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6ec2e0f5 SDJ |
1 | /* Like <fcntl.h>, but with non-working flags defined to 0. |
2 | ||
9c9d63b1 | 3 | Copyright (C) 2006-2021 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)); | |
9c9d63b1 PM |
100 | # elif defined _WIN32 && !defined __CYGWIN__ |
101 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
102 | # undef creat | |
103 | # define creat _creat | |
104 | # endif | |
105 | _GL_CXXALIAS_MDA (creat, int, (const char *filename, mode_t mode)); | |
c0c3707f CB |
106 | # else |
107 | _GL_CXXALIAS_SYS (creat, int, (const char *filename, mode_t mode)); | |
108 | # endif | |
109 | _GL_CXXALIASWARN (creat); | |
110 | #elif defined GNULIB_POSIXCHECK | |
111 | # undef creat | |
112 | /* Assume creat is always declared. */ | |
113 | _GL_WARN_ON_USE (creat, "creat is not always POSIX compliant - " | |
114 | "use gnulib module creat for portability"); | |
9c9d63b1 PM |
115 | #elif @GNULIB_MDA_CREAT@ |
116 | /* On native Windows, map 'creat' to '_creat', so that -loldnames is not | |
117 | required. In C++ with GNULIB_NAMESPACE, avoid differences between | |
118 | platforms by defining GNULIB_NAMESPACE::creat always. */ | |
119 | # if defined _WIN32 && !defined __CYGWIN__ | |
120 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
121 | # undef creat | |
122 | # define creat _creat | |
123 | # endif | |
124 | /* Need to cast, because in mingw the last argument is 'int mode'. */ | |
125 | _GL_CXXALIAS_MDA_CAST (creat, int, (const char *filename, mode_t mode)); | |
126 | # else | |
127 | _GL_CXXALIAS_SYS (creat, int, (const char *filename, mode_t mode)); | |
128 | # endif | |
129 | _GL_CXXALIASWARN (creat); | |
c0c3707f CB |
130 | #endif |
131 | ||
6ec2e0f5 SDJ |
132 | #if @GNULIB_FCNTL@ |
133 | # if @REPLACE_FCNTL@ | |
134 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
135 | # undef fcntl | |
136 | # define fcntl rpl_fcntl | |
137 | # endif | |
138 | _GL_FUNCDECL_RPL (fcntl, int, (int fd, int action, ...)); | |
139 | _GL_CXXALIAS_RPL (fcntl, int, (int fd, int action, ...)); | |
698be2d8 CB |
140 | # if !GNULIB_defined_rpl_fcntl |
141 | # define GNULIB_defined_rpl_fcntl 1 | |
142 | # endif | |
6ec2e0f5 SDJ |
143 | # else |
144 | # if !@HAVE_FCNTL@ | |
145 | _GL_FUNCDECL_SYS (fcntl, int, (int fd, int action, ...)); | |
698be2d8 CB |
146 | # if !GNULIB_defined_fcntl |
147 | # define GNULIB_defined_fcntl 1 | |
148 | # endif | |
6ec2e0f5 SDJ |
149 | # endif |
150 | _GL_CXXALIAS_SYS (fcntl, int, (int fd, int action, ...)); | |
151 | # endif | |
152 | _GL_CXXALIASWARN (fcntl); | |
153 | #elif defined GNULIB_POSIXCHECK | |
154 | # undef fcntl | |
155 | # if HAVE_RAW_DECL_FCNTL | |
156 | _GL_WARN_ON_USE (fcntl, "fcntl is not always POSIX compliant - " | |
157 | "use gnulib module fcntl for portability"); | |
158 | # endif | |
159 | #endif | |
160 | ||
161 | #if @GNULIB_OPEN@ | |
162 | # if @REPLACE_OPEN@ | |
163 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
164 | # undef open | |
165 | # define open rpl_open | |
166 | # endif | |
167 | _GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...) | |
