fs/exfat/exfat.h

   1 /*
   2  *  Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
   3  *
   4  *  This program is free software; you can redistribute it and/or
   5  *  modify it under the terms of the GNU General Public License
   6  *  as published by the Free Software Foundation; either version 2
   7  *  of the License, or (at your option) any later version.
   8  *
   9  *  This program is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *  GNU General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU General Public License
  15  *  along with this program; if not, write to the Free Software
  16  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17  */
  18
  19 #ifndef _EXFAT_H
  20 #define _EXFAT_H
  21
  22 #include "exfat_config.h"
  23 #include "exfat_global.h"
  24 #include "exfat_data.h"
  25 #include "exfat_oal.h"
  26
  27 #include "exfat_blkdev.h"
  28 #include "exfat_cache.h"
  29 #include "exfat_nls.h"
  30 #include "exfat_api.h"
  31 #include "exfat_cache.h"
  32
  33 #ifdef __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 #if EXFAT_CONFIG_KERNEL_DEBUG
  38 #define EXFAT_IOC_GET_DEBUGFLAGS       _IOR('f', 100, long)
  39 #define EXFAT_IOC_SET_DEBUGFLAGS       _IOW('f', 101, long)
  40
  41 #define EXFAT_DEBUGFLAGS_INVALID_UMOUNT        0x01
  42 #define EXFAT_DEBUGFLAGS_ERROR_RW              0x02
  43 #endif
  44
  45 #define MAX_VOLUME              4
  46
  47 #define DENTRY_SIZE             32
  48 #define DENTRY_SIZE_BITS        5
  49
  50 #define PBR_SIGNATURE           0xAA55
  51 #define EXT_SIGNATURE           0xAA550000
  52 #define VOL_LABEL               "NO NAME    "
  53 #define OEM_NAME                "MSWIN4.1"
  54 #define STR_FAT12               "FAT12   "
  55 #define STR_FAT16               "FAT16   "
  56 #define STR_FAT32               "FAT32   "
  57 #define STR_EXFAT               "EXFAT   "
  58 #define VOL_CLEAN               0x0000
  59 #define VOL_DIRTY               0x0002
  60
  61 #define FAT12_THRESHOLD         4087
  62 #define FAT16_THRESHOLD         65527
  63 #define FAT32_THRESHOLD         268435457
  64 #define EXFAT_THRESHOLD         268435457
  65
  66 #define TYPE_UNUSED             0x0000
  67 #define TYPE_DELETED            0x0001
  68 #define TYPE_INVALID            0x0002
  69 #define TYPE_CRITICAL_PRI       0x0100
  70 #define TYPE_BITMAP             0x0101
  71 #define TYPE_UPCASE             0x0102
  72 #define TYPE_VOLUME             0x0103
  73 #define TYPE_DIR                0x0104
  74 #define TYPE_FILE               0x011F
  75 #define TYPE_SYMLINK            0x015F
  76 #define TYPE_CRITICAL_SEC       0x0200
  77 #define TYPE_STREAM             0x0201
  78 #define TYPE_EXTEND             0x0202
  79 #define TYPE_ACL                0x0203
  80 #define TYPE_BENIGN_PRI         0x0400
  81 #define TYPE_GUID               0x0401
  82 #define TYPE_PADDING            0x0402
  83 #define TYPE_ACLTAB             0x0403
  84 #define TYPE_BENIGN_SEC         0x0800
  85 #define TYPE_ALL                0x0FFF
  86
  87 #define TM_CREATE               0
  88 #define TM_MODIFY               1
  89 #define TM_ACCESS               2
  90
  91 #define CS_DIR_ENTRY            0
  92 #define CS_PBR_SECTOR           1
  93 #define CS_DEFAULT              2
  94
  95 #define DIR_DELETED             0xFFFF0321
  96
  97 #define CLUSTER_16(x)           ((UINT16)(x))
  98 #define CLUSTER_32(x)           ((UINT32)(x))
  99
 100 #define START_SECTOR(x) \
 101         ( (((x)-2) << p_fs->sectors_per_clu_bits) + p_fs->data_start_sector )
 102
 103 #define IS_LAST_SECTOR_IN_CLUSTER(sec) \
 104                 ( (((sec) -  p_fs->data_start_sector + 1) & ((1 <<  p_fs->sectors_per_clu_bits) -1)) == 0)
 105
