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XrdSysPlatform.hh
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1 #ifndef __XRDSYS_PLATFORM_H__
2 #define __XRDSYS_PLATFORM_H__
3 /******************************************************************************/
4 /* */
5 /* X r d S y s P l a t f o r m . h h */
6 /* */
7 /* (c) 2004 by the Board of Trustees of the Leland Stanford, Jr., University */
8 /* Produced by Andrew Hanushevsky for Stanford University under contract */
9 /* DE-AC02-76-SFO0515 with the Department of Energy */
10 /* */
11 /* This file is part of the XRootD software suite. */
12 /* */
13 /* XRootD is free software: you can redistribute it and/or modify it under */
14 /* the terms of the GNU Lesser General Public License as published by the */
15 /* Free Software Foundation, either version 3 of the License, or (at your */
16 /* option) any later version. */
17 /* */
18 /* XRootD is distributed in the hope that it will be useful, but WITHOUT */
19 /* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
20 /* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */
21 /* License for more details. */
22 /* */
23 /* You should have received a copy of the GNU Lesser General Public License */
24 /* along with XRootD in a file called COPYING.LESSER (LGPL license) and file */
25 /* COPYING (GPL license). If not, see <http://www.gnu.org/licenses/>. */
26 /* */
27 /* The copyright holder's institutional names and contributor's names may not */
28 /* be used to endorse or promote products derived from this software without */
29 /* specific prior written permission of the institution or contributor. */
30 /******************************************************************************/
31 
32 // Include stdlib so that ENDIAN macros are defined properly
33 //
34 #include <cstdlib>
35 
36 #ifdef __linux__
37 #include <memory.h>
38 #include <cstring>
39 #include <sys/types.h>
40 #include <sys/param.h>
41 #include <byteswap.h>
42 #define MAXNAMELEN NAME_MAX
43 #endif
44 
45 #ifdef __APPLE__
46 #include <AvailabilityMacros.h>
47 #include <sys/types.h>
48 #include <sys/param.h>
49 #define fdatasync(x) fsync(x)
50 #define MAXNAMELEN NAME_MAX
51 #ifndef dirent64
52 # define dirent64 dirent
53 #endif
54 #ifndef off64_t
55 #define off64_t int64_t
56 #endif
57 #if (!defined(MAC_OS_X_VERSION_10_5) || \
58  MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_5)
59 #ifndef stat64
60 # define stat64 stat
61 #endif
62 #endif
63 #endif
64 
65 #if defined(__FreeBSD__) || (defined(__FreeBSD_kernel__) && defined(__GLIBC__))
66 #include <sys/types.h>
67 #include <sys/param.h>
68 #define MAXNAMELEN NAME_MAX
69 #endif
70 
71 #ifdef __GNU__
72 #include <sys/types.h>
73 #include <sys/param.h>
74 // These are undefined on purpose in GNU/Hurd.
75 // The values below are the ones used in Linux.
76 // The proper fix is to rewrite the code to not use hardcoded values,
77 // but instead allocate memory dynamically at runtime when sizes are known.
78 // This is true also for systems where these constants are defined.
79 #define MAXNAMELEN 255
80 #define MAXPATHLEN 4096
81 #define MAXHOSTNAMELEN 64
82 #endif
83 
84 #ifdef WIN32
85 #define MAXNAMELEN 256
86 #define MAXPATHLEN 1024
87 #endif
88 
89 // The following provides historical support for Solaris 5.10.x
90 //
91 #if defined(__solaris__) && defined(__SunOS_5_10)
92 #define posix_memalign(memp, algn, sz) \
93  ((*memp = memalign(algn, sz)) ? 0 : ENOMEM)
94 #define __USE_LEGACY_PROTOTYPES__ 1
95 #endif
96 
97 #if defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__) || defined(__GNU__) || (defined(__FreeBSD_kernel__) && defined(__GLIBC__))
98 
99 #define S_IAMB 0x1FF /* access mode bits */
100 
101 #define STATFS statfs
102 #define STATFS_BUFF struct statfs
103 
104 #define FS_BLKFACT 4
105 
106 #define FLOCK_t struct flock
107 
108 typedef off_t offset_t;
109 
110 #define GTZ_NULL (struct timezone *)0
111 
112 #else
113 
114 #define STATFS statvfs
115 #define STATFS_BUFF struct statvfs
116 
117 #define FS_BLKFACT 1
118 
119 #define SHMDT_t char *
120 
121 #define FLOCK_t flock_t
122 
123 #define GTZ_NULL (void *)0
124 
125 #endif
126 
127 #ifdef __linux__
128 
129 #define SHMDT_t const void *
130 #endif
131 
132 // For alternative platforms
133 //
134 #ifdef __APPLE__
135 #ifndef POLLRDNORM
136 #define POLLRDNORM 0
137 #endif
138 #ifndef POLLRDBAND
139 #define POLLRDBAND 0
140 #endif
141 #ifndef POLLWRNORM
142 #define POLLWRNORM 0
143 #endif
144 #define O_LARGEFILE 0
145 #define SHMDT_t void *
146 #ifndef EDEADLOCK
147 #define EDEADLOCK EDEADLK
148 #endif
149 #endif
150 
151 #ifdef __FreeBSD__
152 #define O_LARGEFILE 0
153 typedef off_t off64_t;
154 #endif
155 
156 // Only sparc platforms have structure alignment problems w/ optimization
157 // so the h2xxx() variants are used when converting network streams.
