17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * Issues to be discussed:
37c478bd9Sstevel@tonic-gate * - Thread safe-ness must be checked
47c478bd9Sstevel@tonic-gate */
57c478bd9Sstevel@tonic-gate
6*9525b14bSRao Shoaib #if ( defined(__linux__) || defined(__linux) || defined(LINUX) )
7*9525b14bSRao Shoaib #ifndef IF_NAMESIZE
8*9525b14bSRao Shoaib # ifdef IFNAMSIZ
9*9525b14bSRao Shoaib # define IF_NAMESIZE IFNAMSIZ
10*9525b14bSRao Shoaib # else
11*9525b14bSRao Shoaib # define IF_NAMESIZE 16
12*9525b14bSRao Shoaib # endif
13*9525b14bSRao Shoaib #endif
14*9525b14bSRao Shoaib #endif
15*9525b14bSRao Shoaib
167c478bd9Sstevel@tonic-gate /*
177c478bd9Sstevel@tonic-gate * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
187c478bd9Sstevel@tonic-gate * All rights reserved.
197c478bd9Sstevel@tonic-gate *
207c478bd9Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without
217c478bd9Sstevel@tonic-gate * modification, are permitted provided that the following conditions
227c478bd9Sstevel@tonic-gate * are met:
237c478bd9Sstevel@tonic-gate * 1. Redistributions of source code must retain the above copyright
247c478bd9Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer.
257c478bd9Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright
267c478bd9Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in the
277c478bd9Sstevel@tonic-gate * documentation and/or other materials provided with the distribution.
287c478bd9Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this software
297c478bd9Sstevel@tonic-gate * must display the following acknowledgement:
307c478bd9Sstevel@tonic-gate * This product includes software developed by WIDE Project and
317c478bd9Sstevel@tonic-gate * its contributors.
327c478bd9Sstevel@tonic-gate * 4. Neither the name of the project nor the names of its contributors
337c478bd9Sstevel@tonic-gate * may be used to endorse or promote products derived from this software
347c478bd9Sstevel@tonic-gate * without specific prior written permission.
357c478bd9Sstevel@tonic-gate *
367c478bd9Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
377c478bd9Sstevel@tonic-gate * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
387c478bd9Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
397c478bd9Sstevel@tonic-gate * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
407c478bd9Sstevel@tonic-gate * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
417c478bd9Sstevel@tonic-gate * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
427c478bd9Sstevel@tonic-gate * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
437c478bd9Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
447c478bd9Sstevel@tonic-gate * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
457c478bd9Sstevel@tonic-gate * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
467c478bd9Sstevel@tonic-gate * SUCH DAMAGE.
477c478bd9Sstevel@tonic-gate */
487c478bd9Sstevel@tonic-gate
497c478bd9Sstevel@tonic-gate #include <port_before.h>
507c478bd9Sstevel@tonic-gate
517c478bd9Sstevel@tonic-gate #include <sys/types.h>
527c478bd9Sstevel@tonic-gate #include <sys/socket.h>
537c478bd9Sstevel@tonic-gate
547c478bd9Sstevel@tonic-gate #include <netinet/in.h>
557c478bd9Sstevel@tonic-gate #include <arpa/nameser.h>
567c478bd9Sstevel@tonic-gate #include <arpa/inet.h>
577c478bd9Sstevel@tonic-gate #include <net/if.h>
587c478bd9Sstevel@tonic-gate
597c478bd9Sstevel@tonic-gate #include <netdb.h>
607c478bd9Sstevel@tonic-gate #include <resolv.h>
617c478bd9Sstevel@tonic-gate #include <string.h>
627c478bd9Sstevel@tonic-gate #include <stddef.h>
637c478bd9Sstevel@tonic-gate
647c478bd9Sstevel@tonic-gate #include <port_after.h>
657c478bd9Sstevel@tonic-gate
66*9525b14bSRao Shoaib /*%
677c478bd9Sstevel@tonic-gate * Note that a_off will be dynamically adjusted so that to be consistent
687c478bd9Sstevel@tonic-gate * with the definition of sockaddr_in{,6}.
