Y2038 July 2017

y2038@lists.linaro.org

6 participants
7 discussions

[PATCH v3] 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> --- The branch of the kernel tree can be located at https://github.com/deepa-hub/vfs refs/heads/vfs_timestamp_policy The xfs_io patch to add utimes is at https://www.spinics.net/lists/linux-xfs/msg02952.html Changes since v2: * Refactored notrun handling * Updated comments Changes since v1: * Use xfs_io utimes command * Updated error handling * Reorganized code according to review comments common/rc | 48 +++++++++++++ tests/generic/390 | 192 ++++++++++++++++++++++++++++++++++++++++++++++++++ tests/generic/390.out | 2 + tests/generic/group | 1 + 4 files changed, 243 insertions(+) create mode 100755 tests/generic/390 create mode 100644 tests/generic/390.out diff --git a/common/rc b/common/rc index e3b54ec..17f025e 100644 --- a/common/rc +++ b/common/rc @@ -1960,6 +1960,51 @@ _run_aiodio() return $status } +# this test requires y2038 sysfs switch and filesystem +# timestamp ranges support. +_require_y2038() +{ + local device=${1:-$TEST_DEV} + local sysfsdir=/proc/sys/fs/fs-timestamp-check-on + + if [ ! -e $sysfsdir ]; then + _notrun "no kernel support for y2038 sysfs switch" + fi + + local tsmin tsmax + read tsmin tsmax <<<$(_filesystem_timestamp_range $device) + if [ $tsmin -eq -1 -a $tsmax -eq -1 ]; then + _notrun "filesystem $FSTYP timestamp bounds are unknown" + fi +} + +_filesystem_timestamp_range() +{ + device=${1:-$TEST_DEV} + case $FSTYP in + ext4) + 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 +} + # indicate whether YP/NIS is active or not # _yp_active() @@ -2070,6 +2115,9 @@ _require_xfs_io_command() echo $testio | egrep -q "Inappropriate ioctl" && \ _notrun "xfs_io $command support is missing" ;; + "utimes" ) + testio=`$XFS_IO_PROG -f -c "utimes" 0 0 0 0 $testfile 2>&1` + ;; *) testio=`$XFS_IO_PROG -c "$command help" 2>&1` esac diff --git a/tests/generic/390 b/tests/generic/390 new file mode 100755 index 0000000..f68b931 --- /dev/null +++ b/tests/generic/390 @@ -0,0 +1,192 @@ +#! /bin/bash +# FS QA Test 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. +# +#----------------------------------------------------------------------- +# 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 +#----------------------------------------------------------------------- +# + +seq=`basename $0` +seqres=$RESULT_DIR/$seq +echo "QA output created by $seq" + +here=`pwd` +tmp=/tmp/$$ +status=1 # failure is the default! +trap "exit \$status" 0 1 2 3 15 + +# Get standard environment, filters and checks. +. ./common/rc +. ./common/filter +. ./common/attr + +# remove previous $seqres.full before test +rm -f $seqres.full + +# Prerequisites for the test run. +_supported_fs generic +_supported_os Linux +_require_scratch +_require_xfs_io_command utimes + +# Compare file timestamps obtained from stat +# with a given timestamp. +check_stat() +{ + file=$1 + timestamp=$2 + + stat_timestamp=`stat -c"%X;%Y" $file` + + prev_timestamp="$timestamp;$timestamp" + if [ $prev_timestamp != $stat_timestamp ]; then + echo "$prev_timestamp != $stat_timestamp" | tee -a $seqres.full + fi +} + +run_test_individual() +{ + 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 + $XFS_IO_PROG -f -c "utimes $timestamp 0 $timestamp 0" $file + if [ $? -ne 0 ]; then + echo "Failed to update times on $file" | tee -a $seqres.full + fi + fi + + tsclamp=$(($timestamp>$tsmax?