[unix-history] / usr / src / sys / netns / idp_usrreq.c

/*      idp_usrreq.c     6.2     85/05/31     */

#include "param.h"
#include "dir.h"
#include "user.h"
#include "mbuf.h"
#include "protosw.h"
#include "socket.h"
#include "socketvar.h"
#include "errno.h"
#include "stat.h"

#include "../net/if.h"
#include "../net/route.h"

#include "ns.h"
#include "ns_pcb.h"
#include "idp.h"
#include "idp_var.h"
#include "ns_error.h"

/*
 * IDP protocol implementation.
 */

struct	sockaddr_ns idp_ns = { AF_NS };

idp_input(m, nsp)
	struct mbuf *m;
	register struct nspcb *nsp;
{
	register struct idp *idp = mtod(m, struct idp *);
	if (nsp==0)
		panic("Impossible idp_input");

	/*
	 * Construct sockaddr format source address.
	 * Stuff source address and datagram in user buffer.
	 */
	idp_ns.sns_addr = idp->idp_sna;
	nsp->nsp_rpt = idp->idp_pt;
	if ( ! (nsp->nsp_flags & NSP_RAWIN) ) {
		m->m_len -= sizeof (struct idp);
		m->m_off += sizeof (struct idp);
	}
	if (sbappendaddr(&nsp->nsp_socket->so_rcv, (struct sockaddr *)&idp_ns,
	    m, (struct mbuf *)0) == 0)
		goto bad;
	sorwakeup(nsp->nsp_socket);
	return;
bad:
	m_freem(m);
}

idp_abort(nsp)
	struct nspcb *nsp;
{
	struct socket *so = nsp->nsp_socket;

	ns_pcbdisconnect(nsp);
	soisdisconnected(so);
}

idp_output(nsp, m0)
	struct nspcb *nsp;
	struct mbuf *m0;
{
	register struct mbuf *m;
	register struct idp *idp;
	register struct socket *so;
	register int len = 0;
	register struct route *ro;
	struct mbuf *mprev;
	extern int idpcksum;

	/*
	 * Calculate data length.
	 */
	for (m = m0; m; m = m->m_next) {
		mprev = m;
		len += m->m_len;
	}
	/*
	 * Make sure packet is actually of even length.
	 */
	
	if (len & 1) {
		m = mprev;
		if (m->m_len + m->m_off < MMAXOFF) {
			m->m_len++;
		} else {
			struct mbuf *m1 = m_get(M_DONTWAIT, MT_DATA);

			if (m1 == 0) {
				m_freem(m0);
				return (ENOBUFS);
			}
			m1->m_len = 1;
			m1->m_off = MMAXOFF - 1;
			* mtod(m1, char *) = 0;
			m->m_next = m1;
		}
	}

	/*
	 * Fill in mbuf with extended IDP header
	 * and addresses and length put into network format.
	 */
	if (nsp->nsp_flags & NSP_RAWOUT) {
		m = m0;
		idp = mtod(m, struct idp *);
	} else {
		m = m_get(M_DONTWAIT, MT_HEADER);
		if (m == 0) {
			m_freem(m0);
			return (ENOBUFS);
		}
		m->m_off = MMAXOFF - sizeof (struct idp);
		m->m_len = sizeof (struct idp);
		m->m_next = m0;
		idp = mtod(m, struct idp *);
		idp->idp_tc = 0;
		idp->idp_pt = nsp->nsp_dpt;
		idp->idp_sna = nsp->nsp_laddr;
		idp->idp_dna = nsp->nsp_faddr;
		len += sizeof (struct idp);
	}

	idp->idp_len = htons((u_short)len);

	if (idpcksum) {
		idp->idp_sum = 0;
		len = ((len - 1) | 1) + 1;
		idp->idp_sum = ns_cksum(m, len);
	} else
		idp->idp_sum = 0xffff;

