Set root dentry and hash for verity before verify
Set root dentry and hash for verity before verify

Set root dentry and root hash in verity fs before we verify the root
directory if a root hash is provided. These are used during
verification.

PiperOrigin-RevId: 367547346

google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor