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 pa_dirname = dirname;
45 pa_filename = pa_dirname + "/__properties__";
46
47 __system_property_set_filename(pa_filename.c_str());
48 __system_property_area_init();
49 valid = true;
50 }
51
~LocalPropertyTestStateLocalPropertyTestState52 ~LocalPropertyTestState() {
53 if (!valid) {
54 return;
55 }
56
57 __system_property_set_filename(PROP_FILENAME);
58 __system_properties_init();
59 unlink(pa_filename.c_str());
60 rmdir(pa_dirname.c_str());
61 }
62 public:
63 bool valid;
64 private:
65 std::string pa_dirname;
66 std::string pa_filename;
67 };
68
foreach_test_callback(const prop_info * pi,void * cookie)69 static void foreach_test_callback(const prop_info *pi, void* cookie) {
70 size_t *count = static_cast<size_t *>(cookie);
71
72 ASSERT_NE((prop_info *)NULL, pi);
73 (*count)++;
74 }
75
hierarchical_test_callback(const prop_info * pi,void * cookie)76 static void hierarchical_test_callback(const prop_info *pi, void *cookie) {
77 bool (*ok)[8][8] = static_cast<bool (*)[8][8]>(cookie);
78
79 char name[PROP_NAME_MAX];
80 char value[PROP_VALUE_MAX];
81
82 __system_property_read(pi, name, value);
83
84 int name_i, name_j, name_k;
85 int value_i, value_j, value_k;
86 ASSERT_EQ(3, sscanf(name, "property_%d.%d.%d", &name_i, &name_j, &name_k));
87 ASSERT_EQ(3, sscanf(value, "value_%d.%d.%d", &value_i, &value_j, &value_k));
88 ASSERT_EQ(name_i, value_i);
89 ASSERT_GE(name_i, 0);
90 ASSERT_LT(name_i, 8);
91 ASSERT_EQ(name_j, value_j);
92 ASSERT_GE(name_j, 0);
93 ASSERT_LT(name_j, 8);
94 ASSERT_EQ(name_k, value_k);
95 ASSERT_GE(name_k, 0);
96 ASSERT_LT(name_k, 8);
97
98 ok[name_i][name_j][name_k] = true;
99 }
100
PropertyWaitHelperFn(void * arg)101 static void *PropertyWaitHelperFn(void *arg) {
102 int *flag = (int *)arg;
103 prop_info *pi;
104 pi = (prop_info *)__system_property_find("property");
105 usleep(100000);
106
107 *flag = 1;
108 __system_property_update(pi, "value3", 6);
109
110 return NULL;
111 }
112
113 #endif // __BIONIC__
114
TEST(properties,add)115 TEST(properties, add) {
116 #if defined(__BIONIC__)
117 LocalPropertyTestState pa;
118 ASSERT_TRUE(pa.valid);
119
120 char propvalue[PROP_VALUE_MAX];
121
122 ASSERT_EQ(0, __system_property_add("property", 8, "value1", 6));
123 ASSERT_EQ(0, __system_property_add("other_property", 14, "value2", 6));
124 ASSERT_EQ(0, __system_property_add("property_other", 14, "value3", 6));
125
126 ASSERT_EQ(6, __system_property_get("property", propvalue));
127 ASSERT_STREQ(propvalue, "value1");
128
129 ASSERT_EQ(6, __system_property_get("other_property", propvalue));
130 ASSERT_STREQ(propvalue, "value2");
131
132 ASSERT_EQ(6, __system_property_get("property_other", propvalue));
133 ASSERT_STREQ(propvalue, "value3");
134 #else // __BIONIC__
135 GTEST_LOG_(INFO) << "This test does nothing.\n";
136 #endif // __BIONIC__
137 }
138
TEST(properties,update)139 TEST(properties, update) {
140 #if defined(__BIONIC__)
141 LocalPropertyTestState pa;
142 ASSERT_TRUE(pa.valid);
143
144 char propvalue[PROP_VALUE_MAX];
145 prop_info *pi;
146
147 ASSERT_EQ(0, __system_property_add("property", 8, "oldvalue1", 9));
148 ASSERT_EQ(0, __system_property_add("other_property", 14, "value2", 6));
