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/socket.h> 47 #include <sys/sysctl.h> 48 #include <sys/time.h> 49 #include <sys/resource.h> 50 #include <sys/param.h> 51 52 #include <err.h> 53 #include <errno.h> 54 #include <fcntl.h> 55 #include <limits.h> 56 #include <signal.h> 57 #include <stdio.h> 58 #include <stdlib.h> 59 #include <string.h> 60 #include <syslog.h> 61 #include <unistd.h> 62 #include <devstat.h> 63 64 #include <net/if.h> 65 #include <net/if_mib.h> 66 67 #undef FSHIFT /* Use protocol's shift and scale values */ 68 #undef FSCALE 69 #undef if_ipackets 70 #undef if_ierrors 71 #undef if_opackets 72 #undef if_oerrors 73 #undef if_collisions 74 #include <rpcsvc/rstat.h> 75 76 int haveadisk(void); 77 void updatexfers(int, int *); 78 int stats_service(void); 79 80 extern int from_inetd; 81 int sincelastreq = 0; /* number of alarms since last request */ 82 extern int closedown; 83 84 union { 85 struct stats s1; 86 struct statsswtch s2; 87 struct statstime s3; 88 } stats_all; 89 90 void updatestat(); 91 static int stat_is_init = 0; 92 93 static int cp_time_xlat[RSTAT_CPUSTATES] = { CP_USER, CP_NICE, CP_SYS, 94 CP_IDLE }; 95 static long bsd_cp_time[CPUSTATES]; 96 97 98 #ifndef FSCALE 99 #define FSCALE (1 << 8) 100 #endif 101 102 void 103 stat_init(void) 104 { 105 stat_is_init = 1; 106 alarm(0); 107 updatestat(); 108 (void) signal(SIGALRM, updatestat); 109 alarm(1); 110 } 111 112 statstime * 113 rstatproc_stats_3_svc(void *argp, struct svc_req *rqstp) 114 { 115 if (! stat_is_init) 116 stat_init(); 117 sincelastreq = 0; 118 return(&stats_all.s3); 119 } 120 121 statsswtch * 122 rstatproc_stats_2_svc(void *argp, struct svc_req *rqstp) 123 { 124 if (! stat_is_init) 125 stat_init(); 126 sincelastreq = 0; 127 return(&stats_all.s2); 128 } 129 130 stats * 131 rstatproc_stats_1_svc(void *argp, struct svc_req *rqstp) 132 { 133 if (! stat_is_init) 134 stat_init(); 135 sincelastreq = 0; 136 return(&stats_all.s1); 137 } 138 139 u_int * 140 rstatproc_havedisk_3_svc(void *argp, 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(void *argp, struct svc_req *rqstp) 153 { 154 return(rstatproc_havedisk_3_svc(argp, rqstp)); 155 } 156 157 u_int * 158 rstatproc_havedisk_1_svc(void *argp, struct svc_req *rqstp) 159 { 160 return(rstatproc_havedisk_3_svc(argp, rqstp)); 161 } 162 163 void 164 updatestat(void) 165 { 166 int i, hz; 167 struct clockinfo clockrate; 168 struct ifmibdata ifmd; 169 double avrun[3]; 170 struct timeval tm, btm; 171 int mib[6]; 172 size_t len; 173 uint64_t val; 174 int ifcount; 175 176 #ifdef DEBUG 177 fprintf(stderr, "entering updatestat\n"); 178 #endif 179 if (sincelastreq >= closedown) { 180 #ifdef DEBUG 181 fprintf(stderr, "about to closedown\n"); 182 #endif 183 if (from_inetd) 184 exit(0); 185 else { 186 stat_is_init = 0; 187 return; 188 } 189 } 190 sincelastreq++; 191 192 mib[0] = CTL_KERN; 193 mib[1] = KERN_CLOCKRATE; 194 len = sizeof clockrate; 195 if (sysctl(mib, 2, &clockrate, &len, 0, 0) < 0) { 196 syslog(LOG_ERR, "sysctl(kern.clockrate): %m"); 197 exit(1); 198 } 199 hz = clockrate.hz; 200 201 len = sizeof(bsd_cp_time); 202 if (sysctlbyname("kern.cp_time", bsd_cp_time, &len, 0, 0) < 0) { 203 syslog(LOG_ERR, "sysctl(kern.cp_time): %m"); 204 exit(1); 205 } 206 for(i = 0; i < RSTAT_CPUSTATES ; i++) 207 stats_all.s1.cp_time[i] = bsd_cp_time[cp_time_xlat[i]]; 208 209 (void)getloadavg(avrun, sizeof(avrun) / sizeof(avrun[0])); 