/*
* Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of "Eclipse Public License v1.0"
* which accompanies this distribution, and is available
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description:
*
*/



/**
 @file
 @publishedAll
 @released
*/

#ifndef	_FCNTL_
#define	_FCNTL_

#ifdef __cplusplus
extern "C" {
#endif

#include <_ansi.h>
#define	_FOPEN		(-1)	/* from sys/file.h, kernel use only */
#define	_FREAD		0x0001	/* read enabled */
#define	_FWRITE		0x0002	/* write enabled */
#define	_FNDELAY	0x0004	/* non blocking I/O (4.2 style) */
#define	_FAPPEND	0x0008	/* append (writes guaranteed at the end) */
#define	_FMARK		0x0010	/* internal; mark during gc() */
#define	_FDEFER		0x0020	/* internal; defer for next gc pass */
#define	_FASYNC		0x0040	/* signal pgrp when data ready */
#define	_FSHLOCK	0x0080	/* BSD flock() shared lock present */
#define	_FEXLOCK	0x0100	/* BSD flock() exclusive lock present */
#define	_FCREAT		0x0200	/* open with file create */
#define	_FTRUNC		0x0400	/* open with truncation */
#define	_FEXCL		0x0800	/* error on open if file exists */
#define	_FNBIO		0x1000	/* non blocking I/O (sys5 style) */
#define	_FSYNC		0x2000	/* do all writes synchronously */
#define	_FNONBLOCK	0x4000	/* non blocking I/O (POSIX style) */
#define	_FNOCTTY	0x8000	/* don't assign a ctty on this open */

#define _FBUFFERED  0x10000 /* buffer at the interface to the file system */

#define	O_ACCMODE	(O_RDONLY|O_WRONLY|O_RDWR)

/**
Flag values for open(2) and fcntl(2)
The kernel adds 1 to the open modes to turn it into some
combination of FREAD and FWRITE.
*/
#define	O_RDONLY	0		/* +1 == FREAD */
#define	O_WRONLY	1		/* +1 == FWRITE */
#define	O_RDWR		2		/* +1 == FREAD|FWRITE */
#define	O_APPEND	_FAPPEND
#define	O_CREAT		_FCREAT
#define	O_TRUNC		_FTRUNC
#define	O_EXCL		_FEXCL
/*	O_SYNC		_FSYNC		not posix, defined below */
/*	O_NDELAY	_FNDELAY 	set in include/fcntl.h */
/*	O_NDELAY	_FNBIO 		set in 5include/fcntl.h */
#define	O_NONBLOCK	_FNONBLOCK
#define	O_NOCTTY	_FNOCTTY

#define _FBINARY        0x10000
#define _FTEXT          0x20000
#define O_BINARY	_FBINARY
#define O_TEXT		_FTEXT
#define O_BUFFERED  _FBUFFERED

#ifndef	_POSIX_SOURCE

#define	O_SYNC		_FSYNC

/**
Flags that work for fcntl(fd, F_SETFL, FXXXX)
*/
#define	FAPPEND		_FAPPEND
#define	FSYNC		_FSYNC
#define	FASYNC		_FASYNC
#define	FNBIO		_FNBIO
#define	FNONBIO		_FNONBLOCK	/* XXX fix to be NONBLOCK everywhere */
#define	FNDELAY		_FNDELAY

/**
Flags that are disallowed for fcntl's (FCNTLCANT);
used for opens, internal state, or locking.
*/
#define	FREAD		_FREAD
#define	FWRITE		_FWRITE
#define	FMARK		_FMARK
#define	FDEFER		_FDEFER
#define	FSHLOCK		_FSHLOCK
#define	FEXLOCK		_FEXLOCK

/**
The rest of the flags, used only for opens
*/
#define	FOPEN		_FOPEN
#define	FCREAT		_FCREAT
#define	FTRUNC		_FTRUNC
#define	FEXCL		_FEXCL
#define	FNOCTTY		_FNOCTTY
#define FBUFFERED   _FBUFFERED

#endif	/* !_POSIX_SOURCE */

/**
XXX close on exec request; must match UF_EXCLOSE in user.h 
*/
#define	FD_CLOEXEC	1	/* posix */

/** 
fcntl(2) requests 
*/
#define	F_DUPFD		0	/* Duplicate fildes */
#define	F_GETFD		1	/* Get fildes flags (close on exec) */
#define	F_SETFD		2	/* Set fildes flags (close on exec) */
#define	F_GETFL		3	/* Get file flags */
#define	F_SETFL		4	/* Set file flags */
#ifndef	_POSIX_SOURCE
#define	F_GETOWN 	5	/* Get owner - for ASYNC */
#define	F_SETOWN 	6	/* Set owner - for ASYNC */
#endif	/* !_POSIX_SOURCE */
#define	F_GETLK  	7	/* Get record-locking information */
#define	F_SETLK  	8	/* Set or Clear a record-lock (Non-Blocking) */
#define	F_SETLKW 	9	/* Set or Clear a record-lock (Blocking) */
#ifndef	_POSIX_SOURCE
#define	F_RGETLK 	10	/* Test a remote lock to see if it is blocked */
#define	F_RSETLK 	11	/* Set or unlock a remote lock */
#define	F_CNVT 		12	/* Convert a fhandle to an open fd */
#define	F_RSETLKW 	13	/* Set or Clear remote record-lock(Blocking) */
#endif	/* !_POSIX_SOURCE */

/** 
fcntl(2) flags (l_type field of flock structure) 
*/
#define	F_RDLCK		1	/* read lock */
#define	F_WRLCK		2	/* write lock */
#define	F_UNLCK		3	/* remove lock(s) */
#ifndef	_POSIX_SOURCE
#define	F_UNLKSYS	4	/* remove remote locks for a given system */
#endif	/* !_POSIX_SOURCE */

/*#include <sys/stdtypes.h>*/

/** 
file segment locking set data type - information passed to system by user 
*/
struct flock {
	short	l_type;		/* F_RDLCK, F_WRLCK, or F_UNLCK */
	short	l_whence;	/* flag to choose starting offset */
	long	l_start;	/* relative offset, in bytes */
	long	l_len;		/* length, in bytes; 0 means lock to EOF */
	short	l_pid;		/* returned with F_GETLK */
	short	l_xxx;		/* reserved for future use */
};

#ifndef	_POSIX_SOURCE
/** 
extended file segment locking set data type 
*/
struct eflock {
	short	l_type;		/* F_RDLCK, F_WRLCK, or F_UNLCK */
	short	l_whence;	/* flag to choose starting offset */
	long	l_start;	/* relative offset, in bytes */
	long	l_len;		/* length, in bytes; 0 means lock to EOF */
	short	l_pid;		/* returned with F_GETLK */
	short	l_xxx;		/* reserved for future use */
	long	l_rpid;		/* Remote process id wanting this lock */
	long	l_rsys;		/* Remote system id wanting this lock */
};
#endif	/* !_POSIX_SOURCE */


#include <sys/types.h>
#include <sys/stat.h>		/* sigh. for the mode bits for open/creat */

#define creat(n,m)	open(n,O_WRONLY|O_CREAT|O_TRUNC,m)
IMPORT_C int open	(const char *, int, ...);
IMPORT_C int wopen	(const wchar_t *, int, ...);
extern int fcntl	(int, int, ...);

#ifdef __cplusplus
}
#endif
#endif	/* !_FCNTL_ */
