504 lines
12 KiB
C
504 lines
12 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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#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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#endif
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static const char rcsid[] =
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"$FreeBSD$";
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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/types.h>
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#include <sys/dkstat.h>
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#include <sys/socket.h>
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#include <sys/sysctl.h>
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#include <sys/time.h>
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#include <sys/vmmeter.h>
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#include <sys/param.h>
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#include <err.h>
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#include <errno.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 <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 <unistd.h>
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#include <devstat.h>
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#include <net/if.h>
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#include <net/if_mib.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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{ "" },
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};
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int havedisk(void);
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void updatexfers(int, int *);
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void setup(void);
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int stats_service(void);
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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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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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#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(void)
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{
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stat_is_init = 1;
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setup();
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alarm(0);
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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_svc(void *argp, 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 *argp, 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.s2);
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}
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stats *
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rstatproc_stats_1_svc(void *argp, 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.s1);
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}
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u_int *
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rstatproc_havedisk_3_svc(void *argp, 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 *argp, struct svc_req *rqstp)
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{
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return(rstatproc_havedisk_3_svc(argp, rqstp));
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}
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u_int *
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rstatproc_havedisk_1_svc(void *argp, struct svc_req *rqstp)
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{
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return(rstatproc_havedisk_3_svc(argp, rqstp));
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}
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void
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updatestat(void)
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{
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int i, hz;
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struct clockinfo clockrate;
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struct vmmeter cnt;
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struct ifmibdata ifmd;
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double avrun[3];
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struct timeval tm, btm;
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int mib[6];
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size_t len;
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int ifcount;
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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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kvm_close(kd);
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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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mib[0] = CTL_KERN;
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mib[1] = KERN_CLOCKRATE;
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len = sizeof clockrate;
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if (sysctl(mib, 2, &clockrate, &len, 0, 0) < 0) {
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syslog(LOG_ERR, "sysctl(kern.clockrate): %m");
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exit(1);
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}
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hz = clockrate.hz;
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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");
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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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(void)getloadavg(avrun, sizeof(avrun) / sizeof(avrun[0]));
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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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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, 0, 0) < 0) {
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syslog(LOG_ERR, "sysctl(kern.boottime): %m");
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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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/* XXX - should use sysctl */
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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");
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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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/* update disk transfers */
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updatexfers(RSTAT_DK_NDRIVE, stats_all.s1.dk_xfer);
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mib[0] = CTL_NET;
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mib[1] = PF_LINK;
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mib[2] = NETLINK_GENERIC;
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mib[3] = IFMIB_SYSTEM;
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mib[4] = IFMIB_IFCOUNT;
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len = sizeof ifcount;
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if (sysctl(mib, 5, &ifcount, &len, 0, 0) < 0) {
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syslog(LOG_ERR, "sysctl(net.link.generic.system.ifcount): %m");
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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 (i = 1; i <= ifcount; i++) {
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len = sizeof ifmd;
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mib[3] = IFMIB_IFDATA;
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mib[4] = i;
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mib[5] = IFDATA_GENERAL;
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if (sysctl(mib, 6, &ifmd, &len, 0, 0) < 0) {
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if (errno == ENOENT)
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continue;
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syslog(LOG_ERR, "sysctl(net.link.ifdata.%d.general)"
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": %m", i);
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exit(1);
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}
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stats_all.s1.if_ipackets += ifmd.ifmd_data.ifi_ipackets;
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stats_all.s1.if_opackets += ifmd.ifmd_data.ifi_opackets;
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stats_all.s1.if_ierrors += ifmd.ifmd_data.ifi_ierrors;
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stats_all.s1.if_oerrors += ifmd.ifmd_data.ifi_oerrors;
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stats_all.s1.if_collisions += ifmd.ifmd_data.ifi_collisions;
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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()
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{
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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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}
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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(void)
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{
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register int i;
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struct statinfo stats;
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int num_devices, retval = 0;
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if ((num_devices = getnumdevs()) < 0) {
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syslog(LOG_ERR, "rstatd: can't get number of devices: %s",
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devstat_errbuf);
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exit(1);
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}
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if (checkversion() < 0) {
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syslog(LOG_ERR, "rstatd: %s", devstat_errbuf);
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exit(1);
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}
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stats.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo));
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bzero(stats.dinfo, sizeof(struct devinfo));
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if (getdevs(&stats) == -1) {
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syslog(LOG_ERR, "rstatd: can't get device list: %s",
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devstat_errbuf);
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exit(1);
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}
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for (i = 0; i < stats.dinfo->numdevs; i++) {
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if (((stats.dinfo->devices[i].device_type
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& DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_DIRECT)
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&& ((stats.dinfo->devices[i].device_type
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& DEVSTAT_TYPE_PASS) == 0)) {
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retval = 1;
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break;
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}
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}
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if (stats.dinfo->mem_ptr)
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free(stats.dinfo->mem_ptr);
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free(stats.dinfo);
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return(retval);
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}
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void
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updatexfers(int numdevs, int *devs)
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{
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register int i, j, t;
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struct statinfo stats;
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int num_devices = 0;
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u_int64_t total_transfers;
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if ((num_devices = getnumdevs()) < 0) {
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syslog(LOG_ERR, "rstatd: can't get number of devices: %s",
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devstat_errbuf);
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exit(1);
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}
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if (checkversion() < 0) {
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syslog(LOG_ERR, "rstatd: %s", devstat_errbuf);
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exit(1);
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}
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stats.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo));
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bzero(stats.dinfo, sizeof(struct devinfo));
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if (getdevs(&stats) == -1) {
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syslog(LOG_ERR, "rstatd: can't get device list: %s",
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devstat_errbuf);
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exit(1);
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}
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for (i = 0, j = 0; i < stats.dinfo->numdevs && j < numdevs; i++) {
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if (((stats.dinfo->devices[i].device_type
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& DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_DIRECT)
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&& ((stats.dinfo->devices[i].device_type
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& DEVSTAT_TYPE_PASS) == 0)) {
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total_transfers = stats.dinfo->devices[i].num_reads +
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stats.dinfo->devices[i].num_writes +
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stats.dinfo->devices[i].num_other;
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/*
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* XXX KDM If the total transfers for this device
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* are greater than the amount we can fit in a
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* signed integer, just set them to the maximum
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* amount we can fit in a signed integer. I have a
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* feeling that the rstat protocol assumes 32-bit
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* integers, so this could well break on a 64-bit
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* architecture like the Alpha.
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*/
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if (total_transfers > INT_MAX)
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t = INT_MAX;
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else
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t = total_transfers;
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devs[j] = t;
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j++;
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}
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}
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if (stats.dinfo->mem_ptr)
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free(stats.dinfo->mem_ptr);
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free(stats.dinfo);
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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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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, (xdrproc_t)xdr_void, 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_svc;
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break;
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case RSTATVERS_SWTCH:
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local = (char *(*)()) rstatproc_stats_2_svc;
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break;
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case RSTATVERS_TIME:
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local = (char *(*)()) 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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/*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_svc;
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break;
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case RSTATVERS_SWTCH:
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local = (char *(*)()) rstatproc_havedisk_2_svc;
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break;
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case RSTATVERS_TIME:
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local = (char *(*)()) 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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/*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, (xdrproc_t)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 &&
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!svc_sendreply(transp, (xdrproc_t)xdr_result, result)) {
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svcerr_systemerr(transp);
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}
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if (!svc_freeargs(transp, (xdrproc_t)xdr_argument, &argument))
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errx(1, "unable to free arguments");
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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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