#include <ntifs.h>
#include <ntdddisk.h>
-#include <reactos/helper.h>
#include <debug.h>
+#include <pseh/pseh2.h>
+
+#include "fullfat.h"
-/* FAT on-disk data structures */
#include <fat.h>
+#include <fatstruc.h>
+
+#define Add2Ptr(P,I,T) ((T)((PUCHAR)(P) + (I)))
+#define PtrOffset(B,O) ((ULONG)((ULONG_PTR)(O) - (ULONG_PTR)(B)))
+
+#define TAG_CCB 'BCCV'
+#define TAG_FCB 'BCFV'
+#define TAG_IRP 'PRIV'
+#define TAG_VFAT 'TAFV'
-/* File system types */
-#define FAT16 (1)
-#define FAT12 (2)
-#define FAT32 (3)
-#define FATX16 (4)
-#define FATX32 (5)
-
-/* VCB Flags */
-#define VCB_VOLUME_LOCKED 0x0001
-#define VCB_DISMOUNT_PENDING 0x0002
-#define VCB_IS_FATX 0x0004
-#define VCB_IS_DIRTY 0x4000 /* Volume is dirty */
-#define VCB_CLEAR_DIRTY 0x8000 /* Clean dirty flag at shutdown */
-
-typedef struct
-{
- ULONG VolumeID;
- ULONG FATStart;
- ULONG FATCount;
- ULONG FATSectors;
- ULONG rootDirectorySectors;
- ULONG rootStart;
- ULONG dataStart;
- ULONG RootCluster;
- ULONG SectorsPerCluster;
- ULONG BytesPerSector;
- ULONG BytesPerCluster;
- ULONG NumberOfClusters;
- ULONG FatType;
- ULONG Sectors;
- BOOLEAN FixedMedia;
-} FATINFO, *PFATINFO;
-
-struct _VFATFCB;
-struct _VFAT_DIRENTRY_CONTEXT;
-
-typedef struct DEVICE_EXTENSION *PDEVICE_EXTENSION;
-
-typedef struct _DEVICE_EXTENSION
-{
- ERESOURCE DirResource;
- ERESOURCE FatResource;
-
- KSPIN_LOCK FcbListLock;
- LIST_ENTRY FcbListHead;
- ULONG HashTableSize;
- struct _HASHENTRY** FcbHashTable;
-
- PDEVICE_OBJECT StorageDevice;
- PFILE_OBJECT FATFileObject;
- FATINFO FatInfo;
- ULONG LastAvailableCluster;
- ULONG AvailableClusters;
- BOOLEAN AvailableClustersValid;
- ULONG Flags;
- struct _VFATFCB * VolumeFcb;
-
- ULONG BaseDateYear;
-
- LIST_ENTRY VolumeListEntry;
-} DEVICE_EXTENSION;
-
-typedef struct _FAT_GLOBAL_DATA
-{
- ERESOURCE Resource;
- PDRIVER_OBJECT DriverObject;
- PDEVICE_OBJECT DiskDeviceObject;
- NPAGED_LOOKASIDE_LIST NonPagedFcbList;
- NPAGED_LOOKASIDE_LIST ResourceList;
- NPAGED_LOOKASIDE_LIST IrpContextList;
- FAST_IO_DISPATCH FastIoDispatch;
- CACHE_MANAGER_CALLBACKS CacheMgrCallbacks;
- CACHE_MANAGER_CALLBACKS CacheMgrNoopCallbacks;
-} FAT_GLOBAL_DATA, *VFAT_GLOBAL_DATA;
-
-extern FAT_GLOBAL_DATA FatGlobalData;
-
-/* FCB flags */
-#define FCB_CACHE_INITIALIZED 0x0001
-#define FCB_DELETE_PENDING 0x0002
-#define FCB_IS_FAT 0x0004
-#define FCB_IS_PAGE_FILE 0x0008
-#define FCB_IS_VOLUME 0x0010
-#define FCB_IS_DIRTY 0x0020
-#define FCB_IS_FATX_ENTRY 0x0040
-
-typedef struct _VFATFCB
-{
- /* FCB header required by ROS/NT */
- FSRTL_COMMON_FCB_HEADER RFCB;
- SECTION_OBJECT_POINTERS SectionObjectPointers;
- ERESOURCE MainResource;
- ERESOURCE PagingIoResource;
- /* end FCB header required by ROS/NT */
-
- /* Pointer to attributes in entry */
