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cc166d71f4
This is a follow-up to c8a016b99d97, following the post-landing discussion at https://chromium-review.googlesource.com/c/crashpad/crashpad/+/1393921/5#message-2058541d8c4505d20a990ab7734cd758e437a5f7 base::size, and std::size that will eventually replace it when C++17 is assured, does not allow the size of non-static data members to be taken in constant expression context. The remaining uses of ArraySize are in: minidump/minidump_exception_writer.cc (×1) minidump/minidump_system_info_writer.cc (×2, also uses base::size) snapshot/cpu_context.cc (×4, also uses base::size) util/misc/arraysize_test.cc (×10, of course) The first of these occurs when initializing a constexpr variable. All others are in expressions used with static_assert. Includes: Update mini_chromium to 737433ebade4d446643c6c07daae02a67e8deccao f701716d9546 Add Windows ARM64 build target to mini_chromium 87a95a3d6ac2 Remove the arraysize macro 1f7255ead1f7 Placate MSVC in areas of base::size usage 737433ebade4 Add cast Bug: chromium:837308 Change-Id: I6a5162654461b1bdd9b7b6864d0d71a734bcde19 Reviewed-on: https://chromium-review.googlesource.com/c/1396108 Commit-Queue: Mark Mentovai <mark@chromium.org> Reviewed-by: Mark Mentovai <mark@chromium.org>
711 lines
28 KiB
C++
711 lines
28 KiB
C++
// Copyright 2014 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "util/mach/exc_server_variants.h"
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#include <AvailabilityMacros.h>
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#include <string.h>
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#include <algorithm>
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#include <vector>
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#include "base/logging.h"
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#include "base/stl_util.h"
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#include "util/mac/mac_util.h"
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#include "util/mach/composite_mach_message_server.h"
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#include "util/mach/exc.h"
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#include "util/mach/excServer.h"
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#include "util/mach/exception_behaviors.h"
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#include "util/mach/mach_exc.h"
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#include "util/mach/mach_excServer.h"
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#include "util/mach/mach_message.h"
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namespace crashpad {
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namespace {
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// Traits for ExcServer<> and SimplifiedExcServer<> adapting them for use with
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// the exc subsystem.
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struct ExcTraits {
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using ExceptionCode = exception_data_type_t;
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using RequestUnion = __RequestUnion__exc_subsystem;
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using ReplyUnion = __ReplyUnion__exc_subsystem;
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using ExceptionRaiseRequest = __Request__exception_raise_t;
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using ExceptionRaiseStateRequest = __Request__exception_raise_state_t;
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using ExceptionRaiseStateIdentityRequest =
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__Request__exception_raise_state_identity_t;
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using ExceptionRaiseReply = __Reply__exception_raise_t;
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using ExceptionRaiseStateReply = __Reply__exception_raise_state_t;
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using ExceptionRaiseStateIdentityReply =
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__Reply__exception_raise_state_identity_t;
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// The MIG-generated __MIG_check__Request__*() functions are not declared as
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// accepting const data, but they could have been because they in fact do not
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// modify the data.
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static kern_return_t MIGCheckRequestExceptionRaise(
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const ExceptionRaiseRequest* in_request) {
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return __MIG_check__Request__exception_raise_t(
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const_cast<ExceptionRaiseRequest*>(in_request));
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}
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static kern_return_t MIGCheckRequestExceptionRaiseState(
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const ExceptionRaiseStateRequest* in_request,
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const ExceptionRaiseStateRequest** in_request_1) {
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return __MIG_check__Request__exception_raise_state_t(
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const_cast<ExceptionRaiseStateRequest*>(in_request),
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const_cast<ExceptionRaiseStateRequest**>(in_request_1));
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}
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static kern_return_t MIGCheckRequestExceptionRaiseStateIdentity(
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const ExceptionRaiseStateIdentityRequest* in_request,
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const ExceptionRaiseStateIdentityRequest** in_request_1) {
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return __MIG_check__Request__exception_raise_state_identity_t(
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const_cast<ExceptionRaiseStateIdentityRequest*>(in_request),
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const_cast<ExceptionRaiseStateIdentityRequest**>(in_request_1));
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}
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// There are no predefined constants for these.
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static const mach_msg_id_t kMachMessageIDExceptionRaise = 2401;
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static const mach_msg_id_t kMachMessageIDExceptionRaiseState = 2402;
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static const mach_msg_id_t kMachMessageIDExceptionRaiseStateIdentity = 2403;
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static const exception_behavior_t kExceptionBehavior = 0;
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};
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// Traits for ExcServer<> and SimplifiedExcServer<> adapting them for use with
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// the mach_exc subsystem.
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struct MachExcTraits {
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using ExceptionCode = mach_exception_data_type_t;
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using RequestUnion = __RequestUnion__mach_exc_subsystem;
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using ReplyUnion = __ReplyUnion__mach_exc_subsystem;
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using ExceptionRaiseRequest = __Request__mach_exception_raise_t;
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using ExceptionRaiseStateRequest = __Request__mach_exception_raise_state_t;
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using ExceptionRaiseStateIdentityRequest =
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__Request__mach_exception_raise_state_identity_t;
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using ExceptionRaiseReply = __Reply__mach_exception_raise_t;
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using ExceptionRaiseStateReply = __Reply__mach_exception_raise_state_t;
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using ExceptionRaiseStateIdentityReply =
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__Reply__mach_exception_raise_state_identity_t;
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// The MIG-generated __MIG_check__Request__*() functions are not declared as
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// accepting const data, but they could have been because they in fact do not
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// modify the data.
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static kern_return_t MIGCheckRequestExceptionRaise(
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const ExceptionRaiseRequest* in_request) {
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return __MIG_check__Request__mach_exception_raise_t(
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const_cast<ExceptionRaiseRequest*>(in_request));
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}
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static kern_return_t MIGCheckRequestExceptionRaiseState(
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const ExceptionRaiseStateRequest* in_request,
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const ExceptionRaiseStateRequest** in_request_1) {
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return __MIG_check__Request__mach_exception_raise_state_t(
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const_cast<ExceptionRaiseStateRequest*>(in_request),
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const_cast<ExceptionRaiseStateRequest**>(in_request_1));
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}
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static kern_return_t MIGCheckRequestExceptionRaiseStateIdentity(
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const ExceptionRaiseStateIdentityRequest* in_request,
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const ExceptionRaiseStateIdentityRequest** in_request_1) {
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return __MIG_check__Request__mach_exception_raise_state_identity_t(
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const_cast<ExceptionRaiseStateIdentityRequest*>(in_request),
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const_cast<ExceptionRaiseStateIdentityRequest**>(in_request_1));
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}
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// There are no predefined constants for these.
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static const mach_msg_id_t kMachMessageIDExceptionRaise = 2405;
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static const mach_msg_id_t kMachMessageIDExceptionRaiseState = 2406;
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static const mach_msg_id_t kMachMessageIDExceptionRaiseStateIdentity = 2407;
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static const exception_behavior_t kExceptionBehavior = MACH_EXCEPTION_CODES;
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};
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//! \brief A server interface for the `exc` or `mach_exc` Mach subsystems.
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template <typename Traits>
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class ExcServer : public MachMessageServer::Interface {
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public:
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//! \brief An interface that the different request messages that are a part of
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//! the `exc` or `mach_exc` Mach subsystems can be dispatched to.
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class Interface {
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public:
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//! \brief Handles exceptions raised by `exception_raise()` or
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//! `mach_exception_raise()`.
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//!
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//! This behaves equivalently to a `catch_exception_raise()` function used
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//! with `exc_server()`, or a `catch_mach_exception_raise()` function used
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//! with `mach_exc_server()`.
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//!
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//! \param[in] trailer The trailer received with the request message.
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//! \param[out] destroy_request `true` if the request message is to be
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//! destroyed even when this method returns success. See
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//! MachMessageServer::Interface.
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virtual kern_return_t CatchExceptionRaise(
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exception_handler_t exception_port,
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thread_t thread,
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task_t task,
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exception_type_t exception,
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const typename Traits::ExceptionCode* code,
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mach_msg_type_number_t code_count,
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const mach_msg_trailer_t* trailer,
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bool* destroy_request) = 0;
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//! \brief Handles exceptions raised by `exception_raise_state()` or
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//! `mach_exception_raise_state()`.
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//!
