73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
#ifndef _LINUX_REBOOT_H
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#define _LINUX_REBOOT_H
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/*
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* Magic values required to use _reboot() system call.
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*/
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#define LINUX_REBOOT_MAGIC1 0xfee1dead
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#define LINUX_REBOOT_MAGIC2 672274793
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#define LINUX_REBOOT_MAGIC2A 85072278
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#define LINUX_REBOOT_MAGIC2B 369367448
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/*
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* Commands accepted by the _reboot() system call.
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*
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* RESTART Restart system using default command and mode.
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* HALT Stop OS and give system control to ROM monitor, if any.
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* CAD_ON Ctrl-Alt-Del sequence causes RESTART command.
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* CAD_OFF Ctrl-Alt-Del sequence sends SIGINT to init task.
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* POWER_OFF Stop OS and remove all power from system, if possible.
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* RESTART2 Restart system using given command string.
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*/
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#define LINUX_REBOOT_CMD_RESTART 0x01234567
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#define LINUX_REBOOT_CMD_HALT 0xCDEF0123
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#define LINUX_REBOOT_CMD_CAD_ON 0x89ABCDEF
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#define LINUX_REBOOT_CMD_CAD_OFF 0x00000000
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#define LINUX_REBOOT_CMD_POWER_OFF 0x4321FEDC
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#define LINUX_REBOOT_CMD_RESTART2 0xA1B2C3D4
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/* Including <unistd.h> makes sure that on a glibc system
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<features.h> is included, which again defines __GLIBC__ */
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#include <unistd.h>
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#include "linux_reboot.h"
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#define USE_LIBC
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#ifdef USE_LIBC
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/* libc version */
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#if defined __GLIBC__ && __GLIBC__ >= 2
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# include <sys/reboot.h>
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# define REBOOT(cmd) reboot(cmd)
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#else
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extern int reboot(int, int, int);
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# define REBOOT(cmd) reboot(LINUX_REBOOT_MAGIC1,LINUX_REBOOT_MAGIC2,(cmd))
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#endif
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static inline int my_reboot(int cmd) {
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return REBOOT(cmd);
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}
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#else /* no USE_LIBC */
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/* direct syscall version */
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#include <linux/unistd.h>
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#ifdef _syscall3
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_syscall3(int, reboot, int, magic, int, magic_too, int, cmd);
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#else
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/* Let us hope we have a 3-argument reboot here */
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extern int reboot(int, int, int);
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#endif
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static inline int my_reboot(int cmd) {
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return reboot(LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, cmd);
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}
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#endif
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#endif /* _LINUX_REBOOT_H */
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