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 * @(#)rpc.rstatd.c 1.1 86/09/25 Copyr 1984 Sun Micro 30 * @(#)rstat_proc.c 2.2 88/08/01 4.0 RPCSRC 31 * $FreeBSD: src/libexec/rpc.rstatd/rstat_proc.c,v 1.14.2.1 2002/07/11 17:17:56 alfred Exp $ 32 */ 33 34 /* 35 * rstat service: built with rstat.x and derived from rpc.rstatd.c 36 * 37 * Copyright (c) 1984 by Sun Microsystems, Inc. 38 */ 39 40 #include <sys/param.h> 41 #include <sys/socket.h> 42 #include <sys/sysctl.h> 43 #include <sys/time.h> 44 #include <sys/vmmeter.h> 45 46 #include <err.h> 47 #include <fcntl.h> 48 #include <kinfo.h> 49 #include <limits.h> 50 #include <signal.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 #include <syslog.h> 55 #include <unistd.h> 56 #include <devstat.h> 57 58 #include <net/if.h> 59 #include <net/if_mib.h> 60 61 #undef FSHIFT /* Use protocol's shift and scale values */ 62 #undef FSCALE 63 #undef if_ipackets 64 #undef if_ierrors 65 #undef if_opackets 66 #undef if_oerrors 67 #undef if_collisions 68 #include <rpcsvc/rstat.h> 69 70 int haveadisk (void); 71 void updatexfers (int, int *); 72 void setup (void); 73 int stats_service(); 74 75 extern int from_inetd; 76 int sincelastreq = 0; /* number of alarms since last request */ 77 extern int closedown; 78 79 union { 80 struct stats s1; 81 struct statsswtch s2; 82 struct statstime s3; 83 } stats_all; 84 85 void updatestat(); 86 static int stat_is_init = 0; 87 88 #ifndef FSCALE 89 #define FSCALE (1 << 8) 90 #endif 91 92 void 93 stat_init() 94 { 95 stat_is_init = 1; 96 alarm(0); 97 updatestat(); 98 (void) signal(SIGALRM, updatestat); 99 alarm(1); 100 } 101 102 statstime * 103 rstatproc_stats_3_svc(argp, rqstp) 104 void *argp; 105 struct svc_req *rqstp; 106 { 107 if (! stat_is_init) 108 stat_init(); 109 sincelastreq = 0; 110 return(&stats_all.s3); 111 } 112 113 statsswtch * 114 rstatproc_stats_2_svc(argp, rqstp) 115 void *argp; 116 struct svc_req *rqstp; 117 { 118 if (! stat_is_init) 119 stat_init(); 120 sincelastreq = 0; 121 return(&stats_all.s2); 122 } 123 124 stats * 125 rstatproc_stats_1_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.s1); 133 } 134 135 u_int * 136 rstatproc_havedisk_3_svc(argp, rqstp) 137 void *argp; 138 struct svc_req *rqstp; 139 { 140 static u_int have; 141 142 if (! stat_is_init) 143 stat_init(); 144 sincelastreq = 0; 145 have = haveadisk(); 146 return(&have); 147 } 148 149 u_int * 150 rstatproc_havedisk_2_svc(argp, rqstp) 151 void *argp; 152 struct svc_req *rqstp; 153 { 154 return(rstatproc_havedisk_3_svc(argp, rqstp)); 155 } 156 157 u_int * 158 rstatproc_havedisk_1_svc(argp, rqstp) 159 void *argp; 160 struct svc_req *rqstp; 161 { 162 return(rstatproc_havedisk_3_svc(argp, rqstp)); 163 } 164 165 void 166 updatestat() 167 { 168 int i, hz; 169 struct clockinfo clockrate; 170 struct vmmeter vmm; 171 size_t vmm_size = sizeof(vmm); 172 struct ifmibdata ifmd; 173 double avrun[3]; 174 struct timeval tm, btm; 175 struct kinfo_cputime cp_time; 176 int mib[6]; 177 size_t len; 178 int ifcount; 179 180 #ifdef DEBUG 181 fprintf(stderr, "entering updatestat\n"); 182 #endif 183 if (sincelastreq >= closedown) { 184 #ifdef DEBUG 185 fprintf(stderr, "about to closedown\n"); 186 #endif 187 if (from_inetd) 188 exit(0); 189 else { 190 stat_is_init = 0; 191 return; 192 } 193 } 194 sincelastreq++; 195 196 mib[0] = CTL_KERN; 197 mib[1] = KERN_CLOCKRATE; 198 len = sizeof clockrate; 199 if (sysctl(mib, 2, &clockrate, &len, 0, 0) < 0) { 200 syslog(LOG_ERR, "sysctl(kern.clockrate): %m"); 201 exit(1); 202 } 203 hz = clockrate.hz; 204 205 if (kinfo_get_sched_cputime(&cp_time)) { 206 syslog(LOG_ERR, "rstat: can't read cp_time from kmem"); 207 exit(1); 208 } 209 