fdt_first_property_offset(9)

📦 version 7.3.1, in nixpkgs unstable

💅 fdt_first_property_offset — a.k.a. the Kernel API Manual page you're about to slay

okay so bestie, welcome to fdt_first_property_offset(9) — yes that's the whole name, she's long but she's worth it 🎀. This is the Kernel API Manual entry, and no cap, it's the little function that finds the offset of a node's first property. Let's get into it ✨

🌸 NAME 🌸

fdt_first_property_offset — finds the offset of a node's first property. that's literally her whole job and she does it flawlessly 💅

✨ SYNOPSIS ✨

int fdt_first_property_offset (const void *fdt , int nodeoffset );

look at that signature. iconic. two args, returns an int, no drama 🦋

🫶 ARGUMENTS 🫶

  • fdt — pointer to the device tree blob. your whole tree lives here, so treat her with respect 💖
  • nodeoffset — structure block offset of a node. that's the specific node you're poking at 🔍

👑 DESCRIPTION 👑

so here's the tea ☕: fdt_first_property_offset finds the first property of the node sitting at the given structure block offset. that's it, that's the vibe. you hand her a node, she hands you back where its first property begins. main character energy, zero wasted motion 🌟

🔥 RETURN 🔥

bestie, the return value is where it gets juicy — she'll give you one of these:

  • structure block offset of the property (>=0), on success — periodt, that's the good ending 🎉
  • -FDT_ERR_NOTFOUND, if the requested node has no properties — she looked, it's empty, moving on 😭
  • -FDT_ERR_BADOFFSET, if nodeoffset did not point to an FDT_BEGIN_NODE tag — wrong door, try again 🙈
  • -FDT_ERR_BADMAGIC, -FDT_ERR_BADVERSION, -FDT_ERR_BADSTATE, -FDT_ERR_BADSTRUCTURE, -FDT_ERR_TRUNCATED — the standard meanings, iykyk 💀

🌈 SEE ALSO 🌈

the whole friend group came out for this one 🫶 — and also the kernel file ./scripts/dtc/libfdt/libfdt.h:

and that's the whole page, bestie 💜 mwah 💋 — this one came from the source ./scripts/dtc/libfdt, dated October 2026. go forth and find those properties 🧚‍♀️⭐

📦 where this page comes from