 106 #define GET_CLUSTER_FROM_SECTOR(sec)                    \
 107                 ((((sec) -  p_fs->data_start_sector) >> p_fs->sectors_per_clu_bits) +2)
 108
 109 #define GET16(p_src) \
 110         ( ((UINT16)(p_src)[0]) | (((UINT16)(p_src)[1]) << 8) )
 111 #define GET32(p_src) \
 112         ( ((UINT32)(p_src)[0]) | (((UINT32)(p_src)[1]) << 8) | \
 113          (((UINT32)(p_src)[2]) << 16) | (((UINT32)(p_src)[3]) << 24) )
 114 #define GET64(p_src) \
 115         ( ((UINT64)(p_src)[0]) | (((UINT64)(p_src)[1]) << 8) | \
 116          (((UINT64)(p_src)[2]) << 16) | (((UINT64)(p_src)[3]) << 24) | \
 117          (((UINT64)(p_src)[4]) << 32) | (((UINT64)(p_src)[5]) << 40) | \
 118          (((UINT64)(p_src)[6]) << 48) | (((UINT64)(p_src)[7]) << 56) )
 119
 120
 121 #define SET16(p_dst,src)                                  \
 122         do {                                              \
 123             (p_dst)[0]=(UINT8)(src);                      \
 124             (p_dst)[1]=(UINT8)(((UINT16)(src)) >> 8);     \
 125         } while (0)
 126 #define SET32(p_dst,src)                                  \
 127         do {                                              \
 128             (p_dst)[0]=(UINT8)(src);                      \
 129             (p_dst)[1]=(UINT8)(((UINT32)(src)) >> 8);     \
 130             (p_dst)[2]=(UINT8)(((UINT32)(src)) >> 16);    \
 131             (p_dst)[3]=(UINT8)(((UINT32)(src)) >> 24);    \
 132         } while (0)
 133 #define SET64(p_dst,src)                                  \
 134         do {                                              \
 135             (p_dst)[0]=(UINT8)(src);                      \
 136             (p_dst)[1]=(UINT8)(((UINT64)(src)) >> 8);     \
 137             (p_dst)[2]=(UINT8)(((UINT64)(src)) >> 16);    \
 138             (p_dst)[3]=(UINT8)(((UINT64)(src)) >> 24);    \
 139             (p_dst)[4]=(UINT8)(((UINT64)(src)) >> 32);    \
 140             (p_dst)[5]=(UINT8)(((UINT64)(src)) >> 40);    \
 141             (p_dst)[6]=(UINT8)(((UINT64)(src)) >> 48);    \
 142             (p_dst)[7]=(UINT8)(((UINT64)(src)) >> 56);    \
 143         } while (0)
 144
 145 #if (FFS_CONFIG_LITTLE_ENDIAN == 1)
 146 #define GET16_A(p_src)          (*((UINT16 *)(p_src)))
 147 #define GET32_A(p_src)          (*((UINT32 *)(p_src)))
 148 #define GET64_A(p_src)          (*((UINT64 *)(p_src)))
 149 #define SET16_A(p_dst,src)      *((UINT16 *)(p_dst)) = (UINT16)(src)
 150 #define SET32_A(p_dst,src)      *((UINT32 *)(p_dst)) = (UINT32)(src)
 151 #define SET64_A(p_dst,src)      *((UINT64 *)(p_dst)) = (UINT64)(src)
 152 #else
 153 #define GET16_A(p_src)          GET16(p_src)
 154 #define GET32_A(p_src)          GET32(p_src)
 155 #define GET64_A(p_src)          GET64(p_src)
 156 #define SET16_A(p_dst,src)      SET16(p_dst, src)
 157 #define SET32_A(p_dst,src)      SET32(p_dst, src)
 158 #define SET64_A(p_dst,src)      SET64(p_dst, src)
 159 #endif
 160
 161 #define HIGH_INDEX_BIT (8)
 162 #define HIGH_INDEX_MASK (0xFF00)
 163 #define LOW_INDEX_BIT (16-HIGH_INDEX_BIT)
 164 #define UTBL_ROW_COUNT (1<<LOW_INDEX_BIT)
 165 #define UTBL_COL_COUNT (1<<HIGH_INDEX_BIT)
 166
 167         static inline UINT16 get_col_index(UINT16 i)
 168         {
 169                 return i >> LOW_INDEX_BIT;
 170         }
 171         static inline UINT16 get_row_index(UINT16 i)
 172         {
 173                 return i & ~HIGH_INDEX_MASK;
 174         }
 175
 176         typedef struct {
 177                 UINT8       jmp_boot[3];
 178                 UINT8       oem_name[8];
 179                 UINT8       bpb[109];
 180                 UINT8       boot_code[390];
 181                 UINT8       signature[2];
 182         } PBR_SECTOR_T;
 183
 184         typedef struct {
 185                 UINT8       sector_size[2];
