reactos/lib/fslib/vfatlib/check/vfat.h

   1 /* $Id: vfat.h 16656 2005-07-20 02:52:52Z ion $ */
   2
   3 #include <ddk/ntifs.h>
   4 #include <ddk/ntdddisk.h>
   5 #include <ndk/ntndk.h>
   6 #include <limits.h>
   7 #include <debug.h>
   8
   9 #define USE_ROS_CC_AND_FS
  10
  11 #include <pshpack1.h>
  12 struct _BootSector
  13 {
  14   unsigned char  magic0, res0, magic1;
  15   unsigned char  OEMName[8];
  16   unsigned short BytesPerSector;
  17   unsigned char  SectorsPerCluster;
  18   unsigned short ReservedSectors;
  19   unsigned char  FATCount;
  20   unsigned short RootEntries, Sectors;
  21   unsigned char  Media;
  22   unsigned short FATSectors, SectorsPerTrack, Heads;
  23   unsigned long  HiddenSectors, SectorsHuge;
  24   unsigned char  Drive, Res1, Sig;
  25   unsigned long  VolumeID;
  26   unsigned char  VolumeLabel[11], SysType[8];
  27   unsigned char  Res2[448];
  28   unsigned short Signatur1;
  29 };
  30
  31 struct _BootSector32
  32 {
  33   unsigned char  magic0, res0, magic1;                  // 0
  34   unsigned char  OEMName[8];                            // 3
  35   unsigned short BytesPerSector;                        // 11
  36   unsigned char  SectorsPerCluster;                     // 13
  37   unsigned short ReservedSectors;                       // 14
  38   unsigned char  FATCount;                              // 16
  39   unsigned short RootEntries, Sectors;                  // 17
  40   unsigned char  Media;                                 // 21
  41   unsigned short FATSectors, SectorsPerTrack, Heads;    // 22
  42   unsigned long  HiddenSectors, SectorsHuge;            // 28
  43   unsigned long  FATSectors32;                          // 36
  44   unsigned short ExtFlag;                               // 40
  45   unsigned short FSVersion;                             // 42
  46   unsigned long  RootCluster;                           // 44
  47   unsigned short FSInfoSector;                          // 48
  48   unsigned short BootBackup;                            // 50
  49   unsigned char  Res3[12];                              // 52
  50   unsigned char  Drive;                                 // 64
  51   unsigned char  Res4;                                  // 65
  52   unsigned char  ExtBootSignature;                      // 66
  53   unsigned long  VolumeID;                              // 67
  54   unsigned char  VolumeLabel[11], SysType[8];           // 71
  55   unsigned char  Res2[420];                             // 90
  56   unsigned short Signature1;                            // 510
  57 };
  58
  59 struct _BootSectorFatX
  60 {
  61    unsigned char SysType[4];        // 0
  62    unsigned long VolumeID;          // 4
  63    unsigned long SectorsPerCluster; // 8
  64    unsigned short FATCount;         // 12
  65    unsigned long Unknown;           // 14
  66    unsigned char Unused[4078];      // 18
  67 };
  68
  69 struct _FsInfoSector
  70 {
  71   unsigned long  ExtBootSignature2;                     // 0
  72   unsigned char  Res6[480];                             // 4
  73   unsigned long  FSINFOSignature;                       // 484
