2 * Copyright (c) 1985, 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
37 * Permission to use, copy, modify, and distribute this software for any
38 * purpose with or without fee is hereby granted, provided that the above
39 * copyright notice and this permission notice appear in all copies, and that
40 * the name of Digital Equipment Corporation not be used in advertising or
41 * publicity pertaining to distribution of the document or software without
42 * specific, written prior permission.
44 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
45 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
46 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
47 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
48 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
49 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
50 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
55 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
56 * Portions Copyright (c) 1996-1999 by Internet Software Consortium.
58 * Permission to use, copy, modify, and distribute this software for any
59 * purpose with or without fee is hereby granted, provided that the above
60 * copyright notice and this permission notice appear in all copies.
62 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
63 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
64 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
65 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
66 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
67 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
68 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
71 #if defined(LIBC_SCCS) && !defined(lint)
72 static const char sccsid[] = "@(#)res_init.c 8.1 (Berkeley) 6/7/93";
73 static const char rcsid[] = "$Id: res_init.c,v 1.23 2007/07/09 01:43:23 marka Exp $";
74 #endif /* LIBC_SCCS and not lint */
76 #include "port_before.h"
79 #include "namespace.h"
81 #include <sys/types.h>
82 #include <sys/param.h>
83 #include <sys/socket.h>
86 #include <netinet/in.h>
87 #include <arpa/inet.h>
88 #include <arpa/nameser.h>
97 #include "un-namespace.h"
100 #include "port_after.h"
102 /* ensure that sockaddr_in6 and IN6ADDR_ANY_INIT are declared / defined */
105 #include "res_private.h"
107 /*% Options. Should all be left alone. */
112 #include <sys/systeminfo.h>
115 static void res_setoptions __P((res_state, const char *, const char *));
118 static const char sort_mask[] = "/&";
119 #define ISSORTMASK(ch) (strchr(sort_mask, ch) != NULL)
120 static u_int32_t net_mask __P((struct in_addr));
123 #if !defined(isascii) /*%< XXX - could be a function */
124 # define isascii(c) (!(c & 0200))
128 * Resolver state default settings.
132 * Set up default settings. If the configuration file exist, the values
133 * there will have precedence. Otherwise, the server address is set to
134 * INADDR_ANY and the default domain name comes from the gethostname().
136 * An interrim version of this code (BIND 4.9, pre-4.4BSD) used 127.0.0.1
137 * rather than INADDR_ANY ("0.0.0.0") as the default name server address
138 * since it was noted that INADDR_ANY actually meant ``the first interface
139 * you "ifconfig"'d at boot time'' and if this was a SLIP or PPP interface,
140 * it had to be "up" in order for you to reach your own name server. It
141 * was later decided that since the recommended practice is to always
142 * install local static routes through 127.0.0.1 for all your network
143 * interfaces, that we could solve this problem without a code change.
145 * The configuration file should always be used, since it is the only way
146 * to specify a default domain. If you are running a server on your local
147 * machine, you should say "nameserver 0.0.0.0" or "nameserver 127.0.0.1"
148 * in the configuration file.
150 * Return 0 if completes successfully, -1 on error
153 res_ninit(res_state statp) {
154 extern int __res_vinit(res_state, int);
156 return (__res_vinit(statp, 0));
159 /*% This function has to be reachable by res_data.c but not publically. */
161 __res_vinit(res_state statp, int preinit) {
163 register char *cp, **pp;
166 int nserv = 0; /*%< number of nameserver records read from file */
174 union res_sockaddr_union u[2];
177 RES_SET_H_ERRNO(statp, 0);
178 if (statp->_u._ext.ext != NULL)
182 statp->retrans = RES_TIMEOUT;
183 statp->retry = RES_DFLRETRY;
184 statp->options = RES_DEFAULT;
185 statp->id = res_randomid();
188 memset(u, 0, sizeof(u));
190 u[nserv].sin.sin_addr = inet_makeaddr(IN_LOOPBACKNET, 1);
192 u[nserv].sin.sin_addr.s_addr = INADDR_ANY;
194 u[nserv].sin.sin_family = AF_INET;
195 u[nserv].sin.sin_port = htons(NAMESERVER_PORT);
197 u[nserv].sin.sin_len = sizeof(struct sockaddr_in);
200 #ifdef HAS_INET6_STRUCTS
202 u[nserv].sin6.sin6_addr = in6addr_loopback;
204 u[nserv].sin6.sin6_addr = in6addr_any;
206 u[nserv].sin6.sin6_family = AF_INET6;
207 u[nserv].sin6.sin6_port = htons(NAMESERVER_PORT);
209 u[nserv].sin6.sin6_len = sizeof(struct sockaddr_in6);
220 statp->_u._ext.nscount = 0;
221 statp->_u._ext.ext = malloc(sizeof(*statp->_u._ext.ext));
222 if (statp->_u._ext.ext != NULL) {
223 memset(statp->_u._ext.ext, 0, sizeof(*statp->_u._ext.ext));
224 statp->_u._ext.ext->nsaddrs[0].sin = statp->nsaddr;
225 strcpy(statp->_u._ext.ext->nsuffix, "ip6.arpa");
226 strcpy(statp->_u._ext.ext->nsuffix2, "ip6.int");
229 * Historically res_init() rarely, if at all, failed.
