tools/brcm/K26/hndtools-mipsel-uclibc-4.2.4/include/fcntl.h

   1 /* Copyright (C) 1991,1992,1994-2001,2003,2004,2005
   2    Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library 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 GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 /*
  21  *      POSIX Standard: 6.5 File Control Operations     <fcntl.h>
  22  */
  23
  24 #ifndef _FCNTL_H
  25 #define _FCNTL_H        1
  26
  27 #include <features.h>
  28
  29 /* This must be early so <bits/fcntl.h> can define types winningly.  */
  30 __BEGIN_DECLS
  31
  32 /* Get the definitions of O_*, F_*, FD_*: all the
  33    numbers and flag bits for `open', `fcntl', et al.  */
  34 #include <bits/fcntl.h>
  35
  36 /* For XPG all symbols from <sys/stat.h> should also be available.  */
  37 #ifdef __USE_XOPEN
  38 # include <sys/stat.h>
  39 #endif
  40
  41 #ifdef  __USE_MISC
  42 # ifndef R_OK                   /* Verbatim from <unistd.h>.  Ugh.  */
  43 /* Values for the second argument to access.
  44    These may be OR'd together.  */
  45 #  define R_OK  4               /* Test for read permission.  */
  46 #  define W_OK  2               /* Test for write permission.  */
  47 #  define X_OK  1               /* Test for execute permission.  */
  48 #  define F_OK  0               /* Test for existence.  */
  49 # endif
  50 #endif /* Use misc.  */
  51
  52 /* XPG wants the following symbols.  */
  53 #ifdef __USE_XOPEN              /* <stdio.h> has the same definitions.  */
  54 # define SEEK_SET       0       /* Seek from beginning of file.  */
  55 # define SEEK_CUR       1       /* Seek from current position.  */
  56 # define SEEK_END       2       /* Seek from end of file.  */
  57 #endif  /* XPG */
  58
  59 #if 0 /*def __USE_GNU*/
  60 # define AT_FDCWD               -100    /* Special value used to indicate
  61                                            openat should use the current
  62                                            working directory. */
  63 # define AT_SYMLINK_NOFOLLOW    0x100   /* Do not follow symbolic links.  */
  64 # define AT_REMOVEDIR           0x200   /* Remove directory instead of
  65                                            unlinking file.  */
  66 #endif
  67
  68 /* Do the file control operation described by CMD on FD.
  69    The remaining arguments are interpreted depending on CMD.
  70
  71    This function is a cancellation point and therefore not marked with
  72    __THROW.  */
  73 #ifndef __USE_FILE_OFFSET64
  74 extern int fcntl (int __fd, int __cmd, ...);
  75 #else
  76 # ifdef __REDIRECT
  77 extern int __REDIRECT (fcntl, (int __fd, int __cmd, ...), fcntl64);
  78 # else
  79 #  define fcntl fcntl64
  80 # endif
  81 #endif
  82 #ifdef __USE_LARGEFILE64
  83 extern int fcntl64 (int __fd, int __cmd, ...);
  84 #endif
  85
  86 /* Open FILE and return a new file descriptor for it, or -1 on error.
  87    OFLAG determines the type of access used.  If O_CREAT is on OFLAG,
  88    the third argument is taken as a `mode_t', the mode of the created file.
  89
  90    This function is a cancellation point and therefore not marked with
  91    __THROW.  */
  92 #ifndef __USE_FILE_OFFSET64
  93 extern int open (__const char *__file, int __oflag, ...) __nonnull ((1));
  94 #else
  95 # ifdef __REDIRECT
  96 extern int __REDIRECT (open, (__const char *__file, int __oflag, ...), open64)
  97      __nonnull ((1));
  98 # else
  99 #  define open open64
 100 # endif
 101 #endif
 102 #ifdef __USE_LARGEFILE64
 103 extern int open64 (__const char *__file, int __oflag, ...) __nonnull ((1));
 104 #endif
 105
 106 #if 0 /*def __USE_GNU*/
 107 /* Similar to OPEN but a relative path name is interpreted relative to
 108    the directory for which FD is a descriptor.
 109
 110    NOTE: some other OPENAT implementation support additional functionality
 111    through this interface, especially using the O_XATTR flag.  This is not
 112    yet supported here.
 113
 114    This function is a cancellation point and therefore not marked with
 115    __THROW.  */
 116 # ifndef __USE_FILE_OFFSET64
 117 extern int openat (int __fd, __const char *__file, int __oflag, ...)
