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vfat.h
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00001 /* $Id: vfat.h 16656 2005-07-20 02:52:52Z ion $ */ 00002 00003 #include <ddk/ntifs.h> 00004 #include <ddk/ntdddisk.h> 00005 #include <ndk/ntndk.h> 00006 #include <limits.h> 00007 #include <debug.h> 00008 00009 #define USE_ROS_CC_AND_FS 00010 00011 #include <pshpack1.h> 00012 struct _BootSector 00013 { 00014 unsigned char magic0, res0, magic1; 00015 unsigned char OEMName[8]; 00016 unsigned short BytesPerSector; 00017 unsigned char SectorsPerCluster; 00018 unsigned short ReservedSectors; 00019 unsigned char FATCount; 00020 unsigned short RootEntries, Sectors; 00021 unsigned char Media; 00022 unsigned short FATSectors, SectorsPerTrack, Heads; 00023 unsigned long HiddenSectors, SectorsHuge; 00024 unsigned char Drive, Res1, Sig; 00025 unsigned long VolumeID; 00026 unsigned char VolumeLabel[11], SysType[8]; 00027 unsigned char Res2[448]; 00028 unsigned short Signatur1; 00029 }; 00030 00031 struct _BootSector32 00032 { 00033 unsigned char magic0, res0, magic1; // 0 00034 unsigned char OEMName[8]; // 3 00035 unsigned short BytesPerSector; // 11 00036 unsigned char SectorsPerCluster; // 13 00037 unsigned short ReservedSectors; // 14 00038 unsigned char FATCount; // 16 00039 unsigned short RootEntries, Sectors; // 17 00040 unsigned char Media; // 21 00041 unsigned short FATSectors, SectorsPerTrack, Heads; // 22 00042 unsigned long HiddenSectors, SectorsHuge; // 28 00043 unsigned long FATSectors32; // 36 00044 unsigned short ExtFlag; // 40 00045 unsigned short FSVersion; // 42 00046 unsigned long RootCluster; // 44 00047 unsigned short FSInfoSector; // 48 00048 unsigned short BootBackup; // 50 00049 unsigned char Res3[12]; // 52 00050 unsigned char Drive; // 64 00051 unsigned char Res4; // 65 00052 unsigned char ExtBootSignature; // 66 00053 unsigned long VolumeID; // 67 00054 unsigned char VolumeLabel[11], SysType[8]; // 71 00055 unsigned char Res2[420]; // 90 00056 unsigned short Signature1; // 510 00057 }; 00058 00059 struct _BootSectorFatX 00060 { 00061 unsigned char SysType[4]; // 0 00062 unsigned long VolumeID; // 4 00063 unsigned long SectorsPerCluster; // 8 00064 unsigned short FATCount; // 12 00065 unsigned long Unknown; // 14 00066 unsigned char Unused[4078]; // 18 00067 }; 00068 00069 struct _FsInfoSector 00070 { 00071 unsigned long ExtBootSignature2; // 0 00072 unsigned char Res6[480]; // 4 00073 unsigned long FSINFOSignature; // 484 00074 unsigned long FreeCluster; // 488 00075 unsigned long NextCluster; // 492 00076 unsigned char Res7[12]; // 496 00077 unsigned long Signatur2; // 508 00078 }; 00079 00080 typedef struct _BootSector BootSector; 00081 00082 struct _FATDirEntry 00083 { 00084 union 00085 { 00086 struct { unsigned char Filename[8], Ext[3]; }; 00087 unsigned char ShortName[11]; 00088 }; 00089 unsigned char