1 /* 2 * Copyright 2023 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 17 #pragma once 18 19 #include "common/libs/fs/shared_fd.h" 20 #include "common/libs/security/channel.h" 21 22 namespace cuttlefish { 23 namespace secure_env { 24 25 class SharedFdChannel : public Channel { 26 public: 27 SharedFdChannel(SharedFD input, SharedFD output); 28 Result<void> SendRequest(uint32_t command, void* message, size_t message_size) override; 29 Result<void> SendResponse(uint32_t command, void* message, size_t message_size) override; 30 Result<ManagedMessage> ReceiveMessage() override; 31 32 private: 33 SharedFD input_; 34 SharedFD output_; 35 36 Result<void> SendMessage(uint32_t command, bool response, void* message, size_t message_size); 37 }; 38 39 } // namespace secure_env 40 } // namespace cuttlefish