aboutsummaryrefslogtreecommitdiff
path: root/dlfcn/tststatic4.c
blob: a05f794207d9e174c92dcbe5565a37f785132a63 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
/* Global object symbol access tests with a static executable (BZ #15022).
   Copyright (C) 2013-2021 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#include <dlfcn.h>
#include <stddef.h>
#include <stdio.h>

#define MAGIC0 0
#define MAGIC1 0x5500ffaa
#define MAGIC2 0xaaff0055
#define MAGIC3 0xff55aa00

/* Check the ability to access the global symbol object and then
   global-scope symbol access consistency via different mappings
   requested from a static executable.  */
static int
do_test (void)
{
  unsigned int (*initial_getfoo) (void);
  void (*initial_setfoo) (unsigned int);
  unsigned int (*global_getfoo) (void);
  void (*global_setfoo) (unsigned int);
  unsigned int (*local_getfoo) (void);
  void (*local_setfoo) (unsigned int);
  unsigned int *initial_foop;
  unsigned int *global_foop;
  unsigned int *local_foop;
  void *initial_handle;
  void *global_handle;
  void *local_handle;
  unsigned int foo;

  /* Try to map self.  */
  initial_handle = dlopen (NULL, RTLD_LAZY | RTLD_GLOBAL);
  if (initial_handle == NULL)
    {
      printf ("dlopen [initial] (NULL): %s\n", dlerror ());
      return 1;
    }

  /* Make sure symbol lookups fail gracefully.  */
  initial_foop = dlsym (initial_handle, "foo");
  if (initial_foop != NULL)
    {
      printf ("dlsym [initial] (foo): got %p, expected NULL\n", initial_foop);
      return 1;
    }

  initial_getfoo = dlsym (initial_handle, "getfoo");
  if (initial_getfoo != NULL)
    {
      printf ("dlsym [initial] (getfoo): got %p, expected NULL\n",
	      initial_getfoo);
      return 1;
    }

  initial_setfoo = dlsym (initial_handle, "setfoo");
  if (initial_setfoo != NULL)
    {
      printf ("dlsym [initial] (setfoo): got %p, expected NULL\n",
	      initial_setfoo);
      return 1;
    }

  /* Try to map a module into the global scope.  */
  global_handle = dlopen ("modstatic3.so", RTLD_LAZY | RTLD_GLOBAL);
  if (global_handle == NULL)
    {
      printf ("dlopen [global] (modstatic3.so): %s\n", dlerror ());
      return 1;
    }

  /* Get at its symbols.  */
  global_foop = dlsym (global_handle, "foo");
  if (global_foop == NULL)
    {
      printf ("dlsym [global] (foo): %s\n", dlerror ());
      return 1;
    }

  global_getfoo = dlsym (global_handle, "getfoo");
  if (global_getfoo == NULL)
    {
      printf ("dlsym [global] (getfoo): %s\n", dlerror ());
      return 1;
    }

  global_setfoo = dlsym (global_handle, "setfoo");
  if (global_setfoo == NULL)
    {
      printf ("dlsym [global] (setfoo): %s\n", dlerror ());
      return 1;
    }

  /* Try to map self again now.  */
  local_handle = dlopen (NULL, RTLD_LAZY | RTLD_LOCAL);
  if (local_handle == NULL)
    {
      printf ("dlopen [local] (NULL): %s\n", dlerror ());
      return 1;
    }

  /* Make sure we can get at the previously loaded module's symbols
     via this handle too.  */
  local_foop = dlsym (local_handle, "foo");
  if (local_foop == NULL)
    {
      printf ("dlsym [local] (foo): %s\n", dlerror ());
      return 1;
    }

  local_getfoo = dlsym (local_handle, "getfoo");
  if (local_getfoo == NULL)
    {
      printf ("dlsym [local] (getfoo): %s\n", dlerror ());
      return 1;
    }

  local_setfoo = dlsym (local_handle, "setfoo");
  if (local_setfoo == NULL)
    {
      printf ("dlsym [local] (setfoo): %s\n", dlerror ());
      return 1;
    }

  /* Make sure we can get at the previously loaded module's symbols
     via a handle that was obtained before the module was loaded too.  */
  initial_foop = dlsym (initial_handle, "foo");
  if (initial_foop == NULL)
    {
      printf ("dlsym [initial] (foo): %s\n", dlerror ());
      return 1;
    }

  initial_getfoo = dlsym (initial_handle, "getfoo");
  if (initial_getfoo == NULL)
    {
      printf ("dlsym [initial] (getfoo): %s\n", dlerror ());
      return 1;
    }

  initial_setfoo = dlsym (initial_handle, "setfoo");
  if (initial_setfoo == NULL)
    {
      printf ("dlsym [initial] (setfoo): %s\n", dlerror ());
      return 1;
    }

