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https://github.com/reactos/reactos.git
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704baed2df
Not fully perfect yet, chkdsk still complains. CORE-3877
1179 lines
37 KiB
C
1179 lines
37 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* FILE: drivers/filesystems/fastfat/dirwr.c
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* PURPOSE: VFAT Filesystem : write in directory
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* PROGRAMMER: Rex Jolliff (rex@lvcablemodem.com)
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* Herve Poussineau (reactos@poussine.freesurf.fr)
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* Pierre Schweitzer (pierre@reactos.org)
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*
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*/
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/* INCLUDES *****************************************************************/
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#include "vfat.h"
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#define NDEBUG
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#include <debug.h>
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#ifdef KDBG
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extern UNICODE_STRING DebugFile;
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#endif
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NTSTATUS
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vfatFCBInitializeCacheFromVolume(
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PVCB vcb,
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PVFATFCB fcb)
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{
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PFILE_OBJECT fileObject;
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PVFATCCB newCCB;
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NTSTATUS status;
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BOOLEAN Acquired;
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/* Don't re-initialize if already done */
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if (BooleanFlagOn(fcb->Flags, FCB_CACHE_INITIALIZED))
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{
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return STATUS_SUCCESS;
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}
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ASSERT(vfatFCBIsDirectory(fcb));
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ASSERT(fcb->FileObject == NULL);
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Acquired = FALSE;
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if (!ExIsResourceAcquiredExclusive(&vcb->DirResource))
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{
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ExAcquireResourceExclusiveLite(&vcb->DirResource, TRUE);
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Acquired = TRUE;
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}
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fileObject = IoCreateStreamFileObject (NULL, vcb->StorageDevice);
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if (fileObject == NULL)
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{
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status = STATUS_INSUFFICIENT_RESOURCES;
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goto Quit;
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}
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#ifdef KDBG
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if (DebugFile.Buffer != NULL && FsRtlIsNameInExpression(&DebugFile, &fcb->LongNameU, FALSE, NULL))
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{
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DPRINT1("Attaching %p to %p (%d)\n", fcb, fileObject, fcb->RefCount);
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}
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#endif
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newCCB = ExAllocateFromNPagedLookasideList(&VfatGlobalData->CcbLookasideList);
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if (newCCB == NULL)
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{
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status = STATUS_INSUFFICIENT_RESOURCES;
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ObDereferenceObject(fileObject);
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goto Quit;
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}
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RtlZeroMemory(newCCB, sizeof (VFATCCB));
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fileObject->SectionObjectPointer = &fcb->SectionObjectPointers;
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fileObject->FsContext = fcb;
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fileObject->FsContext2 = newCCB;
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fileObject->Vpb = vcb->IoVPB;
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fcb->FileObject = fileObject;
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_SEH2_TRY
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{
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CcInitializeCacheMap(fileObject,
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(PCC_FILE_SIZES)(&fcb->RFCB.AllocationSize),
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TRUE,
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&VfatGlobalData->CacheMgrCallbacks,
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fcb);
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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status = _SEH2_GetExceptionCode();
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fcb->FileObject = NULL;
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ExFreeToNPagedLookasideList(&VfatGlobalData->CcbLookasideList, newCCB);
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ObDereferenceObject(fileObject);
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if (Acquired)
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{
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ExReleaseResourceLite(&vcb->DirResource);
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}
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return status;
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}
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_SEH2_END;
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vfatGrabFCB(vcb, fcb);
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SetFlag(fcb->Flags, FCB_CACHE_INITIALIZED);
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status = STATUS_SUCCESS;
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Quit:
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if (Acquired)
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{
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ExReleaseResourceLite(&vcb->DirResource);
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}
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return status;
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}
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/*
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* update an existing FAT entry
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*/
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NTSTATUS
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VfatUpdateEntry(
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IN PDEVICE_EXTENSION DeviceExt,
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IN PVFATFCB pFcb)
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{
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PVOID Context;
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PDIR_ENTRY PinEntry;
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LARGE_INTEGER Offset;
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ULONG SizeDirEntry;
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ULONG dirIndex;
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NTSTATUS Status;
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ASSERT(pFcb);
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if (vfatVolumeIsFatX(DeviceExt))
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{
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SizeDirEntry = sizeof(FATX_DIR_ENTRY);
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dirIndex = pFcb->startIndex;
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}
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else
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{
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SizeDirEntry = sizeof(FAT_DIR_ENTRY);
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dirIndex = pFcb->dirIndex;
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}
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DPRINT("updEntry dirIndex %u, PathName \'%wZ\'\n", dirIndex, &pFcb->PathNameU);
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if (vfatFCBIsRoot(pFcb) || BooleanFlagOn(pFcb->Flags, FCB_IS_FAT | FCB_IS_VOLUME))
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{
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return STATUS_SUCCESS;
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}
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ASSERT(pFcb->parentFcb);
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Status = vfatFCBInitializeCacheFromVolume(DeviceExt, pFcb->parentFcb);
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if (!NT_SUCCESS(Status))
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{
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return Status;
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}
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Offset.u.HighPart = 0;
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Offset.u.LowPart = dirIndex * SizeDirEntry;
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_SEH2_TRY
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{
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CcPinRead(pFcb->parentFcb->FileObject, &Offset, SizeDirEntry, PIN_WAIT, &Context, (PVOID*)&PinEntry);
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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DPRINT1("Failed write to \'%wZ\'.\n", &pFcb->parentFcb->PathNameU);
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_SEH2_YIELD(return _SEH2_GetExceptionCode());
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}
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_SEH2_END;
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pFcb->Flags &= ~FCB_IS_DIRTY;
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RtlCopyMemory(PinEntry, &pFcb->entry, SizeDirEntry);
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CcSetDirtyPinnedData(Context, NULL);
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CcUnpinData(Context);
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return STATUS_SUCCESS;
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}
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/*
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* rename an existing FAT entry
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*/
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NTSTATUS
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vfatRenameEntry(
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IN PDEVICE_EXTENSION DeviceExt,
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IN PVFATFCB pFcb,
