diff options
Diffstat (limited to '')
| -rw-r--r-- | libparted/fs/fat/fat.h | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/libparted/fs/fat/fat.h b/libparted/fs/fat/fat.h new file mode 100644 index 0000000..f5302d9 --- /dev/null +++ b/libparted/fs/fat/fat.h @@ -0,0 +1,163 @@ +/* + 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 */ |