tests/generic/712

#! /bin/bash
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (c) 2022 Oracle.  All Rights Reserved.
#
# FS QA Test No. 712
#
# Make sure that exchangerange modifies ctime and not mtime of the file.

. ./common/preamble
_begin_fstest auto quick fiexchange

# Override the default cleanup function.
_cleanup()
{
	cd /
	rm -r -f $tmp.* $dir
}

# Import common functions.
. ./common/filter

_require_test_program punch-alternating
_require_xfs_io_command exchangerange
_require_test

dir=$TEST_DIR/test-$seq
mkdir -p $dir

# Set up initial files
$XFS_IO_PROG -f -c 'pwrite -S 0x58 0 256k -b 1m' $dir/a >> $seqres.full
$here/src/punch-alternating $dir/a
$XFS_IO_PROG -f -c 'pwrite -S 0x59 0 256k -b 1m' $dir/b >> $seqres.full

# Snapshot the 'a' file before we swap
echo before >> $seqres.full
md5sum $dir/a $dir/b >> $seqres.full
old_mtime="$(echo $(stat -c '%y' $dir/a $dir/b))"
old_ctime="$(echo $(stat -c '%z' $dir/a $dir/b))"
stat -c '%y %Y %z %Z' $dir/a $dir/b >> $seqres.full

# Now try to exchangerange
$XFS_IO_PROG -c "exchangerange $dir/b" $dir/a

# Snapshot the 'a' file after we swap
echo after >> $seqres.full
md5sum $dir/a $dir/b >> $seqres.full
new_mtime="$(echo $(stat -c '%y' $dir/a $dir/b))"
new_ctime="$(echo $(stat -c '%z' $dir/a $dir/b))"
stat -c '%y %Y %z %Z' $dir/a $dir/b >> $seqres.full

test "$new_mtime" = "$old_mtime" && echo "mtime: $new_mtime == $old_mtime"
test "$new_ctime" = "$old_ctime" && echo "ctime: $new_ctime == $old_ctime"

# success, all done
echo Silence is golden.
status=0
exit