40 lines
737 B
C
40 lines
737 B
C
/* See LICENSE file for copyright and license details. */
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "../util.h"
|
|
|
|
void
|
|
devtotty(int dev, int *tty_maj, int *tty_min)
|
|
{
|
|
*tty_maj = (dev >> 8) & 0xfff;
|
|
*tty_min = (dev & 0xff) | ((dev >> 12) & 0xfff00);
|
|
}
|
|
|
|
char *
|
|
ttytostr(int tty_maj, int tty_min)
|
|
{
|
|
const char *pts = "pts/";
|
|
const char *tty = "tty/";
|
|
char *ttystr;
|
|
size_t len;
|
|
|
|
/* Up to 10k ttys */
|
|
len = strlen(pts) + 4 + 1;
|
|
ttystr = malloc(len);
|
|
if (!ttystr)
|
|
eprintf("malloc:");
|
|
switch (tty_maj) {
|
|
case 136:
|
|
snprintf(ttystr, len, "%s%d", pts, tty_min);
|
|
break;
|
|
case 4:
|
|
snprintf(ttystr, len, "%s%d", tty, tty_min);
|
|
default:
|
|
ttystr[0] = '?';
|
|
ttystr[1] = '\0';
|
|
break;
|
|
}
|
|
return ttystr;
|
|
}
|