blob: c123395c0040e5c326e852a3feeb90074877cc34 [file] [log] [blame]
khenaidoo59ce9dd2019-11-11 13:05:32 -05001// 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 windows
16
17package fileutil
18
19import (
20 "os"
21 "syscall"
22)
23
24// OpenDir opens a directory in windows with write access for syncing.
25func OpenDir(path string) (*os.File, error) {
26 fd, err := openDir(path)
27 if err != nil {
28 return nil, err
29 }
30 return os.NewFile(uintptr(fd), path), nil
31}
32
33func openDir(path string) (fd syscall.Handle, err error) {
34 if len(path) == 0 {
35 return syscall.InvalidHandle, syscall.ERROR_FILE_NOT_FOUND
36 }
37 pathp, err := syscall.UTF16PtrFromString(path)
38 if err != nil {
39 return syscall.InvalidHandle, err
40 }
41 access := uint32(syscall.GENERIC_READ | syscall.GENERIC_WRITE)
42 sharemode := uint32(syscall.FILE_SHARE_READ | syscall.FILE_SHARE_WRITE)
43 createmode := uint32(syscall.OPEN_EXISTING)
44 fl := uint32(syscall.FILE_FLAG_BACKUP_SEMANTICS)
45 return syscall.CreateFile(pathp, access, sharemode, nil, createmode, fl, 0)
46}