macosx-10.10/pdisk-9/partition_map.c

382     entry->prev_on_disk = NULL;
1223 	p->prev_on_disk = entry->prev_on_disk;
1225     if (entry->prev_on_disk != NULL) {
1226 	entry->prev_on_disk->next_on_disk = p;
1229     entry->prev_on_disk = NULL;
1246 	    cur->prev_on_disk = entry;
1248 	entry->prev_on_disk = NULL;
1256 		entry->prev_on_disk = cur;
1258 		    entry->next_on_disk->prev_on_disk = entry;