1/* Copyright (C) 1995,1996,1997,2000,2001,2003 Free Software Foundation, Inc.
2   This file is part of the GNU C Library.
3
4   The GNU C Library is free software; you can redistribute it and/or
5   modify it under the terms of the GNU Lesser General Public
6   License as published by the Free Software Foundation; either
7   version 2.1 of the License, or (at your option) any later version.
8
9   The GNU C Library is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12   Lesser General Public License for more details.
13
14   You should have received a copy of the GNU Lesser General Public
15   License along with the GNU C Library; if not, write to the Free
16   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17   02111-1307 USA.  */
18
19#ifndef _SYS_PARAM_H
20#define _SYS_PARAM_H	1
21
22#include <limits.h>
23#include <linux/limits.h>
24#include <linux/param.h>
25
26/* BSD names for some <limits.h> values.  */
27
28#define	NBBY		CHAR_BIT
29#ifndef	NGROUPS
30# define NGROUPS	NGROUPS_MAX
31#endif
32#define	MAXSYMLINKS	20
33#define	CANBSIZ		MAX_CANON
34#define	NCARGS		ARG_MAX
35#define MAXPATHLEN	PATH_MAX
36/* The following is not really correct but it is a value we used for a
37   long time and which seems to be usable.  People should not use NOFILE
38   anyway.  */
39#define NOFILE		256
40
41
42#include <sys/types.h>
43
44/* Bit map related macros.  */
45#define	setbit(a,i)	((a)[(i)/NBBY] |= 1<<((i)%NBBY))
46#define	clrbit(a,i)	((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))
47#define	isset(a,i)	((a)[(i)/NBBY] & (1<<((i)%NBBY)))
48#define	isclr(a,i)	(((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
49
50/* Macros for counting and rounding.  */
51#ifndef howmany
52# define howmany(x, y)	(((x) + ((y) - 1)) / (y))
53#endif
54#ifdef __GNUC__
55# define roundup(x, y)	(__builtin_constant_p (y) && powerof2 (y)	      \
56			 ? (((x) + (y) - 1) & ~((y) - 1))		      \
57			 : ((((x) + ((y) - 1)) / (y)) * (y)))
58#else
59# define roundup(x, y)	((((x) + ((y) - 1)) / (y)) * (y))
60#endif
61#define powerof2(x)	((((x) - 1) & (x)) == 0)
62
63/* Macros for min/max.  */
64#define	MIN(a,b) (((a)<(b))?(a):(b))
65#define	MAX(a,b) (((a)>(b))?(a):(b))
66
67
68/* Unit of `st_blocks'.  */
69#define DEV_BSIZE       512
70
71
72#endif	/* sys/param.h */
73