C++ (Cpp) ipc_lock_check Examples

Example #1

static inline struct shmid_kernel *shm_lock_check(struct ipc_namespace *ns,
						int id)
{
	struct kern_ipc_perm *ipcp = ipc_lock_check(&shm_ids(ns), id);

	return container_of(ipcp, struct shmid_kernel, shm_perm);
}

Example #2

static inline struct msg_queue *msg_lock_check(struct ipc_namespace *ns,
						int id)
{
	struct kern_ipc_perm *ipcp = ipc_lock_check(&msg_ids(ns), id);

	if (IS_ERR(ipcp))
		return (struct msg_queue *)ipcp;

	return container_of(ipcp, struct msg_queue, q_perm);
}

Example #3

static inline struct sem_array *sem_lock_check(struct ipc_namespace *ns,
						int id)
{
	struct kern_ipc_perm *ipcp = ipc_lock_check(&sem_ids(ns), id);

	if (IS_ERR(ipcp))
		return (struct sem_array *)ipcp;

	return container_of(ipcp, struct sem_array, sem_perm);
}