task_session
tty->ctrl.session = get_pid(task_session(current));
session_clear_tty(task_session(current));
task_session(current) == tty->ctrl.session)
sid = task_session(p);
(real_tty->ctrl.session != task_session(current))) {
if (session_of_pgrp(pgrp) != task_session(current))
task_session(p->real_parent) == task_session(p))
task_session(parent) == task_session(tsk) &&
init_task_pid(p, PIDTYPE_SID, task_session(current));
sid = task_session(t);
if (!sid || sid == task_session(current))
if (task_session(p) != task_session(group_leader))
if (!g || task_session(g) != task_session(group_leader))
sid = task_session(current);
sid = task_session(p);
if (task_session(curr) != pid)