windows-xp/Source/XPSP1/NT/base/fs/srv/smbioctl.c

/*++

Copyright (c) 1991  Microsoft Corporation

Module Name:

    smbctl.c

Abstract:

    This module implements the IoControl and FsControl SMBs.

    Transact2 Ioctl
    Nt Transaction Io Control

Author:

    Manny Weiser (mannyw) 10-Oct-91

Revision History:

--*/

#include "precomp.h"
#include "smbioctl.tmh"
#pragma hdrstop

NTSTATUS
ProcessOs2Ioctl (
    IN PWORK_CONTEXT WorkContext,
    IN USHORT Category,
    IN USHORT Function,
    IN PVOID Parameters,
    IN ULONG InputParameterCount,
    IN PULONG OutputParameterCount,
    IN PVOID Data,
    IN ULONG InputDataCount,
    IN ULONG MaxOutputData,
    IN PULONG OutputDataCount
    );

VOID SRVFASTCALL
RestartNtIoctl (
    IN PWORK_CONTEXT WorkContext
    );

#ifdef ALLOC_PRAGMA
#pragma alloc_text( PAGE, SrvSmbIoctl )
#pragma alloc_text( PAGE, SrvSmbIoctlSecondary )
#pragma alloc_text( PAGE, RestartNtIoctl )
#pragma alloc_text( PAGE, SrvSmbIoctl2 )
#pragma alloc_text( PAGE, SrvSmbFsctl )
#pragma alloc_text( PAGE, ProcessOs2Ioctl )
#endif


SMB_PROCESSOR_RETURN_TYPE
SrvSmbIoctl (
    SMB_PROCESSOR_PARAMETERS
    )

/*++

Routine Description:

    Processes a primary Ioctl SMB.

Arguments:

    SMB_PROCESSOR_PARAMETERS - See smbtypes.h for a description
        of the parameters to SMB processor routines.

Return Value:

    SMB_PROCESSOR_RETURN_TYPE - See smbtypes.h

--*/

{
    PREQ_IOCTL request;
    PRESP_IOCTL response;
    PSMB_HEADER header;
    NTSTATUS   status    = STATUS_SUCCESS;
    SMB_STATUS SmbStatus = SmbStatusInProgress;

    PSESSION session;
    PTREE_CONNECT treeConnect;
    PRFCB rfcb;

    CLONG parameterOffset;
    CLONG parameterCount;       // For input on this buffer
    CLONG maxParameterCount;    // For output
    CLONG totalParameterCount;  // For input
    CLONG parameterSize;        // Max of input and output parameter counts
    CLONG dataOffset;
    CLONG responseDataOffset;
    CLONG dataCount;            // For input on this buffer
    CLONG maxDataCount;         // For output
    CLONG totalDataCount;       // For input
    CLONG dataSize;             // Max of input and output data counts

    CLONG smbLength;
    CLONG numberOfPaddings = 0;

    PAGED_CODE( );
    if (WorkContext->PreviousSMB == EVENT_TYPE_SMB_LAST_EVENT)
        WorkContext->PreviousSMB = EVENT_TYPE_SMB_IOCTL;
    SrvWmiStartContext(WorkContext);

    request = (PREQ_IOCTL)WorkContext->RequestParameters;
    response = (PRESP_IOCTL)WorkContext->ResponseParameters;

    //
    // Since we do I/O from the SMB buffer, verify that the request and
    // response buffers are one and the same.
    //

    ASSERT( (PVOID)request == (PVOID)response );

    header = WorkContext->RequestHeader;

    IF_SMB_DEBUG(TRANSACTION1) {
        KdPrint(( "Ioctl (primary) request\n" ));
    }

    //
    // !!! Verify ioctl subcommand early?
    //

    parameterOffset = SmbGetUshort( &request->ParameterOffset );
    parameterCount = SmbGetUshort( &request->ParameterCount );
    maxParameterCount = SmbGetUshort( &request->MaxParameterCount );
    totalParameterCount = SmbGetUshort( &request->TotalParameterCount );
    dataOffset = SmbGetUshort( &request->DataOffset );
    dataCount = SmbGetUshort( &request->DataCount );
    maxDataCount = SmbGetUshort( &request->MaxDataCount );
    totalDataCount = SmbGetUshort( &request->TotalDataCount );

    smbLength = WorkContext->RequestBuffer->DataLength;

    dataSize = MAX( dataCount, maxDataCount );
    parameterSize = MAX( parameterCount, maxParameterCount );

    if ( parameterCount != 0 ) {
        responseDataOffset = parameterOffset + parameterSize;
    } else {

        //
        // Some ioctls requests have  data offset of zero like
        // category 0x53, function 0x60.  If this is the case,
        // calculate the dataoffset by hand.
        //

        if ( dataOffset != 0 ) {
            responseDataOffset = dataOffset;
        } else {
            responseDataOffset = (CLONG) ((PUCHAR) response->Buffer -
                           (PUCHAR) WorkContext->ResponseHeader);
            numberOfPaddings = ( responseDataOffset & 0x01 );
            responseDataOffset = responseDataOffset + numberOfPaddings;
        }
    }

    //
    // Verify the size of the smb buffer:
    //
    // Even though we know that WordCount and ByteCount are valid, it's
    // still possible that the offsets and lengths of the Parameter and
    // Data bytes are invalid.  So we check them now.
    //
    // We need room in the smb buffer for the response.  Ensure that
    // there is enough room.
    //
    // No ioctl secondary is expected.  Ensure that all data and
    // parameters have arrrived.
    //
    // Check that the response will fit in a single buffer.
    //

    if ( ( (parameterOffset + parameterCount) > smbLength ) ||
         ( (dataOffset + dataCount) > smbLength ) ||
         ( (responseDataOffset + dataCount) >
            WorkContext->ResponseBuffer->BufferLength ) ||

         ( dataCount != totalDataCount ) ||
         ( parameterCount != totalParameterCount ) ||

         ( (parameterOffset > dataOffset) && (dataCount != 0) ) ) {


        IF_DEBUG(SMB_ERRORS) {
            KdPrint(( "SrvSmbTransaction: Invalid parameter or data "
                      "offset+count: pOff=%ld,pCnt=%ld;",
                      parameterOffset, parameterCount ));
            KdPrint(( "dOff=%ld,dCnt=%ld;", dataOffset, dataCount ));
            KdPrint(( "smbLen=%ld", smbLength ));
        }

        SrvSetSmbError( WorkContext, STATUS_INVALID_SMB );
        status    = STATUS_INVALID_SMB;
        SmbStatus = SmbStatusSendResponse;
        goto Cleanup;
    }

    //
    // If a session block has not already been assigned to the current
    // work context, verify the UID.  If verified, the address of the
    // session block corresponding to this user is stored in the
    // WorkContext block and the session block is referenced.
    //
    // If a tree connect block has not already been assigned to the
    // current work context, find the tree connect corresponding to the
    // given TID.
    //

    status = SrvVerifyUidAndTid(
                WorkContext,
                &session,
                &treeConnect,
                ShareTypeWild
                );

    if ( !NT_SUCCESS(status) ) {
        IF_DEBUG(SMB_ERRORS) {
            KdPrint(( "SrvSmbIoctl: Invalid UID or TID\n" ));
        }
        SrvSetSmbError( WorkContext, status );
        SmbStatus = SmbStatusSendResponse;
        goto Cleanup;
    }

    if( session->IsSessionExpired )
    {
        status = SESSION_EXPIRED_STATUS_CODE;
        SrvSetSmbError( WorkContext, status );
        SmbStatus = SmbStatusSendResponse;
        goto Cleanup;
    }

