void cprsave(const char *file, CprMode mode, Error **errp)
  {
      int ret = 0;
**    QEMUFile *f;
**    int saved_vm_running = runstate_is_running();
      bool restart = (mode == CPR_MODE_RESTART);
      bool reboot = (mode == CPR_MODE_REBOOT);
  
      if (reboot && qemu_ram_volatile(errp)) {
          return;
      }
  
      if (restart && xen_enabled()) {
          error_setg(errp, "xen does not support cprsave restart");
          return;
      }
  
      if (migrate_colo_enabled()) {
          error_setg(errp, "error: cprsave does not support x-colo");
          return;
      }
  
      if (replay_mode != REPLAY_MODE_NONE) {
          error_setg(errp, "error: cprsave does not support replay");
          return;
      }
  
      f = qf_file_open(file, O_CREAT | O_WRONLY | O_TRUNC, 0600, "cprsave", errp);
      if (!f) {
          return;
      }
  
**    ret = global_state_store();
**    if (ret) {
**        error_setg(errp, "Error saving global state");
**        qemu_fclose(f);
**        return;
**    }
      if (runstate_check(RUN_STATE_SUSPENDED)) {
          /* Update timers_state before saving.  Suspend did not so do. */
          cpu_disable_ticks();
      }
**    vm_stop(RUN_STATE_SAVE_VM);
  
      cpr_is_active = true;
**    ret = qemu_save_device_state(f);
**    qemu_fclose(f);
**    if (ret < 0) {
**        error_setg(errp, "Error %d while saving VM state", ret);
**        goto err;
**    }
  
      if (reboot) {
          shutdown_action = SHUTDOWN_ACTION_POWEROFF;
          qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
      } else if (restart) {
          if (!qemu_chr_cpr_capable(errp)) {
              goto err;
          }
          if (vfio_cprsave(errp)) {
              goto err;
          }
          walkenv(FD_PREFIX, preserve_fd, 0);
          vhost_dev_reset_all();
          qemu_term_exit();
          setenv("QEMU_START_FREEZE", "", 1);
          qemu_system_exec_request();
      }
      goto done;
  
  err:
**    if (saved_vm_running) {
**        vm_start();
**    }
  done:
      cpr_is_active = false;
      return;
  }