455 lines
11 KiB
C
455 lines
11 KiB
C
/* $NetBSD: rstat_proc.c,v 1.35 2000/06/29 06:26:33 mrg Exp $ */
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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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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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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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#else
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__RCSID("$NetBSD: rstat_proc.c,v 1.35 2000/06/29 06:26:33 mrg Exp $");
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#endif
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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 <sys/param.h>
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#include <sys/sched.h>
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#include <sys/socket.h>
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#include <errno.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 <signal.h>
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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 <syslog.h>
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#ifdef BSD
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#include <sys/sysctl.h>
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#include <uvm/uvm_extern.h>
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#include <sys/dkstat.h>
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#include "dkstats.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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/*
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* XXX
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*
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* this is a huge hack to stop `struct pmap' being
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* defined twice!
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*/
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#define _RPC_PMAP_PROT_H_
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#include <rpc/rpc.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 DK_NDRIVE
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#undef CPUSTATES
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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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#ifdef BSD
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#define BSD_CPUSTATES 5 /* Use protocol's idea of CPU states */
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int cp_xlat[CPUSTATES] = { CP_USER, CP_NICE, CP_SYS, CP_IDLE };
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#endif
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struct nlist nl[] = {
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#define X_IFNET 0
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{ "_ifnet" },
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{ NULL },
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};
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extern int dk_ndrive; /* From dkstats.c */
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extern struct _disk cur, last;
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int hz;
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char *memf = NULL, *nlistf = NULL;
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struct ifnet_head ifnetq; /* chain of ethernet interfaces */
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int numintfs;
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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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kvm_t *kfd;
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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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extern void dkreadstats(void);
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extern int dkinit(int, gid_t);
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void updatestat(int);
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void setup(void);
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void setup_kd_once(void);
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void stat_init(void);
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int havedisk(void);
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void rstat_service(struct svc_req *, SVCXPRT *);
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static int stat_is_init = 0;
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#ifndef FSCALE
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#define FSCALE (1 << 8)
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#endif
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void
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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(0);
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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_svc(void *arg, struct svc_req *rqstp)
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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_svc(void *arg, struct svc_req *rqstp)
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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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stats_all.s2.if_opackets = stats_all.s3.if_opackets;
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return (&stats_all.s2);
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}
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stats *
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rstatproc_stats_1_svc(void *arg, struct svc_req *rqstp)
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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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stats_all.s1.if_opackets = stats_all.s3.if_opackets;
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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_svc(void *arg, struct svc_req *rqstp)
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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_svc(void *arg, struct svc_req *rqstp)
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{
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return (rstatproc_havedisk_3_svc(arg, rqstp));
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}
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u_int *
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rstatproc_havedisk_1_svc(void *arg, struct svc_req *rqstp)
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{
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return (rstatproc_havedisk_3_svc(arg, rqstp));
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}
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void
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updatestat(int dummy)
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{
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long off;
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int i;
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size_t len;
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int mib[2];
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struct uvmexp uvmexp;
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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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syslog(LOG_DEBUG, "entering updatestat");
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#endif
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if (sincelastreq >= closedown) {
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#ifdef DEBUG
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syslog(LOG_DEBUG, "about to closedown");
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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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/*
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* dkreadstats reads in the "disk_count" as well as the "disklist"
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* statistics. It also retrieves "hz" and the "cp_time" array.
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*/
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dkreadstats();
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memset(stats_all.s3.dk_xfer, 0, sizeof(stats_all.s3.dk_xfer));
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for (i = 0; i < dk_ndrive && i < DK_NDRIVE; i++)
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stats_all.s3.dk_xfer[i] = cur.dk_xfer[i];
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#ifdef BSD
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for (i = 0; i < CPUSTATES; i++)
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stats_all.s3.cp_time[i] = cur.cp_time[cp_xlat[i]];
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#else
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if (kvm_read(kfd, (long)nl[X_CPTIME].n_value,
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(char *)stats_all.s3.cp_time,
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sizeof (stats_all.s3.cp_time))
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!= sizeof (stats_all.s3.cp_time)) {
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syslog(LOG_ERR, "can't read cp_time from kmem");
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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.s3.avenrun[0] = avrun[0] * FSCALE;
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stats_all.s3.avenrun[1] = avrun[1] * FSCALE;
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stats_all.s3.avenrun[2] = avrun[2] * FSCALE;
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mib[0] = CTL_KERN;
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mib[1] = KERN_BOOTTIME;
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len = sizeof(btm);
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if (sysctl(mib, 2, &btm, &len, NULL, 0) < 0) {
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syslog(LOG_ERR, "can't sysctl kern.boottime");
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exit(1);
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}
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stats_all.s3.boottime.tv_sec = btm.tv_sec;
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stats_all.s3.boottime.tv_usec = btm.tv_usec;
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#ifdef DEBUG
