ntdll: Return STATUS_PENDING from NtReadFile() for async read in case of no buffering.

dlls/kernel32/tests/file.c

@@ -5177,9 +5177,9 @@ static void test_overlapped_read(void)
 
     bytes_count = 0xffffffff;
     ret = ReadFile(hfile, buffer, TEST_OVERLAPPED_READ_SIZE, &bytes_count, &ov);
-    todo_wine ok(!ret && GetLastError() == ERROR_IO_PENDING,
+    ok(!ret && GetLastError() == ERROR_IO_PENDING,
             "Unexpected ReadFile result, ret %#x, GetLastError() %u.\n", ret, GetLastError());
-    todo_wine ok(!bytes_count, "Unexpected read size %u.\n", bytes_count);
+    ok(!bytes_count, "Unexpected read size %u.\n", bytes_count);
     ret = GetOverlappedResult(hfile, &ov, &bytes_count, TRUE);
     ok(ret, "Unexpected error %u.\n", GetLastError());
     ok(bytes_count == TEST_OVERLAPPED_READ_SIZE, "Unexpected read size %u.\n", bytes_count);

dlls/ntdll/file.c

@@ -1014,7 +1014,8 @@ err:
     }
 
     if (send_completion) NTDLL_AddCompletion( hFile, cvalue, status, total );
-
+    if (async_read && (options & FILE_NO_INTERMEDIATE_BUFFERING) && status == STATUS_SUCCESS)
+        return STATUS_PENDING;
     return status;
 }
 

dlls/ntdll/tests/file.c

@@ -742,7 +742,7 @@ static void read_file_test(void)
     ResetEvent(event);
     status = pNtReadFile(handle, event, apc, &apc_count, &iosb,
             aligned_buffer, sizeof(aligned_buffer), &offset, NULL);
-    todo_wine ok(status == STATUS_PENDING, "Wrong status %x.\n", status);
+    ok(status == STATUS_PENDING, "Wrong status %x.\n", status);
     WaitForSingleObject(event, 1000);
     ok(U(iosb).Status == STATUS_SUCCESS, "Wrong status %x.\n", U(iosb).Status);
     ok(iosb.Information == sizeof(aligned_buffer), "Wrong info %lu.\n", iosb.Information);