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IN PUNICODE_STRING FileName,
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IN BOOLEAN CaseChangeOnly)
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{
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OEM_STRING NameA;
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ULONG StartIndex;
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PVOID Context = NULL;
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LARGE_INTEGER Offset;
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PFATX_DIR_ENTRY pDirEntry;
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NTSTATUS Status;
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DPRINT("vfatRenameEntry(%p, %p, %wZ, %d)\n", DeviceExt, pFcb, FileName, CaseChangeOnly);
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Status = vfatFCBInitializeCacheFromVolume(DeviceExt, pFcb->parentFcb);
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if (!NT_SUCCESS(Status))
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{
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return Status;
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}
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if (vfatVolumeIsFatX(DeviceExt))
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{
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VFAT_DIRENTRY_CONTEXT DirContext;
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/* Open associated dir entry */
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StartIndex = pFcb->startIndex;
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Offset.u.HighPart = 0;
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Offset.u.LowPart = (StartIndex * sizeof(FATX_DIR_ENTRY) / PAGE_SIZE) * PAGE_SIZE;
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_SEH2_TRY
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{
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CcPinRead(pFcb->parentFcb->FileObject, &Offset, PAGE_SIZE, PIN_WAIT, &Context, (PVOID*)&pDirEntry);
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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DPRINT1("CcPinRead(Offset %x:%x, Length %d) failed\n", Offset.u.HighPart, Offset.u.LowPart, PAGE_SIZE);
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_SEH2_YIELD(return _SEH2_GetExceptionCode());
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}
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_SEH2_END;
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pDirEntry = &pDirEntry[StartIndex % (PAGE_SIZE / sizeof(FATX_DIR_ENTRY))];
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/* Set file name */
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NameA.Buffer = (PCHAR)pDirEntry->Filename;
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NameA.Length = 0;
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NameA.MaximumLength = 42;
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RtlUnicodeStringToOemString(&NameA, FileName, FALSE);
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pDirEntry->FilenameLength = (unsigned char)NameA.Length;
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/* Update FCB */
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DirContext.DeviceExt = DeviceExt;
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DirContext.ShortNameU.Length = 0;
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DirContext.ShortNameU.MaximumLength = 0;
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DirContext.ShortNameU.Buffer = NULL;
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DirContext.LongNameU = *FileName;
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DirContext.DirEntry.FatX = *pDirEntry;
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CcSetDirtyPinnedData(Context, NULL);
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CcUnpinData(Context);
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Status = vfatUpdateFCB(DeviceExt, pFcb, &DirContext, pFcb->parentFcb);
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if (NT_SUCCESS(Status))
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{
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CcFlushCache(&pFcb->parentFcb->SectionObjectPointers, NULL, 0, NULL);
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}
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return Status;
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}
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else
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{
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/* This we cannot handle properly, move file - would likely need love */
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return VfatMoveEntry(DeviceExt, pFcb, FileName, pFcb->parentFcb);
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}
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}
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/*
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* try to find contiguous entries frees in directory,
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* extend a directory if is necessary
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*/
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BOOLEAN
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vfatFindDirSpace(
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IN PDEVICE_EXTENSION DeviceExt,
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IN PVFATFCB pDirFcb,
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IN ULONG nbSlots,
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OUT PULONG start)
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{
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LARGE_INTEGER FileOffset;
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ULONG i, count, size, nbFree = 0;
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PDIR_ENTRY pFatEntry = NULL;
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PVOID Context = NULL;
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NTSTATUS Status;
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ULONG SizeDirEntry;
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BOOLEAN IsFatX = vfatVolumeIsFatX(DeviceExt);
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FileOffset.QuadPart = 0;
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if (IsFatX)
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SizeDirEntry = sizeof(FATX_DIR_ENTRY);
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else
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SizeDirEntry = sizeof(FAT_DIR_ENTRY);
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Status = vfatFCBInitializeCacheFromVolume(DeviceExt, pDirFcb);
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if (!NT_SUCCESS(Status))
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{
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return Status;
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}
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count = pDirFcb->RFCB.FileSize.u.LowPart / SizeDirEntry;
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size = DeviceExt->FatInfo.BytesPerCluster / SizeDirEntry;
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for (i = 0; i < count; i++, pFatEntry = (PDIR_ENTRY)((ULONG_PTR)pFatEntry + SizeDirEntry))
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{
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if (Context == NULL || (i % size) == 0)
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{
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if (Context)
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{
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CcUnpinData(Context);
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}
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_SEH2_TRY
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{
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CcPinRead(pDirFcb->FileObject, &FileOffset, DeviceExt->FatInfo.BytesPerCluster, PIN_WAIT, &Context, (PVOID*)&pFatEntry);
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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_SEH2_YIELD(return FALSE);
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}
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_SEH2_END;
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FileOffset.u.LowPart += DeviceExt->FatInfo.BytesPerCluster;
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}
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if (ENTRY_END(IsFatX, pFatEntry))
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{
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break;
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}
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if (ENTRY_DELETED(IsFatX, pFatEntry))
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{
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nbFree++;
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}
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else
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{
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nbFree = 0;
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}
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if (nbFree == nbSlots)
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{
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break;
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}
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}
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if (Context)
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{
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CcUnpinData(Context);
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Context = NULL;
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}
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if (nbFree == nbSlots)
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{
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/* found enough contiguous free slots */
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*start = i - nbSlots + 1;
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}
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else
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{
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*start = i - nbFree;
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if (*start + nbSlots > count)
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{
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LARGE_INTEGER AllocationSize;
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/* extend the directory */
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if (vfatFCBIsRoot(pDirFcb) && DeviceExt->FatInfo.FatType != FAT32)
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{
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/* We can't extend a root directory on a FAT12/FAT16/FATX partition */
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return FALSE;
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}
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AllocationSize.QuadPart = pDirFcb->RFCB.FileSize.u.LowPart + DeviceExt->FatInfo.BytesPerCluster;
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Status = VfatSetAllocationSizeInformation(pDirFcb->FileObject, pDirFcb,
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DeviceExt, &AllocationSize);
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if (!NT_SUCCESS(Status))
