LXR linux-old/include/linux/reboot.h

   1#ifndef _LINUX_REBOOT_H
   2#define _LINUX_REBOOT_H
   3
   4/*
   5 * Magic values required to use _reboot() system call.
   6 */
   7
   8#define LINUX_REBOOT_MAGIC1     0xfee1dead
   9#define LINUX_REBOOT_MAGIC2     672274793
  10#define LINUX_REBOOT_MAGIC2A    85072278
  11#define LINUX_REBOOT_MAGIC2B    369367448
  12
  13
  14/*
  15 * Commands accepted by the _reboot() system call.
  16 *
  17 * RESTART     Restart system using default command and mode.
  18 * HALT        Stop OS and give system control to ROM monitor, if any.
  19 * CAD_ON      Ctrl-Alt-Del sequence causes RESTART command.
  20 * CAD_OFF     Ctrl-Alt-Del sequence sends SIGINT to init task.
  21 * POWER_OFF   Stop OS and remove all power from system, if possible.
  22 * RESTART2    Restart system using given command string.
  23 */
  24
  25#define LINUX_REBOOT_CMD_RESTART        0x01234567
  26#define LINUX_REBOOT_CMD_HALT           0xCDEF0123
  27#define LINUX_REBOOT_CMD_CAD_ON         0x89ABCDEF
  28#define LINUX_REBOOT_CMD_CAD_OFF        0x00000000
  29#define LINUX_REBOOT_CMD_POWER_OFF      0x4321FEDC
  30#define LINUX_REBOOT_CMD_RESTART2       0xA1B2C3D4
  31
  32
  33#ifdef __KERNEL__
  34
  35#include <linux/notifier.h>
  36
  37extern int register_reboot_notifier(struct notifier_block *);
  38extern int unregister_reboot_notifier(struct notifier_block *);
  39
  40
  41/*
  42 * Architecture-specific implementations of sys_reboot commands.
  43 */
  44
  45extern void machine_restart(char *cmd);
  46extern void machine_halt(void);
  47extern void machine_power_off(void);
  48
  49#endif
  50
  51#endif /* _LINUX_REBOOT_H */
  52