reactos/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
 300     /* Incremented on IRP_MJ_CREATE, decremented on IRP_MJ_CLEANUP */
 301     ULONG OpenHandleCount;
 302
 303     /* VPBs for dismount */
 304     PVPB IoVPB;
 305     PVPB SpareVPB;
 306 } DEVICE_EXTENSION, VCB, *PVCB;
 307
 308 typedef struct
 309 {
 310     PDRIVER_OBJECT DriverObject;
 311     PDEVICE_OBJECT DeviceObject;
 312     ULONG Flags;
 313     ERESOURCE VolumeListLock;
 314     LIST_ENTRY VolumeListHead;
 315     NPAGED_LOOKASIDE_LIST FcbLookasideList;
 316     NPAGED_LOOKASIDE_LIST CcbLookasideList;
 317     NPAGED_LOOKASIDE_LIST IrpContextLookasideList;
 318     FAST_IO_DISPATCH FastIoDispatch;
 319     CACHE_MANAGER_CALLBACKS CacheMgrCallbacks;
 320 } VFAT_GLOBAL_DATA, *PVFAT_GLOBAL_DATA;
 321
 322 extern PVFAT_GLOBAL_DATA VfatGlobalData;
 323
 324 #define FCB_CACHE_INITIALIZED   0x0001
 325 #define FCB_DELETE_PENDING      0x0002
 326 #define FCB_IS_FAT              0x0004
 327 #define FCB_IS_PAGE_FILE        0x0008
 328 #define FCB_IS_VOLUME           0x0010
 329 #define FCB_IS_DIRTY            0x0020
 330 #define FCB_IS_FATX_ENTRY       0x0040
 331
 332 typedef struct _VFATFCB
 333 {
 334     /* FCB header required by ROS/NT */
 335     FSRTL_COMMON_FCB_HEADER RFCB;
 336     SECTION_OBJECT_POINTERS SectionObjectPointers;
 337     ERESOURCE MainResource;
 338     ERESOURCE PagingIoResource;
 339     /* end FCB header required by ROS/NT */
 340
 341     /* directory entry for this file or directory */
 342     DIR_ENTRY entry;
 343
 344     /* Pointer to attributes in entry */
 345     PUCHAR Attributes;
 346
 347     /* long file name, points into PathNameBuffer */
 348     UNICODE_STRING LongNameU;
 349
 350     /* short file name */
 351     UNICODE_STRING ShortNameU;
 352
 353     /* directory name, points into PathNameBuffer */
 354     UNICODE_STRING DirNameU;
 355
 356     /* path + long file name 260 max*/
 357     UNICODE_STRING PathNameU;
 358
 359     /* buffer for PathNameU */
 360     PWCHAR PathNameBuffer;
 361
 362     /* buffer for ShortNameU */
 363     WCHAR ShortNameBuffer[13];
 364
 365     /* */
 366     LONG RefCount;
 367
 368     /* List of FCB's for this volume */
 369     LIST_ENTRY FcbListEntry;
 370
 371     /* pointer to the parent fcb */
 372     struct _VFATFCB *parentFcb;
 373
 374     /* Flags for the fcb */
 375     ULONG Flags;
 376
 377     /* pointer to the file object which has initialized the fcb */
 378     PFILE_OBJECT FileObject;
 379
 380     /* Directory index for the short name entry */
 381     ULONG dirIndex;
 382
 383     /* Directory index where the long name starts */
 384     ULONG startIndex;
 385
 386     /* Share access for the file object */
 387     SHARE_ACCESS FCBShareAccess;
 388
 389     /* Incremented on IRP_MJ_CREATE, decremented on IRP_MJ_CLEANUP */
 390     ULONG OpenHandleCount;
 391
 392     /* Entry into the hash table for the path + long name */
 393     HASHENTRY Hash;
 394
 395     /* Entry into the hash table for the path + short name */
 396     HASHENTRY ShortHash;
 397
 398     /* List of byte-range locks for this file */
 399     FILE_LOCK FileLock;
 400
 401     /*
 402      * Optimalization: caching of last read/write cluster+offset pair. Can't
 403      * be in VFATCCB because it must be reset everytime the allocated clusters
 404      * change.
