[Pkg-kde-extras] Bug#406470: not reproducible here

[Thomas Braun]

On Tuesday 27 February 2007 10:46, Alexander Klauer wrote:
> Hi Thomas,
>
>
> (no reply-to was set; do you need CC:'s in the future?)

Hi Alexander,

no I don't need CC:'s because I'm subscribed to all kile bugs in debian.

> Thomas Braun:
> > > > - Do you have this behjavour always (or only after a start and stop
> > > > cycle of kile)?
> > >
> > > What do you mean by "start and stop cycle"? Anyway, when I check the
> > > option, kile immediately starts hogging, when I uncheck it, kile
> > > immediately behaves normally again.
> >
> > With start stop cycle I meant, quitting kile and then restarting kile.
>
> I see. Nope, a start-stop cycle is not required.

thanks.

> > > > - Do you have your home on a local device, or some remote stuff (nfs,
> > > > openafs, smb, or similiar)
> > >
> > > The home dirs are in OpenAFS.
> >
> > I think we found the culprit :)
> >
> > Kile is using a fifo to be able to insert tags from lyx-compliant apps
> > (This means e.g. gbib writes a bibtex reference to .lyxpipe.in and then
> > kile gets notified and inserts the reference).
> > But according to
> > http://www.dementia.org/twiki/bin/view/AFSLore/UsageFAQ#2_13_Can_I_create
> >_a _fifo_aka_nam Fifos are not supported by OpenAFS :(
> >
> > Currently I don't know a solution but I will ask some other kile devs for
> > help.
>
> Well, that explains things. If I may make two suggestions:
>
> 1. Kile tries to create a FIFO and when this fails, it creates a regular
> file instead:
>
> [pid  4968] 09:58:11.419907 mknod("/afs/.../home/xxx/.lyxpipe.in", S_IFIFO|
> 0644) = -1 EPERM (Operation not permitted)
> [pid  4968] 09:58:11.419981 dup(2)      = 13
> [pid  4968] 09:58:11.420047 fcntl64(13, F_GETFL) = 0x8001 (flags O_WRONLY|
> O_LARGEFILE)
> [pid  4968] 09:58:11.420102 close(13)   = 0
> [pid  4968] 09:58:11.420138 write(2, "Could not create pipe : Operatio"...,
> 48Could not create pipe : Operation not permitted) = 48
> [pid  4968] 09:58:11.420257 open("/afs/.../home/xxx/.lyxpipe.in", O_RDWR|
> O_LARGEFILE) = -1 ENOENT (No such file or directory)
> [pid  4968] 09:58:11.420326 open("/afs/.../home/xxx/.lyxpipe.in", O_RDWR|
> O_CREAT|O_TRUNC|O_LARGEFILE, 0666) = 13
>
Well actually kile really creates a regular file but due to some unfortunate 
testing after the creation of the fifo.
I try to prepare a short term fix and add point two to the kile 2.0 TODO 
list :)

> The regular file messes up the usual select/pipe semantics. It would be
> better (as a short term solution) to show the user a clean error message
> instead, something like "Sorry, but this functionality is unavailable
> because the file system of your home directory does not support FIFOs."
>
> 2. (long-term solution) Place the FIFO somewhere where they are supported
> for sure, e.g. in /tmp/kde-username/.

Thanks a lot,
Thomas