1 /*
2 * Copyright (C) 2013 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 #include "BionicDeathTest.h"
19
20 #include <errno.h>
21 #include <sys/wait.h>
22 #include <unistd.h>
23 #include <string>
24
25 #if defined(__BIONIC__)
26
27 #define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_
28 #include <sys/_system_properties.h>
29
30 extern void *__system_property_area__;
31
32 struct LocalPropertyTestState {
LocalPropertyTestStateLocalPropertyTestState33 LocalPropertyTestState() : valid(false) {
34 const char* ANDROID_DATA = getenv("ANDROID_DATA");
35 char dir_template[PATH_MAX];
36 snprintf(dir_template, sizeof(dir_template), "%s/local/tmp/prop-XXXXXX", ANDROID_DATA);
37 char* dirname = mkdtemp(dir_template);
38 if (!dirname) {
39 fprintf(stderr, "making temp file for test state failed (is %s writable?): %s",
40 dir_template, strerror(errno));
41 return;
42 }
43
44 old_pa = __system_property_area__;
45 __system_property_area__ = NULL;
46
47 pa_dirname = dirname;
48 pa_filename = pa_dirname + "/__properties__";
49
50 __system_property_set_filename(pa_filename.c_str());
51 __system_property_area_init();
52 valid = true;
53 }
54
~LocalPropertyTestStateLocalPropertyTestState55 ~LocalPropertyTestState() {
56 if (!valid) {
57 return;
58 }
59
60 __system_property_area__ = old_pa;
61
62 __system_property_set_filename(PROP_FILENAME);
63 unlink(pa_filename.c_str());
64 rmdir(pa_dirname.c_str());
65 }
66 public:
67 bool valid;
68 private:
69 std::string pa_dirname;
70 std::string pa_filename;
71 void *old_pa;
72 };
73
foreach_test_callback(const prop_info * pi,void * cookie)74 static void foreach_test_callback(const prop_info *pi, void* cookie) {
75 size_t *count = static_cast<size_t *>(cookie);
76
77 ASSERT_NE((prop_info *)NULL, pi);
78 (*count)++;
79 }
80
hierarchical_test_callback(const prop_info * pi,void * cookie)81 static void hierarchical_test_callback(const prop_info *pi, void *cookie) {
82 bool (*ok)[8][8] = static_cast<bool (*)[8][8]>(cookie);
83
84 char name[PROP_NAME_MAX];
85 char value[PROP_VALUE_MAX];
86
87 __system_property_read(pi, name, value);
88
89 int name_i, name_j, name_k;
90 int value_i, value_j, value_k;
91 ASSERT_EQ(3, sscanf(name, "property_%d.%d.%d", &name_i, &name_j, &name_k));
92 ASSERT_EQ(3, sscanf(value, "value_%d.%d.%d", &value_i, &value_j, &value_k));
93 ASSERT_EQ(name_i, value_i);
94 ASSERT_GE(name_i, 0);
95 ASSERT_LT(name_i, 8);
96 ASSERT_EQ(name_j, value_j);
97 ASSERT_GE(name_j, 0);
98 ASSERT_LT(name_j, 8);
99 ASSERT_EQ(name_k, value_k);
100 ASSERT_GE(name_k, 0);
101 ASSERT_LT(name_k, 8);
102
103 ok[name_i][name_j][name_k] = true;
104 }
105
PropertyWaitHelperFn(void * arg)106 static void *PropertyWaitHelperFn(void *arg) {
107 int *flag = (int *)arg;
108 prop_info *pi;
109 pi = (prop_info *)__system_property_find("property");
110 usleep(100000);
111
112 *flag = 1;
113 __system_property_update(pi, "value3", 6);
114
115 return NULL;
116 }
117
118 #endif // __BIONIC__
119
TEST(properties,add)120 TEST(properties, add) {
121 #if defined(__BIONIC__)
122 LocalPropertyTestState pa;
123 ASSERT_TRUE(pa.valid);
124
125 char propvalue[PROP_VALUE_MAX];
126
127 ASSERT_EQ(0, __system_property_add("property", 8, "value1", 6));
128 ASSERT_EQ(0, __system_property_add("other_property", 14, "value2", 6));
129 ASSERT_EQ(0, __system_property_add("property_other", 14, "value3", 6));
130
131 ASSERT_EQ(6, __system_property_get("property", propvalue));
