ok, how does the below patch look ?

Darren

*** /sys/kern/uipc_syscalls.c.dist	Sat Jun 26 16:01:29 1999
--- /sys/kern/uipc_syscalls.c	Tue Jun 29 10:42:46 1999
***************
*** 67,72 ****
--- 67,75 ----
  #include <sys/mount.h>
  #include <sys/syscallargs.h>
  
+ #include <vm/vm.h>
+ #include <uvm/uvm_extern.h>
+ 
  /*
   * System call interface to the socket abstraction.
   */
***************
*** 171,181 ****
--- 174,192 ----
  	if (SCARG(uap, name) && (error = copyin((caddr_t)SCARG(uap, anamelen),
  	    (caddr_t)&namelen, sizeof(namelen))))
  		return (error);
+ 	if (SCARG(uap, name) != NULL &&
+ 	    uvm_useracc((caddr_t)SCARG(uap, name), sizeof(struct sockaddr),
+ 	     B_WRITE) == FALSE)
+ 		return (EFAULT);
  
  	if ((error = getsock(p->p_fd, SCARG(uap, s), &fp)) != 0)
  		return (error);
  	s = splsoftnet();
  	so = (struct socket *)fp->f_data;
+ 	if (!(so->so_proto->pr_flags & PR_LISTEN)) {
+ 		splx(s);
+ 		return (EOPNOTSUPP);
+ 	}
  	if ((so->so_options & SO_ACCEPTCONN) == 0) {
  		splx(s);
  		return (EINVAL);
***************
*** 227,232 ****
--- 238,245 ----
  			error = copyout((caddr_t)&namelen,
  			    (caddr_t)SCARG(uap, anamelen),
  			    sizeof(*SCARG(uap, anamelen)));
+ 		if (error != 0)
+ 			(void) closef(fp, p);
  	}
  	m_freem(nam);
  	splx(s);
*** /sys/sys/protosw.h.dist	Wed Jun  3 06:55:53 1998
--- /sys/sys/protosw.h	Tue Jun 29 09:59:47 1999
***************
*** 115,120 ****
--- 115,121 ----
  #define	PR_CONNREQUIRED	0x04		/* connection required by protocol */
  #define	PR_WANTRCVD	0x08		/* want PRU_RCVD calls */
  #define	PR_RIGHTS	0x10		/* passes capabilities */
+ #define	PR_LISTEN	0x20		/* supports listen(2) and accept(2) */
  
  /*
   * The arguments to usrreq are:
*** /sys/netccitt/ccitt_proto.c.dist	Thu Jan 14 12:21:52 1999
--- /sys/netccitt/ccitt_proto.c	Tue Jun 29 10:33:44 1999
***************
*** 87,93 ****
  	hd_init,	0,	 	hd_timer,	0,
  },
  #endif
! {	SOCK_STREAM,	DOMAIN,		CCITTPROTO_X25,	PR_CONNREQUIRED|PR_ATOMIC|PR_WANTRCVD,
  	pk_input,	0,		pk_ctlinput,	pk_ctloutput,
  	pk_usrreq,
  	pk_init,	0,		pk_timer,	0,
--- 87,93 ----
  	hd_init,	0,	 	hd_timer,	0,
  },
  #endif
! {	SOCK_STREAM,	DOMAIN,		CCITTPROTO_X25,	PR_CONNREQUIRED|PR_ATOMIC|PR_WANTRCVD|PR_LISTEN,
  	pk_input,	0,		pk_ctlinput,	pk_ctloutput,
  	pk_usrreq,
  	pk_init,	0,		pk_timer,	0,
*** /sys/netinet/in_proto.c.dist	Fri Apr 30 00:44:48 1999
--- /sys/netinet/in_proto.c	Tue Jun 29 10:31:14 1999
***************
*** 107,113 ****
    udp_usrreq,
    udp_init,	0,		0,		0,		udp_sysctl
  },
! { SOCK_STREAM,	&inetdomain,	IPPROTO_TCP,	PR_CONNREQUIRED|PR_WANTRCVD,
    tcp_input,	0,		tcp_ctlinput,	tcp_ctloutput,
    tcp_usrreq,
    tcp_init,	tcp_fasttimo,	tcp_slowtimo,	tcp_drain,	tcp_sysctl
--- 107,113 ----
    udp_usrreq,
    udp_init,	0,		0,		0,		udp_sysctl
  },
! { SOCK_STREAM,	&inetdomain,	IPPROTO_TCP,	PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN,
    tcp_input,	0,		tcp_ctlinput,	tcp_ctloutput,
    tcp_usrreq,
    tcp_init,	tcp_fasttimo,	tcp_slowtimo,	tcp_drain,	tcp_sysctl
***************
*** 147,153 ****
    igmp_init,	igmp_fasttimo,	igmp_slowtimo,	0,
  },
  #ifdef TPIP
! { SOCK_SEQPACKET,&inetdomain,	IPPROTO_TP,	PR_CONNREQUIRED|PR_WANTRCVD,
    tpip_input,	0,		tpip_ctlinput,	tp_ctloutput,
    tp_usrreq,
    tp_init,	0,		tp_slowtimo,	tp_drain,
--- 147,153 ----
    igmp_init,	igmp_fasttimo,	igmp_slowtimo,	0,
  },
  #ifdef TPIP
! { SOCK_SEQPACKET,&inetdomain,	IPPROTO_TP,	PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN,
    tpip_input,	0,		tpip_ctlinput,	tp_ctloutput,
    tp_usrreq,
    tp_init,	0,		tp_slowtimo,	tp_drain,
*** /sys/netiso/iso_proto.c.dist	Thu Jan 14 12:22:43 1999
--- /sys/netiso/iso_proto.c	Tue Jun 29 10:35:24 1999
***************
*** 147,153 ****
  	},
  
