update book code

eBook/examples/chapter_9/reboot.go

@@ -0,0 +1,21 @@
+// reboot.go
+// compile errors (Windows):
+//undefined: syscall.SYS_REBOOT
+// reboot.go:13: not enough arguments in call to syscall.Syscall
+// Linux: compileert, uitvoeren met sudo ./6.out --> systeem herstart
+package main
+
+import (
+	"syscall"
+)
+
+const LINUX_REBOOT_MAGIC1 uintptr = 0xfee1dead
+const LINUX_REBOOT_MAGIC2 uintptr = 672274793
+const LINUX_REBOOT_CMD_RESTART uintptr = 0x1234567
+
+func main() {
+	syscall.Syscall(syscall.SYS_REBOOT,
+		LINUX_REBOOT_MAGIC1,
+		LINUX_REBOOT_MAGIC2,
+		LINUX_REBOOT_CMD_RESTART)
+}