158 
159 #if defined(_BIG_ENDIAN) || defined(__BIG_ENDIAN__) || \
160  defined(__IEEE_BIG_ENDIAN) || \
161  (defined(__BYTE_ORDER) && __BYTE_ORDER == __BIG_ENDIAN)
162 #define Xrd_Big_Endian
163 #ifndef htonll
164 #define htonll(_x_) _x_
165 #endif
166 #ifndef h2nll
167 #define h2nll(_x_, _y_) memcpy((void *)&_y_,(const void *)&_x_,sizeof(long long))
168 #endif
169 #ifndef ntohll
170 #define ntohll(_x_) _x_
171 #endif
172 #ifndef n2hll
173 #define n2hll(_x_, _y_) memcpy((void *)&_y_,(const void *)&_x_,sizeof(long long))
174 #endif
175 
176 #elif defined(_LITTLE_ENDIAN) || defined(__LITTLE_ENDIAN__) || \
177  defined(__IEEE_LITTLE_ENDIAN) || \
178  (defined(__BYTE_ORDER) && __BYTE_ORDER == __LITTLE_ENDIAN)
179 #if !defined(__GNUC__) || defined(__APPLE__)
180 
181 #if !defined(__sun) || (defined(__sun) && (!defined(_LP64) || defined(__SunOS_5_10)))
182 extern "C" unsigned long long Swap_n2hll(unsigned long long x);
183 #ifndef htonll
184 #define htonll(_x_) Swap_n2hll(_x_)
185 #endif
186 #ifndef ntohll
187 #define ntohll(_x_) Swap_n2hll(_x_)
188 #endif
189 #endif
190 
191 #else
192 
193 #ifndef htonll
194 #define htonll(_x_) __bswap_64(_x_)
195 #endif
196 #ifndef ntohll
197 #define ntohll(_x_) __bswap_64(_x_)
198 #endif
199 
200 #endif
201 
202 #ifndef h2nll
203 #define h2nll(_x_, _y_) memcpy((void *)&_y_,(const void *)&_x_,sizeof(long long));\
204  _y_ = htonll(_y_)
205 #endif
206 #ifndef n2hll
207 #define n2hll(_x_, _y_) memcpy((void *)&_y_,(const void *)&_x_,sizeof(long long));\
208  _y_ = ntohll(_y_)
209 #endif
210 
211 #else
212 #ifndef WIN32
213 #error Unable to determine target architecture endianness!
214 #endif
215 #endif
216 
217 #ifndef HAVE_STRLCPY
218 extern "C"
219 {extern size_t strlcpy(char *dst, const char *src, size_t size);}
220 #endif
221 
222 //
223 // To make socklen_t portable use SOCKLEN_t
224 //
225 #if defined(__solaris__) && !defined(__linux__)
226 # if __GNUC__ >= 3 || __GNUC_MINOR__ >= 90
227 # define XR__SUNGCC3
228 # endif
229 #endif
230 #if defined(__linux__)
231 # include <features.h>
232 # if __GNU_LIBRARY__ == 6
233 # ifndef XR__GLIBC
234 # define XR__GLIBC
235 # endif
236 # endif
237 #endif
238 #if defined(__GNU__)
239 # define XR__GLIBC
240 #endif
241 #if defined(_AIX) || \
242  (defined(XR__SUNGCC3) && !defined(__arch64__))
243 # define SOCKLEN_t size_t
244 #elif defined(XR__GLIBC) || \
245  defined(__FreeBSD__) || \
246  (defined(__FreeBSD_kernel__) && defined(__GLIBC__)) || \
247  (defined(XR__SUNGCC3) && defined(__arch64__)) || defined(__APPLE__) || \
248  (defined(__sun) && defined(_SOCKLEN_T))
249 # ifndef SOCKLEN_t
250 # define SOCKLEN_t socklen_t
251 # endif
252 #elif !defined(SOCKLEN_t)
253 # define SOCKLEN_t int
254 #endif
255 
256 #ifdef _LP64
257 #define PTR2INT(x) static_cast<int>((long long)x)
258 #else
259 #define PTR2INT(x) int(x)
260 #endif
261 
262 #ifdef WIN32
263 #include "XrdSys/XrdWin32.hh"
264 #define Netdata_t void *
265 #define Sokdata_t char *
266 #define IOV_INIT(data,dlen) dlen,data
267 #define MAKEDIR(path,mode) mkdir(path)
268 #define CHMOD(path, mode) {}
269 #define net_errno WSAGetLastError()
270 #else
271 #define O_BINARY 0
272 #define Netdata_t char *
273 #define Sokdata_t void *
274 #define IOV_INIT(data,dlen) data,dlen
275 #define MAKEDIR(path,mode) mkdir(path,mode)
276 #define CHMOD(path, mode) chmod(path,mode)
277 #define net_errno errno
278 #endif
279 
280 // The following gets arround a relative new gcc compiler bug
281 //
282 #define XRDABS(x) (x < 0 ? -x : x)
283 
284 #ifndef LT_MODULE_EXT
285 #define LT_MODULE_EXT ".so"
286 #endif
287 
288 #endif // __XRDSYS_PLATFORM_H__
size_t strlcpy(char *dst, const char *src, size_t size)