Ejemplo n.º 1
0
NTSTATUS
NtfsCommonQueryVolumeInfo (
    IN PIRP_CONTEXT IrpContext,
    IN PIRP Irp
    )

/*++

Routine Description:

    This is the common routine for query Volume Information called by both the
    fsd and fsp threads.

Arguments:

    Irp - Supplies the Irp to process

Return Value:

    NTSTATUS - The return status for the operation

--*/

{
    NTSTATUS Status;
    PIO_STACK_LOCATION IrpSp;
    PFILE_OBJECT FileObject;

    TYPE_OF_OPEN TypeOfOpen;
    PVCB Vcb;
    PFCB Fcb;
    PSCB Scb;
    PCCB Ccb;

    ULONG Length;
    FS_INFORMATION_CLASS FsInformationClass;
    PVOID Buffer;
    BOOLEAN AcquiredVcb = FALSE;

    ASSERT_IRP_CONTEXT( IrpContext );
    ASSERT_IRP( Irp );
    ASSERT( FlagOn( IrpContext->TopLevelIrpContext->State, IRP_CONTEXT_STATE_OWNS_TOP_LEVEL ));

    PAGED_CODE();

    //
    //  Get the current stack location
    //

    IrpSp = IoGetCurrentIrpStackLocation( Irp );

    DebugTrace( +1, Dbg, ("NtfsCommonQueryVolumeInfo...\n") );
    DebugTrace( 0, Dbg, ("IrpContext         = %08lx\n", IrpContext) );
    DebugTrace( 0, Dbg, ("Irp                = %08lx\n", Irp) );
    DebugTrace( 0, Dbg, ("Length             = %08lx\n", IrpSp->Parameters.QueryVolume.Length) );
    DebugTrace( 0, Dbg, ("FsInformationClass = %08lx\n", IrpSp->Parameters.QueryVolume.FsInformationClass) );
    DebugTrace( 0, Dbg, ("Buffer             = %08lx\n", Irp->AssociatedIrp.SystemBuffer) );

    //
    //  Reference our input parameters to make things easier
    //

    Length = IrpSp->Parameters.QueryVolume.Length;
    FsInformationClass = IrpSp->Parameters.QueryVolume.FsInformationClass;
    Buffer = Irp->AssociatedIrp.SystemBuffer;

    //
    //  Extract and decode the file object to get the Vcb, we don't really
    //  care what the type of open is.
    //

    FileObject = IrpSp->FileObject;
    TypeOfOpen = NtfsDecodeFileObject( IrpContext, FileObject, &Vcb, &Fcb, &Scb, &Ccb, TRUE );

    //
    //  Let's kill invalid vol. query requests.
    //

    if (UnopenedFileObject == TypeOfOpen) {

        DebugTrace( 0, Dbg2, ("Invalid file object for write\n") );
        DebugTrace( -1, Dbg2, ("NtfsCommonQueryVolume:  Exit -> %08lx\n", STATUS_INVALID_DEVICE_REQUEST) );

        NtfsCompleteRequest( IrpContext, Irp, STATUS_INVALID_DEVICE_REQUEST );
        return STATUS_INVALID_DEVICE_REQUEST;
    }

#ifdef __ND_NTFS_SECONDARY__

	if (!FlagOn( IrpContext->State, IRP_CONTEXT_STATE_WAIT )) {

		return NtfsPostRequest( IrpContext, Irp );
	}

#endif

    //
    //  Get the Vcb shared and raise if we can't wait for the resource.
    //  We're only using $Volume Scb for the query size calls because the info
    //  it gets is static and we only need to protect against dismount
    //  Doing this prevents a deadlock with commit extensions from mm which use
    //  this call. However for system files like the mft we always need the vcb to avoid deadlock
    //
                         
    if ((FsInformationClass != FileFsSizeInformation) || 
        (FlagOn( Scb->Fcb->FcbState, FCB_STATE_SYSTEM_FILE ))) {
        
        NtfsAcquireSharedVcb( IrpContext, Vcb, TRUE );
        AcquiredVcb = TRUE;
    } else {
        
