login: introduce sd_session_get_tty()

3 files changed, 12 insertions, 0 deletions

diff --git a/src/login/libsystemd-login.sym b/src/login/libsystemd-login.sym
index ff51be729b..272b0e2b52 100644
--- a/src/login/libsystemd-login.sym
+++ b/src/login/libsystemd-login.sym
@@ -53,3 +53,8 @@ global:
         sd_seat_can_tty;
         sd_seat_can_graphical;
 } LIBSYSTEMD_LOGIN_43;
+
+LIBSYSTEMD_LOGIN_198 {
+global:
+        sd_session_get_tty;
+} LIBSYSTEMD_LOGIN_186;
diff --git a/src/login/sd-login.c b/src/login/sd-login.c
index 45e3bb8dcd..4bc51e71a2 100644
--- a/src/login/sd-login.c
+++ b/src/login/sd-login.c
@@ -409,6 +409,10 @@ _public_ int sd_session_get_seat(const char *session, char **seat) {
         return session_get_string(session, "SEAT", seat);
 }
 
+_public_ int sd_session_get_tty(const char *session, char **tty) {
+        return session_get_string(session, "TTY", tty);
+}
+
 _public_ int sd_session_get_service(const char *session, char **service) {
         return session_get_string(session, "SERVICE", service);
 }
diff --git a/src/systemd/sd-login.h b/src/systemd/sd-login.h
index 6bd1f2da4a..3746b45cf3 100644
--- a/src/systemd/sd-login.h
+++ b/src/systemd/sd-login.h
@@ -108,6 +108,9 @@ int sd_session_get_class(const char *session, char **clazz);
 /* Determine the X11 display of this session. */
 int sd_session_get_display(const char *session, char **display);
 
+/* Determine the TTY of this session. */
+int sd_session_get_tty(const char *session, char **display);
+
 /* Return active session and user of seat */
 int sd_seat_get_active(const char *seat, char **session, uid_t *uid);