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{
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return FALSE;
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}
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/* clear the new dir cluster */
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FileOffset.u.LowPart = (ULONG)(pDirFcb->RFCB.FileSize.QuadPart -
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DeviceExt->FatInfo.BytesPerCluster);
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_SEH2_TRY
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{
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CcPinRead(pDirFcb->FileObject, &FileOffset, DeviceExt->FatInfo.BytesPerCluster, PIN_WAIT, &Context, (PVOID*)&pFatEntry);
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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_SEH2_YIELD(return FALSE);
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}
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_SEH2_END;
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if (IsFatX)
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memset(pFatEntry, 0xff, DeviceExt->FatInfo.BytesPerCluster);
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else
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RtlZeroMemory(pFatEntry, DeviceExt->FatInfo.BytesPerCluster);
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}
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else if (*start + nbSlots < count)
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{
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/* clear the entry after the last new entry */
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FileOffset.u.LowPart = (*start + nbSlots) * SizeDirEntry;
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_SEH2_TRY
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{
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CcPinRead(pDirFcb->FileObject, &FileOffset, SizeDirEntry, PIN_WAIT, &Context, (PVOID*)&pFatEntry);
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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_SEH2_YIELD(return FALSE);
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}
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_SEH2_END;
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if (IsFatX)
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memset(pFatEntry, 0xff, SizeDirEntry);
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else
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RtlZeroMemory(pFatEntry, SizeDirEntry);
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}
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if (Context)
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{
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CcSetDirtyPinnedData(Context, NULL);
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CcUnpinData(Context);
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}
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}
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DPRINT("nbSlots %u nbFree %u, entry number %u\n", nbSlots, nbFree, *start);
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return TRUE;
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}
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/*
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create a new FAT entry
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*/
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static NTSTATUS
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FATAddEntry(
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IN PDEVICE_EXTENSION DeviceExt,
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IN PUNICODE_STRING NameU,
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IN PVFATFCB* Fcb,
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IN PVFATFCB ParentFcb,
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IN ULONG RequestedOptions,
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IN UCHAR ReqAttr,
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IN PVFAT_MOVE_CONTEXT MoveContext)
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{
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PVOID Context = NULL;
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PFAT_DIR_ENTRY pFatEntry;
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slot *pSlots;
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USHORT nbSlots = 0, j;
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PUCHAR Buffer;
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BOOLEAN needTilde = FALSE, needLong = FALSE;
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BOOLEAN BaseAllLower, BaseAllUpper;
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BOOLEAN ExtensionAllLower, ExtensionAllUpper;
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BOOLEAN InExtension;
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BOOLEAN IsDirectory;
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WCHAR c;
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ULONG CurrentCluster;
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LARGE_INTEGER SystemTime, FileOffset;
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NTSTATUS Status = STATUS_SUCCESS;
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ULONG size;
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long i;
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OEM_STRING NameA;
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CHAR aName[13];
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BOOLEAN IsNameLegal;
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BOOLEAN SpacesFound;
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VFAT_DIRENTRY_CONTEXT DirContext;
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WCHAR LongNameBuffer[LONGNAME_MAX_LENGTH + 1];
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WCHAR ShortNameBuffer[13];
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DPRINT("addEntry: Name='%wZ', Dir='%wZ'\n", NameU, &ParentFcb->PathNameU);
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DirContext.LongNameU = *NameU;
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IsDirectory = BooleanFlagOn(RequestedOptions, FILE_DIRECTORY_FILE);
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/* nb of entry needed for long name+normal entry */
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nbSlots = (DirContext.LongNameU.Length / sizeof(WCHAR) + 12) / 13 + 1;
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DPRINT("NameLen= %u, nbSlots =%u\n", DirContext.LongNameU.Length / sizeof(WCHAR), nbSlots);
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Buffer = ExAllocatePoolWithTag(NonPagedPool, (nbSlots - 1) * sizeof(FAT_DIR_ENTRY), TAG_VFAT);
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if (Buffer == NULL)
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{
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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RtlZeroMemory(Buffer, (nbSlots - 1) * sizeof(FAT_DIR_ENTRY));
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pSlots = (slot *) Buffer;
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NameA.Buffer = aName;
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NameA.Length = 0;
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NameA.MaximumLength = sizeof(aName);
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|
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DirContext.DeviceExt = DeviceExt;
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DirContext.ShortNameU.Buffer = ShortNameBuffer;
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DirContext.ShortNameU.Length = 0;
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DirContext.ShortNameU.MaximumLength = sizeof(ShortNameBuffer);
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|
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RtlZeroMemory(&DirContext.DirEntry.Fat, sizeof(FAT_DIR_ENTRY));
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|
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IsNameLegal = RtlIsNameLegalDOS8Dot3(&DirContext.LongNameU, &NameA, &SpacesFound);
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|
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if (!IsNameLegal || SpacesFound)
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{
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GENERATE_NAME_CONTEXT NameContext;
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VFAT_DIRENTRY_CONTEXT SearchContext;
|
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WCHAR ShortSearchName[13];
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needTilde = TRUE;
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needLong = TRUE;
|
|
RtlZeroMemory(&NameContext, sizeof(GENERATE_NAME_CONTEXT));
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|
SearchContext.DeviceExt = DeviceExt;
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|
SearchContext.LongNameU.Buffer = LongNameBuffer;
|
|
SearchContext.LongNameU.MaximumLength = sizeof(LongNameBuffer);
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SearchContext.ShortNameU.Buffer = ShortSearchName;
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|
SearchContext.ShortNameU.MaximumLength = sizeof(ShortSearchName);
|
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|
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for (i = 0; i < 100; i++)
|
|
{
|
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RtlGenerate8dot3Name(&DirContext.LongNameU, FALSE, &NameContext, &DirContext.ShortNameU);
|
|
DirContext.ShortNameU.Buffer[DirContext.ShortNameU.Length / sizeof(WCHAR)] = 0;
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SearchContext.DirIndex = 0;
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Status = FindFile(DeviceExt, ParentFcb, &DirContext.ShortNameU, &SearchContext, TRUE);
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if (!NT_SUCCESS(Status))
|
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{
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break;
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}
|
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else if (MoveContext)
|
|
{
|
|
ASSERT(*Fcb);
|
|
if (strncmp((char *)SearchContext.DirEntry.Fat.ShortName, (char *)(*Fcb)->entry.Fat.ShortName, 11) == 0)
|
|
{
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if (MoveContext->InPlace)
|
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{
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ASSERT(SearchContext.DirEntry.Fat.FileSize == MoveContext->FileSize);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (i == 100) /* FIXME : what to do after this ? */
|
|
{
|
|
ExFreePoolWithTag(Buffer, TAG_VFAT);
|
|
return STATUS_UNSUCCESSFUL;
|
|
}
|
|
IsNameLegal = RtlIsNameLegalDOS8Dot3(&DirContext.ShortNameU, &NameA, &SpacesFound);
|
|
}
|
|
else
|
|
{
|
|
BaseAllLower = BaseAllUpper = TRUE;
|
|
ExtensionAllLower = ExtensionAllUpper = TRUE;
|
|
InExtension = FALSE;
|
|
for (i = 0; i < DirContext.LongNameU.Length / sizeof(WCHAR); i++)
|
|
{
|
|
c = DirContext.LongNameU.Buffer[i];
|
|
if (c >= L'A' && c <= L'Z')
|
|
{
|
|
if (InExtension)
|
|
ExtensionAllLower = FALSE;
|
|
else
|
|
BaseAllLower = FALSE;
|
|
}
|
|
else if (c >= L'a' && c <= L'z')
|
|
{
|
|
if (InExtension)
|
|
ExtensionAllUpper = FALSE;
|
|
else
|
|
BaseAllUpper = FALSE;
|
|
}
|
|
else if (c > 0x7f)
|
|
{
|
|
needLong = TRUE;
|
|
break;
|
|
}
|
|
|
|
if (c == L'.')