 405      */
 406     FAST_MUTEX LastMutex;
 407     ULONG LastCluster;
 408     ULONG LastOffset;
 409 } VFATFCB, *PVFATFCB;
 410
 411 typedef struct _VFATCCB
 412 {
 413     LARGE_INTEGER  CurrentByteOffset;
 414     /* for DirectoryControl */
 415     ULONG Entry;
 416     /* for DirectoryControl */
 417     UNICODE_STRING SearchPattern;
 418 } VFATCCB, *PVFATCCB;
 419
 420 #define TAG_CCB  'BCCV'
 421 #define TAG_FCB  'BCFV'
 422 #define TAG_IRP  'PRIV'
 423 #define TAG_VFAT 'TAFV'
 424
 425 #define ENTRIES_PER_SECTOR (BLOCKSIZE / sizeof(FATDirEntry))
 426
 427 typedef struct __DOSTIME
 428 {
 429     USHORT Second:5;
 430     USHORT Minute:6;
 431     USHORT Hour:5;
 432 }
 433 DOSTIME, *PDOSTIME;
 434
 435 typedef struct __DOSDATE
 436 {
 437     USHORT Day:5;
 438     USHORT Month:4;
 439     USHORT Year:7;
 440 }
 441 DOSDATE, *PDOSDATE;
 442
 443 #define IRPCONTEXT_CANWAIT          0x0001
 444 #define IRPCONTEXT_PENDINGRETURNED  0x0002
 445
 446 typedef struct
 447 {
 448     PIRP Irp;
 449     PDEVICE_OBJECT DeviceObject;
 450     PDEVICE_EXTENSION DeviceExt;
 451     ULONG Flags;
 452     WORK_QUEUE_ITEM WorkQueueItem;
 453     PIO_STACK_LOCATION Stack;
 454     UCHAR MajorFunction;
 455     UCHAR MinorFunction;
 456     PFILE_OBJECT FileObject;
 457     ULONG RefCount;
 458     KEVENT Event;
 459 } VFAT_IRP_CONTEXT, *PVFAT_IRP_CONTEXT;
 460
 461 typedef struct _VFAT_DIRENTRY_CONTEXT
 462 {
 463     ULONG StartIndex;
 464     ULONG DirIndex;
 465     DIR_ENTRY DirEntry;
 466     UNICODE_STRING LongNameU;
 467     UNICODE_STRING ShortNameU;
 468 } VFAT_DIRENTRY_CONTEXT, *PVFAT_DIRENTRY_CONTEXT;
 469
 470 typedef struct _VFAT_MOVE_CONTEXT
 471 {
 472     ULONG FirstCluster;
 473     ULONG FileSize;
 474     USHORT CreationDate;
 475     USHORT CreationTime;
 476 } VFAT_MOVE_CONTEXT, *PVFAT_MOVE_CONTEXT;
 477
 478 /* blockdev.c */
 479
 480 NTSTATUS
 481 VfatReadDisk(
 482     IN PDEVICE_OBJECT pDeviceObject,
 483     IN PLARGE_INTEGER ReadOffset,
 484     IN ULONG ReadLength,
 485     IN PUCHAR Buffer,
 486     IN BOOLEAN Override);
 487
 488 NTSTATUS
 489 VfatReadDiskPartial(
 490     IN PVFAT_IRP_CONTEXT IrpContext,
 491     IN PLARGE_INTEGER ReadOffset,
 492     IN ULONG ReadLength,
 493     IN ULONG BufferOffset,
 494     IN BOOLEAN Wait);
 495
 496 NTSTATUS
 497 VfatWriteDiskPartial(
 498     IN PVFAT_IRP_CONTEXT IrpContext,
 499     IN PLARGE_INTEGER WriteOffset,
 500     IN ULONG WriteLength,
 501     IN ULONG BufferOffset,
 502     IN BOOLEAN Wait);
 503
 504 NTSTATUS
 505 VfatBlockDeviceIoControl(