  74   unsigned long  FreeCluster;                           // 488
  75   unsigned long  NextCluster;                           // 492
  76   unsigned char  Res7[12];                              // 496
  77   unsigned long  Signatur2;                             // 508
  78 };
  79
  80 typedef struct _BootSector BootSector;
  81
  82 struct _FATDirEntry
  83 {
  84   union
  85   {
  86      struct { unsigned char Filename[8], Ext[3]; };
  87      unsigned char ShortName[11];
  88   };
  89   unsigned char  Attrib;
  90   unsigned char  lCase;
  91   unsigned char  CreationTimeMs;
  92   unsigned short CreationTime,CreationDate,AccessDate;
  93   unsigned short FirstClusterHigh;                      // higher
  94   unsigned short UpdateTime;                            //time create/update
  95   unsigned short UpdateDate;                            //date create/update
  96   unsigned short FirstCluster;
  97   unsigned long  FileSize;
  98 };
  99
 100 typedef struct _FATDirEntry FAT_DIR_ENTRY, *PFAT_DIR_ENTRY;
 101
 102 struct _FATXDirEntry
 103 {
 104    unsigned char FilenameLength; // 0
 105    unsigned char Attrib;         // 1
 106    unsigned char Filename[42];   // 2
 107    unsigned long FirstCluster;   // 44
 108    unsigned long FileSize;       // 48
 109    unsigned short UpdateTime;    // 52
 110    unsigned short UpdateDate;    // 54
 111    unsigned short CreationTime;  // 56
 112    unsigned short CreationDate;  // 58
 113    unsigned short AccessTime;    // 60
 114    unsigned short AccessDate;    // 62
 115 };
 116
 117 struct _slot
 118 {
 119   unsigned char id;               // sequence number for slot
 120   WCHAR  name0_4[5];              // first 5 characters in name
 121   unsigned char attr;             // attribute byte
 122   unsigned char reserved;         // always 0
 123   unsigned char alias_checksum;   // checksum for 8.3 alias
 124   WCHAR  name5_10[6];             // 6 more characters in name
 125   unsigned char start[2];         // starting cluster number
 126   WCHAR  name11_12[2];            // last 2 characters in name
 127 };
 128
 129 typedef struct _slot slot;
 130
 131 #include <poppack.h>
 132
 133 #define VFAT_CASE_LOWER_BASE    8               // base is lower case
 134 #define VFAT_CASE_LOWER_EXT     16              // extension is lower case
 135
 136 #define LONGNAME_MAX_LENGTH     256             // max length for a long filename
 137
 138 #define ENTRY_DELETED(DeviceExt, DirEntry) ((DeviceExt)->Flags & VCB_IS_FATX ? FATX_ENTRY_DELETED(&((DirEntry)->FatX)) : FAT_ENTRY_DELETED(&((DirEntry)->Fat)))
 139 #define ENTRY_VOLUME(DeviceExt, DirEntry)  ((DeviceExt)->Flags & VCB_IS_FATX ? FATX_ENTRY_VOLUME(&((DirEntry)->FatX)) : FAT_ENTRY_VOLUME(&((DirEntry)->Fat)))
 140 #define ENTRY_END(DeviceExt, DirEntry)     ((DeviceExt)->Flags & VCB_IS_FATX ? FATX_ENTRY_END(&((DirEntry)->FatX)) : FAT_ENTRY_END(&((DirEntry)->Fat)))
 141
 142 #define FAT_ENTRY_DELETED(DirEntry)  ((DirEntry)->Filename[0] == 0xe5)
 143 #define FAT_ENTRY_END(DirEntry)      ((DirEntry)->Filename[0] == 0)
 144 #define FAT_ENTRY_LONG(DirEntry)     (((DirEntry)->Attrib & 0x3f) == 0x0f)
