initial import of NetBSD tree

3 files changed, 549 insertions, 0 deletions

diff --git a/usr.sbin/iostat/Makefile b/usr.sbin/iostat/Makefile
new file mode 100644
index 00000000000..20ebf133c8f
--- /dev/null
+++ b/usr.sbin/iostat/Makefile
@@ -0,0 +1,14 @@
+#	@(#)Makefile	8.1 (Berkeley) 6/6/93
+
+PROG=	iostat
+.if (${MACHINE_ARCH} == "m68k")
+CFLAGS+=-D${MACHINE} -I${.CURDIR}/../../sys/arch
+.endif
+CFLAGS+=-I${.CURDIR}/../../usr.bin/vmstat
+MAN=	iostat.8
+DPADD=	${LIBKVM}
+LDADD=	-lkvm
+BINGRP=	kmem
+BINMODE=2555
+
+.include <bsd.prog.mk>
diff --git a/usr.sbin/iostat/iostat.8 b/usr.sbin/iostat/iostat.8
new file mode 100644
index 00000000000..b2c56cc440f
--- /dev/null
+++ b/usr.sbin/iostat/iostat.8
@@ -0,0 +1,143 @@
+.\" Copyright (c) 1985, 1991, 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.
+.\"
+.\"	from: @(#)iostat.8	8.1 (Berkeley) 6/6/93
+.\"	$Id: iostat.8,v 1.1.1.1 1995/10/18 08:47:37 deraadt Exp $
+.\"
+.Dd June 6, 1993
+.Dt IOSTAT 8
+.Os BSD 4
+.Sh NAME
+.Nm iostat
+.Nd report
+.Tn I/O
+statistics
+.Sh SYNOPSIS
+.Nm iostat
+.Op Fl c Ar count
+.Op Fl M Ar core
+.Op Fl N Ar system
+.Op Fl w Ar wait
+.Op Ar drives
+.Sh DESCRIPTION
+.Nm Iostat
+displays kernel
+.Tn I/O
+statistics on terminal, disk and cpu
+operations.
+.Pp
+The options are as follows:
+.Bl -tag -width flag
+.It Fl c
+Repeat the display
+.Ar count
+times.
+The first display is for the time since a reboot and each subsequent
+report is for the time period since the last display.
+If no
+.Ar wait
+interval is specified, the default is 1 second.
+.It Fl M
+Extract values associated with the name list from the specified core
+instead of the default
+.Dq Pa /dev/kmem .
+.It Fl N
+Extract the name list from the specified system instead of the default
+.Dq Pa /netbsd .
+.It Fl w
+Pause
+.Ar wait
+seconds between each display.
+If no repeat
+.Ar count
+is specified, the default is infinity.
+.El
+.Pp
+.Nm Iostat
+displays its information in the following format:
+.Bl -tag -width flag
+.It tty
+.Bl -tag -width indent -compact
+.It tin
+characters read from terminals
+.It tout
+characters written to terminals
+.El
+.It disks
+Disk operations (this field is system dependent). 
+The header of the field is the disk name and unit number.
+If more than four disk drives are configured in the system,
+.Nm iostat
+displays only the first four drives.
+To force
+.Nm iostat
+to display specific drives, their names may be supplied on the command
+line.
+.Pp
+.Bl -tag -width indent -compact
+.It sps
+sectors transferred per second
+.It tps
+transfers per second
+.It msps
+milliseconds per average seek (including implied
+seeks and rotational latency)
+.El
+.It cpu
+.Bl -tag -width indent -compact
+.It \&us
+% of cpu time in user mode
+.It \&ni
+% of cpu time in user mode running niced processes
+.It \&sy
+% of cpu time in system mode
+.It \&id
+% of cpu time in idle mode
+.El
+.El
+.Sh FILES
+.Bl -tag -width /dev/kmem -compact
+.It Pa /netbsd
+Default kernel namelist.
+.It Pa /dev/kmem
+Default memory file.
