1 #ifndef _LINUX_REBOOT_H
2 #define _LINUX_REBOOT_H
5 * Magic values required to use _reboot() system call.
8 #define LINUX_REBOOT_MAGIC1 0xfee1dead
9 #define LINUX_REBOOT_MAGIC2 672274793
10 #define LINUX_REBOOT_MAGIC2A 85072278
11 #define LINUX_REBOOT_MAGIC2B 369367448
15 * Commands accepted by the _reboot() system call.
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.
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
32 /* Including <unistd.h> makes sure that on a glibc system
33 <features.h> is included, which again defines __GLIBC__ */
35 #include "linux_reboot.h"
42 #if defined __GLIBC__ && __GLIBC__ >= 2
43 # include <sys/reboot.h>
44 # define REBOOT(cmd) reboot(cmd)
46 extern int reboot(int, int, int);
47 # define REBOOT(cmd) reboot(LINUX_REBOOT_MAGIC1,LINUX_REBOOT_MAGIC2,(cmd))
49 static inline int my_reboot(int cmd) {
53 #else /* no USE_LIBC */
55 /* direct syscall version */
56 #include <linux/unistd.h>
59 _syscall3(int, reboot, int, magic, int, magic_too, int, cmd);
61 /* Let us hope we have a 3-argument reboot here */
62 extern int reboot(int, int, int);
65 static inline int my_reboot(int cmd) {
66 return reboot(LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, cmd);
72 #endif /* _LINUX_REBOOT_H */