92     def __init__(self, backing_file_name=None):  argument
99         self.backing_file_name = FieldsList()
108         self.create_header(cluster_bits, backing_file_name)
109         self.set_backing_file_name(backing_file_name)
118                      self.backing_file_name, self.l1_table, self.l2_tables,
121     def create_header(self, cluster_bits, backing_file_name=None):  argument
164         if (backing_file_name is not None) and \
165            (free_space >= len(backing_file_name)):
166             self.header['backing_file_size'][0].value = len(backing_file_name)
168                                     self.cluster_size - len(backing_file_name)
170     def set_backing_file_name(self, backing_file_name=None):  argument
174         if (backing_file_name is not None) and \
176             data_len = len(backing_file_name)
178             self.backing_file_name = FieldsList([
180                  backing_file_name, 'bf_name']
601 def create_image(test_img_path, backing_file_name=None, backing_file_fmt=None,  argument
604     image = Image(backing_file_name.encode())