Struct UffdList

pub struct UffdList<'a, T: Token, D: DeadUffdChecker> {
    list: Vec<Userfaultfd>,
    dead_uffd_checker: &'a D,
    wait_ctx: &'a WaitContext<T>,
    num_static_uffd: Option<usize>,
}

The list of Userfaultfd.

Fields

list: Vec<Userfaultfd>

dead_uffd_checker: &'a D

wait_ctx: &'a WaitContext<T>

num_static_uffd: Option<usize>

Implementations

impl<'a, T: Token, D: DeadUffdChecker> UffdList<'a, T, D>

const ID_MAIN_UFFD: u32 = 0u32

pub fn new( main_uffd: Userfaultfd, dead_uffd_checker: &'a D, wait_ctx: &'a WaitContext<T>, ) -> Result<Self>

Creates UffdList.

The Userfaultfd for the main process is required.

pub fn set_num_static_devices(&mut self, num_static_devices: u32) -> bool

Set the count of static devices.

Devices attached after guest booting are treated as dynamic device which can be detached (e.g. hotplug devices)

pub fn register(&mut self, uffd: Userfaultfd) -> Result<bool>

Registers a new Userfaultfd to this list and [WaitContext].

pub fn gc_dead_uffds(&mut self) -> Result<()>

Remove all dead Userfaultfd in the list.

pub fn get(&self, id: u32) -> Option<&Userfaultfd>

Returns the reference of Userfaultfd if exists.

pub fn main_uffd(&self) -> &Userfaultfd

Returns the reference of the Userfaultfd of the main process.

pub fn clone_main_uffd(&self) -> Result<Userfaultfd>

Returns cloned Userfaultfd of the main process.

pub fn get_list(&self) -> &[Userfaultfd]

Returns the all Userfaultfd registered.