libc/sysdeps/linux/mips/bits/fcntl.h

   1 /* O_*, F_*, FD_* bit values for Linux.
   2    Copyright (C) 1995, 1996, 1997, 1998, 2000, 2002, 2003, 2004, 2006
   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 #include <sgidefs.h>
  25 #include <sys/types.h>
  26 #ifdef __USE_GNU
  27 # include <bits/uio.h>
  28 #endif
  29
  30
  31 /* open/fcntl - O_SYNC is only implemented on blocks devices and on files
  32    located on an ext2 file system */
  33 #define O_ACCMODE          0003
  34 #define O_RDONLY             00
  35 #define O_WRONLY             01
  36 #define O_RDWR               02
  37 #define O_APPEND         0x0008
  38 #define O_SYNC           0x0010
  39 #define O_NONBLOCK       0x0080
  40 #define O_NDELAY        O_NONBLOCK
  41 #define O_CREAT          0x0100 /* not fcntl */
  42 #define O_TRUNC          0x0200 /* not fcntl */
  43 #define O_EXCL           0x0400 /* not fcntl */
  44 #define O_NOCTTY         0x0800 /* not fcntl */
  45 #define O_FSYNC          O_SYNC
  46 #define O_ASYNC          0x1000
  47
  48 #ifdef __USE_GNU
  49 # define O_NOFOLLOW     0x20000 /* Do not follow links.  */
  50 # define O_DIRECT       0x8000  /* Direct disk access hint.  */
  51 # define O_DIRECTORY    0x10000 /* Must be a directory.  */
  52 # define O_NOATIME      0x40000 /* Do not set atime.  */
  53 # define O_CLOEXEC     02000000 /* set close_on_exec */
  54 # define O_PATH       010000000 /* Resolve pathname but do not open file.  */
  55 #endif
  56
  57 /* For now Linux has no synchronisity options for data and read operations.
  58    We define the symbols here but let them do the same as O_SYNC since
  59    this is a superset.  */
  60 #if defined __USE_POSIX199309 || defined __USE_UNIX98
  61 # define O_DSYNC        O_SYNC  /* Synchronize data.  */
  62 # define O_RSYNC        O_SYNC  /* Synchronize read operations.  */
  63 #endif
  64
  65 #ifdef __USE_LARGEFILE64
  66 # if __WORDSIZE == 64
  67 #  define O_LARGEFILE   0
  68 # else
  69 #  define O_LARGEFILE   0x2000  /* Allow large file opens.  */
  70 # endif
  71 #endif
  72
  73 /* Values for the second argument to `fcntl'.  */
  74 #define F_DUPFD         0       /* Duplicate file descriptor.  */
  75 #define F_GETFD         1       /* Get file descriptor flags.  */
  76 #define F_SETFD         2       /* Set file descriptor flags.  */
  77 #define F_GETFL         3       /* Get file status flags.  */
  78 #define F_SETFL         4       /* Set file status flags.  */
  79 #ifndef __USE_FILE_OFFSET64
  80 # define F_GETLK        14      /* Get record locking info.  */
  81 # define F_SETLK        6       /* Set record locking info (non-blocking).  */
  82 # define F_SETLKW       7       /* Set record locking info (blocking).  */
  83 #else
  84 # define F_GETLK        F_GETLK64  /* Get record locking info.  */
  85 # define F_SETLK        F_SETLK64  /* Set record locking info (non-blocking).*/
  86 # define F_SETLKW       F_SETLKW64 /* Set record locking info (blocking).  */
  87 #endif
  88
  89 #if __WORDSIZE == 64
  90 # define F_GETLK64      14      /* Get record locking info.  */
  91 # define F_SETLK64      6       /* Set record locking info (non-blocking).  */
  92 # define F_SETLKW64     7       /* Set record locking info (blocking).  */
  93 #else
  94 # define F_GETLK64      33      /* Get record locking info.  */
  95 # define F_SETLK64      34      /* Set record locking info (non-blocking).  */
  96 # define F_SETLKW64     35      /* Set record locking info (blocking).  */
  97 #endif
  98
  99 #if defined __USE_BSD || defined __USE_UNIX98
 100 # define F_SETOWN       24      /* Get owner of socket (receiver of SIGIO).  */
 101 # define F_GETOWN       23      /* Set owner of socket (receiver of SIGIO).  */
