drivers/filesystems/fastfat/vfat.h

   1 #ifndef _FASTFAT_PCH_
   2 #define _FASTFAT_PCH_
   3
   4 #include <ntifs.h>
   5 #include <ntdddisk.h>
   6 #include <dos.h>
   7 #include <pseh/pseh2.h>
   8
   9 #define USE_ROS_CC_AND_FS
  10
  11 #define ROUND_DOWN(n, align) \
  12     (((ULONG)n) & ~((align) - 1l))
  13
  14 #define ROUND_UP(n, align) \
  15     ROUND_DOWN(((ULONG)n) + (align) - 1, (align))
  16
  17 #include <pshpack1.h>
  18 struct _BootSector
  19 {
  20     unsigned char  magic0, res0, magic1;
  21     unsigned char  OEMName[8];
  22     unsigned short BytesPerSector;
  23     unsigned char  SectorsPerCluster;
  24     unsigned short ReservedSectors;
  25     unsigned char  FATCount;
  26     unsigned short RootEntries, Sectors;
  27     unsigned char  Media;
  28     unsigned short FATSectors, SectorsPerTrack, Heads;
  29     unsigned long  HiddenSectors, SectorsHuge;
  30     unsigned char  Drive, Res1, Sig;
  31     unsigned long  VolumeID;
  32     unsigned char  VolumeLabel[11], SysType[8];
  33     unsigned char  Res2[448];
  34     unsigned short Signatur1;
  35 };
  36
  37 struct _BootSector32
  38 {
  39     unsigned char  magic0, res0, magic1;                        // 0
  40     unsigned char  OEMName[8];                          // 3
  41     unsigned short BytesPerSector;                      // 11
  42     unsigned char  SectorsPerCluster;                   // 13
  43     unsigned short ReservedSectors;                     // 14
  44     unsigned char  FATCount;                            // 16
  45     unsigned short RootEntries, Sectors;                        // 17
  46     unsigned char  Media;                                       // 21
  47     unsigned short FATSectors, SectorsPerTrack, Heads;  // 22
  48     unsigned long  HiddenSectors, SectorsHuge;          // 28
  49     unsigned long  FATSectors32;                                // 36
  50     unsigned short ExtFlag;                             // 40
  51     unsigned short FSVersion;                           // 42
  52     unsigned long  RootCluster;                         // 44
  53     unsigned short FSInfoSector;                                // 48
  54     unsigned short BootBackup;                          // 50
  55     unsigned char  Res3[12];                            // 52
  56     unsigned char  Drive;                                       // 64
  57     unsigned char  Res4;                                        // 65
  58     unsigned char  ExtBootSignature;                    // 66
  59     unsigned long  VolumeID;                            // 67
  60     unsigned char  VolumeLabel[11], SysType[8];         // 71
  61     unsigned char  Res2[420];                           // 90
  62     unsigned short Signature1;                          // 510
  63 };
  64
  65 struct _BootSectorFatX
  66 {
  67     unsigned char SysType[4];        // 0
  68     unsigned long VolumeID;          // 4
  69     unsigned long SectorsPerCluster; // 8
  70     unsigned short FATCount;         // 12
  71     unsigned long Unknown;           // 14
  72     unsigned char Unused[4078];      // 18
  73 };
  74
  75 struct _FsInfoSector
  76 {
  77     unsigned long  ExtBootSignature2;                   // 0
  78     unsigned char  Res6[480];                           // 4
  79     unsigned long  FSINFOSignature;                     // 484
  80     unsigned long  FreeCluster;                         // 488
  81     unsigned long  NextCluster;                         // 492
