Y2038

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1132 discussions

[PATCH] xfs_io: implement 'utimes' command

by Deepa Dinamani

Add the utimes command to provide a way to utilize the futimens C library call. On linux, this is the interface to the utimensat system call, which updates the mtime and atime of a file. Signed-off-by: Deepa Dinamani <deepa.kernel(a)gmail.com> --- include/input.h | 1 + io/Makefile | 2 +- io/init.c | 1 + io/io.h | 1 + io/utimes.c | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ libxcmd/input.c | 22 +++++++++++++++ 6 files changed, 109 insertions(+), 1 deletion(-) create mode 100644 io/utimes.c diff --git a/include/input.h b/include/input.h index d02170f..221678e 100644 --- a/include/input.h +++ b/include/input.h @@ -48,6 +48,7 @@ extern uid_t uid_from_string(char *user); extern gid_t gid_from_string(char *group); extern prid_t prid_from_string(char *project); extern bool isdigits_only(const char *str); +extern int timespec_from_string(const char *sec, const char *nsec, struct timespec *ts); #define HAVE_FTW_H 1 /* TODO: configure me */ diff --git a/io/Makefile b/io/Makefile index 62bc03b..392e02a 100644 --- a/io/Makefile +++ b/io/Makefile @@ -11,7 +11,7 @@ HFILES = init.h io.h CFILES = init.c \ attr.c bmap.c file.c freeze.c fsync.c getrusage.c imap.c link.c \ mmap.c open.c parent.c pread.c prealloc.c pwrite.c seek.c shutdown.c \ - sync.c truncate.c reflink.c + sync.c truncate.c reflink.c utimes.c LLDLIBS = $(LIBXCMD) $(LIBHANDLE) LTDEPENDENCIES = $(LIBXCMD) $(LIBHANDLE) diff --git a/io/init.c b/io/init.c index efe7390..6319aeb 100644 --- a/io/init.c +++ b/io/init.c @@ -85,6 +85,7 @@ init_commands(void) sync_range_init(); truncate_init(); reflink_init(); + utimes_init(); } static int diff --git a/io/io.h b/io/io.h index 2bc7ac4..fddd7a3 100644 --- a/io/io.h +++ b/io/io.h @@ -113,6 +113,7 @@ extern void seek_init(void); extern void shutdown_init(void); extern void sync_init(void); extern void truncate_init(void); +extern void utimes_init(void); #ifdef HAVE_FADVISE extern void fadvise_init(void); diff --git a/io/utimes.c b/io/utimes.c new file mode 100644 index 0000000..419d221 --- /dev/null +++ b/io/utimes.c @@ -0,0 +1,83 @@ +/* + * Copyright (c) 2016 Deepa Dinamani + * All Rights Reserved. + * + * 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. + * + * This program is distributed in the hope that it would 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 the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "command.h" +#include "input.h" +#include "init.h" +#include "io.h" + +static cmdinfo_t utimes_cmd; + +static void +utimes_help(void) +{ + printf(_( +"\n" +" Update file atime and mtime of the current file with nansecond precision.\n" +"\n" +" Usage: utimes atime.tv_sec atime.tv_nsec mtime.tv_sec mtime.tv_nsec\n" +" Timestamp is seconds and nanoseconds since 1970-01-01 00:00:00 UTC\n" +"\n")); +} + +static int +utimes_f( + int argc, + char **argv) +{ + struct timespec t[2]; + int result; + + if (argc != 5) + return command_usage(&utimes_cmd); + + /* Get the timestamps */ + result = timespec_from_string(argv[1], argv[2], &t[0]); + if (result) { + fprintf(stderr, "Bad value for atime\n"); + return 1; + } + result = timespec_from_string(argv[3], argv[4], &t[1]); + if (result) { + fprintf(stderr, "Bad value for mtime\n"); + return 1; + } + + /* Call futimens to update time. */ + if (futimens(file->fd, t)) { + perror("futimens"); + return 1; + } + + return 0; +} + +void +utimes_init(void) +{ + utimes_cmd.name = "utimes"; + utimes_cmd.cfunc = utimes_f; + utimes_cmd.argmin = 4; + utimes_cmd.argmax = 4; + utimes_cmd.flags = CMD_NOMAP_OK | CMD_FOREIGN_OK; + utimes_cmd.args = _("atime.tv_sec atime.tv_nsec mtime.tv_sec mtime.tv_nsec"); + utimes_cmd.oneline = _("Update file times for a file"); + utimes_cmd.help = utimes_help; + + add_command(&utimes_cmd); +} diff --git a/libxcmd/input.c b/libxcmd/input.c index 5a7dce3..2fdb3e8 100644 --- a/libxcmd/input.c +++ b/libxcmd/input.c @@ -327,6 +327,28 @@ timestr( } /* + * Convert from a pair of arbitrary user strings into a timespec. + */ + +int +timespec_from_string( + const char * secs, + const char * nsecs, + struct timespec * ts) +{ + char* p; + if (!secs || !nsecs || !ts) + return -1; + ts->tv_sec = strtoull(secs, &p, 0); + if (*p) + return -1; + ts->tv_nsec = strtoull(nsecs, &p, 0); + if (*p) + return -1; + return 0; +} + +/* * Convert from arbitrary user strings into a numeric ID. * If it's all numeric, we convert that inplace, else we do * the name lookup, and return the found identifier. -- 2.7.4