230 * Examples and applications exist which do not check
231 * our return code. Furthermore several applications
232 * simply call us to get the systems domainname. So
233 * rather then immediately fail here we store the
234 * failure, which is returned later, in h_errno. And
235 * prevent the collection of 'nameserver' information
236 * by setting maxns to 0. Thus applications that fail
237 * to check our return code wont be able to make
240 RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
246 res_setservers(statp, u, nserv);
250 * The old libresolv derived the defaultdomain from NIS/NIS+.
251 * We want to keep this behaviour
254 char buf[sizeof(statp->defdname)], *cp;
257 if ((ret = sysinfo(SI_SRPC_DOMAIN, buf, sizeof(buf))) > 0 &&
258 (unsigned int)ret <= sizeof(buf)) {
261 cp = strchr(buf, '.');
262 cp = (cp == NULL) ? buf : (cp + 1);
263 strncpy(statp->defdname, cp,
264 sizeof(statp->defdname) - 1);
265 statp->defdname[sizeof(statp->defdname) - 1] = '\0';
268 #endif /* SOLARIS2 */
270 /* Allow user to override the local domain definition */
271 if ((cp = getenv("LOCALDOMAIN")) != NULL) {
272 (void)strncpy(statp->defdname, cp, sizeof(statp->defdname) - 1);
273 statp->defdname[sizeof(statp->defdname) - 1] = '\0';
277 * Set search list to be blank-separated strings
278 * from rest of env value. Permits users of LOCALDOMAIN
279 * to still have a search list, and anyone to set the
280 * one that they want to use as an individual (even more
281 * important now that the rfc1535 stuff restricts searches)
283 cp = statp->defdname;
286 for (n = 0; *cp && pp < statp->dnsrch + MAXDNSRCH; cp++) {
287 if (*cp == '\n') /*%< silly backwards compat */
289 else if (*cp == ' ' || *cp == '\t') {
298 /* null terminate last domain if there are excess */
299 while (*cp != '\0' && *cp != ' ' && *cp != '\t' && *cp != '\n')
305 #define MATCH(line, name) \
306 (!strncmp(line, name, sizeof(name) - 1) && \
307 (line[sizeof(name) - 1] == ' ' || \
308 line[sizeof(name) - 1] == '\t'))
311 if ((fp = fopen(_PATH_RESCONF, "r")) != NULL) {
312 /* read the config file */
313 while (fgets(buf, sizeof(buf), fp) != NULL) {
315 if (*buf == ';' || *buf == '#')
317 /* read default domain name */
318 if (MATCH(buf, "domain")) {
319 if (haveenv) /*%< skip if have from environ */
321 cp = buf + sizeof("domain") - 1;
322 while (*cp == ' ' || *cp == '\t')
324 if ((*cp == '\0') || (*cp == '\n'))
326 strncpy(statp->defdname, cp, sizeof(statp->defdname) - 1);
327 statp->defdname[sizeof(statp->defdname) - 1] = '\0';
328 if ((cp = strpbrk(statp->defdname, " \t\n")) != NULL)
333 /* set search list */
334 if (MATCH(buf, "search")) {
335 if (haveenv) /*%< skip if have from environ */
337 cp = buf + sizeof("search") - 1;
338 while (*cp == ' ' || *cp == '\t')
340 if ((*cp == '\0') || (*cp == '\n'))
342 strncpy(statp->defdname, cp, sizeof(statp->defdname) - 1);
343 statp->defdname[sizeof(statp->defdname) - 1] = '\0';
344 if ((cp = strchr(statp->defdname, '\n')) != NULL)
347 * Set search list to be blank-separated strings
350 cp = statp->defdname;
353 for (n = 0; *cp && pp < statp->dnsrch + MAXDNSRCH; cp++) {
354 if (*cp == ' ' || *cp == '\t') {
362 /* null terminate last domain if there are excess */
363 while (*cp != '\0' && *cp != ' ' && *cp != '\t')
370 /* read nameservers to query */
371 if (MATCH(buf, "nameserver") && nserv < maxns) {
