Enum SystemInstruction 

pub enum SystemInstruction {
    CreateAccount {
        lamports: u64,
        space: u64,
    },
    Assign,
    Transfer {
        lamports: u64,
    },
    CreateAccountWithSeed {
        lamports: u64,
        space: u64,
    },
    AdvanceNonceAccount,
    WithdrawNonceAccount {
        lamports: u64,
    },
    InitializeNonceAccount,
    AuthorizeNonceAccount,
    Allocate {
        space: u64,
    },
    AllocateWithSeed {
        space: u64,
    },
    AssignWithSeed,
    TransferWithSeed {
        lamports: u64,
    },
    UpgradeNonceAccount,
}

Solana System Program instructions.

The System Program uses a 4-byte discriminator (u32 little-endian). Each variant’s discriminator is its position in this enum (0, 1, 2, …).

Variants

CreateAccount

Create a new account (index 0) Data: lamports (u64) + space (u64) + owner (Pubkey)

Fields

lamports: u64

space: u64

Assign

Assign account to a program (index 1) Data: owner (Pubkey)

Transfer

Transfer lamports (index 2) Data: lamports (u64)

Fields

lamports: u64

CreateAccountWithSeed

Create account with seed (index 3) Data: base (Pubkey) + seed (String) + lamports (u64) + space (u64) + owner (Pubkey)

Fields

lamports: u64

space: u64

AdvanceNonceAccount

Advance nonce account (index 4)

WithdrawNonceAccount

Withdraw from nonce account (index 5) Data: lamports (u64)

Fields

lamports: u64

InitializeNonceAccount

Initialize nonce account (index 6) Data: authority (Pubkey)

AuthorizeNonceAccount

Authorize nonce account (index 7) Data: new_authority (Pubkey)

Allocate

Allocate space for account (index 8) Data: space (u64)

Fields

space: u64

AllocateWithSeed

Allocate space with seed (index 9) Data: base (Pubkey) + seed (String) + space (u64) + owner (Pubkey)

Fields

space: u64

AssignWithSeed

Assign account with seed (index 10) Data: base (Pubkey) + seed (String) + owner (Pubkey)

TransferWithSeed

Transfer with seed (index 11) Data: lamports (u64) + from_seed (String) + from_owner (Pubkey)

Fields

lamports: u64

UpgradeNonceAccount

Upgrade nonce account (index 12)