1 /*
2 * Copyright (C) 2012 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 <gtest/gtest.h>
18
19 #include "BionicDeathTest.h"
20 #include "TemporaryFile.h"
21 #include "utils.h"
22
23 #include <errno.h>
24 #include <libgen.h>
25 #include <limits.h>
26 #include <pthread.h>
27 #include <stdint.h>
28 #include <stdlib.h>
29 #include <fcntl.h>
30 #include <sys/types.h>
31 #include <sys/wait.h>
32
33 // The random number generator tests all set the seed, get four values, reset the seed and check
34 // that they get the first two values repeated, and then reset the seed and check two more values
35 // to rule out the possibility that we're just going round a cycle of four values.
36 // TODO: factor this out.
37
TEST(stdlib,drand48)38 TEST(stdlib, drand48) {
39 srand48(0x01020304);
40 EXPECT_DOUBLE_EQ(0.65619299195623526, drand48());
41 EXPECT_DOUBLE_EQ(0.18522597229772941, drand48());
42 EXPECT_DOUBLE_EQ(0.42015087072844537, drand48());
43 EXPECT_DOUBLE_EQ(0.061637783047395089, drand48());
44 srand48(0x01020304);
45 EXPECT_DOUBLE_EQ(0.65619299195623526, drand48());
46 EXPECT_DOUBLE_EQ(0.18522597229772941, drand48());
47 srand48(0x01020304);
48 EXPECT_DOUBLE_EQ(0.65619299195623526, drand48());
49 EXPECT_DOUBLE_EQ(0.18522597229772941, drand48());
50 }
51
TEST(stdlib,erand48)52 TEST(stdlib, erand48) {
53 const unsigned short seed[3] = { 0x330e, 0xabcd, 0x1234 };
54 unsigned short xsubi[3];
55 memcpy(xsubi, seed, sizeof(seed));
56 EXPECT_DOUBLE_EQ(0.39646477376027534, erand48(xsubi));
57 EXPECT_DOUBLE_EQ(0.84048536941142515, erand48(xsubi));
58 EXPECT_DOUBLE_EQ(0.35333609724524351, erand48(xsubi));
59 EXPECT_DOUBLE_EQ(0.44658343479654405, erand48(xsubi));
60 memcpy(xsubi, seed, sizeof(seed));
61 EXPECT_DOUBLE_EQ(0.39646477376027534, erand48(xsubi));
62 EXPECT_DOUBLE_EQ(0.84048536941142515, erand48(xsubi));
63 memcpy(xsubi, seed, sizeof(seed));
64 EXPECT_DOUBLE_EQ(0.39646477376027534, erand48(xsubi));
65 EXPECT_DOUBLE_EQ(0.84048536941142515, erand48(xsubi));
66 }
67
TEST(stdlib,lcong48)68 TEST(stdlib, lcong48) {
69 unsigned short p[7] = { 0x0102, 0x0304, 0x0506, 0x0708, 0x090a, 0x0b0c, 0x0d0e };
70 lcong48(p);
71 EXPECT_EQ(1531389981, lrand48());
72 EXPECT_EQ(1598801533, lrand48());
73 EXPECT_EQ(2080534853, lrand48());
74 EXPECT_EQ(1102488897, lrand48());
75 lcong48(p);
76 EXPECT_EQ(1531389981, lrand48());
77 EXPECT_EQ(1598801533, lrand48());
78 lcong48(p);
79 EXPECT_EQ(1531389981, lrand48());
80 EXPECT_EQ(1598801533, lrand48());
81 }
82
TEST(stdlib,lrand48)83 TEST(stdlib, lrand48) {
84 srand48(0x01020304);
85 EXPECT_EQ(1409163720, lrand48());
86 EXPECT_EQ(397769746, lrand48());
87 EXPECT_EQ(902267124, lrand48());
88 EXPECT_EQ(132366131, lrand48());
89 srand48(0x01020304);
90 EXPECT_EQ(1409163720, lrand48());
