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android_kernel_samsung_msm8976/fs/exfat/exfat.h
LuK1337 fc9499e55a Import latest Samsung release 
* Package version: T713XXU2BQCO

Change-Id: I293d9e7f2df458c512d59b7a06f8ca6add610c99
2017-04-18 03:43:52 +02:00

601 lines
23 KiB
C
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/*
* Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
*
* 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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef _EXFAT_H
#define _EXFAT_H
#include "exfat_config.h"
#include "exfat_global.h"
#include "exfat_data.h"
#include "exfat_oal.h"
#include "exfat_blkdev.h"
#include "exfat_cache.h"
#include "exfat_nls.h"
#include "exfat_api.h"
#include "exfat_cache.h"
#ifdef __cplusplus
extern "C" {
#endif
#if EXFAT_CONFIG_KERNEL_DEBUG
#define EXFAT_IOC_GET_DEBUGFLAGS _IOR('f', 100, long)
#define EXFAT_IOC_SET_DEBUGFLAGS _IOW('f', 101, long)
#define EXFAT_DEBUGFLAGS_INVALID_UMOUNT 0x01
#define EXFAT_DEBUGFLAGS_ERROR_RW 0x02
#endif
#define MAX_VOLUME 4
#define DENTRY_SIZE 32
#define DENTRY_SIZE_BITS 5
#define PBR_SIGNATURE 0xAA55
#define EXT_SIGNATURE 0xAA550000
#define VOL_LABEL "NO NAME "
#define OEM_NAME "MSWIN4.1"
#define STR_FAT12 "FAT12 "
#define STR_FAT16 "FAT16 "
#define STR_FAT32 "FAT32 "
#define STR_EXFAT "EXFAT "
#define VOL_CLEAN 0x0000
#define VOL_DIRTY 0x0002
#define FAT12_THRESHOLD 4087
#define FAT16_THRESHOLD 65527
#define FAT32_THRESHOLD 268435457
#define EXFAT_THRESHOLD 268435457
#define TYPE_UNUSED 0x0000
#define TYPE_DELETED 0x0001
#define TYPE_INVALID 0x0002
#define TYPE_CRITICAL_PRI 0x0100
#define TYPE_BITMAP 0x0101
#define TYPE_UPCASE 0x0102
#define TYPE_VOLUME 0x0103
#define TYPE_DIR 0x0104
#define TYPE_FILE 0x011F
#define TYPE_SYMLINK 0x015F
#define TYPE_CRITICAL_SEC 0x0200
#define TYPE_STREAM 0x0201
#define TYPE_EXTEND 0x0202
#define TYPE_ACL 0x0203
#define TYPE_BENIGN_PRI 0x0400
#define TYPE_GUID 0x0401
#define TYPE_PADDING 0x0402
#define TYPE_ACLTAB 0x0403
#define TYPE_BENIGN_SEC 0x0800
#define TYPE_ALL 0x0FFF
#define TM_CREATE 0
#define TM_MODIFY 1
#define TM_ACCESS 2
#define CS_DIR_ENTRY 0
#define CS_PBR_SECTOR 1
#define CS_DEFAULT 2
#define DIR_DELETED 0xFFFF0321
#define CLUSTER_16(x) ((UINT16)(x))
#define CLUSTER_32(x) ((UINT32)(x))
#define START_SECTOR(x) \
( (((x)-2) << p_fs->sectors_per_clu_bits) + p_fs->data_start_sector )
#define IS_LAST_SECTOR_IN_CLUSTER(sec) \
( (((sec) - p_fs->data_start_sector + 1) & ((1 << p_fs->sectors_per_clu_bits) -1)) == 0)
#define GET_CLUSTER_FROM_SECTOR(sec) \
((((sec) - p_fs->data_start_sector) >> p_fs->sectors_per_clu_bits) +2)
#define GET16(p_src) \
( ((UINT16)(p_src)[0]) | (((UINT16)(p_src)[1]) << 8) )
#define GET32(p_src) \
( ((UINT32)(p_src)[0]) | (((UINT32)(p_src)[1]) << 8) | \
(((UINT32)(p_src)[2]) << 16) | (((UINT32)(p_src)[3]) << 24) )
#define GET64(p_src) \
( ((UINT64)(p_src)[0]) | (((UINT64)(p_src)[1]) << 8) | \
