1 #include <signal.h>
2 #include <stdio.h>
3 #include "posixtest.h"
4
5 /*
6
7 * Copyright (c) 2002, Intel Corporation. All rights reserved.
8 * Created by: rolla.n.selbak REMOVE-THIS AT intel DOT com
9 * This file is licensed under the GPL license. For the full content
10 * of this license, see the COPYING file at the top level of this
11 * source tree.
12
13 * Test that the sigwait() function.
14 * If prior to the call to sigwait() there are multiple pending instances of
15 * a single signal number (and it is implementation-defined that the signal
16 * number DOES NOT support queued signals), then there should be no remaining
17 * pending signals for that signal number.
18 * Steps are:
19 * 1) Block a signal that doesn't support queueing from delivery.
20 * 2) Raise that signal 4 times.
21 * 3) Call sigwait()
22 * 4) Verify it cleared the signal from the pending signals and there
23 * are no signals left in the pending list.
24 *
25 */
26
main(void)27 int main(void)
28 {
29 sigset_t newmask, pendingset;
30 int sig;
31
32 /* Empty set of blocked signals */
33 if ((sigemptyset(&newmask) == -1) || (sigemptyset(&pendingset) == -1)) {
34 printf("Error in sigemptyset()\n");
35 return PTS_UNRESOLVED;
36 }
37
38 /* Add SIGUSR2 to the set of blocked signals */
39 if (sigaddset(&newmask, SIGUSR2) == -1) {
40 perror("Error in sigaddset()\n");
41 return PTS_UNRESOLVED;
42 }
43
44 /* Block SIGUSR2 */
45 if (sigprocmask(SIG_SETMASK, &newmask, NULL) == -1) {
46 printf("Error in sigprocmask()\n");
47 return PTS_UNRESOLVED;
48 }
49
50 /* Send SIGUSR2 signal 4 times to this process. Since it is blocked,
51 * it should be pending. */
52 if (raise(SIGUSR2) != 0) {
53 printf("Could not raise SIGUSR2\n");
54 return PTS_UNRESOLVED;
55 }
56 if (raise(SIGUSR2) != 0) {
57 printf("Could not raise SIGUSR2\n");
58 return PTS_UNRESOLVED;
59 }
60 if (raise(SIGUSR2) != 0) {
61 printf("Could not raise SIGUSR2\n");
62 return PTS_UNRESOLVED;
63 }
64 if (raise(SIGUSR2) != 0) {
65 printf("Could not raise SIGUSR2\n");
66 return PTS_UNRESOLVED;
67 }
68
69 /* Obtain a set of pending signals */
70 if (sigpending(&pendingset) == -1) {
71 printf("Error calling sigpending()\n");
72 return PTS_UNRESOLVED;
73 }
74
75 /* Make sure SIGUSR2 is pending */
76 if (sigismember(&pendingset, SIGUSR2) == 0) {
77 printf("Error: signal SIGUSR2 not pending\n");
78 return PTS_UNRESOLVED;
79 }
80
81 /* Call sigwait */
82 if (sigwait(&newmask, &sig) != 0) {
83 printf("Error in sigwait\n");
84 return PTS_UNRESOLVED;
85 }
86
87 /* Make sure SIGUSR2 is not in the pending list anymore */
88 if (sigpending(&pendingset) == -1) {
89 printf("Error calling sigpending()\n");
90 return PTS_UNRESOLVED;
91 }
92
93 if (sigismember(&pendingset, SIGUSR2) == 1) {
94 printf("Test FAILED\n");
95 return PTS_FAIL;
96 }
97
98 printf("Test PASSED\n");
99 return PTS_PASS;
100
101 }
102