Line data    Source code

       1             : #ifndef HEADER_fd_src_flamenco_runtime_context_fd_exec_txn_ctx_h
       2             : #define HEADER_fd_src_flamenco_runtime_context_fd_exec_txn_ctx_h
       3             : 
       4             : #include "fd_exec_instr_ctx.h"
       5             : #include "../../log_collector/fd_log_collector_base.h"
       6             : #include "../../../ballet/txn/fd_txn.h"
       7             : #include "../../features/fd_features.h"
       8             : #include "../fd_txncache.h"
       9             : #include "../fd_bank_hash_cmp.h"
      10             : #include "../../../funk/fd_funk.h"
      11             : #include "../fd_compute_budget_details.h"
      12             : #include "../../../disco/pack/fd_microblock.h"
      13             : 
      14             : /* Return data for syscalls */
      15             : 
      16             : struct fd_txn_return_data {
      17             :   fd_pubkey_t program_id;
      18             :   ulong       len;
      19             :   uchar       data[1024];
      20             : };
      21             : 
      22             : typedef struct fd_txn_return_data fd_txn_return_data_t;
      23             : 
      24             : /* fd_exec_txn_ctx_t is the context needed to execute a transaction. */
      25             : 
      26             : /* An entry in the instruction trace */
      27             : struct fd_exec_instr_trace_entry {
      28             :   /* Metadata about the instruction */
      29             :   fd_instr_info_t * instr_info;
      30             :   /* Stack height when this instruction was pushed onto the stack (including itself)
      31             :      https://github.com/anza-xyz/agave/blob/d87e23d8d91c32d5f2be2bb3557c730bee1e9434/sdk/src/transaction_context.rs#L475-L480 */
      32             :   ulong stack_height;
      33             : };
      34             : typedef struct fd_exec_instr_trace_entry fd_exec_instr_trace_entry_t;
      35             : 
      36             : /* https://github.com/anza-xyz/agave/blob/0d34a1a160129c4293dac248e14231e9e773b4ce/program-runtime/src/compute_budget.rs#L139 */
      37             : #define FD_MAX_INSTRUCTION_TRACE_LENGTH (64UL)
      38             : /* https://github.com/anza-xyz/agave/blob/f70ab5598ccd86b216c3928e4397bf4a5b58d723/compute-budget/src/compute_budget.rs#L13 */
      39          12 : #define FD_MAX_INSTRUCTION_STACK_DEPTH  (5UL)
      40             : 
      41             : struct fd_exec_txn_ctx {
      42             :   ulong magic; /* ==FD_EXEC_TXN_CTX_MAGIC */
      43             : 
      44             :   /* TODO: These are fields borrowed from the slot and epoch ctx. This
      45             :      could be refactored even further. Currently these fields are not
      46             :      all valid local joins within the scope of txn execution. */
      47             : 
      48             :   uint flags;
      49             : 
      50             :   fd_bank_t * bank;
      51             : 
      52             :   /* All pointers starting here are valid local joins in txn execution. */
      53             :   fd_features_t                        features;
      54             :   fd_txncache_t *                      status_cache;
      55             :   int                                  enable_exec_recording;
      56             :   fd_bank_hash_cmp_t *                 bank_hash_cmp;
      57             :   fd_funk_txn_t *                      funk_txn;
      58             :   fd_funk_t                            funk[1];
      59             :   ulong                                slot;
      60             :   ulong                                bank_idx;
      61             :   fd_txn_p_t                           txn;
      62             : 
      63             :   fd_spad_t *                          spad;                                        /* Sized out to handle the worst case footprint of single transaction execution. */
      64             :   fd_wksp_t *                          spad_wksp;                                   /* Workspace for the spad. */
      65             : 
      66             :   fd_compute_budget_details_t          compute_budget_details;                      /* Compute budget details */
      67             : 
      68             :   /* Fields below here are not guaranteed to be local joins in txn execution. */
      69             : 
      70             :   ulong                                paid_fees;
      71             :   ulong                                loaded_accounts_data_size;                   /* The actual transaction loaded data size */
      72             :   uint                                 custom_err;                                  /* When a custom error is returned, this is where the numeric value gets stashed */
      73             :   uchar                                instr_stack_sz;                              /* Current depth of the instruction execution stack. */
      74             :   fd_exec_instr_ctx_t                  instr_stack[FD_MAX_INSTRUCTION_STACK_DEPTH]; /* Instruction execution stack. */
      75             :   fd_exec_instr_ctx_t *                failed_instr;
      76             :   int                                  instr_err_idx;