(((UINT64)(p_src)[2]) << 16) | (((UINT64)(p_src)[3]) << 24) | \
(((UINT64)(p_src)[4]) << 32) | (((UINT64)(p_src)[5]) << 40) | \
(((UINT64)(p_src)[6]) << 48) | (((UINT64)(p_src)[7]) << 56) )
#define SET16(p_dst,src) \
do { \
(p_dst)[0]=(UINT8)(src); \
(p_dst)[1]=(UINT8)(((UINT16)(src)) >> 8); \
} while (0)
#define SET32(p_dst,src) \
do { \
(p_dst)[0]=(UINT8)(src); \
(p_dst)[1]=(UINT8)(((UINT32)(src)) >> 8); \
(p_dst)[2]=(UINT8)(((UINT32)(src)) >> 16); \
(p_dst)[3]=(UINT8)(((UINT32)(src)) >> 24); \
} while (0)
#define SET64(p_dst,src) \
do { \
(p_dst)[0]=(UINT8)(src); \
(p_dst)[1]=(UINT8)(((UINT64)(src)) >> 8); \
(p_dst)[2]=(UINT8)(((UINT64)(src)) >> 16); \
(p_dst)[3]=(UINT8)(((UINT64)(src)) >> 24); \
(p_dst)[4]=(UINT8)(((UINT64)(src)) >> 32); \
(p_dst)[5]=(UINT8)(((UINT64)(src)) >> 40); \
(p_dst)[6]=(UINT8)(((UINT64)(src)) >> 48); \
(p_dst)[7]=(UINT8)(((UINT64)(src)) >> 56); \
} while (0)
#if (FFS_CONFIG_LITTLE_ENDIAN == 1)
#define GET16_A(p_src) (*((UINT16 *)(p_src)))
#define GET32_A(p_src) (*((UINT32 *)(p_src)))
#define GET64_A(p_src) (*((UINT64 *)(p_src)))
#define SET16_A(p_dst,src) *((UINT16 *)(p_dst)) = (UINT16)(src)
#define SET32_A(p_dst,src) *((UINT32 *)(p_dst)) = (UINT32)(src)
#define SET64_A(p_dst,src) *((UINT64 *)(p_dst)) = (UINT64)(src)
#else
#define GET16_A(p_src) GET16(p_src)
#define GET32_A(p_src) GET32(p_src)
#define GET64_A(p_src) GET64(p_src)
#define SET16_A(p_dst,src) SET16(p_dst, src)
#define SET32_A(p_dst,src) SET32(p_dst, src)
#define SET64_A(p_dst,src) SET64(p_dst, src)
#endif
#define HIGH_INDEX_BIT (8)
#define HIGH_INDEX_MASK (0xFF00)
#define LOW_INDEX_BIT (16-HIGH_INDEX_BIT)
#define UTBL_ROW_COUNT (1<<LOW_INDEX_BIT)
#define UTBL_COL_COUNT (1<<HIGH_INDEX_BIT)
static inline UINT16 get_col_index(UINT16 i)
{
return i >> LOW_INDEX_BIT;
}
static inline UINT16 get_row_index(UINT16 i)
{
return i & ~HIGH_INDEX_MASK;
}
typedef struct {
UINT8 jmp_boot[3];
UINT8 oem_name[8];
UINT8 bpb[109];
UINT8 boot_code[390];
UINT8 signature[2];
} PBR_SECTOR_T;
typedef struct {
UINT8 sector_size[2];
UINT8 sectors_per_clu;
UINT8 num_reserved[2];
UINT8 num_fats;
UINT8 num_root_entries[2];
UINT8 num_sectors[2];
UINT8 media_type;
UINT8 num_fat_sectors[2];
UINT8 sectors_in_track[2];
UINT8 num_heads[2];
UINT8 num_hid_sectors[4];
UINT8 num_huge_sectors[4];
UINT8 phy_drv_no;
UINT8 reserved;
UINT8 ext_signature;
UINT8 vol_serial[4];
UINT8 vol_label[11];
UINT8 vol_type[8];
} BPB16_T;
typedef struct {
UINT8 sector_size[2];
UINT8 sectors_per_clu;
UINT8 num_reserved[2];
UINT8 num_fats;
UINT8 num_root_entries[2];
UINT8 num_sectors[2];
UINT8 media_type;
UINT8 num_fat_sectors[2];
UINT8 sectors_in_track[2];
UINT8 num_heads[2];
UINT8 num_hid_sectors[4];
UINT8 num_huge_sectors[4];
UINT8 num_fat32_sectors[4];
UINT8 ext_flags[2];
UINT8 fs_version[2];
UINT8 root_cluster[4];
UINT8 fsinfo_sector[2];
UINT8 backup_sector[2];
UINT8 reserved[12];
UINT8 phy_drv_no;
UINT8 ext_reserved;