stats_all.s1.cp_time[0] = cp_time.cp_user; 210 stats_all.s1.cp_time[1] = cp_time.cp_nice; 211 stats_all.s1.cp_time[2] = cp_time.cp_sys; 212 stats_all.s1.cp_time[3] = cp_time.cp_idle; 213 214 (void)getloadavg(avrun, sizeof(avrun) / sizeof(avrun[0])); 215 216 stats_all.s2.avenrun[0] = avrun[0] * FSCALE; 217 stats_all.s2.avenrun[1] = avrun[1] * FSCALE; 218 stats_all.s2.avenrun[2] = avrun[2] * FSCALE; 219 220 mib[0] = CTL_KERN; 221 mib[1] = KERN_BOOTTIME; 222 len = sizeof btm; 223 if (sysctl(mib, 2, &btm, &len, 0, 0) < 0) { 224 syslog(LOG_ERR, "sysctl(kern.boottime): %m"); 225 exit(1); 226 } 227 228 stats_all.s2.boottime.tv_sec = btm.tv_sec; 229 stats_all.s2.boottime.tv_usec = btm.tv_usec; 230 231 232 #ifdef DEBUG 233 fprintf(stderr, "%d %d %d %d\n", stats_all.s1.cp_time[0], 234 stats_all.s1.cp_time[1], stats_all.s1.cp_time[2], stats_all.s1.cp_time[3]); 235 #endif 236 237 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 238 syslog(LOG_ERR, "sysctlbyname: vm.vmmeter"); 239 exit(1); 240 } 241 stats_all.s1.v_pgpgin = vmm.v_vnodepgsin; 242 stats_all.s1.v_pgpgout = vmm.v_vnodepgsout; 243 stats_all.s1.v_pswpin = vmm.v_swappgsin; 244 stats_all.s1.v_pswpout = vmm.v_swappgsout; 245 stats_all.s1.v_intr = vmm.v_intr; 246 gettimeofday(&tm, NULL); 247 stats_all.s1.v_intr -= hz*(tm.tv_sec - btm.tv_sec) + 248 hz*(tm.tv_usec - btm.tv_usec)/1000000; 249 stats_all.s2.v_swtch = vmm.v_swtch; 250 251 /* update disk transfers */ 252 updatexfers(RSTAT_DK_NDRIVE, stats_all.s1.dk_xfer); 253 254 mib[0] = CTL_NET; 255 mib[1] = PF_LINK; 256 mib[2] = NETLINK_GENERIC; 257 mib[3] = IFMIB_SYSTEM; 258 mib[4] = IFMIB_IFCOUNT; 259 len = sizeof ifcount; 260 if (sysctl(mib, 5, &ifcount, &len, 0, 0) < 0) { 261 syslog(LOG_ERR, "sysctl(net.link.generic.system.ifcount): %m"); 262 exit(1); 263 } 264 265 stats_all.s1.if_ipackets = 0; 266 stats_all.s1.if_opackets = 0; 267 stats_all.s1.if_ierrors = 0; 268 stats_all.s1.if_oerrors = 0; 269 stats_all.s1.if_collisions = 0; 270 for (i = 1; i <= ifcount; i++) { 271 len = sizeof ifmd; 272 mib[3] = IFMIB_IFDATA; 273 mib[4] = i; 274 mib[5] = IFDATA_GENERAL; 275 if (sysctl(mib, 6, &ifmd, &len, 0, 0) < 0) { 276 syslog(LOG_ERR, "sysctl(net.link.ifdata.%d.general)" 277 ": %m", i); 278 exit(1); 279 } 280 281 stats_all.s1.if_ipackets += ifmd.ifmd_data.ifi_ipackets; 282 stats_all.s1.if_opackets += ifmd.ifmd_data.ifi_opackets; 283 stats_all.s1.if_ierrors += ifmd.ifmd_data.ifi_ierrors; 284 stats_all.s1.if_oerrors += ifmd.ifmd_data.ifi_oerrors; 285 stats_all.s1.if_collisions += ifmd.ifmd_data.ifi_collisions; 286 } 287 gettimeofday((struct timeval *)&stats_all.s3.curtime, NULL); 288 alarm(1); 289 } 290 291 /* 292 * returns true if have a disk 293 */ 294 int 295 haveadisk() 296 { 297 register int i; 298 struct statinfo stats; 299 int num_devices, retval = 0; 300 301 if ((num_devices = getnumdevs()) < 0) { 302 syslog(LOG_ERR, "rstatd: can't get number of devices: %s", 303 devstat_errbuf); 304 exit(1); 305 } 306 307 if (checkversion() < 0) { 308 syslog(LOG_ERR, "rstatd: %s", devstat_errbuf); 309 exit(1); 310 } 311 312 stats.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 313 bzero(stats.dinfo, sizeof(struct devinfo)); 314 315 if (getdevs(&stats) == -1) { 316 syslog(LOG_ERR, "rstatd: can't get device list: %s", 317 devstat_errbuf); 318 exit(1); 319 } 320 for (i = 0; i < stats.dinfo->numdevs; i++) { 321 if (((stats.dinfo->devices[i].device_type 322 & DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_DIRECT) 323 && ((stats.dinfo->devices[i].device_type 324 & DEVSTAT_TYPE_PASS) == 0)) { 325 retval = 1; 326 break; 327 } 328 } 329 330 if (stats.dinfo->mem_ptr) 331 free(stats.dinfo->mem_ptr); 332 333 free(stats.dinfo); 334 return(retval); 335 } 336 337 void 338 updatexfers(numdevs, devs) 339 int numdevs, *devs; 340 { 341 register int i, j, t; 342 struct statinfo stats; 343 int num_devices = 0; 344 u_int64_t total_transfers; 345 346 if ((num_devices = getnumdevs()) < 0) { 347 syslog(LOG_ERR, "rstatd: can't get number of devices: %s", 348 devstat_errbuf); 349 exit(1); 350 } 351 352 if (checkversion() < 0) { 353 syslog(LOG_ERR, "rstatd: %s", devstat_errbuf); 354 exit(1); 355 } 356 357 stats.