 186                 UINT8       sectors_per_clu;
 187                 UINT8       num_reserved[2];
 188                 UINT8       num_fats;
 189                 UINT8       num_root_entries[2];
 190                 UINT8       num_sectors[2];
 191                 UINT8       media_type;
 192                 UINT8       num_fat_sectors[2];
 193                 UINT8       sectors_in_track[2];
 194                 UINT8       num_heads[2];
 195                 UINT8       num_hid_sectors[4];
 196                 UINT8       num_huge_sectors[4];
 197
 198                 UINT8       phy_drv_no;
 199                 UINT8       reserved;
 200                 UINT8       ext_signature;
 201                 UINT8       vol_serial[4];
 202                 UINT8       vol_label[11];
 203                 UINT8       vol_type[8];
 204         } BPB16_T;
 205
 206         typedef struct {
 207                 UINT8       sector_size[2];
 208                 UINT8       sectors_per_clu;
 209                 UINT8       num_reserved[2];
 210                 UINT8       num_fats;
 211                 UINT8       num_root_entries[2];
 212                 UINT8       num_sectors[2];
 213                 UINT8       media_type;
 214                 UINT8       num_fat_sectors[2];
 215                 UINT8       sectors_in_track[2];
 216                 UINT8       num_heads[2];
 217                 UINT8       num_hid_sectors[4];
 218                 UINT8       num_huge_sectors[4];
 219                 UINT8       num_fat32_sectors[4];
 220                 UINT8       ext_flags[2];
 221                 UINT8       fs_version[2];
 222                 UINT8       root_cluster[4];
 223                 UINT8       fsinfo_sector[2];
 224                 UINT8       backup_sector[2];
 225                 UINT8       reserved[12];
 226
 227                 UINT8       phy_drv_no;
 228                 UINT8       ext_reserved;
 229                 UINT8       ext_signature;
 230                 UINT8       vol_serial[4];
 231                 UINT8       vol_label[11];
 232                 UINT8       vol_type[8];
 233         } BPB32_T;
 234
 235         typedef struct {
 236                 UINT8       reserved1[53];
 237                 UINT8       vol_offset[8];
 238                 UINT8       vol_length[8];
 239                 UINT8       fat_offset[4];
 240                 UINT8       fat_length[4];
 241                 UINT8       clu_offset[4];
 242                 UINT8       clu_count[4];
 243                 UINT8       root_cluster[4];
 244                 UINT8       vol_serial[4];
 245                 UINT8       fs_version[2];
 246                 UINT8       vol_flags[2];
 247                 UINT8       sector_size_bits;
 248                 UINT8       sectors_per_clu_bits;
 249                 UINT8       num_fats;
 250                 UINT8       phy_drv_no;
 251                 UINT8       perc_in_use;
 252                 UINT8       reserved2[7];
 253         } BPBEX_T;
 254
 255         typedef struct {
 256                 UINT8       signature1[4];
 257                 UINT8       reserved1[480];
 258                 UINT8       signature2[4];
 259                 UINT8       free_cluster[4];
 260                 UINT8       next_cluster[4];
 261                 UINT8       reserved2[14];
 262                 UINT8       signature3[2];
 263         } FSI_SECTOR_T;
 264
 265         typedef struct {
 266                 UINT8       dummy[32];
 267         } DENTRY_T;
 268
 269         typedef struct {
 270                 UINT8       name[DOS_NAME_LENGTH];
 271                 UINT8       attr;
 272                 UINT8       lcase;
 273                 UINT8       create_time_ms;
