BSD 4.4 Lite usr.sbin Sources

3 files changed, 1441 insertions, 0 deletions

diff --git a/usr.sbin/pstat/Makefile b/usr.sbin/pstat/Makefile
new file mode 100644
index 0000000..9969a64
--- /dev/null
+++ b/usr.sbin/pstat/Makefile
@@ -0,0 +1,10 @@
+#	@(#)Makefile	8.1 (Berkeley) 6/6/93
+
+PROG=	pstat
+CFLAGS+=-I/sys
+BINGRP=	kmem
+BINMODE=2555
+DPADD=	${LIBKVM}
+LDADD=	-lkvm
+
+.include <bsd.prog.mk>
diff --git a/usr.sbin/pstat/pstat.8 b/usr.sbin/pstat/pstat.8
new file mode 100644
index 0000000..95f3d86
--- /dev/null
+++ b/usr.sbin/pstat/pstat.8
@@ -0,0 +1,321 @@
+.\" Copyright (c) 1980, 1991, 1993, 1994
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\"	@(#)pstat.8	8.4 (Berkeley) 4/19/94
+.\" 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.
+.\"
+.\"     @(#)pstat.8	8.4 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt PSTAT 8
+.Os BSD 4
+.Sh NAME
+.Nm pstat
+.Nd display system data structures
+.Sh SYNOPSIS
+.Nm pstat
+.Op Fl Tfnstv
+.Op Fl M Ar core
+.Op Fl N Ar system
+.Sh DESCRIPTION
+.Nm Pstat
+displays open file entry, swap space utilization,
+terminal state, and vnode data structures.
+If
+.Ar corefile
+is given, the information is sought there, otherwise
+in
+.Pa /dev/kmem .
+The required namelist is taken from
+.Pa /vmunix
+unless 
+.Ar system
+is specified.
+The
+.Fl n
+option specifies that devices should be printed out by major/minor
+number rather than by name.
+.Pp
+Options are
+.Bl -tag -width indent
+.It Fl T
+Prints the number of used and free slots in the several system tables
+and is useful for checking to see how large system tables have become
+if the system is under heavy load.
+.It Fl f
+Print the open file table with these headings:
+.Bl -tag -width indent
+.It LOC
+The core location of this table entry.
+.It TYPE
+The type of object the file table entry points to.
+.It FLG
+Miscellaneous state variables encoded thus:
+.Bl -tag -width indent
+.It R
+open for reading
+.It W
+open for writing
+.It A
+open for appending
+.It S
+shared lock present
+.It X
+exclusive lock present
+.It I
+signal pgrp when data ready
+.El
+.It CNT
+Number of processes that know this open file.
+.It MSG
+Number of messages outstanding for this file.
+.It DATA
+The location of the vnode table entry or socket structure for this file.
+.It OFFSET
+The file offset (see
+.Xr lseek 2 ) .
+.El
+.It Fl s
+Print information about swap space usage on all the 
+swap areas compiled into the kernel.
+The first column is the device name of the partition.  The next column is
+the total space available in the partition.  The 
+.Ar Used
+column indicates the total blocks used so far;  the 
+.Ar Available
+column indicates how much space is remaining on each partition.
+The
+.Ar Capacity
+reports the percentage of space used.
+.Pp
+If more than one partition is configured into the system, totals for all
+of the statistics will be reported in the final line of the report.
+.It Fl t
+Print table for terminals
+with these headings:
+.Bl -tag -width indent
+.It RAW
+Number of characters in raw input queue.
+.It CAN
+Number of characters in canonicalized input queue.
+.It OUT
+Number of characters in putput queue.
+.It MODE
+See
+.Xr tty 4 .
+.It ADDR
+Physical device address.
+.It DEL
+Number of delimiters (newlines) in canonicalized input queue.
+.It COL
+Calculated column position of terminal.
+.It STATE
+Miscellaneous state variables encoded thus:
+.Bl -tag -width indent
+.It T
+delay timeout in progress
+.It W
+waiting for open to complete
+.It O
+open
+.It F
+outq has been flushed during DMA
+.It C
+carrier is on
+.It B
+busy doing output
+.It A
+process is awaiting output
+.It X
+open for exclusive use
+.It S
+output stopped
+.It H
+hangup on close
+.El
+.It PGRP
+Process group for which this is controlling terminal.
+.It DISC
+Line discipline; blank is old tty
+OTTYDISC
+or
+.Ql new tty
+for
+NTTYDISC
+or
+.Ql net
+for
+NETLDISC
+(see
+.Xr bk 4 ) .
+.El
+.It Fl v
+Print the active vnodes.  Each group of vnodes corresponding
+to a particular filesystem is preceded by a two line header.  The
+first line consists of the following:
+.Pp
+.Df I
+.No *** MOUNT Em fstype from 
+on
+.Em on fsflags
+.De
+.Pp
+where
+.Em fstype
+is one of
+.Em ufs , nfs , mfs , or pc ;
+.Em from
+is the filesystem is mounted from;
+.Em on
+is the directory
+the filesystem is mounted on; and
+.Em fsflags
+is a list
+of optional flags applied to the mount (see
+.Xr mount 8 ) .
+.The second line is a header for the individual fields ,
+the first part of which are fixed, and the second part are filesystem
+type specific.  The headers common to all vnodes are:
+.Bl -tag -width indent
+.It ADDR
+Location of this vnode.
+.It TYP
+File type.
