reactos/drivers/filesystems/fastfat/vfat.h

   1 #include <ntifs.h>
   2 #include <ntdddisk.h>
   3 #include <debug.h>
   4
   5 #include <ccros.h>
   6
   7 #define USE_ROS_CC_AND_FS
   8
   9 #define ROUND_DOWN(n, align) \
  10     (((ULONG)n) & ~((align) - 1l))
  11
  12 #define ROUND_UP(n, align) \
  13     ROUND_DOWN(((ULONG)n) + (align) - 1, (align))
  14
  15 #include <pshpack1.h>
  16 struct _BootSector
  17 {
  18   unsigned char  magic0, res0, magic1;
  19   unsigned char  OEMName[8];
  20   unsigned short BytesPerSector;
  21   unsigned char  SectorsPerCluster;
  22   unsigned short ReservedSectors;
  23   unsigned char  FATCount;
  24   unsigned short RootEntries, Sectors;
  25   unsigned char  Media;
  26   unsigned short FATSectors, SectorsPerTrack, Heads;
  27   unsigned long  HiddenSectors, SectorsHuge;
  28   unsigned char  Drive, Res1, Sig;
  29   unsigned long  VolumeID;
  30   unsigned char  VolumeLabel[11], SysType[8];
  31   unsigned char  Res2[448];
  32   unsigned short Signatur1;
  33 };
  34
  35 struct _BootSector32
  36 {
  37   unsigned char  magic0, res0, magic1;                  // 0
  38   unsigned char  OEMName[8];                            // 3
  39   unsigned short BytesPerSector;                        // 11
  40   unsigned char  SectorsPerCluster;                     // 13
  41   unsigned short ReservedSectors;                       // 14
  42   unsigned char  FATCount;                              // 16
  43   unsigned short RootEntries, Sectors;                  // 17
  44   unsigned char  Media;                                 // 21
  45   unsigned short FATSectors, SectorsPerTrack, Heads;    // 22
  46   unsigned long  HiddenSectors, SectorsHuge;            // 28
  47   unsigned long  FATSectors32;                          // 36
  48   unsigned short ExtFlag;                               // 40
  49   unsigned short FSVersion;                             // 42
  50   unsigned long  RootCluster;                           // 44
  51   unsigned short FSInfoSector;                          // 48
  52   unsigned short BootBackup;                            // 50
  53   unsigned char  Res3[12];                              // 52
  54   unsigned char  Drive;                                 // 64
  55   unsigned char  Res4;                                  // 65
  56   unsigned char  ExtBootSignature;                      // 66
  57   unsigned long  VolumeID;                              // 67
  58   unsigned char  VolumeLabel[11], SysType[8];           // 71
  59   unsigned char  Res2[420];                             // 90
  60   unsigned short Signature1;                            // 510
  61 };
  62
  63 struct _BootSectorFatX
  64 {
  65    unsigned char SysType[4];        // 0
  66    unsigned long VolumeID;          // 4
  67    unsigned long SectorsPerCluster; // 8
  68    unsigned short FATCount;         // 12
  69    unsigned long Unknown;           // 14
  70    unsigned char Unused[4078];      // 18
  71 };
  72
  73 struct _FsInfoSector
  74 {
  75   unsigned long  ExtBootSignature2;                     // 0
  76   unsigned char  Res6[480];                             // 4
  77   unsigned long  FSINFOSignature;                       // 484
  78   unsigned long  FreeCluster;                           // 488
  79   unsigned long  NextCluster;                           // 492
  80   unsigned char  Res7[12];                              // 496
