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 #ifdef __GNUC__
  10 #define INIT_SECTION __attribute__((section ("INIT")))
  11 #else
  12 #define INIT_SECTION /* Done via alloc_text for MSC */
  13 #endif
  14
  15 #define USE_ROS_CC_AND_FS
  16 #if 0
  17 #ifndef _MSC_VER
  18 #define ENABLE_SWAPOUT
  19 #endif
  20 #endif
  21
  22 #define ROUND_DOWN(n, align) \
  23     (((ULONG)n) & ~((align) - 1l))
  24
  25 #define ROUND_UP(n, align) \
  26     ROUND_DOWN(((ULONG)n) + (align) - 1, (align))
  27
  28 #define ROUND_DOWN_64(n, align) \
  29     (((ULONGLONG)n) & ~((align) - 1LL))
  30
  31 #define ROUND_UP_64(n, align) \
  32     ROUND_DOWN_64(((ULONGLONG)n) + (align) - 1LL, (align))
  33
  34 #include <pshpack1.h>
  35 struct _BootSector
  36 {
  37     unsigned char  magic0, res0, magic1;
  38     unsigned char  OEMName[8];
  39     unsigned short BytesPerSector;
  40     unsigned char  SectorsPerCluster;
  41     unsigned short ReservedSectors;
  42     unsigned char  FATCount;
  43     unsigned short RootEntries, Sectors;
  44     unsigned char  Media;
  45     unsigned short FATSectors, SectorsPerTrack, Heads;
  46     unsigned long  HiddenSectors, SectorsHuge;
  47     unsigned char  Drive, Res1, Sig;
  48     unsigned long  VolumeID;
  49     unsigned char  VolumeLabel[11], SysType[8];
  50     unsigned char  Res2[448];
  51     unsigned short Signatur1;
  52 };
  53
  54 struct _BootSector32
  55 {
  56     unsigned char  magic0, res0, magic1;                        // 0
  57     unsigned char  OEMName[8];                          // 3
  58     unsigned short BytesPerSector;                      // 11
  59     unsigned char  SectorsPerCluster;                   // 13
  60     unsigned short ReservedSectors;                     // 14
  61     unsigned char  FATCount;                            // 16
  62     unsigned short RootEntries, Sectors;                        // 17
  63     unsigned char  Media;                                       // 21
  64     unsigned short FATSectors, SectorsPerTrack, Heads;  // 22
  65     unsigned long  HiddenSectors, SectorsHuge;          // 28
  66     unsigned long  FATSectors32;                                // 36
  67     unsigned short ExtFlag;                             // 40
  68     unsigned short FSVersion;                           // 42
  69     unsigned long  RootCluster;                         // 44
  70     unsigned short FSInfoSector;                                // 48
  71     unsigned short BootBackup;                          // 50
  72     unsigned char  Res3[12];                            // 52
  73     unsigned char  Drive;                                       // 64
  74     unsigned char  Res4;                                        // 65
  75     unsigned char  ExtBootSignature;                    // 66
  76     unsigned long  VolumeID;                            // 67
  77     unsigned char  VolumeLabel[11], SysType[8];         // 71
  78     unsigned char  Res2[420];                           // 90
  79     unsigned short Signature1;                          // 510
  80 };
  81
  82 struct _BootSectorFatX
  83 {
  84     unsigned char SysType[4];        // 0
  85     unsigned long VolumeID;          // 4
  86     unsigned long SectorsPerCluster; // 8
  87     unsigned short FATCount;         // 12
  88     unsigned long Unknown;           // 14
  89     unsigned char Unused[4078];      // 18
  90 };
  91
  92 struct _FsInfoSector
  93 {
  94     unsigned long  ExtBootSignature2;                   // 0
  95     unsigned char  Res6[480];                           // 4
  96     unsigned long  FSINFOSignature;                     // 484
  97     unsigned long  FreeCluster;                         // 488