132 ASSERT_STREQ(propvalue, "value1");
133
134 ASSERT_EQ(6, __system_property_get("other_property", propvalue));
135 ASSERT_STREQ(propvalue, "value2");
136
137 ASSERT_EQ(6, __system_property_get("property_other", propvalue));
138 ASSERT_STREQ(propvalue, "value3");
139 #else // __BIONIC__
140 GTEST_LOG_(INFO) << "This test does nothing.\n";
141 #endif // __BIONIC__
142 }
143
TEST(properties,update)144 TEST(properties, update) {
145 #if defined(__BIONIC__)
146 LocalPropertyTestState pa;
147 ASSERT_TRUE(pa.valid);
148
149 char propvalue[PROP_VALUE_MAX];
150 prop_info *pi;
151
152 ASSERT_EQ(0, __system_property_add("property", 8, "oldvalue1", 9));
153 ASSERT_EQ(0, __system_property_add("other_property", 14, "value2", 6));
154 ASSERT_EQ(0, __system_property_add("property_other", 14, "value3", 6));
155
156 pi = (prop_info *)__system_property_find("property");
157 ASSERT_NE((prop_info *)NULL, pi);
158 __system_property_update(pi, "value4", 6);
159
160 pi = (prop_info *)__system_property_find("other_property");
161 ASSERT_NE((prop_info *)NULL, pi);
162 __system_property_update(pi, "newvalue5", 9);
163
164 pi = (prop_info *)__system_property_find("property_other");
165 ASSERT_NE((prop_info *)NULL, pi);
166 __system_property_update(pi, "value6", 6);
167
168 ASSERT_EQ(6, __system_property_get("property", propvalue));
169 ASSERT_STREQ(propvalue, "value4");
170
171 ASSERT_EQ(9, __system_property_get("other_property", propvalue));
172 ASSERT_STREQ(propvalue, "newvalue5");
173
174 ASSERT_EQ(6, __system_property_get("property_other", propvalue));
175 ASSERT_STREQ(propvalue, "value6");
176 #else // __BIONIC__
177 GTEST_LOG_(INFO) << "This test does nothing.\n";
178 #endif // __BIONIC__
179 }
180
TEST(properties,fill)181 TEST(properties, fill) {
182 #if defined(__BIONIC__)
183 LocalPropertyTestState pa;
184 ASSERT_TRUE(pa.valid);
185 char prop_name[PROP_NAME_MAX];
186 char prop_value[PROP_VALUE_MAX];
187 char prop_value_ret[PROP_VALUE_MAX];
188 int count = 0;
189 int ret;
190
191 while (true) {
192 ret = snprintf(prop_name, PROP_NAME_MAX - 1, "property_%d", count);
193 memset(prop_name + ret, 'a', PROP_NAME_MAX - 1 - ret);
194 ret = snprintf(prop_value, PROP_VALUE_MAX - 1, "value_%d", count);
195 memset(prop_value + ret, 'b', PROP_VALUE_MAX - 1 - ret);
196 prop_name[PROP_NAME_MAX - 1] = 0;
197 prop_value[PROP_VALUE_MAX - 1] = 0;
198
199 ret = __system_property_add(prop_name, PROP_NAME_MAX - 1, prop_value, PROP_VALUE_MAX - 1);
200 if (ret < 0)
201 break;
202
203 count++;
204 }
205
206 // For historical reasons at least 247 properties must be supported
207 ASSERT_GE(count, 247);
208
209 for (int i = 0; i < count; i++) {
210 ret = snprintf(prop_name, PROP_NAME_MAX - 1, "property_%d", i);
211 memset(prop_name + ret, 'a', PROP_NAME_MAX - 1 - ret);
212 ret = snprintf(prop_value, PROP_VALUE_MAX - 1, "value_%d", i);
213 memset(prop_value + ret, 'b', PROP_VALUE_MAX - 1 - ret);
214 prop_name[PROP_NAME_MAX - 1] = 0;
215 prop_value[PROP_VALUE_MAX - 1] = 0;
216 memset(prop_value_ret, '\0', PROP_VALUE_MAX);
217
218 ASSERT_EQ(PROP_VALUE_MAX - 1, __system_property_get(prop_name, prop_value_ret));
219 ASSERT_EQ(0, memcmp(prop_value, prop_value_ret, PROP_VALUE_MAX));
220 }
221 #else // __BIONIC__
222 GTEST_LOG_(INFO) << "This test does nothing.\n";
223 #endif // __BIONIC__
224 }
225
TEST(properties,foreach)226 TEST(properties, foreach) {
227 #if defined(__BIONIC__)
228 LocalPropertyTestState pa;
229 ASSERT_TRUE(pa.valid);
