mirror of
https://github.com/reactos/reactos.git
synced 2024-07-06 04:35:07 +00:00
aeadcaf515
Modified it so that it builds in trunk (with GCC, though). Not to be switched for now, as it doesn't work in ReactOS (yet?).
1527 lines
46 KiB
C
1527 lines
46 KiB
C
/*++
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Copyright (c) 1989-2000 Microsoft Corporation
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Module Name:
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DirCtrl.c
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Abstract:
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This module implements the File Directory Control routines for Fat called
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by the dispatch driver.
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--*/
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#include "fatprocs.h"
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//
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// The Bug check file id for this module
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//
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#define BugCheckFileId (FAT_BUG_CHECK_DIRCTRL)
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//
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// The local debug trace level
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//
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#define Dbg (DEBUG_TRACE_DIRCTRL)
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WCHAR Fat8QMdot3QM[12] = { DOS_QM, DOS_QM, DOS_QM, DOS_QM, DOS_QM, DOS_QM, DOS_QM, DOS_QM,
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L'.', DOS_QM, DOS_QM, DOS_QM};
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//
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// Local procedure prototypes
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//
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NTSTATUS
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FatQueryDirectory (
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IN PIRP_CONTEXT IrpContext,
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IN PIRP Irp
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);
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VOID
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FatGetDirTimes(
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PIRP_CONTEXT IrpContext,
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PDIRENT Dirent,
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PFILE_DIRECTORY_INFORMATION DirInfo
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);
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NTSTATUS
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FatNotifyChangeDirectory (
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IN PIRP_CONTEXT IrpContext,
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IN PIRP Irp
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);
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE, FatCommonDirectoryControl)
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#pragma alloc_text(PAGE, FatFsdDirectoryControl)
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#pragma alloc_text(PAGE, FatNotifyChangeDirectory)
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#pragma alloc_text(PAGE, FatQueryDirectory)
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#pragma alloc_text(PAGE, FatGetDirTimes)
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#endif
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NTSTATUS
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NTAPI
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FatFsdDirectoryControl (
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IN PVOLUME_DEVICE_OBJECT VolumeDeviceObject,
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IN PIRP Irp
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)
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/*++
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Routine Description:
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This routine implements the FSD part of directory control
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Arguments:
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VolumeDeviceObject - Supplies the volume device object where the
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file exists
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Irp - Supplies the Irp being processed
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Return Value:
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NTSTATUS - The FSD status for the IRP
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--*/
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{
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NTSTATUS Status;
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PIRP_CONTEXT IrpContext = NULL;
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BOOLEAN TopLevel;
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DebugTrace(+1, Dbg, "FatFsdDirectoryControl\n", 0);
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//
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// Call the common directory Control routine, with blocking allowed if
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// synchronous
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//
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FsRtlEnterFileSystem();
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TopLevel = FatIsIrpTopLevel( Irp );
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_SEH2_TRY {
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IrpContext = FatCreateIrpContext( Irp, CanFsdWait( Irp ) );
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Status = FatCommonDirectoryControl( IrpContext, Irp );
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} _SEH2_EXCEPT(FatExceptionFilter( IrpContext, _SEH2_GetExceptionInformation() )) {
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//
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// We had some trouble trying to perform the requested
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// operation, so we'll abort the I/O request with
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// the error status that we get back from the
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// execption code
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//
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Status = FatProcessException( IrpContext, Irp, _SEH2_GetExceptionCode() );
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} _SEH2_END;
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if (TopLevel) { IoSetTopLevelIrp( NULL ); }
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FsRtlExitFileSystem();
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//
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// And return to our caller
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//
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DebugTrace(-1, Dbg, "FatFsdDirectoryControl -> %08lx\n", Status);
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UNREFERENCED_PARAMETER( VolumeDeviceObject );
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return Status;
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}
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NTSTATUS
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FatCommonDirectoryControl (
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IN PIRP_CONTEXT IrpContext,
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IN PIRP Irp
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)
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/*++
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Routine Description:
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This is the common routine for doing directory control operations called
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by both the fsd and fsp threads
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Arguments:
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Irp - Supplies the Irp to process
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Return Value:
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NTSTATUS - The return status for the operation
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--*/
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{
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NTSTATUS Status;
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PIO_STACK_LOCATION IrpSp;
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//
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// Get a pointer to the current Irp stack location
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//
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IrpSp = IoGetCurrentIrpStackLocation( Irp );
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DebugTrace(+1, Dbg, "FatCommonDirectoryControl\n", 0);
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DebugTrace( 0, Dbg, "Irp = %08lx\n", Irp );
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DebugTrace( 0, Dbg, "MinorFunction = %08lx\n", IrpSp->MinorFunction );
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//
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// We know this is a directory control so we'll case on the
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// minor function, and call a internal worker routine to complete
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// the irp.
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//
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switch ( IrpSp->MinorFunction ) {
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case IRP_MN_QUERY_DIRECTORY:
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Status = FatQueryDirectory( IrpContext, Irp );
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break;
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case IRP_MN_NOTIFY_CHANGE_DIRECTORY:
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Status = FatNotifyChangeDirectory( IrpContext, Irp );
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break;
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default:
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DebugTrace(0, Dbg, "Invalid Directory Control Minor Function %08lx\n", IrpSp->MinorFunction);
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FatCompleteRequest( IrpContext, Irp, STATUS_INVALID_DEVICE_REQUEST );
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Status = STATUS_INVALID_DEVICE_REQUEST;
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break;
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}
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DebugTrace(-1, Dbg, "FatCommonDirectoryControl -> %08lx\n", Status);
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return Status;
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}
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//
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// Local Support Routine
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//
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NTSTATUS
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FatQueryDirectory (
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IN PIRP_CONTEXT IrpContext,
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IN PIRP Irp
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)
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/*++
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Routine Description:
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This routine performs the query directory operation. It is responsible
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for either completing of enqueuing the input Irp.
