ws2_32: Fix UDP LINGER support in getsockopt.

dlls/ws2_32/socket.c

@@ -2575,7 +2575,8 @@ INT WINAPI WS_getsockopt(SOCKET s, INT level,
         case WS_SO_LINGER:
         {
             struct linger lingval;
-            unsigned int len = sizeof(struct linger);
+            int so_type;
+            unsigned int len = sizeof(struct linger), slen = sizeof(int);
 
             /* struct linger and LINGER have different sizes */
             if (!optlen || *optlen < sizeof(LINGER) || !optval)
@@ -2586,7 +2587,12 @@ INT WINAPI WS_getsockopt(SOCKET s, INT level,
             if ( (fd = get_sock_fd( s, 0, NULL )) == -1)
                 return SOCKET_ERROR;
 
-            if (getsockopt(fd, SOL_SOCKET, SO_LINGER, &lingval, &len) != 0 )
+            if ((getsockopt(fd, SOL_SOCKET, SO_TYPE, &so_type, &slen) == 0 && so_type == SOCK_DGRAM))
+            {
+                SetLastError(WSAENOPROTOOPT);
+                ret = SOCKET_ERROR;
+            }
+            else if (getsockopt(fd, SOL_SOCKET, SO_LINGER, &lingval, &len) != 0)
             {
                 SetLastError((errno == EBADF) ? WSAENOTSOCK : wsaErrno());
                 ret = SOCKET_ERROR;

dlls/ws2_32/tests/sock.c

@@ -2630,12 +2630,12 @@ static void test_extendedSocketOptions(void)
         "got %d with %d and optval: 0x%x/%d (expected SOCKET_ERROR with WSAEINVAL)\n",
         ret, WSAGetLastError(), optval, optval);
 
+    SetLastError(0xdeadbeef);
     optlen = sizeof(LINGER);
     ret = getsockopt(sock, SOL_SOCKET, SO_LINGER, (char *)&linger_val, &optlen);
-    todo_wine{
-    ok(ret == SOCKET_ERROR, "getsockopt should fail for UDP sockets but return value is 0x%08x\n", ret);
-    }
-
+    ok( (ret == SOCKET_ERROR) && (WSAGetLastError() == WSAENOPROTOOPT), 
+        "getsockopt should fail for UDP sockets setting last error to WSAENOPROTOOPT, got %d with %d\n", 
+        ret, WSAGetLastError());
     closesocket(sock);
 
     if((sock = socket(PF_INET, SOCK_STREAM, IPPROTO_IP)) == INVALID_SOCKET) {