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File: [cvs.NetBSD.org] / src / bin / ps / print.c (download)

Revision 1.106.2.1, Wed Apr 1 00:25:20 2009 UTC (12 years ago) by snj
Branch: netbsd-5
CVS Tags: netbsd-5-2-RELEASE, netbsd-5-2-RC1, netbsd-5-2-3-RELEASE, netbsd-5-2-2-RELEASE, netbsd-5-2-1-RELEASE, netbsd-5-2, netbsd-5-1-RELEASE, netbsd-5-1-RC4, netbsd-5-1-RC3, netbsd-5-1-RC2, netbsd-5-1-RC1, netbsd-5-1-5-RELEASE, netbsd-5-1-4-RELEASE, netbsd-5-1-3-RELEASE, netbsd-5-1-2-RELEASE, netbsd-5-1-1-RELEASE, netbsd-5-1, netbsd-5-0-RELEASE, netbsd-5-0-RC4, netbsd-5-0-2-RELEASE, netbsd-5-0-1-RELEASE, netbsd-5-0, matt-nb5-pq3-base, matt-nb5-pq3, matt-nb5-mips64-u2-k2-k4-k7-k8-k9, matt-nb5-mips64-u1-k1-k5, matt-nb5-mips64-premerge-20101231, matt-nb5-mips64-premerge-20091211, matt-nb5-mips64-k15, matt-nb5-mips64, matt-nb4-mips64-k7-u2a-k9b
Changes since 1.106: +3 -4 lines

Pull up following revision(s) (requested by mrg in ticket #622):
	bin/csh/csh.1: revision 1.46
	bin/csh/func.c: revision 1.37
	bin/ps/print.c: revision 1.111
	bin/ps/ps.c: revision 1.74
	bin/sh/miscbltin.c: revision 1.38
	bin/sh/sh.1: revision 1.92 via patch
	external/bsd/top/dist/machine/m_netbsd.c: revision 1.7
	lib/libkvm/kvm_proc.c: revision 1.82
	sys/arch/mips/mips/cpu_exec.c: revision 1.55
	sys/compat/darwin/darwin_exec.c: revision 1.57
	sys/compat/ibcs2/ibcs2_exec.c: revision 1.73
	sys/compat/irix/irix_resource.c: revision 1.15
	sys/compat/linux/arch/amd64/linux_exec_machdep.c: revision 1.16
	sys/compat/linux/arch/i386/linux_exec_machdep.c: revision 1.12
	sys/compat/linux/common/linux_limit.h: revision 1.5
	sys/compat/osf1/osf1_resource.c: revision 1.14
	sys/compat/svr4/svr4_resource.c: revision 1.18
	sys/compat/svr4_32/svr4_32_resource.c: revision 1.17
	sys/kern/exec_subr.c: revision 1.62
	sys/kern/init_sysctl.c: revision 1.160
	sys/kern/kern_exec.c: revision 1.288
	sys/kern/kern_resource.c: revision 1.151
	sys/sys/param.h: patch
	sys/sys/resource.h: revision 1.31
	sys/sys/sysctl.h: revision 1.184
	sys/uvm/uvm_extern.h: revision 1.153
	sys/uvm/uvm_glue.c: revision 1.136
	sys/uvm/uvm_mmap.c: revision 1.128
	usr.bin/systat/ps.c: revision 1.32
- - add new RLIMIT_AS (aka RLIMIT_VMEM) resource that limits the total
address space available to processes.  this limit exists in most other
modern unix variants, and like most of them, our defaults are unlimited.
remove the old mmap / rlimit.datasize hack.
- - adds the VMCMD_STACK flag to all the stack-creation vmcmd callers.
it is currently unused, but was added a few years ago.
- - add a pair of new process size values to kinfo_proc2{}. one is the
total size of the process memory map, and the other is the total size
adjusted for unused stack space (since most processes have a lot of
this...)
- - patch sh, and csh to notice RLIMIT_AS.  (in some cases, the alias
RLIMIT_VMEM was already present and used if availble.)
- - patch ps, top and systat to notice the new k_vm_vsize member of
kinfo_proc2{}.
- - update irix, svr4, svr4_32, linux and osf1 emulations to support
this information.  (freebsd could be done, but that it's best left
as part of the full-update of compat/freebsd.)
this addresses PR 7897.  it also gives correct memory usage values,
which have never been entirely correct (since mmap), and have been
very incorrect since jemalloc() was enabled.
tested on i386 and sparc64, build tested on several other platforms.
thanks to many folks for feedback and testing but most espcially
chuq and yamt for critical suggestions that lead to this patch not
having a special ugliness i wasn't happy with anyway :-)

/*	$NetBSD: print.c,v 1.106.2.1 2009/04/01 00:25:20 snj Exp $	*/

/*
 * Copyright (c) 2000, 2007 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Simon Burge.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
 */

/*
 * Copyright (c) 1990, 1993, 1994
 *	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. 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.
 */

#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)print.c	8.6 (Berkeley) 4/16/94";
#else
__RCSID("$NetBSD: print.c,v 1.106.2.1 2009/04/01 00:25:20 snj Exp $");
#endif
#endif /* not lint */

#include <sys/param.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/lwp.h>
#include <sys/proc.h>
#include <sys/stat.h>
#include <sys/ucred.h>
#include <sys/sysctl.h>

#include <err.h>
#include <grp.h>
#include <kvm.h>
#include <math.h>
#include <nlist.h>
#include <pwd.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <tzfile.h>
#include <unistd.h>

#include "ps.h"

static char *cmdpart(char *);
static void  printval(void *, VAR *, int);
static int   titlecmp(char *, char **);

static void  doubleprintorsetwidth(VAR *, double, int, int);
static void  intprintorsetwidth(VAR *, int, int);
static void  strprintorsetwidth(VAR *, const char *, int);

static time_t now;
static int ncpu;
static u_int64_t *cp_id;

#define	min(a,b)	((a) <= (b) ? (a) : (b))

static int
iwidth(u_int64_t v)
{
	u_int64_t nlim, lim;
	int w = 1;

	for (lim = 10; v >= lim; lim = nlim) {
		nlim = lim * 10;
		w++;
		if (nlim < lim)
			break;
	}
	return w;
}

static char *
cmdpart(char *arg0)
{
	char *cp;

	return ((cp = strrchr(arg0, '/')) != NULL ? cp + 1 : arg0);
}

void
printheader(void)
{
	int len;
	VAR *v;
	struct varent *vent;
	static int firsttime = 1;
	static int noheader = 0;

	/*
	 * If all the columns have user-specified null headers,
	 * don't print the blank header line at all.
	 */
	if (firsttime) {
		SIMPLEQ_FOREACH(vent, &displaylist, next) {
			if (vent->var->header[0])
				break;
		}
		if (vent == NULL) {
			noheader = 1;
			firsttime = 0;
		}

	}
	if (noheader)
		return;

	SIMPLEQ_FOREACH(vent, &displaylist, next) {
		v = vent->var;
		if (firsttime) {
			len = strlen(v->header);
			if (len > v->width)
				v->width = len;
			totwidth += v->width + 1;	/* +1 for space */
		}
		if (v->flag & LJUST) {
			if (SIMPLEQ_NEXT(vent, next) == NULL)	/* last one */
				(void)printf("%s", v->header);
			else
				(void)printf("%-*s", v->width,
				    v->header);
		} else
			(void)printf("%*s", v->width, v->header);
		if (SIMPLEQ_NEXT(vent, next) != NULL)
			(void)putchar(' ');
	}
	(void)putchar('\n');
	if (firsttime) {
		firsttime = 0;
		totwidth--;	/* take off last space */
	}
}

/*
 * Return 1 if the command name in the argument vector (u-area) does
 * not match the command name (p_comm)
 */
static int
titlecmp(char *name, char **argv)
{
	char *title;
	int namelen;


	/* no argument vector == no match; system processes/threads do that */
	if (argv == 0 || argv[0] == 0)
		return (1);

	title = cmdpart(argv[0]);

	/* the basename matches */
	if (!strcmp(name, title))
		return (0);

	/* handle login shells, by skipping the leading - */
	if (title[0] == '-' && !strcmp(name, title + 1))
		return (0);

	namelen = strlen(name);

	/* handle daemons that report activity as daemonname: activity */
	if (argv[1] == 0 &&
	    !strncmp(name, title, namelen) &&
	    title[namelen + 0] == ':' &&
	    title[namelen + 1] == ' ')
		return (0);

	return (1);
}

static void
doubleprintorsetwidth(VAR *v, double val, int prec, int mode)
{
	int fmtlen;

	if (mode == WIDTHMODE) {
		if (val < 0.0 && val < v->longestnd) {
			fmtlen = (int)log10(-val) + prec + 2;
			v->longestnd = val;
			if (fmtlen > v->width)
				v->width = fmtlen;
		} else if (val > 0.0 && val > v->longestpd) {
			fmtlen = (int)log10(val) + prec + 1;
			v->longestpd = val;
			if (fmtlen > v->width)
				v->width = fmtlen;
		}
	} else {
		(void)printf("%*.*f", v->width, prec, val);
	}
}

static void
intprintorsetwidth(VAR *v, int val, int mode)
{
	int fmtlen;

	if (mode == WIDTHMODE) {
		if (val < 0 && val < v->longestn) {
			v->longestn = val;
			fmtlen = iwidth(-val) + 1;
			if (fmtlen > v->width)
				v->width = fmtlen;
		} else if (val > 0 && val > v->longestp) {
			v->longestp = val;
			fmtlen = iwidth(val);
			if (fmtlen > v->width)
				v->width = fmtlen;
		}
	} else
		(void)printf("%*d", v->width, val);
}

static void
strprintorsetwidth(VAR *v, const char *str, int mode)
{
	int len;

