9daacabd65
Provide definitions for the macros: * RB_ROOT_VOL_HIDDEN(v) to exclude certain items from the root. * RB_ROOT_CONTENTS to return a string with the name of the directory to mount in the root. Defaults are in export/rbpaths.h It's a bit much for those that don't need the full functionality. Some conditional define can cut it back a lot to cut out things only needed if alternate root mounts are required. I'm just not bothering yet. The basic concept would be applied to all targets to keep file code from forking too much. Change-Id: I3b5a14c530ff4b10d97f67636237d96875eb8969 Author: Michael Sevakis
128 lines
4.1 KiB
C
128 lines
4.1 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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#ifndef ROOT_VOLUME
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#define ROOT_VOLUME INT_MAX
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#endif
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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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