aa_setprocattr_changehat(9)

💅 aa_setprocattr_changehat(9) — Kernel API Manual 💅

okay so bestie, this is the Kernel API Manual page for aa_setprocattr_changehat — the one that handles the procattr interface to change_hat. iconic little kernel moment, honestly 🎀

---

✨ NAME ✨

aa_setprocattr_changehat — handle procattr interface to change_hat 🦋

---

🌸 SYNOPSIS 🌸

int aa_setprocattr_changehat (char *args , size_t size , int flags );

---

🎀 ARGUMENTS 🎀

• args — the args received from writing to /proc/<pid>/attr/current. and listen: this one is NOT NULL, okay? no cap 🙈
• size — the size of the args.
• flags — the set of flags governing behavior. yes ma’am, behavior gets governed 💅

---

⭐ RETURN ⭐

Returns 0 or an error code if change_hat fails.

so yeah: success gives you 0, and if change_hat fails you get an error code. that’s the whole vibe check 😭✨

---

🔥 SEE ALSO 🔥

Kernel file ./security/apparmor/procattr.c — plus aa_getprocattr(9) and split_token_from_name(9). go peep those, iykyk 👑

---

made with 💖 from ./security/apparmor, dated October 2026. periodt 🫶🌈