EXT2_IND_BLOCK
#define EXT2_DIND_BLOCK (EXT2_IND_BLOCK + 1)
nr = i_data[EXT2_IND_BLOCK];
i_data[EXT2_IND_BLOCK] = 0;
case EXT2_IND_BLOCK:
offsets[n++] = EXT2_IND_BLOCK;