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, 4 insertions, 121 deletions

diff --git a/lib/libc/net/Symbol.map b/lib/libc/net/Symbol.map
index 36d3b4e..1568907 100644
--- a/lib/libc/net/Symbol.map
+++ b/lib/libc/net/Symbol.map
@@ -44,10 +44,6 @@ FBSD_1.0 {
 	setservent;
 	endservent;
 	getservent;
-	#h_nerr;	# Why is this not staticized in net/herror.c?
-	h_errlist;
-	herror;
-	hstrerror;
 	hesiod_init;
 	hesiod_end;
 	hesiod_to_bind;
@@ -62,30 +58,6 @@ FBSD_1.0 {
 	if_nameindex;
 	if_freenameindex;
 	if_nametoindex;
-	__inet_addr;
-	__inet_aton;
-	inet_addr;
-	inet_aton;
-	__inet_lnaof;
-	inet_lnaof;
-	__inet_makeaddr;
-	inet_makeaddr;
-	__inet_net_ntop;
-	inet_net_ntop;
-	__inet_net_pton;
-	inet_net_pton;
-	__inet_neta;
-	inet_neta;
-	__inet_netof;
-	inet_netof;
-	__inet_network;
-	inet_network;
-	__inet_ntoa;
-	inet_ntoa;
-	__inet_ntop;
-	inet_ntop;
-	__inet_pton;
-	inet_pton;
 	inet6_option_space;
 	inet6_option_init;
 	inet6_option_append;
@@ -104,28 +76,6 @@ FBSD_1.0 {
 	getipnodebyname;
 	getipnodebyaddr;
 	freehostent;
-	__ns_name_ntop;
-	__ns_name_pton;
-	__ns_name_unpack;
-	__ns_name_pack;
-	__ns_name_uncompress;
-	__ns_name_compress;
-	__ns_name_skip;
-	__ns_get16;
-	__ns_get32;
-	__ns_put16;
-	__ns_put32;
-	__ns_initparse;
-	__ns_parserr;
-	_ns_flagdata;
-	__ns_sprintrr;
-	__ns_sprintrrf;
-	__ns_format_ttl;
-	__ns_parse_ttl;
-	__inet_nsap_addr;
-	__inet_nsap_ntoa;
-	inet_nsap_addr;
-	inet_nsap_ntoa;
 	__nsdefaultsrc;
 	_nsdbtaddsrc;
 	_nsdbtdump;
@@ -140,77 +90,10 @@ FBSD_1.0 {
 	iruserok_sa;
 	rcmdsh;
 	recv;
-	__dn_expand;
-	__dn_comp;
-	__dn_skipname;
-	__res_hnok;
-	__res_ownok;
-	__res_mailok;
-	__res_dnok;
-	__putlong;
-	__putshort;
-	_getlong;
-	_getshort;
-	dn_comp;
-	dn_expand;
-	__fp_resstat;
-	__p_query;
-	__fp_query;
-	__fp_nquery;
-	__p_cdnname;
-	__p_cdname;
-	__p_fqnname;
-	__p_fqname;
-	__p_class_syms;
-	__p_type_syms;
-	__sym_ston;
-	__sym_ntos;
-	__sym_ntop;
-	__p_type;
-	__p_section;
-	__p_class;
-	__p_option;
-	__p_time;
-	__loc_aton;
-	__loc_ntoa;
-	__dn_count_labels;
-	__p_secstodate;
-	fp_resstat;
-	p_query;
-	p_fqnname;
-	sym_ston;
-	sym_ntos;
-	sym_ntop;
-	dn_count_labels;
-	p_secstodate;
-	__res_init;
-	__res_randomid;
-	___res;
-	___res_ext;
-	__h_error;
-	h_errno;
-	res_init;
-	__res_mkquery;
-	res_mkquery;
-	__res_opt;
-	__res_mkupdate;
-	__res_mkupdrec;
-	__res_freeupdrec;
-	__res_query;
-	__res_search;
-	__res_querydomain;
-	__hostalias;
-	res_query;
-	res_search;
-	res_querydomain;
-	__res_isourserver;
-	__res_nameinquery;
-	__res_queriesmatch;
-	__res_send;
-	__res_close;
-	_res_close;
-	res_send;
-	res_update;	# Why is this not __res_update?
+	#__res_mkupdate;	# Obsoleted
+	#__res_mkupdrec;	# Obsoleted
+	#__res_freeupdrec;	# Obsoleted
+	#res_update;		# Obsoleted  Why is this not __res_update?
 	inet6_rthdr_space;
 	inet6_rthdr_init;
 	inet6_rthdr_add;