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 #endif 36 37 /* 38 * rstat service: built with rstat.x and derived from rpc.rstatd.c 39 * 40 * Copyright (c) 1984 by Sun Microsystems, Inc. 41 */ 42 43 #include <sys/types.h> 44 #include <sys/socket.h> 45 #include <sys/sysctl.h> 46 #include <sys/time.h> 47 #include <sys/resource.h> 48 #include <sys/param.h> 49 50 #include <err.h> 51 #include <errno.h> 52 #include <fcntl.h> 53 #include <limits.h> 54 #include <signal.h> 55 #include <stdio.h> 56 #include <stdlib.h> 57 #include <string.h> 58 #include <syslog.h> 59 #include <unistd.h> 60 #include <devstat.h> 61 62 #include <net/if.h> 63 #include <net/if_mib.h> 64 65 #undef FSHIFT /* Use protocol's shift and scale values */ 66 #undef FSCALE 67 #undef if_ipackets 68 #undef if_ierrors 69 #undef if_opackets 70 #undef if_oerrors 71 #undef if_collisions 72 #include <rpcsvc/rstat.h> 73 74 int haveadisk(void); 75 void updatexfers(int, int *); 76 int stats_service(void); 77 78 extern int from_inetd; 79 int sincelastreq = 0; /* number of alarms since last request */ 80 extern int closedown; 81 82 union { 83 struct stats s1; 84 struct statsswtch s2; 85 struct statstime s3; 86 } stats_all; 87 88 void updatestat(); 89 static int stat_is_init = 0; 90 91 static int cp_time_xlat[RSTAT_CPUSTATES] = { CP_USER, CP_NICE, CP_SYS, 92 CP_IDLE }; 93 static long bsd_cp_time[CPUSTATES]; 94 95 96 #ifndef FSCALE 97 #define FSCALE (1 << 8) 98 #endif 99 100 void 101 stat_init(void) 102 { 103 stat_is_init = 1; 104 alarm(0); 105 updatestat(); 106 (void) signal(SIGALRM, updatestat); 107 alarm(1); 108 } 109 110 statstime * 111 rstatproc_stats_3_svc(void *argp, struct svc_req *rqstp) 112 { 113 if (! stat_is_init) 114 stat_init(); 115 sincelastreq = 0; 116 return(&stats_all.s3); 117 } 118 119 statsswtch * 120 rstatproc_stats_2_svc(void *argp, struct svc_req *rqstp) 121 { 122 if (! stat_is_init) 123 stat_init(); 124 sincelastreq = 0; 125 return(&stats_all.s2); 126 } 127 128 stats * 129 rstatproc_stats_1_svc(void *argp, 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(void *argp, 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(void *argp, struct svc_req *rqstp) 151 { 152 return(rstatproc_havedisk_3_svc(argp, rqstp)); 153 } 154 155 u_int * 156 rstatproc_havedisk_1_svc(void *argp, struct svc_req *rqstp) 157 { 158 return(rstatproc_havedisk_3_svc(argp, rqstp)); 159 } 160 161 void 162 updatestat(void) 163 { 164 int i, hz; 165 struct clockinfo clockrate; 166 struct ifmibdata ifmd; 167 double avrun[3]; 168 struct timeval tm, btm; 169 int mib[6]; 170 size_t len; 171 uint64_t val; 172 int ifcount; 173 174 #ifdef DEBUG 175 fprintf(stderr, "entering updatestat\n"); 176 #endif 177 if (sincelastreq >= closedown) { 178 #ifdef DEBUG 179 fprintf(stderr, "about to closedown\n"); 180 #endif 181 if (from_inetd) 182 exit(0); 183 else { 184 stat_is_init = 0; 185 return; 186 } 187 } 188 sincelastreq++; 189 190 mib[0] = CTL_KERN; 191 mib[1] = KERN_CLOCKRATE; 192 len = sizeof clockrate; 193 if (sysctl(mib, 2, &clockrate, &len, 0, 0) < 0) { 194 syslog(LOG_ERR, "sysctl(kern.clockrate): %m"); 195 exit(1); 196 } 197 hz = clockrate.hz; 198 199 len = sizeof(bsd_cp_time); 200 if (sysctlbyname("kern.cp_time", bsd_cp_time, &len, 0, 0) < 0) { 201 syslog(LOG_ERR, "sysctl(kern.cp_time): %m"); 202 