mirror of
https://github.com/reactos/reactos.git
synced 2024-07-13 16:15:05 +00:00
Added file and directory caching.
Improved verify support. Fixed a joliet filename bug. svn path=/trunk/; revision=2945
This commit is contained in:
Eric Kohl
parent
e37bad87b8
commit
5e4527aff7
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@ -144,6 +144,7 @@ typedef struct
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KSPIN_LOCK FcbListLock;
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LIST_ENTRY FcbListHead;
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PVPB Vpb;
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PDEVICE_OBJECT StorageDevice;
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PFILE_OBJECT StreamFileObject;
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@ -154,6 +155,8 @@ typedef struct
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#define FCB_CACHE_INITIALIZED 0x0001
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#define FCB_IS_VOLUME_STREAM 0x0002
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#define FCB_IS_VOLUME 0x0004
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typedef struct _FCB
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{
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@ -230,6 +233,19 @@ NTSTATUS STDCALL
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CdfsClose(PDEVICE_OBJECT DeviceObject,
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PIRP Irp);
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/* common.c */
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NTSTATUS
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CdfsReadSectors(IN PDEVICE_OBJECT DeviceObject,
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IN ULONG DiskSector,
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IN ULONG SectorCount,
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IN OUT PUCHAR Buffer);
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NTSTATUS
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CdfsReadRawSectors(IN PDEVICE_OBJECT DeviceObject,
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IN ULONG DiskSector,
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IN ULONG SectorCount,
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IN OUT PUCHAR Buffer);
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/* create.c */
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@ -16,7 +16,7 @@
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* $Id: common.c,v 1.3 2002/04/26 23:21:28 ekohl Exp $
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/* $Id: common.c,v 1.4 2002/05/09 15:53:02 ekohl Exp $
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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@ -118,4 +118,77 @@ CdfsReadSectors(IN PDEVICE_OBJECT DeviceObject,
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return(STATUS_SUCCESS);
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}
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NTSTATUS
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CdfsReadRawSectors(IN PDEVICE_OBJECT DeviceObject,
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IN ULONG DiskSector,
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IN ULONG SectorCount,
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IN OUT PUCHAR Buffer)
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{
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PIO_STACK_LOCATION Stack;
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IO_STATUS_BLOCK IoStatus;
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LARGE_INTEGER Offset;
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ULONG BlockSize;
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KEVENT Event;
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PIRP Irp;
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NTSTATUS Status;
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KeInitializeEvent(&Event,
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NotificationEvent,
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FALSE);
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Offset.u.LowPart = DiskSector << 11;
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Offset.u.HighPart = DiskSector >> 21;
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BlockSize = BLOCKSIZE * SectorCount;
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DPRINT("CdfsReadSectors(DeviceObject %x, DiskSector %d, Buffer %x)\n",
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DeviceObject, DiskSector, Buffer);
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DPRINT("Offset %I64x BlockSize %ld\n",
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Offset.QuadPart,
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BlockSize);
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DPRINT("Building synchronous FSD Request...\n");
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Irp = IoBuildSynchronousFsdRequest(IRP_MJ_READ,
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DeviceObject,
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Buffer,
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BlockSize,
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&Offset,
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&Event,
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&IoStatus);
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if (Irp == NULL)
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{
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DPRINT("IoBuildSynchronousFsdRequest failed\n");
