check for the existance of if_nametoindex().

developer: jinmei
reviewer: marka

configure

 #! /bin/sh
-# From configure.in Revision: 1.332 .
+# From configure.in Revision: 1.333 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.53.
 #
@@ -13206,6 +13206,156 @@ _ACEOF
 		;;
 esac
 
+#
+# Check for if_nametoindex() for IPv6 scoped addresses support
+#
+echo "$as_me:$LINENO: checking for if_nametoindex" >&5
+echo $ECHO_N "checking for if_nametoindex... $ECHO_C" >&6
+if test "${ac_cv_func_if_nametoindex+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+#include "confdefs.h"
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char if_nametoindex (); below.  */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char if_nametoindex ();
+char (*f) ();
+
+#ifdef F77_DUMMY_MAIN
+#  ifdef __cplusplus
+     extern "C"
+#  endif
+   int F77_DUMMY_MAIN() { return 1; }
+#endif
+int
+main ()
+{
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_if_nametoindex) || defined (__stub___if_nametoindex)
+choke me
+#else
+f = if_nametoindex;
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_if_nametoindex=yes
+else
+  echo "$as_me: failed program was:" >&5
+cat conftest.$ac_ext >&5
+ac_cv_func_if_nametoindex=no
+fi
+rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_if_nametoindex" >&5
+echo "${ECHO_T}$ac_cv_func_if_nametoindex" >&6
+if test $ac_cv_func_if_nametoindex = yes; then
+  ac_cv_have_if_nametoindex=yes
+else
+  ac_cv_have_if_nametoindex=no
+fi
+
+case $ac_cv_have_if_nametoindex in
+no)
+	case "$host" in
+  	*-hp-hpux*)
+  		echo "$as_me:$LINENO: checking for if_nametoindex in -lipv6" >&5
+echo $ECHO_N "checking for if_nametoindex in -lipv6... $ECHO_C" >&6
+if test "${ac_cv_lib_ipv6_if_nametoindex+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lipv6  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+#include "confdefs.h"
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char if_nametoindex ();
+#ifdef F77_DUMMY_MAIN
+#  ifdef __cplusplus
+     extern "C"
+#  endif
+   int F77_DUMMY_MAIN() { return 1; }
+#endif
+int
+main ()
+{
+if_nametoindex ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_ipv6_if_nametoindex=yes
+else
+  echo "$as_me: failed program was:" >&5
+cat conftest.$ac_ext >&5
+ac_cv_lib_ipv6_if_nametoindex=no
+fi
+rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_ipv6_if_nametoindex" >&5
+echo "${ECHO_T}$ac_cv_lib_ipv6_if_nametoindex" >&6
+if test $ac_cv_lib_ipv6_if_nametoindex = yes; then
+  ac_cv_have_if_nametoindex=yes
+				LIBS="-lipv6 $LIBS"
+fi
+
+  	;;
+	esac
+esac
+case $ac_cv_have_if_nametoindex in
+yes)
+	ISC_PLATFORM_HAVEIFNAMETOINDEX="#define ISC_PLATFORM_HAVEIFNAMETOINDEX 1"
+	;;
+*)
+	ISC_PLATFORM_HAVEIFNAMETOINDEX="#undef ISC_PLATFORM_HAVEIFNAMETOINDEX"
+	;;
+esac
+
+
 #
 # The following sections deal with tools used for formatting
 # the documentation.  They are all optional, unless you are
@@ -14360,6 +14510,7 @@ s,@ISC_PLATFORM_RLIMITTYPE@,$ISC_PLATFORM_RLIMITTYPE,;t t
 s,@ISC_PLATFORM_USEDECLSPEC@,$ISC_PLATFORM_USEDECLSPEC,;t t
 s,@LWRES_PLATFORM_USEDECLSPEC@,$LWRES_PLATFORM_USEDECLSPEC,;t t
 s,@ISC_PLATFORM_BRACEPTHREADONCEINIT@,$ISC_PLATFORM_BRACEPTHREADONCEINIT,;t t
+s,@ISC_PLATFORM_HAVEIFNAMETOINDEX@,$ISC_PLATFORM_HAVEIFNAMETOINDEX,;t t
 s,@OPENJADE@,$OPENJADE,;t t
 s,@JADETEX@,$JADETEX,;t t
 s,@PDFJADETEX@,$PDFJADETEX,;t t

configure.in

@@ -18,7 +18,7 @@ AC_DIVERT_PUSH(AC_DIVERSION_NOTICE)dnl
 esyscmd([sed "s/^/# /" COPYRIGHT])dnl
 AC_DIVERT_POP()dnl
 