91 EXPECT_EQ(397769746, lrand48());
92 srand48(0x01020304);
93 EXPECT_EQ(1409163720, lrand48());
94 EXPECT_EQ(397769746, lrand48());
95 }
96
TEST(stdlib,random)97 TEST(stdlib, random) {
98 srandom(0x01020304);
99 EXPECT_EQ(55436735, random());
100 EXPECT_EQ(1399865117, random());
101 EXPECT_EQ(2032643283, random());
102 EXPECT_EQ(571329216, random());
103 srandom(0x01020304);
104 EXPECT_EQ(55436735, random());
105 EXPECT_EQ(1399865117, random());
106 srandom(0x01020304);
107 EXPECT_EQ(55436735, random());
108 EXPECT_EQ(1399865117, random());
109 }
110
TEST(stdlib,rand)111 TEST(stdlib, rand) {
112 srand(0x01020304);
113 EXPECT_EQ(55436735, rand());
114 EXPECT_EQ(1399865117, rand());
115 EXPECT_EQ(2032643283, rand());
116 EXPECT_EQ(571329216, rand());
117 srand(0x01020304);
118 EXPECT_EQ(55436735, rand());
119 EXPECT_EQ(1399865117, rand());
120 srand(0x01020304);
121 EXPECT_EQ(55436735, rand());
122 EXPECT_EQ(1399865117, rand());
123 }
124
TEST(stdlib,mrand48)125 TEST(stdlib, mrand48) {
126 srand48(0x01020304);
127 EXPECT_EQ(-1476639856, mrand48());
128 EXPECT_EQ(795539493, mrand48());
129 EXPECT_EQ(1804534249, mrand48());
130 EXPECT_EQ(264732262, mrand48());
131 srand48(0x01020304);
132 EXPECT_EQ(-1476639856, mrand48());
133 EXPECT_EQ(795539493, mrand48());
134 srand48(0x01020304);
135 EXPECT_EQ(-1476639856, mrand48());
136 EXPECT_EQ(795539493, mrand48());
137 }
138
TEST(stdlib,posix_memalign)139 TEST(stdlib, posix_memalign) {
140 void* p;
141
142 ASSERT_EQ(0, posix_memalign(&p, 512, 128));
143 ASSERT_EQ(0U, reinterpret_cast<uintptr_t>(p) % 512);
144 free(p);
145
146 // Can't align to a non-power of 2.
147 ASSERT_EQ(EINVAL, posix_memalign(&p, 81, 128));
148 }
149
TEST(stdlib,realpath__NULL_filename)150 TEST(stdlib, realpath__NULL_filename) {
151 errno = 0;
152 char* p = realpath(NULL, NULL);
153 ASSERT_TRUE(p == NULL);
154 ASSERT_EQ(EINVAL, errno);
155 }
156
TEST(stdlib,realpath__empty_filename)157 TEST(stdlib, realpath__empty_filename) {
158 errno = 0;
159 char* p = realpath("", NULL);
160 ASSERT_TRUE(p == NULL);
161 ASSERT_EQ(ENOENT, errno);
162 }
163
TEST(stdlib,realpath__ENOENT)164 TEST(stdlib, realpath__ENOENT) {
165 errno = 0;
166 char* p = realpath("/this/directory/path/almost/certainly/does/not/exist", NULL);
167 ASSERT_TRUE(p == NULL);
168 ASSERT_EQ(ENOENT, errno);
169 }
170
TEST(stdlib,realpath__component_after_non_directory)171 TEST(stdlib, realpath__component_after_non_directory) {
172 errno = 0;
173 char* p = realpath("/dev/null/.", NULL);
174 ASSERT_TRUE(p == NULL);
175 ASSERT_EQ(ENOTDIR, errno);
176
177 errno = 0;
178 p = realpath("/dev/null/..", NULL);
179 ASSERT_TRUE(p == NULL);
180 ASSERT_EQ(ENOTDIR, errno);
181 }
182
TEST(stdlib,realpath)183 TEST(stdlib, realpath) {
184 // Get the name of this executable.