 274                 UINT8       create_time[2];
 275                 UINT8       create_date[2];
 276                 UINT8       access_date[2];
 277                 UINT8       start_clu_hi[2];
 278                 UINT8       modify_time[2];
 279                 UINT8       modify_date[2];
 280                 UINT8       start_clu_lo[2];
 281                 UINT8       size[4];
 282         } DOS_DENTRY_T;
 283
 284         typedef struct {
 285                 UINT8       order;
 286                 UINT8       unicode_0_4[10];
 287                 UINT8       attr;
 288                 UINT8       sysid;
 289                 UINT8       checksum;
 290                 UINT8       unicode_5_10[12];
 291                 UINT8       start_clu[2];
 292                 UINT8       unicode_11_12[4];
 293         } EXT_DENTRY_T;
 294
 295         typedef struct {
 296                 UINT8       type;
 297                 UINT8       num_ext;
 298                 UINT8       checksum[2];
 299                 UINT8       attr[2];
 300                 UINT8       reserved1[2];
 301                 UINT8       create_time[2];
 302                 UINT8       create_date[2];
 303                 UINT8       modify_time[2];
 304                 UINT8       modify_date[2];
 305                 UINT8       access_time[2];
 306                 UINT8       access_date[2];
 307                 UINT8       create_time_ms;
 308                 UINT8       modify_time_ms;
 309                 UINT8       access_time_ms;
 310                 UINT8       reserved2[9];
 311         } FILE_DENTRY_T;
 312
 313         typedef struct {
 314                 UINT8       type;
 315                 UINT8       flags;
 316                 UINT8       reserved1;
 317                 UINT8       name_len;
 318                 UINT8       name_hash[2];
 319                 UINT8       reserved2[2];
 320                 UINT8       valid_size[8];
 321                 UINT8       reserved3[4];
 322                 UINT8       start_clu[4];
 323                 UINT8       size[8];
 324         } STRM_DENTRY_T;
 325
 326         typedef struct {
 327                 UINT8       type;
 328                 UINT8       flags;
 329                 UINT8       unicode_0_14[30];
 330         } NAME_DENTRY_T;
 331
 332         typedef struct {
 333                 UINT8       type;
 334                 UINT8       flags;
 335                 UINT8       reserved[18];
 336                 UINT8       start_clu[4];
 337                 UINT8       size[8];
 338         } BMAP_DENTRY_T;
 339
 340         typedef struct {
 341                 UINT8       type;
 342                 UINT8       reserved1[3];
 343                 UINT8       checksum[4];
 344                 UINT8       reserved2[12];
 345                 UINT8       start_clu[4];
 346                 UINT8       size[8];
 347         } CASE_DENTRY_T;
 348
 349         typedef struct {
 350                 UINT8       type;
 351                 UINT8       label_len;
 352                 UINT8       unicode_0_10[22];
 353                 UINT8       reserved[8];
 354         } VOLM_DENTRY_T;
 355
 356         typedef struct {
 357                 UINT32      dir;
 358                 INT32       entry;
 359                 CHAIN_T     clu;
 360         } UENTRY_T;
 361
 362         typedef struct __FS_STRUCT_T {
 363                 UINT32      mounted;
 364                 struct super_block *sb;
 365                 struct semaphore v_sem;
 366         } FS_STRUCT_T;
 367
 368         typedef struct {
 369                 INT32       (*alloc_cluster)(struct super_block *sb, INT32 num_alloc, CHAIN_T *p_chain);
