code: func Mounted(fsType FsMagic, mountPath string) (bool, error) {
  	var buf unix.Statfs_t
  	if err := unix.Statfs(mountPath, &buf); err != nil {
  		return false, err
  	}
  	return FsMagic(buf.Type) == fsType, nil
  }
docs: // Mounted checks if the given path is mounted as the fs type