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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20130910224009.GA23727@kroah.com>
Date:	Tue, 10 Sep 2013 15:40:09 -0700
From:	Greg KH <greg@...ah.com>
To:	Vivek Goyal <vgoyal@...hat.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 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.

thanks,

greg k-h
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/