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 #endif 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 uint32_t karc4random(void); 94 uint64_t karc4random64(void); 95 void karc4rand(void *, size_t); 96 void arc4_init_pcpu(int cpuid); 97 int bcmp(const void *, const void *, size_t); 98 int timingsafe_bcmp(const void *, const void *, size_t); 99 void *kbsearch(const void *, const void *, size_t, 100 size_t, int (*)(const void *, const void *)); 101 #ifndef HAVE_INLINE_FFS 102 int ffs(int); 103 #endif 104 #ifndef HAVE_INLINE_FFSL 105 int ffsl(long); 106 #endif 107 #ifndef HAVE_INLINE_FLS 108 int fls(int); 109 #endif 110 #ifndef HAVE_INLINE_FLSL 111 int flsl(long); 112 #endif 113 #ifndef HAVE_INLINE_FLSLL 114 int flsll(long long); 115 #endif 116 void kqsort(void *base, size_t nmemb, size_t size, 117 int (*compar)(const void *, const void *)); 118 void kqsort_r(void *base, size_t nmemb, size_t size, void *thunk, 119 int (*compar)(void *, const void *, const void *)); 120 u_long krandom(void); 121 char *index(const char *, int); 122 char *rindex(const char *, int); 123 int scanc(u_int, const u_char *, const u_char *, int); 124 int skpc(int, int, char *); 125 void skrandom(u_long); 126 char *strcat(char * __restrict, const char * __restrict); 127 char *strncat(char * __restrict, const char * __restrict, size_t); 128 int strcmp(const char *, const char *); 129 int strcasecmp(const char *, const char *); 130 char *strcpy(char * __restrict, const char * __restrict); 131 size_t strlcat(char *, const char *, size_t); 132 size_t strlcpy(char *, const char *, size_t); 133 size_t strlen(const char *); 134 int strncmp(const char *, const char *, size_t); 135 int strncasecmp(const char *, const char *, size_t); 136 char *strncpy(char * __restrict, const char * __restrict, size_t); 137 size_t strnlen(const char *, size_t); 138 char *strsep(char **, const char *); 139 char *strstr(const char *, const char *); 140 int _kfnmatch(const char *, const char *, int, int); 141 void *memcchr(const void *, int, size_t); 142 char *hexncpy(const u_char *, int, char *, int, const char *); 143 144 /* 145 * memset can't be an inline, it is used by gcc-4.x directly. 146 */ 147 /*void *memset(void *, int, size_t);*/ 148 /*void *memmove(void *, const void *, size_t);*/ 149 150 151 static __inline int 152 kfnmatch(const char *pattern, const char *string, int flags) 153 { 154 return(_kfnmatch(pattern, string, flags, 0)); 155 } 156 157 static __inline int 158 memcmp(const void *b1, const void *b2, size_t len) 159 { 160 return (bcmp(b1, b2, len)); 161 } 162 163 static __inline char * 164 strchr(const char *p, int ch) 165 { 166 return (index(p, ch)); 167 } 168 169 static __inline char * 170 strrchr(const char *p, int ch) 171 { 172 return (rindex(p, ch)); 173 } 174 175 /* kfnmatch() return values. */ 176 #define FNM_NOMATCH 1 /* Match failed. */ 177 178 /* kfnmatch() flags. */ 179 #define FNM_NOESCAPE 0x01 /* Disable backslash escaping. */ 180 #define FNM_PATHNAME 0x02 /* Slash must be matched by slash. */ 181 #define FNM_PERIOD 0x04 /* Period must be matched by period. */ 182 #define FNM_LEADING_DIR 0x08 /* Ignore /<tail> after Imatch. */ 183 #define FNM_CASEFOLD 0x10 /* Case insensitive search. */ 184 #define FNM_IGNORECASE FNM_CASEFOLD 185 #define FNM_FILE_NAME FNM_PATHNAME 186 187 #endif /* !_SYS_LIBKERN_H_ */ 188