+.It VFLAG
+.Pp
+A list of letters representing vnode flags:
+.Bl -tag -width indent
+.It R
+\- VROOT
+.It T
+\- VTEXT
+.It L
+\- VXLOCK
+.It W
+\- VXWANT
+.It E
+\- VEXLOCK
+.It S
+\- VSHLOCK
+.It T
+\- VLWAIT
+.It A
+\- VALIASED
+.It B
+\- VBWAIT
+.El
+.Pp
+.It USE
+The number of references to this vnode.
+.It HOLD
+The number of I/O buffers held by this vnode.
+.It FILEID
+The vnode fileid.
+In the case of
+.Em ufs
+this is the inode number.
+.It IFLAG
+Miscellaneous filesystem specific state variables encoded thus:
+.Bl -tag -width indent
+.It "For ufs:"
+.Pp
+.Bl -tag -width indent
+.It L
+locked
+.It U
+update time
+.Pq Xr fs 5
+must be corrected
+.It A
+access time must be corrected
+.It W
+wanted by another process (L flag is on)
+.It C
+changed time must be corrected
+.It S
+shared lock applied
+.It E
+exclusive lock applied
+.It Z
+someone waiting for a lock
+.It M
+contains modifications
+.It R
+has a rename in progress
+.El
+.It "For nfs:"
+.Bl -tag -width indent
+.It W
+waiting for I/O buffer flush to complete
+.It P
+I/O buffers being flushed
+.It M
+locally modified data exists
+.It E
+an earlier write failed
+.It X
+non-cacheable lease (nqnfs)
+.It O
+write lease (nqnfs)
+.It G
+lease was evicted (nqnfs)
+.El
+.El
+.It SIZ/RDEV
+Number of bytes in an ordinary file, or
+major and minor device of special file.
+.El
+.El
+.Sh FILES
+.Bl -tag -width /dev/kmemxxx -compact
+.It Pa /vmunix
+namelist
+.It Pa /dev/kmem
+default source of tables
+.El
+.Sh SEE ALSO
+.Xr iostat 1 ,
+.Xr ps 1 ,
+.Xr systat 1 ,
+.Xr vmstat 1 ,
+.Xr stat 2 ,
+.Xr fs 5 ,
+.Rs
+.Rt Tn UNIX Rt Implementation ,
+.Ra K. Thompson
+.Re
+.Sh BUGS
+Swap statistics are reported for all swap partitions compiled into the kernel,
+regardless of whether those partitions are being used.
+.Pp
+Does not understand NFS swap servers.
+.Sh HISTORY
+The
+.Nm pstat
+command appeared in 4.0BSD.
diff --git a/usr.sbin/pstat/pstat.c b/usr.sbin/pstat/pstat.c
new file mode 100644
index 0000000..0a3cdea
--- /dev/null
+++ b/usr.sbin/pstat/pstat.c
@@ -0,0 +1,1110 @@
+/*-
+ * Copyright (c) 1980, 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) 1980, 1991, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)pstat.c	8.9 (Berkeley) 2/16/94";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/vnode.h>
+#include <sys/map.h>
+#include <sys/ucred.h>
+#define KERNEL
+#include <sys/file.h>
+#include <ufs/ufs/quota.h>
+#include <ufs/ufs/inode.h>
+#define NFS
+#include <sys/mount.h>
+#undef NFS
+#undef KERNEL
+#include <sys/stat.h>
+#include <nfs/nfsnode.h>
+#include <sys/ioctl.h>
+#include <sys/tty.h>
+#include <sys/conf.h>
+
+#include <sys/sysctl.h>
+
+#include <err.h>
+#include <kvm.h>
+#include <limits.h>
+#include <nlist.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+struct nlist nl[] = {
+#define VM_SWAPMAP	0
+	{ "_swapmap" },	/* list of free swap areas */
+#define VM_NSWAPMAP	1
+	{ "_nswapmap" },/* size of the swap map */
+#define VM_SWDEVT	2
+	{ "_swdevt" },	/* list of swap devices and sizes */
+#define VM_NSWAP	3
+	{ "_nswap" },	/* size of largest swap device */
+#define VM_NSWDEV	4
+	{ "_nswdev" },	/* number of swap devices */
+#define VM_DMMAX	5
+	{ "_dmmax" },	/* maximum size of a swap block */
+#define	V_MOUNTLIST	6
+	{ "_mountlist" },	/* address of head of mount list. */
+#define V_NUMV		7
+	{ "_numvnodes" },
+#define	FNL_NFILE	8
+	{"_nfiles"},
+#define FNL_MAXFILE	9
+	{"_maxfiles"},
+#define NLMANDATORY FNL_MAXFILE	/* names up to here are mandatory */
+#define VM_NISWAP	NLMANDATORY + 1
+	{ "_niswap" },
+#define VM_NISWDEV	NLMANDATORY + 2
+	{ "_niswdev" },
+#define	SCONS		NLMANDATORY + 3
+	{ "_cons" },
+#define	SPTY		NLMANDATORY + 4
+	{ "_pt_tty" },
+#define	SNPTY		NLMANDATORY + 5
+	{ "_npty" },
+
+#ifdef hp300
+#define	SDCA	(SNPTY+1)
+	{ "_dca_tty" },
+#define	SNDCA	(SNPTY+2)
+	{ "_ndca" },
+#define	SDCM	(SNPTY+3)
+	{ "_dcm_tty" },
+#define	SNDCM	(SNPTY+4)
+	{ "_ndcm" },
