1/*
2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3 * unrestricted use provided that this legend is included on all tape
4 * media and as a part of the software program in whole or part.  Users
5 * may copy or modify Sun RPC without charge, but are not authorized
6 * to license or distribute it to anyone else except as part of a product or
7 * program developed by the user.
8 *
9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
12 *
13 * Sun RPC is provided with no support and without any obligation on the
14 * part of Sun Microsystems, Inc. to assist in its use, correction,
15 * modification or enhancement.
16 *
17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
19 * OR ANY PART THEREOF.
20 *
21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
22 * or profits or other special, indirect and consequential damages, even if
23 * Sun has been advised of the possibility of such damages.
24 *
25 * Sun Microsystems, Inc.
26 * 2550 Garcia Avenue
27 * Mountain View, California  94043
28 */
29
30#ifndef lint
31#if 0
32static char sccsid[] = "from: @(#)rpc.rstatd.c 1.1 86/09/25 Copyr 1984 Sun Micro";
33static char sccsid[] = "from: @(#)rstat_proc.c	2.2 88/08/01 4.0 RPCSRC";
34#endif
35static const char rcsid[] =
36  "$FreeBSD$";
37#endif
38
39/*
40 * rstat service:  built with rstat.x and derived from rpc.rstatd.c
41 *
42 * Copyright (c) 1984 by Sun Microsystems, Inc.
43 */
44
45#include <sys/types.h>
46#include <sys/socket.h>
47#include <sys/sysctl.h>
48#include <sys/time.h>
49#include <sys/resource.h>
50#include <sys/vmmeter.h>
51#include <sys/param.h>
52
53#include <err.h>
54#include <errno.h>
55#include <fcntl.h>
56#include <limits.h>
57#include <signal.h>
58#include <stdio.h>
59#include <stdlib.h>
60#include <string.h>
61#include <syslog.h>
62#include <unistd.h>
63#include <devstat.h>
64
65#include <net/if.h>
66#include <net/if_mib.h>
67
68#undef FSHIFT			 /* Use protocol's shift and scale values */
69#undef FSCALE
70#undef if_ipackets
71#undef if_ierrors
72#undef if_opackets
73#undef if_oerrors
74#undef if_collisions
75#include <rpcsvc/rstat.h>
76
77int haveadisk(void);
78void updatexfers(int, int *);
79int stats_service(void);
80
81extern int from_inetd;
82int sincelastreq = 0;		/* number of alarms since last request */
83extern int closedown;
84
85union {
86    struct stats s1;
87    struct statsswtch s2;
88    struct statstime s3;
89} stats_all;
90
91void updatestat();
92static int stat_is_init = 0;
93
94static int	cp_time_xlat[RSTAT_CPUSTATES] = { CP_USER, CP_NICE, CP_SYS,
95							CP_IDLE };
96static long	bsd_cp_time[CPUSTATES];
97
98
99#ifndef FSCALE
100#define FSCALE (1 << 8)
101#endif
102
103void
104stat_init(void)
105{
106    stat_is_init = 1;
107    alarm(0);
108    updatestat();
109    (void) signal(SIGALRM, updatestat);
110    alarm(1);
111}
112
113statstime *
114rstatproc_stats_3_svc(void *argp, struct svc_req *rqstp)
115{
116    if (! stat_is_init)
117        stat_init();
118    sincelastreq = 0;
119    return(&stats_all.s3);
120}
121
122statsswtch *
123rstatproc_stats_2_svc(void *argp, struct svc_req *rqstp)
124{
125    if (! stat_is_init)
126        stat_init();
127    sincelastreq = 0;
128    return(&stats_all.s2);
129}
130
131stats *
132rstatproc_stats_1_svc(void *argp, struct svc_req *rqstp)
133{
134    if (! stat_is_init)
135        stat_init();