185 char executable_path[PATH_MAX];
186 int rc = readlink("/proc/self/exe", executable_path, sizeof(executable_path));
187 ASSERT_NE(rc, -1);
188 executable_path[rc] = '\0';
189
190 char buf[PATH_MAX + 1];
191 char* p = realpath("/proc/self/exe", buf);
192 ASSERT_STREQ(executable_path, p);
193
194 p = realpath("/proc/self/exe", NULL);
195 ASSERT_STREQ(executable_path, p);
196 free(p);
197 }
198
TEST(stdlib,qsort)199 TEST(stdlib, qsort) {
200 struct s {
201 char name[16];
202 static int comparator(const void* lhs, const void* rhs) {
203 return strcmp(reinterpret_cast<const s*>(lhs)->name, reinterpret_cast<const s*>(rhs)->name);
204 }
205 };
206 s entries[3];
207 strcpy(entries[0].name, "charlie");
208 strcpy(entries[1].name, "bravo");
209 strcpy(entries[2].name, "alpha");
210
211 qsort(entries, 3, sizeof(s), s::comparator);
212 ASSERT_STREQ("alpha", entries[0].name);
213 ASSERT_STREQ("bravo", entries[1].name);
214 ASSERT_STREQ("charlie", entries[2].name);
215
216 qsort(entries, 3, sizeof(s), s::comparator);
217 ASSERT_STREQ("alpha", entries[0].name);
218 ASSERT_STREQ("bravo", entries[1].name);
219 ASSERT_STREQ("charlie", entries[2].name);
220 }
221
TestBug57421_child(void * arg)222 static void* TestBug57421_child(void* arg) {
223 pthread_t main_thread = reinterpret_cast<pthread_t>(arg);
224 pthread_join(main_thread, NULL);
225 char* value = getenv("ENVIRONMENT_VARIABLE");
226 if (value == NULL) {
227 setenv("ENVIRONMENT_VARIABLE", "value", 1);
228 }
229 return NULL;
230 }
231
TestBug57421_main()232 static void TestBug57421_main() {
233 pthread_t t;
234 ASSERT_EQ(0, pthread_create(&t, NULL, TestBug57421_child, reinterpret_cast<void*>(pthread_self())));
235 pthread_exit(NULL);
236 }
237
238 // Even though this isn't really a death test, we have to say "DeathTest" here so gtest knows to
239 // run this test (which exits normally) in its own process.
240
241 class stdlib_DeathTest : public BionicDeathTest {};
242
TEST_F(stdlib_DeathTest,getenv_after_main_thread_exits)243 TEST_F(stdlib_DeathTest, getenv_after_main_thread_exits) {
244 // https://code.google.com/p/android/issues/detail?id=57421
245 ASSERT_EXIT(TestBug57421_main(), ::testing::ExitedWithCode(0), "");
246 }
247
TEST(stdlib,mkostemp64)248 TEST(stdlib, mkostemp64) {
249 TemporaryFile tf([](char* path) { return mkostemp64(path, O_CLOEXEC); });
250 int flags = fcntl(tf.fd, F_GETFD);
251 ASSERT_TRUE(flags != -1);
252 ASSERT_EQ(FD_CLOEXEC, flags & FD_CLOEXEC);
253 }
254
TEST(stdlib,mkostemp)255 TEST(stdlib, mkostemp) {
256 TemporaryFile tf([](char* path) { return mkostemp(path, O_CLOEXEC); });
257 int flags = fcntl(tf.fd, F_GETFD);
258 ASSERT_TRUE(flags != -1);
259 ASSERT_EQ(FD_CLOEXEC, flags & FD_CLOEXEC);
260 }
261
TEST(stdlib,mkstemp64)262 TEST(stdlib, mkstemp64) {
263 TemporaryFile tf(mkstemp64);
264 struct stat64 sb;
265 ASSERT_EQ(0, fstat64(tf.fd, &sb));
266 ASSERT_EQ(O_LARGEFILE, fcntl(tf.fd, F_GETFL) & O_LARGEFILE);
267 }
268
TEST(stdlib,mkstemp)269 TEST(stdlib, mkstemp) {
270 TemporaryFile tf;
271 struct stat sb;
272 ASSERT_EQ(0, fstat(tf.fd, &sb));
273 }
274
TEST(stdlib,system)275 TEST(stdlib, system) {
276 int status;
277
278 status = system("exit 0");
279 ASSERT_TRUE(WIFEXITED(status));
280 ASSERT_EQ(0, WEXITSTATUS(status));
281
282 status = system("exit 1");
283 ASSERT_TRUE(WIFEXITED(status));
284 ASSERT_EQ(1, WEXITSTATUS(status));
285 }
286
TEST(stdlib,atof)287 TEST(stdlib, atof) {
288 ASSERT_DOUBLE_EQ(1.23, atof("1.23"));
289 }
290
TEST(stdlib,strtod)291 TEST(stdlib, strtod) {
292 ASSERT_DOUBLE_EQ(1.23, strtod("1.23", NULL));
293 }
294
TEST(stdlib,strtof)295 TEST(stdlib, strtof) {
296 ASSERT_FLOAT_EQ(1.23, strtof("1.23", NULL));
297 }
298
TEST(stdlib,strtold)299 TEST(stdlib, strtold) {
300 ASSERT_DOUBLE_EQ(1.23, strtold("1.23", NULL));
301 }
302
TEST(stdlib,strtof_2206701)303 TEST(stdlib, strtof_2206701) {
304 ASSERT_EQ(0.0f, strtof("7.0064923216240853546186479164495e-46", NULL));
305 ASSERT_EQ(1.4e-45f, strtof("7.0064923216240853546186479164496e-46", NULL));
306 }
307
TEST(stdlib,strtod_largest_subnormal)308 TEST(stdlib, strtod_largest_subnormal) {
309 // This value has been known to cause javac and java to infinite loop.
