selinux_netl...conn_request(9)

📦 version 7.3.1, in nixpkgs unstable

💅 selinux_netlbl_inet_conn_request(9) — a Kernel API Manual moment ✨

okay so bestie, welcome to the Kernel API Manual, section 9, and today's main character is selinux_netlbl_inet_conn_request 🎀 like yes we are diving into SELinux netlabel land and it's giving very much "security labels but make it networking" 🦋

🌸 NAME 🌸

selinux_netlbl_inet_conn_request — Label an incoming stream connection 💖

no cap, that's literally the whole job. it labels stuff. incoming stream connection stuff. iconic.

✨ SYNOPSIS ✨

int selinux_netlbl_inet_conn_request (struct request_sock *req , u16
family );

look at her. returning an int, taking a struct request_sock *req and a u16 family. she's booked and busy 💅 (and yes, the line break is exactly where it is, don't come for me, that's just how the page is laid out 🫶)

🧚 ARGUMENTS 🧚

  • req — the incoming connection request socket 🍓 like, the little baby request that just showed up at the door
  • family — the request socket's address family 🌈 you know, the whole "what kind of address are we even speaking" situation

🔥 DESCRIPTION 🔥

so picture this: a new incoming connection request rolls up, and it's represented by req 👑 that's the vibe. we need to label the new request_sock right here, at this exact moment, and then the stack will ensure the on-the-wire label will get preserved when a full sock is created once the connection handshake is complete ✨ like the label travels with you through the whole glow-up from request sock to full sock, no losing it in the group chat 💖

Returns zero on success, negative values on failure. that's it, that's the contract 😭 zero = slay, negative = something went sideways, check yourself 🙈

💜 SEE ALSO 💜

Kernel file ./security/selinux/netlabel.c — yes that's the source file, go read her, she's right there 📁

and the whole friend group, all blessed, all (9):

fr fr, that's the whole crew. go say hi 🫶

ok tiny reminder bestie: this page comes from the ./security/selinux source and it's dated October 2026 — so when you cite it, cite it right 💅✨ mwah, go label something, you got this 🎀💖
📦 where this page comes from