Attrib; 00090 unsigned char lCase; 00091 unsigned char CreationTimeMs; 00092 unsigned short CreationTime,CreationDate,AccessDate; 00093 unsigned short FirstClusterHigh; // higher 00094 unsigned short UpdateTime; //time create/update 00095 unsigned short UpdateDate; //date create/update 00096 unsigned short FirstCluster; 00097 unsigned long FileSize; 00098 }; 00099 00100 typedef struct _FATDirEntry FAT_DIR_ENTRY, *PFAT_DIR_ENTRY; 00101 00102 struct _FATXDirEntry 00103 { 00104 unsigned char FilenameLength; // 0 00105 unsigned char Attrib; // 1 00106 unsigned char Filename[42]; // 2 00107 unsigned long FirstCluster; // 44 00108 unsigned long FileSize; // 48 00109 unsigned short UpdateTime; // 52 00110 unsigned short UpdateDate; // 54 00111 unsigned short CreationTime; // 56 00112 unsigned short CreationDate; // 58 00113 unsigned short AccessTime; // 60 00114 unsigned short AccessDate; // 62 00115 }; 00116 00117 struct _slot 00118 { 00119 unsigned char id; // sequence number for slot 00120 WCHAR name0_4[5]; // first 5 characters in name 00121 unsigned char attr; // attribute byte 00122 unsigned char reserved; // always 0 00123 unsigned char alias_checksum; // checksum for 8.3 alias 00124 WCHAR name5_10[6]; // 6 more characters in name 00125 unsigned char start[2]; // starting cluster number 00126 WCHAR name11_12[2]; // last 2 characters in name 00127 }; 00128 00129 typedef struct _slot slot; 00130 00131 #include <poppack.h> 00132 00133 #define VFAT_CASE_LOWER_BASE 8 // base is lower case 00134 #define VFAT_CASE_LOWER_EXT 16 // extension is lower case 00135 00136 #define LONGNAME_MAX_LENGTH 256 // max length for a long filename 00137 00138 #define ENTRY_DELETED(DeviceExt, DirEntry) ((DeviceExt)->Flags & VCB_IS_FATX ? FATX_ENTRY_DELETED(&((DirEntry)->FatX)) : FAT_ENTRY_DELETED(&((DirEntry)->Fat))) 00139 #define ENTRY_VOLUME(DeviceExt, DirEntry) ((DeviceExt)->Flags & VCB_IS_FATX ? FATX_ENTRY_VOLUME(&((DirEntry)->FatX)) : FAT_ENTRY_VOLUME(&((DirEntry)->Fat))) 00140 #define ENTRY_END(DeviceExt, DirEntry) ((DeviceExt)->Flags & VCB_IS_FATX ? FATX_ENTRY_END(&((DirEntry)->FatX)) : FAT_ENTRY_END(&((DirEntry)->Fat))) 00141 00142 #define FAT_ENTRY_DELETED(DirEntry) ((DirEntry)->Filename[0] == 0xe5) 00143 #define FAT_ENTRY_END(DirEntry) ((DirEntry)->Filename[0] == 0) 00144 #define FAT_ENTRY_LONG(DirEntry) (((DirEntry)->Attrib & 0x3f) == 0x0f) 00145 #define FAT_ENTRY_VOLUME(DirEntry) (((DirEntry)->Attrib & 0x1f) == 0x08) 00146 00147 #define FATX_ENTRY_DELETED(DirEntry) ((DirEntry)->FilenameLength == 0xe5) 00148 #define FATX_ENTRY_END(DirEntry) ((DirEntry)->FilenameLength == 0xff) 00149 #define FATX_ENTRY_LONG(DirEntry) (FALSE) 00150 #define FATX_ENTRY_VOLUME(DirEntry) (((DirEntry)->Attrib & 0x1f) == 0x08) 00151 00152 #define FAT_ENTRIES_PER_PAGE (PAGE_SIZE / sizeof (FAT_DIR_ENTRY)) 00153 #define FATX_ENTRIES_PER_PAGE (PAGE_SIZE / sizeof (FATX_DIR_ENTRY)) 00154 