security_fs..._parse_param(9)

📦 version 7.3.1, in nixpkgs unstable

💅 security_fs_context_parse_param — Kernel API Manual ✨

okay so bestie, we're deep in kernel land today and this one's honestly kind of a baddie. it's from the Kernel API Manual, and it's all about a filesystem context getting a parameter handed to it. let's get into it 🎀

🌸 NAME 🌸

security_fs_context_parse_param — literally just: configure a filesystem context. that's the whole gig. periodt ✨

🦋 SYNOPSIS 🦋

int security_fs_context_parse_param (struct fs_context *fc , struct fs_parameter *param );

💖 ARGUMENTS 💖

  • fc — the filesystem context, aka the main character of this whole situation 🫶
  • param — the filesystem parameter, aka the little message it's carrying 👑

💅 DESCRIPTION 💅

so the way that this works: userspace handed over a parameter to configure a superblock. and now the LSM is standing there like… do i want this? 👀

the LSM has two options, no cap:

  • it can consume the parameter (slay, it's hers now), or
  • it can return it to the caller for use somewhere else (respectful handback, we love to see it)

that's it. that's the vibe check. 🦋

⭐ RETURN ⭐

the return value is honestly giving "read the room":

  • if the parameter is used by the LSM, she should return 0 ✅
  • if it's returned to the caller, you get -ENOPARAM 🙈
  • otherwise? a negative error code comes back at you 😭

👑 SEE ALSO 👑

okay so this is the part where i need you to hydrate before we go any further 💀 there are a LOT of neighbours. every single one, no skips, in order:

bestie if you made it to the end of that list, you're genuinely built different 💀👑 i'm obsessed with you fr fr.

that's the whole page, angel 💜 no cap, every hook accounted for. this icon lives in ./security and the date on it is October 2026 — so go be the most secure filesystem context at the function, mwah 🍓🧚✨

📦 where this page comes from