfp); + if (unlikely(err)) { + kfree(whtmp); + whtmp = ERR_PTR(err); + } + +out: + return whtmp; +} + +void au_whtmp_rmdir_free(struct au_whtmp_rmdir *whtmp) +{ + if (whtmp->br) + au_br_put(whtmp->br); + dput(whtmp->wh_dentry); + iput(whtmp->dir); + au_nhash_wh_free(&whtmp->whlist); + kfree(whtmp); +} + +/* + * rmdir the whiteouted temporary named dir @h_dentry. + * @whlist: whiteouted children. + */ +int au_whtmp_rmdir(struct inode *dir, aufs_bindex_t bindex, + struct dentry *wh_dentry, struct au_nhash *whlist) +{ + int err; + unsigned int h_nlink; + struct path h_tmp; + struct inode *wh_inode, *h_dir; + struct au_branch *br; + + h_dir = d_inode(wh_dentry->d_parent); /* dir inode is locked */ + IMustLock(h_dir); + + br = au_sbr(dir->i_sb, bindex); + wh_inode = d_inode(wh_dentry); + inode_lock_nested(wh_inode, AuLsc_I_CHILD); + + /* + * someone else might change some whiteouts while we were sleeping. + * it means this whlist may have an obsoleted entry. + */ + if (!au_test_h_perm_sio(wh_inode, MAY_EXEC | MAY_WRITE)) + err = del_wh_children(wh_dentry, whlist, bindex, br); + else { + int wkq_err; + struct del_wh_children_args args = { + .errp = &err, + .h_dentry = wh_dentry, + .whlist = whlist, + .bindex = bindex, + .br = br + }; + + wkq_err = au_wkq_wait(call_del_wh_children, &args); + if (unlikely(wkq_err)) + err = wkq_err; + } + inode_unlock(wh_inode); + + if (!err) { + h_tmp.dentry = wh_dentry; + h_tmp.mnt = au_br_mnt(br); + h_nlink = h_dir->i_nlink; + err = vfsub_rmdir(h_dir, &h_tmp); + /* some fs doesn't change the parent nlink in some cases */ + h_nlink -= h_dir->i_nlink; + } + + if (!err) { + if (au_ibtop(dir) == bindex) { + /* todo: dir->i_mutex is necessary */ + au_cpup_attr_timesizes(dir); + if (h_nlink) + vfsub_drop_nlink(dir); + } + return 0; /* success */ + } + + pr_warn("failed removing %pd(%d), ignored\n", wh_dentry, err); + return err; +} + +static void call_rmdir_whtmp(void *args) +{ + int err; + aufs_bindex_t bindex; + struct au_whtmp_rmdir *a = args; + struct super_block *sb; + struct dentry *h_parent; + struct inode *h_dir; + struct au_hinode *hdir; + + /* rmdir by nfsd may cause deadlock with this i_mutex */ + /* inode_lock(a->dir); */ + err = -EROFS; + sb = a->dir->i_sb; + si_read_lock(sb, !AuLock_FLUSH); + if (!au_br_writable(a->br->br_perm)) + goto out; + bindex = au_br_index(sb, a->br->br_id); + if (unlikely(bindex < 0)) + goto out; + + err = -EIO; + ii_write_lock_parent(a->dir); + h_parent = dget_parent(a->wh_dentry); + h_dir = d_inode(h_parent); + hdir = au_hi(a->dir, bindex); + err = vfsub_mnt_want_write(au_br_mnt(a->br)); + if (unlikely(err)) + goto out_mnt; + au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT); + err = au_h_verify(a->wh_dentry, au_opt_udba(sb), h_dir, h_parent, + a->br); + if (!err) + err = au_whtmp_rmdir(a->dir, bindex, a->wh_dentry, &a->whlist); + au_hn_inode_unlock(hdir); + vfsub_mnt_drop_write(au_br_mnt(a->br)); + +out_mnt: + dput(h_parent); + ii_write_unlock(a->dir); +out: + /* inode_unlock(a->dir); */ + au_whtmp_rmdir_free(a); + si_read_unlock(sb); + au_nwt_done(&au_sbi(sb)->si_nowait); + if (unlikely(err)) + AuIOErr("err %d\n", err); +} + +void au_whtmp_kick_rmdir(struct inode *dir, aufs_bindex_t bindex, + struct dentry *wh_dentry, struct au_whtmp_rmdir *args) +{ + int wkq_err; + struct super_block *sb; + + IMustLock(dir); + + /* all post-process will be done in do_rmdir_whtmp(). */ + sb = dir->i_sb; + args->dir = au_igrab(dir); + args->br = au_sbr(sb, bindex); + au_br_get(args->br); + args->wh_dentry = dget(wh_dentry); + wkq_err = au_wkq_nowait(call_rmdir_whtmp, args, sb, /*flags*/0); + if (unlikely(wkq_err)) { + pr_warn("rmdir error %pd (%d), ignored\n", wh_dentry, wkq_err); + au_whtmp_rmdir_free(args); + } +} diff --git a/include/fs/aufs/whout.h b/include/fs/aufs/whout.h new file mode 100644 index 00000000000..766a1d9301a --- /dev/null +++ b/include/fs/aufs/whout.h @@ -0,0 +1,85 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * whiteout for logical deletion and opaque directory + */ + +#ifndef __AUFS_WHOUT_H__ +#define __AUFS_WHOUT_H__ + +#ifdef __KERNEL__ + +#include "dir.h" + +/* whout.c */ +int au_wh_name_alloc(struct qstr *wh, const struct qstr *name); +int au_wh_test(struct dentry *h_parent, struct qstr *wh_name, int try_sio); +int au_diropq_test(struct dentry *h_dentry); +struct au_branch; +struct dentry *au_whtmp_lkup(struct dentry *h_parent, struct au_branch *br, + struct qstr *prefix); +int au_whtmp_ren(struct dentry *h_dentry, struct au_branch *br); +int au_wh_unlink_dentry(struct inode *h_dir, struct path *h_path, + struct dentry *dentry); +int au_wh_init(struct au_branch *br, struct super_block *sb); + +/* diropq flags */ +#define AuDiropq_CREATE 1 +#define au_ftest_diropq(flags, name) ((flags) & AuDiropq_##name) +#define au_fset_diropq(flags, name) \ + do { (flags) |= AuDiropq_##name; } while (0) +#define au_fclr_diropq(flags, name) \ + do { (flags) &= ~AuDiropq_##name; } while (0) + +struct dentry *au_diropq_sio(struct dentry *dentry, aufs_bindex_t bindex, + unsigned int flags); +struct dentry *au_wh_lkup(struct dentry *h_parent, struct qstr *base_name, + struct au_branch *br); +struct dentry *au_wh_create(struct dentry *dentry, aufs_bindex_t bindex, + struct dentry *h_parent); + +/* real rmdir for the whiteout-ed dir */ +struct au_whtmp_rmdir { + struct inode *dir; + struct au_branch *br; + struct dentry *wh_dentry; + struct au_nhash whlist; +}; + +struct au_whtmp_rmdir *au_whtmp_rmdir_alloc(struct super_block *sb, gfp_t gfp); +void au_whtmp_rmdir_free(struct au_whtmp_rmdir *whtmp); +int au_whtmp_rmdir(struct inode *dir, aufs_bindex_t bindex, + struct dentry *wh_dentry, struct au_nhash *whlist); +void au_whtmp_kick_rmdir(struct inode *dir, aufs_bindex_t bindex, + struct dentry *wh_dentry, struct au_whtmp_rmdir *args); + +/* ---------------------------------------------------------------------- */ + +static inline struct dentry *au_diropq_create(struct dentry *dentry, + aufs_bindex_t bindex) +{ + return au_diropq_sio(dentry, bindex, AuDiropq_CREATE); +} + +static inline int au_diropq_remove(struct dentry *dentry, aufs_bindex_t bindex) +{ + return PTR_ERR(au_diropq_sio(dentry, bindex, !AuDiropq_CREATE)); +} + +#endif /* __KERNEL__ */ +#endif /* __AUFS_WHOUT_H__ */ diff --git a/include/fs/aufs/wkq.c b/include/fs/aufs/wkq.c new file mode 100644 index 00000000000..a3316e7e510 --- /dev/null +++ b/include/fs/aufs/wkq.c @@ -0,0 +1,390 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * workqueue for asynchronous/super-io operations + * todo: try new dredential scheme + */ + +#include +#include "aufs.h" + +/* internal workqueue named AUFS_WKQ_NAME */ + +static struct workqueue_struct *au_wkq; + +struct au_wkinfo { + struct work_struct wk; + struct kobject *kobj; + + unsigned int flags; /* see wkq.h */ + + au_wkq_func_t func; + void *args; + +#ifdef CONFIG_LOCKDEP + int dont_check; + struct held_lock **hlock; +#endif + + struct completion *comp; +}; + +/* ---------------------------------------------------------------------- */ +/* + * Aufs passes some operations to the workqueue such as the internal copyup. + * This scheme looks rather unnatural for LOCKDEP debugging feature, since the + * job run by workqueue depends upon the locks acquired in the other task. + * Delegating a small operation to the workqueue, aufs passes its lockdep + * information too. And the job in the workqueue restores the info in order to + * pretend as if it acquired those locks. This is just to make LOCKDEP work + * correctly and expectedly. + */ + +#ifndef CONFIG_LOCKDEP +AuStubInt0(au_wkq_lockdep_alloc, struct au_wkinfo *wkinfo); +AuStubVoid(au_wkq_lockdep_free, struct au_wkinfo *wkinfo); +AuStubVoid(au_wkq_lockdep_pre, struct au_wkinfo *wkinfo); +AuStubVoid(au_wkq_lockdep_post, struct au_wkinfo *wkinfo); +AuStubVoid(au_wkq_lockdep_init, struct au_wkinfo *wkinfo); +#else +static void au_wkq_lockdep_init(struct au_wkinfo *wkinfo) +{ + wkinfo->hlock = NULL; + wkinfo->dont_check = 0; +} + +/* + * 1: matched + * 0: unmatched + */ +static int au_wkq_lockdep_test(struct lock_class_key *key, const char *name) +{ + static DEFINE_SPINLOCK(spin); + static struct { + char *name; + struct lock_class_key *key; + } a[] = { + { .name = "&sbinfo->si_rwsem" }, + { .name = "&finfo->fi_rwsem" }, + { .name = "&dinfo->di_rwsem" }, + { .name = "&iinfo->ii_rwsem" } + }; + static int set; + int i; + + /* lockless read from 'set.' see below */ + if (set == ARRAY_SIZE(a)) { + for (i = 0; i < ARRAY_SIZE(a); i++) + if (a[i].key == key) + goto match; + goto unmatch; + } + + spin_lock(&spin); + if (set) + for (i = 0; i < ARRAY_SIZE(a); i++) + if (a[i].key == key) { + spin_unlock(&spin); + goto match; + } + for (i = 0; i < ARRAY_SIZE(a); i++) { + if (a[i].key) { + if (unlikely(a[i].key == key)) { /* rare but possible */ + spin_unlock(&spin); + goto match; + } else + continue; + } + if (strstr(a[i].name, name)) { + /* + * the order of these three lines is important for the + * lockless read above. + */ + a[i].key = key; + spin_unlock(&spin); + set++; + /* AuDbg("%d, %s\n", set, name); */ + goto match; + } + } + spin_unlock(&spin); + goto unmatch; + +match: + return 1; +unmatch: + return 0; +} + +static int au_wkq_lockdep_alloc(struct au_wkinfo *wkinfo) +{ + int err, n; + struct task_struct *curr; + struct held_lock **hl, *held_locks, *p; + + err = 0; + curr = current; + wkinfo->dont_check = lockdep_recursing(curr); + if (wkinfo->dont_check) + goto out; + n = curr->lockdep_depth; + if (!n) + goto out; + + err = -ENOMEM; + wkinfo->hlock = kmalloc_array(n + 1, sizeof(*wkinfo->hlock), GFP_NOFS); + if (unlikely(!wkinfo->hlock)) + goto out; + + err = 0; +#if 0 + if (0 && au_debug_test()) /* left for debugging */ + lockdep_print_held_locks(curr); +#endif + held_locks = curr->held_locks; + hl = wkinfo->hlock; + while (n--) { + p = held_locks++; + if (au_wkq_lockdep_test(p->instance->key, p->instance->name)) + *hl++ = p; + } + *hl = NULL; + +out: + return err; +} + +static void au_wkq_lockdep_free(struct au_wkinfo *wkinfo) +{ + kfree(wkinfo->hlock); +} + +static void au_wkq_lockdep_pre(struct au_wkinfo *wkinfo) +{ + struct held_lock *p, **hl = wkinfo->hlock; + int subclass; + + if (wkinfo->dont_check) + lockdep_off(); + if (!hl) + return; + while ((p = *hl++)) { /* assignment */ + subclass = lockdep_hlock_class(p)->subclass; + /* AuDbg("%s, %d\n", p->instance->name, subclass); */ + if (p->read) + rwsem_acquire_read(p->instance, subclass, 0, + /*p->acquire_ip*/_RET_IP_); + else + rwsem_acquire(p->instance, subclass, 0, + /*p->acquire_ip*/_RET_IP_); + } +} + +static void au_wkq_lockdep_post(struct au_wkinfo *wkinfo) +{ + struct held_lock *p, **hl = wkinfo->hlock; + + if (wkinfo->dont_check) + lockdep_on(); + if (!hl) + return; + while ((p = *hl++)) /* assignment */ + rwsem_release(p->instance, 0, /*p->acquire_ip*/_RET_IP_); +} +#endif + +static void wkq_func(struct work_struct *wk) +{ + struct au_wkinfo *wkinfo = container_of(wk, struct au_wkinfo, wk); + + AuDebugOn(!uid_eq(current_fsuid(), GLOBAL_ROOT_UID)); + AuDebugOn(rlimit(RLIMIT_FSIZE) != RLIM_INFINITY); + + au_wkq_lockdep_pre(wkinfo); + wkinfo->func(wkinfo->args); + au_wkq_lockdep_post(wkinfo); + if (au_ftest_wkq(wkinfo->flags, WAIT)) + complete(wkinfo->comp); + else { + kobject_put(wkinfo->kobj); + module_put(THIS_MODULE); /* todo: ?? */ + kfree(wkinfo); + } +} + +/* + * Since struct completion is large, try allocating it dynamically. + */ +#if 1 /* defined(CONFIG_4KSTACKS) || defined(AuTest4KSTACKS) */ +#define AuWkqCompDeclare(name) struct completion *comp = NULL + +static int au_wkq_comp_alloc(struct au_wkinfo *wkinfo, struct completion **comp) +{ + *comp = kmalloc(sizeof(**comp), GFP_NOFS); + if (*comp) { + init_completion(*comp); + wkinfo->comp = *comp; + return 0; + } + return -ENOMEM; +} + +static void au_wkq_comp_free(struct completion *comp) +{ + kfree(comp); +} + +#else + +/* no braces */ +#define AuWkqCompDeclare(name) \ + DECLARE_COMPLETION_ONSTACK(_ ## name); \ + struct completion *comp = &_ ## name + +static int au_wkq_comp_alloc(struct au_wkinfo *wkinfo, struct completion **comp) +{ + wkinfo->comp = *comp; + return 0; +} + +static void au_wkq_comp_free(struct completion *comp __maybe_unused) +{ + /* empty */ +} +#endif /* 4KSTACKS */ + +static void au_wkq_run(struct au_wkinfo *wkinfo) +{ + if (au_ftest_wkq(wkinfo->flags, NEST)) { + if (au_wkq_test()) { + AuWarn1("wkq from wkq, unless silly-rename on NFS," + " due to a dead dir by UDBA?\n"); + AuDebugOn(au_ftest_wkq(wkinfo->flags, WAIT)); + } + } else + au_dbg_verify_kthread(); + + if (au_ftest_wkq(wkinfo->flags, WAIT)) { + INIT_WORK_ONSTACK(&wkinfo->wk, wkq_func); + queue_work(au_wkq, &wkinfo->wk); + } else { + INIT_WORK(&wkinfo->wk, wkq_func); + schedule_work(&wkinfo->wk); + } +} + +/* + * Be careful. It is easy to make deadlock happen. + * processA: lock, wkq and wait + * processB: wkq and wait, lock in wkq + * --> deadlock + */ +int au_wkq_do_wait(unsigned int flags, au_wkq_func_t func, void *args) +{ + int err; + AuWkqCompDeclare(comp); + struct au_wkinfo wkinfo = { + .flags = flags, + .func = func, + .args = args + }; + + err = au_wkq_comp_alloc(&wkinfo, &comp); + if (unlikely(err)) + goto out; + err = au_wkq_lockdep_alloc(&wkinfo); + if (unlikely(err)) + goto out_comp; + if (!err) { + au_wkq_run(&wkinfo); + /* no timeout, no interrupt */ + wait_for_completion(wkinfo.comp); + } + au_wkq_lockdep_free(&wkinfo); + +out_comp: + au_wkq_comp_free(comp); +out: + destroy_work_on_stack(&wkinfo.wk); + return err; +} + +/* + * Note: dget/dput() in func for aufs dentries are not supported. It will be a + * problem in a concurrent umounting. + */ +int au_wkq_nowait(au_wkq_func_t func, void *args, struct super_block *sb, + unsigned int flags) +{ + int err; + struct au_wkinfo *wkinfo; + + atomic_inc(&au_sbi(sb)->si_nowait.nw_len); + + /* + * wkq_func() must free this wkinfo. + * it highly depends upon the implementation of workqueue. + */ + err = 0; + wkinfo = kmalloc(sizeof(*wkinfo), GFP_NOFS); + if (wkinfo) { + wkinfo->kobj = &au_sbi(sb)->si_kobj; + wkinfo->flags = flags & ~AuWkq_WAIT; + wkinfo->func = func; + wkinfo->args = args; + wkinfo->comp = NULL; + au_wkq_lockdep_init(wkinfo); + kobject_get(wkinfo->kobj); + __module_get(THIS_MODULE); /* todo: ?? */ + + au_wkq_run(wkinfo); + } else { + err = -ENOMEM; + au_nwt_done(&au_sbi(sb)->si_nowait); + } + + return err; +} + +/* ---------------------------------------------------------------------- */ + +void au_nwt_init(struct au_nowait_tasks *nwt) +{ + atomic_set(&nwt->nw_len, 0); + /* smp_mb(); */ /* atomic_set */ + init_waitqueue_head(&nwt->nw_wq); +} + +void au_wkq_fin(void) +{ + destroy_workqueue(au_wkq); +} + +int __init au_wkq_init(void) +{ + int err; + + err = 0; + au_wkq = alloc_workqueue(AUFS_WKQ_NAME, 0, WQ_DFL_ACTIVE); + if (IS_ERR(au_wkq)) + err = PTR_ERR(au_wkq); + else if (!au_wkq) + err = -ENOMEM; + + return err; +} diff --git a/include/fs/aufs/wkq.h b/include/fs/aufs/wkq.h new file mode 100644 index 00000000000..9fc86c11aee --- /dev/null +++ b/include/fs/aufs/wkq.h @@ -0,0 +1,93 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * workqueue for asynchronous/super-io operations + * todo: try new credentials management scheme + */ + +#ifndef __AUFS_WKQ_H__ +#define __AUFS_WKQ_H__ + +#ifdef __KERNEL__ + +#include + +struct super_block; + +/* ---------------------------------------------------------------------- */ + +/* + * in the next operation, wait for the 'nowait' tasks in system-wide workqueue + */ +struct au_nowait_tasks { + atomic_t nw_len; + wait_queue_head_t nw_wq; +}; + +/* ---------------------------------------------------------------------- */ + +typedef void (*au_wkq_func_t)(void *args); + +/* wkq flags */ +#define AuWkq_WAIT 1 +#define AuWkq_NEST (1 << 1) +#define au_ftest_wkq(flags, name) ((flags) & AuWkq_##name) +#define au_fset_wkq(flags, name) \ + do { (flags) |= AuWkq_##name; } while (0) +#define au_fclr_wkq(flags, name) \ + do { (flags) &= ~AuWkq_##name; } while (0) + +#ifndef CONFIG_AUFS_HNOTIFY +#undef AuWkq_NEST +#define AuWkq_NEST 0 +#endif + +/* wkq.c */ +int au_wkq_do_wait(unsigned int flags, au_wkq_func_t func, void *args); +int au_wkq_nowait(au_wkq_func_t func, void *args, struct super_block *sb, + unsigned int flags); +void au_nwt_init(struct au_nowait_tasks *nwt); +int __init au_wkq_init(void); +void au_wkq_fin(void); + +/* ---------------------------------------------------------------------- */ + +static inline int au_wkq_test(void) +{ + return current->flags & PF_WQ_WORKER; +} + +static inline int au_wkq_wait(au_wkq_func_t func, void *args) +{ + return au_wkq_do_wait(AuWkq_WAIT, func, args); +} + +static inline void au_nwt_done(struct au_nowait_tasks *nwt) +{ + if (atomic_dec_and_test(&nwt->nw_len)) + wake_up_all(&nwt->nw_wq); +} + +static inline int au_nwt_flush(struct au_nowait_tasks *nwt) +{ + wait_event(nwt->nw_wq, !atomic_read(&nwt->nw_len)); + return 0; +} + +#endif /* __KERNEL__ */ +#endif /* __AUFS_WKQ_H__ */ diff --git a/include/fs/aufs/xattr.c b/include/fs/aufs/xattr.c new file mode 100644 index 00000000000..7c647bbbcd1 --- /dev/null +++ b/include/fs/aufs/xattr.c @@ -0,0 +1,355 @@ +/* + * Copyright (C) 2014-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * handling xattr functions + */ + +#include +#include +#include +#include "aufs.h" + +static int au_xattr_ignore(int err, char *name, unsigned int ignore_flags) +{ + if (!ignore_flags) + goto out; + switch (err) { + case -ENOMEM: + case -EDQUOT: + goto out; + } + + if ((ignore_flags & AuBrAttr_ICEX) == AuBrAttr_ICEX) { + err = 0; + goto out; + } + +#define cmp(brattr, prefix) do { \ + if (!strncmp(name, XATTR_##prefix##_PREFIX, \ + XATTR_##prefix##_PREFIX_LEN)) { \ + if (ignore_flags & AuBrAttr_ICEX_##brattr) \ + err = 0; \ + goto out; \ + } \ + } while (0) + + cmp(SEC, SECURITY); + cmp(SYS, SYSTEM); + cmp(TR, TRUSTED); + cmp(USR, USER); +#undef cmp + + if (ignore_flags & AuBrAttr_ICEX_OTH) + err = 0; + +out: + return err; +} + +static const int au_xattr_out_of_list = AuBrAttr_ICEX_OTH << 1; + +static int au_do_cpup_xattr(struct dentry *h_dst, struct dentry *h_src, + char *name, char **buf, unsigned int ignore_flags, + unsigned int verbose) +{ + int err; + ssize_t ssz; + struct inode *h_idst; + + ssz = vfs_getxattr_alloc(h_src, name, buf, 0, GFP_NOFS); + err = ssz; + if (unlikely(err <= 0)) { + if (err == -ENODATA + || (err == -EOPNOTSUPP + && ((ignore_flags & au_xattr_out_of_list) + || (au_test_nfs_noacl(d_inode(h_src)) + && (!strcmp(name, XATTR_NAME_POSIX_ACL_ACCESS) + || !strcmp(name, + XATTR_NAME_POSIX_ACL_DEFAULT)))) + )) + err = 0; + if (err && (verbose || au_debug_test())) + pr_err("%s, err %d\n", name, err); + goto out; + } + + /* unlock it temporary */ + h_idst = d_inode(h_dst); + inode_unlock(h_idst); + err = vfsub_setxattr(h_dst, name, *buf, ssz, /*flags*/0); + inode_lock_nested(h_idst, AuLsc_I_CHILD2); + if (unlikely(err)) { + if (verbose || au_debug_test()) + pr_err("%s, err %d\n", name, err); + err = au_xattr_ignore(err, name, ignore_flags); + } + +out: + return err; +} + +int au_cpup_xattr(struct dentry *h_dst, struct dentry *h_src, int ignore_flags, + unsigned int verbose) +{ + int err, unlocked, acl_access, acl_default; + ssize_t ssz; + struct inode *h_isrc, *h_idst; + char *value, *p, *o, *e; + + /* try stopping to update the source inode while we are referencing */ + /* there should not be the parent-child relationship between them */ + h_isrc = d_inode(h_src); + h_idst = d_inode(h_dst); + inode_unlock(h_idst); + vfsub_inode_lock_shared_nested(h_isrc, AuLsc_I_CHILD); + inode_lock_nested(h_idst, AuLsc_I_CHILD2); + unlocked = 0; + + /* some filesystems don't list POSIX ACL, for example tmpfs */ + ssz = vfs_listxattr(h_src, NULL, 0); + err = ssz; + if (unlikely(err < 0)) { + AuTraceErr(err); + if (err == -ENODATA + || err == -EOPNOTSUPP) + err = 0; /* ignore */ + goto out; + } + + err = 0; + p = NULL; + o = NULL; + if (ssz) { + err = -ENOMEM; + p = kmalloc(ssz, GFP_NOFS); + o = p; + if (unlikely(!p)) + goto out; + err = vfs_listxattr(h_src, p, ssz); + } + inode_unlock_shared(h_isrc); + unlocked = 1; + AuDbg("err %d, ssz %zd\n", err, ssz); + if (unlikely(err < 0)) + goto out_free; + + err = 0; + e = p + ssz; + value = NULL; + acl_access = 0; + acl_default = 0; + while (!err && p < e) { + acl_access |= !strncmp(p, XATTR_NAME_POSIX_ACL_ACCESS, + sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1); + acl_default |= !strncmp(p, XATTR_NAME_POSIX_ACL_DEFAULT, + sizeof(XATTR_NAME_POSIX_ACL_DEFAULT) + - 1); + err = au_do_cpup_xattr(h_dst, h_src, p, &value, ignore_flags, + verbose); + p += strlen(p) + 1; + } + AuTraceErr(err); + ignore_flags |= au_xattr_out_of_list; + if (!err && !acl_access) { + err = au_do_cpup_xattr(h_dst, h_src, + XATTR_NAME_POSIX_ACL_ACCESS, &value, + ignore_flags, verbose); + AuTraceErr(err); + } + if (!err && !acl_default) { + err = au_do_cpup_xattr(h_dst, h_src, + XATTR_NAME_POSIX_ACL_DEFAULT, &value, + ignore_flags, verbose); + AuTraceErr(err); + } + + kfree(value); + +out_free: + kfree(o); +out: + if (!unlocked) + inode_unlock_shared(h_isrc); + AuTraceErr(err); + return err; +} + +/* ---------------------------------------------------------------------- */ + +static int au_smack_reentering(struct super_block *sb) +{ +#if IS_ENABLED(CONFIG_SECURITY_SMACK) + /* + * as a part of lookup, smack_d_instantiate() is called, and it calls + * i_op->getxattr(). ouch. + */ + return si_pid_test(sb); +#else + return 0; +#endif +} + +enum { + AU_XATTR_LIST, + AU_XATTR_GET +}; + +struct au_lgxattr { + int type; + union { + struct { + char *list; + size_t size; + } list; + struct { + const char *name; + void *value; + size_t size; + } get; + } u; +}; + +static ssize_t au_lgxattr(struct dentry *dentry, struct au_lgxattr *arg) +{ + ssize_t err; + int reenter; + struct path h_path; + struct super_block *sb; + + sb = dentry->d_sb; + reenter = au_smack_reentering(sb); + if (!reenter) { + err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM); + if (unlikely(err)) + goto out; + } + err = au_h_path_getattr(dentry, /*force*/1, &h_path, reenter); + if (unlikely(err)) + goto out_si; + if (unlikely(!h_path.dentry)) + /* illegally overlapped or something */ + goto out_di; /* pretending success */ + + /* always topmost entry only */ + switch (arg->type) { + case AU_XATTR_LIST: + err = vfs_listxattr(h_path.dentry, + arg->u.list.list, arg->u.list.size); + break; + case AU_XATTR_GET: + AuDebugOn(d_is_negative(h_path.dentry)); + err = vfs_getxattr(h_path.dentry, + arg->u.get.name, arg->u.get.value, + arg->u.get.size); + break; + } + +out_di: + if (!reenter) + di_read_unlock(dentry, AuLock_IR); +out_si: + if (!reenter) + si_read_unlock(sb); +out: + AuTraceErr(err); + return err; +} + +ssize_t aufs_listxattr(struct dentry *dentry, char *list, size_t size) +{ + struct au_lgxattr arg = { + .type = AU_XATTR_LIST, + .u.list = { + .list = list, + .size = size + }, + }; + + return au_lgxattr(dentry, &arg); +} + +static ssize_t au_getxattr(struct dentry *dentry, + struct inode *inode __maybe_unused, + const char *name, void *value, size_t size) +{ + struct au_lgxattr arg = { + .type = AU_XATTR_GET, + .u.get = { + .name = name, + .value = value, + .size = size + }, + }; + + return au_lgxattr(dentry, &arg); +} + +static int au_setxattr(struct dentry *dentry, struct inode *inode, + const char *name, const void *value, size_t size, + int flags) +{ + struct au_sxattr arg = { + .type = AU_XATTR_SET, + .u.set = { + .name = name, + .value = value, + .size = size, + .flags = flags + }, + }; + + return au_sxattr(dentry, inode, &arg); +} + +/* ---------------------------------------------------------------------- */ + +static int au_xattr_get(const struct xattr_handler *handler, + struct dentry *dentry, struct inode *inode, + const char *name, void *buffer, size_t size) +{ + return au_getxattr(dentry, inode, name, buffer, size); +} + +static int au_xattr_set(const struct xattr_handler *handler, + struct dentry *dentry, struct inode *inode, + const char *name, const void *value, size_t size, + int flags) +{ + return au_setxattr(dentry, inode, name, value, size, flags); +} + +static const struct xattr_handler au_xattr_handler = { + .name = "", + .prefix = "", + .get = au_xattr_get, + .set = au_xattr_set +}; + +static const struct xattr_handler *au_xattr_handlers[] = { +#ifdef CONFIG_FS_POSIX_ACL + &posix_acl_access_xattr_handler, + &posix_acl_default_xattr_handler, +#endif + &au_xattr_handler, /* must be last */ + NULL +}; + +void au_xattr_init(struct super_block *sb) +{ + sb->s_xattr = au_xattr_handlers; +} diff --git a/include/fs/aufs/xino.c b/include/fs/aufs/xino.c new file mode 100644 index 00000000000..29f53f9e596 --- /dev/null +++ b/include/fs/aufs/xino.c @@ -0,0 +1,1469 @@ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* + * external inode number translation table and bitmap + */ + +#include +#include +#include "aufs.h" + +static ssize_t xino_fread_wkq(vfs_readf_t func, struct file *file, void *buf, + size_t size, loff_t *pos); + +/* todo: unnecessary to support mmap_sem since kernel-space? */ +ssize_t xino_fread(vfs_readf_t func, struct file *file, void *kbuf, size_t size, + loff_t *pos) +{ + ssize_t err; + mm_segment_t oldfs; + union { + void *k; + char __user *u; + } buf; + int i; + const int prevent_endless = 10; + + i = 0; + buf.k = kbuf; + oldfs = get_fs(); + set_fs(KERNEL_DS); + do { + err = func(file, buf.u, size, pos); + if (err == -EINTR + && !au_wkq_test() + && fatal_signal_pending(current)) { + set_fs(oldfs); + err = xino_fread_wkq(func, file, kbuf, size, pos); + BUG_ON(err == -EINTR); + oldfs = get_fs(); + set_fs(KERNEL_DS); + } + } while (i++ < prevent_endless + && (err == -EAGAIN || err == -EINTR)); + set_fs(oldfs); + +#if 0 /* reserved for future use */ + if (err > 0) + fsnotify_access(file->f_path.dentry); +#endif + + return err; +} + +struct xino_fread_args { + ssize_t *errp; + vfs_readf_t func; + struct file *file; + void *buf; + size_t size; + loff_t *pos; +}; + +static void call_xino_fread(void *args) +{ + struct xino_fread_args *a = args; + *a->errp = xino_fread(a->func, a->file, a->buf, a->size, a->pos); +} + +static ssize_t xino_fread_wkq(vfs_readf_t func, struct file *file, void *buf, + size_t size, loff_t *pos) +{ + ssize_t err; + int wkq_err; + struct xino_fread_args args = { + .errp = &err, + .func = func, + .file = file, + .buf = buf, + .size = size, + .pos = pos + }; + + wkq_err = au_wkq_wait(call_xino_fread, &args); + if (unlikely(wkq_err)) + err = wkq_err; + + return err; +} + +/* ---------------------------------------------------------------------- */ + +static ssize_t xino_fwrite_wkq(vfs_writef_t func, struct file *file, void *buf, + size_t size, loff_t *pos); + +static ssize_t do_xino_fwrite(vfs_writef_t func, struct file *file, void *kbuf, + size_t size, loff_t *pos) +{ + ssize_t err; + mm_segment_t oldfs; + union { + void *k; + const char __user *u; + } buf; + int i; + const int prevent_endless = 10; + + i = 0; + buf.k = kbuf; + oldfs = get_fs(); + set_fs(KERNEL_DS); + do { + err = func(file, buf.u, size, pos); + if (err == -EINTR + && !au_wkq_test() + && fatal_signal_pending(current)) { + set_fs(oldfs); + err = xino_fwrite_wkq(func, file, kbuf, size, pos); + BUG_ON(err == -EINTR); + oldfs = get_fs(); + set_fs(KERNEL_DS); + } + } while (i++ < prevent_endless + && (err == -EAGAIN || err == -EINTR)); + set_fs(oldfs); + +#if 0 /* reserved for future use */ + if (err > 0) + fsnotify_modify(file->f_path.dentry); +#endif + + return err; +} + +struct do_xino_fwrite_args { + ssize_t *errp; + vfs_writef_t func; + struct file *file; + void *buf; + size_t size; + loff_t *pos; +}; + +static void call_do_xino_fwrite(void *args) +{ + struct do_xino_fwrite_args *a = args; + *a->errp = do_xino_fwrite(a->func, a->file, a->buf, a->size, a->pos); +} + +static ssize_t xino_fwrite_wkq(vfs_writef_t func, struct file *file, void *buf, + size_t size, loff_t *pos) +{ + ssize_t err; + int wkq_err; + struct do_xino_fwrite_args args = { + .errp = &err, + .func = func, + .file = file, + .buf = buf, + .size = size, + .pos = pos + }; + + /* + * it breaks RLIMIT_FSIZE and normal user's limit, + * users should care about quota and real 'filesystem full.' + */ + wkq_err = au_wkq_wait(call_do_xino_fwrite, &args); + if (unlikely(wkq_err)) + err = wkq_err; + + return err; +} + +ssize_t xino_fwrite(vfs_writef_t func, struct file *file, void *buf, + size_t size, loff_t *pos) +{ + ssize_t err; + + if (rlimit(RLIMIT_FSIZE) == RLIM_INFINITY) { + lockdep_off(); + err = do_xino_fwrite(func, file, buf, size, pos); + lockdep_on(); + } else { + lockdep_off(); + err = xino_fwrite_wkq(func, file, buf, size, pos); + lockdep_on(); + } + + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* + * create a new xinofile at the same place/path as @base_file. + */ +struct file *au_xino_create2(struct file *base_file, struct file *copy_src) +{ + struct file *file; + struct dentry *base, *parent; + struct inode *dir, *delegated; + struct qstr *name; + struct path path; + int err; + + base = base_file->f_path.dentry; + parent = base->d_parent; /* dir inode is locked */ + dir = d_inode(parent); + IMustLock(dir); + + file = ERR_PTR(-EINVAL); + name = &base->d_name; + path.dentry = vfsub_lookup_one_len(name->name, parent, name->len); + if (IS_ERR(path.dentry)) { + file = (void *)path.dentry; + pr_err("%pd lookup err %ld\n", + base, PTR_ERR(path.dentry)); + goto out; + } + + /* no need to mnt_want_write() since we call dentry_open() later */ + err = vfs_create(dir, path.dentry, S_IRUGO | S_IWUGO, NULL); + if (unlikely(err)) { + file = ERR_PTR(err); + pr_err("%pd create err %d\n", base, err); + goto out_dput; + } + + path.mnt = base_file->f_path.mnt; + file = vfsub_dentry_open(&path, + O_RDWR | O_CREAT | O_EXCL | O_LARGEFILE + /* | __FMODE_NONOTIFY */); + if (IS_ERR(file)) { + pr_err("%pd open err %ld\n", base, PTR_ERR(file)); + goto out_dput; + } + + delegated = NULL; + err = vfsub_unlink(dir, &file->f_path, &delegated, /*force*/0); + if (unlikely(err == -EWOULDBLOCK)) { + pr_warn("cannot retry for NFSv4 delegation" + " for an internal unlink\n"); + iput(delegated); + } + if (unlikely(err)) { + pr_err("%pd unlink err %d\n", base, err); + goto out_fput; + } + + if (copy_src) { + /* no one can touch copy_src xino */ + err = au_copy_file(file, copy_src, vfsub_f_size_read(copy_src)); + if (unlikely(err)) { + pr_err("%pd copy err %d\n", base, err); + goto out_fput; + } + } + goto out_dput; /* success */ + +out_fput: + fput(file); + file = ERR_PTR(err); +out_dput: + dput(path.dentry); +out: + return file; +} + +struct au_xino_lock_dir { + struct au_hinode *hdir; + struct dentry *parent; + struct inode *dir; +}; + +static void au_xino_lock_dir(struct super_block *sb, struct file *xino, + struct au_xino_lock_dir *ldir) +{ + aufs_bindex_t brid, bindex; + + ldir->hdir = NULL; + bindex = -1; + brid = au_xino_brid(sb); + if (brid >= 0) + bindex = au_br_index(sb, brid); + if (bindex >= 0) { + ldir->hdir = au_hi(d_inode(sb->s_root), bindex); + au_hn_inode_lock_nested(ldir->hdir, AuLsc_I_PARENT); + } else { + ldir->parent = dget_parent(xino->f_path.dentry); + ldir->dir = d_inode(ldir->parent); + inode_lock_nested(ldir->dir, AuLsc_I_PARENT); + } +} + +static void au_xino_unlock_dir(struct au_xino_lock_dir *ldir) +{ + if (ldir->hdir) + au_hn_inode_unlock(ldir->hdir); + else { + inode_unlock(ldir->dir); + dput(ldir->parent); + } +} + +/* ---------------------------------------------------------------------- */ + +/* trucate xino files asynchronously */ + +int au_xino_trunc(struct super_block *sb, aufs_bindex_t bindex) +{ + int err; + unsigned long jiffy; + blkcnt_t blocks; + aufs_bindex_t bi, bbot; + struct kstatfs *st; + struct au_branch *br; + struct file *new_xino, *file; + struct super_block *h_sb; + struct au_xino_lock_dir ldir; + + err = -ENOMEM; + st = kmalloc(sizeof(*st), GFP_NOFS); + if (unlikely(!st)) + goto out; + + err = -EINVAL; + bbot = au_sbbot(sb); + if (unlikely(bindex < 0 || bbot < bindex)) + goto out_st; + br = au_sbr(sb, bindex); + file = br->br_xino.xi_file; + if (!file) + goto out_st; + + err = vfs_statfs(&file->f_path, st); + if (unlikely(err)) + AuErr1("statfs err %d, ignored\n", err); + jiffy = jiffies; + blocks = file_inode(file)->i_blocks; + pr_info("begin truncating xino(b%d), ib%llu, %llu/%llu free blks\n", + bindex, (u64)blocks, st->f_bfree, st->f_blocks); + + au_xino_lock_dir(sb, file, &ldir); + /* mnt_want_write() is unnecessary here */ + new_xino = au_xino_create2(file, file); + au_xino_unlock_dir(&ldir); + err = PTR_ERR(new_xino); + if (IS_ERR(new_xino)) { + pr_err("err %d, ignored\n", err); + goto out_st; + } + err = 0; + fput(file); + br->br_xino.xi_file = new_xino; + + h_sb = au_br_sb(br); + for (bi = 0; bi <= bbot; bi++) { + if (unlikely(bi == bindex)) + continue; + br = au_sbr(sb, bi); + if (au_br_sb(br) != h_sb) + continue; + + fput(br->br_xino.xi_file); + br->br_xino.xi_file = new_xino; + get_file(new_xino); + } + + err = vfs_statfs(&new_xino->f_path, st); + if (!err) { + pr_info("end truncating xino(b%d), ib%llu, %llu/%llu free blks\n", + bindex, (u64)file_inode(new_xino)->i_blocks, + st->f_bfree, st->f_blocks); + if (file_inode(new_xino)->i_blocks < blocks) + au_sbi(sb)->si_xino_jiffy = jiffy; + } else + AuErr1("statfs err %d, ignored\n", err); + +out_st: + kfree(st); +out: + return err; +} + +struct xino_do_trunc_args { + struct super_block *sb; + struct au_branch *br; +}; + +static void xino_do_trunc(void *_args) +{ + struct xino_do_trunc_args *args = _args; + struct super_block *sb; + struct au_branch *br; + struct inode *dir; + int err; + aufs_bindex_t bindex; + + err = 0; + sb = args->sb; + dir = d_inode(sb->s_root); + br = args->br; + + si_noflush_write_lock(sb); + ii_read_lock_parent(dir); + bindex = au_br_index(sb, br->br_id); + err = au_xino_trunc(sb, bindex); + ii_read_unlock(dir); + if (unlikely(err)) + pr_warn("err b%d, (%d)\n", bindex, err); + atomic_dec(&br->br_xino_running); + au_br_put(br); + si_write_unlock(sb); + au_nwt_done(&au_sbi(sb)->si_nowait); + kfree(args); +} + +static int xino_trunc_test(struct super_block *sb, struct au_branch *br) +{ + int err; + struct kstatfs st; + struct au_sbinfo *sbinfo; + + /* todo: si_xino_expire and the ratio should be customizable */ + sbinfo = au_sbi(sb); + if (time_before(jiffies, + sbinfo->si_xino_jiffy + sbinfo->si_xino_expire)) + return 0; + + /* truncation border */ + err = vfs_statfs(&br->br_xino.xi_file->f_path, &st); + if (unlikely(err)) { + AuErr1("statfs err %d, ignored\n", err); + return 0; + } + if (div64_u64(st.f_bfree * 100, st.f_blocks) >= AUFS_XINO_DEF_TRUNC) + return 0; + + return 1; +} + +static void xino_try_trunc(struct super_block *sb, struct au_branch *br) +{ + struct xino_do_trunc_args *args; + int wkq_err; + + if (!xino_trunc_test(sb, br)) + return; + + if (atomic_inc_return(&br->br_xino_running) > 1) + goto out; + + /* lock and kfree() will be called in trunc_xino() */ + args = kmalloc(sizeof(*args), GFP_NOFS); + if (unlikely(!args)) { + AuErr1("no memory\n"); + goto out; + } + + au_br_get(br); + args->sb = sb; + args->br = br; + wkq_err = au_wkq_nowait(xino_do_trunc, args, sb, /*flags*/0); + if (!wkq_err) + return; /* success */ + + pr_err("wkq %d\n", wkq_err); + au_br_put(br); + kfree(args); + +out: + atomic_dec(&br->br_xino_running); +} + +/* ---------------------------------------------------------------------- */ + +static int au_xino_do_write(vfs_writef_t write, struct file *file, + ino_t h_ino, ino_t ino) +{ + loff_t pos; + ssize_t sz; + + pos = h_ino; + if (unlikely(au_loff_max / sizeof(ino) - 1 < pos)) { + AuIOErr1("too large hi%lu\n", (unsigned long)h_ino); + return -EFBIG; + } + pos *= sizeof(ino); + sz = xino_fwrite(write, file, &ino, sizeof(ino), &pos); + if (sz == sizeof(ino)) + return 0; /* success */ + + AuIOErr("write failed (%zd)\n", sz); + return -EIO; +} + +/* + * write @ino to the xinofile for the specified branch{@sb, @bindex} + * at the position of @h_ino. + * even if @ino is zero, it is written to the xinofile and means no entry. + * if the size of the xino file on a specific filesystem exceeds the watermark, + * try truncating it. + */ +int au_xino_write(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino, + ino_t ino) +{ + int err; + unsigned int mnt_flags; + struct au_branch *br; + + BUILD_BUG_ON(sizeof(long long) != sizeof(au_loff_max) + || ((loff_t)-1) > 0); + SiMustAnyLock(sb); + + mnt_flags = au_mntflags(sb); + if (!au_opt_test(mnt_flags, XINO)) + return 0; + + br = au_sbr(sb, bindex); + err = au_xino_do_write(au_sbi(sb)->si_xwrite, br->br_xino.xi_file, + h_ino, ino); + if (!err) { + if (au_opt_test(mnt_flags, TRUNC_XINO) + && au_test_fs_trunc_xino(au_br_sb(br))) + xino_try_trunc(sb, br); + return 0; /* success */ + } + + AuIOErr("write failed (%d)\n", err); + return -EIO; +} + +/* ---------------------------------------------------------------------- */ + +/* aufs inode number bitmap */ + +static const int page_bits = (int)PAGE_SIZE * BITS_PER_BYTE; +static ino_t xib_calc_ino(unsigned long pindex, int bit) +{ + ino_t ino; + + AuDebugOn(bit < 0 || page_bits <= bit); + ino = AUFS_FIRST_INO + pindex * page_bits + bit; + return ino; +} + +static void xib_calc_bit(ino_t ino, unsigned long *pindex, int *bit) +{ + AuDebugOn(ino < AUFS_FIRST_INO); + ino -= AUFS_FIRST_INO; + *pindex = ino / page_bits; + *bit = ino % page_bits; +} + +static int xib_pindex(struct super_block *sb, unsigned long pindex) +{ + int err; + loff_t pos; + ssize_t sz; + struct au_sbinfo *sbinfo; + struct file *xib; + unsigned long *p; + + sbinfo = au_sbi(sb); + MtxMustLock(&sbinfo->si_xib_mtx); + AuDebugOn(pindex > ULONG_MAX / PAGE_SIZE + || !au_opt_test(sbinfo->si_mntflags, XINO)); + + if (pindex == sbinfo->si_xib_last_pindex) + return 0; + + xib = sbinfo->si_xib; + p = sbinfo->si_xib_buf; + pos = sbinfo->si_xib_last_pindex; + pos *= PAGE_SIZE; + sz = xino_fwrite(sbinfo->si_xwrite, xib, p, PAGE_SIZE, &pos); + if (unlikely(sz != PAGE_SIZE)) + goto out; + + pos = pindex; + pos *= PAGE_SIZE; + if (vfsub_f_size_read(xib) >= pos + PAGE_SIZE) + sz = xino_fread(sbinfo->si_xread, xib, p, PAGE_SIZE, &pos); + else { + memset(p, 0, PAGE_SIZE); + sz = xino_fwrite(sbinfo->si_xwrite, xib, p, PAGE_SIZE, &pos); + } + if (sz == PAGE_SIZE) { + sbinfo->si_xib_last_pindex = pindex; + return 0; /* success */ + } + +out: + AuIOErr1("write failed (%zd)\n", sz); + err = sz; + if (sz >= 0) + err = -EIO; + return err; +} + +/* ---------------------------------------------------------------------- */ + +static void au_xib_clear_bit(struct inode *inode) +{ + int err, bit; + unsigned long pindex; + struct super_block *sb; + struct au_sbinfo *sbinfo; + + AuDebugOn(inode->i_nlink); + + sb = inode->i_sb; + xib_calc_bit(inode->i_ino, &pindex, &bit); + AuDebugOn(page_bits <= bit); + sbinfo = au_sbi(sb); + mutex_lock(&sbinfo->si_xib_mtx); + err = xib_pindex(sb, pindex); + if (!err) { + clear_bit(bit, sbinfo->si_xib_buf); + sbinfo->si_xib_next_bit = bit; + } + mutex_unlock(&sbinfo->si_xib_mtx); +} + +/* for s_op->delete_inode() */ +void au_xino_delete_inode(struct inode *inode, const int unlinked) +{ + int err; + unsigned int mnt_flags; + aufs_bindex_t bindex, bbot, bi; + unsigned char try_trunc; + struct au_iinfo *iinfo; + struct super_block *sb; + struct au_hinode *hi; + struct inode *h_inode; + struct au_branch *br; + vfs_writef_t xwrite; + + AuDebugOn(au_is_bad_inode(inode)); + + sb = inode->i_sb; + mnt_flags = au_mntflags(sb); + if (!au_opt_test(mnt_flags, XINO) + || inode->i_ino == AUFS_ROOT_INO) + return; + + if (unlinked) { + au_xigen_inc(inode); + au_xib_clear_bit(inode); + } + + iinfo = au_ii(inode); + bindex = iinfo->ii_btop; + if (bindex < 0) + return; + + xwrite = au_sbi(sb)->si_xwrite; + try_trunc = !!au_opt_test(mnt_flags, TRUNC_XINO); + hi = au_hinode(iinfo, bindex); + bbot = iinfo->ii_bbot; + for (; bindex <= bbot; bindex++, hi++) { + h_inode = hi->hi_inode; + if (!h_inode + || (!unlinked && h_inode->i_nlink)) + continue; + + /* inode may not be revalidated */ + bi = au_br_index(sb, hi->hi_id); + if (bi < 0) + continue; + + br = au_sbr(sb, bi); + err = au_xino_do_write(xwrite, br->br_xino.xi_file, + h_inode->i_ino, /*ino*/0); + if (!err && try_trunc + && au_test_fs_trunc_xino(au_br_sb(br))) + xino_try_trunc(sb, br); + } +} + +/* get an unused inode number from bitmap */ +ino_t au_xino_new_ino(struct super_block *sb) +{ + ino_t ino; + unsigned long *p, pindex, ul, pend; + struct au_sbinfo *sbinfo; + struct file *file; + int free_bit, err; + + if (!au_opt_test(au_mntflags(sb), XINO)) + return iunique(sb, AUFS_FIRST_INO); + + sbinfo = au_sbi(sb); + mutex_lock(&sbinfo->si_xib_mtx); + p = sbinfo->si_xib_buf; + free_bit = sbinfo->si_xib_next_bit; + if (free_bit < page_bits && !test_bit(free_bit, p)) + goto out; /* success */ + free_bit = find_first_zero_bit(p, page_bits); + if (free_bit < page_bits) + goto out; /* success */ + + pindex = sbinfo->si_xib_last_pindex; + for (ul = pindex - 1; ul < ULONG_MAX; ul--) { + err = xib_pindex(sb, ul); + if (unlikely(err)) + goto out_err; + free_bit = find_first_zero_bit(p, page_bits); + if (free_bit < page_bits) + goto out; /* success */ + } + + file = sbinfo->si_xib; + pend = vfsub_f_size_read(file) / PAGE_SIZE; + for (ul = pindex + 1; ul <= pend; ul++) { + err = xib_pindex(sb, ul); + if (unlikely(err)) + goto out_err; + free_bit = find_first_zero_bit(p, page_bits); + if (free_bit < page_bits) + goto out; /* success */ + } + BUG(); + +out: + set_bit(free_bit, p); + sbinfo->si_xib_next_bit = free_bit + 1; + pindex = sbinfo->si_xib_last_pindex; + mutex_unlock(&sbinfo->si_xib_mtx); + ino = xib_calc_ino(pindex, free_bit); + AuDbg("i%lu\n", (unsigned long)ino); + return ino; +out_err: + mutex_unlock(&sbinfo->si_xib_mtx); + AuDbg("i0\n"); + return 0; +} + +/* + * read @ino from xinofile for the specified branch{@sb, @bindex} + * at the position of @h_ino. + * if @ino does not exist and @do_new is true, get new one. + */ +int au_xino_read(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino, + ino_t *ino) +{ + int err; + ssize_t sz; + loff_t pos; + struct file *file; + struct au_sbinfo *sbinfo; + + *ino = 0; + if (!au_opt_test(au_mntflags(sb), XINO)) + return 0; /* no xino */ + + err = 0; + sbinfo = au_sbi(sb); + pos = h_ino; + if (unlikely(au_loff_max / sizeof(*ino) - 1 < pos)) { + AuIOErr1("too large hi%lu\n", (unsigned long)h_ino); + return -EFBIG; + } + pos *= sizeof(*ino); + + file = au_sbr(sb, bindex)->br_xino.xi_file; + if (vfsub_f_size_read(file) < pos + sizeof(*ino)) + return 0; /* no ino */ + + sz = xino_fread(sbinfo->si_xread, file, ino, sizeof(*ino), &pos); + if (sz == sizeof(*ino)) + return 0; /* success */ + + err = sz; + if (unlikely(sz >= 0)) { + err = -EIO; + AuIOErr("xino read error (%zd)\n", sz); + } + + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* create and set a new xino file */ + +struct file *au_xino_create(struct super_block *sb, char *fname, int silent) +{ + struct file *file; + struct dentry *h_parent, *d; + struct inode *h_dir, *inode; + int err; + + /* + * at mount-time, and the xino file is the default path, + * hnotify is disabled so we have no notify events to ignore. + * when a user specified the xino, we cannot get au_hdir to be ignored. + */ + file = vfsub_filp_open(fname, O_RDWR | O_CREAT | O_EXCL | O_LARGEFILE + /* | __FMODE_NONOTIFY */, + S_IRUGO | S_IWUGO); + if (IS_ERR(file)) { + if (!silent) + pr_err("open %s(%ld)\n", fname, PTR_ERR(file)); + return file; + } + + /* keep file count */ + err = 0; + inode = file_inode(file); + h_parent = dget_parent(file->f_path.dentry); + h_dir = d_inode(h_parent); + inode_lock_nested(h_dir, AuLsc_I_PARENT); + /* mnt_want_write() is unnecessary here */ + /* no delegation since it is just created */ + if (inode->i_nlink) + err = vfsub_unlink(h_dir, &file->f_path, /*delegated*/NULL, + /*force*/0); + inode_unlock(h_dir); + dput(h_parent); + if (unlikely(err)) { + if (!silent) + pr_err("unlink %s(%d)\n", fname, err); + goto out; + } + + err = -EINVAL; + d = file->f_path.dentry; + if (unlikely(sb == d->d_sb)) { + if (!silent) + pr_err("%s must be outside\n", fname); + goto out; + } + if (unlikely(au_test_fs_bad_xino(d->d_sb))) { + if (!silent) + pr_err("xino doesn't support %s(%s)\n", + fname, au_sbtype(d->d_sb)); + goto out; + } + return file; /* success */ + +out: + fput(file); + file = ERR_PTR(err); + return file; +} + +/* + * find another branch who is on the same filesystem of the specified + * branch{@btgt}. search until @bbot. + */ +static int is_sb_shared(struct super_block *sb, aufs_bindex_t btgt, + aufs_bindex_t bbot) +{ + aufs_bindex_t bindex; + struct super_block *tgt_sb = au_sbr_sb(sb, btgt); + + for (bindex = 0; bindex < btgt; bindex++) + if (unlikely(tgt_sb == au_sbr_sb(sb, bindex))) + return bindex; + for (bindex++; bindex <= bbot; bindex++) + if (unlikely(tgt_sb == au_sbr_sb(sb, bindex))) + return bindex; + return -1; +} + +/* ---------------------------------------------------------------------- */ + +/* + * initialize the xinofile for the specified branch @br + * at the place/path where @base_file indicates. + * test whether another branch is on the same filesystem or not, + * if @do_test is true. + */ +int au_xino_br(struct super_block *sb, struct au_branch *br, ino_t h_ino, + struct file *base_file, int do_test) +{ + int err; + ino_t ino; + aufs_bindex_t bbot, bindex; + struct au_branch *shared_br, *b; + struct file *file; + struct super_block *tgt_sb; + + shared_br = NULL; + bbot = au_sbbot(sb); + if (do_test) { + tgt_sb = au_br_sb(br); + for (bindex = 0; bindex <= bbot; bindex++) { + b = au_sbr(sb, bindex); + if (tgt_sb == au_br_sb(b)) { + shared_br = b; + break; + } + } + } + + if (!shared_br || !shared_br->br_xino.xi_file) { + struct au_xino_lock_dir ldir; + + au_xino_lock_dir(sb, base_file, &ldir); + /* mnt_want_write() is unnecessary here */ + file = au_xino_create2(base_file, NULL); + au_xino_unlock_dir(&ldir); + err = PTR_ERR(file); + if (IS_ERR(file)) + goto out; + br->br_xino.xi_file = file; + } else { + br->br_xino.xi_file = shared_br->br_xino.xi_file; + get_file(br->br_xino.xi_file); + } + + ino = AUFS_ROOT_INO; + err = au_xino_do_write(au_sbi(sb)->si_xwrite, br->br_xino.xi_file, + h_ino, ino); + if (unlikely(err)) { + fput(br->br_xino.xi_file); + br->br_xino.xi_file = NULL; + } + +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* trucate a xino bitmap file */ + +/* todo: slow */ +static int do_xib_restore(struct super_block *sb, struct file *file, void *page) +{ + int err, bit; + ssize_t sz; + unsigned long pindex; + loff_t pos, pend; + struct au_sbinfo *sbinfo; + vfs_readf_t func; + ino_t *ino; + unsigned long *p; + + err = 0; + sbinfo = au_sbi(sb); + MtxMustLock(&sbinfo->si_xib_mtx); + p = sbinfo->si_xib_buf; + func = sbinfo->si_xread; + pend = vfsub_f_size_read(file); + pos = 0; + while (pos < pend) { + sz = xino_fread(func, file, page, PAGE_SIZE, &pos); + err = sz; + if (unlikely(sz <= 0)) + goto out; + + err = 0; + for (ino = page; sz > 0; ino++, sz -= sizeof(ino)) { + if (unlikely(*ino < AUFS_FIRST_INO)) + continue; + + xib_calc_bit(*ino, &pindex, &bit); + AuDebugOn(page_bits <= bit); + err = xib_pindex(sb, pindex); + if (!err) + set_bit(bit, p); + else + goto out; + } + } + +out: + return err; +} + +static int xib_restore(struct super_block *sb) +{ + int err; + aufs_bindex_t bindex, bbot; + void *page; + + err = -ENOMEM; + page = (void *)__get_free_page(GFP_NOFS); + if (unlikely(!page)) + goto out; + + err = 0; + bbot = au_sbbot(sb); + for (bindex = 0; !err && bindex <= bbot; bindex++) + if (!bindex || is_sb_shared(sb, bindex, bindex - 1) < 0) + err = do_xib_restore + (sb, au_sbr(sb, bindex)->br_xino.xi_file, page); + else + AuDbg("b%d\n", bindex); + free_page((unsigned long)page); + +out: + return err; +} + +int au_xib_trunc(struct super_block *sb) +{ + int err; + ssize_t sz; + loff_t pos; + struct au_xino_lock_dir ldir; + struct au_sbinfo *sbinfo; + unsigned long *p; + struct file *file; + + SiMustWriteLock(sb); + + err = 0; + sbinfo = au_sbi(sb); + if (!au_opt_test(sbinfo->si_mntflags, XINO)) + goto out; + + file = sbinfo->si_xib; + if (vfsub_f_size_read(file) <= PAGE_SIZE) + goto out; + + au_xino_lock_dir(sb, file, &ldir); + /* mnt_want_write() is unnecessary here */ + file = au_xino_create2(sbinfo->si_xib, NULL); + au_xino_unlock_dir(&ldir); + err = PTR_ERR(file); + if (IS_ERR(file)) + goto out; + fput(sbinfo->si_xib); + sbinfo->si_xib = file; + + p = sbinfo->si_xib_buf; + memset(p, 0, PAGE_SIZE); + pos = 0; + sz = xino_fwrite(sbinfo->si_xwrite, sbinfo->si_xib, p, PAGE_SIZE, &pos); + if (unlikely(sz != PAGE_SIZE)) { + err = sz; + AuIOErr("err %d\n", err); + if (sz >= 0) + err = -EIO; + goto out; + } + + mutex_lock(&sbinfo->si_xib_mtx); + /* mnt_want_write() is unnecessary here */ + err = xib_restore(sb); + mutex_unlock(&sbinfo->si_xib_mtx); + +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* + * xino mount option handlers + */ + +/* xino bitmap */ +static void xino_clear_xib(struct super_block *sb) +{ + struct au_sbinfo *sbinfo; + + SiMustWriteLock(sb); + + sbinfo = au_sbi(sb); + sbinfo->si_xread = NULL; + sbinfo->si_xwrite = NULL; + if (sbinfo->si_xib) + fput(sbinfo->si_xib); + sbinfo->si_xib = NULL; + if (sbinfo->si_xib_buf) + free_page((unsigned long)sbinfo->si_xib_buf); + sbinfo->si_xib_buf = NULL; +} + +static int au_xino_set_xib(struct super_block *sb, struct file *base) +{ + int err; + loff_t pos; + struct au_sbinfo *sbinfo; + struct file *file; + + SiMustWriteLock(sb); + + sbinfo = au_sbi(sb); + file = au_xino_create2(base, sbinfo->si_xib); + err = PTR_ERR(file); + if (IS_ERR(file)) + goto out; + if (sbinfo->si_xib) + fput(sbinfo->si_xib); + sbinfo->si_xib = file; + sbinfo->si_xread = vfs_readf(file); + sbinfo->si_xwrite = vfs_writef(file); + + err = -ENOMEM; + if (!sbinfo->si_xib_buf) + sbinfo->si_xib_buf = (void *)get_zeroed_page(GFP_NOFS); + if (unlikely(!sbinfo->si_xib_buf)) + goto out_unset; + + sbinfo->si_xib_last_pindex = 0; + sbinfo->si_xib_next_bit = 0; + if (vfsub_f_size_read(file) < PAGE_SIZE) { + pos = 0; + err = xino_fwrite(sbinfo->si_xwrite, file, sbinfo->si_xib_buf, + PAGE_SIZE, &pos); + if (unlikely(err != PAGE_SIZE)) + goto out_free; + } + err = 0; + goto out; /* success */ + +out_free: + if (sbinfo->si_xib_buf) + free_page((unsigned long)sbinfo->si_xib_buf); + sbinfo->si_xib_buf = NULL; + if (err >= 0) + err = -EIO; +out_unset: + fput(sbinfo->si_xib); + sbinfo->si_xib = NULL; + sbinfo->si_xread = NULL; + sbinfo->si_xwrite = NULL; +out: + return err; +} + +/* xino for each branch */ +static void xino_clear_br(struct super_block *sb) +{ + aufs_bindex_t bindex, bbot; + struct au_branch *br; + + bbot = au_sbbot(sb); + for (bindex = 0; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + if (!br || !br->br_xino.xi_file) + continue; + + fput(br->br_xino.xi_file); + br->br_xino.xi_file = NULL; + } +} + +static int au_xino_set_br(struct super_block *sb, struct file *base) +{ + int err; + ino_t ino; + aufs_bindex_t bindex, bbot, bshared; + struct { + struct file *old, *new; + } *fpair, *p; + struct au_branch *br; + struct inode *inode; + vfs_writef_t writef; + + SiMustWriteLock(sb); + + err = -ENOMEM; + bbot = au_sbbot(sb); + fpair = kcalloc(bbot + 1, sizeof(*fpair), GFP_NOFS); + if (unlikely(!fpair)) + goto out; + + inode = d_inode(sb->s_root); + ino = AUFS_ROOT_INO; + writef = au_sbi(sb)->si_xwrite; + for (bindex = 0, p = fpair; bindex <= bbot; bindex++, p++) { + bshared = is_sb_shared(sb, bindex, bindex - 1); + if (bshared >= 0) { + /* shared xino */ + *p = fpair[bshared]; + get_file(p->new); + } + + if (!p->new) { + /* new xino */ + br = au_sbr(sb, bindex); + p->old = br->br_xino.xi_file; + p->new = au_xino_create2(base, br->br_xino.xi_file); + err = PTR_ERR(p->new); + if (IS_ERR(p->new)) { + p->new = NULL; + goto out_pair; + } + } + + err = au_xino_do_write(writef, p->new, + au_h_iptr(inode, bindex)->i_ino, ino); + if (unlikely(err)) + goto out_pair; + } + + for (bindex = 0, p = fpair; bindex <= bbot; bindex++, p++) { + br = au_sbr(sb, bindex); + if (br->br_xino.xi_file) + fput(br->br_xino.xi_file); + get_file(p->new); + br->br_xino.xi_file = p->new; + } + +out_pair: + for (bindex = 0, p = fpair; bindex <= bbot; bindex++, p++) + if (p->new) + fput(p->new); + else + break; + kfree(fpair); +out: + return err; +} + +void au_xino_clr(struct super_block *sb) +{ + struct au_sbinfo *sbinfo; + + au_xigen_clr(sb); + xino_clear_xib(sb); + xino_clear_br(sb); + sbinfo = au_sbi(sb); + /* lvalue, do not call au_mntflags() */ + au_opt_clr(sbinfo->si_mntflags, XINO); +} + +int au_xino_set(struct super_block *sb, struct au_opt_xino *xino, int remount) +{ + int err, skip; + struct dentry *parent, *cur_parent; + struct qstr *dname, *cur_name; + struct file *cur_xino; + struct inode *dir; + struct au_sbinfo *sbinfo; + + SiMustWriteLock(sb); + + err = 0; + sbinfo = au_sbi(sb); + parent = dget_parent(xino->file->f_path.dentry); + if (remount) { + skip = 0; + dname = &xino->file->f_path.dentry->d_name; + cur_xino = sbinfo->si_xib; + if (cur_xino) { + cur_parent = dget_parent(cur_xino->f_path.dentry); + cur_name = &cur_xino->f_path.dentry->d_name; + skip = (cur_parent == parent + && au_qstreq(dname, cur_name)); + dput(cur_parent); + } + if (skip) + goto out; + } + + au_opt_set(sbinfo->si_mntflags, XINO); + dir = d_inode(parent); + inode_lock_nested(dir, AuLsc_I_PARENT); + /* mnt_want_write() is unnecessary here */ + err = au_xino_set_xib(sb, xino->file); + if (!err) + err = au_xigen_set(sb, xino->file); + if (!err) + err = au_xino_set_br(sb, xino->file); + inode_unlock(dir); + if (!err) + goto out; /* success */ + + /* reset all */ + AuIOErr("failed creating xino(%d).