if (cfile->io_functions.seek (cfile->cookie, pos, dir)) return _IO_pos_BAD;  return pos;
return cfile->io_functions.seek (cfile->cookie, pos, dir);
_IO_cookie_seek (fp, offset, dir)     _IO_FILE *fp;     _IO_off64_t offset;     int dir;{  struct _IO_cookie_file *cfile = (struct _IO_cookie_file *) fp;  _IO_fpos64_t pos;  if (cfile->io_functions.seek == NULL)    return _IO_pos_BAD;  pos = _IO_pos_0;  _IO_pos_adjust (pos, offset);  if (cfile->io_functions.seek (cfile->cookie, pos, dir))    return _IO_pos_BAD;  return pos;}