使用 ExAllocatePool 函数分配内存

/*使用ExAllocatePool函数分配内存
by exchen
2009-10-03
*/
#include <ntddk.h>

#define BUFFER_SIZE 256    

VOID DriverUnload( 
IN PDRIVER_OBJECT  DriverObject 
)
{
	DbgPrint("驱动已经被停止了\n");
}

NTSTATUS DriverEntry( 
IN PDRIVER_OBJECT  DriverObject, 
IN PUNICODE_STRING  RegistryPath 
)
{
	UNICODE_STRING usBuff;

	UNICODE_STRING usCopyDes;

	RtlInitUnicodeString(&usBuff,L"My String");

	usCopyDes.Buffer=(PWSTR)ExAllocatePool(PagedPool,BUFFER_SIZE); //分配内存
	usCopyDes.MaximumLength=BUFFER_SIZE;

	RtlCopyUnicodeString(&usCopyDes,&usBuff);//拷贝字符串

	DbgPrint("拷贝为:%wZ",&usCopyDes);        //打印拷贝内容

	RtlFreeUnicodeString(&usCopyDes);            //释放分配的空间

	DriverObject->DriverUnload = DriverUnload;
	return STATUS_SUCCESS;
}

/*使用ExAllocatePool函数分配内存

by exchen

2009-10-03

#include <ntddk.h>

#define BUFFER_SIZE 256

VOID DriverUnload(

IN PDRIVER_OBJECT DriverObject

)

{

DbgPrint("驱动已经被停止了\n");

}

NTSTATUS DriverEntry(

IN PDRIVER_OBJECT DriverObject,

IN PUNICODE_STRING RegistryPath

)

{

UNICODE_STRING usBuff;

UNICODE_STRING usCopyDes;

RtlInitUnicodeString(&usBuff,L"My String");

usCopyDes.Buffer=(PWSTR)ExAllocatePool(PagedPool,BUFFER_SIZE); //分配内存

usCopyDes.MaximumLength=BUFFER_SIZE;

RtlCopyUnicodeString(&usCopyDes,&usBuff);//拷贝字符串

DbgPrint("拷贝为:%wZ",&usCopyDes); //打印拷贝内容

RtlFreeUnicodeString(&usCopyDes); //释放分配的空间

DriverObject->DriverUnload = DriverUnload;

return STATUS_SUCCESS;

}

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