\n", err); + au_xigen_clr(sb); + xino_clear_xib(sb); + +out: + dput(parent); + return err; +} + +/* ---------------------------------------------------------------------- */ + +/* + * create a xinofile at the default place/path. + */ +struct file *au_xino_def(struct super_block *sb) +{ + struct file *file; + char *page, *p; + struct au_branch *br; + struct super_block *h_sb; + struct path path; + aufs_bindex_t bbot, bindex, bwr; + + br = NULL; + bbot = au_sbbot(sb); + bwr = -1; + for (bindex = 0; bindex <= bbot; bindex++) { + br = au_sbr(sb, bindex); + if (au_br_writable(br->br_perm) + && !au_test_fs_bad_xino(au_br_sb(br))) { + bwr = bindex; + break; + } + } + + if (bwr >= 0) { + file = ERR_PTR(-ENOMEM); + page = (void *)__get_free_page(GFP_NOFS); + if (unlikely(!page)) + goto out; + path.mnt = au_br_mnt(br); + path.dentry = au_h_dptr(sb->s_root, bwr); + p = d_path(&path, page, PATH_MAX - sizeof(AUFS_XINO_FNAME)); + file = (void *)p; + if (!IS_ERR(p)) { + strcat(p, "/" AUFS_XINO_FNAME); + AuDbg("%s\n", p); + file = au_xino_create(sb, p, /*silent*/0); + if (!IS_ERR(file)) + au_xino_brid_set(sb, br->br_id); + } + free_page((unsigned long)page); + } else { + file = au_xino_create(sb, AUFS_XINO_DEFPATH, /*silent*/0); + if (IS_ERR(file)) + goto out; + h_sb = file->f_path.dentry->d_sb; + if (unlikely(au_test_fs_bad_xino(h_sb))) { + pr_err("xino doesn't support %s(%s)\n", + AUFS_XINO_DEFPATH, au_sbtype(h_sb)); + fput(file); + file = ERR_PTR(-EINVAL); + } + if (!IS_ERR(file)) + au_xino_brid_set(sb, -1); + } + +out: + return file; +} + +/* ---------------------------------------------------------------------- */ + +int au_xino_path(struct seq_file *seq, struct file *file) +{ + int err; + + err = au_seq_path(seq, &file->f_path); + if (unlikely(err)) + goto out; + +#define Deleted "\\040(deleted)" + seq->count -= sizeof(Deleted) - 1; + AuDebugOn(memcmp(seq->buf + seq->count, Deleted, + sizeof(Deleted) - 1)); +#undef Deleted + +out: + return err; +} + +/* ---------------------------------------------------------------------- */ + +void au_xinondir_leave(struct super_block *sb, aufs_bindex_t bindex, + ino_t h_ino, int idx) +{ + struct au_xino_file *xino; + + AuDebugOn(!au_opt_test(au_mntflags(sb), XINO)); + xino = &au_sbr(sb, bindex)->br_xino; + AuDebugOn(idx < 0 || xino->xi_nondir.total <= idx); + + spin_lock(&xino->xi_nondir.spin); + AuDebugOn(xino->xi_nondir.array[idx] != h_ino); + xino->xi_nondir.array[idx] = 0; + spin_unlock(&xino->xi_nondir.spin); + wake_up_all(&xino->xi_nondir.wqh); +} + +static int au_xinondir_find(struct au_xino_file *xino, ino_t h_ino) +{ + int found, total, i; + + found = -1; + total = xino->xi_nondir.total; + for (i = 0; i < total; i++) { + if (xino->xi_nondir.array[i] != h_ino) + continue; + found = i; + break; + } + + return found; +} + +static int au_xinondir_expand(struct au_xino_file *xino) +{ + int err, sz; + ino_t *p; + + BUILD_BUG_ON(KMALLOC_MAX_SIZE > INT_MAX); + + err = -ENOMEM; + sz = xino->xi_nondir.total * sizeof(ino_t); + if (unlikely(sz > KMALLOC_MAX_SIZE / 2)) + goto out; + p = au_kzrealloc(xino->xi_nondir.array, sz, sz << 1, GFP_ATOMIC, + /*may_shrink*/0); + if (p) { + xino->xi_nondir.array = p; + xino->xi_nondir.total <<= 1; + AuDbg("xi_nondir.total %d\n", xino->xi_nondir.total); + err = 0; + } + +out: + return err; +} + +int au_xinondir_enter(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino, + int *idx) +{ + int err, found, empty; + struct au_xino_file *xino; + + err = 0; + *idx = -1; + if (!au_opt_test(au_mntflags(sb), XINO)) + goto out; /* no xino */ + + xino = &au_sbr(sb, bindex)->br_xino; + +again: + spin_lock(&xino->xi_nondir.spin); + found = au_xinondir_find(xino, h_ino); + if (found == -1) { + empty = au_xinondir_find(xino, /*h_ino*/0); + if (empty == -1) { + empty = xino->xi_nondir.total; + err = au_xinondir_expand(xino); + if (unlikely(err)) + goto out_unlock; + } + xino->xi_nondir.array[empty] = h_ino; + *idx = empty; + } else { + spin_unlock(&xino->xi_nondir.spin); + wait_event(xino->xi_nondir.wqh, + xino->xi_nondir.array[found] != h_ino); + goto again; + } + +out_unlock: + spin_unlock(&xino->xi_nondir.spin); +out: + return err; +} diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 79226ca8f80..bd0b50ed5fc 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -47,7 +47,11 @@ struct blk_queue_stats; struct blk_stat_callback; #define BLKDEV_MIN_RQ 4 +#ifdef CONFIG_PCK_INTERACTIVE +#define BLKDEV_MAX_RQ 512 +#else #define BLKDEV_MAX_RQ 128 /* Default maximum */ +#endif /* Must be consistent with blk_mq_poll_stats_bkt() */ #define BLK_MQ_POLL_STATS_BKTS 16 @@ -56,7 +60,7 @@ struct blk_stat_callback; * Maximum number of blkcg policies allowed to be registered concurrently. * Defined here to simplify include dependency. */ -#define BLKCG_MAX_POLS 3 +#define BLKCG_MAX_POLS 5 typedef void (rq_end_io_fn)(struct request *, blk_status_t); @@ -129,6 +133,10 @@ typedef __u32 __bitwise req_flags_t; #define RQF_MQ_POLL_SLEPT ((__force req_flags_t)(1 << 20)) /* ->timeout has been called, don't expire again */ #define RQF_TIMED_OUT ((__force req_flags_t)(1 << 21)) +/* DEBUG: rq in bfq-mq dispatch list */ +#define RQF_DISP_LIST ((__force req_flags_t)(1 << 22)) +/* DEBUG: rq had get_rq_private executed on it */ +#define RQF_GOT ((__force req_flags_t)(1 << 23)) /* flags that prevent us from merging requests: */ #define RQF_NOMERGE_FLAGS \ diff --git a/include/linux/file.h b/include/linux/file.h index 279720db984..76e38eade22 100644 --- a/include/linux/file.h +++ b/include/linux/file.h @@ -20,6 +20,7 @@ struct dentry; struct path; extern struct file *alloc_file(const struct path *, fmode_t mode, const struct file_operations *fop); +extern struct file *get_empty_filp(void); static inline void fput_light(struct file *file, int fput_needed) { diff --git a/include/linux/fs.h b/include/linux/fs.h index 805bf22898c..0d0d247f53a 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1273,6 +1273,7 @@ extern void fasync_free(struct fasync_struct *); /* can be called from interrupts */ extern void kill_fasync(struct fasync_struct **, int, int); +extern int setfl(int fd, struct file * filp, unsigned long arg); extern void __f_setown(struct file *filp, struct pid *, enum pid_type, int force); extern int f_setown(struct file *filp, unsigned long arg, int force); extern void f_delown(struct file *filp); @@ -1733,6 +1734,7 @@ struct file_operations { ssize_t (*sendpage) (struct file *, struct page *, int, size_t, loff_t *, int); unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long); int (*check_flags)(int); + int (*setfl)(struct file *, unsigned long); int (*flock) (struct file *, int, struct file_lock *); ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int); ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int); @@ -1803,6 +1805,12 @@ ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector, struct iovec *fast_pointer, struct iovec **ret_pointer); +typedef ssize_t (*vfs_readf_t)(struct file *, char __user *, size_t, loff_t *); +typedef ssize_t (*vfs_writef_t)(struct file *, const char __user *, size_t, + loff_t *); +vfs_readf_t vfs_readf(struct file *file); +vfs_writef_t vfs_writef(struct file *file); + extern ssize_t __vfs_read(struct file *, char __user *, size_t, loff_t *); extern ssize_t vfs_read(struct file *, char __user *, size_t, loff_t *); extern ssize_t vfs_write(struct file *, const char __user *, size_t, loff_t *); @@ -2218,6 +2226,7 @@ extern int current_umask(void); extern void ihold(struct inode * inode); extern void iput(struct inode *); extern int generic_update_time(struct inode *, struct timespec64 *, int); +extern int update_time(struct inode *, struct timespec64 *, int); /* /sys/fs */ extern struct kobject *fs_kobj; @@ -2505,6 +2514,7 @@ static inline bool sb_is_blkdev_sb(struct super_block *sb) return false; } #endif +extern int __sync_filesystem(struct super_block *, int); extern int sync_filesystem(struct super_block *); extern const struct file_operations def_blk_fops; extern const struct file_operations def_chr_fops; diff --git a/include/linux/init_task.h b/include/linux/init_task.h index a454b8aeb93..c2f2b97a012 100644 --- a/include/linux/init_task.h +++ b/include/linux/init_task.h @@ -55,7 +55,11 @@ extern struct cred init_cred; .pid = &init_struct_pid, \ } +#ifdef CONFIG_SCHED_PDS +#define INIT_TASK_COMM "PDS" +#else #define INIT_TASK_COMM "swapper" +#endif /* CONFIG_SCHED_PDS */ /* Attach to the init_task data structure for proper alignment */ #ifdef CONFIG_ARCH_TASK_STRUCT_ON_STACK diff --git a/include/linux/ioprio.h b/include/linux/ioprio.h index 9e30ed6443d..7d6e7e7cdf9 100644 --- a/include/linux/ioprio.h +++ b/include/linux/ioprio.h @@ -53,6 +53,8 @@ enum { */ static inline int task_nice_ioprio(struct task_struct *task) { + if (iso_task(task)) + return 0; return (task_nice(task) + 20) / 5; } diff --git a/include/linux/jiffies.h b/include/linux/jiffies.h index a27cf665232..33ee2def2ee 100644 --- a/include/linux/jiffies.h +++ b/include/linux/jiffies.h @@ -171,7 +171,7 @@ static inline u64 get_jiffies_64(void) * Have the 32 bit jiffies value wrap 5 minutes after boot * so jiffies wrap bugs show up earlier. */ -#define INITIAL_JIFFIES ((unsigned long)(unsigned int) (-300*HZ)) +#define INITIAL_JIFFIES ((unsigned long)(unsigned int) (-10*HZ)) /* * Change timeval to jiffies, trying to avoid the diff --git a/include/linux/ksm.h b/include/linux/ksm.h index 161e8164abc..fb6e373f72a 100644 --- a/include/linux/ksm.h +++ b/include/linux/ksm.h @@ -21,21 +21,6 @@ struct mem_cgroup; #ifdef CONFIG_KSM int ksm_madvise(struct vm_area_struct *vma, unsigned long start, unsigned long end, int advice, unsigned long *vm_flags); -int __ksm_enter(struct mm_struct *mm); -void __ksm_exit(struct mm_struct *mm); - -static inline int ksm_fork(struct mm_struct *mm, struct mm_struct *oldmm) -{ - if (test_bit(MMF_VM_MERGEABLE, &oldmm->flags)) - return __ksm_enter(mm); - return 0; -} - -static inline void ksm_exit(struct mm_struct *mm) -{ - if (test_bit(MMF_VM_MERGEABLE, &mm->flags)) - __ksm_exit(mm); -} /* * When do_swap_page() first faults in from swap what used to be a KSM page, @@ -54,6 +39,33 @@ struct page *ksm_might_need_to_copy(struct page *page, void rmap_walk_ksm(struct page *page, struct rmap_walk_control *rwc); void ksm_migrate_page(struct page *newpage, struct page *oldpage); +#ifdef CONFIG_KSM_LEGACY +int __ksm_enter(struct mm_struct *mm); +void __ksm_exit(struct mm_struct *mm); +static inline int ksm_fork(struct mm_struct *mm, struct mm_struct *oldmm) +{ + if (test_bit(MMF_VM_MERGEABLE, &oldmm->flags)) + return __ksm_enter(mm); + return 0; +} + +static inline void ksm_exit(struct mm_struct *mm) +{ + if (test_bit(MMF_VM_MERGEABLE, &mm->flags)) + __ksm_exit(mm); +} + +#elif defined(CONFIG_UKSM) +static inline int ksm_fork(struct mm_struct *mm, struct mm_struct *oldmm) +{ + return 0; +} + +static inline void ksm_exit(struct mm_struct *mm) +{ +} +#endif /* !CONFIG_UKSM */ + #else /* !CONFIG_KSM */ static inline int ksm_fork(struct mm_struct *mm, struct mm_struct *oldmm) @@ -89,4 +101,6 @@ static inline void ksm_migrate_page(struct page *newpage, struct page *oldpage) #endif /* CONFIG_MMU */ #endif /* !CONFIG_KSM */ +#include + #endif /* __LINUX_KSM_H */ diff --git a/include/linux/linux_logo.h b/include/linux/linux_logo.h index d4d5b93efe8..0a63e8c0959 100644 --- a/include/linux/linux_logo.h +++ b/include/linux/linux_logo.h @@ -36,6 +36,18 @@ struct linux_logo { extern const struct linux_logo logo_linux_mono; extern const struct linux_logo logo_linux_vga16; extern const struct linux_logo logo_linux_clut224; +extern const struct linux_logo logo_zen_clut224; +extern const struct linux_logo logo_oldzen_clut224; +extern const struct linux_logo logo_arch_clut224; +extern const struct linux_logo logo_gentoo_clut224; +extern const struct linux_logo logo_exherbo_clut224; +extern const struct linux_logo logo_slackware_clut224; +extern const struct linux_logo logo_debian_clut224; +extern const struct linux_logo logo_fedorasimple_clut224; +extern const struct linux_logo logo_fedoraglossy_clut224; +extern const struct linux_logo logo_tits_clut224; +extern const struct linux_logo logo_bsd_clut224; +extern const struct linux_logo logo_fbsd_clut224; extern const struct linux_logo logo_dec_clut224; extern const struct linux_logo logo_mac_clut224; extern const struct linux_logo logo_parisc_clut224; diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index 6fc77d4dbdc..27e76f0c0b4 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -313,6 +313,8 @@ static inline int lockdep_match_key(struct lockdep_map *lock, return lock->key == key; } +struct lock_class *lockdep_hlock_class(struct held_lock *hlock); + /* * Acquire a lock. * @@ -439,6 +441,7 @@ struct lockdep_map { }; #define lockdep_depth(tsk) (0) +#define lockdep_is_held(lock) (1) #define lockdep_is_held_type(l, r) (1) #define lockdep_assert_held(l) do { (void)(l); } while (0) diff --git a/include/linux/mm.h b/include/linux/mm.h index 68a5121694e..d7dd986003a 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1448,6 +1448,28 @@ static inline void unmap_shared_mapping_range(struct address_space *mapping, unmap_mapping_range(mapping, holebegin, holelen, 0); } +extern void vma_do_file_update_time(struct vm_area_struct *, const char[], int); +extern struct file *vma_do_pr_or_file(struct vm_area_struct *, const char[], + int); +extern void vma_do_get_file(struct vm_area_struct *, const char[], int); +extern void vma_do_fput(struct vm_area_struct *, const char[], int); + +#define vma_file_update_time(vma) vma_do_file_update_time(vma, __func__, \ + __LINE__) +#define vma_pr_or_file(vma) vma_do_pr_or_file(vma, __func__, \ + __LINE__) +#define vma_get_file(vma) vma_do_get_file(vma, __func__, __LINE__) +#define vma_fput(vma) vma_do_fput(vma, __func__, __LINE__) + +#ifndef CONFIG_MMU +extern struct file *vmr_do_pr_or_file(struct vm_region *, const char[], int); +extern void vmr_do_fput(struct vm_region *, const char[], int); + +#define vmr_pr_or_file(region) vmr_do_pr_or_file(region, __func__, \ + __LINE__) +#define vmr_fput(region) vmr_do_fput(region, __func__, __LINE__) +#endif /* !CONFIG_MMU */ + extern int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int len, unsigned int gup_flags); extern int access_remote_vm(struct mm_struct *mm, unsigned long addr, diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 99ce070e7dc..c56559f097c 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -236,6 +236,7 @@ struct vm_region { unsigned long vm_top; /* region allocated to here */ unsigned long vm_pgoff; /* the offset in vm_file corresponding to vm_start */ struct file *vm_file; /* the backing file or NULL */ + struct file *vm_prfile; /* the virtual backing file or NULL */ int vm_usage; /* region usage count (access under nommu_region_sem) */ bool vm_icache_flushed : 1; /* true if the icache has been flushed for @@ -310,6 +311,7 @@ struct vm_area_struct { unsigned long vm_pgoff; /* Offset (within vm_file) in PAGE_SIZE units */ struct file * vm_file; /* File we map to (can be NULL). */ + struct file *vm_prfile; /* shadow of vm_file */ void * vm_private_data; /* was vm_pte (shared mem) */ atomic_long_t swap_readahead_info; @@ -320,6 +322,9 @@ struct vm_area_struct { struct mempolicy *vm_policy; /* NUMA policy for the VMA */ #endif struct vm_userfaultfd_ctx vm_userfaultfd_ctx; +#ifdef CONFIG_UKSM + struct vma_slot *uksm_vma_slot; +#endif } __randomize_layout; struct core_thread { diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 32699b2dc52..5ca9e345c52 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -148,6 +148,9 @@ enum zone_stat_item { NR_ZSPAGES, /* allocated in zsmalloc */ #endif NR_FREE_CMA_PAGES, +#ifdef CONFIG_UKSM + NR_UKSM_ZERO_PAGES, +#endif NR_VM_ZONE_STAT_ITEMS }; enum node_stat_item { @@ -865,7 +868,7 @@ static inline int is_highmem_idx(enum zone_type idx) } /** - * is_highmem - helper function to quickly check if a struct zone is a + * is_highmem - helper function to quickly check if a struct zone is a * highmem zone or not. This is an attempt to keep references * to ZONE_{DMA/NORMAL/HIGHMEM/etc} in general code to a minimum. * @zone - pointer to struct zone variable diff --git a/include/linux/mnt_namespace.h b/include/linux/mnt_namespace.h index 35942084cd4..24f5fd1a789 100644 --- a/include/linux/mnt_namespace.h +++ b/include/linux/mnt_namespace.h @@ -6,11 +6,14 @@ struct mnt_namespace; struct fs_struct; struct user_namespace; +struct vfsmount; extern struct mnt_namespace *copy_mnt_ns(unsigned long, struct mnt_namespace *, struct user_namespace *, struct fs_struct *); extern void put_mnt_ns(struct mnt_namespace *ns); +extern int is_current_mnt_ns(struct vfsmount *mnt); + extern const struct file_operations proc_mounts_operations; extern const struct file_operations proc_mountinfo_operations; extern const struct file_operations proc_mountstats_operations; diff --git a/include/linux/sched.h b/include/linux/sched.h index 43731fe51c9..9beaa0068d6 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -28,6 +28,7 @@ #include #include #include +#include /* task_struct member predeclarations (sorted alphabetically): */ struct audit_context; @@ -613,9 +614,13 @@ struct task_struct { unsigned int flags; unsigned int ptrace; -#ifdef CONFIG_SMP +#if defined(CONFIG_SMP) && !defined(CONFIG_SCHED_PDS) struct llist_node wake_entry; +#endif +#if defined(CONFIG_SMP) || defined(CONFIG_SCHED_PDS) int on_cpu; +#endif +#ifdef CONFIG_SMP #ifdef CONFIG_THREAD_INFO_IN_TASK /* Current CPU: */ unsigned int cpu; @@ -624,6 +629,7 @@ struct task_struct { unsigned long wakee_flip_decay_ts; struct task_struct *last_wakee; +#ifndef CONFIG_SCHED_PDS /* * recent_used_cpu is initially set as the last CPU used by a task * that wakes affine another task. Waker/wakee relationships can @@ -632,6 +638,7 @@ struct task_struct { * used CPU that may be idle. */ int recent_used_cpu; +#endif /* CONFIG_SCHED_PDS */ int wake_cpu; #endif int on_rq; @@ -641,13 +648,27 @@ struct task_struct { int normal_prio; unsigned int rt_priority; +#ifdef CONFIG_SCHED_PDS + int time_slice; + u64 deadline; + /* skip list level */ + int sl_level; + /* skip list node */ + struct skiplist_node sl_node; + /* 8bits prio and 56bits deadline for quick processing */ + u64 priodl; + u64 last_ran; + /* sched_clock time spent running */ + u64 sched_time; +#else /* CONFIG_SCHED_PDS */ const struct sched_class *sched_class; struct sched_entity se; struct sched_rt_entity rt; + struct sched_dl_entity dl; +#endif #ifdef CONFIG_CGROUP_SCHED struct task_group *sched_task_group; #endif - struct sched_dl_entity dl; #ifdef CONFIG_PREEMPT_NOTIFIERS /* List of struct preempt_notifier: */ @@ -1197,6 +1218,34 @@ struct task_struct { */ }; +#ifdef CONFIG_SCHED_PDS +void cpu_scaling(int cpu); +void cpu_nonscaling(int cpu); +#define tsk_seruntime(t) ((t)->sched_time) +/* replace the uncertian rt_timeout with 0UL */ +#define tsk_rttimeout(t) (0UL) + +#define is_idle_policy(policy) ((policy) == SCHED_IDLE) +#define idleprio_task(p) unlikely(is_idle_policy((p)->policy)) + +#define is_iso_policy(policy) ((policy) == SCHED_ISO) +#define iso_task(p) unlikely(is_iso_policy((p)->policy)) + +#else /* CFS */ +extern int runqueue_is_locked(int cpu); +static inline void cpu_scaling(int cpu) +{ +} + +static inline void cpu_nonscaling(int cpu) +{ +} +#define tsk_seruntime(t) ((t)->se.sum_exec_runtime) +#define tsk_rttimeout(t) ((t)->rt.timeout) + +#define iso_task(p) (false) +#endif /* CONFIG_SCHED_PDS */ + static inline struct pid *task_pid(struct task_struct *task) { return task->pids[PIDTYPE_PID].pid; diff --git a/include/linux/sched/deadline.h b/include/linux/sched/deadline.h index 0cb034331cb..eb2d51ef8af 100644 --- a/include/linux/sched/deadline.h +++ b/include/linux/sched/deadline.h @@ -1,5 +1,22 @@ /* SPDX-License-Identifier: GPL-2.0 */ +#ifdef CONFIG_SCHED_PDS + +#define __tsk_deadline(p) ((p)->deadline) + +static inline int dl_prio(int prio) +{ + return 1; +} + +static inline int dl_task(struct task_struct *p) +{ + return 1; +} +#else + +#define __tsk_deadline(p) ((p)->dl.deadline) + /* * SCHED_DEADLINE tasks has negative priorities, reflecting * the fact that any of them has higher prio than RT and @@ -19,6 +36,7 @@ static inline int dl_task(struct task_struct *p) { return dl_prio(p->prio); } +#endif /* CONFIG_SCHED_PDS */ static inline bool dl_time_before(u64 a, u64 b) { diff --git a/include/linux/sched/nohz.h b/include/linux/sched/nohz.h index b36f4cf3811..46bbab702a3 100644 --- a/include/linux/sched/nohz.h +++ b/include/linux/sched/nohz.h @@ -6,7 +6,7 @@ * This is the interface between the scheduler and nohz/dynticks: */ -#if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON) +#if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON) && !defined(CONFIG_SCHED_PDS) extern void cpu_load_update_nohz_start(void); extern void cpu_load_update_nohz_stop(void); #else diff --git a/include/linux/sched/prio.h b/include/linux/sched/prio.h index 7d64feafc40..abd72fb049c 100644 --- a/include/linux/sched/prio.h +++ b/include/linux/sched/prio.h @@ -20,8 +20,20 @@ */ #define MAX_USER_RT_PRIO 100 + +#ifdef CONFIG_SCHED_PDS +/* Note different MAX_RT_PRIO */ +#define MAX_RT_PRIO (MAX_USER_RT_PRIO + 1) + +#define ISO_PRIO (MAX_RT_PRIO) +#define NORMAL_PRIO (MAX_RT_PRIO + 1) +#define IDLE_PRIO (MAX_RT_PRIO + 2) +#define PRIO_LIMIT ((IDLE_PRIO) + 1) +#else /* CONFIG_SCHED_PDS */ #define MAX_RT_PRIO MAX_USER_RT_PRIO +#endif /* CONFIG_SCHED_PDS */ + #define MAX_PRIO (MAX_RT_PRIO + NICE_WIDTH) #define DEFAULT_PRIO (MAX_RT_PRIO + NICE_WIDTH / 2) diff --git a/include/linux/sched/rt.h b/include/linux/sched/rt.h index e5af028c08b..f79e98fb006 100644 --- a/include/linux/sched/rt.h +++ b/include/linux/sched/rt.h @@ -24,7 +24,11 @@ static inline bool task_is_realtime(struct task_struct *tsk) if (policy == SCHED_FIFO || policy == SCHED_RR) return true; +#ifdef CONFIG_SCHED_PDS + if (policy == SCHED_ISO) +#else if (policy == SCHED_DEADLINE) +#endif return true; return false; } diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h index 108ede99e53..6dd5fc101b7 100644 --- a/include/linux/sched/task.h +++ b/include/linux/sched/task.h @@ -80,7 +80,7 @@ extern long kernel_wait4(pid_t, int __user *, int, struct rusage *); extern void free_task(struct task_struct *tsk); /* sched_exec is called by processes performing an exec */ -#ifdef CONFIG_SMP +#if defined(CONFIG_SMP) && !defined(CONFIG_SCHED_PDS) extern void sched_exec(void); #else #define sched_exec() {} diff --git a/include/linux/skip_list.h b/include/linux/skip_list.h new file mode 100644 index 00000000000..713fedd8034 --- /dev/null +++ b/include/linux/skip_list.h @@ -0,0 +1,177 @@ +/* + Copyright (C) 2016 Alfred Chen. + + Code based on Con Kolivas's skip list implementation for BFS, and + which is based on example originally by William Pugh. + +Skip Lists are a probabilistic alternative to balanced trees, as +described in the June 1990 issue of CACM and were invented by +William Pugh in 1987. + +A couple of comments about this implementation: + +This file only provides a infrastructure of skip list. + +skiplist_node is embedded into container data structure, to get rid the +dependency of kmalloc/kfree operation in scheduler code. + +A customized search function should be defined using DEFINE_SKIPLIST_INSERT +macro and be used for skip list insert operation. + +Random Level is also not defined in this file, instead, it should be customized +implemented and set to node->level then pass to the customized skiplist_insert +function. + +Levels start at zero and go up to (NUM_SKIPLIST_LEVEL -1) + +NUM_SKIPLIST_LEVEL in this implementation is 8 instead of origin 16, +considering that there will be 256 entries to enable the top level when using +random level p=0.5, and that number is more than enough for a run queue usage +in a scheduler usage. And it also help to reduce the memory usage of the +embedded skip list node in task_struct to about 50%. + +The insertion routine has been implemented so as to use the +dirty hack described in the CACM paper: if a random level is +generated that is more than the current maximum level, the +current maximum level plus one is used instead. + +BFS Notes: In this implementation of skiplists, there are bidirectional +next/prev pointers and the insert function returns a pointer to the actual +node the value is stored. The key here is chosen by the scheduler so as to +sort tasks according to the priority list requirements and is no longer used +by the scheduler after insertion. The scheduler lookup, however, occurs in +O(1) time because it is always the first item in the level 0 linked list. +Since the task struct stores a copy of the node pointer upon skiplist_insert, +it can also remove it much faster than the original implementation with the +aid of prev<->next pointer manipulation and no searching. +*/ +#ifndef _LINUX_SKIP_LIST_H +#define _LINUX_SKIP_LIST_H + +#include + +#define NUM_SKIPLIST_LEVEL (8) + +struct skiplist_node { + int level; /* Levels in this node */ + struct skiplist_node *next[NUM_SKIPLIST_LEVEL]; + struct skiplist_node *prev[NUM_SKIPLIST_LEVEL]; +}; + +#define SKIPLIST_NODE_INIT(name) { 0,\ + {&name, &name, &name, &name,\ + &name, &name, &name, &name},\ + {&name, &name, &name, &name,\ + &name, &name, &name, &name},\ + } + +static inline void INIT_SKIPLIST_NODE(struct skiplist_node *node) +{ + /* only level 0 ->next matters in skiplist_empty()*/ + WRITE_ONCE(node->next[0], node); +} + +/** + * FULL_INIT_SKIPLIST_NODE -- fully init a skiplist_node, expecially for header + * @node: the skip list node to be inited. + */ +static inline void FULL_INIT_SKIPLIST_NODE(struct skiplist_node *node) +{ + int i; + + node->level = 0; + for (i = 0; i < NUM_SKIPLIST_LEVEL; i++) { + WRITE_ONCE(node->next[i], node); + node->prev[i] = node; + } +} + +/** + * skiplist_empty - test whether a skip list is empty + * @head: the skip list to test. + */ +static inline int skiplist_empty(const struct skiplist_node *head) +{ + return READ_ONCE(head->next[0]) == head; +} + +/** + * skiplist_entry - get the struct for this entry + * @ptr: the &struct skiplist_node pointer. + * @type: the type of the struct this is embedded in. + * @member: the name of the skiplist_node within the struct. + */ +#define skiplist_entry(ptr, type, member) \ + container_of(ptr, type, member) + +/** + * DEFINE_SKIPLIST_INSERT_FUNC -- macro to define a customized skip list insert + * function, which takes two parameters, first one is the header node of the + * skip list, second one is the skip list node to be inserted + * @func_name: the customized skip list insert function name + * @search_func: the search function to be used, which takes two parameters, + * 1st one is the itrator of skiplist_node in the list, the 2nd is the skip list + * node to be inserted, the function should return true if search should be + * continued, otherwise return false. + * Returns 1 if @node is inserted as the first item of skip list at level zero, + * otherwise 0 + */ +#define DEFINE_SKIPLIST_INSERT_FUNC(func_name, search_func)\ +static inline int func_name(struct skiplist_node *head, struct skiplist_node *node)\ +{\ + struct skiplist_node *update[NUM_SKIPLIST_LEVEL];\ + struct skiplist_node *p, *q;\ + int k = head->level;\ +\ + p = head;\ + do {\ + while (q = p->next[k], q != head && search_func(q, node))\ + p = q;\ + update[k] = p;\ + } while (--k >= 0);\ +\ + k = node->level;\ + if (unlikely(k > head->level)) {\ + node->level = k = ++head->level;\ + update[k] = head;\ + }\ +\ + do {\ + p = update[k];\ + q = p->next[k];\ + node->next[k] = q;\ + p->next[k] = node;\ + node->prev[k] = p;\ + q->prev[k] = node;\ + } while (--k >= 0);\ +\ + return (p == head);\ +} + +/** + * skiplist_del_init -- delete skip list node from a skip list and reset it's + * init state + * @head: the header node of the skip list to be deleted from. + * @node: the skip list node to be deleted, the caller need to ensure @node is + * in skip list which @head represent. + * Returns 1 if @node is the first item of skip level at level zero, otherwise 0 + */ +static inline int +skiplist_del_init(struct skiplist_node *head, struct skiplist_node *node) +{ + int l, m = node->level; + + for (l = 0; l <= m; l++) { + node->prev[l]->next[l] = node->next[l]; + node->next[l]->prev[l] = node->prev[l]; + } + if (m == head->level && m > 0) { + while (head->next[m] == head && m > 0) + m--; + head->level = m; + } + INIT_SKIPLIST_NODE(node); + + return (node->prev[0] == head); +} +#endif /* _LINUX_SKIP_LIST_H */ diff --git a/include/linux/splice.h b/include/linux/splice.h index 74b4911ac16..19789fbea56 100644 --- a/include/linux/splice.h +++ b/include/linux/splice.h @@ -87,4 +87,10 @@ extern void splice_shrink_spd(struct splice_pipe_desc *); extern const struct pipe_buf_operations page_cache_pipe_buf_ops; extern const struct pipe_buf_operations default_pipe_buf_ops; + +extern long do_splice_from(struct pipe_inode_info *pipe, struct file *out, + loff_t *ppos, size_t len, unsigned int flags); +extern long do_splice_to(struct file *in, loff_t *ppos, + struct pipe_inode_info *pipe, size_t len, + unsigned int flags); #endif diff --git a/include/linux/sradix-tree.h b/include/linux/sradix-tree.h new file mode 100644 index 00000000000..d71edba6b63 --- /dev/null +++ b/include/linux/sradix-tree.h @@ -0,0 +1,77 @@ +#ifndef _LINUX_SRADIX_TREE_H +#define _LINUX_SRADIX_TREE_H + + +#define INIT_SRADIX_TREE(root, mask) \ +do { \ + (root)->height = 0; \ + (root)->gfp_mask = (mask); \ + (root)->rnode = NULL; \ +} while (0) + +#define ULONG_BITS (sizeof(unsigned long) * 8) +#define SRADIX_TREE_INDEX_BITS (8 /* CHAR_BIT */ * sizeof(unsigned long)) +//#define SRADIX_TREE_MAP_SHIFT 6 +//#define SRADIX_TREE_MAP_SIZE (1UL << SRADIX_TREE_MAP_SHIFT) +//#define SRADIX_TREE_MAP_MASK (SRADIX_TREE_MAP_SIZE-1) + +struct sradix_tree_node { + unsigned int height; /* Height from the bottom */ + unsigned int count; + unsigned int fulls; /* Number of full sublevel trees */ + struct sradix_tree_node *parent; + void *stores[0]; +}; + +/* A simple radix tree implementation */ +struct sradix_tree_root { + unsigned int height; + struct sradix_tree_node *rnode; + + /* Where found to have available empty stores in its sublevels */ + struct sradix_tree_node *enter_node; + unsigned int shift; + unsigned int stores_size; + unsigned int mask; + unsigned long min; /* The first hole index */ + unsigned long num; + //unsigned long *height_to_maxindex; + + /* How the node is allocated and freed. */ + struct sradix_tree_node *(*alloc)(void); + void (*free)(struct sradix_tree_node *node); + + /* When a new node is added and removed */ + void (*extend)(struct sradix_tree_node *parent, struct sradix_tree_node *child); + void (*assign)(struct sradix_tree_node *node, unsigned int index, void *item); + void (*rm)(struct sradix_tree_node *node, unsigned int offset); +}; + +struct sradix_tree_path { + struct sradix_tree_node *node; + int offset; +}; + +static inline +void init_sradix_tree_root(struct sradix_tree_root *root, unsigned long shift) +{ + root->height = 0; + root->rnode = NULL; + root->shift = shift; + root->stores_size = 1UL << shift; + root->mask = root->stores_size - 1; +} + + +extern void *sradix_tree_next(struct sradix_tree_root *root, + struct sradix_tree_node *node, unsigned long index, + int (*iter)(void *, unsigned long)); + +extern int sradix_tree_enter(struct sradix_tree_root *root, void **item, int num); + +extern void sradix_tree_delete_from_leaf(struct sradix_tree_root *root, + struct sradix_tree_node *node, unsigned long index); + +extern void *sradix_tree_lookup(struct sradix_tree_root *root, unsigned long index); + +#endif /* _LINUX_SRADIX_TREE_H */ diff --git a/include/linux/thinkpad_ec.h b/include/linux/thinkpad_ec.h new file mode 100644 index 00000000000..1b80d7ee549 --- /dev/null +++ b/include/linux/thinkpad_ec.h @@ -0,0 +1,47 @@ +/* + * thinkpad_ec.h - interface to ThinkPad embedded controller LPC3 functions + * + * Copyright (C) 2005 Shem Multinymous + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef _THINKPAD_EC_H +#define _THINKPAD_EC_H + +#ifdef __KERNEL__ + +#define TP_CONTROLLER_ROW_LEN 16 + +/* EC transactions input and output (possibly partial) vectors of 16 bytes. */ +struct thinkpad_ec_row { + u16 mask; /* bitmap of which entries of val[] are meaningful */ + u8 val[TP_CONTROLLER_ROW_LEN]; +}; + +extern int __must_check thinkpad_ec_lock(void); +extern int __must_check thinkpad_ec_try_lock(void); +extern void thinkpad_ec_unlock(void); + +extern int thinkpad_ec_read_row(const struct thinkpad_ec_row *args, + struct thinkpad_ec_row *data); +extern int thinkpad_ec_try_read_row(const struct thinkpad_ec_row *args, + struct thinkpad_ec_row *mask); +extern int thinkpad_ec_prefetch_row(const struct thinkpad_ec_row *args); +extern void thinkpad_ec_invalidate(void); + + +#endif /* __KERNEL */ +#endif /* _THINKPAD_EC_H */ diff --git a/include/linux/uksm.h b/include/linux/uksm.h new file mode 100644 index 00000000000..bb8651f534f --- /dev/null +++ b/include/linux/uksm.h @@ -0,0 +1,149 @@ +#ifndef __LINUX_UKSM_H +#define __LINUX_UKSM_H +/* + * Memory merging support. + * + * This code enables dynamic sharing of identical pages found in different + * memory areas, even if they are not shared by fork(). + */ + +/* if !CONFIG_UKSM this file should not be compiled at all. */ +#ifdef CONFIG_UKSM + +#include +#include +#include +#include +#include + +extern unsigned long zero_pfn __read_mostly; +extern unsigned long uksm_zero_pfn __read_mostly; +extern struct page *empty_uksm_zero_page; + +/* must be done before linked to mm */ +extern void uksm_vma_add_new(struct vm_area_struct *vma); +extern void uksm_remove_vma(struct vm_area_struct *vma); + +#define UKSM_SLOT_NEED_SORT (1 << 0) +#define UKSM_SLOT_NEED_RERAND (1 << 1) +#define UKSM_SLOT_SCANNED (1 << 2) /* It's scanned in this round */ +#define UKSM_SLOT_FUL_SCANNED (1 << 3) +#define UKSM_SLOT_IN_UKSM (1 << 4) + +struct vma_slot { + struct sradix_tree_node *snode; + unsigned long sindex; + + struct list_head slot_list; + unsigned long fully_scanned_round; + unsigned long dedup_num; + unsigned long pages_scanned; + unsigned long this_sampled; + unsigned long last_scanned; + unsigned long pages_to_scan; + struct scan_rung *rung; + struct page **rmap_list_pool; + unsigned int *pool_counts; + unsigned long pool_size; + struct vm_area_struct *vma; + struct mm_struct *mm; + unsigned long ctime_j; + unsigned long pages; + unsigned long flags; + unsigned long pages_cowed; /* pages cowed this round */ + unsigned long pages_merged; /* pages merged this round */ + unsigned long pages_bemerged; + + /* when it has page merged in this eval round */ + struct list_head dedup_list; +}; + +static inline void uksm_unmap_zero_page(pte_t pte) +{ + if (pte_pfn(pte) == uksm_zero_pfn) + __dec_zone_page_state(empty_uksm_zero_page, NR_UKSM_ZERO_PAGES); +} + +static inline void uksm_map_zero_page(pte_t pte) +{ + if (pte_pfn(pte) == uksm_zero_pfn) + __inc_zone_page_state(empty_uksm_zero_page, NR_UKSM_ZERO_PAGES); +} + +static inline void uksm_cow_page(struct vm_area_struct *vma, struct page *page) +{ + if (vma->uksm_vma_slot && PageKsm(page)) + vma->uksm_vma_slot->pages_cowed++; +} + +static inline void uksm_cow_pte(struct vm_area_struct *vma, pte_t pte) +{ + if (vma->uksm_vma_slot && pte_pfn(pte) == uksm_zero_pfn) + vma->uksm_vma_slot->pages_cowed++; +} + +static inline int uksm_flags_can_scan(unsigned long vm_flags) +{ +#ifdef VM_SAO + if (vm_flags & VM_SAO) + return 0; +#endif + + return !(vm_flags & (VM_PFNMAP | VM_IO | VM_DONTEXPAND | + VM_HUGETLB | VM_MIXEDMAP | VM_SHARED + | VM_MAYSHARE | VM_GROWSUP | VM_GROWSDOWN)); +} + +static inline void uksm_vm_flags_mod(unsigned long *vm_flags_p) +{ + if (uksm_flags_can_scan(*vm_flags_p)) + *vm_flags_p |= VM_MERGEABLE; +} + +/* + * Just a wrapper for BUG_ON for where ksm_zeropage must not be. TODO: it will + * be removed when uksm zero page patch is stable enough. + */ +static inline void uksm_bugon_zeropage(pte_t pte) +{ + BUG_ON(pte_pfn(pte) == uksm_zero_pfn); +} +#else +static inline void uksm_vma_add_new(struct vm_area_struct *vma) +{ +} + +static inline void uksm_remove_vma(struct vm_area_struct *vma) +{ +} + +static inline void uksm_unmap_zero_page(pte_t pte) +{ +} + +static inline void uksm_map_zero_page(pte_t pte) +{ +} + +static inline void uksm_cow_page(struct vm_area_struct *vma, struct page *page) +{ +} + +static inline void uksm_cow_pte(struct vm_area_struct *vma, pte_t pte) +{ +} + +static inline int uksm_flags_can_scan(unsigned long vm_flags) +{ + return 0; +} + +static inline void uksm_vm_flags_mod(unsigned long *vm_flags_p) +{ +} + +static inline void uksm_bugon_zeropage(pte_t pte) +{ +} +#endif /* !CONFIG_UKSM */ +#endif /* __LINUX_UKSM_H */ diff --git a/include/trace/events/fs.h b/include/trace/events/fs.h new file mode 100644 index 00000000000..fb634b74adf --- /dev/null +++ b/include/trace/events/fs.h @@ -0,0 +1,53 @@ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM fs + +#if !defined(_TRACE_FS_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_FS_H + +#include +#include + +TRACE_EVENT(do_sys_open, + + TP_PROTO(const char *filename, int flags, int mode), + + TP_ARGS(filename, flags, mode), + + TP_STRUCT__entry( + __string( filename, filename ) + __field( int, flags ) + __field( int, mode ) + ), + + TP_fast_assign( + __assign_str(filename, filename); + __entry->flags = flags; + __entry->mode = mode; + ), + + TP_printk("\"%s\" %x %o", + __get_str(filename), __entry->flags, __entry->mode) +); + +TRACE_EVENT(open_exec, + + TP_PROTO(const char *filename), + + TP_ARGS(filename), + + TP_STRUCT__entry( + __string( filename, filename ) + ), + + TP_fast_assign( + __assign_str(filename, filename); + ), + + TP_printk("\"%s\"", + __get_str(filename)) +); + +#endif /* _TRACE_FS_H */ + +/* This part must be outside protection */ +#include diff --git a/include/uapi/linux/aufs_type.h b/include/uapi/linux/aufs_type.h new file mode 100644 index 00000000000..15c3eafa725 --- /dev/null +++ b/include/uapi/linux/aufs_type.h @@ -0,0 +1,448 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005-2018 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#ifndef __AUFS_TYPE_H__ +#define __AUFS_TYPE_H__ + +#define AUFS_NAME "aufs" + +#ifdef __KERNEL__ +/* + * define it before including all other headers. + * sched.h may use pr_* macros before defining "current", so define the + * no-current version first, and re-define later. + */ +#define pr_fmt(fmt) AUFS_NAME " %s:%d: " fmt, __func__, __LINE__ +#include +#undef pr_fmt +#define pr_fmt(fmt) \ + AUFS_NAME " %s:%d:%.*s[%d]: " fmt, __func__, __LINE__, \ + (int)sizeof(current->comm), current->comm, current->pid +#else +#include +#include +#endif /* __KERNEL__ */ + +#include + +#define AUFS_VERSION "4.18-20180820" + +/* todo? move this to linux-2.6.19/include/magic.h */ +#define AUFS_SUPER_MAGIC ('a' << 24 | 'u' << 16 | 'f' << 8 | 's') + +/* ---------------------------------------------------------------------- */ + +#ifdef CONFIG_AUFS_BRANCH_MAX_127 +typedef int8_t aufs_bindex_t; +#define AUFS_BRANCH_MAX 127 +#else +typedef int16_t aufs_bindex_t; +#ifdef CONFIG_AUFS_BRANCH_MAX_511 +#define AUFS_BRANCH_MAX 511 +#elif defined(CONFIG_AUFS_BRANCH_MAX_1023) +#define AUFS_BRANCH_MAX 1023 +#elif defined(CONFIG_AUFS_BRANCH_MAX_32767) +#define AUFS_BRANCH_MAX 32767 +#endif +#endif + +#ifdef __KERNEL__ +#ifndef AUFS_BRANCH_MAX +#error unknown CONFIG_AUFS_BRANCH_MAX value +#endif +#endif /* __KERNEL__ */ + +/* ---------------------------------------------------------------------- */ + +#define AUFS_FSTYPE AUFS_NAME + +#define AUFS_ROOT_INO 2 +#define AUFS_FIRST_INO 11 + +#define AUFS_WH_PFX ".wh." +#define AUFS_WH_PFX_LEN ((int)sizeof(AUFS_WH_PFX) - 1) +#define AUFS_WH_TMP_LEN 4 +/* a limit for rmdir/rename a dir and copyup */ +#define AUFS_MAX_NAMELEN (NAME_MAX \ + - AUFS_WH_PFX_LEN * 2 /* doubly whiteouted */\ + - 1 /* dot */\ + - AUFS_WH_TMP_LEN) /* hex */ +#define AUFS_XINO_FNAME "." AUFS_NAME ".xino" +#define AUFS_XINO_DEFPATH "/tmp/" AUFS_XINO_FNAME +#define AUFS_XINO_DEF_SEC 30 /* seconds */ +#define AUFS_XINO_DEF_TRUNC 45 /* percentage */ +#define AUFS_DIRWH_DEF 3 +#define AUFS_RDCACHE_DEF 10 /* seconds */ +#define AUFS_RDCACHE_MAX 3600 /* seconds */ +#define AUFS_RDBLK_DEF 512 /* bytes */ +#define AUFS_RDHASH_DEF 32 +#define AUFS_WKQ_NAME AUFS_NAME "d" +#define AUFS_MFS_DEF_SEC 30 /* seconds */ +#define AUFS_MFS_MAX_SEC 3600 /* seconds */ +#define AUFS_FHSM_CACHE_DEF_SEC 30 /* seconds */ +#define AUFS_PLINK_WARN 50 /* number of plinks in a single bucket */ + +/* pseudo-link maintenace under /proc */ +#define AUFS_PLINK_MAINT_NAME "plink_maint" +#define AUFS_PLINK_MAINT_DIR "fs/" AUFS_NAME +#define AUFS_PLINK_MAINT_PATH AUFS_PLINK_MAINT_DIR "/" AUFS_PLINK_MAINT_NAME + +/* dirren, renamed dir */ +#define AUFS_DR_INFO_PFX AUFS_WH_PFX ".dr." +#define AUFS_DR_BRHINO_NAME AUFS_WH_PFX "hino" +/* whiteouted doubly */ +#define AUFS_WH_DR_INFO_PFX AUFS_WH_PFX AUFS_DR_INFO_PFX +#define AUFS_WH_DR_BRHINO AUFS_WH_PFX AUFS_DR_BRHINO_NAME + +#define AUFS_DIROPQ_NAME AUFS_WH_PFX ".opq" /* whiteouted doubly */ +#define AUFS_WH_DIROPQ AUFS_WH_PFX AUFS_DIROPQ_NAME + +#define AUFS_BASE_NAME AUFS_WH_PFX AUFS_NAME +#define AUFS_PLINKDIR_NAME AUFS_WH_PFX "plnk" +#define AUFS_ORPHDIR_NAME AUFS_WH_PFX "orph" + +/* doubly whiteouted */ +#define AUFS_WH_BASE AUFS_WH_PFX AUFS_BASE_NAME +#define AUFS_WH_PLINKDIR AUFS_WH_PFX AUFS_PLINKDIR_NAME +#define AUFS_WH_ORPHDIR AUFS_WH_PFX AUFS_ORPHDIR_NAME + +/* branch permissions and attributes */ +#define AUFS_BRPERM_RW "rw" +#define AUFS_BRPERM_RO "ro" +#define AUFS_BRPERM_RR "rr" +#define AUFS_BRATTR_COO_REG "coo_reg" +#define AUFS_BRATTR_COO_ALL "coo_all" +#define AUFS_BRATTR_FHSM "fhsm" +#define AUFS_BRATTR_UNPIN "unpin" +#define AUFS_BRATTR_ICEX "icex" +#define AUFS_BRATTR_ICEX_SEC "icexsec" +#define AUFS_BRATTR_ICEX_SYS "icexsys" +#define AUFS_BRATTR_ICEX_TR "icextr" +#define AUFS_BRATTR_ICEX_USR "icexusr" +#define AUFS_BRATTR_ICEX_OTH "icexoth" +#define AUFS_BRRATTR_WH "wh" +#define AUFS_BRWATTR_NLWH "nolwh" +#define AUFS_BRWATTR_MOO "moo" + +#define AuBrPerm_RW 1 /* writable, hardlinkable wh */ +#define AuBrPerm_RO (1 << 1) /* readonly */ +#define AuBrPerm_RR (1 << 2) /* natively readonly */ +#define AuBrPerm_Mask (AuBrPerm_RW | AuBrPerm_RO | AuBrPerm_RR) + +#define AuBrAttr_COO_REG (1 << 3) /* copy-up on open */ +#define AuBrAttr_COO_ALL (1 << 4) +#define AuBrAttr_COO_Mask (AuBrAttr_COO_REG | AuBrAttr_COO_ALL) + +#define AuBrAttr_FHSM (1 << 5) /* file-based hsm */ +#define AuBrAttr_UNPIN (1 << 6) /* rename-able top dir of + branch. meaningless since + linux-3.18-rc1 */ + +/* ignore error in copying XATTR */ +#define AuBrAttr_ICEX_SEC (1 << 7) +#define AuBrAttr_ICEX_SYS (1 << 8) +#define AuBrAttr_ICEX_TR (1 << 9) +#define AuBrAttr_ICEX_USR (1 << 10) +#define AuBrAttr_ICEX_OTH (1 << 11) +#define AuBrAttr_ICEX (AuBrAttr_ICEX_SEC \ + | AuBrAttr_ICEX_SYS \ + | AuBrAttr_ICEX_TR \ + | AuBrAttr_ICEX_USR \ + | AuBrAttr_ICEX_OTH) + +#define AuBrRAttr_WH (1 << 12) /* whiteout-able */ +#define AuBrRAttr_Mask AuBrRAttr_WH + +#define AuBrWAttr_NoLinkWH (1 << 13) /* un-hardlinkable whiteouts */ +#define AuBrWAttr_MOO (1 << 14) /* move-up on open */ +#define AuBrWAttr_Mask (AuBrWAttr_NoLinkWH | AuBrWAttr_MOO) + +#define AuBrAttr_CMOO_Mask (AuBrAttr_COO_Mask | AuBrWAttr_MOO) + +/* #warning test userspace */ +#ifdef __KERNEL__ +#ifndef CONFIG_AUFS_FHSM +#undef AuBrAttr_FHSM +#define AuBrAttr_FHSM 0 +#endif +#ifndef CONFIG_AUFS_XATTR +#undef AuBrAttr_ICEX +#define AuBrAttr_ICEX 0 +#undef AuBrAttr_ICEX_SEC +#define AuBrAttr_ICEX_SEC 0 +#undef AuBrAttr_ICEX_SYS +#define AuBrAttr_ICEX_SYS 0 +#undef AuBrAttr_ICEX_TR +#define AuBrAttr_ICEX_TR 0 +#undef AuBrAttr_ICEX_USR +#define AuBrAttr_ICEX_USR 0 +#undef AuBrAttr_ICEX_OTH +#define AuBrAttr_ICEX_OTH 0 +#endif +#endif + +/* the longest combination */ +/* AUFS_BRATTR_ICEX and AUFS_BRATTR_ICEX_TR don't affect here */ +#define AuBrPermStrSz sizeof(AUFS_BRPERM_RW \ + "+" AUFS_BRATTR_COO_REG \ + "+" AUFS_BRATTR_FHSM \ + "+" AUFS_BRATTR_UNPIN \ + "+" AUFS_BRATTR_ICEX_SEC \ + "+" AUFS_BRATTR_ICEX_SYS \ + "+" AUFS_BRATTR_ICEX_USR \ + "+" AUFS_BRATTR_ICEX_OTH \ + "+" AUFS_BRWATTR_NLWH) + +typedef struct { + char a[AuBrPermStrSz]; +} au_br_perm_str_t; + +static inline int au_br_writable(int brperm) +{ + return brperm & AuBrPerm_RW; +} + +static inline int au_br_whable(int brperm) +{ + return brperm & (AuBrPerm_RW | AuBrRAttr_WH); +} + +static inline int au_br_wh_linkable(int brperm) +{ + return !(brperm & AuBrWAttr_NoLinkWH); +} + +static inline int au_br_cmoo(int brperm) +{ + return brperm & AuBrAttr_CMOO_Mask; +} + +static inline int au_br_fhsm(int brperm) +{ + return brperm & AuBrAttr_FHSM; +} + +/* ---------------------------------------------------------------------- */ + +/* ioctl */ +enum { + /* readdir in userspace */ + AuCtl_RDU, + AuCtl_RDU_INO, + + AuCtl_WBR_FD, /* pathconf wrapper */ + AuCtl_IBUSY, /* busy inode */ + AuCtl_MVDOWN, /* move-down */ + AuCtl_BR, /* info about branches */ + AuCtl_FHSM_FD /* connection for fhsm */ +}; + +/* borrowed from linux/include/linux/kernel.h */ +#ifndef ALIGN +#define ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a)-1) +#define __ALIGN_MASK(x, mask) (((x)+(mask))&~(mask)) +#endif + +/* borrowed from linux/include/linux/compiler-gcc3.h */ +#ifndef __aligned +#define __aligned(x) __attribute__((aligned(x))) +#endif + +#ifdef __KERNEL__ +#ifndef __packed +#define __packed __attribute__((packed)) +#endif +#endif + +struct au_rdu_cookie { + uint64_t h_pos; + int16_t bindex; + uint8_t flags; + uint8_t pad; + uint32_t generation; +} __aligned(8); + +struct au_rdu_ent { + uint64_t ino; + int16_t bindex; + uint8_t type; + uint8_t nlen; + uint8_t wh; + char name[0]; +} __aligned(8); + +static inline int au_rdu_len(int nlen) +{ + /* include the terminating NULL */ + return ALIGN(sizeof(struct au_rdu_ent) + nlen + 1, + sizeof(uint64_t)); +} + +union au_rdu_ent_ul { + struct au_rdu_ent __user *e; + uint64_t ul; +}; + +enum { + AufsCtlRduV_SZ, + AufsCtlRduV_End +}; + +struct aufs_rdu { + /* input */ + union { + uint64_t sz; /* AuCtl_RDU */ + uint64_t nent; /* AuCtl_RDU_INO */ + }; + union au_rdu_ent_ul ent; + uint16_t verify[AufsCtlRduV_End]; + + /* input/output */ + uint32_t blk; + + /* output */ + union au_rdu_ent_ul tail; + /* number of entries which were added in a single call */ + uint64_t rent; + uint8_t full; + uint8_t shwh; + + struct au_rdu_cookie cookie; +} __aligned(8); + +/* ---------------------------------------------------------------------- */ + +/* dirren. the branch is identified by the filename who contains this */ +struct au_drinfo { + uint64_t ino; + union { + uint8_t oldnamelen; + uint64_t _padding; + }; + uint8_t oldname[0]; +} __aligned(8); + +struct au_drinfo_fdata { + uint32_t magic; + struct au_drinfo drinfo; +} __aligned(8); + +#define AUFS_DRINFO_MAGIC_V1 ('a' << 24 | 'd' << 16 | 'r' << 8 | 0x01) +/* future */ +#define AUFS_DRINFO_MAGIC_V2 ('a' << 24 | 'd' << 16 | 'r' << 8 | 0x02) + +/* ---------------------------------------------------------------------- */ + +struct aufs_wbr_fd { + uint32_t oflags; + int16_t brid; +} __aligned(8); + +/* ---------------------------------------------------------------------- */ + +struct aufs_ibusy { + uint64_t ino, h_ino; + int16_t bindex; +} __aligned(8); + +/* ---------------------------------------------------------------------- */ + +/* error code for move-down */ +/* the actual message strings are implemented in aufs-util.git */ +enum { + EAU_MVDOWN_OPAQUE = 1, + EAU_MVDOWN_WHITEOUT, + EAU_MVDOWN_UPPER, + EAU_MVDOWN_BOTTOM, + EAU_MVDOWN_NOUPPER, + EAU_MVDOWN_NOLOWERBR, + EAU_Last +}; + +/* flags for move-down */ +#define AUFS_MVDOWN_DMSG 1 +#define AUFS_MVDOWN_OWLOWER (1 << 1) /* overwrite lower */ +#define AUFS_MVDOWN_KUPPER (1 << 2) /* keep upper */ +#define AUFS_MVDOWN_ROLOWER (1 << 3) /* do even if lower is RO */ +#define AUFS_MVDOWN_ROLOWER_R (1 << 4) /* did on lower RO */ +#define AUFS_MVDOWN_ROUPPER (1 << 5) /* do even if upper is RO */ +#define AUFS_MVDOWN_ROUPPER_R (1 << 6) /* did on upper RO */ +#define AUFS_MVDOWN_BRID_UPPER (1 << 7) /* upper brid */ +#define AUFS_MVDOWN_BRID_LOWER (1 << 8) /* lower brid */ +#define AUFS_MVDOWN_FHSM_LOWER (1 << 9) /* find fhsm attr for lower */ +#define AUFS_MVDOWN_STFS (1 << 10) /* req. stfs */ +#define AUFS_MVDOWN_STFS_FAILED (1 << 11) /* output: stfs is unusable */ +#define AUFS_MVDOWN_BOTTOM (1 << 12) /* output: no more lowers */ + +/* index for move-down */ +enum { + AUFS_MVDOWN_UPPER, + AUFS_MVDOWN_LOWER, + AUFS_MVDOWN_NARRAY +}; + +/* + * additional info of move-down + * number of free blocks and inodes. + * subset of struct kstatfs, but smaller and always 64bit. + */ +struct aufs_stfs { + uint64_t f_blocks; + uint64_t f_bavail; + uint64_t f_files; + uint64_t f_ffree; +}; + +struct aufs_stbr { + int16_t brid; /* optional input */ + int16_t bindex; /* output */ + struct aufs_stfs stfs; /* output when AUFS_MVDOWN_STFS set */ +} __aligned(8); + +struct aufs_mvdown { + uint32_t flags; /* input/output */ + struct aufs_stbr stbr[AUFS_MVDOWN_NARRAY]; /* input/output */ + int8_t au_errno; /* output */ +} __aligned(8); + +/* ---------------------------------------------------------------------- */ + +union aufs_brinfo { + /* PATH_MAX may differ between kernel-space and user-space */ + char _spacer[4096]; + struct { + int16_t id; + int perm; + char path[0]; + }; +} __aligned(8); + +/* ---------------------------------------------------------------------- */ + +#define AuCtlType 'A' +#define AUFS_CTL_RDU _IOWR(AuCtlType, AuCtl_RDU, struct aufs_rdu) +#define AUFS_CTL_RDU_INO _IOWR(AuCtlType, AuCtl_RDU_INO, struct aufs_rdu) +#define AUFS_CTL_WBR_FD _IOW(AuCtlType, AuCtl_WBR_FD, \ + struct aufs_wbr_fd) +#define AUFS_CTL_IBUSY _IOWR(AuCtlType, AuCtl_IBUSY, struct aufs_ibusy) +#define AUFS_CTL_MVDOWN _IOWR(AuCtlType, AuCtl_MVDOWN, \ + struct aufs_mvdown) +#define AUFS_CTL_BRINFO _IOW(AuCtlType, AuCtl_BR, union aufs_brinfo) +#define AUFS_CTL_FHSM_FD _IOW(AuCtlType, AuCtl_FHSM_FD, int) + +#endif /* __AUFS_TYPE_H__ */ diff --git a/include/uapi/linux/sched.h b/include/uapi/linux/sched.h index 22627f80063..ebc69c66054 100644 --- a/include/uapi/linux/sched.h +++ b/include/uapi/linux/sched.h @@ -37,9 +37,14 @@ #define SCHED_FIFO 1 #define SCHED_RR 2 #define SCHED_BATCH 3 -/* SCHED_ISO: reserved but not implemented yet */ +/* SCHED_ISO: Implemented on BFS/PDS only */ +#ifdef CONFIG_SCHED_PDS +#define SCHED_ISO 4 +#endif /* CONFIG_SCHED_PDS */ #define SCHED_IDLE 5 +#ifndef CONFIG_SCHED_PDS #define SCHED_DEADLINE 6 +#endif /* !CONFIG_SCHED_PDS */ /* Can be ORed in to make sure the process is reverted back to SCHED_NORMAL on fork */ #define SCHED_RESET_ON_FORK 0x40000000 diff --git a/include/uapi/linux/vt.h b/include/uapi/linux/vt.h index e9d39c48520..3bceead8da4 100644 --- a/include/uapi/linux/vt.h +++ b/include/uapi/linux/vt.h @@ -3,12 +3,25 @@ #define _UAPI_LINUX_VT_H +/* + * We will make this definition solely for the purpose of making packages + * such as splashutils build, because they can not understand that + * NR_TTY_DEVICES is defined in the kernel configuration. + */ +#ifndef CONFIG_NR_TTY_DEVICES +#define CONFIG_NR_TTY_DEVICES 63 +#endif + /* * These constants are also useful for user-level apps (e.g., VC * resizing). */ #define MIN_NR_CONSOLES 1 /* must be at least 1 */ -#define MAX_NR_CONSOLES 63 /* serial lines start at 64 */ +/* + * NR_TTY_DEVICES: + * Value MUST be at least 12 and must never be higher then 63 + */ +#define MAX_NR_CONSOLES CONFIG_NR_TTY_DEVICES /* serial lines start above this */ /* Note: the ioctl VT_GETSTATE does not work for consoles 16 and higher (since it returns a short) */ diff --git a/init/Kconfig b/init/Kconfig index 041f3a02212..8b30d2fabc1 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -45,6 +45,50 @@ config THREAD_INFO_IN_TASK menu "General setup" +config PCK_INTERACTIVE + bool "Tune kernel for interactivity" + default y + help + Tunes the kernel for responsiveness at the cost of throughput and power usage. + + --- Virtual Memory Subsystem --------------------------- + + Mem dirty before bg writeback..: 10 % -> 20 % + Mem dirty before sync writeback: 20 % -> 50 % + + --- Block Layer ---------------------------------------- + + Queue depth...............: 128 -> 512 + Default MQ scheduler......: mq-deadline -> bfq + + --- CFS CPU Scheduler ---------------------------------- + + Scheduling latency.............: 6 -> 3 ms + Minimal granularity............: 0.75 -> 0.3 ms + Wakeup granularity.............: 1 -> 0.5 ms + CPU migration cost.............: 0.5 -> 0.25 ms + Bandwidth slice size...........: 5 -> 3 ms + Ondemand fine upscaling limit..: 95 % -> 85 % + + --- PDS CPU Scheduler ---------------------------------- + + Scheduling interval............: 6 -> 3 ms + ISO task max realtime use......: 70 % -> 25 % + Ondemand coarse upscaling limit: 63 % -> 45 % + Ondemand fine upscaling limit..: 95 % -> 45 % + +config SCHED_PDS + bool "PDS-mq cpu scheduler" + default n + help + The Priority and Deadline based Skip list multiple queue CPU + Scheduler for excellent interactivity and responsiveness on the + desktop and solid scalability on normal hardware and commodity + servers. + + Currently incompatible with the Group CPU scheduler, and RCU TORTURE + TEST so these options are disabled. + config BROKEN bool @@ -617,6 +661,7 @@ config NUMA_BALANCING depends on ARCH_SUPPORTS_NUMA_BALANCING depends on !ARCH_WANT_NUMA_VARIABLE_LOCALITY depends on SMP && NUMA && MIGRATION + depends on !SCHED_PDS help This option adds support for automatic NUMA aware memory/task placement. The mechanism is quite primitive and is based on migrating memory when @@ -715,6 +760,7 @@ config CGROUP_WRITEBACK menuconfig CGROUP_SCHED bool "CPU controller" + depends on !SCHED_PDS default n help This feature lets CPU scheduler recognize task groups and control CPU @@ -828,6 +874,7 @@ config CGROUP_DEVICE config CGROUP_CPUACCT bool "Simple CPU accounting controller" + depends on !SCHED_PDS help Provides a simple controller for monitoring the total CPU consumed by the tasks in a cgroup. @@ -914,6 +961,22 @@ config USER_NS If unsure, say N. +config USER_NS_UNPRIVILEGED + bool "Allow unprivileged users to create namespaces" + default y + depends on USER_NS + help + When disabled, unprivileged users will not be able to create + new namespaces. Allowing users to create their own namespaces + has been part of several recent local privilege escalation + exploits, so if you need user namespaces but are + paranoid^Wsecurity-conscious you want to disable this. + + This setting can be overridden at runtime via the + kernel.unprivileged_userns_clone sysctl. + + If unsure, say Y. + config PID_NS bool "PID Namespaces" default y @@ -934,6 +997,7 @@ endif # NAMESPACES config SCHED_AUTOGROUP bool "Automatic process group scheduling" + depends on !SCHED_PDS select CGROUPS select CGROUP_SCHED select FAIR_GROUP_SCHED @@ -1026,6 +1090,13 @@ config CC_OPTIMIZE_FOR_PERFORMANCE with the "-O2" compiler flag for best performance and most helpful compile-time warnings. +config CC_OPTIMIZE_HARDER + bool "Optimize harder" + help + This option will pass "-O3" to your compiler resulting in a + larger and faster kernel. The more complex optimizations also + increase compilation time and may affect stability. + config CC_OPTIMIZE_FOR_SIZE bool "Optimize for size" help diff --git a/init/init_task.c b/init/init_task.c index 74f60baa279..1316c4f2083 100644 --- a/init/init_task.c +++ b/init/init_task.c @@ -36,8 +36,7 @@ static struct signal_struct init_signals = { INIT_PREV_CPUTIME(init_signals) }; -static struct sighand_struct init_sighand = { - .count = ATOMIC_INIT(1), +static struct sighand_struct init_sighand = { .count = ATOMIC_INIT(1), .action = { { { .sa_handler = SIG_DFL, } }, }, .siglock = __SPIN_LOCK_UNLOCKED(init_sighand.siglock), .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(init_sighand.signalfd_wqh), @@ -52,6 +51,130 @@ struct task_struct init_task __init_task_data #endif = { +#ifdef CONFIG_SCHED_PDS +#ifdef CONFIG_THREAD_INFO_IN_TASK + .thread_info = INIT_THREAD_INFO(init_task), + .stack_refcount = ATOMIC_INIT(1), +#endif + .state = 0, + .stack = init_stack, + .usage = ATOMIC_INIT(2), + .flags = PF_KTHREAD, + .prio = NORMAL_PRIO, + .static_prio = MAX_PRIO - 20, + .normal_prio = NORMAL_PRIO, + .deadline = 0, /* PDS only */ + .policy = SCHED_NORMAL, + .cpus_allowed = CPU_MASK_ALL, + .nr_cpus_allowed= NR_CPUS, + .mm = NULL, + .active_mm = &init_mm, + .restart_block = { + .fn = do_no_restart_syscall, + }, + .sl_level = 0, /* PDS only */ + .sl_node = SKIPLIST_NODE_INIT(init_task.sl_node), /* PDS only */ + .time_slice = HZ, /* PDS only */ + .tasks = LIST_HEAD_INIT(init_task.tasks), +#ifdef CONFIG_SMP + .pushable_tasks = PLIST_NODE_INIT(init_task.pushable_tasks, MAX_PRIO), +#endif +#ifdef CONFIG_CGROUP_SCHED + /* PDS not supported yet + .sched_task_group = &root_task_group,*/ +#endif + .ptraced = LIST_HEAD_INIT(init_task.ptraced), + .ptrace_entry = LIST_HEAD_INIT(init_task.ptrace_entry), + .real_parent = &init_task, + .parent = &init_task, + .children = LIST_HEAD_INIT(init_task.children), + .sibling = LIST_HEAD_INIT(init_task.sibling), + .group_leader = &init_task, + RCU_POINTER_INITIALIZER(real_cred, &init_cred), + RCU_POINTER_INITIALIZER(cred, &init_cred), + .comm = INIT_TASK_COMM, + .thread = INIT_THREAD, + .fs = &init_fs, + .files = &init_files, + .signal = &init_signals, + .sighand = &init_sighand, + .nsproxy = &init_nsproxy, + .pending = { + .list = LIST_HEAD_INIT(init_task.pending.list), + .signal = {{0}} + }, + .blocked = {{0}}, + .alloc_lock = __SPIN_LOCK_UNLOCKED(init_task.alloc_lock), + .journal_info = NULL, + INIT_CPU_TIMERS(init_task) + .pi_lock = __RAW_SPIN_LOCK_UNLOCKED(init_task.pi_lock), + .timer_slack_ns = 50000, /* 50 usec default slack */ + .pids = { + [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), + [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), + [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), + }, + .thread_group = LIST_HEAD_INIT(init_task.thread_group), + .thread_node = LIST_HEAD_INIT(init_signals.thread_head), +#ifdef CONFIG_AUDITSYSCALL + .loginuid = INVALID_UID, + .sessionid = (unsigned int)-1, +#endif +#ifdef CONFIG_PERF_EVENTS + .perf_event_mutex = __MUTEX_INITIALIZER(init_task.perf_event_mutex), + .perf_event_list = LIST_HEAD_INIT(init_task.perf_event_list), +#endif +#ifdef CONFIG_PREEMPT_RCU + .rcu_read_lock_nesting = 0, + .rcu_read_unlock_special.s = 0, + .rcu_node_entry = LIST_HEAD_INIT(init_task.rcu_node_entry), + .rcu_blocked_node = NULL, +#endif +#ifdef CONFIG_TASKS_RCU + .rcu_tasks_holdout = false, + .rcu_tasks_holdout_list = LIST_HEAD_INIT(init_task.rcu_tasks_holdout_list), + .rcu_tasks_idle_cpu = -1, +#endif +#ifdef CONFIG_CPUSETS + .mems_allowed_seq = SEQCNT_ZERO(init_task.mems_allowed_seq), +#endif +#ifdef CONFIG_RT_MUTEXES + .pi_waiters = RB_ROOT_CACHED, + .pi_top_task = NULL, +#endif + INIT_PREV_CPUTIME(init_task) +#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN + .vtime.seqcount = SEQCNT_ZERO(init_task.vtime_seqcount), + .vtime.starttime = 0, + .vtime.state = VTIME_SYS, +#endif +#ifdef CONFIG_NUMA_BALANCING + .numa_preferred_nid = -1, + .numa_group = NULL, + .numa_faults = NULL, +#endif +#ifdef CONFIG_KASAN + .kasan_depth = 1, +#endif +#ifdef CONFIG_TRACE_IRQFLAGS + .softirqs_enabled = 1, +#endif +#ifdef CONFIG_LOCKDEP + .lockdep_recursion = 0, +#endif +#ifdef CONFIG_FUNCTION_GRAPH_TRACER + .ret_stack = NULL, +#endif +#if defined(CONFIG_TRACING) && defined(CONFIG_PREEMPT) + .trace_recursion = 0, +#endif +#ifdef CONFIG_LIVEPATCH + .patch_state = KLP_UNDEFINED, +#endif +#ifdef CONFIG_SECURITY + .security = NULL, +#endif +#else /* CONFIG_SCHED_PDS */ #ifdef CONFIG_THREAD_INFO_IN_TASK .thread_info = INIT_THREAD_INFO(init_task), .stack_refcount = ATOMIC_INIT(1), @@ -176,6 +299,7 @@ struct task_struct init_task #ifdef CONFIG_SECURITY .security = NULL, #endif +#endif /* CONFIG_SCHED_PDS */ }; EXPORT_SYMBOL(init_task); diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c index 266f10cb722..adc0712ddad 100644 --- a/kernel/cgroup/cpuset.c +++ b/kernel/cgroup/cpuset.c @@ -549,7 +549,7 @@ static int validate_change(struct cpuset *cur, struct cpuset *trial) return ret; } -#ifdef CONFIG_SMP +#if defined(CONFIG_SMP) && !defined(CONFIG_SCHED_PDS) /* * Helper routine for generate_sched_domains(). * Do cpusets a, b have overlapping effective cpus_allowed masks? @@ -849,7 +849,7 @@ static void rebuild_sched_domains_locked(void) out: put_online_cpus(); } -#else /* !CONFIG_SMP */ +#else /* !CONFIG_SMP || CONFIG_SCHED_PDS */ static void rebuild_sched_domains_locked(void) { } diff --git a/kernel/delayacct.c b/kernel/delayacct.c index ca8ac2824f0..ae824da28e4 100644 --- a/kernel/delayacct.c +++ b/kernel/delayacct.c @@ -115,7 +115,7 @@ int __delayacct_add_tsk(struct taskstats *d, struct task_struct *tsk) */ t1 = tsk->sched_info.pcount; t2 = tsk->sched_info.run_delay; - t3 = tsk->se.sum_exec_runtime; + t3 = tsk_seruntime(tsk); d->cpu_count += t1; diff --git a/kernel/exit.c b/kernel/exit.c index c3c7ac56011..075eea2120d 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -129,7 +129,7 @@ static void __exit_signal(struct task_struct *tsk) sig->curr_target = next_thread(tsk); } - add_device_randomness((const void*) &tsk->se.sum_exec_runtime, + add_device_randomness((const void*) &tsk_seruntime(tsk), sizeof(unsigned long long)); /* @@ -150,7 +150,7 @@ static void __exit_signal(struct task_struct *tsk) sig->inblock += task_io_get_inblock(tsk); sig->oublock += task_io_get_oublock(tsk); task_io_accounting_add(&sig->ioac, &tsk->ioac); - sig->sum_sched_runtime += tsk->se.sum_exec_runtime; + sig->sum_sched_runtime += tsk_seruntime(tsk); sig->nr_threads--; __unhash_process(tsk, group_dead); write_sequnlock(&sig->stats_lock); diff --git a/kernel/fork.c b/kernel/fork.c index 1b27babc4c7..52a2abe9a39 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -103,6 +103,11 @@ #define CREATE_TRACE_POINTS #include +#ifdef CONFIG_USER_NS +extern int unprivileged_userns_clone; +#else +#define unprivileged_userns_clone 0 +#endif /* * Minimum number of threads to boot the kernel @@ -504,7 +509,7 @@ static __latent_entropy int dup_mmap(struct mm_struct *mm, struct inode *inode = file_inode(file); struct address_space *mapping = file->f_mapping; - get_file(file); + vma_get_file(tmp); if (tmp->vm_flags & VM_DENYWRITE) atomic_dec(&inode->i_writecount); i_mmap_lock_write(mapping); @@ -537,7 +542,7 @@ static __latent_entropy int dup_mmap(struct mm_struct *mm, __vma_link_rb(mm, tmp, rb_link, rb_parent); rb_link = &tmp->vm_rb.rb_right; rb_parent = &tmp->vm_rb; - + uksm_vma_add_new(tmp); mm->map_count++; if (!