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Date: Tue, 24 Nov 2009 09:41:27 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: [1.7] git checkout or clean fails to unlink submodule
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On Nov 24 12:24, David Antliff wrote:
> > On Mon, Nov 23, 2009 at 17:26, Eric Blake wrote:
> >> According to David Antliff on 11/22/2009 9:20 PM:
> >>> Any suggestions how to investigate this further? Is there some way
> >>> that Windows or Cygwin is somehow preventing the deletion of this
> >>> directory?
> >>
> >> More likely, this is due to the fact that git submodule is still an
> >> interface in progress, and this is likely to be an upstream limitation.
> >> I'd see if you can reproduce it on Linux, and if so, report it upstream.
> >> Which reminds me, I need to package a newer version of git soon.
> 
> I've built git-1.6.4.2 from source on Linux (Ubuntu 8.04.3) and tried
> the same test case. In this situation I get the following warning:
> 
> $ git checkout -f master
> warning: unable to unlink build: Is a directory
> 
> This seems like a much more sensible warning message than "Operation
> not permitted" on Cygwin - perhaps there's something that can be
> improved there?

POSIX-1.2008 requires that the unlink(2) function returns EPERM
("Operation not permitted") if you try to unlink a directory and the
implementation doesn't allow this.  Linux is deliberately deviating
from POSIX by returning EISDIR.


Corinna

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

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