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[2620:137:e000::1:20]) by mx.google.com with ESMTP id w10-20020a50fa8a000000b004ad7a9f7929si7693697edr.136.2023.03.21.17.46.34; Tue, 21 Mar 2023 17:46:58 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@amazon.com header.s=amazon201209 header.b=OW74Xcz7; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amazon.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229645AbjCVAoI (ORCPT + 99 others); Tue, 21 Mar 2023 20:44:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40898 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229511AbjCVAoH (ORCPT ); Tue, 21 Mar 2023 20:44:07 -0400 Received: from smtp-fw-80006.amazon.com (smtp-fw-80006.amazon.com [99.78.197.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 66B661B2F6; Tue, 21 Mar 2023 17:44:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1679445846; x=1710981846; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=iOvNHogHw969vKlcxixxLuHiGmXJLT1uyknvGNdo50Q=; b=OW74Xcz7D3IYkuiX45zolQ1tp2FPrkpYD4Kq1XNfWh6y9LO124MGHE1f wOMKBE/ikyKSzh1aFB/hJdFyAgIcUDXCFo4WR2xYhqoaF3zeRFKRVv7Ot Eg/hyFtMKERNytNB9aWPC5qQt0APLXxXXTUO9wmygK4ZRs5hWokgZKgZ5 M=; X-IronPort-AV: E=Sophos;i="5.98,280,1673913600"; d="scan'208";a="196002635" Received: from pdx4-co-svc-p1-lb2-vlan2.amazon.com (HELO email-inbound-relay-pdx-2b-m6i4x-ed19f671.us-west-2.amazon.com) ([10.25.36.210]) by smtp-border-fw-80006.pdx80.corp.amazon.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Mar 2023 00:44:02 +0000 Received: from EX19MTAUWB001.ant.amazon.com (pdx1-ws-svc-p6-lb9-vlan3.pdx.amazon.com [10.236.137.198]) by email-inbound-relay-pdx-2b-m6i4x-ed19f671.us-west-2.amazon.com (Postfix) with ESMTPS id 29B4580EF2; Wed, 22 Mar 2023 00:43:57 +0000 (UTC) Received: from EX19D004ANA001.ant.amazon.com (10.37.240.138) by EX19MTAUWB001.ant.amazon.com (10.250.64.248) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.25; Wed, 22 Mar 2023 00:43:57 +0000 Received: from 88665a182662.ant.amazon.com (10.94.217.231) by EX19D004ANA001.ant.amazon.com (10.37.240.138) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.24; Wed, 22 Mar 2023 00:43:52 +0000 From: Kuniyuki Iwashima To: CC: , , , , , , , , , , , , , Subject: Re: [PATCH net-next v2 1/3] scm: add SO_PASSPIDFD and SCM_PIDFD Date: Tue, 21 Mar 2023 17:43:42 -0700 Message-ID: <20230322004342.29904-1-kuniyu@amazon.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230321183342.617114-2-aleksandr.mikhalitsyn@canonical.com> References: <20230321183342.617114-2-aleksandr.mikhalitsyn@canonical.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.94.217.231] X-ClientProxiedBy: EX19D039UWB004.ant.amazon.com (10.13.138.57) To EX19D004ANA001.ant.amazon.com (10.37.240.138) X-Spam-Status: No, score=0.3 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, RCVD_IN_DNSWL_MED,RCVD_IN_MSPIKE_H2,SORTED_RECIPS,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Alexander Mikhalitsyn 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" > Cc: Eric Dumazet > Cc: Jakub Kicinski > Cc: Paolo Abeni > Cc: Leon Romanovsky > Cc: David Ahern > Cc: Arnd Bergmann > Cc: Kees Cook > Cc: Christian Brauner > Cc: Kuniyuki Iwashima > Cc: Lennart Poettering > Cc: linux-kernel@vger.kernel.org > Cc: netdev@vger.kernel.org > Cc: linux-arch@vger.kernel.org > Signed-off-by: Alexander Mikhalitsyn Reviewed-by: Kuniyuki Iwashima Thanks, Kuniyuki