include/linux/reboot.h

15997 #ifndef _LINUX_REBOOT_H
15998 #define _LINUX_REBOOT_H
15999 
16000 /* Magic values required to use _reboot() system call. */
16001 
16002 #define LINUX_REBOOT_MAGIC1     0xfee1dead
16003 #define LINUX_REBOOT_MAGIC2     672274793
16004 #define LINUX_REBOOT_MAGIC2A    85072278
16005 #define LINUX_REBOOT_MAGIC2B    369367448
16006 
16007 
16008 /* Commands accepted by the _reboot() system call.
16009  *
16010  * RESTART
16011         Restart system using default command and mode.
16012  * HALT
16013  *      Stop OS & give sys control to ROM mon, if any.
16014  * CAD_ON
16015  *      Ctrl-Alt-Del sequence causes RESTART command.
16016  * CAD_OFF
16017  *      Ctrl-Alt-Del sequence sends SIGINT to init task.
16018  * POWER_OFF
16019  *      Stop OS & remove all pwr from system, if poss.
16020  * RESTART2    Restart system using given command string.
16021  */
16022 
16023 #define LINUX_REBOOT_CMD_RESTART        0x01234567
16024 #define LINUX_REBOOT_CMD_HALT           0xCDEF0123
16025 #define LINUX_REBOOT_CMD_CAD_ON         0x89ABCDEF
16026 #define LINUX_REBOOT_CMD_CAD_OFF        0x00000000
16027 #define LINUX_REBOOT_CMD_POWER_OFF      0x4321FEDC
16028 #define LINUX_REBOOT_CMD_RESTART2       0xA1B2C3D4
16029 
16030 
16031 #ifdef __KERNEL__
16032 
16033 #include <linux/notifier.h>
16034 
16035 extern struct notifier_block *reboot_notifier_list;
16036 extern int register_reboot_notifier(
16037   struct notifier_block *);
16038 extern int unregister_reboot_notifier(
16039   struct notifier_block *);
16040 
16041 
16042 /* Architecture-specific implementations of sys_reboot
16043  * commands.  */
16044 extern void machine_restart(char *cmd);
16045 extern void machine_halt(void);
16046 extern void machine_power_off(void);
16047 
16048 #endif
16049 
16050 #endif /* _LINUX_REBOOT_H */