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 * $DragonFly: src/libexec/rpc.rstatd/rstat_proc.c,v 1.5 2005/01/31 21:20:58 joerg Exp $ 33 */ 34 35 /* 36 * rstat service: built with rstat.x and derived from rpc.rstatd.c 37 * 38 * Copyright (c) 1984 by Sun Microsystems, Inc. 39 */ 40 41 #include <sys/param.h> 42 #include <sys/kinfo.h> 43 #include <sys/socket.h> 44 #include <sys/sysctl.h> 45 #include <sys/time.h> 46 #include <sys/vmmeter.h> 47 #include <sys/param.h> 48 49 #include <err.h> 50 #include <fcntl.h> 51 #include <limits.h> 52 #include <signal.h> 53 #include <stdio.h> 54 #include <stdlib.h> 55 #include <string.h> 56 #include <syslog.h> 57 #include <unistd.h> 58 #include <devstat.h> 59 60 #include <net/if.h> 61 #include <net/if_mib.h> 62 63 #undef FSHIFT /* Use protocol's shift and scale values */ 64 #undef FSCALE 65 #undef if_ipackets 66 #undef if_ierrors 67 #undef if_opackets 68 #undef if_oerrors 69 #undef if_collisions 70 #include <rpcsvc/rstat.h> 71 72 int haveadisk (void); 73 void updatexfers (int, int *); 74 void setup (void); 75 int stats_service(); 76 77 extern int from_inetd; 78 int sincelastreq = 0; /* number of alarms since last request */ 79 extern int closedown; 80 81 union { 82 struct stats s1; 83 struct statsswtch s2; 84 struct statstime s3; 85 } stats_all; 86 87 void updatestat(); 88 static stat_is_init = 0; 89 90 #ifndef FSCALE 91 #define FSCALE (1 << 8) 92 #endif 93 94 void 95 stat_init() 96 { 97 stat_is_init = 1; 98 alarm(0); 99 updatestat(); 100 (void) signal(SIGALRM, updatestat); 101 alarm(1); 102 } 103 104 statstime * 105 rstatproc_stats_3_svc(argp, rqstp) 106 void *argp; 107 struct svc_req *rqstp; 108 { 109 if (! stat_is_init) 110 stat_init(); 111 sincelastreq = 0; 112 return(&stats_all.s3); 113 } 114 115 statsswtch * 116 rstatproc_stats_2_svc(argp, rqstp) 117 void *argp; 118 struct svc_req *rqstp; 119 { 120 if (! stat_is_init) 121 stat_init(); 122 sincelastreq = 0; 123 return(&stats_all.s2); 124 } 125 126 stats * 127 rstatproc_stats_1_svc(argp, rqstp) 128 void *argp; 129 struct svc_req *rqstp; 130 { 131 if (! stat_is_init) 132 stat_init(); 133 sincelastreq = 0; 134 return(&stats_all.s1); 135 } 136 137 u_int * 138 rstatproc_havedisk_3_svc(argp, rqstp) 139 void *argp; 140 struct svc_req *rqstp; 141 { 142 static u_int have; 143 144 if (! stat_is_init) 145 stat_init(); 146 sincelastreq = 0; 147 have = haveadisk(); 148 return(&have); 149 } 150 151 u_int * 152 rstatproc_havedisk_2_svc(argp, rqstp) 153 void *argp; 154 struct svc_req *rqstp; 155 { 156 return(rstatproc_havedisk_3_svc(argp, rqstp)); 157 } 158 159 u_int * 160 rstatproc_havedisk_1_svc(argp, rqstp) 161 void *argp; 162 struct svc_req *rqstp; 163 { 164 return(rstatproc_havedisk_3_svc(argp, rqstp)); 165 } 166 167 void 168 updatestat() 169 { 170 int i, hz; 171 struct clockinfo clockrate; 172 struct vmmeter vmm; 173 size_t vmm_size = sizeof(vmm); 174 struct ifmibdata ifmd; 175 double avrun[3]; 176 struct timeval tm, btm; 177 struct kinfo_cputime cp_time; 178 int mib[6]; 179 size_t len; 180 int ifcount; 181 182 #ifdef DEBUG 183 fprintf(stderr, "entering updatestat\n"); 184 #endif 185 if (sincelastreq >= closedown) { 186 #ifdef DEBUG 187 fprintf(stderr, "about to closedown\n"); 188 #endif 189 if (from_inetd) 190 exit(0); 191 else { 192 stat_is_init = 0; 193 return; 194 } 195 } 196 sincelastreq++; 197 198 mib[0] = CTL_KERN; 199 mib[1] = KERN_CLOCKRATE; 200 len = sizeof clockrate; 201 if (sysctl(mib, 2, &clockrate, &len, 0, 0) < 0) { 202 syslog(LOG_ERR, "sysctl(kern.clockrate): %m"); 203 exit(1); 204 } 205 hz = clockrate.hz; 206 207 if (kinfo_get_sched_cputime(&cp_time)) { 208 syslog(LOG_ERR, "rstat: can't read cp_time from kmem"); 