1 /* $OpenBSD: rstat_proc.c,v 1.26 2004/09/15 19:05:35 deraadt Exp $ */ 2 3 /* 4 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 5 * unrestricted use provided that this legend is included on all tape 6 * media and as a part of the software program in whole or part. Users 7 * may copy or modify Sun RPC without charge, but are not authorized 8 * to license or distribute it to anyone else except as part of a product or 9 * program developed by the user. 10 * 11 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 12 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 13 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 14 * 15 * Sun RPC is provided with no support and without any obligation on the 16 * part of Sun Microsystems, Inc. to assist in its use, correction, 17 * modification or enhancement. 18 * 19 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 20 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 21 * OR ANY PART THEREOF. 22 * 23 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 24 * or profits or other special, indirect and consequential damages, even if 25 * Sun has been advised of the possibility of such damages. 26 * 27 * Sun Microsystems, Inc. 28 * 2550 Garcia Avenue 29 * Mountain View, California 94043 30 */ 31 #ifndef lint 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 static char rcsid[] = "$OpenBSD: rstat_proc.c,v 1.26 2004/09/15 19:05:35 deraadt Exp $"; 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/param.h> 44 #include <sys/vmmeter.h> 45 #include <sys/dkstat.h> 46 #include <sys/socket.h> 47 #include <sys/sysctl.h> 48 #include <net/if.h> 49 #include <uvm/uvm_extern.h> 50 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 #include <signal.h> 55 #include <syslog.h> 56 #include <fcntl.h> 57 #include <limits.h> 58 #include <errno.h> 59 #include <ifaddrs.h> 60 #include "dkstats.h" 61 62 #undef FSHIFT /* Use protocol's shift and scale values */ 63 #undef FSCALE 64 #undef DK_NDRIVE 65 #undef CPUSTATES 66 #undef if_ipackets 67 #undef if_ierrors 68 #undef if_opackets 69 #undef if_oerrors 70 #undef if_collisions 71 #include <rpcsvc/rstat.h> 72 73 int cp_xlat[CPUSTATES] = { CP_USER, CP_NICE, CP_SYS, CP_IDLE }; 74 75 extern int dk_ndrive; /* from dkstats.c */ 76 extern struct _disk cur, last; 77 char *memf = NULL, *nlistf = NULL; 78 int hz; 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(void); 91 void updatestatsig(int sig); 92 void setup(void); 93 94 volatile sig_atomic_t wantupdatestat; 95 96 static int stat_is_init = 0; 97 98 #ifndef FSCALE 99 #define FSCALE (1 << 8) 100 #endif 101 102 static void 103 stat_init(void) 104 { 105 stat_is_init = 1; 106 setup(); 107 updatestat(); 108 (void) signal(SIGALRM, updatestatsig); 109 alarm(1); 110 } 111 112 statstime * 113 rstatproc_stats_3_svc(void *arg, 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 *arg, 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 *arg, 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 *arg, struct svc_req *rqstp) 141 { 142 static u_int have; 143 144 if (!stat_is_init) 145 stat_init(); 146 sincelastreq = 0; 147 have = dk_ndrive != 0; 148 return (&have); 149 } 150 151 u_int * 152 rstatproc_havedisk_2_svc(void *arg, struct svc_req *rqstp) 153 { 154 return (rstatproc_havedisk_3_svc(arg, rqstp)); 155 } 156 157 u_int * 158 rstatproc_havedisk_1_svc(void *arg, struct svc_req *rqstp) 159 { 160 return (rstatproc_havedisk_3_svc(arg, rqstp)); 161 } 162 163 /* ARGSUSED */ 164 void 165 updatestatsig(int sig) 166 { 167 wantupdatestat = 1; 168 } 169 170 void 171 updatestat(void) 172 { 173 int i, mib[2], save_errno = errno; 174 struct uvmexp uvmexp; 175 size_t len; 176 struct if_data *ifdp; 177 struct ifaddrs *ifaddrs, *ifa; 178 double avrun[3]; 179 struct timeval tm, btm; 180 long *cp_time = cur.cp_time; 181 182 #ifdef DEBUG 183 syslog(LOG_DEBUG, "entering updatestat"); 184 #endif 185 if (sincelastreq >= closedown) { 186 #ifdef DEBUG 187 syslog(LOG_DEBUG, "about to closedown"); 188 #endif 189 if (from_inetd) 190 _exit(0); 191 else { 192 stat_is_init = 0; 193 errno = save_errno; 194 return; 195 } 196 } 197 sincelastreq++; 198 199 /* 200 * dkreadstats reads in the "disk_count" as well as the "disklist" 201 * statistics. It also retrieves "hz" and the "cp_time" array. 