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 "$Id: rstat_proc.c,v 1.9 1998/01/07 07:50:59 charnier Exp $"; 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/dkstat.h> 47 #include <sys/socket.h> 48 #include <sys/sysctl.h> 49 #include <sys/time.h> 50 #include <sys/vmmeter.h> 51 52 #include <err.h> 53 #include <fcntl.h> 54 #include <kvm.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 63 #include <net/if.h> 64 #include <net/if_mib.h> 65 66 #undef FSHIFT /* Use protocol's shift and scale values */ 67 #undef FSCALE 68 #undef if_ipackets 69 #undef if_ierrors 70 #undef if_opackets 71 #undef if_oerrors 72 #undef if_collisions 73 #include <rpcsvc/rstat.h> 74 75 struct nlist nl[] = { 76 #define X_CPTIME 0 77 { "_cp_time" }, 78 #define X_CNT 1 79 { "_cnt" }, 80 #define X_DKXFER 2 81 { "_dk_xfer" }, 82 #define X_DKNDRIVE 3 83 { "_dk_ndrive" }, 84 { "" }, 85 }; 86 87 int havedisk __P((void)); 88 void setup __P((void)); 89 int stats_service(); 90 91 extern int from_inetd; 92 int sincelastreq = 0; /* number of alarms since last request */ 93 extern int closedown; 94 95 union { 96 struct stats s1; 97 struct statsswtch s2; 98 struct statstime s3; 99 } stats_all; 100 101 void updatestat(); 102 static stat_is_init = 0; 103 static kvm_t *kd; 104 105 static int cp_time_xlat[RSTAT_CPUSTATES] = { CP_USER, CP_NICE, CP_SYS, 106 CP_IDLE }; 107 static long bsd_cp_time[CPUSTATES]; 108 109 110 #ifndef FSCALE 111 #define FSCALE (1 << 8) 112 #endif 113 114 void 115 stat_init() 116 { 117 stat_is_init = 1; 118 setup(); 119 updatestat(); 120 (void) signal(SIGALRM, updatestat); 121 alarm(1); 122 } 123 124 statstime * 125 rstatproc_stats_3_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.s3); 133 } 134 135 statsswtch * 136 rstatproc_stats_2_svc(argp, rqstp) 137 void *argp; 138 struct svc_req *rqstp; 139 { 140 if (! stat_is_init) 141 stat_init(); 142 sincelastreq = 0; 143 return(&stats_all.s2); 144 } 145 146 stats * 147 rstatproc_stats_1_svc(argp, rqstp) 148 void *argp; 149 struct svc_req *rqstp; 150 { 151 if (! stat_is_init) 152 stat_init(); 153 sincelastreq = 0; 154 return(&stats_all.s1); 155 } 156 157 u_int * 158 rstatproc_havedisk_3_svc(argp, rqstp) 159 void *argp; 160 struct svc_req *rqstp; 161 { 162 static u_int have; 163 164 if (! stat_is_init) 165 stat_init(); 166 sincelastreq = 0; 167 have = havedisk(); 168 return(&have); 169 } 170 171 u_int * 172 rstatproc_havedisk_2_svc(argp, rqstp) 173 void *argp; 174 struct svc_req *rqstp; 175 { 176 return(rstatproc_havedisk_3_svc(argp, rqstp)); 177 } 178 179 u_int * 180 rstatproc_havedisk_1_svc(argp, rqstp) 181 void *argp; 182 struct svc_req *rqstp; 183 { 184 return(rstatproc_havedisk_3_svc(argp, rqstp)); 185 } 186 187 void 188 updatestat() 189 { 190 int i, hz; 191 struct clockinfo clockrate; 192 struct vmmeter cnt; 193 struct ifmibdata ifmd; 194 double avrun[3]; 195 struct timeval tm, btm; 196 int mib[6]; 197 size_t len; 198 int ifcount; 199 200 #ifdef DEBUG 201 fprintf(stderr, "entering updatestat\n"); 202 #endif 203 if (sincelastreq >= closedown) { 204 #ifdef DEBUG 205 