Date: Fri, 18 Jul 1997 19:35:48 +0200 (CEST) From: Andre Albsmeier <Andre.Albsmeier@mchp.siemens.de> To: freebsd-stable@freebsd.org Subject: libc changes make ypserv unimpossible to resolve hostname Message-ID: <199707181735.TAA00905@curry.mchp.siemens.de>
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Hi,
I posted the part below to -hackers but nobody answered me. Maybe this
is the right place, since the problem occurs on 2.2-STABLE...
Thanks very much
-Andre
-------------------- post to -hackers ----------------------
Hi,
when running "ypserv -n" on 2.2-STABLE it is no longer possible for ypserv
to resolve hostnames which are not fully qualified. This is due to a change in
lib/libc/net/gethostbydns.c which now returns as h_errno NO_RECOVERY instead
of TRY_AGAIN. I have implemented an additional debugline which shows this effect
in usr.sbin/ypserv/yp_dnslookup.c.
I don't know where it should be changed; in gethostbydns.c or in yp_dnslookup.c...
Thanks
-Andre
---------------------------------------------------------------------------------
running "ypserv -d -n" using NEW lib/libc/net/gethostbydns.c and querying
for host "pcauth" on PC-NFS client:
root@server:/usr/src/usr.sbin/ypserv>./ypserv -d -n
;; res_setoptions("debug", "env")..
;; debug
ypserv: Procedure ypproc_domain called from 192.168.21.143:1500
ypserv: Procedure ypproc_match called from 192.168.21.143:1500
ypserv: Client is referencing map "hosts.byname".
ypserv: Looking up key [pcauth]
ypserv: Doing DNS lookup of pcauth
;; res_mkquery(0, pcauth, 1, 1)
ypserv: Queueing async DNS name lookup (399)
ypserv: Running dns queue
ypserv: Got dns reply from 192.168.16.33
ypserv: ypserv h_errno = 3
|
This is NO_RECOVERY------+
ypserv: Sending dns reply to 192.168.21.143 (399)
ypserv: Running dns queue
ypserv: Running dns queue
---------------------------------------------------------------------------------
running "ypserv -d -n" using OLD lib/libc/net/gethostbydns.c and querying
for host "pcauth" on PC-NFS client:
root@server:/usr/src/usr.sbin/ypserv>./ypserv -d -n
;; res_setoptions("debug", "env")..
;; debug
ypserv: Procedure ypproc_domain called from 192.168.21.143:1500
ypserv: Procedure ypproc_match called from 192.168.21.143:1500
ypserv: Client is referencing map "hosts.byname".
ypserv: Looking up key [pcauth]
ypserv: Doing DNS lookup of pcauth
;; res_mkquery(0, pcauth, 1, 1)
ypserv: Queueing async DNS name lookup (45885)
ypserv: Running dns queue
ypserv: Got dns reply from 192.168.16.33
ypserv: ypserv h_errno = 2
|
This is TRY_AGAIN -------+
ypserv: Retrying with: pcauth.us.tld
;; res_mkquery(0, pcauth.us.tld, 1, 1)
ypserv: Running dns queue
ypserv: Running dns queue
ypserv: Got dns reply from 192.168.16.33
ypserv: Sending dns reply to 192.168.21.143 (45886)
ypserv: Running dns queue
ypserv: Running dns queue
ypserv: Running dns queue
ypserv: Procedure ypproc_match called from 192.168.21.143:1500
ypserv: Client is referencing map "hosts.byname".
ypserv: Looking up key [printfix.us.tld]
ypserv: Doing DNS lookup of printfix.us.tld
;; res_mkquery(0, printfix.us.tld, 1, 1)
ypserv: Queueing async DNS name lookup (45887)
ypserv: Running dns queue
ypserv: Got dns reply from 192.168.16.33
ypserv: Sending dns reply to 192.168.21.143 (45887)
g
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