  81   unsigned long  Signatur2;                             // 508
  82 };
  83
  84 typedef struct _BootSector BootSector;
  85
  86 struct _FATDirEntry
  87 {
  88   union
  89   {
  90      struct { unsigned char Filename[8], Ext[3]; };
  91      unsigned char ShortName[11];
  92   };
  93   unsigned char  Attrib;
  94   unsigned char  lCase;
  95   unsigned char  CreationTimeMs;
  96   unsigned short CreationTime,CreationDate,AccessDate;
  97   union
  98   {
  99     unsigned short FirstClusterHigh; // FAT32
 100     unsigned short ExtendedAttributes; // FAT12/FAT16
 101   };
 102   unsigned short UpdateTime;                            //time create/update
 103   unsigned short UpdateDate;                            //date create/update
 104   unsigned short FirstCluster;
 105   unsigned long  FileSize;
 106 };
 107
 108 #define FAT_EAFILE  "EA DATA. SF"
 109
 110 typedef struct _EAFileHeader FAT_EA_FILE_HEADER, *PFAT_EA_FILE_HEADER;
 111
 112 struct _EAFileHeader
 113 {
 114   unsigned short Signature; // ED
 115   unsigned short Unknown[15];
 116   unsigned short EASetTable[240];
 117 };
 118
 119 typedef struct _EASetHeader FAT_EA_SET_HEADER, *PFAT_EA_SET_HEADER;
 120
 121 struct _EASetHeader
 122 {
 123   unsigned short Signature; // EA
 124   unsigned short Offset; // relative offset, same value as in the EASetTable
 125   unsigned short Unknown1[2];
 126   char TargetFileName[12];
 127   unsigned short Unknown2[3];
 128   unsigned int EALength;
 129   // EA Header
 130 };
 131
 132 typedef struct _EAHeader FAT_EA_HEADER, *PFAT_EA_HEADER;
 133
 134 struct _EAHeader
 135 {
 136   unsigned char Unknown;
 137   unsigned char EANameLength;
 138   unsigned short EAValueLength;
 139   // Name Data
 140   // Value Data
 141 };
 142
 143 typedef struct _FATDirEntry FAT_DIR_ENTRY, *PFAT_DIR_ENTRY;
 144
 145 struct _FATXDirEntry
 146 {
 147    unsigned char FilenameLength; // 0
 148    unsigned char Attrib;         // 1
 149    unsigned char Filename[42];   // 2
 150    unsigned long FirstCluster;   // 44
 151    unsigned long FileSize;       // 48
 152    unsigned short UpdateTime;    // 52
 153    unsigned short UpdateDate;    // 54
 154    unsigned short CreationTime;  // 56
 155    unsigned short CreationDate;  // 58
 156    unsigned short AccessTime;    // 60
 157    unsigned short AccessDate;    // 62
 158 };
 159
 160 struct _slot
 161 {
 162   unsigned char id;               // sequence number for slot
 163   WCHAR  name0_4[5];              // first 5 characters in name
 164   unsigned char attr;             // attribute byte
 165   unsigned char reserved;         // always 0
 166   unsigned char alias_checksum;   // checksum for 8.3 alias
 167   WCHAR  name5_10[6];             // 6 more characters in name
 168   unsigned char start[2];         // starting cluster number
 169   WCHAR  name11_12[2];            // last 2 characters in name
 170 };
 171
 172 typedef struct _slot slot;
 173
 174 #include <poppack.h>
 175
 176 #define VFAT_CASE_LOWER_BASE    8               // base is lower case
 177 #define VFAT_CASE_LOWER_EXT     16              // extension is lower case
 178
 179 #define LONGNAME_MAX_LENGTH     256             // max length for a long filename
 180
 181 #define ENTRY_DELETED(DeviceExt, DirEntry) ((DeviceExt)->Flags & VCB_IS_FATX ? FATX_ENTRY_DELETED(&((DirEntry)->FatX)) : FAT_ENTRY_DELETED(&((DirEntry)->Fat)))
