linux.h
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1 /*
2  * Copyright (C) 1996-2018 The Squid Software Foundation and contributors
3  *
4  * Squid software is distributed under GPLv2+ license and includes
5  * contributions from numerous individuals and organizations.
6  * Please see the COPYING and CONTRIBUTORS files for details.
7  */
8 
9 #ifndef SQUID_OS_LINUX_H
10 #define SQUID_OS_LINUX_H
11 
12 #if _SQUID_LINUX_
13 
14 /****************************************************************************
15  *--------------------------------------------------------------------------*
16  * DO *NOT* MAKE ANY CHANGES below here unless you know what you're doing...*
17  *--------------------------------------------------------------------------*
18  ****************************************************************************/
19 
20 #if USE_ASYNC_IO
21 #define _SQUID_LINUX_THREADS_
22 #endif
23 
24 /*
25  * res_init() is just a macro re-definition of __res_init on Linux (Debian/Ubuntu)
26  */
27 #if !defined(HAVE_RES_INIT) && defined(HAVE___RES_INIT) && !defined(res_init)
28 #define res_init __res_init
29 #define HAVE_RES_INIT HAVE___RES_INIT
30 #endif
31 
32 /*
33  * Netfilter header madness. (see Bug 4323)
34  *
35  * Netfilter have a history of defining their own versions of network protocol
36  * primitives without sufficient protection against the POSIX defines which are
37  * aways present in Linux.
38  *
39  * netinet/in.h must be included before any other sys header in order to properly
40  * activate include guards in <linux/libc-compat.h> the kernel maintainers added
41  * to workaround it.
42  */
43 #if HAVE_NETINET_IN_H
44 #include <netinet/in.h>
45 #endif
46 
47 /*
48  * sys/capability.h is only needed in Linux apparently.
49  *
50  * HACK: LIBCAP_BROKEN Ugly glue to get around linux header madness colliding with glibc
51  */
52 #if HAVE_SYS_CAPABILITY_H
53 
54 #if LIBCAP_BROKEN
55 #undef _POSIX_SOURCE
56 #define _LINUX_TYPES_H
57 #define _LINUX_FS_H
58 typedef uint32_t __u32;
59 #endif
60 
61 #include <sys/capability.h>
62 #endif /* HAVE_SYS_CAPABILITY_H */
63 
64 /*
65  * glob.h is provided by GNU on Linux and contains some unavoidable preprocessor
66  * logic errors in its 64-bit definitions which are hit by non-GCC compilers.
67  *
68  * #if __USE_FILE_OFFSET64 && __GNUC__ < 2
69  * # define glob glob64
70  * #endif
71  * #if !defined __USE_FILE_OFFSET64 || __GNUC__ < 2
72  * extern "C" glob(...);
73  * #endif
74  * extern "C" glob64(...);
75  *
76  * ... and multiple "C" definitions of glob64 refuse to compile.
77  * Because __GNUC__ being undefined equates to 0 and (0 < 2)
78  */
79 #if __USE_FILE_OFFSET64 && __GNUC__ < 2
80 #if HAVE_GLOB_H
81 #undef HAVE_GLOB_H
82 #endif
83 #if HAVE_GLOB
84 #undef HAVE_GLOB
85 #endif
86 #endif
87 
88 #endif /* _SQUID_LINUX_ */
89 #endif /* SQUID_OS_LINUX_H */
90 

 

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