Re: [REVIEW][PATCH 2/2] sysfs: Restrict mounting sysfs

[Greg Kroah-Hartman]

On Tue, Aug 27, 2013 at 02:46:27PM -0700, Eric W. Biederman wrote:
> 
> Don't allow mounting sysfs unless the caller has CAP_SYS_ADMIN rights
> over the net namespace.  The principle here is if you create or have
> capabilities over it you can mount it, otherwise you get to live with
> what other people have mounted.
> 
> Instead of testing this with a straight forward ns_capable call,
> perform this check the long and torturous way with kobject helpers,
> this keeps direct knowledge of namespaces out of sysfs, and preserves
> the existing sysfs abstractions.
> 
> Signed-off-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>

Odd, but makes sense.

Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
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