func: int scsi_bus_legacy_handle_cmdline(SCSIBus *bus)
  
  {
  
      Location loc;
  
      DriveInfo *dinfo;
  
      int res = 0, unit;
  
  
  
      loc_push_none(&loc);
  
      for (unit = 0; unit < bus->info->max_target; unit++) {
  
          dinfo = drive_get(IF_SCSI, bus->busnr, unit);
  
          if (dinfo == NULL) {
  
              continue;
  
          }
  
          qemu_opts_loc_restore(dinfo->opts);
  
          if (!scsi_bus_legacy_add_drive(bus, dinfo->bdrv, unit, false, -1)) {
  
              res = -1;
  
              break;
  
          }
  
      }
  
      loc_pop(&loc);
  
      return res;
  
  }
  