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db_lmdb: make mdb_block_info format conversion more future proof 

If mdb_block_info changes again, the v2 to v3 conversion would
convert to an incorrect format.
This commit is contained in:
moneromooo-monero 2019-02-01 22:16:06 +00:00
parent 39d7d3113b
commit f024a10b68
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GPG Key ID: 686F07454D6CEFC3
1 changed files with 5 additions and 5 deletions
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10
src/blockchain_db/lmdb/db_lmdb.cpp
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@ -268,7 +268,7 @@ inline void lmdb_db_open(MDB_txn* txn, const char* name, int flags, MDB_dbi& dbi
namespace cryptonote
{
typedef struct mdb_block_info_old
typedef struct mdb_block_info_1
{
uint64_t bi_height;
uint64_t bi_timestamp;
@ -276,7 +276,7 @@ typedef struct mdb_block_info_old
uint64_t bi_weight; // a size_t really but we need 32-bit compat
difficulty_type bi_diff;
crypto::hash bi_hash;
} mdb_block_info_old;
} mdb_block_info_1;
typedef struct mdb_block_info_2
{
@ -4126,7 +4126,7 @@ void BlockchainLMDB::migrate_0_1()
break;
}
MDB_dbi diffs, hashes, sizes, timestamps;
mdb_block_info_old bi;
mdb_block_info_1 bi;
MDB_val_set(nv, bi);
lmdb_db_open(txn, "block_diffs", 0, diffs, "Failed to open db handle for block_diffs");
@ -4753,8 +4753,8 @@ void BlockchainLMDB::migrate_2_3()
}
else if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from block_info: ", result).c_str()));
const mdb_block_info_old *bi_old = (const mdb_block_info_old*)v.mv_data;
mdb_block_info bi;
const mdb_block_info_1 *bi_old = (const mdb_block_info_1*)v.mv_data;
mdb_block_info_2 bi;
bi.bi_height = bi_old->bi_height;
bi.bi_timestamp = bi_old->bi_timestamp;
bi.bi_coins = bi_old->bi_coins;