rem: block_size_size = 4;
add: inode_number_width = 0; block_size_width = 0; nlink_width = 0; owner_width = 0; group_width = 0; author_width = 0; major_device_number_width = 0; minor_device_number_width = 0; file_size_width = 0;
context: clear_files (void){  register int i;  for (i = 0; i < files_index; i++)    {      free (files[i].name);      if (files[i].linkname)	free (files[i].linkname);    }  files_index = 0;  block_size_size = 4;}