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Hermes SMTP Server) with ESMTPA ID 174ebacd8784abefa7ff5b7a2ade66e9; Wed, 31 May 2023 14:17:11 +0000 (UTC) Message-ID: Date: Wed, 31 May 2023 07:17:08 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.11.0 Subject: Re: [PATCH -next 0/2] lsm: Change inode_setattr() to take struct Content-Language: en-US To: Christoph Hellwig Cc: Christian Brauner , =?UTF-8?B?TWlja2HDq2wgU2FsYcO8?= =?UTF-8?Q?n?= , Xiu Jianfeng , gregkh@linuxfoundation.org, rafael@kernel.org, viro@zeniv.linux.org.uk, dhowells@redhat.com, code@tyhicks.com, hirofumi@mail.parknet.co.jp, linkinjeon@kernel.org, sfrench@samba.org, senozhatsky@chromium.org, tom@talpey.com, chuck.lever@oracle.com, jlayton@kernel.org, miklos@szeredi.hu, paul@paul-moore.com, jmorris@namei.org, serge@hallyn.com, stephen.smalley.work@gmail.com, eparis@parisplace.org, dchinner@redhat.com, john.johansen@canonical.com, mcgrof@kernel.org, mortonm@chromium.org, fred@cloudflare.com, mpe@ellerman.id.au, nathanl@linux.ibm.com, gnoack3000@gmail.com, roberto.sassu@huawei.com, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-cachefs@redhat.com, ecryptfs@vger.kernel.org, linux-cifs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-unionfs@vger.kernel.org, linux-security-module@vger.kernel.org, selinux@vger.kernel.org, wangweiyang2@huawei.com, Casey Schaufler References: <20230505081200.254449-1-xiujianfeng@huawei.com> <20230515-nutzen-umgekehrt-eee629a0101e@brauner> <75b4746d-d41e-7c9f-4bb0-42a46bda7f17@digikod.net> <20230530-mietfrei-zynisch-8b63a8566f66@brauner> <20230530142826.GA9376@lst.de> <301a58de-e03f-02fd-57c5-1267876eb2df@schaufler-ca.com> <20230531132200.GB30016@lst.de> From: Casey Schaufler In-Reply-To: <20230531132200.GB30016@lst.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Mailer: WebService/1.1.21495 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 5/31/2023 6:22 AM, Christoph Hellwig wrote: > On Tue, May 30, 2023 at 07:55:17AM -0700, Casey Schaufler wrote: >> Which LSM(s) do you think ought to be deprecated? > I have no idea. But what I want is less weirdo things messing with > VFS semantics. I am curious what you consider a weirdo thing done by LSMs. Things like io_uring are much stranger than anything an LSM does. > >> I only see one that I >> might consider a candidate. As for weird behavior, that's what LSMs are >> for, and the really weird ones proposed (e.g. pathname character set limitations) >> (and excepting for BPF, of course) haven't gotten far. > They haven't gotten far for a reason usually. Trying to sneak things in > through the back door is exactly what is the problem with LSMs. Mostly developers play by the rules, and we don't let things sneak in.