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//! This behaves equivalently to a `catch_exception_raise_state()` function
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//! used with `exc_server()`, or a `catch_mach_exception_raise_state()`
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//! function used with `mach_exc_server()`.
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//!
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//! There is no \a destroy_request parameter because, unlike
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//! CatchExceptionRaise() and CatchExceptionRaiseStateIdentity(), the
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//! request message is not complex (it does not carry the \a thread or \a
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//! task port rights) and thus there is nothing to destroy.
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//!
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//! \param[in] trailer The trailer received with the request message.
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virtual kern_return_t CatchExceptionRaiseState(
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exception_handler_t exception_port,
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exception_type_t exception,
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const typename Traits::ExceptionCode* code,
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mach_msg_type_number_t code_count,
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thread_state_flavor_t* flavor,
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ConstThreadState old_state,
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mach_msg_type_number_t old_state_count,
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thread_state_t new_state,
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mach_msg_type_number_t* new_state_count,
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const mach_msg_trailer_t* trailer) = 0;
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//! \brief Handles exceptions raised by `exception_raise_state_identity()`
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//! or `mach_exception_raise_state_identity()`.
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//!
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//! This behaves equivalently to a `catch_exception_raise_state_identity()`
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//! function used with `exc_server()`, or a
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//! `catch_mach_exception_raise_state_identity()` function used with
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//! `mach_exc_server()`.
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//!
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//! \param[in] trailer The trailer received with the request message.
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//! \param[out] destroy_request `true` if the request message is to be
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//! destroyed even when this method returns success. See
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//! MachMessageServer::Interface.
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virtual kern_return_t CatchExceptionRaiseStateIdentity(
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exception_handler_t exception_port,
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thread_t thread,
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task_t task,
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exception_type_t exception,
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const typename Traits::ExceptionCode* code,
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mach_msg_type_number_t code_count,
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thread_state_flavor_t* flavor,
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ConstThreadState old_state,
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mach_msg_type_number_t old_state_count,
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thread_state_t new_state,
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mach_msg_type_number_t* new_state_count,
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const mach_msg_trailer_t* trailer,
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bool* destroy_request) = 0;
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protected:
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~Interface() {}
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};
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//! \brief Constructs an object of this class.
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//!
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//! \param[in] interface The interface to dispatch requests to. Weak.
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explicit ExcServer(Interface* interface)
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: MachMessageServer::Interface(), interface_(interface) {}
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// MachMessageServer::Interface:
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bool MachMessageServerFunction(const mach_msg_header_t* in_header,
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mach_msg_header_t* out_header,
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bool* destroy_complex_request) override;
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std::set<mach_msg_id_t> MachMessageServerRequestIDs() override {
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constexpr mach_msg_id_t request_ids[] = {
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Traits::kMachMessageIDExceptionRaise,
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Traits::kMachMessageIDExceptionRaiseState,
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Traits::kMachMessageIDExceptionRaiseStateIdentity,
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};
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return std::set<mach_msg_id_t>(&request_ids[0],
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&request_ids[base::size(request_ids)]);
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}
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mach_msg_size_t MachMessageServerRequestSize() override {
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return sizeof(typename Traits::RequestUnion);
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}
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mach_msg_size_t MachMessageServerReplySize() override {
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return sizeof(typename Traits::ReplyUnion);
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}
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private:
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Interface* interface_; // weak
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DISALLOW_COPY_AND_ASSIGN(ExcServer);
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};
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template <typename Traits>
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bool ExcServer<Traits>::MachMessageServerFunction(
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const mach_msg_header_t* in_header,
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mach_msg_header_t* out_header,
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bool* destroy_complex_request) {
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PrepareMIGReplyFromRequest(in_header, out_header);
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const mach_msg_trailer_t* in_trailer =
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MachMessageTrailerFromHeader(in_header);
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switch (in_header->msgh_id) {
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case Traits::kMachMessageIDExceptionRaise: {
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// exception_raise(), catch_exception_raise(), mach_exception_raise(),
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// catch_mach_exception_raise().