    //
    // Verify the FID.  If verified, the RFCB block is referenced
    // and its addresses is stored in the WorkContext block, and the
    // RFCB address is returned.
    //

    rfcb = SrvVerifyFid(
                WorkContext,
                request->Fid,
                TRUE,
                SrvRestartSmbReceived,   // serialize with raw write
                &status
                );

    if ( rfcb == SRV_INVALID_RFCB_POINTER ) {

        if ( !NT_SUCCESS( status ) ) {

            //
            // Invalid file ID or write behind error.  Reject the request.
            //

            IF_DEBUG(ERRORS) {
                KdPrint((
                    "SrvSmbIoctl: Status %X on FID: 0x%lx\n",
                    request->Fid,
                    status
                    ));
            }

            SrvSetSmbError( WorkContext, status );
            SmbStatus = SmbStatusSendResponse;
            goto Cleanup;
        }

        //
        // The work item has been queued because a raw write is in
        // progress.
        //

        SmbStatus = SmbStatusInProgress;
        goto Cleanup;
    }

    //
    // Make room in the SMB buffer for return parameters by copying data
    //

    if ( dataOffset != responseDataOffset && dataCount != 0) {
        RtlMoveMemory(
            (PCHAR)header + responseDataOffset,
            (PCHAR)header + dataOffset,
            dataCount
            );
    }

    //
    // Process the ioctl.  The response will overwrite the request buffer.
    //

    status = ProcessOs2Ioctl(
                WorkContext,
                request->Category,
                request->Function,
                (PCHAR)WorkContext->RequestHeader + parameterOffset,
                totalParameterCount,
                &maxParameterCount,
                (PCHAR)WorkContext->RequestHeader + responseDataOffset,
                totalDataCount,
                WorkContext->ResponseBuffer->BufferLength -
                    PTR_DIFF(WorkContext->RequestHeader,
                             WorkContext->ResponseBuffer->Buffer) -
                    responseDataOffset,
                &maxDataCount
                );

    //
    // Format and send the response, the parameter and data bytes are
    // already in place.
    //

    if ( !NT_SUCCESS( status ) ) {
        SrvSetSmbError( WorkContext, status );
        SmbStatus = SmbStatusSendResponse;
        goto Cleanup;
    }

    response->WordCount = 8;
    SmbPutUshort( &response->TotalParameterCount, (USHORT)maxParameterCount );
    SmbPutUshort( &response->TotalDataCount, (USHORT)maxDataCount );
    SmbPutUshort( &response->ParameterCount, (USHORT)maxParameterCount );
    SmbPutUshort( &response->ParameterOffset, (USHORT)parameterOffset );
    SmbPutUshort( &response->ParameterDisplacement, 0);
    SmbPutUshort( &response->DataCount, (USHORT)maxDataCount );
    SmbPutUshort( &response->DataOffset, (USHORT)responseDataOffset );
    SmbPutUshort( &response->DataDisplacement, 0 );

    SmbPutUshort(
        &response->ByteCount,
        (USHORT)(maxDataCount + numberOfPaddings)
        );

    WorkContext->ResponseParameters = NEXT_LOCATION(
                                          response,
                                          RESP_IOCTL,
                                          maxDataCount + numberOfPaddings
                                          );

    SmbStatus = SmbStatusSendResponse;

Cleanup:
    SrvWmiEndContext(WorkContext);
    return SmbStatus;

} // SrvSmbIoctl


SMB_PROCESSOR_RETURN_TYPE
SrvSmbIoctlSecondary (
    SMB_PROCESSOR_PARAMETERS
    )

/*++

Routine Description:

    Processes a secondary Ioctl SMB.

Arguments:

    SMB_PROCESSOR_PARAMETERS - See smbtypes.h for a description
        of the parameters to SMB processor routines.

Return Value:

    SMB_PROCESSOR_RETURN_TYPE - See smbtypes.h

--*/

{
    PAGED_CODE( );

    //
    // This SMB is not supported.
    //

    SrvSetSmbError( WorkContext, STATUS_NOT_IMPLEMENTED );
    return SmbStatusSendResponse;
}


SMB_TRANS_STATUS
SrvSmbNtIoctl (
    SMB_PROCESSOR_PARAMETERS
    )

/*++

Routine Description:

    Processes a Nt Ioctl SMB.

Arguments:

    SMB_PROCESSOR_PARAMETERS - See smbprocs.h for a description
        of the parameters to SMB processor routines.

Return Value:

    SMB_PROCESSOR_RETURN_TYPE - See smbprocs.h

--*/

{
    NTSTATUS status;
    ULONG functionCode;
    USHORT fid;
    BOOLEAN isFsctl;

    PREQ_NT_IO_CONTROL request;

    PTRANSACTION transaction;
    PRFCB rfcb;
    PMDL mdl = NULL;

    transaction = WorkContext->Parameters.Transaction;

    request = (PREQ_NT_IO_CONTROL)transaction->InSetup;

    functionCode = SmbGetAlignedUlong( &request->FunctionCode );
    fid = SmbGetAlignedUshort( &request->Fid );
    isFsctl = request->IsFsctl;

    //
    // Verify the FID.  If verified, the RFCB block is referenced
    // and its addresses is stored in the WorkContext block, and the
    // RFCB address is returned.
    //

    rfcb = SrvVerifyFid(
                WorkContext,
                fid,
                TRUE,
                SrvRestartExecuteTransaction,   // serialize with raw write
                &status
                );

    if ( rfcb == SRV_INVALID_RFCB_POINTER ) {

        if ( !NT_SUCCESS( status ) ) {

            //
            // Invalid file ID or write behind error.  Reject the request.
            //

            IF_DEBUG(ERRORS) {
                KdPrint((
                    "SrvSmbNtIoctl: Status %X on FID: 0x%lx\n",
                    status,
                    fid
                    ));
            }

            SrvSetSmbError( WorkContext, status );
            return SmbTransStatusErrorWithoutData;

        }


        //
        // The work item has been queued because a raw write is in
        // progress.
        //

        return SmbTransStatusInProgress;

    }

    //
    // Only allow these fellows against disk files
    //
    if( rfcb->ShareType != ShareTypeDisk ) {
        SrvSetSmbError( WorkContext, STATUS_NOT_SUPPORTED );
        SrvCompleteExecuteTransaction( WorkContext, SmbTransStatusErrorWithoutData );
        return SmbTransStatusInProgress;
    }

