Update the resolver in libc to BIND9's one.

Since, res_sendsigned(3) and the friends use MD5 functions, it is
hard to include them without having MD5 functions in libc.  So,
res_sendsigned(3) is not merged into libc.

Since, res_update(3) in BIND9 is not binary compatible with our
res_update(3), res_update(3) is leaved as is, except some
necessary modifications.
The res_update(3) and the friends are not essential part of the
resolver.  They are not defined in resolv.h but defined in
res_update.h separately in BIND9.  Further, they are not called from
our tree.  So, I hide them from our resolv.h, but leave them only
for binary backward compatibility (perhaps, no one calls them).

Since, struct __res_state_ext is not exposed in BIND9, I hide it
from our resolv.h.  And, global variable _res_ext is removed.  It
breaks binary backward compatibility.  But, since it is not used from
outside of our libc, I think it is safe.

Reviewed by:	arch@ (no objection)

1 files changed, 0 insertions, 82 deletions

diff --git a/lib/libc/net/res_data.c b/lib/libc/net/res_data.c
deleted file mode 100644
index 70a7d9e..0000000
--- a/lib/libc/net/res_data.c
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
- * Copyright (c) 1995,1996 by Internet Software Consortium.
- *
- * 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.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
- * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
- * CONSORTIUM 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.
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/socket.h>
-#include <sys/time.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <arpa/nameser.h>
-#include <ctype.h>
-#include <resolv.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "res_config.h"
-
-const char *_res_opcodes[] = {
-	"QUERY",
-	"IQUERY",
-	"CQUERYM",
-	"CQUERYU",	/* experimental */
-	"NOTIFY",	/* experimental */
-	"UPDATE",
-	"6",
-	"7",
-	"8",
-	"9",
-	"10",
-	"11",
-	"12",
-	"13",
-	"ZONEINIT",
-	"ZONEREF",
-};
-
-const char *_res_resultcodes[] = {
-	"NOERROR",
-	"FORMERR",
-	"SERVFAIL",
-	"NXDOMAIN",
-	"NOTIMP",
-	"REFUSED",
-	"YXDOMAIN",
-	"YXRRSET",
-	"NXRRSET",
-	"NOTAUTH",
-	"ZONEERR",
-	"11",
-	"12",
-	"13",
-	"14",
-	"NOCHANGE",
-};
-
-#ifdef BIND_UPDATE
-const char *_res_sectioncodes[] = {
-	"ZONE",
-	"PREREQUISITES",
-	"UPDATE",
-	"ADDITIONAL",
-};
-#endif