net: sockets: Simplify common getsockname() implementation

Simplify common `getsockname()` implementation by using VTABLE_CALL()
macro, in the same way as other socket calls do. This additionally
allows to cover the case, when `getsockname()` is not implemnented by
particular socket implementation, preventing the crash.

Signed-off-by: Robert Lubos <[email protected]>

Author: rlubos

subsys/net/lib/sockets/sockets.c

@@ -1991,26 +1991,7 @@ int zsock_getsockname_ctx(struct net_context *ctx, struct sockaddr *addr,
 int z_impl_zsock_getsockname(int sock, struct sockaddr *addr,
 			     socklen_t *addrlen)
 {
-	const struct socket_op_vtable *vtable;
-	struct k_mutex *lock;
-	void *ctx;
-	int ret;
-
-	ctx = get_sock_vtable(sock, &vtable, &lock);
-	if (ctx == NULL) {
-		errno = EBADF;
-		return -1;
-	}
-
-	NET_DBG("getsockname: ctx=%p, fd=%d", ctx, sock);
-
-	(void)k_mutex_lock(lock, K_FOREVER);
-
-	ret = vtable->getsockname(ctx, addr, addrlen);
-
-	k_mutex_unlock(lock);
-
-	return ret;
+	VTABLE_CALL(getsockname, sock, addr, addrlen);
 }
 
 #ifdef CONFIG_USERSPACE