| 1 | /* Like <fcntl.h>, but with non-working flags defined to 0. |
| 2 | |
| 3 | Copyright (C) 2006-2020 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 <https://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 | /* Native Windows platforms declare open(), creat() in <io.h>. */ |
| 43 | #if (@GNULIB_CREAT@ || @GNULIB_OPEN@ || defined GNULIB_POSIXCHECK) \ |
| 44 | && (defined _WIN32 && ! defined __CYGWIN__) |
| 45 | # include <io.h> |
| 46 | #endif |
| 47 | |
| 48 | #else |
| 49 | /* Normal invocation convention. */ |
| 50 | |
| 51 | #ifndef _@GUARD_PREFIX@_FCNTL_H |
| 52 | |
| 53 | /* Needed before <sys/stat.h>. |
| 54 | May also define off_t to a 64-bit type on native Windows. */ |
| 55 | #include <sys/types.h> |
| 56 | /* On some systems other than glibc, <sys/stat.h> is a prerequisite of |
| 57 | <fcntl.h>. On glibc systems, we would like to avoid namespace pollution. |
| 58 | But on glibc systems, <fcntl.h> includes <sys/stat.h> inside an |
| 59 | extern "C" { ... } block, which leads to errors in C++ mode with the |
| 60 | overridden <sys/stat.h> from gnulib. These errors are known to be gone |
| 61 | with g++ version >= 4.3. */ |
| 62 | #if !(defined __GLIBC__ || defined __UCLIBC__) || (defined __cplusplus && defined GNULIB_NAMESPACE && (defined __ICC || !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)))) |
| 63 | # include <sys/stat.h> |
| 64 | #endif |
| 65 | /* The include_next requires a split double-inclusion guard. */ |
| 66 | #@INCLUDE_NEXT@ @NEXT_FCNTL_H@ |
| 67 | |
| 68 | /* Native Windows platforms declare open(), creat() in <io.h>. */ |
| 69 | #if (@GNULIB_CREAT@ || @GNULIB_OPEN@ || defined GNULIB_POSIXCHECK) \ |
| 70 | && (defined _WIN32 && ! defined __CYGWIN__) |
| 71 | # include <io.h> |
| 72 | #endif |
| 73 | |
| 74 | #ifndef _@GUARD_PREFIX@_FCNTL_H |
| 75 | #define _@GUARD_PREFIX@_FCNTL_H |
| 76 | |
| 77 | #ifndef __GLIBC__ /* Avoid namespace pollution on glibc systems. */ |
| 78 | # include <unistd.h> |
| 79 | #endif |
| 80 | |
| 81 | |
| 82 | /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */ |
| 83 | |
| 84 | /* The definition of _GL_ARG_NONNULL is copied here. */ |
| 85 | |
| 86 | /* The definition of _GL_WARN_ON_USE is copied here. */ |
| 87 | |
| 88 | |
| 89 | /* Declare overridden functions. */ |
| 90 | |
| 91 | #if @GNULIB_CREAT@ |
| 92 | # if @REPLACE_CREAT@ |
| 93 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) |
| 94 | # undef creat |
| 95 | # define creat rpl_creat |
| 96 | # endif |
| 97 | _GL_FUNCDECL_RPL (creat, int, (const char *filename, mode_t mode) |
| 98 | _GL_ARG_NONNULL ((1))); |
| 99 | _GL_CXXALIAS_RPL (creat, int, (const char *filename, mode_t mode)); |
| 100 | # else |
| 101 | _GL_CXXALIAS_SYS (creat, int, (const char *filename, mode_t mode)); |
| 102 | # endif |
| 103 | _GL_CXXALIASWARN (creat); |
| 104 | #elif defined GNULIB_POSIXCHECK |
| 105 | # undef creat |
| 106 | /* Assume creat is always declared. */ |
| 107 | _GL_WARN_ON_USE (creat, "creat is not always POSIX compliant - " |
| 108 | "use gnulib module creat for portability"); |
| 109 | #endif |
| 110 | |
| 111 | #if @GNULIB_FCNTL@ |
| 112 | # if @REPLACE_FCNTL@ |
