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freebsd-skq/usr.bin/systat/vmstat.c
Warner Losh 448b84a0e4 o Use snprintf rather than sprintf 
o Add more checks for buffer overflows
o Use snprintf rather than strcat/cpy and have better checks for max
  length exceeded.

Most of these changes are not exploitable buffer overruns, but it never
hurts to be safe.

Inspired by and obtained from: OpenBSD
1998-06-09 04:17:29 +00:00

708 lines
19 KiB
C
Raw Blame History

/*-
* Copyright (c) 1983, 1989, 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
#if 0
static char sccsid[] = "@(#)vmstat.c 8.2 (Berkeley) 1/12/94";
#endif
static const char rcsid[] =
"$Id: vmstat.c,v 1.24 1998/05/27 21:01:37 jhay Exp $";
#endif /* not lint */
/*
* Cursed vmstat -- from Robert Elz.
*/
#include <sys/param.h>
#include <sys/dkstat.h>
#include <sys/buf.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/proc.h>
#include <sys/uio.h>
#include <sys/namei.h>
#include <sys/sysctl.h>
#include <sys/vmmeter.h>
#include <vm/vm_param.h>
#include <ctype.h>
#include <err.h>
#include <nlist.h>
#include <paths.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <utmp.h>
#include "systat.h"
#include "extern.h"
static struct Info {
long time[CPUSTATES];
struct vmmeter Cnt;
struct vmtotal Total;
long *dk_time;
long *dk_wds;
long *dk_seek;
long *dk_xfer;
int dk_busy;
struct nchstats nchstats;
long nchcount;
long *intrcnt;
int bufspace;
int desiredvnodes;
int numvnodes;
int freevnodes;
} s, s1, s2, z;
#define cnt s.Cnt
#define oldcnt s1.Cnt
#define total s.Total
#define nchtotal s.nchstats
#define oldnchtotal s1.nchstats
static enum state { BOOT, TIME, RUN } state = TIME;
static void allocinfo __P((struct Info *));
static void copyinfo __P((struct Info *, struct Info *));
static float cputime __P((int));
static void dinfo __P((int, int));
static void getinfo __P((struct Info *, enum state));
static void putint __P((int, int, int, int));
static void putfloat __P((double, int, int, int, int, int));
static int ucount __P((void));
static int ncpu;
static int ut;
static char buf[26];
static time_t t;
static double etime;
static int nintr;
static long *intrloc;
static char **intrname;
static int nextintsrow;
struct utmp utmp;
WINDOW *
openkre()
{
ut = open(_PATH_UTMP, O_RDONLY);
if (ut < 0)
error("No utmp");
return (stdscr);
}
void
closekre(w)
WINDOW *w;
{
(void) close(ut);
if (w == NULL)
return;
wclear(w);
wrefresh(w);
}
static struct nlist namelist[] = {
#define X_CPTIME 0
{ "_cp_time" },
#define X_CNT 1
{ "_cnt" },
#define X_BUFFERSPACE 2
{ "_bufspace" },
#define X_DK_BUSY 3
{ "_dk_busy" },
#define X_DK_TIME 4
{ "_dk_time" },
#define X_DK_XFER 5
{ "_dk_xfer" },
#define X_DK_WDS 6
{ "_dk_wds" },
#define X_DK_SEEK 7
{ "_dk_seek" },
#define X_NCHSTATS 8
{ "_nchstats" },
#define X_INTRNAMES 9
{ "_intrnames" },
#define X_EINTRNAMES 10
{ "_eintrnames" },
#define X_INTRCNT 11
