if(common_area.magic != COMMON_AREA_MAGIC || common_area.version != 1) {
/* Initialize common area */
memset(&common_area, 0, sizeof(common_area));
if(common_area.magic != COMMON_AREA_MAGIC || common_area.version != 1) {
/* Initialize common area */
memset(&common_area, 0, sizeof(common_area));