00155 typedef struct _FATXDirEntry FATX_DIR_ENTRY, *PFATX_DIR_ENTRY; 00156 00157 union _DIR_ENTRY 00158 { 00159 FAT_DIR_ENTRY Fat; 00160 FATX_DIR_ENTRY FatX; 00161 }; 00162 00163 typedef union _DIR_ENTRY DIR_ENTRY, *PDIR_ENTRY; 00164 00165 #define BLOCKSIZE 512 00166 00167 #define FAT16 (1) 00168 #define FAT12 (2) 00169 #define FAT32 (3) 00170 #define FATX16 (4) 00171 #define FATX32 (5) 00172 00173 #define VCB_VOLUME_LOCKED 0x0001 00174 #define VCB_DISMOUNT_PENDING 0x0002 00175 #define VCB_IS_FATX 0x0004 00176 #define VCB_IS_DIRTY 0x4000 /* Volume is dirty */ 00177 #define VCB_CLEAR_DIRTY 0x8000 /* Clean dirty flag at shutdown */ 00178 00179 typedef struct 00180 { 00181 ULONG VolumeID; 00182 ULONG FATStart; 00183 ULONG FATCount; 00184 ULONG FATSectors; 00185 ULONG rootDirectorySectors; 00186 ULONG rootStart; 00187 ULONG dataStart; 00188 ULONG RootCluster; 00189 ULONG SectorsPerCluster; 00190 ULONG BytesPerSector; 00191 ULONG BytesPerCluster; 00192 ULONG NumberOfClusters; 00193 ULONG FatType; 00194 ULONG Sectors; 00195 BOOLEAN FixedMedia; 00196 } FATINFO, *PFATINFO; 00197 00198 struct _VFATFCB; 00199 struct _VFAT_DIRENTRY_CONTEXT; 00200 00201 typedef struct _HASHENTRY 00202 { 00203 ULONG Hash; 00204 struct _VFATFCB* self; 00205 struct _HASHENTRY* next; 00206 } 00207 HASHENTRY; 00208 00209 #define FCB_HASH_TABLE_SIZE 65536 00210 00211 typedef struct DEVICE_EXTENSION *PDEVICE_EXTENSION; 00212 00213 typedef NTSTATUS (*PGET_NEXT_CLUSTER)(PDEVICE_EXTENSION,ULONG,PULONG); 00214 typedef NTSTATUS (*PFIND_AND_MARK_AVAILABLE_CLUSTER)(PDEVICE_EXTENSION,PULONG); 00215 typedef NTSTATUS (*PWRITE_CLUSTER)(PDEVICE_EXTENSION,ULONG,ULONG,PULONG); 00216 00217 typedef NTSTATUS (*PGET_NEXT_DIR_ENTRY)(PVOID*,PVOID*,struct _VFATFCB*,struct _VFAT_DIRENTRY_CONTEXT*,BOOLEAN); 00218 00219 typedef struct DEVICE_EXTENSION 00220 { 00221 ERESOURCE DirResource; 00222 ERESOURCE FatResource; 00223 00224 KSPIN_LOCK FcbListLock; 00225 LIST_ENTRY FcbListHead; 00226 ULONG HashTableSize; 00227 struct _HASHENTRY** FcbHashTable; 00228 00229 PDEVICE_OBJECT StorageDevice; 00230 PFILE_OBJECT FATFileObject; 00231 FATINFO FatInfo; 00232 ULONG LastAvailableCluster; 00233 ULONG AvailableClusters; 00234 BOOLEAN AvailableClustersValid; 00235 ULONG Flags; 00236 struct _VFATFCB * VolumeFcb; 00237 00238 /* Pointers to functions for manipulating FAT. */ 00239 PGET_NEXT_CLUSTER GetNextCluster; 00240 PFIND_AND_MARK_AVAILABLE_CLUSTER FindAndMarkAvailableCluster; 00241 PWRITE_CLUSTER WriteCluster; 00242 ULONG CleanShutBitMask; 00243 00244 /* Pointers to functions for manipulating directory entries. */ 00245 PGET_NEXT_DIR_ENTRY GetNextDirEntry; 00246 00247 ULONG BaseDateYear; 00248 00249 LIST_ENTRY VolumeListEntry; 00250 } DEVICE_EXTENSION, VCB, *PVCB; 00251 00252 typedef struct 00253 { 00254 PDRIVER_OBJECT DriverObject; 00255 PDEVICE_OBJECT DeviceObject; 00256 ULONG Flags; 00257 ERESOURCE VolumeListLock; 