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Date: Mon, 18 Aug 2008 12:50:48 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
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Subject: Re: File permissions not rx for group in /bin
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On Aug 17 23:07, Jim Kleckner wrote:
> Larry Hall (Cygwin) wrote:
>> Jim Kleckner wrote:
>>> I've read through the various permission documents
>>> to find the explanation and tried Google without
>>> figuring this one out.  Hopefully it is very simple.
>>>
>>> I have an old cygwin install that I was upgrading
>>> to the latest 1.5.  I find that the files in /bin
>>> are mode 700 rather than 750 on my other installations.
>>> The setup.exe is set to "All Users" although perhaps
>>> some time in the dark past it might not have been.
>>>
>>> This means that users other than the one installing
>>> cygwin can't use it.  Is there some magic to make that
>>> work properly?
>>
>> Did you try "chmod 750 /bin"?
> Uh, yeah.
>
> chmod 750 /bin/* works at that moment, but any subsequent
> installs/reinstalls cause reversion to 700.  So it is like swimming 
> upstream.

Larry asked "Did you try "chmod 750 /bin"?"

Larry did not ask "Did you try "chmod 750 /bin/*"?

> Eventually it gets tiring.  getfacl.exe doesn't reveal anything 
> particularly
> enlightening.
>
> It must be some weird inheritance of permissions thing in
> Windows that doesn't exist on POSIX.  Quite a mystery though.

Setup doesn't know (yet) of real POSIX permissions.  It only uses the
Windows inheritance rules for permissions.  If you want POSIX
permissions automatically you have to make sure the parent dir has the
right set of permissions in its ACL.  I'm planning to add real
POSIX permission handling to setup for Cygwin 1.7, but it might not
be implemented soon.


Corinna

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

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