var cgroupRootLock … var cgroupRoot … const defaultCgroupRoot … func initPaths(cg *configs.Cgroup) (map[string]string, error) { … } func tryDefaultCgroupRoot() string { … } // rootPath finds and returns path to the root of the cgroup hierarchies. func rootPath() (string, error) { … } func innerPath(c *configs.Cgroup) (string, error) { … } func subsysPath(root, inner, subsystem string) (string, error) { … } func apply(path string, pid int) error { … }