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
  37 extern struct notifier_block *reboot_notifier_list;
  38 extern int register_reboot_notifier(struct notifier_block *);
  39 extern int unregister_reboot_notifier(struct notifier_block *);
  40
  41
  42 /*
  43  * Architecture-specific implementations of sys_reboot commands.
  44  */
  45
  46 extern void machine_restart(char *cmd);
  47 extern void machine_halt(void);
  48 extern void machine_power_off(void);
  49
  50 #endif
  51
  52 #endif /* _LINUX_REBOOT_H */