| // 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 <memory> |
| |
| #include "base/macros.h" |
| #include "util/linux/ptrace_connection.h" |
| #include "util/misc/address_types.h" |
| #include "util/misc/initialization_state_dcheck.h" |
| #include "util/process/process_memory.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); |
| |
| // PtraceConnection: |
| |
| pid_t GetProcessID() override; |
| bool Attach(pid_t tid) override; |
| bool Is64Bit() override; |
| bool GetThreadInfo(pid_t tid, ThreadInfo* info) override; |
| bool ReadFileContents(const base::FilePath& path, |
| std::string* contents) override; |
| ProcessMemory* Memory() override; |
| bool Threads(std::vector<pid_t>* threads) override; |
| ssize_t ReadUpTo(VMAddress address, size_t size, void* buffer) override; |
| |
| private: |
| bool SendFilePath(const char* path, size_t length); |
| |
| std::unique_ptr<ProcessMemory> memory_; |
| 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_ |