Date: Wed, 21 Apr 2004 08:41:09 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: "Jin Guojun [NCS]" <j_guojun@lbl.gov> Cc: questions@freebsd.org Subject: Re: what things can cause yppasswd failure? Message-ID: <20040421074109.GA41275@happy-idiot-talk.infracaninophile.co.uk> In-Reply-To: <40859A57.68F03A90@lbl.gov> References: <4085889D.C5EA07D7@lbl.gov> <40859A57.68F03A90@lbl.gov>
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On Tue, Apr 20, 2004 at 02:47:03PM -0700, Jin Guojun [NCS] wrote:
> "Jin Guojun [NCS]" wrote:
>=20
> > We have experience very strange problem on using NIS over FreeBSD 4.x a=
nd 5.x.
> > Some uses can change passwd where other users cannot.
> >
> > case 1: Use FreeBSD 5.1 as NIS server -- NIS client is a FreeBSD 4.9=
host
> > I can change my passwd any time and any where, and most people cannot.
> > If I change my home directory to anywhere else in the master.passwd fil=
e,
> > re-make in /var/yp directory, then I cannot change my passwd any more.
> > It causes yppasswdd dying on signal 11, which most users encountered.
> >
> > case 2: Use FreeBSD 4.10-BETA as NIS server -- same NIS client
> > I have no problem to change passwd, other users do. Failure will not
> > kill yppasswdd, but it returns following error:
> >
> > passwd: failed to change NIS password: RPC: Server can't decode argumen=
ts
> >
> > After this message I still can change my passwd. Also, changing my home
> > directory in /var/yp/master.passwd and re-making DO NOT AFFECT
> > me to change passwd.
>=20
> By searching mail archive, I did not find related problem.
> This is what we found:
>=20
> If users login with bash, these users are not able to change their pa=
sswd.
> The error is:
>=20
> passwd: failed to change NIS password: RPC: Server can't decode argum=
ents
>=20
> Probably bash is not part of default FreeBSD syste, NIS system has not be=
en
> tested
> with bash for changing password.
Interesting: nice work deducing that. This is clearly a bug --
certainly if rpc.yppasswdd dies with a SEGV, which should never
happen. Please do report this problem via send-pr(1).
However, I think there must be something different about your systems,
as bash(1) is a popular shell and if this was a general problem I
should think someone would have complained about it by now.
Does this apply to other shells than bash -- eg zsh(1), ksh(1)?
Does using the '-v' (verbose logging) flag on rpc.yppasswdd get you
any more information?
Does this still apply if there's an entry for bash in /etc/shells on
the NIS server?
Cheers,
Matthew
--=20
Dr Matthew J Seaman MA, D.Phil. 26 The Paddocks
Savill Way
PGP: http://www.infracaninophile.co.uk/pgpkey Marlow
Tel: +44 1628 476614 Bucks., SL7 1TH UK
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