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 * 4. 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 * $FreeBSD$ 31 */ 32 33 #ifndef _SYS_LIBKERN_H_ 34 #define _SYS_LIBKERN_H_ 35 36 #include <sys/cdefs.h> 37 #include <sys/types.h> 38 #ifdef _KERNEL 39 #include <sys/systm.h> 40 #endif 41 42 #ifndef LIBKERN_INLINE 43 #define LIBKERN_INLINE static __inline 44 #define LIBKERN_BODY 45 #endif 46 47 /* BCD conversions. */ 48 extern u_char const bcd2bin_data[]; 49 extern u_char const bin2bcd_data[]; 50 extern char const hex2ascii_data[]; 51 52 #define bcd2bin(bcd) (bcd2bin_data[bcd]) 53 #define bin2bcd(bin) (bin2bcd_data[bin]) 54 #define hex2ascii(hex) (hex2ascii_data[hex]) 55 56 static __inline int imax(int a, int b) { return (a > b ? a : b); } 57 static __inline int imin(int a, int b) { return (a < b ? a : b); } 58 static __inline long lmax(long a, long b) { return (a > b ? a : b); } 59 static __inline long lmin(long a, long b) { return (a < b ? a : b); } 60 static __inline u_int max(u_int a, u_int b) { return (a > b ? a : b); } 61 static __inline u_int min(u_int a, u_int b) { return (a < b ? a : b); } 62 static __inline quad_t qmax(quad_t a, quad_t b) { return (a > b ? a : b); } 63 static __inline quad_t qmin(quad_t a, quad_t b) { return (a < b ? a : b); } 64 static __inline u_quad_t uqmax(u_quad_t a, u_quad_t b) { return (a > b ? a : b); } 65 static __inline u_quad_t uqmin(u_quad_t a, u_quad_t b) { return (a < b ? a : b); } 66 static __inline u_long ulmax(u_long a, u_long b) { return (a > b ? a : b); } 67 static __inline u_long ulmin(u_long a, u_long b) { return (a < b ? a : b); } 68 static __inline __uintmax_t ummax(__uintmax_t a, __uintmax_t b) 69 { 70 71 return (a > b ? a : b); 72 } 73 static __inline __uintmax_t ummin(__uintmax_t a, __uintmax_t b) 74 { 75 76 return (a < b ? a : b); 77 } 78 static __inline off_t omax(off_t a, off_t b) { return (a > b ? a : b); } 79 static __inline off_t omin(off_t a, off_t b) { return (a < b ? a : b); } 80 81 static __inline int abs(int a) { return (a < 0 ? -a : a); } 82 static __inline long labs(long a) { return (a < 0 ? -a : a); } 83 static __inline quad_t qabs(quad_t a) { return (a < 0 ? -a : a); } 84 85 #define ARC4_ENTR_NONE 0 /* Don't have entropy yet. */ 86 #define ARC4_ENTR_HAVE 1 /* Have entropy. */ 87 #define ARC4_ENTR_SEED 2 /* Reseeding. */ 88 extern int arc4rand_iniseed_state; 89 90 /* Prototypes for non-quad routines. */ 91 struct malloc_type; 92 uint32_t arc4random(void); 93 void arc4rand(void *ptr, u_int len, int reseed); 94 int bcmp(const void *, const void *, size_t); 95 int timingsafe_bcmp(const void *, const void *, size_t); 96 void *bsearch(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_FFSLL 105 int ffsll(long 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 #define bitcount64(x) __bitcount64((uint64_t)(x)) 117 #define bitcount32(x) __bitcount32((uint32_t)(x)) 118 #define bitcount16(x) __bitcount16((uint16_t)(x)) 119 #define bitcountl(x) __bitcountl((u_long)(x)) 120 #define bitcount(x) __bitcount((u_int)(x)) 121 122 int fnmatch(const char *, const char *, int); 123 int locc(int, char *, u_int); 124 void *memchr(const void *s, int c, size_t n); 125 void *memcchr(const void *s, int