virtsnd_kctl_info(9)

📦 version 7.3.1, in nixpkgs unstable

✨ virtsnd_kctl_info ✨

okay so bestie, welcome to the virtsnd_kctl_info page — this one lives in section 9 of the Kernel API Manual and honestly? it's giving "small function, big responsibilities" 💅 she's the one who tells you all about a control element, and we love her for it.

🌸 NAME 🌸

virtsnd_kctl_info — returns information about the control. that's it, that's the whole job, and she does it flawlessly 🎀

🦋 SYNOPSIS 🦋

int virtsnd_kctl_info (struct snd_kcontrol *kcontrol , struct
       snd_ctl_elem_info *uinfo );

lowkey a whole function signature, but look at her go 🫶

💖 ARGUMENTS 💖

  • kcontrol — the ALSA control element. like, the actual control we're talking about, bestie 🎛️
  • uinfo — the element information. this is where the info goes ✨

⭐ CONTEXT ⭐

Process context. no weird interrupt energy here, you're chilling in process context and that's the vibe check she passes 👑

🔥 RETURN 🔥

  • 0 on success — slay, it worked 💅
  • -errno on failure — not the moment, but at least you know why 😭

🌈 SEE ALSO 🌈

okay so there's a whole friend group in the kernel file ./sound/virtio/virtio_kctl.c and you should absolutely meet them:

periodt, go read them too 🧚‍♀️

ngl bestie, if you're writing kernel code around virtio sound controls, this whole squad is required reading. no cap 💜

and that's the page!! 🍓 shoutout to the ./sound/virtio source, the version, and the October 2026 date — mwah, iconic, love that for us 💖🦋✨

📦 where this page comes from