lxcfs: better fs behavior on /var/lib/lxcfs
lxcfs: better fs behavior on /var/lib/lxcfs

return -EPERM for mkdir(), rmdir(), chown(), chmod() on top directory
/var/lib/lxcfs.

Signed-off-by: Christian Brauner <b487c2d908f9548b106d14dc6d7b88a1fc58d1d6@suse.de>

Xeno22/lxcfs,Xeno22/lxcfs