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From:	Steve Holden <steve AT holdenweb DOT com>
Subject:	Re: Setting cygwin permissions from Windows programs
Date:	Tue, 20 Dec 2005 14:32:51 +0000
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Larry Hall (Cygwin) wrote:
> Steve Holden wrote:
> 
>> I am writing a Python program to generate file trees to be distributed 
>> to a Linus machine using Cygwin's scp. As the GUI to this program uses 
>> wxPython, a native Windows approach is the most straightforward.
>>
>> Is there any way to set permissions on the output files from the 
>> Windows side that will result in predictable permissions when the 
>> output tree is viewed from Cygwin?
>>
>> A Python recipe would be useful, but I'll take what I can get!
> 
> 
> Have you checked what the permissions on a file you created by Windows 
> looks
> like under Cygwin and seen some problem?  If so, please post the details 
> and
> perhaps someone can help.  Otherwise, I'd suggest just doing the above and
> working with the result unless you see problems.  In general, unless you've
> done something to restrict access in Windows, Cygwin can see and interact
> with "natively created" files just fine.
> 
Holger Krull wrote:
 > Cygwin doesn't have an own management of permissions. So any program
 > that modifies permission in Windows will be able to change permissions
 > for cygwin files. cacls and xcacls are command line tools from windows.
 > Don't know how this would be usually done in python.
 >

Thanks for the responses. The issue is that I'd like the files to appear 
in Cygwin with permissions of -rwxr--r--, or -rwxr-xr-x for executables 
and directories.

I'm trying to avoid having to use Cygwin utilities to assert Cygwin 
permissions, but I am unable to determine the Windows permissions I must 
assert when creating the files in order for Cygwin to see those 
permissions. Currently a newly created file appears as:

-rwx------  1 sholden None 13834 Dec 20 14:26 index.html

This is under Win XP. Are the Cygwin and Windows permissions different 
universes that don't interact?

regards
  Steve
-- 
Steve Holden       +44 150 684 7255  +1 800 494 3119
Holden Web LLC                     www.holdenweb.com
PyCon TX 2006                  www.python.org/pycon/


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