mirror of
https://github.com/chromium/crashpad.git
synced 2024-12-29 08:39:44 +08:00
0924e56751
A PtraceBroker/Client pair implement a PtraceConnection over a socket. The broker runs in a process with `ptrace` capabilities for the target process and serves requests for the client over a socket. Bug: crashpad:30 Change-Id: Ied19bcedf84b46c8f68440fd1c284b2126470e5e Reviewed-on: https://chromium-review.googlesource.com/780397 Commit-Queue: Joshua Peraza <jperaza@chromium.org> Reviewed-by: Mark Mentovai <mark@chromium.org>
86 lines
3.0 KiB
C++
86 lines
3.0 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_PTRACE_CLIENT_H_
|
|
#define CRASHPAD_UTIL_LINUX_PTRACE_CLIENT_H_
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include "base/macros.h"
|
|
#include "util/linux/ptrace_connection.h"
|
|
#include "util/misc/address_types.h"
|
|
#include "util/misc/initialization_state_dcheck.h"
|
|
|
|
namespace crashpad {
|
|
|
|
//! \brief Implements a PtraceConnection over a socket.
|
|
//!
|
|
//! This class forms the client half of the connection and is typically used
|
|
//! when the current process does not have `ptrace` capabilities on the target
|
|
//! process. It should be created with a socket connected to a PtraceBroker.
|
|
class PtraceClient : public PtraceConnection {
|
|
public:
|
|
PtraceClient();
|
|
~PtraceClient();
|
|
|
|
//! \brief Initializes this object.
|
|
//!
|
|
//! This method must be successfully called before any other method in this
|
|
//! class.
|
|
//!
|
|
//! \param[in] sock A socket connected to a PtraceBroker. Does not take
|
|
//! ownership of the socket.
|
|
//! \param[in] pid The process ID of the process to form a PtraceConnection
|
|
//! with.
|
|
//! \return `true` on success. `false` on failure with a message logged.
|
|
bool Initialize(int sock, pid_t pid);
|
|
|
|
//! \brief Copies memory from the target process into a caller-provided buffer
|
|
//! in the current process.
|
|
//!
|
|
//! TODO(jperaza): In order for this to be usable, PtraceConnection will need
|
|
//! to surface it, possibly by inheriting from ProcessMemory, or providing a
|
|
//! method to return a ProcessMemory*.
|
|
//!
|
|
//! \param[in] address The address, in the target process' address space, of
|
|
//! the memory region to copy.
|
|
//! \param[in] size The size, in bytes, of the memory region to copy.
|
|
//! \a buffer must be at least this size.
|
|
//! \param[out] buffer The buffer into which the contents of the other
|
|
//! process' memory will be copied.
|
|
//!
|
|
//! \return `true` on success, with \a buffer filled appropriately. `false` on
|
|
//! failure, with a message logged.
|
|
bool Read(VMAddress address, size_t size, void* buffer);
|
|
|
|
// PtraceConnection:
|
|
|
|
pid_t GetProcessID() override;
|
|
bool Attach(pid_t tid) override;
|
|
bool Is64Bit() override;
|
|
bool GetThreadInfo(pid_t tid, ThreadInfo* info) override;
|
|
|
|
private:
|
|
int sock_;
|
|
pid_t pid_;
|
|
bool is_64_bit_;
|
|
InitializationStateDcheck initialized_;
|
|
|
|
DISALLOW_COPY_AND_ASSIGN(PtraceClient);
|
|
};
|
|
|
|
} // namespace crashpad
|
|
|
|
#endif // CRASHPAD_UTIL_LINUX_PTRACE_CLIENT_H_
|