+int setup_tmpdirs(const char *unit_id,
+ char **tmp_dir,
+ char **var_tmp_dir);
+
+int setup_namespace(char **read_write_dirs,
+ char **read_only_dirs,
+ char **inaccessible_dirs,
+ char *tmp_dir,
+ char *var_tmp_dir,
+ bool private_tmp,
+ unsigned mount_flags);