valid_policy
if (!valid_policy(policy))
valid_policy = 0;
static int valid_policy = 1;
const char *cause = valid_policy ? "completed" : "failed";
if (valid_policy && ima_check_policy() < 0) {
valid_policy = 0;
"policy_update", cause, !valid_policy, 0);
if (!valid_policy) {
valid_policy = 1;