| 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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