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Merge pull request #17 from moneromooo-monero/blockchain

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db_lmdb: catch attempt to remove block from an empty blockchain
db_lmdb: do not give the group database write permissions
This commit is contained in:
Thomas Winget 2014-12-12 18:45:29 -05:00 committed by warptangent
commit 5baf9d9eb3
1 changed files with 4 additions and 1 deletions
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5
src/cryptonote_core/BlockchainDB_impl/db_lmdb.cpp
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@ -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