  98     unsigned long  NextCluster;                         // 492
  99     unsigned char  Res7[12];                            // 496
 100     unsigned long  Signatur2;                           // 508
 101 };
 102
 103 typedef struct _BootSector BootSector;
 104
 105 struct _FATDirEntry
 106 {
 107     union
 108     {
 109         struct { unsigned char Filename[8], Ext[3]; };
 110         unsigned char ShortName[11];
 111     };
 112     unsigned char  Attrib;
 113     unsigned char  lCase;
 114     unsigned char  CreationTimeMs;
 115     unsigned short CreationTime,CreationDate,AccessDate;
 116     union
 117     {
 118         unsigned short FirstClusterHigh; // FAT32
 119         unsigned short ExtendedAttributes; // FAT12/FAT16
 120     };
 121     unsigned short UpdateTime;                            //time create/update
 122     unsigned short UpdateDate;                            //date create/update
 123     unsigned short FirstCluster;
 124     unsigned long  FileSize;
 125 };
 126
 127 #define FAT_EAFILE  "EA DATA. SF"
 128
 129 typedef struct _EAFileHeader FAT_EA_FILE_HEADER, *PFAT_EA_FILE_HEADER;
 130
 131 struct _EAFileHeader
 132 {
 133     unsigned short Signature; // ED
 134     unsigned short Unknown[15];
 135     unsigned short EASetTable[240];
 136 };
 137
 138 typedef struct _EASetHeader FAT_EA_SET_HEADER, *PFAT_EA_SET_HEADER;
 139
 140 struct _EASetHeader
 141 {
 142     unsigned short Signature; // EA
 143     unsigned short Offset; // relative offset, same value as in the EASetTable
 144     unsigned short Unknown1[2];
 145     char TargetFileName[12];
 146     unsigned short Unknown2[3];
 147     unsigned int EALength;
 148     // EA Header
 149 };
 150
 151 typedef struct _EAHeader FAT_EA_HEADER, *PFAT_EA_HEADER;
 152
 153 struct _EAHeader
 154 {
 155     unsigned char Unknown;
 156     unsigned char EANameLength;
 157     unsigned short EAValueLength;
 158     // Name Data
 159     // Value Data
 160 };
 161
 162 typedef struct _FATDirEntry FAT_DIR_ENTRY, *PFAT_DIR_ENTRY;
 163
 164 struct _FATXDirEntry
 165 {
 166     unsigned char FilenameLength; // 0
 167     unsigned char Attrib;         // 1
 168     unsigned char Filename[42];   // 2
 169     unsigned long FirstCluster;   // 44
 170     unsigned long FileSize;       // 48
 171     unsigned short UpdateTime;    // 52
 172     unsigned short UpdateDate;    // 54
 173     unsigned short CreationTime;  // 56
 174     unsigned short CreationDate;  // 58
 175     unsigned short AccessTime;    // 60
 176     unsigned short AccessDate;    // 62
 177 };
 178
 179 struct _slot
 180 {
 181     unsigned char id;               // sequence number for slot
 182     WCHAR  name0_4[5];              // first 5 characters in name
 183     unsigned char attr;             // attribute byte
 184     unsigned char reserved;         // always 0
 185     unsigned char alias_checksum;   // checksum for 8.3 alias
 186     WCHAR  name5_10[6];             // 6 more characters in name
 187     unsigned char start[2];         // starting cluster number
 188     WCHAR  name11_12[2];            // last 2 characters in name
 189 };
 190
 191 typedef struct _slot slot;
 192
 193 #include <poppack.h>
 194
 195 #define VFAT_CASE_LOWER_BASE    8               // base is lower case
 196 #define VFAT_CASE_LOWER_EXT     16              // extension is lower case
 197
 198 #define LONGNAME_MAX_LENGTH     256             // max length for a long filename
 199
 200 #define ENTRY_DELETED(DeviceExt, DirEntry) (BooleanFlagOn(DeviceExt->Flags, VCB_IS_FATX) ? FATX_ENTRY_DELETED(&((DirEntry)->FatX)) : FAT_ENTRY_DELETED(&((DirEntry)->Fat)))
