1/* Like <fcntl.h>, but with non-working flags defined to 0.
2
3   Copyright (C) 2006-2012 Free Software Foundation, Inc.
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
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/* 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 && !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)))
38# include <sys/stat.h>
39#endif
40#@INCLUDE_NEXT@ @NEXT_FCNTL_H@
41
42#else
43/* Normal invocation convention.  */
44
45#ifndef _@GUARD_PREFIX@_FCNTL_H
46
47/* Needed before <sys/stat.h>.
48   May also define off_t to a 64-bit type on native Windows.  */
49#include <sys/types.h>
50/* On some systems other than glibc, <sys/stat.h> is a prerequisite of
51   <fcntl.h>.  On glibc systems, we would like to avoid namespace pollution.
52   But on glibc systems, <fcntl.h> includes <sys/stat.h> inside an
53   extern "C" { ... } block, which leads to errors in C++ mode with the
54   overridden <sys/stat.h> from gnulib.  These errors are known to be gone
55   with g++ version >= 4.3.  */
56#if !(defined __GLIBC__ || defined __UCLIBC__) || (defined __cplusplus && defined GNULIB_NAMESPACE && !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)))
57# include <sys/stat.h>
58#endif
59/* The include_next requires a split double-inclusion guard.  */
60#@INCLUDE_NEXT@ @NEXT_FCNTL_H@
61
62#ifndef _@GUARD_PREFIX@_FCNTL_H
63#define _@GUARD_PREFIX@_FCNTL_H
64
65#ifndef __GLIBC__ /* Avoid namespace pollution on glibc systems.  */
66# include <unistd.h>
67#endif
68
69/* Native Windows platforms declare open(), creat() in <io.h>.  */
70#if (@GNULIB_OPEN@ || defined GNULIB_POSIXCHECK) \
71    && ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__)
72# include <io.h>
73#endif
74
75
76/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
77
78/* The definition of _GL_ARG_NONNULL is copied here.  */
79
80/* The definition of _GL_WARN_ON_USE is copied here.  */
81
82
83/* Declare overridden functions.  */
84
85#if @GNULIB_FCNTL@
86# if @REPLACE_FCNTL@
87#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
88#   undef fcntl
89#   define fcntl rpl_fcntl
90#  endif
91_GL_FUNCDECL_RPL (fcntl, int, (int fd, int action, ...));
92_GL_CXXALIAS_RPL (fcntl, int, (int fd, int action, ...));
93# else
94#  if !@HAVE_FCNTL@
95_GL_FUNCDECL_SYS (fcntl, int, (int fd, int action, ...));
96#  endif
97_GL_CXXALIAS_SYS (fcntl, int, (int fd, int action, ...));
98# endif
99_GL_CXXALIASWARN (fcntl);
100#elif defined GNULIB_POSIXCHECK
101# undef fcntl
102# if HAVE_RAW_DECL_FCNTL
103_GL_WARN_ON_USE (fcntl, "fcntl is not always POSIX compliant - "
104                 "use gnulib module fcntl for portability");
105# endif
106#endif
107
108#if @GNULIB_OPEN@
109# if @REPLACE_OPEN@
110#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
111#   undef open
112#   define open rpl_open
113#  endif
114_GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...)
115                             _GL_ARG_NONNULL ((1)));
116_GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...));
117# else
118_GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
119# endif
120/* On HP-UX 11, in C++ mode, open() is defined as an inline function with a
121   default argument.  _GL_CXXALIASWARN does not work in this case.  */
122# if !defined __hpux
123_GL_CXXALIASWARN (open);
124# endif
125#elif defined GNULIB_POSIXCHECK
126# undef open
127/* Assume open is always declared.  */
128_GL_WARN_ON_USE (open, "open is not always POSIX compliant - "
129                 "use gnulib module open for portability");
130#endif
131
132#if @GNULIB_OPENAT@
133# if @REPLACE_OPENAT@
134#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
135#   undef openat
136#   define openat rpl_openat
137#  endif
138_GL_FUNCDECL_RPL (openat, int,
139                  (int fd, char const *file, int flags, /* mode_t mode */ ...)
140                  _GL_ARG_NONNULL ((2)));
141_GL_CXXALIAS_RPL (openat, int,
142                  (int fd, char const *file, int flags, /* mode_t mode */ ...));
143# else
144#  if !@HAVE_OPENAT@
145_GL_FUNCDECL_SYS (openat, int,
146                  (int fd, char const *file, int flags, /* mode_t mode */ ...)
