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

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To: Daniel Colascione <dancol@xxxxxxxxxx>
Subject: Re: [PATCH] proc: allow killing processes via file descriptors
From: Andy Lutomirski <luto@xxxxxxxxxx>
Date: Sun, 18 Nov 2018 10:15:11 -0800
Cc: Christian Brauner <christian@xxxxxxxxxx>, Andrew Lutomirski <luto@xxxxxxxxxx>, "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, "Serge E. Hallyn" <serge@xxxxxxxxxx>, Jann Horn <jannh@xxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Oleg Nesterov <oleg@xxxxxxxxxx>, Aleksa Sarai <cyphar@xxxxxxxxxx>, Al Viro <viro@xxxxxxxxxxxxxxxxxx>, Linux FS Devel <linux-fsdevel@xxxxxxxxxxxxxxx>, Linux API <linux-api@xxxxxxxxxxxxxxx>, Tim Murray <timmurray@xxxxxxxxxx>, Kees Cook <keescook@xxxxxxxxxxxx>, David Howells <dhowells@xxxxxxxxxx>
In-reply-to: <CAKOZueto1CmUSWFKjOkazcDcZH6CiXXCr4U=ghewLh8GjE2-=A@mail.gmail.com>

On Sun, Nov 18, 2018 at 10:07 AM Daniel Colascione <dancol@xxxxxxxxxx> wrote:
> Next, I want to merge my exithand proposal, or something like it. It's
> likewise a simple change that, in a minimal way, addresses a
> longstanding API deficiency. I'm very strongly against the
> POLLERR-on-directory variant of the idea.

Can you explain why you don't like POLLERR-on-a-directory?  I'm not
saying that POLLERR-on-a-directory is fantastic, but I'd like to
understand what your objection is.

Follow-Ups:
- Re: [PATCH] proc: allow killing processes via file descriptors
  - From: Daniel Colascione

References:
- [PATCH] proc: allow killing processes via file descriptors
  - From: Christian Brauner
- Re: [PATCH] proc: allow killing processes via file descriptors
  - From: Daniel Colascione
- Re: [PATCH] proc: allow killing processes via file descriptors
  - From: Andy Lutomirski
- Re: [PATCH] proc: allow killing processes via file descriptors
  - From: Christian Brauner
- Re: [PATCH] proc: allow killing processes via file descriptors
  - From: Daniel Colascione

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