--- a/jdk/src/solaris/classes/sun/nio/fs/UnixFileSystemProvider.java	Tue Jan 21 09:17:23 2014 +0100
+++ b/jdk/src/solaris/classes/sun/nio/fs/UnixFileSystemProvider.java	Tue Jan 21 09:33:48 2014 +0000
@@ -375,11 +375,12 @@
         UnixPath dir = UnixPath.toUnixPath(obj);
         dir.checkWrite();
 
-        int mode = UnixFileModeAttribute
-            .toUnixMode(UnixFileModeAttribute.ALL_PERMISSIONS, attrs);
+        int mode = UnixFileModeAttribute.toUnixMode(UnixFileModeAttribute.ALL_PERMISSIONS, attrs);
         try {
             mkdir(dir, mode);
         } catch (UnixException x) {
+            if (x.errno() == EISDIR)
+                throw new FileAlreadyExistsException(dir.toString());
             x.rethrowAsIOException(dir);
         }
     }