230 size_t count = 0;
231
232 ASSERT_EQ(0, __system_property_add("property", 8, "value1", 6));
233 ASSERT_EQ(0, __system_property_add("other_property", 14, "value2", 6));
234 ASSERT_EQ(0, __system_property_add("property_other", 14, "value3", 6));
235
236 ASSERT_EQ(0, __system_property_foreach(foreach_test_callback, &count));
237 ASSERT_EQ(3U, count);
238 #else // __BIONIC__
239 GTEST_LOG_(INFO) << "This test does nothing.\n";
240 #endif // __BIONIC__
241 }
242
TEST(properties,find_nth)243 TEST(properties, find_nth) {
244 #if defined(__BIONIC__)
245 LocalPropertyTestState pa;
246 ASSERT_TRUE(pa.valid);
247
248 ASSERT_EQ(0, __system_property_add("property", 8, "value1", 6));
249 ASSERT_EQ(0, __system_property_add("other_property", 14, "value2", 6));
250 ASSERT_EQ(0, __system_property_add("property_other", 14, "value3", 6));
251
252 ASSERT_NE((const prop_info *)NULL, __system_property_find_nth(0));
253 ASSERT_NE((const prop_info *)NULL, __system_property_find_nth(1));
254 ASSERT_NE((const prop_info *)NULL, __system_property_find_nth(2));
255
256 ASSERT_EQ((const prop_info *)NULL, __system_property_find_nth(3));
257 ASSERT_EQ((const prop_info *)NULL, __system_property_find_nth(4));
258 ASSERT_EQ((const prop_info *)NULL, __system_property_find_nth(5));
259 ASSERT_EQ((const prop_info *)NULL, __system_property_find_nth(100));
260 ASSERT_EQ((const prop_info *)NULL, __system_property_find_nth(200));
261 ASSERT_EQ((const prop_info *)NULL, __system_property_find_nth(247));
262 #else // __BIONIC__
263 GTEST_LOG_(INFO) << "This test does nothing.\n";
264 #endif // __BIONIC__
265 }
266
TEST(properties,fill_hierarchical)267 TEST(properties, fill_hierarchical) {
268 #if defined(__BIONIC__)
269 LocalPropertyTestState pa;
270 ASSERT_TRUE(pa.valid);
271 char prop_name[PROP_NAME_MAX];
272 char prop_value[PROP_VALUE_MAX];
273 char prop_value_ret[PROP_VALUE_MAX];
274 int ret;
275
276 for (int i = 0; i < 8; i++) {
277 for (int j = 0; j < 8; j++) {
278 for (int k = 0; k < 8; k++) {
279 ret = snprintf(prop_name, PROP_NAME_MAX - 1, "property_%d.%d.%d", i, j, k);
280 memset(prop_name + ret, 'a', PROP_NAME_MAX - 1 - ret);
281 ret = snprintf(prop_value, PROP_VALUE_MAX - 1, "value_%d.%d.%d", i, j, k);
282 memset(prop_value + ret, 'b', PROP_VALUE_MAX - 1 - ret);
283 prop_name[PROP_NAME_MAX - 1] = 0;
284 prop_value[PROP_VALUE_MAX - 1] = 0;
285
286 ASSERT_EQ(0, __system_property_add(prop_name, PROP_NAME_MAX - 1, prop_value, PROP_VALUE_MAX - 1));
287 }
288 }
289 }
290
291 for (int i = 0; i < 8; i++) {
292 for (int j = 0; j < 8; j++) {
293 for (int k = 0; k < 8; k++) {
294 ret = snprintf(prop_name, PROP_NAME_MAX - 1, "property_%d.%d.%d", i, j, k);
295 memset(prop_name + ret, 'a', PROP_NAME_MAX - 1 - ret);
296 ret = snprintf(prop_value, PROP_VALUE_MAX - 1, "value_%d.%d.%d", i, j, k);
297 memset(prop_value + ret, 'b', PROP_VALUE_MAX - 1 - ret);
298 prop_name[PROP_NAME_MAX - 1] = 0;
299 prop_value[PROP_VALUE_MAX - 1] = 0;
300 memset(prop_value_ret, '\0', PROP_VALUE_MAX);
301
302 ASSERT_EQ(PROP_VALUE_MAX - 1, __system_property_get(prop_name, prop_value_ret));
303 ASSERT_EQ(0, memcmp(prop_value, prop_value_ret, PROP_VALUE_MAX));
304 }
305 }
306 }
307
308 bool ok[8][8][8];
309 memset(ok, 0, sizeof(ok));
310 __system_property_foreach(hierarchical_test_callback, ok);
311
312 for (int i = 0; i < 8; i++) {
313 for (int j = 0; j < 8; j++) {
314 for (int k = 0; k < 8; k++) {
315 ASSERT_TRUE(ok[i][j][k]);
316 }
317 }
318 }
319 #else // __BIONIC__
