1 /* 2 * Check how strace -e signal=set works. 3 * 4 * Copyright (c) 2016 Dmitry V. Levin <ldv (at) altlinux.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include "tests.h" 31 #include <assert.h> 32 #include <signal.h> 33 #include <stdio.h> 34 #include <stdlib.h> 35 #include <unistd.h> 36 37 static pid_t pid; 38 static uid_t uid; 39 40 static void 41 handler(int sig) 42 { 43 } 44 45 static void 46 test_sig(int signo, const char *name) 47 { 48 const struct sigaction act = { .sa_handler = handler }; 49 50 if (sigaction(signo, &act, NULL)) 51 perror_msg_and_fail("sigaction: %d", signo); 52 53 sigset_t mask; 54 sigemptyset(&mask); 55 sigaddset(&mask, signo); 56 if (sigprocmask(SIG_UNBLOCK, &mask, NULL)) 57 perror_msg_and_fail("sigprocmask: %d", signo); 58 59 if (kill(pid, signo)) 60 perror_msg_and_fail("kill(%d, %d)", pid, signo); 61 62 if (name && *name) 63 printf("--- %s {si_signo=%s, si_code=SI_USER" 64 ", si_pid=%d, si_uid=%d} ---\n", 65 name, name, pid, uid); 66 } 67 68 int 69 main(int ac, const char **av) 70 { 71 assert(ac & 1); 72 73 pid = getpid(); 74 uid = geteuid(); 75 76 int i; 77 for (i = 1; i < ac; i += 2) 78 test_sig(atoi(av[i]), av[i + 1]); 79 80 puts("+++ exited with 0 +++"); 81 return 0; 82 } 83
