efi: Disable secure boot if shim is in insecure mode
A user can manually tell the shim boot loader to disable validation of images it loads. When a user does this, it creates a UEFI variable called MokSBState that does not have the runtime attribute set. Given that the user explicitly disabled validation, we can honor that and not enable secure boot mode if that variable is set. Signed-off-by:Josh Boyer <jwboyer@fedoraproject.org> Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-efi@vger.kernel.org Link: http://lkml.kernel.org/r/1486380166-31868-6-git-send-email-ard.biesheuvel@linaro.orgSigned-off-by:
Ingo Molnar <mingo@kernel.org>
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