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using Request = typename Traits::ExceptionRaiseRequest;
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const Request* in_request = reinterpret_cast<const Request*>(in_header);
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kern_return_t kr = Traits::MIGCheckRequestExceptionRaise(in_request);
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if (kr != MACH_MSG_SUCCESS) {
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SetMIGReplyError(out_header, kr);
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return true;
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}
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using Reply = typename Traits::ExceptionRaiseReply;
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Reply* out_reply = reinterpret_cast<Reply*>(out_header);
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out_reply->RetCode =
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interface_->CatchExceptionRaise(in_header->msgh_local_port,
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in_request->thread.name,
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in_request->task.name,
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in_request->exception,
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in_request->code,
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in_request->codeCnt,
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in_trailer,
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destroy_complex_request);
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if (out_reply->RetCode != KERN_SUCCESS) {
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return true;
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}
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out_header->msgh_size = sizeof(*out_reply);
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return true;
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}
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case Traits::kMachMessageIDExceptionRaiseState: {
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// exception_raise_state(), catch_exception_raise_state(),
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// mach_exception_raise_state(), catch_mach_exception_raise_state().
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using Request = typename Traits::ExceptionRaiseStateRequest;
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const Request* in_request = reinterpret_cast<const Request*>(in_header);
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// in_request_1 is used for the portion of the request after the codes,
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// which in theory can be variable-length. The check function will set it.
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const Request* in_request_1;
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kern_return_t kr =
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Traits::MIGCheckRequestExceptionRaiseState(in_request, &in_request_1);
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if (kr != MACH_MSG_SUCCESS) {
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SetMIGReplyError(out_header, kr);
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return true;
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}
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using Reply = typename Traits::ExceptionRaiseStateReply;
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Reply* out_reply = reinterpret_cast<Reply*>(out_header);
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out_reply->flavor = in_request_1->flavor;
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out_reply->new_stateCnt = base::size(out_reply->new_state);
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out_reply->RetCode =
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interface_->CatchExceptionRaiseState(in_header->msgh_local_port,
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in_request->exception,
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in_request->code,
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in_request->codeCnt,
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&out_reply->flavor,
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in_request_1->old_state,
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in_request_1->old_stateCnt,
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out_reply->new_state,
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&out_reply->new_stateCnt,
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in_trailer);
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if (out_reply->RetCode != KERN_SUCCESS) {
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return true;
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}
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out_header->msgh_size =
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sizeof(*out_reply) - sizeof(out_reply->new_state) +
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sizeof(out_reply->new_state[0]) * out_reply->new_stateCnt;
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return true;
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}
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case Traits::kMachMessageIDExceptionRaiseStateIdentity: {
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// exception_raise_state_identity(),
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// catch_exception_raise_state_identity(),
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// mach_exception_raise_state_identity(),
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// catch_mach_exception_raise_state_identity().
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using Request = typename Traits::ExceptionRaiseStateIdentityRequest;
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const Request* in_request = reinterpret_cast<const Request*>(in_header);
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// in_request_1 is used for the portion of the request after the codes,
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// which in theory can be variable-length. The check function will set it.
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const Request* in_request_1;
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kern_return_t kr = Traits::MIGCheckRequestExceptionRaiseStateIdentity(
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in_request, &in_request_1);
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if (kr != MACH_MSG_SUCCESS) {
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SetMIGReplyError(out_header, kr);
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return true;
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}
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using Reply = typename Traits::ExceptionRaiseStateIdentityReply;
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Reply* out_reply = reinterpret_cast<Reply*>(out_header);
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out_reply->flavor = in_request_1->flavor;
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out_reply->new_stateCnt = base::size(out_reply->new_state);
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out_reply->RetCode = interface_->CatchExceptionRaiseStateIdentity(
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in_header->msgh_local_port,
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in_request->thread.name,
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in_request->task.name,
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in_request->exception,
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in_request->code,
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in_request->codeCnt,
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&out_reply->flavor,
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in_request_1->old_state,
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in_request_1->old_stateCnt,
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out_reply->new_state,
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&out_reply->new_stateCnt,
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in_trailer,
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destroy_complex_request);
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if (out_reply->RetCode != KERN_SUCCESS) {
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return true;
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}
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out_header->msgh_size =
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sizeof(*out_reply) - sizeof(out_reply->new_state) +
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sizeof(out_reply->new_state[0]) * out_reply->new_stateCnt;
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return true;
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}
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default: {
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SetMIGReplyError(out_header, MIG_BAD_ID);
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return false;
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}
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}
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}
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//! \brief A server interface for the `exc` or `mach_exc` Mach subsystems,
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//! simplified to have only a single interface method needing
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//! implementation.
