Riley Andrews | dc9b148 | 2014-12-18 11:54:32 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include <errno.h> |
| 18 | #include <fcntl.h> |
| 19 | #include <stdio.h> |
| 20 | #include <stdlib.h> |
| 21 | |
| 22 | #include <gtest/gtest.h> |
Dan Willemsen | e05dc6d | 2016-07-25 17:13:45 -0700 | [diff] [blame] | 23 | #include <linux/android/binder.h> |
Riley Andrews | dc9b148 | 2014-12-18 11:54:32 -0800 | [diff] [blame] | 24 | #include <binder/IBinder.h> |
| 25 | #include <sys/mman.h> |
| 26 | #include <poll.h> |
| 27 | |
| 28 | #define BINDER_DEV_NAME "/dev/binder" |
| 29 | |
| 30 | testing::Environment* binder_env; |
| 31 | |
| 32 | class BinderDriverInterfaceTestEnv : public ::testing::Environment { |
| 33 | virtual void SetUp() { |
| 34 | int ret; |
| 35 | uint32_t max_threads = 0; |
| 36 | |
Nick Kralevich | 0fe7ce3 | 2015-12-23 18:58:05 -0800 | [diff] [blame] | 37 | m_binderFd = open(BINDER_DEV_NAME, O_RDWR | O_NONBLOCK | O_CLOEXEC); |
Riley Andrews | dc9b148 | 2014-12-18 11:54:32 -0800 | [diff] [blame] | 38 | ASSERT_GE(m_binderFd, 0); |
| 39 | m_buffer = mmap(NULL, 64*1024, PROT_READ, MAP_SHARED, m_binderFd, 0); |
| 40 | ASSERT_NE(m_buffer, (void *)NULL); |
| 41 | ret = ioctl(m_binderFd, BINDER_SET_MAX_THREADS, &max_threads); |
| 42 | EXPECT_EQ(0, ret); |
| 43 | EnterLooper(); |
| 44 | } |
| 45 | virtual void TearDown() { |
| 46 | close(m_binderFd); |
| 47 | } |
| 48 | private: |
| 49 | int m_binderFd; |
| 50 | void *m_buffer; |
| 51 | public: |
| 52 | int getBinderFd(void) { |
| 53 | return m_binderFd; |
| 54 | } |
| 55 | void EnterLooper(void) { |
| 56 | int ret; |
| 57 | const uint32_t bc[] = { |
| 58 | BC_ENTER_LOOPER, |
| 59 | }; |
| 60 | struct binder_write_read bwr = binder_write_read(); |
Riley Andrews | 29d8cf9 | 2015-01-12 18:16:29 -0800 | [diff] [blame] | 61 | bwr.write_buffer = (uintptr_t)bc; |
Riley Andrews | dc9b148 | 2014-12-18 11:54:32 -0800 | [diff] [blame] | 62 | bwr.write_size = sizeof(bc); |
| 63 | ret = ioctl(m_binderFd, BINDER_WRITE_READ, &bwr); |
| 64 | EXPECT_EQ(0, ret); |
| 65 | if (ret < 0) { |
| 66 | EXPECT_EQ(0, errno); |
| 67 | } |
| 68 | EXPECT_EQ(sizeof(bc), bwr.write_consumed); |
| 69 | } |
| 70 | }; |
| 71 | |
| 72 | class BinderDriverInterfaceTest : public ::testing::Test { |
| 73 | public: |
| 74 | virtual void SetUp() { |
| 75 | m_binderFd = static_cast<BinderDriverInterfaceTestEnv *>(binder_env)->getBinderFd(); |
| 76 | } |
| 77 | virtual void TearDown() { |
| 78 | } |
| 79 | protected: |
Martijn Coenen | 2b39df7 | 2017-12-11 11:10:34 +0100 | [diff] [blame^] | 80 | /* The ioctl must either return 0, or if it doesn't errno should be accepted_errno */ |
| 81 | void binderTestIoctlSuccessOrError(int cmd, void *arg, int accepted_errno) { |
| 82 | int ret; |
| 83 | |
| 84 | ret = ioctl(m_binderFd, cmd, arg); |
| 85 | if (ret != 0) { |
| 86 | EXPECT_EQ(errno, accepted_errno); |
| 87 | } |
| 88 | } |
| 89 | |
