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 #endif
36
37 /*
38 * rstat service: built with rstat.x and derived from rpc.rstatd.c
39 *
40 * Copyright (c) 1984 by Sun Microsystems, Inc.
41 */
42
43 #include <sys/types.h>
44 #include <sys/socket.h>
45 #include <sys/sysctl.h>
46 #include <sys/time.h>
47 #include <sys/resource.h>
48 #include <sys/param.h>
49
50 #include <err.h>
51 #include <errno.h>
52 #include <fcntl.h>
53 #include <limits.h>
54 #include <signal.h>
55 #include <stdio.h>
56 #include <stdlib.h>
57 #include <string.h>
58 #include <syslog.h>
59 #include <unistd.h>
60 #include <devstat.h>
61
62 #include <net/if.h>
63 #include <net/if_mib.h>
64
65 #undef FSHIFT /* Use protocol's shift and scale values */
66 #undef FSCALE
67 #undef if_ipackets
68 #undef if_ierrors
69 #undef if_opackets
70 #undef if_oerrors
71 #undef if_collisions
72 #include <rpcsvc/rstat.h>
73
74 int haveadisk(void);
75 void updatexfers(int, int *);
76 int stats_service(void);
77
78 extern int from_inetd;
79 int sincelastreq = 0; /* number of alarms since last request */
80 extern int closedown;
81
82 union {
83 struct stats s1;
84 struct statsswtch s2;
85 struct statstime s3;
86 } stats_all;
87
88 void updatestat();
89 static int stat_is_init = 0;
90
91 static int cp_time_xlat[RSTAT_CPUSTATES] = { CP_USER, CP_NICE, CP_SYS,
92 CP_IDLE };
93 static long bsd_cp_time[CPUSTATES];
94
95
96 #ifndef FSCALE
97 #define FSCALE (1 << 8)
98 #endif
99
100 void
stat_init(void)101 stat_init(void)
102 {
103 stat_is_init = 1;
104 alarm(0);
105 updatestat();
106 (void) signal(SIGALRM, updatestat);
107 alarm(1);
108 }
109
110 statstime *
rstatproc_stats_3_svc(void * argp,struct svc_req * rqstp)111 rstatproc_stats_3_svc(void *argp, struct svc_req *rqstp)
112 {
113 if (! stat_is_init)
114 stat_init();
115 sincelastreq = 0;
116 return(&stats_all.s3);
117 }
118
119 statsswtch *
rstatproc_stats_2_svc(void * argp,struct svc_req * rqstp)120 rstatproc_stats_2_svc(void *argp, struct svc_req *rqstp)
121 {
122 if (! stat_is_init)
123 stat_init();
124 sincelastreq = 0;
125 return(&stats_all.s2);
126 }
127
128 stats *
rstatproc_stats_1_svc(void * argp,struct svc_req * rqstp)129 rstatproc_stats_1_svc(void *argp, struct svc_req *rqstp)
130 {
131 if (! stat_is_init)
132 stat_init();
133 sincelastreq = 0;
134 return(&stats_all.s1);
135 }
136
137 u_int *
rstatproc_havedisk_3_svc(void * argp,struct svc_req * rqstp)138 rstatproc_havedisk_3_svc(void *argp, struct svc_req *rqstp)
139 {
140 static u_int have;
141
142 if (! stat_is_init)
143 stat_init();
144 sincelastreq = 0;
145 have = haveadisk();
146 return(&have);
147 }
148
149 u_int *
rstatproc_havedisk_2_svc(void * argp,struct svc_req * rqstp)150 rstatproc_havedisk_2_svc(void *argp, struct svc_req *rqstp)
151 {
152 return(rstatproc_havedisk_3_svc(argp, rqstp));
153 }
154
155 u_int *
rstatproc_havedisk_1_svc(void * argp,struct svc_req * rqstp)156 rstatproc_havedisk_1_svc(void *argp, struct svc_req *rqstp)
157 {
158 return(rstatproc_havedisk_3_svc(argp, rqstp));
159 }
160
161 void
updatestat(void)162 updatestat(void)
163 {
164 int i, hz;
165 struct clockinfo clockrate;
166 struct ifmibdata ifmd;
