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1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * setconsole.c - redirect system console output
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4 | *
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5 | * Copyright (C) 2004,2005 Enrik Berkhan <Enrik.Berkhan@inka.de>
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6 | *
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7 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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8 | */
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9 |
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10 | #include <getopt.h>
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11 | #include "libbb.h"
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12 |
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13 | #if ENABLE_FEATURE_SETCONSOLE_LONG_OPTIONS
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14 | static const char setconsole_longopts[] ALIGN1 =
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15 | "reset\0" No_argument "r"
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16 | ;
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17 | #endif
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18 |
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19 | #define OPT_SETCONS_RESET 1
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20 |
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21 | int setconsole_main(int argc, char **argv);
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22 | int setconsole_main(int argc, char **argv)
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23 | {
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24 | unsigned long flags;
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25 | const char *device = CURRENT_TTY;
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26 |
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27 | #if ENABLE_FEATURE_SETCONSOLE_LONG_OPTIONS
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28 | applet_long_options = setconsole_longopts;
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29 | #endif
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30 | flags = getopt32(argv, "r");
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31 |
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32 | if (argc - optind > 1)
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33 | bb_show_usage();
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34 |
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35 | if (argc - optind == 1) {
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36 | if (flags & OPT_SETCONS_RESET)
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37 | bb_show_usage();
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38 | device = argv[optind];
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39 | } else {
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40 | if (flags & OPT_SETCONS_RESET)
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41 | device = DEV_CONSOLE;
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42 | }
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43 |
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44 | xioctl(xopen(device, O_RDONLY), TIOCCONS, NULL);
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45 | return EXIT_SUCCESS;
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46 | }
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