Adds stable layout types to pass to the runtime (solana-labs#30192)

program-runtime/src/invoke_context.rs

@@ -17,11 +17,12 @@ use {
         bpf_loader_upgradeable::{self, UpgradeableLoaderState},
         feature_set::{enable_early_verification_of_account_modifications, FeatureSet},
         hash::Hash,
-        instruction::{AccountMeta, Instruction, InstructionError},
+        instruction::{AccountMeta, InstructionError},
         native_loader,
         pubkey::Pubkey,
         rent::Rent,
         saturating_add_assign,
+        stable_layout::stable_instruction::StableInstruction,
         transaction_context::{
             IndexOfAccount, InstructionAccount, TransactionAccount, TransactionContext,
         },
@@ -489,7 +490,7 @@ impl<'a> InvokeContext<'a> {
     /// Entrypoint for a cross-program invocation from a builtin program
     pub fn native_invoke(
         &mut self,
-        instruction: Instruction,
+        instruction: StableInstruction,
         signers: &[Pubkey],
     ) -> Result<(), InstructionError> {
         let (instruction_accounts, program_indices) =
@@ -509,7 +510,7 @@ impl<'a> InvokeContext<'a> {
     #[allow(clippy::type_complexity)]
     pub fn prepare_instruction(
         &mut self,
-        instruction: &Instruction,
+        instruction: &StableInstruction,
         signers: &[Pubkey],
     ) -> Result<(Vec<InstructionAccount>, Vec<IndexOfAccount>), InstructionError> {
         // Finds the index of each account in the instruction by its pubkey.
@@ -1036,7 +1037,7 @@ mod tests {
         super::*,
         crate::compute_budget,
         serde::{Deserialize, Serialize},
-        solana_sdk::account::WritableAccount,
+        solana_sdk::{account::WritableAccount, instruction::Instruction},
     };
 
     #[derive(Debug, Serialize, Deserialize)]
@@ -1161,7 +1162,7 @@ mod tests {
                     assert_eq!(result, Err(InstructionError::UnbalancedInstruction));
                     result?;
                     invoke_context
-                        .native_invoke(inner_instruction, &[])
+                        .native_invoke(inner_instruction.into(), &[])
                         .and(invoke_context.pop())?;
                 }
                 MockInstruction::UnbalancedPop => instruction_context
@@ -1336,7 +1337,7 @@ mod tests {
             let inner_instruction =
                 Instruction::new_with_bincode(callee_program_id, &case.0, metas.clone());
             let result = invoke_context
-                .native_invoke(inner_instruction, &[])
+                .native_invoke(inner_instruction.into(), &[])
                 .and(invoke_context.pop());
             assert_eq!(result, case.1);
         }
@@ -1359,6 +1360,7 @@ mod tests {
                 },
                 metas.clone(),
             );
+            let inner_instruction = StableInstruction::from(inner_instruction);
             let (inner_instruction_accounts, program_indices) = invoke_context
                 .prepare_instruction(&inner_instruction, &[])
                 .unwrap();

program-test/src/lib.rs

@@ -40,6 +40,7 @@ use {
         pubkey::Pubkey,
         rent::Rent,
         signature::{Keypair, Signer},
+        stable_layout::stable_instruction::StableInstruction,
         sysvar::{Sysvar, SysvarId},
     },
     solana_vote_program::vote_state::{self, VoteState, VoteStateVersions},
@@ -227,6 +228,7 @@ impl solana_sdk::program_stubs::SyscallStubs for SyscallStubs {
         account_infos: &[AccountInfo],
         signers_seeds: &[&[&[u8]]],
     ) -> ProgramResult {
+        let instruction = StableInstruction::from(instruction.clone());
         let invoke_context = get_invoke_context();
         let log_collector = invoke_context.get_log_collector();
         let transaction_context = &invoke_context.transaction_context;
@@ -249,7 +251,7 @@ impl solana_sdk::program_stubs::SyscallStubs for SyscallStubs {
             .collect::<Vec<_>>();
 
         let (instruction_accounts, program_indices) = invoke_context
-            .prepare_instruction(instruction, &signers)
+            .prepare_instruction(&instruction, &signers)
             .unwrap();
 
