IPCID_TO_SEQ
if (msqptr->msg_perm._seq != IPCID_TO_SEQ(msqidr)) {
msqptr->msg_perm._seq != IPCID_TO_SEQ(msqidr)) {
if (msqptr->msg_perm._seq != IPCID_TO_SEQ(msqid)) {
if (msqptr->msg_perm._seq != IPCID_TO_SEQ(msqidr)) {
semaptr->sem_perm._seq != IPCID_TO_SEQ(semid)) {
seq = IPCID_TO_SEQ(usemid);
if (shmseg->shm_perm._seq != IPCID_TO_SEQ(shmid))