  82     unsigned char  Res7[12];                            // 496
  83     unsigned long  Signatur2;                           // 508
  84 };
  85
  86 typedef struct _BootSector BootSector;
  87
  88 struct _FATDirEntry
  89 {
  90     union
  91     {
  92         struct { unsigned char Filename[8], Ext[3]; };
  93         unsigned char ShortName[11];
  94     };
  95     unsigned char  Attrib;
  96     unsigned char  lCase;
  97     unsigned char  CreationTimeMs;
  98     unsigned short CreationTime,CreationDate,AccessDate;
  99     union
 100     {
 101         unsigned short FirstClusterHigh; // FAT32
 102         unsigned short ExtendedAttributes; // FAT12/FAT16
 103     };
 104     unsigned short UpdateTime;                            //time create/update
 105     unsigned short UpdateDate;                            //date create/update
 106     unsigned short FirstCluster;
 107     unsigned long  FileSize;
 108 };
 109
 110 #define FAT_EAFILE  "EA DATA. SF"
 111
 112 typedef struct _EAFileHeader FAT_EA_FILE_HEADER, *PFAT_EA_FILE_HEADER;
 113
 114 struct _EAFileHeader
 115 {
 116     unsigned short Signature; // ED
 117     unsigned short Unknown[15];
 118     unsigned short EASetTable[240];
 119 };
 120
 121 typedef struct _EASetHeader FAT_EA_SET_HEADER, *PFAT_EA_SET_HEADER;
 122
 123 struct _EASetHeader
 124 {
 125     unsigned short Signature; // EA
 126     unsigned short Offset; // relative offset, same value as in the EASetTable
 127     unsigned short Unknown1[2];
 128     char TargetFileName[12];
 129     unsigned short Unknown2[3];
 130     unsigned int EALength;
 131     // EA Header
 132 };
 133
 134 typedef struct _EAHeader FAT_EA_HEADER, *PFAT_EA_HEADER;
 135
 136 struct _EAHeader
 137 {
 138     unsigned char Unknown;
 139     unsigned char EANameLength;
 140     unsigned short EAValueLength;
 141     // Name Data
 142     // Value Data
 143 };
 144
 145 typedef struct _FATDirEntry FAT_DIR_ENTRY, *PFAT_DIR_ENTRY;
 146
 147 struct _FATXDirEntry
 148 {
 149     unsigned char FilenameLength; // 0
 150     unsigned char Attrib;         // 1
 151     unsigned char Filename[42];   // 2
 152     unsigned long FirstCluster;   // 44
 153     unsigned long FileSize;       // 48
 154     unsigned short UpdateTime;    // 52
 155     unsigned short UpdateDate;    // 54
 156     unsigned short CreationTime;  // 56
 157     unsigned short CreationDate;  // 58
 158     unsigned short AccessTime;    // 60
 159     unsigned short AccessDate;    // 62
 160 };
 161
 162 struct _slot
 163 {
 164     unsigned char id;               // sequence number for slot
 165     WCHAR  name0_4[5];              // first 5 characters in name
 166     unsigned char attr;             // attribute byte
 167     unsigned char reserved;         // always 0
 168     unsigned char alias_checksum;   // checksum for 8.3 alias
 169     WCHAR  name5_10[6];             // 6 more characters in name
 170     unsigned char start[2];         // starting cluster number
 171     WCHAR  name11_12[2];            // last 2 characters in name
 172 };
 173
 174 typedef struct _slot slot;
 175
 176 #include <poppack.h>
 177
 178 #define VFAT_CASE_LOWER_BASE    8               // base is lower case
 179 #define VFAT_CASE_LOWER_EXT     16              // extension is lower case
 180
 181 #define LONGNAME_MAX_LENGTH     256             // max length for a long filename
 182
 183 #define ENTRY_DELETED(DeviceExt, DirEntry) ((DeviceExt)->Flags & VCB_IS_FATX ? FATX_ENTRY_DELETED(&((DirEntry)->FatX)) : FAT_ENTRY_DELETED(&((DirEntry)->Fat)))