| 113 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) |
| 114 | # undef fcntl |
| 115 | # define fcntl rpl_fcntl |
| 116 | # endif |
| 117 | _GL_FUNCDECL_RPL (fcntl, int, (int fd, int action, ...)); |
| 118 | _GL_CXXALIAS_RPL (fcntl, int, (int fd, int action, ...)); |
| 119 | # else |
| 120 | # if !@HAVE_FCNTL@ |
| 121 | _GL_FUNCDECL_SYS (fcntl, int, (int fd, int action, ...)); |
| 122 | # endif |
| 123 | _GL_CXXALIAS_SYS (fcntl, int, (int fd, int action, ...)); |
| 124 | # endif |
| 125 | _GL_CXXALIASWARN (fcntl); |
| 126 | #elif defined GNULIB_POSIXCHECK |
| 127 | # undef fcntl |
| 128 | # if HAVE_RAW_DECL_FCNTL |
| 129 | _GL_WARN_ON_USE (fcntl, "fcntl is not always POSIX compliant - " |
| 130 | "use gnulib module fcntl for portability"); |
| 131 | # endif |
| 132 | #endif |
| 133 | |
| 134 | #if @GNULIB_OPEN@ |
| 135 | # if @REPLACE_OPEN@ |
| 136 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) |
| 137 | # undef open |
| 138 | # define open rpl_open |
| 139 | # endif |
| 140 | _GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...) |
| 141 | _GL_ARG_NONNULL ((1))); |
| 142 | _GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...)); |
| 143 | # else |
| 144 | _GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...)); |
| 145 | # endif |
| 146 | /* On HP-UX 11, in C++ mode, open() is defined as an inline function with a |
| 147 | default argument. _GL_CXXALIASWARN does not work in this case. */ |
| 148 | # if !defined __hpux |
| 149 | _GL_CXXALIASWARN (open); |
| 150 | # endif |
| 151 | #elif defined GNULIB_POSIXCHECK |
| 152 | # undef open |
| 153 | /* Assume open is always declared. */ |
| 154 | _GL_WARN_ON_USE (open, "open is not always POSIX compliant - " |
| 155 | "use gnulib module open for portability"); |
| 156 | #endif |
| 157 | |
| 158 | #if @GNULIB_OPENAT@ |
| 159 | # if @REPLACE_OPENAT@ |
| 160 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) |
| 161 | # undef openat |
| 162 | # define openat rpl_openat |
| 163 | # endif |
| 164 | _GL_FUNCDECL_RPL (openat, int, |
| 165 | (int fd, char const *file, int flags, /* mode_t mode */ ...) |
| 166 | _GL_ARG_NONNULL ((2))); |
| 167 | _GL_CXXALIAS_RPL (openat, int, |
| 168 | (int fd, char const *file, int flags, /* mode_t mode */ ...)); |
| 169 | # else |
| 170 | # if !@HAVE_OPENAT@ |
| 171 | _GL_FUNCDECL_SYS (openat, int, |
| 172 | (int fd, char const *file, int flags, /* mode_t mode */ ...) |
| 173 | _GL_ARG_NONNULL ((2))); |
| 174 | # endif |
| 175 | _GL_CXXALIAS_SYS (openat, int, |
| 176 | (int fd, char const *file, int flags, /* mode_t mode */ ...)); |
| 177 | # endif |
| 178 | _GL_CXXALIASWARN (openat); |
| 179 | #elif defined GNULIB_POSIXCHECK |
| 180 | # undef openat |
| 181 | # if HAVE_RAW_DECL_OPENAT |
| 182 | _GL_WARN_ON_USE (openat, "openat is not portable - " |
| 183 | "use gnulib module openat for portability"); |
| 184 | # endif |
| 185 | #endif |
| 186 | |
| 187 | |
| 188 | /* Fix up the FD_* macros, only known to be missing on mingw. */ |
| 189 | |
| 190 | #ifndef FD_CLOEXEC |
| 191 | # define FD_CLOEXEC 1 |
| 192 | #endif |
| 193 | |
| 194 | /* Fix up the supported F_* macros. Intentionally leave other F_* |
