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3d458a81 AW |
1 | /* Like <fcntl.h>, but with non-working flags defined to 0. |
2 | ||
f0007cad | 3 | Copyright (C) 2006-2012 Free Software Foundation, Inc. |
3d458a81 AW |
4 | |
5 | This program is free software: you can redistribute it and/or modify | |
6 | it under the terms of the GNU Lesser General Public License as published by | |
7 | the Free Software Foundation; either version 3 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public License | |
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
17 | ||
18 | /* written by Paul Eggert */ | |
19 | ||
20 | #if __GNUC__ >= 3 | |
21 | @PRAGMA_SYSTEM_HEADER@ | |
22 | #endif | |
23 | @PRAGMA_COLUMNS@ | |
24 | ||
25 | #if defined __need_system_fcntl_h | |
26 | /* Special invocation convention. */ | |
27 | ||
28 | #include <sys/types.h> | |
29 | /* On some systems other than glibc, <sys/stat.h> is a prerequisite of | |
30 | <fcntl.h>. On glibc systems, we would like to avoid namespace pollution. | |
31 | But on glibc systems, <fcntl.h> includes <sys/stat.h> inside an | |
32 | extern "C" { ... } block, which leads to errors in C++ mode with the | |
33 | overridden <sys/stat.h> from gnulib. These errors are known to be gone | |
34 | with g++ version >= 4.3. */ | |
35 | #if !(defined __GLIBC__ || defined __UCLIBC__) || (defined __cplusplus && defined GNULIB_NAMESPACE && !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))) | |
36 | # include <sys/stat.h> | |
37 | #endif | |
38 | #@INCLUDE_NEXT@ @NEXT_FCNTL_H@ | |
39 | ||
40 | #else | |
41 | /* Normal invocation convention. */ | |
42 | ||
43 | #ifndef _@GUARD_PREFIX@_FCNTL_H | |
44 | ||
45 | #include <sys/types.h> | |
46 | /* On some systems other than glibc, <sys/stat.h> is a prerequisite of | |
47 | <fcntl.h>. On glibc systems, we would like to avoid namespace pollution. | |
48 | But on glibc systems, <fcntl.h> includes <sys/stat.h> inside an | |
49 | extern "C" { ... } block, which leads to errors in C++ mode with the | |
50 | overridden <sys/stat.h> from gnulib. These errors are known to be gone | |
51 | with g++ version >= 4.3. */ | |
52 | #if !(defined __GLIBC__ || defined __UCLIBC__) || (defined __cplusplus && defined GNULIB_NAMESPACE && !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))) | |
53 | # include <sys/stat.h> | |
54 | #endif | |
55 | /* The include_next requires a split double-inclusion guard. */ | |
56 | #@INCLUDE_NEXT@ @NEXT_FCNTL_H@ | |
57 | ||
58 | #ifndef _@GUARD_PREFIX@_FCNTL_H | |
59 | #define _@GUARD_PREFIX@_FCNTL_H | |
60 | ||
61 | #ifndef __GLIBC__ /* Avoid namespace pollution on glibc systems. */ | |
62 | # include <unistd.h> | |
63 | #endif | |
64 | ||
f0007cad LC |
65 | /* Native Windows platforms declare open(), creat() in <io.h>. */ |
66 | #if (@GNULIB_OPEN@ || defined GNULIB_POSIXCHECK) \ | |
67 | && ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__) | |
68 | # include <io.h> | |
69 | #endif | |
70 | ||
3d458a81 AW |
71 | |
72 | /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */ | |
73 | ||
74 | /* The definition of _GL_ARG_NONNULL is copied here. */ | |
75 | ||
76 | /* The definition of _GL_WARN_ON_USE is copied here. */ | |
77 | ||
78 | ||
79 | /* Declare overridden functions. */ | |
80 | ||
81 | #if @GNULIB_FCNTL@ | |
82 | # if @REPLACE_FCNTL@ | |
83 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
84 | # undef fcntl | |
85 | # define fcntl rpl_fcntl | |
86 | # endif | |
87 | _GL_FUNCDECL_RPL (fcntl, int, (int fd, int action, ...)); | |
88 | _GL_CXXALIAS_RPL (fcntl, int, (int fd, int action, ...)); | |
89 | # else | |
90 | # if !@HAVE_FCNTL@ | |
91 | _GL_FUNCDECL_SYS (fcntl, int, (int fd, int action, ...)); | |
92 | # endif | |
93 | _GL_CXXALIAS_SYS (fcntl, int, (int fd, int action, ...)); | |
94 | # endif | |
95 | _GL_CXXALIASWARN (fcntl); | |
96 | #elif defined GNULIB_POSIXCHECK | |