{ "_intrcnt" },
#define X_EINTRCNT 12
{ "_eintrcnt" },
#define X_DESIREDVNODES 13
{ "_desiredvnodes" },
#define X_NUMVNODES 14
{ "_numvnodes" },
#define X_FREEVNODES 15
{ "_freevnodes" },
{ "" },
};
/*
* These constants define where the major pieces are laid out
*/
#define STATROW 0 /* uses 1 row and 68 cols */
#define STATCOL 2
#define MEMROW 2 /* uses 4 rows and 31 cols */
#define MEMCOL 0
#define PAGEROW 2 /* uses 4 rows and 26 cols */
#define PAGECOL 46
#define INTSROW 6 /* uses all rows to bottom and 17 cols */
#define INTSCOL 61
#define PROCSROW 7 /* uses 2 rows and 20 cols */
#define PROCSCOL 0
#define GENSTATROW 7 /* uses 2 rows and 30 cols */
#define GENSTATCOL 20
#define VMSTATROW 6 /* uses 17 rows and 12 cols */
#define VMSTATCOL 48
#define GRAPHROW 10 /* uses 3 rows and 51 cols */
#define GRAPHCOL 0
#define NAMEIROW 14 /* uses 3 rows and 38 cols */
#define NAMEICOL 0
#define DISKROW 18 /* uses 5 rows and 50 cols (for 9 drives) */
#define DISKCOL 0
#define DRIVESPACE 9 /* max # for space */
#if DK_NDRIVE > DRIVESPACE
#define MAXDRIVES DRIVESPACE /* max # to display */
#else
#define MAXDRIVES DK_NDRIVE /* max # to display */
#endif
int
initkre()
{
char *intrnamebuf, *cp;
int i;
static int once = 0;
if (namelist[0].n_type == 0) {
if (kvm_nlist(kd, namelist)) {
nlisterr(namelist);
return(0);
}
if (namelist[0].n_type == 0) {
error("No namelist");
return(0);
}
}
if (! dkinit())
return(0);
if (dk_ndrive && !once) {
#define allocate(e, t) \
s./**/e = (t *)calloc(dk_ndrive, sizeof (t)); \
s1./**/e = (t *)calloc(dk_ndrive, sizeof (t)); \
s2./**/e = (t *)calloc(dk_ndrive, sizeof (t)); \
z./**/e = (t *)calloc(dk_ndrive, sizeof (t));
allocate(dk_time, long);
allocate(dk_wds, long);
allocate(dk_seek, long);
allocate(dk_xfer, long);
once = 1;
#undef allocate
}
if (nintr == 0) {
nintr = (namelist[X_EINTRCNT].n_value -
namelist[X_INTRCNT].n_value) / sizeof (long);
intrloc = calloc(nintr, sizeof (long));
intrname = calloc(nintr, sizeof (long));
intrnamebuf = malloc(namelist[X_EINTRNAMES].n_value -
namelist[X_INTRNAMES].n_value);
if (intrnamebuf == 0 || intrname == 0 || intrloc == 0) {
error("Out of memory\n");
if (intrnamebuf)
free(intrnamebuf);
if (intrname)
free(intrname);
if (intrloc)
free(intrloc);
nintr = 0;
return(0);
}
NREAD(X_INTRNAMES, intrnamebuf, NVAL(X_EINTRNAMES) -
NVAL(X_INTRNAMES));
for (cp = intrnamebuf, i = 0; i < nintr; i++) {
intrname[i] = cp;
cp += strlen(cp) + 1;
}
nextintsrow = INTSROW + 2;
allocinfo(&s);
allocinfo(&s1);
allocinfo(&s2);
allocinfo(&z);
}
getinfo(&s2, RUN);
copyinfo(&s2, &s1);
return(1);
}
void
fetchkre()
{
time_t now;
struct tm *tp;
time(&now);
tp = localtime(&now);
(void) strftime(buf, sizeof(buf), "%c", tp);
buf[16] = '\0';
getinfo(&s, state);
}
void
labelkre()
{
register int i, j;
clear();
mvprintw(STATROW, STATCOL + 4, "users Load");
mvprintw(MEMROW, MEMCOL, "Mem:KB REAL VIRTUAL");