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syslog(LOG_DEBUG, "%d %d %d %d %d\n", stats_all.s3.cp_time[0],
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stats_all.s3.cp_time[1], stats_all.s3.cp_time[2],
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stats_all.s3.cp_time[3], stats_all.s3.cp_time[4]);
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#endif
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mib[0] = CTL_VM;
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mib[1] = VM_UVMEXP;
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len = sizeof(uvmexp);
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if (sysctl(mib, 2, &uvmexp, &len, NULL, 0) < 0) {
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syslog(LOG_ERR, "can't sysctl vm.uvmexp");
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exit(1);
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}
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stats_all.s3.v_pgpgin = uvmexp.fltanget;
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stats_all.s3.v_pgpgout = uvmexp.pdpageouts;
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stats_all.s3.v_pswpin = uvmexp.swapins;
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stats_all.s3.v_pswpout = uvmexp.swapouts;
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stats_all.s3.v_intr = uvmexp.intrs;
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stats_all.s3.v_swtch = uvmexp.swtch;
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gettimeofday(&tm, (struct timezone *) 0);
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stats_all.s3.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.s3.if_ipackets = 0;
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stats_all.s3.if_opackets = 0;
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stats_all.s3.if_ierrors = 0;
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stats_all.s3.if_oerrors = 0;
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stats_all.s3.if_collisions = 0;
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for (off = (long)ifnetq.tqh_first, i = 0; off && i < numintfs; i++) {
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if (kvm_read(kfd, off, (char *)&ifnet, sizeof ifnet) !=
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sizeof ifnet) {
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syslog(LOG_ERR, "can't read ifnet from kmem");
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exit(1);
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}
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stats_all.s3.if_ipackets += ifnet.if_data.ifi_ipackets;
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stats_all.s3.if_opackets += ifnet.if_data.ifi_opackets;
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stats_all.s3.if_ierrors += ifnet.if_data.ifi_ierrors;
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stats_all.s3.if_oerrors += ifnet.if_data.ifi_oerrors;
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stats_all.s3.if_collisions += ifnet.if_data.ifi_collisions;
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off = (long)ifnet.if_list.tqe_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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void
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setup_kd_once()
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{
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char errbuf[_POSIX2_LINE_MAX];
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kfd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, errbuf);
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if (kfd == NULL) {
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syslog(LOG_ERR, "%s", errbuf);
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exit (1);
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}
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}
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void
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setup()
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{
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struct ifnet ifnet;
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long off;
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static int is_kfd_setup = 0;
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/* setup() is called after each dormant->active
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* transition. Since we never close the kvm files
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* (there's no reason), make sure we don't open them
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* each time, as that can lead to exhaustion of all open
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* files! */
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if (!is_kfd_setup) {
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setup_kd_once();
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is_kfd_setup = 1;
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}
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if (kvm_nlist(kfd, nl) != 0) {
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syslog(LOG_ERR, "can't get namelist");
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exit (1);
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}
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if (kvm_read(kfd, (long)nl[X_IFNET].n_value, &ifnetq,
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sizeof ifnetq) != sizeof ifnetq) {
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syslog(LOG_ERR, "can't read ifnet queue head from kmem");
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exit(1);
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}
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numintfs = 0;
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for (off = (long)ifnetq.tqh_first; off;) {
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if (kvm_read(kfd, off, (char *)&ifnet, sizeof ifnet) !=
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sizeof ifnet) {
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syslog(LOG_ERR, "can't read ifnet from kmem");
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exit(1);
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}
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numintfs++;
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off = (long)ifnet.if_list.tqe_next;
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}
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dkinit(0, getgid());
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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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int
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havedisk()
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{
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return dk_ndrive != 0;
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}
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void
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rstat_service(struct svc_req *rqstp, 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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xdrproc_t xdr_argument, xdr_result;
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char *(*local) __P((void *, struct svc_req *));
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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 = (xdrproc_t)xdr_void;
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xdr_result = (xdrproc_t)xdr_statstime;
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switch (rqstp->rq_vers) {
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case RSTATVERS_ORIG:
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local = (char *(*) __P((void *, struct svc_req *)))
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rstatproc_stats_1_svc;
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break;
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case RSTATVERS_SWTCH:
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local = (char *(*) __P((void *, struct svc_req *)))
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rstatproc_stats_2_svc;
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break;
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case RSTATVERS_TIME:
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local = (char *(*) __P((void *, struct svc_req *)))
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rstatproc_stats_3_svc;
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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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}
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break;
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case RSTATPROC_HAVEDISK:
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xdr_argument = (xdrproc_t)xdr_void;
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xdr_result = (xdrproc_t)xdr_u_int;
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switch (rqstp->rq_vers) {
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case RSTATVERS_ORIG:
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local = (char *(*) __P((void *, struct svc_req *)))
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rstatproc_havedisk_1_svc;
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break;
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case RSTATVERS_SWTCH:
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local = (char *(*) __P((void *, struct svc_req *)))
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rstatproc_havedisk_2_svc;
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break;
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case RSTATVERS_TIME:
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local = (char *(*) __P((void *, struct svc_req *)))
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rstatproc_havedisk_3_svc;
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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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}
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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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memset((char *)&argument, 0, sizeof(argument));
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if (!svc_getargs(transp, xdr_argument, (caddr_t)&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, (caddr_t)&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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