00258 LIST_ENTRY VolumeListHead; 00259 NPAGED_LOOKASIDE_LIST FcbLookasideList; 00260 NPAGED_LOOKASIDE_LIST CcbLookasideList; 00261 NPAGED_LOOKASIDE_LIST IrpContextLookasideList; 00262 FAST_IO_DISPATCH FastIoDispatch; 00263 CACHE_MANAGER_CALLBACKS CacheMgrCallbacks; 00264 } VFAT_GLOBAL_DATA, *PVFAT_GLOBAL_DATA; 00265 00266 extern PVFAT_GLOBAL_DATA VfatGlobalData; 00267 00268 #define FCB_CACHE_INITIALIZED 0x0001 00269 #define FCB_DELETE_PENDING 0x0002 00270 #define FCB_IS_FAT 0x0004 00271 #define FCB_IS_PAGE_FILE 0x0008 00272 #define FCB_IS_VOLUME 0x0010 00273 #define FCB_IS_DIRTY 0x0020 00274 #define FCB_IS_FATX_ENTRY 0x0040 00275 00276 typedef struct _VFATFCB 00277 { 00278 /* FCB header required by ROS/NT */ 00279 FSRTL_COMMON_FCB_HEADER RFCB; 00280 SECTION_OBJECT_POINTERS SectionObjectPointers; 00281 ERESOURCE MainResource; 00282 ERESOURCE PagingIoResource; 00283 /* end FCB header required by ROS/NT */ 00284 00285 /* directory entry for this file or directory */ 00286 DIR_ENTRY entry; 00287 00288 /* Pointer to attributes in entry */ 00289 PUCHAR Attributes; 00290 00291 /* long file name, points into PathNameBuffer */ 00292 UNICODE_STRING LongNameU; 00293 00294 /* short file name */ 00295 UNICODE_STRING ShortNameU; 00296 00297 /* directory name, points into PathNameBuffer */ 00298 UNICODE_STRING DirNameU; 00299 00300 /* path + long file name 260 max*/ 00301 UNICODE_STRING PathNameU; 00302 00303 /* buffer for PathNameU */ 00304 PWCHAR PathNameBuffer; 00305 00306 /* buffer for ShortNameU */ 00307 WCHAR ShortNameBuffer[13]; 00308 00309 /* */ 00310 LONG RefCount; 00311 00312 /* List of FCB's for this volume */ 00313 LIST_ENTRY FcbListEntry; 00314 00315 /* pointer to the parent fcb */ 00316 struct _VFATFCB* parentFcb; 00317 00318 /* Flags for the fcb */ 00319 ULONG Flags; 00320 00321 /* pointer to the file object which has initialized the fcb */ 00322 PFILE_OBJECT FileObject; 00323 00324 /* Directory index for the short name entry */ 00325 ULONG dirIndex; 00326 00327 /* Directory index where the long name starts */ 00328 ULONG startIndex; 00329 00330 /* Share access for the file object */ 00331 SHARE_ACCESS FCBShareAccess; 00332 00333 /* Incremented on IRP_MJ_CREATE, decremented on IRP_MJ_CLEANUP */ 00334 ULONG OpenHandleCount; 00335 00336 /* Entry into the hash table for the path + long name */ 00337 HASHENTRY Hash; 00338 00339 /* Entry into the hash table for the path + short name */ 00340 HASHENTRY ShortHash; 00341 00342 /* List of byte-range locks for this file */ 00343 FILE_LOCK FileLock; 00344 00345 /* 00346 * Optimalization: caching of last read/write cluster+offset pair. Can't 00347 * be in VFATCCB because it must be reset everytime the allocated clusters 00348 * change. 