usr/src/usr.bin/ruptime/ruptime.c

/*
 * Copyright (c) 1983 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1983 The Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)ruptime.c	5.5 (Berkeley) %G%";
#endif /* not lint */

#include <sys/param.h>
#include <sys/dir.h>
#include <sys/file.h>
#include <protocols/rwhod.h>
#include <stdio.h>

#define	NHOSTS	100
int	nhosts;
struct hs {
	struct	whod *hs_wd;
	int	hs_nusers;
} hs[NHOSTS];
struct	whod awhod;

#define	WHDRSIZE	(sizeof (awhod) - sizeof (awhod.wd_we))
#define	RWHODIR		"/usr/spool/rwho"
#define	down(h)		(now - (h)->hs_wd->wd_recvtime > 11 * 60)

time_t	now;
int	rflg = 1;
int	hscmp(), ucmp(), lcmp(), tcmp();

main(argc, argv)
	int argc;
	char **argv;
{
	extern char *optarg;
	extern int optind;
	register struct hs *hsp = hs;
	register struct whod *wd;
	register struct whoent *we;
	register DIR *dirp;
	struct direct *dp;
	int aflg, cc, ch, f, i, maxloadav;
	char buf[sizeof(struct whod)];
	int (*cmp)() = hscmp;
	time_t time();
	char *interval(), *malloc();

	aflg = 0;
	maxloadav = -1;
	while ((ch = getopt(argc, argv, "alrut")) != EOF)
		switch((char)ch) {
		case 'a':
			aflg = 1;
			break;
		case 'l':
			cmp = lcmp;
			break;
		case 'r':
			rflg = -1;
			break;
		case 't':
			cmp = tcmp;
			break;
		case 'u':
			cmp = ucmp;
			break;
		default:
			fprintf(stderr, "usage: ruptime [-alrut]\n");
			exit(1);
		}

	if (chdir(RWHODIR) || (dirp = opendir(".")) == NULL) {
		perror(RWHODIR);
		exit(1);
	}
	while (dp = readdir(dirp)) {
		if (dp->d_ino == 0 || strncmp(dp->d_name, "whod.", 5))
			continue;
		if (nhosts == NHOSTS) {
			fprintf(stderr, "ruptime: too many hosts\n");
			exit(1);
		}
		f = open(dp->d_name, O_RDONLY, 0);
		if (f > 0) {
			cc = read(f, buf, sizeof(struct whod));
			if (cc >= WHDRSIZE) {
				/* NOSTRICT */
				hsp->hs_wd = (struct whod *)malloc(WHDRSIZE);
				wd = (struct whod *)buf;
				bcopy(wd, hsp->hs_wd, WHDRSIZE);
				hsp->hs_nusers = 0;
				for (i = 0; i < 2; i++)
					if (wd->wd_loadav[i] > maxloadav)
						maxloadav = wd->wd_loadav[i];
				we = (struct whoent *)(buf+cc);
				while (--we >= wd->wd_we)
					if (aflg || we->we_idle < 3600)
						hsp->hs_nusers++;
				nhosts++; hsp++;
			}
			(void)close(f);
		}
	}
	if (!nhosts) {
		printf("ruptime: no hosts!?!\n");
		exit(1);
	}
	qsort((char *)hs, nhosts, sizeof (hs[0]), cmp);
	(void)time(&now);
	for (i = 0; i < nhosts; i++) {
		hsp = &hs[i];
		if (down(hsp)) {
			printf("%-12.12s%s\n", hsp->hs_wd->wd_hostname,
			    interval(now - hsp->hs_wd->wd_recvtime, "down"));
			continue;
		}
		printf("%-12.12s%s,  %4d user%s  load %*.2f, %*.2f, %*.2f\n",
		    hsp->hs_wd->wd_hostname,
		    interval(hsp->hs_wd->wd_sendtime -
			hsp->hs_wd->wd_boottime, "  up"),
		    hsp->hs_nusers,
		    hsp->hs_nusers == 1 ? ", " : "s,",
		    maxloadav >= 1000 ? 5 : 4,
			hsp->hs_wd->wd_loadav[0] / 100.0,
		    maxloadav >= 1000 ? 5 : 4,
		        hsp->hs_wd->wd_loadav[1] / 100.0,
		    maxloadav >= 1000 ? 5 : 4,
		        hsp->hs_wd->wd_loadav[2] / 100.0);
		cfree(hsp->hs_wd);
	}
	exit(0);
}

char *
interval(tval, updown)
	time_t tval;
	char *updown;
{
	static char resbuf[32];
	int days, hours, minutes;

	if (tval < 0 || tval > 365*24*60*60) {
		(void)sprintf(resbuf, "   %s ??:??", updown);
		return(resbuf);
	}
	minutes = (tval + 59) / 60;		/* round to minutes */
	hours = minutes / 60; minutes %= 60;
	days = hours / 24; hours %= 24;
	if (days)
		(void)sprintf(resbuf, "%s %2d+%02d:%02d",
		    updown, days, hours, minutes);
	else
		(void)sprintf(resbuf, "%s    %2d:%02d",
		    updown, hours, minutes);
	return(resbuf);
}

hscmp(h1, h2)
	struct hs *h1, *h2;
{
	return(rflg * strcmp(h1->hs_wd->wd_hostname, h2->hs_wd->wd_hostname));
}

