4365 	int prog_fd, link_fd, err;  in probe_perf_link()  local
4379 	link_fd = bpf_link_create(prog_fd, -1, BPF_PERF_EVENT, NULL);  in probe_perf_link()
4382 	if (link_fd >= 0)  in probe_perf_link()
4383 		close(link_fd);  in probe_perf_link()
4386 	return link_fd < 0 && err == -EBADF;  in probe_perf_link()
9050 	int prog_fd, link_fd = -1, err;  in bpf_program__attach_perf_event_opts()  local
9078 		link_fd = bpf_link_create(prog_fd, pfd, BPF_PERF_EVENT, &link_opts);  in bpf_program__attach_perf_event_opts()
9079 		if (link_fd < 0) {  in bpf_program__attach_perf_event_opts()
9086 		link->link.fd = link_fd;  in bpf_program__attach_perf_event_opts()
9114 	if (link_fd >= 0)  in bpf_program__attach_perf_event_opts()
9115 		close(link_fd);  in bpf_program__attach_perf_event_opts()
9585 	int prog_fd, link_fd;  in bpf_program__attach_fd()  local
9599 	link_fd = bpf_link_create(prog_fd, target_fd, attach_type, &opts);  in bpf_program__attach_fd()
9600 	if (link_fd < 0) {  in bpf_program__attach_fd()
9601 		link_fd = -errno;  in bpf_program__attach_fd()
9605 			libbpf_strerror_r(link_fd, errmsg, sizeof(errmsg)));  in bpf_program__attach_fd()
9606 		return libbpf_err_ptr(link_fd);  in bpf_program__attach_fd()
9608 	link->fd = link_fd;  in bpf_program__attach_fd()
9669 	int prog_fd, link_fd;  in bpf_program__attach_iter()  local
9689 	link_fd = bpf_link_create(prog_fd, target_fd, BPF_TRACE_ITER,  in bpf_program__attach_iter()
9691 	if (link_fd < 0) {  in bpf_program__attach_iter()
9692 		link_fd = -errno;  in bpf_program__attach_iter()
9695 			prog->name, libbpf_strerror_r(link_fd, errmsg, sizeof(errmsg)));  in bpf_program__attach_iter()
9696 		return libbpf_err_ptr(link_fd);  in bpf_program__attach_iter()
9698 	link->fd = link_fd;  in bpf_program__attach_iter()