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, 92 deletions

diff --git a/lib/libc/net/inet_neta.c b/lib/libc/net/inet_neta.c
deleted file mode 100644
index c918962..0000000
--- a/lib/libc/net/inet_neta.c
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * Copyright (c) 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.
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static const char orig_rcsid[] = "From Id: inet_neta.c,v 8.2 1996/08/08 06:54:44 vixie Exp";
-#endif
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-
-#include <errno.h>
-#include <stdio.h>
-#include <string.h>
-
-#ifdef SPRINTF_CHAR
-# define SPRINTF(x) strlen(sprintf/**/x)
-#else
-# define SPRINTF(x) ((size_t)sprintf x)
-#endif
-
-/*
- * char *
- * inet_neta(src, dst, size)
- *	format an in_addr_t network number into presentation format.
- * return:
- *	pointer to dst, or NULL if an error occurred (check errno).
- * note:
- *	format of ``src'' is as for inet_network().
- * author:
- *	Paul Vixie (ISC), July 1996
- */
-char *
-inet_neta(src, dst, size)
-	in_addr_t src;
-	char *dst;
-	size_t size;
-{
-	char *odst = dst;
-	char *tp;
-
-	while (src & 0xffffffff) {
-		u_char b = (src & 0xff000000) >> 24;
-
-		src <<= 8;
-		if (b) {
-			if (size < sizeof "255.")
-				goto emsgsize;
-			tp = dst;
-			dst += SPRINTF((dst, "%u", b));
-			if (src != 0L) {
-				*dst++ = '.';
-				*dst = '\0';
-			}
-			size -= (size_t)(dst - tp);
-		}
-	}
-	if (dst == odst) {
-		if (size < sizeof "0.0.0.0")
-			goto emsgsize;
-		strcpy(dst, "0.0.0.0");
-	}
-	return (odst);
-
- emsgsize:
-	errno = EMSGSIZE;
-	return (NULL);
-}
-
-/*
- * Weak aliases for applications that use certain private entry points,
- * and fail to include <arpa/inet.h>.
- */
-#undef inet_neta
-__weak_reference(__inet_neta, inet_neta);