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template <typename Traits>
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class SimplifiedExcServer final : public ExcServer<Traits>,
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public ExcServer<Traits>::Interface {
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public:
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//! \brief An interface that the different request messages that are a part of
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//! the `exc` or `mach_exc` Mach subsystems can be dispatched to.
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class Interface {
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public:
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//! \brief Handles exceptions raised by `exception_raise()`,
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//! `exception_raise_state()`, and `exception_raise_state_identity()`;
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//! or `mach_exception_raise()`, `mach_exception_raise_state()`, and
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//! `mach_exception_raise_state_identity()`.
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//!
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//! For convenience in implementation, these different “behaviors” of
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//! exception messages are all mapped to a single interface method. The
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//! exception’s original “behavior” is specified in the \a behavior
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//! parameter. Only parameters that were supplied in the request message
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//! are populated, other parameters are set to reasonable default values.
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//!
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//! The meanings of most parameters are identical to that of
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//! ExcServer<>::Interface::CatchExceptionRaiseStateIdentity().
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//!
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//! \param[in] behavior `EXCEPTION_DEFAULT`, `EXCEPTION_STATE`, or
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//! `EXCEPTION_STATE_IDENTITY`, identifying which exception request
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//! message was processed and thus which other parameters are valid.
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//! When used with the `mach_exc` subsystem, `MACH_EXCEPTION_CODES` will
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//! be ORed in to this parameter.
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virtual kern_return_t CatchException(
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exception_behavior_t behavior,
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exception_handler_t exception_port,
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thread_t thread,
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task_t task,
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exception_type_t exception,
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const typename Traits::ExceptionCode* code,
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mach_msg_type_number_t code_count,
|
||
thread_state_flavor_t* flavor,
|
||
ConstThreadState old_state,
|
||
mach_msg_type_number_t old_state_count,
|
||
thread_state_t new_state,
|
||
mach_msg_type_number_t* new_state_count,
|
||
const mach_msg_trailer_t* trailer,
|
||
bool* destroy_complex_request) = 0;
|
||
|
||
protected:
|
||
~Interface() {}
|
||
};
|
||
|
||
//! \brief Constructs an object of this class.
|
||
//!
|
||
//! \param[in] interface The interface to dispatch requests to. Weak.
|
||
explicit SimplifiedExcServer(Interface* interface)