 184 #define ENTRY_VOLUME(DeviceExt, DirEntry)  ((DeviceExt)->Flags & VCB_IS_FATX ? FATX_ENTRY_VOLUME(&((DirEntry)->FatX)) : FAT_ENTRY_VOLUME(&((DirEntry)->Fat)))
 185 #define ENTRY_END(DeviceExt, DirEntry)     ((DeviceExt)->Flags & VCB_IS_FATX ? FATX_ENTRY_END(&((DirEntry)->FatX)) : FAT_ENTRY_END(&((DirEntry)->Fat)))
 186
 187 #define FAT_ENTRY_DELETED(DirEntry)  ((DirEntry)->Filename[0] == 0xe5)
 188 #define FAT_ENTRY_END(DirEntry)      ((DirEntry)->Filename[0] == 0)
 189 #define FAT_ENTRY_LONG(DirEntry)     (((DirEntry)->Attrib & 0x3f) == 0x0f)
 190 #define FAT_ENTRY_VOLUME(DirEntry)   (((DirEntry)->Attrib & 0x1f) == 0x08)
 191
 192 #define FATX_ENTRY_DELETED(DirEntry) ((DirEntry)->FilenameLength == 0xe5)
 193 #define FATX_ENTRY_END(DirEntry)     ((DirEntry)->FilenameLength == 0xff)
 194 #define FATX_ENTRY_LONG(DirEntry)    (FALSE)
 195 #define FATX_ENTRY_VOLUME(DirEntry)  (((DirEntry)->Attrib & 0x1f) == 0x08)
 196
 197 #define FAT_ENTRIES_PER_PAGE   (PAGE_SIZE / sizeof (FAT_DIR_ENTRY))
 198 #define FATX_ENTRIES_PER_PAGE  (PAGE_SIZE / sizeof (FATX_DIR_ENTRY))
 199
 200 typedef struct _FATXDirEntry FATX_DIR_ENTRY, *PFATX_DIR_ENTRY;
 201
 202 union _DIR_ENTRY
 203 {
 204     FAT_DIR_ENTRY Fat;
 205     FATX_DIR_ENTRY FatX;
 206 };
 207
 208 typedef union _DIR_ENTRY DIR_ENTRY, *PDIR_ENTRY;
 209
 210 #define BLOCKSIZE 512
 211
 212 #define FAT16  (1)
 213 #define FAT12  (2)
 214 #define FAT32  (3)
 215 #define FATX16 (4)
 216 #define FATX32 (5)
 217
 218 #define VCB_VOLUME_LOCKED       0x0001
 219 #define VCB_DISMOUNT_PENDING    0x0002
 220 #define VCB_IS_FATX             0x0004
 221 #define VCB_IS_DIRTY            0x4000 /* Volume is dirty */
 222 #define VCB_CLEAR_DIRTY         0x8000 /* Clean dirty flag at shutdown */
 223
 224 typedef struct
 225 {
 226     ULONG VolumeID;
 227     ULONG FATStart;
 228     ULONG FATCount;
 229     ULONG FATSectors;
 230     ULONG rootDirectorySectors;
 231     ULONG rootStart;
 232     ULONG dataStart;
 233     ULONG RootCluster;
 234     ULONG SectorsPerCluster;
 235     ULONG BytesPerSector;
 236     ULONG BytesPerCluster;
 237     ULONG NumberOfClusters;
 238     ULONG FatType;
 239     ULONG Sectors;
 240     BOOLEAN FixedMedia;
 241 } FATINFO, *PFATINFO;
 242
 243 struct _VFATFCB;
 244 struct _VFAT_DIRENTRY_CONTEXT;
 245
 246 typedef struct _HASHENTRY
 247 {
 248     ULONG Hash;
 249     struct _VFATFCB* self;
 250     struct _HASHENTRY* next;
 251 }
 252 HASHENTRY;
 253
 254 #define FCB_HASH_TABLE_SIZE 65536
 255
 256 typedef struct DEVICE_EXTENSION *PDEVICE_EXTENSION;
 257
 258 typedef NTSTATUS (*PGET_NEXT_CLUSTER)(PDEVICE_EXTENSION,ULONG,PULONG);
 259 typedef NTSTATUS (*PFIND_AND_MARK_AVAILABLE_CLUSTER)(PDEVICE_EXTENSION,PULONG);
 260 typedef NTSTATUS (*PWRITE_CLUSTER)(PDEVICE_EXTENSION,ULONG,ULONG,PULONG);
 261
 262 typedef NTSTATUS (*PGET_NEXT_DIR_ENTRY)(PVOID*,PVOID*,struct _VFATFCB*,struct _VFAT_DIRENTRY_CONTEXT*,BOOLEAN);
 263
 264 typedef struct DEVICE_EXTENSION
 265 {
 266     ERESOURCE DirResource;
 267     ERESOURCE FatResource;
 268
 269     KSPIN_LOCK FcbListLock;
 270     LIST_ENTRY FcbListHead;
 271     ULONG HashTableSize;
 272     struct _HASHENTRY **FcbHashTable;
 273
 274     PDEVICE_OBJECT StorageDevice;
 275     PFILE_OBJECT FATFileObject;
 276     FATINFO FatInfo;
 277     ULONG LastAvailableCluster;
 278     ULONG AvailableClusters;
 279     BOOLEAN AvailableClustersValid;
 280     ULONG Flags;
 281     struct _VFATFCB *VolumeFcb;
 282
 283     /* Pointers to functions for manipulating FAT. */
 284     PGET_NEXT_CLUSTER GetNextCluster;
