2003-05-28 Jeff Johnston <jjohnstn@redhat.com>

	    Tom Fitzsimmons  <fitzsim@redhat.com>

	* configure.in: Add iconvdata support for x86 linux.
	* configure: Regenerated.
	* libc/sys/linux/Makefile.am: Add EL/IX level 3 network, dynamic
	library, iconv, and linuxthreads support.
	* libc/sys/linux/configure.in: Ditto.
	* libc/sys/linux/Makefile.in: Regenerated.
	* libc/sys/linux/configure: Ditto.
	* iconvdata/EUC-JP.irreversible: New file.
	* iconvdata/Makefile.am: Ditto.
	* iconvdata/Makefile.in: Ditto.
	* iconvdata/SJIS.irreversible: Ditto.
	* iconvdata/aclocal.m4: Ditto.
	* iconvdata/configure: Ditto.
	* iconvdata/configure.in: Ditto.
	* iconvdata/dummy.c: Ditto.
	* iconvdata/euc-jp.c: Ditto.
	* iconvdata/gconv-modules: Ditto.
	* iconvdata/jis0201.c: Ditto.
	* iconvdata/jis0201.h: Ditto.
	* iconvdata/jis0208.c: Ditto.
	* iconvdata/jis0208.h: Ditto.
	* iconvdata/jis0212.c: Ditto.
	* iconvdata/jis0212.h: Ditto.
	* iconvdata/sjis.c: Ditto.
	* libc/include/errno.h: Protect definition of error_t.
	* libc/sys/linux/gethostid.c: New file.
	* libc/sys/linux/sethostid.c: Ditto.
	* libc/sys/linux/dl/Makefile.am: Ditto.
	* libc/sys/linux/dl/Makefile.in: Ditto.
	* libc/sys/linux/dl/abi-tag.h: Ditto.
	* libc/sys/linux/dl/atomicity.h: Ditto.
	* libc/sys/linux/dl/dl-addr.c: Ditto.
	* libc/sys/linux/dl/dl-cache.c: Ditto.
	* libc/sys/linux/dl/dl-cache.h: Ditto.
	* libc/sys/linux/dl/dl-close.c: Ditto.
	* libc/sys/linux/dl/dl-debug.c: Ditto.
	* libc/sys/linux/dl/dl-deps.c: Ditto.
	* libc/sys/linux/dl/dl-dst.h: Ditto.
	* libc/sys/linux/dl/dl-error.c: Ditto.
	* libc/sys/linux/dl/dl-fini.c: Ditto.
	* libc/sys/linux/dl/dl-init.c: Ditto.
	* libc/sys/linux/dl/dl-iteratephdr.c: Ditto.
	* libc/sys/linux/dl/dl-libc.c: Ditto.
	* libc/sys/linux/dl/dl-librecon.h: Ditto.
	* libc/sys/linux/dl/dl-load.c: Ditto.
	* libc/sys/linux/dl/dl-lookup.c: Ditto.
	* libc/sys/linux/dl/dl-lookupcfg.h: Ditto.
	* libc/sys/linux/dl/dl-minimal.c: Ditto.
	* libc/sys/linux/dl/dl-misc.c: Ditto.
	* libc/sys/linux/dl/dl-object.c: Ditto.
	* libc/sys/linux/dl/dl-open.c: Ditto.
	* libc/sys/linux/dl/dl-osinfo.h: Ditto.
	* libc/sys/linux/dl/dl-profile.c: Ditto.
	* libc/sys/linux/dl/dl-profstub.c: Ditto.
	* libc/sys/linux/dl/dl-reloc.c: Ditto.
	* libc/sys/linux/dl/dl-runtime.c: Ditto.
	* libc/sys/linux/dl/dl-support.c: Ditto.
	* libc/sys/linux/dl/dl-sym.c: Ditto.
	* libc/sys/linux/dl/dl-version.c: Ditto.
	* libc/sys/linux/dl/dlfcn.h: Ditto.
	* libc/sys/linux/dl/do-lookup.h: Ditto.
	* libc/sys/linux/dl/do-rel.h: Ditto.
	* libc/sys/linux/dl/dynamic-link.h: Ditto.
	* libc/sys/linux/dl/kernel-features.h: Ditto.
	* libc/sys/linux/dl/ldsodefs.h: Ditto.
	* libc/sys/linux/dl/libintl.h: Ditto.
	* libc/sys/linux/dl/trusted-dirs.h: Ditto.
	* libc/sys/linux/dl/unsecvars.h: Ditto.
	* libc/sys/linux/iconv/Makefile.am: Ditto.
	* libc/sys/linux/iconv/Makefile.in: Ditto.
	* libc/sys/linux/iconv/categories.def: Ditto.
	* libc/sys/linux/iconv/dummy-repertoire.c: Ditto.
	* libc/sys/linux/iconv/gconv.c: Ditto.
	* libc/sys/linux/iconv/gconv_builtin.c: Ditto.
	* libc/sys/linux/iconv/gconv_builtin.h: Ditto.
	* libc/sys/linux/iconv/gconv_cache.c: Ditto.
	* libc/sys/linux/iconv/gconv_charset.h: Ditto.
	* libc/sys/linux/iconv/gconv_close.c: Ditto.
	* libc/sys/linux/iconv/gconv_conf.c: Ditto.
	* libc/sys/linux/iconv/gconv_db.c: Ditto.
	* libc/sys/linux/iconv/gconv_dl.c: Ditto.
	* libc/sys/linux/iconv/gconv_int.h: Ditto.
	* libc/sys/linux/iconv/gconv_open.c: Ditto.
	* libc/sys/linux/iconv/gconv_simple.c: Ditto.
	* libc/sys/linux/iconv/gconv_trans.c: Ditto.
	* libc/sys/linux/iconv/hash-string.h: Ditto.
	* libc/sys/linux/iconv/iconv.c: Ditto.
	* libc/sys/linux/iconv/iconv.h: Ditto.
	* libc/sys/linux/iconv/iconv_charmap.c: Ditto.
	* libc/sys/linux/iconv/iconv_close.c: Ditto.
	* libc/sys/linux/iconv/iconv_open.c: Ditto.
	* libc/sys/linux/iconv/iconvconfig.c: Ditto.
	* libc/sys/linux/iconv/iconvconfig.h: Ditto.
	* libc/sys/linux/iconv/loadinfo.h: Ditto.
	* libc/sys/linux/iconv/localeinfo.h: Ditto.
	* libc/sys/linux/iconv/loop.c: Ditto.
	* libc/sys/linux/iconv/skeleton.c: Ditto.
	* libc/sys/linux/iconv/strtab.c: Ditto.
	* libc/sys/linux/include/dl-hash.h: Ditto.
	* libc/sys/linux/include/dlfcn.h: Ditto.
	* libc/sys/linux/include/fnmatch.h: Ditto.
	* libc/sys/linux/include/gconv.h: Ditto.
	* libc/sys/linux/include/glob.h: Ditto.
	* libc/sys/linux/include/hesiod.h: Ditto.
	* libc/sys/linux/include/ifaddrs.h: Ditto.
	* libc/sys/linux/include/libc_private.h: Ditto.
	* libc/sys/linux/include/link.h: Ditto.
	* libc/sys/linux/include/namespace.h: Ditto.
	* libc/sys/linux/include/netconfig.h: Ditto.
	* libc/sys/linux/include/netdb.h: Ditto.
	* libc/sys/linux/include/nsswitch.h: Ditto.
	* libc/sys/linux/include/regex.h: Ditto.
	* libc/sys/linux/include/resolv.h: Ditto.
	* libc/sys/linux/include/rune.h: Ditto.
	* libc/sys/linux/include/runetype.h: Ditto.
	* libc/sys/linux/include/semaphore.h: Ditto.
	* libc/sys/linux/include/setlocale.h: Ditto.
	* libc/sys/linux/include/un-namespace.h: Ditto.
	* libc/sys/linux/include/wordexp.h: Ditto.
	* libc/sys/linux/include/arpa/ftp.h: Ditto.
	* libc/sys/linux/include/arpa/inet.h: Ditto.
	* libc/sys/linux/include/arpa/nameser.h: Ditto.
	* libc/sys/linux/include/arpa/nameser_compat.h: Ditto.
	* libc/sys/linux/include/arpa/telnet.h: Ditto.
	* libc/sys/linux/include/arpa/tftp.h: Ditto.
	* libc/sys/linux/include/net/bpf.h: Ditto.
	* libc/sys/linux/include/net/bpf_compat.h: Ditto.
	* libc/sys/linux/include/net/bpfdesc.h: Ditto.
	* libc/sys/linux/include/net/bridge.h: Ditto.
	* libc/sys/linux/include/net/ethernet.h: Ditto.
	* libc/sys/linux/include/net/fddi.h: Ditto.
	* libc/sys/linux/include/net/if.h: Ditto.
	* libc/sys/linux/include/net/if_arc.h: Ditto.
	* libc/sys/linux/include/net/if_arp.h: Ditto.
	* libc/sys/linux/include/net/if_atm.h: Ditto.
	* libc/sys/linux/include/net/if_dl.h: Ditto.
	* libc/sys/linux/include/net/if_gif.h: Ditto.
	* libc/sys/linux/include/net/if_ieee80211.h: Ditto.
	* libc/sys/linux/include/net/if_llc.h: Ditto.
	* libc/sys/linux/include/net/if_media.h: Ditto.
	* libc/sys/linux/include/net/if_mib.h: Ditto.
	* libc/sys/linux/include/net/if_ppp.h: Ditto.
	* libc/sys/linux/include/net/if_pppvar.h: Ditto.
	* libc/sys/linux/include/net/if_slvar.h: Ditto.
	* libc/sys/linux/include/net/if_sppp.h: Ditto.
	* libc/sys/linux/include/net/if_stf.h: Ditto.
	* libc/sys/linux/include/net/if_tap.h: Ditto.
	* libc/sys/linux/include/net/if_tapvar.h: Ditto.
	* libc/sys/linux/include/net/if_tun.h: Ditto.
	* libc/sys/linux/include/net/if_tunvar.h: Ditto.
	* libc/sys/linux/include/net/if_types.h: Ditto.
	* libc/sys/linux/include/net/if_var.h: Ditto.
	* libc/sys/linux/include/net/if_vlan_var.h: Ditto.
	* libc/sys/linux/include/net/intrq.h: Ditto.
	* libc/sys/linux/include/net/iso88025.h: Ditto.
	* libc/sys/linux/include/net/net_osdep.h: Ditto.
	* libc/sys/linux/include/net/netisr.h: Ditto.
	* libc/sys/linux/include/net/pfil.h: Ditto.
	* libc/sys/linux/include/net/pfkeyv2.h: Ditto.
	* libc/sys/linux/include/net/ppp_comp.h: Ditto.
	* libc/sys/linux/include/net/ppp_defs.h: Ditto.
	* libc/sys/linux/include/net/radix.h: Ditto.
	* libc/sys/linux/include/net/raw_cb.h: Ditto.
	* libc/sys/linux/include/net/route.h: Ditto.
	* libc/sys/linux/include/net/slcompress.h: Ditto.
	* libc/sys/linux/include/net/slip.h: Ditto.
	* libc/sys/linux/include/net/zlib.h: Ditto.
	* libc/sys/linux/include/netinet/icmp6.h: Ditto.
	* libc/sys/linux/include/netinet/icmp_var.h: Ditto.
	* libc/sys/linux/include/netinet/if_atm.h: Ditto.
	* libc/sys/linux/include/netinet/if_ether.h: Ditto.
	* libc/sys/linux/include/netinet/igmp.h: Ditto.
	* libc/sys/linux/include/netinet/igmp_var.h: Ditto.
	* libc/sys/linux/include/netinet/in.h: Ditto.
	* libc/sys/linux/include/netinet/in_gif.h: Ditto.
	* libc/sys/linux/include/netinet/in_pcb.h: Ditto.
	* libc/sys/linux/include/netinet/in_systm.h: Ditto.
	* libc/sys/linux/include/netinet/in_var.h: Ditto.
	* libc/sys/linux/include/netinet/ip.h: Ditto.
	* libc/sys/linux/include/netinet/ip6.h: Ditto.
	* libc/sys/linux/include/netinet/ip_dummynet.h: Ditto.
	* libc/sys/linux/include/netinet/ip_ecn.h: Ditto.
	* libc/sys/linux/include/netinet/ip_encap.h: Ditto.
