libnvme_ctrl_get_firmware(9)

💖 libnvme_ctrl_get_firmware(9) 💖

okay so bestie, welcome to section 9 of the libnvme API manual — yes we're in the kernel-adjacent docs and yes it's gonna be cute. this whole page is about one (1) little function that goes and gets you the firmware, and honestly? it's giving "small but mighty." ✨

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🌸 NAME 🌸

libnvme_ctrl_get_firmware — get firmware. that's it, that's the whole vibe. 🎀

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🦋 SYNOPSIS 🦋

int libnvme_ctrl_get_firmware (const struct libnvme_ctrl *p , const char
**firmware , const char *dflt );

literally the whole signature, character for character, no cap. copy it exactly and you'll slay. 💅

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🍓 ARGUMENTS 🍓

• p — the struct libnvme_ctrl instance you're querying. this is the main character of the operation, the controller we're asking about. 👑
• firmware — where to store the value on success. bestie, this is your little receiving basket — on the happy path, the firmware value lands right here. 🧺
• dflt — value to store in firmware on failure. so if things go sideways, you're not left with a random garbage pointer — this is your fallback bestie. 🫶

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💀 RETURN 💀

here's the vibe check on what comes back:

• 0 on success — we ate. 🔥
• -ENOENT if the attribute does not exist — the thing you wanted just… isn't there, and the function is telling you so. 🙈
• or a negative errno on failure — some other bad thing happened and it's reporting it in the standard negative-errno way. 😭

ngl, the move here is: check for 0, and treat anything negative as "not today." don't assume the output buffer is meaningful unless you got that 0. ✨

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and that's the whole page, bestie — short, sweet, and iconic. stay hydrated, read your errno values, and remember: firmware doesn't fetch itself. 🌈💜

— written up in the libnvme API manual, dated October 2026 🎀 (and yes, libnvme_ctrl_get_firmware(9) is the name up top too, iykyk) 🦋