tty: implement read/write support

kernel/tty/device.c

@@ -2,6 +2,11 @@
 #include <socks/device.h>
 #include <socks/libc/stdio.h>
 
+static struct char_device_ops tty_ops = {
+	.read = tty_read,
+	.write = tty_write,
+};
+
 struct device *tty_device_create(void)
 {
 	struct char_device *cdev = char_device_create();
@@ -15,7 +20,9 @@ struct device *tty_device_create(void)
 		return NULL;
 	}
 
+	cdev->c_ops = &tty_ops;
 	cdev->c_tty = tty_dev;
+
 	return char_device_base(cdev);
 }