Re: [ linus-git ] prctl(PR_SET_KEEPCAPS, ...) is broken for someconfigs, e.g. CONFIG_SECURITY_SELINUX

From: Andrew Morgan
Date: Sun Jun 08 2008 - 18:35:24 EST


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What do people think about comment #8 from Stephen Smalley?:

The dummy module is generally in the untenable position of having to lie
to userspace or break the existing capability-related system call
interface. It should just go away, and make capability the default
module (w/ stubs for the rest of the LSM hooks as with dummy). Then
CONFIG_SECURITY=n will yield the same result as CONFIG_SECURITY=y w/o
any further options.

Cheers

Andrew

Andrew Morton wrote:
| On Sun, 08 Jun 2008 08:10:26 -0700 Andrew Morgan <morgan@xxxxxxxxxx>
wrote:
|
|> Nacked-by: Andrew G. Morgan <morgan@xxxxxxxxxx>
|>
|> In a configuration in which you are not using capabilities, what is the
|> "keep capabilities" operation supposed to do? Lie to you?
|>
|> http://bugzilla.kernel.org/show_bug.cgi?id=10748
|
| I totally agree with comment 11 there. Quite a number of people have
already
| hit this and more surely will. How can we help them (and hence us)?
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