 201 #define ENTRY_VOLUME(DeviceExt, DirEntry) (BooleanFlagOn(DeviceExt->Flags, VCB_IS_FATX) ? FATX_ENTRY_VOLUME(&((DirEntry)->FatX)) : FAT_ENTRY_VOLUME(&((DirEntry)->Fat)))
 202 #define ENTRY_END(DeviceExt, DirEntry) (BooleanFlagOn(DeviceExt->Flags, VCB_IS_FATX) ? FATX_ENTRY_END(&((DirEntry)->FatX)) : FAT_ENTRY_END(&((DirEntry)->Fat)))
 203
 204 #define FAT_ENTRY_DELETED(DirEntry)  ((DirEntry)->Filename[0] == 0xe5)
 205 #define FAT_ENTRY_END(DirEntry)      ((DirEntry)->Filename[0] == 0)
 206 #define FAT_ENTRY_LONG(DirEntry)     (((DirEntry)->Attrib & 0x3f) == 0x0f)
 207 #define FAT_ENTRY_VOLUME(DirEntry)   (((DirEntry)->Attrib & 0x1f) == 0x08)
 208
 209 #define FATX_ENTRY_DELETED(DirEntry) ((DirEntry)->FilenameLength == 0xe5)
 210 #define FATX_ENTRY_END(DirEntry)     ((DirEntry)->FilenameLength == 0xff)
 211 #define FATX_ENTRY_LONG(DirEntry)    (FALSE)
 212 #define FATX_ENTRY_VOLUME(DirEntry)  (((DirEntry)->Attrib & 0x1f) == 0x08)
 213
 214 #define FAT_ENTRIES_PER_PAGE   (PAGE_SIZE / sizeof (FAT_DIR_ENTRY))
 215 #define FATX_ENTRIES_PER_PAGE  (PAGE_SIZE / sizeof (FATX_DIR_ENTRY))
 216
 217 typedef struct _FATXDirEntry FATX_DIR_ENTRY, *PFATX_DIR_ENTRY;
 218
 219 union _DIR_ENTRY
 220 {
 221     FAT_DIR_ENTRY Fat;
 222     FATX_DIR_ENTRY FatX;
 223 };
 224
 225 typedef union _DIR_ENTRY DIR_ENTRY, *PDIR_ENTRY;
 226
 227 #define BLOCKSIZE 512
 228
 229 #define FAT16  (1)
 230 #define FAT12  (2)
 231 #define FAT32  (3)
 232 #define FATX16 (4)
 233 #define FATX32 (5)
 234
 235 #define VCB_VOLUME_LOCKED       0x0001
 236 #define VCB_DISMOUNT_PENDING    0x0002
 237 #define VCB_IS_FATX             0x0004
 238 #define VCB_IS_DIRTY            0x4000 /* Volume is dirty */
 239 #define VCB_CLEAR_DIRTY         0x8000 /* Clean dirty flag at shutdown */
 240
 241 typedef struct
 242 {
 243     ULONG VolumeID;
 244     CHAR VolumeLabel[11];
 245     ULONG FATStart;
 246     ULONG FATCount;
 247     ULONG FATSectors;
 248     ULONG rootDirectorySectors;
 249     ULONG rootStart;
 250     ULONG dataStart;
 251     ULONG RootCluster;
 252     ULONG SectorsPerCluster;
 253     ULONG BytesPerSector;
 254     ULONG BytesPerCluster;
 255     ULONG NumberOfClusters;
 256     ULONG FatType;
 257     ULONG Sectors;
 258     BOOLEAN FixedMedia;
 259 } FATINFO, *PFATINFO;
 260
 261 struct _VFATFCB;
 262 struct _VFAT_DIRENTRY_CONTEXT;
 263
 264 typedef struct _HASHENTRY
 265 {
 266     ULONG Hash;
 267     struct _VFATFCB* self;
 268     struct _HASHENTRY* next;
 269 }
 270 HASHENTRY;
 271
 272 typedef struct DEVICE_EXTENSION *PDEVICE_EXTENSION;
 273
 274 typedef NTSTATUS (*PGET_NEXT_CLUSTER)(PDEVICE_EXTENSION,ULONG,PULONG);
 275 typedef NTSTATUS (*PFIND_AND_MARK_AVAILABLE_CLUSTER)(PDEVICE_EXTENSION,PULONG);
 276 typedef NTSTATUS (*PWRITE_CLUSTER)(PDEVICE_EXTENSION,ULONG,ULONG,PULONG);
 277
 278 typedef NTSTATUS (*PGET_NEXT_DIR_ENTRY)(PVOID*,PVOID*,struct _VFATFCB*,struct _VFAT_DIRENTRY_CONTEXT*,BOOLEAN);
 279
 280 typedef struct DEVICE_EXTENSION
 281 {
 282     ERESOURCE DirResource;
 283     ERESOURCE FatResource;
 284
 285     KSPIN_LOCK FcbListLock;
 286     LIST_ENTRY FcbListHead;
 287     ULONG HashTableSize;
 288     struct _HASHENTRY **FcbHashTable;
 289
 290     PDEVICE_OBJECT VolumeDevice;
 291     PDEVICE_OBJECT StorageDevice;
 292     PFILE_OBJECT FATFileObject;
 293     FATINFO FatInfo;
 294     ULONG LastAvailableCluster;
 295     ULONG AvailableClusters;
 296     BOOLEAN AvailableClustersValid;
 297     ULONG Flags;
 298     struct _VFATFCB *VolumeFcb;
 299
 300     /* Pointers to functions for manipulating FAT. */
 301     PGET_NEXT_CLUSTER GetNextCluster;
 302     PFIND_AND_MARK_AVAILABLE_CLUSTER FindAndMarkAvailableCluster;
 303     PWRITE_CLUSTER WriteCluster;
 304     ULONG CleanShutBitMask;
 305
 306     /* Pointers to functions for manipulating directory entries. */
