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/dkstat.h> 47 #include <sys/socket.h> 48 #include <sys/sysctl.h> 49 #include <sys/time.h> 50 #include <sys/vmmeter.h> 51 #include <sys/param.h> 52 53 #include <err.h> 54 #include <fcntl.h> 55 #include <kvm.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 struct nlist nl[] = { 78 #define X_CPTIME 0 79 { "_cp_time" }, 80 #define X_CNT 1 81 { "_cnt" }, 82 { "" }, 83 }; 84 85 int havedisk __P((void)); 86 void updatexfers __P((int, int *)); 87 void setup __P((void)); 88 int stats_service(); 89 90 extern int from_inetd; 91 int sincelastreq = 0; /* number of alarms since last request */ 92 extern int closedown; 93 94 union { 95 struct stats s1; 96 struct statsswtch s2; 97 struct statstime s3; 98 } stats_all; 99 100 void updatestat(); 101 static stat_is_init = 0; 102 static kvm_t *kd; 103 104 static int cp_time_xlat[RSTAT_CPUSTATES] = { CP_USER, CP_NICE, CP_SYS, 105 CP_IDLE }; 106 static long bsd_cp_time[CPUSTATES]; 107 108 109 #ifndef FSCALE 110 #define FSCALE (1 << 8) 111 #endif 112 113 void 114 stat_init() 115 { 116 stat_is_init = 1; 117 setup(); 118 alarm(0); 119 updatestat(); 120 (void) signal(SIGALRM, updatestat); 121 alarm(1); 122 } 123 124 statstime * 125 rstatproc_stats_3_svc(argp, rqstp) 126 void *argp; 127 struct svc_req *rqstp; 128 { 129 if (! stat_is_init) 130 stat_init(); 131 sincelastreq = 0; 132 return(&stats_all.s3); 133 } 134 135 statsswtch * 136 rstatproc_stats_2_svc(argp, rqstp) 137 void *argp; 138 struct svc_req *rqstp; 139 { 140 if (! stat_is_init) 141 stat_init(); 142 sincelastreq = 0; 143 return(&stats_all.s2); 144 } 145 146 stats * 147 rstatproc_stats_1_svc(argp, rqstp) 148 void *argp; 149 struct svc_req *rqstp; 150 { 151 if (! stat_is_init) 152 stat_init(); 153 sincelastreq = 0; 154 return(&stats_all.s1); 155 } 156 157 u_int * 158 rstatproc_havedisk_3_svc(argp, rqstp) 159 void *argp; 160 struct svc_req *rqstp; 161 { 162 static u_int have; 163 164 if (! stat_is_init) 165 stat_init(); 166 sincelastreq = 0; 167 have = havedisk(); 168 return(&have); 169 } 170 171 u_int * 172 rstatproc_havedisk_2_svc(argp, rqstp) 173 void *argp; 174 struct svc_req *rqstp; 175 { 176 return(rstatproc_havedisk_3_svc(argp, rqstp)); 177 } 178 179 u_int * 180 rstatproc_havedisk_1_svc(argp, rqstp) 181 void *argp; 182 struct svc_req *rqstp; 183 { 184 return(rstatproc_havedisk_3_svc(argp, rqstp)); 185 } 186 187 void 188 updatestat() 189 { 190 int i, hz; 191 struct clockinfo clockrate; 192 struct vmmeter cnt; 193 struct ifmibdata ifmd; 194 double avrun[3]; 195 struct timeval tm, btm; 196 int mib[6]; 197 size_t len; 198 int ifcount; 199 200 #ifdef DEBUG 201 fprintf(stderr, "entering updatestat\n"); 202 #endif 203 if (sincelastreq >= closedown) { 204 #ifdef DEBUG 205 fprintf(stderr, "about to closedown\n"); 206 #endif 207 kvm_close(kd); 208 if (from_inetd) 209 exit(0); 210 else { 211 stat_is_init = 0; 212 return; 213 } 214 } 215 sincelastreq++; 216 217 mib[0] = CTL_KERN; 218 mib[1] = KERN_CLOCKRATE; 219 len = sizeof clockrate; 220 if (sysctl(mib, 2, &clockrate, &len, 0, 0) < 0) { 221 syslog(LOG_ERR, "sysctl(kern.clockrate): %m"); 222 exit(1); 223 } 224 hz = clockrate.hz; 225 226 if (kvm_read(kd, (long)nl[X_CPTIME].n_value, (char *)bsd_cp_time, sizeof(bsd_cp_time)) 227 != sizeof(bsd_cp_time)) { 228 syslog(LOG_ERR, "rstat: can't read cp_time from kmem"); 229 exit(1); 230 } 231 for(i = 0; i < RSTAT_CPUSTATES ; i++) 232 stats_all.s1.cp_time[i] = bsd_cp_time[cp_time_xlat[i]]; 233 234 (void)getloadavg(avrun, sizeof(avrun) / sizeof(avrun[0])); 235 236 stats_all.s2.avenrun[0] = avrun[0] * FSCALE; 237 stats_all.s2.avenrun[1] = avrun[1] * FSCALE; 