IPC_PRIVATE
undoid = _shmget(IPC_PRIVATE, PAGE_SIZE, IPC_CREAT | IPC_EXCL | 0600,
if (key != IPC_PRIVATE) {
if (key == IPC_PRIVATE || (msgflg & IPC_CREAT)) {
if (key != IPC_PRIVATE) {
if (key == IPC_PRIVATE || (semflg & IPC_CREAT)) {
shmseg->shm_perm.key = IPC_PRIVATE;
if (uap->key != IPC_PRIVATE) {
if (target_key == IPC_PRIVATE) {
if (shmget_msg->key != IPC_PRIVATE) {
shmseg->shm_perm.key = IPC_PRIVATE;