#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2017 Netapp, Inc. All rights reserved.
#
# FS QA Test No. 431
#
# Tests vfs_copy_file_range():
#   - Copy a small file
#   - Small copies from various points in the original file
seq=`basename $0`
seqres=$RESULT_DIR/$seq
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

_cleanup()
{
	cd /
	rm -rf $tmp.*
}

# get standard environment
. common/rc
. common/filter

# real QA test starts here
_supported_fs generic

_require_xfs_io_command "copy_range"
_require_test

testdir=$TEST_DIR/test-$seq
rm -rf $testdir
mkdir $testdir
rm -f $seqres.full

echo "Create the original file and then copy"
echo -n "abcde" > $testdir/file
$XFS_IO_PROG -f -c "copy_range $testdir/file" "$testdir/copy"
echo -n "abcde" | cmp $testdir/copy
echo "Original md5sums:"
md5sum $testdir/{file,copy} | _filter_test_dir

echo "Small copies from various points in the original file"
$XFS_IO_PROG -f -c "copy_range -s 0 -l 1      $testdir/file" "$testdir/a"
$XFS_IO_PROG -f -c "copy_range -s 1 -l 1      $testdir/file" "$testdir/b"
$XFS_IO_PROG -f -c "copy_range -s 2 -l 1      $testdir/file" "$testdir/c"
$XFS_IO_PROG -f -c "copy_range -s 3 -l 1      $testdir/file" "$testdir/d"
$XFS_IO_PROG -f -c "copy_range -s 4 -l 1      $testdir/file" "$testdir/e"
$XFS_IO_PROG -f -c "copy_range -s 4 -l 1 -d 1 $testdir/file" "$testdir/f"
$XFS_IO_PROG -f -c "copy_range -s 5 -l 1      $testdir/file" "$testdir/g"
echo -n "a"    | cmp $testdir/a
echo -n "b"    | cmp $testdir/b
echo -n "c"    | cmp $testdir/c
echo -n "d"    | cmp $testdir/d
echo -n "e"    | cmp $testdir/e
echo -en "\0e" | cmp $testdir/f
echo -n ""     | cmp $testdir/g
echo "md5sums after small copies"
md5sum $testdir/{file,a,b,c,d,e,f,g} | _filter_test_dir

#success, all done
status=0
exit