delphi编写的虚拟磁盘开发源码分析.doc

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1、.Delphi编写的虚拟磁盘开发源码分析一、虚拟光驱驱动（C语言编写）1、Vcd文件夹（1）、DeviceThread.h//设备的处理线程VOIDDeviceThread(INPVOIDContext);（2）、DeviceThread.c#include#include#include#include#include#include#include#include

2、hread.h>#include//////////////////////////////////////////////////////////////////////////NTSTATUSVCDOpenFile(INPDEVICE_OBJECTDeviceObject,INPIRPIrp){PDEVICE_EXTENSIONdevice_extension;PCHARfilename;UCHARafile_name[MAX_PATH]={0};UNICODE_STRINGufile_name;NTS

3、TATUSstatus;OBJECT_ATTRIBUTESobject_attributes;FILE_END_OF_FILE_INFORMATIONfile_eof;FILE_BASIC_INFORMATIONfile_basic;FILE_STANDARD_INFORMATIONfile_standard;FILE_ALIGNMENT_INFORMATIONfile_alignment;DbgPrint("VCDOpenFile");device_extension=(PDEVICE_EXTENSION)Devi

4、ceObject->DeviceExtension;..filename=(PCHAR)Irp->AssociatedIrp.SystemBuffer;RtlCopyMemory(device_extension->oldfile_name,filename,MAX_PATH);if(filename[0]=='\'){if(filename[1]=='\')//\serversharepathXXX.iso->??UNC\serversharepathXXX.iso{strcpy(afile_n

5、ame,"\??\UNC");strcat(afile_name,filename);}else//DeviceHarddisk0Partition1pathXXX.iso不变{strcpy(afile_name,filename);}}else//c:pathXXX.iso->??c:pathXXX.iso{strcpy(afile_name,"\??\");strcat(afile_name,filename);}device_extension->file_name.Length=(U

6、SHORT)strlen(afile_name);device_extension->file_name.MaximumLength=device_extension->file_name.Length;device_extension->file_name.Buffer=ExAllocatePool(NonPagedPool,device_extension->file_name.Length);RtlCopyMemory(device_extension->file_name.Buffer,afile_name,de

7、vice_extension->file_name.Length);status=RtlAnsiStringToUnicodeString(&ufile_name,&device_extension->file_name,TRUE);if(!NT_SUCCESS(status))..{ExFreePool(device_extension->file_name.Buffer);Irp->IoStatus.Status=status;Irp->IoStatus.Information=0;returnstatus;}Ini

8、tializeObjectAttributes(&object_attributes,&ufile_name,OBJ_CASE_INSENSITIVE,NULL,NULL);status=ZwCreateFile(&device_extension->file_handle,GENERIC_READ,&object_