$tsmax:$timestamp)) + echo "Checking file: $file Updated timestamp is `date -d @$tsclamp`" >> $seqres.full + check_stat $file $tsclamp +} + +run_test() +{ + update_time=$1 + + n=1 + + for TIME in "${TIMESTAMPS[@]}" + do + #Run the test + run_test_individual ${SCRATCH_MNT}/test_$n $TIME $update_time + + #update iterator + ((n++)) + done +} + +_scratch_mkfs &>> $seqres.full 2>&1 || _fail "mkfs failed" +_require_y2038 $SCRATCH_DEV + +read tsmin tsmax <<<$(_filesystem_timestamp_range $SCRATCH_DEV) +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 + $((tsmax+1)) + 4294967295 + 8589934591 + 34359738367 +) + +# Max timestamp is hardcoded to Mon Jan 18 19:14:07 PST 2038 +sys_tsmax=2147483647 +echo "max timestamp that needs to be supported by fs for rw mount is" \ + "$((sys_tsmax+1)) $(date --date=@$((sys_tsmax+1)))" >> $seqres.full + +read ts_check <<<$(cat /proc/sys/fs/fs-timestamp-check-on) + +_scratch_mount +result=$? + +if [ $ts_check -ne 0 ]; then + echo "sysctl filesystem timestamp check is on" >> $seqres.full + # check for mount failure if the minimum requirement for max timestamp + # supported is not met. + if [ $sys_tsmax -ge $tsmax ]; then + if [ $result -eq 0 ]; then + echo "mount test failed" | tee -a $seqres.full + exit + fi + else + if [ $result -ne 0 ]; then + echo "failed to mount $SCRATCH_DEV" | tee -a $seqres.full + exit + fi + fi +else + # if sysctl switch is off then mount should succeed always. + echo "sysctl filesystem timestamp check is off" >> $seqres.full + if [ $result -ne 0 ]; then + echo "failed to mount $SCRATCH_DEV and timestamp check is off" >> $seqres.full + exit + fi +fi + +# Begin test case 1 +echo "In memory timestamps update test start" >> $seqres.full + +# update time on the file +update_time=1 + +run_test $update_time + +echo "In memory timestamps update complete" >> $seqres.full + +echo "Unmounting and mounting scratch $SCRATCH_MNT" >> $seqres.full + +# unmount and remount $SCRATCH_DEV +_scratch_cycle_mount + +# Begin test case 2 + +n=1 + +# Do not update time on the file this time, just read from disk +update_time=0 + +echo "On disk timestamps update test start" >> $seqres.full + +# Re-run test +run_test $update_time + +echo "On disk timestamps update test complete" >> $seqres.full + +echo "y2038 inode timestamp tests completed successfully" + +# success, all done +status=0 +exit diff --git a/tests/generic/390.out b/tests/generic/390.out new file mode 100644 index 0000000..82bd4eb --- /dev/null +++ b/tests/generic/390.out @@ -0,0 +1,2 @@ +QA output created by 390 +y2038 inode timestamp tests completed successfully 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

