monerod can now sync from pruned blocks

If the peer (whether pruned or not itself) supports sending pruned blocks
to syncing nodes, the pruned version will be sent along with the hash
of the pruned data and the block weight. The original tx hashes can be
reconstructed from the pruned txes and theur prunable data hash. Those
hashes and the block weights are hashes and checked against the set of
precompiled hashes, ensuring the data we received is the original data.
It is currently not possible to use this system when not using the set
of precompiled hashes, since block weights can not otherwise be checked
for validity.

This is off by default for now, and is enabled by --sync-pruned-blocks

1 files changed, 2 insertions, 1 deletions

diff --git a/src/blockchain_db/blockchain_db.h b/src/blockchain_db/blockchain_db.h
index bb4de3ce6..cb6a8c6f7 100644
--- a/src/blockchain_db/blockchain_db.h
+++ b/src/blockchain_db/blockchain_db.h
@@ -156,7 +156,8 @@ struct txpool_tx_meta_t
   uint8_t relayed;
   uint8_t do_not_relay;
   uint8_t double_spend_seen: 1;
-  uint8_t bf_padding: 7;
+  uint8_t pruned: 1;
+  uint8_t bf_padding: 6;
 
   uint8_t padding[76]; // till 192 bytes
 };