drivers/filesystems/fastfat/vfat.h

   1 #include <ntifs.h>
   2 #include <bugcodes.h>
   3 #include <ntdddisk.h>
   4 #include <debug.h>
   5 #include <dos.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 #define TAG_CCB  'BCCV'
 408 #define TAG_FCB  'BCFV'
 409 #define TAG_IRP  'PRIV'
 410 #define TAG_VFAT 'TAFV'
 411
 412 #define ENTRIES_PER_SECTOR (BLOCKSIZE / sizeof(FATDirEntry))
 413
 414 typedef struct __DOSTIME
 415 {
 416    USHORT Second:5;
 417    USHORT Minute:6;
 418    USHORT Hour:5;
 419 }
 420 DOSTIME, *PDOSTIME;
 421
 422 typedef struct __DOSDATE
 423 {
 424    USHORT Day:5;
 425    USHORT Month:4;
 426    USHORT Year:7;
 427 }
 428 DOSDATE, *PDOSDATE;
 429
 430 #define IRPCONTEXT_CANWAIT          0x0001
 431 #define IRPCONTEXT_PENDINGRETURNED  0x0002
 432
 433 typedef struct
 434 {
 435    PIRP Irp;
 436    PDEVICE_OBJECT DeviceObject;
 437    PDEVICE_EXTENSION DeviceExt;
 438    ULONG Flags;
 439    WORK_QUEUE_ITEM WorkQueueItem;
 440    PIO_STACK_LOCATION Stack;
 441    UCHAR MajorFunction;
 442    UCHAR MinorFunction;
 443    PFILE_OBJECT FileObject;
 444    ULONG RefCount;
 445    KEVENT Event;
 446 } VFAT_IRP_CONTEXT, *PVFAT_IRP_CONTEXT;
 447
 448 typedef struct _VFAT_DIRENTRY_CONTEXT
 449 {
 450   ULONG StartIndex;
 451   ULONG DirIndex;
 452   DIR_ENTRY DirEntry;
 453   UNICODE_STRING LongNameU;
 454   UNICODE_STRING ShortNameU;
 455 } VFAT_DIRENTRY_CONTEXT, *PVFAT_DIRENTRY_CONTEXT;
 456
 457
 458 /*  ------------------------------------------------------  shutdown.c  */
 459
 460 DRIVER_DISPATCH VfatShutdown;
 461 NTSTATUS NTAPI VfatShutdown (PDEVICE_OBJECT DeviceObject,
 462                                PIRP Irp);
 463
 464 /*  --------------------------------------------------------  volume.c  */
 465
 466 NTSTATUS VfatQueryVolumeInformation (PVFAT_IRP_CONTEXT IrpContext);
 467
 468 NTSTATUS VfatSetVolumeInformation (PVFAT_IRP_CONTEXT IrpContext);
 469
 470 /*  ------------------------------------------------------  blockdev.c  */
 471
 472 NTSTATUS VfatReadDisk(IN PDEVICE_OBJECT pDeviceObject,
 473                       IN PLARGE_INTEGER ReadOffset,
 474                       IN ULONG ReadLength,
 475                       IN PUCHAR Buffer,
 476                       IN BOOLEAN Override);
 477
 478 NTSTATUS VfatReadDiskPartial (IN PVFAT_IRP_CONTEXT IrpContext,
 479                               IN PLARGE_INTEGER ReadOffset,
 480                               IN ULONG ReadLength,
 481                               IN ULONG BufferOffset,
 482                               IN BOOLEAN Wait);
 483
 484 NTSTATUS VfatWriteDiskPartial(IN PVFAT_IRP_CONTEXT IrpContext,
 485                               IN PLARGE_INTEGER WriteOffset,
 486                               IN ULONG WriteLength,
 487                               IN ULONG BufferOffset,
 488                               IN BOOLEAN Wait);
 489
 490 NTSTATUS VfatBlockDeviceIoControl (IN PDEVICE_OBJECT DeviceObject,
 491                                    IN ULONG CtlCode,
 492                                    IN PVOID InputBuffer,
 493                                    IN ULONG InputBufferSize,
 494                                    IN OUT PVOID OutputBuffer,
 495                                    IN OUT PULONG pOutputBufferSize,
 496                                    IN BOOLEAN Override);
 497
 498 /*  -----------------------------------------------------------  dir.c  */
 499
 500 NTSTATUS VfatDirectoryControl (PVFAT_IRP_CONTEXT);
 501
 502 BOOLEAN FsdDosDateTimeToSystemTime (PDEVICE_EXTENSION DeviceExt,
 503                                     USHORT DosDate,
