/etc/apparmor.d/lxc/lxc-default-cgns is in lxc-common 2.0.0-0ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 | # Do not load this file. Rather, load /etc/apparmor.d/lxc-containers, which
# will source all profiles under /etc/apparmor.d/lxc
profile lxc-container-default-cgns flags=(attach_disconnected,mediate_deleted) {
#include <abstractions/lxc/container-base>
# the container may never be allowed to mount devpts. If it does, it
# will remount the host's devpts. We could allow it to do it with
# the newinstance option (but, right now, we don't).
deny mount fstype=devpts,
mount fstype=cgroup -> /sys/fs/cgroup/**,
}
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