00349 */ 00350 FAST_MUTEX LastMutex; 00351 ULONG LastCluster; 00352 ULONG LastOffset; 00353 } VFATFCB, *PVFATFCB; 00354 00355 typedef struct _VFATCCB 00356 { 00357 LARGE_INTEGER CurrentByteOffset; 00358 /* for DirectoryControl */ 00359 ULONG Entry; 00360 /* for DirectoryControl */ 00361 UNICODE_STRING SearchPattern; 00362 } VFATCCB, *PVFATCCB; 00363 00364 #define TAG_CCB 'BCCV' 00365 #define TAG_FCB 'BCFV' 00366 #define TAG_IRP 'PRIV' 00367 00368 #define ENTRIES_PER_SECTOR (BLOCKSIZE / sizeof(FATDirEntry)) 00369 00370 typedef struct __DOSTIME 00371 { 00372 USHORT Second:5; 00373 USHORT Minute:6; 00374 USHORT Hour:5; 00375 } 00376 DOSTIME, *PDOSTIME; 00377 00378 typedef struct __DOSDATE 00379 { 00380 USHORT Day:5; 00381 USHORT Month:4; 00382 USHORT Year:5; 00383 } 00384 DOSDATE, *PDOSDATE; 00385 00386 #define IRPCONTEXT_CANWAIT 0x0001 00387 #define IRPCONTEXT_PENDINGRETURNED 0x0002 00388 00389 typedef struct 00390 { 00391 PIRP Irp; 00392 PDEVICE_OBJECT DeviceObject; 00393 PDEVICE_EXTENSION DeviceExt; 00394 ULONG Flags; 00395 WORK_QUEUE_ITEM WorkQueueItem; 00396 PIO_STACK_LOCATION Stack; 00397 UCHAR MajorFunction; 00398 UCHAR MinorFunction; 00399 PFILE_OBJECT FileObject; 00400 ULONG RefCount; 00401 KEVENT Event; 00402 } VFAT_IRP_CONTEXT, *PVFAT_IRP_CONTEXT; 00403 00404 typedef struct _VFAT_DIRENTRY_CONTEXT 00405 { 00406 ULONG StartIndex; 00407 ULONG DirIndex; 00408 DIR_ENTRY DirEntry; 00409 UNICODE_STRING LongNameU; 00410 UNICODE_STRING ShortNameU; 00411 } VFAT_DIRENTRY_CONTEXT, *PVFAT_DIRENTRY_CONTEXT; 00412 00413 00414 /* ------------------------------------------------------ shutdown.c */ 00415 00416 NTSTATUS NTAPI VfatShutdown (PDEVICE_OBJECT DeviceObject, 00417 PIRP Irp); 00418 00419 /* -------------------------------------------------------- volume.c */ 00420 00421 NTSTATUS VfatQueryVolumeInformation (PVFAT_IRP_CONTEXT IrpContext); 00422 00423 NTSTATUS VfatSetVolumeInformation (PVFAT_IRP_CONTEXT IrpContext); 00424 00425 /* ------------------------------------------------------ blockdev.c */ 00426 00427 NTSTATUS VfatReadDisk(IN PDEVICE_OBJECT pDeviceObject, 00428 IN PLARGE_INTEGER ReadOffset, 00429 IN ULONG ReadLength, 00430 IN PUCHAR Buffer, 00431 IN BOOLEAN Override); 00432 00433 NTSTATUS VfatReadDiskPartial (IN PVFAT_IRP_CONTEXT IrpContext, 00434 IN PLARGE_INTEGER ReadOffset, 00435 IN ULONG ReadLength, 00436 IN ULONG BufferOffset, 00437 IN BOOLEAN Wait); 00438 00439 NTSTATUS VfatWriteDiskPartial(IN PVFAT_IRP_CONTEXT IrpContext, 00440 IN PLARGE_INTEGER WriteOffset, 00441 IN ULONG WriteLength, 00442 IN ULONG BufferOffset, 00443 IN BOOLEAN Wait); 00444 00445 NTSTATUS VfatBlockDeviceIoControl (IN PDEVICE_OBJECT DeviceObject, 00446 IN ULONG CtlCode, 00447 IN PVOID InputBuffer, 00448 IN ULONG InputBufferSize, 00449 IN OUT PVOID OutputBuffer, 00450 IN OUT PULONG pOutputBufferSize, 00451 IN BOOLEAN Override); 00452 00453 /* ----------------------------------------------------------- dir.c */ 00454 00455 NTSTATUS VfatDirectoryControl (PVFAT_IRP_CONTEXT); 00456 00457 BOOLEAN FsdDosDateTimeToSystemTime (PDEVICE_EXTENSION DeviceExt, 00458 USHORT DosDate, 00459 USHORT DosTime, 00460 PLARGE_INTEGER SystemTime); 00461 00462 BOOLEAN FsdSystemTimeToDosDateTime (PDEVICE_EXTENSION DeviceExt, 00463 PLARGE_INTEGER SystemTime, 00464 USHORT *pDosDate, 00465 USHORT *pDosTime); 00466 00467 /* -------------------------------------------------------- create.c */ 00468 00469 NTSTATUS VfatCreate (PVFAT_IRP_CONTEXT IrpContext); 00470 00471 NTSTATUS VfatOpenFile (PDEVICE_EXTENSION DeviceExt, 00472 PFILE_OBJECT FileObject, 00473 PVFATFCB* parentFcb); 00474 00475 NTSTATUS FindFile (PDEVICE_EXTENSION DeviceExt, 00476 PVFATFCB Parent, 00477 PUNICODE_STRING FileToFindU, 00478 PVFAT_DIRENTRY_CONTEXT DirContext, 00479 BOOLEAN First); 00480 00481 VOID vfat8Dot3ToString (PFAT_DIR_ENTRY pEntry, 00482 PUNICODE_STRING NameU); 00483 00484 NTSTATUS ReadVolumeLabel(PDEVICE_EXTENSION DeviceExt, 00485 PVPB Vpb); 00486 00487 /* --------------------------------------------------------- close.c */ 00488 00489 NTSTATUS VfatClose (PVFAT_IRP_CONTEXT IrpContext); 00490 00491 NTSTATUS VfatCloseFile(PDEVICE_EXTENSION DeviceExt, 00492 PFILE_OBJECT FileObject); 00493 00494 /* ------------------------------------------------------- cleanup.c */ 00495 00496 NTSTATUS VfatCleanup (PVFAT_IRP_CONTEXT IrpContext); 00497 00498 /* --------------------------------------------------------- fastio.c */ 00499 00500 VOID 00501 VfatInitFastIoRoutines(PFAST_IO_DISPATCH FastIoDispatch); 00502 00503 BOOLEAN NTAPI 00504 VfatAcquireForLazyWrite(IN PVOID Context, 00505 IN BOOLEAN Wait); 00506 00507 VOID NTAPI 00508 VfatReleaseFromLazyWrite(IN PVOID Context); 00509 00510 BOOLEAN NTAPI 00511 VfatAcquireForReadAhead(IN PVOID Context, 00512 IN BOOLEAN Wait); 00513 00514 VOID NTAPI 00515 VfatReleaseFromReadAhead(IN PVOID Context); 00516 00517 /* --------------------------------------------------------- fsctl.c */ 00518 00519 NTSTATUS VfatFileSystemControl (PVFAT_IRP_CONTEXT IrpContext); 00520 00521 /* --------------------------------------------------------- finfo.c */ 00522 00523 NTSTATUS VfatQueryInformation (PVFAT_IRP_CONTEXT IrpContext); 00524 00525 NTSTATUS VfatSetInformation (PVFAT_IRP_CONTEXT IrpContext); 00526 00527 NTSTATUS 00528 VfatSetAllocationSizeInformation(PFILE_OBJECT FileObject, 00529 PVFATFCB Fcb, 00530 PDEVICE_EXTENSION DeviceExt, 00531 PLARGE_INTEGER AllocationSize); 00532 00533 /* --------------------------------------------------------- iface.c */ 00534 00535 NTSTATUS NTAPI DriverEntry (PDRIVER_OBJECT DriverObject, 00536 PUNICODE_STRING RegistryPath); 00537 00538 /* --------------------------------------------------------- dirwr.c */ 00539 00540 NTSTATUS VfatAddEntry (PDEVICE_EXTENSION DeviceExt, 00541 PUNICODE_STRING PathNameU, 00542 PVFATFCB* Fcb, 00543 PVFATFCB ParentFcb, 00544 ULONG RequestedOptions, 00545 UCHAR ReqAttr); 00546 00547 NTSTATUS VfatUpdateEntry (PVFATFCB pFcb); 00548 