audit: invalid op= values for rules

Various audit events dealing with adding, removing and updating rules result in
invalid values set for the op keys which result in embedded spaces in op=
values.

The invalid values are
        op="add rule"       set in kernel/auditfilter.c
        op="remove rule"    set in kernel/auditfilter.c
        op="remove rule"    set in kernel/audit_tree.c
        op="updated rules"  set in kernel/audit_watch.c
        op="remove rule"    set in kernel/audit_watch.c

Replace the space in the above values with an underscore character ('_').
Coded-by: NBurn Alting <burn@swtf.dyndns.org>
Signed-off-by: NRichard Guy Briggs <rgb@redhat.com>

kernel/audit_tree.c

@@ -457,7 +457,7 @@ static void audit_log_remove_rule(struct audit_krule *rule)
 	if (unlikely(!ab))
 		return;
 	audit_log_format(ab, "op=");
-	audit_log_string(ab, "remove rule");
+	audit_log_string(ab, "remove_rule");
 	audit_log_format(ab, " dir=");
 	audit_log_untrustedstring(ab, rule->tree->pathname);
 	audit_log_key(ab, rule->filterkey);

kernel/audit_watch.c

@@ -314,7 +314,7 @@ static void audit_update_watch(struct audit_parent *parent,
 					     &nentry->rule.list);
 			}
 
-			audit_watch_log_rule_change(r, owatch, "updated rules");
+			audit_watch_log_rule_change(r, owatch, "updated_rules");
 
 			call_rcu(&oentry->rcu, audit_free_rule_rcu);
 		}
@@ -342,7 +342,7 @@ static void audit_remove_parent_watches(struct audit_parent *parent)
 	list_for_each_entry_safe(w, nextw, &parent->watches, wlist) {
 		list_for_each_entry_safe(r, nextr, &w->rules, rlist) {
 			e = container_of(r, struct audit_entry, rule);
-			audit_watch_log_rule_change(r, w, "remove rule");
+			audit_watch_log_rule_change(r, w, "remove_rule");
 			list_del(&r->rlist);
 			list_del(&r->list);
 			list_del_rcu(&e->list);

kernel/auditfilter.c

@@ -1060,7 +1060,7 @@ int audit_rule_change(int type, __u32 portid, int seq, void *data,
 			return PTR_ERR(entry);
 
 		err = audit_add_rule(entry);
-		audit_log_rule_change("add rule", &entry->rule, !err);
+		audit_log_rule_change("add_rule", &entry->rule, !err);
 		if (err)
 			audit_free_rule(entry);
 		break;
@@ -1070,7 +1070,7 @@ int audit_rule_change(int type, __u32 portid, int seq, void *data,
 			return PTR_ERR(entry);
 
 		err = audit_del_rule(entry);
-		audit_log_rule_change("remove rule", &entry->rule, !err);
+		audit_log_rule_change("remove_rule", &entry->rule, !err);
 		audit_free_rule(entry);
 		break;
 	default: