1 /* Like <fcntl.h>, but with non-working flags defined to 0.
3 Copyright (C) 2006-2010 Free Software Foundation, Inc.
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.
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.
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/>. */
18 /* written by Paul Eggert */
21 @PRAGMA_SYSTEM_HEADER@
25 #if defined __need_system_fcntl_h
26 /* Special invocation convention. */
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>
38 #@INCLUDE_NEXT@ @NEXT_FCNTL_H@
41 /* Normal invocation convention. */
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>
55 /* The include_next requires a split double-inclusion guard. */
56 #@INCLUDE_NEXT@ @NEXT_FCNTL_H@
61 #ifndef __GLIBC__ /* Avoid namespace pollution on glibc systems. */
66 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
68 /* The definition of _GL_ARG_NONNULL is copied here. */
70 /* The definition of _GL_WARN_ON_USE is copied here. */
73 /* Declare overridden functions. */
77 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
79 # define fcntl rpl_fcntl
81 _GL_FUNCDECL_RPL (fcntl, int, (int fd, int action, ...));
82 _GL_CXXALIAS_RPL (fcntl, int, (int fd, int action, ...));
85 _GL_FUNCDECL_SYS (fcntl, int, (int fd, int action, ...));
87 _GL_CXXALIAS_SYS (fcntl, int, (int fd, int action, ...));
89 _GL_CXXALIASWARN (fcntl);
90 #elif defined GNULIB_POSIXCHECK
92 # if HAVE_RAW_DECL_FCNTL
93 _GL_WARN_ON_USE (fcntl, "fcntl is not always POSIX compliant - "
94 "use gnulib module fcntl for portability");
100 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
102 # define open rpl_open
104 _GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...)
105 _GL_ARG_NONNULL ((1)));
106 _GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...));
108 _GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
110 _GL_CXXALIASWARN (open);
111 #elif defined GNULIB_POSIXCHECK
113 /* Assume open is always declared. */
114 _GL_WARN_ON_USE (open, "open is not always POSIX compliant - "
115 "use gnulib module open for portability");
119 # if @REPLACE_OPENAT@
120 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
122 # define openat rpl_openat
124 _GL_FUNCDECL_RPL (openat, int,
125 (int fd, char const *file, int flags, /* mode_t mode */ ...)
126 _GL_ARG_NONNULL ((2)));
127 _GL_CXXALIAS_RPL (openat, int,
128 (int fd, char const *file, int flags, /* mode_t mode */ ...));
131 _GL_FUNCDECL_SYS (openat, int,
132 (int fd, char const *file, int flags, /* mode_t mode */ ...)
133 _GL_ARG_NONNULL ((2)));
135 _GL_CXXALIAS_SYS (openat, int,
136 (int fd, char const *file, int flags, /* mode_t mode */ ...));
138 _GL_CXXALIASWARN (openat);
139 #elif defined GNULIB_POSIXCHECK
141 # if HAVE_RAW_DECL_OPENAT
142 _GL_WARN_ON_USE (openat, "openat is not portable - "
143 "use gnulib module openat for portability");
148 /* Fix up the FD_* macros, only known to be missing on mingw. */
151 # define FD_CLOEXEC 1
154 /* Fix up the supported F_* macros. Intentionally leave other F_*
155 macros undefined. Only known to be missing on mingw. */
157 #ifndef F_DUPFD_CLOEXEC
158 # define F_DUPFD_CLOEXEC 0x40000000
159 /* Witness variable: 1 if gnulib defined F_DUPFD_CLOEXEC, 0 otherwise. */
160 # define GNULIB_defined_F_DUPFD_CLOEXEC 1
162 # define GNULIB_defined_F_DUPFD_CLOEXEC 0
173 /* Fix up the O_* macros. */
175 #if !defined O_DIRECT && defined O_DIRECTIO
176 /* Tru64 spells it `O_DIRECTIO'. */
177 # define O_DIRECT O_DIRECTIO
180 #if !defined O_CLOEXEC && defined O_NOINHERIT
181 /* Mingw spells it `O_NOINHERIT'. Intentionally leave it
182 undefined if not available. */
183 # define O_CLOEXEC O_NOINHERIT
195 # define O_DIRECTORY 0
203 # define O_EXEC O_RDONLY /* This is often close enough in older systems. */
215 # define O_NONBLOCK O_NDELAY
223 # define O_NOFOLLOW 0
235 # define O_SEARCH O_RDONLY /* This is often close enough in older systems. */
243 # define O_TTY_INIT 0
246 /* For systems that distinguish between text and binary I/O.
247 O_BINARY is usually declared in fcntl.h */
248 #if !defined O_BINARY && defined _O_BINARY
249 /* For MSC-compatible compilers. */
250 # define O_BINARY _O_BINARY
251 # define O_TEXT _O_TEXT
254 #if defined __BEOS__ || defined __HAIKU__
255 /* BeOS 5 and Haiku have O_BINARY and O_TEXT, but they have no effect. */
265 /* Fix up the AT_* macros. */
267 /* Work around a bug in Solaris 9 and 10: AT_FDCWD is positive. Its
268 value exceeds INT_MAX, so its use as an int doesn't conform to the
269 C standard, and GCC and Sun C complain in some cases. If the bug
270 is present, undef AT_FDCWD here, so it can be redefined below. */
271 #if 0 < AT_FDCWD && AT_FDCWD == 0xffd19553
275 /* Use the same bit pattern as Solaris 9, but with the proper
276 signedness. The bit pattern is important, in case this actually is
277 Solaris with the above workaround. */
279 # define AT_FDCWD (-3041965)
282 /* Use the same values as Solaris 9. This shouldn't matter, but
283 there's no real reason to differ. */
284 #ifndef AT_SYMLINK_NOFOLLOW
285 # define AT_SYMLINK_NOFOLLOW 4096
289 # define AT_REMOVEDIR 1
292 /* Solaris 9 lacks these two, so just pick unique values. */
293 #ifndef AT_SYMLINK_FOLLOW
294 # define AT_SYMLINK_FOLLOW 2
298 # define AT_EACCESS 4
302 #endif /* _GL_FCNTL_H */
303 #endif /* _GL_FCNTL_H */