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
FileIO()32 FileIO::FileIO() {}
33
~FileIO()34 FileIO::~FileIO() {}
35
36 // static
GetInstance()37 FileIO* FileIO::GetInstance() {
38 return g_file_io.Pointer();
39 }
40
Write(int fd,const void * buf,size_t count)41 ssize_t FileIO::Write(int fd, const void* buf, size_t count) {
42 return HANDLE_EINTR(write(fd, buf, count));
43 }
44
Read(int fd,void * buf,size_t count)45 ssize_t FileIO::Read(int fd, void* buf, size_t count) {
46 return HANDLE_EINTR(read(fd, buf, count));
47 }
48
Close(int fd)49 int FileIO::Close(int fd) {
50 return IGNORE_EINTR(close(fd));
51 }
52
SetFdNonBlocking(int fd)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