[LTP] [PATCH] rt_sigqueueinfo: Add negative tests for rt_sigqueueinfo

[Ma Xinjian]

Add negative cases for rt_sigqueueinfo(), when errno is EINVAL, EPERM or ESRCH

Signed-off-by: Ma Xinjian <maxj.fnst@fujitsu.com>
---
 runtest/syscalls                              |   1 +
 .../syscalls/rt_sigqueueinfo/.gitignore       |   1 +
 .../rt_sigqueueinfo/rt_sigqueueinfo02.c       | 108 ++++++++++++++++++
 3 files changed, 110 insertions(+)
 create mode 100644 testcases/kernel/syscalls/rt_sigqueueinfo/rt_sigqueueinfo02.c

diff --git a/runtest/syscalls b/runtest/syscalls
index c04359fcd..c6f577de9 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -1200,6 +1200,7 @@ rt_sigaction03 rt_sigaction03
 rt_sigprocmask01 rt_sigprocmask01
 rt_sigprocmask02 rt_sigprocmask02
 rt_sigqueueinfo01 rt_sigqueueinfo01
+rt_sigqueueinfo02 rt_sigqueueinfo02
 rt_sigsuspend01 rt_sigsuspend01
 rt_sigtimedwait01 rt_sigtimedwait01
 rt_tgsigqueueinfo01 rt_tgsigqueueinfo01
diff --git a/testcases/kernel/syscalls/rt_sigqueueinfo/.gitignore b/testcases/kernel/syscalls/rt_sigqueueinfo/.gitignore
index 37cd20621..a26811b08 100644
--- a/testcases/kernel/syscalls/rt_sigqueueinfo/.gitignore
+++ b/testcases/kernel/syscalls/rt_sigqueueinfo/.gitignore
@@ -1 +1,2 @@
 /rt_sigqueueinfo01
+/rt_sigqueueinfo02
diff --git a/testcases/kernel/syscalls/rt_sigqueueinfo/rt_sigqueueinfo02.c b/testcases/kernel/syscalls/rt_sigqueueinfo/rt_sigqueueinfo02.c
new file mode 100644
index 000000000..dc6b42f46
--- /dev/null
+++ b/testcases/kernel/syscalls/rt_sigqueueinfo/rt_sigqueueinfo02.c
@@ -0,0 +1,108 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2024 FUJITSU LIMITED. All Rights Reserved.
+ * Author: Ma Xinjian <maxj.fnst@fujitsu.com>
+ */
+
+/*\
+ * [Description]
+ *
+ * Verify that rt_sigqueueinfo(2) fails with
+ *
+ * - EINVAL when sig is invalid
+ * - EPERM when uinfo->si_code is invalid
+ * - ESRCH when no thread group matching tgid is found
+ */
+#include <pwd.h>
+#include <signal.h>
+#include "config.h"
+#include "tst_test.h"
+
+#ifdef HAVE_STRUCT_SIGACTION_SA_SIGACTION
+#include "rt_sigqueueinfo.h"
+
+static siginfo_t siginfo_einval;
+static siginfo_t siginfo_eperm;
+static siginfo_t siginfo_esrch;
+
+static pid_t tgid_notfound = -1;
+
+static struct test_case_t {
+	pid_t *tgid;
+	int sig;
+	siginfo_t *uinfo;
+	int expected_errno;
+	char *desc;
+} tcases[] = {
+	{NULL, -1, &siginfo_einval, EINVAL, "sig is invalid"},
+	{NULL, SIGUSR1, &siginfo_eperm, EPERM, "uinfo->si_code is invalid"},
+	{&tgid_notfound, SIGUSR1, &siginfo_esrch, ESRCH,
+		"no thread group matching tgid is found"},
+};
+
+static void setup(void)
+{
+	siginfo_einval.si_code = SI_QUEUE;
+	siginfo_eperm.si_code = 0;
+	siginfo_esrch.si_code = SI_QUEUE;
+}
+
+static void sig_handler(int sig)
+{
+	tst_res(TINFO, "Receive signal %s(%d)", tst_strsig(sig), sig);
+}
+
+static void parent_do(struct test_case_t *tc, pid_t pid)
+{
+	pid_t real_pid;
+
+	if (tc->tgid)
+		real_pid = *(tc->tgid);
+	else
+		real_pid = pid;
+
+	TST_EXP_FAIL(sys_rt_sigqueueinfo(real_pid, tc->sig, tc->uinfo),
+		tc->expected_errno, "%s", tc->desc);
+	TST_CHECKPOINT_WAKE(1);
+}
+
+static void child_do(struct test_case_t *tc)
+{
+	struct sigaction sa;
+
+	sa.sa_handler = sig_handler;
+	SAFE_SIGEMPTYSET(&sa.sa_mask);
+	if (tc->sig > 0)
+		SAFE_SIGACTION(tc->sig, &sa, NULL);
+	else
+		SAFE_SIGACTION(SIGUSR1, &sa, NULL);
+
+	TST_CHECKPOINT_WAKE(0);
+	TST_CHECKPOINT_WAIT(1);
+}
+
+static void verify_rt_sigqueueinfo(unsigned int i)
+{
+	struct test_case_t *tc = &tcases[i];
+	pid_t pid = SAFE_FORK();
+
+	if (!pid) {
+		child_do(tc);
+		exit(0);
+	}
+	TST_CHECKPOINT_WAIT(0);
+	parent_do(tc, pid);
+	SAFE_WAITPID(pid, NULL, 0);
+}
+
+static struct tst_test test = {
+	.setup = setup,
+	.tcnt = ARRAY_SIZE(tcases),
+	.test = verify_rt_sigqueueinfo,
+	.forks_child = 1,
+	.needs_checkpoints = 1,
+};
+
+#else
+	TST_TEST_TCONF("This system does not support rt_sigqueueinfo()");
+#endif /* HAVE_STRUCT_SIGACTION_SA_SIGACTION */
-- 
2.39.3