Jorge Lucangeli Obes | a67bd6a | 2016-08-19 15:33:48 -0400 | [diff] [blame] | 1 | // libminijail_unittest.cpp |
| 2 | // Copyright (C) 2016 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 | // Test platform independent logic of Minijail using gtest. |
| 17 | |
| 18 | #include <errno.h> |
| 19 | |
Jorge Lucangeli Obes | e9740af | 2016-11-02 13:39:24 -0400 | [diff] [blame] | 20 | #include <fcntl.h> |
Jorge Lucangeli Obes | a67bd6a | 2016-08-19 15:33:48 -0400 | [diff] [blame] | 21 | #include <sys/types.h> |
Jorge Lucangeli Obes | e9740af | 2016-11-02 13:39:24 -0400 | [diff] [blame] | 22 | #include <sys/stat.h> |
Jorge Lucangeli Obes | a67bd6a | 2016-08-19 15:33:48 -0400 | [diff] [blame] | 23 | #include <sys/wait.h> |
Dylan Reid | 0412dcc | 2017-08-24 11:33:15 -0700 | [diff] [blame] | 24 | #include <unistd.h> |
Jorge Lucangeli Obes | a67bd6a | 2016-08-19 15:33:48 -0400 | [diff] [blame] | 25 | |
| 26 | #include <gtest/gtest.h> |
| 27 | |
| 28 | #include "libminijail.h" |
| 29 | #include "libminijail-private.h" |
| 30 | #include "util.h" |
| 31 | |
Mike Frysinger | b2c12d1 | 2017-09-29 21:18:59 -0400 | [diff] [blame] | 32 | namespace { |
| 33 | |
Jorge Lucangeli Obes | e9740af | 2016-11-02 13:39:24 -0400 | [diff] [blame] | 34 | #if defined(__ANDROID__) |
Mike Frysinger | b2c12d1 | 2017-09-29 21:18:59 -0400 | [diff] [blame] | 35 | # define ROOT_PREFIX "/system" |
Jorge Lucangeli Obes | e9740af | 2016-11-02 13:39:24 -0400 | [diff] [blame] | 36 | #else |
Mike Frysinger | b2c12d1 | 2017-09-29 21:18:59 -0400 | [diff] [blame] | 37 | # define ROOT_PREFIX "" |
Jorge Lucangeli Obes | e9740af | 2016-11-02 13:39:24 -0400 | [diff] [blame] | 38 | #endif |
| 39 | |
Mike Frysinger | b2c12d1 | 2017-09-29 21:18:59 -0400 | [diff] [blame] | 40 | const char kShellPath[] = ROOT_PREFIX "/bin/sh"; |
| 41 | const char kCatPath[] = ROOT_PREFIX "/bin/cat"; |
| 42 | |
| 43 | } // namespace |
| 44 | |
Jorge Lucangeli Obes | a67bd6a | 2016-08-19 15:33:48 -0400 | [diff] [blame] | 45 | /* Prototypes needed only by test. */ |
Martin Pelikán | ab9eb44 | 2017-01-25 11:53:58 +1100 | [diff] [blame] | 46 | size_t minijail_get_tmpfs_size(const struct minijail *); |
Jorge Lucangeli Obes | a67bd6a | 2016-08-19 15:33:48 -0400 | [diff] [blame] | 47 | |
| 48 | /* Silence unused variable warnings. */ |
| 49 | TEST(silence, silence_unused) { |
| 50 | EXPECT_STREQ(kLdPreloadEnvVar, kLdPreloadEnvVar); |
| 51 | EXPECT_STREQ(kFdEnvVar, kFdEnvVar); |
| 52 | EXPECT_STRNE(kFdEnvVar, kLdPreloadEnvVar); |
| 53 | } |
| 54 | |
| 55 | TEST(consumebytes, zero) { |
| 56 | char buf[1024]; |
| 57 | size_t len = sizeof(buf); |
