private static void SetPrivilege(string privilegeName, int attrib)
{
SafeTokenHandle hToken = null;
Interop.LUID debugValue = new Interop.LUID();
// this is only a "pseudo handle" to the current process - no need to close it later
SafeProcessHandle processHandle = Interop.mincore.GetCurrentProcess();
// get the process token so we can adjust the privilege on it. We DO need to
// close the token when we're done with it.
if (!Interop.mincore.OpenProcessToken(processHandle, Interop.TOKEN_ADJUST_PRIVILEGES, out hToken))
{
throw new Win32Exception();
}
try
{
if (!Interop.mincore.LookupPrivilegeValue(null, privilegeName, out debugValue))
{
throw new Win32Exception();
}
Interop.TokenPrivileges tkp = new Interop.TokenPrivileges();
tkp.Luid = debugValue;
tkp.Attributes = attrib;
Interop.mincore.AdjustTokenPrivileges(hToken, false, tkp, 0, IntPtr.Zero, IntPtr.Zero);
// AdjustTokenPrivileges can return true even if it failed to
// set the privilege, so we need to use GetLastError
if (Marshal.GetLastWin32Error() != Interop.ERROR_SUCCESS)
{
throw new Win32Exception();
}
}
finally
{
#if FEATURE_TRACESWITCH
Debug.WriteLineIf(_processTracing.TraceVerbose, "Process - CloseHandle(processToken)");
#endif
if (hToken != null)
{
hToken.Dispose();
}
}
}
// -----------------------------
// ---- PAL layer ends here ----
// -----------------------------
static ProcessManager()
{
// In order to query information (OpenProcess) on some protected processes
// like csrss, we need SeDebugPrivilege privilege.
// After removing the depenecy on Performance Counter, we don't have a chance
// to run the code in CLR performance counter to ask for this privilege.
// So we will try to get the privilege here.
// We could fail if the user account doesn't have right to do this, but that's fair.
Interop.LUID luid = new Interop.LUID();
if (!Interop.mincore.LookupPrivilegeValue(null, Interop.SeDebugPrivilege, out luid))
{
return;
}
SafeTokenHandle tokenHandle = null;
try
{
if (!Interop.mincore.OpenProcessToken(
Interop.mincore.GetCurrentProcess(),
Interop.TOKEN_ADJUST_PRIVILEGES,
out tokenHandle))
{
return;
}
Interop.TokenPrivileges tp = new Interop.TokenPrivileges();
tp.Luid = luid;
tp.Attributes = Interop.SE_PRIVILEGE_ENABLED;
// AdjustTokenPrivileges can return true even if it didn't succeed (when ERROR_NOT_ALL_ASSIGNED is returned).
Interop.mincore.AdjustTokenPrivileges(tokenHandle, false, tp, 0, IntPtr.Zero, IntPtr.Zero);
}
finally
{
if (tokenHandle != null)
{
tokenHandle.Dispose();
}
}
}
static ProcessManager()
{
// In order to query information (OpenProcess) on some protected processes
// like csrss, we need SeDebugPrivilege privilege.
// After removing the depenecy on Performance Counter, we don't have a chance
// to run the code in CLR performance counter to ask for this privilege.
// So we will try to get the privilege here.
// We could fail if the user account doesn't have right to do this, but that's fair.
Interop.LUID luid = new Interop.LUID();
if (!Interop.mincore.LookupPrivilegeValue(null, "SeDebugPrivilege", out luid))
{
return;
}
SafeTokenHandle tokenHandle = null;
try
{
if (!Interop.mincore.OpenProcessToken(
Interop.mincore.GetCurrentProcess(),
TOKEN_ADJUST_PRIVILEGES,
out tokenHandle))
{
return;
}
Interop.TokenPrivileges tp = new Interop.TokenPrivileges();
tp.Luid = luid;
tp.Attributes = Interop.SE_PRIVILEGE_ENABLED;
// AdjustTokenPrivileges can return true even if it didn't succeed (when ERROR_NOT_ALL_ASSIGNED is returned).
Interop.mincore.AdjustTokenPrivileges(tokenHandle, false, tp, 0, IntPtr.Zero, IntPtr.Zero);
}
finally
{
if (tokenHandle != null)
{
tokenHandle.Dispose();
}
}
}
private static void SetPrivilege(string privilegeName, int attrib)
{
SafeTokenHandle hToken = null;
Interop.LUID debugValue = new Interop.LUID();
// this is only a "pseudo handle" to the current process - no need to close it later
SafeProcessHandle processHandle = Interop.mincore.GetCurrentProcess();
// get the process token so we can adjust the privilege on it. We DO need to
// close the token when we're done with it.
if (!Interop.mincore.OpenProcessToken(processHandle, Interop.TOKEN_ADJUST_PRIVILEGES, out hToken))
{
throw new Win32Exception();
}
try
{
if (!Interop.mincore.LookupPrivilegeValue(null, privilegeName, out debugValue))
{
throw new Win32Exception();
}
Interop.TokenPrivileges tkp = new Interop.TokenPrivileges();
tkp.Luid = debugValue;
tkp.Attributes = attrib;
Interop.mincore.AdjustTokenPrivileges(hToken, false, tkp, 0, IntPtr.Zero, IntPtr.Zero);
// AdjustTokenPrivileges can return true even if it failed to
// set the privilege, so we need to use GetLastError
if (Marshal.GetLastWin32Error() != Interop.ERROR_SUCCESS)
{
throw new Win32Exception();
}
}
finally
{
#if FEATURE_TRACESWITCH
Debug.WriteLineIf(_processTracing.TraceVerbose, "Process - CloseHandle(processToken)");
#endif
if (hToken != null)
{
hToken.Dispose();
}
}
}
