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

   1 /* O_*, F_*, FD_* bit values for Linux.
   2    Copyright (C) 1995, 1996, 1997, 1998 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 Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    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    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 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
  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_ACCMODE         0003
  31 #define O_RDONLY            00
  32 #define O_WRONLY            01
  33 #define O_RDWR              02
  34 #define O_CREAT          01000  /* not fcntl */
  35 #define O_TRUNC          02000  /* not fcntl */
  36 #define O_EXCL           04000  /* not fcntl */
  37 #define O_NOCTTY        010000  /* not fcntl */
  38
  39 #define O_NONBLOCK       00004
  40 #define O_APPEND         00010
  41 #define O_NDELAY        O_NONBLOCK
  42 #define O_SYNC          040000
  43 #define O_FSYNC         O_SYNC
  44 #define O_ASYNC         020000  /* fcntl, for BSD compatibility */
  45
  46 #ifdef __USE_GNU
  47 # define O_DIRECT       040000  /* Direct disk access.  */
  48 #endif
  49
  50 /* Not necessary, files are always with 64bit off_t.  */
  51 #define O_LARGEFILE     0
  52
  53 /* Values for the second argument to `fcntl'.  */
  54 #define F_DUPFD         0       /* Duplicate file descriptor.  */
  55 #define F_GETFD         1       /* Get file descriptor flags.  */
  56 #define F_SETFD         2       /* Set file descriptor flags.  */
  57 #define F_GETFL         3       /* Get file status flags.  */
  58 #define F_SETFL         4       /* Set file status flags.  */
  59 #define F_GETLK         7       /* Get record locking info.  */
  60 #define F_SETLK         8       /* Set record locking info (non-blocking).  */
  61 #define F_SETLKW        9       /* Set record locking info (blocking).  */
  62
  63 /* XXX missing */
  64 #define F_GETLK64       7       /* Get record locking info.  */
  65 #define F_SETLK64       8       /* Set record locking info (non-blocking).  */
  66 #define F_SETLKW64      9       /* Set record locking info (blocking).  */
  67
  68 #ifdef __USE_BSD
  69 # define F_SETOWN       5       /* Get owner of socket (receiver of SIGIO).  */
  70 # define F_GETOWN       6       /* Set owner of socket (receiver of SIGIO).  */
  71 #endif
  72
  73 #ifdef __USE_GNU
  74 # define F_SETSIG       10      /* Set number of signal to be sent.  */
  75 # define F_GETSIG       11      /* Get number of signal to be sent.  */
  76 #endif
  77
  78 /* for F_[GET|SET]FL */
  79 #define FD_CLOEXEC      1       /* actually anything with low bit set goes */
  80
  81 /* For posix fcntl() and `l_type' field of a `struct flock' for lockf() */
  82 #define F_RDLCK         1       /* Read lock.  */
  83 #define F_WRLCK         2       /* Write lock.  */
  84 #define F_UNLCK         8       /* Remove lock.  */
  85
  86 /* for old implementation of bsd flock () */
  87 #define F_EXLCK         16      /* or 3 */
  88 #define F_SHLCK         32      /* or 4 */
  89
  90 /* operations for bsd flock(), also used by the kernel implementation */
  91 #define LOCK_SH         1       /* shared lock */
  92 #define LOCK_EX         2       /* exclusive lock */
  93 #define LOCK_NB         4       /* or'd with one of the above to prevent
  94                                    blocking */
  95 #define LOCK_UN         8       /* remove lock */
  96
  97 /* We don't need to support __USE_FILE_OFFSET64.  */
  98 struct flock
  99   {
 100     short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
 101     short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
 102     __off_t l_start;    /* Offset where the lock begins.  */
 103     __off_t l_len;      /* Size of the locked area; zero means until EOF.  */
 104     __pid_t l_pid;      /* Process holding the lock.  */
 105   };
 106
 107 #ifdef __USE_LARGEFILE64
 108 struct flock64
 109   {
 110     short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
 111     short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
 112     __off64_t l_start;  /* Offset where the lock begins.  */
 113     __off64_t l_len;    /* Size of the locked area; zero means until EOF.  */
 114     __pid_t l_pid;      /* Process holding the lock.  */
 115   };
 116 #endif
 117
 118
 119 /* Define some more compatibility macros to be backward compatible with
 120    BSD systems which did not managed to hide these kernel macros.  */
 121 #ifdef  __USE_BSD
 122 # define FAPPEND                O_APPEND
 123 # define FFSYNC         O_FSYNC
 124 # define FASYNC         O_ASYNC
 125 # define FNONBLOCK      O_NONBLOCK
 126 # define FNDELAY                O_NDELAY
 127 #endif /* Use BSD.  */