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Arguments:
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Irp - Supplies the Irp to process
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Return Value:
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NTSTATUS - The return status for the operation
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--*/
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{
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NTSTATUS Status;
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PIO_STACK_LOCATION IrpSp;
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PVCB Vcb;
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PDCB Dcb;
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PCCB Ccb;
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PBCB Bcb;
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ULONG i;
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PUCHAR Buffer;
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CLONG UserBufferLength;
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PUNICODE_STRING UniArgFileName;
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WCHAR LongFileNameBuffer[ FAT_CREATE_INITIAL_NAME_BUF_SIZE];
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UNICODE_STRING LongFileName;
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FILE_INFORMATION_CLASS FileInformationClass;
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ULONG FileIndex;
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BOOLEAN RestartScan;
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BOOLEAN ReturnSingleEntry;
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BOOLEAN IndexSpecified;
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BOOLEAN InitialQuery;
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VBO CurrentVbo;
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BOOLEAN UpdateCcb;
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PDIRENT Dirent;
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UCHAR Fat8Dot3Buffer[12];
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OEM_STRING Fat8Dot3String;
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ULONG DiskAllocSize;
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ULONG NextEntry;
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ULONG LastEntry;
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PFILE_DIRECTORY_INFORMATION DirInfo;
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PFILE_FULL_DIR_INFORMATION FullDirInfo;
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PFILE_BOTH_DIR_INFORMATION BothDirInfo;
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PFILE_ID_FULL_DIR_INFORMATION IdFullDirInfo;
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PFILE_ID_BOTH_DIR_INFORMATION IdBothDirInfo;
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PFILE_NAMES_INFORMATION NamesInfo;
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//
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// Get the current Stack location
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//
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IrpSp = IoGetCurrentIrpStackLocation( Irp );
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//
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// Display the input values.
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//
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DebugTrace(+1, Dbg, "FatQueryDirectory...\n", 0);
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DebugTrace( 0, Dbg, " Wait = %08lx\n", FlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_WAIT));
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DebugTrace( 0, Dbg, " Irp = %08lx\n", Irp);
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DebugTrace( 0, Dbg, " ->Length = %08lx\n", IrpSp->Parameters.QueryDirectory.Length);
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DebugTrace( 0, Dbg, " ->FileName = %08lx\n", IrpSp->Parameters.QueryDirectory.FileName);
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DebugTrace( 0, Dbg, " ->FileInformationClass = %08lx\n", IrpSp->Parameters.QueryDirectory.FileInformationClass);
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DebugTrace( 0, Dbg, " ->FileIndex = %08lx\n", IrpSp->Parameters.QueryDirectory.FileIndex);
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DebugTrace( 0, Dbg, " ->UserBuffer = %08lx\n", Irp->AssociatedIrp.SystemBuffer);
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DebugTrace( 0, Dbg, " ->RestartScan = %08lx\n", FlagOn( IrpSp->Flags, SL_RESTART_SCAN ));
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DebugTrace( 0, Dbg, " ->ReturnSingleEntry = %08lx\n", FlagOn( IrpSp->Flags, SL_RETURN_SINGLE_ENTRY ));
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DebugTrace( 0, Dbg, " ->IndexSpecified = %08lx\n", FlagOn( IrpSp->Flags, SL_INDEX_SPECIFIED ));
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//
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// Reference our input parameters to make things easier
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//
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UserBufferLength = IrpSp->Parameters.QueryDirectory.Length;
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FileInformationClass = IrpSp->Parameters.QueryDirectory.FileInformationClass;
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FileIndex = IrpSp->Parameters.QueryDirectory.FileIndex;
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UniArgFileName = (PUNICODE_STRING) IrpSp->Parameters.QueryDirectory.FileName;
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RestartScan = BooleanFlagOn(IrpSp->Flags, SL_RESTART_SCAN);
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ReturnSingleEntry = BooleanFlagOn(IrpSp->Flags, SL_RETURN_SINGLE_ENTRY);
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IndexSpecified = BooleanFlagOn(IrpSp->Flags, SL_INDEX_SPECIFIED);
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//
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// Check on the type of open. We return invalid parameter for all
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// but UserDirectoryOpens. Also check that the filename is a valid
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// UNICODE string.
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//
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if (FatDecodeFileObject( IrpSp->FileObject,
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&Vcb,
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&Dcb,
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&Ccb) != UserDirectoryOpen ||
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(UniArgFileName &&
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UniArgFileName->Length % sizeof(WCHAR))) {
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FatCompleteRequest( IrpContext, Irp, STATUS_INVALID_PARAMETER );
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DebugTrace(-1, Dbg, "FatQueryDirectory -> STATUS_INVALID_PARAMETER\n", 0);
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return STATUS_INVALID_PARAMETER;
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}
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//
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// Initialize the local variables.
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//
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Bcb = NULL;
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UpdateCcb = TRUE;
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Dirent = NULL;
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Fat8Dot3String.MaximumLength = 12;
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#ifndef __REACTOS__
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Fat8Dot3String.Buffer = Fat8Dot3Buffer;
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#else
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Fat8Dot3String.Buffer = (PCHAR)Fat8Dot3Buffer;
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#endif
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LongFileName.Length = 0;
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LongFileName.MaximumLength = sizeof( LongFileNameBuffer);
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LongFileName.Buffer = LongFileNameBuffer;
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InitialQuery = (BOOLEAN)((Ccb->UnicodeQueryTemplate.Buffer == NULL) &&
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!FlagOn(Ccb->Flags, CCB_FLAG_MATCH_ALL));
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Status = STATUS_SUCCESS;
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Irp->IoStatus.Information = 0;
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DiskAllocSize = 1 << Vcb->AllocationSupport.LogOfBytesPerCluster;
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//
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// If this is the initial query, then grab exclusive access in
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// order to update the search string in the Ccb. We may
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// discover that we are not the initial query once we grab the Fcb
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// and downgrade our status.
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//
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if (InitialQuery) {
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if (!FatAcquireExclusiveFcb( IrpContext, Dcb )) {
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DebugTrace(0, Dbg, "FatQueryDirectory -> Enqueue to Fsp\n", 0);
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Status = FatFsdPostRequest( IrpContext, Irp );
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DebugTrace(-1, Dbg, "FatQueryDirectory -> %08lx\n", Status);
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return Status;
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}
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if (Ccb->UnicodeQueryTemplate.Buffer != NULL) {
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InitialQuery = FALSE;
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FatConvertToSharedFcb( IrpContext, Dcb );
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}
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} else {
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if (!FatAcquireSharedFcb( IrpContext, Dcb )) {
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DebugTrace(0, Dbg, "FatQueryDirectory -> Enqueue to Fsp\n", 0);
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Status = FatFsdPostRequest( IrpContext, Irp );
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DebugTrace(-1, Dbg, "FatQueryDirectory -> %08lx\n", Status);
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return Status;
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}
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}
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_SEH2_TRY {
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|
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ULONG BaseLength;
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ULONG BytesConverted;
|
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|
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//
|
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// If we are in the Fsp now because we had to wait earlier,
|
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// we must map the user buffer, otherwise we can use the
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// user's buffer directly.
|
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//
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Buffer = FatMapUserBuffer( IrpContext, Irp );
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|
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//
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// Make sure the Dcb is still good.
