Line data    Source code

       1             : #include "fd_sysvar.h"
       2             : #include "../fd_system_ids.h"
       3             : #include "../fd_hashes.h"
       4             : 
       5             : #include "fd_sysvar_rent.h"
       6             : 
       7             : /* https://github.com/anza-xyz/agave/blob/cbc8320d35358da14d79ebcada4dfb6756ffac79/runtime/src/bank.rs#L1813 */
       8             : void
       9             : fd_sysvar_account_update( fd_bank_t *               bank,
      10             :                           fd_funk_t *               funk,
      11             :                           fd_funk_txn_xid_t const * xid,
      12             :                           fd_capture_ctx_t *        capture_ctx,
      13             :                           fd_pubkey_t const *       address,
      14             :                           void const *              data,
      15         462 :                           ulong                     sz ) {
      16         462 :   fd_rent_t const * rent    = fd_bank_rent_query( bank );
      17         462 :   ulong     const   min_bal = fd_rent_exempt_minimum_balance( rent, sz );
      18             : 
      19         462 :   fd_txn_account_t rec[1];
      20         462 :   fd_funk_rec_prepare_t prepare = {0};
      21         462 :   fd_txn_account_init_from_funk_mutable( rec, address, funk, xid, 1, sz, &prepare );
      22         462 :   fd_lthash_value_t prev_hash[1];
      23         462 :   fd_hashes_account_lthash( address, fd_txn_account_get_meta( rec ), fd_txn_account_get_data( rec ), prev_hash );
      24             : 
      25         462 :   ulong const slot            = fd_bank_slot_get( bank );
      26         462 :   ulong const lamports_before = fd_txn_account_get_lamports( rec );
      27         462 :   ulong const lamports_after  = fd_ulong_max( lamports_before, min_bal );
      28         462 :   fd_txn_account_set_lamports( rec, lamports_after      );
      29         462 :   fd_txn_account_set_owner   ( rec, &fd_sysvar_owner_id );
      30         462 :   fd_txn_account_set_slot    ( rec, slot                );
      31         462 :   fd_txn_account_set_data    ( rec, data, sz );
      32             : 
      33         462 :   ulong lamports_minted;
      34         462 :   if( FD_UNLIKELY( __builtin_usubl_overflow( lamports_after, lamports_before, &lamports_minted ) ) ) {
      35           0 :     char name[ FD_BASE58_ENCODED_32_SZ ]; fd_base58_encode_32( address->uc, NULL, name );
      36           0 :     FD_LOG_CRIT(( "fd_sysvar_account_update: lamports overflowed: address=%s lamports_before=%lu lamports_after=%lu",
      37           0 :                   name, lamports_before, lamports_after ));
      38           0 :   }
      39             : 
      40         462 :   if( lamports_minted ) {
      41           9 :     ulong cap = fd_bank_capitalization_get( bank );
      42           9 :     fd_bank_capitalization_set( bank, cap+lamports_minted );
      43         453 :   } else if( lamports_before==lamports_after ) {
      44             :     /* no balance change */
      45         453 :   } else {
      46           0 :     __builtin_unreachable();
      47           0 :   }
      48             : 
      49         462 :   fd_hashes_update_lthash( rec, prev_hash, bank, capture_ctx );
      50         462 :   fd_txn_account_mutable_fini( rec, funk, &prepare );
      51             : 
      52         462 :   FD_LOG_DEBUG(( "Updated sysvar: address=%s data_sz=%lu slot=%lu lamports=%lu lamports_minted=%lu",
      53         462 :                  FD_BASE58_ENC_32_ALLOCA( address ), sz, slot, lamports_after, lamports_minted ));
      54         462 : }
      55             : 
      56             : int
      57             : fd_sysvar_instr_acct_check( fd_exec_instr_ctx_t const * ctx,
      58             :                             ulong                       idx,
      59           0 :                             fd_pubkey_t const *         addr_want ) {
      60             : 
      61           0 :   if( FD_UNLIKELY( idx >= ctx->instr->acct_cnt ) ) {
      62           0 :     return FD_EXECUTOR_INSTR_ERR_NOT_ENOUGH_ACC_KEYS;
      63           0 :   }
      64             : 
      65           0 :   ushort idx_in_txn = ctx->instr->accounts[idx].index_in_transaction;
      66           0 :   fd_pubkey_t const * addr_have = &ctx->txn_ctx->account_keys[ idx_in_txn ];
      67           0 :   if( FD_UNLIKELY( 0!=memcmp( addr_have, addr_want, sizeof(fd_pubkey_t) ) ) ) {
      68           0 :     return FD_EXECUTOR_INSTR_ERR_INVALID_ARG;
      69           0 :   }
      70             : 
      71           0 :   return FD_EXECUTOR_INSTR_SUCCESS;
      72           0 : }