5bc8c005a8
Signed-off-by: Pere Orga <gotrunks@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* 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 GPLv2 or later, see file LICENSE in this source tree.
|
|
*
|
|
* initially busyboxified by Bernhard Reutner-Fischer
|
|
*/
|
|
|
|
//usage:#define runlevel_trivial_usage
|
|
//usage: "[FILE]"
|
|
//usage:#define runlevel_full_usage "\n\n"
|
|
//usage: "Find the current and previous system runlevel\n"
|
|
//usage: "\n"
|
|
//usage: "If no utmp FILE exists or if no runlevel record can be found,\n"
|
|
//usage: "print \"unknown\""
|
|
//usage:
|
|
//usage:#define runlevel_example_usage
|
|
//usage: "$ runlevel /var/run/utmp\n"
|
|
//usage: "N 2"
|
|
|
|
#include "libbb.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;
|
|
}
|