| /* |
| * 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 (altstack1) |
| - call sigaltstack() to define the alternate signal stack |
| - raise SIGTOTEST |
| - Inside the handler, try to change the alternate signal stack to altstack2, and verify |
| that the attempt fails. |
| */ |
| |
| #define _XOPEN_SOURCE 600 |
| |
| #include <signal.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include "posixtest.h" |
| |
| #define SIGTOTEST SIGUSR1 |
| |
| static stack_t altstack1; |
| |
| void handler() |
| { |
| stack_t altstack2; |
| |
| if ((altstack2.ss_sp = malloc(SIGSTKSZ)) == NULL) { |
| perror |
| ("Unexpected error while attempting to setup test pre-conditions"); |
| exit(PTS_UNRESOLVED); |
| } |
| |
| altstack2.ss_flags = 0; |
| altstack2.ss_size = SIGSTKSZ; |
| |
| if (sigaltstack(&altstack2, NULL) != -1) { |
| printf |
| ("Test FAILED: Attempt to set change alternate stack while inside handler succeeded.\n"); |
| exit(PTS_FAIL); |
| } |
| } |
| |
| int main(void) |
| { |
| |
| 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 ((altstack1.ss_sp = malloc(SIGSTKSZ)) == NULL) { |
| perror |
| ("Unexpected error while attempting to setup test pre-conditions"); |
| return PTS_UNRESOLVED; |
| } |
| |
| altstack1.ss_flags = 0; |
| altstack1.ss_size = SIGSTKSZ; |
| |
| if (sigaltstack(&altstack1, NULL) == -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; |
| } |