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 #12 of the sigaction system call that verifies 10 signal-catching functions are executed on the alternate stack if the 11 SA_ONSTACK flag is set in the sigaction.sa_flags parameter to the 12 sigaction function call, and an alternate stack has been setup with 13 sigaltstack(). 14 15 NOTE: This test case does not attempt to verify the proper operation 16 of sigaltstack. 17 */ 18 19 20 #include <signal.h> 21 #include <stdio.h> 22 #include <stdlib.h> 23 #include "posixtest.h" 24 25 stack_t alt_ss; 26 handler(int signo)27void handler(int signo) 28 { 29 stack_t ss; 30 31 printf("Caught SIGURG\n"); 32 33 if (sigaltstack(NULL, &ss) == -1) { 34 perror("Unexpected error while attempting to setup test " 35 "pre-conditions"); 36 exit(-1); 37 } 38 39 if (ss.ss_sp != alt_ss.ss_sp || ss.ss_size != alt_ss.ss_size) { 40 printf("Test FAILED\n"); 41 exit(-1); 42 } 43 } 44 main(void)45int main(void) 46 { 47 struct sigaction act; 48 49 act.sa_handler = handler; 50 act.sa_flags = SA_ONSTACK; 51 sigemptyset(&act.sa_mask); 52 if (sigaction(SIGURG, &act, 0) == -1) { 53 perror("Unexpected error while attempting to setup test " 54 "pre-conditions"); 55 return PTS_UNRESOLVED; 56 } 57 58 if ((alt_ss.ss_sp = malloc(SIGSTKSZ)) == NULL) { 59 perror("Unexpected error while attempting to setup test " 60 "pre-conditions"); 61 return PTS_UNRESOLVED; 62 } 63 alt_ss.ss_size = SIGSTKSZ; 64 alt_ss.ss_flags = 0; 65 66 if (sigaltstack(&alt_ss, NULL) == -1) { 67 perror("Unexpected error while attempting to setup test " 68 "pre-conditions"); 69 return PTS_UNRESOLVED; 70 } 71 72 if (raise(SIGURG) == -1) { 73 perror("Unexpected error while attempting to setup test " 74 "pre-conditions"); 75 return PTS_UNRESOLVED; 76 } 77 78 printf("Test PASSED\n"); 79 return PTS_PASS; 80 } 81