+#define	SDCL	(SNPTY+5)
+	{ "_dcl_tty" },
+#define	SNDCL	(SNPTY+6)
+	{ "_ndcl" },
+#define	SITE	(SNPTY+7)
+	{ "_ite_tty" },
+#define	SNITE	(SNPTY+8)
+	{ "_nite" },
+#endif
+
+#ifdef mips
+#define SDC	(SNPTY+1)
+	{ "_dc_tty" },
+#define SNDC	(SNPTY+2)
+	{ "_dc_cnt" },
+#endif
+
+	{ "" }
+};
+
+int	usenumflag;
+int	totalflag;
+char	*nlistf	= NULL;
+char	*memf	= NULL;
+kvm_t	*kd;
+
+#define	SVAR(var) __STRING(var)	/* to force expansion */
+#define	KGET(idx, var)							\
+	KGET1(idx, &var, sizeof(var), SVAR(var))
+#define	KGET1(idx, p, s, msg)						\
+	KGET2(nl[idx].n_value, p, s, msg)
+#define	KGET2(addr, p, s, msg)						\
+	if (kvm_read(kd, (u_long)(addr), p, s) != s)			\
+		warnx("cannot read %s: %s", msg, kvm_geterr(kd))
+#define	KGETRET(addr, p, s, msg)					\
+	if (kvm_read(kd, (u_long)(addr), p, s) != s) {			\
+		warnx("cannot read %s: %s", msg, kvm_geterr(kd));	\
+		return (0);						\
+	}
+
+void	filemode __P((void));
+int	getfiles __P((char **, int *));
+struct mount *
+	getmnt __P((struct mount *));
+struct e_vnode *
+	kinfo_vnodes __P((int *));
+struct e_vnode *
+	loadvnodes __P((int *));
+void	mount_print __P((struct mount *));
+void	nfs_header __P((void));
+int	nfs_print __P((struct vnode *));
+void	swapmode __P((void));
+void	ttymode __P((void));
+void	ttyprt __P((struct tty *, int));
+void	ttytype __P((struct tty *, char *, int, int));
+void	ufs_header __P((void));
+int	ufs_print __P((struct vnode *));
+void	usage __P((void));
+void	vnode_header __P((void));
+void	vnode_print __P((struct vnode *, struct vnode *));
+void	vnodemode __P((void));
+
+int
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	extern char *optarg;
+	extern int optind;
+	int ch, i, quit, ret;
+	int fileflag, swapflag, ttyflag, vnodeflag;
+	char buf[_POSIX2_LINE_MAX];
+
+	fileflag = swapflag = ttyflag = vnodeflag = 0;
+	while ((ch = getopt(argc, argv, "TM:N:finstv")) != EOF)
+		switch (ch) {
+		case 'f':
+			fileflag = 1;
+			break;
+		case 'M':
+			memf = optarg;
+			break;
+		case 'N':
+			nlistf = optarg;
+			break;
+		case 'n':
+			usenumflag = 1;
+			break;
+		case 's':
+			swapflag = 1;
+			break;
+		case 'T':
+			totalflag = 1;
+			break;
+		case 't':
+			ttyflag = 1;
+			break;
+		case 'v':
+		case 'i':		/* Backward compatibility. */
+			vnodeflag = 1;
+			break;
+		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)
+		(void)setgid(getgid());
+
+	if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == 0)
+		errx(1, "kvm_openfiles: %s", buf);
+	if ((ret = kvm_nlist(kd, nl)) != 0) {
+		if (ret == -1)
+			errx(1, "kvm_nlist: %s", kvm_geterr(kd));
+		for (i = quit = 0; i <= NLMANDATORY; i++)
+			if (!nl[i].n_value) {
+				quit = 1;
+				warnx("undefined symbol: %s\n", nl[i].n_name);
+			}
+		if (quit)
+			exit(1);
+	}
+	if (!(fileflag | vnodeflag | ttyflag | swapflag | totalflag))
+		usage();
+	if (fileflag || totalflag)
+		filemode();
+	if (vnodeflag || totalflag)
+		vnodemode();
+	if (ttyflag)
+		ttymode();
+	if (swapflag || totalflag)
+		swapmode();
+	exit (0);
+}
+
+struct e_vnode {
+	struct vnode *avnode;
+	struct vnode vnode;
+};
+
+void
+vnodemode()
+{
+	register struct e_vnode *e_vnodebase, *endvnode, *evp;
+	register struct vnode *vp;
+	register struct mount *maddr, *mp;
+	int numvnodes;
+
+	e_vnodebase = loadvnodes(&numvnodes);
+	if (totalflag) {
+		(void)printf("%7d vnodes\n", numvnodes);
+		return;
+	}
+	endvnode = e_vnodebase + numvnodes;
+	(void)printf("%d active vnodes\n", numvnodes);
+
+
+#define ST	mp->mnt_stat
+	maddr = NULL;
+	for (evp = e_vnodebase; evp < endvnode; evp++) {
+		vp = &evp->vnode;
+		if (vp->v_mount != maddr) {
+			/*
+			 * New filesystem
+			 */
+			if ((mp = getmnt(vp->v_mount)) == NULL)
+				continue;
+			maddr = vp->v_mount;
+			mount_print(mp);
+			vnode_header();
+			switch(ST.f_type) {
+			case MOUNT_UFS:
+			case MOUNT_MFS:
+				ufs_header();
+				break;
+			case MOUNT_NFS:
+				nfs_header();
+				break;