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//
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FatVerifyFcb( IrpContext, Dcb );
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|
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//
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// Determine where to start the scan. Highest priority is given
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// to the file index. Lower priority is the restart flag. If
|
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// neither of these is specified, then the Vbo offset field in the
|
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// Ccb is used.
|
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//
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|
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if (IndexSpecified) {
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CurrentVbo = FileIndex + sizeof( DIRENT );
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|
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} else if (RestartScan) {
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|
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CurrentVbo = 0;
|
||
|
||
} else {
|
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|
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CurrentVbo = Ccb->OffsetToStartSearchFrom;
|
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|
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}
|
||
|
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//
|
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// If this is the first try then allocate a buffer for the file
|
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// name.
|
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//
|
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|
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if (InitialQuery) {
|
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|
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//
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// If either:
|
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//
|
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// - No name was specified
|
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// - An empty name was specified
|
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// - We received a '*'
|
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// - The user specified the DOS equivolent of ????????.???
|
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//
|
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// then match all names.
|
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//
|
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|
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if ((UniArgFileName == NULL) ||
|
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(UniArgFileName->Length == 0) ||
|
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(UniArgFileName->Buffer == NULL) ||
|
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((UniArgFileName->Length == sizeof(WCHAR)) &&
|
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(UniArgFileName->Buffer[0] == L'*')) ||
|
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((UniArgFileName->Length == 12*sizeof(WCHAR)) &&
|
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(RtlEqualMemory( UniArgFileName->Buffer,
|
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Fat8QMdot3QM,
|
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12*sizeof(WCHAR) )))) {
|
||
|
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Ccb->ContainsWildCards = TRUE;
|
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|
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SetFlag( Ccb->Flags, CCB_FLAG_MATCH_ALL );
|
||
|
||
} else {
|
||
|
||
BOOLEAN ExtendedName = FALSE;
|
||
OEM_STRING LocalBestFit;
|
||
|
||
//
|
||
// First and formost, see if the name has wild cards.
|
||
//
|
||
|
||
Ccb->ContainsWildCards =
|
||
FsRtlDoesNameContainWildCards( UniArgFileName );
|
||
|
||
//
|
||
// Now check to see if the name contains any extended
|
||
// characters
|
||
//
|
||
|
||
for (i=0; i < UniArgFileName->Length / sizeof(WCHAR); i++) {
|
||
|
||
if (UniArgFileName->Buffer[i] >= 0x80) {
|
||
|
||
ExtendedName = TRUE;
|
||
break;
|
||
}
|
||
}
|
||
|
||
//
|
||
// OK, now do the conversions we need.
|
||
//
|
||
|
||
if (ExtendedName) {
|
||
|
||
Status = RtlUpcaseUnicodeString( &Ccb->UnicodeQueryTemplate,
|
||
UniArgFileName,
|
||
TRUE );
|
||
|
||
if (!NT_SUCCESS(Status)) {
|
||
|
||
try_return( Status );
|
||
}
|
||
|
||
SetFlag( Ccb->Flags, CCB_FLAG_FREE_UNICODE );
|
||
|
||
//
|
||
// Upcase the name and convert it to the Oem code page.
|
||
//
|
||
|
||
Status = RtlUpcaseUnicodeStringToCountedOemString( &LocalBestFit,
|
||
UniArgFileName,
|
||
TRUE );
|
||
|
||
//
|
||
// If this conversion failed for any reason other than
|
||
// an unmappable character fail the request.
|
||
//
|
||
|
||
if (!NT_SUCCESS(Status)) {
|
||
|
||
if (Status == STATUS_UNMAPPABLE_CHARACTER) {
|
||
|
||
SetFlag( Ccb->Flags, CCB_FLAG_SKIP_SHORT_NAME_COMPARE );
|
||
|
||
} else {
|
||
|
||
try_return( Status );
|
||
}
|
||
|
||
} else {
|
||
|
||
SetFlag( Ccb->Flags, CCB_FLAG_FREE_OEM_BEST_FIT );
|
||
}
|
||
|
||
} else {
|
||
|
||
PVOID Buffers;
|
||
|
||
//
|
||
// This case is optimized because I know I only have to
|
||
// worry about a-z.
|
||
//
|
||
|
||
Buffers = FsRtlAllocatePoolWithTag( PagedPool,
|
||
UniArgFileName->Length +
|
||
UniArgFileName->Length / sizeof(WCHAR),
|
||
TAG_FILENAME_BUFFER );
|
||
|
||
Ccb->UnicodeQueryTemplate.Buffer = Buffers;
|
||
Ccb->UnicodeQueryTemplate.Length = UniArgFileName->Length;
|
||
Ccb->UnicodeQueryTemplate.MaximumLength = UniArgFileName->Length;
|
||
|
||
#ifndef __REACTOS__
|
||
LocalBestFit.Buffer = (PUCHAR)Buffers + UniArgFileName->Length;
|
||
#else
|
||
LocalBestFit.Buffer = (PCHAR)Buffers + UniArgFileName->Length;
|
||
#endif
|
||
LocalBestFit.Length = UniArgFileName->Length / sizeof(WCHAR);
|
||
LocalBestFit.MaximumLength = LocalBestFit.Length;
|
||
|
||
SetFlag( Ccb->Flags, CCB_FLAG_FREE_UNICODE );
|
||
|
||
for (i=0; i < UniArgFileName->Length / sizeof(WCHAR); i++) {
|
||
|
||
WCHAR c = UniArgFileName->Buffer[i];
|
||
|
||
LocalBestFit.Buffer[i] = (UCHAR)
|
||
(Ccb->UnicodeQueryTemplate.Buffer[i] =
|
||
(c < 'a' ? c : c <= 'z' ? c - ('a' - 'A') : c));
|
||
}
|
||
}
|
||
|
||
//
|
||
// At this point we now have the upcased unicode name,
|
||
// and the two Oem names if they could be represented in
|
||
// this code page.
|
||
//
|
||
// Now determine if the Oem names are legal for what we
|
||
// going to try and do. Mark them as not usable is they
|
||
// are not legal. Note that we can optimize extended names
|
||
// since they are actually both the same string.
