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  */
  36
  37 #ifndef _SYS_LIBKERN_H_
  38 #define _SYS_LIBKERN_H_
  39
  40 #if !defined(_KERNEL)
  41 #error "This file should not be included by userland programs."
  42 #else
  43
  44 /*
  45  * Hacks to prevent conflicts with standard header files
  46  */
  47
  48 #ifndef _SYS_CDEFS_H_
  49 #include <sys/cdefs.h>
  50 #endif
  51 #ifndef _SYS_TYPES_H_
  52 #include <sys/types.h>
  53 #endif
  54 #ifndef _SYS_SYSTM_H_
  55 #include <sys/systm.h>
  56 #endif
  57
  58 /* BCD conversions. */
  59 extern u_char const     bcd2bin_data[];
  60 extern u_char const     bin2bcd_data[];
  61 extern char const       hex2ascii_data[];
  62
  63 #define bcd2bin(bcd)    (bcd2bin_data[bcd])
  64 #define bin2bcd(bin)    (bin2bcd_data[bin])
  65 #define hex2ascii(hex)  (hex2ascii_data[hex])
  66
  67 /*
  68  * Number of bytes needed for hexadecimal representation
  69  * plus trailing \0
  70  */
  71 #define HEX_NCPYLEN(s) (s * 3)
  72
  73 static __inline int imax(int a, int b) { return (a > b ? a : b); }
  74 static __inline int imin(int a, int b) { return (a < b ? a : b); }
  75 static __inline long lmax(long a, long b) { return (a > b ? a : b); }
  76 static __inline long lmin(long a, long b) { return (a < b ? a : b); }
  77 static __inline u_int umax(u_int a, u_int b) { return (a > b ? a : b); }
  78 static __inline u_int umin(u_int a, u_int b) { return (a < b ? a : b); }
  79 static __inline u_int max(u_int a, u_int b) { return (a > b ? a : b); }
  80 static __inline u_int min(u_int a, u_int b) { return (a < b ? a : b); }
  81 static __inline quad_t qmax(quad_t a, quad_t b) { return (a > b ? a : b); }
  82 static __inline quad_t qmin(quad_t a, quad_t b) { return (a < b ? a : b); }
  83 static __inline u_long ulmax(u_long a, u_long b) { return (a > b ? a : b); }
  84 static __inline u_long ulmin(u_long a, u_long b) { return (a < b ? a : b); }
  85 static __inline u_int64_t u64max(u_int64_t a, u_int64_t b) { return (a > b ? a : b); }
  86 static __inline u_int64_t u64min(u_int64_t a, u_int64_t b) { return (a < b ? a : b); }
  87 static __inline int64_t i64max(int64_t a, int64_t b) { return (a > b ? a : b); }
  88 static __inline int64_t i64min(int64_t a, int64_t b) { return (a < b ? a : b); }
  89 static __inline size_t szmax(size_t a, size_t b) { return (a > b ? a : b); }
  90 static __inline size_t szmin(size_t a, size_t b) { return (a < b ? a : b); }
  91
  92 static __inline int abs(int a) { return (a < 0 ? -a : a); }
  93 static __inline long labs(long a) { return (a < 0 ? -a : a); }
  94 static __inline quad_t qabs(quad_t a) { return (a < 0 ? -a : a); }
  95
  96 /* Prototypes for non-quad routines. */
  97 u_int32_t karc4random (void);
  98 void    karc4rand (void *, size_t);
  99 int      bcmp (const void *, const void *, size_t);
 100 void    *kbsearch (const void *, const void *, size_t,
 101                      size_t, int (*)(const void *, const void *));
 102 #ifndef HAVE_INLINE_FFS
 103 int      ffs (int);
 104 #endif
 105 #ifndef HAVE_INLINE_FFSL
 106 int      ffsl (long);
 107 #endif
 108 #ifndef HAVE_INLINE_FLS
 109 int      fls (int);
 110 #endif
 111 #ifndef HAVE_INLINE_FLSL
 112 int      flsl(long);
 113 #endif
 114 void     kqsort (void *base, size_t nmemb, size_t size,
 115                     int (*compar)(const void *, const void *));
 116 void     kqsort_r(void *base, size_t nmemb, size_t size, void *thunk,
 117                     int (*compar)(void *, const void *, const void *));
 118 u_long   krandom (void);
 119 char    *index (const char *, int);
 120 char    *rindex (const char *, int);
 121 int      scanc (u_int, const u_char *, const u_char *, int);
 122 int      skpc (int, int, char *);
 123 void     skrandom (u_long);
 124 char    *strcat (char * __restrict, const char * __restrict);
 125 char    *strncat(char * __restrict, const char * __restrict, size_t);
 126 int      strcmp (const char *, const char *);
 127 int      strcasecmp (const char *, const char *);
 128 char    *strcpy (char * __restrict, const char * __restrict);
 129 size_t   strlcat (char *, const char *, size_t);
 130 size_t   strlcpy (char *, const char *, size_t);
 131 size_t   strlen (const char *);
 132 int      strncmp (const char *, const char *, size_t);
 133 int      strncasecmp (const char *, const char *, size_t);
 134 char    *strncpy (char * __restrict, const char * __restrict, size_t);
 135 size_t   strnlen(const char *, size_t);
 136 char    *strsep(char **, const char *);
 137 char    *strstr(const char *, const char *);
 138 int     _kfnmatch(const char *, const char *, int, int);
 139 void *  memcchr(const void *, int, size_t);
 140 char *  hexncpy(const u_char *, int, char *, int, const char *);
 141
 142 /*
 143  * memset can't be an inline, it is used by gcc-4.x directly.
 144  */
 145 void    *memset(void *b, int c, size_t len);
 146 void    *memmove(void *s1, const void *s2, size_t n);
 147
 148
 149 static __inline int
 150 kfnmatch(const char *pattern, const char *string, int flags)
 151 {
 152         return(_kfnmatch(pattern, string, flags, 0));
 153 }
 154
 155 static __inline int
 156 memcmp(const void *b1, const void *b2, size_t len)
 157 {
 158         return (bcmp(b1, b2, len));
 159 }
 160
 161 static __inline char *
 162 strchr(const char *p, int ch)
 163 {
 164         return (index(p, ch));
 165 }
 166
 167 static __inline char *
 168 strrchr(const char *p, int ch)
 169 {
 170         return (rindex(p, ch));
 171 }
 172
 173 /* kfnmatch() return values. */
 174 #define FNM_NOMATCH     1       /* Match failed. */
 175
 176 /* kfnmatch() flags. */
 177 #define FNM_NOESCAPE    0x01    /* Disable backslash escaping. */
 178 #define FNM_PATHNAME    0x02    /* Slash must be matched by slash. */
 179 #define FNM_PERIOD      0x04    /* Period must be matched by period. */
 180 #define FNM_LEADING_DIR 0x08    /* Ignore /<tail> after Imatch. */
 181 #define FNM_CASEFOLD    0x10    /* Case insensitive search. */
 182 #define FNM_IGNORECASE  FNM_CASEFOLD
 183 #define FNM_FILE_NAME   FNM_PATHNAME
 184
 185 #endif  /* _KERNEL */
 186 #endif  /* !_SYS_LIBKERN_H_ */