snd_ctl_app...er_followers(9)

✨ snd_ctl_apply_vmaster_followers ✨

okay bestie, welcome to the Kernel API Manual 💅 this page is literally called snd_ctl_app...er_followers(9) (yes the title is truncated, no that's not a typo, the terminal just ran out of room 🫶) and it's all about running a function on every single follower of a vmaster kctl. sounds niche? it is. is it iconic? also yes 👑

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🌸 NAME 🌸

snd_ctl_apply_vmaster_followers — apply a function to each vmaster follower 💖

like, every follower gets the func treatment. no follower left behind, periodt.

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🦋 SYNOPSIS 🦋

int snd_ctl_apply_vmaster_followers (struct snd_kcontrol *kctl , int
       (*func)(struct snd_kcontrol *vfollower, struct snd_kcontrol *follower,
       void *arg) , void *arg );

that signature is lowkey a mouthful but we move 💀

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🎀 ARGUMENTS 🎀

• kctl — the vmaster kctl element 👑 this is the main character, the one whose followers we're about to go visit.
• func — the function to apply ✨ this is the callback that gets handed each follower (and it takes a vfollower, a follower, and your arg, iykyk).
• arg — optional function argument 🍓 totally up to you, it just gets passed straight through to func. no cap, it's optional.

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🌈 DESCRIPTION 🌈

Apply the function func to each follower kctl of the given vmaster kctl 🦋

that's it, that's the whole vibe. the vmaster is the group chat admin and func is the message that gets DM'd to every follower in the server 💌

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🔥 RETURN 🔥

0 if successful, or a negative error code 😭 so like, zero means slay, negative means something went sideways ngl.

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💜 SEE ALSO 💜

• Kernel file ./sound/core/vmaster.c 👀 (yes, the actual source, go read it)
• snd_ctl_add_followers(9)
• snd_ctl_make_virtual_master(9)
• snd_ctl_add_vmaster_hook(9)
• snd_ctl_sync_vmaster(9)

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bestie reminder: this is kernel API, so please don't just vibe-code with it 🙈 read the source, respect the error codes, and remember that 0 is the good ending ⭐

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and that's the whole page 💖 straight from ./sound/core, dated October 2026 — the manpage itself is literally titled snd_ctl_app...er_followers(9) because even the manpage title ran out of characters 😭 mwah, go forth and apply functions to followers 🧚‍♀️