40 static inline struct key *keyring_ptr_to_key(const struct assoc_array_ptr *x)  in keyring_ptr_to_key()
43 	return (struct key *)((unsigned long)object & ~KEYRING_PTR_SUBTYPE);  in keyring_ptr_to_key()
45 static inline void *keyring_key_to_ptr(struct key *key)  in keyring_key_to_ptr()  argument
47 	if (key->type == &key_type_keyring)  in keyring_key_to_ptr()
48 		return (void *)((unsigned long)key | KEYRING_PTR_SUBTYPE);  in keyring_key_to_ptr()
49 	return key;  in keyring_key_to_ptr()
76 static int keyring_instantiate(struct key *keyring,
78 static void keyring_revoke(struct key *keyring);
79 static void keyring_destroy(struct key *keyring);
80 static void keyring_describe(const struct key *keyring, struct seq_file *m);
81 static long keyring_read(const struct key *keyring,
107 static void keyring_publish_name(struct key *keyring)  in keyring_publish_name()
140 static int keyring_instantiate(struct key *keyring,  in keyring_instantiate()
305 	const struct key *key = keyring_ptr_to_key(object);  in keyring_get_object_key_chunk()  local
306 	return keyring_get_key_chunk(&key->index_key, level);  in keyring_get_object_key_chunk()
312 	const struct key *key = keyring_ptr_to_key(object);  in keyring_compare_object()  local
314 	return key->index_key.type == index_key->type &&  in keyring_compare_object()
315 		key->index_key.domain_tag == index_key->domain_tag &&  in keyring_compare_object()
316 		key->index_key.desc_len == index_key->desc_len &&  in keyring_compare_object()
317 		memcmp(key->index_key.description, index_key->description,  in keyring_compare_object()
327 	const struct key *key_a = keyring_ptr_to_key(object);  in keyring_diff_objects()
412 static void keyring_destroy(struct key *keyring)  in keyring_destroy()
427 		key_put(keyres->key);  in keyring_destroy()
437 static void keyring_describe(const struct key *keyring, struct seq_file *m)  in keyring_describe()
461 	const struct key *key = keyring_ptr_to_key(object);  in keyring_read_iterator()  local
464 	       key->type->name, key->serial, ctx->count, ctx->buflen);  in keyring_read_iterator()
469 	*ctx->buffer++ = key->serial;  in keyring_read_iterator()
470 	ctx->count += sizeof(key->serial);  in keyring_read_iterator()
481 static long keyring_read(const struct key *keyring,  in keyring_read()
517 struct key *keyring_alloc(const char *description, kuid_t uid, kgid_t gid,  in keyring_alloc()
521 			  struct key *dest)  in keyring_alloc()
523 	struct key *keyring;  in keyring_alloc()
554 int restrict_link_reject(struct key *keyring,  in restrict_link_reject()
557 			 struct key *restriction_key)  in restrict_link_reject()
565 bool key_default_cmp(const struct key *key,  in key_default_cmp()  argument
568 	return strcmp(key->description, match_data->raw_data) == 0;  in key_default_cmp()
577 	const struct key *key = keyring_ptr_to_key(object);  in keyring_search_iterator()  local
578 	unsigned long kflags = READ_ONCE(key->flags);  in keyring_search_iterator()
579 	short state = READ_ONCE(key->state);  in keyring_search_iterator()
581 	kenter("{%d}", key->serial);  in keyring_search_iterator()
584 	if (key->type != ctx->index_key.type) {  in keyring_search_iterator()
591 		time64_t expiry = READ_ONCE(key->expiry);  in keyring_search_iterator()
609 	if (!ctx->match_data.cmp(key, &ctx->match_data)) {  in keyring_search_iterator()
616 	    key_task_permission(make_key_ref(key, ctx->possessed),  in keyring_search_iterator()
