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 /*
31 * rstat service: built with rstat.x and derived from rpc.rstatd.c
32 *
33 * Copyright (c) 1984 by Sun Microsystems, Inc.
34 */
35
36 #include <sys/types.h>
37 #include <sys/socket.h>
38 #include <sys/sysctl.h>
39 #include <sys/time.h>
40 #include <sys/resource.h>
41 #include <sys/param.h>
42
43 #include <err.h>
44 #include <errno.h>
45 #include <fcntl.h>
46 #include <limits.h>
47 #include <signal.h>
48 #include <stdio.h>
49 #include <stdlib.h>
50 #include <string.h>
51 #include <syslog.h>
52 #include <unistd.h>
53 #include <devstat.h>
54
55 #include <net/if.h>
56 #include <net/if_mib.h>
57
58 #undef FSHIFT /* Use protocol's shift and scale values */
59 #undef FSCALE
60 #undef if_ipackets
61 #undef if_ierrors
62 #undef if_opackets
63 #undef if_oerrors
64 #undef if_collisions
65 #include <rpcsvc/rstat.h>
66
67 int haveadisk(void);
68 void updatexfers(int, int *);
69 int stats_service(void);
70
71 extern int from_inetd;
72 int sincelastreq = 0; /* number of alarms since last request */
73 extern int closedown;
74
75 union {
76 struct stats s1;
77 struct statsswtch s2;
78 struct statstime s3;
79 } stats_all;
80
81 void updatestat();
82 static int stat_is_init = 0;
83
84 static int cp_time_xlat[RSTAT_CPUSTATES] = { CP_USER, CP_NICE, CP_SYS,
85 CP_IDLE };
86 static long bsd_cp_time[CPUSTATES];
87
88
89 #ifndef FSCALE
90 #define FSCALE (1 << 8)
91 #endif
92
93 void
stat_init(void)94 stat_init(void)
95 {
96 stat_is_init = 1;
97 alarm(0);
98 updatestat();
99 (void) signal(SIGALRM, updatestat);
100 alarm(1);
101 }
102
103 statstime *
rstatproc_stats_3_svc(void * argp,struct svc_req * rqstp)104 rstatproc_stats_3_svc(void *argp, struct svc_req *rqstp)
105 {
106 if (! stat_is_init)
107 stat_init();
108 sincelastreq = 0;
109 return(&stats_all.s3);
110 }
111
112 statsswtch *
rstatproc_stats_2_svc(void * argp,struct svc_req * rqstp)113 rstatproc_stats_2_svc(void *argp, struct svc_req *rqstp)
114 {
115 if (! stat_is_init)
116 stat_init();
117 sincelastreq = 0;
118 return(&stats_all.s2);
119 }
120
121 stats *
rstatproc_stats_1_svc(void * argp,struct svc_req * rqstp)122 rstatproc_stats_1_svc(void *argp, struct svc_req *rqstp)
123 {
124 if (! stat_is_init)
125 stat_init();
126 sincelastreq = 0;
127 return(&stats_all.s1);
128 }
129
130 u_int *
rstatproc_havedisk_3_svc(void * argp,struct svc_req * rqstp)131 rstatproc_havedisk_3_svc(void *argp, struct svc_req *rqstp)
132 {
133 static u_int have;
134
135 if (! stat_is_init)
136 stat_init();
137 sincelastreq = 0;
138 have = haveadisk();
139 return(&have);
140 }
141
142 u_int *
rstatproc_havedisk_2_svc(void * argp,struct svc_req * rqstp)143 rstatproc_havedisk_2_svc(void *argp, struct svc_req *rqstp)
144 {
145 return(rstatproc_havedisk_3_svc(argp, rqstp));
146 }
147
148 u_int *
rstatproc_havedisk_1_svc(void * argp,struct svc_req * rqstp)149 rstatproc_havedisk_1_svc(void *argp, struct svc_req *rqstp)
150 {
151 return(rstatproc_havedisk_3_svc(argp, rqstp));
152 }
153
154 void
updatestat(void)155 updatestat(void)
156 {
157 int i, hz;
158 struct clockinfo clockrate;
159 struct ifmibdata ifmd;
160 double avrun[3];
