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
465 	       key->type->name, key->serial, ctx->count, ctx->buflen);  in keyring_read_iterator()
470 	ret = put_user(key->serial, ctx->buffer);  in keyring_read_iterator()
474 	ctx->count += sizeof(key->serial);  in keyring_read_iterator()
485 static long keyring_read(const struct key *keyring,  in keyring_read()
521 struct key *keyring_alloc(const char *description, kuid_t uid, kgid_t gid,  in keyring_alloc()
525 			  struct key *dest)  in keyring_alloc()
527 	struct key *keyring;  in keyring_alloc()
558 int restrict_link_reject(struct key *keyring,  in restrict_link_reject()
561 			 struct key *restriction_key)  in restrict_link_reject()
569 bool key_default_cmp(const struct key *key,  in key_default_cmp()  argument
572 	return strcmp(key->description, match_data->raw_data) == 0;  in key_default_cmp()
581 	const struct key *key = keyring_ptr_to_key(object);  in keyring_search_iterator()  local
582 	unsigned long kflags = READ_ONCE(key->flags);  in keyring_search_iterator()
583 	short state = READ_ONCE(key->state);  in keyring_search_iterator()
585 	kenter("{%d}", key->serial);  in keyring_search_iterator()
588 	if (key->type != ctx->index_key.type) {  in keyring_search_iterator()
595 		time64_t expiry = READ_ONCE(key->expiry);  in keyring_search_iterator()
613 	if (!ctx->match_data.cmp(key, &ctx->match_data)) {  in keyring_search_iterator()
620 	    key_task_permission(make_key_ref(key, ctx->possessed),  in keyring_search_iterator()
637 	ctx->result = make_key_ref(key, ctx->possessed);  in keyring_search_iterator()
650 static int search_keyring(struct key *keyring, struct keyring_search_context *ctx)  in search_keyring()
667 static bool search_nested_keyrings(struct key *keyring,  in search_nested_keyrings()
671 		struct key *keyring;  in search_nested_keyrings()
679 	struct key *key;  in search_nested_keyrings()  local
785 		key = keyring_ptr_to_key(ptr);  in search_nested_keyrings()
797 		    key_task_permission(make_key_ref(key, ctx->possessed),  in search_nested_keyrings()
808 		keyring = key;  in search_nested_keyrings()
857 	key = key_ref_to_ptr(ctx->result);  in search_nested_keyrings()
858 	key_check(key);  in search_nested_keyrings()
860 		key->last_used_at = ctx->now;  in search_nested_keyrings()
906 	struct key *keyring;  in keyring_search_rcu()
956 	key_ref_t key;  in keyring_search()  local
968 	key = keyring_search_rcu(keyring, &ctx);  in keyring_search()
973 	return key;  in keyring_search()
1001 static bool keyring_detect_restriction_cycle(const struct key *dest_keyring,  in keyring_detect_restriction_cycle()
1004 	while (keyres && keyres->key &&  in keyring_detect_restriction_cycle()
1005 	       keyres->key->type == &key_type_keyring) {  in keyring_detect_restriction_cycle()
1006 		if (keyres->key == dest_keyring)  in keyring_detect_restriction_cycle()
1009 		keyres = keyres->key->restrict_link;  in keyring_detect_restriction_cycle()
1028 	struct key *keyring;  in keyring_restrict()
1074 		key_put(restrict_link->key);  in keyring_restrict()
1103 	struct key *keyring, *key;  in find_key_to_update()  local
1121 	key = keyring_ptr_to_key(object);  in find_key_to_update()
1122 	if (key->flags & ((1 << KEY_FLAG_INVALIDATED) |  in find_key_to_update()
1127 	__key_get(key);  in find_key_to_update()
1128 	kleave(" = {%d}", key->serial);  in find_key_to_update()
1129 	return make_key_ref(key, is_key_possessed(keyring_ref));  in find_key_to_update()
1143 struct key *find_keyring_by_name(const char *name, bool uid_keyring)  in find_keyring_by_name()
