| // Copyright 2014 The Crashpad Authors. All rights reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "util/mach/mach_extensions.h" |
| |
| #include <Availability.h> |
| #include <AvailabilityMacros.h> |
| #include <pthread.h> |
| |
| #include "base/mac/mach_logging.h" |
| #include "build/build_config.h" |
| #include "util/mac/mac_util.h" |
| |
| namespace crashpad { |
| |
| thread_t MachThreadSelf() { |
| // The pthreads library keeps its own copy of the thread port. Using it does |
| // not increment its reference count. |
| return pthread_mach_thread_np(pthread_self()); |
| } |
| |
| mach_port_t NewMachPort(mach_port_right_t right) { |
| mach_port_t port = MACH_PORT_NULL; |
| kern_return_t kr = mach_port_allocate(mach_task_self(), right, &port); |
| MACH_LOG_IF(ERROR, kr != KERN_SUCCESS, kr) << "mach_port_allocate"; |
| return port; |
| } |
| |
| exception_mask_t ExcMaskAll() { |
| // This is necessary because of the way that the kernel validates |
| // exception_mask_t arguments to |
| // {host,task,thread}_{get,set,swap}_exception_ports(). It is strict, |
| // rejecting attempts to operate on any bits that it does not recognize. See |
| // 10.9.4 xnu-2422.110.17/osfmk/mach/ipc_host.c and |
| // xnu-2422.110.17/osfmk/mach/ipc_tt.c. |
| |
| #if defined(OS_IOS) && __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_7_0 |
| // iOS 7 ≅ OS X 10.9. |
| #error This code was not ported to iOS versions older than 7 |
| #endif |
| |
| #if !defined(OS_IOS) && MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_9 |
| const int mac_os_x_minor_version = MacOSXMinorVersion(); |
| #endif |
| |
| // See 10.6.8 xnu-1504.15.3/osfmk/mach/exception_types.h. 10.7 uses the same |
| // definition as 10.6. See 10.7.5 xnu-1699.32.7/osfmk/mach/exception_types.h |
| constexpr exception_mask_t kExcMaskAll_10_6 = |
| EXC_MASK_BAD_ACCESS | |
| EXC_MASK_BAD_INSTRUCTION | |
| EXC_MASK_ARITHMETIC | |
| EXC_MASK_EMULATION | |
| EXC_MASK_SOFTWARE | |
| EXC_MASK_BREAKPOINT | |
| EXC_MASK_SYSCALL | |
| EXC_MASK_MACH_SYSCALL | |
| EXC_MASK_RPC_ALERT | |
| EXC_MASK_MACHINE; |
| #if !defined(OS_IOS) && MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_8 |
| if (mac_os_x_minor_version < 8) { |
| return kExcMaskAll_10_6; |
| } |
| #endif |
| |
| // 10.8 added EXC_MASK_RESOURCE. See 10.8.5 |
| // xnu-2050.48.11/osfmk/mach/exception_types.h. |
| constexpr exception_mask_t kExcMaskAll_10_8 = |
| kExcMaskAll_10_6 | EXC_MASK_RESOURCE; |
| #if !defined(OS_IOS) && MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_9 |
| if (mac_os_x_minor_version < 9) { |
| return kExcMaskAll_10_8; |
| } |
| #endif |
| |
| // 10.9 added EXC_MASK_GUARD. See 10.9.4 |
| // xnu-2422.110.17/osfmk/mach/exception_types.h. |
| constexpr exception_mask_t kExcMaskAll_10_9 = |
| kExcMaskAll_10_8 | EXC_MASK_GUARD; |
| return kExcMaskAll_10_9; |
| } |
| |
| exception_mask_t ExcMaskValid() { |
| const exception_mask_t kExcMaskValid_10_6 = ExcMaskAll() | EXC_MASK_CRASH; |
| #if defined(OS_IOS) && __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_9_0 |
| // iOS 9 ≅ OS X 10.11. |
| #error This code was not ported to iOS versions older than 9 |
| #endif |
| |
| #if !defined(OS_IOS) && MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_11 |
| if (MacOSXMinorVersion() < 11) { |
| return kExcMaskValid_10_6; |
| } |
| #endif |
| |
| // 10.11 added EXC_MASK_CORPSE_NOTIFY. See 10.11 <mach/exception_types.h>. |
| const exception_mask_t kExcMaskValid_10_11 = |
| kExcMaskValid_10_6 | EXC_MASK_CORPSE_NOTIFY; |
| return kExcMaskValid_10_11; |
| } |
| |
| } // namespace crashpad |