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/* O_*, F_*, FD_* bit values for Linux.
Copyright (C) 1995-1999, 2000 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; 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. */
#define O_ACCMODE 0003
#define O_RDONLY 00
#define O_WRONLY 01
#define O_RDWR 02
#define O_NONBLOCK 04
#define O_NDELAY O_NONBLOCK
#define O_APPEND 010
#define O_SYNC 020
#define O_FSYNC O_SYNC
#define O_CREAT 0400 /* not fcntl */
#define O_TRUNC 01000 /* not fcntl */
#define O_EXCL 02000 /* not fcntl */
#define O_NOCTTY 04000 /* not fcntl */
#define O_ASYNC 0400000
#ifdef __USE_LARGEFILE64
# define O_LARGEFILE 0400000000
#endif
/* For now Linux has synchronisity options for data and read operations.
We define the symbols here but let them do the same as O_SYNC since
this is a superset. */
#if defined __USE_POSIX199309 || defined __USE_UNIX98
# define O_DSYNC 020000000 /* Synchronize data. */
# define O_RSYNC 010000000 /* Synchronize read operations. */
#endif
/* 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. */
#ifndef __USE_FILE_OFFSET64
# define F_GETLK 5 /* Get record locking info. */
# define F_SETLK 6 /* Set record locking info (non-blocking). */
# define F_SETLKW 7 /* Set record locking info (blocking). */
#else
# define F_GETLK 11 /* Get record locking info. */
# define F_SETLK 12 /* Set record locking info (non-blocking). */
# define F_SETLKW 13 /* Set record locking info (blocking). */
#endif
#ifdef __USE_LARGEFILE64
# define F_GETLK64 11 /* Get record locking info. */
# define F_SETLK64 12 /* Set record locking info (non-blocking). */
# define F_SETLKW64 13 /* Set record locking info (blocking). */
#endif
#if defined __USE_BSD || defined __USE_XOPEN2K
# define F_SETOWN 8 /* Get owner of socket (receiver of SIGIO). */
# define F_GETOWN 9 /* Set owner of socket (receiver of SIGIO). */
#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 3 /* Remove lock. */
#ifdef __USE_BSD
/* 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 */
#endif
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'). */
#ifndef __USE_FILE_OFFSET64
__off_t l_start; /* Offset where the lock begins. */
__off_t l_len; /* Size of the locked area; zero means until EOF. */
#endif
unsigned int l_sysid;
__pid_t l_pid; /* Process holding the lock. */
int l_vfs;
#ifdef __USE_FILE_OFFSET64
__off64_t l_start; /* Offset where the lock begins. */
__off64_t l_len; /* Size of the locked area; zero means until EOF. */
#endif
};
#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'). */
unsigned int l_sysid;
__pid_t l_pid; /* Process holding the lock. */
int l_vfs;
__off64_t l_start; /* Offset where the lock begins. */
__off64_t l_len; /* Size of the locked area; zero means until EOF. */
};
#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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