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

   1 /* O_*, F_*, FD_* bit values for Linux/SPARC.
   2    Copyright (C) 1995, 1996, 1997, 1998, 2000, 2003, 2004
   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, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #ifndef _FCNTL_H
  22 # error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
  23 #endif
  24
  25 #include <sys/types.h>
  26 #include <bits/wordsize.h>
  27
  28 /* open/fcntl - O_SYNC is only implemented on blocks devices and on files
  29    located on an ext2 file system */
  30 #define O_RDONLY        0x0000
  31 #define O_WRONLY        0x0001
  32 #define O_RDWR          0x0002
  33 #define O_ACCMODE       0x0003
  34 #define O_APPEND        0x0008
  35 #define O_ASYNC         0x0040
  36 #define O_CREAT         0x0200  /* not fcntl */
  37 #define O_TRUNC         0x0400  /* not fcntl */
  38 #define O_EXCL          0x0800  /* not fcntl */
  39 #define O_SYNC          0x2000
  40 #define O_NONBLOCK      0x4000
  41 #define O_NDELAY        (0x0004 | O_NONBLOCK)
  42 #define O_NOCTTY        0x8000  /* not fcntl */
  43
  44 #ifdef __USE_GNU
  45 # define O_DIRECTORY    0x10000 /* must be a directory */
  46 # define O_NOFOLLOW     0x20000 /* don't follow links */
  47 # define O_DIRECT       0x100000 /* direct disk access hint */
  48 # define O_NOATIME      0x200000 /* Do not set atime.  */
  49 #endif
  50
  51 #ifdef __USE_LARGEFILE64
  52 # if __WORDSIZE == 64
  53 #  define O_LARGEFILE   0
  54 # else
  55 #  define O_LARGEFILE   0x40000
  56 # endif
  57 #endif
  58
  59 /* For now Linux has no synchronisity options for data and read
  60    operations.  We define the symbols here but let them do the same as
  61    O_SYNC since this is a superset.  */
  62 #if defined __USE_POSIX199309 || defined __USE_UNIX98
  63 # define O_DSYNC        O_SYNC  /* Synchronize data.  */
  64 # define O_RSYNC        O_SYNC  /* Synchronize read operations.  */
  65 #endif
  66
  67 /* For now Linux has synchronisity options for data and read operations.
  68    We define the symbols here but let them do the same as O_SYNC since
  69    this is a superset.  */
  70 #if defined __USE_POSIX199309 || defined __USE_UNIX98
  71 # define O_DSYNC        O_SYNC  /* Synchronize data.  */
  72 # define O_RSYNC        O_SYNC  /* Synchronize read operations.  */
  73 #endif
  74
  75 /* Values for the second argument to `fcntl'.  */
  76 #define F_DUPFD         0       /* Duplicate file descriptor.  */
  77 #define F_GETFD         1       /* Get file descriptor flags.  */
  78 #define F_SETFD         2       /* Set file descriptor flags.  */
  79 #define F_GETFL         3       /* Get file status flags.  */
  80 #define F_SETFL         4       /* Set file status flags.  */
  81 #if defined __USE_BSD || defined __USE_UNIX98
  82 # define F_GETOWN       5       /* Get owner of socket (receiver of SIGIO).  */
  83 # define F_SETOWN       6       /* Set owner of socket (receiver of SIGIO).  */
  84 #endif
  85 #ifndef __USE_FILE_OFFSET64
  86 # define F_GETLK        7       /* Get record locking info.  */
  87 # define F_SETLK        8       /* Set record locking info (non-blocking).  */
  88 # define F_SETLKW       9       /* Set record locking info (blocking).  */
  89 #else
  90 # define F_GETLK        F_GETLK64  /* Get record locking info.  */
  91 # define F_SETLK        F_SETLK64  /* Set record locking info (non-blocking).*/
  92 # define F_SETLKW       F_SETLKW64 /* Set record locking info (blocking).  */
  93 #endif
  94
  95 #ifdef __USE_GNU
  96 # define F_SETSIG       10      /* Set number of signal to be sent.  */
  97 # define F_GETSIG       11      /* Get number of signal to be sent.  */
  98 #endif
  99
 100 #ifdef __USE_GNU
 101 # define F_SETLEASE     1024    /* Set a lease.  */
 102 # define F_GETLEASE     1025    /* Enquire what lease is active.  */
 103 # define F_NOTIFY       1026    /* Request notfications on a directory.  */
 104 #endif
 105
 106 #if __WORDSIZE == 64
 107 # define F_GETLK64      7       /* Get record locking info.  */
 108 # define F_SETLK64      8       /* Set record locking info (non-blocking).  */
 109 # define F_SETLKW64     9       /* Set record locking info (blocking).  */
 110 #else
 111 # define F_GETLK64      12      /* Get record locking info.  */
