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 - Verify that the handler is executed NUMCALLS times AFTER SIGTOTEST
18 is unblocked.
19 - Verify that sigqueue returns 0.
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 static volatile int counter;
34
myhandler(int signo LTP_ATTRIBUTE_UNUSED,siginfo_t * info LTP_ATTRIBUTE_UNUSED,void * context LTP_ATTRIBUTE_UNUSED)35 void myhandler(int signo LTP_ATTRIBUTE_UNUSED,
36 siginfo_t *info LTP_ATTRIBUTE_UNUSED,
37 void *context LTP_ATTRIBUTE_UNUSED)
38 {
39 counter++;
40 }
41
main(void)42 int main(void)
43 {
44 int pid, i;
45 union sigval value;
46 struct sigaction act;
47
48 act.sa_flags = SA_SIGINFO;
49 act.sa_sigaction = myhandler;
50 sigemptyset(&act.sa_mask);
51 sigaction(SIGTOTEST, &act, 0);
52
53 value.sival_int = 0; /* 0 is just an arbitrary value */
54 pid = getpid();
55
56 sighold(SIGTOTEST);
57
58 for (i = 0; i < NUMCALLS; 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 if (0 != counter) {
67 printf
68 ("Test UNRESOLVED: handler called even though %d has not been removed from the signal mask\n",
69 SIGTOTEST);
70 return PTS_UNRESOLVED;
71 }
72
73 sigrelse(SIGTOTEST);
74
75 if (NUMCALLS != counter) {
76 printf
77 ("Test UNRESOLVED: %d was queued %d time(s) even though sigqueue was called %d time(s) for %d\n",
78 SIGTOTEST, counter, NUMCALLS, SIGTOTEST);
79 return PTS_UNRESOLVED;
80 }
81 return PTS_PASS;
82 }
83