1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (c) Crackerjack Project., 2007
4 * Copyright (c) Manas Kumar Nayak maknayak@in.ibm.com>
5 * Copyright (C) 2021 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
6 */
7
8/*\
9 * [Description]
10 *
11 * This test if waitid() syscall leaves the si_pid set to 0 with WNOHANG flag
12 * when no child was waited for.
13 */
14
15#include <sys/wait.h>
16#include "tst_test.h"
17
18static siginfo_t *infop;
19
20static void run(void)
21{
22	pid_t pid_child;
23
24	pid_child = SAFE_FORK();
25	if (!pid_child) {
26		TST_CHECKPOINT_WAIT(0);
27		return;
28	}
29
30	memset(infop, 0, sizeof(*infop));
31	TST_EXP_PASS(waitid(P_ALL, pid_child, infop, WNOHANG | WEXITED));
32
33	TST_EXP_EQ_LI(infop->si_pid, 0);
34
35	TST_CHECKPOINT_WAKE(0);
36}
37
38static struct tst_test test = {
39	.test_all = run,
40	.forks_child = 1,
41	.needs_checkpoints = 1,
42	.bufs = (struct tst_buffers[]) {
43		{&infop, .size = sizeof(*infop)},
44		{}
45	}
46};
47