#! /bin/bash
# FS QA Test No. 408
#
# Verify that mtime is not updated when deduping files.
#
#-----------------------------------------------------------------------
#
# Copyright (c) 2017 Christoph Hellwig.  All Rights Reserved.
# 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`
status=0
trap "_cleanup; exit \$status" 0 1 2 3 15

_cleanup()
{
	cd /
	rm -f $sourcefile
	rm -f $destfile
}

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

# real QA test starts here
_supported_fs generic
_supported_os Linux

_require_test
_require_test_dedupe

echo "Silence is golden."
rm -f $seqres.full

# pattern the files.
sourcefile=$TEST_DIR/dedup_mtime_sourcefile
$XFS_IO_PROG -f -c "pwrite 0 4k" -c fsync $sourcefile >> $seqres.full

destfile=$TEST_DIR/dedup_mtime_destfile
$XFS_IO_PROG -f -c "pwrite 0 4k" -c fsync $destfile >> $seqres.full

# sample timestamps.
mtime1=`stat -c %Y $destfile`
ctime1=`stat -c %Z $destfile`
echo "before dedup: $mtime1 $ctime1" >> $seqres.full

# dedup to trigger timestamp change
sleep 1
_dedupe_range $sourcefile 0 $destfile 0 "4k" >> $seqres.full

# sample and verify that timestamps have changed.
mtime2=`stat -c %Y $destfile`
ctime2=`stat -c %Z $destfile`
echo "after dedup : $mtime2 $ctime2" >> $seqres.full

if [ "$mtime1" != "$mtime2" ]; then
	echo "mtime updated"
	let status=$status+1
fi
if [ "$ctime1" != "$ctime2" ]; then
	echo "ctime updated"
	let status=$status+1
fi

exit