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6ec2e0f5 SDJ |
1 | /* Like <fcntl.h>, but with non-working flags defined to 0. |
2 | ||
c0c3707f | 3 | Copyright (C) 2006-2019 Free Software Foundation, Inc. |
6ec2e0f5 SDJ |
4 | |
5 | This program is free software: you can redistribute it and/or modify | |
6 | it under the terms of the GNU 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 General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
c0c3707f | 16 | along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
6ec2e0f5 SDJ |
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 | /* Needed before <sys/stat.h>. | |
29 | May also define off_t to a 64-bit type on native Windows. */ | |
30 | #include <sys/types.h> | |
31 | /* On some systems other than glibc, <sys/stat.h> is a prerequisite of | |
32 | <fcntl.h>. On glibc systems, we would like to avoid namespace pollution. | |
33 | But on glibc systems, <fcntl.h> includes <sys/stat.h> inside an | |
34 | extern "C" { ... } block, which leads to errors in C++ mode with the | |
35 | overridden <sys/stat.h> from gnulib. These errors are known to be gone | |
36 | with g++ version >= 4.3. */ | |
37 | #if !(defined __GLIBC__ || defined __UCLIBC__) || (defined __cplusplus && defined GNULIB_NAMESPACE && (defined __ICC || !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)))) | |
38 | # include <sys/stat.h> | |
39 | #endif | |
40 | #@INCLUDE_NEXT@ @NEXT_FCNTL_H@ | |
41 | ||
c0c3707f CB |
42 | /* Native Windows platforms declare open(), creat() in <io.h>. */ |
43 | #if (@GNULIB_CREAT@ || @GNULIB_OPEN@ || defined GNULIB_POSIXCHECK) \ | |
44 | && (defined _WIN32 && ! defined __CYGWIN__) | |
45 | # include <io.h> | |
46 | #endif | |
47 | ||
6ec2e0f5 SDJ |
48 | #else |
49 | /* Normal invocation convention. */ | |
50 | ||
51 | #ifndef _@GUARD_PREFIX@_FCNTL_H | |
52 | ||
53 | /* Needed before <sys/stat.h>. | |
54 | May also define off_t to a 64-bit type on native Windows. */ | |
55 | #include <sys/types.h> | |
56 | /* On some systems other than glibc, <sys/stat.h> is a prerequisite of | |
57 | <fcntl.h>. On glibc systems, we would like to avoid namespace pollution. | |
58 | But on glibc systems, <fcntl.h> includes <sys/stat.h> inside an | |
59 | extern "C" { ... } block, which leads to errors in C++ mode with the | |
60 | overridden <sys/stat.h> from gnulib. These errors are known to be gone | |
61 | with g++ version >= 4.3. */ | |
62 | #if !(defined __GLIBC__ || defined __UCLIBC__) || (defined __cplusplus && defined GNULIB_NAMESPACE && (defined __ICC || !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)))) | |
63 | # include <sys/stat.h> | |
64 | #endif | |
65 | /* The include_next requires a split double-inclusion guard. */ | |
66 | #@INCLUDE_NEXT@ @NEXT_FCNTL_H@ | |
67 | ||
c0c3707f CB |
68 | /* Native Windows platforms declare open(), creat() in <io.h>. */ |
69 | #if (@GNULIB_CREAT@ || @GNULIB_OPEN@ || defined GNULIB_POSIXCHECK) \ | |
70 | && (defined _WIN32 && ! defined __CYGWIN__) | |
71 | # include <io.h> | |
72 | #endif | |
73 | ||
6ec2e0f5 SDJ |
74 | #ifndef _@GUARD_PREFIX@_FCNTL_H |
75 | #define _@GUARD_PREFIX@_FCNTL_H | |
76 | ||
77 | #ifndef __GLIBC__ /* Avoid namespace pollution on glibc systems. */ | |
78 | # include <unistd.h> | |
79 | #endif | |
80 | ||
6ec2e0f5 SDJ |
81 | |
82 | /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */ | |
83 | ||
84 | /* The definition of _GL_ARG_NONNULL is copied here. */ | |
85 | ||
