1 /*
2 * Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #ifdef HAVE_CONFIG_H
29 # include "config.h"
30 #endif
31 #include <stdlib.h>
32 #include <signal.h>
33
34 #ifdef ASM_SIGRTMIN
35 # define RT_0 ASM_SIGRTMIN
36 #else
37 /* Linux kernel >= 3.18 defines SIGRTMIN to 32 on all architectures. */
38 # define RT_0 32
39 #endif
40
handler(int sig)41 static void handler(int sig)
42 {
43 }
44
main(void)45 int main(void) {
46 sigset_t set;
47 sigemptyset(&set);
48 sigaddset(&set, SIGUSR2);
49 sigaddset(&set, SIGCHLD);
50 sigaddset(&set, RT_0 + 2);
51 sigaddset(&set, RT_0 + 3);
52 sigaddset(&set, RT_0 + 4);
53 sigaddset(&set, RT_0 + 26);
54 sigaddset(&set, RT_0 + 27);
55 sigprocmask(SIG_SETMASK, &set, NULL);
56 signal(SIGUSR1, handler);
57 raise(SIGUSR1);
58 return 0;
59 }
60