sysdeps/unix/sysv/linux/ia64/bits/fcntl.h

   1 /* O_*, F_*, FD_* bit values for Linux/IA64.
   2    Copyright (C) 1999,2000,2004,2006,2007,2009 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 #ifndef _FCNTL_H
  21 # error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
  22 #endif
  23
  24
  25 #include <sys/types.h>
  26 #ifdef __USE_GNU
  27 # include <bits/uio.h>
  28 #endif
  29
  30 /* open/fcntl - O_SYNC is only implemented on blocks devices and on files
  31    located on a few file systems.  */
  32 #define O_ACCMODE         0003
  33 #define O_RDONLY            00
  34 #define O_WRONLY            01
  35 #define O_RDWR              02
  36 #define O_CREAT           0100  /* not fcntl */
  37 #define O_EXCL            0200  /* not fcntl */
  38 #define O_NOCTTY          0400  /* not fcntl */
  39 #define O_TRUNC          01000  /* not fcntl */
  40 #define O_APPEND         02000
  41 #define O_NONBLOCK       04000
  42 #define O_NDELAY        O_NONBLOCK
  43 #define O_SYNC        04010000
  44 #define O_FSYNC         O_SYNC
  45 #define O_ASYNC         020000
  46
  47 #ifdef __USE_GNU
  48 # define O_DIRECT       040000
  49 # define O_DIRECTORY    0200000 /* must be a directory */
  50 # define O_NOFOLLOW     0400000 /* don't follow links */
  51 # define O_NOATIME      01000000 /* Do not set atime.  */
  52 # define O_CLOEXEC      02000000 /* Set close_on_exec.  */
  53 #endif
  54
  55 #ifdef __USE_LARGEFILE64
  56 /* Not necessary, files are always with 64bit off_t.  */
  57 # define O_LARGEFILE    0
  58 #endif
  59
  60 /* For now Linux has synchronisity options for data and read operations.
  61    We define the symbols here but let them do the same as O_SYNC since
  62    this is a superset.  */
  63 #if defined __USE_POSIX199309 || defined __USE_UNIX98
  64 # define O_DSYNC        010000  /* Synchronize data.  */
  65 # define O_RSYNC        O_SYNC  /* Synchronize read operations.  */
  66 #endif
  67
  68 /* Values for the second argument to `fcntl'.  */
  69 #define F_DUPFD         0       /* Duplicate file descriptor.  */
  70 #define F_GETFD         1       /* Get file descriptor flags.  */
  71 #define F_SETFD         2       /* Set file descriptor flags.  */
  72 #define F_GETFL         3       /* Get file status flags.  */
  73 #define F_SETFL         4       /* Set file status flags.  */
  74 #define F_GETLK         5       /* Get record locking info.  */
  75 #define F_SETLK         6       /* Set record locking info (non-blocking).  */
  76 #define F_SETLKW        7       /* Set record locking info (blocking).  */
  77
  78 /* Not necessary, we always have 64-bit offsets.  */
  79 #define F_GETLK64       5       /* Get record locking info.  */
  80 #define F_SETLK64       6       /* Set record locking info (non-blocking).  */
  81 #define F_SETLKW64      7       /* Set record locking info (blocking).  */
  82
  83 #if defined __USE_BSD || defined __USE_UNIX98
  84 # define F_SETOWN       8       /* Get owner (process receiving SIGIO).  */
  85 # define F_GETOWN       9       /* Set owner (process receiving SIGIO).  */
  86 #endif
  87
  88 #ifdef __USE_GNU
  89 # define F_SETSIG       10      /* Set number of signal to be sent.  */
  90 # define F_GETSIG       11      /* Get number of signal to be sent.  */
  91 # define F_SETOWN_EX    15      /* Get owner (thread receiving SIGIO).  */
  92 # define F_GETOWN_EX    16      /* Set owner (thread receiving SIGIO).  */
  93 #endif
  94
  95 #ifdef __USE_GNU
  96 # define F_SETLEASE     1024    /* Set a lease.  */
  97 # define F_GETLEASE     1025    /* Enquire what lease is active.  */
  98 # define F_NOTIFY       1026    /* Request notfications on a directory.  */
