On Thu, 11 Aug 2005 08:21:39 -0400 Michael Denio
<[EMAIL PROTECTED]> babbled:
> On Wed, Aug 10, 2005 at 09:06:20PM -0400, Carsten Haitzler (The Rasterman)
> wrote:
> > On Wed, 10 Aug 2005 16:03:57 -0400 Michael Denio
> > <[EMAIL PROTECTED]> babbled:
> >
> > > Hi,
> > >
> > > I'm giving E17 a whirl and came across this issue.
> > > ecore_con_server_add() wants to create the socket for
> > > ECORE_CON_LOCAL_USER under the $HOME directory. This is reasonable
> > > except that my home directory is on an AFS mounted volume. Creating a
> > > socket there doesn't work (errno returns 1 when trying to bind()). I
> > > commented out the code:
> > >
> > > homedir = getenv("HOME");
> >
> > it doesn't work on afs? interesting as i tried this on nfs and it works.
> >
> > > so it look in "/tmp" and all works. Any chance or rearranging the
> > > selection of the homedir variable so this will work out of the box?
> >
> > hmmmm - it's possible but it does become nastier as this can become a
> > source of a DOS on a user (another user creating the same dir owned as them
> > and thus not having permission to is) that's why i chose ~/ as the only
> > user with rights to write there should be the user (well and root). there
> > are ways around this like /tmp/USER-x where x is some number. if it exists
> > and is not writable by your user - try the next numebr up until it does
> > work, but again - another source fo dos, just slowing down apps
> > binding/connecting. i could then cache things in ~/.some_file but now we
> > have concurrency issues in keeping that file up to date and since it may be
> > shared amongst multiple hosts, we need to have a per-host specific file...
> >
> > basically using /tmp becomes tricky and thus i avoided it. this opens a bit
> > of a
> > can of worms... :(
> >
>
> Yes, nfs isn't a problem. A bit of googling shows:
>
> http://www.cs.rpi.edu/courses/sysprog/sockets/sock.html
>
> "Note that on systems running AFS, such as the Rensselaer Computer
> System, these sockets must be created in the directory /tmp."
>
> http://groups-beta.google.com/group/linux.debian.bugs.dist/browse_frm/thread/8f7eef20a79cf9ac/423c6d42a9903df8?lnk=st&q=create+socket+afs&rnum=2&hl=en#423c6d42a9903df8
>
> "It attempts to create the unix socket in the home directory but this
> is not always allowed, e.g. with mounted AFS home directories.
> A configure option of where to put the socket or using a more standard
> location would solve the problem."
>
> http://lists.kde.org/?l=kde-core-devel&m=95551897518892&w=2
>
>
> Good news, the above link shows what I should have thought of in the
> first place, namely:
>
> "2) make a symlink from $HOME/well-known-name to a temporary name in
> /tmp"
>
> This works great and your code doesn't have to change. The only thing
> you could do if you desired would be to test for the filesystem type
> and/or mention it in your message:
>
> "Enlightenment cannot set up the IPC socket.
> It likely is already in use by an existing copy of Enlightenment.
> Double check to see if Enlightenment is not already on this display,
> but if that fails try deleting all files in ~/.ecore/enlightenment-*
> and try running again."
>
> Thanks for your reply and for the software, E17 has been a looooooong
> time coming and it is nice to see it starting to come together after all
ok. i've added a comment about AFS to the error dialog suggestiona symlink.
eventualy i can see us making this a much more intelligent error system where
it will then check if is AFS and offer to make a symlink for you and the
corresponding directory in /tmp etc. etc. etc. so you just go "ok" once and it
will fix it up for you permenantly.
--
------------- Codito, ergo sum - "I code, therefore I am" --------------
The Rasterman (Carsten Haitzler) [EMAIL PROTECTED]
裸好多 [EMAIL PROTECTED]
Tokyo, Japan (東京 日本)
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