Re: [PATCH] proc: allow killing processes via file descriptors

[Daniel Colascione]

On Mon, Nov 19, 2018 at 8:13 AM, Dmitry Safonov <0x7f454c46@xxxxxxxxx> wrote:
> I wonder how fast it would be holding a pid with another open()ed fd.
> And then you need to read comm (or how you filter whom to kill).
> It seems to me that procfs will be even slower with this safe-way.
> But I might misunderstand the idea, excuses.
>
> So, I just wanted to gently remind about procfs with netlink socket[1].

We discussed netlink was extensively on the thread about
/proc/pid/kill. For numerous reasons, it's not suitable for
fundamental process management. We really need an FD-based interface
to processes, just like we have FD-based interfaces to other resource
types. We need something consistent and reliable, not an abuse of a
monitoring interface.

> Probably, if it's time to add a new API for procfs, netlink may be more
> desirable.

Definitely not.