8 years, 4 months

[PATCH] generic/390: Add tests for inode timestamp policy

by Deepa Dinamani

The test helps to validate clamping and mount behaviors according to supported file system timestamp ranges. Note that the test can fail on 32-bit systems for a few file systems. This will be corrected when vfs is transitioned to use 64-bit timestamps. Signed-off-by: Deepa Dinamani <deepa.kernel(a)gmail.com> --- common/attr | 27 ++++++ src/Makefile | 2 +- src/y2038_futimens.c | 61 +++++++++++++ tests/generic/390 | 238 ++++++++++++++++++++++++++++++++++++++++++++++++++ tests/generic/390.out | 2 + tests/generic/group | 1 + 6 files changed, 330 insertions(+), 1 deletion(-) create mode 100644 src/y2038_futimens.c create mode 100755 tests/generic/390 create mode 100644 tests/generic/390.out diff --git a/common/attr b/common/attr index ce2d76a..579dc9b 100644 --- a/common/attr +++ b/common/attr @@ -56,6 +56,33 @@ _acl_get_max() esac } +_filesystem_timestamp_range() +{ + device=${1:-$TEST_DEV} + case $FSTYP in + ext4) #dumpe2fs + if [ $(dumpe2fs -h $device 2>/dev/null | grep "Inode size:" | cut -d: -f2) -gt 128 ]; then + echo "-2147483648 15032385535" + else + echo "-2147483648 2147483647" + fi + ;; + + xfs) + echo "-2147483648 2147483647" + ;; + jfs) + echo "0 4294967295" + ;; + f2fs) + echo "-2147483648 2147483647" + ;; + *) + echo "-1 -1" + ;; + esac +} + _require_acl_get_max() { if [ $(_acl_get_max) -eq 0 ]; then diff --git a/src/Makefile b/src/Makefile index dd51216..0b99ae4 100644 --- a/src/Makefile +++ b/src/Makefile @@ -21,7 +21,7 @@ LINUX_TARGETS = xfsctl bstat t_mtab getdevicesize preallo_rw_pattern_reader \ stale_handle pwrite_mmap_blocked t_dir_offset2 seek_sanity_test \ seek_copy_test t_readdir_1 t_readdir_2 fsync-tester nsexec cloner \ renameat2 t_getcwd e4compact test-nextquota punch-alternating \ - attr-list-by-handle-cursor-test listxattr + attr-list-by-handle-cursor-test listxattr y2038_futimens SUBDIRS = diff --git a/src/y2038_futimens.c b/src/y2038_futimens.c new file mode 100644 index 0000000..291e4fa --- /dev/null +++ b/src/y2038_futimens.c @@ -0,0 +1,61 @@ +#include <fcntl.h> +#include <stdio.h> +#include <sys/stat.h> +#include <errno.h> +#include <stdlib.h> + +int +do_utime(int fd, long long time) +{ + struct timespec t[2]; + + /* + * Convert long long to timespec format. + * Seconds precision is assumed here. + */ + t[0].tv_sec = time; + t[0].tv_nsec = 0; + t[1].tv_sec = time; + t[1].tv_nsec = 0; + + /* Call utimens to update time. */ + if (futimens(fd, t)) { + perror("futimens"); + return 1; + } + + return 0; +} + +int +main(int argc, char **argv) +{ + int fd; + long long time; + + if(argc < 3) { + fprintf(stderr, "Usage: %s filename timestamp\n" + "Filename: file to be created or opened in current directory\n" + "Timestamp: is seconds since 1970-01-01 00:00:00 UTC\n", argv[0]); + exit(1); + } + + /* Create the file */ + fd = creat(argv[1], 0666); + if(fd < 0) { + perror("creat"); + exit(1); + } + + /* Get the timestamp */ + time = strtoull(argv[2], NULL, 0); + if (errno) { + perror("strtoull"); + exit(1); + } + + if (do_utime(fd, time)) + return 1; + + return 0; +} diff --git a/tests/generic/390 b/tests/generic/390 new file mode 100755 index 0000000..f069988 --- /dev/null +++ b/tests/generic/390 @@ -0,0 +1,238 @@ +#! /bin/bash +# FS QA Test No. generic/390 +# +# Tests to verify policy for filesystem timestamps for +# supported ranges: +# 1. Verify filesystem rw mount according to sysctl +# timestamp_supported. +# 2. Verify timestamp clamping for timestamps beyond max +# timestamp supported. +# +# Exit status 1: either or both tests above fail. +# Exit status 0: both the above tests pass. + +seq=`basename $0` +seqres=$RESULT_DIR/$seq +echo "QA output created by $seq" +#echo "output in $seqres.full" +here=`pwd` + +# Get standard environment, filters and checks. +. ./common/rc +. ./common/filter +. ./common/attr + +SRC_GROUPS=`find tests -not -path tests -type d -printf "%f "` + +# Prerequisites for the test run. +_supported_fs generic +_supported_os Linux +_require_scratch + +Y2038_PROG=$here/src/y2038_futimens + +#initialize exit status +status=0 + +# Generic test cleanup function. +_cleanup() +{ + # Remove any leftover files from last run. + rm -f ${SCRATCH_MNT}/test_? +} + +#unmount and mount $SCRATCH_DEV. +_umount_mount_scratch_dev() +{ + #change directory so that you are not using SCRATCH_MNT anymore. + cd $here + + # Unmount the ${SCRATCH_DEV} + _scratch_unmount + if [ $? != 0 ]; then + return $? + fi + + # Mount the ${SCRATCH_DEV} + _scratch_mount + if [ $? != 0 ]; then + return $? + fi + + cd ${SCRATCH_MNT} +} + +# Compare file timestamps obtained from stat +# with a given timestamp. +_check_stat() #check_stat(file, timestamp) +{ + stat_timestamp=`stat -c"%X;%Y" $1` + + prev_timestamp="$2;$2" + if [ $prev_timestamp != $stat_timestamp ]; then + echo "$prev_timestamp != $stat_timestamp" >> $seqres.full + return 1 + else + return 0 + fi +} + +_run_test_individual() #_run_individual_test(file, timestamp, update_time) +{ + file=$1 + timestamp=$2 + update_time=$3 + + #check if the time needs update + if [ $update_time -eq 1 ]; then + echo "Updating file: $file to timestamp `date -d @$timestamp`" >> $seqres.full + $Y2038_PROG $file $timestamp &>> $seqres.full + if [ $? != 0 ]; then + echo "Failed to run the y2038 program" >> $seqres.full + return 1 + fi + fi + + tsclamp=$(($timestamp>$tsmax?$tsmax:$timestamp)) + _check_stat $file $tsclamp + echo "Checking file: $file Updated timestamp is `date -d @$tsclamp`" >> $seqres.full + + if [ $? != 0 ]; then + echo "Failed to set time to $timestamp" >> $seqres.full + return 1 + fi + + return 0 +} + +_run_test() #_run_test(update_time) +{ + #initialization iterator + n=1 + + for TIME in "${TIMESTAMPS[@]}" + do + #Run the test + _run_test_individual ${SCRATCH_MNT}/test_$n $TIME $1 + + if [ $? != 0 ]; then + echo "file timestamp update failed `date -d @$TIME`" >> $seqres.full + if [ $n -lt 4 ]; then + echo "Test failed" + return 1 + fi + fi + + #update iterator + ((n++)) + done + + return 0 +} + +#Remove log from last run +rm -f $seqres.full + +#install cleaner +trap "_cleanup; exit \$status" 0 1 2 3 15 + +_scratch_mkfs &>> $seqres.full 2>&1 || _fail "mkfs failed" +read tsmin tsmax <<<$(_filesystem_timestamp_range $SCRATCH_DEV) + +if [ $tsmin -eq -1 -a $tsmax -eq -1 ]; then + _notrun "filesystem $FSTYP timestamp bounds are unknown" +fi + +echo min supported timestamp $tsmin $(date --date=@$tsmin) >> $seqres.full +echo max supported timestamp $tsmax $(date --date=@$tsmax) >> $seqres.full + +#Test timestamps array + +declare -a TIMESTAMPS=( + $tsmin + 0 + $tsmax + $((tsmax+1)) + 4294967295 + 8589934591 + 34359738367 +) + +# Max timestamp is hardcoded to Mon Jan 18 19:14:07 PST 2038 +sys_tsmax=2147483647 +echo "min timestamp that needs to be supported by fs for rw mount is $sys_tsmax $(date --date=@$sys_tsmax)" >> $seqres.full + +read ts_check <<<$(cat /proc/sys/fs/fs-timestamp-check-on) + +_scratch_mount +result=$? + +if [ $ts_check != 0 ]; then + echo "sysctl filesystem timestamp check is on" >> $seqres.full + if [ $sys_tsmax > $tsmax ]; then + if [ $result != -1 ]; then + echo "mount test failed" >> $seqres.full + fi + else + if [ $result != 0 ]; then + echo "mount test failed" >> $seqres.full + fi + fi +else + echo "sysctl filesystem timestamp check is off" >> $seqres.full + if [ $result != 0 ]; then + echo "mount test failed" >> $seqres.full + fi +fi + +#cd to the SCRATCH_MNT to run the tests +cd $SCRATCH_MNT + +# Begin test case 1 +echo "In memory timestamps update test start" >> $seqres.full + +#update time on the file +update_time=1 + +#Run test +_run_test $update_time + +if [ $? != 0 ]; then + echo "In memory timestamps update failed" >> $seqres.full + status=1 + exit +fi + +echo "In memory timestamps update complete" >> $seqres.full + +echo "Unmounting and mounting scratch $SCRATCH_MNT" >> $seqres.full + +#unmount and remount $SCRATCH_DEV +_umount_mount_scratch_dev + +if [ $? != 0 ];then + status=1 + exit +fi + +# Begin test case 2 + +#re-initialize iterator +n=1 + +#Do not update time on the file, just read from disk +update_time=0 + +echo "On disk timestamps update test start" >> $seqres.full + +#Re-run test +_run_test $update_time + +if [ $? != 0 ];then + status=1 + exit +fi + +echo "On disk timestamps update test complete" >> $seqres.full + +echo "y2038 inode filestamp update successful" diff --git a/tests/generic/390.out b/tests/generic/390.out new file mode 100644 index 0000000..355f28e --- /dev/null +++ b/tests/generic/390.out @@ -0,0 +1,2 @@ +QA output created by 390 +y2038 inode filestamp update successful diff --git a/tests/generic/group b/tests/generic/group index 08007d7..d137d01 100644 --- a/tests/generic/group +++ b/tests/generic/group @@ -392,3 +392,4 @@ 387 auto clone 388 auto log metadata 389 auto quick acl +390 auto quick rw -- 2.7.4