	/*
	 * Output datagram.
	 */
	so = nsp->nsp_socket;
	if (so->so_options & SO_DONTROUTE)
		return (ns_output(m, (struct route *)0,
		    (so->so_options & SO_BROADCAST) | NS_ROUTETOIF));
	/*
	 * Use cached route for previous datagram if
	 * this is also to the same destination. 
	 *
	 * NB: We don't handle broadcasts because that
	 *     would require 3 subroutine calls.
	 */
	ro = &nsp->nsp_route;
	if (ro->ro_rt &&
		((*(long *)&nsp->nsp_lastnet)!=ns_netof(idp->idp_dna)) &&
		!(ns_hosteq(satons_addr(ro->ro_dst), idp->idp_dna))) {
		RTFREE(ro->ro_rt);
		ro->ro_rt = (struct rtentry *)0;
		nsp->nsp_lastnet = idp->idp_dna.x_net;
	}
	return (ns_output(m, ro, so->so_options & SO_BROADCAST));
}
/*ARGSUSED*/
idp_ctloutput(req, so, level, name, value)
	int req, level;
	struct socket *so;
	int name;
	struct mbuf **value;
{
	register struct mbuf *m;
	struct nspcb *nsp = sotonspcb(so);
	int mask, error = 0;

	if (nsp == NULL) {
		error = EINVAL;
		goto release;
	}

	switch (req) {
	case PRCO_GETOPT:
		if (value==NULL) {
			error = EINVAL;
			goto release;
		}
		m = m_get(M_DONTWAIT, MT_DATA);
		switch (name) {
		case SO_HEADERS_ON_INPUT:
			mask = NSP_RAWIN;
			goto get_flags;
		case SO_HEADERS_ON_OUTPUT:
			mask = NSP_RAWOUT;
		get_flags:
			m->m_len = sizeof(short);
			m->m_off = MMAXOFF - sizeof(short);
			*mtod(m, short *) = nsp->nsp_flags & mask;
			break;
		case SO_DEFAULT_HEADERS:
			m->m_len = sizeof(struct idp);
			m->m_off = MMAXOFF - sizeof(struct idp);
			{
				register struct idp *idp = mtod(m, struct idp *);
				idp->idp_len = 0;
				idp->idp_sum = 0;
				idp->idp_tc = 0;
				idp->idp_pt = nsp->nsp_dpt;
				idp->idp_dna = nsp->nsp_faddr;
				idp->idp_sna = nsp->nsp_laddr;
			}
		}
		*value = m;
		break;
	case PRCO_SETOPT:
		switch (name) {
			int mask, *ok;

		case SO_HEADERS_ON_INPUT:
			mask = NSP_RAWIN;
			goto set_head;
		case SO_HEADERS_ON_OUTPUT:
			mask = NSP_RAWOUT;
		set_head:
			if (value && *value) {
				ok = mtod(*value, int *);
				if (*ok)
					nsp->nsp_flags |= mask;
				else
					nsp->nsp_flags &= ~mask;
			} else error = EINVAL;
			break;
		case SO_DEFAULT_HEADERS:
			{
				register struct idp *idp
				    = mtod(*value, struct idp *);
				nsp->nsp_dpt = idp->idp_pt;
			}
#ifdef NSIP
			break;
		case SO_NSIP_ROUTE:
			error = nsip_route(*value);
			break;
#endif NSIP
		}
		if (value && *value)
			m_freem(*value);
		break;
	}
	release:
		return(error);
}

/*ARGSUSED*/
idp_usrreq(so, req, m, nam, rights)
	struct socket *so;
	int req;
	struct mbuf *m, *nam, *rights;
{
	struct nspcb *nsp = sotonspcb(so);
	int error = 0;

	if (req == PRU_CONTROL)
                return (ns_control(so, (int)m, (caddr_t)nam,
			(struct ifnet *)rights));
	if (rights && rights->m_len) {
		error = EINVAL;
		goto release;
	}
	if (nsp == NULL && req != PRU_ATTACH) {
		error = EINVAL;
		goto release;
	}
	switch (req) {

	case PRU_ATTACH:
		if (nsp != NULL) {
			error = EINVAL;
			break;
		}
		error = ns_pcballoc(so, &nspcb);
		if (error)
			break;
		error = soreserve(so, 2048, 2048);
		if (error)
			break;
		break;

	case PRU_DETACH:
		if (nsp == NULL) {
			error = ENOTCONN;
			break;
		}
		ns_pcbdetach(nsp);
		break;

	case PRU_BIND:
		error = ns_pcbbind(nsp, nam);
		break;

	case PRU_LISTEN:
		error = EOPNOTSUPP;
		break;

