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From: Achim Gratz <Stromeko AT nexgo DOT de>
To: cygwin AT cygwin DOT com
Subject: Re: No way to use ssh ~/.ssh/config with "noacl" option
References: <59FD8C99 DOT 8010703 AT gmail DOT com>	<20171104113723 DOT GC18070 AT calimero DOT vinschen DOT de>	<59FDA8D9 DOT 6050808 AT gmail DOT com> <59FDC12F DOT 1080005 AT codespunk DOT com>	<59FDDCFA DOT 9030306 AT codespunk DOT com>
Date: Sat, 04 Nov 2017 16:43:41 +0100
In-Reply-To: <59FDDCFA.9030306@codespunk.com> (Matt D.'s message of "Sat, 4	Nov 2017 11:30:02 -0400")
Message-ID: <87shdudp76.fsf@Rainer.invalid>
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Matt D. writes:
> This makes sense because Cygwin is pulling the NTFS permissions as
> there are no Cygwin ACLs defined.
>
> The only workaround is to use Window's Security diaglog to disable
> inherited permissions and remove the Users group. This does seem to
> satisfy things.

That's the correct thing to do, even though you made this unnecessarily
hard for yourself by mounting your home directory with "noacl".

> I suppose the argument now is whether this behavior should change in
> the face of a drive mounted with "noacl". It took a bit of guesswork
> as neither chmod or setfacl was changing the NTFS permissions.

I don't think ssh should use files that are accessible by somebody
else.  The noacl mount option is sometimes useful, but certainly not in
this situation, as you found out.

> Interestingly, a config file that I chmodded when the drive was
> mounted with Cygwin ACLs still works with ssh even though "noacl" is
> now defined and it is still part of the HOSTNAME\Users group. Neither
> stat or getfacl show these permissions but they can be seen in the
> security tab of the file properties. I'm guessing that it works
> because it has HOSTNAME\None below HOSTNAME\<my account> or something?

The effective access rights as shown by icacls or similar tools should
tell you what is going on.  If the directory is not readable, then the
file is effectively inaccessible I think.


Regards,
Achim.
-- 
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