with AT_EMPTY_PATH (or via procfs using AT_SYMLINK_FOLLOW ) even if the filewith AT_EMPTY_PATH (or via procfs using AT_SYMLINK_FOLLOW ) even if the filewith AT_EMPTY_PATH (or via procfs using AT_SYMLINK_FOLLOW ) even if the filesymbolic link. If procfs is mounted, this can be used as an alternativesymbolic link. If procfs is mounted, this can be used as an alternative