RockOS/programs/vga_text_term/main.c

#include "syscall.h"
#include <unistd.h>

#include <sys/video.h>

#define VGA_TEXT_W 80
#define VGA_TEXT_H 25

void term();

int ptys;
int ptym;

fb_info_t fb_info;
void* framebuffer_address;

int terminal_col = 0;
int terminal_row = 0;

void term_write_char(char c) {

}

int main(int argc, char *argv[]) {
    (void)argc;
    (void)argv;

    ptym = pty(&ptys);

    if (fork() == 0) {
        close(ptym);
        dup2(ptys, 0);
        dup2(0, 1);
        dup2(0, 2);

        exec("/bin/rocksh.elf");  
    }

    close(ptys);
    dup2(ptym, 0);
    dup2(0, 1);
    dup2(0, 2);

    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;
    }

    framebuffer_address = mmap(vga_fd);



    return 0;
}