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353 lines
8.6 KiB
C
353 lines
8.6 KiB
C
/* @(#)rstat_proc.c 2.2 88/08/01 4.0 RPCSRC */
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#ifndef lint
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static char sccsid[] = "@(#)rpc.rstatd.c 1.1 86/09/25 Copyr 1984 Sun Micro";
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#endif
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/*
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* Copyright (c) 1984 by Sun Microsystems, Inc.
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*/
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/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*/
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/*
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* rstat service: built with rstat.x and derived from rpc.rstatd.c
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*/
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#include <signal.h>
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#include <stdio.h>
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#include <rpc/rpc.h>
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#include <sys/socket.h>
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#include <nlist.h>
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#include <sys/dk.h>
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#include <sys/errno.h>
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#include <sys/vmmeter.h>
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#include <net/if.h>
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#include "rstat.h"
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struct nlist nl[] = {
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#define X_CPTIME 0
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{ "_cp_time" },
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#define X_SUM 1
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{ "_sum" },
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#define X_IFNET 2
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{ "_ifnet" },
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#define X_DKXFER 3
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{ "_dk_xfer" },
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#define X_BOOTTIME 4
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{ "_boottime" },
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#define X_AVENRUN 5
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{ "_avenrun" },
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#define X_HZ 6
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{ "_hz" },
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"",
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};
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int kmem;
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int firstifnet, numintfs; /* chain of ethernet interfaces */
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int stats_service();
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/*
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* Define EXIT_WHEN_IDLE if you are able to have this program invoked
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* automatically on demand (as from inetd). When defined, the service
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* will terminated after being idle for 20 seconds.
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*/
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int sincelastreq = 0; /* number of alarms since last request */
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#ifdef EXIT_WHEN_IDLE
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#define CLOSEDOWN 20 /* how long to wait before exiting */
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#endif /* def EXIT_WHEN_IDLE */
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union {
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struct stats s1;
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struct statsswtch s2;
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struct statstime s3;
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} stats_all;
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int updatestat();
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static stat_is_init = 0;
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extern int errno;
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#ifndef FSCALE
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#define FSCALE (1 << 8)
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#endif
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stat_init()
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{
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stat_is_init = 1;
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setup();
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updatestat();
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alarm(1);
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signal(SIGALRM, updatestat);
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sleep(1); /* allow for one wake-up */
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}
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statstime *
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rstatproc_stats_3()
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{
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if (! stat_is_init)
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stat_init();
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sincelastreq = 0;
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return(&stats_all.s3);
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}
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statsswtch *
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rstatproc_stats_2()
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{
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if (! stat_is_init)
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stat_init();
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sincelastreq = 0;
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return(&stats_all.s2);
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}
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stats *
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rstatproc_stats_1()
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{
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if (! stat_is_init)
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stat_init();
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sincelastreq = 0;
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return(&stats_all.s1);
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}
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u_int *
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rstatproc_havedisk_3()
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{
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static u_int have;
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if (! stat_is_init)
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stat_init();
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sincelastreq = 0;
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have = havedisk();
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return(&have);
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}
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u_int *
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rstatproc_havedisk_2()
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{
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return(rstatproc_havedisk_3());
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}
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u_int *
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rstatproc_havedisk_1()
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{
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return(rstatproc_havedisk_3());
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}
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updatestat()
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{
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int off, i, hz;
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struct vmmeter sum;
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struct ifnet ifnet;
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double avrun[3];
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struct timeval tm, btm;
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#ifdef DEBUG
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fprintf(stderr, "entering updatestat\n");
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#endif
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#ifdef EXIT_WHEN_IDLE
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if (sincelastreq >= CLOSEDOWN) {
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#ifdef DEBUG
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fprintf(stderr, "about to closedown\n");
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#endif
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exit(0);
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}
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sincelastreq++;
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#endif /* def EXIT_WHEN_IDLE */
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if (lseek(kmem, (long)nl[X_HZ].n_value, 0) == -1) {
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fprintf(stderr, "rstat: can't seek in kmem\n");
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exit(1);
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}
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if (read(kmem, (char *)&hz, sizeof hz) != sizeof hz) {
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fprintf(stderr, "rstat: can't read hz from kmem\n");
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exit(1);
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}
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if (lseek(kmem, (long)nl[X_CPTIME].n_value, 0) == -1) {
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fprintf(stderr, "rstat: can't seek in kmem\n");
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exit(1);
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}
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if (read(kmem, (char *)stats_all.s1.cp_time, sizeof (stats_all.s1.cp_time))
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!= sizeof (stats_all.s1.cp_time)) {
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fprintf(stderr, "rstat: can't read cp_time from kmem\n");
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exit(1);
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}
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if (lseek(kmem, (long)nl[X_AVENRUN].n_value, 0) ==-1) {
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fprintf(stderr, "rstat: can't seek in kmem\n");
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exit(1);
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}
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#ifdef vax