202 */ 203 dkreadstats(); 204 memset(stats_all.s1.dk_xfer, '\0', sizeof(stats_all.s1.dk_xfer)); 205 for (i = 0; i < dk_ndrive && i < DK_NDRIVE; i++) 206 stats_all.s1.dk_xfer[i] = cur.dk_rxfer[i] + cur.dk_wxfer[i]; 207 208 for (i = 0; i < CPUSTATES; i++) 209 stats_all.s1.cp_time[i] = cp_time[cp_xlat[i]]; 210 (void)getloadavg(avrun, sizeof(avrun) / sizeof(avrun[0])); 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 mib[0] = CTL_KERN; 215 mib[1] = KERN_BOOTTIME; 216 len = sizeof(btm); 217 if (sysctl(mib, 2, &btm, &len, NULL, 0) < 0) { 218 syslog(LOG_ERR, "can't sysctl kern.boottime: %m"); 219 _exit(1); 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 syslog(LOG_DEBUG, "%d %d %d %d", stats_all.s1.cp_time[0], 227 stats_all.s1.cp_time[1], stats_all.s1.cp_time[2], 228 stats_all.s1.cp_time[3]); 229 #endif 230 231 mib[0] = CTL_VM; 232 mib[1] = VM_UVMEXP; 233 len = sizeof(uvmexp); 234 if (sysctl(mib, 2, &uvmexp, &len, NULL, 0) < 0) { 235 syslog(LOG_ERR, "can't sysctl vm.uvmexp: %m"); 236 _exit(1); 237 } 238 stats_all.s1.v_pgpgin = uvmexp.fltanget; 239 stats_all.s1.v_pgpgout = uvmexp.pdpageouts; 240 stats_all.s1.v_pswpin = uvmexp.swapins; 241 stats_all.s1.v_pswpout = uvmexp.swapouts; 242 stats_all.s1.v_intr = uvmexp.intrs; 243 stats_all.s2.v_swtch = uvmexp.swtch; 244 gettimeofday(&tm, (struct timezone *) 0); 245 stats_all.s1.v_intr -= hz*(tm.tv_sec - btm.tv_sec) + 246 hz*(tm.tv_usec - btm.tv_usec)/1000000; 247 stats_all.s1.if_ipackets = 0; 248 stats_all.s1.if_opackets = 0; 249 stats_all.s1.if_ierrors = 0; 250 stats_all.s1.if_oerrors = 0; 251 stats_all.s1.if_collisions = 0; 252 if (getifaddrs(&ifaddrs) == -1) { 253 syslog(LOG_ERR, "can't getifaddrs: %m"); 254 _exit(1); 255 } 256 for (ifa = ifaddrs; ifa != NULL; ifa = ifa->ifa_next) { 257 if (ifa->ifa_addr->sa_family != AF_LINK) 258 continue; 259 ifdp = (struct if_data *)ifa->ifa_data; 260 stats_all.s1.if_ipackets += ifdp->ifi_ipackets; 261 stats_all.s1.if_opackets += ifdp->ifi_opackets; 262 stats_all.s1.if_ierrors += ifdp->ifi_ierrors; 263 stats_all.s1.if_oerrors += ifdp->ifi_oerrors; 264 stats_all.s1.if_collisions += ifdp->ifi_collisions; 265 } 266 freeifaddrs(ifaddrs); 267 stats_all.s3.curtime.tv_sec = tm.tv_sec; 268 stats_all.s3.curtime.tv_usec = tm.tv_usec; 269 270 alarm(1); 271 errno = save_errno; 272 } 273 274 void 275 setup(void) 276 { 277 dkinit(0); 278 } 279 280 void rstat_service(struct svc_req *, SVCXPRT *); 281 282 void 283 rstat_service(struct svc_req *rqstp, SVCXPRT *transp) 284 { 285 char *(*local)(void *, struct svc_req *); 286 xdrproc_t xdr_argument, xdr_result; 287 union { 288 int fill; 289 } argument; 290 char *result; 291 292 switch (rqstp->rq_proc) { 293 case NULLPROC: 294 (void)svc_sendreply(transp, xdr_void, (char *)NULL); 295 return; 296 297 case RSTATPROC_STATS: 298 xdr_argument = (xdrproc_t)xdr_void; 299 xdr_result = (xdrproc_t)xdr_statstime; 300 switch (rqstp->rq_vers) { 301 case RSTATVERS_ORIG: 302 local = (char *(*)(void *, struct svc_req *)) 303 rstatproc_stats_1_svc; 304 break; 305 case RSTATVERS_SWTCH: 306 local = (char *(*)(void *, struct svc_req *)) 307 rstatproc_stats_2_svc; 308 break; 309 case RSTATVERS_TIME: 310 local = (char *(*)(void *, struct svc_req *)) 311 rstatproc_stats_3_svc; 312 break; 313 default: 314 svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME); 315 return; 316 } 317 break; 318 319 case RSTATPROC_HAVEDISK: 320 xdr_argument = (xdrproc_t)xdr_void; 321 xdr_result = (xdrproc_t)xdr_u_int; 322 switch (rqstp->rq_vers) { 323 case RSTATVERS_ORIG: 324 local = (char *(*)(void *, struct svc_req *)) 325 rstatproc_havedisk_1_svc; 326 break; 327 case RSTATVERS_SWTCH: 328 local = (char *(*)(void *, struct svc_req *)) 329 rstatproc_havedisk_2_svc; 330 break; 331 case RSTATVERS_TIME: 332 local = (char *(*)(void *, struct svc_req *)) 333 rstatproc_havedisk_3_svc; 334 break; 335 default: 336 svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME); 337 return; 338 } 339 break; 340 341 default: 342 svcerr_noproc(transp); 343 return; 344 } 345 bzero((char *)&argument, sizeof(argument)); 346 if (!svc_getargs(transp, xdr_argument, (caddr_t)&argument)) { 347 svcerr_decode(transp); 348 return; 349 } 350 result = (*local)(&argument, rqstp); 351 if (result != NULL && !svc_sendreply(transp, xdr_result, result)) { 352 svcerr_systemerr(transp); 353 } 354 if (!svc_freeargs(transp, xdr_argument, (caddr_t)&argument)) { 355 syslog(LOG_ERR, "unable to free arguments"); 356 exit(1); 357 } 358 } 359