honeyd/cdefs.h@a2c6460cfb16
honeyd/cdefs.h
Mon, 28 Jan 2013 17:37:18 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Mon, 28 Jan 2013 17:37:18 +0100
- changeset 758
- a2c6460cfb16
- permissions
- -rw-r--r--
Correct socket error reporting improvement with IPv6 portable code,
after helpful recommendation by Saúl Ibarra Corretgé on OSips devlist.
1 /*
2 ** cdefs.h: ISO C interface
3 ** Most of this file was developed by Sendmail, Incorporated, so:
4 **
5 ** Copyright (c) 2000-2002 Sendmail, Inc. and its suppliers.
6 **
7 ** Permission to use, copy, modify, and distribute this software for
8 ** any purpose with or without fee is hereby granted, provided that
9 ** the above copyright notice and this permission notice appear in all
10 ** copies.
11 **
12 ** THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
13 ** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
14 ** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
15 ** IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
16 ** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
17 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
18 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
19 ** USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
20 ** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
21 ** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
22 ** OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 ** SUCH DAMAGE.
24 **
25 */
27 /*
28 ** BSD and Linux already have <sys/cdefs.h> which defines a set of C
29 ** language portability macros that are a defacto standard in the open
30 ** source community. This file allows for building on platforms lacking
31 ** these definitions.
32 */
33 #ifndef HOND_CDEFS_H
34 # define HOND_CDEFS_H
36 # if defined(__cplusplus)
37 # define __BEGIN_DECLS extern "C" {
38 # define __END_DECLS };
39 # else /* defined(__cplusplus) */
40 # define __BEGIN_DECLS
41 # define __END_DECLS
42 # endif /* defined(__cplusplus) */
43 # if defined(__STDC__) || defined(__cplusplus)
44 # ifndef __P
45 # define __P(protos) protos
46 # endif /* __P */
47 # define __CONCAT(x,y) x ## y
48 # define __STRING(x) #x
49 # else /* defined(__STDC__) || defined(__cplusplus) */
50 # define __P(protos) ()
51 # define __CONCAT(x,y) x/**/y
52 # define __STRING(x) "x"
53 # define const
54 # define signed
55 # define volatile
56 # endif /* defined(__STDC__) || defined(__cplusplus) */
58 /*
59 ** Define HOND_DEAD, a macro used to declare functions that do not return
60 ** to their caller.
61 */
62 # ifndef HOND_DEAD
63 # if __GNUC__ >= 2
64 # if __GNUC__ == 2 && __GNUC_MINOR__ < 5
65 # define HOND_DEAD(proto) volatile proto
66 # else /* __GNUC__ == 2 && __GNUC_MINOR__ < 5 */
67 # define HOND_DEAD(proto) proto __attribute__((__noreturn__))
68 # endif /* __GNUC__ == 2 && __GNUC_MINOR__ < 5 */
69 # else /* __GNUC__ >= 2 */
70 # define HOND_DEAD(proto) proto
71 # endif /* __GNUC__ >= 2 */
72 # endif /* HOND_DEAD */
74 /*
75 ** Define HOND_UNUSED, a macro used to declare variables that may be unused.
76 */
77 # ifndef HOND_UNUSED
78 # if __GNUC__ >= 2
79 # if __GNUC__ == 2 && __GNUC_MINOR__ < 7
80 # define HOND_UNUSED(decl) decl
81 # else /* __GNUC__ == 2 && __GNUC_MINOR__ < 7 */
82 # define HOND_UNUSED(decl) decl __attribute__((__unused__))
83 # endif /* __GNUC__ == 2 && __GNUC_MINOR__ < 7 */
84 # else /* __GNUC__ >= 2 */
85 # define HOND_UNUSED(decl) decl
86 # endif /* __GNUC__ >= 2 */
87 # endif /* HOND_UNUSED */
89 /*
90 ** The HOND_NONVOLATILE macro is used to declare variables that are not
91 ** volatile, but which must be declared volatile when compiling with
92 ** gcc -O -Wall in order to suppress bogus warning messages.
93 **
94 ** Variables that actually are volatile should be declared volatile
95 ** using the "volatile" keyword. If a variable actually is volatile,
96 ** then HOND_NONVOLATILE should not be used.
97 **
98 ** To compile source code with gcc and see all non-bogus warnings use:
99 **
100 ** gcc -O -Wall -DHOND_OMIT_BOGUS_WARNINGS ...
101 **
102 ** Do not use -DHOND_OMIT_BOGUS_WARNINGS when compiling production
103 ** software, because there is a performance hit.
104 */
105 # ifdef HOND_OMIT_BOGUS_WARNINGS
106 # define HOND_NONVOLATILE volatile
107 # else /* HOND_OMIT_BOGUS_WARNINGS */
108 # define HOND_NONVOLATILE
109 # endif /* HOND_OMIT_BOGUS_WARNINGS */
111 /*
112 ** Turn on format string argument checking.
113 */
114 # ifndef HOND_CONF_FORMAT_TEST
115 # if __GNUC__ == 2 && __GNUC_MINOR__ >= 7
116 # define HOND_CONF_FORMAT_TEST 1
117 # else /* __GNUC__ == 2 && __GNUC_MINOR__ >= 7 */
118 # define HOND_CONF_FORMAT_TEST 0
119 # endif /* __GNUC__ == 2 && __GNUC_MINOR__ >= 7 */
120 # endif /* HOND_CONF_FORMAT_TEST */
122 # ifndef PRINTFLIKE
123 # if HOND_CONF_FORMAT_TEST
124 # define PRINTFLIKE(x,y) __attribute__ ((__format__ (__printf__, x, y)))
125 # else /* HOND_CONF_FORMAT_TEST */
126 # define PRINTFLIKE(x,y)
127 # endif /* HOND_CONF_FORMAT_TEST */
128 # endif /* ! PRINTFLIKE */
130 # ifndef SCANFLIKE
131 # if HOND_CONF_FORMAT_TEST
132 # define SCANFLIKE(x,y) __attribute__ ((__format__ (__scanf__, x, y)))
133 # else /* HOND_CONF_FORMAT_TEST */
134 # define SCANFLIKE(x,y)
135 # endif /* HOND_CONF_FORMAT_TEST */
136 # endif /* ! SCANFLIKE */
138 #endif /* ! HOND_CDEFS_H */
