22 	struct ipc_namespace *ns;  in create_ipc_ns()  local
25 	ns = kmalloc(sizeof(struct ipc_namespace), GFP_KERNEL);  in create_ipc_ns()
26 	if (ns == NULL)  in create_ipc_ns()
29 	err = proc_alloc_inum(&ns->proc_inum);  in create_ipc_ns()
31 		kfree(ns);  in create_ipc_ns()
35 	atomic_set(&ns->count, 1);  in create_ipc_ns()
36 	err = mq_init_ns(ns);  in create_ipc_ns()
38 		proc_free_inum(ns->proc_inum);  in create_ipc_ns()
39 		kfree(ns);  in create_ipc_ns()
44 	sem_init_ns(ns);  in create_ipc_ns()
45 	msg_init_ns(ns);  in create_ipc_ns()
46 	shm_init_ns(ns);  in create_ipc_ns()
54 	register_ipcns_notifier(ns);  in create_ipc_ns()
56 	ns->user_ns = get_user_ns(user_ns);  in create_ipc_ns()
58 	return ns;  in create_ipc_ns()
62 	struct user_namespace *user_ns, struct ipc_namespace *ns)  in copy_ipcs()  argument
65 		return get_ipc_ns(ns);  in copy_ipcs()
66 	return create_ipc_ns(user_ns, ns);  in copy_ipcs()
77 void free_ipcs(struct ipc_namespace *ns, struct ipc_ids *ids,  in free_ipcs()  argument
94 		free(ns, perm);  in free_ipcs()
100 static void free_ipc_ns(struct ipc_namespace *ns)  in free_ipc_ns()  argument
110 	unregister_ipcns_notifier(ns);  in free_ipc_ns()
111 	sem_exit_ns(ns);  in free_ipc_ns()
112 	msg_exit_ns(ns);  in free_ipc_ns()
113 	shm_exit_ns(ns);  in free_ipc_ns()
121 	put_user_ns(ns->user_ns);  in free_ipc_ns()
122 	proc_free_inum(ns->proc_inum);  in free_ipc_ns()
123 	kfree(ns);  in free_ipc_ns()
142 void put_ipc_ns(struct ipc_namespace *ns)  in put_ipc_ns()  argument
144 	if (atomic_dec_and_lock(&ns->count, &mq_lock)) {  in put_ipc_ns()
145 		mq_clear_sbinfo(ns);  in put_ipc_ns()
147 		mq_put_mnt(ns);  in put_ipc_ns()
148 		free_ipc_ns(ns);  in put_ipc_ns()
154 	struct ipc_namespace *ns = NULL;  in ipcns_get()  local
160 		ns = get_ipc_ns(nsproxy->ipc_ns);  in ipcns_get()
163 	return ns;  in ipcns_get()
166 static void ipcns_put(void *ns)  in ipcns_put()  argument
168 	return put_ipc_ns(ns);  in ipcns_put()
173 	struct ipc_namespace *ns = new;  in ipcns_install()  local
174 	if (!ns_capable(ns->user_ns, CAP_SYS_ADMIN) ||  in ipcns_install()
181 	nsproxy->ipc_ns = get_ipc_ns(ns);  in ipcns_install()
187 	struct ipc_namespace *ns = vp;  in ipcns_inum()  local
189 	return ns->proc_inum;  in ipcns_inum()