|
|
{
|
|
InExtension = TRUE;
|
|
}
|
|
}
|
|
|
|
if ((!BaseAllLower && !BaseAllUpper) ||
|
|
(!ExtensionAllLower && !ExtensionAllUpper))
|
|
{
|
|
needLong = TRUE;
|
|
}
|
|
|
|
RtlUpcaseUnicodeString(&DirContext.ShortNameU, &DirContext.LongNameU, FALSE);
|
|
DirContext.ShortNameU.Buffer[DirContext.ShortNameU.Length / sizeof(WCHAR)] = 0;
|
|
}
|
|
aName[NameA.Length] = 0;
|
|
DPRINT("'%s', '%wZ', needTilde=%u, needLong=%u\n",
|
|
aName, &DirContext.LongNameU, needTilde, needLong);
|
|
memset(DirContext.DirEntry.Fat.ShortName, ' ', 11);
|
|
for (i = 0; i < 8 && aName[i] && aName[i] != '.'; i++)
|
|
{
|
|
DirContext.DirEntry.Fat.Filename[i] = aName[i];
|
|
}
|
|
if (aName[i] == '.')
|
|
{
|
|
i++;
|
|
for (j = 0; j < 3 && aName[i]; j++, i++)
|
|
{
|
|
DirContext.DirEntry.Fat.Ext[j] = aName[i];
|
|
}
|
|
}
|
|
if (DirContext.DirEntry.Fat.Filename[0] == 0xe5)
|
|
{
|
|
DirContext.DirEntry.Fat.Filename[0] = 0x05;
|
|
}
|
|
|
|
if (needLong)
|
|
{
|
|
RtlCopyMemory(LongNameBuffer, DirContext.LongNameU.Buffer, DirContext.LongNameU.Length);
|
|
DirContext.LongNameU.Buffer = LongNameBuffer;
|
|
DirContext.LongNameU.MaximumLength = sizeof(LongNameBuffer);
|
|
DirContext.LongNameU.Buffer[DirContext.LongNameU.Length / sizeof(WCHAR)] = 0;
|
|
memset(DirContext.LongNameU.Buffer + DirContext.LongNameU.Length / sizeof(WCHAR) + 1, 0xff,
|
|
DirContext.LongNameU.MaximumLength - DirContext.LongNameU.Length - sizeof(WCHAR));
|
|
}
|
|
else
|
|
{
|
|
nbSlots = 1;
|
|
if (BaseAllLower && !BaseAllUpper)
|
|
{
|
|
DirContext.DirEntry.Fat.lCase |= VFAT_CASE_LOWER_BASE;
|
|
}
|
|
if (ExtensionAllLower && !ExtensionAllUpper)
|
|
{
|
|
DirContext.DirEntry.Fat.lCase |= VFAT_CASE_LOWER_EXT;
|
|
}
|
|
}
|
|
|
|
DPRINT ("dos name=%11.11s\n", DirContext.DirEntry.Fat.Filename);
|
|
|
|
/* set attributes */
|
|
DirContext.DirEntry.Fat.Attrib = ReqAttr;
|
|
if (IsDirectory)
|
|
{
|
|
DirContext.DirEntry.Fat.Attrib |= FILE_ATTRIBUTE_DIRECTORY;
|
|
}
|
|
/* set dates and times */
|
|
KeQuerySystemTime(&SystemTime);
|
|
FsdSystemTimeToDosDateTime(DeviceExt, &SystemTime, &DirContext.DirEntry.Fat.CreationDate,
|
|
&DirContext.DirEntry.Fat.CreationTime);
|
|
DirContext.DirEntry.Fat.UpdateDate = DirContext.DirEntry.Fat.CreationDate;
|
|
DirContext.DirEntry.Fat.UpdateTime = DirContext.DirEntry.Fat.CreationTime;
|
|
DirContext.DirEntry.Fat.AccessDate = DirContext.DirEntry.Fat.CreationDate;
|
|
/* If it's moving, preserve creation time and file size */
|
|
if (MoveContext != NULL)
|
|
{
|
|
DirContext.DirEntry.Fat.CreationDate = MoveContext->CreationDate;
|
|
DirContext.DirEntry.Fat.CreationTime = MoveContext->CreationTime;
|
|
DirContext.DirEntry.Fat.FileSize = MoveContext->FileSize;
|
|
}
|
|
|
|
if (needLong)
|
|
{
|
|
/* calculate checksum for 8.3 name */
|
|
for (pSlots[0].alias_checksum = 0, i = 0; i < 11; i++)
|
|
{
|
|
pSlots[0].alias_checksum = (((pSlots[0].alias_checksum & 1) << 7
|
|
| ((pSlots[0].alias_checksum & 0xfe) >> 1))
|
|
+ DirContext.DirEntry.Fat.ShortName[i]);
|
|
}
|
|
/* construct slots and entry */
|
|
for (i = nbSlots - 2; i >= 0; i--)
|
|
{
|
|
DPRINT("construct slot %d\n", i);
|
|
pSlots[i].attr = 0xf;
|
|
if (i)
|
|
{
|
|
pSlots[i].id = (unsigned char)(nbSlots - i - 1);
|
|
}
|
|
else
|
|
{
|
|
pSlots[i].id = (unsigned char)(nbSlots - i - 1 + 0x40);
|
|
}
|
|
pSlots[i].alias_checksum = pSlots[0].alias_checksum;
|
|
RtlCopyMemory(pSlots[i].name0_4, DirContext.LongNameU.Buffer + (nbSlots - i - 2) * 13, 10);
|
|
RtlCopyMemory(pSlots[i].name5_10, DirContext.LongNameU.Buffer + (nbSlots - i - 2) * 13 + 5, 12);
|
|
RtlCopyMemory(pSlots[i].name11_12, DirContext.LongNameU.Buffer + (nbSlots - i - 2) * 13 + 11, 4);
|
|
}
|
|
}
|
|
/* try to find nbSlots contiguous entries frees in directory */
|
|
if (!vfatFindDirSpace(DeviceExt, ParentFcb, nbSlots, &DirContext.StartIndex))
|
|
{
|
|
ExFreePoolWithTag(Buffer, TAG_VFAT);
|
|
return STATUS_DISK_FULL;
|
|
}
|
|
DirContext.DirIndex = DirContext.StartIndex + nbSlots - 1;
|
|
if (IsDirectory)
|
|
{
|
|
/* If we aren't moving, use next */
|
|
if (MoveContext == NULL)
|
|
{
|
|
CurrentCluster = 0;
|
|
Status = NextCluster(DeviceExt, 0, &CurrentCluster, TRUE);
|
|
if (CurrentCluster == 0xffffffff || !NT_SUCCESS(Status))
|
|
{
|
|
ExFreePoolWithTag(Buffer, TAG_VFAT);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
return Status;
|
|
}
|
|
return STATUS_DISK_FULL;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
CurrentCluster = MoveContext->FirstCluster;
|
|
}
|
|
|
|
if (DeviceExt->FatInfo.FatType == FAT32)
|
|
{
|
|
DirContext.DirEntry.Fat.FirstClusterHigh = (unsigned short)(CurrentCluster >> 16);
|
|
}
|
|
DirContext.DirEntry.Fat.FirstCluster = (unsigned short)CurrentCluster;
|
|
}
|
|
else if (MoveContext != NULL)
|
|
{
|
|
CurrentCluster = MoveContext->FirstCluster;
|
|
|
|
if (DeviceExt->FatInfo.FatType == FAT32)
|
|
{
|
|
DirContext.DirEntry.Fat.FirstClusterHigh = (unsigned short)(CurrentCluster >> 16);
|
|
}
|
|
DirContext.DirEntry.Fat.FirstCluster = (unsigned short)CurrentCluster;
|
|
}
|
|
|
|
/* No need to init cache here, vfatFindDirSpace() will have done it for us */
|
|
ASSERT(BooleanFlagOn(ParentFcb->Flags, FCB_CACHE_INITIALIZED));
|
|
|
|
i = DeviceExt->FatInfo.BytesPerCluster / sizeof(FAT_DIR_ENTRY);
|
|
FileOffset.u.HighPart = 0;
|
|
FileOffset.u.LowPart = DirContext.StartIndex * sizeof(FAT_DIR_ENTRY);
|
|
if (DirContext.StartIndex / i == DirContext.DirIndex / i)
|
|
{
|
|
/* one cluster */
|
|
_SEH2_TRY
|
|
{
|
|
CcPinRead(ParentFcb->FileObject, &FileOffset, nbSlots * sizeof(FAT_DIR_ENTRY), PIN_WAIT, &Context, (PVOID*)&pFatEntry);
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
ExFreePoolWithTag(Buffer, TAG_VFAT);
|
|
_SEH2_YIELD(return _SEH2_GetExceptionCode());
|
|
}
|
|
_SEH2_END;
|
|
|
|
if (nbSlots > 1)
|
|
{
|
|
RtlCopyMemory(pFatEntry, Buffer, (nbSlots - 1) * sizeof(FAT_DIR_ENTRY));
|
|
}
|
|
RtlCopyMemory(pFatEntry + (nbSlots - 1), &DirContext.DirEntry.Fat, sizeof(FAT_DIR_ENTRY));
|
|
}
|
|
else
|
|
{
|
|
/* two clusters */
|
|
size = DeviceExt->FatInfo.BytesPerCluster -
|
|
(DirContext.StartIndex * sizeof(FAT_DIR_ENTRY)) % DeviceExt->FatInfo.BytesPerCluster;
|
|
i = size / sizeof(FAT_DIR_ENTRY);
|
|
_SEH2_TRY
|
|
{
|
|
CcPinRead(ParentFcb->FileObject, &FileOffset, size, PIN_WAIT, &Context, (PVOID*)&pFatEntry);
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
ExFreePoolWithTag(Buffer, TAG_VFAT);
|
|
_SEH2_YIELD(return _SEH2_GetExceptionCode());
|
|
}
|
|
_SEH2_END;
|
|
RtlCopyMemory(pFatEntry, Buffer, size);
|
|
CcSetDirtyPinnedData(Context, NULL);
|
|
CcUnpinData(Context);
|
|
FileOffset.u.LowPart += size;
|
|
_SEH2_TRY
|
|
{
|
|
CcPinRead(ParentFcb->FileObject, &FileOffset, nbSlots * sizeof(FAT_DIR_ENTRY) - size, PIN_WAIT, &Context, (PVOID*)&pFatEntry);
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
ExFreePoolWithTag(Buffer, TAG_VFAT);
|
|
_SEH2_YIELD(return _SEH2_GetExceptionCode());
|
|
}
|
|
_SEH2_END;
|
|
if (nbSlots - 1 > i)
|
|
{
|
|
RtlCopyMemory(pFatEntry, (PVOID)(Buffer + size), (nbSlots - 1 - i) * sizeof(FAT_DIR_ENTRY));
|
|
}
|
|
RtlCopyMemory(pFatEntry + nbSlots - 1 - i, &DirContext.DirEntry.Fat, sizeof(FAT_DIR_ENTRY));
|
|
}
|
|
CcSetDirtyPinnedData(Context, NULL);
|
|
CcUnpinData(Context);
|
|
|
|
if (MoveContext != NULL)
|
|
{
|
|
/* We're modifying an existing FCB - likely rename/move */
|
|
Status = vfatUpdateFCB(DeviceExt, *Fcb, &DirContext, ParentFcb);
|
|
}
|
|
else
|
|
{
|
|
Status = vfatMakeFCBFromDirEntry(DeviceExt, ParentFcb, &DirContext, Fcb);
|
|
}
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
ExFreePoolWithTag(Buffer, TAG_VFAT);
|
|
return Status;
|
|
}
|
|
|
|
DPRINT("new : entry=%11.11s\n", (*Fcb)->entry.Fat.Filename);
|
|
DPRINT("new : entry=%11.11s\n", DirContext.DirEntry.Fat.Filename);
|
|
|
|
if (IsDirectory)
|
|
{
|
|
Status = vfatFCBInitializeCacheFromVolume(DeviceExt, (*Fcb));
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
ExFreePoolWithTag(Buffer, TAG_VFAT);
|
|
return Status;
|
|
}
|
|
|
|
FileOffset.QuadPart = 0;
|
|
_SEH2_TRY
|
|
{
|
|
CcPinRead((*Fcb)->FileObject, &FileOffset, DeviceExt->FatInfo.BytesPerCluster, PIN_WAIT, &Context, (PVOID*)&pFatEntry);
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
ExFreePoolWithTag(Buffer, TAG_VFAT);
|
|
_SEH2_YIELD(return _SEH2_GetExceptionCode());
|
|
}
|
|
_SEH2_END;
|
|
/* clear the new directory cluster if not moving */
|
|
if (MoveContext == NULL)
|
|
{
|
|
RtlZeroMemory(pFatEntry, DeviceExt->FatInfo.BytesPerCluster);
|
|
/* create '.' and '..' */
|
|
RtlCopyMemory(&pFatEntry[0].Attrib, &DirContext.DirEntry.Fat.Attrib, sizeof(FAT_DIR_ENTRY) - 11);
|
|
RtlCopyMemory(pFatEntry[0].ShortName, ". ", 11);
|
|
RtlCopyMemory(&pFatEntry[1].Attrib, &DirContext.DirEntry.Fat.Attrib, sizeof(FAT_DIR_ENTRY) - 11);
|
|
RtlCopyMemory(pFatEntry[1].ShortName, ".. ", 11);
|
|
}
|
|
|
|
pFatEntry[1].FirstCluster = ParentFcb->entry.Fat.FirstCluster;
|
|
pFatEntry[1].FirstClusterHigh = ParentFcb->entry.Fat.FirstClusterHigh;
|
|
if (vfatFCBIsRoot(ParentFcb))
|
|
{
|
|
pFatEntry[1].FirstCluster = 0;
|
|
pFatEntry[1].FirstClusterHigh = 0;
|
|
}
|
|
CcSetDirtyPinnedData(Context, NULL);
|
|
CcUnpinData(Context);
|
|
}
|
|
ExFreePoolWithTag(Buffer, TAG_VFAT);
|
|
DPRINT("addentry ok\n");
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
/*
|
|
create a new FAT entry
|
|
*/
|
|
static NTSTATUS
|
|
FATXAddEntry(
|
|
IN PDEVICE_EXTENSION DeviceExt,
|
|
IN PUNICODE_STRING NameU,
|
|
IN PVFATFCB* Fcb,
|
|
IN PVFATFCB ParentFcb,
|
|
IN ULONG RequestedOptions,
|
|
IN UCHAR ReqAttr,
|
|
IN PVFAT_MOVE_CONTEXT MoveContext)
|
|
{
|
|
PVOID Context = NULL;
|
|
LARGE_INTEGER SystemTime, FileOffset;
|
|
OEM_STRING NameA;
|
|
VFAT_DIRENTRY_CONTEXT DirContext;
|
|
PFATX_DIR_ENTRY pFatXDirEntry;
|
|
ULONG Index;
|
|
|
|
DPRINT("addEntry: Name='%wZ', Dir='%wZ'\n", NameU, &ParentFcb->PathNameU);
|
|
|
|
DirContext.LongNameU = *NameU;
|
|
|
|
if (DirContext.LongNameU.Length / sizeof(WCHAR) > 42)
|
|
{
|
|
/* name too long */
|
|
return STATUS_NAME_TOO_LONG;
|
|
}
|
|
|
|
/* try to find 1 entry free in directory */
|
|
if (!vfatFindDirSpace(DeviceExt, ParentFcb, 1, &DirContext.StartIndex))
|
|
{
|
|
return STATUS_DISK_FULL;
|
|
}
|
|
Index = DirContext.DirIndex = DirContext.StartIndex;
|
|
if (!vfatFCBIsRoot(ParentFcb))
|
|
{
|
|
DirContext.DirIndex += 2;
|
|
DirContext.StartIndex += 2;
|
|
}
|
|
|
|
DirContext.ShortNameU.Buffer = 0;
|
|
DirContext.ShortNameU.Length = 0;
|
|
DirContext.ShortNameU.MaximumLength = 0;
|
|
DirContext.DeviceExt = DeviceExt;
|
|
RtlZeroMemory(&DirContext.DirEntry.FatX, sizeof(FATX_DIR_ENTRY));
|
|
memset(DirContext.DirEntry.FatX.Filename, 0xff, 42);
|
|
/* Use cluster, if moving */
|
|
if (MoveContext != NULL)
|
|
{
|
|
DirContext.DirEntry.FatX.FirstCluster = MoveContext->FirstCluster;
|
|
}
|
|
else
|
|
{
|
|
DirContext.DirEntry.FatX.FirstCluster = 0;
|
|
}
|
|
DirContext.DirEntry.FatX.FileSize = 0;
|
|
|
|
/* set file name */
|
|
NameA.Buffer = (PCHAR)DirContext.DirEntry.FatX.Filename;
|
|
NameA.Length = 0;
|
|
NameA.MaximumLength = 42;
|
|
RtlUnicodeStringToOemString(&NameA, &DirContext.LongNameU, FALSE);
|
|
DirContext.DirEntry.FatX.FilenameLength = (unsigned char)NameA.Length;
|
|
|
|
/* set attributes */
|
|
DirContext.DirEntry.FatX.Attrib = ReqAttr;
|
|
if (BooleanFlagOn(RequestedOptions, FILE_DIRECTORY_FILE))
|
|
{
|
|
DirContext.DirEntry.FatX.Attrib |= FILE_ATTRIBUTE_DIRECTORY;
|
|
}
|
|
|
|
/* set dates and times */
|
|
KeQuerySystemTime(&SystemTime);
|
|
FsdSystemTimeToDosDateTime(DeviceExt, &SystemTime, &DirContext.DirEntry.FatX.CreationDate,
|
|
&DirContext.DirEntry.FatX.CreationTime);
|
|
DirContext.DirEntry.FatX.UpdateDate = DirContext.DirEntry.FatX.CreationDate;
|
|
DirContext.DirEntry.FatX.UpdateTime = DirContext.DirEntry.FatX.CreationTime;
|
|
DirContext.DirEntry.FatX.AccessDate = DirContext.DirEntry.FatX.CreationDate;
|
|
DirContext.DirEntry.FatX.AccessTime = DirContext.DirEntry.FatX.CreationTime;
|
|
/* If it's moving, preserve creation time and file size */
|
|
if (MoveContext != NULL)
|
|
{
|
|