      77             :   /* During sanitization, v0 transactions are allowed to have up to 256 accounts:
      78             :      https://github.com/anza-xyz/agave/blob/838c1952595809a31520ff1603a13f2c9123aa51/sdk/program/src/message/versions/v0/mod.rs#L139
      79             :      Nonetheless, when Agave prepares a sanitized batch for execution and tries to lock accounts, a lower limit is enforced:
      80             :      https://github.com/anza-xyz/agave/blob/838c1952595809a31520ff1603a13f2c9123aa51/accounts-db/src/account_locks.rs#L118
      81             :      That is the limit we are going to use here. */
      82             :   ulong                           accounts_cnt;                                /* Number of account pubkeys accessed by this transaction. */
      83             :   fd_pubkey_t                     account_keys[ MAX_TX_ACCOUNT_LOCKS ];        /* Array of account pubkeys accessed by this transaction. */
      84             :   ulong                           executable_cnt;                              /* Number of BPF upgradeable loader accounts. */
      85             :   fd_txn_account_t                executable_accounts[ MAX_TX_ACCOUNT_LOCKS ]; /* Array of BPF upgradeable loader program data accounts */
      86             :   fd_txn_account_t                accounts[ MAX_TX_ACCOUNT_LOCKS ];            /* Array of borrowed accounts accessed by this transaction. */
      87             : 
      88             :   /* When a program is deployed or upgraded, we must queue it to be
      89             :      updated in the program cache (if it exists already) so that
      90             :      the cache entry's ELF / sBPF information can be updated for future
      91             :      executions. We keep an array of pubkeys for the transaction to
      92             :      track which programs need to be reverified. The actual queueing
      93             :      for reverification is done in the transaction finalization step. */
      94             :   uchar                           programs_to_reverify_cnt;
      95             :   fd_pubkey_t                     programs_to_reverify[ MAX_TX_ACCOUNT_LOCKS ];
      96             : 
      97             :   /* The next three fields describe Agave's "rollback" accounts, which
      98             :      are copies of the fee payer and (if applicable) nonce account. If the
      99             :      transaction fails to load, the fee payer is still debited the transaction fee,
     100             :      and the nonce account is advanced. The fee payer must also be rolled back to it's
     101             :      state pre-transaction, plus debited any transaction fees.
     102             : 
     103             :      This is a bit of a misnomer but Agave calls it "rollback".
     104             :      This is the account state that the nonce account should be in when
     105             :      the txn fails.
     106             :      It will advance the nonce account, rather than "roll back".
     107             :    */
     108             :   fd_txn_account_t                rollback_nonce_account[ 1 ];
     109             :   ulong                           nonce_account_idx_in_txn;                    /* If the transaction has a nonce account that must be advanced, this would be !=ULONG_MAX. */
     110             :   fd_txn_account_t                rollback_fee_payer_account[ 1 ];
     111             : 
     112             :   uint                            num_instructions;                            /* Counter for number of instructions in txn */
     113             :   fd_txn_return_data_t            return_data;                                 /* Data returned from `return_data` syscalls */
     114             :   ulong                           accounts_resize_delta;                       /* Transaction level tracking for account resizing */
     115             :   fd_hash_t                       blake_txn_msg_hash;                          /* Hash of raw transaction message used by the status cache */
     116             :   ulong                           execution_fee;                               /* Execution fee paid by the fee payer in the transaction */
     117             :   ulong                           priority_fee;                                /* Priority fee paid by the fee payer in the transaction */
     118             :   ulong                           collected_rent;                              /* Rent collected from accounts in this transaction */
     119             : 
     120             :   uchar dirty_vote_acc : 1; /* 1 if this transaction maybe modified a vote account */
     121             : 
     122             :   fd_capture_ctx_t * capture_ctx;
     123             : 
     124             :   /* The instr_infos for the entire transaction are allocated at the start of
     125             :      the transaction. However, this must preserve a different counter because
     126             :      the top level instructions must get set up at once. The instruction
     127             :      error check on a maximum instruction size can be done on the
     128             :      instr_info_cnt instead of the instr_trace_length because it is a proxy
     129             :      for the trace_length: the instr_info_cnt gets incremented faster than