UINT8 ext_signature;
UINT8 vol_serial[4];
UINT8 vol_label[11];
UINT8 vol_type[8];
} BPB32_T;
typedef struct {
UINT8 reserved1[53];
UINT8 vol_offset[8];
UINT8 vol_length[8];
UINT8 fat_offset[4];
UINT8 fat_length[4];
UINT8 clu_offset[4];
UINT8 clu_count[4];
UINT8 root_cluster[4];
UINT8 vol_serial[4];
UINT8 fs_version[2];
UINT8 vol_flags[2];
UINT8 sector_size_bits;
UINT8 sectors_per_clu_bits;
UINT8 num_fats;
UINT8 phy_drv_no;
UINT8 perc_in_use;
UINT8 reserved2[7];
} BPBEX_T;
typedef struct {
UINT8 signature1[4];
UINT8 reserved1[480];
UINT8 signature2[4];
UINT8 free_cluster[4];
UINT8 next_cluster[4];
UINT8 reserved2[14];
UINT8 signature3[2];
} FSI_SECTOR_T;
typedef struct {
UINT8 dummy[32];
} DENTRY_T;
typedef struct {
UINT8 name[DOS_NAME_LENGTH];
UINT8 attr;
UINT8 lcase;
UINT8 create_time_ms;
UINT8 create_time[2];
UINT8 create_date[2];
UINT8 access_date[2];
UINT8 start_clu_hi[2];
UINT8 modify_time[2];
UINT8 modify_date[2];
UINT8 start_clu_lo[2];
UINT8 size[4];
} DOS_DENTRY_T;
typedef struct {
UINT8 order;
UINT8 unicode_0_4[10];
UINT8 attr;
UINT8 sysid;
UINT8 checksum;
UINT8 unicode_5_10[12];
UINT8 start_clu[2];
UINT8 unicode_11_12[4];
} EXT_DENTRY_T;
typedef struct {
UINT8 type;
UINT8 num_ext;
UINT8 checksum[2];
UINT8 attr[2];
UINT8 reserved1[2];
UINT8 create_time[2];
UINT8 create_date[2];
UINT8 modify_time[2];
UINT8 modify_date[2];
UINT8 access_time[2];
UINT8 access_date[2];
UINT8 create_time_ms;
UINT8 modify_time_ms;
UINT8 access_time_ms;
UINT8 reserved2[9];
} FILE_DENTRY_T;
typedef struct {
UINT8 type;
UINT8 flags;
UINT8 reserved1;
UINT8 name_len;
UINT8 name_hash[2];
UINT8 reserved2[2];
UINT8 valid_size[8];
UINT8 reserved3[4];
UINT8 start_clu[4];
UINT8 size[8];
} STRM_DENTRY_T;
typedef struct {
UINT8 type;
UINT8 flags;
UINT8 unicode_0_14[30];
} NAME_DENTRY_T;
typedef struct {
UINT8 type;
UINT8 flags;
UINT8 reserved[18];
UINT8 start_clu[4];
UINT8 size[8];
} BMAP_DENTRY_T;
typedef struct {
UINT8 type;
UINT8 reserved1[3];
UINT8 checksum[4];
UINT8 reserved2[12];
UINT8 start_clu[4];
UINT8 size[8];
} CASE_DENTRY_T;
typedef struct {
UINT8 type;
UINT8 label_len;
UINT8 unicode_0_10[22];
UINT8 reserved[8];
} VOLM_DENTRY_T;
typedef struct {
UINT32 dir;
INT32 entry;
CHAIN_T clu;
} UENTRY_T;
typedef struct __FS_STRUCT_T {
UINT32 mounted;
struct super_block *sb;
struct semaphore v_sem;
} FS_STRUCT_T;
typedef struct {
INT32 (*alloc_cluster)(struct super_block *sb, INT32 num_alloc, CHAIN_T *p_chain);
void (*free_cluster)(struct super_block *sb, CHAIN_T *p_chain, INT32 do_relse);
INT32 (*count_used_clusters)(struct super_block *sb);
INT32 (*init_dir_entry)(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, UINT32 type,
UINT32 start_clu, UINT64 size);
INT32 (*init_ext_entry)(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, INT32 num_entries,
UNI_NAME_T *p_uniname, DOS_NAME_T *p_dosname);
