linux-kernel - Re: [PATCH v2 2/2] net: socket: implement SO

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Message-ID: <CAGbU3_krnjbeKnm6Zyn-tqYCHVZFBkB+oCP-UF_kVOGz=zkKFQ@mail.gmail.com>
Date:   Sat, 22 Aug 2020 13:53:03 -0700
From:   Pascal Bouchareine <kalou@....net>
To:     David Miller <davem@...emloft.net>
Cc:     linux-kernel@...r.kernel.org, linux-api@...r.kernel.org,
        netdev@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Alexey Dobriyan <adobriyan@...il.com>,
        Al Viro <viro@...iv.linux.org.uk>
Subject: Re: [PATCH v2 2/2] net: socket: implement SO_DESCRIPTION

On Sat, Aug 22, 2020 at 1:19 PM Pascal Bouchareine <kalou@....net> wrote:
>
> On Sat, Aug 22, 2020 at 12:59 PM Pascal Bouchareine <kalou@....net> wrote:
>
> > Would it make sense to also make UDIAG_SHOW_NAME use sk_description?
> > (And keep the existing change - setsockopt + show_fd_info via
> > /proc/.../fdinfo/..)
>
>
> Ah,very wrong example - to be more precise, I suppose that'd be adding
> a couple idiag_ext for sk_description and pid if possible instead

About the pid part -
On top of multiple pids to scan for a given socket, there's also the
security provided by /proc - I'm not sure what inet_diag does for that
So maybe users calling it will need to scan /proc for a long time anyway...

Or is that doable?