161 struct timeval tm, btm;
162 int mib[6];
163 size_t len;
164 uint64_t val;
165 int ifcount;
166
167 #ifdef DEBUG
168 fprintf(stderr, "entering updatestat\n");
169 #endif
170 if (sincelastreq >= closedown) {
171 #ifdef DEBUG
172 fprintf(stderr, "about to closedown\n");
173 #endif
174 if (from_inetd)
175 exit(0);
176 else {
177 stat_is_init = 0;
178 return;
179 }
180 }
181 sincelastreq++;
182
183 mib[0] = CTL_KERN;
184 mib[1] = KERN_CLOCKRATE;
185 len = sizeof clockrate;
186 if (sysctl(mib, 2, &clockrate, &len, 0, 0) < 0) {
187 syslog(LOG_ERR, "sysctl(kern.clockrate): %m");
188 exit(1);
189 }
190 hz = clockrate.hz;
191
192 len = sizeof(bsd_cp_time);
193 if (sysctlbyname("kern.cp_time", bsd_cp_time, &len, 0, 0) < 0) {
194 syslog(LOG_ERR, "sysctl(kern.cp_time): %m");
195 exit(1);
196 }
197 for(i = 0; i < RSTAT_CPUSTATES ; i++)
198 stats_all.s1.cp_time[i] = bsd_cp_time[cp_time_xlat[i]];
199
200 (void)getloadavg(avrun, sizeof(avrun) / sizeof(avrun[0]));
201
202 stats_all.s2.avenrun[0] = avrun[0] * FSCALE;
203 stats_all.s2.avenrun[1] = avrun[1] * FSCALE;
204 stats_all.s2.avenrun[2] = avrun[2] * FSCALE;
205
206 mib[0] = CTL_KERN;
207 mib[1] = KERN_BOOTTIME;
208 len = sizeof btm;
209 if (sysctl(mib, 2, &btm, &len, 0, 0) < 0) {
210 syslog(LOG_ERR, "sysctl(kern.boottime): %m");
211 exit(1);
212 }
213
214 stats_all.s2.boottime.tv_sec = btm.tv_sec;
215 stats_all.s2.boottime.tv_usec = btm.tv_usec;
216
217
218 #ifdef DEBUG
219 fprintf(stderr, "%d %d %d %d\n", stats_all.s1.cp_time[0],
220 stats_all.s1.cp_time[1], stats_all.s1.cp_time[2], stats_all.s1.cp_time[3]);
221 #endif
222
223 #define FETCH_CNT(stat, cnt) do { \
224 len = sizeof(uint64_t); \
225 if (sysctlbyname("vm.stats." #cnt , &val, &len, NULL, 0) < 0) { \
226 syslog(LOG_ERR, "sysctl(vm.stats." #cnt "): %m"); \
227 exit(1); \
228 } \
229 stat = val; \
230 } while (0)
231
232 FETCH_CNT(stats_all.s1.v_pgpgin, vm.v_vnodepgsin);
233 FETCH_CNT(stats_all.s1.v_pgpgout, vm.v_vnodepgsout);
234 FETCH_CNT(stats_all.s1.v_pswpin, vm.v_swappgsin);
235 FETCH_CNT(stats_all.s1.v_pswpout, vm.v_swappgsout);
236 FETCH_CNT(stats_all.s1.v_intr, sys.v_intr);
237 FETCH_CNT(stats_all.s2.v_swtch, sys.v_swtch);
238 (void)gettimeofday(&tm, NULL);
239 stats_all.s1.v_intr -= hz*(tm.tv_sec - btm.tv_sec) +
240 hz*(tm.tv_usec - btm.tv_usec)/1000000;
241
242 /* update disk transfers */
243 updatexfers(RSTAT_DK_NDRIVE, stats_all.s1.dk_xfer);
244
245 mib[0] = CTL_NET;
246 mib[1] = PF_LINK;
247 mib[2] = NETLINK_GENERIC;
248 mib[3] = IFMIB_SYSTEM;
249 mib[4] = IFMIB_IFCOUNT;
250 len = sizeof ifcount;
251 if (sysctl(mib, 5, &ifcount, &len, 0, 0) < 0) {
252 syslog(LOG_ERR, "sysctl(net.link.generic.system.ifcount): %m");
253 exit(1);
254 }
255
256 stats_all.s1.if_ipackets = 0;
257 stats_all.s1.if_opackets = 0;
258 stats_all.s1.if_ierrors = 0;
259 stats_all.s1.if_oerrors = 0;
260 stats_all.s1.if_collisions = 0;
261 for (i = 1; i <= ifcount; i++) {
262 len = sizeof ifmd;
263 mib[3] = IFMIB_IFDATA;
264 mib[4] = i;
265 mib[5] = IFDATA_GENERAL;
266 if (sysctl(mib, 6, &ifmd, &len, 0, 0) < 0) {
267 if (errno == ENOENT)
268 continue;
269
270 syslog(LOG_ERR, "sysctl(net.link.ifdata.%d.general)"
