#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2015 Oracle, Inc.  All Rights Reserved.
#
# FS QA Test No. 089
#
# Create and populate an XFS filesystem, corrupt the bnobt, then see how
# the kernel and xfs_repair deal with it.
#
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
. ./common/populate

# real QA test starts here
_supported_fs xfs
_supported_os Linux

_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"

rm -f $seqres.full
TESTDIR="${SCRATCH_MNT}/scratchdir"
TESTFILE="${TESTDIR}/testfile"

echo "+ create scratch fs"
_scratch_mkfs_xfs > /dev/null

echo "+ mount fs image"
_scratch_mount
blksz="$(stat -f -c '%s' "${SCRATCH_MNT}")"

echo "+ make some files"
mkdir -p "${TESTDIR}"
for x in `seq 1 1024`; do
	touch "${SCRATCH_MNT}/junk.${x}"
	inode="$(stat -c '%i' "${SCRATCH_MNT}/junk.${x}")"
	if [ "$x" -gt 512 ] && [ "$((inode % 64))" -eq 0 ]; then
		mv "${SCRATCH_MNT}/junk.${x}" "${TESTFILE}.1"
		break
	fi
done
for x in `seq 2 64`; do
	touch "${TESTFILE}.${x}"
done
inode="$(stat -c '%i' "${TESTFILE}.1")"
agcount="$(_xfs_mount_agcount $SCRATCH_MNT)"
umount "${SCRATCH_MNT}"

echo "+ check fs"
_scratch_xfs_repair -n >> $seqres.full 2>&1 || _fail "xfs_repair should not fail"

echo "+ corrupt image"
for ag in $(seq 1 $((agcount - 1))) 0; do
	_scratch_xfs_db -x -c "agf ${ag}" -c "agf ${ag}" -c "addr bnoroot" -c "stack" -c "blocktrash -x 32 -y $((blksz * 8)) -z ${FUZZ_ARGS}" >> $seqres.full 2>&1
done

# Try to append to files; this should fail
echo "+ mount image && modify files"
if _try_scratch_mount >> $seqres.full 2>&1; then

	for x in `seq 1 64`; do
		$XFS_IO_PROG -f -c "pwrite -S 0x62 0 ${blksz}" "${TESTFILE}.${x}" >> $seqres.full
	done
	umount "${SCRATCH_MNT}"
fi

echo "+ repair fs"
_scratch_xfs_repair >> $seqres.full 2>&1

echo "+ mount image"
_scratch_mount

echo "+ chattr -R -i"
$CHATTR_PROG -R -f -i "${SCRATCH_MNT}/"

echo "+ check files"
ls -la "${TESTDIR}" >> $seqres.full
broken=0
for x in `seq 1 64`; do
	test -s "${TESTFILE}.${x}" || broken=1
done
echo "broken: ${broken}"

# Try appending again, now that we've fixed the fs
echo "+ modify files (2)"
for x in `seq 1 64`; do
	$XFS_IO_PROG -f -c "pwrite -S 0x62 ${blksz} ${blksz}" "${TESTFILE}.${x}" >> $seqres.full
done
umount "${SCRATCH_MNT}"

echo "+ repair fs"
_scratch_xfs_repair >> $seqres.full 2>&1

echo "+ mount image"
_scratch_mount

echo "+ chattr -R -i"
$CHATTR_PROG -R -f -i "${SCRATCH_MNT}/"

echo "+ check files (2)"
broken=0
for x in `seq 1 64`; do
	test -s "${TESTFILE}.${x}" || broken=1
done
echo "broken: ${broken}"
umount "${SCRATCH_MNT}"

echo "+ check fs (2)"
_scratch_xfs_repair -n >> $seqres.full 2>&1 || _fail "xfs_repair should not fail"

status=0
exit