github.com/avfs/avfs@v0.33.1-0.20240303173310-c6ba67c33eb7/umask_windows.go (about)

     1  //
     2  //  Copyright 2023 The AVFS authors
     3  //
     4  //  Licensed under the Apache License, Version 2.0 (the "License");
     5  //  you may not use this file except in compliance with the License.
     6  //  You may obtain a copy of the License at
     7  //
     8  //  	http://www.apache.org/licenses/LICENSE-2.0
     9  //
    10  //  Unless required by applicable law or agreed to in writing, software
    11  //  distributed under the License is distributed on an "AS IS" BASIS,
    12  //  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  //  See the License for the specific language governing permissions and
    14  //  limitations under the License.
    15  //
    16  
    17  //go:build windows
    18  
    19  package avfs
    20  
    21  import (
    22  	"io/fs"
    23  	"sync/atomic"
    24  )
    25  
    26  // umask is the file mode creation mask.
    27  var umask fs.FileMode = 0o111 //nolint:gochecknoglobals // Used by UMask and SetUMask.
    28  
    29  // SetUMask sets the file mode creation mask.
    30  func SetUMask(mask fs.FileMode) error {
    31  	m := uint32(mask & fs.ModePerm)
    32  	atomic.StoreUint32((*uint32)(&umask), m)
    33  
    34  	return nil
    35  }
    36  
    37  // UMask returns the file mode creation mask.
    38  func UMask() fs.FileMode {
    39  	um := atomic.LoadUint32((*uint32)(&umask))
    40  
    41  	return fs.FileMode(um)
    42  }