320 GTEST_LOG_(INFO) << "This test does nothing.\n";
321 #endif // __BIONIC__
322 }
323
TEST(properties,errors)324 TEST(properties, errors) {
325 #if defined(__BIONIC__)
326 LocalPropertyTestState pa;
327 ASSERT_TRUE(pa.valid);
328 char prop_value[PROP_NAME_MAX];
329
330 ASSERT_EQ(0, __system_property_add("property", 8, "value1", 6));
331 ASSERT_EQ(0, __system_property_add("other_property", 14, "value2", 6));
332 ASSERT_EQ(0, __system_property_add("property_other", 14, "value3", 6));
333
334 ASSERT_EQ(0, __system_property_find("property1"));
335 ASSERT_EQ(0, __system_property_get("property1", prop_value));
336
337 ASSERT_EQ(-1, __system_property_add("name", PROP_NAME_MAX, "value", 5));
338 ASSERT_EQ(-1, __system_property_add("name", 4, "value", PROP_VALUE_MAX));
339 ASSERT_EQ(-1, __system_property_update(NULL, "value", PROP_VALUE_MAX));
340 #else // __BIONIC__
341 GTEST_LOG_(INFO) << "This test does nothing.\n";
342 #endif // __BIONIC__
343 }
344
TEST(properties,serial)345 TEST(properties, serial) {
346 #if defined(__BIONIC__)
347 LocalPropertyTestState pa;
348 ASSERT_TRUE(pa.valid);
349 const prop_info *pi;
350 unsigned int serial;
351
352 ASSERT_EQ(0, __system_property_add("property", 8, "value1", 6));
353 ASSERT_NE((const prop_info *)NULL, pi = __system_property_find("property"));
354 serial = __system_property_serial(pi);
355 ASSERT_EQ(0, __system_property_update((prop_info *)pi, "value2", 6));
356 ASSERT_NE(serial, __system_property_serial(pi));
357 #else // __BIONIC__
358 GTEST_LOG_(INFO) << "This test does nothing.\n";
359 #endif // __BIONIC__
360 }
361
TEST(properties,wait)362 TEST(properties, wait) {
363 #if defined(__BIONIC__)
364 LocalPropertyTestState pa;
365 ASSERT_TRUE(pa.valid);
366 unsigned int serial;
367 prop_info *pi;
368 pthread_t t;
369 int flag = 0;
370
371 ASSERT_EQ(0, __system_property_add("property", 8, "value1", 6));
372 serial = __system_property_wait_any(0);
373 pi = (prop_info *)__system_property_find("property");
374 ASSERT_NE((prop_info *)NULL, pi);
375 __system_property_update(pi, "value2", 6);
376 serial = __system_property_wait_any(serial);
377
378 ASSERT_EQ(0, pthread_create(&t, NULL, PropertyWaitHelperFn, &flag));
379 ASSERT_EQ(flag, 0);
380 serial = __system_property_wait_any(serial);
381 ASSERT_EQ(flag, 1);
382
383 void* result;
384 ASSERT_EQ(0, pthread_join(t, &result));
385 #else // __BIONIC__
386 GTEST_LOG_(INFO) << "This test does nothing.\n";
387 #endif // __BIONIC__
388 }
389
390 class KilledByFault {
391 public:
KilledByFault()392 explicit KilledByFault() {};
393 bool operator()(int exit_status) const;
394 };
395
operator ()(int exit_status) const396 bool KilledByFault::operator()(int exit_status) const {
397 return WIFSIGNALED(exit_status) &&
398 (WTERMSIG(exit_status) == SIGSEGV ||
399 WTERMSIG(exit_status) == SIGBUS ||
400 WTERMSIG(exit_status) == SIGABRT);
401 }
402
403 class properties_DeathTest : public BionicDeathTest {};
404
TEST_F(properties_DeathTest,read_only)405 TEST_F(properties_DeathTest, read_only) {
406 #if defined(__BIONIC__)
407
408 // This test only makes sense if we're talking to the real system property service.
409 struct stat sb;
410 if (stat(PROP_FILENAME, &sb) == -1 && errno == ENOENT) {
411 return;
412 }
413
414 ASSERT_EXIT(__system_property_add("property", 8, "value", 5), KilledByFault(), "");
415 #else // __BIONIC__
416 GTEST_LOG_(INFO) << "This test does nothing.\n";
417 #endif // __BIONIC__
418 }
419