mvprintw(MEMROW + 1, MEMCOL, " Tot Share Tot Share");
mvprintw(MEMROW + 2, MEMCOL, "Act");
mvprintw(MEMROW + 3, MEMCOL, "All");
mvprintw(MEMROW + 1, MEMCOL + 41, "Free");
mvprintw(PAGEROW, PAGECOL, " VN PAGER SWAP PAGER ");
mvprintw(PAGEROW + 1, PAGECOL, " in out in out ");
mvprintw(PAGEROW + 2, PAGECOL, "count");
mvprintw(PAGEROW + 3, PAGECOL, "pages");
mvprintw(INTSROW, INTSCOL + 3, " Interrupts");
mvprintw(INTSROW + 1, INTSCOL + 9, "total");
mvprintw(VMSTATROW + 0, VMSTATCOL + 10, "cow");
mvprintw(VMSTATROW + 1, VMSTATCOL + 10, "zfod");
mvprintw(VMSTATROW + 2, VMSTATCOL + 10, "wire");
mvprintw(VMSTATROW + 3, VMSTATCOL + 10, "act");
mvprintw(VMSTATROW + 4, VMSTATCOL + 10, "inact");
mvprintw(VMSTATROW + 5, VMSTATCOL + 10, "cache");
mvprintw(VMSTATROW + 6, VMSTATCOL + 10, "free");
mvprintw(VMSTATROW + 7, VMSTATCOL + 10, "daefr");
mvprintw(VMSTATROW + 8, VMSTATCOL + 10, "prcfr");
mvprintw(VMSTATROW + 9, VMSTATCOL + 10, "react");
mvprintw(VMSTATROW + 10, VMSTATCOL + 10, "pdwake");
mvprintw(VMSTATROW + 11, VMSTATCOL + 10, "pdpgs");
mvprintw(VMSTATROW + 12, VMSTATCOL + 10, "intrn");
mvprintw(VMSTATROW + 13, VMSTATCOL + 10, "buf");
mvprintw(VMSTATROW + 14, VMSTATCOL + 10, "desiredvnodes");
mvprintw(VMSTATROW + 15, VMSTATCOL + 10, "numvnodes");
mvprintw(VMSTATROW + 16, VMSTATCOL + 10, "freevnodes");
mvprintw(GENSTATROW, GENSTATCOL, " Csw Trp Sys Int Sof Flt");
mvprintw(GRAPHROW, GRAPHCOL,
" . %%Sys . %%Intr . %%User . %%Nice . %%Idle");
mvprintw(PROCSROW, PROCSCOL, "Proc:r p d s w");
mvprintw(GRAPHROW + 1, GRAPHCOL,
"| | | | | | | | | | |");
mvprintw(NAMEIROW, NAMEICOL, "Namei Name-cache Dir-cache");
mvprintw(NAMEIROW + 1, NAMEICOL,
" Calls hits %% hits %%");
mvprintw(DISKROW, DISKCOL, "Discs");
mvprintw(DISKROW + 1, DISKCOL, "seeks");
mvprintw(DISKROW + 2, DISKCOL, "xfers");
mvprintw(DISKROW + 3, DISKCOL, " blks");
mvprintw(DISKROW + 4, DISKCOL, " msps");
j = 0;
for (i = 0; i < dk_ndrive && j < MAXDRIVES; i++)
if (dk_select[i]) {
mvprintw(DISKROW, DISKCOL + 5 + 5 * j,
" %4.4s", dr_name[j]);
j++;
}
for (i = 0; i < nintr; i++) {
if (intrloc[i] == 0)
continue;
mvprintw(intrloc[i], INTSCOL + 9, "%-10.10s", intrname[i]);
}
}
#define X(fld) {t=s.fld[i]; s.fld[i]-=s1.fld[i]; if(state==TIME) s1.fld[i]=t;}
#define Y(fld) {t = s.fld; s.fld -= s1.fld; if(state == TIME) s1.fld = t;}
#define Z(fld) {t = s.nchstats.fld; s.nchstats.fld -= s1.nchstats.fld; \
if(state == TIME) s1.nchstats.fld = t;}
#define PUTRATE(fld, l, c, w) \
Y(fld); \
putint((int)((float)s.fld/etime + 0.5), l, c, w)
#define MAXFAIL 5
static char cpuchar[CPUSTATES] = { '=' , '+', '>', '-', ' ' };
static char cpuorder[CPUSTATES] = { CP_SYS, CP_INTR, CP_USER, CP_NICE,
CP_IDLE };
void
showkre()
{
float f1, f2;
int psiz, inttotal;
int i, l, c;
static int failcnt = 0;
for (i = 0; i < dk_ndrive; i++) {
X(dk_xfer); X(dk_seek); X(dk_wds); X(dk_time);
}
etime = 0;
for(i = 0; i < CPUSTATES; i++) {