-AC_REVISION($Revision: 1.332 $)
+AC_REVISION($Revision: 1.333 $)
 
 AC_INIT(lib/dns/name.c)
 AC_PREREQ(2.13)
@@ -1690,6 +1690,31 @@ case "$hack_shutup_stdargcast" in
 		;;
 esac
 
+#
+# Check for if_nametoindex() for IPv6 scoped addresses support
+#
+AC_CHECK_FUNC(if_nametoindex, ac_cv_have_if_nametoindex=yes,
+		ac_cv_have_if_nametoindex=no)
+case $ac_cv_have_if_nametoindex in
+no)
+	case "$host" in
+  	*-hp-hpux*)
+  		AC_CHECK_LIB(ipv6, if_nametoindex,
+				ac_cv_have_if_nametoindex=yes
+				LIBS="-lipv6 $LIBS",)
+  	;;
+	esac
+esac
+case $ac_cv_have_if_nametoindex in
+yes)
+	ISC_PLATFORM_HAVEIFNAMETOINDEX="#define ISC_PLATFORM_HAVEIFNAMETOINDEX 1"
+	;;
+*)
+	ISC_PLATFORM_HAVEIFNAMETOINDEX="#undef ISC_PLATFORM_HAVEIFNAMETOINDEX"
+	;;
+esac
+AC_SUBST(ISC_PLATFORM_HAVEIFNAMETOINDEX)
+
 #
 # The following sections deal with tools used for formatting
 # the documentation.  They are all optional, unless you are

lib/isc/include/isc/platform.h.in

@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: platform.h.in,v 1.29 2002/10/24 03:52:34 marka Exp $ */
+/* $Id: platform.h.in,v 1.30 2002/11/26 03:50:07 marka Exp $ */
 
 #ifndef ISC_PLATFORM_H
 #define ISC_PLATFORM_H 1
@@ -180,6 +180,11 @@
  */
 @ISC_PLATFORM_USEDECLSPEC@
 
+/*
+ * Define if the system supports if_nametoindex.
+ */
+@ISC_PLATFORM_HAVEIFNAMETOINDEX@
+
 #ifndef ISC_PLATFORM_USEDECLSPEC
 #define LIBISC_EXTERNAL_DATA
 #define LIBDNS_EXTERNAL_DATA

lib/isc/netscope.c

@@ -17,7 +17,7 @@
 
 #if defined(LIBC_SCCS) && !defined(lint)
 static char rcsid[] =
-	"$Id: netscope.c,v 1.3 2002/10/28 02:23:53 marka Exp $";
+	"$Id: netscope.c,v 1.4 2002/11/26 03:50:07 marka Exp $";
 #endif /* LIBC_SCCS and not lint */
 
 #include <isc/string.h>
@@ -47,10 +47,12 @@ isc_netscope_pton(int af, char *scopename, char *addr, isc_uint32_t *zoneid) {
 	 * interface names as link names, assuming one to one mapping between
 	 * interfaces and links.
 	 */
+#ifdef ISC_PLATFORM_HAVEIFNAMETOINDEX
 	if (IN6_IS_ADDR_LINKLOCAL(in6) &&
 	    (ifid = if_nametoindex((const char *)scopename)) != 0)
 		zone = (isc_uint32_t)ifid;
 	else {
+#endif
 		llz = isc_string_touint64(scopename, &ep, 10);
 		if (ep == scopename)
 			return (ISC_R_FAILURE);
@@ -59,7 +61,9 @@ isc_netscope_pton(int af, char *scopename, char *addr, isc_uint32_t *zoneid) {
 		zone = (isc_uint32_t)(llz & 0xffffffffUL);
 		if (zone != llz)
 			return (ISC_R_FAILURE);
+#ifdef ISC_PLATFORM_HAVEIFNAMETOINDEX
 	}
+#endif
 
 	*zoneid = zone;
 	return (ISC_R_SUCCESS);