Tue Jun 25 02:59:11 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>cvs/libc-960625

	* malloc/malloc.h: Declare malloc_object_allocated_size, malloc_walk.
	* malloc/Makefile (dist-routines): Add malloc-size, malloc-walk.
	* malloc/malloc-size.c: New file.
	* malloc/malloc-walk.c: New file.

	* malloc/malloc-find.c (malloc_find_object_address): Return null if
	PTR is outside the heap.

	* elf/dl-load.c (_dl_map_object): If the requested name matches the
 	soname of a loaded object, use that object.

Mon Jun 24 19:57:01 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>

	* Makefile (subdirs): Add nss.

	* inet/Makefile (routines): Add getrpcent, getrpcbyname,
	getrpcbynumber, getrpcent_r, getrpcbyname_r, getrpcbynumber_r.
	* inet/getrpcbynumber_r.c: New file.
	* inet/getrpcbynumber.c: New file.
	* inet/getrpcbyname.c: New file.
	* inet/getrpcbyname_r.c: New file.
	* inet/getrpcent_r.c: New file.
	* inet/getrpcent.c: New file.
	* nss/rpc-lookup.c: New file.
	* nss/nss_files/files-rpc.c: New file.
	* nss/Makefile (routines): Add rpc-lookup.
	(libnss_files-routines): Add files-rpc.
	* sunrpc/Makefile (routines): Remove getrpcent.
	* sunrpc/getrpcent.c: File removed.

	* nss/getXXent_r.c (REENTRANT_GETNAME): Clear NO_MORE when NIP is
	non-null on entry.

	* Makeconfig (rpath-link): Add $(nssobjdir).
	(nssobjdir): New variable.

	* Makerules: Move shared library building before objects rules, so
	versions are known before extra-lib.mk gets included.
	* extra-lib.mk (lib-noranlib): Depend on the shared object too.

	* pwd/getpwuid.c: Rewritten using nss.
	* pwd/getpwnam.c: Likewise.
	* pwd/getpwent.c: Likewise.
	* grp/getgrnam.c: Likewise.
	* grp/getgrgid.c: Likewise.
	* grp/getgrent.c: Likewise.
	* pwd/Makefile (routines): Add getpwent_r, getpwnam_r, getpwuid_r.
	* pwd/getpwent_r.c: New file.
	* pwd/getpwnam_r.c: New file.
	* pwd/getpwuid_r.c: New file.
	* grp/Makefile (routines): Add getgrent_r, getgrgid_r, getgrnam_r.
	* grp/getgrnam_r.c: New file.
	* grp/getgrgid_r.c: New file.
	* grp/getgrent_r.c: New file.
	* grp/Makefile (routines): Remove grpopen, grpread.
	* pwd/Makefile (routines): Remove pwdopen, pwdread.
	* grp/grpopen.c, grp/grpread.c, pwd/pwdopen.c, pwd/pwdread.c: Removed.

	* pwd/fgetpwent.c: Rewritten using files-parse.c.
	* grp/fgetgrent.c: Likewise.

	* nss/Makefile (routines): Add grp-lookup and pwd-lookup.
	* nss/pwd-lookup.c, nss/grp-lookup.c: New files.
	* nss/nss_files/files-grp.c: New file.
	* nss/nss_files/files-pwd.c: New file.

	* nss/Makefile (subdir-dirs): New variable; use it in vpath.

	* nss/nss_files/files-parse.c: New file.
	* nss/nss_files/files-XXX.c: New file.
	* nss/nss_files/files-hosts.c, nss/nss_files/files-proto.c,
	nss/nss_files/files-service.c, nss/nss_files/files-network.c:
	Rewritten using them.

	* nss/Makefile (libnss_files-routines): Remove files-host.
	Add files-hosts, files-grp, files-pwd.

	* nss/nss_dns/dns-network.c: Don't include <pthread.h>.

Mon Jun 24 22:39:12 1996  Richard Henderson  <rth@tamu.edu>

	* sysdeps/alpha/dl-machine.h (ELF_MACHINE_RUNTIME_TRAMPOLINE):
	A .plt entry now loads the .rela.plt offset directly rather
	than making us calculate it.

Sun Jun 23 15:24:05 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>

	* time/Makefile ($(installed-localtime-file) rule): Do
	$(make-target-directory) first.

	* resolv.h: Fix wrapper for resolv/resolv.h.

	* configure.in (ld --no-whole-archive check): Use AC_TRY_COMMAND.
	Compile dummy file and pass -nostdlib -nostartfiles so as not to
	require installed libraries.

	* shlib-versions (*-*-*): Set libresolv=2, libnss_files=1,
	libnss_dns=1.

Sun Jun 23 19:42:05 1996  Ulrich Drepper  <drepper@cygnus.com>

	* resolv/netdb.h (_PATH_NSSWITCH_CONF): New macro.

	* inet/herrno.c: New file.

	* resolv/res_init.c: Remove res_hconf calls.

