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From: David Laight <David.Laight@ACULAB.COM>
To: 'Daniel Colascione' <dancol@google.com>, Oleg Nesterov <oleg@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	Tim Murray <timmurray@google.com>,
	"Joel Fernandes" <joelaf@google.com>,
	Suren Baghdasaryan <surenb@google.com>,
	"Kees Cook" <keescook@chromium.org>,
	Christian Brauner <christian.brauner@canonical.com>
Subject: RE: [RFC PATCH] Implement /proc/pid/kill
Date: Thu, 1 Nov 2018 11:53:15 +0000	[thread overview]
Message-ID: <061df748f65d41b5bbd4749074dbce29@AcuMS.aculab.com> (raw)
In-Reply-To: <CAKOZuevTF2cjJ0-nK7nv7jbgFexyW-deScaYVzE3iEPC48SAJg@mail.gmail.com>

From: Sent: 31 October 2018 13:28
...
> * I actually have a local variant of the patch that would have you
> open "/proc/$PID/kill/$SIGNO" instead, since different signal numbers
> have different permission checks.

I think you'd need the open() to specify some specific unusual
open modes.
Otherwise it'll be far too easy for scripts (and people) to
accidentally send every signal to every process.

Also think of the memory footprint.

	David

-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)

  parent reply	other threads:[~2018-11-01 11:53 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-29 22:10 [RFC PATCH] Implement /proc/pid/kill Daniel Colascione
2018-10-30  3:21 ` Joel Fernandes
2018-10-30  8:50   ` Daniel Colascione
2018-10-30 10:39     ` Christian Brauner
2018-10-30 10:40       ` Christian Brauner
2018-10-30 10:48         ` Daniel Colascione
2018-10-30 11:04           ` Christian Brauner
2018-10-30 11:12             ` Daniel Colascione
2018-10-30 11:19               ` Christian Brauner
2018-10-31  5:00                 ` Eric W. Biederman
2018-10-30 17:01     ` Joel Fernandes
2018-10-30  5:00 ` Aleksa Sarai
2018-10-30  9:05   ` Daniel Colascione
2018-10-30 20:45     ` Aleksa Sarai
2018-10-30 21:42       ` Joel Fernandes
2018-10-30 22:23         ` Aleksa Sarai
2018-10-30 22:33           ` Joel Fernandes
2018-10-30 22:49             ` Aleksa Sarai
2018-10-31  0:42               ` Joel Fernandes
2018-10-31  1:59                 ` Daniel Colascione
2018-10-30 23:10             ` Daniel Colascione
2018-10-30 23:23               ` Christian Brauner
2018-10-30 23:55                 ` Daniel Colascione
2018-10-31  2:56                 ` Aleksa Sarai
2018-10-31  4:24                   ` Joel Fernandes
2018-11-01 20:40                     ` Joel Fernandes
2018-11-02  9:46                       ` Christian Brauner
2018-11-02 14:34                         ` Serge E. Hallyn
2018-10-31  0:57               ` Joel Fernandes
2018-10-31  1:56                 ` Daniel Colascione
2018-10-31  4:47   ` Eric W. Biederman
2018-10-31  4:44 ` Eric W. Biederman
2018-10-31 12:44   ` Oleg Nesterov
2018-10-31 13:27     ` Daniel Colascione
2018-10-31 15:10       ` Oleg Nesterov
2018-10-31 15:16         ` Daniel Colascione
2018-10-31 15:49           ` Oleg Nesterov
2018-11-01 11:53       ` David Laight [this message]
2018-11-01 15:50         ` Daniel Colascione
2018-10-31 14:37 ` [PATCH v2] " Daniel Colascione
2018-10-31 15:05   ` Joel Fernandes
2018-10-31 17:33     ` Aleksa Sarai
2018-10-31 21:47       ` Joel Fernandes
2018-10-31 15:59 ` [PATCH v3] " Daniel Colascione
2018-10-31 17:54   ` Tycho Andersen
2018-10-31 18:00     ` Daniel Colascione
2018-10-31 18:17       ` Tycho Andersen
2018-10-31 19:33         ` Daniel Colascione
2018-10-31 20:06           ` Tycho Andersen
2018-11-01 11:33           ` David Laight
2018-11-12  1:19             ` Eric W. Biederman
2018-10-31 16:22 ` [RFC PATCH] " Jann Horn
2018-11-01  4:53   ` Andy Lutomirski
2018-11-12 23:13 ` Pavel Machek

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