1146 	struct key *keyring;  in find_keyring_by_name()
1195 	const struct key *key = keyring_ptr_to_key(object);  in keyring_detect_cycle_iterator()  local
1197 	kenter("{%d}", key->serial);  in keyring_detect_cycle_iterator()
1201 	if (key != ctx->match_data.raw_data)  in keyring_detect_cycle_iterator()
1215 static int keyring_detect_cycle(struct key *A, struct key *B)  in keyring_detect_cycle()
1238 int __key_link_lock(struct key *keyring,  in __key_link_lock()
1260 int __key_move_lock(struct key *l_keyring, struct key *u_keyring,  in __key_move_lock()
1294 int __key_link_begin(struct key *keyring,  in __key_link_begin()
1352 int __key_link_check_live_key(struct key *keyring, struct key *key)  in __key_link_check_live_key()  argument
1354 	if (key->type == &key_type_keyring)  in __key_link_check_live_key()
1357 		return keyring_detect_cycle(keyring, key);  in __key_link_check_live_key()
1369 void __key_link(struct key *key, struct assoc_array_edit **_edit)  in __key_link()  argument
1371 	__key_get(key);  in __key_link()
1372 	assoc_array_insert_set_object(*_edit, keyring_key_to_ptr(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(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
1517 static void __key_unlink_end(struct key *keyring,  in __key_unlink_end()  argument
1518 			     struct key *key,  in __key_unlink_end()
1544 int key_unlink(struct key *keyring, struct key *key)  in key_unlink()  argument
1550 	key_check(key);  in key_unlink()
1556 	ret = __key_unlink_begin(keyring, key, &edit);  in key_unlink()
1558 		__key_unlink(keyring, key, &edit);  in key_unlink()
1559 	__key_unlink_end(keyring, key, edit);  in key_unlink()
1589 int key_move(struct key *key,  in key_move()  argument
1590 	     struct key *from_keyring,  in key_move()
1591 	     struct key *to_keyring,  in key_move()
1597 	kenter("%d,%d,%d", key->serial, from_keyring->serial, to_keyring->serial);  in key_move()
1602 	key_check(key);  in key_move()
1606 	ret = __key_move_lock(from_keyring, to_keyring, &key->index_key);  in key_move()
1609 	ret = __key_unlink_begin(from_keyring, key, &from_edit);  in key_move()
1612 	ret = __key_link_begin(to_keyring, &key->index_key, &to_edit);  in key_move()
1620 	ret = __key_link_check_restriction(to_keyring, key);  in key_move()
1623 	ret = __key_link_check_live_key(to_keyring, key);  in key_move()
1627 	__key_unlink(from_keyring, key, &from_edit);  in key_move()
1628 	__key_link(key, &to_edit);  in key_move()
1630 	__key_link_end(to_keyring, &key->index_key, to_edit);  in key_move()
1631 	__key_unlink_end(from_keyring, key, from_edit);  in key_move()
1646 int keyring_clear(struct key *keyring)  in keyring_clear()
1676 static void keyring_revoke(struct key *keyring)  in keyring_revoke()
1690 	struct key *key = keyring_ptr_to_key(object);  in keyring_gc_select_iterator()  local
1693 	if (key_is_dead(key, *limit))  in keyring_gc_select_iterator()
1695 	key_get(key);  in keyring_gc_select_iterator()
1701 	const struct key *key = keyring_ptr_to_key(object);  in keyring_gc_check_iterator()  local
1704 	key_check(key);  in keyring_gc_check_iterator()
1705 	return key_is_dead(key, *limit);  in keyring_gc_check_iterator()
1714 void keyring_gc(struct key *keyring, time64_t limit)  in keyring_gc()
1759 void keyring_restriction_gc(struct key *keyring, struct key_type *dead_type)  in keyring_restriction_gc()
1785 	key_put(keyres->key);  in keyring_restriction_gc()
1786 	keyres->key = NULL;  in keyring_restriction_gc()