/* $OpenBSD: rstat_proc.c,v 1.33 2015/01/16 06:39:50 deraadt Exp $ */ /* * Copyright (c) 2010, Oracle America, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * Neither the name of the "Oracle America, Inc." nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * rstat service: built with rstat.x and derived from rpc.rstatd.c */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "dkstats.h" #undef FSHIFT /* Use protocol's shift and scale values */ #undef FSCALE #undef DK_NDRIVE #undef CPUSTATES #undef if_ipackets #undef if_ierrors #undef if_opackets #undef if_oerrors #undef if_collisions #include int cp_xlat[CPUSTATES] = { CP_USER, CP_NICE, CP_SYS, CP_IDLE }; extern int dk_ndrive; /* from dkstats.c */ extern struct _disk cur, last; char *memf = NULL, *nlistf = NULL; int hz; 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(void); void updatestatsig(int sig); void setup(void); volatile sig_atomic_t wantupdatestat; static int stat_is_init = 0; #ifndef FSCALE #define FSCALE (1 << 8) #endif static void stat_init(void) { stat_is_init = 1; setup(); updatestat(); (void) signal(SIGALRM, updatestatsig); alarm(1); } statstime * rstatproc_stats_3_svc(void *arg, struct svc_req *rqstp) { if (!stat_is_init) stat_init(); sincelastreq = 0; return (&stats_all.s3); } statsswtch * rstatproc_stats_2_svc(void *arg, struct svc_req *rqstp) { if (!stat_is_init) stat_init(); sincelastreq = 0; return (&stats_all.s2); } stats * rstatproc_stats_1_svc(void *arg, struct svc_req *rqstp) { if (!stat_is_init) stat_init(); sincelastreq = 0; return (&stats_all.s1); } u_int * rstatproc_havedisk_3_svc(void *arg, struct svc_req *rqstp) { static u_int have; if (!stat_is_init) stat_init(); sincelastreq = 0; have = dk_ndrive != 0; return (&have); } u_int * rstatproc_havedisk_2_svc(void *arg, struct svc_req *rqstp) { return (rstatproc_havedisk_3_svc(arg, rqstp)); } u_int * rstatproc_havedisk_1_svc(void *arg, struct svc_req *rqstp) { return (rstatproc_havedisk_3_svc(arg, rqstp)); } /* ARGSUSED */ void updatestatsig(int sig) { wantupdatestat = 1; } void updatestat(void) { int i, mib[2], save_errno = errno; struct uvmexp uvmexp; size_t len; struct if_data *ifdp; struct ifaddrs *ifaddrs, *ifa; double avrun[3]; struct timeval tm, btm; long *cp_time = cur.cp_time; #ifdef DEBUG syslog(LOG_DEBUG, "entering updatestat"); #endif if (sincelastreq >= closedown) { #ifdef DEBUG syslog(LOG_DEBUG, "about to closedown"); #endif if (from_inetd) _exit(0); else { stat_is_init = 0; errno = save_errno; return; } } sincelastreq++; /* * dkreadstats reads in the "disk_count" as well as the "disklist" * statistics. It also retrieves "hz" and the "cp_time" array. */ dkreadstats(); memset(stats_all.s1.dk_xfer, '\0', sizeof(stats_all.s1.dk_xfer)); for (i = 0; i < dk_ndrive && i < DK_NDRIVE; i++) stats_all.s1.dk_xfer[i] = cur.dk_rxfer[i] + cur.dk_wxfer[i]; for (i = 0; i < CPUSTATES; i++) stats_all.s1.cp_time[i] = cp_time[cp_xlat[i]]; (void)getloadavg(avrun, sizeof(avrun) / sizeof(avrun[0])); stats_all.s2.avenrun[0] = avrun[0] * FSCALE; stats_all.s2.avenrun[1] = avrun[1] * FSCALE; stats_all.s2.avenrun[2] = avrun[2] * FSCALE; mib[0] = CTL_KERN; mib[1] = KERN_BOOTTIME; len = sizeof(btm); if (sysctl(mib, 