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 <errno.h> 55 #include <fcntl.h> 56 #include <kvm.h> 57 #include <limits.h> 58 #include <signal.h> 59 #include <stdio.h> 60 #include <stdlib.h> 61 #include <string.h> 62 #include <syslog.h> 63 #include <unistd.h> 64 #include <devstat.h> 65 66 #include <net/if.h> 67 #include <net/if_mib.h> 68 69 #undef FSHIFT /* Use protocol's shift and scale values */ 70 #undef FSCALE 71 #undef if_ipackets 72 #undef if_ierrors 73 #undef if_opackets 74 #undef if_oerrors 75 #undef if_collisions 76 #include <rpcsvc/rstat.h> 77 78 struct nlist nl[] = { 79 #define X_CPTIME 0 80 { "_cp_time" }, 81 #define X_CNT 1 82 { "_cnt" }, 83 { "" }, 84 }; 85 86 int havedisk __P((void)); 87 void updatexfers __P((int, int *)); 88 void setup __P((void)); 89 int stats_service(); 90 91 extern int from_inetd; 92 int sincelastreq = 0; /* number of alarms since last request */ 93 extern int closedown; 94 95 union { 96 struct stats s1; 97 struct statsswtch s2; 98 struct statstime s3; 99 } stats_all; 100 101 void updatestat(); 102 static stat_is_init = 0; 103 static kvm_t *kd; 104 105 static int cp_time_xlat[RSTAT_CPUSTATES] = { CP_USER, CP_NICE, CP_SYS, 106 CP_IDLE }; 107 static long bsd_cp_time[CPUSTATES]; 108 109 110 #ifndef FSCALE 111 #define FSCALE (1 << 8) 112 #endif 113 114 void 115 stat_init() 116 { 117 stat_is_init = 1; 118 setup(); 119 alarm(0); 120 updatestat(); 121 (void) signal(SIGALRM, updatestat); 122 alarm(1); 123 } 124 125 statstime * 126 rstatproc_stats_3_svc(argp, rqstp) 127 void *argp; 128 struct svc_req *rqstp; 129 { 130 if (! stat_is_init) 131 stat_init(); 132 sincelastreq = 0; 133 return(&stats_all.s3); 134 } 135 136 statsswtch * 137 rstatproc_stats_2_svc(argp, rqstp) 138 void *argp; 139 struct svc_req *rqstp; 140 { 141 if (! stat_is_init) 142 stat_init(); 143 sincelastreq = 0; 144 return(&stats_all.s2); 145 } 146 147 stats * 148 rstatproc_stats_1_svc(argp, rqstp) 149 void *argp; 150 struct svc_req *rqstp; 151 { 152 if (! stat_is_init) 153 stat_init(); 154 sincelastreq = 0; 155 return(&stats_all.s1); 156 } 157 158 u_int * 159 rstatproc_havedisk_3_svc(argp, rqstp) 160 void *argp; 161 struct svc_req *rqstp; 162 { 163 static u_int have; 164 165 if (! stat_is_init) 166 stat_init(); 167 sincelastreq = 0; 168 have = havedisk(); 169 return(&have); 170 } 171 172 u_int * 173 rstatproc_havedisk_2_svc(argp, rqstp) 174 void *argp; 175 struct svc_req *rqstp; 176 { 177 return(rstatproc_havedisk_3_svc(argp, rqstp)); 178 } 179 180 u_int * 181 rstatproc_havedisk_1_svc(argp, rqstp) 182 void *argp; 183 struct svc_req *rqstp; 184 { 185 return(rstatproc_havedisk_3_svc(argp, rqstp)); 186 } 187 188 void 189 updatestat() 190 { 191 int i, hz; 192 struct clockinfo clockrate; 193 struct vmmeter cnt; 194 struct ifmibdata ifmd; 195 double avrun[3]; 196 struct timeval tm, btm; 197 int