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, 2010, 2011
   3    Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  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_XOPEN2K8
  48 # define O_DIRECTORY    0200000 /* must be a directory */
  49 # define O_NOFOLLOW     0400000 /* don't follow links */
  50 # define O_CLOEXEC      02000000 /* Set close_on_exec.  */
  51 #endif
  52 #ifdef __USE_GNU
  53 # define O_DIRECT       040000
  54 # define O_NOATIME      01000000 /* Do not set atime.  */
  55 # define O_PATH         010000000 /* Resolve pathname but do not open file.  */
  56 #endif
  57
  58 #ifdef __USE_LARGEFILE64
  59 /* Not necessary, files are always with 64bit off_t.  */
  60 # define O_LARGEFILE    0
  61 #endif
  62
  63 /* For now Linux has synchronisity options for data and read operations.
  64    We define the symbols here but let them do the same as O_SYNC since
  65    this is a superset.  */
  66 #if defined __USE_POSIX199309 || defined __USE_UNIX98
  67 # define O_DSYNC        010000  /* Synchronize data.  */
  68 # define O_RSYNC        O_SYNC  /* Synchronize read operations.  */
  69 #endif
  70
  71 /* Values for the second argument to `fcntl'.  */
  72 #define F_DUPFD         0       /* Duplicate file descriptor.  */
  73 #define F_GETFD         1       /* Get file descriptor flags.  */
  74 #define F_SETFD         2       /* Set file descriptor flags.  */
  75 #define F_GETFL         3       /* Get file status flags.  */
  76 #define F_SETFL         4       /* Set file status flags.  */
  77 #define F_GETLK         5       /* Get record locking info.  */
  78 #define F_SETLK         6       /* Set record locking info (non-blocking).  */
  79 #define F_SETLKW        7       /* Set record locking info (blocking).  */
  80
  81 /* Not necessary, we always have 64-bit offsets.  */
  82 #define F_GETLK64       5       /* Get record locking info.  */
  83 #define F_SETLK64       6       /* Set record locking info (non-blocking).  */
  84 #define F_SETLKW64      7       /* Set record locking info (blocking).  */
  85
  86 #if defined __USE_BSD || defined __USE_UNIX98 || defined __USE_XOPEN2K8
  87 # define F_SETOWN       8       /* Get owner (process receiving SIGIO).  */
  88 # define F_GETOWN       9       /* Set owner (process receiving SIGIO).  */
  89 #endif
  90
  91 #ifdef __USE_GNU
  92 # define F_SETSIG       10      /* Set number of signal to be sent.  */
  93 # define F_GETSIG       11      /* Get number of signal to be sent.  */
  94 # define F_SETOWN_EX    15      /* Get owner (thread receiving SIGIO).  */
  95 # define F_GETOWN_EX    16      /* Set owner (thread receiving SIGIO).  */
  96 #endif
  97
  98 #ifdef __USE_GNU
  99 # define F_SETLEASE     1024    /* Set a lease.  */
 100 # define F_GETLEASE     1025    /* Enquire what lease is active.  */
 101 # define F_NOTIFY       1026    /* Request notfications on a directory.  */
 102 # define F_SETPIPE_SZ   1031    /* Set pipe page size array.  */
 103 # define F_GETPIPE_SZ   1032    /* Set pipe page size array.  */
 104 #endif
 105 #ifdef __USE_XOPEN2K8
 106 # define F_DUPFD_CLOEXEC 1030   /* Duplicate file descriptor with
 107                                    close-on-exit set.  */
 108 #endif
 109
 110 /* For F_[GET|SET]FD.  */
 111 #define FD_CLOEXEC      1       /* actually anything with low bit set goes */
 112
 113 /* For posix fcntl() and `l_type' field of a `struct flock' for lockf().  */
 114 #define F_RDLCK         0       /* Read lock.  */
 115 #define F_WRLCK         1       /* Write lock.  */
 116 #define F_UNLCK         2       /* Remove lock.  */
 117
 118 /* for old implementation of bsd flock () */
 119 #define F_EXLCK         4       /* or 3 */
 120 #define F_SHLCK         8       /* or 4 */
 121
 122 #ifdef __USE_BSD
 123 /* Operations for bsd flock(), also used by the kernel implementation */
 124 # define LOCK_SH        1       /* shared lock */
 125 # define LOCK_EX        2       /* exclusive lock */