         // Copy caller's account_info modifications into invoke_context accounts

programs/address-lookup-table/src/processor.rs

@@ -144,18 +144,18 @@ impl Processor {
 
         if required_lamports > 0 {
             invoke_context.native_invoke(
-                system_instruction::transfer(&payer_key, &table_key, required_lamports),
+                system_instruction::transfer(&payer_key, &table_key, required_lamports).into(),
                 &[payer_key],
             )?;
         }
 
         invoke_context.native_invoke(
-            system_instruction::allocate(&table_key, table_account_data_len as u64),
+            system_instruction::allocate(&table_key, table_account_data_len as u64).into(),
             &[table_key],
         )?;
 
         invoke_context.native_invoke(
-            system_instruction::assign(&table_key, &crate::id()),
+            system_instruction::assign(&table_key, &crate::id()).into(),
             &[table_key],
         )?;
 
@@ -332,7 +332,7 @@ impl Processor {
             drop(payer_account);
 
             invoke_context.native_invoke(
-                system_instruction::transfer(&payer_key, &table_key, required_lamports),
+                system_instruction::transfer(&payer_key, &table_key, required_lamports).into(),
                 &[payer_key],
             )?;
         }

programs/bpf_loader/Cargo.toml

@@ -22,6 +22,9 @@ solana-zk-token-sdk = { path = "../../zk-token-sdk", version = "=1.16.0" }
 solana_rbpf = "=0.2.38"
 thiserror = "1.0"
 
+[dev-dependencies]
+memoffset = "0.8"
+
 [lib]
 crate-type = ["lib"]
 name = "solana_bpf_loader_program"

programs/bpf_loader/src/lib.rs

@@ -736,7 +736,7 @@ fn process_loader_upgradeable_instruction(
                 .iter()
                 .map(|seeds| Pubkey::create_program_address(seeds, caller_program_id))
                 .collect::<Result<Vec<Pubkey>, solana_sdk::pubkey::PubkeyError>>()?;
-            invoke_context.native_invoke(instruction, signers.as_slice())?;
+            invoke_context.native_invoke(instruction.into(), signers.as_slice())?;
 
             // Load and verify the program bits
             let transaction_context = &invoke_context.transaction_context;
@@ -1360,7 +1360,8 @@ fn process_loader_upgradeable_instruction(
                 )?;
 
                 invoke_context.native_invoke(
-                    system_instruction::transfer(&payer_key, &programdata_key, required_payment),
+                    system_instruction::transfer(&payer_key, &programdata_key, required_payment)
+                        .into(),
                     &[],
                 )?;
             }

programs/bpf_loader/src/syscalls/cpi.rs

@@ -3,6 +3,7 @@ use {
     crate::declare_syscall,
     solana_sdk::{
         feature_set::enable_bpf_loader_set_authority_checked_ix,
+        stable_layout::stable_instruction::StableInstruction,
         syscalls::{
             MAX_CPI_ACCOUNT_INFOS, MAX_CPI_INSTRUCTION_ACCOUNTS, MAX_CPI_INSTRUCTION_DATA_LEN,
         },
@@ -211,7 +212,7 @@ trait SyscallInvokeSigned {
         addr: u64,
         memory_mapping: &mut MemoryMapping,
         invoke_context: &mut InvokeContext,
-    ) -> Result<Instruction, EbpfError>;
+    ) -> Result<StableInstruction, EbpfError>;
     fn translate_accounts<'a>(
         instruction_accounts: &[InstructionAccount],
         program_indices: &[IndexOfAccount],
@@ -258,8 +259,8 @@ impl SyscallInvokeSigned for SyscallInvokeSignedRust {
         addr: u64,
         memory_mapping: &mut MemoryMapping,
         invoke_context: &mut InvokeContext,
-    ) -> Result<Instruction, EbpfError> {
-        let ix = translate_type::<Instruction>(
+    ) -> Result<StableInstruction, EbpfError> {
+        let ix = translate_type::<StableInstruction>(
             memory_mapping,
             addr,
             invoke_context.get_check_aligned(),
@@ -296,10 +297,11 @@ impl SyscallInvokeSigned for SyscallInvokeSignedRust {
             invoke_context.get_check_size(),
         )?
         .to_vec();
-        Ok(Instruction {
+
+        Ok(StableInstruction {
+            accounts: accounts.into(),
+            data: data.into(),
             program_id: ix.program_id,
-            accounts,
-            data,
         })
     }
 
