| // Copyright 2016 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef ARC_NETWORKD_HELPER_PROCESS_H_ |
| #define ARC_NETWORKD_HELPER_PROCESS_H_ |
| |
| #include <sys/types.h> |
| |
| #include <string> |
| |
| #include <base/files/scoped_file.h> |
| #include <base/macros.h> |
| #include <google/protobuf/message_lite.h> |
| |
| #include "arc-networkd/options.h" |
| |
| namespace arc_networkd { |
| |
| // Tracks a helper subprocess. Handles forking, cleaning up on termination, |
| // and IPC. |
| // This object is used by the main Manager process. |
| class HelperProcess { |
| public: |
| HelperProcess() = default; |
| virtual ~HelperProcess() = default; |
| |
| // Re-execs arc-networkd with a new argument: "|fd_arg|=N", where N is the |
| // side of |control_fd|. This tells the subprocess to start up a different |
| // mainloop. |
| void Start(int argc, char* argv[], const std::string& fd_arg); |
| |
| // Serializes a protobuf and sends it to the helper process. |
| void SendMessage(const google::protobuf::MessageLite& proto); |
| |
| const pid_t pid() { return pid_; } |
| |
| protected: |
| pid_t pid_{0}; |
| base::ScopedFD control_fd_; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(HelperProcess); |
| }; |
| |
| } // namespace arc_networkd |
| |
| #endif // ARC_NETWORKD_HELPER_PROCESS_H_ |