	case PRU_CONNECT:
		if (!ns_nullhost(nsp->nsp_faddr)) {
			error = EISCONN;
			break;
		}
		error = ns_pcbconnect(nsp, nam);
		if (error == 0)
			soisconnected(so);
		break;

	case PRU_CONNECT2:
		error = EOPNOTSUPP;
		break;

	case PRU_ACCEPT:
		error = EOPNOTSUPP;
		break;

	case PRU_DISCONNECT:
		if (ns_nullhost(nsp->nsp_faddr)) {
			error = ENOTCONN;
			break;
		}
		ns_pcbdisconnect(nsp);
		soisdisconnected(so);
		break;

	case PRU_SHUTDOWN:
		socantsendmore(so);
		break;

	case PRU_SEND:
	{
		struct ns_addr laddr;
		int s;

		if (nam) {
			laddr = nsp->nsp_laddr;
			if (!ns_nullhost(nsp->nsp_faddr)) {
				error = EISCONN;
				break;
			}
			/*
			 * Must block input while temporarily connected.
			 */
			s = splnet();
			error = ns_pcbconnect(nsp, nam);
			if (error) {
				splx(s);
				break;
			}
		} else {
			if (ns_nullhost(nsp->nsp_faddr)) {
				error = ENOTCONN;
				break;
			}
		}
		error = idp_output(nsp, m);
		m = NULL;
		if (nam) {
			ns_pcbdisconnect(nsp);
			splx(s);
			nsp->nsp_laddr.x_host = laddr.x_host;
			nsp->nsp_laddr.x_port = laddr.x_port;
		}
	}
		break;

	case PRU_ABORT:
		ns_pcbdetach(nsp);
		sofree(so);
		soisdisconnected(so);
		break;

	case PRU_SOCKADDR:
		ns_setsockaddr(nsp, nam);
		break;

	case PRU_PEERADDR:
		ns_setpeeraddr(nsp, nam);
		break;

	case PRU_SENSE:
		/*
		 * stat: don't bother with a blocksize.
		 */
		return (0);

	case PRU_SENDOOB:
	case PRU_FASTTIMO:
	case PRU_SLOWTIMO:
	case PRU_PROTORCV:
	case PRU_PROTOSEND:
		error =  EOPNOTSUPP;
		break;

	case PRU_CONTROL:
	case PRU_RCVD:
	case PRU_RCVOOB:
		return (EOPNOTSUPP);	/* do not free mbuf's */

	default:
		panic("idp_usrreq");
	}
release:
	if (m != NULL)
		m_freem(m);
	return (error);
}
/*ARGSUSED*/
idp_raw_usrreq(so, req, m, nam, rights)
	struct socket *so;
	int req;
	struct mbuf *m, *nam, *rights;
{
	int error = 0;
	struct nspcb *nsp = sotonspcb(so);
	extern struct nspcb nsrawpcb;

	switch (req) {

	case PRU_ATTACH:

