Device Node Status Flags

The Device Node Status flags describe the status of a device.

The most important flags are:

DNF_MADEUP (0x00000001)

The device was created and is owned by the PnP Manager. It was not created by a bus driver.

DNF_DUPLICATE (0x00000002)

The device node is a duplicate of another enumerated device node.

DNF_HAL_NODE (0x00000004)

The device node is the root node created by the hardware abstraction layer (HAL).

DNF_REENUMERATE (0x00000008)

The device needs to be re-enumerated.

DNF_ENUMERATED (0x00000010)

The PDO for the device was exposed by its parent.

DNF_IDS_QUERIED (0x00000020)

The operating system should send IRP_MN_QUERY_ID requests to the device driver.

DNF_HAS_BOOT_CONFIG (0x00000040)

The device has resources assigned by the BIOS. The device is considered pseudo-started and needs to participate in rebalancing.

DNF_BOOT_CONFIG_RESERVED (0x00000080)

The boot resources of the device are reserved.

DNF_NO_RESOURCE_REQUIRED (0x00000100)

The device does not require resources.

DNF_RESOURCE_REQUIREMENTS_NEED_FILTERED (0x00000200)

The device's resource requirements list is a filtered list.

DNF_RESOURCE_REQUIREMENTS_CHANGED (0x00000400)

The device's resource requirements list has changed.

DNF_NON_STOPPED_REBALANCE (0x00000800)

The device can be restarted with new resources without being stopped.

DNF_LEGACY_DRIVER (0x00001000)

The device's controlling driver is a non-PnP driver.

DNF_HAS_PROBLEM (0x00002000)

The device has a problem and will be removed.

DNF_HAS_PRIVATE_PROBLEM (0x00004000)

The device reported PNP_DEVICE_FAILED without also reporting PNP_DEVICE_RESOURCE_REQUIREMENTS_CHANGED.

DNF_HARDWARE_VERIFICATION (0x00008000)

The device node has hardware verification.

DNF_DEVICE_GONE (0x00010000)

The device's PDO is no longer returned in an IRP_QUERY_RELATIONS request.

DNF_LEGACY_RESOURCE_DEVICENODE (0x00020000)

The device node was created for legacy resource allocation.

DNF_NEEDS_REBALANCE (0x00040000)

The device node has triggered rebalancing.

DNF_LOCKED_FOR_EJECT (0x00080000)

The device is being ejected or is related to a device that is being ejected.

DNF_DRIVER_BLOCKED (0x00100000)

One or more of the drivers for the device node have been blocked from loading.

DNF_CHILD_WITH_INVALID_ID (0x00200000)

One or more children of the device node have invalid IDs.

DNF_ASYNC_START_NOT_SUPPORTED (0x00400000)

The device does not support asynchronous starts.

DNF_ASYNC_ENUMERATION_NOT_SUPPORTED (0x00800000)

The device does not support asynchronous enumeration.

DNF_LOCKED_FOR_REBALANCE (0x01000000)

The device is locked for rebalancing.

DNF_UNINSTALLED (0x02000000)

An IRP_MN_QUERY_REMOVE_DEVICE request is in progress for the device.

DNF_NO_LOWER_DEVICE_FILTERS (0x04000000)

There is no Registry entry of the lower-device-filters type for the device.

DNF_NO_LOWER_CLASS_FILTERS (0x08000000)

There is no Registry entry of the lower-class-filters type for the device.

DNF_NO_SERVICE (0x10000000)

There is no Registry entry of the service the for the device.

DNF_NO_UPPER_DEVICE_FILTERS (0x20000000)

There is no Registry entry of the upper-device-filters type for the device.

DNF_NO_UPPER_CLASS_FILTERS (0x40000000)

There is no Registry entry of the upper-class-filters type for the device.

DNF_WAITING_FOR_FDO (0x80000000)

Enumeration of the device is waiting until the driver attaches its FDO.

 

 

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