 182 #define ENTRY_VOLUME(DeviceExt, DirEntry)  ((DeviceExt)->Flags & VCB_IS_FATX ? FATX_ENTRY_VOLUME(&((DirEntry)->FatX)) : FAT_ENTRY_VOLUME(&((DirEntry)->Fat)))
 183 #define ENTRY_END(DeviceExt, DirEntry)     ((DeviceExt)->Flags & VCB_IS_FATX ? FATX_ENTRY_END(&((DirEntry)->FatX)) : FAT_ENTRY_END(&((DirEntry)->Fat)))
 184
 185 #define FAT_ENTRY_DELETED(DirEntry)  ((DirEntry)->Filename[0] == 0xe5)
 186 #define FAT_ENTRY_END(DirEntry)      ((DirEntry)->Filename[0] == 0)
 187 #define FAT_ENTRY_LONG(DirEntry)     (((DirEntry)->Attrib & 0x3f) == 0x0f)
 188 #define FAT_ENTRY_VOLUME(DirEntry)   (((DirEntry)->Attrib & 0x1f) == 0x08)
 189
 190 #define FATX_ENTRY_DELETED(DirEntry) ((DirEntry)->FilenameLength == 0xe5)
 191 #define FATX_ENTRY_END(DirEntry)     ((DirEntry)->FilenameLength == 0xff)
 192 #define FATX_ENTRY_LONG(DirEntry)    (FALSE)
 193 #define FATX_ENTRY_VOLUME(DirEntry)  (((DirEntry)->Attrib & 0x1f) == 0x08)
 194
 195 #define FAT_ENTRIES_PER_PAGE   (PAGE_SIZE / sizeof (FAT_DIR_ENTRY))
 196 #define FATX_ENTRIES_PER_PAGE  (PAGE_SIZE / sizeof (FATX_DIR_ENTRY))
 197
 198 typedef struct _FATXDirEntry FATX_DIR_ENTRY, *PFATX_DIR_ENTRY;
 199
 200 union _DIR_ENTRY
 201 {
 202    FAT_DIR_ENTRY Fat;
 203    FATX_DIR_ENTRY FatX;
 204 };
 205
 206 typedef union _DIR_ENTRY DIR_ENTRY, *PDIR_ENTRY;
 207
 208 #define BLOCKSIZE 512
 209
 210 #define FAT16  (1)
 211 #define FAT12  (2)
 212 #define FAT32  (3)
 213 #define FATX16 (4)
 214 #define FATX32 (5)
 215
 216 #define VCB_VOLUME_LOCKED       0x0001
 217 #define VCB_DISMOUNT_PENDING    0x0002
 218 #define VCB_IS_FATX             0x0004
 219 #define VCB_IS_DIRTY            0x4000 /* Volume is dirty */
 220 #define VCB_CLEAR_DIRTY         0x8000 /* Clean dirty flag at shutdown */
 221
 222 typedef struct
 223 {
 224   ULONG VolumeID;
 225   ULONG FATStart;
 226   ULONG FATCount;
 227   ULONG FATSectors;
 228   ULONG rootDirectorySectors;
 229   ULONG rootStart;
 230   ULONG dataStart;
 231   ULONG RootCluster;
 232   ULONG SectorsPerCluster;
 233   ULONG BytesPerSector;
 234   ULONG BytesPerCluster;
 235   ULONG NumberOfClusters;
 236   ULONG FatType;
 237   ULONG Sectors;
 238   BOOLEAN FixedMedia;
 239 } FATINFO, *PFATINFO;
 240
 241 struct _VFATFCB;
 242 struct _VFAT_DIRENTRY_CONTEXT;
 243
 244 typedef struct _HASHENTRY
 245 {
 246   ULONG Hash;
 247   struct _VFATFCB* self;
 248   struct _HASHENTRY* next;
 249 }
 250 HASHENTRY;
 251
 252 #define FCB_HASH_TABLE_SIZE 65536
 253
 254 typedef struct DEVICE_EXTENSION *PDEVICE_EXTENSION;
 255
 256 typedef NTSTATUS (*PGET_NEXT_CLUSTER)(PDEVICE_EXTENSION,ULONG,PULONG);
 257 typedef NTSTATUS (*PFIND_AND_MARK_AVAILABLE_CLUSTER)(PDEVICE_EXTENSION,PULONG);
 258 typedef NTSTATUS (*PWRITE_CLUSTER)(PDEVICE_EXTENSION,ULONG,ULONG,PULONG);
 259
 260 typedef NTSTATUS (*PGET_NEXT_DIR_ENTRY)(PVOID*,PVOID*,struct _VFATFCB*,struct _VFAT_DIRENTRY_CONTEXT*,BOOLEAN);
 261
 262 typedef struct DEVICE_EXTENSION
 263 {
 264   ERESOURCE DirResource;
 265   ERESOURCE FatResource;
 266
 267   KSPIN_LOCK FcbListLock;
 268   LIST_ENTRY FcbListHead;
 269   ULONG HashTableSize;
 270   struct _HASHENTRY** FcbHashTable;
 271
 272   PDEVICE_OBJECT StorageDevice;
 273   PFILE_OBJECT FATFileObject;
 274   FATINFO FatInfo;
 275   ULONG LastAvailableCluster;
 276   ULONG AvailableClusters;
 277   BOOLEAN AvailableClustersValid;
 278   ULONG Flags;
 279   struct _VFATFCB * VolumeFcb;
 280
