#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2018 SUSE Linux Products GmbH. All Rights Reserved.
#
# FS QA Test No. 498
#
# Test that if we create a new hard link for a file which was previously
# fsync'ed, fsync a parent directory of the new hard link and power fail,
# the parent directory exists after mounting the filesystem again.
#
seq=`basename $0`
seqres=$RESULT_DIR/$seq
echo "QA output created by $seq"
tmp=/tmp/$$
status=1	# failure is the default!
trap "_cleanup; exit \$status" 0 1 2 3 15

_cleanup()
{
	_cleanup_flakey
	cd /
	rm -f $tmp.*
}

# get standard environment, filters and checks
. ./common/rc
. ./common/filter
. ./common/dmflakey

# real QA test starts here
_supported_fs generic
_supported_os Linux
_require_scratch
_require_hardlinks
_require_dm_target flakey

rm -f $seqres.full

_scratch_mkfs >>$seqres.full 2>&1
_require_metadata_journaling $SCRATCH_DEV
_init_flakey
_mount_flakey

mkdir $SCRATCH_MNT/A
mkdir $SCRATCH_MNT/B
mkdir $SCRATCH_MNT/A/C
touch $SCRATCH_MNT/B/foo
$XFS_IO_PROG -c "fsync" $SCRATCH_MNT/B/foo
# It is important the new hard link is located in a hierarchy of new directories
# (not yet persisted).
ln $SCRATCH_MNT/B/foo $SCRATCH_MNT/A/C/foo
$XFS_IO_PROG -c "fsync" $SCRATCH_MNT/A

# Simulate a power failure and mount the filesystem to check that what we
# explicitly fsync'ed exists.
_flakey_drop_and_remount

[ -d $SCRATCH_MNT/A ] || echo "directory A missing"
[ -f $SCRATCH_MNT/B/foo ] || echo "file B/foo is missing"

_unmount_flakey

echo "Silence is golden"
status=0
exit