        NtfsAcquireSharedScb( IrpContext, Scb );
    }

    try {

        //
        //  Make sure the volume is mounted.
        //

        if ((AcquiredVcb && !FlagOn( Vcb->VcbState, VCB_STATE_VOLUME_MOUNTED )) ||
            (!AcquiredVcb && FlagOn( Scb->ScbState, SCB_STATE_VOLUME_DISMOUNTED))) {
            
            Irp->IoStatus.Information = 0;
            Status = STATUS_VOLUME_DISMOUNTED;
            leave;
        }

#ifdef __ND_NTFS_SECONDARY__

		if(IoGetCurrentIrpStackLocation(Irp)->FileObject == NULL) {

			DebugTrace( 0, DEBUG_TRACE_ALL, ("IrpSp->FileObject is NULL, IrpSp->MajorFunction = %x, IrpSp->MinorFunction = %x\n", IrpSp->MajorFunction, IrpSp->MinorFunction) );
		}

		if (IS_SECONDARY_FILEOBJECT(IoGetCurrentIrpStackLocation(Irp)->FileObject)) {

			Status = NdNtfsSecondaryCommonQueryVolumeInfo( IrpContext, Irp );
			leave;
		}
#endif
        //
        //  Based on the information class we'll do different actions.  Each
        //  of the procedures that we're calling fills up the output buffer
        //  if possible and returns true if it successfully filled the buffer
        //  and false if it couldn't wait for any I/O to complete.
        //

        switch (FsInformationClass) {

        case FileFsVolumeInformation:

            Status = NtfsQueryFsVolumeInfo( IrpContext, Vcb, Buffer, &Length );
            break;

        case FileFsSizeInformation:

            Status = NtfsQueryFsSizeInfo( IrpContext, Vcb, Buffer, &Length );
            break;

        case FileFsDeviceInformation:

            Status = NtfsQueryFsDeviceInfo( IrpContext, Vcb, Buffer, &Length );
            break;

        case FileFsAttributeInformation:

            Status = NtfsQueryFsAttributeInfo( IrpContext, Vcb, Buffer, &Length );
            break;

        case FileFsControlInformation:

            Status = NtfsQueryFsControlInfo( IrpContext, Vcb, Buffer, &Length );
            break;

        case FileFsFullSizeInformation:
        
            Status = NtfsQueryFsFullSizeInfo( IrpContext, Vcb, Buffer, &Length );
            break;

        case FileFsObjectIdInformation:
        
            Status = NtfsQueryFsVolumeObjectIdInfo( IrpContext, Vcb, Buffer, &Length );
            break;

        default:

            Status = STATUS_INVALID_PARAMETER;
            break;
        }

        //
        //  Set the information field to the number of bytes actually filled in
        //

        Irp->IoStatus.Information = IrpSp->Parameters.QueryVolume.Length - Length;

        //
        //  Abort transaction on error by raising.
        //

        NtfsCleanupTransaction( IrpContext, Status, FALSE );

    } finally {

        DebugUnwind( NtfsCommonQueryVolumeInfo );

        if (AcquiredVcb) {
            NtfsReleaseVcb( IrpContext, Vcb );
        } else  {
            NtfsReleaseScb( IrpContext, Scb );
        }   

        DebugTrace( -1, Dbg, ("NtfsCommonQueryVolumeInfo -> %08lx\n", Status) );
    }

	if (Status != STATUS_SUCCESS && Status != STATUS_BUFFER_OVERFLOW)
		DebugTrace( 0, Dbg2, ("NtfsCommonQueryVolumeInfo %x, FsInformationClass = %d Vcb = %p\n", Status, FsInformationClass, IrpContext->Vcb) );

    NtfsCompleteRequest( IrpContext, Irp, Status );
    return Status;
}
Ejemplo n.º 2
0
NTSTATUS
NtfsCommonQueryVolumeInfo (
    IN PIRP_CONTEXT IrpContext,
    IN PIRP Irp
    )

/*++

Routine Description:

    This is the common routine for query Volume Information called by both the
    fsd and fsp threads.