 285     PFIND_AND_MARK_AVAILABLE_CLUSTER FindAndMarkAvailableCluster;
 286     PWRITE_CLUSTER WriteCluster;
 287     ULONG CleanShutBitMask;
 288
 289     /* Pointers to functions for manipulating directory entries. */
 290     PGET_NEXT_DIR_ENTRY GetNextDirEntry;
 291
 292     ULONG BaseDateYear;
 293
 294     LIST_ENTRY VolumeListEntry;
 295
 296     /* Notifications */
 297     LIST_ENTRY NotifyList;
 298     PNOTIFY_SYNC NotifySync;
 299 } DEVICE_EXTENSION, VCB, *PVCB;
 300
 301 typedef struct
 302 {
 303     PDRIVER_OBJECT DriverObject;
 304     PDEVICE_OBJECT DeviceObject;
 305     ULONG Flags;
 306     ERESOURCE VolumeListLock;
 307     LIST_ENTRY VolumeListHead;
 308     NPAGED_LOOKASIDE_LIST FcbLookasideList;
 309     NPAGED_LOOKASIDE_LIST CcbLookasideList;
 310     NPAGED_LOOKASIDE_LIST IrpContextLookasideList;
 311     FAST_IO_DISPATCH FastIoDispatch;
 312     CACHE_MANAGER_CALLBACKS CacheMgrCallbacks;
 313 } VFAT_GLOBAL_DATA, *PVFAT_GLOBAL_DATA;
 314
 315 extern PVFAT_GLOBAL_DATA VfatGlobalData;
 316
 317 #define FCB_CACHE_INITIALIZED   0x0001
 318 #define FCB_DELETE_PENDING      0x0002
 319 #define FCB_IS_FAT              0x0004
 320 #define FCB_IS_PAGE_FILE        0x0008
 321 #define FCB_IS_VOLUME           0x0010
 322 #define FCB_IS_DIRTY            0x0020
 323 #define FCB_IS_FATX_ENTRY       0x0040
 324
 325 typedef struct _VFATFCB
 326 {
 327     /* FCB header required by ROS/NT */
 328     FSRTL_COMMON_FCB_HEADER RFCB;
 329     SECTION_OBJECT_POINTERS SectionObjectPointers;
 330     ERESOURCE MainResource;
 331     ERESOURCE PagingIoResource;
 332     /* end FCB header required by ROS/NT */
 333
 334     /* directory entry for this file or directory */
 335     DIR_ENTRY entry;
 336
 337     /* Pointer to attributes in entry */
 338     PUCHAR Attributes;
 339
 340     /* long file name, points into PathNameBuffer */
 341     UNICODE_STRING LongNameU;
 342
 343     /* short file name */
 344     UNICODE_STRING ShortNameU;
 345
 346     /* directory name, points into PathNameBuffer */
 347     UNICODE_STRING DirNameU;
 348
 349     /* path + long file name 260 max*/
 350     UNICODE_STRING PathNameU;
 351
 352     /* buffer for PathNameU */
 353     PWCHAR PathNameBuffer;
 354
 355     /* buffer for ShortNameU */
 356     WCHAR ShortNameBuffer[13];
 357
 358     /* */
 359     LONG RefCount;
 360
 361     /* List of FCB's for this volume */
 362     LIST_ENTRY FcbListEntry;
 363
 364     /* pointer to the parent fcb */
 365     struct _VFATFCB *parentFcb;
 366
 367     /* Flags for the fcb */
 368     ULONG Flags;
 369
 370     /* pointer to the file object which has initialized the fcb */
 371     PFILE_OBJECT FileObject;
 372
 373     /* Directory index for the short name entry */
 374     ULONG dirIndex;
 375
 376     /* Directory index where the long name starts */
 377     ULONG startIndex;
 378
 379     /* Share access for the file object */
 380     SHARE_ACCESS FCBShareAccess;
 381
 382     /* Incremented on IRP_MJ_CREATE, decremented on IRP_MJ_CLEANUP */
 383     ULONG OpenHandleCount;
 384
 385     /* Entry into the hash table for the path + long name */
 386     HASHENTRY Hash;
 387
 388     /* Entry into the hash table for the path + short name */
 389     HASHENTRY ShortHash;
 390
 391     /* List of byte-range locks for this file */
 392     FILE_LOCK FileLock;
 393
 394     /*
 395      * Optimalization: caching of last read/write cluster+offset pair. Can't
 396      * be in VFATCCB because it must be reset everytime the allocated clusters
 397      * change.
