Re: [RFC][PATCH] device mapper: Add builtin function dm_get_status()

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To: Roberto Sassu <roberto.sassu@xxxxxxxxxx>
Subject: Re: [RFC][PATCH] device mapper: Add builtin function dm_get_status()
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Thu, 2 Dec 2021 22:52:11 -0800
In-reply-to: <b4bf4a384b334cdab1522b3b082bd088@huawei.com>
References: <81d5e825-1ee2-8f6b-cd9d-07b0f8bd36d3@linux.microsoft.com> <20211201163708.3578176-1-roberto.sassu@huawei.com> <Yahz1SYRG1CQIh0z@infradead.org> <e57d2d23ec7845febb79ca4476c73fcb@huawei.com> <YaiHX+dWNUlmsNac@infradead.org> <b4bf4a384b334cdab1522b3b082bd088@huawei.com>

On Thu, Dec 02, 2021 at 09:29:52AM +0000, Roberto Sassu wrote:
> The problem being solved is how to grant access to files
> which satisfy a property defined in the policy.

If you have want to enforce access to files in the block layer using
a specific stacking block driver you don't just have one layering
violation but a bunch of them.  Please go back to the drawing board.

Follow-Ups:
- RE: [RFC][PATCH] device mapper: Add builtin function dm_get_status()
  - From: Roberto Sassu

References:
- Re: [RFC PATCH v7 11/16] ipe: add support for dm-verity as a trust provider
  - From: Deven Bowers
- [RFC][PATCH] device mapper: Add builtin function dm_get_status()
  - From: Roberto Sassu
- Re: [RFC][PATCH] device mapper: Add builtin function dm_get_status()
  - From: Christoph Hellwig
- RE: [RFC][PATCH] device mapper: Add builtin function dm_get_status()
  - From: Roberto Sassu
- Re: [RFC][PATCH] device mapper: Add builtin function dm_get_status()
  - From: Christoph Hellwig
- RE: [RFC][PATCH] device mapper: Add builtin function dm_get_status()
  - From: Roberto Sassu

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