 126 # define LOCK_NB        4       /* or'd with one of the above to prevent
 127                                    blocking */
 128 # define LOCK_UN        8       /* remove lock */
 129 #endif
 130
 131 #ifdef __USE_GNU
 132 # define LOCK_MAND      32      /* This is a mandatory flock:   */
 133 # define LOCK_READ      64      /* ... which allows concurrent read operations.  */
 134 # define LOCK_WRITE     128     /* ... which allows concurrent write operations.  */
 135 # define LOCK_RW        192     /* ... Which allows concurrent read & write operations.  */
 136 #endif
 137
 138
 139 #ifdef __USE_GNU
 140 /* Types of directory notifications that may be requested with F_NOTIFY.  */
 141 # define DN_ACCESS      0x00000001      /* File accessed.  */
 142 # define DN_MODIFY      0x00000002      /* File modified.  */
 143 # define DN_CREATE      0x00000004      /* File created.  */
 144 # define DN_DELETE      0x00000008      /* File removed.  */
 145 # define DN_RENAME      0x00000010      /* File renamed.  */
 146 # define DN_ATTRIB      0x00000020      /* File changed attibutes.  */
 147 # define DN_MULTISHOT   0x80000000      /* Don't remove notifier.  */
 148 #endif
 149
 150 /* We don't need to support __USE_FILE_OFFSET64.  */
 151 struct flock
 152   {
 153     short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
 154     short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
 155     __off_t l_start;    /* Offset where the lock begins.  */
 156     __off_t l_len;      /* Size of the locked area; zero means until EOF.  */
 157     __pid_t l_pid;      /* Process holding the lock.  */
 158   };
 159
 160 #ifdef __USE_LARGEFILE64
 161 struct flock64
 162   {
 163     short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
 164     short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
 165     __off64_t l_start;  /* Offset where the lock begins.  */
 166     __off64_t l_len;    /* Size of the locked area; zero means until EOF.  */
 167     __pid_t l_pid;      /* Process holding the lock.  */
 168   };
 169 #endif
 170
 171 #ifdef __USE_GNU
 172 /* Owner types.  */
 173 enum __pid_type
 174   {
 175     F_OWNER_TID = 0,            /* Kernel thread.  */
 176     F_OWNER_PID,                /* Process.  */
 177     F_OWNER_PGRP,               /* Process group.  */
 178     F_OWNER_GID = F_OWNER_PGRP  /* Alternative, obsolete name.  */
 179   };
 180
 181 /* Structure to use with F_GETOWN_EX and F_SETOWN_EX.  */
 182 struct f_owner_ex
 183   {
 184     enum __pid_type type;       /* Owner type of ID.  */
 185     __pid_t pid;                /* ID of owner.  */
 186   };
 187 #endif
 188
 189
 190 /* Define some more compatibility macros to be backward compatible with
 191    BSD systems which did not managed to hide these kernel macros.  */
 192 #ifdef  __USE_BSD
 193 # define FAPPEND        O_APPEND
 194 # define FFSYNC         O_FSYNC
 195 # define FASYNC         O_ASYNC
 196 # define FNONBLOCK      O_NONBLOCK
 197 # define FNDELAY        O_NDELAY
 198 #endif /* Use BSD.  */
 199
 200 /* Advise to `posix_fadvise'.  */
 201 #ifdef __USE_XOPEN2K
 202 # define POSIX_FADV_NORMAL      0 /* No further special treatment.  */
 203 # define POSIX_FADV_RANDOM      1 /* Expect random page references.  */
 204 # define POSIX_FADV_SEQUENTIAL  2 /* Expect sequential page references.  */
 205 # define POSIX_FADV_WILLNEED    3 /* Will need these pages.  */
 206 # define POSIX_FADV_DONTNEED    4 /* Don't need these pages.  */
 207 # define POSIX_FADV_NOREUSE     5 /* Data will be accessed once.  */
 208 #endif
 209
 210
 211 #ifdef __USE_GNU
 212 /* Flags for SYNC_FILE_RANGE.  */
 213 # define SYNC_FILE_RANGE_WAIT_BEFORE    1 /* Wait upon writeout of all pages
 214                                              in the range before performing the
 215                                              write.  */
 216 # define SYNC_FILE_RANGE_WRITE          2 /* Initiate writeout of all those
