mavioctl.c

基于EP7312的MP3播放器源代码,包括MCU和PC端代码.

    {
        //
        // Make sure that the correct amount of data was returned.
        //
        if(urb->UrbControlVendorClassRequest.TransferBufferLength != 8)
        {
            //
            // The wrong amount of data was returned, so return a device error.
            //
            ntStatus = STATUS_DEVICE_DATA_ERROR;
        }
        else
        {
            //
            // Get the return code.
            //
            *result = ((ULONG *)buffer)[0];

            //
            // Get the modification date/time.
            //
            pOut->ulDate = ((ULONG *)buffer)[1];
        }
    }

    //
    // Return the result.
    //
    return(ntStatus);
}

//****************************************************************************
//
// Handles the "close" request IOCTL.
//
//****************************************************************************
NTSTATUS
MavUsb_VendorClose(IN PDEVICE_OBJECT DeviceObject, IN PURB urb, PUCHAR buffer,
                   PULONG result)
{
    NTSTATUS ntStatus;

    //
    // Send the "close" vendor request.
    //
    ntStatus = MavUsb_SendVendorCommand(DeviceObject, urb, 0, USB_Vendor_Close,
                                        0, 0, buffer, 4);

    //
    // If the vendor packet was sent successfully, then return the result.
    //
    if(NT_SUCCESS(ntStatus))
    {
        //
        // Make sure that the correct amount of data was returned.
        //
        if(urb->UrbControlVendorClassRequest.TransferBufferLength != 4)
        {
            //
            // The wrong amount of data was returned, so return a device error.
            //
            ntStatus = STATUS_DEVICE_DATA_ERROR;
        }
        else
        {
            //
            // Get the return code.
            //
            *result = ((ULONG *)buffer)[0];
        }
    }

    //
    // Return the result.
    //
    return(ntStatus);
}

//****************************************************************************
//
// Handles the "delete" request IOCTL.
//
//****************************************************************************
NTSTATUS
MavUsb_VendorDelete(IN PDEVICE_OBJECT DeviceObject, IN PURB urb, PUCHAR buffer,
                    MavUsb_DeleteParams *pIn, PULONG result)
{
    NTSTATUS ntStatus;

    //
    // Send the file name.
    //
    ntStatus = MavUsb_BulkXfer(DeviceObject, (char *)pIn->pusFileName, 256,
                               FALSE);
    if(!NT_SUCCESS(ntStatus))
    {
        return(ntStatus);
    }

    //
    // Send the "delete" vendor request.
    //
    ntStatus = MavUsb_SendVendorCommand(DeviceObject, urb, pIn->ulDriveNum,
                                        USB_Vendor_Delete, 0, 0, buffer, 4);

    //
    // If the vendor packet was sent successfully, then return the result.
    //
    if(NT_SUCCESS(ntStatus))
    {
        //
        // Make sure that the correct amount of data was returned.
        //
        if(urb->UrbControlVendorClassRequest.TransferBufferLength != 4)
        {
            //
            // The wrong amount of data was returned, so return a device error.
            //
            ntStatus = STATUS_DEVICE_DATA_ERROR;
        }
        else
        {
            //
            // Get the return code.
            //
            *result = ((ULONG *)buffer)[0];
        }
    }

    //
    // Return the result.
    //
    return(ntStatus);
}

//****************************************************************************
//
// Handles the "opendir" request IOCTL.
//
//****************************************************************************
NTSTATUS
MavUsb_VendorOpenDir(IN PDEVICE_OBJECT DeviceObject, IN PURB urb,
                     PUCHAR buffer, MavUsb_OpenDirParams *pIn, PULONG result)
{
    NTSTATUS ntStatus;

    //
    // Send the directory name.
    //
    ntStatus = MavUsb_BulkXfer(DeviceObject, (char *)pIn->pusDirName, 256,
                               FALSE);
    if(!NT_SUCCESS(ntStatus))
    {
        return(ntStatus);
    }

