a56f1ca1ed
When using variadic macros there's no need for IF_MD2/IF_MV2 to deal with function parameters. IF_MD/IF_MV are enough. Throw in IF_MD_DRV/ID_MV_VOL that return the parameter if MD/MV, or 0 if not. Change-Id: I7605e6039f3be19cb47110c84dcb3c5516f2c3eb
54 lines
2 KiB
C
54 lines
2 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2008 by Frank Gevaerts
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef __MV_H__
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#define __MV_H__
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#include "config.h"
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/* FixMe: These macros are a bit nasty and perhaps misplaced here.
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We'll get rid of them once decided on how to proceed with multivolume. */
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/* Drives are things like a disk, a card, a flash chip. They can have volumes
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on them */
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#ifdef HAVE_MULTIDRIVE
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#define IF_MD(x...) x /* valist contents or empty */
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#define IF_MD_NONVOID(x...) x /* valist contents or 'void' */
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#define IF_MD_DRV(d) d /* drive argument or '0' */
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#else /* empty definitions if no multi-drive */
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#define IF_MD(x...)
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#define IF_MD_NONVOID(x...) void
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#define IF_MD_DRV(d) 0
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#endif
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/* Volumes mean things that have filesystems on them, like partitions */
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#ifdef HAVE_MULTIVOLUME
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#define IF_MV(x...) x /* valist contents or empty */
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#define IF_MV_NONVOID(x...) x /* valist contents or 'void' */
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#define IF_MV_VOL(v) v /* volume argument or '0' */
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#else /* empty definitions if no multi-volume */
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#define IF_MV(x...)
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#define IF_MV_NONVOID(x...) void
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#define IF_MV_VOL(v) 0
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#endif
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#endif /* __MV_H__ */
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