 506     IN PDEVICE_OBJECT DeviceObject,
 507     IN ULONG CtlCode,
 508     IN PVOID InputBuffer,
 509     IN ULONG InputBufferSize,
 510     IN OUT PVOID OutputBuffer,
 511     IN OUT PULONG pOutputBufferSize,
 512     IN BOOLEAN Override);
 513
 514 /* cleanup.c */
 515
 516 NTSTATUS
 517 VfatCleanup(
 518     PVFAT_IRP_CONTEXT IrpContext);
 519
 520 /* close.c */
 521
 522 NTSTATUS
 523 VfatClose(
 524     PVFAT_IRP_CONTEXT IrpContext);
 525
 526 NTSTATUS
 527 VfatCloseFile(
 528     PDEVICE_EXTENSION DeviceExt,
 529     PFILE_OBJECT FileObject);
 530
 531 /* create.c */
 532
 533 NTSTATUS
 534 VfatCreate(
 535     PVFAT_IRP_CONTEXT IrpContext);
 536
 537 NTSTATUS
 538 FindFile(
 539     PDEVICE_EXTENSION DeviceExt,
 540     PVFATFCB Parent,
 541     PUNICODE_STRING FileToFindU,
 542     PVFAT_DIRENTRY_CONTEXT DirContext,
 543     BOOLEAN First);
 544
 545 VOID
 546 vfat8Dot3ToString(
 547     PFAT_DIR_ENTRY pEntry,
 548     PUNICODE_STRING NameU);
 549
 550 NTSTATUS
 551 ReadVolumeLabel(
 552     PDEVICE_EXTENSION DeviceExt,
 553     PVPB Vpb);
 554
 555 /* dir.c */
 556
 557 NTSTATUS
 558 VfatDirectoryControl(
 559     PVFAT_IRP_CONTEXT IrpContext);
 560
 561 BOOLEAN
 562 FsdDosDateTimeToSystemTime(
 563     PDEVICE_EXTENSION DeviceExt,
 564     USHORT DosDate,
 565     USHORT DosTime,
 566     PLARGE_INTEGER SystemTime);
 567
 568 BOOLEAN
 569 FsdSystemTimeToDosDateTime(
 570     PDEVICE_EXTENSION DeviceExt,
 571     PLARGE_INTEGER SystemTime,
 572     USHORT *pDosDate,
 573     USHORT *pDosTime);
 574
 575 /* direntry.c */
 576
 577 ULONG
 578 vfatDirEntryGetFirstCluster(
 579     PDEVICE_EXTENSION pDeviceExt,
 580     PDIR_ENTRY pDirEntry);
 581
 582 BOOLEAN
 583 VfatIsDirectoryEmpty(
 584     PVFATFCB Fcb);
 585
 586 NTSTATUS
 587 FATGetNextDirEntry(
 588     PVOID *pContext,
 589     PVOID *pPage,
 590     IN PVFATFCB pDirFcb,
 591     IN PVFAT_DIRENTRY_CONTEXT DirContext,
 592     BOOLEAN First);
 593
 594 NTSTATUS
 595 FATXGetNextDirEntry(
 596     PVOID *pContext,
 597     PVOID *pPage,
 598     IN PVFATFCB pDirFcb,
 599     IN PVFAT_DIRENTRY_CONTEXT DirContext,
 600     BOOLEAN First);
 601
 602 /* dirwr.c */
 603
 604 NTSTATUS
 605 VfatAddEntry(
 606     PDEVICE_EXTENSION DeviceExt,
 607     PUNICODE_STRING PathNameU,
 608     PVFATFCB* Fcb,
 609     PVFATFCB ParentFcb,
 610     ULONG RequestedOptions,
 611     UCHAR ReqAttr,
 612     PVFAT_MOVE_CONTEXT MoveContext);
 613
 614 NTSTATUS
 615 VfatUpdateEntry(
 616     PVFATFCB pFcb);
 617
 618 NTSTATUS
 619 VfatDelEntry(
 620     PDEVICE_EXTENSION,