	if (mode == WIDTHMODE) {
		len = strlen(str);
		if (len > v->width)
			v->width = len;
	} else {
		if (v->flag & LJUST)
			(void)printf("%-*.*s", v->width, v->width, str);
		else
			(void)printf("%*.*s", v->width, v->width, str);
	}
}

void
command(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *ki;
	VAR *v;
	int left;
	char **argv, **p, *name;

	if (mode == WIDTHMODE)
		return;

	ki = arg;
	v = ve->var;
	if (SIMPLEQ_NEXT(ve, next) != NULL || termwidth != UNLIMITED) {
		if (SIMPLEQ_NEXT(ve, next) == NULL) {
			left = termwidth - (totwidth - v->width);
			if (left < 1) /* already wrapped, just use std width */
				left = v->width;
		} else
			left = v->width;
	} else
		left = -1;
	if (needenv && kd) {
		argv = kvm_getenvv2(kd, ki, termwidth);
		if ((p = argv) != NULL) {
			while (*p) {
				fmt_puts(*p, &left);
				p++;
				fmt_putc(' ', &left);
			}
		}
	}
	if (needcomm) {
		name = ki->p_comm;
		if (!commandonly) {
			argv = kvm_getargv2(kd, ki, termwidth);
			if ((p = argv) != NULL) {
				while (*p) {
					fmt_puts(*p, &left);
					p++;
					fmt_putc(' ', &left);
					if (v->flag & ARGV0)
						break;
				}
				if (!(v->flag & ARGV0) &&
				    titlecmp(name, argv)) {
					/*
					 * append the real command name within
					 * parentheses, if the command name
					 * does not match the one in the
					 * argument vector
					 */
					fmt_putc('(', &left);
					fmt_puts(name, &left);
					fmt_putc(')', &left);
				}
			} else {
				/*
				 * Commands that don't set an argv vector
				 * are printed with square brackets if they
				 * are system commands.  Otherwise they are
				 * printed within parentheses.
				 */
				if (ki->p_flag & P_SYSTEM) {
					fmt_putc('[', &left);
					fmt_puts(name, &left);
					fmt_putc(']', &left);
				} else {
					fmt_putc('(', &left);
					fmt_puts(name, &left);
					fmt_putc(')', &left);
				}
			}
		} else {
			fmt_puts(name, &left);
		}
	}
	if (SIMPLEQ_NEXT(ve, next) != NULL && left > 0)
		(void)printf("%*s", left, "");
}

void
groups(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *ki;
	VAR *v;
	int left, i;
	char buf[16], *p;

	if (mode == WIDTHMODE)
		return;

	ki = arg;
	v = ve->var;
	if (SIMPLEQ_NEXT(ve, next) != NULL || termwidth != UNLIMITED) {
		if (SIMPLEQ_NEXT(ve, next) == NULL) {
			left = termwidth - (totwidth - v->width);
			if (left < 1) /* already wrapped, just use std width */
				left = v->width;
		} else
			left = v->width;
	} else
		left = -1;

	if (ki->p_ngroups == 0) {
		fmt_putc('-', &left);
		return;
	}

	for (i = 0; i < ki->p_ngroups; i++) {
		(void)snprintf(buf, sizeof(buf), "%d", ki->p_groups[i]);
		if (i)
			fmt_putc(' ', &left);
		for (p = &buf[0]; *p; p++)
			fmt_putc(*p, &left);
	}

	if (SIMPLEQ_NEXT(ve, next) != NULL && left > 0)
		(void)printf("%*s", left, "");
}

void
groupnames(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *ki;
	VAR *v;
	int left, i;
	const char *p;

	if (mode == WIDTHMODE)
		return;

	ki = arg;
	v = ve->var;
	if (SIMPLEQ_NEXT(ve, next) != NULL || termwidth != UNLIMITED) {
		if (SIMPLEQ_NEXT(ve, next) == NULL) {
			left = termwidth - (totwidth - v->width);
			if (left < 1) /* already wrapped, just use std width */
				left = v->width;
		} else
			left = v->width;
	} else
		left = -1;

	if (ki->p_ngroups == 0) {
		fmt_putc('-', &left);
		return;
	}

	for (i = 0; i < ki->p_ngroups; i++) {
		if (i)
			fmt_putc(' ', &left);
		for (p = group_from_gid(ki->p_groups[i], 0); *p; p++)
			fmt_putc(*p, &left);
	}

	if (SIMPLEQ_NEXT(ve, next) != NULL && left > 0)
		(void)printf("%*s", left, "");
}

void
ucomm(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;

	k = arg;
	v = ve->var;
	strprintorsetwidth(v, k->p_comm, mode);
}

void
emul(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;

	k = arg;
	v = ve->var;
	strprintorsetwidth(v, k->p_ename, mode);
}

void
logname(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;

	k = arg;
	v = ve->var;
	strprintorsetwidth(v, k->p_login, mode);
}

void
state(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	int flag, is_zombie;
	char *cp;
	VAR *v;
	char buf[16];

