diff options
| -rw-r--r-- | src/cryptonote_core/BlockchainDB_impl/db_lmdb.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/cryptonote_core/BlockchainDB_impl/db_lmdb.cpp b/src/cryptonote_core/BlockchainDB_impl/db_lmdb.cpp index f53e5bac2..9d0728f6c 100644 --- a/src/cryptonote_core/BlockchainDB_impl/db_lmdb.cpp +++ b/src/cryptonote_core/BlockchainDB_impl/db_lmdb.cpp @@ -207,6 +207,9 @@ void BlockchainLMDB::remove_block() LOG_PRINT_L3("BlockchainLMDB::" << __func__); check_open(); + if (m_height == 0) + throw0(BLOCK_DNE ("Attempting to remove block from an empty blockchain")); + MDB_val_copy<uint64_t> k(m_height - 1); MDB_val h; if (mdb_get(*m_write_txn, m_block_hashes, &k, &h)) @@ -527,7 +530,7 @@ void BlockchainLMDB::open(const std::string& filename) size_t mapsize = 1LL << 34; if (auto result = mdb_env_set_mapsize(m_env, mapsize)) throw0(DB_ERROR(std::string("Failed to set max memory map size: ").append(mdb_strerror(result)).c_str())); - if (auto result = mdb_env_open(m_env, filename.c_str(), 0, 0664)) + if (auto result = mdb_env_open(m_env, filename.c_str(), 0, 0644)) throw0(DB_ERROR(std::string("Failed to open lmdb environment: ").append(mdb_strerror(result)).c_str())); // get a read/write MDB_txn |