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