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/*
libparted
Copyright (C) 1998-2001, 2007, 2009-2014, 2019-2023 Free Software
Foundation, Inc.
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; either version 3 of the License, or
(at your option) any later version.
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, see <http://www.gnu.org/licenses/>.
*/
#ifndef FAT_H_INCLUDED
#define FAT_H_INCLUDED
#include <parted/parted.h>
#include <parted/endian.h>
#include <parted/debug.h>
#if ENABLE_NLS
# include <libintl.h>
# define _(String) dgettext (PACKAGE, String)
#else
# define _(String) (String)
#endif /* ENABLE_NLS */
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#define BUFFER_SIZE 1024 /* buffer size in sectors (512 bytes) */
typedef uint32_t FatCluster;
typedef int32_t FatFragment;
enum _FatType {
FAT_TYPE_FAT12,
FAT_TYPE_FAT16,
FAT_TYPE_FAT32
};
typedef enum _FatType FatType;
typedef struct _FatSpecific FatSpecific;
typedef struct _FatDirEntry FatDirEntry;
#include "bootsector.h"
#include "count.h"
struct _FatTable {
void* table;
FatCluster size;
int raw_size;
FatType fat_type;
FatCluster cluster_count;
FatCluster free_cluster_count;
FatCluster bad_cluster_count;
FatCluster last_alloc;
};
typedef struct _FatTable FatTable;
struct __attribute__ ((packed)) _FatDirEntry {
char name[8];
uint8_t extension[3];
uint8_t attributes;
uint8_t is_upper_case_name;
uint8_t creation_time_low; /* milliseconds */
uint16_t creation_time_high;
uint16_t creation_date;
uint16_t access_date;
uint16_t first_cluster_high; /* for FAT32 */
uint16_t time;
uint16_t date;
uint16_t first_cluster;
uint32_t length;
};
struct _FatSpecific {
FatBootSector *boot_sector; /* structure of boot sector */
FatInfoSector *info_sector; /* fat32-only information sector */
int logical_sector_size; /* illogical sector size :-) */
PedSector sector_count;
int sectors_per_track; /* BIOS CHS stuff (S) */
int heads; /* BIOS CHS stuff (H) */
int cluster_size;
PedSector cluster_sectors;
FatCluster cluster_count;
int dir_entries_per_cluster;
FatType fat_type;
int fat_table_count;
PedSector fat_sectors;
uint32_t serial_number;
PedSector info_sector_offset; /* FAT32 only */
PedSector fat_offset;
PedSector root_dir_offset; /* non-FAT32 */
PedSector cluster_offset;
PedSector boot_sector_backup_offset;
FatCluster root_cluster; /* FAT32 only */
int root_dir_entry_count; /* non-FAT32 */
PedSector root_dir_sector_count; /* non-FAT32 */
FatCluster total_dir_clusters;
FatTable* fat;
FatClusterInfo* cluster_info;
PedSector buffer_sectors;
char* buffer;
int frag_size;
PedSector frag_sectors;
FatFragment frag_count;
FatFragment buffer_frags;
FatFragment cluster_frags;
};
#define FAT_SPECIFIC(fs) ((FatSpecific*) fs->type_specific)
#define FAT_ROOT 0
#define DELETED_FLAG 0xe5
#define READONLY_ATTR 0x01
#define HIDDEN_ATTR 0x02
#define SYSTEM_ATTR 0x04
#define VOLUME_LABEL_ATTR 0x08
#define VFAT_ATTR 0x0f
#define DIRECTORY_ATTR 0x10
#define ARCH_ATTR 0x20
#define MAX_FAT12_CLUSTERS 4086
#define MAX_FAT16_CLUSTERS 65526
#define MAX_FAT32_CLUSTERS 2000000
#define FAT_ROOT_DIR_ENTRY_COUNT 512
extern PedFileSystemType fat16_type;
extern PedFileSystemType fat32_type;
extern void fat_print (const PedFileSystem* fs);
extern PedFileSystem* fat_alloc (const PedGeometry* geom);
extern void fat_free (PedFileSystem* fs);
extern int fat_alloc_buffers (PedFileSystem* fs);
extern int fat_resize (PedFileSystem* fs, PedGeometry* geom, PedTimer* timer);
#endif /* FAT_H_INCLUDED */
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