for_each_shdr_str(9)

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

okay so real talk, this one lives in the Kernel API Manual and it's genuinely one of those little macros that eats and leaves no crumbs 🍓 it's a for loop-flavoured iterator that reads strings that are in an ELF section. yes, that ELF. no cap.

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✨ SYNOPSIS ✨

for_each_shdr_str (len , ehdr , sec );

that's the whole vibe check right there 🫶 (and yes, the spaces are exactly that, don't come for me, that's literally how it's written 💀)

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🎀 ARGUMENTS 🎀

• len — an "int" that's gonna hold the length of the current string. it's your little output slot, she reports back every loop 💖
• ehdr — a pointer to the ehdr of the ELF file. like, the ELF header itself, the main character 👑
• sec — the section that has the strings to iterate on. this is the section you're serving, the one with the good stuff in it 🌸

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🦋 DESCRIPTION 🦋

okay so picture this: it's a for loop 😭 and it iterates over all the nul terminated strings that are in a given ELF section. every single one. not a single string left behind, periodt 💅

the variable "str" will hold the current string for each iteration — so like, every time you go around the loop, str is your girl, she's got the string of the moment ✨

and the len you passed in? she'll contain the strlen of that string. so you get the string and its length, no extra math, we love an efficient queen 🌈

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💜 SEE ALSO 💜

• Kernel file ./scripts/tracepoint-update.c — go look, iykyk 👀

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fr fr bestie, that's the whole page. no hidden options, no top-secret env vars, just a loop that hands you strings and their lengths like a good friend who brings you a snack 🍓

mwah 💋 — this one came from ./scripts, dated October 2026, and i'm obsessed with her honestly 💖✨🎀