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svsp.md

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SVSP

SOL value calculator program for Single Validator Stake Pool program.

To avoid being rugged by compromise of the SVSP program, this program records the last updated slot of the SVSP program and errors if the current one does not match.

A manager is solely authorized to whitelist the current SVSP program deployed.

Compatible with generic_pool interface

Accounts

SvspCalculatorState

The SvspCalculatorState singleton is located at PDA ["state"].

Schema

The struct is bytemuck/zero_copy. Explicit manual padding is required, but not shown.

Name Value Type
manager The SOL value calculator program manager Pubkey
last_upgrade_slot The last recorded slot at which the SVSP program was upgraded u64

Instructions

Common Interface

LstToSol

Accounts
Account Description Read/Write (R/W) Signer (Y/N)
lst_mint See interface R N
state The SvspCalculatorState singleton PDA R N
pool The SVSP pool account R N
svsp_program SVSP program R N
svsp_program_data SVSP program executable data R N
Procedure
  • Check state PDA
  • Check SVSP program hardcoded address
  • Check SVSP program data matches that on SVSP program
  • Check state.last_upgrade_slot matches that on program data
  • Check pool program ownership + AccountType, lst mint PDA.
  • Calculate output SOL based on code copied from process_withdraw()

SolToLst

Accounts
Account Description Read/Write (R/W) Signer (Y/N)
lst_mint See interface R N
state The SvspCalculatorState singleton PDA R N
pool The SVSP pool account R N
svsp_program SVSP program R N
svsp_program_data SVSP program executable data R N
Procedure
  • Check state PDA
  • Check SVSP program hardcoded address
  • Check SVSP program data matches that on SVSP program
  • Check state.last_upgrade_slot matches that on program data
  • Check pool program ownership + AccountType, lst mint PDA.
  • Calculate LST amount by reversing procedure in process_withdraw()

Management Instructions

UpdateLastUpgradeSlot

Update last_upgrade_slot to SVSP program's current one.

Data

Name Value Type
discriminant 253 u8
Accounts
Account Description Read/Write (R/W) Signer (Y/N)
manager The manager pubkey R Y
state The SvspCalculatorState singleton PDA W N
svsp_program SVSP program R N
svsp_program_data SVSP program executable data R N
Procedure
  • Check state PDA
  • Check manager pubkey and signature
  • Check SVSP program hardcoded address
  • Check SVSP program data matches that on SVSP program
  • Write last_upgrade_slot to state

SetManager

Set a new manager.

Data

Name Value Type
discriminant 254 u8
Accounts
Account Description Read/Write (R/W) Signer (Y/N)
manager The manager pubkey R Y
new_manager The new manager to set R N
state The SvspCalculatorState singleton PDA W N
Procedure
  • Check state PDA
  • Check manager pubkey and signature
  • Write new_manager to state

Init

Initialize SvspCalculatorState, can only be called once.

Data

Name Value Type
discriminant 255 u8
Accounts
Account Description Read/Write (R/W) Signer (Y/N)
state The SvspCalculatorState singleton PDA W N
Procedure
  • Initialize state
  • Set manager to initial hardcoded manager
  • Set last_upgrade_slot to 0