 370                 void        (*free_cluster)(struct super_block *sb, CHAIN_T *p_chain, INT32 do_relse);
 371                 INT32       (*count_used_clusters)(struct super_block *sb);
 372
 373                 INT32      (*init_dir_entry)(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, UINT32 type,
 374                                                                          UINT32 start_clu, UINT64 size);
 375                 INT32      (*init_ext_entry)(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, INT32 num_entries,
 376                                                                          UNI_NAME_T *p_uniname, DOS_NAME_T *p_dosname);
 377                 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);
 378                 void        (*delete_dir_entry)(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, INT32 offset, INT32 num_entries);
 379                 void        (*get_uni_name_from_ext_entry)(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, UINT16 *uniname);
 380                 INT32       (*count_ext_entries)(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, DENTRY_T *p_entry);
 381                 INT32       (*calc_num_entries)(UNI_NAME_T *p_uniname);
 382
 383                 UINT32      (*get_entry_type)(DENTRY_T *p_entry);
 384                 void        (*set_entry_type)(DENTRY_T *p_entry, UINT32 type);
 385                 UINT32      (*get_entry_attr)(DENTRY_T *p_entry);
 386                 void        (*set_entry_attr)(DENTRY_T *p_entry, UINT32 attr);
 387                 UINT8       (*get_entry_flag)(DENTRY_T *p_entry);
 388                 void        (*set_entry_flag)(DENTRY_T *p_entry, UINT8 flag);
 389                 UINT32      (*get_entry_clu0)(DENTRY_T *p_entry);
 390                 void        (*set_entry_clu0)(DENTRY_T *p_entry, UINT32 clu0);
 391                 UINT64      (*get_entry_size)(DENTRY_T *p_entry);
 392                 void        (*set_entry_size)(DENTRY_T *p_entry, UINT64 size);
 393                 void        (*get_entry_time)(DENTRY_T *p_entry, TIMESTAMP_T *tp, UINT8 mode);
 394                 void        (*set_entry_time)(DENTRY_T *p_entry, TIMESTAMP_T *tp, UINT8 mode);
 395         } FS_FUNC_T;
 396
 397         typedef struct __FS_INFO_T {
 398                 UINT32      drv;
 399                 UINT32      vol_type;
 400                 UINT32      vol_id;
 401
 402                 UINT32      num_sectors;
 403                 UINT32      num_clusters;
 404                 UINT32      cluster_size;
 405                 UINT32      cluster_size_bits;
 406                 UINT32      sectors_per_clu;
 407                 UINT32      sectors_per_clu_bits;
 408
 409                 UINT32      PBR_sector;
 410                 UINT32      FAT1_start_sector;
 411                 UINT32      FAT2_start_sector;
 412                 UINT32      root_start_sector;
 413                 UINT32      data_start_sector;
 414                 UINT32      num_FAT_sectors;
 415
 416                 UINT32      root_dir;
 417                 UINT32      dentries_in_root;
 418                 UINT32      dentries_per_clu;
 419
 420                 UINT32      vol_flag;
 421                 struct buffer_head *pbr_bh;
 422
 423                 UINT32      map_clu;
 424                 UINT32      map_sectors;
 425                 struct buffer_head **vol_amap;
 426
 427                 UINT16      **vol_utbl;
 428
 429                 UINT32      clu_srch_ptr;
 430                 UINT32      used_clusters;
 431                 UENTRY_T    hint_uentry;
 432
 433                 UINT32      dev_ejected;
 434
 435                 FS_FUNC_T       *fs_func;
 436
 437                 BUF_CACHE_T FAT_cache_array[FAT_CACHE_SIZE];
