security_ismaclabel(9)

📦 version 7.3.1, in nixpkgs unstable

💅✨ security_ismaclabel — okay but is this xattr a MAC label or not

bestie. hi. this one's from the Kernel API Manual (section 9, so it's kernel-API girlies only, no syscall civilians 💅) and it's genuinely one of the shortest little functions you will ever meet. she's a one-job icon and we love her for it 🎀

🌸 NAME 🌸

security_ismaclabel — check if the named attribute is a MAC label ✨

🦋 SYNOPSIS 🦋

int security_ismaclabel (const char *name );

🍓 ARGUMENTS 🍓

  • name — the full extended attribute name. not a nickname, not a vibe, the whole thing 🫶

💜 DESCRIPTION 💜

so what she does is: check if the extended attribute specified by name represents a MAC label. that's it. that's the whole function. she looked at your xattr and went "hm. MAC label? possibly." 🔥

⭐ RETURN ⭐

returns 1 if name is a MAC attribute, otherwise returns 0. no in-between, no "it depends", no situationship — just 1 or 0, periodt 👑

🌈 SEE ALSO 🌈

bestie I need you to sit down. the SEE ALSO on this page is enormous. she's giving main character energy with a whole friend group 🫶 the source of all this is the kernel file ./security/security.c, and then literally everyone shows up:

like. that's the whole kernel security subsystem in one SEE ALSO. ngl, she said "come through, everyone" and everyone came 💅

okay that's the page!! mwah 💋 this whole thing lives under the ./security tree, dated October 2026, and it's filed as security_ismaclabel(9) — go check your xattrs bestie, and remember: 1 means MAC attribute, 0 means she's just not that girl 🎀✨

📦 where this page comes from