can_use_rp(9)

📦 version 7.3.1, in nixpkgs unstable

💅 can_use_rp(9) — like, the Kernel API Manual era 🎀

okay so bestie, sit down, grab your boba 🧋 — this one's from the Kernel API Manual and it's genuinely such a small cute function with a big main-character job. it does exactly one thing and it does it slayfully ✨

🌸 NAME 🌸

can_use_rp — bestie, it literally checks whether the current user is allowed to use the reserved pool. that's the whole vibe check. no cap 💅

✨ SYNOPSIS ✨

int can_use_rp (struct ubifs_info *c );

like, that's it. one arg, one int coming back at you 🫶

🦋 ARGUMENTS 🦋

  • c — the UBIFS file-system description object 💖 (yes, the whole filesystem's little ID card, iconic)

👑 DESCRIPTION 👑

okay so here's the lore 🌈: UBIFS has this thing called the "reserved pool" — and it's flash space, right? but not just any flash space. it's reserved, meaning it's set aside for the superuser and for uses whose UID/GID is recorded in the UBIFS superblock. very exclusive, very VIP section at the club energy 🎀

so can_use_rp checks whether the current user is allowed to use that reserved pool. and it returns:

  • 1 — yes bestie, current user is allowed to use the reserved pool 🔥
  • 0 — nope, not for you (respectfully) 🙈

literally just a yes/no vibe check on a function call, and honestly? we love a simple queen 👑

💜 SEE ALSO 💜

Kernel file ./fs/ubifs/budget.c — and the whole friend group of budget functions, all of them, no one gets left out fr fr 🫶:

like, that's the entire budget.c squad and they all ate 💅✨

💡 tiny reminder bestie: this page lives under ./fs/ubifs and is dated October 2026 — so if you're reading it in the future, hi, hope the reserved pool is treating you well 🦋

and that's the tea 🍓 — written by the UBIFS crew, straight outta ./fs/ubifs, stamped October 2026, still serving can_use_rp(9) realness. mwah 💋🎀

📦 where this page comes from