ioctl.c File Reference

#include "inport.h"
#include <debug.h>

Include dependency graph for ioctl.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
NTSTATUS NTAPI	InPortInternalDeviceControl (_In_ PDEVICE_OBJECT DeviceObject, _Inout_ PIRP Irp)

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 12 of file ioctl.c.

Function Documentation

InPortInternalDeviceControl()

NTSTATUS NTAPI InPortInternalDeviceControl	(	_In_ PDEVICE_OBJECT	DeviceObject,
		_Inout_ PIRP	Irp
	)

Definition at line 19 of file ioctl.c.

{
    NTSTATUS Status;
    PCONNECT_DATA ConnectData;
    PINPORT_DEVICE_EXTENSION DeviceExtension = DeviceObject->DeviceExtension;
    PIO_STACK_LOCATION IrpSp = IoGetCurrentIrpStackLocation(Irp);

    DPRINT("%s(%p, %p) 0x%X\n", __FUNCTION__, DeviceObject, Irp,
           IrpSp->Parameters.DeviceIoControl.IoControlCode);

    switch (IrpSp->Parameters.DeviceIoControl.IoControlCode)
    {
        case IOCTL_INTERNAL_MOUSE_CONNECT:
            if (IrpSp->Parameters.DeviceIoControl.InputBufferLength < sizeof(CONNECT_DATA))
            {
                Status = STATUS_INVALID_PARAMETER;
                break;
            }

            /* Already connected */
            if (DeviceExtension->ClassService)
            {
                Status = STATUS_SHARING_VIOLATION;
                break;
            }

            ConnectData = IrpSp->Parameters.DeviceIoControl.Type3InputBuffer;

            DeviceExtension->ClassDeviceObject = ConnectData->ClassDeviceObject;
            DeviceExtension->ClassService = ConnectData->ClassService;

            Status = STATUS_SUCCESS;
            break;

        case IOCTL_INTERNAL_MOUSE_DISCONNECT:
            DeviceExtension->ClassService = NULL;

            Status = STATUS_SUCCESS;
            break;

        case IOCTL_MOUSE_QUERY_ATTRIBUTES:
            if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(MOUSE_ATTRIBUTES))
            {
                Status = STATUS_BUFFER_TOO_SMALL;
                break;
            }

            *(PMOUSE_ATTRIBUTES)Irp->AssociatedIrp.SystemBuffer = DeviceExtension->MouseAttributes;
            Irp->IoStatus.Information = sizeof(MOUSE_ATTRIBUTES);

            Status = STATUS_SUCCESS;
            break;

        default:
            Status = STATUS_INVALID_DEVICE_REQUEST;
            break;
    }

    Irp->IoStatus.Status = Status;
    IoCompleteRequest(Irp, IO_NO_INCREMENT);

    return Status;
}

Referenced by DriverEntry().