  /* Make sure the view of the initial state is consistent.  */
  foo = *initial_foop;
  if (foo != MAGIC0)
    {
      printf ("*foop [initial]: got %#x, expected %#x\n", foo, MAGIC0);
      return 1;
    }

  foo = *global_foop;
  if (foo != MAGIC0)
    {
      printf ("*foop [global]: got %#x, expected %#x\n", foo, MAGIC0);
      return 1;
    }

  foo = *local_foop;
  if (foo != MAGIC0)
    {
      printf ("*foop [local]: got %#x, expected %#x\n", foo, MAGIC0);
      return 1;
    }

  foo = initial_getfoo ();
  if (foo != MAGIC0)
    {
      printf ("getfoo [initial]: got %#x, expected %#x\n", foo, MAGIC0);
      return 1;
    }

  foo = global_getfoo ();
  if (foo != MAGIC0)
    {
      printf ("getfoo [global]: got %#x, expected %#x\n", foo, MAGIC0);
      return 1;
    }

  foo = local_getfoo ();
  if (foo != MAGIC0)
    {
      printf ("getfoo [local]: got %#x, expected %#x\n", foo, MAGIC0);
      return 1;
    }

  /* Likewise with a change to its state made through the first handle.  */
  initial_setfoo (MAGIC1);

  foo = *initial_foop;
  if (foo != MAGIC1)
    {
      printf ("*foop [initial]: got %#x, expected %#x\n", foo, MAGIC1);
      return 1;
    }

  foo = *global_foop;
  if (foo != MAGIC1)
    {
      printf ("*foop [global]: got %#x, expected %#x\n", foo, MAGIC1);
      return 1;
    }

  foo = *local_foop;
  if (foo != MAGIC1)
    {
      printf ("*foop [local]: got %#x, expected %#x\n", foo, MAGIC1);
      return 1;
    }

  foo = initial_getfoo ();
  if (foo != MAGIC1)
    {
      printf ("getfoo [initial]: got %#x, expected %#x\n", foo, MAGIC1);
      return 1;
    }

  foo = global_getfoo ();
  if (foo != MAGIC1)
    {
      printf ("getfoo [global]: got %#x, expected %#x\n", foo, MAGIC1);
      return 1;
    }

  foo = local_getfoo ();
  if (foo != MAGIC1)
    {
      printf ("getfoo [local]: got %#x, expected %#x\n", foo, MAGIC1);
      return 1;
    }

  /* Likewise with a change to its state made through the second handle.  */
  global_setfoo (MAGIC2);

  foo = *initial_foop;
  if (foo != MAGIC2)
    {
      printf ("*foop [initial]: got %#x, expected %#x\n", foo, MAGIC2);
      return 1;
    }

  foo = *global_foop;
  if (foo != MAGIC2)
    {
      printf ("*foop [global]: got %#x, expected %#x\n", foo, MAGIC2);
      return 1;
    }

  foo = *local_foop;
  if (foo != MAGIC2)
    {
      printf ("*foop [local]: got %#x, expected %#x\n", foo, MAGIC2);
      return 1;
    }

  foo = initial_getfoo ();
  if (foo != MAGIC2)
    {
      printf ("getfoo [initial]: got %#x, expected %#x\n", foo, MAGIC2);
      return 1;
    }

  foo = global_getfoo ();
  if (foo != MAGIC2)
    {
      printf ("getfoo [global]: got %#x, expected %#x\n", foo, MAGIC2);
      return 1;
    }

  foo = local_getfoo ();
  if (foo != MAGIC2)
    {
      printf ("getfoo [local]: got %#x, expected %#x\n", foo, MAGIC2);
      return 1;
    }

  /* Likewise with a change to its state made through the third handle.  */
  local_setfoo (MAGIC3);

  foo = *initial_foop;
  if (foo != MAGIC3)
    {
      printf ("*foop [initial]: got %#x, expected %#x\n", foo, MAGIC3);
      return 1;
    }

  foo = *global_foop;
  if (foo != MAGIC3)
    {
      printf ("*foop [global]: got %#x, expected %#x\n", foo, MAGIC3);
      return 1;
    }

  foo = *local_foop;
  if (foo != MAGIC3)
    {
      printf ("*foop [local]: got %#x, expected %#x\n", foo, MAGIC3);
      return 1;
    }

  foo = initial_getfoo ();
  if (foo != MAGIC3)
    {
      printf ("getfoo [initial]: got %#x, expected %#x\n", foo, MAGIC3);
      return 1;
    }

  foo = global_getfoo ();
  if (foo != MAGIC3)
    {
      printf ("getfoo [global]: got %#x, expected %#x\n", foo, MAGIC3);
      return 1;
    }

  foo = local_getfoo ();
  if (foo != MAGIC3)
    {
      printf ("getfoo [local]: got %#x, expected %#x\n", foo, MAGIC3);
      return 1;
    }

  /* All done, clean up.  */
  initial_getfoo = NULL;
  initial_setfoo = NULL;
  initial_foop = NULL;

  local_getfoo = NULL;
  local_setfoo = NULL;
  local_foop = NULL;
  dlclose (local_handle);

  global_getfoo = NULL;
  global_setfoo = NULL;
  global_foop = NULL;
  dlclose (global_handle);

  dlclose (initial_handle);

  return 0;
}

#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"