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: <1287403048.29097.1553.camel@twins>
Date:	Mon, 18 Oct 2010 13:57:28 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Eric Paris <eparis@...hat.com>
Cc:	Eric Paris <eparis@...isplace.org>,
	Mimi Zohar <zohar@...ux.vnet.ibm.com>,
	Christoph Hellwig <hch@...radead.org>,
	Dave Chinner <david@...morbit.com>,
	linux-kernel@...r.kernel.org, Mimi Zohar <zohar@...ibm.com>,
	warthog9@...nel.org, hpa@...or.com, devel@...ts.fedoraprojet.org
Subject: Re: ima: use of radix tree cache indexing == massive waste of
 memory?

On Sun, 2010-10-17 at 10:16 -0400, Eric Paris wrote:
> If instead you attack the problem from the other side and start with all
> of the files we'd need some kind of freezer to so we could get the
> atomicity required.  We'd have to review every single file on the system
> before we could be certain that the inode was correct.  Maybe I'm wrong
> and someone else can help me see how to solve it this way.... 

Well, you could use the actual freezer to freeze luserspace and then
simply iterate all open files, I mean, those few sods who actually want
this enabled can either pass a boot option to enable from boot or suffer
the overhead on enable, right?


--
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/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