Thread (1 message) 1 message, 1 author, 2020-11-24

Re: [PATCH] syscalls: Document OCI seccomp filter interactions & workaround

From: Florian Weimer <hidden>
Date: 2020-11-24 13:06:27
Also in: linux-doc, lkml

* Aleksa Sarai:
As I mentioned in the runc thread[1], this is really down to Docker's
default policy configuration. The EPERM-everything behaviour in OCI was
inherited from Docker, and it boils down to not having an additional
seccomp rule which does ENOSYS for unknown syscall numbers (Docker can
just add the rule without modifying the OCI runtime-spec -- so it's
something Docker can fix entirely on their own). I'll prepare a patch
for Docker this week.
Appreciated, thanks.
IMHO it's also slightly overkill to change the kernel API design
guidelines in response to this issue.

[1]: https://github.com/opencontainers/runc/issues/2151
Won't this cause docker to lose OCI compliance?  Or is the compliance
testing not that good?

Thanks,
Florian
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