    CHECK_FUNCTION_ACCESS(
        rfcb->GrantedAccess,
        (UCHAR)(isFsctl ? IRP_MJ_FILE_SYSTEM_CONTROL : IRP_MJ_DEVICE_CONTROL),
        0,
        functionCode,
        &status
        );

    if ( !NT_SUCCESS( status ) ) {
        SrvStatistics.GrantedAccessErrors++;
        SrvSetSmbError( WorkContext, status );
        return SmbTransStatusErrorWithoutData;
    }

    //
    // There are some functions which we cannot allow.  Weed them out here
    //
    switch( functionCode ) {
    case FSCTL_SET_REPARSE_POINT:

        //
        // If there's not enough data, or the structure is internally inconsistent --
        //  fail the request
        //
        status = STATUS_SUCCESS;

        if( transaction->DataCount == 0 ) {
            status = STATUS_INVALID_BUFFER_SIZE;

        } else if ( transaction->DataCount < REPARSE_DATA_BUFFER_HEADER_SIZE ||
            ((PREPARSE_DATA_BUFFER)transaction->InData)->ReparseDataLength >
            transaction->DataCount - FIELD_OFFSET( REPARSE_DATA_BUFFER, GenericReparseBuffer )
        ) {
            status = STATUS_IO_REPARSE_DATA_INVALID;
        }

        if( !NT_SUCCESS( status ) ) {
            SrvSetSmbError( WorkContext, status );
            SrvCompleteExecuteTransaction( WorkContext, SmbTransStatusErrorWithoutData );
            return SmbTransStatusInProgress;
        }

        //
        // Only an administrator is allowed to set generalized reparse points,
        //  otherwise it is too easy to escape the share.  This seems safer
        //  than a path check, and it also allows the administrator to point
        //  the reparse point to wherever s/he desires.
        //
        if( !SrvIsAdmin( WorkContext->Session->UserHandle ) ) {
            SrvSetSmbError( WorkContext, STATUS_ACCESS_DENIED );
            SrvCompleteExecuteTransaction( WorkContext, SmbTransStatusErrorWithoutData );
            return SmbTransStatusInProgress;
        }

        break;

    case FSCTL_SRV_ENUMERATE_SNAPSHOTS:
        {
            if( SrvProductTypeServer )
            {
                status = SrvSnapEnumerateSnapShots( WorkContext );
                if( !NT_SUCCESS(status) )
                {
                    SrvSetSmbError( WorkContext, status );
                    SrvCompleteExecuteTransaction( WorkContext, (status==STATUS_BUFFER_OVERFLOW)?SmbTransStatusErrorWithData:SmbTransStatusErrorWithoutData );
                }
                else
                {
                    SrvCompleteExecuteTransaction( WorkContext, SmbTransStatusSuccess );
                }
                return SmbTransStatusInProgress;
            }
            else
            {
                status = STATUS_NOT_IMPLEMENTED;
                SrvCompleteExecuteTransaction( WorkContext, SmbTransStatusErrorWithoutData );
                return SmbTransStatusInProgress;
            }
        }
        break;

    case FSCTL_REQUEST_OPLOCK_LEVEL_1:
    case FSCTL_REQUEST_OPLOCK_LEVEL_2:
    case FSCTL_REQUEST_BATCH_OPLOCK:
    case FSCTL_OPLOCK_BREAK_ACKNOWLEDGE:
    case FSCTL_OPBATCH_ACK_CLOSE_PENDING:
    case FSCTL_OPLOCK_BREAK_NOTIFY:
    case FSCTL_MOVE_FILE:
    case FSCTL_MARK_HANDLE:
    case FSCTL_QUERY_RETRIEVAL_POINTERS:
    case FSCTL_PIPE_ASSIGN_EVENT:
    case FSCTL_GET_VOLUME_BITMAP:
    case FSCTL_GET_NTFS_FILE_RECORD:

    // We don't support USN journal calls because they require a volume handle
    case FSCTL_READ_USN_JOURNAL:
    case FSCTL_CREATE_USN_JOURNAL:
    case FSCTL_QUERY_USN_JOURNAL:
    case FSCTL_DELETE_USN_JOURNAL:
        SrvSetSmbError( WorkContext, STATUS_NOT_SUPPORTED );
        SrvCompleteExecuteTransaction( WorkContext, SmbTransStatusErrorWithoutData );
        return SmbTransStatusInProgress;
    }

    if (functionCode == FSCTL_LMR_SET_LINK_TRACKING_INFORMATION) {

        // This is a FSCTL that is used for link tracking purposes. It is
        // an internal FSCTL issued by the I/O subsystem. Currently this
        // is being handled in the context of a worker thread. We need
        // to ensure that this arm of the code is only executed in the
        // context of a blocking thread.

        // Also note that the incoming structure will always be the 32-bit structure, even
        // from 64-bit machines.  All structures on the wire are 32-bit for backwards compatibility

        KIRQL        oldIrql;
        PRFCB        rfcbTarget = NULL;
        USHORT       TargetFid;
        PVOID        TargetHandle;
        ULONG        TargetInformationLength;
        ULONG        LinkTrackingInformationSize;

        if( transaction->DataCount < sizeof( REMOTE_LINK_TRACKING_INFORMATION32 ) ) {
            SrvSetSmbError( WorkContext, STATUS_INVALID_PARAMETER );
            SrvCompleteExecuteTransaction( WorkContext, SmbTransStatusErrorWithoutData );
            return SmbTransStatusInProgress;
        }

        TargetHandle = UlongToHandle( SmbGetUlong(
                           (PUCHAR)transaction->InData +
                           FIELD_OFFSET(
                               REMOTE_LINK_TRACKING_INFORMATION32,
                               TargetFileObject)) );

        TargetInformationLength = SmbGetUlong(
                                      (PUCHAR)transaction->InData +
                                      FIELD_OFFSET(
                                          REMOTE_LINK_TRACKING_INFORMATION32,
                                          TargetLinkTrackingInformationLength));

        LinkTrackingInformationSize = FIELD_OFFSET(
                                          FILE_TRACKING_INFORMATION32,
                                          ObjectInformation) +
                                          TargetInformationLength;

        //
        // Make sure the REMOTE_LINK_TRACKING_INFORMATION structure is reasonable
        //
        if( TargetInformationLength > transaction->DataCount ||
            LinkTrackingInformationSize > transaction->DataCount ) {

            SrvSetSmbError( WorkContext, STATUS_INVALID_PARAMETER );
            SrvCompleteExecuteTransaction( WorkContext, SmbTransStatusErrorWithoutData );
            return SmbTransStatusInProgress;
        }

        if (TargetHandle != NULL) {

            TargetFid = (USHORT)TargetHandle;

            //
            // Verify the FID.  This code is lifted from SrvVerifyFid2.
            //

            //
            // Acquire the spin lock that guards the connection's file table.
            //

            ACQUIRE_SPIN_LOCK( &WorkContext->Connection->SpinLock, &oldIrql );

            //
            // See if this is the cached rfcb
            //

            if ( WorkContext->Connection->CachedFid == (ULONG)TargetFid ) {

                rfcbTarget = WorkContext->Connection->CachedRfcb;

            } else {
                USHORT index;
                USHORT sequence;
                PTABLE_HEADER tableHeader;

                //
                // Verify that the FID is in range, is in use, and has the correct
                // sequence number.

