tests/overlay/039

#! /bin/bash
# FS QA Test 039
#
# Test access time update issue for directories in upper layer.
#
# Upstream Commit cd91304e7190 ("ovl: fix relatime for directories")
# fixed this issue.
#
#-----------------------------------------------------------------------
# Copyright (c) 2017 Huawei.  All Rights Reserved.
# Author: zhangyi (F) <yi.zhang@huawei.com>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#-----------------------------------------------------------------------
#

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

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

# real QA test starts here
_supported_fs overlay
_supported_os Linux
_require_scratch
_require_relatime

# remove all files from previous runs
_scratch_mkfs

lowerdir=$OVL_BASE_SCRATCH_MNT/$OVL_LOWER
upperdir=$OVL_BASE_SCRATCH_MNT/$OVL_UPPER
mkdir -p $upperdir/test

_scratch_mount "-o relatime"

# access test dir, it's access time will be updated normally
ls $SCRATCH_MNT/test

pre_access_time=`stat -c "%X" $SCRATCH_MNT/test`

# In relatime mode, access time is only updated if the previous
# access time was earlier than the current modify or change time,
# so trigger modify and change time update.
touch $SCRATCH_MNT/test/foo
sleep 1

# access test dir again
ls $SCRATCH_MNT/test > /dev/null 2>&1

cur_access_time=`stat -c "%X" $SCRATCH_MNT/test`

# compare the results, current access time should later than the previous one
if [ $cur_access_time -le $pre_access_time ] ; then
	echo "Access time is not updated correctly."
fi

# success, all done
echo "Silence is golden"
status=0
exit