Mail Archives: cygwin/2002/10/10/15:54:31
True, but I'd just like to reiterate that manipulating mount points via
the registry is a completely unsupported and unecessary. mount can do
everything that you can do via regedit/regtool w.r.t. mounting. Anyone
that relies on registry tweaking to fix their mount problems will have
problems sometime in the future when this mechanism changes. Use 'mount'
to inspect, create, remove, and edit mount point in Cygwin. 'mount' will
always work.
Larry
Original Message:
-----------------
From: Igor Pechtchanski pechtcha AT cs DOT nyu DOT edu
Date: Thu, 10 Oct 2002 15:41:17 -0400 (EDT)
To: david AT purplebear DOT net, cygwin AT cygwin DOT com
Subject: Re: sshd problems
David,
In Windows, do Start->Run, type 'regedit'. In regedit, Edit->Find, type
'mounts v2', leave only the 'Keys' box checked, then keep pressing "Find
Next". See if somehow there are mounts created for the user 'SYSTEM'
(which would actually be some long id, but that's ok) or ".DEFAULT". The
mounts will show as subkeys of the 'mounts v2' key for that user. See if
the '/' subkey points to "c:/". If it is, you should be able to at least
rename the 'mounts v2' key to something else temporarily and see if it
fixes your problem (or delete it if you feel lucky).
Igor
P.S. There should be a way to do this with regtool as well, but I can't
think of one offhand.
On Thu, 10 Oct 2002, David Monk wrote:
> A further update on this issue. If I do some forcing, ie. using an
alternate
> key and chowning /var/empty to myself, I _can_ get sshd to run. I can't
> login, but it does run.
> Keeping in mind the weird c:\var\log\sshd.log file appearance, I tested it
> out. I deleted c:\var. I started sshd from the shell as /usr/sbin/sshd -h
> /home/dmonk/ssh_host_rsa_key -d -d -d. It ran and no c:\var\log\sshd.log
was
> created. However, when I tried to start the service, the
c:\var\log\sshd.log
> was created. Somehow, when it runs as LocalSystem, it does not have the
> proper cygwin mount points available. This may be the root of the issue.
How
> can this be fixed?
>
> David
>
> ----- Original Message -----
> From: "David Monk" <david AT purplebear DOT net>
> To: "Harig, Mark A." <maharig AT idirect DOT net>; "Len Giambrone"
<frodo AT mit DOT edu>
> Cc: <cygwin AT cygwin DOT com>
> Sent: Thursday, October 10, 2002 1:53 PM
> Subject: Re: sshd problems
>
>
> > >From the default installation, then ssh-host-config perspective of this
> now,
> > my /var/empty looked like this immediately following ssh-host-config:
> >
> > drwxrwxrwx 2 system system 0 Oct 10 13:18 /var/empty
> >
> > Well, the date was different, as I have deleted and recreated it
manually
> a
> > couple times trying to get this working.
> > Changing it to what you show:
> >
> > drwxr-xr-x 2 system system 0 Oct 10 13:18 /var/empty
> >
> > gives the following, using a separate key to even get sshd to run:
> >
> > $ /usr/sbin/sshd -h /home/dmonk/ssh_host_rsa_key -d -d -d
> > debug1: sshd version OpenSSH_3.4p1
> > debug3: Not a RSA1 key file /home/dmonk/ssh_host_rsa_key.
> > debug1: read PEM private key done: type RSA
> > debug1: private host key: #0 type 1 RSA
> > Disabling protocol version 1. Could not load host key
> > Bad owner or mode for /var/empty
> >
> >
> > Looking through the archives shows there have been a lot of recent
> problems
> > with sshd. My current question is, does anyone now have sshd running as
a
> > service, using privsep on Windows 2000 with an NTFS filesystem? I am
> > beginning to wonder if it could be due to service pack 3. That was a
> recent
> > update to this system. Unfortunately, I only use sshd on this system
when
> I
> > need to do things from home, so I can not pinpoint exactly when this
issue
> > appeared.
