177 				p_err("duplicated argument: %s", *argv);  in do_show()
183 			p_err("expected no more arguments, 'effective', got: '%s'?",  in do_show()
191 		p_err("can't open cgroup %s", path);  in do_show()
239 		p_err("can't open cgroup %s: %s", fpath, strerror(errno));  in do_show_tree_fn()
247 			p_err("can't query bpf programs attached to %s: %s",  in do_show_tree_fn()
322 			p_err("cgroup v2 isn't mounted");  in do_show_tree()
332 					p_err("duplicated argument: %s", *argv);  in do_show_tree()
338 				p_err("expected no more arguments, 'effective', got: '%s'?",  in do_show_tree()
355 		p_err("can't iterate over %s: %s", cgroup_root,  in do_show_tree()
383 		p_err("too few parameters for cgroup attach");  in do_attach()
389 		p_err("can't open cgroup %s", argv[0]);  in do_attach()
395 		p_err("invalid attach type");  in do_attach()
411 			p_err("unknown option: %s", argv[i]);  in do_attach()
417 		p_err("failed to attach program");  in do_attach()
441 		p_err("too few parameters for cgroup detach");  in do_detach()
447 		p_err("can't open cgroup %s", argv[0]);  in do_detach()
453 		p_err("invalid attach type");  in do_detach()
464 		p_err("failed to detach program");  in do_detach()