	* libc/sys/linux/include/netinet/ip_flow.h: Ditto.
	* libc/sys/linux/include/netinet/ip_fw.h: Ditto.
	* libc/sys/linux/include/netinet/ip_icmp.h: Ditto.
	* libc/sys/linux/include/netinet/ip_mroute.h: Ditto.
	* libc/sys/linux/include/netinet/ip_var.h: Ditto.
	* libc/sys/linux/include/netinet/ipprotosw.h: Ditto.
	* libc/sys/linux/include/netinet/tcp.h: Ditto.
	* libc/sys/linux/include/netinet/tcp_debug.h: Ditto.
	* libc/sys/linux/include/netinet/tcp_fsm.h: Ditto.
	* libc/sys/linux/include/netinet/tcp_seq.h: Ditto.
	* libc/sys/linux/include/netinet/tcp_timer.h: Ditto.
	* libc/sys/linux/include/netinet/tcp_var.h: Ditto.
	* libc/sys/linux/include/netinet/tcpip.h: Ditto.
	* libc/sys/linux/include/netinet/udp.h: Ditto.
	* libc/sys/linux/include/netinet/udp_var.h: Ditto.
	* libc/sys/linux/include/netinet6/ah.h: Ditto.
	* libc/sys/linux/include/netinet6/ah6.h: Ditto.
	* libc/sys/linux/include/netinet6/esp.h: Ditto.
	* libc/sys/linux/include/netinet6/esp6.h: Ditto.
	* libc/sys/linux/include/netinet6/esp_rijndael.h: Ditto.
	* libc/sys/linux/include/netinet6/icmp6.h: Ditto.
	* libc/sys/linux/include/netinet6/in6.h: Ditto.
	* libc/sys/linux/include/netinet6/in6_gif.h: Ditto.
	* libc/sys/linux/include/netinet6/in6_ifattach.h: Ditto.
	* libc/sys/linux/include/netinet6/in6_pcb.h: Ditto.
	* libc/sys/linux/include/netinet6/in6_prefix.h: Ditto.
	* libc/sys/linux/include/netinet6/in6_var.h: Ditto.
	* libc/sys/linux/include/netinet6/ip6.h: Ditto.
	* libc/sys/linux/include/netinet6/ip6_ecn.h: Ditto.
	* libc/sys/linux/include/netinet6/ip6_fw.h: Ditto.
	* libc/sys/linux/include/netinet6/ip6_mroute.h: Ditto.
	* libc/sys/linux/include/netinet6/ip6_var.h: Ditto.
	* libc/sys/linux/include/netinet6/ip6protosw.h: Ditto.
	* libc/sys/linux/include/netinet6/ipcomp.h: Ditto.
	* libc/sys/linux/include/netinet6/ipcomp6.h: Ditto.
	* libc/sys/linux/include/netinet6/ipsec.h: Ditto.
	* libc/sys/linux/include/netinet6/ipsec6.h: Ditto.
	* libc/sys/linux/include/netinet6/mld6_var.h: Ditto.
	* libc/sys/linux/include/netinet6/nd6.h: Ditto.
	* libc/sys/linux/include/netinet6/pim6.h: Ditto.
	* libc/sys/linux/include/netinet6/pim6_var.h: Ditto.
	* libc/sys/linux/include/netinet6/raw_ip6.h: Ditto.
	* libc/sys/linux/include/netinet6/scope6_var.h: Ditto.
	* libc/sys/linux/include/netinet6/tcp6_var.h: Ditto.
	* libc/sys/linux/include/netinet6/udp6_var.h: Ditto.
	* libc/sys/linux/include/netns/idp.h: Ditto.
	* libc/sys/linux/include/netns/idp_var.h: Ditto.
	* libc/sys/linux/include/netns/ns.h: Ditto.
	* libc/sys/linux/include/netns/ns_error.h: Ditto.
	* libc/sys/linux/include/netns/ns_if.h: Ditto.
	* libc/sys/linux/include/netns/ns_pcb.h: Ditto.
	* libc/sys/linux/include/netns/sp.h: Ditto.
	* libc/sys/linux/include/netns/spidp.h: Ditto.
	* libc/sys/linux/include/netns/spp_debug.h: Ditto.
	* libc/sys/linux/include/netns/spp_timer.h: Ditto.
	* libc/sys/linux/include/netns/spp_var.h: Ditto.
	* libc/sys/linux/include/rpc/Makefile: Ditto.
	* libc/sys/linux/include/rpc/auth.h: Ditto.
	* libc/sys/linux/include/rpc/auth_des.h: Ditto.
	* libc/sys/linux/include/rpc/auth_kerb.h: Ditto.
	* libc/sys/linux/include/rpc/auth_unix.h: Ditto.
	* libc/sys/linux/include/rpc/clnt.h: Ditto.
	* libc/sys/linux/include/rpc/clnt_soc.h: Ditto.
	* libc/sys/linux/include/rpc/clnt_stat.h: Ditto.
	* libc/sys/linux/include/rpc/des.h: Ditto.
	* libc/sys/linux/include/rpc/des_crypt.h: Ditto.
	* libc/sys/linux/include/rpc/nettype.h: Ditto.
	* libc/sys/linux/include/rpc/pmap_clnt.h: Ditto.
	* libc/sys/linux/include/rpc/pmap_prot.h: Ditto.
	* libc/sys/linux/include/rpc/pmap_rmt.h: Ditto.
	* libc/sys/linux/include/rpc/raw.h: Ditto.
	* libc/sys/linux/include/rpc/rpc.h: Ditto.
	* libc/sys/linux/include/rpc/rpc_com.h: Ditto.
	* libc/sys/linux/include/rpc/rpc_msg.h: Ditto.
	* libc/sys/linux/include/rpc/rpcb_clnt.h: Ditto.
	* libc/sys/linux/include/rpc/rpcb_prot.h: Ditto.
	* libc/sys/linux/include/rpc/rpcb_prot.x: Ditto.
	* libc/sys/linux/include/rpc/rpcent.h: Ditto.
	* libc/sys/linux/include/rpc/svc.h: Ditto.
	* libc/sys/linux/include/rpc/svc_auth.h: Ditto.
	* libc/sys/linux/include/rpc/svc_dg.h: Ditto.
	* libc/sys/linux/include/rpc/svc_soc.h: Ditto.
	* libc/sys/linux/include/rpc/types.h: Ditto.
	* libc/sys/linux/include/rpc/xdr.h: Ditto.
	* libc/sys/linux/intl/Makefile.am: Ditto.
	* libc/sys/linux/intl/Makefile.in: Ditto.
	* libc/sys/linux/intl/bindtextdom.c: Ditto.
	* libc/sys/linux/intl/catgets.c: Ditto.
	* libc/sys/linux/intl/catgetsinfo.h: Ditto.
	* libc/sys/linux/intl/config.h: Ditto.
	* libc/sys/linux/intl/dcgettext.c: Ditto.
	* libc/sys/linux/intl/dcigettext.c: Ditto.
	* libc/sys/linux/intl/dcngettext.c: Ditto.
	* libc/sys/linux/intl/dgettext.c: Ditto.
	* libc/sys/linux/intl/dngettext.c: Ditto.
	* libc/sys/linux/intl/explodename.c: Ditto.
	* libc/sys/linux/intl/finddomain.c: Ditto.
	* libc/sys/linux/intl/gettext.c: Ditto.
	* libc/sys/linux/intl/gettext.h: Ditto.
	* libc/sys/linux/intl/gettextP.h: Ditto.
	* libc/sys/linux/intl/hash-string.h: Ditto.
	* libc/sys/linux/intl/l10nflist.c: Ditto.
	* libc/sys/linux/intl/loadinfo.h: Ditto.
	* libc/sys/linux/intl/loadmsgcat.c: Ditto.
	* libc/sys/linux/intl/locale.alias: Ditto.
	* libc/sys/linux/intl/localealias.c: Ditto.
	* libc/sys/linux/intl/ngettext.c: Ditto.
	* libc/sys/linux/intl/open_catalog.c: Ditto.
	* libc/sys/linux/intl/plural.c: Ditto.
	* libc/sys/linux/intl/plural.y: Ditto.
	* libc/sys/linux/intl/stpcpy.c: Ditto.
	* libc/sys/linux/intl/textdomain.c: Ditto.
	* libc/sys/linux/linuxthreads/LICENSE: Ditto.
	* libc/sys/linux/linuxthreads/Makefile.am: Ditto.
	* libc/sys/linux/linuxthreads/Makefile.in: Ditto.
	* libc/sys/linux/linuxthreads/aclocal.m4: Ditto.
	* libc/sys/linux/linuxthreads/attr.c: Ditto.
	* libc/sys/linux/linuxthreads/barrier.c: Ditto.
	* libc/sys/linux/linuxthreads/bp-sym.h: Ditto.
	* libc/sys/linux/linuxthreads/cancel.c: Ditto.
	* libc/sys/linux/linuxthreads/condvar.c: Ditto.
	* libc/sys/linux/linuxthreads/config.h: Ditto.
	* libc/sys/linux/linuxthreads/configure: Ditto.
	* libc/sys/linux/linuxthreads/configure.in: Ditto.
	* libc/sys/linux/linuxthreads/defs.awk: Ditto.
	* libc/sys/linux/linuxthreads/ecmutex.c: Ditto.
	* libc/sys/linux/linuxthreads/events.c: Ditto.
	* libc/sys/linux/linuxthreads/getcpuclockid.c: Ditto.
	* libc/sys/linux/linuxthreads/getreent.c: Ditto.
	* libc/sys/linux/linuxthreads/internals.h: Ditto.
	* libc/sys/linux/linuxthreads/join.c: Ditto.
	* libc/sys/linux/linuxthreads/joinrace.c: Ditto.
	* libc/sys/linux/linuxthreads/kernel-features.h: Ditto.
	* libc/sys/linux/linuxthreads/libc-internal.h: Ditto.
	* libc/sys/linux/linuxthreads/libc-symbols.h: Ditto.
	* libc/sys/linux/linuxthreads/linuxthreads.texi: Ditto.
	* libc/sys/linux/linuxthreads/lockfile.c: Ditto.
	* libc/sys/linux/linuxthreads/manager.c: Ditto.
	* libc/sys/linux/linuxthreads/mq_notify.c: Ditto.
	* libc/sys/linux/linuxthreads/mutex.c: Ditto.
	* libc/sys/linux/linuxthreads/no-tsd.c: Ditto.
	* libc/sys/linux/linuxthreads/oldsemaphore.c: Ditto.
	* libc/sys/linux/linuxthreads/posix-timer.h: Ditto.
	* libc/sys/linux/linuxthreads/prio.c: Ditto.
	* libc/sys/linux/linuxthreads/proc_service.h: Ditto.
	* libc/sys/linux/linuxthreads/pt-machine.c: Ditto.
	* libc/sys/linux/linuxthreads/ptclock_gettime.c: Ditto.
	* libc/sys/linux/linuxthreads/ptclock_settime.c: Ditto.
	* libc/sys/linux/linuxthreads/ptfork.c: Ditto.
	* libc/sys/linux/linuxthreads/pthread.c: Ditto.
	* libc/sys/linux/linuxthreads/ptlongjmp.c: Ditto.
	* libc/sys/linux/linuxthreads/queue.h: Ditto.
	* libc/sys/linux/linuxthreads/reent.c: Ditto.
	* libc/sys/linux/linuxthreads/reqsyscalls.c: Ditto.
	* libc/sys/linux/linuxthreads/restart.h: Ditto.
	* libc/sys/linux/linuxthreads/rwlock.c: Ditto.
	* libc/sys/linux/linuxthreads/semaphore.c: Ditto.
	* libc/sys/linux/linuxthreads/semaphore.h: Ditto.
	* libc/sys/linux/linuxthreads/shlib-compat.h: Ditto.
	* libc/sys/linux/linuxthreads/signals.c: Ditto.
	* libc/sys/linux/linuxthreads/specific.c: Ditto.
	* libc/sys/linux/linuxthreads/spinlock.c: Ditto.
	* libc/sys/linux/linuxthreads/spinlock.h: Ditto.
	* libc/sys/linux/linuxthreads/sysctl.c: Ditto.
	* libc/sys/linux/linuxthreads/td_init.c: Ditto.
	* libc/sys/linux/linuxthreads/td_log.c: Ditto.
