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460 lines
11 KiB
C
460 lines
11 KiB
C
/*
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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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#ifndef lint
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/*static char sccsid[] = "from: @(#)rpc.rstatd.c 1.1 86/09/25 Copyr 1984 Sun Micro";*/
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/*static char sccsid[] = "from: @(#)rstat_proc.c 2.2 88/08/01 4.0 RPCSRC";*/
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static char rcsid[] = "$Id: rstat_proc.c,v 1.2 1994/10/15 13:39:54 davidg Exp $";
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#endif
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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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* Copyright (c) 1984 by Sun Microsystems, Inc.
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*/
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#include <fcntl.h>
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#include <kvm.h>
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#include <limits.h>
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#include <nlist.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <syslog.h>
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#include <rpc/rpc.h>
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#include <sys/socket.h>
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#include <sys/errno.h>
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#include <sys/param.h>
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#ifdef BSD
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#include <sys/vmmeter.h>
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#include <sys/dkstat.h>
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#else
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#include <sys/dk.h>
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#endif
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#include <net/if.h>
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#undef FSHIFT /* Use protocol's shift and scale values */
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#undef FSCALE
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#undef if_ipackets
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#undef if_ierrors
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#undef if_opackets
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#undef if_oerrors
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#undef if_collisions
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#include <rpcsvc/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_CNT 1
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{ "_cnt" },
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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_HZ 5
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{ "_hz" },
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#ifdef vax
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#define X_AVENRUN 6
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{ "_avenrun" },
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#endif
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"",
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};
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int firstifnet, numintfs; /* chain of ethernet interfaces */
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int stats_service();
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extern int from_inetd;
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int sincelastreq = 0; /* number of alarms since last request */
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extern int closedown;
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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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void updatestat();
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static stat_is_init = 0;
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static kvm_t *kd;
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extern int errno;
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#if defined(BSD)
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static int cp_time_xlat[RSTAT_CPUSTATES] = { CP_USER, CP_NICE, CP_SYS,
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CP_IDLE };
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static long bsd_cp_time[CPUSTATES];
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#endif
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#ifndef FSCALE
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#define FSCALE (1 << 8)
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#endif
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#ifndef BSD
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/*
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* BSD has the kvm facility for getting info from the
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* kernel. If you aren't on BSD, this surfices.
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*/
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int kmem;
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kvm_read(kd, off, addr, size)
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void * kd;
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unsigned long off, size;
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char *addr;
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{
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int len;
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if (lseek(kmem, (long)off, 0) == -1)
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return(-1);
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return(read(kmem, addr, size));
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}
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kvm_nlist(kd, nl)
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void * kd;
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struct nlist *nl;
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{
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int n = nlist("/vmunix", nl);
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if (nl[0].n_value == 0)
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return(n);
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if ((kmem = open("/dev/kmem", 0)) < 0)
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return(-1);
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return(0);
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}
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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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(void) signal(SIGALRM, updatestat);
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alarm(1);
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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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void
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updatestat()
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{
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int off, i, hz;
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struct vmmeter cnt;
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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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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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if (from_inetd)
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exit(0);
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else {
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stat_is_init = 0;
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return;
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}
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}
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sincelastreq++;
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if (kvm_read(kd, (long)nl[X_HZ].n_value, (char *)&hz, sizeof hz) != sizeof hz) {
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syslog(LOG_ERR, "rstat: can't read hz from kmem\n");
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exit(1);
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}
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#if defined(BSD)
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if (kvm_read(kd, (long)nl[X_CPTIME].n_value, (char *)bsd_cp_time, sizeof(bsd_cp_time))
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!= sizeof(bsd_cp_time)) {
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syslog(LOG_ERR, "rstat: can't read cp_time from kmem\n");
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exit(1);
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}
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for(i = 0; i < RSTAT_CPUSTATES ; i++)
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stats_all.s1.cp_time[i] = bsd_cp_time[cp_time_xlat[i]];
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#else
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if (kvm_read(kd, (long)nl[X_CPTIME].n_value, (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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syslog(LOG_ERR, "rstat: can't read cp_time from kmem\n");
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exit(1);
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}
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#endif
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#ifdef vax
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if (kvm_read(kd, (long)nl[X_AVENRUN].n_value, (char *)avrun, sizeof (avrun)) != sizeof (avrun)) {
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syslog(LOG_ERR, "rstat: can't read avenrun from kmem\n");
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exit(1);
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}
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#endif
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#ifdef BSD
