[linux-cifs-client] RE: Longnames (was problems with cifs)

[Naidu Bollineni]

Thanks for the response. I just wanted to make sure I am not thinking
too much off of reality.

Naidu Bollineni
Senior Member Technical Staff
Kazeon Systems
naidu at kazeon.com
www.kazeon.com

> -----Original Message-----
> From: Steve French [mailto:smfltc at us.ibm.com]
> Sent: Friday, May 06, 2005 1:22 PM
> To: Naidu Bollineni
> Cc: Jeremy Allison; linux-cifs-client at lists.samba.org
> Subject: RE: [linux-cifs-client] RE: Longnames (was problems with
cifs)
> 
> On Fri, 2005-05-06 at 02:42, Naidu Bollineni wrote:
> > Unfortunately with widechar formats having 0xF000 in them, it is
really
> > hard to have a mixed environment like NFS+CIFS.
> >
> > With or without mapchars, if the name came from NFS having these
> > illegal/special characters, server is sending mangled names to CIFS
> > client.
> 
> Mixed NFS & CIFS with special characters might work when the server is
> Windows 200x since Microsoft saves in NTFS such files (with the
> +0xF000)  but I have not tested it.
> 
> Short of Samba changing to allow such characters when POSIX client is
> negotiated (which I want to strongly encourage) I can only think of
one
> alternative - a mount parm that would do mapchars behavior on file not
> found errors on lookup/readdir/rmdir/open/delete/rename, and mapchars
> behavior on returned directory entries (those six that have 0xF000)
but
> not do mapchars behavior on create/mkdir.
> 
> That would not allow such files/directories to be created, so I don't
> see how that is much better.
> 
> >
> > With mapchars+CIFS I create a file with special characters, but
NFSv3
> > can't deal with widechars.
> >
> > So, if I don't have NFS access, theoretically isn't there any other
way
> > to see real names from CIFS client?
> >
> > Naidu Bollineni
> > Senior Member Technical Staff
> > Kazeon Systems
> > naidu at kazeon.com
> > www.kazeon.com
> >
> > > -----Original Message-----
> > > From: Jeremy Allison [mailto:jra at samba.org]
> > > Sent: Friday, May 06, 2005 12:22 AM
> > > To: Steve French
> > > Cc: Naidu Bollineni; linux-cifs-client at lists.samba.org
> > > Subject: Re: [linux-cifs-client] RE: Longnames (was problems with
> > cifs)
> > >
> > > On Thu, May 05, 2005 at 07:11:51PM -0500, Steve French wrote:
> > > > On Thu, 2005-05-05 at 13:12, Naidu Bollineni wrote:
> > > > > The filenames do have <, > characters in them.
> > > > > With mapping the illegal characters (by ORing 0xFF00 to the
> > > character),
> > > > > is it possible for server to return the true name at all, if
the
> > > client
> > > > > says it can handle such things?
> > > >
> > > > Yes. If the "mapchars" mount option is used, the reserved
characters
> > > > (except slash) will be mapped going to/from the server, allowing
you
> > to
> > > > create files with such characters in the filename and see them
in
> > ls,
> > > > stat etc.
> > >
> > > Ok, based on feedback gathered over here at SambaXP I'm
> > > going to fix the parsing algorithms for 3.0.XX (where XX > 14a)
> > > so that "mapchars" isn't needed - we'll allow the "illegal"
characters
> > > from a CIFSFS client.
> > >
> > > Jeremy.
> >