libnvme(2)

💖 libnvme — struct nvme_capacity_config_desc 💖

okay bestie, sit DOWN, because we're about to talk about a little guy from the libnvme API manual (that's section 2, the system-call-ish / library one, iykyk) and honestly? it's giving structured data excellence. 🦋

This page is all about struct nvme_capacity_config_desc — the Capacity Configuration structure definition, with alllll its members laid out for you. No cap, it's short, but every byte matters. ✨

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🌸 NAME 🌸

struct nvme_capacity_config_desc — the Capacity Configuration structure definitions. it's literally right there in the name, bestie. 💅

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✨ SYNOPSIS ✨

here's the whole shape of it, exactly as the header has it, don't touch a byte:

struct nvme_capacity_config_desc {
    __le16 cap_config_id;
    __le16 domainid;
    __le16 egcn;
    __u8 rsvd6[26];
    struct nvme_end_grp_config_desc egcd[];
};

okay look at her. __le16 everywhere (little-endian, periodt), a chunky 26-byte reserved array doing absolutely nothing but holding space like a true icon, and then a flexible array member at the end doing the main character thing. 🎀

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🫶 Members 🫶

one by one, no skipping, we're not that kind of girl:

• cap_config_id — the Capacity Configuration Identifier. that's her whole job. 👑
• domainid — the Domain Identifier. which domain? the domain it identifies. slay. 💜
• egcn — the Number of Endurance Group Configuration Descriptors. count-y vibes, very "how many of the next thing are there". ngl it's a useful little number. 🔢✨
• rsvd6 — Reserved. it's 26 bytes of nothing and we respect it anyway. do not touch. do not write to it, bestie, I'm serious. 💀
• egcd — the Endurance Group Config descriptors. see struct nvme_end_grp_config_desc — that's where the actual tea is. 🍓

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fr fr reminder: rsvd6 is reserved. that means it's not yours, it's not for you, and future-you will not be thanked for messing with it. leave it alone. 🙈

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and that's the whole page, gorgeous. this was the libnvme API manual, page struct nvme_capacity_config_desc (section 2) — dated July 2026 in the original footer, so consider this your lil time capsule from that moment. 🌈 take care of your structs and they'll take care of you. mwah. 💅💖