upd2

netio.v

@@ -1,19 +1,13 @@
 module netio
 
-import sync
-
-fn init() {
-	netio_protoent_mutex = sync.new_mutex()
-}
-
-fn cleanup() {
-	netio_protoent_mutex.destroy()
-	unsafe { free(netio_protoent_mutex) }
-}
-
 // The socket address family type.
 // See [address_families(7)](https://www.man7.org/linux/man-pages/man7/address_families.7.html).
-pub type AddrFamily = u16
+pub type AddrFamily = int
+
+// The protocol number type.
+// See [protocols(5)](https://man7.org/linux/man-pages/man5/protocols.5.html),
+// and [getprotoent(3)](https://man7.org/linux/man-pages/man3/getprotoent.3.html) for details.
+pub type Protocol = int
 
 // The socket type.
 pub type SocketType = int