  99 # define F_DUPFD_CLOEXEC 1030   /* Duplicate file descriptor with
 100                                    close-on-exit set.  */
 101 #endif
 102
 103 /* For F_[GET|SET]FD.  */
 104 #define FD_CLOEXEC      1       /* actually anything with low bit set goes */
 105
 106 /* For posix fcntl() and `l_type' field of a `struct flock' for lockf().  */
 107 #define F_RDLCK         0       /* Read lock.  */
 108 #define F_WRLCK         1       /* Write lock.  */
 109 #define F_UNLCK         2       /* Remove lock.  */
 110
 111 /* for old implementation of bsd flock () */
 112 #define F_EXLCK         4       /* or 3 */
 113 #define F_SHLCK         8       /* or 4 */
 114
 115 #ifdef __USE_BSD
 116 /* Operations for bsd flock(), also used by the kernel implementation */
 117 # define LOCK_SH        1       /* shared lock */
 118 # define LOCK_EX        2       /* exclusive lock */
 119 # define LOCK_NB        4       /* or'd with one of the above to prevent
 120                                    blocking */
 121 # define LOCK_UN        8       /* remove lock */
 122 #endif
 123
 124 #ifdef __USE_GNU
 125 # define LOCK_MAND      32      /* This is a mandatory flock:   */
 126 # define LOCK_READ      64      /* ... which allows concurrent read operations.  */
 127 # define LOCK_WRITE     128     /* ... which allows concurrent write operations.  */
 128 # define LOCK_RW        192     /* ... Which allows concurrent read & write operations.  */
 129 #endif
 130
 131
 132 #ifdef __USE_GNU
 133 /* Types of directory notifications that may be requested with F_NOTIFY.  */
 134 # define DN_ACCESS      0x00000001      /* File accessed.  */
 135 # define DN_MODIFY      0x00000002      /* File modified.  */
 136 # define DN_CREATE      0x00000004      /* File created.  */
 137 # define DN_DELETE      0x00000008      /* File removed.  */
 138 # define DN_RENAME      0x00000010      /* File renamed.  */
 139 # define DN_ATTRIB      0x00000020      /* File changed attibutes.  */
 140 # define DN_MULTISHOT   0x80000000      /* Don't remove notifier.  */
 141 #endif
 142
 143 /* We don't need to support __USE_FILE_OFFSET64.  */
 144 struct flock
 145   {
 146     short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
 147     short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
 148     __off_t l_start;    /* Offset where the lock begins.  */
 149     __off_t l_len;      /* Size of the locked area; zero means until EOF.  */
 150     __pid_t l_pid;      /* Process holding the lock.  */
 151   };
 152
 153 #ifdef __USE_LARGEFILE64
 154 struct flock64
 155   {
 156     short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
 157     short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
 158     __off64_t l_start;  /* Offset where the lock begins.  */
 159     __off64_t l_len;    /* Size of the locked area; zero means until EOF.  */
 160     __pid_t l_pid;      /* Process holding the lock.  */
 161   };
 162 #endif
 163
 164 #ifdef __USE_GNU
 165 /* Owner types.  */
 166 enum __pid_type
 167   {
 168     F_OWNER_TID = 0,            /* Kernel thread.  */
 169     F_OWNER_PID,                /* Process.  */
 170     F_OWNER_PGRP,               /* Process group.  */
 171     F_OWNER_GID = F_OWNER_PGRP  /* Alternative, obsolete name.  */
 172   };
 173
 174 /* Structure to use with F_GETOWN_EX and F_SETOWN_EX.  */
 175 struct f_owner_ex
 176   {
 177     enum __pid_type type;       /* Owner type of ID.  */
 178     __pid_t pid;                /* ID of owner.  */
 179   };
 180 #endif
 181
 182
 183 /* Define some more compatibility macros to be backward compatible with
 184    BSD systems which did not managed to hide these kernel macros.  */
 185 #ifdef  __USE_BSD
