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1 | /* Global object symbol access tests with a static executable (BZ #15022). | |
2 | Copyright (C) 2013 Free Software Foundation, Inc. | |
3 | This file is part of the GNU C Library. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <dlfcn.h> | |
20 | #include <stddef.h> | |
21 | #include <stdio.h> | |
22 | ||
23 | #define MAGIC0 0 | |
24 | #define MAGIC1 0x5500ffaa | |
25 | #define MAGIC2 0xaaff0055 | |
26 | #define MAGIC3 0xff55aa00 | |
27 | ||
28 | /* Check the ability to access the global symbol object and then | |
29 | global-scope symbol access consistency via different mappings | |
30 | requested from a static executable. */ | |
31 | static int | |
32 | do_test (void) | |
33 | { | |
34 | unsigned int (*initial_getfoo) (void); | |
35 | void (*initial_setfoo) (unsigned int); | |
36 | unsigned int (*global_getfoo) (void); | |
37 | void (*global_setfoo) (unsigned int); | |
38 | unsigned int (*local_getfoo) (void); | |
39 | void (*local_setfoo) (unsigned int); | |
40 | unsigned int *initial_foop; | |
41 | unsigned int *global_foop; | |
42 | unsigned int *local_foop; | |
43 | void *initial_handle; | |
44 | void *global_handle; | |
45 | void *local_handle; | |
46 | unsigned int foo; | |
47 | ||
48 | /* Try to map self. */ | |
49 | initial_handle = dlopen (NULL, RTLD_LAZY | RTLD_GLOBAL); | |
50 | if (initial_handle == NULL) | |
51 | { | |
52 | printf ("dlopen [initial] (NULL): %s\n", dlerror ()); | |
53 | return 1; | |
54 | } | |
55 | ||
56 | /* Make sure symbol lookups fail gracefully. */ | |
57 | initial_foop = dlsym (initial_handle, "foo"); | |
58 | if (initial_foop != NULL) | |
59 | { | |
60 | printf ("dlsym [initial] (foo): got %p, expected NULL\n", initial_foop); | |
61 | return 1; | |
62 | } | |
63 | ||
64 | initial_getfoo = dlsym (initial_handle, "getfoo"); | |
65 | if (initial_getfoo != NULL) | |
66 | { | |
67 | printf ("dlsym [initial] (getfoo): got %p, expected NULL\n", | |
68 | initial_getfoo); | |
69 | return 1; | |
70 | } | |
71 | ||
72 | initial_setfoo = dlsym (initial_handle, "setfoo"); | |
73 | if (initial_setfoo != NULL) | |
74 | { | |
75 | printf ("dlsym [initial] (setfoo): got %p, expected NULL\n", | |
76 | initial_setfoo); | |
77 | return 1; | |
78 | } | |
79 | ||
80 | /* Try to map a module into the global scope. */ | |
81 | global_handle = dlopen ("modstatic3.so", RTLD_LAZY | RTLD_GLOBAL); | |
82 | if (global_handle == NULL) | |
83 | { | |
84 | printf ("dlopen [global] (modstatic3.so): %s\n", dlerror ()); | |
85 | return 1; | |
86 | } | |
87 | ||
88 | /* Get at its symbols. */ | |
89 | global_foop = dlsym (global_handle, "foo"); | |
90 | if (global_foop == NULL) | |
91 | { | |
92 | printf ("dlsym [global] (foo): %s\n", dlerror ()); | |
93 | return 1; | |
94 | } | |
95 | ||
96 | global_getfoo = dlsym (global_handle, "getfoo"); | |
97 | if (global_getfoo == NULL) | |
98 | { | |
99 | printf ("dlsym [global] (getfoo): %s\n", dlerror ()); | |
100 | return 1; | |
101 | } | |
102 | ||
103 | global_setfoo = dlsym (global_handle, "setfoo"); | |
104 | if (global_setfoo == NULL) | |
105 | { | |
106 | printf ("dlsym [global] (setfoo): %s\n", dlerror ()); | |
107 | return 1; | |
108 | } | |
109 | ||
110 | /* Try to map self again now. */ | |
111 | local_handle = dlopen (NULL, RTLD_LAZY | RTLD_LOCAL); | |
112 | if (local_handle == NULL) | |
113 | { | |
114 | printf ("dlopen [local] (NULL): %s\n", dlerror ()); | |
115 | return 1; | |
116 | } | |
117 | ||
118 | /* Make sure we can get at the previously loaded module's symbols | |