     130             :      the instr_trace_length because it counts all of the top level instructions
     131             :      first. */
     132             :   fd_instr_info_t             instr_infos[FD_MAX_INSTRUCTION_TRACE_LENGTH];
     133             :   ulong                       instr_info_cnt;
     134             : 
     135             :   /* These instr infos are statically allocated at the beginning of a transaction
     136             :      and are only written to / referred to within the VM. It's kept
     137             :      at the transaction level because syscalls like `GetProcessedSiblingInstruction()`
     138             :      may refer to instructions processed earlier in the transaction. */
     139             :   fd_instr_info_t             cpi_instr_infos[FD_MAX_INSTRUCTION_TRACE_LENGTH];
     140             :   ulong                       cpi_instr_info_cnt;
     141             : 
     142             :   /* Each instr info within `instr_trace` may refer to an `instr_infos` or `cpi_instr_infos`
     143             :      entry. */
     144             :   fd_exec_instr_trace_entry_t instr_trace[FD_MAX_INSTRUCTION_TRACE_LENGTH]; /* Instruction trace */
     145             :   ulong                       instr_trace_length;                           /* Number of instructions in the trace */
     146             : 
     147             :   fd_log_collector_t          log_collector;             /* Log collector instance */
     148             : 
     149             :   /* Execution error and type, to match Agave. */
     150             :   int exec_err;
     151             :   int exec_err_kind;
     152             : 
     153             :    /* The current instruction index being executed */
     154             :   int current_instr_idx;
     155             : 
     156             :   /* fuzzing options */
     157             :   struct {
     158             :     int enable_vm_tracing;
     159             :   } fuzz_config;
     160             : };
     161             : 
     162           0 : #define FD_EXEC_TXN_CTX_ALIGN     (alignof(fd_exec_txn_ctx_t))
     163           0 : #define FD_EXEC_TXN_CTX_FOOTPRINT ( sizeof(fd_exec_txn_ctx_t))
     164           0 : #define FD_EXEC_TXN_CTX_MAGIC     (0x9AD93EE71469F4D7UL      ) /* random */
     165             : 
     166             : FD_PROTOTYPES_BEGIN
     167             : 
     168             : /* Error logging handholding assertions */
     169             : 
     170             : #ifdef FD_RUNTIME_ERR_HANDHOLDING
     171             : 
     172             : /* Asserts that the error and error kind are not populated (zero) */
     173             : #define FD_TXN_TEST_ERR_OVERWRITE( txn_ctx ) \
     174             :    FD_TEST( !txn_ctx->exec_err );            \
     175             :    FD_TEST( !txn_ctx->exec_err_kind )
     176             : 
     177             : /* Used prior to a FD_TXN_ERR_FOR_LOG_INSTR call to deliberately
     178             :    bypass overwrite handholding checks.
     179             :    Only use this if you know what you're doing. */
     180             : #define FD_TXN_PREPARE_ERR_OVERWRITE( txn_ctx ) \
     181             :    txn_ctx->exec_err = 0;                          \
     182             :    txn_ctx->exec_err_kind = 0
     183             : 
     184             : #else
     185             : 
     186           0 : #define FD_TXN_TEST_ERR_OVERWRITE( txn_ctx ) ( ( void )0 )
     187           0 : #define FD_TXN_PREPARE_ERR_OVERWRITE( txn_ctx ) ( ( void )0 )
     188             : 
     189             : #endif
     190             : 
     191           0 : #define FD_TXN_ERR_FOR_LOG_INSTR( txn_ctx, err, idx ) (__extension__({ \
     192           0 :     FD_TXN_TEST_ERR_OVERWRITE( txn_ctx );                              \
     193           0 :     txn_ctx->exec_err = err;                                           \
     194           0 :     txn_ctx->exec_err_kind = FD_EXECUTOR_ERR_KIND_INSTR;               \
     195           0 :     txn_ctx->instr_err_idx = idx;                                      \
     196           0 :   }))
     197             : 
     198             : void *
     199             : fd_exec_txn_ctx_new( void * mem );
     200             : 
     201             : fd_exec_txn_ctx_t *
     202             : fd_exec_txn_ctx_join( void * mem, fd_spad_t * spad, fd_wksp_t * spad_wksp );
     203             : 
     204             : void *
     205             : fd_exec_txn_ctx_leave( fd_exec_txn_ctx_t * ctx );
     206             : 
     207             : void *
     208             : fd_exec_txn_ctx_delete( void * mem );
     209             : 
     210             : /* Sets up a basic transaction ctx without a txn descriptor or txn raw. Useful
     211             :    for mocking transaction context objects for instructions. */
     212             : void
     213             : fd_exec_txn_ctx_setup_basic( fd_exec_txn_ctx_t * ctx );
     214             : 
     215             : void
     216             : fd_exec_txn_ctx_teardown( fd_exec_txn_ctx_t * txn_ctx );
     217             : 
     218             : /* Mirrors Agave function solana_sdk::transaction_context::find_index_of_account
     219             : 
     220             :    Backward scan over transaction accounts.
