/* vi: set sw=4 ts=4: */ /* * Poweroff reboot and halt, oh my. * * Copyright 2006 by Rob Landley <rob@landley.net> * * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. */ #include "busybox.h" #include <signal.h> #include <sys/reboot.h> #include <unistd.h> int halt_main(int argc, char *argv[]) { static const int magic[] = { #ifdef RB_HALT_SYSTEM RB_HALT_SYSTEM, #elif defined RB_HALT RB_HALT, #endif #ifdef RB_POWER_OFF RB_POWER_OFF, #elif defined RB_POWERDOWN RB_POWERDOWN, #endif RB_AUTOBOOT }; static const int signals[] = {SIGUSR1, SIGUSR2, SIGTERM}; char *delay = "hpr"; int which, flags, rc = 1; /* Figure out which applet we're running */ for(which=0;delay[which]!=*bb_applet_name;which++); /* Parse and handle arguments */ flags = bb_getopt_ulflags(argc, argv, "d:nf", &delay); if (flags&1) sleep(atoi(delay)); if (!(flags&2)) sync(); /* Perform action. */ if (ENABLE_INIT && !(flags & 4)) { if (ENABLE_FEATURE_INITRD) { long *pidlist=find_pid_by_name("linuxrc"); if (*pidlist>0) rc = kill(*pidlist,signals[which]); if (ENABLE_FEATURE_CLEAN_UP) free(pidlist); } if (rc) rc = kill(1,signals[which]); } else rc = reboot(magic[which]); if (rc) bb_error_msg("No."); return rc; }