                index = FID_INDEX( TargetFid );
                sequence = FID_SEQUENCE( TargetFid );
                tableHeader = &WorkContext->Connection->FileTable;

                if ( (index < (USHORT)tableHeader->TableSize) &&
                     (tableHeader->Table[index].Owner != NULL) &&
                     (tableHeader->Table[index].SequenceNumber == sequence) &&
                     (GET_BLOCK_STATE(tableHeader->Table[index].Owner) == BlockStateActive) ) {

                    rfcbTarget = tableHeader->Table[index].Owner;

                    //
                    // Cache the fid.
                    //

                    WorkContext->Connection->CachedRfcb = rfcbTarget;
                    WorkContext->Connection->CachedFid = (ULONG)TargetFid;

                }
            }

            RELEASE_SPIN_LOCK( &WorkContext->Connection->SpinLock, oldIrql );
        }

        if( rfcbTarget != NULL || TargetHandle == NULL ) {

            PFILE_TRACKING_INFORMATION pTrackingInformation;
            IO_STATUS_BLOCK   ioStatusBlock;

            // Since the data in the InData buffer is unaligned we need to allocate
            // a copy of the data that is aligned and copy the information over
            // before passing it on in the SetInformationCall
            // We also resize the buffer to the native structure on 64 bit (no change occurs on 32 bit)

            pTrackingInformation = ALLOCATE_HEAP( LinkTrackingInformationSize + sizeof(PVOID) - sizeof(ULONG), BlockTypeMisc );

            if (pTrackingInformation != NULL) {
                if (rfcbTarget != NULL) {
                    pTrackingInformation->DestinationFile =
                        rfcbTarget->Lfcb->FileHandle;
                } else {
                    pTrackingInformation->DestinationFile = NULL;
                }

                pTrackingInformation->ObjectInformationLength =
                    TargetInformationLength;

                RtlCopyMemory(
                    pTrackingInformation->ObjectInformation,
                    ((PUCHAR)transaction->InData +
                     FIELD_OFFSET(
                         REMOTE_LINK_TRACKING_INFORMATION,
                         TargetLinkTrackingInformationBuffer)),
                    TargetInformationLength);

                status = NtSetInformationFile(
                             rfcb->Lfcb->FileHandle,
                             &ioStatusBlock,
                             pTrackingInformation,
                             LinkTrackingInformationSize,
                             FileTrackingInformation);

                FREE_HEAP(pTrackingInformation);
            } else {
                status = STATUS_INSUFFICIENT_RESOURCES;
            }
        } else {
            status = STATUS_INVALID_PARAMETER;
        }

        if (!NT_SUCCESS(status)) {
            SrvSetSmbError( WorkContext, status );
            SrvCompleteExecuteTransaction(
                WorkContext,
                SmbTransStatusErrorWithoutData
                );
        } else {
            transaction->DataCount = 0;
            transaction->ParameterCount = 0;

            SrvCompleteExecuteTransaction(
                WorkContext,
                SmbTransStatusSuccess
                );
        }

        return SmbTransStatusInProgress;

    }

    //
    // Since we are doing ioctls to this file, it doesn't seem like it's
    //  a "normal" file.  We had better not cache its handle after the close.
    //  Specifically, remote setting of the file's compression state is
    //  not reflected to the directory entry until the file is closed.  And
    //  setting a file's compression state is done with an ioctl
    //
    rfcb->IsCacheable = FALSE;

    if (functionCode == FSCTL_SIS_COPYFILE) {

        //
        // This the single-instance store copy FSCTL. We need to modify
        // the file names, which are passed as share-relative names,
        // to be full NT paths.
        //

        PSI_COPYFILE copyFile;
        PSI_COPYFILE newCopyFile;
        ULONG bufferLength;
        PWCHAR source;
        ULONG sourceLength;
        PWCHAR dest;
        ULONG destLength;
        PSHARE share;
        PWCHAR prefix;
        ULONG prefixLength;
        PCHAR p;
        ULONG addSlashToSource;
        ULONG addSlashToDest;

        copyFile = (PSI_COPYFILE)transaction->InData;
        bufferLength = transaction->DataCount;

        if( bufferLength < sizeof( SI_COPYFILE ) ) {
            SrvSetSmbError( WorkContext, STATUS_INVALID_PARAMETER );
            SrvCompleteExecuteTransaction( WorkContext, SmbTransStatusErrorWithoutData );
            return SmbTransStatusInProgress;
        }

        //
        // Get the share-relative paths.
        //

        source = copyFile->FileNameBuffer;
        sourceLength = copyFile->SourceFileNameLength;
        dest = source + (sourceLength / sizeof(WCHAR));
        destLength = copyFile->DestinationFileNameLength;

        //
        // Verify that the input structure is reasonable.
        //

        if ( (sourceLength > bufferLength || sourceLength == 0 ) ||
             (destLength > bufferLength || destLength == 0 ) ||
             ((FIELD_OFFSET(SI_COPYFILE,FileNameBuffer) + sourceLength + destLength) > bufferLength) ||
             (*(source + (sourceLength/sizeof(WCHAR)-1)) != 0) ||
             (*(dest + (destLength/sizeof(WCHAR)-1)) != 0) ) {
            SrvSetSmbError( WorkContext, STATUS_INVALID_PARAMETER );
            return SmbTransStatusErrorWithoutData;
        }

        ASSERT( (FSCTL_SIS_COPYFILE & 3) == METHOD_BUFFERED );

        //
        // Get the NT path prefix for the share.
        //

        share = WorkContext->TreeConnect->Share;
        prefix = share->NtPathName.Buffer;
        prefixLength = share->NtPathName.Length;

        //
        // Make sure there is exactly one slash between the share prefix
        // and the paths in the request.
        //

        addSlashToSource = 0;
        addSlashToDest = 0;
        if ( IS_UNICODE_PATH_SEPARATOR(*(prefix + (prefixLength/sizeof(WCHAR)-1))) ) {
            if ( IS_UNICODE_PATH_SEPARATOR(*source) ) {
                source++;
                sourceLength -= sizeof(WCHAR);
            }
            if ( IS_UNICODE_PATH_SEPARATOR(*dest) ) {
                dest++;
                destLength -= sizeof(WCHAR);
            }
        } else {
            if ( !IS_UNICODE_PATH_SEPARATOR(*source) ) {
                addSlashToSource = sizeof(WCHAR);
            }
            if ( !IS_UNICODE_PATH_SEPARATOR(*dest) ) {
                addSlashToDest = sizeof(WCHAR);
            }
        }

        //
        // Allocate space for a new FSCTL command buffer.
        //

        bufferLength = FIELD_OFFSET(SI_COPYFILE,FileNameBuffer) +
                       prefixLength + addSlashToSource + sourceLength +
                       prefixLength + addSlashToSource + destLength;
        newCopyFile = ALLOCATE_HEAP( bufferLength, BlockTypeBuffer );

        if( newCopyFile == NULL ) {
           SrvSetSmbError( WorkContext, STATUS_INSUFF_SERVER_RESOURCES );
           return SmbTransStatusErrorWithoutData;
        }

