#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2016, Oracle and/or its affiliates.  All Rights Reserved.
#
# FS QA Test No. 328
#
# Ensure that we can't go over the hard block limit when CoWing a 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, filters and checks
. ./common/rc
. ./common/filter
. ./common/reflink
. ./common/quota

# real QA test starts here
_supported_os Linux
_require_scratch_reflink
_require_cp_reflink
_require_xfs_io_command "fiemap"
_require_quota
_require_nobody
_require_odirect
_require_user

rm -f $seqres.full

echo "Format and mount"
_scratch_mkfs > $seqres.full 2>&1
export MOUNT_OPTIONS="-o usrquota,grpquota $MOUNT_OPTIONS"
_scratch_mount >> $seqres.full 2>&1
quotacheck -u -g $SCRATCH_MNT 2> /dev/null
quotaon $SCRATCH_MNT 2> /dev/null

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

sz=1048576
echo "Create the original files"
$XFS_IO_PROG -f -c "pwrite -S 0x61 -b $sz 0 $sz" $testdir/file1 >> $seqres.full
chown $qa_user $testdir/file1
_cp_reflink $testdir/file1 $testdir/file2 >> $seqres.full
_cp_reflink $testdir/file1 $testdir/file3 >> $seqres.full
_report_quota_blocks $SCRATCH_MNT
_scratch_cycle_mount
quotaon $SCRATCH_MNT 2> /dev/null

echo "Set hard quota to prevent rewrite"
setquota -u $qa_user 0 1024 0 0 $SCRATCH_MNT
_report_quota_blocks $SCRATCH_MNT

echo "Try to dio write the whole file"
su $qa_user -c '$XFS_IO_PROG -d -c "pwrite 0 '$((sz+65536))'" '$testdir'/file1' 2>&1 >> $seqres.full | \
	_filter_xfs_io_error
_report_quota_blocks $SCRATCH_MNT

echo "Try to write the whole file"
su $qa_user -c '$XFS_IO_PROG -c "pwrite 0 '$((sz+65536))'" '$testdir'/file1' 2>&1 >> $seqres.full | \
	_filter_xfs_io_error
_report_quota_blocks $SCRATCH_MNT

echo "Set hard quota to allow rewrite"
setquota -u $qa_user 0 8192 0 0 $SCRATCH_MNT
_report_quota_blocks $SCRATCH_MNT

echo "Try to dio write the whole file"
_pwrite_byte 0x62 0 $sz $testdir/file1 -d >> $seqres.full
sync
_report_quota_blocks $SCRATCH_MNT

echo "Try to write the whole file"
_pwrite_byte 0x62 0 $sz $testdir/file3 >> $seqres.full
sync
_report_quota_blocks $SCRATCH_MNT

# success, all done
status=0
exit