mirror of
https://github.com/mudler/luet.git
synced 2025-07-12 22:59:58 +00:00
41 lines
1.1 KiB
Go
41 lines
1.1 KiB
Go
// Copyright 2018 Google Inc.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
// +build !windows
|
|
|
|
package renameio
|
|
|
|
import "os"
|
|
|
|
// WriteFile mirrors ioutil.WriteFile, replacing an existing file with the same
|
|
// name atomically.
|
|
func WriteFile(filename string, data []byte, perm os.FileMode) error {
|
|
t, err := TempFile("", filename)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer t.Cleanup()
|
|
|
|
// Set permissions before writing data, in case the data is sensitive.
|
|
if err := t.Chmod(perm); err != nil {
|
|
return err
|
|
}
|
|
|
|
if _, err := t.Write(data); err != nil {
|
|
return err
|
|
}
|
|
|
|
return t.CloseAtomicallyReplace()
|
|
}
|