| /* |
| * Copyright (c) 2002-2003, Intel Corporation. All rights reserved. |
| * Created by: salwan.searty REMOVE-THIS AT intel DOT com |
| * This file is licensed under the GPL license. For the full content |
| * of this license, see the COPYING file at the top level of this |
| * source tree. |
| |
| This program tests the assertion that oss points to the alternate structure |
| that was in effect prior to the call to sigaltstack. |
| |
| */ |
| |
| |
| #include <signal.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include "posixtest.h" |
| |
| #define SIGTOTEST SIGUSR1 |
| |
| void handler() |
| { |
| printf("Do nothing useful\n"); |
| } |
| |
| int main(void) |
| { |
| |
| stack_t alternate_s, current_s; |
| struct sigaction act; |
| act.sa_flags = SA_ONSTACK; |
| act.sa_handler = handler; |
| sigemptyset(&act.sa_mask); |
| |
| if (sigaction(SIGUSR1, &act, 0) == -1) { |
| perror |
| ("Unexpected error while attempting to setup test pre-conditions"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if ((alternate_s.ss_sp = malloc(SIGSTKSZ)) == NULL) { |
| perror |
| ("Unexpected error while attempting to setup test pre-conditions"); |
| return PTS_UNRESOLVED; |
| } |
| |
| alternate_s.ss_flags = 0; |
| alternate_s.ss_size = SIGSTKSZ; |
| |
| if (sigaltstack(&alternate_s, NULL) == -1) { |
| perror |
| ("Unexpected error while attempting to setup test pre-conditions"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (sigaltstack(NULL, ¤t_s) == -1) { |
| perror |
| ("Unexpected error while attempting to setup test pre-conditions"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (current_s.ss_sp != alternate_s.ss_sp) { |
| printf |
| ("Test FAILED: ss_sp of the alternate stack is not same as the defined one\n"); |
| exit(PTS_FAIL); |
| } |
| |
| if (current_s.ss_size != alternate_s.ss_size) { |
| printf |
| ("Test FAILED: ss_size of the alternate stack is not same as the defined one\n"); |
| exit(PTS_FAIL); |
| } |
| |
| printf("Test PASSED\n"); |
| return PTS_PASS; |
| } |