seat_get_can      678 src/libsystemd/sd-login/sd-login.c         return seat_get_can(seat, "CAN_MULTI_SESSION");
seat_get_can      682 src/libsystemd/sd-login/sd-login.c         return seat_get_can(seat, "CAN_TTY");
seat_get_can      686 src/libsystemd/sd-login/sd-login.c         return seat_get_can(seat, "CAN_GRAPHICAL");