@@ -469,7 +471,7 @@ impl SyscallInvokeSigned for SyscallInvokeSignedC {
         addr: u64,
         memory_mapping: &mut MemoryMapping,
         invoke_context: &mut InvokeContext,
-    ) -> Result<Instruction, EbpfError> {
+    ) -> Result<StableInstruction, EbpfError> {
         let ix_c = translate_type::<SolInstruction>(
             memory_mapping,
             addr,
@@ -530,10 +532,10 @@ impl SyscallInvokeSigned for SyscallInvokeSignedC {
             })
             .collect::<Result<Vec<AccountMeta>, EbpfError>>()?;
 
-        Ok(Instruction {
+        Ok(StableInstruction {
+            accounts: accounts.into(),
+            data: data.into(),
             program_id: *program_id,
-            accounts,
-            data,
         })
     }
 
@@ -1128,6 +1130,7 @@ mod tests {
         solana_sdk::{
             account::{Account, AccountSharedData},
             clock::Epoch,
+            instruction::Instruction,
             rent::Rent,
             transaction_context::{TransactionAccount, TransactionContext},
         },
@@ -1693,12 +1696,12 @@ mod tests {
         fn into_region(self, vm_addr: u64) -> (Vec<u8>, MemoryRegion) {
             let accounts_len = mem::size_of::<AccountMeta>() * self.accounts.len();
 
-            let size = mem::size_of::<Instruction>() + accounts_len + self.data.len();
+            let size = mem::size_of::<StableInstruction>() + accounts_len + self.data.len();
 
             let mut data = vec![0; size];
 
             let vm_addr = vm_addr as usize;
-            let accounts_addr = vm_addr + mem::size_of::<Instruction>();
+            let accounts_addr = vm_addr + mem::size_of::<StableInstruction>();
             let data_addr = accounts_addr + accounts_len;
 
             let ins = Instruction {
@@ -1714,6 +1717,7 @@ mod tests {
                     Vec::from_raw_parts(data_addr as *mut _, self.data.len(), self.data.len())
                 },
             };
+            let ins = StableInstruction::from(ins);
 
             unsafe {
                 ptr::write_unaligned(data.as_mut_ptr().cast(), ins);

programs/bpf_loader/src/syscalls/mod.rs

@@ -44,7 +44,7 @@ use {
         },
         hash::{Hasher, HASH_BYTES},
         instruction::{
-            AccountMeta, Instruction, InstructionError, ProcessedSiblingInstruction,
+            AccountMeta, InstructionError, ProcessedSiblingInstruction,
             TRANSACTION_LEVEL_STACK_HEIGHT,
         },
         keccak, native_loader,
@@ -1821,7 +1821,9 @@ mod tests {
             bpf_loader,
             fee_calculator::FeeCalculator,
             hash::hashv,
+            instruction::Instruction,
             program::check_type_assumptions,
+            stable_layout::stable_instruction::StableInstruction,
             sysvar::{clock::Clock, epoch_schedule::EpochSchedule, rent::Rent},
             transaction_context::TransactionContext,
         },
@@ -1936,17 +1938,18 @@ mod tests {
             &"foobar",
             vec![AccountMeta::new(solana_sdk::pubkey::new_rand(), false)],
         );
+        let instruction = StableInstruction::from(instruction);
         let addr = &instruction as *const _ as u64;
         let mut memory_region = MemoryRegion {
             host_addr: addr,
             vm_addr: 0x100000000,
-            len: std::mem::size_of::<Instruction>() as u64,
+            len: std::mem::size_of::<StableInstruction>() as u64,
             vm_gap_shift: 63,
             is_writable: false,
         };
         let mut memory_mapping = MemoryMapping::new(vec![memory_region.clone()], &config).unwrap();
         let translated_instruction =
-            translate_type::<Instruction>(&memory_mapping, 0x100000000, true).unwrap();
+            translate_type::<StableInstruction>(&memory_mapping, 0x100000000, true).unwrap();
         assert_eq!(instruction, *translated_instruction);
         memory_region.len = 1;
         let memory_region_index = memory_mapping
@@ -1957,7 +1960,7 @@ mod tests {
         memory_mapping
             .replace_region(memory_region_index, memory_region)
             .unwrap();
-        assert!(translate_type::<Instruction>(&memory_mapping, 0x100000000, true).is_err());
+        assert!(translate_type::<StableInstruction>(&memory_mapping, 0x100000000, true).is_err());
     }
 
