2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * @(#)libkern.h 8.1 (Berkeley) 6/10/93
35 #ifndef _SYS_LIBKERN_H_
36 #define _SYS_LIBKERN_H_
38 #include <sys/cdefs.h>
39 #include <sys/types.h>
41 #include <sys/systm.h>
44 #ifndef LIBKERN_INLINE
45 #define LIBKERN_INLINE static __inline
49 /* BCD conversions. */
50 extern u_char const bcd2bin_data[];
51 extern u_char const bin2bcd_data[];
52 extern char const hex2ascii_data[];
54 #define LIBKERN_LEN_BCD2BIN 154
55 #define LIBKERN_LEN_BIN2BCD 100
56 #define LIBKERN_LEN_HEX2ASCII 36
62 KASSERT(bcd >= 0 && bcd < LIBKERN_LEN_BCD2BIN,
63 ("invalid bcd %d", bcd));
64 return (bcd2bin_data[bcd]);
71 KASSERT(bin >= 0 && bin < LIBKERN_LEN_BIN2BCD,
72 ("invalid bin %d", bin));
73 return (bin2bcd_data[bin]);
80 KASSERT(hex >= 0 && hex < LIBKERN_LEN_HEX2ASCII,
81 ("invalid hex %d", hex));
82 return (hex2ascii_data[hex]);
89 return (bcd == 0 || (bcd > 0 && bcd <= 0x99 && bcd2bin_data[bcd] != 0));
91 static __inline int imax(int a, int b) { return (a > b ? a : b); }
92 static __inline int imin(int a, int b) { return (a < b ? a : b); }
93 static __inline long lmax(long a, long b) { return (a > b ? a : b); }
94 static __inline long lmin(long a, long b) { return (a < b ? a : b); }
95 static __inline u_int max(u_int a, u_int b) { return (a > b ? a : b); }
96 static __inline u_int min(u_int a, u_int b) { return (a < b ? a : b); }
97 static __inline quad_t qmax(quad_t a, quad_t b) { return (a > b ? a : b); }
98 static __inline quad_t qmin(quad_t a, quad_t b) { return (a < b ? a : b); }
99 static __inline u_quad_t uqmax(u_quad_t a, u_quad_t b) { return (a > b ? a : b); }
100 static __inline u_quad_t uqmin(u_quad_t a, u_quad_t b) { return (a < b ? a : b); }
101 static __inline u_long ulmax(u_long a, u_long b) { return (a > b ? a : b); }
102 static __inline u_long ulmin(u_long a, u_long b) { return (a < b ? a : b); }
103 static __inline __uintmax_t ummax(__uintmax_t a, __uintmax_t b)
106 return (a > b ? a : b);
108 static __inline __uintmax_t ummin(__uintmax_t a, __uintmax_t b)
111 return (a < b ? a : b);
113 static __inline off_t omax(off_t a, off_t b) { return (a > b ? a : b); }
114 static __inline off_t omin(off_t a, off_t b) { return (a < b ? a : b); }
115 static __inline int abs(int a) { return (a < 0 ? -a : a); }
116 static __inline long labs(long a) { return (a < 0 ? -a : a); }
117 static __inline quad_t qabs(quad_t a) { return (a < 0 ? -a : a); }
119 #ifndef RANDOM_FENESTRASX
120 #define ARC4_ENTR_NONE 0 /* Don't have entropy yet. */
121 #define ARC4_ENTR_HAVE 1 /* Have entropy. */
122 #define ARC4_ENTR_SEED 2 /* Reseeding. */
123 extern int arc4rand_iniseed_state;
126 /* Prototypes for non-quad routines. */
128 uint32_t arc4random(void);
129 void arc4random_buf(void *, size_t);
130 uint32_t arc4random_uniform(uint32_t);
131 void arc4rand(void *, u_int, int);
132 int timingsafe_bcmp(const void *, const void *, size_t);
133 void *bsearch(const void *, const void *, size_t,
134 size_t, int (*)(const void *, const void *));
135 #ifndef HAVE_INLINE_FFS
138 #ifndef HAVE_INLINE_FFSL
141 #ifndef HAVE_INLINE_FFSLL
142 int ffsll(long long);
144 #ifndef HAVE_INLINE_FLS
147 #ifndef HAVE_INLINE_FLSL
150 #ifndef HAVE_INLINE_FLSLL
151 int flsll(long long);
153 #define bitcount64(x) __bitcount64((uint64_t)(x))
154 #define bitcount32(x) __bitcount32((uint32_t)(x))
155 #define bitcount16(x) __bitcount16((uint16_t)(x))
156 #define bitcountl(x) __bitcountl((u_long)(x))
157 #define bitcount(x) __bitcount((u_int)(x))
159 int fnmatch(const char *, const char *, int);
