From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E6BF5C433E1 for ; Sat, 22 Aug 2020 19:36:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D389E2078A for ; Sat, 22 Aug 2020 19:36:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728639AbgHVTgx (ORCPT ); Sat, 22 Aug 2020 15:36:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60190 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728671AbgHVTgw (ORCPT ); Sat, 22 Aug 2020 15:36:52 -0400 Received: from shards.monkeyblade.net (shards.monkeyblade.net [IPv6:2620:137:e000::1:9]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 383DEC061574; Sat, 22 Aug 2020 12:36:52 -0700 (PDT) Received: from localhost (unknown [IPv6:2601:601:9f00:477::3d5]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id 60D3215CED94F; Sat, 22 Aug 2020 12:20:05 -0700 (PDT) Date: Sat, 22 Aug 2020 12:36:50 -0700 (PDT) Message-Id: <20200822.123650.1479943925913245500.davem@davemloft.net> To: kalou@tfz.net Cc: linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, netdev@vger.kernel.org, kuba@kernel.org, akpm@linux-foundation.org, adobriyan@gmail.com, viro@zeniv.linux.org.uk Subject: Re: [PATCH v2 2/2] net: socket: implement SO_DESCRIPTION From: David Miller In-Reply-To: <20200822032827.6386-2-kalou@tfz.net> References: <20200815182344.7469-1-kalou@tfz.net> <20200822032827.6386-1-kalou@tfz.net> <20200822032827.6386-2-kalou@tfz.net> X-Mailer: Mew version 6.8 on Emacs 26.3 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Sat, 22 Aug 2020 12:20:05 -0700 (PDT) Sender: linux-api-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-api@vger.kernel.org From: Pascal Bouchareine Date: Fri, 21 Aug 2020 20:28:27 -0700 > This command attaches the zero terminated string in optval to the > socket for troubleshooting purposes. The free string is displayed in the > process fdinfo file for that fd (/proc//fdinfo/). > > One intended usage is to allow processes to self-document sockets > for netstat and friends to report > > We ignore optlen and constrain the string to a static max size > > Signed-off-by: Pascal Bouchareine This change is really a non-starter unless the information gets published somewhere where people actually look at dumped sockets, and that's inet_diag and friends.