230 static KeymasterOperation begin(Keymaster& keymaster, const std::string& dir,  in begin()  argument
235     auto kmKeyPath = dir + "/" + kFn_keymaster_key_blob;  in begin()
246         LOG(DEBUG) << "Upgrading key: " << dir;  in begin()
249         auto newKeyPath = dir + "/" + kFn_keymaster_key_blob_upgraded;  in begin()
256             if (!android::vold::FsyncDirectory(dir)) {  in begin()
257                 LOG(ERROR) << "Key dir sync failed: " << dir;  in begin()
261                 LOG(ERROR) << "Key deletion failed during upgrade, continuing anyway: " << dir;  in begin()
265         LOG(INFO) << "Key upgraded: " << dir;  in begin()
269 static bool encryptWithKeymasterKey(Keymaster& keymaster, const std::string& dir,  in encryptWithKeymasterKey()  argument
275     auto opHandle = begin(keymaster, dir, km::KeyPurpose::ENCRYPT, keyParams, opParams, authToken,  in encryptWithKeymasterKey()
297 static bool decryptWithKeymasterKey(Keymaster& keymaster, const std::string& dir,  in decryptWithKeymasterKey()  argument
306     auto opHandle = begin(keymaster, dir, km::KeyPurpose::DECRYPT, keyParams, opParams, authToken,  in decryptWithKeymasterKey()
483 bool storeKey(const std::string& dir, const KeyAuthentication& auth, const KeyBuffer& key) {  in storeKey()  argument
484     if (TEMP_FAILURE_RETRY(mkdir(dir.c_str(), 0700)) == -1) {  in storeKey()
485         PLOG(ERROR) << "key mkdir " << dir;  in storeKey()
488     if (!writeStringToFile(kCurrentVersion, dir + "/" + kFn_version)) return false;  in storeKey()
490     if (!createSecdiscardable(dir + "/" + kFn_secdiscardable, &secdiscardable_hash)) return false;  in storeKey()
492     if (!writeStringToFile(stretching, dir + "/" + kFn_stretching)) return false;  in storeKey()
499         if (!writeStringToFile(salt, dir + "/" + kFn_salt)) return false;  in storeKey()
509         if (!writeStringToFile(kmKey, dir + "/" + kFn_keymaster_key_blob)) return false;  in storeKey()
513         if (!encryptWithKeymasterKey(keymaster, dir, keyParams, authToken, key, &encryptedKey,  in storeKey()
519     if (!writeStringToFile(encryptedKey, dir + "/" + kFn_encrypted_key)) return false;  in storeKey()
520     if (!FsyncDirectory(dir)) return false;  in storeKey()
543 bool retrieveKey(const std::string& dir, const KeyAuthentication& auth, KeyBuffer* key,  in retrieveKey()  argument
546     if (!readFileToString(dir + "/" + kFn_version, &version)) return false;  in retrieveKey()
552     if (!readSecdiscardable(dir + "/" + kFn_secdiscardable, &secdiscardable_hash)) return false;  in retrieveKey()
554     if (!readFileToString(dir + "/" + kFn_stretching, &stretching)) return false;  in retrieveKey()
557         if (!readFileToString(dir + "/" + kFn_salt, &salt)) return false;  in retrieveKey()
562     if (!readFileToString(dir + "/" + kFn_encrypted_key, &encryptedMessage)) return false;  in retrieveKey()
569         if (!decryptWithKeymasterKey(keymaster, dir, keyParams, authToken, encryptedMessage, key,  in retrieveKey()
578 static bool deleteKey(const std::string& dir) {  in deleteKey()  argument
580     if (!readFileToString(dir + "/" + kFn_keymaster_key_blob, &kmKey)) return false;  in deleteKey()
595 static bool recursiveDeleteKey(const std::string& dir) {  in recursiveDeleteKey()  argument
596     if (ForkExecvp(std::vector<std::string>{kRmPath, "-rf", dir}) != 0) {  in recursiveDeleteKey()
603 bool destroyKey(const std::string& dir) {  in destroyKey()  argument
606     bool uses_km = pathExists(dir + "/" + kFn_keymaster_key_blob);  in destroyKey()
608         success &= deleteKey(dir);  in destroyKey()
613         dir + "/" + kFn_encrypted_key,  in destroyKey()
614         dir + "/" + kFn_secdiscardable,  in destroyKey()
617         secdiscard_cmd.emplace_back(dir + "/" + kFn_keymaster_key_blob);  in destroyKey()
623     success &= recursiveDeleteKey(dir);  in destroyKey()