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