310 // http://www.exploringbinary.com/java-hangs-when-converting-2-2250738585072012e-308/
311 ASSERT_EQ(2.2250738585072014e-308, strtod("2.2250738585072012e-308", NULL));
312 ASSERT_EQ(2.2250738585072014e-308, strtod("0.00022250738585072012e-304", NULL));
313 ASSERT_EQ(2.2250738585072014e-308, strtod("00000002.2250738585072012e-308", NULL));
314 ASSERT_EQ(2.2250738585072014e-308, strtod("2.225073858507201200000e-308", NULL));
315 ASSERT_EQ(2.2250738585072014e-308, strtod("2.2250738585072012e-00308", NULL));
316 ASSERT_EQ(2.2250738585072014e-308, strtod("2.22507385850720129978001e-308", NULL));
317 ASSERT_EQ(-2.2250738585072014e-308, strtod("-2.2250738585072012e-308", NULL));
318 }
319
TEST(stdlib,quick_exit)320 TEST(stdlib, quick_exit) {
321 pid_t pid = fork();
322 ASSERT_NE(-1, pid) << strerror(errno);
323
324 if (pid == 0) {
325 quick_exit(99);
326 }
327
328 AssertChildExited(pid, 99);
329 }
330
331 static int quick_exit_status = 0;
332
quick_exit_1(void)333 static void quick_exit_1(void) {
334 ASSERT_EQ(quick_exit_status, 0);
335 quick_exit_status = 1;
336 }
337
quick_exit_2(void)338 static void quick_exit_2(void) {
339 ASSERT_EQ(quick_exit_status, 1);
340 }
341
not_run(void)342 static void not_run(void) {
343 FAIL();
344 }
345
TEST(stdlib,at_quick_exit)346 TEST(stdlib, at_quick_exit) {
347 pid_t pid = fork();
348 ASSERT_NE(-1, pid) << strerror(errno);
349
350 if (pid == 0) {
351 ASSERT_EQ(at_quick_exit(quick_exit_2), 0);
352 ASSERT_EQ(at_quick_exit(quick_exit_1), 0);
353 atexit(not_run);
354 quick_exit(99);
355 }
356
357 AssertChildExited(pid, 99);
358 }
359
TEST(unistd,_Exit)360 TEST(unistd, _Exit) {
361 pid_t pid = fork();
362 ASSERT_NE(-1, pid) << strerror(errno);
363
364 if (pid == 0) {
365 _Exit(99);
366 }
367
368 AssertChildExited(pid, 99);
369 }
370
TEST(stdlib,pty_smoke)371 TEST(stdlib, pty_smoke) {
372 // getpt returns a pty with O_RDWR|O_NOCTTY.
373 int fd = getpt();
374 ASSERT_NE(-1, fd);
375
376 // grantpt is a no-op.
377 ASSERT_EQ(0, grantpt(fd));
378
379 // ptsname_r should start "/dev/pts/".
380 char name_r[128];
381 ASSERT_EQ(0, ptsname_r(fd, name_r, sizeof(name_r)));
382 name_r[9] = 0;
383 ASSERT_STREQ("/dev/pts/", name_r);
384
385 close(fd);
386 }
387
TEST(stdlib,posix_openpt)388 TEST(stdlib, posix_openpt) {
389 int fd = posix_openpt(O_RDWR|O_NOCTTY|O_CLOEXEC);
390 ASSERT_NE(-1, fd);
391 close(fd);
392 }
393
TEST(stdlib,ptsname_r_ENOTTY)394 TEST(stdlib, ptsname_r_ENOTTY) {
395 errno = 0;
396 char buf[128];
397 ASSERT_EQ(ENOTTY, ptsname_r(STDOUT_FILENO, buf, sizeof(buf)));
398 ASSERT_EQ(ENOTTY, errno);
399 }
400
TEST(stdlib,ptsname_r_EINVAL)401 TEST(stdlib, ptsname_r_EINVAL) {
402 int fd = getpt();
403 ASSERT_NE(-1, fd);
404 errno = 0;
405 char* buf = NULL;
406 ASSERT_EQ(EINVAL, ptsname_r(fd, buf, 128));
407 ASSERT_EQ(EINVAL, errno);
408 close(fd);
409 }
410
TEST(stdlib,ptsname_r_ERANGE)411 TEST(stdlib, ptsname_r_ERANGE) {
412 int fd = getpt();
413 ASSERT_NE(-1, fd);
414 errno = 0;
415 char buf[1];
416 ASSERT_EQ(ERANGE, ptsname_r(fd, buf, sizeof(buf)));
417 ASSERT_EQ(ERANGE, errno);
418 close(fd);
419 }
420
TEST(stdlib,ttyname_r)421 TEST(stdlib, ttyname_r) {
422 int fd = getpt();
423 ASSERT_NE(-1, fd);
424
425 // ttyname_r returns "/dev/ptmx" for a pty.
