Line data    Source code

       1             : #include "fd_sysvar_rent.h"
       2             : #include "fd_sysvar.h"
       3             : #include "../fd_system_ids.h"
       4             : #include "../context/fd_exec_slot_ctx.h"
       5             : #include <assert.h>
       6             : 
       7             : void
       8             : fd_sysvar_rent_write( fd_exec_slot_ctx_t * slot_ctx,
       9           0 :                       fd_rent_t const *    rent ) {
      10             : 
      11           0 :   uchar enc[ 32 ];
      12             : 
      13           0 :   ulong sz = fd_rent_size( rent );
      14           0 :   FD_TEST( sz<=sizeof(enc) );
      15           0 :   memset( enc, 0, sz );
      16             : 
      17           0 :   fd_bincode_encode_ctx_t ctx;
      18           0 :   ctx.data    = enc;
      19           0 :   ctx.dataend = enc + sz;
      20           0 :   if( fd_rent_encode( rent, &ctx ) )
      21           0 :     FD_LOG_ERR(("fd_rent_encode failed"));
      22             : 
      23           0 :   fd_sysvar_set( slot_ctx->bank, slot_ctx->funk, slot_ctx->funk_txn, &fd_sysvar_owner_id, &fd_sysvar_rent_id, enc, sz, slot_ctx->slot );
      24           0 : }
      25             : 
      26             : void
      27           0 : fd_sysvar_rent_init( fd_exec_slot_ctx_t * slot_ctx ) {
      28           0 :   fd_rent_t const * rent = fd_bank_rent_query( slot_ctx->bank );
      29           0 :   fd_sysvar_rent_write( slot_ctx, rent );
      30           0 : }
      31             : 
      32             : fd_rent_t const *
      33             : fd_sysvar_rent_read( fd_funk_t *     funk,
      34             :                      fd_funk_txn_t * funk_txn,
      35           0 :                      fd_spad_t *     spad ) {
      36           0 :   FD_TXN_ACCOUNT_DECL( acc );
      37           0 :   int rc = fd_txn_account_init_from_funk_readonly( acc, &fd_sysvar_rent_id, funk, funk_txn );
      38           0 :   if( FD_UNLIKELY( rc!=FD_ACC_MGR_SUCCESS ) ) {
      39           0 :     return NULL;
      40           0 :   }
      41             : 
      42             :   /* This check is needed as a quirk of the fuzzer. If a sysvar account
      43             :      exists in the accounts database, but doesn't have any lamports,
      44             :      this means that the account does not exist. This wouldn't happen
      45             :      in a real execution environment. */
      46           0 :   if( FD_UNLIKELY( acc->vt->get_lamports( acc )==0 ) ) {
      47           0 :     return NULL;
      48           0 :   }
      49             : 
      50           0 :   int err;
      51           0 :   return fd_bincode_decode_spad(
      52           0 :       rent, spad,
      53           0 :       acc->vt->get_data( acc ),
      54           0 :       acc->vt->get_data_len( acc ),
      55           0 :       &err );
      56           0 : }