INT32 (*find_dir_entry)(struct super_block *sb, CHAIN_T *p_dir, UNI_NAME_T *p_uniname, INT32 num_entries, DOS_NAME_T *p_dosname, UINT32 type);
void (*delete_dir_entry)(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, INT32 offset, INT32 num_entries);
void (*get_uni_name_from_ext_entry)(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, UINT16 *uniname);
INT32 (*count_ext_entries)(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, DENTRY_T *p_entry);
INT32 (*calc_num_entries)(UNI_NAME_T *p_uniname);
UINT32 (*get_entry_type)(DENTRY_T *p_entry);
void (*set_entry_type)(DENTRY_T *p_entry, UINT32 type);
UINT32 (*get_entry_attr)(DENTRY_T *p_entry);
void (*set_entry_attr)(DENTRY_T *p_entry, UINT32 attr);
UINT8 (*get_entry_flag)(DENTRY_T *p_entry);
void (*set_entry_flag)(DENTRY_T *p_entry, UINT8 flag);
UINT32 (*get_entry_clu0)(DENTRY_T *p_entry);
void (*set_entry_clu0)(DENTRY_T *p_entry, UINT32 clu0);
UINT64 (*get_entry_size)(DENTRY_T *p_entry);
void (*set_entry_size)(DENTRY_T *p_entry, UINT64 size);
void (*get_entry_time)(DENTRY_T *p_entry, TIMESTAMP_T *tp, UINT8 mode);
void (*set_entry_time)(DENTRY_T *p_entry, TIMESTAMP_T *tp, UINT8 mode);
} FS_FUNC_T;
typedef struct __FS_INFO_T {
UINT32 drv;
UINT32 vol_type;
UINT32 vol_id;
UINT32 num_sectors;
UINT32 num_clusters;
UINT32 cluster_size;
UINT32 cluster_size_bits;
UINT32 sectors_per_clu;
UINT32 sectors_per_clu_bits;
UINT32 PBR_sector;
UINT32 FAT1_start_sector;
UINT32 FAT2_start_sector;
UINT32 root_start_sector;
UINT32 data_start_sector;
UINT32 num_FAT_sectors;
UINT32 root_dir;
UINT32 dentries_in_root;
UINT32 dentries_per_clu;
UINT32 vol_flag;
struct buffer_head *pbr_bh;
UINT32 map_clu;
UINT32 map_sectors;
struct buffer_head **vol_amap;
UINT16 **vol_utbl;
UINT32 clu_srch_ptr;
UINT32 used_clusters;
UENTRY_T hint_uentry;
UINT32 dev_ejected;
FS_FUNC_T *fs_func;
BUF_CACHE_T FAT_cache_array[FAT_CACHE_SIZE];
BUF_CACHE_T FAT_cache_lru_list;
BUF_CACHE_T FAT_cache_hash_list[FAT_CACHE_HASH_SIZE];
BUF_CACHE_T buf_cache_array[BUF_CACHE_SIZE];
BUF_CACHE_T buf_cache_lru_list;
BUF_CACHE_T buf_cache_hash_list[BUF_CACHE_HASH_SIZE];
} FS_INFO_T;
#define ES_2_ENTRIES 2
#define ES_3_ENTRIES 3
#define ES_ALL_ENTRIES 0
typedef struct {
UINT32 sector;
INT32 offset;
INT32 alloc_flag;
UINT32 num_entries;
void *__buf;
} ENTRY_SET_CACHE_T;
INT32 ffsInit(void);
INT32 ffsShutdown(void);
INT32 ffsMountVol(struct super_block *sb, INT32 drv);
INT32 ffsUmountVol(struct super_block *sb);
INT32 ffsCheckVol(struct super_block *sb);
INT32 ffsGetVolInfo(struct super_block *sb, VOL_INFO_T *info);
INT32 ffsSyncVol(struct super_block *sb, INT32 do_sync);
INT32 ffsLookupFile(struct inode *inode, UINT8 *path, FILE_ID_T *fid);
INT32 ffsCreateFile(struct inode *inode, UINT8 *path, UINT8 mode, FILE_ID_T *fid);
INT32 ffsReadFile(struct inode *inode, FILE_ID_T *fid, void *buffer, UINT64 count, UINT64 *rcount);
INT32 ffsWriteFile(struct inode *inode, FILE_ID_T *fid, void *buffer, UINT64 count, UINT64 *wcount);