Riley Andrews | dc9b148 | 2014-12-18 11:54:32 -0800 | [diff] [blame] | 90 | void binderTestIoctlRetErr2(int cmd, void *arg, int expect_ret, int expect_errno, int accept_errno) { |
| 91 | int ret; |
| 92 | |
| 93 | ret = ioctl(m_binderFd, cmd, arg); |
| 94 | EXPECT_EQ(expect_ret, ret); |
| 95 | if (ret < 0) { |
| 96 | if (errno != accept_errno) |
| 97 | EXPECT_EQ(expect_errno, errno); |
| 98 | } |
| 99 | } |
| 100 | void binderTestIoctlErr2(int cmd, void *arg, int expect_errno, int accept_errno) { |
| 101 | binderTestIoctlRetErr2(cmd, arg, -1, expect_errno, accept_errno); |
| 102 | } |
| 103 | void binderTestIoctlErr1(int cmd, void *arg, int expect_errno) { |
| 104 | binderTestIoctlErr2(cmd, arg, expect_errno, expect_errno); |
| 105 | } |
| 106 | void binderTestIoctl(int cmd, void *arg) { |
| 107 | binderTestIoctlRetErr2(cmd, arg, 0, 0, 0); |
| 108 | } |
| 109 | void binderTestIoctlUnimplemented(int cmd, void *arg) { |
| 110 | int ret; |
| 111 | |
| 112 | ret = ioctl(m_binderFd, cmd, arg); |
| 113 | if (ret < 0) { |
| 114 | /* Not currently implmented. Allow ret == -1, errno == EINVAL */ |
| 115 | EXPECT_EQ(-1, ret); |
| 116 | EXPECT_EQ(EINVAL, errno); |
| 117 | } |
| 118 | } |
| 119 | void binderTestReadEmpty(void) { |
| 120 | size_t i; |
| 121 | uint32_t br[32]; |
| 122 | struct binder_write_read bwr = binder_write_read(); |
| 123 | SCOPED_TRACE("TestReadEmpty"); |
Riley Andrews | 29d8cf9 | 2015-01-12 18:16:29 -0800 | [diff] [blame] | 124 | bwr.read_buffer = (uintptr_t)br; |
Riley Andrews | dc9b148 | 2014-12-18 11:54:32 -0800 | [diff] [blame] | 125 | bwr.read_size = sizeof(br); |
| 126 | binderTestIoctlErr1(BINDER_WRITE_READ, &bwr, EAGAIN); |
Riley Andrews | 50bcb00 | 2015-01-12 18:14:55 -0800 | [diff] [blame] | 127 | EXPECT_EQ(0u, bwr.read_consumed); |
Riley Andrews | dc9b148 | 2014-12-18 11:54:32 -0800 | [diff] [blame] | 128 | for (i = 0; i * sizeof(uint32_t) < bwr.read_consumed; i++) { |
| 129 | SCOPED_TRACE(testing::Message() << "i = " << i); |
| 130 | EXPECT_EQ(BR_NOOP, br[i]); |
| 131 | } |
| 132 | } |
| 133 | void binderWaitForReadData(int timeout_ms) { |
| 134 | int ret; |
| 135 | pollfd pfd = pollfd(); |
| 136 | |
| 137 | pfd.fd = m_binderFd; |
| 138 | pfd.events = POLLIN; |
| 139 | ret = poll(&pfd, 1, timeout_ms); |
| 140 | EXPECT_EQ(1, ret); |
| 141 | } |
| 142 | private: |
| 143 | int m_binderFd; |
| 144 | }; |
| 145 | |
| 146 | TEST_F(BinderDriverInterfaceTest, Version) { |
| 147 | struct binder_version version; |
| 148 | binderTestIoctl(BINDER_VERSION, &version); |
| 149 | ASSERT_EQ(BINDER_CURRENT_PROTOCOL_VERSION, version.protocol_version); |
| 150 | } |
| 151 | |
Sherry Yang | 2437b32 | 2017-08-29 16:07:57 -0700 | [diff] [blame] | 152 | TEST_F(BinderDriverInterfaceTest, OpenNoMmap) { |
| 153 | int binderFd = open(BINDER_DEV_NAME, O_RDWR | O_NONBLOCK | O_CLOEXEC); |
| 154 | ASSERT_GE(binderFd, 0); |
| 155 | close(binderFd); |
| 156 | } |
| 157 | |
