linux-kernel - Re: [PATCH v2 1/2] signal: add the "int si_code" arg to prepare_kill

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Date: Fri, 9 Feb 2024 13:01:36 -0700
From: Tycho Andersen <tycho@...ho.pizza>
To: Christian Brauner <brauner@...nel.org>
Cc: Oleg Nesterov <oleg@...hat.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Andy Lutomirski <luto@...capital.net>, linux-api@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] signal: add the "int si_code" arg to
 prepare_kill_siginfo()

On Fri, Feb 09, 2024 at 08:36:24PM +0100, Christian Brauner wrote:
> On Fri, Feb 09, 2024 at 05:39:14PM +0100, Oleg Nesterov wrote:
> > On 02/09, Eric W. Biederman wrote:
> > >
> > > Could you can pass in the destination type instead of the si_code?
> > > Something like I have shown below?
> > 
> > ...
> > 
> > > 	info->si_code = (type == PIDTYPE_PID) ? SI_TKILL : SI_USER;
> > 
> > Yes, I considered this option too.
> > 
> > OK, will send V3 tomorrow.
> 
> Hm, I don't think that's necessary if you're happy to have me just fix
> that up in tree. Here's the two patches updated. It was straightforward
> but I have a baby on my lap so double check, please:
> 
> From 05ffda39f6f5c887cae319274366cbf856c88fe5 Mon Sep 17 00:00:00 2001
> From: Oleg Nesterov <oleg@...hat.com>
> Date: Fri, 9 Feb 2024 14:06:20 +0100
> Subject: [PATCH 1/2] signal: fill in si_code in prepare_kill_siginfo()
> 
> So that do_tkill() can use this helper too. This also simplifies
> the next patch.
> 
> TODO: perhaps we can kill prepare_kill_siginfo() and change the
> callers to use SEND_SIG_NOINFO,  but this needs some changes in
> __send_signal_locked() and TP_STORE_SIGINFO().
> 
> Signed-off-by: Oleg Nesterov <oleg@...hat.com>
> Link: https://lore.kernel.org/r/20240209130620.GA8039@redhat.com
> Signed-off-by: Christian Brauner <brauner@...nel.org>

Looks good to me as well,

Reviewed-by: Tycho Andersen <tandersen@...flix.com>