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#include <stdio.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/sysmacros.h>
int main(int argc, char **argv)
{
unsigned char twelve = 12;
char *type;
int maj, min, ret = 0, fg = -1;
struct stat sb;
fstat(0, &sb);
maj = major(sb.st_rdev);
min = minor(sb.st_rdev);
if (maj != 3 && (maj < 136 || maj > 143)) {
if ((fg = ioctl (0, TIOCLINUX, &twelve)) < 0) {
type = "serial";
ret = 1;
} else {
type = "vt";
ret = 0;
}
} else {
type = "pty";
ret = 2;
}
if (argc > 1 && !strcmp(argv[1],"fg")) {
if (fg < 0 || fg != (min-1))
return 1;
return 0;
} else {
printf("%s\n",type);
return ret;
}
}
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