snd_ctl_register_ioctl(9)

📦 version 7.3.1, in nixpkgs unstable

💖 snd_ctl_register_ioctl(9) 💖

okay bestie, welcome to the snd_ctl_register_ioctl page from the Kernel API Manual — yes it's a section 9 man page, yes it's giving kernel-internals realness, and yes we're gonna get through it together 🫶

✨ NAME ✨

snd_ctl_register_ioctl — registers the device-specific control-ioctls 💅

🌸 SYNOPSIS 🌸

int snd_ctl_register_ioctl (snd_kctl_ioctl_func_t fcn );

🦋 ARGUMENTS 🦋

  • fcn — the ioctl callback function 🎀 like, this is the function pointer you're handing over, no cap

💫 DESCRIPTION 💫

so basically this gets called from each device manager, like pcm.c, hwdep.c, etc. — every one of them pulls up and registers its own device-specific control-ioctls through this 🔥 that's the whole vibe, iykyk

⭐ RETURN ⭐

you get zero if it worked 😌✨ or a negative error code if it did not, and honestly? we respect the honesty 💀

👑 SEE ALSO 👑

the kernel file ./sound/core/control.c is right there in the mix, plus the whole friend group:

and that's the whole page, bestie, you ate that 🍓💜

source: ./sound/core 📁 and dated October 2026 🗓️ — slay, iconic, periodt 🌈👑

📦 where this page comes from