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