1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * Poweroff reboot and halt, oh my.
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4 | *
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5 | * Copyright 2006 by Rob Landley <rob@landley.net>
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6 | *
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7 | * Licensed under GPL version 2, see file LICENSE in this tarball for details.
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8 | */
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9 |
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10 | #include "libbb.h"
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11 | #include <sys/reboot.h>
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12 |
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13 | int halt_main(int argc, char **argv);
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14 | int halt_main(int argc, char **argv)
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15 | {
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16 | static const int magic[] = {
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17 | #ifdef RB_HALT_SYSTEM
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18 | RB_HALT_SYSTEM,
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19 | #elif defined RB_HALT
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20 | RB_HALT,
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21 | #endif
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22 | #ifdef RB_POWER_OFF
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23 | RB_POWER_OFF,
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24 | #elif defined RB_POWERDOWN
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25 | RB_POWERDOWN,
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26 | #endif
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27 | RB_AUTOBOOT
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28 | };
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29 | static const int signals[] = { SIGUSR1, SIGUSR2, SIGTERM };
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30 |
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31 | char *delay;
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32 | int which, flags, rc = 1;
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33 |
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34 | /* Figure out which applet we're running */
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35 | for (which = 0; "hpr"[which] != *applet_name; which++);
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36 |
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37 | /* Parse and handle arguments */
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38 | flags = getopt32(argv, "d:nf", &delay);
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39 | if (flags & 1) sleep(xatou(delay));
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40 | if (!(flags & 2)) sync();
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41 |
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42 | /* Perform action. */
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43 | if (ENABLE_INIT && !(flags & 4)) {
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44 | if (ENABLE_FEATURE_INITRD) {
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45 | pid_t *pidlist = find_pid_by_name("linuxrc");
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46 | if (pidlist[0] > 0)
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47 | rc = kill(pidlist[0], signals[which]);
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48 | if (ENABLE_FEATURE_CLEAN_UP)
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49 | free(pidlist);
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50 | }
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51 | if (rc)
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52 | rc = kill(1, signals[which]);
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53 | } else
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54 | rc = reboot(magic[which]);
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55 |
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56 | if (rc)
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57 | bb_error_msg("no");
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58 | return rc;
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59 | }
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