167 double avrun[3];
168 struct timeval tm, btm;
169 int mib[6];
170 size_t len;
171 uint64_t val;
172 int ifcount;
173
174 #ifdef DEBUG
175 fprintf(stderr, "entering updatestat\n");
176 #endif
177 if (sincelastreq >= closedown) {
178 #ifdef DEBUG
179 fprintf(stderr, "about to closedown\n");
180 #endif
181 if (from_inetd)
182 exit(0);
183 else {
184 stat_is_init = 0;
185 return;
186 }
187 }
188 sincelastreq++;
189
190 mib[0] = CTL_KERN;
191 mib[1] = KERN_CLOCKRATE;
192 len = sizeof clockrate;
193 if (sysctl(mib, 2, &clockrate, &len, 0, 0) < 0) {
194 syslog(LOG_ERR, "sysctl(kern.clockrate): %m");
195 exit(1);
196 }
197 hz = clockrate.hz;
198
199 len = sizeof(bsd_cp_time);
200 if (sysctlbyname("kern.cp_time", bsd_cp_time, &len, 0, 0) < 0) {
201 syslog(LOG_ERR, "sysctl(kern.cp_time): %m");
202 exit(1);
203 }
204 for(i = 0; i < RSTAT_CPUSTATES ; i++)
205 stats_all.s1.cp_time[i] = bsd_cp_time[cp_time_xlat[i]];
206
207 (void)getloadavg(avrun, sizeof(avrun) / sizeof(avrun[0]));
208
209 stats_all.s2.avenrun[0] = avrun[0] * FSCALE;
210 stats_all.s2.avenrun[1] = avrun[1] * FSCALE;
211 stats_all.s2.avenrun[2] = avrun[2] * FSCALE;
212
213 mib[0] = CTL_KERN;
214 mib[1] = KERN_BOOTTIME;
215 len = sizeof btm;
216 if (sysctl(mib, 2, &btm, &len, 0, 0) < 0) {
217 syslog(LOG_ERR, "sysctl(kern.boottime): %m");
218 exit(1);
219 }
220
221 stats_all.s2.boottime.tv_sec = btm.tv_sec;
222 stats_all.s2.boottime.tv_usec = btm.tv_usec;
223
224
225 #ifdef DEBUG
226 fprintf(stderr, "%d %d %d %d\n", stats_all.s1.cp_time[0],
227 stats_all.s1.cp_time[1], stats_all.s1.cp_time[2], stats_all.s1.cp_time[3]);
228 #endif
229
230 #define FETCH_CNT(stat, cnt) do { \
231 len = sizeof(uint64_t); \
232 if (sysctlbyname("vm.stats." #cnt , &val, &len, NULL, 0) < 0) { \
233 syslog(LOG_ERR, "sysctl(vm.stats." #cnt "): %m"); \
234 exit(1); \
235 } \
236 stat = val; \
237 } while (0)
238
239 FETCH_CNT(stats_all.s1.v_pgpgin, vm.v_vnodepgsin);
240 FETCH_CNT(stats_all.s1.v_pgpgout, vm.v_vnodepgsout);
241 FETCH_CNT(stats_all.s1.v_pswpin, vm.v_swappgsin);
242 FETCH_CNT(stats_all.s1.v_pswpout, vm.v_swappgsout);
243 FETCH_CNT(stats_all.s1.v_intr, sys.v_intr);
244 FETCH_CNT(stats_all.s2.v_swtch, sys.v_swtch);
245 (void)gettimeofday(&tm, NULL);
246 stats_all.s1.v_intr -= hz*(tm.tv_sec - btm.tv_sec) +
247 hz*(tm.tv_usec - btm.tv_usec)/1000000;
248
249 /* update disk transfers */
250 updatexfers(RSTAT_DK_NDRIVE, stats_all.s1.dk_xfer);
251
252 mib[0] = CTL_NET;
253 mib[1] = PF_LINK;
254 mib[2] = NETLINK_GENERIC;
255 mib[3] = IFMIB_SYSTEM;
256 mib[4] = IFMIB_IFCOUNT;
257 len = sizeof ifcount;
258 if (sysctl(mib, 5, &ifcount, &len, 0, 0) < 0) {
259 syslog(LOG_ERR, "sysctl(net.link.generic.system.ifcount): %m");
260 exit(1);
261 }
262
263 stats_all.s1.if_ipackets = 0;
264 stats_all.s1.if_opackets = 0;
265 stats_all.s1.if_ierrors = 0;
266 stats_all.s1.if_oerrors = 0;
267 stats_all.s1.if_collisions = 0;
268 for (i = 1; i <= ifcount; i++) {
269 len = sizeof ifmd;
270 mib[3] = IFMIB_IFDATA;
271 mib[4] = i;
272 mib[5] = IFDATA_GENERAL;
273 if (sysctl(mib, 6, &ifmd, &len, 0, 0) < 0) {
274 if (errno == ENOENT)
275 continue;
276
277 syslog(LOG_ERR, "sysctl(net.link.ifdata.%d.general)"
