4.3BSD-Reno/src/usr.bin/vmstat/vmstat.c
/*
* Copyright (c) 1980 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted provided
* that: (1) source distributions retain this entire copyright notice and
* comment, and (2) distributions including binaries display the following
* acknowledgement: ``This product includes software developed by the
* University of California, Berkeley and its contributors'' in the
* documentation or other materials provided with the distribution and in
* all advertising materials mentioning features or use of this software.
* 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1980 The Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)vmstat.c 5.21 (Berkeley) 6/6/90";
#endif /* not lint */
#include <sys/param.h>
#include <sys/file.h>
#include <sys/vm.h>
#include <sys/dkstat.h>
#include <sys/buf.h>
#include <sys/namei.h>
#include <sys/text.h>
#include <sys/malloc.h>
#include <stdio.h>
#include <ctype.h>
#include <nlist.h>
#include <paths.h>
struct nlist nl[] = {
#define X_CPTIME 0
{ "_cp_time" },
#define X_RATE 1
{ "_rate" },
#define X_TOTAL 2
{ "_total" },
#define X_DEFICIT 3
{ "_deficit" },
#define X_FORKSTAT 4
{ "_forkstat" },
#define X_SUM 5
{ "_sum" },
#define X_FIRSTFREE 6
{ "_firstfree" },
#define X_MAXFREE 7
{ "_maxfree" },
#define X_BOOTTIME 8
{ "_boottime" },
#define X_DKXFER 9
{ "_dk_xfer" },
#define X_REC 10
{ "_rectime" },
#define X_PGIN 11
{ "_pgintime" },
#define X_HZ 12
{ "_hz" },
#define X_PHZ 13
{ "_phz" },
#define X_NCHSTATS 14
{ "_nchstats" },
#define X_INTRNAMES 15
{ "_intrnames" },
#define X_EINTRNAMES 16
{ "_eintrnames" },
#define X_INTRCNT 17
{ "_intrcnt" },
#define X_EINTRCNT 18
{ "_eintrcnt" },
#define X_DK_NDRIVE 19
{ "_dk_ndrive" },
#define X_XSTATS 20
{ "_xstats" },
#define X_KMEMSTAT 21
{ "_kmemstats" },
#define X_KMEMBUCKETS 22
{ "_bucket" },
#define X_END 22
#ifdef vax
#define X_MBDINIT (X_END+1)
{ "_mbdinit" },
#define X_UBDINIT (X_END+2)
{ "_ubdinit" },
#endif
#ifdef tahoe
#define X_VBDINIT (X_END+1)
{ "_vbdinit" },
#define X_CKEYSTATS (X_END+2)
{ "_ckeystats" },
#define X_DKEYSTATS (X_END+3)
{ "_dkeystats" },
#endif
#ifdef hp300
#define X_HPDINIT (X_END+1)
{ "_hp_dinit" },
#endif
{ "" },
};
char **dr_name;
int *dr_select;
int dk_ndrive;
int ndrives = 0;
#ifdef vax
char *defdrives[] = { "hp0", "hp1", "hp2", 0 };
#else
#ifdef hp300
char *defdrives[] = { "rd0", "rd1", "rd2", 0 };
#else
char *defdrives[] = { 0 };
#endif
#endif
double stat1();
int firstfree, maxfree;
int hz;
int phz;
int HZ;
struct {
int busy;
long time[CPUSTATES];
long *xfer;
struct vmmeter Rate;
struct vmtotal Total;
struct vmmeter Sum;
struct forkstat Forkstat;
unsigned rectime;
unsigned pgintime;
} s, s1, z;
#define rate s.Rate
#define total s.Total
#define sum s.Sum
#define forkstat s.Forkstat
struct vmmeter osum;
int deficit;
double etime;
int mf;
time_t now, boottime;
int printhdr();
int lines = 1;
#define INTS(x) ((x) - (hz + phz))
main(argc, argv)
int argc;
char **argv;
{
extern char *ctime();
register i;
int iter, nintv, iflag = 0;
long t;
char *arg, **cp, buf[BUFSIZ];
nlist(_PATH_UNIX, nl);
if(nl[0].n_type == 0) {
fprintf(stderr, "vmstat: no %s namelist\n", _PATH_UNIX);
exit(1);
}
mf = open(_PATH_KMEM, 0);
if(mf < 0) {
fprintf(stderr, "vmstat: cannot open %s\n", _PATH_KMEM);
exit(1);
}
iter = 0;
argc--, argv++;
