Bump to version 1.22.1

[platform/upstream/busybox.git] / miscutils / runlevel.c

diff --git a/miscutils/runlevel.c b/miscutils/runlevel.c
index 0aabfb0..76231df 100644 (file)
--- a/miscutils/runlevel.c
+++ b/miscutils/runlevel.c
@@ -1,27 +1,38 @@
 /* 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) {
@@ -36,7 +47,7 @@ int runlevel_main(int argc, char **argv)
        }
 
        puts("unknown");
-       
+
        if (ENABLE_FEATURE_CLEAN_UP)
                endutent();
        return 1;