| 58 | char *pos = &buf[0]; |
Jorge Lucangeli Obes | e9740af | 2016-11-02 13:39:24 -0400 | [diff] [blame] | 59 | EXPECT_NE(nullptr, consumebytes(0, &pos, &len)); |
Jorge Lucangeli Obes | a67bd6a | 2016-08-19 15:33:48 -0400 | [diff] [blame] | 60 | EXPECT_EQ(&buf[0], pos); |
| 61 | EXPECT_EQ(sizeof(buf), len); |
| 62 | } |
| 63 | |
| 64 | TEST(consumebytes, exact) { |
| 65 | char buf[1024]; |
| 66 | size_t len = sizeof(buf); |
| 67 | char *pos = &buf[0]; |
| 68 | /* One past the end since it consumes the whole buffer. */ |
| 69 | char *end = &buf[sizeof(buf)]; |
Jorge Lucangeli Obes | e9740af | 2016-11-02 13:39:24 -0400 | [diff] [blame] | 70 | EXPECT_NE(nullptr, consumebytes(len, &pos, &len)); |
Jorge Lucangeli Obes | a67bd6a | 2016-08-19 15:33:48 -0400 | [diff] [blame] | 71 | EXPECT_EQ((size_t)0, len); |
| 72 | EXPECT_EQ(end, pos); |
| 73 | } |
| 74 | |
| 75 | TEST(consumebytes, half) { |
| 76 | char buf[1024]; |
| 77 | size_t len = sizeof(buf); |
| 78 | char *pos = &buf[0]; |
| 79 | /* One past the end since it consumes the whole buffer. */ |
| 80 | char *end = &buf[sizeof(buf) / 2]; |
Jorge Lucangeli Obes | e9740af | 2016-11-02 13:39:24 -0400 | [diff] [blame] | 81 | EXPECT_NE(nullptr, consumebytes(len / 2, &pos, &len)); |
Jorge Lucangeli Obes | a67bd6a | 2016-08-19 15:33:48 -0400 | [diff] [blame] | 82 | EXPECT_EQ(sizeof(buf) / 2, len); |
| 83 | EXPECT_EQ(end, pos); |
| 84 | } |
| 85 | |
| 86 | TEST(consumebytes, toolong) { |
| 87 | char buf[1024]; |
| 88 | size_t len = sizeof(buf); |
| 89 | char *pos = &buf[0]; |
| 90 | /* One past the end since it consumes the whole buffer. */ |
Jorge Lucangeli Obes | e9740af | 2016-11-02 13:39:24 -0400 | [diff] [blame] | 91 | EXPECT_EQ(nullptr, consumebytes(len + 1, &pos, &len)); |
Jorge Lucangeli Obes | a67bd6a | 2016-08-19 15:33:48 -0400 | [diff] [blame] | 92 | EXPECT_EQ(sizeof(buf), len); |
| 93 | EXPECT_EQ(&buf[0], pos); |
| 94 | } |
| 95 | |
| 96 | TEST(consumestr, zero) { |
| 97 | char buf[1024]; |
| 98 | size_t len = 0; |
| 99 | char *pos = &buf[0]; |
| 100 | memset(buf, 0xff, sizeof(buf)); |
Jorge Lucangeli Obes | e9740af | 2016-11-02 13:39:24 -0400 | [diff] [blame] | 101 | EXPECT_EQ(nullptr, consumestr(&pos, &len)); |
Jorge Lucangeli Obes | a67bd6a | 2016-08-19 15:33:48 -0400 | [diff] [blame] | 102 | EXPECT_EQ((size_t)0, len); |
| 103 | EXPECT_EQ(&buf[0], pos); |
| 104 | } |
| 105 | |
| 106 | TEST(consumestr, nonul) { |
| 107 | char buf[1024]; |
| 108 | size_t len = sizeof(buf); |
| 109 | char *pos = &buf[0]; |
| 110 | memset(buf, 0xff, sizeof(buf)); |
Jorge Lucangeli Obes | e9740af | 2016-11-02 13:39:24 -0400 | [diff] [blame] | 111 | EXPECT_EQ(nullptr, consumestr(&pos, &len)); |