	* libc/sys/linux/linuxthreads/td_symbol_list.c: Ditto.
	* libc/sys/linux/linuxthreads/td_ta_clear_event.c: Ditto.
	* libc/sys/linux/linuxthreads/td_ta_delete.c: Ditto.
	* libc/sys/linux/linuxthreads/td_ta_enable_stats.c: Ditto.
	* libc/sys/linux/linuxthreads/td_ta_event_addr.c: Ditto.
	* libc/sys/linux/linuxthreads/td_ta_event_getmsg.c: Ditto.
	* libc/sys/linux/linuxthreads/td_ta_get_nthreads.c: Ditto.
	* libc/sys/linux/linuxthreads/td_ta_get_ph.c: Ditto.
	* libc/sys/linux/linuxthreads/td_ta_get_stats.c: Ditto.
	* libc/sys/linux/linuxthreads/td_ta_map_id2thr.c: Ditto.
	* libc/sys/linux/linuxthreads/td_ta_map_lwp2thr.c: Ditto.
	* libc/sys/linux/linuxthreads/td_ta_new.c: Ditto.
	* libc/sys/linux/linuxthreads/td_ta_reset_stats.c: Ditto.
	* libc/sys/linux/linuxthreads/td_ta_set_event.c: Ditto.
	* libc/sys/linux/linuxthreads/td_ta_setconcurrency.c: Ditto.
	* libc/sys/linux/linuxthreads/td_ta_thr_iter.c: Ditto.
	* libc/sys/linux/linuxthreads/td_ta_tsd_iter.c: Ditto.
	* libc/sys/linux/linuxthreads/td_thr_clear_event.c: Ditto.
	* libc/sys/linux/linuxthreads/td_thr_dbresume.c: Ditto.
	* libc/sys/linux/linuxthreads/td_thr_dbsuspend.c: Ditto.
	* libc/sys/linux/linuxthreads/td_thr_event_enable.c: Ditto.
	* libc/sys/linux/linuxthreads/td_thr_event_getmsg.c: Ditto.
	* libc/sys/linux/linuxthreads/td_thr_get_info.c: Ditto.
	* libc/sys/linux/linuxthreads/td_thr_getfpregs.c: Ditto.
	* libc/sys/linux/linuxthreads/td_thr_getgregs.c: Ditto.
	* libc/sys/linux/linuxthreads/td_thr_getxregs.c: Ditto.
	* libc/sys/linux/linuxthreads/td_thr_getxregsize.c: Ditto.
	* libc/sys/linux/linuxthreads/td_thr_set_event.c: Ditto.
	* libc/sys/linux/linuxthreads/td_thr_setfpregs.c: Ditto.
	* libc/sys/linux/linuxthreads/td_thr_setgregs.c: Ditto.
	* libc/sys/linux/linuxthreads/td_thr_setprio.c: Ditto.
	* libc/sys/linux/linuxthreads/td_thr_setsigpending.c: Ditto.
	* libc/sys/linux/linuxthreads/td_thr_setxregs.c: Ditto.
	* libc/sys/linux/linuxthreads/td_thr_sigsetmask.c: Ditto.
	* libc/sys/linux/linuxthreads/td_thr_tsd.c: Ditto.
	* libc/sys/linux/linuxthreads/td_thr_validate.c: Ditto.
	* libc/sys/linux/linuxthreads/testrtsig.h: Ditto.
	* libc/sys/linux/linuxthreads/thread_db.h: Ditto.
	* libc/sys/linux/linuxthreads/thread_dbP.h: Ditto.
	* libc/sys/linux/linuxthreads/timer_create.c: Ditto.
	* libc/sys/linux/linuxthreads/timer_delete.c: Ditto.
	* libc/sys/linux/linuxthreads/timer_getoverr.c: Ditto.
	* libc/sys/linux/linuxthreads/timer_gettime.c: Ditto.
	* libc/sys/linux/linuxthreads/timer_routines.c: Ditto.
	* libc/sys/linux/linuxthreads/timer_settime.c: Ditto.
	* libc/sys/linux/linuxthreads/tst-cancel.c: Ditto.
	* libc/sys/linux/linuxthreads/tst-context.c: Ditto.
	* libc/sys/linux/linuxthreads/tststack.c: Ditto.
	* libc/sys/linux/linuxthreads/unload.c: Ditto.
	* libc/sys/linux/linuxthreads/weaks.c: Ditto.
	* libc/sys/linux/linuxthreads/wrapsyscall.c: Ditto.
	* libc/sys/linux/linuxthreads/bits/initspin.h: Ditto.
	* libc/sys/linux/linuxthreads/bits/libc-lock.h: Ditto.
	* libc/sys/linux/linuxthreads/bits/libc-tsd.h: Ditto.
	* libc/sys/linux/linuxthreads/bits/local_lim.h: Ditto.
	* libc/sys/linux/linuxthreads/bits/posix_opt.h: Ditto.
	* libc/sys/linux/linuxthreads/bits/pthreadtypes.h: Ditto.
	* libc/sys/linux/linuxthreads/bits/sigthread.h: Ditto.
	* libc/sys/linux/linuxthreads/machine/Makefile.am: Ditto.
	* libc/sys/linux/linuxthreads/machine/Makefile.in: Ditto.
	* libc/sys/linux/linuxthreads/machine/aclocal.m4: Ditto.
	* libc/sys/linux/linuxthreads/machine/configure: Ditto.
	* libc/sys/linux/linuxthreads/machine/configure.in: Ditto.
	* libc/sys/linux/linuxthreads/machine/generic/generic-sysd: Ditto.ep.h
	* libc/sys/linux/linuxthreads/machine/i386/Makefile.am: Ditto.
	* libc/sys/linux/linuxthreads/machine/i386/Makefile.in: Ditto.
	* libc/sys/linux/linuxthreads/machine/i386/aclocal.m4: Ditto.
	* libc/sys/linux/linuxthreads/machine/i386/bp-asm.h: Ditto.
	* libc/sys/linux/linuxthreads/machine/i386/clone.S: Ditto.
	* libc/sys/linux/linuxthreads/machine/i386/configure: Ditto.
	* libc/sys/linux/linuxthreads/machine/i386/configure.in: Ditto.
	* libc/sys/linux/linuxthreads/machine/i386/i386-sysdep.S: Ditto.
	* libc/sys/linux/linuxthreads/machine/i386/i386-sysdep.h: Ditto.
	* libc/sys/linux/linuxthreads/machine/i386/pspinlock.c: Ditto.
	* libc/sys/linux/linuxthreads/machine/i386/pt-machine.h: Ditto.
	* libc/sys/linux/linuxthreads/machine/i386/sigcontextinfo.h: Ditto.
	* libc/sys/linux/linuxthreads/machine/i386/stackinfo.h: Ditto.
	* libc/sys/linux/linuxthreads/machine/i386/sysdep.S: Ditto.
	* libc/sys/linux/linuxthreads/machine/i386/sysdep.h: Ditto.
	* libc/sys/linux/linuxthreads/machine/i386/useldt.h: Ditto.
	* libc/sys/linux/machine/i386/dl-machine.h: Ditto.
	* libc/sys/linux/net/Makefile.am: Ditto.
	* libc/sys/linux/net/Makefile.in: Ditto.
	* libc/sys/linux/net/addr2ascii.3: Ditto.
	* libc/sys/linux/net/addr2ascii.c: Ditto.
	* libc/sys/linux/net/ascii2addr.c: Ditto.
	* libc/sys/linux/net/base64.c: Ditto.
	* libc/sys/linux/net/bindresvport.c: Ditto.
	* libc/sys/linux/net/byteorder.3: Ditto.
	* libc/sys/linux/net/ether_addr.c: Ditto.
	* libc/sys/linux/net/ethers.3: Ditto.
	* libc/sys/linux/net/getaddrinfo.3: Ditto.
	* libc/sys/linux/net/getaddrinfo.c: Ditto.
	* libc/sys/linux/net/gethostbydns.c: Ditto.
	* libc/sys/linux/net/gethostbyht.c: Ditto.
	* libc/sys/linux/net/gethostbyname.3: Ditto.
	* libc/sys/linux/net/gethostbynis.c: Ditto.
	* libc/sys/linux/net/gethostnamadr.c: Ditto.
	* libc/sys/linux/net/getifaddrs.3: Ditto.
	* libc/sys/linux/net/getifaddrs.c: Ditto.
	* libc/sys/linux/net/getipnodebyname.3: Ditto.
	* libc/sys/linux/net/getnameinfo.3: Ditto.
	* libc/sys/linux/net/getnameinfo.c: Ditto.
	* libc/sys/linux/net/getnetbydns.c: Ditto.
	* libc/sys/linux/net/getnetbyht.c: Ditto.
	* libc/sys/linux/net/getnetbynis.c: Ditto.
	* libc/sys/linux/net/getnetent.3: Ditto.
	* libc/sys/linux/net/getnetnamadr.c: Ditto.
	* libc/sys/linux/net/getproto.c: Ditto.
	* libc/sys/linux/net/getprotoent.3: Ditto.
	* libc/sys/linux/net/getprotoent.c: Ditto.
	* libc/sys/linux/net/getprotoname.c: Ditto.
	* libc/sys/linux/net/getservbyname.c: Ditto.
	* libc/sys/linux/net/getservbyport.c: Ditto.
	* libc/sys/linux/net/getservent.3: Ditto.
	* libc/sys/linux/net/getservent.c: Ditto.
	* libc/sys/linux/net/herror.c: Ditto.
	* libc/sys/linux/net/hesiod.3: Ditto.
	* libc/sys/linux/net/hesiod.c: Ditto.
	* libc/sys/linux/net/if_indextoname.3: Ditto.
	* libc/sys/linux/net/ifname.c: Ditto.
	* libc/sys/linux/net/inet.3: Ditto.
	* libc/sys/linux/net/inet6_option_s: Ditto.pace.3
	* libc/sys/linux/net/inet6_rthdr_space.3: Ditto.
	* libc/sys/linux/net/inet_addr.c: Ditto.
	* libc/sys/linux/net/inet_lnaof.c: Ditto.
	* libc/sys/linux/net/inet_makeaddr.c: Ditto.
	* libc/sys/linux/net/inet_net.3: Ditto.
	* libc/sys/linux/net/inet_net_ntop.c: Ditto.
	* libc/sys/linux/net/inet_net_pton.c: Ditto.
	* libc/sys/linux/net/inet_neta.c: Ditto.
	* libc/sys/linux/net/inet_netof.c: Ditto.
	* libc/sys/linux/net/inet_network.c: Ditto.
	* libc/sys/linux/net/inet_ntoa.c: Ditto.
	* libc/sys/linux/net/inet_ntop.c: Ditto.
	* libc/sys/linux/net/inet_pton.c: Ditto.
	* libc/sys/linux/net/innetgr-stub.c: Ditto.
	* libc/sys/linux/net/ip6opt.c: Ditto.
	* libc/sys/linux/net/iso_addr.3: Ditto.
	* libc/sys/linux/net/iso_addr.c: Ditto.
	* libc/sys/linux/net/issetugid-stub.c: Ditto.
	* libc/sys/linux/net/linkaddr.3: Ditto.
	* libc/sys/linux/net/linkaddr.c: Ditto.
	* libc/sys/linux/net/map_v4v6.c: Ditto.
	* libc/sys/linux/net/name6.c: Ditto.
	* libc/sys/linux/net/namespace.h: Ditto.
	* libc/sys/linux/net/ns.3: Ditto.
	* libc/sys/linux/net/ns_addr.c: Ditto.
	* libc/sys/linux/net/ns_name.c: Ditto.
	* libc/sys/linux/net/ns_netint.c: Ditto.
	* libc/sys/linux/net/ns_ntoa.c: Ditto.
	* libc/sys/linux/net/ns_parse.c: Ditto.
	* libc/sys/linux/net/ns_print.c: Ditto.
	* libc/sys/linux/net/ns_ttl.c: Ditto.
	* libc/sys/linux/net/nsap_addr.c: Ditto.
	* libc/sys/linux/net/nsdispatch.3: Ditto.
	* libc/sys/linux/net/nsdispatch.c: Ditto.
	* libc/sys/linux/net/nslexer.c: Ditto.
	* libc/sys/linux/net/nslexer.l: Ditto.
	* libc/sys/linux/net/nsparser.c: Ditto.
	* libc/sys/linux/net/nsparser.h: Ditto.
