__aa_lookupn_ns(9)

Okay bestie, this is the __aa_lookupn_ns(9) page from the Kernel API Manual, and it’s giving “find that namespace” main-character energy ✨

🎀 NAME 🎀

__aa_lookupn_ns — lookup the namespace matching @hname. That’s the whole vibe: you got a hierarchical name, you want the ns. Slay.

🦋 SYNOPSIS 🦋

struct aa_ns * __aa_lookupn_ns (struct aa_ns *view , const char *hname ,
size_t n );

💅 ARGUMENTS 💅

• view — namespace to search in (NOT NULL). Like, you need a place to look, bestie.
• hname — hierarchical ns name (NOT NULL). The name has layers, it’s giving tree.
• n — length of hname. Yes, she needs the length.

🌸 DESCRIPTION 🌸

Requires: rcu_read_lock be held. Not optional. No cap.

It does a relative name lookup, recursing through profile tree. That’s it — cute little recursive search through the tree.

🔥 RETURN 🔥

It returns an unrefcounted ns pointer, or NULL if not found. Unrefcounted is the keyword, okay? Pay attention to that.

🌈 SEE ALSO 🌈

• Kernel file ./security/apparmor/policy_ns.c
• aa_ns_visible(9)
• aa_ns_name(9)
• alloc_ns(9)
• aa_free_ns(9)
• aa_lookupn_ns(9)
• __aa_find_or_create_ns(9)
• aa_prepare_ns(9)
• destroy_ns(9)
• __aa_remove_ns(9)
• __ns_list_release(9)
• aa_alloc_root_ns(9)

Mwah 💋 — this page’s source is ./security/apparmor, and it’s dated October 2026. Bye bestie, go look up those namespaces and absolutely ate 🫶