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1 /*-
2 * Copyright (c) 1991, 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. 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
30 #ifndef _COMPAT_H_
31 #define _COMPAT_H_
32
33 /** @file */
34
35 #include <sys/types.h>
36
37 #if (defined(_WIN32) && !defined(__CYGWIN__)) || defined(__DJGPP__)
38 typedef unsigned char u_char;
39 typedef unsigned int u_int;
40 typedef unsigned long u_long;
41 typedef unsigned short u_short;
42 #endif /* _WIN32 || __DJGPP__ */
43
44 #ifdef NO_POSIX_SIGNALS
45 #define sigemptyset(set) (*(set) = 0)
46 #define sigfillset(set) (*(set) = ~(sigset_t)0, 0)
47 #define sigaddset(set,signo) (*(set) |= sigmask(signo), 0)
48 #define sigdelset(set,signo) (*(set) &= ~sigmask(signo), 0)
49 #define sigismember(set,signo) ((*(set) & sigmask(signo)) != 0)
50
51 #define SIG_BLOCK 1
52 #define SIG_UNBLOCK 2
53 #define SIG_SETMASK 3
54
55 static int __sigtemp; /**< For the use of #sigprocmask */
56
57 /** @remark
58 * Repeated test of @CODE{oset != NULL} is to avoid @CODE{"*0"}.
59 */
60 #define sigprocmask(how, set, oset) \
61 ((__sigtemp = \
62 (((how) == SIG_BLOCK) ? \
63 sigblock(0) | *(set) : \
64 (((how) == SIG_UNBLOCK) ? \
65 sigblock(0) & ~(*(set)) : \
66 ((how) == SIG_SETMASK ? \
67 *(set) : sigblock(0))))), \
68 ((oset) ? (*(oset ? oset : set) = sigsetmask(__sigtemp)) : \
69 sigsetmask(__sigtemp)), 0)
70 #endif
71
72 /**
73 * @name BYTE_ORDER
74 * @details
75 * If your system doesn't have an include file with the appropriate
76 * byte order set, make sure you specify the correct one.
77 */
78 /** @{ */
79 #ifndef BYTE_ORDER
80 #define LITTLE_ENDIAN 1234
81 #define BIG_ENDIAN 4321
82 #ifdef WORDS_BIGENDIAN
83 #define BYTE_ORDER BIG_ENDIAN
84 #else
85 #define BYTE_ORDER LITTLE_ENDIAN
86 #endif
87 #endif
88 /** @} */
89
90 /** @name Compatibility macros */
91 /*
92 * Old definitions were rewritten using 'HAVE_XXX' macros.
93 *
94 * #if defined(SYSV) || defined(SYSTEM5)
95 * #define index(a, b) strchr(a, b)
96 * #define rindex(a, b) strrchr(a, b)
97 * #define bzero(a, b) memset(a, 0, b)
98 * #define bcmp(a, b, n) memcmp(a, b, n)
99 * #define bcopy(a, b, n) memmove(b, a, n)
100 * #endif
101 *
102 * #if defined(BSD) || defined(BSD4_3)
103 * #define strchr(a, b) index(a, b)
104 * #define strrchr(a, b) rindex(a, b)
105 * #define memcmp(a, b, n) bcmp(a, b, n)
106 * #define memmove(a, b, n) bcopy(b, a, n)
107 * #endif
108 */
109 /** @{ */
110 #if !defined (HAVE_INDEX) && defined (HAVE_STRCHR)
111 #define index(a, b) strchr(a, b)
112 #endif
113 #if !defined (HAVE_RINDEX) && defined (HAVE_STRRCHR)
114 #define rindex(a, b) strrchr(a, b)
115 #endif
116 #if !defined (HAVE_BZERO) && defined (HAVE_MEMSET)
117 #define bzero(a, b) memset(a, 0, b)
118 #endif
119 #if !defined (HAVE_BCMP) && defined (HAVE_MEMCMP)
120 #define bcmp(a, b, n) memcmp(a, b, n)
121 #endif
122 #if !defined (HAVE_BCOPY) && defined (HAVE_MEMMOVE)
123 #define bcopy(a, b, n) memmove(b, a, n)
124 #endif
125
126 #if !defined (HAVE_STRCHR) && defined (HAVE_INDEX)
127 #define strchr(a, b) index(a, b)
128 #endif
129 #if !defined (HAVE_STRRCHR) && defined (HAVE_RINDEX)
130 #define strrchr(a, b) rindex(a, b)
131 #endif
132 #if !defined (HAVE_MEMCMP) && defined (HAVE_BCMP)
133 #define memcmp(a, b, n) bcmp(a, b, n)
134 #endif
135 #if !defined (HAVE_MEMMOVE) && defined (HAVE_BCOPY)
136 #define memmove(a, b, n) bcopy(b, a, n)
137 #endif
138 /** @} */
139
140 /**
141 * @def O_ACCMODE
142 * @details
143 * 32-bit machine. The #DB routines are theoretically independent of
144 * the size of @NAME{u_shorts} and @NAME{u_longs}, but I don't know that anyone has
145 * ever actually tried it. At a minimum, change the following @CODE{\#define}'s
146 * if you are trying to compile on a different type of system.
