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
