1 /*
2 * Copyright (c) 2002-2003, 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 This program tests the assertion that the lowest pending signal will be
9 selected by sigwaitinfo() if there are any multiple pending signals in the
10 range SIGRTMIN to SIGRTMAX.
11
12 Steps:
13 - Register for myhandler to be called when any signal between SIGRTMIN
14 and SIGRTMAX is generated, and make sure SA_SIGINFO is set.
15 - Also, make sure that all of these signals are added to the set that
16 will be passed to sigwaitinfo().
17 - Block all of these signals from the process.
18 - Raise all of these signals using sigqueue.
19 - call sigwaitinfo() and verify that it returns SIGRTMIN
20 */
21
22 #define _XOPEN_SOURCE 600
23 #define _XOPEN_REALTIME 1
24
25 #include <signal.h>
26 #include <stdio.h>
27 #include <unistd.h>
28 #include <stdlib.h>
29 #include <errno.h>
30 #include "posixtest.h"
31
myhandler(int signo,siginfo_t * info,void * context)32 void myhandler(int signo, siginfo_t * info, void *context)
33 {
34 printf("Inside dummy handler\n");
35 }
36
main(void)37 int main(void)
38 {
39 int pid, rtsig;
40 union sigval value;
41 struct sigaction act;
42 sigset_t selectset;
43
44 act.sa_flags = SA_SIGINFO;
45 act.sa_sigaction = myhandler;
46 sigemptyset(&act.sa_mask);
47 sigemptyset(&selectset);
48
49 for (rtsig = SIGRTMAX; rtsig >= SIGRTMIN; rtsig--) {
50 sigaddset(&act.sa_mask, rtsig);
51 sighold(rtsig);
52 sigaddset(&selectset, rtsig);
53 }
54
55 pid = getpid();
56 value.sival_int = 5; /* 5 is just an arbitrary value */
57
58 for (rtsig = SIGRTMAX; rtsig >= SIGRTMIN; rtsig--) {
59 sigaction(rtsig, &act, 0);
60 if (sigqueue(pid, rtsig, value) != 0) {
61 printf
62 ("Test UNRESOLVED: call to sigqueue did not return success\n");
63 return PTS_UNRESOLVED;
64 }
65 }
66
67 if (sigwaitinfo(&selectset, NULL) != SIGRTMIN) {
68 printf
69 ("Test FAILED: sigwaitinfo() did not return the lowest of the multiple pending signals between SIGRTMIN and SIGRTMAX\n");
70 return PTS_FAIL;
71 }
72
73 return PTS_PASS;
74 }
75