Struct WalHeader 

pub struct WalHeader {
    pub magic: u32,
    pub format_version: u32,
    pub page_size: u32,
    pub checkpoint_seq: u32,
    pub salts: WalSalts,
    pub checksum: SqliteWalChecksum,
}

Parsed 32-byte WAL header.

Layout:

Offset  Size  Description
  0       4   Magic: 0x377F0682 (LE checksum) or 0x377F0683 (BE checksum)
  4       4   Format version: 3007000
  8       4   Page size in bytes
 12       4   Checkpoint sequence number
 16       4   Salt-1
 20       4   Salt-2
 24       4   Checksum-1 (of bytes 0..24)
 28       4   Checksum-2 (of bytes 0..24)

Fields

magic: u32

Magic number: WAL_MAGIC_LE or WAL_MAGIC_BE.

format_version: u32

Format version (must be WAL_FORMAT_VERSION).

page_size: u32

Database page size in bytes.

checkpoint_seq: u32

Checkpoint sequence number.

salts: WalSalts

Salt pair for frame validation.

checksum: SqliteWalChecksum

Header checksum (covers bytes 0..24).

Implementations

impl WalHeader

pub const fn big_endian_checksum(&self) -> bool

Whether the magic indicates big-endian checksum words.

pub fn from_bytes(buf: &[u8]) -> Result<Self>

Parse a 32-byte WAL header from raw bytes.

pub fn to_bytes(&self) -> Result<[u8; 32]>

Serialize this header into a 32-byte buffer and compute the checksum.

Trait Implementations

impl Clone for WalHeader

fn clone(&self) -> WalHeader

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for WalHeader

impl Debug for WalHeader

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for WalHeader

impl PartialEq for WalHeader

fn eq(&self, other: &WalHeader) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for WalHeader