107 lines
3.6 KiB
C
107 lines
3.6 KiB
C
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// Copyright 2017 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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#ifndef CRASHPAD_SNAPSHOT_LINUX_EXCEPTION_SNAPSHOT_LINUX_H_
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#define CRASHPAD_SNAPSHOT_LINUX_EXCEPTION_SNAPSHOT_LINUX_H_
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#include <stdint.h>
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#include <sys/types.h>
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#include <vector>
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#include "build/build_config.h"
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#include "snapshot/cpu_context.h"
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#include "snapshot/exception_snapshot.h"
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#include "snapshot/linux/process_reader_linux.h"
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#include "snapshot/memory_snapshot.h"
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#include "snapshot/memory_snapshot_generic.h"
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#include "util/linux/address_types.h"
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#include "util/misc/initialization_state_dcheck.h"
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namespace crashpad {
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namespace internal {
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//! \brief An ExceptionSnapshot of an signal received by a running (or crashed)
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//! process on a Linux system.
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class ExceptionSnapshotLinux final : public ExceptionSnapshot {
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public:
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ExceptionSnapshotLinux();
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ExceptionSnapshotLinux(const ExceptionSnapshotLinux&) = delete;
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ExceptionSnapshotLinux& operator=(const ExceptionSnapshotLinux&) = delete;
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~ExceptionSnapshotLinux() override;
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//! \brief Initializes the object.
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//!
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//! \param[in] process_reader A ProcessReaderLinux for the process that
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//! received
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//! the signal.
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//! \param[in] siginfo_address The address in the target process' address
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//! space of the siginfo_t passed to the signal handler.
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//! \param[in] context_address The address in the target process' address
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//! space of the ucontext_t passed to the signal handler.
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//! \param[in] thread_id The thread ID of the thread that received the signal.
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//!
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//! \return `true` if the snapshot could be created, `false` otherwise with
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//! an appropriate message logged.
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bool Initialize(ProcessReaderLinux* process_reader,
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LinuxVMAddress siginfo_address,
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LinuxVMAddress context_address,
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pid_t thread_id);
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// ExceptionSnapshot:
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const CPUContext* Context() const override;
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uint64_t ThreadID() const override;
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uint32_t Exception() const override;
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uint32_t ExceptionInfo() const override;
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uint64_t ExceptionAddress() const override;
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const std::vector<uint64_t>& Codes() const override;
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virtual std::vector<const MemorySnapshot*> ExtraMemory() const override;
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private:
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template <typename Traits>
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bool ReadSiginfo(ProcessReaderLinux* reader, LinuxVMAddress siginfo_address);
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template <typename Traits>
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bool ReadContext(ProcessReaderLinux* reader, LinuxVMAddress context_address);
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union {
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#if defined(ARCH_CPU_X86_FAMILY)
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CPUContextX86 x86;
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CPUContextX86_64 x86_64;
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#elif defined(ARCH_CPU_ARM_FAMILY)
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CPUContextARM arm;
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CPUContextARM64 arm64;
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#elif defined(ARCH_CPU_MIPS_FAMILY)
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CPUContextMIPS mipsel;
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CPUContextMIPS64 mips64;
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#endif
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} context_union_;
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CPUContext context_;
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std::vector<uint64_t> codes_;
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std::vector<std::unique_ptr<internal::MemorySnapshotGeneric>> extra_memory_;
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uint64_t thread_id_;
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uint64_t exception_address_;
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uint32_t signal_number_;
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uint32_t signal_code_;
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InitializationStateDcheck initialized_;
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};
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} // namespace internal
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} // namespace crashpad
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#endif // CRASHPAD_SNAPSHOT_LINUX_EXCEPTION_SNAPSHOT_LINUX_H_
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