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/*
* Copyright (C) 2010 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <sys/wait.h>
#include <sys/resource.h>
/* A very simple program used to test constructor and destructor functions
* in executables (instead of shared libraries).
*/
int x = 0;
/* Initialize x to 1 when the program starts. This will be checked
* later by the main() function.
*/
static void __attribute__((constructor))
on_load(void)
{
x = 1;
}
/* Crash intentionally if 'x' is set to 1 */
static void __attribute__((destructor))
on_exit(void)
{
if (x == 1)
*(int*)(void*)0 = 10; /* force a crash */
}
int main(void)
{
int status;
pid_t pid;
/* First, check that the constructor was properly called ! */
if (x != 1) {
fprintf(stderr, "Constructor function not called!!\n");
return 1;
}
/* prevent our crashing child process from generating a core file */
{
struct rlimit rlim;
rlim.rlim_cur = 0;
rlim.rlim_max = RLIM_INFINITY;
setrlimit(RLIMIT_CORE, &rlim);
}
/* Fork the current process, then wait for the child to exit
* and crash.
*/
pid = fork();
if (pid < 0) {
fprintf(stderr, "Could not fork process: %s\n", strerror(errno));
return 2;
}
/* in the child, simply exit after 1 second. */
if (pid == 0) {
sleep(1);
return 0;
}
/* in the parent, wait for the child to terminate */
if (wait(&status) < 0) {
fprintf(stderr, "Could not wait for child: %s\n", strerror(errno));
return 3;
}
if (!WIFSIGNALED(status)) {
fprintf(stderr, "Destructor not called!!\n");
return 4;
}
/* Prevent crashing */
x = 2;
printf("ok\n");
return 0;
}
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