 307     PGET_NEXT_DIR_ENTRY GetNextDirEntry;
 308
 309     ULONG BaseDateYear;
 310
 311     LIST_ENTRY VolumeListEntry;
 312
 313     /* Notifications */
 314     LIST_ENTRY NotifyList;
 315     PNOTIFY_SYNC NotifySync;
 316
 317     /* Incremented on IRP_MJ_CREATE, decremented on IRP_MJ_CLOSE */
 318     ULONG OpenHandleCount;
 319
 320     /* VPBs for dismount */
 321     PVPB IoVPB;
 322     PVPB SpareVPB;
 323 } DEVICE_EXTENSION, VCB, *PVCB;
 324
 325 #define VFAT_BREAK_ON_CORRUPTION 1
 326
 327 typedef struct
 328 {
 329     PDRIVER_OBJECT DriverObject;
 330     PDEVICE_OBJECT DeviceObject;
 331     ULONG Flags;
 332     ERESOURCE VolumeListLock;
 333     LIST_ENTRY VolumeListHead;
 334     NPAGED_LOOKASIDE_LIST FcbLookasideList;
 335     NPAGED_LOOKASIDE_LIST CcbLookasideList;
 336     NPAGED_LOOKASIDE_LIST IrpContextLookasideList;
 337     FAST_IO_DISPATCH FastIoDispatch;
 338     CACHE_MANAGER_CALLBACKS CacheMgrCallbacks;
 339 } VFAT_GLOBAL_DATA, *PVFAT_GLOBAL_DATA;
 340
 341 extern PVFAT_GLOBAL_DATA VfatGlobalData;
 342
 343 #define FCB_CACHE_INITIALIZED   0x0001
 344 #define FCB_DELETE_PENDING      0x0002
 345 #define FCB_IS_FAT              0x0004
 346 #define FCB_IS_PAGE_FILE        0x0008
 347 #define FCB_IS_VOLUME           0x0010
 348 #define FCB_IS_DIRTY            0x0020
 349 #define FCB_IS_FATX_ENTRY       0x0040
 350
 351 typedef struct _VFATFCB
 352 {
 353     /* FCB header required by ROS/NT */
 354     FSRTL_COMMON_FCB_HEADER RFCB;
 355     SECTION_OBJECT_POINTERS SectionObjectPointers;
 356     ERESOURCE MainResource;
 357     ERESOURCE PagingIoResource;
 358     /* end FCB header required by ROS/NT */
 359
 360     /* directory entry for this file or directory */
 361     DIR_ENTRY entry;
 362
 363     /* Pointer to attributes in entry */
 364     PUCHAR Attributes;
 365
 366     /* long file name, points into PathNameBuffer */
 367     UNICODE_STRING LongNameU;
 368
 369     /* short file name */
 370     UNICODE_STRING ShortNameU;
 371
 372     /* directory name, points into PathNameBuffer */
 373     UNICODE_STRING DirNameU;
 374
 375     /* path + long file name 260 max*/
 376     UNICODE_STRING PathNameU;
 377
 378     /* buffer for PathNameU */
 379     PWCHAR PathNameBuffer;
 380
 381     /* buffer for ShortNameU */
 382     WCHAR ShortNameBuffer[13];
 383
 384     /* */
 385     LONG RefCount;
 386
 387     /* List of FCB's for this volume */
 388     LIST_ENTRY FcbListEntry;
 389
 390     /* List of FCB's for the parent */
 391     LIST_ENTRY ParentListEntry;
 392
 393     /* pointer to the parent fcb */
 394     struct _VFATFCB *parentFcb;
 395
 396     /* List for the children */
 397     LIST_ENTRY ParentListHead;
 398
 399     /* Flags for the fcb */
 400     ULONG Flags;
 401
 402     /* pointer to the file object which has initialized the fcb */
 403     PFILE_OBJECT FileObject;
 404
 405     /* Directory index for the short name entry */
 406     ULONG dirIndex;
 407
 408     /* Directory index where the long name starts */
 409     ULONG startIndex;
 410
 411     /* Share access for the file object */
 412     SHARE_ACCESS FCBShareAccess;
 413
 414     /* Incremented on IRP_MJ_CREATE, decremented on IRP_MJ_CLEANUP */
 415     ULONG OpenHandleCount;
 416
 417     /* Entry into the hash table for the path + long name */
 418     HASHENTRY Hash;
 419
 420     /* Entry into the hash table for the path + short name */
 421     HASHENTRY ShortHash;
 422
 423     /* List of byte-range locks for this file */
 424     FILE_LOCK FileLock;
 425
 426     /*
 427      * Optimization: caching of last read/write cluster+offset pair. Can't
 428      * be in VFATCCB because it must be reset everytime the allocated clusters
 429      * change.
