go.etcd.io/etcd@v3.3.27+incompatible/pkg/fileutil/dir_windows.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 windows
    16  
    17  package fileutil
    18  
    19  import (
    20  	"os"
    21  	"syscall"
    22  )
    23  
    24  const (
    25  	// PrivateDirMode grants owner to make/remove files inside the directory.
    26  	PrivateDirMode = 0777
    27  )
    28  
    29  // OpenDir opens a directory in windows with write access for syncing.
    30  func OpenDir(path string) (*os.File, error) {
    31  	fd, err := openDir(path)
    32  	if err != nil {
    33  		return nil, err
    34  	}
    35  	return os.NewFile(uintptr(fd), path), nil
    36  }
    37  
    38  func openDir(path string) (fd syscall.Handle, err error) {
    39  	if len(path) == 0 {
    40  		return syscall.InvalidHandle, syscall.ERROR_FILE_NOT_FOUND
    41  	}
    42  	pathp, err := syscall.UTF16PtrFromString(path)
    43  	if err != nil {
    44  		return syscall.InvalidHandle, err
    45  	}
    46  	access := uint32(syscall.GENERIC_READ | syscall.GENERIC_WRITE)
    47  	sharemode := uint32(syscall.FILE_SHARE_READ | syscall.FILE_SHARE_WRITE)
    48  	createmode := uint32(syscall.OPEN_EXISTING)
    49  	fl := uint32(syscall.FILE_FLAG_BACKUP_SEMANTICS)
    50  	return syscall.CreateFile(pathp, access, sharemode, nil, createmode, fl, 0)
    51  }