1/*
2 * Copyright (c) International Business Machines  Corp., 2001
3 *
4 * This program is free software;  you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY;  without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
12 * the GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program.
16 *
17 * History
18 *	07/2001 John George
19 *		-Ported
20 *      04/2002 wjhuie sigset cleanups
21 */
22
23/*
24 * DESCRIPTION
25 *	Tests to see if pids returned from fork and waitpid are same.
26 *
27 * ALGORITHM
28 *	Check proper functioning of waitpid with pid = -1 and arg = WNOHANG
29 */
30
31#include "waitpid_common.h"
32
33static void do_child_1(void)
34{
35	pid_t pid;
36	int i;
37	int status;
38
39	for (i = 0; i < MAXKIDS; i++) {
40		if (i == (MAXKIDS / 2))
41			SAFE_SETPGID(0, 0);
42
43		pid = SAFE_FORK();
44		if (pid == 0)
45			do_exit(0);
46
47		fork_kid_pid[i] = pid;
48	}
49
50	/* Check that waitpid with WNOHANG returns zero */
51	if (TST_TRACE(waitpid_ret_test(-1, &status, WNOHANG, 0, 0)))
52		return;
53
54	TST_CHECKPOINT_WAKE2(0, MAXKIDS);
55
56	if (TST_TRACE(reap_children(-1, WNOHANG, fork_kid_pid, MAXKIDS)))
57		return;
58
59	tst_res(TPASS, "Test PASSED");
60}
61
62static struct tst_test test = {
63	.forks_child = 1,
64	.needs_checkpoints = 1,
65	.setup = waitpid_setup,
66	.cleanup = waitpid_cleanup,
67	.test_all = waitpid_test,
68};
69