LineaRollup
CONTRACT_VERSION​
string CONTRACT_VERSION
This is the ABI version and not the reinitialize version.
VERIFIER_SETTER_ROLE​
bytes32 VERIFIER_SETTER_ROLE
The role required to set/add proof verifiers by type.
VERIFIER_UNSETTER_ROLE​
bytes32 VERIFIER_UNSETTER_ROLE
The role required to set/remove proof verifiers by type.
GENESIS_SHNARF​
bytes32 GENESIS_SHNARF
The default genesis shnarf using empty/default hashes and a default state.
SHNARF_EXISTS_DEFAULT_VALUE​
uint256 SHNARF_EXISTS_DEFAULT_VALUE
Value indicating a shnarf exists.
EMPTY_HASH​
bytes32 EMPTY_HASH
The default hash value.
BLS_CURVE_MODULUS​
uint256 BLS_CURVE_MODULUS
The BLS Curve modulus value used.
POINT_EVALUATION_PRECOMPILE_ADDRESS​
address POINT_EVALUATION_PRECOMPILE_ADDRESS
The well-known precompile address for point evaluation.
POINT_EVALUATION_RETURN_DATA_LENGTH​
uint256 POINT_EVALUATION_RETURN_DATA_LENGTH
The expected point evaluation return data length.
POINT_EVALUATION_FIELD_ELEMENTS_LENGTH​
uint256 POINT_EVALUATION_FIELD_ELEMENTS_LENGTH
The expected point evaluation field element length returned.
SIX_MONTHS_IN_SECONDS​
uint256 SIX_MONTHS_IN_SECONDS
In practice, when used, this is expected to be a close approximation to 6 months, and is intentional.
dataFinalStateRootHashes​
mapping(bytes32 => bytes32) dataFinalStateRootHashes
DEPRECATED in favor of the single blobShnarfExists mapping.
dataParents​
mapping(bytes32 => bytes32) dataParents
DEPRECATED in favor of the single blobShnarfExists mapping.
dataShnarfHashes​
mapping(bytes32 => bytes32) dataShnarfHashes
DEPRECATED in favor of the single blobShnarfExists mapping.
dataStartingBlock​
mapping(bytes32 => uint256) dataStartingBlock
DEPRECATED in favor of the single blobShnarfExists mapping.
dataEndingBlock​
mapping(bytes32 => uint256) dataEndingBlock
DEPRECATED in favor of the single blobShnarfExists mapping.
currentL2StoredL1MessageNumber​
uint256 currentL2StoredL1MessageNumber
DEPRECATED in favor of currentFinalizedState hash.
currentL2StoredL1RollingHash​
bytes32 currentL2StoredL1RollingHash
DEPRECATED in favor of currentFinalizedState hash.
currentFinalizedShnarf​
bytes32 currentFinalizedShnarf
Contains the most recent finalized shnarf.
blobShnarfExists​
mapping(bytes32 => uint256) blobShnarfExists
NB: THIS IS THE ONLY MAPPING BEING USED FOR DATA SUBMISSION TRACKING. NB: This was shnarfFinalBlockNumbers and is replaced to indicate only that a shnarf exists with a value of 1.
currentFinalizedState​
bytes32 currentFinalizedState
Hash of the L2 computed L1 message number, rolling hash and finalized timestamp.
fallbackOperator​
address fallbackOperator
The address of the fallback operator.
This address is granted the OPERATOR_ROLE after six months of finalization inactivity by the current operators.
constructor​
constructor() public
initialize​
function initialize(struct ILineaRollup.InitializationData _initializationData) external
Initializes LineaRollup and underlying service dependencies - used for new networks only.
DEFAULT_ADMIN_ROLE is set for the security council. OPERATOR_ROLE is set for operators. Note: This is used for new testnets and local/CI testing, and will not replace existing proxy based contracts.
Parameters​
| Name | Type | Description |
|---|---|---|
| _initializationData | struct ILineaRollup.InitializationData | The initial data used for proof verification. |
reinitializeLineaRollupV6​
function reinitializeLineaRollupV6(struct IPermissionsManager.RoleAddress[] _roleAddresses, struct IPauseManager.PauseTypeRole[] _pauseTypeRoles, struct IPauseManager.PauseTypeRole[] _unpauseTypeRoles, address _fallbackOperator) external
Sets permissions for a list of addresses and their roles as well as initialises the PauseManager pauseType:role mappings and fallback operator.