  	/* ISOPROTO_TP */
! 	{SOCK_SEQPACKET, &isodomain, ISOPROTO_TP, PR_CONNREQUIRED | PR_WANTRCVD,
  		tpclnp_input, 0, tpclnp_ctlinput, tp_ctloutput,
  		tp_usrreq,
  		tp_init, tp_fasttimo, tp_slowtimo, tp_drain,
--- 147,153 ----
  	},
  
  	/* ISOPROTO_TP */
! 	{SOCK_SEQPACKET, &isodomain, ISOPROTO_TP, PR_CONNREQUIRED | PR_WANTRCVD | PR_LISTEN,
  		tpclnp_input, 0, tpclnp_ctlinput, tp_ctloutput,
  		tp_usrreq,
  		tp_init, tp_fasttimo, tp_slowtimo, tp_drain,
***************
*** 155,161 ****
  
  #ifdef TPCONS
  	/* ISOPROTO_TP */
! 	{SOCK_SEQPACKET, &isodomain, ISOPROTO_TP0, PR_CONNREQUIRED | PR_WANTRCVD,
  		tpcons_input, 0, 0, tp_ctloutput,
  		tp_usrreq,
  		cons_init, 0, 0, 0,
--- 155,161 ----
  
  #ifdef TPCONS
  	/* ISOPROTO_TP */
! 	{SOCK_SEQPACKET, &isodomain, ISOPROTO_TP0, PR_CONNREQUIRED | PR_WANTRCVD | PR_LISTEN,
  		tpcons_input, 0, 0, tp_ctloutput,
  		tp_usrreq,
  		cons_init, 0, 0, 0,
*** /sys/netns/ns_proto.c.dist	Tue Jun 29 10:32:14 1999
--- /sys/netns/ns_proto.c	Tue Jun 29 10:31:59 1999
***************
*** 78,84 ****
    spp_usrreq,
    spp_init,	spp_fasttimo,	spp_slowtimo,	0,
  },
! { SOCK_SEQPACKET,&nsdomain,	NSPROTO_SPP,	PR_CONNREQUIRED|PR_WANTRCVD|PR_ATOMIC,
    spp_input,	0,		spp_ctlinput,	spp_ctloutput,
    spp_usrreq_sp,
    0,		0,		0,		0,
--- 78,84 ----
    spp_usrreq,
    spp_init,	spp_fasttimo,	spp_slowtimo,	0,
  },
! { SOCK_SEQPACKET,&nsdomain,	NSPROTO_SPP,	PR_CONNREQUIRED|PR_WANTRCVD|PR_ATOMIC|PR_LISTEN,
    spp_input,	0,		spp_ctlinput,	spp_ctloutput,
    spp_usrreq_sp,
    0,		0,		0,		0,