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 0x40000000 /* Try to not collide with system O_* flags. */ 217 # define GNULIB_defined_O_CLOEXEC 1 218 #else 219 # define GNULIB_defined_O_CLOEXEC 0 220 #endif 221 222 #ifndef O_DIRECT 223 # define O_DIRECT 0 224 #endif 225 226 #ifndef O_DIRECTORY 227 # define O_DIRECTORY 0 228 #endif 229 230 #ifndef O_DSYNC 231 # define O_DSYNC 0 232 #endif 233 234 #ifndef O_EXEC 235 # define O_EXEC O_RDONLY /* This is often close enough in older systems. */ 236 #endif 237 238 #ifndef O_IGNORE_CTTY 239 # define O_IGNORE_CTTY 0 240 #endif 241 242 #ifndef O_NDELAY 243 # define O_NDELAY 0 244 #endif 245 246 #ifndef O_NOATIME 247 # define O_NOATIME 0 248 #endif 249 250 #ifndef O_NONBLOCK 251 # define O_NONBLOCK O_NDELAY 252 #endif 253 254 /* If the gnulib module 'nonblocking' is in use, guarantee a working non-zero 255 value of O_NONBLOCK. Otherwise, O_NONBLOCK is defined (above) to O_NDELAY 256 or to 0 as fallback. */ 257 #if @GNULIB_NONBLOCKING@ 258 # if O_NONBLOCK 259 # define GNULIB_defined_O_NONBLOCK 0 260 # else 261 # define GNULIB_defined_O_NONBLOCK 1 262 # undef O_NONBLOCK 263 # define O_NONBLOCK 0x40000000 264 # endif 265 #endif 266 267 #ifndef O_NOCTTY 268 # define O_NOCTTY 0 269 #endif 270 271 #ifndef O_NOFOLLOW 272 # define O_NOFOLLOW 0 273 #endif 274 275 #ifndef O_NOLINK 276 # define O_NOLINK 0 277 #endif 278 279 #ifndef O_NOLINKS 280 # define O_NOLINKS 0 281 #endif 282 283 #ifndef O_NOTRANS 284 # define O_NOTRANS 0 285 #endif 286 287 #ifndef O_RSYNC 288 # define O_RSYNC 0 289 #endif 290 291 #ifndef O_SEARCH 292 # define O_SEARCH O_RDONLY /* This is often close enough in older systems. */ 293 #endif 294 295 #ifndef O_SYNC 296 # define O_SYNC 0 297 #endif 298 299 #ifndef O_TTY_INIT 300 # define O_TTY_INIT 0 301 #endif 302 303 #if ~O_ACCMODE & (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH) 304 # undef O_ACCMODE 305 # define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH) 306 #endif 307 308 /* For systems that distinguish between text and binary I/O. 309 O_BINARY is usually declared in fcntl.h */ 310 #if !defined O_BINARY && defined _O_BINARY 311 /* For MSC-compatible compilers. */ 312 # define O_BINARY _O_BINARY 313 # define O_TEXT _O_TEXT 314 #endif 315 316 #if defined __BEOS__ || defined __HAIKU__ 317 /* BeOS 5 and Haiku have O_BINARY and O_TEXT, but they have no effect. */ 318 # undef O_BINARY 319 # undef O_TEXT 320 #endif 321 322 #ifndef O_BINARY 323 # define O_BINARY 0 324 # define O_TEXT 0 325 #endif 326 327 /* Fix up the AT_* macros. */ 328 329 /* Work around a bug in Solaris 9 and 10: AT_FDCWD is positive. Its 330 value exceeds INT_MAX, so its use as an int doesn't conform to the 331 C standard, and GCC and Sun C complain in some cases. If the bug 332 is present, undef AT_FDCWD here, so it can be redefined below. */ 333 #if 0 < AT_FDCWD && AT_FDCWD == 0xffd19553 334 # undef AT_FDCWD 335 #endif 336 337 /* Use the same bit pattern as Solaris 9, but with the proper 338 signedness. The bit pattern is important, in case this actually is 339 Solaris with the above workaround. */ 340 #ifndef AT_FDCWD 341 # define AT_FDCWD (-3041965) 342 #endif 343 344 /* Use the same values as Solaris 9. This shouldn't matter, but 345 there's no real reason to differ. */ 346 #ifndef AT_SYMLINK_NOFOLLOW 347 # define AT_SYMLINK_NOFOLLOW 4096 348 #endif 349 350 #ifndef AT_REMOVEDIR 351 # define AT_REMOVEDIR 1 352 #endif 353 354 /* Solaris 9 lacks these two, so just pick unique values. */ 355 #ifndef AT_SYMLINK_FOLLOW 356 # define AT_SYMLINK_FOLLOW 2 357 #endif 358 359 #ifndef AT_EACCESS 360 # define AT_EACCESS 4 361 #endif 362 363 364 #endif /* _@GUARD_PREFIX@_FCNTL_H */ 365 #endif /* _@GUARD_PREFIX@_FCNTL_H */ 366 #endif 367