sysdeps/unix/sysv/linux/alpha/fcntlbits.h

   1 /* O_*, F_*, FD_* bit values for Linux.
   2    Copyright (C) 1995, 1996, 1997 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 _FCNTLBITS_H
  21 #define _FCNTLBITS_H    1
  22
  23 #include <sys/types.h>
  24
  25
  26 /* open/fcntl - O_SYNC is only implemented on blocks devices and on files
  27    located on an ext2 file system */
  28 #define O_ACCMODE         0003
  29 #define O_RDONLY            00
  30 #define O_WRONLY            01
  31 #define O_RDWR              02
  32 #define O_CREAT          01000  /* not fcntl */
  33 #define O_TRUNC          02000  /* not fcntl */
  34 #define O_EXCL           04000  /* not fcntl */
  35 #define O_NOCTTY        010000  /* not fcntl */
  36
  37 #define O_NONBLOCK       00004
  38 #define O_APPEND         00010
  39 #define O_NDELAY        O_NONBLOCK
  40 #define O_SYNC          040000
  41 #define FASYNC          020000  /* fcntl, for BSD compatibility */
  42
  43 #define F_DUPFD         0       /* dup */
  44 #define F_GETFD         1       /* get f_flags */
  45 #define F_SETFD         2       /* set f_flags */
  46 #define F_GETFL         3       /* more flags (cloexec) */
  47 #define F_SETFL         4
  48 #define F_GETLK         7
  49 #define F_SETLK         8
  50 #define F_SETLKW        9
  51
  52 #define F_SETOWN        5       /*  for sockets. */
  53 #define F_GETOWN        6       /*  for sockets. */
  54
  55 /* for F_[GET|SET]FL */
  56 #define FD_CLOEXEC      1       /* actually anything with low bit set goes */
  57
  58 /* for posix fcntl() and lockf() */
  59 #define F_RDLCK         1
  60 #define F_WRLCK         2
  61 #define F_UNLCK         8
  62
  63 /* for old implementation of bsd flock () */
  64 #define F_EXLCK         16      /* or 3 */
  65 #define F_SHLCK         32      /* or 4 */
  66
  67 /* operations for bsd flock(), also used by the kernel implementation */
  68 #define LOCK_SH         1       /* shared lock */
  69 #define LOCK_EX         2       /* exclusive lock */
  70 #define LOCK_NB         4       /* or'd with one of the above to prevent
  71                                    blocking */
  72 #define LOCK_UN         8       /* remove lock */
  73
  74 struct flock
  75   {
  76     short int l_type;
  77     short int l_whence;
  78     __off_t l_start;
  79     __off_t l_len;
  80     __pid_t l_pid;
  81   };
  82
  83
  84 /* Define some more compatibility macros to be backward compatible with
  85    BSD systems which did not managed to hide these kernel macros.  */
  86 #ifdef  __USE_BSD
  87 #define FAPPEND         O_APPEND
  88 #define FFSYNC          O_FSYNC
  89 #define FNONBLOCK       O_NONBLOCK
  90 #define FNDELAY         O_NDELAY
  91 #endif /* Use BSD.  */
  92
  93 #endif  /* fcntlbits.h */