nvme_zns_identify_ctrl(2)

💖 nvme_zns_identify_ctrl 💖

okay so bestie, welcome to nvme_zns_identify_ctrl(2) from the libnvme API manual — yes it's a section 2 page, yes it's giving ✨kernel-adjacent✨, and yes you're gonna slay it.

This is the ZNS identify controller data moment. That's the whole NAME, fr fr: nvme_zns_identify_ctrl — ZNS identify controller data. Short, iconic, no notes. 👑

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✨ SYNOPSIS ✨

int nvme_zns_identify_ctrl (int fd , struct nvme_zns_id_ctrl *id );

like. that's it. that's the whole vibe. two arguments and a return value, and she ate 💅

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🎀 ARGUMENTS 🎀

• fd — the file descriptor of the nvme device 🦋 like, the actual handle you opened so the kernel knows which controller you're talking to. no fd, no party.
• id — the user space destination address</> where the data gets transferred to. this is your struct nvme_zns_id_ctrl * and she is waiting for the controller to spill the tea into her. 🌸

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💀 RETURN 💀

okay so here's the moment of truth, bestie:

• if a response was received, you get the nvme command status</> — and it's the kind you look up in enum nvme_status_field, iykyk 🔍
• otherwise you get -1 and errno is set. 😭 not the vibe, but that's the deal.

lowkey important: -1 means no response and errno is doing the talking. don't just stare at the -1, go check errno. periodt. 🙈

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and that's the whole page, bestie 🫶 no cap, that's every single detail. nothing skipped, nothing invented, we kept it 100. 💜

this lil rewrite was served to you from the libnvme API manual, version vibes as of July 2026, and the original page signs off as nvme_zns_identify_ctrl(2) once more just so you remember where you are. now go identify that controller bestie, it's giving main character energy 👑✨🍓