On some machines when setting the SELinux key labels to "", we are seeing
failures that cause runc to fail. Even if SELinux is disabled.
This check will ignore callers calling SELinux Set*Label functions with ""
when SELinux is disabled.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Work is ongoing in the kernel to support different kernel
keyrings per user namespace. We want to allow SELinux to manage
kernel keyrings inside of the container.
Currently when runc creates the kernel keyring it gets the label which runc is
running with ususally `container_runtime_t`, with this change the kernel keyring
will be labeled with the container process label container_t:s0:C1,c2.
Container running as container_t:s0:c1,c2 can manage keyrings with the same label.
This change required a revendoring or the SELinux go bindings.
github.com/opencontainers/selinux.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