238 stats_all.s2.avenrun[2] = avrun[2] * FSCALE; 239 240 mib[0] = CTL_KERN; 241 mib[1] = KERN_BOOTTIME; 242 len = sizeof btm; 243 if (sysctl(mib, 2, &btm, &len, 0, 0) < 0) { 244 syslog(LOG_ERR, "sysctl(kern.boottime): %m"); 245 exit(1); 246 } 247 248 stats_all.s2.boottime.tv_sec = btm.tv_sec; 249 stats_all.s2.boottime.tv_usec = btm.tv_usec; 250 251 252 #ifdef DEBUG 253 fprintf(stderr, "%d %d %d %d\n", stats_all.s1.cp_time[0], 254 stats_all.s1.cp_time[1], stats_all.s1.cp_time[2], stats_all.s1.cp_time[3]); 255 #endif 256 257 /* XXX - should use sysctl */ 258 if (kvm_read(kd, (long)nl[X_CNT].n_value, (char *)&cnt, sizeof cnt) != sizeof cnt) { 259 syslog(LOG_ERR, "rstat: can't read cnt from kmem"); 260 exit(1); 261 } 262 stats_all.s1.v_pgpgin = cnt.v_vnodepgsin; 263 stats_all.s1.v_pgpgout = cnt.v_vnodepgsout; 264 stats_all.s1.v_pswpin = cnt.v_swappgsin; 265 stats_all.s1.v_pswpout = cnt.v_swappgsout; 266 stats_all.s1.v_intr = cnt.v_intr; 267 gettimeofday(&tm, (struct timezone *) 0); 268 stats_all.s1.v_intr -= hz*(tm.tv_sec - btm.tv_sec) + 269 hz*(tm.tv_usec - btm.tv_usec)/1000000; 270 stats_all.s2.v_swtch = cnt.v_swtch; 271 272 /* update disk transfers */ 273 updatexfers(RSTAT_DK_NDRIVE, stats_all.s1.dk_xfer); 274 275 mib[0] = CTL_NET; 276 mib[1] = PF_LINK; 277 mib[2] = NETLINK_GENERIC; 278 mib[3] = IFMIB_SYSTEM; 279 mib[4] = IFMIB_IFCOUNT; 280 len = sizeof ifcount; 281 if (sysctl(mib, 5, &ifcount, &len, 0, 0) < 0) { 282 syslog(LOG_ERR, "sysctl(net.link.generic.system.ifcount): %m"); 283 exit(1); 284 } 285 286 stats_all.s1.if_ipackets = 0; 287 stats_all.s1.if_opackets = 0; 288 stats_all.s1.if_ierrors = 0; 289 stats_all.s1.if_oerrors = 0; 290 stats_all.s1.if_collisions = 0; 291 for (i = 1; i <= ifcount; i++) { 292 len = sizeof ifmd; 293 mib[3] = IFMIB_IFDATA; 294 mib[4] = i; 295 mib[5] = IFDATA_GENERAL; 296 if (sysctl(mib, 6, &ifmd, &len, 0, 0) < 0) { 297 syslog(LOG_ERR, "sysctl(net.link.ifdata.%d.general)" 298 ": %m", i); 299 exit(1); 300 } 301 302 stats_all.s1.if_ipackets += ifmd.ifmd_data.ifi_ipackets; 303 stats_all.s1.if_opackets += ifmd.ifmd_data.ifi_opackets; 304 stats_all.s1.if_ierrors += ifmd.ifmd_data.ifi_ierrors; 305 stats_all.s1.if_oerrors += ifmd.ifmd_data.ifi_oerrors; 306 stats_all.s1.if_collisions += ifmd.ifmd_data.ifi_collisions; 307 } 308 gettimeofday((struct timeval *)&stats_all.s3.curtime, 309 (struct timezone *) 0); 310 alarm(1); 311 } 312 313 void 314 setup() 315 { 316 char errbuf[_POSIX2_LINE_MAX]; 317 318 int en; 319 320 if ((kd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, errbuf)) == NULL) { 321 syslog(LOG_ERR, "rpc.rstatd, %s", errbuf); 322 exit(1); 323 } 324 325 if ((en = kvm_nlist(kd, nl)) != 0) { 326 syslog(LOG_ERR, "rstatd: Can't get namelist. %d", en); 327 exit (1); 328 } 329 } 330 331 /* 332 * returns true if have a disk 333 */ 334 int 335 havedisk() 336 { 337 register int i; 338 struct statinfo stats; 339 int num_devices, retval = 0; 340 341 if ((num_devices = getnumdevs()) < 0) { 342 syslog(LOG_ERR, "rstatd: can't get number of devices: %s", 343 devstat_errbuf); 344 exit(1); 345 } 346 347 if (checkversion() < 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 (getdevs(&stats) == -1) { 356 syslog(LOG_ERR, "rstatd: can't get device list: %s", 357 devstat_errbuf); 358 exit(1); 359 } 360 for (i = 0; i < stats.dinfo->numdevs; i++) { 361 if (((stats.dinfo->devices[i].device_type 362 & DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_DIRECT) 363 && ((stats.dinfo->devices[i].device_type 364 & DEVSTAT_TYPE_PASS) == 0)) { 365 retval = 1; 366 break; 367 } 368 } 369 370 if (stats.dinfo->mem_ptr) 371 free(stats.dinfo->mem_ptr); 372 373 free(stats.dinfo); 374 return(retval); 375 } 376 377 void 378 updatexfers(numdevs, devs) 379 int numdevs, *devs; 380 { 381 register int i, j, t; 382 struct statinfo stats; 383 int num_devices = 0; 384 u_int64_t total_transfers; 385 386 if ((num_devices = getnumdevs()) < 0) { 387 syslog(LOG_ERR, "rstatd: can't get number of devices: %s", 388 devstat_errbuf); 389 exit(1); 390 } 391 392 if (checkversion() < 0) { 393 syslog(LOG_ERR, "rstatd: %s", devstat_errbuf); 394 exit(1); 395 } 396 397 stats.