linux-kernel - Re: [PATCH 00/30] C/R OpenVZ/Virtuozzo style

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: <1239621392.32604.22.camel@nimitz>
Date:	Mon, 13 Apr 2009 04:16:32 -0700
From:	Dave Hansen <dave@...ux.vnet.ibm.com>
To:	Alexey Dobriyan <adobriyan@...il.com>
Cc:	xemul@...allels.com, containers@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org, hch@...radead.org,
	akpm@...ux-foundation.org, torvalds@...ux-foundation.org,
	mingo@...e.hu
Subject: Re: [PATCH 00/30] C/R OpenVZ/Virtuozzo style

On Mon, 2009-04-13 at 13:14 +0400, Alexey Dobriyan wrote:
> [1] Do I inderstand correctly that cookie for shared object is an
> address on kernel stack? This is obviously unreliable, if yes :-)
> 
>         int objref;
>                 ...
>         /* adding 'file' to the hash will keep a reference to it */
>         new = cr_obj_add_ptr(ctx, file, &objref, CR_OBJ_FILE, 0);

No, that's just Oren's way to get two return variables.

He needs 'new' to figure out whether to write out the full file or just
an objref record.  He also needs 'objref' itself in case of writing
either.  cr_obj_add_ptr() modifies objref.

-- Dave

--
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/