mib[6]; 198 size_t len; 199 int ifcount; 200 201 #ifdef DEBUG 202 fprintf(stderr, "entering updatestat\n"); 203 #endif 204 if (sincelastreq >= closedown) { 205 #ifdef DEBUG 206 fprintf(stderr, "about to closedown\n"); 207 #endif 208 kvm_close(kd); 209 if (from_inetd) 210 exit(0); 211 else { 212 stat_is_init = 0; 213 return; 214 } 215 } 216 sincelastreq++; 217 218 mib[0] = CTL_KERN; 219 mib[1] = KERN_CLOCKRATE; 220 len = sizeof clockrate; 221 if (sysctl(mib, 2, &clockrate, &len, 0, 0) < 0) { 222 syslog(LOG_ERR, "sysctl(kern.clockrate): %m"); 223 exit(1); 224 } 225 hz = clockrate.hz; 226 227 if (kvm_read(kd, (long)nl[X_CPTIME].n_value, (char *)bsd_cp_time, sizeof(bsd_cp_time)) 228 != sizeof(bsd_cp_time)) { 229 syslog(LOG_ERR, "rstat: can't read cp_time from kmem"); 230 exit(1); 231 } 232 for(i = 0; i < RSTAT_CPUSTATES ; i++) 233 stats_all.s1.cp_time[i] = bsd_cp_time[cp_time_xlat[i]]; 234 235 (void)getloadavg(avrun, sizeof(avrun) / sizeof(avrun[0])); 236 237 stats_all.s2.avenrun[0] = avrun[0] * FSCALE; 238 stats_all.s2.avenrun[1] = avrun[1] * FSCALE; 239 stats_all.s2.avenrun[2] = avrun[2] * FSCALE; 240 241 mib[0] = CTL_KERN; 242 mib[1] = KERN_BOOTTIME; 243 len = sizeof btm; 244 if (sysctl(mib, 2, &btm, &len, 0, 0) < 0) { 245 syslog(LOG_ERR, "sysctl(kern.boottime): %m"); 246 exit(1); 247 } 248 249 stats_all.s2.boottime.tv_sec = btm.tv_sec; 250 stats_all.s2.boottime.tv_usec = btm.tv_usec; 251 252 253 #ifdef DEBUG 254 fprintf(stderr, "%d %d %d %d\n", stats_all.s1.cp_time[0], 255 stats_all.s1.cp_time[1], stats_all.s1.cp_time[2], stats_all.s1.cp_time[3]); 256 #endif 257 258 /* XXX - should use sysctl */ 259 if (kvm_read(kd, (long)nl[X_CNT].n_value, (char *)&cnt, sizeof cnt) != sizeof cnt) { 260 syslog(LOG_ERR, "rstat: can't read cnt from kmem"); 261 exit(1); 262 } 263 stats_all.s1.v_pgpgin = cnt.v_vnodepgsin; 264 stats_all.s1.v_pgpgout = cnt.v_vnodepgsout; 265 stats_all.s1.v_pswpin = cnt.v_swappgsin; 266 stats_all.s1.v_pswpout = cnt.v_swappgsout; 267 stats_all.s1.v_intr = cnt.v_intr; 268 gettimeofday(&tm, (struct timezone *) 0); 269 stats_all.s1.v_intr -= hz*(tm.tv_sec - btm.tv_sec) + 270 hz*(tm.tv_usec - btm.tv_usec)/1000000; 271 stats_all.s2.v_swtch = cnt.v_swtch; 272 273 /* update disk transfers */ 274 updatexfers(RSTAT_DK_NDRIVE, stats_all.s1.dk_xfer); 275 276 mib[0] = CTL_NET; 277 mib[1] = PF_LINK; 278 mib[2] = NETLINK_GENERIC; 279 mib[3] = IFMIB_SYSTEM; 280 mib[4] = IFMIB_IFCOUNT; 281 len = sizeof ifcount; 282 if (sysctl(mib, 5, &ifcount, &len, 0, 0) < 0) { 283 syslog(LOG_ERR, "sysctl(net.link.generic.system.ifcount): %m"); 284 exit(1); 285 } 286 287 stats_all.s1.if_ipackets = 0; 288 stats_all.s1.if_opackets = 0; 289 stats_all.s1.if_ierrors = 0; 290 stats_all.s1.if_oerrors = 0; 291 stats_all.s1.if_collisions = 0; 292 for (i = 1; i <= ifcount; i++) { 293 len = sizeof ifmd; 294 mib[3] = IFMIB_IFDATA; 295 mib[4] = i; 296 mib[5] = IFDATA_GENERAL; 297 if (sysctl(mib, 6, &ifmd, &len, 0, 0) < 0) { 298 if (errno == ENOENT) 299 continue; 300 301 syslog(LOG_ERR, "sysctl(net.link.ifdata.