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https://github.com/linux-apfs/apfstests.git
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Darrick J. Wong
a860a167d8
fstests only supports Linux, so get rid of this unnecessary predicate. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Eryu Guan <guaneryu@gmail.com>
82 lines
2.2 KiB
Bash
Executable File
82 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) 2018 FUJITSU LIMITED. All Rights Reserved.
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#
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# FS QA Test No. 448
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#
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# Regression test for commit:
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# 46c59736d809 ("xfs: harden directory integrity checks some more")
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#
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# If a malicious XFS contains a block+ format directory wherein
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# the directory inode's core.mode is corrupted, and there are
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# subdirectories of the corrupted directory, an attempt to traverse
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# up the directory tree by running xfs_scrub will crash the
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# kernel in __xfs_dir3_data_check.
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#
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# Notice:
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# we should have non fatal asserts configured, because assert
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# failures triggered by the intentional corrupt would crash system.
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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 $tmp.*
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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. ./common/populate
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# real QA test starts here
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_supported_fs xfs
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_require_scratch_nocheck
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_require_xfs_io_command "scrub"
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# Corrupt XFS on purpose, and skip if assert failures would crash system.
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_require_no_xfs_bug_on_assert
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rm -f "$seqres.full"
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# Format and mount
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_scratch_mkfs | _filter_mkfs > $seqres.full 2> $tmp.mkfs || _fail "mkfs failed"
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_scratch_mount
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# Get directory block size
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. $tmp.mkfs
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# Create a block+(e.g. leaf) format directory
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__populate_create_dir "${SCRATCH_MNT}/dir_leaf" "$((dirbsize / 12))"
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# Get the block+ directory inode and a subdirectory inode of it
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subdino=$(stat -c "%i" "$(find ${SCRATCH_MNT}/dir_leaf/* -type d | head -1)")
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dino=$(stat -c "%i" "${SCRATCH_MNT}/dir_leaf")
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# Get the subdirectory's generation number
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_scratch_unmount
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subdgen=$(_scratch_xfs_get_metadata_field "core.gen" "inode $subdino")
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# Corrupt the directory inode's core.mode
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setmode="0100755"
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_scratch_xfs_set_metadata_field "core.mode" "$setmode" "inode $dino" >> $seqres.full
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getmode=$(_scratch_xfs_get_metadata_field "core.mode" "inode $dino")
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[ "$getmode" != "$setmode" ] && _fail "failed to set core.mode"
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# Scrub parent directory in subdirectory (online)
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_scratch_mount
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$XFS_IO_PROG -x -c "scrub parent $subdino $subdgen" ${SCRATCH_MNT} >> $seqres.full
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echo "Silence is golden"
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# success, all done
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status=0
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exit
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