136    sincelastreq = 0;
137    return(&stats_all.s1);
138}
139
140u_int *
141rstatproc_havedisk_3_svc(void *argp, struct svc_req *rqstp)
142{
143    static u_int have;
144
145    if (! stat_is_init)
146        stat_init();
147    sincelastreq = 0;
148    have = haveadisk();
149	return(&have);
150}
151
152u_int *
153rstatproc_havedisk_2_svc(void *argp, struct svc_req *rqstp)
154{
155    return(rstatproc_havedisk_3_svc(argp, rqstp));
156}
157
158u_int *
159rstatproc_havedisk_1_svc(void *argp, struct svc_req *rqstp)
160{
161    return(rstatproc_havedisk_3_svc(argp, rqstp));
162}
163
164void
165updatestat(void)
166{
167	int i, hz;
168	struct clockinfo clockrate;
169	struct vmmeter cnt;
170	struct ifmibdata ifmd;
171	double avrun[3];
172	struct timeval tm, btm;
173	int mib[6];
174	size_t len;
175	int ifcount;
176
177#ifdef DEBUG
178	fprintf(stderr, "entering updatestat\n");
179#endif
180	if (sincelastreq >= closedown) {
181#ifdef DEBUG
182                fprintf(stderr, "about to closedown\n");
183#endif
184                if (from_inetd)
185                        exit(0);
186                else {
187                        stat_is_init = 0;
188                        return;
189                }
190	}
191	sincelastreq++;
192
193	mib[0] = CTL_KERN;
194	mib[1] = KERN_CLOCKRATE;
195	len = sizeof clockrate;
196	if (sysctl(mib, 2, &clockrate, &len, 0, 0) < 0) {
197		syslog(LOG_ERR, "sysctl(kern.clockrate): %m");
198		exit(1);
199	}
200	hz = clockrate.hz;
201
202	len = sizeof(bsd_cp_time);
203	if (sysctlbyname("kern.cp_time", bsd_cp_time, &len, 0, 0) < 0) {
204		syslog(LOG_ERR, "sysctl(kern.cp_time): %m");
205		exit(1);
206	}
207	for(i = 0; i < RSTAT_CPUSTATES ; i++)
208		stats_all.s1.cp_time[i] = bsd_cp_time[cp_time_xlat[i]];
209
210        (void)getloadavg(avrun, sizeof(avrun) / sizeof(avrun[0]));
211
212	stats_all.s2.avenrun[0] = avrun[0] * FSCALE;
213	stats_all.s2.avenrun[1] = avrun[1] * FSCALE;
214	stats_all.s2.avenrun[2] = avrun[2] * FSCALE;
215
216	mib[0] = CTL_KERN;
217	mib[1] = KERN_BOOTTIME;
218	len = sizeof btm;
219	if (sysctl(mib, 2, &btm, &len, 0, 0) < 0) {
220		syslog(LOG_ERR, "sysctl(kern.boottime): %m");
221		exit(1);
222	}
223
224	stats_all.s2.boottime.tv_sec = btm.tv_sec;
225	stats_all.s2.boottime.tv_usec = btm.tv_usec;
226
227
228#ifdef DEBUG
229	fprintf(stderr, "%d %d %d %d\n", stats_all.s1.cp_time[0],
230	    stats_all.s1.cp_time[1], stats_all.s1.cp_time[2], stats_all.s1.cp_time[3]);
231#endif
232
233#define	FETCH_CNT(stat, cnt) do {					\
234	len = sizeof((stat));						\
235	if (sysctlbyname("vm.stats." #cnt , &(stat), &len, 0, 0) < 0) { \
236		syslog(LOG_ERR, "sysctl(vm.stats." #cnt "): %m"); \
237		exit(1);						\
238	}								\
239} while (0)
240
241	FETCH_CNT(stats_all.s1.v_pgpgin, vm.v_vnodepgsin);
242	FETCH_CNT(stats_all.s1.v_pgpgout, vm.v_vnodepgsout);
243	FETCH_CNT(stats_all.s1.v_pswpin, vm.v_swappgsin);
244	FETCH_CNT(stats_all.s1.v_pswpout, vm.v_swappgsout);
245	FETCH_CNT(stats_all.s1.v_intr, sys.v_intr);
246	FETCH_CNT(stats_all.s2.v_swtch, sys.v_swtch);
247	(void)gettimeofday(&tm, NULL);
248	stats_all.s1.v_intr -= hz*(tm.tv_sec - btm.tv_sec) +
249	    hz*(tm.tv_usec - btm.tv_usec)/1000000;
250
251	/* update disk transfers */
252	updatexfers(RSTAT_DK_NDRIVE, stats_all.s1.dk_xfer);
253
254	mib[0] = CTL_NET;
255	mib[1] = PF_LINK;
256	mib[2] = NETLINK_GENERIC;