while (argc>0 && argv[0][0]=='-') {
char *cp = *argv++;
argc--;
while (*++cp) switch (*cp) {
case 't':
dotimes();
exit(0);
case 'z':
close(mf);
mf = open(_PATH_KMEM, 2);
lseek(mf, (long)nl[X_SUM].n_value, L_SET);
write(mf, &z.Sum, sizeof z.Sum);
exit(0);
case 'f':
doforkst();
exit(0);
case 'm':
domem();
exit(0);
case 's':
dosum();
exit(0);
case 'i':
iflag++;
break;
default:
fprintf(stderr,
"usage: vmstat [ -fsim ] [ interval ] [ count]\n");
exit(1);
}
}
lseek(mf, (long)nl[X_FIRSTFREE].n_value, L_SET);
read(mf, &firstfree, sizeof firstfree);
lseek(mf, (long)nl[X_MAXFREE].n_value, L_SET);
read(mf, &maxfree, sizeof maxfree);
lseek(mf, (long)nl[X_BOOTTIME].n_value, L_SET);
read(mf, &boottime, sizeof boottime);
lseek(mf, (long)nl[X_HZ].n_value, L_SET);
read(mf, &hz, sizeof hz);
if (nl[X_PHZ].n_value != 0) {
lseek(mf, (long)nl[X_PHZ].n_value, L_SET);
read(mf, &phz, sizeof phz);
}
HZ = phz ? phz : hz;
if (nl[X_DK_NDRIVE].n_value == 0) {
fprintf(stderr, "dk_ndrive undefined in system\n");
exit(1);
}
lseek(mf, nl[X_DK_NDRIVE].n_value, L_SET);
read(mf, &dk_ndrive, sizeof (dk_ndrive));
if (dk_ndrive <= 0) {
fprintf(stderr, "dk_ndrive %d\n", dk_ndrive);
exit(1);
}
dr_select = (int *)calloc(dk_ndrive, sizeof (int));
dr_name = (char **)calloc(dk_ndrive, sizeof (char *));
#define allocate(e, t) \
s./**/e = (t *)calloc(dk_ndrive, sizeof (t)); \
s1./**/e = (t *)calloc(dk_ndrive, sizeof (t));
allocate(xfer, long);
for (arg = buf, i = 0; i < dk_ndrive; i++) {
dr_name[i] = arg;
sprintf(dr_name[i], "dk%d", i);
arg += strlen(dr_name[i]) + 1;
}
read_names();
time(&now);
nintv = now - boottime;
if (nintv <= 0 || nintv > 60*60*24*365*10) {
fprintf(stderr,
"Time makes no sense... namelist must be wrong.\n");
exit(1);
}
if (iflag) {
dointr(nintv);
exit(0);
}
/*
* Choose drives to be displayed. Priority
* goes to (in order) drives supplied as arguments,
* default drives. If everything isn't filled
* in and there are drives not taken care of,
* display the first few that fit.
*/
ndrives = 0;
while (argc > 0 && !isdigit(argv[0][0])) {
for (i = 0; i < dk_ndrive; i++) {
if (strcmp(dr_name[i], argv[0]))
continue;
dr_select[i] = 1;
ndrives++;
}
argc--, argv++;
}
for (i = 0; i < dk_ndrive && ndrives < 4; i++) {
if (dr_select[i])
continue;
for (cp = defdrives; *cp; cp++)
if (strcmp(dr_name[i], *cp) == 0) {
dr_select[i] = 1;
ndrives++;
break;
}
}
for (i = 0; i < dk_ndrive && ndrives < 4; i++) {
if (dr_select[i])
continue;
dr_select[i] = 1;
ndrives++;
}
if (argc > 1)
iter = atoi(argv[1]);
signal(SIGCONT, printhdr);
loop:
if (--lines == 0)
printhdr();
lseek(mf, (long)nl[X_CPTIME].n_value, L_SET);
read(mf, s.time, sizeof s.time);
lseek(mf, (long)nl[X_DKXFER].n_value, L_SET);
read(mf, s.xfer, dk_ndrive * sizeof (long));
if (nintv != 1)
lseek(mf, (long)nl[X_SUM].n_value, L_SET);
else
lseek(mf, (long)nl[X_RATE].n_value, L_SET);
read(mf, &rate, sizeof rate);
lseek(mf, (long)nl[X_TOTAL].n_value, L_SET);
read(mf, &total, sizeof total);
osum = sum;
lseek(mf, (long)nl[X_SUM].n_value, L_SET);
read(mf, &sum, sizeof sum);
lseek(mf, (long)nl[X_DEFICIT].n_value, L_SET);
read(mf, &deficit, sizeof deficit);
etime = 0;
for (i=0; i < dk_ndrive; i++) {
t = s.xfer[i];
s.xfer[i] -= s1.xfer[i];
s1.xfer[i] = t;
}
for (i=0; i < CPUSTATES; i++) {
t = s.time[i];
s.time[i] -= s1.time[i];
s1.time[i] = t;
etime += s.time[i];
}
if(etime == 0.)