	* nss/Makefile, nss/XXX-lookup.c, nss/file-lookup.c,
	nss/getXXbyYY.c, nss/getXXbyYY_r.c, nss/getXXent.c,
	nss/getXXent_r.c, nss/host-lookup.c, nss/network-lookup.c,
	nss/nsswitch.c, nss/nsswitch.h, nss/proto-lookup.c,
	nss/service-lookup.c: New files.  Implementation of name
	service switch, following the approach in Solaris.
	Interface specification and general structure inspired by Peter
	Eriksson <pen@lysator.liu.se>.
	* nss/nss_files/files-host.c, nss/nss_files/files-network.c,
	nss/nss_files/files-proto.c, nss/nss_files/files-service.c:
	Implementation of libnss_files.so module for file based databases
	in NSS service.
	* nss/nss_dns/dns-host.c, nss/nss_dns/dns-network.c: Implementation
        if libnss_dns.so module for DNS name lookup in NSS service.

	* inet/getproto.c, inet/getprtent.c, inet/getprtname.c,
	inet/getservent.c, inet/getsrvbynm.c, inet/getsrvbypt.c:
	Changed to serve as interface to NSS.
	* inet/gethstbyad.c, inet/gethstbyad_r.c, inet/gethstbynm.c,
	inet/gethstbynm2.c, inet/gethstbynm2_r.c, inet/gethstbynm_r.c,
	inet/gethstent.c, inet/gethstent_r.c, inet/getnetbynm.c,
	inet/getnetbynm_r.c, inet/getnetbypt.c, inet/getnetbypt_r.c,
	inet/getnetent.c, inet/getnetent_r.c, inet/getproto_r.c,
	inet/getprtent_r.c, inet/getprtname_r.c, inet/getservent_r.c,
	inet/getsrvbynm_r.c, inet/getsrvbypt_r.c: New files.  Implement
	interfaces to NSS, including reentrant functions.

	* resolv/getnetbyaddr.c, resolv/getnetbyname.c, resolv/getnetent.c,
	resolv/sethostent.c: Removed:  Obsoleted by NSS.

	* resolv/mapv4v6addr.h, resolv/mapv4v6hostent.h: Extracted from
	gethnamaddr.c.  These private functions are now used in more
	than one file.

	* resolv/inet_pton.c, resolv/gethnamaddr.c: Updated to bind-4.9.4-T5B.

Sat Jun 22 16:49:47 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* rpm/Makefile ($(config)): Make sure the word list in the for
	loop is syntactically non-empty.

10 files changed, 261 insertions, 768 deletions

diff --git a/resolv/gethnamaddr.c b/resolv/gethnamaddr.c
index 161060ebd6..d3c45d0446 100644
--- a/resolv/gethnamaddr.c
+++ b/resolv/gethnamaddr.c
@@ -65,16 +65,12 @@ static char rcsid[] = "$Id$";
 #include <arpa/nameser.h>
 
 #include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
 #include <netdb.h>
 #include <resolv.h>
 #include <ctype.h>
 #include <errno.h>
 #include <syslog.h>
 
-#include "res_hconf.h"
-
 #ifndef LOG_AUTH
 # define LOG_AUTH 0
 #endif
@@ -98,7 +94,6 @@ static char rcsid[] = "$Id$";
 
 #define	MAXALIASES	35
 #define	MAXADDRS	35
-#define	MAXADDRBUFSIZE	8192
 
 static const char AskedForGot[] =
 			  "gethostby*.getanswer: asked for \"%s\", got \"%s\"";
@@ -108,7 +103,7 @@ static struct hostent *gethostbyname_ipv4 __P((const char *));
 
 static struct hostent host;
 static char *host_aliases[MAXALIASES];
-static char hostbuf[MAXADDRBUFSIZE];
+static char hostbuf[8*1024];
 static u_char host_addr[16];	/* IPv4 or IPv6 */
 static FILE *hostf = NULL;
 static int stayopen = 0;
@@ -435,7 +430,7 @@ gethostbyname2(name, af)
 	querybuf buf;
 	register const char *cp;
 	char *bp;
-	int i, n, size, type, len;
+	int n, size, type, len;
 	extern struct hostent *_gethtbyname2();
 
 	if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
@@ -506,55 +501,13 @@ gethostbyname2(name, af)
 				break;
 		}
 
