pty: initial implementation

kernel-src/include/kernel/pty.h

@@ -0,0 +1,21 @@
+#ifndef _PTY_H
+#define _PTY_H
+
+#include <kernel/tty.h>
+#include <spinlock.h>
+#include <ringbuffer.h>
+#include <kernel/poll.h>
+
+typedef struct {
+	bool hangup;
+	tty_t *tty;
+	int minor;
+	vnode_t *mastervnode;
+	ringbuffer_t ringbuffer;
+	pollheader_t pollheader;
+	spinlock_t lock;
+} pty_t;
+
+void pty_init();
+
+#endif

kernel-src/include/kernel/tty.h

@@ -10,7 +10,8 @@
 #define DEVICE_BUFFER_SIZE 512
 #define READ_BUFFER_SIZE 4096
 
-typedef void (*ttydevicewritefn_t)(char *str, size_t size);
+typedef size_t (*ttydevicewritefn_t)(void *internal, char *str, size_t size);
+typedef void (*ttyinactivefn_t)(void *internal);
 
 typedef struct {
 	pollheader_t pollheader;
@@ -19,17 +20,19 @@ typedef struct {
 	mutex_t readmutex;
 	mutex_t writemutex;
 	termios_t termios;
+	void *deviceinternal;
 	char *devicebuffer;
 	int devicepos;
 	ttydevicewritefn_t writetodevice;
+	ttyinactivefn_t inactivedevice;
 	int minor;
 	winsize_t winsize;
 	vnode_t *mastervnode;
 } tty_t;
 
 void tty_init();
-tty_t *tty_create(char *name, ttydevicewritefn_t fn);
-void tty_destroy(char *name, tty_t *tty);
+tty_t *tty_create(char *name, ttydevicewritefn_t writefn, ttyinactivefn_t inactivefn, void *internal);
 void tty_process(tty_t *tty, char c);
+void tty_unregister(tty_t *tty);
 
 #endif