Jorge Lucangeli Obes | a67bd6a | 2016-08-19 15:33:48 -0400 | [diff] [blame] | 112 | EXPECT_EQ(sizeof(buf), len); |
| 113 | EXPECT_EQ(&buf[0], pos); |
| 114 | } |
| 115 | |
| 116 | TEST(consumestr, full) { |
| 117 | char buf[1024]; |
| 118 | size_t len = sizeof(buf); |
| 119 | char *pos = &buf[0]; |
| 120 | memset(buf, 0xff, sizeof(buf)); |
| 121 | buf[sizeof(buf)-1] = '\0'; |
| 122 | EXPECT_EQ((void *)buf, consumestr(&pos, &len)); |
| 123 | EXPECT_EQ((size_t)0, len); |
| 124 | EXPECT_EQ(&buf[sizeof(buf)], pos); |
| 125 | } |
| 126 | |
| 127 | TEST(consumestr, trailing_nul) { |
| 128 | char buf[1024]; |
| 129 | size_t len = sizeof(buf) - 1; |
| 130 | char *pos = &buf[0]; |
| 131 | memset(buf, 0xff, sizeof(buf)); |
| 132 | buf[sizeof(buf)-1] = '\0'; |
Jorge Lucangeli Obes | e9740af | 2016-11-02 13:39:24 -0400 | [diff] [blame] | 133 | EXPECT_EQ(nullptr, consumestr(&pos, &len)); |
Jorge Lucangeli Obes | a67bd6a | 2016-08-19 15:33:48 -0400 | [diff] [blame] | 134 | EXPECT_EQ(sizeof(buf) - 1, len); |
| 135 | EXPECT_EQ(&buf[0], pos); |
| 136 | } |
| 137 | |
| 138 | class MarshalTest : public ::testing::Test { |
| 139 | protected: |
| 140 | virtual void SetUp() { |
| 141 | m_ = minijail_new(); |
| 142 | j_ = minijail_new(); |
| 143 | size_ = minijail_size(m_); |
| 144 | } |
| 145 | virtual void TearDown() { |
| 146 | minijail_destroy(m_); |
| 147 | minijail_destroy(j_); |
| 148 | } |
| 149 | |
| 150 | char buf_[4096]; |
| 151 | struct minijail *m_; |
| 152 | struct minijail *j_; |
| 153 | size_t size_; |
| 154 | }; |
| 155 | |
| 156 | TEST_F(MarshalTest, empty) { |
| 157 | ASSERT_EQ(0, minijail_marshal(m_, buf_, sizeof(buf_))); |
| 158 | EXPECT_EQ(0, minijail_unmarshal(j_, buf_, size_)); |
| 159 | } |
| 160 | |
| 161 | TEST_F(MarshalTest, 0xff) { |
| 162 | memset(buf_, 0xff, sizeof(buf_)); |
| 163 | /* Should fail on the first consumestr since a NUL will never be found. */ |
| 164 | EXPECT_EQ(-EINVAL, minijail_unmarshal(j_, buf_, sizeof(buf_))); |
| 165 | } |
| 166 | |
| 167 | TEST(Test, minijail_run_pid_pipes_no_preload) { |
| 168 | pid_t pid; |
| 169 | int child_stdin, child_stdout, child_stderr; |
| 170 | int mj_run_ret; |
| 171 | ssize_t write_ret, read_ret; |
| 172 | const size_t buf_len = 128; |
| 173 | char buf[buf_len]; |
| 174 | int status; |
Jorge Lucangeli Obes | a67bd6a | 2016-08-19 15:33:48 -0400 | [diff] [blame] | 175 | char teststr[] = "test\n"; |
| 176 | size_t teststr_len = strlen(teststr); |
| 177 | char *argv[4]; |
| 178 | |
| 179 | struct minijail *j = minijail_new(); |
| 180 | |
