#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2020 Fujitsu.  All Rights Reserved.
#
# FS QA Test 047
#
# This is a regression test for kernel patch:
# commit aa2f77920b74 ("ext4: disallow modifying DAX inode flag if inline_data has been set")

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 -f $tmp.*
}

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

# remove previous $seqres.full before test
rm -f $seqres.full

# real QA test starts here
_supported_fs ext4
_require_scratch_dax_mountopt "dax=always"
_require_dax_iflag
_require_scratch_ext4_feature "inline_data"

TESTFILE=$SCRATCH_MNT/testfile

_scratch_mkfs_ext4 -O inline_data > $seqres.full 2>&1

_scratch_mount "-o dax=inode" >> $seqres.full 2>&1

echo "Need to make some inline data..." > $TESTFILE

# It's fine to disallow modifying DAX inode flag on the file which
# has inline_data flag.
if $XFS_IO_PROG -c "chattr +x" $TESTFILE >> $seqres.full 2>&1; then
	_scratch_cycle_mount "dax=inode"
	echo 'Append data' >> $TESTFILE
fi

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