DirContext.DirEntry.FatX.CreationDate = MoveContext->CreationDate;
|
|
DirContext.DirEntry.FatX.CreationTime = MoveContext->CreationTime;
|
|
DirContext.DirEntry.FatX.FileSize = MoveContext->FileSize;
|
|
}
|
|
|
|
/* No need to init cache here, vfatFindDirSpace() will have done it for us */
|
|
ASSERT(BooleanFlagOn(ParentFcb->Flags, FCB_CACHE_INITIALIZED));
|
|
|
|
/* add entry into parent directory */
|
|
FileOffset.u.HighPart = 0;
|
|
FileOffset.u.LowPart = Index * sizeof(FATX_DIR_ENTRY);
|
|
_SEH2_TRY
|
|
{
|
|
CcPinRead(ParentFcb->FileObject, &FileOffset, sizeof(FATX_DIR_ENTRY), PIN_WAIT, &Context, (PVOID*)&pFatXDirEntry);
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
_SEH2_YIELD(return _SEH2_GetExceptionCode());
|
|
}
|
|
_SEH2_END;
|
|
RtlCopyMemory(pFatXDirEntry, &DirContext.DirEntry.FatX, sizeof(FATX_DIR_ENTRY));
|
|
CcSetDirtyPinnedData(Context, NULL);
|
|
CcUnpinData(Context);
|
|
|
|
if (MoveContext != NULL)
|
|
{
|
|
/* We're modifying an existing FCB - likely rename/move */
|
|
/* FIXME: check status */
|
|
vfatUpdateFCB(DeviceExt, *Fcb, &DirContext, ParentFcb);
|
|
}
|
|
else
|
|
{
|
|
/* FIXME: check status */
|
|
vfatMakeFCBFromDirEntry(DeviceExt, ParentFcb, &DirContext, Fcb);
|
|
}
|
|
|
|
DPRINT("addentry ok\n");
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
/*
|
|
* deleting an existing FAT entry
|
|
*/
|
|
static NTSTATUS
|
|
FATDelEntry(
|
|
IN PDEVICE_EXTENSION DeviceExt,
|
|
IN PVFATFCB pFcb,
|
|
OUT PVFAT_MOVE_CONTEXT MoveContext)
|
|
{
|
|
ULONG CurrentCluster = 0, NextCluster, i;
|
|
PVOID Context = NULL;
|
|
LARGE_INTEGER Offset;
|
|
PFAT_DIR_ENTRY pDirEntry = NULL;
|
|
NTSTATUS Status;
|
|
|
|
ASSERT(pFcb);
|
|
ASSERT(pFcb->parentFcb);
|
|
|
|
Status = vfatFCBInitializeCacheFromVolume(DeviceExt, pFcb->parentFcb);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
return Status;
|
|
}
|
|
|
|
DPRINT("delEntry PathName \'%wZ\'\n", &pFcb->PathNameU);
|
|
DPRINT("delete entry: %u to %u\n", pFcb->startIndex, pFcb->dirIndex);
|
|
Offset.u.HighPart = 0;
|
|
for (i = pFcb->startIndex; i <= pFcb->dirIndex; i++)
|
|
{
|
|
if (Context == NULL || ((i * sizeof(FAT_DIR_ENTRY)) % PAGE_SIZE) == 0)
|
|
{
|
|
if (Context)
|
|
{
|
|
CcSetDirtyPinnedData(Context, NULL);
|
|
CcUnpinData(Context);
|
|
}
|
|
Offset.u.LowPart = (i * sizeof(FAT_DIR_ENTRY) / PAGE_SIZE) * PAGE_SIZE;
|
|
_SEH2_TRY
|
|
{
|
|
CcPinRead(pFcb->parentFcb->FileObject, &Offset, PAGE_SIZE, PIN_WAIT, &Context, (PVOID*)&pDirEntry);
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
_SEH2_YIELD(return _SEH2_GetExceptionCode());
|
|
}
|
|
_SEH2_END;
|
|
}
|
|
pDirEntry[i % (PAGE_SIZE / sizeof(FAT_DIR_ENTRY))].Filename[0] = 0xe5;
|
|
if (i == pFcb->dirIndex)
|
|
{
|
|
CurrentCluster =
|
|
vfatDirEntryGetFirstCluster(DeviceExt,
|
|
(PDIR_ENTRY)&pDirEntry[i % (PAGE_SIZE / sizeof(FAT_DIR_ENTRY))]);
|
|
}
|
|
}
|
|
|
|
/* In case of moving, save properties */
|
|
if (MoveContext != NULL)
|
|
{
|
|
pDirEntry = &pDirEntry[pFcb->dirIndex % (PAGE_SIZE / sizeof(FAT_DIR_ENTRY))];
|
|
MoveContext->FirstCluster = CurrentCluster;
|
|
MoveContext->FileSize = pDirEntry->FileSize;
|
|
MoveContext->CreationTime = pDirEntry->CreationTime;
|
|
MoveContext->CreationDate = pDirEntry->CreationDate;
|
|
}
|
|
|
|
if (Context)
|
|
{
|
|
CcSetDirtyPinnedData(Context, NULL);
|
|
CcUnpinData(Context);
|
|
}
|
|
|
|
/* In case of moving, don't delete data */
|
|
if (MoveContext == NULL)
|
|
{
|
|
ULONG ClusterCount = 0;
|
|
|
|
while (CurrentCluster && CurrentCluster != 0xffffffff)
|
|
{
|
|
GetNextCluster(DeviceExt, CurrentCluster, &NextCluster);
|
|
/* FIXME: check status */
|
|
WriteCluster(DeviceExt, CurrentCluster, 0);
|
|
CurrentCluster = NextCluster;
|
|
ClusterCount++;
|
|
}
|
|
|
|
if (ClusterCount != 0 && DeviceExt->FatInfo.FatType == FAT32)
|
|
{
|
|
FAT32UpdateFreeClustersCount(DeviceExt, ClusterCount, TRUE);
|
|
}
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
/*
|
|
* deleting an existing FAT entry
|
|
*/
|
|
static NTSTATUS
|
|
FATXDelEntry(
