11dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project/* 21dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * Copyright (c) 1985 Regents of the University of California. 31dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * All rights reserved. 41dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 51dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * Redistribution and use in source and binary forms, with or without 61dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * modification, are permitted provided that the following conditions 71dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * are met: 81dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 1. Redistributions of source code must retain the above copyright 91dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * notice, this list of conditions and the following disclaimer. 101dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 2. Redistributions in binary form must reproduce the above copyright 111dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * notice, this list of conditions and the following disclaimer in the 121dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * documentation and/or other materials provided with the distribution. 131dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 3. 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IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 211dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 221dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 231dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 241dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 251dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 261dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 271dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * SUCH DAMAGE. 281dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project */ 291dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 301dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <signal.h> 311dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <stdlib.h> 32d9a741c0282e0e67d110e9b8c2f79b38e573a5edJosh Gao#include <sys/syscall.h> 331dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <unistd.h> 341dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 354bf55226623801fab4751bc0736a07e044d00b49Elliott Hughesvoid abort() { 36d9a741c0282e0e67d110e9b8c2f79b38e573a5edJosh Gao // Protect ourselves against stale cached PID/TID values by fetching them via syscall. 37d9a741c0282e0e67d110e9b8c2f79b38e573a5edJosh Gao // http://b/37769298 38d9a741c0282e0e67d110e9b8c2f79b38e573a5edJosh Gao pid_t pid = syscall(__NR_getpid); 39d9a741c0282e0e67d110e9b8c2f79b38e573a5edJosh Gao pid_t tid = syscall(__NR_gettid); 40d9a741c0282e0e67d110e9b8c2f79b38e573a5edJosh Gao 4161e699a133a4807fe878a6cb0d7190d7c96e21f8Elliott Hughes // Don't block SIGABRT to give any signal handler a chance; we ignore 4261e699a133a4807fe878a6cb0d7190d7c96e21f8Elliott Hughes // any errors -- X311J doesn't allow abort to return anyway. 4361e699a133a4807fe878a6cb0d7190d7c96e21f8Elliott Hughes sigset_t mask; 4461e699a133a4807fe878a6cb0d7190d7c96e21f8Elliott Hughes sigfillset(&mask); 4561e699a133a4807fe878a6cb0d7190d7c96e21f8Elliott Hughes sigdelset(&mask, SIGABRT); 4661e699a133a4807fe878a6cb0d7190d7c96e21f8Elliott Hughes sigprocmask(SIG_SETMASK, &mask, NULL); 471dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 48d9a741c0282e0e67d110e9b8c2f79b38e573a5edJosh Gao // Use tgkill directly instead of raise, to avoid inserting spurious stack frames. 49d9a741c0282e0e67d110e9b8c2f79b38e573a5edJosh Gao tgkill(pid, tid, SIGABRT); 501dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 5161e699a133a4807fe878a6cb0d7190d7c96e21f8Elliott Hughes // If SIGABRT ignored, or caught and the handler returns, 5261e699a133a4807fe878a6cb0d7190d7c96e21f8Elliott Hughes // remove the SIGABRT signal handler and raise SIGABRT again. 5361e699a133a4807fe878a6cb0d7190d7c96e21f8Elliott Hughes struct sigaction sa; 5461e699a133a4807fe878a6cb0d7190d7c96e21f8Elliott Hughes sa.sa_handler = SIG_DFL; 5561e699a133a4807fe878a6cb0d7190d7c96e21f8Elliott Hughes sa.sa_flags = SA_RESTART; 5661e699a133a4807fe878a6cb0d7190d7c96e21f8Elliott Hughes sigemptyset(&sa.sa_mask); 5761e699a133a4807fe878a6cb0d7190d7c96e21f8Elliott Hughes sigaction(SIGABRT, &sa, &sa); 5861e699a133a4807fe878a6cb0d7190d7c96e21f8Elliott Hughes sigprocmask(SIG_SETMASK, &mask, NULL); 594bf55226623801fab4751bc0736a07e044d00b49Elliott Hughes 60d9a741c0282e0e67d110e9b8c2f79b38e573a5edJosh Gao tgkill(pid, tid, SIGABRT); 614bf55226623801fab4751bc0736a07e044d00b49Elliott Hughes 624bf55226623801fab4751bc0736a07e044d00b49Elliott Hughes // If we get this far, just exit. 634bf55226623801fab4751bc0736a07e044d00b49Elliott Hughes _exit(127); 641dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 65