fsverity_ioc...ead_metadata(9)

💅 fsverity_ioctl_read_metadata 💅

okay so bestie, this is a page from the Kernel API Manual and honestly? it's a little one, but it's iconic. sit with me. 🫶

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✨ NAME ✨

fsverity_ioctl_read_metadata — read verity metadata from a file

like literally just. pulling the verity metadata out of a file. that's the whole vibe. 🦋

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🌸 SYNOPSIS 🌸

int fsverity_ioctl_read_metadata (struct file *filp , const void __user
*uarg );

not me giving you the exact signature because you NEED to get it right, no cap. int going in, filp and uarg coming at you. periodt. 💅

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🎀 ARGUMENTS 🎀

• filp — the file you're reading the metadata from. the main character of this whole operation, fr fr. ✨
• uarg — a user pointer to fsverity_read_metadata_arg. that's a userspace pointer, so like… handle with care bestie. 🙈

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🔥 RETURN 🔥

• length read on success 🌈 — yes, the actual number of bytes, slay
• 0 on EOF 👑
• -errno on failure 💀

so basically: positive means we ate, zero means we're done, negative means something went wrong and the errno is telling you the story.

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🌟 SEE ALSO 🌟

• Kernel file ./fs/verity/read_metadata.c — go read the source, iykyk 🧚

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and that's the whole page! short king energy but every detail is there, no skips, no cap. 💖

source: ./fs/verity 💜 dated October 2026 🎀 — mwah, go read some metadata bestie 🦋⭐