    //
    // Send the "open_dir" vendor request.
    //
    ntStatus = MavUsb_SendVendorCommand(DeviceObject, urb, pIn->ulDriveNum,
                                        USB_Vendor_OpenDir, 0, 0, buffer, 4);

    //
    // If the vendor packet was sent successfully, then return the result.
    //
    if(NT_SUCCESS(ntStatus))
    {
        //
        // Make sure that the correct amount of data was returned.
        //
        if(urb->UrbControlVendorClassRequest.TransferBufferLength != 4)
        {
            //
            // The wrong amount of data was returned, so return a device error.
            //
            ntStatus = STATUS_DEVICE_DATA_ERROR;
        }
        else
        {
            //
            // Get the return code.
            //
            *result = ((ULONG *)buffer)[0];
        }
    }

    //
    // Return the result.
    //
    return(ntStatus);
}

//****************************************************************************
//
// Handles the "readdir" request IOCTL.
//
//****************************************************************************
NTSTATUS
MavUsb_VendorReadDir(IN PDEVICE_OBJECT DeviceObject, IN PURB urb,
                     PUCHAR buffer, MavUsb_ReadDirParams *pIn,
                     MavUsb_ReadDirResult *pOut, PULONG result)
{
    NTSTATUS ntStatus;

    //
    // Send the "read_dir" vendor request.
    //
    ntStatus = MavUsb_SendVendorCommand(DeviceObject, urb, 0,
                                        USB_Vendor_ReadDir,
                                        (USHORT)pIn->ulType, 0, buffer, 4);

    //
    // If the vendor packet was sent successfully, then return the result.
    //
    if(NT_SUCCESS(ntStatus))
    {
        //
        // Make sure that the correct amount of data was returned.
        //
        if(urb->UrbControlVendorClassRequest.TransferBufferLength != 4)
        {
            //
            // The wrong amount of data was returned, so return a device error.
            //
            ntStatus = STATUS_DEVICE_DATA_ERROR;
        }
        else
        {
            //
            // Get the return code.
            //
            *result = ((ULONG *)buffer)[0];

            //
            // Read the file name.
            //
            if(*result)
            {
                ntStatus = MavUsb_BulkXfer(DeviceObject, (char *)pOut->pusName,
                                           256, TRUE);
            }
        }
    }

    //
    // Return the result.
    //
    return(ntStatus);
}

//****************************************************************************
//
// Handles the "closedir" request IOCTL.
//
//****************************************************************************
NTSTATUS
MavUsb_VendorCloseDir(IN PDEVICE_OBJECT DeviceObject, IN PURB urb,
                      PUCHAR buffer, PULONG result)
{
    NTSTATUS ntStatus;

    //
    // Send the "closedir" vendor request.
    //
    ntStatus = MavUsb_SendVendorCommand(DeviceObject, urb, 0,
                                        USB_Vendor_CloseDir, 0, 0, buffer, 4);

    //
    // If the vendor packet was sent successfully, then return the result.
    //
    if(NT_SUCCESS(ntStatus))
    {
        //
        // Make sure that the correct amount of data was returned.
        //
        if(urb->UrbControlVendorClassRequest.TransferBufferLength != 4)
        {
            //
            // The wrong amount of data was returned, so return a device error.
            //
            ntStatus = STATUS_DEVICE_DATA_ERROR;
        }
        else
        {
            //
            // Get the return code.
            //
            *result = ((ULONG *)buffer)[0];
        }
    }

    //
    // Return the result.
    //
    return(ntStatus);
}

//****************************************************************************
//
// Handles the "makedir" request IOCTL.
//
//****************************************************************************
NTSTATUS
MavUsb_VendorMakeDir(IN PDEVICE_OBJECT DeviceObject, IN PURB urb,
                     PUCHAR buffer, MavUsb_MakeDirParams *pIn, PULONG result)
{
    NTSTATUS ntStatus;

    //
    // Send the directory name.
    //
    ntStatus = MavUsb_BulkXfer(DeviceObject, (char *)pIn->pusDirName, 256,
                               FALSE);
    if(!NT_SUCCESS(ntStatus))
    {
        return(ntStatus);
    }

