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 1.16 2007/11/18 17:53:02 pavalos 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
  49 #ifndef _SYS_CDEFS_H_
  50 #include <sys/cdefs.h>
  51 #endif
  52 #ifndef _SYS_TYPES_H_
  53 #include <sys/types.h>
  54 #endif
  55 #ifndef _SYS_SYSTM_H_
  56 #include <sys/systm.h>
  57 #endif
  58
  59 /* BCD conversions. */
  60 extern u_char const     bcd2bin_data[];
  61 extern u_char const     bin2bcd_data[];
  62 extern char const       hex2ascii_data[];
  63
  64 #define bcd2bin(bcd)    (bcd2bin_data[bcd])
  65 #define bin2bcd(bin)    (bin2bcd_data[bin])
  66 #define hex2ascii(hex)  (hex2ascii_data[hex])
  67
  68 static __inline int imax(int a, int b) { return (a > b ? a : b); }
  69 static __inline int imin(int a, int b) { return (a < b ? a : b); }
  70 static __inline long lmax(long a, long b) { return (a > b ? a : b); }
  71 static __inline long lmin(long a, long b) { return (a < b ? a : b); }
  72 static __inline u_int max(u_int a, u_int b) { return (a > b ? a : b); }
  73 static __inline u_int min(u_int a, u_int b) { return (a < b ? a : b); }
  74 static __inline quad_t qmax(quad_t a, quad_t b) { return (a > b ? a : b); }
  75 static __inline quad_t qmin(quad_t a, quad_t b) { return (a < b ? a : b); }
  76 static __inline u_long ulmax(u_long a, u_long b) { return (a > b ? a : b); }
  77 static __inline u_long ulmin(u_long a, u_long b) { return (a < b ? a : b); }
  78
  79 /* Prototypes for non-quad routines. */
  80 u_int32_t karc4random (void);
  81 int      bcmp (const void *, const void *, size_t);
  82 void    *bsearch (const void *, const void *, size_t,
  83                      size_t, int (*)(const void *, const void *));
  84 #ifndef HAVE_INLINE_FFS
  85 int      ffs (int);
  86 #endif
  87 #ifndef HAVE_INLINE_FLS
  88 int      fls (int);
  89 #endif
  90 #ifndef HAVE_INLINE_FLSL
  91 int      flsl(long);
  92 #endif
  93 int      locc (int, char *, u_int);
  94 void     kqsort (void *base, size_t nmemb, size_t size,
  95                     int (*compar)(const void *, const void *));
  96 u_long   krandom (void);
  97 char    *index (const char *, int);
  98 char    *rindex (const char *, int);
  99 int      scanc (u_int, const u_char *, const u_char *, int);
 100 int      skpc (int, int, char *);
 101 void     skrandom (u_long);
 102 char    *strcat (char * __restrict, const char * __restrict);
 103 int      strcmp (const char *, const char *);
 104 char    *strcpy (char * __restrict, const char * __restrict);
 105 size_t   strlcat (char *, const char *, size_t);
 106 size_t   strlcpy (char *, const char *, size_t);
 107 size_t   strlen (const char *);
 108 int      strncmp (const char *, const char *, size_t);
 109 char    *strncpy (char * __restrict, const char * __restrict, size_t);
 110 int     _kfnmatch(const char *, const char *, int, int);
 111
 112 /*
 113  * memset can't be an inline, it is used by gcc-4.x directly.
 114  */
 115 void    *memset(void *b, int c, size_t len);
 116
 117 static __inline int
 118 kfnmatch(const char *pattern, const char *string, int flags)
 119 {
 120         return(_kfnmatch(pattern, string, flags, 0));
 121 }
 122
 123 static __inline int
 124 memcmp(const void *b1, const void *b2, size_t len)
 125 {
 126         return (bcmp(b1, b2, len));
 127 }
 128
 129 /* kfnmatch() return values. */
 130 #define FNM_NOMATCH     1       /* Match failed. */
 131
 132 /* kfnmatch() flags. */
 133 #define FNM_NOESCAPE    0x01    /* Disable backslash escaping. */
 134 #define FNM_PATHNAME    0x02    /* Slash must be matched by slash. */
 135 #define FNM_PERIOD      0x04    /* Period must be matched by period. */
 136 #define FNM_LEADING_DIR 0x08    /* Ignore /<tail> after Imatch. */
 137 #define FNM_CASEFOLD    0x10    /* Case insensitive search. */
 138 #define FNM_IGNORECASE  FNM_CASEFOLD
 139 #define FNM_FILE_NAME   FNM_PATHNAME
 140
 141 #endif  /* _KERNEL */
 142 #endif  /* !_SYS_LIBKERN_H_ */