static void qvirtio_scsi_start(const char *extra_opts) { char *cmdline; cmdline = g_strdup_printf( "-drive id=drv0,if=none,file=/dev/null,format=raw " "-device virtio-scsi-pci,id=vs0 " "-device scsi-hd,bus=vs0.0,drive=drv0 %s", extra_opts ? : ""); qtest_start(cmdline); g_free(cmdline); }