Line data    Source code

       1             : #include "fd_runtime_init.h"
       2             : #include "fd_runtime_err.h"
       3             : #include <stdio.h>
       4             : #include "../types/fd_types.h"
       5             : #include "context/fd_exec_slot_ctx.h"
       6             : #include "../../ballet/lthash/fd_lthash.h"
       7             : #include "fd_system_ids.h"
       8             : 
       9             : /* fd_feature_restore loads a feature from the accounts database and
      10             :    updates the bank's feature activation state, given a feature account
      11             :    address. */
      12             : 
      13             : static void
      14             : fd_feature_restore( fd_features_t *         features,
      15             :                     fd_exec_slot_ctx_t *    slot_ctx,
      16             :                     fd_feature_id_t const * id,
      17             :                     uchar const             acct[ static 32 ],
      18           0 :                     fd_spad_t *             runtime_spad ) {
      19             : 
      20             :   /* Skip reverted features */
      21           0 :   if( FD_UNLIKELY( id->reverted ) ) {
      22           0 :     return;
      23           0 :   }
      24             : 
      25           0 :   FD_TXN_ACCOUNT_DECL( acct_rec );
      26           0 :   int err = fd_txn_account_init_from_funk_readonly( acct_rec,
      27           0 :                                                     (fd_pubkey_t *)acct,
      28           0 :                                                     slot_ctx->funk,
      29           0 :                                                     slot_ctx->funk_txn );
      30           0 :   if( FD_UNLIKELY( err!=FD_ACC_MGR_SUCCESS ) ) {
      31           0 :     return;
      32           0 :   }
      33             : 
      34             :   /* Skip accounts that are not owned by the feature program
      35             :      https://github.com/anza-xyz/solana-sdk/blob/6512aca61167088ce10f2b545c35c9bcb1400e70/feature-gate-interface/src/lib.rs#L42-L44 */
      36           0 :   if( FD_UNLIKELY( memcmp( acct_rec->vt->get_owner( acct_rec ), fd_solana_feature_program_id.key, sizeof(fd_pubkey_t) ) ) ) {
      37           0 :     return;
      38           0 :   }
      39             : 
      40             :   /* Account data size must be >= FD_FEATURE_SIZEOF (9 bytes)
      41             :      https://github.com/anza-xyz/solana-sdk/blob/6512aca61167088ce10f2b545c35c9bcb1400e70/feature-gate-interface/src/lib.rs#L45-L47 */
      42           0 :   if( FD_UNLIKELY( acct_rec->vt->get_data_len( acct_rec )<FD_FEATURE_SIZEOF ) ) {
      43           0 :     return;
      44           0 :   }
      45             : 
      46             :   /* Deserialize the feature account data
      47             :      https://github.com/anza-xyz/solana-sdk/blob/6512aca61167088ce10f2b545c35c9bcb1400e70/feature-gate-interface/src/lib.rs#L48-L50 */
      48           0 :   FD_SPAD_FRAME_BEGIN( runtime_spad ) {
      49           0 :     int decode_err;
      50           0 :     fd_feature_t * feature = fd_bincode_decode_spad(
      51           0 :         feature, runtime_spad,
      52           0 :         acct_rec->vt->get_data( acct_rec ),
      53           0 :         acct_rec->vt->get_data_len( acct_rec ),
      54           0 :         &decode_err );
      55           0 :     if( FD_UNLIKELY( decode_err ) ) {
      56           0 :       return;
      57           0 :     }
      58             : 
      59           0 :     if( feature->has_activated_at ) {
      60           0 :       FD_LOG_INFO(( "Feature %s activated at %lu", FD_BASE58_ENC_32_ALLOCA( acct ), feature->activated_at ));
      61           0 :       fd_features_set( features, id, feature->activated_at );
      62           0 :     } else {
      63           0 :       FD_LOG_DEBUG(( "Feature %s not activated at %lu", FD_BASE58_ENC_32_ALLOCA( acct ), feature->activated_at ));
      64           0 :     }
      65             :     /* No need to call destroy, since we are using fd_spad allocator. */
      66           0 :   } FD_SPAD_FRAME_END;
      67           0 : }
      68             : 
      69             : void
      70           0 : fd_features_restore( fd_exec_slot_ctx_t * slot_ctx, fd_spad_t * runtime_spad ) {
      71           0 :   fd_features_t * features = fd_bank_features_modify( slot_ctx->bank );
      72             : 
      73           0 :   for( fd_feature_id_t const * id = fd_feature_iter_init();
      74           0 :                                    !fd_feature_iter_done( id );
      75           0 :                                id = fd_feature_iter_next( id ) ) {
      76           0 :     fd_feature_restore( features, slot_ctx, id, id->id.key, runtime_spad );
      77           0 :   }
      78           0 : }