+			case MOUNT_NONE:
+			case MOUNT_MSDOS:
+			default:
+				break;
+			}
+			(void)printf("\n");
+		}
+		vnode_print(evp->avnode, vp);
+		switch(ST.f_type) {
+		case MOUNT_UFS:
+		case MOUNT_MFS:
+			ufs_print(vp);
+			break;
+		case MOUNT_NFS:
+			nfs_print(vp);
+			break;
+		case MOUNT_NONE:
+		case MOUNT_MSDOS:
+		default:
+			break;
+		}
+		(void)printf("\n");
+	}
+	free(e_vnodebase);
+}
+
+void
+vnode_header()
+{
+	(void)printf("ADDR     TYP VFLAG  USE HOLD");
+}
+
+void
+vnode_print(avnode, vp)
+	struct vnode *avnode;
+	struct vnode *vp;
+{
+	char *type, flags[16]; 
+	char *fp = flags;
+	register int flag;
+
+	/*
+	 * set type
+	 */
+	switch(vp->v_type) {
+	case VNON:
+		type = "non"; break;
+	case VREG:
+		type = "reg"; break;
+	case VDIR:
+		type = "dir"; break;
+	case VBLK:
+		type = "blk"; break;
+	case VCHR:
+		type = "chr"; break;
+	case VLNK:
+		type = "lnk"; break;
+	case VSOCK:
+		type = "soc"; break;
+	case VFIFO:
+		type = "fif"; break;
+	case VBAD:
+		type = "bad"; break;
+	default: 
+		type = "unk"; break;
+	}
+	/*
+	 * gather flags
+	 */
+	flag = vp->v_flag;
+	if (flag & VROOT)
+		*fp++ = 'R';
+	if (flag & VTEXT)
+		*fp++ = 'T';
+	if (flag & VSYSTEM)
+		*fp++ = 'S';
+	if (flag & VXLOCK)
+		*fp++ = 'L';
+	if (flag & VXWANT)
+		*fp++ = 'W';
+	if (flag & VBWAIT)
+		*fp++ = 'B';
+	if (flag & VALIASED)
+		*fp++ = 'A';
+	if (flag == 0)
+		*fp++ = '-';
+	*fp = '\0';
+	(void)printf("%8x %s %5s %4d %4d",
+	    avnode, type, flags, vp->v_usecount, vp->v_holdcnt);
+}
+
+void
+ufs_header() 
+{
+	(void)printf(" FILEID IFLAG RDEV|SZ");
+}
+
+int
+ufs_print(vp) 
+	struct vnode *vp;
+{
+	register int flag;
+	struct inode inode, *ip = &inode;
+	char flagbuf[16], *flags = flagbuf;
+	char *name;
+	mode_t type;
+
+	KGETRET(VTOI(vp), &inode, sizeof(struct inode), "vnode's inode");
+	flag = ip->i_flag;
+	if (flag & IN_LOCKED)
+		*flags++ = 'L';
+	if (flag & IN_WANTED)
+		*flags++ = 'W';
+	if (flag & IN_RENAME)
+		*flags++ = 'R';
+	if (flag & IN_UPDATE)
+		*flags++ = 'U';
+	if (flag & IN_ACCESS)
+		*flags++ = 'A';
+	if (flag & IN_CHANGE)
+		*flags++ = 'C';
+	if (flag & IN_MODIFIED)
+		*flags++ = 'M';
+	if (flag & IN_SHLOCK)
+		*flags++ = 'S';
+	if (flag & IN_EXLOCK)
+		*flags++ = 'E';
+	if (flag & IN_LWAIT)
+		*flags++ = 'Z';
+	if (flag == 0)
+		*flags++ = '-';
+	*flags = '\0';
+
+	(void)printf(" %6d %5s", ip->i_number, flagbuf);
+	type = ip->i_mode & S_IFMT;
+	if (S_ISCHR(ip->i_mode) || S_ISBLK(ip->i_mode))
+		if (usenumflag || ((name = devname(ip->i_rdev, type)) == NULL))
+			(void)printf("   %2d,%-2d", 
+			    major(ip->i_rdev), minor(ip->i_rdev));
+		else
+			(void)printf(" %7s", name);
+	else
+		(void)printf(" %7qd", ip->i_size);
+	return (0);
+}
+
+void
+nfs_header() 
+{
+	(void)printf(" FILEID NFLAG RDEV|SZ");
+}
+
+int
+nfs_print(vp) 
+	struct vnode *vp;
+{
+	struct nfsnode nfsnode, *np = &nfsnode;
+	char flagbuf[16], *flags = flagbuf;
+	register int flag;
+	char *name;
+	mode_t type;
+
+	KGETRET(VTONFS(vp), &nfsnode, sizeof(nfsnode), "vnode's nfsnode");
+	flag = np->n_flag;
+	if (flag & NFLUSHWANT)
+		*flags++ = 'W';
+	if (flag & NFLUSHINPROG)
+		*flags++ = 'P';
+	if (flag & NMODIFIED)
+		*flags++ = 'M';
+	if (flag & NWRITEERR)
+		*flags++ = 'E';
+	if (flag & NQNFSNONCACHE)
+		*flags++ = 'X';
+	if (flag & NQNFSWRITE)
+		*flags++ = 'O';
+	if (flag & NQNFSEVICTED)
+		*flags++ = 'G';
+	if (flag == 0)
+		*flags++ = '-';
+	*flags = '\0';
+
+#define VT	np->n_vattr
+	(void)printf(" %6d %5s", VT.va_fileid, flagbuf);
+	type = VT.va_mode & S_IFMT;
+	if (S_ISCHR(VT.va_mode) || S_ISBLK(VT.va_mode))
+		if (usenumflag || ((name = devname(VT.va_rdev, type)) == NULL))
+			(void)printf("   %2d,%-2d", 
+			    major(VT.va_rdev), minor(VT.va_rdev));
+		else
+			(void)printf(" %7s", name);
+	else
+		(void)printf(" %7qd", np->n_size);
+	return (0);
+}
+	
+/*
+ * Given a pointer to a mount structure in kernel space,
+ * read it in and return a usable pointer to it.