 145 #define FAT_ENTRY_VOLUME(DirEntry)   (((DirEntry)->Attrib & 0x1f) == 0x08)
 146
 147 #define FATX_ENTRY_DELETED(DirEntry) ((DirEntry)->FilenameLength == 0xe5)
 148 #define FATX_ENTRY_END(DirEntry)     ((DirEntry)->FilenameLength == 0xff)
 149 #define FATX_ENTRY_LONG(DirEntry)    (FALSE)
 150 #define FATX_ENTRY_VOLUME(DirEntry)  (((DirEntry)->Attrib & 0x1f) == 0x08)
 151
 152 #define FAT_ENTRIES_PER_PAGE   (PAGE_SIZE / sizeof (FAT_DIR_ENTRY))
 153 #define FATX_ENTRIES_PER_PAGE  (PAGE_SIZE / sizeof (FATX_DIR_ENTRY))
 154
 155 typedef struct _FATXDirEntry FATX_DIR_ENTRY, *PFATX_DIR_ENTRY;
 156
 157 union _DIR_ENTRY
 158 {
 159    FAT_DIR_ENTRY Fat;
 160    FATX_DIR_ENTRY FatX;
 161 };
 162
 163 typedef union _DIR_ENTRY DIR_ENTRY, *PDIR_ENTRY;
 164
 165 #define BLOCKSIZE 512
 166
 167 #define FAT16  (1)
 168 #define FAT12  (2)
 169 #define FAT32  (3)
 170 #define FATX16 (4)
 171 #define FATX32 (5)
 172
 173 #define VCB_VOLUME_LOCKED       0x0001
 174 #define VCB_DISMOUNT_PENDING    0x0002
 175 #define VCB_IS_FATX             0x0004
 176 #define VCB_IS_DIRTY            0x4000 /* Volume is dirty */
 177 #define VCB_CLEAR_DIRTY         0x8000 /* Clean dirty flag at shutdown */
 178
 179 typedef struct
 180 {
 181   ULONG VolumeID;
 182   ULONG FATStart;
 183   ULONG FATCount;
 184   ULONG FATSectors;
 185   ULONG rootDirectorySectors;
 186   ULONG rootStart;
 187   ULONG dataStart;
 188   ULONG RootCluster;
 189   ULONG SectorsPerCluster;
 190   ULONG BytesPerSector;
 191   ULONG BytesPerCluster;
 192   ULONG NumberOfClusters;
 193   ULONG FatType;
 194   ULONG Sectors;
 195   BOOLEAN FixedMedia;
 196 } FATINFO, *PFATINFO;
 197
 198 struct _VFATFCB;
 199 struct _VFAT_DIRENTRY_CONTEXT;
 200
 201 typedef struct _HASHENTRY
 202 {
 203   ULONG Hash;
 204   struct _VFATFCB* self;
 205   struct _HASHENTRY* next;
 206 }
 207 HASHENTRY;
 208
 209 #define FCB_HASH_TABLE_SIZE 65536
 210
 211 typedef struct DEVICE_EXTENSION *PDEVICE_EXTENSION;
 212
 213 typedef NTSTATUS (*PGET_NEXT_CLUSTER)(PDEVICE_EXTENSION,ULONG,PULONG);
 214 typedef NTSTATUS (*PFIND_AND_MARK_AVAILABLE_CLUSTER)(PDEVICE_EXTENSION,PULONG);
 215 typedef NTSTATUS (*PWRITE_CLUSTER)(PDEVICE_EXTENSION,ULONG,ULONG,PULONG);
 216
 217 typedef NTSTATUS (*PGET_NEXT_DIR_ENTRY)(PVOID*,PVOID*,struct _VFATFCB*,struct _VFAT_DIRENTRY_CONTEXT*,BOOLEAN);
 218
 219 typedef struct DEVICE_EXTENSION
 220 {
 221   ERESOURCE DirResource;
 222   ERESOURCE FatResource;
 223
 224   KSPIN_LOCK FcbListLock;
 225   LIST_ENTRY FcbListHead;
 226   ULONG HashTableSize;
 227   struct _HASHENTRY** FcbHashTable;
 228
 229   PDEVICE_OBJECT StorageDevice;
 230   PFILE_OBJECT FATFileObject;
 231   FATINFO FatInfo;
 232   ULONG LastAvailableCluster;
 233   ULONG AvailableClusters;
 234   BOOLEAN AvailableClustersValid;
 235   ULONG Flags;
 236   struct _VFATFCB * VolumeFcb;
 237
 238   /* Pointers to functions for manipulating FAT. */
 239   PGET_NEXT_CLUSTER GetNextCluster;
 240   PFIND_AND_MARK_AVAILABLE_CLUSTER FindAndMarkAvailableCluster;
 241   PWRITE_CLUSTER WriteCluster;
 242   ULONG CleanShutBitMask;
 243
 244   /* Pointers to functions for manipulating directory entries. */