8 years, 4 months

Unable to deliver your item, #0000531397

by FedEx International MailService

Dear Customer, This is to confirm that one or more of your parcels has been shipped. Please, download Delivery Label attached to this email. Thank you for choosing FedEx, Randall Schneider, Station Manager.

8 years, 5 months

[RFC 0/6] vfs: Add timestamp range check support

by Deepa Dinamani

The original thread is at https://lkml.org/lkml/2016/11/2/294 The branch is available at https://github.com/deepa-hub/vfs.git refs/heads/vfs_timestamp_policy Changes since v1: * return EROFS on mount errors * fix mtime copy/paste error in utimes Deepa Dinamani (6): vfs: Add file timestamp range support vfs: Add checks for filesystem timestamp limits afs: Add time limits in the super block ext4: Initialize timestamps limits vfs: Add timestamp_truncate() api utimes: Clamp the timestamps before update fs/afs/super.c | 2 ++ fs/ext4/ext4.h | 4 ++++ fs/ext4/super.c | 7 ++++++- fs/inode.c | 37 ++++++++++++++++++++++++++++++++++++- fs/internal.h | 2 ++ fs/libfs.c | 4 ++++ fs/namespace.c | 12 ++++++++++++ fs/super.c | 9 +++++++++ fs/utimes.c | 17 +++++++++++++---- include/linux/fs.h | 4 ++++ include/linux/time64.h | 6 ++++++ include/uapi/linux/fs.h | 6 +++++- kernel/sysctl.c | 7 +++++++ 13 files changed, 110 insertions(+), 7 deletions(-) -- 2.7.4