> >
> > David
> >
> >
> > ----- Original Message -----
> > From: "Harig, Mark A." <maharig AT idirect DOT net>
> > To: "David Monk" <david AT purplebear DOT net>; "Len Giambrone" <frodo AT mit DOT edu>
> > Cc: <cygwin AT cygwin DOT com>
> > Sent: Thursday, October 10, 2002 1:41 PM
> > Subject: RE: sshd problems
> >
> >
> > According to /usr/doc/Cygwin/openssh-3.4p1-5.README:
> >
> > >The new ssh-host-config script also adds the /var/empty directory
> > >needed by privilege separation. When creating the /var/empty directory
> > >by yourself, please note that in contrast to the README.privsep
> > document
> > >the owner sshould not be "root" but the user which is running sshd.
> > So,
> > >in the standard configuration this is SYSTEM. The ssh-host-config
> > script
> > >chowns /var/empty accordingly.
> >
> > In /usr/bin/ssh-host-config is the following code:
> >
> > ># Create /var/empty file used as chroot jail for privilege separation
> > >if [ -f /var/empty ]
> > >then
> > > echo "Creating /var/empty failed\!"
> > >else
> > > mkdir -p /var/empty
> > > # On NT change ownership of that dir to user "system"
> > > if [ $_nt -gt 0 ]
> > > then
> > > chown system.system /var/empty
> > > fi
> > >fi
> >
> > For me, I have the following permissions:
> >
> > $ ls -ld /var/empty
> > drwxr-xr-x 2 SYSTEM SYSTEM 0 Jul 24 11:39 /var/empty
> >
> > > -----Original Message-----
> > > From: David Monk [mailto:david AT purplebear DOT net]
> > > Sent: Thursday, October 10, 2002 2:31 PM
> > > To: Len Giambrone
> > > Cc: cygwin AT cygwin DOT com
> > > Subject: Re: sshd problems
> > >
> > >
> > > Generating a new key worked, as far as finding the key goes. Then it
> > > presented me with a /var/empty ownership or permissions
> > > issue. So, thinking
> > > along the same lines, I chaned owner of that dir to myself.
> > > Finally, sshd
> > > runs. Not as a service unfortunately, but it does run. Also
> > > unfortunately, I
> > > can not log in under these circumstances. I get a password
> > > prompt, but it
> > > never accepts it. I can only guess this has something to do
> > > with privlege
> > > separation.
> > >
> > > Anyway, the main problem here, from the beginning of this
> > > thread, is that
> > > openssh was working fine, running as a service, using
> > > privlege separation
> > > until approx 2 weeks ago. The only thing I could have
> > > possibly done to break
> > > that was updating packages. So, somewhere, something in
> > > cygwin changed.
> > > Either specifically with the openssh package or with the some
> > > other aspect,
> > > but something has definitely changed. Again, this was working
> > > beautifully I
> > > know for absolute certainty 3 weeks ago, the server running
> > > as a service via
> > > cygrunsrv, utilizing the privlege separation. The only things
> > > that have been
> > > done to this system over the last few months has been regular
> > > virus updates,
> > > updates for Windows and cygwin updates. I have not messed with any
> > > configuration files, nor have I changed any file permissions
> > > within cygwin
> > > of it's file tree to cause this.
> > >
> > > David
> >
> > (a huge amount of text deleted)
> >
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> >
> >
>
>
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>
--
http://cs.nyu.edu/~pechtcha/
|\ _,,,---,,_ pechtcha AT cs DOT nyu DOT edu
ZZZzz /,`.-'`' -. ;-;;,_ igor AT watson DOT ibm DOT com
|,4- ) )-,_. ,\ ( `'-' Igor Pechtchanski
'---''(_/--' `-'\_) fL a.k.a JaguaR-R-R-r-r-r-.-.-. Meow!
"Water molecules expand as they grow warmer" (C) Popular Science, Oct'02,
p.51
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