exit(1); 203 } 204 for(i = 0; i < RSTAT_CPUSTATES ; i++) 205 stats_all.s1.cp_time[i] = bsd_cp_time[cp_time_xlat[i]]; 206 207 (void)getloadavg(avrun, sizeof(avrun) / sizeof(avrun[0])); 208 209 stats_all.s2.avenrun[0] = avrun[0] * FSCALE; 210 stats_all.s2.avenrun[1] = avrun[1] * FSCALE; 211 stats_all.s2.avenrun[2] = avrun[2] * FSCALE; 212 213 mib[0] = CTL_KERN; 214 mib[1] = KERN_BOOTTIME; 215 len = sizeof btm; 216 if (sysctl(mib, 2, &btm, &len, 0, 0) < 0) { 217 syslog(LOG_ERR, "sysctl(kern.boottime): %m"); 218 exit(1); 219 } 220 221 stats_all.s2.boottime.tv_sec = btm.tv_sec; 222 stats_all.s2.boottime.tv_usec = btm.tv_usec; 223 224 225 #ifdef DEBUG 226 fprintf(stderr, "%d %d %d %d\n", stats_all.s1.cp_time[0], 227 stats_all.s1.cp_time[1], stats_all.s1.cp_time[2], stats_all.s1.cp_time[3]); 228 #endif 229 230 #define FETCH_CNT(stat, cnt) do { \ 231 len = sizeof(uint64_t); \ 232 if (sysctlbyname("vm.stats." #cnt , &val, &len, NULL, 0) < 0) { \ 233 syslog(LOG_ERR, "sysctl(vm.stats." #cnt "): %m"); \ 234 exit(1); \ 235 } \ 236 stat = val; \ 237 } while (0) 238 239 FETCH_CNT(stats_all.s1.v_pgpgin, vm.v_vnodepgsin); 240 FETCH_CNT(stats_all.s1.v_pgpgout, vm.v_vnodepgsout); 241 FETCH_CNT(stats_all.s1.v_pswpin, vm.v_swappgsin); 242 FETCH_CNT(stats_all.s1.v_pswpout, vm.v_swappgsout); 243 FETCH_CNT(stats_all.s1.v_intr, sys.v_intr); 244 FETCH_CNT(stats_all.s2.v_swtch, sys.v_swtch); 245 (void)gettimeofday(&tm, NULL); 246 stats_all.s1.v_intr -= hz*(tm.tv_sec - btm.tv_sec) + 247 hz*(tm.tv_usec - btm.tv_usec)/1000000; 248 249 /* update disk transfers */ 250 updatexfers(RSTAT_DK_NDRIVE, stats_all.s1.dk_xfer); 251 252 mib[0] = CTL_NET; 253 mib[1] = PF_LINK; 254 mib[2] = NETLINK_GENERIC; 255 mib[3] = IFMIB_SYSTEM; 256 mib[4] = IFMIB_IFCOUNT; 257 len = sizeof ifcount; 258 if (sysctl(mib, 5, &ifcount, &len, 0, 0) < 0) { 259 syslog(LOG_ERR, "sysctl(net.link.generic.system.ifcount): %m"); 260 exit(1); 261 } 262 263 stats_all.s1.if_ipackets = 0; 264 stats_all.s1.if_opackets = 0; 265 stats_all.s1.if_ierrors = 0; 266 stats_all.s1.if_oerrors = 0; 267 stats_all.s1.if_collisions = 0; 268 for (i = 1; i <= ifcount; i++) { 269 len = sizeof ifmd; 270 mib[3] = IFMIB_IFDATA; 271 mib[4] = i; 272 mib[5] = IFDATA_GENERAL; 273 if (sysctl(mib, 6, &ifmd, &len, 0, 0) < 0) { 274 if (errno == ENOENT) 275 continue; 276 277 syslog(LOG_ERR, "sysctl(net.link.ifdata.%d.general)" 278 ": %m", i); 279 exit(1); 280 } 281 282 stats_all.s1.if_ipackets += ifmd.ifmd_data.ifi_ipackets; 283 stats_all.s1.if_opackets += ifmd.ifmd_data.ifi_opackets; 284 stats_all.s1.if_ierrors += ifmd.ifmd_data.ifi_ierrors; 285 stats_all.s1.if_oerrors += ifmd.ifmd_data.ifi_oerrors; 286 stats_all.s1.if_collisions += ifmd.ifmd_data.ifi_collisions; 287 } 288 (void)gettimeofday(&tm, NULL); 289 stats_all.s3.curtime.tv_sec = tm.tv_sec; 290 stats_all.s3.curtime.tv_usec = tm.tv_usec; 291 alarm(1); 292 } 293 294 /* 295 * returns true if have a disk 296 */ 297 int 298 haveadisk(void) 299 { 300 register int i; 301 struct statinfo stats; 302 int num_devices, retval = 0; 303 304 if ((num_devices = devstat_getnumdevs(NULL)) < 0) { 305 syslog(LOG_ERR, "rstatd: can't get number of devices: %s", 306 devstat_errbuf); 307 exit(1); 308 } 309 310 if (devstat_checkversion(NULL) < 0) { 311 syslog(LOG_ERR, "rstatd: %s", devstat_errbuf); 312 exit(1); 313 } 314 315 stats.