mirror of
https://github.com/chromium/crashpad.git
synced 2025-01-15 10:07:56 +08:00
77 lines
2.3 KiB
C
77 lines
2.3 KiB
C
|
// 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
|
||
|
|
//
|
||
|
|
// 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.
|
||
|
|
|
||
|
|
#ifndef CRASHPAD_UTIL_LINUX_AUXILIARY_VECTOR_H_
|
||
|
|
#define CRASHPAD_UTIL_LINUX_AUXILIARY_VECTOR_H_
|
||
|
|
|
||
|
|
#include <sys/types.h>
|
||
|
|
|
||
|
|
#include <map>
|
||
|
|
|
||
|
|
#include "base/logging.h"
|
||
|
|
#include "base/macros.h"
|
||
|
|
|
||
|
|
namespace crashpad {
|
||
|
|
|
||
|
|
//! \brief Read the auxiliary vector for a target process.
|
||
|
|
class AuxiliaryVector {
|
||
|
|
public:
|
||
|
|
AuxiliaryVector();
|
||
|
|
~AuxiliaryVector();
|
||
|
|
|
||
|
|
//! \brief Initializes this object with the auxiliary vector for the process
|
||
|
|
//! with process ID \a pid.
|
||
|
|
//!
|
||
|
|
//! This method must be called successfully prior to calling any other method
|
||
|
|
//! in this class.
|
||
|
|
//!
|
||
|
|
//! \param[in] pid The process ID of a target process.
|
||
|
|
//! \param[in] is_64_bit Whether the target process is 64-bit.
|
||
|
|
//!
|
||
|
|
//! \return `true` on success, `false` on failure with a message logged.
|
||
|
|
bool Initialize(pid_t pid, bool is_64_bit);
|
||
|
|
|
||
|
|
//! \brief Retrieve a value from the vector.
|
||
|
|
//!
|
||
|
|
//! \param[in] type Specifies which value should be retrieved. The possible
|
||
|
|
//! values for this parameter are defined by `<linux/auxvec.h>`.
|
||
|
|
//! \param[out] value The value, casted to an appropriate type, if found.
|
||
|
|
//! \return `true` if the value is found.
|
||
|
|
template <typename V>
|
||
|
|
bool GetValue(uint64_t type, V* value) const {
|
||
|
|
auto iter = values_.find(type);
|
||
|
|
if (iter == values_.end()) {
|
||
|
|
LOG(ERROR) << "value not found";
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return VariableSizeBitCast(
|
||
|
|
iter->second, reinterpret_cast<char*>(value), sizeof(V));
|
||
|
|
}
|
||
|
|
|
||
|
|
protected:
|
||
|
|
std::map<uint64_t, uint64_t> values_;
|
||
|
|
|
||
|
|
private:
|
||
|
|
template <typename ULong>
|
||
|
|
bool Read(pid_t pid);
|
||
|
|
|
||
|
|
static bool VariableSizeBitCast(uint64_t data, char* dest, size_t dest_size);
|
||
|
|
|
||
|
|
DISALLOW_COPY_AND_ASSIGN(AuxiliaryVector);
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace crashpad
|
||
|
|
|
||
|
|
#endif // CRASHPAD_UTIL_LINUX_AUXILIARY_VECTOR_H_
|