+ */
+struct mount *
+getmnt(maddr)
+	struct mount *maddr;
+{
+	static struct mtab {
+		struct mtab *next;
+		struct mount *maddr;
+		struct mount mount;
+	} *mhead = NULL;
+	register struct mtab *mt;
+
+	for (mt = mhead; mt != NULL; mt = mt->next)
+		if (maddr == mt->maddr)
+			return (&mt->mount);
+	if ((mt = malloc(sizeof(struct mtab))) == NULL)
+		err(1, NULL);
+	KGETRET(maddr, &mt->mount, sizeof(struct mount), "mount table");
+	mt->maddr = maddr;
+	mt->next = mhead;
+	mhead = mt;
+	return (&mt->mount);
+}
+
+void
+mount_print(mp)
+	struct mount *mp;
+{
+	register int flags;
+	char *type;
+
+#define ST	mp->mnt_stat
+	(void)printf("*** MOUNT ");
+	switch (ST.f_type) {
+	case MOUNT_NONE:
+		type = "none";
+		break;
+	case MOUNT_UFS:
+		type = "ufs";
+		break;
+	case MOUNT_NFS:
+		type = "nfs";
+		break;
+	case MOUNT_MFS:
+		type = "mfs";
+		break;
+	case MOUNT_MSDOS:
+		type = "pc";
+		break;
+	default:
+		type = "unknown";
+		break;
+	}
+	(void)printf("%s %s on %s", type, ST.f_mntfromname, ST.f_mntonname);
+	if (flags = mp->mnt_flag) {
+		char *comma = "(";
+
+		putchar(' ');
+		/* user visable flags */
+		if (flags & MNT_RDONLY) {
+			(void)printf("%srdonly", comma);
+			flags &= ~MNT_RDONLY;
+			comma = ",";
+		}
+		if (flags & MNT_SYNCHRONOUS) {
+			(void)printf("%ssynchronous", comma);
+			flags &= ~MNT_SYNCHRONOUS;
+			comma = ",";
+		}
+		if (flags & MNT_NOEXEC) {
+			(void)printf("%snoexec", comma);
+			flags &= ~MNT_NOEXEC;
+			comma = ",";
+		}
+		if (flags & MNT_NOSUID) {
+			(void)printf("%snosuid", comma);
+			flags &= ~MNT_NOSUID;
+			comma = ",";
+		}
+		if (flags & MNT_NODEV) {
+			(void)printf("%snodev", comma);
+			flags &= ~MNT_NODEV;
+			comma = ",";
+		}
+		if (flags & MNT_EXPORTED) {
+			(void)printf("%sexport", comma);
+			flags &= ~MNT_EXPORTED;
+			comma = ",";
+		}
+		if (flags & MNT_EXRDONLY) {
+			(void)printf("%sexrdonly", comma);
+			flags &= ~MNT_EXRDONLY;
+			comma = ",";
+		}
+		if (flags & MNT_LOCAL) {
+			(void)printf("%slocal", comma);
+			flags &= ~MNT_LOCAL;
+			comma = ",";
+		}
+		if (flags & MNT_QUOTA) {
+			(void)printf("%squota", comma);
+			flags &= ~MNT_QUOTA;
+			comma = ",";
+		}
+		/* filesystem control flags */
+		if (flags & MNT_UPDATE) {
+			(void)printf("%supdate", comma);
+			flags &= ~MNT_UPDATE;
+			comma = ",";
+		}
+		if (flags & MNT_MLOCK) {
+			(void)printf("%slock", comma);
+			flags &= ~MNT_MLOCK;
+			comma = ",";
+		}
+		if (flags & MNT_MWAIT) {
+			(void)printf("%swait", comma);
+			flags &= ~MNT_MWAIT;
+			comma = ",";
+		}
+		if (flags & MNT_MPBUSY) {
+			(void)printf("%sbusy", comma);
+			flags &= ~MNT_MPBUSY;
+			comma = ",";
+		}
+		if (flags & MNT_MPWANT) {
+			(void)printf("%swant", comma);
+			flags &= ~MNT_MPWANT;
+			comma = ",";
+		}
+		if (flags & MNT_UNMOUNT) {
+			(void)printf("%sunmount", comma);
+			flags &= ~MNT_UNMOUNT;
+			comma = ",";
+		}
+		if (flags)
+			(void)printf("%sunknown_flags:%x", comma, flags);
+		(void)printf(")");
+	}
+	(void)printf("\n");
+#undef ST
+}
+
+struct e_vnode *
+loadvnodes(avnodes)
+	int *avnodes;
+{
+	int mib[2];
+	size_t copysize;
+	struct e_vnode *vnodebase;
+
+	if (memf != NULL) {
+		/*
+		 * do it by hand
+		 */
+		return (kinfo_vnodes(avnodes));
+	}
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_VNODE;
+	if (sysctl(mib, 2, NULL, &copysize, NULL, 0) == -1)
+		err(1, "sysctl: KERN_VNODE");
+	if ((vnodebase = malloc(copysize)) == NULL)
+		err(1, NULL);
+	if (sysctl(mib, 2, vnodebase, &copysize, NULL, 0) == -1)
