Messages in this thread | | | Date | Fri, 21 Dec 2001 22:28:47 +0100 | From | Andreas Ferber <> | Subject | Re: User-manageable sub-ids proposals |
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On Thu, Dec 13, 2001 at 11:36:16AM +0100, Romano Giannetti wrote: > > I was thinking about the idea of sub-ids to enable users to run "untrusted" > binary or "dangerous" one without risk for their files/privacy.
Most parts of your proposal can be implemented in userspace, without any kernel changes.
In fact, most parts /are/ already implemented, and only waiting to be configured properly. It's called "sudo".
The only deficiency of the userspace only approach I see at the moment is that you can't impersonate the slave user from the main user id regarding to filesystem access. This can be worked around with proper permissions if you take the "one group/one user" approach, all slave users will have the main users group.
Andreas -- Andreas Ferber - dev/consulting GmbH - Bielefeld, FRG --------------------------------------------------------- +49 521 1365800 - af@devcon.net - www.devcon.net - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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