11 struct ucounts init_ucounts = {
134 static struct ucounts *find_ucounts(struct user_namespace *ns, kuid_t uid, struct hlist_head *hashe…  in find_ucounts()
136 	struct ucounts *ucounts;  in find_ucounts()  local
138 	hlist_for_each_entry(ucounts, hashent, node) {  in find_ucounts()
139 		if (uid_eq(ucounts->uid, uid) && (ucounts->ns == ns))  in find_ucounts()
140 			return ucounts;  in find_ucounts()
145 static void hlist_add_ucounts(struct ucounts *ucounts)  in hlist_add_ucounts()  argument
147 	struct hlist_head *hashent = ucounts_hashentry(ucounts->ns, ucounts->uid);  in hlist_add_ucounts()
149 	hlist_add_head(&ucounts->node, hashent);  in hlist_add_ucounts()
153 struct ucounts *get_ucounts(struct ucounts *ucounts)  in get_ucounts()  argument
155 	if (ucounts && atomic_add_negative(1, &ucounts->count)) {  in get_ucounts()
156 		put_ucounts(ucounts);  in get_ucounts()
157 		ucounts = NULL;  in get_ucounts()
159 	return ucounts;  in get_ucounts()
162 struct ucounts *alloc_ucounts(struct user_namespace *ns, kuid_t uid)  in alloc_ucounts()
165 	struct ucounts *ucounts, *new;  in alloc_ucounts()  local
169 	ucounts = find_ucounts(ns, uid, hashent);  in alloc_ucounts()
170 	if (!ucounts) {  in alloc_ucounts()
182 		ucounts = find_ucounts(ns, uid, hashent);  in alloc_ucounts()
183 		if (ucounts) {  in alloc_ucounts()
191 	overflow = atomic_add_negative(1, &ucounts->count);  in alloc_ucounts()
194 		put_ucounts(ucounts);  in alloc_ucounts()
197 	return ucounts;  in alloc_ucounts()
200 void put_ucounts(struct ucounts *ucounts)  in put_ucounts()  argument
204 	if (atomic_dec_and_lock_irqsave(&ucounts->count, &ucounts_lock, flags)) {  in put_ucounts()
205 		hlist_del_init(&ucounts->node);  in put_ucounts()
207 		kfree(ucounts);  in put_ucounts()
225 struct ucounts *inc_ucount(struct user_namespace *ns, kuid_t uid,  in inc_ucount()
228 	struct ucounts *ucounts, *iter, *bad;  in inc_ucount()  local
230 	ucounts = alloc_ucounts(ns, uid);  in inc_ucount()
231 	for (iter = ucounts; iter; iter = tns->ucounts) {  in inc_ucount()
238 	return ucounts;  in inc_ucount()
241 	for (iter = ucounts; iter != bad; iter = iter->ns->ucounts)  in inc_ucount()
244 	put_ucounts(ucounts);  in inc_ucount()
248 void dec_ucount(struct ucounts *ucounts, enum ucount_type type)  in dec_ucount()  argument
250 	struct ucounts *iter;  in dec_ucount()
251 	for (iter = ucounts; iter; iter = iter->ns->ucounts) {  in dec_ucount()
255 	put_ucounts(ucounts);  in dec_ucount()
258 long inc_rlimit_ucounts(struct ucounts *ucounts, enum ucount_type type, long v)  in inc_rlimit_ucounts()  argument
260 	struct ucounts *iter;  in inc_rlimit_ucounts()
263 	for (iter = ucounts; iter; iter = iter->ns->ucounts) {  in inc_rlimit_ucounts()
268 		else if (iter == ucounts)  in inc_rlimit_ucounts()
274 bool dec_rlimit_ucounts(struct ucounts *ucounts, enum ucount_type type, long v)  in dec_rlimit_ucounts()  argument
276 	struct ucounts *iter;  in dec_rlimit_ucounts()
278 	for (iter = ucounts; iter; iter = iter->ns->ucounts) {  in dec_rlimit_ucounts()
281 		if (iter == ucounts)  in dec_rlimit_ucounts()
287 static void do_dec_rlimit_put_ucounts(struct ucounts *ucounts,  in do_dec_rlimit_put_ucounts()  argument
288 				struct ucounts *last, enum ucount_type type)  in do_dec_rlimit_put_ucounts()
290 	struct ucounts *iter, *next;  in do_dec_rlimit_put_ucounts()
291 	for (iter = ucounts; iter != last; iter = next) {  in do_dec_rlimit_put_ucounts()
294 		next = iter->ns->ucounts;  in do_dec_rlimit_put_ucounts()
300 void dec_rlimit_put_ucounts(struct ucounts *ucounts, enum ucount_type type)  in dec_rlimit_put_ucounts()  argument
302 	do_dec_rlimit_put_ucounts(ucounts, NULL, type);  in dec_rlimit_put_ucounts()
305 long inc_rlimit_get_ucounts(struct ucounts *ucounts, enum ucount_type type)  in inc_rlimit_get_ucounts()  argument
308 	struct ucounts *iter;  in inc_rlimit_get_ucounts()
311 	for (iter = ucounts; iter; iter = iter->ns->ucounts) {  in inc_rlimit_get_ucounts()
316 		if (iter == ucounts)  in inc_rlimit_get_ucounts()
332 	do_dec_rlimit_put_ucounts(ucounts, iter, type);  in inc_rlimit_get_ucounts()
336 bool is_ucounts_overlimit(struct ucounts *ucounts, enum ucount_type type, unsigned long max)  in is_ucounts_overlimit()  argument
338 	struct ucounts *iter;  in is_ucounts_overlimit()
339 	if (get_ucounts_value(ucounts, type) > max)  in is_ucounts_overlimit()
341 	for (iter = ucounts; iter; iter = iter->ns->ucounts) {  in is_ucounts_overlimit()