- PUCHAR Attributes;
-
- /* long file name, points into PathNameBuffer */
- UNICODE_STRING LongNameU;
-
- /* short file name */
- UNICODE_STRING ShortNameU;
-
- /* directory name, points into PathNameBuffer */
- UNICODE_STRING DirNameU;
-
- /* path + long file name 260 max*/
- UNICODE_STRING PathNameU;
-
- /* buffer for PathNameU */
- PWCHAR PathNameBuffer;
-
- /* buffer for ShortNameU */
- WCHAR ShortNameBuffer[13];
-
- /* */
- LONG RefCount;
-
- /* List of FCB's for this volume */
- LIST_ENTRY FcbListEntry;
-
- /* pointer to the parent fcb */
- struct _VFATFCB* parentFcb;
-
- /* Flags for the fcb */
- ULONG Flags;
-
- /* pointer to the file object which has initialized the fcb */
- PFILE_OBJECT FileObject;
-
- /* Directory index for the short name entry */
- ULONG dirIndex;
-
- /* Directory index where the long name starts */
- ULONG startIndex;
-
- /* Share access for the file object */
- SHARE_ACCESS FCBShareAccess;
-
- /* Incremented on IRP_MJ_CREATE, decremented on IRP_MJ_CLEANUP */
- ULONG OpenHandleCount;
-
- /* List of byte-range locks for this file */
- FILE_LOCK FileLock;
-
- /*
- * Optimalization: caching of last read/write cluster+offset pair. Can't
- * be in VFATCCB because it must be reset everytime the allocated clusters
- * change.
- */
- FAST_MUTEX LastMutex;
- ULONG LastCluster;
- ULONG LastOffset;
-} VFATFCB, *PVFATFCB;
-
-typedef struct _VFATCCB
-{
- LARGE_INTEGER CurrentByteOffset;
- /* for DirectoryControl */
- ULONG Entry;
- /* for DirectoryControl */
- UNICODE_STRING SearchPattern;
-} VFATCCB, *PVFATCCB;
-
-/* Volume Control Block */
-typedef struct _VCB
-{
- FSRTL_ADVANCED_FCB_HEADER VolumeFileHeader;
-} VCB, *PVCB;
-
-/* Volume Device Object */
-typedef struct _VOLUME_DEVICE_OBJECT
-{
- DEVICE_OBJECT DeviceObject;
- FSRTL_COMMON_FCB_HEADER VolumeHeader;
- VCB Vcb; /* Must be the last entry! */
-} VOLUME_DEVICE_OBJECT, *PVOLUME_DEVICE_OBJECT;
-
-
-#ifndef TAG
-#define TAG(A, B, C, D) (ULONG)(((A)<<0) + ((B)<<8) + ((C)<<16) + ((D)<<24))
-#endif
-
-#define TAG_CCB TAG('V', 'C', 'C', 'B')
-#define TAG_FCB TAG('V', 'F', 'C', 'B')
-#define TAG_IRP TAG('V', 'I', 'R', 'P')
-#define TAG_VFAT TAG('V', 'F', 'A', 'T')
-
-typedef struct __DOSTIME
-{
- USHORT Second:5;
- USHORT Minute:6;
- USHORT Hour:5;
-}
-DOSTIME, *PDOSTIME;
-typedef struct __DOSDATE
-{
- USHORT Day:5;
- USHORT Month:4;
- USHORT Year:5;
+/* Global resource acquire/release */
+#define FatAcquireExclusiveGlobal(IrpContext) \
+( \
+ ExAcquireResourceExclusiveLite(&FatGlobalData.Resource, \
+ (IrpContext)->Flags & IRPCONTEXT_CANWAIT) \
+)
+
+#define FatAcquireSharedGlobal(IrpContext) \
+( \
+ ExAcquireResourceSharedLite(&FatGlobalData.Resource, \
+ (IrpContext)->Flags & IRPCONTEXT_CANWAIT) \