	k = arg;
	is_zombie = 0;
	v = ve->var;
	flag = k->p_flag;
	cp = buf;

	switch (k->p_stat) {

	case LSSTOP:
		*cp = 'T';
		break;

	case LSSLEEP:
		if (flag & L_SINTR)	/* interruptable (long) */
			*cp = k->p_slptime >= maxslp ? 'I' : 'S';
		else
			*cp = 'D';
		break;

	case LSRUN:
	case LSIDL:
		*cp = 'R';
		break;

	case LSONPROC:
		*cp = 'O';
		break;

	case LSZOMB:
		*cp = 'Z';
		is_zombie = 1;
		break;

	case LSSUSPENDED:
		*cp = 'U';
		break;

	default:
		*cp = '?';
	}
	cp++;
	if (flag & L_INMEM) {
	} else
		*cp++ = 'W';
	if (k->p_nice < NZERO)
		*cp++ = '<';
	else if (k->p_nice > NZERO)
		*cp++ = 'N';
	if (flag & P_TRACED)
		*cp++ = 'X';
	if (flag & P_WEXIT && !is_zombie)
		*cp++ = 'E';
	if (flag & P_PPWAIT)
		*cp++ = 'V';
	if (flag & P_SYSTEM)
		*cp++ = 'K';
	/* system process might have this too, don't need to double up */
	else if (k->p_holdcnt)
		*cp++ = 'L';
	if (k->p_eflag & EPROC_SLEADER)
		*cp++ = 's';
	if (flag & P_SA)
		*cp++ = 'a';
	else if (k->p_nlwps > 1)
		*cp++ = 'l';
	if ((flag & P_CONTROLT) && k->p__pgid == k->p_tpgid)
		*cp++ = '+';
	*cp = '\0';
	strprintorsetwidth(v, buf, mode);
}

void
lstate(void *arg, VARENT *ve, int mode)
{
	struct kinfo_lwp *k;
	int flag, is_zombie;
	char *cp;
	VAR *v;
	char buf[16];

	k = arg;
	is_zombie = 0;
	v = ve->var;
	flag = k->l_flag;
	cp = buf;

	switch (k->l_stat) {

	case LSSTOP:
		*cp = 'T';
		break;

	case LSSLEEP:
		if (flag & L_SINTR)	/* interruptible (long) */
			*cp = k->l_slptime >= maxslp ? 'I' : 'S';
		else
			*cp = 'D';
		break;

	case LSRUN:
	case LSIDL:
	case LSONPROC:
		*cp = 'R';
		break;

	case LSZOMB:
	case LSDEAD:
		*cp = 'Z';
		is_zombie = 1;
		break;

	case LSSUSPENDED:
		*cp = 'U';
		break;

	default:
		*cp = '?';
	}
	cp++;
	if (flag & L_INMEM) {
	} else
		*cp++ = 'W';
	if (k->l_holdcnt)
		*cp++ = 'L';
	if (flag & L_DETACHED)
		*cp++ = '-';
	*cp = '\0';
	strprintorsetwidth(v, buf, mode);
}

void
pnice(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;

	k = arg;
	v = ve->var;
	intprintorsetwidth(v, k->p_nice - NZERO, mode);
}

void
pri(void *arg, VARENT *ve, int mode)
{
	struct kinfo_lwp *l;
	VAR *v;

	l = arg;
	v = ve->var;
	intprintorsetwidth(v, l->l_priority, mode);
}

void
uname(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;

	k = arg;
	v = ve->var;
	strprintorsetwidth(v, user_from_uid(k->p_uid, 0), mode);
}

void
runame(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;

	k = arg;
	v = ve->var;
	strprintorsetwidth(v, user_from_uid(k->p_ruid, 0), mode);
}

void
svuname(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;

	k = arg;
	v = ve->var;
	strprintorsetwidth(v, user_from_uid(k->p_svuid, 0), mode);
}

void
gname(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;

	k = arg;
	v = ve->var;
	strprintorsetwidth(v, group_from_gid(k->p_gid, 0), mode);
}

void
rgname(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;

	k = arg;
	v = ve->var;
	strprintorsetwidth(v, group_from_gid(k->p_rgid, 0), mode);
}

void
svgname(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;

	k = arg;
	v = ve->var;
	strprintorsetwidth(v, group_from_gid(k->p_svgid, 0), mode);
}

void
tdev(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;
	dev_t dev;
	char buff[16];

	k = arg;
	v = ve->var;
	dev = k->p_tdev;
	if (dev == NODEV) {
		if (mode == PRINTMODE)
			(void)printf("%*s", v->width, "?");
		else
			if (v->width < 2)
				v->width = 2;
	} else {
		(void)snprintf(buff, sizeof(buff),
		    "%d/%d", major(dev), minor(dev));
		strprintorsetwidth(v, buff, mode);
	}
}

void
tname(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;
	dev_t dev;
	const char *ttname;
	int noctty;

