/* vi: set sw=4 ts=4: */
/*
- * runlevel Prints out the previous and the current runlevel.
+ * Prints out the previous and the current runlevel.
*
- * Version: @(#)runlevel 1.20 16-Apr-1997 MvS
+ * Version: @(#)runlevel 1.20 16-Apr-1997 MvS
*
- * This file is part of the sysvinit suite,
- * Copyright 1991-1997 Miquel van Smoorenburg.
+ * 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.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*
- * initially busyboxified by Bernhard Fischer
+ * initially busyboxified by Bernhard Reutner-Fischer
*/
-#include <utmp.h>
+//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);
-int runlevel_main(int argc, char **argv)
+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 (argc > 1) utmpname(argv[1]);
+ if (argv[1]) utmpname(argv[1]);
setutent();
while ((ut = getutent()) != NULL) {