86 | /* The definition of _GL_WARN_ON_USE is copied here. */ | |
87 | ||
88 | ||
89 | /* Declare overridden functions. */ | |
90 | ||
c0c3707f CB |
91 | #if @GNULIB_CREAT@ |
92 | # if @REPLACE_CREAT@ | |
93 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
94 | # undef creat | |
95 | # define creat rpl_creat | |
96 | # endif | |
97 | _GL_FUNCDECL_RPL (creat, int, (const char *filename, mode_t mode) | |
98 | _GL_ARG_NONNULL ((1))); | |
99 | _GL_CXXALIAS_RPL (creat, int, (const char *filename, mode_t mode)); | |
100 | # else | |
101 | _GL_CXXALIAS_SYS (creat, int, (const char *filename, mode_t mode)); | |
102 | # endif | |
103 | _GL_CXXALIASWARN (creat); | |
104 | #elif defined GNULIB_POSIXCHECK | |
105 | # undef creat | |
106 | /* Assume creat is always declared. */ | |
107 | _GL_WARN_ON_USE (creat, "creat is not always POSIX compliant - " | |
108 | "use gnulib module creat for portability"); | |
109 | #endif | |
110 | ||
6ec2e0f5 SDJ |
111 | #if @GNULIB_FCNTL@ |
112 | # if @REPLACE_FCNTL@ | |
113 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
114 | # undef fcntl | |
115 | # define fcntl rpl_fcntl | |
116 | # endif | |
117 | _GL_FUNCDECL_RPL (fcntl, int, (int fd, int action, ...)); | |
118 | _GL_CXXALIAS_RPL (fcntl, int, (int fd, int action, ...)); | |
119 | # else | |
120 | # if !@HAVE_FCNTL@ | |
121 | _GL_FUNCDECL_SYS (fcntl, int, (int fd, int action, ...)); | |
122 | # endif | |
123 | _GL_CXXALIAS_SYS (fcntl, int, (int fd, int action, ...)); | |
124 | # endif | |
125 | _GL_CXXALIASWARN (fcntl); | |
126 | #elif defined GNULIB_POSIXCHECK | |
127 | # undef fcntl | |
128 | # if HAVE_RAW_DECL_FCNTL | |
129 | _GL_WARN_ON_USE (fcntl, "fcntl is not always POSIX compliant - " | |
130 | "use gnulib module fcntl for portability"); | |
131 | # endif | |
132 | #endif | |
133 | ||
134 | #if @GNULIB_OPEN@ | |
135 | # if @REPLACE_OPEN@ | |
136 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
137 | # undef open | |
138 | # define open rpl_open | |
139 | # endif | |
140 | _GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...) | |
141 | _GL_ARG_NONNULL ((1))); | |
142 | _GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...)); | |
143 | # else | |
144 | _GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...)); | |
145 | # endif | |
146 | /* On HP-UX 11, in C++ mode, open() is defined as an inline function with a | |
147 | default argument. _GL_CXXALIASWARN does not work in this case. */ | |
148 | # if !defined __hpux | |
149 | _GL_CXXALIASWARN (open); | |
150 | # endif | |
151 | #elif defined GNULIB_POSIXCHECK | |
152 | # undef open | |
153 | /* Assume open is always declared. */ | |
154 | _GL_WARN_ON_USE (open, "open is not always POSIX compliant - " | |
155 | "use gnulib module open for portability"); | |
156 | #endif | |
157 | ||
158 | #if @GNULIB_OPENAT@ | |
159 | # if @REPLACE_OPENAT@ | |
160 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
161 | # undef openat | |
162 | # define openat rpl_openat | |
163 | # endif | |
164 | _GL_FUNCDECL_RPL (openat, int, | |
165 | (int fd, char const *file, int flags, /* mode_t mode */ ...) | |
166 | _GL_ARG_NONNULL ((2))); | |
167 | _GL_CXXALIAS_RPL (openat, int, | |
168 | (int fd, char const *file, int flags, /* mode_t mode */ ...)); | |
169 | # else | |
170 | # if !@HAVE_OPENAT@ | |
171 | _GL_FUNCDECL_SYS (openat, int, | |
172 | (int fd, char const *file, int flags, /* mode_t mode */ ...) | |
173 | _GL_ARG_NONNULL ((2))); | |
174 | # endif | |