        //
        // Initialize the FSCTL input buffer with the full NT path names.
        //

        newCopyFile->SourceFileNameLength = prefixLength + addSlashToSource + sourceLength;
        newCopyFile->DestinationFileNameLength = prefixLength + addSlashToDest + destLength;
        newCopyFile->Flags = copyFile->Flags;
        p = (PCHAR)newCopyFile->FileNameBuffer;
        RtlCopyMemory( p, prefix, prefixLength );
        p += prefixLength;
        if ( addSlashToSource != 0 ) {
            *(PWCHAR)p = UNICODE_DIR_SEPARATOR_CHAR;
            p += sizeof(WCHAR);
        }
        RtlCopyMemory( p, source, sourceLength );
        p += sourceLength;
        RtlCopyMemory( p, prefix, prefixLength );
        p += prefixLength;
        if ( addSlashToDest != 0 ) {
            *(PWCHAR)p = UNICODE_DIR_SEPARATOR_CHAR;
            p += sizeof(WCHAR);
        }
        RtlCopyMemory( p, dest, destLength );

        //
        // Modify the transaction to point to the new buffer and indicate
        // that the buffer should be freed when the transaction is done.
        // (Note that the original buffer was allocated as part of the
        // transaction block and doesn't need to be freed separately.)
        //

        transaction->InData = (PVOID)newCopyFile;
        transaction->OutData = (PVOID)newCopyFile;
        transaction->DataCount = bufferLength;
        transaction->OutputBufferCopied = TRUE;
        transaction->OutDataAllocated = TRUE;
    }

    switch( functionCode & 3 ) {
    case METHOD_IN_DIRECT:
    case METHOD_OUT_DIRECT:

        if( transaction->TotalDataCount ) {
            //
            // Need an mdl
            //
            status = STATUS_SUCCESS;

            mdl = IoAllocateMdl(
                      transaction->InData,
                      transaction->TotalDataCount,
                      FALSE,
                      FALSE,
                      NULL
                      );

            if ( mdl == NULL ) {
                status = STATUS_INSUFF_SERVER_RESOURCES;
            } else {

                //
                // Build the mdl
                //

                try {
                    MmProbeAndLockPages(
                        mdl,
                        KernelMode,
                        IoReadAccess
                        );
                } except( EXCEPTION_EXECUTE_HANDLER ) {
                    status = GetExceptionCode();
                    IoFreeMdl( mdl );
                    mdl = NULL;
                }
            }

            if( !NT_SUCCESS( status ) ) {
                SrvSetSmbError( WorkContext, status );
                return SmbTransStatusErrorWithoutData;
            }
        }
        break;

    case METHOD_NEITHER:
        //
        // We need to allocate the output buffer for this fsctl, because at
        //  this point both the input and output buffers point to the same
        //  region of memory.  This can't be guaranteed to work for METHOD_NEITHER
        //

        if( transaction->MaxDataCount ) {
            //
            // Let's not let the allocation get out of hand!
            //
            if( transaction->MaxDataCount > SrvMaxFsctlBufferSize ) {
                SrvSetSmbError( WorkContext, STATUS_INSUFF_SERVER_RESOURCES );
                return SmbTransStatusErrorWithoutData;
            }

            transaction->OutData = ALLOCATE_HEAP( transaction->MaxDataCount, BlockTypeBuffer );

            if( transaction->OutData == NULL ) {
               SrvSetSmbError( WorkContext, STATUS_INSUFF_SERVER_RESOURCES );
               return SmbTransStatusErrorWithoutData;
            }

            RtlZeroMemory( transaction->OutData, transaction->MaxDataCount );
            transaction->OutputBufferCopied = TRUE;
            transaction->OutDataAllocated = TRUE;
        }

        break;
    }

    //
    // Set the Restart Routine addresses in the work context block.
    //

    WorkContext->FsdRestartRoutine = SrvQueueWorkToFspAtDpcLevel;
    WorkContext->FspRestartRoutine = RestartNtIoctl;

    //
    // Build the IRP to start the I/O control.
    // Pass this request to the filesystem.
    //

    SrvBuildIoControlRequest(
        WorkContext->Irp,
        rfcb->Lfcb->FileObject,
        WorkContext,
        (UCHAR)(isFsctl ? IRP_MJ_FILE_SYSTEM_CONTROL : IRP_MJ_DEVICE_CONTROL),
        functionCode,
        transaction->InData,
        transaction->DataCount,
        transaction->OutData,
        transaction->MaxDataCount,
        mdl,
        NULL        // Completion routine
        );

    (VOID)IoCallDriver(
                IoGetRelatedDeviceObject(rfcb->Lfcb->FileObject ),
                WorkContext->Irp
                );

    //
    // The call was successfully started, return InProgress to the caller
    //

    return SmbTransStatusInProgress;

} // SrvSmbNtIoctl


VOID SRVFASTCALL
RestartNtIoctl (
    IN PWORK_CONTEXT WorkContext
    )

/*++

Routine Description:

    This function handles the completion of an NT Io control SMB.

Arguments:

    WorkContext - A pointer to a WORK_CONTEXT block.

Return Value:

    None.

--*/

{
    NTSTATUS status;
    ULONG length;
    PTRANSACTION transaction;

    PAGED_CODE( );

    //
    // Free the MDL if one was allocated.
    //

    if ( WorkContext->Irp->MdlAddress != NULL ) {
        MmUnlockPages( WorkContext->Irp->MdlAddress );
        IoFreeMdl( WorkContext->Irp->MdlAddress );
        WorkContext->Irp->MdlAddress = NULL;
    }

    //
    // If the Io Control request failed, set an error status in the response
    // header.
    //

    status = WorkContext->Irp->IoStatus.Status;

    if ( NT_ERROR(status) ) {

        IF_DEBUG(ERRORS) {
            KdPrint(( "RestartNtIoctl:  Io control failed: %X\n",
                        status ));
        }
        SrvSetSmbError( WorkContext, status );

        SrvCompleteExecuteTransaction(
            WorkContext,
            SmbTransStatusErrorWithoutData
            );

    } else {

        //
        // Success.  Prepare to generate and send the response.
        //

        transaction = WorkContext->Parameters.Transaction;

        length = MIN( (ULONG)WorkContext->Irp->IoStatus.Information, transaction->MaxDataCount );

        if ( transaction->MaxSetupCount > 0 ) {
            transaction->SetupCount = 1;
            SmbPutUshort( transaction->OutSetup, (USHORT)length );
        }

        transaction->ParameterCount = transaction->MaxParameterCount;
        transaction->DataCount = length;

        if (!NT_SUCCESS(status) ) {

            IF_DEBUG(ERRORS) {
                KdPrint(( "RestartNtIoctl:  Io control failed: %X\n",
                            status ));
            }
            SrvSetSmbError2( WorkContext, status, TRUE );

            SrvCompleteExecuteTransaction(
                            WorkContext,
                            SmbTransStatusErrorWithData
                            );
        } else {
            SrvCompleteExecuteTransaction(
                            WorkContext,
                            SmbTransStatusSuccess);
        }

    }

    return;

} // RestartNtIoctl


SMB_TRANS_STATUS
SrvSmbIoctl2 (
    IN OUT PWORK_CONTEXT WorkContext
    )
/*++

Routine Description:

    Processes the Ioctl request.  This request arrives in a Transaction2 SMB.

