KDBUS_CMD_HELLO   747 src/libsystemd/sd-bus/bus-kernel.c         r = ioctl(b->input_fd, KDBUS_CMD_HELLO, hello);
KDBUS_CMD_HELLO  1567 src/libsystemd/sd-bus/bus-kernel.c         if (ioctl(fd, KDBUS_CMD_HELLO, hello) < 0)