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Date: Wed, 7 Feb 2007 19:01:10 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: ar 'unable to rename... Invalid cross-device link'
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On Feb  7 11:48, Matthew Woehlke wrote:
> Corinna Vinschen wrote:
> >Maybe it's something with your permissions.
> >http://cygwin.com/acronyms/#SHTDI2(*)
> 
> Thanks for trying. Sorry about forgetting the version info, although 
> (and I forgot to mention this too, more apologies...) 'ren' in cmd.com 
> also fails, which is why I am pretty sure the problem is that for some 
> unknown reason, rename() (meaning Windows' API) fails on NFS if the 
> target already exists, at least under whatever combinations of 
> permissions I have... with error 17 (ERROR_NOT_SAME_DEVICE) of all 
> things (which Cygwin translates to 18=EXDEV). I think the real question 
> is 'should ar and/or Cygwin work around this apparent Windows bug'?

If even the native Windows tool fails...

Definitely not ar since that's a generic problem, not a binutils tool
problem.  I have my doubts that we really should workaround anything
here.  The first question is, what *exactly* is the problem we should
workaround?  If it's only a permission problem there's nothing to
workaround for us.

> D'oh! And I have more information... it only fails on Win2k3 (which 
> means SUA, not SFU). I just tried on my XP machine and 'ar' succeeds.
> 
> getfacl doesn't have much to say:

Forget getfacl.  NFS doesn't support ACLs so there's no such thing
as Windows security settings.  The actual relevant settings are in
the SFU or SUA MMC snap-in.

Actually, if you ask me, your goal is to get the native ren working.
If you can't get this working, you will have to ask Microsoft, IMHO.


Corinna

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

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