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return(STATUS_INSUFFICIENT_RESOURCES);
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}
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// Stack = IoGetCurrentIrpStackLocation(Irp);
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// Stack->Flags |= SL_OVERRIDE_VERIFY_VOLUME;
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DPRINT("Calling IO Driver... with irp %x\n", Irp);
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Status = IoCallDriver(DeviceObject, Irp);
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DPRINT("Waiting for IO Operation for %x\n", Irp);
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if (Status == STATUS_PENDING)
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{
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DPRINT("Operation pending\n");
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KeWaitForSingleObject(&Event, Suspended, KernelMode, FALSE, NULL);
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DPRINT("Getting IO Status... for %x\n", Irp);
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Status = IoStatus.Status;
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}
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if (!NT_SUCCESS(Status))
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{
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DPRINT("CdfsReadSectors() failed (Status %x)\n", Status);
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DPRINT("(DeviceObject %x, DiskSector %x, Buffer %x, Offset 0x%I64x)\n",
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DeviceObject, DiskSector, Buffer,
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Offset.QuadPart);
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return(Status);
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}
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DPRINT("Block request succeeded for %x\n", Irp);
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return(STATUS_SUCCESS);
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}
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/* EOF */
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@ -16,7 +16,7 @@
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* $Id: create.c,v 1.2 2002/05/01 13:15:42 ekohl Exp $
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/* $Id: create.c,v 1.3 2002/05/09 15:53:02 ekohl Exp $
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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@ -189,6 +189,13 @@ CdfsCreateFile(PDEVICE_OBJECT DeviceObject,
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FileObject = Stack->FileObject;
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if (RequestedDisposition == FILE_CREATE ||
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RequestedDisposition == FILE_OVERWRITE_IF ||
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RequestedDisposition == FILE_SUPERSEDE)
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{
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return(STATUS_ACCESS_DENIED);
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}
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Status = CdfsOpenFile(DeviceExt,
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FileObject,
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FileObject->FileName.Buffer);
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@ -16,7 +16,7 @@
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* $Id: dirctl.c,v 1.3 2002/05/01 13:15:42 ekohl Exp $
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/* $Id: dirctl.c,v 1.4 2002/05/09 15:53:02 ekohl Exp $
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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@ -123,23 +123,19 @@ CdfsFindFile(PDEVICE_EXTENSION DeviceExt,
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*/
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{
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WCHAR name[256];
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char * block;
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WCHAR TempStr[2];
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PVOID Block;
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NTSTATUS Status;
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ULONG len;
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ULONG DirIndex;
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ULONG Offset;
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ULONG FirstSector;
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ULONG Read;
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BOOLEAN IsRoot;
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LARGE_INTEGER FileOffset;
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PVOID Context = NULL;
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ULONG DirSize;
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ULONG BufferSize;
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ULONG SectorCount;
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PUCHAR Ptr;
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PDIR_RECORD Record;
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LARGE_INTEGER StreamOffset;
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DPRINT("FindFile(Parent %x, FileToFind '%S', DirIndex: %d)\n",
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Parent, FileToFind, pDirIndex ? *pDirIndex : 0);
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@ -158,8 +154,7 @@ CdfsFindFile(PDEVICE_EXTENSION DeviceExt,
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if (Parent)