97 | # undef fcntl | |
98 | # if HAVE_RAW_DECL_FCNTL | |
99 | _GL_WARN_ON_USE (fcntl, "fcntl is not always POSIX compliant - " | |
100 | "use gnulib module fcntl for portability"); | |
101 | # endif | |
102 | #endif | |
103 | ||
104 | #if @GNULIB_OPEN@ | |
105 | # if @REPLACE_OPEN@ | |
106 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
107 | # undef open | |
108 | # define open rpl_open | |
109 | # endif | |
110 | _GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...) | |
111 | _GL_ARG_NONNULL ((1))); | |
112 | _GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...)); | |
113 | # else | |
114 | _GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...)); | |
115 | # endif | |
116 | /* On HP-UX 11, in C++ mode, open() is defined as an inline function with a | |
117 | default argument. _GL_CXXALIASWARN does not work in this case. */ | |
118 | # if !defined __hpux | |
119 | _GL_CXXALIASWARN (open); | |
120 | # endif | |
121 | #elif defined GNULIB_POSIXCHECK | |
122 | # undef open | |
123 | /* Assume open is always declared. */ | |
124 | _GL_WARN_ON_USE (open, "open is not always POSIX compliant - " | |
125 | "use gnulib module open for portability"); | |
126 | #endif | |
127 | ||
128 | #if @GNULIB_OPENAT@ | |
129 | # if @REPLACE_OPENAT@ | |
130 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
131 | # undef openat | |
132 | # define openat rpl_openat | |
133 | # endif | |
134 | _GL_FUNCDECL_RPL (openat, int, | |
135 | (int fd, char const *file, int flags, /* mode_t mode */ ...) | |
136 | _GL_ARG_NONNULL ((2))); | |
137 | _GL_CXXALIAS_RPL (openat, int, | |
138 | (int fd, char const *file, int flags, /* mode_t mode */ ...)); | |
139 | # else | |
140 | # if !@HAVE_OPENAT@ | |
141 | _GL_FUNCDECL_SYS (openat, int, | |
142 | (int fd, char const *file, int flags, /* mode_t mode */ ...) | |
143 | _GL_ARG_NONNULL ((2))); | |
144 | # endif | |
145 | _GL_CXXALIAS_SYS (openat, int, | |
146 | (int fd, char const *file, int flags, /* mode_t mode */ ...)); | |
147 | # endif | |
148 | _GL_CXXALIASWARN (openat); | |
149 | #elif defined GNULIB_POSIXCHECK | |
150 | # undef openat | |
151 | # if HAVE_RAW_DECL_OPENAT | |
152 | _GL_WARN_ON_USE (openat, "openat is not portable - " | |
153 | "use gnulib module openat for portability"); | |
154 | # endif | |
155 | #endif | |
156 | ||
157 | ||
158 | /* Fix up the FD_* macros, only known to be missing on mingw. */ | |
159 | ||
160 | #ifndef FD_CLOEXEC | |
161 | # define FD_CLOEXEC 1 | |
162 | #endif | |
163 | ||
164 | /* Fix up the supported F_* macros. Intentionally leave other F_* | |
165 | macros undefined. Only known to be missing on mingw. */ | |
166 | ||
167 | #ifndef F_DUPFD_CLOEXEC | |
168 | # define F_DUPFD_CLOEXEC 0x40000000 | |
169 | /* Witness variable: 1 if gnulib defined F_DUPFD_CLOEXEC, 0 otherwise. */ | |
170 | # define GNULIB_defined_F_DUPFD_CLOEXEC 1 | |
171 | #else | |
172 | # define GNULIB_defined_F_DUPFD_CLOEXEC 0 | |
173 | #endif | |
174 | ||
175 | #ifndef F_DUPFD | |
176 | # define F_DUPFD 1 | |
177 | #endif | |
178 | ||
179 | #ifndef F_GETFD | |
180 | # define F_GETFD 2 | |
181 | #endif | |
182 | ||
183 | /* Fix up the O_* macros. */ | |
184 | ||
185 | #if !defined O_DIRECT && defined O_DIRECTIO | |
f0007cad | 186 | /* Tru64 spells it 'O_DIRECTIO'. */ |
3d458a81 AW |
187 | # define O_DIRECT O_DIRECTIO |
188 | #endif | |
189 | ||
190 | #if !defined O_CLOEXEC && defined O_NOINHERIT | |
f0007cad | 191 | /* Mingw spells it 'O_NOINHERIT'. */ |
3d458a81 AW |
192 | # define O_CLOEXEC O_NOINHERIT |
193 | #endif | |
194 | ||
195 | #ifndef O_CLOEXEC | |
196 | # define O_CLOEXEC 0 | |
197 | #endif | |
198 | ||
199 | #ifndef O_DIRECT | |
200 | # define O_DIRECT 0 | |
201 | #endif | |
202 | ||
203 | #ifndef O_DIRECTORY | |
204 | # define O_DIRECTORY 0 | |
205 | #endif | |
206 | ||
207 | #ifndef O_DSYNC | |
208 | # define O_DSYNC 0 | |
