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/vmmeter.h> 51 #include <sys/param.h> 52 53 #include <err.h> 54 #include <errno.h> 55 #include <fcntl.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 int haveadisk(void); 78 void updatexfers(int, int *); 79 int stats_service(void); 80 81 extern int from_inetd; 82 int sincelastreq = 0; /* number of alarms since last request */ 83 extern int closedown; 84 85 union { 86 struct stats s1; 87 struct statsswtch s2; 88 struct statstime s3; 89 } stats_all; 90 91 void updatestat(); 92 static int stat_is_init = 0; 93 94 static int cp_time_xlat[RSTAT_CPUSTATES] = { CP_USER, CP_NICE, CP_SYS, 95 CP_IDLE }; 96 static long bsd_cp_time[CPUSTATES]; 97 98 99 #ifndef FSCALE 100 #define FSCALE (1 << 8) 101 #endif 102 103 void 104 stat_init(void) 105 { 106 stat_is_init = 1; 107 alarm(0); 108 updatestat(); 109 (void) signal(SIGALRM, updatestat); 110 alarm(1); 111 } 112 113 statstime * 114 rstatproc_stats_3_svc(void *argp, struct svc_req *rqstp) 115 { 116 if (! stat_is_init) 117 stat_init(); 118 sincelastreq = 0; 119 return(&stats_all.s3); 120 } 121 122 statsswtch * 123 rstatproc_stats_2_svc(void *argp, struct svc_req *rqstp) 124 { 125 if (! stat_is_init) 126 stat_init(); 127 sincelastreq = 0; 128 return(&stats_all.s2); 129 } 130 131 stats * 132 rstatproc_stats_1_svc(void *argp, struct svc_req *rqstp) 133 { 134 if (! stat_is_init) 135 stat_init(); 136 sincelastreq = 0; 137 return(&stats_all.s1); 138 } 139 140 u_int * 141 rstatproc_havedisk_3_svc(void *argp, struct svc_req *rqstp) 142 { 143 static u_int have; 144 145 if (! stat_is_init) 146 stat_init(); 147 sincelastreq = 0; 148 have = haveadisk(); 149 return(&have); 150 } 151 152 u_int * 153 rstatproc_havedisk_2_svc(void *argp, struct svc_req *rqstp) 154 { 155 return(rstatproc_havedisk_3_svc(argp, rqstp)); 156 } 157 158 u_int * 159 rstatproc_havedisk_1_svc(void *argp, struct svc_req *rqstp) 160 { 161 return(rstatproc_havedisk_3_svc(argp, rqstp)); 162 } 163 164 void 165 updatestat(void) 166 { 167 int i, hz; 168 struct clockinfo clockrate; 169 struct vmmeter cnt; 170 struct ifmibdata ifmd; 171 double avrun[3]; 172 struct timeval tm, btm; 173 int mib[6]; 174 size_t len; 175 int ifcount; 176 177 #ifdef DEBUG 178 fprintf(stderr, "entering updatestat\n"); 179 #endif 180 if (sincelastreq >= closedown) { 181 #ifdef DEBUG 182 fprintf(stderr, "about to closedown\n"); 183 #endif 184 if (from_inetd) 185 exit(0); 186 else { 187 stat_is_init = 0; 188 return; 189 } 190 } 191 sincelastreq++; 192 193 mib[0] = CTL_KERN; 194 mib[1] = KERN_CLOCKRATE; 195 len = sizeof clockrate; 196 if (sysctl(mib, 2, &clockrate, &len, 0, 0) < 0) { 197 syslog(LOG_ERR, "sysctl(kern.clockrate): %m"); 198 exit(1); 199 } 200 hz = clockrate.hz; 201 202 len = sizeof(bsd_cp_time); 203 if (sysctlbyname("kern.cp_time", bsd_cp_time, &len, 0, 0) < 0) { 204 syslog(LOG_ERR, "sysctl(kern.cp_time): %m"); 