ubi_io_read_vid_hdr(9)

📦 version 7.3.1, in nixpkgs unstable

💖 ubi_io_read_vid_hdr(9) 💖

okay so bestie, welcome to the Kernel API Manual page for ubi_io_read_vid_hdr — yes, section 9, yes, that section 9, the kernel-internals one. grab a strawberry 🍓 and let's get into it.

✨ NAME ✨

ubi_io_read_vid_hdr — read and check a volume identifier header. that's the whole vibe. read it, check it, done. 💅

🌸 SYNOPSIS 🌸

int ubi_io_read_vid_hdr (struct ubi_device *ubi , int pnum , struct
ubi_vid_io_buf *vidb , int verbose );

it's giving function signature realness. four args, one int coming back at you. 🔥

🦋 ARGUMENTS 🦋

  • ubi — the UBI device description object. like, the whole device's little profile card. main character energy fr.
  • pnum — the physical eraseblock number you wanna read from. tell it which block, bestie, it's not a mind reader 😭
  • vidb — the volume identifier buffer where the data gets stored. it's the cute lil container, the designated drop spot 🎀
  • verbose — be verbose if the header is corrupted or wasn't found. so if your header is busted or just not there, this one decides whether it yaps about it or stays quiet 🙈

👑 DESCRIPTION 👑

so here's the tea: this function reads the volume identifier header from physical eraseblock pnum and stores it in vidb. 🫶

it also checks the CRC checksum of the read volume identifier header. yes, CRC, she's doing her little integrity moment, we love a self-checking queen. ✨

The error codes are the same as in

Note, the implementation of this function is also very similar to

ngl those last two sentences literally just stop mid-thought in the original and I'm not gonna invent the rest for you 💀 that's the text, that's the whole text, no cap.

🌈 SEE ALSO 🌈

all the siblings, cousins and neighbors — iykyk:

Kernel file ./drivers/mtd/ubi/io.c

and that's the page!! 🧚💜 it lives in ./drivers/mtd/ubi, and this copy is dated October 2026 — so like, yeah, ubi_io_read_vid_hdr(9), October 2026, ./drivers/mtd/ubi, that's the whole footer moment. slay, go read some eraseblocks, bestie 🎀⭐

📦 where this page comes from