1 /*
2  * Copyright © 2015 Intel Corporation
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice (including the next
12  * paragraph) shall be included in all copies or substantial portions of the
13  * Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21  * IN THE SOFTWARE.
22  *
23  * Authors:
24  *    Daniel Vetter <daniel.vetter@ffwll.ch>
25  *
26  * Based upon a test program provided by Thomas Hellstrom <thellstrom@vmware.com>
27  */
28 
29 /*
30  * Testcase: Check that drop/setMaster correctly transfer master state
31  *
32  * Test approach is only checking auth state (which is part of master state) by
33  * trying to authenticate a client against the wrong master.
34  */
35 
36 #include "igt.h"
37 #include <unistd.h>
38 #include <stdlib.h>
39 #include <stdio.h>
40 #include <string.h>
41 
42 #include "igt_device.h"
43 
44 IGT_TEST_DESCRIPTION("Check that drop/setMaster correctly transfer master "
45 		     "state");
46 
47 igt_simple_main
48 {
49 	int master1, master2, client;
50 	drm_magic_t magic;
51 
52 	master1 = drm_open_driver(DRIVER_ANY);
53 	do_or_die(drmSetMaster(master1));
54 
55 	/* Get an authentication magic from the first master */
56 	client = drm_open_driver(DRIVER_ANY);
57 	do_or_die(drmGetMagic(client, &magic));
58 
59 	/* Open an fd an make it master */
60 	master2 = drm_open_driver(DRIVER_ANY);
61 	igt_device_drop_master(master1);
62 	igt_device_set_master(master2);
63 
64 	/* Auth shouldn't work since we're authenticating with a different
65 	 * master than the one we got the magic from. */
66 	igt_assert_neq(drmAuthMagic(master2, magic), 0);
67 	igt_assert_eq(errno, EINVAL);
68 
69 	close(client);
70 	close(master2);
71 	close(master1);
72 }
73