-	h_errno = HOST_NOT_FOUND;
-	for (i = 0; i < _res_hconf.num_services; ++i) {
-		struct hostent * hp;
-		char * cp = (char *) name;
-
-		if (_res_hconf.num_trimdomains > 0) {
-			size_t name_len = strlen(name);
-
-			cp = malloc(name_len + 1);
-			memcpy(cp, name, name_len + 1);
-			_res_hconf_trim_domain(cp);
-		}
-
-		hp = NULL;
-		switch (_res_hconf.service[i]) {
-		      case SERVICE_BIND:
-			if ((n = res_search(cp, C_IN, type,
-					    buf.buf, sizeof(buf))) < 0)
-			{
-				dprintf("res_search failed (%d)\n", n);
-				break;
-			}
-			hp = getanswer(&buf, n, cp, type);
-			break;
-
-		      case SERVICE_HOSTS:
-			hp = _gethtbyname2(cp, af);
-			break;
-#ifdef HAVE_NYS
-		      case SERVICE_NIS:
-			hp = _getnishost(cp, "hosts.byname");
-			break;
-#endif
-		      default:
-			break;
-		}
-		if (cp != name)
-			free(cp);
-		if (hp) {
-			if ((_res_hconf.flags & HCONF_FLAG_REORDER)
-			    && hp->h_addr_list[0] && hp->h_addr_list[1])
-				_res_hconf_reorder_addrs(hp);
-			_res_hconf_trim_domains(hp);
-			return hp;
-		}
+	if ((n = res_search(name, C_IN, type, buf.buf, sizeof(buf))) < 0) {
+		dprintf("res_search failed (%d)\n", n);
+		if (errno == ECONNREFUSED)
+			return (_gethtbyname2(name, af));
+		return (NULL);
 	}
-	if (h_errno == NETDB_SUCCESS)
-		h_errno = HOST_NOT_FOUND;
-	return NULL;
+	return (getanswer(&buf, n, name, type));
 }
 
 struct hostent *
@@ -569,11 +522,12 @@ gethostbyaddr(addr, len, af)
 	querybuf buf;
 	register struct hostent *hp;
 	char qbuf[MAXDNAME+1], *qp;
+#ifdef SUNSECURITY
 	register struct hostent *rhp;
 	char **haddr;
 	u_long old_options;
 	char hname2[MAXDNAME+1];
-	int i, old_num_trimdomains;
+#endif /*SUNSECURITY*/
 	extern struct hostent *_gethtbyaddr();
 