147                  _GL_ARG_NONNULL ((2)));
148#  endif
149_GL_CXXALIAS_SYS (openat, int,
150                  (int fd, char const *file, int flags, /* mode_t mode */ ...));
151# endif
152_GL_CXXALIASWARN (openat);
153#elif defined GNULIB_POSIXCHECK
154# undef openat
155# if HAVE_RAW_DECL_OPENAT
156_GL_WARN_ON_USE (openat, "openat is not portable - "
157                 "use gnulib module openat for portability");
158# endif
159#endif
160
161
162/* Fix up the FD_* macros, only known to be missing on mingw.  */
163
164#ifndef FD_CLOEXEC
165# define FD_CLOEXEC 1
166#endif
167
168/* Fix up the supported F_* macros.  Intentionally leave other F_*
169   macros undefined.  Only known to be missing on mingw.  */
170
171#ifndef F_DUPFD_CLOEXEC
172# define F_DUPFD_CLOEXEC 0x40000000
173/* Witness variable: 1 if gnulib defined F_DUPFD_CLOEXEC, 0 otherwise.  */
174# define GNULIB_defined_F_DUPFD_CLOEXEC 1
175#else
176# define GNULIB_defined_F_DUPFD_CLOEXEC 0
177#endif
178
179#ifndef F_DUPFD
180# define F_DUPFD 1
181#endif
182
183#ifndef F_GETFD
184# define F_GETFD 2
185#endif
186
187/* Fix up the O_* macros.  */
188
189#if !defined O_DIRECT && defined O_DIRECTIO
190/* Tru64 spells it 'O_DIRECTIO'.  */
191# define O_DIRECT O_DIRECTIO
192#endif
193
194#if !defined O_CLOEXEC && defined O_NOINHERIT
195/* Mingw spells it 'O_NOINHERIT'.  */
196# define O_CLOEXEC O_NOINHERIT
197#endif
198
199#ifndef O_CLOEXEC
200# define O_CLOEXEC 0
201#endif
202
203#ifndef O_DIRECT
204# define O_DIRECT 0
205#endif
206
207#ifndef O_DIRECTORY
208# define O_DIRECTORY 0
209#endif
210
211#ifndef O_DSYNC
212# define O_DSYNC 0
213#endif
214
215#ifndef O_EXEC
216# define O_EXEC O_RDONLY /* This is often close enough in older systems.  */
217#endif
218
219#ifndef O_IGNORE_CTTY
220# define O_IGNORE_CTTY 0
221#endif
222
223#ifndef O_NDELAY
224# define O_NDELAY 0
225#endif
226
227#ifndef O_NOATIME
228# define O_NOATIME 0
229#endif
230
231#ifndef O_NONBLOCK
232# define O_NONBLOCK O_NDELAY
233#endif
234
235/* If the gnulib module 'nonblocking' is in use, guarantee a working non-zero
236   value of O_NONBLOCK.  Otherwise, O_NONBLOCK is defined (above) to O_NDELAY
237   or to 0 as fallback.  */
238#if @GNULIB_NONBLOCKING@
239# if O_NONBLOCK
240#  define GNULIB_defined_O_NONBLOCK 0
241# else
242#  define GNULIB_defined_O_NONBLOCK 1
243#  undef O_NONBLOCK
244#  define O_NONBLOCK 0x40000000
245# endif
246#endif
247
248#ifndef O_NOCTTY
249# define O_NOCTTY 0
250#endif
251
252#ifndef O_NOFOLLOW
253# define O_NOFOLLOW 0
254#endif
255
256#ifndef O_NOLINK
257# define O_NOLINK 0
258#endif
259
260#ifndef O_NOLINKS
261# define O_NOLINKS 0
262#endif
263
264#ifndef O_NOTRANS
265# define O_NOTRANS 0
266#endif
267
268#ifndef O_RSYNC
269# define O_RSYNC 0
270#endif
271
272#ifndef O_SEARCH
273# define O_SEARCH O_RDONLY /* This is often close enough in older systems.  */
274#endif
275
276#ifndef O_SYNC
277# define O_SYNC 0
278#endif
279
280#ifndef O_TTY_INIT
281# define O_TTY_INIT 0
282#endif
283
284#if ~O_ACCMODE & (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH)
285# undef O_ACCMODE
286# define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH)
287#endif
288
289/* For systems that distinguish between text and binary I/O.
290   O_BINARY is usually declared in fcntl.h  */
291#if !defined O_BINARY && defined _O_BINARY
292  /* For MSC-compatible compilers.  */
293# define O_BINARY _O_BINARY
294# define O_TEXT _O_TEXT
295#endif
296
297#if defined __BEOS__ || defined __HAIKU__
298  /* BeOS 5 and Haiku have O_BINARY and O_TEXT, but they have no effect.  */
299# undef O_BINARY
300# undef O_TEXT
301#endif
302
303#ifndef O_BINARY
304# define O_BINARY 0
305# define O_TEXT 0
306#endif
307
308/* Fix up the AT_* macros.  */
309
310/* Work around a bug in Solaris 9 and 10: AT_FDCWD is positive.  Its
311   value exceeds INT_MAX, so its use as an int doesn't conform to the
312   C standard, and GCC and Sun C complain in some cases.  If the bug
313   is present, undef AT_FDCWD here, so it can be redefined below.  */
314#if 0 < AT_FDCWD && AT_FDCWD == 0xffd19553
315# undef AT_FDCWD
316#endif
317
318/* Use the same bit pattern as Solaris 9, but with the proper
319   signedness.  The bit pattern is important, in case this actually is
320   Solaris with the above workaround.  */
321#ifndef AT_FDCWD
322# define AT_FDCWD (-3041965)
323#endif
324
325/* Use the same values as Solaris 9.  This shouldn't matter, but
326   there's no real reason to differ.  */
327#ifndef AT_SYMLINK_NOFOLLOW
328# define AT_SYMLINK_NOFOLLOW 4096
329#endif
330
331#ifndef AT_REMOVEDIR
332# define AT_REMOVEDIR 1
333#endif
334
335/* Solaris 9 lacks these two, so just pick unique values.  */
336#ifndef AT_SYMLINK_FOLLOW
337# define AT_SYMLINK_FOLLOW 2
338#endif
339
340#ifndef AT_EACCESS
341# define AT_EACCESS 4
342#endif
343
344
345#endif /* _@GUARD_PREFIX@_FCNTL_H */
346#endif /* _@GUARD_PREFIX@_FCNTL_H */
347#endif
348