|
||
: ExcServer<Traits>(this),
|
||
ExcServer<Traits>::Interface(),
|
||
interface_(interface) {}
|
||
|
||
// ExcServer::Interface:
|
||
|
||
kern_return_t CatchExceptionRaise(exception_handler_t exception_port,
|
||
thread_t thread,
|
||
task_t task,
|
||
exception_type_t exception,
|
||
const typename Traits::ExceptionCode* code,
|
||
mach_msg_type_number_t code_count,
|
||
const mach_msg_trailer_t* trailer,
|
||
bool* destroy_request) override {
|
||
thread_state_flavor_t flavor = THREAD_STATE_NONE;
|
||
mach_msg_type_number_t new_state_count = 0;
|
||
return interface_->CatchException(
|
||
Traits::kExceptionBehavior | EXCEPTION_DEFAULT,
|
||
exception_port,
|
||
thread,
|
||
task,
|
||
exception,
|
||
code_count ? code : nullptr,
|
||
code_count,
|
||
&flavor,
|
||
nullptr,
|
||
0,
|
||
nullptr,
|
||
&new_state_count,
|
||
trailer,
|
||
destroy_request);
|
||
}
|
||
|
||
kern_return_t CatchExceptionRaiseState(
|
||
exception_handler_t exception_port,
|
||
exception_type_t exception,
|
||
const typename Traits::ExceptionCode* code,
|
||
mach_msg_type_number_t code_count,
|
||
thread_state_flavor_t* flavor,
|
||
ConstThreadState old_state,
|
||
mach_msg_type_number_t old_state_count,
|
||
thread_state_t new_state,
|
||
mach_msg_type_number_t* new_state_count,
|
||
const mach_msg_trailer_t* trailer) override {
|
||
bool destroy_complex_request = false;
|
||
return interface_->CatchException(
|
||
Traits::kExceptionBehavior | EXCEPTION_STATE,
|
||
exception_port,
|
||
THREAD_NULL,
|
||
TASK_NULL,
|
||
exception,
|
||
code_count ? code : nullptr,
|
||
code_count,
|
||
flavor,
|
||
old_state_count ? old_state : nullptr,
|
||
old_state_count,
|
||
new_state_count ? new_state : nullptr,
|
||
new_state_count,
|
||
trailer,
|
||
&destroy_complex_request);
|
||
}
|
||
|
||
kern_return_t CatchExceptionRaiseStateIdentity(
|
||
exception_handler_t exception_port,
|
||
thread_t thread,
|
||
task_t task,
|
||
exception_type_t exception,
|
||
const typename Traits::ExceptionCode* code,
|
||
mach_msg_type_number_t code_count,
|
||
thread_state_flavor_t* flavor,
|
||
ConstThreadState old_state,
|
||
mach_msg_type_number_t old_state_count,
|
||
thread_state_t new_state,
|
||
mach_msg_type_number_t* new_state_count,
|
||
const mach_msg_trailer_t* trailer,
|
||
bool* destroy_request) override {
|
||
return interface_->CatchException(
|
||
Traits::kExceptionBehavior | EXCEPTION_STATE_IDENTITY,
|
||
exception_port,
|
||
thread,
|
||
task,
|
||
exception,
|
||
code_count ? code : nullptr,
|
||
code_count,
|
||
flavor,
|
||
old_state_count ? old_state : nullptr,
|
||
old_state_count,
|
||
new_state_count ? new_state : nullptr,
|
||
new_state_count,
|
||
trailer,
|
||
destroy_request);
|
||
}
|
||
|
||
private:
|
||
Interface* interface_; // weak
|
||
|
||
DISALLOW_COPY_AND_ASSIGN(SimplifiedExcServer);
|
||
};
|
||
|
||
} // namespace
|
||
|
||
namespace internal {
|
||
|
||
class UniversalMachExcServerImpl final
|
||
: public CompositeMachMessageServer,
|
||
public SimplifiedExcServer<ExcTraits>::Interface,
|
||
public SimplifiedExcServer<MachExcTraits>::Interface {
|
||
public:
|
||
explicit UniversalMachExcServerImpl(
|
||
UniversalMachExcServer::Interface* interface)
|
||
: CompositeMachMessageServer(),
|
||
SimplifiedExcServer<ExcTraits>::Interface(),
|
||
SimplifiedExcServer<MachExcTraits>::Interface(),
|
||
exc_server_(this),
|
||
mach_exc_server_(this),
|
||
interface_(interface) {
|
||
AddHandler(&exc_server_);
|
||
AddHandler(&mach_exc_server_);
|
||
}
|
||
|
||
~UniversalMachExcServerImpl() {}
|
||
|
||
// SimplifiedExcServer<ExcTraits>::Interface:
|
||
kern_return_t CatchException(exception_behavior_t behavior,
|
||
exception_handler_t exception_port,
|
||
thread_t thread,
|
||
task_t task,
|
||
exception_type_t exception,
|
||
const exception_data_type_t* code,
|
||
mach_msg_type_number_t code_count,
|
||
thread_state_flavor_t* flavor,
|
||
ConstThreadState old_state,
|
||
