nvme_get_subsys_attr(2)

✨ NAME ✨

ok so bestie, this is nvme_get_subsys_attr — she lives in the libnvme API manual (section 2, we're fancy like that), and her whole job is literally just reading a subsystem sysfs attribute. that's it. that's the girl. 💅

🌸 SYNOPSIS 🌸

char * nvme_get_subsys_attr (nvme_subsystem_t s , const char *attr );

look at her. one function call. returns a char *. iconic behaviour honestly. 🫶

💜 ARGUMENTS 💜

• s — an nvme_subsystem_t object. that's your subsystem handle, the main character of this whole situation. ✨
• attr — the sysfs attribute name, as a const char *. you're telling her which attribute you wanna peek at. iykyk. 🎀

🔥 RETURN 🔥

she hands you back a string with the contents of attr. periodt. 💖

BUT — and this is the important part, don't skip it, ngl —

• if the value is empty, you get NULL. 😭
• if something went wrong, you also get NULL — and the error shows up as a non-zero errno code. 💀

so like, check your errno fr fr, she's not gonna tell you twice. 🧚

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okay that's the whole page bestie, go read your sysfs attributes, slay, and remember this is the libnvme API manual in the July 2026 era, filed under nvme_get_subsys_attr, section nvme_get_subsys_attr(2) — no cap, that's the whole source of truth 💜✨