golang/go

runtime: use .openbsd.randomdata for startupRand

Open

#69,781 opened on Oct 4, 2024

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NeedsFixOS-OpenBSDcompiler/runtimehelp wanted

Description

OpenBSD has its version of AT_RANDOM, the .openbsd.randomdata ELF section documented at SPECS.randomdata. We should use that instead of reading from /dev/urandom.

Contributor guide

Tech stack
go
Domain
backendsecurity
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
blocked
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Understanding of Go runtimeKnowledge of ELF sectionsFamiliarity with OpenBSD specifics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25
Research direction
Investigate the Go runtime's startupRand implementation, likely in the runtime package's OpenBSD specific files. The goal is to replace reading from /dev/urandom with the .openbsd.randomdata ELF section as specified by SPECS.randomdata. Review the existing code for osinit or random number initialization on OpenBSD and implement the change.