Last change
on this file since 3858 was 3232, checked in by Bruno Cornec, 11 years ago |
- Update mindi-busybox to 1.21.1
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File size:
1.3 KB
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1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * 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 GPLv2 or later, see file LICENSE in this source tree.
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11 | *
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12 | * initially busyboxified by Bernhard Reutner-Fischer
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13 | */
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14 |
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15 | //usage:#define runlevel_trivial_usage
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16 | //usage: "[FILE]"
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17 | //usage:#define runlevel_full_usage "\n\n"
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18 | //usage: "Find the current and previous system runlevel\n"
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19 | //usage: "\n"
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20 | //usage: "If no utmp FILE exists or if no runlevel record can be found,\n"
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21 | //usage: "print \"unknown\""
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22 | //usage:
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23 | //usage:#define runlevel_example_usage
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24 | //usage: "$ runlevel /var/run/utmp\n"
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25 | //usage: "N 2"
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26 |
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27 | #include "libbb.h"
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28 |
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29 | int runlevel_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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30 | int runlevel_main(int argc UNUSED_PARAM, char **argv)
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31 | {
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32 | struct utmp *ut;
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33 | char prev;
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34 |
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35 | if (argv[1]) utmpname(argv[1]);
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36 |
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37 | setutent();
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38 | while ((ut = getutent()) != NULL) {
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39 | if (ut->ut_type == RUN_LVL) {
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40 | prev = ut->ut_pid / 256;
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41 | if (prev == 0) prev = 'N';
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42 | printf("%c %c\n", prev, ut->ut_pid % 256);
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43 | if (ENABLE_FEATURE_CLEAN_UP)
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44 | endutent();
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45 | return 0;
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46 | }
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47 | }
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48 |
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49 | puts("unknown");
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50 |
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51 | if (ENABLE_FEATURE_CLEAN_UP)
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52 | endutent();
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53 | return 1;
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54 | }
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