149 ASSERT_EQ(0, __system_property_add("property_other", 14, "value3", 6));
150
151 pi = (prop_info *)__system_property_find("property");
152 ASSERT_NE((prop_info *)NULL, pi);
153 __system_property_update(pi, "value4", 6);
154
155 pi = (prop_info *)__system_property_find("other_property");
156 ASSERT_NE((prop_info *)NULL, pi);
157 __system_property_update(pi, "newvalue5", 9);
158
159 pi = (prop_info *)__system_property_find("property_other");
160 ASSERT_NE((prop_info *)NULL, pi);
161 __system_property_update(pi, "value6", 6);
162
163 ASSERT_EQ(6, __system_property_get("property", propvalue));
164 ASSERT_STREQ(propvalue, "value4");
165
166 ASSERT_EQ(9, __system_property_get("other_property", propvalue));
167 ASSERT_STREQ(propvalue, "newvalue5");
168
169 ASSERT_EQ(6, __system_property_get("property_other", propvalue));
170 ASSERT_STREQ(propvalue, "value6");
171 #else // __BIONIC__
172 GTEST_LOG_(INFO) << "This test does nothing.\n";
173 #endif // __BIONIC__
174 }
175
TEST(properties,fill)176 TEST(properties, fill) {
177 #if defined(__BIONIC__)
178 LocalPropertyTestState pa;
179 ASSERT_TRUE(pa.valid);
180 char prop_name[PROP_NAME_MAX];
181 char prop_value[PROP_VALUE_MAX];
182 char prop_value_ret[PROP_VALUE_MAX];
183 int count = 0;
184 int ret;
185
186 while (true) {
187 ret = snprintf(prop_name, PROP_NAME_MAX - 1, "property_%d", count);
188 memset(prop_name + ret, 'a', PROP_NAME_MAX - 1 - ret);
189 ret = snprintf(prop_value, PROP_VALUE_MAX - 1, "value_%d", count);
190 memset(prop_value + ret, 'b', PROP_VALUE_MAX - 1 - ret);
191 prop_name[PROP_NAME_MAX - 1] = 0;
192 prop_value[PROP_VALUE_MAX - 1] = 0;
193
194 ret = __system_property_add(prop_name, PROP_NAME_MAX - 1, prop_value, PROP_VALUE_MAX - 1);
195 if (ret < 0)
196 break;
197
198 count++;
199 }
200
201 // For historical reasons at least 247 properties must be supported
202 ASSERT_GE(count, 247);
203
204 for (int i = 0; i < count; i++) {
205 ret = snprintf(prop_name, PROP_NAME_MAX - 1, "property_%d", i);
206 memset(prop_name + ret, 'a', PROP_NAME_MAX - 1 - ret);
207 ret = snprintf(prop_value, PROP_VALUE_MAX - 1, "value_%d", i);
208 memset(prop_value + ret, 'b', PROP_VALUE_MAX - 1 - ret);
209 prop_name[PROP_NAME_MAX - 1] = 0;
210 prop_value[PROP_VALUE_MAX - 1] = 0;
211 memset(prop_value_ret, '\0', PROP_VALUE_MAX);
212
213 ASSERT_EQ(PROP_VALUE_MAX - 1, __system_property_get(prop_name, prop_value_ret));
214 ASSERT_EQ(0, memcmp(prop_value, prop_value_ret, PROP_VALUE_MAX));
215 }
216 #else // __BIONIC__
217 GTEST_LOG_(INFO) << "This test does nothing.\n";
218 #endif // __BIONIC__
219 }
220
TEST(properties,foreach)221 TEST(properties, foreach) {
222 #if defined(__BIONIC__)
223 LocalPropertyTestState pa;
224 ASSERT_TRUE(pa.valid);
225 size_t count = 0;
226
227 ASSERT_EQ(0, __system_property_add("property", 8, "value1", 6));
228 ASSERT_EQ(0, __system_property_add("other_property", 14, "value2", 6));
229 ASSERT_EQ(0, __system_property_add("property_other", 14, "value3", 6));
230
231 ASSERT_EQ(0, __system_property_foreach(foreach_test_callback, &count));
232 ASSERT_EQ(3U, count);
233 #else // __BIONIC__
234 GTEST_LOG_(INFO) << "This test does nothing.\n";
235 #endif // __BIONIC__
236 }
237