Riley Andrews | dc9b148 | 2014-12-18 11:54:32 -0800 | [diff] [blame] | 158 | TEST_F(BinderDriverInterfaceTest, WriteReadNull) { |
| 159 | binderTestIoctlErr1(BINDER_WRITE_READ, NULL, EFAULT); |
| 160 | } |
| 161 | |
| 162 | TEST_F(BinderDriverInterfaceTest, SetIdleTimeoutNull) { |
| 163 | binderTestIoctlErr2(BINDER_SET_IDLE_TIMEOUT, NULL, EFAULT, EINVAL); |
| 164 | } |
| 165 | |
| 166 | TEST_F(BinderDriverInterfaceTest, SetMaxThreadsNull) { |
| 167 | binderTestIoctlErr2(BINDER_SET_MAX_THREADS, NULL, EFAULT, EINVAL); /* TODO: don't accept EINVAL */ |
| 168 | } |
| 169 | |
| 170 | TEST_F(BinderDriverInterfaceTest, SetIdlePriorityNull) { |
| 171 | binderTestIoctlErr2(BINDER_SET_IDLE_PRIORITY, NULL, EFAULT, EINVAL); |
| 172 | } |
| 173 | |
| 174 | TEST_F(BinderDriverInterfaceTest, VersionNull) { |
| 175 | binderTestIoctlErr2(BINDER_VERSION, NULL, EFAULT, EINVAL); /* TODO: don't accept EINVAL */ |
| 176 | } |
| 177 | |
| 178 | TEST_F(BinderDriverInterfaceTest, SetIdleTimeoutNoTest) { |
| 179 | int64_t idle_timeout = 100000; |
| 180 | binderTestIoctlUnimplemented(BINDER_SET_IDLE_TIMEOUT, &idle_timeout); |
| 181 | } |
| 182 | |
| 183 | TEST_F(BinderDriverInterfaceTest, SetMaxThreads) { |
| 184 | uint32_t max_threads = 0; |
| 185 | binderTestIoctl(BINDER_SET_MAX_THREADS, &max_threads); |
| 186 | } |
| 187 | |
| 188 | TEST_F(BinderDriverInterfaceTest, SetIdlePriorityNoTest) { |
| 189 | int idle_priority = 0; |
| 190 | binderTestIoctlUnimplemented(BINDER_SET_IDLE_PRIORITY, &idle_priority); |
| 191 | } |
| 192 | |
| 193 | TEST_F(BinderDriverInterfaceTest, SetContextMgrBusy) { |
| 194 | int32_t dummy = 0; |
| 195 | binderTestIoctlErr1(BINDER_SET_CONTEXT_MGR, &dummy, EBUSY); |
| 196 | } |
| 197 | |
| 198 | TEST_F(BinderDriverInterfaceTest, ThreadExit) { |
| 199 | int32_t dummy = 0; |
| 200 | binderTestIoctl(BINDER_THREAD_EXIT, &dummy); |
| 201 | static_cast<BinderDriverInterfaceTestEnv *>(binder_env)->EnterLooper(); |
| 202 | } |
| 203 | |
| 204 | TEST_F(BinderDriverInterfaceTest, WriteReadEmpty) { |
| 205 | struct binder_write_read bwr = binder_write_read(); |
| 206 | binderTestIoctl(BINDER_WRITE_READ, &bwr); |
| 207 | } |
| 208 | |
| 209 | TEST_F(BinderDriverInterfaceTest, Read) { |
| 210 | binderTestReadEmpty(); |
| 211 | } |
| 212 | |
| 213 | TEST_F(BinderDriverInterfaceTest, IncRefsAcquireReleaseDecRefs) { |
| 214 | const uint32_t bc[] = { |
| 215 | BC_INCREFS, |
| 216 | 0, |
| 217 | BC_ACQUIRE, |
| 218 | 0, |
| 219 | BC_RELEASE, |
| 220 | 0, |
| 221 | BC_DECREFS, |
| 222 | 0, |
| 223 | }; |
| 224 | struct binder_write_read bwr = binder_write_read(); |
Riley Andrews | 29d8cf9 | 2015-01-12 18:16:29 -0800 | [diff] [blame] | 225 | bwr.write_buffer = (uintptr_t)bc; |
Riley Andrews | dc9b148 | 2014-12-18 11:54:32 -0800 | [diff] [blame] | 226 | bwr.write_size = sizeof(bc); |
| 227 | binderTestIoctl(BINDER_WRITE_READ, &bwr); |
| 228 | EXPECT_EQ(sizeof(bc), bwr.write_consumed); |
