NetBSD-5.0.2/libexec/rpc.rstatd/rstat_proc.c
/* $NetBSD: rstat_proc.c,v 1.43 2006/04/14 13:19:03 blymn 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
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
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";
#else
__RCSID("$NetBSD: rstat_proc.c,v 1.43 2006/04/14 13:19:03 blymn Exp $");
#endif
#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/sched.h>
#include <sys/socket.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <fcntl.h>
#include <kvm.h>
#include <limits.h>
#include <nlist.h>
#include <syslog.h>
#ifdef BSD
#include <sys/sysctl.h>
#include <uvm/uvm_extern.h>
#include "drvstats.h"
#else
#include <sys/dk.h>
#endif
#include <net/if.h>
/*
* XXX
*
* this is a huge hack to stop `struct pmap' being
* defined twice!
*/
#define _RPC_PMAP_PROT_H_
#include <rpc/rpc.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>
#ifdef BSD
#define BSD_CPUSTATES 5 /* Use protocol's idea of CPU states */
int cp_xlat[CPUSTATES] = { CP_USER, CP_NICE, CP_SYS, CP_IDLE };
#endif
struct nlist nl[] = {
#define X_IFNET 0
{ "_ifnet" },
{ NULL },
};
int hz;
char *memf = NULL, *nlistf = NULL;
struct ifnet_head ifnetq; /* chain of ethernet interfaces */
int numintfs;
extern int from_inetd;
int sincelastreq = 0; /* number of alarms since last request */
extern int closedown;
kvm_t *kfd;
union {
struct stats s1;
struct statsswtch s2;
struct statstime s3;
} stats_all;
void updatestat(int);
void setup(void);
void setup_kd_once(void);
void stat_init(void);
int havedisk(void);
void rstat_service(struct svc_req *, SVCXPRT *);
static int stat_is_init = 0;
#ifndef FSCALE
#define FSCALE (1 << 8)
#endif
void
stat_init()
{
stat_is_init = 1;
setup();
updatestat(0);
(void) signal(SIGALRM, updatestat);
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;
stats_all.s2.if_opackets = stats_all.s3.if_opackets;
return (&stats_all.s2);
}
stats *
rstatproc_stats_1_svc(void *arg, struct svc_req *rqstp)
{
if (!stat_is_init)
stat_init();
sincelastreq = 0;
stats_all.s1.if_opackets = stats_all.s3.if_opackets;
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 = havedisk();
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));
}
void
updatestat(int dummy)
{
long off;
int i;
size_t len;
int mib[2];
struct uvmexp_sysctl uvmexp;
struct ifnet ifnet;
double avrun[3];
struct timeval tm, btm;
#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;
return;
}
}
sincelastreq++;
/*
* drvreadstats reads in the "disk_count" as well as the "disklist"
* statistics. It also retrieves "hz" and the "cp_time" array.
*/
drvreadstats();
memset(stats_all.s3.dk_xfer, 0, sizeof(stats_all.s3.dk_xfer));
for (i = 0; i < ndrive && i < DK_NDRIVE; i++)
stats_all.s3.dk_xfer[i] = cur.rxfer[i] + cur.wxfer[i];
#ifdef BSD
for (i = 0; i < CPUSTATES; i++)
stats_all.s3.cp_time[i] = cur.cp_time[cp_xlat[i]];
#else
if (kvm_read(kfd, (long)nl[X_CPTIME].n_value,
(char *)stats_all.s3.cp_time,
sizeof (stats_all.s3.cp_time))
!= sizeof (stats_all.s3.cp_time)) {
syslog(LOG_ERR, "can't read cp_time from kmem");
exit(1);
}
#endif
#ifdef BSD
(void)getloadavg(avrun, sizeof(avrun) / sizeof(avrun[0]));
#endif
stats_all.s3.avenrun[0] = avrun[0] * FSCALE;
stats_all.s3.avenrun[1] = avrun[1] * FSCALE;
stats_all.s3.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");
exit(1);
}
stats_all.s3.boottime.tv_sec = btm.tv_sec;