 245   PGET_NEXT_DIR_ENTRY GetNextDirEntry;
 246
 247   ULONG BaseDateYear;
 248
 249   LIST_ENTRY VolumeListEntry;
 250 } DEVICE_EXTENSION, VCB, *PVCB;
 251
 252 typedef struct
 253 {
 254   PDRIVER_OBJECT DriverObject;
 255   PDEVICE_OBJECT DeviceObject;
 256   ULONG Flags;
 257   ERESOURCE VolumeListLock;
 258   LIST_ENTRY VolumeListHead;
 259   NPAGED_LOOKASIDE_LIST FcbLookasideList;
 260   NPAGED_LOOKASIDE_LIST CcbLookasideList;
 261   NPAGED_LOOKASIDE_LIST IrpContextLookasideList;
 262   FAST_IO_DISPATCH FastIoDispatch;
 263   CACHE_MANAGER_CALLBACKS CacheMgrCallbacks;
 264 } VFAT_GLOBAL_DATA, *PVFAT_GLOBAL_DATA;
 265
 266 extern PVFAT_GLOBAL_DATA VfatGlobalData;
 267
 268 #define FCB_CACHE_INITIALIZED   0x0001
 269 #define FCB_DELETE_PENDING      0x0002
 270 #define FCB_IS_FAT              0x0004
 271 #define FCB_IS_PAGE_FILE        0x0008
 272 #define FCB_IS_VOLUME           0x0010
 273 #define FCB_IS_DIRTY            0x0020
 274 #define FCB_IS_FATX_ENTRY       0x0040
 275
 276 typedef struct _VFATFCB
 277 {
 278   /* FCB header required by ROS/NT */
 279   FSRTL_COMMON_FCB_HEADER RFCB;
 280   SECTION_OBJECT_POINTERS SectionObjectPointers;
 281   ERESOURCE MainResource;
 282   ERESOURCE PagingIoResource;
 283   /* end FCB header required by ROS/NT */
 284
 285   /* directory entry for this file or directory */
 286   DIR_ENTRY entry;
 287
 288   /* Pointer to attributes in entry */
 289   PUCHAR Attributes;
 290
 291   /* long file name, points into PathNameBuffer */
 292   UNICODE_STRING LongNameU;
 293
 294   /* short file name */
 295   UNICODE_STRING ShortNameU;
 296
 297   /* directory name, points into PathNameBuffer */
 298   UNICODE_STRING DirNameU;
 299
 300   /* path + long file name 260 max*/
 301   UNICODE_STRING PathNameU;
 302
 303   /* buffer for PathNameU */
 304   PWCHAR PathNameBuffer;
 305
 306   /* buffer for ShortNameU */
 307   WCHAR ShortNameBuffer[13];
 308
 309   /* */
 310   LONG RefCount;
 311
 312   /* List of FCB's for this volume */
 313   LIST_ENTRY FcbListEntry;
 314
 315   /* pointer to the parent fcb */
 316   struct _VFATFCB* parentFcb;
 317
 318   /* Flags for the fcb */
 319   ULONG Flags;
 320
 321   /* pointer to the file object which has initialized the fcb */
 322   PFILE_OBJECT FileObject;
 323
 324   /* Directory index for the short name entry */
 325   ULONG dirIndex;
 326
 327   /* Directory index where the long name starts */
 328   ULONG startIndex;
 329
 330   /* Share access for the file object */
 331   SHARE_ACCESS FCBShareAccess;
 332
 333   /* Incremented on IRP_MJ_CREATE, decremented on IRP_MJ_CLEANUP */
 334   ULONG OpenHandleCount;
 335
 336   /* Entry into the hash table for the path + long name */
 337   HASHENTRY Hash;
 338
 339   /* Entry into the hash table for the path + short name */
 340   HASHENTRY ShortHash;
 341
 342   /* List of byte-range locks for this file */
 343   FILE_LOCK FileLock;
 344
 345   /*
 346    * Optimalization: caching of last read/write cluster+offset pair. Can't
 347    * be in VFATCCB because it must be reset everytime the allocated clusters
 348    * change.
