| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * 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 TRANSPORT_H_ |
| #define TRANSPORT_H_ |
| |
| #include <base/macros.h> |
| |
| // General interface to allow the fastboot protocol to be used over different |
| // types of transports. |
| class Transport { |
| public: |
| Transport() = default; |
| virtual ~Transport() = default; |
| |
| // Reads |len| bytes into |data|. Returns the number of bytes actually |
| // read or -1 on error. |
| virtual ssize_t Read(void* data, size_t len) = 0; |
| |
| // Writes |len| bytes from |data|. Returns the number of bytes actually |
| // written or -1 on error. |
| virtual ssize_t Write(const void* data, size_t len) = 0; |
| |
| // Closes the underlying transport. Returns 0 on success. |
| virtual int Close() = 0; |
| |
| // Blocks until the transport disconnects. Transports that don't support |
| // this will return immediately. Returns 0 on success. |
| virtual int WaitForDisconnect() { return 0; } |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(Transport); |
| }; |
| |
| #endif // TRANSPORT_H_ |