 430      */
 431     FAST_MUTEX LastMutex;
 432     ULONG LastCluster;
 433     ULONG LastOffset;
 434 } VFATFCB, *PVFATFCB;
 435
 436 typedef struct _VFATCCB
 437 {
 438     LARGE_INTEGER  CurrentByteOffset;
 439     /* for DirectoryControl */
 440     ULONG Entry;
 441     /* for DirectoryControl */
 442     UNICODE_STRING SearchPattern;
 443 } VFATCCB, *PVFATCCB;
 444
 445 #define TAG_CCB  'BCCV'
 446 #define TAG_FCB  'BCFV'
 447 #define TAG_IRP  'PRIV'
 448 #define TAG_VFAT 'TAFV'
 449
 450 #define ENTRIES_PER_SECTOR (BLOCKSIZE / sizeof(FATDirEntry))
 451
 452 typedef struct __DOSTIME
 453 {
 454     USHORT Second:5;
 455     USHORT Minute:6;
 456     USHORT Hour:5;
 457 }
 458 DOSTIME, *PDOSTIME;
 459
 460 typedef struct __DOSDATE
 461 {
 462     USHORT Day:5;
 463     USHORT Month:4;
 464     USHORT Year:7;
 465 }
 466 DOSDATE, *PDOSDATE;
 467
 468 #define IRPCONTEXT_CANWAIT          0x0001
 469 #define IRPCONTEXT_COMPLETE         0x0002
 470 #define IRPCONTEXT_QUEUE            0x0004
 471 #define IRPCONTEXT_PENDINGRETURNED  0x0008
 472
 473 typedef struct
 474 {
 475     PIRP Irp;
 476     PDEVICE_OBJECT DeviceObject;
 477     PDEVICE_EXTENSION DeviceExt;
 478     ULONG Flags;
 479     WORK_QUEUE_ITEM WorkQueueItem;
 480     PIO_STACK_LOCATION Stack;
 481     UCHAR MajorFunction;
 482     UCHAR MinorFunction;
 483     PFILE_OBJECT FileObject;
 484     ULONG RefCount;
 485     KEVENT Event;
 486     CCHAR PriorityBoost;
 487 } VFAT_IRP_CONTEXT, *PVFAT_IRP_CONTEXT;
 488
 489 typedef struct _VFAT_DIRENTRY_CONTEXT
 490 {
 491     ULONG StartIndex;
 492     ULONG DirIndex;
 493     DIR_ENTRY DirEntry;
 494     UNICODE_STRING LongNameU;
 495     UNICODE_STRING ShortNameU;
 496 } VFAT_DIRENTRY_CONTEXT, *PVFAT_DIRENTRY_CONTEXT;
 497
 498 typedef struct _VFAT_MOVE_CONTEXT
 499 {
 500     ULONG FirstCluster;
 501     ULONG FileSize;
 502     USHORT CreationDate;
 503     USHORT CreationTime;
 504     BOOLEAN InPlace;
 505 } VFAT_MOVE_CONTEXT, *PVFAT_MOVE_CONTEXT;
 506
 507 FORCEINLINE
 508 NTSTATUS
 509 VfatMarkIrpContextForQueue(PVFAT_IRP_CONTEXT IrpContext)
 510 {
 511     PULONG Flags = &IrpContext->Flags;
 512
 513     *Flags &= ~IRPCONTEXT_COMPLETE;
 514     *Flags |= IRPCONTEXT_QUEUE;
 515
 516     return STATUS_PENDING;
 517 }
 518
 519 /* blockdev.c */
 520
 521 NTSTATUS
 522 VfatReadDisk(
 523     IN PDEVICE_OBJECT pDeviceObject,
 524     IN PLARGE_INTEGER ReadOffset,
 525     IN ULONG ReadLength,
 526     IN PUCHAR Buffer,
 527     IN BOOLEAN Override);
 528
 529 NTSTATUS
 530 VfatReadDiskPartial(
 531     IN PVFAT_IRP_CONTEXT IrpContext,
 532     IN PLARGE_INTEGER ReadOffset,
 533     IN ULONG ReadLength,
 534     IN ULONG BufferOffset,
 535     IN BOOLEAN Wait);
 536
 537 NTSTATUS
 538 VfatWriteDiskPartial(
 539     IN PVFAT_IRP_CONTEXT IrpContext,
 540     IN PLARGE_INTEGER WriteOffset,
 541     IN ULONG WriteLength,
 542     IN ULONG BufferOffset,
 543     IN BOOLEAN Wait);
 544
 545 NTSTATUS
 546 VfatBlockDeviceIoControl(
 547     IN PDEVICE_OBJECT DeviceObject,
 548     IN ULONG CtlCode,
 549     IN PVOID InputBuffer,
 550     IN ULONG InputBufferSize,
 551     IN OUT PVOID OutputBuffer,
 552     IN OUT PULONG pOutputBufferSize,
 553     IN BOOLEAN Override);
 554
 555 /* cleanup.c */
 556
 557 NTSTATUS
 558 VfatCleanup(
 559     PVFAT_IRP_CONTEXT IrpContext);
 560
 561 /* close.c */
 562
 563 NTSTATUS
 564 VfatClose(