 	if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
@@ -606,130 +560,79 @@ gethostbyaddr(addr, len, af)
 		h_errno = NETDB_INTERNAL;
 		return (NULL);
 	}
-
-	h_errno = NETDB_SUCCESS;
-	for (i = 0; i < _res_hconf.num_services; ++i) {
-		hp = NULL;
-		switch (_res_hconf.service[i]) {
-		case SERVICE_BIND:
-			switch (af) {
-			case AF_INET:
-				(void) sprintf(qbuf,
-					       "%u.%u.%u.%u.in-addr.arpa",
-					       (uaddr[3] & 0xff),
-					       (uaddr[2] & 0xff),
-					       (uaddr[1] & 0xff),
-					       (uaddr[0] & 0xff));
-				break;
-			case AF_INET6:
-				qp = qbuf;
-				for (n = IN6ADDRSZ - 1; n >= 0; n--) {
-					qp += SPRINTF((qp, "%x.%x.",
-						       uaddr[n] & 0xf,
-						       (uaddr[n] >> 4) & 0xf));
-				}
-				strcpy(qp, "ip6.int");
-				break;
-			default:
-				abort();
-			}
-			n = res_query(qbuf, C_IN, T_PTR,
-				      (u_char *)buf.buf, sizeof buf.buf);
-			if (n < 0) {
-				dprintf("res_query failed (%d)\n", n);
-				break;
-			}
-			hp = getanswer(&buf, n, qbuf, T_PTR);
-			if (!hp)
-				break;	/* h_errno was set by getanswer() */
-			if (af == AF_INET
-			    && (_res_hconf.flags & HCONF_FLAG_SPOOF)) {
-				/*
-				 * Turn off search as the name should
-				 * be absolute, 'localhost' should be
-				 * matched by defnames
-				 */
-				strncpy(hname2, hp->h_name, MAXDNAME);
-				hname2[MAXDNAME] = '\0';
-				old_options = _res.options;
-				/*
-				 * Also turn off domain trimming to prevent it
-				 * from causing the name comparison to fail.
-				 */
-				old_num_trimdomains =
-					_res_hconf.num_trimdomains;
-				_res.options &= ~RES_DNSRCH;
-				_res.options |= RES_DEFNAMES;
-				rhp = gethostbyname(hname2);
-				_res.options = old_options;
-				/* There must be an A record and
-				   the names must match.  */
-				if (!rhp || strcmp(hname2, rhp->h_name)) {
-					syslog(LOG_NOTICE|LOG_AUTH,
-					       "gethostbyaddr: No A record for"
-					       " %s (verifying [%s])",
-					       hname2,
-					       inet_ntoa(*((struct in_addr *)
-							   addr)));
-					h_errno = HOST_NOT_FOUND;
-					break;
-				}
-				for (haddr = rhp->h_addr_list; *haddr; haddr++)
-					if (!memcmp(*haddr, addr, INADDRSZ))
-						break;
-				if (!*haddr) {
-					syslog(LOG_NOTICE|LOG_AUTH,
-					       "gethostbyaddr: A record of %s"
-					       " != PTR record [%s]",
-					       hname2,
-					       inet_ntoa(*((struct in_addr *)
-							   addr)));
-					h_errno = HOST_NOT_FOUND;
-					break;
-				}
-			}
-			hp->h_addrtype = af;
-			hp->h_length = len;
-			bcopy(addr, host_addr, len);
-			h_addr_ptrs[0] = (char *)host_addr;
-			h_addr_ptrs[1] = NULL;
-			if (af == AF_INET && (_res.options & RES_USE_INET6)) {
-				map_v4v6_address((char*)host_addr,
-						 (char*)host_addr);
-				hp->h_addrtype = AF_INET6;
-				hp->h_length = IN6ADDRSZ;
-			}
-			h_errno = NETDB_SUCCESS;
-			break;
-
-		case SERVICE_HOSTS:
-			hp = _gethtbyaddr(addr, len, af);
-			break;
-
-#ifdef HAVE_NYS
-		case SERVICE_NIS:
-			if (af == AF_INET) {
-				sprintf(qbuf, "%u.%u.%u.%u",
-					(unsigned)addr[0] & 0xff,
-					(unsigned)addr[1] & 0xff,
-					(unsigned)addr[2] & 0xff,
-					(unsigned)addr[3] & 0xff);
-				hp = _getnishost(qbuf, "hosts.byaddr");
-			}
-			break;
-#endif
-
-		default:
-			break;
-		}
-		if (hp) {
-			_res_hconf_trim_domains(hp);
-			return hp;
+	switch (af) {
+	case AF_INET:
+		(void) sprintf(qbuf, "%u.%u.%u.%u.in-addr.arpa",
+			       (uaddr[3] & 0xff),
+			       (uaddr[2] & 0xff),
+			       (uaddr[1] & 0xff),
+			       (uaddr[0] & 0xff));
+		break;
+	case AF_INET6:
+		qp = qbuf;
+		for (n = IN6ADDRSZ - 1; n >= 0; n--) {
+			qp += SPRINTF((qp, "%x.%x.",
+				       uaddr[n] & 0xf,
+				       (uaddr[n] >> 4) & 0xf));
 		}
+		strcpy(qp, "ip6.int");
+		break;
+	default:
+		abort();
+	}
+	n = res_query(qbuf, C_IN, T_PTR, (u_char *)buf.buf, sizeof buf.buf);
+	if (n < 0) {
+		dprintf("res_query failed (%d)\n", n);
+		if (errno == ECONNREFUSED)
+			return (_gethtbyaddr(addr, len, af));
+		return (NULL);
 	}
-	if (h_errno == NETDB_SUCCESS)
+	if (!(hp = getanswer(&buf, n, qbuf, T_PTR)))
+		return (NULL);	/* h_errno was set by getanswer() */
+#ifdef SUNSECURITY
+	if (af == AF_INET) {
+	    /*
+	     * turn off search as the name should be absolute,
+	     * 'localhost' should be matched by defnames
+	     */
+	    strncpy(hname2, hp->h_name, MAXDNAME);
+	    hname2[MAXDNAME] = '\0';
+	    old_options = _res.options;
+	    _res.options &= ~RES_DNSRCH;
+	    _res.options |= RES_DEFNAMES;
+	    if (!(rhp = gethostbyname(hname2))) {
+		syslog(LOG_NOTICE|LOG_AUTH,
+		       "gethostbyaddr: No A record for %s (verifying [%s])",
+		       hname2, inet_ntoa(*((struct in_addr *)addr)));
+		_res.options = old_options;
+		h_errno = HOST_NOT_FOUND;
+		return (NULL);
+	    }
+	    _res.options = old_options;
+	    for (haddr = rhp->h_addr_list; *haddr; haddr++)
+		if (!memcmp(*haddr, addr, INADDRSZ))
+			break;
+	    if (!*haddr) {
+		syslog(LOG_NOTICE|LOG_AUTH,
+		       "gethostbyaddr: A record of %s != PTR record [%s]",
+		       hname2, inet_ntoa(*((struct in_addr *)addr)));
 		h_errno = HOST_NOT_FOUND;
-	return NULL;
+		return (NULL);
+	    }
+	}
+#endif /*SUNSECURITY*/
+	hp->h_addrtype = af;
+	hp->h_length = len;
+	bcopy(addr, host_addr, len);
+	h_addr_ptrs[0] = (char *)host_addr;
+	h_addr_ptrs[1] = NULL;
+	if (af == AF_INET && (_res.options & RES_USE_INET6)) {
+		map_v4v6_address((char*)host_addr, (char*)host_addr);
+		hp->h_addrtype = AF_INET6;
+		hp->h_length = IN6ADDRSZ;
+	}
+	h_errno = NETDB_SUCCESS;
+	return (hp);
 }
 