INT32 ffsTruncateFile(struct inode *inode, UINT64 old_size, UINT64 new_size);
INT32 ffsMoveFile(struct inode *old_parent_inode, FILE_ID_T *fid, struct inode *new_parent_inode, struct dentry *new_dentry);
INT32 ffsRemoveFile(struct inode *inode, FILE_ID_T *fid);
INT32 ffsSetAttr(struct inode *inode, UINT32 attr);
INT32 ffsGetStat(struct inode *inode, DIR_ENTRY_T *info);
INT32 ffsSetStat(struct inode *inode, DIR_ENTRY_T *info);
INT32 ffsMapCluster(struct inode *inode, INT32 clu_offset, UINT32 *clu);
INT32 ffsCreateDir(struct inode *inode, UINT8 *path, FILE_ID_T *fid);
INT32 ffsReadDir(struct inode *inode, DIR_ENTRY_T *dir_ent);
INT32 ffsRemoveDir(struct inode *inode, FILE_ID_T *fid);
INT32 ffsRemoveEntry(struct inode *inode, FILE_ID_T *fid);
INT32 fs_init(void);
INT32 fs_shutdown(void);
void fs_set_vol_flags(struct super_block *sb, UINT32 new_flag);
void fs_sync(struct super_block *sb, INT32 do_sync);
void fs_error(struct super_block *sb);
INT32 clear_cluster(struct super_block *sb, UINT32 clu);
INT32 fat_alloc_cluster(struct super_block *sb, INT32 num_alloc, CHAIN_T *p_chain);
INT32 exfat_alloc_cluster(struct super_block *sb, INT32 num_alloc, CHAIN_T *p_chain);
void fat_free_cluster(struct super_block *sb, CHAIN_T *p_chain, INT32 do_relse);
void exfat_free_cluster(struct super_block *sb, CHAIN_T *p_chain, INT32 do_relse);
UINT32 find_last_cluster(struct super_block *sb, CHAIN_T *p_chain);
INT32 count_num_clusters(struct super_block *sb, CHAIN_T *dir);
INT32 fat_count_used_clusters(struct super_block *sb);
INT32 exfat_count_used_clusters(struct super_block *sb);
void exfat_chain_cont_cluster(struct super_block *sb, UINT32 chain, INT32 len);
INT32 load_alloc_bitmap(struct super_block *sb);
void free_alloc_bitmap(struct super_block *sb);
INT32 set_alloc_bitmap(struct super_block *sb, UINT32 clu);
INT32 clr_alloc_bitmap(struct super_block *sb, UINT32 clu);
UINT32 test_alloc_bitmap(struct super_block *sb, UINT32 clu);
void sync_alloc_bitmap(struct super_block *sb);
INT32 load_upcase_table(struct super_block *sb);
void free_upcase_table(struct super_block *sb);
UINT32 fat_get_entry_type(DENTRY_T *p_entry);
UINT32 exfat_get_entry_type(DENTRY_T *p_entry);
void fat_set_entry_type(DENTRY_T *p_entry, UINT32 type);
void exfat_set_entry_type(DENTRY_T *p_entry, UINT32 type);
UINT32 fat_get_entry_attr(DENTRY_T *p_entry);
UINT32 exfat_get_entry_attr(DENTRY_T *p_entry);
void fat_set_entry_attr(DENTRY_T *p_entry, UINT32 attr);
void exfat_set_entry_attr(DENTRY_T *p_entry, UINT32 attr);
UINT8 fat_get_entry_flag(DENTRY_T *p_entry);
UINT8 exfat_get_entry_flag(DENTRY_T *p_entry);
void fat_set_entry_flag(DENTRY_T *p_entry, UINT8 flag);
void exfat_set_entry_flag(DENTRY_T *p_entry, UINT8 flag);
UINT32 fat_get_entry_clu0(DENTRY_T *p_entry);
UINT32 exfat_get_entry_clu0(DENTRY_T *p_entry);
void fat_set_entry_clu0(DENTRY_T *p_entry, UINT32 start_clu);
void exfat_set_entry_clu0(DENTRY_T *p_entry, UINT32 start_clu);