 281   /* Pointers to functions for manipulating FAT. */
 282   PGET_NEXT_CLUSTER GetNextCluster;
 283   PFIND_AND_MARK_AVAILABLE_CLUSTER FindAndMarkAvailableCluster;
 284   PWRITE_CLUSTER WriteCluster;
 285   ULONG CleanShutBitMask;
 286
 287   /* Pointers to functions for manipulating directory entries. */
 288   PGET_NEXT_DIR_ENTRY GetNextDirEntry;
 289
 290   ULONG BaseDateYear;
 291
 292   LIST_ENTRY VolumeListEntry;
 293 } DEVICE_EXTENSION, VCB, *PVCB;
 294
 295 typedef struct
 296 {
 297   PDRIVER_OBJECT DriverObject;
 298   PDEVICE_OBJECT DeviceObject;
 299   ULONG Flags;
 300   ERESOURCE VolumeListLock;
 301   LIST_ENTRY VolumeListHead;
 302   NPAGED_LOOKASIDE_LIST FcbLookasideList;
 303   NPAGED_LOOKASIDE_LIST CcbLookasideList;
 304   NPAGED_LOOKASIDE_LIST IrpContextLookasideList;
 305   FAST_IO_DISPATCH FastIoDispatch;
 306   CACHE_MANAGER_CALLBACKS CacheMgrCallbacks;
 307 } VFAT_GLOBAL_DATA, *PVFAT_GLOBAL_DATA;
 308
 309 extern PVFAT_GLOBAL_DATA VfatGlobalData;
 310
 311 #define FCB_CACHE_INITIALIZED   0x0001
 312 #define FCB_DELETE_PENDING      0x0002
 313 #define FCB_IS_FAT              0x0004
 314 #define FCB_IS_PAGE_FILE        0x0008
 315 #define FCB_IS_VOLUME           0x0010
 316 #define FCB_IS_DIRTY            0x0020
 317 #define FCB_IS_FATX_ENTRY       0x0040
 318
 319 typedef struct _VFATFCB
 320 {
 321   /* FCB header required by ROS/NT */
 322   FSRTL_COMMON_FCB_HEADER RFCB;
 323   SECTION_OBJECT_POINTERS SectionObjectPointers;
 324   ERESOURCE MainResource;
 325   ERESOURCE PagingIoResource;
 326   /* end FCB header required by ROS/NT */
 327
 328   /* directory entry for this file or directory */
 329   DIR_ENTRY entry;
 330
 331   /* Pointer to attributes in entry */
 332   PUCHAR Attributes;
 333
 334   /* long file name, points into PathNameBuffer */
 335   UNICODE_STRING LongNameU;
 336
 337   /* short file name */
 338   UNICODE_STRING ShortNameU;
 339
 340   /* directory name, points into PathNameBuffer */
 341   UNICODE_STRING DirNameU;
 342
 343   /* path + long file name 260 max*/
 344   UNICODE_STRING PathNameU;
 345
 346   /* buffer for PathNameU */
 347   PWCHAR PathNameBuffer;
 348
 349   /* buffer for ShortNameU */
 350   WCHAR ShortNameBuffer[13];
 351
 352   /* */
 353   LONG RefCount;
 354
 355   /* List of FCB's for this volume */
 356   LIST_ENTRY FcbListEntry;
 357
 358   /* pointer to the parent fcb */
 359   struct _VFATFCB* parentFcb;
 360
 361   /* Flags for the fcb */
 362   ULONG Flags;
 363
 364   /* pointer to the file object which has initialized the fcb */
 365   PFILE_OBJECT FileObject;
 366
 367   /* Directory index for the short name entry */
 368   ULONG dirIndex;
 369
 370   /* Directory index where the long name starts */
 371   ULONG startIndex;
 372
 373   /* Share access for the file object */
 374   SHARE_ACCESS FCBShareAccess;
 375
 376   /* Incremented on IRP_MJ_CREATE, decremented on IRP_MJ_CLEANUP */
 377   ULONG OpenHandleCount;
 378
 379   /* Entry into the hash table for the path + long name */
 380   HASHENTRY Hash;
 381
 382   /* Entry into the hash table for the path + short name */
 383   HASHENTRY ShortHash;
 384
 385   /* List of byte-range locks for this file */
 386   FILE_LOCK FileLock;
 387
 388   /*
 389    * Optimalization: caching of last read/write cluster+offset pair. Can't
 390    * be in VFATCCB because it must be reset everytime the allocated clusters
 391    * change.
