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From Jon Blower <>
Subject Re: Basic questions about VFS
Date Wed, 07 Sep 2005 08:02:40 GMT
Hi Mario,

Thanks very much for all this information.  The lack of file permissions
support could be a problem for me.  I understand why it's not there, as
many systems don't use permissions, but I was wondering if there could at
least be a system for setting and getting file permissions (if the correct
Capability is set) and for creating files and folders with given

Perhaps there could be a "hasPosixPermissions" Capability, and if a file
has that capability, its permissions can be set and read?

As for the asynchronous I/O, that would be very useful too.  I might be
able to contribute something when I've understood VFS a bit better.

Regards, Jon

Dr Jon Blower              Tel: +44 118 378 5213 (direct line)
Technical Director         Tel: +44 118 378 8741 (ESSC)
Reading e-Science Centre   Fax: +44 118 378 6413
ESSC                       Email:
University of Reading
3 Earley Gate
Reading RG6 6AL, UK

On Tue, 6 Sep 2005, Mario Ivankovits wrote:

> Hi!
> >1) What is the status of the VFS project?
> We are close before a 1.0 release.
> >Is it still actively being developed?
> Currently I am the only active committer, but there is a active user
> base and some contributors.
> >Is it planned to be a key part of any important Apache projects?
> Not that I am aware of. From our internal logs (those which other
> projects fail if I made a mistake) I can see its used in
> cocoon, excalibur, forrest and log4j-chainsaw (log viewer), though I
> know of some other people who use vfs
> as part of their productive system.
> >2) When is a formal release planned?
> see above
> >At the moment is the only way to get the software via the nightly builds?
> Yes - and svn head.
> >The SVN repository ( seems to say that the Commons
> >is closing - is this true, or has the SVN repository moved somewhere else?
> >
> You must dive into jakarta/commons not the top level commons.
> >3) Are there any GUI apps (e.g. file system browsers) that interact with
> >VFS resources?
> >
> log4j-chainsaw
> >4) How does VFS deal with file permissions?
> VFS do not deal with file permissions, its up to the used library and in
> fact at last by the operating system if a system is read-/writeable.
> VFS do not have a api to change/set file permissions.
> >5) Is asynchronous I/O supported?  I.e. can I send a message to write data
> >to a file and provide a callback for when the data are written?
> >
> Currently not, but might be a great addition.
> Do not hesitate to ask further questions.
> ---
> Mario
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