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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. 207
#
# Test setting the extsz and cowextsz hints:
# - Ensure that we can set both on a zero-byte file.
# - Ensure that we can set only cowextsz on a many-byte file.
# - Ensure that whatever we set we get back later.
#
. ./common/preamble
_begin_fstest auto quick clone fiemap

# Import common functions.
. ./common/filter
. ./common/reflink

# real QA test starts here
_supported_fs xfs
_require_scratch_reflink
_require_cp_reflink
_require_xfs_io_command "fiemap"
_require_xfs_io_command "cowextsize"

# Takes the fsxattr.xflags line,
# i.e. fsxattr.xflags = 0x0 [--------------C-]
# and tests whether a flag character is set
test_xflag()
{
    local flg=$1
    grep -q "\[.*${flg}.*\]" && echo "$flg flag set" || echo "$flg flag unset"
}

echo "Format and mount"
_scratch_mkfs > $seqres.full 2>&1
_scratch_mount >> $seqres.full 2>&1
_xfs_force_bdev data $SCRATCH_MNT

testdir=$SCRATCH_MNT/test-$seq
mkdir $testdir

echo "Create the original files"
$XFS_IO_PROG -f -c "pwrite -S 0x61 0 0" $testdir/file1 >> $seqres.full
$XFS_IO_PROG -f -c "pwrite -S 0x61 0 1048576" $testdir/file2 >> $seqres.full
$XFS_IO_PROG -f -c "pwrite -S 0x61 0 0" $testdir/file3 >> $seqres.full
_scratch_cycle_mount

echo "Set extsz and cowextsz on zero byte file"
$XFS_IO_PROG -c "extsize 1048576" $testdir/file1 | _filter_scratch
$XFS_IO_PROG -c "cowextsize 1048576" $testdir/file1 | _filter_scratch

echo "Set extsz and cowextsz on 1Mbyte file"
$XFS_IO_PROG -c "extsize 1048576" $testdir/file2 | _filter_scratch
$XFS_IO_PROG -c "cowextsize 1048576" $testdir/file2 | _filter_scratch
_scratch_cycle_mount

echo "Check extsz and cowextsz settings on zero byte file"
$XFS_IO_PROG -c "extsize" $testdir/file1 | _filter_scratch
$XFS_IO_PROG -c "cowextsize" $testdir/file1 | _filter_scratch

echo "Check extsz and cowextsz settings on 1Mbyte file"
$XFS_IO_PROG -c "extsize" $testdir/file2 | _filter_scratch
$XFS_IO_PROG -c "cowextsize" $testdir/file2 | _filter_scratch

echo "Set cowextsize and check flag"
$XFS_IO_PROG -c "cowextsize 1048576" $testdir/file3 | _filter_scratch
_scratch_cycle_mount

$XFS_IO_PROG -c "stat" $testdir/file3 | grep 'fsxattr.xflags' | test_xflag "C"
$XFS_IO_PROG -c "cowextsize" $testdir/file3 | _filter_scratch

echo "Unset cowextsize and check flag"
$XFS_IO_PROG -c "cowextsize 0" $testdir/file3 | _filter_scratch
_scratch_cycle_mount

$XFS_IO_PROG -c "stat" $testdir/file3 | grep 'fsxattr.xflags' | test_xflag "C"
$XFS_IO_PROG -c "cowextsize" $testdir/file3 | _filter_scratch

status=0
exit