278 ": %m", i);
279 exit(1);
280 }
281
282 stats_all.s1.if_ipackets += ifmd.ifmd_data.ifi_ipackets;
283 stats_all.s1.if_opackets += ifmd.ifmd_data.ifi_opackets;
284 stats_all.s1.if_ierrors += ifmd.ifmd_data.ifi_ierrors;
285 stats_all.s1.if_oerrors += ifmd.ifmd_data.ifi_oerrors;
286 stats_all.s1.if_collisions += ifmd.ifmd_data.ifi_collisions;
287 }
288 (void)gettimeofday(&tm, NULL);
289 stats_all.s3.curtime.tv_sec = tm.tv_sec;
290 stats_all.s3.curtime.tv_usec = tm.tv_usec;
291 alarm(1);
292 }
293
294 /*
295 * returns true if have a disk
296 */
297 int
haveadisk(void)298 haveadisk(void)
299 {
300 register int i;
301 struct statinfo stats;
302 int num_devices, retval = 0;
303
304 if ((num_devices = devstat_getnumdevs(NULL)) < 0) {
305 syslog(LOG_ERR, "rstatd: can't get number of devices: %s",
306 devstat_errbuf);
307 exit(1);
308 }
309
310 if (devstat_checkversion(NULL) < 0) {
311 syslog(LOG_ERR, "rstatd: %s", devstat_errbuf);
312 exit(1);
313 }
314
315 stats.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo));
316 bzero(stats.dinfo, sizeof(struct devinfo));
317
318 if (devstat_getdevs(NULL, &stats) == -1) {
319 syslog(LOG_ERR, "rstatd: can't get device list: %s",
320 devstat_errbuf);
321 exit(1);
322 }
323 for (i = 0; i < stats.dinfo->numdevs; i++) {
324 if (((stats.dinfo->devices[i].device_type
325 & DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_DIRECT)
326 && ((stats.dinfo->devices[i].device_type
327 & DEVSTAT_TYPE_PASS) == 0)) {
328 retval = 1;
329 break;
330 }
331 }
332
333 if (stats.dinfo->mem_ptr)
334 free(stats.dinfo->mem_ptr);
335
336 free(stats.dinfo);
337 return(retval);
338 }
339
340 void
updatexfers(int numdevs,int * devs)341 updatexfers(int numdevs, int *devs)
342 {
343 register int i, j, k, t;
344 struct statinfo stats;
345 int num_devices = 0;
346 u_int64_t total_transfers;
347
348 if ((num_devices = devstat_getnumdevs(NULL)) < 0) {
349 syslog(LOG_ERR, "rstatd: can't get number of devices: %s",
350 devstat_errbuf);
351 exit(1);
352 }
353
354 if (devstat_checkversion(NULL) < 0) {
355 syslog(LOG_ERR, "rstatd: %s", devstat_errbuf);
356 exit(1);
357 }
358
359 stats.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo));
360 bzero(stats.dinfo, sizeof(struct devinfo));
361
362 if (devstat_getdevs(NULL, &stats) == -1) {
363 syslog(LOG_ERR, "rstatd: can't get device list: %s",
364 devstat_errbuf);
365 exit(1);
366 }
367
368 for (i = 0, j = 0; i < stats.dinfo->numdevs && j < numdevs; i++) {
369 if (((stats.dinfo->devices[i].device_type
370 & DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_DIRECT)
371 && ((stats.dinfo->devices[i].device_type
372 & DEVSTAT_TYPE_PASS) == 0)) {
373 total_transfers = 0;
374 for (k = 0; k < DEVSTAT_N_TRANS_FLAGS; k++)
375 total_transfers +=
376 stats.dinfo->devices[i].operations[k];
377 /*
378 * XXX KDM If the total transfers for this device
379 * are greater than the amount we can fit in a
380 * signed integer, just set them to the maximum
381 * amount we can fit in a signed integer. I have a
382 * feeling that the rstat protocol assumes 32-bit
383 * integers, so this could well break on a 64-bit
384 * architecture like the Alpha.