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if (read(kmem, (char *)avrun, sizeof (avrun)) != sizeof (avrun)) {
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fprintf(stderr, "rstat: can't read avenrun from kmem\n");
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exit(1);
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}
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stats_all.s2.avenrun[0] = avrun[0] * FSCALE;
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stats_all.s2.avenrun[1] = avrun[1] * FSCALE;
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stats_all.s2.avenrun[2] = avrun[2] * FSCALE;
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#endif
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if (lseek(kmem, (long)nl[X_BOOTTIME].n_value, 0) == -1) {
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fprintf(stderr, "rstat: can't seek in kmem\n");
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exit(1);
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}
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if (read(kmem, (char *)&btm, sizeof (stats_all.s2.boottime))
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!= sizeof (stats_all.s2.boottime)) {
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fprintf(stderr, "rstat: can't read boottime from kmem\n");
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exit(1);
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}
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stats_all.s2.boottime.tv_sec = btm.tv_sec;
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stats_all.s2.boottime.tv_usec = btm.tv_usec;
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#ifdef DEBUG
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fprintf(stderr, "%d %d %d %d\n", stats_all.s1.cp_time[0],
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stats_all.s1.cp_time[1], stats_all.s1.cp_time[2], stats_all.s1.cp_time[3]);
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#endif
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if (lseek(kmem, (long)nl[X_SUM].n_value, 0) ==-1) {
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fprintf(stderr, "rstat: can't seek in kmem\n");
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exit(1);
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}
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if (read(kmem, (char *)&sum, sizeof sum) != sizeof sum) {
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fprintf(stderr, "rstat: can't read sum from kmem\n");
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exit(1);
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}
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stats_all.s1.v_pgpgin = sum.v_pgpgin;
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stats_all.s1.v_pgpgout = sum.v_pgpgout;
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stats_all.s1.v_pswpin = sum.v_pswpin;
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stats_all.s1.v_pswpout = sum.v_pswpout;
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stats_all.s1.v_intr = sum.v_intr;
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gettimeofday(&tm, (struct timezone *) 0);
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stats_all.s1.v_intr -= hz*(tm.tv_sec - btm.tv_sec) +
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hz*(tm.tv_usec - btm.tv_usec)/1000000;
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stats_all.s2.v_swtch = sum.v_swtch;
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if (lseek(kmem, (long)nl[X_DKXFER].n_value, 0) == -1) {
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fprintf(stderr, "rstat: can't seek in kmem\n");
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exit(1);
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}
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if (read(kmem, (char *)stats_all.s1.dk_xfer, sizeof (stats_all.s1.dk_xfer))
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!= sizeof (stats_all.s1.dk_xfer)) {
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fprintf(stderr, "rstat: can't read dk_xfer from kmem\n");
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exit(1);
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}
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stats_all.s1.if_ipackets = 0;
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stats_all.s1.if_opackets = 0;
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stats_all.s1.if_ierrors = 0;
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stats_all.s1.if_oerrors = 0;
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stats_all.s1.if_collisions = 0;
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for (off = firstifnet, i = 0; off && i < numintfs; i++) {
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if (lseek(kmem, (long)off, 0) == -1) {
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fprintf(stderr, "rstat: can't seek in kmem\n");
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exit(1);
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}
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if (read(kmem, (char *)&ifnet, sizeof ifnet) != sizeof ifnet) {
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fprintf(stderr, "rstat: can't read ifnet from kmem\n");
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exit(1);
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}
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stats_all.s1.if_ipackets += ifnet.if_ipackets;
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stats_all.s1.if_opackets += ifnet.if_opackets;
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stats_all.s1.if_ierrors += ifnet.if_ierrors;
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stats_all.s1.if_oerrors += ifnet.if_oerrors;
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stats_all.s1.if_collisions += ifnet.if_collisions;
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off = (int) ifnet.if_next;
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}
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gettimeofday((struct timeval *)&stats_all.s3.curtime,
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(struct timezone *) 0);
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alarm(1);
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}
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static
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setup()
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{
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struct ifnet ifnet;
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int off;
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nlist("/vmunix", nl);
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if (nl[0].n_value == 0) {
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fprintf(stderr, "rstat: Variables missing from namelist\n");
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exit (1);
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}
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if ((kmem = open("/dev/kmem", 0)) < 0) {
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fprintf(stderr, "rstat: can't open kmem\n");
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exit(1);
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}
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off = nl[X_IFNET].n_value;
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if (lseek(kmem, (long)off, 0) == -1) {
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fprintf(stderr, "rstat: can't seek in kmem\n");
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exit(1);
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}
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if (read(kmem, (char *)&firstifnet, sizeof(int)) != sizeof (int)) {
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fprintf(stderr, "rstat: can't read firstifnet from kmem\n");
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exit(1);
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}
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numintfs = 0;
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for (off = firstifnet; off;) {
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if (lseek(kmem, (long)off, 0) == -1) {
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fprintf(stderr, "rstat: can't seek in kmem\n");
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exit(1);
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}
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if (read(kmem, (char *)&ifnet, sizeof ifnet) != sizeof ifnet) {
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fprintf(stderr, "rstat: can't read ifnet from kmem\n");
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exit(1);
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}
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numintfs++;
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off = (int) ifnet.if_next;
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}
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}
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/*
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* returns true if have a disk
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*/
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static
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havedisk()
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{
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int i, cnt;
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long xfer[DK_NDRIVE];
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nlist("/vmunix", nl);
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if (nl[X_DKXFER].n_value == 0) {
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fprintf(stderr, "rstat: Variables missing from namelist\n");
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exit (1);
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}
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if ((kmem = open("/dev/kmem", 0)) < 0) {
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fprintf(stderr, "rstat: can't open kmem\n");
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exit(1);
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}
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if (lseek(kmem, (long)nl[X_DKXFER].n_value, 0) == -1) {
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fprintf(stderr, "rstat: can't seek in kmem\n");
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exit(1);
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}
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if (read(kmem, (char *)xfer, sizeof xfer)!= sizeof xfer) {
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fprintf(stderr, "rstat: can't read kmem\n");
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exit(1);
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}
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cnt = 0;
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for (i=0; i < DK_NDRIVE; i++)
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cnt += xfer[i];
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return (cnt != 0);
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}
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