00 //sys Seek(fd int, offset int00, whence int) (off int00, err error) = SYS_LSEEK //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) //sys sendfile(outfd int, infd int, offset *int00, count int) (written int, err error) 