209 exit(1); 210 } 211 stats_all.s1.cp_time[0] = cp_time.cp_user; 212 stats_all.s1.cp_time[1] = cp_time.cp_nice; 213 stats_all.s1.cp_time[2] = cp_time.cp_sys; 214 stats_all.s1.cp_time[3] = cp_time.cp_idle; 215 216 (void)getloadavg(avrun, sizeof(avrun) / sizeof(avrun[0])); 217 218 stats_all.s2.avenrun[0] = avrun[0] * FSCALE; 219 stats_all.s2.avenrun[1] = avrun[1] * FSCALE; 220 stats_all.s2.avenrun[2] = avrun[2] * FSCALE; 221 222 mib[0] = CTL_KERN; 223 mib[1] = KERN_BOOTTIME; 224 len = sizeof btm; 225 if (sysctl(mib, 2, &btm, &len, 0, 0) < 0) { 226 syslog(LOG_ERR, "sysctl(kern.boottime): %m"); 227 exit(1); 228 } 229 230 stats_all.s2.boottime.tv_sec = btm.tv_sec; 231 stats_all.s2.boottime.tv_usec = btm.tv_usec; 232 233 234 #ifdef DEBUG 235 fprintf(stderr, "%d %d %d %d\n", stats_all.s1.cp_time[0], 236 stats_all.s1.cp_time[1], stats_all.s1.cp_time[2], stats_all.s1.cp_time[3]); 237 #endif 238 239 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 240 syslog(LOG_ERR, "sysctlbyname: vm.vmmeter"); 241 exit(1); 242 } 243 stats_all.s1.v_pgpgin = vmm.v_vnodepgsin; 244 stats_all.s1.v_pgpgout = vmm.v_vnodepgsout; 245 stats_all.s1.v_pswpin = vmm.v_swappgsin; 246 stats_all.s1.v_pswpout = vmm.v_swappgsout; 247 stats_all.s1.v_intr = vmm.v_intr; 248 gettimeofday(&tm, NULL); 249 stats_all.s1.v_intr -= hz*(tm.tv_sec - btm.tv_sec) + 250 hz*(tm.tv_usec - btm.tv_usec)/1000000; 251 stats_all.s2.v_swtch = vmm.v_swtch; 252 253 /* update disk transfers */ 254 updatexfers(RSTAT_DK_NDRIVE, stats_all.s1.dk_xfer); 255 256 mib[0] = CTL_NET; 257 mib[1] = PF_LINK; 258 mib[2] = NETLINK_GENERIC; 259 mib[3] = IFMIB_SYSTEM; 260 mib[4] = IFMIB_IFCOUNT; 261 len = sizeof ifcount; 262 if (sysctl(mib, 5, &ifcount, &len, 0, 0) < 0) { 263 syslog(LOG_ERR, "sysctl(net.link.generic.system.ifcount): %m"); 264 exit(1); 265 } 266 267 stats_all.s1.if_ipackets = 0; 268 stats_all.s1.if_opackets = 0; 269 stats_all.s1.if_ierrors = 0; 270 stats_all.s1.if_oerrors = 0; 271 stats_all.s1.if_collisions = 0; 272 for (i = 1; i <= ifcount; i++) { 273 len = sizeof ifmd; 274 mib[3] = IFMIB_IFDATA; 275 mib[4] = i; 276 mib[5] = IFDATA_GENERAL; 277 if (sysctl(mib, 6, &ifmd, &len, 0, 0) < 0) { 278 syslog(LOG_ERR, "sysctl(net.link.ifdata.%d.general)" 279 ": %m", i); 280 exit(1); 281 } 282 283 stats_all.s1.if_ipackets += ifmd.ifmd_data.ifi_ipackets; 284 stats_all.s1.if_opackets += ifmd.ifmd_data.ifi_opackets; 285 stats_all.s1.if_ierrors += ifmd.ifmd_data.ifi_ierrors; 286 stats_all.s1.if_oerrors += ifmd.ifmd_data.ifi_oerrors; 287 stats_all.s1.if_collisions += ifmd.ifmd_data.ifi_collisions; 288 } 289 gettimeofday((struct timeval *)&stats_all.s3.curtime, NULL); 290 alarm(1); 291 } 292 293 /* 294 * returns true if have a disk 295 */ 296 int 297 haveadisk() 298 { 299 register int i; 300 struct statinfo stats; 301 int num_devices, retval = 0; 302 303 if ((num_devices = getnumdevs()) < 0) { 304 syslog(LOG_ERR, "rstatd: can't get number of devices: %s", 305 devstat_errbuf); 306 exit(1); 307 } 308 309 if (checkversion() < 0) { 310 syslog(LOG_ERR, "rstatd: %s", devstat_errbuf); 311 exit(1); 312 } 313 314 stats.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 315 bzero(stats.dinfo, sizeof(struct devinfo)); 316 317 if (getdevs(&stats) == -1) { 318 syslog(LOG_ERR, "rstatd: can't get device list: %s", 319 devstat_errbuf); 320 exit(1); 321 } 322 for (i = 0; i < stats.dinfo->numdevs; i++) { 323 if (((stats.dinfo->devices[i].device_type 324 & DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_DIRECT) 325 && ((stats.dinfo->devices[i].device_type 326 & DEVSTAT_TYPE_PASS) == 0)) { 327 retval = 1; 328 break; 329 } 330 } 331 332 if (stats.dinfo->mem_ptr) 333 free(stats.dinfo->mem_ptr); 334 335 free(stats.dinfo); 336 return(retval); 337 } 338 339 void 340 updatexfers(numdevs, devs) 341 int numdevs, *devs; 342 { 343 register int i, j, t; 344 struct statinfo stats; 345 int num_devices = 0; 346 u_int64_t total_transfers; 347 348 if ((num_devices = getnumdevs()) < 0) { 349 syslog(LOG_ERR, "rstatd: can't get number of devices: %s", 350 devstat_errbuf); 351 exit(1); 352 } 353 354 if (checkversion() < 0) { 355 syslog(LOG_ERR, "rstatd: %s", devstat_errbuf); 356 exit(1); 357 } 358 359 stats.