/* @(#)rstat_proc.c 2.2 88/08/01 4.0 RPCSRC */ #ifndef lint static char sccsid[] = "@(#)rpc.rstatd.c 1.1 86/09/25 Copyr 1984 Sun Micro"; #endif /* * Copyright (c) 1984 by Sun Microsystems, Inc. */ /* * Sun RPC is a product of Sun Microsystems, Inc. and is provided for * unrestricted use provided that this legend is included on all tape * media and as a part of the software program in whole or part. Users * may copy or modify Sun RPC without charge, but are not authorized * to license or distribute it to anyone else except as part of a product or * program developed by the user. * * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. * * Sun RPC is provided with no support and without any obligation on the * part of Sun Microsystems, Inc. to assist in its use, correction, * modification or enhancement. * * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC * OR ANY PART THEREOF. * * In no event will Sun Microsystems, Inc. be liable for any lost revenue * or profits or other special, indirect and consequential damages, even if * Sun has been advised of the possibility of such damages. * * Sun Microsystems, Inc. * 2550 Garcia Avenue * Mountain View, California 94043 */ /* * rstat service: built with rstat.x and derived from rpc.rstatd.c */ #include #include #include #include #include #include #include #include #ifdef BSD #include #include #else #include #endif #include #include struct nlist nl[] = { #define X_CPTIME 0 { "_cp_time" }, #define X_SUM 1 { "_sum" }, #define X_IFNET 2 { "_ifnet" }, #define X_DKXFER 3 { "_dk_xfer" }, #define X_BOOTTIME 4 { "_boottime" }, #define X_HZ 5 { "_hz" }, #ifdef vax #define X_AVENRUN 6 { "_avenrun" }, #endif "", }; int firstifnet, numintfs; /* chain of ethernet interfaces */ int stats_service(); extern int from_inetd; int sincelastreq = 0; /* number of alarms since last request */ extern int closedown; union { struct stats s1; struct statsswtch s2; struct statstime s3; } stats_all; void updatestat(); static stat_is_init = 0; extern int errno; #ifndef FSCALE #define FSCALE (1 << 8) #endif #ifndef BSD /* * BSD has the kvm facility for getting info from the * kernel. If you aren't on BSD, this surfices. */ int kmem; kvm_read(off, addr, size) unsigned long off, size; char *addr; { int len; if (lseek(kmem, (long)off, 0) == -1) return(-1); return(read(kmem, addr, size)); } kvm_nlist(nl) struct nlist *nl; { int n = nlist("/vmunix", nl); if (nl[0].n_value == 0) return(n); if ((kmem = open("/dev/kmem", 0)) < 0) return(-1); return(0); } #endif stat_init() { stat_is_init = 1; setup(); updatestat(); (void) signal(SIGALRM, updatestat); alarm(1); } statstime * rstatproc_stats_3() { if (! stat_is_init) stat_init(); sincelastreq = 0; return(&stats_all.s3); } statsswtch * rstatproc_stats_2() { if (! stat_is_init) stat_init(); sincelastreq = 0; return(&stats_all.s2); } stats * rstatproc_stats_1() { if (! stat_is_init) stat_init(); sincelastreq = 0; return(&stats_all.s1); } u_int * rstatproc_havedisk_3() { static u_int have; if (! stat_is_init) stat_init(); sincelastreq = 0; have = havedisk(); return(&have); } u_int * rstatproc_havedisk_2() { return(rstatproc_havedisk_3()); } u_int * rstatproc_havedisk_1() { return(rstatproc_havedisk_3()); } void updatestat() { int off, i, hz; struct vmmeter sum; struct ifnet ifnet; double avrun[3]; struct timeval tm, btm; #ifdef DEBUG fprintf(stderr, "entering updatestat\n"); #endif if (sincelastreq >= closedown) { #ifdef DEBUG fprintf(stderr, "about to closedown\n"); #endif if (from_inetd) exit(0); else { stat_is_init = 0; return; } } sincelastreq++; if (kvm_read((long)nl[X_HZ].n_value, (char *)&hz, sizeof hz) != sizeof hz) { syslog(LOG_ERR, "rstat: can't read hz from kmem\n"); exit(1); } if (kvm_read((long)nl[X_CPTIME].n_value, (char *)stats_all.s1.cp_time, sizeof (stats_all.s1.cp_time)) != sizeof (stats_all.s1.cp_time)) { syslog(LOG_ERR, "rstat: can't read cp_time from kmem\n"); exit(1); } #ifdef vax if (kvm_read((long)nl[X_AVENRUN].n_value, (char *)avrun, sizeof (avrun)) != sizeof (avrun)) { syslog(LOG_ERR, "rstat: can't read avenrun from kmem\n"); exit(1); } #endif #ifdef BSD (void)getloadavg(avrun, sizeof(avrun) / sizeof(avrun[0])); #endif stats_all.s2.avenrun[0] = avrun[0] * FSCALE; stats_all.s2.avenrun[1] = avrun[1] * FSCALE; stats_all.s2.avenrun[2] = avrun[2] * FSCALE; if (kvm_read((long)nl[X_BOOTTIME].n_value, (char *)&btm, sizeof (stats_all.s2.boottime)) != sizeof (stats_all.s2.boottime)) { syslog(LOG_ERR, "rstat: can't read boottime from kmem\n"); exit(1); } stats_all.s2.boottime.tv_sec = btm.tv_sec; stats_all.s2.boottime.tv_usec = btm.tv_usec; #ifdef DEBUG fprintf(stderr, "%d %d %d %d\n", stats_all.s1.cp_time[0], stats_all.s1.cp_time[1], stats_all.s1.cp_time[2], stats_all.s1.cp_time[3]); #endif if (kvm_read((long)nl[X_SUM].n_value, (char *)&sum, sizeof sum) != sizeof sum) { syslog(LOG_ERR, "rstat: can't read sum from kmem\n"); exit(1); } stats_all.s1.v_pgpgin = sum.v_pgpgin; stats_all.s1.v_pgpgout = sum.v_pgpgout; stats_all.s1.v_pswpin = sum.v_pswpin; stats_all.s1.v_pswpout = sum.v_pswpout; stats_all.s1.v_intr = sum.v_intr; gettimeofday(&tm, (struct timezone *) 0); stats_all.s1.v_intr -= hz*(tm.tv_sec - btm.tv_sec) + hz*(tm.tv_usec - btm.tv_usec)/1000000; stats_all.s2.v_swtch = sum.v_swtch; if (kvm_read((long)nl[X_DKXFER].n_value, (char *)stats_all.s1.dk_xfer, sizeof (stats_all.s1.dk_xfer)) != sizeof (stats_all.s1.dk_xfer)) { syslog(LOG_ERR, "rstat: can't read dk_xfer from kmem\n"); exit(1); } stats_all.s1.if_ipackets = 0; stats_all.s1.if_opackets = 0; stats_all.s1.if_ierrors = 0; stats_all.s1.if_oerrors = 0; stats_all.s1.if_collisions = 0; for (off = firstifnet, i = 0; off && i < numintfs; i++) { if (kvm_read(off, (char *)&ifnet, sizeof ifnet) != sizeof ifnet) { syslog(LOG_ERR, "rstat: can't read ifnet from kmem\n"); exit(1); } stats_all.s1.if_ipackets += ifnet.if_ipackets; stats_all.s1.if_opackets += ifnet.if_opackets; stats_all.s1.if_ierrors += ifnet.if_ierrors; stats_all.s1.if_oerrors += ifnet.if_oerrors; stats_all.s1.if_collisions += ifnet.if_collisions; off = (int) ifnet.if_next; } gettimeofday((struct timeval *)&stats_all.s3.curtime, (struct timezone *) 0); alarm(1); } setup() { struct ifnet ifnet; int off; if (kvm_nlist(nl) != 0) { syslog(LOG_ERR, "rstatd: Can't get namelist."); exit (1); } if (kvm_read((long)nl[X_IFNET].n_value, &firstifnet, sizeof(int)) != sizeof(int)) { syslog(LOG_ERR, "rstat: can't read firstifnet from kmem\n"); exit(1); } numintfs = 0; for (off = firstifnet; off;) { if (kvm_read(off, (char *)&ifnet, sizeof ifnet) != sizeof ifnet) { syslog(LOG_ERR, "rstat: can't read ifnet from kmem\n"); exit(1); } numintfs++; off = (int) ifnet.if_next; } } /* * returns true if have a disk */ havedisk() { int i, cnt; long xfer[DK_NDRIVE]; if (kvm_nlist(nl) != 0) { syslog(LOG_ERR, "rstatd: Can't get namelist."); exit (1); } if (kvm_read((long)nl[X_DKXFER].n_value, (char *)xfer, sizeof xfer)!= sizeof xfer) { syslog(LOG_ERR, "rstat: can't read kmem\n"); exit(1); } cnt = 0; for (i=0; i < DK_NDRIVE; i++) cnt += xfer[i]; return (cnt != 0); } void rstat_service(rqstp, transp) struct svc_req *rqstp; SVCXPRT *transp; { union { int fill; } argument; char *result; bool_t (*xdr_argument)(), (*xdr_result)(); char *(*local)(); switch (rqstp->rq_proc) { case NULLPROC: (void)svc_sendreply(transp, xdr_void, (char *)NULL); goto leave; case RSTATPROC_STATS: xdr_argument = xdr_void; xdr_result = xdr_statstime; switch (rqstp->rq_vers) { case RSTATVERS_ORIG: local = (char *(*)()) rstatproc_stats_1; break; case RSTATVERS_SWTCH: local = (char *(*)()) rstatproc_stats_2; break; case RSTATVERS_TIME: local = (char *(*)()) rstatproc_stats_3; break; default: svcerr_progvers(transp); goto leave; /*NOTREACHED*/ } break; case RSTATPROC_HAVEDISK: xdr_argument = xdr_void; xdr_result = xdr_u_int; switch (rqstp->rq_vers) { case RSTATVERS_ORIG: local = (char *(*)()) rstatproc_havedisk_1; break; case RSTATVERS_SWTCH: local = (char *(*)()) rstatproc_havedisk_2; break; case RSTATVERS_TIME: local = (char *(*)()) rstatproc_havedisk_3; break; default: svcerr_progvers(transp); goto leave; /*NOTREACHED*/ } break; default: svcerr_noproc(transp); goto leave; } bzero((char *)&argument, sizeof(argument)); if (!svc_getargs(transp, xdr_argument, &argument)) { svcerr_decode(transp); goto leave; } result = (*local)(&argument, rqstp); if (result != NULL && !svc_sendreply(transp, xdr_result, result)) { svcerr_systemerr(transp); } if (!svc_freeargs(transp, xdr_argument, &argument)) { (void)fprintf(stderr, "unable to free arguments\n"); exit(1); } leave: if (from_inetd) exit(0); }