// Write file to temp and atomically move when everything else succeeds.
Write file to temp and atomically move when everything else succeeds.
// Write file to temp and atomically move when everything else succeeds .
func WriteFileAtomic(filename string, data []byte, perm os.FileMode) error {
	dir, name := path.Dir(filename), path.Base(filename)
	f, err := ioutil.TempFile(dir, name)
	if err != nil {
		return err
	}
	n, err := f.Write(data)
	f.Close()
	if err == nil && n < len(data) {
		err = io.ErrShortWrite
	} else {
		err = os.Chmod(f.Name(), perm)
	}
	if err != nil {
		os.Remove(f.Name())
		return err
	}
	return os.Rename(f.Name(), filename)
}
func WriteFileAtomic ( filename string , data [ ] byte , perm os . FileMode ) error { dir , name := path . Dir ( filename ) , path . Base ( filename ) f , err := ioutil . TempFile ( dir , name ) if err != nil { return err } n , err := f . Write ( data ) f . Close ( ) if err == nil && n < len ( data ) { err = io . ErrShortWrite } else { err = os . Chmod ( f . Name ( ) , perm ) } if err != nil { os . Remove ( f . Name ( ) ) return err } return os . Rename ( f . Name ( ) , filename ) }
Write file to temp and atomically move when everything else succeeds.
Write file to temp and atomically move when everything else succeeds .