|
||
//
|
||
|
||
if (!FlagOn( Ccb->Flags, CCB_FLAG_SKIP_SHORT_NAME_COMPARE ) &&
|
||
!FatIsNameShortOemValid( IrpContext,
|
||
LocalBestFit,
|
||
Ccb->ContainsWildCards,
|
||
FALSE,
|
||
FALSE )) {
|
||
|
||
if (ExtendedName) {
|
||
|
||
RtlFreeOemString( &LocalBestFit );
|
||
ClearFlag( Ccb->Flags, CCB_FLAG_FREE_OEM_BEST_FIT );
|
||
}
|
||
|
||
SetFlag( Ccb->Flags, CCB_FLAG_SKIP_SHORT_NAME_COMPARE );
|
||
}
|
||
|
||
//
|
||
// OK, now both locals oem strings correctly reflect their
|
||
// usability. Now we want to load up the Ccb structure.
|
||
//
|
||
// Now we will branch on two paths of wheather the name
|
||
// is wild or not.
|
||
//
|
||
|
||
if (!FlagOn( Ccb->Flags, CCB_FLAG_SKIP_SHORT_NAME_COMPARE )) {
|
||
|
||
if (Ccb->ContainsWildCards) {
|
||
|
||
Ccb->OemQueryTemplate.Wild = LocalBestFit;
|
||
|
||
} else {
|
||
|
||
FatStringTo8dot3( IrpContext,
|
||
LocalBestFit,
|
||
&Ccb->OemQueryTemplate.Constant );
|
||
|
||
if (FlagOn(Ccb->Flags, CCB_FLAG_FREE_OEM_BEST_FIT)) {
|
||
|
||
RtlFreeOemString( &LocalBestFit );
|
||
ClearFlag( Ccb->Flags, CCB_FLAG_FREE_OEM_BEST_FIT );
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
//
|
||
// We convert to shared access.
|
||
//
|
||
|
||
FatConvertToSharedFcb( IrpContext, Dcb );
|
||
}
|
||
|
||
LastEntry = 0;
|
||
NextEntry = 0;
|
||
|
||
switch (FileInformationClass) {
|
||
|
||
case FileDirectoryInformation:
|
||
|
||
BaseLength = FIELD_OFFSET( FILE_DIRECTORY_INFORMATION,
|
||
FileName[0] );
|
||
break;
|
||
|
||
case FileFullDirectoryInformation:
|
||
|
||
BaseLength = FIELD_OFFSET( FILE_FULL_DIR_INFORMATION,
|
||
FileName[0] );
|
||
break;
|
||
|
||
case FileIdFullDirectoryInformation:
|
||
|
||
BaseLength = FIELD_OFFSET( FILE_ID_FULL_DIR_INFORMATION,
|
||
FileName[0] );
|
||
break;
|
||
|
||
case FileNamesInformation:
|
||
|
||
BaseLength = FIELD_OFFSET( FILE_NAMES_INFORMATION,
|
||
FileName[0] );
|
||
break;
|
||
|
||
case FileBothDirectoryInformation:
|
||
|
||
BaseLength = FIELD_OFFSET( FILE_BOTH_DIR_INFORMATION,
|
||
FileName[0] );
|
||
break;
|
||
|
||
case FileIdBothDirectoryInformation:
|
||
|
||
BaseLength = FIELD_OFFSET( FILE_ID_BOTH_DIR_INFORMATION,
|
||
FileName[0] );
|
||
break;
|
||
|
||
default:
|
||
|
||
try_return( Status = STATUS_INVALID_INFO_CLASS );
|
||
}
|
||
|
||
//
|
||
// At this point we are about to enter our query loop. We have
|
||
// determined the index into the directory file to begin the
|
||
// search. LastEntry and NextEntry are used to index into the user
|
||
// buffer. LastEntry is the last entry we've added, NextEntry is
|
||
// current one we're working on. If NextEntry is non-zero, then
|
||
// at least one entry was added.
|
||
//
|
||
|
||
while ( TRUE ) {
|
||
|
||
VBO NextVbo;
|
||
ULONG FileNameLength;
|
||
ULONG BytesRemainingInBuffer;
|
||
|
||
|
||
DebugTrace(0, Dbg, "FatQueryDirectory -> Top of loop\n", 0);
|
||
|
||
//
|
||
// If the user had requested only a single match and we have
|
||
// returned that, then we stop at this point.
|
||
//
|
||
|
||
if (ReturnSingleEntry && NextEntry != 0) {
|
||
|
||
try_return( Status );
|
||
}
|
||
|
||
//
|
||
// We call FatLocateDirent to lock down the next matching dirent.
|
||
//
|
||
|
||
FatLocateDirent( IrpContext,
|
||
Dcb,
|
||
Ccb,
|
||
CurrentVbo,
|
||
&Dirent,
|
||
&Bcb,
|
||
&NextVbo,
|
||
NULL,
|
||
&LongFileName);
|
||
|
||
//
|
||
// If we didn't receive a dirent, then we are at the end of the
|
||
// directory. If we have returned any files, we exit with
|
||
// success, otherwise we return STATUS_NO_MORE_FILES.
|
||
//
|
||
|
||
if (!Dirent) {
|
||
|
||
DebugTrace(0, Dbg, "FatQueryDirectory -> No dirent\n", 0);
|
||
|
||
if (NextEntry == 0) {
|
||
|
||
UpdateCcb = FALSE;
|
||
|
||
if (InitialQuery) {
|
||
|
||
Status = STATUS_NO_SUCH_FILE;
|
||
|
||
} else {
|
||
|
||
Status = STATUS_NO_MORE_FILES;
|
||
}
|
||
}
|
||
|
||
try_return( Status );
|
||
}
|
||
|
||
//
|
||
// Protect access to the user buffer with an exception handler.
|
||
// Since (at our request) IO doesn't buffer these requests, we have
|
||
// to guard against a user messing with the page protection and other
|
||
// such trickery.
|
||
//
|
||
|
||
_SEH2_TRY {
|
||
|
||
if (LongFileName.Length == 0) {
|
||
|
||
//
|
||
// Now we have an entry to return to our caller. We'll convert
|
||
// the name from the form in the dirent to a <name>.<ext> form.
|
||
// We'll case on the type of information requested and fill up
|
||
// the user buffer if everything fits.
|
||
//
|
||
|
||
Fat8dot3ToString( IrpContext, Dirent, TRUE, &Fat8Dot3String );
|
||
|
||
//
|
||
// Determine the UNICODE length of the file name.
|
||
//
|
||
|
||
FileNameLength = RtlOemStringToCountedUnicodeSize(&Fat8Dot3String);
|
||
|
||
//
|
||
// Here are the rules concerning filling up the buffer:
|
||
//
|
||
// 1. The Io system garentees that there will always be
|
||
// enough room for at least one base record.
