fdt_get_property_by_offset(9)

📦 version 7.3.1, in nixpkgs unstable

💅 fdt_get_property_by_offset(9) — Kernel API Manual, but make it cute ✨

okay bestie, welcome to the Kernel API Manual page for fdt_get_property_by_offset(9) — yes that's the whole name, she's long, she's iconic, we love her 💖

🎀 NAME

fdt_get_property_by_offset — retrieve the property at a given offset ✨

🦋 SYNOPSIS

const struct fdt_property * fdt_get_property_by_offset (const void *fdt
, int offset , int *lenp );

that's the whole vibe, no cap 🫶

🌸 ARGUMENTS

  • fdt — pointer to the device tree blob, aka the thing you're digging around in 🌈
  • offset — offset of the property you wanna retrieve, like the exact address of the cutest item in the shop 💅
  • lenp — pointer to an integer variable (will be overwritten, bestie, warned you 😭) or NULL

💜 DESCRIPTION

so fdt_get_property_by_offset retrieves a pointer to the fdt_property structure within the device tree blob at the given offset. simple as that, main character energy 👑

and if lenp is non-NULL, the length of the property value is also returned, in the integer pointed to by lenp. two-for-one deal, ate 💅

🚨 little note before you go off: this code only works on device tree versions >= 16. literally only those. fdt_getprop works on all versions, so if you're on an old blob, that's your girl ✨

🔥 RETURN

here's the tea, and there's two branches so pay attention 🍓

  • pointer to the structure representing the property — and if lenp is non-NULL, *lenp contains the length of the property value (>=0) 🎀
  • NULL on error — and if lenp is non-NULL, *lenp contains an error code (<0), like:
    • -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_PROP tag 💀
    • -FDT_ERR_BADMAGIC
    • -FDT_ERR_BADVERSION
    • -FDT_ERR_BADSTATE
    • -FDT_ERR_BADSTRUCTURE
    • -FDT_ERR_TRUNCATED

all the standard meanings, iykyk 🧚

🌈 SEE ALSO

okay this is the part where the whole group chat gets tagged 😭 — kernel file ./scripts/dtc/libfdt/libfdt.h and literally all of these:

like I said. everybody. the entire function family reunion 🫶🎀

and that's the page!! this one lives in ./scripts/dtc/libfdt, dated October 2026, and it's literally the fdt_get_property_by_offset(9) manual — go be great with it bestie 💖✨🦋

📦 where this page comes from