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 *
9 * Updated: 20-06-2011 Peter W. Morreale <pmorreale@novell.com>
10 *
11 * This program tests the assertion that if disp is SIG_HOLD, then the
12 * signal's disposition shall remain unchanged
13 *
14 * Steps:
15 * 1. Register SIGCHLD with myhandler
16 * 2. Add SIGCHLD to the process's signal mask using sigset with disp
17 * equal to SIG_HOLD
18 * 3. raise SIGCHLD
19 * 4. remove SIGCHLD from the signal mask
20 * 5. Verify that the original disposition hasn't been changed, by making
21 * sure that SIGCHLD is still handled by myhandler.
22 */
23
24
25 #include <signal.h>
26 #include <stdio.h>
27 #include <stdlib.h>
28 #include <errno.h>
29 #include <string.h>
30 #include "posixtest.h"
31
32 #define ERR_MSG(f, rc) printf("Failed: func: %s rc: %u errno: %s\n", \
33 f, rc, strerror(errno))
34
35 static int handler_called;
36
myhandler(int signo PTS_ATTRIBUTE_UNUSED)37 static void myhandler(int signo PTS_ATTRIBUTE_UNUSED)
38 {
39 handler_called = 1;
40 }
41
main(void)42 int main(void)
43 {
44 sigset_t pendingset;
45 struct sigaction act;
46 int rc;
47
48 act.sa_handler = myhandler;
49 act.sa_flags = 0;
50 sigemptyset(&act.sa_mask);
51
52 rc = sigaction(SIGCHLD, &act, 0);
53 if (rc) {
54 ERR_MSG("sigaction()", rc);
55 return PTS_UNRESOLVED;
56 }
57
58 if (sigset(SIGCHLD, SIG_HOLD) == SIG_ERR) {
59 perror("Unexpected error while using sigset()");
60 return PTS_UNRESOLVED;
61 }
62
63 raise(SIGCHLD);
64
65 rc = sigpending(&pendingset);
66 if (rc) {
67 ERR_MSG("sigpending()", rc);
68 return PTS_UNRESOLVED;
69 }
70
71 rc = sigismember(&pendingset, SIGCHLD);
72 if (rc != 1) {
73 ERR_MSG("sigismember()", rc);
74 return PTS_UNRESOLVED;
75 }
76
77 sigrelse(SIGCHLD);
78
79 if (!handler_called) {
80 printf("Failed: Signal not delivered\n");
81 return PTS_FAIL;
82 }
83
84 printf("Test PASSED\n");
85 return PTS_PASS;
86 }
87