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Date: Wed, 9 Mar 2011 12:50:24 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: if [ -w branching: how to spot a locked USB stick
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On Mar  9 12:38, Corinna Vinschen wrote:
> On Mar  9 11:11, Fergus wrote:
> > >> http://cygwin.com/ml/cygwin-cvs/2007-q3/msg00035.html
> > 
> > Thanks, Corinna, amazingly helpful and prompt (and concise) as usual.
> > However: here is an excerpt from a DOS command prompt:
> > 
> > Q:\home\user>dir  /ar /s /b <Enter>
> > Q:\home\user\sc\l\gn
> > Q:\home\user\sc\d\amy.d
> > 
> > In other words, under $HOME, there is one read-only folder
> > ~/sc/l/gn/ and one read-only file ~/sc/l/d/amy.d.
> > However, ls -al exhibits this attribute only for the file and not
> > the folder:
> > 
> > ~> # NB In what follows ...
> > ~> # ... amy.d  shows up as -r-- not -rw- GOOD ...
> > ~> # ... but gn shows up as drwx not d-wx NOT SO GOOD
> > ~> ls -alR sc
> > ...
> > sc/d:
> > ...
> > -r--r--r-- 1 fergus q.1.7    4829 Feb 16 07:00 amy.d
> > ...
> > sc/l:
> > drwxr-xr-x 1 fergus q.1.7     0 Mar  8 14:56 gn/
> > ...
> > 
> > and if [ -w ... also gets things wrong:
> > 
> > ~> if [ -w sc/d/amy.d ] ; then echo +W ; else echo -W ; fi
> > -W
> > ~> if [ -w sc/l/gn ] ; then echo +W ; else echo -W ; fi
> > +W
> > 
> > Is this something that could receive attention? (Hope I haven't
> > somehow got things wrong myself.)
> 
> First of all, this is something entirely different from what you were
> asking in your OP.
> 
> Second, keep in mind that the R/O attribute on directories does not
> indicate a read-only directory, therefore it's ignored by Cygwin as
> well.  See http://support.microsoft.com/kb/326549.

If you really need a R/O directory you should set the actual NTFS
permissions using chmod.  Forget the DOS attributes.


Corinna

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

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