IOCTL_USB_GET_NODE_INFORMATION IOCTL (usbioctl.h)
The IOCTL_USB_GET_NODE_INFORMATION I/O control request is used with the USB_NODE_INFORMATION structure to retrieve information about a parent device.
IOCTL_USB_GET_NODE_INFORMATION is a user-mode I/O control request. This request targets the USB hub device (GUID_DEVINTERFACE_USB_HUB).
Major code
Input buffer
On input, the AssociatedIrp.SystemBuffer member points to a USB_NODE_INFORMATION structure. On input, the NodeType member of this structure must indicate whether the parent device is a hub or a non-hub composite device.
Input buffer length
The size of a USB_NODE_INFORMATION structure.
Output buffer
On output, AssociatedIrp.SystemBuffer points to a USB_NODE_INFORMATION structure that holds information about the parent device.
Output buffer length
The size of a USB_NODE_INFORMATION structure.
Status block
The USB stack sets Irp->IoStatus.Status to STATUS_SUCCESS if the request is successful. Otherwise, the USB stack sets Status to the appropriate error condition, such as STATUS_INVALID_PARAMETER or STATUS_INSUFFICIENT_RESOURCES.
Requirements
| Requirement | Value |
|---|---|
| Header | usbioctl.h (include Usbioctl.h) |
See also
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