int cg_get_root_path(char **path);
int cg_get_system_path(char **path);
int cg_get_user_path(char **path);
-int cg_get_machine_path(char **path);
+int cg_get_machine_path(const char *machine, char **path);
int cg_path_get_session(const char *path, char **session);
int cg_path_get_owner_uid(const char *path, uid_t *uid);
int cg_controller_from_attr(const char *attr, char **controller);
char *cg_escape(const char *p);
-char *cg_unescape(const char *p);
+char *cg_unescape(const char *p) _pure_;
bool cg_controller_is_valid(const char *p, bool allow_named);