	k = arg;
	v = ve->var;
	dev = k->p_tdev;
	if (dev == NODEV || (ttname = devname(dev, S_IFCHR)) == NULL) {
		if (mode == PRINTMODE)
			(void)printf("%-*s", v->width, "?");
		else
			if (v->width < 2)
				v->width = 2;
	} else {
		noctty = !(k->p_eflag & EPROC_CTTY) ? 1 : 0;
		if (mode == WIDTHMODE) {
			int fmtlen;

			fmtlen = strlen(ttname) + noctty;
			if (v->width < fmtlen)
				v->width = fmtlen;
		} else {
			if (noctty)
				(void)printf("%-*s-", v->width - 1, ttname);
			else
				(void)printf("%-*s", v->width, ttname);
		}
	}
}

void
longtname(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;
	dev_t dev;
	const char *ttname;

	k = arg;
	v = ve->var;
	dev = k->p_tdev;
	if (dev == NODEV || (ttname = devname(dev, S_IFCHR)) == NULL) {
		if (mode == PRINTMODE)
			(void)printf("%-*s", v->width, "?");
		else
			if (v->width < 2)
				v->width = 2;
	} else {
		strprintorsetwidth(v, ttname, mode);
	}
}

void
started(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;
	time_t startt;
	struct tm *tp;
	char buf[100], *cp;

	k = arg;
	v = ve->var;
	if (!k->p_uvalid) {
		if (mode == PRINTMODE)
			(void)printf("%*s", v->width, "-");
		return;
	}

	startt = k->p_ustart_sec;
	tp = localtime(&startt);
	if (now == 0)
		(void)time(&now);
	if (now - k->p_ustart_sec < SECSPERDAY)
		/* I *hate* SCCS... */
		(void)strftime(buf, sizeof(buf) - 1, "%l:%" "M%p", tp);
	else if (now - k->p_ustart_sec < DAYSPERWEEK * SECSPERDAY)
		/* I *hate* SCCS... */
		(void)strftime(buf, sizeof(buf) - 1, "%a%" "I%p", tp);
	else
		(void)strftime(buf, sizeof(buf) - 1, "%e%b%y", tp);
	/* %e and %l can start with a space. */
	cp = buf;
	if (*cp == ' ')
		cp++;
	strprintorsetwidth(v, cp, mode);
}

void
lstarted(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;
	time_t startt;
	char buf[100];

	k = arg;
	v = ve->var;
	if (!k->p_uvalid) {
		/*
		 * Minimum width is less than header - we don't
		 * need to check it every time.
		 */
		if (mode == PRINTMODE)
			(void)printf("%*s", v->width, "-");
		return;
	}
	startt = k->p_ustart_sec;

	/* assume all times are the same length */
	if (mode != WIDTHMODE || v->width == 0) {
		(void)strftime(buf, sizeof(buf) -1, "%c",
		    localtime(&startt));
		strprintorsetwidth(v, buf, mode);
	}
}

void
elapsed(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;
	int32_t origseconds, secs, mins, hours, days;
	int fmtlen, printed_something;

	k = arg;
	v = ve->var;
	if (k->p_uvalid == 0) {
		origseconds = 0;
	} else {
		if (now == 0)
			(void)time(&now);
		origseconds = now - k->p_ustart_sec;
		if (origseconds < 0) {
			/*
			 * Don't try to be fancy if the machine's
			 * clock has been rewound to before the
			 * process "started".
			 */
			origseconds = 0;
		}
	}

	secs = origseconds;
	mins = secs / SECSPERMIN;
	secs %= SECSPERMIN;
	hours = mins / MINSPERHOUR;
	mins %= MINSPERHOUR;
	days = hours / HOURSPERDAY;
	hours %= HOURSPERDAY;

	if (mode == WIDTHMODE) {
		if (origseconds == 0)
			/* non-zero so fmtlen is calculated at least once */
			origseconds = 1;

		if (origseconds > v->longestp) {
			v->longestp = origseconds;

			if (days > 0) {
				/* +9 for "-hh:mm:ss" */
				fmtlen = iwidth(days) + 9;
			} else if (hours > 0) {
				/* +6 for "mm:ss" */
				fmtlen = iwidth(hours) + 6;
			} else {
				/* +3 for ":ss" */
				fmtlen = iwidth(mins) + 3;
			}

			if (fmtlen > v->width)
				v->width = fmtlen;
		}
	} else {
		printed_something = 0;
		fmtlen = v->width;

		if (days > 0) {
			(void)printf("%*d", fmtlen - 9, days);
			printed_something = 1;
		} else if (fmtlen > 9) {
			(void)printf("%*s", fmtlen - 9, "");
		}
		if (fmtlen > 9)
			fmtlen = 9;

		if (printed_something) {
			(void)printf("-%.*d", fmtlen - 7, hours);
			printed_something = 1;
		} else if (hours > 0) {
			(void)printf("%*d", fmtlen - 6, hours);
			printed_something = 1;
		} else if (fmtlen > 6) {
			(void)printf("%*s", fmtlen - 6, "");
		}
		if (fmtlen > 6)
			fmtlen = 6;

