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>
96 lines
2.6 KiB
Bash
Executable File
96 lines
2.6 KiB
Bash
Executable File
#! /bin/bash
|
|
# FS QA Test No. 019
|
|
#
|
|
# Create and populate an ext4 filesystem, corrupt a big symlink, then
|
|
# see how the kernel and e2fsck deal with it. (They won't)
|
|
#
|
|
#-----------------------------------------------------------------------
|
|
# Copyright (c) 2015 Oracle, Inc. All Rights Reserved.
|
|
#
|
|
# This program is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU General Public License as
|
|
# published by the Free Software Foundation.
|
|
#
|
|
# This program is distributed in the hope that it would be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program; if not, write the Free Software Foundation,
|
|
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
#-----------------------------------------------------------------------
|
|
#
|
|
|
|
seq=`basename $0`
|
|
seqres=$RESULT_DIR/$seq
|
|
echo "QA output created by $seq"
|
|
|
|
here=`pwd`
|
|
tmp=/tmp/$$
|
|
status=1 # failure is the default!
|
|
trap "_cleanup; exit \$status" 0 1 2 3 15
|
|
|
|
_cleanup()
|
|
{
|
|
cd /
|
|
#rm -f $tmp.*
|
|
}
|
|
|
|
# get standard environment, filters and checks
|
|
. ./common/rc
|
|
. ./common/filter
|
|
. ./common/attr
|
|
|
|
# real QA test starts here
|
|
_supported_fs ext4
|
|
_supported_os Linux
|
|
|
|
_require_scratch
|
|
test -n "${FORCE_FUZZ}" || _require_scratch_ext4_crc
|
|
_require_attrs
|
|
|
|
rm -f $seqres.full
|
|
TESTDIR="${SCRATCH_MNT}/scratchdir"
|
|
TESTFILE="${TESTDIR}/testfile"
|
|
|
|
echo "+ create scratch fs"
|
|
_scratch_mkfs_ext4 -O journal > /dev/null 2>&1
|
|
|
|
echo "+ mount fs image"
|
|
_scratch_mount
|
|
blksz="$(stat -f -c '%s' "${SCRATCH_MNT}")"
|
|
test "${blksz}" -gt 4096 && blksz=4096
|
|
|
|
echo "+ make some files"
|
|
echo "file contents: moo" > "${SCRATCH_MNT}/x"
|
|
str="$(perl -e "print './' x $(( (blksz / 2) - 16));")x"
|
|
(cd $SCRATCH_MNT; ln -s "${str}" "long_symlink")
|
|
cat "${SCRATCH_MNT}/long_symlink"
|
|
umount "${SCRATCH_MNT}"
|
|
|
|
echo "+ check fs"
|
|
e2fsck -fn "${SCRATCH_DEV}" >> $seqres.full 2>&1 || _fail "fsck should not fail"
|
|
|
|
echo "+ corrupt image"
|
|
debugfs -w -R 'zap -f /long_symlink -p 0x62 0' "${SCRATCH_DEV}" 2> /dev/null
|
|
|
|
echo "+ mount image"
|
|
_scratch_mount 2> /dev/null
|
|
cat "${SCRATCH_MNT}/long_symlink" 2>/dev/null && _fail "symlink should be broken"
|
|
umount "${SCRATCH_MNT}"
|
|
|
|
echo "+ repair fs"
|
|
e2fsck -fy "${SCRATCH_DEV}" >> $seqres.full 2>&1
|
|
|
|
echo "+ mount image (2)"
|
|
_scratch_mount
|
|
cat "${SCRATCH_MNT}/long_symlink" 2>/dev/null && _fail "symlink should be broken"
|
|
umount "${SCRATCH_MNT}"
|
|
|
|
echo "+ check fs (2)"
|
|
e2fsck -fn "${SCRATCH_DEV}" >> $seqres.full 2>&1 || _fail "fsck should not fail"
|
|
|
|
status=0
|
|
exit
|