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=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 71A78C48BCD for ; Wed, 9 Jun 2021 12:55:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 56E8D6139A for ; Wed, 9 Jun 2021 12:55:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231151AbhFIM4x (ORCPT ); Wed, 9 Jun 2021 08:56:53 -0400 Received: from mout.kundenserver.de ([217.72.192.74]:50281 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230023AbhFIM4w (ORCPT ); Wed, 9 Jun 2021 08:56:52 -0400 Received: from [192.168.1.155] ([77.9.120.3]) by mrelayeu.kundenserver.de (mreue107 [212.227.15.183]) with ESMTPSA (Nemesis) id 1MdNLi-1lHcyo1ej2-00ZQyo; Wed, 09 Jun 2021 14:54:50 +0200 Subject: Re: [PATCH RFC] fuse: add generic file store To: Peng Tao Cc: Alessio Balsini , Peng Tao , linux-fsdevel , Miklos Szeredi , Amir Goldstein References: <1622537906-54361-1-git-send-email-tao.peng@linux.alibaba.com> <244309bf-4f2e-342e-dd98-755862c643b8@metux.net> <429fc51b-ece0-b5cb-9540-2e7f5b472d73@metux.net> From: "Enrico Weigelt, metux IT consult" Message-ID: <295cfc39-a820-3167-1096-d8758074452d@metux.net> Date: Wed, 9 Jun 2021 14:54:48 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: tl Content-Transfer-Encoding: 8bit X-Provags-ID: V03:K1:8iQzEZshRlVeFdhrivWFvUfm+LbDY2TdSweMOmBNNDN6UntE5Rz 2eW0JGSs7bAUG38J/BRW5MLhv+Tx3kGHh7SNVOtFJeR/wCWkBBbM4YW1vQFZnPfpZfSet/i cznf2S95K3tdwodTg/Kh8XtgnHqMxZ/BzF9ikhjM4PdQFdDoTrnBrvzLM5lW+QvsTOcoGmc mSJdxsXwi6ldDkUgD6oSA== X-UI-Out-Filterresults: notjunk:1;V03:K0:/gZD5zg8qw8=:rkT+S2RGaUMWZApFHpugE+ WJNEy9t9YbTB1Z9l2VL2492CTKviD874TuF5qzGNNKUBnF/HzbjdzkaMpWGBl8oOHWXKBUkuC iE5TmlPdL7Mok/A+c9TvMqOk4uWSUgCVG3ZTBO3sbhrVCjRTyUuJPudg5qi+MTJ2YPFF8BSv4 TEk6mm1zr8wqOj90MJPCWJ/bxdhOT9xarVFHB8+t46WtwByh/OD/8tek/b+fcAMFtCM0hKlzg XECMHLJcJJwfE1OCMhzdkjs8tX/WjiEL19apoDgDuZywlAqhxBtQvxgHbfre/B9ERPt3iIptU Taq7fAnKmWjaVbY/ibsbcqSWKUxiuzvw0lb+DNLcsHp+RYTs3b481/S1+wC7iVT2QCySahWFl WiRbAnLfqwHQofp00YeGwcxOhyJFETEpQupFQQeUQxN3gbOENRW2ochGoHS8Kss6KBeNFRc6f 6eogao6uI85Dc8dkDw7P5sSnziULDPqs7vuXg5EpkCGsC9XDfGTVln8q60DCnfH3I0SeBEVDI ivyjbhgJjLnJcIZDotL8M8= Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On 08.06.21 14:41, Peng Tao wrote: Hi, > The initial RFC mail in the thread has a userspace example code. Does > it make sense to you? Sorry, I had missed that, now found it. There're some things I don't quite understand: * it just stores fd's I don't see anything where it is actually returned to some open() operation. * the store is machine wide global - everybody uses the same number space, dont see any kind of access conrol ... how about security ? I don't believe that just storing the fd's somewhere is really helpful for that purpose - the fuse server shall be able to reply the open() request with an fd, which then is directly transferred to the client. --mtx -- --- Hinweis: unverschlüsselte E-Mails können leicht abgehört und manipuliert werden ! Für eine vertrauliche Kommunikation senden Sie bitte ihren GPG/PGP-Schlüssel zu. --- Enrico Weigelt, metux IT consult Free software and Linux embedded engineering info@metux.net -- +49-151-27565287