11 struct ucounts init_ucounts = {
132 static struct ucounts *find_ucounts(struct user_namespace *ns, kuid_t uid,  in find_ucounts()
135 	struct ucounts *ucounts;  in find_ucounts()  local
139 	hlist_nulls_for_each_entry_rcu(ucounts, pos, hashent, node) {  in find_ucounts()
140 		if (uid_eq(ucounts->uid, uid) && (ucounts->ns == ns)) {  in find_ucounts()
141 			if (rcuref_get(&ucounts->count))  in find_ucounts()
142 				return ucounts;  in find_ucounts()
148 static void hlist_add_ucounts(struct ucounts *ucounts)  in hlist_add_ucounts()  argument
150 	struct hlist_nulls_head *hashent = ucounts_hashentry(ucounts->ns, ucounts->uid);  in hlist_add_ucounts()
153 	hlist_nulls_add_head_rcu(&ucounts->node, hashent);  in hlist_add_ucounts()
157 struct ucounts *alloc_ucounts(struct user_namespace *ns, kuid_t uid)  in alloc_ucounts()
160 	struct ucounts *ucounts, *new;  in alloc_ucounts()  local
162 	ucounts = find_ucounts(ns, uid, hashent);  in alloc_ucounts()
163 	if (ucounts)  in alloc_ucounts()
164 		return ucounts;  in alloc_ucounts()
175 	ucounts = find_ucounts(ns, uid, hashent);  in alloc_ucounts()
176 	if (ucounts) {  in alloc_ucounts()
179 		return ucounts;  in alloc_ucounts()
188 void put_ucounts(struct ucounts *ucounts)  in put_ucounts()  argument
192 	if (rcuref_put(&ucounts->count)) {  in put_ucounts()
194 		hlist_nulls_del_rcu(&ucounts->node);  in put_ucounts()
197 		put_user_ns(ucounts->ns);  in put_ucounts()
198 		kfree_rcu(ucounts, rcu);  in put_ucounts()
216 struct ucounts *inc_ucount(struct user_namespace *ns, kuid_t uid,  in inc_ucount()
219 	struct ucounts *ucounts, *iter, *bad;  in inc_ucount()  local
221 	ucounts = alloc_ucounts(ns, uid);  in inc_ucount()
222 	for (iter = ucounts; iter; iter = tns->ucounts) {  in inc_ucount()
229 	return ucounts;  in inc_ucount()
232 	for (iter = ucounts; iter != bad; iter = iter->ns->ucounts)  in inc_ucount()
235 	put_ucounts(ucounts);  in inc_ucount()
239 void dec_ucount(struct ucounts *ucounts, enum ucount_type type)  in dec_ucount()  argument
241 	struct ucounts *iter;  in dec_ucount()
242 	for (iter = ucounts; iter; iter = iter->ns->ucounts) {  in dec_ucount()
246 	put_ucounts(ucounts);  in dec_ucount()
249 long inc_rlimit_ucounts(struct ucounts *ucounts, enum rlimit_type type, long v)  in inc_rlimit_ucounts()  argument
251 	struct ucounts *iter;  in inc_rlimit_ucounts()
255 	for (iter = ucounts; iter; iter = iter->ns->ucounts) {  in inc_rlimit_ucounts()
259 		else if (iter == ucounts)  in inc_rlimit_ucounts()
266 bool dec_rlimit_ucounts(struct ucounts *ucounts, enum rlimit_type type, long v)  in dec_rlimit_ucounts()  argument
268 	struct ucounts *iter;  in dec_rlimit_ucounts()
270 	for (iter = ucounts; iter; iter = iter->ns->ucounts) {  in dec_rlimit_ucounts()
273 		if (iter == ucounts)  in dec_rlimit_ucounts()
279 static void do_dec_rlimit_put_ucounts(struct ucounts *ucounts,  in do_dec_rlimit_put_ucounts()  argument
280 				struct ucounts *last, enum rlimit_type type)  in do_dec_rlimit_put_ucounts()
282 	struct ucounts *iter, *next;  in do_dec_rlimit_put_ucounts()
283 	for (iter = ucounts; iter != last; iter = next) {  in do_dec_rlimit_put_ucounts()
286 		next = iter->ns->ucounts;  in do_dec_rlimit_put_ucounts()
292 void dec_rlimit_put_ucounts(struct ucounts *ucounts, enum rlimit_type type)  in dec_rlimit_put_ucounts()  argument
294 	do_dec_rlimit_put_ucounts(ucounts, NULL, type);  in dec_rlimit_put_ucounts()
297 long inc_rlimit_get_ucounts(struct ucounts *ucounts, enum rlimit_type type,  in inc_rlimit_get_ucounts()  argument
301 	struct ucounts *iter;  in inc_rlimit_get_ucounts()
305 	for (iter = ucounts; iter; iter = iter->ns->ucounts) {  in inc_rlimit_get_ucounts()
309 		if (iter == ucounts)  in inc_rlimit_get_ucounts()
326 	do_dec_rlimit_put_ucounts(ucounts, iter, type);  in inc_rlimit_get_ucounts()
330 bool is_rlimit_overlimit(struct ucounts *ucounts, enum rlimit_type type, unsigned long rlimit)  in is_rlimit_overlimit()  argument
332 	struct ucounts *iter;  in is_rlimit_overlimit()
336 	for (iter = ucounts; iter; iter = iter->ns->ucounts) {  in is_rlimit_overlimit()