lsm_bpf_map_alloc(9)

📦 version 7.3.1, in nixpkgs unstable

💅 lsm_bpf_map_alloc(9) 💅

okay so real talk, bestie — this page lives in the Kernel API Manual and it's about lsm_bpf_map_alloc(9), which is honestly such a niche little icon of a function and I'm obsessed. it's one of the LSM blob allocators, so if you've ever wondered where a bpf_map gets its security blob from, this is the girl. 🎀

✨ NAME ✨

lsm_bpf_map_alloc — allocate a composite bpf_map blob

🌸 SYNOPSIS 🌸

int lsm_bpf_map_alloc (struct bpf_map *map );

🦋 ARGUMENTS 🦋

  • map — the bpf_map that needs a blob. that's it, that's the whole vibe check. she just needs a blob, okay? 🫶

💖 DESCRIPTION 💖

so what does she do? she allocates the bpf_map blob for all the modules. every single one of them gets their slice, no cap. 💅✨

and what does she give you back? 0 if everything slayed — or -ENOMEM if memory can't be allocated. so if you get -ENOMEM, that's not a vibe, that's your RAM ghosting you. 😭💀

👑 SEE ALSO 👑

the kernel file in question is ./security/security.c, and honestly the rest of the guest list is long — like, group-chat-with-400-members long. but every single one of them is invited, so here we go, no skips, no cuts, the whole iconic lineup: 🌈

that's the whole roster, bestie, and yes i typed every one of them, my fingers are going through it 😭✨

🫶 ok so that's the tea on lsm_bpf_map_alloc(9). this cutie came from the source ./security and the version/date stamp on her is October 2026 — so she's an autumn icon, main character energy, dropping in from the future basically. 💜🎀 bye bestie, go allocate responsibly! 🌸

📦 where this page comes from