(tmp->vm_flags & VM_WIPEONFORK)) retval = copy_page_range(mm, oldmm, mpnt); @@ -614,7 +619,7 @@ static void check_mm(struct mm_struct *mm) #endif } -#define allocate_mm() (kmem_cache_alloc(mm_cachep, GFP_KERNEL)) +#define allocate_mm() (kmem_cache_zalloc(mm_cachep, GFP_KERNEL)) #define free_mm(mm) (kmem_cache_free(mm_cachep, (mm))) /* @@ -1624,6 +1629,10 @@ static __latent_entropy struct task_struct *copy_process( if ((clone_flags & (CLONE_NEWUSER|CLONE_FS)) == (CLONE_NEWUSER|CLONE_FS)) return ERR_PTR(-EINVAL); + if ((clone_flags & CLONE_NEWUSER) && !unprivileged_userns_clone) + if (!capable(CAP_SYS_ADMIN)) + return ERR_PTR(-EPERM); + /* * Thread groups must share signals as well, and detached threads * can only be started up within the thread group. @@ -2420,6 +2429,12 @@ int ksys_unshare(unsigned long unshare_flags) if (unshare_flags & CLONE_NEWNS) unshare_flags |= CLONE_FS; + if ((unshare_flags & CLONE_NEWUSER) && !unprivileged_userns_clone) { + err = -EPERM; + if (!capable(CAP_SYS_ADMIN)) + goto bad_unshare_out; + } + err = check_unshare_flags(unshare_flags); if (err) goto bad_unshare_out; diff --git a/kernel/livepatch/transition.c b/kernel/livepatch/transition.c index 7c6631e693b..e4dfd097965 100644 --- a/kernel/livepatch/transition.c +++ b/kernel/livepatch/transition.c @@ -298,7 +298,12 @@ static int klp_check_stack(struct task_struct *task, char *err_buf) static bool klp_try_switch_task(struct task_struct *task) { struct rq *rq; +#ifdef CONFIG_SCHED_PDS + raw_spinlock_t *lock; + unsigned long flags; +#else struct rq_flags flags; +#endif int ret; bool success = false; char err_buf[STACK_ERR_BUF_SIZE]; @@ -321,9 +326,15 @@ static bool klp_try_switch_task(struct task_struct *task) * functions. If all goes well, switch the task to the target patch * state. */ +#ifdef CONFIG_SCHED_PDS + rq = task_access_lock_irqsave(task, &lock, &flags); + + if (task_running(task) && task != current) { +#else rq = task_rq_lock(task, &flags); if (task_running(rq, task) && task != current) { +#endif snprintf(err_buf, STACK_ERR_BUF_SIZE, "%s: %s:%d is running\n", __func__, task->comm, task->pid); @@ -340,7 +351,11 @@ static bool klp_try_switch_task(struct task_struct *task) task->patch_state = klp_target_state; done: +#ifdef CONFIG_SCHED_PDS + task_access_unlock_irqrestore(task, lock, &flags); +#else task_rq_unlock(rq, task, &flags); +#endif /* * Due to console deadlock issues, pr_debug() can't be used while diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c index 5fa4d3138bf..4f58215d9a2 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -140,7 +140,7 @@ static struct lock_list list_entries[MAX_LOCKDEP_ENTRIES]; unsigned long nr_lock_classes; static struct lock_class lock_classes[MAX_LOCKDEP_KEYS]; -static inline struct lock_class *hlock_class(struct held_lock *hlock) +inline struct lock_class *lockdep_hlock_class(struct held_lock *hlock) { if (!hlock->class_idx) { /* @@ -151,6 +151,8 @@ static inline struct lock_class *hlock_class(struct held_lock *hlock) } return lock_classes + hlock->class_idx - 1; } +EXPORT_SYMBOL_GPL(lockdep_hlock_class); +#define hlock_class(hlock) lockdep_hlock_class(hlock) #ifdef CONFIG_LOCK_STAT static DEFINE_PER_CPU(struct lock_class_stats[MAX_LOCKDEP_KEYS], cpu_lock_stats); diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c index 2823d4163a3..8990250263c 100644 --- a/kernel/locking/rtmutex.c +++ b/kernel/locking/rtmutex.c @@ -228,7 +228,7 @@ static inline bool unlock_rt_mutex_safe(struct rt_mutex *lock, * Only use with rt_mutex_waiter_{less,equal}() */ #define task_to_waiter(p) \ - &(struct rt_mutex_waiter){ .prio = (p)->prio, .deadline = (p)->dl.deadline } + &(struct rt_mutex_waiter){ .prio = (p)->prio, .deadline = __tsk_deadline(p) } static inline int rt_mutex_waiter_less(struct rt_mutex_waiter *left, @@ -680,7 +680,7 @@ static int rt_mutex_adjust_prio_chain(struct task_struct *task, * the values of the node being removed. */ waiter->prio = task->prio; - waiter->deadline = task->dl.deadline; + waiter->deadline = __tsk_deadline(task); rt_mutex_enqueue(lock, waiter); @@ -954,7 +954,7 @@ static int task_blocks_on_rt_mutex(struct rt_mutex *lock, waiter->task = task; waiter->lock = lock; waiter->prio = task->prio; - waiter->deadline = task->dl.deadline; + waiter->deadline = __tsk_deadline(task); /* Get the top priority waiter on the lock */ if (rt_mutex_has_waiters(lock)) diff --git a/kernel/sched/Makefile b/kernel/sched/Makefile index d9a02b31810..e5df6620d69 100644 --- a/kernel/sched/Makefile +++ b/kernel/sched/Makefile @@ -16,15 +16,21 @@ ifneq ($(CONFIG_SCHED_OMIT_FRAME_POINTER),y) CFLAGS_core.o := $(PROFILING) -fno-omit-frame-pointer endif -obj-y += core.o loadavg.o clock.o cputime.o -obj-y += idle.o fair.o rt.o deadline.o -obj-y += wait.o wait_bit.o swait.o completion.o - -obj-$(CONFIG_SMP) += cpupri.o cpudeadline.o topology.o stop_task.o +ifdef CONFIG_SCHED_PDS +obj-y += pds.o +else +obj-y += core.o +obj-y += fair.o rt.o deadline.o +obj-$(CONFIG_SMP) += cpudeadline.o topology.o stop_task.o obj-$(CONFIG_SCHED_AUTOGROUP) += autogroup.o -obj-$(CONFIG_SCHEDSTATS) += stats.o obj-$(CONFIG_SCHED_DEBUG) += debug.o obj-$(CONFIG_CGROUP_CPUACCT) += cpuacct.o +endif +obj-y += loadavg.o clock.o cputime.o +obj-y += idle.o +obj-y += wait.o wait_bit.o swait.o completion.o +obj-$(CONFIG_SMP) += cpupri.o +obj-$(CONFIG_SCHEDSTATS) += stats.o obj-$(CONFIG_CPU_FREQ) += cpufreq.o obj-$(CONFIG_CPU_FREQ_GOV_SCHEDUTIL) += cpufreq_schedutil.o obj-$(CONFIG_MEMBARRIER) += membarrier.o diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c index c907fde01ea..e5312103561 100644 --- a/kernel/sched/cpufreq_schedutil.c +++ b/kernel/sched/cpufreq_schedutil.c @@ -181,15 +181,22 @@ static unsigned int get_next_freq(struct sugov_policy *sg_policy, static void sugov_get_util(struct sugov_cpu *sg_cpu) { +#ifdef CONFIG_SCHED_PDS + sg_cpu->max = arch_scale_cpu_capacity(NULL, sg_cpu->cpu); +#else struct rq *rq = cpu_rq(sg_cpu->cpu); sg_cpu->max = arch_scale_cpu_capacity(NULL, sg_cpu->cpu); sg_cpu->util_cfs = cpu_util_cfs(rq); sg_cpu->util_dl = cpu_util_dl(rq); +#endif } static unsigned long sugov_aggregate_util(struct sugov_cpu *sg_cpu) { +#ifdef CONFIG_SCHED_PDS + return sg_cpu->max; +#else struct rq *rq = cpu_rq(sg_cpu->cpu); if (rt_rq_is_runnable(&rq->rt)) @@ -206,6 +213,7 @@ static unsigned long sugov_aggregate_util(struct sugov_cpu *sg_cpu) * ready for such an interface. So, we only do the latter for now. */ return min(sg_cpu->max, (sg_cpu->util_dl + sg_cpu->util_cfs)); +#endif } /** @@ -360,7 +368,9 @@ static inline bool sugov_cpu_is_busy(struct sugov_cpu *sg_cpu) { return false; } */ static inline void ignore_dl_rate_limit(struct sugov_cpu *sg_cpu, struct sugov_policy *sg_policy) { +#ifndef CONFIG_SCHED_PDS if (cpu_util_dl(cpu_rq(sg_cpu->cpu)) > sg_cpu->util_dl) +#endif sg_policy->need_freq_update = true; } @@ -573,8 +583,12 @@ static int sugov_kthread_create(struct sugov_policy *sg_policy) struct task_struct *thread; struct sched_attr attr = { .size = sizeof(struct sched_attr), +#ifdef CONFIG_SCHED_PDS + .sched_policy = SCHED_FIFO, +#else .sched_policy = SCHED_DEADLINE, .sched_flags = SCHED_FLAG_SUGOV, +#endif .sched_nice = 0, .sched_priority = 0, /* @@ -602,7 +616,12 @@ static int sugov_kthread_create(struct sugov_policy *sg_policy) return PTR_ERR(thread); } +#ifdef CONFIG_SCHED_PDS + ret = sched_setattr(thread, &attr); +#else ret = sched_setattr_nocheck(thread, &attr); +#endif + if (ret) { kthread_stop(thread); pr_warn("%s: failed to set SCHED_DEADLINE\n", __func__); diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index 0796f938c4f..71906b8e693 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -121,7 +121,12 @@ void account_user_time(struct task_struct *p, u64 cputime) p->utime += cputime; account_group_user_time(p, cputime); +#ifdef CONFIG_SCHED_PDS + index = (task_nice(p) > 0 || idleprio_task(p)) ? CPUTIME_NICE : + CPUTIME_USER; +#else index = (task_nice(p) > 0) ? CPUTIME_NICE : CPUTIME_USER; +#endif /* Add user time to cpustat. */ task_group_account_field(p, index, cputime); @@ -145,7 +150,11 @@ void account_guest_time(struct task_struct *p, u64 cputime) p->gtime += cputime; /* Add guest time to cpustat. */ +#ifdef CONFIG_SCHED_PDS + if (task_nice(p) > 0 || idleprio_task(p)) { +#else if (task_nice(p) > 0) { +#endif cpustat[CPUTIME_NICE] += cputime; cpustat[CPUTIME_GUEST_NICE] += cputime; } else { @@ -268,7 +277,23 @@ static inline u64 account_other_time(u64 max) #ifdef CONFIG_64BIT static inline u64 read_sum_exec_runtime(struct task_struct *t) { - return t->se.sum_exec_runtime; + return tsk_seruntime(t); +} +#else + +#ifdef CONFIG_SCHED_PDS +static u64 read_sum_exec_runtime(struct task_struct *t) +{ + u64 ns; + struct rq *rq; + raw_spinlock_t *lock; + unsigned long flags; + + rq = task_access_lock_irqsave(t, &lock, &flags); + ns = tsk_seruntime(t); + task_access_unlock_irqrestore(t, lock, &flags); + + return ns; } #else static u64 read_sum_exec_runtime(struct task_struct *t) @@ -278,13 +303,15 @@ static u64 read_sum_exec_runtime(struct task_struct *t) struct rq *rq; rq = task_rq_lock(t, &rf); - ns = t->se.sum_exec_runtime; + ns = tsk_seruntime(t); task_rq_unlock(rq, t, &rf); return ns; } #endif +#endif + /* * Accumulate raw cputime values of dead tasks (sig->[us]time) and live * tasks (sum on group iteration) belonging to @tsk's group. @@ -662,7 +689,7 @@ void cputime_adjust(struct task_cputime *curr, struct prev_cputime *prev, void task_cputime_adjusted(struct task_struct *p, u64 *ut, u64 *st) { struct task_cputime cputime = { - .sum_exec_runtime = p->se.sum_exec_runtime, + .sum_exec_runtime = tsk_seruntime(p), }; task_cputime(p, &cputime.utime, &cputime.stime); diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 9c219f7b097..9738fd4686f 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -37,8 +37,13 @@ * * (default: 6ms * (1 + ilog(ncpus)), units: nanoseconds) */ +#ifdef CONFIG_PCK_INTERACTIVE +unsigned int sysctl_sched_latency = 3000000ULL; +unsigned int normalized_sysctl_sched_latency = 3000000ULL; +#else unsigned int sysctl_sched_latency = 6000000ULL; unsigned int normalized_sysctl_sched_latency = 6000000ULL; +#endif /* * The initial- and re-scaling of tunables is configurable @@ -58,13 +63,22 @@ enum sched_tunable_scaling sysctl_sched_tunable_scaling = SCHED_TUNABLESCALING_L * * (default: 0.75 msec * (1 + ilog(ncpus)), units: nanoseconds) */ +#ifdef CONFIG_PCK_INTERACTIVE +unsigned int sysctl_sched_min_granularity = 300000ULL; +unsigned int normalized_sysctl_sched_min_granularity = 300000ULL; +#else unsigned int sysctl_sched_min_granularity = 750000ULL; unsigned int normalized_sysctl_sched_min_granularity = 750000ULL; +#endif /* * This value is kept at sysctl_sched_latency/sysctl_sched_min_granularity */ +#ifdef CONFIG_PCK_INTERACTIVE +static unsigned int sched_nr_latency = 10; +#else static unsigned int sched_nr_latency = 8; +#endif /* * After fork, child runs first. If set to 0 (default) then @@ -81,10 +95,17 @@ unsigned int sysctl_sched_child_runs_first __read_mostly; * * (default: 1 msec * (1 + ilog(ncpus)), units: nanoseconds) */ +#ifdef CONFIG_PCK_INTERACTIVE +unsigned int sysctl_sched_wakeup_granularity = 500000UL; +unsigned int normalized_sysctl_sched_wakeup_granularity = 500000UL; + +const_debug unsigned int sysctl_sched_migration_cost = 250000UL; +#else unsigned int sysctl_sched_wakeup_granularity = 1000000UL; unsigned int normalized_sysctl_sched_wakeup_granularity = 1000000UL; const_debug unsigned int sysctl_sched_migration_cost = 500000UL; +#endif #ifdef CONFIG_SMP /* @@ -107,8 +128,12 @@ int __weak arch_asym_cpu_priority(int cpu) * * (default: 5 msec, units: microseconds) */ +#ifdef CONFIG_PCK_INTERACTIVE +unsigned int sysctl_sched_cfs_bandwidth_slice = 3000UL; +#else unsigned int sysctl_sched_cfs_bandwidth_slice = 5000UL; #endif +#endif /* * The margin used when comparing utilization with CPU capacity: diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c index 1a3e9bddd17..542f4823b26 100644 --- a/kernel/sched/idle.c +++ b/kernel/sched/idle.c @@ -368,6 +368,7 @@ void cpu_startup_entry(enum cpuhp_state state) do_idle(); } +#ifndef CONFIG_SCHED_PDS /* * idle-task scheduling class. */ @@ -480,3 +481,4 @@ const struct sched_class idle_sched_class = { .switched_to = switched_to_idle, .update_curr = update_curr_idle, }; +#endif diff --git a/kernel/sched/pds.c b/kernel/sched/pds.c new file mode 100644 index 00000000000..ad83bbd4214 --- /dev/null +++ b/kernel/sched/pds.c @@ -0,0 +1,6366 @@ +/* + * kernel/sched/pds.c, was kernel/sched.c + * + * PDS-mq Core kernel scheduler code and related syscalls + * + * Copyright (C) 1991-2002 Linus Torvalds + * + * 2009-08-13 Brainfuck deadline scheduling policy by Con Kolivas deletes + * a whole lot of those previous things. + * 2017-09-06 Priority and Deadline based Skip list multiple queue kernel + * scheduler by Alfred Chen. + */ +#include "pds_sched.h" + +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include + +#include "../workqueue_internal.h" +#include "../smpboot.h" + +#define CREATE_TRACE_POINTS +#include + + +#define rt_prio(prio) ((prio) < MAX_RT_PRIO) +#define rt_task(p) rt_prio((p)->prio) +#define batch_task(p) ((p)->policy == SCHED_BATCH) +#define is_rt_policy(policy) ((policy) == SCHED_FIFO || \ + (policy) == SCHED_RR) +#define has_rt_policy(p) (is_rt_policy((p)->policy)) + +/* is_idle_policy() and idleprio_task() are defined in include/linux/sched.h */ +#define task_running_idle(p) ((p)->prio == IDLE_PRIO) + +/* is_iso_policy() and iso_task() are defined in include/linux/sched.h */ +#define task_running_iso(p) ((p)->prio == ISO_PRIO) + +#define ISO_PERIOD ((5 * HZ) + 1) + +#define SCHED_PRIO(p) ((p) + MAX_RT_PRIO) +#define STOP_PRIO (MAX_RT_PRIO - 1) + +/* + * Some helpers for converting to/from various scales. Use shifts to get + * approximate multiples of ten for less overhead. + */ +#define JIFFIES_TO_NS(TIME) ((TIME) * (1000000000 / HZ)) +#define JIFFY_NS (1000000000 / HZ) +#define HALF_JIFFY_NS (1000000000 / HZ / 2) +#define HALF_JIFFY_US (1000000 / HZ / 2) +#define MS_TO_NS(TIME) ((TIME) << 20) +#define MS_TO_US(TIME) ((TIME) << 10) +#define NS_TO_MS(TIME) ((TIME) >> 20) +#define NS_TO_US(TIME) ((TIME) >> 10) +#define US_TO_NS(TIME) ((TIME) << 10) + +#define RESCHED_US (100) /* Reschedule if less than this many μs left */ + +#define MIN_VISIBLE_DEADLINE (1 << 8) + +/* + * RQ balance mask and shift + */ +static u64 sched_balance_mask ____cacheline_aligned_in_smp = (8ULL - 1); +static u64 sched_balance_shift ____cacheline_aligned_in_smp = 0UL; + +enum { + BASE_CPU_AFFINITY_CHK_LEVEL = 1, +#ifdef CONFIG_SCHED_SMT + SMT_CPU_AFFINITY_CHK_LEVEL_SPACE_HOLDER, +#endif +#ifdef CONFIG_SCHED_MC + MC_CPU_AFFINITY_CHK_LEVEL_SPACE_HOLDER, +#endif + NR_CPU_AFFINITY_CHK_LEVEL +}; + +static inline void print_scheduler_version(void) +{ + printk(KERN_INFO "pds: PDS-mq CPU Scheduler 0.98v by Alfred Chen.\n"); +} + +/* task_struct::on_rq states: */ +#define TASK_ON_RQ_QUEUED 1 +#define TASK_ON_RQ_MIGRATING 2 + +static inline int task_on_rq_queued(struct task_struct *p) +{ + return p->on_rq == TASK_ON_RQ_QUEUED; +} + +static inline int task_on_rq_migrating(struct task_struct *p) +{ + return p->on_rq == TASK_ON_RQ_MIGRATING; +} + +/* + * This is the time all tasks within the same priority round robin. + * Value is in ms and set to a minimum of 6ms. Scales with number of cpus. + * Tunable via /proc interface. + */ +#ifdef CONFIG_PCK_INTERACTIVE +#define SCHED_DEFAULT_RR (3) +#else +#define SCHED_DEFAULT_RR (6) +#endif +int rr_interval __read_mostly = SCHED_DEFAULT_RR; + +static int __init rr_interval_set(char *str) +{ + u32 rr; + + pr_info("rr_interval: "); + if (kstrtouint(str, 0, &rr)) { + pr_cont("using default of %u, unable to parse %s\n", + rr_interval, str); + return 1; + } + + rr_interval = rr; + pr_cont("%d\n", rr_interval); + + return 1; +} +__setup("rr_interval=", rr_interval_set); + + +static const u64 sched_prio2deadline[NICE_WIDTH] = { +/* -20 */ 6291456, 6920601, 7612661, 8373927, 9211319, +/* -15 */ 10132450, 11145695, 12260264, 13486290, 14834919, +/* -10 */ 16318410, 17950251, 19745276, 21719803, 23891783, +/* -5 */ 26280961, 28909057, 31799962, 34979958, 38477953, +/* 0 */ 42325748, 46558322, 51214154, 56335569, 61969125, +/* 5 */ 68166037, 74982640, 82480904, 90728994, 99801893, +/* 10 */ 109782082, 120760290, 132836319, 146119950, 160731945, +/* 15 */ 176805139, 194485652, 213934217, 235327638, 258860401 +}; + +/* + * sched_iso_cpu - sysctl which determines the CPUs percentage SCHED_ISO tasks + * are allowed to run five seconds as real time tasks. This is the total over + * all online cpus. + */ +#ifdef CONFIG_PCK_INTERACTIVE +int sched_iso_cpu __read_mostly = 25; +#else +int sched_iso_cpu __read_mostly = 70; +#endif + +/** + * sched_yield_type - Choose what sort of yield sched_yield will perform. + * 0: No yield. + * 1: Yield only to better priority/deadline tasks. (default) + * 2: Expire timeslice and recalculate deadline. + */ +int sched_yield_type __read_mostly = 1; + +/* + * The quota handed out to tasks of all priority levels when refilling their + * time_slice. + */ +static inline int timeslice(void) +{ + return MS_TO_US(rr_interval); +} + +#ifdef CONFIG_SMP + +#define MAX_SCHED_RQ_NR_RUNNING_BITS (32UL) + +static cpumask_t sched_rq_nr_running_masks[MAX_SCHED_RQ_NR_RUNNING_BITS] +____cacheline_aligned_in_smp; + +static DECLARE_BITMAP(sched_rq_nr_running_mb, MAX_SCHED_RQ_NR_RUNNING_BITS) +____cacheline_aligned_in_smp; + +enum { +SCHED_RQ_EMPTY = 0, +SCHED_RQ_IDLE, +SCHED_RQ_NORMAL_0, +SCHED_RQ_NORMAL_1, +SCHED_RQ_NORMAL_2, +SCHED_RQ_NORMAL_3, +SCHED_RQ_NORMAL_4, +SCHED_RQ_NORMAL_5, +SCHED_RQ_NORMAL_6, +SCHED_RQ_NORMAL_7, +SCHED_RQ_RT, +NR_SCHED_RQ_QUEUED_LEVEL +}; + +static cpumask_t sched_rq_queued_masks[NR_SCHED_RQ_QUEUED_LEVEL] +____cacheline_aligned_in_smp; + +static DECLARE_BITMAP(sched_rq_queued_masks_bitmap, NR_SCHED_RQ_QUEUED_LEVEL) +____cacheline_aligned_in_smp; + +DEFINE_PER_CPU(cpumask_t [NR_CPU_AFFINITY_CHK_LEVEL], sched_cpu_affinity_chk_masks); +DEFINE_PER_CPU(cpumask_t *, sched_cpu_llc_start_mask); +DEFINE_PER_CPU(cpumask_t *, sched_cpu_affinity_chk_end_masks); + +#ifdef CONFIG_SCHED_SMT +DEFINE_PER_CPU(unsigned int, cpu_has_smt_sibling); + +static cpumask_t sched_cpu_sg_idle_mask ____cacheline_aligned_in_smp; +#endif + +static int sched_rq_prio[NR_CPUS] ____cacheline_aligned; + +/* + * Keep a unique ID per domain (we use the first CPUs number in the cpumask of + * the domain), this allows us to quickly tell if two cpus are in the same cache + * domain, see cpus_share_cache(). + */ +DEFINE_PER_CPU(int, sd_llc_id); + +int __weak arch_sd_sibling_asym_packing(void) +{ + return 0*SD_ASYM_PACKING; +} +#else +struct rq *uprq; +#endif /* CONFIG_SMP */ + +static DEFINE_MUTEX(sched_hotcpu_mutex); + +DEFINE_PER_CPU_SHARED_ALIGNED(struct rq, runqueues); + +#ifndef prepare_arch_switch +# define prepare_arch_switch(next) do { } while (0) +#endif +#ifndef finish_arch_post_lock_switch +# define finish_arch_post_lock_switch() do { } while (0) +#endif + +/** + * A task that is not running or queued will not have a node set. + * A task that is queued but not running will have a node set. + * A task that is currently running will have ->on_cpu set but no node set. + */ +static inline bool task_queued(struct task_struct *p) +{ + return !skiplist_empty(&p->sl_node); +} + +/* + * Context: p->pi_lock + */ +static inline struct rq +*__task_access_lock(struct task_struct *p, raw_spinlock_t **plock) +{ + struct rq *rq; + for (;;) { + rq = task_rq(p); + if (p->on_cpu || task_on_rq_queued(p)) { + raw_spin_lock(&rq->lock); + if (likely((p->on_cpu || task_on_rq_queued(p)) + && rq == task_rq(p))) { + *plock = &rq->lock; + return rq; + } + raw_spin_unlock(&rq->lock); + } else if (task_on_rq_migrating(p)) { + do { + cpu_relax(); + } while (unlikely(task_on_rq_migrating(p))); + } else { + *plock = NULL; + return rq; + } + } +} + +static inline void +__task_access_unlock(struct task_struct *p, raw_spinlock_t *lock) +{ + if (NULL != lock) + raw_spin_unlock(lock); +} + +struct rq +*task_access_lock_irqsave(struct task_struct *p, raw_spinlock_t **plock, + unsigned long *flags) +{ + struct rq *rq; + for (;;) { + rq = task_rq(p); + if (p->on_cpu || task_on_rq_queued(p)) { + raw_spin_lock_irqsave(&rq->lock, *flags); + if (likely((p->on_cpu || task_on_rq_queued(p)) + && rq == task_rq(p))) { + *plock = &rq->lock; + return rq; + } + raw_spin_unlock_irqrestore(&rq->lock, *flags); + } else if (task_on_rq_migrating(p)) { + do { + cpu_relax(); + } while (unlikely(task_on_rq_migrating(p))); + } else { + raw_spin_lock_irqsave(&p->pi_lock, *flags); + if (likely(!p->on_cpu && !p->on_rq && + rq == task_rq(p))) { + *plock = &p->pi_lock; + return rq; + } + raw_spin_unlock_irqrestore(&p->pi_lock, *flags); + } + } +} + +/* + * RQ-clock updating methods: + */ + +static void update_rq_clock_task(struct rq *rq, s64 delta) +{ +/* + * In theory, the compile should just see 0 here, and optimize out the call + * to sched_rt_avg_update. But I don't trust it... + */ +#ifdef CONFIG_IRQ_TIME_ACCOUNTING + s64 irq_delta = irq_time_read(cpu_of(rq)) - rq->prev_irq_time; + + /* + * Since irq_time is only updated on {soft,}irq_exit, we might run into + * this case when a previous update_rq_clock() happened inside a + * {soft,}irq region. + * + * When this happens, we stop ->clock_task and only update the + * prev_irq_time stamp to account for the part that fit, so that a next + * update will consume the rest. This ensures ->clock_task is + * monotonic. + * + * It does however cause some slight miss-attribution of {soft,}irq + * time, a more accurate solution would be to update the irq_time using + * the current rq->clock timestamp, except that would require using + * atomic ops. + */ + if (irq_delta > delta) + irq_delta = delta; + + rq->prev_irq_time += irq_delta; + delta -= irq_delta; +#endif +#ifdef CONFIG_PARAVIRT_TIME_ACCOUNTING + if (static_key_false((¶virt_steal_rq_enabled))) { + s64 steal = paravirt_steal_clock(cpu_of(rq)); + + steal -= rq->prev_steal_time_rq; + + if (unlikely(steal > delta)) + steal = delta; + + rq->prev_steal_time_rq += steal; + + delta -= steal; + } +#endif + + rq->clock_task += delta; +} + +static inline void update_rq_clock(struct rq *rq) +{ + s64 delta = sched_clock_cpu(cpu_of(rq)) - rq->clock; + + if (unlikely(delta <= 0)) + return; + rq->clock += delta; + update_rq_clock_task(rq, delta); +} + +static inline void update_task_priodl(struct task_struct *p) +{ + p->priodl = (((u64) (p->prio))<<56) | ((p->deadline)>>8); +} + +/* + * Deadline is "now" in niffies + (offset by priority). Setting the deadline + * is the key to everything. It distributes CPU fairly amongst tasks of the + * same nice value, it proportions CPU according to nice level, it means the + * task that last woke up the longest ago has the earliest deadline, thus + * ensuring that interactive tasks get low latency on wake up. The CPU + * proportion works out to the square of the virtual deadline difference, so + * this equation will give nice 19 3% CPU compared to nice 0. + */ +static inline u64 task_deadline_diff(const struct task_struct *p) +{ + return sched_prio2deadline[TASK_USER_PRIO(p)]; +} + +static inline u64 static_deadline_diff(int static_prio) +{ + return sched_prio2deadline[USER_PRIO(static_prio)]; +} + +static inline struct task_struct *rq_first_queued_task(struct rq *rq) +{ + struct skiplist_node *node = rq->sl_header.next[0]; + + if (node == &rq->sl_header) + return NULL; + + return skiplist_entry(node, struct task_struct, sl_node); +} + +static const int task_dl_hash_tbl[] = { +/* 0 4 8 12 */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, +/* 16 20 24 28 */ + 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 4, 4, 5, 6, 7 +}; + +static inline int +task_deadline_level(const struct task_struct *p, const struct rq *rq) +{ + u64 delta = (rq->clock + sched_prio2deadline[39] - p->deadline) >> 23; + + delta = min((size_t)delta, ARRAY_SIZE(task_dl_hash_tbl) - 1); + return task_dl_hash_tbl[delta]; +} + +#ifdef CONFIG_SMP +static inline bool +__update_cpumasks_bitmap(int cpu, unsigned long *plevel, unsigned long level, + cpumask_t cpumasks[], unsigned long bitmap[]) +{ + if (*plevel == level) + return false; + + cpumask_clear_cpu(cpu, cpumasks + *plevel); + if (cpumask_empty(cpumasks + *plevel)) + clear_bit(*plevel, bitmap); + cpumask_set_cpu(cpu, cpumasks + level); + set_bit(level, bitmap); + + *plevel = level; + + return true; +} + +static inline void update_sched_rq_nr_running_masks(struct rq *rq) +{ + unsigned long level; + + level = find_last_bit(&rq->nr_running, MAX_SCHED_RQ_NR_RUNNING_BITS); + level %= MAX_SCHED_RQ_NR_RUNNING_BITS; + __update_cpumasks_bitmap(cpu_of(rq), &rq->nr_running_level, level, + &sched_rq_nr_running_masks[0], + &sched_rq_nr_running_mb[0]); +} + +static inline int +task_running_policy_level(const struct task_struct *p, const struct rq *rq) +{ + int prio = p->prio; + + if (NORMAL_PRIO == prio) + return SCHED_RQ_NORMAL_0 + task_deadline_level(p, rq); + + if (prio <= ISO_PRIO) + return SCHED_RQ_RT; + return PRIO_LIMIT - prio; +} + +static inline void update_sched_rq_queued_masks_normal(struct rq *rq) +{ + struct task_struct *p = rq_first_queued_task(rq); + + if (p == NULL || p->prio != NORMAL_PRIO) + return; + + __update_cpumasks_bitmap(cpu_of(rq), &rq->queued_level, + task_running_policy_level(p, rq), + &sched_rq_queued_masks[0], + &sched_rq_queued_masks_bitmap[0]); +} + +static inline void update_sched_rq_queued_masks(struct rq *rq) +{ + int cpu = cpu_of(rq); + struct task_struct *p; + unsigned long level, last_level = rq->queued_level; + + if ((p = rq_first_queued_task(rq)) == NULL) { + level = SCHED_RQ_EMPTY; + sched_rq_prio[cpu] = PRIO_LIMIT; + } else { + level = task_running_policy_level(p, rq); + sched_rq_prio[cpu] = p->prio; + } + + if (!__update_cpumasks_bitmap(cpu, &rq->queued_level, level, + &sched_rq_queued_masks[0], + &sched_rq_queued_masks_bitmap[0])) + return; + +#ifdef CONFIG_SCHED_SMT + if (per_cpu(cpu_has_smt_sibling, cpu)) { + if (SCHED_RQ_EMPTY == last_level) { + cpumask_andnot(&sched_cpu_sg_idle_mask, + &sched_cpu_sg_idle_mask, + cpu_smt_mask(cpu)); + } else if (SCHED_RQ_EMPTY == level) { + cpumask_t tmp; + + cpumask_and(&tmp, cpu_smt_mask(cpu), + &sched_rq_queued_masks[SCHED_RQ_EMPTY]); + if (cpumask_equal(&tmp, cpu_smt_mask(cpu))) + cpumask_or(&sched_cpu_sg_idle_mask, + &sched_cpu_sg_idle_mask, + cpu_smt_mask(cpu)); + } + } +#endif +} +#else /* CONFIG_SMP */ +static inline void update_sched_rq_queued_masks(struct rq *rq) {} +static inline void update_sched_rq_queued_masks_normal(struct rq *rq) {} +#endif + +#ifdef CONFIG_NO_HZ_FULL +/* + * Tick may be needed by tasks in the runqueue depending on their policy and + * requirements. If tick is needed, lets send the target an IPI to kick it out + * of nohz mode if necessary. + */ +static inline void sched_update_tick_dependency(struct rq *rq) +{ + int cpu; + + if (!tick_nohz_full_enabled()) + return; + + cpu = cpu_of(rq); + + if (!tick_nohz_full_cpu(cpu)) + return; + + if (rq->nr_running < 2) + tick_nohz_dep_clear_cpu(cpu, TICK_DEP_BIT_SCHED); + else + tick_nohz_dep_set_cpu(cpu, TICK_DEP_BIT_SCHED); +} +#else /* !CONFIG_NO_HZ_FULL */ +static inline void sched_update_tick_dependency(struct rq *rq) { } +#endif + +/* + * Removing from the runqueue. Deleting a task from the skip list is done + * via the stored node reference in the task struct and does not require a full + * look up. Thus it occurs in O(k) time where k is the "level" of the list the + * task was stored at - usually < 4, max 16. + * + * Context: rq->lock + */ +static inline void dequeue_task(struct task_struct *p, struct rq *rq) +{ + lockdep_assert_held(&rq->lock); + + WARN_ONCE(task_rq(p) != rq, "pds: dequeue task reside on cpu%d from cpu%d\n", + task_cpu(p), cpu_of(rq)); + if (skiplist_del_init(&rq->sl_header, &p->sl_node)) + update_sched_rq_queued_masks(rq); + rq->nr_running--; +#ifdef CONFIG_SMP + update_sched_rq_nr_running_masks(rq); +#endif + + sched_update_tick_dependency(rq); + + sched_info_dequeued(rq, p); +} + +/* + * To determine if it's safe for a task of SCHED_IDLE to actually run as + * an idle task, we ensure none of the following conditions are met. + */ +static bool idleprio_suitable(struct task_struct *p) +{ + return (!freezing(p) && !signal_pending(p) && + !(task_contributes_to_load(p)) && !(p->flags & (PF_EXITING))); +} + +/* + * To determine if a task of SCHED_ISO can run in pseudo-realtime, we check + * that the iso_refractory flag is not set. + */ +static bool isoprio_suitable(struct rq *rq) +{ + return !rq->iso_refractory; +} + +/* + * pds_skiplist_random_level -- Returns a pseudo-random level number for skip + * list node which is used in PDS run queue. + * + * In current implementation, based on testing, the first 8 bits in microseconds + * of niffies are suitable for random level population. + * find_first_bit() is used to satisfy p = 0.5 between each levels, and there + * should be platform hardware supported instruction(known as ctz/clz) to speed + * up this function. + * The skiplist level for a task is populated when task is created and doesn't + * change in task's life time. When task is being inserted into run queue, this + * skiplist level is set to task's sl_node->level, the skiplist insert function + * may change it based on current level of the skip lsit. + */ +static inline int pds_skiplist_random_level(const struct task_struct *p) +{ + long unsigned int randseed; + + /* + * 1. Some architectures don't have better than microsecond resolution + * so mask out ~microseconds as a factor of the random seed for skiplist + * insertion. + * 2. Use address of task structure pointer as another factor of the + * random seed for task burst forking scenario. Shift right 9 bits to + * remove the aligned zero bits in the task structure address. + */ + randseed = (task_rq(p)->clock >> 10) ^ ((long unsigned int)p >> 9); + + return find_first_bit(&randseed, NUM_SKIPLIST_LEVEL - 1); +} + +/** + * pds_skiplist_task_search -- search function used in PDS run queue skip list + * node insert operation. + * @it: iterator pointer to the node in the skip list + * @node: pointer to the skiplist_node to be inserted + * + * Returns true if key of @it is less or equal to key value of @node, otherwise + * false. + */ +static inline bool +pds_skiplist_task_search(struct skiplist_node *it, struct skiplist_node *node) +{ + return (skiplist_entry(it, struct task_struct, sl_node)->priodl <= + skiplist_entry(node, struct task_struct, sl_node)->priodl); +} + +/* + * Define the skip list insert function for PDS + */ +DEFINE_SKIPLIST_INSERT_FUNC(pds_skiplist_insert, pds_skiplist_task_search); + +/* + * Adding task to the runqueue. + * + * Context: rq->lock + */ +static inline void enqueue_task(struct task_struct *p, struct rq *rq) +{ + lockdep_assert_held(&rq->lock); + + /* Check ISO tasks suitable to run normal priority */ + if (iso_task(p)) { + p->prio = isoprio_suitable(rq)? p->normal_prio:NORMAL_PRIO; + update_task_priodl(p); + } + + WARN_ONCE(task_rq(p) != rq, "pds: enqueue task reside on cpu%d to cpu%d\n", + task_cpu(p), cpu_of(rq)); + + p->sl_node.level = p->sl_level; + if (pds_skiplist_insert(&rq->sl_header, &p->sl_node)) + update_sched_rq_queued_masks(rq); + rq->nr_running++; +#ifdef CONFIG_SMP + update_sched_rq_nr_running_masks(rq); +#endif + + sched_update_tick_dependency(rq); + + sched_info_queued(rq, p); + + /* + * If in_iowait is set, the code below may not trigger any cpufreq + * utilization updates, so do it here explicitly with the IOWAIT flag + * passed. + */ + if (p->in_iowait) + cpufreq_update_this_cpu(rq, SCHED_CPUFREQ_IOWAIT); +} + +static inline void requeue_task(struct task_struct *p, struct rq *rq) +{ + bool b_first; + + lockdep_assert_held(&rq->lock); + + WARN_ONCE(task_rq(p) != rq, "pds: cpu[%d] requeue task reside on cpu%d\n", + cpu_of(rq), task_cpu(p)); + + b_first = skiplist_del_init(&rq->sl_header, &p->sl_node); + + p->sl_node.level = p->sl_level; + if (pds_skiplist_insert(&rq->sl_header, &p->sl_node) || b_first) + update_sched_rq_queued_masks(rq); +} + +/* + * cmpxchg based fetch_or, macro so it works for different integer types + */ +#define fetch_or(ptr, mask) \ + ({ \ + typeof(ptr) _ptr = (ptr); \ + typeof(mask) _mask = (mask); \ + typeof(*_ptr) _old, _val = *_ptr; \ + \ + for (;;) { \ + _old = cmpxchg(_ptr, _val, _val | _mask); \ + if (_old == _val) \ + break; \ + _val = _old; \ + } \ + _old; \ +}) + +#if defined(CONFIG_SMP) && defined(TIF_POLLING_NRFLAG) +/* + * Atomically set TIF_NEED_RESCHED and test for TIF_POLLING_NRFLAG, + * this avoids any races wrt polling state changes and thereby avoids + * spurious IPIs. + */ +static bool set_nr_and_not_polling(struct task_struct *p) +{ + struct thread_info *ti = task_thread_info(p); + return !(fetch_or(&ti->flags, _TIF_NEED_RESCHED) & _TIF_POLLING_NRFLAG); +} + +/* + * Atomically set TIF_NEED_RESCHED if TIF_POLLING_NRFLAG is set. + * + * If this returns true, then the idle task promises to call + * sched_ttwu_pending() and reschedule soon. + */ +static bool set_nr_if_polling(struct task_struct *p) +{ + struct thread_info *ti = task_thread_info(p); + typeof(ti->flags) old, val = READ_ONCE(ti->flags); + + for (;;) { + if (!(val & _TIF_POLLING_NRFLAG)) + return false; + if (val & _TIF_NEED_RESCHED) + return true; + old = cmpxchg(&ti->flags, val, val | _TIF_NEED_RESCHED); + if (old == val) + break; + val = old; + } + return true; +} + +#else +static bool set_nr_and_not_polling(struct task_struct *p) +{ + set_tsk_need_resched(p); + return true; +} + +#ifdef CONFIG_SMP +static bool set_nr_if_polling(struct task_struct *p) +{ + return false; +} +#endif +#endif + +/* + * resched_curr - mark rq's current task 'to be rescheduled now'. + * + * On UP this means the setting of the need_resched flag, on SMP it + * might also involve a cross-CPU call to trigger the scheduler on + * the target CPU. + */ +void resched_curr(struct rq *rq) +{ + struct task_struct *curr = rq->curr; + int cpu; + + lockdep_assert_held(&rq->lock); + + if (test_tsk_need_resched(curr)) + return; + + cpu = cpu_of(rq); + if (cpu == smp_processor_id()) { + set_tsk_need_resched(curr); + set_preempt_need_resched(); + return; + } + + if (set_nr_and_not_polling(curr)) + smp_send_reschedule(cpu); + else + trace_sched_wake_idle_without_ipi(cpu); +} + +static inline void check_preempt_curr(struct rq *rq, struct task_struct *p) +{ + struct task_struct *curr = rq->curr; + + if (curr->prio == PRIO_LIMIT) + resched_curr(rq); + + if (batch_task(p) || idleprio_task(p)) + return; + + if (p->priodl < curr->priodl) + resched_curr(rq); +} + +#ifdef CONFIG_SCHED_HRTICK +/* + * Use HR-timers to deliver accurate preemption points. + */ + +static void hrtick_clear(struct rq *rq) +{ + if (hrtimer_active(&rq->hrtick_timer)) + hrtimer_cancel(&rq->hrtick_timer); +} + +/* + * High-resolution timer tick. + * Runs from hardirq context with interrupts disabled. + */ +static enum hrtimer_restart hrtick(struct hrtimer *timer) +{ + struct rq *rq = container_of(timer, struct rq, hrtick_timer); + struct task_struct *p; + + WARN_ON_ONCE(cpu_of(rq) != smp_processor_id()); + + raw_spin_lock(&rq->lock); + p = rq->curr; + p->time_slice = 0; + resched_curr(rq); + raw_spin_unlock(&rq->lock); + + return HRTIMER_NORESTART; +} + +/* + * Use hrtick when: + * - enabled by features + * - hrtimer is actually high res + */ +static inline int hrtick_enabled(struct rq *rq) +{ + /** + * PDS doesn't support sched_feat yet + if (!sched_feat(HRTICK)) + return 0; + */ + if (!cpu_active(cpu_of(rq))) + return 0; + return hrtimer_is_hres_active(&rq->hrtick_timer); +} + +#ifdef CONFIG_SMP + +static void __hrtick_restart(struct rq *rq) +{ + struct hrtimer *timer = &rq->hrtick_timer; + + hrtimer_start_expires(timer, HRTIMER_MODE_ABS_PINNED); +} + +/* + * called from hardirq (IPI) context + */ +static void __hrtick_start(void *arg) +{ + struct rq *rq = arg; + + raw_spin_lock(&rq->lock); + __hrtick_restart(rq); + rq->hrtick_csd_pending = 0; + raw_spin_unlock(&rq->lock); +} + +/* + * Called to set the hrtick timer state. + * + * called with rq->lock held and irqs disabled + */ +void hrtick_start(struct rq *rq, u64 delay) +{ + struct hrtimer *timer = &rq->hrtick_timer; + ktime_t time; + s64 delta; + + /* + * Don't schedule slices shorter than 10000ns, that just + * doesn't make sense and can cause timer DoS. + */ + delta = max_t(s64, delay, 10000LL); + time = ktime_add_ns(timer->base->get_time(), delta); + + hrtimer_set_expires(timer, time); + + if (rq == this_rq()) { + __hrtick_restart(rq); + } else if (!rq->hrtick_csd_pending) { + smp_call_function_single_async(cpu_of(rq), &rq->hrtick_csd); + rq->hrtick_csd_pending = 1; + } +} + +#else +/* + * Called to set the hrtick timer state. + * + * called with rq->lock held and irqs disabled + */ +void hrtick_start(struct rq *rq, u64 delay) +{ + /* + * Don't schedule slices shorter than 10000ns, that just + * doesn't make sense. Rely on vruntime for fairness. + */ + delay = max_t(u64, delay, 10000LL); + hrtimer_start(&rq->hrtick_timer, ns_to_ktime(delay), + HRTIMER_MODE_REL_PINNED); +} +#endif /* CONFIG_SMP */ + +static void hrtick_rq_init(struct rq *rq) +{ +#ifdef CONFIG_SMP + rq->hrtick_csd_pending = 0; + + rq->hrtick_csd.flags = 0; + rq->hrtick_csd.func = __hrtick_start; + rq->hrtick_csd.info = rq; +#endif + + hrtimer_init(&rq->hrtick_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + rq->hrtick_timer.function = hrtick; +} + +static inline int rq_dither(struct rq *rq) +{ + if ((rq->clock - rq->last_tick > HALF_JIFFY_NS) || hrtick_enabled(rq)) + return 0; + + return HALF_JIFFY_NS; +} + +#else /* CONFIG_SCHED_HRTICK */ +static inline int hrtick_enabled(struct rq *rq) +{ + return 0; +} + +static inline void hrtick_clear(struct rq *rq) +{ +} + +static inline void hrtick_rq_init(struct rq *rq) +{ +} + +static inline int rq_dither(struct rq *rq) +{ + return (rq->clock - rq->last_tick > HALF_JIFFY_NS)? 0:HALF_JIFFY_NS; +} +#endif /* CONFIG_SCHED_HRTICK */ + +static inline int normal_prio(struct task_struct *p) +{ + if (has_rt_policy(p)) + return MAX_RT_PRIO - 1 - p->rt_priority; + if (idleprio_task(p)) + return IDLE_PRIO; + if (iso_task(p)) + return ISO_PRIO; + return NORMAL_PRIO; +} + +/* + * Calculate the current priority, i.e. the priority + * taken into account by the scheduler. This value might + * be boosted by RT tasks as it will be RT if the task got + * RT-boosted. If not then it returns p->normal_prio. + */ +static int effective_prio(struct task_struct *p) +{ + p->normal_prio = normal_prio(p); + /* + * If we are RT tasks or we were boosted to RT priority, + * keep the priority unchanged. Otherwise, update priority + * to the normal priority: + */ + if (!rt_prio(p->prio)) + return p->normal_prio; + return p->prio; +} + +/* + * activate_task - move a task to the runqueue. + * + * Context: rq->lock + */ +static void activate_task(struct task_struct *p, struct rq *rq) +{ + if (task_contributes_to_load(p)) + rq->nr_uninterruptible--; + enqueue_task(p, rq); + p->on_rq = 1; + cpufreq_update_this_cpu(rq, 0); +} + +/* + * deactivate_task - remove a task from the runqueue. + * + * Context: rq->lock + */ +static inline void deactivate_task(struct task_struct *p, struct rq *rq) +{ + if (task_contributes_to_load(p)) + rq->nr_uninterruptible++; + dequeue_task(p, rq); + p->on_rq = 0; + cpufreq_update_this_cpu(rq, 0); +} + +static inline void __set_task_cpu(struct task_struct *p, unsigned int cpu) +{ +#ifdef CONFIG_SMP + /* + * After ->cpu is set up to a new value, task_access_lock(p, ...) can be + * successfully executed on another CPU. We must ensure that updates of + * per-task data have been completed by this moment. + */ + smp_wmb(); + +#ifdef CONFIG_THREAD_INFO_IN_TASK + p->cpu = cpu; +#else + task_thread_info(p)->cpu = cpu; +#endif +#endif +} + +#ifdef CONFIG_SMP +void set_task_cpu(struct task_struct *p, unsigned int new_cpu) +{ +#ifdef CONFIG_SCHED_DEBUG + /* + * We should never call set_task_cpu() on a blocked task, + * ttwu() will sort out the placement. + */ + WARN_ON_ONCE(p->state != TASK_RUNNING && p->state != TASK_WAKING && + !p->on_rq); +#ifdef CONFIG_LOCKDEP + /* + * The caller should hold either p->pi_lock or rq->lock, when changing + * a task's CPU. ->pi_lock for waking tasks, rq->lock for runnable tasks. + * + * sched_move_task() holds both and thus holding either pins the cgroup, + * see task_group(). + */ + WARN_ON_ONCE(debug_locks && !(lockdep_is_held(&p->pi_lock) || + lockdep_is_held(&task_rq(p)->lock))); +#endif + /* + * Clearly, migrating tasks to offline CPUs is a fairly daft thing. + */ + WARN_ON_ONCE(!cpu_online(new_cpu)); +#endif + if (task_cpu(p) == new_cpu) + return; + trace_sched_migrate_task(p, new_cpu); + rseq_migrate(p); + perf_event_task_migrate(p); + + __set_task_cpu(p, new_cpu); +} + +static inline bool is_per_cpu_kthread(struct task_struct *p) +{ + return ((p->flags & PF_KTHREAD) && (1 == p->nr_cpus_allowed)); +} + +/* + * Per-CPU kthreads are allowed to run on !actie && online CPUs, see + * __set_cpus_allowed_ptr() and select_fallback_rq(). + */ +static inline bool is_cpu_allowed(struct task_struct *p, int cpu) +{ + if (!cpumask_test_cpu(cpu, &p->cpus_allowed)) + return false; + + if (is_per_cpu_kthread(p)) + return cpu_online(cpu); + + return cpu_active(cpu); +} + +/* + * This is how migration works: + * + * 1) we invoke migration_cpu_stop() on the target CPU using + * stop_one_cpu(). + * 2) stopper starts to run (implicitly forcing the migrated thread + * off the CPU) + * 3) it checks whether the migrated task is still in the wrong runqueue. + * 4) if it's in the wrong runqueue then the migration thread removes + * it and puts it into the right queue. + * 5) stopper completes and stop_one_cpu() returns and the migration + * is done. + */ + +/* + * detach_task() -- detach the task for the migration specified in @target_cpu + */ +static void detach_task(struct rq *rq, struct task_struct *p, int target_cpu) +{ + lockdep_assert_held(&rq->lock); + + p->on_rq = TASK_ON_RQ_MIGRATING; + if (task_contributes_to_load(p)) + rq->nr_uninterruptible++; + dequeue_task(p, rq); + + set_task_cpu(p, target_cpu); +} + +/* + * attach_task() -- attach the task detached by detach_task() to its new rq. + */ +static void attach_task(struct rq *rq, struct task_struct *p) +{ + lockdep_assert_held(&rq->lock); + + BUG_ON(task_rq(p) != rq); + + if (task_contributes_to_load(p)) + rq->nr_uninterruptible--; + enqueue_task(p, rq); + p->on_rq = TASK_ON_RQ_QUEUED; + cpufreq_update_this_cpu(rq, 0); +} + +/* + * move_queued_task - move a queued task to new rq. + * + * Returns (locked) new rq. Old rq's lock is released. + */ +static struct rq *move_queued_task(struct rq *rq, struct task_struct *p, int + new_cpu) +{ + detach_task(rq, p, new_cpu); + raw_spin_unlock(&rq->lock); + + rq = cpu_rq(new_cpu); + + raw_spin_lock(&rq->lock); + update_rq_clock(rq); + + attach_task(rq, p); + + check_preempt_curr(rq, p); + + return rq; +} + +struct migration_arg { + struct task_struct *task; + int dest_cpu; +}; + +/* + * Move (not current) task off this CPU, onto the destination CPU. We're doing + * this because either it can't run here any more (set_cpus_allowed() + * away from this CPU, or CPU going down), or because we're + * attempting to rebalance this task on exec (sched_exec). + * + * So we race with normal scheduler movements, but that's OK, as long + * as the task is no longer on this CPU. + */ +static struct rq *__migrate_task(struct rq *rq, struct task_struct *p, int + dest_cpu) +{ + /* Affinity changed (again). */ + if (!is_cpu_allowed(p, dest_cpu)) + return rq; + + update_rq_clock(rq); + return move_queued_task(rq, p, dest_cpu); +} + +/* + * migration_cpu_stop - this will be executed by a highprio stopper thread + * and performs thread migration by bumping thread off CPU then + * 'pushing' onto another runqueue. + */ +static int migration_cpu_stop(void *data) +{ + struct migration_arg *arg = data; + struct task_struct *p = arg->task; + struct rq *rq = this_rq(); + + /* + * The original target CPU might have gone down and we might + * be on another CPU but it doesn't matter. + */ + local_irq_disable(); + + raw_spin_lock(&p->pi_lock); + raw_spin_lock(&rq->lock); + /* + * If task_rq(p) != rq, it cannot be migrated here, because we're + * holding rq->lock, if p->on_rq == 0 it cannot get enqueued because + * we're holding p->pi_lock. + */ + if (task_rq(p) == rq) + if (task_on_rq_queued(p)) + rq = __migrate_task(rq, p, arg->dest_cpu); + raw_spin_unlock(&rq->lock); + raw_spin_unlock(&p->pi_lock); + + local_irq_enable(); + return 0; +} + +static inline void +set_cpus_allowed_common(struct task_struct *p, const struct cpumask *new_mask) +{ + cpumask_copy(&p->cpus_allowed, new_mask); + p->nr_cpus_allowed = cpumask_weight(new_mask); +} + +void do_set_cpus_allowed(struct task_struct *p, const struct cpumask *new_mask) +{ + set_cpus_allowed_common(p, new_mask); +} +#endif + +/* Enter with rq lock held. We know p is on the local CPU */ +static inline void __set_tsk_resched(struct task_struct *p) +{ + set_tsk_need_resched(p); + set_preempt_need_resched(); +} + +/** + * task_curr - is this task currently executing on a CPU? + * @p: the task in question. + * + * Return: 1 if the task is currently executing. 0 otherwise. + */ +inline int task_curr(const struct task_struct *p) +{ + return cpu_curr(task_cpu(p)) == p; +} + +#ifdef CONFIG_SMP +/* + * wait_task_inactive - wait for a thread to unschedule. + * + * If @match_state is nonzero, it's the @p->state value just checked and + * not expected to change. If it changes, i.e. @p might have woken up, + * then return zero. When we succeed in waiting for @p to be off its CPU, + * we return a positive number (its total switch count). If a second call + * a short while later returns the same number, the caller can be sure that + * @p has remained unscheduled the whole time. + * + * The caller must ensure that the task *will* unschedule sometime soon, + * else this function might spin for a *long* time. This function can't + * be called with interrupts off, or it may introduce deadlock with + * smp_call_function() if an IPI is sent by the same process we are + * waiting to become inactive. + */ +unsigned long wait_task_inactive(struct task_struct *p, long match_state) +{ + unsigned long flags; + bool running, on_rq; + unsigned long ncsw; + struct rq *rq; + raw_spinlock_t *lock; + + for (;;) { + rq = task_rq(p); + + /* + * If the task is actively running on another CPU + * still, just relax and busy-wait without holding + * any locks. + * + * NOTE! Since we don't hold any locks, it's not + * even sure that "rq" stays as the right runqueue! + * But we don't care, since this will return false + * if the runqueue has changed and p is actually now + * running somewhere else! + */ + while (task_running(p) && p == rq->curr) { + if (match_state && unlikely(p->state != match_state)) + return 0; + cpu_relax(); + } + + /* + * Ok, time to look more closely! We need the rq + * lock now, to be *sure*. If we're wrong, we'll + * just go back and repeat. + */ + task_access_lock_irqsave(p, &lock, &flags); + trace_sched_wait_task(p); + running = task_running(p); + on_rq = p->on_rq; + ncsw = 0; + if (!match_state || p->state == match_state) + ncsw = p->nvcsw | LONG_MIN; /* sets MSB */ + task_access_unlock_irqrestore(p, lock, &flags); + + /* + * If it changed from the expected state, bail out now. + */ + if (unlikely(!ncsw)) + break; + + /* + * Was it really running after all now that we + * checked with the proper locks actually held? + * + * Oops. Go back and try again.. + */ + if (unlikely(running)) { + cpu_relax(); + continue; + } + + /* + * It's not enough that it's not actively running, + * it must be off the runqueue _entirely_, and not + * preempted! + * + * So if it was still runnable (but just not actively + * running right now), it's preempted, and we should + * yield - it could be a while. + */ + if (unlikely(on_rq)) { + ktime_t to = NSEC_PER_SEC / HZ; + + set_current_state(TASK_UNINTERRUPTIBLE); + schedule_hrtimeout(&to, HRTIMER_MODE_REL); + continue; + } + + /* + * Ahh, all good. It wasn't running, and it wasn't + * runnable, which means that it will never become + * running in the future either. We're all done! + */ + break; + } + + return ncsw; +} + +/*** + * kick_process - kick a running thread to enter/exit the kernel + * @p: the to-be-kicked thread + * + * Cause a process which is running on another CPU to enter + * kernel-mode, without any delay. (to get signals handled.) + * + * NOTE: this function doesn't have to take the runqueue lock, + * because all it wants to ensure is that the remote task enters + * the kernel. If the IPI races and the task has been migrated + * to another CPU then no harm is done and the purpose has been + * achieved as well. + */ +void kick_process(struct task_struct *p) +{ + int cpu; + + preempt_disable(); + cpu = task_cpu(p); + if ((cpu != smp_processor_id()) && task_curr(p)) + smp_send_reschedule(cpu); + preempt_enable(); +} +EXPORT_SYMBOL_GPL(kick_process); + +/* + * ->cpus_allowed is protected by both rq->lock and p->pi_lock + * + * A few notes on cpu_active vs cpu_online: + * + * - cpu_active must be a subset of cpu_online + * + * - on CPU-up we allow per-CPU kthreads on the online && !active CPU, + * see __set_cpus_allowed_ptr(). At this point the newly online + * CPU isn't yet part of the sched domains, and balancing will not + * see it. + * + * - on cpu-down we clear cpu_active() to mask the sched domains and + * avoid the load balancer to place new tasks on the to be removed + * CPU. Existing tasks will remain running there and will be taken + * off. + * + * This means that fallback selection must not select !active CPUs. + * And can assume that any active CPU must be online. Conversely + * select_task_rq() below may allow selection of !active CPUs in order + * to satisfy the above rules. + */ +static int select_fallback_rq(int cpu, struct task_struct *p) +{ + int nid = cpu_to_node(cpu); + const struct cpumask *nodemask = NULL; + enum { cpuset, possible, fail } state = cpuset; + int dest_cpu; + + /* + * If the node that the CPU is on has been offlined, cpu_to_node() + * will return -1. There is no CPU on the node, and we should + * select the CPU on the other node. + */ + if (nid != -1) { + nodemask = cpumask_of_node(nid); + + /* Look for allowed, online CPU in same node. */ + for_each_cpu(dest_cpu, nodemask) { + if (!cpu_active(dest_cpu)) + continue; + if (cpumask_test_cpu(dest_cpu, &p->cpus_allowed)) + return dest_cpu; + } + } + + for (;;) { + /* Any allowed, online CPU? */ + for_each_cpu(dest_cpu, &p->cpus_allowed) { + if (!is_cpu_allowed(p, dest_cpu)) + continue; + goto out; + } + + /* No more Mr. Nice Guy. */ + switch (state) { + case cpuset: + if (IS_ENABLED(CONFIG_CPUSETS)) { + cpuset_cpus_allowed_fallback(p); + state = possible; + break; + } + /* Fall-through */ + case possible: + do_set_cpus_allowed(p, cpu_possible_mask); + state = fail; + break; + + case fail: + BUG(); + break; + } + } + +out: + if (state != cpuset) { + /* + * Don't tell them about moving exiting tasks or + * kernel threads (both mm NULL), since they never + * leave kernel. + */ + if (p->mm && printk_ratelimit()) { + printk_deferred("process %d (%s) no longer affine to cpu%d\n", + task_pid_nr(p), p->comm, cpu); + } + } + + return dest_cpu; +} + +static inline int best_mask_cpu(const int cpu, cpumask_t *cpumask) +{ + cpumask_t tmp, *mask; + + if (cpumask_weight(cpumask) == 1) + return cpumask_first(cpumask); + + if (cpumask_test_cpu(cpu, cpumask)) + return cpu; + + for (mask = &(per_cpu(sched_cpu_affinity_chk_masks, cpu)[0]); + mask < per_cpu(sched_cpu_affinity_chk_end_masks, cpu); mask++) + if (cpumask_and(&tmp, cpumask, mask)) + return cpumask_any(&tmp); + + /* Safe fallback, should never come here */ + return cpumask_first(cpumask); +} + +/* + * task_preemptible_rq - return the rq which the given task can preempt on + * @p: task wants to preempt CPU + * @only_preempt_low_policy: indicate only preempt rq running low policy than @p + */ +static inline int +task_preemptible_rq(struct task_struct *p, cpumask_t *chk_mask) +{ + cpumask_t tmp; + int level, preempt_level; + +#ifdef CONFIG_SCHED_SMT + if (cpumask_and(&tmp, chk_mask, &sched_cpu_sg_idle_mask)) + return best_mask_cpu(task_cpu(p), &tmp); +#endif + + if (batch_task(p)) + preempt_level = SCHED_RQ_NORMAL_0; + else + preempt_level = task_running_policy_level(p, this_rq()); + level = find_first_bit(sched_rq_queued_masks_bitmap, + NR_SCHED_RQ_QUEUED_LEVEL); + + while (level < preempt_level) { + if (cpumask_and(&tmp, chk_mask, &sched_rq_queued_masks[level])) + return best_mask_cpu(task_cpu(p), &tmp); + + level = find_next_bit(sched_rq_queued_masks_bitmap, + NR_SCHED_RQ_QUEUED_LEVEL, + level + 1); + } + + if (unlikely(level == preempt_level && + SCHED_RQ_RT == level && + cpumask_and(&tmp, chk_mask, + &sched_rq_queued_masks[preempt_level]))) { + unsigned int cpu; + + for_each_cpu (cpu, &tmp) + if (p->prio < sched_rq_prio[cpu]) + return cpu; + } + + return best_mask_cpu(task_cpu(p), chk_mask); +} + +/* + * wake flags + */ +#define WF_SYNC 0x01 /* waker goes to sleep after wakeup */ +#define WF_FORK 0x02 /* child wakeup after fork */ +#define WF_MIGRATED 0x04 /* internal use, task got migrated */ + +static inline int select_task_rq(struct task_struct *p) +{ + cpumask_t chk_mask; + + if (unlikely(!cpumask_and(&chk_mask, &p->cpus_allowed, cpu_online_mask))) + return select_fallback_rq(task_cpu(p), p); + + return task_preemptible_rq(p, &chk_mask); +} +#else /* CONFIG_SMP */ +static inline int select_task_rq(struct task_struct *p) +{ + return 0; +} +#endif /* CONFIG_SMP */ + +static void +ttwu_stat(struct task_struct *p, int cpu, int wake_flags) +{ + struct rq *rq; + + if (!schedstat_enabled()) + return; + + rq= this_rq(); + +#ifdef CONFIG_SMP + if (cpu == rq->cpu) + __schedstat_inc(rq->ttwu_local); + else { + /** PDS ToDo: + * How to do ttwu_wake_remote + */ + } +#endif /* CONFIG_SMP */ + + __schedstat_inc(rq->ttwu_count); +} + +static inline void ttwu_activate(struct task_struct *p, struct rq *rq) +{ + activate_task(p, rq); + + /* + * if a worker is waking up, notify workqueue. Note that on PDS, we + * don't really know what CPU it will be, so we fake it for + * wq_worker_waking_up :/ + */ + if (p->flags & PF_WQ_WORKER) + wq_worker_waking_up(p, cpu_of(rq)); +} + +/* + * Mark the task runnable and perform wakeup-preemption. + */ +static inline void +ttwu_do_wakeup(struct rq *rq, struct task_struct *p, int wake_flags) +{ + p->state = TASK_RUNNING; + trace_sched_wakeup(p); +} + +static inline void +ttwu_do_activate(struct rq *rq, struct task_struct *p, int wake_flags) +{ +#ifdef CONFIG_SMP + if (p->sched_contributes_to_load) + rq->nr_uninterruptible--; +#endif + + ttwu_activate(p, rq); + ttwu_do_wakeup(rq, p, 0); +} + +static int ttwu_remote(struct task_struct *p, int wake_flags) +{ + struct rq *rq; + raw_spinlock_t *lock; + int ret = 0; + + rq = __task_access_lock(p, &lock); + /* + if (task_running(p) || task_queued(p)) { + */ + if (task_on_rq_queued(p)) { + ttwu_do_wakeup(rq, p, wake_flags); + ret = 1; + } + __task_access_unlock(p, lock); + + return ret; +} + +/* + * Notes on Program-Order guarantees on SMP systems. + * + * MIGRATION + * + * The basic program-order guarantee on SMP systems is that when a task [t] + * migrates, all its activity on its old CPU [c0] happens-before any subsequent + * execution on its new CPU [c1]. + * + * For migration (of runnable tasks) this is provided by the following means: + * + * A) UNLOCK of the rq(c0)->lock scheduling out task t + * B) migration for t is required to synchronize *both* rq(c0)->lock and + * rq(c1)->lock (if not at the same time, then in that order). + * C) LOCK of the rq(c1)->lock scheduling in task + * + * Transitivity guarantees that B happens after A and C after B. + * Note: we only require RCpc transitivity. + * Note: the CPU doing B need not be c0 or c1 + * + * Example: + * + * CPU0 CPU1 CPU2 + * + * LOCK rq(0)->lock + * sched-out X + * sched-in Y + * UNLOCK rq(0)->lock + * + * LOCK rq(0)->lock // orders against CPU0 + * dequeue X + * UNLOCK rq(0)->lock + * + * LOCK rq(1)->lock + * enqueue X + * UNLOCK rq(1)->lock + * + * LOCK rq(1)->lock // orders against CPU2 + * sched-out Z + * sched-in X + * UNLOCK rq(1)->lock + * + * + * BLOCKING -- aka. SLEEP + WAKEUP + * + * For blocking we (obviously) need to provide the same guarantee as for + * migration. However the means are completely different as there is no lock + * chain to provide order. Instead we do: + * + * 1) smp_store_release(X->on_cpu, 0) + * 2) smp_cond_load_acquire(!X->on_cpu) + * + * Example: + * + * CPU0 (schedule) CPU1 (try_to_wake_up) CPU2 (schedule) + * + * LOCK rq(0)->lock LOCK X->pi_lock + * dequeue X + * sched-out X + * smp_store_release(X->on_cpu, 0); + * + * smp_cond_load_acquire(&X->on_cpu, !VAL); + * X->state = WAKING + * set_task_cpu(X,2) + * + * LOCK rq(2)->lock + * enqueue X + * X->state = RUNNING + * UNLOCK rq(2)->lock + * + * LOCK rq(2)->lock // orders against CPU1 + * sched-out Z + * sched-in X + * UNLOCK rq(2)->lock + * + * UNLOCK X->pi_lock + * UNLOCK rq(0)->lock + * + * + * However; for wakeups there is a second guarantee we must provide, namely we + * must observe the state that lead to our wakeup. That is, not only must our + * task observe its own prior state, it must also observe the stores prior to + * its wakeup. + * + * This means that any means of doing remote wakeups must order the CPU doing + * the wakeup against the CPU the task is going to end up running on. This, + * however, is already required for the regular Program-Order guarantee above, + * since the waking CPU is the one issueing the ACQUIRE (smp_cond_load_acquire). + * + */ + +/*** + * try_to_wake_up - wake up a thread + * @p: the thread to be awakened + * @state: the mask of task states that can be woken + * @wake_flags: wake modifier flags (WF_*) + * + * Put it on the run-queue if it's not already there. The "current" + * thread is always on the run-queue (except when the actual + * re-schedule is in progress), and as such you're allowed to do + * the simpler "current->state = TASK_RUNNING" to mark yourself + * runnable without the overhead of this. + * + * Return: %true if @p was woken up, %false if it was already running. + * or @state didn't match @p's state. + */ +static int try_to_wake_up(struct task_struct *p, unsigned int state, + int wake_flags) +{ + unsigned long flags; + struct rq *rq; + int cpu, success = 0; + + /* + * If we are going to wake up a thread waiting for CONDITION we + * need to ensure that CONDITION=1 done by the caller can not be + * reordered with p->state check below. This pairs with mb() in + * set_current_state() the waiting thread does. + */ + raw_spin_lock_irqsave(&p->pi_lock, flags); + smp_mb__after_spinlock(); + if (!(p->state & state)) + goto out; + + trace_sched_waking(p); + + /* We're going to change ->state: */ + success = 1; + cpu = task_cpu(p); + + /* + * Ensure we load p->on_rq _after_ p->state, otherwise it would + * be possible to, falsely, observe p->on_rq == 0 and get stuck + * in smp_cond_load_acquire() below. + * + * sched_ttwu_pending() try_to_wake_up() + * [S] p->on_rq = 1; [L] P->state + * UNLOCK rq->lock -----. + * \ + * +--- RMB + * schedule() / + * LOCK rq->lock -----' + * UNLOCK rq->lock + * + * [task p] + * [S] p->state = UNINTERRUPTIBLE [L] p->on_rq + * + * Pairs with the UNLOCK+LOCK on rq->lock from the + * last wakeup of our task and the schedule that got our task + * current. + */ + smp_rmb(); + if (p->on_rq && ttwu_remote(p, wake_flags)) + goto stat; + +#ifdef CONFIG_SMP + /* + * Ensure we load p->on_cpu _after_ p->on_rq, otherwise it would be + * possible to, falsely, observe p->on_cpu == 0. + * + * One must be running (->on_cpu == 1) in order to remove oneself + * from the runqueue. + * + * [S] ->on_cpu = 1; [L] ->on_rq + * UNLOCK rq->lock + * RMB + * LOCK rq->lock + * [S] ->on_rq = 0; [L] ->on_cpu + * + * Pairs with the full barrier implied in the UNLOCK+LOCK on rq->lock + * from the consecutive calls to schedule(); the first switching to our + * task, the second putting it to sleep. + */ + smp_rmb(); + + /* + * If the owning (remote) CPU is still in the middle of schedule() with + * this task as prev, wait until its done referencing the task. + * + * Pairs with the smp_store_release() in finish_task(). + * + * This ensures that tasks getting woken will be fully ordered against + * their previous state and preserve Program Order. + */ + smp_cond_load_acquire(&p->on_cpu, !VAL); + + p->sched_contributes_to_load = !!task_contributes_to_load(p); + p->state = TASK_WAKING; + + if (p->in_iowait) { + delayacct_blkio_end(p); + atomic_dec(&task_rq(p)->nr_iowait); + } + + /* Check IDLE tasks suitable to run normal priority */ + if (idleprio_task(p)) { + p->prio = idleprio_suitable(p)? p->normal_prio:NORMAL_PRIO; + update_task_priodl(p); + } + + cpu = select_task_rq(p); + + if (cpu != task_cpu(p)) { + wake_flags |= WF_MIGRATED; + set_task_cpu(p, cpu); + } +#else /* CONFIG_SMP */ + if (p->in_iowait) { + delayacct_blkio_end(p); + atomic_dec(&task_rq(p)->nr_iowait); + } +#endif + + rq = cpu_rq(cpu); + raw_spin_lock(&rq->lock); + + update_rq_clock(rq); + ttwu_do_activate(rq, p, wake_flags); + check_preempt_curr(rq, p); + + raw_spin_unlock(&rq->lock); + +stat: + ttwu_stat(p, cpu, wake_flags); +out: + raw_spin_unlock_irqrestore(&p->pi_lock, flags); + + return success; +} + +/** + * try_to_wake_up_local - try to wake up a local task with rq lock held + * @p: the thread to be awakened + * + * Put @p on the run-queue if it's not already there. The caller must + * ensure that local rq is locked and, @p is not the current task. + */ +static void try_to_wake_up_local(struct task_struct *p) +{ + struct rq *rq = task_rq(p); + + if (WARN_ON_ONCE(rq != this_rq()) || + WARN_ON_ONCE(p == current)) + return; + + lockdep_assert_held(&rq->lock); + + if (!raw_spin_trylock(&p->pi_lock)) { + /* + * This is OK, because current is on_cpu, which avoids it being + * picked for load-balance and preemption/IRQs are still + * disabled avoiding further scheduler activity on it and we've + * not yet picked a replacement task. + */ + raw_spin_unlock(&rq->lock); + raw_spin_lock(&p->pi_lock); + raw_spin_lock(&rq->lock); + } + + if (!