1 /* 2 * Copyright (c) 2015-2017 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 #include "tests.h" 29 #include <asm/unistd.h> 30 31 #if defined __powerpc64__ \ 32 || (defined __sparc__ && defined __arch64__) 33 /* Old sigreturn is defined but not implemented in the kernel. */ 34 # undef __NR_sigreturn 35 #endif 36 37 #ifdef __NR_sigreturn 38 39 # include <signal.h> 40 # include <stdio.h> 41 # include <stdlib.h> 42 43 # ifdef ASM_SIGRTMIN 44 # define RT_0 ASM_SIGRTMIN 45 # else 46 /* Linux kernel >= 3.18 defines SIGRTMIN to 32 on all architectures. */ 47 # define RT_0 32 48 # endif 49 50 static void 51 handler(int sig) 52 { 53 } 54 55 int 56 main(void) 57 { 58 static sigset_t set; 59 sigemptyset(&set); 60 sigaddset(&set, SIGINT); 61 sigaddset(&set, SIGUSR2); 62 sigaddset(&set, SIGCHLD); 63 sigaddset(&set, RT_0 + 3); 64 sigaddset(&set, RT_0 + 4); 65 sigaddset(&set, RT_0 + 5); 66 sigaddset(&set, RT_0 + 26); 67 sigaddset(&set, RT_0 + 27); 68 if (sigprocmask(SIG_SETMASK, &set, NULL)) 69 perror_msg_and_fail("sigprocmask"); 70 sigemptyset(&set); 71 72 /* This should result to old sigreturn. */ 73 if (signal(SIGUSR1, handler) == SIG_ERR) 74 perror_msg_and_fail("sigaction"); 75 76 if (raise(SIGUSR1)) 77 perror_msg_and_fail("raise"); 78 79 static const char *const sigs = 80 (SIGUSR2 < SIGCHLD) ? "INT USR2 CHLD" : "INT CHLD USR2"; 81 static const char *const rt_sigs = "RT_3 RT_4 RT_5 RT_26 RT_27"; 82 printf("sigreturn({mask=[%s %s]}) = 0\n", sigs, rt_sigs); 83 84 puts("+++ exited with 0 +++"); 85 return 0; 86 } 87 88 #else 89 90 SKIP_MAIN_UNDEFINED("__NR_sigreturn") 91 92 #endif 93
