#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2020 Fujitsu.  All Rights Reserved.
#
# FS QA Test 606
#
# By the following cases, verify if statx() can query S_DAX flag
# on regular file correctly.
# 1) With dax=always option, FS_XFLAG_DAX is ignored and S_DAX flag
#    always exists on regular file.
# 2) With dax=inode option, setting/clearing FS_XFLAG_DAX can change
#    S_DAX flag on regular file.
# 3) With dax=never option, FS_XFLAG_DAX is ignored and S_DAX flag
#    never exists on regular 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 -f $tmp.*
}

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

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

_supported_fs generic
_require_scratch_dax_mountopt "dax=always"
_require_dax_iflag
_require_xfs_io_command "statx" "-r"

PARENT_DIR=$SCRATCH_MNT/testdir
TEST_FILE=$PARENT_DIR/testfile

test_s_dax()
{
	local dax_option=$1
	local exp_s_dax1=$2
	local exp_s_dax2=$3

	# Mount with specified dax option
	_scratch_mount "$dax_option"

	# Prepare directory
	mkdir -p $PARENT_DIR

	rm -f $TEST_FILE
	$XFS_IO_PROG -c "chattr +x" $PARENT_DIR
	touch $TEST_FILE
	# Check if setting FS_XFLAG_DAX changes S_DAX flag
	_check_s_dax $TEST_FILE $exp_s_dax1

	rm -f $TEST_FILE
	$XFS_IO_PROG -c "chattr -x" $PARENT_DIR
	touch $TEST_FILE
	# Check if clearing FS_XFLAG_DAX changes S_DAX flag
	_check_s_dax $TEST_FILE $exp_s_dax2

	_scratch_unmount
}

do_tests()
{
	_scratch_mkfs >> $seqres.full 2>&1

	# Mount with specified dax option
	test_s_dax "-o dax=always" 1 1
	test_s_dax "-o dax=never" 0 0
	test_s_dax "-o dax=inode" 1 0
	# Mount without dax option
	export MOUNT_OPTIONS=""
	test_s_dax "" 1 0
}

do_tests

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