 565     PVFAT_IRP_CONTEXT IrpContext);
 566
 567 NTSTATUS
 568 VfatCloseFile(
 569     PDEVICE_EXTENSION DeviceExt,
 570     PFILE_OBJECT FileObject);
 571
 572 /* create.c */
 573
 574 NTSTATUS
 575 VfatCreate(
 576     PVFAT_IRP_CONTEXT IrpContext);
 577
 578 NTSTATUS
 579 FindFile(
 580     PDEVICE_EXTENSION DeviceExt,
 581     PVFATFCB Parent,
 582     PUNICODE_STRING FileToFindU,
 583     PVFAT_DIRENTRY_CONTEXT DirContext,
 584     BOOLEAN First);
 585
 586 VOID
 587 vfat8Dot3ToString(
 588     PFAT_DIR_ENTRY pEntry,
 589     PUNICODE_STRING NameU);
 590
 591 NTSTATUS
 592 ReadVolumeLabel(
 593     PDEVICE_EXTENSION DeviceExt,
 594     PVPB Vpb);
 595
 596 /* dir.c */
 597
 598 NTSTATUS
 599 VfatDirectoryControl(
 600     PVFAT_IRP_CONTEXT IrpContext);
 601
 602 BOOLEAN
 603 FsdDosDateTimeToSystemTime(
 604     PDEVICE_EXTENSION DeviceExt,
 605     USHORT DosDate,
 606     USHORT DosTime,
 607     PLARGE_INTEGER SystemTime);
 608
 609 BOOLEAN
 610 FsdSystemTimeToDosDateTime(
 611     PDEVICE_EXTENSION DeviceExt,
 612     PLARGE_INTEGER SystemTime,
 613     USHORT *pDosDate,
 614     USHORT *pDosTime);
 615
 616 /* direntry.c */
 617
 618 ULONG
 619 vfatDirEntryGetFirstCluster(
 620     PDEVICE_EXTENSION pDeviceExt,
 621     PDIR_ENTRY pDirEntry);
 622
 623 BOOLEAN
 624 VfatIsDirectoryEmpty(
 625     PVFATFCB Fcb);
 626
 627 NTSTATUS
 628 FATGetNextDirEntry(
 629     PVOID *pContext,
 630     PVOID *pPage,
 631     IN PVFATFCB pDirFcb,
 632     IN PVFAT_DIRENTRY_CONTEXT DirContext,
 633     BOOLEAN First);
 634
 635 NTSTATUS
 636 FATXGetNextDirEntry(
 637     PVOID *pContext,
 638     PVOID *pPage,
 639     IN PVFATFCB pDirFcb,
 640     IN PVFAT_DIRENTRY_CONTEXT DirContext,
 641     BOOLEAN First);
 642
 643 /* dirwr.c */
 644
 645 NTSTATUS
 646 VfatAddEntry(
 647     PDEVICE_EXTENSION DeviceExt,
 648     PUNICODE_STRING PathNameU,
 649     PVFATFCB* Fcb,
 650     PVFATFCB ParentFcb,
 651     ULONG RequestedOptions,
 652     UCHAR ReqAttr,
 653     PVFAT_MOVE_CONTEXT MoveContext);
 654
 655 NTSTATUS
 656 VfatUpdateEntry(
 657     PVFATFCB pFcb);
 658
 659 NTSTATUS
 660 VfatDelEntry(
 661     PDEVICE_EXTENSION,
 662     PVFATFCB,
 663     PVFAT_MOVE_CONTEXT);
 664
 665 BOOLEAN
 666 vfatFindDirSpace(
 667     PDEVICE_EXTENSION DeviceExt,
 668     PVFATFCB pDirFcb,
 669     ULONG nbSlots,
 670     PULONG start);
 671
 672 NTSTATUS
 673 vfatRenameEntry(
 674     IN PDEVICE_EXTENSION DeviceExt,
 675     IN PVFATFCB pFcb,
 676     IN PUNICODE_STRING FileName,
 677     IN BOOLEAN CaseChangeOnly);
 678
 679 NTSTATUS
 680 VfatMoveEntry(
 681     IN PDEVICE_EXTENSION DeviceExt,
 682     IN PVFATFCB pFcb,
 683     IN PUNICODE_STRING FileName,
 684     IN PVFATFCB ParentFcb);
 685
 686 /* ea.h */
 687
 688 NTSTATUS
 689 VfatSetExtendedAttributes(
 690     PFILE_OBJECT FileObject,
 691     PVOID Ea,
 692     ULONG EaLength);
 693
 694 /* fastio.c */
 695
 696 VOID
 697 VfatInitFastIoRoutines(
 698     PFAST_IO_DISPATCH FastIoDispatch);
 699
 700 BOOLEAN
 701 NTAPI
 702 VfatAcquireForLazyWrite(
 703     IN PVOID Context,
 704     IN BOOLEAN Wait);
 705
 706 VOID
 707 NTAPI
 708 VfatReleaseFromLazyWrite(
 709     IN PVOID Context);
 710
 711 BOOLEAN
 712 NTAPI
 713 VfatAcquireForReadAhead(
 714     IN PVOID Context,
 715     IN BOOLEAN Wait);
 716
 717 VOID
 718 NTAPI
 719 VfatReleaseFromReadAhead(
 720     IN PVOID Context);
 721
 722 /* fat.c */
 723
