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 #include "shill/file_io.h" 18 19 #include <fcntl.h> 20 #include <unistd.h> 21 22 #include <base/posix/eintr_wrapper.h> 23 24 namespace shill { 25 26 namespace { 27 28 base::LazyInstance<FileIO> g_file_io = LAZY_INSTANCE_INITIALIZER; 29 30 } // namespace 31 32 FileIO::FileIO() {} 33 34 FileIO::~FileIO() {} 35 36 // static 37 FileIO* FileIO::GetInstance() { 38 return g_file_io.Pointer(); 39 } 40 41 ssize_t FileIO::Write(int fd, const void* buf, size_t count) { 42 return HANDLE_EINTR(write(fd, buf, count)); 43 } 44 45 ssize_t FileIO::Read(int fd, void* buf, size_t count) { 46 return HANDLE_EINTR(read(fd, buf, count)); 47 } 48 49 int FileIO::Close(int fd) { 50 return IGNORE_EINTR(close(fd)); 51 } 52 53 int FileIO::SetFdNonBlocking(int fd) { 54 const int flags = HANDLE_EINTR(fcntl(fd, F_GETFL)) | O_NONBLOCK; 55 return HANDLE_EINTR(fcntl(fd, F_SETFL, flags)); 56 } 57 58 } // namespace shill 59