+		err(1, "sysctl: KERN_VNODE");
+	if (copysize % sizeof(struct e_vnode))
+		errx(1, "vnode size mismatch");
+	*avnodes = copysize / sizeof(struct e_vnode);
+
+	return (vnodebase);
+}
+
+/*
+ * simulate what a running kernel does in in kinfo_vnode
+ */
+struct e_vnode *
+kinfo_vnodes(avnodes)
+	int *avnodes;
+{
+	struct mntlist mountlist;
+	struct mount *mp, mount;
+	struct vnode *vp, vnode;
+	char *vbuf, *evbuf, *bp;
+	int num, numvnodes;
+
+#define VPTRSZ  sizeof(struct vnode *)
+#define VNODESZ sizeof(struct vnode)
+
+	KGET(V_NUMV, numvnodes);
+	if ((vbuf = malloc((numvnodes + 20) * (VPTRSZ + VNODESZ))) == NULL)
+		err(1, NULL);
+	bp = vbuf;
+	evbuf = vbuf + (numvnodes + 20) * (VPTRSZ + VNODESZ);
+	KGET(V_MOUNTLIST, mountlist);
+	for (num = 0, mp = mountlist.tqh_first;
+	    mp != NULL; mp = mp->mnt_list.tqe_next) {
+		KGET2(mp, &mount, sizeof(mount), "mount entry");
+		for (vp = mount.mnt_vnodelist.lh_first;
+		    vp != NULL; vp = vp->v_mntvnodes.le_next) {
+			KGET2(vp, &vnode, sizeof(vnode), "vnode");
+			if ((bp + VPTRSZ + VNODESZ) > evbuf)
+				/* XXX - should realloc */
+				errx(1, "no more room for vnodes");
+			memmove(bp, &vp, VPTRSZ);
+			bp += VPTRSZ;
+			memmove(bp, &vnode, VNODESZ);
+			bp += VNODESZ;
+			num++;
+		}
+	}
+	*avnodes = num;
+	return ((struct e_vnode *)vbuf);
+}
+	
+char hdr[]="  LINE RAW CAN OUT  HWT LWT     COL STATE  SESS  PGID DISC\n";
+int ttyspace = 128;
+
+void
+ttymode()
+{
+	struct tty *tty;
+
+	if ((tty = malloc(ttyspace * sizeof(*tty))) == NULL)
+		err(1, NULL);
+#ifndef hp300
+	(void)printf("1 console\n");
+	KGET(SCONS, *tty);
+	(void)printf(hdr);
+	ttyprt(&tty[0], 0);
+#endif
+#ifdef vax
+	if (nl[SNQD].n_type != 0) 
+		qdss();
+	if (nl[SNDZ].n_type != 0)
+		ttytype(tty, "dz", SDZ, SNDZ);
+	if (nl[SNDH].n_type != 0)
+		ttytype(tty, "dh", SDH, SNDH);
+	if (nl[SNDMF].n_type != 0)
+		ttytype(tty, "dmf", SDMF, SNDMF);
+	if (nl[SNDHU].n_type != 0)
+		ttytype(tty, "dhu", SDHU, SNDHU);
+	if (nl[SNDMZ].n_type != 0)
+		ttytype(tty, "dmz", SDMZ, SNDMZ);
+#endif
+#ifdef tahoe
+	if (nl[SNVX].n_type != 0)
+		ttytype(tty, "vx", SVX, SNVX);
+	if (nl[SNMP].n_type != 0)
+		ttytype(tty, "mp", SMP, SNMP);
+#endif
+#ifdef hp300
+	if (nl[SNITE].n_type != 0)
+		ttytype(tty, "ite", SITE, SNITE);
+	if (nl[SNDCA].n_type != 0)
+		ttytype(tty, "dca", SDCA, SNDCA);
+	if (nl[SNDCM].n_type != 0)
+		ttytype(tty, "dcm", SDCM, SNDCM);
+	if (nl[SNDCL].n_type != 0)
+		ttytype(tty, "dcl", SDCL, SNDCL);
+#endif
+#ifdef mips
+	if (nl[SNDC].n_type != 0)
+		ttytype(tty, "dc", SDC, SNDC);
+#endif
+	if (nl[SNPTY].n_type != 0)
+		ttytype(tty, "pty", SPTY, SNPTY);
+}
+
+void
+ttytype(tty, name, type, number)
+	register struct tty *tty;
+	char *name;
+	int type, number;
+{
+	register struct tty *tp;
+	int ntty;
+
+	if (tty == NULL)
+		return;
+	KGET(number, ntty);
+	(void)printf("%d %s %s\n", ntty, name, (ntty == 1) ? "line" : "lines");
+	if (ntty > ttyspace) {
+		ttyspace = ntty;
+		if ((tty = realloc(tty, ttyspace * sizeof(*tty))) == 0)
+			err(1, NULL);
+	}
+	KGET1(type, tty, ntty * sizeof(struct tty), "tty structs");
+	(void)printf(hdr);
+	for (tp = tty; tp < &tty[ntty]; tp++)
+		ttyprt(tp, tp - tty);
+}
+
+struct {
+	int flag;
+	char val;
+} ttystates[] = {
+	{ TS_WOPEN,	'W'},
+	{ TS_ISOPEN,	'O'},
+	{ TS_CARR_ON,	'C'},
+	{ TS_TIMEOUT,	'T'},
+	{ TS_FLUSH,	'F'},
+	{ TS_BUSY,	'B'},
+	{ TS_ASLEEP,	'A'},
+	{ TS_XCLUDE,	'X'},
+	{ TS_TTSTOP,	'S'},
+	{ TS_TBLOCK,	'K'},
+	{ TS_ASYNC,	'Y'},
+	{ TS_BKSL,	'D'},
+	{ TS_ERASE,	'E'},
+	{ TS_LNCH,	'L'},
