sys/sys/libkern.h

   1 /*-
   2  * Copyright (c) 1992, 1993
   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  *      @(#)libkern.h   8.1 (Berkeley) 6/10/93
  34  * $FreeBSD: src/sys/sys/libkern.h,v 1.20.2.2 2001/09/30 21:12:54 luigi Exp $
  35  * $DragonFly: src/sys/sys/libkern.h,v 1.14 2007/06/01 00:24:25 dillon Exp $
  36  */
  37
  38 #ifndef _SYS_LIBKERN_H_
  39 #define _SYS_LIBKERN_H_
  40
  41 #if !defined(_KERNEL)
  42 #error "This file should not be included by userland programs."
  43 #else
  44
  45 /*
  46  * Hacks to prevent conflicts with standard header files
  47  */
  48 #ifndef _KERNEL_VIRTUAL
  49 #define _KERNEL_VIRTUAL
  50 #endif
  51
  52 #ifndef _SYS_CDEFS_H_
  53 #include <sys/cdefs.h>
  54 #endif
  55 #ifndef _SYS_TYPES_H_
  56 #include <sys/types.h>
  57 #endif
  58 #ifndef _SYS_SYSTM_H_
  59 #include <sys/systm.h>
  60 #endif
  61
  62 /* BCD conversions. */
  63 extern u_char const     bcd2bin_data[];
  64 extern u_char const     bin2bcd_data[];
  65 extern char const       hex2ascii_data[];
  66
  67 #define bcd2bin(bcd)    (bcd2bin_data[bcd])
  68 #define bin2bcd(bin)    (bin2bcd_data[bin])
  69 #define hex2ascii(hex)  (hex2ascii_data[hex])
  70
  71 static __inline int imax(int a, int b) { return (a > b ? a : b); }
  72 static __inline int imin(int a, int b) { return (a < b ? a : b); }
  73 static __inline long lmax(long a, long b) { return (a > b ? a : b); }
  74 static __inline long lmin(long a, long b) { return (a < b ? a : b); }
  75 static __inline u_int max(u_int a, u_int b) { return (a > b ? a : b); }
  76 static __inline u_int min(u_int a, u_int b) { return (a < b ? a : b); }
  77 static __inline quad_t qmax(quad_t a, quad_t b) { return (a > b ? a : b); }
  78 static __inline quad_t qmin(quad_t a, quad_t b) { return (a < b ? a : b); }
  79 static __inline u_long ulmax(u_long a, u_long b) { return (a > b ? a : b); }
  80 static __inline u_long ulmin(u_long a, u_long b) { return (a < b ? a : b); }
  81
  82 /* Prototypes for non-quad routines. */
  83 u_int32_t karc4random (void);
  84 int      bcmp (const void *, const void *, size_t);
  85 #ifndef HAVE_INLINE_FFS
  86 int      ffs (int);
  87 #endif
  88 #ifndef HAVE_INLINE_FLS
  89 int      fls (int);
  90 #endif
  91 #ifndef HAVE_INLINE_FLSL
  92 int      flsl(long);
  93 #endif
  94 int      locc (int, char *, u_int);
  95 void     kqsort (void *base, size_t nmemb, size_t size,
  96                     int (*compar)(const void *, const void *));
  97 u_long   krandom (void);
  98 char    *index (const char *, int);
  99 char    *rindex (const char *, int);
 100 int      scanc (u_int, const u_char *, const u_char *, int);
 101 int      skpc (int, int, char *);
 102 void     skrandom (u_long);
 103 char    *strcat (char * __restrict, const char * __restrict);
 104 int      strcmp (const char *, const char *);
 105 char    *strcpy (char * __restrict, const char * __restrict);
 106 size_t   strlcat (char *, const char *, size_t);
 107 size_t   strlcpy (char *, const char *, size_t);
 108 size_t   strlen (const char *);
 109 int      strncmp (const char *, const char *, size_t);
 110 char    *strncpy (char * __restrict, const char * __restrict, size_t);
 111 int     _kfnmatch(const char *, const char *, int, int);
 112
 113 /*
 114  * memset can't be an inline, it is used by gcc-4.x directly.
 115  */
 116 void    *memset(void *b, int c, size_t len);
 117
 118 static __inline int
 119 kfnmatch(const char *pattern, const char *string, int flags)
 120 {
 121         return(_kfnmatch(pattern, string, flags, 0));
 122 }
 123
 124 static __inline int
 125 memcmp(const void *b1, const void *b2, size_t len)
 126 {
 127         return (bcmp(b1, b2, len));
 128 }
 129
 130 /* kfnmatch() return values. */
 131 #define FNM_NOMATCH     1       /* Match failed. */
 132
 133 /* kfnmatch() flags. */
 134 #define FNM_NOESCAPE    0x01    /* Disable backslash escaping. */
 135 #define FNM_PATHNAME    0x02    /* Slash must be matched by slash. */
 136 #define FNM_PERIOD      0x04    /* Period must be matched by period. */
 137 #define FNM_LEADING_DIR 0x08    /* Ignore /<tail> after Imatch. */
 138 #define FNM_CASEFOLD    0x10    /* Case insensitive search. */
 139 #define FNM_IGNORECASE  FNM_CASEFOLD
 140 #define FNM_FILE_NAME   FNM_PATHNAME
 141
 142 #endif  /* _KERNEL */
 143 #endif  /* !_SYS_LIBKERN_H_ */