LIBNVMF_REGISTRY_ATTR_FOR_EACH-LIBNVME3(2)

💅 libnvmf_registry_attr_for_each(9) — straight outta the libnvme API manual 💅

okay so bestie, welcome to the libnvme API manual ✨ today’s main character is libnvmf_registry_attr_for_each(9), and she is here to walk a controller’s registry attributes like it’s a group chat. no cap.

🌸 NAME 🌸

libnvmf_registry_attr_for_each — iterate over attributes in a controller's registry entry.

✨ SYNOPSIS ✨

int libnvmf_registry_attr_for_each (struct libnvme_global_ctx *ctx ,
       const char *device , void (*callback)(const char *attr, const char
       *value, void *user_data) , void *user_data );

🎀 ARGUMENTS 🎀

• ctx — your libnvme global context; must not be NULL, bestie — like actually.
• device — Kernel device name (e.g. "nvme3") 🦋.
• callback — Callback invoked for each attribute 💅.
• user_data — User data passed to callback 🫶.

🦋 DESCRIPTION 🦋

she opens the registry directory for device and invokes callback for each attribute file found 🔥.

vibe check: if an attribute file disappears during iteration (e.g. because the device is removed concurrently), it’s silently skipped — no drama, just ghosted 💀.

💖 RETURN 💖

• 0 on success 🌈
• -ENOENT if the device directory does not exist at the time of the initial open 😭
• negative errno otherwise

bye bestie 🫶 this little love letter is from the libnvme API manual, dated October 2026, page libnvmf_registry_attr_for_each(9) — section 9 energy, iconic, no notes 💅✨