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 398 bzero(stats.dinfo, sizeof(struct devinfo)); 399 400 if (getdevs(&stats) == -1) { 401 syslog(LOG_ERR, "rstatd: can't get device list: %s", 402 devstat_errbuf); 403 exit(1); 404 } 405 406 for (i = 0, j = 0; i < stats.dinfo->numdevs && j < numdevs; i++) { 407 if (((stats.dinfo->devices[i].device_type 408 & DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_DIRECT) 409 && ((stats.dinfo->devices[i].device_type 410 & DEVSTAT_TYPE_PASS) == 0)) { 411 total_transfers = stats.dinfo->devices[i].num_reads + 412 stats.dinfo->devices[i].num_writes + 413 stats.dinfo->devices[i].num_other; 414 /* 415 * XXX KDM If the total transfers for this device 416 * are greater than the amount we can fit in a 417 * signed integer, just set them to the maximum 418 * amount we can fit in a signed integer. I have a 419 * feeling that the rstat protocol assumes 32-bit 420 * integers, so this could well break on a 64-bit 421 * architecture like the Alpha. 422 */ 423 if (total_transfers > INT_MAX) 424 t = INT_MAX; 425 else 426 t = total_transfers; 427 devs[j] = t; 428 j++; 429 } 430 } 431 432 if (stats.dinfo->mem_ptr) 433 free(stats.dinfo->mem_ptr); 434 435 free(stats.dinfo); 436 } 437 438 void 439 rstat_service(rqstp, transp) 440 struct svc_req *rqstp; 441 SVCXPRT *transp; 442 { 443 union { 444 int fill; 445 } argument; 446 char *result; 447 bool_t (*xdr_argument)(), (*xdr_result)(); 448 char *(*local)(); 449 450 switch (rqstp->rq_proc) { 451 case NULLPROC: 452 (void)svc_sendreply(transp, xdr_void, (char *)NULL); 453 goto leave; 454 455 case RSTATPROC_STATS: 456 xdr_argument = xdr_void; 457 xdr_result = xdr_statstime; 458 switch (rqstp->rq_vers) { 459 case RSTATVERS_ORIG: 460 local = (char *(*)()) rstatproc_stats_1_svc; 461 break; 462 case RSTATVERS_SWTCH: 463 local = (char *(*)()) rstatproc_stats_2_svc; 464 break; 465 case RSTATVERS_TIME: 466 local = (char *(*)()) rstatproc_stats_3_svc; 467 break; 468 default: 469 svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME); 470 goto leave; 471 /*NOTREACHED*/ 472 } 473 break; 474 475 case RSTATPROC_HAVEDISK: 476 xdr_argument = xdr_void; 477 xdr_result = xdr_u_int; 478 switch (rqstp->rq_vers) { 479 case RSTATVERS_ORIG: 480 local = (char *(*)()) rstatproc_havedisk_1_svc; 481 break; 482 case RSTATVERS_SWTCH: 483 local = (char *(*)()) rstatproc_havedisk_2_svc; 484 break; 485 case RSTATVERS_TIME: 486 local = (char *(*)()) rstatproc_havedisk_3_svc; 487 break; 488 default: 489 svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME); 490 goto leave; 491 /*NOTREACHED*/ 492 } 493 break; 494 495 default: 496 svcerr_noproc(transp); 497 goto leave; 498 } 499 bzero((char *)&argument, sizeof(argument)); 500 if (!svc_getargs(transp, xdr_argument, (caddr_t)&argument)) { 501 svcerr_decode(transp); 502 goto leave; 503 } 504 result = (*local)(&argument, rqstp); 505 if (result != NULL && !svc_sendreply(transp, xdr_result, result)) { 506 svcerr_systemerr(transp); 507 } 508 if (!svc_freeargs(transp, xdr_argument, (caddr_t)&argument)) 509 errx(1, "unable to free arguments"); 510 leave: 511 if (from_inetd) 512 exit(0); 513 } 514