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.

ChangeLog

@@ -1,8 +1,29 @@
+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. 
+
 Thu Aug 17 16:18:38 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
 
 	* sysdeps/mach/hurd/Makefile: Don't elide sunrpc and manual from
  	`subdirs' variable.
 
+	* sysdeps/mach/hurd/i386/intr-msg.h: New file.
 	* hurd/intr-msg.c: Use INTR_MSG_TRAP macro from machine-dependent
  	"intr-msg.h" for special syscall code, instead of i386-specific asm.
 	* hurd/hurdsig.c: Use INTR_MSG_BACK_OUT macro from

NEWS

@@ -75,7 +75,7 @@ Version 1.10
 * The new header file <fts.h> and suite of functions simplify programs that
   operate on directory trees.  This code comes from 4.4 BSD.
 
-* The resolver code has been updated from the BIND-4.9.3-BETA24 release.
+* The resolver code has been updated from the BIND-4.9.3-BETA26 release.
 
 * The new function `malloc_find_object_address' finds the starting address
   of a malloc'd block, given any address within the block.  This can be

hurd/thread-cancel.c

@@ -62,6 +62,12 @@ hurd_thread_cancel (thread_t thread)
 				  (natural_t *) &state.basic,
 				  MACHINE_THREAD_STATE_COUNT);
 
+      if (ss->cancel_hook)
+	/* The code being cancelled has a special wakeup function.
+	   Calling this should make the thread wake up and check the
+	   cancellation flag.  */
+	(*ss->cancel_hook) ();
+
       __thread_resume (thread);
     }
 

inet/Makefile

@@ -21,7 +21,7 @@
 #
 subdir	:= inet
 
-headers	:= netinet/in.h $(wildcard arpa/*.h protocols/*.h) netdb.h
+headers	:= netinet/in.h $(wildcard arpa/*.h protocols/*.h)
 
 routines := ntohl ntohs htonl htons		\
 	    inet_lnaof inet_mkadr	\

netdb.h

@@ -1 +1 @@
-#include <inet/netdb.h>
+#include <resolv/netdb.h>

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 \

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. */
+			syslog(LOG_NOTICE|LOG_AUTH,
-			if (!(qtype == T_PTR && type == T_CNAME))
-				syslog(LOG_NOTICE|LOG_AUTH,
 	       "gethostby*.getanswer: asked for \"%s %s %s\", got type \"%s\"",
-				       qname, p_class(qclass), p_type(qtype),
+			       qname, p_class(qclass), p_type(qtype),
-				       p_type(type));
+			       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;
@@ -376,6 +396,36 @@ getanswer(answer, anslen, qname, qclass, qtype)
 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;
@@ -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

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*/

resolv/netdb.h

@@ -133,6 +133,7 @@ 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 *));

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;

sysdeps/mach/hurd/i386/intr-msg.h

@@ -0,0 +1,47 @@
+/* Machine-dependent details of interruptible RPC messaging.  i386 version.
+Copyright (C) 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+
+#define INTR_MSG_TRAP(msg, option, send_size, rcv_size, rcv_name, timeout, notify) \
+({									      \
+  error_t err;								      \
+  asm (".globl _hurd_intr_rpc_msg_do_trap\n" 				      \
+       ".globl _hurd_intr_rpc_msg_in_trap\n"				      \
+       ".globl _hurd_intr_rpc_msg_cx_sp\n"				      \
+       ".globl _hurd_intr_rpc_msg_sp_restored\n"			      \
+       "				movl %%esp, %%ecx\n"		      \
+       "				leal %1, %%esp\n"		      \
+       "_hurd_intr_rpc_msg_cx_sp:	movl $-25, %%eax\n"		      \
+       "_hurd_intr_rpc_msg_do_trap:	lcall $7, $0 # status in %0\n"	      \
+       "_hurd_intr_rpc_msg_in_trap:	movl %%ecx, %%esp\n"		      \
+       "_hurd_intr_rpc_msg_sp_restored:"				      \
+       : "=a" (err) : "m" ((&msg)[-1]) : "%ecx");			      \
+  err;									      \
+})
+
+
+static void inline
+INTR_MSG_BACK_OUT (struct i386_thread_state *state)
+{
+  extern const void _hurd_intr_rpc_msg_cx_sp;
+  if (state->eip >= (natural_t) &_hurd_intr_rpc_msg_cx_sp)
+    state->uesp = state->ecx;
+  else
+    state->ecx = state->uesp;
+}