fprintf(f,
"# This is private data. Do not parse.\n"
- "IS_VTCONSOLE=%i\n",
- seat_is_vtconsole(s));
+ "IS_VTCONSOLE=%i\n"
+ "CAN_MULTI_SESSION=%i\n",
+ seat_is_vtconsole(s),
+ seat_can_multi_session(s));
if (s->active) {
assert(s->active->user);
if (s->manager->n_autovts <= 0)
return 0;
- if (!seat_is_vtconsole(s))
+ if (!seat_can_multi_session(s))
return 0;
for (i = 1; i <= s->manager->n_autovts; i++) {
assert(s);
assert(vtnr >= 1);
- if (!seat_is_vtconsole(s))
+ if (!seat_can_multi_session(s))
return -EINVAL;
log_debug("VT changed to %i", vtnr);
assert(s);
- if (!seat_is_vtconsole(s))
+ if (!seat_can_multi_session(s))
return 0;
lseek(s->manager->console_active_fd, SEEK_SET, 0);
assert(session);
assert(!session->seat);
- if (!seat_is_vtconsole(s) && s->sessions)
- return -EEXIST;
-
session->seat = s;
LIST_PREPEND(Session, sessions_by_seat, s->sessions, session);
seat_send_changed(s, "Sessions\0");
- if (!seat_is_vtconsole(s)) {
- assert(!s->active);
+ /* Note that even if a seat is not multi-session capable it
+ * still might have multiple sessions on it since old, dead
+ * sessions might continue to be tracked until all their
+ * processes are gone. The most recently added session
+ * (i.e. the first in s->sessions) is the one that matters. */
+
+ if (!seat_can_multi_session(s))
seat_set_active(s, session);
- }
return 0;
}
return s->manager->vtconsole == s;
}
+bool seat_can_multi_session(Seat *s) {
+ assert(s);
+
+ if (!seat_is_vtconsole(s))
+ return false;
+
+ /* If we can't watch which VT is in the foreground, we don't
+ * support VT switching */
+
+ return s->manager->console_active_fd >= 0;
+}
+
int seat_get_idle_hint(Seat *s, dual_timestamp *t) {
Session *session;
bool idle_hint = true;