mirror of https://github.com/rusefi/emfat.git
96 lines
2.6 KiB
C
96 lines
2.6 KiB
C
/*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2015 by Sergey Fetisov <fsenok@gmail.com>
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in all
|
|
* copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*/
|
|
|
|
/*
|
|
* version: 1.0 (4.01.2015)
|
|
*/
|
|
|
|
#ifndef EMFAT_H
|
|
#define EMFAT_H
|
|
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
#include <stdbool.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
typedef void (*emfat_readcb_t)(uint8_t *dest, int size, uint32_t offset, size_t userdata);
|
|
typedef void (*emfat_writecb_t)(const uint8_t *data, int size, uint32_t offset, size_t userdata);
|
|
|
|
typedef struct emfat_entry emfat_entry_t;
|
|
|
|
struct emfat_entry
|
|
{
|
|
const char *name;
|
|
bool dir;
|
|
int level;
|
|
uint32_t offset;
|
|
uint32_t curr_size;
|
|
uint32_t max_size;
|
|
size_t user_data;
|
|
emfat_readcb_t readcb;
|
|
emfat_writecb_t writecb;
|
|
struct
|
|
{
|
|
uint32_t first_clust;
|
|
uint32_t last_clust;
|
|
uint32_t last_reserved;
|
|
uint32_t num_subentry;
|
|
emfat_entry_t *top;
|
|
emfat_entry_t *sub;
|
|
emfat_entry_t *next;
|
|
} priv;
|
|
};
|
|
|
|
typedef struct
|
|
{
|
|
uint64_t vol_size;
|
|
uint32_t num_sectors;
|
|
const char *vol_label;
|
|
struct
|
|
{
|
|
uint32_t boot_sect;
|
|
uint32_t fat1_sect;
|
|
uint32_t fat2_sect;
|
|
uint32_t root_sect;
|
|
uint32_t num_clust;
|
|
emfat_entry_t *entries;
|
|
emfat_entry_t *last_entry;
|
|
int num_entries;
|
|
} priv;
|
|
} emfat_t;
|
|
|
|
bool emfat_init(emfat_t *emfat, const char *label, emfat_entry_t *entries);
|
|
void emfat_read(emfat_t *emfat, uint8_t *data, uint32_t sector, int num_sectors);
|
|
void emfat_write(emfat_t *emfat, const uint8_t *data, uint32_t sector, int num_sectors);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif
|