1 // 2 // Copyright (C) 2013 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 #ifndef SHILL_FILE_IO_H_ 18 #define SHILL_FILE_IO_H_ 19 20 #include <base/lazy_instance.h> 21 22 namespace shill { 23 24 // A POSIX file IO wrapper to allow mocking in unit tests. 25 class FileIO { 26 public: 27 virtual ~FileIO(); 28 29 // This is a singleton -- use FileIO::GetInstance()->Foo(). 30 static FileIO* GetInstance(); 31 32 virtual ssize_t Write(int fd, const void* buf, size_t count); 33 virtual ssize_t Read(int fd, void* buf, size_t count); 34 virtual int Close(int fd); 35 virtual int SetFdNonBlocking(int fd); 36 37 protected: 38 FileIO(); 39 40 private: 41 friend struct base::DefaultLazyInstanceTraits<FileIO>; 42 43 DISALLOW_COPY_AND_ASSIGN(FileIO); 44 }; 45 46 } // namespace shill 47 48 #endif // SHILL_FILE_IO_H_ 49