 504                                     USHORT DosTime,
 505                                     PLARGE_INTEGER SystemTime);
 506
 507 BOOLEAN FsdSystemTimeToDosDateTime (PDEVICE_EXTENSION DeviceExt,
 508                                     PLARGE_INTEGER SystemTime,
 509                                     USHORT *pDosDate,
 510                                     USHORT *pDosTime);
 511
 512 /*  --------------------------------------------------------  create.c  */
 513
 514 NTSTATUS VfatCreate (PVFAT_IRP_CONTEXT IrpContext);
 515
 516 NTSTATUS FindFile (PDEVICE_EXTENSION DeviceExt,
 517                    PVFATFCB Parent,
 518                    PUNICODE_STRING FileToFindU,
 519                    PVFAT_DIRENTRY_CONTEXT DirContext,
 520                    BOOLEAN First);
 521
 522 VOID vfat8Dot3ToString (PFAT_DIR_ENTRY pEntry,
 523                         PUNICODE_STRING NameU);
 524
 525 NTSTATUS ReadVolumeLabel(PDEVICE_EXTENSION DeviceExt,
 526                          PVPB Vpb);
 527
 528 /*  ---------------------------------------------------------  close.c  */
 529
 530 NTSTATUS VfatClose (PVFAT_IRP_CONTEXT IrpContext);
 531
 532 NTSTATUS VfatCloseFile(PDEVICE_EXTENSION DeviceExt,
 533                        PFILE_OBJECT FileObject);
 534
 535 /*  -------------------------------------------------------  cleanup.c  */
 536
 537 NTSTATUS VfatCleanup (PVFAT_IRP_CONTEXT IrpContext);
 538
 539 /*  ---------------------------------------------------------  fastio.c  */
 540
 541 VOID
 542 VfatInitFastIoRoutines(PFAST_IO_DISPATCH FastIoDispatch);
 543
 544 BOOLEAN NTAPI
 545 VfatAcquireForLazyWrite(IN PVOID Context,
 546                         IN BOOLEAN Wait);
 547
 548 VOID NTAPI
 549 VfatReleaseFromLazyWrite(IN PVOID Context);
 550
 551 BOOLEAN NTAPI
 552 VfatAcquireForReadAhead(IN PVOID Context,
 553                         IN BOOLEAN Wait);
 554
 555 VOID NTAPI
 556 VfatReleaseFromReadAhead(IN PVOID Context);
 557
 558 /*  ---------------------------------------------------------  fsctl.c  */
 559
 560 NTSTATUS VfatFileSystemControl (PVFAT_IRP_CONTEXT IrpContext);
 561
 562 /*  ---------------------------------------------------------  finfo.c  */
 563
 564 NTSTATUS VfatQueryInformation (PVFAT_IRP_CONTEXT IrpContext);
 565
 566 NTSTATUS VfatSetInformation (PVFAT_IRP_CONTEXT IrpContext);
 567
 568 NTSTATUS
 569 VfatSetAllocationSizeInformation(PFILE_OBJECT FileObject,
 570                                  PVFATFCB Fcb,
 571                                  PDEVICE_EXTENSION DeviceExt,
 572                                  PLARGE_INTEGER AllocationSize);
 573
 574 /*  ---------------------------------------------------------  iface.c  */
 575
 576 NTSTATUS NTAPI DriverEntry (PDRIVER_OBJECT DriverObject,
 577                               PUNICODE_STRING RegistryPath);
 578
 579 /*  ---------------------------------------------------------  dirwr.c  */
 580
 581 NTSTATUS VfatAddEntry (PDEVICE_EXTENSION DeviceExt,
 582                        PUNICODE_STRING PathNameU,
 583                        PVFATFCB* Fcb,
 584                        PVFATFCB ParentFcb,
 585                        ULONG RequestedOptions,
 586                        UCHAR ReqAttr);
 587
 588 NTSTATUS VfatUpdateEntry (PVFATFCB pFcb);
 589
 590 NTSTATUS VfatDelEntry(PDEVICE_EXTENSION, PVFATFCB);
 591
 592 BOOLEAN
 593 vfatFindDirSpace(PDEVICE_EXTENSION DeviceExt,
 594                  PVFATFCB pDirFcb,
 595                  ULONG nbSlots,
 596                  PULONG start);
 597
 598 /*  --------------------------------------------------------  string.c  */
 599
 600 VOID
 601 vfatSplitPathName(PUNICODE_STRING PathNameU,