8 years, 5 months

[RESEND PATCH] fs: ext4: Use current_time() for inode timestamps

by Deepa Dinamani

CURRENT_TIME_SEC and CURRENT_TIME are not y2038 safe. current_time() will be transitioned to be y2038 safe along with vfs. current_time() returns timestamps according to the granularities set in the super_block. The granularity check in ext4_current_time() to call current_time() or CURRENT_TIME_SEC is not required. Use current_time() directly to obtain timestamps unconditionally, and remove ext4_current_time(). Quota files are assumed to be on the same filesystem. Hence, use current_time() for these files as well. Signed-off-by: Deepa Dinamani <deepa.kernel(a)gmail.com> Reviewed-by: Arnd Bergmann <arnd(a)arndb.de> --- fs/ext4/acl.c | 2 +- fs/ext4/ext4.h | 6 ------ fs/ext4/extents.c | 10 +++++----- fs/ext4/ialloc.c | 2 +- fs/ext4/inline.c | 4 ++-- fs/ext4/inode.c | 6 +++--- fs/ext4/ioctl.c | 8 ++++---- fs/ext4/namei.c | 24 +++++++++++++----------- fs/ext4/super.c | 2 +- fs/ext4/xattr.c | 2 +- 10 files changed, 31 insertions(+), 35 deletions(-) diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c index dfa5199..fd38993 100644 --- a/fs/ext4/acl.c +++ b/fs/ext4/acl.c @@ -196,7 +196,7 @@ __ext4_set_acl(handle_t *handle, struct inode *inode, int type, error = posix_acl_update_mode(inode, &inode->i_mode, &acl); if (error) return error; - inode->i_ctime = ext4_current_time(inode); + inode->i_ctime = current_time(inode); ext4_mark_inode_dirty(handle, inode); } break; diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 282a51b..6789379 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -1532,12 +1532,6 @@ static inline struct ext4_inode_info *EXT4_I(struct inode *inode) return container_of(inode, struct ext4_inode_info, vfs_inode); } -static inline struct timespec ext4_current_time(struct inode *inode) -{ - return (inode->i_sb->s_time_gran < NSEC_PER_SEC) ? - current_fs_time(inode->i_sb) : CURRENT_TIME_SEC; -} - static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino) { return ino == EXT4_ROOT_INO || diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index c930a01..786be87 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -4725,7 +4725,7 @@ static int ext4_alloc_file_blocks(struct file *file, ext4_lblk_t offset, map.m_lblk += ret; map.m_len = len = len - ret; epos = (loff_t)map.m_lblk << inode->i_blkbits; - inode->i_ctime = ext4_current_time(inode); + inode->i_ctime = current_time(inode); if (new_size) { if (epos > new_size) epos = new_size; @@ -4853,7 +4853,7 @@ static long ext4_zero_range(struct file *file, loff_t offset, } /* Now release the pages and zero block aligned part of pages */ truncate_pagecache_range(inode, start, end - 1); - inode->i_mtime = inode->i_ctime = ext4_current_time(inode); + inode->i_mtime = inode->i_ctime = current_time(inode); ret = ext4_alloc_file_blocks(file, lblk, max_blocks, new_size, flags, mode); @@ -4878,7 +4878,7 @@ static long ext4_zero_range(struct file *file, loff_t offset, goto out_dio; } - inode->i_mtime = inode->i_ctime = ext4_current_time(inode); + inode->i_mtime = inode->i_ctime = current_time(inode); if (new_size) { ext4_update_inode_size(inode, new_size); } else { @@ -5568,7 +5568,7 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len) up_write(&EXT4_I(inode)->i_data_sem); if (IS_SYNC(inode)) ext4_handle_sync(handle); - inode->i_mtime = inode->i_ctime = ext4_current_time(inode); + inode->i_mtime = inode->i_ctime = current_time(inode); ext4_mark_inode_dirty(handle, inode); out_stop: @@ -5678,7 +5678,7 @@ int ext4_insert_range(struct inode *inode, loff_t offset, loff_t len) /* Expand file to avoid data loss if there is error while shifting */ inode->i_size += len; EXT4_I(inode)->i_disksize += len; - inode->i_mtime = inode->i_ctime = ext4_current_time(inode); + inode->i_mtime = inode->i_ctime = current_time(inode); ret = ext4_mark_inode_dirty(handle, inode); if (ret) goto out_stop; diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index 170421e..088afe0 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -1039,7 +1039,7 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir, /* This is the optimal IO size (for stat), not the fs block size */ inode->i_blocks = 0; inode->i_mtime = inode->i_atime = inode->i_ctime = ei->i_crtime = - ext4_current_time(inode); + current_time(inode); memset(ei->i_data, 0, sizeof(ei->i_data)); ei->i_dir_start_lookup = 0; diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c index f74d5ee..cfa87bd 100644 --- a/fs/ext4/inline.c +++ b/fs/ext4/inline.c @@ -1028,7 +1028,7 @@ static int ext4_add_dirent_to_inline(handle_t *handle, * happen is that the times are slightly out of date * and/or different from the directory change time. */ - dir->i_mtime = dir->i_ctime = ext4_current_time(dir); + dir->i_mtime = dir->i_ctime = current_time(dir); ext4_update_dx_flag(dir); dir->i_version++; ext4_mark_inode_dirty(handle, dir); @@ -1971,7 +1971,7 @@ void ext4_inline_data_truncate(struct inode *inode, int *has_inline) if (inode->i_nlink) ext4_orphan_del(handle, inode); - inode->i_mtime = inode->i_ctime = ext4_current_time(inode); + inode->i_mtime = inode->i_ctime = current_time(inode); ext4_mark_inode_dirty(handle, inode); if (IS_SYNC(inode)) ext4_handle_sync(handle); diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 3d58b2b..926ed1f 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -4029,7 +4029,7 @@ int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length) if (IS_SYNC(inode)) ext4_handle_sync(handle); - inode->i_mtime = inode->i_ctime = ext4_current_time(inode); + inode->i_mtime = inode->i_ctime = current_time(inode); ext4_mark_inode_dirty(handle, inode); out_stop: ext4_journal_stop(handle); @@ -4183,7 +4183,7 @@ void ext4_truncate(struct inode *inode) if (inode->i_nlink) ext4_orphan_del(handle, inode); - inode->i_mtime = inode->i_ctime = ext4_current_time(inode); + inode->i_mtime = inode->i_ctime = current_time(inode); ext4_mark_inode_dirty(handle, inode); ext4_journal_stop(handle); @@ -5157,7 +5157,7 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr) * update c/mtime in shrink case below */ if (!shrink) { - inode->i_mtime = ext4_current_time(inode); + inode->i_mtime = current_time(inode); inode->i_ctime = inode->i_mtime; } down_write(&EXT4_I(inode)->i_data_sem); diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index bf5ae8e..3bba9e9 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -153,7 +153,7 @@ static long swap_inode_boot_loader(struct super_block *sb, swap_inode_data(inode, inode_bl); - inode->i_ctime = inode_bl->i_ctime = ext4_current_time(inode); + inode->i_ctime = inode_bl->i_ctime = current_time(inode); spin_lock(&sbi->s_next_gen_lock); inode->i_generation = sbi->s_next_generation++; @@ -272,7 +272,7 @@ static int ext4_ioctl_setflags(struct inode *inode, } ext4_set_inode_flags(inode); - inode->i_ctime = ext4_current_time(inode); + inode->i_ctime = current_time(inode); err = ext4_mark_iloc_dirty(handle, inode, &iloc); flags_err: @@ -368,7 +368,7 @@ static int ext4_ioctl_setproject(struct file *filp, __u32 projid) } EXT4_I(inode)->i_projid = kprojid; - inode->i_ctime = ext4_current_time(inode); + inode->i_ctime = current_time(inode); out_dirty: rc = ext4_mark_iloc_dirty(handle, inode, &iloc); if (!err) @@ -500,7 +500,7 @@ long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) } err = ext4_reserve_inode_write(handle, inode, &iloc); if (err == 0) { - inode->i_ctime = ext4_current_time(inode); + inode->i_ctime = current_time(inode); inode->i_generation = generation; err = ext4_mark_iloc_dirty(handle, inode, &iloc); } diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 104f8bf..eadba91 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -1941,7 +1941,7 @@ static int add_dirent_to_buf(handle_t *handle, struct ext4_filename *fname, * happen is that the times are slightly out of date * and/or different from the directory change time. */ - dir->i_mtime = dir->i_ctime = ext4_current_time(dir); + dir->i_mtime = dir->i_ctime = current_time(dir); ext4_update_dx_flag(dir); dir->i_version++; ext4_mark_inode_dirty(handle, dir); @@ -2987,7 +2987,7 @@ static int ext4_rmdir(struct inode *dir, struct dentry *dentry) * recovery. */ inode->i_size = 0; ext4_orphan_add(handle, inode); - inode->i_ctime = dir->i_ctime = dir->i_mtime = ext4_current_time(inode); + inode->i_ctime = dir->i_ctime = dir->i_mtime = current_time(inode); ext4_mark_inode_dirty(handle, inode); ext4_dec_count(handle, dir); ext4_update_dx_flag(dir); @@ -3050,13 +3050,13 @@ static int ext4_unlink(struct inode *dir, struct dentry *dentry) retval = ext4_delete_entry(handle, dir, de, bh); if (retval) goto end_unlink; - dir->i_ctime = dir->i_mtime = ext4_current_time(dir); + dir->i_ctime = dir->i_mtime = current_time(dir); ext4_update_dx_flag(dir); ext4_mark_inode_dirty(handle, dir); drop_nlink(inode); if (!inode->i_nlink) ext4_orphan_add(handle, inode); - inode->i_ctime = ext4_current_time(inode); + inode->i_ctime = current_time(inode); ext4_mark_inode_dirty(handle, inode); end_unlink: @@ -3254,7 +3254,7 @@ static int ext4_link(struct dentry *old_dentry, if (IS_DIRSYNC(dir)) ext4_handle_sync(handle); - inode->i_ctime = ext4_current_time(inode); + inode->i_ctime = current_time(inode); ext4_inc_count(handle, inode); ihold(inode); @@ -3381,7 +3381,7 @@ static int ext4_setent(handle_t *handle, struct ext4_renament *ent, ent->de->file_type = file_type; ent->dir->i_version++; ent->dir->i_ctime = ent->dir->i_mtime = - ext4_current_time(ent->dir); + current_time(ent->dir); ext4_mark_inode_dirty(handle, ent->dir); BUFFER_TRACE(ent->bh, "call ext4_handle_dirty_metadata"); if (!ent->inlined) { @@ -3651,7 +3651,7 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, * Like most other Unix systems, set the ctime for inodes on a * rename. */ - old.inode->i_ctime = ext4_current_time(old.inode); + old.inode->i_ctime = current_time(old.inode); ext4_mark_inode_dirty(handle, old.inode); if (!whiteout) { @@ -3663,9 +3663,9 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, if (new.inode) { ext4_dec_count(handle, new.inode); - new.inode->i_ctime = ext4_current_time(new.inode); + new.inode->i_ctime = current_time(new.inode); } - old.dir->i_ctime = old.dir->i_mtime = ext4_current_time(old.dir); + old.dir->i_ctime = old.dir->i_mtime = current_time(old.dir); ext4_update_dx_flag(old.dir); if (old.dir_bh) { retval = ext4_rename_dir_finish(handle, &old, new.dir->i_ino); @@ -3723,6 +3723,7 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry, }; u8 new_file_type; int retval; + struct timespec ctime; if ((ext4_encrypted_inode(old_dir) || ext4_encrypted_inode(new_dir)) && @@ -3823,8 +3824,9 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry, * Like most other Unix systems, set the ctime for inodes on a * rename. */ - old.inode->i_ctime = ext4_current_time(old.inode); - new.inode->i_ctime = ext4_current_time(new.inode); + ctime = current_time(old.inode); + old.inode->i_ctime = ctime; + new.inode->i_ctime = ctime; ext4_mark_inode_dirty(handle, old.inode); ext4_mark_inode_dirty(handle, new.inode); diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 45589c8..f86d0cb 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -5351,7 +5351,7 @@ static int ext4_quota_off(struct super_block *sb, int type) handle = ext4_journal_start(inode, EXT4_HT_QUOTA, 1); if (IS_ERR(handle)) goto out; - inode->i_mtime = inode->i_ctime = CURRENT_TIME; + inode->i_mtime = inode->i_ctime = current_time(inode); ext4_mark_inode_dirty(handle, inode); ext4_journal_stop(handle); diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index d77be9e..9c1bb5c 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -1249,7 +1249,7 @@ ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index, } if (!error) { ext4_xattr_update_super_block(handle, inode->i_sb); - inode->i_ctime = ext4_current_time(inode); + inode->i_ctime = current_time(inode); if (!value) ext4_clear_inode_state(inode, EXT4_STATE_NO_EXPAND); error = ext4_mark_iloc_dirty(handle, inode, &is.iloc); -- 2.7.4

