0,0 → 1,83 |
/* |
* Copyright (c) 2008 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - 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. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. |
*/ |
|
/** @addtogroup fs |
* @{ |
*/ |
|
#ifndef FAT_FAT_FAT_H_ |
#define FAT_FAT_FAT_H_ |
|
#include "../../vfs/vfs.h" |
#include <stdint.h> |
|
#define FAT1 0 |
|
#define FAT_CLST_RES0 0x0000 |
#define FAT_CLST_RES1 0x0001 |
#define FAT_CLST_FIRST 0x0002 |
#define FAT_CLST_BAD 0xfff7 |
#define FAT_CLST_LAST1 0xfff8 |
#define FAT_CLST_LAST8 0xffff |
|
/* internally used to mark root directory's parent */ |
#define FAT_CLST_ROOTPAR FAT_CLST_RES0 |
/* internally used to mark root directory */ |
#define FAT_CLST_ROOT FAT_CLST_RES1 |
|
/* forward declarations */ |
struct block; |
struct fat_node; |
struct fat_bs; |
|
typedef uint16_t fat_cluster_t; |
|
#define fat_block_get(bs, np, off) \ |
_fat_block_get((bs), (np)->idx->dev_handle, (np)->firstc, (off)) |
|
extern struct block *_fat_block_get(struct fat_bs *, dev_handle_t, |
fat_cluster_t, off_t); |
extern uint16_t _fat_blcks_get(struct fat_bs *, dev_handle_t, fat_cluster_t, |
fat_cluster_t *); |
|
extern void fat_append_clusters(struct fat_bs *, struct fat_node *, |
fat_cluster_t); |
extern int fat_alloc_clusters(struct fat_bs *, dev_handle_t, unsigned, |
fat_cluster_t *, fat_cluster_t *); |
extern void fat_alloc_shadow_clusters(struct fat_bs *, dev_handle_t, |
fat_cluster_t *, unsigned); |
extern void fat_mark_cluster(struct fat_bs *, dev_handle_t, unsigned, |
fat_cluster_t, fat_cluster_t); |
extern void fat_fill_gap(struct fat_bs *, struct fat_node *, fat_cluster_t, |
off_t); |
|
#endif |
|
/** |
* @} |
*/ |