|
||
//
|
||
// 2. If the full first record (including file name) cannot
|
||
// fit, as much of the name as possible is copied and
|
||
// STATUS_BUFFER_OVERFLOW is returned.
|
||
//
|
||
// 3. If a subsequent record cannot completely fit into the
|
||
// buffer, none of it (as in 0 bytes) is copied, and
|
||
// STATUS_SUCCESS is returned. A subsequent query will
|
||
// pick up with this record.
|
||
//
|
||
|
||
BytesRemainingInBuffer = UserBufferLength - NextEntry;
|
||
|
||
if ( (NextEntry != 0) &&
|
||
( (BaseLength + FileNameLength > BytesRemainingInBuffer) ||
|
||
(UserBufferLength < NextEntry) ) ) {
|
||
|
||
DebugTrace(0, Dbg, "Next entry won't fit\n", 0);
|
||
|
||
try_return( Status = STATUS_SUCCESS );
|
||
}
|
||
|
||
ASSERT( BytesRemainingInBuffer >= BaseLength );
|
||
|
||
//
|
||
// Zero the base part of the structure.
|
||
//
|
||
|
||
RtlZeroMemory( &Buffer[NextEntry], BaseLength );
|
||
|
||
switch ( FileInformationClass ) {
|
||
|
||
//
|
||
// Now fill the base parts of the strucure that are applicable.
|
||
//
|
||
|
||
case FileBothDirectoryInformation:
|
||
case FileFullDirectoryInformation:
|
||
case FileIdBothDirectoryInformation:
|
||
case FileIdFullDirectoryInformation:
|
||
|
||
DebugTrace(0, Dbg, "FatQueryDirectory -> Getting file full directory information\n", 0);
|
||
|
||
//
|
||
// Get the Ea file length.
|
||
//
|
||
|
||
FullDirInfo = (PFILE_FULL_DIR_INFORMATION)&Buffer[NextEntry];
|
||
|
||
//
|
||
// If the EAs are corrupt, ignore the error. We don't want
|
||
// to abort the directory query.
|
||
//
|
||
|
||
_SEH2_TRY {
|
||
|
||
FatGetEaLength( IrpContext,
|
||
Vcb,
|
||
Dirent,
|
||
&FullDirInfo->EaSize );
|
||
|
||
} _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) {
|
||
|
||
FatResetExceptionState( IrpContext );
|
||
FullDirInfo->EaSize = 0;
|
||
} _SEH2_END;
|
||
|
||
case FileDirectoryInformation:
|
||
|
||
DirInfo = (PFILE_DIRECTORY_INFORMATION)&Buffer[NextEntry];
|
||
|
||
FatGetDirTimes( IrpContext, Dirent, DirInfo );
|
||
|
||
DirInfo->EndOfFile.QuadPart = Dirent->FileSize;
|
||
|
||
if (!FlagOn( Dirent->Attributes, FAT_DIRENT_ATTR_DIRECTORY )) {
|
||
|
||
DirInfo->AllocationSize.QuadPart =
|
||
(((Dirent->FileSize + DiskAllocSize - 1) / DiskAllocSize) *
|
||
DiskAllocSize );
|
||
}
|
||
|
||
DirInfo->FileAttributes = Dirent->Attributes != 0 ?
|
||
Dirent->Attributes :
|
||
FILE_ATTRIBUTE_NORMAL;
|
||
|
||
DirInfo->FileIndex = NextVbo;
|
||
|
||
DirInfo->FileNameLength = FileNameLength;
|
||
|
||
DebugTrace(0, Dbg, "FatQueryDirectory -> Name = \"%Z\"\n", &Fat8Dot3String);
|
||
|
||
break;
|
||
|
||
case FileNamesInformation:
|
||
|
||
DebugTrace(0, Dbg, "FatQueryDirectory -> Getting file names information\n", 0);
|
||
|
||
NamesInfo = (PFILE_NAMES_INFORMATION)&Buffer[NextEntry];
|
||
|
||
NamesInfo->FileIndex = NextVbo;
|
||
|
||
NamesInfo->FileNameLength = FileNameLength;
|
||
|
||
DebugTrace(0, Dbg, "FatQueryDirectory -> Name = \"%Z\"\n", &Fat8Dot3String );
|
||
|
||
break;
|
||
|
||
default:
|
||
|
||
FatBugCheck( FileInformationClass, 0, 0 );
|
||
}
|
||
|
||
BytesConverted = 0;
|
||
|
||
Status = RtlOemToUnicodeN( (PWCH)&Buffer[NextEntry + BaseLength],
|
||
BytesRemainingInBuffer - BaseLength,
|
||
&BytesConverted,
|
||
Fat8Dot3String.Buffer,
|
||
Fat8Dot3String.Length );
|
||
|
||
//
|
||
// Check for the case that a single entry doesn't fit.
|
||
// This should only get this far on the first entry
|
||
//
|
||
|
||
if (BytesConverted < FileNameLength) {
|
||
|
||
ASSERT( NextEntry == 0 );
|
||
Status = STATUS_BUFFER_OVERFLOW;
|
||
}
|
||
|
||
//
|
||
// Set up the previous next entry offset
|
||
//
|
||
|
||
*((PULONG)(&Buffer[LastEntry])) = NextEntry - LastEntry;
|
||
|
||
//
|
||
// And indicate how much of the user buffer we have currently
|
||
// used up. We must compute this value before we long align
|
||
// ourselves for the next entry
|
||
//
|
||
|
||
Irp->IoStatus.Information = QuadAlign( Irp->IoStatus.Information ) +
|
||
BaseLength + BytesConverted;
|
||
|
||
//
|
||
// If something happened with the conversion, bail here.
|
||
//
|
||
|
||
if ( !NT_SUCCESS( Status ) ) {
|
||
|
||
try_return( NOTHING );
|
||
}
|
||
|
||
} else {
|
||
|
||
ULONG ShortNameLength;
|
||
|
||
FileNameLength = LongFileName.Length;
|
||
|
||
//
|
||
// Here are the rules concerning filling up the buffer:
|
||
//
|
||
// 1. The Io system garentees that there will always be
|
||
// enough room for at least one base record.
|
||
//
|
||
// 2. If the full first record (including file name) cannot
|
||
// fit, as much of the name as possible is copied and
|
||
// STATUS_BUFFER_OVERFLOW is returned.