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 316 bzero(stats.dinfo, sizeof(struct devinfo)); 317 318 if (devstat_getdevs(NULL, &stats) == -1) { 319 syslog(LOG_ERR, "rstatd: can't get device list: %s", 320 devstat_errbuf); 321 exit(1); 322 } 323 for (i = 0; i < stats.dinfo->numdevs; i++) { 324 if (((stats.dinfo->devices[i].device_type 325 & DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_DIRECT) 326 && ((stats.dinfo->devices[i].device_type 327 & DEVSTAT_TYPE_PASS) == 0)) { 328 retval = 1; 329 break; 330 } 331 } 332 333 if (stats.dinfo->mem_ptr) 334 free(stats.dinfo->mem_ptr); 335 336 free(stats.dinfo); 337 return(retval); 338 } 339 340 void 341 updatexfers(int numdevs, int *devs) 342 { 343 register int i, j, k, t; 344 struct statinfo stats; 345 int num_devices = 0; 346 u_int64_t total_transfers; 347 348 if ((num_devices = devstat_getnumdevs(NULL)) < 0) { 349 syslog(LOG_ERR, "rstatd: can't get number of devices: %s", 350 devstat_errbuf); 351 exit(1); 352 } 353 354 if (devstat_checkversion(NULL) < 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 (devstat_getdevs(NULL, &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 = 0; 374 for (k = 0; k < DEVSTAT_N_TRANS_FLAGS; k++) 375 total_transfers += 376 stats.dinfo->devices[i].operations[k]; 377 /* 378 * XXX KDM If the total transfers for this device 379 * are greater than the amount we can fit in a 380 * signed integer, just set them to the maximum 381 * amount we can fit in a signed integer. I have a 382 * feeling that the rstat protocol assumes 32-bit 383 * integers, so this could well break on a 64-bit 384 * architecture like the Alpha. 385 */ 386 if (total_transfers > INT_MAX) 387 t = INT_MAX; 388 else 389 t = total_transfers; 390 devs[j] = t; 391 j++; 392 } 393 } 394 395 if (stats.dinfo->mem_ptr) 396 free(stats.dinfo->mem_ptr); 397 398 free(stats.dinfo); 399 } 400 401 void 402 rstat_service(struct svc_req *rqstp, SVCXPRT *transp) 403 { 404 union { 405 int fill; 406 } argument; 407 void *result; 408 xdrproc_t xdr_argument, xdr_result; 409 typedef void *(svc_cb)(void *arg, struct svc_req *rqstp); 410 svc_cb *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 = (xdrproc_t)xdr_void; 419 xdr_result = (xdrproc_t)xdr_statstime; 420 switch (rqstp->rq_vers) { 421 case RSTATVERS_ORIG: 422 local = (svc_cb *)rstatproc_stats_1_svc; 423 break; 424 case RSTATVERS_SWTCH: 425 local = (svc_cb *)rstatproc_stats_2_svc; 426 break; 427 case RSTATVERS_TIME: 428 local = (svc_cb *)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 = (xdrproc_t)xdr_void; 439 xdr_result = (xdrproc_t)xdr_u_int; 440 switch (rqstp->rq_vers) { 441 case RSTATVERS_ORIG: 442 local = (svc_cb *)rstatproc_havedisk_1_svc; 443 break; 444 case RSTATVERS_SWTCH: 445 local = (svc_cb *)rstatproc_havedisk_2_svc; 446 break; 447 case RSTATVERS_TIME: 448 local = (svc_cb *)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, xdr_argument, &argument)) { 463 svcerr_decode(transp); 464 goto leave; 465 } 466 result = (*local)(&argument, rqstp); 467 if (result != NULL && 468 !svc_sendreply(transp, xdr_result, result)) { 469 svcerr_systemerr(transp); 470 } 471 if (!svc_freeargs(transp, xdr_argument, &argument)) 472 errx(1, "unable to free arguments"); 473 leave: 474 if (from_inetd) 475 exit(0); 476 } 477