		if (!suser() || (nsp != NULL)) {
			error = EINVAL;
			break;
		}
		error = ns_pcballoc(so, &nsrawpcb);
		if (error)
			break;
		error = soreserve(so, 2048, 2048);
		if (error)
			break;
		nsp = sotonspcb(so);
		nsp->nsp_faddr.x_host = ns_broadhost;
		nsp->nsp_flags = NSP_RAWIN | NSP_RAWOUT;
		break;
	default:
		error = idp_usrreq(so, req, m, nam, rights);
	}
	return(error);
}
Commit	Line	Data
14bdc762	1	/* idp_usrreq.c 6.2 85/05/31 */
b1fca4bf KS	2
	3	#include "param.h"
	4	#include "dir.h"
	5	#include "user.h"
	6	#include "mbuf.h"
	7	#include "protosw.h"
	8	#include "socket.h"
	9	#include "socketvar.h"
	10	#include "errno.h"
	11	#include "stat.h"
	12
	13	#include "../net/if.h"
	14	#include "../net/route.h"
	15
	16	#include "ns.h"
	17	#include "ns_pcb.h"
	18	#include "idp.h"
	19	#include "idp_var.h"
	20	#include "ns_error.h"
	21
	22	/*
	23	* IDP protocol implementation.
	24	*/
	25
	26	struct sockaddr_ns idp_ns = { AF_NS };
	27
b1fca4bf KS	28	idp_input(m, nsp)
	29	struct mbuf *m;
	30	register struct nspcb *nsp;
	31	{
	32	register struct idp idp = mtod(m, struct idp );
14bdc762 KS	33	if (nsp==0)
14bdc762 KS	34	panic("Impossible idp_input");
b1fca4bf KS	35
	36	/*
	37	* Construct sockaddr format source address.
	38	* Stuff source address and datagram in user buffer.
	39	*/
	40	idp_ns.sns_addr = idp->idp_sna;
	41	nsp->nsp_rpt = idp->idp_pt;
	42	if ( ! (nsp->nsp_flags & NSP_RAWIN) ) {
	43	m->m_len -= sizeof (struct idp);
	44	m->m_off += sizeof (struct idp);
	45	}
	46	if (sbappendaddr(&nsp->nsp_socket->so_rcv, (struct sockaddr *)&idp_ns,
	47	m, (struct mbuf *)0) == 0)
	48	goto bad;
	49	sorwakeup(nsp->nsp_socket);
	50	return;
	51	bad:
	52	m_freem(m);
	53	}
	54
	55	idp_abort(nsp)
	56	struct nspcb *nsp;
	57	{
	58	struct socket *so = nsp->nsp_socket;
	59
	60	ns_pcbdisconnect(nsp);
	61	soisdisconnected(so);
	62	}
	63
	64	idp_output(nsp, m0)
	65	struct nspcb *nsp;
	66	struct mbuf *m0;
	67	{
	68	register struct mbuf *m;
	69	register struct idp *idp;
	70	register struct socket *so;
	71	register int len = 0;
	72	register struct route *ro;
	73	struct mbuf *mprev;
	74	extern int idpcksum;
	75
	76	/*
	77	* Calculate data length.
	78	*/
	79	for (m = m0; m; m = m->m_next) {
	80	mprev = m;
	81	len += m->m_len;
	82	}
	83	/*
	84	* Make sure packet is actually of even length.
	85	*/
	86
	87	if (len & 1) {
	88	m = mprev;
	89	if (m->m_len + m->m_off < MMAXOFF) {
	90	m->m_len++;
	91	} else {
	92	struct mbuf *m1 = m_get(M_DONTWAIT, MT_DATA);
	93
14bdc762 KS	94	if (m1 == 0) {
	95	m_freem(m0);
	96	return (ENOBUFS);
	97	}
b1fca4bf KS	98	m1->m_len = 1;
	99	m1->m_off = MMAXOFF - 1;
	100	* mtod(m1, char *) = 0;
	101	m->m_next = m1;
	102	}
	103	}
	104
	105	/*
	106	* Fill in mbuf with extended IDP header
	107	* and addresses and length put into network format.
	108	*/
	109	if (nsp->nsp_flags & NSP_RAWOUT) {
	110	m = m0;
	111	idp = mtod(m, struct idp *);
	112	} else {
	113	m = m_get(M_DONTWAIT, MT_HEADER);
	114	if (m == 0) {
	115	m_freem(m0);
	116	return (ENOBUFS);
	117	}
	118	m->m_off = MMAXOFF - sizeof (struct idp);
	119	m->m_len = sizeof (struct idp);
	120	m->m_next = m0;
	121	idp = mtod(m, struct idp *);
	122	idp->idp_tc = 0;
	123	idp->idp_pt = nsp->nsp_dpt;
	124	idp->idp_sna = nsp->nsp_laddr;
	125	idp->idp_dna = nsp->nsp_faddr;