 621     PVFATFCB,
 622     PVFAT_MOVE_CONTEXT);
 623
 624 BOOLEAN
 625 vfatFindDirSpace(
 626     PDEVICE_EXTENSION DeviceExt,
 627     PVFATFCB pDirFcb,
 628     ULONG nbSlots,
 629     PULONG start);
 630
 631 NTSTATUS
 632 vfatRenameEntry(
 633     IN PDEVICE_EXTENSION DeviceExt,
 634     IN PVFATFCB pFcb,
 635     IN PUNICODE_STRING FileName,
 636     IN BOOLEAN CaseChangeOnly);
 637
 638 NTSTATUS
 639 VfatMoveEntry(
 640     IN PDEVICE_EXTENSION DeviceExt,
 641     IN PVFATFCB pFcb,
 642     IN PUNICODE_STRING FileName,
 643     IN PVFATFCB ParentFcb);
 644
 645 /* ea.h */
 646
 647 NTSTATUS
 648 VfatSetExtendedAttributes(
 649     PFILE_OBJECT FileObject,
 650     PVOID Ea,
 651     ULONG EaLength);
 652
 653 /* fastio.c */
 654
 655 VOID
 656 VfatInitFastIoRoutines(
 657     PFAST_IO_DISPATCH FastIoDispatch);
 658
 659 BOOLEAN
 660 NTAPI
 661 VfatAcquireForLazyWrite(
 662     IN PVOID Context,
 663     IN BOOLEAN Wait);
 664
 665 VOID
 666 NTAPI
 667 VfatReleaseFromLazyWrite(
 668     IN PVOID Context);
 669
 670 BOOLEAN
 671 NTAPI
 672 VfatAcquireForReadAhead(
 673     IN PVOID Context,
 674     IN BOOLEAN Wait);
 675
 676 VOID
 677 NTAPI
 678 VfatReleaseFromReadAhead(
 679     IN PVOID Context);
 680
 681 /* fat.c */
 682
 683 NTSTATUS
 684 FAT12GetNextCluster(
 685     PDEVICE_EXTENSION DeviceExt,
 686     ULONG CurrentCluster,
 687     PULONG NextCluster);
 688
 689 NTSTATUS
 690 FAT12FindAndMarkAvailableCluster(
 691     PDEVICE_EXTENSION DeviceExt,
 692     PULONG Cluster);
 693
 694 NTSTATUS
 695 FAT12WriteCluster(
 696     PDEVICE_EXTENSION DeviceExt,
 697     ULONG ClusterToWrite,
 698     ULONG NewValue,
 699     PULONG OldValue);
 700
 701 NTSTATUS
 702 FAT16GetNextCluster(
 703     PDEVICE_EXTENSION DeviceExt,
 704     ULONG CurrentCluster,
 705     PULONG NextCluster);
 706
 707 NTSTATUS
 708 FAT16FindAndMarkAvailableCluster(
 709     PDEVICE_EXTENSION DeviceExt,
 710     PULONG Cluster);
 711
 712 NTSTATUS
 713 FAT16WriteCluster(
 714     PDEVICE_EXTENSION DeviceExt,
 715     ULONG ClusterToWrite,
 716     ULONG NewValue,
 717     PULONG OldValue);
 718
 719 NTSTATUS
 720 FAT32GetNextCluster(
 721     PDEVICE_EXTENSION DeviceExt,
 722     ULONG CurrentCluster,
 723     PULONG NextCluster);
 724
 725 NTSTATUS
 726 FAT32FindAndMarkAvailableCluster(
 727     PDEVICE_EXTENSION DeviceExt,
 728     PULONG Cluster);
 729
 730 NTSTATUS
 731 FAT32WriteCluster(
 732     PDEVICE_EXTENSION DeviceExt,
 733     ULONG ClusterToWrite,
 734     ULONG NewValue,
 735     PULONG OldValue);
 736
 737 NTSTATUS
 738 OffsetToCluster(
