usb_descriptor_fillbuf (9)

int usb_descriptor_fillbuf(void * buf, unsigned buflen, const struct usb_descriptor_header ** src);

buf

Buffer to be filled

buflen

Size of buf

src

Array of descriptor pointers, terminated by null pointer.

Copies descriptors into the buffer, returning the length or a negative error code if they can't all be copied. Useful when assembling descriptors for an associated set of interfaces used as part of configuring a composite device; or in other cases where sets of descriptors need to be marshaled.

David Brownell <[email protected]>

Author.