	126	len += sizeof (struct idp);
	127	}
	128
	129	idp->idp_len = htons((u_short)len);
	130
	131	if (idpcksum) {
	132	idp->idp_sum = 0;
	133	len = ((len - 1) \| 1) + 1;
	134	idp->idp_sum = ns_cksum(m, len);
	135	} else
	136	idp->idp_sum = 0xffff;
	137
	138	/*
	139	* Output datagram.
	140	*/
	141	so = nsp->nsp_socket;
	142	if (so->so_options & SO_DONTROUTE)
	143	return (ns_output(m, (struct route *)0,
	144	(so->so_options & SO_BROADCAST) \| NS_ROUTETOIF));
	145	/*
	146	* Use cached route for previous datagram if
	147	* this is also to the same destination.
	148	*
	149	* NB: We don't handle broadcasts because that
	150	* would require 3 subroutine calls.
	151	*/
	152	ro = &nsp->nsp_route;
	153	if (ro->ro_rt &&
	154	(((long )&nsp->nsp_lastnet)!=ns_netof(idp->idp_dna)) &&
	155	!(ns_hosteq(satons_addr(ro->ro_dst), idp->idp_dna))) {
	156	RTFREE(ro->ro_rt);
	157	ro->ro_rt = (struct rtentry *)0;
	158	nsp->nsp_lastnet = idp->idp_dna.x_net;
	159	}
	160	return (ns_output(m, ro, so->so_options & SO_BROADCAST));
	161	}
162	/ARGSUSED/
163	idp_ctloutput(req, so, level, name, value)
164	int req, level;
165	struct socket *so;
166	int name;
167	struct mbuf **value;
168	{
169	register struct mbuf *m;
170	struct nspcb *nsp = sotonspcb(so);
171	int mask, error = 0;
172
173	if (nsp == NULL) {
174	error = EINVAL;
175	goto release;
176	}
177
178	switch (req) {
179	case PRCO_GETOPT:
180	if (value==NULL) {
181	error = EINVAL;
182	goto release;
183	}
184	m = m_get(M_DONTWAIT, MT_DATA);
185	switch (name) {
186	case SO_HEADERS_ON_INPUT:
187	mask = NSP_RAWIN;
188	goto get_flags;
189	case SO_HEADERS_ON_OUTPUT:
190	mask = NSP_RAWOUT;
191	get_flags:
192	m->m_len = sizeof(short);
193	m->m_off = MMAXOFF - sizeof(short);
194	mtod(m, short ) = nsp->nsp_flags & mask;
195	break;
196	case SO_DEFAULT_HEADERS:
197	m->m_len = sizeof(struct idp);
198	m->m_off = MMAXOFF - sizeof(struct idp);
199	{
200	register struct idp idp = mtod(m, struct idp );
201	idp->idp_len = 0;
202	idp->idp_sum = 0;
203	idp->idp_tc = 0;
204	idp->idp_pt = nsp->nsp_dpt;
205	idp->idp_dna = nsp->nsp_faddr;
206	idp->idp_sna = nsp->nsp_laddr;
207	}
208	}
209	*value = m;
210	break;
211	case PRCO_SETOPT:
212	switch (name) {
213	int mask, *ok;
214
215	case SO_HEADERS_ON_INPUT:
216	mask = NSP_RAWIN;
217	goto set_head;
218	case SO_HEADERS_ON_OUTPUT:
219	mask = NSP_RAWOUT;
220	set_head:
221	if (value && *value) {
222	ok = mtod(value, int );
223	if (*ok)
224	nsp->nsp_flags \|= mask;
225	else
226	nsp->nsp_flags &= ~mask;
227	} else error = EINVAL;
228	break;
229	case SO_DEFAULT_HEADERS:
230	{
231	register struct idp *idp
232	= mtod(value, struct idp );
233	nsp->nsp_dpt = idp->idp_pt;
234	}
235	#ifdef NSIP
236	break;
237	case SO_NSIP_ROUTE:
238	error = nsip_route(*value);
239	break;
240	#endif NSIP
241	}
242	if (value && *value)
243	m_freem(*value);
244	break;
245	}
246	release:
247	return(error);
248	}
249
250	/ARGSUSED/
251	idp_usrreq(so, req, m, nam, rights)
252	struct socket *so;
253	int req;
254	struct mbuf m, nam, *rights;
255	{
256	struct nspcb *nsp = sotonspcb(so);
257	int error = 0;
258
259	if (req == PRU_CONTROL)
260	return (ns_control(so, (int)m, (caddr_t)nam,
261	(struct ifnet *)rights));
262	if (rights && rights->m_len) {
263	error = EINVAL;
264	goto release;
265	}
