On 12/17/2017 11:47 AM, Jarkko Sakkinen wrote:
I did not really get the Ken's comment about incompatibility with
different RM's. I guess all TPM user spaces should be able to handle
TPM_RC_COMMAND_CODE and top bits are part of the TCG standard
(TSS2_RESMGR_TPM_RC_LAYER):
I think (?) my comment was around the suggestion that the SAPI TSS could
map -EINVAL to TPM_RC_COMMAND_CODE. I.e, that all the user space TSS'es
(not different RMs) would have to follow this tread and fix their
implementations.
I wrote:
Remember also that SAPI is just one TSS design. There are currently
three others. And SAPI is targeted more as a building block than an
end user library.
Every TSS implementation would have to do this mapping. How would
they even know to do it if they didn't notice this thread? It
wouldn't be documented anywhere other than deep in kernel code.