|
||
//
|
||
// 3. If a subsequent record cannot completely fit into the
|
||
// buffer, none of it (as in 0 bytes) is copied, and
|
||
// STATUS_SUCCESS is returned. A subsequent query will
|
||
// pick up with this record.
|
||
//
|
||
|
||
BytesRemainingInBuffer = UserBufferLength - NextEntry;
|
||
|
||
if ( (NextEntry != 0) &&
|
||
( (BaseLength + FileNameLength > BytesRemainingInBuffer) ||
|
||
(UserBufferLength < NextEntry) ) ) {
|
||
|
||
DebugTrace(0, Dbg, "Next entry won't fit\n", 0);
|
||
|
||
try_return( Status = STATUS_SUCCESS );
|
||
}
|
||
|
||
ASSERT( BytesRemainingInBuffer >= BaseLength );
|
||
|
||
//
|
||
// Zero the base part of the structure.
|
||
//
|
||
|
||
RtlZeroMemory( &Buffer[NextEntry], BaseLength );
|
||
|
||
switch ( FileInformationClass ) {
|
||
|
||
//
|
||
// Now fill the base parts of the strucure that are applicable.
|
||
//
|
||
|
||
case FileBothDirectoryInformation:
|
||
case FileIdBothDirectoryInformation:
|
||
|
||
BothDirInfo = (PFILE_BOTH_DIR_INFORMATION)&Buffer[NextEntry];
|
||
|
||
//
|
||
// Now we have an entry to return to our caller. We'll convert
|
||
// the name from the form in the dirent to a <name>.<ext> form.
|
||
// We'll case on the type of information requested and fill up
|
||
// the user buffer if everything fits.
|
||
//
|
||
|
||
Fat8dot3ToString( IrpContext, Dirent, FALSE, &Fat8Dot3String );
|
||
|
||
ASSERT( Fat8Dot3String.Length <= 12 );
|
||
|
||
Status = RtlOemToUnicodeN( &BothDirInfo->ShortName[0],
|
||
12*sizeof(WCHAR),
|
||
&ShortNameLength,
|
||
Fat8Dot3String.Buffer,
|
||
Fat8Dot3String.Length );
|
||
|
||
ASSERT( Status != STATUS_BUFFER_OVERFLOW );
|
||
ASSERT( BothDirInfo->ShortNameLength <= 12*sizeof(WCHAR) );
|
||
|
||
//
|
||
// Copy the length into the dirinfo structure. Note
|
||
// that the LHS below is a USHORT, so it can not
|
||
// be specificed as the OUT parameter above.
|
||
//
|
||
|
||
BothDirInfo->ShortNameLength = (UCHAR)ShortNameLength;
|
||
|
||
//
|
||
// If something happened with the conversion, bail here.
|
||
//
|
||
|
||
if ( !NT_SUCCESS( Status ) ) {
|
||
|
||
try_return( NOTHING );
|
||
}
|
||
|
||
case FileFullDirectoryInformation:
|
||
case FileIdFullDirectoryInformation:
|
||
|
||
DebugTrace(0, Dbg, "FatQueryDirectory -> Getting file full directory information\n", 0);
|
||
|
||
//
|
||
// Get the Ea file length.
|
||
//
|
||
|
||
FullDirInfo = (PFILE_FULL_DIR_INFORMATION)&Buffer[NextEntry];
|
||
|
||
//
|
||
// If the EAs are corrupt, ignore the error. We don't want
|
||
// to abort the directory query.
|
||
//
|
||
|
||
_SEH2_TRY {
|
||
|
||
FatGetEaLength( IrpContext,
|
||
Vcb,
|
||
Dirent,
|
||
&FullDirInfo->EaSize );
|
||
|
||
} _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) {
|
||
|
||
FatResetExceptionState( IrpContext );
|
||
FullDirInfo->EaSize = 0;
|
||
} _SEH2_END;
|
||
|
||
case FileDirectoryInformation:
|
||
|
||
DirInfo = (PFILE_DIRECTORY_INFORMATION)&Buffer[NextEntry];
|
||
|
||
FatGetDirTimes( IrpContext, Dirent, DirInfo );
|
||
|
||
DirInfo->EndOfFile.QuadPart = Dirent->FileSize;
|
||
|
||
if (!FlagOn( Dirent->Attributes, FAT_DIRENT_ATTR_DIRECTORY )) {
|
||
|
||
DirInfo->AllocationSize.QuadPart = (
|
||
(( Dirent->FileSize
|
||
+ DiskAllocSize - 1 )
|
||
/ DiskAllocSize )
|
||
* DiskAllocSize );
|
||
}
|
||
|
||
DirInfo->FileAttributes = Dirent->Attributes != 0 ?
|
||
Dirent->Attributes :
|
||
FILE_ATTRIBUTE_NORMAL;
|
||
|
||
DirInfo->FileIndex = NextVbo;
|
||
|
||
DirInfo->FileNameLength = FileNameLength;
|
||
|
||
DebugTrace(0, Dbg, "FatQueryDirectory -> Name = \"%Z\"\n", &Fat8Dot3String);
|
||
|
||
break;
|
||
|
||
case FileNamesInformation:
|
||
|
||
DebugTrace(0, Dbg, "FatQueryDirectory -> Getting file names information\n", 0);
|
||
|
||
NamesInfo = (PFILE_NAMES_INFORMATION)&Buffer[NextEntry];
|
||
|
||
NamesInfo->FileIndex = NextVbo;
|
||
|
||
NamesInfo->FileNameLength = FileNameLength;
|
||
|
||
DebugTrace(0, Dbg, "FatQueryDirectory -> Name = \"%Z\"\n", &Fat8Dot3String );
|
||
|
||
break;
|
||
|
||
default:
|
||
|
||
FatBugCheck( FileInformationClass, 0, 0 );
|
||
}
|
||
|
||
BytesConverted = BytesRemainingInBuffer - BaseLength >= FileNameLength ?
|
||
FileNameLength :
|
||
BytesRemainingInBuffer - BaseLength;
|
||
|
||
RtlCopyMemory( &Buffer[NextEntry + BaseLength],
|
||
&LongFileName.Buffer[0],
|
||
BytesConverted );
|
||
|
||
//
|
||
// Set up the previous next entry offset
|
||
//
|
||
|
||
*((PULONG)(&Buffer[LastEntry])) = NextEntry - LastEntry;
|
||
|
||
//
|
||
// And indicate how much of the user buffer we have currently
|
||
// used up. We must compute this value before we long align
|
||
// ourselves for the next entry
|
||
//
|
||
|
||
Irp->IoStatus.Information += BaseLength + BytesConverted;
|
||
|
||
//
|
||
// Check for the case that a single entry doesn't fit.
