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 #define _XOPEN_SOURCE 600 20 21 #include <signal.h> 22 #include <stdio.h> 23 #include <stdlib.h> 24 #include "posixtest.h" 25 26 stack_t alt_ss; 27 28 void handler(int signo) 29 { 30 stack_t ss; 31 32 printf("Caught SIGUSR2\n"); 33 34 if (sigaltstack(NULL, &ss) == -1) { 35 perror("Unexpected error while attempting to setup test " 36 "pre-conditions"); 37 exit(-1); 38 } 39 40 if (ss.ss_sp != alt_ss.ss_sp || ss.ss_size != alt_ss.ss_size) { 41 printf("Test FAILED\n"); 42 exit(-1); 43 } 44 } 45 46 int main(void) 47 { 48 struct sigaction act; 49 50 act.sa_handler = handler; 51 act.sa_flags = SA_ONSTACK; 52 sigemptyset(&act.sa_mask); 53 if (sigaction(SIGUSR2, &act, 0) == -1) { 54 perror("Unexpected error while attempting to setup test " 55 "pre-conditions"); 56 return PTS_UNRESOLVED; 57 } 58 59 if ((alt_ss.ss_sp = malloc(SIGSTKSZ)) == NULL) { 60 perror("Unexpected error while attempting to setup test " 61 "pre-conditions"); 62 return PTS_UNRESOLVED; 63 } 64 alt_ss.ss_size = SIGSTKSZ; 65 alt_ss.ss_flags = 0; 66 67 if (sigaltstack(&alt_ss, NULL) == -1) { 68 perror("Unexpected error while attempting to setup test " 69 "pre-conditions"); 70 return PTS_UNRESOLVED; 71 } 72 73 if (raise(SIGUSR2) == -1) { 74 perror("Unexpected error while attempting to setup test " 75 "pre-conditions"); 76 return PTS_UNRESOLVED; 77 } 78 79 printf("Test PASSED\n"); 80 return PTS_PASS; 81 } 82
