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

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Message-ID: <20130911134401.GA15364@redhat.com>
Date:	Wed, 11 Sep 2013 09:44:01 -0400
From:	Vivek Goyal <vgoyal@...hat.com>
To:	Greg KH <greg@...ah.com>
Cc:	linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org, kexec@...ts.infradead.org,
	akpm@...ux-foundation.org, zohar@...ux.vnet.ibm.com,
	d.kasatkin@...sung.com, ebiederm@...ssion.com, hpa@...or.com,
	matthew.garrett@...ula.com
Subject: Re: [PATCH 14/16] kexec: Export sysfs attributes for secureboot and
 secure modules to user space

On Tue, Sep 10, 2013 at 03:40:09PM -0700, Greg KH wrote:
> 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@...hat.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.
> 

Sure. Will update Documentation/ABI/ in next version.

Thanks
Vivek
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