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_long ulmax(u_long a, u_long b) { return (a > b ? a : b); } 65 static __inline u_long ulmin(u_long a, u_long b) { return (a < b ? a : b); } 66 static __inline off_t omax(off_t a, off_t b) { return (a > b ? a : b); } 67 static __inline off_t omin(off_t a, off_t b) { return (a < b ? a : b); } 68 69 static __inline int abs(int a) { return (a < 0 ? -a : a); } 70 static __inline long labs(long a) { return (a < 0 ? -a : a); } 71 static __inline quad_t qabs(quad_t a) { return (a < 0 ? -a : a); } 72 73 /* Prototypes for non-quad routines. */ 74 struct malloc_type; 75 uint32_t arc4random(void); 76 void arc4rand(void *ptr, u_int len, int reseed); 77 int bcmp(const void *, const void *, size_t); 78 void *bsearch(const void *, const void *, size_t, 79 size_t, int (*)(const void *, const void *)); 80 #ifndef HAVE_INLINE_FFS 81 int ffs(int); 82 #endif 83 #ifndef HAVE_INLINE_FFSL 84 int ffsl(long); 85 #endif 86 #ifndef HAVE_INLINE_FLS 87 int fls(int); 88 #endif 89 #ifndef HAVE_INLINE_FLSL 90 int flsl(long); 91 #endif 92 int fnmatch(const char *, const char *, int); 93 void gets(char *, size_t, int); 94 int locc(int, char *, u_int); 95 int memcmp(const void *b1, const void *b2, size_t len); 96 void qsort(void *base, size_t nmemb, size_t size, 97 int (*compar)(const void *, const void *)); 98 void qsort_r(void *base, size_t nmemb, size_t size, void *thunk, 99 int (*compar)(void *, const void *, const void *)); 100 u_long random(void); 101 char *index(const char *, int); 102 char *rindex(const char *, int); 103 int scanc(u_int, const u_char *, const u_char *, int); 104 int skpc(int, int, char *); 105 void srandom(u_long); 106 int strcasecmp(const char *, const char *); 107 char *strcat(char * __restrict, const char * __restrict); 108 int strcmp(const char *, const char *); 109 char *strcpy(char * __restrict, const char * __restrict); 110 size_t strcspn(const char * __restrict, const char * __restrict) __pure; 111 char *strdup(const char *__restrict, struct malloc_type *); 112 size_t strlcat(char *, const char *, size_t); 113 size_t strlcpy(char *, const char *, size_t); 114 size_t strlen(const char *); 115 int strncasecmp(const char *, const char *, size_t); 116 int strncmp(const char *, const char *, size_t); 117 char *strncpy(char * __restrict, const char * __restrict, size_t); 118 char *strsep(char **, const char *delim); 119 size_t strspn(const char *, const char *); 120 char *strstr(const char *, const char *); 121 int strvalid(const char *, size_t); 122 123 extern uint32_t crc32_tab[]; 124 125 static __inline uint32_t 126 crc32_raw(const void *buf, size_t size, uint32_t crc) 127 { 128 const uint8_t *p = (const uint8_t *)buf; 129 130 while (size--) 131 crc = crc32_tab[(crc ^ *p++) & 0xFF] ^ (crc >> 8); 132 return (crc); 133 } 134 135 static __inline uint32_t 136 crc32(const void *buf, size_t size) 137 { 138 uint32_t crc; 139 140 crc = crc32_raw(buf, size, ~0U); 141 return (crc ^ ~0U); 142 } 143 144 uint32_t 145 calculate_crc32c(uint32_t crc32c, const unsigned char *buffer, 146 unsigned int length); 147 148 149 LIBKERN_INLINE void *memset(void *, int, size_t); 150 #ifdef LIBKERN_BODY 151 LIBKERN_INLINE void * 152 memset(void *b, int c, size_t len) 153 { 154 char *bb; 155 156 if (c == 0) 157 bzero(b, len); 158 else 159 for (bb = (char *)b; len--; ) 160 *bb++ = c; 161 return (b); 162 } 163 #endif 164 165 static __inline char * 166 strchr(const char *p, int ch) 167 { 168 return (index(p, ch)); 169 } 170 171 static __inline char * 172 strrchr(const char *p, int ch) 173 { 174 return (rindex(p, ch)); 175 } 176 177 /* fnmatch() return values. */ 178 #define FNM_NOMATCH 1 /* Match failed. */ 179 180 /* fnmatch() flags. */ 181 #define FNM_NOESCAPE 0x01 /* Disable backslash escaping. */ 182 #define FNM_PATHNAME 0x02 /* Slash must be matched by slash. */ 183 #define FNM_PERIOD 0x04 /* Period must be matched by period. */ 184 #define FNM_LEADING_DIR 0x08 /* Ignore /<tail> after Imatch. */ 185 #define FNM_CASEFOLD 0x10 /* Case insensitive search. */ 186 #define FNM_IGNORECASE FNM_CASEFOLD 187 #define FNM_FILE_NAME FNM_PATHNAME 188 189 #endif /* !_SYS_LIBKERN_H_ */ 190