cpg: Print cpg name to debug informations

In downlist and joinlist debug output group was printed in nonsense
format of integer to pointer to array.

Now it's printed by full name.

Signed-off-by: Jan Friesse <jfriesse@redhat.com>
Reviewed-by: Steven Dake <sdake@redhat.com>
(cherry picked from commit f3457c5d49cfae6f6331a334dddf5266c71f61dd)

exec/cpg.c

@@ -317,6 +317,9 @@ static int notify_lib_totem_membership (
 static inline int zcb_all_free (
 	struct cpg_pd *cpd);
 
+static char *cpg_print_group_name (
+	const mar_cpg_name_t *group);
+
 /*
  * Library Handler Definition
  */
@@ -476,6 +479,36 @@ struct joinlist_msg {
 
 static struct req_exec_cpg_downlist g_req_exec_cpg_downlist;
 
+/*
+ * Function print group name. It's not reentrant
+ */
+static char *cpg_print_group_name(const mar_cpg_name_t *group)
+{
+	static char res[CPG_MAX_NAME_LENGTH * 4 + 1];
+	int dest_pos = 0;
+	char c;
+	int i;
+
+	for (i = 0; i < group->length; i++) {
+		c = group->value[i];
+
+		if (c >= ' ' && c < 0x7f && c != '\\') {
+			res[dest_pos++] = c;
+                } else {
+			if (c == '\\') {
+				res[dest_pos++] = '\\';
+				res[dest_pos++] = '\\';
+			} else {
+				snprintf(res + dest_pos, sizeof(res) - dest_pos, "\\x%02X", c);
+				dest_pos += 4;
+			}
+		}
+	}
+	res[dest_pos] = 0;
+
+	return (res);
+}
+
 static void cpg_sync_init (
 	const unsigned int *trans_list,
 	size_t trans_list_entries,
@@ -868,8 +901,8 @@ static void downlist_master_choose_and_send (void)
 
 		log_printf (LOG_DEBUG, "left_list_entries:%d", pcd->left_list_entries);
 		for (i=0; i<pcd->left_list_entries; i++) {
-			log_printf (LOG_DEBUG, "left_list[%d] group:%d, ip:%s, pid:%d",
-				i, pcd->cpg_group.value,
+			log_printf (LOG_DEBUG, "left_list[%d] group:%s, ip:%s, pid:%d",
+				i, cpg_print_group_name(&group),
 				(char*)api->totem_ifaces_print(pcd->left_list[i].nodeid),
 				pcd->left_list[i].pid);
 		}
@@ -900,8 +933,8 @@ static void joinlist_inform_clients (void)
 
 		stored_msg = list_entry(iter, struct joinlist_msg, list);
 
-		log_printf (LOG_DEBUG, "joinlist_messages[%u] group:%d, ip:%s, pid:%d",
-			i++, stored_msg->group_name.value,
+		log_printf (LOG_DEBUG, "joinlist_messages[%u] group:%s, ip:%s, pid:%d",
+			i++, cpg_print_group_name(&stored_msg->group_name),
 			(char*)api->totem_ifaces_print(stored_msg->sender_nodeid),
 			stored_msg->pid);