1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (c) International Business Machines  Corp., 2001
4 *
5 * 1) kill() fails with errno set to EINVAL if given an invalid signal.
6 * 2) kill() fails with errno set to ESRCH if given a non-existent pid.
7 * 3) kill() fails with errno set to ESRCH if the given pid is INT_MIN.
8 *
9 * HISTORY
10 *	07/2001 Ported by Wayne Boyer
11 */
12
13#include <sys/types.h>
14#include <signal.h>
15#include <unistd.h>
16#include "tst_test.h"
17
18static pid_t real_pid, fake_pid, int_min_pid;
19
20static struct tcase {
21	int test_sig;
22	int exp_errno;
23	pid_t *pid;
24} tcases[] = {
25	{2000, EINVAL, &real_pid},
26	{SIGKILL, ESRCH, &fake_pid},
27	{SIGKILL, ESRCH, &int_min_pid}
28};
29
30static void verify_kill(unsigned int n)
31{
32	struct tcase *tc = &tcases[n];
33
34	TEST(kill(*tc->pid, tc->test_sig));
35	if (TST_RET != -1) {
36		tst_res(TFAIL, "kill should fail but not, return %ld", TST_RET);
37		return;
38	}
39
40	if (tc->exp_errno == TST_ERR)
41		tst_res(TPASS | TTERRNO, "kill failed as expected");
42	else
43		tst_res(TFAIL | TTERRNO, "kill expected %s but got",
44			tst_strerrno(tc->exp_errno));
45}
46
47static void setup(void)
48{
49	real_pid = getpid();
50	fake_pid = tst_get_unused_pid();
51	int_min_pid = INT_MIN;
52}
53
54static struct tst_test test = {
55	.test = verify_kill,
56	.tcnt = ARRAY_SIZE(tcases),
57	.setup = setup,
58};
59