1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/vt.h>
#include <asm/vc_ioctl.h>
int die(char *str)
{
perror(str);
exit(EXIT_FAILURE);
}
int main(int ac, char **av)
{
struct vc_mode vc;
struct vt_consize vt;
if (ioctl(1, VC_GETMODE, &vc) < 0)
(void) die("VC_GETMODE");
if (ac < 2) {
(void) printf("%d %d\n", vc.mode, vc.depth);
exit(EXIT_SUCCESS);
}
vc.mode = atoi(av[1]);
if (ac > 2)
vc.depth = atoi(av[2]);
if (ioctl(1, VC_SETMODE, &vc) < 0)
(void) die("VC_SETMODE");
if (ioctl(1, VC_GETMODE, &vc) < 0)
(void) die("VC_GETMODE");
(void) memset(&vt, 0, sizeof(vt));
vt.v_vlin = (unsigned short int) vc.height;
vt.v_rows = (unsigned short int) (vc.height / 16);
vt.v_vcol = (unsigned short int) vc.width;
vt.v_cols = (unsigned short int) (vc.width / 8);
if (ioctl(1, VT_RESIZEX, &vt) < 0)
(void) die("VT_RESIZEX");
(void) printf("\033[H\033[J");
(void) fflush(stdout);
exit(EXIT_SUCCESS);
}
|