 739     PDEVICE_EXTENSION DeviceExt,
 740     ULONG FirstCluster,
 741     ULONG FileOffset,
 742     PULONG Cluster,
 743     BOOLEAN Extend);
 744
 745 ULONGLONG
 746 ClusterToSector(
 747     PDEVICE_EXTENSION DeviceExt,
 748     ULONG Cluster);
 749
 750 NTSTATUS
 751 GetNextCluster(
 752     PDEVICE_EXTENSION DeviceExt,
 753     ULONG CurrentCluster,
 754     PULONG NextCluster);
 755
 756 NTSTATUS
 757 GetNextClusterExtend(
 758     PDEVICE_EXTENSION DeviceExt,
 759     ULONG CurrentCluster,
 760     PULONG NextCluster);
 761
 762 NTSTATUS
 763 CountAvailableClusters(
 764     PDEVICE_EXTENSION DeviceExt,
 765     PLARGE_INTEGER Clusters);
 766
 767 NTSTATUS
 768 WriteCluster(
 769     PDEVICE_EXTENSION DeviceExt,
 770     ULONG ClusterToWrite,
 771     ULONG NewValue);
 772
 773 /* fcb.c */
 774
 775 PVFATFCB
 776 vfatNewFCB(
 777     PDEVICE_EXTENSION pVCB,
 778     PUNICODE_STRING pFileNameU);
 779
 780 NTSTATUS
 781 vfatUpdateFCB(
 782     PDEVICE_EXTENSION pVCB,
 783     PVFATFCB Fcb,
 784     PUNICODE_STRING LongName,
 785     PUNICODE_STRING ShortName,
 786     PVFATFCB ParentFcb);
 787
 788 VOID
 789 vfatDestroyFCB(
 790     PVFATFCB pFCB);
 791
 792 VOID
 793 vfatDestroyCCB(
 794     PVFATCCB pCcb);
 795
 796 VOID
 797 vfatGrabFCB(
 798     PDEVICE_EXTENSION pVCB,
 799     PVFATFCB pFCB);
 800
 801 VOID
 802 vfatReleaseFCB(
 803     PDEVICE_EXTENSION pVCB,
 804     PVFATFCB pFCB);
 805
 806 PVFATFCB
 807 vfatGrabFCBFromTable(
 808     PDEVICE_EXTENSION pDeviceExt,
 809     PUNICODE_STRING pFileNameU);
 810
 811 PVFATFCB
 812 vfatMakeRootFCB(
 813     PDEVICE_EXTENSION pVCB);
 814
 815 PVFATFCB
 816 vfatOpenRootFCB(
 817     PDEVICE_EXTENSION pVCB);
 818
 819 BOOLEAN
 820 vfatFCBIsDirectory(
 821     PVFATFCB FCB);
 822
 823 BOOLEAN
 824 vfatFCBIsRoot(
 825     PVFATFCB FCB);
 826
 827 NTSTATUS
 828 vfatAttachFCBToFileObject(
 829     PDEVICE_EXTENSION vcb,
 830     PVFATFCB fcb,
 831     PFILE_OBJECT fileObject);
 832
 833 NTSTATUS
 834 vfatDirFindFile(
 835     PDEVICE_EXTENSION pVCB,
 836     PVFATFCB parentFCB,
 837     PUNICODE_STRING FileToFindU,
 838     PVFATFCB *fileFCB);
 839
 840 NTSTATUS
 841 vfatGetFCBForFile(
 842     PDEVICE_EXTENSION pVCB,
 843     PVFATFCB *pParentFCB,
 844     PVFATFCB *pFCB,
 845     PUNICODE_STRING pFileNameU);
 846
 847 NTSTATUS
 848 vfatMakeFCBFromDirEntry(
 849     PVCB vcb,
 850     PVFATFCB directoryFCB,
 851     PVFAT_DIRENTRY_CONTEXT DirContext,
 852     PVFATFCB *fileFCB);
 853
 854 /* finfo.c */
 855
 856 NTSTATUS
 857 VfatQueryInformation(
