usb_copy_descriptors(9)

💖 usb_copy_descriptors(9) — Kernel API Manual 💖

okay so bestie, welcome to usb_copy_descriptors(9) from the Kernel API Manual ✨ this one is lowkey iconic: it copies a vector of USB descriptors. let’s get into it 🫶

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🌸 NAME 🌸

usb_copy_descriptors — copy a vector of USB descriptors 💅

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✨ SYNOPSIS ✨

struct usb_descriptor_header ** usb_copy_descriptors (struct
usb_descriptor_header **src );

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🎀 ARGUMENTS 🎀

• src — the null-terminated vector to copy. that’s it, that’s the whole argument, and she ate 💖

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😴 CONTEXT 😴

This is initialization code, which may sleep 😴 so picture it in setup era, not in some frantic hot path. it’s giving “we have time, let the kernel breathe” energy 🧚

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🔥 DESCRIPTION 🔥

This makes a copy of a vector of USB descriptors. periodt. Its primary use is to support usb_function objects which can have multiple copies, each needing different descriptors. Functions may have static tables of descriptors, which are used as templates and customized with identifiers (for interfaces, strings, endpoints, and more) as needed by a given function instance. no cap — that’s the whole vibe: static tables are the templates, and the identifiers get customized per function instance as needed ✨

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🦋 SEE ALSO 🦋

• Kernel file ./drivers/usb/gadget/config.c
• usb_descriptor_fillbuf(9)

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mwah 💋 this page is from ./drivers/usb/gadget, dated October 2026, and it’s the usb_copy_descriptors(9) manual — slay, bye 👑