linux-master/ipc/sem.c

169 #define sem_ids(ns)	((ns)->ids[IPC_SEM_IDS])
262 	free_ipcs(ns, &sem_ids(ns), freeary);
480 	struct kern_ipc_perm *ipcp = ipc_obtain_object_idr(&sem_ids(ns), id);
491 	struct kern_ipc_perm *ipcp = ipc_obtain_object_check(&sem_ids(ns), id);
507 	ipc_rmid(&sem_ids(ns), &s->sem_perm);
529  * Called with sem_ids.rwsem held (as a writer)
574 	retval = ipc_addid(&sem_ids(ns), &sma->sem_perm, ns->sc_semmni);
589  * Called with sem_ids.rwsem and ipcp locked.
621 	return ipcget(ns, &sem_ids(ns), &sem_ops, &sem_params);
1139 /* Free a semaphore set. freeary() is called with sem_ids.rwsem locked
1140  * as a writer and the spinlock for this semaphore set hold. sem_ids.rwsem
1328 	down_read(&sem_ids(ns).rwsem);
1330 		seminfo.semusz = sem_ids(ns).in_use;
1336 	max_idx = ipc_get_maxidx(&sem_ids(ns));
1337 	up_read(&sem_ids(ns).rwsem);
1608 	down_write(&sem_ids(ns).rwsem);
1611 	ipcp = ipcctl_obtain_check(ns, &sem_ids(ns), semid, cmd,
1647 	up_write(&sem_ids(ns).rwsem);