		/* Don't need to set fmtlen or printed_something any more... */
		if (printed_something) {
			(void)printf(":%.*d", fmtlen - 4, mins);
		} else if (mins > 0) {
			(void)printf("%*d", fmtlen - 3, mins);
		} else if (fmtlen > 3) {
			(void)printf("%*s", fmtlen - 3, "0");
		}

		(void)printf(":%.2d", secs);
	}
}

void
wchan(void *arg, VARENT *ve, int mode)
{
	struct kinfo_lwp *l;
	VAR *v;
	char *buf;

	l = arg;
	v = ve->var;
	if (l->l_wchan) {
		if (l->l_wmesg) {
			strprintorsetwidth(v, l->l_wmesg, mode);
			v->width = min(v->width, KI_WMESGLEN);
		} else {
			(void)asprintf(&buf, "%-*" PRIx64, v->width,
			    l->l_wchan);
			if (buf == NULL)
				err(1, "%s", "");
			strprintorsetwidth(v, buf, mode);
			v->width = min(v->width, KI_WMESGLEN);
			free(buf);
		}
	} else {
		if (mode == PRINTMODE)
			(void)printf("%-*s", v->width, "-");
	}
}

#define	pgtok(a)        (((a)*getpagesize())/1024)

void
vsize(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;

	k = arg;
	v = ve->var;
	intprintorsetwidth(v, pgtok(k->p_vm_msize), mode);
}

void
rssize(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;

	k = arg;
	v = ve->var;
	/* XXX don't have info about shared */
	intprintorsetwidth(v, pgtok(k->p_vm_rssize), mode);
}

void
p_rssize(void *arg, VARENT *ve, int mode)	/* doesn't account for text */
{
	struct kinfo_proc2 *k;
	VAR *v;

	k = arg;
	v = ve->var;
	intprintorsetwidth(v, pgtok(k->p_vm_rssize), mode);
}

void
setncpu(void)
{
	int mib[2];
	size_t size;

	mib[0] = CTL_HW;
	mib[1] = HW_NCPU;
	size = sizeof(ncpu);
	if (sysctl(mib, 2, &ncpu, &size, NULL, 0) == -1) {
		ncpu = 0;
		return;
	}
	cp_id = malloc(sizeof(cp_id[0]) * ncpu);
	if (cp_id == NULL)
		err(1, NULL);
	mib[0] = CTL_KERN;
	mib[1] = KERN_CP_ID;
	size = sizeof(cp_id[0]) * ncpu;
	if (sysctl(mib, 2, cp_id, &size, NULL, 0) == -1)
		ncpu = 0;
}

static int
get_cpunum(u_int64_t id)
{
	int i = 0;
	for (i = 0; i < ncpu; i++)
		if (id == cp_id[i])
			return i;
	return -1;
}

void
cpuid(void *arg, VARENT *ve, int mode)
{
	struct kinfo_lwp *l;
	VAR *v;

	l = arg;
	v = ve->var;
	intprintorsetwidth(v, get_cpunum(l->l_cpuid), mode);
}

void
cputime(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;
	int32_t secs;
	int32_t psecs;	/* "parts" of a second. first micro, then centi */
	int fmtlen;

	k = arg;
	v = ve->var;

	/*
	 * This counts time spent handling interrupts.  We could
	 * fix this, but it is not 100% trivial (and interrupt
	 * time fractions only work on the sparc anyway).	XXX
	 */
	secs = k->p_rtime_sec;
	psecs = k->p_rtime_usec;
	if (sumrusage) {
		secs += k->p_uctime_sec;
		psecs += k->p_uctime_usec;
	}
	/*
	 * round and scale to 100's
	 */
	psecs = (psecs + 5000) / 10000;
	secs += psecs / 100;
	psecs = psecs % 100;

	if (mode == WIDTHMODE) {
		/*
		 * Ugg, this is the only field where a value of 0 is longer
		 * than the column title.
		 * Use SECSPERMIN, because secs is divided by that when
		 * passed to iwidth().
		 */
		if (secs == 0)
			secs = SECSPERMIN;

		if (secs > v->longestp) {
			v->longestp = secs;
			/* "+6" for the ":%02ld.%02ld" in the printf() below */
			fmtlen = iwidth(secs / SECSPERMIN) + 6;
			if (fmtlen > v->width)
				v->width = fmtlen;
		}
	} else {
		(void)printf("%*ld:%02ld.%02ld", v->width - 6,
		    (long)(secs / SECSPERMIN), (long)(secs % SECSPERMIN),
		    (long)psecs);
	}
}

double
getpcpu(k)
	const struct kinfo_proc2 *k;
{
	static int failure;

	if (!nlistread)
		failure = (kd) ? donlist() : 1;
	if (failure)
		return (0.0);

#define	fxtofl(fixpt)	((double)(fixpt) / fscale)