%d.general)" 302 ": %m", i); 303 exit(1); 304 } 305 306 stats_all.s1.if_ipackets += ifmd.ifmd_data.ifi_ipackets; 307 stats_all.s1.if_opackets += ifmd.ifmd_data.ifi_opackets; 308 stats_all.s1.if_ierrors += ifmd.ifmd_data.ifi_ierrors; 309 stats_all.s1.if_oerrors += ifmd.ifmd_data.ifi_oerrors; 310 stats_all.s1.if_collisions += ifmd.ifmd_data.ifi_collisions; 311 } 312 gettimeofday((struct timeval *)&stats_all.s3.curtime, 313 (struct timezone *) 0); 314 alarm(1); 315 } 316 317 void 318 setup() 319 { 320 char errbuf[_POSIX2_LINE_MAX]; 321 322 int en; 323 324 if ((kd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, errbuf)) == NULL) { 325 syslog(LOG_ERR, "rpc.rstatd, %s", errbuf); 326 exit(1); 327 } 328 329 if ((en = kvm_nlist(kd, nl)) != 0) { 330 syslog(LOG_ERR, "rstatd: Can't get namelist. %d", en); 331 exit (1); 332 } 333 } 334 335 /* 336 * returns true if have a disk 337 */ 338 int 339 havedisk() 340 { 341 register int i; 342 struct statinfo stats; 343 int num_devices, retval = 0; 344 345 if ((num_devices = getnumdevs()) < 0) { 346 syslog(LOG_ERR, "rstatd: can't get number of devices: %s", 347 devstat_errbuf); 348 exit(1); 349 } 350 351 if (checkversion() < 0) { 352 syslog(LOG_ERR, "rstatd: %s", devstat_errbuf); 353 exit(1); 354 } 355 356 stats.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 357 bzero(stats.dinfo, sizeof(struct devinfo)); 358 359 if (getdevs(&stats) == -1) { 360 syslog(LOG_ERR, "rstatd: can't get device list: %s", 361 devstat_errbuf); 362 exit(1); 363 } 364 for (i = 0; i < stats.dinfo->numdevs; i++) { 365 if (((stats.dinfo->devices[i].device_type 366 & DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_DIRECT) 367 && ((stats.dinfo->devices[i].device_type 368 & DEVSTAT_TYPE_PASS) == 0)) { 369 retval = 1; 370 break; 371 } 372 } 373 374 if (stats.dinfo->mem_ptr) 375 free(stats.dinfo->mem_ptr); 376 377 free(stats.dinfo); 378 return(retval); 379 } 380 381 void 382 updatexfers(numdevs, devs) 383 int numdevs, *devs; 384 { 385 register int i, j, t; 386 struct statinfo stats; 387 int num_devices = 0; 388 u_int64_t total_transfers; 389 390 if ((num_devices = getnumdevs()) < 0) { 391 syslog(LOG_ERR, "rstatd: can't get number of devices: %s", 392 devstat_errbuf); 393 exit(1); 394 } 395 396 if (checkversion() < 0) { 397 syslog(LOG_ERR, "rstatd: %s", devstat_errbuf); 398 exit(1); 399 } 400 401 stats.