Cygdrive mounts

Chris Ellsworth cke@highlandshighspeed.net
Tue Apr 23 13:22:00 GMT 2002


but if any unix user that know what im doing can doa mount and .. well
now the obscure is not so obscure any more
but do think the best option si to do ethe deny rights to the group
that comes in from ssh

----- Original Message -----
From: "Christopher Faylor" <cgf-cygwin@cygwin.com>
To: <cygwin@cygwin.com>
Sent: Tuesday, April 23, 2002 12:42 PM
Subject: Re: Cygdrive mounts


> On Tue, Apr 23, 2002 at 12:27:45PM -0700, Michael A Chase wrote:
> >On Tue, 23 Apr 2002 10:45:52 -0700 Chris Ellsworth
<cke@highlandshighspeed.net> wrote:
> >
> >> I am doing install of this for sshd on windows for clients for
the
> >> purpose of forwarding ports for access such as VNC, pcanywhere
FTP and
> >> other items and i dont want to give access to the other areas of
the
> >> drives. I tryed the umount command and have not sucessfully
removed
> >> it. maybe i am doing something but here is what i have done.
> >>
> >> [admin@2k-iis-ikon]~:{103}:$ mount
> >> c:\cygwin\bin on /usr/bin type system (binmode)
> >> c:\cygwin\lib on /usr/lib type system (binmode)
> >> c:\cygwin on / type system (binmode)
> >> c: on /cygdrive/c type user (textmode,noumount)
> >> f: on /cygdrive/f type user (textmode,noumount)
> >> [admin@2k-iis-ikon]~:{104}:$ umount -U
> >> [admin@2k-iis-ikon]~:{105}:$ mount
> >> c:\cygwin\bin on /usr/bin type system (binmode)
> >> c:\cygwin\lib on /usr/lib type system (binmode)
> >> c:\cygwin on / type system (binmode)
> >> c: on /cygdrive/c type user (textmode,noumount)
> >> f: on /cygdrive/f type user (textmode,noumount)
> >> [admin@2k-iis-ikon]~:{106}:$
> >
> >You are likely doomed to disappointment.  Even if you disable
/cygdrive/c,
> >c:/xxx will probably still work.  Perhaps sshd will allow you to
specify a
> >local root.  You can link or mount whatever you want to allow
access to
> >from inside there.
> >
> >I tried "umount -U -c" and "umount -c", but neither worked for me,
probably
> >a local system problem.  I was able to delete the information in
the
> >registry (HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus
Solutions\Cygwin\mounts v2),
> >but I don't know what other side effects might result so I'm
putting it
> >back right away.
>
> 'umount -U -c' and 'umount -c' are the same thing.
>
> If you want to remove something from the system mount table use the
> options mentioned in 'umount -h' for manipulating the system mount
> table.
>
> However, cygwin defaults to /cygdrive, so even if you remove
/cygdrive
> settings from the registry, /cygdrive will still work.
>
> It might be possible to mount /cygdrive to something like '/:::' or
> something, obfuscating its use.
>
> cgf
>
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