 349    */
 350   FAST_MUTEX LastMutex;
 351   ULONG LastCluster;
 352   ULONG LastOffset;
 353 } VFATFCB, *PVFATFCB;
 354
 355 typedef struct _VFATCCB
 356 {
 357   LARGE_INTEGER  CurrentByteOffset;
 358   /* for DirectoryControl */
 359   ULONG Entry;
 360   /* for DirectoryControl */
 361   UNICODE_STRING SearchPattern;
 362 } VFATCCB, *PVFATCCB;
 363
 364 #define TAG_CCB 'BCCV'
 365 #define TAG_FCB 'BCFV'
 366 #define TAG_IRP 'PRIV'
 367
 368 #define ENTRIES_PER_SECTOR (BLOCKSIZE / sizeof(FATDirEntry))
 369
 370 typedef struct __DOSTIME
 371 {
 372    USHORT Second:5;
 373    USHORT Minute:6;
 374    USHORT Hour:5;
 375 }
 376 DOSTIME, *PDOSTIME;
 377
 378 typedef struct __DOSDATE
 379 {
 380    USHORT Day:5;
 381    USHORT Month:4;
 382    USHORT Year:5;
 383 }
 384 DOSDATE, *PDOSDATE;
 385
 386 #define IRPCONTEXT_CANWAIT          0x0001
 387 #define IRPCONTEXT_PENDINGRETURNED  0x0002
 388
 389 typedef struct
 390 {
 391    PIRP Irp;
 392    PDEVICE_OBJECT DeviceObject;
 393    PDEVICE_EXTENSION DeviceExt;
 394    ULONG Flags;
 395    WORK_QUEUE_ITEM WorkQueueItem;
 396    PIO_STACK_LOCATION Stack;
 397    UCHAR MajorFunction;
 398    UCHAR MinorFunction;
 399    PFILE_OBJECT FileObject;
 400    ULONG RefCount;
 401    KEVENT Event;
 402 } VFAT_IRP_CONTEXT, *PVFAT_IRP_CONTEXT;
 403
 404 typedef struct _VFAT_DIRENTRY_CONTEXT
 405 {
 406   ULONG StartIndex;
 407   ULONG DirIndex;
 408   DIR_ENTRY DirEntry;
 409   UNICODE_STRING LongNameU;
 410   UNICODE_STRING ShortNameU;
 411 } VFAT_DIRENTRY_CONTEXT, *PVFAT_DIRENTRY_CONTEXT;
 412
 413
 414 /*  ------------------------------------------------------  shutdown.c  */
 415
 416 NTSTATUS NTAPI VfatShutdown (PDEVICE_OBJECT DeviceObject,
 417                                PIRP Irp);
 418
 419 /*  --------------------------------------------------------  volume.c  */
 420
 421 NTSTATUS VfatQueryVolumeInformation (PVFAT_IRP_CONTEXT IrpContext);
 422
 423 NTSTATUS VfatSetVolumeInformation (PVFAT_IRP_CONTEXT IrpContext);
 424
 425 /*  ------------------------------------------------------  blockdev.c  */
 426
 427 NTSTATUS VfatReadDisk(IN PDEVICE_OBJECT pDeviceObject,
 428                       IN PLARGE_INTEGER ReadOffset,
 429                       IN ULONG ReadLength,
 430                       IN PUCHAR Buffer,
 431                       IN BOOLEAN Override);
 432
 433 NTSTATUS VfatReadDiskPartial (IN PVFAT_IRP_CONTEXT IrpContext,
 434                               IN PLARGE_INTEGER ReadOffset,
 435                               IN ULONG ReadLength,
 436                               IN ULONG BufferOffset,
 437                               IN BOOLEAN Wait);
 438
 439 NTSTATUS VfatWriteDiskPartial(IN PVFAT_IRP_CONTEXT IrpContext,
 440                               IN PLARGE_INTEGER WriteOffset,
 441                               IN ULONG WriteLength,
 442                               IN ULONG BufferOffset,
 443                               IN BOOLEAN Wait);
 444
 445 NTSTATUS VfatBlockDeviceIoControl (IN PDEVICE_OBJECT DeviceObject,
 446                                    IN ULONG CtlCode,
 447                                    IN PVOID InputBuffer,
 448                                    IN ULONG InputBufferSize,
 449                                    IN OUT PVOID OutputBuffer,
 450                                    IN OUT PULONG pOutputBufferSize,
 451                                    IN BOOLEAN Override);
 452
 453 /*  -----------------------------------------------------------  dir.c  */
 454
 455 NTSTATUS VfatDirectoryControl (PVFAT_IRP_CONTEXT);
 456
 457 BOOLEAN FsdDosDateTimeToSystemTime (PDEVICE_EXTENSION DeviceExt,