    //
    // Send the "make_dir" vendor request.
    //
    ntStatus = MavUsb_SendVendorCommand(DeviceObject, urb, pIn->ulDriveNum,
                                        USB_Vendor_MakeDir, 0, 0, buffer, 4);

    //
    // If the vendor packet was sent successfully, then return the result.
    //
    if(NT_SUCCESS(ntStatus))
    {
        //
        // Make sure that the correct amount of data was returned.
        //
        if(urb->UrbControlVendorClassRequest.TransferBufferLength != 4)
        {
            //
            // The wrong amount of data was returned, so return a device error.
            //
            ntStatus = STATUS_DEVICE_DATA_ERROR;
        }
        else
        {
            //
            // Get the return code.
            //
            *result = ((ULONG *)buffer)[0];
        }
    }

    //
    // Return the result.
    //
    return(ntStatus);
}

//****************************************************************************
//
// Handles the "removedir" request IOCTL.
//
//****************************************************************************
NTSTATUS
MavUsb_VendorRemoveDir(IN PDEVICE_OBJECT DeviceObject, IN PURB urb,
                       PUCHAR buffer, MavUsb_RemoveDirParams *pIn,
                       PULONG result)
{
    NTSTATUS ntStatus;

    //
    // Send the directory name.
    //
    ntStatus = MavUsb_BulkXfer(DeviceObject, (char *)pIn->pusDirName, 256,
                               FALSE);
    if(!NT_SUCCESS(ntStatus))
    {
        return(ntStatus);
    }

    //
    // Send the "remove_dir" vendor request.
    //
    ntStatus = MavUsb_SendVendorCommand(DeviceObject, urb, pIn->ulDriveNum,
                                        USB_Vendor_RemoveDir, 0, 0, buffer, 4);

    //
    // If the vendor packet was sent successfully, then return the result.
    //
    if(NT_SUCCESS(ntStatus))
    {
        //
        // Make sure that the correct amount of data was returned.
        //
        if(urb->UrbControlVendorClassRequest.TransferBufferLength != 4)
        {
            //
            // The wrong amount of data was returned, so return a device error.
            //
            ntStatus = STATUS_DEVICE_DATA_ERROR;
        }
        else
        {
            //
            // Get the return code.
            //
            *result = ((ULONG *)buffer)[0];
        }
    }

    //
    // Return the result.
    //
    return(ntStatus);
}

//****************************************************************************
//
// Handles the "total space" request IOCTL.
//
//****************************************************************************
NTSTATUS
MavUsb_VendorTotalSpace(IN PDEVICE_OBJECT DeviceObject, IN PURB urb,
                        PUCHAR buffer, MavUsb_TotalSpaceParams *pIn,
                        MavUsb_TotalSpaceResult *pOut, PULONG result)
{
    NTSTATUS ntStatus;

    //
    // Send the "total_space" vendor request.
    //
    ntStatus = MavUsb_SendVendorCommand(DeviceObject, urb, pIn->ulDriveNum,
                                        USB_Vendor_TotalSpace, 0, 0, buffer,
                                        8);

    //
    // If the vendor packet was sent successfully, then return the result.
    //
    if(NT_SUCCESS(ntStatus))
    {
        //
        // Make sure that the correct amount of data was returned.
        //
        if(urb->UrbControlVendorClassRequest.TransferBufferLength != 8)
        {
            //
            // The wrong amount of data was returned, so return a device error.
            //
            ntStatus = STATUS_DEVICE_DATA_ERROR;
        }
        else
        {
            //
            // Get the return code.
            //
            *result = ((ULONG *)buffer)[0];

            //
            // Get the total space.
            //
            pOut->ulBytes = ((ULONG *)buffer)[1];
        }
    }

    //
    // Return the result.
    //
    return(ntStatus);
}

//****************************************************************************
//
// Handles the "free space" request IOCTL.