(p->state & TASK_NORMAL)) + goto out; + + trace_sched_waking(p); + + if (!task_queued(p)) { + if (p->in_iowait) { + delayacct_blkio_end(p); + atomic_dec(&task_rq(p)->nr_iowait); + } + + ttwu_activate(p, rq); + } + + ttwu_do_wakeup(rq, p, 0); + ttwu_stat(p, smp_processor_id(), 0); + +out: + raw_spin_unlock(&p->pi_lock); +} + +/** + * wake_up_process - Wake up a specific process + * @p: The process to be woken up. + * + * Attempt to wake up the nominated process and move it to the set of runnable + * processes. + * + * Return: 1 if the process was woken up, 0 if it was already running. + * + * It may be assumed that this function implies a write memory barrier before + * changing the task state if and only if any tasks are woken up. + */ +int wake_up_process(struct task_struct *p) +{ + return try_to_wake_up(p, TASK_NORMAL, 0); +} +EXPORT_SYMBOL(wake_up_process); + +int wake_up_state(struct task_struct *p, unsigned int state) +{ + return try_to_wake_up(p, state, 0); +} + +static void time_slice_expired(struct task_struct *p, struct rq *rq); + +/* + * Perform scheduler related setup for a newly forked process p. + * p is forked by current. + */ +int sched_fork(unsigned long __maybe_unused clone_flags, struct task_struct *p) +{ + unsigned long flags; + int cpu = get_cpu(); + struct rq *rq = this_rq(); + +#ifdef CONFIG_PREEMPT_NOTIFIERS + INIT_HLIST_HEAD(&p->preempt_notifiers); +#endif + /* Should be reset in fork.c but done here for ease of PDS patching */ + p->on_cpu = + p->on_rq = + p->utime = + p->stime = + p->sched_time = 0; + + p->sl_level = pds_skiplist_random_level(p); + INIT_SKIPLIST_NODE(&p->sl_node); + + /* + * We mark the process as NEW here. This guarantees that + * nobody will actually run it, and a signal or other external + * event cannot wake it up and insert it on the runqueue either. + */ + p->state = TASK_NEW; + + /* + * Make sure we do not leak PI boosting priority to the child. + */ + p->prio = current->normal_prio; + + /* + * Revert to default priority/policy on fork if requested. + */ + if (unlikely(p->sched_reset_on_fork)) { + if (p->policy == SCHED_FIFO || p->policy == SCHED_RR) { + p->policy = SCHED_NORMAL; + p->normal_prio = normal_prio(p); + } + + if (PRIO_TO_NICE(p->static_prio) < 0) { + p->static_prio = NICE_TO_PRIO(0); + p->normal_prio = p->static_prio; + } + + p->prio = p->normal_prio; + + /* + * We don't need the reset flag anymore after the fork. It has + * fulfilled its duty: + */ + p->sched_reset_on_fork = 0; + } + + /* + * Share the timeslice between parent and child, thus the + * total amount of pending timeslices in the system doesn't change, + * resulting in more scheduling fairness. But this limited the fork + * boost in one time slice. So punishment for run queue time slice only + * apply to IDLE and BATCH policy tasks. + * If it's negative, it won't matter since that's the same as being 0. + * as is its last_ran value. + */ + if (likely(p->policy != SCHED_FIFO)) { + raw_spin_lock_irqsave(&rq->lock, flags); + if (idleprio_task(p) || batch_task(p)) { + rq->curr->time_slice /= 2; + p->time_slice = rq->curr->time_slice; +#ifdef CONFIG_SCHED_HRTICK + hrtick_start(rq, rq->curr->time_slice); +#endif + } else + p->time_slice = rq->curr->time_slice / 2; + + if (p->time_slice < RESCHED_US) { + update_rq_clock(rq); + time_slice_expired(p, rq); + } else { + /* + * child should has earlier deadline than parent, + * which will do child-runs-first in anticipation + * of an exec. usually avoids a lot of COW overhead. + */ + p->deadline -= MIN_VISIBLE_DEADLINE; + update_task_priodl(p); + } + raw_spin_unlock_irqrestore(&rq->lock, flags); + } else + update_task_priodl(p); + + /* + * The child is not yet in the pid-hash so no cgroup attach races, + * and the cgroup is pinned to this child due to cgroup_fork() + * is ran before sched_fork(). + * + * Silence PROVE_RCU. + */ + raw_spin_lock_irqsave(&p->pi_lock, flags); + /* + * We're setting the CPU for the first time, we don't migrate, + * so use __set_task_cpu(). + */ + __set_task_cpu(p, cpu); + raw_spin_unlock_irqrestore(&p->pi_lock, flags); + +#ifdef CONFIG_SCHED_INFO + if (unlikely(sched_info_on())) + memset(&p->sched_info, 0, sizeof(p->sched_info)); +#endif + init_task_preempt_count(p); + + put_cpu(); + return 0; +} + +#ifdef CONFIG_SCHEDSTATS + +DEFINE_STATIC_KEY_FALSE(sched_schedstats); +static bool __initdata __sched_schedstats = false; + +static void set_schedstats(bool enabled) +{ + if (enabled) + static_branch_enable(&sched_schedstats); + else + static_branch_disable(&sched_schedstats); +} + +void force_schedstat_enabled(void) +{ + if (!schedstat_enabled()) { + pr_info("kernel profiling enabled schedstats, disable via kernel.sched_schedstats.\n"); + static_branch_enable(&sched_schedstats); + } +} + +static int __init setup_schedstats(char *str) +{ + int ret = 0; + if (!str) + goto out; + + /* + * This code is called before jump labels have been set up, so we can't + * change the static branch directly just yet. Instead set a temporary + * variable so init_schedstats() can do it later. + */ + if (!strcmp(str, "enable")) { + __sched_schedstats = true; + ret = 1; + } else if (!strcmp(str, "disable")) { + __sched_schedstats = false; + ret = 1; + } +out: + if (!ret) + pr_warn("Unable to parse schedstats=\n"); + + return ret; +} +__setup("schedstats=", setup_schedstats); + +static void __init init_schedstats(void) +{ + set_schedstats(__sched_schedstats); +} + +#ifdef CONFIG_PROC_SYSCTL +int sysctl_schedstats(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, loff_t *ppos) +{ + struct ctl_table t; + int err; + int state = static_branch_likely(&sched_schedstats); + + if (write && !capable(CAP_SYS_ADMIN)) + return -EPERM; + + t = *table; + t.data = &state; + err = proc_dointvec_minmax(&t, write, buffer, lenp, ppos); + if (err < 0) + return err; + if (write) + set_schedstats(state); + return err; +} +#endif /* CONFIG_PROC_SYSCTL */ +#else /* !CONFIG_SCHEDSTATS */ +static inline void init_schedstats(void) {} +#endif /* CONFIG_SCHEDSTATS */ + +/* + * wake_up_new_task - wake up a newly created task for the first time. + * + * This function will do some initial scheduler statistics housekeeping + * that must be done for every newly created context, then puts the task + * on the runqueue and wakes it. + */ +void wake_up_new_task(struct task_struct *p) +{ + unsigned long flags; + struct rq *rq; + + raw_spin_lock_irqsave(&p->pi_lock, flags); + + p->state = TASK_RUNNING; + + rq = cpu_rq(select_task_rq(p)); +#ifdef CONFIG_SMP + /* + * Fork balancing, do it here and not earlier because: + * - cpus_allowed can change in the fork path + * - any previously selected CPU might disappear through hotplug + * Use __set_task_cpu() to avoid calling sched_class::migrate_task_rq, + * as we're not fully set-up yet. + */ + __set_task_cpu(p, cpu_of(rq)); +#endif + + raw_spin_lock(&rq->lock); + + update_rq_clock(rq); + activate_task(p, rq); + trace_sched_wakeup_new(p); + check_preempt_curr(rq, p); + + raw_spin_unlock(&rq->lock); + raw_spin_unlock_irqrestore(&p->pi_lock, flags); +} + +#ifdef CONFIG_PREEMPT_NOTIFIERS + +static DEFINE_STATIC_KEY_FALSE(preempt_notifier_key); + +void preempt_notifier_inc(void) +{ + static_branch_inc(&preempt_notifier_key); +} +EXPORT_SYMBOL_GPL(preempt_notifier_inc); + +void preempt_notifier_dec(void) +{ + static_branch_dec(&preempt_notifier_key); +} +EXPORT_SYMBOL_GPL(preempt_notifier_dec); + +/** + * preempt_notifier_register - tell me when current is being preempted & rescheduled + * @notifier: notifier struct to register + */ +void preempt_notifier_register(struct preempt_notifier *notifier) +{ + if (!static_branch_unlikely(&preempt_notifier_key)) + WARN(1, "registering preempt_notifier while notifiers disabled\n"); + + hlist_add_head(¬ifier->link, ¤t->preempt_notifiers); +} +EXPORT_SYMBOL_GPL(preempt_notifier_register); + +/** + * preempt_notifier_unregister - no longer interested in preemption notifications + * @notifier: notifier struct to unregister + * + * This is *not* safe to call from within a preemption notifier. + */ +void preempt_notifier_unregister(struct preempt_notifier *notifier) +{ + hlist_del(¬ifier->link); +} +EXPORT_SYMBOL_GPL(preempt_notifier_unregister); + +static void __fire_sched_in_preempt_notifiers(struct task_struct *curr) +{ + struct preempt_notifier *notifier; + + hlist_for_each_entry(notifier, &curr->preempt_notifiers, link) + notifier->ops->sched_in(notifier, raw_smp_processor_id()); +} + +static __always_inline void fire_sched_in_preempt_notifiers(struct task_struct *curr) +{ + if (static_branch_unlikely(&preempt_notifier_key)) + __fire_sched_in_preempt_notifiers(curr); +} + +static void +__fire_sched_out_preempt_notifiers(struct task_struct *curr, + struct task_struct *next) +{ + struct preempt_notifier *notifier; + + hlist_for_each_entry(notifier, &curr->preempt_notifiers, link) + notifier->ops->sched_out(notifier, next); +} + +static __always_inline void +fire_sched_out_preempt_notifiers(struct task_struct *curr, + struct task_struct *next) +{ + if (static_branch_unlikely(&preempt_notifier_key)) + __fire_sched_out_preempt_notifiers(curr, next); +} + +#else /* !CONFIG_PREEMPT_NOTIFIERS */ + +static inline void fire_sched_in_preempt_notifiers(struct task_struct *curr) +{ +} + +static inline void +fire_sched_out_preempt_notifiers(struct task_struct *curr, + struct task_struct *next) +{ +} + +#endif /* CONFIG_PREEMPT_NOTIFIERS */ + +static inline void prepare_task(struct task_struct *next) +{ + /* + * Claim the task as running, we do this before switching to it + * such that any running task will have this set. + */ + next->on_cpu = 1; +} + +static inline void finish_task(struct task_struct *prev) +{ +#ifdef CONFIG_SMP + /* + * After ->on_cpu is cleared, the task can be moved to a different CPU. + * We must ensure this doesn't happen until the switch is completely + * finished. + * + * In particular, the load of prev->state in finish_task_switch() must + * happen before this. + * + * Pairs with the smp_cond_load_acquire() in try_to_wake_up(). + */ + smp_store_release(&prev->on_cpu, 0); +#else + prev->on_cpu = 0; +#endif +} + +static inline void +prepare_lock_switch(struct rq *rq, struct task_struct *next) +{ + /* + * Since the runqueue lock will be released by the next + * task (which is an invalid locking op but in the case + * of the scheduler it's an obvious special-case), so we + * do an early lockdep release here: + */ + spin_release(&rq->lock.dep_map, 1, _THIS_IP_); +#ifdef CONFIG_DEBUG_SPINLOCK + /* this is a valid case when another task releases the spinlock */ + rq->lock.owner = next; +#endif +} + +static inline void finish_lock_switch(struct rq *rq) +{ + /* + * If we are tracking spinlock dependencies then we have to + * fix up the runqueue lock - which gets 'carried over' from + * prev into current: + */ + spin_acquire(&rq->lock.dep_map, 0, 0, _THIS_IP_); + raw_spin_unlock_irq(&rq->lock); +} + +/** + * prepare_task_switch - prepare to switch tasks + * @rq: the runqueue preparing to switch + * @next: the task we are going to switch to. + * + * This is called with the rq lock held and interrupts off. It must + * be paired with a subsequent finish_task_switch after the context + * switch. + * + * prepare_task_switch sets up locking and calls architecture specific + * hooks. + */ +static inline void +prepare_task_switch(struct rq *rq, struct task_struct *prev, + struct task_struct *next) +{ + kcov_prepare_switch(prev); + sched_info_switch(rq, prev, next); + perf_event_task_sched_out(prev, next); + rseq_preempt(prev); + fire_sched_out_preempt_notifiers(prev, next); + prepare_task(next); + prepare_arch_switch(next); +} + +/** + * finish_task_switch - clean up after a task-switch + * @rq: runqueue associated with task-switch + * @prev: the thread we just switched away from. + * + * finish_task_switch must be called after the context switch, paired + * with a prepare_task_switch call before the context switch. + * finish_task_switch will reconcile locking set up by prepare_task_switch, + * and do any other architecture-specific cleanup actions. + * + * Note that we may have delayed dropping an mm in context_switch(). If + * so, we finish that here outside of the runqueue lock. (Doing it + * with the lock held can cause deadlocks; see schedule() for + * details.) + * + * The context switch have flipped the stack from under us and restored the + * local variables which were saved when this task called schedule() in the + * past. prev == current is still correct but we need to recalculate this_rq + * because prev may have moved to another CPU. + */ +static struct rq *finish_task_switch(struct task_struct *prev) + __releases(rq->lock) +{ + struct rq *rq = this_rq(); + struct mm_struct *mm = rq->prev_mm; + long prev_state; + + /* + * The previous task will have left us with a preempt_count of 2 + * because it left us after: + * + * schedule() + * preempt_disable(); // 1 + * __schedule() + * raw_spin_lock_irq(&rq->lock) // 2 + * + * Also, see FORK_PREEMPT_COUNT. + */ + if (WARN_ONCE(preempt_count() != 2*PREEMPT_DISABLE_OFFSET, + "corrupted preempt_count: %s/%d/0x%x\n", + current->comm, current->pid, preempt_count())) + preempt_count_set(FORK_PREEMPT_COUNT); + + rq->prev_mm = NULL; + + /* + * A task struct has one reference for the use as "current". + * If a task dies, then it sets TASK_DEAD in tsk->state and calls + * schedule one last time. The schedule call will never return, and + * the scheduled task must drop that reference. + * + * We must observe prev->state before clearing prev->on_cpu (in + * finish_task), otherwise a concurrent wakeup can get prev + * running on another CPU and we could rave with its RUNNING -> DEAD + * transition, resulting in a double drop. + */ + prev_state = prev->state; + vtime_task_switch(prev); + perf_event_task_sched_in(prev, current); + finish_task(prev); + finish_lock_switch(rq); + finish_arch_post_lock_switch(); + kcov_finish_switch(current); + + fire_sched_in_preempt_notifiers(current); + /* + * When switching through a kernel thread, the loop in + * membarrier_{private,global}_expedited() may have observed that + * kernel thread and not issued an IPI. It is therefore possible to + * schedule between user->kernel->user threads without passing though + * switch_mm(). Membarrier requires a barrier after storing to + * rq->curr, before returning to userspace, so provide them here: + * + * - a full memory barrier for {PRIVATE,GLOBAL}_EXPEDITED, implicitly + * provided by mmdrop(), + * - a sync_core for SYNC_CORE. + */ + if (mm) { + membarrier_mm_sync_core_before_usermode(mm); + mmdrop(mm); + } + if (unlikely(prev_state == TASK_DEAD)) { + /* + * Remove function-return probe instances associated with this + * task and put them back on the free list. + */ + kprobe_flush_task(prev); + + /* Task is done with its stack. */ + put_task_stack(prev); + + put_task_struct(prev); + } + + tick_nohz_task_switch(); + return rq; +} + +/** + * schedule_tail - first thing a freshly forked thread must call. + * @prev: the thread we just switched away from. + */ +asmlinkage __visible void schedule_tail(struct task_struct *prev) + __releases(rq->lock) +{ + struct rq *rq; + + /* + * New tasks start with FORK_PREEMPT_COUNT, see there and + * finish_task_switch() for details. + * + * finish_task_switch() will drop rq->lock() and lower preempt_count + * and the preempt_enable() will end up enabling preemption (on + * PREEMPT_COUNT kernels). + */ + + rq = finish_task_switch(prev); + preempt_enable(); + + if (current->set_child_tid) + put_user(task_pid_vnr(current), current->set_child_tid); +} + +/* + * context_switch - switch to the new MM and the new thread's register state. + */ +static __always_inline struct rq * +context_switch(struct rq *rq, struct task_struct *prev, + struct task_struct *next) +{ + struct mm_struct *mm, *oldmm; + + prepare_task_switch(rq, prev, next); + + mm = next->mm; + oldmm = prev->active_mm; + /* + * For paravirt, this is coupled with an exit in switch_to to + * combine the page table reload and the switch backend into + * one hypercall. + */ + arch_start_context_switch(prev); + + /* + * If mm is non-NULL, we pass through switch_mm(). If mm is + * NULL, we will pass through mmdrop() in finish_task_switch(). + * Both of these contain the full memory barrier required by + * membarrier after storing to rq->curr, before returning to + * user-space. + */ + if (!mm) { + next->active_mm = oldmm; + mmgrab(oldmm); + enter_lazy_tlb(oldmm, next); + } else + switch_mm_irqs_off(oldmm, mm, next); + + if (!prev->mm) { + prev->active_mm = NULL; + rq->prev_mm = oldmm; + } + + prepare_lock_switch(rq, next); + + /* Here we just switch the register state and the stack. */ + switch_to(prev, next, prev); + barrier(); + + return finish_task_switch(prev); +} + +/* + * nr_running, nr_uninterruptible and nr_context_switches: + * + * externally visible scheduler statistics: current number of runnable + * threads, total number of context switches performed since bootup. + */ +unsigned long nr_running(void) +{ + unsigned long i, sum = 0; + + for_each_online_cpu(i) + sum += cpu_rq(i)->nr_running; + + return sum; +} + +/* + * Check if only the current task is running on the CPU. + * + * Caution: this function does not check that the caller has disabled + * preemption, thus the result might have a time-of-check-to-time-of-use + * race. The caller is responsible to use it correctly, for example: + * + * - from a non-preemptable section (of course) + * + * - from a thread that is bound to a single CPU + * + * - in a loop with very short iterations (e.g. a polling loop) + */ +bool single_task_running(void) +{ + return raw_rq()->nr_running == 1; +} +EXPORT_SYMBOL(single_task_running); + +unsigned long long nr_context_switches(void) +{ + int i; + unsigned long long sum = 0; + + for_each_possible_cpu(i) + sum += cpu_rq(i)->nr_switches; + + return sum; +} + +/* + * IO-wait accounting, and how its mostly bollocks (on SMP). + * + * The idea behind IO-wait account is to account the idle time that we could + * have spend running if it were not for IO. That is, if we were to improve the + * storage performance, we'd have a proportional reduction in IO-wait time. + * + * This all works nicely on UP, where, when a task blocks on IO, we account + * idle time as IO-wait, because if the storage were faster, it could've been + * running and we'd not be idle. + * + * This has been extended to SMP, by doing the same for each CPU. This however + * is broken. + * + * Imagine for instance the case where two tasks block on one CPU, only the one + * CPU will have IO-wait accounted, while the other has regular idle. Even + * though, if the storage were faster, both could've ran at the same time, + * utilising both CPUs. + * + * This means, that when looking globally, the current IO-wait accounting on + * SMP is a lower bound, by reason of under accounting. + * + * Worse, since the numbers are provided per CPU, they are sometimes + * interpreted per CPU, and that is nonsensical. A blocked task isn't strictly + * associated with any one particular CPU, it can wake to another CPU than it + * blocked on. This means the per CPU IO-wait number is meaningless. + * + * Task CPU affinities can make all that even more 'interesting'. + */ + +unsigned long nr_iowait(void) +{ + unsigned long i, sum = 0; + + for_each_possible_cpu(i) + sum += atomic_read(&cpu_rq(i)->nr_iowait); + + return sum; +} + +/* + * Consumers of these two interfaces, like for example the cpufreq menu + * governor are using nonsensical data. Boosting frequency for a CPU that has + * IO-wait which might not even end up running the task when it does become + * runnable. + */ + +unsigned long nr_iowait_cpu(int cpu) +{ + struct rq *this = cpu_rq(cpu); + return atomic_read(&this->nr_iowait); +} + +/* Beyond a task running on this CPU, load is equal everywhere on PDS, so we + * base it on the number of running or queued tasks with their ->rq pointer + * set to this CPU as being the CPU they're more likely to run on. */ +void get_iowait_load(unsigned long *nr_waiters, unsigned long *load) +{ + struct rq *rq = this_rq(); + + *nr_waiters = atomic_read(&rq->nr_iowait); + *load = rq->nr_running; +} + +DEFINE_PER_CPU(struct kernel_stat, kstat); +DEFINE_PER_CPU(struct kernel_cpustat, kernel_cpustat); + +EXPORT_PER_CPU_SYMBOL(kstat); +EXPORT_PER_CPU_SYMBOL(kernel_cpustat); + +static inline void pds_update_curr(struct rq *rq, struct task_struct *p) +{ + s64 ns = rq->clock_task - p->last_ran; + + p->sched_time += ns; + account_group_exec_runtime(p, ns); + + /* time_slice accounting is done in usecs to avoid overflow on 32bit */ + if (likely(p->policy != SCHED_FIFO)) + p->time_slice -= NS_TO_US(ns); + p->last_ran = rq->clock_task; +} + +/* + * Return accounted runtime for the task. + * Return separately the current's pending runtime that have not been + * accounted yet. + */ +unsigned long long task_sched_runtime(struct task_struct *p) +{ + unsigned long flags; + struct rq *rq; + raw_spinlock_t *lock; + u64 ns; + +#if defined(CONFIG_64BIT) && defined(CONFIG_SMP) + /* + * 64-bit doesn't need locks to atomically read a 64-bit value. + * So we have a optimization chance when the task's delta_exec is 0. + * Reading ->on_cpu is racy, but this is ok. + * + * If we race with it leaving CPU, we'll take a lock. So we're correct. + * If we race with it entering CPU, unaccounted time is 0. This is + * indistinguishable from the read occurring a few cycles earlier. + * If we see ->on_cpu without ->on_rq, the task is leaving, and has + * been accounted, so we're correct here as well. + */ + if (!p->on_cpu || !task_on_rq_queued(p)) + return tsk_seruntime(p); +#endif + + rq = task_access_lock_irqsave(p, &lock, &flags); + /* + * Must be ->curr _and_ ->on_rq. If dequeued, we would + * project cycles that may never be accounted to this + * thread, breaking clock_gettime(). + */ + if (p == rq->curr && task_on_rq_queued(p)) { + update_rq_clock(rq); + pds_update_curr(rq, p); + } + ns = tsk_seruntime(p); + task_access_unlock_irqrestore(p, lock, &flags); + + return ns; +} + +/* + * Functions to test for when SCHED_ISO tasks have used their allocated + * quota as real time scheduling and convert them back to SCHED_NORMAL. + * Where possible, the data is tested lockless, to avoid grabbing iso_lock + * because the occasional inaccurate result won't matter. However the + * tick data is only ever modified under lock. iso_refractory is only simply + * set to 0 or 1 so it's not worth grabbing the lock yet again for that. + */ + +/* + * Test if SCHED_ISO tasks have run longer than their alloted period as RT + * tasks and set the refractory flag if necessary. There is 10% hysteresis + * for unsetting the flag. 115/128 is ~90/100 as a fast shift instead of a + * slow division. + */ +static inline bool test_ret_isorefractory(struct rq *rq) +{ + if (likely(!rq->iso_refractory)) { + if (rq->iso_ticks > ISO_PERIOD * sched_iso_cpu) + return (rq->iso_refractory = true); + } else { + if (rq->iso_ticks < ISO_PERIOD * (sched_iso_cpu * 115 / 128)) + return (rq->iso_refractory = false); + } + return rq->iso_refractory; +} + +static inline void iso_tick(struct rq *rq) +{ + rq->iso_ticks += 100; +} + +/* No SCHED_ISO task was running so decrease rq->iso_ticks */ +static inline void no_iso_tick(struct rq *rq) +{ + if (rq->iso_ticks) { + rq->iso_ticks -= rq->iso_ticks / ISO_PERIOD + 1; + if (unlikely(rq->iso_refractory && rq->iso_ticks < + ISO_PERIOD * (sched_iso_cpu * 115 / 128))) + rq->iso_refractory = false; + } +} + +/* This manages tasks that have run out of timeslice during a scheduler_tick */ +static inline void pds_scheduler_task_tick(struct rq *rq) +{ + struct task_struct *p = rq->curr; + + if (is_idle_task(p)) + return; + + pds_update_curr(rq, p); + + cpufreq_update_util(rq, 0); + /* + * If a SCHED_ISO task is running we increment the iso_ticks. In + * order to prevent SCHED_ISO tasks from causing starvation in the + * presence of true RT tasks we account those as iso_ticks as well. + */ + if (unlikely(rt_task(p) || task_running_iso(p))) { + if (rq->iso_ticks <= (ISO_PERIOD * 128) - 128) + iso_tick(rq); + } else + no_iso_tick(rq); + + if (unlikely(iso_task(p))) { + if (unlikely(test_ret_isorefractory(rq))) { + if (task_running_iso(p)) { + /* + * SCHED_ISO task is running as RT and limit + * has been hit. Force it to reschedule as + * SCHED_NORMAL by zeroing its time_slice + */ + p->time_slice = 0; + } + } + } + + /* SCHED_FIFO tasks never run out of timeslice. */ + if (unlikely(p->policy == SCHED_FIFO)) + return; + /* + * Tasks that were scheduled in the first half of a tick are not + * allowed to run into the 2nd half of the next tick if they will + * run out of time slice in the interim. Otherwise, if they have + * less than RESCHED_US μs of time slice left they will be rescheduled. + */ + if (p->time_slice - rq->dither >= RESCHED_US) + return; + + /** + * p->time_slice < RESCHED_US. We will modify task_struct under + * rq lock as p is rq->curr + */ + __set_tsk_resched(p); +} + +#ifdef CONFIG_SMP + +#ifdef CONFIG_SCHED_SMT +static int active_load_balance_cpu_stop(void *data) +{ + struct rq *origin_rq, *rq = this_rq(); + struct task_struct *p = data; + cpumask_t tmp; + unsigned long flags; + + origin_rq = rq; + local_irq_save(flags); + + raw_spin_lock(&p->pi_lock); + raw_spin_lock(&rq->lock); + + /* + * _something_ may have changed the task, double check again + */ + if (task_queued(p) && task_rq(p) == rq && + cpumask_and(&tmp, &p->cpus_allowed, &sched_cpu_sg_idle_mask)) + rq = __migrate_task(rq, p, cpumask_any(&tmp)); + + origin_rq->active_balance = 0; + + raw_spin_unlock(&rq->lock); + raw_spin_unlock(&p->pi_lock); + + local_irq_restore(flags); + + return 0; +} + +static __latent_entropy void pds_run_rebalance(struct softirq_action *h) +{ + struct rq *this_rq = this_rq(); + unsigned long flags; + struct task_struct *curr; + cpumask_t tmp; + + raw_spin_lock_irqsave(&this_rq->lock, flags); + curr = this_rq->curr; + if (cpumask_and(&tmp, &curr->cpus_allowed, &sched_cpu_sg_idle_mask)) { + int active_balance = 0; + + if (likely(!this_rq->active_balance)) { + this_rq->active_balance = 1; + active_balance = 1; + } + + raw_spin_unlock_irqrestore(&this_rq->lock, flags); + + if (likely(active_balance)) + stop_one_cpu_nowait(cpu_of(this_rq), + active_load_balance_cpu_stop, curr, + &this_rq->active_balance_work); + } else + raw_spin_unlock_irqrestore(&this_rq->lock, flags); +} + +static inline bool pds_sg_balance(struct rq *rq) +{ + int cpu; + struct task_struct *p; + + /* + * Quick exit if no idle sibling group to be balanced to, or + * in case cpu has no smt capability, which sched_cpu_sg_idle_mask will + * not be changed. + */ + if (cpumask_empty(&sched_cpu_sg_idle_mask)) + return false; + + /* + * First cpu in smt group does not do smt balance + */ + cpu = cpu_of(rq); + if (cpu == per_cpu(sd_llc_id, cpu)) + return false; + + /* + * Exit if any idle cpu in this smt group + */ + if (cpumask_intersects(cpu_smt_mask(cpu), + &sched_rq_queued_masks[SCHED_RQ_EMPTY])) + return false; + + p = rq->curr; + if (cpumask_intersects(&p->cpus_allowed, &sched_cpu_sg_idle_mask)) { + raise_softirq(SCHED_SOFTIRQ); + return true; + } + + return false; +} +#endif /* CONFIG_SCHED_SMT */ + +/** + * PDS load balance function, be called in scheduler_tick() + * + * return: true if balance happened and rq->lock released, otherwise false. + * context: interrupt disabled, rq->lock + */ +static inline bool pds_load_balance(struct rq *rq) +{ + int level, pending_level, cpu = cpu_of(rq); + struct skiplist_node *node; + struct task_struct *p; + cpumask_t check; + + if (cpu != + ((NS_TO_MS(rq->clock) & sched_balance_mask) >> sched_balance_shift)) + return false; + + /* + * this function is called when rq is locked and nr_running >= 2 + */ + node = rq->sl_header.next[0]->next[0]; + p = skiplist_entry(node, struct task_struct, sl_node); + + /* + * balance preempt start from SCHED_RQ_IDLE mask, + * SCHED_RQ_EMPTY mask should be handled in ttwu + */ + level = find_next_bit(sched_rq_queued_masks_bitmap, + NR_SCHED_RQ_QUEUED_LEVEL, SCHED_RQ_IDLE); + pending_level = task_running_policy_level(p, rq); + + if (level >= pending_level) + return false; + + if (cpumask_and(&check, &sched_rq_queued_masks[level], + &p->cpus_allowed)) { + WARN_ONCE(cpumask_test_cpu(cpu_of(rq), &check), + "pds: %d - %d, %d, %llu %d, %d, %llu", + level, + pending_level, p->prio, p->deadline, + task_running_policy_level(rq->curr, rq), + rq->curr->prio, rq->curr->deadline); + + raw_spin_unlock(&rq->lock); + raw_spin_lock(&p->pi_lock); + raw_spin_lock(&rq->lock); + + /* + * _something_ may have changed the task, double check again + */ + if (likely(!p->on_cpu && task_on_rq_queued(p) && rq == task_rq(p))) + rq = __migrate_task(rq, p, best_mask_cpu(cpu, &check)); + + raw_spin_unlock(&rq->lock); + raw_spin_unlock(&p->pi_lock); + + return true; + } + + return false; +} + +static inline bool pds_trigger_balance(struct rq *rq) +{ + if (0 == rq->nr_running) + return false; + + /* + * Sibling balance only happens when only one task is running + * When no task is running, there will be no need to balance + * When there are queued tasks in this rq, they will be handled + * in policy fair balance + */ + if (1 == rq->nr_running) { +#ifdef CONFIG_SCHED_SMT + pds_sg_balance(rq); +#endif + return false; + } else { + return pds_load_balance(rq); + } +} +#endif /* CONFIG_SMP */ + +/* + * This function gets called by the timer code, with HZ frequency. + * We call it with interrupts disabled. + */ +void scheduler_tick(void) +{ + int cpu __maybe_unused = smp_processor_id(); + struct rq *rq = cpu_rq(cpu); + + sched_clock_tick(); + + raw_spin_lock(&rq->lock); + update_rq_clock(rq); + + pds_scheduler_task_tick(rq); + update_sched_rq_queued_masks_normal(rq); + calc_global_load_tick(rq); + rq->last_tick = rq->clock; + +#ifdef CONFIG_SMP + if (!pds_trigger_balance(rq)) +#endif + raw_spin_unlock(&rq->lock); + + perf_event_task_tick(); +} + +#ifdef CONFIG_NO_HZ_FULL +struct tick_work { + int cpu; + struct delayed_work work; +}; + +static struct tick_work __percpu *tick_work_cpu; + +static void sched_tick_remote(struct work_struct *work) +{ + struct delayed_work *dwork = to_delayed_work(work); + struct tick_work *twork = container_of(dwork, struct tick_work, work); + int cpu = twork->cpu; + struct rq *rq = cpu_rq(cpu); + struct task_struct *curr; + unsigned long flags; + u64 delta; + + /* + * Handle the tick only if it appears the remote CPU is running in full + * dynticks mode. The check is racy by nature, but missing a tick or + * having one too much is no big deal because the scheduler tick updates + * statistics and checks timeslices in a time-independent way, regardless + * of when exactly it is running. + */ + if (idle_cpu(cpu) || !tick_nohz_tick_stopped_cpu(cpu)) + goto out_requeue; + + raw_spin_lock_irqsave(&rq->lock, flags); + curr = rq->curr; + + if (is_idle_task(curr)) + goto out_unlock; + + update_rq_clock(rq); + delta = rq_clock_task(rq) - curr->last_ran; + + /* + * Make sure the next tick runs within a reasonable + * amount of time. + */ + WARN_ON_ONCE(delta > (u64)NSEC_PER_SEC * 3); + pds_scheduler_task_tick(rq); + update_sched_rq_queued_masks_normal(rq); + +out_unlock: + raw_spin_unlock_irqrestore(&rq->lock, flags); + +out_requeue: + /* + * Run the remote tick once per second (1Hz). This arbitrary + * frequency is large enough to avoid overload but short enough + * to keep scheduler internal stats reasonably up to date. + */ + queue_delayed_work(system_unbound_wq, dwork, HZ); +} + +static void sched_tick_start(int cpu) +{ + struct tick_work *twork; + + if (housekeeping_cpu(cpu, HK_FLAG_TICK)) + return; + + WARN_ON_ONCE(!tick_work_cpu); + + twork = per_cpu_ptr(tick_work_cpu, cpu); + twork->cpu = cpu; + INIT_DELAYED_WORK(&twork->work, sched_tick_remote); + queue_delayed_work(system_unbound_wq, &twork->work, HZ); +} + +#ifdef CONFIG_HOTPLUG_CPU +static void sched_tick_stop(int cpu) +{ + struct tick_work *twork; + + if (housekeeping_cpu(cpu, HK_FLAG_TICK)) + return; + + WARN_ON_ONCE(!tick_work_cpu); + + twork = per_cpu_ptr(tick_work_cpu, cpu); + cancel_delayed_work_sync(&twork->work); +} +#endif /* CONFIG_HOTPLUG_CPU */ + +int __init sched_tick_offload_init(void) +{ + tick_work_cpu = alloc_percpu(struct tick_work); + BUG_ON(!tick_work_cpu); + + return 0; +} + +#else /* !CONFIG_NO_HZ_FULL */ +static inline void sched_tick_start(int cpu) { } +static inline void sched_tick_stop(int cpu) { } +#endif + +#if defined(CONFIG_PREEMPT) && (defined(CONFIG_DEBUG_PREEMPT) || \ + defined(CONFIG_PREEMPT_TRACER)) +/* + * If the value passed in is equal to the current preempt count + * then we just disabled preemption. Start timing the latency. + */ +static inline void preempt_latency_start(int val) +{ + if (preempt_count() == val) { + unsigned long ip = get_lock_parent_ip(); +#ifdef CONFIG_DEBUG_PREEMPT + current->preempt_disable_ip = ip; +#endif + trace_preempt_off(CALLER_ADDR0, ip); + } +} + +void preempt_count_add(int val) +{ +#ifdef CONFIG_DEBUG_PREEMPT + /* + * Underflow? + */ + if (DEBUG_LOCKS_WARN_ON((preempt_count() < 0))) + return; +#endif + __preempt_count_add(val); +#ifdef CONFIG_DEBUG_PREEMPT + /* + * Spinlock count overflowing soon? + */ + DEBUG_LOCKS_WARN_ON((preempt_count() & PREEMPT_MASK) >= + PREEMPT_MASK - 10); +#endif + preempt_latency_start(val); +} +EXPORT_SYMBOL(preempt_count_add); +NOKPROBE_SYMBOL(preempt_count_add); + +/* + * If the value passed in equals to the current preempt count + * then we just enabled preemption. Stop timing the latency. + */ +static inline void preempt_latency_stop(int val) +{ + if (preempt_count() == val) + trace_preempt_on(CALLER_ADDR0, get_lock_parent_ip()); +} + +void preempt_count_sub(int val) +{ +#ifdef CONFIG_DEBUG_PREEMPT + /* + * Underflow? + */ + if (DEBUG_LOCKS_WARN_ON(val > preempt_count())) + return; + /* + * Is the spinlock portion underflowing? + */ + if (DEBUG_LOCKS_WARN_ON((val < PREEMPT_MASK) && + !(preempt_count() & PREEMPT_MASK))) + return; +#endif + + preempt_latency_stop(val); + __preempt_count_sub(val); +} +EXPORT_SYMBOL(preempt_count_sub); +NOKPROBE_SYMBOL(preempt_count_sub); + +#else +static inline void preempt_latency_start(int val) { } +static inline void preempt_latency_stop(int val) { } +#endif + +/* + * The time_slice is only refilled when it is empty and that is when we set a + * new deadline. + */ +static void time_slice_expired(struct task_struct *p, struct rq *rq) +{ + if (unlikely(p->policy == SCHED_FIFO)) + return; + p->time_slice = timeslice(); + + if (unlikely(p->policy == SCHED_RR)) + return; + if (p->policy == SCHED_NORMAL) { + p->deadline /= 2; + p->deadline += (rq->clock + task_deadline_diff(p)) / 2; + } else + p->deadline = rq->clock + task_deadline_diff(p); + + update_task_priodl(p); +} + +/* + * Timeslices below RESCHED_US are considered as good as expired as there's no + * point rescheduling when there's so little time left. SCHED_BATCH tasks + * have been flagged be not latency sensitive and likely to be fully CPU + * bound so every time they're rescheduled they have their time_slice + * refilled, but get a new later deadline to have little effect on + * SCHED_NORMAL tasks. + + */ +static inline void check_deadline(struct task_struct *p, struct rq *rq) +{ + if (rq->idle == p) + return; + + pds_update_curr(rq, p); + + if (p->time_slice < RESCHED_US || batch_task(p)) { + time_slice_expired(p, rq); + if (task_queued(p)) + requeue_task(p, rq); + } +} + +#ifdef CONFIG_SMP + +#define SCHED_RQ_NR_MIGRATION (32UL) +/* + * Migrate pending tasks in @rq to @dest_cpu + * Will try to migrate mininal of half of @rq nr_running tasks and + * SCHED_RQ_NR_MIGRATION to @dest_cpu + */ +static inline int +migrate_pending_tasks(struct rq *rq, struct rq *dest_rq, int dest_cpu) +{ + int nr_migrated = 0; + int nr_max_tries = min(rq->nr_running / 2, SCHED_RQ_NR_MIGRATION); + struct skiplist_node *node = rq->sl_header.next[0]; + + while (nr_max_tries && node != &rq->sl_header) { + struct task_struct *p; + + /* seek to the next node */ + node = node->next[0]; + if (node == &rq->sl_header) + break; + + p = skiplist_entry(node, struct task_struct, sl_node); + node = node->next[0]; + nr_max_tries--; + + /* skip the running task and check CPU affinity */ + if (!task_running(p) && + cpumask_test_cpu(dest_cpu, &p->cpus_allowed)) { + detach_task(rq, p, dest_cpu); + attach_task(dest_rq, p); + nr_migrated++; + } + } + + return nr_migrated; +} + +static inline struct task_struct * +take_queued_task_cpumask(struct rq *rq, int cpu, struct cpumask *chk_mask) +{ + int src_cpu; + + for_each_cpu(src_cpu, chk_mask) { + int nr_migrated; + struct rq *src_rq = cpu_rq(src_cpu); + + if (unlikely(!do_raw_spin_trylock(&src_rq->lock))) + continue; + spin_acquire(&src_rq->lock.dep_map, SINGLE_DEPTH_NESTING, 1, _RET_IP_); + + update_rq_clock(src_rq); + nr_migrated = migrate_pending_tasks(src_rq, rq, cpu); + + spin_release(&src_rq->lock.dep_map, 1, _RET_IP_); + do_raw_spin_unlock(&src_rq->lock); + + if (nr_migrated) { + resched_curr(rq); + return rq_first_queued_task(rq); + } + } + return NULL; +} + +static inline struct task_struct *take_other_rq_task(struct rq *rq, int cpu) +{ + struct cpumask tmp; + struct cpumask *affinity_mask, *end; + + affinity_mask = per_cpu(sched_cpu_llc_start_mask, cpu); + end = per_cpu(sched_cpu_affinity_chk_end_masks, cpu); + do { + struct task_struct *p; + if (cpumask_andnot(&tmp, affinity_mask, + &sched_rq_nr_running_masks[0]) && + (p = take_queued_task_cpumask(rq, cpu, &tmp))) + return p; + } while (++affinity_mask < end); + + return NULL; +} +#endif + +static inline struct task_struct *choose_next_task(struct rq *rq, int cpu) +{ + struct task_struct *next; + + if ((next = rq_first_queued_task(rq))) + return next; + +#ifdef CONFIG_SMP + if (likely(rq->online)) + if ((next = take_other_rq_task(rq, cpu))) + return next; +#endif + return rq->idle; +} + +static inline unsigned long get_preempt_disable_ip(struct task_struct *p) +{ +#ifdef CONFIG_DEBUG_PREEMPT + return p->preempt_disable_ip; +#else + return 0; +#endif +} + +/* + * Print scheduling while atomic bug: + */ +static noinline void __schedule_bug(struct task_struct *prev) +{ + /* Save this before calling printk(), since that will clobber it */ + unsigned long preempt_disable_ip = get_preempt_disable_ip(current); + + if (oops_in_progress) + return; + + printk(KERN_ERR "BUG: scheduling while atomic: %s/%d/0x%08x\n", + prev->comm, prev->pid, preempt_count()); + + debug_show_held_locks(prev); + print_modules(); + if (irqs_disabled()) + print_irqtrace_events(prev); + if (IS_ENABLED(CONFIG_DEBUG_PREEMPT) + && in_atomic_preempt_off()) { + pr_err("Preemption disabled at:"); + print_ip_sym(preempt_disable_ip); + pr_cont("\n"); + } + if (panic_on_warn) + panic("scheduling while atomic\n"); + + dump_stack(); + add_taint(TAINT_WARN, LOCKDEP_STILL_OK); +} + +/* + * Various schedule()-time debugging checks and statistics: + */ +static inline void schedule_debug(struct task_struct *prev) +{ +#ifdef CONFIG_SCHED_STACK_END_CHECK + if (task_stack_end_corrupted(prev)) + panic("corrupted stack end detected inside scheduler\n"); +#endif + + if (unlikely(in_atomic_preempt_off())) { + __schedule_bug(prev); + preempt_count_set(PREEMPT_DISABLED); + } + rcu_sleep_check(); + + profile_hit(SCHED_PROFILING, __builtin_return_address(0)); + + schedstat_inc(this_rq()->sched_count); +} + +static inline void set_rq_task(struct rq *rq, struct task_struct *p) +{ + p->last_ran = rq->clock_task; + +#ifdef CONFIG_HIGH_RES_TIMERS + if (!(p == rq->idle || p->policy == SCHED_FIFO)) + hrtick_start(rq, US_TO_NS(p->time_slice)); +#endif + /* update rq->dither */ + rq->dither = rq_dither(rq); +} + +/* + * schedule() is the main scheduler function. + * + * The main means of driving the scheduler and thus entering this function are: + * + * 1. Explicit blocking: mutex, semaphore, waitqueue, etc. + * + * 2. TIF_NEED_RESCHED flag is checked on interrupt and userspace return + * paths. For example, see arch/x86/entry_64.S. + * + * To drive preemption between tasks, the scheduler sets the flag in timer + * interrupt handler scheduler_tick(). + * + * 3. Wakeups don't really cause entry into schedule(). They add a + * task to the run-queue and that's it. + * + * Now, if the new task added to the run-queue preempts the current + * task, then the wakeup sets TIF_NEED_RESCHED and schedule() gets + * called on the nearest possible occasion: + * + * - If the kernel is preemptible (CONFIG_PREEMPT=y): + * + * - in syscall or exception context, at the next outmost + * preempt_enable(). (this might be as soon as the wake_up()'s + * spin_unlock()!) + * + * - in IRQ context, return from interrupt-handler to + * preemptible context + * + * - If the kernel is not preemptible (CONFIG_PREEMPT is not set) + * then at the next: + * + * - cond_resched() call + * - explicit schedule() call + * - return from syscall or exception to user-space + * - return from interrupt-handler to user-space + * + * WARNING: must be called with preemption disabled! + */ +static void __sched notrace __schedule(bool preempt) +{ + struct task_struct *prev, *next; + unsigned long *switch_count; + struct rq *rq; + int cpu; + + cpu = smp_processor_id(); + rq = cpu_rq(cpu); + prev = rq->curr; + + schedule_debug(prev); + + /* by passing sched_feat(HRTICK) checking which PDS doesn't support */ + hrtick_clear(rq); + + local_irq_disable(); + rcu_note_context_switch(preempt); + + /* + * Make sure that signal_pending_state()->signal_pending() below + * can't be reordered with __set_current_state(TASK_INTERRUPTIBLE) + * done by the caller to avoid the race with signal_wake_up(). + * + * The membarrier system call requires a full memory barrier + * after coming from user-space, before storing to rq->curr. + */ + raw_spin_lock(&rq->lock); + smp_mb__after_spinlock(); + + update_rq_clock(rq); + + switch_count = &prev->nivcsw; + if (!preempt && prev->state) { + if (unlikely(signal_pending_state(prev->state, prev))) { + prev->state = TASK_RUNNING; + } else { + deactivate_task(prev, rq); + + if (prev->in_iowait) { + atomic_inc(&rq->nr_iowait); + delayacct_blkio_start(); + } + + /* + * If a worker is going to sleep, notify and + * ask workqueue whether it wants to wake up a + * task to maintain concurrency. If so, wake + * up the task. + */ + if (prev->flags & PF_WQ_WORKER) { + struct task_struct *to_wakeup; + + to_wakeup = wq_worker_sleeping(prev); + if (to_wakeup) + try_to_wake_up_local(to_wakeup); + } + } + switch_count = &prev->nvcsw; + } + + clear_tsk_need_resched(prev); + clear_preempt_need_resched(); + + check_deadline(prev, rq); + + next = choose_next_task(rq, cpu); + + set_rq_task(rq, next); + + if (prev != next) { + if (next->prio == PRIO_LIMIT) + schedstat_inc(rq->sched_goidle); + + rq->curr = next; + /* + * The membarrier system call requires each architecture + * to have a full memory barrier after updating + * rq->curr, before returning to user-space. + * + * Here are the schemes providing that barrier on the + * various architectures: + * - mm ? switch_mm() : mmdrop() for x86, s390, sparc, PowerPC. + * switch_mm() rely on membarrier_arch_switch_mm() on PowerPC. + * - finish_lock_switch() for weakly-ordered + * architectures where spin_unlock is a full barrier, + * - switch_to() for arm64 (weakly-ordered, spin_unlock + * is a RELEASE barrier), + */ + ++*switch_count; + rq->nr_switches++; + + trace_sched_switch(preempt, prev, next); + + /* Also unlocks the rq: */ + rq = context_switch(rq, prev, next); + cpu = cpu_of(rq); + } else + raw_spin_unlock_irq(&rq->lock); +} + +void __noreturn do_task_dead(void) +{ + /* Causes final put_task_struct in finish_task_switch(): */ + set_special_state(TASK_DEAD); + + /* Tell freezer to ignore us: */ + current->flags |= PF_NOFREEZE; + __schedule(false); + + BUG(); + + /* Avoid "noreturn function does return" - but don't continue if BUG() is a NOP: */ + for (;;) + cpu_relax(); +} + +static inline void sched_submit_work(struct task_struct *tsk) +{ + if (!tsk->state || tsk_is_pi_blocked(tsk) || + signal_pending_state(tsk->state, tsk)) + return; + + /* + * If we are going to sleep and we have plugged IO queued, + * make sure to submit it to avoid deadlocks. + */ + if (blk_needs_flush_plug(tsk)) + blk_schedule_flush_plug(tsk); +} + +asmlinkage __visible void __sched schedule(void) +{ + struct task_struct *tsk = current; + + sched_submit_work(tsk); + do { + preempt_disable(); + __schedule(false); + sched_preempt_enable_no_resched(); + } while (need_resched()); +} +EXPORT_SYMBOL(schedule); + +/* + * synchronize_rcu_tasks() makes sure that no task is stuck in preempted + * state (have scheduled out non-voluntarily) by making sure that all + * tasks have either left the run queue or have gone into user space. + * As idle tasks do not do either, they must not ever be preempted + * (schedule out non-voluntarily). + * + * schedule_idle() is similar to schedule_preempt_disable() except that it + * never enables preemption because it does not call sched_submit_work(). + */ +void __sched schedule_idle(void) +{ + /* + * As this skips calling sched_submit_work(), which the idle task does + * regardless because that function is a nop when the task is in a + * TASK_RUNNING state, make sure this isn't used someplace that the + * current task can be in any other state. Note, idle is always in the + * TASK_RUNNING state. + */ + WARN_ON_ONCE(current->state); + do { + __schedule(false); + } while (need_resched()); +} + +#ifdef CONFIG_CONTEXT_TRACKING +asmlinkage __visible void __sched schedule_user(void) +{ + /* + * If we come here after a random call to set_need_resched(), + * or we have been woken up remotely but the IPI has not yet arrived, + * we haven't yet exited the RCU idle mode. Do it here manually until + * we find a better solution. + * + * NB: There are buggy callers of this function. Ideally we + * should warn if prev_state != CONTEXT_USER, but that will trigger + * too frequently to make sense yet. + */ + enum ctx_state prev_state = exception_enter(); + schedule(); + exception_exit(prev_state); +} +#endif + +/** + * schedule_preempt_disabled - called with preemption disabled + * + * Returns with preemption disabled. Note: preempt_count must be 1 + */ +void __sched schedule_preempt_disabled(void) +{ + sched_preempt_enable_no_resched(); + schedule(); + preempt_disable(); +} + +static void __sched notrace preempt_schedule_common(void) +{ + do { + /* + * Because the function tracer can trace preempt_count_sub() + * and it also uses preempt_enable/disable_notrace(), if + * NEED_RESCHED is set, the preempt_enable_notrace() called + * by the function tracer will call this function again and + * cause infinite recursion. + * + * Preemption must be disabled here before the function + * tracer can trace. Break up preempt_disable() into two + * calls. One to disable preemption without fear of being + * traced. The other to still record the preemption latency, + * which can also be traced by the function tracer. + */ + preempt_disable_notrace(); + preempt_latency_start(1); + __schedule(true); + preempt_latency_stop(1); + preempt_enable_no_resched_notrace(); + + /* + * Check again in case we missed a preemption opportunity + * between schedule and now. + */ + } while (need_resched()); +} + +#ifdef CONFIG_PREEMPT +/* + * this is the entry point to schedule() from in-kernel preemption + * off of preempt_enable. Kernel preemptions off return from interrupt + * occur there and call schedule directly. + */ +asmlinkage __visible void __sched notrace preempt_schedule(void) +{ + /* + * If there is a non-zero preempt_count or interrupts are disabled, + * we do not want to preempt the current task. Just return.. + */ + if (likely(!preemptible())) + return; + + preempt_schedule_common(); +} +NOKPROBE_SYMBOL(preempt_schedule); +EXPORT_SYMBOL(preempt_schedule); + +/** + * preempt_schedule_notrace - preempt_schedule called by tracing + * + * The tracing infrastructure uses preempt_enable_notrace to prevent + * recursion and tracing preempt enabling caused by the tracing + * infrastructure itself. But as tracing can happen in areas coming + * from userspace or just about to enter userspace, a preempt enable + * can occur before user_exit() is called. This will cause the scheduler + * to be called when the system is still in usermode. + * + * To prevent this, the preempt_enable_notrace will use this function + * instead of preempt_schedule() to exit user context if needed before + * calling the scheduler. + */ +asmlinkage __visible void __sched notrace preempt_schedule_notrace(void) +{ + enum ctx_state prev_ctx; + + if (likely(!preemptible())) + return; + + do { + /* + * Because the function tracer can trace preempt_count_sub() + * and it also uses preempt_enable/disable_notrace(), if + * NEED_RESCHED is set, the preempt_enable_notrace() called + * by the function tracer will call this function again and + * cause infinite recursion. + * + * Preemption must be disabled here before the function + * tracer can trace. Break up preempt_disable() into two + * calls. One to disable preemption without fear of being + * traced. The other to still record the preemption latency, + * which can also be traced by the function tracer. + */ + preempt_disable_notrace(); + preempt_latency_start(1); + /* + * Needs preempt disabled in case user_exit() is traced + * and the tracer calls preempt_enable_notrace() causing + * an infinite recursion. + */ + prev_ctx = exception_enter(); + __schedule(true); + exception_exit(prev_ctx); + + preempt_latency_stop(1); + preempt_enable_no_resched_notrace(); + } while (need_resched()); +} +EXPORT_SYMBOL_GPL(preempt_schedule_notrace); + +#endif /* CONFIG_PREEMPT */ + +/* + * this is the entry point to schedule() from kernel preemption + * off of irq context. + * Note, that this is called and return with irqs disabled. This will + * protect us against recursive calling from irq. + */ +asmlinkage __visible void __sched preempt_schedule_irq(void) +{ + enum ctx_state prev_state; + + /* Catch callers which need to be fixed */ + BUG_ON(preempt_count() || !irqs_disabled()); + + prev_state = exception_enter(); + + do { + preempt_disable(); + local_irq_enable(); + __schedule(true); + local_irq_disable(); + sched_preempt_enable_no_resched(); + } while (need_resched()); + + exception_exit(prev_state); +} + +int default_wake_function(wait_queue_entry_t *curr, unsigned mode, int wake_flags, + void *key) +{ + return try_to_wake_up(curr->private, mode, wake_flags); +} +EXPORT_SYMBOL(default_wake_function); + +static inline void +check_task_changed(struct rq *rq, struct task_struct *p) +{ + /* + * Trigger changes when task priority/deadline modified. + */ + if (task_queued(p)) { + struct task_struct *first; + + requeue_task(p, rq); + + /* Resched if first queued task not running and not IDLE */ + if ((first = rq_first_queued_task(rq)) != rq->curr && + !task_running_idle(first)) + resched_curr(rq); + } +} + +#ifdef CONFIG_RT_MUTEXES + +static inline int __rt_effective_prio(struct task_struct *pi_task, int prio) +{ + if (pi_task) + prio = min(prio, pi_task->prio); + + return prio; +} + +static inline int rt_effective_prio(struct task_struct *p, int prio) +{ + struct task_struct *pi_task = rt_mutex_get_top_task(p); + + return __rt_effective_prio(pi_task, prio); +} + +/* + * rt_mutex_setprio - set the current priority of a task + * @p: task to boost + * @pi_task: donor task + * + * This function changes the 'effective' priority of a task. It does + * not touch ->normal_prio like __setscheduler(). + * + * Used by the rt_mutex code to implement priority inheritance + * logic. Call site only calls if the priority of the task changed. + */ +void rt_mutex_setprio(struct task_struct *p, struct task_struct *pi_task) +{ + int prio; + struct rq *rq; + raw_spinlock_t *lock; + + /* XXX used to be waiter->prio, not waiter->task->prio */ + prio = __rt_effective_prio(pi_task, p->normal_prio); + + /* + * If nothing changed; bail early. + */ + if (p->pi_top_task == pi_task && prio == p->prio) + return; + + rq = __task_access_lock(p, &lock); + /* + * Set under pi_lock && rq->lock, such that the value can be used under + * either lock. + * + * Note that there is loads of tricky to make this pointer cache work + * right. rt_mutex_slowunlock()+rt_mutex_postunlock() work together to + * ensure a task is de-boosted (pi_task is set to NULL) before the + * task is allowed to run again (and can exit). This ensures the pointer + * points to a blocked task -- which guaratees the task is present. + */ + p->pi_top_task = pi_task; + + /* + * For FIFO/RR we only need to set prio, if that matches we're done. + */ + if (prio == p->prio) + goto out_unlock; + + /* + * Idle task boosting is a nono in general. There is one + * exception, when PREEMPT_RT and NOHZ is active: + * + * The idle task calls get_next_timer_interrupt() and holds + * the timer wheel base->lock on the CPU and another CPU wants + * to access the timer (probably to cancel it). We can safely + * ignore the boosting request, as the idle CPU runs this code + * with interrupts disabled and will complete the lock + * protected section without being interrupted. So there is no + * real need to boost. + */ + if (unlikely(p == rq->idle)) { + WARN_ON(p != rq->curr); + WARN_ON(p->pi_blocked_on); + goto out_unlock; + } + + trace_sched_pi_setprio(p, pi_task); + p->prio = prio; + update_task_priodl(p); + + check_task_changed(rq, p); + +out_unlock: + __task_access_unlock(p, lock); +} +#else +static inline int rt_effective_prio(struct task_struct *p, int prio) +{ + return prio; +} +#endif + +void set_user_nice(struct task_struct *p, long nice) +{ + int new_static; + unsigned long flags; + struct rq *rq; + raw_spinlock_t *lock; + + if (task_nice(p) == nice || nice < MIN_NICE || nice > MAX_NICE) + return; + new_static = NICE_TO_PRIO(nice); + /* + * We have to be careful, if called from sys_setpriority(), + * the task might be in the middle of scheduling on another CPU. + */ + raw_spin_lock_irqsave(&p->pi_lock, flags); + rq = __task_access_lock(p, &lock); + + /* rq lock may not held!! */ + update_rq_clock(rq); + /* + * The RT priorities are set via sched_setscheduler(), but we still + * allow the 'normal' nice value to be set - but as expected + * it wont have any effect on scheduling until the task is + * not SCHED_NORMAL/SCHED_BATCH: + */ + if (has_rt_policy(p)) { + p->static_prio = new_static; + goto out_unlock; + } + + p->deadline -= task_deadline_diff(p); + p->deadline += static_deadline_diff(new_static); + p->static_prio = new_static; + p->prio = effective_prio(p); + update_task_priodl(p); + + check_task_changed(rq, p); +out_unlock: + __task_access_unlock(p, lock); + raw_spin_unlock_irqrestore(&p->pi_lock, flags); +} +EXPORT_SYMBOL(set_user_nice); + +/* + * can_nice - check if a task can reduce its nice value + * @p: task + * @nice: nice value + */ +int can_nice(const struct task_struct *p, const int nice) +{ + /* Convert nice value [19,-20] to rlimit style value [1,40] */ + int nice_rlim = nice_to_rlimit(nice); + + return (nice_rlim <= task_rlimit(p, RLIMIT_NICE) || + capable(CAP_SYS_NICE)); +} + +#ifdef __ARCH_WANT_SYS_NICE + +/* + * sys_nice - change the priority of the current process. + * @increment: priority increment + * + * sys_setpriority is a more generic, but much slower function that + * does similar things. + */ +SYSCALL_DEFINE1(nice, int, increment) +{ + long nice, retval; + + /* + * Setpriority might change our priority at the same moment. + * We don't have to worry. Conceptually one call occurs first + * and we have a single winner. + */ + + increment = clamp(increment, -NICE_WIDTH, NICE_WIDTH); + nice = task_nice(current) + increment; + + nice = clamp_val(nice, MIN_NICE, MAX_NICE); + if (increment < 0 && !can_nice(current, nice)) + return -EPERM; + + retval = security_task_setnice(current, nice); + if (retval) + return retval; + + set_user_nice(current, nice); + return 0; +} + +#endif + +/** + * task_prio - return the priority value of a given task. + * @p: the task in question. + * + * Return: The priority value as seen by users in /proc. + * RT tasks are offset by -100. Normal tasks are centered around 1, value goes + * from 0 (SCHED_ISO) up to 82 (nice +19 SCHED_IDLE). + */ +int task_prio(const struct task_struct *p) +{ + int level, prio = p->prio - MAX_RT_PRIO; + static const int level_to_nice_prio[] = {39, 33, 26, 20, 14, 7, 0, 0}; + + /* rt tasks and iso tasks */ + if (prio <= 0) + goto out; + + preempt_disable(); + level = task_deadline_level(p, this_rq()); + preempt_enable(); + prio += level_to_nice_prio[level]; + if (idleprio_task(p)) + prio += NICE_WIDTH; +out: + return prio; +} + +/** + * idle_cpu - is a given CPU idle currently? + * @cpu: the processor in question. + * + * Return: 1 if the CPU is currently idle. 0 otherwise. + */ +int idle_cpu(int cpu) +{ + return cpu_curr(cpu) == cpu_rq(cpu)->idle; +} + +/** + * idle_task - return the idle task for a given CPU. + * @cpu: the processor in question. + * + * Return: The idle task for the cpu @cpu. + */ +struct task_struct *idle_task(int cpu) +{ + return cpu_rq(cpu)->idle; +} + +/** + * find_process_by_pid - find a process with a matching PID value. + * @pid: the pid in question. + * + * The task of @pid, if found. %NULL otherwise. + */ +static inline struct task_struct *find_process_by_pid(pid_t pid) +{ + return pid ? find_task_by_vpid(pid) : current; +} + +#ifdef CONFIG_SMP +void sched_set_stop_task(int cpu, struct task_struct *stop) +{ + struct sched_param stop_param = { .sched_priority = STOP_PRIO }; + struct sched_param start_param = { .sched_priority = 0 }; + struct task_struct *old_stop = cpu_rq(cpu)->stop; + + if (stop) { + /* + * Make it appear like a SCHED_FIFO task, its something + * userspace knows about and won't get confused about. + * + * Also, it will make PI more or less work without too + * much confusion -- but then, stop work should not + * rely on PI working anyway. + */ + sched_setscheduler_nocheck(stop, SCHED_FIFO, &stop_param); + } + + cpu_rq(cpu)->stop = stop; + + if (old_stop) { + /* + * Reset it back to a normal scheduling policy so that + * it can die in pieces. + */ + sched_setscheduler_nocheck(old_stop, SCHED_NORMAL, &start_param); + } +} + +/* + * Change a given task's CPU affinity. Migrate the thread to a + * proper CPU and schedule it away if the CPU it's executing on + * is removed from the allowed bitmask. + * + * NOTE: the caller must have a valid reference to the task, the + * task must not exit() & deallocate itself prematurely. The + * call is not atomic; no spinlocks may be held. + */ +static int __set_cpus_allowed_ptr(struct task_struct *p, + const struct cpumask *new_mask, bool check) +{ + const struct cpumask *cpu_valid_mask = cpu_active_mask; + int dest_cpu; + bool queued = false; + unsigned long flags; + struct rq *rq; + raw_spinlock_t *lock; + int ret = 0; + + raw_spin_lock_irqsave(&p->pi_lock, flags); + rq = __task_access_lock(p, &lock); + + if (p->flags & PF_KTHREAD) { + /* + * Kernel threads are allowed on online && !active CPUs + */ + cpu_valid_mask = cpu_online_mask; + } + + /* + * Must re-check here, to close a race against __kthread_bind(), + * sched_setaffinity() is not guaranteed to observe the flag. + */ + if (check && (p->flags & PF_NO_SETAFFINITY)) { + ret = -EINVAL; + goto out; + } + + if (cpumask_equal(&p->cpus_allowed, new_mask)) + goto out; + + if (!cpumask_intersects(new_mask, cpu_valid_mask)) { + ret = -EINVAL; + goto out; + } + + queued = task_queued(p); + + do_set_cpus_allowed(p, new_mask); + + if (p->flags & PF_KTHREAD) { + /* + * For kernel threads that do indeed end up on online && + * !active we want to ensure they are strict per-CPU threads. + */ + WARN_ON(cpumask_intersects(new_mask, cpu_online_mask) && + !cpumask_intersects(new_mask, cpu_active_mask) && + p->nr_cpus_allowed != 1); + } + + /* Can the task run on the task's current CPU? If so, we're done */ + if (cpumask_test_cpu(task_cpu(p), new_mask)) + goto out; + + dest_cpu = cpumask_any_and(cpu_valid_mask, new_mask); + if (task_running(p) || p->state == TASK_WAKING) { + struct migration_arg arg = { p, dest_cpu }; + + /* Need help from migration thread: drop lock and wait. */ + __task_access_unlock(p, lock); + raw_spin_unlock_irqrestore(&p->pi_lock, flags); + stop_one_cpu(cpu_of(rq), migration_cpu_stop, &arg); + tlb_migrate_finish(p->mm); + return 0; + } + if (task_queued(p)) { + /* + * OK, since we're going to drop the lock immediately + * afterwards anyway. + */ + update_rq_clock(rq); + rq = move_queued_task(rq, p, dest_cpu); + lock = &rq->lock; + } + +out: + __task_access_unlock(p, lock); + raw_spin_unlock_irqrestore(&p->pi_lock, flags); + + return ret; +} + +int set_cpus_allowed_ptr(struct task_struct *p, const struct cpumask *new_mask) +{ + return __set_cpus_allowed_ptr(p, new_mask, false); +} +EXPORT_SYMBOL_GPL(set_cpus_allowed_ptr); + +#else +static inline int +__set_cpus_allowed_ptr(struct task_struct *p, + const struct cpumask *new_mask, bool check) +{ + return set_cpus_allowed_ptr(p, new_mask); +} +#endif + +static u64 task_init_deadline(const struct task_struct *p) +{ + return task_rq(p)->clock + task_deadline_diff(p); +} + +u64 (* task_init_deadline_func_tbl[])(const struct task_struct *p) = { + task_init_deadline, /* SCHED_NORMAL */ + NULL, /* SCHED_FIFO */ + NULL, /* SCHED_RR */ + task_init_deadline, /* SCHED_BATCH */ + NULL, /* SCHED_ISO */ + task_init_deadline /* SCHED_IDLE */ +}; + +/* + * sched_setparam() passes in -1 for its policy, to let the functions + * it calls know not to change it. + */ +#define SETPARAM_POLICY -1 + +static void __setscheduler_params(struct task_struct *p, + const struct sched_attr *attr) +{ + int old_policy = p->policy; + int policy = attr->sched_policy; + + if (policy == SETPARAM_POLICY) + policy = p->policy; + + p->policy = policy; + + /* + * allow normal nice value to be set, but will not have any + * effect on scheduling until the task not SCHED_NORMAL/ + * SCHED_BATCH + */ + p->static_prio = NICE_TO_PRIO(attr->sched_nice); + + /* + * __sched_setscheduler() ensures attr->sched_priority == 0 when + * !rt_policy. Always setting this ensures that things like + * getparam()/getattr() don't report silly values for !rt tasks. + */ + p->rt_priority = attr->sched_priority; + p->normal_prio = normal_prio(p); + + if (old_policy != policy) + p->deadline = (task_init_deadline_func_tbl[p->policy])? + task_init_deadline_func_tbl[p->policy](p):0ULL; +} + +/* Actually do priority change: must hold rq lock. */ +static void __setscheduler(struct rq *rq, struct task_struct *p, + const struct sched_attr *attr, bool keep_boost) +{ + __setscheduler_params(p, attr); + + /* + * Keep a potential priority boosting if called from + * sched_setscheduler(). + */ + if (keep_boost) + p->prio = rt_effective_prio(p, p->prio); + update_task_priodl(p); +} + +/* + * check the target process has a UID that matches the current process's + */ +static bool check_same_owner(struct task_struct *p) +{ + const struct cred *cred = current_cred(), *pcred; + bool match; + + rcu_read_lock(); + pcred = __task_cred(p); + match = (uid_eq(cred->euid, pcred->euid) || + uid_eq(cred->euid, pcred->uid)); + rcu_read_unlock(); + return match; +} + +static int +__sched_setscheduler(struct task_struct *p, + const struct sched_attr *attr, bool user, bool pi) +{ + int newprio = MAX_RT_PRIO - 1 - attr->sched_priority; + int retval, oldpolicy = -1; + int policy = attr->sched_policy; + unsigned long flags; + struct rq *rq; + int reset_on_fork; + raw_spinlock_t *lock; + + /* The pi code expects interrupts enabled */ + BUG_ON(pi && in_interrupt()); +recheck: + /* Double check policy once rq lock held */ + if (policy < 0) { + reset_on_fork = p->sched_reset_on_fork; + policy = oldpolicy = p->policy; + } else { + reset_on_fork = !!