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Date:	Wed, 1 Mar 2006 21:55:37 +0100
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: No effect of SE_BACKUP_NAME privilege on cygwin?
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On Mar  1 20:28, Christian Franke wrote:
> Enabling SE_BACKUP_NAME has no effect for cygwin programs.

You're expecting that you can use Windows functions in a POSIX
application without disturbing the way Cygwin works.  That's a bit
dangerous.  A Cygwin application's main thread is not running under the
process token, but under a derived impersonation token.  This is true
for every thread in Cygwin.  So, instead of using OpenProcessToken, you
should be able to accomplish what you want by calling OpenThreadToken.

However, I'm wondering if a Cygwin application should always try by
itself to request the SE_BACKUP_NAME privilege.  It would simplify file
access for all privileged processes.  Hmm.


Corinna

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

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