180 				p_err("duplicated argument: %s", *argv);  in do_show()
186 			p_err("expected no more arguments, 'effective', got: '%s'?",  in do_show()
194 		p_err("can't open cgroup %s", path);  in do_show()
200 		p_err("can't query bpf programs attached to %s: %s",  in do_show()
253 		p_err("can't open cgroup %s: %s", fpath, strerror(errno));  in do_show_tree_fn()
259 		p_err("can't query bpf programs attached to %s: %s",  in do_show_tree_fn()
327 			p_err("cgroup v2 isn't mounted");  in do_show_tree()
337 					p_err("duplicated argument: %s", *argv);  in do_show_tree()
343 				p_err("expected no more arguments, 'effective', got: '%s'?",  in do_show_tree()
360 		p_err("can't iterate over %s: %s", cgroup_root,  in do_show_tree()
388 		p_err("too few parameters for cgroup attach");  in do_attach()
394 		p_err("can't open cgroup %s", argv[0]);  in do_attach()
400 		p_err("invalid attach type");  in do_attach()
416 			p_err("unknown option: %s", argv[i]);  in do_attach()
422 		p_err("failed to attach program");  in do_attach()
446 		p_err("too few parameters for cgroup detach");  in do_detach()
452 		p_err("can't open cgroup %s", argv[0]);  in do_detach()
458 		p_err("invalid attach type");  in do_detach()
469 		p_err("failed to detach program");  in do_detach()