1 /* Like <fcntl.h>, but with non-working flags defined to 0. 2 3 Copyright (C) 2006-2017 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 Lesser 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 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 <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 && (defined __ICC || !(__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 && (defined __ICC || !(__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 /* AIX 7.1 with XL C 12.1 defines O_CLOEXEC, O_NOFOLLOW, and O_TTY_INIT 190 to values outside 'int' range, so omit these misdefinitions. 191 But avoid namespace pollution on non-AIX systems. */ 192 #ifdef _AIX 193 # include <limits.h> 194 # if defined O_CLOEXEC && ! (INT_MIN <= O_CLOEXEC && O_CLOEXEC <= INT_MAX) 195 # undef O_CLOEXEC 196 # endif 197 # if defined O_NOFOLLOW && ! (INT_MIN <= O_NOFOLLOW && O_NOFOLLOW <= INT_MAX) 198 # undef O_NOFOLLOW 199 # endif 200 # if defined O_TTY_INIT && ! (INT_MIN <= O_TTY_INIT && O_TTY_INIT <= INT_MAX) 201 # undef O_TTY_INIT 202 # endif 203 #endif 204 205 #if !defined O_DIRECT && defined O_DIRECTIO 206 /* Tru64 spells it 'O_DIRECTIO'. */ 207 # define O_DIRECT O_DIRECTIO 208 #endif 209 210 #if !defined O_CLOEXEC && defined O_NOINHERIT 211 /* Mingw spells it 'O_NOINHERIT'. */ 212 # define O_CLOEXEC O_NOINHERIT 213 #endif 214 215 #ifndef O_CLOEXEC 216 # define O_CLOEXEC 0 217 #endif 218 219 #ifndef O_DIRECT 220 # define O_DIRECT 0 221 #endif 222 223 #ifndef O_DIRECTORY 224 # define O_DIRECTORY 0 225 #endif 226 227 #ifndef O_DSYNC 228 # define O_DSYNC 0 229 #endif 230 231 #ifndef O_EXEC 232 # define O_EXEC O_RDONLY /* This is often close enough in older systems. */ 233 #endif 234 235 #ifndef O_IGNORE_CTTY 236 # define O_IGNORE_CTTY 0 237 #endif 238 239 #ifndef O_NDELAY 240 # define O_NDELAY 0 241 #endif 242 243 #ifndef O_NOATIME 244 # define O_NOATIME 0 245 #endif 246 247 #ifndef O_NONBLOCK 248 # define O_NONBLOCK O_NDELAY 249 #endif 250 251 /* If the gnulib module 'nonblocking' is in use, guarantee a working non-zero 252 value of O_NONBLOCK. Otherwise, O_NONBLOCK is defined (above) to O_NDELAY 253 or to 0 as fallback. */ 254 #if @GNULIB_NONBLOCKING@ 255 # if O_NONBLOCK 256 # define GNULIB_defined_O_NONBLOCK 0 257 # else 258 # define GNULIB_defined_O_NONBLOCK 1 259 # undef O_NONBLOCK 260 # define O_NONBLOCK 0x40000000 261 # endif 262 #endif 263 264 #ifndef O_NOCTTY 265 # define O_NOCTTY 0 266 #endif 267 268 #ifndef O_NOFOLLOW 269 # define O_NOFOLLOW 0 270 #endif 271 272 #ifndef O_NOLINK 273 # define O_NOLINK 0 274 #endif 275 276 #ifndef O_NOLINKS 277 # define O_NOLINKS 0 278 #endif 279 280 #ifndef O_NOTRANS 281 # define O_NOTRANS 0 282 #endif 283 284 #ifndef O_RSYNC 285 # define O_RSYNC 0 286 #endif 287 288 #ifndef O_SEARCH 289 # define O_SEARCH O_RDONLY /* This is often close enough in older systems. */ 290 #endif 291 292 #ifndef O_SYNC 293 # define O_SYNC 0 294 #endif 295 296 #ifndef O_TTY_INIT 297 # define O_TTY_INIT 0 298 #endif 299 300 #if ~O_ACCMODE & (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH) 301 # undef O_ACCMODE 302 # define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH) 303 #endif 304 305 /* For systems that distinguish between text and binary I/O. 306 O_BINARY is usually declared in fcntl.h */ 307 #if !defined O_BINARY && defined _O_BINARY 308 /* For MSC-compatible compilers. */ 309 # define O_BINARY _O_BINARY 310 # define O_TEXT _O_TEXT 311 #endif 312 313 #if defined __BEOS__ || defined __HAIKU__ 314 /* BeOS 5 and Haiku have O_BINARY and O_TEXT, but they have no effect. */ 315 # undef O_BINARY 316 # undef O_TEXT 317 #endif 318 319 #ifndef O_BINARY 320 # define O_BINARY 0 321 # define O_TEXT 0 322 #endif 323 324 /* Fix up the AT_* macros. */ 325 326 /* Work around a bug in Solaris 9 and 10: AT_FDCWD is positive. Its 327 value exceeds INT_MAX, so its use as an int doesn't conform to the 328 C standard, and GCC and Sun C complain in some cases. If the bug 329 is present, undef AT_FDCWD here, so it can be redefined below. */ 330 #if 0 < AT_FDCWD && AT_FDCWD == 0xffd19553 331 # undef AT_FDCWD 332 #endif 333 334 /* Use the same bit pattern as Solaris 9, but with the proper 335 signedness. The bit pattern is important, in case this actually is 336 Solaris with the above workaround. */ 337 #ifndef AT_FDCWD 338 # define AT_FDCWD (-3041965) 339 #endif 340 341 /* Use the same values as Solaris 9. This shouldn't matter, but 342 there's no real reason to differ. */ 343 #ifndef AT_SYMLINK_NOFOLLOW 344 # define AT_SYMLINK_NOFOLLOW 4096 345 #endif 346 347 #ifndef AT_REMOVEDIR 348 # define AT_REMOVEDIR 1 349 #endif 350 351 /* Solaris 9 lacks these two, so just pick unique values. */ 352 #ifndef AT_SYMLINK_FOLLOW 353 # define AT_SYMLINK_FOLLOW 2 354 #endif 355 356 #ifndef AT_EACCESS 357 # define AT_EACCESS 4 358 #endif 359 360 361 #endif /* _@GUARD_PREFIX@_FCNTL_H */ 362 #endif /* _@GUARD_PREFIX@_FCNTL_H */ 363 #endif 364