[LTP] [PATCH v4 2/2] Add unlink10 test

[Andrea Cervesato <andrea.cervesato@suse.de>]

From: Andrea Cervesato <andrea.cervesato@suse.com>

This test verifies that unlink(2) fails with EROFS when target file
is on a read-only filesystem.

Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>
---
 runtest/syscalls                            |  1 +
 testcases/kernel/syscalls/unlink/.gitignore |  1 +
 testcases/kernel/syscalls/unlink/unlink10.c | 33 +++++++++++++++++++++++++++++
 3 files changed, 35 insertions(+)

diff --git a/runtest/syscalls b/runtest/syscalls
index 44a577db3..b6cadb2df 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -1658,6 +1658,7 @@ unlink05 unlink05
 unlink07 unlink07
 unlink08 unlink08
 unlink09 unlink09
+unlink10 unlink10
 
 #unlinkat test cases
 unlinkat01 unlinkat01
diff --git a/testcases/kernel/syscalls/unlink/.gitignore b/testcases/kernel/syscalls/unlink/.gitignore
index 6038cc29d..4fc24059a 100644
--- a/testcases/kernel/syscalls/unlink/.gitignore
+++ b/testcases/kernel/syscalls/unlink/.gitignore
@@ -2,3 +2,4 @@
 /unlink07
 /unlink08
 /unlink09
+/unlink10
diff --git a/testcases/kernel/syscalls/unlink/unlink10.c b/testcases/kernel/syscalls/unlink/unlink10.c
new file mode 100644
index 000000000..861f24a50
--- /dev/null
+++ b/testcases/kernel/syscalls/unlink/unlink10.c
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2024 FUJITSU LIMITED. All Rights Reserved.
+ * Author: Yang Xu <xuyang2018.jy@fujitsu.com>
+ * Copyright (C) 2024 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
+ */
+
+/*\
+ * [Description]
+ *
+ * Verify that unlink(2) fails with EROFS when target file is on a read-only
+ * filesystem.
+ */
+
+#include <sys/ioctl.h>
+#include "tst_test.h"
+#include "lapi/fs.h"
+
+#define MNTPOINT "erofs"
+#define FILENAME MNTPOINT"/file"
+
+static void run(void)
+{
+	TST_EXP_FAIL(unlink(FILENAME), EROFS,
+		"%s", "target file in read-only filesystem");
+}
+
+static struct tst_test test = {
+	.test_all = run,
+	.needs_rofs = 1,
+	.needs_root = 1,
+	.mntpoint = MNTPOINT,
+};

-- 
2.43.0


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