 217                                              dirty pages in the range which are
 218                                              not presently under writeback.  */
 219 # define SYNC_FILE_RANGE_WAIT_AFTER     4 /* Wait upon writeout of all pages in
 220                                              the range after performing the
 221                                              write.  */
 222
 223 /* Flags for SPLICE and VMSPLICE.  */
 224 # define SPLICE_F_MOVE          1       /* Move pages instead of copying.  */
 225 # define SPLICE_F_NONBLOCK      2       /* Don't block on the pipe splicing
 226                                            (but we may still block on the fd
 227                                            we splice from/to).  */
 228 # define SPLICE_F_MORE          4       /* Expect more data.  */
 229 # define SPLICE_F_GIFT          8       /* Pages passed in are a gift.  */
 230
 231
 232 /* File handle structure.  */
 233 struct file_handle
 234 {
 235   unsigned int handle_bytes;
 236   int handle_type;
 237   /* File identifier.  */
 238   unsigned char f_handle[0];
 239 };
 240
 241 /* Maximum handle size (for now).  */
 242 # define MAX_HANDLE_SZ  128
 243 #endif
 244
 245 __BEGIN_DECLS
 246
 247 #ifdef __USE_GNU
 248
 249 /* Provide kernel hint to read ahead.  */
 250 extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count)
 251     __THROW;
 252
 253
 254 /* Selective file content synch'ing.
 255
 256    This function is a possible cancellation point and therefore not
 257    marked with __THROW.  */
 258 extern int sync_file_range (int __fd, __off64_t __offset, __off64_t __count,
 259                             unsigned int __flags);
 260
 261
 262 /* Splice address range into a pipe.
 263
 264    This function is a possible cancellation point and therefore not
 265    marked with __THROW.  */
 266 extern ssize_t vmsplice (int __fdout, const struct iovec *__iov,
 267                          size_t __count, unsigned int __flags);
 268
 269 /* Splice two files together.
 270
 271    This function is a possible cancellation point and therefore not
 272    marked with __THROW.  */
 273 extern ssize_t splice (int __fdin, __off64_t *__offin, int __fdout,
 274                        __off64_t *__offout, size_t __len,
 275                        unsigned int __flags);
 276
 277 /* In-kernel implementation of tee for pipe buffers.
 278
 279    This function is a possible cancellation point and therefore not
 280    marked with __THROW.  */
 281 extern ssize_t tee (int __fdin, int __fdout, size_t __len,
 282                     unsigned int __flags);
 283
 284 /* Reserve storage for the data of the file associated with FD.
 285
 286    This function is a possible cancellation point and therefore not
 287    marked with __THROW.  */
 288 # ifndef __USE_FILE_OFFSET64
 289 extern int fallocate (int __fd, int __mode, __off_t __offset, __off_t __len);
 290 # else
 291 #  ifdef __REDIRECT
 292 extern int __REDIRECT (fallocate, (int __fd, int __mode, __off64_t __offset,
 293                                    __off64_t __len),
 294                        fallocate64);
 295 #  else
 296 #   define fallocate fallocate64
 297 #  endif
 298 # endif
 299 # ifdef __USE_LARGEFILE64
 300 extern int fallocate64 (int __fd, int __mode, __off64_t __offset,
 301                         __off64_t __len);
 302 # endif
 303
 304
 305 /* Map file name to file handle.  */
 306 extern int name_to_handle_at (int __dfd, const char *__name,
 307                               struct file_handle *__handle, int *__mnt_id,
 308                               int __flags) __THROW;
 309
 310 /* Open file using the file handle.
 311
 312    This function is a possible cancellation point and therefore not
 313    marked with __THROW.  */
 314 extern int open_by_handle_at (int __mountdirfd, struct file_handle *__handle,
 315                               int __flags);
 316
 317 #endif
 318
 319 __END_DECLS