Struct NetlinkState 

pub struct NetlinkState { /* private fields */ }

Per-sandbox registry of virtualized netlink cookie fds.

Keyed by (pid, fd) — the exact fd number allocated in the child when our socket(AF_NETLINK, ..., NETLINK_ROUTE) handler returned InjectFdSendTracked. Using the fd number directly (instead of comparing /proc/<pid>/fd/<fd> inodes against a set of injected inodes) avoids TOCTOU: once we record (pid, fd), no other thread can redirect that fd slot without our close handler observing it and removing the entry first.

Implementations

impl NetlinkState

pub fn new() -> Self

pub fn register(&self, pid: i32, fd: i32)

Register a new cookie fd injected into the child.

pub fn unregister(&self, pid: i32, fd: i32)

Remove a cookie entry. Called from the close handler when the child closes a tracked fd.

pub fn is_cookie(&self, pid: i32, fd: i32) -> bool

Is this (pid, fd) one of our injected netlink cookies?

Trait Implementations

impl Default for NetlinkState

fn default() -> NetlinkState

Returns the “default value” for a type.