__swahw32p(9)

📦 version 7.3.1, in nixpkgs unstable

💅 __swahw32p — the Kernel API Manual, but make it make sense ✨

okay so bestie, you opened __swahw32p(9) from the Kernel API Manual and you're standing there like 🧍‍♀️... don't worry, this one's short and honestly kinda iconic. it's the pointer-flavoured twin of __swahw32, and we're gonna get you through it. no cap. 🫶

✨ NAME ✨

__swahw32p — returns a wordswapped 32-bit value pulled straight from a pointer 💖

like, it's giving "dereference but make it byte-shuffled." main character energy fr fr.

🌸 SYNOPSIS 🌸

__u32 __swahw32p (const __u32 *p );

that's it. that's the whole vibe check. one function, one pointer, one __u32 coming back at you. 🦋

🎀 ARGUMENTS 🎀

  • p — a pointer to a naturally-aligned 32-bit value. ngl the "naturally-aligned" part is doing a lot of work here, so pls respect it 🙈 — don't be out here handing it some cursed misaligned address, bestie.

👑 DESCRIPTION 👑

so the actual wordswapping behaviour? that's __swahw32's whole storyline. this page is basically like "go read __swahw32 for details of wordswapping" — and honestly? valid. the lore lives over there. 📖✨

think of __swahw32p as the pointer-access version: it grabs the value through p and gives you the wordswapped result. the swapping semantics themselves are not re-explained here, so if you want the full breakdown you gotta slide into __swahw32's DMs. 💌

💫 SEE ALSO 💫

bestie the friend group is huge and we love them all. these all live in the kernel file ./include/uapi/linux/swab.h 🍓:

iykyk — the p girlies are pointers, the s girlies are the in-place squad, and the plain ones are just doing their thing. go read them all, you'll eat. 🔥

lowkey reminder: this page only promises to return a wordswapped 32-bit value from a pointer, and it defers all the actual swapping details to __swahw32. don't invent extra behaviour, babe — that's not the assignment 💀

and that's the whole page, periodt. 🎀 sourced from ./include/uapi/linux, dated October 2026 — so yes, she's from the future, and yes, she still slays. bye bestie, go swap some words 💜👑

📦 where this page comes from