config_setvm
res = config_setvm(ps, vm, peer_id,
config_setvm(ps, vm, (uint32_t)-1, vm->vm_uid);
config_setvm(&env->vmd_ps, vm, -1, vm->vm_params.vmc_owner.uid);
int config_setvm(struct privsep *, struct vmd_vm *, uint32_t, uid_t);