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Date: Mon, 31 Mar 2008 11:37:48 +0200
From: Tomasz Chmielewski <mangoo AT wpkg DOT org>
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Subject: using Windows backup API?
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Traditionally, in UNIX, a root user can access any file in the system 
without doing anything special.

This contrasts with Windows, where even Administrator user can't read 
files for which he has not access permissions (i.e., a file with all 
permissions removed)[1].

To access such files in Windows, one needs to use a special Backup API.


However, ported UNIX tools, like rsync, are not aware of this API (and I 
doubt they ever will) - this results in that they can't access certain 
files, even if the tool is started by the Administrator user:

C:\rsyncd\rsync.exe 1.txt copy.txt
rsync: send_files failed to open "/cygdrive/c/test/1.txt": Permission 
denied (13)


Is it somehow possible to use this Windows Backup API transparently for 
applications using Cygwin dll?



[1] This is something else as files opened exclusively, like Windows 
registry files, which can be accessed by using shadow copy



-- 
Tomasz Chmielewski
http://wpkg.org

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