etime = 1.;
printf("%2d%2d%2d", total.t_rq, total.t_dw+total.t_pw, total.t_sw);
#define pgtok(a) ((a)*NBPG/1024)
printf("%6d%6d", pgtok(total.t_avm), pgtok(total.t_free));
printf("%4d%3d", (rate.v_pgrec - (rate.v_xsfrec+rate.v_xifrec))/nintv,
(rate.v_xsfrec+rate.v_xifrec)/nintv);
printf("%4d", pgtok(rate.v_pgpgin)/nintv);
printf("%4d%4d%4d%4d", pgtok(rate.v_pgpgout)/nintv,
pgtok(rate.v_dfree)/nintv, pgtok(deficit), rate.v_scan/nintv);
etime /= (float)HZ;
for (i = 0; i < dk_ndrive; i++)
if (dr_select[i])
stats(i);
printf("%4d%4d%4d", INTS(rate.v_intr/nintv), rate.v_syscall/nintv,
rate.v_swtch/nintv);
for(i=0; i<CPUSTATES; i++) {
float f = stat1(i);
if (i == 0) { /* US+NI */
i++;
f += stat1(i);
}
printf("%3.0f", f);
}
printf("\n");
fflush(stdout);
nintv = 1;
if (--iter &&argc > 0) {
sleep(atoi(argv[0]));
goto loop;
}
}
printhdr()
{
register int i, j;
printf(" procs memory page ");
i = (ndrives * 3 - 6) / 2;
if (i < 0)
i = 0;
for (j = 0; j < i; j++)
putchar(' ');
printf("faults");
i = ndrives * 3 - 6 - i;
for (j = 0; j < i; j++)
putchar(' ');
printf(" cpu\n");
printf(" r b w avm fre re at pi po fr de sr ");
for (i = 0; i < dk_ndrive; i++)
if (dr_select[i])
printf("%c%c ", dr_name[i][0], dr_name[i][2]);
printf(" in sy cs us sy id\n");
lines = 19;
}
dotimes()
{
lseek(mf, (long)nl[X_REC].n_value, L_SET);
read(mf, &s.rectime, sizeof s.rectime);
lseek(mf, (long)nl[X_PGIN].n_value, L_SET);
read(mf, &s.pgintime, sizeof s.pgintime);
lseek(mf, (long)nl[X_SUM].n_value, L_SET);
read(mf, &sum, sizeof sum);
printf("%d reclaims, %d total time (usec)\n", sum.v_pgrec, s.rectime);
printf("average: %d usec / reclaim\n", s.rectime/sum.v_pgrec);
printf("\n");
printf("%d page ins, %d total time (msec)\n",sum.v_pgin, s.pgintime/10);
printf("average: %8.1f msec / page in\n", s.pgintime/(sum.v_pgin*10.0));
}
#if defined(tahoe)
#include <tahoe/cpu.h>
#endif
dosum()
{
struct nchstats nchstats;
struct xstats xstats;
long nchtotal;
#if defined(tahoe)
struct keystats keystats;
#endif
lseek(mf, (long)nl[X_SUM].n_value, L_SET);
read(mf, &sum, sizeof sum);
printf("%9d swap ins\n", sum.v_swpin);
printf("%9d swap outs\n", sum.v_swpout);
printf("%9d pages swapped in\n", sum.v_pswpin / CLSIZE);
printf("%9d pages swapped out\n", sum.v_pswpout / CLSIZE);
printf("%9d total address trans. faults taken\n", sum.v_faults);
printf("%9d page ins\n", sum.v_pgin);
printf("%9d page outs\n", sum.v_pgout);
printf("%9d pages paged in\n", sum.v_pgpgin);
printf("%9d pages paged out\n", sum.v_pgpgout);
printf("%9d sequential process pages freed\n", sum.v_seqfree);
printf("%9d total reclaims (%d%% fast)\n", sum.v_pgrec,
pct(sum.v_fastpgrec, sum.v_pgrec));
printf("%9d reclaims from free list\n", sum.v_pgfrec);
printf("%9d intransit blocking page faults\n", sum.v_intrans);
printf("%9d zero fill pages created\n", sum.v_nzfod / CLSIZE);
printf("%9d zero fill page faults\n", sum.v_zfod / CLSIZE);
printf("%9d executable fill pages created\n", sum.v_nexfod / CLSIZE);
printf("%9d executable fill page faults\n", sum.v_exfod / CLSIZE);
printf("%9d swap text pages found in free list\n", sum.v_xsfrec);