Arguments:

    Irp - Supplies the Irp to process

Return Value:

    NTSTATUS - The return status for the operation

--*/

{
    NTSTATUS Status;
    PIO_STACK_LOCATION IrpSp;
    PFILE_OBJECT FileObject;

    TYPE_OF_OPEN TypeOfOpen;
    PVCB Vcb;
    PFCB Fcb;
    PSCB Scb;
    PCCB Ccb;

    ULONG Length;
    FS_INFORMATION_CLASS FsInformationClass;
    PVOID Buffer;

    ASSERT_IRP_CONTEXT( IrpContext );
    ASSERT_IRP( Irp );

    PAGED_CODE();

    //
    //  Get the current stack location
    //

    IrpSp = IoGetCurrentIrpStackLocation( Irp );

    DebugTrace( +1, Dbg, ("NtfsCommonQueryVolumeInfo...\n") );
    DebugTrace( 0, Dbg, ("IrpContext         = %08lx\n", IrpContext) );
    DebugTrace( 0, Dbg, ("Irp                = %08lx\n", Irp) );
    DebugTrace( 0, Dbg, ("Length             = %08lx\n", IrpSp->Parameters.QueryVolume.Length) );
    DebugTrace( 0, Dbg, ("FsInformationClass = %08lx\n", IrpSp->Parameters.QueryVolume.FsInformationClass) );
    DebugTrace( 0, Dbg, ("Buffer             = %08lx\n", Irp->AssociatedIrp.SystemBuffer) );

    //
    //  Reference our input parameters to make things easier
    //

    Length = IrpSp->Parameters.QueryVolume.Length;
    FsInformationClass = IrpSp->Parameters.QueryVolume.FsInformationClass;
    Buffer = Irp->AssociatedIrp.SystemBuffer;

    //
    //  Extract and decode the file object to get the Vcb, we don't really
    //  care what the type of open is.
    //

    FileObject = IrpSp->FileObject;
    TypeOfOpen = NtfsDecodeFileObject( IrpContext, FileObject, &Vcb, &Fcb, &Scb, &Ccb, TRUE );

    //
    //  We need exclusive access to the Vcb because we are going to verify
    //  it.  After we verify the vcb we'll convert our access to shared
    //

    NtfsAcquireSharedVcb( IrpContext, Vcb, FALSE );

    try {

        //
        //  Based on the information class we'll do different actions.  Each
        //  of the procedures that we're calling fills up the output buffer
        //  if possible and returns true if it successfully filled the buffer
        //  and false if it couldn't wait for any I/O to complete.
        //

        switch (FsInformationClass) {

        case FileFsVolumeInformation:

            Status = NtfsQueryFsVolumeInfo( IrpContext, Vcb, Buffer, &Length );
            break;

        case FileFsSizeInformation:

            Status = NtfsQueryFsSizeInfo( IrpContext, Vcb, Buffer, &Length );
            break;

        case FileFsDeviceInformation:

            Status = NtfsQueryFsDeviceInfo( IrpContext, Vcb, Buffer, &Length );
            break;

        case FileFsAttributeInformation:

            Status = NtfsQueryFsAttributeInfo( IrpContext, Vcb, Buffer, &Length );
            break;

#ifdef _CAIRO_
        case FileFsControlInformation:

            Status = NtfsQueryFsControlInfo( IrpContext, Vcb, Buffer, &Length );
            break;


        case FileFsQuotaQueryInformation:

            Status = NtfsFsQuotaQueryInfo( IrpContext, Vcb, Buffer, &Length );
            break;

#endif // _CAIRO_

        default:

            Status = STATUS_INVALID_PARAMETER;
            break;
        }

        //
        //  Set the information field to the number of bytes actually filled in
        //

        Irp->IoStatus.Information = IrpSp->Parameters.QueryVolume.Length - Length;

        //
        //  Abort transaction on error by raising.
        //

        NtfsCleanupTransaction( IrpContext, Status, FALSE );

    } finally {

        DebugUnwind( NtfsCommonQueryVolumeInfo );

        NtfsReleaseVcb( IrpContext, Vcb );

        if (!AbnormalTermination()) {

            NtfsCompleteRequest( &IrpContext, &Irp, Status );
        }

        DebugTrace( -1, Dbg, ("NtfsCommonQueryVolumeInfo -> %08lx\n", Status) );
    }

    return Status;
}