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| 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 | |
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