[RFC PATCH v3 05/12] fs: add security blob and hooks for block_device

James Morris jmorris at namei.org
Wed Apr 22 16:42:49 UTC 2020

On Wed, 15 Apr 2020, deven.desai at linux.microsoft.com wrote:

> From: Deven Bowers <deven.desai at linux.microsoft.com>
> Add a security blob and associated allocation, deallocation and set hooks
> for a block_device structure.
> Signed-off-by: Deven Bowers <deven.desai at linux.microsoft.com>

Is there any feedback from block or LSM folk on the addition of a security 
blob for block_device here?

IPE uses this is to track the status of integrity verification of e.g. 
DM-Verity devices, per this code from a subsequent patch:

+       ret = security_bdev_setsecurity(dm_table_get_md(v->ti->table)->bdev,
+                                       DM_VERITY_SIGNATURE_SEC_NAME,
+                                       v->sig->sig, v->sig->sig_size);

James Morris
<jmorris at namei.org>

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