Mike Frysinger | b2c12d1 | 2017-09-29 21:18:59 -0400 | [diff] [blame] | 181 | argv[0] = (char*)kCatPath; |
Jorge Lucangeli Obes | a67bd6a | 2016-08-19 15:33:48 -0400 | [diff] [blame] | 182 | argv[1] = NULL; |
| 183 | mj_run_ret = minijail_run_pid_pipes_no_preload(j, argv[0], argv, |
| 184 | &pid, |
| 185 | &child_stdin, &child_stdout, |
| 186 | NULL); |
| 187 | EXPECT_EQ(mj_run_ret, 0); |
| 188 | |
| 189 | write_ret = write(child_stdin, teststr, teststr_len); |
| 190 | EXPECT_EQ(write_ret, (int)teststr_len); |
| 191 | |
| 192 | read_ret = read(child_stdout, buf, 8); |
| 193 | EXPECT_EQ(read_ret, (int)teststr_len); |
| 194 | buf[teststr_len] = 0; |
| 195 | EXPECT_EQ(strcmp(buf, teststr), 0); |
| 196 | |
| 197 | EXPECT_EQ(kill(pid, SIGTERM), 0); |
| 198 | waitpid(pid, &status, 0); |
| 199 | ASSERT_TRUE(WIFSIGNALED(status)); |
| 200 | EXPECT_EQ(WTERMSIG(status), SIGTERM); |
| 201 | |
Jorge Lucangeli Obes | e9740af | 2016-11-02 13:39:24 -0400 | [diff] [blame] | 202 | argv[0] = (char*)kShellPath; |
Jorge Lucangeli Obes | a67bd6a | 2016-08-19 15:33:48 -0400 | [diff] [blame] | 203 | argv[1] = "-c"; |
| 204 | argv[2] = "echo test >&2"; |
| 205 | argv[3] = NULL; |
| 206 | mj_run_ret = minijail_run_pid_pipes_no_preload(j, argv[0], argv, &pid, |
| 207 | &child_stdin, &child_stdout, |
| 208 | &child_stderr); |
| 209 | EXPECT_EQ(mj_run_ret, 0); |
| 210 | |
| 211 | read_ret = read(child_stderr, buf, buf_len); |
| 212 | EXPECT_GE(read_ret, (int)teststr_len); |
| 213 | |
| 214 | waitpid(pid, &status, 0); |
| 215 | ASSERT_TRUE(WIFEXITED(status)); |
| 216 | EXPECT_EQ(WEXITSTATUS(status), 0); |
| 217 | |
| 218 | minijail_destroy(j); |
| 219 | } |
Jorge Lucangeli Obes | e9740af | 2016-11-02 13:39:24 -0400 | [diff] [blame] | 220 | |
| 221 | TEST(Test, test_minijail_no_fd_leaks) { |
| 222 | pid_t pid; |
| 223 | int child_stdout; |
| 224 | int mj_run_ret; |
| 225 | ssize_t read_ret; |
| 226 | const size_t buf_len = 128; |
| 227 | char buf[buf_len]; |
| 228 | char script[buf_len]; |
| 229 | int status; |
| 230 | char *argv[4]; |
| 231 | |
| 232 | int dev_null = open("/dev/null", O_RDONLY); |
| 233 | ASSERT_NE(dev_null, -1); |
| 234 | snprintf(script, |
| 235 | sizeof(script), |
| 236 | "[ -e /proc/self/fd/%d ] && echo yes || echo no", |
| 237 | dev_null); |
| 238 | |
| 239 | struct minijail *j = minijail_new(); |
| 240 | |
| 241 | argv[0] = (char*)kShellPath; |
| 242 | argv[1] = "-c"; |
| 243 | argv[2] = script; |
| 244 | argv[3] = NULL; |
| 245 | mj_run_ret = minijail_run_pid_pipes_no_preload( |
| 246 | j, argv[0], argv, &pid, NULL, &child_stdout, NULL); |
| 247 | EXPECT_EQ(mj_run_ret, 0); |
| 248 | |
| 249 | read_ret = read(child_stdout, buf, buf_len); |
