Struct InlineBlobHeader 

#[repr(C)]
pub struct InlineBlobHeader {
    pub len: u16,
    pub kind: u16,
}

Minimal framing header for variable-length data embedded in an IPC payload.

Layout (4 bytes): [len: u16, kind: u16].

• len: number of data bytes that follow this header.
• kind: discriminator (e.g. 0 = path, 1 = blob data).

This lets you embed a variable-length segment in the 240-byte payload without external allocators or serde.

Example

use strat9_abi::ipc_codec::InlineBlobHeader;

let mut payload = [0u8; 240];
// Write a file path at offset 4
InlineBlobHeader::write(&mut payload, 4, 0, b"/etc/passwd").unwrap();

// Parse it back
let hdr = InlineBlobHeader::parse(&payload, 4).unwrap();
assert_eq!(hdr.len, 11); // "/etc/passwd".len()
assert_eq!(hdr.kind, 0);

Fields

len: u16

Number of data bytes following this header.

kind: u16

Discriminator: 0 = path, 1 = blob data, etc.

Implementations

impl InlineBlobHeader

pub const SIZE: usize = 4

Number of wire bytes consumed by the header itself.

pub fn write( payload: &mut [u8], off: usize, kind: u16, data: &[u8], ) -> Option<()>

Write InlineBlobHeader(len, kind) followed by data into payload[off..].

Returns None if the header + data do not fit in the payload slice.

pub fn parse(payload: &[u8], off: usize) -> Option<Self>

Parse an InlineBlobHeader from payload[off..].

Returns None if the 4 header bytes are out of bounds.

pub fn total_size(&self) -> usize

Return the total wire size of this header + its inline data.

Trait Implementations

impl Clone for InlineBlobHeader

fn clone(&self) -> InlineBlobHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for InlineBlobHeader

impl Debug for InlineBlobHeader

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

Formats the value using the given formatter.

impl FromBytes for InlineBlobHeader

where u16: FromBytes,

fn read_from_bytes(source: &[u8]) -> Result<Self, SizeError<&[u8], Self>>

where Self: Sized,

Reads a copy of Self from the given source.

fn read_from_prefix( source: &[u8], ) -> Result<(Self, &[u8]), SizeError<&[u8], Self>>

where Self: Sized,

Reads a copy of Self from the prefix of the given source.

fn read_from_suffix( source: &[u8], ) -> Result<(&[u8], Self), SizeError<&[u8], Self>>

where Self: Sized,

Reads a copy of Self from the suffix of the given source.

impl FromZeros for InlineBlobHeader

where u16: FromZeros,

fn zero(&mut self)

Overwrites self with zeros.

fn new_zeroed() -> Self

where Self: Sized,

Creates an instance of Self from zeroed bytes.

impl Immutable for InlineBlobHeader

where u16: Immutable,

impl IntoBytes for InlineBlobHeader

where u16: IntoBytes, (): PaddingFree<Self, { _ }>,

fn as_bytes(&self) -> &[u8]

where Self: Immutable,

Gets the bytes of this value.

fn as_mut_bytes(&mut self) -> &mut [u8]

where Self: FromBytes,

Gets the bytes of this value mutably.

fn write_to(&self, dst: &mut [u8]) -> Result<(), SizeError<&Self, &mut [u8]>>

where Self: Immutable,

Writes a copy of self to dst.

fn write_to_prefix( &self, dst: &mut [u8], ) -> Result<(), SizeError<&Self, &mut [u8]>>

where Self: Immutable,

Writes a copy of self to the prefix of dst.

fn write_to_suffix( &self, dst: &mut [u8], ) -> Result<(), SizeError<&Self, &mut [u8]>>

where Self: Immutable,

Writes a copy of self to the suffix of dst.

impl TryFromBytes for InlineBlobHeader

where u16: TryFromBytes,

fn try_read_from_bytes( source: &[u8], ) -> Result<Self, ConvertError<Infallible, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: Sized,

Attempts to read the given source as a Self.

fn try_read_from_prefix( source: &[u8], ) -> Result<(Self, &[u8]), ConvertError<Infallible, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: Sized,

Attempts to read a Self from the prefix of the given source.

fn try_read_from_suffix( source: &[u8], ) -> Result<(&[u8], Self), ConvertError<Infallible, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: Sized,

Attempts to read a Self from the suffix of the given source.