From: Deven Bowers <deven.desai@linux.microsoft.com>
To: agk@redhat.com, axboe@kernel.dk, snitzer@redhat.com,
jmorris@namei.org, serge@hallyn.com, zohar@linux.ibm.com,
viro@zeniv.linux.org.uk, paul@paul-moore.com, eparis@redhat.com,
jannh@google.com, dm-devel@redhat.com,
linux-integrity@vger.kernel.org,
linux-security-module@vger.kernel.org,
linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org,
linux-audit@redhat.com
Cc: sashal@kernel.org, pasha.tatashin@soleen.com,
mdsakib@microsoft.com, corbet@lwn.net,
linux-kernel@vger.kernel.org, nramas@linux.microsoft.com,
tyhicks@linux.microsoft.com, jaskarankhurana@linux.microsoft.com
Subject: [RFC PATCH v6 08/11] dm-verity: add bdev_setsecurity hook for root-hash
Date: Wed, 29 Jul 2020 17:31:10 -0700 [thread overview]
Message-ID: <20200730003113.2561644-9-deven.desai@linux.microsoft.com> (raw)
In-Reply-To: <20200730003113.2561644-1-deven.desai@linux.microsoft.com>
Add a security hook call to set a security property of a block_device
in dm-verity with the root-hash that was passed to device-mapper.
Signed-off-by: Deven Bowers <deven.desai@linux.microsoft.com>
---
drivers/md/dm-verity-target.c | 8 ++++++++
include/linux/device-mapper.h | 1 +
2 files changed, 9 insertions(+)
diff --git a/drivers/md/dm-verity-target.c b/drivers/md/dm-verity-target.c
index 9970488e67ed..44914668398d 100644
--- a/drivers/md/dm-verity-target.c
+++ b/drivers/md/dm-verity-target.c
@@ -16,8 +16,10 @@
#include "dm-verity.h"
#include "dm-verity-fec.h"
#include "dm-verity-verify-sig.h"
+#include "dm-core.h"
#include <linux/module.h>
#include <linux/reboot.h>
+#include <linux/security.h>
#define DM_MSG_PREFIX "verity"
@@ -1207,6 +1209,12 @@ static int verity_ctr(struct dm_target *ti, unsigned argc, char **argv)
ti->per_io_data_size = roundup(ti->per_io_data_size,
__alignof__(struct dm_verity_io));
+ r = security_bdev_setsecurity(dm_table_get_md(v->ti->table)->bdev,
+ DM_VERITY_ROOTHASH_SEC_NAME,
+ v->root_digest, v->digest_size);
+ if (r)
+ goto bad;
+
verity_verify_sig_opts_cleanup(&verify_args);
return 0;
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index ab6b8eb0a150..e8ef887e4bae 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -626,5 +626,6 @@ static inline unsigned long to_bytes(sector_t n)
}
#define DM_VERITY_SIGNATURE_SEC_NAME DM_NAME ".verity-sig"
+#define DM_VERITY_ROOTHASH_SEC_NAME DM_NAME ".verity-rh"
#endif /* _LINUX_DEVICE_MAPPER_H */
--
2.27.0
--
Linux-audit mailing list
Linux-audit@redhat.com
https://www.redhat.com/mailman/listinfo/linux-audit
next prev parent reply other threads:[~2020-07-30 2:30 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-30 0:31 [RFC PATCH v6 00/11] Integrity Policy Enforcement LSM (IPE) Deven Bowers
2020-07-30 0:31 ` [RFC PATCH v6 01/11] scripts: add ipe tooling to generate boot policy Deven Bowers
2020-07-30 0:31 ` [RFC PATCH v6 02/11] security: add ipe lsm evaluation loop and audit system Deven Bowers
2020-07-30 0:31 ` [RFC PATCH v6 03/11] security: add ipe lsm policy parser and policy loading Deven Bowers
2020-07-30 0:31 ` [RFC PATCH v6 04/11] ipe: add property for trust of boot volume Deven Bowers
2020-07-30 0:31 ` [RFC PATCH v6 05/11] fs: add security blob and hooks for block_device Deven Bowers
2020-07-30 0:31 ` [RFC PATCH v6 06/11] dm-verity: add bdev_setsecurity hook for dm-verity signature Deven Bowers
2020-07-30 0:31 ` [RFC PATCH v6 07/11] ipe: add property for signed dmverity volumes Deven Bowers
2020-07-30 0:31 ` Deven Bowers [this message]
2020-07-30 0:31 ` [RFC PATCH v6 09/11] ipe: add property for dmverity roothash Deven Bowers
2020-07-30 0:31 ` [RFC PATCH v6 10/11] documentation: add ipe documentation Deven Bowers
2020-07-30 0:31 ` [RFC PATCH v6 11/11] cleanup: uapi/linux/audit.h Deven Bowers
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=20200730003113.2561644-9-deven.desai@linux.microsoft.com \
--to=deven.desai@linux.microsoft.com \
--cc=agk@redhat.com \
--cc=axboe@kernel.dk \
--cc=corbet@lwn.net \
--cc=dm-devel@redhat.com \
--cc=eparis@redhat.com \
--cc=jannh@google.com \
--cc=jaskarankhurana@linux.microsoft.com \
--cc=jmorris@namei.org \
--cc=linux-audit@redhat.com \
--cc=linux-block@vger.kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-integrity@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-security-module@vger.kernel.org \
--cc=mdsakib@microsoft.com \
--cc=nramas@linux.microsoft.com \
--cc=pasha.tatashin@soleen.com \
--cc=paul@paul-moore.com \
--cc=sashal@kernel.org \
--cc=serge@hallyn.com \
--cc=snitzer@redhat.com \
--cc=tyhicks@linux.microsoft.com \
--cc=viro@zeniv.linux.org.uk \
--cc=zohar@linux.ibm.com \
/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).