/*
 * Compare according to load average.
 */
lcmp(h1, h2)
	struct hs *h1, *h2;
{
	if (down(h1))
		if (down(h2))
			return(tcmp(h1, h2));
		else
			return(rflg);
	else if (down(h2))
		return(-rflg);
	else
		return(rflg *
			(h2->hs_wd->wd_loadav[0] - h1->hs_wd->wd_loadav[0]));
}

/*
 * Compare according to number of users.
 */
ucmp(h1, h2)
	struct hs *h1, *h2;
{
	if (down(h1))
		if (down(h2))
			return(tcmp(h1, h2));
		else
			return(rflg);
	else if (down(h2))
		return(-rflg);
	else
		return(rflg * (h2->hs_nusers - h1->hs_nusers));
}

/*
 * Compare according to uptime.
 */
tcmp(h1, h2)
	struct hs *h1, *h2;
{
	return(rflg * (
		(down(h2) ? h2->hs_wd->wd_recvtime - now
			  : h2->hs_wd->wd_sendtime - h2->hs_wd->wd_boottime)
		-
		(down(h1) ? h1->hs_wd->wd_recvtime - now
			  : h1->hs_wd->wd_sendtime - h1->hs_wd->wd_boottime)
	));
}
Commit	Line	Data
	1	/*
	2	* Copyright (c) 1983 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms are permitted
	6	* provided that the above copyright notice and this paragraph are
	7	* duplicated in all such forms and that any documentation,
	8	* advertising materials, and other materials related to such
	9	* distribution and use acknowledge that the software was developed
	10	* by the University of California, Berkeley. The name of the
	11	* University may not be used to endorse or promote products derived
	12	* from this software without specific prior written permission.
	13	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
	14	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
	15	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
	16	*/
	17
	18	#ifndef lint
	19	char copyright[] =
	20	"@(#) Copyright (c) 1983 The Regents of the University of California.\n\
	21	All rights reserved.\n";
	22	#endif /* not lint */
	23
	24	#ifndef lint
	25	static char sccsid[] = "@(#)ruptime.c 5.5 (Berkeley) %G%";
	26	#endif /* not lint */
	27
	28	#include <sys/param.h>
	29	#include <sys/dir.h>
	30	#include <sys/file.h>
	31	#include <protocols/rwhod.h>
	32	#include <stdio.h>
	33
	34	#define NHOSTS 100
	35	int nhosts;
	36	struct hs {
	37	struct whod *hs_wd;
	38	int hs_nusers;
	39	} hs[NHOSTS];
	40	struct whod awhod;
	41
	42	#define WHDRSIZE (sizeof (awhod) - sizeof (awhod.wd_we))
	43	#define RWHODIR "/usr/spool/rwho"
	44	#define down(h) (now - (h)->hs_wd->wd_recvtime > 11 * 60)
	45
	46	time_t now;
	47	int rflg = 1;
	48	int hscmp(), ucmp(), lcmp(), tcmp();
	49
	50	main(argc, argv)
	51	int argc;
	52	char **argv;
	53	{
	54	extern char *optarg;
	55	extern int optind;
	56	register struct hs *hsp = hs;
	57	register struct whod *wd;
	58	register struct whoent *we;
	59	register DIR *dirp;
	60	struct direct *dp;
	61	int aflg, cc, ch, f, i, maxloadav;
	62	char buf[sizeof(struct whod)];
	63	int (*cmp)() = hscmp;
	64	time_t time();
	65	char interval(), malloc();
	66
	67	aflg = 0;
	68	maxloadav = -1;
	69	while ((ch = getopt(argc, argv, "alrut")) != EOF)
	70	switch((char)ch) {
	71	case 'a':
	72	aflg = 1;
	73	break;
	74	case 'l':
	75	cmp = lcmp;
	76	break;
	77	case 'r':
	78	rflg = -1;
	79	break;
	80	case 't':
	81	cmp = tcmp;
	82	break;
	83	case 'u':
	84	cmp = ucmp;
	85	break;
	86	default:
	87	fprintf(stderr, "usage: ruptime [-alrut]\n");
	88	exit(1);
	89	}
	90
	91	if (chdir(RWHODIR) \|\| (dirp = opendir(".")) == NULL) {
	92	perror(RWHODIR);
	93	exit(1);
	94	}
	95	while (dp = readdir(dirp)) {