+	{ TS_TYPEN,	'P'},
+	{ TS_CNTTB,	'N'},
+	{ 0,	       '\0'},
+};
+
+void
+ttyprt(tp, line)
+	register struct tty *tp;
+	int line;
+{
+	register int i, j;
+	pid_t pgid;
+	char *name, state[20];
+
+	if (usenumflag || tp->t_dev == 0 ||
+	   (name = devname(tp->t_dev, S_IFCHR)) == NULL)
+		(void)printf("%7d ", line); 
+	else
+		(void)printf("%7s ", name);
+	(void)printf("%2d %3d ", tp->t_rawq.c_cc, tp->t_canq.c_cc);
+	(void)printf("%3d %4d %3d %3d ", tp->t_outq.c_cc, 
+		tp->t_hiwat, tp->t_lowat, tp->t_column);
+	for (i = j = 0; ttystates[i].flag; i++)
+		if (tp->t_state&ttystates[i].flag)
+			state[j++] = ttystates[i].val;
+	if (j == 0)
+		state[j++] = '-';
+	state[j] = '\0';
+	(void)printf("%-4s %6x", state, (u_long)tp->t_session & ~KERNBASE);
+	pgid = 0;
+	if (tp->t_pgrp != NULL)
+		KGET2(&tp->t_pgrp->pg_id, &pgid, sizeof(pid_t), "pgid");
+	(void)printf("%6d ", pgid);
+	switch (tp->t_line) {
+	case TTYDISC:
+		(void)printf("term\n");
+		break;
+	case TABLDISC:
+		(void)printf("tab\n");
+		break;
+	case SLIPDISC:
+		(void)printf("slip\n");
+		break;
+	default:
+		(void)printf("%d\n", tp->t_line);
+		break;
+	}
+}
+
+void
+filemode()
+{
+	register struct file *fp;
+	struct file *addr;
+	char *buf, flagbuf[16], *fbp;
+	int len, maxfile, nfile;
+	static char *dtypes[] = { "???", "inode", "socket" };
+
+	KGET(FNL_MAXFILE, maxfile);
+	if (totalflag) {
+		KGET(FNL_NFILE, nfile);
+		(void)printf("%3d/%3d files\n", nfile, maxfile);
+		return;
+	}
+	if (getfiles(&buf, &len) == -1)
+		return;
+	/*
+	 * Getfiles returns in malloc'd memory a pointer to the first file
+	 * structure, and then an array of file structs (whose addresses are
+	 * derivable from the previous entry).
+	 */
+	addr = *((struct file **)buf);
+	fp = (struct file *)(buf + sizeof(struct file *));
+	nfile = (len - sizeof(struct file *)) / sizeof(struct file);
+	
+	(void)printf("%d/%d open files\n", nfile, maxfile);
+	(void)printf("   LOC   TYPE    FLG     CNT  MSG    DATA    OFFSET\n");
+	for (; (char *)fp < buf + len; addr = fp->f_filef, fp++) {
+		if ((unsigned)fp->f_type > DTYPE_SOCKET)
+			continue;
+		(void)printf("%x ", addr);
+		(void)printf("%-8.8s", dtypes[fp->f_type]);
+		fbp = flagbuf;
+		if (fp->f_flag & FREAD)
+			*fbp++ = 'R';
+		if (fp->f_flag & FWRITE)
+			*fbp++ = 'W';
+		if (fp->f_flag & FAPPEND)
+			*fbp++ = 'A';
+#ifdef FSHLOCK	/* currently gone */
+		if (fp->f_flag & FSHLOCK)
+			*fbp++ = 'S';
+		if (fp->f_flag & FEXLOCK)
+			*fbp++ = 'X';
+#endif
+		if (fp->f_flag & FASYNC)
+			*fbp++ = 'I';
+		*fbp = '\0';
+		(void)printf("%6s  %3d", flagbuf, fp->f_count);
+		(void)printf("  %3d", fp->f_msgcount);
+		(void)printf("  %8.1x", fp->f_data);
+		if (fp->f_offset < 0)
+			(void)printf("  %qx\n", fp->f_offset);
+		else
+			(void)printf("  %qd\n", fp->f_offset);
+	}
+	free(buf);
+}
+
+int
+getfiles(abuf, alen)
+	char **abuf;
+	int *alen;
+{
+	size_t len;
+	int mib[2];
+	char *buf;
+
+	/*
+	 * XXX
+	 * Add emulation of KINFO_FILE here.
+	 */
+	if (memf != NULL)
+		errx(1, "files on dead kernel, not implemented\n");
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_FILE;
+	if (sysctl(mib, 2, NULL, &len, NULL, 0) == -1) {
+		warn("sysctl: KERN_FILE");
+		return (-1);
+	}
+	if ((buf = malloc(len)) == NULL)
+		err(1, NULL);
+	if (sysctl(mib, 2, buf, &len, NULL, 0) == -1) {
+		warn("sysctl: KERN_FILE");
+		return (-1);
+	}
+	*abuf = buf;
+	*alen = len;
+	return (0);
+}
+
+/*
+ * swapmode is based on a program called swapinfo written
+ * by Kevin Lahey <kml@rokkaku.atl.ga.us>.
