int cg_install_release_agent(const char *controller, const char *agent);
int cg_is_empty(const char *controller, const char *path, bool ignore_self);
+int cg_is_empty_by_spec(const char *spec, bool ignore_self);
int cg_is_empty_recursive(const char *controller, const char *path, bool ignore_self);
int cg_get_user_path(char **path);