 438                 BUF_CACHE_T FAT_cache_lru_list;
 439                 BUF_CACHE_T FAT_cache_hash_list[FAT_CACHE_HASH_SIZE];
 440
 441                 BUF_CACHE_T buf_cache_array[BUF_CACHE_SIZE];
 442                 BUF_CACHE_T buf_cache_lru_list;
 443                 BUF_CACHE_T buf_cache_hash_list[BUF_CACHE_HASH_SIZE];
 444         } FS_INFO_T;
 445
 446 #define ES_2_ENTRIES            2
 447 #define ES_3_ENTRIES            3
 448 #define ES_ALL_ENTRIES  0
 449
 450         typedef struct {
 451                 UINT32  sector;
 452                 INT32   offset;
 453                 INT32   alloc_flag;
 454                 UINT32 num_entries;
 455
 456                 void *__buf;
 457         } ENTRY_SET_CACHE_T;
 458
 459         INT32 ffsInit(void);
 460         INT32 ffsShutdown(void);
 461
 462         INT32 ffsMountVol(struct super_block *sb, INT32 drv);
 463         INT32 ffsUmountVol(struct super_block *sb);
 464         INT32 ffsCheckVol(struct super_block *sb);
 465         INT32 ffsGetVolInfo(struct super_block *sb, VOL_INFO_T *info);
 466         INT32 ffsSyncVol(struct super_block *sb, INT32 do_sync);
 467
 468         INT32 ffsLookupFile(struct inode *inode, UINT8 *path, FILE_ID_T *fid);
 469         INT32 ffsCreateFile(struct inode *inode, UINT8 *path, UINT8 mode, FILE_ID_T *fid);
 470         INT32 ffsReadFile(struct inode *inode, FILE_ID_T *fid, void *buffer, UINT64 count, UINT64 *rcount);
 471         INT32 ffsWriteFile(struct inode *inode, FILE_ID_T *fid, void *buffer, UINT64 count, UINT64 *wcount);
 472         INT32 ffsTruncateFile(struct inode *inode, UINT64 old_size, UINT64 new_size);
 473         INT32 ffsMoveFile(struct inode *old_parent_inode, FILE_ID_T *fid, struct inode *new_parent_inode, struct dentry *new_dentry);
 474         INT32 ffsRemoveFile(struct inode *inode, FILE_ID_T *fid);
 475         INT32 ffsSetAttr(struct inode *inode, UINT32 attr);
 476         INT32 ffsGetStat(struct inode *inode, DIR_ENTRY_T *info);
 477         INT32 ffsSetStat(struct inode *inode, DIR_ENTRY_T *info);
 478         INT32 ffsMapCluster(struct inode *inode, INT32 clu_offset, UINT32 *clu);
 479
 480         INT32 ffsCreateDir(struct inode *inode, UINT8 *path, FILE_ID_T *fid);
 481         INT32 ffsReadDir(struct inode *inode, DIR_ENTRY_T *dir_ent);
 482         INT32 ffsRemoveDir(struct inode *inode, FILE_ID_T *fid);
 483         INT32 ffsRemoveEntry(struct inode *inode, FILE_ID_T *fid);
 484
 485         INT32  fs_init(void);
 486         INT32  fs_shutdown(void);
 487         void   fs_set_vol_flags(struct super_block *sb, UINT32 new_flag);
 488         void   fs_sync(struct super_block *sb, INT32 do_sync);
 489         void   fs_error(struct super_block *sb);
 490
 491         INT32   clear_cluster(struct super_block *sb, UINT32 clu);
 492         INT32  fat_alloc_cluster(struct super_block *sb, INT32 num_alloc, CHAIN_T *p_chain);
 493         INT32  exfat_alloc_cluster(struct super_block *sb, INT32 num_alloc, CHAIN_T *p_chain);
 494         void   fat_free_cluster(struct super_block *sb, CHAIN_T *p_chain, INT32 do_relse);
 495         void   exfat_free_cluster(struct super_block *sb, CHAIN_T *p_chain, INT32 do_relse);
 496         UINT32 find_last_cluster(struct super_block *sb, CHAIN_T *p_chain);
 497         INT32  count_num_clusters(struct super_block *sb, CHAIN_T *dir);
 498         INT32  fat_count_used_clusters(struct super_block *sb);
 499         INT32  exfat_count_used_clusters(struct super_block *sb);
 500         void   exfat_chain_cont_cluster(struct super_block *sb, UINT32 chain, INT32 len);
 501
 502         INT32  load_alloc_bitmap(struct super_block *sb);
 503         void   free_alloc_bitmap(struct super_block *sb);
 504         INT32   set_alloc_bitmap(struct super_block *sb, UINT32 clu);