| 229 | binderTestReadEmpty(); |
| 230 | } |
| 231 | |
| 232 | TEST_F(BinderDriverInterfaceTest, Transaction) { |
| 233 | binder_uintptr_t cookie = 1234; |
| 234 | struct { |
| 235 | uint32_t cmd1; |
| 236 | struct binder_transaction_data arg1; |
| 237 | } __attribute__((packed)) bc1 = { |
| 238 | .cmd1 = BC_TRANSACTION, |
| 239 | .arg1 = { |
| 240 | .target = { 0 }, |
| 241 | .cookie = 0, |
| 242 | .code = android::IBinder::PING_TRANSACTION, |
| 243 | .flags = 0, |
| 244 | .sender_pid = 0, |
| 245 | .sender_euid = 0, |
| 246 | .data_size = 0, |
| 247 | .offsets_size = 0, |
Wei Wang | 78f2a37 | 2016-10-20 23:18:17 -0700 | [diff] [blame] | 248 | .data = { |
| 249 | .ptr = {0, 0}, |
| 250 | }, |
Riley Andrews | dc9b148 | 2014-12-18 11:54:32 -0800 | [diff] [blame] | 251 | }, |
| 252 | }; |
| 253 | struct { |
| 254 | uint32_t cmd0; |
| 255 | uint32_t cmd1; |
| 256 | uint32_t cmd2; |
| 257 | binder_transaction_data arg2; |
| 258 | uint32_t pad[16]; |
| 259 | } __attribute__((packed)) br; |
| 260 | struct binder_write_read bwr = binder_write_read(); |
| 261 | |
Riley Andrews | 29d8cf9 | 2015-01-12 18:16:29 -0800 | [diff] [blame] | 262 | bwr.write_buffer = (uintptr_t)&bc1; |
Riley Andrews | dc9b148 | 2014-12-18 11:54:32 -0800 | [diff] [blame] | 263 | bwr.write_size = sizeof(bc1); |
Riley Andrews | 29d8cf9 | 2015-01-12 18:16:29 -0800 | [diff] [blame] | 264 | bwr.read_buffer = (uintptr_t)&br; |
Riley Andrews | dc9b148 | 2014-12-18 11:54:32 -0800 | [diff] [blame] | 265 | bwr.read_size = sizeof(br); |
| 266 | |
| 267 | { |
| 268 | SCOPED_TRACE("1st WriteRead"); |
Martijn Coenen | 2b39df7 | 2017-12-11 11:10:34 +0100 | [diff] [blame^] | 269 | binderTestIoctlSuccessOrError(BINDER_WRITE_READ, &bwr, EAGAIN); |
Riley Andrews | dc9b148 | 2014-12-18 11:54:32 -0800 | [diff] [blame] | 270 | } |
| 271 | EXPECT_EQ(sizeof(bc1), bwr.write_consumed); |
| 272 | if (bwr.read_consumed < offsetof(typeof(br), pad)) { |
| 273 | SCOPED_TRACE("2nd WriteRead"); |
| 274 | binderWaitForReadData(10000); |
| 275 | binderTestIoctl(BINDER_WRITE_READ, &bwr); |
| 276 | } |
| 277 | EXPECT_EQ(offsetof(typeof(br), pad), bwr.read_consumed); |
| 278 | if (bwr.read_consumed > offsetof(typeof(br), cmd0)) |
| 279 | EXPECT_EQ(BR_NOOP, br.cmd0); |
| 280 | if (bwr.read_consumed > offsetof(typeof(br), cmd1)) |
| 281 | EXPECT_EQ(BR_TRANSACTION_COMPLETE, br.cmd1); |
| 282 | if (bwr.read_consumed > offsetof(typeof(br), cmd2)) |
| 283 | EXPECT_EQ(BR_REPLY, br.cmd2); |
| 284 | if (bwr.read_consumed >= offsetof(typeof(br), pad)) { |
Riley Andrews | 50bcb00 | 2015-01-12 18:14:55 -0800 | [diff] [blame] | 285 | EXPECT_EQ(0u, br.arg2.target.ptr); |
| 286 | EXPECT_EQ(0u, br.arg2.cookie); |
| 287 | EXPECT_EQ(0u, br.arg2.code); |
| 288 | EXPECT_EQ(0u, br.arg2.flags); |
| 289 | EXPECT_EQ(0u, br.arg2.data_size); |
| 290 | EXPECT_EQ(0u, br.arg2.offsets_size); |
Riley Andrews | dc9b148 | 2014-12-18 11:54:32 -0800 | [diff] [blame] | 291 | |