 392    */
 393   FAST_MUTEX LastMutex;
 394   ULONG LastCluster;
 395   ULONG LastOffset;
 396 } VFATFCB, *PVFATFCB;
 397
 398 typedef struct _VFATCCB
 399 {
 400   LARGE_INTEGER  CurrentByteOffset;
 401   /* for DirectoryControl */
 402   ULONG Entry;
 403   /* for DirectoryControl */
 404   UNICODE_STRING SearchPattern;
 405 } VFATCCB, *PVFATCCB;
 406
 407 #ifndef TAG
 408 #define TAG(A, B, C, D) (ULONG)(((A)<<0) + ((B)<<8) + ((C)<<16) + ((D)<<24))
 409 #endif
 410
 411 #define TAG_CCB TAG('V', 'C', 'C', 'B')
 412 #define TAG_FCB TAG('V', 'F', 'C', 'B')
 413 #define TAG_IRP TAG('V', 'I', 'R', 'P')
 414 #define TAG_VFAT TAG('V', 'F', 'A', 'T')
 415
 416 #define ENTRIES_PER_SECTOR (BLOCKSIZE / sizeof(FATDirEntry))
 417
 418 typedef struct __DOSTIME
 419 {
 420    USHORT Second:5;
 421    USHORT Minute:6;
 422    USHORT Hour:5;
 423 }
 424 DOSTIME, *PDOSTIME;
 425
 426 typedef struct __DOSDATE
 427 {
 428    USHORT Day:5;
 429    USHORT Month:4;
 430    USHORT Year:5;
 431 }
 432 DOSDATE, *PDOSDATE;
 433
 434 #define IRPCONTEXT_CANWAIT          0x0001
 435 #define IRPCONTEXT_PENDINGRETURNED  0x0002
 436
 437 typedef struct
 438 {
 439    PIRP Irp;
 440    PDEVICE_OBJECT DeviceObject;
 441    PDEVICE_EXTENSION DeviceExt;
 442    ULONG Flags;
 443    WORK_QUEUE_ITEM WorkQueueItem;
 444    PIO_STACK_LOCATION Stack;
 445    UCHAR MajorFunction;
 446    UCHAR MinorFunction;
 447    PFILE_OBJECT FileObject;
 448    ULONG RefCount;
 449    KEVENT Event;
 450 } VFAT_IRP_CONTEXT, *PVFAT_IRP_CONTEXT;
 451
 452 typedef struct _VFAT_DIRENTRY_CONTEXT
 453 {
 454   ULONG StartIndex;
 455   ULONG DirIndex;
 456   DIR_ENTRY DirEntry;
 457   UNICODE_STRING LongNameU;
 458   UNICODE_STRING ShortNameU;
 459 } VFAT_DIRENTRY_CONTEXT, *PVFAT_DIRENTRY_CONTEXT;
 460
 461
 462 /*  ------------------------------------------------------  shutdown.c  */
 463
 464 DRIVER_DISPATCH VfatShutdown;
 465 NTSTATUS NTAPI VfatShutdown (PDEVICE_OBJECT DeviceObject,
 466                                PIRP Irp);
 467
 468 /*  --------------------------------------------------------  volume.c  */
 469
 470 NTSTATUS VfatQueryVolumeInformation (PVFAT_IRP_CONTEXT IrpContext);
 471
 472 NTSTATUS VfatSetVolumeInformation (PVFAT_IRP_CONTEXT IrpContext);
 473
 474 /*  ------------------------------------------------------  blockdev.c  */
 475
 476 NTSTATUS VfatReadDisk(IN PDEVICE_OBJECT pDeviceObject,
 477                       IN PLARGE_INTEGER ReadOffset,
 478                       IN ULONG ReadLength,
 479                       IN PUCHAR Buffer,
 480                       IN BOOLEAN Override);
 481
 482 NTSTATUS VfatReadDiskPartial (IN PVFAT_IRP_CONTEXT IrpContext,
 483                               IN PLARGE_INTEGER ReadOffset,
 484                               IN ULONG ReadLength,
 485                               IN ULONG BufferOffset,
 486                               IN BOOLEAN Wait);
 487
 488 NTSTATUS VfatWriteDiskPartial(IN PVFAT_IRP_CONTEXT IrpContext,
 489                               IN PLARGE_INTEGER WriteOffset,
 490                               IN ULONG WriteLength,
 491                               IN ULONG BufferOffset,
 492                               IN BOOLEAN Wait);
 493
 494 NTSTATUS VfatBlockDeviceIoControl (IN PDEVICE_OBJECT DeviceObject,
 495                                    IN ULONG CtlCode,
 496                                    IN PVOID InputBuffer,
 497                                    IN ULONG InputBufferSize,
 498                                    IN OUT PVOID OutputBuffer,
 499                                    IN OUT PULONG pOutputBufferSize,
 500                                    IN BOOLEAN Override);
 501
