X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Flogin%2Flogind-seat.c;h=4a4d40adca770c076525f6db31dc58d223eaa812;hb=6c605695506cc55fd77241308540c5e1a15d807c;hp=c5350fbf53366c2bd988212a2b2ab5ec68f0f387;hpb=20e1bd9d1b289761a1b0010d778bdaf924f317b3;p=elogind.git

diff --git a/src/login/logind-seat.c b/src/login/logind-seat.c
index c5350fbf5..4a4d40adc 100644
--- a/src/login/logind-seat.c
+++ b/src/login/logind-seat.c
@@ -201,7 +201,7 @@ int seat_preallocate_vts(Seat *s) {
         if (s->manager->n_autovts <= 0)
                 return 0;
 
-        if (!seat_can_multi_session(s))
+        if (!seat_has_vts(s))
                 return 0;
 
         for (i = 1; i <= s->manager->n_autovts; i++) {
@@ -246,10 +246,15 @@ int seat_set_active(Seat *s, Session *session) {
         old_active = s->active;
         s->active = session;
 
+        if (old_active)
+                session_device_pause_all(old_active);
+
         seat_apply_acls(s, old_active);
 
-        if (session && session->started)
+        if (session && session->started) {
                 session_send_changed(session, "Active\0");
+                session_device_resume_all(session);
+        }
 
         if (!session || session->started)
                 seat_send_changed(s, "ActiveSession\0");
@@ -277,7 +282,7 @@ int seat_active_vt_changed(Seat *s, int vtnr) {
         assert(s);
         assert(vtnr >= 1);
 
-        if (!seat_can_multi_session(s))
+        if (!seat_has_vts(s))
                 return -EINVAL;
 
         log_debug("VT changed to %i", vtnr);
@@ -301,7 +306,7 @@ int seat_read_active_vt(Seat *s) {
 
         assert(s);
 
-        if (!seat_can_multi_session(s))
+        if (!seat_has_vts(s))
                 return 0;
 
         lseek(s->manager->console_active_fd, SEEK_SET, 0);
@@ -412,18 +417,35 @@ int seat_attach_session(Seat *s, Session *session) {
 
         seat_send_changed(s, "Sessions\0");
 
-        /* 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))
+        /* On seats with VTs, the VT logic defines which session is active. On
+         * seats without VTs, we automatically activate the first session. */
+        if (!seat_has_vts(s) && !s->active)
                 seat_set_active(s, session);
 
         return 0;
 }
 
+void seat_complete_switch(Seat *s) {
+        Session *session;
+
+        assert(s);
+
+        /* if no session-switch is pending or if it got canceled, do nothing */
+        if (!s->pending_switch)
+                return;
+
+        session = s->pending_switch;
+        s->pending_switch = NULL;
+
+        seat_set_active(s, session);
+}
+
+bool seat_has_vts(Seat *s) {
+        assert(s);
+
+        return seat_is_seat0(s) && s->manager->console_active_fd >= 0;
+}
+
 bool seat_is_seat0(Seat *s) {
         assert(s);
 
@@ -433,19 +455,13 @@ bool seat_is_seat0(Seat *s) {
 bool seat_can_multi_session(Seat *s) {
         assert(s);
 
-        if (!seat_is_seat0(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;
+        return seat_has_vts(s);
 }
 
 bool seat_can_tty(Seat *s) {
         assert(s);
 
-        return seat_is_seat0(s) && s->manager->console_active_fd >= 0;
+        return seat_has_vts(s);
 }
 
 bool seat_has_master_device(Seat *s) {