printf("%9d inode text pages found in free list\n", sum.v_xifrec);
printf("%9d file fill pages created\n", sum.v_nvrfod / CLSIZE);
printf("%9d file fill page faults\n", sum.v_vrfod / CLSIZE);
printf("%9d pages examined by the clock daemon\n", sum.v_scan);
printf("%9d revolutions of the clock hand\n", sum.v_rev);
printf("%9d pages freed by the clock daemon\n", sum.v_dfree / CLSIZE);
printf("%9d cpu context switches\n", sum.v_swtch);
printf("%9d device interrupts\n", sum.v_intr);
printf("%9d software interrupts\n", sum.v_soft);
#ifdef vax
printf("%9d pseudo-dma dz interrupts\n", sum.v_pdma);
#endif
printf("%9d traps\n", sum.v_trap);
printf("%9d system calls\n", sum.v_syscall);
lseek(mf, (long)nl[X_NCHSTATS].n_value, 0);
read(mf, &nchstats, sizeof nchstats);
nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits +
nchstats.ncs_badhits + nchstats.ncs_falsehits +
nchstats.ncs_miss + nchstats.ncs_long;
printf("%9d total name lookups\n", nchtotal);
printf("%9s cache hits (%d%% pos + %d%% neg) system %d%% per-process\n",
"", pct(nchstats.ncs_goodhits, nchtotal),
pct(nchstats.ncs_neghits, nchtotal),
pct(nchstats.ncs_pass2, nchtotal));
printf("%9s deletions %d%%, falsehits %d%%, toolong %d%%\n", "",
pct(nchstats.ncs_badhits, nchtotal),
pct(nchstats.ncs_falsehits, nchtotal),
pct(nchstats.ncs_long, nchtotal));
lseek(mf, (long)nl[X_XSTATS].n_value, 0);
read(mf, &xstats, sizeof xstats);
printf("%9d total calls to xalloc (cache hits %d%%)\n",
xstats.alloc, pct(xstats.alloc_cachehit, xstats.alloc));
printf("%9s sticky %d flushed %d unused %d\n", "",
xstats.alloc_inuse, xstats.alloc_cacheflush, xstats.alloc_unused);
printf("%9d total calls to xfree", xstats.free);
printf(" (sticky %d cached %d swapped %d)\n",
xstats.free_inuse, xstats.free_cache, xstats.free_cacheswap);
#if defined(tahoe)
lseek(mf, (long)nl[X_CKEYSTATS].n_value, 0);
read(mf, &keystats, sizeof keystats);
printf("%9d %s (free %d%% norefs %d%% taken %d%% shared %d%%)\n",
keystats.ks_allocs, "code cache keys allocated",
pct(keystats.ks_allocfree, keystats.ks_allocs),
pct(keystats.ks_norefs, keystats.ks_allocs),
pct(keystats.ks_taken, keystats.ks_allocs),
pct(keystats.ks_shared, keystats.ks_allocs));
lseek(mf, (long)nl[X_DKEYSTATS].n_value, 0);
read(mf, &keystats, sizeof keystats);
printf("%9d %s (free %d%% norefs %d%% taken %d%% shared %d%%)\n",
keystats.ks_allocs, "data cache keys allocated",
pct(keystats.ks_allocfree, keystats.ks_allocs),
pct(keystats.ks_norefs, keystats.ks_allocs),
pct(keystats.ks_taken, keystats.ks_allocs),
pct(keystats.ks_shared, keystats.ks_allocs));
#endif
}
doforkst()
{
lseek(mf, (long)nl[X_FORKSTAT].n_value, L_SET);
read(mf, &forkstat, sizeof forkstat);
printf("%d forks, %d pages, average=%.2f\n",
forkstat.cntfork, forkstat.sizfork,
(float) forkstat.sizfork / forkstat.cntfork);
printf("%d vforks, %d pages, average=%.2f\n",
forkstat.cntvfork, forkstat.sizvfork,
(float)forkstat.sizvfork / forkstat.cntvfork);
}
stats(dn)
{
if (dn >= dk_ndrive) {
printf(" 0");
return;
}
printf("%3.0f", s.xfer[dn]/etime);
}
double
stat1(row)
{
double t;
register i;
t = 0;
for(i=0; i<CPUSTATES; i++)
t += s.time[i];
if(t == 0.)
