USB Gadget API for Linux
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usb_descriptor_fillbuf

Name

usb_descriptor_fillbuf -- fill buffer with descriptors

Synopsis

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

Arguments

buf: Buffer to be filled
buflen: Size of buf
src: Array of descriptor pointers, terminated by null pointer.

Description

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.

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