 458                                     USHORT DosDate,
 459                                     USHORT DosTime,
 460                                     PLARGE_INTEGER SystemTime);
 461
 462 BOOLEAN FsdSystemTimeToDosDateTime (PDEVICE_EXTENSION DeviceExt,
 463                                     PLARGE_INTEGER SystemTime,
 464                                     USHORT *pDosDate,
 465                                     USHORT *pDosTime);
 466
 467 /*  --------------------------------------------------------  create.c  */
 468
 469 NTSTATUS VfatCreate (PVFAT_IRP_CONTEXT IrpContext);
 470
 471 NTSTATUS VfatOpenFile (PDEVICE_EXTENSION DeviceExt,
 472                        PFILE_OBJECT FileObject,
 473                        PVFATFCB* parentFcb);
 474
 475 NTSTATUS FindFile (PDEVICE_EXTENSION DeviceExt,
 476                    PVFATFCB Parent,
 477                    PUNICODE_STRING FileToFindU,
 478                    PVFAT_DIRENTRY_CONTEXT DirContext,
 479                    BOOLEAN First);
 480
 481 VOID vfat8Dot3ToString (PFAT_DIR_ENTRY pEntry,
 482                         PUNICODE_STRING NameU);
 483
 484 NTSTATUS ReadVolumeLabel(PDEVICE_EXTENSION DeviceExt,
 485                          PVPB Vpb);
 486
 487 /*  ---------------------------------------------------------  close.c  */
 488
 489 NTSTATUS VfatClose (PVFAT_IRP_CONTEXT IrpContext);
 490
 491 NTSTATUS VfatCloseFile(PDEVICE_EXTENSION DeviceExt,
 492                        PFILE_OBJECT FileObject);
 493
 494 /*  -------------------------------------------------------  cleanup.c  */
 495
 496 NTSTATUS VfatCleanup (PVFAT_IRP_CONTEXT IrpContext);
 497
 498 /*  ---------------------------------------------------------  fastio.c  */
 499
 500 VOID
 501 VfatInitFastIoRoutines(PFAST_IO_DISPATCH FastIoDispatch);
 502
 503 BOOLEAN NTAPI
 504 VfatAcquireForLazyWrite(IN PVOID Context,
 505                         IN BOOLEAN Wait);
 506
 507 VOID NTAPI
 508 VfatReleaseFromLazyWrite(IN PVOID Context);
 509
 510 BOOLEAN NTAPI
 511 VfatAcquireForReadAhead(IN PVOID Context,
 512                         IN BOOLEAN Wait);
 513
 514 VOID NTAPI
 515 VfatReleaseFromReadAhead(IN PVOID Context);
 516
 517 /*  ---------------------------------------------------------  fsctl.c  */
 518
 519 NTSTATUS VfatFileSystemControl (PVFAT_IRP_CONTEXT IrpContext);
 520
 521 /*  ---------------------------------------------------------  finfo.c  */
 522
 523 NTSTATUS VfatQueryInformation (PVFAT_IRP_CONTEXT IrpContext);
 524
 525 NTSTATUS VfatSetInformation (PVFAT_IRP_CONTEXT IrpContext);
 526
 527 NTSTATUS
 528 VfatSetAllocationSizeInformation(PFILE_OBJECT FileObject,
 529                                  PVFATFCB Fcb,
 530                                  PDEVICE_EXTENSION DeviceExt,
 531                                  PLARGE_INTEGER AllocationSize);
 532
 533 /*  ---------------------------------------------------------  iface.c  */
 534
 535 NTSTATUS NTAPI DriverEntry (PDRIVER_OBJECT DriverObject,
 536                               PUNICODE_STRING RegistryPath);
 537
 538 /*  ---------------------------------------------------------  dirwr.c  */
 539
 540 NTSTATUS VfatAddEntry (PDEVICE_EXTENSION DeviceExt,
 541                        PUNICODE_STRING PathNameU,
 542                        PVFATFCB* Fcb,
 543                        PVFATFCB ParentFcb,
 544                        ULONG RequestedOptions,
 545                        UCHAR ReqAttr);
 546
 547 NTSTATUS VfatUpdateEntry (PVFATFCB pFcb);
 548
 549 NTSTATUS VfatDelEntry(PDEVICE_EXTENSION, PVFATFCB);
 550
 551 BOOLEAN
 552 vfatFindDirSpace(PDEVICE_EXTENSION DeviceExt,
 553                  PVFATFCB pDirFcb,
