57  * aa_ns_name - Find the ns name to display for @view from @curr
71 		/* at this point if a ns is visible it is in a view ns  in aa_ns_name()
72 		 * thus the curr ns.hname is a prefix of its name.  in aa_ns_name()
109 	struct aa_ns *ns;  in alloc_ns()  local
111 	ns = kzalloc(sizeof(*ns), GFP_KERNEL);  in alloc_ns()
112 	AA_DEBUG("%s(%p)\n", __func__, ns);  in alloc_ns()
113 	if (!ns)  in alloc_ns()
115 	if (!aa_policy_init(&ns->base, prefix, name, GFP_KERNEL))  in alloc_ns()
118 	INIT_LIST_HEAD(&ns->sub_ns);  in alloc_ns()
119 	INIT_LIST_HEAD(&ns->rawdata_list);  in alloc_ns()
120 	mutex_init(&ns->lock);  in alloc_ns()
121 	init_waitqueue_head(&ns->wait);  in alloc_ns()
124 	ns->unconfined = alloc_unconfined("unconfined");  in alloc_ns()
125 	if (!ns->unconfined)  in alloc_ns()
127 	/* ns and ns->unconfined share ns->unconfined refcount */  in alloc_ns()
128 	ns->unconfined->ns = ns;  in alloc_ns()
130 	atomic_set(&ns->uniq_null, 0);  in alloc_ns()
132 	aa_labelset_init(&ns->labels);  in alloc_ns()
134 	return ns;  in alloc_ns()
137 	kfree_sensitive(ns->base.hname);  in alloc_ns()
139 	kfree_sensitive(ns);  in alloc_ns()
145  * @ns: the namespace to free  (MAYBE NULL)
150 void aa_free_ns(struct aa_ns *ns)  in aa_free_ns()  argument
152 	if (!ns)  in aa_free_ns()
155 	aa_policy_destroy(&ns->base);  in aa_free_ns()
156 	aa_labelset_destroy(&ns->labels);  in aa_free_ns()
157 	aa_put_ns(ns->parent);  in aa_free_ns()
159 	ns->unconfined->ns = NULL;  in aa_free_ns()
160 	aa_free_profile(ns->unconfined);  in aa_free_ns()
161 	kfree_sensitive(ns);  in aa_free_ns()
177 	struct aa_ns *ns = NULL;  in aa_findn_ns()  local
180 	ns = aa_get_ns(__aa_findn_ns(&root->sub_ns, name, n));  in aa_findn_ns()
183 	return ns;  in aa_findn_ns()
204  * @hname: hierarchical ns name  (NOT NULL)
209  * Returns: unrefcounted ns pointer or NULL if not found
215 	struct aa_ns *ns = view;  in __aa_lookupn_ns()  local
220 		ns = __aa_findn_ns(&ns->sub_ns, hname, split - hname);  in __aa_lookupn_ns()
221 		if (!ns)  in __aa_lookupn_ns()
229 		return __aa_findn_ns(&ns->sub_ns, hname, n);  in __aa_lookupn_ns()
246 	struct aa_ns *ns = NULL;  in aa_lookupn_ns()  local
249 	ns = aa_get_ns(__aa_lookupn_ns(view, name, n));  in aa_lookupn_ns()
252 	return ns;  in aa_lookupn_ns()
258 	struct aa_ns *ns;  in __aa_create_ns()  local
265 	ns = alloc_ns(parent->base.hname, name);  in __aa_create_ns()
266 	if (!ns)  in __aa_create_ns()
268 	ns->level = parent->level + 1;  in __aa_create_ns()
269 	mutex_lock_nested(&ns->lock, ns->level);  in __aa_create_ns()
270 	error = __aafs_ns_mkdir(ns, ns_subns_dir(parent), name, dir);  in __aa_create_ns()
272 		AA_ERROR("Failed to create interface for ns %s\n",  in __aa_create_ns()
273 			 ns->base.name);  in __aa_create_ns()
274 		mutex_unlock(&ns->lock);  in __aa_create_ns()
275 		aa_free_ns(ns);  in __aa_create_ns()