 112 # define F_SETLK64      13      /* Set record locking info (non-blocking).  */
 113 # define F_SETLKW64     14      /* Set record locking info (blocking).  */
 114 #endif
 115
 116 /* for F_[GET|SET]FL */
 117 #define FD_CLOEXEC      1       /* actually anything with low bit set goes */
 118
 119 /* For posix fcntl() and `l_type' field of a `struct flock' for lockf().  */
 120 #define F_RDLCK         1       /* Read lock.  */
 121 #define F_WRLCK         2       /* Write lock.  */
 122 #define F_UNLCK         3       /* Remove lock.  */
 123
 124 /* for old implementation of bsd flock () */
 125 #define F_EXLCK         4       /* or 3 */
 126 #define F_SHLCK         8       /* or 4 */
 127
 128 #ifdef __USE_BSD
 129 /* Operations for bsd flock(), also used by the kernel implementation */
 130 # define LOCK_SH        1       /* shared lock */
 131 # define LOCK_EX        2       /* exclusive lock */
 132 # define LOCK_NB        4       /* or'd with one of the above to prevent
 133                                    blocking */
 134 # define LOCK_UN        8       /* remove lock */
 135 #endif
 136
 137 #ifdef __USE_GNU
 138 # define LOCK_MAND      32      /* This is a mandatory flock:   */
 139 # define LOCK_READ      64      /* ... which allows concurrent read operations.  */
 140 # define LOCK_WRITE     128     /* ... which allows concurrent write operations.  */
 141 # define LOCK_RW        192     /* ... Which allows concurrent read & write operations.  */
 142 #endif
 143
 144 #ifdef __USE_GNU
 145 /* Types of directory notifications that may be requested with F_NOTIFY.  */
 146 # define DN_ACCESS      0x00000001      /* File accessed.  */
 147 # define DN_MODIFY      0x00000002      /* File modified.  */
 148 # define DN_CREATE      0x00000004      /* File created.  */
 149 # define DN_DELETE      0x00000008      /* File removed.  */
 150 # define DN_RENAME      0x00000010      /* File renamed.  */
 151 # define DN_ATTRIB      0x00000020      /* File changed attibutes.  */
 152 # define DN_MULTISHOT   0x80000000      /* Don't remove notifier.  */
 153 #endif
 154
 155 struct flock
 156   {
 157     short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
 158     short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
 159 #ifndef __USE_FILE_OFFSET64
 160     __off_t l_start;    /* Offset where the lock begins.  */
 161     __off_t l_len;      /* Size of the locked area; zero means until EOF.  */
 162 #else
 163     __off64_t l_start;  /* Offset where the lock begins.  */
 164     __off64_t l_len;    /* Size of the locked area; zero means until EOF.  */
 165 #endif
 166     __pid_t l_pid;      /* Process holding the lock.  */
 167     short int __unused;
 168   };
 169
 170 #ifdef __USE_LARGEFILE64
 171 struct flock64
 172   {
 173     short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
 174     short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
 175     __off64_t l_start;  /* Offset where the lock begins.  */
 176     __off64_t l_len;    /* Size of the locked area; zero means until EOF.  */
 177     __pid_t l_pid;      /* Process holding the lock.  */
 178     short int __unused;
 179   };
 180 #endif
 181
 182 /* Define some more compatibility macros to be backward compatible with
 183    BSD systems which did not managed to hide these kernel macros.  */
 184 #ifdef  __USE_BSD
 185 # define FAPPEND        O_APPEND
 186 # define FFSYNC         O_FSYNC
 187 # define FASYNC         O_ASYNC
 188 # define FNONBLOCK      O_NONBLOCK
 189 # define FNDELAY        O_NDELAY
 190 #endif /* Use BSD.  */
 191
 192 /* Advise to `posix_fadvise'.  */
 193 #ifdef __USE_XOPEN2K
 194 # define POSIX_FADV_NORMAL      0 /* No further special treatment.  */
 195 # define POSIX_FADV_RANDOM      1 /* Expect random page references.  */
 196 # define POSIX_FADV_SEQUENTIAL  2 /* Expect sequential page references.  */
 197 # define POSIX_FADV_WILLNEED    3 /* Will need these pages.  */
 198 # define POSIX_FADV_DONTNEED    4 /* Don't need these pages.  */
 199 # define POSIX_FADV_NOREUSE     5 /* Data will be accessed once.  */
 200 #endif
 201
 202 __BEGIN_DECLS
 203
 204 /* Provide kernel hint to read ahead.  */
 205 extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count)
 206     __THROW;
 207
 208 __END_DECLS