1 /* 2 3 * Copyright (c) 2002-2003, Intel Corporation. All rights reserved. 4 * Created by: rusty.lynch REMOVE-THIS AT intel DOT com 5 * This file is licensed under the GPL license. For the full content 6 * of this license, see the COPYING file at the top level of this 7 * source tree. 8 9 Test case for assertion #4 of the sigaction system call that shows 10 that attempting to add SIGKILL can not be added to the signal mask 11 for a signal handler. 12 13 Steps: 14 1. Fork a new process 15 2. (parent) wait for child 16 3. (child) Setup a signal handler for SIGTTIN with SIGKILL added to 17 the signal mask 18 4. (child) raise SIGTTIN 19 5. (child, signal handler) raise SIGKILL 20 5. (child) If still alive then exit -1 21 6. (parent - returning from wait) If child was killed then return success, 22 otherwise fail. 23 */ 24 25 #include <signal.h> 26 #include <stdio.h> 27 #include <stdlib.h> 28 #include <sys/wait.h> 29 #include <unistd.h> 30 #include "posixtest.h" 31 handler(int signo)32void handler(int signo) 33 { 34 raise(SIGKILL); 35 exit(0); 36 } 37 main(void)38int main(void) 39 { 40 if (fork() == 0) { 41 /* child */ 42 43 /* 44 * NOTE: This block of code will return 0 for error 45 * and anything else for success. 46 */ 47 48 struct sigaction act; 49 50 act.sa_handler = handler; 51 act.sa_flags = 0; 52 sigemptyset(&act.sa_mask); 53 sigaddset(&act.sa_mask, SIGKILL); 54 if (sigaction(SIGTTIN, &act, 0) == -1) { 55 perror("Unexpected error while attempting to " 56 "setup test pre-conditions"); 57 return PTS_PASS; 58 } 59 60 if (raise(SIGTTIN) == -1) { 61 perror("Unexpected error while attempting to " 62 "setup test pre-conditions"); 63 } 64 65 return PTS_PASS; 66 } else { 67 int s; 68 69 /* parent */ 70 if (wait(&s) == -1) { 71 perror("Unexpected error while setting up test " 72 "pre-conditions"); 73 return PTS_UNRESOLVED; 74 } 75 76 if (!WIFEXITED(s)) { 77 printf("Test PASSED\n"); 78 return PTS_PASS; 79 } 80 } 81 82 printf("Test FAILED\n"); 83 return PTS_FAIL; 84 } 85