Re: [PATCH 0/2] turn on force option for FUSE in builtin policies
From: Christoph Hellwig
Date: Mon Jan 15 2018 - 12:18:34 EST
On Mon, Jan 15, 2018 at 11:32:41AM -0500, Mimi Zohar wrote:
> For XFS, which considers fsmagic numbers private to the filesystem,
> *always* using the fsmagic number is wrong. As to whether this is
> true for other filesystems is unclear. IMA policies have been defined
> in terms of fsmagic numbers for a long time. fsmagic numbers were
> moved from the filesystems to magic.h for this purpose. Someone would
> have complained earlier if it is always wrong.
>
> I just posted a patch titled "ima: define new policy condition based
> on the filesystem name" to allow policies to be defined in terms of
> the i_sb->s_type->name.
ima has no business looking at either the name _or_ the magic number.