 554                  ULONG nbSlots,
 555                  PULONG start);
 556
 557 /*  --------------------------------------------------------  string.c  */
 558
 559 VOID
 560 vfatSplitPathName(PUNICODE_STRING PathNameU,
 561                   PUNICODE_STRING DirNameU,
 562                   PUNICODE_STRING FileNameU);
 563
 564 BOOLEAN vfatIsLongIllegal(WCHAR c);
 565
 566 BOOLEAN wstrcmpjoki (PWSTR s1,
 567                      PWSTR s2);
 568
 569 /*  -----------------------------------------------------------  fat.c  */
 570
 571 NTSTATUS FAT12GetNextCluster(PDEVICE_EXTENSION DeviceExt,
 572                              ULONG CurrentCluster,
 573                              PULONG NextCluster);
 574
 575 NTSTATUS FAT12FindAndMarkAvailableCluster(PDEVICE_EXTENSION DeviceExt,
 576                                           PULONG Cluster);
 577
 578 NTSTATUS FAT12WriteCluster(PDEVICE_EXTENSION DeviceExt,
 579                            ULONG ClusterToWrite,
 580                            ULONG NewValue,
 581                            PULONG OldValue);
 582
 583 NTSTATUS FAT16GetNextCluster(PDEVICE_EXTENSION DeviceExt,
 584                              ULONG CurrentCluster,
 585                              PULONG NextCluster);
 586
 587 NTSTATUS FAT16FindAndMarkAvailableCluster(PDEVICE_EXTENSION DeviceExt,
 588                                           PULONG Cluster);
 589
 590 NTSTATUS FAT16WriteCluster(PDEVICE_EXTENSION DeviceExt,
 591                            ULONG ClusterToWrite,
 592                            ULONG NewValue,
 593                            PULONG OldValue);
 594
 595 NTSTATUS FAT32GetNextCluster(PDEVICE_EXTENSION DeviceExt,
 596                              ULONG CurrentCluster,
 597                              PULONG NextCluster);
 598
 599 NTSTATUS FAT32FindAndMarkAvailableCluster(PDEVICE_EXTENSION DeviceExt,
 600                                           PULONG Cluster);
 601
 602 NTSTATUS FAT32WriteCluster(PDEVICE_EXTENSION DeviceExt,
 603                            ULONG ClusterToWrite,
 604                            ULONG NewValue,
 605                            PULONG OldValue);
 606
 607 NTSTATUS OffsetToCluster (PDEVICE_EXTENSION DeviceExt,
 608                           ULONG FirstCluster,
 609                           ULONG FileOffset,
 610                           PULONG Cluster,
 611                           BOOLEAN Extend);
 612
 613 ULONGLONG ClusterToSector (PDEVICE_EXTENSION DeviceExt,
 614                            ULONG Cluster);
 615
 616 NTSTATUS GetNextCluster (PDEVICE_EXTENSION DeviceExt,
 617                          ULONG CurrentCluster,
 618                          PULONG NextCluster);
 619
 620 NTSTATUS GetNextClusterExtend (PDEVICE_EXTENSION DeviceExt,
 621                                ULONG CurrentCluster,
 622                                PULONG NextCluster);
 623
 624 NTSTATUS CountAvailableClusters (PDEVICE_EXTENSION DeviceExt,
 625                                  PLARGE_INTEGER Clusters);
 626
 627 NTSTATUS
 628 WriteCluster(PDEVICE_EXTENSION DeviceExt,
 629              ULONG ClusterToWrite,
 630              ULONG NewValue);
 631
 632 /*  ------------------------------------------------------  direntry.c  */
 633
 634 ULONG  vfatDirEntryGetFirstCluster (PDEVICE_EXTENSION  pDeviceExt,
 635                                     PDIR_ENTRY  pDirEntry);
 636
 637 BOOLEAN VfatIsDirectoryEmpty(PVFATFCB Fcb);
 638
 639 NTSTATUS FATGetNextDirEntry(PVOID * pContext,
 640                              PVOID * pPage,
 641                              IN PVFATFCB pDirFcb,
 642                              IN PVFAT_DIRENTRY_CONTEXT DirContext,
