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1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * runlevel Prints out the previous and the current runlevel.
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4 | *
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5 | * Version: @(#)runlevel 1.20 16-Apr-1997 MvS
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6 | *
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7 | * This file is part of the sysvinit suite,
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8 | * Copyright 1991-1997 Miquel van Smoorenburg.
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9 | *
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10 | * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
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11 | *
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12 | * initially busyboxified by Bernhard Fischer
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13 | */
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14 |
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15 | #include <utmp.h>
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16 | #include "libbb.h"
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17 |
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18 | int runlevel_main(int argc, char **argv);
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19 | int runlevel_main(int argc, char **argv)
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20 | {
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21 | struct utmp *ut;
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22 | char prev;
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23 |
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24 | if (argc > 1) utmpname(argv[1]);
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25 |
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26 | setutent();
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27 | while ((ut = getutent()) != NULL) {
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28 | if (ut->ut_type == RUN_LVL) {
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29 | prev = ut->ut_pid / 256;
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30 | if (prev == 0) prev = 'N';
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31 | printf("%c %c\n", prev, ut->ut_pid % 256);
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32 | if (ENABLE_FEATURE_CLEAN_UP)
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33 | endutent();
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34 | return 0;
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35 | }
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36 | }
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37 |
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38 | puts("unknown");
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39 |
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40 | if (ENABLE_FEATURE_CLEAN_UP)
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41 | endutent();
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42 | return 1;
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43 | }
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