257	mib[3] = IFMIB_SYSTEM;
258	mib[4] = IFMIB_IFCOUNT;
259	len = sizeof ifcount;
260	if (sysctl(mib, 5, &ifcount, &len, 0, 0) < 0) {
261		syslog(LOG_ERR, "sysctl(net.link.generic.system.ifcount): %m");
262		exit(1);
263	}
264
265	stats_all.s1.if_ipackets = 0;
266	stats_all.s1.if_opackets = 0;
267	stats_all.s1.if_ierrors = 0;
268	stats_all.s1.if_oerrors = 0;
269	stats_all.s1.if_collisions = 0;
270	for (i = 1; i <= ifcount; i++) {
271		len = sizeof ifmd;
272		mib[3] = IFMIB_IFDATA;
273		mib[4] = i;
274		mib[5] = IFDATA_GENERAL;
275		if (sysctl(mib, 6, &ifmd, &len, 0, 0) < 0) {
276			if (errno == ENOENT)
277				continue;
278
279			syslog(LOG_ERR, "sysctl(net.link.ifdata.%d.general)"
280			       ": %m", i);
281			exit(1);
282		}
283
284		stats_all.s1.if_ipackets += ifmd.ifmd_data.ifi_ipackets;
285		stats_all.s1.if_opackets += ifmd.ifmd_data.ifi_opackets;
286		stats_all.s1.if_ierrors += ifmd.ifmd_data.ifi_ierrors;
287		stats_all.s1.if_oerrors += ifmd.ifmd_data.ifi_oerrors;
288		stats_all.s1.if_collisions += ifmd.ifmd_data.ifi_collisions;
289	}
290	(void)gettimeofday(&tm, NULL);
291	stats_all.s3.curtime.tv_sec = tm.tv_sec;
292	stats_all.s3.curtime.tv_usec = tm.tv_usec;
293	alarm(1);
294}
295
296/*
297 * returns true if have a disk
298 */
299int
300haveadisk(void)
301{
302	register int i;
303	struct statinfo stats;
304	int num_devices, retval = 0;
305
306	if ((num_devices = devstat_getnumdevs(NULL)) < 0) {
307		syslog(LOG_ERR, "rstatd: can't get number of devices: %s",
308		       devstat_errbuf);
309		exit(1);
310	}
311
312	if (devstat_checkversion(NULL) < 0) {
313		syslog(LOG_ERR, "rstatd: %s", devstat_errbuf);
314		exit(1);
315	}
316
317	stats.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo));
318	bzero(stats.dinfo, sizeof(struct devinfo));
319
320	if (devstat_getdevs(NULL, &stats) == -1) {
321		syslog(LOG_ERR, "rstatd: can't get device list: %s",
322		       devstat_errbuf);
323		exit(1);
324	}
325	for (i = 0; i < stats.dinfo->numdevs; i++) {
326		if (((stats.dinfo->devices[i].device_type
327		      & DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_DIRECT)
328		 && ((stats.dinfo->devices[i].device_type
329		      & DEVSTAT_TYPE_PASS) == 0)) {
330			retval = 1;
331			break;
332		}
333	}
334
335	if (stats.dinfo->mem_ptr)
336		free(stats.dinfo->mem_ptr);
337
338	free(stats.dinfo);
339	return(retval);
340}
341
342void
343updatexfers(int numdevs, int *devs)
344{
345	register int i, j, k, t;
346	struct statinfo stats;
347	int num_devices = 0;
348	u_int64_t total_transfers;
349
350	if ((num_devices = devstat_getnumdevs(NULL)) < 0) {
351		syslog(LOG_ERR, "rstatd: can't get number of devices: %s",
352		       devstat_errbuf);
353		exit(1);
354	}
355
356	if (devstat_checkversion(NULL) < 0) {
357		syslog(LOG_ERR, "rstatd: %s", devstat_errbuf);
358		exit(1);
359	}
360
361	stats.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo));
362	bzero(stats.dinfo, sizeof(struct devinfo));
363
364	if (devstat_getdevs(NULL, &stats) == -1) {
365		syslog(LOG_ERR, "rstatd: can't get device list: %s",
366		       devstat_errbuf);
367		exit(1);
368	}
369
370	for (i = 0, j = 0; i < stats.dinfo->numdevs && j < numdevs; i++) {
371		if (((stats.dinfo->devices[i].device_type
372		      & DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_DIRECT)
373		 && ((stats.dinfo->devices[i].device_type
