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
32 static char sccsid[] = "from: @(#)rpc.rstatd.c 1.1 86/09/25 Copyr 1984 Sun Micro";
33 static char sccsid[] = "from: @(#)rstat_proc.c 2.2 88/08/01 4.0 RPCSRC";
34 #endif
35 static 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
77 int haveadisk(void);
78 void updatexfers(int, int *);
79 int stats_service(void);
80
81 extern int from_inetd;
82 int sincelastreq = 0; /* number of alarms since last request */
83 extern int closedown;
84
85 union {
86 struct stats s1;
87 struct statsswtch s2;
88 struct statstime s3;
89 } stats_all;
90
91 void updatestat();
92 static int stat_is_init = 0;
93
94 static int cp_time_xlat[RSTAT_CPUSTATES] = { CP_USER, CP_NICE, CP_SYS,
95 CP_IDLE };
96 static long bsd_cp_time[CPUSTATES];
97
98
99 #ifndef FSCALE
100 #define FSCALE (1 << 8)
101 #endif
102
103 void
stat_init(void)104 stat_init(void)
105 {
106 stat_is_init = 1;
107 alarm(0);
108 updatestat();
109 (void) signal(SIGALRM, updatestat);
110 alarm(1);
111 }
112
113 statstime *
rstatproc_stats_3_svc(void * argp,struct svc_req * rqstp)114 rstatproc_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
122 statsswtch *
rstatproc_stats_2_svc(void * argp,struct svc_req * rqstp)123 rstatproc_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
131 stats *
rstatproc_stats_1_svc(void * argp,struct svc_req * rqstp)132 rstatproc_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
140 u_int *
rstatproc_havedisk_3_svc(void * argp,struct svc_req * rqstp)141 rstatproc_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
152 u_int *
rstatproc_havedisk_2_svc(void * argp,struct svc_req * rqstp)153 rstatproc_havedisk_2_svc(void *argp, struct svc_req *rqstp)
154 {
155 return(rstatproc_havedisk_3_svc(argp, rqstp));
156 }
157
158 u_int *
rstatproc_havedisk_1_svc(void * argp,struct svc_req * rqstp)159 rstatproc_havedisk_1_svc(void *argp, struct svc_req *rqstp)
160 {
161 return(rstatproc_havedisk_3_svc(argp, rqstp));
162 }
163
164 void
updatestat(void)165 updatestat(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 */
299 int
haveadisk(void)300 haveadisk(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
342 void
updatexfers(int numdevs,int * devs)343 updatexfers(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
403 void
rstat_service(struct svc_req * rqstp,SVCXPRT * transp)404 rstat_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");
474 leave:
475 if (from_inetd)
476 exit(0);
477 }
478