1 /* $OpenBSD: libkern.h,v 1.37 2023/12/21 02:57:14 jsg Exp $ */ 2 /* $NetBSD: libkern.h,v 1.7 1996/03/14 18:52:08 christos Exp $ */ 3 4 /*- 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)libkern.h 8.1 (Berkeley) 6/10/93 33 */ 34 35 #ifndef __LIBKERN_H__ 36 #define __LIBKERN_H__ 37 38 #include <sys/types.h> 39 40 #ifndef LIBKERN_INLINE 41 #define LIBKERN_INLINE static __inline 42 #define LIBKERN_BODY 43 #endif 44 45 46 LIBKERN_INLINE int imax(int, int); 47 LIBKERN_INLINE int imin(int, int); 48 LIBKERN_INLINE u_int max(u_int, u_int); 49 LIBKERN_INLINE u_int min(u_int, u_int); 50 LIBKERN_INLINE long lmax(long, long); 51 LIBKERN_INLINE long lmin(long, long); 52 LIBKERN_INLINE u_long ulmax(u_long, u_long); 53 LIBKERN_INLINE u_long ulmin(u_long, u_long); 54 LIBKERN_INLINE int abs(int); 55 56 #ifdef LIBKERN_BODY 57 LIBKERN_INLINE int 58 imax(int a, int b) 59 { 60 return (a > b ? a : b); 61 } 62 LIBKERN_INLINE int 63 imin(int a, int b) 64 { 65 return (a < b ? a : b); 66 } 67 LIBKERN_INLINE long 68 lmax(long a, long b) 69 { 70 return (a > b ? a : b); 71 } 72 LIBKERN_INLINE long 73 lmin(long a, long b) 74 { 75 return (a < b ? a : b); 76 } 77 LIBKERN_INLINE u_int 78 max(u_int a, u_int b) 79 { 80 return (a > b ? a : b); 81 } 82 LIBKERN_INLINE u_int 83 min(u_int a, u_int b) 84 { 85 return (a < b ? a : b); 86 } 87 LIBKERN_INLINE u_long 88 ulmax(u_long a, u_long b) 89 { 90 return (a > b ? a : b); 91 } 92 LIBKERN_INLINE u_long 93 ulmin(u_long a, u_long b) 94 { 95 return (a < b ? a : b); 96 } 97 98 LIBKERN_INLINE int 99 abs(int j) 100 { 101 return(j < 0 ? -j : j); 102 } 103 #endif 104 105 #ifdef NDEBUG /* tradition! */ 106 #define assert(e) ((void)0) 107 #else 108 #define assert(e) ((e) ? (void)0 : \ 109 __assert("", __FILE__, __LINE__, #e)) 110 #endif 111 112 #define __KASSERTSTR "kernel %sassertion \"%s\" failed: file \"%s\", line %d" 113 114 #ifndef DIAGNOSTIC 115 #define KASSERTMSG(e, msg, ...) ((void)0) 116 #define KASSERT(e) ((void)0) 117 #else 118 #define KASSERTMSG(e, msg, ...) ((e) ? (void)0 : \ 119 panic(__KASSERTSTR " " msg, "diagnostic ", #e, \ 120 __FILE__, __LINE__, ## __VA_ARGS__)) 121 #define KASSERT(e) ((e) ? (void)0 : \ 122 __assert("diagnostic ", __FILE__, __LINE__, #e)) 123 #endif 124 125 #ifndef DEBUG 126 #define KDASSERTMSG(e, msg, ...) ((void)0) 127 #define KDASSERT(e) ((void)0) 128 #else 129 #define KDASSERTMSG(e, msg, ...) ((e) ? (void)0 : \ 130 panic(__KASSERTSTR " " msg, "debugging ", #e, \ 131 __FILE__, __LINE__, ## __VA_ARGS__)) 132 #define KDASSERT(e) ((e) ? (void)0 : \ 133 __assert("debugging ", __FILE__, __LINE__, #e)) 134 #endif 135 136 #define CTASSERT(x) extern char _ctassert[(x) ? 1 : -1 ] \ 137 __attribute__((__unused__)) 138 139 /* Prototypes for non-quad routines. */ 140 void __assert(const char *, const char *, int, const char *) 141 __attribute__ ((__noreturn__)); 142 int bcmp(const void *, const void *, size_t); 143 void bzero(void *, size_t); 144 void explicit_bzero(void *, size_t); 145 int ffs(int); 146 int fls(int); 147 int flsl(long); 148 void *memchr(const void *, int, size_t); 149 int memcmp(const void *, const void *, size_t); 150 void *memset(void *, int c, size_t len); 151 u_int32_t random(void); 152 int scanc(u_int, const u_char *, const u_char [], int); 153 int skpc(int, size_t, u_char *); 154 size_t strlen(const char *); 155 char *strncpy(char *, const char *, size_t) 156 __attribute__ ((__bounded__(__string__,1,3))); 157 size_t strnlen(const char *, size_t); 158 size_t strlcpy(char *, const char *, size_t) 159 __attribute__ ((__bounded__(__string__,1,3))); 160 size_t strlcat(char *, const char *, size_t) 161 __attribute__ ((__bounded__(__string__,1,3))); 162 int strcmp(const char *, const char *); 163 int strncmp(const char *, const char *, size_t); 164 int strncasecmp(const char *, const char *, size_t); 165 size_t getsn(char *, size_t) 166 __attribute__ ((__bounded__(__string__,1,2))); 167 char *strchr(const char *, int); 168 char *strrchr(const char *, int); 169 int timingsafe_bcmp(const void *, const void *, size_t); 170 char *strnstr(const char *, const char *, size_t); 171 172 #endif /* __LIBKERN_H__ */ 173