Annotation of src/sys/netinet/raw_ip.c, Revision 1.52
1.52 ! itojun 1: /* $NetBSD: raw_ip.c,v 1.51 2000/02/17 10:59:36 darrenr Exp $ */
1.43 itojun 2:
3: /*
4: * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
5: * All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. Neither the name of the project nor the names of its contributors
16: * may be used to endorse or promote products derived from this software
17: * without specific prior written permission.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22: * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
23: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29: * SUCH DAMAGE.
30: */
1.14 cgd 31:
1.1 cgd 32: /*
1.13 mycroft 33: * Copyright (c) 1982, 1986, 1988, 1993
34: * The Regents of the University of California. All rights reserved.
1.1 cgd 35: *
36: * Redistribution and use in source and binary forms, with or without
37: * modification, are permitted provided that the following conditions
38: * are met:
39: * 1. Redistributions of source code must retain the above copyright
40: * notice, this list of conditions and the following disclaimer.
41: * 2. Redistributions in binary form must reproduce the above copyright
42: * notice, this list of conditions and the following disclaimer in the
43: * documentation and/or other materials provided with the distribution.
44: * 3. All advertising materials mentioning features or use of this software
45: * must display the following acknowledgement:
46: * This product includes software developed by the University of
47: * California, Berkeley and its contributors.
48: * 4. Neither the name of the University nor the names of its contributors
49: * may be used to endorse or promote products derived from this software
50: * without specific prior written permission.
51: *
52: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
53: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
54: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
55: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
56: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
57: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
58: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
59: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
60: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
61: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
62: * SUCH DAMAGE.
63: *
1.39 thorpej 64: * @(#)raw_ip.c 8.7 (Berkeley) 5/15/95
1.1 cgd 65: */
1.40 scottr 66:
1.45 thorpej 67: #include "opt_ipsec.h"
1.40 scottr 68: #include "opt_mrouting.h"
1.1 cgd 69:
1.7 mycroft 70: #include <sys/param.h>
71: #include <sys/malloc.h>
72: #include <sys/mbuf.h>
73: #include <sys/socket.h>
74: #include <sys/protosw.h>
75: #include <sys/socketvar.h>
76: #include <sys/errno.h>
1.13 mycroft 77: #include <sys/systm.h>
1.26 mycroft 78: #include <sys/proc.h>
1.1 cgd 79:
1.7 mycroft 80: #include <net/if.h>
81: #include <net/route.h>
1.1 cgd 82:
1.7 mycroft 83: #include <netinet/in.h>
84: #include <netinet/in_systm.h>
85: #include <netinet/ip.h>
86: #include <netinet/ip_var.h>
1.13 mycroft 87: #include <netinet/ip_mroute.h>
1.44 darrenr 88: #include <netinet/ip_icmp.h>
1.7 mycroft 89: #include <netinet/in_pcb.h>
1.24 christos 90: #include <netinet/in_var.h>
91:
92: #include <machine/stdarg.h>
1.13 mycroft 93:
1.43 itojun 94: #ifdef IPSEC
95: #include <netinet6/ipsec.h>
96: #endif /*IPSEC*/
97:
1.20 mycroft 98: struct inpcbtable rawcbtable;
1.30 pk 99:
100: int rip_bind __P((struct inpcb *, struct mbuf *));
101: int rip_connect __P((struct inpcb *, struct mbuf *));
102: void rip_disconnect __P((struct inpcb *));
1.13 mycroft 103:
104: /*
105: * Nominal space allocated to a raw ip socket.
106: */
107: #define RIPSNDQ 8192
108: #define RIPRCVQ 8192
1.1 cgd 109:
110: /*
111: * Raw interface to IP protocol.
112: */
1.13 mycroft 113:
114: /*
115: * Initialize raw connection block q.
116: */
117: void
118: rip_init()
119: {
120:
1.33 mycroft 121: in_pcbinit(&rawcbtable, 1, 1);
1.13 mycroft 122: }
123:
1.43 itojun 124: static struct sockaddr_in ripsrc = { sizeof(ripsrc), AF_INET };
125:
1.1 cgd 126: /*
127: * Setup generic address and protocol structures
128: * for raw_input routine, then pass them along with
129: * mbuf chain.
130: */
1.9 mycroft 131: void
1.24 christos 132: #if __STDC__
133: rip_input(struct mbuf *m, ...)
