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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2015 Oracle, Inc. All Rights Reserved.
#
# FS QA Test No. 018
#
# Create and populate an ext4 filesystem, corrupt a xattr block, then
# see how the kernel and e2fsck deal with it.
#
. ./common/preamble
_begin_fstest fuzzers
# Override the default cleanup function.
_cleanup()
{
cd /
#rm -f $tmp.*
}
# Import common functions.
. ./common/filter
. ./common/attr
# real QA test starts here
_supported_fs ext4
_require_scratch
test -n "${FORCE_FUZZ}" || _require_scratch_ext4_crc
_require_attrs
TESTDIR="${SCRATCH_MNT}/scratchdir"
TESTFILE="${TESTDIR}/testfile"
echo "+ create scratch fs"
_scratch_mkfs_ext4 > /dev/null 2>&1
echo "+ mount fs image"
_scratch_mount
blksz="$(stat -f -c '%s' "${SCRATCH_MNT}")"
echo "+ make some files"
$XFS_IO_PROG -f -c "pwrite -S 0x62 0 ${blksz}" "${SCRATCH_MNT}/attrfile" >> $seqres.full
setfattr -n user.key -v "$(perl -e 'print "v" x 300;')" "${SCRATCH_MNT}/attrfile"
umount "${SCRATCH_MNT}"
echo "+ check fs"
e2fsck -fn "${SCRATCH_DEV}" >> $seqres.full 2>&1 || _fail "fsck should not fail"
echo "+ corrupt image"
blk="$(debugfs -R 'stat /attrfile' "${SCRATCH_DEV}" 2> /dev/null | grep 'File ACL:' | sed -e 's/^.*File ACL: \([0-9]*\).*/\1/g')"
$XFS_IO_PROG -f -c "pwrite -S 0x62 $((blk * blksz + 20)) 8" "${SCRATCH_DEV}" >> $seqres.full
echo "+ mount image"
_scratch_mount
echo "+ modify attrs"
setfattr -n user.newkey -v "$(perl -e 'print "v" x 300;')" "${SCRATCH_MNT}/attrfile" 2> /dev/null && _fail "xattr should be corrupt"
umount "${SCRATCH_MNT}"
echo "+ repair fs"
e2fsck -fy "${SCRATCH_DEV}" >> $seqres.full 2>&1
echo "+ mount image (2)"
_scratch_mount
echo "+ modify attrs (2)"
setfattr -n user.newkey -v "$(perl -e 'print "v" x 300;')" "${SCRATCH_MNT}/attrfile" || _fail "xattr should not be corrupt"
umount "${SCRATCH_MNT}"
echo "+ check fs (2)"
e2fsck -fn "${SCRATCH_DEV}" >> $seqres.full 2>&1 || _fail "fsck should not fail"
status=0
exit
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