 398      */
 399     FAST_MUTEX LastMutex;
 400     ULONG LastCluster;
 401     ULONG LastOffset;
 402 } VFATFCB, *PVFATFCB;
 403
 404 typedef struct _VFATCCB
 405 {
 406     LARGE_INTEGER  CurrentByteOffset;
 407     /* for DirectoryControl */
 408     ULONG Entry;
 409     /* for DirectoryControl */
 410     UNICODE_STRING SearchPattern;
 411 } VFATCCB, *PVFATCCB;
 412
 413 #define TAG_CCB  'BCCV'
 414 #define TAG_FCB  'BCFV'
 415 #define TAG_IRP  'PRIV'
 416 #define TAG_VFAT 'TAFV'
 417
 418 #define ENTRIES_PER_SECTOR (BLOCKSIZE / sizeof(FATDirEntry))
 419
 420 typedef struct __DOSTIME
 421 {
 422     USHORT Second:5;
 423     USHORT Minute:6;
 424     USHORT Hour:5;
 425 }
 426 DOSTIME, *PDOSTIME;
 427
 428 typedef struct __DOSDATE
 429 {
 430     USHORT Day:5;
 431     USHORT Month:4;
 432     USHORT Year:7;
 433 }
 434 DOSDATE, *PDOSDATE;
 435
 436 #define IRPCONTEXT_CANWAIT          0x0001
 437 #define IRPCONTEXT_PENDINGRETURNED  0x0002
 438
 439 typedef struct
 440 {
 441     PIRP Irp;
 442     PDEVICE_OBJECT DeviceObject;
 443     PDEVICE_EXTENSION DeviceExt;
 444     ULONG Flags;
 445     WORK_QUEUE_ITEM WorkQueueItem;
 446     PIO_STACK_LOCATION Stack;
 447     UCHAR MajorFunction;
 448     UCHAR MinorFunction;
 449     PFILE_OBJECT FileObject;
 450     ULONG RefCount;
 451     KEVENT Event;
 452 } VFAT_IRP_CONTEXT, *PVFAT_IRP_CONTEXT;
 453
 454 typedef struct _VFAT_DIRENTRY_CONTEXT
 455 {
 456     ULONG StartIndex;
 457     ULONG DirIndex;
 458     DIR_ENTRY DirEntry;
 459     UNICODE_STRING LongNameU;
 460     UNICODE_STRING ShortNameU;
 461 } VFAT_DIRENTRY_CONTEXT, *PVFAT_DIRENTRY_CONTEXT;
 462
 463 typedef struct _VFAT_MOVE_CONTEXT
 464 {
 465     ULONG FirstCluster;
 466     ULONG FileSize;
 467     USHORT CreationDate;
 468     USHORT CreationTime;
 469 } VFAT_MOVE_CONTEXT, *PVFAT_MOVE_CONTEXT;
 470
 471 /* blockdev.c */
 472
 473 NTSTATUS
 474 VfatReadDisk(
 475     IN PDEVICE_OBJECT pDeviceObject,
 476     IN PLARGE_INTEGER ReadOffset,
 477     IN ULONG ReadLength,
 478     IN PUCHAR Buffer,
 479     IN BOOLEAN Override);
 480
 481 NTSTATUS
 482 VfatReadDiskPartial(
 483     IN PVFAT_IRP_CONTEXT IrpContext,
 484     IN PLARGE_INTEGER ReadOffset,
 485     IN ULONG ReadLength,
 486     IN ULONG BufferOffset,
 487     IN BOOLEAN Wait);
 488
 489 NTSTATUS
 490 VfatWriteDiskPartial(
 491     IN PVFAT_IRP_CONTEXT IrpContext,
 492     IN PLARGE_INTEGER WriteOffset,
 493     IN ULONG WriteLength,
 494     IN ULONG BufferOffset,
 495     IN BOOLEAN Wait);
 496
 497 NTSTATUS
 498 VfatBlockDeviceIoControl(
 499     IN PDEVICE_OBJECT DeviceObject,
 500     IN ULONG CtlCode,
 501     IN PVOID InputBuffer,
 502     IN ULONG InputBufferSize,
 503     IN OUT PVOID OutputBuffer,
 504     IN OUT PULONG pOutputBufferSize,
 505     IN BOOLEAN Override);
 506
 507 /* cleanup.c */
 508
 509 NTSTATUS
 510 VfatCleanup(
 511     PVFAT_IRP_CONTEXT IrpContext);
 512
 513 /* close.c */
 514
 515 NTSTATUS
 516 VfatClose(
 517     PVFAT_IRP_CONTEXT IrpContext);
 518
 519 NTSTATUS
 520 VfatCloseFile(
 521     PDEVICE_EXTENSION DeviceExt,
 522     PFILE_OBJECT FileObject);
 523
 524 /* create.c */
 525
 526 NTSTATUS
 527 VfatCreate(
 528     PVFAT_IRP_CONTEXT IrpContext);
