MAPBUF
if (! devread (bnum, offset * sizeof (int), bsize, (char *) MAPBUF))
return (((int *) MAPBUF)[((file_block - NDADDR) % NINDIR (SUPERBLOCK))
if (! devread (bnum, offset * sizeof (int), bsize, (char *) MAPBUF))
return (((grub_int64_t *) MAPBUF)[((file_block - NDADDR) % NINDIR (SUPERBLOCK))