124 lines
4 KiB
C
124 lines
4 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 <stdbool.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 /* HAVE_MULTIDRIVE */
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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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/* Format: "/<DEC###>/foo/bar"
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* The "DEC" is pure decoration and treated as a comment. Only an unbroken
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* trailing string of digits within the brackets is parsed as the volume
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* number.
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*
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* IMPORTANT!: Adjust VOL_DEC_MAX_LEN if needed to the longest of these
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*/
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#define DEFAULT_VOL_DEC "Volume"
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#if (CONFIG_STORAGE & STORAGE_ATA)
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#define ATA_VOL_DEC "HDD"
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#endif
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#if (CONFIG_STORAGE & STORAGE_MMC)
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#define MMC_VOL_DEC "MMC"
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#endif
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#if (CONFIG_STORAGE & STORAGE_SD)
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#define SD_VOL_DEC "microSD"
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#endif
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#if (CONFIG_STORAGE & STORAGE_NAND)
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#define NAND_VOL_DEC "NAND"
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#endif
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#if (CONFIG_STORAGE & STORAGE_RAMDISK)
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#define RAMDISK_VOL_DEC "RAMDisk"
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#endif
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#if (CONFIG_STORAGE & STORAGE_USB)
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#define USB_VOL_DEC "USB"
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#endif
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#if (CONFIG_STORAGE & STORAGE_HOSTFS)
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#ifndef HOSTFS_VOL_DEC /* overridable */
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#define HOSTFS_VOL_DEC DEFAULT_VOL_DEC
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#endif
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#endif
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/* Characters that delimit a volume specifier at any root point in the path.
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The tokens must be outside of legal filename characters */
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#define VOL_START_TOK '<'
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#define VOL_END_TOK '>'
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#define VOL_DEC_MAX_LEN 7 /* biggest of all xxx_VOL_DEC defines */
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#define VOL_MAX_LEN (1 + VOL_DEC_MAX_LEN + 2 + 1)
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#define VOL_NUM_MAX 100
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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 /* HAVE_MULTIVOLUME */
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#define CHECK_VOL(volume) \
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((unsigned int)IF_MV_VOL(volume) < NUM_VOLUMES)
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#define CHECK_DRV(drive) \
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((unsigned int)IF_MD_DRV(drive) < NUM_DRIVES)
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/* Volume-centric functions (in disk.c) */
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void volume_recalc_free(IF_MV_NONVOID(int volume));
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unsigned int volume_get_cluster_size(IF_MV_NONVOID(int volume));
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void volume_size(IF_MV(int volume,) unsigned long *size, unsigned long *free);
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#ifdef HAVE_DIRCACHE
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bool volume_ismounted(IF_MV_NONVOID(int volume));
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#endif
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#ifdef HAVE_HOTSWAP
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bool volume_removable(int volume);
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bool volume_present(int volume);
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#endif /* HAVE_HOTSWAP */
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#ifdef HAVE_MULTIDRIVE
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int volume_drive(int volume);
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#else /* !HAVE_MULTIDRIVE */
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static inline int volume_drive(int volume)
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{
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return 0;
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(void)volume;
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}
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#endif /* HAVE_MULTIDRIVE */
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#endif /* __MV_H__ */
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