147 */
148 /** @{ */
149 #ifndef O_ACCMODE /** @NAME{POSIX 1003.1} access mode mask. */
150 #define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
151 #endif
152 /** @} */
153
154 #ifndef _POSIX2_RE_DUP_MAX /** @NAME{POSIX 1003.2} RE limit. */
155 #define _POSIX2_RE_DUP_MAX 255
156 #endif
157
158 /**
159 * @details
160 * If you can't provide lock values in the @XREF{open,2} call. Note, this
161 * allows races to happen.
162 */
163 /** @{ */
164 #ifndef O_EXLOCK /** @NAME{4.4BSD} extension. */
165 #define O_EXLOCK 0
166 #endif
167 /** @} */
168
169 #ifndef O_SHLOCK /** @NAME{4.4BSD} extension. */
170 #define O_SHLOCK 0
171 #endif
172
173 #ifndef O_BINARY /** @NAME{UNIX} systems don't often have or need this */
174 #define O_BINARY 0
175 #endif
176
177 #ifndef O_NONBLOCK /** @NAME{Win32} systems doesn't have or need this */
178 #define O_NONBLOCK 0
179 #endif
180
181 #ifndef EFTYPE /** @NAME{POSIX 1003.1} format errno. */
182 #define EFTYPE EINVAL
183 #endif
184
185 /** @name POSIX 1003.1 seek values */
186 /** @{ */
187 #ifndef SEEK_END
188 #define SEEK_SET 0
189 #define SEEK_CUR 1
190 #define SEEK_END 2
191 #endif
192 /** @} */
193
194 #ifndef _POSIX2_RE_DUP_MAX /** @NAME{POSIX 1003.2} values. */
195 #define _POSIX2_RE_DUP_MAX 255
196 #endif
197
198 #ifndef NULL /** @NAME{ANSI C} @CODE{\#define}s @VAR{NULL} everywhere. */
199 #define NULL 0
200 #endif
201
202 #ifndef MAX /** Usually found in @FILE{\<sys/param.h\>}. */
203 #define MAX(_a,_b) ((_a)<(_b)?(_b):(_a))
204 #endif
205 #ifndef MIN /** Usually found in @FILE{\<sys/param.h\>}. */
206 #define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
207 #endif
208
209 /** @name POSIX 1003.1 file type tests. */
210 /** @{ */
211 #ifndef S_ISDIR
212 /** directory */
213 #define S_ISDIR(m) ((m & 0170000) == 0040000)
214 /** char special */
215 #define S_ISCHR(m) ((m & 0170000) == 0020000)
216 /** block special */
217 #define S_ISBLK(m) ((m & 0170000) == 0060000)
218 /** regular file */
219 #define S_ISREG(m) ((m & 0170000) == 0100000)
220 /** fifo */
221 #define S_ISFIFO(m) ((m & 0170000) == 0010000)
222 #endif
223 /** @} */
224
225 #ifndef HAVE_LSTAT
226 #define lstat stat
227 #endif
228 #ifndef HAVE_GETCWD
229 #define getcwd(buf, max) getwd (buf)
230 #endif
231
232 #endif /* !_COMPAT_H_ */
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