Tue Aug 22 16:49:12 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>

	* inet/netdb.h: Moved to resolv.
	* inet/Makefile (headers): Remove netdb.h.
	* resolv/Makefile (headers): Add netdb.h.
	* resolv/gethnamaddr.c, resolv/inet_addr.c, resolv/netdb.h,
	resolv/res_send.c: Updated from BIND-4.9.3-BETA26.

	* hurd/thread-cancel.c: If SS->cancel_hook is not null, call it before
	resuming the thread.
	* hurd/hurd/signal.h (struct hurd_sigstate): New member `cancel_hook'.

	* hurd/Makefile: Removed dep on hurd/signal.h for RPC stub objects.

Mon Aug 21 16:37:09 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>

	* sysdeps/i386/dl-machine.h (elf_machine_rel): Grok R_386_NONE
	relocs, and do nothing.  Why the linker generates them we may
	never know. 

	* sysdeps/mach/hurd/i386/intr-msg.h: New file.

5 files changed, 242 insertions, 43 deletions

diff --git a/resolv/Makefile b/resolv/Makefile
index e07cfb0b15..f1a8701017 100644
--- a/resolv/Makefile
+++ b/resolv/Makefile
@@ -21,7 +21,7 @@
 #
 subdir	:= resolv
 
-headers	:= resolv.h arpa/nameser.h sys/bitypes.h
+headers	:= resolv.h netdb.h arpa/nameser.h sys/bitypes.h
 distribute := ../conf/portability.h
 
 routines := gethnamaddr getnetbyaddr getnetbyname getnetent getnetnamadr \
diff --git a/resolv/gethnamaddr.c b/resolv/gethnamaddr.c
index d3b68f7d95..87b4db1a6f 100644
--- a/resolv/gethnamaddr.c
+++ b/resolv/gethnamaddr.c
@@ -93,6 +93,7 @@ static const char AskedForGot[] =
 			  "gethostby*.getanswer: asked for \"%s\", got \"%s\"";
 
 static char *h_addr_ptrs[MAXADDRS + 1];
+static struct hostent *gethostbyname_ipv4 __P((const char *));
 
 static struct hostent host;
 static char *host_aliases[MAXALIASES];
@@ -156,7 +157,9 @@ getanswer(answer, anslen, qname, qclass, qtype)
 	int haveanswer, had_error;
 	int toobig = 0;
 	char tbuf[MAXDNAME+1];
+	const char *tname;
 
+	tname = qname;
 	host.h_name = NULL;
 	eom = answer->buf + anslen;
 	/*
@@ -249,19 +252,36 @@ getanswer(answer, anslen, qname, qclass, qtype)
 			buflen -= n;
 			continue;
 		}
+		if (qtype == T_PTR && type == T_CNAME) {
+			n = dn_expand(answer->buf, eom, cp, tbuf, sizeof tbuf);
+			if (n < 0) {
+				had_error++;
+				continue;
+			}
+			cp += n;
+			/* Get canonical name. */
+			n = strlen(tbuf) + 1;	/* for the \0 */
+			if (n > buflen) {
+				had_error++;
+				continue;
+			}
+			strcpy(bp, tbuf);
+			tname = bp;
+			bp += n;
+			buflen -= n;
+			continue;
+		}
 		if (type != qtype) {
-			/* CNAME->PTR should not cause a log message. */
-			if (!(qtype == T_PTR && type == T_CNAME))
-				syslog(LOG_NOTICE|LOG_AUTH,
+			syslog(LOG_NOTICE|LOG_AUTH,
 	       "gethostby*.getanswer: asked for \"%s %s %s\", got type \"%s\"",
-				       qname, p_class(qclass), p_type(qtype),
-				       p_type(type));
+			       qname, p_class(qclass), p_type(qtype),
+			       p_type(type));
 			cp += n;
 			continue;		/* XXX - had_error++ ? */
 		}
 		switch (type) {
 		case T_PTR:
-			if (strcasecmp(qname, bp) != 0) {
+			if (strcasecmp(tname, bp) != 0) {
 				syslog(LOG_NOTICE|LOG_AUTH,
 				       AskedForGot, qname, bp);
 				cp += n;
@@ -377,6 +397,36 @@ struct hostent *
 gethostbyname(name)
 	const char *name;
 {
+	struct hostent *hp;
+
+#if defined(AF_INET6) && defined(RES_TRY_INET6)
+	if (_res.options & RES_TRY_INET6) {
+		hp = gethostbyname2(name, AF_INET6);
+		if (hp)
+			return (hp);
+	}
+#endif
+	return (gethostbyname2(name, AF_INET));
+}
+
+struct hostent *
+gethostbyname2(name, af)
+	const char *name;
+	int af;
+{
+	switch (af) {
+	case AF_INET:
+		return (gethostbyname_ipv4(name));
+	}
+	errno = EAFNOSUPPORT;
+	h_errno = NETDB_INTERNAL;
+	return (NULL);
+}
+
+static struct hostent *
+gethostbyname_ipv4(name)
+	const char *name;
+{
 	querybuf buf;
 	register const char *cp;
 	int n;
@@ -727,23 +777,3 @@ dn_skipname(comp_dn, eom)
 	return (__dn_skipname(comp_dn, eom));
 }
 #endif /*old-style libc with yp junk in it*/
-
-#ifdef ultrix
-/* more icky libc packaging in ultrix */
-int
-local_hostname_length(hostname)
-	const char *hostname;
-{
-	int len_host, len_domain;
-
-	if (!*_res.defdname)
-		res_init();
-	len_host = strlen(hostname);
-	len_domain = strlen(_res.defdname);
-	if (len_host > len_domain &&
-	    !strcasecmp(hostname + len_host - len_domain, _res.defdname) &&
-	    hostname[len_host - len_domain - 1] == '.')
-		return (len_host - len_domain - 1);
-	return (0);
-}
-#endif
diff --git a/resolv/inet_addr.c b/resolv/inet_addr.c
index 2a15067b07..01a38e6a00 100644
--- a/resolv/inet_addr.c
+++ b/resolv/inet_addr.c
@@ -66,10 +66,6 @@ static char rcsid[] = "$Id$";
 