+ */
+void
+swapmode()
+{
+	char *header;
+	int hlen, nswap, nswdev, dmmax, nswapmap, niswap, niswdev;
+	int s, e, div, i, l, avail, nfree, npfree, used;
+	struct swdevt *sw;
+	long blocksize, *perdev;
+	struct map *swapmap, *kswapmap;
+	struct mapent *mp;
+
+	KGET(VM_NSWAP, nswap);
+	KGET(VM_NSWDEV, nswdev);
+	KGET(VM_DMMAX, dmmax);
+	KGET(VM_NSWAPMAP, nswapmap);
+	KGET(VM_SWAPMAP, kswapmap);	/* kernel `swapmap' is a pointer */
+	if ((sw = malloc(nswdev * sizeof(*sw))) == NULL ||
+	    (perdev = malloc(nswdev * sizeof(*perdev))) == NULL ||
+	    (mp = malloc(nswapmap * sizeof(*mp))) == NULL)
+		err(1, "malloc");
+	KGET1(VM_SWDEVT, sw, nswdev * sizeof(*sw), "swdevt");
+	KGET2((long)kswapmap, mp, nswapmap * sizeof(*mp), "swapmap");
+
+	/* Supports sequential swap */
+	if (nl[VM_NISWAP].n_value != 0) {
+		KGET(VM_NISWAP, niswap);
+		KGET(VM_NISWDEV, niswdev);
+	} else {
+		niswap = nswap;
+		niswdev = nswdev;
+	}
+
+	/* First entry in map is `struct map'; rest are mapent's. */
+	swapmap = (struct map *)mp;
+	if (nswapmap != swapmap->m_limit - (struct mapent *)kswapmap)
+		errx(1, "panic: nswapmap goof");
+
+	/* Count up swap space. */
+	nfree = 0;
+	memset(perdev, 0, nswdev * sizeof(*perdev));
+	for (mp++; mp->m_addr != 0; mp++) {
+		s = mp->m_addr;			/* start of swap region */
+		e = mp->m_addr + mp->m_size;	/* end of region */
+		nfree += mp->m_size;
+
+		/*
+		 * Swap space is split up among the configured disks.
+		 *
+		 * For interleaved swap devices, the first dmmax blocks
+		 * of swap space some from the first disk, the next dmmax
+		 * blocks from the next, and so on up to niswap blocks.
+		 *
+		 * Sequential swap devices follow the interleaved devices
+		 * (i.e. blocks starting at niswap) in the order in which
+		 * they appear in the swdev table.  The size of each device
+		 * will be a multiple of dmmax.
+		 *
+		 * The list of free space joins adjacent free blocks,
+		 * ignoring device boundries.  If we want to keep track
+		 * of this information per device, we'll just have to
+		 * extract it ourselves.  We know that dmmax-sized chunks
+		 * cannot span device boundaries (interleaved or sequential)
+		 * so we loop over such chunks assigning them to devices.
+		 */
+		i = -1;
+		while (s < e) {		/* XXX this is inefficient */
+			int bound = roundup(s+1, dmmax);
+
+			if (bound > e)
+				bound = e;
+			if (bound <= niswap) {
+				/* Interleaved swap chunk. */
+				if (i == -1)
+					i = (s / dmmax) % niswdev;
+				perdev[i] += bound - s;
+				if (++i >= niswdev)
+					i = 0;
+			} else {
+				/* Sequential swap chunk. */
+				if (i < niswdev) {
+					i = niswdev;
+					l = niswap + sw[i].sw_nblks;
+				}
+				while (s >= l) {
+					/* XXX don't die on bogus blocks */
+					if (i == nswdev-1)
+						break;
+					l += sw[++i].sw_nblks;
+				}
+				perdev[i] += bound - s;
+			}
+			s = bound;
+		}
+	}
+
+	header = getbsize(&hlen, &blocksize);
+	if (!totalflag)
+		(void)printf("%-11s %*s %8s %8s %8s  %s\n",
+		    "Device", hlen, header,
+		    "Used", "Avail", "Capacity", "Type");
+	div = blocksize / 512;
+	avail = npfree = 0;
+	for (i = 0; i < nswdev; i++) {
+		int xsize, xfree;
+
+		if (!totalflag)
+			(void)printf("/dev/%-6s %*d ",
+			    devname(sw[i].sw_dev, S_IFBLK),
+			    hlen, sw[i].sw_nblks / div);
+
+		/*
+		 * Don't report statistics for partitions which have not
+		 * yet been activated via swapon(8).
+		 */
+		if (!(sw[i].sw_flags & SW_FREED)) {
+			if (totalflag)
+				continue;
+			(void)printf(" *** not available for swapping ***\n");
+			continue;
+		}
+		xsize = sw[i].sw_nblks;
+		xfree = perdev[i];
+		used = xsize - xfree;
+		npfree++;
+		avail += xsize;
+		if (totalflag)
+			continue;
+		(void)printf("%8d %8d %5.0f%%    %s\n", 
+		    used / div, xfree / div,
+		    (double)used / (double)xsize * 100.0,
+		    (sw[i].sw_flags & SW_SEQUENTIAL) ?
+			     "Sequential" : "Interleaved");
+	}
+
+	/* 
+	 * If only one partition has been set up via swapon(8), we don't
+	 * need to bother with totals.
+	 */
+	used = avail - nfree;
+	if (totalflag) {
+		(void)printf("%dM/%dM swap space\n", used / 2048, avail / 2048);
+		return;
+	}
+	if (npfree > 1) {
+		(void)printf("%-11s %*d %8d %8d %5.0f%%\n",
+		    "Total", hlen, avail / div, used / div, nfree / div,
+		    (double)used / (double)avail * 100.0);
+	}
+}
+
+void
+usage()
+{
+	(void)fprintf(stderr,
+	    "usage: pstat -Tfnstv [system] [-M core] [-N system]\n");
+	exit(1);
+}