697c478bd9Sstevel@tonic-gate * The value presented below is just a guess.
707c478bd9Sstevel@tonic-gate */
717c478bd9Sstevel@tonic-gate static struct afd {
727c478bd9Sstevel@tonic-gate int a_af;
737c478bd9Sstevel@tonic-gate int a_addrlen;
747c478bd9Sstevel@tonic-gate size_t a_socklen;
757c478bd9Sstevel@tonic-gate int a_off;
767c478bd9Sstevel@tonic-gate } afdl [] = {
777c478bd9Sstevel@tonic-gate /* first entry is linked last... */
787c478bd9Sstevel@tonic-gate {PF_INET, sizeof(struct in_addr), sizeof(struct sockaddr_in),
797c478bd9Sstevel@tonic-gate offsetof(struct sockaddr_in, sin_addr)},
807c478bd9Sstevel@tonic-gate {PF_INET6, sizeof(struct in6_addr), sizeof(struct sockaddr_in6),
817c478bd9Sstevel@tonic-gate offsetof(struct sockaddr_in6, sin6_addr)},
827c478bd9Sstevel@tonic-gate {0, 0, 0, 0},
837c478bd9Sstevel@tonic-gate };
847c478bd9Sstevel@tonic-gate
857c478bd9Sstevel@tonic-gate struct sockinet {
867c478bd9Sstevel@tonic-gate #ifdef HAVE_SA_LEN
877c478bd9Sstevel@tonic-gate u_char si_len;
887c478bd9Sstevel@tonic-gate #endif
897c478bd9Sstevel@tonic-gate u_char si_family;
907c478bd9Sstevel@tonic-gate u_short si_port;
917c478bd9Sstevel@tonic-gate };
927c478bd9Sstevel@tonic-gate
937c478bd9Sstevel@tonic-gate static int ip6_parsenumeric __P((const struct sockaddr *, const char *, char *,
947c478bd9Sstevel@tonic-gate size_t, int));
957c478bd9Sstevel@tonic-gate #ifdef HAVE_SIN6_SCOPE_ID
967c478bd9Sstevel@tonic-gate static int ip6_sa2str __P((const struct sockaddr_in6 *, char *, size_t, int));
977c478bd9Sstevel@tonic-gate #endif
987c478bd9Sstevel@tonic-gate
997c478bd9Sstevel@tonic-gate int
getnameinfo(sa,salen,host,hostlen,serv,servlen,flags)1007c478bd9Sstevel@tonic-gate getnameinfo(sa, salen, host, hostlen, serv, servlen, flags)
1017c478bd9Sstevel@tonic-gate const struct sockaddr *sa;
1027c478bd9Sstevel@tonic-gate size_t salen;
1037c478bd9Sstevel@tonic-gate char *host;
1047c478bd9Sstevel@tonic-gate size_t hostlen;
1057c478bd9Sstevel@tonic-gate char *serv;
1067c478bd9Sstevel@tonic-gate size_t servlen;
1077c478bd9Sstevel@tonic-gate int flags;
1087c478bd9Sstevel@tonic-gate {
1097c478bd9Sstevel@tonic-gate struct afd *afd;
1107c478bd9Sstevel@tonic-gate struct servent *sp;
1117c478bd9Sstevel@tonic-gate struct hostent *hp;
1127c478bd9Sstevel@tonic-gate u_short port;
1137c478bd9Sstevel@tonic-gate #ifdef HAVE_SA_LEN
1147c478bd9Sstevel@tonic-gate size_t len;
1157c478bd9Sstevel@tonic-gate #endif
1167c478bd9Sstevel@tonic-gate int family, i;
1177c478bd9Sstevel@tonic-gate const char *addr;
1187c478bd9Sstevel@tonic-gate char *p;
1197c478bd9Sstevel@tonic-gate char numserv[512];
1207c478bd9Sstevel@tonic-gate char numaddr[512];
1217c478bd9Sstevel@tonic-gate const struct sockaddr_in6 *sin6;
1227c478bd9Sstevel@tonic-gate
1237c478bd9Sstevel@tonic-gate if (sa == NULL)
1247c478bd9Sstevel@tonic-gate return EAI_FAIL;
1257c478bd9Sstevel@tonic-gate
1267c478bd9Sstevel@tonic-gate #ifdef HAVE_SA_LEN
1277c478bd9Sstevel@tonic-gate len = sa->sa_len;
1287c478bd9Sstevel@tonic-gate if (len != salen) return EAI_FAIL;
1297c478bd9Sstevel@tonic-gate #endif
1307c478bd9Sstevel@tonic-gate
1317c478bd9Sstevel@tonic-gate family = sa->sa_family;
1327c478bd9Sstevel@tonic-gate for (i = 0; afdl[i].a_af; i++)
1337c478bd9Sstevel@tonic-gate if (afdl[i].a_af == family) {
