s_ruleset
if (s->s_ruleset >= 0)
ruleset = s->s_ruleset;
if (s->s_ruleset >= 0 &&
ruleset != s->s_ruleset)
q, s->s_ruleset, ruleset);
ruleset = s->s_ruleset;
s->s_ruleset = ruleset;
len = sizeof(s->s_ruleset);
s->s_ruleset = -1;