5 years, 7 months

[PATCH 0/7] [media] y2038 conversion for subsystem

by Arnd Bergmann

Hi everyone, This is a conversion of all subsystem-wide v4l2 code to avoid the use of types based on time_t. The first five patches should all be harmless and obvious, so they can get applied for 4.3 after normal review. The last two patches are marked RFC for now because their possible impact on the user space ABI and to decide if this is the best approach or whether we should instead introduce extra code in the kernel to handle modified user space. There are a few device drivers beyond this series that rely on time_t/timeval/timespec internally, but they are all easy to fix and can be taken care of later. Arnd Arnd Bergmann (7): [media] dvb: use ktime_t for internal timeout [media] dvb: remove unused systime() function [media] dvb: don't use 'time_t' in event ioctl [media] exynos4-is: use monotonic timestamps as advertized [media] use v4l2_get_timestamp where possible [RFC] [media]: v4l2: introduce v4l2_timeval [RFC] [media] introduce v4l2_timespec type for timestamps drivers/media/dvb-core/demux.h | 2 +- drivers/media/dvb-core/dmxdev.c | 2 +- drivers/media/dvb-core/dvb_demux.c | 17 ++++++----------- drivers/media/dvb-core/dvb_demux.h | 4 ++-- drivers/media/dvb-core/dvb_net.c | 2 +- drivers/media/dvb-frontends/dibx000_common.c | 10 ---------- drivers/media/dvb-frontends/dibx000_common.h | 2 -- drivers/media/pci/bt8xx/bttv-driver.c | 7 ++----- drivers/media/pci/cx18/cx18-mailbox.c | 2 +- drivers/media/pci/meye/meye.h | 2 +- drivers/media/pci/zoran/zoran.h | 2 +- drivers/media/platform/coda/coda.h | 2 +- drivers/media/platform/exynos4-is/fimc-capture.c | 8 +------- drivers/media/platform/exynos4-is/fimc-lite.c | 7 +------ drivers/media/platform/omap/omap_vout.c | 4 ++-- drivers/media/platform/omap3isp/ispstat.c | 5 ++--- drivers/media/platform/omap3isp/ispstat.h | 2 +- drivers/media/platform/s3c-camif/camif-capture.c | 8 +------- drivers/media/platform/vim2m.c | 2 +- drivers/media/platform/vivid/vivid-ctrls.c | 2 +- drivers/media/usb/cpia2/cpia2.h | 2 +- drivers/media/usb/cpia2/cpia2_v4l.c | 2 +- drivers/media/usb/gspca/gspca.c | 6 +++--- drivers/media/usb/usbvision/usbvision.h | 2 +- drivers/media/v4l2-core/v4l2-common.c | 6 +++--- drivers/media/v4l2-core/v4l2-event.c | 20 +++++++++++++------- drivers/staging/media/omap4iss/iss_video.c | 5 +---- include/media/v4l2-common.h | 2 +- include/media/videobuf-core.h | 2 +- include/trace/events/v4l2.h | 12 ++++++++++-- include/uapi/linux/dvb/video.h | 3 ++- include/uapi/linux/omap3isp.h | 2 +- include/uapi/linux/videodev2.h | 16 ++++++++++++++-- 33 files changed, 79 insertions(+), 93 deletions(-) -- 2.1.0.rc2

7 years, 2 months

[PATCH v2 0/6] Make ipc y2038 safe

by Deepa Dinamani

The series aims to transition internal workings of ipc subsystem to use y2038-safe types and apis. The series is based on Al Viro's #work.ipc branch. Changes since v1: * Addressed audit review comments Deepa Dinamani (6): ipc: Make sys_semtimedop() y2038 safe ipc: mqueue: Replace timespec with timespec64 ipc: msg: Make msg_queue timestamps y2038 safe ipc: sem: Make sem_array timestamps y2038 safe ipc: shm: Make shmid_kernel timestamps y2038 safe utimes: Make utimes y2038 safe fs/utimes.c | 23 ++++++++++++----------- include/linux/audit.h | 6 +++--- include/linux/msg.h | 7 ++++--- include/linux/sem.h | 3 ++- include/linux/shm.h | 6 +++--- include/linux/time.h | 2 +- init/initramfs.c | 2 +- ipc/mqueue.c | 28 ++++++++++++++-------------- ipc/msg.c | 12 ++++++------ ipc/sem.c | 34 +++++++++++++++++----------------- ipc/shm.c | 16 ++++++++-------- kernel/audit.h | 2 +- kernel/auditsc.c | 12 ++++++------ 13 files changed, 78 insertions(+), 75 deletions(-) -- 2.11.0

