int cg_pid_get_unit(pid_t pid, char **unit);
int cg_pid_get_user_unit(pid_t pid, char **unit);
+int cgroup_to_unit(char *cgroup, char **unit);
+
char **cg_shorten_controllers(char **controllers);
+
+int cg_controller_from_attr(const char *attr, char **controller);