wdrtas_open(9)

📦 version 7.3.1, in nixpkgs unstable

💅 wdrtas_open(9) — Kernel API Manual, but make it a vibe 🎀

okay so bestie, welcome to the wdrtas_open(9) page ✨ this is straight out of the Kernel API Manual and we're gonna get through it together, i promise it's not that deep 🫶

🌸 NAME 🌸

wdrtas_open — the open function of the watchdog device, no cap 🐕‍🦺

✨ SYNOPSIS ✨

int wdrtas_open (struct inode *inode , struct file *file );

like, that's the whole signature. she's short, she's iconic, she's literally the entry point 💅

🦋 ARGUMENTS 🦋

  • inode — the inode structure 🗂️ yeah, that inode. the one you already know.
  • file — the file structure 📄 also exactly what it says on the tin.

🔥 DESCRIPTION 🔥

so what does she actually do?? okay:

  • returns 0 on success — slay 🎉
  • returns -EBUSY if the file has been opened already — like, girl, it's taken 💀
  • returns <0 on other failures — not every day is a good day 😭

the way that this is the function called when the watchdog device is opened 🐕‍🦺✨ that's it, that's the whole job, and she does it flawlessly, periodt.

ngl, that -EBUSY is doing a LOT of heavy lifting here — second open attempt gets absolutely shut down and honestly? respect. 👑

👑 SEE ALSO 👑

the kernel file lives at ./drivers/watchdog/wdrtas.c 📁 and here's the whole friend group, all of them, in order, not one skipped 💖:

like. a whole squad. main character energy all around 🌈👯‍♀️

and that's the page bestie!! 🎀 this little gem comes to you from ./drivers/watchdog, dated October 2026 ⭐ — go forth and open your watchdog devices responsibly, ily, bye 💜🧚

📦 where this page comes from