 505         INT32   clr_alloc_bitmap(struct super_block *sb, UINT32 clu);
 506         UINT32 test_alloc_bitmap(struct super_block *sb, UINT32 clu);
 507         void   sync_alloc_bitmap(struct super_block *sb);
 508
 509         INT32  load_upcase_table(struct super_block *sb);
 510         void   free_upcase_table(struct super_block *sb);
 511
 512         UINT32 fat_get_entry_type(DENTRY_T *p_entry);
 513         UINT32 exfat_get_entry_type(DENTRY_T *p_entry);
 514         void   fat_set_entry_type(DENTRY_T *p_entry, UINT32 type);
 515         void   exfat_set_entry_type(DENTRY_T *p_entry, UINT32 type);
 516         UINT32 fat_get_entry_attr(DENTRY_T *p_entry);
 517         UINT32 exfat_get_entry_attr(DENTRY_T *p_entry);
 518         void   fat_set_entry_attr(DENTRY_T *p_entry, UINT32 attr);
 519         void   exfat_set_entry_attr(DENTRY_T *p_entry, UINT32 attr);
 520         UINT8  fat_get_entry_flag(DENTRY_T *p_entry);
 521         UINT8  exfat_get_entry_flag(DENTRY_T *p_entry);
 522         void   fat_set_entry_flag(DENTRY_T *p_entry, UINT8 flag);
 523         void   exfat_set_entry_flag(DENTRY_T *p_entry, UINT8 flag);
 524         UINT32 fat_get_entry_clu0(DENTRY_T *p_entry);
 525         UINT32 exfat_get_entry_clu0(DENTRY_T *p_entry);
 526         void   fat_set_entry_clu0(DENTRY_T *p_entry, UINT32 start_clu);
 527         void   exfat_set_entry_clu0(DENTRY_T *p_entry, UINT32 start_clu);
 528         UINT64 fat_get_entry_size(DENTRY_T *p_entry);
 529         UINT64 exfat_get_entry_size(DENTRY_T *p_entry);
 530         void   fat_set_entry_size(DENTRY_T *p_entry, UINT64 size);
 531         void   exfat_set_entry_size(DENTRY_T *p_entry, UINT64 size);
 532         void   fat_get_entry_time(DENTRY_T *p_entry, TIMESTAMP_T *tp, UINT8 mode);
 533         void   exfat_get_entry_time(DENTRY_T *p_entry, TIMESTAMP_T *tp, UINT8 mode);
 534         void   fat_set_entry_time(DENTRY_T *p_entry, TIMESTAMP_T *tp, UINT8 mode);
 535         void   exfat_set_entry_time(DENTRY_T *p_entry, TIMESTAMP_T *tp, UINT8 mode);
 536         INT32   fat_init_dir_entry(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, UINT32 type, UINT32 start_clu, UINT64 size);
 537         INT32   exfat_init_dir_entry(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, UINT32 type, UINT32 start_clu, UINT64 size);
 538         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);
 539         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);
 540         void   init_dos_entry(DOS_DENTRY_T *ep, UINT32 type, UINT32 start_clu, UINT8 tz_utc);
 541         void   init_ext_entry(EXT_DENTRY_T *ep, INT32 order, UINT8 chksum, UINT16 *uniname);
 542         void   init_file_entry(FILE_DENTRY_T *ep, UINT32 type, UINT8 tz_utc);
 543         void   init_strm_entry(STRM_DENTRY_T *ep, UINT8 flags, UINT32 start_clu, UINT64 size);
 544         void   init_name_entry(NAME_DENTRY_T *ep, UINT16 *uniname);
 545         void   fat_delete_dir_entry(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, INT32 order, INT32 num_entries);
 546         void   exfat_delete_dir_entry(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, INT32 order, INT32 num_entries);
 547
 548         INT32   find_location(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, UINT32 *sector, INT32 *offset);
 549         DENTRY_T *get_entry_with_sector(struct super_block *sb, UINT32 sector, INT32 offset);
 550         DENTRY_T *get_entry_in_dir(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, UINT32 *sector);
 551         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);
 552         void release_entry_set (ENTRY_SET_CACHE_T *es);
 553         INT32 write_whole_entry_set (struct super_block *sb, ENTRY_SET_CACHE_T *es);
