apfstests/tests/generic/246

#! /bin/bash
# FS QA Test No. 246
#
# Check that truncation after failed writes does not zero too much data.
#
# Based on a bug report and testcase from
# Marius Tolzmann <tolzmann@molgen.mpg.de>
#
#-----------------------------------------------------------------------
# Copyright (c) 2010 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`
tmp=/tmp/$$
status=1	# failure is the default!

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

# real QA test starts here
_supported_fs generic
_supported_os Linux
_require_test

file=$TEST_DIR/mmap-writev

_cleanup()
{
	rm -rf $file
	rm -rf $file.NEW
}

trap "_cleanup ; exit \$status" 0 1 2 3 15

echo -n "cccccccccc" > $file
$here/src/t_mmap_writev $file $file.NEW
od -t x2 $file.NEW

status=0
exit $status