t = 1.;
return(s.time[row]*100./t);
}
pct(top, bot)
{
if (bot == 0)
return (0);
return ((top * 100) / bot);
}
dointr(nintv)
{
int nintr, inttotal;
long *intrcnt;
char *intrname, *malloc();
nintr = (nl[X_EINTRCNT].n_value - nl[X_INTRCNT].n_value) / sizeof(long);
intrcnt = (long *) malloc(nl[X_EINTRCNT].n_value -
nl[X_INTRCNT].n_value);
intrname = malloc(nl[X_EINTRNAMES].n_value - nl[X_INTRNAMES].n_value);
if (intrcnt == NULL || intrname == NULL) {
fprintf(stderr, "vmstat: out of memory\n");
exit(9);
}
lseek(mf, (long)nl[X_INTRCNT].n_value, L_SET);
read(mf, intrcnt, nintr * sizeof (long));
lseek(mf, (long)nl[X_INTRNAMES].n_value, L_SET);
read(mf, intrname, nl[X_EINTRNAMES].n_value - nl[X_INTRNAMES].n_value);
printf("interrupt total rate\n");
inttotal = 0;
while (nintr--) {
if (*intrcnt)
printf("%-12s %8ld %8ld\n", intrname,
*intrcnt, *intrcnt / nintv);
intrname += strlen(intrname) + 1;
inttotal += *intrcnt++;
}
printf("Total %8ld %8ld\n", inttotal, inttotal / nintv);
}
/*
* These names must be kept in sync with
* the types defined in <sys/malloc.h>.
*/
char *kmemnames[] = {
"free", /* 0 M_FREE */
"mbuf", /* 1 M_MBUF */
"devbuf", /* 2 M_DEVBUF */
"socket", /* 3 M_SOCKET */
"pcb", /* 4 M_PCB */
"routetbl", /* 5 M_RTABLE */
"hosttbl", /* 6 M_HTABLE */
"fragtbl", /* 7 M_FTABLE */
"zombie", /* 8 M_ZOMBIE */
"ifaddr", /* 9 M_IFADDR */
"soopts", /* 10 M_SOOPTS */
"soname", /* 11 M_SONAME */
"namei", /* 12 M_NAMEI */
"gprof", /* 13 M_GPROF */
"ioctlops", /* 14 M_IOCTLOPS */
"superblk", /* 15 M_SUPERBLK */
"cred", /* 16 M_CRED */
"pgrp", /* 17 M_PGRP */
"session", /* 18 M_SESSION */
"iov", /* 19 M_IOV */
"mount", /* 20 M_MOUNT */
"fhandle", /* 21 M_FHANDLE */
"NFS req", /* 22 M_NFSREQ */
"NFS mount", /* 23 M_NFSMNT */
"vnodes", /* 24 M_VNODE */
"namecache", /* 25 M_CACHE */
"UFS quota", /* 26 M_DQUOT */
"UFS mount", /* 27 M_UFSMNT */
"mapmem", /* 28 M_MAPMEM */
"shm", /* 29 M_SHM */
0, 0, 0, 0,
0, 0, 0, 0, 0,
0, 0, 0, 0, 0,
0, 0, 0, 0, 0,
"temp", /* 49 M_TEMP */
};
domem()
{
struct kmemstats kmemstats[M_LAST];
struct kmembuckets buckets[MINBUCKET + 16];
register struct kmembuckets *kp;
register struct kmemstats *ks;
int i;
lseek(mf, (long)nl[X_KMEMBUCKETS].n_value, L_SET);
read(mf, buckets, sizeof buckets);
printf("Memory statistics by bucket size\n");
printf(" Size In Use Free Requests HighWater Couldfree\n");
for (i = MINBUCKET, kp = &buckets[i]; i < MINBUCKET + 16; i++, kp++) {
if (kp->kb_calls == 0)
continue;
printf("%8d%9d%7d%11d%8d%11d\n", 1 << i,
kp->kb_total - kp->kb_totalfree,
kp->kb_totalfree, kp->kb_calls,
kp->kb_highwat, kp->kb_couldfree);
}
lseek(mf, (long)nl[X_KMEMSTAT].n_value, L_SET);
read(mf, kmemstats, sizeof kmemstats);
printf("Memory statistics by type\n");
printf(" Type In Use MemUse HighUse Limit Requests %s\n",
"TypeLimit KernLimit");
for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) {
if (ks->ks_calls == 0)
continue;
printf("%10s%7d%8dK%9dK%6dK%9d%7d%10d\n",
kmemnames[i] ? kmemnames[i] : "undefined",
ks->ks_inuse, (ks->ks_memuse + 1023) / 1024,
(ks->ks_maxused + 1023) / 1024,
(ks->ks_limit + 1023) / 1024, ks->ks_calls,
ks->ks_limblocks, ks->ks_mapblocks);
}
}
#define steal(where, var) \
lseek(mf, where, L_SET); read(mf, &var, sizeof var);
/*
* Read the drive names out of kmem.
