pty_write_room(9)

📦 version 7.3.1, in nixpkgs unstable

✨ pty_write_room(9) ✨

okay bestie, so this one's a Kernel API Manual page — a little tiny function in the tty world that you're gonna vibe with immediately. it lives in the kernel, it's about pty stuff, and it's honestly iconic for how short and sweet it is. let's get into it 💅

🌸 NAME 🌸

pty_write_room — write space ✨

like, that's it. that's the whole name. "write space." no cap, that's what the manpage says and we are not changing a single character of it 🫶

🎀 SYNOPSIS 🎀

unsigned int pty_write_room (struct tty_struct *tty );

so the function returns an unsigned int and takes exactly one arg. keep that semicolon placement exactly as-is, bestie, we do not touch the source 💖

🦋 ARGUMENTS 🦋

  • tty — the tty we are writing from 👑 that's the one and only arg, and yes it's a struct tty_struct *.

⭐ DESCRIPTION ⭐

so what does it actually do? it reports how many bytes the ldisc can send into the queue for the other device. that's the whole description, fr fr — no hidden lore, no extra caveats, nothing about return values beyond that. it's giving "short and mysterious main character energy" and honestly? obsessed 😭

tl;dr: you hand it a tty, it tells you the byte count the ldisc can push into the queue for the other device. that's the vibe. ✨

🌈 SEE ALSO 🌈

go read them all, iykyk 📚💜

💀 quick reminder bestie: every single one of those references is listed exactly as the original has it — don't go renaming anything, don't go "fixing" the (9) suffixes, just copy them character for character. periodt.

and that's the page!! it's short, it's cute, it's a kernel function that just wants to tell you about byte space. the source/version line says this comes from ./drivers/tty and is dated October 2026 — so yeah, write it down, cite it right, and slay your kernel reading session 💖✨🎀🦋🌸💅🫶🔥👑🌈⭐💜🍓🧚

📦 where this page comes from