Function loaderEvtIoDeviceControl

loader/windows/src/Queue.c:91–195

}

VOID
loaderEvtIoDeviceControl(
    _In_ WDFQUEUE Queue,
    _In_ WDFREQUEST Request,
    _In_ size_t OutputBufferLength,
    _In_ size_t InputBufferLength,
    _In_ ULONG IoControlCode)
/*++

Routine Description:

    This event is invoked when the framework receives IRP_MJ_DEVICE_CONTROL request.

Arguments:

    Queue -  Handle to the framework queue object that is associated with the
             I/O request.

    Request - Handle to a framework request object.

    OutputBufferLength - Size of the output buffer in bytes

    InputBufferLength - Size of the input buffer in bytes

    IoControlCode - I/O control code.

Return Value:

    VOID

--*/
{
    PVOID in = 0;
    PVOID out = 0;
    size_t in_size = 0;
    size_t out_size = 0;

    NTSTATUS status;

    TraceEvents(
        TRACE_LEVEL_INFORMATION,
        TRACE_QUEUE,
        "%!FUNC! Queue 0x%p, Request 0x%p OutputBufferLength %d "
        "InputBufferLength %d IoControlCode %d",
        Queue,
        Request,
        (int)OutputBufferLength,
        (int)InputBufferLength,
        IoControlCode);

    if (InputBufferLength != 0) {
        status = WdfRequestRetrieveInputBuffer(Request, InputBufferLength, &in, &in_size);

        if (!NT_SUCCESS(status)) {
            WdfRequestComplete(Request, STATUS_ACCESS_DENIED);
            return;
        }
    }