X(time);
etime += s.time[i];
}
if (etime < 5.0) { /* < 5 ticks - ignore this trash */
if (failcnt++ >= MAXFAIL) {
clear();
mvprintw(2, 10, "The alternate system clock has died!");
mvprintw(3, 10, "Reverting to ``pigs'' display.");
move(CMDLINE, 0);
refresh();
failcnt = 0;
sleep(5);
command("pigs");
}
return;
}
failcnt = 0;
etime /= hertz;
etime /= ncpu;
inttotal = 0;
for (i = 0; i < nintr; i++) {
if (s.intrcnt[i] == 0)
continue;
if (intrloc[i] == 0) {
if (nextintsrow == LINES)
continue;
intrloc[i] = nextintsrow++;
mvprintw(intrloc[i], INTSCOL + 9, "%-10.10s",
intrname[i]);
}
X(intrcnt);
l = (int)((float)s.intrcnt[i]/etime + 0.5);
inttotal += l;
putint(l, intrloc[i], INTSCOL + 2, 6);
}
putint(inttotal, INTSROW + 1, INTSCOL + 2, 6);
Z(ncs_goodhits); Z(ncs_badhits); Z(ncs_miss);
Z(ncs_long); Z(ncs_pass2); Z(ncs_2passes); Z(ncs_neghits);
s.nchcount = nchtotal.ncs_goodhits + nchtotal.ncs_badhits +
nchtotal.ncs_miss + nchtotal.ncs_long + nchtotal.ncs_neghits;
if (state == TIME)
s1.nchcount = s.nchcount;
psiz = 0;
f2 = 0.0;
for (c = 0; c < CPUSTATES; c++) {
i = cpuorder[c];
f1 = cputime(i);
f2 += f1;
l = (int) ((f2 + 1.0) / 2.0) - psiz;
if (f1 > 99.9)
f1 = 99.9; /* no room to display 100.0 */
putfloat(f1, GRAPHROW, GRAPHCOL + 10 * c, 4, 1, 0);
move(GRAPHROW + 2, psiz);
psiz += l;
while (l-- > 0)
addch(cpuchar[c]);
}
putint(ucount(), STATROW, STATCOL, 3);
putfloat(avenrun[0], STATROW, STATCOL + 17, 6, 2, 0);
putfloat(avenrun[1], STATROW, STATCOL + 23, 6, 2, 0);
putfloat(avenrun[2], STATROW, STATCOL + 29, 6, 2, 0);
mvaddstr(STATROW, STATCOL + 53, buf);
#define pgtokb(pg) ((pg) * cnt.v_page_size / 1024)
putint(pgtokb(total.t_arm), MEMROW + 2, MEMCOL + 3, 8);
putint(pgtokb(total.t_armshr), MEMROW + 2, MEMCOL + 11, 8);
putint(pgtokb(total.t_avm), MEMROW + 2, MEMCOL + 19, 9);
putint(pgtokb(total.t_avmshr), MEMROW + 2, MEMCOL + 28, 9);
putint(pgtokb(total.t_rm), MEMROW + 3, MEMCOL + 3, 8);
putint(pgtokb(total.t_rmshr), MEMROW + 3, MEMCOL + 11, 8);
putint(pgtokb(total.t_vm), MEMROW + 3, MEMCOL + 19, 9);
putint(pgtokb(total.t_vmshr), MEMROW + 3, MEMCOL + 28, 9);
putint(pgtokb(total.t_free), MEMROW + 2, MEMCOL + 37, 8);
putint(total.t_rq - 1, PROCSROW + 1, PROCSCOL + 3, 3);
putint(total.t_pw, PROCSROW + 1, PROCSCOL + 6, 3);
putint(total.t_dw, PROCSROW + 1, PROCSCOL + 9, 3);
putint(total.t_sl, PROCSROW + 1, PROCSCOL + 12, 3);
putint(total.t_sw, PROCSROW + 1, PROCSCOL + 15, 3);
PUTRATE(Cnt.v_cow_faults, VMSTATROW + 0, VMSTATCOL + 3, 6);
PUTRATE(Cnt.v_zfod, VMSTATROW + 1, VMSTATCOL + 4, 5);
putint(pgtokb(cnt.v_wire_count), VMSTATROW + 2, VMSTATCOL, 9);
putint(pgtokb(cnt.v_active_count), VMSTATROW + 3, VMSTATCOL, 9);
putint(pgtokb(cnt.v_inactive_count), VMSTATROW + 4, VMSTATCOL, 9);
putint(pgtokb(cnt.v_cache_count), VMSTATROW + 5, VMSTATCOL, 9);
putint(pgtokb(cnt.v_free_count), VMSTATROW + 6, VMSTATCOL, 9);
PUTRATE(Cnt.v_dfree, VMSTATROW + 7, VMSTATCOL, 9);