|
||
// This should only get this far on the first entry.
|
||
//
|
||
|
||
if (BytesConverted < FileNameLength) {
|
||
|
||
ASSERT( NextEntry == 0 );
|
||
|
||
try_return( Status = STATUS_BUFFER_OVERFLOW );
|
||
}
|
||
}
|
||
|
||
//
|
||
// Finish up by filling in the FileId
|
||
//
|
||
|
||
switch ( FileInformationClass ) {
|
||
|
||
case FileIdBothDirectoryInformation:
|
||
|
||
IdBothDirInfo = (PFILE_ID_BOTH_DIR_INFORMATION)&Buffer[NextEntry];
|
||
IdBothDirInfo->FileId.QuadPart = FatGenerateFileIdFromDirentAndOffset( Dcb, Dirent, NextVbo );
|
||
break;
|
||
|
||
case FileIdFullDirectoryInformation:
|
||
|
||
IdFullDirInfo = (PFILE_ID_FULL_DIR_INFORMATION)&Buffer[NextEntry];
|
||
IdFullDirInfo->FileId.QuadPart = FatGenerateFileIdFromDirentAndOffset( Dcb, Dirent, NextVbo );
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
|
||
} _SEH2_EXCEPT (EXCEPTION_EXECUTE_HANDLER) {
|
||
|
||
//
|
||
// We had a problem filling in the user's buffer, so stop and
|
||
// fail this request. This is the only reason any exception
|
||
// would have occured at this level.
|
||
//
|
||
|
||
Irp->IoStatus.Information = 0;
|
||
UpdateCcb = FALSE;
|
||
try_return( Status = _SEH2_GetExceptionCode());
|
||
} _SEH2_END;
|
||
|
||
//
|
||
// Set ourselves up for the next iteration
|
||
//
|
||
|
||
LastEntry = NextEntry;
|
||
NextEntry += (ULONG)QuadAlign(BaseLength + BytesConverted);
|
||
|
||
CurrentVbo = NextVbo + sizeof( DIRENT );
|
||
}
|
||
|
||
try_exit: NOTHING;
|
||
} _SEH2_FINALLY {
|
||
|
||
DebugUnwind( FatQueryDirectory );
|
||
|
||
FatReleaseFcb( IrpContext, Dcb );
|
||
|
||
//
|
||
// Unpin data in cache if still held.
|
||
//
|
||
|
||
FatUnpinBcb( IrpContext, Bcb );
|
||
|
||
//
|
||
// Free any dynamically allocated string buffer
|
||
//
|
||
|
||
FatFreeStringBuffer( &LongFileName);
|
||
|
||
//
|
||
// Perform any cleanup. If this is the first query, then store
|
||
// the filename in the Ccb if successful. Also update the
|
||
// VBO index for the next search. This is done by transferring
|
||
// from shared access to exclusive access and copying the
|
||
// data from the local copies.
|
||
//
|
||
|
||
if (!_SEH2_AbnormalTermination()) {
|
||
|
||
if (UpdateCcb) {
|
||
|
||
//
|
||
// Store the most recent VBO to use as a starting point for
|
||
// the next search.
|
||
//
|
||
|
||
Ccb->OffsetToStartSearchFrom = CurrentVbo;
|
||
}
|
||
|
||
FatCompleteRequest( IrpContext, Irp, Status );
|
||
}
|
||
|
||
DebugTrace(-1, Dbg, "FatQueryDirectory -> %08lx\n", Status);
|
||
|
||
} _SEH2_END;
|
||
|
||
return Status;
|
||
}
|
||
|
||
|
||
//
|
||
// Local Support Routine
|
||
//
|
||
|
||
VOID
|
||
FatGetDirTimes(
|
||
PIRP_CONTEXT IrpContext,
|
||
PDIRENT Dirent,
|
||
PFILE_DIRECTORY_INFORMATION DirInfo
|
||
)
|
||
|
||
/*++
|
||
|
||
Routine Description:
|
||
|
||
This routine pulls the date/time information from a dirent and fills
|
||
in the DirInfo structure.
|
||
|
||
Arguments:
|
||
|
||
Dirent - Supplies the dirent
|
||
DirInfo - Supplies the target structure
|
||
|
||
Return Value:
|
||
|
||
VOID
|
||
|
||
--*/
|
||
|
||
|
||
{
|
||
//
|
||
// Start with the Last Write Time.
|
||
//
|
||
|
||
DirInfo->LastWriteTime =
|
||
FatFatTimeToNtTime( IrpContext,
|
||
Dirent->LastWriteTime,
|
||
0 );
|
||
|
||
//
|
||
// These fields are only non-zero when in Chicago mode.
|
||
//
|
||
|
||
if (FatData.ChicagoMode) {
|
||
|
||
//
|
||
// Do a quick check here for Creation and LastAccess
|
||
// times that are the same as the LastWriteTime.
|
||
//
|
||
|
||
if (*((UNALIGNED LONG *)&Dirent->CreationTime) ==
|
||
*((UNALIGNED LONG *)&Dirent->LastWriteTime)) {
|
||
|
||
DirInfo->CreationTime.QuadPart =
|
||
|
||
DirInfo->LastWriteTime.QuadPart +
|
||
Dirent->CreationMSec * 10 * 1000 * 10;
|
||
|
||
} else {
|
||
|
||
//
|
||
// Only do the really hard work if this field is non-zero.
|
||
//
|
||
|
||
if (((PUSHORT)Dirent)[8] != 0) {
|
||
|
||
DirInfo->CreationTime =
|
||
FatFatTimeToNtTime( IrpContext,
|
||
Dirent->CreationTime,
|
||
Dirent->CreationMSec );
|
||
|
||
} else {
|
||
|
||
ExLocalTimeToSystemTime( &FatJanOne1980,
|
||
&DirInfo->CreationTime );
|
||
}
|
||
}
|
||
|
||
//
|
||
// Do a quick check for LastAccessDate.
|
||
//
|
||
|
||
if (*((PUSHORT)&Dirent->LastAccessDate) ==
|
||
*((PUSHORT)&Dirent->LastWriteTime.Date)) {
|
||
|
||
PFAT_TIME WriteTime;
|
||
|
||
WriteTime = &Dirent->LastWriteTime.Time;
|
||
|
||
DirInfo->LastAccessTime.QuadPart =
|
||
DirInfo->LastWriteTime.QuadPart -
|
||
UInt32x32To64(((WriteTime->DoubleSeconds * 2) +
|
||
(WriteTime->Minute * 60) +
|
||
(WriteTime->Hour * 60 * 60)),
|
||
1000 * 1000 * 10);
|
||
|
||
} else {
|
||
|
||
//
|
||
// Only do the really hard work if this field is non-zero.
