104 	{ .ptype=MBR_PTYPE_EXT_LBA, .desc="Extended partition, LBA" },
161  * Notes on the extended partition editor.
163  * The extended partition structure is actually a singly linked list.
166  * the following partition (relative to the start of the extended partition).
169  * track - very often 63.  The extended partitions themselves should
183  *           b      100     1000	extended LBA (type 15)
186  *           b      100      200	extended partition (type 5)
189  *           b      200      300	extended partition (type 5)
208 		    m, m->sector, m->extended);  in dump_mbr()
234 	} while ((m = m->extended));  in dump_mbr()
429 			 * if we start in the extended partition,  in find_mbr_space()
438 			for (me = m->extended; me != NULL; me = me->extended) {  in find_mbr_space()
564 			/* sanity check extended chain */  in read_mbr()
573 			/* Looks ok, link into extended chain */  in read_mbr()
574 			mbri->extended = ext;  in read_mbr()
575 			ext->extended = NULL;  in read_mbr()
712 		for (ext = mbri; ext != NULL; ext = ext->extended) {  in write_mbr()
735 	for (ext = mbri; ext != NULL; ext = ext->extended) {  in write_mbr()
741 		if (sector != 0 && ext->extended != NULL  in write_mbr()
742 		    && ext->extended->mbr.mbr_parts[0].mbrp_type  in write_mbr()
753 			ext = ext->extended;  in write_mbr()
976 	} while ((m = m->extended));  in mbr_calc_free_space()
1342 			for (me = m->extended; me != NULL; me = me->extended) {  in mbr_part_apply()
1470 	 * The extended partition can only change type or be  in type_can_change()
1475 	return primary && mb->extended == NULL;  in type_can_change()
1658 	for (m = m->extended; m != NULL; m = m->extended) {  in ext_part_good()
1709 		/* this partition becomes an extended one, apply alignment */  in mbr_set_part_info()
1724 			for (me = m->extended; me != NULL; me = me->extended) {  in mbr_set_part_info()
1841 	} while ((m = m->extended));  in mbr_find_netbsd()
1943 	while ((ext = mbri->extended)) {  in mbr_delete_all()
1944 		mbri->extended = ext->extended;  in mbr_delete_all()
1965  * extended MBRs "partition b" entries after addition/deletion
1971 	for (mbr_info_t *m = primary->extended; m != NULL; m = m->extended) {  in mbr_fixup_ext_chain()
1972 		if (m->extended == NULL) {  in mbr_fixup_ext_chain()
1977 			uint n_end, n_start = m->extended->sector;  in mbr_fixup_ext_chain()
1978 			if (m->extended->extended)  in mbr_fixup_ext_chain()
1979 				n_end = m->extended->extended->sector;  in mbr_fixup_ext_chain()
2003 	/* can not delete non-empty extended partitions */  in mbr_do_delete_part()
2005 	    && marg->parts->mbr.extended != NULL) {  in mbr_do_delete_part()
2016 		/* if deleting the primary extended partition, just kill it */  in mbr_do_delete_part()
2026 			for (mbr_info_t *m = marg->parts->mbr.extended;  in mbr_do_delete_part()
2028 				mbr_info_t *n = m->extended;  in mbr_do_delete_part()
2032 			marg->parts->mbr.extended = NULL;  in mbr_do_delete_part()
2035 		/* find the size of the primary extended partition */  in mbr_do_delete_part()
2049 		 * If we are in an extended partition chain, unlink this MBR,  in mbr_do_delete_part()
2050 		 * unless it is the very first one at the start of the extended  in mbr_do_delete_part()
2054 		if (marg->parts->mbr.extended == mb) {  in mbr_do_delete_part()
2056 			    &marg->parts->mbr.extended->mbr.mbr_parts[0];  in mbr_do_delete_part()
2063 			    last = p, p = p->extended)  in mbr_do_delete_part()
2071 			last->extended = p->extended;  in mbr_do_delete_part()
2073 			if (last == &marg->parts->mbr && last->extended &&  in mbr_do_delete_part()
2074 			    last->extended->extended == NULL &&  in mbr_do_delete_part()
2075 			    last->extended->mbr.mbr_parts[0].mbrp_type ==  in mbr_do_delete_part()
2078 				 * we deleted the last extended sector,  in mbr_do_delete_part()
2081 				free_mbr_info(last->extended);  in mbr_do_delete_part()
2082 				last->extended = NULL;  in mbr_do_delete_part()
2145 	} while ((m = m->extended));  in mbr_ptr_from_start()
2170 	} while ((m = m->extended));  in mbr_type_from_start()
2203 	/* do we have free primary slots and/or an extended partition? */  in mbr_add_part()
2220 		 * Do not allow a second extended partition  in mbr_add_part()
2227 	/* should this go into the extended partition? */  in mbr_add_part()
2231 		/* must fit into the extended partition */  in mbr_add_part()
2240 		for (last = m, m = m->extended; m != NULL;  in mbr_add_part()
2241 		    last = m, m = m->extended) {  in mbr_add_part()
2251 			/* new part needs to fit inside primary extended one */  in mbr_add_part()
2258 			/* new part needs to fit before next extended */  in mbr_add_part()
2308 				 * an extended MBR uses an unusual high  in mbr_add_part()
2334 				new_mbr->extended = m;  in mbr_add_part()
2355 				 * first extended mbr, but do not start  in mbr_add_part()
2357 				 * extended partition, we need to insert  in mbr_add_part()
2358 				 * another extended mbr at the start.  in mbr_add_part()
2360 				if (m == &parts->mbr && m->extended == NULL  in mbr_add_part()
2373 					m->extended = t;  in mbr_add_part()
2376 				new_mbr->extended = m->extended;  in mbr_add_part()
2377 				m->extended = new_mbr;  in mbr_add_part()
2381 		dump_mbr(&parts->mbr, "after adding in extended");  in mbr_add_part()
2452 			for (me = m->extended; me != NULL; me = me->extended) {  in mbr_add_part()
2676 	} while ((m = m->extended));  in mbr_free()
2684 	free_mbr_info(parts->mbr.extended);  in mbr_free()
2806 	} while ((m = m->extended));  in mbr_guess_root()
2883 		for (m = data->mbr; m != mb; m = m->extended)  in part_attr_set_str()
3109         	/* The extended partition isn't bootable */  in is_custom_attribute_writable()