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Date: Wed, 10 Nov 2004 22:16:06 -0500
From: "Pierre A. Humblet" <pierre DOT humblet AT ieee DOT org>
To: cygwin AT cygwin DOT com
Subject: Re: vpath search failures in Clearcase when files do actually exist
Message-ID: <20041111031606.GA694929@hpn5170>
References: <OF88A190FE DOT EDBDB1AE-ON87256F46 DOT 00816307-87256F48 DOT 0001D810 AT ca DOT ibm DOT com> <20041110005123 DOT GA8575 AT trixie DOT casa DOT cgf DOT cx> <20041110174726 DOT GA247527 AT Worldnet> <20041110180944 DOT GA17694 AT trixie DOT casa DOT cgf DOT cx>
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In-Reply-To: <20041110180944.GA17694@trixie.casa.cgf.cx>
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On Wed, Nov 10, 2004 at 01:09:47PM -0500, Christopher Faylor wrote:
> On Wed, Nov 10, 2004 at 12:47:26PM -0500, Pierre A. Humblet wrote:
> >On Tue, Nov 09, 2004 at 07:51:23PM -0500, Christopher Faylor wrote:
> >>On Tue, Nov 09, 2004 at 07:21:00PM -0500, Jeremy Broughton wrote:
> >>>Cyg ver:    1.3.10 (although I have reproduced the same problem with 1.5.7)
> >>>OS : Windows 2000
> >>>File system:   MVFS (running gnumake inside a Rational Clearcase dynamic
> >>>view)
> >>>cygcheck:   (See attached file: cygcheck.out)
> >>>
> >>>It appears as though there is a problem using the /cygdrive/m type paths
> >>>inside MVFS when there are extremely large dependency trees.
> >> 
> >>Unless you can point to problems with a standard, supported W2K
> >>filesystem, please don't expect anyone to try to fix this.
> >>
> >>Cygwin uses standard Win32 APIs for detemining if something is a
> >>directory.  If those APIs are not working for Clearcase then it is
> >>unlikely that anyone will be motivated to fix the problem on the Cygwin
> >>side.
> >
> >The OP was suggesting both a problem determining if something is a
> >directory and a problem related to pathnames.  Running strace my shed
> >some light on the root cause.
> 
> Would it have made you feel better if I had said "for dealing with paths
> and determining if something is a directory"?

The "related to pathnames" was refering to the last paragraph in the initial
post, which points to Cygwin (although I can't imagine how):
" As shown above, using vpath .  ../..  /cygdrive/m/top fails, even
though it should work.  Using vpath .  /cygdrive/m/top fails with the same
errors as above.  However, vpath .  M:/top succeeds in the dependency
check, even though M:/top should apparently be written as /cygdrive/m/top
to comply to cygwin standards."
  
> If the OP is willing to do this then I hope he does it on a standard
> filesystem like NTFS, as I originally suggested.  If there is a problem
> there then it is obviously not a ClearCase problem.

Right. But then if it is a ClearCase problem, it can't be identified...
My request would be to trace under the latest Cygwin.

Pierre

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