168 | _GL_ARG_NONNULL ((1))); | |
169 | _GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...)); | |
9c9d63b1 PM |
170 | # elif defined _WIN32 && !defined __CYGWIN__ |
171 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
172 | # undef open | |
173 | # define open _open | |
174 | # endif | |
175 | _GL_CXXALIAS_MDA (open, int, (const char *filename, int flags, ...)); | |
6ec2e0f5 SDJ |
176 | # else |
177 | _GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...)); | |
178 | # endif | |
179 | /* On HP-UX 11, in C++ mode, open() is defined as an inline function with a | |
180 | default argument. _GL_CXXALIASWARN does not work in this case. */ | |
181 | # if !defined __hpux | |
182 | _GL_CXXALIASWARN (open); | |
183 | # endif | |
184 | #elif defined GNULIB_POSIXCHECK | |
185 | # undef open | |
186 | /* Assume open is always declared. */ | |
187 | _GL_WARN_ON_USE (open, "open is not always POSIX compliant - " | |
188 | "use gnulib module open for portability"); | |
9c9d63b1 PM |
189 | #elif @GNULIB_MDA_OPEN@ |
190 | /* On native Windows, map 'open' to '_open', so that -loldnames is not | |
191 | required. In C++ with GNULIB_NAMESPACE, avoid differences between | |
192 | platforms by defining GNULIB_NAMESPACE::open always. */ | |
193 | # if defined _WIN32 && !defined __CYGWIN__ | |
194 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
195 | # undef open | |
196 | # define open _open | |
197 | # endif | |
198 | _GL_CXXALIAS_MDA (open, int, (const char *filename, int flags, ...)); | |
199 | # else | |
200 | _GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...)); | |
201 | # endif | |
202 | # if !defined __hpux | |
203 | _GL_CXXALIASWARN (open); | |
204 | # endif | |
6ec2e0f5 SDJ |
205 | #endif |
206 | ||
207 | #if @GNULIB_OPENAT@ | |
208 | # if @REPLACE_OPENAT@ | |
209 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
210 | # undef openat | |
211 | # define openat rpl_openat | |
212 | # endif | |
213 | _GL_FUNCDECL_RPL (openat, int, | |
214 | (int fd, char const *file, int flags, /* mode_t mode */ ...) | |
215 | _GL_ARG_NONNULL ((2))); | |
216 | _GL_CXXALIAS_RPL (openat, int, | |
217 | (int fd, char const *file, int flags, /* mode_t mode */ ...)); | |
218 | # else | |
219 | # if !@HAVE_OPENAT@ | |
220 | _GL_FUNCDECL_SYS (openat, int, | |
221 | (int fd, char const *file, int flags, /* mode_t mode */ ...) | |
222 | _GL_ARG_NONNULL ((2))); | |
223 | # endif | |
224 | _GL_CXXALIAS_SYS (openat, int, | |
225 | (int fd, char const *file, int flags, /* mode_t mode */ ...)); | |
226 | # endif | |
227 | _GL_CXXALIASWARN (openat); | |
228 | #elif defined GNULIB_POSIXCHECK | |
229 | # undef openat | |
230 | # if HAVE_RAW_DECL_OPENAT | |
231 | _GL_WARN_ON_USE (openat, "openat is not portable - " | |
232 | "use gnulib module openat for portability"); | |
233 | # endif | |
234 | #endif | |
235 | ||
236 | ||
237 | /* Fix up the FD_* macros, only known to be missing on mingw. */ | |
238 | ||
239 | #ifndef FD_CLOEXEC | |
240 | # define FD_CLOEXEC 1 | |
241 | #endif | |
242 | ||
243 | /* Fix up the supported F_* macros. Intentionally leave other F_* | |