| 195 | macros undefined. Only known to be missing on mingw. */ |
| 196 | |
| 197 | #ifndef F_DUPFD_CLOEXEC |
| 198 | # define F_DUPFD_CLOEXEC 0x40000000 |
| 199 | /* Witness variable: 1 if gnulib defined F_DUPFD_CLOEXEC, 0 otherwise. */ |
| 200 | # define GNULIB_defined_F_DUPFD_CLOEXEC 1 |
| 201 | #else |
| 202 | # define GNULIB_defined_F_DUPFD_CLOEXEC 0 |
| 203 | #endif |
| 204 | |
| 205 | #ifndef F_DUPFD |
| 206 | # define F_DUPFD 1 |
| 207 | #endif |
| 208 | |
| 209 | #ifndef F_GETFD |
| 210 | # define F_GETFD 2 |
| 211 | #endif |
| 212 | |
| 213 | /* Fix up the O_* macros. */ |
| 214 | |
| 215 | /* AIX 7.1 with XL C 12.1 defines O_CLOEXEC, O_NOFOLLOW, and O_TTY_INIT |
| 216 | to values outside 'int' range, so omit these misdefinitions. |
| 217 | But avoid namespace pollution on non-AIX systems. */ |
| 218 | #ifdef _AIX |
| 219 | # include <limits.h> |
| 220 | # if defined O_CLOEXEC && ! (INT_MIN <= O_CLOEXEC && O_CLOEXEC <= INT_MAX) |
| 221 | # undef O_CLOEXEC |
| 222 | # endif |
| 223 | # if defined O_NOFOLLOW && ! (INT_MIN <= O_NOFOLLOW && O_NOFOLLOW <= INT_MAX) |
| 224 | # undef O_NOFOLLOW |
| 225 | # endif |
| 226 | # if defined O_TTY_INIT && ! (INT_MIN <= O_TTY_INIT && O_TTY_INIT <= INT_MAX) |
| 227 | # undef O_TTY_INIT |
| 228 | # endif |
| 229 | #endif |
| 230 | |
| 231 | #if !defined O_DIRECT && defined O_DIRECTIO |
| 232 | /* Tru64 spells it 'O_DIRECTIO'. */ |
| 233 | # define O_DIRECT O_DIRECTIO |
| 234 | #endif |
| 235 | |
| 236 | #if !defined O_CLOEXEC && defined O_NOINHERIT |
| 237 | /* Mingw spells it 'O_NOINHERIT'. */ |
| 238 | # define O_CLOEXEC O_NOINHERIT |
| 239 | #endif |
| 240 | |
| 241 | #ifndef O_CLOEXEC |
| 242 | # define O_CLOEXEC 0x40000000 /* Try to not collide with system O_* flags. */ |
| 243 | # define GNULIB_defined_O_CLOEXEC 1 |
| 244 | #else |
| 245 | # define GNULIB_defined_O_CLOEXEC 0 |
| 246 | #endif |
| 247 | |
| 248 | #ifndef O_DIRECT |
| 249 | # define O_DIRECT 0 |
| 250 | #endif |
| 251 | |
| 252 | #ifndef O_DIRECTORY |
| 253 | # define O_DIRECTORY 0 |
| 254 | #endif |
| 255 | |
| 256 | #ifndef O_DSYNC |
| 257 | # define O_DSYNC 0 |
| 258 | #endif |
| 259 | |
| 260 | #ifndef O_EXEC |
| 261 | # define O_EXEC O_RDONLY /* This is often close enough in older systems. */ |
| 262 | #endif |
| 263 | |
| 264 | #ifndef O_IGNORE_CTTY |
| 265 | # define O_IGNORE_CTTY 0 |
| 266 | #endif |
| 267 | |
| 268 | #ifndef O_NDELAY |
| 269 | # define O_NDELAY 0 |
| 270 | #endif |
| 271 | |
| 272 | #ifndef O_NOATIME |
| 273 | # define O_NOATIME 0 |
| 274 | #endif |
| 275 | |
| 276 | #ifndef O_NONBLOCK |
| 277 | # define O_NONBLOCK O_NDELAY |
| 278 | #endif |
| 279 | |
| 280 | /* If the gnulib module 'nonblocking' is in use, guarantee a working non-zero |
| 281 | value of O_NONBLOCK. Otherwise, O_NONBLOCK is defined (above) to O_NDELAY |
| 282 | or to 0 as fallback. */ |
| 283 | #if @GNULIB_NONBLOCKING@ |
| 284 | # if O_NONBLOCK |
| 285 | # define GNULIB_defined_O_NONBLOCK 0 |
| 286 | # else |
| 287 | # define GNULIB_defined_O_NONBLOCK 1 |
| 288 | # undef O_NONBLOCK |
| 289 | # define O_NONBLOCK 0x40000000 |
| 290 | # endif |
| 291 | #endif |
