static void nl_start(int fd)
static int nl_start(int fd)
static void nl_start(int fd){	int err;	struct tgt_event *ev;	struct nlmsghdr *nlh;	char rbuf[8192];	char nlmsg[NLMSG_SPACE(sizeof(struct tgt_event))];	err = nl_cmd_call(fd, TGT_UEVENT_START, nlmsg,			  NLMSG_SPACE(sizeof(struct tgt_event)), rbuf);	nlh = (struct nlmsghdr *) rbuf;	ev = (struct tgt_event *) NLMSG_DATA(nlh);	if (err < 0 || ev->k.event_res.err < 0) {		eprintf("%d %d\n", err, ev->k.event_res.err);		exit(-1);	}}