BUS_GENERIC_READ_IVAR(9)

okay bestie, we're in the Kernel Developer's Manual today and the page is BUS_GENERIC_READ_IVAR(9) — plus its sibling BUS_GENERIC_WRITE_IVAR — and honestly? It's the shortest read ever. Let's go 🎀

✨ NAME ✨

bus_generic_read_ivar, bus_generic_write_ivar — the generic implementation of BUS_READ_IVAR and BUS_WRITE_IVAR for buses 💅

🌸 SYNOPSIS 🌸

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

int
bus_generic_read_ivar(device_t dev, device_t child, int index,
    uintptr_t *result);

int
bus_generic_write_ivar(device_t dev, device_t child, int index,
    uintptr_t value);

🦋 DESCRIPTION 🦋

Okay so this is going to be the fastest description section you've ever read in your life, no cap:

These functions simply return ENOENT.

That's it. That's the whole vibe. They don't read anything, they don't write anything, they just hand you ENOENT and go about their day 💀 Like… iconic? Unbothered? Main character energy fr fr.

bus_generic_read_ivar takes dev, child, index and a uintptr_t *result, bus_generic_write_ivar takes dev, child, index and a uintptr_t value — and both of them return ENOENT regardless. Periodt.

not me expecting lore and getting ENOENT 😭 bestie this is literally the whole function

🔥 SEE ALSO 🔥

• device(9)
• driver(9)

go read those if you want actual substance, iykyk 🫶

👑 AUTHORS 👑

This manual page was written by Doug Rabson. Shoutout Doug, king behaviour 🌈⭐

and that's the whole page, bestie — no crumbs left behind 🍓 This was the BUS_GENERIC_READ_IVAR(9) page from the Kernel Developer's Manual, Debian flavoured, dated January 15, 2017. mwah 💋🧚💜