>>       Thanks for pointing me to udevil (I've already read about it on
>>> this list, but never looked at it before). Looks pretty simple. I'm
>>> considering writing a script which would invoke udevil for
>>> mount/umount and do the same as sudox for other cases. The idea is to
>>> put that script in /usr/bin/local and a link to it in /usr/bin, named
>>> pkexec. I hope to be able to remove policykit with that.

>     I've already written a little C program which has the same calling
> syntax as pkexec and will invoke udevil if the command is mount or umount,
> and sudo -A otherwise. I have added this -A because, in general, one needs
> some dialog window for sudo to read the password. Not tested yet. Still
> developping on Debian-wheezy, which hasn't udevil or spacefm packages.

>     It should be enough to put it in /user/local/bin/pkexec to bypass the
> 'official' pkexec before removing it completely :-) By chance many authors
> rather invoke pkexec than link to polkit library.

>     I'll eventually try to understand what the sudox script is doing and
> reproduce it in my C program - I'm a very bad scripter.

>     Didier