platform_bionic/libc/bionic/abort.cpp
Josh Gao f5693c688d Generalize abort's inline_tgkill, use it in fdsan.
Convert abort's inline_tgkill to do the equivalent of
pthread_sigqueue(pthread_self(), ...), so that we can use it in fdsan
as well.

Test: bionic-unit-tests
Test: debuggerd_test32
Test: debuggerd_test64
Change-Id: I92a7b84e2f00ce021b4043ed8a3bd8683d77fe9c
2018-08-31 16:39:23 -07:00

57 lines
2.3 KiB
C++

/*
* 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 <sys/syscall.h>
#include <unistd.h>
#include "private/bionic_inline_raise.h"
void abort() {
// Don't block SIGABRT to give any signal handler a chance; we ignore
// any errors -- X311J doesn't allow abort to return anyway.
sigset64_t mask;
sigfillset64(&mask);
sigdelset64(&mask, SIGABRT);
sigprocmask64(SIG_SETMASK, &mask, nullptr);
inline_raise(SIGABRT);
// If SIGABRT is ignored or it's caught and the handler returns,
// remove the SIGABRT signal handler and raise SIGABRT again.
struct sigaction64 sa = { .sa_handler = SIG_DFL, .sa_flags = SA_RESTART };
sigaction64(SIGABRT, &sa, nullptr);
sigprocmask64(SIG_SETMASK, &mask, nullptr);
inline_raise(SIGABRT);
// If we get this far, just exit.
_exit(127);
}