 502 /*  -----------------------------------------------------------  dir.c  */
 503
 504 NTSTATUS VfatDirectoryControl (PVFAT_IRP_CONTEXT);
 505
 506 BOOLEAN FsdDosDateTimeToSystemTime (PDEVICE_EXTENSION DeviceExt,
 507                                     USHORT DosDate,
 508                                     USHORT DosTime,
 509                                     PLARGE_INTEGER SystemTime);
 510
 511 BOOLEAN FsdSystemTimeToDosDateTime (PDEVICE_EXTENSION DeviceExt,
 512                                     PLARGE_INTEGER SystemTime,
 513                                     USHORT *pDosDate,
 514                                     USHORT *pDosTime);
 515
 516 /*  --------------------------------------------------------  create.c  */
 517
 518 NTSTATUS VfatCreate (PVFAT_IRP_CONTEXT IrpContext);
 519
 520 NTSTATUS FindFile (PDEVICE_EXTENSION DeviceExt,
 521                    PVFATFCB Parent,
 522                    PUNICODE_STRING FileToFindU,
 523                    PVFAT_DIRENTRY_CONTEXT DirContext,
 524                    BOOLEAN First);
 525
 526 VOID vfat8Dot3ToString (PFAT_DIR_ENTRY pEntry,
 527                         PUNICODE_STRING NameU);
 528
 529 NTSTATUS ReadVolumeLabel(PDEVICE_EXTENSION DeviceExt,
 530                          PVPB Vpb);
 531
 532 /*  ---------------------------------------------------------  close.c  */
 533
 534 NTSTATUS VfatClose (PVFAT_IRP_CONTEXT IrpContext);
 535
 536 NTSTATUS VfatCloseFile(PDEVICE_EXTENSION DeviceExt,
 537                        PFILE_OBJECT FileObject);
 538
 539 /*  -------------------------------------------------------  cleanup.c  */
 540
 541 NTSTATUS VfatCleanup (PVFAT_IRP_CONTEXT IrpContext);
 542
 543 /*  ---------------------------------------------------------  fastio.c  */
 544
 545 VOID
 546 VfatInitFastIoRoutines(PFAST_IO_DISPATCH FastIoDispatch);
 547
 548 BOOLEAN NTAPI
 549 VfatAcquireForLazyWrite(IN PVOID Context,
 550                         IN BOOLEAN Wait);
 551
 552 VOID NTAPI
 553 VfatReleaseFromLazyWrite(IN PVOID Context);
 554
 555 BOOLEAN NTAPI
 556 VfatAcquireForReadAhead(IN PVOID Context,
 557                         IN BOOLEAN Wait);
 558
 559 VOID NTAPI
 560 VfatReleaseFromReadAhead(IN PVOID Context);
 561
 562 /*  ---------------------------------------------------------  fsctl.c  */
 563
 564 NTSTATUS VfatFileSystemControl (PVFAT_IRP_CONTEXT IrpContext);
 565
 566 /*  ---------------------------------------------------------  finfo.c  */
 567
 568 NTSTATUS VfatQueryInformation (PVFAT_IRP_CONTEXT IrpContext);
 569
 570 NTSTATUS VfatSetInformation (PVFAT_IRP_CONTEXT IrpContext);
 571
 572 NTSTATUS
 573 VfatSetAllocationSizeInformation(PFILE_OBJECT FileObject,
 574                                  PVFATFCB Fcb,
 575                                  PDEVICE_EXTENSION DeviceExt,
 576                                  PLARGE_INTEGER AllocationSize);
 577
 578 /*  ---------------------------------------------------------  iface.c  */
 579
 580 NTSTATUS NTAPI DriverEntry (PDRIVER_OBJECT DriverObject,
 581                               PUNICODE_STRING RegistryPath);
 582
 583 /*  ---------------------------------------------------------  dirwr.c  */
 584
 585 NTSTATUS VfatAddEntry (PDEVICE_EXTENSION DeviceExt,
 586                        PUNICODE_STRING PathNameU,
 587                        PVFATFCB* Fcb,
 588                        PVFATFCB ParentFcb,
 589                        ULONG RequestedOptions,
 590                        UCHAR ReqAttr);
 591
 592 NTSTATUS VfatUpdateEntry (PVFATFCB pFcb);
 593
 594 NTSTATUS VfatDelEntry(PDEVICE_EXTENSION, PVFATFCB);
 595
 596 BOOLEAN
 597 vfatFindDirSpace(PDEVICE_EXTENSION DeviceExt,
 598                  PVFATFCB pDirFcb,