134: #else
135: rip_input(m, va_alist)
1.1 cgd 136: struct mbuf *m;
1.24 christos 137: va_dcl
138: #endif
1.1 cgd 139: {
1.43 itojun 140: int off, proto;
1.1 cgd 141: register struct ip *ip = mtod(m, struct ip *);
1.13 mycroft 142: register struct inpcb *inp;
1.36 thorpej 143: struct inpcb *last = 0;
144: struct mbuf *opts = 0;
1.32 mycroft 145: struct sockaddr_in ripsrc;
1.43 itojun 146: va_list ap;
147:
148: va_start(ap, m);
149: off = va_arg(ap, int);
150: proto = va_arg(ap, int);
151: va_end(ap);
1.1 cgd 152:
1.32 mycroft 153: ripsrc.sin_family = AF_INET;
154: ripsrc.sin_len = sizeof(struct sockaddr_in);
1.1 cgd 155: ripsrc.sin_addr = ip->ip_src;
1.34 mycroft 156: ripsrc.sin_port = 0;
157: bzero((caddr_t)ripsrc.sin_zero, sizeof(ripsrc.sin_zero));
1.42 thorpej 158:
159: /*
160: * XXX Compatibility: programs using raw IP expect ip_len
161: * XXX to have the header length subtracted.
162: */
163: ip->ip_len -= ip->ip_hl << 2;
1.32 mycroft 164:
1.21 cgd 165: for (inp = rawcbtable.inpt_queue.cqh_first;
166: inp != (struct inpcb *)&rawcbtable.inpt_queue;
167: inp = inp->inp_queue.cqe_next) {
1.43 itojun 168: if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
1.13 mycroft 169: continue;
1.32 mycroft 170: if (!in_nullhost(inp->inp_laddr) &&
171: !in_hosteq(inp->inp_laddr, ip->ip_dst))
1.13 mycroft 172: continue;
1.32 mycroft 173: if (!in_nullhost(inp->inp_faddr) &&
174: !in_hosteq(inp->inp_faddr, ip->ip_src))
1.13 mycroft 175: continue;
176: if (last) {
177: struct mbuf *n;
1.24 christos 178: if ((n = m_copy(m, 0, (int)M_COPYALL)) != NULL) {
1.36 thorpej 179: if (last->inp_flags & INP_CONTROLOPTS ||
180: last->inp_socket->so_options & SO_TIMESTAMP)
181: ip_savecontrol(last, &opts, ip, n);
182: if (sbappendaddr(&last->inp_socket->so_rcv,
183: sintosa(&ripsrc), n, opts) == 0) {
1.13 mycroft 184: /* should notify about lost packet */
185: m_freem(n);
1.36 thorpej 186: if (opts)
187: m_freem(opts);
188: } else
189: sorwakeup(last->inp_socket);
1.41 thorpej 190: opts = NULL;
1.13 mycroft 191: }
192: }
1.36 thorpej 193: last = inp;
1.13 mycroft 194: }
195: if (last) {
1.36 thorpej 196: if (last->inp_flags & INP_CONTROLOPTS ||
197: last->inp_socket->so_options & SO_TIMESTAMP)
198: ip_savecontrol(last, &opts, ip, m);
199: if (sbappendaddr(&last->inp_socket->so_rcv,
200: sintosa(&ripsrc), m, opts) == 0) {
1.13 mycroft 201: m_freem(m);
1.36 thorpej 202: if (opts)
203: m_freem(opts);
204: } else
205: sorwakeup(last->inp_socket);
1.13 mycroft 206: } else {
1.44 darrenr 207: if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) {
1.47 itojun 208: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL,
209: 0, 0);
1.44 darrenr 210: ipstat.ips_noproto++;
211: ipstat.ips_delivered--;
212: } else
213: m_freem(m);
1.1 cgd 214: }
1.43 itojun 215: return;
1.1 cgd 216: }
217:
218: /*
219: * Generate IP header and pass packet to ip_output.
220: * Tack on options user may have setup with control call.
221: */
1.9 mycroft 222: int
1.24 christos 223: #if __STDC__
224: rip_output(struct mbuf *m, ...)
