Hi Pete,
the old rootd after the user has been authenticated is using the users
home directory as starting point for relative paths. So for the case:
root://host:port/myfile.root
and for
root://host:port/~/myfile.root
the same file pw_dir/myfile.root will be opened. In the second case the
command "echo ~/myfile.root" is used to return pw_dir/myfile.root.
Cheers, Fons.
On Wed, 2004-08-18 at 14:39, Peter Elmer wrote:
> On Wed, Aug 18, 2004 at 02:25:49PM +0200, Fons Rademakers wrote:
> > Yes, I get an error message from TXUrl. Gerri can you maybe check this
> > and fix it so that localhost works again in the rootd url?
> >
> > Other question, how do I start xrootd so that is assumes relative paths
> > to start in the users home directory? Now default is /tmp.
>
> Which user? The one which started xrootd or the one accessing files?
>
> xrootd behaves differently that rootd in this respect. It doesn't assume
> that paths start in /tmp by default, it only allows access to /tmp by default.
> I've recently started to add some example configurations to describe some
> things:
>
> http://xrootd.slac.stanford.edu/examples/
>
> but the short answer is that you can export other area (e.g. like /data) with
> either a line in the config file:
>
> xrootd.export /data
>
> or by starting xrootd as:
>
> xrootd /data
>
> I don't think it takes a "*" (obviously very insecure).
>
> There is a separate option "oss.localroot" which allows for a _global_
> server side prefix to all paths, i.e. a file at /mnt/temp/path/myfile.root
> with:
>
> oss.localroot /mnt/temp
>
> will be accessed as
>
> root://host:port//path/myfile.root
>
> I'm not actually surt how it will behave for relative paths:
>
> root://host:port/myfile.root *
>
> or for
>
> root://host:port/~elmer/myfile.root
> root://host:port/~/myfile.root *
>
> This is what you are asking about, is that correct? Could you remind me
> exactly what is done by rootd in the two cases marked with an "*"? (i.e.
> relative path WRT what and "~" means which user?)
>
> Pete
>
>
>
> > On Wed, 2004-08-18 at 11:24, Peter Elmer wrote:
> > > Hi Fons,
> > >
> > > On Tue, Aug 17, 2004 at 12:48:43PM +0200, Fons Rademakers wrote:
> > > > the rule in TFile::Open for opening via rootd currently is:
> > > >
> > > > "If the url points to the localhost and the file will be opened in
> > > > readonly mode and the current user has read access or the specified
> > > > user is equal to the current user then open local TFile."
> > > >
> > > > This feature is specially important for PROOF where we access files
> > > > always via rootd urls (so any worker can access any file) but where the
> > > > packetizer optimizes the work so that the workers mostly will get local
> > > > files. Using the above feature these local files will be opened directly
> > > > as TFile's and won't go through rootd. To force a local file to be
> > > > opened via rootd specify as host "localhost". If TXUrl this also
> > > > supports then we will have the same behavior. If this "localhost"
> > > > feature is supported by netx/xrootd then we can always use that as
> > > > "backdoor" to test xrootd on the same machine as where the client runs.
> > >
> > > Yes, the "localhost" option was in fact what Alvise and Fabrizio were
> > > using themselves for this purpose. I've still not succeeded in building
> > > the HEAD, but is the issue you are seeing related to the "in or out domain"
> > > checks? That is what I was seeing with the last XTNetFile version before
> > > they began the migration to TXNetFile.
>
>
> -------------------------------------------------------------------------
> Peter Elmer E-mail: [log in to unmask] Phone: +41 (22) 767-4644
> Address: CERN Division PPE, Bat. 32 2C-14, CH-1211 Geneva 23, Switzerland
> -------------------------------------------------------------------------
--
Org: CERN, European Laboratory for Particle Physics.
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WWW: http://www.rademakers.org/fons/ Fax: +41 22 7679480
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