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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2016 Oracle, Inc. All Rights Reserved.
#
# FS QA Test No. 235
#
# Create and populate an XFS filesystem, corrupt the rmap btree,
# then see how the kernel and xfs_repair deal with it.
#
. ./common/preamble
_begin_fstest fuzzers rmap
# Import common functions.
. ./common/filter
. ./common/attr
# real QA test starts here
_supported_fs xfs
_require_xfs_scratch_rmapbt
test -n ${FORCE_FUZZ} || _require_scratch_xfs_crc
echo "+ create scratch fs"
_scratch_mkfs_xfs > /dev/null
echo "+ mount fs image"
_scratch_mount
blksz=$(stat -f -c '%s' ${SCRATCH_MNT})
agcount=$(_xfs_mount_agcount $SCRATCH_MNT)
_xfs_force_bdev data $SCRATCH_MNT
echo "+ make some files"
_pwrite_byte 0x62 0 $((blksz * 64)) ${SCRATCH_MNT}/file0 >> $seqres.full
_pwrite_byte 0x61 0 $((blksz * 64)) ${SCRATCH_MNT}/file1 >> $seqres.full
cp -p ${SCRATCH_MNT}/file0 ${SCRATCH_MNT}/file2
cp -p ${SCRATCH_MNT}/file1 ${SCRATCH_MNT}/file3
umount ${SCRATCH_MNT}
echo "+ check fs"
_scratch_xfs_repair -n >> $seqres.full 2>&1 || \
_fail "xfs_repair should not fail"
echo "+ corrupt image"
seq 0 $((agcount - 1)) | while read ag; do
_scratch_xfs_db -x -c "agf ${ag}" -c "agf ${ag}" -c "addr rmaproot" \
-c "stack" -c "blocktrash -x 4096 -y 4096 -z -n 8 -3" \
>> $seqres.full 2>&1
done
echo "+ mount image && copy more"
if _try_scratch_mount >> $seqres.full 2>&1; then
$XFS_IO_PROG -f -c "pwrite -S 0x63 0 $((blksz * 64))" -c "fsync" ${SCRATCH_MNT}/file4 >> $seqres.full 2>&1
test -s ${SCRATCH_MNT}/file4 && _fail "should not be able to copy with busted rmap btree"
umount ${SCRATCH_MNT}
fi
echo "+ repair fs"
_disable_dmesg_check
_repair_scratch_fs >> "$seqres.full" 2>&1
_repair_scratch_fs >> $seqres.full 2>&1
echo "+ mount image (2)"
_scratch_mount
echo "+ chattr -R -i"
$CHATTR_PROG -R -f -i ${SCRATCH_MNT}/
echo "+ copy more (2)"
cp -p ${SCRATCH_MNT}/file1 ${SCRATCH_MNT}/file5 || \
_fail "modified rmap tree"
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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