[PATCH v2] xfs: test mkfs.xfs whether terminate getsubopt arrays properly

[Yang Xu <xuyang2018.jy@fujitsu.com>]

When I run xfs/144 manually, the step as below:
mkfs.xfs -f -d agcount=3200,size=6366g -d file,n

I accidentally pressed the Enter key, it triggers Segmentation fault.
Then I found Darrick has fixed this one week ago. So add this test.

Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Yang Xu <xuyang2018.jy@fujitsu.com>
---
 tests/xfs/549     | 29 +++++++++++++++++++++++++++++
 tests/xfs/549.out |  2 ++
 2 files changed, 31 insertions(+)
 create mode 100755 tests/xfs/549
 create mode 100644 tests/xfs/549.out

diff --git a/tests/xfs/549 b/tests/xfs/549
new file mode 100755
index 00000000..7d4fc8cf
--- /dev/null
+++ b/tests/xfs/549
@@ -0,0 +1,29 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2022 FUJITSU LIMITED. All rights reserved.
+#
+# FS QA Test 549
+#
+# Regression test for xfsprogs commit
+# 50dba8189b1f ("mkfs: terminate getsubopt arrays properly")
+#
+# This case test mkfs.xfs whether can terminate getsubopt arrays properly.
+# If not, it will trigger segmentation fault.
+#
+
+. ./common/preamble
+_begin_fstest auto quick mkfs
+
+# real QA test starts here
+_supported_fs xfs
+_fixed_by_git_commit xfsprogs 50dba8189b1f \
+	"mkfs: terminate getsubopt arrays properly"
+_require_test
+
+$MKFS_XFS_PROG -f -d agcount=4 -d garbage=0 >> $seqres.full  2>&1
+
+echo "Silence is golden"
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/549.out b/tests/xfs/549.out
new file mode 100644
index 00000000..4e3acd3f
--- /dev/null
+++ b/tests/xfs/549.out
@@ -0,0 +1,2 @@
+QA output created by 549
+Silence is golden
-- 
2.23.0