sysdeps/unix/sysv/linux/mips/bits/fcntl.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 _FCNTL_H
  21 #error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
  22 #endif
  23
  24 #include <sys/types.h>
  25
  26
  27 /* In GNU, read and write are bits (unlike BSD).  */
  28 #ifdef __USE_GNU
  29 #define O_READ          O_RDONLY        /* Open for reading.  */
  30 #define O_WRITE         O_WRONLY        /* Open for writing.  */
  31 #endif
  32 /* open/fcntl - O_SYNC is only implemented on blocks devices and on files
  33    located on an ext2 file system */
  34 #define O_ACCMODE       0x0003
  35 #define O_RDONLY        0x0000
  36 #define O_WRONLY        0x0001
  37 #define O_RDWR          0x0002
  38 #define O_APPEND        0x0008
  39 #define O_SYNC          0x0010
  40 #define O_NONBLOCK      0x0080
  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         020000
  47
  48 #define O_NDELAY        O_NONBLOCK
  49
  50 #define F_DUPFD         0       /* dup */
  51 #define F_GETFD         1       /* get f_flags */
  52 #define F_SETFD         2       /* set f_flags */
  53 #define F_GETFL         3       /* more flags (cloexec) */
  54 #define F_SETFL         4
  55 #define F_GETLK         14
  56 #define F_SETLK         6
  57 #define F_SETLKW        7
  58
  59 #define F_SETOWN        24      /*  for sockets. */
  60 #define F_GETOWN        23      /*  for sockets. */
  61
  62 /* for F_[GET|SET]FL */
  63 #define FD_CLOEXEC      1       /* actually anything with low bit set goes */
  64
  65 /* for posix fcntl() and lockf() */
  66 #define F_RDLCK         0
  67 #define F_WRLCK         1
  68 #define F_UNLCK         2
  69
  70 /* for old implementation of bsd flock () */
  71 #define F_EXLCK         4       /* or 3 */
  72 #define F_SHLCK         8       /* or 4 */
  73
  74 /* operations for bsd flock(), also used by the kernel implementation */
  75 #define LOCK_SH         1       /* shared lock */
  76 #define LOCK_EX         2       /* exclusive lock */
  77 #define LOCK_NB         4       /* or'd with one of the above to prevent                XXXXXXXXXXXXXXXXXX
  78                                    blocking */
  79 #define LOCK_UN         8       /* remove lock */
  80
  81 typedef struct flock {
  82         short l_type;
  83         short l_whence;
  84         __off_t l_start;
  85         __off_t l_len;
  86         long  l_sysid;                  /* XXX */
  87         __pid_t l_pid;
  88         long  pad[4];                   /* XXX */
  89 } flock_t;
  90
  91
  92 /* Define some more compatibility macros to be backward compatible with
  93    BSD systems which did not managed to hide these kernel macros.  */
  94 #ifdef  __USE_BSD
  95 #define FAPPEND         O_APPEND
  96 #define FFSYNC          O_FSYNC
  97 #define FASYNC          O_ASYNC
  98 #define FNONBLOCK       O_NONBLOCK
  99 #define FNDELAY         O_NDELAY
 100 #endif /* Use BSD.  */