mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Darrick J. Wong
fc4dd61688
Targeted fuzzing tests which destroy various pieces of file, directory, and symlink metadata; the tests look for (a) kernel detection of corruption, (b) e2fsck repair of said corruption, and (c) post-repair fs usability. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
100 lines
2.6 KiB
Bash
Executable File
100 lines
2.6 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test No. 017
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#
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# Create and populate an ext4 filesystem, corrupt a htree block, then
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# see how the kernel and e2fsck deal with it.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2015 Oracle, Inc. All Rights Reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#-----------------------------------------------------------------------
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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 $tmp.*
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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. ./common/attr
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# real QA test starts here
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_supported_fs ext4
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_supported_os Linux
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_require_scratch
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test -n "${FORCE_FUZZ}" || _require_scratch_ext4_crc
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_require_attrs
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rm -f $seqres.full
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TESTDIR="${SCRATCH_MNT}/scratchdir"
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TESTFILE="${TESTDIR}/testfile"
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echo "+ create scratch fs"
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_scratch_mkfs_ext4 > /dev/null 2>&1
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echo "+ mount fs image"
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_scratch_mount
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blksz="$(stat -f -c '%s' "${SCRATCH_MNT}")"
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echo "+ make some files"
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mkdir -p "${SCRATCH_MNT}/test/"
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for x in `seq 1 $((blksz * 4 / 256))`; do
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fname="$(printf "%.255s\n" "$(perl -e "print \"${x}_\" x 500;")")"
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touch "${SCRATCH_MNT}/test/${fname}"
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done
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umount "${SCRATCH_MNT}"
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echo "+ check fs"
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e2fsck -fn "${SCRATCH_DEV}" >> $seqres.full 2>&1 || _fail "fsck should not fail"
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echo "+ corrupt image"
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debugfs -w -R "zap -f /test 0" "${SCRATCH_DEV}" 2> /dev/null
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echo "+ mount image"
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_scratch_mount
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echo "+ modify dirs"
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mkdir -p "${SCRATCH_MNT}/test/newdir" 2> /dev/null && _fail "htree should be corrupt"
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umount "${SCRATCH_MNT}"
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echo "+ repair fs"
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e2fsck -fy "${SCRATCH_DEV}" >> $seqres.full 2>&1
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echo "+ mount image (2)"
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_scratch_mount
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echo "+ modify dirs (2)"
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mkdir -p "${SCRATCH_MNT}/test/newdir" || _fail "htree should not be corrupt"
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umount "${SCRATCH_MNT}"
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echo "+ check fs (2)"
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e2fsck -fn "${SCRATCH_DEV}" >> $seqres.full 2>&1 || _fail "fsck should not fail"
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status=0
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exit
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