busybox/miscutils/runlevel.c

/* 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 Reutner-Fischer
 */
#include "libbb.h"
#include <utmp.h>

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

	if (argv[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);
			if (ENABLE_FEATURE_CLEAN_UP)
				endutent();
			return 0;
		}
	}

	puts("unknown");

	if (ENABLE_FEATURE_CLEAN_UP)
		endutent();
	return 1;
}
1	/* vi: set sw=4 ts=4: */
2	/*
3	* runlevel Prints out the previous and the current runlevel.
4	*
5	* Version: @(#)runlevel 1.20 16-Apr-1997 MvS
6	*
7	* This file is part of the sysvinit suite,
8	* Copyright 1991-1997 Miquel van Smoorenburg.
9	*
10	* Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
11	*
12	* initially busyboxified by Bernhard Reutner-Fischer
13	*/
14	#include "libbb.h"
15	#include <utmp.h>
16
17	int runlevel_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
18	int runlevel_main(int argc UNUSED_PARAM, char **argv)
19	{
20	struct utmp *ut;
21	char prev;
22
23	if (argv[1]) utmpname(argv[1]);
24
25	setutent();
26	while ((ut = getutent()) != NULL) {
27	if (ut->ut_type == RUN_LVL) {
28	prev = ut->ut_pid / 256;
29	if (prev == 0) prev = 'N';
30	printf("%c %c\n", prev, ut->ut_pid % 256);
31	if (ENABLE_FEATURE_CLEAN_UP)
32	endutent();
33	return 0;
34	}
35	}
36
37	puts("unknown");
38
39	if (ENABLE_FEATURE_CLEAN_UP)
40	endutent();
41	return 1;
42	}