8 years, 5 months

[RESEND PATCH] fs: jfs: Replace CURRENT_TIME_SEC by current_time()

by Deepa Dinamani

jfs uses nanosecond granularity for filesystem timestamps. Only this assignment is not using nanosecond granularity. Use current_time() to get the right granularity. Signed-off-by: Deepa Dinamani <deepa.kernel(a)gmail.com> Acked-by: Dave Kleikamp <dave.kleikamp(a)oracle.com> Reviewed-by: Arnd Bergmann <arnd(a)arndb.de> --- fs/jfs/ioctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/jfs/ioctl.c b/fs/jfs/ioctl.c index 8653cac..b6fd1ff 100644 --- a/fs/jfs/ioctl.c +++ b/fs/jfs/ioctl.c @@ -121,7 +121,7 @@ long jfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) jfs_set_inode_flags(inode); inode_unlock(inode); - inode->i_ctime = CURRENT_TIME_SEC; + inode->i_ctime = current_time(inode); mark_inode_dirty(inode); setflags_out: mnt_drop_write_file(filp); -- 2.7.4

8 years, 5 months

[RESEND PATCH] fs: ufs: Use ktime_get_real_ts64() for birthtime

by Deepa Dinamani

CURRENT_TIME is not y2038 safe. Replace it with ktime_get_real_ts64(). Inode time formats are already 64 bit long and accommodates time64_t. Signed-off-by: Deepa Dinamani <deepa.kernel(a)gmail.com> --- fs/ufs/ialloc.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/fs/ufs/ialloc.c b/fs/ufs/ialloc.c index 9774555..d1dd8cc 100644 --- a/fs/ufs/ialloc.c +++ b/fs/ufs/ialloc.c @@ -176,6 +176,7 @@ struct inode *ufs_new_inode(struct inode *dir, umode_t mode) struct ufs_cg_private_info * ucpi; struct ufs_cylinder_group * ucg; struct inode * inode; + struct timespec64 ts; unsigned cg, bit, i, j, start; struct ufs_inode_info *ufsi; int err = -ENOSPC; @@ -323,8 +324,9 @@ struct inode *ufs_new_inode(struct inode *dir, umode_t mode) lock_buffer(bh); ufs2_inode = (struct ufs2_inode *)bh->b_data; ufs2_inode += ufs_inotofsbo(inode->i_ino); - ufs2_inode->ui_birthtime = cpu_to_fs64(sb, CURRENT_TIME.tv_sec); - ufs2_inode->ui_birthnsec = cpu_to_fs32(sb, CURRENT_TIME.tv_nsec); + ktime_get_real_ts64(&ts); + ufs2_inode->ui_birthtime = cpu_to_fs64(sb, ts.tv_sec); + ufs2_inode->ui_birthnsec = cpu_to_fs32(sb, ts.tv_nsec); mark_buffer_dirty(bh); unlock_buffer(bh); if (sb->s_flags & MS_SYNCHRONOUS) -- 2.7.4

