libusb Developers Guide
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# usb_claim_interface

## Name

usb_claim_interface -- Claim an interface of a device

## Description

``int usb_claim_interface` (usb_dev_handle *dev); int interface);`

`usb_claim_interface` claims the interface with the Operating System. The interface parameter is the value as specified in the descriptor field bInterfaceNumber. Returns 0 on success or 0 on error.

> Must be called!: `usb_claim_interface` must be called before you perform any operations related to this interface (like , , etc).

Table 1. Return Codes

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