Function sosetopt

freebsd/kern/uipc_socket.c:2988–3189

}

int
sosetopt(struct socket *so, struct sockopt *sopt)
{
	int	error, optval;
	struct	linger l;
	struct	timeval tv;
	sbintime_t val;
	uint32_t val32;
#ifdef MAC
	struct mac extmac;
#endif

	CURVNET_SET(so->so_vnet);
	error = 0;
	if (sopt->sopt_level != SOL_SOCKET) {
		if (so->so_proto->pr_ctloutput != NULL)
			error = (*so->so_proto->pr_ctloutput)(so, sopt);
		else
			error = ENOPROTOOPT;
	} else {
		switch (sopt->sopt_name) {
		case SO_ACCEPTFILTER:
			error = accept_filt_setopt(so, sopt);
			if (error)
				goto bad;
			break;

		case SO_LINGER:
			error = sooptcopyin(sopt, &l, sizeof l, sizeof l);
			if (error)
				goto bad;
			if (l.l_linger < 0 ||
			    l.l_linger > USHRT_MAX ||
			    l.l_linger > (INT_MAX / hz)) {
				error = EDOM;
				goto bad;
			}
			SOCK_LOCK(so);
			so->so_linger = l.l_linger;
			if (l.l_onoff)
				so->so_options |= SO_LINGER;
			else
				so->so_options &= ~SO_LINGER;
			SOCK_UNLOCK(so);
			break;

		case SO_DEBUG:
		case SO_KEEPALIVE:
		case SO_DONTROUTE:
		case SO_USELOOPBACK:
		case SO_BROADCAST:
		case SO_REUSEADDR:
		case SO_REUSEPORT:
		case SO_REUSEPORT_LB:
		case SO_OOBINLINE:
		case SO_TIMESTAMP:
		case SO_BINTIME:
		case SO_NOSIGPIPE: