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 /* 69 * Number of bytes needed for hexadecimal representation 70 * plus trailing \0 71 */ 72 #define HEX_NCPYLEN(s) (s * 3) 73 74 static __inline int imax(int a, int b) { return (a > b ? a : b); } 75 static __inline int imin(int a, int b) { return (a < b ? a : b); } 76 static __inline long lmax(long a, long b) { return (a > b ? a : b); } 77 static __inline long lmin(long a, long b) { return (a < b ? a : b); } 78 static __inline u_int umax(u_int a, u_int b) { return (a > b ? a : b); } 79 static __inline u_int umin(u_int a, u_int b) { return (a < b ? a : b); } 80 static __inline u_int max(u_int a, u_int b) { return (a > b ? a : b); } 81 static __inline u_int min(u_int a, u_int b) { return (a < b ? a : b); } 82 static __inline quad_t qmax(quad_t a, quad_t b) { return (a > b ? a : b); } 83 static __inline quad_t qmin(quad_t a, quad_t b) { return (a < b ? a : b); } 84 static __inline u_long ulmax(u_long a, u_long b) { return (a > b ? a : b); } 85 static __inline u_long ulmin(u_long a, u_long b) { return (a < b ? a : b); } 86 static __inline u_int64_t u64max(u_int64_t a, u_int64_t b) { return (a > b ? a : b); } 87 static __inline u_int64_t u64min(u_int64_t a, u_int64_t b) { return (a < b ? a : b); } 88 static __inline int64_t i64max(int64_t a, int64_t b) { return (a > b ? a : b); } 89 static __inline int64_t i64min(int64_t a, int64_t b) { return (a < b ? a : b); } 90 static __inline size_t szmax(size_t a, size_t b) { return (a > b ? a : b); } 91 static __inline size_t szmin(size_t a, size_t b) { return (a < b ? a : b); } 92 93 static __inline int abs(int a) { return (a < 0 ? -a : a); } 94 static __inline long labs(long a) { return (a < 0 ? -a : a); } 95 static __inline quad_t qabs(quad_t a) { return (a < 0 ? -a : a); } 96 97 /* Prototypes for non-quad routines. */ 98 u_int32_t karc4random (void); 99 void karc4rand (void *, size_t); 100 int bcmp (const void *, const void *, size_t); 101 void *kbsearch (const void *, const void *, size_t, 102 size_t, int (*)(const void *, const void *)); 103 #ifndef HAVE_INLINE_FFS 104 int ffs (int); 105 #endif 106 #ifndef HAVE_INLINE_FLS 107 int fls (int); 108 #endif 109 #ifndef HAVE_INLINE_FLSL 110 int flsl(long); 111 #endif 112 int locc (int, char *, u_int); 113 void kqsort (void *base, size_t nmemb, size_t size, 114 int (*compar)(const void *, const void *)); 115 u_long krandom (void); 116 char *index (const char *, int); 117 char *rindex (const char *, int); 118 int scanc (u_int, const u_char *, const u_char *, int); 119 int skpc (int, int, char *); 120 void skrandom (u_long); 121 char *strcat (char * __restrict, const char * __restrict); 122 int strcmp (const char *, const char *); 123 int strcasecmp (const char *, const char *); 124 char *strcpy (char * __restrict, const char * __restrict); 125 size_t strlcat (char *, const char *, size_t); 126 size_t strlcpy (char *, const char *, size_t); 127 size_t strlen (const char *); 128 int strncmp (const char *, const char *, size_t); 129 int strncasecmp (const char *, const char *, size_t); 130 char *strncpy (char * __restrict, const char * __restrict, size_t); 131 char *strsep(char **, const char *); 132 int _kfnmatch(const char *, const char *, int, int); 133 void * memcchr(const void *, int, size_t); 134 char * hexncpy(const u_char *, int, char *, int, const char *); 135 136 /* 137 * memset can't be an inline, it is used by gcc-4.x directly. 138 */ 139 void *memset(void *b, int c, size_t len); 140 void *memmove(void *s1, const void *s2, size_t n); 141 142 143 static __inline int 144 kfnmatch(const char *pattern, const char *string, int flags) 145 { 146 return(_kfnmatch(pattern, string, flags, 0)); 147 } 148 149 static __inline int 150 memcmp(const void *b1, const void *b2, size_t len) 151 { 152 return (bcmp(b1, b2, len)); 153 } 154 155 static __inline char * 156 strchr(const char *p, int ch) 157 { 158 return (index(p, ch)); 159 } 160 161 static __inline char * 162 strrchr(const char *p, int ch) 163 { 164 return (rindex(p, ch)); 165 } 166 167 /* kfnmatch() return values. */ 168 #define FNM_NOMATCH 1 /* Match failed. */ 169 170 /* kfnmatch() flags. */ 171 #define FNM_NOESCAPE 0x01 /* Disable backslash escaping. */ 172 #define FNM_PATHNAME 0x02 /* Slash must be matched by slash. */ 173 #define FNM_PERIOD 0x04 /* Period must be matched by period. */ 174 #define FNM_LEADING_DIR 0x08 /* Ignore /<tail> after Imatch. */ 175 #define FNM_CASEFOLD 0x10 /* Case insensitive search. */ 176 #define FNM_IGNORECASE FNM_CASEFOLD 177 #define FNM_FILE_NAME FNM_PATHNAME 178 179 #endif /* _KERNEL */ 180 #endif /* !_SYS_LIBKERN_H_ */ 181