'Return the object as a GNU header block sequence.'

def create_gnu_header(self, info, encoding, errors):

    info['magic'] = GNU_MAGIC
    buf = ''
    if (len(info['linkname']) > LENGTH_LINK):
        buf += self._create_gnu_long_header(info['linkname'], GNUTYPE_LONGLINK, encoding, errors)
    if (len(info['name']) > LENGTH_NAME):
        buf += self._create_gnu_long_header(info['name'], GNUTYPE_LONGNAME, encoding, errors)
    return (buf + self._create_header(info, GNU_FORMAT, encoding, errors))
