Struct vmm_vhost::message::VhostUserShmemMapMsg

#[repr(C, packed(1))]
pub struct VhostUserShmemMapMsg {
    pub flags: VhostUserShmemMapMsgFlags,
    pub shmid: u8,
    padding: [u8; 6],
    pub shm_offset: u64,
    pub fd_offset: u64,
    pub len: u64,
}

Backend request message to map a file into a shared memory region.

Fields

flags: VhostUserShmemMapMsgFlags

Flags for the mmap operation

shmid: u8

Shared memory region id.

padding: [u8; 6]

shm_offset: u64

Offset into the shared memory region.

fd_offset: u64

File offset.

len: u64

Size of region to map.

Implementations

impl VhostUserShmemMapMsg

pub fn new( shmid: u8, shm_offset: u64, fd_offset: u64, len: u64, flags: VhostUserShmemMapMsgFlags ) -> Self

New instance of VhostUserShmemMapMsg struct

Trait Implementations

impl AsBytes for VhostUserShmemMapMsg

where VhostUserShmemMapMsgFlags: AsBytes, u8: AsBytes, [u8; 6]: AsBytes, u64: AsBytes,

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

Gets the bytes of this value.

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

where Self: FromBytes,

Gets the bytes of this value mutably.

fn write_to(&self, bytes: &mut [u8]) -> Option<()>

Writes a copy of self to bytes.

fn write_to_prefix(&self, bytes: &mut [u8]) -> Option<()>

Writes a copy of self to the prefix of bytes.

fn write_to_suffix(&self, bytes: &mut [u8]) -> Option<()>

Writes a copy of self to the suffix of bytes.

impl Clone for VhostUserShmemMapMsg

fn clone(&self) -> VhostUserShmemMapMsg

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Default for VhostUserShmemMapMsg

fn default() -> VhostUserShmemMapMsg

Returns the “default value” for a type.

impl FromBytes for VhostUserShmemMapMsg

where VhostUserShmemMapMsgFlags: FromBytes, u8: FromBytes, [u8; 6]: FromBytes, u64: FromBytes,

fn ref_from(bytes: &[u8]) -> Option<&Self>

where Self: Sized,

Interprets the given bytes as a &Self without copying.

fn ref_from_prefix(bytes: &[u8]) -> Option<&Self>

where Self: Sized,

Interprets the prefix of the given bytes as a &Self without copying.

fn ref_from_suffix(bytes: &[u8]) -> Option<&Self>

where Self: Sized,

Interprets the suffix of the given bytes as a &Self without copying.

fn mut_from(bytes: &mut [u8]) -> Option<&mut Self>

where Self: Sized + AsBytes,

Interprets the given bytes as a &mut Self without copying.

fn mut_from_prefix(bytes: &mut [u8]) -> Option<&mut Self>

where Self: Sized + AsBytes,

Interprets the prefix of the given bytes as a &mut Self without copying.

fn mut_from_suffix(bytes: &mut [u8]) -> Option<&mut Self>

where Self: Sized + AsBytes,

Interprets the suffix of the given bytes as a &mut Self without copying.

fn slice_from(bytes: &[u8]) -> Option<&[Self]>

where Self: Sized,

Interprets the given bytes as a &[Self] without copying.

fn slice_from_prefix(bytes: &[u8], count: usize) -> Option<(&[Self], &[u8])>

where Self: Sized,

Interprets the prefix of the given bytes as a &[Self] with length equal to count without copying.

fn slice_from_suffix(bytes: &[u8], count: usize) -> Option<(&[u8], &[Self])>

where Self: Sized,

Interprets the suffix of the given bytes as a &[Self] with length equal to count without copying.

fn mut_slice_from(bytes: &mut [u8]) -> Option<&mut [Self]>

where Self: Sized + AsBytes,

Interprets the given bytes as a &mut [Self] without copying.

fn mut_slice_from_prefix( bytes: &mut [u8], count: usize ) -> Option<(&mut [Self], &mut [u8])>

where Self: Sized + AsBytes,

Interprets the prefix of the given bytes as a &mut [Self] with length equal to count without copying.

fn mut_slice_from_suffix( bytes: &mut [u8], count: usize ) -> Option<(&mut [u8], &mut [Self])>

where Self: Sized + AsBytes,

Interprets the suffix of the given bytes as a &mut [Self] with length equal to count without copying.

fn read_from(bytes: &[u8]) -> Option<Self>

where Self: Sized,

Reads a copy of Self from bytes.

fn read_from_prefix(bytes: &[u8]) -> Option<Self>

where Self: Sized,

Reads a copy of Self from the prefix of bytes.

fn read_from_suffix(bytes: &[u8]) -> Option<Self>

where Self: Sized,

Reads a copy of Self from the suffix of bytes.

impl FromZeroes for VhostUserShmemMapMsg

where VhostUserShmemMapMsgFlags: FromZeroes, u8: FromZeroes, [u8; 6]: FromZeroes, u64: FromZeroes,

fn zero(&mut self)

Overwrites self with zeroes.

fn new_zeroed() -> Self

where Self: Sized,

Creates an instance of Self from zeroed bytes.

impl VhostUserMsgValidator for VhostUserShmemMapMsg

fn is_valid(&self) -> bool

Validate message syntax only. It doesn’t validate message semantics such as protocol version number and dependency on feature flags etc.

impl Copy for VhostUserShmemMapMsg