设计、实现Windows/Linux内核驱动,写出具体代码
时间: 2024-01-21 19:02:15 浏览: 190
由于驱动开发需要涉及到底层操作系统知识,因此需要有一定的编程基础和操作系统知识。
以下是一个简单的Windows内核驱动实现示例,通过驱动程序实现对系统中断的监控和捕获:
```c
#include <ntddk.h>
#define DEVICE_NAME L"\\Device\\MyDriver"
#define LINK_NAME L"\\DosDevices\\MyDriver"
UNICODE_STRING DeviceName;
UNICODE_STRING LinkName;
PDEVICE_OBJECT pDeviceObject = NULL;
UINT32 InterruptCount = 0;
VOID OnInterrupt(PDEVICE_OBJECT pDeviceObject, PIRP pIrp, PVOID pContext)
{
InterruptCount++;
KdPrint(("MyDriver: Interrupt count = %d\n", InterruptCount));
IoCompleteRequest(pIrp, IO_NO_INCREMENT);
}
NTSTATUS CreateDevice(IN PDRIVER_OBJECT pDriverObject)
{
NTSTATUS status;
RtlInitUnicodeString(&DeviceName, DEVICE_NAME);
RtlInitUnicodeString(&LinkName, LINK_NAME);
status = IoCreateDevice(pDriverObject, 0, &DeviceName, FILE_DEVICE_UNKNOWN, FILE_DEVICE_SECURE_OPEN, FALSE, &pDeviceObject);
if (!NT_SUCCESS(status))
{
KdPrint(("MyDriver: IoCreateDevice failed with status 0x%x\n", status));
return status;
}
status = IoCreateSymbolicLink(&LinkName, &DeviceName);
if (!NT_SUCCESS(status))
{
KdPrint(("MyDriver: IoCreateSymbolicLink failed with status 0x%x\n", status));
IoDeleteDevice(pDeviceObject);
return status;
}
return STATUS_SUCCESS;
}
VOID DriverUnload(IN PDRIVER_OBJECT pDriverObject)
{
IoDeleteSymbolicLink(&LinkName);
IoDeleteDevice(pDeviceObject);
KdPrint(("MyDriver: Unloaded\n"));
}
NTSTATUS DriverEntry(IN PDRIVER_OBJECT pDriverObject, IN PUNICODE_STRING pRegistryPath)
{
NTSTATUS status;
KdPrint(("MyDriver: Loaded\n"));
pDriverObject->DriverUnload = DriverUnload;
status = CreateDevice(pDriverObject);
if (!NT_SUCCESS(status))
{
KdPrint(("MyDriver: CreateDevice failed with status 0x%x\n", status));
return status;
}
IoCreateInterrupt(pDriverObject, OnInterrupt, NULL, 0x1E, 0xFF, 0, NULL, pDeviceObject);
return STATUS_SUCCESS;
}
```
在上述代码中,我们创建了一个设备对象和一个符号链接,用于与用户模式应用程序通信。我们还创建了一个中断对象,处理系统中断并调用OnInterrupt函数,在该函数中对中断次数进行计数。
对于Linux内核驱动的实现,可以参考以下示例代码,实现对系统内存的读写:
```c
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/fs.h>
#include <asm/uaccess.h>
MODULE_LICENSE("GPL");
#define DEVICE_NAME "mydriver"
#define BUF_LEN 80
static int Major;
static char msg[BUF_LEN];
static char *msg_Ptr;
static int device_open(struct inode *inode, struct file *file)
{
try_module_get(THIS_MODULE);
return 0;
}
static int device_release(struct inode *inode, struct file *file)
{
module_put(THIS_MODULE);
return 0;
}
static ssize_t device_read(struct file *filp, char *buffer, size_t length, loff_t *offset)
{
int bytes_read = 0;
while (length && *msg_Ptr)
{
put_user(*(msg_Ptr++), buffer++);
length--;
bytes_read++;
}
return bytes_read;
}
static ssize_t device_write(struct file *filp, const char *buffer, size_t length, loff_t *offset)
{
int bytes_written = 0;
while (length && bytes_written < BUF_LEN - 1)
{
get_user(msg[bytes_written], buffer++);
length--;
bytes_written++;
}
msg[bytes_written] = '\0';
msg_Ptr = msg;
return bytes_written;
}
static struct file_operations fops = {
.read = device_read,
.write = device_write,
.open = device_open,
.release = device_release};
static int __init mydriver_init(void)
{
Major = register_chrdev(0, DEVICE_NAME, &fops);
if (Major < 0)
{
printk(KERN_ALERT "Registering char device failed with %d\n", Major);
return Major;
}
printk(KERN_INFO "I was assigned major number %d. To talk to\n", Major);
printk(KERN_INFO "the driver, create a dev file with\n");
printk(KERN_INFO "'mknod /dev/%s c %d 0'.\n", DEVICE_NAME, Major);
return 0;
}
static void __exit mydriver_exit(void)
{
unregister_chrdev(Major, DEVICE_NAME);
printk(KERN_INFO "Goodbye, world\n");
}
module_init(mydriver_init);
module_exit(mydriver_exit);
```
在该示例代码中,我们定义了一个字符设备,实现了对设备的打开、读取和写入操作。在模块初始化函数中,我们调用了register_chrdev函数进行设备注册,并在卸载函数中调用unregister_chrdev函数注销设备。
以上是简单的Windows/Linux内核驱动实现示例,实际驱动开发需要根据具体需求进行设计和实现。
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