29 static struct ucounts *inc_ipc_namespaces(struct user_namespace *ns)  in inc_ipc_namespaces()  argument
31 	return inc_ucount(ns, current_euid(), UCOUNT_IPC_NAMESPACES);  in inc_ipc_namespaces()
42 	struct ipc_namespace *ns;  in create_ipc_ns()  local
61 	ns = kzalloc(sizeof(struct ipc_namespace), GFP_KERNEL_ACCOUNT);  in create_ipc_ns()
62 	if (ns == NULL)  in create_ipc_ns()
65 	err = ns_common_init(ns);  in create_ipc_ns()
69 	ns_tree_gen_id(ns);  in create_ipc_ns()
70 	ns->user_ns = get_user_ns(user_ns);  in create_ipc_ns()
71 	ns->ucounts = ucounts;  in create_ipc_ns()
73 	err = mq_init_ns(ns);  in create_ipc_ns()
78 	if (!setup_mq_sysctls(ns))  in create_ipc_ns()
81 	if (!setup_ipc_sysctls(ns))  in create_ipc_ns()
84 	err = msg_init_ns(ns);  in create_ipc_ns()
88 	sem_init_ns(ns);  in create_ipc_ns()
89 	shm_init_ns(ns);  in create_ipc_ns()
90 	ns_tree_add_raw(ns);  in create_ipc_ns()
92 	return ns;  in create_ipc_ns()
95 	retire_ipc_sysctls(ns);  in create_ipc_ns()
97 	retire_mq_sysctls(ns);  in create_ipc_ns()
99 	mntput(ns->mq_mnt);  in create_ipc_ns()
101 	put_user_ns(ns->user_ns);  in create_ipc_ns()
102 	ns_common_free(ns);  in create_ipc_ns()
104 	kfree(ns);  in create_ipc_ns()
112 	struct user_namespace *user_ns, struct ipc_namespace *ns)  in copy_ipcs()  argument
115 		return get_ipc_ns(ns);  in copy_ipcs()
116 	return create_ipc_ns(user_ns, ns);  in copy_ipcs()
127 void free_ipcs(struct ipc_namespace *ns, struct ipc_ids *ids,  in free_ipcs()  argument
144 		free(ns, perm);  in free_ipcs()
150 static void free_ipc_ns(struct ipc_namespace *ns)  in free_ipc_ns()  argument
156 	mntput(ns->mq_mnt);  in free_ipc_ns()
157 	sem_exit_ns(ns);  in free_ipc_ns()
158 	msg_exit_ns(ns);  in free_ipc_ns()
159 	shm_exit_ns(ns);  in free_ipc_ns()
161 	retire_mq_sysctls(ns);  in free_ipc_ns()
162 	retire_ipc_sysctls(ns);  in free_ipc_ns()
164 	dec_ipc_namespaces(ns->ucounts);  in free_ipc_ns()
165 	put_user_ns(ns->user_ns);  in free_ipc_ns()
166 	ns_common_free(ns);  in free_ipc_ns()
167 	kfree(ns);  in free_ipc_ns()
202 void put_ipc_ns(struct ipc_namespace *ns)  in put_ipc_ns()  argument
204 	if (ns_ref_put_and_lock(ns, &mq_lock)) {  in put_ipc_ns()
205 		mq_clear_sbinfo(ns);  in put_ipc_ns()
208 		ns_tree_remove(ns);  in put_ipc_ns()
209 		if (llist_add(&ns->mnt_llist, &free_ipc_list))  in put_ipc_ns()
216 	struct ipc_namespace *ns = NULL;  in ipcns_get()  local
222 		ns = get_ipc_ns(nsproxy->ipc_ns);  in ipcns_get()
225 	return ns ? &ns->ns : NULL;  in ipcns_get()
228 static void ipcns_put(struct ns_common *ns)  in ipcns_put()  argument
230 	return put_ipc_ns(to_ipc_ns(ns));  in ipcns_put()
236 	struct ipc_namespace *ns = to_ipc_ns(new);  in ipcns_install()  local
237 	if (!ns_capable(ns->user_ns, CAP_SYS_ADMIN) ||  in ipcns_install()
242 	nsproxy->ipc_ns = get_ipc_ns(ns);  in ipcns_install()
246 static struct user_namespace *ipcns_owner(struct ns_common *ns)  in ipcns_owner()  argument
248 	return to_ipc_ns(ns)->user_ns;  in ipcns_owner()