266	if (nsp == NULL && req != PRU_ATTACH) {
267	error = EINVAL;
268	goto release;
269	}
270	switch (req) {
271
272	case PRU_ATTACH:
273	if (nsp != NULL) {
274	error = EINVAL;
275	break;
276	}
277	error = ns_pcballoc(so, &nspcb);
278	if (error)
279	break;
280	error = soreserve(so, 2048, 2048);
281	if (error)
282	break;
283	break;
284
285	case PRU_DETACH:
286	if (nsp == NULL) {
287	error = ENOTCONN;
288	break;
289	}
290	ns_pcbdetach(nsp);
291	break;
292
293	case PRU_BIND:
294	error = ns_pcbbind(nsp, nam);
295	break;
296
297	case PRU_LISTEN:
298	error = EOPNOTSUPP;
299	break;
300
301	case PRU_CONNECT:
302	if (!ns_nullhost(nsp->nsp_faddr)) {
303	error = EISCONN;
304	break;
305	}
306	error = ns_pcbconnect(nsp, nam);
307	if (error == 0)
308	soisconnected(so);
309	break;
310
311	case PRU_CONNECT2:
312	error = EOPNOTSUPP;
313	break;
314
315	case PRU_ACCEPT:
316	error = EOPNOTSUPP;
317	break;
318
319	case PRU_DISCONNECT:
320	if (ns_nullhost(nsp->nsp_faddr)) {
321	error = ENOTCONN;
322	break;
323	}
324	ns_pcbdisconnect(nsp);
325	soisdisconnected(so);
326	break;
327
328	case PRU_SHUTDOWN:
329	socantsendmore(so);
330	break;
331
332	case PRU_SEND:
333	{
334	struct ns_addr laddr;
335	int s;
336
337	if (nam) {
338	laddr = nsp->nsp_laddr;
339	if (!ns_nullhost(nsp->nsp_faddr)) {
340	error = EISCONN;
341	break;
342	}
343	/*
344	* Must block input while temporarily connected.
345	*/
346	s = splnet();
347	error = ns_pcbconnect(nsp, nam);
348	if (error) {
349	splx(s);
350	break;
351	}
352	} else {
353	if (ns_nullhost(nsp->nsp_faddr)) {
354	error = ENOTCONN;
355	break;
356	}
357	}
358	error = idp_output(nsp, m);
359	m = NULL;
360	if (nam) {
361	ns_pcbdisconnect(nsp);
362	splx(s);
363	nsp->nsp_laddr.x_host = laddr.x_host;
364	nsp->nsp_laddr.x_port = laddr.x_port;
365	}
366	}
367	break;
368
369	case PRU_ABORT:
370	ns_pcbdetach(nsp);
371	sofree(so);
372	soisdisconnected(so);
373	break;
374
375	case PRU_SOCKADDR:
376	ns_setsockaddr(nsp, nam);
377	break;
378
379	case PRU_PEERADDR:
380	ns_setpeeraddr(nsp, nam);
381	break;
382
383	case PRU_SENSE:
384	/*
385	* stat: don't bother with a blocksize.
386	*/
387	return (0);
388
389	case PRU_SENDOOB:
390	case PRU_FASTTIMO:
391	case PRU_SLOWTIMO:
392	case PRU_PROTORCV:
393	case PRU_PROTOSEND:
394	error = EOPNOTSUPP;
395	break;
396
397	case PRU_CONTROL:
398	case PRU_RCVD:
399	case PRU_RCVOOB:
400	return (EOPNOTSUPP); /* do not free mbuf's */
401
402	default:
403	panic("idp_usrreq");
404	}
405	release:
406	if (m != NULL)
407	m_freem(m);
408	return (error);
409	}
410	/ARGSUSED/
411	idp_raw_usrreq(so, req, m, nam, rights)
412	struct socket *so;
413	int req;
414	struct mbuf m, nam, *rights;
415	{
416	int error = 0;
417	struct nspcb *nsp = sotonspcb(so);
418	extern struct nspcb nsrawpcb;
419
420	switch (req) {
421
422	case PRU_ATTACH:
423
14bdc762	424	if (!suser() \|\| (nsp != NULL)) {
b1fca4bf KS	425	error = EINVAL;
	426	break;
	427	}
	428	error = ns_pcballoc(so, &nsrawpcb);
	429	if (error)
	430	break;
	431	error = soreserve(so, 2048, 2048);
	432	if (error)
	433	break;
	434	nsp = sotonspcb(so);
	435	nsp->nsp_faddr.x_host = ns_broadhost;
	436	nsp->nsp_flags = NSP_RAWIN \| NSP_RAWOUT;
	437	break;
	438	default:
	439	error = idp_usrreq(so, req, m, nam, rights);
	440	}
	441	return(error);
	442	}
	443