libnvme(9)

💖 NAME 💖

struct nvme_eom_lane_desc — EOM Lane Descriptor

okay so welcome to the libnvme man page, section 9 (API Manual), bestie. today's main character is struct nvme_eom_lane_desc — the EOM Lane Descriptor — and it's literally the struct that holds all these eye-related fields. i'm lowkey obsessed with how specific it is. no cap, it's giving "i have a lot of measurements and i'm not sorry" vibes. 🦋✨

✨ SYNOPSIS ✨

here's the whole struct exactly as it is, so you can screenshot it and send it to the group chat:

       struct nvme_eom_lane_desc {
           __u8 rsvd0;
           __u8 mstatus;
           __u8 lane;
           __u8 eye;
           __le16 top;
           __le16 bottom;
           __le16 left;
           __le16 right;
           __le16 nrows;
           __le16 ncols;
           __le16 edlen;
           __u8 rsvd18[14];
           __u8 eye_desc[];
        };

ngl that's lowkey a lot of fields, but we're gonna go through every single one because that's just how we do it here. slay. 💅

🫶 Members 🫶

okay bestie, member-by-member breakdown, no skipping, no summarizing, periodt:

• rsvd0 — Reserved. translation: do not touch it, it's reserved for a reason. hands off. 🙈
• mstatus — Measurement Status. this is the vibe check of the measurement, fr fr — it tells you the status.
• lane — Lane number. which lane are we on? this field knows. 🛣️
• eye — Eye number. yes, we're in our eye era, and this is the eye's ID. iconic. 👁️✨
• top — Absolute number of rows from center to top edge of eye. literally the distance from the center to the top edge, no cap. 📏
• bottom — Absolute number of rows from center to bottom edge of eye. same energy but downward. 🫶
• left — Absolute number of rows from center to left edge of eye. left side represent. 💅
• right — Absolute number of rows from center to right edge of eye. and right side, obviously. 🌈
• nrows — Number of Rows. how many rows? this many. slay. 🔥
• ncols — Number of Columns. how many columns? also this many. periodt. 👑
• edlen — Eye Data Length. the length of the eye data, noted. 📐
• rsvd18 — Reserved. another reserved one, and it's __u8 rsvd18[14], so it's 14 bytes of "do not touch". bestie, i'm serious. 🚫
• eye_desc — Printable Eye, Eye Data, and any Padding. this is the __u8 eye_desc[] field at the end, and it's literally the printable eye, the eye data, and any padding, all chillin' together. it's giving main character energy. iykyk. ✨

not me writing a whole PSA about this, but Reserved is highkey the most important rule: you do not write to it, you do not read from it meaningfully, you just let it be. periodt. 💖

okay that's the whole struct, bestie. you ate that. 💅 this page comes from the libnvme API manual, section 9, dated October 2026, and it's all about struct nvme_eom_lane_desc — so go forth and measure those eyes responsibly. mwah. 🫶💖