ubi_attach_fastmap(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ubi_attach_fastmap(9) — the Kernel API Manual glow-up ✨

okay so bestie, buckle up, because we're about to get into the nitty-gritty of ubi_attach_fastmap from the Kernel API Manual. this one is lowkey iconic for anyone messing with UBI fastmaps, no cap. 🫶

🌸 NAME 🌸

ubi_attach_fastmap — literally creates a ubi_attach_info from a fastmap. that's the whole vibe. it's giving "fastmap speedrun any%". 🏃‍♀️💨

✨ SYNOPSIS ✨

int ubi_attach_fastmap (struct ubi_device *ubi , struct ubi_attach_info
*ai , struct ubi_fastmap_layout *fm );

🎀 ARGUMENTS 🎀

  • ubi — the UBI device object, aka your main character. it's the device we're doing all this for. 👑
  • ai — the UBI attach info object. think of it as the little notebook where we're writing down everything we learn. 📓
  • fm — the fastmap to be attached. this is the actual fastmap we're binding to, and honestly? it's kind of the moment. 💫

🦋 DESCRIPTION 🦋

so here's the tea: this function returns 0 on success, which is the slay outcome. ✨

but if the fastmap we found was unusable? it returns UBI_BAD_FASTMAP. it's a whole situation. 😭

and if it returns < 0, that indicates an internal error — not the fastmap's fault, something went sideways inside. 💀

bestie, remember: < 0 = internal error, not a bad fastmap. don't get it twisted. 🙈

🌈 SEE ALSO 🌈

this is the squad, fr fr — all the related functions hanging out in the Kernel file ./drivers/mtd/ubi/fastmap.c:

and that's the whole page, bestie! source is ./drivers/mtd/ubi, dated October 2026, and the page title is ubi_attach_fastmap(9). you're welcome, mwah 💋✨ go forth and attach those fastmaps with confidence. 🧚‍♀️💖

📦 where this page comes from