在通过zwopenfile(打开目录选项)打开目录时,它会返回目录路径的句柄。现在我需要从句柄中获取目录路径。它是我的要求。如何从打开的句柄中获取目录名称/路径
我可以看到一个示例(请参阅下面的代码),其中可以从文件句柄中获取文件名。但下面的例子对目录没有帮助。从打开的句柄中获取目录名是否存在任何可能性。
CHAR* GetFileNameFromHandle(HANDLE hFile)
{
BOOL bSuccess = FALSE;
TCHAR pszFilename[MAX_PATH+1];
HANDLE hFileMap;
// Get the file size.
DWORD dwFileSizeHi = 0;
DWORD dwFileSizeLo = GetFileSize(hFile, &dwFileSizeHi);
if(dwFileSizeLo == 0 && dwFileSizeHi == 0)
{
printf("Cannot map a file with a length of zero.\n");
return FALSE;
}
// Create a file mapping object.
hFileMap = CreateFileMappingW(hFile,
NULL,
PAGE_READONLY,
0,
1,
NULL);
if (hFileMap)
{
// Create a file mapping to get the file name.
void* pMem = MapViewOfFile(hFileMap, FILE_MAP_READ, 0, 0, 1);
if (pMem)
{
if (GetMappedFileNameW (GetCurrentProcess(),
pMem,
pszFilename,
MAX_PATH))
{
// Translate path with device name to drive letters.
TCHAR szTemp[1024];
szTemp[0] = '\0';
if (GetLogicalDriveStrings(1024-1, szTemp))
{
TCHAR szName[MAX_PATH];
TCHAR szDrive[3] = TEXT(" :");
BOOL bFound = FALSE;
TCHAR* p = szTemp;
do
{
// Copy the drive letter to the template string
*szDrive = *p;
// Look up each device name
if (QueryDosDevice(szDrive, szName, MAX_PATH))
{
UINT uNameLen = _tcslen(szName);
if (uNameLen < MAX_PATH)
{
bFound = _tcsnicmp(pszFilename, szName, uNameLen) == 0;
if (bFound && *(pszFilename + uNameLen) == _T('\\'))
{
// Reconstruct pszFilename using szTempFile
// Replace device path with DOS path
TCHAR szTempFile[MAX_PATH];
StringCchPrintf(szTempFile,
MAX_PATH,
TEXT("%s%s"),
szDrive,
pszFilename+uNameLen);
StringCchCopyN(pszFilename, MAX_PATH+1, szTempFile, _tcslen(szTempFile));
}
}
}
// Go to the next NULL character.
while (*p++);
} while (!bFound && *p); // end of string
}
}
bSuccess = TRUE;
UnmapViewOfFile(pMem);
}
CloseHandle(hFileMap);
}
_tprintf(TEXT("File name is %s\n"), pszFilename);
return(pszFilename);
}
介意告诉我们你是如何做到的? – roymustang86 2011-09-23 14:17:39
有关如何使用NtQueryObject()执行此任务,请参阅http://stackoverflow.com/a/5286888/4727717。这使用了相当多的Windows API的未记录功能。 – Holger 2016-03-08 09:42:01