square.x

让你了解Unix进程间的通信是如何实现的

struct square_in {		/* input (argument) */
  long	arg1;
};

struct square_out {		/* output (result) */
  long	res1;
};

program SQUARE_PROG {
    version SQUARE_VERS {
	square_out	SQUAREPROC(square_in) = 1; /* procedure number = 1 */
    } = 1;				/* version number */
} = 0x31230000;			/* program number */