00549 NTSTATUS VfatDelEntry(PDEVICE_EXTENSION, PVFATFCB); 00550 00551 BOOLEAN 00552 vfatFindDirSpace(PDEVICE_EXTENSION DeviceExt, 00553 PVFATFCB pDirFcb, 00554 ULONG nbSlots, 00555 PULONG start); 00556 00557 /* -------------------------------------------------------- string.c */ 00558 00559 VOID 00560 vfatSplitPathName(PUNICODE_STRING PathNameU, 00561 PUNICODE_STRING DirNameU, 00562 PUNICODE_STRING FileNameU); 00563 00564 BOOLEAN vfatIsLongIllegal(WCHAR c); 00565 00566 BOOLEAN wstrcmpjoki (PWSTR s1, 00567 PWSTR s2); 00568 00569 /* ----------------------------------------------------------- fat.c */ 00570 00571 NTSTATUS FAT12GetNextCluster(PDEVICE_EXTENSION DeviceExt, 00572 ULONG CurrentCluster, 00573 PULONG NextCluster); 00574 00575 NTSTATUS FAT12FindAndMarkAvailableCluster(PDEVICE_EXTENSION DeviceExt, 00576 PULONG Cluster); 00577 00578 NTSTATUS FAT12WriteCluster(PDEVICE_EXTENSION DeviceExt, 00579 ULONG ClusterToWrite, 00580 ULONG NewValue, 00581 PULONG OldValue); 00582 00583 NTSTATUS FAT16GetNextCluster(PDEVICE_EXTENSION DeviceExt, 00584 ULONG CurrentCluster, 00585 PULONG NextCluster); 00586 00587 NTSTATUS FAT16FindAndMarkAvailableCluster(PDEVICE_EXTENSION DeviceExt, 00588 PULONG Cluster); 00589 00590 NTSTATUS FAT16WriteCluster(PDEVICE_EXTENSION DeviceExt, 00591 ULONG ClusterToWrite, 00592 ULONG NewValue, 00593 PULONG OldValue); 00594 00595 NTSTATUS FAT32GetNextCluster(PDEVICE_EXTENSION DeviceExt, 00596 ULONG CurrentCluster, 00597 PULONG NextCluster); 00598 00599 NTSTATUS FAT32FindAndMarkAvailableCluster(PDEVICE_EXTENSION DeviceExt, 00600 PULONG Cluster); 00601 00602 NTSTATUS FAT32WriteCluster(PDEVICE_EXTENSION DeviceExt, 00603 ULONG ClusterToWrite, 00604 ULONG NewValue, 00605 PULONG OldValue); 00606 00607 NTSTATUS OffsetToCluster (PDEVICE_EXTENSION DeviceExt, 00608 ULONG FirstCluster, 00609 ULONG FileOffset, 00610 PULONG Cluster, 00611 BOOLEAN Extend); 00612 00613 ULONGLONG ClusterToSector (PDEVICE_EXTENSION DeviceExt, 00614 ULONG Cluster); 00615 00616 NTSTATUS GetNextCluster (PDEVICE_EXTENSION DeviceExt, 00617 ULONG CurrentCluster, 00618 PULONG NextCluster); 00619 00620 NTSTATUS GetNextClusterExtend (PDEVICE_EXTENSION DeviceExt, 00621 ULONG CurrentCluster, 00622 PULONG NextCluster); 00623 00624 NTSTATUS CountAvailableClusters (PDEVICE_EXTENSION DeviceExt, 00625 PLARGE_INTEGER Clusters); 00626 00627 NTSTATUS 00628 WriteCluster(PDEVICE_EXTENSION DeviceExt, 00629 ULONG ClusterToWrite, 00630 ULONG NewValue); 00631 00632 /* ------------------------------------------------------ direntry.c */ 00633 00634 ULONG vfatDirEntryGetFirstCluster (PDEVICE_EXTENSION pDeviceExt, 00635 PDIR_ENTRY pDirEntry); 00636 00637 BOOLEAN VfatIsDirectoryEmpty(PVFATFCB Fcb); 00638 00639 NTSTATUS FATGetNextDirEntry(PVOID * pContext, 00640 PVOID * pPage, 00641 IN PVFATFCB pDirFcb, 00642 IN PVFAT_DIRENTRY_CONTEXT DirContext, 00643 BOOLEAN First); 00644 00645 NTSTATUS