Date: Sun, 20 Nov 2005 15:04:22 +0100 From: Roland Smith <rsmith@xs4all.nl> To: Holger Kipp <hk@alogis.com> Cc: stable@freebsd.org Subject: Re: FBSD-6 usb/scanner-access-rights Message-ID: <20051120140422.GA26681@slackbox.xs4all.nl> In-Reply-To: <20051120131624.GB35164@intserv.int1.b.intern> References: <20051120131624.GB35164@intserv.int1.b.intern>
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--bg08WKrSYDhXBjb5 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Nov 20, 2005 at 02:16:24PM +0100, Holger Kipp wrote: >=20 > Is there an easy way to name the devices a user might > be allowed to access rw, without compromising the system? > I don't want to give operator group to these users, > and I don't want to blindly allow access to some=20 > da- or pass-devices where I cannot determine the order > of numbering easily. One thing you could do is make the groups usb and cdrom and make them the groups owning the relevant devices, e.g. by putting the following in /etc/devfs.rules: add path 'da*s*' mode 0660 group usb add path 'uscanner*' mode 0660 group usb The ownership for the CD-ROM devices should be set in /etc/devfs.conf: # Give members of group cdrom access to the CD/DVD-ROM and DVD+RW via the # SCSI interface own xpt0 root:cdrom perm xpt0 0660 own cd0 root:cdrom perm cd0 0660 link cd0 cdrom link cd0 dvd own pass0 root:cdrom perm pass0 0660 own cd1 root:cdrom perm cd1 0660 own pass1 root:cdrom perm pass1 0660 The user that must be able to use the CD-ROMs and scanner must be a member of the appropriate group. If that is not fine-grained enough, maybe ACLs might help. See setfacl(1). Roland --=20 R.F.Smith (http://www.xs4all.nl/~rsmith/) Please send e-mail as plain text. public key: http://www.xs4all.nl/~rsmith/pubkey.txt --bg08WKrSYDhXBjb5 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQFDgIJmEnfvsMMhpyURArQCAJwLIlfNt/MqWimUt23rErGWgQfywgCdElAB bvKD8QFJYYvK3tLuk9iElWg= =k/zg -----END PGP SIGNATURE----- --bg08WKrSYDhXBjb5--
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