119 | via this handle too. */ | |
120 | local_foop = dlsym (local_handle, "foo"); | |
121 | if (local_foop == NULL) | |
122 | { | |
123 | printf ("dlsym [local] (foo): %s\n", dlerror ()); | |
124 | return 1; | |
125 | } | |
126 | ||
127 | local_getfoo = dlsym (local_handle, "getfoo"); | |
128 | if (local_getfoo == NULL) | |
129 | { | |
130 | printf ("dlsym [local] (getfoo): %s\n", dlerror ()); | |
131 | return 1; | |
132 | } | |
133 | ||
134 | local_setfoo = dlsym (local_handle, "setfoo"); | |
135 | if (local_setfoo == NULL) | |
136 | { | |
137 | printf ("dlsym [local] (setfoo): %s\n", dlerror ()); | |
138 | return 1; | |
139 | } | |
140 | ||
141 | /* Make sure we can get at the previously loaded module's symbols | |
142 | via a handle that was obtained before the module was loaded too. */ | |
143 | initial_foop = dlsym (initial_handle, "foo"); | |
144 | if (initial_foop == NULL) | |
145 | { | |
146 | printf ("dlsym [initial] (foo): %s\n", dlerror ()); | |
147 | return 1; | |
148 | } | |
149 | ||
150 | initial_getfoo = dlsym (initial_handle, "getfoo"); | |
151 | if (initial_getfoo == NULL) | |
152 | { | |
153 | printf ("dlsym [initial] (getfoo): %s\n", dlerror ()); | |
154 | return 1; | |
155 | } | |
156 | ||
157 | initial_setfoo = dlsym (initial_handle, "setfoo"); | |
158 | if (initial_setfoo == NULL) | |
159 | { | |
160 | printf ("dlsym [initial] (setfoo): %s\n", dlerror ()); | |
161 | return 1; | |
162 | } | |
163 | ||
164 | /* Make sure the view of the initial state is consistent. */ | |
165 | foo = *initial_foop; | |
166 | if (foo != MAGIC0) | |
167 | { | |
168 | printf ("*foop [initial]: got %#x, expected %#x\n", foo, MAGIC0); | |
169 | return 1; | |
170 | } | |
171 | ||
172 | foo = *global_foop; | |
173 | if (foo != MAGIC0) | |
174 | { | |
175 | printf ("*foop [global]: got %#x, expected %#x\n", foo, MAGIC0); | |
176 | return 1; | |
177 | } | |
178 | ||
179 | foo = *local_foop; | |
180 | if (foo != MAGIC0) | |
181 | { | |
182 | printf ("*foop [local]: got %#x, expected %#x\n", foo, MAGIC0); | |
183 | return 1; | |
184 | } | |
185 | ||
186 | foo = initial_getfoo (); | |
187 | if (foo != MAGIC0) | |
188 | { | |
189 | printf ("getfoo [initial]: got %#x, expected %#x\n", foo, MAGIC0); | |
190 | return 1; | |
191 | } | |
192 | ||
193 | foo = global_getfoo (); | |
194 | if (foo != MAGIC0) | |
195 | { | |
196 | printf ("getfoo [global]: got %#x, expected %#x\n", foo, MAGIC0); | |
197 | return 1; | |
198 | } | |
199 | ||
200 | foo = local_getfoo (); | |
201 | if (foo != MAGIC0) | |
202 | { | |
203 | printf ("getfoo [local]: got %#x, expected %#x\n", foo, MAGIC0); | |
204 | return 1; | |
205 | } | |
206 | ||
207 | /* Likewise with a change to its state made through the first handle. */ | |
208 | initial_setfoo (MAGIC1); | |
209 | ||
210 | foo = *initial_foop; | |
211 | if (foo != MAGIC1) | |
212 | { | |
213 | printf ("*foop [initial]: got %#x, expected %#x\n", foo, MAGIC1); | |
214 | return 1; | |
215 | } | |
216 | ||
217 | foo = *global_foop; | |
218 | if (foo != MAGIC1) | |
219 | { | |
220 | printf ("*foop [global]: got %#x, expected %#x\n", foo, MAGIC1); | |
221 | return 1; | |
222 | } | |
223 | ||
224 | foo = *local_foop; | |
225 | if (foo != MAGIC1) | |
226 | { | |
227 | printf ("*foop [local]: got %#x, expected %#x\n", foo, MAGIC1); | |
228 | return 1; | |
229 | } | |
230 | ||
231 | foo = initial_getfoo (); | |
232 | if (foo != MAGIC1) | |
233 | { | |
234 | printf ("getfoo [initial]: got %#x, expected %#x\n", foo, MAGIC1); | |