 void
@@ -824,44 +727,6 @@ _gethtent()
 	return (&host);
 }
 
-struct hstorage {
-	char	*name;				/* canonical name */
-	char **	alp;				/* address list pointer */
-	char *	abp;				/* address buffer pointer */
-	char *	addr_list[MAXADDRS + 1];	/* address list storage */
-	char	addr_buf[MAXADDRBUFSIZE];	/* addresses storage */
-};
-
-static void
-append_addr (struct hstorage * hs, struct hostent *p)
-{
-	if (hs->alp < hs->addr_list + MAXADDRS
-	    && hs->abp + p->h_length < hs->addr_buf + MAXADDRBUFSIZE)
-	{
-		hs->alp[0] = hs->abp;
-		hs->alp[1] = 0;
-		memcpy(hs->abp, p->h_addr_list[0], p->h_length);
-		hs->abp += p->h_length;
-		++hs->alp;
-	}
-}
-
-/*
- * Lookup IP address and aliases for host NAME.  If multiaddress mode
- * is enabled, the entire /etc/hosts file is searched and the union of
- * all addresses found for NAME is returned (this may be slow with
- * large /etc/hosts files, but is convenient for smallish sites that
- * don't want to go through the complexity of running named locally).
- * If multiaddress mode is enabled, the address returned in
- * h_addr_list[0] is one that is on the same net as one of the host's
- * local addresses (if such an address exists).  For compatibility
- * with the BIND version of gethostbyname(), the alias field is empty
- * unless the name being looked up is an alias itself.  In the latter
- * case, the name field contains the canonical name and the alias
- * field the name that is being looked up.  A difference from the BIND
- * version is that this is true even if the alias applies only to one
- * of the interfaces on the target host.o
- */
 struct hostent *
 _gethtbyname(name)
 	const char *name;
@@ -886,163 +751,14 @@ _gethtbyname2(name, af)
 	register char **cp;
 
 	_sethtent(0);
-
-	if (_res_hconf.flags & HCONF_FLAG_MULTI) {
-		/*
-		 * More statics; not pretty, but it would require
-		 * interface changes to make these functions
-		 * reentrant.
-		 */
-		static char *aliases[2] = {0};
-		static struct hstorage self = {0}, target = {0};
-		static size_t self_name_size = 0; /* Allocated in self.name. */
-		static struct hostent ht;
-		int found;
-
-		if (aliases[0])
-			free (aliases[0]);	/* Malloced in a prev call.  */
-		aliases[0] = aliases[1] = 0;
-
-		/* Get current host name in a large enough buffer.  */
-		do {
-			   errno = 0;
-
-			   if (self.name)
-			   {
-				   self_name_size += self_name_size;
-				   self.name =
-					   realloc (self.name, self_name_size);
-			   } else {
-				   self_name_size = 128; /* Initial guess */
-				   self.name = malloc (self_name_size);
-			   }
-
-			   if (! self.name)
-			   {
-				   errno = ENOMEM;
-				   return 0;
-			   }
-		   } while ((gethostname(self.name, self_name_size) == 0
-			     && !memchr (self.name, '\0', self_name_size))
-			    || errno == ENAMETOOLONG);
-		
-		if (errno)
-			/* gethostname failed, abort.  */
-		{
-			free (self.name);
-			self.name = 0;
-		}
-
-		self.alp = self.addr_list;
-		self.abp = self.addr_buf;
-
-		if (target.name)
-			free (target.name);
-		target.name = strdup (name);
-
-		target.alp = target.addr_list;
-		target.abp = target.addr_buf;
-
-		_sethtent(0);
-		while ((p = _gethtent()) != 0) {
-			found = 1;
-
-			if (p->h_addrtype != af)
-				continue;
-			if (strcasecmp(p->h_name, name) != 0) {
-				found = 0;
-				for (cp = p->h_aliases; *cp; ++cp)
-					if (strcasecmp(*cp, name) == 0) {
-						found = 1;
-						if (!aliases[0]) {
-							aliases[0] =
-							  target.name;
-							target.name =
-							  strdup (p->h_name);
-						}
-						break;
-					}
-			}
-			if (found) {
-				/* they better be all the same type and length! */
-				ht.h_addrtype = p->h_addrtype;
-				ht.h_length = p->h_length;
-				append_addr(&target, p);
-				/*
-				 * If the current hostentry is for the target host, we don't
-				 * check for the local host name.  This nicely optimizes the
-				 * case where NAME is a local name since address ordering
-				 * doesn't matter in that case.
-				 */
-				continue;
-			}
-			found = 1;
-			if (strcasecmp(p->h_name, self.name) != 0) {
-				found = 0;
-				for (cp = p->h_aliases; *cp; ++cp)
-					if (strcasecmp(*cp, self.name) == 0) {
-						found = 1;
-						break;
-					}
-			}
-			if (found) {
-				append_addr(&self, p);
-			}
-		}
-		_endhtent();
-
-		if (target.alp == target.addr_list)
-			return NULL;		/* found nothing */
-
-		ht.h_aliases   = aliases;
-		ht.h_name      = target.name;
-		ht.h_addr_list = target.addr_list;
-		/*
-		 * XXX (davidm) Isn't this subsumed by REORDER???
-		 *
-		 * Finding the `best' address is necessarily address
-		 * specific.  For now, we do IPv4 addresses only.
-		 */
-		if (af == AF_INET) {
-			u_int32_t a1, a2, diff, mindiff = ~0;
-			int i, j, bestaddr = 0;
-
-			for (i = 0; self.addr_list[i]; ++i) {
-				for (j = 0; target.addr_list[j]; ++j) {
-					memcpy(&a1, self.addr_list[i], 4);
-					memcpy(&a2, target.addr_list[j], 4);
-					a1 = ntohl(a1);
-					a2 = ntohl(a2);
-					diff = a1 ^ a2;
-					if (diff < mindiff) {
-						bestaddr = j;
-						mindiff = diff;
-					}
-				}
-			}
-			if (bestaddr > 0) {
-				char * tmp;
-
-				tmp = target.addr_list[0];
-				target.addr_list[0] = target.addr_list[bestaddr];
-				target.addr_list[bestaddr] = tmp;
-			}
-		} else if (af == AF_INET6) {
-			/* XXX To do!!! */
-		}
-		ht.h_addr_list = target.addr_list;
-		return &ht;
-	} else {
-		_sethtent(0);
-		while (p = _gethtent()) {
-			if (p->h_addrtype != af)
-				continue;
-			if (strcasecmp(p->h_name, name) == 0)
-				break;
-			for (cp = p->h_aliases; *cp != 0; cp++)
-				if (strcasecmp(*cp, name) == 0)
-					goto found;
-		}
+	while (p = _gethtent()) {
+		if (p->h_addrtype != af)
+			continue;
+		if (strcasecmp(p->h_name, name) == 0)
+			break;
+		for (cp = p->h_aliases; *cp != 0; cp++)
+			if (strcasecmp(*cp, name) == 0)
+				goto found;
 	}
  found:
 	_endhtent();
@@ -1191,47 +907,7 @@ ht_gethostbyaddr(addr, len, af)
 struct hostent *
 gethostent()
 {
-	struct hostent * hp;
-	int i;
-
-	if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
-		h_errno = NETDB_INTERNAL;
-		return (NULL);
-	}
-
-	/*
-	 * This doesn't look quite right.  Shouldn't we read one
-	 * service until it returns 0, then move on to the next
-	 * service?  If so, it requires adding some state and
-	 * initializing that state in sethostent().
-	 * (davidm@azstarnet.com)
-	 */
-	for (i = 0; i < _res_hconf.num_services; ++i) {
-		hp = NULL;
-		switch (_res_hconf.service[i]) {
-		      case SERVICE_HOSTS:
-			hp = _gethtent ();
-			break;
-
-#ifdef HAVE_NYS
-		      case SERVICE_NIS:
-			hp = _getnishost (NULL, "hosts.byname");
-			break;
-#endif
-
-		      case SERVICE_BIND:
-		      default:
-			break;
-		}
-		if (hp) {
-			if ((_res_hconf.flags & HCONF_FLAG_REORDER)
-			    && hp->h_addr_list[0] && hp->h_addr_list[1])
-				_res_hconf_reorder_addrs (hp);
-			return hp;
-		}
-	}
-	h_errno = HOST_NOT_FOUND;
-	return NULL;
+	return (_gethtent());
 }
 