	* libc/sys/linux/net/nsparser.y: Ditto.
	* libc/sys/linux/net/rcmd.3: Ditto.
	* libc/sys/linux/net/rcmd.c: Ditto.
	* libc/sys/linux/net/rcmdsh.3: Ditto.
	* libc/sys/linux/net/rcmdsh.c: Ditto.
	* libc/sys/linux/net/recv.c: Ditto.
	* libc/sys/linux/net/res_comp.c: Ditto.
	* libc/sys/linux/net/res_config.h: Ditto.
	* libc/sys/linux/net/res_data.c: Ditto.
	* libc/sys/linux/net/res_debug.c: Ditto.
	* libc/sys/linux/net/res_init.c: Ditto.
	* libc/sys/linux/net/res_mkquery.c: Ditto.
	* libc/sys/linux/net/res_mkupdate.c: Ditto.
	* libc/sys/linux/net/res_query.c: Ditto.
	* libc/sys/linux/net/res_send.c: Ditto.
	* libc/sys/linux/net/res_update.c: Ditto.
	* libc/sys/linux/net/resolver.3: Ditto.
	* libc/sys/linux/net/rthdr.c: Ditto.
	* libc/sys/linux/net/send.c: Ditto.
	* libc/sys/linux/net/un-namespace.h: Ditto.
	* libc/sys/linux/net/vars.c: Ditto.
	* libc/sys/linux/stdlib/COPYRIGHT: Ditto.
	* libc/sys/linux/stdlib/Makefile.am: Ditto.
	* libc/sys/linux/stdlib/Makefile.in: Ditto.
	* libc/sys/linux/stdlib/cclass.h: Ditto.
	* libc/sys/linux/stdlib/cname.h: Ditto.
	* libc/sys/linux/stdlib/collate.c: Ditto.
	* libc/sys/linux/stdlib/collate.h: Ditto.
	* libc/sys/linux/stdlib/collcmp.c: Ditto.
	* libc/sys/linux/stdlib/engine.c: Ditto.
	* libc/sys/linux/stdlib/fnmatch.3: Ditto.
	* libc/sys/linux/stdlib/fnmatch.c: Ditto.
	* libc/sys/linux/stdlib/glob.3: Ditto.
	* libc/sys/linux/stdlib/glob.c: Ditto.
	* libc/sys/linux/stdlib/reallocf.c: Ditto.
	* libc/sys/linux/stdlib/regcomp.c: Ditto.
	* libc/sys/linux/stdlib/regerror.c: Ditto.
	* libc/sys/linux/stdlib/regex.3: Ditto.
	* libc/sys/linux/stdlib/regex2.h: Ditto.
	* libc/sys/linux/stdlib/regexec.c: Ditto.
	* libc/sys/linux/stdlib/regfree.c: Ditto.
	* libc/sys/linux/stdlib/utils.h: Ditto.
	* libc/sys/linux/stdlib/wordexp.c: Ditto.
	* libc/sys/linux/stdlib/wordfree.c: Ditto.
	* libc/sys/linux/sys/dlfcn.h: Ditto.
	* libc/sys/linux/sys/elfclass.h: Ditto.
	* libc/sys/linux/sys/event.h: Ditto.
	* libc/sys/linux/sys/ioccom.h: Ditto.
	* libc/sys/linux/sys/libc-tsd.h: Ditto.
	* libc/sys/linux/sys/link.h: Ditto.
	* libc/sys/linux/sys/lock.h: Ditto.
	* libc/sys/linux/sys/param.h: Ditto.
	* libc/sys/linux/sys/socket.h: Ditto.
	* libc/sys/linux/sys/sockio.h: Ditto.

1 files changed, 1812 insertions, 0 deletions

diff --git a/newlib/libc/sys/linux/net/name6.c b/newlib/libc/sys/linux/net/name6.c
new file mode 100644
index 000000000..80037e8f9
--- /dev/null
+++ b/newlib/libc/sys/linux/net/name6.c
@@ -0,0 +1,1812 @@
+/*	$KAME: name6.c,v 1.25 2000/06/26 16:44:40 itojun Exp $	*/
+
+/*
+ * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+/*
+ * ++Copyright++ 1985, 1988, 1993
+ * -
+ * Copyright (c) 1985, 1988, 1993
+ *    The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ * 	This product includes software developed by the University of
+ * 	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * -
+ * Portions Copyright (c) 1993 by Digital Equipment Corporation.
+ *
+ * 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, and that
+ * the name of Digital Equipment Corporation not be used in advertising or
+ * publicity pertaining to distribution of the document or software without
+ * specific, written prior permission.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
+ * CORPORATION 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.
+ * -
+ * --Copyright--
+ */
+
+/*
+ *	Atsushi Onoe <onoe@sm.sony.co.jp>
+ */
+
+/*
+ * TODO for thread safe
+ *	use mutex for _hostconf, _hostconf_init.
+ *	rewrite resolvers to be thread safe
+ */
+
+#include <sys/cdefs.h>
+#include <sys/types.h>
+#include <machine/endian.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "namespace.h"
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <sys/queue.h>
+#include <netinet/in.h>
+
+#include <arpa/inet.h>
+#include <arpa/nameser.h>
+
+#include <errno.h>
+#include <netdb.h>
+#include <resolv.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <nsswitch.h>
+#include <unistd.h>
+#include "un-namespace.h"
+
+#ifndef _PATH_HOSTS
+#define	_PATH_HOSTS	"/etc/hosts"
+#endif
+
+#ifndef MAXALIASES
+#define	MAXALIASES	35
+#endif
+#ifndef	MAXADDRS
+#define	MAXADDRS	2
+#endif
+#ifndef MAXDNAME
+#define	MAXDNAME	1025
+#endif
+
+#ifdef INET6
+#define	ADDRLEN(af)	((af) == AF_INET6 ? sizeof(struct in6_addr) : \
+					    sizeof(struct in_addr))
+#else
+#define	ADDRLEN(af)	sizeof(struct in_addr)
+#endif
+
+#define	MAPADDR(ab, ina) \
+do {									\
+	memcpy(&(ab)->map_inaddr, ina, sizeof(struct in_addr));		\
+	memset((ab)->map_zero, 0, sizeof((ab)->map_zero));		\
+	memset((ab)->map_one, 0xff, sizeof((ab)->map_one));		\
+} while (0)
+#define	MAPADDRENABLED(flags) \
+	(((flags) & AI_V4MAPPED) || \
+	 (((flags) & AI_V4MAPPED_CFG) && _mapped_addr_enabled()))
+
+union inx_addr {
+	struct in_addr	in_addr;
+#ifdef INET6
+	struct in6_addr	in6_addr;
+#endif
+	struct {
+		u_char	mau_zero[10];
+		u_char	mau_one[2];
+		struct in_addr mau_inaddr;
+	}		map_addr_un;
+#define	map_zero	map_addr_un.mau_zero
+#define	map_one		map_addr_un.mau_one
+#define	map_inaddr	map_addr_un.mau_inaddr
+};
+
+u_int16_t _getshort(const u_char *src);
+
+static struct	 hostent *_hpcopy(struct hostent *hp, int *errp);
+static struct	 hostent *_hpaddr(int af, const char *name, void *addr, int *errp);
+static struct	 hostent *_hpmerge(struct hostent *hp1, struct hostent *hp2, int *errp);
+#ifdef INET6
+static struct	 hostent *_hpmapv6(struct hostent *hp, int *errp);
+#endif
+static struct	 hostent *_hpsort(struct hostent *hp);
+static struct	 hostent *_ghbyname(const char *name, int af, int flags, int *errp);
+static char	*_hgetword(char **pp);
+static int	 _mapped_addr_enabled(void);
+
+static FILE	*_files_open(int *errp);
+static int	 _files_ghbyname(void *, void *, va_list);
+static int	 _files_ghbyaddr(void *, void *, va_list);
+#if 0 // keep gcc happy
+static void	 _files_shent(int stayopen);
+static void	 _files_ehent(void);
+#endif
+#ifdef YP
+static int	 _nis_ghbyname(void *, void *, va_list);
+static int	 _nis_ghbyaddr(void *, void *, va_list);
+#endif
+static int	 _dns_ghbyname(void *, void *, va_list);
+static int	 _dns_ghbyaddr(void *, void *, va_list);
+#if 0 // keep gcc happy
+static void	 _dns_shent(int stayopen);
+static void	 _dns_ehent(void);
+#endif
+
+#ifdef ICMPNL
+static int	 _icmp_ghbyaddr(void *, void *, va_list);
+#endif /* ICMPNL */
+
+/* Host lookup order if nsswitch.conf is broken or nonexistant */
+static const ns_src default_src[] = { 
+	{ NSSRC_FILES, NS_SUCCESS },
+	{ NSSRC_DNS, NS_SUCCESS },
+#ifdef ICMPNL
+#define NSSRC_ICMP "icmp"
+	{ NSSRC_ICMP, NS_SUCCESS },
+#endif
+	{ 0 }
+};
+
+/*
+ * Check if kernel supports mapped address.
+ *	implementation dependent
+ */
+#ifdef __KAME__
+#include <sys/sysctl.h>
+#endif /* __KAME__ */
+
+static int
+_mapped_addr_enabled(void)
+{
+	/* implementation dependent check */
+#if defined(__KAME__) && defined(IPV6CTL_MAPPED_ADDR)
+	int mib[4];
+	size_t len;
+	int val;
+
+	mib[0] = CTL_NET;
+	mib[1] = PF_INET6;
+	mib[2] = IPPROTO_IPV6;
+	mib[3] = IPV6CTL_MAPPED_ADDR;
+	len = sizeof(val);
+	if (__sysctl(mib, 4, &val, &len, 0, 0) == 0 && val != 0)
+		return 1;
+#endif /* __KAME__ && IPV6CTL_MAPPED_ADDR */
+	return 0;
+}
+
+/*
+ * Functions defined in RFC2553
+ *	getipnodebyname, getipnodebyaddr, freehostent
+ */
+
+static struct hostent *
+_ghbyname(const char *name, int af, int flags, int *errp)
+{
+	struct hostent *hp;
+	int rval;
+	
+	static const ns_dtab dtab[] = {
+		NS_FILES_CB(_files_ghbyname, NULL)
+		{ NSSRC_DNS, _dns_ghbyname, NULL },
+		NS_NIS_CB(_nis_ghbyname, NULL)
+		{ 0 }
+	};
+
+	if (flags & AI_ADDRCONFIG) {
+		int s;
+
+		/*
+		 * TODO:
+		 * Note that implementation dependent test for address
+		 * configuration should be done everytime called
+		 * (or apropriate interval),
+		 * because addresses will be dynamically assigned or deleted.