UINT64 fat_get_entry_size(DENTRY_T *p_entry);
UINT64 exfat_get_entry_size(DENTRY_T *p_entry);
void fat_set_entry_size(DENTRY_T *p_entry, UINT64 size);
void exfat_set_entry_size(DENTRY_T *p_entry, UINT64 size);
void fat_get_entry_time(DENTRY_T *p_entry, TIMESTAMP_T *tp, UINT8 mode);
void exfat_get_entry_time(DENTRY_T *p_entry, TIMESTAMP_T *tp, UINT8 mode);
void fat_set_entry_time(DENTRY_T *p_entry, TIMESTAMP_T *tp, UINT8 mode);
void exfat_set_entry_time(DENTRY_T *p_entry, TIMESTAMP_T *tp, UINT8 mode);
INT32 fat_init_dir_entry(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, UINT32 type, UINT32 start_clu, UINT64 size);
INT32 exfat_init_dir_entry(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, UINT32 type, UINT32 start_clu, UINT64 size);
INT32 fat_init_ext_dir_entry(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, INT32 num_entries, UNI_NAME_T *p_uniname, DOS_NAME_T *p_dosname);
INT32 exfat_init_ext_dir_entry(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, INT32 num_entries, UNI_NAME_T *p_uniname, DOS_NAME_T *p_dosname);
void init_dos_entry(DOS_DENTRY_T *ep, UINT32 type, UINT32 start_clu, UINT8 tz_utc);
void init_ext_entry(EXT_DENTRY_T *ep, INT32 order, UINT8 chksum, UINT16 *uniname);
void init_file_entry(FILE_DENTRY_T *ep, UINT32 type, UINT8 tz_utc);
void init_strm_entry(STRM_DENTRY_T *ep, UINT8 flags, UINT32 start_clu, UINT64 size);
void init_name_entry(NAME_DENTRY_T *ep, UINT16 *uniname);
void fat_delete_dir_entry(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, INT32 order, INT32 num_entries);
void exfat_delete_dir_entry(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, INT32 order, INT32 num_entries);
INT32 find_location(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, UINT32 *sector, INT32 *offset);
DENTRY_T *get_entry_with_sector(struct super_block *sb, UINT32 sector, INT32 offset);
DENTRY_T *get_entry_in_dir(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, UINT32 *sector);
ENTRY_SET_CACHE_T *get_entry_set_in_dir (struct super_block *sb, CHAIN_T *p_dir, INT32 entry, UINT32 type, DENTRY_T **file_ep);
void release_entry_set (ENTRY_SET_CACHE_T *es);
INT32 write_whole_entry_set (struct super_block *sb, ENTRY_SET_CACHE_T *es);
INT32 write_partial_entries_in_entry_set (struct super_block *sb, ENTRY_SET_CACHE_T *es, DENTRY_T *ep, UINT32 count);
INT32 search_deleted_or_unused_entry(struct super_block *sb, CHAIN_T *p_dir, INT32 num_entries);
INT32 find_empty_entry(struct inode *inode, CHAIN_T *p_dir, INT32 num_entries);
INT32 fat_find_dir_entry(struct super_block *sb, CHAIN_T *p_dir, UNI_NAME_T *p_uniname, INT32 num_entries, DOS_NAME_T *p_dosname, UINT32 type);
INT32 exfat_find_dir_entry(struct super_block *sb, CHAIN_T *p_dir, UNI_NAME_T *p_uniname, INT32 num_entries, DOS_NAME_T *p_dosname, UINT32 type);
INT32 fat_count_ext_entries(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, DENTRY_T *p_entry);
