libnvme(9)

📦 version 3.2, in arch rolling

💅 libnvme(9) — bestie's guide to the API manual 🎀

Okay so picture this: you're deep in the libnvme API manual (that's the manual name, ik, we're already in it 💫) and you hit struct nvme_firmware_slot. And you're like "what IS this?" Bestie. Sit down. It's the Firmware Slot Information Log, and it's lowkey iconic. Let's get into it ✨

🌸 NAME 🌸

struct nvme_firmware_slot — the Firmware Slot Information Log, no cap 🫶

✨ SYNOPSIS ✨

Here's the whole thing, literally verbatim, don't come for me:

struct nvme_firmware_slot {
    __u8 afi;
    __u8 rsvd1[7];
    char frs[7][8];
    __u8 rsvd2[448];
 };

It's giving "small struct, big feelings" 😭 Like, four members. Four. And yet. Obsessed.

👑 Members 👑

Breaking it down member by member, because you deserve to know 💖

  • afi — the Active Firmware Info, okay? That's the whole vibe. It's the byte that tells you which slot is currently the main character 🔥
  • rsvd1 — Reserved. That's it. That's the member. It's __u8 rsvd1[7] just sitting there being reserved 🙈 Do not touch, do not pass go, do not invent a use for it.
  • frs — Firmware Revision for Slot. Yup, this is the one that actually slays 🔥 It's char frs[7][8], so like, seven slots, eight chars each — the firmware revisions live here, periodt.
  • rsvd2 — Reserved. Again. __u8 rsvd2[448] — that's a whole 448 bytes of reserved, bestie, it's giving "padding queen" 👑 Reserved means reserved, ngl, leave it alone.
Real talk though: anything marked Reserved stays reserved. Don't be out here reading or writing into reserved fields like you're the first person to ever think of it 💀 That's not main character energy, that's undefined-behaviour energy.

🦋 Quick vibe check 🦋

So like, to recap the whole struct in group-chat form:

  • afi → the active firmware info, the moment ✨
  • rsvd1 → reserved, mind your business 🙈
  • frs → firmware revisions for the slots, the actual content, she ate 💅
  • rsvd2 → reserved, the big one, 448 bytes of "no" 🌈

That's the whole page, bestie. Short, sweet, and every single byte accounted for. Iykyk 🧚

Signed off with love from the API Manual, struct nvme_firmware_slot, dated October 2026 — see you in the next one, mwah 💜🎀

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