zeitgeist team mailing list archive

[Manish Sinha <690795@xxxxxxxxxxxxxxxxxx>]

Secondly, the daemon is running with the uid of the current user. Any
application can kill the daemon anytime they need. The only work Quit
does it to make the application easier to kill the daemon.

We have to trust the applications not using Quit.

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https://bugs.launchpad.net/bugs/690795

Title:
  How safe is the Quit method over DBus

Status in Zeitgeist Framework:
  New

Bug description:
  We had the following discussion on IRC
-------------
<abner> seiflotfy, so, any app can quit the zeitgeist daemon via dbus?
<seiflotfy> abner, yes
<seiflotfy> :)
<abner> seiflotfy, hmmm, why?
<seiflotfy> abner, dunno :P
<seiflotfy> abner, i really dunno why i put that
* abner asks God: Why?
<seiflotfy> u dont have to cover it though
<seiflotfy> abner, actually you shouldn'T
<seiflotfy> abner, but i think it could come in handy
<abner> it's madness to let the user quit the daemon and screw all other app :D
<seiflotfy> abner, why will it scre wit up
<seiflotfy> ?
<abner> yes, I will not support it :)
<seiflotfy> in python-zeitgeist and libzeitgeist we actually reinstall the monitors when zeitgeist quits and start again
<abner> well, lets consider that I have an app that basically only uses Zg
<seiflotfy> abner, yeah
<abner> then some other app just shuts the zg daemon down
<abner> my app is screwed :)
<seiflotfy> abner, no
<seiflotfy> nto at all
<seiflotfy> abner, because zeitgeist starts up automatically once a dbus call is made
<seiflotfy> :)
<seiflotfy> and the libraries should be able to reinstall monitors
<seiflotfy> :)
<abner> yes, but what about my pending requests?
<abner> are they all gone?
<seiflotfy> ah you mean during an async 
<seiflotfy> ?
<abner> yes, sure
<seiflotfy> yeah that is a problem
<abner> hehehe
<seiflotfy> but usually we act fast enough
<seiflotfy> so in theory it could be a problem
<seiflotfy> but never happens
<seiflotfy> and no1 uses it
<seiflotfy> :P
<seiflotfy> i thought it would be a good idea to have a process that monitors zeitgeist memory ocmsumption and kills it after it uses 15 MB :P
<abner> we shouldn't trust on it, Murphy always appears when we are not expecting.. better cover this situation in the future
<seiflotfy> +1
<abner> seiflotfy, the linux system can do it
<abner> I mean, shutdown the daemon
<abner> or you can provide a special tool for admns
<seiflotfy> did not k now that
<abner> something like this
<seiflotfy> just ignore the quit dbus method
<abner> actually, dbus also has a command that restarts the daemon
<seiflotfy> I will discuss with the team 
<seiflotfy> that we shoudl throw it out
<abner> but it tries to ensure that all process will live without him
<abner> ok, no problem
<abner> I mean, I don't think that having this option is a problem. I just think that we shouldn't trust only on the Zg speed.. we should cover it better and make it *really* safe
* abner should be noting all this for future reference.. damn
<seiflotfy> abner, u should file bugs
<seiflotfy> :P