209 | #endif | |
210 | ||
211 | #ifndef O_EXEC | |
212 | # define O_EXEC O_RDONLY /* This is often close enough in older systems. */ | |
213 | #endif | |
214 | ||
215 | #ifndef O_NDELAY | |
216 | # define O_NDELAY 0 | |
217 | #endif | |
218 | ||
219 | #ifndef O_NOATIME | |
220 | # define O_NOATIME 0 | |
221 | #endif | |
222 | ||
223 | #ifndef O_NONBLOCK | |
224 | # define O_NONBLOCK O_NDELAY | |
225 | #endif | |
226 | ||
227 | /* If the gnulib module 'nonblocking' is in use, guarantee a working non-zero | |
228 | value of O_NONBLOCK. Otherwise, O_NONBLOCK is defined (above) to O_NDELAY | |
229 | or to 0 as fallback. */ | |
230 | #if @GNULIB_NONBLOCKING@ | |
231 | # if O_NONBLOCK | |
232 | # define GNULIB_defined_O_NONBLOCK 0 | |
233 | # else | |
234 | # define GNULIB_defined_O_NONBLOCK 1 | |
235 | # undef O_NONBLOCK | |
236 | # define O_NONBLOCK 0x40000000 | |
237 | # endif | |
238 | #endif | |
239 | ||
240 | #ifndef O_NOCTTY | |
241 | # define O_NOCTTY 0 | |
242 | #endif | |
243 | ||
244 | #ifndef O_NOFOLLOW | |
245 | # define O_NOFOLLOW 0 | |
246 | #endif | |
247 | ||
248 | #ifndef O_NOLINKS | |
249 | # define O_NOLINKS 0 | |
250 | #endif | |
251 | ||
252 | #ifndef O_RSYNC | |
253 | # define O_RSYNC 0 | |
254 | #endif | |
255 | ||
256 | #ifndef O_SEARCH | |
257 | # define O_SEARCH O_RDONLY /* This is often close enough in older systems. */ | |
258 | #endif | |
259 | ||
260 | #ifndef O_SYNC | |
261 | # define O_SYNC 0 | |
262 | #endif | |
263 | ||
264 | #ifndef O_TTY_INIT | |
265 | # define O_TTY_INIT 0 | |
266 | #endif | |
267 | ||
268 | #if O_ACCMODE != (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH) | |
269 | # undef O_ACCMODE | |
270 | # define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH) | |
271 | #endif | |
272 | ||
273 | /* For systems that distinguish between text and binary I/O. | |
274 | O_BINARY is usually declared in fcntl.h */ | |
275 | #if !defined O_BINARY && defined _O_BINARY | |
276 | /* For MSC-compatible compilers. */ | |
277 | # define O_BINARY _O_BINARY | |
278 | # define O_TEXT _O_TEXT | |
279 | #endif | |
280 | ||
281 | #if defined __BEOS__ || defined __HAIKU__ | |
282 | /* BeOS 5 and Haiku have O_BINARY and O_TEXT, but they have no effect. */ | |
283 | # undef O_BINARY | |
284 | # undef O_TEXT | |
285 | #endif | |
286 | ||
287 | #ifndef O_BINARY | |
288 | # define O_BINARY 0 | |
289 | # define O_TEXT 0 | |
290 | #endif | |
291 | ||
292 | /* Fix up the AT_* macros. */ | |
293 | ||
294 | /* Work around a bug in Solaris 9 and 10: AT_FDCWD is positive. Its | |
295 | value exceeds INT_MAX, so its use as an int doesn't conform to the | |
296 | C standard, and GCC and Sun C complain in some cases. If the bug | |
297 | is present, undef AT_FDCWD here, so it can be redefined below. */ | |
298 | #if 0 < AT_FDCWD && AT_FDCWD == 0xffd19553 | |
299 | # undef AT_FDCWD | |
300 | #endif | |
301 | ||
302 | /* Use the same bit pattern as Solaris 9, but with the proper | |
303 | signedness. The bit pattern is important, in case this actually is | |
304 | Solaris with the above workaround. */ | |
305 | #ifndef AT_FDCWD | |
306 | # define AT_FDCWD (-3041965) | |
307 | #endif | |
308 | ||
309 | /* Use the same values as Solaris 9. This shouldn't matter, but | |
310 | there's no real reason to differ. */ | |
311 | #ifndef AT_SYMLINK_NOFOLLOW | |
312 | # define AT_SYMLINK_NOFOLLOW 4096 | |
313 | #endif | |
314 | ||
315 | #ifndef AT_REMOVEDIR | |
316 | # define AT_REMOVEDIR 1 | |
317 | #endif | |
318 | ||
319 | /* Solaris 9 lacks these two, so just pick unique values. */ | |
320 | #ifndef AT_SYMLINK_FOLLOW | |
321 | # define AT_SYMLINK_FOLLOW 2 | |
322 | #endif | |
323 | ||
324 | #ifndef AT_EACCESS | |
325 | # define AT_EACCESS 4 | |
326 | #endif | |
327 | ||
328 | ||
329 | #endif /* _@GUARD_PREFIX@_FCNTL_H */ | |
330 | #endif /* _@GUARD_PREFIX@_FCNTL_H */ | |
331 | #endif |