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rstatd -- from FreeBSD-1.1.5.1, with changes for 4.4-Lite kvm interface.

Browse Source 
Original rstatd by John Brezak
Submitted by:	Geoff.
This commit is contained in:
Geoff Rehmet 1994-08-28 14:49:04 +00:00
parent 82df480e9f
commit 0c0b205ceb
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/cvs2svn/branches/FBSD_1/; revision=2334
4 changed files with 647 additions and 0 deletions
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10
libexec/rpc.rstatd/Makefile Normal file
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# $Id: Makefile,v 1.2 1993/11/10 03:45:40 smace Exp $
PROG = rpc.rstatd
SRCS = rstatd.c rstat_proc.c
MAN8 = rpc.rstatd.8
DPADD= ${LIBRPCSVC} ${LIBUTIL} ${LIBKVM}
LDADD= -lrpcsvc -lutil -lkvm
.include <bsd.prog.mk>

61
libexec/rpc.rstatd/rpc.rstatd.8 Normal file
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.\" -*- nroff -*-
.\"
.\" Copyright (c) 1985, 1991 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by the University of
.\" California, Berkeley and its contributors.
.\" 4. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" $Id: rpc.rstatd.8,v 1.1 1993/09/16 00:27:45 jtc Exp $
.\"
.Dd June 7, 1993
.Dt RPC.RSTATD 8
.Os BSD 4.3
.Sh NAME
.Nm rpc.rstatd
.Nd kernel statistics server
.Sh SYNOPSIS
.Nm /usr/libexec/rpc.rstatd
.Sh DESCRIPTION
.Nm rpc.rstatd
is a server which returns performance statistics obtained from the kernel.
These statistics are read using the
.Xr rup 1
command.
The
.Nm rpc.rstatd
daemon is normally invoked by
.Xr inetd 8 .
.Pp
.Nm rpc.rstatd
uses an RPC protocol defined in
.Pa /usr/include/rpcsvc/rstat.x .
.Sh SEE ALSO
.Xr rup 1 ,
.Xr inetd 8

459
libexec/rpc.rstatd/rstat_proc.c Normal file
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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";*/
static char rcsid[] = "$Id: rstat_proc.c,v 1.2 1993/09/23 18:48:55 jtc 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)
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_pgpgin;
stats_all.s1.v_pgpgout = cnt.v_pgpgout;
stats_all.s1.v_pswpin = cnt.v_pswpin;
stats_all.s1.v_pswpout = cnt.v_pswpout;
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);
}

117
libexec/rpc.rstatd/rstatd.c Normal file
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/*-
* Copyright (c) 1993, John Brezak
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char rcsid[] = "$Id: rstatd.c,v 1.1 1993/09/16 00:27:49 jtc Exp $";
#endif /* not lint */
#include <stdio.h>
#include <rpc/rpc.h>
#include <signal.h>
#include <syslog.h>
#include <rpcsvc/rstat.h>
extern void rstat_service();
int from_inetd = 1; /* started from inetd ? */
int closedown = 20; /* how long to wait before going dormant */
void
cleanup()
{
(void) pmap_unset(RSTATPROG, RSTATVERS_TIME);
(void) pmap_unset(RSTATPROG, RSTATVERS_SWTCH);
(void) pmap_unset(RSTATPROG, RSTATVERS_ORIG);
exit(0);
}
main(argc, argv)
int argc;
char *argv[];
{
SVCXPRT *transp;
int sock = 0;
int proto = 0;
struct sockaddr_in from;
int fromlen;
if (argc == 2)
closedown = atoi(argv[1]);
if (closedown <= 0)
closedown = 20;
/*
* See if inetd started us
*/
if (getsockname(0, (struct sockaddr *)&from, &fromlen) < 0) {
from_inetd = 0;
sock = RPC_ANYSOCK;
proto = IPPROTO_UDP;
}
if (!from_inetd) {
daemon(0, 0);
(void)pmap_unset(RSTATPROG, RSTATVERS_TIME);
(void)pmap_unset(RSTATPROG, RSTATVERS_SWTCH);
(void)pmap_unset(RSTATPROG, RSTATVERS_ORIG);
(void) signal(SIGINT, cleanup);
(void) signal(SIGTERM, cleanup);
(void) signal(SIGHUP, cleanup);
}
openlog("rpc.rstatd", LOG_CONS|LOG_PID, LOG_DAEMON);
transp = svcudp_create(sock);
if (transp == NULL) {
syslog(LOG_ERR, "cannot create udp service.");
exit(1);
}
if (!svc_register(transp, RSTATPROG, RSTATVERS_TIME, rstat_service, proto)) {
syslog(LOG_ERR, "unable to register (RSTATPROG, RSTATVERS_TIME, udp).");
exit(1);
}
if (!svc_register(transp, RSTATPROG, RSTATVERS_SWTCH, rstat_service, proto)) {
syslog(LOG_ERR, "unable to register (RSTATPROG, RSTATVERS_SWTCH, udp).");
exit(1);
}
if (!svc_register(transp, RSTATPROG, RSTATVERS_ORIG, rstat_service, proto)) {
syslog(LOG_ERR, "unable to register (RSTATPROG, RSTATVERS_ORIG, udp).");
exit(1);
}
svc_run();
syslog(LOG_ERR, "svc_run returned");
exit(1);
}