| // 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 "snapshot/mac/process_types.h" |
| |
| #include <string.h> |
| #include <sys/types.h> |
| |
| #include "base/logging.h" |
| #include "snapshot/mac/process_types/internal.h" |
| #include "util/mach/task_memory.h" |
| |
| #if !DOXYGEN |
| |
| namespace crashpad { |
| namespace process_types { |
| namespace internal { |
| |
| namespace { |
| |
| template <typename T> |
| bool ReadIntoVersioned(ProcessReader* process_reader, |
| mach_vm_address_t address, |
| T* specific) { |
| TaskMemory* task_memory = process_reader->Memory(); |
| if (!task_memory->Read( |
| address, sizeof(specific->version), &specific->version)) { |
| return false; |
| } |
| |
| mach_vm_size_t size = T::ExpectedSizeForVersion(specific->version); |
| |
| if (!task_memory->Read(address, size, specific)) { |
| return false; |
| } |
| |
| // Zero out the rest of the structure in case anything accesses fields without |
| // checking the version. |
| size_t remaining = sizeof(*specific) - size; |
| if (remaining > 0) { |
| char* start = reinterpret_cast<char*>(specific) + size; |
| memset(start, 0, remaining); |
| } |
| |
| return true; |
| } |
| |
| } // namespace |
| |
| // static |
| template <typename Traits> |
| size_t dyld_all_image_infos<Traits>::ExpectedSizeForVersion( |
| decltype(dyld_all_image_infos<Traits>::version) version) { |
| if (version >= 14) { |
| return sizeof(dyld_all_image_infos<Traits>); |
| } |
| if (version >= 13) { |
| return offsetof(dyld_all_image_infos<Traits>, infoArrayChangeTimestamp); |
| } |
| if (version >= 12) { |
| return offsetof(dyld_all_image_infos<Traits>, sharedCacheUUID); |
| } |
| if (version >= 11) { |
| return offsetof(dyld_all_image_infos<Traits>, sharedCacheSlide); |
| } |
| if (version >= 10) { |
| return offsetof(dyld_all_image_infos<Traits>, errorKind); |
| } |
| if (version >= 9) { |
| return offsetof(dyld_all_image_infos<Traits>, initialImageCount); |
| } |
| if (version >= 8) { |
| return offsetof(dyld_all_image_infos<Traits>, dyldAllImageInfosAddress); |
| } |
| if (version >= 7) { |
| return offsetof(dyld_all_image_infos<Traits>, uuidArrayCount); |
| } |
| if (version >= 6) { |
| return offsetof(dyld_all_image_infos<Traits>, systemOrderFlag); |
| } |
| if (version >= 5) { |
| return offsetof(dyld_all_image_infos<Traits>, coreSymbolicationShmPage); |
| } |
| if (version >= 3) { |
| return offsetof(dyld_all_image_infos<Traits>, dyldVersion); |
| } |
| if (version >= 2) { |
| return offsetof(dyld_all_image_infos<Traits>, jitInfo); |
| } |
| if (version >= 1) { |
| return offsetof(dyld_all_image_infos<Traits>, libSystemInitialized); |
| } |
| return offsetof(dyld_all_image_infos<Traits>, infoArrayCount); |
| } |
| |
| // static |
| template <typename Traits> |
| bool dyld_all_image_infos<Traits>::ReadInto( |
| ProcessReader* process_reader, |
| mach_vm_address_t address, |
| dyld_all_image_infos<Traits>* specific) { |
| return ReadIntoVersioned(process_reader, address, specific); |
| } |
| |
| // static |
| template <typename Traits> |
| size_t crashreporter_annotations_t<Traits>::ExpectedSizeForVersion( |
| decltype(crashreporter_annotations_t<Traits>::version) version) { |
| if (version >= 5) { |
| return sizeof(crashreporter_annotations_t<Traits>); |
| } |
| if (version >= 4) { |
| return offsetof(crashreporter_annotations_t<Traits>, unknown_0); |
| } |
| return offsetof(crashreporter_annotations_t<Traits>, message); |
| } |
| |
| // static |
| template <typename Traits> |
| bool crashreporter_annotations_t<Traits>::ReadInto( |
| ProcessReader* process_reader, |
| mach_vm_address_t address, |
| crashreporter_annotations_t<Traits>* specific) { |
| return ReadIntoVersioned(process_reader, address, specific); |
| } |
| |
| // Explicit template instantiation of the above. |
| #define PROCESS_TYPE_FLAVOR_TRAITS(lp_bits) \ |
| template size_t \ |
| dyld_all_image_infos<Traits##lp_bits>::ExpectedSizeForVersion( \ |
| decltype(dyld_all_image_infos<Traits##lp_bits>::version)); \ |
| template bool dyld_all_image_infos<Traits##lp_bits>::ReadInto( \ |
| ProcessReader*, \ |
| mach_vm_address_t, \ |
| dyld_all_image_infos<Traits##lp_bits>*); \ |
| template size_t \ |
| crashreporter_annotations_t<Traits##lp_bits>::ExpectedSizeForVersion( \ |
| decltype(crashreporter_annotations_t<Traits##lp_bits>::version)); \ |
| template bool crashreporter_annotations_t<Traits##lp_bits>::ReadInto( \ |
| ProcessReader*, \ |
| mach_vm_address_t, \ |
| crashreporter_annotations_t<Traits##lp_bits>*); |
| |
| #include "snapshot/mac/process_types/flavors.h" |
| |
| #undef PROCESS_TYPE_FLAVOR_TRAITS |
| |
| } // namespace internal |
| } // namespace process_types |
| } // namespace crashpad |
| |
| #endif // !DOXYGEN |