busybox/init/reboot.h
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   1/*
   2 * Definitions related to the reboot() system call,
   3 * shared between init.c and halt.c.
   4 */
   5
   6#include <sys/reboot.h>
   7
   8#ifndef RB_HALT_SYSTEM
   9# if defined(__linux__)
  10#  define RB_HALT_SYSTEM  0xcdef0123
  11#  define RB_ENABLE_CAD   0x89abcdef
  12#  define RB_DISABLE_CAD  0
  13#  define RB_POWER_OFF    0x4321fedc
  14#  define RB_AUTOBOOT     0x01234567
  15# elif defined(RB_HALT)
  16#  define RB_HALT_SYSTEM  RB_HALT
  17# endif
  18#endif
  19
  20/* Stop system and switch power off if possible.  */
  21#ifndef RB_POWER_OFF
  22# if defined(RB_POWERDOWN)
  23#  define RB_POWER_OFF  RB_POWERDOWN
  24# elif defined(__linux__)
  25#  define RB_POWER_OFF  0x4321fedc
  26# else
  27#  warning "poweroff unsupported, using halt as fallback"
  28#  define RB_POWER_OFF  RB_HALT_SYSTEM
  29# endif
  30#endif
  31