271 ": %m", i);
272 exit(1);
273 }
274
275 stats_all.s1.if_ipackets += ifmd.ifmd_data.ifi_ipackets;
276 stats_all.s1.if_opackets += ifmd.ifmd_data.ifi_opackets;
277 stats_all.s1.if_ierrors += ifmd.ifmd_data.ifi_ierrors;
278 stats_all.s1.if_oerrors += ifmd.ifmd_data.ifi_oerrors;
279 stats_all.s1.if_collisions += ifmd.ifmd_data.ifi_collisions;
280 }
281 (void)gettimeofday(&tm, NULL);
282 stats_all.s3.curtime.tv_sec = tm.tv_sec;
283 stats_all.s3.curtime.tv_usec = tm.tv_usec;
284 alarm(1);
285 }
286
287 /*
288 * returns true if have a disk
289 */
290 int
haveadisk(void)291 haveadisk(void)
292 {
293 register int i;
294 struct statinfo stats;
295 int num_devices, retval = 0;
296
297 if ((num_devices = devstat_getnumdevs(NULL)) < 0) {
298 syslog(LOG_ERR, "rstatd: can't get number of devices: %s",
299 devstat_errbuf);
300 exit(1);
301 }
302
303 if (devstat_checkversion(NULL) < 0) {
304 syslog(LOG_ERR, "rstatd: %s", devstat_errbuf);
305 exit(1);
306 }
307
308 stats.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo));
309 bzero(stats.dinfo, sizeof(struct devinfo));
310
311 if (devstat_getdevs(NULL, &stats) == -1) {
312 syslog(LOG_ERR, "rstatd: can't get device list: %s",
313 devstat_errbuf);
314 exit(1);
315 }
316 for (i = 0; i < stats.dinfo->numdevs; i++) {
317 if (((stats.dinfo->devices[i].device_type
318 & DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_DIRECT)
319 && ((stats.dinfo->devices[i].device_type
320 & DEVSTAT_TYPE_PASS) == 0)) {
321 retval = 1;
322 break;
323 }
324 }
325
326 if (stats.dinfo->mem_ptr)
327 free(stats.dinfo->mem_ptr);
328
329 free(stats.dinfo);
330 return(retval);
331 }
332
333 void
updatexfers(int numdevs,int * devs)334 updatexfers(int numdevs, int *devs)
335 {
336 register int i, j, k, t;
337 struct statinfo stats;
338 int num_devices = 0;
339 u_int64_t total_transfers;
340
341 if ((num_devices = devstat_getnumdevs(NULL)) < 0) {
342 syslog(LOG_ERR, "rstatd: can't get number of devices: %s",
343 devstat_errbuf);
344 exit(1);
345 }
346
347 if (devstat_checkversion(NULL) < 0) {
348 syslog(LOG_ERR, "rstatd: %s", devstat_errbuf);
349 exit(1);
350 }
351
352 stats.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo));
353 bzero(stats.dinfo, sizeof(struct devinfo));
354
355 if (devstat_getdevs(NULL, &stats) == -1) {
356 syslog(LOG_ERR, "rstatd: can't get device list: %s",
357 devstat_errbuf);
358 exit(1);
359 }
360
361 for (i = 0, j = 0; i < stats.dinfo->numdevs && j < numdevs; i++) {
362 if (((stats.dinfo->devices[i].device_type
363 & DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_DIRECT)
364 && ((stats.dinfo->devices[i].device_type
365 & DEVSTAT_TYPE_PASS) == 0)) {
366 total_transfers = 0;
367 for (k = 0; k < DEVSTAT_N_TRANS_FLAGS; k++)
368 total_transfers +=
369 stats.dinfo->devices[i].operations[k];
370 /*
371 * XXX KDM If the total transfers for this device
372 * are greater than the amount we can fit in a
373 * signed integer, just set them to the maximum
374 * amount we can fit in a signed integer. I have a
375 * feeling that the rstat protocol assumes 32-bit
376 * integers, so this could well break on a 64-bit
377 * architecture like the Alpha.