+)
+
+#define FatReleaseGlobal(IrpContext) \
+{ \
+ ExReleaseResourceLite(&(FatGlobalData.Resource)); \
}
-DOSDATE, *PDOSDATE;
-
-#define IRPCONTEXT_CANWAIT 0x0001
-#define IRPCONTEXT_PENDINGRETURNED 0x0002
-#define IRPCONTEXT_STACK_IO_CONTEXT 0x0004
-
-typedef struct _FAT_IRP_CONTEXT
-{
- PIRP Irp;
- PDEVICE_OBJECT DeviceObject;
- UCHAR MajorFunction;
- UCHAR MinorFunction;
- PFILE_OBJECT FileObject;
- ULONG Flags;
- PVCB Vcb;
- ULONG PinCount;
- struct _FAT_IO_CONTEXT *FatIoContext;
-
- PDEVICE_EXTENSION DeviceExt;
- WORK_QUEUE_ITEM WorkQueueItem;
- PIO_STACK_LOCATION Stack;
- KEVENT Event;
-} FAT_IRP_CONTEXT, *PFAT_IRP_CONTEXT;
-
-typedef struct _FAT_IO_CONTEXT
-{
- PMDL ZeroMdl;
-} _FAT_IO_CONTEXT, *PFAT_IO_CONTEXT;
+
/* ------------------------------------------------------ shutdown.c */
FatSetVolumeInfo(PDEVICE_OBJECT DeviceObject, PIRP Irp);
/* ------------------------------------------------------ blockdev.c */
+NTSTATUS
+NTAPI
+FatPerformLboIo(
+ IN PFAT_IRP_CONTEXT IrpContext,
+ IN PLARGE_INTEGER Offset,
+ IN SIZE_T Length);
+
+NTSTATUS
+FatPerformVirtualNonCachedIo(
+ IN PFAT_IRP_CONTEXT IrpContext,
+ IN PFCB Fcb,
+ IN PLARGE_INTEGER Offset,
+ IN SIZE_T Length);
/* ----------------------------------------------------------- dir.c */
NTSTATUS NTAPI
FatDirectoryControl(PDEVICE_OBJECT DeviceObject, PIRP Irp);
+VOID NTAPI
+FatCreateRootDcb(IN PFAT_IRP_CONTEXT IrpContext,
+ IN PVCB Vcb);
+
+PFCB NTAPI
+FatCreateDcb(IN PFAT_IRP_CONTEXT IrpContext,
+ IN PVCB Vcb,
+ IN PFCB ParentDcb);
+
/* -------------------------------------------------------- create.c */
NTSTATUS NTAPI
FatCreate(PDEVICE_OBJECT DeviceObject, PIRP Irp);
+
/* --------------------------------------------------------- close.c */
NTSTATUS NTAPI
VOID NTAPI
FatDestroyIrpContext(PFAT_IRP_CONTEXT IrpContext);
+VOID
+NTAPI
+FatQueueRequest(IN PFAT_IRP_CONTEXT IrpContext,
+ IN PFAT_OPERATION_HANDLER OperationHandler);
+
VOID NTAPI
FatCompleteRequest(PFAT_IRP_CONTEXT IrpContext OPTIONAL,
PIRP Irp OPTIONAL,
NTSTATUS Status);
+BOOLEAN NTAPI
+FatAcquireExclusiveVcb(IN PFAT_IRP_CONTEXT IrpContext,
+ IN PVCB Vcb);
+
+VOID NTAPI
+FatReleaseVcb(IN PFAT_IRP_CONTEXT IrpContext,
+ IN PVCB Vcb);
+
+BOOLEAN NTAPI
+FatAcquireExclusiveFcb(IN PFAT_IRP_CONTEXT IrpContext,
+ IN PFCB Fcb);
+
+BOOLEAN NTAPI
+FatAcquireSharedFcb(IN PFAT_IRP_CONTEXT IrpContext,
+ IN PFCB Fcb);
+
+VOID NTAPI
+FatReleaseFcb(IN PFAT_IRP_CONTEXT IrpContext,
+ IN PFCB Fcb);
+
+TYPE_OF_OPEN
+NTAPI
+FatDecodeFileObject(IN PFILE_OBJECT FileObject,
+ OUT PVCB *Vcb,
+ OUT PFCB *FcbOrDcb,
+ OUT PCCB *Ccb);
+
+VOID NTAPI
+FatSetFileObject(PFILE_OBJECT FileObject,
+ TYPE_OF_OPEN TypeOfOpen,
+ PVOID Fcb,
+ PCCB Ccb);
+
+PVOID FASTCALL
+FatMapUserBuffer(PIRP Irp);
+