     221             :    Returns -1 if not found.
     222             : 
     223             :    https://github.com/anza-xyz/agave/blob/v2.1.14/sdk/src/transaction_context.rs#L233-L238 */
     224             : 
     225             : static inline int
     226             : fd_exec_txn_ctx_find_index_of_account( fd_exec_txn_ctx_t const * ctx,
     227           0 :                                        fd_pubkey_t const *       pubkey ) {
     228           0 :   for( ulong i=ctx->accounts_cnt; i>0UL; i-- ) {
     229           0 :     if( 0==memcmp( pubkey, &ctx->account_keys[ i-1UL ], sizeof(fd_pubkey_t) ) ) {
     230           0 :       return (int)(i-1UL);
     231           0 :     }
     232           0 :   }
     233           0 :   return -1;
     234           0 : }
     235             : 
     236             : typedef int fd_txn_account_condition_fn_t ( fd_txn_account_t *        acc,
     237             :                                             fd_exec_txn_ctx_t const * ctx,
     238             :                                             ushort                    idx );
     239             : 
     240             : /* Mirrors Agave function solana_sdk::transaction_context::get_account_at_index
     241             : 
     242             :    Takes a function pointer to a condition function to check pre-conditions on the
     243             :    obtained account. If the condition function is NULL, the account is returned without
     244             :    any pre-condition checks.
     245             : 
     246             :    https://github.com/anza-xyz/agave/blob/v2.1.14/sdk/src/transaction_context.rs#L223-L230 */
     247             : 
     248             : int
     249             : fd_exec_txn_ctx_get_account_at_index( fd_exec_txn_ctx_t *             ctx,
     250             :                                       ushort                          idx,
     251             :                                       fd_txn_account_t * *            account,
     252             :                                       fd_txn_account_condition_fn_t * condition );
     253             : 
     254             : /* A wrapper around fd_exec_txn_ctx_get_account_at_index that obtains an
     255             :    account from the transaction context by its pubkey. */
     256             : 
     257             : int
     258             : fd_exec_txn_ctx_get_account_with_key( fd_exec_txn_ctx_t *             ctx,
     259             :                                       fd_pubkey_t const *             pubkey,
     260             :                                       fd_txn_account_t * *            account,
     261             :                                       fd_txn_account_condition_fn_t * condition );
     262             : 
     263             : /* Gets an executable (program data) account via its pubkey. */
     264             : 
     265             : int
     266             : fd_exec_txn_ctx_get_executable_account( fd_exec_txn_ctx_t *             ctx,
     267             :                                         fd_pubkey_t const *             pubkey,
     268             :                                         fd_txn_account_t * *            account,
     269             :                                         fd_txn_account_condition_fn_t * condition );
     270             : 
     271             : /* Mirrors Agave function solana_sdk::transaction_context::get_key_of_account_at_index
     272             : 
     273             :    https://github.com/anza-xyz/agave/blob/v2.1.14/sdk/src/transaction_context.rs#L212 */
     274             : 
     275             : int
     276             : fd_exec_txn_ctx_get_key_of_account_at_index( fd_exec_txn_ctx_t *  ctx,
     277             :                                              ushort               idx,
     278             :                                              fd_pubkey_t const * * key );
     279             : 
     280             : void
     281             : fd_exec_txn_ctx_reset_return_data( fd_exec_txn_ctx_t * ctx );
     282             : 
     283             : /* In agave, the writable accounts cache is populated by this below function.