 599                  ULONG nbSlots,
 600                  PULONG start);
 601
 602 /*  --------------------------------------------------------  string.c  */
 603
 604 VOID
 605 vfatSplitPathName(PUNICODE_STRING PathNameU,
 606                   PUNICODE_STRING DirNameU,
 607                   PUNICODE_STRING FileNameU);
 608
 609 BOOLEAN vfatIsLongIllegal(WCHAR c);
 610
 611 BOOLEAN wstrcmpjoki (PWSTR s1,
 612                      PWSTR s2);
 613
 614 /*  -----------------------------------------------------------  fat.c  */
 615
 616 NTSTATUS FAT12GetNextCluster(PDEVICE_EXTENSION DeviceExt,
 617                              ULONG CurrentCluster,
 618                              PULONG NextCluster);
 619
 620 NTSTATUS FAT12FindAndMarkAvailableCluster(PDEVICE_EXTENSION DeviceExt,
 621                                           PULONG Cluster);
 622
 623 NTSTATUS FAT12WriteCluster(PDEVICE_EXTENSION DeviceExt,
 624                            ULONG ClusterToWrite,
 625                            ULONG NewValue,
 626                            PULONG OldValue);
 627
 628 NTSTATUS FAT16GetNextCluster(PDEVICE_EXTENSION DeviceExt,
 629                              ULONG CurrentCluster,
 630                              PULONG NextCluster);
 631
 632 NTSTATUS FAT16FindAndMarkAvailableCluster(PDEVICE_EXTENSION DeviceExt,
 633                                           PULONG Cluster);
 634
 635 NTSTATUS FAT16WriteCluster(PDEVICE_EXTENSION DeviceExt,
 636                            ULONG ClusterToWrite,
 637                            ULONG NewValue,
 638                            PULONG OldValue);
 639
 640 NTSTATUS FAT32GetNextCluster(PDEVICE_EXTENSION DeviceExt,
 641                              ULONG CurrentCluster,
 642                              PULONG NextCluster);
 643
 644 NTSTATUS FAT32FindAndMarkAvailableCluster(PDEVICE_EXTENSION DeviceExt,
 645                                           PULONG Cluster);
 646
 647 NTSTATUS FAT32WriteCluster(PDEVICE_EXTENSION DeviceExt,
 648                            ULONG ClusterToWrite,
 649                            ULONG NewValue,
 650                            PULONG OldValue);
 651
 652 NTSTATUS OffsetToCluster (PDEVICE_EXTENSION DeviceExt,
 653                           ULONG FirstCluster,
 654                           ULONG FileOffset,
 655                           PULONG Cluster,
 656                           BOOLEAN Extend);
 657
 658 ULONGLONG ClusterToSector (PDEVICE_EXTENSION DeviceExt,
 659                            ULONG Cluster);
 660
 661 NTSTATUS GetNextCluster (PDEVICE_EXTENSION DeviceExt,
 662                          ULONG CurrentCluster,
 663                          PULONG NextCluster);
 664
 665 NTSTATUS GetNextClusterExtend (PDEVICE_EXTENSION DeviceExt,
 666                                ULONG CurrentCluster,
 667                                PULONG NextCluster);
 668
 669 NTSTATUS CountAvailableClusters (PDEVICE_EXTENSION DeviceExt,
 670                                  PLARGE_INTEGER Clusters);
 671
 672 NTSTATUS
 673 WriteCluster(PDEVICE_EXTENSION DeviceExt,
 674              ULONG ClusterToWrite,
 675              ULONG NewValue);
 676
 677 /*  ------------------------------------------------------  direntry.c  */
 678
 679 ULONG  vfatDirEntryGetFirstCluster (PDEVICE_EXTENSION  pDeviceExt,
 680                                     PDIR_ENTRY  pDirEntry);
 681
 682 BOOLEAN VfatIsDirectoryEmpty(PVFATFCB Fcb);
 683
 684 NTSTATUS FATGetNextDirEntry(PVOID * pContext,
 685                              PVOID * pPage,
 686                              IN PVFATFCB pDirFcb,
 687                              IN PVFAT_DIRENTRY_CONTEXT DirContext,
