freebsd-dev/libexec/rpc.rstatd/rstat_proc.c

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/*
* 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";*/
1995-05-30 05:51:47 +00:00
static char rcsid[] = "$Id: rstat_proc.c,v 1.2 1994/10/15 13:39:54 davidg Exp $";
#endif
/*
* rstat service: built with rstat.x and derived from rpc.rstatd.c
*
* Copyright (c) 1984 by Sun Microsystems, Inc.
*/
#include <fcntl.h>
#include <kvm.h>
#include <limits.h>
#include <nlist.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <rpc/rpc.h>
#include <sys/socket.h>
#include <sys/errno.h>
#include <sys/param.h>
#ifdef BSD
#include <sys/vmmeter.h>
#include <sys/dkstat.h>
#else
#include <sys/dk.h>
#endif
#include <net/if.h>
#undef FSHIFT /* Use protocol's shift and scale values */
#undef FSCALE
#undef if_ipackets
#undef if_ierrors
#undef if_opackets
#undef if_oerrors
#undef if_collisions
#include <rpcsvc/rstat.h>
struct nlist nl[] = {
#define X_CPTIME 0
{ "_cp_time" },
#define X_CNT 1
{ "_cnt" },
#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;
static kvm_t *kd;
extern int errno;
#if defined(BSD)
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static int cp_time_xlat[RSTAT_CPUSTATES] = { CP_USER, CP_NICE, CP_SYS,
CP_IDLE };
static long bsd_cp_time[CPUSTATES];
#endif
#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(kd, off, addr, size)
void * kd;
unsigned long off, size;
char *addr;
{
int len;
if (lseek(kmem, (long)off, 0) == -1)
return(-1);
return(read(kmem, addr, size));
}
kvm_nlist(kd, nl)
void * kd;
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 cnt;
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(kd, (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 defined(BSD)
if (kvm_read(kd, (long)nl[X_CPTIME].n_value, (char *)bsd_cp_time, sizeof(bsd_cp_time))
!= sizeof(bsd_cp_time)) {
syslog(LOG_ERR, "rstat: can't read cp_time from kmem\n");
exit(1);
}
for(i = 0; i < RSTAT_CPUSTATES ; i++)
stats_all.s1.cp_time[i] = bsd_cp_time[cp_time_xlat[i]];
#else
if (kvm_read(kd, (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);
}
#endif
#ifdef vax
if (kvm_read(kd, (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(kd, (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(kd, (long)nl[X_CNT].n_value, (char *)&cnt, sizeof cnt) != sizeof cnt) {
syslog(LOG_ERR, "rstat: can't read cnt from kmem\n");
exit(1);
}
stats_all.s1.v_pgpgin = cnt.v_vnodepgsin;
stats_all.s1.v_pgpgout = cnt.v_vnodepgsout;
stats_all.s1.v_pswpin = cnt.v_swappgsin;
stats_all.s1.v_pswpout = cnt.v_swappgsout;
stats_all.s1.v_intr = cnt.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 = cnt.v_swtch;
if (kvm_read(kd, (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(kd, 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_data.ifi_ipackets;
stats_all.s1.if_opackets += ifnet.if_data.ifi_opackets;
stats_all.s1.if_ierrors += ifnet.if_data.ifi_ierrors;
stats_all.s1.if_oerrors += ifnet.if_data.ifi_oerrors;
stats_all.s1.if_collisions += ifnet.if_data.ifi_collisions;
off = (int) ifnet.if_next;
}
gettimeofday((struct timeval *)&stats_all.s3.curtime,
(struct timezone *) 0);
alarm(1);
}
setup()
{
struct ifnet ifnet;
int off;
char errbuf[_POSIX2_LINE_MAX];
int en;
if ((kd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, errbuf)) == NULL) {
syslog(LOG_ERR, "rpc.rstatd, %s", errbuf);
exit(1);
}
if ((en = kvm_nlist(kd, nl)) != 0) {
syslog(LOG_ERR, "rstatd: Can't get namelist. %d", en);
exit (1);
}
if (kvm_read(kd, (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(kd, 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(kd, nl) != 0) {
syslog(LOG_ERR, "rstatd: Can't get namelist.(d)");
exit (1);
}
if (kvm_read(kd, (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, RSTATVERS_ORIG, RSTATVERS_TIME);
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, RSTATVERS_ORIG, RSTATVERS_TIME);
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);
}