ccw_device_get_chid(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ccw_device_get_chid(9) — like, the Kernel API Manual page, bestie ✨

Okay so picture this: you're deep in the s390 corner of the kernel (iykyk), and you need the Channel ID that goes with a specific CHPID. That's literally the whole job of ccw_device_get_chid, and she does it flawlessly. No cap. 🎀

🌸 NAME 🌸

ccw_device_get_chid — obtain the Channel ID associated with a specified CHPID. That's it, that's the vibe check, and she passes. 💖

✨ SYNOPSIS ✨

int ccw_device_get_chid (struct ccw_device *cdev , int chp_idx , u16
*chid );

Look at that signature. Iconic. Not me obsessing over the spacing — it's copied exactly, periodt. 🫶

🦋 ARGUMENTS 🦋

  • cdev — the device you want the Channel ID for. Your main character. The one you're doing all this for. 💅
  • chp_idx — the index of the channel path. Which path? This one, bestie. 👑
  • chid — the resulting Channel ID. She's the output, she's the payoff, she's the reason you called this function at all. ✨

🎀 SEE ALSO 🎀

First up, the lore itself lives in the kernel file ./drivers/s390/cio/device_ops.c — go read it, it's giving source of truth. 📖

And now the full squad, everybody say hi:

All of them. Every single one. I would never do you dirty by skipping one. 🙈

Lowkey reminder: everything literal up there — function names, the signature, file paths, numbers — stays exactly as written. The vibe is mine, the facts are the kernel's. 💀

okay that's the page!! mwah 💋 this lil masterpiece comes from ./drivers/s390/cio, dated October 2026, and it's filed under the Kernel API Manual — go forth and get those Channel IDs, bestie, you're gonna slay 🦋🌸💜

📦 where this page comes from