apfstests/tests/generic/215

#! /bin/bash
# FS QA Test No. 215
#
# Test out c/mtime updates after mapped writes.
#
# Based on the testcase in http://bugzilla.kernel.org/show_bug.cgi?id=2645
#
#-----------------------------------------------------------------------
# Copyright (c) 2009 Christoph Hellwig.
#
# 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"

_cleanup()
{
	cd /
	rm -f $testfile
}

here=`pwd`
tmp=/tmp/$$
status=1	# failure is the default!
trap "_cleanup; exit \$status" 0 1 2 3 15

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

# real QA test starts here
_supported_fs generic
_supported_os Linux

testfile=$TEST_DIR/tst.mmap

echo
echo "creating test file"
dd if=/dev/zero of=$testfile count=4096

mtime1=`stat --printf="%Y" $testfile`
ctime1=`stat --printf="%Z" $testfile`

sleep 2

echo
echo "writing via mmap"
$XFS_IO_PROG -f 		\
	-c 'mmap 0 4096'	\
	-c 'mwrite 0 4096'	\
	$testfile | _filter_xfs_io_unique

mtime2=`stat --printf="%Y" $testfile`
ctime2=`stat --printf="%Z" $testfile`

let mtime_diff=$mtime2-$mtime1
let ctime_diff=$ctime2-$ctime1

if [ "$mtime_diff" -eq "0" ]; then
   echo "FAIL: mtime not update after mapped write"
fi

if [ "$ctime_diff" -eq "0" ]; then
   echo "FAIL: ctime not update after mapped write"
fi

# success, all done
echo "*** done"
rm -f $seqres.full
status=0