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>
85 lines
2.1 KiB
Bash
Executable File
85 lines
2.1 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2017 Red Hat. All Rights Reserved.
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#
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# FS QA Test 462
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#
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# This is a regression test for kernel commit
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# ef947b2 x86, mm: fix gup_pte_range() vs DAX mappings
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# created by Jeffrey Moyer <jmoyer@redhat.com>
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#
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# This is reproducible only when testing on pmem device
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# which is configured in "memory mode", not in "raw mode".
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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 -rf $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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# remove previous $seqres.full before test
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rm -f $seqres.full
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# Modify as appropriate.
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_supported_fs generic
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_supported_os Linux
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_require_test
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_require_scratch_dax
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_require_test_program "t_mmap_write_ro"
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# running by unpriviliged user is not necessary to reproduce
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# this bug, just trying to test more.
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_require_user
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# real QA test starts here
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_scratch_mkfs >>$seqres.full 2>&1
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_scratch_mount "-o dax"
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# remount TEST_DEV wo/ dax
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export TEST_FS_MOUNT_OPTS=""
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_test_cycle_mount
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# prepare a 4k read-only DAX file, save its md5sum
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$XFS_IO_PROG -f -c "pwrite -S 0xFF 0 4096" \
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$SCRATCH_MNT/readonlyfile >> $seqres.full 2>&1
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chmod 0644 $SCRATCH_MNT/readonlyfile
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md5_1="$(_md5_checksum $SCRATCH_MNT/readonlyfile)"
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# prepare another 4k non-DAX file
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$XFS_IO_PROG -f -c "pwrite -S 0x00 0 4096" \
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$TEST_DIR/${seq}.file >> $seqres.full 2>&1
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# allow qa_user access
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chown $qa_user $TEST_DIR/${seq}.file
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# run test programme, read another file writing into
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# the read-only file with mmap, which should fail.
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#
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# don't use $here/src/t_mmap_write_ro, as we're running it as a regular user,
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# and $here may contain path component that a regular user doesn't have search
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# permission
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_user_do "src/t_mmap_write_ro $TEST_DIR/${seq}.file \
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$SCRATCH_MNT/readonlyfile"
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# read-only file should not get updated, md5sum again.
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md5_2="$(_md5_checksum $SCRATCH_MNT/readonlyfile)"
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[ "$md5_1" != "$md5_2" ] && echo "read only file changed"
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# success, all done
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status=0
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exit
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