374		      & DEVSTAT_TYPE_PASS) == 0)) {
375			total_transfers = 0;
376			for (k = 0; k < DEVSTAT_N_TRANS_FLAGS; k++)
377				total_transfers +=
378				    stats.dinfo->devices[i].operations[k];
379			/*
380			 * XXX KDM If the total transfers for this device
381			 * are greater than the amount we can fit in a
382			 * signed integer, just set them to the maximum
383			 * amount we can fit in a signed integer.  I have a
384			 * feeling that the rstat protocol assumes 32-bit
385			 * integers, so this could well break on a 64-bit
386			 * architecture like the Alpha.
387			 */
388			if (total_transfers > INT_MAX)
389				t = INT_MAX;
390			else
391				t = total_transfers;
392			devs[j] = t;
393			j++;
394		}
395	}
396
397	if (stats.dinfo->mem_ptr)
398		free(stats.dinfo->mem_ptr);
399
400	free(stats.dinfo);
401}
402
403void
404rstat_service(struct svc_req *rqstp, SVCXPRT *transp)
405{
406	union {
407		int fill;
408	} argument;
409	char *result;
410	bool_t (*xdr_argument)(), (*xdr_result)();
411	char *(*local)();
412
413	switch (rqstp->rq_proc) {
414	case NULLPROC:
415		(void)svc_sendreply(transp, (xdrproc_t)xdr_void, NULL);
416		goto leave;
417
418	case RSTATPROC_STATS:
419		xdr_argument = xdr_void;
420		xdr_result = xdr_statstime;
421                switch (rqstp->rq_vers) {
422                case RSTATVERS_ORIG:
423                        local = (char *(*)()) rstatproc_stats_1_svc;
424                        break;
425                case RSTATVERS_SWTCH:
426                        local = (char *(*)()) rstatproc_stats_2_svc;
427                        break;
428                case RSTATVERS_TIME:
429                        local = (char *(*)()) rstatproc_stats_3_svc;
430                        break;
431                default:
432                        svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME);
433                        goto leave;
434                        /*NOTREACHED*/
435                }
436		break;
437
438	case RSTATPROC_HAVEDISK:
439		xdr_argument = xdr_void;
440		xdr_result = xdr_u_int;
441                switch (rqstp->rq_vers) {
442                case RSTATVERS_ORIG:
443                        local = (char *(*)()) rstatproc_havedisk_1_svc;
444                        break;
445                case RSTATVERS_SWTCH:
446                        local = (char *(*)()) rstatproc_havedisk_2_svc;
447                        break;
448                case RSTATVERS_TIME:
449                        local = (char *(*)()) rstatproc_havedisk_3_svc;
450                        break;
451                default:
452                        svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME);
453                        goto leave;
454                        /*NOTREACHED*/
455                }
456		break;
457
458	default:
459		svcerr_noproc(transp);
460		goto leave;
461	}
462	bzero((char *)&argument, sizeof(argument));
463	if (!svc_getargs(transp, (xdrproc_t)xdr_argument, &argument)) {
464		svcerr_decode(transp);
465		goto leave;
466	}
467	result = (*local)(&argument, rqstp);
468	if (result != NULL &&
469	    !svc_sendreply(transp, (xdrproc_t)xdr_result, result)) {
470		svcerr_systemerr(transp);
471	}
472	if (!svc_freeargs(transp, (xdrproc_t)xdr_argument, &argument))
473		errx(1, "unable to free arguments");
474leave:
475        if (from_inetd)
476                exit(0);
477}
478