244 | macros undefined. Only known to be missing on mingw. */ | |
245 | ||
246 | #ifndef F_DUPFD_CLOEXEC | |
247 | # define F_DUPFD_CLOEXEC 0x40000000 | |
248 | /* Witness variable: 1 if gnulib defined F_DUPFD_CLOEXEC, 0 otherwise. */ | |
249 | # define GNULIB_defined_F_DUPFD_CLOEXEC 1 | |
250 | #else | |
251 | # define GNULIB_defined_F_DUPFD_CLOEXEC 0 | |
252 | #endif | |
253 | ||
254 | #ifndef F_DUPFD | |
255 | # define F_DUPFD 1 | |
256 | #endif | |
257 | ||
258 | #ifndef F_GETFD | |
259 | # define F_GETFD 2 | |
260 | #endif | |
261 | ||
262 | /* Fix up the O_* macros. */ | |
263 | ||
264 | /* AIX 7.1 with XL C 12.1 defines O_CLOEXEC, O_NOFOLLOW, and O_TTY_INIT | |
265 | to values outside 'int' range, so omit these misdefinitions. | |
266 | But avoid namespace pollution on non-AIX systems. */ | |
267 | #ifdef _AIX | |
268 | # include <limits.h> | |
269 | # if defined O_CLOEXEC && ! (INT_MIN <= O_CLOEXEC && O_CLOEXEC <= INT_MAX) | |
270 | # undef O_CLOEXEC | |
271 | # endif | |
272 | # if defined O_NOFOLLOW && ! (INT_MIN <= O_NOFOLLOW && O_NOFOLLOW <= INT_MAX) | |
273 | # undef O_NOFOLLOW | |
274 | # endif | |
275 | # if defined O_TTY_INIT && ! (INT_MIN <= O_TTY_INIT && O_TTY_INIT <= INT_MAX) | |
276 | # undef O_TTY_INIT | |
277 | # endif | |
278 | #endif | |
279 | ||
280 | #if !defined O_DIRECT && defined O_DIRECTIO | |
281 | /* Tru64 spells it 'O_DIRECTIO'. */ | |
282 | # define O_DIRECT O_DIRECTIO | |
283 | #endif | |
284 | ||
285 | #if !defined O_CLOEXEC && defined O_NOINHERIT | |
286 | /* Mingw spells it 'O_NOINHERIT'. */ | |
287 | # define O_CLOEXEC O_NOINHERIT | |
288 | #endif | |
289 | ||
290 | #ifndef O_CLOEXEC | |
c0c3707f CB |
291 | # define O_CLOEXEC 0x40000000 /* Try to not collide with system O_* flags. */ |
292 | # define GNULIB_defined_O_CLOEXEC 1 | |
293 | #else | |
294 | # define GNULIB_defined_O_CLOEXEC 0 | |
6ec2e0f5 SDJ |
295 | #endif |
296 | ||
297 | #ifndef O_DIRECT | |
298 | # define O_DIRECT 0 | |
299 | #endif | |
300 | ||
301 | #ifndef O_DIRECTORY | |
302 | # define O_DIRECTORY 0 | |
303 | #endif | |
304 | ||
305 | #ifndef O_DSYNC | |
306 | # define O_DSYNC 0 | |
307 | #endif | |
308 | ||
309 | #ifndef O_EXEC | |
310 | # define O_EXEC O_RDONLY /* This is often close enough in older systems. */ | |
311 | #endif | |
312 | ||
313 | #ifndef O_IGNORE_CTTY | |
314 | # define O_IGNORE_CTTY 0 | |
315 | #endif | |
316 | ||
317 | #ifndef O_NDELAY | |
318 | # define O_NDELAY 0 | |
319 | #endif | |
320 | ||
321 | #ifndef O_NOATIME | |
322 | # define O_NOATIME 0 | |
323 | #endif | |
324 | ||
325 | #ifndef O_NONBLOCK | |
326 | # define O_NONBLOCK O_NDELAY | |
327 | #endif | |
328 | ||
329 | /* If the gnulib module 'nonblocking' is in use, guarantee a working non-zero | |
330 | value of O_NONBLOCK. Otherwise, O_NONBLOCK is defined (above) to O_NDELAY | |
331 | or to 0 as fallback. */ | |
332 | #if @GNULIB_NONBLOCKING@ | |
333 | # if O_NONBLOCK | |
334 | # define GNULIB_defined_O_NONBLOCK 0 | |
335 | # else | |
336 | # define GNULIB_defined_O_NONBLOCK 1 | |
337 | # undef O_NONBLOCK | |
338 | # define O_NONBLOCK 0x40000000 | |
339 | # endif | |
340 | #endif | |
341 | ||
