Re: [PATCH 14/16] kexec: Export sysfs attributes for secureboot and secure modules to user space

Greg KH
2013-09-10T22:40:46Z

On Tue, Sep 10, 2013 at 05:44:29PM -0400, Vivek Goyal wrote:
> User space kexec-tools need to know whether to verify signature of kernel
> image being loaded. This patch exports two knobs to user space. One is
> for knowing if secureboot is enabled, this knob will be set to 1 if secure
> boot is enabled. Other knob is secure_module_enabled. This knob will be set
> to 1 if secure modules is one.
>
> kexec-tools will verify signature of kernel image if either secureboot is
> enabled or secure modules is enabled. The only difference between two is
> that kexec-tools will set secureboot on in bootparams being passed to
> second kernel if secureboot is on in first kernel.
>
> Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
> ---
> kernel/ksysfs.c | 25 +++++++++++++++++++++++++
> 1 file changed, 25 insertions(+)

Minor nit, if you add/modify/delete sysfs files, you also have to update
Documentation/ABI/ with the information about those files.

thanks,

greg k-h