1347c478bd9Sstevel@tonic-gate afd = &afdl[i];
1357c478bd9Sstevel@tonic-gate goto found;
1367c478bd9Sstevel@tonic-gate }
1377c478bd9Sstevel@tonic-gate return EAI_FAMILY;
1387c478bd9Sstevel@tonic-gate
1397c478bd9Sstevel@tonic-gate found:
1407c478bd9Sstevel@tonic-gate if (salen != afd->a_socklen) return EAI_FAIL;
1417c478bd9Sstevel@tonic-gate
142*9525b14bSRao Shoaib port = ((const struct sockinet *)sa)->si_port; /*%< network byte order */
1437c478bd9Sstevel@tonic-gate addr = (const char *)sa + afd->a_off;
1447c478bd9Sstevel@tonic-gate
145*9525b14bSRao Shoaib if (serv == NULL || servlen == 0U) {
1467c478bd9Sstevel@tonic-gate /*
1477c478bd9Sstevel@tonic-gate * rfc2553bis says that serv == NULL or servlen == 0 means that
1487c478bd9Sstevel@tonic-gate * the caller does not want the result.
1497c478bd9Sstevel@tonic-gate */
1507c478bd9Sstevel@tonic-gate } else if (flags & NI_NUMERICSERV) {
1517c478bd9Sstevel@tonic-gate sprintf(numserv, "%d", ntohs(port));
1527c478bd9Sstevel@tonic-gate if (strlen(numserv) > servlen)
1537c478bd9Sstevel@tonic-gate return EAI_MEMORY;
1547c478bd9Sstevel@tonic-gate strcpy(serv, numserv);
1557c478bd9Sstevel@tonic-gate } else {
1567c478bd9Sstevel@tonic-gate sp = getservbyport(port, (flags & NI_DGRAM) ? "udp" : "tcp");
1577c478bd9Sstevel@tonic-gate if (sp) {
1587c478bd9Sstevel@tonic-gate if (strlen(sp->s_name) + 1 > servlen)
1597c478bd9Sstevel@tonic-gate return EAI_MEMORY;
1607c478bd9Sstevel@tonic-gate strcpy(serv, sp->s_name);
1617c478bd9Sstevel@tonic-gate } else
1627c478bd9Sstevel@tonic-gate return EAI_NONAME;
1637c478bd9Sstevel@tonic-gate }
1647c478bd9Sstevel@tonic-gate
1657c478bd9Sstevel@tonic-gate switch (sa->sa_family) {
1667c478bd9Sstevel@tonic-gate case AF_INET:
167*9525b14bSRao Shoaib if (ntohl(*(const u_int32_t *)addr) >> IN_CLASSA_NSHIFT == 0)
1687c478bd9Sstevel@tonic-gate flags |= NI_NUMERICHOST;
1697c478bd9Sstevel@tonic-gate break;
1707c478bd9Sstevel@tonic-gate case AF_INET6:
1717c478bd9Sstevel@tonic-gate sin6 = (const struct sockaddr_in6 *)sa;
1727c478bd9Sstevel@tonic-gate switch (sin6->sin6_addr.s6_addr[0]) {
1737c478bd9Sstevel@tonic-gate case 0x00:
1747c478bd9Sstevel@tonic-gate if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr))
1757c478bd9Sstevel@tonic-gate ;
1767c478bd9Sstevel@tonic-gate else if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))
1777c478bd9Sstevel@tonic-gate ;
1787c478bd9Sstevel@tonic-gate else
1797c478bd9Sstevel@tonic-gate flags |= NI_NUMERICHOST;
1807c478bd9Sstevel@tonic-gate break;
1817c478bd9Sstevel@tonic-gate default:
1827c478bd9Sstevel@tonic-gate if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr))
1837c478bd9Sstevel@tonic-gate flags |= NI_NUMERICHOST;
1847c478bd9Sstevel@tonic-gate else if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr))
1857c478bd9Sstevel@tonic-gate flags |= NI_NUMERICHOST;
1867c478bd9Sstevel@tonic-gate break;
1877c478bd9Sstevel@tonic-gate }
1887c478bd9Sstevel@tonic-gate break;
1897c478bd9Sstevel@tonic-gate }
190*9525b14bSRao Shoaib if (host == NULL || hostlen == 0U) {
1917c478bd9Sstevel@tonic-gate /*
1927c478bd9Sstevel@tonic-gate * rfc2553bis says that host == NULL or hostlen == 0 means that
1937c478bd9Sstevel@tonic-gate * the caller does not want the result.
