IPC_NOWAIT
if ((msgflg & MSG_EXCEPT) || !(msgflg & IPC_NOWAIT))
if (msgflg & IPC_NOWAIT) {
if (msgflg & IPC_NOWAIT) {
if (sop->sem_flg & IPC_NOWAIT)
return sop->sem_flg & IPC_NOWAIT ? -EAGAIN : 1;
MAX_MSG_SIZE, i, IPC_NOWAIT | MSG_COPY);
IPC_NOWAIT) != 0) {
IPC_NOWAIT) != 0) {
msgque->messages[i].msize, IPC_NOWAIT) != 0) {
0, IPC_NOWAIT);