342 | #ifndef O_NOCTTY | |
343 | # define O_NOCTTY 0 | |
344 | #endif | |
345 | ||
346 | #ifndef O_NOFOLLOW | |
347 | # define O_NOFOLLOW 0 | |
348 | #endif | |
349 | ||
350 | #ifndef O_NOLINK | |
351 | # define O_NOLINK 0 | |
352 | #endif | |
353 | ||
354 | #ifndef O_NOLINKS | |
355 | # define O_NOLINKS 0 | |
356 | #endif | |
357 | ||
358 | #ifndef O_NOTRANS | |
359 | # define O_NOTRANS 0 | |
360 | #endif | |
361 | ||
362 | #ifndef O_RSYNC | |
363 | # define O_RSYNC 0 | |
364 | #endif | |
365 | ||
366 | #ifndef O_SEARCH | |
367 | # define O_SEARCH O_RDONLY /* This is often close enough in older systems. */ | |
368 | #endif | |
369 | ||
370 | #ifndef O_SYNC | |
371 | # define O_SYNC 0 | |
372 | #endif | |
373 | ||
374 | #ifndef O_TTY_INIT | |
375 | # define O_TTY_INIT 0 | |
376 | #endif | |
377 | ||
378 | #if ~O_ACCMODE & (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH) | |
379 | # undef O_ACCMODE | |
380 | # define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH) | |
381 | #endif | |
382 | ||
383 | /* For systems that distinguish between text and binary I/O. | |
384 | O_BINARY is usually declared in fcntl.h */ | |
385 | #if !defined O_BINARY && defined _O_BINARY | |
386 | /* For MSC-compatible compilers. */ | |
387 | # define O_BINARY _O_BINARY | |
388 | # define O_TEXT _O_TEXT | |
389 | #endif | |
390 | ||
391 | #if defined __BEOS__ || defined __HAIKU__ | |
392 | /* BeOS 5 and Haiku have O_BINARY and O_TEXT, but they have no effect. */ | |
393 | # undef O_BINARY | |
394 | # undef O_TEXT | |
395 | #endif | |
396 | ||
397 | #ifndef O_BINARY | |
398 | # define O_BINARY 0 | |
399 | # define O_TEXT 0 | |
400 | #endif | |
401 | ||
402 | /* Fix up the AT_* macros. */ | |
403 | ||
404 | /* Work around a bug in Solaris 9 and 10: AT_FDCWD is positive. Its | |
405 | value exceeds INT_MAX, so its use as an int doesn't conform to the | |
406 | C standard, and GCC and Sun C complain in some cases. If the bug | |
407 | is present, undef AT_FDCWD here, so it can be redefined below. */ | |
408 | #if 0 < AT_FDCWD && AT_FDCWD == 0xffd19553 | |
409 | # undef AT_FDCWD | |
410 | #endif | |
411 | ||
412 | /* Use the same bit pattern as Solaris 9, but with the proper | |
413 | signedness. The bit pattern is important, in case this actually is | |
414 | Solaris with the above workaround. */ | |
415 | #ifndef AT_FDCWD | |
416 | # define AT_FDCWD (-3041965) | |
417 | #endif | |
418 | ||
419 | /* Use the same values as Solaris 9. This shouldn't matter, but | |
420 | there's no real reason to differ. */ | |
421 | #ifndef AT_SYMLINK_NOFOLLOW | |
422 | # define AT_SYMLINK_NOFOLLOW 4096 | |
423 | #endif | |
424 | ||
425 | #ifndef AT_REMOVEDIR | |
426 | # define AT_REMOVEDIR 1 | |
427 | #endif | |
428 | ||
429 | /* Solaris 9 lacks these two, so just pick unique values. */ | |
430 | #ifndef AT_SYMLINK_FOLLOW | |
431 | # define AT_SYMLINK_FOLLOW 2 | |
432 | #endif | |
433 | ||
434 | #ifndef AT_EACCESS | |
435 | # define AT_EACCESS 4 | |
436 | #endif | |
437 | ||
438 | ||
439 | #endif /* _@GUARD_PREFIX@_FCNTL_H */ | |
440 | #endif /* _@GUARD_PREFIX@_FCNTL_H */ | |
441 | #endif |