1947c478bd9Sstevel@tonic-gate */
1957c478bd9Sstevel@tonic-gate } else if (flags & NI_NUMERICHOST) {
1967c478bd9Sstevel@tonic-gate goto numeric;
1977c478bd9Sstevel@tonic-gate } else {
1987c478bd9Sstevel@tonic-gate hp = gethostbyaddr(addr, afd->a_addrlen, afd->a_af);
1997c478bd9Sstevel@tonic-gate
2007c478bd9Sstevel@tonic-gate if (hp) {
2017c478bd9Sstevel@tonic-gate if (flags & NI_NOFQDN) {
2027c478bd9Sstevel@tonic-gate p = strchr(hp->h_name, '.');
2037c478bd9Sstevel@tonic-gate if (p) *p = '\0';
2047c478bd9Sstevel@tonic-gate }
2057c478bd9Sstevel@tonic-gate if (strlen(hp->h_name) + 1 > hostlen)
2067c478bd9Sstevel@tonic-gate return EAI_MEMORY;
2077c478bd9Sstevel@tonic-gate strcpy(host, hp->h_name);
2087c478bd9Sstevel@tonic-gate } else {
2097c478bd9Sstevel@tonic-gate if (flags & NI_NAMEREQD)
2107c478bd9Sstevel@tonic-gate return EAI_NONAME;
2117c478bd9Sstevel@tonic-gate numeric:
2127c478bd9Sstevel@tonic-gate switch(afd->a_af) {
2137c478bd9Sstevel@tonic-gate case AF_INET6:
2147c478bd9Sstevel@tonic-gate {
2157c478bd9Sstevel@tonic-gate int error;
2167c478bd9Sstevel@tonic-gate
2177c478bd9Sstevel@tonic-gate if ((error = ip6_parsenumeric(sa, addr, host,
2187c478bd9Sstevel@tonic-gate hostlen,
2197c478bd9Sstevel@tonic-gate flags)) != 0)
2207c478bd9Sstevel@tonic-gate return(error);
2217c478bd9Sstevel@tonic-gate break;
2227c478bd9Sstevel@tonic-gate }
2237c478bd9Sstevel@tonic-gate
2247c478bd9Sstevel@tonic-gate default:
2257c478bd9Sstevel@tonic-gate if (inet_ntop(afd->a_af, addr, numaddr,
2267c478bd9Sstevel@tonic-gate sizeof(numaddr)) == NULL)
2277c478bd9Sstevel@tonic-gate return EAI_NONAME;
2287c478bd9Sstevel@tonic-gate if (strlen(numaddr) + 1 > hostlen)
2297c478bd9Sstevel@tonic-gate return EAI_MEMORY;
2307c478bd9Sstevel@tonic-gate strcpy(host, numaddr);
2317c478bd9Sstevel@tonic-gate }
2327c478bd9Sstevel@tonic-gate }
2337c478bd9Sstevel@tonic-gate }
2347c478bd9Sstevel@tonic-gate return(0);
2357c478bd9Sstevel@tonic-gate }
2367c478bd9Sstevel@tonic-gate
2377c478bd9Sstevel@tonic-gate static int
ip6_parsenumeric(const struct sockaddr * sa,const char * addr,char * host,size_t hostlen,int flags)2387c478bd9Sstevel@tonic-gate ip6_parsenumeric(const struct sockaddr *sa, const char *addr, char *host,
2397c478bd9Sstevel@tonic-gate size_t hostlen, int flags)
2407c478bd9Sstevel@tonic-gate {
2417c478bd9Sstevel@tonic-gate size_t numaddrlen;
2427c478bd9Sstevel@tonic-gate char numaddr[512];
2437c478bd9Sstevel@tonic-gate