7 years, 3 months

[RESEND 0/6] Make ipc y2038 safe

by Deepa Dinamani

Resending to fix mail subject header. The series aims to transition internal workings of ipc subsystem to use y2038-safe types and apis. The series is based on Al Viro's #work.ipc branch. Deepa Dinamani (6): ipc: Make sys_semtimedop() y2038 safe ipc: mqueue: Replace timespec with timespec64 ipc: msg: Make msg_queue timestamps y2038 safe ipc: sem: Make sem_array timestamps y2038 safe ipc: shm: Make shmid_kernel timestamps y2038 safe utimes: Make utimes y2038 safe fs/utimes.c | 23 ++++++++++++----------- include/linux/audit.h | 6 +++--- include/linux/msg.h | 7 ++++--- include/linux/sem.h | 3 ++- include/linux/shm.h | 6 +++--- include/linux/time.h | 2 +- init/initramfs.c | 2 +- ipc/mqueue.c | 28 ++++++++++++++-------------- ipc/msg.c | 12 ++++++------ ipc/sem.c | 34 +++++++++++++++++----------------- ipc/shm.c | 16 ++++++++-------- kernel/audit.h | 2 +- kernel/auditsc.c | 12 ++++++------ 13 files changed, 78 insertions(+), 75 deletions(-) -- 2.11.0 Cc: Paul Moore <paul(a)paul-moore.com> Cc: Richard Guy Briggs <rgb(a)redhat.com>

7 years, 3 months

(no subject)

by Deepa Dinamani

Subject: [PATCH 0/6] Make ipc y2038 safe The series aims to transition internal workings of ipc subsystem to use y2038-safe types and apis. The series is based on Al Viro's #work.ipc branch. Deepa Dinamani (6): ipc: Make sys_semtimedop() y2038 safe ipc: mqueue: Replace timespec with timespec64 ipc: msg: Make msg_queue timestamps y2038 safe ipc: sem: Make sem_array timestamps y2038 safe ipc: shm: Make shmid_kernel timestamps y2038 safe utimes: Make utimes y2038 safe fs/utimes.c | 23 ++++++++++++----------- include/linux/audit.h | 6 +++--- include/linux/msg.h | 7 ++++--- include/linux/sem.h | 3 ++- include/linux/shm.h | 6 +++--- include/linux/time.h | 2 +- init/initramfs.c | 2 +- ipc/mqueue.c | 28 ++++++++++++++-------------- ipc/msg.c | 12 ++++++------ ipc/sem.c | 34 +++++++++++++++++----------------- ipc/shm.c | 16 ++++++++-------- kernel/audit.h | 2 +- kernel/auditsc.c | 12 ++++++------ 13 files changed, 78 insertions(+), 75 deletions(-) -- 2.11.0 Cc: Paul Moore <paul(a)paul-moore.com> Cc: Richard Guy Briggs <rgb(a)redhat.com>

7 years, 3 months

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by King Song

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7 years, 4 months

[PATCH v3 0/7] Isolate time_t data types for clock/timer syscalls

by Deepa Dinamani

The series aims at isolating data conversions of time_t based structures: struct timespec and struct itimerspec at user space boundaries. This helps to later change the underlying types to handle y2038 changes to these. The series is an update to Arnd Bergmann's previous series: http://sourceware.org/ml/libc-alpha/2015-05/msg00070.html Changes since v1: * Rebased and removed common code paths on the tip linux-next. Changes since v2: * Removed accidental inclusion of wrong version of patch 3/7. Deepa Dinamani (7): time: add get_timespec64 and put_timespec64 time: introduce {get,put}_itimerspec64 posix-stubs: Conditionally include COMPAT_SYS_NI defines posix-timers: Use get_timepsec64() and put_timespec64() nanosleep: Use get_timepsec64() and put_timespec64() timerfd: Use get_itimerspec64() and put_itimerspec64() posix_clocks: Use get_itimerspec64() and put_itimerspec64() fs/timerfd.c | 43 +++++++------ include/linux/compat.h | 6 ++ include/linux/hrtimer.h | 2 +- include/linux/posix-timers.h | 1 - include/linux/time.h | 18 ++++++ kernel/compat.c | 65 ++++++++++++++++++++ kernel/time/alarmtimer.c | 4 +- kernel/time/hrtimer.c | 30 ++++------ kernel/time/posix-cpu-timers.c | 8 +-- kernel/time/posix-stubs.c | 96 +++++++++++++++-------------- kernel/time/posix-timers.c | 133 +++++++++++++++-------------------------- kernel/time/time.c | 58 ++++++++++++++++++ 12 files changed, 287 insertions(+), 177 deletions(-) -- 2.11.0

7 years, 4 months

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Y2038 July 2017