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/* $OpenBSD: atexit_test.c,v 1.2 2002/09/14 22:03:14 dhartmei Exp $ */
/*
* Copyright (c) 2002 Daniel Hartmeier
* 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 HOLDERS 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.
*
* Effort sponsored in part by the Defense Advanced Research Projects
* Agency (DARPA) and Air Force Research Laboratory, Air Force
* Materiel Command, USAF, under agreement number F30602-01-2-0537.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include "/usr/src/lib/libc/stdlib/atexit.h"
void handle_first();
void handle_middle();
void handle_last();
void handle_invalid();
void handle_cleanup();
void handle_signal(int);
static int counter;
int
main(int argc, char *argv[])
{
int i;
if (argc != 2 || (strcmp(argv[1], "-valid") &&
strcmp(argv[1], "-invalid-atexit") &&
strcmp(argv[1], "-invalid-cleanup"))) {
fprintf(stderr, "%s -valid/-invalid-atexit/-invalid-cleanup\n",
argv[0]);
return (1);
}
fprintf(stderr, "main()\n");
if (atexit(handle_last)) {
perror("atexit(handle_last) failed");
return (1);
}
for (i = 0; i < 65535; ++i) {
if (atexit(handle_middle)) {
perror("atexit(handle_middle) failed");
return (1);
}
}
if (atexit(handle_first)) {
perror("atexit(handle_first) failed");
return (1);
}
/* this is supposed to segfault */
if (!strcmp(argv[1], "-invalid-atexit")) {
signal(SIGSEGV, handle_signal);
__atexit->fns[0] = handle_invalid;
} else if (!strcmp(argv[1], "-invalid-cleanup")) {
struct atexit *p = __atexit;
signal(SIGSEGV, handle_signal);
while (p != NULL && p->next != NULL)
p = p->next;
if (p == NULL)
fprintf(stderr, "p == NULL, no page found\n");
p->fns[0] = handle_invalid;
}
__atexit_register_cleanup(handle_cleanup);
counter = 0;
fprintf(stderr, "main() returns\n");
return (0);
}
void
handle_first()
{
fprintf(stderr, "handle_first() counter == %i\n", counter);
}
void
handle_middle()
{
counter++;
}
void
handle_last()
{
fprintf(stderr, "handle_last() counter == %i\n", counter);
}
void
handle_cleanup()
{
fprintf(stderr, "handle_cleanup()\n");
}
void
handle_invalid()
{
fprintf(stderr, "handle_invalid() THIS SHOULD HAVE SEGFAULTED INSTEAD!\n");
}
void
handle_signal(int sigraised)
{
switch (sigraised) {
case SIGSEGV:
fprintf(stderr, "SIGSEGV\n");
exit(0);
default:
fprintf(stderr, "unexpected signal caught\n");
exit(1);
}
}
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