|
||
//
|
||
|
||
if (((PUSHORT)Dirent)[9] != 0) {
|
||
|
||
DirInfo->LastAccessTime =
|
||
FatFatDateToNtTime( IrpContext,
|
||
Dirent->LastAccessDate );
|
||
|
||
} else {
|
||
|
||
ExLocalTimeToSystemTime( &FatJanOne1980,
|
||
&DirInfo->LastAccessTime );
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
//
|
||
// Local Support Routine
|
||
//
|
||
|
||
NTSTATUS
|
||
FatNotifyChangeDirectory (
|
||
IN PIRP_CONTEXT IrpContext,
|
||
IN PIRP Irp
|
||
)
|
||
|
||
/*++
|
||
|
||
Routine Description:
|
||
|
||
This routine performs the notify change directory operation. It is
|
||
responsible for either completing of enqueuing the input Irp.
|
||
|
||
Arguments:
|
||
|
||
Irp - Supplies the Irp to process
|
||
|
||
Return Value:
|
||
|
||
NTSTATUS - The return status for the operation
|
||
|
||
--*/
|
||
|
||
{
|
||
NTSTATUS Status;
|
||
PIO_STACK_LOCATION IrpSp;
|
||
PVCB Vcb;
|
||
PDCB Dcb;
|
||
PCCB Ccb;
|
||
ULONG CompletionFilter;
|
||
BOOLEAN WatchTree;
|
||
|
||
BOOLEAN CompleteRequest;
|
||
|
||
//
|
||
// Get the current Stack location
|
||
//
|
||
|
||
IrpSp = IoGetCurrentIrpStackLocation( Irp );
|
||
|
||
DebugTrace(+1, Dbg, "FatNotifyChangeDirectory...\n", 0);
|
||
DebugTrace( 0, Dbg, " Wait = %08lx\n", FlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_WAIT));
|
||
DebugTrace( 0, Dbg, " Irp = %08lx\n", Irp);
|
||
DebugTrace( 0, Dbg, " ->CompletionFilter = %08lx\n", IrpSp->Parameters.NotifyDirectory.CompletionFilter);
|
||
|
||
//
|
||
// Always set the wait flag in the Irp context for the original request.
|
||
//
|
||
|
||
SetFlag( IrpContext->Flags, IRP_CONTEXT_FLAG_WAIT );
|
||
|
||
//
|
||
// Assume we don't complete request.
|
||
//
|
||
|
||
CompleteRequest = FALSE;
|
||
|
||
//
|
||
// Check on the type of open. We return invalid parameter for all
|
||
// but UserDirectoryOpens.
|
||
//
|
||
|
||
if (FatDecodeFileObject( IrpSp->FileObject,
|
||
&Vcb,
|
||
&Dcb,
|
||
&Ccb ) != UserDirectoryOpen) {
|
||
|
||
FatCompleteRequest( IrpContext, Irp, STATUS_INVALID_PARAMETER );
|
||
DebugTrace(-1, Dbg, "FatQueryDirectory -> STATUS_INVALID_PARAMETER\n", 0);
|
||
|
||
return STATUS_INVALID_PARAMETER;
|
||
|
||
}
|
||
|
||
//
|
||
// Reference our input parameter to make things easier
|
||
//
|
||
|
||
CompletionFilter = IrpSp->Parameters.NotifyDirectory.CompletionFilter;
|
||
WatchTree = BooleanFlagOn( IrpSp->Flags, SL_WATCH_TREE );
|
||
|
||
//
|
||
// Try to acquire exclusive access to the Dcb and enqueue the Irp to the
|
||
// Fsp if we didn't get access
|
||
//
|
||
|
||
if (!FatAcquireExclusiveFcb( IrpContext, Dcb )) {
|
||
|
||
DebugTrace(0, Dbg, "FatNotifyChangeDirectory -> Cannot Acquire Fcb\n", 0);
|
||
|
||
Status = FatFsdPostRequest( IrpContext, Irp );
|
||
|
||
DebugTrace(-1, Dbg, "FatNotifyChangeDirectory -> %08lx\n", Status);
|
||
return Status;
|
||
}
|
||
|
||
_SEH2_TRY {
|
||
|
||
//
|
||
// Make sure the Fcb is still good
|
||
//
|
||
|
||
FatVerifyFcb( IrpContext, Dcb );
|
||
|
||
//
|
||
// We need the full name.
|
||
//
|
||
|
||
FatSetFullFileNameInFcb( IrpContext, Dcb );
|
||
|
||
//
|
||
// If the file is marked as DELETE_PENDING then complete this
|
||
// request immediately.
|
||
//
|
||
|
||
if (FlagOn( Dcb->FcbState, FCB_STATE_DELETE_ON_CLOSE )) {
|
||
|
||
FatRaiseStatus( IrpContext, STATUS_DELETE_PENDING );
|
||
}
|
||
|
||
//
|
||
// Call the Fsrtl package to process the request.
|
||
//
|
||
|
||
FsRtlNotifyFullChangeDirectory( Vcb->NotifySync,
|
||
&Vcb->DirNotifyList,
|
||
Ccb,
|
||
(PSTRING)&Dcb->FullFileName,
|
||
WatchTree,
|
||
FALSE,
|
||
CompletionFilter,
|
||
Irp,
|
||
NULL,
|
||
NULL );
|
||
|
||
Status = STATUS_PENDING;
|
||
|
||
CompleteRequest = TRUE;
|
||
|
||
} _SEH2_FINALLY {
|
||
|
||
DebugUnwind( FatNotifyChangeDirectory );
|
||
|
||
FatReleaseFcb( IrpContext, Dcb );
|
||
|
||
//
|
||
// If the dir notify package is holding the Irp, we discard the
|
||
// the IrpContext.
|
||
//
|
||
|
||
if (CompleteRequest) {
|
||
|
||
FatCompleteRequest( IrpContext, FatNull, 0 );
|
||
}
|
||
|
||
DebugTrace(-1, Dbg, "FatNotifyChangeDirectory -> %08lx\n", Status);
|
||
} _SEH2_END;
|
||
|
||
return Status;
|
||
}
|
||
|