Struct ReadRequest 

#[repr(C)]
pub struct ReadRequest {
    pub ino: u64,
    pub offset: u64,
    pub count: u32,
    pub _pad: u32,
}

Read request.

Wire layout: ino @ 0..8, offset @ 8..16, count @ 16..20, _pad @ 20..24.

Fields

ino: u64

Inode number of the file to read.

offset: u64

Byte offset in the file to start reading from.

count: u32

Maximum number of bytes to read.

_pad: u32

Implementations

impl ReadRequest

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

Parse a READ request payload. Returns None if truncated.

pub fn encode(msg_type: u32, ino: u64, offset: u64, count: u32) -> IpcMessage

Encode a READ request into a fresh IpcMessage.

pub fn count_usize(&self) -> usize

Number of requested bytes (convenience over count).

Trait Implementations

impl Clone for ReadRequest

fn clone(&self) -> ReadRequest

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ReadRequest

impl Debug for ReadRequest

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

Formats the value using the given formatter.

impl FromBytes for ReadRequest

where u64: FromBytes, u32: 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 ReadRequest

where u64: FromZeros, u32: 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 ReadRequest

where u64: Immutable, u32: Immutable,

impl IntoBytes for ReadRequest

where u64: IntoBytes, u32: 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 ReadRequest

where u64: TryFromBytes, u32: 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.