(attr->sched_flags & SCHED_RESET_ON_FORK); + + if (policy > SCHED_IDLE) + return -EINVAL; + } + + if (attr->sched_flags & ~(SCHED_FLAG_RESET_ON_FORK)) + return -EINVAL; + + /* + * Valid priorities for SCHED_FIFO and SCHED_RR are + * 1..MAX_USER_RT_PRIO-1, valid priority for SCHED_NORMAL and + * SCHED_BATCH and SCHED_IDLE is 0. + */ + if (attr->sched_priority < 0 || + (p->mm && attr->sched_priority > MAX_USER_RT_PRIO - 1) || + (!p->mm && attr->sched_priority > MAX_RT_PRIO - 1)) + return -EINVAL; + if (is_rt_policy(policy) != (attr->sched_priority != 0)) + return -EINVAL; + + /* + * Allow unprivileged RT tasks to decrease priority: + */ + if (user && !capable(CAP_SYS_NICE)) { + if (is_rt_policy(policy)) { + unsigned long rlim_rtprio = + task_rlimit(p, RLIMIT_RTPRIO); + + /* Can't set/change the rt policy */ + if (policy != p->policy && !rlim_rtprio) + return -EPERM; + + /* Can't increase priority */ + if (attr->sched_priority > p->rt_priority && + attr->sched_priority > rlim_rtprio) + return -EPERM; + } else { + switch (p->policy) { + /* + * Can only downgrade policies but not back to + * SCHED_NORMAL + */ + case SCHED_ISO: + if (policy == SCHED_ISO) + return 0; + if (policy == SCHED_NORMAL) + return -EPERM; + break; + case SCHED_BATCH: + if (policy == SCHED_BATCH) + return 0; + if (policy != SCHED_IDLE) + return -EPERM; + break; + case SCHED_IDLE: + if (policy == SCHED_IDLE) + return 0; + return -EPERM; + default: + break; + } + } + + /* Can't change other user's priorities */ + if (!check_same_owner(p)) + return -EPERM; + + /* Normal users shall not reset the sched_reset_on_fork flag */ + if (p->sched_reset_on_fork && !reset_on_fork) + return -EPERM; + } + + if (user) { + retval = security_task_setscheduler(p); + if (retval) + return retval; + } + + /* + * make sure no PI-waiters arrive (or leave) while we are + * changing the priority of the task: + */ + raw_spin_lock_irqsave(&p->pi_lock, flags); + + /* + * To be able to change p->policy safely, task_access_lock() + * must be called. + * IF use task_access_lock() here: + * For the task p which is not running, reading rq->stop is + * racy but acceptable as ->stop doesn't change much. + * An enhancemnet can be made to read rq->stop saftly. + */ + rq = __task_access_lock(p, &lock); + + /* + * Changing the policy of the stop threads its a very bad idea + */ + if (p == rq->stop) { + __task_access_unlock(p, lock); + raw_spin_unlock_irqrestore(&p->pi_lock, flags); + return -EINVAL; + } + + /* + * If not changing anything there's no need to proceed further: + */ + if (unlikely(policy == p->policy && (!is_rt_policy(policy) || + attr->sched_priority == p->rt_priority))) { + p->sched_reset_on_fork = reset_on_fork; + __task_access_unlock(p, lock); + raw_spin_unlock_irqrestore(&p->pi_lock, flags); + return 0; + } + + /* Re-check policy now with rq lock held */ + if (unlikely(oldpolicy != -1 && oldpolicy != p->policy)) { + policy = oldpolicy = -1; + __task_access_unlock(p, lock); + raw_spin_unlock_irqrestore(&p->pi_lock, flags); + goto recheck; + } + + p->sched_reset_on_fork = reset_on_fork; + + if (pi) { + /* + * Take priority boosted tasks into account. If the new + * effective priority is unchanged, we just store the new + * normal parameters and do not touch the scheduler class and + * the runqueue. This will be done when the task deboost + * itself. + */ + if (rt_effective_prio(p, newprio) == p->prio) { + __setscheduler_params(p, attr); + __task_access_unlock(p, lock); + raw_spin_unlock_irqrestore(&p->pi_lock, flags); + return 0; + } + } + + __setscheduler(rq, p, attr, pi); + + check_task_changed(rq, p); + + /* Avoid rq from going away on us: */ + preempt_disable(); + __task_access_unlock(p, lock); + raw_spin_unlock_irqrestore(&p->pi_lock, flags); + + if (pi) + rt_mutex_adjust_pi(p); + + preempt_enable(); + + return 0; +} + +static int _sched_setscheduler(struct task_struct *p, int policy, + const struct sched_param *param, bool check) +{ + struct sched_attr attr = { + .sched_policy = policy, + .sched_priority = param->sched_priority, + .sched_nice = PRIO_TO_NICE(p->static_prio), + }; + unsigned long rlim_rtprio = 0; + + /* Fixup the legacy SCHED_RESET_ON_FORK hack. */ + if ((policy != SETPARAM_POLICY) && (policy & SCHED_RESET_ON_FORK)) { + attr.sched_flags |= SCHED_FLAG_RESET_ON_FORK; + policy &= ~SCHED_RESET_ON_FORK; + attr.sched_policy = policy; + } + + if (is_rt_policy(policy) && !capable(CAP_SYS_NICE)) { + unsigned long lflags; + + if (!lock_task_sighand(p, &lflags)) + return -ESRCH; + rlim_rtprio = task_rlimit(p, RLIMIT_RTPRIO); + unlock_task_sighand(p, &lflags); + if (!rlim_rtprio) { + /* + * If the caller requested an RT policy without having the + * necessary rights, we downgrade the policy to SCHED_ISO. + * We also set the attr to zero to pass the checks. + */ + attr.sched_policy = SCHED_ISO; + attr.sched_priority = 0; + attr.sched_nice = 0; + } + } + + return __sched_setscheduler(p, &attr, check, true); +} + +/** + * sched_setscheduler - change the scheduling policy and/or RT priority of a thread. + * @p: the task in question. + * @policy: new policy. + * @param: structure containing the new RT priority. + * + * Return: 0 on success. An error code otherwise. + * + * NOTE that the task may be already dead. + */ +int sched_setscheduler(struct task_struct *p, int policy, + const struct sched_param *param) +{ + return _sched_setscheduler(p, policy, param, true); +} + +EXPORT_SYMBOL_GPL(sched_setscheduler); + +int sched_setattr(struct task_struct *p, const struct sched_attr *attr) +{ + return __sched_setscheduler(p, attr, true, true); +} +EXPORT_SYMBOL_GPL(sched_setattr); + +/** + * sched_setscheduler_nocheck - change the scheduling policy and/or RT priority of a thread from kernelspace. + * @p: the task in question. + * @policy: new policy. + * @param: structure containing the new RT priority. + * + * Just like sched_setscheduler, only don't bother checking if the + * current context has permission. For example, this is needed in + * stop_machine(): we create temporary high priority worker threads, + * but our caller might not have that capability. + * + * Return: 0 on success. An error code otherwise. + */ +int sched_setscheduler_nocheck(struct task_struct *p, int policy, + const struct sched_param *param) +{ + return _sched_setscheduler(p, policy, param, false); +} +EXPORT_SYMBOL_GPL(sched_setscheduler_nocheck); + +static int +do_sched_setscheduler(pid_t pid, int policy, struct sched_param __user *param) +{ + struct sched_param lparam; + struct task_struct *p; + int retval; + + if (!param || pid < 0) + return -EINVAL; + if (copy_from_user(&lparam, param, sizeof(struct sched_param))) + return -EFAULT; + + rcu_read_lock(); + retval = -ESRCH; + p = find_process_by_pid(pid); + if (p != NULL) + retval = sched_setscheduler(p, policy, &lparam); + rcu_read_unlock(); + + return retval; +} + +/* + * Mimics kernel/events/core.c perf_copy_attr(). + */ +static int sched_copy_attr(struct sched_attr __user *uattr, struct sched_attr *attr) +{ + u32 size; + int ret; + + if (!access_ok(VERIFY_WRITE, uattr, SCHED_ATTR_SIZE_VER0)) + return -EFAULT; + + /* Zero the full structure, so that a short copy will be nice: */ + memset(attr, 0, sizeof(*attr)); + + ret = get_user(size, &uattr->size); + if (ret) + return ret; + + /* Bail out on silly large: */ + if (size > PAGE_SIZE) + goto err_size; + + /* ABI compatibility quirk: */ + if (!size) + size = SCHED_ATTR_SIZE_VER0; + + if (size < SCHED_ATTR_SIZE_VER0) + goto err_size; + + /* + * If we're handed a bigger struct than we know of, + * ensure all the unknown bits are 0 - i.e. new + * user-space does not rely on any kernel feature + * extensions we dont know about yet. + */ + if (size > sizeof(*attr)) { + unsigned char __user *addr; + unsigned char __user *end; + unsigned char val; + + addr = (void __user *)uattr + sizeof(*attr); + end = (void __user *)uattr + size; + + for (; addr < end; addr++) { + ret = get_user(val, addr); + if (ret) + return ret; + if (val) + goto err_size; + } + size = sizeof(*attr); + } + + ret = copy_from_user(attr, uattr, size); + if (ret) + return -EFAULT; + + /* + * XXX: Do we want to be lenient like existing syscalls; or do we want + * to be strict and return an error on out-of-bounds values? + */ + attr->sched_nice = clamp(attr->sched_nice, -20, 19); + + /* sched/core.c uses zero here but we already know ret is zero */ + return 0; + +err_size: + put_user(sizeof(*attr), &uattr->size); + return -E2BIG; +} + +/** + * sys_sched_setscheduler - set/change the scheduler policy and RT priority + * @pid: the pid in question. + * @policy: new policy. + * + * Return: 0 on success. An error code otherwise. + * @param: structure containing the new RT priority. + */ +SYSCALL_DEFINE3(sched_setscheduler, pid_t, pid, int, policy, struct sched_param __user *, param) +{ + if (policy < 0) + return -EINVAL; + + return do_sched_setscheduler(pid, policy, param); +} + +/** + * sys_sched_setparam - set/change the RT priority of a thread + * @pid: the pid in question. + * @param: structure containing the new RT priority. + * + * Return: 0 on success. An error code otherwise. + */ +SYSCALL_DEFINE2(sched_setparam, pid_t, pid, struct sched_param __user *, param) +{ + return do_sched_setscheduler(pid, SETPARAM_POLICY, param); +} + +/** + * sys_sched_setattr - same as above, but with extended sched_attr + * @pid: the pid in question. + * @uattr: structure containing the extended parameters. + */ +SYSCALL_DEFINE3(sched_setattr, pid_t, pid, struct sched_attr __user *, uattr, + unsigned int, flags) +{ + struct sched_attr attr; + struct task_struct *p; + int retval; + + if (!uattr || pid < 0 || flags) + return -EINVAL; + + retval = sched_copy_attr(uattr, &attr); + if (retval) + return retval; + + if ((int)attr.sched_policy < 0) + return -EINVAL; + + rcu_read_lock(); + retval = -ESRCH; + p = find_process_by_pid(pid); + if (p != NULL) + retval = sched_setattr(p, &attr); + rcu_read_unlock(); + + return retval; +} + +/** + * sys_sched_getscheduler - get the policy (scheduling class) of a thread + * @pid: the pid in question. + * + * Return: On success, the policy of the thread. Otherwise, a negative error + * code. + */ +SYSCALL_DEFINE1(sched_getscheduler, pid_t, pid) +{ + struct task_struct *p; + int retval = -EINVAL; + + if (pid < 0) + goto out_nounlock; + + retval = -ESRCH; + rcu_read_lock(); + p = find_process_by_pid(pid); + if (p) { + retval = security_task_getscheduler(p); + if (!retval) + retval = p->policy; + } + rcu_read_unlock(); + +out_nounlock: + return retval; +} + +/** + * sys_sched_getscheduler - get the RT priority of a thread + * @pid: the pid in question. + * @param: structure containing the RT priority. + * + * Return: On success, 0 and the RT priority is in @param. Otherwise, an error + * code. + */ +SYSCALL_DEFINE2(sched_getparam, pid_t, pid, struct sched_param __user *, param) +{ + struct sched_param lp = { .sched_priority = 0 }; + struct task_struct *p; + int retval = -EINVAL; + + if (!param || pid < 0) + goto out_nounlock; + + rcu_read_lock(); + p = find_process_by_pid(pid); + retval = -ESRCH; + if (!p) + goto out_unlock; + + retval = security_task_getscheduler(p); + if (retval) + goto out_unlock; + + if (has_rt_policy(p)) + lp.sched_priority = p->rt_priority; + rcu_read_unlock(); + + /* + * This one might sleep, we cannot do it with a spinlock held ... + */ + retval = copy_to_user(param, &lp, sizeof(*param)) ? -EFAULT : 0; + +out_nounlock: + return retval; + +out_unlock: + rcu_read_unlock(); + return retval; +} + +static int sched_read_attr(struct sched_attr __user *uattr, + struct sched_attr *attr, + unsigned int usize) +{ + int ret; + + if (!access_ok(VERIFY_WRITE, uattr, usize)) + return -EFAULT; + + /* + * If we're handed a smaller struct than we know of, + * ensure all the unknown bits are 0 - i.e. old + * user-space does not get uncomplete information. + */ + if (usize < sizeof(*attr)) { + unsigned char *addr; + unsigned char *end; + + addr = (void *)attr + usize; + end = (void *)attr + sizeof(*attr); + + for (; addr < end; addr++) { + if (*addr) + return -EFBIG; + } + + attr->size = usize; + } + + ret = copy_to_user(uattr, attr, attr->size); + if (ret) + return -EFAULT; + + /* sched/core.c uses zero here but we already know ret is zero */ + return ret; +} + +/** + * sys_sched_getattr - similar to sched_getparam, but with sched_attr + * @pid: the pid in question. + * @uattr: structure containing the extended parameters. + * @size: sizeof(attr) for fwd/bwd comp. + * @flags: for future extension. + */ +SYSCALL_DEFINE4(sched_getattr, pid_t, pid, struct sched_attr __user *, uattr, + unsigned int, size, unsigned int, flags) +{ + struct sched_attr attr = { + .size = sizeof(struct sched_attr), + }; + struct task_struct *p; + int retval; + + if (!uattr || pid < 0 || size > PAGE_SIZE || + size < SCHED_ATTR_SIZE_VER0 || flags) + return -EINVAL; + + rcu_read_lock(); + p = find_process_by_pid(pid); + retval = -ESRCH; + if (!p) + goto out_unlock; + + retval = security_task_getscheduler(p); + if (retval) + goto out_unlock; + + attr.sched_policy = p->policy; + if (rt_task(p)) + attr.sched_priority = p->rt_priority; + else + attr.sched_nice = task_nice(p); + + rcu_read_unlock(); + + retval = sched_read_attr(uattr, &attr, size); + return retval; + +out_unlock: + rcu_read_unlock(); + return retval; +} + +long sched_setaffinity(pid_t pid, const struct cpumask *in_mask) +{ + cpumask_var_t cpus_allowed, new_mask; + struct task_struct *p; + int retval; + + get_online_cpus(); + rcu_read_lock(); + + p = find_process_by_pid(pid); + if (!p) { + rcu_read_unlock(); + put_online_cpus(); + return -ESRCH; + } + + /* Prevent p going away */ + get_task_struct(p); + rcu_read_unlock(); + + if (p->flags & PF_NO_SETAFFINITY) { + retval = -EINVAL; + goto out_put_task; + } + if (!alloc_cpumask_var(&cpus_allowed, GFP_KERNEL)) { + retval = -ENOMEM; + goto out_put_task; + } + if (!alloc_cpumask_var(&new_mask, GFP_KERNEL)) { + retval = -ENOMEM; + goto out_free_cpus_allowed; + } + retval = -EPERM; + if (!check_same_owner(p)) { + rcu_read_lock(); + if (!ns_capable(__task_cred(p)->user_ns, CAP_SYS_NICE)) { + rcu_read_unlock(); + goto out_unlock; + } + rcu_read_unlock(); + } + + retval = security_task_setscheduler(p); + if (retval) + goto out_unlock; + + cpuset_cpus_allowed(p, cpus_allowed); + cpumask_and(new_mask, in_mask, cpus_allowed); +again: + retval = __set_cpus_allowed_ptr(p, new_mask, true); + + if (!retval) { + cpuset_cpus_allowed(p, cpus_allowed); + if (!cpumask_subset(new_mask, cpus_allowed)) { + /* + * We must have raced with a concurrent cpuset + * update. Just reset the cpus_allowed to the + * cpuset's cpus_allowed + */ + cpumask_copy(new_mask, cpus_allowed); + goto again; + } + } +out_unlock: + free_cpumask_var(new_mask); +out_free_cpus_allowed: + free_cpumask_var(cpus_allowed); +out_put_task: + put_task_struct(p); + put_online_cpus(); + return retval; +} + +static int get_user_cpu_mask(unsigned long __user *user_mask_ptr, unsigned len, + struct cpumask *new_mask) +{ + if (len < cpumask_size()) + cpumask_clear(new_mask); + else if (len > cpumask_size()) + len = cpumask_size(); + + return copy_from_user(new_mask, user_mask_ptr, len) ? -EFAULT : 0; +} + +/** + * sys_sched_setaffinity - set the CPU affinity of a process + * @pid: pid of the process + * @len: length in bytes of the bitmask pointed to by user_mask_ptr + * @user_mask_ptr: user-space pointer to the new CPU mask + * + * Return: 0 on success. An error code otherwise. + */ +SYSCALL_DEFINE3(sched_setaffinity, pid_t, pid, unsigned int, len, + unsigned long __user *, user_mask_ptr) +{ + cpumask_var_t new_mask; + int retval; + + if (!alloc_cpumask_var(&new_mask, GFP_KERNEL)) + return -ENOMEM; + + retval = get_user_cpu_mask(user_mask_ptr, len, new_mask); + if (retval == 0) + retval = sched_setaffinity(pid, new_mask); + free_cpumask_var(new_mask); + return retval; +} + +long sched_getaffinity(pid_t pid, cpumask_t *mask) +{ + struct task_struct *p; + raw_spinlock_t *lock; + unsigned long flags; + int retval; + + rcu_read_lock(); + + retval = -ESRCH; + p = find_process_by_pid(pid); + if (!p) + goto out_unlock; + + retval = security_task_getscheduler(p); + if (retval) + goto out_unlock; + + task_access_lock_irqsave(p, &lock, &flags); + cpumask_and(mask, &p->cpus_allowed, cpu_active_mask); + task_access_unlock_irqrestore(p, lock, &flags); + +out_unlock: + rcu_read_unlock(); + + return retval; +} + +/** + * sys_sched_getaffinity - get the CPU affinity of a process + * @pid: pid of the process + * @len: length in bytes of the bitmask pointed to by user_mask_ptr + * @user_mask_ptr: user-space pointer to hold the current CPU mask + * + * Return: size of CPU mask copied to user_mask_ptr on success. An + * error code otherwise. + */ +SYSCALL_DEFINE3(sched_getaffinity, pid_t, pid, unsigned int, len, + unsigned long __user *, user_mask_ptr) +{ + int ret; + cpumask_var_t mask; + + if ((len * BITS_PER_BYTE) < nr_cpu_ids) + return -EINVAL; + if (len & (sizeof(unsigned long)-1)) + return -EINVAL; + + if (!alloc_cpumask_var(&mask, GFP_KERNEL)) + return -ENOMEM; + + ret = sched_getaffinity(pid, mask); + if (ret == 0) { + unsigned int retlen = min_t(size_t, len, cpumask_size()); + + if (copy_to_user(user_mask_ptr, mask, retlen)) + ret = -EFAULT; + else + ret = retlen; + } + free_cpumask_var(mask); + + return ret; +} + +/** + * sys_sched_yield - yield the current processor to other threads. + * + * This function yields the current CPU to other tasks. It does this by + * scheduling away the current task. If it still has the earliest deadline + * it will be scheduled again as the next task. + * + * Return: 0. + */ +static void do_sched_yield(void) +{ + struct rq *rq; + + if (!sched_yield_type) + return; + + local_irq_disable(); + rq = this_rq(); + raw_spin_lock(&rq->lock); + + if (sched_yield_type > 1) { + time_slice_expired(current, rq); + requeue_task(current, rq); + } + schedstat_inc(rq->yld_count); + + /* + * Since we are going to call schedule() anyway, there's + * no need to preempt or enable interrupts: + */ + preempt_disable(); + raw_spin_unlock(&rq->lock); + sched_preempt_enable_no_resched(); + + schedule(); +} + +SYSCALL_DEFINE0(sched_yield) +{ + do_sched_yield(); + return 0; +} + +#ifndef CONFIG_PREEMPT +int __sched _cond_resched(void) +{ + if (should_resched(0)) { + preempt_schedule_common(); + return 1; + } + rcu_all_qs(); + return 0; +} +EXPORT_SYMBOL(_cond_resched); +#endif + +/* + * __cond_resched_lock() - if a reschedule is pending, drop the given lock, + * call schedule, and on return reacquire the lock. + * + * This works OK both with and without CONFIG_PREEMPT. We do strange low-level + * operations here to prevent schedule() from being called twice (once via + * spin_unlock(), once by hand). + */ +int __cond_resched_lock(spinlock_t *lock) +{ + int resched = should_resched(PREEMPT_LOCK_OFFSET); + int ret = 0; + + lockdep_assert_held(lock); + + if (spin_needbreak(lock) || resched) { + spin_unlock(lock); + if (resched) + preempt_schedule_common(); + else + cpu_relax(); + ret = 1; + spin_lock(lock); + } + return ret; +} +EXPORT_SYMBOL(__cond_resched_lock); + +/** + * yield - yield the current processor to other threads. + * + * Do not ever use this function, there's a 99% chance you're doing it wrong. + * + * The scheduler is at all times free to pick the calling task as the most + * eligible task to run, if removing the yield() call from your code breaks + * it, its already broken. + * + * Typical broken usage is: + * + * while (!event) + * yield(); + * + * where one assumes that yield() will let 'the other' process run that will + * make event true. If the current task is a SCHED_FIFO task that will never + * happen. Never use yield() as a progress guarantee!! + * + * If you want to use yield() to wait for something, use wait_event(). + * If you want to use yield() to be 'nice' for others, use cond_resched(). + * If you still want to use yield(), do not! + */ +void __sched yield(void) +{ + set_current_state(TASK_RUNNING); + do_sched_yield(); +} +EXPORT_SYMBOL(yield); + +/** + * yield_to - yield the current processor to another thread in + * your thread group, or accelerate that thread toward the + * processor it's on. + * @p: target task + * @preempt: whether task preemption is allowed or not + * + * It's the caller's job to ensure that the target task struct + * can't go away on us before we can do any checks. + * + * In PDS, yield_to is not supported. + * + * Return: + * true (>0) if we indeed boosted the target task. + * false (0) if we failed to boost the target. + * -ESRCH if there's no task to yield to. + */ +int __sched yield_to(struct task_struct *p, bool preempt) +{ + return 0; +} +EXPORT_SYMBOL_GPL(yield_to); + +int io_schedule_prepare(void) +{ + int old_iowait = current->in_iowait; + + current->in_iowait = 1; + blk_schedule_flush_plug(current); + + return old_iowait; +} + +void io_schedule_finish(int token) +{ + current->in_iowait = token; +} + +/* + * This task is about to go to sleep on IO. Increment rq->nr_iowait so + * that process accounting knows that this is a task in IO wait state. + * + * But don't do that if it is a deliberate, throttling IO wait (this task + * has set its backing_dev_info: the queue against which it should throttle) + */ + +long __sched io_schedule_timeout(long timeout) +{ + int token; + long ret; + + token = io_schedule_prepare(); + ret = schedule_timeout(timeout); + io_schedule_finish(token); + + return ret; +} +EXPORT_SYMBOL(io_schedule_timeout); + +void io_schedule(void) +{ + int token; + + token = io_schedule_prepare(); + schedule(); + io_schedule_finish(token); +} +EXPORT_SYMBOL(io_schedule); + +/** + * sys_sched_get_priority_max - return maximum RT priority. + * @policy: scheduling class. + * + * Return: On success, this syscall returns the maximum + * rt_priority that can be used by a given scheduling class. + * On failure, a negative error code is returned. + */ +SYSCALL_DEFINE1(sched_get_priority_max, int, policy) +{ + int ret = -EINVAL; + + switch (policy) { + case SCHED_FIFO: + case SCHED_RR: + ret = MAX_USER_RT_PRIO-1; + break; + case SCHED_NORMAL: + case SCHED_BATCH: + case SCHED_ISO: + case SCHED_IDLE: + ret = 0; + break; + } + return ret; +} + +/** + * sys_sched_get_priority_min - return minimum RT priority. + * @policy: scheduling class. + * + * Return: On success, this syscall returns the minimum + * rt_priority that can be used by a given scheduling class. + * On failure, a negative error code is returned. + */ +SYSCALL_DEFINE1(sched_get_priority_min, int, policy) +{ + int ret = -EINVAL; + + switch (policy) { + case SCHED_FIFO: + case SCHED_RR: + ret = 1; + break; + case SCHED_NORMAL: + case SCHED_BATCH: + case SCHED_ISO: + case SCHED_IDLE: + ret = 0; + break; + } + return ret; +} + +static int sched_rr_get_interval(pid_t pid, struct timespec64 *t) +{ + struct task_struct *p; + unsigned int time_slice; + unsigned long flags; + int retval; + raw_spinlock_t *lock; + + if (pid < 0) + return -EINVAL; + + retval = -ESRCH; + rcu_read_lock(); + p = find_process_by_pid(pid); + if (!p) + goto out_unlock; + + retval = security_task_getscheduler(p); + if (retval) + goto out_unlock; + + task_access_lock_irqsave(p, &lock, &flags); + time_slice = p->policy == SCHED_FIFO ? 0 : MS_TO_NS(rr_interval); + task_access_unlock_irqrestore(p, lock, &flags); + + rcu_read_unlock(); + *t = ns_to_timespec64(time_slice); + return 0; + +out_unlock: + rcu_read_unlock(); + return retval; +} + +/** + * sys_sched_rr_get_interval - return the default timeslice of a process. + * @pid: pid of the process. + * @interval: userspace pointer to the timeslice value. + * + * + * Return: On success, 0 and the timeslice is in @interval. Otherwise, + * an error code. + */ +SYSCALL_DEFINE2(sched_rr_get_interval, pid_t, pid, + struct timespec __user *, interval) +{ + struct timespec64 t; + int retval = sched_rr_get_interval(pid, &t); + + if (retval == 0) + retval = put_timespec64(&t, interval); + + return retval; +} + +#ifdef CONFIG_COMPAT +COMPAT_SYSCALL_DEFINE2(sched_rr_get_interval, + compat_pid_t, pid, + struct compat_timespec __user *, interval) +{ + struct timespec64 t; + int retval = sched_rr_get_interval(pid, &t); + + if (retval == 0) + retval = compat_put_timespec64(&t, interval); + return retval; +} +#endif + +void sched_show_task(struct task_struct *p) +{ + unsigned long free = 0; + int ppid; + + if (!try_get_task_stack(p)) + return; + + printk(KERN_INFO "%-15.15s %c", p->comm, task_state_to_char(p)); + + if (p->state == TASK_RUNNING) + printk(KERN_CONT " running task "); +#ifdef CONFIG_DEBUG_STACK_USAGE + free = stack_not_used(p); +#endif + ppid = 0; + rcu_read_lock(); + if (pid_alive(p)) + ppid = task_pid_nr(rcu_dereference(p->real_parent)); + rcu_read_unlock(); + printk(KERN_CONT "%5lu %5d %6d 0x%08lx\n", free, + task_pid_nr(p), ppid, + (unsigned long)task_thread_info(p)->flags); + + print_worker_info(KERN_INFO, p); + show_stack(p, NULL); + put_task_stack(p); +} +EXPORT_SYMBOL_GPL(sched_show_task); + +static inline bool +state_filter_match(unsigned long state_filter, struct task_struct *p) +{ + /* no filter, everything matches */ + if (!state_filter) + return true; + + /* filter, but doesn't match */ + if (!(p->state & state_filter)) + return false; + + /* + * When looking for TASK_UNINTERRUPTIBLE skip TASK_IDLE (allows + * TASK_KILLABLE). + */ + if (state_filter == TASK_UNINTERRUPTIBLE && p->state == TASK_IDLE) + return false; + + return true; +} + + +void show_state_filter(unsigned long state_filter) +{ + struct task_struct *g, *p; + +#if BITS_PER_LONG == 32 + printk(KERN_INFO + " task PC stack pid father\n"); +#else + printk(KERN_INFO + " task PC stack pid father\n"); +#endif + rcu_read_lock(); + for_each_process_thread(g, p) { + /* + * reset the NMI-timeout, listing all files on a slow + * console might take a lot of time: + * Also, reset softlockup watchdogs on all CPUs, because + * another CPU might be blocked waiting for us to process + * an IPI. + */ + touch_nmi_watchdog(); + touch_all_softlockup_watchdogs(); + if (state_filter_match(state_filter, p)) + sched_show_task(p); + } + +#ifdef CONFIG_SCHED_DEBUG + /* PDS TODO: should support this + if (!state_filter) + sysrq_sched_debug_show(); + */ +#endif + rcu_read_unlock(); + /* + * Only show locks if all tasks are dumped: + */ + if (!state_filter) + debug_show_all_locks(); +} + +void dump_cpu_task(int cpu) +{ + pr_info("Task dump for CPU %d:\n", cpu); + sched_show_task(cpu_curr(cpu)); +} + +/** + * init_idle - set up an idle thread for a given CPU + * @idle: task in question + * @cpu: cpu the idle task belongs to + * + * NOTE: this function does not set the idle thread's NEED_RESCHED + * flag, to make booting more robust. + */ +void init_idle(struct task_struct *idle, int cpu) +{ + struct rq *rq = cpu_rq(cpu); + unsigned long flags; + + raw_spin_lock_irqsave(&idle->pi_lock, flags); + raw_spin_lock(&rq->lock); + update_rq_clock(rq); + + idle->last_ran = rq->clock_task; + idle->state = TASK_RUNNING; + idle->flags |= PF_IDLE; + /* Setting prio to illegal value shouldn't matter when never queued */ + idle->prio = PRIO_LIMIT; + idle->deadline = rq_clock(rq) + task_deadline_diff(idle); + update_task_priodl(idle); + + kasan_unpoison_task_stack(idle); + +#ifdef CONFIG_SMP + /* + * It's possible that init_idle() gets called multiple times on a task, + * in that case do_set_cpus_allowed() will not do the right thing. + * + * And since this is boot we can forgo the serialisation. + */ + set_cpus_allowed_common(idle, cpumask_of(cpu)); +#endif + + /* Silence PROVE_RCU */ + rcu_read_lock(); + __set_task_cpu(idle, cpu); + rcu_read_unlock(); + + rq->curr = rq->idle = idle; + idle->on_cpu = 1; + + raw_spin_unlock(&rq->lock); + raw_spin_unlock_irqrestore(&idle->pi_lock, flags); + + /* Set the preempt count _outside_ the spinlocks! */ + init_idle_preempt_count(idle, cpu); + + ftrace_graph_init_idle_task(idle, cpu); + vtime_init_idle(idle, cpu); +#ifdef CONFIG_SMP + sprintf(idle->comm, "%s/%d", INIT_TASK_COMM, cpu); +#endif +} + +void resched_cpu(int cpu) +{ + struct rq *rq = cpu_rq(cpu); + unsigned long flags; + + raw_spin_lock_irqsave(&rq->lock, flags); + if (cpu_online(cpu) || cpu == smp_processor_id()) + resched_curr(cpu_rq(cpu)); + raw_spin_unlock_irqrestore(&rq->lock, flags); +} + +void wake_q_add(struct wake_q_head *head, struct task_struct *task) +{ + struct wake_q_node *node = &task->wake_q; + + /* + * Atomically grab the task, if ->wake_q is !nil already it means + * its already queued (either by us or someone else) and will get the + * wakeup due to that. + * + * This cmpxchg() implies a full barrier, which pairs with the write + * barrier implied by the wakeup in wake_up_q(). + */ + if (cmpxchg(&node->next, NULL, WAKE_Q_TAIL)) + return; + + get_task_struct(task); + + /* + * The head is context local, there can be no concurrency. + */ + *head->lastp = node; + head->lastp = &node->next; +} + +void wake_up_q(struct wake_q_head *head) +{ + struct wake_q_node *node = head->first; + + while (node != WAKE_Q_TAIL) { + struct task_struct *task; + + task = container_of(node, struct task_struct, wake_q); + BUG_ON(!task); + /* task can safely be re-inserted now: */ + node = node->next; + task->wake_q.next = NULL; + + /* + * wake_up_process() implies a wmb() to pair with the queueing + * in wake_q_add() so as not to miss wakeups. + */ + wake_up_process(task); + put_task_struct(task); + } +} + +#ifdef CONFIG_SMP + +int cpuset_cpumask_can_shrink(const struct cpumask __maybe_unused *cur, + const struct cpumask __maybe_unused *trial) +{ + return 1; +} + +int task_can_attach(struct task_struct *p, + const struct cpumask *cs_cpus_allowed) +{ + int ret = 0; + + /* + * Kthreads which disallow setaffinity shouldn't be moved + * to a new cpuset; we don't want to change their CPU + * affinity and isolating such threads by their set of + * allowed nodes is unnecessary. Thus, cpusets are not + * applicable for such threads. This prevents checking for + * success of set_cpus_allowed_ptr() on all attached tasks + * before cpus_allowed may be changed. + */ + if (p->flags & PF_NO_SETAFFINITY) + ret = -EINVAL; + + return ret; +} + +static bool sched_smp_initialized __read_mostly; + +#ifdef CONFIG_NO_HZ_COMMON +void nohz_balance_enter_idle(int cpu) +{ +} + +void select_nohz_load_balancer(int stop_tick) +{ +} + +void set_cpu_sd_state_idle(void) {} + +/* + * In the semi idle case, use the nearest busy CPU for migrating timers + * from an idle CPU. This is good for power-savings. + * + * We don't do similar optimization for completely idle system, as + * selecting an idle CPU will add more delays to the timers than intended + * (as that CPU's timer base may not be uptodate wrt jiffies etc). + */ +int get_nohz_timer_target(void) +{ + int i, cpu = smp_processor_id(); + struct cpumask *mask; + + if (!idle_cpu(cpu) && housekeeping_cpu(cpu, HK_FLAG_TIMER)) + return cpu; + + for (mask = &(per_cpu(sched_cpu_affinity_chk_masks, cpu)[0]); + mask < per_cpu(sched_cpu_affinity_chk_end_masks, cpu); mask++) + for_each_cpu(i, mask) + if (!idle_cpu(i) && housekeeping_cpu(i, HK_FLAG_TIMER)) + return i; + + if (!housekeeping_cpu(cpu, HK_FLAG_TIMER)) + cpu = housekeeping_any_cpu(HK_FLAG_TIMER); + + return cpu; +} + +/* + * When add_timer_on() enqueues a timer into the timer wheel of an + * idle CPU then this timer might expire before the next timer event + * which is scheduled to wake up that CPU. In case of a completely + * idle system the next event might even be infinite time into the + * future. wake_up_idle_cpu() ensures that the CPU is woken up and + * leaves the inner idle loop so the newly added timer is taken into + * account when the CPU goes back to idle and evaluates the timer + * wheel for the next timer event. + */ +void wake_up_idle_cpu(int cpu) +{ + if (cpu == smp_processor_id()) + return; + + set_tsk_need_resched(cpu_rq(cpu)->idle); + smp_send_reschedule(cpu); +} + +void wake_up_nohz_cpu(int cpu) +{ + wake_up_idle_cpu(cpu); +} +#endif /* CONFIG_NO_HZ_COMMON */ + +#ifdef CONFIG_HOTPLUG_CPU +/* + * Ensures that the idle task is using init_mm right before its CPU goes + * offline. + */ +void idle_task_exit(void) +{ + struct mm_struct *mm = current->active_mm; + + BUG_ON(cpu_online(smp_processor_id())); + + if (mm != &init_mm) { + switch_mm(mm, &init_mm, current); + current->active_mm = &init_mm; + finish_arch_post_lock_switch(); + } + mmdrop(mm); +} + +/* + * Migrate all tasks from the rq, sleeping tasks will be migrated by + * try_to_wake_up()->select_task_rq(). + * + * Called with rq->lock held even though we'er in stop_machine() and + * there's no concurrency possible, we hold the required locks anyway + * because of lock validation efforts. + */ +static void migrate_tasks(struct rq *dead_rq) +{ + struct rq *rq = dead_rq; + struct task_struct *p, *stop = rq->stop; + struct skiplist_node *node; + int count = 0; + + /* + * Fudge the rq selection such that the below task selection loop + * doesn't get stuck on the currently eligible stop task. + * + * We're currently inside stop_machine() and the rq is either stuck + * in the stop_machine_cpu_stop() loop, or we're executing this code, + * either way we should never end up calling schedule() until we're + * done here. + */ + rq->stop = NULL; + + node = &rq->sl_header; + while ((node = node->next[0]) != &rq->sl_header) { + int dest_cpu; + + p = skiplist_entry(node, struct task_struct, sl_node); + + /* Leave kernel tasks only on this CPU along: */ + if (p->flags & PF_KTHREAD && p->nr_cpus_allowed == 1) + continue; + + /* + * Rules for changing task_struct::cpus_allowed are holding + * both pi_lock and rq->lock, such that holding either + * stabilizes the mask. + * + * Drop rq->lock is not quite as disastrous as it usually is + * because !cpu_active at this point, which means load-balance + * will not interfere. Also, stop-machine. + */ + raw_spin_unlock(&rq->lock); + raw_spin_lock(&p->pi_lock); + raw_spin_lock(&rq->lock); + + /* + * Since we're inside stop-machine, _nothing_ should have + * changed the task, WARN if weird stuff happened, because in + * that case the above rq->lock drop is a fail too. + */ + if (WARN_ON(task_rq(p) != rq || !task_queued(p))) { + raw_spin_unlock(&p->pi_lock); + continue; + } + + count++; + if (!cpumask_intersects(&p->cpus_allowed, cpu_online_mask)) + cpumask_set_cpu(0, &p->cpus_allowed); + p->nr_cpus_allowed = cpumask_weight(&p->cpus_allowed); + dest_cpu = cpumask_any_and(&p->cpus_allowed, cpu_online_mask); + + rq = __migrate_task(rq, p, dest_cpu); + raw_spin_unlock(&rq->lock); + raw_spin_unlock(&p->pi_lock); + + rq = dead_rq; + raw_spin_lock(&rq->lock); + /* Check queued task all over from the header again */ + node = &rq->sl_header; + } + + rq->stop = stop; +} + +static void set_rq_offline(struct rq *rq) +{ + if (rq->online) + rq->online = false; +} +#endif /* CONFIG_HOTPLUG_CPU */ + +static void set_rq_online(struct rq *rq) +{ + if (!rq->online) + rq->online = true; +} + +#ifdef CONFIG_SCHED_DEBUG + +static __read_mostly int sched_debug_enabled; + +static int __init sched_debug_setup(char *str) +{ + sched_debug_enabled = 1; + + return 0; +} +early_param("sched_debug", sched_debug_setup); + +static inline bool sched_debug(void) +{ + return sched_debug_enabled; +} +#else /* !CONFIG_SCHED_DEBUG */ +static inline bool sched_debug(void) +{ + return false; +} +#endif /* CONFIG_SCHED_DEBUG */ + +#ifdef CONFIG_SMP +void scheduler_ipi(void) +{ + /* + * Fold TIF_NEED_RESCHED into the preempt_count; anybody setting + * TIF_NEED_RESCHED remotely (for the first time) will also send + * this IPI. + */ + preempt_fold_need_resched(); + + if (!idle_cpu(smp_processor_id()) || need_resched()) + return; + + irq_enter(); + irq_exit(); +} + +void wake_up_if_idle(int cpu) +{ + struct rq *rq = cpu_rq(cpu); + unsigned long flags; + + rcu_read_lock(); + + if (!is_idle_task(rcu_dereference(rq->curr))) + goto out; + + if (set_nr_if_polling(rq->idle)) { + trace_sched_wake_idle_without_ipi(cpu); + } else { + raw_spin_lock_irqsave(&rq->lock, flags); + if (is_idle_task(rq->curr)) + smp_send_reschedule(cpu); + /* Else CPU is not idle, do nothing here */ + raw_spin_unlock_irqrestore(&rq->lock, flags); + } + +out: + rcu_read_unlock(); +} + +bool cpus_share_cache(int this_cpu, int that_cpu) +{ + return per_cpu(sd_llc_id, this_cpu) == per_cpu(sd_llc_id, that_cpu); +} +#endif /* CONFIG_SMP */ + +/* + * Topology list, bottom-up. + */ +static struct sched_domain_topology_level default_topology[] = { +#ifdef CONFIG_SCHED_SMT + { cpu_smt_mask, cpu_smt_flags, SD_INIT_NAME(SMT) }, +#endif +#ifdef CONFIG_SCHED_MC + { cpu_coregroup_mask, cpu_core_flags, SD_INIT_NAME(MC) }, +#endif + { cpu_cpu_mask, SD_INIT_NAME(DIE) }, + { NULL, }, +}; + +static struct sched_domain_topology_level *sched_domain_topology = + default_topology; + +#define for_each_sd_topology(tl) \ + for (tl = sched_domain_topology; tl->mask; tl++) + +void set_sched_topology(struct sched_domain_topology_level *tl) +{ + if (WARN_ON_ONCE(sched_smp_initialized)) + return; + + sched_domain_topology = tl; +} + +/* + * Initializers for schedule domains + * Non-inlined to reduce accumulated stack pressure in build_sched_domains() + */ + +int sched_domain_level_max; + +/* + * Partition sched domains as specified by the 'ndoms_new' + * cpumasks in the array doms_new[] of cpumasks. This compares + * doms_new[] to the current sched domain partitioning, doms_cur[]. + * It destroys each deleted domain and builds each new domain. + * + * 'doms_new' is an array of cpumask_var_t's of length 'ndoms_new'. + * The masks don't intersect (don't overlap.) We should setup one + * sched domain for each mask. CPUs not in any of the cpumasks will + * not be load balanced. If the same cpumask appears both in the + * current 'doms_cur' domains and in the new 'doms_new', we can leave + * it as it is. + * + * The passed in 'doms_new' should be allocated using + * alloc_sched_domains. This routine takes ownership of it and will + * free_sched_domains it when done with it. If the caller failed the + * alloc call, then it can pass in doms_new == NULL && ndoms_new == 1, + * and partition_sched_domains() will fallback to the single partition + * 'fallback_doms', it also forces the domains to be rebuilt. + * + * If doms_new == NULL it will be replaced with cpu_online_mask. + * ndoms_new == 0 is a special case for destroying existing domains, + * and it will not create the default domain. + * + * Call with hotplug lock held + */ +void partition_sched_domains(int ndoms_new, cpumask_var_t doms_new[], + struct sched_domain_attr *dattr_new) +{ + /** + * PDS doesn't depend on sched domains, but just keep this api + */ +} + +/* + * used to mark begin/end of suspend/resume: + */ +static int num_cpus_frozen; + +/* + * Update cpusets according to cpu_active mask. If cpusets are + * disabled, cpuset_update_active_cpus() becomes a simple wrapper + * around partition_sched_domains(). + * + * If we come here as part of a suspend/resume, don't touch cpusets because we + * want to restore it back to its original state upon resume anyway. + */ +static void cpuset_cpu_active(void) +{ + if (cpuhp_tasks_frozen) { + /* + * num_cpus_frozen tracks how many CPUs are involved in suspend + * resume sequence. As long as this is not the last online + * operation in the resume sequence, just build a single sched + * domain, ignoring cpusets. + */ + partition_sched_domains(1, NULL, NULL); + if (--num_cpus_frozen) + return; + /* + * This is the last CPU online operation. So fall through and + * restore the original sched domains by considering the + * cpuset configurations. + */ + cpuset_force_rebuild(); + } + + cpuset_update_active_cpus(); +} + +static int cpuset_cpu_inactive(unsigned int cpu) +{ + if (!cpuhp_tasks_frozen) { + cpuset_update_active_cpus(); + } else { + num_cpus_frozen++; + partition_sched_domains(1, NULL, NULL); + } + return 0; +} + +int sched_cpu_activate(unsigned int cpu) +{ + struct rq *rq = cpu_rq(cpu); + unsigned long flags; + + set_cpu_active(cpu, true); + + if (sched_smp_initialized) + cpuset_cpu_active(); + + /* + * Put the rq online, if not already. This happens: + * + * 1) In the early boot process, because we build the real domains + * after all cpus have been brought up. + * + * 2) At runtime, if cpuset_cpu_active() fails to rebuild the + * domains. + */ + raw_spin_lock_irqsave(&rq->lock, flags); + set_rq_online(rq); + raw_spin_unlock_irqrestore(&rq->lock, flags); + + return 0; +} + +int sched_cpu_deactivate(unsigned int cpu) +{ + int ret; + + set_cpu_active(cpu, false); + /* + * We've cleared cpu_active_mask, wait for all preempt-disabled and RCU + * users of this state to go away such that all new such users will + * observe it. + * + * Do sync before park smpboot threads to take care the rcu boost case. + */ + synchronize_rcu_mult(call_rcu, call_rcu_sched); + + if (!sched_smp_initialized) + return 0; + + ret = cpuset_cpu_inactive(cpu); + if (ret) { + set_cpu_active(cpu, true); + return ret; + } + return 0; +} + +static void sched_rq_cpu_starting(unsigned int cpu) +{ + struct rq *rq = cpu_rq(cpu); + + rq->calc_load_update = calc_load_update; +} + +int sched_cpu_starting(unsigned int cpu) +{ + /* + * PDS doesn't have rq start time record + * set_cpu_rq_start_time(cpu); + */ + sched_rq_cpu_starting(cpu); + sched_tick_start(cpu); + return 0; +} + +#ifdef CONFIG_HOTPLUG_CPU +int sched_cpu_dying(unsigned int cpu) +{ + struct rq *rq = cpu_rq(cpu); + unsigned long flags; + + sched_tick_stop(cpu); + raw_spin_lock_irqsave(&rq->lock, flags); + set_rq_offline(rq); + migrate_tasks(rq); + raw_spin_unlock_irqrestore(&rq->lock, flags); + + hrtick_clear(rq); + return 0; +} +#endif + +#ifdef CONFIG_SMP +static void sched_init_topology_cpumask_early(void) +{ + int cpu, level; + cpumask_t *tmp; + + for_each_possible_cpu(cpu) { + for (level = 0; level < NR_CPU_AFFINITY_CHK_LEVEL; level++) { + tmp = &(per_cpu(sched_cpu_affinity_chk_masks, cpu)[level]); + cpumask_copy(tmp, cpu_possible_mask); + cpumask_clear_cpu(cpu, tmp); + } + per_cpu(sched_cpu_llc_start_mask, cpu) = + &(per_cpu(sched_cpu_affinity_chk_masks, cpu)[0]); + per_cpu(sched_cpu_affinity_chk_end_masks, cpu) = + &(per_cpu(sched_cpu_affinity_chk_masks, cpu)[1]); + } +} + +static void sched_init_topology_cpumask(void) +{ + int cpu; + cpumask_t *chk; + + for_each_online_cpu(cpu) { + chk = &(per_cpu(sched_cpu_affinity_chk_masks, cpu)[0]); + +#ifdef CONFIG_SCHED_SMT + cpumask_setall(chk); + cpumask_clear_cpu(cpu, chk); + if (cpumask_and(chk, chk, topology_sibling_cpumask(cpu))) { + printk(KERN_INFO "pds: cpu #%d affinity check mask - smt 0x%08lx", + cpu, (chk++)->bits[0]); + per_cpu(cpu_has_smt_sibling, cpu) = 1; + } +#endif + cpumask_setall(chk); + cpumask_clear_cpu(cpu, chk); + if (cpumask_and(chk, chk, cpu_coregroup_mask(cpu))) { + per_cpu(sched_cpu_llc_start_mask, cpu) = chk; + printk(KERN_INFO "pds: cpu #%d affinity check mask - coregroup 0x%08lx", + cpu, (chk++)->bits[0]); + } + cpumask_complement(chk, cpu_coregroup_mask(cpu)); + + /** + * Set up sd_llc_id per CPU + */ + per_cpu(sd_llc_id, cpu) = + cpumask_first(cpu_coregroup_mask(cpu)); + + if (cpumask_and(chk, chk, topology_core_cpumask(cpu))) + printk(KERN_INFO "pds: cpu #%d affinity check mask - core 0x%08lx", + cpu, (chk++)->bits[0]); + cpumask_complement(chk, topology_core_cpumask(cpu)); + + if (cpumask_and(chk, chk, cpu_online_mask)) + printk(KERN_INFO "pds: cpu #%d affinity check mask - others 0x%08lx", + cpu, (chk++)->bits[0]); + + per_cpu(sched_cpu_affinity_chk_end_masks, cpu) = chk; + } +} +#endif + +static inline void sched_init_rq_balance(void) +{ + unsigned long shift; + unsigned long x; + + x = num_possible_cpus(); + x = max((unsigned long)SCHED_DEFAULT_RR, x) - 1; + shift = find_last_bit(&x, sizeof(x) * 8); + x = num_possible_cpus() - 1; + + sched_balance_mask = (1UL << (shift + 1)) - 1; + sched_balance_shift = shift - find_last_bit(&x, sizeof(x) * 8); +} + +void __init sched_init_smp(void) +{ + /* Move init over to a non-isolated CPU */ + if (set_cpus_allowed_ptr(current, housekeeping_cpumask(HK_FLAG_DOMAIN)) < 0) + BUG(); + + cpumask_copy(&sched_rq_queued_masks[SCHED_RQ_EMPTY], cpu_online_mask); + + sched_init_topology_cpumask(); + + sched_init_rq_balance(); + + sched_smp_initialized = true; +} +#else +void __init sched_init_smp(void) +{ +} +#endif /* CONFIG_SMP */ + +int in_sched_functions(unsigned long addr) +{ + return in_lock_functions(addr) || + (addr >= (unsigned long)__sched_text_start + && addr < (unsigned long)__sched_text_end); +} + +void __init sched_init(void) +{ + int i; + struct rq *rq; + + print_scheduler_version(); + + sched_clock_init(); + + wait_bit_init(); + +#ifdef CONFIG_SMP + for (i = 0; i < NR_SCHED_RQ_QUEUED_LEVEL; i++) + cpumask_clear(&sched_rq_queued_masks[i]); + cpumask_setall(&sched_rq_queued_masks[SCHED_RQ_EMPTY]); + set_bit(SCHED_RQ_EMPTY, sched_rq_queued_masks_bitmap); + + cpumask_setall(&sched_rq_nr_running_masks[0]); + set_bit(0, sched_rq_nr_running_mb); +#else + uprq = &per_cpu(runqueues, 0); +#endif + for_each_possible_cpu(i) { + rq = cpu_rq(i); + FULL_INIT_SKIPLIST_NODE(&rq->sl_header); + raw_spin_lock_init(&rq->lock); + rq->dither = 0; + rq->nr_running = rq->nr_uninterruptible = 0; + rq->calc_load_active = 0; + rq->calc_load_update = jiffies + LOAD_FREQ; +#ifdef CONFIG_SMP + rq->online = false; + rq->cpu = i; + + rq->queued_level = SCHED_RQ_EMPTY; + rq->nr_running_level = 0UL; + +#ifdef CONFIG_SCHED_SMT + per_cpu(cpu_has_smt_sibling, i) = 0; + rq->active_balance = 0; +#endif +#endif + rq->nr_switches = 0; + atomic_set(&rq->nr_iowait, 0); + rq->iso_ticks = 0; + rq->iso_refractory = 0; + hrtick_rq_init(rq); + } +#ifdef CONFIG_SMP + /* Set rq->online for cpu 0 */ + cpu_rq(0)->online = true; +#endif + + /* + * The boot idle thread does lazy MMU switching as well: + */ + mmgrab(&init_mm); + enter_lazy_tlb(&init_mm, current); + + /* + * Make us the idle thread. Technically, schedule() should not be + * called from this thread, however somewhere below it might be, + * but because we are the idle thread, we just pick up running again + * when this runqueue becomes "idle". + */ + init_idle(current, smp_processor_id()); + + calc_load_update = jiffies + LOAD_FREQ; + +#ifdef CONFIG_SMP + idle_thread_set_boot_cpu(); + + sched_init_topology_cpumask_early(); + +#ifdef CONFIG_SCHED_SMT + open_softirq(SCHED_SOFTIRQ, pds_run_rebalance); +#endif +#endif /* SMP */ + + init_schedstats(); +} + +#ifdef CONFIG_DEBUG_ATOMIC_SLEEP +static inline int preempt_count_equals(int preempt_offset) +{ + int nested = preempt_count() + rcu_preempt_depth(); + + return (nested == preempt_offset); +} + +void __might_sleep(const char *file, int line, int preempt_offset) +{ + /* + * Blocking primitives will set (and therefore destroy) current->state, + * since we will exit with TASK_RUNNING make sure we enter with it, + * otherwise we will destroy state. + */ + WARN_ONCE(current->state != TASK_RUNNING && current->task_state_change, + "do not call blocking ops when !TASK_RUNNING; " + "state=%lx set at [<%p>] %pS\n", + current->state, + (void *)current->task_state_change, + (void *)current->task_state_change); + + ___might_sleep(file, line, preempt_offset); +} +EXPORT_SYMBOL(__might_sleep); + +void ___might_sleep(const char *file, int line, int preempt_offset) +{ + /* Ratelimiting timestamp: */ + static unsigned long prev_jiffy; + + unsigned long preempt_disable_ip; + + /* WARN_ON_ONCE() by default, no rate limit required: */ + rcu_sleep_check(); + + if ((preempt_count_equals(preempt_offset) && !irqs_disabled() && + !is_idle_task(current)) || + system_state == SYSTEM_BOOTING || system_state > SYSTEM_RUNNING || + oops_in_progress) + return; + if (time_before(jiffies, prev_jiffy + HZ) && prev_jiffy) + return; + prev_jiffy = jiffies; + + /* Save this before calling printk(), since that will clobber it: */ + preempt_disable_ip = get_preempt_disable_ip(current); + + printk(KERN_ERR + "BUG: sleeping function called from invalid context at %s:%d\n", + file, line); + printk(KERN_ERR + "in_atomic(): %d, irqs_disabled(): %d, pid: %d, name: %s\n", + in_atomic(), irqs_disabled(), + current->pid, current->comm); + + if (task_stack_end_corrupted(current)) + printk(KERN_EMERG "Thread overran stack, or stack corrupted\n"); + + debug_show_held_locks(current); + if (irqs_disabled()) + print_irqtrace_events(current); +#ifdef CONFIG_DEBUG_PREEMPT + if (!preempt_count_equals(preempt_offset)) { + pr_err("Preemption disabled at:"); + print_ip_sym(preempt_disable_ip); + pr_cont("\n"); + } +#endif + dump_stack(); + add_taint(TAINT_WARN, LOCKDEP_STILL_OK); +} +EXPORT_SYMBOL(___might_sleep); +#endif + +#ifdef CONFIG_MAGIC_SYSRQ +void normalize_rt_tasks(void) +{ + struct task_struct *g, *p; + struct sched_attr attr = { + .sched_policy = SCHED_NORMAL, + }; + + read_lock(&tasklist_lock); + for_each_process_thread(g, p) { + /* + * Only normalize user tasks: + */ + if (p->flags & PF_KTHREAD) + continue; + + if (!rt_task(p) && !iso_task(p)) { + /* + * Renice negative nice level userspace + * tasks back to 0: + */ + if (task_nice(p) < 0) + set_user_nice(p, 0); + continue; + } + + __sched_setscheduler(p, &attr, false, false); + } + read_unlock(&tasklist_lock); +} +#endif /* CONFIG_MAGIC_SYSRQ */ + +#if defined(CONFIG_IA64) || defined(CONFIG_KGDB_KDB) +/* + * These functions are only useful for the IA64 MCA handling, or kdb. + * + * They can only be called when the whole system has been + * stopped - every CPU needs to be quiescent, and no scheduling + * activity can take place. Using them for anything else would + * be a serious bug, and as a result, they aren't even visible + * under any other configuration. + */ + +/** + * curr_task - return the current task for a given CPU. + * @cpu: the processor in question. + * + * ONLY VALID WHEN THE WHOLE SYSTEM IS STOPPED! + * + * Return: The current task for @cpu. + */ +struct task_struct *curr_task(int cpu) +{ + return cpu_curr(cpu); +} + +#endif /* defined(CONFIG_IA64) || defined(CONFIG_KGDB_KDB) */ + +#ifdef CONFIG_IA64 +/** + * set_curr_task - set the current task for a given CPU. + * @cpu: the processor in question. + * @p: the task pointer to set. + * + * Description: This function must only be used when non-maskable interrupts + * are serviced on a separate stack. It allows the architecture to switch the + * notion of the current task on a CPU in a non-blocking manner. This function + * must be called with all CPU's synchronised, and interrupts disabled, the + * and caller must save the original value of the current task (see + * curr_task() above) and restore that value before reenabling interrupts and + * re-starting the system. + * + * ONLY VALID WHEN THE WHOLE SYSTEM IS STOPPED! + */ +void ia64_set_curr_task(int cpu, struct task_struct *p) +{ + cpu_curr(cpu) = p; +} + +#endif + +#ifdef CONFIG_SCHED_DEBUG +void proc_sched_show_task(struct task_struct *p, struct pid_namespace *ns, + struct seq_file *m) +{} + +void proc_sched_set_task(struct task_struct *p) +{} +#endif + +#undef CREATE_TRACE_POINTS diff --git a/kernel/sched/pds_sched.h b/kernel/sched/pds_sched.h new file mode 100644 index 00000000000..8acf8698bd3 --- /dev/null +++ b/kernel/sched/pds_sched.h @@ -0,0 +1,352 @@ +#ifndef PDS_SCHED_H +#define PDS_SCHED_H + +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#ifdef CONFIG_PARAVIRT +# include +#endif + +#include "cpupri.h" + +/* + * This is the main, per-CPU runqueue data structure. + * This data should only be modified by the local cpu. + */ +struct rq { + /* runqueue lock: */ + raw_spinlock_t lock; + + struct task_struct *curr, *idle, *stop; + struct mm_struct *prev_mm; + + struct skiplist_node sl_header; + + /* switch count */ + u64 nr_switches; + + atomic_t nr_iowait; + + int iso_ticks; + bool iso_refractory; + +#ifdef CONFIG_SMP + int cpu; /* cpu of this runqueue */ + bool online; + +#ifdef CONFIG_SCHED_SMT + int active_balance; + struct cpu_stop_work active_balance_work; +#endif +#endif /* CONFIG_SMP */ +#ifdef CONFIG_IRQ_TIME_ACCOUNTING + u64 prev_irq_time; +#endif /* CONFIG_IRQ_TIME_ACCOUNTING */ +#ifdef CONFIG_PARAVIRT + u64 prev_steal_time; +#endif /* CONFIG_PARAVIRT */ +#ifdef CONFIG_PARAVIRT_TIME_ACCOUNTING + u64 prev_steal_time_rq; +#endif /* CONFIG_PARAVIRT_TIME_ACCOUNTING */ + + /* calc_load related fields */ + unsigned long calc_load_update; + long calc_load_active; + + u64 clock, last_tick; + u64 clock_task; + int dither; + + unsigned long nr_running; + unsigned long nr_uninterruptible; + + unsigned long nr_running_level; + unsigned long queued_level; + +#ifdef CONFIG_SCHED_HRTICK +#ifdef CONFIG_SMP + int hrtick_csd_pending; + call_single_data_t hrtick_csd; +#endif + struct hrtimer hrtick_timer; +#endif + +#ifdef CONFIG_SCHEDSTATS + + /* latency stats */ + struct sched_info rq_sched_info; + unsigned long long rq_cpu_time; + /* could above be rq->cfs_rq.exec_clock + rq->rt_rq.rt_runtime ? */ + + /* sys_sched_yield() stats */ + unsigned int yld_count; + + /* schedule() stats */ + unsigned int sched_switch; + unsigned int sched_count; + unsigned int sched_goidle; + + /* try_to_wake_up() stats */ + unsigned int ttwu_count; + unsigned int ttwu_local; +#endif /* CONFIG_SCHEDSTATS */ +#ifdef CONFIG_CPU_IDLE + /* Must be inspected within a rcu lock section */ + struct cpuidle_state *idle_state; +#endif +}; + +extern unsigned long calc_load_update; +extern atomic_long_t calc_load_tasks; + +extern void calc_global_load_tick(struct rq *this_rq); +extern long calc_load_fold_active(struct rq *this_rq, long adjust); + +#ifndef CONFIG_SMP +extern struct rq *uprq; +#define cpu_rq(cpu) (uprq) +#define this_rq() (uprq) +#define raw_rq() (uprq) +#define task_rq(p) (uprq) +#define cpu_curr(cpu) ((uprq)->curr) +#else /* CONFIG_SMP */ +DECLARE_PER_CPU_SHARED_ALIGNED(struct rq, runqueues); +#define cpu_rq(cpu) (&per_cpu(runqueues, (cpu))) +#define this_rq() this_cpu_ptr(&runqueues) +#define raw_rq() raw_cpu_ptr(&runqueues) +#define task_rq(p) cpu_rq(task_cpu(p)) +#define cpu_curr(cpu) (cpu_rq(cpu)->curr) + +#if defined(CONFIG_SCHED_DEBUG) && defined(CONFIG_SYSCTL) +void register_sched_domain_sysctl(void); +void unregister_sched_domain_sysctl(void); +#else +static inline void register_sched_domain_sysctl(void) +{ +} +static inline void unregister_sched_domain_sysctl(void) +{ +} +#endif + +#endif /* CONFIG_SMP */ + +static inline u64 __rq_clock_broken(struct rq *rq) +{ + return READ_ONCE(rq->clock); +} + +static inline u64 rq_clock(struct rq *rq) +{ + /* + * Relax lockdep_assert_held() checking as in VRQ, call to + * sched_info_xxxx() may not held rq->lock + * lockdep_assert_held(&rq->lock); + */ + return rq->clock; +} + +static inline u64 rq_clock_task(struct rq *rq) +{ + /* + * Relax lockdep_assert_held() checking as in VRQ, call to + * sched_info_xxxx() may not held rq->lock + * lockdep_assert_held(&rq->lock); + */ + return rq->clock_task; +} + +struct rq +*task_access_lock_irqsave(struct task_struct *p, raw_spinlock_t **plock, + unsigned long *flags); + +static inline void +task_access_unlock_irqrestore(struct task_struct *p, raw_spinlock_t *lock, + unsigned long *flags) +{ + raw_spin_unlock_irqrestore(lock, *flags); +} + +static inline bool task_running(struct task_struct *p) +{ + return p->on_cpu; +} + +#include "stats.h" + +extern struct static_key_false sched_schedstats; + +static inline void sched_ttwu_pending(void) { } + +#ifdef CONFIG_CPU_IDLE +static inline void idle_set_state(struct rq *rq, + struct cpuidle_state *idle_state) +{ + rq->idle_state = idle_state; +} + +static inline struct cpuidle_state *idle_get_state(struct rq *rq) +{ + WARN_ON(!rcu_read_lock_held()); + return rq->idle_state; +} +#else +static inline void idle_set_state(struct rq *rq, + struct cpuidle_state *idle_state) +{ +} + +static inline struct cpuidle_state *idle_get_state(struct rq *rq) +{ + return NULL; +} +#endif + +static inline int cpu_of(struct rq *rq) +{ +#ifdef CONFIG_SMP + return rq->cpu; +#else + return 0; +#endif +} + +#ifdef CONFIG_IRQ_TIME_ACCOUNTING +struct irqtime { + u64 total; + u64 tick_delta; + u64 irq_start_time; + struct u64_stats_sync sync; +}; + +DECLARE_PER_CPU(struct irqtime, cpu_irqtime); + +/* + * Returns the irqtime minus