2, &btm, &len, NULL, 0) < 0) { syslog(LOG_ERR, "can't sysctl kern.boottime: %m"); _exit(1); } stats_all.s2.boottime.tv_sec = btm.tv_sec; stats_all.s2.boottime.tv_usec = btm.tv_usec; #ifdef DEBUG syslog(LOG_DEBUG, "%d %d %d %d", 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 mib[0] = CTL_VM; mib[1] = VM_UVMEXP; len = sizeof(uvmexp); if (sysctl(mib, 2, &uvmexp, &len, NULL, 0) < 0) { syslog(LOG_ERR, "can't sysctl vm.uvmexp: %m"); _exit(1); } stats_all.s1.v_pgpgin = uvmexp.fltanget; stats_all.s1.v_pgpgout = uvmexp.pdpageouts; stats_all.s1.v_pswpin = 0; stats_all.s1.v_pswpout = 0; stats_all.s1.v_intr = uvmexp.intrs; stats_all.s2.v_swtch = uvmexp.swtch; 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.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; if (getifaddrs(&ifaddrs) == -1) { syslog(LOG_ERR, "can't getifaddrs: %m"); _exit(1); } for (ifa = ifaddrs; ifa != NULL; ifa = ifa->ifa_next) { if (ifa->ifa_addr->sa_family != AF_LINK) continue; ifdp = (struct if_data *)ifa->ifa_data; stats_all.s1.if_ipackets += ifdp->ifi_ipackets; stats_all.s1.if_opackets += ifdp->ifi_opackets; stats_all.s1.if_ierrors += ifdp->ifi_ierrors; stats_all.s1.if_oerrors += ifdp->ifi_oerrors; stats_all.s1.if_collisions += ifdp->ifi_collisions; } freeifaddrs(ifaddrs); stats_all.s3.curtime.tv_sec = tm.tv_sec; stats_all.s3.curtime.tv_usec = tm.tv_usec; alarm(1); errno = save_errno; } void setup(void) { dkinit(0); } void rstat_service(struct svc_req *, SVCXPRT *); void rstat_service(struct svc_req *rqstp, SVCXPRT *transp) { char *(*local)(void *, struct svc_req *); xdrproc_t xdr_argument, xdr_result; union { int fill; } argument; char *result; switch (rqstp->rq_proc) { case NULLPROC: (void)svc_sendreply(transp, xdr_void, (char *)NULL); return; case RSTATPROC_STATS: xdr_argument = (xdrproc_t)xdr_void; xdr_result = (xdrproc_t)xdr_statstime; switch (rqstp->rq_vers) { case RSTATVERS_ORIG: local = (char *(*)(void *, struct svc_req *)) rstatproc_stats_1_svc; break; case RSTATVERS_SWTCH: local = (char *(*)(void *, struct svc_req *)) rstatproc_stats_2_svc; break; case RSTATVERS_TIME: local = (char *(*)(void *, struct svc_req *)) rstatproc_stats_3_svc; break; default: svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME); return; } break; case RSTATPROC_HAVEDISK: xdr_argument = (xdrproc_t)xdr_void; xdr_result = (xdrproc_t)xdr_u_int; switch (rqstp->rq_vers) { case RSTATVERS_ORIG: local = (char *(*)(void *, struct svc_req *)) rstatproc_havedisk_1_svc; break; case RSTATVERS_SWTCH: local = (char *(*)(void *, struct svc_req *)) rstatproc_havedisk_2_svc; break; case RSTATVERS_TIME: local = (char *(*)(void *, struct svc_req *)) rstatproc_havedisk_3_svc; break; default: svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME); return; } break; default: svcerr_noproc(transp); return; } bzero((char *)&argument, sizeof(argument)); if (!svc_getargs(transp, xdr_argument, (caddr_t)&argument)) { svcerr_decode(transp); return; } result = (*local)(&argument, rqstp); if (result != NULL && !svc_sendreply(transp, xdr_result, result)) { svcerr_systemerr(transp); } if (!svc_freeargs(transp, xdr_argument, (caddr_t)&argument)) { syslog(LOG_ERR, "unable to free arguments"); exit(1); } }