io_uring_reg...r_personality(3)

💖 io_uring_register_personality — bestie edition 💖

okay so real talk, this page is io_uring_register_personality(3) from the liburing Manual, and it's about giving your io_uring ring its own little ✨identity✨. let's get into it 🫶

🌸 NAME 🌸

io_uring_register_personality — register credentials with io_uring

✨ SYNOPSIS ✨

#include <liburing.h>

int io_uring_register_personality(struct io_uring *ring);

🎀 DESCRIPTION 🎀

so like. the io_uring_register_personality(3) function registers the credentials of the calling application with the io_uring instance you point at with ring. that's it, that's the whole vibe.

and why do we care?? because this is what lets a ring be shared between separate users or processes while still keeping credential separation intact. no cap. everybody gets their own lil identity and nobody's stepping on anybody's toes 💅

the personality ID you get back can then be dropped into the personality field of a submission queue entry, which makes that request run using the credentials you just registered. it's giving "do this as me" energy 🦋

🔥 RETURN VALUE 🔥

on success you get a positive personality ID back, and you can use that thing in future operations, slay. on error? you get a negative errno value. sad but informative 😭

👑 SEE ALSO 👑

• io_uring_unregister_personality(3)
• io_uring_register(2)

ok bestie that's the whole page, every flag, every return value, all of it, nothing skipped 💖 go register those credentials and be the main character of your own ring 🌈

mwah 💋 this was liburing-2.4, dated January 18, 2025 — ty for coming to my ted talk, ily, bye 🎀✨