stats_all.s3.boottime.tv_usec = btm.tv_usec;
#ifdef DEBUG
syslog(LOG_DEBUG, "%d %d %d %d %d\n", stats_all.s3.cp_time[0],
stats_all.s3.cp_time[1], stats_all.s3.cp_time[2],
stats_all.s3.cp_time[3], stats_all.s3.cp_time[4]);
#endif
mib[0] = CTL_VM;
mib[1] = VM_UVMEXP2;
len = sizeof(uvmexp);
if (sysctl(mib, 2, &uvmexp, &len, NULL, 0) < 0) {
syslog(LOG_ERR, "can't sysctl vm.uvmexp2");
exit(1);
}
stats_all.s3.v_pgpgin = uvmexp.fltanget;
stats_all.s3.v_pgpgout = uvmexp.pdpageouts;
stats_all.s3.v_pswpin = uvmexp.swapins;
stats_all.s3.v_pswpout = uvmexp.swapouts;
stats_all.s3.v_intr = uvmexp.intrs;
stats_all.s3.v_swtch = uvmexp.swtch;
gettimeofday(&tm, (struct timezone *) 0);
stats_all.s3.v_intr -= hz*(tm.tv_sec - btm.tv_sec) +
hz*(tm.tv_usec - btm.tv_usec)/1000000;
stats_all.s3.if_ipackets = 0;
stats_all.s3.if_opackets = 0;
stats_all.s3.if_ierrors = 0;
stats_all.s3.if_oerrors = 0;
stats_all.s3.if_collisions = 0;
for (off = (long)ifnetq.tqh_first, i = 0; off && i < numintfs; i++) {
if (kvm_read(kfd, off, (char *)&ifnet, sizeof ifnet) !=
sizeof ifnet) {
syslog(LOG_ERR, "can't read ifnet from kmem");
exit(1);
}
stats_all.s3.if_ipackets += ifnet.if_data.ifi_ipackets;
stats_all.s3.if_opackets += ifnet.if_data.ifi_opackets;
stats_all.s3.if_ierrors += ifnet.if_data.ifi_ierrors;
stats_all.s3.if_oerrors += ifnet.if_data.ifi_oerrors;
stats_all.s3.if_collisions += ifnet.if_data.ifi_collisions;
off = (long)ifnet.if_list.tqe_next;
}
stats_all.s3.curtime.tv_sec = tm.tv_sec;
stats_all.s3.curtime.tv_usec = tm.tv_usec;
alarm(1);
}
void
setup_kd_once()
{
char errbuf[_POSIX2_LINE_MAX];
kfd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, errbuf);
if (kfd == NULL) {
syslog(LOG_ERR, "%s", errbuf);
exit (1);
}
}
void
setup()
{
struct ifnet ifnet;
long off;
static int is_kfd_setup = 0;
/* setup() is called after each dormant->active
* transition. Since we never close the kvm files
* (there's no reason), make sure we don't open them
* each time, as that can lead to exhaustion of all open
* files! */
if (!is_kfd_setup) {
setup_kd_once();
is_kfd_setup = 1;
}
if (kvm_nlist(kfd, nl) != 0) {
syslog(LOG_ERR, "can't get namelist");
exit (1);
}
if (kvm_read(kfd, (long)nl[X_IFNET].n_value, &ifnetq,
sizeof ifnetq) != sizeof ifnetq) {
syslog(LOG_ERR, "can't read ifnet queue head from kmem");
exit(1);
}
numintfs = 0;
for (off = (long)ifnetq.tqh_first; off;) {
if (kvm_read(kfd, off, (char *)&ifnet, sizeof ifnet) !=
sizeof ifnet) {
syslog(LOG_ERR, "can't read ifnet from kmem");
exit(1);
}
numintfs++;
off = (long)ifnet.if_list.tqe_next;
}
drvinit(0);
}
/*
* returns true if have a disk
*/
int
havedisk()
{
return ndrive != 0;
}
void
rstat_service(struct svc_req *rqstp, SVCXPRT *transp)
{
union {
int fill;
} argument;
char *result;
xdrproc_t xdr_argument, xdr_result;
char *(*local)(void *, struct svc_req *);
switch (rqstp->rq_proc) {
case NULLPROC:
(void)svc_sendreply(transp, xdr_void, (char *)NULL);
goto leave;
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);
goto leave;
}
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);
goto leave;
}
break;
default:
svcerr_noproc(transp);
goto leave;
}
memset((char *)&argument, 0, sizeof(argument));
if (!svc_getargs(transp, xdr_argument, (caddr_t)&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, (caddr_t)&argument)) {
(void)fprintf(stderr, "unable to free arguments\n");
exit(1);
}
leave:
if (from_inetd)
exit(0);
}