1/*
2 * Copyright (c) 2003, Intel Corporation. All rights reserved.
3 * Created by:  salwan.searty REMOVE-THIS AT intel DOT com
4 * This file is licensed under the GPL license.  For the full content
5 * of this license, see the COPYING file at the top level of this
6 * source tree.
7
8 Assumption: The test assumes that this program is run under normal conditions,
9 and not when the processor and other resources are too stressed.
10
11 This program checks to see that sigsuspend does not return when sent a signal
12 whose action is to terminate the process.
13
14 Steps:
15 1. Fork() a child.
16 2. Have the parent give the child a 1 second headstart. Have the child suspend itself.
17 3. Have the parent send the child a SIGABRT signal. The default action associated with SIGABRT
18    is to terminate the program. sigsuspend() should not return, and if it does, then have the
19    child return a to the parent with 1 or 2.
20 4. From the parent, verify that the child neither returns 1 or 2.
21
22*/
23
24#include <signal.h>
25#include <sys/types.h>
26#include <sys/wait.h>
27#include <stdio.h>
28#include <stdlib.h>
29#include <unistd.h>
30#include "posixtest.h"
31
32int main(void)
33{
34	pid_t pid;
35	pid = fork();
36
37	if (pid == 0) {
38		/* child */
39
40		sigset_t tempmask;
41
42		sigemptyset(&tempmask);
43
44		printf("suspending child\n");
45		if (sigsuspend(&tempmask) != -1) {
46			perror("sigsuspend error");
47			return 1;
48		}
49
50		printf
51		    ("Test FAILED: Should not have returned from sigsuspend\n");
52		return 2;
53
54	} else {
55		int s;
56		int exit_status;
57
58		/* parent */
59		sleep(1);
60
61		printf("parent sending child a SIGABRT signal\n");
62		kill(pid, SIGABRT);
63
64		if (wait(&s) == -1) {
65			perror("Unexpected error while setting up test "
66			       "pre-conditions");
67			return PTS_UNRESOLVED;
68		}
69
70		exit_status = WEXITSTATUS(s);
71
72		printf("Exit status from child is %d\n", exit_status);
73
74		if (exit_status == 1) {
75			printf
76			    ("Test UNRESOLVED: sigsuspend in child process was not successful\n");
77			return PTS_UNRESOLVED;
78		}
79
80		if (exit_status == 2) {
81			printf
82			    ("Test FAILED: sigsuspend did not suspend the child\n");
83			return PTS_FAIL;
84		}
85
86		printf("Test PASSED\n");
87		return PTS_PASS;
88	}
89}
90