go.etcd.io/etcd@v3.3.27+incompatible/pkg/fileutil/sync_linux.go (about)

     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  // +build linux
    16  
    17  package fileutil
    18  
    19  import (
    20  	"os"
    21  	"syscall"
    22  )
    23  
    24  // Fsync is a wrapper around file.Sync(). Special handling is needed on darwin platform.
    25  func Fsync(f *os.File) error {
    26  	return f.Sync()
    27  }
    28  
    29  // Fdatasync is similar to fsync(), but does not flush modified metadata
    30  // unless that metadata is needed in order to allow a subsequent data retrieval
    31  // to be correctly handled.
    32  func Fdatasync(f *os.File) error {
    33  	return syscall.Fdatasync(int(f.Fd()))
    34  }