$NetBSD: patch-al,v 1.6 2017/08/14 00:02:16 ryoon Exp $

DragonFly support.

--- jdk/src/solaris/classes/sun/nio/fs/DefaultFileSystemProvider.java.orig	2017-08-13 05:55:21.000000000 +0000
+++ jdk/src/solaris/classes/sun/nio/fs/DefaultFileSystemProvider.java
@@ -28,6 +28,8 @@ package sun.nio.fs;
 import java.nio.file.spi.FileSystemProvider;
 import java.security.AccessController;
 import java.security.PrivilegedAction;
+import java.util.Set;
+import java.util.HashSet;
 import sun.security.action.GetPropertyAction;
 
 /**
@@ -37,6 +39,14 @@ import sun.security.action.GetPropertyAc
 public class DefaultFileSystemProvider {
     private DefaultFileSystemProvider() { }
 
+    private static final Set<String> validFileSystemProviders
+        = new HashSet<String>();
+    static {
+        validFileSystemProviders.add("sun.nio.fs.SolarisFileSystemProvider");
+        validFileSystemProviders.add("sun.nio.fs.LinuxFileSystemProvider");
+        validFileSystemProviders.add("sun.nio.fs.BsdFileSystemProvider");
+    }
+
     @SuppressWarnings("unchecked")
     private static FileSystemProvider createProvider(final String cn) {
         return AccessController
@@ -64,13 +74,17 @@ public class DefaultFileSystemProvider {
     public static FileSystemProvider create() {
         String osname = AccessController
             .doPrivileged(new GetPropertyAction("os.name"));
+	String fileSystemProvider = System
+	    .getProperty("java.nio.file.spi.DefaultFileSystemProvider");
+	if (validFileSystemProviders.contains(fileSystemProvider))
+	    return createProvider(fileSystemProvider);
         if (osname.equals("SunOS"))
             return createProvider("sun.nio.fs.SolarisFileSystemProvider");
         if (osname.equals("Linux"))
             return createProvider("sun.nio.fs.LinuxFileSystemProvider");
         if (osname.equals("Darwin") || osname.contains("OS X"))
             return createProvider("sun.nio.fs.MacOSXFileSystemProvider");
-        if (osname.endsWith("BSD"))
+        if (osname.endsWith("BSD") || osname.equals("DragonFly"))
             return createProvider("sun.nio.fs.BsdFileSystemProvider");
         if (osname.equals("AIX") || osname.equals("OS400"))
             return createProvider("sun.nio.fs.AixFileSystemProvider");