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chown cgroup only when new cgroupns also specified
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@frasertweedale
frasertweedale committed Sep 23, 2021
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Expand Up @@ -206,6 +206,11 @@ Runtimes SHOULD NOT change the ownership of container cgroups when
cgroups v1 is in use. Cgroup delegation is not secure in cgroups
v1.

A runtime SHOULD NOT change the ownership of a container cgroup
unless it will also create a new cgroup namespace for the container.
Typically this occurs when the `linux.namespaces` array contains an
object with `type` equal to `"cgroup"` and `path` unset.

Runtimes SHOULD change the cgroup ownership if and only if the
cgroup filesystem is to be mounted read/write; that is, when the
configuration's `mounts` array contains an object where:
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