caddr_t           370 libdb/btree.h  	caddr_t	  bt_cmap;		/**< R: current point in mapped space */
caddr_t           371 libdb/btree.h  	caddr_t	  bt_smap;		/**< R: start of mapped space */
caddr_t           372 libdb/btree.h  	caddr_t   bt_emap;		/**< R: end of mapped space */