175 | _GL_CXXALIAS_SYS (openat, int, | |
176 | (int fd, char const *file, int flags, /* mode_t mode */ ...)); | |
177 | # endif | |
178 | _GL_CXXALIASWARN (openat); | |
179 | #elif defined GNULIB_POSIXCHECK | |
180 | # undef openat | |
181 | # if HAVE_RAW_DECL_OPENAT | |
182 | _GL_WARN_ON_USE (openat, "openat is not portable - " | |
183 | "use gnulib module openat for portability"); | |
184 | # endif | |
185 | #endif | |
186 | ||
187 | ||
188 | /* Fix up the FD_* macros, only known to be missing on mingw. */ | |
189 | ||
190 | #ifndef FD_CLOEXEC | |
191 | # define FD_CLOEXEC 1 | |
192 | #endif | |
193 | ||
194 | /* Fix up the supported F_* macros. Intentionally leave other F_* | |
195 | macros undefined. Only known to be missing on mingw. */ | |
196 | ||
197 | #ifndef F_DUPFD_CLOEXEC | |
198 | # define F_DUPFD_CLOEXEC 0x40000000 | |
199 | /* Witness variable: 1 if gnulib defined F_DUPFD_CLOEXEC, 0 otherwise. */ | |
200 | # define GNULIB_defined_F_DUPFD_CLOEXEC 1 | |
201 | #else | |
202 | # define GNULIB_defined_F_DUPFD_CLOEXEC 0 | |
203 | #endif | |
204 | ||
205 | #ifndef F_DUPFD | |
206 | # define F_DUPFD 1 | |
207 | #endif | |
208 | ||
209 | #ifndef F_GETFD | |
210 | # define F_GETFD 2 | |
211 | #endif | |
212 | ||
213 | /* Fix up the O_* macros. */ | |
214 | ||
215 | /* AIX 7.1 with XL C 12.1 defines O_CLOEXEC, O_NOFOLLOW, and O_TTY_INIT | |
216 | to values outside 'int' range, so omit these misdefinitions. | |
217 | But avoid namespace pollution on non-AIX systems. */ | |
218 | #ifdef _AIX | |
219 | # include <limits.h> | |
220 | # if defined O_CLOEXEC && ! (INT_MIN <= O_CLOEXEC && O_CLOEXEC <= INT_MAX) | |
221 | # undef O_CLOEXEC | |
222 | # endif | |
223 | # if defined O_NOFOLLOW && ! (INT_MIN <= O_NOFOLLOW && O_NOFOLLOW <= INT_MAX) | |
224 | # undef O_NOFOLLOW | |
225 | # endif | |
226 | # if defined O_TTY_INIT && ! (INT_MIN <= O_TTY_INIT && O_TTY_INIT <= INT_MAX) | |
227 | # undef O_TTY_INIT | |
228 | # endif | |
229 | #endif | |
230 | ||
231 | #if !defined O_DIRECT && defined O_DIRECTIO | |
232 | /* Tru64 spells it 'O_DIRECTIO'. */ | |
233 | # define O_DIRECT O_DIRECTIO | |
234 | #endif | |
235 | ||
236 | #if !defined O_CLOEXEC && defined O_NOINHERIT | |
237 | /* Mingw spells it 'O_NOINHERIT'. */ | |
238 | # define O_CLOEXEC O_NOINHERIT | |
239 | #endif | |
240 | ||
241 | #ifndef O_CLOEXEC | |
c0c3707f CB |
242 | # define O_CLOEXEC 0x40000000 /* Try to not collide with system O_* flags. */ |
243 | # define GNULIB_defined_O_CLOEXEC 1 | |
244 | #else | |
245 | # define GNULIB_defined_O_CLOEXEC 0 | |
6ec2e0f5 SDJ |
246 | #endif |
247 | ||
248 | #ifndef O_DIRECT | |
249 | # define O_DIRECT 0 | |
250 | #endif | |
251 | ||
252 | #ifndef O_DIRECTORY | |
253 | # define O_DIRECTORY 0 | |
254 | #endif | |
255 | ||
256 | #ifndef O_DSYNC | |
257 | # define O_DSYNC 0 | |
258 | #endif | |
259 | ||
260 | #ifndef O_EXEC | |
261 | # define O_EXEC O_RDONLY /* This is often close enough in older systems. */ | |
262 | #endif | |
263 | ||
264 | #ifndef O_IGNORE_CTTY | |
265 | # define O_IGNORE_CTTY 0 | |
266 | #endif | |
267 | ||
268 | #ifndef O_NDELAY | |
269 | # define O_NDELAY 0 | |
270 | #endif | |
271 | ||
272 | #ifndef O_NOATIME | |
273 | # define O_NOATIME 0 | |
274 | #endif | |
275 | ||
276 | #ifndef O_NONBLOCK | |
277 | # define O_NONBLOCK O_NDELAY | |
278 | #endif | |
279 | ||
280 | /* If the gnulib module 'nonblocking' is in use, guarantee a working non-zero | |
281 | value of O_NONBLOCK. Otherwise, O_NONBLOCK is defined (above) to O_NDELAY | |