TEST(properties,find_nth)238 TEST(properties, find_nth) {
239 #if defined(__BIONIC__)
240 LocalPropertyTestState pa;
241 ASSERT_TRUE(pa.valid);
242
243 ASSERT_EQ(0, __system_property_add("property", 8, "value1", 6));
244 ASSERT_EQ(0, __system_property_add("other_property", 14, "value2", 6));
245 ASSERT_EQ(0, __system_property_add("property_other", 14, "value3", 6));
246
247 ASSERT_NE((const prop_info *)NULL, __system_property_find_nth(0));
248 ASSERT_NE((const prop_info *)NULL, __system_property_find_nth(1));
249 ASSERT_NE((const prop_info *)NULL, __system_property_find_nth(2));
250
251 ASSERT_EQ((const prop_info *)NULL, __system_property_find_nth(3));
252 ASSERT_EQ((const prop_info *)NULL, __system_property_find_nth(4));
253 ASSERT_EQ((const prop_info *)NULL, __system_property_find_nth(5));
254 ASSERT_EQ((const prop_info *)NULL, __system_property_find_nth(100));
255 ASSERT_EQ((const prop_info *)NULL, __system_property_find_nth(200));
256 ASSERT_EQ((const prop_info *)NULL, __system_property_find_nth(247));
257 #else // __BIONIC__
258 GTEST_LOG_(INFO) << "This test does nothing.\n";
259 #endif // __BIONIC__
260 }
261
TEST(properties,fill_hierarchical)262 TEST(properties, fill_hierarchical) {
263 #if defined(__BIONIC__)
264 LocalPropertyTestState pa;
265 ASSERT_TRUE(pa.valid);
266 char prop_name[PROP_NAME_MAX];
267 char prop_value[PROP_VALUE_MAX];
268 char prop_value_ret[PROP_VALUE_MAX];
269 int ret;
270
271 for (int i = 0; i < 8; i++) {
272 for (int j = 0; j < 8; j++) {
273 for (int k = 0; k < 8; k++) {
274 ret = snprintf(prop_name, PROP_NAME_MAX - 1, "property_%d.%d.%d", i, j, k);
275 memset(prop_name + ret, 'a', PROP_NAME_MAX - 1 - ret);
276 ret = snprintf(prop_value, PROP_VALUE_MAX - 1, "value_%d.%d.%d", i, j, k);
277 memset(prop_value + ret, 'b', PROP_VALUE_MAX - 1 - ret);
278 prop_name[PROP_NAME_MAX - 1] = 0;
279 prop_value[PROP_VALUE_MAX - 1] = 0;
280
281 ASSERT_EQ(0, __system_property_add(prop_name, PROP_NAME_MAX - 1, prop_value, PROP_VALUE_MAX - 1));
282 }
283 }
284 }
285
286 for (int i = 0; i < 8; i++) {
287 for (int j = 0; j < 8; j++) {
288 for (int k = 0; k < 8; k++) {
289 ret = snprintf(prop_name, PROP_NAME_MAX - 1, "property_%d.%d.%d", i, j, k);
290 memset(prop_name + ret, 'a', PROP_NAME_MAX - 1 - ret);
291 ret = snprintf(prop_value, PROP_VALUE_MAX - 1, "value_%d.%d.%d", i, j, k);
292 memset(prop_value + ret, 'b', PROP_VALUE_MAX - 1 - ret);
293 prop_name[PROP_NAME_MAX - 1] = 0;
294 prop_value[PROP_VALUE_MAX - 1] = 0;
295 memset(prop_value_ret, '\0', PROP_VALUE_MAX);
296
297 ASSERT_EQ(PROP_VALUE_MAX - 1, __system_property_get(prop_name, prop_value_ret));
298 ASSERT_EQ(0, memcmp(prop_value, prop_value_ret, PROP_VALUE_MAX));
299 }
300 }
301 }
302
303 bool ok[8][8][8];
304 memset(ok, 0, sizeof(ok));
305 __system_property_foreach(hierarchical_test_callback, ok);
306
307 for (int i = 0; i < 8; i++) {
308 for (int j = 0; j < 8; j++) {
309 for (int k = 0; k < 8; k++) {
310 ASSERT_TRUE(ok[i][j][k]);
311 }
312 }
313 }
314 #else // __BIONIC__
315 GTEST_LOG_(INFO) << "This test does nothing.\n";
316 #endif // __BIONIC__
317 }
318
TEST(properties,errors)319 TEST(properties, errors) {
320 #if defined(__BIONIC__)
321 LocalPropertyTestState pa;
322 ASSERT_TRUE(pa.valid);
