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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2016, Oracle and/or its affiliates. All Rights Reserved.
#
# FS QA Test No. 259
#
# fzero a file at midway through a CoW region.
#
# This test is dependent on the system page size, so we cannot use md5 in
# the golden output; we can only compare to a check file.
#
. ./common/preamble
_begin_fstest auto quick clone zero
# Import common functions.
. ./common/filter
. ./common/reflink
# real QA test starts here
_require_scratch_reflink
_require_cp_reflink
_require_xfs_io_command "fzero"
echo "Format and mount"
_scratch_mkfs > $seqres.full 2>&1
_scratch_mount >> $seqres.full 2>&1
testdir=$SCRATCH_MNT/test-$seq
mkdir $testdir
blksz=65536
nr=5
filesize=$((blksz * nr))
echo "Create the original files"
_pwrite_byte 0x61 0 $filesize $testdir/file1 >> $seqres.full
_cp_reflink $testdir/file1 $testdir/file2 >> $seqres.full
_pwrite_byte 0x61 0 $filesize $testdir/file2.chk >> $seqres.full
_scratch_cycle_mount
echo "Compare files"
md5sum $testdir/file1 | _filter_scratch
md5sum $testdir/file2 | _filter_scratch
md5sum $testdir/file2.chk | _filter_scratch
echo "CoW and unmount"
$XFS_IO_PROG -f -c "pwrite -S 0x62 -b $((blksz * 3)) $blksz $((blksz * 3))" -c "fzero $((blksz * 2)) $blksz" $testdir/file2 >> $seqres.full
_scratch_cycle_mount
$XFS_IO_PROG -f -c "pwrite -S 0x62 -b $((blksz * 3)) $blksz $((blksz * 3))" -c "pwrite -S 0x00 $((blksz * 2)) $blksz" $testdir/file2.chk >> $seqres.full
_scratch_cycle_mount
echo "Compare files"
md5sum $testdir/file1 | _filter_scratch
md5sum $testdir/file2 | _filter_scratch
md5sum $testdir/file2.chk | _filter_scratch
# success, all done
status=0
exit
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