(Maybe) better console subsystem

include/sys/char/input.h

@@ -1,8 +1,8 @@
 #pragma once
 #include "sys/types.h"
 
-struct chrdev;
-extern struct chrdev *g_keyboard_tty;
+struct console;
+extern struct console *g_keyboard_console;
 
 #define INPUT_MOD_CONTROL   (1 << 0)
 #define INPUT_MOD_SHIFT     (1 << 1)

include/sys/char/tty.h

@@ -1,14 +1,19 @@
 #pragma once
 #include "sys/types.h"
+#include "sys/list.h"
 
 struct chrdev;
+struct console;
+struct console_buffer;
 
 struct tty_data {
     // Process group ID of the foreground group (session leader)
     pid_t fg_pgid;
-    // Output device info
-    void *out_dev;
-    int (*out_putc) (void *dev, char c);
+    // Console to which the TTY is attached
+    struct console *master;
+    struct console_buffer *buffer;
+    // List link of TTYs which share the same console
+    struct list_head list;
 };
 
 // From keyboard handlers and stuff
@@ -19,4 +24,6 @@ void tty_data_write(struct chrdev *n, char c);
 void tty_puts(struct chrdev *n, const char *s);
 void tty_putc(struct chrdev *n, char c);
 
+int tty_create(struct console *con);
+
 void tty_init(void);