+.El
+.Sh SEE ALSO
+.Xr fstat 1 ,
+.Xr netstat 1 ,
+.Xr nfsstat 1 ,
+.Xr \&ps 1 ,
+.Xr systat 1 ,
+.Xr pstat 8 ,
+.Xr vmstat 8
+.Pp
+The sections starting with ``Interpreting system activity'' in
+.%T "Installing and Operating 4.3BSD" .
diff --git a/usr.sbin/iostat/iostat.c b/usr.sbin/iostat/iostat.c
new file mode 100644
index 00000000000..deaaaf600da
--- /dev/null
+++ b/usr.sbin/iostat/iostat.c
@@ -0,0 +1,392 @@
+/*-
+ * Copyright (c) 1986, 1991, 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
+static char copyright[] =
+"@(#) Copyright (c) 1986, 1991, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+/* from: static char sccsid[] = "@(#)iostat.c	8.2 (Berkeley) 1/26/94"; */
+static char *rcsid = "$Id: iostat.c,v 1.1.1.1 1995/10/18 08:47:37 deraadt Exp $";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/buf.h>
+#include <sys/dkstat.h>
+
+#include <err.h>
+#include <ctype.h>
+#include <fcntl.h>
+#include <kvm.h>
+#include <limits.h>
+#include <nlist.h>
+#include <paths.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+struct nlist namelist[] = {
+#define	X_DK_TIME	0
+	{ "_dk_time" },
+#define	X_DK_XFER	1
+	{ "_dk_xfer" },
+#define	X_DK_WDS	2
+	{ "_dk_wds" },
+#define	X_TK_NIN	3
+	{ "_tk_nin" },
+#define	X_TK_NOUT	4
+	{ "_tk_nout" },
+#define	X_DK_SEEK	5
+	{ "_dk_seek" },
+#define	X_CP_TIME	6
+	{ "_cp_time" },
+#define	X_DK_WPMS	7
+	{ "_dk_wpms" },
+#define	X_HZ		8
+	{ "_hz" },
+#define	X_STATHZ	9
+	{ "_stathz" },
+#define	X_DK_NDRIVE	10
+	{ "_dk_ndrive" },
+#define	X_END		10
+#if defined(hp300) || defined(luna68k)
+#define	X_HPDINIT	(X_END+1)
+	{ "_hp_dinit" },
+#endif
+#ifdef mips
+#define	X_SCSI_DINIT	(X_END+1)
+	{ "_scsi_dinit" },
+#endif
+#ifdef tahoe
+#define	X_VBDINIT	(X_END+1)
+	{ "_vbdinit" },
+#endif
+#ifdef vax
+	{ "_mbdinit" },
+#define X_MBDINIT	(X_END+1)
+	{ "_ubdinit" },
+#define X_UBDINIT	(X_END+2)
+#endif
+	{ NULL },
+};
+
+struct _disk {
+	long	cp_time[CPUSTATES];
+	long	*dk_time;
+	long	*dk_wds;
+	long	*dk_seek;
+	long	*dk_xfer;
+	long	tk_nin;
+	long	tk_nout;
+} cur, last;
+
+kvm_t	 *kd;
+double	  etime;
+long	 *dk_wpms;
+int	  dk_ndrive, *dr_select, hz, kmemfd, ndrives;
+char	**dr_name;
+
+#define nlread(x, v) \
+	kvm_read(kd, namelist[x].n_value, &(v), sizeof(v))
+
+#include "names.c"				/* XXX */
+
+void cpustats __P((void));
+void dkstats __P((void));
+void phdr __P((int));
+void usage __P((void));
+
+int
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	register int i;
+	long tmp;
+	int ch, hdrcnt, reps, interval, stathz, ndrives;
+	char **cp, *memf, *nlistf, buf[30];
+        char errbuf[_POSIX2_LINE_MAX];
+
+	interval = reps = 0;
+	nlistf = memf = NULL;
+	while ((ch = getopt(argc, argv, "c:M:N:w:")) != EOF)
+		switch(ch) {
+		case 'c':
+			if ((reps = atoi(optarg)) <= 0)
+				errx(1, "repetition count <= 0.");
+			break;
+		case 'M':
+			memf = optarg;
+			break;
+		case 'N':
+			nlistf = optarg;
+			break;
+		case 'w':
+			if ((interval = atoi(optarg)) <= 0)
+				errx(1, "interval <= 0.");
+			break;
+		case '?':
+		default:
+			usage();
+		}
+	argc -= optind;
+	argv += optind;
+
+	/*
+	 * Discard setgid privileges if not the running kernel so that bad
+	 * guys can't print interesting stuff from kernel memory.
