1 /* 2 * Copyright (c) 2015 Dmitry V. Levin <ldv (at) 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 41 static void handler(int sig) 42 { 43 } 44 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