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{
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FirstSector = Parent->Entry.ExtentLocationL;
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if (FirstSector == DeviceExt->CdInfo.RootStart)
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if (Parent->Entry.ExtentLocationL == DeviceExt->CdInfo.RootStart)
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{
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IsRoot = TRUE;
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}
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@ -171,7 +166,7 @@ CdfsFindFile(PDEVICE_EXTENSION DeviceExt,
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if (IsRoot == TRUE)
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{
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FirstSector = DeviceExt->CdInfo.RootStart;
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StreamOffset.QuadPart = (LONGLONG)DeviceExt->CdInfo.RootStart * (LONGLONG)BLOCKSIZE;
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DirSize = DeviceExt->CdInfo.RootSize;
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@ -197,35 +192,22 @@ CdfsFindFile(PDEVICE_EXTENSION DeviceExt,
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}
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else
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{
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FirstSector = Parent->Entry.ExtentLocationL;
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StreamOffset.QuadPart = (LONGLONG)Parent->Entry.ExtentLocationL * (LONGLONG)BLOCKSIZE;
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DirSize = Parent->Entry.DataLengthL;
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}
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DPRINT("FirstSector %lu DirSize %lu\n", FirstSector, DirSize);
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DPRINT("StreamOffset %I64u DirSize %lu\n", StreamOffset.QuadPart, DirSize);
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if (pDirIndex && (*pDirIndex))
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DirIndex = *pDirIndex;
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BufferSize = ROUND_UP(DirSize, BLOCKSIZE);
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SectorCount = BufferSize / BLOCKSIZE;
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if(!CcMapData(DeviceExt->StreamFileObject, &StreamOffset,
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DirSize, TRUE, &Context, &Block))
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{
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return(STATUS_UNSUCCESSFUL);
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}
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DPRINT("FirstSector %lu DirSize %lu BufferSize %lu SectorCount %lu\n",
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FirstSector, DirSize, BufferSize, SectorCount);
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block = ExAllocatePool(NonPagedPool, BufferSize);
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Status = CdfsReadSectors(DeviceExt->StorageDevice,
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FirstSector,
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SectorCount,
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block);
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if (!NT_SUCCESS(Status))
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{
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DPRINT("Reading directory extent failed (Status %lx)\n", Status);
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ExFreePool(block);
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return(Status);
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}
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Ptr = (PUCHAR)block;
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Ptr = (PUCHAR)Block;
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while(TRUE)
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{
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Record = (PDIR_RECORD)Ptr;
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@ -238,7 +220,7 @@ CdfsFindFile(PDEVICE_EXTENSION DeviceExt,
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DPRINT("RecordLength %u ExtAttrRecordLength %u NameLength %u\n",
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Record->RecordLength, Record->ExtAttrRecordLength, Record->FileIdLength);
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Status = CdfsGetEntryName(DeviceExt, block, DirSize, (PVOID*)&Ptr, name, &DirIndex, pDirIndex2);
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Status = CdfsGetEntryName(DeviceExt, Block, DirSize, (PVOID*)&Ptr, name, &DirIndex, pDirIndex2);
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if (Status == STATUS_NO_MORE_ENTRIES)
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{
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break;
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@ -276,7 +258,7 @@ CdfsFindFile(PDEVICE_EXTENSION DeviceExt,
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DPRINT("FindFile: new Pathname %S, new Objectname %S, DirIndex %d\n",
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Fcb->PathName, Fcb->ObjectName, DirIndex);
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ExFreePool(block);
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CcUnpinData(Context);
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return(STATUS_SUCCESS);
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}
