scoped_user_read_access(9)

📦 version 7.3.1, in nixpkgs unstable

💅 scoped_user_read_access(9) — Kernel API Manual ✨

okay bestie, so this one's from the kernel API manual, and it's basically the "start here" button for a scoped user read access 🫶 like, you're about to peek at memory that belongs to userspace, and this macro sets that whole vibe up for you.

🌸 NAME 🌸

scoped_user_read_access — Start a scoped user read access ✨

🎀 SYNOPSIS 🎀

scoped_user_read_access (usrc , elbl );

that's it, that's the whole thing, no cap 💅

🦋 ARGUMENTS 🦋

  • usrc — Pointer to the user space address to read from 👀 like, the actual spot in userspace you're trying to get at.
  • elbl — Error label to goto when the access region is rejected 😭 so if the kernel's like "nope, not touching that," this is where you bail to.

✨ DESCRIPTION ✨

okay so here's the tea ☕ — the size of the access starting from usrc is determined via sizeof(*usrc)). yes, that's literally how it figures out how much to read. iconic behaviour honestly 🍓

For further information see __scoped_user_access above 👑 (it's up there in the page, go look, iykyk).

💖 SEE ALSO 💖

this is the part where i list every single friend in the group chat, and yes, there are a LOT of them 🌈

Kernel file ./include/linux/uaccess.h — plus these absolute legends:

like, the whole friend group showed up for this one 😭🫶

also quick reminder bestie: elbl is a goto target, so label it right or your code will simply not slay 💀

and that's a wrap, mwah 💋 this page lives in ./include/linux and it's dated October 2026 — so like, future vibes only 🧚‍♀️💜

📦 where this page comes from