da84857631
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@5514 a1c6a512-1295-4272-9138-f99709370657
110 lines
4.3 KiB
C
110 lines
4.3 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) 2002 by Linus Nielsen Feltzing
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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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 FAT_H
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#define FAT_H
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#include <stdbool.h>
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#include "ata.h" /* for volume definitions */
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#define SECTOR_SIZE 512
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struct fat_direntry
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{
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unsigned char name[256]; /* Name plus \0 */
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unsigned short attr; /* Attributes */
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unsigned char crttimetenth; /* Millisecond creation
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time stamp (0-199) */
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unsigned short crttime; /* Creation time */
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unsigned short crtdate; /* Creation date */
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unsigned short lstaccdate; /* Last access date */
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unsigned short wrttime; /* Last write time */
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unsigned short wrtdate; /* Last write date */
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unsigned int filesize; /* File size in bytes */
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int firstcluster; /* fstclusterhi<<16 + fstcluslo */
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};
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#define FAT_ATTR_READ_ONLY 0x01
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#define FAT_ATTR_HIDDEN 0x02
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#define FAT_ATTR_SYSTEM 0x04
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#define FAT_ATTR_VOLUME_ID 0x08
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#define FAT_ATTR_DIRECTORY 0x10
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#define FAT_ATTR_ARCHIVE 0x20
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#define FAT_ATTR_VOLUME 0x40 /* this is a volume, not a real directory */
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struct fat_file
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{
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int firstcluster; /* first cluster in file */
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int lastcluster; /* cluster of last access */
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int lastsector; /* sector of last access */
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int clusternum; /* current clusternum */
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int sectornum; /* sector number in this cluster */
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unsigned int direntry; /* short dir entry index from start of dir */
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unsigned int direntries; /* number of dir entries used by this file */
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unsigned int dircluster; /* first cluster of dir */
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bool eof;
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#ifdef HAVE_MULTIVOLUME
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int volume; /* file resides on which volume */
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#endif
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};
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struct fat_dir
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{
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unsigned int entry;
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unsigned int entrycount;
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int sector;
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struct fat_file file;
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unsigned char sectorcache[3][SECTOR_SIZE];
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};
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extern void fat_init(void);
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extern int fat_mount(IF_MV2(int volume,) IF_MV2(int drive,) int startsector);
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extern void fat_size(IF_MV2(int volume,) unsigned int* size, unsigned int* free); // public for info
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extern void fat_recalc_free(IF_MV_NONVOID(int volume)); // public for debug info screen
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extern int fat_create_dir(const char* name,
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struct fat_dir* newdir,
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struct fat_dir* dir);
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extern int fat_startsector(IF_MV_NONVOID(int volume)); // public for config sector
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extern int fat_open(IF_MV2(int volume,)
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unsigned int cluster,
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struct fat_file* ent,
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const struct fat_dir* dir);
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extern int fat_create_file(const char* name,
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struct fat_file* ent,
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struct fat_dir* dir);
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extern int fat_readwrite(struct fat_file *ent, int sectorcount,
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void* buf, bool write );
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extern int fat_closewrite(struct fat_file *ent, int size, int attr);
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extern int fat_seek(struct fat_file *ent, unsigned int sector );
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extern int fat_remove(struct fat_file *ent);
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extern int fat_truncate(const struct fat_file *ent);
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extern int fat_rename(struct fat_file* file,
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struct fat_dir* dir,
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const unsigned char* newname,
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int size, int attr);
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extern int fat_opendir(IF_MV2(int volume,)
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struct fat_dir *ent, unsigned int currdir,
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const struct fat_dir *parent_dir);
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extern int fat_getnext(struct fat_dir *ent, struct fat_direntry *entry);
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extern int fat_get_cluster_size(IF_MV_NONVOID(int volume));
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extern bool fat_ismounted(int volume);
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#endif
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