1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 #pragma once 17 18 #include <string> 19 20 #include "common/libs/fs/shared_fd.h" 21 #include "common/libs/fs/shared_select.h" 22 //#include "host/libs/monitor/kernel_log_client.h" 23 24 namespace monitor { 25 // KernelLogServer manages incoming kernel log connection from QEmu. Only accept 26 // one connection. 27 class KernelLogServer { 28 public: 29 KernelLogServer(const std::string& socket_name, 30 const std::string& log_name, 31 bool deprecated_boot_completed); 32 33 ~KernelLogServer() = default; 34 35 // Initialize this instance of Server. 36 // Returns true, if initialization was successful. 37 bool Init(); 38 39 // BeforeSelect is Called right before Select() to populate interesting 40 // SharedFDs. 41 void BeforeSelect(cvd::SharedFDSet* fd_read) const; 42 43 // AfterSelect is Called right after Select() to detect and respond to changes 44 // on affected SharedFDs. 45 void AfterSelect(const cvd::SharedFDSet& fd_read); 46 47 private: 48 // Create kernel log server socket. 49 // Returns true, if socket was successfully created. 50 bool CreateServerSocket(); 51 52 // Handle new client connection. Only accept one connection. 53 void HandleIncomingConnection(); 54 55 // Respond to message from remote client. 56 // Returns false, if client disconnected. 57 bool HandleIncomingMessage(); 58 59 std::string name_; 60 cvd::SharedFD server_fd_; 61 cvd::SharedFD client_fd_; 62 cvd::SharedFD log_fd_; 63 std::string line_; 64 bool deprecated_boot_completed_; 65 66 KernelLogServer(const KernelLogServer&) = delete; 67 KernelLogServer& operator=(const KernelLogServer&) = delete; 68 }; 69 70 } // namespace monitor 71
