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.
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 */
20
21 #define _XOPEN_REALTIME 1
22 #define SIGTOTEST SIGRTMIN
23 #define NUMCALLS 5
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
32 static volatile int counter;
33
myhandler(int signo LTP_ATTRIBUTE_UNUSED,siginfo_t * info LTP_ATTRIBUTE_UNUSED,void * context LTP_ATTRIBUTE_UNUSED)34 void myhandler(int signo LTP_ATTRIBUTE_UNUSED,
35 siginfo_t *info LTP_ATTRIBUTE_UNUSED,
36 void *context LTP_ATTRIBUTE_UNUSED)
37 {
38 counter++;
39 }
40
main(void)41 int main(void)
42 {
43 int pid, i;
44 union sigval value;
45 struct sigaction act;
46
47 act.sa_flags = SA_SIGINFO;
48 act.sa_sigaction = myhandler;
49 sigemptyset(&act.sa_mask);
50 sigaction(SIGTOTEST, &act, 0);
51
52 pid = getpid();
53
54 sighold(SIGTOTEST);
55
56 for (i = 0; i < NUMCALLS; i++) {
57 value.sival_int = i; /* i is just an arbitrary value */
58 if (sigqueue(pid, SIGTOTEST, value) != 0) {
59 printf
60 ("Test UNRESOLVED: call to sigqueue did not return success\n");
61 return PTS_UNRESOLVED;
62 }
63 }
64
65 if (0 != counter) {
66 printf
67 ("Test UNRESOLVED: handler called even though %d has not been removed from the signal mask\n",
68 SIGTOTEST);
69 return PTS_UNRESOLVED;
70 }
71
72 sigrelse(SIGTOTEST);
73
74 if (NUMCALLS != counter) {
75 printf
76 ("Test FAILED: %d was queued %d time(s) even though sigqueue was called %d time(s) for %d\n",
77 SIGTOTEST, counter, NUMCALLS, SIGTOTEST);
78 return PTS_FAIL;
79 }
80 return PTS_PASS;
81 }
82