mirror of git://git.suckless.org/sbase
62 lines
1.1 KiB
C
62 lines
1.1 KiB
C
/* See LICENSE file for copyright and license details. */
|
|
#include <sys/ioctl.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include "util.h"
|
|
|
|
#define KDGKBTYPE 0x4B33 /* get keyboard type */
|
|
|
|
#define VT_ACTIVATE 0x5606 /* make vt active */
|
|
#define VT_WAITACTIVE 0x5607 /* wait for vt active */
|
|
|
|
static char *vts[] = {
|
|
"/proc/self/fd/0",
|
|
"/dev/console",
|
|
"/dev/tty",
|
|
"/dev/tty0",
|
|
};
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
eprintf("usage: chvt N\n");
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
unsigned int n, i;
|
|
int fd;
|
|
char c;
|
|
|
|
if (argc != 2 || strspn(argv[1], "1234567890") != strlen(argv[1]))
|
|
usage();
|
|
|
|
n = estrtol(argv[1], 10);
|
|
for (i = 0; i < LEN(vts); i++) {
|
|
fd = open(vts[i], O_RDONLY);
|
|
if (fd < 0)
|
|
continue;
|
|
c = 0;
|
|
if (ioctl(fd, KDGKBTYPE, &c) == 0)
|
|
goto VTfound;
|
|
close(fd);
|
|
}
|
|
|
|
eprintf("couldn't find a console.\n");
|
|
VTfound:
|
|
if (ioctl(fd, VT_ACTIVATE, n) == -1)
|
|
eprintf("VT_ACTIVATE %d:", n);
|
|
if (ioctl(fd, VT_WAITACTIVE, n) == -1)
|
|
eprintf("VT_WAITACTIVE %d:", n);
|
|
close(fd);
|
|
|
|
return 0;
|
|
}
|