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01: /* Copyright (C) 1995-1997,2000,2001,2003,2008,2011
02:    Free Software Foundation, Inc.
03:    This file is part of the GNU C Library.
04: 
05:    The GNU C Library is free software; you can redistribute it and/or
06:    modify it under the terms of the GNU Lesser General Public
07:    License as published by the Free Software Foundation; either
08:    version 2.1 of the License, or (at your option) any later version.
09: 
10:    The GNU C Library is distributed in the hope that it will be useful,
11:    but WITHOUT ANY WARRANTY; without even the implied warranty of
12:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13:    Lesser General Public License for more details.
14: 
15:    You should have received a copy of the GNU Lesser General Public
16:    License along with the GNU C Library; if not, write to the Free
17:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18:    02111-1307 USA.  */
19: 
20: #ifndef _SYS_PARAM_H
21: #define _SYS_PARAM_H    1
22: 
23: #ifndef ARG_MAX
24: # define __undef_ARG_MAX
25: #endif
26: 
27: #include <limits.h>
28: #include <linux/limits.h>
29: #include <linux/param.h>
30: 
31: /* The kernel headers defines ARG_MAX.  The value is wrong, though.  */
32: #ifdef __undef_ARG_MAX
33: # undef ARG_MAX
34: # undef __undef_ARG_MAX
35: #endif
36: 
37: /* BSD names for some <limits.h> values.  */
38: 
39: #define NBBY            CHAR_BIT
40: #ifndef NGROUPS
41: # define NGROUPS        NGROUPS_MAX
42: #endif
43: #define MAXSYMLINKS     20
44: #define CANBSIZ         MAX_CANON
45: #define MAXPATHLEN      PATH_MAX
46: /* The following are not really correct but it is a value we used for a
47:    long time and which seems to be usable.  People should not use NOFILE
48:    and NCARGS anyway.  */
49: #define NOFILE          256
50: #define NCARGS          131072
51: 
52: 
53: #include <sys/types.h>
54: 
55: /* Bit map related macros.  */
56: #define setbit(a,i)     ((a)[(i)/NBBY] |= 1<<((i)%NBBY))
57: #define clrbit(a,i)     ((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))
58: #define isset(a,i)      ((a)[(i)/NBBY] & (1<<((i)%NBBY)))
59: #define isclr(a,i)      (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
60: 
61: /* Macros for counting and rounding.  */
62: #ifndef howmany
63: # define howmany(x, y)  (((x) + ((y) - 1)) / (y))
64: #endif
65: #ifdef __GNUC__
66: # define roundup(x, y)  (__builtin_constant_p (y) && powerof2 (y)             \
67:                          ? (((x) + (y) - 1) & ~((y) - 1))                     \
68:                          : ((((x) + ((y) - 1)) / (y)) * (y)))
69: #else
70: # define roundup(x, y)  ((((x) + ((y) - 1)) / (y)) * (y))
71: #endif
72: #define powerof2(x)     ((((x) - 1) & (x)) == 0)
73: 
74: /* Macros for min/max.  */
75: #define MIN(a,b) (((a)<(b))?(a):(b))
76: #define MAX(a,b) (((a)>(b))?(a):(b))
77: 
78: 
79: /* Unit of `st_blocks'.  */
80: #define DEV_BSIZE       512
81: 
82: 
83: #endif  /* sys/param.h */
84: 

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