__vdso_getrandom(9)

💅 __vdso_getrandom (9) 💅

okay so bestie, welcome to the Kernel API Manual — this one's a tiny little arch-specific page and it's honestly giving "short and sweet, no notes" ✨

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🌸 NAME 🌸

__vdso_getrandom — the architecture-specific vDSO implementation of the getrandom() syscall. yep, that's it, that's the whole vibe 🎀

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✨ SYNOPSIS ✨

ssize_t __vdso_getrandom (void *buffer , size_t len , unsigned int flags
, void *opaque_state , size_t opaque_len );

like, look at that signature. five whole arguments. she's got range 💅

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🫶 ARGUMENTS 🫶

literally every single one of these gets handed straight off to __cvdso_getrandom — no gatekeeping, no extra processing, just passing the aux fr fr:

• buffer — passed to __cvdso_getrandom.
• len — passed to __cvdso_getrandom.
• flags — passed to __cvdso_getrandom.
• opaque_state — passed to __cvdso_getrandom.
• opaque_len — passed to __cvdso_getrandom;

(not the semicolon on the last one lmaooo, leaving it exactly as-is because we don't touch the source 😭)

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🦋 DESCRIPTION 🦋

so what does this function actually do? bestie. it makes a single call to __cvdso_getrandom. that's the whole lore. 📖

if you want the actual details, the documentation for __cvdso_getrandom is the one to consult — she's the main character here, this page is more like her very chill understudy 💜

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🔥 RETURN 🔥

whatever __cvdso_getrandom returns. that's the return value. periodt 👑

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🌈 SEE ALSO 🌈

go check these out, iykyk:

• Kernel file ./include/vdso/getrandom.h
• struct vgetrandom_state(9)
• __arch_chacha20_blocks_nostack(9)

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and that's the whole page, bestie, hope it slayed for you 💖 this cutie lives in ./include/vdso, and the version/date on the tin says October 2026 — so like, from the future?? iconic honestly 🌟 bye pookie 🫶💫