2447c478bd9Sstevel@tonic-gate #ifndef HAVE_SIN6_SCOPE_ID
2457c478bd9Sstevel@tonic-gate UNUSED(sa);
2467c478bd9Sstevel@tonic-gate UNUSED(flags);
2477c478bd9Sstevel@tonic-gate #endif
2487c478bd9Sstevel@tonic-gate
2497c478bd9Sstevel@tonic-gate if (inet_ntop(AF_INET6, addr, numaddr, sizeof(numaddr))
2507c478bd9Sstevel@tonic-gate == NULL)
2517c478bd9Sstevel@tonic-gate return EAI_SYSTEM;
2527c478bd9Sstevel@tonic-gate
2537c478bd9Sstevel@tonic-gate numaddrlen = strlen(numaddr);
254*9525b14bSRao Shoaib if (numaddrlen + 1 > hostlen) /*%< don't forget terminator */
2557c478bd9Sstevel@tonic-gate return EAI_MEMORY;
2567c478bd9Sstevel@tonic-gate strcpy(host, numaddr);
2577c478bd9Sstevel@tonic-gate
2587c478bd9Sstevel@tonic-gate #ifdef HAVE_SIN6_SCOPE_ID
2597c478bd9Sstevel@tonic-gate if (((const struct sockaddr_in6 *)sa)->sin6_scope_id) {
260*9525b14bSRao Shoaib char scopebuf[MAXHOSTNAMELEN]; /*%< XXX */
2617c478bd9Sstevel@tonic-gate int scopelen;
2627c478bd9Sstevel@tonic-gate
2637c478bd9Sstevel@tonic-gate /* ip6_sa2str never fails */
2647c478bd9Sstevel@tonic-gate scopelen = ip6_sa2str((const struct sockaddr_in6 *)sa,
2657c478bd9Sstevel@tonic-gate scopebuf, sizeof(scopebuf), flags);
2667c478bd9Sstevel@tonic-gate
2677c478bd9Sstevel@tonic-gate if (scopelen + 1 + numaddrlen + 1 > hostlen)
2687c478bd9Sstevel@tonic-gate return EAI_MEMORY;
2697c478bd9Sstevel@tonic-gate
2707c478bd9Sstevel@tonic-gate /* construct <numeric-addr><delim><scopeid> */
2717c478bd9Sstevel@tonic-gate memcpy(host + numaddrlen + 1, scopebuf,
2727c478bd9Sstevel@tonic-gate scopelen);
2737c478bd9Sstevel@tonic-gate host[numaddrlen] = SCOPE_DELIMITER;
2747c478bd9Sstevel@tonic-gate host[numaddrlen + 1 + scopelen] = '\0';
2757c478bd9Sstevel@tonic-gate }
2767c478bd9Sstevel@tonic-gate #endif
2777c478bd9Sstevel@tonic-gate
2787c478bd9Sstevel@tonic-gate return 0;
2797c478bd9Sstevel@tonic-gate }
2807c478bd9Sstevel@tonic-gate
2817c478bd9Sstevel@tonic-gate #ifdef HAVE_SIN6_SCOPE_ID
2827c478bd9Sstevel@tonic-gate /* ARGSUSED */
2837c478bd9Sstevel@tonic-gate static int
ip6_sa2str(const struct sockaddr_in6 * sa6,char * buf,size_t bufsiz,int flags)2847c478bd9Sstevel@tonic-gate ip6_sa2str(const struct sockaddr_in6 *sa6, char *buf,
2857c478bd9Sstevel@tonic-gate size_t bufsiz, int flags)
2867c478bd9Sstevel@tonic-gate {
2877c478bd9Sstevel@tonic-gate #ifdef USE_IFNAMELINKID
2887c478bd9Sstevel@tonic-gate unsigned int ifindex = (unsigned int)sa6->sin6_scope_id;
