apfstests/tests/generic/535

#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2019 Huawei.  All Rights Reserved.
#
# FS QA Test 535
#
# This testcase is trying to test recovery flow of generic filesystem,
# w/ below steps, once i_mode changes, after we fsync that file, we can
# expect that i_mode can be recovered after sudden power-cuts.
# 1. touch testfile or mkdir testdir
# 2. chmod 777 testfile/testdir
# 3. sync
# 4. chmod 755 testfile/testdir
# 5. fsync testfile/testdir
# 6. record last i_mode
# 7. flakey drop
# 8. remount
# 9. check i_mode
#
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()
{
	_cleanup_flakey
	cd /
	rm -f $tmp.*
}

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

# remove previous $seqres.full before test
rm -f $seqres.full

# real QA test starts here
_supported_fs generic

_require_scratch
_require_dm_target flakey

_scratch_mkfs >/dev/null 2>&1
_require_metadata_journaling $SCRATCH_DEV
_init_flakey

testfile=$SCRATCH_MNT/testfile
testdir=$SCRATCH_MNT/testdir

do_check()
{
	local target=$1
	local is_dir=$2

	_mount_flakey

	if [ $is_dir = 1 ]; then
		mkdir $target
	else
		touch $target
	fi

	echo "Test chmod $target" >> $seqres.full

	chmod 777 $target
	sync

	chmod 755 $target
	$XFS_IO_PROG $target -c "fsync"

	local before=`stat -c %a $target`

	_flakey_drop_and_remount

	local after=`stat -c %a $target`

	# check inode's i_mode
	if [ "$before" != "$after" ]; then
		echo "Before: $before"
		echo "After : $after"
	fi

	if [ $is_dir = 1 ]; then
		rmdir $target
	else
		rm -f $target
	fi
	_unmount_flakey
}

echo "Silence is golden"

do_check $testfile 0
do_check $testdir 1

status=0
exit