27 static void *key_data(struct key *key)  in key_data()  argument
29 	struct encrypted_key_payload *epayload = dereference_key_locked(key);  in key_data()
31 	lockdep_assert_held_read(&key->sem);  in key_data()
36 static void nvdimm_put_key(struct key *key)  in nvdimm_put_key()  argument
38 	if (!key)  in nvdimm_put_key()
41 	up_read(&key->sem);  in nvdimm_put_key()
42 	key_put(key);  in nvdimm_put_key()
50 static struct key *nvdimm_request_key(struct nvdimm *nvdimm)  in nvdimm_request_key()
52 	struct key *key = NULL;  in nvdimm_request_key()  local
58 	key = request_key(&key_type_encrypted, desc, "");  in nvdimm_request_key()
59 	if (IS_ERR(key)) {  in nvdimm_request_key()
60 		if (PTR_ERR(key) == -ENOKEY)  in nvdimm_request_key()
64 		key = NULL;  in nvdimm_request_key()
68 		down_read(&key->sem);  in nvdimm_request_key()
69 		epayload = dereference_key_locked(key);  in nvdimm_request_key()
71 			up_read(&key->sem);  in nvdimm_request_key()
72 			key_put(key);  in nvdimm_request_key()
73 			key = NULL;  in nvdimm_request_key()
77 	return key;  in nvdimm_request_key()
81 		struct key **key)  in nvdimm_get_key_payload()  argument
83 	*key = nvdimm_request_key(nvdimm);  in nvdimm_get_key_payload()
84 	if (!*key)  in nvdimm_get_key_payload()
87 	return key_data(*key);  in nvdimm_get_key_payload()
90 static struct key *nvdimm_lookup_user_key(struct nvdimm *nvdimm,  in nvdimm_lookup_user_key()
94 	struct key *key;  in nvdimm_lookup_user_key()  local
102 	key = key_ref_to_ptr(keyref);  in nvdimm_lookup_user_key()
103 	if (key->type != &key_type_encrypted) {  in nvdimm_lookup_user_key()
104 		key_put(key);  in nvdimm_lookup_user_key()
108 	dev_dbg(dev, "%s: key found: %#x\n", __func__, key_serial(key));  in nvdimm_lookup_user_key()
110 	down_read_nested(&key->sem, subclass);  in nvdimm_lookup_user_key()
111 	epayload = dereference_key_locked(key);  in nvdimm_lookup_user_key()
113 		up_read(&key->sem);  in nvdimm_lookup_user_key()
114 		key_put(key);  in nvdimm_lookup_user_key()
115 		key = NULL;  in nvdimm_lookup_user_key()
117 	return key;  in nvdimm_lookup_user_key()
121 		key_serial_t id, int subclass, struct key **key)  in nvdimm_get_user_key_payload()  argument
123 	*key = NULL;  in nvdimm_get_user_key_payload()
131 	*key = nvdimm_lookup_user_key(nvdimm, id, subclass);  in nvdimm_get_user_key_payload()
132 	if (!*key)  in nvdimm_get_user_key_payload()
135 	return key_data(*key);  in nvdimm_get_user_key_payload()
141 	struct key *key;  in nvdimm_key_revalidate()  local
148 	data = nvdimm_get_key_payload(nvdimm, &key);  in nvdimm_key_revalidate()
156 		nvdimm_put_key(key);  in nvdimm_key_revalidate()
160 	nvdimm_put_key(key);  in nvdimm_key_revalidate()
169 	struct key *key;  in __nvdimm_security_unlock()  local
206 		data = nvdimm_get_key_payload(nvdimm, &key);  in __nvdimm_security_unlock()
209 	dev_dbg(dev, "key: %d unlock: %s\n", key_serial(key),  in __nvdimm_security_unlock()
214 	nvdimm_put_key(key);  in __nvdimm_security_unlock()
253 	struct key *key;  in security_disable()  local
274 			NVDIMM_BASE_KEY, &key);  in security_disable()
280 		dev_dbg(dev, "key: %d disable_master: %s\n", key_serial(key),  in security_disable()
284 		dev_dbg(dev, "key: %d disable: %s\n", key_serial(key),  in security_disable()
288 	nvdimm_put_key(key);  in security_disable()
302 	struct key *key, *newkey;  in security_update()  local
318 			NVDIMM_BASE_KEY, &key);  in security_update()
325 		nvdimm_put_key(key);  in security_update()
331 			key_serial(key), key_serial(newkey),  in security_update()
336 	nvdimm_put_key(key);  in security_update()
351 	struct key *key = NULL;  in security_erase()  local
374 			NVDIMM_BASE_KEY, &key);  in security_erase()
381 	dev_dbg(dev, "key: %d erase%s: %s\n", key_serial(key),  in security_erase()
385 	nvdimm_put_key(key);  in security_erase()
394 	struct key *key = NULL;  in security_overwrite()  local
410 			NVDIMM_BASE_KEY, &key);  in security_overwrite()
417 	dev_dbg(dev, "key: %d overwrite submission: %s\n", key_serial(key),  in security_overwrite()
420 	nvdimm_put_key(key);  in security_overwrite()
527 	unsigned int key, newkey;  in nvdimm_security_store()  local
542 		rc = kstrtouint(keystr, 0, &key);  in nvdimm_security_store()
552 		dev_dbg(dev, "disable %u\n", key);  in nvdimm_security_store()
553 		rc = security_disable(nvdimm, key, NVDIMM_USER);  in nvdimm_security_store()
555 		dev_dbg(dev, "disable_master %u\n", key);  in nvdimm_security_store()
556 		rc = security_disable(nvdimm, key, NVDIMM_MASTER);  in nvdimm_security_store()
558 		dev_dbg(dev, "%s %u %u\n", ops[i].name, key, newkey);  in nvdimm_security_store()
559 		rc = security_update(nvdimm, key, newkey, i == OP_UPDATE  in nvdimm_security_store()
562 		dev_dbg(dev, "%s %u\n", ops[i].name, key);  in nvdimm_security_store()
567 		rc = security_erase(nvdimm, key, i == OP_ERASE  in nvdimm_security_store()
570 		dev_dbg(dev, "overwrite %u\n", key);  in nvdimm_security_store()
575 		rc = security_overwrite(nvdimm, key);  in nvdimm_security_store()