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Date:	Fri, 10 Jul 2009 04:14:07 -0700 (PDT)
From:	icc97 <ian DOT channing AT vsni DOT co DOT uk>
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Subject:	Re: cl.exe compiles libraries with blank permissions
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Larry Hall (Cygwin) wrote:
> 
> icc97 wrote:
>> 
>> 
>> Larry Hall (Cygwin) wrote:
>>> icc97 wrote:
>>>> Further research shows that the issue is that the file is first created
>>>> with
>>>> additional windows permissions i.e. doing ls -lrt on the file gives:
>>>>
>>>> ----------+ 1 myname            Domain Users  14436 Jul  8 13:00
>>>> mylib.lib
>>>>
>>>> The '+' indicating additional permissions.
>>>>
>>>> The file is then copied to a separate directory and the additional
>>>> permissions are lost, so now doing an ls -lrt gives:
>>>> ---------- 1 myname            Domain Users 14436 Jul  8 13:04
>>>> mylib.lib
>>>>
>>>> The '+' is gone.  So does anyone know why the file permissions get
>>>> removed
>>>> when the file is copied?
>>> I suspect you're using 'cp' which by default only respects POSIX
>>> permissions.  Use the '--preserve=all' switch in this case.
>>
>> Thanks Larry, that explains the copying issue.  I'm not sure what causes
>> the
>> POSIX permissions to be removed by the compiler though.
> 
> While it is a bit strange that a non-Cygwin program would create files
> with
> permissions that are completely untranslatable into some kind of POSIX
> permissions, it is possible.  Non-Cygwin programs, of course, don't have
> to worry about supporting POSIX permission guidelines.
> 
> -- 
> Larry Hall                              http://www.rfk.com
> RFK Partners, Inc.                      (508) 893-9779 - RFK Office
> 216 Dalton Rd.                          (508) 893-9889 - FAX
> Holliston, MA 01746
> 
> _____________________________________________________________________
> 
> A: Yes.
>  > Q: Are you sure?
>  >> A: Because it reverses the logical flow of conversation.
>  >>> Q: Why is top posting annoying in email?
> 
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> 
> 

Hi Larry,

Indeed another good point.  cl.exe seems to respect the POSIX permissions if
there are no ACL permissions.  When there are ACL permissions it keeps these
and removes the POSIX permissions.

Many thanks,

Ian

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