2 * Copyright © 2007 Intel Corporation
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:
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
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
24 * Eric Anholt <eric@anholt.net>
29 * Tests various potential failures of the DRM locking mechanisms
33 #include <sys/ioctl.h>
44 unsigned int lock1 = 0x00001111;
45 unsigned int lock2 = 0x00002222;
47 /* return time in milliseconds */
53 gettimeofday(&tv, NULL);
54 return tv.tv_sec * 1000 + tv.tv_usec / 1000;
58 wait_event(int pipe, enum auth_event expected_event)
61 enum auth_event event;
64 ret = read(commfd[pipe], &in, 1);
69 if (event != expected_event)
70 errx(1, "unexpected event: %d\n", event);
74 send_event(int pipe, enum auth_event send_event)
80 ret = write(commfd[pipe], &event, 1);
82 err(1, "failed to send event %d", event);
86 client_auth(int drmfd)
91 /* Get a client magic number and pass it to the master for auth. */
92 ret = ioctl(drmfd, DRM_IOCTL_GET_MAGIC, &auth);
94 err(1, "Couldn't get client magic");
95 send_event(0, CLIENT_MAGIC);
96 ret = write(commfd[0], &auth.magic, sizeof(auth.magic));
98 err(1, "Couldn't write auth data");
102 server_auth(int drmfd)
104 struct drm_auth auth;
107 send_event(1, SERVER_READY);
108 wait_event(1, CLIENT_MAGIC);
109 ret = read(commfd[1], &auth.magic, sizeof(auth.magic));
111 err(1, "Failure to read client magic");
113 ret = ioctl(drmfd, DRM_IOCTL_AUTH_MAGIC, &auth);
115 err(1, "Failure to authenticate client magic\n");
118 /** Tests that locking is successful in normal conditions */
120 test_lock_unlock(int drmfd)
124 ret = drmGetLock(drmfd, lock1, 0);
126 err(1, "Locking failed");
127 ret = drmUnlock(drmfd, lock1);
129 err(1, "Unlocking failed");
132 /** Tests that unlocking the lock while it's not held works correctly */
134 test_unlock_unlocked(int drmfd)
138 ret = drmUnlock(drmfd, lock1);
140 err(1, "Unlocking unlocked lock succeeded");
143 /** Tests that unlocking a lock held by another context fails appropriately */
145 test_unlock_unowned(int drmfd)
149 ret = drmGetLock(drmfd, lock1, 0);
151 ret = drmUnlock(drmfd, lock2);
153 errx(1, "Unlocking other context's lock succeeded");
154 ret = drmUnlock(drmfd, lock1);
159 * Tests that an open/close by the same process doesn't result in the lock
162 static void test_open_close_locked(drmfd)
166 ret = drmGetLock(drmfd, lock1, 0);
168 /* XXX: Need to make sure that this is the same device as drmfd */
169 tempfd = drm_open_any();
171 ret = drmUnlock(drmfd, lock1);
173 errx(1, "lock lost during open/close by same pid");
181 wait_event(0, SERVER_READY);
183 /* XXX: Should make sure we open the same DRM as the master */
184 drmfd = drm_open_any();
188 /* Wait for the server to grab the lock, then grab it ourselves (to
189 * contest it). Hopefully we hit it within the window of when the
192 wait_event(0, SERVER_LOCKED);
193 ret = drmGetLock(drmfd, lock2, 0);
196 err(1, "Failed to get lock on client\n");
197 drmUnlock(drmfd, lock2);
199 /* Tell the server that our locking completed, and when it did */
200 send_event(0, CLIENT_LOCKED);
201 ret = write(commfd[0], &time, sizeof(time));
209 int drmfd, tempfd, ret;
210 unsigned int client_time, unlock_time;
212 drmfd = drm_open_any_master();
214 test_lock_unlock(drmfd);
215 test_unlock_unlocked(drmfd);
216 test_unlock_unowned(drmfd);
217 test_open_close_locked(drmfd);
219 /* Perform the authentication sequence with the client. */
222 /* Now, test that the client attempting to lock while the server
223 * holds the lock works correctly.
225 ret = drmGetLock(drmfd, lock1, 0);
227 send_event(1, SERVER_LOCKED);
228 /* Wait a while for the client to do its thing */
230 ret = drmUnlock(drmfd, lock1);
232 unlock_time = get_millis();
234 wait_event(1, CLIENT_LOCKED);
235 ret = read(commfd[1], &client_time, sizeof(client_time));
237 err(1, "Failure to read client magic");
239 if (client_time < unlock_time)
240 errx(1, "Client took lock before server released it");
245 int main(int argc, char **argv)
252 err(1, "Couldn't create pipe");
256 err(1, "failure to fork client");