linux-kernel - Re: [PATCH] apm_event{,info}

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]

Date:	Thu, 13 Dec 2007 16:03:37 -0500
From:	Eamon Walsh <ewalsh@...ho.nsa.gov>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Adam Jackson <ajax@...hat.com>, linux-kernel@...r.kernel.org,
	rusty@...tcorp.com.au
Subject: Re: [PATCH] apm_event{,info}_t are userspace types.

Andrew Morton wrote:
> On Fri, 30 Nov 2007 15:02:43 -0500 Adam Jackson <ajax@...hat.com> wrote:
> 
>> These types define the size of data read from /dev/apm_bios.  They
>> should not be hidden behind #ifdef __KERNEL__.
> 
> Missing info: what are the consequences of this fix?  What id broken when
> it it not applied?

This is killing my xserver compile, apm_event_t is used in the xserver 
source.  The commit that introduced the problem is:

commit ee8e7cfe9d330d6f1ce0b9b1620d6df5d9cf6b70
Author: Rusty Russell <rusty@...tcorp.com.au>
Date:   Mon Oct 22 10:56:19 2007 +1000

     Make asm-x86/bootparam.h includable from userspace.

     To actually write a bootloader (or, say, the lguest launcher)
     currently requires duplication of these structures.  Making them
     includable from userspace is much nicer.

     We merge the common userspace-required definitions of e820_32/64.h
     into e820.h for export.

     Signed-off-by: Rusty Russell <rusty@...tcorp.com.au>

> 
> 
>> ---
>>  include/linux/apm_bios.h |    6 +++---
>>  1 files changed, 3 insertions(+), 3 deletions(-)
> 
> Please include Signed-off-by:, as per Documentation/SubmittingPatches,
> thanks.
> 
>> diff --git a/include/linux/apm_bios.h b/include/linux/apm_bios.h
>> index 9754baa..01a6244 100644
>> --- a/include/linux/apm_bios.h
>> +++ b/include/linux/apm_bios.h
>> @@ -18,6 +18,9 @@
>>  
>>  #include <linux/types.h>
>>  
>> +typedef unsigned short	apm_event_t;
>> +typedef unsigned short	apm_eventinfo_t;
>> +
>>  struct apm_bios_info {
>>  	__u16	version;
>>  	__u16	cseg;
>> @@ -32,9 +35,6 @@ struct apm_bios_info {
>>  
>>  #ifdef __KERNEL__
>>  
>> -typedef unsigned short	apm_event_t;
>> -typedef unsigned short	apm_eventinfo_t;
>> -
>>  #define APM_CS		(GDT_ENTRY_APMBIOS_BASE * 8)
>>  #define APM_CS_16	(APM_CS + 8)
>>  #define APM_DS		(APM_CS_16 + 8)
> 
> --
> 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/
> 


-- 
Eamon Walsh <ewalsh@...ho.nsa.gov>
National Security Agency
--
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/