Mimi Zohar <zo...@linux.vnet.ibm.com> wrote:
> Right, it would never get here if the IMA signature verification
> fails. If sig_enforce is not enabled, then it will also work. So the
> only case is if sig_enforced is enabled and there is no key.
>
> eg.
> else if (can_do_ima_check && is_ima_appraise_enabled())
> err = 0;
I'm not sure where you want to put that, but I can't just do this:
/* Not having a signature is only an error if we're strict. */
if (err == -ENOKEY && !sig_enforce &&
(!can_do_ima_check || !is_ima_appraise_enabled()) &&
!kernel_is_locked_down("Loading of unsigned modules"))
err = 0;
else if (can_do_ima_check && is_ima_appraise_enabled())
err = 0;
because that'll print out a message in lockdown mode saying that you're not
allowed to do that and then maybe do it anyway.
David
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