vtbl_check(9)

✨ vtbl_check(9) ✨

okay so real talk, this one's from the Kernel API Manual and it's about vtbl_check — the vibe-check function for your volume table 💅

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🎀 NAME 🎀

vtbl_check — literally checks if the volume table is not corrupted and is, like, sensible 🧚

🌸 SYNOPSIS 🌸

int vtbl_check (const struct ubi_device *ubi , const struct
       ubi_vtbl_record *vtbl );

🦋 ARGUMENTS 🦋

• ubi — the UBI device description object, bestie. the whole device's little ID card 🪪
• vtbl — the volume table itself. the thing we're checking 👑

🔥 DESCRIPTION 🔥

so this function is basically the bouncer at the club door for your volume table 🚪✨ it looks at vtbl and gives you back a number that tells you everything:

• returns zero if vtbl is all right — it ate, no notes, iconic 👑
• returns 1 if the CRC is incorrect — the data got a little scrambled, not me finding out like that 😭
• returns -EINVAL if it contains inconsistent data — i.e. the table is saying things that don't add up, and it's giving messy fr fr 💀

so yeah. one function, three possible outcomes, zero chill. check the return value, bestie, always check the return value 🫶

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/mtd/ubi/vtbl.c
• ubi_update_layout_vol(9)
• ubi_change_vtbl_record(9)
• ubi_vtbl_rename_volumes(9)
• create_vtbl(9)
• process_lvol(9)
• create_empty_lvol(9)
• init_volumes(9)
• check_av(9)
• check_attaching_info(9)
• ubi_read_volume_table(9)
• self_vtbl_check(9)

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k that's the whole page, go read the friends too, they're all in the same ./drivers/mtd/ubi friend group 💜

mwah 💋 this lil recap came to you from the Kernel API Manual, sourced fresh from ./drivers/mtd/ubi, dated October 2026. slay, bye 🎀✨