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Date:	Tue, 23 Apr 2002 15:42:37 -0400
From:	Christopher Faylor <cgf-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: Cygdrive mounts
Message-ID:	<20020423194237.GA11970@redhat.com>
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References:	<003401c1eaee$b6458550$03dad741 AT 2kiisikon> <E1705x9-0006xT-00 AT maynard DOT mail DOT mindspring DOT net>
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On Tue, Apr 23, 2002 at 12:27:45PM -0700, Michael A Chase wrote:
>On Tue, 23 Apr 2002 10:45:52 -0700 Chris Ellsworth <cke AT highlandshighspeed DOT net> wrote:
>
>> I am doing install of this for sshd on windows for clients for the
>> purpose of forwarding ports for access such as VNC, pcanywhere FTP and
>> other items and i dont want to give access to the other areas of the
>> drives. I tryed the umount command and have not sucessfully removed
>> it. maybe i am doing something but here is what i have done.
>> 
>> [admin AT 2k-iis-ikon]~:{103}:$ 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 AT 2k-iis-ikon]~:{104}:$ umount -U
>> [admin AT 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 AT 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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