ubifs_recover_inl_heads(9)

📦 version 7.3.1, in nixpkgs unstable

💖 ubifs_recover_inl_heads 💖

okay so bestie, welcome to the Kernel API Manual — this one is ubifs_recover_inl_heads(9) and it's lowkey a little cleanup baddie for the UBIFS file system. let's get into it ✨

🎀 NAME 🎀

ubifs_recover_inl_heads — recover index and LPT heads. that's it, that's the job 🫶

✨ SYNOPSIS ✨

int ubifs_recover_inl_heads (struct ubifs_info *c , void *sbuf );

🌸 ARGUMENTS 🌸

  • c — the UBIFS file-system description object 💅 like, the whole vibe of the fs in one struct
  • sbuf — a LEB-sized buffer to use 🦋 it's exactly LEB-sized, no more no less

🦋 DESCRIPTION 🦋

so the whole point, bestie: this function makes sure there is no data on the flash sitting at the index and LPT head locations. like, none. zero. clean slate energy ✨

it's dealing with the recovery of a half-completed journal commit 😭 — which, ngl, is exactly the kind of mess you'd expect. here's the tea: UBIFS is careful, never to overwrite the last version of the index or the LPT. iconic, honestly 👑

because the index and the LPT are wandering trees (yes, wandering — they move around, main character energy), data from a half-completed commit will not be referenced anywhere in UBIFS. so where does that stray data end up? two places, both fine:

  • in LEBs that are assumed to be empty, and that will be unmapped anyway before use 🫶
  • or in the index and LPT heads 💜

that's the whole picture. no cap.

this function returns 0 on success and a negative error code on failure 🙈

🔥 SEE ALSO 🔥

the kernel file is ./fs/ubifs/recovery.c and it's got a whole squad, fr fr:

mwah 💋 that's the whole page. this one lives under ./fs/ubifs, dated October 2026, and it's page ubifs_recover_inl_heads(9) of the Kernel API Manual — go off, you understood it perfectly 💜✨

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