225: #else
226: rip_output(m, va_alist)
227: struct mbuf *m;
228: va_dcl
229: #endif
230: {
1.27 mycroft 231: register struct inpcb *inp;
1.1 cgd 232: register struct ip *ip;
1.10 mycroft 233: struct mbuf *opts;
1.24 christos 234: int flags;
235: va_list ap;
236:
237: va_start(ap, m);
1.27 mycroft 238: inp = va_arg(ap, struct inpcb *);
1.24 christos 239: va_end(ap);
240:
1.27 mycroft 241: flags =
1.37 matt 242: (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST
243: | IP_RETURNMTU;
1.1 cgd 244:
245: /*
246: * If the user handed us a complete IP packet, use it.
247: * Otherwise, allocate an mbuf for a header and fill it in.
248: */
1.13 mycroft 249: if ((inp->inp_flags & INP_HDRINCL) == 0) {
1.35 thorpej 250: if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) {
251: m_freem(m);
252: return (EMSGSIZE);
253: }
1.1 cgd 254: M_PREPEND(m, sizeof(struct ip), M_WAIT);
255: ip = mtod(m, struct ip *);
256: ip->ip_tos = 0;
257: ip->ip_off = 0;
1.13 mycroft 258: ip->ip_p = inp->inp_ip.ip_p;
1.1 cgd 259: ip->ip_len = m->m_pkthdr.len;
1.13 mycroft 260: ip->ip_src = inp->inp_laddr;
1.27 mycroft 261: ip->ip_dst = inp->inp_faddr;
1.1 cgd 262: ip->ip_ttl = MAXTTL;
1.13 mycroft 263: opts = inp->inp_options;
264: } else {
1.35 thorpej 265: if (m->m_pkthdr.len > IP_MAXPACKET) {
266: m_freem(m);
267: return (EMSGSIZE);
268: }
1.13 mycroft 269: ip = mtod(m, struct ip *);
1.38 mycroft 270: if (m->m_pkthdr.len != ip->ip_len) {
271: m_freem(m);
272: return (EINVAL);
273: }
1.13 mycroft 274: if (ip->ip_id == 0)
275: ip->ip_id = htons(ip_id++);
276: opts = NULL;
277: /* XXX prevent ip_output from overwriting header fields */
278: flags |= IP_RAWOUTPUT;
279: ipstat.ips_rawout++;
1.1 cgd 280: }
1.43 itojun 281: #ifdef IPSEC
1.52 ! itojun 282: ipsec_setsocket(m, inp->inp_socket);
1.43 itojun 283: #endif /*IPSEC*/
1.37 matt 284: return (ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions, &inp->inp_errormtu));
1.1 cgd 285: }
286:
287: /*
288: * Raw IP socket option processing.
289: */
1.9 mycroft 290: int
1.1 cgd 291: rip_ctloutput(op, so, level, optname, m)
292: int op;
293: struct socket *so;
294: int level, optname;
295: struct mbuf **m;
296: {
1.13 mycroft 297: register struct inpcb *inp = sotoinpcb(so);
1.31 mycroft 298: int error = 0;
1.1 cgd 299:
1.15 mycroft 300: if (level != IPPROTO_IP) {
1.31 mycroft 301: error = ENOPROTOOPT;
302: if (op == PRCO_SETOPT && *m != 0)
303: (void) m_free(*m);
304: } else switch (op) {
305:
306: case PRCO_SETOPT:
307: switch (optname) {
308: case IP_HDRINCL:
309: if (*m == 0 || (*m)->m_len < sizeof (int))
310: error = EINVAL;
311: else {
1.13 mycroft 312: if (*mtod(*m, int *))
313: inp->inp_flags |= INP_HDRINCL;
314: else
315: inp->inp_flags &= ~INP_HDRINCL;
316: }
1.31 mycroft 317: if (*m != 0)
318: (void) m_free(*m);
319: break;
320:
321: #ifdef MROUTING
322: case MRT_INIT:
323: case MRT_DONE:
324: case MRT_ADD_VIF:
325: case MRT_DEL_VIF:
326: case MRT_ADD_MFC:
327: case MRT_DEL_MFC:
328: case MRT_ASSERT:
329: error = ip_mrouter_set(so, optname, m);
330: break;
331: #endif
332:
333: default:
334: error = ip_ctloutput(op, so, level, optname, m);
335: break;
1.13 mycroft 336: }
337: break;
1.1 cgd 338:
1.31 mycroft 339: case PRCO_GETOPT:
