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This attaches LSM hooks to the existing firmware loading interfaces: filesystem-found firmware and demand-loaded blobs. On errors, loads are aborted and the failure code is returned to userspace. Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Takashi Iwai <tiwai@suse.de> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>