+		 */
+		if (af == AF_UNSPEC) {
+			if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
+				af = AF_INET;
+			else {
+				close(s);
+				if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
+					af = AF_INET6;
+				else
+				close(s);
+			}
+
+		}
+		if (af != AF_UNSPEC) {
+			if ((s = socket(af, SOCK_DGRAM, 0)) < 0)
+				return NULL;
+			close(s);
+		}
+	}
+
+	rval = nsdispatch(&hp, dtab, NSDB_HOSTS, "ghbyname", default_src,
+			  name, af, errp);
+	return (rval == NS_SUCCESS) ? hp : NULL;
+}
+
+/* getipnodebyname() internal routine for multiple query(PF_UNSPEC) support. */
+struct hostent *
+_getipnodebyname_multi(const char *name, int af, int flags, int *errp)
+{
+	struct hostent *hp;
+	union inx_addr addrbuf;
+
+	/* XXX: PF_UNSPEC is only supposed to be passed from getaddrinfo() */
+	if (af != AF_INET
+#ifdef INET6
+	    && af != AF_INET6
+#endif
+	    && af != PF_UNSPEC
+		)
+	{
+		*errp = NO_RECOVERY;
+		return NULL;
+	}
+
+#ifdef INET6
+	/* special case for literal address */
+	if (inet_pton(AF_INET6, name, &addrbuf) == 1) {
+		if (af != AF_INET6) {
+			*errp = HOST_NOT_FOUND;
+			return NULL;
+		}
+		return _hpaddr(af, name, &addrbuf, errp);
+	}
+#endif
+	if (inet_aton(name, (struct in_addr *)&addrbuf) == 1) {
+		if (af != AF_INET) {
+			if (MAPADDRENABLED(flags)) {
+				MAPADDR(&addrbuf, &addrbuf.in_addr);
+			} else {
+				*errp = HOST_NOT_FOUND;
+				return NULL;
+			}
+		}
+		return _hpaddr(af, name, &addrbuf, errp);
+	}
+
+	*errp = HOST_NOT_FOUND;
+	hp = _ghbyname(name, af, flags, errp);
+
+#ifdef INET6
+	if (af == AF_INET6
+	&&  ((flags & AI_ALL) || hp == NULL)
+	&&  (MAPADDRENABLED(flags))) {
+		struct hostent *hp2 = _ghbyname(name, AF_INET, flags, errp);
+		if (hp == NULL)
+			hp = _hpmapv6(hp2, errp);
+		else {
+			if (hp2 && strcmp(hp->h_name, hp2->h_name) != 0) {
+				freehostent(hp2);
+				hp2 = NULL;
+			}
+			hp = _hpmerge(hp, hp2, errp);
+		}
+	}
+#endif
+	return _hpsort(hp);
+}
+
+struct hostent *
+getipnodebyname(const char *name, int af, int flags, int *errp)
+{
+	if (af != AF_INET
+#ifdef INET6
+	    && af != AF_INET6
+#endif
+		)
+	{
+		*errp = NO_RECOVERY;
+		return NULL;
+	}
+	return(_getipnodebyname_multi(name, af ,flags, errp));
+}
+
+struct hostent *
+getipnodebyaddr(const void *src, size_t len, int af, int *errp)
+{
+	struct hostent *hp;
+	int rval;
+#ifdef INET6
+	struct in6_addr addrbuf;
+#else
+	struct in_addr addrbuf;
+#endif
+
+	static const ns_dtab dtab[] = {
+		NS_FILES_CB(_files_ghbyaddr, NULL)
+		{ NSSRC_DNS, _dns_ghbyaddr, NULL },
+		NS_NIS_CB(_nis_ghbyaddr, NULL)
+#ifdef ICMPNL
+		{ NSSRC_ICMP, _icmp_ghbyaddr, NULL },
+#endif
+		{ 0 }
+	};
+
+	*errp = HOST_NOT_FOUND;
+
+	switch (af) {
+	case AF_INET:
+		if (len != sizeof(struct in_addr)) {
+			*errp = NO_RECOVERY;
+			return NULL;
+		}
+		if ((long)src & ~(sizeof(struct in_addr) - 1)) {
+			memcpy(&addrbuf, src, len);
+			src = &addrbuf;
+		}
+		if (((struct in_addr *)src)->s_addr == 0)
+			return NULL;
+		break;
+#ifdef INET6
+	case AF_INET6:
+		if (len != sizeof(struct in6_addr)) {
+			*errp = NO_RECOVERY;
+			return NULL;
+		}
+		if ((long)src & ~(sizeof(struct in6_addr) / 2 - 1)) {	/*XXX*/
+			memcpy(&addrbuf, src, len);
+			src = &addrbuf;
+		}
+		if (IN6_IS_ADDR_UNSPECIFIED((struct in6_addr *)src))
+			return NULL;
+		if (IN6_IS_ADDR_V4MAPPED((struct in6_addr *)src)
+		||  IN6_IS_ADDR_V4COMPAT((struct in6_addr *)src)) {
+			src = (char *)src +
+			    (sizeof(struct in6_addr) - sizeof(struct in_addr));
+			af = AF_INET;
+			len = sizeof(struct in_addr);
+		}
+		break;
+#endif
+	default:
+		*errp = NO_RECOVERY;
+		return NULL;
+	}
+
+	rval = nsdispatch(&hp, dtab, NSDB_HOSTS, "ghbyaddr", default_src,
+			  src, len, af, errp);
+	return (rval == NS_SUCCESS) ? hp : NULL;
+}
+
+void
+freehostent(struct hostent *ptr)
+{
+	free(ptr);
+}
+
+#if 0
+
+/* XXX: should be deprecated */
+struct hostent *
+getnodebyname(const char *name, int af, int flags)
+{
+	return getipnodebyname(name, af, flags, &h_errno);
+}
+
+#ifdef __warn_references
+__warn_references(getnodebyname,
+	"warning: getnodebyname() deprecated, "
+	"should use getaddrinfo() or getipnodebyname()");
+#endif
+
+struct hostent *
+getnodebyaddr(const void *src, size_t len, int af)
+{
+	return getipnodebyaddr(src, len, af, &h_errno);
+}
+
+#ifdef __warn_references
+__warn_references(getnodebyaddr,
+	"warning: getnodebyaddr() deprecated, "
+	"should use getnameinfo() or getipnodebyaddr()");
+#endif
+
+#endif
+
+/*
+ * Private utility functions
+ */
+
+/*
+ * _hpcopy: allocate and copy hostent structure
+ */
+static struct hostent *
+_hpcopy(struct hostent *hp, int *errp)
+{
+	struct hostent *nhp;
+	char *cp, **pp;
+	int size, addrsize;
+	int nalias = 0, naddr = 0;
+	int al_off;
+	int i;
+
+	if (hp == NULL)
+		return hp;
+
+	/* count size to be allocated */
+	size = sizeof(struct hostent);
+	if (hp->h_name != NULL)
+		size += strlen(hp->h_name) + 1;
+	if ((pp = hp->h_aliases) != NULL) {
+		for (i = 0; *pp != NULL; i++, pp++) {
+			if (**pp != '\0') {
+				size += strlen(*pp) + 1;
+				nalias++;
+			}
+		}
+	}
+	/* adjust alignment */
+#ifdef	ALIGN
+	size = ALIGN(size);
+#endif
+	al_off = size;
+	size += sizeof(char *) * (nalias + 1);
+#ifdef ALIGN
+	addrsize = ALIGN(hp->h_length);
+#else
+	addrsize = hp->h_length;
+#endif
+        
+	if ((pp = hp->h_addr_list) != NULL) {
+		while (*pp++ != NULL)
+			naddr++;
+	}
+	size += addrsize * naddr;
+	size += sizeof(char *) * (naddr + 1);
+
+	/* copy */
+	if ((nhp = (struct hostent *)malloc(size)) == NULL) {
+		*errp = TRY_AGAIN;
+		return NULL;
+	}
+	cp = (char *)&nhp[1];
+	if (hp->h_name != NULL) {
+		nhp->h_name = cp;
+		strcpy(cp, hp->h_name);
+		cp += strlen(cp) + 1;
+	} else
+		nhp->h_name = NULL;
+	nhp->h_aliases = (char **)((char *)nhp + al_off);
+	if ((pp = hp->h_aliases) != NULL) {
+		for (i = 0; *pp != NULL; pp++) {
+			if (**pp != '\0') {
+				nhp->h_aliases[i++] = cp;
+				strcpy(cp, *pp);
+				cp += strlen(cp) + 1;
+			}
+		}
+	}
+	nhp->h_aliases[nalias] = NULL;
+	cp = (char *)&nhp->h_aliases[nalias + 1];
+	nhp->h_addrtype = hp->h_addrtype;
+	nhp->h_length = hp->h_length;
+	nhp->h_addr_list = (char **)cp;
+	if ((pp = hp->h_addr_list) != NULL) {
+		cp = (char *)&nhp->h_addr_list[naddr + 1];
+		for (i = 0; *pp != NULL; pp++) {
+			nhp->h_addr_list[i++] = cp;
+			memcpy(cp, *pp, hp->h_length);
+			cp += addrsize;
+		}
+	}
+	nhp->h_addr_list[naddr] = NULL;
+	return nhp;
+}
+
+/*
+ * _hpaddr: construct hostent structure with one address
+ */
+static struct hostent *
+_hpaddr(int af, const char *name, void *addr, int *errp)
+{
+	struct hostent *hp, hpbuf;
+	char *addrs[2];
+
+	hp = &hpbuf;
+	hp->h_name = (char *)name;
+	hp->h_aliases = NULL;
+	hp->h_addrtype = af;
+	hp->h_length = ADDRLEN(af);
+	hp->h_addr_list = addrs;
+	addrs[0] = (char *)addr;
+	addrs[1] = NULL;
+	return _hpcopy(hp, errp);
+}
+
+/*
+ * _hpmerge: merge 2 hostent structure, arguments will be freed
+ */
+static struct hostent *
+_hpmerge(struct hostent *hp1, struct hostent *hp2, int *errp)
+{
+	int i, j;
+	int naddr, nalias;
+	char **pp;
+	struct hostent *hp, hpbuf;
+	char *aliases[MAXALIASES + 1], *addrs[MAXADDRS + 1];
+	union inx_addr addrbuf[MAXADDRS];
+
+	if (hp1 == NULL)
+		return hp2;
+	if (hp2 == NULL)
+		return hp1;
+
+#define	HP(i)	(i == 1 ? hp1 : hp2)
+	hp = &hpbuf;
+	hp->h_name = (hp1->h_name != NULL ? hp1->h_name : hp2->h_name);
+	hp->h_aliases = aliases;
+	nalias = 0;
+	for (i = 1; i <= 2; i++) {
+		if ((pp = HP(i)->h_aliases) == NULL)
+			continue;
+		for (; nalias < MAXALIASES && *pp != NULL; pp++) {
+			/* check duplicates */
+			for (j = 0; j < nalias; j++)
+				if (strcasecmp(*pp, aliases[j]) == 0)
+					break;
+			if (j == nalias)
+				aliases[nalias++] = *pp;
+		}
+	}
+	aliases[nalias] = NULL;
+#ifdef INET6
+	if (hp1->h_length != hp2->h_length) {
+		hp->h_addrtype = AF_INET6;
+		hp->h_length = sizeof(struct in6_addr);
+	} else {
+#endif
+		hp->h_addrtype = hp1->h_addrtype;
+		hp->h_length = hp1->h_length;
+#ifdef INET6
+	}
+#endif
+	hp->h_addr_list = addrs;
+	naddr = 0;
+	for (i = 1; i <= 2; i++) {
+		if ((pp = HP(i)->h_addr_list) == NULL)
+			continue;
+		if (HP(i)->h_length == hp->h_length) {
+			while (naddr < MAXADDRS && *pp != NULL)
+				addrs[naddr++] = *pp++;
+		} else {
+			/* copy IPv4 addr as mapped IPv6 addr */
+			while (naddr < MAXADDRS && *pp != NULL) {
+				MAPADDR(&addrbuf[naddr], *pp++);
+				addrs[naddr] = (char *)&addrbuf[naddr];
+				naddr++;
+			}
+		}
+	}
+	addrs[naddr] = NULL;
+	hp = _hpcopy(hp, errp);
+	freehostent(hp1);
+	freehostent(hp2);
+	return hp;
+}
+
+/*
+ * _hpmapv6: convert IPv4 hostent into IPv4-mapped IPv6 addresses
+ */
+#ifdef INET6
+static struct hostent *
+_hpmapv6(struct hostent *hp, int *errp)
+{
+	struct hostent *hp6;
+
+	if (hp == NULL)
+		return NULL;
+	if (hp->h_addrtype == AF_INET6)
+		return hp;
+
+	/* make dummy hostent to convert IPv6 address */
+	if ((hp6 = (struct hostent *)malloc(sizeof(struct hostent))) == NULL) {
+		*errp = TRY_AGAIN;
+		return NULL;
+	}