2897c478bd9Sstevel@tonic-gate const struct in6_addr *a6 = &sa6->sin6_addr;
2907c478bd9Sstevel@tonic-gate #endif
2917c478bd9Sstevel@tonic-gate char tmp[64];
2927c478bd9Sstevel@tonic-gate
2937c478bd9Sstevel@tonic-gate #ifdef NI_NUMERICSCOPE
2947c478bd9Sstevel@tonic-gate if (flags & NI_NUMERICSCOPE) {
2957c478bd9Sstevel@tonic-gate sprintf(tmp, "%u", sa6->sin6_scope_id);
296*9525b14bSRao Shoaib if (bufsiz != 0U) {
2977c478bd9Sstevel@tonic-gate strncpy(buf, tmp, bufsiz - 1);
2987c478bd9Sstevel@tonic-gate buf[bufsiz - 1] = '\0';
2997c478bd9Sstevel@tonic-gate }
3007c478bd9Sstevel@tonic-gate return(strlen(tmp));
3017c478bd9Sstevel@tonic-gate }
3027c478bd9Sstevel@tonic-gate #endif
3037c478bd9Sstevel@tonic-gate
3047c478bd9Sstevel@tonic-gate #ifdef USE_IFNAMELINKID
3057c478bd9Sstevel@tonic-gate /*
3067c478bd9Sstevel@tonic-gate * For a link-local address, convert the index to an interface
3077c478bd9Sstevel@tonic-gate * name, assuming a one-to-one mapping between links and interfaces.
3087c478bd9Sstevel@tonic-gate * Note, however, that this assumption is stronger than the
3097c478bd9Sstevel@tonic-gate * specification of the scoped address architecture; the
3107c478bd9Sstevel@tonic-gate * specficication says that more than one interfaces can belong to
3117c478bd9Sstevel@tonic-gate * a single link.
3127c478bd9Sstevel@tonic-gate */
3137c478bd9Sstevel@tonic-gate
3147c478bd9Sstevel@tonic-gate /* if_indextoname() does not take buffer size. not a good api... */
3157c478bd9Sstevel@tonic-gate if ((IN6_IS_ADDR_LINKLOCAL(a6) || IN6_IS_ADDR_MC_LINKLOCAL(a6)) &&
3167c478bd9Sstevel@tonic-gate bufsiz >= IF_NAMESIZE) {
3177c478bd9Sstevel@tonic-gate char *p = if_indextoname(ifindex, buf);
3187c478bd9Sstevel@tonic-gate if (p) {
3197c478bd9Sstevel@tonic-gate return(strlen(p));
3207c478bd9Sstevel@tonic-gate }
3217c478bd9Sstevel@tonic-gate }
3227c478bd9Sstevel@tonic-gate #endif
3237c478bd9Sstevel@tonic-gate
3247c478bd9Sstevel@tonic-gate /* last resort */
3257c478bd9Sstevel@tonic-gate sprintf(tmp, "%u", sa6->sin6_scope_id);
326*9525b14bSRao Shoaib if (bufsiz != 0U) {
3277c478bd9Sstevel@tonic-gate strncpy(buf, tmp, bufsiz - 1);
3287c478bd9Sstevel@tonic-gate buf[bufsiz - 1] = '\0';
3297c478bd9Sstevel@tonic-gate }
3307c478bd9Sstevel@tonic-gate return(strlen(tmp));
3317c478bd9Sstevel@tonic-gate }
3327c478bd9Sstevel@tonic-gate #endif
333*9525b14bSRao Shoaib
334*9525b14bSRao Shoaib /*! \file */
335