Struct SessionManager 

pub struct SessionManager { /* private fields */ }

Manages all active sessions.

Implementations

impl SessionManager

pub const fn new() -> Self

Create a new, empty session manager.

pub fn create_session( &mut self, user_id: u64, username: &str, vt: u8, ) -> Result<SessionId, KernelError>

Create a new session for a user.

Assigns the next available virtual terminal starting at VT_BASE. Returns Err if the maximum number of sessions is reached.

pub fn destroy_session(&mut self, id: SessionId)

Destroy a session and remove it from tracking.

pub fn get_session(&self, id: SessionId) -> Option<&Session>

Get a reference to a session by ID.

pub fn get_session_mut(&mut self, id: SessionId) -> Option<&mut Session>

Get a mutable reference to a session by ID.

pub fn get_active_session(&self) -> Option<SessionId>

Return the currently active (foreground) session ID.

pub fn switch_session(&mut self, id: SessionId)

Switch to a different session.

The previously active session is moved to Background; the new session becomes Active.

pub fn lock_session(&mut self, id: SessionId)

Lock a session (requires re-authentication to resume).

pub fn unlock_session(&mut self, id: SessionId)

Unlock a previously locked session, returning it to Active.

pub fn add_process(&mut self, session_id: SessionId, pid: ProcessId)

Add a process to a session.

pub fn remove_process(&mut self, session_id: SessionId, pid: ProcessId)

Remove a process from a session.

pub fn get_session_for_vt(&self, vt: u8) -> Option<SessionId>

Find the session assigned to a given VT number.

pub fn list_sessions(&self) -> Vec<SessionId>

Return a list of all session IDs.

pub fn session_count(&self) -> usize

Number of active sessions.

pub fn can_signal(&self, source_pid: u64, target_pid: u64) -> bool

Check whether a process in one session may signal a process in another.

Session isolation: cross-session signaling is denied unless the source process belongs to the same session as the target.

pub fn begin_logout(&mut self, id: SessionId)

Begin logout for a session: set state to LoggingOut.

pub fn get_session_processes(&self, id: SessionId) -> Vec<u64>

Get all process IDs belonging to a session (for cleanup on logout).

Trait Implementations

impl Default for SessionManager

Available on crate feature alloc only.

fn default() -> Self

Returns the “default value” for a type.