vdo_status_to_errno(9)

📦 version 7.3.1, in nixpkgs unstable

💅 vdo_status_to_errno(9) — a little field guide from your fave Kernel API Manual 🎀

okay so bestie, grab a lil snack because we're talking about vdo_status_to_errno(9) — it lives over in the Kernel API Manual and honestly? it's giving humble little translator icon ✨

🌸 NAME 🌸

vdo_status_to_errno — given an error code, return a value we can return to the OS 💖

like literally that's the whole job. it takes a code and hands back something the OS will actually accept. no cap.

🦋 SYNOPSIS 🦋

int vdo_status_to_errno (int error );

✨ ARGUMENTS ✨

  • error — the error code to convert 🔥 that's the one and only thing you're handing over, and it comes in a few different flavors (see below, keep reading bestie, it's worth it)

💜 DESCRIPTION 💜

okay so here's the vibe check on the input, because error is lowkey a wildcard 🃏 — it can be any of these three things:

  • a system-generated value (such as -EIO) 🌈
  • an errno macro used in our code (such as EIO) 🍓
  • a UDS or VDO status code 👑

and the result? it must be something the rest of the OS can consume — which, for the kernel, means negative errno values such as -EIO 💀

so yeah, it's a little normalization moment. whatever messy form your error code shows up in, this function makes it presentable for the OS. main character energy, honestly 👑

⭐ RETURN ⭐

a system error code value 🫶 that's your output. no extra lore, that's it.

🧚 SEE ALSO 🧚

ngl, if you're poking around status codes, go read that file fr fr — it's right there in the SEE ALSO and it's literally the source 🫶

kiss kiss, that's the whole page 💜✨ this one came from ./drivers/md/dm-vdo, October 2026, and it's a vdo_status_to_errno(9) girly through and through 🎀

📦 where this page comes from