| 250 | EXPECT_GE(read_ret, 0); |
| 251 | buf[read_ret] = '\0'; |
| 252 | EXPECT_STREQ(buf, "yes\n"); |
| 253 | |
| 254 | waitpid(pid, &status, 0); |
| 255 | ASSERT_TRUE(WIFEXITED(status)); |
| 256 | EXPECT_EQ(WEXITSTATUS(status), 0); |
| 257 | |
| 258 | minijail_close_open_fds(j); |
| 259 | mj_run_ret = minijail_run_pid_pipes_no_preload( |
| 260 | j, argv[0], argv, &pid, NULL, &child_stdout, NULL); |
| 261 | EXPECT_EQ(mj_run_ret, 0); |
| 262 | |
| 263 | read_ret = read(child_stdout, buf, buf_len); |
| 264 | EXPECT_GE(read_ret, 0); |
| 265 | buf[read_ret] = '\0'; |
| 266 | EXPECT_STREQ(buf, "no\n"); |
| 267 | |
| 268 | waitpid(pid, &status, 0); |
| 269 | ASSERT_TRUE(WIFEXITED(status)); |
| 270 | EXPECT_EQ(WEXITSTATUS(status), 0); |
| 271 | |
| 272 | minijail_destroy(j); |
| 273 | |
| 274 | close(dev_null); |
| 275 | } |
Martin Pelikán | ab9eb44 | 2017-01-25 11:53:58 +1100 | [diff] [blame] | 276 | |
Dylan Reid | 0412dcc | 2017-08-24 11:33:15 -0700 | [diff] [blame] | 277 | TEST(Test, test_minijail_fork) { |
| 278 | pid_t mj_fork_ret; |
| 279 | int status; |
| 280 | int pipe_fds[2]; |
| 281 | ssize_t pid_size = sizeof(mj_fork_ret); |
| 282 | |
| 283 | struct minijail *j = minijail_new(); |
| 284 | |
| 285 | ASSERT_EQ(pipe(pipe_fds), 0); |
| 286 | |
| 287 | mj_fork_ret = minijail_fork(j); |
| 288 | ASSERT_GE(mj_fork_ret, 0); |
| 289 | if (mj_fork_ret == 0) { |
| 290 | pid_t pid_in_parent; |
| 291 | // Wait for the parent to tell us the pid in the parent namespace. |
| 292 | EXPECT_EQ(read(pipe_fds[0], &pid_in_parent, pid_size), pid_size); |
| 293 | EXPECT_EQ(pid_in_parent, getpid()); |
| 294 | exit(0); |
| 295 | } |
| 296 | |
| 297 | EXPECT_EQ(write(pipe_fds[1], &mj_fork_ret, pid_size), pid_size); |
| 298 | waitpid(mj_fork_ret, &status, 0); |
| 299 | ASSERT_TRUE(WIFEXITED(status)); |
| 300 | EXPECT_EQ(WEXITSTATUS(status), 0); |
| 301 | |
| 302 | minijail_destroy(j); |
| 303 | } |
| 304 | |
Luis Hector Chavez | e0ba4ce | 2017-07-20 15:12:22 -0700 | [diff] [blame] | 305 | static int early_exit(void* payload) { |
| 306 | exit(static_cast<int>(reinterpret_cast<intptr_t>(payload))); |
| 307 | } |
| 308 | |
| 309 | TEST(Test, test_minijail_callback) { |
| 310 | pid_t pid; |
| 311 | int mj_run_ret; |
| 312 | int status; |
Luis Hector Chavez | e0ba4ce | 2017-07-20 15:12:22 -0700 | [diff] [blame] | 313 | char *argv[2]; |
| 314 | int exit_code = 42; |
| 315 | |
| 316 | struct minijail *j = minijail_new(); |
| 317 | |
| 318 | status = |
| 319 | minijail_add_hook(j, &early_exit, reinterpret_cast<void *>(exit_code), |
| 320 | MINIJAIL_HOOK_EVENT_PRE_DROP_CAPS); |
