//IOKitTest.h
#include <IOKit/IOService.h>
class com_osxkernel_driver_IOKitTest : public IOService
{
OSDeclareDefaultStructors(com_osxkernel_driver_IOKitTest)
public:
virtual bool init (OSDictionary* dictionary = NULL);
virtual void free (void);
virtual IOService* probe (IOService* provider, SInt32* score);
virtual bool start (IOService* provider);
virtual void stop (IOService* provider);
};
//IOKitTest.cpp
#include "IOKitTest.h"
#include <IOKit/IOLib.h>
//定义超类
#define super IOService
//表示提供构造与析构函数的声明 以及元数据
OSDefineMetaClassAndStructors(com_osxkernel_driver_IOKitTest, IOService)
//构造函数
bool com_osxkernel_driver_IOKitTest::init (OSDictionary* dict)
{
bool res = super::init(dict);
IOLog("IOKitTest::init\n");
return res;
}
void com_osxkernel_driver_IOKitTest::free (void)
{
IOLog("IOKitTest::free\n");
super::free();
}
//检查硬件设备
IOService* com_osxkernel_driver_IOKitTest::probe (IOService* provider, SInt32* score)
{
IOService *res = super::probe(provider, score);
IOLog("IOKitTest::probe\n");
return res;
}
bool com_osxkernel_driver_IOKitTest::start (IOService *provider)
{
bool res = super::start(provider);
IOLog("IOKitTest::start\n");
return res;
}
void com_osxkernel_driver_IOKitTest::stop (IOService *provider)
{
IOLog("IOKitTest::stop\n");
super::stop(provider);
}
注意点： 内核版本 编译器版本 安装：
liuhailong:~ liuhailong$ sudo chown -R root:wheel /Users/liuhailong/Library/Developer/Xcode/DerivedData/IOKitTest-grjzacxpxpyxiidhzzobgihdxfqm/Build/Products/Debug/IOKitTest.kext
liuhailong:~ liuhailong$ sudo kextload /Users/liuhailong/Library/Developer/Xcode/DerivedData/IOKitTest-grjzacxpxpyxiidhzzobgihdxfqm/Build/Products/Debug/IOKitTest.kext
liuhailong:~ liuhailong$ sudo kextunload /Users/liuhailong/Library/Developer/Xcode/DerivedData/IOKitTest-grjzacxpxpyxiidhzzobgihdxfqm/Build/Products/Debug/IOKitTest.kext
liuhailong:~ liuhailong$
可以安装个IORegistryExplorer 工具查看：
