Gentoo Archives: gentoo-user

From: Joerg.Schilling@fokus.fraunhofer.de (Joerg Schilling)
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] cdrecord - devname - was burning a dvd+r dl...
Date: Wed, 08 Oct 2008 10:22:34
Message-Id: 48ec89e1.JjDGmngYioNT9J1Z%Joerg.Schilling@fokus.fraunhofer.de
In Reply to: Re: [gentoo-user] cdrecord - devname - was burning a dvd+r dl... by Dale
1 Dale <rdalek1967@×××××.com> wrote:
2
3 > > In Autumn 2004 this bug was not fixed but the SCSI Linux kernel interface
4 > > was changed in an incompatible way. Now _some_ SCSI commands work as non-root.
5 > >
6 > > SCSI is a try and error protocol and cdrecord checks which commands are working.
7 > > If it is possible to burn with the limuted non-root command set, it _may_ work
8 > > but there is a high risk for buffer underruns. In this case cdrecord believes
9 > > that you own a really dumb burner that does not support most of the nice
10 > > features....
11 > >
12 > > Jörg
13
14 > So that I have a better understanding of this, if he is not a member of
15 > the cd/cdrw group then the command would still work as a user?
16
17 Since the original security bug hass not been fxed, you are able so send
18 a limit set of SCSI commands if you are able to open the device read-only.
19 Libscg opens the devices read/write, so the only effect of such a grup
20 membership is that cdrecord is able to open the device.
21
22 Jörg
23
24 --
25 EMail:joerg@××××××××××××××××××××××××.de (home) Jörg Schilling D-13353 Berlin
26 js@××××××××××××.de (uni)
27 schilling@××××××××××××××××.de (work) Blog: http://schily.blogspot.com/
28 URL: http://cdrecord.berlios.de/private/ ftp://ftp.berlios.de/pub/schily

Replies

Subject Author
Re: [gentoo-user] cdrecord - devname - was burning a dvd+r dl... Dale <rdalek1967@×××××.com>