gl/fcntl.in.h

   1 /* Like <fcntl.h>, but with non-working flags defined to 0.
   2
   3    Copyright (C) 2006-2010 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
  24 #if defined __need_system_fcntl_h
  25 /* Special invocation convention.  */
  26
  27 #include <sys/types.h>
  28 #ifndef __GLIBC__ /* Avoid namespace pollution on glibc systems.  */
  29 # include <sys/stat.h>
  30 #endif
  31 #@INCLUDE_NEXT@ @NEXT_FCNTL_H@
  32
  33 #else
  34 /* Normal invocation convention.  */
  35
  36 #ifndef _GL_FCNTL_H
  37
  38 #include <sys/types.h>
  39 #ifndef __GLIBC__ /* Avoid namespace pollution on glibc systems.  */
  40 # include <sys/stat.h>
  41 #endif
  42 /* The include_next requires a split double-inclusion guard.  */
  43 #@INCLUDE_NEXT@ @NEXT_FCNTL_H@
  44
  45 #ifndef _GL_FCNTL_H
  46 #define _GL_FCNTL_H
  47
  48 #ifndef __GLIBC__ /* Avoid namespace pollution on glibc systems.  */
  49 # include <unistd.h>
  50 #endif
  51
  52
  53 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
  54
  55 /* The definition of _GL_ARG_NONNULL is copied here.  */
  56
  57 /* The definition of _GL_WARN_ON_USE is copied here.  */
  58
  59
  60 /* Declare overridden functions.  */
  61
  62 #if @GNULIB_FCNTL@
  63 # if @REPLACE_FCNTL@
  64 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
  65 #   undef fcntl
  66 #   define fcntl rpl_fcntl
  67 #  endif
  68 _GL_FUNCDECL_RPL (fcntl, int, (int fd, int action, ...));
  69 _GL_CXXALIAS_RPL (fcntl, int, (int fd, int action, ...));
  70 # else
  71 #  if !@HAVE_FCNTL@
  72 _GL_FUNCDECL_SYS (fcntl, int, (int fd, int action, ...));
  73 #  endif
  74 _GL_CXXALIAS_SYS (fcntl, int, (int fd, int action, ...));
  75 # endif
  76 _GL_CXXALIASWARN (fcntl);
  77 #elif defined GNULIB_POSIXCHECK
  78 # undef fcntl
  79 # if HAVE_RAW_DECL_FCNTL
  80 _GL_WARN_ON_USE (fcntl, "fcntl is not always POSIX compliant - "
  81                  "use gnulib module fcntl for portability");
  82 # endif
  83 #endif
  84
  85 #if @GNULIB_OPEN@
  86 # if @REPLACE_OPEN@
  87 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
  88 #   undef open
  89 #   define open rpl_open
  90 #  endif
  91 _GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...)
  92                              _GL_ARG_NONNULL ((1)));
  93 _GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...));
  94 # else
  95 _GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
  96 # endif
  97 _GL_CXXALIASWARN (open);
  98 #elif defined GNULIB_POSIXCHECK
  99 # undef open
 100 /* Assume open is always declared.  */
 101 _GL_WARN_ON_USE (open, "open is not always POSIX compliant - "
 102                  "use gnulib module open for portability");
 103 #endif
 104
 105 #if @GNULIB_OPENAT@
 106 # if @REPLACE_OPENAT@
 107 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 108 #   undef openat
 109 #   define openat rpl_openat
 110 #  endif
 111 _GL_FUNCDECL_RPL (openat, int,
 112                   (int fd, char const *file, int flags, /* mode_t mode */ ...)
 113                   _GL_ARG_NONNULL ((2)));
 114 _GL_CXXALIAS_RPL (openat, int,
 115                   (int fd, char const *file, int flags, /* mode_t mode */ ...));
 116 # else
 117 #  if !@HAVE_OPENAT@
 118 _GL_FUNCDECL_SYS (openat, int,
 119                   (int fd, char const *file, int flags, /* mode_t mode */ ...)
