die_get_data...ber_location(9)

📦 version 7.3.1, in nixpkgs unstable

💅 die_get_data_member_location(9) — the kernel API manual, but make it make sense

Okay bestie, so this is the die_get_data_member_location page from the Kernel API Manual, and no, the title up top being all die_get_data...ber_location(9) is just the header doing its truncated little thing — the real name is right below. Let's get into it ✨

🌸 NAME 🌸

die_get_data_member_location — get the data-member offset. That's it, that's the whole assignment. 🎀

🦋 SYNOPSIS 🦋

int die_get_data_member_location (Dwarf_Die *mb_die , Dwarf_Word *offs
);

Look at her. Two args, returns an int. Iconic signature, no notes. 💅

✨ ARGUMENTS ✨

  • mb_die — a DIE of a member of a data structure. Like, the specific member DIE, bestie, not the whole struct. 🫶
  • offs — the offset of the member in the data structure. This is the output spot where the answer lands. 💖

💜 DESCRIPTION 💜

So the whole vibe here: you hand it mb_die, and it gets the offset of mb_die in the data structure that includes mb_die (yes, the struct it lives in, we're going there 🔥), and it stores that resulting offset into offs.

And if literally anything goes wrong? It returns errno. Not a vibe, but at least it tells you. 😭

Lowkey important: on error you get errno back, so don't just shrug at a nonzero return, okay? Check it. 👑

🌈 SEE ALSO 🌈

The kernel file lives at ./tools/perf/util/dwarf-aux.c, and it's honestly giving main character energy with this whole friend group of functions. Go say hi to all of them:

Like, forty-one of them. I counted. Obsessed with the commitment honestly. 🍓🧚

🎀 sign-off 🎀

This little masterpiece ships from the source spot ./tools/perf/util, dated October 2026, and it answers to the name die_get_data...ber_location(9) when the header's feeling shy. Slay, drink water, and go get those offsets. 💖✨🦋

📦 where this page comes from