 724 NTSTATUS
 725 FAT12GetNextCluster(
 726     PDEVICE_EXTENSION DeviceExt,
 727     ULONG CurrentCluster,
 728     PULONG NextCluster);
 729
 730 NTSTATUS
 731 FAT12FindAndMarkAvailableCluster(
 732     PDEVICE_EXTENSION DeviceExt,
 733     PULONG Cluster);
 734
 735 NTSTATUS
 736 FAT12WriteCluster(
 737     PDEVICE_EXTENSION DeviceExt,
 738     ULONG ClusterToWrite,
 739     ULONG NewValue,
 740     PULONG OldValue);
 741
 742 NTSTATUS
 743 FAT16GetNextCluster(
 744     PDEVICE_EXTENSION DeviceExt,
 745     ULONG CurrentCluster,
 746     PULONG NextCluster);
 747
 748 NTSTATUS
 749 FAT16FindAndMarkAvailableCluster(
 750     PDEVICE_EXTENSION DeviceExt,
 751     PULONG Cluster);
 752
 753 NTSTATUS
 754 FAT16WriteCluster(
 755     PDEVICE_EXTENSION DeviceExt,
 756     ULONG ClusterToWrite,
 757     ULONG NewValue,
 758     PULONG OldValue);
 759
 760 NTSTATUS
 761 FAT32GetNextCluster(
 762     PDEVICE_EXTENSION DeviceExt,
 763     ULONG CurrentCluster,
 764     PULONG NextCluster);
 765
 766 NTSTATUS
 767 FAT32FindAndMarkAvailableCluster(
 768     PDEVICE_EXTENSION DeviceExt,
 769     PULONG Cluster);
 770
 771 NTSTATUS
 772 FAT32WriteCluster(
 773     PDEVICE_EXTENSION DeviceExt,
 774     ULONG ClusterToWrite,
 775     ULONG NewValue,
 776     PULONG OldValue);
 777
 778 NTSTATUS
 779 OffsetToCluster(
 780     PDEVICE_EXTENSION DeviceExt,
 781     ULONG FirstCluster,
 782     ULONG FileOffset,
 783     PULONG Cluster,
 784     BOOLEAN Extend);
 785
 786 ULONGLONG
 787 ClusterToSector(
 788     PDEVICE_EXTENSION DeviceExt,
 789     ULONG Cluster);
 790
 791 NTSTATUS
 792 GetNextCluster(
 793     PDEVICE_EXTENSION DeviceExt,
 794     ULONG CurrentCluster,
 795     PULONG NextCluster);
 796
 797 NTSTATUS
 798 GetNextClusterExtend(
 799     PDEVICE_EXTENSION DeviceExt,
 800     ULONG CurrentCluster,
 801     PULONG NextCluster);
 802
 803 NTSTATUS
 804 CountAvailableClusters(
 805     PDEVICE_EXTENSION DeviceExt,
 806     PLARGE_INTEGER Clusters);
 807
 808 NTSTATUS
 809 WriteCluster(
 810     PDEVICE_EXTENSION DeviceExt,
 811     ULONG ClusterToWrite,
 812     ULONG NewValue);
 813
 814 /* fcb.c */
 815
 816 PVFATFCB
 817 vfatNewFCB(
 818     PDEVICE_EXTENSION pVCB,
 819     PUNICODE_STRING pFileNameU);
 820
 821 NTSTATUS
 822 vfatSetFCBNewDirName(
 823     PDEVICE_EXTENSION pVCB,
 824     PVFATFCB Fcb,
 825     PVFATFCB ParentFcb);
 826
 827 NTSTATUS
 828 vfatUpdateFCB(
 829     PDEVICE_EXTENSION pVCB,
 830     PVFATFCB Fcb,
 831     PVFAT_DIRENTRY_CONTEXT DirContext,
 832     PVFATFCB ParentFcb);
 833
 834 VOID
 835 vfatDestroyFCB(
 836     PVFATFCB pFCB);
 837
 838 VOID
 839 vfatDestroyCCB(
 840     PVFATCCB pCcb);
 841
 842 VOID
 843 vfatGrabFCB(
 844     PDEVICE_EXTENSION pVCB,
 845     PVFATFCB pFCB);
 846
 847 VOID
 848 vfatReleaseFCB(
 849     PDEVICE_EXTENSION pVCB,
 850     PVFATFCB pFCB);
 851
 852 PVFATFCB
 853 vfatGrabFCBFromTable(
 854     PDEVICE_EXTENSION pDeviceExt,
 855     PUNICODE_STRING pFileNameU);
 856
 857 PVFATFCB
 858 vfatMakeRootFCB(
 859     PDEVICE_EXTENSION pVCB);
 860
 861 PVFATFCB
 862 vfatOpenRootFCB(
 863     PDEVICE_EXTENSION pVCB);
 864
 865 BOOLEAN
 866 vfatFCBIsDirectory(
 867     PVFATFCB FCB);
 868
 869 BOOLEAN
 870 vfatFCBIsRoot(
 871     PVFATFCB FCB);
 872
 873 NTSTATUS
 874 vfatAttachFCBToFileObject(
 875     PDEVICE_EXTENSION vcb,
 876     PVFATFCB fcb,
 877     PFILE_OBJECT fileObject);
 878
