linux-kernel - Re: [PATCH v3 2/9] liblockdep: Wrap kernel/lockdep.c to allow usage from userspace

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: <518CFFF5.2060807@oracle.com>
Date:	Fri, 10 May 2013 10:11:01 -0400
From:	Sasha Levin <sasha.levin@...cle.com>
To:	Peter Zijlstra <peterz@...radead.org>
CC:	torvalds@...ux-foundation.org, mingo@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/9] liblockdep: Wrap kernel/lockdep.c to allow usage
 from userspace

On 05/10/2013 10:03 AM, Peter Zijlstra wrote:
> On Fri, May 10, 2013 at 09:23:33AM -0400, Sasha Levin wrote:
>> Wait, I'm confused. Over here, patch is fine with creating empty files:
>>
>> lappy lockdep # touch test.c
>> lappy lockdep # git diff /dev/null test.c > test.patch
>> lappy lockdep # rm test.c
>> lappy lockdep # file test.c
>> test.c: ERROR: cannot open `test.c' (No such file or directory)
>> lappy lockdep # patch -i test.patch
>> patching file test.c
>> lappy lockdep # file test.c
>> test.c: empty
>> lappy lockdep # cat test.patch
>> diff --git a/tools/lib/lockdep/test.c b/tools/lib/lockdep/test.c
>> new file mode 100644
>> index 0000000..e69de29
>> lappy lockdep #
>>
>> So it seems that here patch would cleanly create empty files, what does quilt
>> do differently?
> 
> 
> root@...ns:~/tmp# touch ponies
> root@...ns:~/tmp# git diff /dev/null ponies
> diff --git a/ponies b/ponies
> new file mode 100644
> index 0000000..e69de29
> root@...ns:~/tmp# git diff /dev/null ponies > ponies.patch
> root@...ns:~/tmp# rm ponies
> root@...ns:~/tmp# patch < ponies.patch
> patch: **** Only garbage was found in the patch input.
> 
> t@...ns:~/tmp# patch --version
> patch 2.6.1
> Copyright (C) 1988 Larry Wall
> Copyright (C) 2003, 2009 Free Software Foundation, Inc.
> 
> This program comes with NO WARRANTY, to the extent permitted by law.
> You may redistribute copies of this program
> under the terms of the GNU General Public License.
> For more information about these matters, see the file named COPYING.
> 
> written by Larry Wall and Paul Eggert
> 

Ah!

# patch --version
GNU patch 2.7.1

I've tried downgrading to 2.6.1, and now I get:

lappy lockdep # patch < test.patch
patch: **** Only garbage was found in the patch input.


Thanks,
Sasha
--
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/