public static extern int ZwQueryInformationFile(int hfile, ref IO_STATUS_BLOCK ioStatusBlock, ref FILE_NAME_INFO fileInformation, int length, int FileInformationClass);
/// <summary>
/// 把远程file handle复制到本地进程
/// 然后获取文件名
/// </summary>
/// <param name="p_hfile"></param>
private unsafe void ReadFileInfo(IntPtr p_hfile)
{
IntPtr my_hfile = new IntPtr(-1);
int hCurProcess = -1; //WinApi.GetCurrentProcess();
bool result;
result = WinApi.DuplicateHandle(processHandle.ToInt32(), p_hfile.ToInt32(), hCurProcess, ref my_hfile, 0x80000000, false, 2);
#region GetFileInformationByHandle 文件最基本信息
var fileinfo = new BY_HANDLE_FILE_INFORMATION();
result = WinApi.GetFileInformationByHandle(my_hfile.ToInt32(), ref fileinfo);
//Console.Out.WriteLine(fileinfo.dwFileAttributes);
#endregion
#region GetFileInformationByHandleEx
var fileinfo2 = new FILE_FULL_DIR_INFO();
int fileInfo2Type = (int)FileInformationClass.FileFullDirectoryInfo; //0xe;
//本来想用开辟非托管内存的操作，传指针到winapi，后来发现那块内存有数据后用
//PtrToStructure转结构体报错，也许是操作问题，还不如直接传结构体
int size2 = Marshal.SizeOf(fileinfo2);
IntPtr p_fileInfo2 = Marshal.AllocHGlobal(size2);
Marshal.StructureToPtr(fileinfo2, p_fileInfo2, false);
//调用失败 大概是LARGE_INTEGER 这个union的结构不对
result = WinApi.GetFileInformationByHandleEx(my_hfile.ToInt32(), fileInfo2Type, ref fileinfo2, size2);
var fileinfo3 = new FILE_NAME_INFO();
//fileinfo3.FileName = "";
int fileInfo3Type = (int)FileInformationClass.FileNameInfo; //0x2;
int size3 = Marshal.SizeOf(fileinfo3) + 1000 * 2;
IntPtr p_fileInfo3 = Marshal.AllocHGlobal(size3);
Marshal.StructureToPtr(fileinfo3, p_fileInfo3, false);
//\otherproject\WriteFileHook\Log4netLoger\bin\x86\Debug\Logs\debug.log20170901
//result = WinApi.GetFileInformationByHandleEx(my_hfile.ToInt32(), fileInfo3Type, p_fileInfo3, size3);
result = WinApi.GetFileInformationByHandleEx(my_hfile.ToInt32(), fileInfo3Type, ref fileinfo3, size3);
StringBuilder fn3 = new StringBuilder(1000);
int len3 = WinApi.GetFullPathName(fileinfo3.FileName, 1000, fn3, null);
//输出正常路径
//E:\otherproject\WriteFileHook\Log4netLoger\bin\x86\Debug\Logs\debug.log20170901
Console.Out.WriteLine(fn3);
#endregion
#region GetFinalPathNameByHandle
//char[] fileName = new char[1000];
StringBuilder fileName = new StringBuilder(1000);
//获取的带设备路径
//\Device\HarddiskVolume4\otherproject\WriteFileHook\Log4netLoger\bin\x86\Debug\Logs\debug.log20170901
int size4 = WinApi.GetFinalPathNameByHandle(my_hfile.ToInt32(), fileName, 1000, 0x2);
StringBuilder fn4 = new StringBuilder(1000);
//会在前面在加个盘符，然而没去掉设备路径，超谐
//有专门根据设备路径获取盘符路径的方法
//E:\Device\HarddiskVolume4\otherproject\WriteFileHook\Log4netLoger\bin\x86\Debug\Logs\debug.log20170901
int len4 = WinApi.GetFullPathName(fileName.ToString(), 1000, fn4, null);
Console.Out.WriteLine(fn4);
#endregion
#region ZwQueryInformationFile
//GetFileInformationByHandleEx 内部调用的就是这个吧（
var fileStatus5 = new IO_STATUS_BLOCK();
int ssize5 = Marshal.SizeOf(fileStatus5);
IntPtr p_fileStatus5 = Marshal.AllocHGlobal(ssize5);
Marshal.StructureToPtr(fileStatus5, p_fileStatus5, false);
var fileinfo5 = new FILE_NAME_INFO();
//fileinfo5.FileName = "";
int fileInfo5Type = (int)FileInformationClass.FileFullDirectoryInfo; //9;
int size5 = Marshal.SizeOf(fileinfo5) + 1000 * 2;
IntPtr p_fileInfo5 = Marshal.AllocHGlobal(size5);
Marshal.StructureToPtr(fileinfo5, p_fileInfo5, false);
int ret = WinApi.ZwQueryInformationFile(my_hfile.ToInt32(), ref fileStatus5, ref fileinfo5, size5, fileInfo5Type);
//\otherproject\WriteFileHook\Log4netLoger\bin\x86\Debug\Logs\debug.log20170901
Console.Out.WriteLine(fileinfo5.FileName);
#endregion
}
public static extern unsafe bool GetFileInformationByHandleEx(int hFile, int FileInformationClass, ref FILE_NAME_INFO lpFileInformation, int dwBufferSize);
