bpf/bpftool/prog.c

221 	struct bpf_prog_info prog_info;
232 	memset(&prog_info, 0, sizeof(prog_info));
233 	prog_info_len = sizeof(prog_info);
234 	ret = bpf_prog_get_info_by_fd(prog_fd, &prog_info, &prog_info_len);
238 	if (!prog_info.nr_map_ids)
241 	map_ids = calloc(prog_info.nr_map_ids, sizeof(__u32));
245 	nr_maps = prog_info.nr_map_ids;
246 	memset(&prog_info, 0, sizeof(prog_info));
247 	prog_info.nr_map_ids = nr_maps;
248 	prog_info.map_ids = ptr_to_u64(map_ids);
249 	prog_info_len = sizeof(prog_info);
251 	ret = bpf_prog_get_info_by_fd(prog_fd, &prog_info, &prog_info_len);
255 	for (i = 0; i < prog_info.nr_map_ids; i++) {