633 	ctx->result = make_key_ref(key, ctx->possessed);  in keyring_search_iterator()
646 static int search_keyring(struct key *keyring, struct keyring_search_context *ctx)  in search_keyring()
663 static bool search_nested_keyrings(struct key *keyring,  in search_nested_keyrings()
667 		struct key *keyring;  in search_nested_keyrings()
675 	struct key *key;  in search_nested_keyrings()  local
781 		key = keyring_ptr_to_key(ptr);  in search_nested_keyrings()
793 		    key_task_permission(make_key_ref(key, ctx->possessed),  in search_nested_keyrings()
804 		keyring = key;  in search_nested_keyrings()
853 	key = key_ref_to_ptr(ctx->result);  in search_nested_keyrings()
854 	key_check(key);  in search_nested_keyrings()
856 		key->last_used_at = ctx->now;  in search_nested_keyrings()
902 	struct key *keyring;  in keyring_search_rcu()
952 	key_ref_t key;  in keyring_search()  local
964 	key = keyring_search_rcu(keyring, &ctx);  in keyring_search()
969 	return key;  in keyring_search()
997 static bool keyring_detect_restriction_cycle(const struct key *dest_keyring,  in keyring_detect_restriction_cycle()
1000 	while (keyres && keyres->key &&  in keyring_detect_restriction_cycle()
1001 	       keyres->key->type == &key_type_keyring) {  in keyring_detect_restriction_cycle()
1002 		if (keyres->key == dest_keyring)  in keyring_detect_restriction_cycle()
1005 		keyres = keyres->key->restrict_link;  in keyring_detect_restriction_cycle()
1024 	struct key *keyring;  in keyring_restrict()
1072 		key_put(restrict_link->key);  in keyring_restrict()
1101 	struct key *keyring, *key;  in find_key_to_update()  local
1119 	key = keyring_ptr_to_key(object);  in find_key_to_update()
1120 	if (key->flags & ((1 << KEY_FLAG_INVALIDATED) |  in find_key_to_update()
1125 	__key_get(key);  in find_key_to_update()
1126 	kleave(" = {%d}", key->serial);  in find_key_to_update()
1127 	return make_key_ref(key, is_key_possessed(keyring_ref));  in find_key_to_update()
1141 struct key *find_keyring_by_name(const char *name, bool uid_keyring)  in find_keyring_by_name()
1144 	struct key *keyring;  in find_keyring_by_name()
1193 	const struct key *key = keyring_ptr_to_key(object);  in keyring_detect_cycle_iterator()  local
1195 	kenter("{%d}", key->serial);  in keyring_detect_cycle_iterator()
1199 	if (key != ctx->match_data.raw_data)  in keyring_detect_cycle_iterator()
1213 static int keyring_detect_cycle(struct key *A, struct key *B)  in keyring_detect_cycle()
1236 int __key_link_lock(struct key *keyring,  in __key_link_lock()
1258 int __key_move_lock(struct key *l_keyring, struct key *u_keyring,  in __key_move_lock()
1292 int __key_link_begin(struct key *keyring,  in __key_link_begin()
1350 int __key_link_check_live_key(struct key *keyring, struct key *key)  in __key_link_check_live_key()  argument
1352 	if (key->type == &key_type_keyring)  in __key_link_check_live_key()
1355 		return keyring_detect_cycle(keyring, key);  in __key_link_check_live_key()
1367 void __key_link(struct key *keyring, struct key *key,  in __key_link()  argument
1370 	__key_get(key);  in __key_link()
1371 	assoc_array_insert_set_object(*_edit, keyring_key_to_ptr(key));  in __key_link()
1374 	notify_key(keyring, NOTIFY_KEY_LINKED, key_serial(key));  in __key_link()
1382 void __key_link_end(struct key *keyring,  in __key_link_end()
1407 static int __key_link_check_restriction(struct key *keyring, struct key *key)  in __key_link_check_restriction()  argument
