FreeBSD/Linux Kernel Cross Reference
sys/sys/libkern.h
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_FFSL
107 int ffsl (long);
108 #endif
109 #ifndef HAVE_INLINE_FLS
110 int fls (int);
111 #endif
112 #ifndef HAVE_INLINE_FLSL
113 int flsl(long);
114 #endif
115 int locc (int, char *, u_int);
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 int strcmp (const char *, const char *);
128 int strcasecmp (const char *, const char *);
129 char *strcpy (char * __restrict, const char * __restrict);
130 size_t strlcat (char *, const char *, size_t);
131 size_t strlcpy (char *, const char *, size_t);
132 size_t strlen (const char *);
133 int strncmp (const char *, const char *, size_t);
134 int strncasecmp (const char *, const char *, size_t);
135 char *strncpy (char * __restrict, const char * __restrict, size_t);
136 char *strsep(char **, const char *);
137 int _kfnmatch(const char *, const char *, int, int);
138 void * memcchr(const void *, int, size_t);
139 char * hexncpy(const u_char *, int, char *, int, const char *);
140
141 /*
142 * memset can't be an inline, it is used by gcc-4.x directly.
143 */
144 void *memset(void *b, int c, size_t len);
145 void *memmove(void *s1, const void *s2, size_t n);
146
147
148 static __inline int
149 kfnmatch(const char *pattern, const char *string, int flags)
150 {
151 return(_kfnmatch(pattern, string, flags, 0));
152 }
153
154 static __inline int
155 memcmp(const void *b1, const void *b2, size_t len)
156 {
157 return (bcmp(b1, b2, len));
158 }
159
160 static __inline char *
161 strchr(const char *p, int ch)
162 {
163 return (index(p, ch));
164 }
165
166 static __inline char *
167 strrchr(const char *p, int ch)
168 {
169 return (rindex(p, ch));
170 }
171
172 /* kfnmatch() return values. */
173 #define FNM_NOMATCH 1 /* Match failed. */
174
175 /* kfnmatch() flags. */
176 #define FNM_NOESCAPE 0x01 /* Disable backslash escaping. */
177 #define FNM_PATHNAME 0x02 /* Slash must be matched by slash. */
178 #define FNM_PERIOD 0x04 /* Period must be matched by period. */
179 #define FNM_LEADING_DIR 0x08 /* Ignore /<tail> after Imatch. */
180 #define FNM_CASEFOLD 0x10 /* Case insensitive search. */
181 #define FNM_IGNORECASE FNM_CASEFOLD
182 #define FNM_FILE_NAME FNM_PATHNAME
183
184 #endif /* _KERNEL */
185 #endif /* !_SYS_LIBKERN_H_ */
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