Boilerplate for global fees

programs/marginfi/src/constants.rs

@@ -12,6 +12,8 @@ pub const LIQUIDITY_VAULT_SEED: &str = "liquidity_vault";
 pub const INSURANCE_VAULT_SEED: &str = "insurance_vault";
 pub const FEE_VAULT_SEED: &str = "fee_vault";
 
+pub const FEE_STATE_SEED: &str = "feestate";
+
 pub const EMISSIONS_AUTH_SEED: &str = "emissions_auth_seed";
 pub const EMISSIONS_TOKEN_ACCOUNT_SEED: &str = "emissions_token_account_seed";
 

programs/marginfi/src/state/fee_state.rs

@@ -0,0 +1,35 @@
+use anchor_lang::prelude::*;
+
+use crate::{assert_struct_align, assert_struct_size};
+
+assert_struct_size!(FeeState, 256);
+assert_struct_align!(FeeState, 8);
+
+/// Unique per-program. The Program Owner uses this account to administrate fees collected by the protocol
+#[account(zero_copy)]
+#[repr(C)]
+pub struct FeeState {
+    /// The fee state's own key. A PDA derived from just `b"feestate"`
+    pub key: Pubkey,
+    /// Can modify fees
+    pub global_fee_admin: Pubkey,
+    /// The base wallet for all protocol fees. All SOL fees go to this wallet. All non-SOL fees go
+    /// to the cannonical ATA of this wallet for that asset.
+    pub global_fee_wallet: Pubkey,
+    // Reserved for future use, forces 8-byte alignment
+    pub placeholder0: u64,
+    /// Flat fee assessed when a new bank is initialized, in lamports.
+    /// * In SOL, in native decimals.
+    pub bank_init_flat_sol_fee: u32,
+    pub bump_seed: u8,
+    // Pad to next 8-byte multiple
+    _padding0: [u8; 4],
+    // Pad to 128 bytes
+    _padding1: [u8; 15],
+    // Reserved for future use
+    _reserved0: [u8; 128],
+}
+
+impl FeeState {
+    pub const LEN: usize = std::mem::size_of::<FeeState>();
+}

programs/marginfi/src/state/mod.rs

@@ -1,3 +1,4 @@
+pub mod fee_state;
 pub mod marginfi_account;
 pub mod marginfi_group;
 pub mod price;