获取进程全路径

BOOL
GetProcPath(
__in	BOOL	bCurrentProc,
__in	ULONG	ulPid,
__inout LPTSTR	lpProcPath,
__in	ULONG	ulProcPathBufLen
)
{
BOOL	bRet						= FALSE;

HMODULE hModule						= NULL;
HANDLE	hProc						= NULL;
DWORD	dwProcPathLen				= 0;
TCHAR	tchProcPathDev[MAX_PATH]	= {0};
TCHAR	tchVolNameDev[MAX_PATH]		= {0};
TCHAR	tchVolName[MAX_PATH]		= {0};

__try
{
if (!lpProcPath || !ulProcPathBufLen || (!bCurrentProc && !ulPid))
{
printf("[GetProcPath] : input parameter error \n");
__leave;
}

if (bCurrentProc)
{
if (!GetModuleFileName(NULL, lpProcPath, ulProcPathBufLen / sizeof(TCHAR)))
{
printf("[GetProcPath] : GetModuleFileName failed. (%d) \n", GetLastError());
__leave;
}

bRet = TRUE;
__leave;
}

hProc = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, ulPid);
if (!hProc)
{
printf("[GetProcPath] : OpenProcess failed. (%d) \n", GetLastError());
__leave;
}

hModule = LoadLibrary(_T("Kernel32.dll"));
if (!hModule)
{
printf("[GetProcPath] : LoadLibrary failed. (%d) \n", GetLastError());
__leave;
}

if (GetProcAddress(hModule, "QueryFullProcessImageNameA"))
{
dwProcPathLen = ulProcPathBufLen / sizeof(TCHAR);
if (!QueryFullProcessImageName(hProc, 0, lpProcPath, &dwProcPathLen))
{
printf("[GetProcPath] : QueryFullProcessImageName failed. (%d) \n", GetLastError());
__leave;
}

bRet = TRUE;
__leave;
}

if (!GetProcessImageFileName(hProc, tchProcPathDev, MAX_PATH))
{
printf("[GetProcPath] : GetProcessImageFileName failed. (%d) \n", GetLastError());
__leave;
}

_tcscat_s(tchVolName, MAX_PATH, _T("A:"));
for (; *tchVolName <= _T('Z'); (*tchVolName)++)
{
memset(tchVolNameDev, 0, MAX_PATH * sizeof(TCHAR));
if (!QueryDosDevice(tchVolName, tchVolNameDev, MAX_PATH))
{
if (GetLastError() == 2)
continue;
else
{
printf("[GetProcPath] : QueryDosDevice failed. (%d) \n", GetLastError());
__leave;
}
}

if (_tcsncmp(tchProcPathDev, tchVolNameDev, _tcslen(tchVolNameDev)) == 0)
{
bRet = TRUE;
break;
}
}

if (bRet)
{
_tcscat_s(lpProcPath, ulProcPathBufLen / sizeof(TCHAR), tchVolName);
_tcscat_s(lpProcPath, ulProcPathBufLen / sizeof(TCHAR), tchProcPathDev + _tcslen(tchVolNameDev));
}
}
__finally
{
if (hModule)
FreeLibrary(hModule);

if (hProc)
CloseHandle(hProc);
}

return bRet;
}