340: switch (optname) {
341: case IP_HDRINCL:
342: *m = m_get(M_WAIT, M_SOOPTS);
343: (*m)->m_len = sizeof (int);
344: *mtod(*m, int *) = inp->inp_flags & INP_HDRINCL ? 1 : 0;
345: break;
346:
1.6 hpeyerl 347: #ifdef MROUTING
1.31 mycroft 348: case MRT_VERSION:
349: case MRT_ASSERT:
350: error = ip_mrouter_get(so, optname, m);
1.18 mycroft 351: break;
1.31 mycroft 352: #endif
353:
1.18 mycroft 354: default:
1.31 mycroft 355: error = ip_ctloutput(op, so, level, optname, m);
1.18 mycroft 356: break;
357: }
1.31 mycroft 358: break;
1.1 cgd 359: }
1.31 mycroft 360: return (error);
1.1 cgd 361: }
362:
1.27 mycroft 363: int
1.29 mycroft 364: rip_bind(inp, nam)
365: struct inpcb *inp;
366: struct mbuf *nam;
367: {
368: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
369:
370: if (nam->m_len != sizeof(*addr))
371: return (EINVAL);
372: if (ifnet.tqh_first == 0)
373: return (EADDRNOTAVAIL);
374: if (addr->sin_family != AF_INET &&
375: addr->sin_family != AF_IMPLINK)
376: return (EAFNOSUPPORT);
1.32 mycroft 377: if (!in_nullhost(addr->sin_addr) &&
1.29 mycroft 378: ifa_ifwithaddr(sintosa(addr)) == 0)
379: return (EADDRNOTAVAIL);
380: inp->inp_laddr = addr->sin_addr;
381: return (0);
382: }
383:
384: int
1.27 mycroft 385: rip_connect(inp, nam)
386: struct inpcb *inp;
387: struct mbuf *nam;
388: {
389: struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
390:
391: if (nam->m_len != sizeof(*addr))
392: return (EINVAL);
393: if (ifnet.tqh_first == 0)
394: return (EADDRNOTAVAIL);
395: if (addr->sin_family != AF_INET &&
396: addr->sin_family != AF_IMPLINK)
397: return (EAFNOSUPPORT);
398: inp->inp_faddr = addr->sin_addr;
399: return (0);
400: }
401:
402: void
403: rip_disconnect(inp)
404: struct inpcb *inp;
405: {
406:
1.32 mycroft 407: inp->inp_faddr = zeroin_addr;
1.27 mycroft 408: }
409:
1.13 mycroft 410: u_long rip_sendspace = RIPSNDQ;
411: u_long rip_recvspace = RIPRCVQ;
412:
1.1 cgd 413: /*ARGSUSED*/
1.9 mycroft 414: int
1.26 mycroft 415: rip_usrreq(so, req, m, nam, control, p)
1.1 cgd 416: register struct socket *so;
417: int req;
1.2 cgd 418: struct mbuf *m, *nam, *control;
1.26 mycroft 419: struct proc *p;
1.1 cgd 420: {
1.27 mycroft 421: register struct inpcb *inp;
422: int s;
1.1 cgd 423: register int error = 0;
1.13 mycroft 424: #ifdef MROUTING
1.6 hpeyerl 425: extern struct socket *ip_mrouter;
426: #endif
1.27 mycroft 427:
1.22 pk 428: if (req == PRU_CONTROL)
429: return (in_control(so, (long)m, (caddr_t)nam,
1.26 mycroft 430: (struct ifnet *)control, p));
1.49 thorpej 431:
1.50 thorpej 432: if (req == PRU_PURGEIF) {
433: in_purgeif((struct ifnet *)control);
434: in_pcbpurgeif(&rawcbtable, (struct ifnet *)control);
1.49 thorpej 435: return (0);
436: }
1.22 pk 437:
1.27 mycroft 438: s = splsoftnet();
439: inp = sotoinpcb(so);
1.28 mycroft 440: #ifdef DIAGNOSTIC
441: if (req != PRU_SEND && req != PRU_SENDOOB && control)
442: panic("rip_usrreq: unexpected control mbuf");
443: #endif
1.27 mycroft 444: if (inp == 0 && req != PRU_ATTACH) {
1.22 pk 445: error = EINVAL;
446: goto release;
447: }
448:
1.1 cgd 449: switch (req) {
450:
451: case PRU_ATTACH:
1.27 mycroft 452: if (inp != 0) {
453: error = EISCONN;
454: break;
455: }
1.26 mycroft 456: if (p == 0 || (error = suser(p->p_ucred, &p->p_acflag))) {
