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Date:	Wed, 9 Jul 2014 12:12:56 +0200
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: timeout in LDAP access
Message-ID:	<20140709101256.GD26447@calimero.vinschen.de>
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References:	<FEEBC1A4-B147-45C1-A5AC-F5B9108E998F AT Denis-Excoffier DOT org> <20140623090959 DOT GA1803 AT calimero DOT vinschen DOT de> <C2FB35D9-AE47-4461-8A94-20605D5EB996 AT Denis-Excoffier DOT org> <20140624155851 DOT GJ1803 AT calimero DOT vinschen DOT de> <20140625101526 DOT GO1803 AT calimero DOT vinschen DOT de> <E760D646-FFCB-434C-B990-7783DC011326 AT Denis-Excoffier DOT org> <20140625211355 DOT GA25116 AT calimero DOT vinschen DOT de> <E3509AAC-C4A0-4293-988F-E94BF2421180 AT free DOT fr> <20140707110714 DOT GJ1803 AT calimero DOT vinschen DOT de> <19B9F8D8-7FD6-4A7B-AC83-BBF8D152319D AT Denis-Excoffier DOT org>
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On Jul  8 21:22, Denis Excoffier wrote:
>=20
> On 2014-07-07 13:07, Corinna Vinschen wrote:
>=20
> >=20
> > For enumerating a non-primary domain, I get exactly two calls to
> > cyg_ldap::open which actually do a connect.  The first call opens the
> > domain for enumeration.  The second call opens the primary domain (NULL)
> > to fetch the POSIX offset value for the foreign domain (see my document
> > explaining the POSIX offset stuff), unless the application or one of
> > its parent processes already fetched the POSIX offset for this domain.
> >=20
> > I don't observer any further calls to connect in this scenario.
> >=20
> >=20
> In your preliminary documentation (your message dated 2014-06-25, please
> correct "seet" in it), trustPosixOffset is "some arbitrary 32 bit value",
> ie including 0.
>=20
> In your code (fetch_posix_offset), td->PosixOffset is used to record the
> value and also (when 0) to record that the value has still not been
> fetched.
>=20
> I have encountered this case in real life. The domain admins have set
> the trustPosixOffset of the secondary domain to zero. This value is there=
fore
> never recorded and the cldap->open occurs again and again.

Ouch.  Why on earth are admins doing this?  There's no way to
workaround this reliably.


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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