int main(int argc, char** argv) {
  long ret;
  struct lkl_disk disk;

  disk.fd = open("/tmp/images/ext4.img", O_RDONLY);
  if (disk.fd < 0) {
    printf("could not open image: %s\n", strerror(errno));
    return -1;
  }
  disk.ops = NULL;

  ret = lkl_init(&lkl_host_ops);
  if (ret < 0) {
    fprintf(stderr, "lkl init failed: %s\n", lkl_strerror(ret));
    return -1;
  }

  ret = lkl_disk_add(&disk);
  if (ret < 0) {
    fprintf(stderr, "can't add disk: %s\n", lkl_strerror(ret));
    return -1;
  }
  disk_id = ret;
  printf("added disk id: %u\n", disk_id);

  printf("starting kernel\n");
  /* ret = lkl_start_kernel("mem=2048M kasan.fault=panic printflevel=8"); */
  ret = lkl_start_kernel("mem=1024M printflevel=8");
  if (ret < 0) {
    printf("lkl_start_kernel failed: %s\n", lkl_strerror(ret));
    lkl_cleanup();
    return -1;
  }
  printf("lkl kernel started\n");

  ret = lkl_mount_dev(disk_id, 0, "ext4", LKL_MS_RDONLY, NULL, mpoint, sizeof(mpoint));
  if (ret) {
    fprintf(stderr, "can't mount disk: %s\n", lkl_strerror(ret));
    return -1;
  }

  printf("mount point: %s\n", mpoint);

  ret = lkl_sys_chdir(mpoint);
  if (ret) {
    fprintf(stderr, "can't chdir to %s: %s\n", mpoint,
        lkl_strerror(ret));
    return -1;
  }
}