Bug#924792: pidof: unsanitized user input makes pidof crash

[Matteo Croce]

Hi all,

I have an idea: implement an option to specify the default separator as
in propcs-ng:

https://gitlab.com/procps-ng/procps/commit/73492b182dc60c1605d1b0d62de651fad97807af

    $ pidof bash
    17701 14019 5276 2967

    $ pidof -S, bash      
    17701,14019,5276,2967

    $ pidof -S'                      
    ' bash
    17701
    14019
    5276
    2967

This should be enough to avoid extra calls to grep/sed/awk and
impossible to exploit.

Regards,
-- 
Matteo Croce
per aspera ad upstream