| 292 | SCOPED_TRACE("3rd WriteRead"); |
| 293 | |
| 294 | binderTestReadEmpty(); |
| 295 | |
| 296 | struct { |
| 297 | uint32_t cmd1; |
| 298 | binder_uintptr_t arg1; |
| 299 | } __attribute__((packed)) bc2 = { |
| 300 | .cmd1 = BC_FREE_BUFFER, |
| 301 | .arg1 = br.arg2.data.ptr.buffer, |
| 302 | }; |
| 303 | |
Riley Andrews | 29d8cf9 | 2015-01-12 18:16:29 -0800 | [diff] [blame] | 304 | bwr.write_buffer = (uintptr_t)&bc2; |
Riley Andrews | dc9b148 | 2014-12-18 11:54:32 -0800 | [diff] [blame] | 305 | bwr.write_size = sizeof(bc2); |
| 306 | bwr.write_consumed = 0; |
| 307 | bwr.read_size = 0; |
| 308 | |
| 309 | binderTestIoctl(BINDER_WRITE_READ, &bwr); |
| 310 | EXPECT_EQ(sizeof(bc2), bwr.write_consumed); |
| 311 | } |
| 312 | binderTestReadEmpty(); |
| 313 | } |
| 314 | |
| 315 | TEST_F(BinderDriverInterfaceTest, RequestDeathNotification) { |
| 316 | binder_uintptr_t cookie = 1234; |
| 317 | struct { |
| 318 | uint32_t cmd0; |
| 319 | uint32_t arg0; |
| 320 | uint32_t cmd1; |
| 321 | struct binder_handle_cookie arg1; |
| 322 | uint32_t cmd2; |
| 323 | struct binder_handle_cookie arg2; |
| 324 | uint32_t cmd3; |
| 325 | uint32_t arg3; |
| 326 | } __attribute__((packed)) bc = { |
| 327 | .cmd0 = BC_INCREFS, |
| 328 | .arg0 = 0, |
| 329 | .cmd1 = BC_REQUEST_DEATH_NOTIFICATION, |
| 330 | .arg1 = { |
| 331 | .handle = 0, |
| 332 | .cookie = cookie, |
| 333 | }, |
| 334 | .cmd2 = BC_CLEAR_DEATH_NOTIFICATION, |
| 335 | .arg2 = { |
| 336 | .handle = 0, |
| 337 | .cookie = cookie, |
| 338 | }, |
| 339 | .cmd3 = BC_DECREFS, |
| 340 | .arg3 = 0, |
| 341 | }; |
| 342 | struct { |
| 343 | uint32_t cmd0; |
| 344 | uint32_t cmd1; |
| 345 | binder_uintptr_t arg1; |
| 346 | uint32_t pad[16]; |
| 347 | } __attribute__((packed)) br; |
| 348 | struct binder_write_read bwr = binder_write_read(); |
| 349 | |
Riley Andrews | 29d8cf9 | 2015-01-12 18:16:29 -0800 | [diff] [blame] | 350 | bwr.write_buffer = (uintptr_t)&bc; |
Riley Andrews | dc9b148 | 2014-12-18 11:54:32 -0800 | [diff] [blame] | 351 | bwr.write_size = sizeof(bc); |
Riley Andrews | 29d8cf9 | 2015-01-12 18:16:29 -0800 | [diff] [blame] | 352 | bwr.read_buffer = (uintptr_t)&br; |
Riley Andrews | dc9b148 | 2014-12-18 11:54:32 -0800 | [diff] [blame] | 353 | bwr.read_size = sizeof(br); |
| 354 | |
| 355 | binderTestIoctl(BINDER_WRITE_READ, &bwr); |
| 356 | EXPECT_EQ(sizeof(bc), bwr.write_consumed); |
| 357 | EXPECT_EQ(sizeof(br) - sizeof(br.pad), bwr.read_consumed); |
| 358 | EXPECT_EQ(BR_NOOP, br.cmd0); |
| 359 | EXPECT_EQ(BR_CLEAR_DEATH_NOTIFICATION_DONE, br.cmd1); |
| 360 | EXPECT_EQ(cookie, br.arg1); |
| 361 | binderTestReadEmpty(); |
| 362 | } |
| 363 | |
| 364 | int main(int argc, char **argv) { |
| 365 | ::testing::InitGoogleTest(&argc, argv); |
| 366 | |
| 367 | binder_env = AddGlobalTestEnvironment(new BinderDriverInterfaceTestEnv()); |
| 368 | |
| 369 | return RUN_ALL_TESTS(); |
| 370 | } |