278 	ns->parent = aa_get_ns(parent);  in __aa_create_ns()
279 	list_add_rcu(&ns->base.list, &parent->sub_ns);  in __aa_create_ns()
281 	aa_get_ns(ns);  in __aa_create_ns()
282 	mutex_unlock(&ns->lock);  in __aa_create_ns()
284 	return ns;  in __aa_create_ns()
288  * __aa_find_or_create_ns - create an ns, fail if it already exists
291  * @dir: if not null the dir to put the ns entries in
293  * Returns: the a refcounted ns that has been add or an ERR_PTR
298 	struct aa_ns *ns;  in __aa_find_or_create_ns()  local
302 	/* try and find the specified ns */  in __aa_find_or_create_ns()
304 	ns = aa_get_ns(__aa_find_ns(&parent->sub_ns, name));  in __aa_find_or_create_ns()
305 	if (!ns)  in __aa_find_or_create_ns()
306 		ns = __aa_create_ns(parent, name, dir);  in __aa_find_or_create_ns()
308 		ns = ERR_PTR(-EEXIST);  in __aa_find_or_create_ns()
311 	return ns;  in __aa_find_or_create_ns()
316  * @parent: ns to treat as parent
323 	struct aa_ns *ns;  in aa_prepare_ns()  local
326 	/* try and find the specified ns and if it doesn't exist create it */  in aa_prepare_ns()
328 	ns = aa_get_ns(__aa_find_ns(&parent->sub_ns, name));  in aa_prepare_ns()
329 	if (!ns)  in aa_prepare_ns()
330 		ns = __aa_create_ns(parent, name, NULL);  in aa_prepare_ns()
334 	return ns;  in aa_prepare_ns()
340  * destroy_ns - remove everything contained by @ns
341  * @ns: namespace to have it contents removed  (NOT NULL)
343 static void destroy_ns(struct aa_ns *ns)  in destroy_ns()  argument
345 	if (!ns)  in destroy_ns()
348 	mutex_lock_nested(&ns->lock, ns->level);  in destroy_ns()
350 	__aa_profile_list_release(&ns->base.profiles);  in destroy_ns()
353 	__ns_list_release(&ns->sub_ns);  in destroy_ns()
355 	if (ns->parent) {  in destroy_ns()
358 		write_lock_irqsave(&ns->labels.lock, flags);  in destroy_ns()
359 		__aa_proxy_redirect(ns_unconfined(ns),  in destroy_ns()
360 				    ns_unconfined(ns->parent));  in destroy_ns()
361 		write_unlock_irqrestore(&ns->labels.lock, flags);  in destroy_ns()
363 	__aafs_ns_rmdir(ns);  in destroy_ns()
364 	mutex_unlock(&ns->lock);  in destroy_ns()
369  * @ns: namespace to be removed  (NOT NULL)
371  * Requires: ns->parent->lock be held and ns removed from parent.
373 void __aa_remove_ns(struct aa_ns *ns)  in __aa_remove_ns()  argument
375 	/* remove ns from namespace list */  in __aa_remove_ns()
376 	list_del_rcu(&ns->base.list);  in __aa_remove_ns()
377 	destroy_ns(ns);  in __aa_remove_ns()
378 	aa_put_ns(ns);  in __aa_remove_ns()
389 	struct aa_ns *ns, *tmp;  in __ns_list_release()  local
391 	list_for_each_entry_safe(ns, tmp, head, base.list)  in __ns_list_release()
392 		__aa_remove_ns(ns);  in __ns_list_release()
418 	root_ns->unconfined->ns = aa_get_ns(root_ns);  in aa_alloc_root_ns()
428 	 struct aa_ns *ns = root_ns;  in aa_free_root_ns()  local
433 	 destroy_ns(ns);  in aa_free_root_ns()
434 	 aa_put_ns(ns);  in aa_free_root_ns()