	/* XXX - I don't like this */
	if (k->p_swtime == 0 || (k->p_flag & L_INMEM) == 0 ||
	    k->p_realstat == SZOMB)
		return (0.0);
	if (rawcpu)
		return (100.0 * fxtofl(k->p_pctcpu));
	return (100.0 * fxtofl(k->p_pctcpu) /
		(1.0 - exp(k->p_swtime * log(ccpu))));
}

void
pcpu(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;

	k = arg;
	v = ve->var;
	doubleprintorsetwidth(v, getpcpu(k), 1, mode);
}

double
getpmem(k)
	const struct kinfo_proc2 *k;
{
	static int failure;
	double fracmem;
	int szptudot;

	if (!nlistread)
		failure = (kd) ? donlist() : 1;
	if (failure)
		return (0.0);

	if ((k->p_flag & L_INMEM) == 0)
		return (0.0);
	/* XXX want pmap ptpages, segtab, etc. (per architecture) */
	szptudot = uspace/getpagesize();
	/* XXX don't have info about shared */
	fracmem = ((float)k->p_vm_rssize + szptudot)/mempages;
	return (100.0 * fracmem);
}

void
pmem(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;

	k = arg;
	v = ve->var;
	doubleprintorsetwidth(v, getpmem(k), 1, mode);
}

void
pagein(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;

	k = arg;
	v = ve->var;
	intprintorsetwidth(v, k->p_uvalid ? k->p_uru_majflt : 0, mode);
}

void
maxrss(void *arg, VARENT *ve, int mode)
{
	VAR *v;

	v = ve->var;
	/* No need to check width! */
	if (mode == PRINTMODE)
		(void)printf("%*s", v->width, "-");
}

void
tsize(void *arg, VARENT *ve, int mode)
{
	struct kinfo_proc2 *k;
	VAR *v;

	k = arg;
	v = ve->var;
	intprintorsetwidth(v, pgtok(k->p_vm_tsize), mode);
}

/*
 * Generic output routines.  Print fields from various prototype
 * structures.
 */
static void
printval(bp, v, mode)
	void *bp;
	VAR *v;
	int mode;
{
	static char ofmt[32] = "%";
	int width, vok, fmtlen;
	const char *fcp;
	char *cp;
	int64_t val;
	u_int64_t uval;

	val = 0;	/* XXXGCC -Wuninitialized [hpcarm] */
	uval = 0;	/* XXXGCC -Wuninitialized [hpcarm] */

	/*
	 * Note that the "INF127" check is nonsensical for types
	 * that are or can be signed.
	 */
#define	GET(type)		(*(type *)bp)
#define	CHK_INF127(n)		(((n) > 127) && (v->flag & INF127) ? 127 : (n))

#define	VSIGN	1
#define	VUNSIGN	2
#define	VPTR	3

	if (mode == WIDTHMODE) {
		vok = 0;
		switch (v->type) {
		case CHAR:
			val = GET(char);
			vok = VSIGN;
			break;
		case UCHAR:
			uval = CHK_INF127(GET(u_char));
			vok = VUNSIGN;
			break;
		case SHORT:
			val = GET(short);
			vok = VSIGN;
			break;
		case USHORT:
			uval = CHK_INF127(GET(u_short));
			vok = VUNSIGN;
			break;
		case INT32:
			val = GET(int32_t);
			vok = VSIGN;
			break;
		case INT:
			val = GET(int);
			vok = VSIGN;
			break;
		case UINT:
		case UINT32:
			uval = CHK_INF127(GET(u_int));
			vok = VUNSIGN;
			break;
		case LONG:
			val = GET(long);
			vok = VSIGN;
			break;
		case ULONG:
			uval = CHK_INF127(GET(u_long));
			vok = VUNSIGN;
			break;
		case KPTR:
			uval = GET(u_int64_t);
			vok = VPTR;
			break;
		case KPTR24:
			uval = GET(u_int64_t);
			uval &= 0xffffff;
			vok = VPTR;
			break;
		case INT64:
			val = GET(int64_t);
			vok = VSIGN;
			break;
		case UINT64:
			uval = CHK_INF127(GET(u_int64_t));
			vok = VUNSIGN;
			break;

		case SIGLIST:
		default:
			/* nothing... */;
		}
		switch (vok) {
		case VSIGN:
			if (val < 0 && val < v->longestn) {
				v->longestn = val;
				fmtlen = iwidth(-val) + 1;
				if (fmtlen > v->width)
					v->width = fmtlen;
			} else if (val > 0 && val > v->longestp) {
				v->longestp = val;
				fmtlen = iwidth(val);
				if (fmtlen > v->width)
					v->width = fmtlen;
			}
			return;
		case VUNSIGN:
			if (uval > v->longestu) {
				v->longestu = uval;
				v->width = iwidth(uval);
			}
			return;
		case VPTR:
			fmtlen = 0;
			while (uval > 0) {
				uval >>= 4;
				fmtlen++;
			}
			if (fmtlen > v->width)
				v->width = fmtlen;
			return;
		}
	}

