#! /bin/bash
# FSQA Test No. 166
#
# ->page-mkwrite test - unwritten extents and mmap
#
#-----------------------------------------------------------------------
# Copyright (c) 2007 Silicon Graphics, Inc.  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
#
#-----------------------------------------------------------------------
#
# creator
owner=dgc@sgi.com

seq=`basename $0`
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
rm -f $seq.full

_cleanup()
{
    _cleanup_testdir
}

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

# assumes 1st, 3rd and 5th blocks are single written blocks,
# the others are unwritten.
_filter_blocks()
{
	$AWK_PROG '
/^ +[0-9]/ {
	if (!written_size) {
		written_size = $6
		unwritten1 = ((1048576/512) / 2) - written_size
		unwritten2 = ((1048576/512) / 2) - 2 * written_size
	}

	# is the extent unwritten?
	unwritten_ext = 0;
	if ($7 >= 10000)
		unwritten_ext = 1;

	size = "RIGHT"
	flags = "GOOD"
	if (unwritten_ext) {
		if (unwritten1) {
			if ($6 != unwritten1)
				size = "WRONG"
			unwritten1 = 0;
		} else if ($6 != unwritten2) {
			size = "WRONG"
		}
	} else {
		if ($6 != written_size)
			size = "WRONG"
	}
	print $1, "[AA..BB]", "XX..YY", "AG", "(AA..BB)", size, flags
}'
}

# real QA test starts here
_supported_fs xfs
_supported_os Linux

_setup_testdir
_require_scratch
_scratch_mkfs_xfs >/dev/null 2>&1
_scratch_mount

TEST_FILE=$SCRATCH_MNT/test_file
TEST_PROG=$here/src/unwritten_mmap
FILE_SIZE=1048576

rm -f $TEST_FILE
$TEST_PROG $FILE_SIZE $TEST_FILE

xfs_bmap -vp $TEST_FILE >> $seq.full
xfs_bmap -vp $TEST_FILE | _filter_blocks

status=0
exit