pos += afhi_size;
PARA_DEBUG_LOG("size: %zu, chunks start at %d\n", size, pos);
write_u16(buf + AFTROW_CHUNKS_OFFSET_POS, pos);
pos += afhi_size;
PARA_DEBUG_LOG("size: %zu, chunks start at %d\n", size, pos);
write_u16(buf + AFTROW_CHUNKS_OFFSET_POS, pos);