 /* these are compatibility routines, not needed on recent BSD releases */
 
-#ifndef NEED_INETADDR
-int __inet_addr_unneeded__;
-#else
-
 /*
  * Ascii internet address interpretation routine.
  * The value returned is in network order.
@@ -84,11 +80,6 @@ inet_addr(cp)
 		return (val.s_addr);
 	return (INADDR_NONE);
 }
-#endif /*NEED_INETADDR*/
-
-#ifndef NEED_INETATON
-int __inet_aton_unneeded__;
-#else
 
 /* 
  * Check whether "cp" is a valid ascii representation
@@ -113,8 +104,10 @@ inet_aton(cp, addr)
 		/*
 		 * Collect number up to ``.''.
 		 * Values are specified as for C:
-		 * 0x=hex, 0=octal, other=decimal.
+		 * 0x=hex, 0=octal, isdigit=decimal.
 		 */
+		if (!isdigit(c))
+			return (0);
 		val = 0; base = 10;
 		if (c == '0') {
 			c = *++cp;
@@ -123,7 +116,7 @@ inet_aton(cp, addr)
 			else
 				base = 8;
 		}
-		while (c != '\0') {
+		for (;;) {
 			if (isascii(c) && isdigit(c)) {
 				val = (val * base) + (c - '0');
 				c = *++cp;
@@ -141,7 +134,7 @@ inet_aton(cp, addr)
 			 *	a.b.c	(with c treated as 16 bits)
 			 *	a.b	(with b treated as 24 bits)
 			 */
-			if (pp >= parts + 3 || val > 0xff)
+			if (pp >= parts + 3)
 				return (0);
 			*pp++ = val;
 			c = *++cp;
@@ -151,7 +144,7 @@ inet_aton(cp, addr)
 	/*
 	 * Check for trailing characters.
 	 */
-	if (c && (!isascii(c) || (!isspace(c) && !ispunct(c))))
+	if (c != '\0' && (!isascii(c) || !isspace(c)))
 		return (0);
 	/*
 	 * Concoct the address according to
@@ -188,4 +181,3 @@ inet_aton(cp, addr)
 		addr->s_addr = htonl(val);
 	return (1);
 }
-#endif /*NEED_INETATON*/
diff --git a/resolv/netdb.h b/resolv/netdb.h
new file mode 100644
index 0000000000..822b621363
--- /dev/null
+++ b/resolv/netdb.h
@@ -0,0 +1,170 @@
+/*
+ * ++Copyright++ 1980, 1983, 1988, 1993
+ * -
+ * Copyright (c) 1980, 1983, 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--
+ */
+
+/*
+ *      @(#)netdb.h	8.1 (Berkeley) 6/2/93
+ *	$Id$
+ */
+
+#ifndef _NETDB_H_
+#define _NETDB_H_
+
+#include <sys/param.h>
+#if (!defined(BSD)) || (BSD < 199306)
+# include <sys/bitypes.h>
+#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"
+
+extern int h_errno;
+
+/*
+ * Structures returned by network data base library.  All addresses are
+ * supplied in host order, and returned in network order (suitable for
+ * use in system calls).
+ */
+struct	hostent {
+	char	*h_name;	/* official name of host */
+	char	**h_aliases;	/* alias list */
+	int	h_addrtype;	/* host address type */
+	int	h_length;	/* length of address */
+	char	**h_addr_list;	/* list of addresses from name server */
+#define	h_addr	h_addr_list[0]	/* address, for backward compatiblity */
+};
+
+/*
+ * Assumption here is that a network number
+ * fits in an unsigned long -- probably a poor one.
+ */
+struct	netent {
+	char		*n_name;	/* official name of net */
+	char		**n_aliases;	/* alias list */
+	int		n_addrtype;	/* net address type */
+	unsigned long	n_net;		/* network # */
+};
+
+struct	servent {
+	char	*s_name;	/* official service name */
+	char	**s_aliases;	/* alias list */
+	int	s_port;		/* port # */
+	char	*s_proto;	/* protocol to use */
+};
+
+struct	protoent {
+	char	*p_name;	/* official protocol name */
