part_block: fix handling of chained EBR's

Fixes genodelabs#3223.
cnuke · Mar 10, 2019 · e95e0d1 · e95e0d1
1 parent df7a0bc
commit e95e0d1
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/repos/os/src/server/part_block/mbr.h b/repos/os/src/server/part_block/mbr.h
@@ -84,6 +84,7 @@ struct Mbr_partition_table : public Block::Partition_table
 		{
 			Partition_record *r = record;
 			unsigned lba = r->_lba;
+			unsigned last_lba = 0;
 
 			/* first logical partition number */
 			int nr = 5;
@@ -106,7 +107,9 @@ struct Mbr_partition_table : public Block::Partition_table
 			 * (relative form this EBR)
 			 */
 			r = &(ebr->_records[1]);
-			lba += ebr->_records[1]._lba;
+			lba += ebr->_records[1]._lba - last_lba;
+
+			last_lba = ebr->_records[1]._lba;
 
 			} while (r->valid());
 		}