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 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 "busybox.h"
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11 | #include <signal.h>
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12 | #include <sys/reboot.h>
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13 | #include <unistd.h>
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14 |
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15 | int halt_main(int argc, char *argv[])
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16 | {
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17 | static const int magic[] = {
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18 | #ifdef RB_HALT_SYSTEM
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19 | RB_HALT_SYSTEM,
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20 | #elif defined RB_HALT
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21 | RB_HALT,
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22 | #endif
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23 | #ifdef RB_POWER_OFF
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24 | RB_POWER_OFF,
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25 | #elif defined RB_POWERDOWN
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26 | RB_POWERDOWN,
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27 | #endif
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28 | RB_AUTOBOOT
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29 | };
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30 | static const int signals[] = {SIGUSR1, SIGUSR2, SIGTERM};
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31 |
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32 | char *delay = "hpr";
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33 | int which, flags, rc = 1;
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34 |
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35 | /* Figure out which applet we're running */
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36 | for(which=0;delay[which]!=*bb_applet_name;which++);
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37 |
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38 | /* Parse and handle arguments */
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39 | flags = bb_getopt_ulflags(argc, argv, "d:nf", &delay);
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40 | if (flags&1) sleep(atoi(delay));
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41 | if (!(flags&2)) sync();
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42 |
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43 | /* Perform action. */
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44 | if (ENABLE_INIT && !(flags & 4)) {
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45 | if (ENABLE_FEATURE_INITRD) {
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46 | long *pidlist=find_pid_by_name("linuxrc");
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47 | if (*pidlist>0) rc = kill(*pidlist,signals[which]);
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48 | if (ENABLE_FEATURE_CLEAN_UP) free(pidlist);
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49 | }
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50 | if (rc) rc = kill(1,signals[which]);
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51 | } else rc = reboot(magic[which]);
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52 |
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53 | if (rc) bb_error_msg("No.");
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54 | return rc;
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55 | }
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