 602                   PUNICODE_STRING DirNameU,
 603                   PUNICODE_STRING FileNameU);
 604
 605 BOOLEAN vfatIsLongIllegal(WCHAR c);
 606
 607 BOOLEAN wstrcmpjoki (PWSTR s1,
 608                      PWSTR s2);
 609
 610 /*  -----------------------------------------------------------  fat.c  */
 611
 612 NTSTATUS FAT12GetNextCluster(PDEVICE_EXTENSION DeviceExt,
 613                              ULONG CurrentCluster,
 614                              PULONG NextCluster);
 615
 616 NTSTATUS FAT12FindAndMarkAvailableCluster(PDEVICE_EXTENSION DeviceExt,
 617                                           PULONG Cluster);
 618
 619 NTSTATUS FAT12WriteCluster(PDEVICE_EXTENSION DeviceExt,
 620                            ULONG ClusterToWrite,
 621                            ULONG NewValue,
 622                            PULONG OldValue);
 623
 624 NTSTATUS FAT16GetNextCluster(PDEVICE_EXTENSION DeviceExt,
 625                              ULONG CurrentCluster,
 626                              PULONG NextCluster);
 627
 628 NTSTATUS FAT16FindAndMarkAvailableCluster(PDEVICE_EXTENSION DeviceExt,
 629                                           PULONG Cluster);
 630
 631 NTSTATUS FAT16WriteCluster(PDEVICE_EXTENSION DeviceExt,
 632                            ULONG ClusterToWrite,
 633                            ULONG NewValue,
 634                            PULONG OldValue);
 635
 636 NTSTATUS FAT32GetNextCluster(PDEVICE_EXTENSION DeviceExt,
 637                              ULONG CurrentCluster,
 638                              PULONG NextCluster);
 639
 640 NTSTATUS FAT32FindAndMarkAvailableCluster(PDEVICE_EXTENSION DeviceExt,
 641                                           PULONG Cluster);
 642
 643 NTSTATUS FAT32WriteCluster(PDEVICE_EXTENSION DeviceExt,
 644                            ULONG ClusterToWrite,
 645                            ULONG NewValue,
 646                            PULONG OldValue);
 647
 648 NTSTATUS OffsetToCluster (PDEVICE_EXTENSION DeviceExt,
 649                           ULONG FirstCluster,
 650                           ULONG FileOffset,
 651                           PULONG Cluster,
 652                           BOOLEAN Extend);
 653
 654 ULONGLONG ClusterToSector (PDEVICE_EXTENSION DeviceExt,
 655                            ULONG Cluster);
 656
 657 NTSTATUS GetNextCluster (PDEVICE_EXTENSION DeviceExt,
 658                          ULONG CurrentCluster,
 659                          PULONG NextCluster);
 660
 661 NTSTATUS GetNextClusterExtend (PDEVICE_EXTENSION DeviceExt,
 662                                ULONG CurrentCluster,
 663                                PULONG NextCluster);
 664
 665 NTSTATUS CountAvailableClusters (PDEVICE_EXTENSION DeviceExt,
 666                                  PLARGE_INTEGER Clusters);
 667
 668 NTSTATUS
 669 WriteCluster(PDEVICE_EXTENSION DeviceExt,
 670              ULONG ClusterToWrite,
 671              ULONG NewValue);
 672
 673 /*  ------------------------------------------------------  direntry.c  */
 674
 675 ULONG  vfatDirEntryGetFirstCluster (PDEVICE_EXTENSION  pDeviceExt,
 676                                     PDIR_ENTRY  pDirEntry);
 677
 678 BOOLEAN VfatIsDirectoryEmpty(PVFATFCB Fcb);
 679
 680 NTSTATUS FATGetNextDirEntry(PVOID * pContext,
 681                              PVOID * pPage,
 682                              IN PVFATFCB pDirFcb,
 683                              IN PVFAT_DIRENTRY_CONTEXT DirContext,
 684                              BOOLEAN First);
 685
 686 NTSTATUS FATXGetNextDirEntry(PVOID * pContext,
 687                              PVOID * pPage,
