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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2015 Oracle, Inc. All Rights Reserved.
#
# FS QA Test No. 112
#
# Create and populate an XFS filesystem, corrupt a node directory's freeindex
# extent, then see how the kernel and xfs_repair deal with it.
#
. ./common/preamble
_begin_fstest fuzzers
# Override the default cleanup function.
_cleanup()
{
cd /
#rm -f $tmp.*
}
# Import common functions.
. ./common/filter
. ./common/attr
. ./common/populate
# real QA test starts here
_supported_fs xfs
_require_scratch
test -n "${FORCE_FUZZ}" || _require_scratch_xfs_crc
_require_attrs
_require_populate_commands
_require_xfs_db_blocktrash_z_command
test -z "${FUZZ_ARGS}" && FUZZ_ARGS="-n 8 -3"
echo "+ create scratch fs"
_scratch_mkfs_xfs > /dev/null
echo "+ mount fs image"
_scratch_mount
dblksz=$(_xfs_get_dir_blocksize "$SCRATCH_MNT")
nr="$((16 * dblksz / 40))"
blksz="$(stat -f -c '%s' "${SCRATCH_MNT}")"
leaf_lblk="$((32 * 1073741824 / blksz))"
node_lblk="$((64 * 1073741824 / blksz))"
echo "+ make some files"
__populate_create_dir "${SCRATCH_MNT}/blockdir" "${nr}" true
inode="$(stat -c '%i' "${SCRATCH_MNT}/blockdir")"
umount "${SCRATCH_MNT}"
echo "+ check fs"
_scratch_xfs_repair -n >> $seqres.full 2>&1 || _fail "xfs_repair should not fail"
echo "+ check dir"
__populate_check_xfs_dir "${inode}" node
echo "+ corrupt dir"
loff="${node_lblk}"
while true; do
_scratch_xfs_db -x -c "inode ${inode}" -c "dblock ${loff}" -c "stack" | grep -q 'file data block is unmapped' && break
_scratch_xfs_db -x -c "inode ${inode}" -c "dblock ${loff}" -c "stack" -c "blocktrash -x 32 -y $((blksz * 8)) -z ${FUZZ_ARGS}" >> $seqres.full
loff="$((loff + 1))"
done
echo "+ mount image && modify dir"
if _try_scratch_mount >> $seqres.full 2>&1; then
rm -rf "${SCRATCH_MNT}/blockdir/00000000" 2> /dev/null && _fail "modified corrupt directory"
mkdir "${SCRATCH_MNT}/blockdir/xxxxxxxx" 2> /dev/null && _fail "add to corrupt directory"
umount "${SCRATCH_MNT}"
fi
echo "+ repair fs"
_repair_scratch_fs >> $seqres.full 2>&1
if [ $? -eq 2 ]; then
_scratch_mount
umount "${SCRATCH_MNT}"
_repair_scratch_fs >> $seqres.full 2>&1
fi
echo "+ mount image (2)"
_scratch_mount
echo "+ chattr -R -i"
$CHATTR_PROG -R -f -i "${SCRATCH_MNT}/"
echo "+ modify dir (2)"
mkdir -p "${SCRATCH_MNT}/blockdir"
rm -rf "${SCRATCH_MNT}/blockdir/00000000" || _fail "couldn't modify repaired directory"
mkdir "${SCRATCH_MNT}/blockdir/xxxxxxxx" || _fail "add to repaired directory"
umount "${SCRATCH_MNT}"
echo "+ check fs (2)"
_scratch_xfs_repair -n >> $seqres.full 2>&1 || _fail "xfs_repair should not fail"
status=0
exit
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