	width = v->width;
	cp = ofmt + 1;
	fcp = v->fmt;
	if (v->flag & LJUST)
		*cp++ = '-';
	*cp++ = '*';
	while ((*cp++ = *fcp++) != '\0')
		continue;

	switch (v->type) {
	case CHAR:
		(void)printf(ofmt, width, GET(char));
		return;
	case UCHAR:
		(void)printf(ofmt, width, CHK_INF127(GET(u_char)));
		return;
	case SHORT:
		(void)printf(ofmt, width, GET(short));
		return;
	case USHORT:
		(void)printf(ofmt, width, CHK_INF127(GET(u_short)));
		return;
	case INT:
		(void)printf(ofmt, width, GET(int));
		return;
	case UINT:
		(void)printf(ofmt, width, CHK_INF127(GET(u_int)));
		return;
	case LONG:
		(void)printf(ofmt, width, GET(long));
		return;
	case ULONG:
		(void)printf(ofmt, width, CHK_INF127(GET(u_long)));
		return;
	case KPTR:
		(void)printf(ofmt, width, GET(u_int64_t));
		return;
	case KPTR24:
		(void)printf(ofmt, width, GET(u_int64_t) & 0xffffff);
		return;
	case INT32:
		(void)printf(ofmt, width, GET(int32_t));
		return;
	case UINT32:
		(void)printf(ofmt, width, CHK_INF127(GET(u_int32_t)));
		return;
	case SIGLIST:
		{
			sigset_t *s = (sigset_t *)(void *)bp;
			size_t i;
#define	SIGSETSIZE	(sizeof(s->__bits) / sizeof(s->__bits[0]))
			char buf[SIGSETSIZE * 8 + 1];

			for (i = 0; i < SIGSETSIZE; i++)
				(void)snprintf(&buf[i * 8], 9, "%.8x",
				    s->__bits[(SIGSETSIZE - 1) - i]);

			/* Skip leading zeroes */
			for (i = 0; buf[i] == '0'; i++)
				continue;

			if (buf[i] == '\0')
				i--;
			strprintorsetwidth(v, buf + i, mode);
#undef SIGSETSIZE
		}
		return;
	case INT64:
		(void)printf(ofmt, width, GET(int64_t));
		return;
	case UINT64:
		(void)printf(ofmt, width, CHK_INF127(GET(u_int64_t)));
		return;
	default:
		errx(1, "unknown type %d", v->type);
	}
#undef GET
#undef CHK_INF127
}

void
pvar(void *arg, VARENT *ve, int mode)
{
	VAR *v;

	v = ve->var;
	if (v->flag & UAREA && !((struct kinfo_proc2 *)arg)->p_uvalid) {
		if (mode == PRINTMODE)
			(void)printf("%*s", v->width, "-");
		return;
	}

	(void)printval((char *)arg + v->off, v, mode);
}

void
putimeval(void *arg, VARENT *ve, int mode)
{
	VAR *v = ve->var;
	struct kinfo_proc2 *k = arg;
	ulong secs = *(uint32_t *)((char *)arg + v->off);
	ulong usec = *(uint32_t *)((char *)arg + v->off + sizeof (uint32_t));
	int fmtlen;

	if (!k->p_uvalid) {
		if (mode == PRINTMODE)
			(void)printf("%*s", v->width, "-");
		return;
	}

	if (mode == WIDTHMODE) {
		if (secs == 0)
			/* non-zero so fmtlen is calculated at least once */
			secs = 1;
		if (secs > v->longestu) {
			v->longestu = secs;
			if (secs <= 999)
				/* sss.ssssss */
				fmtlen = iwidth(secs) + 6 + 1;
			else
				/* hh:mm:ss.ss */
				fmtlen = iwidth((secs + 1) / SECSPERHOUR)
					+ 2 + 1 + 2 + 1 + 2 + 1;
			if (fmtlen > v->width)
				v->width = fmtlen;
		}
		return;
	}

	if (secs < 999)
		(void)printf( "%*lu.%.6lu", v->width - 6 - 1, secs, usec);
	else {
		uint h, m;
		usec += 5000;
		if (usec >= 1000000) {
			usec -= 1000000;
			secs++;
		}
		m = secs / SECSPERMIN;
		secs -= m * SECSPERMIN;
		h = m / MINSPERHOUR;
		m -= h * MINSPERHOUR;
		(void)printf( "%*u:%.2u:%.2lu.%.2lu", v->width - 9, h, m, secs,
		    usec / 10000u );
	}
}

void
lname(void *arg, VARENT *ve, int mode)
{
	struct kinfo_lwp *l;
	VAR *v;

	l = arg;
	v = ve->var;
	if (l->l_name && l->l_name[0] != '\0') {
		strprintorsetwidth(v, l->l_name, mode);
		v->width = min(v->width, KI_LNAMELEN);
	} else {
		if (mode == PRINTMODE)
			(void)printf("%-*s", v->width, "-");
	}
}