nvme_mi_admin_xfer(2)

✨ nvme_mi_admin_xfer(2) ✨

okay bestie, welcome to the libnvme API manual 💖 this one is nvme_mi_admin_xfer(2), and it's the raw admin transfer interface — like, no filter, no vibes, straight to the metal 🦋

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🌸 NAME 🌸

nvme_mi_admin_xfer — Raw admin transfer interface.

🎀 SYNOPSIS 🎀

int nvme_mi_admin_xfer (nvme_mi_ctrl_t ctrl , struct
nvme_mi_admin_req_hdr *admin_req , size_t req_data_size , struct
nvme_mi_admin_resp_hdr *admin_resp , off_t resp_data_offset , size_t
*resp_data_size );

💅 ARGUMENTS 💅

• ctrl — the controller we're sending the admin command to 👑 like, this is the whole destination of the operation
• admin_req — request data 📨 that's the request payload we're handing over
• req_data_size — size of request data payload 📏 exactly how much request payload there is
• admin_resp — buffer for response data 🫙 where the answer is gonna land
• resp_data_offset — offset into request data to retrieve from controller 🔍 we're saying "start grabbing from here"
• resp_data_size — size of response data buffer, updated to received size 🔄 it goes in as the size of the buffer and comes back as the size actually received, miss thing is doing double duty

🌈 DESCRIPTION 🌈

Performs an arbitrary NVMe Admin command, using the provided request data, in admin_req. The size of the request data payload is specified in req_data_size — and no, this does not include the standard header length. so a header-only request would have a size of 0 🫶 zero means "no payload", periodt.

On success, response data is stored in admin_resp, which has an optional appended payload buffer of resp_data_size bytes. The actual payload transferred will be stored in resp_data_size. These sizes do not include the Admin request header, so 0 represents no payload 💀 same rule, different direction.

As with all Admin commands, we can request partial data from the Admin Response payload, offset by resp_data_offset 🎯 so you don't have to take the whole thing if you only want a slice.

See: struct nvme_mi_admin_req_hdr and struct nvme_mi_admin_resp_hdr. 📚

⭐ RETURN ⭐

The nvme command status if a response was received (see enum nvme_status_field) or -1 with errno set otherwise..

okay wait, that trailing double period is literally in the original, I'm not being messy, I'm being faithful 💖

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and that's the whole page bestie, you ate it 💅👑

this was nvme_mi_admin_xfer(2) from the libnvme API manual, dated July 2026 — mwah, go slay some admin commands 🦋💜