RegLoadKey returns 1314 when dll function called from msiexec 1.10.1029.0 and 2.00.2600.0

[Art Komninos]

Calling RegLoadKey in the following returns 1314 when dll function called
from msiexec, using InstallShield custom action. Calling function from test
program, which uses LoadLibrary, succeeds. I use the Privilege function from
Q168877.

CHKEY_USER::CHKEY_USER(const cstring &strProfileKey,
const cstring &strProfilePath):m_hKey(NULL), m_bUnload(false),
m_strProfileKey(strProfileKey)
{
// test privilege for loading hive
if (!_privilege(SE_RESTORE_NAME, true))
return;

// make path to reg file
cstring strRegPath(strProfilePath);
cstring::iterator it(strRegPath.end());

if (_T('\\') != *--it)
{
strRegPath.append(1, _T('\\'));
}

strRegPath.append(_T("ntuser.dat"));

// load key
long lr = RegLoadKey(HKEY_USERS, m_strProfileKey.c_str(),
strRegPath.c_str());
m_bUnload = ERROR_SUCCESS == lr;

if (!m_bUnload)
{
_privilege(SE_RESTORE_NAME, false);
}

if (ERROR_SUCCESS == lr) // open loaded key
{
RegOpenKeyEx(HKEY_USERS, m_strProfileKey.c_str(), 0, KEY_READ, &m_hKey);
}
else if (ERROR_SHARING_VIOLATION == lr) // open current user
{
RegOpenKeyEx(HKEY_CURRENT_USER, NULL, 0, KEY_READ, &m_hKey);
}
}

// from Q168877
bool CHKEY_USER::_privilege(LPTSTR szPrivilege, bool bEnable)
{
HANDLE hToken;
TOKEN_PRIVILEGES tp;

// obtain the processes token
if (!OpenProcessToken(GetCurrentProcess(),
TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken))
return false;

// get the luid
if (!LookupPrivilegeValue(NULL, szPrivilege,
&tp.Privileges[0].Luid))
return false;

tp.PrivilegeCount = 1;

if (bEnable)
tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
else
tp.Privileges[0].Attributes = 0;

// enable or disable the privilege
if (!AdjustTokenPrivileges(hToken, FALSE, &tp, 0,
(PTOKEN_PRIVILEGES)NULL, 0))
return false;

if (!CloseHandle(hToken))
return false;

return true;
}

[Andreas Magnusson]

Yep, noticed the same thing myself. This probably means that the msiexec.exe
doesn't have the privs.
See also this thread (watch for line-breaks):
http://groups.google.com/groups?hl=en&lr=lang_en|lang_sv&ie=UTF-8&newwindow=
1&threadm=icZh9.7%24kM4.151648%40news.cpqcorp.net&rnum=1&prev=/groups%3Fhl%3
Den%26lr%3Dlang_en%257Clang_sv%26ie%3DISO-8859-1%26newwindow%3D1%26q%3DPRIVI
LEGE%26meta%3Dgroup%253Dmicrosoft.public.platformsdk.msi

/Andreas

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