372 struct addrinfo hints, *ai;
373 char sbuf[NI_MAXSERV];
374 const size_t minsiz =
375 sizeof(statp->_u._ext.ext->nsaddrs[0]);
377 cp = buf + sizeof("nameserver") - 1;
378 while (*cp == ' ' || *cp == '\t')
380 cp[strcspn(cp, ";# \t\n")] = '\0';
381 if ((*cp != '\0') && (*cp != '\n')) {
382 memset(&hints, 0, sizeof(hints));
383 hints.ai_family = PF_UNSPEC;
384 hints.ai_socktype = SOCK_DGRAM; /*dummy*/
385 hints.ai_flags = AI_NUMERICHOST;
386 sprintf(sbuf, "%u", NAMESERVER_PORT);
387 if (getaddrinfo(cp, sbuf, &hints, &ai) == 0 &&
388 ai->ai_addrlen <= minsiz) {
389 if (statp->_u._ext.ext != NULL) {
390 memcpy(&statp->_u._ext.ext->nsaddrs[nserv],
391 ai->ai_addr, ai->ai_addrlen);
393 if (ai->ai_addrlen <=
394 sizeof(statp->nsaddr_list[nserv])) {
395 memcpy(&statp->nsaddr_list[nserv],
396 ai->ai_addr, ai->ai_addrlen);
398 statp->nsaddr_list[nserv].sin_family = 0;
406 if (MATCH(buf, "sortlist")) {
409 cp = buf + sizeof("sortlist") - 1;
410 while (nsort < MAXRESOLVSORT) {
411 while (*cp == ' ' || *cp == '\t')
413 if (*cp == '\0' || *cp == '\n' || *cp == ';')
416 while (*cp && !ISSORTMASK(*cp) && *cp != ';' &&
417 isascii(*cp) && !isspace((unsigned char)*cp))
421 if (inet_aton(net, &a)) {
422 statp->sort_list[nsort].addr = a;
426 while (*cp && *cp != ';' &&
428 !isspace((unsigned char)*cp))
432 if (inet_aton(net, &a)) {
433 statp->sort_list[nsort].mask = a.s_addr;
435 statp->sort_list[nsort].mask =
436 net_mask(statp->sort_list[nsort].addr);
439 statp->sort_list[nsort].mask =
440 net_mask(statp->sort_list[nsort].addr);
449 if (MATCH(buf, "options")) {
450 res_setoptions(statp, buf + sizeof("options") - 1, "conf");
455 statp->nscount = nserv;
457 statp->nsort = nsort;
462 * Last chance to get a nameserver. This should not normally
465 #ifdef NO_RESOLV_CONF
467 nserv = get_nameservers(statp);
470 if (statp->defdname[0] == 0 &&
471 gethostname(buf, sizeof(statp->defdname) - 1) == 0 &&
472 (cp = strchr(buf, '.')) != NULL)
473 strcpy(statp->defdname, cp + 1);
475 /* find components of local domain that might be searched */
476 if (havesearch == 0) {
478 *pp++ = statp->defdname;
482 for (cp = statp->defdname; *cp; cp++)
483 dots += (*cp == '.');
485 cp = statp->defdname;
486 while (pp < statp->dnsrch + MAXDFLSRCH) {
487 if (dots < LOCALDOMAINPARTS)
489 cp = strchr(cp, '.') + 1; /*%< we know there is one */
495 if (statp->options & RES_DEBUG) {
496 printf(";; res_init()... default dnsrch list:\n");
497 for (pp = statp->dnsrch; *pp; pp++)
498 printf(";;\t%s\n", *pp);
499 printf(";;\t..END..\n");
504 if ((cp = getenv("RES_OPTIONS")) != NULL)
505 res_setoptions(statp, cp, "env");
506 statp->options |= RES_INIT;
507 return (statp->res_h_errno);
511 res_setoptions(res_state statp, const char *options, const char *source)
513 const char *cp = options;
516 struct __res_state_ext *ext = statp->_u._ext.ext;
520 if (statp->options & RES_DEBUG)
521 printf(";; res_setoptions(\"%s\", \"%s\")...\n",
525 /* skip leading and inner runs of spaces */
526 while (*cp == ' ' || *cp == '\t')
528 /* search for and process individual options */
529 if (!strncmp(cp, "ndots:", sizeof("ndots:") - 1)) {
530 i = atoi(cp + sizeof("ndots:") - 1);
531 if (i <= RES_MAXNDOTS)
534 statp->ndots = RES_MAXNDOTS;
536 if (statp->options & RES_DEBUG)
537 printf(";;\tndots=%d\n", statp->ndots);
539 } else if (!strncmp(cp, "timeout:", sizeof("timeout:") - 1)) {
