419 err_closed(void)  in err_closed()  function
436         return err_closed();  in fileio_fileno()
444         return err_closed();  in fileio_readable()
452         return err_closed();  in fileio_writable()
460         return err_closed();  in fileio_seekable()
481         return err_closed();  in fileio_readinto()
546         return err_closed();  in fileio_readall()
624         return err_closed();  in fileio_read()
679         return err_closed();  in fileio_write()
779         return err_closed();  in fileio_seek()
791         return err_closed();  in fileio_tell()
809         return err_closed();  in fileio_truncate()
954         return err_closed();  in fileio_isatty()