summaryrefslogtreecommitdiffhomepage
path: root/miscutils/runlevel.c
blob: df2da2b1f969ae6bffb5e3da55dddd48b1a72f10 (plain)
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
/* vi: set sw=4 ts=4: */
/*
 * runlevel	Prints out the previous and the current runlevel.
 *
 * Version:	@(#)runlevel  1.20  16-Apr-1997  MvS
 *
 *		This file is part of the sysvinit suite,
 *		Copyright 1991-1997 Miquel van Smoorenburg.
 *
 * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
 *
 * initially busyboxified by Bernhard Fischer
 */

#include "busybox.h"
#include <stdio.h>
#include <utmp.h>
#include <time.h>
#include <stdlib.h>

int runlevel_main(int argc, char **argv);
int runlevel_main(int argc, char **argv)
{
	struct utmp *ut;
	char prev;

	if (argc > 1) utmpname(argv[1]);

	setutent();
	while ((ut = getutent()) != NULL) {
		if (ut->ut_type == RUN_LVL) {
			prev = ut->ut_pid / 256;
			if (prev == 0) prev = 'N';
			printf("%c %c\n", prev, ut->ut_pid % 256);
			endutent();
			return 0;
		}
	}

	puts("unknown");
	endutent();
	return 1;
}