 529
 530 NTSTATUS
 531 FindFile(
 532     PDEVICE_EXTENSION DeviceExt,
 533     PVFATFCB Parent,
 534     PUNICODE_STRING FileToFindU,
 535     PVFAT_DIRENTRY_CONTEXT DirContext,
 536     BOOLEAN First);
 537
 538 VOID
 539 vfat8Dot3ToString(
 540     PFAT_DIR_ENTRY pEntry,
 541     PUNICODE_STRING NameU);
 542
 543 NTSTATUS
 544 ReadVolumeLabel(
 545     PDEVICE_EXTENSION DeviceExt,
 546     PVPB Vpb);
 547
 548 /* dir.c */
 549
 550 NTSTATUS
 551 VfatDirectoryControl(
 552     PVFAT_IRP_CONTEXT IrpContext);
 553
 554 BOOLEAN
 555 FsdDosDateTimeToSystemTime(
 556     PDEVICE_EXTENSION DeviceExt,
 557     USHORT DosDate,
 558     USHORT DosTime,
 559     PLARGE_INTEGER SystemTime);
 560
 561 BOOLEAN
 562 FsdSystemTimeToDosDateTime(
 563     PDEVICE_EXTENSION DeviceExt,
 564     PLARGE_INTEGER SystemTime,
 565     USHORT *pDosDate,
 566     USHORT *pDosTime);
 567
 568 /* direntry.c */
 569
 570 ULONG
 571 vfatDirEntryGetFirstCluster(
 572     PDEVICE_EXTENSION pDeviceExt,
 573     PDIR_ENTRY pDirEntry);
 574
 575 BOOLEAN
 576 VfatIsDirectoryEmpty(
 577     PVFATFCB Fcb);
 578
 579 NTSTATUS
 580 FATGetNextDirEntry(
 581     PVOID *pContext,
 582     PVOID *pPage,
 583     IN PVFATFCB pDirFcb,
 584     IN PVFAT_DIRENTRY_CONTEXT DirContext,
 585     BOOLEAN First);
 586
 587 NTSTATUS
 588 FATXGetNextDirEntry(
 589     PVOID *pContext,
 590     PVOID *pPage,
 591     IN PVFATFCB pDirFcb,
 592     IN PVFAT_DIRENTRY_CONTEXT DirContext,
 593     BOOLEAN First);
 594
 595 /* dirwr.c */
 596
 597 NTSTATUS
 598 VfatAddEntry(
 599     PDEVICE_EXTENSION DeviceExt,
 600     PUNICODE_STRING PathNameU,
 601     PVFATFCB* Fcb,
 602     PVFATFCB ParentFcb,
 603     ULONG RequestedOptions,
 604     UCHAR ReqAttr,
 605     PVFAT_MOVE_CONTEXT MoveContext);
 606
 607 NTSTATUS
 608 VfatUpdateEntry(
 609     PVFATFCB pFcb);
 610
 611 NTSTATUS
 612 VfatDelEntry(
 613     PDEVICE_EXTENSION,
 614     PVFATFCB,
 615     PVFAT_MOVE_CONTEXT);
 616
 617 BOOLEAN
 618 vfatFindDirSpace(
 619     PDEVICE_EXTENSION DeviceExt,
 620     PVFATFCB pDirFcb,
 621     ULONG nbSlots,
 622     PULONG start);
 623
 624 NTSTATUS
 625 vfatRenameEntry(
 626     IN PDEVICE_EXTENSION DeviceExt,
 627     IN PVFATFCB pFcb,
 628     IN PUNICODE_STRING FileName,
 629     IN BOOLEAN CaseChangeOnly);
 630
 631 NTSTATUS
 632 VfatMoveEntry(
 633     IN PDEVICE_EXTENSION DeviceExt,
 634     IN PVFATFCB pFcb,
 635     IN PUNICODE_STRING FileName,
 636     IN PVFATFCB ParentFcb);
 637
 638 /* ea.h */
 639
 640 NTSTATUS
 641 VfatSetExtendedAttributes(
 642     PFILE_OBJECT FileObject,
 643     PVOID Ea,
 644     ULONG EaLength);
 645
 646 /* fastio.c */
 647
 648 VOID
 649 VfatInitFastIoRoutines(
 650     PFAST_IO_DISPATCH FastIoDispatch);
 651
 652 BOOLEAN
 653 NTAPI
 654 VfatAcquireForLazyWrite(
 655     IN PVOID Context,
 656     IN BOOLEAN Wait);
 657
 658 VOID
 659 NTAPI
 660 VfatReleaseFromLazyWrite(
 661     IN PVOID Context);
 662
 663 BOOLEAN
 664 NTAPI
 665 VfatAcquireForReadAhead(
 666     IN PVOID Context,
 667     IN BOOLEAN Wait);
 668
 669 VOID
 670 NTAPI
 671 VfatReleaseFromReadAhead(
 672     IN PVOID Context);
 673
 674 /* fat.c */
 675
 676 NTSTATUS
 677 FAT12GetNextCluster(