1411 	return keyring->restrict_link->check(keyring, key->type, &key->payload,  in __key_link_check_restriction()
1412 					     keyring->restrict_link->key);  in __key_link_check_restriction()
1435 int key_link(struct key *keyring, struct key *key)  in key_link()  argument
1443 	key_check(key);  in key_link()
1445 	ret = __key_link_lock(keyring, &key->index_key);  in key_link()
1449 	ret = __key_link_begin(keyring, &key->index_key, &edit);  in key_link()
1454 	ret = __key_link_check_restriction(keyring, key);  in key_link()
1456 		ret = __key_link_check_live_key(keyring, key);  in key_link()
1458 		__key_link(keyring, key, &edit);  in key_link()
1461 	__key_link_end(keyring, &key->index_key, edit);  in key_link()
1471 static int __key_unlink_lock(struct key *keyring)  in __key_unlink_lock()
1484 static int __key_unlink_begin(struct key *keyring, struct key *key,  in __key_unlink_begin()  argument
1492 				  &key->index_key);  in __key_unlink_begin()
1506 static void __key_unlink(struct key *keyring, struct key *key,  in __key_unlink()  argument
1510 	notify_key(keyring, NOTIFY_KEY_UNLINKED, key_serial(key));  in __key_unlink()
1518 static void __key_unlink_end(struct key *keyring,  in __key_unlink_end()  argument
1519 			     struct key *key,  in __key_unlink_end()
1545 int key_unlink(struct key *keyring, struct key *key)  in key_unlink()  argument
1551 	key_check(key);  in key_unlink()
1557 	ret = __key_unlink_begin(keyring, key, &edit);  in key_unlink()
1559 		__key_unlink(keyring, key, &edit);  in key_unlink()
1560 	__key_unlink_end(keyring, key, edit);  in key_unlink()
1590 int key_move(struct key *key,  in key_move()  argument
1591 	     struct key *from_keyring,  in key_move()
1592 	     struct key *to_keyring,  in key_move()
1598 	kenter("%d,%d,%d", key->serial, from_keyring->serial, to_keyring->serial);  in key_move()
1603 	key_check(key);  in key_move()
1607 	ret = __key_move_lock(from_keyring, to_keyring, &key->index_key);  in key_move()
1610 	ret = __key_unlink_begin(from_keyring, key, &from_edit);  in key_move()
1613 	ret = __key_link_begin(to_keyring, &key->index_key, &to_edit);  in key_move()
1621 	ret = __key_link_check_restriction(to_keyring, key);  in key_move()
1624 	ret = __key_link_check_live_key(to_keyring, key);  in key_move()
1628 	__key_unlink(from_keyring, key, &from_edit);  in key_move()
1629 	__key_link(to_keyring, key, &to_edit);  in key_move()
1631 	__key_link_end(to_keyring, &key->index_key, to_edit);  in key_move()
1632 	__key_unlink_end(from_keyring, key, from_edit);  in key_move()
1647 int keyring_clear(struct key *keyring)  in keyring_clear()
1678 static void keyring_revoke(struct key *keyring)  in keyring_revoke()
1692 	struct key *key = keyring_ptr_to_key(object);  in keyring_gc_select_iterator()  local
1695 	if (key_is_dead(key, *limit))  in keyring_gc_select_iterator()
1697 	key_get(key);  in keyring_gc_select_iterator()
1703 	const struct key *key = keyring_ptr_to_key(object);  in keyring_gc_check_iterator()  local
1706 	key_check(key);  in keyring_gc_check_iterator()
1707 	return key_is_dead(key, *limit);  in keyring_gc_check_iterator()
1716 void keyring_gc(struct key *keyring, time64_t limit)  in keyring_gc()
1761 void keyring_restriction_gc(struct key *keyring, struct key_type *dead_type)  in keyring_restriction_gc()
1787 	key_put(keyres->key);  in keyring_restriction_gc()
1788 	keyres->key = NULL;  in keyring_restriction_gc()