Messages in this thread | | | From | Miklos Szeredi <> | Date | Mon, 6 Feb 2023 20:32:16 +0100 | Subject | Re: [PATCH v3 0/6] Composefs: an opportunistically sharing verified image filesystem |
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On Mon, 6 Feb 2023 at 18:16, Amir Goldstein <amir73il@gmail.com> wrote:
> it's not overlay{erofs+erofs} > it's overlay{erofs+ext4} (or another fs-verity [1] supporting fs) > the lower layer is a mutable fs with /objects/ dir containing > the blobs. > > The way to ensure the integrity of erofs is to setup dm-verity at > erofs mount time. > > The way to ensure the integrity of the blobs is to store an fs-verity > signature of each blob file in trusted.overlay.verify xattr on the > metacopy and for overlayfs to enable fsverity on the blob file before > allowing access to the lowerdata. > > At least this is my understanding of the security model.
So this should work out of the box, right?
Thanks, Miklos
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