ccw_device_get_util_str(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ccw_device_get_util_str(9) — bestie's guide to utility strings ✨

okay so this is a page from the Kernel API Manual, section 9, and it's literally about grabbing yourself a fresh little copy of some utility strings. tiny page, big main character energy. let's get into it 🎀

🌸 NAME 🌸

ccw_device_get_util_str — return newly allocated utility strings

like, it gives you back utility strings that are newly allocated. that's the whole vibe. 💖

✨ SYNOPSIS ✨

u8 * ccw_device_get_util_str (struct ccw_device *cdev , int chp_idx );

two things go in, a u8 * comes out. slay. 🫶

🦋 ARGUMENTS 🦋

  • cdev — the device you want the utility strings for. this is your target, the one you're getting the strings for, bestie. 👑
  • chp_idx — the index of the channel path. yes, index, as in which one. don't skip this one. 💅

🔥 DESCRIPTION 🔥

okay so on success, this returns a newly allocated copy of the utility strings that are associated with the given channel path. not a peek, not a pointer into something someone else owns — a whole new allocated copy, just for you. 🎀

and on error? you get NULL. that's it, that's the deal. no cap. 💀

⭐ SEE ALSO ⭐

the kernel file that lives at ./drivers/s390/cio/device_ops.c — go look 👀

and the whole friend group of related calls, all here, all iconic:

and that's the page!! 🧚 this lil slice of kernel API docs lives in ./drivers/s390/cio, dated October 2026 — screenshot it, cite it, love it. byeee 💜🌈

📦 where this page comes from