linux-kernel - Re: [PATCH net-next v2 1/3] scm: add SO_PASSPIDFD and SCM

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Message-ID: <20230322004342.29904-1-kuniyu@amazon.com>
Date:   Tue, 21 Mar 2023 17:43:42 -0700
From:   Kuniyuki Iwashima <kuniyu@...zon.com>
To:     <aleksandr.mikhalitsyn@...onical.com>
CC:     <arnd@...db.de>, <brauner@...nel.org>, <davem@...emloft.net>,
        <dsahern@...nel.org>, <edumazet@...gle.com>,
        <keescook@...omium.org>, <kuba@...nel.org>, <kuniyu@...zon.com>,
        <leon@...nel.org>, <linux-arch@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <mzxreary@...inter.de>,
        <netdev@...r.kernel.org>, <pabeni@...hat.com>
Subject: Re: [PATCH net-next v2 1/3] scm: add SO_PASSPIDFD and SCM_PIDFD

From:   Alexander Mikhalitsyn <aleksandr.mikhalitsyn@...onical.com>
Date:   Tue, 21 Mar 2023 19:33:40 +0100
> Implement SCM_PIDFD, a new type of CMSG type analogical to SCM_CREDENTIALS,
> but it contains pidfd instead of plain pid, which allows programmers not
> to care about PID reuse problem.
> 
> Idea comes from UAPI kernel group:
> https://uapi-group.org/kernel-features/
> 
> Big thanks to Christian Brauner and Lennart Poettering for productive
> discussions about this.
> 
> Cc: "David S. Miller" <davem@...emloft.net>
> Cc: Eric Dumazet <edumazet@...gle.com>
> Cc: Jakub Kicinski <kuba@...nel.org>
> Cc: Paolo Abeni <pabeni@...hat.com>
> Cc: Leon Romanovsky <leon@...nel.org>
> Cc: David Ahern <dsahern@...nel.org>
> Cc: Arnd Bergmann <arnd@...db.de>
> Cc: Kees Cook <keescook@...omium.org>
> Cc: Christian Brauner <brauner@...nel.org>
> Cc: Kuniyuki Iwashima <kuniyu@...zon.com>
> Cc: Lennart Poettering <mzxreary@...inter.de>
> Cc: linux-kernel@...r.kernel.org
> Cc: netdev@...r.kernel.org
> Cc: linux-arch@...r.kernel.org
> Signed-off-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@...onical.com>

Reviewed-by: Kuniyuki Iwashima <kuniyu@...zon.com>

Thanks,
Kuniyuki