 118      __nonnull ((2));
 119 # else
 120 #  ifdef __REDIRECT
 121 extern int __REDIRECT (openat, (int __fd, __const char *__file, int __oflag,
 122                                 ...), openat64) __nonnull ((2));
 123 #  else
 124 #   define openat openat64
 125 #  endif
 126 # endif
 127
 128 extern int openat64 (int __fd, __const char *__file, int __oflag, ...)
 129      __nonnull ((2));
 130 #endif
 131
 132 /* Create and open FILE, with mode MODE.  This takes an `int' MODE
 133    argument because that is what `mode_t' will be widened to.
 134
 135    This function is a cancellation point and therefore not marked with
 136    __THROW.  */
 137 #ifndef __USE_FILE_OFFSET64
 138 extern int creat (__const char *__file, __mode_t __mode) __nonnull ((1));
 139 #else
 140 # ifdef __REDIRECT
 141 extern int __REDIRECT (creat, (__const char *__file, __mode_t __mode),
 142                        creat64) __nonnull ((1));
 143 # else
 144 #  define creat creat64
 145 # endif
 146 #endif
 147 #ifdef __USE_LARGEFILE64
 148 extern int creat64 (__const char *__file, __mode_t __mode) __nonnull ((1));
 149 #endif
 150
 151 #if !defined F_LOCK && (defined __USE_MISC || (defined __USE_XOPEN_EXTENDED \
 152                                                && !defined __USE_POSIX))
 153 /* NOTE: These declarations also appear in <unistd.h>; be sure to keep both
 154    files consistent.  Some systems have them there and some here, and some
 155    software depends on the macros being defined without including both.  */
 156
 157 /* `lockf' is a simpler interface to the locking facilities of `fcntl'.
 158    LEN is always relative to the current file position.
 159    The CMD argument is one of the following.  */
 160
 161 # define F_ULOCK 0      /* Unlock a previously locked region.  */
 162 # define F_LOCK  1      /* Lock a region for exclusive use.  */
 163 # define F_TLOCK 2      /* Test and lock a region for exclusive use.  */
 164 # define F_TEST  3      /* Test a region for other processes locks.  */
 165
 166 # ifndef __USE_FILE_OFFSET64
 167 extern int lockf (int __fd, int __cmd, __off_t __len);
 168 # else
 169 # ifdef __REDIRECT
 170 extern int __REDIRECT (lockf, (int __fd, int __cmd, __off64_t __len), lockf64);
 171 # else
 172 #  define lockf lockf64
 173 # endif
 174 # endif
 175 # ifdef __USE_LARGEFILE64
 176 extern int lockf64 (int __fd, int __cmd, __off64_t __len);
 177 # endif
 178 #endif
 179
 180 #if defined __USE_XOPEN2K && defined __UCLIBC_HAS_ADVANCED_REALTIME__
 181 /* Advice the system about the expected behaviour of the application with
 182    respect to the file associated with FD.  */
 183 # ifndef __USE_FILE_OFFSET64
 184 extern int posix_fadvise (int __fd, __off_t __offset, __off_t __len,
 185                           int __advise) __THROW;
 186 # else
 187 # ifdef __REDIRECT_NTH
 188 extern int __REDIRECT_NTH (posix_fadvise, (int __fd, __off64_t __offset,
 189                                        __off64_t __len, int __advise),
 190                        posix_fadvise64);
 191 # else
 192 #  define posix_fadvise posix_fadvise64
 193 # endif
 194 # endif
 195 # ifdef __USE_LARGEFILE64
 196 extern int posix_fadvise64 (int __fd, __off64_t __offset, __off64_t __len,
 197                             int __advise) __THROW;
 198 # endif
 199
 200 #endif
 201
 202 #if 0 /* && defined __UCLIBC_HAS_ADVANCED_REALTIME__ */
 203
 204 /* FIXME -- uClibc should probably implement these... */
 205
 206 /* Reserve storage for the data of the file associated with FD.
 207
 208    This function is a possible cancellation points and therefore not
 209    marked with __THROW.  */
 210 # ifndef __USE_FILE_OFFSET64
 211 extern int posix_fallocate (int __fd, __off_t __offset, __off_t __len);
 212 # else
 213 # ifdef __REDIRECT
 214 extern int __REDIRECT (posix_fallocate, (int __fd, __off64_t __offset,
 215                                          __off64_t __len),
 216                        posix_fallocate64);
 217 # else
 218 #  define posix_fallocate posix_fallocate64
 219 # endif
 220 # endif
 221 # ifdef __USE_LARGEFILE64
 222 extern int posix_fallocate64 (int __fd, __off64_t __offset, __off64_t __len);
 223 # endif
 224 #endif
 225
 226 __END_DECLS
 227
 228 #endif /* fcntl.h  */