| 292 | |
| 293 | #ifndef O_NOCTTY |
| 294 | # define O_NOCTTY 0 |
| 295 | #endif |
| 296 | |
| 297 | #ifndef O_NOFOLLOW |
| 298 | # define O_NOFOLLOW 0 |
| 299 | #endif |
| 300 | |
| 301 | #ifndef O_NOLINK |
| 302 | # define O_NOLINK 0 |
| 303 | #endif |
| 304 | |
| 305 | #ifndef O_NOLINKS |
| 306 | # define O_NOLINKS 0 |
| 307 | #endif |
| 308 | |
| 309 | #ifndef O_NOTRANS |
| 310 | # define O_NOTRANS 0 |
| 311 | #endif |
| 312 | |
| 313 | #ifndef O_RSYNC |
| 314 | # define O_RSYNC 0 |
| 315 | #endif |
| 316 | |
| 317 | #ifndef O_SEARCH |
| 318 | # define O_SEARCH O_RDONLY /* This is often close enough in older systems. */ |
| 319 | #endif |
| 320 | |
| 321 | #ifndef O_SYNC |
| 322 | # define O_SYNC 0 |
| 323 | #endif |
| 324 | |
| 325 | #ifndef O_TTY_INIT |
| 326 | # define O_TTY_INIT 0 |
| 327 | #endif |
| 328 | |
| 329 | #if ~O_ACCMODE & (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH) |
| 330 | # undef O_ACCMODE |
| 331 | # define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH) |
| 332 | #endif |
| 333 | |
| 334 | /* For systems that distinguish between text and binary I/O. |
| 335 | O_BINARY is usually declared in fcntl.h */ |
| 336 | #if !defined O_BINARY && defined _O_BINARY |
| 337 | /* For MSC-compatible compilers. */ |
| 338 | # define O_BINARY _O_BINARY |
| 339 | # define O_TEXT _O_TEXT |
| 340 | #endif |
| 341 | |
| 342 | #if defined __BEOS__ || defined __HAIKU__ |
| 343 | /* BeOS 5 and Haiku have O_BINARY and O_TEXT, but they have no effect. */ |
| 344 | # undef O_BINARY |
| 345 | # undef O_TEXT |
| 346 | #endif |
| 347 | |
| 348 | #ifndef O_BINARY |
| 349 | # define O_BINARY 0 |
| 350 | # define O_TEXT 0 |
| 351 | #endif |
| 352 | |
| 353 | /* Fix up the AT_* macros. */ |
| 354 | |
| 355 | /* Work around a bug in Solaris 9 and 10: AT_FDCWD is positive. Its |
| 356 | value exceeds INT_MAX, so its use as an int doesn't conform to the |
| 357 | C standard, and GCC and Sun C complain in some cases. If the bug |
| 358 | is present, undef AT_FDCWD here, so it can be redefined below. */ |
| 359 | #if 0 < AT_FDCWD && AT_FDCWD == 0xffd19553 |
| 360 | # undef AT_FDCWD |
| 361 | #endif |
| 362 | |
| 363 | /* Use the same bit pattern as Solaris 9, but with the proper |
| 364 | signedness. The bit pattern is important, in case this actually is |
| 365 | Solaris with the above workaround. */ |
| 366 | #ifndef AT_FDCWD |
| 367 | # define AT_FDCWD (-3041965) |
| 368 | #endif |
| 369 | |
| 370 | /* Use the same values as Solaris 9. This shouldn't matter, but |
| 371 | there's no real reason to differ. */ |
| 372 | #ifndef AT_SYMLINK_NOFOLLOW |
| 373 | # define AT_SYMLINK_NOFOLLOW 4096 |
| 374 | #endif |
| 375 | |
| 376 | #ifndef AT_REMOVEDIR |
| 377 | # define AT_REMOVEDIR 1 |
| 378 | #endif |
| 379 | |
| 380 | /* Solaris 9 lacks these two, so just pick unique values. */ |
| 381 | #ifndef AT_SYMLINK_FOLLOW |
| 382 | # define AT_SYMLINK_FOLLOW 2 |
| 383 | #endif |
| 384 | |
| 385 | #ifndef AT_EACCESS |
| 386 | # define AT_EACCESS 4 |
| 387 | #endif |
| 388 | |
| 389 | |
| 390 | #endif /* _@GUARD_PREFIX@_FCNTL_H */ |
| 391 | #endif /* _@GUARD_PREFIX@_FCNTL_H */ |
| 392 | #endif |