540 i = atoi(cp + sizeof("timeout:") - 1);
541 if (i <= RES_MAXRETRANS)
544 statp->retrans = RES_MAXRETRANS;
546 if (statp->options & RES_DEBUG)
547 printf(";;\ttimeout=%d\n", statp->retrans);
550 } else if (!strncmp(cp, "retrans:", sizeof("retrans:") - 1)) {
552 * For backward compatibility, 'retrans' is
553 * supported as an alias for 'timeout', though
554 * without an imposed maximum.
556 statp->retrans = atoi(cp + sizeof("retrans:") - 1);
557 } else if (!strncmp(cp, "retry:", sizeof("retry:") - 1)){
559 * For backward compatibility, 'retry' is
560 * supported as an alias for 'attempts', though
561 * without an imposed maximum.
563 statp->retry = atoi(cp + sizeof("retry:") - 1);
564 #endif /* SOLARIS2 */
565 } else if (!strncmp(cp, "attempts:", sizeof("attempts:") - 1)){
566 i = atoi(cp + sizeof("attempts:") - 1);
567 if (i <= RES_MAXRETRY)
570 statp->retry = RES_MAXRETRY;
572 if (statp->options & RES_DEBUG)
573 printf(";;\tattempts=%d\n", statp->retry);
575 } else if (!strncmp(cp, "debug", sizeof("debug") - 1)) {
577 if (!(statp->options & RES_DEBUG)) {
578 printf(";; res_setoptions(\"%s\", \"%s\")..\n",
580 statp->options |= RES_DEBUG;
582 printf(";;\tdebug\n");
584 } else if (!strncmp(cp, "no_tld_query",
585 sizeof("no_tld_query") - 1) ||
586 !strncmp(cp, "no-tld-query",
587 sizeof("no-tld-query") - 1)) {
588 statp->options |= RES_NOTLDQUERY;
589 } else if (!strncmp(cp, "inet6", sizeof("inet6") - 1)) {
590 statp->options |= RES_USE_INET6;
591 } else if (!strncmp(cp, "rotate", sizeof("rotate") - 1)) {
592 statp->options |= RES_ROTATE;
593 } else if (!strncmp(cp, "no-check-names",
594 sizeof("no-check-names") - 1)) {
595 statp->options |= RES_NOCHECKNAME;
598 else if (!strncmp(cp, "edns0", sizeof("edns0") - 1)) {
599 statp->options |= RES_USE_EDNS0;
603 else if (!strncmp(cp, "dname", sizeof("dname") - 1)) {
604 statp->options |= RES_USE_DNAME;
606 else if (!strncmp(cp, "nibble:", sizeof("nibble:") - 1)) {
609 cp += sizeof("nibble:") - 1;
610 i = MIN(strcspn(cp, " \t"), sizeof(ext->nsuffix) - 1);
611 strncpy(ext->nsuffix, cp, i);
612 ext->nsuffix[i] = '\0';
614 else if (!strncmp(cp, "nibble2:", sizeof("nibble2:") - 1)) {
617 cp += sizeof("nibble2:") - 1;
618 i = MIN(strcspn(cp, " \t"), sizeof(ext->nsuffix2) - 1);
619 strncpy(ext->nsuffix2, cp, i);
620 ext->nsuffix2[i] = '\0';
622 else if (!strncmp(cp, "v6revmode:", sizeof("v6revmode:") - 1)) {
623 cp += sizeof("v6revmode:") - 1;
624 /* "nibble" and "bitstring" used to be valid */
625 if (!strncmp(cp, "single", sizeof("single") - 1)) {
626 statp->options |= RES_NO_NIBBLE2;
627 } else if (!strncmp(cp, "both", sizeof("both") - 1)) {
634 /* XXX - print a warning here? */
639 /* skip to next run of spaces */
640 while (*cp && *cp != ' ' && *cp != '\t')
646 /* XXX - should really support CIDR which means explicit masks always. */
648 net_mask(in) /*!< XXX - should really use system's version of this */
651 register u_int32_t i = ntohl(in.s_addr);
654 return (htonl(IN_CLASSA_NET));
655 else if (IN_CLASSB(i))
656 return (htonl(IN_CLASSB_NET));
657 return (htonl(IN_CLASSC_NET));
665 gettimeofday(&now, NULL);
666 return (0xffff & (now.tv_sec ^ now.tv_usec ^ getpid()));
670 * This routine is for closing the socket if a virtual circuit is used and
671 * the program wants to close it. This provides support for endhostent()
672 * which expects to close the socket.
