#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2018 Oracle, Inc.  All Rights Reserved.
#
# FS QA Test No. 499
#
# Test a specific sequence of fsx operations that causes an mmap read past
# eof to return nonzero contents.
#
seq=`basename $0`
seqres=$RESULT_DIR/$seq
echo "QA output created by $seq"
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/punch

# real QA test starts here
_supported_fs generic
_supported_os Linux
_require_scratch
_require_xfs_io_command "fcollapse"
_require_xfs_io_command "fzero"

rm -f $seqres.full

_scratch_mkfs >>$seqres.full 2>&1
_scratch_mount

cat >> $tmp.fsxops << ENDL
fallocate 0x77e2 0x5f06 0x269a2 keep_size
mapwrite 0x2e7fc 0x42ba 0x3f989
write 0x67a9 0x714e 0x3f989
write 0x39f96 0x185a 0x3f989
collapse_range 0x36000 0x8000 0x3f989
mapread 0x74c0 0x1bb3 0x3e2d0
truncate 0x0 0x8aa2 0x3e2d0
zero_range 0x1265 0x783d 0x8aa2
mapread 0x7bd8 0xeca 0x8aa2
ENDL

victim=$SCRATCH_MNT/a
touch $victim
$here/ltp/fsx --replay-ops $tmp.fsxops $victim > $tmp.output 2>&1 || cat $tmp.output

echo "Silence is golden"
status=0
exit