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 358 bzero(stats.dinfo, sizeof(struct devinfo)); 359 360 if (getdevs(&stats) == -1) { 361 syslog(LOG_ERR, "rstatd: can't get device list: %s", 362 devstat_errbuf); 363 exit(1); 364 } 365 366 for (i = 0, j = 0; i < stats.dinfo->numdevs && j < numdevs; i++) { 367 if (((stats.dinfo->devices[i].device_type 368 & DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_DIRECT) 369 && ((stats.dinfo->devices[i].device_type 370 & DEVSTAT_TYPE_PASS) == 0)) { 371 total_transfers = stats.dinfo->devices[i].num_reads + 372 stats.dinfo->devices[i].num_writes + 373 stats.dinfo->devices[i].num_other; 374 /* 375 * XXX KDM If the total transfers for this device 376 * are greater than the amount we can fit in a 377 * signed integer, just set them to the maximum 378 * amount we can fit in a signed integer. I have a 379 * feeling that the rstat protocol assumes 32-bit 380 * integers, so this could well break on a 64-bit 381 * architecture like the Alpha. 382 */ 383 if (total_transfers > INT_MAX) 384 t = INT_MAX; 385 else 386 t = total_transfers; 387 devs[j] = t; 388 j++; 389 } 390 } 391 392 if (stats.dinfo->mem_ptr) 393 free(stats.dinfo->mem_ptr); 394 395 free(stats.dinfo); 396 } 397 398 void 399 rstat_service(rqstp, transp) 400 struct svc_req *rqstp; 401 SVCXPRT *transp; 402 { 403 union { 404 int fill; 405 } argument; 406 char *result; 407 bool_t (*xdr_argument)(), (*xdr_result)(); 408 char *(*local)(); 409 410 switch (rqstp->rq_proc) { 411 case NULLPROC: 412 (void)svc_sendreply(transp, (xdrproc_t)xdr_void, NULL); 413 goto leave; 414 415 case RSTATPROC_STATS: 416 xdr_argument = xdr_void; 417 xdr_result = xdr_statstime; 418 switch (rqstp->rq_vers) { 419 case RSTATVERS_ORIG: 420 local = (char *(*)()) rstatproc_stats_1_svc; 421 break; 422 case RSTATVERS_SWTCH: 423 local = (char *(*)()) rstatproc_stats_2_svc; 424 break; 425 case RSTATVERS_TIME: 426 local = (char *(*)()) rstatproc_stats_3_svc; 427 break; 428 default: 429 svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME); 430 goto leave; 431 /*NOTREACHED*/ 432 } 433 break; 434 435 case RSTATPROC_HAVEDISK: 436 xdr_argument = xdr_void; 437 xdr_result = xdr_u_int; 438 switch (rqstp->rq_vers) { 439 case RSTATVERS_ORIG: 440 local = (char *(*)()) rstatproc_havedisk_1_svc; 441 break; 442 case RSTATVERS_SWTCH: 443 local = (char *(*)()) rstatproc_havedisk_2_svc; 444 break; 445 case RSTATVERS_TIME: 446 local = (char *(*)()) rstatproc_havedisk_3_svc; 447 break; 448 default: 449 svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME); 450 goto leave; 451 /*NOTREACHED*/ 452 } 453 break; 454 455 default: 456 svcerr_noproc(transp); 457 goto leave; 458 } 459 bzero((char *)&argument, sizeof(argument)); 460 if (!svc_getargs(transp, (xdrproc_t)xdr_argument, (caddr_t)&argument)) { 461 svcerr_decode(transp); 462 goto leave; 463 } 464 result = (*local)(&argument, rqstp); 465 if (result != NULL && 466 !svc_sendreply(transp, (xdrproc_t)xdr_result, result)) { 467 svcerr_systemerr(transp); 468 } 469 if (!svc_freeargs(transp, (xdrproc_t)xdr_argument, (caddr_t)&argument)) 470 errx(1, "unable to free arguments"); 471 leave: 472 if (from_inetd) 473 exit(0); 474 } 475