From: Eric Subject: Re: User permissions or UID/GIDs for portable disks? Date: Wed, 24 Oct 2007 19:38:35 -0700 Message-ID: <1193279915.25351.18.camel@eric-laptop> References: <46c2f4ab0710241110o582dcc27pbd6d2c31474b526b@mail.gmail.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-sc1I45rksxrbySxenV4X" Cc: linux-ext4@vger.kernel.org To: Bram Neijt Return-path: Received: from rv-out-0910.google.com ([209.85.198.190]:16686 "EHLO rv-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753954AbXJYCic (ORCPT ); Wed, 24 Oct 2007 22:38:32 -0400 Received: by rv-out-0910.google.com with SMTP id k20so347394rvb for ; Wed, 24 Oct 2007 19:38:31 -0700 (PDT) In-Reply-To: <46c2f4ab0710241110o582dcc27pbd6d2c31474b526b@mail.gmail.com> Sender: linux-ext4-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org --=-sc1I45rksxrbySxenV4X Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Wed, 2007-10-24 at 20:10 +0200, Bram Neijt wrote: > One of the best solutions I can come up with is if the filesystem > would allow for a switch that would help ignore these permissions as > part of the filesystem. Ignoring file permissions on removable, user-supplied media sounds like something that ought to be done above the level of individual filesystems, just like how we ignore device files and suid/sgid files in certain cases. Maybe this is something that ought to be one level up from the ext2/3/4 filesystem driver? In any case, this raises interesting questions. If we ignore permissions on removable media, then anyone logged into your work computer (to which you do not have root access) will be able to muck about with your files. Is that something you want? Cheers, Eric --=-sc1I45rksxrbySxenV4X Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQBHIAGre2L37HVup3ARAgOKAKCuEBLzc2d15Fsfm9jjkdiwz8NBswCg7UI+ e95RnsrPk4+xjfudm/GPRUk= =+vDq -----END PGP SIGNATURE----- --=-sc1I45rksxrbySxenV4X--