code: func (mounter *Mounter) MakeFile(pathname string) error {
  	f, err := os.OpenFile(pathname, os.O_CREATE, os.FileMode(0644))
  	defer f.Close()
  	if err != nil {
  		if !os.IsExist(err) {
  			return err
  		}
  	}
  	return nil
  }
docs: // MakeFile creates an empty file