11dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project/* $OpenBSD: abort.c,v 1.14 2005/08/08 08:05:36 espie Exp $ */ 21dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project/* 31dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * Copyright (c) 1985 Regents of the University of California. 41dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * All rights reserved. 51dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 61dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * Redistribution and use in source and binary forms, with or without 71dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * modification, are permitted provided that the following conditions 81dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * are met: 91dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 1. Redistributions of source code must retain the above copyright 101dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * notice, this list of conditions and the following disclaimer. 111dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 2. Redistributions in binary form must reproduce the above copyright 121dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * notice, this list of conditions and the following disclaimer in the 131dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * documentation and/or other materials provided with the distribution. 141dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 3. Neither the name of the University nor the names of its contributors 151dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * may be used to endorse or promote products derived from this software 161dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * without specific prior written permission. 171dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 181dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 191dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 201dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 211dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 221dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 231dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 241dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 251dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 261dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 271dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 281dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * SUCH DAMAGE. 291dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project */ 301dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 311dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <signal.h> 321dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <stdlib.h> 331dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <unistd.h> 341dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include "thread_private.h" 351dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include "atexit.h" 361dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 375f32207a3db0bea3ca1c7f4b2b563c11b895f276Andy McFadden#ifdef __arm__ 389d16a79b18f43faebbe8155dbc14896e9b7d8a2eJim Huang__LIBC_HIDDEN__ void 395f32207a3db0bea3ca1c7f4b2b563c11b895f276Andy McFadden__libc_android_abort(void) 405f32207a3db0bea3ca1c7f4b2b563c11b895f276Andy McFadden#else 411dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectvoid 421dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectabort(void) 435f32207a3db0bea3ca1c7f4b2b563c11b895f276Andy McFadden#endif 441dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project{ 451dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project struct atexit *p = __atexit; 461dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project static int cleanup_called = 0; 471dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project sigset_t mask; 481dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 4952d6233296ec84eb5b58fcbf7bc9da4b96a943aaElliott Hughes 501dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project sigfillset(&mask); 511dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* 521dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * don't block SIGABRT to give any handler a chance; we ignore 531dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * any errors -- X311J doesn't allow abort to return anyway. 541dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project */ 551dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project sigdelset(&mask, SIGABRT); 561dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* temporary, so deliberate seg fault can be caught by debuggerd */ 571dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project sigdelset(&mask, SIGSEGV); 581dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* -- */ 591dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project (void)sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL); 601dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 611dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* 621dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * POSIX requires we flush stdio buffers on abort 631dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project */ 641dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (cleanup_called == 0) { 651dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project while (p != NULL && p->next != NULL) 661dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project p = p->next; 671dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* the check for fn_dso == NULL is mostly paranoia */ 681dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (p != NULL && p->fns[0].fn_dso == NULL && 691dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project p->fns[0].fn_ptr.std_func != NULL) { 701dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project cleanup_called = 1; 711dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project (*p->fns[0].fn_ptr.std_func)(); 721dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 731dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 741dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 751dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* temporary, for bug hunting */ 761dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* seg fault seems to produce better debuggerd results than SIGABRT */ 7700a66a6fe84b13751b86d3e18dc7617e4d1dd0b4Chris Dearman#ifdef __mips__ 7800a66a6fe84b13751b86d3e18dc7617e4d1dd0b4Chris Dearman /* An access that will generate SIGSEGV rather than SIGBUS. */ 7900a66a6fe84b13751b86d3e18dc7617e4d1dd0b4Chris Dearman *((char*)0xdeadc0c0) = 39; 8000a66a6fe84b13751b86d3e18dc7617e4d1dd0b4Chris Dearman#else 811dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *((char*)0xdeadbaad) = 39; 8200a66a6fe84b13751b86d3e18dc7617e4d1dd0b4Chris Dearman#endif 831dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* -- */ 841dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 851dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project (void)kill(getpid(), SIGABRT); 861dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 871dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* 881dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * if SIGABRT ignored, or caught and the handler returns, do 891dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * it again, only harder. 901dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project */ 911dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project { 921dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project struct sigaction sa; 931dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 941dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project sa.sa_handler = SIG_DFL; 951dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project sa.sa_flags = SA_RESTART; 961dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project sigemptyset(&sa.sa_mask); 971dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 981dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project (void)sigaction( SIGABRT, &sa, &sa ); 991dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 1001dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 1011dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project (void)sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL); 1021dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project (void)kill(getpid(), SIGABRT); 1031dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project _exit(1); 1041dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 105