mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Zhihao Cheng
b7cecbea22
Calling src/<file> without path '$here' may cause the problem that
the file cannot be found.
For example, Running generic/192 with overlayfs(Let ubifs as base
fs) yields the following output:
generic/192 - output mismatch
QA output created by 192
sleep for 5 seconds
test
+./common/rc: line 316: src/t_dir_type: No such file or directory
delta1 is in range
delta2 is in range
...
When the use case fails, the call stack in generic/192 is:
local unknowns=$(src/t_dir_type $dir u | wc -l) common/rc
_supports_filetype common/rc
_overlay_mount common/overlay
_overlay_test_mount common/overlay
_test_mount common/rc
_test_cycle_mount generic/192
Before _test_cycle_mount() being invoked, generic/192 executed 'cd
/' to change work dir from 'xfstests-dev' to '/', so src/t_dir_type
was not found.
[Eryu: some tests run src/<file> as regular user, don't add $here
prefix in such case, as a regular user may have no search permission
on $here]
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
94 lines
2.2 KiB
Bash
Executable File
94 lines
2.2 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2014 Red Hat, Inc. All Rights Reserved.
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#
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# FS QA Test No. 042
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#
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# Test stale data exposure via writeback using various file allocation
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# modification commands. The presumption is that such commands result in partial
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# writeback and can convert a delayed allocation extent, that might be larger
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# than the ranged affected by fallocate, to a normal extent. If the fs happens
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# to crash sometime between when the extent modification is logged and writeback
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# occurs for dirty pages within the extent but outside of the fallocated range,
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# stale data exposure can occur.
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#
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -f $tmp.*
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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. ./common/punch
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# real QA test starts here
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rm -f $seqres.full
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_crashtest()
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{
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cmd=$1
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img=$SCRATCH_MNT/$seq.img
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mnt=$SCRATCH_MNT/$seq.mnt
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file=$mnt/file
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# Create an fs on a small, initialized image. The pattern is written to
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# the image to detect stale data exposure.
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$XFS_IO_PROG -f -c "truncate 0" -c "pwrite -S 0xCD 0 25M" $img \
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>> $seqres.full 2>&1
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_mkfs_dev $img >> $seqres.full 2>&1
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mkdir -p $mnt
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_mount $img $mnt
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echo $cmd
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# write, run the test command and shutdown the fs
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$XFS_IO_PROG -f -c "pwrite -S 1 0 64k" -c "$cmd 60k 4k" $file | \
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_filter_xfs_io
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$here/src/godown -f $mnt
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$UMOUNT_PROG $mnt
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_mount $img $mnt
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# We should /never/ see 0xCD in the file, because we wrote that pattern
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# to the filesystem image to expose stale data.
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if hexdump -v -e '/1 "%02X "' $file | grep -q "CD"; then
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echo "Saw stale data!!!"
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hexdump $file
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fi
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$UMOUNT_PROG $mnt
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}
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# Modify as appropriate.
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_supported_fs generic
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_supported_os Linux
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_require_scratch
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_require_scratch_shutdown
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_require_xfs_io_command "falloc"
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_require_xfs_io_command "fpunch"
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_require_xfs_io_command "fzero"
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_scratch_mkfs >/dev/null 2>&1
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_require_local_device $SCRATCH_DEV
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_require_metadata_journaling $SCRATCH_DEV
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_scratch_mount
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_crashtest "falloc -k"
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_crashtest "fpunch"
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_crashtest "fzero -k"
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status=0
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exit
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