+/* --------------------------------------------------------- fullfat.c */
+
+FF_T_SINT32
+FatWriteBlocks(FF_T_UINT8 *pBuffer, FF_T_UINT32 SectorAddress, FF_T_UINT32 Count, void *pParam);
+
+FF_T_SINT32
+FatReadBlocks(FF_T_UINT8 *pBuffer, FF_T_UINT32 SectorAddress, FF_T_UINT32 Count, void *pParam);
/* --------------------------------------------------------- lock.c */
DriverEntry(PDRIVER_OBJECT DriverObject, PUNICODE_STRING RegistryPath);
/* ----------------------------------------------------------- fat.c */
+PVOID
+FatPinPage(
+ PFAT_PAGE_CONTEXT Context,
+ LONGLONG ByteOffset);
+
+PVOID
+FatPinNextPage(
+ PFAT_PAGE_CONTEXT Context);
+
+NTSTATUS
+FatInitializeVcb(
+ IN PFAT_IRP_CONTEXT IrpContext,
+ IN PVCB Vcb,
+ IN PDEVICE_OBJECT TargetDeviceObject,
+ IN PVPB Vpb);
+
+VOID
+FatUninitializeVcb(
+ IN PVCB Vcb);
+
+ULONG
+FatScanFat(
+ IN PFCB Fcb,
+ IN LONGLONG Vbo, OUT PLONGLONG Lbo,
+ IN OUT PLONGLONG Length,
+ OUT PULONG Index,
+ IN BOOLEAN CanWait);
/* ------------------------------------------------------ device.c */
NTSTATUS NTAPI
FatDeviceControl(PDEVICE_OBJECT DeviceObject, PIRP Irp);
+NTSTATUS
+FatPerformDevIoCtrl(PDEVICE_OBJECT DeviceObject,
+ ULONG ControlCode,
+ PVOID InputBuffer,
+ ULONG InputBufferSize,
+ PVOID OutputBuffer,
+ ULONG OutputBufferSize,
+ BOOLEAN Override);
+
/* ------------------------------------------------------ direntry.c */
+VOID
+FatFindDirent(IN OUT PFAT_FIND_DIRENT_CONTEXT Context,
+ OUT PDIR_ENTRY* Dirent,
+ OUT PUNICODE_STRING LongFileName OPTIONAL);
+
+VOID
+FatEnumerateDirents(IN OUT PFAT_ENUM_DIRENT_CONTEXT Context,
+ IN SIZE_T Offset);
+
+VOID
+FatQueryFileTimes(OUT PLARGE_INTEGER FileTimes,
+ IN PDIR_ENTRY Dirent);
/* ----------------------------------------------------------- fcb.c */
+PFCB
+FatLookupFcbByName(
+ IN PFCB ParentFcb,
+ IN PUNICODE_STRING Name);
+
+BOOLEAN
+FatLinkFcbNames(
+ IN PFCB ParentFcb,
+ IN PFCB Fcb);
+
+VOID
+FatUnlinkFcbNames(
+ IN PFCB ParentFcb,
+ IN PFCB Fcb);
+
+PFCB NTAPI
+FatCreateFcb(
+ IN PFAT_IRP_CONTEXT IrpContext,
+ IN PVCB Vcb,
+ IN PFCB ParentDcb,
+ IN FF_FILE *FileHandle);
+
+NTSTATUS
+FatOpenFcb(
+ OUT PFCB* Fcb,
+ IN PFAT_IRP_CONTEXT IrpContext,
+ IN PFCB ParentFcb,
+ IN PUNICODE_STRING FileName);
+
+PFCB NTAPI
+FatFindFcb(PFAT_IRP_CONTEXT IrpContext,
+ PRTL_SPLAY_LINKS *RootNode,
+ PSTRING AnsiName,
+ PBOOLEAN IsDosName);
+
+PCCB NTAPI
+FatCreateCcb();
+
+VOID NTAPI
+FatSetFullNameInFcb(PFCB Fcb,
+ PUNICODE_STRING Name);
+
+VOID NTAPI
+FatSetFcbNames(IN PFAT_IRP_CONTEXT IrpContext,
+ IN PFCB Fcb);
+
+VOID NTAPI
+Fati8dot3ToString(IN PCHAR FileName,
+ IN BOOLEAN DownCase,
+ OUT POEM_STRING OutString);
/* ------------------------------------------------------------ rw.c */
projects / reactos.git / blobdiff