| 321 | EXPECT_EQ(status, 0); |
| 322 | |
Mike Frysinger | b2c12d1 | 2017-09-29 21:18:59 -0400 | [diff] [blame] | 323 | argv[0] = (char*)kCatPath; |
Luis Hector Chavez | e0ba4ce | 2017-07-20 15:12:22 -0700 | [diff] [blame] | 324 | argv[1] = NULL; |
| 325 | mj_run_ret = minijail_run_pid_pipes_no_preload(j, argv[0], argv, &pid, NULL, |
| 326 | NULL, NULL); |
| 327 | EXPECT_EQ(mj_run_ret, 0); |
| 328 | |
| 329 | status = minijail_wait(j); |
| 330 | EXPECT_EQ(status, exit_code); |
| 331 | |
| 332 | minijail_destroy(j); |
| 333 | } |
| 334 | |
Luis Hector Chavez | 1617f63 | 2017-08-01 18:32:30 -0700 | [diff] [blame] | 335 | TEST(Test, test_minijail_preserve_fd) { |
| 336 | int mj_run_ret; |
| 337 | int status; |
Luis Hector Chavez | 1617f63 | 2017-08-01 18:32:30 -0700 | [diff] [blame] | 338 | char *argv[2]; |
| 339 | char teststr[] = "test\n"; |
| 340 | size_t teststr_len = strlen(teststr); |
| 341 | int read_pipe[2]; |
| 342 | int write_pipe[2]; |
| 343 | char buf[1024]; |
| 344 | |
| 345 | struct minijail *j = minijail_new(); |
| 346 | |
| 347 | status = pipe(read_pipe); |
| 348 | ASSERT_EQ(status, 0); |
| 349 | status = pipe(write_pipe); |
| 350 | ASSERT_EQ(status, 0); |
| 351 | |
| 352 | status = minijail_preserve_fd(j, write_pipe[0], STDIN_FILENO); |
| 353 | ASSERT_EQ(status, 0); |
| 354 | status = minijail_preserve_fd(j, read_pipe[1], STDOUT_FILENO); |
| 355 | ASSERT_EQ(status, 0); |
| 356 | minijail_close_open_fds(j); |
| 357 | |
Mike Frysinger | b2c12d1 | 2017-09-29 21:18:59 -0400 | [diff] [blame] | 358 | argv[0] = (char*)kCatPath; |
Luis Hector Chavez | 1617f63 | 2017-08-01 18:32:30 -0700 | [diff] [blame] | 359 | argv[1] = NULL; |
| 360 | mj_run_ret = minijail_run_no_preload(j, argv[0], argv); |
| 361 | EXPECT_EQ(mj_run_ret, 0); |
| 362 | |
| 363 | close(write_pipe[0]); |
| 364 | status = write(write_pipe[1], teststr, teststr_len); |
| 365 | EXPECT_EQ(status, (int)teststr_len); |
| 366 | close(write_pipe[1]); |
| 367 | |
| 368 | close(read_pipe[1]); |
| 369 | status = read(read_pipe[0], buf, 8); |
| 370 | EXPECT_EQ(status, (int)teststr_len); |
| 371 | buf[teststr_len] = 0; |
| 372 | EXPECT_EQ(strcmp(buf, teststr), 0); |
| 373 | |
| 374 | status = minijail_wait(j); |
| 375 | EXPECT_EQ(status, 0); |
| 376 | |
| 377 | minijail_destroy(j); |
| 378 | } |
| 379 | |
Mike Frysinger | 780aef7 | 2017-10-03 01:39:52 -0400 | [diff] [blame] | 380 | namespace { |
| 381 | |
| 382 | // Tests that require userns access. |
| 383 | // Android unit tests don't currently support entering user namespaces as |
| 384 | // unprivileged users due to having an older kernel. Chrome OS unit tests |