 688                              IN PVFATFCB pDirFcb,
 689                              IN PVFAT_DIRENTRY_CONTEXT DirContext,
 690                              BOOLEAN First);
 691
 692 /*  -----------------------------------------------------------  fcb.c  */
 693
 694 PVFATFCB vfatNewFCB (PDEVICE_EXTENSION  pVCB,
 695                         PUNICODE_STRING pFileNameU);
 696
 697 VOID vfatDestroyFCB (PVFATFCB  pFCB);
 698
 699 VOID vfatDestroyCCB(PVFATCCB pCcb);
 700
 701 VOID vfatGrabFCB (PDEVICE_EXTENSION  pVCB,
 702                   PVFATFCB  pFCB);
 703
 704 VOID vfatReleaseFCB (PDEVICE_EXTENSION  pVCB,
 705                      PVFATFCB  pFCB);
 706
 707 VOID vfatAddFCBToTable (PDEVICE_EXTENSION  pVCB,
 708                         PVFATFCB  pFCB);
 709
 710 PVFATFCB vfatGrabFCBFromTable (PDEVICE_EXTENSION  pDeviceExt,
 711                                PUNICODE_STRING  pFileNameU);
 712
 713 PVFATFCB vfatMakeRootFCB (PDEVICE_EXTENSION  pVCB);
 714
 715 PVFATFCB vfatOpenRootFCB (PDEVICE_EXTENSION  pVCB);
 716
 717 BOOLEAN vfatFCBIsDirectory (PVFATFCB FCB);
 718
 719 BOOLEAN vfatFCBIsRoot(PVFATFCB FCB);
 720
 721 NTSTATUS vfatAttachFCBToFileObject (PDEVICE_EXTENSION  vcb,
 722                                     PVFATFCB  fcb,
 723                                     PFILE_OBJECT  fileObject);
 724
 725 NTSTATUS vfatDirFindFile (PDEVICE_EXTENSION  pVCB,
 726                           PVFATFCB  parentFCB,
 727                           PUNICODE_STRING FileToFindU,
 728                           PVFATFCB * fileFCB);
 729
 730 NTSTATUS vfatGetFCBForFile (PDEVICE_EXTENSION  pVCB,
 731                             PVFATFCB  *pParentFCB,
 732                             PVFATFCB  *pFCB,
 733                             PUNICODE_STRING pFileNameU);
 734
 735 NTSTATUS vfatMakeFCBFromDirEntry (PVCB  vcb,
 736                                   PVFATFCB  directoryFCB,
 737                                   PVFAT_DIRENTRY_CONTEXT DirContext,
 738                                   PVFATFCB * fileFCB);
 739
 740 /*  ------------------------------------------------------------  rw.c  */
 741
 742 NTSTATUS VfatRead (PVFAT_IRP_CONTEXT IrpContext);
 743
 744 NTSTATUS VfatWrite (PVFAT_IRP_CONTEXT IrpContext);
 745
 746 NTSTATUS NextCluster(PDEVICE_EXTENSION DeviceExt,
 747                      ULONG FirstCluster,
 748                      PULONG CurrentCluster,
 749                      BOOLEAN Extend);
 750
 751 /*  -----------------------------------------------------------  misc.c  */
 752
 753 NTSTATUS VfatQueueRequest(PVFAT_IRP_CONTEXT IrpContext);
 754
 755 PVFAT_IRP_CONTEXT VfatAllocateIrpContext(PDEVICE_OBJECT DeviceObject,
 756                                          PIRP Irp);
 757
 758 VOID VfatFreeIrpContext(PVFAT_IRP_CONTEXT IrpContext);
 759
 760 DRIVER_DISPATCH VfatBuildRequest;
 761 NTSTATUS NTAPI VfatBuildRequest (PDEVICE_OBJECT DeviceObject,
 762                                    PIRP Irp);
 763
 764 PVOID VfatGetUserBuffer(IN PIRP);
 765
 766 NTSTATUS VfatLockUserBuffer(IN PIRP, IN ULONG,
 767                             IN LOCK_OPERATION);
 768
 769 NTSTATUS
 770 VfatSetExtendedAttributes(PFILE_OBJECT FileObject,
 771                           PVOID Ea,
 772                           ULONG EaLength);
 773 /*  ------------------------------------------------------------- flush.c  */
 774
 775 NTSTATUS VfatFlush(PVFAT_IRP_CONTEXT IrpContext);
 776
 777 NTSTATUS VfatFlushVolume(PDEVICE_EXTENSION DeviceExt, PVFATFCB VolumeFcb);
 778
 779 /*  --------------------------------------------------------------- pnp.c  */
 780
 781 NTSTATUS VfatPnp(PVFAT_IRP_CONTEXT IrpContext);
 782
 783 /* EOF */