 678     PDEVICE_EXTENSION DeviceExt,
 679     ULONG CurrentCluster,
 680     PULONG NextCluster);
 681
 682 NTSTATUS
 683 FAT12FindAndMarkAvailableCluster(
 684     PDEVICE_EXTENSION DeviceExt,
 685     PULONG Cluster);
 686
 687 NTSTATUS
 688 FAT12WriteCluster(
 689     PDEVICE_EXTENSION DeviceExt,
 690     ULONG ClusterToWrite,
 691     ULONG NewValue,
 692     PULONG OldValue);
 693
 694 NTSTATUS
 695 FAT16GetNextCluster(
 696     PDEVICE_EXTENSION DeviceExt,
 697     ULONG CurrentCluster,
 698     PULONG NextCluster);
 699
 700 NTSTATUS
 701 FAT16FindAndMarkAvailableCluster(
 702     PDEVICE_EXTENSION DeviceExt,
 703     PULONG Cluster);
 704
 705 NTSTATUS
 706 FAT16WriteCluster(
 707     PDEVICE_EXTENSION DeviceExt,
 708     ULONG ClusterToWrite,
 709     ULONG NewValue,
 710     PULONG OldValue);
 711
 712 NTSTATUS
 713 FAT32GetNextCluster(
 714     PDEVICE_EXTENSION DeviceExt,
 715     ULONG CurrentCluster,
 716     PULONG NextCluster);
 717
 718 NTSTATUS
 719 FAT32FindAndMarkAvailableCluster(
 720     PDEVICE_EXTENSION DeviceExt,
 721     PULONG Cluster);
 722
 723 NTSTATUS
 724 FAT32WriteCluster(
 725     PDEVICE_EXTENSION DeviceExt,
 726     ULONG ClusterToWrite,
 727     ULONG NewValue,
 728     PULONG OldValue);
 729
 730 NTSTATUS
 731 OffsetToCluster(
 732     PDEVICE_EXTENSION DeviceExt,
 733     ULONG FirstCluster,
 734     ULONG FileOffset,
 735     PULONG Cluster,
 736     BOOLEAN Extend);
 737
 738 ULONGLONG
 739 ClusterToSector(
 740     PDEVICE_EXTENSION DeviceExt,
 741     ULONG Cluster);
 742
 743 NTSTATUS
 744 GetNextCluster(
 745     PDEVICE_EXTENSION DeviceExt,
 746     ULONG CurrentCluster,
 747     PULONG NextCluster);
 748
 749 NTSTATUS
 750 GetNextClusterExtend(
 751     PDEVICE_EXTENSION DeviceExt,
 752     ULONG CurrentCluster,
 753     PULONG NextCluster);
 754
 755 NTSTATUS
 756 CountAvailableClusters(
 757     PDEVICE_EXTENSION DeviceExt,
 758     PLARGE_INTEGER Clusters);
 759
 760 NTSTATUS
 761 WriteCluster(
 762     PDEVICE_EXTENSION DeviceExt,
 763     ULONG ClusterToWrite,
 764     ULONG NewValue);
 765
 766 /* fcb.c */
 767
 768 PVFATFCB
 769 vfatNewFCB(
 770     PDEVICE_EXTENSION pVCB,
 771     PUNICODE_STRING pFileNameU);
 772
 773 NTSTATUS
 774 vfatUpdateFCB(
 775     PDEVICE_EXTENSION pVCB,
 776     PVFATFCB Fcb,
 777     PUNICODE_STRING LongName,
 778     PUNICODE_STRING ShortName,
 779     PVFATFCB ParentFcb);
 780
 781 VOID
 782 vfatDestroyFCB(
 783     PVFATFCB pFCB);
 784
 785 VOID
 786 vfatDestroyCCB(
 787     PVFATCCB pCcb);
 788
 789 VOID
 790 vfatGrabFCB(
 791     PDEVICE_EXTENSION pVCB,
 792     PVFATFCB pFCB);
 793
 794 VOID
 795 vfatReleaseFCB(
 796     PDEVICE_EXTENSION pVCB,
 797     PVFATFCB pFCB);
 798
 799 PVFATFCB
 800 vfatGrabFCBFromTable(
 801     PDEVICE_EXTENSION pDeviceExt,
 802     PUNICODE_STRING pFileNameU);
 803
 804 PVFATFCB
 805 vfatMakeRootFCB(
 806     PDEVICE_EXTENSION pVCB);
 807
 808 PVFATFCB
 809 vfatOpenRootFCB(
 810     PDEVICE_EXTENSION pVCB);
 811
 812 BOOLEAN
 813 vfatFCBIsDirectory(
 814     PVFATFCB FCB);
 815
 816 BOOLEAN
 817 vfatFCBIsRoot(
 818     PVFATFCB FCB);
 819
 820 NTSTATUS
 821 vfatAttachFCBToFileObject(
 822     PDEVICE_EXTENSION vcb,
 823     PVFATFCB fcb,
