131         int length = strlen(parameter);  in build_parameters()  local
135         if (length == 2 && parameter[0] == '-') {  in build_parameters()
137             --length;  in build_parameters()
142         if (offset + length >= size) {  in build_parameters()
149         memcpy(&parameters[offset + 1], parameter, length);  in build_parameters()
150         offset += 1 + length;  in build_parameters()
220             int length = read(interface, packet, sizeof(packet));  in main()  local
221             if (length > 0) {  in main()
223                 send(tunnel, packet, length, MSG_NOSIGNAL);  in main()
235             length = recv(tunnel, packet, sizeof(packet), 0);  in main()
236             if (length == 0) {  in main()
239             if (length > 0) {  in main()
243                     write(interface, packet, length);  in main()