323 char prop_value[PROP_NAME_MAX];
324
325 ASSERT_EQ(0, __system_property_add("property", 8, "value1", 6));
326 ASSERT_EQ(0, __system_property_add("other_property", 14, "value2", 6));
327 ASSERT_EQ(0, __system_property_add("property_other", 14, "value3", 6));
328
329 ASSERT_EQ(0, __system_property_find("property1"));
330 ASSERT_EQ(0, __system_property_get("property1", prop_value));
331
332 ASSERT_EQ(-1, __system_property_add("name", PROP_NAME_MAX, "value", 5));
333 ASSERT_EQ(-1, __system_property_add("name", 4, "value", PROP_VALUE_MAX));
334 ASSERT_EQ(-1, __system_property_update(NULL, "value", PROP_VALUE_MAX));
335 #else // __BIONIC__
336 GTEST_LOG_(INFO) << "This test does nothing.\n";
337 #endif // __BIONIC__
338 }
339
TEST(properties,serial)340 TEST(properties, serial) {
341 #if defined(__BIONIC__)
342 LocalPropertyTestState pa;
343 ASSERT_TRUE(pa.valid);
344 const prop_info *pi;
345 unsigned int serial;
346
347 ASSERT_EQ(0, __system_property_add("property", 8, "value1", 6));
348 ASSERT_NE((const prop_info *)NULL, pi = __system_property_find("property"));
349 serial = __system_property_serial(pi);
350 ASSERT_EQ(0, __system_property_update((prop_info *)pi, "value2", 6));
351 ASSERT_NE(serial, __system_property_serial(pi));
352 #else // __BIONIC__
353 GTEST_LOG_(INFO) << "This test does nothing.\n";
354 #endif // __BIONIC__
355 }
356
TEST(properties,wait)357 TEST(properties, wait) {
358 #if defined(__BIONIC__)
359 LocalPropertyTestState pa;
360 ASSERT_TRUE(pa.valid);
361 unsigned int serial;
362 prop_info *pi;
363 pthread_t t;
364 int flag = 0;
365
366 ASSERT_EQ(0, __system_property_add("property", 8, "value1", 6));
367 serial = __system_property_wait_any(0);
368 pi = (prop_info *)__system_property_find("property");
369 ASSERT_NE((prop_info *)NULL, pi);
370 __system_property_update(pi, "value2", 6);
371 serial = __system_property_wait_any(serial);
372
373 ASSERT_EQ(0, pthread_create(&t, NULL, PropertyWaitHelperFn, &flag));
374 ASSERT_EQ(flag, 0);
375 serial = __system_property_wait_any(serial);
376 ASSERT_EQ(flag, 1);
377
378 void* result;
379 ASSERT_EQ(0, pthread_join(t, &result));
380 #else // __BIONIC__
381 GTEST_LOG_(INFO) << "This test does nothing.\n";
382 #endif // __BIONIC__
383 }
384
385 class KilledByFault {
386 public:
KilledByFault()387 explicit KilledByFault() {};
388 bool operator()(int exit_status) const;
389 };
390
operator ()(int exit_status) const391 bool KilledByFault::operator()(int exit_status) const {
392 return WIFSIGNALED(exit_status) &&
393 (WTERMSIG(exit_status) == SIGSEGV ||
394 WTERMSIG(exit_status) == SIGBUS ||
395 WTERMSIG(exit_status) == SIGABRT);
396 }
397
398 class properties_DeathTest : public BionicDeathTest {};
399
TEST_F(properties_DeathTest,read_only)400 TEST_F(properties_DeathTest, read_only) {
401 #if defined(__BIONIC__)
402
403 // This test only makes sense if we're talking to the real system property service.
404 struct stat sb;
405 if (stat(PROP_FILENAME, &sb) == -1 && errno == ENOENT) {
406 return;
407 }
408
409 ASSERT_EXIT(__system_property_add("property", 8, "value", 5), KilledByFault(), "");
410 #else // __BIONIC__
411 GTEST_LOG_(INFO) << "This test does nothing.\n";
412 #endif // __BIONIC__
413 }
414