+	hp6->h_name = NULL;
+	hp6->h_aliases = NULL;
+	hp6->h_addrtype = AF_INET6;
+	hp6->h_length = sizeof(struct in6_addr);
+	hp6->h_addr_list = NULL;
+	return _hpmerge(hp6, hp, errp);
+}
+#endif
+
+/*
+ * _hpsort: sort address by sortlist
+ */
+static struct hostent *
+_hpsort(struct hostent *hp)
+{
+	int i, j, n;
+	u_char *ap, *sp, *mp, **pp;
+	char t;
+	char order[MAXADDRS];
+	int nsort = _res.nsort;
+
+	if (hp == NULL || hp->h_addr_list[1] == NULL || nsort == 0)
+		return hp;
+	for (i = 0; (ap = (u_char *)hp->h_addr_list[i]); i++) {
+		for (j = 0; j < nsort; j++) {
+#ifdef INET6
+			if (_res_ext.sort_list[j].af != hp->h_addrtype)
+				continue;
+			sp = (u_char *)&_res_ext.sort_list[j].addr;
+			mp = (u_char *)&_res_ext.sort_list[j].mask;
+#else
+			sp = (u_char *)&_res.sort_list[j].addr;
+			mp = (u_char *)&_res.sort_list[j].mask;
+#endif
+			for (n = 0; n < hp->h_length; n++) {
+				if ((ap[n] & mp[n]) != sp[n])
+					break;
+			}
+			if (n == hp->h_length)
+				break;
+		}
+		order[i] = j;
+	}
+	n = i;
+	pp = (u_char **)hp->h_addr_list;
+	for (i = 0; i < n - 1; i++) {
+		for (j = i + 1; j < n; j++) {
+			if (order[i] > order[j]) {
+				ap = pp[i];
+				pp[i] = pp[j];
+				pp[j] = ap;
+				t = order[i];
+				order[i] = order[j];
+				order[j] = t;
+			}
+		}
+	}
+	return hp;
+}
+
+static char *
+_hgetword(char **pp)
+{
+	char c, *p, *ret;
+	const char *sp;
+	static const char sep[] = "# \t\n";
+
+	ret = NULL;
+	for (p = *pp; (c = *p) != '\0'; p++) {
+		for (sp = sep; *sp != '\0'; sp++) {
+			if (c == *sp)
+				break;
+		}
+		if (c == '#')
+			p[1] = '\0';	/* ignore rest of line */
+		if (ret == NULL) {
+			if (*sp == '\0')
+				ret = p;
+		} else {
+			if (*sp != '\0') {
+				*p++ = '\0';
+				break;
+			}
+		}
+	}
+	*pp = p;
+	if (ret == NULL || *ret == '\0')
+		return NULL;
+	return ret;
+}
+
+/*
+ * FILES (/etc/hosts)
+ */
+
+static FILE *
+_files_open(int *errp)
+{
+	FILE *fp;
+	fp = fopen(_PATH_HOSTS, "r");
+	if (fp == NULL)
+		*errp = NO_RECOVERY;
+	return fp;
+}
+
+static int
+_files_ghbyname(void *rval, void *cb_data, va_list ap)
+{
+	const char *name;
+	int af; 
+	int *errp;
+	int match, nalias;
+	char *p, *line, *addrstr, *cname;
+	FILE *fp;
+	struct hostent *rethp, *hp, hpbuf;
+	char *aliases[MAXALIASES + 1], *addrs[2];
+	union inx_addr addrbuf;
+	char buf[BUFSIZ];
+	int af0;
+
+	name = va_arg(ap, const char *);
+	af = va_arg(ap, int);
+	errp = va_arg(ap, int *);
+
+	*(struct hostent **)rval = NULL;
+
+	if ((fp = _files_open(errp)) == NULL)
+		return NS_UNAVAIL;
+	rethp = hp = NULL;
+
+	af0 = af;
+	while (fgets(buf, sizeof(buf), fp)) {
+		line = buf;
+		if ((addrstr = _hgetword(&line)) == NULL
+		||  (cname = _hgetword(&line)) == NULL)
+			continue;
+		match = (strcasecmp(cname, name) == 0);
+		nalias = 0;
+		while ((p = _hgetword(&line)) != NULL) {
+			if (!match)
+				match = (strcasecmp(p, name) == 0);
+			if (nalias < MAXALIASES)
+				aliases[nalias++] = p;
+		}
+		if (!match)
+			continue;
+		switch (af0) {
+		case AF_INET:
+			if (inet_aton(addrstr, (struct in_addr *)&addrbuf)
+			    != 1) {
+				*errp = NO_DATA;	/* name found */
+				continue;
+			}
+			af = af0;
+			break;
+#ifdef INET6
+		case AF_INET6:
+			if (inet_pton(af, addrstr, &addrbuf) != 1) {
+				*errp = NO_DATA;	/* name found */
+				continue;
+			}
+			af = af0;
+			break;
+#endif
+		case AF_UNSPEC:
+			if (inet_aton(addrstr, (struct in_addr *)&addrbuf)
+			    == 1) {
+				af = AF_INET;
+				break;
+			}
+#ifdef INET6
+			if (inet_pton(AF_INET6, addrstr, &addrbuf) == 1) {
+				af = AF_INET6;
+				break; 
+			}
+#endif
+			*errp = NO_DATA;	/* name found */
+			continue;
+			/* NOTREACHED */
+		}
+		hp = &hpbuf;
+		hp->h_name = cname;
+		hp->h_aliases = aliases;
+		aliases[nalias] = NULL;
+		hp->h_addrtype = af;
+		hp->h_length = ADDRLEN(af);
+		hp->h_addr_list = addrs;
+		addrs[0] = (char *)&addrbuf;
+		addrs[1] = NULL;
+		hp = _hpcopy(hp, errp);
+		rethp = _hpmerge(rethp, hp, errp);
+	}
+	fclose(fp);
+	*(struct hostent **)rval = rethp;
+	return (rethp != NULL) ? NS_SUCCESS : NS_NOTFOUND;
+}
+
+static int
+_files_ghbyaddr(void *rval, void *cb_data, va_list ap)
+{
+	const void *addr; 
+	int addrlen; 
+	int af; 
+	int *errp;
+	int nalias;
+	char *p, *line;
+	FILE *fp;
+	struct hostent *hp, hpbuf;
+	char *aliases[MAXALIASES + 1], *addrs[2];
+	union inx_addr addrbuf;
+	char buf[BUFSIZ];
+
+	addr = va_arg(ap, const void *);
+	addrlen = va_arg(ap, int);
+	af = va_arg(ap, int);
+	errp = va_arg(ap, int *);
+
+	*(struct hostent**)rval = NULL;
+
+	if ((fp = _files_open(errp)) == NULL)
+		return NS_UNAVAIL;
+	hp = NULL;
+	while (fgets(buf, sizeof(buf), fp)) {
+		line = buf;
+		if ((p = _hgetword(&line)) == NULL
+		||  (af == AF_INET
+		     ? inet_aton(p, (struct in_addr *)&addrbuf)
+		     : inet_pton(af, p, &addrbuf)) != 1
+		||  memcmp(addr, &addrbuf, addrlen) != 0
+		||  (p = _hgetword(&line)) == NULL)
+			continue;
+		hp = &hpbuf;
+		hp->h_name = p;
+		hp->h_aliases = aliases;
+		nalias = 0;
+		while ((p = _hgetword(&line)) != NULL) {
+			if (nalias < MAXALIASES)
+				aliases[nalias++] = p;
+		}
+		aliases[nalias] = NULL;
+		hp->h_addrtype = af;
+		hp->h_length = addrlen;
+		hp->h_addr_list = addrs;
+		addrs[0] = (char *)&addrbuf;
+		addrs[1] = NULL;
+		hp = _hpcopy(hp, errp);
+		break;
+	}
+	fclose(fp);
+	*(struct hostent **)rval = hp;
+	return (hp != NULL) ? NS_SUCCESS : NS_NOTFOUND;
+}
+
+#ifdef YP
+/*
+ * NIS
+ *
+ * XXX actually a hack, these are INET4 specific.
+ */
+static int
+_nis_ghbyname(void *rval, void *cb_data, va_list ap)
+{
+	const char *name;
+	int af;
+	int *errp;
+	struct hostent *hp = NULL;
+
+	name = va_arg(ap, const char *);
+	af = va_arg(ap, int);
+	errp = va_arg(ap, int *);
+	
+	if (af == AF_UNSPEC)
+		af = AF_INET;
+	if (af == AF_INET) {
+		hp = _gethostbynisname(name, af);
+		if (hp != NULL)
+			hp = _hpcopy(hp, errp);
+	}
+	
+	*(struct hostent **)rval = hp;
+	return (hp != NULL) ? NS_SUCCESS : NS_NOTFOUND;
+	
+}
+
+static int
+_nis_ghbyaddr(void *rval, void *cb_data, va_list ap)
+{
+	const void *addr;
+	int addrlen;
+	int af;
+	int *errp;
+	struct hostent *hp = NULL;
+
+	addr = va_arg(ap, const void *);
+	addrlen = va_arg(ap, int);
+	af = va_arg(ap, int);
+
+	if (af == AF_INET) {
+		hp = _gethostbynisaddr(addr, addrlen, af);
+		if (hp != NULL)
+			hp = _hpcopy(hp, errp);
+	}
+	*(struct hostent **)rval = hp;
+	return (hp != NULL) ? NS_SUCCESS : NS_NOTFOUND;
+}
+#endif
+typedef struct __res_type_list res_type_list;
+
+struct __res_type_list {
+        res_type_list * rtl_entry;
+        int     rtl_type;
+};
+
+#if PACKETSZ > 1024
+#define	MAXPACKET	PACKETSZ
+#else
+#define	MAXPACKET	1024
+#endif
+
+typedef union {
+	HEADER hdr;
+	u_char buf[MAXPACKET];
+} querybuf;
+
+static struct hostent *getanswer(const querybuf *, int, const char *, int,
+	    struct hostent *, int *);
+
+/*
+ * we don't need to take care about sorting, nor IPv4 mapped address here.
+ */
+static struct hostent *
+getanswer(answer, anslen, qname, qtype, template, errp)
+	const querybuf *answer;
+	int anslen;
+	const char *qname;
+	int qtype;
+	struct hostent *template;
+	int *errp;
+{
+	const HEADER *hp;
+	const u_char *cp;
+	int n;
+	const u_char *eom, *erdata;
+	char *bp, **ap, **hap;
+	int type, class, buflen, ancount, qdcount;
+	int haveanswer, had_error;
+	char tbuf[MAXDNAME];
+	const char *tname;
+	int (*name_ok)(const char *);
+	static char *h_addr_ptrs[MAXADDRS + 1];
+	static char *host_aliases[MAXALIASES];
+	static char hostbuf[8*1024];
+
+#define BOUNDED_INCR(x) \
+	do { \
+		cp += x; \
+		if (cp > eom) { \
+			*errp = NO_RECOVERY; \
+			return (NULL); \
+		} \
+	} while (0)
+
+#define BOUNDS_CHECK(ptr, count) \
+	do { \
+		if ((ptr) + (count) > eom) { \
+			*errp = NO_RECOVERY; \
+			return (NULL); \
+		} \
+	} while (0)
+
+/* XXX do {} while (0) cannot be put here */
+#define DNS_ASSERT(x) \
+	{				\
+		if (!(x)) {		\
+			cp += n;	\
+			continue;	\
+		}			\
+	}
+
+/* XXX do {} while (0) cannot be put here */
+#define DNS_FATAL(x) \
+	{				\
+		if (!(x)) {		\
+			had_error++;	\
+			continue;	\
+		}			\
+	}
+
+	tname = qname;
+	template->h_name = NULL;
+	eom = answer->buf + anslen;
+	switch (qtype) {
+	case T_A:
+	case T_AAAA:
+		name_ok = res_hnok;
+		break;
+	case T_PTR:
+		name_ok = res_dnok;
+		break;
+	default:
+		return (NULL);	/* XXX should be abort(); */
+	}
+	/*
+	 * find first satisfactory answer
+	 */
+	hp = &answer->hdr;
+	ancount = ntohs(hp->ancount);
+	qdcount = ntohs(hp->qdcount);
+	bp = hostbuf;
+	buflen = sizeof hostbuf;
+	cp = answer->buf;
+	BOUNDED_INCR(HFIXEDSZ);
+	if (qdcount != 1) {
+		*errp = NO_RECOVERY;
+		return (NULL);
+	}
+	n = dn_expand(answer->buf, eom, cp, bp, buflen);
+	if ((n < 0) || !(*name_ok)(bp)) {
+		*errp = NO_RECOVERY;
+		return (NULL);
+	}
+	BOUNDED_INCR(n + QFIXEDSZ);
+	if (qtype == T_A || qtype == T_AAAA) {
+		/* res_send() has already verified that the query name is the
+		 * same as the one we sent; this just gets the expanded name
+		 * (i.e., with the succeeding search-domain tacked on).