426 char name_r[128];
427 ASSERT_EQ(0, ttyname_r(fd, name_r, sizeof(name_r)));
428 ASSERT_STREQ("/dev/ptmx", name_r);
429
430 close(fd);
431 }
432
TEST(stdlib,ttyname_r_ENOTTY)433 TEST(stdlib, ttyname_r_ENOTTY) {
434 int fd = open("/dev/null", O_WRONLY);
435 errno = 0;
436 char buf[128];
437 ASSERT_EQ(ENOTTY, ttyname_r(fd, buf, sizeof(buf)));
438 ASSERT_EQ(ENOTTY, errno);
439 close(fd);
440 }
441
TEST(stdlib,ttyname_r_EINVAL)442 TEST(stdlib, ttyname_r_EINVAL) {
443 int fd = getpt();
444 ASSERT_NE(-1, fd);
445 errno = 0;
446 char* buf = NULL;
447 ASSERT_EQ(EINVAL, ttyname_r(fd, buf, 128));
448 ASSERT_EQ(EINVAL, errno);
449 close(fd);
450 }
451
TEST(stdlib,ttyname_r_ERANGE)452 TEST(stdlib, ttyname_r_ERANGE) {
453 int fd = getpt();
454 ASSERT_NE(-1, fd);
455 errno = 0;
456 char buf[1];
457 ASSERT_EQ(ERANGE, ttyname_r(fd, buf, sizeof(buf)));
458 ASSERT_EQ(ERANGE, errno);
459 close(fd);
460 }
461
TEST(stdlib,unlockpt_ENOTTY)462 TEST(stdlib, unlockpt_ENOTTY) {
463 int fd = open("/dev/null", O_WRONLY);
464 errno = 0;
465 ASSERT_EQ(-1, unlockpt(fd));
466 ASSERT_EQ(ENOTTY, errno);
467 close(fd);
468 }
469
TEST(stdlib,strtol_EINVAL)470 TEST(stdlib, strtol_EINVAL) {
471 errno = 0;
472 strtol("123", NULL, -1);
473 ASSERT_EQ(EINVAL, errno);
474 errno = 0;
475 strtol("123", NULL, 1);
476 ASSERT_EQ(EINVAL, errno);
477 errno = 0;
478 strtol("123", NULL, 37);
479 ASSERT_EQ(EINVAL, errno);
480 }
481
TEST(stdlib,strtoll_EINVAL)482 TEST(stdlib, strtoll_EINVAL) {
483 errno = 0;
484 strtoll("123", NULL, -1);
485 ASSERT_EQ(EINVAL, errno);
486 errno = 0;
487 strtoll("123", NULL, 1);
488 ASSERT_EQ(EINVAL, errno);
489 errno = 0;
490 strtoll("123", NULL, 37);
491 ASSERT_EQ(EINVAL, errno);
492 }
493
TEST(stdlib,strtoul_EINVAL)494 TEST(stdlib, strtoul_EINVAL) {
495 errno = 0;
496 strtoul("123", NULL, -1);
497 ASSERT_EQ(EINVAL, errno);
498 errno = 0;
499 strtoul("123", NULL, 1);
500 ASSERT_EQ(EINVAL, errno);
501 errno = 0;
502 strtoul("123", NULL, 37);
503 ASSERT_EQ(EINVAL, errno);
504 }
505
TEST(stdlib,strtoull_EINVAL)506 TEST(stdlib, strtoull_EINVAL) {
507 errno = 0;
508 strtoull("123", NULL, -1);
509 ASSERT_EQ(EINVAL, errno);
510 errno = 0;
511 strtoull("123", NULL, 1);
512 ASSERT_EQ(EINVAL, errno);
513 errno = 0;
514 strtoull("123", NULL, 37);
515 ASSERT_EQ(EINVAL, errno);
516 }
517