Here is a tinny patch to make p9p's mount(1) work on linux even if you
have the v9fs (or fuse *yuck*) modules built into your kernel rather
than as modules.

Still there is the issue of what to do if you are not root, maybe a
9pmount helper program that is suid could take care of this? Sqweek
wrote a very nice 9mount program (
http://sqweek.dnsdojo.org/code/9mount/docs ) that maybe could be
added to p9p, unfortunately v9fs has changed its interface/params once
more and 9mount doesn't work with recent kernels *sigh*

Peace and best wishes

uriel

P.S.: Can someone please forward this to russ, last I heard he had my
email address in his kilfile.

because I'm difficult you may need to check the version of the kernel
you are running, some of the options syntax has changed and you may
want to set some of the newer security options (the access option) to
be more consistent with the Plan 9 mindset.

-eric

On Wed, Jun 18, 2008 at 8:42 PM, Uriel gmail.com> wrote:

Thanks for your reply, but I'm not clear what you mean: should p9p's
mount check the kernel version? or are you talking about 9mount?

By the way, where can one find the git tree with the latest v9fs? I
was googling and struggling with the swik 'thing' (words fail me...),
but couldn't find it, I know it is somewhere...

Also any other feedback on what changes and improvements 9mount might
need before it can be made part of p9p (or maybe shipped with the
standard linux mount(1) tools?).

uriel

On Thu, Jun 19, 2008 at 3:57 AM, Eric Van Hensbergen gmail.com> wrote:

In my opinion,

the Uriel patch is better. If you check for the words "9p(2000)" and
"fuse" (without spaces, end of line, start of line, or other things)
probably the patch will be "kernel independent"

The "lsmod" output format can change in new releases too.

Saludos.

http://swtch.com/v9fs seems to have a nightly updated copy of v9fs in
the linux kernel tree.

On Thu, Jun 19, 2008 at 12:05 AM, Uriel gmail.com> wrote:

Amen.

Thanks for the patch, Uriel.

The http://swtch.com/v9fs script stopped working
a long time ago, and I never bothered to find
out why. I've changed the text on that page,
though clicking on the "date and checksums"
link has always shown that the last update
was October 2006.

A few p9p programs--acme, tapefs, vacfs--now
accept a -m option directing them to mount at a
particular place in the directory tree, via 9pfuse.
There is no option to mount via the Linux 9p module.

I'm a little tired of the "Fuse sucks" meme.

On Wed, Jun 18, 2008 at 10:05 PM, Uriel gmail.com> wrote:

Whatever function deals with passing the options to the mount system
call needs the modification. The few changes that are there may be
fixed by me doing a better job and supporting old names for options,
but it won't help for the kernels already in circulation.

The "latest" is in linus' head branch on kernel.org.
The current development stream is in
git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs.git in the
v9fs-devel branch.

being unfamilar with this jargon, i initially misread this as commentary
rather than fact.

☺

- erik

Ah, I see. Maybe just requiring a >2.6.25 kernel should be fine, or
are there going to be more changes in the future? :)

Ah, that was what I was looking for, would be nice to document the
location of that repo somewhere... (*must restrain from commenting on
swik*)