| Elliott Hughes | 61e699a | 2013-06-12 14:05:46 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 1985 Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * 3. Neither the name of the University nor the names of its contributors |
| 14 | * may be used to endorse or promote products derived from this software |
| 15 | * without specific prior written permission. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 27 | * SUCH DAMAGE. |
| 28 | */ |
| 29 | |
| 30 | #include <signal.h> |
| 31 | #include <stdlib.h> |
| 32 | #include <unistd.h> |
| 33 | #include "atexit.h" |
| 34 | |
| 35 | __LIBC_HIDDEN__ void (*__cleanup)(); |
| 36 | |
| 37 | #ifdef __arm__ |
| 38 | extern "C" __LIBC_HIDDEN__ void __libc_android_abort() |
| 39 | #else |
| 40 | void abort() |
| 41 | #endif |
| 42 | { |
| 43 | // Don't block SIGABRT to give any signal handler a chance; we ignore |
| 44 | // any errors -- X311J doesn't allow abort to return anyway. |
| 45 | sigset_t mask; |
| 46 | sigfillset(&mask); |
| 47 | sigdelset(&mask, SIGABRT); |
| 48 | sigprocmask(SIG_SETMASK, &mask, NULL); |
| 49 | |
| 50 | // POSIX requires we flush stdio buffers on abort. |
| 51 | if (__cleanup) { |
| 52 | (*__cleanup)(); |
| 53 | } |
| 54 | |
| 55 | raise(SIGABRT); |
| 56 | |
| 57 | // If SIGABRT ignored, or caught and the handler returns, |
| 58 | // remove the SIGABRT signal handler and raise SIGABRT again. |
| 59 | struct sigaction sa; |
| 60 | sa.sa_handler = SIG_DFL; |
| 61 | sa.sa_flags = SA_RESTART; |
| 62 | sigemptyset(&sa.sa_mask); |
| 63 | sigaction(SIGABRT, &sa, &sa); |
| 64 | sigprocmask(SIG_SETMASK, &mask, NULL); |
| 65 | raise(SIGABRT); |
| 66 | _exit(1); |
| 67 | } |