Am Freitag 05 Dezember 2008 12:31:52 schrieb Michal Suchanek: > 2008/12/3 Arne Babenhauserheide <[EMAIL PROTECTED]>: > > Am Sonntag 30 November 2008 21:08:43 schrieb Michal Suchanek: > >> The default distribution can then be modified to create a distribution > >> where even the 'root' shell has some restrictions - that's unavoidable > >> on any system that allows restricting programs. > > > > If the system is GPLv3, the root shell can't be made unfixable (a > > restricted root shell is broken), since the user *must* have a way to > > change the system, else the distributor violates the GPL. > > Look at TiVO - they do not forbid modifying the software but forbid > running the modified software.
Which was one of the strong reasons for the GPLv3 - the GPLv3 protects against Tivoisation. If they'd try their trick with GPLv3 software, they'd violate the license. > However, the DRM verification is something different - they allow you > to run whatever you want on your computer (so far) but they want to > allow accessing protected content only when your system verifies as > known DRM enforcing one (although the verification is technically > unfeasible so far). > > I am not sure if GPLv3 or anything else protects you from that. As soon as I can't run sofware I modified *but someone else can* (for example by provding a new validation), it violates the GPLv3. It breaks the symmetry between all developers. Naturally I am allowed to setup a system where only someone else can modify the software, but I am not allowed to *distribute* that system, and so public services can't be restricted to verified systems, since you woulldn't be allowed to distribute a verified system. (you can do that in-company, though, as long as all computers belong to you) Best wishes, Arne -- -- My stuff: http://draketo.de - stories, songs, poems, programs and stuff :) -- Infinite Hands: http://infinite-hands.draketo.de - singing a part of the history of free software. -- Ein Würfel System: http://1w6.org - einfach saubere (Rollenspiel-) Regeln. -- PGP/GnuPG: http://draketo.de/inhalt/ich/pubkey.txt
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