41 lines
1.3 KiB
Go
41 lines
1.3 KiB
Go
// Copyright 2016 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build darwin
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package fileutil
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import (
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"os"
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"syscall"
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)
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// Fsync on HFS/OSX flushes the data on to the physical drive but the drive
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// may not write it to the persistent media for quite sometime and it may be
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// written in out-of-order sequence. Using F_FULLFSYNC ensures that the
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// physical drive's buffer will also get flushed to the media.
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func Fsync(f *os.File) error {
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_, _, errno := syscall.Syscall(syscall.SYS_FCNTL, f.Fd(), uintptr(syscall.F_FULLFSYNC), uintptr(0))
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if errno == 0 {
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return nil
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}
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return errno
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}
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// Fdatasync on darwin platform invokes fcntl(F_FULLFSYNC) for actual persistence
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// on physical drive media.
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func Fdatasync(f *os.File) error {
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return Fsync(f)
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}
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