ldm_validate_tocblocks(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ldm_validate_tocblocks — a Kernel API Manual moment

okay so bestie, buckle up, we're in the ldm corner of the kernel today and this little function is literally the vibe check for the table of contents ✨

🌸 NAME 🌸

ldm_validate_tocblocks — validate the table of contents and its backups 🎀

✨ SYNOPSIS ✨

bool ldm_validate_tocblocks (struct parsed_partitions *state , unsigned
long base , struct ldmdb *ldb );

like, it returns a bool, takes three things, and yes the line break in the middle is just how it's written, don't come for me 💀

🫶 ARGUMENTS 🫶

  • state — the partition check state, and it includes the device that's holding the LDM Database. it's giving "everything you need to know lives here" energy 👑
  • base — the offset, into state->disk, of the database. it's a position, not a vibe. don't mix them up 💅
  • ldb — the cache of the database structures. cozy little storage situation 🎀

💖 DESCRIPTION 💖

so what it actually does: it finds and compares the four tables of contents of the LDM Database stored on state->disk, and it returns the parsed information into toc1. four of them. not three, not five. four. the backups are the whole point, no cap 🌈

also, the offsets and sizes of the configs get range-checked against a privhead. so it's not just trusting whatever numbers show up, it's checking they're even in a sane range first. icon behaviour, honestly ⭐

🦋 RETURN 🦋

the original page leaves this one blank — nothing here, bestie 🙈 so there's genuinely nothing for me to tell you about the return value beyond what the synopsis already shows (bool). i'm not gonna invent lore, that's not the move 💀

👑 SEE ALSO 👑

the kernel file is ./block/partitions/ldm.c, and the whole squad is:

go read them all, i'll wait 🍓

okay that's the whole page!! mwah 💜

sign-off time, bestie 🧚 this one comes from ./block/partitions and it's dated October 2026 — anyway ily, go validate those tocblocks, periodt 💅🌸

📦 where this page comes from