wdtpci_temp_read(9)

📦 version 7.3.1, in nixpkgs unstable

💖 wdtpci_temp_read(9) 💖

ok so this is a page from the Kernel API Manual, and bestie, we're about to read a temperature off a watchdog board. literally that's it. that's the whole vibe. 🎀

✨ NAME ✨

wdtpci_temp_read — and no, i'm not ghosting you, the original NAME line is genuinely just the function name and then nothing. a little mysterious. a little iconique. we move. 💅

✨ SYNOPSIS ✨

ssize_t wdtpci_temp_read (struct file *file , char __user *buf , size_t
count , loff_t *ptr );

look at her. five things going in, one ssize_t coming out. she's booked and busy. ✨

🌸 ARGUMENTS 🌸

  • file — the file handle for the watchdog board. like, which watchdog are we talking to, bestie? this one. 🫶
  • buf — the buffer you write 1 byte into. one single byte. that's the whole assignment. 💀
  • count — the length of that buffer. yes, it still matters even though it's one byte. respect the process. 🙈
  • ptr — the offset, and ngl the manpage is really clear about this one: no seek allowed. don't try it. not the move. 🚫

🔥 DESCRIPTION 🔥

okay so here's the tea: Read reports the temperature in degrees Fahrenheit. the whole API is in Fahrenheit, no cap, that's just how it is. 🧚

and then the original page hits us with the lore: it was designed by an imperial measurement luddite. iconic behavior honestly. celsius girlies, this one is not for you. 😭

🦋 SEE ALSO 🦋

kernel file ./drivers/watchdog/wdt_pci.c, plus the whole friend group:

bestie please go read the others too, this function did not come out of nowhere, she has a support system 💜

and that's the page!! sourced straight from ./drivers/watchdog, dated October 2026 — so you know it's fresh. mwah, go forth and read your temperatures in Fahrenheit like the luddite ancestors intended 👑💖

📦 where this page comes from