PUTRATE(Cnt.v_pfree, VMSTATROW + 8, VMSTATCOL, 9);
PUTRATE(Cnt.v_reactivated, VMSTATROW + 9, VMSTATCOL, 9);
PUTRATE(Cnt.v_pdwakeups, VMSTATROW + 10, VMSTATCOL, 9);
PUTRATE(Cnt.v_pdpages, VMSTATROW + 11, VMSTATCOL, 9);
PUTRATE(Cnt.v_intrans, VMSTATROW + 12, VMSTATCOL, 9);
putint(s.bufspace/1024, VMSTATROW + 13, VMSTATCOL, 9);
putint(s.desiredvnodes, VMSTATROW + 14, VMSTATCOL, 9);
putint(s.numvnodes, VMSTATROW + 15, VMSTATCOL, 9);
putint(s.freevnodes, VMSTATROW + 16, VMSTATCOL, 9);
PUTRATE(Cnt.v_vnodein, PAGEROW + 2, PAGECOL + 5, 5);
PUTRATE(Cnt.v_vnodeout, PAGEROW + 2, PAGECOL + 10, 5);
PUTRATE(Cnt.v_swapin, PAGEROW + 2, PAGECOL + 17, 5);
PUTRATE(Cnt.v_swapout, PAGEROW + 2, PAGECOL + 22, 5);
PUTRATE(Cnt.v_vnodepgsin, PAGEROW + 3, PAGECOL + 5, 5);
PUTRATE(Cnt.v_vnodepgsout, PAGEROW + 3, PAGECOL + 10, 5);
PUTRATE(Cnt.v_swappgsin, PAGEROW + 3, PAGECOL + 17, 5);
PUTRATE(Cnt.v_swappgsout, PAGEROW + 3, PAGECOL + 22, 5);
PUTRATE(Cnt.v_swtch, GENSTATROW + 1, GENSTATCOL, 5);
PUTRATE(Cnt.v_trap, GENSTATROW + 1, GENSTATCOL + 5, 5);
PUTRATE(Cnt.v_syscall, GENSTATROW + 1, GENSTATCOL + 10, 5);
PUTRATE(Cnt.v_intr, GENSTATROW + 1, GENSTATCOL + 15, 5);
PUTRATE(Cnt.v_soft, GENSTATROW + 1, GENSTATCOL + 20, 5);
PUTRATE(Cnt.v_vm_faults, GENSTATROW + 1, GENSTATCOL + 25, 5);
mvprintw(DISKROW, DISKCOL + 5, " ");
for (i = 0, c = 0; i < dk_ndrive && c < MAXDRIVES; i++)
if (dk_select[i]) {
mvprintw(DISKROW, DISKCOL + 5 + 5 * c,
" %4.4s", dr_name[i]);
dinfo(i, ++c);
}
putint(s.nchcount, NAMEIROW + 2, NAMEICOL, 9);
putint((nchtotal.ncs_goodhits + nchtotal.ncs_neghits),
NAMEIROW + 2, NAMEICOL + 9, 9);
#define nz(x) ((x) ? (x) : 1)
putfloat((nchtotal.ncs_goodhits+nchtotal.ncs_neghits) *
100.0 / nz(s.nchcount),
NAMEIROW + 2, NAMEICOL + 19, 4, 0, 1);
putint(nchtotal.ncs_pass2, NAMEIROW + 2, NAMEICOL + 23, 9);
putfloat(nchtotal.ncs_pass2 * 100.0 / nz(s.nchcount),
NAMEIROW + 2, NAMEICOL + 33, 4, 0, 1);
#undef nz
}
int
cmdkre(cmd, args)
char *cmd, *args;
{
if (prefix(cmd, "run")) {
copyinfo(&s2, &s1);
state = RUN;
return (1);
}
if (prefix(cmd, "boot")) {
state = BOOT;
copyinfo(&z, &s1);
return (1);
}
if (prefix(cmd, "time")) {
state = TIME;
return (1);
}
if (prefix(cmd, "zero")) {
if (state == RUN)
getinfo(&s1, RUN);
return (1);
}
return (dkcmd(cmd, args));
}
/* calculate number of users on the system */
static int
ucount()
{
register int nusers = 0;
if (ut < 0)
return (0);
while (read(ut, &utmp, sizeof(utmp)))
if (utmp.ut_name[0] != '\0')
nusers++;
lseek(ut, 0L, L_SET);
return (nusers);
}
static float
cputime(indx)
int indx;
{
double t;
register int i;
t = 0;
for (i = 0; i < CPUSTATES; i++)
t += s.time[i];
if (t == 0.0)
t = 1.0;
return (s.time[indx] * 100.0 / t);
}
static void
putint(n, l, c, w)
int n, l, c, w;
{
char b[128];
move(l, c);
if (n == 0) {
while (w-- > 0)
addch(' ');
return;
}
snprintf(b, sizeof(b), "%*d", w, n);
if (strlen(b) > w) {