210 211 stats_all.s2.avenrun[0] = avrun[0] * FSCALE; 212 stats_all.s2.avenrun[1] = avrun[1] * FSCALE; 213 stats_all.s2.avenrun[2] = avrun[2] * FSCALE; 214 215 mib[0] = CTL_KERN; 216 mib[1] = KERN_BOOTTIME; 217 len = sizeof btm; 218 if (sysctl(mib, 2, &btm, &len, 0, 0) < 0) { 219 syslog(LOG_ERR, "sysctl(kern.boottime): %m"); 220 exit(1); 221 } 222 223 stats_all.s2.boottime.tv_sec = btm.tv_sec; 224 stats_all.s2.boottime.tv_usec = btm.tv_usec; 225 226 227 #ifdef DEBUG 228 fprintf(stderr, "%d %d %d %d\n", stats_all.s1.cp_time[0], 229 stats_all.s1.cp_time[1], stats_all.s1.cp_time[2], stats_all.s1.cp_time[3]); 230 #endif 231 232 #define FETCH_CNT(stat, cnt) do { \ 233 len = sizeof(uint64_t); \ 234 if (sysctlbyname("vm.stats." #cnt , &val, &len, NULL, 0) < 0) { \ 235 syslog(LOG_ERR, "sysctl(vm.stats." #cnt "): %m"); \ 236 exit(1); \ 237 } \ 238 stat = val; \ 239 } while (0) 240 241 FETCH_CNT(stats_all.s1.v_pgpgin, vm.v_vnodepgsin); 242 FETCH_CNT(stats_all.s1.v_pgpgout, vm.v_vnodepgsout); 243 FETCH_CNT(stats_all.s1.v_pswpin, vm.v_swappgsin); 244 FETCH_CNT(stats_all.s1.v_pswpout, vm.v_swappgsout); 245 FETCH_CNT(stats_all.s1.v_intr, sys.v_intr); 246 FETCH_CNT(stats_all.s2.v_swtch, sys.v_swtch); 247 (void)gettimeofday(&tm, NULL); 248 stats_all.s1.v_intr -= hz*(tm.tv_sec - btm.tv_sec) + 249 hz*(tm.tv_usec - btm.tv_usec)/1000000; 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 if (errno == ENOENT) 277 continue; 278 279 syslog(LOG_ERR, "sysctl(net.link.ifdata.%d.general)" 280 ": %m", i); 281 exit(1); 282 } 283 284 stats_all.s1.if_ipackets += ifmd.ifmd_data.ifi_ipackets; 285 stats_all.s1.if_opackets += ifmd.ifmd_data.ifi_opackets; 286 stats_all.s1.if_ierrors += ifmd.ifmd_data.ifi_ierrors; 287 stats_all.s1.if_oerrors += ifmd.ifmd_data.ifi_oerrors; 288 stats_all.s1.if_collisions += ifmd.ifmd_data.ifi_collisions; 289 } 290 (void)gettimeofday(&tm, NULL); 291 stats_all.s3.curtime.tv_sec = tm.tv_sec; 292 stats_all.s3.curtime.tv_usec = tm.tv_usec; 293 alarm(1); 294 } 295 296 /* 297 * returns true if have a disk 298 */ 299 int 300 haveadisk(void) 301 { 302 register int i; 303 struct statinfo stats; 304 int num_devices, retval = 0; 305 306 if ((num_devices = devstat_getnumdevs(NULL)) < 0) { 307 syslog(LOG_ERR, "rstatd: can't get number of devices: %s", 308 devstat_errbuf); 309 exit(1); 310 } 311 312 if (devstat_checkversion(NULL) < 0) { 313 syslog(LOG_ERR, "rstatd: %s", devstat_errbuf); 314 exit(1); 315 } 316 317 stats.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 318 bzero(stats.dinfo, sizeof(struct devinfo)); 319 320 if (devstat_getdevs(NULL, &stats) == -1) { 321 syslog(LOG_ERR, "rstatd: can't get device list: %s", 322 devstat_errbuf); 323 exit(1); 324 } 325 for (i = 0; i < stats.dinfo->numdevs; i++) { 326 if (((stats.dinfo->devices[i].device_type 327 & DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_DIRECT) 328 && ((stats.dinfo->devices[i].device_type 329 & DEVSTAT_TYPE_PASS) == 0)) { 330 retval = 1; 331 break; 332 } 333 } 334 335 if (stats.dinfo->mem_ptr) 336 free(stats.dinfo->mem_ptr); 337 338 free(stats.dinfo); 339 return(retval); 340 } 341 342 void 343 updatexfers(int numdevs, int *devs) 344 { 345 register int i, j, k, t; 346 struct statinfo stats; 347 int num_devices = 0; 348 u_int64_t total_transfers; 349 350 if ((num_devices = devstat_getnumdevs(NULL)) < 0) { 351 syslog(LOG_ERR, "rstatd: can't get number of devices: %s", 352 devstat_errbuf); 353 exit(1); 354 } 355 356 if (devstat_checkversion(NULL) < 0) { 357 syslog(LOG_ERR, "rstatd: %s", devstat_errbuf); 358 exit(1); 359 } 360 361 stats.