674 * This routine is not expected to be user visible.
677 res_nclose(res_state statp) {
680 if (statp->_vcsock >= 0) {
682 (void) close(statp->_vcsock);
684 _close(statp->_vcsock);
687 statp->_flags &= ~(RES_F_VC | RES_F_CONN);
689 for (ns = 0; ns < statp->_u._ext.nscount; ns++) {
690 if (statp->_u._ext.nssocks[ns] != -1) {
692 (void) close(statp->_u._ext.nssocks[ns]);
694 _close(statp->_u._ext.nssocks[ns]);
696 statp->_u._ext.nssocks[ns] = -1;
702 res_ndestroy(res_state statp) {
704 if (statp->_u._ext.ext != NULL)
705 free(statp->_u._ext.ext);
706 statp->options &= ~RES_INIT;
707 statp->_u._ext.ext = NULL;
712 res_get_nibblesuffix(res_state statp) {
713 if (statp->_u._ext.ext)
714 return (statp->_u._ext.ext->nsuffix);
719 res_get_nibblesuffix2(res_state statp) {
720 if (statp->_u._ext.ext)
721 return (statp->_u._ext.ext->nsuffix2);
727 res_setservers(res_state statp, const union res_sockaddr_union *set, int cnt) {
731 /* close open servers */
734 /* cause rtt times to be forgotten */
735 statp->_u._ext.nscount = 0;
738 for (i = 0; i < cnt && nserv < MAXNS; i++) {
739 switch (set->sin.sin_family) {
741 size = sizeof(set->sin);
742 if (statp->_u._ext.ext)
743 memcpy(&statp->_u._ext.ext->nsaddrs[nserv],
745 if (size <= sizeof(statp->nsaddr_list[nserv]))
746 memcpy(&statp->nsaddr_list[nserv],
749 statp->nsaddr_list[nserv].sin_family = 0;
753 #ifdef HAS_INET6_STRUCTS
755 size = sizeof(set->sin6);
756 if (statp->_u._ext.ext)
757 memcpy(&statp->_u._ext.ext->nsaddrs[nserv],
759 if (size <= sizeof(statp->nsaddr_list[nserv]))
760 memcpy(&statp->nsaddr_list[nserv],
763 statp->nsaddr_list[nserv].sin_family = 0;
773 statp->nscount = nserv;
778 res_getservers(res_state statp, union res_sockaddr_union *set, int cnt) {
783 for (i = 0; i < statp->nscount && i < cnt; i++) {
784 if (statp->_u._ext.ext)
785 family = statp->_u._ext.ext->nsaddrs[i].sin.sin_family;
787 family = statp->nsaddr_list[i].sin_family;
791 size = sizeof(set->sin);
792 if (statp->_u._ext.ext)
794 &statp->_u._ext.ext->nsaddrs[i],
797 memcpy(&set->sin, &statp->nsaddr_list[i],
801 #ifdef HAS_INET6_STRUCTS
803 size = sizeof(set->sin6);
804 if (statp->_u._ext.ext)
806 &statp->_u._ext.ext->nsaddrs[i],
809 memcpy(&set->sin6, &statp->nsaddr_list[i],
815 set->sin.sin_family = 0;
820 return (statp->nscount);