235 | return 1; | |
236 | } | |
237 | ||
238 | foo = global_getfoo (); | |
239 | if (foo != MAGIC1) | |
240 | { | |
241 | printf ("getfoo [global]: got %#x, expected %#x\n", foo, MAGIC1); | |
242 | return 1; | |
243 | } | |
244 | ||
245 | foo = local_getfoo (); | |
246 | if (foo != MAGIC1) | |
247 | { | |
248 | printf ("getfoo [local]: got %#x, expected %#x\n", foo, MAGIC1); | |
249 | return 1; | |
250 | } | |
251 | ||
252 | /* Likewise with a change to its state made through the second handle. */ | |
253 | global_setfoo (MAGIC2); | |
254 | ||
255 | foo = *initial_foop; | |
256 | if (foo != MAGIC2) | |
257 | { | |
258 | printf ("*foop [initial]: got %#x, expected %#x\n", foo, MAGIC2); | |
259 | return 1; | |
260 | } | |
261 | ||
262 | foo = *global_foop; | |
263 | if (foo != MAGIC2) | |
264 | { | |
265 | printf ("*foop [global]: got %#x, expected %#x\n", foo, MAGIC2); | |
266 | return 1; | |
267 | } | |
268 | ||
269 | foo = *local_foop; | |
270 | if (foo != MAGIC2) | |
271 | { | |
272 | printf ("*foop [local]: got %#x, expected %#x\n", foo, MAGIC2); | |
273 | return 1; | |
274 | } | |
275 | ||
276 | foo = initial_getfoo (); | |
277 | if (foo != MAGIC2) | |
278 | { | |
279 | printf ("getfoo [initial]: got %#x, expected %#x\n", foo, MAGIC2); | |
280 | return 1; | |
281 | } | |
282 | ||
283 | foo = global_getfoo (); | |
284 | if (foo != MAGIC2) | |
285 | { | |
286 | printf ("getfoo [global]: got %#x, expected %#x\n", foo, MAGIC2); | |
287 | return 1; | |
288 | } | |
289 | ||
290 | foo = local_getfoo (); | |
291 | if (foo != MAGIC2) | |
292 | { | |
293 | printf ("getfoo [local]: got %#x, expected %#x\n", foo, MAGIC2); | |
294 | return 1; | |
295 | } | |
296 | ||
297 | /* Likewise with a change to its state made through the third handle. */ | |
298 | local_setfoo (MAGIC3); | |
299 | ||
300 | foo = *initial_foop; | |
301 | if (foo != MAGIC3) | |
302 | { | |
303 | printf ("*foop [initial]: got %#x, expected %#x\n", foo, MAGIC3); | |
304 | return 1; | |
305 | } | |
306 | ||
307 | foo = *global_foop; | |
308 | if (foo != MAGIC3) | |
309 | { | |
310 | printf ("*foop [global]: got %#x, expected %#x\n", foo, MAGIC3); | |
311 | return 1; | |
312 | } | |
313 | ||
314 | foo = *local_foop; | |
315 | if (foo != MAGIC3) | |
316 | { | |
317 | printf ("*foop [local]: got %#x, expected %#x\n", foo, MAGIC3); | |
318 | return 1; | |
319 | } | |
320 | ||
321 | foo = initial_getfoo (); | |
322 | if (foo != MAGIC3) | |
323 | { | |
324 | printf ("getfoo [initial]: got %#x, expected %#x\n", foo, MAGIC3); | |
325 | return 1; | |
326 | } | |
327 | ||
328 | foo = global_getfoo (); | |
329 | if (foo != MAGIC3) | |
330 | { | |
331 | printf ("getfoo [global]: got %#x, expected %#x\n", foo, MAGIC3); | |
332 | return 1; | |
333 | } | |
334 | ||
335 | foo = local_getfoo (); | |
336 | if (foo != MAGIC3) | |
337 | { | |
338 | printf ("getfoo [local]: got %#x, expected %#x\n", foo, MAGIC3); | |
339 | return 1; | |
340 | } | |
341 | ||
342 | /* All done, clean up. */ | |
343 | initial_getfoo = NULL; | |
344 | initial_setfoo = NULL; | |
345 | initial_foop = NULL; | |
346 | ||
347 | local_getfoo = NULL; | |
348 | local_setfoo = NULL; | |
349 | local_foop = NULL; | |
350 | dlclose (local_handle); | |
351 | ||
352 | global_getfoo = NULL; | |
353 | global_setfoo = NULL; | |
354 | global_foop = NULL; | |
355 | dlclose (global_handle); | |
356 | ||
357 | dlclose (initial_handle); | |
358 | ||
359 | return 0; | |
360 | } | |
361 | ||
362 | #define TEST_FUNCTION do_test () | |
363 | #include "../test-skeleton.c" |