 void
diff --git a/resolv/getnetbyaddr.c b/resolv/getnetbyaddr.c
deleted file mode 100644
index 32513cc387..0000000000
--- a/resolv/getnetbyaddr.c
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (c) 1983 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)getnetbyaddr.c	1.1 (Coimbra) 93/06/02";
-static char rcsid[] = "$Id$";
-#endif /* LIBC_SCCS and not lint */
-
-#include <netdb.h>
-
-extern int _net_stayopen;
-
-struct netent *
-_getnetbyaddr(net, type)
-	register unsigned long net;
-	register int type;
-{
-	register struct netent *p;
-
-	setnetent(_net_stayopen);
-	while (p = getnetent())
-		if (p->n_addrtype == type && p->n_net == net)
-			break;
-	if (!_net_stayopen)
-		endnetent();
-	return (p);
-}
diff --git a/resolv/getnetbyname.c b/resolv/getnetbyname.c
deleted file mode 100644
index cc3f281c5d..0000000000
--- a/resolv/getnetbyname.c
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Copyright (c) 1983, 1993
- *	The Regents of the University of California.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)getnetbyname.c	8.1 (Berkeley) 6/4/93";
-static char sccsid_[] = "from getnetbyname.c	1.1 (Coimbra) 93/06/02";
-static char rcsid[] = "$Id$";
-#endif /* LIBC_SCCS and not lint */
-
-#include <netdb.h>
-#include <string.h>
-
-extern int _net_stayopen;
-
-struct netent *
-_getnetbyname(name)
-	register const char *name;
-{
-	register struct netent *p;
-	register char **cp;
-
-	setnetent(_net_stayopen);
-	while (p = getnetent()) {
-		if (strcasecmp(p->n_name, name) == 0)
-			break;
-		for (cp = p->n_aliases; *cp != 0; cp++)
-			if (strcasecmp(*cp, name) == 0)
-				goto found;
-	}
-found:
-	if (!_net_stayopen)
-		endnetent();
-	return (p);
-}
diff --git a/resolv/getnetent.c b/resolv/getnetent.c
deleted file mode 100644
index 7ec5607781..0000000000
--- a/resolv/getnetent.c
+++ /dev/null
@@ -1,162 +0,0 @@
-/*
- * Copyright (c) 1983 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-/* Portions Copyright (c) 1993 Carlos Leandro and Rui Salgueiro
- *	Dep. Matematica Universidade de Coimbra, Portugal, Europe
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * from getnetent.c	1.1 (Coimbra) 93/06/02
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)getnetent.c	8.1 (Berkeley) 6/4/93";
-static char rcsid[] = "$Id$";
-#endif /* LIBC_SCCS and not lint */
-
-#include <sys/param.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <arpa/nameser.h>
-
-#include <stdio.h>
-#include <resolv.h>
-#include <netdb.h>
-#include <string.h>
-
-#ifndef _PATH_NETWORKS 
-#define _PATH_NETWORKS  "/etc/networks"
-#endif
-
-#define	MAXALIASES	35
-
-static FILE *netf;
-static char line[BUFSIZ+1];
-static struct netent net;
-static char *net_aliases[MAXALIASES];
-int _net_stayopen;
-
-void _setnetent __P((int));
-void _endnetent __P((void));
-
-void
-setnetent(stayopen)
-	int stayopen;
-{
-
-	sethostent(stayopen);
-	_setnetent(stayopen);
-}
-
-void
-endnetent()
-{
-
-	endhostent();
-	_endnetent();
-}
-
-void
-_setnetent(f)
-	int f;
-{
-
-	if (netf == NULL)
-		netf = fopen(_PATH_NETWORKS, "r" );
-	else
-		rewind(netf);
-	_net_stayopen |= f;
-}
-
-void
-_endnetent()
-{
-
-	if (netf) {
-		fclose(netf);
-		netf = NULL;
-	}
-	_net_stayopen = 0;
-}
-
-struct netent *
-getnetent()
-{
-	char *p;
-	register char *cp, **q;
-
-	if (netf == NULL && (netf = fopen(_PATH_NETWORKS, "r" )) == NULL)
-		return (NULL);
-again:
-	p = fgets(line, BUFSIZ, netf);
-	if (p == NULL)
-		return (NULL);
-	if (*p == '#')
-		goto again;
-	cp = strpbrk(p, "#\n");
-	if (cp == NULL)
-		goto again;
-	*cp = '\0';
-	net.n_name = p;
-	cp = strpbrk(p, " \t");
-	if (cp == NULL)
-		goto again;
-	*cp++ = '\0';
-	while (*cp == ' ' || *cp == '\t')
-		cp++;
-	p = strpbrk(cp, " \t");
-	if (p != NULL)
-		*p++ = '\0';
-	net.n_net = inet_network(cp);
-	net.n_addrtype = AF_INET;
-	q = net.n_aliases = net_aliases;
-	if (p != NULL) {
-		cp = p;
-		while (cp && *cp) {
-			if (*cp == ' ' || *cp == '\t') {
-				cp++;
-				continue;
-			}
-			if (q < &net_aliases[MAXALIASES - 1])
-				*q++ = cp;
-			cp = strpbrk(cp, " \t");
-			if (cp != NULL)
-				*cp++ = '\0';
-		}
-	}
-	*q = NULL;
-	return (&net);
-}
diff --git a/resolv/inet_pton.c b/resolv/inet_pton.c
index cfc069d891..d0d45ae3da 100644
--- a/resolv/inet_pton.c
+++ b/resolv/inet_pton.c
@@ -59,7 +59,7 @@ inet_pton(af, src, dst)
 	case AF_INET6:
 		return (inet_pton6(src, dst));
 	default:
-		errno = EINVAL;
+		errno = EAFNOSUPPORT;
 		return (-1);
 	}
 	/* NOTREACHED */
diff --git a/resolv/mapv4v6addr.h b/resolv/mapv4v6addr.h
new file mode 100644
index 0000000000..4295398f45
--- /dev/null
+++ b/resolv/mapv4v6addr.h
@@ -0,0 +1,75 @@
+/*
+ * ++Copyright++ 1985, 1988, 1993
+ * -
+ * Copyright (c) 1985, 1988, 1993
+ *    The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by the University of
+ *      California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * -
+ * Portions Copyright (c) 1993 by Digital Equipment Corporation.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies, and that
+ * the name of Digital Equipment Corporation not be used in advertising or
+ * publicity pertaining to distribution of the document or software without
+ * specific, written prior permission.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
+ * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ * -
+ * --Copyright--
+ */
+
+#include <string.h>
+#include <arpa/nameser.h>
+
+static void
+map_v4v6_address (const char *src, char *dst)
+{
+  u_char *p = (u_char *) dst;
+  char tmp[INADDRSZ];
+  int i;
+
+  /* Stash a temporary copy so our caller can update in place. */
+  bcopy (src, tmp, INADDRSZ);
+  /* Mark this ipv6 addr as a mapped ipv4. */
+  for (i = 0; i < 10; i++)
+    *p++ = 0x00;
+  *p++ = 0xff;
+  *p++ = 0xff;
+  /* Retrieve the saved copy and we're done. */
+  bcopy (tmp, (void *) p, INADDRSZ);
+}
diff --git a/resolv/mapv4v6hostent.h b/resolv/mapv4v6hostent.h
new file mode 100644
index 0000000000..c3fb8b5c11
--- /dev/null
+++ b/resolv/mapv4v6hostent.h
@@ -0,0 +1,90 @@
+/*
+ * ++Copyright++ 1985, 1988, 1993
+ * -
+ * Copyright (c) 1985, 1988, 1993
+ *    The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by the University of
+ *      California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * -
+ * Portions Copyright (c) 1993 by Digital Equipment Corporation.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies, and that
+ * the name of Digital Equipment Corporation not be used in advertising or
+ * publicity pertaining to distribution of the document or software without
+ * specific, written prior permission.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
+ * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ * -
+ * --Copyright--
+ */
+
+#include <arpa/nameser.h>
+#include <sys/socket.h>
+
+typedef union {
+    int32_t al;
+    char ac;
+} align;
+
+static void
+map_v4v6_hostent (struct hostent *hp, char **bpp, int *lenp)
+{
+  char **ap;
+
+  if (hp->h_addrtype != AF_INET || hp->h_length != INADDRSZ)
+    return;
+  hp->h_addrtype = AF_INET6;
+  hp->h_length = IN6ADDRSZ;
+  for (ap = hp->h_addr_list; *ap; ap++)
+    {
+      int i = sizeof (align) - ((u_long) *bpp % sizeof (align));
+
+      if (*lenp < (i + IN6ADDRSZ))
+	{
+	  /* Out of memory.  Truncate address list here.  XXX */
+	  *ap = NULL;
+	  return;
+	}
+      *bpp += i;
+      *lenp -= i;
+      map_v4v6_address (*ap, *bpp);
+      *ap = *bpp;
+      *bpp += IN6ADDRSZ;
+      *lenp -= IN6ADDRSZ;
+    }
+}
diff --git a/resolv/netdb.h b/resolv/netdb.h
index fd06e17bb4..38367e324f 100644
--- a/resolv/netdb.h
+++ b/resolv/netdb.h
@@ -67,11 +67,12 @@
 #endif
 #include <sys/cdefs.h>
 