282 | or to 0 as fallback. */ | |
283 | #if @GNULIB_NONBLOCKING@ | |
284 | # if O_NONBLOCK | |
285 | # define GNULIB_defined_O_NONBLOCK 0 | |
286 | # else | |
287 | # define GNULIB_defined_O_NONBLOCK 1 | |
288 | # undef O_NONBLOCK | |
289 | # define O_NONBLOCK 0x40000000 | |
290 | # endif | |
291 | #endif | |
292 | ||
293 | #ifndef O_NOCTTY | |
294 | # define O_NOCTTY 0 | |
295 | #endif | |
296 | ||
297 | #ifndef O_NOFOLLOW | |
298 | # define O_NOFOLLOW 0 | |
299 | #endif | |
300 | ||
301 | #ifndef O_NOLINK | |
302 | # define O_NOLINK 0 | |
303 | #endif | |
304 | ||
305 | #ifndef O_NOLINKS | |
306 | # define O_NOLINKS 0 | |
307 | #endif | |
308 | ||
309 | #ifndef O_NOTRANS | |
310 | # define O_NOTRANS 0 | |
311 | #endif | |
312 | ||
313 | #ifndef O_RSYNC | |
314 | # define O_RSYNC 0 | |
315 | #endif | |
316 | ||
317 | #ifndef O_SEARCH | |
318 | # define O_SEARCH O_RDONLY /* This is often close enough in older systems. */ | |
319 | #endif | |
320 | ||
321 | #ifndef O_SYNC | |
322 | # define O_SYNC 0 | |
323 | #endif | |
324 | ||
325 | #ifndef O_TTY_INIT | |
326 | # define O_TTY_INIT 0 | |
327 | #endif | |
328 | ||
329 | #if ~O_ACCMODE & (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH) | |
330 | # undef O_ACCMODE | |
331 | # define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH) | |
332 | #endif | |
333 | ||
334 | /* For systems that distinguish between text and binary I/O. | |
335 | O_BINARY is usually declared in fcntl.h */ | |
336 | #if !defined O_BINARY && defined _O_BINARY | |
337 | /* For MSC-compatible compilers. */ | |
338 | # define O_BINARY _O_BINARY | |
339 | # define O_TEXT _O_TEXT | |
340 | #endif | |
341 | ||
342 | #if defined __BEOS__ || defined __HAIKU__ | |
343 | /* BeOS 5 and Haiku have O_BINARY and O_TEXT, but they have no effect. */ | |
344 | # undef O_BINARY | |
345 | # undef O_TEXT | |
346 | #endif | |
347 | ||
348 | #ifndef O_BINARY | |
349 | # define O_BINARY 0 | |
350 | # define O_TEXT 0 | |
351 | #endif | |
352 | ||
353 | /* Fix up the AT_* macros. */ | |
354 | ||
355 | /* Work around a bug in Solaris 9 and 10: AT_FDCWD is positive. Its | |
356 | value exceeds INT_MAX, so its use as an int doesn't conform to the | |
357 | C standard, and GCC and Sun C complain in some cases. If the bug | |
358 | is present, undef AT_FDCWD here, so it can be redefined below. */ | |
359 | #if 0 < AT_FDCWD && AT_FDCWD == 0xffd19553 | |
360 | # undef AT_FDCWD | |
361 | #endif | |
362 | ||
363 | /* Use the same bit pattern as Solaris 9, but with the proper | |
364 | signedness. The bit pattern is important, in case this actually is | |
365 | Solaris with the above workaround. */ | |
366 | #ifndef AT_FDCWD | |
367 | # define AT_FDCWD (-3041965) | |
368 | #endif | |
369 | ||
370 | /* Use the same values as Solaris 9. This shouldn't matter, but | |
371 | there's no real reason to differ. */ | |
372 | #ifndef AT_SYMLINK_NOFOLLOW | |
373 | # define AT_SYMLINK_NOFOLLOW 4096 | |
374 | #endif | |
375 | ||
376 | #ifndef AT_REMOVEDIR | |
377 | # define AT_REMOVEDIR 1 | |
378 | #endif | |
379 | ||
380 | /* Solaris 9 lacks these two, so just pick unique values. */ | |
381 | #ifndef AT_SYMLINK_FOLLOW | |
382 | # define AT_SYMLINK_FOLLOW 2 | |
383 | #endif | |
384 | ||
385 | #ifndef AT_EACCESS | |
386 | # define AT_EACCESS 4 | |
387 | #endif | |
388 | ||
389 | ||
390 | #endif /* _@GUARD_PREFIX@_FCNTL_H */ | |
391 | #endif /* _@GUARD_PREFIX@_FCNTL_H */ | |
392 | #endif |