8 years, 5 months

Re: [Y2038] [RFC 0/6] vfs: Add timestamp range check support

by Deepa Dinamani

I will post xfs tests that validate mount and range checking. I will keep the policy same as what the RFC suggests for now. Clamping can be verified once vfs is transitioned to using time64_t. Thanks, Deepa

8 years, 5 months

[RFC 0/6] vfs: Add timestamp range check support

by Deepa Dinamani

The series is aimed at adding timestamp checking and policy related to it to vfs. The series was developed with discussions and guidance from Arnd Bergmann. The original idea for the series was the discussion: https://lkml.org/lkml/2014/5/30/551 Patches 5 and 6 can be merged only after vfs is transitioned to use 64 bit timestamps as noted in the respective commit texts. The series only includes adding range limits to filesystems: ext4 and afs as examples to keep the series simple. Every filesystem will be updated to add these limits. There is an ext4 current_time() api replacement patch that the series depends on: https://lkml.org/lkml/2016/6/9/38 . This needs reposting to the mailing list. The branch for the tree along with dependency can be found at https://github.com/deepa-hub/vfs.git refs/heads/vfs_timestamp_policy Deepa Dinamani (6): vfs: Add file timestamp range support vfs: Add checks for filesystem timestamp limits afs: Add time limits in the super block ext4: Initialize timestamps limits vfs: Add timestamp_truncate() api utimes: Clamp the timestamps before update fs/afs/super.c | 2 ++ fs/ext4/ext4.h | 4 ++++ fs/ext4/super.c | 7 ++++++- fs/inode.c | 37 ++++++++++++++++++++++++++++++++++++- fs/internal.h | 2 ++ fs/libfs.c | 4 ++++ fs/namespace.c | 12 ++++++++++++ fs/super.c | 8 ++++++++ fs/utimes.c | 17 +++++++++++++---- include/linux/fs.h | 4 ++++ include/linux/time64.h | 6 ++++++ include/uapi/linux/fs.h | 6 +++++- kernel/sysctl.c | 7 +++++++ 13 files changed, 109 insertions(+), 7 deletions(-) -- 2.7.4 Cc: linux-afs(a)lists.infradead.org Cc: "Theodore Ts'o" <tytso(a)mit.edu> Cc: Andreas Dilger <adilger.kernel(a)dilger.ca> Cc: linux-ext4(a)vger.kernel.org

8 years, 5 months

[PATCH v2 0/4] Make input drivers y2038 safe

by Deepa Dinamani

Reposting the series as I did not hear comments from the maintainers. The series is aimed at making input events y2038 safe. It extends the lifetime of the realtime timestamps in the events to year 2106. The plan is to deprecate realtime timestamps anyway as they are not appropriate for these timestamps as noted in the patch a80b83b7b8 by John Stultz. The series is a result of many discussions with Arnd Bergmann. The design updates the format of the input events read/ written to the device nodes. This structure and the uapi/input.h header file are copied across many userspace libraries. These libraries not only use this struct input_event locally, but also expose interfaces that contain input_event. To maintain backward compatibility with all these interfaces, kernel updates the format of the input events at the dev node to struct raw_input_event. Kernel also maintains the old struct input_event and provides apis to convert between the old and new input event types. The userspace library changes to libevdev, libuinput and mtdev will be posted to the respective mailing groups for review. Once there is a consensus on the design, all the changes dependent on the kernel change will be merged at the same time. Changes from v1: * Updated changes according to review comments. * Posted userspace library changes that go along with the series. Deepa Dinamani (4): uinput: Add ioctl for using monotonic/ boot times input: evdev: Replace timeval with timespec64 input: Deprecate real timestamps beyond year 2106 input: serio: Replace timeval by timespec64 drivers/input/evdev.c | 57 ++++++++++++++++++++---------------- drivers/input/input-compat.c | 29 ++++++++++--------- drivers/input/input-compat.h | 19 +++++++----- drivers/input/misc/uinput.c | 62 +++++++++++++++++++++++++++++++++++++--- drivers/input/serio/hil_mlc.c | 37 ++++++++++++------------ drivers/input/serio/hp_sdc.c | 17 +++++------ drivers/input/serio/hp_sdc_mlc.c | 10 +++---- include/linux/hil_mlc.h | 6 ++-- include/linux/hp_sdc.h | 6 ++-- include/linux/uinput.h | 3 +- include/uapi/linux/input.h | 47 ++++++++++++++++++++++++++++++ include/uapi/linux/uinput.h | 3 ++ 12 files changed, 208 insertions(+), 88 deletions(-) -- 2.7.4

8 years, 6 months

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