fprintf(stderr, "about to closedown\n"); 206 #endif 207 if (from_inetd) 208 exit(0); 209 else { 210 stat_is_init = 0; 211 return; 212 } 213 } 214 sincelastreq++; 215 216 mib[0] = CTL_KERN; 217 mib[1] = KERN_CLOCKRATE; 218 len = sizeof clockrate; 219 if (sysctl(mib, 2, &clockrate, &len, 0, 0) < 0) { 220 syslog(LOG_ERR, "sysctl(kern.clockrate): %m"); 221 exit(1); 222 } 223 hz = clockrate.hz; 224 225 if (kvm_read(kd, (long)nl[X_CPTIME].n_value, (char *)bsd_cp_time, sizeof(bsd_cp_time)) 226 != sizeof(bsd_cp_time)) { 227 syslog(LOG_ERR, "rstat: can't read cp_time from kmem"); 228 exit(1); 229 } 230 for(i = 0; i < RSTAT_CPUSTATES ; i++) 231 stats_all.s1.cp_time[i] = bsd_cp_time[cp_time_xlat[i]]; 232 233 (void)getloadavg(avrun, sizeof(avrun) / sizeof(avrun[0])); 234 235 stats_all.s2.avenrun[0] = avrun[0] * FSCALE; 236 stats_all.s2.avenrun[1] = avrun[1] * FSCALE; 237 stats_all.s2.avenrun[2] = avrun[2] * FSCALE; 238 239 mib[0] = CTL_KERN; 240 mib[1] = KERN_BOOTTIME; 241 len = sizeof btm; 242 if (sysctl(mib, 2, &btm, &len, 0, 0) < 0) { 243 syslog(LOG_ERR, "sysctl(kern.boottime): %m"); 244 exit(1); 245 } 246 247 stats_all.s2.boottime.tv_sec = btm.tv_sec; 248 stats_all.s2.boottime.tv_usec = btm.tv_usec; 249 250 251 #ifdef DEBUG 252 fprintf(stderr, "%d %d %d %d\n", stats_all.s1.cp_time[0], 253 stats_all.s1.cp_time[1], stats_all.s1.cp_time[2], stats_all.s1.cp_time[3]); 254 #endif 255 256 /* XXX - should use sysctl */ 257 if (kvm_read(kd, (long)nl[X_CNT].n_value, (char *)&cnt, sizeof cnt) != sizeof cnt) { 258 syslog(LOG_ERR, "rstat: can't read cnt from kmem"); 259 exit(1); 260 } 261 stats_all.s1.v_pgpgin = cnt.v_vnodepgsin; 262 stats_all.s1.v_pgpgout = cnt.v_vnodepgsout; 263 stats_all.s1.v_pswpin = cnt.v_swappgsin; 264 stats_all.s1.v_pswpout = cnt.v_swappgsout; 265 stats_all.s1.v_intr = cnt.v_intr; 266 gettimeofday(&tm, (struct timezone *) 0); 267 stats_all.s1.v_intr -= hz*(tm.tv_sec - btm.tv_sec) + 268 hz*(tm.tv_usec - btm.tv_usec)/1000000; 269 stats_all.s2.v_swtch = cnt.v_swtch; 270 271 /* XXX - should use sysctl */ 272 if (kvm_read(kd, (long)nl[X_DKXFER].n_value, (char *)stats_all.s1.dk_xfer, sizeof (stats_all.s1.dk_xfer)) 273 != sizeof (stats_all.s1.dk_xfer)) { 274 syslog(LOG_ERR, "rstat: can't read dk_xfer from kmem"); 275 exit(1); 276 } 277 278 mib[0] = CTL_NET; 279 mib[1] = PF_LINK; 280 mib[2] = NETLINK_GENERIC; 281 mib[3] = IFMIB_SYSTEM; 282 mib[4] = IFMIB_IFCOUNT; 283 len = sizeof ifcount; 284 if (sysctl(mib, 5, &ifcount, &len, 0, 0) < 0) { 285 syslog(LOG_ERR, "sysctl(net.link.generic.system.ifcount): %m"); 286 exit(1); 287 } 288 289 stats_all.s1.if_ipackets = 0; 290 stats_all.s1.if_opackets = 0; 291 stats_all.s1.if_ierrors = 0; 292 stats_all.s1.if_oerrors = 0; 293 stats_all.s1.if_collisions = 0; 294 for (i = 1; i <= ifcount; i++) { 295 len = sizeof ifmd; 296 mib[3] = IFMIB_IFDATA; 297 mib[4] = i; 298 mib[5] = IFDATA_GENERAL; 299 if (sysctl(mib, 6, &ifmd, &len, 0, 0) < 0) { 300 syslog(LOG_ERR, "sysctl(net.link.ifdata.