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

On Mon, Nov 19, 2018 at 8:13 AM, Dmitry Safonov [off-list ref] 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.