Added direct acces to video memory from userland.std_c_userland

Next : same for keyboard ; move VT handling to userland.
Consequence : a foreground app has total control over I/O.
Next : implement sockets & a userland console multiplexer.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/kernel/dev/vgatxt.h b/src/kernel/dev/vgatxt.h
index 550d4ba..bed743e 100644
--- a/src/kernel/dev/vgatxt.h
+++ b/src/kernel/dev/vgatxt.h
@@ -10,6 +10,13 @@ class vgatxt : public display {
 	vgatxt(node *parent);
 	virtual ~vgatxt() {}
 
+	// as a FS node
+	virtual size_t get_size();
+	virtual int read(size_t offset, size_t len, char *buffer);
+	virtual int write(size_t offset, size_t len, char *buffer);
+	virtual int dev_control(char *data);
+
+	// as a display
 	virtual int text_w();
 	virtual int text_h();
 	virtual void text_setcsr(int l, int c, bool visible);