@@ -181,6 +181,13 @@ class CombinedFS(Operations):

 			except OSError as ose:

 				raise FuseOSError(ose.errno)

+	def register_fd(self, file_descriptor):

+		with self.filedesc_lock:

+			self.filedesc_index += 1

+			new_fd_index = self.filedesc_index

+			self.filedesc[new_fd_index] = file_descriptor

+		return new_fd_index

+

 	# Filesystem methods

 	def access(self, path, mode):

@@ -274,11 +281,7 @@ class CombinedFS(Operations):

 			'filename': filename,

 			'file_spec': file_spec,

 		}

-		with self.filedesc_lock:

-			self.filedesc_index += 1

-			new_fd_index = self.filedesc_index

-			self.filedesc[new_fd_index] = new_fd

-		return new_fd_index

+		return self.register_fd(new_fd)

 	def read(self, path, length, offset, fh):

 		filedesc = self.filedesc.get(fh)