open_namespace(9)

💅 open_namespace(9)

okay so this is a page from the Kernel API Manual, and it's about open_namespace(9) — yes bestie, the function and the manpage section share a name, that's just how kernel girlies do it 🎀

---

✨ NAME ✨

open_namespace — open a namespace. that's it, that's the whole vibe 🦋

---

🌸 SYNOPSIS 🌸

int open_namespace (struct ns_common *ns );

---

💖 ARGUMENTS 💖

• ns — the namespace to open. like, the actual one you wanna open. hand it over 🫶

---

🧚 DESCRIPTION 🧚

okay so the important bit, and don't scroll past it: this consumes a reference to ns — indendent of success or failure. meaning whether the call works out or absolutely flops, that reference is gone. consumed. eaten. not coming back 💀

so like, don't be out here reusing that reference afterwards, mkay? it's giving "borrowed your hoodie and never returning it" energy 😭

---

👑 RETURN 👑

• a file descriptor on success — slay ✨
• a negative error code on failure — not slay, but at least you know 🙈

---

🔥 SEE ALSO 🔥

• Kernel file ./fs/nsfs.c — the source, go read it, i believe in you 📖
• ns_match(9) — its little friend, also worth a look 👀

---

fr fr: reference consumed either way. no cap. that's the one thing you cannot mess up here 🚨

---

and that's the tea, bestie 🍓 this lil page lives under ./fs and it's dated October 2026, so go forth and open those namespaces responsibly 💜🌈⭐