 186 # define FAPPEND        O_APPEND
 187 # define FFSYNC         O_FSYNC
 188 # define FASYNC         O_ASYNC
 189 # define FNONBLOCK      O_NONBLOCK
 190 # define FNDELAY        O_NDELAY
 191 #endif /* Use BSD.  */
 192
 193 /* Advise to `posix_fadvise'.  */
 194 #ifdef __USE_XOPEN2K
 195 # define POSIX_FADV_NORMAL      0 /* No further special treatment.  */
 196 # define POSIX_FADV_RANDOM      1 /* Expect random page references.  */
 197 # define POSIX_FADV_SEQUENTIAL  2 /* Expect sequential page references.  */
 198 # define POSIX_FADV_WILLNEED    3 /* Will need these pages.  */
 199 # define POSIX_FADV_DONTNEED    4 /* Don't need these pages.  */
 200 # define POSIX_FADV_NOREUSE     5 /* Data will be accessed once.  */
 201 #endif
 202
 203
 204 #ifdef __USE_GNU
 205 /* Flags for SYNC_FILE_RANGE.  */
 206 # define SYNC_FILE_RANGE_WAIT_BEFORE    1 /* Wait upon writeout of all pages
 207                                              in the range before performing the
 208                                              write.  */
 209 # define SYNC_FILE_RANGE_WRITE          2 /* Initiate writeout of all those
 210                                              dirty pages in the range which are
 211                                              not presently under writeback.  */
 212 # define SYNC_FILE_RANGE_WAIT_AFTER     4 /* Wait upon writeout of all pages in
 213                                              the range after performing the
 214                                              write.  */
 215
 216 /* Flags for SPLICE and VMSPLICE.  */
 217 # define SPLICE_F_MOVE          1       /* Move pages instead of copying.  */
 218 # define SPLICE_F_NONBLOCK      2       /* Don't block on the pipe splicing
 219                                            (but we may still block on the fd
 220                                            we splice from/to).  */
 221 # define SPLICE_F_MORE          4       /* Expect more data.  */
 222 # define SPLICE_F_GIFT          8       /* Pages passed in are a gift.  */
 223 #endif
 224
 225 __BEGIN_DECLS
 226
 227 #ifdef __USE_GNU
 228
 229 /* Provide kernel hint to read ahead.  */
 230 extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count)
 231     __THROW;
 232
 233
 234 /* Selective file content synch'ing.  */
 235 extern int sync_file_range (int __fd, __off64_t __offset, __off64_t __count,
 236                             unsigned int __flags);
 237
 238
 239 /* Splice address range into a pipe.  */
 240 extern ssize_t vmsplice (int __fdout, const struct iovec *__iov,
 241                          size_t __count, unsigned int __flags);
 242
 243 /* Splice two files together.  */
 244 extern ssize_t splice (int __fdin, __off64_t *__offin, int __fdout,
 245                        __off64_t *__offout, size_t __len,
 246                        unsigned int __flags);
 247
 248 /* In-kernel implementation of tee for pipe buffers.  */
 249 extern ssize_t tee (int __fdin, int __fdout, size_t __len,
 250                     unsigned int __flags);
 251
 252 /* Reserve storage for the data of the file associated with FD.  */
 253 # ifndef __USE_FILE_OFFSET64
 254 extern int fallocate (int __fd, int __mode, __off_t __offset, __off_t __len);
 255 # else
 256 #  ifdef __REDIRECT
 257 extern int __REDIRECT (fallocate, (int __fd, int __mode, __off64_t __offset,
 258                                    __off64_t __len),
 259                        fallocate64);
 260 #  else
 261 #   define fallocate fallocate64
 262 #  endif
 263 # endif
 264 # ifdef __USE_LARGEFILE64
 265 extern int fallocate64 (int __fd, int __mode, __off64_t __offset,
 266                         __off64_t __len);
 267 # endif
 268
 269 #endif
 270
 271 __END_DECLS