 643                              BOOLEAN First);
 644
 645 NTSTATUS FATXGetNextDirEntry(PVOID * pContext,
 646                              PVOID * pPage,
 647                              IN PVFATFCB pDirFcb,
 648                              IN PVFAT_DIRENTRY_CONTEXT DirContext,
 649                              BOOLEAN First);
 650
 651 /*  -----------------------------------------------------------  fcb.c  */
 652
 653 PVFATFCB vfatNewFCB (PDEVICE_EXTENSION  pVCB,
 654                         PUNICODE_STRING pFileNameU);
 655
 656 VOID vfatDestroyFCB (PVFATFCB  pFCB);
 657
 658 VOID vfatDestroyCCB(PVFATCCB pCcb);
 659
 660 VOID vfatGrabFCB (PDEVICE_EXTENSION  pVCB,
 661                   PVFATFCB  pFCB);
 662
 663 VOID vfatReleaseFCB (PDEVICE_EXTENSION  pVCB,
 664                      PVFATFCB  pFCB);
 665
 666 VOID vfatAddFCBToTable (PDEVICE_EXTENSION  pVCB,
 667                         PVFATFCB  pFCB);
 668
 669 PVFATFCB vfatGrabFCBFromTable (PDEVICE_EXTENSION  pDeviceExt,
 670                                PUNICODE_STRING  pFileNameU);
 671
 672 PVFATFCB vfatMakeRootFCB (PDEVICE_EXTENSION  pVCB);
 673
 674 PVFATFCB vfatOpenRootFCB (PDEVICE_EXTENSION  pVCB);
 675
 676 BOOLEAN vfatFCBIsDirectory (PVFATFCB FCB);
 677
 678 BOOLEAN vfatFCBIsRoot(PVFATFCB FCB);
 679
 680 NTSTATUS vfatAttachFCBToFileObject (PDEVICE_EXTENSION  vcb,
 681                                     PVFATFCB  fcb,
 682                                     PFILE_OBJECT  fileObject);
 683
 684 NTSTATUS vfatDirFindFile (PDEVICE_EXTENSION  pVCB,
 685                           PVFATFCB  parentFCB,
 686                           PUNICODE_STRING FileToFindU,
 687                           PVFATFCB * fileFCB);
 688
 689 NTSTATUS vfatGetFCBForFile (PDEVICE_EXTENSION  pVCB,
 690                             PVFATFCB  *pParentFCB,
 691                             PVFATFCB  *pFCB,
 692                             PUNICODE_STRING pFileNameU);
 693
 694 NTSTATUS vfatMakeFCBFromDirEntry (PVCB  vcb,
 695                                   PVFATFCB  directoryFCB,
 696                                   PVFAT_DIRENTRY_CONTEXT DirContext,
 697                                   PVFATFCB * fileFCB);
 698
 699 /*  ------------------------------------------------------------  rw.c  */
 700
 701 NTSTATUS VfatRead (PVFAT_IRP_CONTEXT IrpContext);
 702
 703 NTSTATUS VfatWrite (PVFAT_IRP_CONTEXT IrpContext);
 704
 705 NTSTATUS NextCluster(PDEVICE_EXTENSION DeviceExt,
 706                      ULONG FirstCluster,
 707                      PULONG CurrentCluster,
 708                      BOOLEAN Extend);
 709
 710 /*  -----------------------------------------------------------  misc.c  */
 711
 712 NTSTATUS VfatQueueRequest(PVFAT_IRP_CONTEXT IrpContext);
 713
 714 PVFAT_IRP_CONTEXT VfatAllocateIrpContext(PDEVICE_OBJECT DeviceObject,
 715                                          PIRP Irp);
 716
 717 VOID VfatFreeIrpContext(PVFAT_IRP_CONTEXT IrpContext);
 718
 719 NTSTATUS NTAPI VfatBuildRequest (PDEVICE_OBJECT DeviceObject,
 720                                    PIRP Irp);
 721
 722 PVOID VfatGetUserBuffer(IN PIRP);
 723
 724 NTSTATUS VfatLockUserBuffer(IN PIRP, IN ULONG,
 725                             IN LOCK_OPERATION);
 726
 727 NTSTATUS
 728 VfatSetExtendedAttributes(PFILE_OBJECT FileObject,
 729                           PVOID Ea,
 730                           ULONG EaLength);
 731 /*  ------------------------------------------------------------- flush.c  */
 732
 733 NTSTATUS VfatFlush(PVFAT_IRP_CONTEXT IrpContext);
 734
 735 NTSTATUS VfatFlushVolume(PDEVICE_EXTENSION DeviceExt, PVFATFCB VolumeFcb);
 736
 737
 738 /* EOF */