205 exit(1); 206 } 207 for(i = 0; i < RSTAT_CPUSTATES ; i++) 208 stats_all.s1.cp_time[i] = bsd_cp_time[cp_time_xlat[i]]; 209 210 (void)getloadavg(avrun, sizeof(avrun) / sizeof(avrun[0])); 211 212 stats_all.s2.avenrun[0] = avrun[0] * FSCALE; 213 stats_all.s2.avenrun[1] = avrun[1] * FSCALE; 214 stats_all.s2.avenrun[2] = avrun[2] * FSCALE; 215 216 mib[0] = CTL_KERN; 217 mib[1] = KERN_BOOTTIME; 218 len = sizeof btm; 219 if (sysctl(mib, 2, &btm, &len, 0, 0) < 0) { 220 syslog(LOG_ERR, "sysctl(kern.boottime): %m"); 221 exit(1); 222 } 223 224 stats_all.s2.boottime.tv_sec = btm.tv_sec; 225 stats_all.s2.boottime.tv_usec = btm.tv_usec; 226 227 228 #ifdef DEBUG 229 fprintf(stderr, "%d %d %d %d\n", stats_all.s1.cp_time[0], 230 stats_all.s1.cp_time[1], stats_all.s1.cp_time[2], stats_all.s1.cp_time[3]); 231 #endif 232 233 #define FETCH_CNT(stat, cnt) do { \ 234 len = sizeof((stat)); \ 235 if (sysctlbyname("vm.stats." #cnt , &(stat), &len, 0, 0) < 0) { \ 236 syslog(LOG_ERR, "sysctl(vm.stats." #cnt "): %m"); \ 237 exit(1); \ 238 } \ 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 char *result; 410 bool_t (*xdr_argument)(), (*xdr_result)(); 411 char *(*local)(); 412 413 switch (rqstp->rq_proc) { 414 case NULLPROC: 415 (void)svc_sendreply(transp, (xdrproc_t)xdr_void, NULL); 416 goto leave; 417 418 case RSTATPROC_STATS: 419 xdr_argument = xdr_void; 420 xdr_result = xdr_statstime; 421 switch (rqstp->rq_vers) { 422 case RSTATVERS_ORIG: 423 local = (char *(*)()) rstatproc_stats_1_svc; 424 break; 425 case RSTATVERS_SWTCH: 426 local = (char *(*)()) rstatproc_stats_2_svc; 427 break; 428 case RSTATVERS_TIME: 429 local = (char *(*)()) rstatproc_stats_3_svc; 430 break; 431 default: 432 svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME); 433 goto leave; 434 /*NOTREACHED*/ 435 } 436 break; 437 438 case RSTATPROC_HAVEDISK: 439 xdr_argument = xdr_void; 440 xdr_result = xdr_u_int; 441 switch (rqstp->rq_vers) { 442 case RSTATVERS_ORIG: 443 local = (char *(*)()) rstatproc_havedisk_1_svc; 444 break; 445 case RSTATVERS_SWTCH: 446 local = (char *(*)()) rstatproc_havedisk_2_svc; 447 break; 448 case RSTATVERS_TIME: 449 local = (char *(*)()) rstatproc_havedisk_3_svc; 450 break; 451 default: 452 svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME); 453 goto leave; 454 /*NOTREACHED*/ 455 } 456 break; 457 458 default: 459 svcerr_noproc(transp); 460 goto leave; 461 } 462 bzero((char *)&argument, sizeof(argument)); 463 if (!svc_getargs(transp, (xdrproc_t)xdr_argument, &argument)) { 464 svcerr_decode(transp); 465 goto leave; 466 } 467 result = (*local)(&argument, rqstp); 468 if (result != NULL && 469 !svc_sendreply(transp, (xdrproc_t)xdr_result, result)) { 470 svcerr_systemerr(transp); 471 } 472 if (!svc_freeargs(transp, (xdrproc_t)xdr_argument, &argument)) 473 errx(1, "unable to free arguments"); 474 leave: 475 if (from_inetd) 476 exit(0); 477 } 478