1.13 mycroft 457: error = EACCES;
458: break;
459: }
1.27 mycroft 460: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
461: error = soreserve(so, rip_sendspace, rip_recvspace);
462: if (error)
463: break;
464: }
465: error = in_pcballoc(so, &rawcbtable);
466: if (error)
1.13 mycroft 467: break;
1.27 mycroft 468: inp = sotoinpcb(so);
1.17 cgd 469: inp->inp_ip.ip_p = (long)nam;
1.43 itojun 470: #ifdef IPSEC
1.48 itojun 471: error = ipsec_init_policy(so, &inp->inp_sp);
1.47 itojun 472: if (error != 0) {
1.46 itojun 473: in_pcbdetach(inp);
1.47 itojun 474: break;
475: }
1.43 itojun 476: #endif /*IPSEC*/
1.1 cgd 477: break;
478:
479: case PRU_DETACH:
1.13 mycroft 480: #ifdef MROUTING
1.6 hpeyerl 481: if (so == ip_mrouter)
482: ip_mrouter_done();
483: #endif
1.13 mycroft 484: in_pcbdetach(inp);
1.1 cgd 485: break;
486:
487: case PRU_BIND:
1.29 mycroft 488: error = rip_bind(inp, nam);
1.27 mycroft 489: break;
490:
491: case PRU_LISTEN:
492: error = EOPNOTSUPP;
493: break;
494:
495: case PRU_CONNECT:
496: error = rip_connect(inp, nam);
497: if (error)
1.13 mycroft 498: break;
1.1 cgd 499: soisconnected(so);
1.13 mycroft 500: break;
501:
502: case PRU_CONNECT2:
503: error = EOPNOTSUPP;
504: break;
505:
1.27 mycroft 506: case PRU_DISCONNECT:
507: soisdisconnected(so);
508: rip_disconnect(inp);
509: break;
510:
1.13 mycroft 511: /*
512: * Mark the connection as being incapable of further input.
513: */
514: case PRU_SHUTDOWN:
515: socantsendmore(so);
516: break;
517:
1.27 mycroft 518: case PRU_RCVD:
519: error = EOPNOTSUPP;
520: break;
521:
1.13 mycroft 522: /*
523: * Ship a packet out. The appropriate raw output
524: * routine handles any massaging necessary.
525: */
526: case PRU_SEND:
1.28 mycroft 527: if (control && control->m_len) {
528: m_freem(control);
529: m_freem(m);
530: error = EINVAL;
531: break;
532: }
533: {
1.27 mycroft 534: if (nam) {
535: if ((so->so_state & SS_ISCONNECTED) != 0) {
1.13 mycroft 536: error = EISCONN;
1.28 mycroft 537: goto die;
1.13 mycroft 538: }
1.27 mycroft 539: error = rip_connect(inp, nam);
540: if (error) {
1.28 mycroft 541: die:
1.27 mycroft 542: m_freem(m);
543: break;
544: }
1.13 mycroft 545: } else {
1.27 mycroft 546: if ((so->so_state & SS_ISCONNECTED) == 0) {
1.13 mycroft 547: error = ENOTCONN;
1.28 mycroft 548: goto die;
1.13 mycroft 549: }
550: }
1.27 mycroft 551: error = rip_output(m, inp);
552: if (nam)
553: rip_disconnect(inp);
1.28 mycroft 554: }
1.13 mycroft 555: break;
556:
557: case PRU_SENSE:
558: /*
559: * stat: don't bother with a blocksize.
560: */
1.27 mycroft 561: splx(s);
1.1 cgd 562: return (0);
1.13 mycroft 563:
564: case PRU_RCVOOB:
1.27 mycroft 565: error = EOPNOTSUPP;
566: break;
567:
1.13 mycroft 568: case PRU_SENDOOB:
1.28 mycroft 569: m_freem(control);
1.27 mycroft 570: m_freem(m);
1.13 mycroft 571: error = EOPNOTSUPP;
572: break;
573:
574: case PRU_SOCKADDR:
575: in_setsockaddr(inp, nam);
576: break;
577:
578: case PRU_PEERADDR:
579: in_setpeeraddr(inp, nam);
580: break;
581:
582: default:
583: panic("rip_usrreq");
1.1 cgd 584: }
1.27 mycroft 585:
1.22 pk 586: release:
1.27 mycroft 587: splx(s);
1.1 cgd 588: return (error);
589: }
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