tests/ext4/016

#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2015 Oracle, Inc.  All Rights Reserved.
#
# FS QA Test No. 016
#
# Create and populate an ext4 filesystem, corrupt a dirent 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

_exclude_fs ext2
_exclude_fs ext3

_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

echo "+ make some files"
for x in `seq 1 15`; do
	mkdir -p "${SCRATCH_MNT}/test/d_${x}"
done
umount "${SCRATCH_MNT}"

echo "+ check fs"
e2fsck -fn "${SCRATCH_DEV}" >> $seqres.full 2>&1 || _fail "fsck should not fail"

echo "+ corrupt image"
debugfs -w -R "zap -f /test 0" "${SCRATCH_DEV}" 2> /dev/null

echo "+ mount image"
_scratch_mount

echo "+ modify dirs"
mkdir -p "${SCRATCH_MNT}/test/newdir" 2> /dev/null && _fail "directory should be corrupt"
umount "${SCRATCH_MNT}"

echo "+ repair fs"
e2fsck -fy "${SCRATCH_DEV}" >> $seqres.full 2>&1

echo "+ mount image (2)"
_scratch_mount

echo "+ modify dirs (2)"
mkdir -p "${SCRATCH_MNT}/test/newdir" || _fail "directory should be corrupt"
umount "${SCRATCH_MNT}"

echo "+ check fs (2)"
e2fsck -fn "${SCRATCH_DEV}" >> $seqres.full 2>&1 || _fail "fsck should not fail"

status=0
exit