1 // Copyright 2016 The etcd Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 //go:build linux 16 // +build linux 17 18 package fileutil 19 20 import ( 21 "os" 22 "syscall" 23 ) 24 25 // Fsync is a wrapper around file.Sync(). Special handling is needed on darwin platform. 26 func Fsync(f *os.File) error { 27 return f.Sync() 28 } 29 30 // Fdatasync is similar to fsync(), but does not flush modified metadata 31 // unless that metadata is needed in order to allow a subsequent data retrieval 32 // to be correctly handled. 33 func Fdatasync(f *os.File) error { 34 return syscall.Fdatasync(int(f.Fd())) 35 } 36