 824     PFILE_OBJECT fileObject);
 825
 826 NTSTATUS
 827 vfatDirFindFile(
 828     PDEVICE_EXTENSION pVCB,
 829     PVFATFCB parentFCB,
 830     PUNICODE_STRING FileToFindU,
 831     PVFATFCB *fileFCB);
 832
 833 NTSTATUS
 834 vfatGetFCBForFile(
 835     PDEVICE_EXTENSION pVCB,
 836     PVFATFCB *pParentFCB,
 837     PVFATFCB *pFCB,
 838     PUNICODE_STRING pFileNameU);
 839
 840 NTSTATUS
 841 vfatMakeFCBFromDirEntry(
 842     PVCB vcb,
 843     PVFATFCB directoryFCB,
 844     PVFAT_DIRENTRY_CONTEXT DirContext,
 845     PVFATFCB *fileFCB);
 846
 847 /* finfo.c */
 848
 849 NTSTATUS
 850 VfatQueryInformation(
 851     PVFAT_IRP_CONTEXT IrpContext);
 852
 853 NTSTATUS
 854 VfatSetInformation(
 855     PVFAT_IRP_CONTEXT IrpContext);
 856
 857 NTSTATUS
 858 VfatSetAllocationSizeInformation(
 859     PFILE_OBJECT FileObject,
 860     PVFATFCB Fcb,
 861     PDEVICE_EXTENSION DeviceExt,
 862     PLARGE_INTEGER AllocationSize);
 863
 864 /* flush.c */
 865
 866 NTSTATUS
 867 VfatFlush(
 868     PVFAT_IRP_CONTEXT IrpContext);
 869
 870 NTSTATUS
 871 VfatFlushVolume(
 872     PDEVICE_EXTENSION DeviceExt,
 873     PVFATFCB VolumeFcb);
 874
 875 /* fsctl.c */
 876
 877 NTSTATUS
 878 VfatFileSystemControl(
 879     PVFAT_IRP_CONTEXT IrpContext);
 880
 881 /* iface.c */
 882
 883 NTSTATUS
 884 NTAPI
 885 DriverEntry(
 886     PDRIVER_OBJECT DriverObject,
 887     PUNICODE_STRING RegistryPath);
 888
 889
 890 /* misc.c */
 891
 892 NTSTATUS
 893 VfatQueueRequest(
 894     PVFAT_IRP_CONTEXT IrpContext);
 895
 896 PVFAT_IRP_CONTEXT
 897 VfatAllocateIrpContext(
 898     PDEVICE_OBJECT DeviceObject,
 899     PIRP Irp);
 900
 901 VOID
 902 VfatFreeIrpContext(
 903     PVFAT_IRP_CONTEXT IrpContext);
 904
 905 DRIVER_DISPATCH
 906 VfatBuildRequest;
 907
 908 NTSTATUS
 909 NTAPI
 910 VfatBuildRequest(
 911     PDEVICE_OBJECT DeviceObject,
 912     PIRP Irp);
 913
 914 PVOID
 915 VfatGetUserBuffer(
 916     IN PIRP);
 917
 918 NTSTATUS
 919 VfatLockUserBuffer(
 920     IN PIRP,
 921     IN ULONG,
 922     IN LOCK_OPERATION);
 923
 924 /* pnp.c */
 925
 926 NTSTATUS
 927 VfatPnp(
 928     PVFAT_IRP_CONTEXT IrpContext);
 929
 930 /* rw.c */
 931
 932 NTSTATUS
 933 VfatRead(
 934     PVFAT_IRP_CONTEXT IrpContext);
 935
 936 NTSTATUS
 937 VfatWrite(
 938     PVFAT_IRP_CONTEXT IrpContext);
 939
 940 NTSTATUS
 941 NextCluster(
 942     PDEVICE_EXTENSION DeviceExt,
 943     ULONG FirstCluster,
 944     PULONG CurrentCluster,
 945     BOOLEAN Extend);
 946
 947 /* shutdown.c */
 948
 949 DRIVER_DISPATCH
 950 VfatShutdown;
 951
 952 NTSTATUS
 953 NTAPI
 954 VfatShutdown(
 955     PDEVICE_OBJECT DeviceObject,
 956     PIRP Irp);
 957
 958 /* string.c */
 959
 960 VOID
 961 vfatSplitPathName(
 962     PUNICODE_STRING PathNameU,
 963     PUNICODE_STRING DirNameU,
 964     PUNICODE_STRING FileNameU);
 965
 966 BOOLEAN
 967 vfatIsLongIllegal(
 968     WCHAR c);
 969
 970 BOOLEAN
 971 wstrcmpjoki(
 972     PWSTR s1,
 973     PWSTR s2);
 974
 975 /* volume.c */
 976
 977 NTSTATUS
 978 VfatQueryVolumeInformation(
 979     PVFAT_IRP_CONTEXT IrpContext);
 980
 981 NTSTATUS
 982 VfatSetVolumeInformation(
 983     PVFAT_IRP_CONTEXT IrpContext);
 984
 985 #endif /* _FASTFAT_PCH_ */