Struct FileIdentity 

#[repr(C)]
pub struct FileIdentity {
    pub file_id: [u8; 16],
    pub parent_id: [u8; 16],
    pub parent_hash: [u8; 32],
    pub lineage_depth: u32,
}

File identity embedded in the Level0Root reserved area at offset 0xF00.

Exactly 68 bytes, fitting within the 252-byte reserved area. Old readers that ignore the reserved area see zeros and continue working.

Layout:

Offset	Size	Field
0x00	16	file_id
0x10	16	parent_id
0x20	32	parent_hash
0x40	4	lineage_depth

Fields

file_id: [u8; 16]

Unique identifier for this file (UUID-style, 16 bytes).

parent_id: [u8; 16]

Identifier of the parent file (all zeros for root files).

parent_hash: [u8; 32]

SHAKE-256-256 hash of the parent’s manifest (all zeros for root).

lineage_depth: u32

Lineage depth: 0 for root, incremented for each derivation.

Implementations

impl FileIdentity

pub const fn new_root(file_id: [u8; 16]) -> Self

Create a root identity (no parent) with the given file_id.

pub fn is_root(&self) -> bool

Returns true if this is a root identity (no parent).

pub const fn zeroed() -> Self

Create an all-zero identity (default for files without lineage).

pub fn to_bytes(&self) -> [u8; 68]

Serialize to a 68-byte array.

pub fn from_bytes(data: &[u8; 68]) -> Self

Deserialize from a 68-byte slice.

Trait Implementations

impl Clone for FileIdentity

fn clone(&self) -> FileIdentity

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FileIdentity

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

Formats the value using the given formatter.

impl PartialEq for FileIdentity

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for FileIdentity

impl Eq for FileIdentity

impl StructuralPartialEq for FileIdentity