 102 #endif
 103
 104 #ifdef __USE_GNU
 105 # define F_SETSIG       10      /* Set number of signal to be sent.  */
 106 # define F_GETSIG       11      /* Get number of signal to be sent.  */
 107 #endif
 108
 109 #ifdef __USE_GNU
 110 # define F_SETLEASE     1024    /* Set a lease.  */
 111 # define F_GETLEASE     1025    /* Enquire what lease is active.  */
 112 # define F_NOTIFY       1026    /* Request notfications on a directory.  */
 113 # define F_DUPFD_CLOEXEC 1030   /* Duplicate file descriptor with
 114                                    close-on-exit set on new fd.  */
 115 # define F_SETPIPE_SZ   1031    /* Set pipe page size array.  */
 116 # define F_GETPIPE_SZ   1032    /* Get pipe page size array.  */
 117 #endif
 118
 119 /* For F_[GET|SET]FL.  */
 120 #define FD_CLOEXEC      1       /* actually anything with low bit set goes */
 121
 122 /* For posix fcntl() and `l_type' field of a `struct flock' for lockf().  */
 123 #define F_RDLCK         0       /* Read lock.  */
 124 #define F_WRLCK         1       /* Write lock.  */
 125 #define F_UNLCK         2       /* Remove lock.  */
 126
 127 /* For old implementation of bsd flock().  */
 128 #define F_EXLCK         4       /* or 3 */
 129 #define F_SHLCK         8       /* or 4 */
 130
 131 #ifdef __USE_BSD
 132 /* Operations for bsd flock(), also used by the kernel implementation.  */
 133 # define LOCK_SH        1       /* shared lock */
 134 # define LOCK_EX        2       /* exclusive lock */
 135 # define LOCK_NB        4       /* or'd with one of the above to prevent
 136                                    blocking */
 137 # define LOCK_UN        8       /* remove lock */
 138 #endif
 139
 140 #ifdef __USE_GNU
 141 # define LOCK_MAND      32      /* This is a mandatory flock:   */
 142 # define LOCK_READ      64      /* ... which allows concurrent read operations.  */
 143 # define LOCK_WRITE     128     /* ... which allows concurrent write operations.  */
 144 # define LOCK_RW        192     /* ... Which allows concurrent read & write operations.  */
 145 #endif
 146
 147 #ifdef __USE_GNU
 148 /* Types of directory notifications that may be requested with F_NOTIFY.  */
 149 # define DN_ACCESS      0x00000001      /* File accessed.  */
 150 # define DN_MODIFY      0x00000002      /* File modified.  */
 151 # define DN_CREATE      0x00000004      /* File created.  */
 152 # define DN_DELETE      0x00000008      /* File removed.  */
 153 # define DN_RENAME      0x00000010      /* File renamed.  */
 154 # define DN_ATTRIB      0x00000020      /* File changed attibutes.  */
 155 # define DN_MULTISHOT   0x80000000      /* Don't remove notifier.  */
 156 #endif
 157
 158 struct flock
 159   {
 160     short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
 161     short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
 162 #ifndef __USE_FILE_OFFSET64
 163     __off_t l_start;    /* Offset where the lock begins.  */
 164     __off_t l_len;      /* Size of the locked area; zero means until EOF.  */
 165 #if _MIPS_SIM != _ABI64
 166     /* The 64-bit flock structure, used by the n64 ABI, and for 64-bit
 167        fcntls in o32 and n32, never has this field.  */
 168     long int l_sysid;
 169 #endif
 170 #else
 171     __off64_t l_start;  /* Offset where the lock begins.  */
 172     __off64_t l_len;    /* Size of the locked area; zero means until EOF.  */
 173 #endif
 174     __pid_t l_pid;      /* Process holding the lock.  */
 175 #if ! defined __USE_FILE_OFFSET64 && _MIPS_SIM != _ABI64
 176     /* The 64-bit flock structure, used by the n64 ABI, and for 64-bit
 177        flock in o32 and n32, never has this field.  */
 178     long int pad[4];
 179 #endif
 180   };
 181 typedef struct flock flock_t;
 182
