ipcperm_new2old
ipcperm_new2old(&msqbuf.msg_perm, &msqold.msg_perm);
ipcperm_new2old(&dsbuf.sem_perm, &dsold.sem_perm);
ipcperm_new2old(&shmseg->u.shm_perm, &outbuf.shm_perm);
ipcperm_new2old(&buf.shm_perm, &old.shm_perm);
void ipcperm_new2old(struct ipc_perm *, struct ipc_perm_old *);