52d6233296
In particular this affects assert(3) and __cxa_pure_virtual, both of which have managed to confuse people this week by apparently aborting without reason. (Because stderr goes nowhere, normally.) Bug: 6852995 Bug: 6840813 Change-Id: I7f5d17d5ddda439e217b7932096702dc013b9142
105 lines
3.3 KiB
C
105 lines
3.3 KiB
C
/* $OpenBSD: abort.c,v 1.14 2005/08/08 08:05:36 espie Exp $ */
|
|
/*
|
|
* Copyright (c) 1985 Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. 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.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 <signal.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include "thread_private.h"
|
|
#include "atexit.h"
|
|
|
|
#ifdef __arm__
|
|
__LIBC_HIDDEN__ void
|
|
__libc_android_abort(void)
|
|
#else
|
|
void
|
|
abort(void)
|
|
#endif
|
|
{
|
|
struct atexit *p = __atexit;
|
|
static int cleanup_called = 0;
|
|
sigset_t mask;
|
|
|
|
|
|
sigfillset(&mask);
|
|
/*
|
|
* don't block SIGABRT to give any handler a chance; we ignore
|
|
* any errors -- X311J doesn't allow abort to return anyway.
|
|
*/
|
|
sigdelset(&mask, SIGABRT);
|
|
/* temporary, so deliberate seg fault can be caught by debuggerd */
|
|
sigdelset(&mask, SIGSEGV);
|
|
/* -- */
|
|
(void)sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL);
|
|
|
|
/*
|
|
* POSIX requires we flush stdio buffers on abort
|
|
*/
|
|
if (cleanup_called == 0) {
|
|
while (p != NULL && p->next != NULL)
|
|
p = p->next;
|
|
/* the check for fn_dso == NULL is mostly paranoia */
|
|
if (p != NULL && p->fns[0].fn_dso == NULL &&
|
|
p->fns[0].fn_ptr.std_func != NULL) {
|
|
cleanup_called = 1;
|
|
(*p->fns[0].fn_ptr.std_func)();
|
|
}
|
|
}
|
|
|
|
/* temporary, for bug hunting */
|
|
/* seg fault seems to produce better debuggerd results than SIGABRT */
|
|
#ifdef __mips__
|
|
/* An access that will generate SIGSEGV rather than SIGBUS. */
|
|
*((char*)0xdeadc0c0) = 39;
|
|
#else
|
|
*((char*)0xdeadbaad) = 39;
|
|
#endif
|
|
/* -- */
|
|
|
|
(void)kill(getpid(), SIGABRT);
|
|
|
|
/*
|
|
* if SIGABRT ignored, or caught and the handler returns, do
|
|
* it again, only harder.
|
|
*/
|
|
{
|
|
struct sigaction sa;
|
|
|
|
sa.sa_handler = SIG_DFL;
|
|
sa.sa_flags = SA_RESTART;
|
|
sigemptyset(&sa.sa_mask);
|
|
|
|
(void)sigaction( SIGABRT, &sa, &sa );
|
|
}
|
|
|
|
(void)sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL);
|
|
(void)kill(getpid(), SIGABRT);
|
|
_exit(1);
|
|
}
|