 183 #ifdef __USE_LARGEFILE64
 184 struct flock64
 185   {
 186     short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
 187     short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
 188     __off64_t l_start;  /* Offset where the lock begins.  */
 189     __off64_t l_len;    /* Size of the locked area; zero means until EOF.  */
 190     __pid_t l_pid;      /* Process holding the lock.  */
 191   };
 192 #endif
 193
 194 /* Define some more compatibility macros to be backward compatible with
 195    BSD systems which did not managed to hide these kernel macros.  */
 196 #ifdef  __USE_BSD
 197 # define FAPPEND        O_APPEND
 198 # define FFSYNC         O_FSYNC
 199 # define FASYNC         O_ASYNC
 200 # define FNONBLOCK      O_NONBLOCK
 201 # define FNDELAY        O_NDELAY
 202 #endif /* Use BSD.  */
 203
 204 /* Advise to `posix_fadvise'.  */
 205 #ifdef __USE_XOPEN2K
 206 # define POSIX_FADV_NORMAL      0 /* No further special treatment.  */
 207 # define POSIX_FADV_RANDOM      1 /* Expect random page references.  */
 208 # define POSIX_FADV_SEQUENTIAL  2 /* Expect sequential page references.  */
 209 # define POSIX_FADV_WILLNEED    3 /* Will need these pages.  */
 210 # define POSIX_FADV_DONTNEED    4 /* Don't need these pages.  */
 211 # define POSIX_FADV_NOREUSE     5 /* Data will be accessed once.  */
 212 #endif
 213
 214
 215 #if defined __USE_GNU && defined __UCLIBC_LINUX_SPECIFIC__
 216 /* Flags for SYNC_FILE_RANGE.  */
 217 # define SYNC_FILE_RANGE_WAIT_BEFORE    1 /* Wait upon writeout of all pages
 218                                              in the range before performing the
 219                                              write.  */
 220 # define SYNC_FILE_RANGE_WRITE          2 /* Initiate writeout of all those
 221                                              dirty pages in the range which are
 222                                              not presently under writeback.  */
 223 # define SYNC_FILE_RANGE_WAIT_AFTER     4 /* Wait upon writeout of all pages in
 224                                              the range after performing the
 225                                              write.  */
 226
 227 /* Flags for SPLICE and VMSPLICE.  */
 228 # define SPLICE_F_MOVE          1       /* Move pages instead of copying.  */
 229 # define SPLICE_F_NONBLOCK      2       /* Don't block on the pipe splicing
 230                                            (but we may still block on the fd
 231                                            we splice from/to).  */
 232 # define SPLICE_F_MORE          4       /* Expect more data.  */
 233 # define SPLICE_F_GIFT          8       /* Pages passed in are a gift.  */
 234 #endif
 235
 236 __BEGIN_DECLS
 237
 238 #if defined __USE_GNU && defined __UCLIBC_LINUX_SPECIFIC__
 239
 240 /* Provide kernel hint to read ahead.  */
 241 extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count)
 242     __THROW;
 243
 244
 245 /* Selective file content synch'ing.  */
 246 extern int sync_file_range (int __fd, __off64_t __from, __off64_t __to,
 247                             unsigned int __flags);
 248
 249 /* Splice address range into a pipe.  */
 250 extern ssize_t vmsplice (int __fdout, const struct iovec *__iov,
 251                          size_t __count, unsigned int __flags);
 252
 253 /* Splice two files together.  */
 254 extern ssize_t splice (int __fdin, __off64_t *__offin, int __fdout,
 255                        __off64_t *__offout, size_t __len,
 256                        unsigned int __flags);
 257
 258 /* In-kernel implementation of tee for pipe buffers.  */
 259 extern ssize_t tee (int __fdin, int __fdout, size_t __len,
 260                     unsigned int __flags);
 261
 262 #endif
 263 __END_DECLS
 264