 858     PVFAT_IRP_CONTEXT IrpContext);
 859
 860 NTSTATUS
 861 VfatSetInformation(
 862     PVFAT_IRP_CONTEXT IrpContext);
 863
 864 NTSTATUS
 865 VfatSetAllocationSizeInformation(
 866     PFILE_OBJECT FileObject,
 867     PVFATFCB Fcb,
 868     PDEVICE_EXTENSION DeviceExt,
 869     PLARGE_INTEGER AllocationSize);
 870
 871 /* flush.c */
 872
 873 NTSTATUS
 874 VfatFlush(
 875     PVFAT_IRP_CONTEXT IrpContext);
 876
 877 NTSTATUS
 878 VfatFlushVolume(
 879     PDEVICE_EXTENSION DeviceExt,
 880     PVFATFCB VolumeFcb);
 881
 882 /* fsctl.c */
 883
 884 NTSTATUS
 885 VfatFileSystemControl(
 886     PVFAT_IRP_CONTEXT IrpContext);
 887
 888 /* iface.c */
 889
 890 NTSTATUS
 891 NTAPI
 892 DriverEntry(
 893     PDRIVER_OBJECT DriverObject,
 894     PUNICODE_STRING RegistryPath);
 895
 896
 897 /* misc.c */
 898
 899 NTSTATUS
 900 VfatQueueRequest(
 901     PVFAT_IRP_CONTEXT IrpContext);
 902
 903 PVFAT_IRP_CONTEXT
 904 VfatAllocateIrpContext(
 905     PDEVICE_OBJECT DeviceObject,
 906     PIRP Irp);
 907
 908 VOID
 909 VfatFreeIrpContext(
 910     PVFAT_IRP_CONTEXT IrpContext);
 911
 912 DRIVER_DISPATCH
 913 VfatBuildRequest;
 914
 915 NTSTATUS
 916 NTAPI
 917 VfatBuildRequest(
 918     PDEVICE_OBJECT DeviceObject,
 919     PIRP Irp);
 920
 921 PVOID
 922 VfatGetUserBuffer(
 923     IN PIRP);
 924
 925 NTSTATUS
 926 VfatLockUserBuffer(
 927     IN PIRP,
 928     IN ULONG,
 929     IN LOCK_OPERATION);
 930
 931 /* pnp.c */
 932
 933 NTSTATUS
 934 VfatPnp(
 935     PVFAT_IRP_CONTEXT IrpContext);
 936
 937 /* rw.c */
 938
 939 NTSTATUS
 940 VfatRead(
 941     PVFAT_IRP_CONTEXT IrpContext);
 942
 943 NTSTATUS
 944 VfatWrite(
 945     PVFAT_IRP_CONTEXT IrpContext);
 946
 947 NTSTATUS
 948 NextCluster(
 949     PDEVICE_EXTENSION DeviceExt,
 950     ULONG FirstCluster,
 951     PULONG CurrentCluster,
 952     BOOLEAN Extend);
 953
 954 /* shutdown.c */
 955
 956 DRIVER_DISPATCH
 957 VfatShutdown;
 958
 959 NTSTATUS
 960 NTAPI
 961 VfatShutdown(
 962     PDEVICE_OBJECT DeviceObject,
 963     PIRP Irp);
 964
 965 /* string.c */
 966
 967 VOID
 968 vfatSplitPathName(
 969     PUNICODE_STRING PathNameU,
 970     PUNICODE_STRING DirNameU,
 971     PUNICODE_STRING FileNameU);
 972
 973 BOOLEAN
 974 vfatIsLongIllegal(
 975     WCHAR c);
 976
 977 BOOLEAN
 978 wstrcmpjoki(
 979     PWSTR s1,
 980     PWSTR s2);
 981
 982 /* volume.c */
 983
 984 NTSTATUS
 985 VfatQueryVolumeInformation(
 986     PVFAT_IRP_CONTEXT IrpContext);
 987
 988 NTSTATUS
 989 VfatSetVolumeInformation(
 990     PVFAT_IRP_CONTEXT IrpContext);
 991
 992 #endif /* _FASTFAT_PCH_ */