BUS_GENERIC_ATTACH(9)

💅 BUS_GENERIC_ATTACH 💅

okay so this is a page from the Kernel Developer's Manual — it's BUS_GENERIC_ATTACH(9), and bestie, if you're writing bus code, this one's about to be your new fave. It's the generic implementation of DEVICE_ATTACH for buses. iconic behavior, honestly.

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✨ SYNOPSIS ✨

the vibe check, in code:

#include <sys/param.h>
#include <sys/bus.h>

int
bus_generic_attach(device_t dev);

that's it. that's the whole thing. dev is a device_t, and it returns an int. slay.

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🦋 DESCRIPTION 🦋

so what does this actually do? this function hands you a ready-made implementation of the DEVICE_ATTACH(9) method — the kind of thing most bus code can just use instead of writing itself from scratch. no cap, it's a huge time-saver.

and what's the actual work? it simply calls device_probe_and_attach(9) for each child device attached to the bus. that's literally the whole personality. one job, does it well. main character energy but make it minimal. 💜

like — it's not out here doing extra. it's just: here are your children, go probe and attach each one. periodt.

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🌸 RETURN VALUES 🌸

• Zero — returned on success. 🎀
• otherwise — an appropriate error is returned. 😭 (so like, check that return value, bestie, don't just ignore it)

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🔥 SEE ALSO 🔥

go read these next, iykwup:

• device(9)
• driver(9)

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👑 AUTHORS 👑

This manual page was written by Doug Rabson. thank you Doug, king behavior fr fr 🫶

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and that's the page! this beauty came from Debian, dated January 15, 2017 — a little vintage moment, but the info's still iconic. 🌈⭐ bye bestie, go attach some devices 💖