Arguments:

    WorkContext - Supplies the address of a Work Context Block
        describing the current request.  See smbtypes.h for a more
        complete description of the valid fields.

Return Value:

    SMB_TRANS_STATUS - Indicates whether an error occurred, and, if so,
        whether data should be returned to the client.  See smbtypes.h
        for a more complete description.

--*/

{
    NTSTATUS         status    = STATUS_SUCCESS;
    SMB_TRANS_STATUS SmbStatus = SmbTransStatusInProgress;
    PTRANSACTION transaction;
    PRFCB rfcb;

    PAGED_CODE( );
    if (WorkContext->PreviousSMB == EVENT_TYPE_SMB_LAST_EVENT)
        WorkContext->PreviousSMB = EVENT_TYPE_SMB_IOCTL2;
    SrvWmiStartContext(WorkContext);

    transaction = WorkContext->Parameters.Transaction;
    IF_SMB_DEBUG(TRANSACTION2) {
        KdPrint(( "Ioctl2 entered; transaction 0x%p\n",
                    transaction ));
    }

    //request = (PREQ_IOCTL2)transaction->InSetup;

    //
    // Verify the setup count.
    //

    if ( transaction->SetupCount != 4 * sizeof( USHORT ) ) {
        SrvSetSmbError( WorkContext, STATUS_INVALID_SMB );
        status    = STATUS_INVALID_SMB;
        SmbStatus = SmbTransStatusErrorWithoutData;
        goto Cleanup;
    }

    //
    // Verify the FID.  If verified, the RFCB block is referenced
    // and its addresses is stored in the WorkContext block, and the
    // RFCB address is returned.
    //

    rfcb = SrvVerifyFid(
                WorkContext,
                transaction->InSetup[1],
                TRUE,
                SrvRestartExecuteTransaction,   // serialize with raw write
                &status
                );

    if ( rfcb == SRV_INVALID_RFCB_POINTER ) {

        if ( !NT_SUCCESS( status ) ) {

            //
            // Invalid file ID or write behind error.  Reject the request.
            //

            IF_DEBUG(ERRORS) {
                KdPrint((
                    "SrvSmbIoctl2: Status %X on FID: 0x%lx\n",
                    transaction->InSetup[1],
                    status
                    ));
            }

            SrvSetSmbError( WorkContext, status );
            SmbStatus = SmbTransStatusErrorWithoutData;
            goto Cleanup;
        }

        //
        // The work item has been queued because a raw write is in
        // progress.
        //

        SmbStatus = SmbTransStatusInProgress;
        goto Cleanup;
    }

    transaction->Category = transaction->InSetup[2];
    transaction->Function = transaction->InSetup[3];

    //
    // Perform the Ioctl
    //

    status = ProcessOs2Ioctl(
                 WorkContext,
                 transaction->InSetup[2],
                 transaction->InSetup[3],
                 transaction->InParameters,
                 transaction->ParameterCount,
                 &transaction->MaxParameterCount,
                 transaction->OutData,
                 transaction->DataCount,
                 transaction->MaxDataCount,
                 &transaction->MaxDataCount
                 );

    //
    // If an error occurred, return an appropriate response.
    //

    if ( !NT_SUCCESS(status) ) {
        SrvSetSmbError( WorkContext, status );
        SmbStatus = SmbTransStatusErrorWithoutData;
        goto Cleanup;
    }

    transaction->SetupCount = 0;
    transaction->ParameterCount = transaction->MaxParameterCount;
    transaction->DataCount = transaction->MaxDataCount;
    SmbStatus = SmbTransStatusSuccess;
    IF_DEBUG(TRACE2) KdPrint(( "SrvSmbIoctl2 complete.\n" ));

Cleanup:
    SrvWmiEndContext(WorkContext);
    return SmbStatus;

} // SrvSmbIoctl2


SMB_TRANS_STATUS
SrvSmbFsctl (
    IN OUT PWORK_CONTEXT WorkContext
    )
{
    PAGED_CODE( );

    //
    // The OS/2 redirector never sends a remote FS control request.
    // If we get one, simply reply that we cannot handle it.
    //

    return SrvTransactionNotImplemented( WorkContext );

} // SrvSmbFsctl


#define SERIAL_DEVICE           0x1
#define PRINTER_DEVICE          0x5
#define GENERAL_DEVICE          0xB
#define SPOOLER_DEVICE          0x53

//
// Serial device functions supported
//

#define SET_BAUD_RATE          0x41
#define SET_LINE_CONTROL       0x42
#define SET_TRANSMIT_TIMEOUT   0x44
#define SET_BREAK_OFF          0x45
#define SET_MODEM_CONTROL      0x46
#define SET_BREAK_ON           0x4B
#define STOP_TRANSMIT          0x47
#define START_TRANSMIT         0x48
#define SET_DCB_INFORMATION    0x53
#define GET_BAUD_RATE          0x61
#define GET_LINE_CONTROL       0x62
#define GET_COMM_STATUS        0x64
#define GET_LINE_STATUS        0x65
#define GET_MODEM_OUTPUT       0x66
#define GET_MODEM_INPUT        0x67
#define GET_INQUEUE_COUNT      0x68
#define GET_OUTQUEUE_COUNT     0x69
#define GET_COMM_ERROR         0x6D
#define GET_COMM_EVENT         0x72
#define GET_DCB_INFORMATION    0x73

//
// Print device function supported.
//
// *** Note:  The OS/2 server supports 2 additional Ioctl functions.
//            ActivateFont (0x48) and QueryActiveFont (0x69).  Since these
//            were designed only to support IBM proplus printer from OS/2
//            and we can't correctly support these function, we don't.
//

#define GET_PRINTER_ID         0x60
#define GET_PRINTER_STATUS     0x66

#define OS2_STATUS_PRINTER_HAPPY 0x90

typedef struct _SMB_IOCTL_LINECONTROL {
    UCHAR DataBits;
    UCHAR Parity;
    UCHAR StopBits;
    UCHAR TransBreak;
} SMB_IOCTL_LINE_CONTROL, *PSMB_IOCTL_LINE_CONTROL;

typedef struct _SMB_IOCTL_BAUD_RATE {
    USHORT BaudRate;
} SMB_IOCTL_BAUD_RATE, *PSMB_IOCTL_BAUD_RATE;

typedef struct _SMB_IOCTL_DEVICE_CONTROL {
    USHORT WriteTimeout;
    USHORT ReadTimeout;
    UCHAR ControlHandShake;
    UCHAR FlowReplace;
    UCHAR Timeout;
    UCHAR ErrorReplacementChar;
    UCHAR BreakReplacementChar;
    UCHAR XonChar;
    UCHAR XoffChar;
} SMB_IOCTL_DEVICE_CONTROL, *PSMB_IOCTL_DEVICE_CONTROL;

typedef struct _SMB_IOCTL_COMM_ERROR {
    USHORT Error;
} SMB_IOCTL_COMM_ERROR, *PSMB_IOCTL_COMM_ERROR;

typedef struct _SMB_IOCTL_PRINTER_ID {
    USHORT JobId;
    UCHAR Buffer[1]; // server name and share name
} SMB_IOCTL_PRINTER_ID;

typedef SMB_IOCTL_PRINTER_ID SMB_UNALIGNED *PSMB_IOCTL_PRINTER_ID;

NTSTATUS
ProcessOs2Ioctl (
    IN PWORK_CONTEXT WorkContext,
    IN USHORT Category,
    IN USHORT Function,
    IN PVOID Parameters,
    IN ULONG InputParameterCount,
    IN OUT PULONG OutputParameterCount,
    IN PVOID Data,
    IN ULONG InputDataCount,
    IN ULONG MaxOutputData,
    IN OUT PULONG OutputDataCount
    )

/*++

Routine Description:

    This function handles an OS/2 ioctl.  It convert the Ioctl SMB data
    into an NT ioctl call, makes the call, and format the returned data
    into Ioctl SMB return data.

