OpenBSD-4.6/libexec/rpc.rstatd/rstat_proc.c
/* $OpenBSD: rstat_proc.c,v 1.26 2004/09/15 19:05:35 deraadt Exp $ */
/*
* 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
*/
#ifndef lint
/*static char sccsid[] = "from: @(#)rpc.rstatd.c 1.1 86/09/25 Copyr 1984 Sun Micro";*/
/*static char sccsid[] = "from: @(#)rstat_proc.c 2.2 88/08/01 4.0 RPCSRC";*/
static char rcsid[] = "$OpenBSD: rstat_proc.c,v 1.26 2004/09/15 19:05:35 deraadt Exp $";
#endif
/*
* rstat service: built with rstat.x and derived from rpc.rstatd.c
*
* Copyright (c) 1984 by Sun Microsystems, Inc.
*/
#include <sys/param.h>
#include <sys/vmmeter.h>
#include <sys/dkstat.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <net/if.h>
#include <uvm/uvm_extern.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <syslog.h>
#include <fcntl.h>
#include <limits.h>
#include <errno.h>
#include <ifaddrs.h>
#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 <rpcsvc/rstat.h>
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 = uvmexp.swapins;
stats_all.s1.v_pswpout = uvmexp.swapouts;
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);
}
}