|
|
IN PDEVICE_EXTENSION DeviceExt,
|
|
IN PVFATFCB pFcb,
|
|
OUT PVFAT_MOVE_CONTEXT MoveContext)
|
|
{
|
|
ULONG CurrentCluster = 0, NextCluster;
|
|
PVOID Context = NULL;
|
|
LARGE_INTEGER Offset;
|
|
PFATX_DIR_ENTRY pDirEntry;
|
|
ULONG StartIndex;
|
|
NTSTATUS Status;
|
|
|
|
ASSERT(pFcb);
|
|
ASSERT(pFcb->parentFcb);
|
|
ASSERT(vfatVolumeIsFatX(DeviceExt));
|
|
|
|
StartIndex = pFcb->startIndex;
|
|
|
|
Status = vfatFCBInitializeCacheFromVolume(DeviceExt, pFcb->parentFcb);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
return Status;
|
|
}
|
|
|
|
DPRINT("delEntry PathName \'%wZ\'\n", &pFcb->PathNameU);
|
|
DPRINT("delete entry: %u\n", StartIndex);
|
|
Offset.u.HighPart = 0;
|
|
Offset.u.LowPart = (StartIndex * sizeof(FATX_DIR_ENTRY) / PAGE_SIZE) * PAGE_SIZE;
|
|
_SEH2_TRY
|
|
{
|
|
CcPinRead(pFcb->parentFcb->FileObject, &Offset, PAGE_SIZE, PIN_WAIT, &Context, (PVOID*)&pDirEntry);
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
DPRINT1("CcPinRead(Offset %x:%x, Length %d) failed\n", Offset.u.HighPart, Offset.u.LowPart, PAGE_SIZE);
|
|
_SEH2_YIELD(return _SEH2_GetExceptionCode());
|
|
}
|
|
_SEH2_END;
|
|
pDirEntry = &pDirEntry[StartIndex % (PAGE_SIZE / sizeof(FATX_DIR_ENTRY))];
|
|
pDirEntry->FilenameLength = 0xe5;
|
|
CurrentCluster = vfatDirEntryGetFirstCluster(DeviceExt,
|
|
(PDIR_ENTRY)pDirEntry);
|
|
|
|
/* In case of moving, save properties */
|
|
if (MoveContext != NULL)
|
|
{
|
|
MoveContext->FirstCluster = CurrentCluster;
|
|
MoveContext->FileSize = pDirEntry->FileSize;
|
|
MoveContext->CreationTime = pDirEntry->CreationTime;
|
|
MoveContext->CreationDate = pDirEntry->CreationDate;
|
|
}
|
|
|
|
CcSetDirtyPinnedData(Context, NULL);
|
|
CcUnpinData(Context);
|
|
|
|
/* In case of moving, don't delete data */
|
|
if (MoveContext == NULL)
|
|
{
|
|
while (CurrentCluster && CurrentCluster != 0xffffffff)
|
|
{
|
|
GetNextCluster(DeviceExt, CurrentCluster, &NextCluster);
|
|
/* FIXME: check status */
|
|
WriteCluster(DeviceExt, CurrentCluster, 0);
|
|
CurrentCluster = NextCluster;
|
|
}
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
/*
|
|
* move an existing FAT entry
|
|
*/
|
|
NTSTATUS
|
|
VfatMoveEntry(
|
|
IN PDEVICE_EXTENSION DeviceExt,
|
|
IN PVFATFCB pFcb,
|
|
IN PUNICODE_STRING FileName,
|
|
IN PVFATFCB ParentFcb)
|
|
{
|
|
NTSTATUS Status;
|
|
PVFATFCB OldParent;
|
|
VFAT_MOVE_CONTEXT MoveContext;
|
|
|
|
DPRINT("VfatMoveEntry(%p, %p, %wZ, %p)\n", DeviceExt, pFcb, FileName, ParentFcb);
|
|
|
|
/* Delete old entry while keeping data */
|
|
Status = VfatDelEntry(DeviceExt, pFcb, &MoveContext);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
return Status;
|
|
}
|
|
|
|
OldParent = pFcb->parentFcb;
|
|
CcFlushCache(&OldParent->SectionObjectPointers, NULL, 0, NULL);
|
|
MoveContext.InPlace = (OldParent == ParentFcb);
|
|
|
|
/* Add our new entry with our cluster */
|
|
Status = VfatAddEntry(DeviceExt,
|
|
FileName,
|
|
&pFcb,
|
|
ParentFcb,
|
|
(vfatFCBIsDirectory(pFcb) ? FILE_DIRECTORY_FILE : 0),
|
|
*pFcb->Attributes,
|
|
&MoveContext);
|
|
|
|
CcFlushCache(&pFcb->parentFcb->SectionObjectPointers, NULL, 0, NULL);
|
|
|
|
return Status;
|
|
}
|
|
|
|
extern BOOLEAN FATXIsDirectoryEmpty(PDEVICE_EXTENSION DeviceExt, PVFATFCB Fcb);
|
|
extern BOOLEAN FATIsDirectoryEmpty(PDEVICE_EXTENSION DeviceExt, PVFATFCB Fcb);
|
|
extern NTSTATUS FATGetNextDirEntry(PVOID *pContext, PVOID *pPage, PVFATFCB pDirFcb, PVFAT_DIRENTRY_CONTEXT DirContext, BOOLEAN First);
|
|
extern NTSTATUS FATXGetNextDirEntry(PVOID *pContext, PVOID *pPage, PVFATFCB pDirFcb, PVFAT_DIRENTRY_CONTEXT DirContext, BOOLEAN First);
|
|
|
|
VFAT_DISPATCH FatXDispatch = {
|
|
FATXIsDirectoryEmpty, // .IsDirectoryEmpty
|
|
FATXAddEntry, // .AddEntry
|
|
FATXDelEntry, // .DelEntry
|
|
FATXGetNextDirEntry, // .GetNextDirEntry
|
|
};
|
|
|
|
VFAT_DISPATCH FatDispatch = {
|
|
FATIsDirectoryEmpty, // .IsDirectoryEmpty
|
|
FATAddEntry, // .AddEntry
|
|
FATDelEntry, // .DelEntry
|
|
FATGetNextDirEntry, // .GetNextDirEntry
|
|
};
|
|
|
|
/* EOF */
|