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 360 bzero(stats.dinfo, sizeof(struct devinfo)); 361 362 if (getdevs(&stats) == -1) { 363 syslog(LOG_ERR, "rstatd: can't get device list: %s", 364 devstat_errbuf); 365 exit(1); 366 } 367 368 for (i = 0, j = 0; i < stats.dinfo->numdevs && j < numdevs; i++) { 369 if (((stats.dinfo->devices[i].device_type 370 & DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_DIRECT) 371 && ((stats.dinfo->devices[i].device_type 372 & DEVSTAT_TYPE_PASS) == 0)) { 373 total_transfers = stats.dinfo->devices[i].num_reads + 374 stats.dinfo->devices[i].num_writes + 375 stats.dinfo->devices[i].num_other; 376 /* 377 * XXX KDM If the total transfers for this device 378 * are greater than the amount we can fit in a 379 * signed integer, just set them to the maximum 380 * amount we can fit in a signed integer. I have a 381 * feeling that the rstat protocol assumes 32-bit 382 * integers, so this could well break on a 64-bit 383 * architecture like the Alpha. 384 */ 385 if (total_transfers > INT_MAX) 386 t = INT_MAX; 387 else 388 t = total_transfers; 389 devs[j] = t; 390 j++; 391 } 392 } 393 394 if (stats.dinfo->mem_ptr) 395 free(stats.dinfo->mem_ptr); 396 397 free(stats.dinfo); 398 } 399 400 void 401 rstat_service(rqstp, transp) 402 struct svc_req *rqstp; 403 SVCXPRT *transp; 404 { 405 union { 406 int fill; 407 } argument; 408 char *result; 409 bool_t (*xdr_argument)(), (*xdr_result)(); 410 char *(*local)(); 411 412 switch (rqstp->rq_proc) { 413 case NULLPROC: 414 (void)svc_sendreply(transp, (xdrproc_t)xdr_void, NULL); 415 goto leave; 416 417 case RSTATPROC_STATS: 418 xdr_argument = xdr_void; 419 xdr_result = xdr_statstime; 420 switch (rqstp->rq_vers) { 421 case RSTATVERS_ORIG: 422 local = (char *(*)()) rstatproc_stats_1_svc; 423 break; 424 case RSTATVERS_SWTCH: 425 local = (char *(*)()) rstatproc_stats_2_svc; 426 break; 427 case RSTATVERS_TIME: 428 local = (char *(*)()) rstatproc_stats_3_svc; 429 break; 430 default: 431 svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME); 432 goto leave; 433 /*NOTREACHED*/ 434 } 435 break; 436 437 case RSTATPROC_HAVEDISK: 438 xdr_argument = xdr_void; 439 xdr_result = xdr_u_int; 440 switch (rqstp->rq_vers) { 441 case RSTATVERS_ORIG: 442 local = (char *(*)()) rstatproc_havedisk_1_svc; 443 break; 444 case RSTATVERS_SWTCH: 445 local = (char *(*)()) rstatproc_havedisk_2_svc; 446 break; 447 case RSTATVERS_TIME: 448 local = (char *(*)()) rstatproc_havedisk_3_svc; 449 break; 450 default: 451 svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME); 452 goto leave; 453 /*NOTREACHED*/ 454 } 455 break; 456 457 default: 458 svcerr_noproc(transp); 459 goto leave; 460 } 461 bzero((char *)&argument, sizeof(argument)); 462 if (!svc_getargs(transp, (xdrproc_t)xdr_argument, (caddr_t)&argument)) { 463 svcerr_decode(transp); 464 goto leave; 465 } 466 result = (*local)(&argument, rqstp); 467 if (result != NULL && 468 !svc_sendreply(transp, (xdrproc_t)xdr_result, result)) { 469 svcerr_systemerr(transp); 470 } 471 if (!svc_freeargs(transp, (xdrproc_t)xdr_argument, (caddr_t)&argument)) 472 errx(1, "unable to free arguments"); 473 leave: 474 if (from_inetd) 475 exit(0); 476 } 477