This function is a reinitializer and can only be called once per version. Should be called using an upgradeAndCall transaction to the ProxyAdmin.
Parameters​
| Name | Type | Description |
|---|---|---|
| _roleAddresses | struct IPermissionsManager.RoleAddress[] | The list of addresses and roles to assign permissions to. |
| _pauseTypeRoles | struct IPauseManager.PauseTypeRole[] | The list of pause types to associate with roles. |
| _unpauseTypeRoles | struct IPauseManager.PauseTypeRole[] | The list of unpause types to associate with roles. |
| _fallbackOperator | address | The address of the fallback operator. |
renounceRole​
function renounceRole(bytes32 _role, address _account) public
Revokes role from the calling account.
Fallback operator cannot renounce role. Reverts with OnlyNonFallbackOperator.
Parameters​
| Name | Type | Description |
|---|---|---|
| _role | bytes32 | The role to renounce. |
| _account | address | The account to renounce - can only be the _msgSender(). |
setVerifierAddress​
function setVerifierAddress(address _newVerifierAddress, uint256 _proofType) external
Adds or updates the verifier contract address for a proof type.
VERIFIER_SETTER_ROLE is required to execute.
Parameters​
| Name | Type | Description |
|---|---|---|
| _newVerifierAddress | address | The address for the verifier contract. |
| _proofType | uint256 | The proof type being set/updated. |
setFallbackOperator​
function setFallbackOperator(uint256 _messageNumber, bytes32 _rollingHash, uint256 _lastFinalizedTimestamp) external
Sets the fallback operator role to the specified address if six months have passed since the last finalization.
Reverts if six months have not passed since the last finalization.
Parameters​
| Name | Type | Description |
|---|---|---|
| _messageNumber | uint256 | Last finalized L1 message number as part of the feedback loop. |
| _rollingHash | bytes32 | Last finalized L1 rolling hash as part of the feedback loop. |
| _lastFinalizedTimestamp | uint256 | Last finalized L2 block timestamp. |
unsetVerifierAddress​
function unsetVerifierAddress(uint256 _proofType) external
Unset the verifier contract address for a proof type.
VERIFIER_UNSETTER_ROLE is required to execute.
Parameters​
| Name | Type | Description |
|---|---|---|
| _proofType | uint256 | The proof type being set/updated. |
submitBlobs​
function submitBlobs(struct ILineaRollup.BlobSubmission[] _blobSubmissions, bytes32 _parentShnarf, bytes32 _finalBlobShnarf) external
Submit one or more EIP-4844 blobs.
OPERATOR_ROLE is required to execute. This should be a blob carrying transaction.
Parameters​
| Name | Type | Description |
|---|---|---|
| _blobSubmissions | struct ILineaRollup.BlobSubmission[] | The data for blob submission including proofs and required polynomials. |
| _parentShnarf | bytes32 | The parent shnarf used in continuity checks as it includes the parentStateRootHash in its computation. |
| _finalBlobShnarf | bytes32 | The expected final shnarf post computation of all the blob shnarfs. |
submitDataAsCalldata​
function submitDataAsCalldata(struct ILineaRollup.CompressedCalldataSubmission _submission, bytes32 _parentShnarf, bytes32 _expectedShnarf) external
Submit blobs using compressed data via calldata.
OPERATOR_ROLE is required to execute.
Parameters​
| Name | Type | Description |
|---|---|---|
| _submission | struct ILineaRollup.CompressedCalldataSubmission | The supporting data for compressed data submission including compressed data. |
| _parentShnarf | bytes32 | The parent shnarf used in continuity checks as it includes the parentStateRootHash in its computation. |
| _expectedShnarf | bytes32 | The expected shnarf post computation of all the submission. |
_computeLastFinalizedState​
function _computeLastFinalizedState(uint256 _messageNumber, bytes32 _rollingHash, uint256 _timestamp) internal pure returns (bytes32 hashedFinalizationState)
Internal function to compute and save the finalization state.
Using assembly this way is cheaper gas wise.