+		 */
+		n = strlen(bp) + 1;		/* for the \0 */
+		if (n >= MAXHOSTNAMELEN) {
+			*errp = NO_RECOVERY;
+			return (NULL);
+		}
+		template->h_name = bp;
+		bp += n;
+		buflen -= n;
+		/* The qname can be abbreviated, but h_name is now absolute. */
+		qname = template->h_name;
+	}
+	ap = host_aliases;
+	*ap = NULL;
+	template->h_aliases = host_aliases;
+	hap = h_addr_ptrs;
+	*hap = NULL;
+	template->h_addr_list = h_addr_ptrs;
+	haveanswer = 0;
+	had_error = 0;
+	while (ancount-- > 0 && cp < eom && !had_error) {
+		n = dn_expand(answer->buf, eom, cp, bp, buflen);
+		DNS_FATAL(n >= 0);
+		DNS_FATAL((*name_ok)(bp));
+		cp += n;			/* name */
+		BOUNDS_CHECK(cp, 3 * INT16SZ + INT32SZ);
+		type = _getshort(cp);
+ 		cp += INT16SZ;			/* type */
+		class = _getshort(cp);
+ 		cp += INT16SZ + INT32SZ;	/* class, TTL */
+		n = _getshort(cp);
+		cp += INT16SZ;			/* len */
+		BOUNDS_CHECK(cp, n);
+		erdata = cp + n;
+		DNS_ASSERT(class == C_IN);
+		if ((qtype == T_A || qtype == T_AAAA) && type == T_CNAME) {
+			if (ap >= &host_aliases[MAXALIASES-1])
+				continue;
+			n = dn_expand(answer->buf, eom, cp, tbuf, sizeof tbuf);
+			DNS_FATAL(n >= 0);
+			DNS_FATAL((*name_ok)(tbuf));
+			cp += n;
+			if (cp != erdata) {
+				*errp = NO_RECOVERY;
+				return (NULL);
+			}
+			/* Store alias. */
+			*ap++ = bp;
+			n = strlen(bp) + 1;	/* for the \0 */
+			DNS_FATAL(n < MAXHOSTNAMELEN);
+			bp += n;
+			buflen -= n;
+			/* Get canonical name. */
+			n = strlen(tbuf) + 1;	/* for the \0 */
+			DNS_FATAL(n <= buflen);
+			DNS_FATAL(n < MAXHOSTNAMELEN);
+			strcpy(bp, tbuf);
+			template->h_name = bp;
+			bp += n;
+			buflen -= n;
+			continue;
+		}
+		if (qtype == T_PTR && type == T_CNAME) {
+			n = dn_expand(answer->buf, eom, cp, tbuf, sizeof tbuf);
+			if (n < 0 || !res_dnok(tbuf)) {
+				had_error++;
+				continue;
+			}
+			cp += n;
+			if (cp != erdata) {
+				*errp = NO_RECOVERY;
+				return (NULL);
+			}
+			/* Get canonical name. */
+			n = strlen(tbuf) + 1;	/* for the \0 */
+			if (n > buflen || n >= MAXHOSTNAMELEN) {
+				had_error++;
+				continue;
+			}
+			strcpy(bp, tbuf);
+			tname = bp;
+			bp += n;
+			buflen -= n;
+			continue;
+		}
+		DNS_ASSERT(type == qtype);
+		switch (type) {
+		case T_PTR:
+			DNS_ASSERT(strcasecmp(tname, bp) == 0);
+			n = dn_expand(answer->buf, eom, cp, bp, buflen);
+			DNS_FATAL(n >= 0);
+			DNS_FATAL(res_hnok(bp));
+#if MULTI_PTRS_ARE_ALIASES
+			cp += n;
+			if (cp != erdata) {
+				*errp = NO_RECOVERY;
+				return (NULL);
+			}
+			if (!haveanswer)
+				template->h_name = bp;
+			else if (ap < &host_aliases[MAXALIASES-1])
+				*ap++ = bp;
+			else
+				n = -1;
+			if (n != -1) {
+				n = strlen(bp) + 1;	/* for the \0 */
+				if (n >= MAXHOSTNAMELEN) {
+					had_error++;
+					break;
+				}
+				bp += n;
+				buflen -= n;
+			}
+			break;
+#else
+			template->h_name = bp;
+			*errp = NETDB_SUCCESS;
+			return (template);
+#endif
+		case T_A:
+		case T_AAAA:
+			DNS_ASSERT(strcasecmp(template->h_name, bp) == 0);
+			DNS_ASSERT(n == template->h_length);
+			if (!haveanswer) {
+				int nn;
+
+				template->h_name = bp;
+				nn = strlen(bp) + 1;	/* for the \0 */
+				bp += nn;
+				buflen -= nn;
+			}
+#ifdef ALIGN
+			bp = (char *)ALIGN(bp);
+#else
+			bp = (char *)(bp);
+#endif
+
+			DNS_FATAL(bp + n < &hostbuf[sizeof hostbuf]);
+			DNS_ASSERT(hap < &h_addr_ptrs[MAXADDRS-1]);
+#ifdef FILTER_V4MAPPED
+			if (type == T_AAAA) {
+				struct in6_addr in6;
+				memcpy(&in6, cp, sizeof(in6));
+				DNS_ASSERT(IN6_IS_ADDR_V4MAPPED(&in6) == 0);
+			}
+#endif
+			bcopy(cp, *hap++ = bp, n);
+			bp += n;
+			buflen -= n;
+			cp += n;
+			if (cp != erdata) {
+				*errp = NO_RECOVERY;
+				return (NULL);
+			}
+			break;
+		default:
+			abort();
+		}
+		if (!had_error)
+			haveanswer++;
+	}
+	if (haveanswer) {
+		*ap = NULL;
+		*hap = NULL;
+		if (!template->h_name) {
+			n = strlen(qname) + 1;	/* for the \0 */
+			if (n > buflen || n >= MAXHOSTNAMELEN)
+				goto no_recovery;
+			strcpy(bp, qname);
+			template->h_name = bp;
+			bp += n;
+			buflen -= n;
+		}
+		*errp = NETDB_SUCCESS;
+		return (template);
+	}
+ no_recovery:
+	*errp = NO_RECOVERY;
+	return (NULL);
+
+#undef BOUNDED_INCR
+#undef BOUNDS_CHECK
+#undef DNS_ASSERT
+#undef DNS_FATAL
+}
+
+/* res_search() variant with multiple query support. */
+static struct hostent *
+_res_search_multi(name, rtl, errp)
+	const char *name;	/* domain name */
+	struct	__res_type_list *rtl; /* list of query types */
+	int *errp;
+{
+	const char *cp, * const *domain;
+	struct hostent *hp0 = NULL, *hp;
+	struct hostent hpbuf;
+	u_int dots;
+	int trailing_dot, ret, saved_herrno;
+	int got_nodata = 0, got_servfail = 0, tried_as_is = 0;
+	struct __res_type_list *rtl0 = rtl;
+	querybuf buf;
+
+	if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
+		*errp = NETDB_INTERNAL;
+		return (NULL);
+	}
+	dots = 0;
+	for (cp = name; *cp; cp++)
+		dots += (*cp == '.');
+	trailing_dot = 0;
+	if (cp > name && *--cp == '.')
+		trailing_dot++;
+
+	/* If there aren't any dots, it could be a user-level alias */
+	if (!dots && (cp = hostalias(name)) != NULL) {
+		for(rtl = rtl0; rtl != NULL;
+		    rtl = rtl->rtl_entry) {
+			ret = res_query(cp, C_IN, rtl->rtl_type, buf.buf,
+					     sizeof(buf.buf));
+			if (ret > 0) {
+				hpbuf.h_addrtype = (rtl->rtl_type == T_AAAA)
+				    ? AF_INET6 : AF_INET;
+				hpbuf.h_length = ADDRLEN(hpbuf.h_addrtype);
+				hp = getanswer(&buf, ret, name, rtl->rtl_type,
+						    &hpbuf, errp);
+				if (!hp)
+					continue;
+				hp = _hpcopy(&hpbuf, errp);
+				hp0 = _hpmerge(hp0, hp, errp);
+			}
+		}
+		return (hp0);
+	}
+
+	/*
+	 * If there are dots in the name already, let's just give it a try
+	 * 'as is'.  The threshold can be set with the "ndots" option.
+	 */
+	saved_herrno = -1;
+	if (dots >= _res.ndots) {
+		for(rtl = rtl0; rtl != NULL;
+		    rtl = rtl->rtl_entry) {
+			ret = res_querydomain(name, NULL, C_IN, rtl->rtl_type,
+					      buf.buf, sizeof(buf.buf));
+			if (ret > 0) {
+				hpbuf.h_addrtype = (rtl->rtl_type == T_AAAA)
+				    ? AF_INET6 : AF_INET;
+				hpbuf.h_length = ADDRLEN(hpbuf.h_addrtype);
+				hp = getanswer(&buf, ret, name, rtl->rtl_type,
+						    &hpbuf, errp);
+				if (!hp)
+					continue;
+				hp = _hpcopy(&hpbuf, errp);
+				hp0 = _hpmerge(hp0, hp, errp);
+			}
+		}
+		if (hp0 != NULL)
+			return (hp0);
+		saved_herrno = *errp;
+		tried_as_is++;
+	}
+
+	/*
+	 * We do at least one level of search if
+	 *	- there is no dot and RES_DEFNAME is set, or
+	 *	- there is at least one dot, there is no trailing dot,
+	 *	  and RES_DNSRCH is set.
+	 */
+	if ((!dots && (_res.options & RES_DEFNAMES)) ||
+	    (dots && !trailing_dot && (_res.options & RES_DNSRCH))) {
+		int done = 0;
+
+		for (domain = (const char * const *)_res.dnsrch;
+		     *domain && !done;
+		     domain++) {
+
+			for(rtl = rtl0; rtl != NULL;
+			    rtl = rtl->rtl_entry) {
+				ret = res_querydomain(name, *domain, C_IN,
+						      rtl->rtl_type,
+						      buf.buf, sizeof(buf.buf));
+				if (ret > 0) {
+					hpbuf.h_addrtype = (rtl->rtl_type == T_AAAA)
+					    ? AF_INET6 : AF_INET;
+					hpbuf.h_length = ADDRLEN(hpbuf.h_addrtype);
+					hp = getanswer(&buf, ret, name,
+					    rtl->rtl_type, &hpbuf, errp);
+					if (!hp)
+						continue;
+					hp = _hpcopy(&hpbuf, errp);
+					hp0 = _hpmerge(hp0, hp, errp);
+				}
+			}
+			if (hp0 != NULL)
+				return (hp0);
+
+			/*
+			 * If no server present, give up.
+			 * If name isn't found in this domain,
+			 * keep trying higher domains in the search list
+			 * (if that's enabled).
+			 * On a NO_DATA error, keep trying, otherwise
+			 * a wildcard entry of another type could keep us
+			 * from finding this entry higher in the domain.
+			 * If we get some other error (negative answer or
+			 * server failure), then stop searching up,
+			 * but try the input name below in case it's
+			 * fully-qualified.
+			 */
+			if (errno == ECONNREFUSED) {
+				*errp = TRY_AGAIN;
+				return (NULL);
+			}
+
+			switch (*errp) {
+			case NO_DATA:
+				got_nodata++;
+				/* FALLTHROUGH */
+			case HOST_NOT_FOUND:
+				/* keep trying */
+				break;
+			case TRY_AGAIN:
+				if (buf.hdr.rcode == SERVFAIL) {
+					/* try next search element, if any */
+					got_servfail++;
+					break;
+				}
+				/* FALLTHROUGH */
+			default:
+				/* anything else implies that we're done */
+				done++;
+			}
+
+			/* if we got here for some reason other than DNSRCH,
+			 * we only wanted one iteration of the loop, so stop.
+			 */
+			if (!(_res.options & RES_DNSRCH))
+				done++;
+		}
+	}
+
+	/*
+	 * If we have not already tried the name "as is", do that now.
+	 * note that we do this regardless of how many dots were in the
+	 * name or whether it ends with a dot unless NOTLDQUERY is set.
+	 */
+	if (!tried_as_is && (dots || !(_res.options & RES_NOTLDQUERY))) {
+		for(rtl = rtl0; rtl != NULL;
+		    rtl = rtl->rtl_entry) {
+			ret = res_querydomain(name, NULL, C_IN, rtl->rtl_type,
+					      buf.buf, sizeof(buf.buf));
+			if (ret > 0) {
+				hpbuf.h_addrtype = (rtl->rtl_type == T_AAAA)
+				    ? AF_INET6 : AF_INET;
+				hpbuf.h_length = ADDRLEN(hpbuf.h_addrtype);
+				hp = getanswer(&buf, ret, name, rtl->rtl_type,
+				    &hpbuf, errp);
+				if (!hp)
+					continue;
+				hp = _hpcopy(&hpbuf, errp);
+				hp0 = _hpmerge(hp0, hp, errp);
+			}
+		}
+		if (hp0 != NULL)
+			return (hp0);
+	}
+
+	/* if we got here, we didn't satisfy the search.
