feat(kernel): Add eBPF Virtual Machine & Verifier, VMA Memory Mapper, Sysfs KObject Tree, Unix98 PTY, and 2D Canvas Graphics Engine

include/drivers/canvas.h

@@ -0,0 +1,32 @@
+#ifndef _DRIVERS_CANVAS_H
+#define _DRIVERS_CANVAS_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+
+#define COLOR_BLACK       0x00000000
+#define COLOR_WHITE       0x00FFFFFF
+#define COLOR_RED         0x00FF4444
+#define COLOR_GREEN       0x0044FF44
+#define COLOR_BLUE        0x004488FF
+#define COLOR_YELLOW      0x00FFDD44
+#define COLOR_CYAN        0x0044DDFF
+#define COLOR_DARK_GRAY   0x00222222
+#define COLOR_LIGHT_GRAY  0x00CCCCCC
+#define COLOR_NAVY        0x001B2A4A
+#define COLOR_TITLE_BAR   0x002D3748
+#define COLOR_ACCENT      0x003182CE
+
+void canvas_init(void);
+void canvas_clear(uint32_t color);
+void canvas_draw_pixel(int x, int y, uint32_t color);
+void canvas_draw_line(int x0, int y0, int x1, int y1, uint32_t color);
+void canvas_draw_rect(int x, int y, int w, int h, uint32_t color, bool filled);
+void canvas_draw_circle(int cx, int cy, int r, uint32_t color, bool filled);
+void canvas_draw_char(int x, int y, char c, uint32_t color, uint32_t bg_color);
+void canvas_draw_string(int x, int y, const char* str, uint32_t color, uint32_t bg_color);
+void canvas_render_desktop_mockup(void);
+void canvas_present(void);
+
+#endif // _DRIVERS_CANVAS_H

include/drivers/pty.h

@@ -0,0 +1,39 @@
+#ifndef _DRIVERS_PTY_H
+#define _DRIVERS_PTY_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+
+#define PTY_MAX_PAIRS 8
+#define PTY_BUFFER_SZ 1024
+
+typedef struct {
+    uint32_t pty_num;
+    char     master_name[16]; // /dev/ptmx
+    char     slave_name[16];  // /dev/pts/0
+    char     m2s_buf[PTY_BUFFER_SZ];
+    size_t   m2s_head;
+    size_t   m2s_tail;
+    char     s2m_buf[PTY_BUFFER_SZ];
+    size_t   s2m_head;
+    size_t   s2m_tail;
+    bool     echo_enabled;
+    bool     raw_mode;
+    bool     master_open;
+    bool     slave_open;
+    bool     in_use;
+} pty_pair_t;
+
+void pty_init(void);
+int  pty_open_master(void);
+int  pty_open_slave(int master_fd);
+int  pty_master_write(int master_fd, const char* data, size_t len);
+int  pty_master_read(int master_fd, char* data, size_t max_len);
+int  pty_slave_write(int slave_fd, const char* data, size_t len);
+int  pty_slave_read(int slave_fd, char* data, size_t max_len);
+
+size_t pty_get_active_count(void);
+const pty_pair_t* pty_get_pair(size_t index);
+
+#endif // _DRIVERS_PTY_H