security_net...cattr_to_sid(9)

📦 version 7.3.1, in nixpkgs unstable

✨ security_netlbl_secattr_to_sid 💅

okay so this is a page from the Kernel API Manual bestie, and it's literally about turning NetLabel security attributes into a SELinux SID. tiny function, big main character energy. let's get into it 🎀

🌸 NAME 🌸

security_netlbl_secattr_to_sid — converts a NetLabel secattr into a SELinux SID. that's it, that's the whole gig ✨

🦋 SYNOPSIS 🦋

int security_netlbl_secattr_to_sid (struct netlbl_lsm_secattr *secattr ,
u32 *sid );

💖 ARGUMENTS 💖

  • secattr — the NetLabel packet security attributes 🎀 like, this is the thing you're handing over
  • sid — the SELinux SID 👑

💅 DESCRIPTION 💅

so what it does: it takes the NetLabel security attributes chilling in secattr and converts them into a SELinux SID. that's the vibe. 🌈

now here's the cute little detail — if the secattr field doesn't contain a full SELinux SID/context, then it uses SECINITSID_NETMSG as the foundation instead. like it's building on the base model, iykyk 🧚

and if it can, it lets the secattr be used by NetLabel to cache the secattr-to-SID conversion for future lookups. so it's not just doing the work, it's remembering the work. lowkey efficient 👑

returns zero on success, negative values on failure. classic. 😭

🔥 SEE ALSO 🔥

go read these too, bestie, they're all in the kernel file ./security/selinux/ss/services.c:

that's the whole page, no cap 🫶 this lil drop comes courtesy of ./security/selinux/ss and it's dated October 2026 — see you in the next one bestie, mwah 💜🌸

📦 where this page comes from