	96	if (dp->d_ino == 0 \|\| strncmp(dp->d_name, "whod.", 5))
	97	continue;
	98	if (nhosts == NHOSTS) {
	99	fprintf(stderr, "ruptime: too many hosts\n");
	100	exit(1);
	101	}
	102	f = open(dp->d_name, O_RDONLY, 0);
	103	if (f > 0) {
	104	cc = read(f, buf, sizeof(struct whod));
	105	if (cc >= WHDRSIZE) {
	106	/* NOSTRICT */
	107	hsp->hs_wd = (struct whod *)malloc(WHDRSIZE);
	108	wd = (struct whod *)buf;
	109	bcopy(wd, hsp->hs_wd, WHDRSIZE);
	110	hsp->hs_nusers = 0;
	111	for (i = 0; i < 2; i++)
	112	if (wd->wd_loadav[i] > maxloadav)
	113	maxloadav = wd->wd_loadav[i];
	114	we = (struct whoent *)(buf+cc);
	115	while (--we >= wd->wd_we)
	116	if (aflg \|\| we->we_idle < 3600)
	117	hsp->hs_nusers++;
	118	nhosts++; hsp++;
	119	}
	120	(void)close(f);
	121	}
	122	}
	123	if (!nhosts) {
	124	printf("ruptime: no hosts!?!\n");
	125	exit(1);
	126	}
	127	qsort((char *)hs, nhosts, sizeof (hs[0]), cmp);
	128	(void)time(&now);
	129	for (i = 0; i < nhosts; i++) {
	130	hsp = &hs[i];
	131	if (down(hsp)) {
	132	printf("%-12.12s%s\n", hsp->hs_wd->wd_hostname,
	133	interval(now - hsp->hs_wd->wd_recvtime, "down"));
	134	continue;
	135	}
	136	printf("%-12.12s%s, %4d user%s load %.2f, %.2f, %*.2f\n",
	137	hsp->hs_wd->wd_hostname,
	138	interval(hsp->hs_wd->wd_sendtime -
	139	hsp->hs_wd->wd_boottime, " up"),
	140	hsp->hs_nusers,
	141	hsp->hs_nusers == 1 ? ", " : "s,",
	142	maxloadav >= 1000 ? 5 : 4,
	143	hsp->hs_wd->wd_loadav[0] / 100.0,
	144	maxloadav >= 1000 ? 5 : 4,
	145	hsp->hs_wd->wd_loadav[1] / 100.0,
	146	maxloadav >= 1000 ? 5 : 4,
	147	hsp->hs_wd->wd_loadav[2] / 100.0);
	148	cfree(hsp->hs_wd);
	149	}
	150	exit(0);
	151	}
	152
	153	char *
	154	interval(tval, updown)
	155	time_t tval;
	156	char *updown;
	157	{
	158	static char resbuf[32];
	159	int days, hours, minutes;
	160
	161	if (tval < 0 \|\| tval > 3652460*60) {
	162	(void)sprintf(resbuf, " %s ??:??", updown);
	163	return(resbuf);
	164	}
	165	minutes = (tval + 59) / 60; /* round to minutes */
	166	hours = minutes / 60; minutes %= 60;
	167	days = hours / 24; hours %= 24;
	168	if (days)
	169	(void)sprintf(resbuf, "%s %2d+%02d:%02d",
	170	updown, days, hours, minutes);
	171	else
	172	(void)sprintf(resbuf, "%s %2d:%02d",
	173	updown, hours, minutes);
	174	return(resbuf);
	175	}
	176
	177	hscmp(h1, h2)
	178	struct hs h1, h2;
	179	{
	180	return(rflg * strcmp(h1->hs_wd->wd_hostname, h2->hs_wd->wd_hostname));
	181	}
	182
	183	/*
	184	* Compare according to load average.
	185	*/
	186	lcmp(h1, h2)
	187	struct hs h1, h2;
	188	{
	189	if (down(h1))
	190	if (down(h2))
	191	return(tcmp(h1, h2));
	192	else
	193	return(rflg);
	194	else if (down(h2))
	195	return(-rflg);
	196	else
	197	return(rflg *
	198	(h2->hs_wd->wd_loadav[0] - h1->hs_wd->wd_loadav[0]));
	199	}
	200
	201	/*
	202	* Compare according to number of users.
	203	*/
	204	ucmp(h1, h2)
	205	struct hs h1, h2;
	206	{
	207	if (down(h1))
	208	if (down(h2))
	209	return(tcmp(h1, h2));
	210	else
	211	return(rflg);
	212	else if (down(h2))
	213	return(-rflg);
	214	else
	215	return(rflg * (h2->hs_nusers - h1->hs_nusers));
	216	}
	217
	218	/*
	219	* Compare according to uptime.
	220	*/
	221	tcmp(h1, h2)
	222	struct hs h1, h2;
	223	{
	224	return(rflg * (
	225	(down(h2) ? h2->hs_wd->wd_recvtime - now
	226	: h2->hs_wd->wd_sendtime - h2->hs_wd->wd_boottime)
	227	-
	228	(down(h1) ? h1->hs_wd->wd_recvtime - now
	229	: h1->hs_wd->wd_sendtime - h1->hs_wd->wd_boottime)
	230	));
	231	}