tty_port_hangup(9)

📦 version 7.3.1, in nixpkgs unstable

💅 tty_port_hangup(9) — okay so this is the Kernel API Manual, bestie 🎀

Like, the whole thing lives in the Kernel API Manual, section 9, and it's called tty_port_hangup. Say it with me. Slay. ✨

✨ NAME ✨

tty_port_hangup — the hangup helper 🫶 like it literally does the hangup thing for you, no cap

🌸 SYNOPSIS 🌸

void tty_port_hangup (struct tty_port *port );

That's it. That's the whole call. Iconic, honestly. 💅

🦋 ARGUMENTS 🦋

  • port — the tty port 💖 (yes, that's genuinely all it says, and yes, struct tty_port * is the type — the vibe check is: it's a port, you pass it in, done ✨)

🔥 DESCRIPTION 🔥

So what does this actually do, you ask? It performs the port-level tty hangup flag and count changes 🎀 — like the flag gets flipped and the count gets adjusted, at the port level, on purpose, by this function.

Then it drops the tty reference 💀 — one reference, gone, poof, released, bye 👋

⚠️ OKAY THIS PART MATTERS, FR FR: the caller holds the tty lock. Like, you hold it, going in. This is not optional, this is not vibes, this is a precondition. Don't be out here calling it without the lock, I'm begging 🙈

💜 SEE ALSO 💜

The kernel file ./drivers/tty/tty_port.c, and honestly the whole friend group 😭 — every single sibling function, here we go, main character energy for all of them:

Like, the entire lineup. Obsessed. 🦋💖

Okay that's the page!! 🍓 This cutie is filed under ./drivers/tty, dated October 2026, and it goes by tty_port_hangup(9) — mwah, go read the others too, ily, bye bestie! 🌈🧚‍♀️💜

📦 where this page comes from