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/* O_*, F_*, FD_* bit values for Linux.
Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef _FCNTL_H
# error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
#endif
#include <sys/types.h>
/* open/fcntl - O_SYNC is only implemented on blocks devices and on files
located on an ext2 file system */
#define O_ACCMODE 0003
#define O_RDONLY 00
#define O_WRONLY 01
#define O_RDWR 02
#define O_CREAT 01000 /* not fcntl */
#define O_TRUNC 02000 /* not fcntl */
#define O_EXCL 04000 /* not fcntl */
#define O_NOCTTY 010000 /* not fcntl */
#define O_NONBLOCK 00004
#define O_APPEND 00010
#define O_NDELAY O_NONBLOCK
#define O_SYNC 040000
#define O_FSYNC O_SYNC
#define O_ASYNC 020000 /* fcntl, for BSD compatibility */
#ifdef __USE_GNU
# define O_DIRECT 040000 /* Direct disk access. */
#endif
/* Not necessary, files are always with 64bit off_t. */
#define O_LARGEFILE 0
/* Values for the second argument to `fcntl'. */
#define F_DUPFD 0 /* Duplicate file descriptor. */
#define F_GETFD 1 /* Get file descriptor flags. */
#define F_SETFD 2 /* Set file descriptor flags. */
#define F_GETFL 3 /* Get file status flags. */
#define F_SETFL 4 /* Set file status flags. */
#define F_GETLK 7 /* Get record locking info. */
#define F_SETLK 8 /* Set record locking info (non-blocking). */
#define F_SETLKW 9 /* Set record locking info (blocking). */
/* XXX missing */
#define F_GETLK64 7 /* Get record locking info. */
#define F_SETLK64 8 /* Set record locking info (non-blocking). */
#define F_SETLKW64 9 /* Set record locking info (blocking). */
#ifdef __USE_BSD
# define F_SETOWN 5 /* Get owner of socket (receiver of SIGIO). */
# define F_GETOWN 6 /* Set owner of socket (receiver of SIGIO). */
#endif
#ifdef __USE_GNU
# define F_SETSIG 10 /* Set number of signal to be sent. */
# define F_GETSIG 11 /* Get number of signal to be sent. */
#endif
/* for F_[GET|SET]FL */
#define FD_CLOEXEC 1 /* actually anything with low bit set goes */
/* For posix fcntl() and `l_type' field of a `struct flock' for lockf() */
#define F_RDLCK 1 /* Read lock. */
#define F_WRLCK 2 /* Write lock. */
#define F_UNLCK 8 /* Remove lock. */
/* for old implementation of bsd flock () */
#define F_EXLCK 16 /* or 3 */
#define F_SHLCK 32 /* or 4 */
/* operations for bsd flock(), also used by the kernel implementation */
#define LOCK_SH 1 /* shared lock */
#define LOCK_EX 2 /* exclusive lock */
#define LOCK_NB 4 /* or'd with one of the above to prevent
blocking */
#define LOCK_UN 8 /* remove lock */
/* We don't need to support __USE_FILE_OFFSET64. */
struct flock
{
short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */
short int l_whence; /* Where `l_start' is relative to (like `lseek'). */
__off_t l_start; /* Offset where the lock begins. */
__off_t l_len; /* Size of the locked area; zero means until EOF. */
__pid_t l_pid; /* Process holding the lock. */
};
#ifdef __USE_LARGEFILE64
struct flock64
{
short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */
short int l_whence; /* Where `l_start' is relative to (like `lseek'). */
__off64_t l_start; /* Offset where the lock begins. */
__off64_t l_len; /* Size of the locked area; zero means until EOF. */
__pid_t l_pid; /* Process holding the lock. */
};
#endif
/* Define some more compatibility macros to be backward compatible with
BSD systems which did not managed to hide these kernel macros. */
#ifdef __USE_BSD
# define FAPPEND O_APPEND
# define FFSYNC O_FSYNC
# define FASYNC O_ASYNC
# define FNONBLOCK O_NONBLOCK
# define FNDELAY O_NDELAY
#endif /* Use BSD. */
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