/*-
 * Copyright (c) 1983, 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 * (c) UNIX System Laboratories, Inc.
 * All or some portions of this file are derived from material licensed
 * to the University of California by American Telephone and Telegraph
 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
 * the permission of UNIX System Laboratories, Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * [¤3 Deleted as of 22Jul99, see
 *     ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
 *	   for details]
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)fcntl.h	8.3 (Berkeley) 1/21/94
 *
 * Adapted for GUSI by Matthias Neeracher <neeri@iis.ee.ethz.ch>
 */

#ifndef _FCNTL_H_
#define	_FCNTL_H_

/*
 * This file includes the definitions for open and fcntl
 * described by POSIX for <fcntl.h>; it also includes
 * related kernel definitions.
 */

#include <sys/types.h>

/* open-only flags */
#define	O_RDONLY	0x0001		/* open for reading only */
#define	O_WRONLY	0x0002		/* open for writing only */
#define	O_RDWR		0x0000		/* open for reading and writing */
#define	O_ACCMODE	0x0003		/* mask for above modes */

#define	O_NONBLOCK	0x0004		/* no delay */
#define	O_APPEND	0x0008		/* set append mode */
#define	O_CREAT		0x0200		/* create if nonexistant */
#define	O_TRUNC		0x0400		/* truncate to zero length */
#define	O_EXCL		0x0800		/* error if already exists */

#ifndef _POSIX_SOURCE
/* Mac specific */
#define O_ALIAS		0x2000		/* Open alias file (if the file is an alias) */
#define O_RSRC 		0x4000		/* Open the resource fork */
#endif

/* defined by POSIX 1003.1; BSD default, so no bit required */
#define	O_NOCTTY	0		/* don't assign controlling terminal */

#ifndef _POSIX_SOURCE
#define	FNDELAY		O_NONBLOCK	/* compat */
#endif

/*
 * Constants used for fcntl(2)
 */

/* command values */
#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_GETOWN    5       /* get SIGIO/SIGURG proc/pgrp */
#define F_SETOWN    6       /* set SIGIO/SIGURG proc/pgrp */
#define	F_GETLK		7		/* get record locking information */
#define	F_SETLK		8		/* set record locking information */
#define	F_SETLKW	9		/* F_SETLK; wait if blocked */

/* file descriptor flags (F_GETFD, F_SETFD) */
#define	FD_CLOEXEC	1		/* close-on-exec flag */

/* record locking flags (F_GETLK, F_SETLK, F_SETLKW) */
#define	F_RDLCK		1		/* shared or read lock */
#define	F_UNLCK		2		/* unlock */
#define	F_WRLCK		3		/* exclusive or write lock */

/*
 * Advisory file segment locking data type -
 * information passed to system by user
 */
struct flock {
	off_t	l_start;	/* starting offset */
	off_t	l_len;		/* len = 0 means until end of file */
	pid_t	l_pid;		/* lock owner */
	short	l_type;		/* lock type: read/write, etc. */
	short	l_whence;	/* type of l_start */
};

#include <sys/cdefs.h>
#include <stdio.h>

__BEGIN_DECLS
int	open __P((const char *, int, ...));
int	creat __P((const char *, ...));
int	fcntl __P((int, int, ...));

/* This properly belongs into stdio.h, but that header is outside of
   GUSI's control
*/
#ifdef __MWERKS__
FILE * fdopen(int fildes, char *type);
#else
FILE * fdopen(int fildes, const char *type);
#endif
__END_DECLS

#endif /* !_FCNTL_H_ */

