STRUCT DBC_USER_SETUID(9)

✨ struct dbc_user_setuid(9) — the Kernel API Manual, bestie edition ✨

okay so hear me out: this is a page straight outta the Kernel API Manual, and it's about struct dbc_user_setuid, aka the UID exchange structure (input). lowercase "input" btw, that's important, she's the one being handed in 💅

It's a tiny struct, only two members, but she's booked, busy, and absolutely essential. Let's get into it 🫶

---

🌸 NAME 🌸

struct dbc_user_setuid — UID exchange structure (input). that's it, that's the vibe ✨

---

🎀 SYNOPSIS 🎀

struct dbc_user_setuid {
    __u8 uid[DBC_UID_SIZE];
    __u8 signature[DBC_SIG_SIZE];
 };

look at her. two fields, zero notes, iconic 👑

---

💖 Members 💖

• uid — a 16 byte value representing software identity. that's the whole personality right there, she IS the ID 🪪✨
• signature — a 32 byte signature created by software using a previous nonce. yes, previous nonce, we don't reuse, we don't recycle, we respect the nonce 🙈🔐

---

🦋 SEE ALSO 🦋

• Kernel file ./include/uapi/linux/psp-dbc.h — AMD Dynamic Boost Control (DBC) interface(9) ⚡
• struct dbc_user_nonce(9)
• struct dbc_user_param(9)
• DBCIOCNONCE(9)
• DBCIOCUID(9)
• DBCIOCPARAM(9)
• enum dbc_cmd_msg(9)

like, go read all of them, that's the assignment, no skipping 🔥 iykyk

---

ngl bestie there are no options, no flags, no exit statuses, no environment variables and no warnings on this page — it's just a struct, its two members, and a whole lot of friends in SEE ALSO. don't go looking for lore that isn't there 💀

---

anyway, that's the whole page, you ate it, you understood it, periodt 🌈

this cutie lives in ./include/uapi/linux, dated October 2026, and that's the sign-off from your favorite kernel girlie — mwah 💋🧚💜