> On Aug 11, 2020, at 5:03 PM, James Morris <jmorris@xxxxxxxxx> wrote: > > On Sat, 8 Aug 2020, Chuck Lever wrote: > >> My interest is in code integrity enforcement for executables stored >> in NFS files. >> >> My struggle with IPE is that due to its dependence on dm-verity, it >> does not seem to able to protect content that is stored separately >> from its execution environment and accessed via a file access >> protocol (FUSE, SMB, NFS, etc). > > It's not dependent on DM-Verity, that's just one possible integrity > verification mechanism, and one of two supported in this initial > version. The other is 'boot_verified' for a verified or otherwise trusted > rootfs. Future versions will support FS-Verity, at least. > > IPE was designed to be extensible in this way, with a strong separation of > mechanism and policy. I got that, but it looked to me like the whole system relied on having access to the block device under the filesystem. That's not possible for a remote filesystem like Ceph or NFS. I'm happy to take a closer look if someone can point me the right way. -- Chuck Lever chucklever@xxxxxxxxx