+	char	**p_aliases;	/* alias list */
+	int	p_proto;	/* protocol # */
+};
+
+/*
+ * Error return codes from gethostbyname() and gethostbyaddr()
+ * (left in extern int h_errno).
+ */
+
+#define	NETDB_INTERNAL	-1	/* see errno */
+#define	NETDB_SUCCESS	0	/* no problem */
+#define	HOST_NOT_FOUND	1 /* Authoritative Answer Host not found */
+#define	TRY_AGAIN	2 /* Non-Authoritive Host not found, or SERVERFAIL */
+#define	NO_RECOVERY	3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
+#define	NO_DATA		4 /* Valid name, no data record of requested type */
+#define	NO_ADDRESS	NO_DATA		/* no address, look for MX record */
+
+__BEGIN_DECLS
+void		endhostent __P((void));
+void		endnetent __P((void));
+void		endprotoent __P((void));
+void		endservent __P((void));
+struct hostent	*gethostbyaddr __P((const char *, int, int));
+struct hostent	*gethostbyname __P((const char *));
+struct hostent	*gethostbyname2 __P((const char *, int));
+struct hostent	*gethostent __P((void));
+struct netent	*getnetbyaddr __P((long, int)); /* u_long? */
+struct netent	*getnetbyname __P((const char *));
+struct netent	*getnetent __P((void));
+struct protoent	*getprotobyname __P((const char *));
+struct protoent	*getprotobynumber __P((int));
+struct protoent	*getprotoent __P((void));
+struct servent	*getservbyname __P((const char *, const char *));
+struct servent	*getservbyport __P((int, const char *));
+struct servent	*getservent __P((void));
+void		herror __P((const char *));
+const char	*hstrerror __P((int));
+void		sethostent __P((int));
+/* void		sethostfile __P((const char *)); */
+void		setnetent __P((int));
+void		setprotoent __P((int));
+void		setservent __P((int));
+__END_DECLS
+
+/* This is nec'y to make this include file properly replace the sun version. */
+#ifdef __GNU_LIBRARY__
+#include <rpc/netdb.h>
+#else
+#ifdef sun
+struct rpcent {
+	char	*r_name;	/* name of server for this rpc program */
+	char	**r_aliases;	/* alias list */
+	int	r_number;	/* rpc program number */
+};
+struct rpcent	*getrpcbyname(), *getrpcbynumber(), *getrpcent();
+#endif /* sun */
+#endif /* __GNU_LIBRARY__ */
+
+#endif /* !_NETDB_H_ */
diff --git a/resolv/res_send.c b/resolv/res_send.c
index 4ee52b438b..f8e58f3e11 100644
--- a/resolv/res_send.c
+++ b/resolv/res_send.c
@@ -109,6 +109,13 @@ static int vc = 0;	/* is the socket a virtual ciruit? */
 #define FD_ZERO(p)	bzero((char *)(p), sizeof(*(p)))
 #endif
 
+/* XXX - this should be done in portability.h */
+#if (defined(BSD) && (BSD >= 199103)) || defined(linux)
+# define CAN_RECONNECT 1
+#else
+# define CAN_RECONNECT 0
+#endif
+
 #ifndef DEBUG
 #   define Dprint(cond, args) /*empty*/
 #   define DprintQ(cond, args, query, size) /*empty*/
@@ -484,7 +491,7 @@ res_send(buf, buflen, ans, anssiz)
 					_res_close();
 				s = socket(PF_INET, SOCK_DGRAM, 0);
 				if (s < 0) {
-#if !defined(BSD) || (BSD < 199103)
+#if !CAN_RECONNECT
  bad_dg_sock:
 #endif
 					terrno = errno;
@@ -538,7 +545,7 @@ res_send(buf, buflen, ans, anssiz)
 				 * for responses from more than one server.
 				 */
 				if (connected) {
-#if defined(BSD) && (BSD >= 199103)
+#if CAN_RECONNECT
 					struct sockaddr_in no_addr;
 
 					no_addr.sin_family = AF_INET;