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 #include "host/libs/ivserver/ivserver.h" 17 18 #include <sys/select.h> 19 #include <algorithm> 20 21 #include <glog/logging.h> 22 23 #include "common/libs/fs/shared_select.h" 24 #include "host/libs/ivserver/hald_client.h" 25 #include "host/libs/ivserver/qemu_client.h" 26 27 namespace ivserver { 28 29 IVServer::IVServer(const IVServerOptions &options) 30 : vsoc_shmem_(VSoCSharedMemory::New(options.shm_file_path)) { 31 LOG_IF(WARNING, unlink(options.qemu_socket_path.c_str()) == 0) 32 << "Removed existing unix socket: " << options.qemu_socket_path 33 << ". We can't confirm yet whether another instance is running."; 34 qemu_channel_ = cvd::SharedFD::SocketLocalServer( 35 options.qemu_socket_path.c_str(), false, SOCK_STREAM, 0666); 36 LOG_IF(FATAL, !qemu_channel_->IsOpen()) 37 << "Could not create QEmu channel: " << qemu_channel_->StrError(); 38 39 LOG_IF(WARNING, unlink(options.client_socket_path.c_str()) == 0) 40 << "Removed existing unix socket: " << options.client_socket_path 41 << ". We can't confirm yet whether another instance is running."; 42 client_channel_ = cvd::SharedFD::SocketLocalServer( 43 options.client_socket_path.c_str(), false, SOCK_STREAM, 0666); 44 LOG_IF(FATAL, !client_channel_->IsOpen()) 45 << "Could not create Client channel: " << client_channel_->StrError(); 46 } 47 48 void IVServer::Serve() { 49 while (true) { 50 cvd::SharedFDSet rset; 51 rset.Set(qemu_channel_); 52 rset.Set(client_channel_); 53 cvd::Select(&rset, nullptr, nullptr, nullptr); 54 55 if (rset.IsSet(qemu_channel_)) { 56 HandleNewQemuConnection(); 57 } 58 59 if (rset.IsSet(client_channel_)) { 60 HandleNewClientConnection(); 61 } 62 } 63 64 LOG(FATAL) << "Control reached out of event loop"; 65 } 66 67 void IVServer::HandleNewClientConnection() { 68 std::unique_ptr<HaldClient> res = HaldClient::New( 69 *vsoc_shmem_, cvd::SharedFD::Accept(*client_channel_, nullptr, nullptr)); 70 if (!res) { 71 LOG(WARNING) << "Rejecting unsuccessful HALD connection."; 72 } 73 } 74 75 void IVServer::HandleNewQemuConnection() { 76 std::unique_ptr<QemuClient> res = QemuClient::New( 77 *vsoc_shmem_, cvd::SharedFD::Accept(*qemu_channel_, nullptr, nullptr)); 78 79 if (!res) { 80 LOG(WARNING) << "Could not accept new QEmu client."; 81 } 82 } 83 84 } // namespace ivserver 85
