| /* |
| * 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 if the ss_flags member is not set to SS_DISABLE, |
| the stack shall be enabled, and the ss_sp and ss_size members specify the new address |
| and size of the stack. |
| |
| Steps: |
| - Set up a handler for signal SIGTOTEST and set the sa_flags member to SA_ONSTACK. |
| - Allocate memory for the alternate signal stack |
| - call sigaltstack() to define the alternate signal stack |
| - raise SIGTOTEST |
| - Inside the handler, use sigaltstack to examine/obtain the current alternate signal |
| stack and verify that the ss_flags member of the obtained alternate signal stack is SS_DISABLE. |
| */ |
| |
| #define _XOPEN_SOURCE 600 |
| |
| #include <signal.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include "posixtest.h" |
| |
| #define SIGTOTEST SIGUSR1 |
| |
| stack_t alternate_s; |
| |
| void handler(int signo) |
| { |
| stack_t handler_s; |
| |
| if (sigaltstack((stack_t *)0, &handler_s) == -1) { |
| perror("Unexpected error while attempting to setup test pre-conditions"); |
| exit(PTS_UNRESOLVED); |
| } |
| |
| if (handler_s.ss_flags != SS_DISABLE) { |
| printf("Test FAILED: The alternate stack's ss_flags member does not contain SS_DISABLE even though the alternate signal stack is disabled.\n"); |
| exit(PTS_FAIL); |
| } |
| } |
| |
| int main() |
| { |
| |
| struct sigaction act; |
| act.sa_flags = SA_ONSTACK; |
| act.sa_handler = handler; |
| sigemptyset(&act.sa_mask); |
| |
| if (sigaction(SIGTOTEST, &act, 0) == -1) { |
| perror("Unexpected error while attempting to setup test pre-conditions"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if ((alternate_s.ss_sp = (void *)malloc(SIGSTKSZ)) == NULL) { |
| perror("Unexpected error while attempting to setup test pre-conditions"); |
| return PTS_UNRESOLVED; |
| } |
| |
| alternate_s.ss_flags = SS_DISABLE; |
| alternate_s.ss_size = SIGSTKSZ; |
| |
| if (sigaltstack(&alternate_s, (stack_t *)0) == -1) { |
| perror("Unexpected error while attempting to setup test pre-conditions"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (raise(SIGTOTEST) == -1) { |
| perror("Unexpected error while attempting to setup test pre-conditions"); |
| return PTS_UNRESOLVED; |
| } |
| |
| printf("Test PASSED\n"); |
| return PTS_PASS; |
| } |