Use kernel-provided __NR_getrandom syscall number - #155762
Open
jjhelmus wants to merge 1 commit into
Open
Conversation
Replace libc's SYS_getrandom with the kernel-provided __NR_getrandom in configure checks, os.getrandom(), and interpreter entropy handling.
jjhelmus
requested review from
AA-Turner,
corona10,
emmatyping,
erlend-aasland and
itamaro
as code owners
August 13, 2026 22:24
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Replace libc's
SYS_getrandomwith the kernel-provided__NR_getrandomin configure checks,os.getrandom(), and interpreter entropy handling.This aligns with other syscall usage in the POSIX module.
This makes
os.getrandom()available when building against an older glibc that was itself built with kernel headers lacking the syscall, provided the current kernel headers define __NR_getrandom. This type of build is done in python-build-standalone, astral-sh/python-build-standalone#1188.