1 files changed, 18 insertions, 10 deletions
diff --git a/fs/wrapfs/readonlyfs.py b/fs/wrapfs/readonlyfs.py
index 5714745..426e143 100644
--- a/fs/wrapfs/readonlyfs.py
+++ b/fs/wrapfs/readonlyfs.py
@@ -10,44 +10,52 @@ from fs.base import NoDefaultMeta
 from fs.wrapfs import WrapFS
 from fs.errors import UnsupportedError, NoSysPathError
 
+
 class ReadOnlyFS(WrapFS):
     """ Makes a FS object read only. Any operation that could potentially modify
     the underlying file system will throw an UnsupportedError
-    
+
     Note that this isn't a secure sandbox, untrusted code could work around the
     read-only restrictions by getting the base class. Its main purpose is to
     provide a degree of safety if you want to protect an FS object from
     accidental modification.
-    
+
     """
-    
+
     def getmeta(self, meta_name, default=NoDefaultMeta):
         if meta_name == 'read_only':
             return True
         return self.wrapped_fs.getmeta(meta_name, default)
-        
+
     def hasmeta(self, meta_name):
         if meta_name == 'read_only':
             return True
         return self.wrapped_fs.hasmeta(meta_name)
-        
+
     def getsyspath(self, path, allow_none=False):
         """ Doesn't technically modify the filesystem but could be used to work
         around read-only restrictions. """
         if allow_none:
             return None
         raise NoSysPathError(path)
-    
-    def open(self, path, mode='r', **kwargs):
+
+    def open(self, path, mode='r', buffering=-1, encoding=None, errors=None, newline=None, line_buffering=False, **kwargs):
         """ Only permit read access """
         if 'w' in mode or 'a' in mode or '+' in mode:
             raise UnsupportedError('write')
-        return super(ReadOnlyFS, self).open(path, mode, **kwargs)
-        
+        return super(ReadOnlyFS, self).open(path,
+                                            mode=mode,
+                                            buffering=buffering,
+                                            encoding=encoding,
+                                            errors=errors,
+                                            newline=newline,
+                                            line_buffering=line_buffering,
+                                            **kwargs)
+
     def _no_can_do(self, *args, **kwargs):
         """ Replacement method for methods that can modify the file system """
         raise UnsupportedError('write')
-      
+
     move = _no_can_do
     movedir = _no_can_do
     copy = _no_can_do