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Wed, 9 Sep 2020 11:35:55 +0000 (UTC) Date: Wed, 9 Sep 2020 13:35:53 +0200 From: =?iso-8859-1?B?SuFu?= Tomko To: "Dr. David Alan Gilbert (git)" Subject: Re: [PATCH v2 6/6] tools/virtiofsd: xattr name mapping examples Message-ID: <20200909113553.GE1377607@lpt> References: <20200827153657.111098-1-dgilbert@redhat.com> <20200827153657.111098-7-dgilbert@redhat.com> MIME-Version: 1.0 In-Reply-To: <20200827153657.111098-7-dgilbert@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jtomko@redhat.com X-Mimecast-Spam-Score: 0.0 X-Mimecast-Originator: redhat.com Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="jKBxcB1XkHIR0Eqt" Content-Disposition: inline Received-SPF: pass client-ip=205.139.110.61; envelope-from=jtomko@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/09 03:20:45 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: virtio-fs@redhat.com, stefanha@redhat.com, qemu-devel@nongnu.org, vgoyal@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" --jKBxcB1XkHIR0Eqt Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On a Thursday in 2020, Dr. David Alan Gilbert (git) wrote: >From: "Dr. David Alan Gilbert" > >Add a few examples of xattrmaps to the documentation. > >Signed-off-by: Dr. David Alan Gilbert >--- > docs/tools/virtiofsd.rst | 49 ++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 49 insertions(+) > >diff --git a/docs/tools/virtiofsd.rst b/docs/tools/virtiofsd.rst >index 2efa16d3c5..a138549862 100644 >--- a/docs/tools/virtiofsd.rst >+++ b/docs/tools/virtiofsd.rst >@@ -161,6 +161,55 @@ in which case a 'server' rule will always match on al= l names from > the server. > > >+xattr-mapping Examples >+---------------------- >+ >+1) Prefix all attributes with 'user.virtiofs.' >+ >+:: >+ >+-o xattrmap=3D":all:prefix::user.virtiofs.::all:bad:::" >+ >+ >+This uses two rules, using : as the field separator; >+the first rule prefixes and strips 'user.virtiofs.', >+the second rule hides any non-prefixed attributes that >+the host set. >+ >+2) Prefix 'trusted.' attributes, allow others through >+ >+:: >+ >+ "/all/prefix/trusted./user.virtiofs./ >+ /server/bad//trusted./ >+ /client/bad/user.virtiofs.trusted.// >+ /all/ok///" >+ >+ >+Here there are four rules, using / as the field >+separator, and also demonstrating that new lines can >+be included between rules. >+The first rule is the prefixing of 'trusted.'. >+The second rule hides unprefixed 'trusted.' attributes >+on the host. >+The third rule stops a guest from explicitily setting explicitly >+the 'user.viritofs.trusted.' path directly. >+Finally, the fourth rule lets all remaining attributes >+through. >+ >+3) Hide 'security.' attributes, and allow everything else >+ >+:: >+ >+ "/all/bad/security./security./ >+ /all/ok///' >+ >+The first rule combines what could be separate client and server >+rules into a single 'all' rule, matching 'security.' in either >+client arguments or lists returned from the host. This stops >+the client seeing any 'security.' attributes on the server and >+stops it setting any. extra space. Reviewed-by: J=E1n Tomko Jano --jKBxcB1XkHIR0Eqt Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEE7DTm0WabvfIr7YZ4Ak1z5KIMl5QFAl9YvhQACgkQAk1z5KIM l5QUKwf/ZBaLC62OyOmi7Ngv4ZNoHuNaNrtyfzD1D2nZCk+UG476FQQovF9zvol6 AYQhfWSdai8I5fJnCSGSt4XrbBxx5Y03zCWb7v6Dg+KoUHpOq+FANhSWKWJqbVz0 xqelEzZFXX28TBgXCOwCJ490F4oWnarlVc/Z4hxTYgnPlGKs4L3oM51WZpLw6Ocs u+a2E/+GH0+zLJAVqNyvpF7hVNzW2r7bH9uk1DshV6cNc2qnLmYwgsgMDiAcUyGi M4IH+15pgLZ5KgzGkAAHHLcbFfWT/YcOp0OQHSCoBs7llyKNxfoOe1GE3gpY4ZSa IgzD+RvwjuxbDGKY3/f5nouQIpVySw== =LUKL -----END PGP SIGNATURE----- --jKBxcB1XkHIR0Eqt--