From: Oleg Nesterov <oleg@redhat.com>
To: "Jürg Billeter" <j@bitron.ch>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Michael Kerrisk <mtk.manpages@gmail.com>,
Filipe Brandenburger <filbranden@google.com>,
David Wilcox <davidvsthegiant@gmail.com>,
hansecke@gmail.com, linux-kernel@vger.kernel.org
Subject: Re: [RESEND PATCH] prctl: add PR_[GS]ET_PDEATHSIG_PROC
Date: Thu, 5 Oct 2017 18:27:33 +0200 [thread overview]
Message-ID: <20171005162733.GA20068@redhat.com> (raw)
In-Reply-To: <1507050019.19102.51.camel@bitron.ch>
On 10/03, Jürg Billeter wrote:
>
> My use case is to provide a way for a process to spawn a child and
> ensure that no descendants survive when that child dies. Avoiding
> runaway processes is desirable in many situations. My motivation is
> very lightweight (nested) sandboxing (every process is potentially
> sandboxed).
>
> I.e., pid namespaces would be a pretty good fit (assuming they are
> sufficiently lightweight) but CLONE_NEWPID
sorry if this was already discussed, I didn't read this thread yet...
if CLONE_NEWPID is not suitable for any reason. We already have
PR_SET_CHILD_SUBREAPER. Perhaps we can simply add another
PR_SET_KILL_ALL_DESCEDANTS_ON_EXIT? we can use walk_process_tree()
to send SIGKILL.
Oleg.
next prev parent reply other threads:[~2017-10-05 16:27 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-09 9:40 [PATCH] prctl: add PR_[GS]ET_PDEATHSIG_PROC Jürg Billeter
2017-09-12 17:05 ` Oleg Nesterov
2017-09-12 18:54 ` Jürg Billeter
2017-09-13 17:11 ` Oleg Nesterov
2017-09-13 17:26 ` Jürg Billeter
2017-09-13 17:48 ` Oleg Nesterov
2017-09-29 12:30 ` [RESEND PATCH] " Jürg Billeter
2017-10-02 23:20 ` Andrew Morton
2017-10-03 3:25 ` Eric W. Biederman
2017-10-03 6:45 ` Jürg Billeter
2017-10-03 14:46 ` Eric W. Biederman
2017-10-03 16:10 ` Linus Torvalds
2017-10-03 16:36 ` Eric W. Biederman
2017-10-03 17:02 ` Linus Torvalds
2017-10-03 19:30 ` Eric W. Biederman
2017-10-03 20:02 ` Linus Torvalds
2017-10-03 20:32 ` Eric W. Biederman
2017-10-03 17:00 ` Jürg Billeter
2017-10-03 17:40 ` Eric W. Biederman
2017-10-03 17:47 ` Jürg Billeter
2017-10-03 19:05 ` Eric W. Biederman
2017-10-05 16:27 ` Oleg Nesterov [this message]
2017-10-08 17:47 ` Jürg Billeter
2017-10-09 16:32 ` Eric W. Biederman
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