378 */
379 if (total_transfers > INT_MAX)
380 t = INT_MAX;
381 else
382 t = total_transfers;
383 devs[j] = t;
384 j++;
385 }
386 }
387
388 if (stats.dinfo->mem_ptr)
389 free(stats.dinfo->mem_ptr);
390
391 free(stats.dinfo);
392 }
393
394 void
rstat_service(struct svc_req * rqstp,SVCXPRT * transp)395 rstat_service(struct svc_req *rqstp, SVCXPRT *transp)
396 {
397 union {
398 int fill;
399 } argument;
400 void *result;
401 xdrproc_t xdr_argument, xdr_result;
402 typedef void *(svc_cb)(void *arg, struct svc_req *rqstp);
403 svc_cb *local;
404
405 switch (rqstp->rq_proc) {
406 case NULLPROC:
407 (void)svc_sendreply(transp, (xdrproc_t)xdr_void, NULL);
408 goto leave;
409
410 case RSTATPROC_STATS:
411 xdr_argument = (xdrproc_t)xdr_void;
412 xdr_result = (xdrproc_t)xdr_statstime;
413 switch (rqstp->rq_vers) {
414 case RSTATVERS_ORIG:
415 local = (svc_cb *)rstatproc_stats_1_svc;
416 break;
417 case RSTATVERS_SWTCH:
418 local = (svc_cb *)rstatproc_stats_2_svc;
419 break;
420 case RSTATVERS_TIME:
421 local = (svc_cb *)rstatproc_stats_3_svc;
422 break;
423 default:
424 svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME);
425 goto leave;
426 /*NOTREACHED*/
427 }
428 break;
429
430 case RSTATPROC_HAVEDISK:
431 xdr_argument = (xdrproc_t)xdr_void;
432 xdr_result = (xdrproc_t)xdr_u_int;
433 switch (rqstp->rq_vers) {
434 case RSTATVERS_ORIG:
435 local = (svc_cb *)rstatproc_havedisk_1_svc;
436 break;
437 case RSTATVERS_SWTCH:
438 local = (svc_cb *)rstatproc_havedisk_2_svc;
439 break;
440 case RSTATVERS_TIME:
441 local = (svc_cb *)rstatproc_havedisk_3_svc;
442 break;
443 default:
444 svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME);
445 goto leave;
446 /*NOTREACHED*/
447 }
448 break;
449
450 default:
451 svcerr_noproc(transp);
452 goto leave;
453 }
454 bzero((char *)&argument, sizeof(argument));
455 if (!svc_getargs(transp, xdr_argument, &argument)) {
456 svcerr_decode(transp);
457 goto leave;
458 }
459 result = (*local)(&argument, rqstp);
460 if (result != NULL &&
461 !svc_sendreply(transp, xdr_result, result)) {
462 svcerr_systemerr(transp);
463 }
464 if (!svc_freeargs(transp, xdr_argument, &argument))
465 errx(1, "unable to free arguments");
466 leave:
467 if (from_inetd)
468 exit(0);
469 }
470