*/
#ifdef vax
#include <vaxuba/ubavar.h>
#include <vaxmba/mbavar.h>
read_names()
{
struct mba_device mdev;
register struct mba_device *mp;
struct mba_driver mdrv;
short two_char;
char *cp = (char *) &two_char;
struct uba_device udev, *up;
struct uba_driver udrv;
mp = (struct mba_device *) nl[X_MBDINIT].n_value;
up = (struct uba_device *) nl[X_UBDINIT].n_value;
if (up == 0) {
fprintf(stderr, "vmstat: Disk init info not in namelist\n");
exit(1);
}
if (mp) for (;;) {
steal(mp++, mdev);
if (mdev.mi_driver == 0)
break;
if (mdev.mi_dk < 0 || mdev.mi_alive == 0)
continue;
steal(mdev.mi_driver, mdrv);
steal(mdrv.md_dname, two_char);
sprintf(dr_name[mdev.mi_dk], "%c%c%d",
cp[0], cp[1], mdev.mi_unit);
}
for (;;) {
steal(up++, udev);
if (udev.ui_driver == 0)
break;
if (udev.ui_dk < 0 || udev.ui_alive == 0)
continue;
steal(udev.ui_driver, udrv);
steal(udrv.ud_dname, two_char);
sprintf(dr_name[udev.ui_dk], "%c%c%d",
cp[0], cp[1], udev.ui_unit);
}
}
#endif
#ifdef tahoe
#include <tahoevba/vbavar.h>
/*
* Read the drive names out of kmem.
*/
read_names()
{
struct vba_device udev, *up;
struct vba_driver udrv;
short two_char;
char *cp = (char *)&two_char;
up = (struct vba_device *) nl[X_VBDINIT].n_value;
if (up == 0) {
fprintf(stderr, "vmstat: Disk init info not in namelist\n");
exit(1);
}
for (;;) {
steal(up++, udev);
if (udev.ui_driver == 0)
break;
if (udev.ui_dk < 0 || udev.ui_alive == 0)
continue;
steal(udev.ui_driver, udrv);
steal(udrv.ud_dname, two_char);
sprintf(dr_name[udev.ui_dk], "%c%c%d",
cp[0], cp[1], udev.ui_unit);
}
}
#endif
#ifdef hp300
#include <hpdev/device.h>
#define validdisk(cp) ((cp)[1] == 'd' && ((cp)[0] == 'r' || (cp)[0] == 's'))
read_names()
{
struct hp_device hdev;
register struct hp_device *hp;
struct driver hdrv;
short two_char;
char *cp = (char *) &two_char;
register char *dp;
hp = (struct hp_device *) nl[X_HPDINIT].n_value;
if (hp == 0) {
fprintf(stderr, "vmstat: Disk init info not in namelist\n");
exit(1);
}
for (;;) {
steal(hp++, hdev);
if (hdev.hp_driver == 0)
break;
steal(hdev.hp_driver, hdrv);
steal(hdrv.d_name, two_char);
/*
* hp_dk is meaningless if the device isn't a disk
* (d_name not valid) or the disk was not found when
* booting (hp_alive == 0).
*/
if (!validdisk(cp) || hdev.hp_alive == 0)
continue;
dp = dr_name[hdev.hp_dk];
sprintf(dp, "%c%c%d", cp[0], cp[1], hdev.hp_unit);
}
}
#endif