FATXGetNextDirEntry(PVOID * pContext, 00646 PVOID * pPage, 00647 IN PVFATFCB pDirFcb, 00648 IN PVFAT_DIRENTRY_CONTEXT DirContext, 00649 BOOLEAN First); 00650 00651 /* ----------------------------------------------------------- fcb.c */ 00652 00653 PVFATFCB vfatNewFCB (PDEVICE_EXTENSION pVCB, 00654 PUNICODE_STRING pFileNameU); 00655 00656 VOID vfatDestroyFCB (PVFATFCB pFCB); 00657 00658 VOID vfatDestroyCCB(PVFATCCB pCcb); 00659 00660 VOID vfatGrabFCB (PDEVICE_EXTENSION pVCB, 00661 PVFATFCB pFCB); 00662 00663 VOID vfatReleaseFCB (PDEVICE_EXTENSION pVCB, 00664 PVFATFCB pFCB); 00665 00666 VOID vfatAddFCBToTable (PDEVICE_EXTENSION pVCB, 00667 PVFATFCB pFCB); 00668 00669 PVFATFCB vfatGrabFCBFromTable (PDEVICE_EXTENSION pDeviceExt, 00670 PUNICODE_STRING pFileNameU); 00671 00672 PVFATFCB vfatMakeRootFCB (PDEVICE_EXTENSION pVCB); 00673 00674 PVFATFCB vfatOpenRootFCB (PDEVICE_EXTENSION pVCB); 00675 00676 BOOLEAN vfatFCBIsDirectory (PVFATFCB FCB); 00677 00678 BOOLEAN vfatFCBIsRoot(PVFATFCB FCB); 00679 00680 NTSTATUS vfatAttachFCBToFileObject (PDEVICE_EXTENSION vcb, 00681 PVFATFCB fcb, 00682 PFILE_OBJECT fileObject); 00683 00684 NTSTATUS vfatDirFindFile (PDEVICE_EXTENSION pVCB, 00685 PVFATFCB parentFCB, 00686 PUNICODE_STRING FileToFindU, 00687 PVFATFCB * fileFCB); 00688 00689 NTSTATUS vfatGetFCBForFile (PDEVICE_EXTENSION pVCB, 00690 PVFATFCB *pParentFCB, 00691 PVFATFCB *pFCB, 00692 PUNICODE_STRING pFileNameU); 00693 00694 NTSTATUS vfatMakeFCBFromDirEntry (PVCB vcb, 00695 PVFATFCB directoryFCB, 00696 PVFAT_DIRENTRY_CONTEXT DirContext, 00697 PVFATFCB * fileFCB); 00698 00699 /* ------------------------------------------------------------ rw.c */ 00700 00701 NTSTATUS VfatRead (PVFAT_IRP_CONTEXT IrpContext); 00702 00703 NTSTATUS VfatWrite (PVFAT_IRP_CONTEXT IrpContext); 00704 00705 NTSTATUS NextCluster(PDEVICE_EXTENSION DeviceExt, 00706 ULONG FirstCluster, 00707 PULONG CurrentCluster, 00708 BOOLEAN Extend); 00709 00710 /* ----------------------------------------------------------- misc.c */ 00711 00712 NTSTATUS VfatQueueRequest(PVFAT_IRP_CONTEXT IrpContext); 00713 00714 PVFAT_IRP_CONTEXT VfatAllocateIrpContext(PDEVICE_OBJECT DeviceObject, 00715 PIRP Irp); 00716 00717 VOID VfatFreeIrpContext(PVFAT_IRP_CONTEXT IrpContext); 00718 00719 NTSTATUS NTAPI VfatBuildRequest (PDEVICE_OBJECT DeviceObject, 00720 PIRP Irp); 00721 00722 PVOID VfatGetUserBuffer(IN PIRP); 00723 00724 NTSTATUS VfatLockUserBuffer(IN PIRP, IN ULONG, 00725 IN LOCK_OPERATION); 00726 00727 NTSTATUS 00728 VfatSetExtendedAttributes(PFILE_OBJECT FileObject, 00729 PVOID Ea, 00730 ULONG EaLength); 00731 /* ------------------------------------------------------------- flush.c */ 00732 00733 NTSTATUS VfatFlush(PVFAT_IRP_CONTEXT IrpContext); 00734 00735 NTSTATUS VfatFlushVolume(PDEVICE_EXTENSION DeviceExt, PVFATFCB VolumeFcb); 00736 00737 00738 /* EOF */
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