busybox/miscutils/runlevel.c
2008-09-25 12:13:34 +00:00

44 lines
924 B
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 <utmp.h>
#include "libbb.h"
int runlevel_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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);
if (ENABLE_FEATURE_CLEAN_UP)
endutent();
return 0;
}
}
puts("unknown");
if (ENABLE_FEATURE_CLEAN_UP)
endutent();
return 1;
}