Hi Matt,
Sorry for bother you!
I didn't see this Matthew's patchset merged in EFI git tree. Do you have
plan to merge it? Or those patches need wait different subsystem leaders
merge.
Thanks a lot!
Joey Lee
於 四，2012-09-20 於 10:40 -0400，Matthew Garrett 提到：
> Secure boot adds certain policy requirements, including that root must not
> be able to do anything that could cause the kernel to execute arbitrary code.
> The simplest way to handle this would seem to be to add a new capability
> and gate various functionality on that. We'll then strip it from the initial
> capability set if required.
>
> Signed-off-by: Matthew Garrett <mjg@xxxxxxxxxx>
> ---
> include/linux/capability.h | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/include/linux/capability.h b/include/linux/capability.h
> index d10b7ed..4345bc8 100644
> --- a/include/linux/capability.h
> +++ b/include/linux/capability.h
> @@ -364,7 +364,11 @@ struct cpu_vfs_cap_data {
>
> #define CAP_BLOCK_SUSPEND 36
>
> -#define CAP_LAST_CAP CAP_BLOCK_SUSPEND
> +/* Allow things that trivially permit root to modify the running kernel */
> +
> +#define CAP_COMPROMISE_KERNEL 37
> +
> +#define CAP_LAST_CAP CAP_COMPROMISE_KERNEL
>
> #define cap_valid(x) ((x) >= 0 && (x) <= CAP_LAST_CAP)
>
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