 554         INT32 write_partial_entries_in_entry_set (struct super_block *sb, ENTRY_SET_CACHE_T *es, DENTRY_T *ep, UINT32 count);
 555         INT32  search_deleted_or_unused_entry(struct super_block *sb, CHAIN_T *p_dir, INT32 num_entries);
 556         INT32  find_empty_entry(struct inode *inode, CHAIN_T *p_dir, INT32 num_entries);
 557         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);
 558         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);
 559         INT32  fat_count_ext_entries(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, DENTRY_T *p_entry);
 560         INT32  exfat_count_ext_entries(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, DENTRY_T *p_entry);
 561         INT32  count_dos_name_entries(struct super_block *sb, CHAIN_T *p_dir, UINT32 type);
 562         void   update_dir_checksum(struct super_block *sb, CHAIN_T *p_dir, INT32 entry);
 563         void update_dir_checksum_with_entry_set (struct super_block *sb, ENTRY_SET_CACHE_T *es);
 564         BOOL   is_dir_empty(struct super_block *sb, CHAIN_T *p_dir);
 565
 566         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);
 567         void   get_uni_name_from_dos_entry(struct super_block *sb, DOS_DENTRY_T *ep, UNI_NAME_T *p_uniname, UINT8 mode);
 568         void   fat_get_uni_name_from_ext_entry(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, UINT16 *uniname);
 569         void   exfat_get_uni_name_from_ext_entry(struct super_block *sb, CHAIN_T *p_dir, INT32 entry, UINT16 *uniname);
 570         INT32  extract_uni_name_from_ext_entry(EXT_DENTRY_T *ep, UINT16 *uniname, INT32 order);
 571         INT32  extract_uni_name_from_name_entry(NAME_DENTRY_T *ep, UINT16 *uniname, INT32 order);
 572         INT32  fat_generate_dos_name(struct super_block *sb, CHAIN_T *p_dir, DOS_NAME_T *p_dosname);
 573         void   fat_attach_count_to_dos_name(UINT8 *dosname, INT32 count);
 574         INT32  fat_calc_num_entries(UNI_NAME_T *p_uniname);
 575         INT32  exfat_calc_num_entries(UNI_NAME_T *p_uniname);
 576         UINT8  calc_checksum_1byte(void *data, INT32 len, UINT8 chksum);
 577         UINT16 calc_checksum_2byte(void *data, INT32 len, UINT16 chksum, INT32 type);
 578         UINT32 calc_checksum_4byte(void *data, INT32 len, UINT32 chksum, INT32 type);
 579
 580         INT32  resolve_path(struct inode *inode, UINT8 *path, CHAIN_T *p_dir, UNI_NAME_T *p_uniname);
 581         INT32  resolve_name(UINT8 *name, UINT8 **arg);
 582
 583         INT32  fat16_mount(struct super_block *sb, PBR_SECTOR_T *p_pbr);
 584         INT32  fat32_mount(struct super_block *sb, PBR_SECTOR_T *p_pbr);
 585         INT32  exfat_mount(struct super_block *sb, PBR_SECTOR_T *p_pbr);
 586         INT32  create_dir(struct inode *inode, CHAIN_T *p_dir, UNI_NAME_T *p_uniname, FILE_ID_T *fid);
 587         INT32  create_file(struct inode *inode, CHAIN_T *p_dir, UNI_NAME_T *p_uniname, UINT8 mode, FILE_ID_T *fid);
 588         void   remove_file(struct inode *inode, CHAIN_T *p_dir, INT32 entry);
 589         INT32  rename_file(struct inode *inode, CHAIN_T *p_dir, INT32 old_entry, UNI_NAME_T *p_uniname, FILE_ID_T *fid);
 590         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);
 591
 592         INT32   sector_read(struct super_block *sb, UINT32 sec, struct buffer_head **bh, INT32 read);
 593         INT32   sector_write(struct super_block *sb, UINT32 sec, struct buffer_head *bh, INT32 sync);
 594         INT32   multi_sector_read(struct super_block *sb, UINT32 sec, struct buffer_head **bh, INT32 num_secs, INT32 read);
 595         INT32   multi_sector_write(struct super_block *sb, UINT32 sec, struct buffer_head *bh, INT32 num_secs, INT32 sync);
 596
 597 #ifdef __cplusplus
 598 }
 599 #endif
 600
 601 #endif