 879 NTSTATUS
 880 vfatDirFindFile(
 881     PDEVICE_EXTENSION pVCB,
 882     PVFATFCB parentFCB,
 883     PUNICODE_STRING FileToFindU,
 884     PVFATFCB *fileFCB);
 885
 886 NTSTATUS
 887 vfatGetFCBForFile(
 888     PDEVICE_EXTENSION pVCB,
 889     PVFATFCB *pParentFCB,
 890     PVFATFCB *pFCB,
 891     PUNICODE_STRING pFileNameU);
 892
 893 NTSTATUS
 894 vfatMakeFCBFromDirEntry(
 895     PVCB vcb,
 896     PVFATFCB directoryFCB,
 897     PVFAT_DIRENTRY_CONTEXT DirContext,
 898     PVFATFCB *fileFCB);
 899
 900 /* finfo.c */
 901
 902 NTSTATUS
 903 VfatGetStandardInformation(
 904     PVFATFCB FCB,
 905     PFILE_STANDARD_INFORMATION StandardInfo,
 906     PULONG BufferLength);
 907
 908 NTSTATUS
 909 VfatGetBasicInformation(
 910     PFILE_OBJECT FileObject,
 911     PVFATFCB FCB,
 912     PDEVICE_OBJECT DeviceObject,
 913     PFILE_BASIC_INFORMATION BasicInfo,
 914     PULONG BufferLength);
 915
 916 NTSTATUS
 917 VfatQueryInformation(
 918     PVFAT_IRP_CONTEXT IrpContext);
 919
 920 NTSTATUS
 921 VfatSetInformation(
 922     PVFAT_IRP_CONTEXT IrpContext);
 923
 924 NTSTATUS
 925 VfatSetAllocationSizeInformation(
 926     PFILE_OBJECT FileObject,
 927     PVFATFCB Fcb,
 928     PDEVICE_EXTENSION DeviceExt,
 929     PLARGE_INTEGER AllocationSize);
 930
 931 /* flush.c */
 932
 933 NTSTATUS
 934 VfatFlush(
 935     PVFAT_IRP_CONTEXT IrpContext);
 936
 937 NTSTATUS
 938 VfatFlushVolume(
 939     PDEVICE_EXTENSION DeviceExt,
 940     PVFATFCB VolumeFcb);
 941
 942 /* fsctl.c */
 943
 944 NTSTATUS
 945 VfatFileSystemControl(
 946     PVFAT_IRP_CONTEXT IrpContext);
 947
 948 /* iface.c */
 949
 950 NTSTATUS
 951 NTAPI
 952 DriverEntry(
 953     PDRIVER_OBJECT DriverObject,
 954     PUNICODE_STRING RegistryPath);
 955
 956
 957 /* misc.c */
 958
 959 DRIVER_DISPATCH
 960 VfatBuildRequest;
 961
 962 NTSTATUS
 963 NTAPI
 964 VfatBuildRequest(
 965     PDEVICE_OBJECT DeviceObject,
 966     PIRP Irp);
 967
 968 PVOID
 969 VfatGetUserBuffer(
 970     IN PIRP,
 971     IN BOOLEAN Paging);
 972
 973 NTSTATUS
 974 VfatLockUserBuffer(
 975     IN PIRP,
 976     IN ULONG,
 977     IN LOCK_OPERATION);
 978
 979 BOOLEAN
 980 VfatCheckForDismount(
 981     IN PDEVICE_EXTENSION DeviceExt,
 982     IN BOOLEAN Create);
 983
 984 /* pnp.c */
 985
 986 NTSTATUS
 987 VfatPnp(
 988     PVFAT_IRP_CONTEXT IrpContext);
 989
 990 /* rw.c */
 991
 992 NTSTATUS
 993 VfatRead(
 994     PVFAT_IRP_CONTEXT IrpContext);
 995
 996 NTSTATUS
 997 VfatWrite(
 998     PVFAT_IRP_CONTEXT IrpContext);
 999
1000 NTSTATUS
1001 NextCluster(
1002     PDEVICE_EXTENSION DeviceExt,
1003     ULONG FirstCluster,
1004     PULONG CurrentCluster,
1005     BOOLEAN Extend);
1006
1007 /* shutdown.c */
1008
1009 DRIVER_DISPATCH
1010 VfatShutdown;
1011
1012 NTSTATUS
1013 NTAPI
1014 VfatShutdown(
1015     PDEVICE_OBJECT DeviceObject,
1016     PIRP Irp);
1017
1018 /* string.c */
1019
1020 VOID
1021 vfatSplitPathName(
1022     PUNICODE_STRING PathNameU,
1023     PUNICODE_STRING DirNameU,
1024     PUNICODE_STRING FileNameU);
1025
1026 BOOLEAN
1027 vfatIsLongIllegal(
1028     WCHAR c);
1029
1030 BOOLEAN
1031 wstrcmpjoki(
1032     PWSTR s1,
1033     PWSTR s2);
1034
1035 /* volume.c */
1036
1037 NTSTATUS
1038 VfatQueryVolumeInformation(
1039     PVFAT_IRP_CONTEXT IrpContext);
1040
1041 NTSTATUS
1042 VfatSetVolumeInformation(
1043     PVFAT_IRP_CONTEXT IrpContext);
1044
1045 #endif /* _FASTFAT_PCH_ */