libnvmf_exclusion_read(9)

💅 libnvmf_exclusion_read — bestie's guide to the libnvme API manual ✨

okay so. welcome to libnvmf_exclusion_read(9), fresh out of the libnvme API manual 🎀 yes the whole manual, and yes this one function is the main character today. let's get into it 🫶

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🌸 NAME 🌸

libnvmf_exclusion_read — literally just reads a list's raw text and a concurrency token. that's the whole vibe. two for one, no cap 💖

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✨ SYNOPSIS ✨

int libnvmf_exclusion_read (struct libnvme_global_ctx *ctx , const char
*name , char **text , uint64_t *version );

that's it. that's the signature. copy it exactly, she's sensitive about her formatting 💅

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🎀 ARGUMENTS 🎀

• ctx — the libnvme global context 🧚 must not be NULL, like fr fr, do not do that to her.
• name — the list name. that's it, that's the identifier you're working with 🦋
• text — on success, this gets set to the file's full contents as a newly allocated, NUL-terminated string 😭 and guess what — the caller frees it. that's you. you're the caller. it's your problem now bestie 🫶 also, plot twist: a missing list reads as an empty string, specifically so an editor can go ahead and create it. iconic behaviour honestly ✨
• version — on success, set to an opaque token that identifies the exact contents you just read 👑 and 0 means the list did not exist. keep this token! pass it back to libnvmf_exclusion_write so you can detect concurrent modification 👀 (yes, that's the whole point. someone else editing at the same time? caught. slay.)

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💖 DESCRIPTION 💖

okay so this function was designed for read-modify-write editors, and it ate: read the raw text → let a human edit it → write it back. that's the loop 🔥

and here's the best part: the directory location? entirely libnvme's concern babes 💅 the caller works only in terms of list names. no paths, no drama, no messy filesystem details leaking into your business. not me being obsessed with that separation of concerns 😭

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🌈 RETURN 🌈

• 0 — success, we're so back 🌸
• -EINVAL — bad name or a NULL out-param 🙈 (check your args bestie, this one's on you)
• negative errno — anything else went sideways 💀

no cap: if you get a negative errno, something else entirely went wrong — go read it, don't just guess.

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and that's the page!! source/version: the libnvme API manual, dated October 2026 🎀 bye bestie, go free your strings 💖✨🦋