c, size_t n); 126 int memcmp(const void *b1, const void *b2, size_t len); 127 void *memmem(const void *l, size_t l_len, const void *s, size_t s_len); 128 void qsort(void *base, size_t nmemb, size_t size, 129 int (*compar)(const void *, const void *)); 130 void qsort_r(void *base, size_t nmemb, size_t size, void *thunk, 131 int (*compar)(void *, const void *, const void *)); 132 u_long random(void); 133 int scanc(u_int, const u_char *, const u_char *, int); 134 void srandom(u_long); 135 int strcasecmp(const char *, const char *); 136 char *strcat(char * __restrict, const char * __restrict); 137 char *strchr(const char *, int); 138 int strcmp(const char *, const char *); 139 char *strcpy(char * __restrict, const char * __restrict); 140 size_t strcspn(const char * __restrict, const char * __restrict) __pure; 141 char *strdup(const char *__restrict, struct malloc_type *); 142 char *strncat(char *, const char *, size_t); 143 char *strndup(const char *__restrict, size_t, struct malloc_type *); 144 size_t strlcat(char *, const char *, size_t); 145 size_t strlcpy(char *, const char *, size_t); 146 size_t strlen(const char *); 147 int strncasecmp(const char *, const char *, size_t); 148 int strncmp(const char *, const char *, size_t); 149 char *strncpy(char * __restrict, const char * __restrict, size_t); 150 size_t strnlen(const char *, size_t); 151 char *strrchr(const char *, int); 152 char *strsep(char **, const char *delim); 153 size_t strspn(const char *, const char *); 154 char *strstr(const char *, const char *); 155 int strvalid(const char *, size_t); 156 157 extern const uint32_t crc32_tab[]; 158 159 static __inline uint32_t 160 crc32_raw(const void *buf, size_t size, uint32_t crc) 161 { 162 const uint8_t *p = (const uint8_t *)buf; 163 164 while (size--) 165 crc = crc32_tab[(crc ^ *p++) & 0xFF] ^ (crc >> 8); 166 return (crc); 167 } 168 169 static __inline uint32_t 170 crc32(const void *buf, size_t size) 171 { 172 uint32_t crc; 173 174 crc = crc32_raw(buf, size, ~0U); 175 return (crc ^ ~0U); 176 } 177 178 uint32_t 179 calculate_crc32c(uint32_t crc32c, const unsigned char *buffer, 180 unsigned int length); 181 182 183 LIBKERN_INLINE void *memset(void *, int, size_t); 184 #ifdef LIBKERN_BODY 185 LIBKERN_INLINE void * 186 memset(void *b, int c, size_t len) 187 { 188 char *bb; 189 190 if (c == 0) 191 bzero(b, len); 192 else 193 for (bb = (char *)b; len--; ) 194 *bb++ = c; 195 return (b); 196 } 197 #endif 198 199 static __inline char * 200 index(const char *p, int ch) 201 { 202 203 return (strchr(p, ch)); 204 } 205 206 static __inline char * 207 rindex(const char *p, int ch) 208 { 209 210 return (strrchr(p, ch)); 211 } 212 213 /* fnmatch() return values. */ 214 #define FNM_NOMATCH 1 /* Match failed. */ 215 216 /* fnmatch() flags. */ 217 #define FNM_NOESCAPE 0x01 /* Disable backslash escaping. */ 218 #define FNM_PATHNAME 0x02 /* Slash must be matched by slash. */ 219 #define FNM_PERIOD 0x04 /* Period must be matched by period. */ 220 #define FNM_LEADING_DIR 0x08 /* Ignore /<tail> after Imatch. */ 221 #define FNM_CASEFOLD 0x10 /* Case insensitive search. */ 222 #define FNM_IGNORECASE FNM_CASEFOLD 223 #define FNM_FILE_NAME FNM_PATHNAME 224 225 #endif /* !_SYS_LIBKERN_H_ */ 226