1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (c) International Business Machines Corp., 2001
4 * Copyright (c) 2012-2018 Cyril Hrubis <chrubis@suse.cz>
5 */
6
7/*
8 * wait401 - check that a call to wait4() correctly waits for a child
9 *           process to exit
10 */
11
12#include <stdlib.h>
13#include <errno.h>
14#define _USE_BSD
15#include <sys/types.h>
16#include <sys/resource.h>
17#include <sys/wait.h>
18#include "tst_test.h"
19
20static void run(void)
21{
22	pid_t pid;
23	int status = 1;
24	struct rusage rusage;
25
26	pid = SAFE_FORK();
27	if (!pid) {
28		TST_PROCESS_STATE_WAIT(getppid(), 'S', 0);
29		exit(0);
30	}
31
32	TST_EXP_PID_SILENT(wait4(pid, &status, 0, &rusage), "wait4()");
33	if (!TST_PASS)
34		return;
35
36	if (TST_RET != pid) {
37		tst_res(TFAIL, "wait4() returned wrong pid %li, expected %i",
38			TST_RET, pid);
39	} else {
40		tst_res(TPASS, "wait4() returned correct pid %i", pid);
41	}
42
43	if (!WIFEXITED(status)) {
44		tst_res(TFAIL, "WIFEXITED() not set in status (%s)",
45		        tst_strstatus(status));
46		return;
47	}
48
49	tst_res(TPASS, "WIFEXITED() is set in status");
50
51	if (WEXITSTATUS(status))
52		tst_res(TFAIL, "WEXITSTATUS() != 0 but %i", WEXITSTATUS(status));
53	else
54		tst_res(TPASS, "WEXITSTATUS() == 0");
55
56}
57
58static struct tst_test test = {
59	.forks_child = 1,
60	.test_all = run,
61};
62