#ifndef lintstatic char sccsid[] = "@(#)busy.c	4.1 (Berkeley) 7/4/83";#endif/* * busy: print an indication of how busy the system is for games. */#ifndef MAX# define MAX 30#endif#include <stdio.h>main(argc, argv)char **argv;{	double la[3];	double max;	loadav(la);	max = la[0];	if (la[1] > max) max = la[1];	if (la[2] > max) max = la[2];	if (argc > 1)		printf("1=%g, 5=%g, 15=%g, max=%g\n", la[0], la[1], la[2], max);	if (max > MAX)		printf("100\n");	/* incredibly high, no games allowed */	else		printf("0\n");	exit(0);}#include <sys/types.h>#include <a.out.h>struct	nlist nl[] = {	{ "_avenrun" },	{ 0 },};loadav(avenrun)double	*avenrun;{	register int i;	int	kmem;	if ((kmem = open("/dev/kmem", 0)) < 0) {		fprintf(stderr, "No kmem\n");		exit(1);	}	nlist("/vmunix", nl);	if (nl[0].n_type==0) {		fprintf(stderr, "No namelist\n");		exit(1);	}	lseek(kmem, (long)nl[0].n_value, 0);	read(kmem, avenrun, 3*sizeof(*avenrun));}