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Date: Thu, 21 Jul 2011 15:31:48 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: [ -w filename ]  returns true when permissions are -r--r--r--
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On Jul 21 07:43, Nellis, Kenneth wrote:
> > From: Eric Blake
> > On 07/20/2011 12:05 PM, Reid Thompson wrote:
> > > Is this broken?  Or a known windows/cygwin discrepancy?  Or am I
> > missing
> > > something with my posix/windows file permissions settings
> > 
> > If you are running as an administrator, that might explain it.  Admins
> > can alter any file regardless of permissions, in which case [ -w is
> > telling you the truth that under your current uid, you can indeed write
> > to the file.
> > 
> > This is a feature of access(file,W_OK), and not a bug.
> 
> FWIW, I'm not running as administrator and I'm running 1.7.9, and I'm
> seeing the same thing:
> 
> $ touch afile
> $ chmod 444 afile
> $ ls -l
> total 0
> -r--r--r-- 1 knellis knellis 0 Jul 21 08:36 afile
> $ [ -w afile ] && echo writable || echo not writable
> writable
> $ echo abc >> afile
> $ cat afile
> abc
> $ ls -l
> total 1
> -r--r--r-- 1 knellis knellis 4 Jul 21 08:37 afile
> $

What system?  XP, Vista?  7?
What's the output of `id'?


Corinna

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

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