From: hch@lst.de (Christoph Hellwig)
To: linux-security-module@vger.kernel.org
Subject: [PATCH v2 10/10] ima: use existing read file operation method to calculate file hash
Date: Wed, 5 Jul 2017 19:18:57 +0200 [thread overview]
Message-ID: <20170705171857.GA5246@lst.de> (raw)
In-Reply-To: <20170705170215.GA14148@srcf.ucam.org>
On Wed, Jul 05, 2017 at 06:02:15PM +0100, Matthew Garrett wrote:
> On Wed, Jul 05, 2017 at 10:50:09AM -0400, Mimi Zohar wrote:
> > [Cc'ing linux-ima-users]
> >
> > On Wed, 2017-06-28 at 16:41 +0200, Christoph Hellwig wrote:
> > > NAK - we'll need an explicit method for the integrity code.
> > >
> > > And just curious - what filesystem that you care about actually
> > > implements ->read instead of ->read_iter? We shouldn't be doing that
> > > for real file systems anymore.
> >
> > Right, pseudo filesystems are using ->read. The existing builtin
> > measurement policies exclude a number of pseudo filesystems, but not
> > efivarfs. ?Unfortunately, we do not know what type of custom policies
> > are currently being used.
>
> efi variables contain information that may influence userspace behaviour
> and can also be modified out of band, so I think there's a reasonable
> argument that they should be measured.
Then efivars should grow a ->integrity_read method.
--
To unsubscribe from this list: send the line "unsubscribe linux-security-module" in
the body of a message to majordomo at vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
prev parent reply other threads:[~2017-07-05 17:18 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-21 18:18 [PATCH v2 00/10] define new fs integrity_read method Mimi Zohar
2017-06-21 18:18 ` [PATCH v2 01/10] ima: always measure and audit files in policy Mimi Zohar
2017-06-21 18:18 ` [PATCH v2 02/10] ima: use fs method to read integrity data Mimi Zohar
2017-06-28 14:38 ` Christoph Hellwig
2017-06-21 18:18 ` [PATCH v2 03/10] ima: define "dont_failsafe" policy action rule Mimi Zohar
2017-06-21 18:18 ` [PATCH v2 04/10] ima: define "fs_unsafe" builtin policy Mimi Zohar
2017-06-21 18:18 ` [PATCH v2 05/10] tmpfs: define integrity_read method Mimi Zohar
2017-06-28 14:38 ` Christoph Hellwig
2017-07-06 11:55 ` Mimi Zohar
2017-06-21 18:18 ` [PATCH v2 06/10] fs: define integrity_read method for ext2, gfs2, f2fs, jfs, ramfs Mimi Zohar
2017-06-28 14:39 ` Christoph Hellwig
2017-06-21 18:18 ` [PATCH v2 07/10] ocfs2: define integrity_read method Mimi Zohar
2017-06-28 14:39 ` Christoph Hellwig
2017-06-21 18:18 ` [PATCH v2 08/10] jffs2: " Mimi Zohar
2017-06-28 14:39 ` Christoph Hellwig
2017-06-21 18:18 ` [PATCH v2 09/10] ubifs: " Mimi Zohar
2017-06-28 14:39 ` Christoph Hellwig
2017-06-21 18:18 ` [PATCH v2 10/10] ima: use existing read file operation method to calculate file hash Mimi Zohar
2017-06-28 14:41 ` Christoph Hellwig
2017-07-05 14:50 ` Mimi Zohar
2017-07-05 17:02 ` Matthew Garrett
2017-07-05 17:18 ` Christoph Hellwig [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20170705171857.GA5246@lst.de \
--to=hch@lst.de \
--cc=linux-security-module@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).