title: Native sources in the JDK src.zip
body: <p>I have openjdk-8-source installed on my system (Ubuntu 16.04). I have unzipped the <code>src.zip</code>, however I cannot seem to find the sources for a lot of the native methods (specifically <code>sun.nio.ch.FileDispatcherImpl#lock0</code>). Does anyone know where it is located in the <code>src.zip</code>? I've looked in multiple places, and even tried looking for the source files by extension, but nothing turned up. </p>