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@ -285,14 +267,14 @@ CdfsFindFile(PDEVICE_EXTENSION DeviceExt,
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Ptr = Ptr + Record->RecordLength;
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DirIndex++;
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if (((ULONG)Ptr - (ULONG)block) >= DirSize)
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if (((ULONG)Ptr - (ULONG)Block) >= DirSize)
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{
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DPRINT("Stopped!\n");
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break;
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}
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}
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ExFreePool(block);
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CcUnpinData(Context);
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if (pDirIndex)
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*pDirIndex = DirIndex;
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@ -16,7 +16,7 @@
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* $Id: fcb.c,v 1.4 2002/05/01 13:15:42 ekohl Exp $
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/* $Id: fcb.c,v 1.5 2002/05/09 15:53:02 ekohl Exp $
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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@ -442,15 +442,16 @@ CdfsDirFindFile(PDEVICE_EXTENSION DeviceExt,
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{
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WCHAR TempName[2];
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WCHAR Name[256];
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PUCHAR Block;
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PVOID Block;
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ULONG FirstSector;
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ULONG DirSize;
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ULONG BufferSize;
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ULONG SectorCount;
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PDIR_RECORD Record;
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ULONG Offset;
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NTSTATUS Status;
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LARGE_INTEGER StreamOffset;
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PVOID Context;
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assert(DeviceExt);
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assert(DirectoryFcb);
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assert(FileToFind);
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@ -469,27 +470,14 @@ CdfsDirFindFile(PDEVICE_EXTENSION DeviceExt,
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FileToFind = TempName;
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}
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FirstSector = DirectoryFcb->Entry.ExtentLocationL;
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DirSize = DirectoryFcb->Entry.DataLengthL;
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StreamOffset.QuadPart = (LONGLONG)DirectoryFcb->Entry.ExtentLocationL * (LONGLONG)BLOCKSIZE;
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BufferSize = ROUND_UP(DirSize, BLOCKSIZE);
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SectorCount = BufferSize / BLOCKSIZE;
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DPRINT("FirstSector %lu DirSize %lu BufferSize %lu SectorCount %lu\n",
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FirstSector, DirSize, BufferSize, SectorCount);
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Block = ExAllocatePool(NonPagedPool, BufferSize);
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Status = CdfsReadSectors(DeviceExt->StorageDevice,
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FirstSector,
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SectorCount,
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Block);
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if (!NT_SUCCESS(Status))
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{
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DPRINT("Reading directory extent failed (Status %lx)\n", Status);
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ExFreePool(Block);
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return(Status);
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}
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if(!CcMapData(DeviceExt->StreamFileObject, &StreamOffset,
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DirSize, TRUE, &Context, &Block))
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{
|
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return(STATUS_UNSUCCESSFUL);
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}
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Offset = 0;
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Record = (PDIR_RECORD)Block;
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@ -516,7 +504,7 @@ CdfsDirFindFile(PDEVICE_EXTENSION DeviceExt,
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Record,
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FoundFCB);
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ExFreePool(Block);
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CcUnpinData(Context);
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return(Status);
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}
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@ -529,12 +517,11 @@ CdfsDirFindFile(PDEVICE_EXTENSION DeviceExt,
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Record = (PDIR_RECORD)(Block + Offset);
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}
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// if (Offset >= BufferSize)
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if (Offset >= DirSize)
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break;
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}
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ExFreePool(Block);
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CcUnpinData(Context);
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return(STATUS_OBJECT_NAME_NOT_FOUND);
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}
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||||
|
|
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|
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@ -16,7 +16,7 @@
|
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* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
/* $Id: fsctl.c,v 1.3 2002/05/01 13:15:42 ekohl Exp $
|
||||
/* $Id: fsctl.c,v 1.4 2002/05/09 15:53:02 ekohl Exp $
|
||||
*
|
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* COPYRIGHT: See COPYING in the top level directory
|
||||
* PROJECT: ReactOS kernel
|
||||
|
|
@ -155,10 +155,10 @@ CdfsGetVolumeData(PDEVICE_OBJECT DeviceObject,
|
|||
do
|
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{
|
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/* Read the Primary Volume Descriptor (PVD) */
|
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Status = CdfsReadSectors(DeviceObject,
|
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Sector,
|
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1,
|
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Buffer);
|
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Status = CdfsReadRawSectors(DeviceObject,
|
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Sector,
|
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1,
|
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Buffer);
|
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if (!NT_SUCCESS(Status))
|
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return(Status);
|
||||
|
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|
|
@ -220,10 +220,10 @@ CdfsHasFileSystem(PDEVICE_OBJECT DeviceToMount)
|
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|
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DPRINT("CDFS: Checking on mount of device %08x\n", DeviceToMount);
|
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|
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Status = CdfsReadSectors(DeviceToMount,
|
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CDFS_PRIMARY_DESCRIPTOR_LOCATION,
|
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1,
|
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Buffer);
|
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Status = CdfsReadRawSectors(DeviceToMount,
|
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CDFS_PRIMARY_DESCRIPTOR_LOCATION,
|
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1,
|
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Buffer);
|
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if (!NT_SUCCESS(Status))
|
||||
{
|
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return(Status);
|
||||
|
|
@ -255,6 +255,7 @@ CdfsMountVolume(PDEVICE_OBJECT DeviceObject,
|
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PIO_STACK_LOCATION Stack;
|
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PFCB Fcb = NULL;
|
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PCCB Ccb = NULL;
|
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PVPB Vpb;
|
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NTSTATUS Status;
|
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|
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DPRINT("CdfsMountVolume() called\n");
|
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|
|
@ -267,6 +268,7 @@ CdfsMountVolume(PDEVICE_OBJECT DeviceObject,
|
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|
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Stack = IoGetCurrentIrpStackLocation(Irp);
|
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DeviceToMount = Stack->Parameters.MountVolume.DeviceObject;
|
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Vpb = Stack->Parameters.MountVolume.Vpb;
|
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|
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Status = CdfsHasFileSystem(DeviceToMount);
|
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if (!NT_SUCCESS(Status))
|
||||
|
|
@ -278,6 +280,7 @@ CdfsMountVolume(PDEVICE_OBJECT DeviceObject,
|
|||
sizeof(DEVICE_EXTENSION),
|
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NULL,
|
||||
FILE_DEVICE_FILE_SYSTEM,
|
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// FILE_DEVICE_DISK_FILE_SYSTEM,
|
||||
0,
|
||||
FALSE,
|
||||
&NewDeviceObject);
|
||||
|
|
@ -294,6 +297,15 @@ CdfsMountVolume(PDEVICE_OBJECT DeviceObject,
|
|||
if (!NT_SUCCESS(Status))
|
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goto ByeBye;
|
||||
|
||||
|
||||
|
||||
#if 0
|
||||
NewDeviceObject->StackSize = DeviceToMount->StackSize;
|
||||
Vpb->DeviceObject = NewDeviceObject;
|
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DeviceExt->Vpb = Vpb;
|
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DeviceExt->StorageDevice = DeviceToMount;
|
||||
#endif
|
||||
|
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NewDeviceObject->Vpb = DeviceToMount->Vpb;
|
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NewDeviceObject->Vpb->Flags |= VPB_MOUNTED;