| 385 | // don't support it either due to being in a chroot environment (see man 2 |
| 386 | // clone for more information about failure modes with the CLONE_NEWUSER flag). |
| 387 | class NamespaceTest : public ::testing::Test { |
| 388 | protected: |
| 389 | static void SetUpTestCase() { |
| 390 | userns_supported_ = UsernsSupported(); |
| 391 | } |
| 392 | |
| 393 | // Whether userns is supported. |
| 394 | static bool userns_supported_; |
| 395 | |
| 396 | static bool UsernsSupported() { |
| 397 | pid_t pid = fork(); |
| 398 | if (pid == -1) |
| 399 | pdie("could not fork"); |
| 400 | |
| 401 | if (pid == 0) |
| 402 | _exit(unshare(CLONE_NEWUSER) == 0 ? 0 : 1); |
| 403 | |
| 404 | int status; |
| 405 | if (waitpid(pid, &status, 0) < 0) |
| 406 | pdie("could not wait"); |
| 407 | |
| 408 | if (!WIFEXITED(status)) |
| 409 | die("child did not exit properly: %#x", status); |
| 410 | |
| 411 | bool ret = WEXITSTATUS(status) == 0; |
| 412 | if (!ret) |
| 413 | warn("Skipping userns related tests"); |
| 414 | return ret; |
| 415 | } |
| 416 | }; |
| 417 | |
| 418 | bool NamespaceTest::userns_supported_; |
| 419 | |
| 420 | } // namespace |
| 421 | |
| 422 | TEST_F(NamespaceTest, test_tmpfs_userns) { |
Luis Hector Chavez | 7132355 | 2017-09-05 09:17:22 -0700 | [diff] [blame] | 423 | int mj_run_ret; |
| 424 | int status; |
| 425 | char *argv[4]; |
| 426 | char uidmap[128], gidmap[128]; |
| 427 | constexpr uid_t kTargetUid = 1000; // Any non-zero value will do. |
| 428 | constexpr gid_t kTargetGid = 1000; |
| 429 | |
Mike Frysinger | 780aef7 | 2017-10-03 01:39:52 -0400 | [diff] [blame] | 430 | if (!userns_supported_) { |
| 431 | SUCCEED(); |
| 432 | return; |
| 433 | } |
| 434 | |
Luis Hector Chavez | 7132355 | 2017-09-05 09:17:22 -0700 | [diff] [blame] | 435 | struct minijail *j = minijail_new(); |
| 436 | |
| 437 | minijail_namespace_pids(j); |
| 438 | minijail_namespace_vfs(j); |
| 439 | minijail_mount_tmp(j); |
| 440 | minijail_run_as_init(j); |
| 441 | |
| 442 | // Perform userns mapping. |
| 443 | minijail_namespace_user(j); |
| 444 | snprintf(uidmap, sizeof(uidmap), "%d %d 1", kTargetUid, getuid()); |
| 445 | snprintf(gidmap, sizeof(gidmap), "%d %d 1", kTargetGid, getgid()); |
| 446 | minijail_change_uid(j, kTargetUid); |
| 447 | minijail_change_gid(j, kTargetGid); |
| 448 | minijail_uidmap(j, uidmap); |
| 449 | minijail_gidmap(j, gidmap); |
| 450 | minijail_namespace_user_disable_setgroups(j); |
| 451 | |
| 452 | argv[0] = (char*)kShellPath; |
| 453 | argv[1] = "-c"; |
| 454 | argv[2] = "exec touch /tmp/foo"; |
| 455 | argv[3] = NULL; |
| 456 | mj_run_ret = minijail_run_no_preload(j, argv[0], argv); |
