libnvme(9)

📦 version 3.2, in arch rolling

💅 libnvme — struct nvme_exported_subsys_mgmt_subsys_entry

okay so bestie, welcome to the libnvme API manual (yes, the 9 section, we're in the big leagues now ✨). today's main character is a struct, and honestly? she's kind of a big deal in the exported-subsystem world.

✨ NAME ✨

struct nvme_exported_subsys_mgmt_subsys_entry — the Exported NVM Subsystem Entry Data Structure, and no she did not come to play. this one is used by the Manage Exported NVM Subsystem Send Grant Host Access and Revoke Host Access operations. yes, both. she gets around 🦋

🎀 SYNOPSIS 🎀

here's the whole vibe, character for character:

struct nvme_exported_subsys_mgmt_subsys_entry {
    __u8 rsvd0[24];
    __u8 subnqn[256];
    __le16 pidup;
    __u8 rsvd282[38];
 };

like… look at her. padding, a big gorgeous name field, a tiny little port id, and then more padding. it's giving "carefully laid out by someone who respects alignment" 👑

🌸 Members 🌸

okay now let's meet the cast, one by one 💖

  • rsvd0 — Reserved. literally just __u8 rsvd0[24]. it's 24 bytes of nothing, and we love that for her. do not touch, do not fill, do not look at her too long 🫶
  • subnqn — the NVM Subsystem NVMe Qualified Name (SUBNQN) of an Exported NVM Subsystem. it's __u8 subnqn[256], so you've got a whole 256 bytes to spell out exactly which exported subsystem you mean. no cap, this is the identifying field 💅
  • pidup — the Port ID of the Underlying Port (PIDUP). she's a __le16, so yes bestie, little-endian, don't forget to byte-swap or you're gonna have a bad time 😭
  • rsvd282 — Reserved. __u8 rsvd282[38]. another lil block of personal space for the struct. hands off 🍓
quick vibe check: the reserved fields are reserved. don't be the person who writes lore into them and then wonders why things break. iykyk 🙈

⭐ and that's the whole page ⭐

no really, that's it. short and iconic. this page came straight out of the API Manual, libnvme(9), dated October 2026 — so yeah, she's from the future and she's still serving. slay, honestly. periodt 💜🧚‍♀️

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