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 362 bzero(stats.dinfo, sizeof(struct devinfo)); 363 364 if (devstat_getdevs(NULL, &stats) == -1) { 365 syslog(LOG_ERR, "rstatd: can't get device list: %s", 366 devstat_errbuf); 367 exit(1); 368 } 369 370 for (i = 0, j = 0; i < stats.dinfo->numdevs && j < numdevs; i++) { 371 if (((stats.dinfo->devices[i].device_type 372 & DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_DIRECT) 373 && ((stats.dinfo->devices[i].device_type 374 & DEVSTAT_TYPE_PASS) == 0)) { 375 total_transfers = 0; 376 for (k = 0; k < DEVSTAT_N_TRANS_FLAGS; k++) 377 total_transfers += 378 stats.dinfo->devices[i].operations[k]; 379 /* 380 * XXX KDM If the total transfers for this device 381 * are greater than the amount we can fit in a 382 * signed integer, just set them to the maximum 383 * amount we can fit in a signed integer. I have a 384 * feeling that the rstat protocol assumes 32-bit 385 * integers, so this could well break on a 64-bit 386 * architecture like the Alpha. 387 */ 388 if (total_transfers > INT_MAX) 389 t = INT_MAX; 390 else 391 t = total_transfers; 392 devs[j] = t; 393 j++; 394 } 395 } 396 397 if (stats.dinfo->mem_ptr) 398 free(stats.dinfo->mem_ptr); 399 400 free(stats.dinfo); 401 } 402 403 void 404 rstat_service(struct svc_req *rqstp, SVCXPRT *transp) 405 { 406 union { 407 int fill; 408 } argument; 409 void *result; 410 xdrproc_t xdr_argument, xdr_result; 411 typedef void *(svc_cb)(void *arg, struct svc_req *rqstp); 412 svc_cb *local; 413 414 switch (rqstp->rq_proc) { 415 case NULLPROC: 416 (void)svc_sendreply(transp, (xdrproc_t)xdr_void, NULL); 417 goto leave; 418 419 case RSTATPROC_STATS: 420 xdr_argument = (xdrproc_t)xdr_void; 421 xdr_result = (xdrproc_t)xdr_statstime; 422 switch (rqstp->rq_vers) { 423 case RSTATVERS_ORIG: 424 local = (svc_cb *)rstatproc_stats_1_svc; 425 break; 426 case RSTATVERS_SWTCH: 427 local = (svc_cb *)rstatproc_stats_2_svc; 428 break; 429 case RSTATVERS_TIME: 430 local = (svc_cb *)rstatproc_stats_3_svc; 431 break; 432 default: 433 svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME); 434 goto leave; 435 /*NOTREACHED*/ 436 } 437 break; 438 439 case RSTATPROC_HAVEDISK: 440 xdr_argument = (xdrproc_t)xdr_void; 441 xdr_result = (xdrproc_t)xdr_u_int; 442 switch (rqstp->rq_vers) { 443 case RSTATVERS_ORIG: 444 local = (svc_cb *)rstatproc_havedisk_1_svc; 445 break; 446 case RSTATVERS_SWTCH: 447 local = (svc_cb *)rstatproc_havedisk_2_svc; 448 break; 449 case RSTATVERS_TIME: 450 local = (svc_cb *)rstatproc_havedisk_3_svc; 451 break; 452 default: 453 svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME); 454 goto leave; 455 /*NOTREACHED*/ 456 } 457 break; 458 459 default: 460 svcerr_noproc(transp); 461 goto leave; 462 } 463 bzero((char *)&argument, sizeof(argument)); 464 if (!svc_getargs(transp, xdr_argument, &argument)) { 465 svcerr_decode(transp); 466 goto leave; 467 } 468 result = (*local)(&argument, rqstp); 469 if (result != NULL && 470 !svc_sendreply(transp, xdr_result, result)) { 471 svcerr_systemerr(transp); 472 } 473 if (!svc_freeargs(transp, xdr_argument, &argument)) 474 errx(1, "unable to free arguments"); 475 leave: 476 if (from_inetd) 477 exit(0); 478 } 479