| 457 | EXPECT_EQ(mj_run_ret, 0); |
| 458 | |
| 459 | status = minijail_wait(j); |
| 460 | EXPECT_EQ(status, 0); |
| 461 | |
| 462 | minijail_destroy(j); |
| 463 | } |
| 464 | |
Martin Pelikán | ab9eb44 | 2017-01-25 11:53:58 +1100 | [diff] [blame] | 465 | TEST(Test, parse_size) { |
| 466 | size_t size; |
| 467 | |
| 468 | ASSERT_EQ(0, parse_size(&size, "42")); |
| 469 | ASSERT_EQ(42U, size); |
| 470 | |
| 471 | ASSERT_EQ(0, parse_size(&size, "16K")); |
| 472 | ASSERT_EQ(16384U, size); |
| 473 | |
| 474 | ASSERT_EQ(0, parse_size(&size, "1M")); |
| 475 | ASSERT_EQ(1024U * 1024, size); |
| 476 | |
| 477 | uint64_t gigabyte = 1024ULL * 1024 * 1024; |
| 478 | ASSERT_EQ(0, parse_size(&size, "3G")); |
| 479 | ASSERT_EQ(3U, size / gigabyte); |
| 480 | ASSERT_EQ(0U, size % gigabyte); |
| 481 | |
| 482 | ASSERT_EQ(0, parse_size(&size, "4294967294")); |
| 483 | ASSERT_EQ(3U, size / gigabyte); |
| 484 | ASSERT_EQ(gigabyte - 2, size % gigabyte); |
| 485 | |
| 486 | #if __WORDSIZE == 64 |
| 487 | uint64_t exabyte = gigabyte * 1024 * 1024 * 1024; |
| 488 | ASSERT_EQ(0, parse_size(&size, "9E")); |
| 489 | ASSERT_EQ(9U, size / exabyte); |
| 490 | ASSERT_EQ(0U, size % exabyte); |
| 491 | |
| 492 | ASSERT_EQ(0, parse_size(&size, "15E")); |
| 493 | ASSERT_EQ(15U, size / exabyte); |
| 494 | ASSERT_EQ(0U, size % exabyte); |
| 495 | |
| 496 | ASSERT_EQ(0, parse_size(&size, "18446744073709551614")); |
| 497 | ASSERT_EQ(15U, size / exabyte); |
| 498 | ASSERT_EQ(exabyte - 2, size % exabyte); |
| 499 | |
| 500 | ASSERT_EQ(-ERANGE, parse_size(&size, "16E")); |
| 501 | ASSERT_EQ(-ERANGE, parse_size(&size, "19E")); |
Chirantan Ekbote | 8c13d10 | 2017-02-09 12:33:19 -0800 | [diff] [blame] | 502 | ASSERT_EQ(-EINVAL, parse_size(&size, "7GTPE")); |
Martin Pelikán | ab9eb44 | 2017-01-25 11:53:58 +1100 | [diff] [blame] | 503 | #elif __WORDSIZE == 32 |
| 504 | ASSERT_EQ(-ERANGE, parse_size(&size, "5G")); |
| 505 | ASSERT_EQ(-ERANGE, parse_size(&size, "9G")); |
| 506 | ASSERT_EQ(-ERANGE, parse_size(&size, "9E")); |
Chirantan Ekbote | 8c13d10 | 2017-02-09 12:33:19 -0800 | [diff] [blame] | 507 | ASSERT_EQ(-ERANGE, parse_size(&size, "7GTPE")); |
Martin Pelikán | ab9eb44 | 2017-01-25 11:53:58 +1100 | [diff] [blame] | 508 | #endif |
| 509 | |
| 510 | ASSERT_EQ(-EINVAL, parse_size(&size, "")); |
| 511 | ASSERT_EQ(-EINVAL, parse_size(&size, "14u")); |
| 512 | ASSERT_EQ(-EINVAL, parse_size(&size, "14.2G")); |
Martin Pelikán | ab9eb44 | 2017-01-25 11:53:58 +1100 | [diff] [blame] | 513 | ASSERT_EQ(-EINVAL, parse_size(&size, "-1G")); |
| 514 | ASSERT_EQ(-EINVAL, parse_size(&size, "; /bin/rm -- ")); |
| 515 | } |