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Date: Fri, 13 Jul 2007 16:15:26 +0200
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 Jul 13 08:00, Eric Blake wrote:
> According to Corinna Vinschen on 7/13/2007 7:06 AM:
> >> Actually, this is a cygwin question.  Bash's [ command only reports what
> >> access("/h",W_OK) tells it to report, 
> > 
> > It's the latter.  The fact that the USB stick is locked doesn't
> > mean that the permission bits returned by the OS calls are augmented
> > to reflect the fact that the stick is not writable.  All permission
> > bits are still intact.  Only when actually trying to write to the device,
> > you'll get the Win32 error message equivalent of EROFS.
> 
> But POSIX requires access(...,W_OK) to fail with EROFS on a read-only file
> system.  Is there any way for cygwin to easily determine this without
> actually attempting a write?

Not that I'm aware of.  I added this to my TODO list.  However, as
usual, http://cygwin.com/acronyms/#PTC.


Corinna

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

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