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// Copyright 2017 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
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stdint.h>
#include <time.h>
#include <string>
#include "base/macros.h"
#include "build/build_config.h"
#include "snapshot/linux/process_reader_linux.h"
#include "snapshot/system_snapshot.h"
#include "util/misc/initialization_state_dcheck.h"
#if defined(ARCH_CPU_X86_FAMILY)
#include "snapshot/x86/cpuid_reader.h"
#endif // ARCH_CPU_X86_FAMILY
namespace crashpad {
namespace internal {
//! \brief A SystemSnapshot of the running system, when the system runs Linux.
class SystemSnapshotLinux final : public SystemSnapshot {
~SystemSnapshotLinux() override;
//! \brief Initializes the object.
//! \param[in] process_reader A reader for the process being snapshotted.
//! \n\n
//! It seems odd that a system snapshot implementation would need a
//! ProcessReaderLinux, but some of the information reported about the
//! system depends on the process it’s being reported for. For example,
//! the architecture returned by GetCPUArchitecture() should be the
//! architecture of the process, which may be different than the native
//! architecture of the system: an x86_64 system can run both x86_64 and
//! 32-bit x86 processes.
//! \param[in] snapshot_time The time of the snapshot being taken.
//! \n\n
//! This parameter is necessary for TimeZone() to determine whether
//! daylight saving time was in effect at the time the snapshot was taken.
//! Otherwise, it would need to base its determination on the current
//! time, which may be different than the snapshot time for snapshots
//! generated around the daylight saving transition time.
void Initialize(ProcessReaderLinux* process_reader,
const timeval* snapshot_time);
// SystemSnapshot:
CPUArchitecture GetCPUArchitecture() const override;
uint32_t CPURevision() const override;
uint8_t CPUCount() const override;
std::string CPUVendor() const override;
void CPUFrequency(uint64_t* current_hz, uint64_t* max_hz) const override;
uint32_t CPUX86Signature() const override;
uint64_t CPUX86Features() const override;
uint64_t CPUX86ExtendedFeatures() const override;
uint32_t CPUX86Leaf7Features() const override;
bool CPUX86SupportsDAZ() const override;
OperatingSystem GetOperatingSystem() const override;
bool OSServer() const override;
void OSVersion(int* major,
int* minor,
int* bugfix,
std::string* build) const override;
std::string OSVersionFull() const override;
bool NXEnabled() const override;
std::string MachineDescription() const override;
void TimeZone(DaylightSavingTimeStatus* dst_status,
int* standard_offset_seconds,
int* daylight_offset_seconds,
std::string* standard_name,
std::string* daylight_name) const override;
void ReadKernelVersion(const std::string& version_string);
std::string os_version_full_;
std::string os_version_build_;
ProcessReaderLinux* process_reader_; // weak
const timeval* snapshot_time_; // weak
#if defined(ARCH_CPU_X86_FAMILY)
CpuidReader cpuid_;
#endif // ARCH_CPU_X86_FAMILY
int os_version_major_;
int os_version_minor_;
int os_version_bugfix_;
uint32_t target_cpu_;
uint8_t cpu_count_;
InitializationStateDcheck initialized_;
} // namespace internal
} // namespace crashpad