4.4BSD/usr/src/lib/librpc/rpcsvc/rstat_proc.c
/* @(#)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 <signal.h>
#include <stdio.h>
#include <rpc/rpc.h>
#include <sys/socket.h>
#include <nlist.h>
#include <sys/dk.h>
#include <sys/errno.h>
#include <sys/vmmeter.h>
#include <net/if.h>
#include "rstat.h"
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_AVENRUN 5
{ "_avenrun" },
#define X_HZ 6
{ "_hz" },
"",
};
int kmem;
int firstifnet, numintfs; /* chain of ethernet interfaces */
int stats_service();
/*
* Define EXIT_WHEN_IDLE if you are able to have this program invoked
* automatically on demand (as from inetd). When defined, the service
* will terminated after being idle for 20 seconds.
*/
int sincelastreq = 0; /* number of alarms since last request */
#ifdef EXIT_WHEN_IDLE
#define CLOSEDOWN 20 /* how long to wait before exiting */
#endif /* def EXIT_WHEN_IDLE */
union {
struct stats s1;
struct statsswtch s2;
struct statstime s3;
} stats_all;
int updatestat();
static stat_is_init = 0;
extern int errno;
#ifndef FSCALE
#define FSCALE (1 << 8)
#endif
stat_init()
{
stat_is_init = 1;
setup();
updatestat();
alarm(1);
signal(SIGALRM, updatestat);
sleep(1); /* allow for one wake-up */
}
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());
}
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
#ifdef EXIT_WHEN_IDLE
if (sincelastreq >= CLOSEDOWN) {
#ifdef DEBUG
fprintf(stderr, "about to closedown\n");
#endif
exit(0);
}
sincelastreq++;
#endif /* def EXIT_WHEN_IDLE */
if (lseek(kmem, (long)nl[X_HZ].n_value, 0) == -1) {
fprintf(stderr, "rstat: can't seek in kmem\n");
exit(1);
}
if (read(kmem, (char *)&hz, sizeof hz) != sizeof hz) {
fprintf(stderr, "rstat: can't read hz from kmem\n");
exit(1);
}
if (lseek(kmem, (long)nl[X_CPTIME].n_value, 0) == -1) {
fprintf(stderr, "rstat: can't seek in kmem\n");
exit(1);
}
if (read(kmem, (char *)stats_all.s1.cp_time, sizeof (stats_all.s1.cp_time))
!= sizeof (stats_all.s1.cp_time)) {
fprintf(stderr, "rstat: can't read cp_time from kmem\n");
exit(1);
}
if (lseek(kmem, (long)nl[X_AVENRUN].n_value, 0) ==-1) {
fprintf(stderr, "rstat: can't seek in kmem\n");
exit(1);
}
#ifdef vax
if (read(kmem, (char *)avrun, sizeof (avrun)) != sizeof (avrun)) {
fprintf(stderr, "rstat: can't read avenrun from kmem\n");
exit(1);
}
stats_all.s2.avenrun[0] = avrun[0] * FSCALE;
stats_all.s2.avenrun[1] = avrun[1] * FSCALE;
stats_all.s2.avenrun[2] = avrun[2] * FSCALE;
#endif
if (lseek(kmem, (long)nl[X_BOOTTIME].n_value, 0) == -1) {
fprintf(stderr, "rstat: can't seek in kmem\n");
exit(1);
}
if (read(kmem, (char *)&btm, sizeof (stats_all.s2.boottime))
!= sizeof (stats_all.s2.boottime)) {
fprintf(stderr, "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 (lseek(kmem, (long)nl[X_SUM].n_value, 0) ==-1) {
fprintf(stderr, "rstat: can't seek in kmem\n");
exit(1);
}
if (read(kmem, (char *)&sum, sizeof sum) != sizeof sum) {
fprintf(stderr, "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 (lseek(kmem, (long)nl[X_DKXFER].n_value, 0) == -1) {
fprintf(stderr, "rstat: can't seek in kmem\n");
exit(1);
}
if (read(kmem, (char *)stats_all.s1.dk_xfer, sizeof (stats_all.s1.dk_xfer))
!= sizeof (stats_all.s1.dk_xfer)) {
fprintf(stderr, "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 (lseek(kmem, (long)off, 0) == -1) {
fprintf(stderr, "rstat: can't seek in kmem\n");
exit(1);
}
if (read(kmem, (char *)&ifnet, sizeof ifnet) != sizeof ifnet) {
fprintf(stderr, "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);
}
static
setup()
{
struct ifnet ifnet;
int off;
nlist("/vmunix", nl);
if (nl[0].n_value == 0) {
fprintf(stderr, "rstat: Variables missing from namelist\n");
exit (1);
}
if ((kmem = open("/dev/kmem", 0)) < 0) {
fprintf(stderr, "rstat: can't open kmem\n");
exit(1);
}
off = nl[X_IFNET].n_value;
if (lseek(kmem, (long)off, 0) == -1) {
fprintf(stderr, "rstat: can't seek in kmem\n");
exit(1);
}
if (read(kmem, (char *)&firstifnet, sizeof(int)) != sizeof (int)) {
fprintf(stderr, "rstat: can't read firstifnet from kmem\n");
exit(1);
}
numintfs = 0;
for (off = firstifnet; off;) {
if (lseek(kmem, (long)off, 0) == -1) {
fprintf(stderr, "rstat: can't seek in kmem\n");
exit(1);
}
if (read(kmem, (char *)&ifnet, sizeof ifnet) != sizeof ifnet) {
fprintf(stderr, "rstat: can't read ifnet from kmem\n");
exit(1);
}
numintfs++;
off = (int) ifnet.if_next;
}
}
/*
* returns true if have a disk
*/
static
havedisk()
{
int i, cnt;
long xfer[DK_NDRIVE];
nlist("/vmunix", nl);
if (nl[X_DKXFER].n_value == 0) {
fprintf(stderr, "rstat: Variables missing from namelist\n");
exit (1);
}
if ((kmem = open("/dev/kmem", 0)) < 0) {
fprintf(stderr, "rstat: can't open kmem\n");
exit(1);
}
if (lseek(kmem, (long)nl[X_DKXFER].n_value, 0) == -1) {
fprintf(stderr, "rstat: can't seek in kmem\n");
exit(1);
}
if (read(kmem, (char *)xfer, sizeof xfer)!= sizeof xfer) {
fprintf(stderr, "rstat: can't read kmem\n");
exit(1);
}
cnt = 0;
for (i=0; i < DK_NDRIVE; i++)
cnt += xfer[i];
return (cnt != 0);
}