/*	$OpenBSD: fileext.h,v 1.2 2005/06/17 20:40:32 espie Exp $	*/

/* $NetBSD: fileext.h,v 1.5 2003/07/18 21:46:41 nathanw Exp $ */

/*-

 * Copyright (c)2001 Citrus Project,

 * All rights reserved.

 *

 * 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.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.

 *

 * $Citrus$

 */

/*

 * file extension

 */

struct __lttng_ust_sfileext {

	struct	__lttng_ust_sbuf _ub; /* ungetc buffer */

	struct wchar_io_data _wcio;	/* wide char io status */

};

#define _EXT(fp) ((struct __lttng_ust_sfileext *)((fp)->_ext._base))

#define _UB(fp) _EXT(fp)->_ub

#define _FILEEXT_INIT(fp) \

do { \

	_UB(fp)._base = NULL; \

	_UB(fp)._size = 0; \

	WCIO_INIT(fp); \

} while (0)

#define _FILEEXT_SETUP(f, fext) \

do { \

	(f)->_ext._base = (unsigned char *)(fext); \

	_FILEEXT_INIT(f); \

} while (0)