test_vfsuid...ntns_nonzero(9)

✨ test_vfsuid...ntns_nonzero(9) ✨

okay bestie, welcome to the Kernel API Manual 💅 — yes, the title up top is literally abbreviated as test_vfsuid...ntns_nonzero(9) because kernel devs love a dramatic ellipsis, but the actual function we're gossiping about is the full thing. let's get into it 🫶

---

🌸 NAME 🌸

test_vfsuid_root_in_currentns_nonzero — the icon herself. she's a test that checks vfsuid_root_in_currentns when the UID is non-zero. slay. 🔥

---

🎀 SYNOPSIS 🎀

void test_vfsuid_root_in_currentns_nonzero (struct kunit *test );

that's it. that's the whole vibe. ✨

---

🦋 ARGUMENTS 🦋

• test — the KUnit test context. she's the main character carrying all the state, no cap. 👑

---

💖 DESCRIPTION 💖

okay so here's the tea ☕ — this test verifies that a non-zero UID correctly returns false. that's the whole job. non-zero UID walks in, function says "nope, not root," returns false, everyone claps. literally that simple, and honestly? iconic. 🎀

like nothing more, nothing less — it's a lil vibe check for that exact behaviour and it ate. 💅

---

🌈 SEE ALSO 🌈

• Kernel file ./security/commoncap_test.c — go read the source, iykyk 📖
• test_vfsuid_root_in_currentns_init_ns(9)
• test_vfsuid_root_in_currentns_invalid(9)
• test_kuid_root_in_ns_init_ns_uid0(9)
• test_kuid_root_in_ns_init_ns_nonzero(9)
• create_test_user_ns_with_mapping(9)
• test_kuid_root_in_ns_with_mapping(9)
• test_kuid_root_in_ns_with_different_mappings(9)

the whole friend group fr fr 🫶 go say hi to all of them.

---

💀 friendly reminder: this is a KUnit test, so all the details above are load-bearing — don't go "fixing" the function name or the argument type. respect the struct kunit *test or perish. 🙈

---

and that's the page, bestie!! 🧚 this lil number lives under ./security and the date on it is October 2026, so mark your calendar and stan responsibly. mwah 💜🍓⭐