1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) International Business Machines Corp., 2001
4 *
5 * Test case to check the basic functionality of kill() when killing an
6 * entire process group with a negative pid.
7 *
8 * HISTORY
9 * 07/2001 Ported by Wayne Boyer
10 */
11
12 #include <sys/types.h>
13 #include <signal.h>
14 #include <sys/wait.h>
15 #include <unistd.h>
16 #include <stdlib.h>
17 #include "tst_test.h"
18
verify_kill(void)19 static void verify_kill(void)
20 {
21 int nsig, i, status;
22
23 if (!SAFE_FORK()) {
24 setpgrp();
25 for (i = 0; i < 5; i++) {
26 if (!SAFE_FORK())
27 pause();
28 }
29
30 TEST(kill(-getpgrp(), SIGKILL));
31 if (TST_RET != 0)
32 tst_res(TFAIL | TTERRNO, "kill failed");
33 exit(0);
34 }
35
36 SAFE_WAITPID(-1, &status, 0);
37 nsig = WTERMSIG(status);
38 if (nsig != SIGKILL) {
39 tst_brk(TFAIL, "wait: unexpected signal %d returned, "
40 "expected SIGKILL(9)", nsig);
41 }
42
43 tst_res(TPASS, "receive expected signal SIGKILL(9)");
44 }
45
46 static struct tst_test test = {
47 .forks_child = 1,
48 .test_all = verify_kill,
49 };
50