ipc_set_key_private(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ipc_set_key_private(9) 💅

okay so real talk, bestie — we're deep in the Kernel API Manual today, like the actual manual, the ipc_set_key_private(9) one, and honestly? it's a little baddie of a function. short page, big "trust me I know exactly what I'm doing" energy. let's get into it 🫶

✨ NAME ✨

ipc_set_key_private — switch the key of an existing ipc to IPC_PRIVATE

like yes, we are rebranding an ipc's key. it was public, now it's private. main character move tbh 🔥

🌸 SYNOPSIS 🌸

void ipc_set_key_private (struct ipc_ids *ids , struct kern_ipc_perm
*ipcp );

that's it. that's the whole vibe. two pointers, no return value, no notes. iconic ✨

🎀 ARGUMENTS 🎀

  • ids — the ipc identifier set 💖 like, the whole little registry she lives in
  • ipcp — the ipc perm structure that's holding the key you wanna modify 🦋 she's the one getting the glow-up

💜 DESCRIPTION 💜

so here's the tea, and it's kind of the whole tea: ipc_ids.rwsem (as a writer, okay, we need the writer lock) and the spinlock for this ID are held before this function is called, and they remain locked on the exit. 😭

read that again. no cap. this function does not acquire the locks for you and it does not release them for you. you come in locked, you leave locked. it's giving "you're on your own, bestie" energy fr fr 💀

⚠️ so do not stroll in here unlocked and do not expect her to hand the locks back. the caller is the main character of the locking in this situation, not her. 🙈

🌈 SEE ALSO 🌈

Kernel file ./ipc/util.c 🔍 — yes, that's where she lives, and also a whole lil squad:

go read the whole friend group, iykyk 👑⭐

okay that's the page!! 💖 and for the cute little sign-off: this one's from the ./ipc corner of the world, all copyright-and-license vibes included, dated October 2026, and she goes by ipc_set_key_private(9) 🎀 mwah, go lock something properly 🧚💜

📦 where this page comes from