Implement SetThreadToken using NtSetInformationThread.

dlls/advapi32/security.c

@@ -362,11 +362,8 @@ SetTokenInformation( HANDLE token, TOKEN_INFORMATION_CLASS tokeninfoclass,
  */
 BOOL WINAPI SetThreadToken(PHANDLE thread, HANDLE token)
 {
-    FIXME("(%p, %p): stub (NT impl. only)\n", thread, token);
-
-    SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
-
-    return FALSE;
+    CallWin32ToNt (NtSetInformationThread( thread ? *thread : GetCurrentThread(),
+                                           ThreadImpersonationToken, &token, sizeof token ));
 }
 
 /*	##############################

dlls/ntdll/thread.c

@@ -539,12 +539,18 @@ NTSTATUS WINAPI NtSetInformationThread( HANDLE handle, THREADINFOCLASS class,
         FIXME( "ZeroTlsCell not supported on other threads\n" );
         return STATUS_NOT_IMPLEMENTED;
 
+    case ThreadImpersonationToken:
+        {
+            const HANDLE *phToken = data;
+            if (length != sizeof(HANDLE)) return STATUS_INVALID_PARAMETER;
+            FIXME("Set ThreadImpersonationToken handle to %p\n", *phToken );
+            return STATUS_SUCCESS;
+        }
     case ThreadBasicInformation:
     case ThreadTimes:
     case ThreadPriority:
     case ThreadBasePriority:
     case ThreadAffinityMask:
-    case ThreadImpersonationToken:
     case ThreadDescriptorTableEntry:
     case ThreadEnableAlignmentFaultFixup:
     case ThreadEventPair_Reusable: