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[solved] (kind of) Re: Detect if polkit user-agent is running

On Sun, 1 Apr 2018 19:01:47 +0200
Michael Lange <klappnase@freenet.de> wrote:

> Hi,
> is there any way to detect if a policykit user-agent is running before
> actually calling pkexec to display the dialog with the login prompt?
> >From the pkexec man page it looks like calling
>     pkexec --disable-internal-agent <command>
> should be sufficient as test, since the exit code 127 should tell me no
> user-agent is running. However here with lxpolkit I also get the "127"
> when the user hits the "Cancel" button, so this does not seem to be
> reliable.
> So, does anyone know if it is possible to check the presence of the
> user-agent before I actually call pkexec?
> Best regards
> Michael

After reading some more I now believe this is a bug in lxpolkit and filed
a bug report. The mate and Gnome polkit agents deliver the expected 126
exit code when login is cancelled (though the lxqt counterpart, not much
surprisingly, also gives a 127, as does the KDE agent (but bugs in KDE
never surprise me much either)). 
For now I guess I will have to settle with a somewhat ambiguous error
message, like "No user-agent running or login was cancelled" :)



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If some day we are defeated, well, war has its fortunes, good and bad.
		-- Commander Kor, "Errand of Mercy", stardate 3201.7

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