full-disclosure - DOS device name handling

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Date: Mon May  1 19:02:41 2006
From: 3APA3A at SECURITY.NNOV.RU (3APA3A)
Subject: DOS device name handling

Dear Klaudiusz Kulik,

This topic arises twice every year. Time to make answering machine.

del \\?\c:\con\con\con\con
del \\.\c:\con\con\con\con

According  to  MSDN  documentation  \\?\  prefix makes Windows to ignore
special  device  names and also eliminates 256 bytes path limitation.

--Monday, May 1, 2006, 8:06:22 PM, you wrote to full-disclosure@...ts.grok.org.uk:

KK> Now directory structure is:
KK> C:\con\con\con\con

KK> Please note that this is one way operation. Renaming from "con/" or
KK> "con" to "foo" does not work. However, if the directory has only one
KK> level (C:\con) and is empty or contains ,,normal'' entries, it is
KK> possible to remove it.

-- 
~/ZARAZA
http://www.security.nnov.ru/