     #[test]

sdk/program/src/lib.rs

@@ -521,6 +521,7 @@ pub mod serialize_utils;
 pub mod short_vec;
 pub mod slot_hashes;
 pub mod slot_history;
+pub mod stable_layout;
 pub mod stake;
 pub mod stake_history;
 pub mod syscalls;

sdk/program/src/program.rs

@@ -10,6 +10,7 @@
 
 use crate::{
     account_info::AccountInfo, entrypoint::ProgramResult, instruction::Instruction, pubkey::Pubkey,
+    stable_layout::stable_instruction::StableInstruction,
 };
 
 /// Invoke a cross-program instruction.
@@ -292,9 +293,10 @@ pub fn invoke_signed_unchecked(
 ) -> ProgramResult {
     #[cfg(target_os = "solana")]
     {
+        let instruction = StableInstruction::from(instruction.clone());
         let result = unsafe {
             crate::syscalls::sol_invoke_signed_rust(
-                instruction as *const _ as *const u8,
+                &instruction as *const _ as *const u8,
                 account_infos as *const _ as *const u8,
                 account_infos.len() as u64,
                 signers_seeds as *const _ as *const u8,
@@ -432,17 +434,18 @@ pub fn check_type_assumptions() {
             accounts: vec![account_meta1.clone(), account_meta2.clone()],
             data: data.clone(),
         };
+        let instruction = StableInstruction::from(instruction);
         let instruction_addr = &instruction as *const _ as u64;
 
         // program id
-        assert_eq!(offset_of!(Instruction, program_id), 48);
+        assert_eq!(offset_of!(StableInstruction, program_id), 48);
         let pubkey_ptr = (instruction_addr + 48) as *const Pubkey;
         unsafe {
             assert_eq!(*pubkey_ptr, pubkey1);
         }
 
         // accounts
-        assert_eq!(offset_of!(Instruction, accounts), 0);
+        assert_eq!(offset_of!(StableInstruction, accounts), 0);
         let accounts_ptr = (instruction_addr) as *const *const AccountMeta;
         let accounts_cap = (instruction_addr + 8) as *const usize;
         let accounts_len = (instruction_addr + 16) as *const usize;
@@ -455,7 +458,7 @@ pub fn check_type_assumptions() {
         }
 
         // data
-        assert_eq!(offset_of!(Instruction, data), 24);
+        assert_eq!(offset_of!(StableInstruction, data), 24);
         let data_ptr = (instruction_addr + 24) as *const *const [u8; 5];
         let data_cap = (instruction_addr + 24 + 8) as *const usize;
         let data_len = (instruction_addr + 24 + 16) as *const usize;

sdk/program/src/stable_layout.rs

@@ -0,0 +1,10 @@
+#![doc(hidden)]
+//! Types with stable memory layouts
+//!
+//! Internal use only; here be dragons!
+
+pub mod stable_instruction;
+pub mod stable_rc;
+pub mod stable_ref_cell;
+pub mod stable_slice;
+pub mod stable_vec;