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(void)getloadavg(avrun, sizeof(avrun) / sizeof(avrun[0]));
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#endif
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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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if (kvm_read(kd, (long)nl[X_BOOTTIME].n_value, (char *)&btm, sizeof (stats_all.s2.boottime))
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!= sizeof (stats_all.s2.boottime)) {
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syslog(LOG_ERR, "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 (kvm_read(kd, (long)nl[X_CNT].n_value, (char *)&cnt, sizeof cnt) != sizeof cnt) {
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syslog(LOG_ERR, "rstat: can't read cnt from kmem\n");
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exit(1);
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}
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stats_all.s1.v_pgpgin = cnt.v_vnodepgsin;
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stats_all.s1.v_pgpgout = cnt.v_vnodepgsout;
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stats_all.s1.v_pswpin = cnt.v_swappgsin;
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stats_all.s1.v_pswpout = cnt.v_swappgsout;
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stats_all.s1.v_intr = cnt.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 = cnt.v_swtch;
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if (kvm_read(kd, (long)nl[X_DKXFER].n_value, (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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syslog(LOG_ERR, "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 (kvm_read(kd, off, (char *)&ifnet, sizeof ifnet) != sizeof ifnet) {
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syslog(LOG_ERR, "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_data.ifi_ipackets;
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stats_all.s1.if_opackets += ifnet.if_data.ifi_opackets;
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stats_all.s1.if_ierrors += ifnet.if_data.ifi_ierrors;
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stats_all.s1.if_oerrors += ifnet.if_data.ifi_oerrors;
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stats_all.s1.if_collisions += ifnet.if_data.ifi_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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setup()
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{
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struct ifnet ifnet;
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int off;
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char errbuf[_POSIX2_LINE_MAX];
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int en;
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if ((kd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, errbuf)) == NULL) {
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syslog(LOG_ERR, "rpc.rstatd, %s", errbuf);
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exit(1);
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}
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if ((en = kvm_nlist(kd, nl)) != 0) {
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syslog(LOG_ERR, "rstatd: Can't get namelist. %d", en);
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exit (1);
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}
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if (kvm_read(kd, (long)nl[X_IFNET].n_value, &firstifnet,
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sizeof(int)) != sizeof(int)) {
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syslog(LOG_ERR, "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 (kvm_read(kd, off, (char *)&ifnet, sizeof ifnet) != sizeof ifnet) {
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syslog(LOG_ERR, "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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havedisk()
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{
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int i, cnt;
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long xfer[DK_NDRIVE];
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if (kvm_nlist(kd, nl) != 0) {
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syslog(LOG_ERR, "rstatd: Can't get namelist.(d)");
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exit (1);
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}
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if (kvm_read(kd, (long)nl[X_DKXFER].n_value, (char *)xfer, sizeof xfer)!= sizeof xfer) {
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syslog(LOG_ERR, "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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void
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rstat_service(rqstp, transp)
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struct svc_req *rqstp;
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SVCXPRT *transp;
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{
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union {
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int fill;
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} argument;
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char *result;
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bool_t (*xdr_argument)(), (*xdr_result)();
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char *(*local)();
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switch (rqstp->rq_proc) {
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case NULLPROC:
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(void)svc_sendreply(transp, xdr_void, (char *)NULL);
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goto leave;
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case RSTATPROC_STATS:
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xdr_argument = xdr_void;
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xdr_result = xdr_statstime;
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switch (rqstp->rq_vers) {
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case RSTATVERS_ORIG:
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local = (char *(*)()) rstatproc_stats_1;
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break;
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case RSTATVERS_SWTCH:
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local = (char *(*)()) rstatproc_stats_2;
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break;
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case RSTATVERS_TIME:
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local = (char *(*)()) rstatproc_stats_3;
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break;
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default:
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svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME);
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goto leave;
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/*NOTREACHED*/
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}
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break;
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case RSTATPROC_HAVEDISK:
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xdr_argument = xdr_void;
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xdr_result = xdr_u_int;
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switch (rqstp->rq_vers) {
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case RSTATVERS_ORIG:
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local = (char *(*)()) rstatproc_havedisk_1;
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break;
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case RSTATVERS_SWTCH:
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local = (char *(*)()) rstatproc_havedisk_2;
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break;
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case RSTATVERS_TIME:
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local = (char *(*)()) rstatproc_havedisk_3;
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break;
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default:
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svcerr_progvers(transp, RSTATVERS_ORIG, RSTATVERS_TIME);
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goto leave;
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/*NOTREACHED*/
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}
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break;
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default:
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svcerr_noproc(transp);
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goto leave;
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}
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bzero((char *)&argument, sizeof(argument));
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if (!svc_getargs(transp, xdr_argument, &argument)) {
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svcerr_decode(transp);
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goto leave;
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}
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result = (*local)(&argument, rqstp);
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if (result != NULL && !svc_sendreply(transp, xdr_result, result)) {
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svcerr_systemerr(transp);
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}
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if (!svc_freeargs(transp, xdr_argument, &argument)) {
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(void)fprintf(stderr, "unable to free arguments\n");
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exit(1);
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}
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leave:
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if (from_inetd)
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exit(0);
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}
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