snd_ctl_new1(9)

📦 version 7.3.1, in nixpkgs unstable

💅 snd_ctl_new1(9) — it's giving "make me a control"

ok so first things first: this page lives in the Kernel API Manual, section 9, and the function is called snd_ctl_new1. Bestie, this is the glow-up factory for kernel sound controls — we're making a brand new control instance out of a template. Let's go ✨

🌸 SYNOPSIS 🌸

struct snd_kcontrol * snd_ctl_new1 (const struct snd_kcontrol_new
*ncontrol , void *private_data );

literally that's the whole signature, no cap 🫶

🎀 ARGUMENTS 🎀

  • ncontrol — the initialization record 💖 like, the blueprint, the mood board, the template you're copying from
  • private_data — the private data to set 👑 this is the little extra something that gets tucked into your new instance

🦋 DESCRIPTION 🦋

Okay so here's the tea ☕: snd_ctl_new1 allocates a new struct snd_kcontrol instance and initializes it from the given template ncontrol. Iconic. Obsessed.

Two default behaviors you need to know about, fr fr:

  • When the access field of ncontrol is 0, it's assumed as READWRITE access 💅 (so like, it can read and write, main character energy)
  • When the count field is 0, it's assumes as one 🌸 (yep, the original really does say "assumes" — we're keeping that, it's part of the vibe now 🙈)

⭐ RETURN ⭐

Returns the pointer of the newly generated instance 🔥 — or NULL on failure 😭 (which, respectfully, is the worst-case scenario, so check your return value bestie)

💜 SEE ALSO 💜

Kernel file ./sound/core/control.c, plus the whole control-API friend group 👑:

and that's the whole page, bestie 🧚 this lil gem comes from ./sound/core and it's dated October 2026 — go forth and make controls 💖✨🎀

📦 where this page comes from