check_signature(9)

🌈 check_signature(9) 🌈

okay bestie, welcome to the Kernel API Manual — we're checking out check_signature(9), and it's literally about finding BIOS signatures. 💅✨

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✨ NAME ✨

check_signature — find BIOS signatures 🕵️♀️💖

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🦋 SYNOPSIS 🦋

the whole signature, bestie:

int check_signature (const volatile void __iomem *io_addr , const
       unsigned char *signature , int length );

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🎀 ARGUMENTS 🎀

• io_addr — the mmio address to check. yes, literally that one. 👀
• signature — the signature block. the thing we're comparing, periodt. 🧚
• length — length of signature. gotta know how much signature we're working with. 💫

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💅 DESCRIPTION 💅

so the function performs a signature comparison with the mmio address io_addr. and bestie, that address should have been obtained by ioremap — like, that's the vibe it expects. 🫶

it returns 1 on a match. slay. ✅

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🔥 SEE ALSO 🔥

kernel file ./lib/check_signature.c — go read it, it's giving source code energy. 📖💜

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okay that's the whole page, bestie! source/version: ./lib, date: October 2026, and this iconic manual page is check_signature(9) — byeee! 🫶💖🎀