EXT2_DIND_BLOCK
#define EXT2_TIND_BLOCK (EXT2_DIND_BLOCK + 1)
nr = i_data[EXT2_DIND_BLOCK];
i_data[EXT2_DIND_BLOCK] = 0;
case EXT2_DIND_BLOCK:
offsets[n++] = EXT2_DIND_BLOCK;