160 int locc(int, char *, u_int);
161 void *memchr(const void *s, int c, size_t n);
162 void *memcchr(const void *s, int c, size_t n);
163 void *memmem(const void *l, size_t l_len, const void *s, size_t s_len);
164 void qsort(void *base, size_t nmemb, size_t size,
165 int (*compar)(const void *, const void *));
166 void qsort_r(void *base, size_t nmemb, size_t size,
167 int (*compar)(const void *, const void *, void *), void *thunk);
169 int scanc(u_int, const u_char *, const u_char *, int);
170 int strcasecmp(const char *, const char *);
171 char *strcasestr(const char *, const char *);
172 char *strcat(char * __restrict, const char * __restrict);
173 char *strchr(const char *, int);
174 char *strchrnul(const char *, int);
175 int strcmp(const char *, const char *);
176 char *strcpy(char * __restrict, const char * __restrict);
177 char *strdup_flags(const char *__restrict, struct malloc_type *, int);
178 size_t strcspn(const char *, const char *) __pure;
179 char *strdup(const char *__restrict, struct malloc_type *);
180 char *strncat(char *, const char *, size_t);
181 char *strndup(const char *__restrict, size_t, struct malloc_type *);
182 size_t strlcat(char *, const char *, size_t);
183 size_t strlcpy(char *, const char *, size_t);
184 size_t strlen(const char *);
185 int strncasecmp(const char *, const char *, size_t);
186 int strncmp(const char *, const char *, size_t);
187 char *strncpy(char * __restrict, const char * __restrict, size_t);
188 size_t strnlen(const char *, size_t);
189 char *strnstr(const char *, const char *, size_t);
190 char *strrchr(const char *, int);
191 char *strsep(char **, const char *delim);
192 size_t strspn(const char *, const char *);
193 char *strstr(const char *, const char *);
194 int strvalid(const char *, size_t);
196 #ifdef SAN_NEEDS_INTERCEPTORS
197 #ifndef SAN_INTERCEPTOR
198 #define SAN_INTERCEPTOR(func) \
199 __CONCAT(SAN_INTERCEPTOR_PREFIX, __CONCAT(_, func))
201 char *SAN_INTERCEPTOR(strcpy)(char *, const char *);
202 int SAN_INTERCEPTOR(strcmp)(const char *, const char *);
203 size_t SAN_INTERCEPTOR(strlen)(const char *);
205 #define strcpy(d, s) SAN_INTERCEPTOR(strcpy)((d), (s))
206 #define strcmp(s1, s2) SAN_INTERCEPTOR(strcmp)((s1), (s2))
207 #define strlen(s) SAN_INTERCEPTOR(strlen)(s)
208 #endif /* !SAN_RUNTIME */
209 #else /* !SAN_NEEDS_INTERCEPTORS */
210 #define strcpy(d, s) __builtin_strcpy((d), (s))
211 #define strcmp(s1, s2) __builtin_strcmp((s1), (s2))
212 #define strlen(s) __builtin_strlen((s))
213 #endif /* SAN_NEEDS_INTERCEPTORS */
215 static __inline char *
216 index(const char *p, int ch)
219 return (strchr(p, ch));
222 static __inline char *
223 rindex(const char *p, int ch)
226 return (strrchr(p, ch));
229 static __inline int64_t
230 signed_extend64(uint64_t bitmap, int lsb, int width)
233 return ((int64_t)(bitmap << (63 - lsb - (width - 1)))) >>
237 static __inline int32_t
238 signed_extend32(uint32_t bitmap, int lsb, int width)
241 return ((int32_t)(bitmap << (31 - lsb - (width - 1)))) >>
245 /* fnmatch() return values. */
246 #define FNM_NOMATCH 1 /* Match failed. */
248 /* fnmatch() flags. */
249 #define FNM_NOESCAPE 0x01 /* Disable backslash escaping. */
250 #define FNM_PATHNAME 0x02 /* Slash must be matched by slash. */
251 #define FNM_PERIOD 0x04 /* Period must be matched by period. */
252 #define FNM_LEADING_DIR 0x08 /* Ignore /<tail> after Imatch. */
253 #define FNM_CASEFOLD 0x10 /* Case insensitive search. */
254 #define FNM_IGNORECASE FNM_CASEFOLD
255 #define FNM_FILE_NAME FNM_PATHNAME
257 #endif /* !_SYS_LIBKERN_H_ */