xref: /aosp_15_r20/external/ltp/testcases/kernel/syscalls/waitid/waitid03.c (revision 49cdfc7efb34551c7342be41a7384b9c40d7cab7)
1*49cdfc7eSAndroid Build Coastguard Worker // SPDX-License-Identifier: GPL-2.0-or-later
2*49cdfc7eSAndroid Build Coastguard Worker /*
3*49cdfc7eSAndroid Build Coastguard Worker  * Copyright (c) Crackerjack Project., 2007
4*49cdfc7eSAndroid Build Coastguard Worker  * Copyright (c) Manas Kumar Nayak [email protected]>
5*49cdfc7eSAndroid Build Coastguard Worker  * Copyright (C) 2021 SUSE LLC Andrea Cervesato <[email protected]>
6*49cdfc7eSAndroid Build Coastguard Worker  */
7*49cdfc7eSAndroid Build Coastguard Worker 
8*49cdfc7eSAndroid Build Coastguard Worker /*\
9*49cdfc7eSAndroid Build Coastguard Worker  * [Description]
10*49cdfc7eSAndroid Build Coastguard Worker  *
11*49cdfc7eSAndroid Build Coastguard Worker  * Tests if waitid() syscall returns ECHILD when the calling process has no
12*49cdfc7eSAndroid Build Coastguard Worker  * child processes.
13*49cdfc7eSAndroid Build Coastguard Worker  */
14*49cdfc7eSAndroid Build Coastguard Worker 
15*49cdfc7eSAndroid Build Coastguard Worker #include <sys/wait.h>
16*49cdfc7eSAndroid Build Coastguard Worker #include "tst_test.h"
17*49cdfc7eSAndroid Build Coastguard Worker 
18*49cdfc7eSAndroid Build Coastguard Worker static siginfo_t *infop;
19*49cdfc7eSAndroid Build Coastguard Worker 
run(void)20*49cdfc7eSAndroid Build Coastguard Worker static void run(void)
21*49cdfc7eSAndroid Build Coastguard Worker {
22*49cdfc7eSAndroid Build Coastguard Worker 	TST_EXP_FAIL(waitid(P_ALL, 0, infop, WNOHANG | WEXITED), ECHILD);
23*49cdfc7eSAndroid Build Coastguard Worker }
24*49cdfc7eSAndroid Build Coastguard Worker 
25*49cdfc7eSAndroid Build Coastguard Worker static struct tst_test test = {
26*49cdfc7eSAndroid Build Coastguard Worker 	.test_all = run,
27*49cdfc7eSAndroid Build Coastguard Worker 	.bufs = (struct tst_buffers[]) {
28*49cdfc7eSAndroid Build Coastguard Worker 		{&infop, .size = sizeof(*infop)},
29*49cdfc7eSAndroid Build Coastguard Worker 		{}
30*49cdfc7eSAndroid Build Coastguard Worker 	}
31*49cdfc7eSAndroid Build Coastguard Worker };
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