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/*
* Copyright © 2013 Keith Packard <keithp@keithp.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#ifndef _AO_FAT_H_
#define _AO_FAT_H_
void
ao_fat_init(void);
#define AO_FAT_FILE_REGULAR 0x00
#define AO_FAT_FILE_READ_ONLY 0x01
#define AO_FAT_FILE_HIDDEN 0x02
#define AO_FAT_FILE_SYSTEM 0x04
#define AO_FAT_FILE_VOLUME_LABEL 0x08
#define AO_FAT_FILE_DIRECTORY 0x10
#define AO_FAT_FILE_ARCHIVE 0x20
#define AO_FAT_DENT_EMPTY 0xe5
#define AO_FAT_DENT_END 0x00
#define AO_FAT_IS_FILE(attr) (((attr) & (AO_FAT_FILE_VOLUME_LABEL|AO_FAT_FILE_DIRECTORY)) == 0)
#define AO_FAT_IS_DIR(attr) (((attr) & (AO_FAT_FILE_DIRECTORY|AO_FAT_FILE_VOLUME_LABEL)) == AO_FAT_FILE_DIRECTORY)
/* API error codes */
#define AO_FAT_SUCCESS 0
#define AO_FAT_EPERM 1
#define AO_FAT_ENOENT 2
#define AO_FAT_EIO 4
#define AO_FAT_EBADF 9
#define AO_FAT_EACCESS 13
#define AO_FAT_EEXIST 17
#define AO_FAT_ENOTDIR 20
#define AO_FAT_EISDIR 21
#define AO_FAT_EMFILE 24
#define AO_FAT_EFBIG 27
#define AO_FAT_ENOSPC 28
#define AO_FAT_EDIREOF 29
/* ao_fat_setup return values */
#define AO_FAT_FILESYSTEM_SUCCESS 0
#define AO_FAT_FILESYSTEM_MBR_READ_FAILURE 1
#define AO_FAT_FILESYSTEM_INVALID_MBR_SIGNATURE 2
#define AO_FAT_FILESYSTEM_INVALID_PARTITION_TYPE 3
#define AO_FAT_FILESYSTEM_ZERO_SIZED_PARTITION 4
#define AO_FAT_FILESYSTEM_BOOT_READ_FAILURE 5
#define AO_FAT_FILESYSTEM_INVALID_BOOT_SIGNATURE 6
#define AO_FAT_FILESYSTEM_INVALID_SECTOR_SIZE 7
void
ao_fat_sync(void);
void
ao_fat_unmount(void);
int8_t
ao_fat_full(void);
int8_t
ao_fat_open(char name[11], uint8_t mode);
#define AO_FAT_OPEN_READ 0
#define AO_FAT_OPEN_WRITE 1
#define AO_FAT_OPEN_RW 2
int8_t
ao_fat_creat(char name[11]);
int8_t
ao_fat_close(int8_t fd);
int
ao_fat_read(int8_t fd, void *dest, int len);
int
ao_fat_write(int8_t fd, void *src, int len);
#define AO_FAT_SEEK_SET 0
#define AO_FAT_SEEK_CUR 1
#define AO_FAT_SEEK_END 2
int32_t
ao_fat_seek(int8_t fd, int32_t pos, uint8_t whence);
int8_t
ao_fat_unlink(char name[11]);
int8_t
ao_fat_rename(char old[11], char new[11]);
/*
* Byte offset within a file. Supports files up to 2GB in size
*/
typedef int32_t ao_fat_offset_t;
/*
* Cluster index in partition data space
*/
typedef uint32_t ao_fat_cluster_t;
/*
* Sector offset within partition
*/
typedef uint32_t ao_fat_sector_t;
/*
* Index within the root directory
*/
typedef uint16_t ao_fat_dirent_t;
/*
* Offset within a cluster (or sector)
*/
typedef uint16_t ao_fat_cluster_offset_t;
struct ao_fat_dirent {
char name[11];
uint8_t attr;
uint32_t size;
ao_fat_cluster_t cluster;
uint16_t entry;
};
int8_t
ao_fat_readdir(uint16_t *entry, struct ao_fat_dirent *dirent);
#endif /* _AO_FAT_H_ */
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