Arguments:

    WorkContext
    Category
    Function
    Parameters
    InputParameterCount
    OutputParameterCount
    Data
    InputDataCount
    OutputDataCount

Return Value:

    NTSTATUS

--*/

{
    IO_STATUS_BLOCK ioStatusBlock;
    NTSTATUS status;
    PCHAR buffer;
    PLFCB lfcb = WorkContext->Rfcb->Lfcb;
    HANDLE Handle = lfcb->FileHandle;

    union NT_PARAMTERS {
        SERIAL_BAUD_RATE BaudRate;
        SERIAL_LINE_CONTROL LineControl;
        SERIAL_TIMEOUTS Timeouts;
        SERIAL_QUEUE_SIZE QueueSize;
        ULONG WaitMask;
        ULONG PurgeMask;
        UCHAR ImmediateChar;
        UCHAR Reserved[3];
        SERIAL_CHARS Chars;
        SERIAL_HANDFLOW Handflow;
        SERIAL_STATUS SerialStatus;
    } ntBuffer;

    union SMB_PARAMETERS {
        PSMB_IOCTL_BAUD_RATE BaudRate;
        PSMB_IOCTL_LINE_CONTROL LineControl;
        PSMB_IOCTL_DEVICE_CONTROL DeviceControl;
        PSMB_IOCTL_COMM_ERROR CommError;
        PSMB_IOCTL_PRINTER_ID PrinterId;
    } smbParameters, smbData;

    PAGED_CODE( );

    InputParameterCount, InputDataCount;

    switch ( Category ) {

    case SERIAL_DEVICE:
        switch ( Function )  {

        case GET_BAUD_RATE:
            if( MaxOutputData < sizeof( SMB_IOCTL_BAUD_RATE ) ) {
                status = STATUS_INVALID_SMB;
                break;
            }

            status = NtDeviceIoControlFile(
                         Handle,
                         0,
                         NULL,
                         NULL,
                         &ioStatusBlock,
                         IOCTL_SERIAL_GET_BAUD_RATE,
                         NULL,
                         0,
                         &ntBuffer,
                         sizeof( SERIAL_BAUD_RATE )
                         );

           //
           // Convert the response to OS/2 format.
           //
           // !!! ULONG to USHORT conversion.
           //

           smbData.BaudRate = (PSMB_IOCTL_BAUD_RATE)Data;

           if ( NT_SUCCESS( status ) ) {
               smbData.BaudRate->BaudRate = (USHORT) ntBuffer.BaudRate.BaudRate;

               *OutputParameterCount = 0;
               *OutputDataCount = sizeof( SMB_IOCTL_BAUD_RATE );
           }

           break;

        case SET_BAUD_RATE:

           //
           // Convert the request to NT format.
           //

           smbParameters.BaudRate =
               (PSMB_IOCTL_BAUD_RATE)Parameters;

           ntBuffer.BaudRate.BaudRate = smbParameters.BaudRate->BaudRate;

           status = NtDeviceIoControlFile(
                        Handle,
                        0,
                        NULL,
                        NULL,
                        &ioStatusBlock,
                        IOCTL_SERIAL_SET_BAUD_RATE,
                        &ntBuffer,
                        sizeof( SERIAL_BAUD_RATE ),
                        NULL,
                        0
                        );

            *OutputParameterCount = 0;
            *OutputDataCount = 0;

            break;

        case SET_LINE_CONTROL:

            //
            // Convert the request to NT format.
            //

            smbParameters.LineControl =
                (PSMB_IOCTL_LINE_CONTROL)Parameters;

            ntBuffer.LineControl.StopBits = smbParameters.LineControl->StopBits;
            ntBuffer.LineControl.Parity = smbParameters.LineControl->Parity;
            ntBuffer.LineControl.WordLength = smbParameters.LineControl->DataBits;

            // !!! What about TransmitBreak?

            status = NtDeviceIoControlFile(
                         Handle,
                         0,
                         NULL,
                         NULL,
                         &ioStatusBlock,
                         IOCTL_SERIAL_SET_LINE_CONTROL,
                         &ntBuffer,
                         sizeof( SERIAL_LINE_CONTROL ),
                         NULL,
                         0
                         );

             *OutputParameterCount = 0;
             *OutputDataCount = 0;

             break;

        case GET_LINE_CONTROL:

            if( MaxOutputData < sizeof( SMB_IOCTL_LINE_CONTROL ) ) {
                status = STATUS_INVALID_SMB;
                break;
            }

            smbData.LineControl = (PSMB_IOCTL_LINE_CONTROL)Data;

            status = NtDeviceIoControlFile(
                         Handle,
                         0,
                         NULL,
                         NULL,
                         &ioStatusBlock,
                         IOCTL_SERIAL_GET_LINE_CONTROL,
                         NULL,
                         0,
                         &ntBuffer,
                         sizeof( SERIAL_LINE_CONTROL )
                         );

            //
            // Convert the response to OS/2 format.
            //

            if ( NT_SUCCESS( status ) ) {
                smbData.LineControl->DataBits =  ntBuffer.LineControl.WordLength;
                smbData.LineControl->Parity =  ntBuffer.LineControl.Parity;
                smbData.LineControl->StopBits =  ntBuffer.LineControl.StopBits;
                smbData.LineControl->TransBreak = 0; // !!!