|
||||
DeviceExt->StorageDevice = IoAttachDeviceToDeviceStack(NewDeviceObject,
|
||||
|
|
@ -324,12 +336,14 @@ CdfsMountVolume(PDEVICE_OBJECT DeviceObject,
|
|||
DeviceExt->StreamFileObject->FsContext2 = Ccb;
|
||||
DeviceExt->StreamFileObject->SectionObjectPointers = &Fcb->SectionObjectPointers;
|
||||
DeviceExt->StreamFileObject->PrivateCacheMap = NULL;
|
||||
DeviceExt->StreamFileObject->Vpb = NewDeviceObject->Vpb;
|
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DeviceExt->StreamFileObject->Vpb = DeviceExt->Vpb;
|
||||
Ccb->Fcb = Fcb;
|
||||
Ccb->PtrFileObject = DeviceExt->StreamFileObject;
|
||||
Fcb->FileObject = DeviceExt->StreamFileObject;
|
||||
Fcb->DevExt = (PDEVICE_EXTENSION)DeviceExt->StorageDevice;
|
||||
|
||||
Fcb->Flags = FCB_IS_VOLUME_STREAM;
|
||||
|
||||
Fcb->RFCB.FileSize.QuadPart = DeviceExt->CdInfo.VolumeSpaceSize * BLOCKSIZE;
|
||||
Fcb->RFCB.ValidDataLength.QuadPart = DeviceExt->CdInfo.VolumeSpaceSize * BLOCKSIZE;
|
||||
Fcb->RFCB.AllocationSize.QuadPart = ROUND_UP(DeviceExt->CdInfo.VolumeSpaceSize * BLOCKSIZE, PAGESIZE);
|
||||
|
|
@ -374,7 +388,7 @@ ByeBye:
|
|||
|
||||
static NTSTATUS
|
||||
CdfsVerifyVolume(PDEVICE_OBJECT DeviceObject,
|
||||
PIRP Irp)
|
||||
PIRP Irp)
|
||||
{
|
||||
PDEVICE_OBJECT DeviceToVerify;
|
||||
PIO_STACK_LOCATION Stack;
|
||||
|
|
@ -389,16 +403,21 @@ CdfsVerifyVolume(PDEVICE_OBJECT DeviceObject,
|
|||
UCHAR Part[4];
|
||||
} Serial;
|
||||
|
||||
DPRINT("CdfsVerifyVolume() called\n");
|
||||
DPRINT1("CdfsVerifyVolume() called\n");
|
||||
|
||||
#if 0
|
||||
if (DeviceObject != CdfsGlobalData->DeviceObject)
|
||||
{
|
||||
DPRINT1("DeviceObject != CdfsGlobalData->DeviceObject\n");
|
||||
return(STATUS_INVALID_DEVICE_REQUEST);
|
||||
}
|
||||
#endif
|
||||
|
||||
Stack = IoGetCurrentIrpStackLocation(Irp);
|
||||
DeviceToVerify = Stack->Parameters.VerifyVolume.DeviceObject;
|
||||
|
||||
DPRINT("Device object %p Device to verify %p\n", DeviceObject, DeviceToVerify);
|
||||
|
||||
Sector = CDFS_PRIMARY_DESCRIPTOR_LOCATION;
|
||||
|
||||
Buffer = ExAllocatePool(NonPagedPool,
|
||||
|
|
@ -408,15 +427,14 @@ CdfsVerifyVolume(PDEVICE_OBJECT DeviceObject,
|
|||
return(STATUS_INSUFFICIENT_RESOURCES);
|
||||
}
|
||||
|
||||
Status = STATUS_WRONG_VOLUME;
|
||||
|
||||
do
|
||||
{
|
||||
/* Read the Primary Volume Descriptor (PVD) */
|
||||
Status = CdfsReadSectors(DeviceToVerify,
|
||||
Sector,
|
||||
1,
|
||||
Buffer);
|
||||
Status = CdfsReadRawSectors(DeviceToVerify,
|
||||
Sector,
|
||||
1,
|
||||
Buffer);
|
||||
DPRINT("CdfsReadRawSectors() status %lx\n", Status);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
goto ByeBye;
|
||||
|
|
@ -439,6 +457,7 @@ CdfsVerifyVolume(PDEVICE_OBJECT DeviceObject,
|
|||
if (Buffer[0] == 255)
|
||||
goto ByeBye;
|
||||
|
||||
Status = STATUS_WRONG_VOLUME;
|
||||
|
||||
/* Calculate the volume serial number */
|
||||
Serial.Value = 0;
|
||||
|
|
@ -458,12 +477,8 @@ CdfsVerifyVolume(PDEVICE_OBJECT DeviceObject,
|
|||
Status = STATUS_SUCCESS;
|
||||
|
||||
ByeBye:
|
||||
|
||||
ExFreePool(Buffer);
|
||||
|
||||
|
||||
// Status = STATUS_INVALID_DEVICE_REQUEST;
|
||||
|
||||
DPRINT("CdfsVerifyVolume() done (Status: %lx)\n", Status);
|
||||
|
||||
return(Status);
|
||||
|
|
|
|||
|
|
@ -16,7 +16,7 @@
|
|||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
/* $Id: misc.c,v 1.1 2002/05/01 13:15:42 ekohl Exp $
|
||||
/* $Id: misc.c,v 1.2 2002/05/09 15:53:02 ekohl Exp $
|
||||
*
|
||||
* COPYRIGHT: See COPYING in the top level directory
|
||||
* PROJECT: ReactOS kernel
|
||||
|
|
@ -93,6 +93,8 @@ CdfsSwapString(PWCHAR Out,
|
|||
{
|
||||
t[i] = In[i+1];
|
||||
t[i+1] = In[i];
|
||||
if (t[i+1] == 0 && t[i] == ';')
|
||||
break;
|
||||
}
|
||||
t[i] = 0;
|
||||
t[i+1] = 0;
|
||||
|
|
|
|||
|
|
@ -16,7 +16,7 @@
|
|||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
/* $Id: rw.c,v 1.2 2002/05/01 21:52:05 ekohl Exp $
|
||||
/* $Id: rw.c,v 1.3 2002/05/09 15:53:02 ekohl Exp $
|
||||
*
|
||||
* COPYRIGHT: See COPYING in the top level directory
|
||||
* PROJECT: ReactOS kernel
|
||||
|
|
@ -51,6 +51,7 @@ CdfsReadFile(PDEVICE_EXTENSION DeviceExt,
|
|||
PUCHAR Buffer,
|
||||
ULONG Length,
|
||||
ULONG ReadOffset,
|
||||
ULONG IrpFlags,
|
||||
PULONG LengthRead)
|
||||
/*
|
||||
* FUNCTION: Reads data from a file
|
||||
|
|
@ -80,13 +81,14 @@ CdfsReadFile(PDEVICE_EXTENSION DeviceExt,
|
|||
if (Length == 0)
|
||||
return(STATUS_UNSUCCESSFUL);
|
||||
|
||||
#if 0
|
||||
if ((FileObject->Flags & FO_NO_INTERMEDIATE_BUFFERING) == 0)
|
||||
if (!(IrpFlags & (IRP_NOCACHE|IRP_PAGING_IO)))
|
||||
{
|
||||
LARGE_INTEGER FileOffset;
|
||||
IO_STATUS_BLOCK IoStatus;
|
||||
|
||||
FileOffset.QuadPart = ReadOffset;
|
||||
DPRINT1("Try caching!\n");
|
||||
|
||||
FileOffset.QuadPart = (LONGLONG)ReadOffset;
|
||||
CcCopyRead(FileObject,
|
||||
&FileOffset,
|
||||
Length,
|
||||
|
|
@ -97,7 +99,6 @@ CdfsReadFile(PDEVICE_EXTENSION DeviceExt,
|
|||
|
||||
return(IoStatus.Status);
|
||||
}
|
||||
#endif
|
||||
|
||||
if ((ReadOffset % BLOCKSIZE) != 0)
|
||||
{
|
||||
|
|
@ -174,12 +175,6 @@ CdfsRead(PDEVICE_OBJECT DeviceObject,
|
|||
|
||||
DPRINT("CdfsRead(DeviceObject %x, Irp %x)\n",DeviceObject,Irp);
|
||||
|
||||
if (Irp->Flags & IRP_PAGING_IO)
|
||||
{
|
||||
Status = STATUS_NOT_SUPPORTED;
|
||||
goto ByeBye;
|
||||
}
|
||||
|
||||
DeviceExt = DeviceObject->DeviceExtension;
|
||||
Stack = IoGetCurrentIrpStackLocation(Irp);
|
||||
FileObject = Stack->FileObject;
|
||||
|
|
@ -193,6 +188,7 @@ CdfsRead(PDEVICE_OBJECT DeviceObject,
|
|||
Buffer,
|
||||
ReadLength,
|
||||
ReadOffset.u.LowPart,
|
||||
Irp->Flags,
|
||||
&ReturnedReadLength);
|
||||
|
||||
ByeBye:
|
||||
|
|
|
|||
Loading…
Reference in a new issue