+	 * if we did an initial full query, return that query's h_errno
+	 * (note that we wouldn't be here if that query had succeeded).
+	 * else if we ever got a nodata, send that back as the reason.
+	 * else send back meaningless h_errno, that being the one from
+	 * the last DNSRCH we did.
+	 */
+	if (saved_herrno != -1)
+		*errp = saved_herrno;
+	else if (got_nodata)
+		*errp = NO_DATA;
+	else if (got_servfail)
+		*errp = TRY_AGAIN;
+	return (NULL);
+}
+
+static int
+_dns_ghbyname(void *rval, void *cb_data, va_list ap)
+{
+	const char *name;
+	int af;
+	int *errp;
+	res_type_list *rtl, rtl4;
+#ifdef INET6
+	res_type_list rtl6;
+#endif
+
+	name = va_arg(ap, const char *);
+	af = va_arg(ap, int);
+	errp = va_arg(ap, int *);
+
+#ifdef INET6
+	switch (af) {
+	case AF_UNSPEC:
+		&rtl4->rtl_entry = NULL; rtl4.rtl_type = T_A;
+		&rtl6->rtl_entry = &rtl4; rtl6.rtl_type = T_AAAA;
+		rtl = &rtl6;
+		break;
+	case AF_INET6:
+		&rtl6->rtl_entry = NULL; rtl6.rtl_type = T_AAAA;
+		rtl = &rtl6;
+		break;
+	case AF_INET:
+		&rtl4->rtl_entry = NULL; rtl4.rtl_type = T_A;
+		rtl = &rtl4;
+		break;
+	}
+#else
+	(&rtl4)->rtl_entry = NULL;
+        rtl4.rtl_type = T_A;
+	rtl = &rtl4;
+#endif
+	*(struct hostent **)rval = _res_search_multi(name, rtl, errp);
+	return (*(struct hostent **)rval != NULL) ? NS_SUCCESS : NS_NOTFOUND;
+}
+
+static int
+_dns_ghbyaddr(void *rval, void *cb_data, va_list ap)
+{
+	const void *addr;
+	int addrlen;
+	int af;
+	int *errp;
+	int n;
+	struct hostent *hp;
+	u_char c, *cp;
+	char *bp;
+	struct hostent hbuf;
+	int na;
+#ifdef INET6
+	static const char hex[] = "0123456789abcdef";
+#endif
+	querybuf buf;
+	char qbuf[MAXDNAME+1];
+	char *hlist[2];
+
+	addr = va_arg(ap, const void *);
+	addrlen = va_arg(ap, int);
+	af = va_arg(ap, int);
+	errp = va_arg(ap, int *);
+
+	*(struct hostent **)rval = NULL;
+
+#ifdef INET6
+	/* XXX */
+	if (af == AF_INET6 && IN6_IS_ADDR_LINKLOCAL((struct in6_addr *)addr))
+		return NS_NOTFOUND;
+#endif
+
+	if ((_res.options & RES_INIT) == 0) {
+		if (res_init() < 0) {
+			*errp = h_errno;
+			return NS_UNAVAIL;
+		}
+	}
+	memset(&hbuf, 0, sizeof(hbuf));
+	hbuf.h_name = NULL;
+	hbuf.h_addrtype = af;
+	hbuf.h_length = addrlen;
+	na = 0;
+
+	/* XXX assumes that MAXDNAME is big enough */
+	n = 0;
+	bp = qbuf;
+	cp = (u_char *)addr+addrlen-1;
+	switch (af) {
+#ifdef INET6
+	case AF_INET6:
+		for (; n < addrlen; n++, cp--) {
+			c = *cp;
+			*bp++ = hex[c & 0xf];
+			*bp++ = '.';
+			*bp++ = hex[c >> 4];
+			*bp++ = '.';
+		}
+		strcpy(bp, "ip6.int");
+		break;
+#endif
+	default:
+		for (; n < addrlen; n++, cp--) {
+			c = *cp;
+			if (c >= 100)
+				*bp++ = '0' + c / 100;
+			if (c >= 10)
+				*bp++ = '0' + (c % 100) / 10;
+			*bp++ = '0' + c % 10;
+			*bp++ = '.';
+		}
+		strcpy(bp, "in-addr.arpa");
+		break;
+	}
+
+	n = res_query(qbuf, C_IN, T_PTR, buf.buf, sizeof buf.buf);
+	if (n < 0) {
+		*errp = h_errno;
+		return NS_UNAVAIL;
+	}
+	hp = getanswer(&buf, n, qbuf, T_PTR, &hbuf, errp);
+	if (!hp)
+		return NS_NOTFOUND;
+	hbuf.h_addrtype = af;
+	hbuf.h_length = addrlen;
+	hbuf.h_addr_list = hlist;
+	hlist[0] = (char *)addr;
+	hlist[1] = NULL;
+	*(struct hostent **)rval = _hpcopy(&hbuf, errp);
+	return NS_SUCCESS;
+}
+
+#if 0 // keep gcc happy
+static void
+_dns_shent(int stayopen)
+{
+	if ((_res.options & RES_INIT) == 0) {
+		if (res_init() < 0)
+			return;
+	}
+	if (stayopen)
+		_res.options |= RES_STAYOPEN | RES_USEVC;
+}
+
+static void
+_dns_ehent(void)
+{
+	_res.options &= ~(RES_STAYOPEN | RES_USEVC);
+	res_close();
+}
+#endif
+
+#ifdef ICMPNL
+
+/*
+ * experimental:
+ *	draft-ietf-ipngwg-icmp-namelookups-02.txt
+ *	ifindex is assumed to be encoded in addr.
+ */
+#include <sys/uio.h>
+#include <netinet/ip6.h>
+#include <netinet/icmp6.h>
+
+struct _icmp_host_cache {
+	struct _icmp_host_cache *hc_next;
+	int hc_ifindex;
+	struct in6_addr hc_addr;
+	char *hc_name;
+};
+
+static char *
+_icmp_fqdn_query(const struct in6_addr *addr, int ifindex)
+{
+	int s;
+	struct icmp6_filter filter;
+	struct msghdr msg;
+	struct cmsghdr *cmsg;
+	struct in6_pktinfo *pkt;
+	char cbuf[256];
+	char buf[1024];
+	int cc;
+	struct icmp6_fqdn_query *fq;
+	struct icmp6_fqdn_reply *fr;
+	struct _icmp_host_cache *hc;
+	struct sockaddr_in6 sin6;
+	struct iovec iov;
+	fd_set s_fds, fds;
+	struct timeval tout;
+	int len;
+	char *name;
+	static int pid;
+	static struct _icmp_host_cache *hc_head;
+
+	for (hc = hc_head; hc; hc = hc->hc_next) {
+		if (hc->hc_ifindex == ifindex
+		&&  IN6_ARE_ADDR_EQUAL(&hc->hc_addr, addr))
+			return hc->hc_name;
+	}
+
+	if (pid == 0)
+		pid = getpid();
+
+	ICMP6_FILTER_SETBLOCKALL(&filter);
+	ICMP6_FILTER_SETPASS(ICMP6_FQDN_REPLY, &filter);
+
+	FD_ZERO(&s_fds);
+	tout.tv_sec = 0;
+	tout.tv_usec = 200000;	/*XXX: 200ms*/
+
+	fq = (struct icmp6_fqdn_query *)buf;
+	fq->icmp6_fqdn_type = ICMP6_FQDN_QUERY;
+	fq->icmp6_fqdn_code = 0;
+	fq->icmp6_fqdn_cksum = 0;
+	fq->icmp6_fqdn_id = (u_short)pid;
+	fq->icmp6_fqdn_unused = 0;
+	fq->icmp6_fqdn_cookie[0] = 0;
+	fq->icmp6_fqdn_cookie[1] = 0;
+
+	memset(&sin6, 0, sizeof(sin6));
+	sin6.sin6_family = AF_INET6;
+	sin6.sin6_addr = *addr;
+
+	memset(&msg, 0, sizeof(msg));
+	msg.msg_name = (caddr_t)&sin6;
+	msg.msg_namelen = sizeof(sin6);
+	msg.msg_iov = &iov;
+	msg.msg_iovlen = 1;
+	msg.msg_control = NULL;
+	msg.msg_controllen = 0;
+	iov.iov_base = (caddr_t)buf;
+	iov.iov_len = sizeof(struct icmp6_fqdn_query);
+
+	if (ifindex) {
+		msg.msg_control = cbuf;
+		msg.msg_controllen = sizeof(cbuf);
+		cmsg = CMSG_FIRSTHDR(&msg);
+		cmsg->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
+		cmsg->cmsg_level = IPPROTO_IPV6;
+		cmsg->cmsg_type = IPV6_PKTINFO;
+		pkt = (struct in6_pktinfo *)&cmsg[1];
+		memset(&pkt->ipi6_addr, 0, sizeof(struct in6_addr));
+		pkt->ipi6_ifindex = ifindex;
+		cmsg = CMSG_NXTHDR(&msg, cmsg);
+		msg.msg_controllen = (char *)cmsg - cbuf;
+	}
+
+	if ((s = socket(PF_INET6, SOCK_RAW, IPPROTO_ICMPV6)) < 0)
+		return NULL;
+	(void)setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER,
+			 (char *)&filter, sizeof(filter));
+	cc = _sendmsg(s, &msg, 0);
+	if (cc < 0) {
+		close(s);
+		return NULL;
+	}
+	FD_SET(s, &s_fds);
+	for (;;) {
+		fds = s_fds;
+		if (select(s + 1, &fds, NULL, NULL, &tout) <= 0) {
+			close(s);
+			return NULL;
+		}
+		len = sizeof(sin6);
+		cc = _recvfrom(s, buf, sizeof(buf), 0,
+			      (struct sockaddr *)&sin6, &len);
+		if (cc <= 0) {
+			close(s);
+			return NULL;
+		}
+		if (cc < sizeof(struct ip6_hdr) + sizeof(struct icmp6_hdr))
+			continue;
+		if (!IN6_ARE_ADDR_EQUAL(addr, &sin6.sin6_addr))
+			continue;
+		fr = (struct icmp6_fqdn_reply *)(buf + sizeof(struct ip6_hdr));
+		if (fr->icmp6_fqdn_type == ICMP6_FQDN_REPLY)
+			break;
+	}
+	close(s);
+	if (fr->icmp6_fqdn_cookie[1] != 0) {
+		/* rfc1788 type */
+		name = buf + sizeof(struct ip6_hdr) + sizeof(struct icmp6_hdr) + 4;
+		len = (buf + cc) - name;
+	} else {
+		len = fr->icmp6_fqdn_namelen;
+		name = fr->icmp6_fqdn_name;
+	}
+	if (len <= 0)
+		return NULL;
+	name[len] = 0;
+
+	if ((hc = (struct _icmp_host_cache *)malloc(sizeof(*hc))) == NULL)
+		return NULL;
+	/* XXX: limit number of cached entries */
+	hc->hc_ifindex = ifindex;
+	hc->hc_addr = *addr;
+	hc->hc_name = strdup(name);
+	hc->hc_next = hc_head;
+	hc_head = hc;
+	return hc->hc_name;
+}
+
+static struct hostent *
+_icmp_ghbyaddr(const void *addr, int addrlen, int af, int *errp)
+{
+	char *hname;
+	int ifindex;
+	struct in6_addr addr6;
+
+	if (af != AF_INET6) {
+		/*
+		 * Note: rfc1788 defines Who Are You for IPv4,
+		 * but no one implements it.
+		 */
+		return NULL;
+	}
+
+	memcpy(&addr6, addr, addrlen);
+	ifindex = (addr6.s6_addr[2] << 8) | addr6.s6_addr[3];
+	addr6.s6_addr[2] = addr6.s6_addr[3] = 0;
+
+	if (!IN6_IS_ADDR_LINKLOCAL(&addr6))
+		return NULL;	/*XXX*/
+
+	if ((hname = _icmp_fqdn_query(&addr6, ifindex)) == NULL)
+		return NULL;
+	return _hpaddr(af, hname, &addr6, errp);
+}
+#endif /* ICMPNL */