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From: Herb Maeder <maeder AT maeder DOT org>
In-reply-to: Corinna Vinschen <corinna-cygwin@cygwin.com> 's message of                  Mon, 21 Jan 2008 16:23:44 +0100.
Subject: Re: hard link error on Vista with recent snapshots
Date: Mon, 21 Jan 2008 12:33:41 -0800
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On Jan 21 16:23, Corinna Vinschen wrote:
> On Jan 21 15:53, Corinna Vinschen wrote:
> > On Jan 19 07:30, Herb Maeder wrote:
> > > I'm seeing a error when creating hard links under Vista using the 
> > > cygwin1.dll snapshots starting at cygwin1-20070802.dll (through at 
> > > least cygwin1-20080112.dll). 
> > > 
> > > To reproduce:
> > >   * stop/exit all cygwin processes
> > >   * replace bin/cygwin1.dll with one of the snapshot dlls above
> > >   * fire up bash and run the following commands:
> > >       % rm -rf foo bar
> > >       % touch foo
> > >       % ln foo bar
> > >       ln: creating hard link `bar' => `foo': Permission denied
> > 
> > Thanks for the report.  I fixed this in CVS.  As it turned out, you
> > can't open a file with access flags set to 0.  ZwOpenFile requires at
>                                             ^^^^^
>                                             ...in Vista/Longhorn.
> 
> > least READ_CONTROL access.
>                          ^^^^
>                          ...in Vista/Longhorn.  0 works fine in earlier
> Windows versions.

Excellent!  Thank you very much for the explanation and the quick fix.

Herb.

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