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1/* Like <fcntl.h>, but with non-working flags defined to 0.
2
3 Copyright (C) 2006-2023 Free Software Foundation, Inc.
4
5 This file is free software: you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as
7 published by the Free Software Foundation; either version 2.1 of the
8 License, or (at your option) any later version.
9
10 This file 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 <https://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/* 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
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
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
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
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
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
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# 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));
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");
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);
130#endif
131
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, ...));
140# if !GNULIB_defined_rpl_fcntl
141# define GNULIB_defined_rpl_fcntl 1
142# endif
143# else
144# if !@HAVE_FCNTL@
145_GL_FUNCDECL_SYS (fcntl, int, (int fd, int action, ...));
146# if !GNULIB_defined_fcntl
147# define GNULIB_defined_fcntl 1
148# endif
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, ...));
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, ...));
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");
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
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
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
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/* Ignore this flag if not supported. */
439#ifndef AT_NO_AUTOMOUNT
440# define AT_NO_AUTOMOUNT 0
441#endif
442
443#endif /* _@GUARD_PREFIX@_FCNTL_H */
444#endif /* _@GUARD_PREFIX@_FCNTL_H */
445#endif