the softirq time computed by ksoftirqd. + * Otherwise ksoftirqd's sum_exec_runtime is substracted its own runtime + * and never move forward. + */ +static inline u64 irq_time_read(int cpu) +{ + struct irqtime *irqtime = &per_cpu(cpu_irqtime, cpu); + unsigned int seq; + u64 total; + + do { + seq = __u64_stats_fetch_begin(&irqtime->sync); + total = irqtime->total; + } while (__u64_stats_fetch_retry(&irqtime->sync, seq)); + + return total; +} +#endif /* CONFIG_IRQ_TIME_ACCOUNTING */ + +#ifdef CONFIG_CPU_FREQ +DECLARE_PER_CPU(struct update_util_data *, cpufreq_update_util_data); + +/** + * cpufreq_update_util - Take a note about CPU utilization changes. + * @rq: Runqueue to carry out the update for. + * @flags: Update reason flags. + * + * This function is called by the scheduler on the CPU whose utilization is + * being updated. + * + * It can only be called from RCU-sched read-side critical sections. + * + * The way cpufreq is currently arranged requires it to evaluate the CPU + * performance state (frequency/voltage) on a regular basis to prevent it from + * being stuck in a completely inadequate performance level for too long. + * That is not guaranteed to happen if the updates are only triggered from CFS + * and DL, though, because they may not be coming in if only RT tasks are + * active all the time (or there are RT tasks only). + * + * As a workaround for that issue, this function is called periodically by the + * RT sched class to trigger extra cpufreq updates to prevent it from stalling, + * but that really is a band-aid. Going forward it should be replaced with + * solutions targeted more specifically at RT tasks. + */ +static inline void cpufreq_update_util(struct rq *rq, unsigned int flags) +{ + struct update_util_data *data; + + data = rcu_dereference_sched(*this_cpu_ptr(&cpufreq_update_util_data)); + if (data) + data->func(data, rq_clock(rq), flags); +} + +static inline void cpufreq_update_this_cpu(struct rq *rq, unsigned int flags) +{ + if (cpu_of(rq) == smp_processor_id()) + cpufreq_update_util(rq, flags); +} +#else +static inline void cpufreq_update_util(struct rq *rq, unsigned int flags) {} +static inline void cpufreq_update_this_cpu(struct rq *rq, unsigned int flags) {} +#endif /* CONFIG_CPU_FREQ */ + +#ifdef CONFIG_NO_HZ_FULL +extern int __init sched_tick_offload_init(void); +#else +static inline int sched_tick_offload_init(void) { return 0; } +#endif + +#ifdef CONFIG_SMP +#ifndef arch_scale_cpu_capacity +static __always_inline +unsigned long arch_scale_cpu_capacity(struct sched_domain *sd, int cpu) +{ + if (sd && (sd->flags & SD_SHARE_CPUCAPACITY) && (sd->span_weight > 1)) + return sd->smt_gain / sd->span_weight; + + return SCHED_CAPACITY_SCALE; +} +#endif +#endif + +#ifdef arch_scale_freq_capacity +#ifndef arch_scale_freq_invariant +#define arch_scale_freq_invariant() (true) +#endif +#else /* arch_scale_freq_capacity */ +#define arch_scale_freq_invariant() (false) +#endif + +extern void schedule_idle(void); + +#endif /* PDS_SCHED_H */ diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index c7742dcc136..ab40b581114 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -2,6 +2,10 @@ /* * Scheduler internal types and methods: */ +#ifdef CONFIG_SCHED_PDS +#include "pds_sched.h" +#else + #include #include @@ -2194,3 +2198,4 @@ static inline unsigned long cpu_util_cfs(struct rq *rq) return util; } #endif +#endif /* CONFIG_SCHED_PDS */ diff --git a/kernel/sched/stats.c b/kernel/sched/stats.c index 750fb3c67ee..45bd4394257 100644 --- a/kernel/sched/stats.c +++ b/kernel/sched/stats.c @@ -22,8 +22,10 @@ static int show_schedstat(struct seq_file *seq, void *v) } else { struct rq *rq; #ifdef CONFIG_SMP +#ifndef CONFIG_SCHED_PDS struct sched_domain *sd; int dcount = 0; +#endif #endif cpu = (unsigned long)(v - 2); rq = cpu_rq(cpu); @@ -40,6 +42,7 @@ static int show_schedstat(struct seq_file *seq, void *v) seq_printf(seq, "\n"); #ifdef CONFIG_SMP +#ifndef CONFIG_SCHED_PDS /* domain-specific stats */ rcu_read_lock(); for_each_domain(cpu, sd) { @@ -68,6 +71,7 @@ static int show_schedstat(struct seq_file *seq, void *v) sd->ttwu_move_balance); } rcu_read_unlock(); +#endif #endif } return 0; diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 2d9837c0aff..06d249c422f 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -105,6 +105,9 @@ extern int core_uses_pid; extern char core_pattern[]; extern unsigned int core_pipe_limit; #endif +#ifdef CONFIG_USER_NS +extern int unprivileged_userns_clone; +#endif extern int pid_max; extern int pid_max_min, pid_max_max; extern int percpu_pagelist_fraction; @@ -126,8 +129,13 @@ static int __maybe_unused one = 1; static int __maybe_unused two = 2; static int __maybe_unused four = 4; static unsigned long one_ul = 1; -static int one_hundred = 100; -static int one_thousand = 1000; +static int __read_mostly one_hundred = 100; +static int __read_mostly one_thousand = 1000; +#ifdef CONFIG_SCHED_PDS +extern int rr_interval; +extern int sched_iso_cpu; +extern int sched_yield_type; +#endif #ifdef CONFIG_PRINTK static int ten_thousand = 10000; #endif @@ -292,7 +300,7 @@ static struct ctl_table sysctl_base_table[] = { { } }; -#ifdef CONFIG_SCHED_DEBUG +#if defined(CONFIG_SCHED_DEBUG) && !defined(CONFIG_SCHED_PDS) static int min_sched_granularity_ns = 100000; /* 100 usecs */ static int max_sched_granularity_ns = NSEC_PER_SEC; /* 1 second */ static int min_wakeup_granularity_ns; /* 0 usecs */ @@ -309,6 +317,7 @@ static int max_extfrag_threshold = 1000; #endif static struct ctl_table kern_table[] = { +#ifndef CONFIG_SCHED_PDS { .procname = "sched_child_runs_first", .data = &sysctl_sched_child_runs_first, @@ -471,6 +480,7 @@ static struct ctl_table kern_table[] = { .extra1 = &one, }, #endif +#endif /* !CONFIG_SCHED_PDS */ #ifdef CONFIG_PROVE_LOCKING { .procname = "prove_locking", @@ -519,6 +529,15 @@ static struct ctl_table kern_table[] = { .proc_handler = proc_dointvec, }, #endif +#ifdef CONFIG_USER_NS + { + .procname = "unprivileged_userns_clone", + .data = &unprivileged_userns_clone, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec, + }, +#endif #ifdef CONFIG_PROC_SYSCTL { .procname = "tainted", @@ -1036,6 +1055,35 @@ static struct ctl_table kern_table[] = { .proc_handler = proc_dointvec, }, #endif +#ifdef CONFIG_SCHED_PDS + { + .procname = "rr_interval", + .data = &rr_interval, + .maxlen = sizeof (int), + .mode = 0644, + .proc_handler = &proc_dointvec_minmax, + .extra1 = &one, + .extra2 = &one_thousand, + }, + { + .procname = "iso_cpu", + .data = &sched_iso_cpu, + .maxlen = sizeof (int), + .mode = 0644, + .proc_handler = &proc_dointvec_minmax, + .extra1 = &zero, + .extra2 = &one_hundred, + }, + { + .procname = "yield_type", + .data = &sched_yield_type, + .maxlen = sizeof (int), + .mode = 0644, + .proc_handler = &proc_dointvec_minmax, + .extra1 = &zero, + .extra2 = &two, + }, +#endif #if defined(CONFIG_S390) && defined(CONFIG_SMP) { .procname = "spin_retry", diff --git a/kernel/task_work.c b/kernel/task_work.c index 0fef395662a..83fb1ecfc33 100644 --- a/kernel/task_work.c +++ b/kernel/task_work.c @@ -116,3 +116,4 @@ void task_work_run(void) } while (work); } } +EXPORT_SYMBOL_GPL(task_work_run); diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c index 9cdf54b04ca..2e800a77bf1 100644 --- a/kernel/time/posix-cpu-timers.c +++ b/kernel/time/posix-cpu-timers.c @@ -791,6 +791,7 @@ check_timers_list(struct list_head *timers, return 0; } +#ifndef CONFIG_SCHED_PDS static inline void check_dl_overrun(struct task_struct *tsk) { if (tsk->dl.dl_overrun) { @@ -798,6 +799,7 @@ static inline void check_dl_overrun(struct task_struct *tsk) __group_send_sig_info(SIGXCPU, SEND_SIG_PRIV, tsk); } } +#endif /* * Check for any per-thread CPU timers that have fired and move them off @@ -812,8 +814,10 @@ static void check_thread_timers(struct task_struct *tsk, u64 expires; unsigned long soft; +#ifndef CONFIG_SCHED_PDS if (dl_task(tsk)) check_dl_overrun(tsk); +#endif /* * If cputime_expires is zero, then there are no active @@ -829,7 +833,7 @@ static void check_thread_timers(struct task_struct *tsk, tsk_expires->virt_exp = expires; tsk_expires->sched_exp = check_timers_list(++timers, firing, - tsk->se.sum_exec_runtime); + tsk_seruntime(tsk)); /* * Check for the special case thread timers. @@ -839,7 +843,7 @@ static void check_thread_timers(struct task_struct *tsk, unsigned long hard = task_rlimit_max(tsk, RLIMIT_RTTIME); if (hard != RLIM_INFINITY && - tsk->rt.timeout > DIV_ROUND_UP(hard, USEC_PER_SEC/HZ)) { + tsk_rttimeout(tsk) > DIV_ROUND_UP(hard, USEC_PER_SEC/HZ)) { /* * At the hard limit, we just die. * No need to calculate anything else now. @@ -851,7 +855,7 @@ static void check_thread_timers(struct task_struct *tsk, __group_send_sig_info(SIGKILL, SEND_SIG_PRIV, tsk); return; } - if (tsk->rt.timeout > DIV_ROUND_UP(soft, USEC_PER_SEC/HZ)) { + if (tsk_rttimeout(tsk) > DIV_ROUND_UP(soft, USEC_PER_SEC/HZ)) { /* * At the soft limit, send a SIGXCPU every second. */ @@ -917,8 +921,10 @@ static void check_process_timers(struct task_struct *tsk, struct task_cputime cputime; unsigned long soft; +#ifndef CONFIG_SCHED_PDS if (dl_task(tsk)) check_dl_overrun(tsk); +#endif /* * If cputimer is not running, then there are no active @@ -1094,7 +1100,7 @@ static inline int fastpath_timer_check(struct task_struct *tsk) struct task_cputime task_sample; task_cputime(tsk, &task_sample.utime, &task_sample.stime); - task_sample.sum_exec_runtime = tsk->se.sum_exec_runtime; + task_sample.sum_exec_runtime = tsk_seruntime(tsk); if (task_cputime_expired(&task_sample, &tsk->cputime_expires)) return 1; } @@ -1124,8 +1130,10 @@ static inline int fastpath_timer_check(struct task_struct *tsk) return 1; } +#ifndef CONFIG_SCHED_PDS if (dl_task(tsk) && tsk->dl.dl_overrun) return 1; +#endif return 0; } diff --git a/kernel/trace/trace_selftest.c b/kernel/trace/trace_selftest.c index 11e9daa4a56..1c708455227 100644 --- a/kernel/trace/trace_selftest.c +++ b/kernel/trace/trace_selftest.c @@ -1041,10 +1041,15 @@ static int trace_wakeup_test_thread(void *data) { /* Make this a -deadline thread */ static const struct sched_attr attr = { +#ifdef CONFIG_SCHED_PDS + /* No deadline on BFS, use RR */ + .sched_policy = SCHED_RR, +#else .sched_policy = SCHED_DEADLINE, .sched_runtime = 100000ULL, .sched_deadline = 10000000ULL, .sched_period = 10000000ULL +#endif }; struct wakeup_test_data *x = data; diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c index c3d7583fcd2..c7ef38bada8 100644 --- a/kernel/user_namespace.c +++ b/kernel/user_namespace.c @@ -26,6 +26,13 @@ #include #include +/* sysctl */ +#ifdef CONFIG_USER_NS_UNPRIVILEGED +int unprivileged_userns_clone = 1; +#else +int unprivileged_userns_clone; +#endif + static struct kmem_cache *user_ns_cachep __read_mostly; static DEFINE_MUTEX(userns_state_mutex); diff --git a/lib/Makefile b/lib/Makefile index 90dc5520b78..141a0ab0040 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -18,7 +18,7 @@ KCOV_INSTRUMENT_debugobjects.o := n KCOV_INSTRUMENT_dynamic_debug.o := n lib-y := ctype.o string.o vsprintf.o cmdline.o \ - rbtree.o radix-tree.o timerqueue.o\ + rbtree.o radix-tree.o sradix-tree.o timerqueue.o\ idr.o int_sqrt.o extable.o \ sha1.o chacha20.o irq_regs.o argv_split.o \ flex_proportions.o ratelimit.o show_mem.o \ diff --git a/lib/sradix-tree.c b/lib/sradix-tree.c new file mode 100644 index 00000000000..ab21e6309b9 --- /dev/null +++ b/lib/sradix-tree.c @@ -0,0 +1,476 @@ +#include +#include +#include +#include +#include +#include +#include + +static inline int sradix_node_full(struct sradix_tree_root *root, struct sradix_tree_node *node) +{ + return node->fulls == root->stores_size || + (node->height == 1 && node->count == root->stores_size); +} + +/* + * Extend a sradix tree so it can store key @index. + */ +static int sradix_tree_extend(struct sradix_tree_root *root, unsigned long index) +{ + struct sradix_tree_node *node; + unsigned int height; + + if (unlikely(root->rnode == NULL)) { + if (!(node = root->alloc())) + return -ENOMEM; + + node->height = 1; + root->rnode = node; + root->height = 1; + } + + /* Figure out what the height should be. */ + height = root->height; + index >>= root->shift * height; + + while (index) { + index >>= root->shift; + height++; + } + + while (height > root->height) { + unsigned int newheight; + + if (!(node = root->alloc())) + return -ENOMEM; + + /* Increase the height. */ + node->stores[0] = root->rnode; + root->rnode->parent = node; + if (root->extend) + root->extend(node, root->rnode); + + newheight = root->height + 1; + node->height = newheight; + node->count = 1; + if (sradix_node_full(root, root->rnode)) + node->fulls = 1; + + root->rnode = node; + root->height = newheight; + } + + return 0; +} + +/* + * Search the next item from the current node, that is not NULL + * and can satify root->iter(). + */ +void *sradix_tree_next(struct sradix_tree_root *root, + struct sradix_tree_node *node, unsigned long index, + int (*iter)(void *item, unsigned long height)) +{ + unsigned long offset; + void *item; + + if (unlikely(node == NULL)) { + node = root->rnode; + for (offset = 0; offset < root->stores_size; offset++) { + item = node->stores[offset]; + if (item && (!iter || iter(item, node->height))) + break; + } + + if (unlikely(offset >= root->stores_size)) + return NULL; + + if (node->height == 1) + return item; + else + goto go_down; + } + + while (node) { + offset = (index & root->mask) + 1; + for (; offset < root->stores_size; offset++) { + item = node->stores[offset]; + if (item && (!iter || iter(item, node->height))) + break; + } + + if (offset < root->stores_size) + break; + + node = node->parent; + index >>= root->shift; + } + + if (!node) + return NULL; + + while (node->height > 1) { +go_down: + node = item; + for (offset = 0; offset < root->stores_size; offset++) { + item = node->stores[offset]; + if (item && (!iter || iter(item, node->height))) + break; + } + + if (unlikely(offset >= root->stores_size)) + return NULL; + } + + BUG_ON(offset > root->stores_size); + + return item; +} + +/* + * Blindly insert the item to the tree. Typically, we reuse the + * first empty store item. + */ +int sradix_tree_enter(struct sradix_tree_root *root, void **item, int num) +{ + unsigned long index; + unsigned int height; + struct sradix_tree_node *node, *tmp = NULL; + int offset, offset_saved; + void **store = NULL; + int error, i, j, shift; + +go_on: + index = root->min; + + if (root->enter_node && !sradix_node_full(root, root->enter_node)) { + node = root->enter_node; + BUG_ON((index >> (root->shift * root->height))); + } else { + node = root->rnode; + if (node == NULL || (index >> (root->shift * root->height)) + || sradix_node_full(root, node)) { + error = sradix_tree_extend(root, index); + if (error) + return error; + + node = root->rnode; + } + } + + + height = node->height; + shift = (height - 1) * root->shift; + offset = (index >> shift) & root->mask; + while (shift > 0) { + offset_saved = offset; + for (; offset < root->stores_size; offset++) { + store = &node->stores[offset]; + tmp = *store; + + if (!tmp || !sradix_node_full(root, tmp)) + break; + } + BUG_ON(offset >= root->stores_size); + + if (offset != offset_saved) { + index += (offset - offset_saved) << shift; + index &= ~((1UL << shift) - 1); + } + + if (!tmp) { + if (!(tmp = root->alloc())) + return -ENOMEM; + + tmp->height = shift / root->shift; + *store = tmp; + tmp->parent = node; + node->count++; +// if (root->extend) +// root->extend(node, tmp); + } + + node = tmp; + shift -= root->shift; + offset = (index >> shift) & root->mask; + } + + BUG_ON(node->height != 1); + + + store = &node->stores[offset]; + for (i = 0, j = 0; + j < root->stores_size - node->count && + i < root->stores_size - offset && j < num; i++) { + if (!store[i]) { + store[i] = item[j]; + if (root->assign) + root->assign(node, index + i, item[j]); + j++; + } + } + + node->count += j; + root->num += j; + num -= j; + + while (sradix_node_full(root, node)) { + node = node->parent; + if (!node) + break; + + node->fulls++; + } + + if (unlikely(!node)) { + /* All nodes are full */ + root->min = 1 << (root->height * root->shift); + root->enter_node = NULL; + } else { + root->min = index + i - 1; + root->min |= (1UL << (node->height - 1)) - 1; + root->min++; + root->enter_node = node; + } + + if (num) { + item += j; + goto go_on; + } + + return 0; +} + + +/** + * sradix_tree_shrink - shrink height of a sradix tree to minimal + * @root sradix tree root + * + */ +static inline void sradix_tree_shrink(struct sradix_tree_root *root) +{ + /* try to shrink tree height */ + while (root->height > 1) { + struct sradix_tree_node *to_free = root->rnode; + + /* + * The candidate node has more than one child, or its child + * is not at the leftmost store, we cannot shrink. + */ + if (to_free->count != 1 || !to_free->stores[0]) + break; + + root->rnode = to_free->stores[0]; + root->rnode->parent = NULL; + root->height--; + if (unlikely(root->enter_node == to_free)) + root->enter_node = NULL; + root->free(to_free); + } +} + +/* + * Del the item on the known leaf node and index + */ +void sradix_tree_delete_from_leaf(struct sradix_tree_root *root, + struct sradix_tree_node *node, unsigned long index) +{ + unsigned int offset; + struct sradix_tree_node *start, *end; + + BUG_ON(node->height != 1); + + start = node; + while (node && !(--node->count)) + node = node->parent; + + end = node; + if (!node) { + root->rnode = NULL; + root->height = 0; + root->min = 0; + root->num = 0; + root->enter_node = NULL; + } else { + offset = (index >> (root->shift * (node->height - 1))) & root->mask; + if (root->rm) + root->rm(node, offset); + node->stores[offset] = NULL; + root->num--; + if (root->min > index) { + root->min = index; + root->enter_node = node; + } + } + + if (start != end) { + do { + node = start; + start = start->parent; + if (unlikely(root->enter_node == node)) + root->enter_node = end; + root->free(node); + } while (start != end); + + /* + * Note that shrink may free "end", so enter_node still need to + * be checked inside. + */ + sradix_tree_shrink(root); + } else if (node->count == root->stores_size - 1) { + /* It WAS a full leaf node. Update the ancestors */ + node = node->parent; + while (node) { + node->fulls--; + if (node->fulls != root->stores_size - 1) + break; + + node = node->parent; + } + } +} + +void *sradix_tree_lookup(struct sradix_tree_root *root, unsigned long index) +{ + unsigned int height, offset; + struct sradix_tree_node *node; + int shift; + + node = root->rnode; + if (node == NULL || (index >> (root->shift * root->height))) + return NULL; + + height = root->height; + shift = (height - 1) * root->shift; + + do { + offset = (index >> shift) & root->mask; + node = node->stores[offset]; + if (!node) + return NULL; + + shift -= root->shift; + } while (shift >= 0); + + return node; +} + +/* + * Return the item if it exists, otherwise create it in place + * and return the created item. + */ +void *sradix_tree_lookup_create(struct sradix_tree_root *root, + unsigned long index, void *(*item_alloc)(void)) +{ + unsigned int height, offset; + struct sradix_tree_node *node, *tmp; + void *item; + int shift, error; + + if (root->rnode == NULL || (index >> (root->shift * root->height))) { + if (item_alloc) { + error = sradix_tree_extend(root, index); + if (error) + return NULL; + } else { + return NULL; + } + } + + node = root->rnode; + height = root->height; + shift = (height - 1) * root->shift; + + do { + offset = (index >> shift) & root->mask; + if (!node->stores[offset]) { + if (!(tmp = root->alloc())) + return NULL; + + tmp->height = shift / root->shift; + node->stores[offset] = tmp; + tmp->parent = node; + node->count++; + node = tmp; + } else { + node = node->stores[offset]; + } + + shift -= root->shift; + } while (shift > 0); + + BUG_ON(node->height != 1); + offset = index & root->mask; + if (node->stores[offset]) { + return node->stores[offset]; + } else if (item_alloc) { + if (!(item = item_alloc())) + return NULL; + + node->stores[offset] = item; + + /* + * NOTE: we do NOT call root->assign here, since this item is + * newly created by us having no meaning. Caller can call this + * if it's necessary to do so. + */ + + node->count++; + root->num++; + + while (sradix_node_full(root, node)) { + node = node->parent; + if (!node) + break; + + node->fulls++; + } + + if (unlikely(!node)) { + /* All nodes are full */ + root->min = 1 << (root->height * root->shift); + } else { + if (root->min == index) { + root->min |= (1UL << (node->height - 1)) - 1; + root->min++; + root->enter_node = node; + } + } + + return item; + } else { + return NULL; + } + +} + +int sradix_tree_delete(struct sradix_tree_root *root, unsigned long index) +{ + unsigned int height, offset; + struct sradix_tree_node *node; + int shift; + + node = root->rnode; + if (node == NULL || (index >> (root->shift * root->height))) + return -ENOENT; + + height = root->height; + shift = (height - 1) * root->shift; + + do { + offset = (index >> shift) & root->mask; + node = node->stores[offset]; + if (!node) + return -ENOENT; + + shift -= root->shift; + } while (shift > 0); + + offset = index & root->mask; + if (!node->stores[offset]) + return -ENOENT; + + sradix_tree_delete_from_leaf(root, node, index); + + return 0; +} diff --git a/mm/Kconfig b/mm/Kconfig index ce95491abd6..8621f3137a9 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -308,6 +308,32 @@ config KSM See Documentation/vm/ksm.rst for more information: KSM is inactive until a program has madvised that an area is MADV_MERGEABLE, and root has set /sys/kernel/mm/ksm/run to 1 (if CONFIG_SYSFS is set). +choice + prompt "Choose UKSM/KSM strategy" + default UKSM + depends on KSM + help + This option allows to select a UKSM/KSM stragety. + +config UKSM + bool "Ultra-KSM for page merging" + depends on KSM + help + UKSM is inspired by the Linux kernel project \u2014 KSM(Kernel Same + page Merging), but with a fundamentally rewritten core algorithm. With + an advanced algorithm, UKSM now can transparently scans all anonymously + mapped user space applications with an significantly improved scan speed + and CPU efficiency. Since KVM is friendly to KSM, KVM can also benefit from + UKSM. Now UKSM has its first stable release and first real world enterprise user. + For more information, please goto its project page. + (www.kerneldedup.org) + +config KSM_LEGACY + bool "Legacy KSM implementation" + depends on KSM + help + The legacy KSM implementation from Red Hat. +endchoice config DEFAULT_MMAP_MIN_ADDR int "Low address space to protect from user allocation" diff --git a/mm/Makefile b/mm/Makefile index 8716bdabe1e..2f7da3f04da 100644 --- a/mm/Makefile +++ b/mm/Makefile @@ -39,7 +39,7 @@ obj-y := filemap.o mempool.o oom_kill.o \ mm_init.o mmu_context.o percpu.o slab_common.o \ compaction.o vmacache.o \ interval_tree.o list_lru.o workingset.o \ - debug.o $(mmu-y) + prfile.o debug.o $(mmu-y) obj-y += init-mm.o @@ -65,7 +65,8 @@ obj-$(CONFIG_SPARSEMEM) += sparse.o obj-$(CONFIG_SPARSEMEM_VMEMMAP) += sparse-vmemmap.o obj-$(CONFIG_SLOB) += slob.o obj-$(CONFIG_MMU_NOTIFIER) += mmu_notifier.o -obj-$(CONFIG_KSM) += ksm.o +obj-$(CONFIG_KSM_LEGACY) += ksm.o +obj-$(CONFIG_UKSM) += uksm.o obj-$(CONFIG_PAGE_POISONING) += page_poison.o obj-$(CONFIG_SLAB) += slab.o obj-$(CONFIG_SLUB) += slub.o diff --git a/mm/filemap.c b/mm/filemap.c index 52517f28e6f..250f675dcfb 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -2700,7 +2700,7 @@ vm_fault_t filemap_page_mkwrite(struct vm_fault *vmf) vm_fault_t ret = VM_FAULT_LOCKED; sb_start_pagefault(inode->i_sb); - file_update_time(vmf->vma->vm_file); + vma_file_update_time(vmf->vma); lock_page(page); if (page->mapping != inode->i_mapping) { unlock_page(page); diff --git a/mm/memory.c b/mm/memory.c index 0e356dd923c..5aff0bf15b1 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -128,6 +128,25 @@ EXPORT_SYMBOL(zero_pfn); unsigned long highest_memmap_pfn __read_mostly; +#ifdef CONFIG_UKSM +unsigned long uksm_zero_pfn __read_mostly; +EXPORT_SYMBOL_GPL(uksm_zero_pfn); +struct page *empty_uksm_zero_page; + +static int __init setup_uksm_zero_page(void) +{ + empty_uksm_zero_page = alloc_pages(__GFP_ZERO & ~__GFP_MOVABLE, 0); + if (!empty_uksm_zero_page) + panic("Oh boy, that early out of memory?"); + + SetPageReserved(empty_uksm_zero_page); + uksm_zero_pfn = page_to_pfn(empty_uksm_zero_page); + + return 0; +} +core_initcall(setup_uksm_zero_page); +#endif + /* * CONFIG_MMU architectures set up ZERO_PAGE in their paging_init() */ @@ -139,6 +158,7 @@ static int __init init_zero_pfn(void) core_initcall(init_zero_pfn); + #if defined(SPLIT_RSS_COUNTING) void sync_mm_rss(struct mm_struct *mm) @@ -1035,6 +1055,9 @@ copy_one_pte(struct mm_struct *dst_mm, struct mm_struct *src_mm, get_page(page); page_dup_rmap(page, false); rss[mm_counter(page)]++; + + /* Should return NULL in vm_normal_page() */ + uksm_bugon_zeropage(pte); } else if (pte_devmap(pte)) { page = pte_page(pte); @@ -1048,6 +1071,8 @@ copy_one_pte(struct mm_struct *dst_mm, struct mm_struct *src_mm, page_dup_rmap(page, false); rss[mm_counter(page)]++; } + } else { + uksm_map_zero_page(pte); } out_set_pte: @@ -1317,8 +1342,10 @@ static unsigned long zap_pte_range(struct mmu_gather *tlb, ptent = ptep_get_and_clear_full(mm, addr, pte, tlb->fullmm); tlb_remove_tlb_entry(tlb, pte, addr); - if (unlikely(!page)) + if (unlikely(!page)) { + uksm_unmap_zero_page(ptent); continue; + } if (!PageAnon(page)) { if (pte_dirty(ptent)) { @@ -2360,8 +2387,10 @@ static inline void cow_user_page(struct page *dst, struct page *src, unsigned lo clear_page(kaddr); kunmap_atomic(kaddr); flush_dcache_page(dst); - } else + } else { copy_user_highpage(dst, src, va, vma); + uksm_cow_page(vma, src); + } } static gfp_t __get_fault_gfp_mask(struct vm_area_struct *vma) @@ -2510,6 +2539,7 @@ static int wp_page_copy(struct vm_fault *vmf) vmf->address); if (!new_page) goto oom; + uksm_cow_pte(vma, vmf->orig_pte); } else { new_page = alloc_page_vma(GFP_HIGHUSER_MOVABLE, vma, vmf->address); @@ -2536,7 +2566,9 @@ static int wp_page_copy(struct vm_fault *vmf) mm_counter_file(old_page)); inc_mm_counter_fast(mm, MM_ANONPAGES); } + uksm_bugon_zeropage(vmf->orig_pte); } else { + uksm_unmap_zero_page(vmf->orig_pte); inc_mm_counter_fast(mm, MM_ANONPAGES); } flush_cache_page(vma, vmf->address, pte_pfn(vmf->orig_pte)); diff --git a/mm/mmap.c b/mm/mmap.c index 17bbf4d3e24..54be99f2b73 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -45,6 +45,7 @@ #include #include #include +#include #include #include @@ -180,8 +181,9 @@ static struct vm_area_struct *remove_vma(struct vm_area_struct *vma) if (vma->vm_ops && vma->vm_ops->close) vma->vm_ops->close(vma); if (vma->vm_file) - fput(vma->vm_file); + vma_fput(vma); mpol_put(vma_policy(vma)); + uksm_remove_vma(vma); vm_area_free(vma); return next; } @@ -701,9 +703,16 @@ int __vma_adjust(struct vm_area_struct *vma, unsigned long start, long adjust_next = 0; int remove_next = 0; +/* + * to avoid deadlock, ksm_remove_vma must be done before any spin_lock is + * acquired + */ + uksm_remove_vma(vma); + if (next && !insert) { struct vm_area_struct *exporter = NULL, *importer = NULL; + uksm_remove_vma(next); if (end >= next->vm_end) { /* * vma expands, overlapping all the next, and @@ -836,6 +845,7 @@ int __vma_adjust(struct vm_area_struct *vma, unsigned long start, end_changed = true; } vma->vm_pgoff = pgoff; + if (adjust_next) { next->vm_start += adjust_next << PAGE_SHIFT; next->vm_pgoff += adjust_next; @@ -905,7 +915,7 @@ int __vma_adjust(struct vm_area_struct *vma, unsigned long start, if (remove_next) { if (file) { uprobe_munmap(next, next->vm_start, next->vm_end); - fput(file); + vma_fput(vma); } if (next->anon_vma) anon_vma_merge(vma, next); @@ -941,6 +951,7 @@ int __vma_adjust(struct vm_area_struct *vma, unsigned long start, if (remove_next == 2) { remove_next = 1; end = next->vm_end; + uksm_remove_vma(next); goto again; } else if (next) @@ -967,10 +978,14 @@ int __vma_adjust(struct vm_area_struct *vma, unsigned long start, */ VM_WARN_ON(mm->highest_vm_end != vm_end_gap(vma)); } + } else { + if (next && !insert) + uksm_vma_add_new(next); } if (insert && file) uprobe_mmap(insert); + uksm_vma_add_new(vma); validate_mm(mm); return 0; @@ -1427,6 +1442,9 @@ unsigned long do_mmap(struct file *file, unsigned long addr, vm_flags |= calc_vm_prot_bits(prot, pkey) | calc_vm_flag_bits(flags) | mm->def_flags | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC; + /* If uksm is enabled, we add VM_MERGEABLE to new VMAs. */ + uksm_vm_flags_mod(&vm_flags); + if (flags & MAP_LOCKED) if (!can_do_mlock()) return -EPERM; @@ -1791,6 +1809,7 @@ unsigned long mmap_region(struct file *file, unsigned long addr, allow_write_access(file); } file = vma->vm_file; + uksm_vma_add_new(vma); out: perf_event_mmap(vma); @@ -1820,8 +1839,8 @@ unsigned long mmap_region(struct file *file, unsigned long addr, return addr; unmap_and_free_vma: + vma_fput(vma); vma->vm_file = NULL; - fput(file); /* Undo any partial mapping done by a device driver. */ unmap_region(mm, vma, prev, vma->vm_start, vma->vm_end); @@ -1832,6 +1851,7 @@ unsigned long mmap_region(struct file *file, unsigned long addr, if (vm_flags & VM_DENYWRITE) allow_write_access(file); free_vma: + uksm_remove_vma(vma); vm_area_free(vma); unacct_error: if (charged) @@ -2640,7 +2660,7 @@ int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma, goto out_free_mpol; if (new->vm_file) - get_file(new->vm_file); + vma_get_file(new); if (new->vm_ops && new->vm_ops->open) new->vm_ops->open(new); @@ -2651,6 +2671,8 @@ int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma, else err = vma_adjust(vma, vma->vm_start, addr, vma->vm_pgoff, new); + uksm_vma_add_new(new); + /* Success. */ if (!err) return 0; @@ -2659,7 +2681,7 @@ int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma, if (new->vm_ops && new->vm_ops->close) new->vm_ops->close(new); if (new->vm_file) - fput(new->vm_file); + vma_fput(new); unlink_anon_vmas(new); out_free_mpol: mpol_put(vma_policy(new)); @@ -2821,7 +2843,7 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size, struct vm_area_struct *vma; unsigned long populate = 0; unsigned long ret = -EINVAL; - struct file *file; + struct file *file, *prfile; pr_warn_once("%s (%d) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.rst.\n", current->comm, current->pid); @@ -2896,10 +2918,27 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size, } } - file = get_file(vma->vm_file); + vma_get_file(vma); + file = vma->vm_file; + prfile = vma->vm_prfile; ret = do_mmap_pgoff(vma->vm_file, start, size, prot, flags, pgoff, &populate, NULL); + if (!IS_ERR_VALUE(ret) && file && prfile) { + struct vm_area_struct *new_vma; + + new_vma = find_vma(mm, ret); + if (!new_vma->vm_prfile) + new_vma->vm_prfile = prfile; + if (new_vma != vma) + get_file(prfile); + } + /* + * two fput()s instead of vma_fput(vma), + * coz vma may not be available anymore. + */ fput(file); + if (prfile) + fput(prfile); out: up_write(&mm->mmap_sem); if (populate) @@ -2936,6 +2975,7 @@ static int do_brk_flags(unsigned long addr, unsigned long len, unsigned long fla if ((flags & (~VM_EXEC)) != 0) return -EINVAL; flags |= VM_DATA_DEFAULT_FLAGS | VM_ACCOUNT | mm->def_flags; + uksm_vm_flags_mod(&flags); error = get_unmapped_area(NULL, addr, len, 0, MAP_FIXED); if (offset_in_page(error)) @@ -2992,6 +3032,7 @@ static int do_brk_flags(unsigned long addr, unsigned long len, unsigned long fla vma->vm_flags = flags; vma->vm_page_prot = vm_get_page_prot(flags); vma_link(mm, vma, prev, rb_link, rb_parent); + uksm_vma_add_new(vma); out: perf_event_mmap(vma); mm->total_vm += len >> PAGE_SHIFT; @@ -3071,6 +3112,12 @@ void exit_mmap(struct mm_struct *mm) up_write(&mm->mmap_sem); } + /* + * Taking write lock on mmap_sem does not harm others, + * but it's crucial for uksm to avoid races. + */ + down_write(&mm->mmap_sem); + if (mm->locked_vm) { vma = mm->mmap; while (vma) { @@ -3105,6 +3152,11 @@ void exit_mmap(struct mm_struct *mm) vma = remove_vma(vma); } vm_unacct_memory(nr_accounted); + + mm->mmap = NULL; + mm->mm_rb = RB_ROOT; + vmacache_invalidate(mm); + up_write(&mm->mmap_sem); } /* Insert vm structure into process list sorted by address @@ -3207,11 +3259,12 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap, if (anon_vma_clone(new_vma, vma)) goto out_free_mempol; if (new_vma->vm_file) - get_file(new_vma->vm_file); + vma_get_file(new_vma); if (new_vma->vm_ops && new_vma->vm_ops->open) new_vma->vm_ops->open(new_vma); vma_link(mm, new_vma, prev, rb_link, rb_parent); *need_rmap_locks = false; + uksm_vma_add_new(new_vma); } return new_vma; @@ -3362,6 +3415,7 @@ static struct vm_area_struct *__install_special_mapping( vm_stat_account(mm, vma->vm_flags, len >> PAGE_SHIFT); perf_event_mmap(vma); + uksm_vma_add_new(vma); return vma; diff --git a/mm/nommu.c b/mm/nommu.c index 9fc9e43335b..25d4c492cd2 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -629,7 +629,7 @@ static void __put_nommu_region(struct vm_region *region) up_write(&nommu_region_sem); if (region->vm_file) - fput(region->vm_file); + vmr_fput(region); /* IO memory and memory shared directly out of the pagecache * from ramfs/tmpfs mustn't be released here */ @@ -767,7 +767,7 @@ static void delete_vma(struct mm_struct *mm, struct vm_area_struct *vma) if (vma->vm_ops && vma->vm_ops->close) vma->vm_ops->close(vma); if (vma->vm_file) - fput(vma->vm_file); + vma_fput(vma); put_nommu_region(vma->vm_region); vm_area_free(vma); } @@ -1290,7 +1290,7 @@ unsigned long do_mmap(struct file *file, goto error_just_free; } } - fput(region->vm_file); + vmr_fput(region); kmem_cache_free(vm_region_jar, region); region = pregion; result = start; @@ -1365,7 +1365,7 @@ unsigned long do_mmap(struct file *file, up_write(&nommu_region_sem); error: if (region->vm_file) - fput(region->vm_file); + vmr_fput(region); kmem_cache_free(vm_region_jar, region); if (vma->vm_file) fput(vma->vm_file); diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 337c6afb334..8c6bcbe8d41 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -71,7 +71,11 @@ static long ratelimit_pages = 32; /* * Start background writeback (via writeback threads) at this percentage */ +#ifdef CONFIG_PCK_INTERACTIVE +int dirty_background_ratio = 20; +#else int dirty_background_ratio = 10; +#endif /* * dirty_background_bytes starts at 0 (disabled) so that it is a function of @@ -88,7 +92,11 @@ int vm_highmem_is_dirtyable; /* * The generator of dirty data starts writeback at this percentage */ +#ifdef CONFIG_PCK_INTERACTIVE +int vm_dirty_ratio = 50; +#else int vm_dirty_ratio = 20; +#endif /* * vm_dirty_bytes starts at 0 (disabled) so that it is a function of diff --git a/mm/prfile.c b/mm/prfile.c new file mode 100644 index 00000000000..a27ac3688a3 --- /dev/null +++ b/mm/prfile.c @@ -0,0 +1,86 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Mainly for aufs which mmap(2) different file and wants to print different + * path in /proc/PID/maps. + * Call these functions via macros defined in linux/mm.h. + * + * See Documentation/filesystems/aufs/design/06mmap.txt + * + * Copyright (c) 2014-2018 Junjro R. Okajima + * Copyright (c) 2014 Ian Campbell + */ + +#include +#include +#include + +/* #define PRFILE_TRACE */ +static inline void prfile_trace(struct file *f, struct file *pr, + const char func[], int line, const char func2[]) +{ +#ifdef PRFILE_TRACE + if (pr) + pr_info("%s:%d: %s, %pD2\n", func, line, func2, f); +#endif +} + +void vma_do_file_update_time(struct vm_area_struct *vma, const char func[], + int line) +{ + struct file *f = vma->vm_file, *pr = vma->vm_prfile; + + prfile_trace(f, pr, func, line, __func__); + file_update_time(f); + if (f && pr) + file_update_time(pr); +} + +struct file *vma_do_pr_or_file(struct vm_area_struct *vma, const char func[], + int line) +{ + struct file *f = vma->vm_file, *pr = vma->vm_prfile; + + prfile_trace(f, pr, func, line, __func__); + return (f && pr) ? pr : f; +} + +void vma_do_get_file(struct vm_area_struct *vma, const char func[], int line) +{ + struct file *f = vma->vm_file, *pr = vma->vm_prfile; + + prfile_trace(f, pr, func, line, __func__); + get_file(f); + if (f && pr) + get_file(pr); +} + +void vma_do_fput(struct vm_area_struct *vma, const char func[], int line) +{ + struct file *f = vma->vm_file, *pr = vma->vm_prfile; + + prfile_trace(f, pr, func, line, __func__); + fput(f); + if (f && pr) + fput(pr); +} + +#ifndef CONFIG_MMU +struct file *vmr_do_pr_or_file(struct vm_region *region, const char func[], + int line) +{ + struct file *f = region->vm_file, *pr = region->vm_prfile; + + prfile_trace(f, pr, func, line, __func__); + return (f && pr) ? pr : f; +} + +void vmr_do_fput(struct vm_region *region, const char func[], int line) +{ + struct file *f = region->vm_file, *pr = region->vm_prfile; + + prfile_trace(f, pr, func, line, __func__); + fput(f); + if (f && pr) + fput(pr); +} +#endif /* !CONFIG_MMU */ diff --git a/mm/rmap.c b/mm/rmap.c index eb477809a5c..4b2c4f5e1f7 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -1017,9 +1017,9 @@ void page_move_anon_rmap(struct page *page, struct vm_area_struct *vma) /** * __page_set_anon_rmap - set up new anonymous rmap - * @page: Page to add to rmap + * @page: Page to add to rmap * @vma: VM area to add page to. - * @address: User virtual address of the mapping + * @address: User virtual address of the mapping * @exclusive: the page is exclusively owned by the current process */ static void __page_set_anon_rmap(struct page *page, diff --git a/mm/uksm.c b/mm/uksm.c new file mode 100644 index 00000000000..e67007cc35b --- /dev/null +++ b/mm/uksm.c @@ -0,0 +1,5596 @@ +/* + * Ultra KSM. Copyright (C) 2011-2012 Nai Xia + * + * This is an improvement upon KSM. Some basic data structures and routines + * are borrowed from ksm.c . + * + * Its new features: + * 1. Full system scan: + * It automatically scans all user processes' anonymous VMAs. Kernel-user + * interaction to submit a memory area to KSM is no longer needed. + * + * 2. Rich area detection: + * It automatically detects rich areas containing abundant duplicated + * pages based. Rich areas are given a full scan speed. Poor areas are + * sampled at a reasonable speed with very low CPU consumption. + * + * 3. Ultra Per-page scan speed improvement: + * A new hash algorithm is proposed. As a result, on a machine with + * Core(TM)2 Quad Q9300 CPU in 32-bit mode and 800MHZ DDR2 main memory, it + * can scan memory areas that does not contain duplicated pages at speed of + * 627MB/sec ~ 2445MB/sec and can merge duplicated areas at speed of + * 477MB/sec ~ 923MB/sec. + * + * 4. Thrashing area avoidance: + * Thrashing area(an VMA that has frequent Ksm page break-out) can be + * filtered out. My benchmark shows it's more efficient than KSM's per-page + * hash value based volatile page detection. + * + * + * 5. Misc changes upon KSM: + * * It has a fully x86-opitmized memcmp dedicated for 4-byte-aligned page + * comparison. It's much faster than default C version on x86. + * * rmap_item now has an struct *page member to loosely cache a + * address-->page mapping, which reduces too much time-costly + * follow_page(). + * * The VMA creation/exit procedures are hooked to let the Ultra KSM know. + * * try_to_merge_two_pages() now can revert a pte if it fails. No break_ + * ksm is needed for this case. + * + * 6. Full Zero Page consideration(contributed by Figo Zhang) + * Now uksmd consider full zero pages as special pages and merge them to an + * special unswappable uksm zero page. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include "internal.h" + + +static inline struct stable_node *page_stable_node(struct page *page) +{ + return PageKsm(page) ? page_rmapping(page) : NULL; +} + +static inline void set_page_stable_node(struct page *page, + struct stable_node *stable_node) +{ + page->mapping = (void *)((unsigned long)stable_node | PAGE_MAPPING_KSM); +} + +#ifdef CONFIG_X86 +#undef memcmp + +#ifdef CONFIG_X86_32 +#define memcmp memcmpx86_32 +/* + * Compare 4-byte-aligned address s1 and s2, with length n + */ +int memcmpx86_32(void *s1, void *s2, size_t n) +{ + size_t num = n / 4; + register int res; + + __asm__ __volatile__ + ( + "testl %3,%3\n\t" + "repe; cmpsd\n\t" + "je 1f\n\t" + "sbbl %0,%0\n\t" + "orl $1,%0\n" + "1:" + : "=&a" (res), "+&S" (s1), "+&D" (s2), "+&c" (num) + : "0" (0) + : "cc"); + + return res; +} + +/* + * Check the page is all zero ? + */ +static int is_full_zero(const void *s1, size_t len) +{ + unsigned char same; + + len /= 4; + + __asm__ __volatile__ + ("repe; scasl;" + "sete %0" + : "=qm" (same), "+D" (s1), "+c" (len) + : "a" (0) + : "cc"); + + return same; +} + + +#elif defined(CONFIG_X86_64) +#define memcmp memcmpx86_64 +/* + * Compare 8-byte-aligned address s1 and s2, with length n + */ +int memcmpx86_64(void *s1, void *s2, size_t n) +{ + size_t num = n / 8; + register int res; + + __asm__ __volatile__ + ( + "testq %q3,%q3\n\t" + "repe; cmpsq\n\t" + "je 1f\n\t" + "sbbq %q0,%q0\n\t" + "orq $1,%q0\n" + "1:" + : "=&a" (res), "+&S" (s1), "+&D" (s2), "+&c" (num) + : "0" (0) + : "cc"); + + return res; +} + +static int is_full_zero(const void *s1, size_t len) +{ + unsigned char same; + + len /= 8; + + __asm__ __volatile__ + ("repe; scasq;" + "sete %0" + : "=qm" (same), "+D" (s1), "+c" (len) + : "a" (0) + : "cc"); + + return same; +} + +#endif +#else +static int is_full_zero(const void *s1, size_t len) +{ + unsigned long *src = s1; + int i; + + len /= sizeof(*src); + + for (i = 0; i < len; i++) { + if (src[i]) + return 0; + } + + return 1; +} +#endif + +#define UKSM_RUNG_ROUND_FINISHED (1 << 0) +#define TIME_RATIO_SCALE 10000 + +#define SLOT_TREE_NODE_SHIFT 8 +#define SLOT_TREE_NODE_STORE_SIZE (1UL << SLOT_TREE_NODE_SHIFT) +struct slot_tree_node { + unsigned long size; + struct sradix_tree_node snode; + void *stores[SLOT_TREE_NODE_STORE_SIZE]; +}; + +static struct kmem_cache *slot_tree_node_cachep; + +static struct sradix_tree_node *slot_tree_node_alloc(void) +{ + struct slot_tree_node *p; + + p = kmem_cache_zalloc(slot_tree_node_cachep, GFP_KERNEL | + __GFP_NORETRY | __GFP_NOWARN); + if (!p) + return NULL; + + return &p->snode; +} + +static void slot_tree_node_free(struct sradix_tree_node *node) +{ + struct slot_tree_node *p; + + p = container_of(node, struct slot_tree_node, snode); + kmem_cache_free(slot_tree_node_cachep, p); +} + +static void slot_tree_node_extend(struct sradix_tree_node *parent, + struct sradix_tree_node *child) +{ + struct slot_tree_node *p, *c; + + p = container_of(parent, struct slot_tree_node, snode); + c = container_of(child, struct slot_tree_node, snode); + + p->size += c->size; +} + +void slot_tree_node_assign(struct sradix_tree_node *node, + unsigned int index, void *item) +{ + struct vma_slot *slot = item; + struct slot_tree_node *cur; + + slot->snode = node; + slot->sindex = index; + + while (node) { + cur = container_of(node, struct slot_tree_node, snode); + cur->size += slot->pages; + node = node->parent; + } +} + +void slot_tree_node_rm(struct sradix_tree_node *node, unsigned int offset) +{ + struct vma_slot *slot; + struct slot_tree_node *cur; + unsigned long pages; + + if (node->height == 1) { + slot = node->stores[offset]; + pages = slot->pages; + } else { + cur = container_of(node->stores[offset], + struct slot_tree_node, snode); + pages = cur->size; + } + + while (node) { + cur = container_of(node, struct slot_tree_node, snode); + cur->size -= pages; + node = node->parent; + } +} + +unsigned long slot_iter_index; +int slot_iter(void *item, unsigned long height) +{ + struct slot_tree_node *node; + struct vma_slot *slot; + + if (height == 1) { + slot = item; + if (slot_iter_index < slot->pages) { + /*in this one*/ + return 1; + } else { + slot_iter_index -= slot->pages; + return 0; + } + + } else { + node = container_of(item, struct slot_tree_node, snode); + if (slot_iter_index < node->size) { + /*in this one*/ + return 1; + } else { + slot_iter_index -= node->size; + return 0; + } + } +} + + +static inline void slot_tree_init_root(struct sradix_tree_root *root) +{ + init_sradix_tree_root(root, SLOT_TREE_NODE_SHIFT); + root->alloc = slot_tree_node_alloc; + root->free = slot_tree_node_free; + root->extend = slot_tree_node_extend; + root->assign = slot_tree_node_assign; + root->rm = slot_tree_node_rm; +} + +void slot_tree_init(void) +{ + slot_tree_node_cachep = kmem_cache_create("slot_tree_node", + sizeof(struct slot_tree_node), 0, + SLAB_PANIC | SLAB_RECLAIM_ACCOUNT, + NULL); +} + + +/* Each rung of this ladder is a list of VMAs having a same scan ratio */ +struct scan_rung { + //struct list_head scanned_list; + struct sradix_tree_root vma_root; + struct sradix_tree_root vma_root2; + + struct vma_slot *current_scan; + unsigned long current_offset; + + /* + * The initial value for current_offset, it should loop over + * [0~ step - 1] to let all slot have its chance to be scanned. + */ + unsigned long offset_init; + unsigned long step; /* dynamic step for current_offset */ + unsigned int flags; + unsigned long pages_to_scan; + //unsigned long fully_scanned_slots; + /* + * a little bit tricky - if cpu_time_ratio > 0, then the value is the + * the cpu time ratio it can spend in rung_i for every scan + * period. if < 0, then it is the cpu time ratio relative to the + * max cpu percentage user specified. Both in unit of + * 1/TIME_RATIO_SCALE + */ + int cpu_ratio; + + /* + * How long it will take for all slots in this rung to be fully + * scanned? If it's zero, we don't care about the cover time: + * it's fully scanned. + */ + unsigned int cover_msecs; + //unsigned long vma_num; + //unsigned long pages; /* Sum of all slot's pages in rung */ +}; + +/** + * node of either the stable or unstale rbtree + * + */ +struct tree_node { + struct rb_node node; /* link in the main (un)stable rbtree */ + struct rb_root sub_root; /* rb_root for sublevel collision rbtree */ + u32 hash; + unsigned long count; /* TODO: merged with sub_root */ + struct list_head all_list; /* all tree nodes in stable/unstable tree */ +}; + +/** + * struct stable_node - node of the stable rbtree + * @node: rb node of this ksm page in the stable tree + * @hlist: hlist head of rmap_items using this ksm page + * @kpfn: page frame number of this ksm page + */ +struct stable_node { + struct rb_node node; /* link in sub-rbtree */ + struct tree_node *tree_node; /* it's tree node root in stable tree, NULL if it's in hell list */ + struct hlist_head hlist; + unsigned long kpfn; + u32 hash_max; /* if ==0 then it's not been calculated yet */ + struct list_head all_list; /* in a list for all stable nodes */ +}; + +/** + * struct node_vma - group rmap_items linked in a same stable + * node together. + */ +struct node_vma { + union { + struct vma_slot *slot; + unsigned long key; /* slot is used as key sorted on hlist */ + }; + struct hlist_node hlist; + struct hlist_head rmap_hlist; + struct stable_node *head; +}; + +/** + * struct rmap_item - reverse mapping item for virtual addresses + * @rmap_list: next rmap_item in mm_slot's singly-linked rmap_list + * @anon_vma: pointer to anon_vma for this mm,address, when in stable tree + * @mm: the memory structure this rmap_item is pointing into + * @address: the virtual address this rmap_item tracks (+ flags in low bits) + * @node: rb node of this rmap_item in the unstable tree + * @head: pointer to stable_node heading this list in the stable tree + * @hlist: link into hlist of rmap_items hanging off that stable_node + */ +struct rmap_item { + struct vma_slot *slot; + struct page *page; + unsigned long address; /* + low bits used for flags below */ + unsigned long hash_round; + unsigned long entry_index; + union { + struct {/* when in unstable tree */ + struct rb_node node; + struct tree_node *tree_node; + u32 hash_max; + }; + struct { /* when in stable tree */ + struct node_vma *head; + struct hlist_node hlist; + struct anon_vma *anon_vma; + }; + }; +} __aligned(4); + +struct rmap_list_entry { + union { + struct rmap_item *item; + unsigned long addr; + }; + /* lowest bit is used for is_addr tag */ +} __aligned(4); /* 4 aligned to fit in to pages*/ + + +/* Basic data structure definition ends */ + + +/* + * Flags for rmap_item to judge if it's listed in the stable/unstable tree. + * The flags use the low bits of rmap_item.address + */ +#define UNSTABLE_FLAG 0x1 +#define STABLE_FLAG 0x2 +#define get_rmap_addr(x) ((x)->address & PAGE_MASK) + +/* + * rmap_list_entry helpers + */ +#define IS_ADDR_FLAG 1 +#define is_addr(ptr) ((unsigned long)(ptr) & IS_ADDR_FLAG) +#define set_is_addr(ptr) ((ptr) |= IS_ADDR_FLAG) +#define get_clean_addr(ptr) (((ptr) & ~(__typeof__(ptr))IS_ADDR_FLAG)) + + +/* + * High speed caches for frequently allocated and freed structs + */ +static struct kmem_cache *rmap_item_cache; +static struct kmem_cache *stable_node_cache; +static struct kmem_cache *node_vma_cache; +static struct kmem_cache *vma_slot_cache; +static struct kmem_cache *tree_node_cache; +#define UKSM_KMEM_CACHE(__struct, __flags) kmem_cache_create("uksm_"#__struct,\ + sizeof(struct __struct), __alignof__(struct __struct),\ + (__flags), NULL) + +/* Array of all scan_rung, uksm_scan_ladder[0] having the minimum scan ratio */ +#define SCAN_LADDER_SIZE 4 +static struct scan_rung uksm_scan_ladder[SCAN_LADDER_SIZE]; + +/* The evaluation rounds uksmd has finished */ +static unsigned long long uksm_eval_round = 1; + +/* + * we add 1 to this var when we consider we should rebuild the whole + * unstable tree. + */ +static unsigned long uksm_hash_round = 1; + +/* + * How many times the whole memory is scanned. + */ +static unsigned long long fully_scanned_round = 1; + +/* The total number of virtual pages of all vma slots */ +static u64 uksm_pages_total; + +/* The number of pages has been scanned since the start up */ +static u64 uksm_pages_scanned; + +static u64 scanned_virtual_pages; + +/* The number of pages has been scanned since last encode_benefit call */ +static u64 uksm_pages_scanned_last; + +/* If the scanned number is tooo large, we encode it here */ +static u64 pages_scanned_stored; + +static unsigned long pages_scanned_base; + +/* The number of nodes in the stable tree */ +static unsigned long uksm_pages_shared; + +/* The number of page slots additionally sharing those nodes */ +static unsigned long uksm_pages_sharing; + +/* The number of nodes in the unstable tree */ +static unsigned long uksm_pages_unshared; + +/* + * Milliseconds ksmd should sleep between scans, + * >= 100ms to be consistent with + * scan_time_to_sleep_msec() + */ +static unsigned int uksm_sleep_jiffies; + +/* The real value for the uksmd next sleep */ +static unsigned int uksm_sleep_real; + +/* Saved value for user input uksm_sleep_jiffies when it's enlarged */ +static unsigned int uksm_sleep_saved; + +/* Max percentage of cpu utilization ksmd can take to scan in one batch */ +static unsigned int uksm_max_cpu_percentage; + +static int uksm_cpu_governor; + +static char *uksm_cpu_governor_str[4] = { "full", "medium", "low", "quiet" }; + +struct uksm_cpu_preset_s { + int cpu_ratio[SCAN_LADDER_SIZE]; + unsigned int cover_msecs[SCAN_LADDER_SIZE]; + unsigned int max_cpu; /* percentage */ +}; + +struct uksm_cpu_preset_s uksm_cpu_preset[4] = { + { {20, 40, -2500, -10000}, {1000, 500, 200, 50}, 95}, + { {20, 30, -2500, -10000}, {1000, 500, 400, 100}, 50}, + { {10, 20, -5000, -10000}, {1500, 1000, 1000, 250}, 20}, + { {10, 20, 40, 75}, {2000, 1000, 1000, 1000}, 1}, +}; + +/* The default value for uksm_ema_page_time if it's not initialized */ +#define UKSM_PAGE_TIME_DEFAULT 500 + +/*cost to scan one page by expotional moving average in nsecs */ +static unsigned long uksm_ema_page_time = UKSM_PAGE_TIME_DEFAULT; + +/* The expotional moving average alpha weight, in percentage. */ +#define EMA_ALPHA 20 + +/* + * The threshold used to filter out thrashing areas, + * If it == 0, filtering is disabled, otherwise it's the percentage up-bound + * of the thrashing ratio of all areas. Any area with a bigger thrashing ratio + * will be considered as having a zero duplication ratio. + */ +static unsigned int uksm_thrash_threshold = 50; + +/* How much dedup ratio is considered to be abundant*/ +static unsigned int uksm_abundant_threshold = 10; + +/* All slots having merged pages in this eval round. */ +struct list_head vma_slot_dedup = LIST_HEAD_INIT(vma_slot_dedup); + +/* How many times the ksmd has slept since startup */ +static unsigned long long uksm_sleep_times; + +#define UKSM_RUN_STOP 0 +#define UKSM_RUN_MERGE 1 +static unsigned int uksm_run = 1; + +static DECLARE_WAIT_QUEUE_HEAD(uksm_thread_wait); +static DEFINE_MUTEX(uksm_thread_mutex); + +/* + * List vma_slot_new is for newly created vma_slot waiting to be added by + * ksmd. If one cannot be added(e.g. due to it's too small), it's moved to + * vma_slot_noadd. vma_slot_del is the list for vma_slot whose corresponding + * VMA has been removed/freed. + */ +struct list_head vma_slot_new = LIST_HEAD_INIT(vma_slot_new); +struct list_head vma_slot_noadd = LIST_HEAD_INIT(vma_slot_noadd); +struct list_head vma_slot_del = LIST_HEAD_INIT(vma_slot_del); +static DEFINE_SPINLOCK(vma_slot_list_lock); + +/* The unstable tree heads */ +static struct rb_root root_unstable_tree = RB_ROOT; + +/* + * All tree_nodes are in a list to be freed at once when unstable tree is + * freed after each scan round. + */ +static struct list_head unstable_tree_node_list = + LIST_HEAD_INIT(unstable_tree_node_list); + +/* List contains all stable nodes */ +static struct list_head stable_node_list = LIST_HEAD_INIT(stable_node_list); + +/* + * When the hash strength is changed, the stable tree must be delta_hashed and + * re-structured. We use two set of below structs to speed up the + * re-structuring of stable tree. + */ +static struct list_head +stable_tree_node_list[2] = {LIST_HEAD_INIT(stable_tree_node_list[0]), + LIST_HEAD_INIT(stable_tree_node_list[1])}; + +static struct list_head *stable_tree_node_listp = &stable_tree_node_list[0]; +static struct rb_root root_stable_tree[2] = {RB_ROOT, RB_ROOT}; +static struct rb_root *root_stable_treep = &root_stable_tree[0]; +static unsigned long stable_tree_index; + +/* The hash strength needed to hash a full page */ +#define HASH_STRENGTH_FULL (PAGE_SIZE / sizeof(u32)) + +/* The hash strength needed for loop-back hashing */ +#define HASH_STRENGTH_MAX (HASH_STRENGTH_FULL + 10) + +/* The random offsets in a page */ +static u32 *random_nums; + +/* The hash strength */ +static unsigned long hash_strength = HASH_STRENGTH_FULL >> 4; + +/* The delta value each time the hash strength increases or decreases */ +static unsigned long hash_strength_delta; +#define HASH_STRENGTH_DELTA_MAX 5 + +/* The time we have saved due to random_sample_hash */ +static u64 rshash_pos; + +/* The time we have wasted due to hash collision */ +static u64 rshash_neg; + +struct uksm_benefit { + u64 pos; + u64 neg; + u64 scanned; + unsigned long base; +} benefit; + +/* + * The relative cost of memcmp, compared to 1 time unit of random sample + * hash, this value is tested when ksm module is initialized + */ +static unsigned long memcmp_cost; + +static unsigned long rshash_neg_cont_zero; +static unsigned long rshash_cont_obscure; + +/* The possible states of hash strength adjustment heuristic */ +enum rshash_states { + RSHASH_STILL, + RSHASH_TRYUP, + RSHASH_TRYDOWN, + RSHASH_NEW, + RSHASH_PRE_STILL, +}; + +/* The possible direction we are about to adjust hash strength */ +enum rshash_direct { + GO_UP, + GO_DOWN, + OBSCURE, + STILL, +}; + +/* random sampling hash state machine */ +static struct { + enum rshash_states state; + enum rshash_direct pre_direct; + u8 below_count; + /* Keep a lookup window of size 5, iff above_count/below_count > 3 + * in this window we stop trying. + */ + u8 lookup_window_index; + u64 stable_benefit; + unsigned long turn_point_down; + unsigned long turn_benefit_down; + unsigned long turn_point_up; + unsigned long turn_benefit_up; + unsigned long stable_point; +} rshash_state; + +/*zero page hash table, hash_strength [0 ~ HASH_STRENGTH_MAX]*/ +static u32 *zero_hash_table; + +static inline struct node_vma *alloc_node_vma(void) +{ + struct node_vma *node_vma; + + node_vma = kmem_cache_zalloc(node_vma_cache, GFP_KERNEL | + __GFP_NORETRY | __GFP_NOWARN); + if (node_vma) { + INIT_HLIST_HEAD(&node_vma->rmap_hlist); + INIT_HLIST_NODE(&node_vma->hlist); + } + return node_vma; +} + +static inline void free_node_vma(struct node_vma *node_vma) +{ + kmem_cache_free(node_vma_cache, node_vma); +} + + +static inline struct vma_slot *alloc_vma_slot(void) +{ + struct vma_slot *slot; + + /* + * In case ksm is not initialized by now. + * Oops, we need to consider the call site of uksm_init() in the future. + */ + if (!vma_slot_cache) + return NULL; + + slot = kmem_cache_zalloc(vma_slot_cache, GFP_KERNEL | + __GFP_NORETRY | __GFP_NOWARN); + if (slot) { + INIT_LIST_HEAD(&slot->slot_list); + INIT_LIST_HEAD(&slot->dedup_list); + slot->flags |= UKSM_SLOT_NEED_RERAND; + } + return slot; +} + +static inline void free_vma_slot(struct vma_slot *vma_slot) +{ + kmem_cache_free(vma_slot_cache, vma_slot); +} + + + +static inline struct rmap_item *alloc_rmap_item(void) +{ + struct rmap_item *rmap_item; + + rmap_item = kmem_cache_zalloc(rmap_item_cache, GFP_KERNEL | + __GFP_NORETRY | __GFP_NOWARN); + if (rmap_item) { + /* bug on lowest bit is not clear for flag use */ + BUG_ON(is_addr(rmap_item)); + } + return rmap_item; +} + +static inline void free_rmap_item(struct rmap_item *rmap_item) +{ + rmap_item->slot = NULL; /* debug safety */ + kmem_cache_free(rmap_item_cache, rmap_item); +} + +static inline struct stable_node *alloc_stable_node(void) +{ + struct stable_node *node; + + node = kmem_cache_alloc(stable_node_cache, GFP_KERNEL | + __GFP_NORETRY | __GFP_NOWARN); + if (!node) + return NULL; + + INIT_HLIST_HEAD(&node->hlist); + list_add(&node->all_list, &stable_node_list); + return node; +} + +static inline void free_stable_node(struct stable_node *stable_node) +{ + list_del(&stable_node->all_list); + kmem_cache_free(stable_node_cache, stable_node); +} + +static inline struct tree_node *alloc_tree_node(struct list_head *list) +{ + struct tree_node *node; + + node = kmem_cache_zalloc(tree_node_cache, GFP_KERNEL | + __GFP_NORETRY | __GFP_NOWARN); + if (!node) + return NULL; + + list_add(&node->all_list, list); + return node; +} + +static inline void free_tree_node(struct tree_node *node) +{ + list_del(&node->all_list); + kmem_cache_free(tree_node_cache, node); +} + +static void uksm_drop_anon_vma(struct rmap_item *rmap_item) +{ + struct anon_vma *anon_vma = rmap_item->anon_vma; + + put_anon_vma(anon_vma); +} + + +/** + * Remove a stable node from stable_tree, may unlink from its tree_node and + * may remove its parent tree_node if no other stable node is pending. + * + * @stable_node The node need to be removed + * @unlink_rb Will this node be unlinked from the rbtree? + * @remove_tree_ node Will its tree_node be removed if empty? + */ +static void remove_node_from_stable_tree(struct stable_node *stable_node, + int unlink_rb, int remove_tree_node) +{ + struct node_vma *node_vma; + struct rmap_item *rmap_item; + struct hlist_node *n; + + if (!hlist_empty(&stable_node->hlist)) { + hlist_for_each_entry_safe(node_vma, n, + &stable_node->hlist, hlist) { + hlist_for_each_entry(rmap_item, &node_vma->rmap_hlist, hlist) { + uksm_pages_sharing--; + + uksm_drop_anon_vma(rmap_item); + rmap_item->address &= PAGE_MASK; + } + free_node_vma(node_vma); + cond_resched(); + } + + /* the last one is counted as shared */ + uksm_pages_shared--; + uksm_pages_sharing++; + } + + if (stable_node->tree_node && unlink_rb) { + rb_erase(&stable_node->node, + &stable_node->tree_node->sub_root); + + if (RB_EMPTY_ROOT(&stable_node->tree_node->sub_root) && + remove_tree_node) { + rb_erase(&stable_node->tree_node->node, + root_stable_treep); + free_tree_node(stable_node->tree_node); + } else { + stable_node->tree_node->count--; + } + } + + free_stable_node(stable_node); +} + + +/* + * get_uksm_page: checks if the page indicated by the stable node + * is still its ksm page, despite having held no reference to it. + * In which case we can trust the content of the page, and it + * returns the gotten page; but if the page has now been zapped, + * remove the stale node from the stable tree and return NULL. + * + * You would expect the stable_node to hold a reference to the ksm page. + * But if it increments the page's count, swapping out has to wait for + * ksmd to come around again before it can free the page, which may take + * seconds or even minutes: much too unresponsive. So instead we use a + * "keyhole reference": access to the ksm page from the stable node peeps + * out through its keyhole to see if that page still holds the right key, + * pointing back to this stable node. This relies on freeing a PageAnon + * page to reset its page->mapping to NULL, and relies on no other use of + * a page to put something that might look like our key in page->mapping. + * + * include/linux/pagemap.h page_cache_get_speculative() is a good reference, + * but this is different - made simpler by uksm_thread_mutex being held, but + * interesting for assuming that no other use of the struct page could ever + * put our expected_mapping into page->mapping (or a field of the union which + * coincides with page->mapping). The RCU calls are not for KSM at all, but + * to keep the page_count protocol described with page_cache_get_speculative. + * + * Note: it is possible that get_uksm_page() will return NULL one moment, + * then page the next, if the page is in between page_freeze_refs() and + * page_unfreeze_refs(): this shouldn't be a problem anywhere, the page + * is on its way to being freed; but it is an anomaly to bear in mind. + * + * @unlink_rb: if the removal of this node will firstly unlink from + * its rbtree. stable_node_reinsert will prevent this when restructuring the + * node from its old tree. + * + * @remove_tree_node: if this is the last one of its tree_node, will the + * tree_node be freed ? If we are inserting stable node, this tree_node may + * be reused, so don't free it. + */ +static struct page *get_uksm_page(struct stable_node *stable_node, + int unlink_rb, int remove_tree_node) +{ + struct page *page; + void *expected_mapping; + unsigned long kpfn; + + expected_mapping = (void *)((unsigned long)stable_node | + PAGE_MAPPING_KSM); +again: + kpfn = READ_ONCE(stable_node->kpfn); + page = pfn_to_page(kpfn); + + /* + * page is computed from kpfn, so on most architectures reading + * page->mapping is naturally ordered after reading node->kpfn, + * but on Alpha we need to be more careful. + */ + smp_read_barrier_depends(); + + if (READ_ONCE(page->mapping) != expected_mapping) + goto stale; + + /* + * We cannot do anything with the page while its refcount is 0. + * Usually 0 means free, or tail of a higher-order page: in which + * case this node is no longer referenced, and should be freed; + * however, it might mean that the page is under page_freeze_refs(). + * The __remove_mapping() case is easy, again the node is now stale; + * but if page is swapcache in migrate_page_move_mapping(), it might + * still be our page, in which case it's essential to keep the node. + */ + while (!get_page_unless_zero(page)) { + /* + * Another check for page->mapping != expected_mapping would + * work here too. We have chosen the !PageSwapCache test to + * optimize the common case, when the page is or is about to + * be freed: PageSwapCache is cleared (under spin_lock_irq) + * in the freeze_refs section of __remove_mapping(); but Anon + * page->mapping reset to NULL later, in free_pages_prepare(). + */ + if (!PageSwapCache(page)) + goto stale; + cpu_relax(); + } + + if (READ_ONCE(page->mapping) != expected_mapping) { + put_page(page); + goto stale; + } + + lock_page(page); + if (READ_ONCE(page->mapping) != expected_mapping) { + unlock_page(page); + put_page(page); + goto stale; + } + unlock_page(page); + return page; +stale: + /* + * We come here from above when page->mapping or !PageSwapCache + * suggests that the node is stale; but it might be under migration. + * We need smp_rmb(), matching the smp_wmb() in ksm_migrate_page(), + * before checking whether node->kpfn has been changed. + */ + smp_rmb(); + if (stable_node->kpfn != kpfn) + goto again; + + remove_node_from_stable_tree(stable_node, unlink_rb, remove_tree_node); + + return NULL; +} + +/* + * Removing rmap_item from stable or unstable tree. + * This function will clean the information from the stable/unstable tree. + */ +static inline void remove_rmap_item_from_tree(struct rmap_item *rmap_item) +{ + if (rmap_item->address & STABLE_FLAG) { + struct stable_node *stable_node; + struct node_vma *node_vma; + struct page *page; + + node_vma = rmap_item->head; + stable_node = node_vma->head; + page = get_uksm_page(stable_node, 1, 1); + if (!page) + goto out; + + /* + * page lock is needed because it's racing with + * try_to_unmap_ksm(), etc. + */ + lock_page(page); + hlist_del(&rmap_item->hlist); + + if (hlist_empty(&node_vma->rmap_hlist)) { + hlist_del(&node_vma->hlist); + free_node_vma(node_vma); + } + unlock_page(page); + + put_page(page); + if (hlist_empty(&stable_node->hlist)) { + /* do NOT call remove_node_from_stable_tree() here, + * it's possible for a forked rmap_item not in + * stable tree while the in-tree rmap_items were + * deleted. + */ + uksm_pages_shared--; + } else + uksm_pages_sharing--; + + + uksm_drop_anon_vma(rmap_item); + } else if (rmap_item->address & UNSTABLE_FLAG) { + if (rmap_item->hash_round == uksm_hash_round) { + + rb_erase(&rmap_item->node, + &rmap_item->tree_node->sub_root); + if (RB_EMPTY_ROOT(&rmap_item->tree_node->sub_root)) { + rb_erase(&rmap_item->tree_node->node, + &root_unstable_tree); + + free_tree_node(rmap_item->tree_node); + } else + rmap_item->tree_node->count--; + } + uksm_pages_unshared--; + } + + rmap_item->address &= PAGE_MASK; + rmap_item->hash_max = 0; + +out: + cond_resched(); /* we're called from many long loops */ +} + +static inline int slot_in_uksm(struct vma_slot *slot) +{ + return list_empty(&slot->slot_list); +} + +/* + * Test if the mm is exiting + */ +static inline bool uksm_test_exit(struct mm_struct *mm) +{ + return atomic_read(&mm->mm_users) == 0; +} + +static inline unsigned long vma_pool_size(struct vma_slot *slot) +{ + return round_up(sizeof(struct rmap_list_entry) * slot->pages, + PAGE_SIZE) >> PAGE_SHIFT; +} + +#define CAN_OVERFLOW_U64(x, delta) (U64_MAX - (x) < (delta)) + +/* must be done with sem locked */ +static int slot_pool_alloc(struct vma_slot *slot) +{ + unsigned long pool_size; + + if (slot->rmap_list_pool) + return 0; + + pool_size = vma_pool_size(slot); + slot->rmap_list_pool = kcalloc(pool_size, sizeof(struct page *), + GFP_KERNEL); + if (!slot->rmap_list_pool) + return -ENOMEM; + + slot->pool_counts = kcalloc(pool_size, sizeof(unsigned int), + GFP_KERNEL); + if (!slot->pool_counts) { + kfree(slot->rmap_list_pool); + return -ENOMEM; + } + + slot->pool_size = pool_size; + BUG_ON(CAN_OVERFLOW_U64(uksm_pages_total, slot->pages)); + slot->flags |= UKSM_SLOT_IN_UKSM; + uksm_pages_total += slot->pages; + + return 0; +} + +/* + * Called after vma is unlinked from its mm + */ +void uksm_remove_vma(struct vm_area_struct *vma) +{ + struct vma_slot *slot; + + if (!vma->uksm_vma_slot) + return; + + spin_lock(&vma_slot_list_lock); + slot = vma->uksm_vma_slot; + if (!slot) + goto out; + + if (slot_in_uksm(slot)) { + /** + * This slot has been added by ksmd, so move to the del list + * waiting ksmd to free it. + */ + list_add_tail(&slot->slot_list, &vma_slot_del); + } else { + /** + * It's still on new list. It's ok to free slot directly. + */ + list_del(&slot->slot_list); + free_vma_slot(slot); + } +out: + vma->uksm_vma_slot = NULL; + spin_unlock(&vma_slot_list_lock); +} + +/** + * Need to do two things: + * 1. check if slot was moved to del list + * 2. make sure the mmap_sem is manipulated under valid vma. + * + * My concern here is that in some cases, this may make + * vma_slot_list_lock() waiters to serialized further by some + * sem->wait_lock, can this really be expensive? + * + * + * @return + * 0: if successfully locked mmap_sem + * -ENOENT: this slot was moved to del list + * -EBUSY: vma lock failed + */ +static int try_down_read_slot_mmap_sem(struct vma_slot *slot) +{ + struct vm_area_struct *vma; + struct mm_struct *mm; + struct rw_semaphore *sem; + + spin_lock(&vma_slot_list_lock); + + /* the slot_list was removed and inited from new list, when it enters + * uksm_list. If now it's not empty, then it must be moved to del list + */ + if (!slot_in_uksm(slot)) { + spin_unlock(&vma_slot_list_lock); + return -ENOENT; + } + + BUG_ON(slot->pages != vma_pages(slot->vma)); + /* Ok, vma still valid */ + vma = slot->vma; + mm = vma->vm_mm; + sem = &mm->mmap_sem; + + if (uksm_test_exit(mm)) { + spin_unlock(&vma_slot_list_lock); + return -ENOENT; + } + + if (down_read_trylock(sem)) { + spin_unlock(&vma_slot_list_lock); + if (slot_pool_alloc(slot)) { + uksm_remove_vma(vma); + up_read(sem); + return -ENOENT; + } + return 0; + } + + spin_unlock(&vma_slot_list_lock); + return -EBUSY; +} + +static inline unsigned long +vma_page_address(struct page *page, struct vm_area_struct *vma) +{ + pgoff_t pgoff = page->index; + unsigned long address; + + address = vma->vm_start + ((pgoff - vma->vm_pgoff) << PAGE_SHIFT); + if (unlikely(address < vma->vm_start || address >= vma->vm_end)) { + /* page should be within @vma mapping range */ + return -EFAULT; + } + return address; +} + + +/* return 0 on success with the item's mmap_sem locked */ +static inline int get_mergeable_page_lock_mmap(struct rmap_item *item) +{ + struct mm_struct *mm; + struct vma_slot *slot = item->slot; + int err = -EINVAL; + + struct page *page; + + /* + * try_down_read_slot_mmap_sem() returns non-zero if the slot + * has been removed by uksm_remove_vma(). + */ + if (try_down_read_slot_mmap_sem(slot)) + return -EBUSY; + + mm = slot->vma->vm_mm; + + if (uksm_test_exit(mm)) + goto failout_up; + + page = item->page; + rcu_read_lock(); + if (!get_page_unless_zero(page)) { + rcu_read_unlock(); + goto failout_up; + } + + /* No need to consider huge page here. */ + if (item->slot->vma->anon_vma != page_anon_vma(page) || + vma_page_address(page, item->slot->vma) != get_rmap_addr(item)) { + /* + * TODO: + * should we release this item becase of its stale page + * mapping? + */ + put_page(page); + rcu_read_unlock(); + goto failout_up; + } + rcu_read_unlock(); + return 0; + +failout_up: + up_read(&mm->mmap_sem); + return err; +} + +/* + * What kind of VMA is considered ? + */ +static inline int vma_can_enter(struct vm_area_struct *vma) +{ + return uksm_flags_can_scan(vma->vm_flags); +} + +/* + * Called whenever a fresh new vma is created A new vma_slot. + * is created and inserted into a global list Must be called. + * after vma is inserted to its mm. + */ +void uksm_vma_add_new(struct vm_area_struct *vma) +{ + struct vma_slot *slot; + + if (!vma_can_enter(vma)) { + vma->uksm_vma_slot = NULL; + return; + } + + slot = alloc_vma_slot(); + if (!slot) { + vma->uksm_vma_slot = NULL; + return; + } + + vma->uksm_vma_slot = slot; + vma->vm_flags |= VM_MERGEABLE; + slot->vma = vma; + slot->mm = vma->vm_mm; + slot->ctime_j = jiffies; + slot->pages = vma_pages(vma); + spin_lock(&vma_slot_list_lock); + list_add_tail(&slot->slot_list, &vma_slot_new); + spin_unlock(&vma_slot_list_lock); +} + +/* 32/3 < they < 32/2 */ +#define shiftl 8 +#define shiftr 12 + +#define HASH_FROM_TO(from, to) \ +for (index = from; index < to; index++) { \ + pos = random_nums[index]; \ + hash += key[pos]; \ + hash += (hash << shiftl); \ + hash ^= (hash >> shiftr); \ +} + + +#define HASH_FROM_DOWN_TO(from, to) \ +for (index = from - 1; index >= to; index--) { \ + hash ^= (hash >> shiftr); \ + hash ^= (hash >> (shiftr*2)); \ + hash -= (hash << shiftl); \ + hash += (hash << (shiftl*2)); \ + pos = random_nums[index]; \ + hash -= key[pos]; \ +} + +/* + * The main random sample hash function. + */ +static u32 random_sample_hash(void *addr, u32 hash_strength) +{ + u32 hash = 0xdeadbeef; + int index, pos, loop = hash_strength; + u32 *key = (u32 *)addr; + + if (loop > HASH_STRENGTH_FULL) + loop = HASH_STRENGTH_FULL; + + HASH_FROM_TO(0, loop); + + if (hash_strength > HASH_STRENGTH_FULL) { + loop = hash_strength - HASH_STRENGTH_FULL; + HASH_FROM_TO(0, loop); + } + + return hash; +} + + +/** + * It's used when hash strength is adjusted + * + * @addr The page's virtual address + * @from The original hash strength + * @to The hash strength changed to + * @hash The hash value generated with "from" hash value + * + * return the hash value + */ +static u32 delta_hash(void *addr, int from, int to, u32 hash) +{ + u32 *key = (u32 *)addr; + int index, pos; /* make sure they are int type */ + + if (to > from) { + if (from >= HASH_STRENGTH_FULL) { + from -= HASH_STRENGTH_FULL; + to -= HASH_STRENGTH_FULL; + HASH_FROM_TO(from, to); + } else if (to <= HASH_STRENGTH_FULL) { + HASH_FROM_TO(from, to); + } else { + HASH_FROM_TO(from, HASH_STRENGTH_FULL); + HASH_FROM_TO(0, to - HASH_STRENGTH_FULL); + } + } else { + if (from <= HASH_STRENGTH_FULL) { + HASH_FROM_DOWN_TO(from, to); + } else if (to >= HASH_STRENGTH_FULL) { + from -= HASH_STRENGTH_FULL; + to -= HASH_STRENGTH_FULL; + HASH_FROM_DOWN_TO(from, to); + } else { + HASH_FROM_DOWN_TO(from - HASH_STRENGTH_FULL, 0); + HASH_FROM_DOWN_TO(HASH_STRENGTH_FULL, to); + } + } + + return hash; +} + +/** + * + * Called when: rshash_pos or rshash_neg is about to overflow or a scan round + * has finished. + * + * return 0 if no page has been scanned since last call, 1 otherwise. + */ +static inline int encode_benefit(void) +{ + u64 scanned_delta, pos_delta, neg_delta; + unsigned long base = benefit.base; + + scanned_delta = uksm_pages_scanned - uksm_pages_scanned_last; + + if (!scanned_delta) + return 0; + + scanned_delta >>= base; + pos_delta = rshash_pos >> base; + neg_delta = rshash_neg >> base; + + if (CAN_OVERFLOW_U64(benefit.pos, pos_delta) || + CAN_OVERFLOW_U64(benefit.neg, neg_delta) || + CAN_OVERFLOW_U64(benefit.scanned, scanned_delta)) { + benefit.scanned >>= 1; + benefit.neg >>= 1; + benefit.pos >>= 1; + benefit.base++; + scanned_delta >>= 1; + pos_delta >>= 1; + neg_delta >>= 1; + } + + benefit.pos += pos_delta; + benefit.neg += neg_delta; + benefit.scanned += scanned_delta; + + BUG_ON(!benefit.scanned); + + rshash_pos = rshash_neg = 0; + uksm_pages_scanned_last = uksm_pages_scanned; + + return 1; +} + +static inline void reset_benefit(void) +{ + benefit.pos = 0; + benefit.neg = 0; + benefit.base = 0; + benefit.scanned = 0; +} + +static inline void inc_rshash_pos(unsigned long delta) +{ + if (CAN_OVERFLOW_U64(rshash_pos, delta)) + encode_benefit(); + + rshash_pos += delta; +} + +static inline void inc_rshash_neg(unsigned long delta) +{ + if (CAN_OVERFLOW_U64(rshash_neg, delta)) + encode_benefit(); + + rshash_neg += delta; +} + + +static inline u32 page_hash(struct page *page, unsigned long hash_strength, + int cost_accounting) +{ + u32 val; + unsigned long delta; + + void *addr = kmap_atomic(page); + + val = random_sample_hash(addr, hash_strength); + kunmap_atomic(addr); + + if (cost_accounting) { + if (hash_strength < HASH_STRENGTH_FULL) + delta = HASH_STRENGTH_FULL - hash_strength; + else + delta = 0; + + inc_rshash_pos(delta); + } + + return val; +} + +static int memcmp_pages(struct page *page1, struct page *page2, + int cost_accounting) +{ + char *addr1, *addr2; + int ret; + + addr1 = kmap_atomic(page1); + addr2 = kmap_atomic(page2); + ret = memcmp(addr1, addr2, PAGE_SIZE); + kunmap_atomic(addr2); + kunmap_atomic(addr1); + + if (cost_accounting) + inc_rshash_neg(memcmp_cost); + + return ret; +} + +static inline int pages_identical(struct page *page1, struct page *page2) +{ + return !memcmp_pages(page1, page2, 0); +} + +static inline int is_page_full_zero(struct page *page) +{ + char *addr; + int ret; + + addr = kmap_atomic(page); + ret = is_full_zero(addr, PAGE_SIZE); + kunmap_atomic(addr); + + return ret; +} + +static int write_protect_page(struct vm_area_struct *vma, struct page *page, + pte_t *orig_pte, pte_t *old_pte) +{ + struct mm_struct *mm = vma->vm_mm; + struct page_vma_mapped_walk pvmw = { + .page = page, + .vma = vma, + }; + int swapped; + int err = -EFAULT; + unsigned long mmun_start; /* For mmu_notifiers */ + unsigned long mmun_end; /* For mmu_notifiers */ + + pvmw.address = page_address_in_vma(page, vma); + if (pvmw.address == -EFAULT) + goto out; + + BUG_ON(PageTransCompound(page)); + + mmun_start = pvmw.address; + mmun_end = pvmw.address + PAGE_SIZE; + mmu_notifier_invalidate_range_start(mm, mmun_start, mmun_end); + + if (!page_vma_mapped_walk(&pvmw)) + goto out_mn; + if (WARN_ONCE(!pvmw.pte, "Unexpected PMD mapping?")) + goto out_unlock; + + if (old_pte) + *old_pte = *pvmw.pte; + + if (pte_write(*pvmw.pte) || pte_dirty(*pvmw.pte) || + (pte_protnone(*pvmw.pte) && pte_savedwrite(*pvmw.pte)) || mm_tlb_flush_pending(mm)) { + pte_t entry; + + swapped = PageSwapCache(page); + flush_cache_page(vma, pvmw.address, page_to_pfn(page)); + /* + * Ok this is tricky, when get_user_pages_fast() run it doesn't + * take any lock, therefore the check that we are going to make + * with the pagecount against the mapcount is racey and + * O_DIRECT can happen right after the check. + * So we clear the pte and flush the tlb before the check + * this assure us that no O_DIRECT can happen after the check + * or in the middle of the check. + */ + entry = ptep_clear_flush_notify(vma, pvmw.address, pvmw.pte); + /* + * Check that no O_DIRECT or similar I/O is in progress on the + * page + */ + if (page_mapcount(page) + 1 + swapped != page_count(page)) { + set_pte_at(mm, pvmw.address, pvmw.pte, entry); + goto out_unlock; + } + if (pte_dirty(entry)) + set_page_dirty(page); + + if (pte_protnone(entry)) + entry = pte_mkclean(pte_clear_savedwrite(entry)); + else + entry = pte_mkclean(pte_wrprotect(entry)); + + set_pte_at_notify(mm, pvmw.address, pvmw.pte, entry); + } + *orig_pte = *pvmw.pte; + err = 0; + +out_unlock: + page_vma_mapped_walk_done(&pvmw); +out_mn: + mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end); +out: + return err; +} + +#define MERGE_ERR_PGERR 1 /* the page is invalid cannot continue */ +#define MERGE_ERR_COLLI 2 /* there is a collision */ +#define MERGE_ERR_COLLI_MAX 3 /* collision at the max hash strength */ +#define MERGE_ERR_CHANGED 4 /* the page has changed since last hash */ + + +/** + * replace_page - replace page in vma by new ksm page + * @vma: vma that holds the pte pointing to page + * @page: the page we are replacing by kpage + * @kpage: the ksm page we replace page by + * @orig_pte: the original value of the pte + * + * Returns 0 on success, MERGE_ERR_PGERR on failure. + */ +static int replace_page(struct vm_area_struct *vma, struct page *page, + struct page *kpage, pte_t orig_pte) +{ + struct mm_struct *mm = vma->vm_mm; + pgd_t *pgd; + p4d_t *p4d; + pud_t *pud; + pmd_t *pmd; + pte_t *ptep; + spinlock_t *ptl; + pte_t entry; + + unsigned long addr; + int err = MERGE_ERR_PGERR; + unsigned long mmun_start; /* For mmu_notifiers */ + unsigned long mmun_end; /* For mmu_notifiers */ + + addr = page_address_in_vma(page, vma); + if (addr == -EFAULT) + goto out; + + pgd = pgd_offset(mm, addr); + if (!pgd_present(*pgd)) + goto out; + + p4d = p4d_offset(pgd, addr); + pud = pud_offset(p4d, addr); + if (!pud_present(*pud)) + goto out; + + pmd = pmd_offset(pud, addr); + BUG_ON(pmd_trans_huge(*pmd)); + if (!pmd_present(*pmd)) + goto out; + + mmun_start = addr; + mmun_end = addr + PAGE_SIZE; + mmu_notifier_invalidate_range_start(mm, mmun_start, mmun_end); + + ptep = pte_offset_map_lock(mm, pmd, addr, &ptl); + if (!pte_same(*ptep, orig_pte)) { + pte_unmap_unlock(ptep, ptl); + goto out_mn; + } + + flush_cache_page(vma, addr, pte_pfn(*ptep)); + ptep_clear_flush_notify(vma, addr, ptep); + entry = mk_pte(kpage, vma->vm_page_prot); + + /* special treatment is needed for zero_page */ + if ((page_to_pfn(kpage) == uksm_zero_pfn) || + (page_to_pfn(kpage) == zero_pfn)) { + entry = pte_mkspecial(entry); + dec_mm_counter(mm, MM_ANONPAGES); + inc_zone_page_state(page, NR_UKSM_ZERO_PAGES); + } else { + get_page(kpage); + page_add_anon_rmap(kpage, vma, addr, false); + } + + set_pte_at_notify(mm, addr, ptep, entry); + + page_remove_rmap(page, false); + if (!page_mapped(page)) + try_to_free_swap(page); + put_page(page); + + pte_unmap_unlock(ptep, ptl); + err = 0; +out_mn: + mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end); +out: + return err; +} + + +/** + * Fully hash a page with HASH_STRENGTH_MAX return a non-zero hash value. The + * zero hash value at HASH_STRENGTH_MAX is used to indicated that its + * hash_max member has not been calculated. + * + * @page The page needs to be hashed + * @hash_old The hash value calculated with current hash strength + * + * return the new hash value calculated at HASH_STRENGTH_MAX + */ +static inline u32 page_hash_max(struct page *page, u32 hash_old) +{ + u32 hash_max = 0; + void *addr; + + addr = kmap_atomic(page); + hash_max = delta_hash(addr, hash_strength, + HASH_STRENGTH_MAX, hash_old); + + kunmap_atomic(addr); + + if (!hash_max) + hash_max = 1; + + inc_rshash_neg(HASH_STRENGTH_MAX - hash_strength); + return hash_max; +} + +/* + * We compare the hash again, to ensure that it is really a hash collision + * instead of being caused by page write. + */ +static inline int check_collision(struct rmap_item *rmap_item, + u32 hash) +{ + int err; + struct page *page = rmap_item->page; + + /* if this rmap_item has already been hash_maxed, then the collision + * must appears in the second-level rbtree search. In this case we check + * if its hash_max value has been changed. Otherwise, the collision + * happens in the first-level rbtree search, so we check against it's + * current hash value. + */ + if (rmap_item->hash_max) { + inc_rshash_neg(memcmp_cost); + inc_rshash_neg(HASH_STRENGTH_MAX - hash_strength); + + if (rmap_item->hash_max == page_hash_max(page, hash)) + err = MERGE_ERR_COLLI; + else + err = MERGE_ERR_CHANGED; + } else { + inc_rshash_neg(memcmp_cost + hash_strength); + + if (page_hash(page, hash_strength, 0) == hash) + err = MERGE_ERR_COLLI; + else + err = MERGE_ERR_CHANGED; + } + + return err; +} + +/** + * Try to merge a rmap_item.page with a kpage in stable node. kpage must + * already be a ksm page. + * + * @return 0 if the pages were merged, -EFAULT otherwise. + */ +static int try_to_merge_with_uksm_page(struct rmap_item *rmap_item, + struct page *kpage, u32 hash) +{ + struct vm_area_struct *vma = rmap_item->slot->vma; + struct mm_struct *mm = vma->vm_mm; + pte_t orig_pte = __pte(0); + int err = MERGE_ERR_PGERR; + struct page *page; + + if (uksm_test_exit(mm)) + goto out; + + page = rmap_item->page; + + if (page == kpage) { /* ksm page forked */ + err = 0; + goto out; + } + + /* + * We need the page lock to read a stable PageSwapCache in + * write_protect_page(). We use trylock_page() instead of + * lock_page() because we don't want to wait here - we + * prefer to continue scanning and merging different pages, + * then come back to this page when it is unlocked. + */ + if (!trylock_page(page)) + goto out; + + if (!PageAnon(page) || !PageKsm(kpage)) + goto out_unlock; + + if (PageTransCompound(page)) { + err = split_huge_page(page); + if (err) + goto out_unlock; + } + + /* + * If this anonymous page is mapped only here, its pte may need + * to be write-protected. If it's mapped elsewhere, all of its + * ptes are necessarily already write-protected. But in either + * case, we need to lock and check page_count is not raised. + */ + if (write_protect_page(vma, page, &orig_pte, NULL) == 0) { + if (pages_identical(page, kpage)) + err = replace_page(vma, page, kpage, orig_pte); + else + err = check_collision(rmap_item, hash); + } + + if ((vma->vm_flags & VM_LOCKED) && kpage && !err) { + munlock_vma_page(page); + if (!PageMlocked(kpage)) { + unlock_page(page); + lock_page(kpage); + mlock_vma_page(kpage); + page = kpage; /* for final unlock */ + } + } + +out_unlock: + unlock_page(page); +out: + return err; +} + + + +/** + * If two pages fail to merge in try_to_merge_two_pages, then we have a chance + * to restore a page mapping that has been changed in try_to_merge_two_pages. + * + * @return 0 on success. + */ +static int restore_uksm_page_pte(struct vm_area_struct *vma, unsigned long addr, + pte_t orig_pte, pte_t wprt_pte) +{ + struct mm_struct *mm = vma->vm_mm; + pgd_t *pgd; + p4d_t *p4d; + pud_t *pud; + pmd_t *pmd; + pte_t *ptep; + spinlock_t *ptl; + + int err = -EFAULT; + + pgd = pgd_offset(mm, addr); + if (!pgd_present(*pgd)) + goto out; + + p4d = p4d_offset(pgd, addr); + pud = pud_offset(p4d, addr); + if (!pud_present(*pud)) + goto out; + + pmd = pmd_offset(pud, addr); + if (!pmd_present(*pmd)) + goto out; + + ptep = pte_offset_map_lock(mm, pmd, addr, &ptl); + if (!pte_same(*ptep, wprt_pte)) { + /* already copied, let it be */ + pte_unmap_unlock(ptep, ptl); + goto out; + } + + /* + * Good boy, still here. When we still get the ksm page, it does not + * return to the free page pool, there is no way that a pte was changed + * to other page and gets back to this page. And remind that ksm page + * do not reuse in do_wp_page(). So it's safe to restore the original + * pte. + */ + flush_cache_page(vma, addr, pte_pfn(*ptep)); + ptep_clear_flush_notify(vma, addr, ptep); + set_pte_at_notify(mm, addr, ptep, orig_pte); + + pte_unmap_unlock(ptep, ptl); + err = 0; +out: + return err; +} + +/** + * try_to_merge_two_pages() - take two identical pages and prepare + * them to be merged into one page(rmap_item->page) + * + * @return 0 if we successfully merged two identical pages into + * one ksm page. MERGE_ERR_COLLI if it's only a hash collision + * search in rbtree. MERGE_ERR_CHANGED if rmap_item has been + * changed since it's hashed. MERGE_ERR_PGERR otherwise. + * + */ +static int try_to_merge_two_pages(struct rmap_item *rmap_item, + struct rmap_item *tree_rmap_item, + u32 hash) +{ + pte_t orig_pte1 = __pte(0), orig_pte2 = __pte(0); + pte_t wprt_pte1 = __pte(0), wprt_pte2 = __pte(0); + struct vm_area_struct *vma1 = rmap_item->slot->vma; + struct vm_area_struct *vma2 = tree_rmap_item->slot->vma; + struct page *page = rmap_item->page; + struct page *tree_page = tree_rmap_item->page; + int err = MERGE_ERR_PGERR; + struct address_space *saved_mapping; + + + if (rmap_item->page == tree_rmap_item->page) + goto out; + + if (!trylock_page(page)) + goto out; + + if (!PageAnon(page)) + goto out_unlock; + + if (PageTransCompound(page)) { + err = split_huge_page(page); + if (err) + goto out_unlock; + } + + if (write_protect_page(vma1, page, &wprt_pte1, &orig_pte1) != 0) { + unlock_page(page); + goto out; + } + + /* + * While we hold page lock, upgrade page from + * PageAnon+anon_vma to PageKsm+NULL stable_node: + * stable_tree_insert() will update stable_node. + */ + saved_mapping = page->mapping; + set_page_stable_node(page, NULL); + mark_page_accessed(page); + if (!PageDirty(page)) + SetPageDirty(page); + + unlock_page(page); + + if (!trylock_page(tree_page)) + goto restore_out; + + if (!PageAnon(tree_page)) { + unlock_page(tree_page); + goto restore_out; + } + + if (PageTransCompound(tree_page)) { + err = split_huge_page(tree_page); + if (err) { + unlock_page(tree_page); + goto restore_out; + } + } + + if (write_protect_page(vma2, tree_page, &wprt_pte2, &orig_pte2) != 0) { + unlock_page(tree_page); + goto restore_out; + } + + if (pages_identical(page, tree_page)) { + err = replace_page(vma2, tree_page, page, wprt_pte2); + if (err) { + unlock_page(tree_page); + goto restore_out; + } + + if ((vma2->vm_flags & VM_LOCKED)) { + munlock_vma_page(tree_page); + if (!PageMlocked(page)) { + unlock_page(tree_page); + lock_page(page); + mlock_vma_page(page); + tree_page = page; /* for final unlock */ + } + } + + unlock_page(tree_page); + + goto out; /* success */ + + } else { + if (tree_rmap_item->hash_max && + tree_rmap_item->hash_max == rmap_item->hash_max) { + err = MERGE_ERR_COLLI_MAX; + } else if (page_hash(page, hash_strength, 0) == + page_hash(tree_page, hash_strength, 0)) { + inc_rshash_neg(memcmp_cost + hash_strength * 2); + err = MERGE_ERR_COLLI; + } else { + err = MERGE_ERR_CHANGED; + } + + unlock_page(tree_page); + } + +restore_out: + lock_page(page); + if (!restore_uksm_page_pte(vma1, get_rmap_addr(rmap_item), + orig_pte1, wprt_pte1)) + page->mapping = saved_mapping; + +out_unlock: + unlock_page(page); +out: + return err; +} + +static inline int hash_cmp(u32 new_val, u32 node_val) +{ + if (new_val > node_val) + return 1; + else if (new_val < node_val) + return -1; + else + return 0; +} + +static inline u32 rmap_item_hash_max(struct rmap_item *item, u32 hash) +{ + u32 hash_max = item->hash_max; + + if (!hash_max) { + hash_max = page_hash_max(item->page, hash); + + item->hash_max = hash_max; + } + + return hash_max; +} + + + +/** + * stable_tree_search() - search the stable tree for a page + * + * @item: the rmap_item we are comparing with + * @hash: the hash value of this item->page already calculated + * + * @return the page we have found, NULL otherwise. The page returned has + * been gotten. + */ +static struct page *stable_tree_search(struct rmap_item *item, u32 hash) +{ + struct rb_node *node = root_stable_treep->rb_node; + struct tree_node *tree_node; + unsigned long hash_max; + struct page *page = item->page; + struct stable_node *stable_node; + + stable_node = page_stable_node(page); + if (stable_node) { + /* ksm page forked, that is + * if (PageKsm(page) && !in_stable_tree(rmap_item)) + * it's actually gotten once outside. + */ + get_page(page); + return page; + } + + while (node) { + int cmp; + + tree_node = rb_entry(node, struct tree_node, node); + + cmp = hash_cmp(hash, tree_node->hash); + + if (cmp < 0) + node = node->rb_left; + else if (cmp > 0) + node = node->rb_right; + else + break; + } + + if (!node) + return NULL; + + if (tree_node->count == 1) { + stable_node = rb_entry(tree_node->sub_root.rb_node, + struct stable_node, node); + BUG_ON(!stable_node); + + goto get_page_out; + } + + /* + * ok, we have to search the second + * level subtree, hash the page to a + * full strength. + */ + node = tree_node->sub_root.rb_node; + BUG_ON(!node); + hash_max = rmap_item_hash_max(item, hash); + + while (node) { + int cmp; + + stable_node = rb_entry(node, struct stable_node, node); + + cmp = hash_cmp(hash_max, stable_node->hash_max); + + if (cmp < 0) + node = node->rb_left; + else if (cmp > 0) + node = node->rb_right; + else + goto get_page_out; + } + + return NULL; + +get_page_out: + page = get_uksm_page(stable_node, 1, 1); + return page; +} + +static int try_merge_rmap_item(struct rmap_item *item, + struct page *kpage, + struct page *tree_page) +{ + struct vm_area_struct *vma = item->slot->vma; + struct page_vma_mapped_walk pvmw = { + .page = kpage, + .vma = vma, + }; + + pvmw.address = get_rmap_addr(item); + if (!page_vma_mapped_walk(&pvmw)) + return 0; + + if (pte_write(*pvmw.pte)) { + /* has changed, abort! */ + page_vma_mapped_walk_done(&pvmw); + return 0; + } + + get_page(tree_page); + page_add_anon_rmap(tree_page, vma, pvmw.address, false); + + flush_cache_page(vma, pvmw.address, page_to_pfn(kpage)); + ptep_clear_flush_notify(vma, pvmw.address, pvmw.pte); + set_pte_at_notify(vma->vm_mm, pvmw.address, pvmw.pte, + mk_pte(tree_page, vma->vm_page_prot)); + + page_remove_rmap(kpage, false); + put_page(kpage); + + page_vma_mapped_walk_done(&pvmw); + + return 1; +} + +/** + * try_to_merge_with_stable_page() - when two rmap_items need to be inserted + * into stable tree, the page was found to be identical to a stable ksm page, + * this is the last chance we can merge them into one. + * + * @item1: the rmap_item holding the page which we wanted to insert + * into stable tree. + * @item2: the other rmap_item we found when unstable tree search + * @oldpage: the page currently mapped by the two rmap_items + * @tree_page: the page we found identical in stable tree node + * @success1: return if item1 is successfully merged + * @success2: return if item2 is successfully merged + */ +static void try_merge_with_stable(struct rmap_item *item1, + struct rmap_item *item2, + struct page **kpage, + struct page *tree_page, + int *success1, int *success2) +{ + struct vm_area_struct *vma1 = item1->slot->vma; + struct vm_area_struct *vma2 = item2->slot->vma; + *success1 = 0; + *success2 = 0; + + if (unlikely(*kpage == tree_page)) { + /* I don't think this can really happen */ + pr_warn("UKSM: unexpected condition detected in " + "%s -- *kpage == tree_page !\n", __func__); + *success1 = 1; + *success2 = 1; + return; + } + + if (!PageAnon(*kpage) || !PageKsm(*kpage)) + goto failed; + + if (!trylock_page(tree_page)) + goto failed; + + /* If the oldpage is still ksm and still pointed + * to in the right place, and still write protected, + * we are confident it's not changed, no need to + * memcmp anymore. + * be ware, we cannot take nested pte locks, + * deadlock risk. + */ + if (!try_merge_rmap_item(item1, *kpage, tree_page)) + goto unlock_failed; + + /* ok, then vma2, remind that pte1 already set */ + if (!try_merge_rmap_item(item2, *kpage, tree_page)) + goto success_1; + + *success2 = 1; +success_1: + *success1 = 1; + + + if ((*success1 && vma1->vm_flags & VM_LOCKED) || + (*success2 && vma2->vm_flags & VM_LOCKED)) { + munlock_vma_page(*kpage); + if (!PageMlocked(tree_page)) + mlock_vma_page(tree_page); + } + + /* + * We do not need oldpage any more in the caller, so can break the lock + * now. + */ + unlock_page(*kpage); + *kpage = tree_page; /* Get unlocked outside. */ + return; + +unlock_failed: + unlock_page(tree_page); +failed: + return; +} + +static inline void stable_node_hash_max(struct stable_node *node, + struct page *page, u32 hash) +{ + u32 hash_max = node->hash_max; + + if (!hash_max) { + hash_max = page_hash_max(page, hash); + node->hash_max = hash_max; + } +} + +static inline +struct stable_node *new_stable_node(struct tree_node *tree_node, + struct page *kpage, u32 hash_max) +{ + struct stable_node *new_stable_node; + + new_stable_node = alloc_stable_node(); + if (!new_stable_node) + return NULL; + + new_stable_node->kpfn = page_to_pfn(kpage); + new_stable_node->hash_max = hash_max; + new_stable_node->tree_node = tree_node; + set_page_stable_node(kpage, new_stable_node); + + return new_stable_node; +} + +static inline +struct stable_node *first_level_insert(struct tree_node *tree_node, + struct rmap_item *rmap_item, + struct rmap_item *tree_rmap_item, + struct page **kpage, u32 hash, + int *success1, int *success2) +{ + int cmp; + struct page *tree_page; + u32 hash_max = 0; + struct stable_node *stable_node, *new_snode; + struct rb_node *parent = NULL, **new; + + /* this tree node contains no sub-tree yet */ + stable_node = rb_entry(tree_node->sub_root.rb_node, + struct stable_node, node); + + tree_page = get_uksm_page(stable_node, 1, 0); + if (tree_page) { + cmp = memcmp_pages(*kpage, tree_page, 1); + if (!cmp) { + try_merge_with_stable(rmap_item, tree_rmap_item, kpage, + tree_page, success1, success2); + put_page(tree_page); + if (!*success1 && !*success2) + goto failed; + + return stable_node; + + } else { + /* + * collision in first level try to create a subtree. + * A new node need to be created. + */ + put_page(tree_page); + + stable_node_hash_max(stable_node, tree_page, + tree_node->hash); + hash_max = rmap_item_hash_max(rmap_item, hash); + cmp = hash_cmp(hash_max, stable_node->hash_max); + + parent = &stable_node->node; + if (cmp < 0) + new = &parent->rb_left; + else if (cmp > 0) + new = &parent->rb_right; + else + goto failed; + } + + } else { + /* the only stable_node deleted, we reuse its tree_node. + */ + parent = NULL; + new = &tree_node->sub_root.rb_node; + } + + new_snode = new_stable_node(tree_node, *kpage, hash_max); + if (!new_snode) + goto failed; + + rb_link_node(&new_snode->node, parent, new); + rb_insert_color(&new_snode->node, &tree_node->sub_root); + tree_node->count++; + *success1 = *success2 = 1; + + return new_snode; + +failed: + return NULL; +} + +static inline +struct stable_node *stable_subtree_insert(struct tree_node *tree_node, + struct rmap_item *rmap_item, + struct rmap_item *tree_rmap_item, + struct page **kpage, u32 hash, + int *success1, int *success2) +{ + struct page *tree_page; + u32 hash_max; + struct stable_node *stable_node, *new_snode; + struct rb_node *parent, **new; + +research: + parent = NULL; + new = &tree_node->sub_root.rb_node; + BUG_ON(!*new); + hash_max = rmap_item_hash_max(rmap_item, hash); + while (*new) { + int cmp; + + stable_node = rb_entry(*new, struct stable_node, node); + + cmp = hash_cmp(hash_max, stable_node->hash_max); + + if (cmp < 0) { + parent = *new; + new = &parent->rb_left; + } else if (cmp > 0) { + parent = *new; + new = &parent->rb_right; + } else { + tree_page = get_uksm_page(stable_node, 1, 0); + if (tree_page) { + cmp = memcmp_pages(*kpage, tree_page, 1); + if (!cmp) { + try_merge_with_stable(rmap_item, + tree_rmap_item, kpage, + tree_page, success1, success2); + + put_page(tree_page); + if (!*success1 && !*success2) + goto failed; + /* + * successfully merged with a stable + * node + */ + return stable_node; + } else { + put_page(tree_page); + goto failed; + } + } else { + /* + * stable node may be deleted, + * and subtree maybe + * restructed, cannot + * continue, research it. + */ + if (tree_node->count) { + goto research; + } else { + /* reuse the tree node*/ + parent = NULL; + new = &tree_node->sub_root.rb_node; + } + } + } + } + + new_snode = new_stable_node(tree_node, *kpage, hash_max); + if (!new_snode) + goto failed; + + rb_link_node(&new_snode->node, parent, new); + rb_insert_color(&new_snode->node, &tree_node->sub_root); + tree_node->count++; + *success1 = *success2 = 1; + + return new_snode; + +failed: + return NULL; +} + + +/** + * stable_tree_insert() - try to insert a merged page in unstable tree to + * the stable tree + * + * @kpage: the page need to be inserted + * @hash: the current hash of this page + * @rmap_item: the rmap_item being scanned + * @tree_rmap_item: the rmap_item found on unstable tree + * @success1: return if rmap_item is merged + * @success2: return if tree_rmap_item is merged + * + * @return the stable_node on stable tree if at least one + * rmap_item is inserted into stable tree, NULL + * otherwise. + */ +static struct stable_node * +stable_tree_insert(struct page **kpage, u32 hash, + struct rmap_item *rmap_item, + struct rmap_item *tree_rmap_item, + int *success1, int *success2) +{ + struct rb_node **new = &root_stable_treep->rb_node; + struct rb_node *parent = NULL; + struct stable_node *stable_node; + struct tree_node *tree_node; + u32 hash_max = 0; + + *success1 = *success2 = 0; + + while (*new) { + int cmp; + + tree_node = rb_entry(*new, struct tree_node, node); + + cmp = hash_cmp(hash, tree_node->hash); + + if (cmp < 0) { + parent = *new; + new = &parent->rb_left; + } else if (cmp > 0) { + parent = *new; + new = &parent->rb_right; + } else + break; + } + + if (*new) { + if (tree_node->count == 1) { + stable_node = first_level_insert(tree_node, rmap_item, + tree_rmap_item, kpage, + hash, success1, success2); + } else { + stable_node = stable_subtree_insert(tree_node, + rmap_item, tree_rmap_item, kpage, + hash, success1, success2); + } + } else { + + /* no tree node found */ + tree_node = alloc_tree_node(stable_tree_node_listp); + if (!tree_node) { + stable_node = NULL; + goto out; + } + + stable_node = new_stable_node(tree_node, *kpage, hash_max); + if (!stable_node) { + free_tree_node(tree_node); + goto out; + } + + tree_node->hash = hash; + rb_link_node(&tree_node->node, parent, new); + rb_insert_color(&tree_node->node, root_stable_treep); + parent = NULL; + new = &tree_node->sub_root.rb_node; + + rb_link_node(&stable_node->node, parent, new); + rb_insert_color(&stable_node->node, &tree_node->sub_root); + tree_node->count++; + *success1 = *success2 = 1; + } + +out: + return stable_node; +} + + +/** + * get_tree_rmap_item_page() - try to get the page and lock the mmap_sem + * + * @return 0 on success, -EBUSY if unable to lock the mmap_sem, + * -EINVAL if the page mapping has been changed. + */ +static inline int get_tree_rmap_item_page(struct rmap_item *tree_rmap_item) +{ + int err; + + err = get_mergeable_page_lock_mmap(tree_rmap_item); + + if (err == -EINVAL) { + /* its page map has been changed, remove it */ + remove_rmap_item_from_tree(tree_rmap_item); + } + + /* The page is gotten and mmap_sem is locked now. */ + return err; +} + + +/** + * unstable_tree_search_insert() - search an unstable tree rmap_item with the + * same hash value. Get its page and trylock the mmap_sem + */ +static inline +struct rmap_item *unstable_tree_search_insert(struct rmap_item *rmap_item, + u32 hash) + +{ + struct rb_node **new = &root_unstable_tree.rb_node; + struct rb_node *parent = NULL; + struct tree_node *tree_node; + u32 hash_max; + struct rmap_item *tree_rmap_item; + + while (*new) { + int cmp; + + tree_node = rb_entry(*new, struct tree_node, node); + + cmp = hash_cmp(hash, tree_node->hash); + + if (cmp < 0) { + parent = *new; + new = &parent->rb_left; + } else if (cmp > 0) { + parent = *new; + new = &parent->rb_right; + } else + break; + } + + if (*new) { + /* got the tree_node */ + if (tree_node->count == 1) { + tree_rmap_item = rb_entry(tree_node->sub_root.rb_node, + struct rmap_item, node); + BUG_ON(!tree_rmap_item); + + goto get_page_out; + } + + /* well, search the collision subtree */ + new = &tree_node->sub_root.rb_node; + BUG_ON(!*new); + hash_max = rmap_item_hash_max(rmap_item, hash); + + while (*new) { + int cmp; + + tree_rmap_item = rb_entry(*new, struct rmap_item, + node); + + cmp = hash_cmp(hash_max, tree_rmap_item->hash_max); + parent = *new; + if (cmp < 0) + new = &parent->rb_left; + else if (cmp > 0) + new = &parent->rb_right; + else + goto get_page_out; + } + } else { + /* alloc a new tree_node */ + tree_node = alloc_tree_node(&unstable_tree_node_list); + if (!tree_node) + return NULL; + + tree_node->hash = hash; + rb_link_node(&tree_node->node, parent, new); + rb_insert_color(&tree_node->node, &root_unstable_tree); + parent = NULL; + new = &tree_node->sub_root.rb_node; + } + + /* did not found even in sub-tree */ + rmap_item->tree_node = tree_node; + rmap_item->address |= UNSTABLE_FLAG; + rmap_item->hash_round = uksm_hash_round; + rb_link_node(&rmap_item->node, parent, new); + rb_insert_color(&rmap_item->node, &tree_node->sub_root); + + uksm_pages_unshared++; + return NULL; + +get_page_out: + if (tree_rmap_item->page == rmap_item->page) + return NULL; + + if (get_tree_rmap_item_page(tree_rmap_item)) + return NULL; + + return tree_rmap_item; +} + +static void hold_anon_vma(struct rmap_item *rmap_item, + struct anon_vma *anon_vma) +{ + rmap_item->anon_vma = anon_vma; + get_anon_vma(anon_vma); +} + + +/** + * stable_tree_append() - append a rmap_item to a stable node. Deduplication + * ratio statistics is done in this function. + * + */ +static void stable_tree_append(struct rmap_item *rmap_item, + struct stable_node *stable_node, int logdedup) +{ + struct node_vma *node_vma = NULL, *new_node_vma, *node_vma_cont = NULL; + unsigned long key = (unsigned long)rmap_item->slot; + unsigned long factor = rmap_item->slot->rung->step; + + BUG_ON(!stable_node); + rmap_item->address |= STABLE_FLAG; + + if (hlist_empty(&stable_node->hlist)) { + uksm_pages_shared++; + goto node_vma_new; + } else { + uksm_pages_sharing++; + } + + hlist_for_each_entry(node_vma, &stable_node->hlist, hlist) { + if (node_vma->key >= key) + break; + + if (logdedup) { + node_vma->slot->pages_bemerged += factor; + if (list_empty(&node_vma->slot->dedup_list)) + list_add(&node_vma->slot->dedup_list, + &vma_slot_dedup); + } + } + + if (node_vma) { + if (node_vma->key == key) { + node_vma_cont = hlist_entry_safe(node_vma->hlist.next, struct node_vma, hlist); + goto node_vma_ok; + } else if (node_vma->key > key) { + node_vma_cont = node_vma; + } + } + +node_vma_new: + /* no same vma already in node, alloc a new node_vma */ + new_node_vma = alloc_node_vma(); + BUG_ON(!new_node_vma); + new_node_vma->head = stable_node; + new_node_vma->slot = rmap_item->slot; + + if (!node_vma) { + hlist_add_head(&new_node_vma->hlist, &stable_node->hlist); + } else if (node_vma->key != key) { + if (node_vma->key < key) + hlist_add_behind(&new_node_vma->hlist, &node_vma->hlist); + else { + hlist_add_before(&new_node_vma->hlist, + &node_vma->hlist); + } + + } + node_vma = new_node_vma; + +node_vma_ok: /* ok, ready to add to the list */ + rmap_item->head = node_vma; + hlist_add_head(&rmap_item->hlist, &node_vma->rmap_hlist); + hold_anon_vma(rmap_item, rmap_item->slot->vma->anon_vma); + if (logdedup) { + rmap_item->slot->pages_merged++; + if (node_vma_cont) { + node_vma = node_vma_cont; + hlist_for_each_entry_continue(node_vma, hlist) { + node_vma->slot->pages_bemerged += factor; + if (list_empty(&node_vma->slot->dedup_list)) + list_add(&node_vma->slot->dedup_list, + &vma_slot_dedup); + } + } + } +} + +/* + * We use break_ksm to break COW on a ksm page: it's a stripped down + * + * if (get_user_pages(addr, 1, 1, 1, &page, NULL) == 1) + * put_page(page); + * + * but taking great care only to touch a ksm page, in a VM_MERGEABLE vma, + * in case the application has unmapped and remapped mm,addr meanwhile. + * Could a ksm page appear anywhere else? Actually yes, in a VM_PFNMAP + * mmap of /dev/mem or /dev/kmem, where we would not want to touch it. + */ +static int break_ksm(struct vm_area_struct *vma, unsigned long addr) +{ + struct page *page; + int ret = 0; + + do { + cond_resched(); + page = follow_page(vma, addr, FOLL_GET | FOLL_MIGRATION | FOLL_REMOTE); + if (IS_ERR_OR_NULL(page)) + break; + if (PageKsm(page)) { + ret = handle_mm_fault(vma, addr, + FAULT_FLAG_WRITE | FAULT_FLAG_REMOTE); + } else + ret = VM_FAULT_WRITE; + put_page(page); + } while (!(ret & (VM_FAULT_WRITE | VM_FAULT_SIGBUS | VM_FAULT_SIGSEGV | VM_FAULT_OOM))); + /* + * We must loop because handle_mm_fault() may back out if there's + * any difficulty e.g. if pte accessed bit gets updated concurrently. + * + * VM_FAULT_WRITE is what we have been hoping for: it indicates that + * COW has been broken, even if the vma does not permit VM_WRITE; + * but note that a concurrent fault might break PageKsm for us. + * + * VM_FAULT_SIGBUS could occur if we race with truncation of the + * backing file, which also invalidates anonymous pages: that's + * okay, that truncation will have unmapped the PageKsm for us. + * + * VM_FAULT_OOM: at the time of writing (late July 2009), setting + * aside mem_cgroup limits, VM_FAULT_OOM would only be set if the + * current task has TIF_MEMDIE set, and will be OOM killed on return + * to user; and ksmd, having no mm, would never be chosen for that. + * + * But if the mm is in a limited mem_cgroup, then the fault may fail + * with VM_FAULT_OOM even if the current task is not TIF_MEMDIE; and + * even ksmd can fail in this way - though it's usually breaking ksm + * just to undo a merge it made a moment before, so unlikely to oom. + * + * That's a pity: we might therefore have more kernel pages allocated + * than we're counting as nodes in the stable tree; but uksm_do_scan + * will retry to break_cow on each pass, so should recover the page + * in due course. The important thing is to not let VM_MERGEABLE + * be cleared while any such pages might remain in the area. + */ + return (ret & VM_FAULT_OOM) ? -ENOMEM : 0; +} + +static void break_cow(struct rmap_item *rmap_item) +{ + struct vm_area_struct *vma = rmap_item->slot->vma; + struct mm_struct *mm = vma->vm_mm; + unsigned long addr = get_rmap_addr(rmap_item); + + if (uksm_test_exit(mm)) + goto out; + + break_ksm(vma, addr); +out: + return; +} + +/* + * Though it's very tempting to unmerge in_stable_tree(rmap_item)s rather + * than check every pte of a given vma, the locking doesn't quite work for + * that - an rmap_item is assigned to the stable tree after inserting ksm + * page and upping mmap_sem. Nor does it fit with the way we skip dup'ing + * rmap_items from parent to child at fork time (so as not to waste time + * if exit comes before the next scan reaches it). + * + * Similarly, although we'd like to remove rmap_items (so updating counts + * and freeing memory) when unmerging an area, it's easier to leave that + * to the next pass of ksmd - consider, for example, how ksmd might be + * in cmp_and_merge_page on one of the rmap_items we would be removing. + */ +inline int unmerge_uksm_pages(struct vm_area_struct *vma, + unsigned long start, unsigned long end) +{ + unsigned long addr; + int err = 0; + + for (addr = start; addr < end && !err; addr += PAGE_SIZE) { + if (uksm_test_exit(vma->vm_mm)) + break; + if (signal_pending(current)) + err = -ERESTARTSYS; + else + err = break_ksm(vma, addr); + } + return err; +} + +static inline void inc_uksm_pages_scanned(void) +{ + u64 delta; + + + if (uksm_pages_scanned == U64_MAX) { + encode_benefit(); + + delta = uksm_pages_scanned >> pages_scanned_base; + + if (CAN_OVERFLOW_U64(pages_scanned_stored, delta)) { + pages_scanned_stored >>= 1; + delta >>= 1; + pages_scanned_base++; + } + + pages_scanned_stored += delta; + + uksm_pages_scanned = uksm_pages_scanned_last = 0; + } + + uksm_pages_scanned++; +} + +static inline int find_zero_page_hash(int strength, u32 hash) +{ + return (zero_hash_table[strength] == hash); +} + +static +int cmp_and_merge_zero_page(struct vm_area_struct *vma, struct page *page) +{ + struct page *zero_page = empty_uksm_zero_page; + struct mm_struct *mm = vma->vm_mm; + pte_t orig_pte = __pte(0); + int err = -EFAULT; + + if (uksm_test_exit(mm)) + goto out; + + if (!trylock_page(page)) + goto out; + + if (!PageAnon(page)) + goto out_unlock; + + if (PageTransCompound(page)) { + err = split_huge_page(page); + if (err) + goto out_unlock; + } + + if (write_protect_page(vma, page, &orig_pte, 0) == 0) { + if (is_page_full_zero(page)) + err = replace_page(vma, page, zero_page, orig_pte); + } + +out_unlock: + unlock_page(page); +out: + return err; +} + +/* + * cmp_and_merge_page() - first see if page can be merged into the stable + * tree; if not, compare hash to previous and if it's the same, see if page + * can be inserted into the unstable tree, or merged with a page already there + * and both transferred to the stable tree. + * + * @page: the page that we are searching identical page to. + * @rmap_item: the reverse mapping into the virtual address of this page + */ +static void cmp_and_merge_page(struct rmap_item *rmap_item, u32 hash) +{ + struct rmap_item *tree_rmap_item; + struct page *page; + struct page *kpage = NULL; + u32 hash_max; + int err; + unsigned int success1, success2; + struct stable_node *snode; + int cmp; + struct rb_node *parent = NULL, **new; + + remove_rmap_item_from_tree(rmap_item); + page = rmap_item->page; + + /* We first start with searching the page inside the stable tree */ + kpage = stable_tree_search(rmap_item, hash); + if (kpage) { + err = try_to_merge_with_uksm_page(rmap_item, kpage, + hash); + if (!err) { + /* + * The page was successfully merged, add + * its rmap_item to the stable tree. + * page lock is needed because it's + * racing with try_to_unmap_ksm(), etc. + */ + lock_page(kpage); + snode = page_stable_node(kpage); + stable_tree_append(rmap_item, snode, 1); + unlock_page(kpage); + put_page(kpage); + return; /* success */ + } + put_page(kpage); + + /* + * if it's a collision and it has been search in sub-rbtree + * (hash_max != 0), we want to abort, because if it is + * successfully merged in unstable tree, the collision trends to + * happen again. + */ + if (err == MERGE_ERR_COLLI && rmap_item->hash_max) + return; + } + + tree_rmap_item = + unstable_tree_search_insert(rmap_item, hash); + if (tree_rmap_item) { + err = try_to_merge_two_pages(rmap_item, tree_rmap_item, hash); + /* + * As soon as we merge this page, we want to remove the + * rmap_item of the page we have merged with from the unstable + * tree, and insert it instead as new node in the stable tree. + */ + if (!err) { + kpage = page; + remove_rmap_item_from_tree(tree_rmap_item); + lock_page(kpage); + snode = stable_tree_insert(&kpage, hash, + rmap_item, tree_rmap_item, + &success1, &success2); + + /* + * Do not log dedup for tree item, it's not counted as + * scanned in this round. + */ + if (success2) + stable_tree_append(tree_rmap_item, snode, 0); + + /* + * The order of these two stable append is important: + * we are scanning rmap_item. + */ + if (success1) + stable_tree_append(rmap_item, snode, 1); + + /* + * The original kpage may be unlocked inside + * stable_tree_insert() already. This page + * should be unlocked before doing + * break_cow(). + */ + unlock_page(kpage); + + if (!success1) + break_cow(rmap_item); + + if (!success2) + break_cow(tree_rmap_item); + + } else if (err == MERGE_ERR_COLLI) { + BUG_ON(tree_rmap_item->tree_node->count > 1); + + rmap_item_hash_max(tree_rmap_item, + tree_rmap_item->tree_node->hash); + + hash_max = rmap_item_hash_max(rmap_item, hash); + cmp = hash_cmp(hash_max, tree_rmap_item->hash_max); + parent = &tree_rmap_item->node; + if (cmp < 0) + new = &parent->rb_left; + else if (cmp > 0) + new = &parent->rb_right; + else + goto put_up_out; + + rmap_item->tree_node = tree_rmap_item->tree_node; + rmap_item->address |= UNSTABLE_FLAG; + rmap_item->hash_round = uksm_hash_round; + rb_link_node(&rmap_item->node, parent, new); + rb_insert_color(&rmap_item->node, + &tree_rmap_item->tree_node->sub_root); + rmap_item->tree_node->count++; + } else { + /* + * either one of the page has changed or they collide + * at the max hash, we consider them as ill items. + */ + remove_rmap_item_from_tree(tree_rmap_item); + } +put_up_out: + put_page(tree_rmap_item->page); + up_read(&tree_rmap_item->slot->vma->vm_mm->mmap_sem); + } +} + + + + +static inline unsigned long get_pool_index(struct vma_slot *slot, + unsigned long index) +{ + unsigned long pool_index; + + pool_index = (sizeof(struct rmap_list_entry *) * index) >> PAGE_SHIFT; + if (pool_index >= slot->pool_size) + BUG(); + return pool_index; +} + +static inline unsigned long index_page_offset(unsigned long index) +{ + return offset_in_page(sizeof(struct rmap_list_entry *) * index); +} + +static inline +struct rmap_list_entry *get_rmap_list_entry(struct vma_slot *slot, + unsigned long index, int need_alloc) +{ + unsigned long pool_index; + struct page *page; + void *addr; + + + pool_index = get_pool_index(slot, index); + if (!slot->rmap_list_pool[pool_index]) { + if (!need_alloc) + return NULL; + + page = alloc_page(GFP_KERNEL | __GFP_ZERO | __GFP_NOWARN); + if (!page) + return NULL; + + slot->rmap_list_pool[pool_index] = page; + } + + addr = kmap(slot->rmap_list_pool[pool_index]); + addr += index_page_offset(index); + + return addr; +} + +static inline void put_rmap_list_entry(struct vma_slot *slot, + unsigned long index) +{ + unsigned long pool_index; + + pool_index = get_pool_index(slot, index); + BUG_ON(!slot->rmap_list_pool[pool_index]); + kunmap(slot->rmap_list_pool[pool_index]); +} + +static inline int entry_is_new(struct rmap_list_entry *entry) +{ + return !entry->item; +} + +static inline unsigned long get_index_orig_addr(struct vma_slot *slot, + unsigned long index) +{ + return slot->vma->vm_start + (index << PAGE_SHIFT); +} + +static inline unsigned long get_entry_address(struct rmap_list_entry *entry) +{ + unsigned long addr; + + if (is_addr(entry->addr)) + addr = get_clean_addr(entry->addr); + else if (entry->item) + addr = get_rmap_addr(entry->item); + else + BUG(); + + return addr; +} + +static inline struct rmap_item *get_entry_item(struct rmap_list_entry *entry) +{ + if (is_addr(entry->addr)) + return NULL; + + return entry->item; +} + +static inline void inc_rmap_list_pool_count(struct vma_slot *slot, + unsigned long index) +{ + unsigned long pool_index; + + pool_index = get_pool_index(slot, index); + BUG_ON(!slot->rmap_list_pool[pool_index]); + slot->pool_counts[pool_index]++; +} + +static inline void dec_rmap_list_pool_count(struct vma_slot *slot, + unsigned long index) +{ + unsigned long pool_index; + + pool_index = get_pool_index(slot, index); + BUG_ON(!slot->rmap_list_pool[pool_index]); + BUG_ON(!slot->pool_counts[pool_index]); + slot->pool_counts[pool_index]--; +} + +static inline int entry_has_rmap(struct rmap_list_entry *entry) +{ + return !is_addr(entry->addr) && entry->item; +} + +static inline void swap_entries(struct rmap_list_entry *entry1, + unsigned long index1, + struct rmap_list_entry *entry2, + unsigned long index2) +{ + struct rmap_list_entry tmp; + + /* swapping two new entries is meaningless */ + BUG_ON(entry_is_new(entry1) && entry_is_new(entry2)); + + tmp = *entry1; + *entry1 = *entry2; + *entry2 = tmp; + + if (entry_has_rmap(entry1)) + entry1->item->entry_index = index1; + + if (entry_has_rmap(entry2)) + entry2->item->entry_index = index2; + + if (entry_has_rmap(entry1) && !entry_has_rmap(entry2)) { + inc_rmap_list_pool_count(entry1->item->slot, index1); + dec_rmap_list_pool_count(entry1->item->slot, index2); + } else if (!entry_has_rmap(entry1) && entry_has_rmap(entry2)) { + inc_rmap_list_pool_count(entry2->item->slot, index2); + dec_rmap_list_pool_count(entry2->item->slot, index1); + } +} + +static inline void free_entry_item(struct rmap_list_entry *entry) +{ + unsigned long index; + struct rmap_item *item; + + if (!is_addr(entry->addr)) { + BUG_ON(!entry->item); + item = entry->item; + entry->addr = get_rmap_addr(item); + set_is_addr(entry->addr); + index = item->entry_index; + remove_rmap_item_from_tree(item); + dec_rmap_list_pool_count(item->slot, index); + free_rmap_item(item); + } +} + +static inline int pool_entry_boundary(unsigned long index) +{ + unsigned long linear_addr; + + linear_addr = sizeof(struct rmap_list_entry *) * index; + return index && !offset_in_page(linear_addr); +} + +static inline void try_free_last_pool(struct vma_slot *slot, + unsigned long index) +{ + unsigned long pool_index; + + pool_index = get_pool_index(slot, index); + if (slot->rmap_list_pool[pool_index] && + !slot->pool_counts[pool_index]) { + __free_page(slot->rmap_list_pool[pool_index]); + slot->rmap_list_pool[pool_index] = NULL; + slot->flags |= UKSM_SLOT_NEED_SORT; + } + +} + +static inline unsigned long vma_item_index(struct vm_area_struct *vma, + struct rmap_item *item) +{ + return (get_rmap_addr(item) - vma->vm_start) >> PAGE_SHIFT; +} + +static int within_same_pool(struct vma_slot *slot, + unsigned long i, unsigned long j) +{ + unsigned long pool_i, pool_j; + + pool_i = get_pool_index(slot, i); + pool_j = get_pool_index(slot, j); + + return (pool_i == pool_j); +} + +static void sort_rmap_entry_list(struct vma_slot *slot) +{ + unsigned long i, j; + struct rmap_list_entry *entry, *swap_entry; + + entry = get_rmap_list_entry(slot, 0, 0); + for (i = 0; i < slot->pages; ) { + + if (!entry) + goto skip_whole_pool; + + if (entry_is_new(entry)) + goto next_entry; + + if (is_addr(entry->addr)) { + entry->addr = 0; + goto next_entry; + } + + j = vma_item_index(slot->vma, entry->item); + if (j == i) + goto next_entry; + + if (within_same_pool(slot, i, j)) + swap_entry = entry + j - i; + else + swap_entry = get_rmap_list_entry(slot, j, 1); + + swap_entries(entry, i, swap_entry, j); + if (!within_same_pool(slot, i, j)) + put_rmap_list_entry(slot, j); + continue; + +skip_whole_pool: + i += PAGE_SIZE / sizeof(*entry); + if (i < slot->pages) + entry = get_rmap_list_entry(slot, i, 