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Date: Thu, 18 Nov 2010 17:22:18 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: sshd problem with recent snapshots
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On Nov 18 12:07, Corinna Vinschen wrote:
> On Nov 17 20:11, Christopher Faylor wrote:
> > On Wed, Nov 17, 2010 at 05:03:03PM -0500, Ken Brown wrote:
> > >On 11/17/2010 10:47 AM, Corinna Vinschen wrote:
> > >> Hmm.  Except, maybe, since you seem to be set up to build Cygwin from
> > >> CVS, could you start building the 09-12 version from CVS and then just
> > >> add one change from CVS at a time using
> > >>
> > >>    cvs up -D 'yyyy-mm-dd HH:MM'
> > >>
> > >> as filter until you encounter the problem?  An interesting situation to
> > >> test would be, if you have the state after this change:
> > >>
> > >>    2010-09-12  Corinna Vinschen<...>
> > >>
> > >>      * sec_acl.cc (acl_worker): Remove.
> > >>      (acl32): Implement acl_worker functionality here.
> > >>      (lacl32): Just return -1 with errno set to ENOSYS.
> > >>      (lacl): Ditto.
> > >>      * include/cygwin/acl.h (lacl): Remove this call.
> > >>
> > >> and then just add this single change from the first 2010-09-13 checkin:
> > >>
> > >>      * fhandler_tty.cc (fhandler_tty_slave::init): Use tty::setpgid method.
> > >
> > >It's fine through the fhandler_tty.cc change, and then the problem 
> > >occurs as soon as I add the rest of the 2010-09-13 11:17:36 checkin.
> > 
> > FWIW, I've finally unravelled the problems on my system that stopped me
> > from logging in via ssh (I needed to revert to a backup of my security
> > settings from 9/2009).  I can't even login at all using the 9/17
> > snapshot although I can run commands like 'ssh localhost "/bin/ls"'.
> > 
> > I'm somewhat distracted right now but I'll do some more digging as time
> > permits.
> 
> Additionally I'll set up a new XP SP3 system for testing.  Maybe I can
> finally reproduce this as well...

Success.  I can reproduce the issue.  I also could reproduce it now on
my other XP SP3 system.  It turned out that it depends on the account
under which the sshd service is started.  Originally I started sshd
under my cyg_server account, just like on any other system.  I changed
that back to the default(*) SYSTEM account and, voila, suddenly I get
the `permission denied' problem.  I still have to debug it, though.


Corinna


(*) Default for pre-2K3 systems.  If you have a Vista or Windows 7
    system, don't try that at home, kids!

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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