+	 */
+	if (nlistf != NULL || memf != NULL)
+		setgid(getgid());
+
+        kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
+	if (kd == 0)
+		errx(1, "kvm_openfiles: %s", errbuf);
+	if (kvm_nlist(kd, namelist) == -1)
+		errx(1, "kvm_nlist: %s", kvm_geterr(kd));
+	if (namelist[X_DK_NDRIVE].n_type == 0)
+		errx(1, "dk_ndrive not found in namelist");
+	(void)nlread(X_DK_NDRIVE, dk_ndrive);
+	if (dk_ndrive <= 0)
+		errx(1, "invalid dk_ndrive %d\n", dk_ndrive);
+
+	cur.dk_time = calloc(dk_ndrive, sizeof(long));
+	cur.dk_wds = calloc(dk_ndrive, sizeof(long));
+	cur.dk_seek = calloc(dk_ndrive, sizeof(long));
+	cur.dk_xfer = calloc(dk_ndrive, sizeof(long));
+	last.dk_time = calloc(dk_ndrive, sizeof(long));
+	last.dk_wds = calloc(dk_ndrive, sizeof(long));
+	last.dk_seek = calloc(dk_ndrive, sizeof(long));
+	last.dk_xfer = calloc(dk_ndrive, sizeof(long));
+	dr_select = calloc(dk_ndrive, sizeof(int));
+	dr_name = calloc(dk_ndrive, sizeof(char *));
+	dk_wpms = calloc(dk_ndrive, sizeof(long));
+
+	for (i = 0; i < dk_ndrive; i++) {
+		(void)sprintf(buf, "dk%d", i);
+		dr_name[i] = strdup(buf);
+	}
+	if (!read_names())
+		exit(1);
+	(void)nlread(X_HZ, hz);
+	(void)nlread(X_STATHZ, stathz);
+	if (stathz)
+		hz = stathz;
+	(void)kvm_read(kd, namelist[X_DK_WPMS].n_value, dk_wpms,
+		dk_ndrive * sizeof(dk_wpms));
+
+	/*
+	 * Choose drives to be displayed.  Priority goes to (in order) drives
+	 * supplied as arguments and default drives.  If everything isn't
+	 * filled in and there are drives not taken care of, display the first
+	 * few that fit.
+	 *
+	 * The backward compatibility #ifdefs permit the syntax:
+	 *	iostat [ drives ] [ interval [ count ] ]
+	 */
+#define	BACKWARD_COMPATIBILITY
+	for (ndrives = 0; *argv; ++argv) {
+#ifdef	BACKWARD_COMPATIBILITY
+		if (isdigit(**argv))
+			break;
+#endif
+		for (i = 0; i < dk_ndrive; i++) {
+			if (strcmp(dr_name[i], *argv))
+				continue;
+			dr_select[i] = 1;
+			++ndrives;
+		}
+	}
+#ifdef	BACKWARD_COMPATIBILITY
+	if (*argv) {
+		interval = atoi(*argv);
+		if (*++argv)
+			reps = atoi(*argv);
+	}
+#endif
+
+	if (interval) {
+		if (!reps)
+			reps = -1;
+	} else
+		if (reps)
+			interval = 1;
+
+	for (i = 0; i < dk_ndrive && ndrives < 4; i++) {
+		if (dr_select[i] || dk_wpms[i] == 0)
+			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;
+	}
+
+	(void)signal(SIGCONT, phdr);
+
+	for (hdrcnt = 1;;) {
+		if (!--hdrcnt) {
+			phdr(0);
+			hdrcnt = 20;
+		}
+		(void)kvm_read(kd, namelist[X_DK_TIME].n_value,
+		    cur.dk_time, dk_ndrive * sizeof(long));
+		(void)kvm_read(kd, namelist[X_DK_XFER].n_value,
+		    cur.dk_xfer, dk_ndrive * sizeof(long));
+		(void)kvm_read(kd, namelist[X_DK_WDS].n_value,
+		    cur.dk_wds, dk_ndrive * sizeof(long));
