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 if SA_SIGINFO is set, then the
9 signal shall be queued to the receiving process and that sigqueue returns 0.
10
11 Steps:
12 - Register for myhandler to be called when SIGTOTEST is called, and make
13 sure SA_SIGINFO is set.
14 - Block signal SIGTOTEST from the process.
15 - Using sigqueue(), send NUMCALLS instances of SIGTOTEST to the current
16 process.
17 - Call sigwaitinfo() NUMCALLS times, and verify that the queued signals are
18 selected in FIFO order.
19
20 */
21
22 #define _XOPEN_REALTIME 1
23 #define SIGTOTEST SIGRTMIN
24 #define NUMCALLS 5
25
26 #include <signal.h>
27 #include <stdio.h>
28 #include <unistd.h>
29 #include <stdlib.h>
30 #include <errno.h>
31 #include "posixtest.h"
32
33 int counter = 0;
34
myhandler(int signo,siginfo_t * info,void * context)35 void myhandler(int signo, siginfo_t * info, void *context)
36 {
37 counter++;
38 }
39
main(void)40 int main(void)
41 {
42 int pid, i;
43 union sigval value;
44 struct sigaction act;
45 sigset_t selectset;
46 siginfo_t info;
47
48 act.sa_flags = SA_SIGINFO;
49 act.sa_sigaction = myhandler;
50 sigemptyset(&act.sa_mask);
51 sigaction(SIGTOTEST, &act, 0);
52
53 pid = getpid();
54
55 sighold(SIGTOTEST);
56
57 for (i = NUMCALLS; i > 0; i--) {
58 value.sival_int = i;
59 if (sigqueue(pid, SIGTOTEST, value) != 0) {
60 printf
61 ("Test FAILED: call to sigqueue did not return success\n");
62 return PTS_FAIL;
63 }
64 }
65
66 sigemptyset(&selectset);
67 sigaddset(&selectset, SIGTOTEST);
68
69 for (i = NUMCALLS; i > 0; i--) {
70 if (sigwaitinfo(&selectset, &info) != SIGTOTEST) {
71 perror
72 ("sigwaitinfo() returned signal other than SIGTOTEST\n");
73 return PTS_UNRESOLVED;
74 }
75 if (info.si_value.sival_int != i) {
76 printf
77 ("Test FAILED: The queued value %d was dequeued before "
78 "the queued value %d even though %d was queued first.\n",
79 info.si_value.sival_int, i, i);
80 return PTS_FAIL;
81 }
82 }
83
84 return PTS_PASS;
85 }
86