mach_msg_type_number_t old_state_count,
|
||
thread_state_t new_state,
|
||
mach_msg_type_number_t* new_state_count,
|
||
const mach_msg_trailer_t* trailer,
|
||
bool* destroy_complex_request) {
|
||
std::vector<mach_exception_data_type_t> mach_codes;
|
||
mach_codes.reserve(code_count);
|
||
for (size_t index = 0; index < code_count; ++index) {
|
||
mach_codes.push_back(code[index]);
|
||
}
|
||
|
||
return interface_->CatchMachException(behavior,
|
||
exception_port,
|
||
thread,
|
||
task,
|
||
exception,
|
||
code_count ? &mach_codes[0] : nullptr,
|
||
code_count,
|
||
flavor,
|
||
old_state_count ? old_state : nullptr,
|
||
old_state_count,
|
||
new_state_count ? new_state : nullptr,
|
||
new_state_count,
|
||
trailer,
|
||
destroy_complex_request);
|
||
}
|
||
|
||
// SimplifiedExcServer<MachExcTraits>::Interface:
|
||
kern_return_t CatchException(exception_behavior_t behavior,
|
||
exception_handler_t exception_port,
|
||
thread_t thread,
|
||
task_t task,
|
||
exception_type_t exception,
|
||
const mach_exception_data_type_t* code,
|
||
mach_msg_type_number_t code_count,
|
||
thread_state_flavor_t* flavor,
|
||
ConstThreadState old_state,
|
||
mach_msg_type_number_t old_state_count,
|
||
thread_state_t new_state,
|
||
mach_msg_type_number_t* new_state_count,
|
||
const mach_msg_trailer_t* trailer,
|
||
bool* destroy_complex_request) {
|
||
return interface_->CatchMachException(behavior,
|
||
exception_port,
|
||
thread,
|
||
task,
|
||
exception,
|
||
code_count ? code : nullptr,
|
||
code_count,
|
||
flavor,
|
||
old_state_count ? old_state : nullptr,
|
||
old_state_count,
|
||
new_state_count ? new_state : nullptr,
|
||
new_state_count,
|
||
trailer,
|
||
destroy_complex_request);
|
||
}
|
||
|
||
private:
|
||
SimplifiedExcServer<ExcTraits> exc_server_;
|
||
SimplifiedExcServer<MachExcTraits> mach_exc_server_;
|
||
UniversalMachExcServer::Interface* interface_; // weak
|
||
|
||
DISALLOW_COPY_AND_ASSIGN(UniversalMachExcServerImpl);
|
||
};
|
||
|
||
} // namespace internal
|
||
|
||
UniversalMachExcServer::UniversalMachExcServer(
|
||
UniversalMachExcServer::Interface* interface)
|
||
: MachMessageServer::Interface(),
|
||
impl_(new internal::UniversalMachExcServerImpl(interface)) {
|
||
}
|
||
|
||
UniversalMachExcServer::~UniversalMachExcServer() {
|
||
}
|
||
|
||
bool UniversalMachExcServer::MachMessageServerFunction(
|
||
const mach_msg_header_t* in_header,
|
||
mach_msg_header_t* out_header,
|
||
bool* destroy_complex_request) {
|
||
return impl_->MachMessageServerFunction(
|
||
in_header, out_header, destroy_complex_request);
|
||
}
|
||
|
||
std::set<mach_msg_id_t> UniversalMachExcServer::MachMessageServerRequestIDs() {
|
||
return impl_->MachMessageServerRequestIDs();
|
||
}
|
||
|
||
mach_msg_size_t UniversalMachExcServer::MachMessageServerRequestSize() {
|
||
return impl_->MachMessageServerRequestSize();
|
||
}
|
||
|
||
mach_msg_size_t UniversalMachExcServer::MachMessageServerReplySize() {
|
||
return impl_->MachMessageServerReplySize();
|
||
}
|
||
|
||
kern_return_t ExcServerSuccessfulReturnValue(exception_type_t exception,
|
||
exception_behavior_t behavior,
|
||
bool set_thread_state) {
|
||
if (exception == EXC_CRASH
|
||
#if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_11
|
||
&& MacOSXMinorVersion() >= 11
|
||
#endif
|
||
) {
|
||
return KERN_SUCCESS;
|
||
}
|
||
|
||
if (!set_thread_state && ExceptionBehaviorHasState(behavior)) {
|
||
return MACH_RCV_PORT_DIED;
|
||
}
|
||
|
||
return KERN_SUCCESS;
|
||
}
|
||
|
||
void ExcServerCopyState(exception_behavior_t behavior,
|
||
ConstThreadState old_state,
|
||
mach_msg_type_number_t old_state_count,
|
||
thread_state_t new_state,
|
||
mach_msg_type_number_t* new_state_count) {
|
||
if (ExceptionBehaviorHasState(behavior)) {
|
||
*new_state_count = std::min(old_state_count, *new_state_count);
|
||
memcpy(new_state, old_state, *new_state_count * sizeof(old_state[0]));
|
||
}
|
||
}
|
||
|
||
} // namespace crashpad
|