                *OutputParameterCount = 0;
                *OutputDataCount = sizeof( SMB_IOCTL_LINE_CONTROL );
            }

            break;

        case GET_DCB_INFORMATION:

            if( MaxOutputData < sizeof( SMB_IOCTL_DEVICE_CONTROL ) ) {
                status = STATUS_INVALID_SMB;
                break;
            }

           smbData.DeviceControl =
                (PSMB_IOCTL_DEVICE_CONTROL)Data;

            status = NtDeviceIoControlFile(
                         Handle,
                         0,
                         NULL,
                         NULL,
                         &ioStatusBlock,
                         IOCTL_SERIAL_GET_TIMEOUTS,
                         NULL,
                         0,
                         &ntBuffer,
                         sizeof( SERIAL_TIMEOUTS )
                         );

           //
           // Convert the response to OS/2 format.
           //

           // !!! Verify units are correct

           if ( NT_SUCCESS( status ) ) {
               smbData.DeviceControl->WriteTimeout = (USHORT)ntBuffer.Timeouts.ReadIntervalTimeout; // !!!
               smbData.DeviceControl->ReadTimeout = (USHORT)ntBuffer.Timeouts.ReadIntervalTimeout;
           } else {
               break;
           }

            status = NtDeviceIoControlFile(
                         Handle,
                         0,
                         NULL,
                         NULL,
                         &ioStatusBlock,
                         IOCTL_SERIAL_GET_TIMEOUTS,
                         NULL,
                         0,
                         &ntBuffer,
                         sizeof( SERIAL_TIMEOUTS )
                         );

           //
           // Convert the response to OS/2 format.
           //

           if ( NT_SUCCESS( status ) ) {
               smbData.DeviceControl->XonChar = ntBuffer.Chars.XonChar;
               smbData.DeviceControl->XoffChar = ntBuffer.Chars.XoffChar;
               smbData.DeviceControl->ErrorReplacementChar = ntBuffer.Chars.ErrorChar;
               smbData.DeviceControl->BreakReplacementChar = ntBuffer.Chars.BreakChar;
           } else {
               break;
           }

           smbData.DeviceControl->ControlHandShake = 0; // !!!
           smbData.DeviceControl->FlowReplace = 0; // !!!
           smbData.DeviceControl->Timeout = 0; // !!!

           *OutputParameterCount = 0;
           *OutputDataCount = sizeof( SMB_IOCTL_DEVICE_CONTROL );

           break;

        case SET_DCB_INFORMATION:

            //
            // Lie.  Pretend this succeeded.
            //

            status = STATUS_SUCCESS;

            *OutputParameterCount = 0;
            *OutputDataCount = 0;
            break;

        case GET_COMM_ERROR:

            //
            // Pretend that there is no comm error.
            //

            smbData.CommError = (PSMB_IOCTL_COMM_ERROR)Data;

            status = STATUS_SUCCESS;

            if ( NT_SUCCESS( status ) ) {
                smbData.CommError->Error = 0;

                *OutputParameterCount = 0;
                *OutputDataCount = sizeof( SMB_IOCTL_COMM_ERROR );
            }

            break;

        case SET_TRANSMIT_TIMEOUT:
        case SET_BREAK_OFF:
        case SET_MODEM_CONTROL:
        case SET_BREAK_ON:
        case STOP_TRANSMIT:
        case START_TRANSMIT:
        case GET_COMM_STATUS:
        case GET_LINE_STATUS:
        case GET_MODEM_OUTPUT:
        case GET_MODEM_INPUT:
        case GET_INQUEUE_COUNT:
        case GET_OUTQUEUE_COUNT:
        case GET_COMM_EVENT:
            status =  STATUS_NOT_IMPLEMENTED;
            break;

        default:
            status = STATUS_INVALID_PARAMETER;

        }

        break;


    case PRINTER_DEVICE:
        IF_SMB_DEBUG( TRANSACTION2 ) {
            KdPrint(( "ProcessOs2Ioctl: print IOCTL function %lx received.\n",
                       Function ));
        }

        switch ( Function )  {

        case GET_PRINTER_STATUS:

            *OutputParameterCount = 0;
            *OutputDataCount = 0;

            if ( *(PCHAR)Parameters != 0 ) {

                status = STATUS_INVALID_PARAMETER;

            } else {

                //
                // Always return STATUS_PRINTER_HAPPY
                //

                if( MaxOutputData < sizeof( CHAR ) ) {
                    status = STATUS_INVALID_SMB;
                } else {
                    *(PCHAR)Data = (CHAR)OS2_STATUS_PRINTER_HAPPY;

                    *OutputParameterCount = 0;
                    *OutputDataCount = sizeof( CHAR );
                    status = STATUS_SUCCESS;
                }
                break;
            }

        default:

            *OutputParameterCount = 0;
            *OutputDataCount = 0;
            status = STATUS_NOT_SUPPORTED;
        }

        status = STATUS_SUCCESS;
        *OutputParameterCount = 0;
        *OutputDataCount = 0;
        break;


    case SPOOLER_DEVICE:
        IF_SMB_DEBUG( TRANSACTION2 ) {
            KdPrint(( "ProcessOs2Ioctl: spool IOCTL function %lx received.\n",
                       Function ));
        }

        switch ( Function )  {

        case GET_PRINTER_ID:

            {
                PUNICODE_STRING shareName = &WorkContext->TreeConnect->Share->ShareName;
                OEM_STRING ansiShare;

                if( MaxOutputData < 2 * (LM20_CNLEN + 1) ) {
                    status = STATUS_INVALID_SMB;
                    break;
                }

                smbData.PrinterId = (PSMB_IOCTL_PRINTER_ID) Data;
                smbData.PrinterId->JobId = (USHORT)lfcb->JobId;

                buffer = (PCHAR)smbData.PrinterId->Buffer;

                if ( WorkContext->Connection->Endpoint->TransportAddress.Buffer != NULL ) {
                    RtlCopyMemory(
                            buffer,
                            WorkContext->Connection->Endpoint->TransportAddress.Buffer,
                            MIN(WorkContext->Connection->Endpoint->TransportAddress.Length+1,LM20_CNLEN)
                            );
                } else {
                    *buffer = '\0';
                }

                buffer += LM20_CNLEN;
                *buffer++ = '\0';

                status = RtlUnicodeStringToOemString(
                                    &ansiShare,
                                    shareName,
                                    TRUE
                                    );

                if ( NT_SUCCESS(status) ) {

                    if ( ansiShare.Length >= LM20_NNLEN ) {
                        RtlCopyMemory(
                                buffer,
                                ansiShare.Buffer,
                                LM20_NNLEN
                                );
                    } else {
                        RtlCopyMemory(
                                buffer,
                                ansiShare.Buffer,
                                ansiShare.Length + 1
                                );

                    }

                    RtlFreeAnsiString(&ansiShare);

                } else {

                    *buffer = '\0';

                }

                status = STATUS_SUCCESS;

                buffer += LM20_NNLEN;
                *buffer++ = '\0';

                *OutputParameterCount = 0;

                //
                // data length is equal to the job id +
                // the computer name + the share name + 1
                // I don't know what the last + 1 is for but OS/2
                // sends it.
                //

                *OutputDataCount = sizeof(USHORT) + LM20_CNLEN + 1 +
                                    LM20_NNLEN + 2;


            }

            break;


        default:

            *OutputParameterCount = 0;
            *OutputDataCount = 0;
            status = STATUS_NOT_SUPPORTED;

        }

        break;


    case GENERAL_DEVICE:
        status = STATUS_NOT_IMPLEMENTED;
        break;

    default:

        // for OS/2 1.x compatibility

        status = STATUS_SUCCESS;
        *OutputParameterCount = 0;
        *OutputDataCount = 0;
    }

    IF_SMB_DEBUG( TRANSACTION2 ) {

        KdPrint( (
            "Category %x, Function %x returns %lx\n",
            Category,
            Function,
            status
            ));
    }

    return status;

} // ProcessOs2Ioctl