[LTP] [PATCH] sigsuspend: Add testcase for EFAULT

[Ma Xinjian]

Add a testcase with the mask parameter points to an invalid address.

Signed-off-by: Ma Xinjian <maxj.fnst@fujitsu.com>
---
 runtest/syscalls                              |  1 +
 .../kernel/syscalls/sigsuspend/.gitignore     |  1 +
 .../kernel/syscalls/sigsuspend/sigsuspend02.c | 34 +++++++++++++++++++
 3 files changed, 36 insertions(+)
 create mode 100644 testcases/kernel/syscalls/sigsuspend/sigsuspend02.c

diff --git a/runtest/syscalls b/runtest/syscalls
index b6cadb2df..373f4d2e6 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -1496,6 +1496,7 @@ sigprocmask01 sigprocmask01
 sigrelse01 sigrelse01
 
 sigsuspend01 sigsuspend01
+sigsuspend02 sigsuspend02
 
 sigtimedwait01 sigtimedwait01
 
diff --git a/testcases/kernel/syscalls/sigsuspend/.gitignore b/testcases/kernel/syscalls/sigsuspend/.gitignore
index 46ea52f73..926b73571 100644
--- a/testcases/kernel/syscalls/sigsuspend/.gitignore
+++ b/testcases/kernel/syscalls/sigsuspend/.gitignore
@@ -1 +1,2 @@
 /sigsuspend01
+/sigsuspend02
diff --git a/testcases/kernel/syscalls/sigsuspend/sigsuspend02.c b/testcases/kernel/syscalls/sigsuspend/sigsuspend02.c
new file mode 100644
index 000000000..5bfed9d2d
--- /dev/null
+++ b/testcases/kernel/syscalls/sigsuspend/sigsuspend02.c
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2024 FUJITSU LIMITED. All Rights Reserved.
+ * Copyright (c) Linux Test Project, 2024
+ * Author: Ma Xinjian <maxj.fnst@fujitsu.com>
+
+/*\
+ * [Description]
+ *
+ * Verify that sigsuspend(2) fails with
+ *
+ * - EFAULT mask points to memory which is not a valid part of the
+ *          process address space.
+ */
+
+#include "tst_test.h"
+
+static void *invalid_mask;
+
+static void setup(void)
+{
+        invalid_mask = tst_get_bad_addr(NULL);
+}
+
+static void verify_sigsuspend(void)
+{
+        TST_EXP_FAIL(sigsuspend(invalid_mask), EFAULT);
+}
+
+static struct tst_test test = {
+        .test_all = verify_sigsuspend,
+        .setup = setup,
+};
+
-- 
2.18.1