%d.general)" 301 ": %m", i); 302 exit(1); 303 } 304 305 stats_all.s1.if_ipackets += ifmd.ifmd_data.ifi_ipackets; 306 stats_all.s1.if_opackets += ifmd.ifmd_data.ifi_opackets; 307 stats_all.s1.if_ierrors += ifmd.ifmd_data.ifi_ierrors; 308 stats_all.s1.if_oerrors += ifmd.ifmd_data.ifi_oerrors; 309 stats_all.s1.if_collisions += ifmd.ifmd_data.ifi_collisions; 310 } 311 gettimeofday((struct timeval *)&stats_all.s3.curtime, 312 (struct timezone *) 0); 313 alarm(1); 314 } 315 316 void 317 setup() 318 { 319 char errbuf[_POSIX2_LINE_MAX]; 320 321 int en; 322 323 if ((kd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, errbuf)) == NULL) { 324 syslog(LOG_ERR, "rpc.rstatd, %s", errbuf); 325 exit(1); 326 } 327 328 if ((en = kvm_nlist(kd, nl)) != 0) { 329 syslog(LOG_ERR, "rstatd: Can't get namelist. %d", en); 330 exit (1); 331 } 332 } 333 334 /* 335 * returns true if have a disk 336 */ 337 int 338 havedisk() 339 { 340 int dk_ndrive; 341 342 if (kvm_nlist(kd, nl) != 0) { 343 syslog(LOG_ERR, "rstatd: can't get namelist.(d)"); 344 exit (1); 345 } 346 347 if (kvm_read(kd, (long)nl[X_DKNDRIVE].n_value, (char *)&dk_ndrive, 348 sizeof dk_ndrive)!= sizeof dk_ndrive) { 349 syslog(LOG_ERR, "rstat: can't read kmem"); 350 exit(1); 351 } 352 return (dk_ndrive != 0); 353 } 354 355 void 356 rstat_service(rqstp, transp) 357 struct svc_req *rqstp; 358 SVCXPRT *transp; 359 { 360 union { 361 int fill; 362 } argument; 363 char *result; 364 bool_t (*xdr_argument)(), (*xdr_result)(); 365 char *(*local)(); 366 367 switch (rqstp->rq_proc) { 368 case NULLPROC: 369 (void)svc_sendreply(transp, xdr_void, (char *)NULL); 370 goto leave; 371 372 case RSTATPROC_STATS: 373 xdr_argument = xdr_void; 374 xdr_result = xdr_statstime; 375 switch (rqstp->rq_vers) { 376 case RSTATVERS_ORIG: 377 local = (char *(*)()) rstatproc_stats_1_svc; 378 break; 379 case RSTATVERS_SWTCH: 380 local = (char *(*)()) rstatproc_stats_2_svc; 381 break; 382 case RSTATVERS_TIME: 383 local = (char *(*)()) rstatproc_stats_3_svc; 384 break; 385 default: 386 svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME); 387 goto leave; 388 /*NOTREACHED*/ 389 } 390 break; 391 392 case RSTATPROC_HAVEDISK: 393 xdr_argument = xdr_void; 394 xdr_result = xdr_u_int; 395 switch (rqstp->rq_vers) { 396 case RSTATVERS_ORIG: 397 local = (char *(*)()) rstatproc_havedisk_1_svc; 398 break; 399 case RSTATVERS_SWTCH: 400 local = (char *(*)()) rstatproc_havedisk_2_svc; 401 break; 402 case RSTATVERS_TIME: 403 local = (char *(*)()) rstatproc_havedisk_3_svc; 404 break; 405 default: 406 svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME); 407 goto leave; 408 /*NOTREACHED*/ 409 } 410 break; 411 412 default: 413 svcerr_noproc(transp); 414 goto leave; 415 } 416 bzero((char *)&argument, sizeof(argument)); 417 if (!svc_getargs(transp, xdr_argument, (caddr_t)&argument)) { 418 svcerr_decode(transp); 419 goto leave; 420 } 421 result = (*local)(&argument, rqstp); 422 if (result != NULL && !svc_sendreply(transp, xdr_result, result)) { 423 svcerr_systemerr(transp); 424 } 425 if (!svc_freeargs(transp, xdr_argument, (caddr_t)&argument)) 426 errx(1, "unable to free arguments"); 427 leave: 428 if (from_inetd) 429 exit(0); 430 } 431