--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/nio/channels/spi/SelectorProvider/inheritedChannel/UnixDomainSocket.java	Fri Nov 30 10:29:58 2018 +0000
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * A simplified Unix domain socket which can read and write bytes at a time
+ * used for simulating external launchers which use UNIX sockets to talk
+ * the VM.
+ */
+
+import java.io.IOException;
+
+public class UnixDomainSocket {
+
+    static {
+        System.loadLibrary("InheritedChannel");
+        init();
+    }
+
+    private final int fd;
+
+    public UnixDomainSocket(int fd) {
+        this.fd = fd;
+    }
+
+    public int read() throws IOException {
+        return read0(fd);
+    }
+
+    public void write(int w) throws IOException {
+        write0(fd, w);
+    }
+
+    public void close() {
+        close0(fd);
+    }
+
+    public int fd() {
+        return fd;
+    }
+
+    public String toString() {
+        return "UnixDomainSocket: fd=" + Integer.toString(fd);
+    }
+
+    /* read and write bytes with UNIX domain sockets */
+
+    private static native int read0(int fd) throws IOException;
+    private static native void write0(int fd, int w) throws IOException;
+    private static native void close0(int fd);
+    private static native void init();
+    public static native UnixDomainSocket[] socketpair();
+}
+