SG_BEGIN_DECL
XBT_PUBLIC sg_netzone_t sg_zone_get_root();
-XBT_PUBLIC const char* sg_zone_get_name(sg_netzone_t zone);
+XBT_PUBLIC const char* sg_zone_get_name(const_sg_netzone_t zone);
XBT_PUBLIC sg_netzone_t sg_zone_get_by_name(const char* name);
-XBT_PUBLIC void sg_zone_get_sons(sg_netzone_t zone, xbt_dict_t whereto);
-XBT_PUBLIC const char* sg_zone_get_property_value(sg_netzone_t as, const char* name);
-XBT_PUBLIC void sg_zone_set_property_value(sg_netzone_t netzone, const char* name, char* value);
-XBT_PUBLIC void sg_zone_get_hosts(sg_netzone_t zone, xbt_dynar_t whereto);
+XBT_PUBLIC void sg_zone_get_sons(const_sg_netzone_t zone, xbt_dict_t whereto);
+XBT_PUBLIC const char* sg_zone_get_property_value(const_sg_netzone_t as, const char* name);
+XBT_PUBLIC void sg_zone_set_property_value(sg_netzone_t netzone, const char* name, const char* value);
+XBT_PUBLIC void sg_zone_get_hosts(const_sg_netzone_t zone, xbt_dynar_t whereto);
SG_END_DECL