SHMINFO
int display = SHMINFO | MSGINFO | SEMINFO;
display = SHMINFO;
if (display & (SHMINFO | SHMTOTAL))
if (!(display & SHMINFO)) {
if (display & SHMINFO) {
if ((display & (SHMINFO | SHMTOTAL)) &&
if (display & SHMINFO) {
if (display & (SHMINFO | SHMTOTAL)) {