security_ker...st_load_data(9)

📦 version 7.3.1, in nixpkgs unstable

💅 security_kernel_post_load_data(9) — Kernel API Manual

okay bestie, so this is a page straight out of the Kernel API Manual, and it's about security_kernel_post_load_data(9). Yes the header truncates it to security_ker...st_load_data(9) — that's just the man page being dramatic and running out of room, the real name is the long one 🎀

✨ NAME ✨

security_kernel_post_load_data — load userspace data from a non-file source. that's the whole vibe 💖

🦋 SYNOPSIS 🦋

int security_kernel_post_load_data (char *buf , loff_t size , enum
kernel_load_data_id id , char *description );

like, it returns an int, and it takes four things. we love a clean signature ✨

🌸 ARGUMENTS 🌸

  • buf — the data itself. literally just... data 🫶
  • size — how big the data is, i.e. the size of data
  • id — the data identifier. this is the lil label that says what kind of data we're dealing with
  • description — a text description of the data, and ngl this one is specific to the id value — so like, it matches the id, okay? don't mix and match 💅

🧚 DESCRIPTION 🧚

okay so this hook loads data that's provided by a non-file source — usually a userspace buffer, no cap. it's not reading from some file on disk, it's coming from somewhere else entirely 👑

but here's the thing that matters, bestie, listen up: this must be paired with a prior security_kernel_load_data call that indicated this hook would also be called. so it's a two-step, it's a matching set, it's giving coordinated outfit energy 🔥 for more info you wanna go look at security_kernel_load_data. iykyk.

💀 RETURN 💀

Returns 0 if permission is granted. that's it, that's the whole return story. zero means slay, you're allowed 💖

👑 SEE ALSO 👑

the source of all this wisdom lives in the kernel file ./security/security.c, and honestly the friend group here is huge. like, enormous. brace yourself girlie 💅

bestie that's like so many hooks, but they're all invited to the party and we don't gatekeep here 💅✨

and that's the whole page!! mwah 💖 this one ships from the ./security tree, dated October 2026 — catch u later, go read security_kernel_load_data(9) next or the pairing police will come for u 🫶🎀

📦 where this page comes from