+		(void)kvm_read(kd, namelist[X_DK_SEEK].n_value,
+		    cur.dk_seek, dk_ndrive * sizeof(long));
+		(void)kvm_read(kd, namelist[X_TK_NIN].n_value,
+		    &cur.tk_nin, sizeof(cur.tk_nin));
+		(void)kvm_read(kd, namelist[X_TK_NOUT].n_value,
+		    &cur.tk_nout, sizeof(cur.tk_nout));
+		(void)kvm_read(kd, namelist[X_CP_TIME].n_value,
+		    cur.cp_time, sizeof(cur.cp_time));
+		for (i = 0; i < dk_ndrive; i++) {
+			if (!dr_select[i])
+				continue;
+#define X(fld)	tmp = cur.fld[i]; cur.fld[i] -= last.fld[i]; last.fld[i] = tmp
+			X(dk_xfer);
+			X(dk_seek);
+			X(dk_wds);
+			X(dk_time);
+		}
+		tmp = cur.tk_nin;
+		cur.tk_nin -= last.tk_nin;
+		last.tk_nin = tmp;
+		tmp = cur.tk_nout;
+		cur.tk_nout -= last.tk_nout;
+		last.tk_nout = tmp;
+		etime = 0;
+		for (i = 0; i < CPUSTATES; i++) {
+			X(cp_time);
+			etime += cur.cp_time[i];
+		}
+		if (etime == 0.0)
+			etime = 1.0;
+		etime /= (float)hz;
+		(void)printf("%4.0f%5.0f",
+		    cur.tk_nin / etime, cur.tk_nout / etime);
+		dkstats();
+		cpustats();
+		(void)printf("\n");
+		(void)fflush(stdout);
+
+		if (reps >= 0 && --reps <= 0)
+			break;
+		(void)sleep(interval);
+	}
+	exit(0);
+}
+
+/* ARGUSED */
+void
+phdr(signo)
+	int signo;
+{
+	register int i;
+
+	(void)printf("      tty");
+	for (i = 0; i < dk_ndrive; i++)
+		if (dr_select[i])
+			(void)printf("          %3.3s ", dr_name[i]);
+	(void)printf("         cpu\n tin tout");
+	for (i = 0; i < dk_ndrive; i++)
+		if (dr_select[i])
+			(void)printf(" sps tps msps ");
+	(void)printf(" us ni sy in id\n");
+}
+
+void
+dkstats()
+{
+	register int dn;
+	double atime, itime, msps, words, xtime;
+
+	for (dn = 0; dn < dk_ndrive; ++dn) {
+		if (!dr_select[dn])
+			continue;
+		words = cur.dk_wds[dn] * 32;		/* words xfer'd */
+		(void)printf("%4.0f",			/* sectors */
+		    words / (DEV_BSIZE / 2) / etime);
+
+		(void)printf("%4.0f", cur.dk_xfer[dn] / etime);
+
+		if (dk_wpms[dn] && cur.dk_xfer[dn]) {
+			atime = cur.dk_time[dn];	/* ticks disk busy */
+			atime /= (float)hz;		/* ticks to seconds */
+			xtime = words / dk_wpms[dn];	/* transfer time */
+			itime = atime - xtime;		/* time not xfer'ing */
+			if (itime < 0)
+				msps = 0;
+			else 
+				msps = itime * 1000 / cur.dk_xfer[dn];
+		} else
+			msps = 0;
+		(void)printf("%5.1f ", msps);
+	}
+}
+
+void
+cpustats()
+{
+	register int state;
+	double time;
+
+	time = 0;
+	for (state = 0; state < CPUSTATES; ++state)
+		time += cur.cp_time[state];
+	for (state = 0; state < CPUSTATES; ++state)
+		(void)printf("%3.0f",
+		    100. * cur.cp_time[state] / (time ? time : 1));
+}
+
+void
+usage()
+{
+	(void)fprintf(stderr,
+"usage: iostat [-c count] [-M core] [-N system] [-w wait] [drives]\n");
+	exit(1);
+}