0); + continue; + +next_entry: + if (i >= slot->pages - 1 || + !within_same_pool(slot, i, i + 1)) { + put_rmap_list_entry(slot, i); + if (i + 1 < slot->pages) + entry = get_rmap_list_entry(slot, i + 1, 0); + } else + entry++; + i++; + continue; + } + + /* free empty pool entries which contain no rmap_item */ + /* CAN be simplied to based on only pool_counts when bug freed !!!!! */ + for (i = 0; i < slot->pool_size; i++) { + unsigned char has_rmap; + void *addr; + + if (!slot->rmap_list_pool[i]) + continue; + + has_rmap = 0; + addr = kmap(slot->rmap_list_pool[i]); + BUG_ON(!addr); + for (j = 0; j < PAGE_SIZE / sizeof(*entry); j++) { + entry = (struct rmap_list_entry *)addr + j; + if (is_addr(entry->addr)) + continue; + if (!entry->item) + continue; + has_rmap = 1; + } + kunmap(slot->rmap_list_pool[i]); + if (!has_rmap) { + BUG_ON(slot->pool_counts[i]); + __free_page(slot->rmap_list_pool[i]); + slot->rmap_list_pool[i] = NULL; + } + } + + slot->flags &= ~UKSM_SLOT_NEED_SORT; +} + +/* + * vma_fully_scanned() - if all the pages in this slot have been scanned. + */ +static inline int vma_fully_scanned(struct vma_slot *slot) +{ + return slot->pages_scanned == slot->pages; +} + +/** + * get_next_rmap_item() - Get the next rmap_item in a vma_slot according to + * its random permutation. This function is embedded with the random + * permutation index management code. + */ +static struct rmap_item *get_next_rmap_item(struct vma_slot *slot, u32 *hash) +{ + unsigned long rand_range, addr, swap_index, scan_index; + struct rmap_item *item = NULL; + struct rmap_list_entry *scan_entry, *swap_entry = NULL; + struct page *page; + + scan_index = swap_index = slot->pages_scanned % slot->pages; + + if (pool_entry_boundary(scan_index)) + try_free_last_pool(slot, scan_index - 1); + + if (vma_fully_scanned(slot)) { + if (slot->flags & UKSM_SLOT_NEED_SORT) + slot->flags |= UKSM_SLOT_NEED_RERAND; + else + slot->flags &= ~UKSM_SLOT_NEED_RERAND; + if (slot->flags & UKSM_SLOT_NEED_SORT) + sort_rmap_entry_list(slot); + } + + scan_entry = get_rmap_list_entry(slot, scan_index, 1); + if (!scan_entry) + return NULL; + + if (entry_is_new(scan_entry)) { + scan_entry->addr = get_index_orig_addr(slot, scan_index); + set_is_addr(scan_entry->addr); + } + + if (slot->flags & UKSM_SLOT_NEED_RERAND) { + rand_range = slot->pages - scan_index; + BUG_ON(!rand_range); + swap_index = scan_index + (prandom_u32() % rand_range); + } + + if (swap_index != scan_index) { + swap_entry = get_rmap_list_entry(slot, swap_index, 1); + if (entry_is_new(swap_entry)) { + swap_entry->addr = get_index_orig_addr(slot, + swap_index); + set_is_addr(swap_entry->addr); + } + swap_entries(scan_entry, scan_index, swap_entry, swap_index); + } + + addr = get_entry_address(scan_entry); + item = get_entry_item(scan_entry); + BUG_ON(addr > slot->vma->vm_end || addr < slot->vma->vm_start); + + page = follow_page(slot->vma, addr, FOLL_GET); + if (IS_ERR_OR_NULL(page)) + goto nopage; + + if (!PageAnon(page)) + goto putpage; + + /*check is zero_page pfn or uksm_zero_page*/ + if ((page_to_pfn(page) == zero_pfn) + || (page_to_pfn(page) == uksm_zero_pfn)) + goto putpage; + + flush_anon_page(slot->vma, page, addr); + flush_dcache_page(page); + + + *hash = page_hash(page, hash_strength, 1); + inc_uksm_pages_scanned(); + /*if the page content all zero, re-map to zero-page*/ + if (find_zero_page_hash(hash_strength, *hash)) { + if (!cmp_and_merge_zero_page(slot->vma, page)) { + slot->pages_merged++; + + /* For full-zero pages, no need to create rmap item */ + goto putpage; + } else { + inc_rshash_neg(memcmp_cost / 2); + } + } + + if (!item) { + item = alloc_rmap_item(); + if (item) { + /* It has already been zeroed */ + item->slot = slot; + item->address = addr; + item->entry_index = scan_index; + scan_entry->item = item; + inc_rmap_list_pool_count(slot, scan_index); + } else + goto putpage; + } + + BUG_ON(item->slot != slot); + /* the page may have changed */ + item->page = page; + put_rmap_list_entry(slot, scan_index); + if (swap_entry) + put_rmap_list_entry(slot, swap_index); + return item; + +putpage: + put_page(page); + page = NULL; +nopage: + /* no page, store addr back and free rmap_item if possible */ + free_entry_item(scan_entry); + put_rmap_list_entry(slot, scan_index); + if (swap_entry) + put_rmap_list_entry(slot, swap_index); + return NULL; +} + +static inline int in_stable_tree(struct rmap_item *rmap_item) +{ + return rmap_item->address & STABLE_FLAG; +} + +/** + * scan_vma_one_page() - scan the next page in a vma_slot. Called with + * mmap_sem locked. + */ +static noinline void scan_vma_one_page(struct vma_slot *slot) +{ + u32 hash; + struct mm_struct *mm; + struct rmap_item *rmap_item = NULL; + struct vm_area_struct *vma = slot->vma; + + mm = vma->vm_mm; + BUG_ON(!mm); + BUG_ON(!slot); + + rmap_item = get_next_rmap_item(slot, &hash); + if (!rmap_item) + goto out1; + + if (PageKsm(rmap_item->page) && in_stable_tree(rmap_item)) + goto out2; + + cmp_and_merge_page(rmap_item, hash); +out2: + put_page(rmap_item->page); +out1: + slot->pages_scanned++; + slot->this_sampled++; + if (slot->fully_scanned_round != fully_scanned_round) + scanned_virtual_pages++; + + if (vma_fully_scanned(slot)) + slot->fully_scanned_round = fully_scanned_round; +} + +static inline unsigned long rung_get_pages(struct scan_rung *rung) +{ + struct slot_tree_node *node; + + if (!rung->vma_root.rnode) + return 0; + + node = container_of(rung->vma_root.rnode, struct slot_tree_node, snode); + + return node->size; +} + +#define RUNG_SAMPLED_MIN 3 + +static inline +void uksm_calc_rung_step(struct scan_rung *rung, + unsigned long page_time, unsigned long ratio) +{ + unsigned long sampled, pages; + + /* will be fully scanned ? */ + if (!rung->cover_msecs) { + rung->step = 1; + return; + } + + sampled = rung->cover_msecs * (NSEC_PER_MSEC / TIME_RATIO_SCALE) + * ratio / page_time; + + /* + * Before we finsish a scan round and expensive per-round jobs, + * we need to have a chance to estimate the per page time. So + * the sampled number can not be too small. + */ + if (sampled < RUNG_SAMPLED_MIN) + sampled = RUNG_SAMPLED_MIN; + + pages = rung_get_pages(rung); + if (likely(pages > sampled)) + rung->step = pages / sampled; + else + rung->step = 1; +} + +static inline int step_need_recalc(struct scan_rung *rung) +{ + unsigned long pages, stepmax; + + pages = rung_get_pages(rung); + stepmax = pages / RUNG_SAMPLED_MIN; + + return pages && (rung->step > pages || + (stepmax && rung->step > stepmax)); +} + +static inline +void reset_current_scan(struct scan_rung *rung, int finished, int step_recalc) +{ + struct vma_slot *slot; + + if (finished) + rung->flags |= UKSM_RUNG_ROUND_FINISHED; + + if (step_recalc || step_need_recalc(rung)) { + uksm_calc_rung_step(rung, uksm_ema_page_time, rung->cpu_ratio); + BUG_ON(step_need_recalc(rung)); + } + + slot_iter_index = prandom_u32() % rung->step; + BUG_ON(!rung->vma_root.rnode); + slot = sradix_tree_next(&rung->vma_root, NULL, 0, slot_iter); + BUG_ON(!slot); + + rung->current_scan = slot; + rung->current_offset = slot_iter_index; +} + +static inline struct sradix_tree_root *slot_get_root(struct vma_slot *slot) +{ + return &slot->rung->vma_root; +} + +/* + * return if resetted. + */ +static int advance_current_scan(struct scan_rung *rung) +{ + unsigned short n; + struct vma_slot *slot, *next = NULL; + + BUG_ON(!rung->vma_root.num); + + slot = rung->current_scan; + n = (slot->pages - rung->current_offset) % rung->step; + slot_iter_index = rung->step - n; + next = sradix_tree_next(&rung->vma_root, slot->snode, + slot->sindex, slot_iter); + + if (next) { + rung->current_offset = slot_iter_index; + rung->current_scan = next; + return 0; + } else { + reset_current_scan(rung, 1, 0); + return 1; + } +} + +static inline void rung_rm_slot(struct vma_slot *slot) +{ + struct scan_rung *rung = slot->rung; + struct sradix_tree_root *root; + + if (rung->current_scan == slot) + advance_current_scan(rung); + + root = slot_get_root(slot); + sradix_tree_delete_from_leaf(root, slot->snode, slot->sindex); + slot->snode = NULL; + if (step_need_recalc(rung)) { + uksm_calc_rung_step(rung, uksm_ema_page_time, rung->cpu_ratio); + BUG_ON(step_need_recalc(rung)); + } + + /* In case advance_current_scan loop back to this slot again */ + if (rung->vma_root.num && rung->current_scan == slot) + reset_current_scan(slot->rung, 1, 0); +} + +static inline void rung_add_new_slots(struct scan_rung *rung, + struct vma_slot **slots, unsigned long num) +{ + int err; + struct vma_slot *slot; + unsigned long i; + struct sradix_tree_root *root = &rung->vma_root; + + err = sradix_tree_enter(root, (void **)slots, num); + BUG_ON(err); + + for (i = 0; i < num; i++) { + slot = slots[i]; + slot->rung = rung; + BUG_ON(vma_fully_scanned(slot)); + } + + if (rung->vma_root.num == num) + reset_current_scan(rung, 0, 1); +} + +static inline int rung_add_one_slot(struct scan_rung *rung, + struct vma_slot *slot) +{ + int err; + + err = sradix_tree_enter(&rung->vma_root, (void **)&slot, 1); + if (err) + return err; + + slot->rung = rung; + if (rung->vma_root.num == 1) + reset_current_scan(rung, 0, 1); + + return 0; +} + +/* + * Return true if the slot is deleted from its rung. + */ +static inline int vma_rung_enter(struct vma_slot *slot, struct scan_rung *rung) +{ + struct scan_rung *old_rung = slot->rung; + int err; + + if (old_rung == rung) + return 0; + + rung_rm_slot(slot); + err = rung_add_one_slot(rung, slot); + if (err) { + err = rung_add_one_slot(old_rung, slot); + WARN_ON(err); /* OOPS, badly OOM, we lost this slot */ + } + + return 1; +} + +static inline int vma_rung_up(struct vma_slot *slot) +{ + struct scan_rung *rung; + + rung = slot->rung; + if (slot->rung != &uksm_scan_ladder[SCAN_LADDER_SIZE-1]) + rung++; + + return vma_rung_enter(slot, rung); +} + +static inline int vma_rung_down(struct vma_slot *slot) +{ + struct scan_rung *rung; + + rung = slot->rung; + if (slot->rung != &uksm_scan_ladder[0]) + rung--; + + return vma_rung_enter(slot, rung); +} + +/** + * cal_dedup_ratio() - Calculate the deduplication ratio for this slot. + */ +static unsigned long cal_dedup_ratio(struct vma_slot *slot) +{ + unsigned long ret; + unsigned long pages; + + pages = slot->this_sampled; + if (!pages) + return 0; + + BUG_ON(slot->pages_scanned == slot->last_scanned); + + ret = slot->pages_merged; + + /* Thrashing area filtering */ + if (ret && uksm_thrash_threshold) { + if (slot->pages_cowed * 100 / slot->pages_merged + > uksm_thrash_threshold) { + ret = 0; + } else { + ret = slot->pages_merged - slot->pages_cowed; + } + } + + return ret * 100 / pages; +} + +/** + * cal_dedup_ratio() - Calculate the deduplication ratio for this slot. + */ +static unsigned long cal_dedup_ratio_old(struct vma_slot *slot) +{ + unsigned long ret; + unsigned long pages; + + pages = slot->pages; + if (!pages) + return 0; + + ret = slot->pages_bemerged; + + /* Thrashing area filtering */ + if (ret && uksm_thrash_threshold) { + if (slot->pages_cowed * 100 / slot->pages_bemerged + > uksm_thrash_threshold) { + ret = 0; + } else { + ret = slot->pages_bemerged - slot->pages_cowed; + } + } + + return ret * 100 / pages; +} + +/** + * stable_node_reinsert() - When the hash_strength has been adjusted, the + * stable tree need to be restructured, this is the function re-inserting the + * stable node. + */ +static inline void stable_node_reinsert(struct stable_node *new_node, + struct page *page, + struct rb_root *root_treep, + struct list_head *tree_node_listp, + u32 hash) +{ + struct rb_node **new = &root_treep->rb_node; + struct rb_node *parent = NULL; + struct stable_node *stable_node; + struct tree_node *tree_node; + struct page *tree_page; + int cmp; + + while (*new) { + int cmp; + + tree_node = rb_entry(*new, struct tree_node, node); + + cmp = hash_cmp(hash, tree_node->hash); + + if (cmp < 0) { + parent = *new; + new = &parent->rb_left; + } else if (cmp > 0) { + parent = *new; + new = &parent->rb_right; + } else + break; + } + + if (*new) { + /* find a stable tree node with same first level hash value */ + stable_node_hash_max(new_node, page, hash); + if (tree_node->count == 1) { + stable_node = rb_entry(tree_node->sub_root.rb_node, + struct stable_node, node); + tree_page = get_uksm_page(stable_node, 1, 0); + if (tree_page) { + stable_node_hash_max(stable_node, + tree_page, hash); + put_page(tree_page); + + /* prepare for stable node insertion */ + + cmp = hash_cmp(new_node->hash_max, + stable_node->hash_max); + parent = &stable_node->node; + if (cmp < 0) + new = &parent->rb_left; + else if (cmp > 0) + new = &parent->rb_right; + else + goto failed; + + goto add_node; + } else { + /* the only stable_node deleted, the tree node + * was not deleted. + */ + goto tree_node_reuse; + } + } + + /* well, search the collision subtree */ + new = &tree_node->sub_root.rb_node; + parent = NULL; + BUG_ON(!*new); + while (*new) { + int cmp; + + stable_node = rb_entry(*new, struct stable_node, node); + + cmp = hash_cmp(new_node->hash_max, + stable_node->hash_max); + + if (cmp < 0) { + parent = *new; + new = &parent->rb_left; + } else if (cmp > 0) { + parent = *new; + new = &parent->rb_right; + } else { + /* oh, no, still a collision */ + goto failed; + } + } + + goto add_node; + } + + /* no tree node found */ + tree_node = alloc_tree_node(tree_node_listp); + if (!tree_node) { + pr_err("UKSM: memory allocation error!\n"); + goto failed; + } else { + tree_node->hash = hash; + rb_link_node(&tree_node->node, parent, new); + rb_insert_color(&tree_node->node, root_treep); + +tree_node_reuse: + /* prepare for stable node insertion */ + parent = NULL; + new = &tree_node->sub_root.rb_node; + } + +add_node: + rb_link_node(&new_node->node, parent, new); + rb_insert_color(&new_node->node, &tree_node->sub_root); + new_node->tree_node = tree_node; + tree_node->count++; + return; + +failed: + /* This can only happen when two nodes have collided + * in two levels. + */ + new_node->tree_node = NULL; + return; +} + +static inline void free_all_tree_nodes(struct list_head *list) +{ + struct tree_node *node, *tmp; + + list_for_each_entry_safe(node, tmp, list, all_list) { + free_tree_node(node); + } +} + +/** + * stable_tree_delta_hash() - Delta hash the stable tree from previous hash + * strength to the current hash_strength. It re-structures the hole tree. + */ +static inline void stable_tree_delta_hash(u32 prev_hash_strength) +{ + struct stable_node *node, *tmp; + struct rb_root *root_new_treep; + struct list_head *new_tree_node_listp; + + stable_tree_index = (stable_tree_index + 1) % 2; + root_new_treep = &root_stable_tree[stable_tree_index]; + new_tree_node_listp = &stable_tree_node_list[stable_tree_index]; + *root_new_treep = RB_ROOT; + BUG_ON(!list_empty(new_tree_node_listp)); + + /* + * we need to be safe, the node could be removed by get_uksm_page() + */ + list_for_each_entry_safe(node, tmp, &stable_node_list, all_list) { + void *addr; + struct page *node_page; + u32 hash; + + /* + * We are completely re-structuring the stable nodes to a new + * stable tree. We don't want to touch the old tree unlinks and + * old tree_nodes. The old tree_nodes will be freed at once. + */ + node_page = get_uksm_page(node, 0, 0); + if (!node_page) + continue; + + if (node->tree_node) { + hash = node->tree_node->hash; + + addr = kmap_atomic(node_page); + + hash = delta_hash(addr, prev_hash_strength, + hash_strength, hash); + kunmap_atomic(addr); + } else { + /* + *it was not inserted to rbtree due to collision in last + *round scan. + */ + hash = page_hash(node_page, hash_strength, 0); + } + + stable_node_reinsert(node, node_page, root_new_treep, + new_tree_node_listp, hash); + put_page(node_page); + } + + root_stable_treep = root_new_treep; + free_all_tree_nodes(stable_tree_node_listp); + BUG_ON(!list_empty(stable_tree_node_listp)); + stable_tree_node_listp = new_tree_node_listp; +} + +static inline void inc_hash_strength(unsigned long delta) +{ + hash_strength += 1 << delta; + if (hash_strength > HASH_STRENGTH_MAX) + hash_strength = HASH_STRENGTH_MAX; +} + +static inline void dec_hash_strength(unsigned long delta) +{ + unsigned long change = 1 << delta; + + if (hash_strength <= change + 1) + hash_strength = 1; + else + hash_strength -= change; +} + +static inline void inc_hash_strength_delta(void) +{ + hash_strength_delta++; + if (hash_strength_delta > HASH_STRENGTH_DELTA_MAX) + hash_strength_delta = HASH_STRENGTH_DELTA_MAX; +} + +static inline unsigned long get_current_neg_ratio(void) +{ + u64 pos = benefit.pos; + u64 neg = benefit.neg; + + if (!neg) + return 0; + + if (!pos || neg > pos) + return 100; + + if (neg > div64_u64(U64_MAX, 100)) + pos = div64_u64(pos, 100); + else + neg *= 100; + + return div64_u64(neg, pos); +} + +static inline unsigned long get_current_benefit(void) +{ + u64 pos = benefit.pos; + u64 neg = benefit.neg; + u64 scanned = benefit.scanned; + + if (neg > pos) + return 0; + + return div64_u64((pos - neg), scanned); +} + +static inline int judge_rshash_direction(void) +{ + u64 current_neg_ratio, stable_benefit; + u64 current_benefit, delta = 0; + int ret = STILL; + + /* + * Try to probe a value after the boot, and in case the system + * are still for a long time. + */ + if ((fully_scanned_round & 0xFFULL) == 10) { + ret = OBSCURE; + goto out; + } + + current_neg_ratio = get_current_neg_ratio(); + + if (current_neg_ratio == 0) { + rshash_neg_cont_zero++; + if (rshash_neg_cont_zero > 2) + return GO_DOWN; + else + return STILL; + } + rshash_neg_cont_zero = 0; + + if (current_neg_ratio > 90) { + ret = GO_UP; + goto out; + } + + current_benefit = get_current_benefit(); + stable_benefit = rshash_state.stable_benefit; + + if (!stable_benefit) { + ret = OBSCURE; + goto out; + } + + if (current_benefit > stable_benefit) + delta = current_benefit - stable_benefit; + else if (current_benefit < stable_benefit) + delta = stable_benefit - current_benefit; + + delta = div64_u64(100 * delta, stable_benefit); + + if (delta > 50) { + rshash_cont_obscure++; + if (rshash_cont_obscure > 2) + return OBSCURE; + else + return STILL; + } + +out: + rshash_cont_obscure = 0; + return ret; +} + +/** + * rshash_adjust() - The main function to control the random sampling state + * machine for hash strength adapting. + * + * return true if hash_strength has changed. + */ +static inline int rshash_adjust(void) +{ + unsigned long prev_hash_strength = hash_strength; + + if (!encode_benefit()) + return 0; + + switch (rshash_state.state) { + case RSHASH_STILL: + switch (judge_rshash_direction()) { + case GO_UP: + if (rshash_state.pre_direct == GO_DOWN) + hash_strength_delta = 0; + + inc_hash_strength(hash_strength_delta); + inc_hash_strength_delta(); + rshash_state.stable_benefit = get_current_benefit(); + rshash_state.pre_direct = GO_UP; + break; + + case GO_DOWN: + if (rshash_state.pre_direct == GO_UP) + hash_strength_delta = 0; + + dec_hash_strength(hash_strength_delta); + inc_hash_strength_delta(); + rshash_state.stable_benefit = get_current_benefit(); + rshash_state.pre_direct = GO_DOWN; + break; + + case OBSCURE: + rshash_state.stable_point = hash_strength; + rshash_state.turn_point_down = hash_strength; + rshash_state.turn_point_up = hash_strength; + rshash_state.turn_benefit_down = get_current_benefit(); + rshash_state.turn_benefit_up = get_current_benefit(); + rshash_state.lookup_window_index = 0; + rshash_state.state = RSHASH_TRYDOWN; + dec_hash_strength(hash_strength_delta); + inc_hash_strength_delta(); + break; + + case STILL: + break; + default: + BUG(); + } + break; + + case RSHASH_TRYDOWN: + if (rshash_state.lookup_window_index++ % 5 == 0) + rshash_state.below_count = 0; + + if (get_current_benefit() < rshash_state.stable_benefit) + rshash_state.below_count++; + else if (get_current_benefit() > + rshash_state.turn_benefit_down) { + rshash_state.turn_point_down = hash_strength; + rshash_state.turn_benefit_down = get_current_benefit(); + } + + if (rshash_state.below_count >= 3 || + judge_rshash_direction() == GO_UP || + hash_strength == 1) { + hash_strength = rshash_state.stable_point; + hash_strength_delta = 0; + inc_hash_strength(hash_strength_delta); + inc_hash_strength_delta(); + rshash_state.lookup_window_index = 0; + rshash_state.state = RSHASH_TRYUP; + hash_strength_delta = 0; + } else { + dec_hash_strength(hash_strength_delta); + inc_hash_strength_delta(); + } + break; + + case RSHASH_TRYUP: + if (rshash_state.lookup_window_index++ % 5 == 0) + rshash_state.below_count = 0; + + if (get_current_benefit() < rshash_state.turn_benefit_down) + rshash_state.below_count++; + else if (get_current_benefit() > rshash_state.turn_benefit_up) { + rshash_state.turn_point_up = hash_strength; + rshash_state.turn_benefit_up = get_current_benefit(); + } + + if (rshash_state.below_count >= 3 || + judge_rshash_direction() == GO_DOWN || + hash_strength == HASH_STRENGTH_MAX) { + hash_strength = rshash_state.turn_benefit_up > + rshash_state.turn_benefit_down ? + rshash_state.turn_point_up : + rshash_state.turn_point_down; + + rshash_state.state = RSHASH_PRE_STILL; + } else { + inc_hash_strength(hash_strength_delta); + inc_hash_strength_delta(); + } + + break; + + case RSHASH_NEW: + case RSHASH_PRE_STILL: + rshash_state.stable_benefit = get_current_benefit(); + rshash_state.state = RSHASH_STILL; + hash_strength_delta = 0; + break; + default: + BUG(); + } + + /* rshash_neg = rshash_pos = 0; */ + reset_benefit(); + + if (prev_hash_strength != hash_strength) + stable_tree_delta_hash(prev_hash_strength); + + return prev_hash_strength != hash_strength; +} + +/** + * round_update_ladder() - The main function to do update of all the + * adjustments whenever a scan round is finished. + */ +static noinline void round_update_ladder(void) +{ + int i; + unsigned long dedup; + struct vma_slot *slot, *tmp_slot; + + for (i = 0; i < SCAN_LADDER_SIZE; i++) + uksm_scan_ladder[i].flags &= ~UKSM_RUNG_ROUND_FINISHED; + + list_for_each_entry_safe(slot, tmp_slot, &vma_slot_dedup, dedup_list) { + + /* slot may be rung_rm_slot() when mm exits */ + if (slot->snode) { + dedup = cal_dedup_ratio_old(slot); + if (dedup && dedup >= uksm_abundant_threshold) + vma_rung_up(slot); + } + + slot->pages_bemerged = 0; + slot->pages_cowed = 0; + + list_del_init(&slot->dedup_list); + } +} + +static void uksm_del_vma_slot(struct vma_slot *slot) +{ + int i, j; + struct rmap_list_entry *entry; + + if (slot->snode) { + /* + * In case it just failed when entering the rung, it's not + * necessary. + */ + rung_rm_slot(slot); + } + + if (!list_empty(&slot->dedup_list)) + list_del(&slot->dedup_list); + + if (!slot->rmap_list_pool || !slot->pool_counts) { + /* In case it OOMed in uksm_vma_enter() */ + goto out; + } + + for (i = 0; i < slot->pool_size; i++) { + void *addr; + + if (!slot->rmap_list_pool[i]) + continue; + + addr = kmap(slot->rmap_list_pool[i]); + for (j = 0; j < PAGE_SIZE / sizeof(*entry); j++) { + entry = (struct rmap_list_entry *)addr + j; + if (is_addr(entry->addr)) + continue; + if (!entry->item) + continue; + + remove_rmap_item_from_tree(entry->item); + free_rmap_item(entry->item); + slot->pool_counts[i]--; + } + BUG_ON(slot->pool_counts[i]); + kunmap(slot->rmap_list_pool[i]); + __free_page(slot->rmap_list_pool[i]); + } + kfree(slot->rmap_list_pool); + kfree(slot->pool_counts); + +out: + slot->rung = NULL; + if (slot->flags & UKSM_SLOT_IN_UKSM) { + BUG_ON(uksm_pages_total < slot->pages); + uksm_pages_total -= slot->pages; + } + + if (slot->fully_scanned_round == fully_scanned_round) + scanned_virtual_pages -= slot->pages; + else + scanned_virtual_pages -= slot->pages_scanned; + free_vma_slot(slot); +} + + +#define SPIN_LOCK_PERIOD 32 +static struct vma_slot *cleanup_slots[SPIN_LOCK_PERIOD]; +static inline void cleanup_vma_slots(void) +{ + struct vma_slot *slot; + int i; + + i = 0; + spin_lock(&vma_slot_list_lock); + while (!list_empty(&vma_slot_del)) { + slot = list_entry(vma_slot_del.next, + struct vma_slot, slot_list); + list_del(&slot->slot_list); + cleanup_slots[i++] = slot; + if (i == SPIN_LOCK_PERIOD) { + spin_unlock(&vma_slot_list_lock); + while (--i >= 0) + uksm_del_vma_slot(cleanup_slots[i]); + i = 0; + spin_lock(&vma_slot_list_lock); + } + } + spin_unlock(&vma_slot_list_lock); + + while (--i >= 0) + uksm_del_vma_slot(cleanup_slots[i]); +} + +/* + * Expotional moving average formula + */ +static inline unsigned long ema(unsigned long curr, unsigned long last_ema) +{ + /* + * For a very high burst, even the ema cannot work well, a false very + * high per-page time estimation can result in feedback in very high + * overhead of context switch and rung update -- this will then lead + * to higher per-paper time, this may not converge. + * + * Instead, we try to approach this value in a binary manner. + */ + if (curr > last_ema * 10) + return last_ema * 2; + + return (EMA_ALPHA * curr + (100 - EMA_ALPHA) * last_ema) / 100; +} + +/* + * convert cpu ratio in 1/TIME_RATIO_SCALE configured by user to + * nanoseconds based on current uksm_sleep_jiffies. + */ +static inline unsigned long cpu_ratio_to_nsec(unsigned int ratio) +{ + return NSEC_PER_USEC * jiffies_to_usecs(uksm_sleep_jiffies) / + (TIME_RATIO_SCALE - ratio) * ratio; +} + + +static inline unsigned long rung_real_ratio(int cpu_time_ratio) +{ + unsigned long ret; + + BUG_ON(!cpu_time_ratio); + + if (cpu_time_ratio > 0) + ret = cpu_time_ratio; + else + ret = (unsigned long)(-cpu_time_ratio) * + uksm_max_cpu_percentage / 100UL; + + return ret ? ret : 1; +} + +static noinline void uksm_calc_scan_pages(void) +{ + struct scan_rung *ladder = uksm_scan_ladder; + unsigned long sleep_usecs, nsecs; + unsigned long ratio; + int i; + unsigned long per_page; + + if (uksm_ema_page_time > 100000 || + (((unsigned long) uksm_eval_round & (256UL - 1)) == 0UL)) + uksm_ema_page_time = UKSM_PAGE_TIME_DEFAULT; + + per_page = uksm_ema_page_time; + BUG_ON(!per_page); + + /* + * For every 8 eval round, we try to probe a uksm_sleep_jiffies value + * based on saved user input. + */ + if (((unsigned long) uksm_eval_round & (8UL - 1)) == 0UL) + uksm_sleep_jiffies = uksm_sleep_saved; + + /* We require a rung scan at least 1 page in a period. */ + nsecs = per_page; + ratio = rung_real_ratio(ladder[0].cpu_ratio); + if (cpu_ratio_to_nsec(ratio) < nsecs) { + sleep_usecs = nsecs * (TIME_RATIO_SCALE - ratio) / ratio + / NSEC_PER_USEC; + uksm_sleep_jiffies = usecs_to_jiffies(sleep_usecs) + 1; + } + + for (i = 0; i < SCAN_LADDER_SIZE; i++) { + ratio = rung_real_ratio(ladder[i].cpu_ratio); + ladder[i].pages_to_scan = cpu_ratio_to_nsec(ratio) / + per_page; + BUG_ON(!ladder[i].pages_to_scan); + uksm_calc_rung_step(&ladder[i], per_page, ratio); + } +} + +/* + * From the scan time of this round (ns) to next expected min sleep time + * (ms), be careful of the possible overflows. ratio is taken from + * rung_real_ratio() + */ +static inline +unsigned int scan_time_to_sleep(unsigned long long scan_time, unsigned long ratio) +{ + scan_time >>= 20; /* to msec level now */ + BUG_ON(scan_time > (ULONG_MAX / TIME_RATIO_SCALE)); + + return (unsigned int) ((unsigned long) scan_time * + (TIME_RATIO_SCALE - ratio) / ratio); +} + +#define __round_mask(x, y) ((__typeof__(x))((y)-1)) +#define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1) + +static void uksm_vma_enter(struct vma_slot **slots, unsigned long num) +{ + struct scan_rung *rung; + + rung = &uksm_scan_ladder[0]; + rung_add_new_slots(rung, slots, num); +} + +static struct vma_slot *batch_slots[SLOT_TREE_NODE_STORE_SIZE]; + +static void uksm_enter_all_slots(void) +{ + struct vma_slot *slot; + unsigned long index; + struct list_head empty_vma_list; + int i; + + i = 0; + index = 0; + INIT_LIST_HEAD(&empty_vma_list); + + spin_lock(&vma_slot_list_lock); + while (!list_empty(&vma_slot_new)) { + slot = list_entry(vma_slot_new.next, + struct vma_slot, slot_list); + + if (!slot->vma->anon_vma) { + list_move(&slot->slot_list, &empty_vma_list); + } else if (vma_can_enter(slot->vma)) { + batch_slots[index++] = slot; + list_del_init(&slot->slot_list); + } else { + list_move(&slot->slot_list, &vma_slot_noadd); + } + + if (++i == SPIN_LOCK_PERIOD || + (index && !(index % SLOT_TREE_NODE_STORE_SIZE))) { + spin_unlock(&vma_slot_list_lock); + + if (index && !(index % SLOT_TREE_NODE_STORE_SIZE)) { + uksm_vma_enter(batch_slots, index); + index = 0; + } + i = 0; + cond_resched(); + spin_lock(&vma_slot_list_lock); + } + } + + list_splice(&empty_vma_list, &vma_slot_new); + + spin_unlock(&vma_slot_list_lock); + + if (index) + uksm_vma_enter(batch_slots, index); + +} + +static inline int rung_round_finished(struct scan_rung *rung) +{ + return rung->flags & UKSM_RUNG_ROUND_FINISHED; +} + +static inline void judge_slot(struct vma_slot *slot) +{ + struct scan_rung *rung = slot->rung; + unsigned long dedup; + int deleted; + + dedup = cal_dedup_ratio(slot); + if (vma_fully_scanned(slot) && uksm_thrash_threshold) + deleted = vma_rung_enter(slot, &uksm_scan_ladder[0]); + else if (dedup && dedup >= uksm_abundant_threshold) + deleted = vma_rung_up(slot); + else + deleted = vma_rung_down(slot); + + slot->pages_merged = 0; + slot->pages_cowed = 0; + slot->this_sampled = 0; + + if (vma_fully_scanned(slot)) + slot->pages_scanned = 0; + + slot->last_scanned = slot->pages_scanned; + + /* If its deleted in above, then rung was already advanced. */ + if (!deleted) + advance_current_scan(rung); +} + + +static inline int hash_round_finished(void) +{ + if (scanned_virtual_pages > (uksm_pages_total >> 2)) { + scanned_virtual_pages = 0; + if (uksm_pages_scanned) + fully_scanned_round++; + + return 1; + } else { + return 0; + } +} + +#define UKSM_MMSEM_BATCH 5 +#define BUSY_RETRY 100 + +/** + * uksm_do_scan() - the main worker function. + */ +static noinline void uksm_do_scan(void) +{ + struct vma_slot *slot, *iter; + struct mm_struct *busy_mm; + unsigned char round_finished, all_rungs_emtpy; + int i, err, mmsem_batch; + unsigned long pcost; + long long delta_exec; + unsigned long vpages, max_cpu_ratio; + unsigned long long start_time, end_time, scan_time; + unsigned int expected_jiffies; + + might_sleep(); + + vpages = 0; + + start_time = task_sched_runtime(current); + max_cpu_ratio = 0; + mmsem_batch = 0; + + for (i = 0; i < SCAN_LADDER_SIZE;) { + struct scan_rung *rung = &uksm_scan_ladder[i]; + unsigned long ratio; + int busy_retry; + + if (!rung->pages_to_scan) { + i++; + continue; + } + + if (!rung->vma_root.num) { + rung->pages_to_scan = 0; + i++; + continue; + } + + ratio = rung_real_ratio(rung->cpu_ratio); + if (ratio > max_cpu_ratio) + max_cpu_ratio = ratio; + + busy_retry = BUSY_RETRY; + /* + * Do not consider rung_round_finished() here, just used up the + * rung->pages_to_scan quota. + */ + while (rung->pages_to_scan && rung->vma_root.num && + likely(!freezing(current))) { + int reset = 0; + + slot = rung->current_scan; + + BUG_ON(vma_fully_scanned(slot)); + + if (mmsem_batch) + err = 0; + else + err = try_down_read_slot_mmap_sem(slot); + + if (err == -ENOENT) { +rm_slot: + rung_rm_slot(slot); + continue; + } + + busy_mm = slot->mm; + + if (err == -EBUSY) { + /* skip other vmas on the same mm */ + do { + reset = advance_current_scan(rung); + iter = rung->current_scan; + busy_retry--; + if (iter->vma->vm_mm != busy_mm || + !busy_retry || reset) + break; + } while (1); + + if (iter->vma->vm_mm != busy_mm) { + continue; + } else { + /* scan round finsished */ + break; + } + } + + BUG_ON(!vma_can_enter(slot->vma)); + if (uksm_test_exit(slot->vma->vm_mm)) { + mmsem_batch = 0; + up_read(&slot->vma->vm_mm->mmap_sem); + goto rm_slot; + } + + if (mmsem_batch) + mmsem_batch--; + else + mmsem_batch = UKSM_MMSEM_BATCH; + + /* Ok, we have take the mmap_sem, ready to scan */ + scan_vma_one_page(slot); + rung->pages_to_scan--; + vpages++; + + if (rung->current_offset + rung->step > slot->pages - 1 + || vma_fully_scanned(slot)) { + up_read(&slot->vma->vm_mm->mmap_sem); + judge_slot(slot); + mmsem_batch = 0; + } else { + rung->current_offset += rung->step; + if (!mmsem_batch) + up_read(&slot->vma->vm_mm->mmap_sem); + } + + busy_retry = BUSY_RETRY; + cond_resched(); + } + + if (mmsem_batch) { + up_read(&slot->vma->vm_mm->mmap_sem); + mmsem_batch = 0; + } + + if (freezing(current)) + break; + + cond_resched(); + } + end_time = task_sched_runtime(current); + delta_exec = end_time - start_time; + + if (freezing(current)) + return; + + cleanup_vma_slots(); + uksm_enter_all_slots(); + + round_finished = 1; + all_rungs_emtpy = 1; + for (i = 0; i < SCAN_LADDER_SIZE; i++) { + struct scan_rung *rung = &uksm_scan_ladder[i]; + + if (rung->vma_root.num) { + all_rungs_emtpy = 0; + if (!rung_round_finished(rung)) + round_finished = 0; + } + } + + if (all_rungs_emtpy) + round_finished = 0; + + if (round_finished) { + round_update_ladder(); + uksm_eval_round++; + + if (hash_round_finished() && rshash_adjust()) { + /* Reset the unstable root iff hash strength changed */ + uksm_hash_round++; + root_unstable_tree = RB_ROOT; + free_all_tree_nodes(&unstable_tree_node_list); + } + + /* + * A number of pages can hang around indefinitely on per-cpu + * pagevecs, raised page count preventing write_protect_page + * from merging them. Though it doesn't really matter much, + * it is puzzling to see some stuck in pages_volatile until + * other activity jostles them out, and they also prevented + * LTP's KSM test from succeeding deterministically; so drain + * them here (here rather than on entry to uksm_do_scan(), + * so we don't IPI too often when pages_to_scan is set low). + */ + lru_add_drain_all(); + } + + + if (vpages && delta_exec > 0) { + pcost = (unsigned long) delta_exec / vpages; + if (likely(uksm_ema_page_time)) + uksm_ema_page_time = ema(pcost, uksm_ema_page_time); + else + uksm_ema_page_time = pcost; + } + + uksm_calc_scan_pages(); + uksm_sleep_real = uksm_sleep_jiffies; + /* in case of radical cpu bursts, apply the upper bound */ + end_time = task_sched_runtime(current); + if (max_cpu_ratio && end_time > start_time) { + scan_time = end_time - start_time; + expected_jiffies = msecs_to_jiffies( + scan_time_to_sleep(scan_time, max_cpu_ratio)); + + if (expected_jiffies > uksm_sleep_real) + uksm_sleep_real = expected_jiffies; + + /* We have a 1 second up bound for responsiveness. */ + if (jiffies_to_msecs(uksm_sleep_real) > MSEC_PER_SEC) + uksm_sleep_real = msecs_to_jiffies(1000); + } + + return; +} + +static int ksmd_should_run(void) +{ + return uksm_run & UKSM_RUN_MERGE; +} + +static int uksm_scan_thread(void *nothing) +{ + set_freezable(); + set_user_nice(current, 5); + + while (!kthread_should_stop()) { + mutex_lock(&uksm_thread_mutex); + if (ksmd_should_run()) + uksm_do_scan(); + mutex_unlock(&uksm_thread_mutex); + + try_to_freeze(); + + if (ksmd_should_run()) { + schedule_timeout_interruptible(uksm_sleep_real); + uksm_sleep_times++; + } else { + wait_event_freezable(uksm_thread_wait, + ksmd_should_run() || kthread_should_stop()); + } + } + return 0; +} + +void rmap_walk_ksm(struct page *page, struct rmap_walk_control *rwc) +{ + struct stable_node *stable_node; + struct node_vma *node_vma; + struct rmap_item *rmap_item; + int search_new_forks = 0; + unsigned long address; + + VM_BUG_ON_PAGE(!PageKsm(page), page); + VM_BUG_ON_PAGE(!PageLocked(page), page); + + stable_node = page_stable_node(page); + if (!stable_node) + return; +again: + hlist_for_each_entry(node_vma, &stable_node->hlist, hlist) { + hlist_for_each_entry(rmap_item, &node_vma->rmap_hlist, hlist) { + struct anon_vma *anon_vma = rmap_item->anon_vma; + struct anon_vma_chain *vmac; + struct vm_area_struct *vma; + + cond_resched(); + anon_vma_lock_read(anon_vma); + anon_vma_interval_tree_foreach(vmac, &anon_vma->rb_root, + 0, ULONG_MAX) { + cond_resched(); + vma = vmac->vma; + address = get_rmap_addr(rmap_item); + + if (address < vma->vm_start || + address >= vma->vm_end) + continue; + + if ((rmap_item->slot->vma == vma) == + search_new_forks) + continue; + + if (rwc->invalid_vma && rwc->invalid_vma(vma, rwc->arg)) + continue; + + if (!rwc->rmap_one(page, vma, address, rwc->arg)) { + anon_vma_unlock_read(anon_vma); + return; + } + + if (rwc->done && rwc->done(page)) { + anon_vma_unlock_read(anon_vma); + return; + } + } + anon_vma_unlock_read(anon_vma); + } + } + if (!search_new_forks++) + goto again; +} + +#ifdef CONFIG_MIGRATION +/* Common ksm interface but may be specific to uksm */ +void ksm_migrate_page(struct page *newpage, struct page *oldpage) +{ + struct stable_node *stable_node; + + VM_BUG_ON_PAGE(!PageLocked(oldpage), oldpage); + VM_BUG_ON_PAGE(!PageLocked(newpage), newpage); + VM_BUG_ON(newpage->mapping != oldpage->mapping); + + stable_node = page_stable_node(newpage); + if (stable_node) { + VM_BUG_ON(stable_node->kpfn != page_to_pfn(oldpage)); + stable_node->kpfn = page_to_pfn(newpage); + /* + * newpage->mapping was set in advance; now we need smp_wmb() + * to make sure that the new stable_node->kpfn is visible + * to get_ksm_page() before it can see that oldpage->mapping + * has gone stale (or that PageSwapCache has been cleared). + */ + smp_wmb(); + set_page_stable_node(oldpage, NULL); + } +} +#endif /* CONFIG_MIGRATION */ + +#ifdef CONFIG_MEMORY_HOTREMOVE +static struct stable_node *uksm_check_stable_tree(unsigned long start_pfn, + unsigned long end_pfn) +{ + struct rb_node *node; + + for (node = rb_first(root_stable_treep); node; node = rb_next(node)) { + struct stable_node *stable_node; + + stable_node = rb_entry(node, struct stable_node, node); + if (stable_node->kpfn >= start_pfn && + stable_node->kpfn < end_pfn) + return stable_node; + } + return NULL; +} + +static int uksm_memory_callback(struct notifier_block *self, + unsigned long action, void *arg) +{ + struct memory_notify *mn = arg; + struct stable_node *stable_node; + + switch (action) { + case MEM_GOING_OFFLINE: + /* + * Keep it very simple for now: just lock out ksmd and + * MADV_UNMERGEABLE while any memory is going offline. + * mutex_lock_nested() is necessary because lockdep was alarmed + * that here we take uksm_thread_mutex inside notifier chain + * mutex, and later take notifier chain mutex inside + * uksm_thread_mutex to unlock it. But that's safe because both + * are inside mem_hotplug_mutex. + */ + mutex_lock_nested(&uksm_thread_mutex, SINGLE_DEPTH_NESTING); + break; + + case MEM_OFFLINE: + /* + * Most of the work is done by page migration; but there might + * be a few stable_nodes left over, still pointing to struct + * pages which have been offlined: prune those from the tree. + */ + while ((stable_node = uksm_check_stable_tree(mn->start_pfn, + mn->start_pfn + mn->nr_pages)) != NULL) + remove_node_from_stable_tree(stable_node, 1, 1); + /* fallthrough */ + + case MEM_CANCEL_OFFLINE: + mutex_unlock(&uksm_thread_mutex); + break; + } + return NOTIFY_OK; +} +#endif /* CONFIG_MEMORY_HOTREMOVE */ + +#ifdef CONFIG_SYSFS +/* + * This all compiles without CONFIG_SYSFS, but is a waste of space. + */ + +#define UKSM_ATTR_RO(_name) \ + static struct kobj_attribute _name##_attr = __ATTR_RO(_name) +#define UKSM_ATTR(_name) \ + static struct kobj_attribute _name##_attr = \ + __ATTR(_name, 0644, _name##_show, _name##_store) + +static ssize_t max_cpu_percentage_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + return sprintf(buf, "%u\n", uksm_max_cpu_percentage); +} + +static ssize_t max_cpu_percentage_store(struct kobject *kobj, + struct kobj_attribute *attr, + const char *buf, size_t count) +{ + unsigned long max_cpu_percentage; + int err; + + err = kstrtoul(buf, 10, &max_cpu_percentage); + if (err || max_cpu_percentage > 100) + return -EINVAL; + + if (max_cpu_percentage == 100) + max_cpu_percentage = 99; + else if (max_cpu_percentage < 10) + max_cpu_percentage = 10; + + uksm_max_cpu_percentage = max_cpu_percentage; + + return count; +} +UKSM_ATTR(max_cpu_percentage); + +static ssize_t sleep_millisecs_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + return sprintf(buf, "%u\n", jiffies_to_msecs(uksm_sleep_jiffies)); +} + +static ssize_t sleep_millisecs_store(struct kobject *kobj, + struct kobj_attribute *attr, + const char *buf, size_t count) +{ + unsigned long msecs; + int err; + + err = kstrtoul(buf, 10, &msecs); + if (err || msecs > MSEC_PER_SEC) + return -EINVAL; + + uksm_sleep_jiffies = msecs_to_jiffies(msecs); + uksm_sleep_saved = uksm_sleep_jiffies; + + return count; +} +UKSM_ATTR(sleep_millisecs); + + +static ssize_t cpu_governor_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + int n = sizeof(uksm_cpu_governor_str) / sizeof(char *); + int i; + + buf[0] = '\0'; + for (i = 0; i < n ; i++) { + if (uksm_cpu_governor == i) + strcat(buf, "["); + + strcat(buf, uksm_cpu_governor_str[i]); + + if (uksm_cpu_governor == i) + strcat(buf, "]"); + + strcat(buf, " "); + } + strcat(buf, "\n"); + + return strlen(buf); +} + +static inline void init_performance_values(void) +{ + int i; + struct scan_rung *rung; + struct uksm_cpu_preset_s *preset = uksm_cpu_preset + uksm_cpu_governor; + + + for (i = 0; i < SCAN_LADDER_SIZE; i++) { + rung = uksm_scan_ladder + i; + rung->cpu_ratio = preset->cpu_ratio[i]; + rung->cover_msecs = preset->cover_msecs[i]; + } + + uksm_max_cpu_percentage = preset->max_cpu; +} + +static ssize_t cpu_governor_store(struct kobject *kobj, + struct kobj_attribute *attr, + const char *buf, size_t count) +{ + int n = sizeof(uksm_cpu_governor_str) / sizeof(char *); + + for (n--; n >= 0 ; n--) { + if (!strncmp(buf, uksm_cpu_governor_str[n], + strlen(uksm_cpu_governor_str[n]))) + break; + } + + if (n < 0) + return -EINVAL; + else + uksm_cpu_governor = n; + + init_performance_values(); + + return count; +} +UKSM_ATTR(cpu_governor); + +static ssize_t run_show(struct kobject *kobj, struct kobj_attribute *attr, + char *buf) +{ + return sprintf(buf, "%u\n", uksm_run); +} + +static ssize_t run_store(struct kobject *kobj, struct kobj_attribute *attr, + const char *buf, size_t count) +{ + int err; + unsigned long flags; + + err = kstrtoul(buf, 10, &flags); + if (err || flags > UINT_MAX) + return -EINVAL; + if (flags > UKSM_RUN_MERGE) + return -EINVAL; + + mutex_lock(&uksm_thread_mutex); + if (uksm_run != flags) + uksm_run = flags; + mutex_unlock(&uksm_thread_mutex); + + if (flags & UKSM_RUN_MERGE) + wake_up_interruptible(&uksm_thread_wait); + + return count; +} +UKSM_ATTR(run); + +static ssize_t abundant_threshold_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + return sprintf(buf, "%u\n", uksm_abundant_threshold); +} + +static ssize_t abundant_threshold_store(struct kobject *kobj, + struct kobj_attribute *attr, + const char *buf, size_t count) +{ + int err; + unsigned long flags; + + err = kstrtoul(buf, 10, &flags); + if (err || flags > 99) + return -EINVAL; + + uksm_abundant_threshold = flags; + + return count; +} +UKSM_ATTR(abundant_threshold); + +static ssize_t thrash_threshold_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + return sprintf(buf, "%u\n", uksm_thrash_threshold); +} + +static ssize_t thrash_threshold_store(struct kobject *kobj, + struct kobj_attribute *attr, + const char *buf, size_t count) +{ + int err; + unsigned long flags; + + err = kstrtoul(buf, 10, &flags); + if (err || flags > 99) + return -EINVAL; + + uksm_thrash_threshold = flags; + + return count; +} +UKSM_ATTR(thrash_threshold); + +static ssize_t cpu_ratios_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + int i, size; + struct scan_rung *rung; + char *p = buf; + + for (i = 0; i < SCAN_LADDER_SIZE; i++) { + rung = &uksm_scan_ladder[i]; + + if (rung->cpu_ratio > 0) + size = sprintf(p, "%d ", rung->cpu_ratio); + else + size = sprintf(p, "MAX/%d ", + TIME_RATIO_SCALE / -rung->cpu_ratio); + + p += size; + } + + *p++ = '\n'; + *p = '\0'; + + return p - buf; +} + +static ssize_t cpu_ratios_store(struct kobject *kobj, + struct kobj_attribute *attr, + const char *buf, size_t count) +{ + int i, cpuratios[SCAN_LADDER_SIZE], err; + unsigned long value; + struct scan_rung *rung; + char *p, *end = NULL; + + p = kzalloc(count, GFP_KERNEL); + if (!p) + return -ENOMEM; + + memcpy(p, buf, count); + + for (i = 0; i < SCAN_LADDER_SIZE; i++) { + if (i != SCAN_LADDER_SIZE - 1) { + end = strchr(p, ' '); + if (!end) + return -EINVAL; + + *end = '\0'; + } + + if (strstr(p, "MAX/")) { + p = strchr(p, '/') + 1; + err = kstrtoul(p, 10, &value); + if (err || value > TIME_RATIO_SCALE || !value) + return -EINVAL; + + cpuratios[i] = -(int) (TIME_RATIO_SCALE / value); + } else { + err = kstrtoul(p, 10, &value); + if (err || value > TIME_RATIO_SCALE || !value) + return -EINVAL; + + cpuratios[i] = value; + } + + p = end + 1; + } + + for (i = 0; i < SCAN_LADDER_SIZE; i++) { + rung = &uksm_scan_ladder[i]; + + rung->cpu_ratio = cpuratios[i]; + } + + return count; +} +UKSM_ATTR(cpu_ratios); + +static ssize_t eval_intervals_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + int i, size; + struct scan_rung *rung; + char *p = buf; + + for (i = 0; i < SCAN_LADDER_SIZE; i++) { + rung = &uksm_scan_ladder[i]; + size = sprintf(p, "%u ", rung->cover_msecs); + p += size; + } + + *p++ = '\n'; + *p = '\0'; + + return p - buf; +} + +static ssize_t eval_intervals_store(struct kobject *kobj, + struct kobj_attribute *attr, + const char *buf, size_t count) +{ + int i, err; + unsigned long values[SCAN_LADDER_SIZE]; + struct scan_rung *rung; + char *p, *end = NULL; + ssize_t ret = count; + + p = kzalloc(count + 2, GFP_KERNEL); + if (!p) + return -ENOMEM; + + memcpy(p, buf, count); + + for (i = 0; i < SCAN_LADDER_SIZE; i++) { + if (i != SCAN_LADDER_SIZE - 1) { + end = strchr(p, ' '); + if (!end) { + ret = -EINVAL; + goto out; + } + + *end = '\0'; + } + + err = kstrtoul(p, 10, &values[i]); + if (err) { + ret = -EINVAL; + goto out; + } + + p = end + 1; + } + + for (i = 0; i < SCAN_LADDER_SIZE; i++) { + rung = &uksm_scan_ladder[i]; + + rung->cover_msecs = values[i]; + } + +out: + kfree(p); + return ret; +} +UKSM_ATTR(eval_intervals); + +static ssize_t ema_per_page_time_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + return sprintf(buf, "%lu\n", uksm_ema_page_time); +} +UKSM_ATTR_RO(ema_per_page_time); + +static ssize_t pages_shared_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + return sprintf(buf, "%lu\n", uksm_pages_shared); +} +UKSM_ATTR_RO(pages_shared); + +static ssize_t pages_sharing_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + return sprintf(buf, "%lu\n", uksm_pages_sharing); +} +UKSM_ATTR_RO(pages_sharing); + +static ssize_t pages_unshared_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + return sprintf(buf, "%lu\n", uksm_pages_unshared); +} +UKSM_ATTR_RO(pages_unshared); + +static ssize_t full_scans_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + return sprintf(buf, "%llu\n", fully_scanned_round); +} +UKSM_ATTR_RO(full_scans); + +static ssize_t pages_scanned_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + unsigned long base = 0; + u64 delta, ret; + + if (pages_scanned_stored) { + base = pages_scanned_base; + ret = pages_scanned_stored; + delta = uksm_pages_scanned >> base; + if (CAN_OVERFLOW_U64(ret, delta)) { + ret >>= 1; + delta >>= 1; + base++; + ret += delta; + } + } else { + ret = uksm_pages_scanned; + } + + while (ret > ULONG_MAX) { + ret >>= 1; + base++; + } + + if (base) + return sprintf(buf, "%lu * 2^%lu\n", (unsigned long)ret, base); + else + return sprintf(buf, "%lu\n", (unsigned long)ret); +} +UKSM_ATTR_RO(pages_scanned); + +static ssize_t hash_strength_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + return sprintf(buf, "%lu\n", hash_strength); +} +UKSM_ATTR_RO(hash_strength); + +static ssize_t sleep_times_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + return sprintf(buf, "%llu\n", uksm_sleep_times); +} +UKSM_ATTR_RO(sleep_times); + + +static struct attribute *uksm_attrs[] = { + &max_cpu_percentage_attr.attr, + &sleep_millisecs_attr.attr, + &cpu_governor_attr.attr, + &run_attr.attr, + &ema_per_page_time_attr.attr, + &pages_shared_attr.attr, + &pages_sharing_attr.attr, + &pages_unshared_attr.attr, + &full_scans_attr.attr, + &pages_scanned_attr.attr, + &hash_strength_attr.attr, + &sleep_times_attr.attr, + &thrash_threshold_attr.attr, + &abundant_threshold_attr.attr, + &cpu_ratios_attr.attr, + &eval_intervals_attr.attr, + NULL, +}; + +static struct attribute_group uksm_attr_group = { + .attrs = uksm_attrs, + .name = "uksm", +}; +#endif /* CONFIG_SYSFS */ + +static inline void init_scan_ladder(void) +{ + int i; + struct scan_rung *rung; + + for (i = 0; i < SCAN_LADDER_SIZE; i++) { + rung = uksm_scan_ladder + i; + slot_tree_init_root(&rung->vma_root); + } + + init_performance_values(); + uksm_calc_scan_pages(); +} + +static inline int cal_positive_negative_costs(void) +{ + struct page *p1, *p2; + unsigned char *addr1, *addr2; + unsigned long i, time_start, hash_cost; + unsigned long loopnum = 0; + + /*IMPORTANT: volatile is needed to prevent over-optimization by gcc. */ + volatile u32 hash; + volatile int ret; + + p1 = alloc_page(GFP_KERNEL); + if (!p1) + return -ENOMEM; + + p2 = alloc_page(GFP_KERNEL); + if (!p2) + return -ENOMEM; + + addr1 = kmap_atomic(p1); + addr2 = kmap_atomic(p2); + memset(addr1, prandom_u32(), PAGE_SIZE); + memcpy(addr2, addr1, PAGE_SIZE); + + /* make sure that the two pages differ in last byte */ + addr2[PAGE_SIZE-1] = ~addr2[PAGE_SIZE-1]; + kunmap_atomic(addr2); + kunmap_atomic(addr1); + + time_start = jiffies; + while (jiffies - time_start < 100) { + for (i = 0; i < 100; i++) + hash = page_hash(p1, HASH_STRENGTH_FULL, 0); + loopnum += 100; + } + hash_cost = (jiffies - time_start); + + time_start = jiffies; + for (i = 0; i < loopnum; i++) + ret = pages_identical(p1, p2); + memcmp_cost = HASH_STRENGTH_FULL * (jiffies - time_start); + memcmp_cost /= hash_cost; + pr_info("UKSM: relative memcmp_cost = %lu " + "hash=%u cmp_ret=%d.\n", + memcmp_cost, hash, ret); + + __free_page(p1); + __free_page(p2); + return 0; +} + +static int init_zeropage_hash_table(void) +{ + struct page *page; + char *addr; + int i; + + page = alloc_page(GFP_KERNEL); + if (!page) + return -ENOMEM; + + addr = kmap_atomic(page); + memset(addr, 0, PAGE_SIZE); + kunmap_atomic(addr); + + zero_hash_table = kmalloc_array(HASH_STRENGTH_MAX, sizeof(u32), + GFP_KERNEL); + if (!zero_hash_table) + return -ENOMEM; + + for (i = 0; i < HASH_STRENGTH_MAX; i++) + zero_hash_table[i] = page_hash(page, i, 0); + + __free_page(page); + + return 0; +} + +static inline int init_random_sampling(void) +{ + unsigned long i; + + random_nums = kmalloc(PAGE_SIZE, GFP_KERNEL); + if (!random_nums) + return -ENOMEM; + + for (i = 0; i < HASH_STRENGTH_FULL; i++) + random_nums[i] = i; + + for (i = 0; i < HASH_STRENGTH_FULL; i++) { + unsigned long rand_range, swap_index, tmp; + + rand_range = HASH_STRENGTH_FULL - i; + swap_index = i + prandom_u32() % rand_range; + tmp = random_nums[i]; + random_nums[i] = random_nums[swap_index]; + random_nums[swap_index] = tmp; + } + + rshash_state.state = RSHASH_NEW; + rshash_state.below_count = 0; + rshash_state.lookup_window_index = 0; + + return cal_positive_negative_costs(); +} + +static int __init uksm_slab_init(void) +{ + rmap_item_cache = UKSM_KMEM_CACHE(rmap_item, 0); + if (!rmap_item_cache) + goto out; + + stable_node_cache = UKSM_KMEM_CACHE(stable_node, 0); + if (!stable_node_cache) + goto out_free1; + + node_vma_cache = UKSM_KMEM_CACHE(node_vma, 0); + if (!node_vma_cache) + goto out_free2; + + vma_slot_cache = UKSM_KMEM_CACHE(vma_slot, 0); + if (!vma_slot_cache) + goto out_free3; + + tree_node_cache = UKSM_KMEM_CACHE(tree_node, 0); + if (!tree_node_cache) + goto out_free4; + + return 0; + +out_free4: + kmem_cache_destroy(vma_slot_cache); +out_free3: + kmem_cache_destroy(node_vma_cache); +out_free2: + kmem_cache_destroy(stable_node_cache); +out_free1: + kmem_cache_destroy(rmap_item_cache); +out: + return -ENOMEM; +} + +static void __init uksm_slab_free(void) +{ + kmem_cache_destroy(stable_node_cache); + kmem_cache_destroy(rmap_item_cache); + kmem_cache_destroy(node_vma_cache); + kmem_cache_destroy(vma_slot_cache); + kmem_cache_destroy(tree_node_cache); +} + +/* Common interface to ksm, different to it. */ +int ksm_madvise(struct vm_area_struct *vma, unsigned long start, + unsigned long end, int advice, unsigned long *vm_flags) +{ + int err; + + switch (advice) { + case MADV_MERGEABLE: + return 0; /* just ignore the advice */ + + case MADV_UNMERGEABLE: + if (!(*vm_flags & VM_MERGEABLE) || !uksm_flags_can_scan(*vm_flags)) + return 0; /* just ignore the advice */ + + if (vma->anon_vma) { + err = unmerge_uksm_pages(vma, start, end); + if (err) + return err; + } + + uksm_remove_vma(vma); + *vm_flags &= ~VM_MERGEABLE; + break; + } + + return 0; +} + +/* Common interface to ksm, actually the same. */ +struct page *ksm_might_need_to_copy(struct page *page, + struct vm_area_struct *vma, unsigned long address) +{ + struct anon_vma *anon_vma = page_anon_vma(page); + struct page *new_page; + + if (PageKsm(page)) { + if (page_stable_node(page)) + return page; /* no need to copy it */ + } else if (!anon_vma) { + return page; /* no need to copy it */ + } else if (anon_vma->root == vma->anon_vma->root && + page->index == linear_page_index(vma, address)) { + return page; /* still no need to copy it */ + } + if (!PageUptodate(page)) + return page; /* let do_swap_page report the error */ + + new_page = alloc_page_vma(GFP_HIGHUSER_MOVABLE, vma, address); + if (new_page) { + copy_user_highpage(new_page, page, address, vma); + + SetPageDirty(new_page); + __SetPageUptodate(new_page); + __SetPageLocked(new_page); + } + + return new_page; +} + +static int __init uksm_init(void) +{ + struct task_struct *uksm_thread; + int err; + + uksm_sleep_jiffies = msecs_to_jiffies(100); + uksm_sleep_saved = uksm_sleep_jiffies; + + slot_tree_init(); + init_scan_ladder(); + + + err = init_random_sampling(); + if (err) + goto out_free2; + + err = uksm_slab_init(); + if (err) + goto out_free1; + + err = init_zeropage_hash_table(); + if (err) + goto out_free0; + + uksm_thread = kthread_run(uksm_scan_thread, NULL, "uksmd"); + if (IS_ERR(uksm_thread)) { + pr_err("uksm: creating kthread failed\n"); + err = PTR_ERR(uksm_thread); + goto out_free; + } + +#ifdef CONFIG_SYSFS + err = sysfs_create_group(mm_kobj, &uksm_attr_group); + if (err) { + pr_err("uksm: register sysfs failed\n"); + kthread_stop(uksm_thread); + goto out_free; + } +#else + uksm_run = UKSM_RUN_MERGE; /* no way for user to start it */ + +#endif /* CONFIG_SYSFS */ + +#ifdef CONFIG_MEMORY_HOTREMOVE + /* + * Choose a high priority since the callback takes uksm_thread_mutex: + * later callbacks could only be taking locks which nest within that. + */ + hotplug_memory_notifier(uksm_memory_callback, 100); +#endif + return 0; + +out_free: + kfree(zero_hash_table); +out_free0: + uksm_slab_free(); +out_free1: + kfree(random_nums); +out_free2: + kfree(uksm_scan_ladder); + return err; +} + +#ifdef MODULE +subsys_initcall(ksm_init); +#else +late_initcall(uksm_init); +#endif + diff --git a/mm/vmstat.c b/mm/vmstat.c index 8ba0870ecdd..b977e00d963 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1163,6 +1163,9 @@ const char * const vmstat_text[] = { "nr_written", "", /* nr_indirectly_reclaimable */ +#ifdef CONFIG_UKSM + "nr_uksm_zero_pages", +#endif /* enum writeback_stat_item counters */ "nr_dirty_threshold", "nr_dirty_background_threshold", diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig index 80dad301361..42b7fa7d01f 100644 --- a/net/ipv4/Kconfig +++ b/net/ipv4/Kconfig @@ -702,6 +702,9 @@ choice config DEFAULT_VEGAS bool "Vegas" if TCP_CONG_VEGAS=y + config DEFAULT_YEAH + bool "YeAH" if TCP_CONG_YEAH=y + config DEFAULT_VENO bool "Veno" if TCP_CONG_VENO=y @@ -735,6 +738,7 @@ config DEFAULT_TCP_CONG default "htcp" if DEFAULT_HTCP default "hybla" if DEFAULT_HYBLA default "vegas" if DEFAULT_VEGAS + default "yeah" if DEFAULT_YEAH default "westwood" if DEFAULT_WESTWOOD default "veno" if DEFAULT_VENO default "reno" if DEFAULT_RENO diff --git a/scripts/mkcompile_h b/scripts/mkcompile_h index 87f1fc9801d..52d203a77af 100755 --- a/scripts/mkcompile_h +++ b/scripts/mkcompile_h @@ -50,8 +50,8 @@ else fi UTS_VERSION="#$VERSION" -CONFIG_FLAGS="" -if [ -n "$SMP" ] ; then CONFIG_FLAGS="SMP"; fi +CONFIG_FLAGS="PCK" +if [ -n "$SMP" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS SMP"; fi if [ -n "$PREEMPT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT"; fi UTS_VERSION="$UTS_VERSION $CONFIG_FLAGS $TIMESTAMP" diff --git a/security/commoncap.c b/security/commoncap.c index f4c33abd995..70563f11bde 100644 --- a/security/commoncap.c +++ b/security/commoncap.c @@ -1336,12 +1336,14 @@ int cap_mmap_addr(unsigned long addr) } return ret; } +EXPORT_SYMBOL_GPL(cap_mmap_addr); int cap_mmap_file(struct file *file, unsigned long reqprot, unsigned long prot, unsigned long flags) { return 0; } +EXPORT_SYMBOL_GPL(cap_mmap_file); #ifdef CONFIG_SECURITY diff --git a/security/device_cgroup.c b/security/device_cgroup.c index cd97929fac6..424fd230866 100644 --- a/security/device_cgroup.c +++ b/security/device_cgroup.c @@ -8,6 +8,7 @@ #include #include #include +#include #include #include #include @@ -824,3 +825,4 @@ int __devcgroup_check_permission(short type, u32 major, u32 minor, return 0; } +EXPORT_SYMBOL_GPL(__devcgroup_check_permission); diff --git a/security/security.c b/security/security.c index 68f46d849ab..3bc13488bcf 100644 --- a/security/security.c +++ b/security/security.c @@ -537,6 +537,7 @@ int security_path_rmdir(const struct path *dir, struct dentry *dentry) return 0; return call_int_hook(path_rmdir, 0, dir, dentry); } +EXPORT_SYMBOL_GPL(security_path_rmdir); int security_path_unlink(const struct path *dir, struct dentry *dentry) { @@ -553,6 +554,7 @@ int security_path_symlink(const struct path *dir, struct dentry *dentry, return 0; return call_int_hook(path_symlink, 0, dir, dentry, old_name); } +EXPORT_SYMBOL_GPL(security_path_symlink); int security_path_link(struct dentry *old_dentry, const struct path *new_dir, struct dentry *new_dentry) @@ -561,6 +563,7 @@ int security_path_link(struct dentry *old_dentry, const struct path *new_dir, return 0; return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry); } +EXPORT_SYMBOL_GPL(security_path_link); int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, const struct path *new_dir, struct dentry *new_dentry, @@ -588,6 +591,7 @@ int security_path_truncate(const struct path *path) return 0; return call_int_hook(path_truncate, 0, path); } +EXPORT_SYMBOL_GPL(security_path_truncate); int security_path_chmod(const struct path *path, umode_t mode) { @@ -595,6 +599,7 @@ int security_path_chmod(const struct path *path, umode_t mode) return 0; return call_int_hook(path_chmod, 0, path, mode); } +EXPORT_SYMBOL_GPL(security_path_chmod); int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) { @@ -602,6 +607,7 @@ int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) return 0; return call_int_hook(path_chown, 0, path, uid, gid); } +EXPORT_SYMBOL_GPL(security_path_chown); int security_path_chroot(const struct path *path) { @@ -687,6 +693,7 @@ int security_inode_readlink(struct dentry *dentry) return 0; return call_int_hook(inode_readlink, 0, dentry); } +EXPORT_SYMBOL_GPL(security_inode_readlink); int security_inode_follow_link(struct dentry *dentry, struct inode *inode, bool rcu) @@ -702,6 +709,7 @@ int security_inode_permission(struct inode *inode, int mask) return 0; return call_int_hook(inode_permission, 0, inode, mask); } +EXPORT_SYMBOL_GPL(security_inode_permission); int security_inode_setattr(struct dentry *dentry, struct iattr *attr) { @@ -873,6 +881,7 @@ int security_file_permission(struct file *file, int mask) return fsnotify_perm(file, mask); } +EXPORT_SYMBOL_GPL(security_file_permission); int security_file_alloc(struct file *file) { @@ -932,6 +941,7 @@ int security_mmap_file(struct file *file, unsigned long prot, return ret; return ima_file_mmap(file, prot); } +EXPORT_SYMBOL_GPL(security_mmap_file); int security_mmap_addr(unsigned long addr) {