INT32 exfat_count_ext_entries(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, DENTRY_T *p_entry);
INT32 count_dos_name_entries(struct super_block *sb, CHAIN_T *p_dir, UINT32 type);
void update_dir_checksum(struct super_block *sb, CHAIN_T *p_dir, INT32 entry);
void update_dir_checksum_with_entry_set (struct super_block *sb, ENTRY_SET_CACHE_T *es);
BOOL is_dir_empty(struct super_block *sb, CHAIN_T *p_dir);
INT32 get_num_entries_and_dos_name(struct super_block *sb, CHAIN_T *p_dir, UNI_NAME_T *p_uniname, INT32 *entries, DOS_NAME_T *p_dosname);
void get_uni_name_from_dos_entry(struct super_block *sb, DOS_DENTRY_T *ep, UNI_NAME_T *p_uniname, UINT8 mode);
void fat_get_uni_name_from_ext_entry(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, UINT16 *uniname);
void exfat_get_uni_name_from_ext_entry(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, UINT16 *uniname);
INT32 extract_uni_name_from_ext_entry(EXT_DENTRY_T *ep, UINT16 *uniname, INT32 order);
INT32 extract_uni_name_from_name_entry(NAME_DENTRY_T *ep, UINT16 *uniname, INT32 order);
INT32 fat_generate_dos_name(struct super_block *sb, CHAIN_T *p_dir, DOS_NAME_T *p_dosname);
void fat_attach_count_to_dos_name(UINT8 *dosname, INT32 count);
INT32 fat_calc_num_entries(UNI_NAME_T *p_uniname);
INT32 exfat_calc_num_entries(UNI_NAME_T *p_uniname);
UINT8 calc_checksum_1byte(void *data, INT32 len, UINT8 chksum);
UINT16 calc_checksum_2byte(void *data, INT32 len, UINT16 chksum, INT32 type);
UINT32 calc_checksum_4byte(void *data, INT32 len, UINT32 chksum, INT32 type);
INT32 resolve_path(struct inode *inode, UINT8 *path, CHAIN_T *p_dir, UNI_NAME_T *p_uniname);
INT32 resolve_name(UINT8 *name, UINT8 **arg);
INT32 fat16_mount(struct super_block *sb, PBR_SECTOR_T *p_pbr);
INT32 fat32_mount(struct super_block *sb, PBR_SECTOR_T *p_pbr);
INT32 exfat_mount(struct super_block *sb, PBR_SECTOR_T *p_pbr);
INT32 create_dir(struct inode *inode, CHAIN_T *p_dir, UNI_NAME_T *p_uniname, FILE_ID_T *fid);
INT32 create_file(struct inode *inode, CHAIN_T *p_dir, UNI_NAME_T *p_uniname, UINT8 mode, FILE_ID_T *fid);
void remove_file(struct inode *inode, CHAIN_T *p_dir, INT32 entry);
INT32 rename_file(struct inode *inode, CHAIN_T *p_dir, INT32 old_entry, UNI_NAME_T *p_uniname, FILE_ID_T *fid);
INT32 move_file(struct inode *inode, CHAIN_T *p_olddir, INT32 oldentry, CHAIN_T *p_newdir, UNI_NAME_T *p_uniname, FILE_ID_T *fid);
INT32 sector_read(struct super_block *sb, UINT32 sec, struct buffer_head **bh, INT32 read);
INT32 sector_write(struct super_block *sb, UINT32 sec, struct buffer_head *bh, INT32 sync);
INT32 multi_sector_read(struct super_block *sb, UINT32 sec, struct buffer_head **bh, INT32 num_secs, INT32 read);
INT32 multi_sector_write(struct super_block *sb, UINT32 sec, struct buffer_head *bh, INT32 num_secs, INT32 sync);
#ifdef __cplusplus
}
#endif
#endif
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