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#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <sys/ioctl.h>
#include <sys/kd.h>
#include <stdlib.h>
#include <unistd.h>
void die(char * mess) {
perror(mess);
exit(1);
}
#define MAXFONTSIZE 65536
int main(void) {
unsigned char buf[MAXFONTSIZE];
struct console_font_op cfo;
unsigned short map[E_TABSZ];
struct unipair descs[2048];
struct unimapdesc d;
int fd, i;
if ((fd = open("/dev/tty0", O_RDONLY)) < 0)
die("open");
cfo.op = KD_FONT_OP_GET;
cfo.flags = 0;
cfo.width = 8;
cfo.height = 16;
cfo.charcount = 512;
cfo.data = buf;
if (ioctl(fd, KDFONTOP, &cfo))
die("KDFONTOP KD_FONT_OP_GET");
if (ioctl(fd, GIO_UNISCRNMAP, map))
die("GIO_UNISCRNMAP");
d.entry_ct = 2048;
d.entries = descs;
if (ioctl(fd, GIO_UNIMAP, &d))
die("GIO_UNIMAP");
i = write(1, &cfo, sizeof(cfo));
i = write(1, buf, sizeof(buf));
i = write(1, map, sizeof(map));
i = write(1, &d.entry_ct, sizeof(d.entry_ct));
i = write(1, descs, d.entry_ct * sizeof(descs[0]));
return 0;
}
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