while (w-- > 0)
addch('*');
return;
}
addstr(b);
}
static void
putfloat(f, l, c, w, d, nz)
double f;
int l, c, w, d, nz;
{
char b[128];
move(l, c);
if (nz && f == 0.0) {
while (--w >= 0)
addch(' ');
return;
}
snprintf(b, sizeof(b), "%*.*f", w, d, f);
if (strlen(b) > w) {
while (--w >= 0)
addch('*');
return;
}
addstr(b);
}
static void
getinfo(s, st)
struct Info *s;
enum state st;
{
int mib[2], size;
extern int errno;
NREAD(X_CPTIME, s->time, sizeof s->time);
NREAD(X_CNT, &s->Cnt, sizeof s->Cnt);
NREAD(X_BUFFERSPACE, &s->bufspace, LONG);
NREAD(X_DESIREDVNODES, &s->desiredvnodes, LONG);
NREAD(X_NUMVNODES, &s->numvnodes, LONG);
NREAD(X_FREEVNODES, &s->freevnodes, LONG);
NREAD(X_DK_BUSY, &s->dk_busy, LONG);
NREAD(X_DK_TIME, s->dk_time, dk_ndrive * LONG);
NREAD(X_DK_XFER, s->dk_xfer, dk_ndrive * LONG);
NREAD(X_DK_WDS, s->dk_wds, dk_ndrive * LONG);
NREAD(X_DK_SEEK, s->dk_seek, dk_ndrive * LONG);
NREAD(X_NCHSTATS, &s->nchstats, sizeof s->nchstats);
NREAD(X_INTRCNT, s->intrcnt, nintr * LONG);
size = sizeof(s->Total);
mib[0] = CTL_VM;
mib[1] = VM_METER;
if (sysctl(mib, 2, &s->Total, &size, NULL, 0) < 0) {
error("Can't get kernel info: %s\n", strerror(errno));
bzero(&s->Total, sizeof(s->Total));
}
size = sizeof(ncpu);
if (sysctlbyname("hw.ncpu", &ncpu, &size, NULL, 0) < 0)
ncpu = 1;
}
static void
allocinfo(s)
struct Info *s;
{
s->intrcnt = (long *) calloc(nintr, sizeof(long));
if (s->intrcnt == NULL)
errx(2, "out of memory");
}
static void
copyinfo(from, to)
register struct Info *from, *to;
{
long *time, *wds, *seek, *xfer;
long *intrcnt;
/*
* time, wds, seek, and xfer are malloc'd so we have to
* save the pointers before the structure copy and then
* copy by hand.
*/
time = to->dk_time; wds = to->dk_wds; seek = to->dk_seek;
xfer = to->dk_xfer; intrcnt = to->intrcnt;
*to = *from;
bcopy(from->dk_time, to->dk_time = time, dk_ndrive * sizeof (long));
bcopy(from->dk_wds, to->dk_wds = wds, dk_ndrive * sizeof (long));
bcopy(from->dk_seek, to->dk_seek = seek, dk_ndrive * sizeof (long));
bcopy(from->dk_xfer, to->dk_xfer = xfer, dk_ndrive * sizeof (long));
bcopy(from->intrcnt, to->intrcnt = intrcnt, nintr * sizeof (int));
}
static void
dinfo(dn, c)
int dn, c;
{
double words, atime, itime, xtime;
c = DISKCOL + c * 5;
atime = s.dk_time[dn];
atime /= hertz;
words = s.dk_wds[dn]*32.0; /* number of words transferred */
xtime = dk_mspw[dn]*words; /* transfer time */
itime = atime - xtime; /* time not transferring */
if (xtime < 0)
itime += xtime, xtime = 0;
if (itime < 0)
xtime += itime, itime = 0;
putint((int)((float)s.dk_seek[dn]/etime+0.5), DISKROW + 1, c, 5);
putint((int)((float)s.dk_xfer[dn]/etime+0.5), DISKROW + 2, c, 5);
putint((int)(words/etime/512.0 + 0.5), DISKROW + 3, c, 5);
if (s.dk_seek[dn])
putfloat(itime*1000.0/s.dk_seek[dn], DISKROW + 4, c, 5, 1, 1);
else
putint(0, DISKROW + 4, c, 5);
}
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