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. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  *      @(#)libkern.h   8.1 (Berkeley) 6/10/93
  30  * $FreeBSD: src/sys/sys/libkern.h,v 1.20.2.2 2001/09/30 21:12:54 luigi Exp $
  31  */
  32
  33 #ifndef _SYS_LIBKERN_H_
  34 #define _SYS_LIBKERN_H_
  35
  36 #if !defined(_KERNEL)
  37 #error "This file should not be included by userland programs."
  38 #else
  39
  40 /*
  41  * Hacks to prevent conflicts with standard header files
  42  */
  43
  44 #ifndef _SYS_CDEFS_H_
  45 #include <sys/cdefs.h>
  46 #endif
  47 #ifndef _SYS_TYPES_H_
  48 #include <sys/types.h>
  49 #endif
  50 #ifndef _SYS_SYSTM_H_
  51 #include <sys/systm.h>
  52 #endif
  53
  54 /* BCD conversions. */
  55 extern u_char const     bcd2bin_data[];
  56 extern u_char const     bin2bcd_data[];
  57 extern char const       hex2ascii_data[];
  58
  59 #define bcd2bin(bcd)    (bcd2bin_data[bcd])
  60 #define bin2bcd(bin)    (bin2bcd_data[bin])
  61 #define hex2ascii(hex)  (hex2ascii_data[hex])
  62
  63 /*
  64  * Number of bytes needed for hexadecimal representation
  65  * plus trailing \0
  66  */
  67 #define HEX_NCPYLEN(s)  (s * 3)
  68
  69 static __inline int imax(int a, int b) { return (a > b ? a : b); }
  70 static __inline int imin(int a, int b) { return (a < b ? a : b); }
  71 static __inline long lmax(long a, long b) { return (a > b ? a : b); }
  72 static __inline long lmin(long a, long b) { return (a < b ? a : b); }
  73 static __inline u_int umax(u_int a, u_int b) { return (a > b ? a : b); }
  74 static __inline u_int umin(u_int a, u_int 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 static __inline u_int64_t u64max(u_int64_t a, u_int64_t b) { return (a > b ? a : b); }
  82 static __inline u_int64_t u64min(u_int64_t a, u_int64_t b) { return (a < b ? a : b); }
  83 static __inline int64_t i64max(int64_t a, int64_t b) { return (a > b ? a : b); }
  84 static __inline int64_t i64min(int64_t a, int64_t b) { return (a < b ? a : b); }
  85 static __inline size_t szmax(size_t a, size_t b) { return (a > b ? a : b); }
  86 static __inline size_t szmin(size_t a, size_t b) { return (a < b ? a : b); }
  87
  88 static __inline int abs(int a) { return (a < 0 ? -a : a); }
  89 static __inline long labs(long a) { return (a < 0 ? -a : a); }
  90 static __inline quad_t qabs(quad_t a) { return (a < 0 ? -a : a); }
  91
  92 /* Prototypes for non-quad routines. */
  93 u_int32_t karc4random(void);
  94 void     karc4rand(void *, size_t);
  95 int      bcmp(const void *, const void *, size_t);
  96 void    *kbsearch(const void *, const void *, size_t,
  97                      size_t, int (*)(const void *, const void *));
  98 #ifndef HAVE_INLINE_FFS
  99 int      ffs(int);
 100 #endif
 101 #ifndef HAVE_INLINE_FFSL
 102 int      ffsl(long);
 103 #endif
 104 #ifndef HAVE_INLINE_FLS
 105 int      fls(int);
 106 #endif
 107 #ifndef HAVE_INLINE_FLSL
 108 int      flsl(long);
 109 #endif
 110 #ifndef HAVE_INLINE_FLSLL
 111 int      flsll(long long);
 112 #endif
 113 void     kqsort(void *base, size_t nmemb, size_t size,
 114                     int (*compar)(const void *, const void *));
 115 void     kqsort_r(void *base, size_t nmemb, size_t size, void *thunk,
 116                     int (*compar)(void *, const void *, const void *));
 117 u_long   krandom(void);
 118 char    *index(const char *, int);
 119 char    *rindex(const char *, int);
 120 int      scanc(u_int, const u_char *, const u_char *, int);
 121 int      skpc(int, int, char *);
 122 void     skrandom(u_long);
 123 char    *strcat(char * __restrict, const char * __restrict);
 124 char    *strncat(char * __restrict, const char * __restrict, size_t);
 125 int      strcmp(const char *, const char *);
 126 int      strcasecmp(const char *, const char *);
 127 char    *strcpy(char * __restrict, const char * __restrict);
 128 size_t   strlcat(char *, const char *, size_t);
 129 size_t   strlcpy(char *, const char *, size_t);
 130 size_t   strlen(const char *);
 131 int      strncmp(const char *, const char *, size_t);
 132 int      strncasecmp(const char *, const char *, size_t);
 133 char    *strncpy(char * __restrict, const char * __restrict, size_t);
 134 size_t   strnlen(const char *, size_t);
 135 char    *strsep(char **, const char *);
 136 char    *strstr(const char *, const char *);
 137 int      _kfnmatch(const char *, const char *, int, int);
 138 void    *memcchr(const void *, int, size_t);
 139 char    *hexncpy(const u_char *, int, char *, int, const char *);
 140
 141 /*
 142  * memset can't be an inline, it is used by gcc-4.x directly.
 143  */
 144 void    *memset(void *, int, size_t);
 145 void    *memmove(void *, const void *, size_t);
 146
 147
 148 static __inline int
 149 kfnmatch(const char *pattern, const char *string, int flags)
 150 {
 151         return(_kfnmatch(pattern, string, flags, 0));
 152 }
 153
 154 static __inline int
 155 memcmp(const void *b1, const void *b2, size_t len)
 156 {
 157         return (bcmp(b1, b2, len));
 158 }
 159
 160 static __inline char *
 161 strchr(const char *p, int ch)
 162 {
 163         return (index(p, ch));
 164 }
 165
 166 static __inline char *
 167 strrchr(const char *p, int ch)
 168 {
 169         return (rindex(p, ch));
 170 }
 171
 172 /* kfnmatch() return values. */
 173 #define FNM_NOMATCH     1       /* Match failed. */
 174
 175 /* kfnmatch() flags. */
 176 #define FNM_NOESCAPE    0x01    /* Disable backslash escaping. */
 177 #define FNM_PATHNAME    0x02    /* Slash must be matched by slash. */
 178 #define FNM_PERIOD      0x04    /* Period must be matched by period. */
 179 #define FNM_LEADING_DIR 0x08    /* Ignore /<tail> after Imatch. */
 180 #define FNM_CASEFOLD    0x10    /* Case insensitive search. */
 181 #define FNM_IGNORECASE  FNM_CASEFOLD
 182 #define FNM_FILE_NAME   FNM_PATHNAME
 183
 184 #endif  /* _KERNEL */
 185 #endif  /* !_SYS_LIBKERN_H_ */