385 */
386 if (total_transfers > INT_MAX)
387 t = INT_MAX;
388 else
389 t = total_transfers;
390 devs[j] = t;
391 j++;
392 }
393 }
394
395 if (stats.dinfo->mem_ptr)
396 free(stats.dinfo->mem_ptr);
397
398 free(stats.dinfo);
399 }
400
401 void
rstat_service(struct svc_req * rqstp,SVCXPRT * transp)402 rstat_service(struct svc_req *rqstp, SVCXPRT *transp)
403 {
404 union {
405 int fill;
406 } argument;
407 void *result;
408 xdrproc_t xdr_argument, xdr_result;
409 typedef void *(svc_cb)(void *arg, struct svc_req *rqstp);
410 svc_cb *local;
411
412 switch (rqstp->rq_proc) {
413 case NULLPROC:
414 (void)svc_sendreply(transp, (xdrproc_t)xdr_void, NULL);
415 goto leave;
416
417 case RSTATPROC_STATS:
418 xdr_argument = (xdrproc_t)xdr_void;
419 xdr_result = (xdrproc_t)xdr_statstime;
420 switch (rqstp->rq_vers) {
421 case RSTATVERS_ORIG:
422 local = (svc_cb *)rstatproc_stats_1_svc;
423 break;
424 case RSTATVERS_SWTCH:
425 local = (svc_cb *)rstatproc_stats_2_svc;
426 break;
427 case RSTATVERS_TIME:
428 local = (svc_cb *)rstatproc_stats_3_svc;
429 break;
430 default:
431 svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME);
432 goto leave;
433 /*NOTREACHED*/
434 }
435 break;
436
437 case RSTATPROC_HAVEDISK:
438 xdr_argument = (xdrproc_t)xdr_void;
439 xdr_result = (xdrproc_t)xdr_u_int;
440 switch (rqstp->rq_vers) {
441 case RSTATVERS_ORIG:
442 local = (svc_cb *)rstatproc_havedisk_1_svc;
443 break;
444 case RSTATVERS_SWTCH:
445 local = (svc_cb *)rstatproc_havedisk_2_svc;
446 break;
447 case RSTATVERS_TIME:
448 local = (svc_cb *)rstatproc_havedisk_3_svc;
449 break;
450 default:
451 svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME);
452 goto leave;
453 /*NOTREACHED*/
454 }
455 break;
456
457 default:
458 svcerr_noproc(transp);
459 goto leave;
460 }
461 bzero((char *)&argument, sizeof(argument));
462 if (!svc_getargs(transp, xdr_argument, &argument)) {
463 svcerr_decode(transp);
464 goto leave;
465 }
466 result = (*local)(&argument, rqstp);
467 if (result != NULL &&
468 !svc_sendreply(transp, xdr_result, result)) {
469 svcerr_systemerr(transp);
470 }
471 if (!svc_freeargs(transp, xdr_argument, &argument))
472 errx(1, "unable to free arguments");
473 leave:
474 if (from_inetd)
475 exit(0);
476 }
477