caam_rsa_cou...eading_zeros(9)

💅 caam_rsa_count_leading_zeros(9) — a Kernel API Manual moment

okay so this is a page from the Kernel API Manual, bestie, and the star of the show is caam_rsa_count_leading_zeros — which is lowkey just out here counting leading zeros for you 🎀

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✨ NAME ✨

caam_rsa_count_leading_zeros — count leading zeros, need it to strip, from a given scatterlist 💖

(no fr, that's what it does: it does the counting, and the whole reason it exists is so those zeros can get stripped off a scatterlist. iconic behaviour honestly.)

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🌸 SYNOPSIS 🌸

int caam_rsa_count_leading_zeros (struct scatterlist *sgl , unsigned int nbytes , unsigned int flags );

it hands you back an int, periodt. 💅

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🦋 ARGUMENTS 🦋

• sgl — the scatterlist you're counting zeros from 🧚 like, this is your main character, the data source, the whole vibe.
• nbytes — number of zeros, in bytes, to strip 🍓 yes bestie, in bytes, that unit matters.
• flags — operation flags ⭐ the little knobs that tell it how to behave.

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👑 SEE ALSO 👑

• Kernel file ./drivers/crypto/caam/caampkc.c 📁 (the whole friend group lives here)
• caam_read_rsa_crt(9)
• caam_read_raw_data(9)

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💀 quick reminder that sgl is a scatterlist and not a plain old buffer — do not come in here treating it like a char array, i'm begging 🙈

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and that's the tea 🫶 this gem comes to you from ./drivers/crypto/caam, dated October 2026 — see you in the next one, mwah 💜✨