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Date:	Fri, 23 Apr 2010 10:45:43 +0200
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: PLEASE TEST YOUR FS (was Re: 1.7.1: cvs version built in is unstable)
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On Apr 22 19:51, Corinna Vinschen wrote:
> On Apr 22 14:12, Corinna Vinschen wrote:
> > Thank you.   Oh well.  When trying to open the file to check for its
> > existance, the NT status code is STATUS_OBJECT_NAME_NOT_FOUND which is
> > equivalent to the POSIX errno ENOENT, "No such file or directory".
> > 
> > Only afterwards, when trying to create the file, the status code is
> > STATUS_OBJECT_NAME_INVALID.  Too late for Cygwin.
> 
> I've just applied a patch which is supposed to fix this problem.
> 
> The core component which evaluates a file and performs basic checks now
> handles the case STATUS_OBJECT_NAME_NOT_FOUND specially.  It checks if
> the filename has leading spaces and/or trailing dots and spaces.  If so,
> it checks the filesystem.  If it's one of the known FSes with broken
> (aka DOS-only) path handling, it removes the offending leading spaces
> and trailing dots and spaces and tries again.
> 
> So this:
> 
>   $ touch "  abc    ...   "
> 
> will create the file
> 
>   "  abc    ...   "
> 
> for instance on NTFS or FAT, but it will create the file
> 
>   "abc"
> 
> on NetApp, NWFS and other filesystems recognized as CIFS (but not Samba).
> 
> This behaviour is equivalent to the behaviour in native Win32
> applications and in Cygwin 1.5.
> 
> While I tested the patch, I had to fake a detail to make it work on
> NTFS.  I have no access to one of the broken filesystems myself, so
> a bit of testing under real-life conditions would be quite helpful.
> 
> So I'd like to urge all users who could reproduce the aforementioned
> problems to test the *next* Cygwin DLL from the Cygwin Developer
> Snapshots URL http://cygwin.com/snapshots/  and report back if it works
> or if it doesn't.  *If* it doesn't work, please report the FS and
> describe the scenario.
> 
> Oh, hey, the cvs problem which started this thread would be quite a
> nice test.

The patch is available in the latest snapshot from 2010-04-22.


Corinna

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

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