rt_sigqueueinfo02: Add negative tests for rt_sigqueueinfo

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

Signed-off-by: Ma Xinjian <[email protected]>
Reviewed-by: Cyril Hrubis <[email protected]>

runtest/syscalls

@@ -1229,6 +1229,7 @@ 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

testcases/kernel/syscalls/rt_sigqueueinfo/.gitignore

@@ -1 +1,2 @@
 /rt_sigqueueinfo01
+/rt_sigqueueinfo02

testcases/kernel/syscalls/rt_sigqueueinfo/rt_sigqueueinfo02.c

@@ -0,0 +1,99 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2024 FUJITSU LIMITED. All Rights Reserved.
+ * Author: Ma Xinjian <[email protected]>
+ */
+
+/*\
+ * [Description]
+ *
+ * Verify that, rt_sigqueueinfo(2) sets errno to
+ *
+ * - EINVAL if sig is invalid
+ * - EPERM if uinfo->si_code is invalid
+ * - ESRCH if 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 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(0);
+}
+
+static void child_do(void)
+{
+	TST_CHECKPOINT_WAIT(0);
+}
+
+static void verify_rt_sigqueueinfo(unsigned int i)
+{
+	struct test_case_t *tc = &tcases[i];
+	pid_t pid = SAFE_FORK();
+
+	if (!pid) {
+		child_do();
+		exit(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,
+	.bufs = (struct tst_buffers []) {
+		{&siginfo_einval, .size = sizeof(siginfo_einval)},
+		{&siginfo_eperm, .size = sizeof(siginfo_eperm)},
+		{&siginfo_esrch, .size = sizeof(siginfo_esrch)},
+		{},
+	}
+};
+
+#else
+	TST_TEST_TCONF("This system does not support rt_sigqueueinfo()");
+#endif /* HAVE_STRUCT_SIGACTION_SA_SIGACTION */