1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "base/process/launch.h" 6 7 #include <mach/mach.h> 8 #include <servers/bootstrap.h> 9 10 #include "base/logging.h" 11 12 namespace base { 13 14 void RestoreDefaultExceptionHandler() { 15 // This function is tailored to remove the Breakpad exception handler. 16 // exception_mask matches s_exception_mask in 17 // breakpad/src/client/mac/handler/exception_handler.cc 18 const exception_mask_t exception_mask = EXC_MASK_BAD_ACCESS | 19 EXC_MASK_BAD_INSTRUCTION | 20 EXC_MASK_ARITHMETIC | 21 EXC_MASK_BREAKPOINT; 22 23 // Setting the exception port to MACH_PORT_NULL may not be entirely 24 // kosher to restore the default exception handler, but in practice, 25 // it results in the exception port being set to Apple Crash Reporter, 26 // the desired behavior. 27 task_set_exception_ports(mach_task_self(), exception_mask, MACH_PORT_NULL, 28 EXCEPTION_DEFAULT, THREAD_STATE_NONE); 29 } 30 31 void ReplaceBootstrapPort(const std::string& new_bootstrap_name) { 32 // This function is called between fork() and exec(), so it should take care 33 // to run properly in that situation. 34 35 mach_port_t port = MACH_PORT_NULL; 36 kern_return_t kr = bootstrap_look_up(bootstrap_port, 37 new_bootstrap_name.c_str(), &port); 38 if (kr != KERN_SUCCESS) { 39 RAW_LOG(FATAL, "Failed to look up replacement bootstrap port."); 40 } 41 42 kr = task_set_bootstrap_port(mach_task_self(), port); 43 if (kr != KERN_SUCCESS) { 44 RAW_LOG(FATAL, "Failed to replace bootstrap port."); 45 } 46 } 47 48 } // namespace base 49
