NTSTATUS ClassWmiFireEvent	(	IN PDEVICE_OBJECT	DeviceObject,
		IN LPGUID	Guid,
		IN ULONG	InstanceIndex,
		IN ULONG	EventDataSize,
		IN PVOID	EventData
	)

Definition at line 718 of file classwmi.c.

Referenced by ClassNotifyFailurePredicted().

{

    ULONG sizeNeeded;
    PWNODE_SINGLE_INSTANCE event;
    NTSTATUS status;

    if (EventData == NULL)
    {
        EventDataSize = 0;
    }

    sizeNeeded = sizeof(WNODE_SINGLE_INSTANCE) + EventDataSize;

    event = ExAllocatePoolWithTag(NonPagedPool, sizeNeeded, CLASS_TAG_WMI);
    if (event != NULL)
    {
        event->WnodeHeader.Guid = *Guid;
        event->WnodeHeader.ProviderId = IoWMIDeviceObjectToProviderId(DeviceObject);
        event->WnodeHeader.BufferSize = sizeNeeded;
        event->WnodeHeader.Flags =  WNODE_FLAG_SINGLE_INSTANCE |
                                    WNODE_FLAG_EVENT_ITEM |
                                    WNODE_FLAG_STATIC_INSTANCE_NAMES;
        KeQuerySystemTime(&event->WnodeHeader.TimeStamp);

        event->InstanceIndex = InstanceIndex;
        event->SizeDataBlock = EventDataSize;
        event->DataBlockOffset = sizeof(WNODE_SINGLE_INSTANCE);
        if (EventData != NULL)
        {
            RtlCopyMemory( &event->VariableData, EventData, EventDataSize);
        }

        status = IoWMIWriteEvent(event);
        if (! NT_SUCCESS(status))
        {
            ExFreePool(event);
        }
    } else {
        status = STATUS_INSUFFICIENT_RESOURCES;
    }

    return(status);
} // end ClassWmiFireEvent()

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