Parameters​
| Name | Type | Description |
|---|---|---|
| _messageNumber | uint256 | Is the last L2 computed L1 message number in the finalization. |
| _rollingHash | bytes32 | Is the last L2 computed L1 rolling hash in the finalization. |
| _timestamp | uint256 | The final timestamp in the finalization. |
_computeShnarf​
function _computeShnarf(bytes32 _parentShnarf, bytes32 _snarkHash, bytes32 _finalStateRootHash, bytes32 _dataEvaluationPoint, bytes32 _dataEvaluationClaim) internal pure returns (bytes32 shnarf)
Internal function to compute the shnarf more efficiently.
Using assembly this way is cheaper gas wise.
Parameters​
| Name | Type | Description |
|---|---|---|
| _parentShnarf | bytes32 | The shnarf of the parent data item. |
| _snarkHash | bytes32 | Is the computed hash for compressed data (using a SNARK-friendly hash function) that aggregates per data submission to be used in public input. |
| _finalStateRootHash | bytes32 | The final state root hash of the data being submitted. |
| _dataEvaluationPoint | bytes32 | The data evaluation point. |
| _dataEvaluationClaim | bytes32 | The data evaluation claim. |
_verifyPointEvaluation​
function _verifyPointEvaluation(bytes32 _currentDataHash, uint256 _dataEvaluationPoint, uint256 _dataEvaluationClaim, bytes _kzgCommitment, bytes _kzgProof) internal view
Performs point evaluation for the compressed blob.
_dataEvaluationPoint is modular reduced to be lower than the BLS_CURVE_MODULUS for precompile checks.
Parameters​
| Name | Type | Description |
|---|---|---|
| _currentDataHash | bytes32 | The current blob versioned hash. |
| _dataEvaluationPoint | uint256 | The data evaluation point. |
| _dataEvaluationClaim | uint256 | The data evaluation claim. |
| _kzgCommitment | bytes | The blob KZG commitment. |
| _kzgProof | bytes | The blob KZG point proof. |
finalizeBlocks​
function finalizeBlocks(bytes _aggregatedProof, uint256 _proofType, struct ILineaRollup.FinalizationDataV3 _finalizationData) external
Finalize compressed blocks with proof.
OPERATOR_ROLE is required to execute.
Parameters​
| Name | Type | Description |
|---|---|---|
| _aggregatedProof | bytes | The aggregated proof. |
| _proofType | uint256 | The proof type. |
| _finalizationData | struct ILineaRollup.FinalizationDataV3 | The full finalization data. |
_finalizeBlocks​
function _finalizeBlocks(struct ILineaRollup.FinalizationDataV3 _finalizationData, uint256 _lastFinalizedBlock) internal returns (bytes32 finalShnarf)
Internal function to finalize compressed blocks.
Parameters​
| Name | Type | Description |
|---|---|---|
| _finalizationData | struct ILineaRollup.FinalizationDataV3 | The full finalization data. |
| _lastFinalizedBlock | uint256 | The last finalized block. |
Return Values​
| Name | Type | Description |
|---|---|---|
| finalShnarf | bytes32 | The final computed shnarf in finalizing. |
_validateL2ComputedRollingHash​
function _validateL2ComputedRollingHash(uint256 _rollingHashMessageNumber, bytes32 _rollingHash) internal view
Internal function to validate l1 rolling hash.
Parameters​
| Name | Type | Description |
|---|---|---|
| _rollingHashMessageNumber | uint256 | Message number associated with the rolling hash as computed on L2. |
| _rollingHash | bytes32 | L1 rolling hash as computed on L2. |
_calculateY​
function _calculateY(bytes _data, bytes32 _dataEvaluationPoint) internal pure returns (bytes32 compressedDataComputedY)
Internal function to calculate Y for public input generation.
Each chunk of 32 bytes must start with a 0 byte. The dataEvaluationPoint value is modulo-ed down during the computation and scalar field checking is not needed. There is a hard constraint in the circuit to enforce the polynomial degree limit (4096), which will also be enforced with EIP-4844.
Parameters​
| Name | Type | Description |
|---|---|---|
| _data | bytes | Compressed data from submission data. |
| _dataEvaluationPoint | bytes32 | The data evaluation point. |
Return Values​
| Name | Type | Description |
|---|---|---|
| compressedDataComputedY | bytes32 | The Y calculated value using the Horner method. |