--- a/src/java.base/unix/classes/sun/nio/fs/UnixChannelFactory.java	Thu May 28 00:44:10 2020
+++ b/src/java.base/unix/classes/sun/nio/fs/UnixChannelFactory.java	Wed May 20 19:29:11 2020
@@ -103,7 +103,17 @@
         }
     }
 
+
     /**
+     * Constructs a file channel from an existing (open) file descriptor
+     */
+    static FileChannel newFileChannel(int fd, String path, boolean reading, boolean writing) {
+        FileDescriptor fdObj = new FileDescriptor();
+        fdAccess.set(fdObj, fd);
+        return FileChannelImpl.open(fdObj, path, reading, writing, false, null);
+    }
+
+    /**
      * Constructs a file channel by opening a file using a dfd/path pair
      */
     static FileChannel newFileChannel(int dfd,