nlist.c revision 110391 
1/*-
2 * Copyright (c) 1990, 1993, 1994
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#if 0
35#ifndef lint
36static char sccsid[] = "@(#)nlist.c	8.4 (Berkeley) 4/2/94";
37#endif /* not lint */
38#endif
39
40#include <sys/cdefs.h>
41__FBSDID("$FreeBSD: head/bin/ps/nlist.c 110391 2003-02-05 13:18:17Z charnier $");
42
43#include <sys/types.h>
44#include <sys/sysctl.h>
45
46#include <stddef.h>
47
48#include "ps.h"
49
50fixpt_t	ccpu;				/* kernel _ccpu variable */
51int	nlistread;			/* if nlist already read. */
52unsigned long	mempages;		/* number of pages of phys. memory */
53int	fscale;				/* kernel _fscale variable */
54
55int
56donlist(void)
57{
58	size_t oldlen;
59
60	oldlen = sizeof(ccpu);
61	if (sysctlbyname("kern.ccpu", &ccpu, &oldlen, NULL, 0) == -1)
62		return (1);
63	oldlen = sizeof(fscale);
64	if (sysctlbyname("kern.fscale", &fscale, &oldlen, NULL, 0) == -1)
65		return (1);
66	oldlen = sizeof(mempages);
67	if (sysctlbyname("hw.availpages", &mempages, &oldlen, NULL, 0) == -1)
68		return (1);
69	nlistread = 1;
70	return (0);
71}
72