mirror of
https://github.com/freebsd/freebsd-src.git
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Convert this program to use sysctl rather than kvm for some of its
statistics. Unfortunately, the coverage of sysctl isn't good enough to do all of them :-( .
This commit is contained in:
Garrett Wollman
parent
32dc5e88bf
commit
e831f30876
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=20333
@ -29,7 +29,7 @@
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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 $";
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static char rcsid[] = "$Id: rstat_proc.c,v 1.3 1995/05/30 05:46:28 rgrimes Exp $";
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#endif
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/*
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@ -38,6 +38,15 @@ static char rcsid[] = "$Id: rstat_proc.c,v 1.2 1994/10/15 13:39:54 davidg Exp $"
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* Copyright (c) 1984 by Sun Microsystems, Inc.
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*/
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/dkstat.h>
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#include <sys/errno.h>
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#include <sys/socket.h>
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#include <sys/sysctl.h>
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#include <sys/time.h>
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#include <sys/vmmeter.h>
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#include <fcntl.h>
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#include <kvm.h>
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#include <limits.h>
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@ -48,17 +57,10 @@ static char rcsid[] = "$Id: rstat_proc.c,v 1.2 1994/10/15 13:39:54 davidg Exp $"
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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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#include <net/if_mib.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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@ -74,21 +76,12 @@ struct nlist nl[] = {
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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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#define X_DKXFER 2
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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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#define X_DKNDRIVE 3
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{ "_dk_ndrive" },
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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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@ -106,49 +99,15 @@ 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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@ -213,10 +172,14 @@ void
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updatestat()
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{
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int off, i, hz;
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struct clockinfo clockrate;
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struct vmmeter cnt;
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struct ifnet ifnet;
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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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@ -234,11 +197,15 @@ updatestat()
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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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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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#if defined(BSD)
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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\n");
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@ -246,30 +213,21 @@ updatestat()
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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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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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@ -279,6 +237,7 @@ updatestat()
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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\n");
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exit(1);
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@ -293,28 +252,45 @@ updatestat()
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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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/* XXX - should use sysctl */
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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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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 (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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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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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 += 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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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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@ -338,22 +314,6 @@ setup()
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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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@ -362,21 +322,19 @@ setup()
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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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int 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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if (kvm_read(kd, (long)nl[X_DKNDRIVE].n_value, (char *)&dk_ndrive,
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sizeof dk_ndrive)!= sizeof dk_ndrive) {
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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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return (dk_ndrive != 0);
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}
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void
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