#! /bin/bash
# FS QA Test No. 303
#
# Check that high-offset reflinks work.
#
#-----------------------------------------------------------------------
# Copyright (c) 2016, Oracle and/or its affiliates.  All Rights Reserved.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#-----------------------------------------------------------------------

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.* $testdir
}

# get standard environment, filters and checks
. ./common/rc
. ./common/filter
. ./common/attr
. ./common/reflink

# real QA test starts here
_supported_os Linux
_require_test_reflink
_require_cp_reflink

rm -f $seqres.full

echo "Format and mount"
testdir=$TEST_DIR/test-$seq
mkdir $testdir

echo "Create the original files"
bigoff=9223372036854775806
len=9223372036854775807
bigoff_64k=9223372036854710272	# bigoff rounded down to 64k
$XFS_IO_PROG -f -c "truncate $len" $testdir/file0 >> $seqres.full
test -s $testdir/file0 || _notrun "High offset ftruncate failed"
_pwrite_byte 0x61 $bigoff 1 $testdir/file1 >> $seqres.full
_pwrite_byte 0x61 1048575 1 $testdir/file2 >> $seqres.full

echo "Reflink large single byte file"
_cp_reflink $testdir/file1 $testdir/file3 >> $seqres.full

echo "Reflink large empty file"
_cp_reflink $testdir/file0 $testdir/file4 >> $seqres.full

echo "Reflink past maximum file size in dest file (should fail)"
_reflink_range $testdir/file1 0 $testdir/file5 4611686018427322368 $len >> $seqres.full

echo "Reflink high offset to low offset"
_reflink_range $testdir/file1 $bigoff_64k $testdir/file6 1048576 65535 >> $seqres.full

echo "Reflink past source file EOF (should fail)"
_reflink_range $testdir/file2 524288 $testdir/file7 0 1048576 >> $seqres.full

echo "Reflink max size at nonzero offset (should fail)"
_reflink_range $testdir/file2 524288 $testdir/file8 0 $len >> $seqres.full

echo "Reflink with huge off/len (should fail)"
_reflink_range $testdir/file2 $bigoff_64k $testdir/file9 0 $bigoff_64k >> $seqres.full

echo "Check file creation"
_test_cycle_mount
echo "file3"
$XFS_IO_PROG -c "pread -v -q $bigoff 1" $testdir/file3
echo "file4"
$XFS_IO_PROG -c "pread -v -q $bigoff 1" $testdir/file4
# file5 should fail above
echo "file6"
$XFS_IO_PROG -c "pread -v -q 1114110 1" $testdir/file6
# file7 should fail above

# success, all done
status=0
exit