 688                              BOOLEAN First);
 689
 690 NTSTATUS FATXGetNextDirEntry(PVOID * pContext,
 691                              PVOID * pPage,
 692                              IN PVFATFCB pDirFcb,
 693                              IN PVFAT_DIRENTRY_CONTEXT DirContext,
 694                              BOOLEAN First);
 695
 696 /*  -----------------------------------------------------------  fcb.c  */
 697
 698 PVFATFCB vfatNewFCB (PDEVICE_EXTENSION  pVCB,
 699                         PUNICODE_STRING pFileNameU);
 700
 701 VOID vfatDestroyFCB (PVFATFCB  pFCB);
 702
 703 VOID vfatDestroyCCB(PVFATCCB pCcb);
 704
 705 VOID vfatGrabFCB (PDEVICE_EXTENSION  pVCB,
 706                   PVFATFCB  pFCB);
 707
 708 VOID vfatReleaseFCB (PDEVICE_EXTENSION  pVCB,
 709                      PVFATFCB  pFCB);
 710
 711 VOID vfatAddFCBToTable (PDEVICE_EXTENSION  pVCB,
 712                         PVFATFCB  pFCB);
 713
 714 PVFATFCB vfatGrabFCBFromTable (PDEVICE_EXTENSION  pDeviceExt,
 715                                PUNICODE_STRING  pFileNameU);
 716
 717 PVFATFCB vfatMakeRootFCB (PDEVICE_EXTENSION  pVCB);
 718
 719 PVFATFCB vfatOpenRootFCB (PDEVICE_EXTENSION  pVCB);
 720
 721 BOOLEAN vfatFCBIsDirectory (PVFATFCB FCB);
 722
 723 BOOLEAN vfatFCBIsRoot(PVFATFCB FCB);
 724
 725 NTSTATUS vfatAttachFCBToFileObject (PDEVICE_EXTENSION  vcb,
 726                                     PVFATFCB  fcb,
 727                                     PFILE_OBJECT  fileObject);
 728
 729 NTSTATUS vfatDirFindFile (PDEVICE_EXTENSION  pVCB,
 730                           PVFATFCB  parentFCB,
 731                           PUNICODE_STRING FileToFindU,
 732                           PVFATFCB * fileFCB);
 733
 734 NTSTATUS vfatGetFCBForFile (PDEVICE_EXTENSION  pVCB,
 735                             PVFATFCB  *pParentFCB,
 736                             PVFATFCB  *pFCB,
 737                             PUNICODE_STRING pFileNameU);
 738
 739 NTSTATUS vfatMakeFCBFromDirEntry (PVCB  vcb,
 740                                   PVFATFCB  directoryFCB,
 741                                   PVFAT_DIRENTRY_CONTEXT DirContext,
 742                                   PVFATFCB * fileFCB);
 743
 744 /*  ------------------------------------------------------------  rw.c  */
 745
 746 NTSTATUS VfatRead (PVFAT_IRP_CONTEXT IrpContext);
 747
 748 NTSTATUS VfatWrite (PVFAT_IRP_CONTEXT IrpContext);
 749
 750 NTSTATUS NextCluster(PDEVICE_EXTENSION DeviceExt,
 751                      ULONG FirstCluster,
 752                      PULONG CurrentCluster,
 753                      BOOLEAN Extend);
 754
 755 /*  -----------------------------------------------------------  misc.c  */
 756
 757 NTSTATUS VfatQueueRequest(PVFAT_IRP_CONTEXT IrpContext);
 758
 759 PVFAT_IRP_CONTEXT VfatAllocateIrpContext(PDEVICE_OBJECT DeviceObject,
 760                                          PIRP Irp);
 761
 762 VOID VfatFreeIrpContext(PVFAT_IRP_CONTEXT IrpContext);
 763
 764 DRIVER_DISPATCH VfatBuildRequest;
 765 NTSTATUS NTAPI VfatBuildRequest (PDEVICE_OBJECT DeviceObject,
 766                                    PIRP Irp);
 767
 768 PVOID VfatGetUserBuffer(IN PIRP);
 769
 770 NTSTATUS VfatLockUserBuffer(IN PIRP, IN ULONG,
 771                             IN LOCK_OPERATION);
 772
 773 NTSTATUS
 774 VfatSetExtendedAttributes(PFILE_OBJECT FileObject,
 775                           PVOID Ea,
 776                           ULONG EaLength);
 777 /*  ------------------------------------------------------------- flush.c  */
 778
 779 NTSTATUS VfatFlush(PVFAT_IRP_CONTEXT IrpContext);
 780
 781 NTSTATUS VfatFlushVolume(PDEVICE_EXTENSION DeviceExt, PVFATFCB VolumeFcb);
 782
 783
 784 /* EOF */