build system refresh

programs/rockterm/main.c

@@ -0,0 +1,74 @@
+#include <unistd.h>
+
+#include <sys/video.h>
+
+typedef struct {
+
+} font_t;
+
+void term_write_char(char c);
+void render_char_at(char c, int x, int y);
+
+int spawn_shell();
+
+int ptys;
+int ptym;
+
+void* fb;
+fb_info_t fb_info;
+
+int terminal_col = 0;
+int terminal_row = 0;
+
+font_t* terminal_font = NULL;
+
+int main(int argc, char *argv[]) {
+    (void)argc;
+    (void)argv;
+
+    int vga_fd = open("/dev/vga");
+    if (vga_fd == -1) return 1;
+
+    int kbd_fd = open("/dev/kbd");
+    if (kbd_fd == -1) return 1;
+
+    int res = ioctl(vga_fd, FBIOGET_INFO, &fb_info);
+    if (!res) {
+        return 1;
+    }
+
+    mmap(vga_fd);
+
+    // if (!spawn_shell()) {
+    //     return 1;
+    // }
+
+    return 0;
+}
+
+void render_char_at(char c, int x, int y) {
+    if (!terminal_font) return;
+}
+
+void term_write_char(char c) {
+
+}
+
+int spawn_shell() {
+    ptym = pty(&ptys);
+
+    if (fork() == 0) {
+        close(ptym);
+        dup2(ptys, 0);
+        dup2(0, 1);
+        dup2(0, 2);
+
+        if (!exec("/usr/bin/rocksh")) return 0;
+    }
+
+    close(ptys);
+    dup2(ptym, 0);
+    dup2(0, 1);
+    dup2(0, 2);
+    return 1;
+}