xref: /aosp_15_r20/external/ltp/testcases/kernel/syscalls/waitid/waitid05.c (revision 49cdfc7efb34551c7342be41a7384b9c40d7cab7)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Copyright (c) Crackerjack Project., 2007
4  * Copyright (c) Manas Kumar Nayak [email protected]>
5  * Copyright (C) 2021 SUSE LLC Andrea Cervesato <[email protected]>
6  */
7 
8 /*\
9  * [Description]
10  *
11  * Tests if waitid() filters children correctly by the group ID.
12  *
13  * - waitid() with GID + 1 returns ECHILD
14  * - waitid() with GID returns correct data
15  */
16 
17 #include <stdlib.h>
18 #include <sys/wait.h>
19 #include "tst_test.h"
20 
21 static siginfo_t *infop;
22 
run(void)23 static void run(void)
24 {
25 	pid_t pid_group;
26 	pid_t pid_child;
27 
28 	pid_child = SAFE_FORK();
29 	if (!pid_child)
30 		exit(0);
31 
32 	pid_group = getpgid(0);
33 
34 	TST_EXP_FAIL(waitid(P_PGID, pid_group+1, infop, WEXITED), ECHILD);
35 
36 	memset(infop, 0, sizeof(*infop));
37 	TST_EXP_PASS(waitid(P_PGID, pid_group, infop, WEXITED));
38 
39 	TST_EXP_EQ_LI(infop->si_pid, pid_child);
40 	TST_EXP_EQ_LI(infop->si_status, 0);
41 	TST_EXP_EQ_LI(infop->si_signo, SIGCHLD);
42 	TST_EXP_EQ_LI(infop->si_code, CLD_EXITED);
43 }
44 
45 static struct tst_test test = {
46 	.test_all = run,
47 	.forks_child = 1,
48 	.bufs = (struct tst_buffers[]) {
49 		{&infop, .size = sizeof(*infop)},
50 		{}
51 	}
52 };
53