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 402 bzero(stats.dinfo, sizeof(struct devinfo)); 403 404 if (getdevs(&stats) == -1) { 405 syslog(LOG_ERR, "rstatd: can't get device list: %s", 406 devstat_errbuf); 407 exit(1); 408 } 409 410 for (i = 0, j = 0; i < stats.dinfo->numdevs && j < numdevs; i++) { 411 if (((stats.dinfo->devices[i].device_type 412 & DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_DIRECT) 413 && ((stats.dinfo->devices[i].device_type 414 & DEVSTAT_TYPE_PASS) == 0)) { 415 total_transfers = stats.dinfo->devices[i].num_reads + 416 stats.dinfo->devices[i].num_writes + 417 stats.dinfo->devices[i].num_other; 418 /* 419 * XXX KDM If the total transfers for this device 420 * are greater than the amount we can fit in a 421 * signed integer, just set them to the maximum 422 * amount we can fit in a signed integer. I have a 423 * feeling that the rstat protocol assumes 32-bit 424 * integers, so this could well break on a 64-bit 425 * architecture like the Alpha. 426 */ 427 if (total_transfers > INT_MAX) 428 t = INT_MAX; 429 else 430 t = total_transfers; 431 devs[j] = t; 432 j++; 433 } 434 } 435 436 if (stats.dinfo->mem_ptr) 437 free(stats.dinfo->mem_ptr); 438 439 free(stats.dinfo); 440 } 441 442 void 443 rstat_service(rqstp, transp) 444 struct svc_req *rqstp; 445 SVCXPRT *transp; 446 { 447 union { 448 int fill; 449 } argument; 450 char *result; 451 bool_t (*xdr_argument)(), (*xdr_result)(); 452 char *(*local)(); 453 454 switch (rqstp->rq_proc) { 455 case NULLPROC: 456 (void)svc_sendreply(transp, xdr_void, (char *)NULL); 457 goto leave; 458 459 case RSTATPROC_STATS: 460 xdr_argument = xdr_void; 461 xdr_result = xdr_statstime; 462 switch (rqstp->rq_vers) { 463 case RSTATVERS_ORIG: 464 local = (char *(*)()) rstatproc_stats_1_svc; 465 break; 466 case RSTATVERS_SWTCH: 467 local = (char *(*)()) rstatproc_stats_2_svc; 468 break; 469 case RSTATVERS_TIME: 470 local = (char *(*)()) rstatproc_stats_3_svc; 471 break; 472 default: 473 svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME); 474 goto leave; 475 /*NOTREACHED*/ 476 } 477 break; 478 479 case RSTATPROC_HAVEDISK: 480 xdr_argument = xdr_void; 481 xdr_result = xdr_u_int; 482 switch (rqstp->rq_vers) { 483 case RSTATVERS_ORIG: 484 local = (char *(*)()) rstatproc_havedisk_1_svc; 485 break; 486 case RSTATVERS_SWTCH: 487 local = (char *(*)()) rstatproc_havedisk_2_svc; 488 break; 489 case RSTATVERS_TIME: 490 local = (char *(*)()) rstatproc_havedisk_3_svc; 491 break; 492 default: 493 svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME); 494 goto leave; 495 /*NOTREACHED*/ 496 } 497 break; 498 499 default: 500 svcerr_noproc(transp); 501 goto leave; 502 } 503 bzero((char *)&argument, sizeof(argument)); 504 if (!svc_getargs(transp, xdr_argument, (caddr_t)&argument)) { 505 svcerr_decode(transp); 506 goto leave; 507 } 508 result = (*local)(&argument, rqstp); 509 if (result != NULL && !svc_sendreply(transp, xdr_result, result)) { 510 svcerr_systemerr(transp); 511 } 512 if (!svc_freeargs(transp, xdr_argument, (caddr_t)&argument)) 513 errx(1, "unable to free arguments"); 514 leave: 515 if (from_inetd) 516 exit(0); 517 } 518