 120                   _GL_ARG_NONNULL ((2)));
 121 #  endif
 122 _GL_CXXALIAS_SYS (openat, int,
 123                   (int fd, char const *file, int flags, /* mode_t mode */ ...));
 124 # endif
 125 _GL_CXXALIASWARN (openat);
 126 #elif defined GNULIB_POSIXCHECK
 127 # undef openat
 128 # if HAVE_RAW_DECL_OPENAT
 129 _GL_WARN_ON_USE (openat, "openat is not portable - "
 130                  "use gnulib module openat for portability");
 131 # endif
 132 #endif
 133
 134
 135 /* Fix up the FD_* macros, only known to be missing on mingw.  */
 136
 137 #ifndef FD_CLOEXEC
 138 # define FD_CLOEXEC 1
 139 #endif
 140
 141 /* Fix up the supported F_* macros.  Intentionally leave other F_*
 142    macros undefined.  Only known to be missing on mingw.  */
 143
 144 #ifndef F_DUPFD_CLOEXEC
 145 # define F_DUPFD_CLOEXEC 0x40000000
 146 /* Witness variable: 1 if gnulib defined F_DUPFD_CLOEXEC, 0 otherwise.  */
 147 # define GNULIB_defined_F_DUPFD_CLOEXEC 1
 148 #else
 149 # define GNULIB_defined_F_DUPFD_CLOEXEC 0
 150 #endif
 151
 152 #ifndef F_DUPFD
 153 # define F_DUPFD 1
 154 #endif
 155
 156 #ifndef F_GETFD
 157 # define F_GETFD 2
 158 #endif
 159
 160 /* Fix up the O_* macros.  */
 161
 162 #if !defined O_DIRECT && defined O_DIRECTIO
 163 /* Tru64 spells it `O_DIRECTIO'.  */
 164 # define O_DIRECT O_DIRECTIO
 165 #endif
 166
 167 #if !defined O_CLOEXEC && defined O_NOINHERIT
 168 /* Mingw spells it `O_NOINHERIT'.  Intentionally leave it
 169    undefined if not available.  */
 170 # define O_CLOEXEC O_NOINHERIT
 171 #endif
 172
 173 #ifndef O_DIRECT
 174 # define O_DIRECT 0
 175 #endif
 176
 177 #ifndef O_DIRECTORY
 178 # define O_DIRECTORY 0
 179 #endif
 180
 181 #ifndef O_DSYNC
 182 # define O_DSYNC 0
 183 #endif
 184
 185 #ifndef O_NDELAY
 186 # define O_NDELAY 0
 187 #endif
 188
 189 #ifndef O_NOATIME
 190 # define O_NOATIME 0
 191 #endif
 192
 193 #ifndef O_NONBLOCK
 194 # define O_NONBLOCK O_NDELAY
 195 #endif
 196
 197 #ifndef O_NOCTTY
 198 # define O_NOCTTY 0
 199 #endif
 200
 201 #ifndef O_NOFOLLOW
 202 # define O_NOFOLLOW 0
 203 #endif
 204
 205 #ifndef O_NOLINKS
 206 # define O_NOLINKS 0
 207 #endif
 208
 209 #ifndef O_RSYNC
 210 # define O_RSYNC 0
 211 #endif
 212
 213 #ifndef O_SYNC
 214 # define O_SYNC 0
 215 #endif
 216
 217 #ifndef O_TTY_INIT
 218 # define O_TTY_INIT 0
 219 #endif
 220
 221 /* For systems that distinguish between text and binary I/O.
 222    O_BINARY is usually declared in fcntl.h  */
 223 #if !defined O_BINARY && defined _O_BINARY
 224   /* For MSC-compatible compilers.  */
 225 # define O_BINARY _O_BINARY
 226 # define O_TEXT _O_TEXT
 227 #endif
 228
 229 #if defined __BEOS__ || defined __HAIKU__
 230   /* BeOS 5 and Haiku have O_BINARY and O_TEXT, but they have no effect.  */
 231 # undef O_BINARY
 232 # undef O_TEXT
 233 #endif
 234
 235 #ifndef O_BINARY
 236 # define O_BINARY 0
 237 # define O_TEXT 0
 238 #endif
 239
 240 /* Fix up the AT_* macros.  */
 241
 242 /* Work around a bug in Solaris 9 and 10: AT_FDCWD is positive.  Its
 243    value exceeds INT_MAX, so its use as an int doesn't conform to the
 244    C standard, and GCC and Sun C complain in some cases.  If the bug
 245    is present, undef AT_FDCWD here, so it can be redefined below.  */
 246 #if 0 < AT_FDCWD && AT_FDCWD == 0xffd19553
 247 # undef AT_FDCWD
 248 #endif
 249
 250 /* Use the same bit pattern as Solaris 9, but with the proper
 251    signedness.  The bit pattern is important, in case this actually is
 252    Solaris with the above workaround.  */
 253 #ifndef AT_FDCWD
 254 # define AT_FDCWD (-3041965)
 255 #endif
 256
 257 /* Use the same values as Solaris 9.  This shouldn't matter, but
 258    there's no real reason to differ.  */
 259 #ifndef AT_SYMLINK_NOFOLLOW
 260 # define AT_SYMLINK_NOFOLLOW 4096
 261 #endif
 262
 263 #ifndef AT_REMOVEDIR
 264 # define AT_REMOVEDIR 1
 265 #endif
 266
 267 /* Solaris 9 lacks these two, so just pick unique values.  */
 268 #ifndef AT_SYMLINK_FOLLOW
 269 # define AT_SYMLINK_FOLLOW 2
 270 #endif
 271
 272 #ifndef AT_EACCESS
 273 # define AT_EACCESS 4
 274 #endif
 275
 276
 277 #endif /* _GL_FCNTL_H */
 278 #endif /* _GL_FCNTL_H */
 279 #endif