-#define	_PATH_HEQUIV	"/etc/hosts.equiv"
-#define	_PATH_HOSTS	"/etc/hosts"
-#define	_PATH_NETWORKS	"/etc/networks"
-#define	_PATH_PROTOCOLS	"/etc/protocols"
-#define	_PATH_SERVICES	"/etc/services"
+#define	_PATH_HEQUIV		"/etc/hosts.equiv"
+#define	_PATH_HOSTS		"/etc/hosts"
+#define	_PATH_NETWORKS		"/etc/networks"
+#define	_PATH_NSSWITCH_CONF	"/etc/nsswitch.conf"
+#define	_PATH_PROTOCOLS		"/etc/protocols"
+#define	_PATH_SERVICES		"/etc/services"
 
 extern int h_errno;
 
diff --git a/resolv/res_init.c b/resolv/res_init.c
index 4e8af680c1..305dabfcaf 100644
--- a/resolv/res_init.c
+++ b/resolv/res_init.c
@@ -76,8 +76,6 @@ static char rcsid[] = "$Id$";
 # include "../conf/portability.h"
 #endif
 
-#include "res_hconf.h"
-
 /*-------------------------------------- info about "sortlist" --------------
  * Marc Majka		1994/04/16
  * Allan Nathanson	1994/10/29 (BIND 4.9.3.x)
@@ -421,8 +419,6 @@ res_init()
 	if ((cp = getenv("RES_OPTIONS")) != NULL)
 		res_setoptions(cp, "env");
 	_res.options |= RES_INIT;
-
-	_res_hconf_init ();
 	return (0);
 }
 
diff --git a/resolv/sethostent.c b/resolv/sethostent.c
deleted file mode 100644
index e7a59dd75a..0000000000
--- a/resolv/sethostent.c
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright (c) 1985, 1993
- *	The Regents of the University of California.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)sethostent.c	8.1 (Berkeley) 6/4/93";
-static char rcsid[] = "$Id$";
-#endif /* LIBC_SCCS and not lint */
-
-#include <sys/param.h>
-#include <netinet/in.h>
-#include <arpa/nameser.h>
-#include <netdb.h>
-#include <resolv.h>
-
-void _res_close __P((void));
-
-void
-sethostent(stayopen)
-	int stayopen;
-{
-	if ((_res.options & RES_INIT) == 0 && res_init() == -1)
-		return;
-	if (stayopen)
-		_res.options |= RES_STAYOPEN | RES_USEVC;
-}
-
-void
-endhostent()
-{
-	_res.options &= ~(RES_STAYOPEN | RES_USEVC);
-	_res_close();
-}