     284             :    This cache is then referenced to determine if a transaction account is
     285             :    writable or not.
     286             : 
     287             :    The overall logic is as follows: an account can be passed
     288             :    in as writable based on the signature and readonly signature as they are
     289             :    passed in by the transaction message. However, the account's writable
     290             :    status will be demoted if either of the two conditions are met:
     291             :    1. If the account is in the set of reserved pubkeys
     292             :    2. If the account is the program id AND the upgradeable loader account is in
     293             :       the set of transaction accounts. */
     294             : /* https://github.com/anza-xyz/agave/blob/v2.1.1/sdk/program/src/message/versions/v0/loaded.rs#L137-L150 */
     295             : 
     296             : int
     297             : fd_exec_txn_ctx_account_is_writable_idx( fd_exec_txn_ctx_t const * txn_ctx, ushort idx );
     298             : 
     299             : /* This flat function does the same as the function above, but uses the
     300             :    exact arguments needed instead of the full fd_exec_txn_ctx_t */
     301             : 
     302             : int
     303             : fd_exec_txn_account_is_writable_idx_flat( const ulong           slot,
     304             :                                           const ushort          idx,
     305             :                                           const fd_pubkey_t *   addr_at_idx,
     306             :                                           const fd_txn_t *      txn_descriptor,
     307             :                                           const fd_features_t * features,
     308             :                                           const uint            bpf_upgradeable_in_txn );
     309             : 
     310             : /* The bpf_upgradeable_in_txn argument of the above function can be
     311             :    obtained by the function below */
     312             : uint
     313             : fd_txn_account_has_bpf_loader_upgradeable( const fd_pubkey_t * account_keys,
     314             :                                            const ulong         accounts_cnt );
     315             : 
     316             : 
     317             : /* Account pre-condition filtering functions
     318             : 
     319             :    Used to filter accounts based on pre-conditions such as existence, is_writable, etc.
     320             :    when obtaining accounts from the transaction context. Passed as a function pointer. */
     321             : 
     322             : int
     323             : fd_txn_account_check_exists( fd_txn_account_t *        acc,
     324             :                              fd_exec_txn_ctx_t const * ctx,
     325             :                              ushort                    idx );
     326             : 
     327             : int
     328             : fd_txn_account_check_is_writable( fd_txn_account_t *        acc,
     329             :                                   fd_exec_txn_ctx_t const * ctx,
     330             :                                   ushort                    idx );
     331             : 
     332             : /* The fee payer is a valid modifiable account if it is passed in as writable
     333             :    in the message via a valid signature. We ignore if the account has been
     334             :    demoted or not (see fd_exec_txn_ctx_account_is_writable_idx) for more details.
     335             :    Agave and Firedancer will reject the fee payer if the transaction message
     336             :    doesn't have a writable signature. */
     337             : 
     338             : int
     339             : fd_txn_account_check_fee_payer_writable( fd_txn_account_t *        acc,
     340             :                                          fd_exec_txn_ctx_t const * ctx,
     341             :                                          ushort                    idx );
     342             : 
     343             : /* Checks if the account is mutable and borrows the account mutably.
     344             : 
     345             :    The borrow is an acquired write on the account object.
     346             :    The caller is responsible for releasing the write via
     347             :    fd_txn_account_release_write.
     348             : 
     349             :    TODO: Agave doesn't need to check if the account is mutable
     350             :    because it uses Writable/Readable traits for accounts. We
     351             :    should have a similar concept to abstract away fd_txn_account_t's
     352             :    const_meta and meta fields. */
     353             : 
     354             : int
     355             : fd_txn_account_check_borrow_mut( fd_txn_account_t *        acc,
     356             :                                  fd_exec_txn_ctx_t const * ctx,
     357             :                                  ushort                    idx );
     358             : 
     359             : 
     360             : FD_PROTOTYPES_END
     361             : 
     362             : #endif /* HEADER_fd_src_flamenco_runtime_context_fd_exec_txn_ctx_h */