linux-kernel - Re: Exposing device ids and driver names

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] [day] [month] [year] [list]

Message-ID: <4AC520F9.8000201@natemccallum.com>
Date:	Thu, 01 Oct 2009 17:36:57 -0400
From:	Nathaniel McCallum <nathaniel@...emccallum.com>
To:	Greg KH <greg@...ah.com>
CC:	linux-kernel@...r.kernel.org
Subject: Re: Exposing device ids and driver names

On 10/01/2009 02:40 PM, Greg KH wrote:
> On Thu, Oct 01, 2009 at 02:35:40PM -0400, Nathaniel McCallum wrote:
>> But I still would prefer a non-invasive solution.
>
> Agreed, sorry I don't have an idea on how to do it.

How about this?

-#define MODULE_GENERIC_TABLE(gtype,name)
+#define MODULE_GENERIC_TABLE(gtype,name)               \
+static const struct gtype##_id gtype##_id_table        \
+  __attribute__ ((unused, alias(__stringify(name))))

We add an alias to the existing symbol.  This just creates a new entry 
in the symbol table.  These entries are all stripped anyway and inserted 
into the System.map.

Impact:
	* No change to the resulting vmlinuz binary
	* Increases size of System.map (~2k with the Fedora config)

Nathaniel

--
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/