linux-kernel - Re: [PATCH] MODSIGN: /proc/keys is not unconditionally available

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Message-ID: <alpine.LNX.2.00.1501222142160.10817@pobox.suse.cz>
Date:	Thu, 22 Jan 2015 21:42:58 +0100 (CET)
From:	Jiri Kosina <jkosina@...e.cz>
To:	David Howells <dhowells@...hat.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Jonathan Corbet <corbet@....net>
cc:	linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org
Subject: Re: [PATCH] MODSIGN: /proc/keys is not unconditionally available

On Tue, 13 Jan 2015, Jiri Kosina wrote:

> Documentation/module-signing.txt file is referring to /proc/keys file in 
> order to view all keys contained in the kernel's keyring. That file is not 
> universally avialble when CONFIG_KEYS is enabled, which is confusing. The 
> fact that the option needed for this procfs interface to exist contains 
> "_DEBUG_" in its name makes it even more confusing. Document this fact.
> 
> Signed-off-by: Jiri Kosina <jkosina@...e.cz>

Noone complained, but it doesn't seem to have made its way to linux-next 
either. I am now pushing it out to trivial.git.

> ---
>  Documentation/module-signing.txt | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/Documentation/module-signing.txt b/Documentation/module-signing.txt
> index 09c2382..09be78d 100644
> --- a/Documentation/module-signing.txt
> +++ b/Documentation/module-signing.txt
> @@ -152,6 +152,9 @@ in a keyring called ".system_keyring" that can be seen by:
>  	302d2d52 I------     1 perm 1f010000     0     0 asymmetri Fedora kernel signing key: d69a84e6bce3d216b979e9505b3e3ef9a7118079: X509.RSA a7118079 []
>  	...
>  
> +CONFIG_KEYS_DEBUG_PROC_KEYS needs to be enabled for the above procfs interface
> +to be available.
> +
>  Beyond the public key generated specifically for module signing, any file
>  placed in the kernel source root directory or the kernel build root directory
>  whose name is suffixed with ".x509" will be assumed to be an X.509 public key
> 
> -- 
> Jiri Kosina
> SUSE Labs
> 

-- 
Jiri Kosina
SUSE Labs
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