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f91f1c0f | 1 | /* Global-scope DSO mapping test with a static executable (BZ #15022). |
d4697bc9 | 2 | Copyright (C) 2013-2014 Free Software Foundation, Inc. |
f91f1c0f MR |
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 | ||
27 | /* Mapping a DSO into the global scope used to crash in static | |
28 | executables. Check that it succeeds and then that symbols from | |
29 | the DSO can be accessed and operate as expected. */ | |
30 | static int | |
31 | do_test (void) | |
32 | { | |
33 | unsigned int (*getfoo) (void); | |
34 | void (*setfoo) (unsigned int); | |
35 | unsigned int *foop; | |
36 | unsigned int foo; | |
37 | void *handle; | |
38 | ||
39 | /* Try to map a module into the global scope. */ | |
40 | handle = dlopen ("modstatic3.so", RTLD_LAZY | RTLD_GLOBAL); | |
41 | if (handle == NULL) | |
42 | { | |
43 | printf ("dlopen (modstatic3.so): %s\n", dlerror ()); | |
44 | return 1; | |
45 | } | |
46 | ||
47 | /* Get at its symbols. */ | |
48 | foop = dlsym (handle, "foo"); | |
49 | if (foop == NULL) | |
50 | { | |
51 | printf ("dlsym (foo): %s\n", dlerror ()); | |
52 | return 1; | |
53 | } | |
54 | ||
55 | getfoo = dlsym (handle, "getfoo"); | |
56 | if (getfoo == NULL) | |
57 | { | |
58 | printf ("dlsym (getfoo): %s\n", dlerror ()); | |
59 | return 1; | |
60 | } | |
61 | ||
62 | setfoo = dlsym (handle, "setfoo"); | |
63 | if (setfoo == NULL) | |
64 | { | |
65 | printf ("dlsym (setfoo): %s\n", dlerror ()); | |
66 | return 1; | |
67 | } | |
68 | ||
69 | /* Make sure the view of the initial state is consistent. */ | |
70 | foo = *foop; | |
71 | if (foo != MAGIC0) | |
72 | { | |
73 | printf ("*foop: got %#x, expected %#x\n", foo, MAGIC0); | |
74 | return 1; | |
75 | } | |
76 | ||
77 | foo = getfoo (); | |
78 | if (foo != MAGIC0) | |
79 | { | |
80 | printf ("getfoo: got %#x, expected %#x\n", foo, MAGIC0); | |
81 | return 1; | |
82 | } | |
83 | ||
84 | /* Likewise with one change to its state. */ | |
85 | setfoo (MAGIC1); | |
86 | ||
87 | foo = *foop; | |
88 | if (foo != MAGIC1) | |
89 | { | |
90 | printf ("*foop: got %#x, expected %#x\n", foo, MAGIC1); | |
91 | return 1; | |
92 | } | |
93 | ||
94 | foo = getfoo (); | |
95 | if (foo != MAGIC1) | |
96 | { | |
97 | printf ("getfoo: got %#x, expected %#x\n", foo, MAGIC1); | |
98 | return 1; | |
99 | } | |
100 | ||
101 | /* And with another. */ | |
102 | setfoo (MAGIC2); | |
103 | ||
104 | foo = *foop; | |
105 | if (foo != MAGIC2) | |
106 | { | |
107 | printf ("*foop: got %#x, expected %#x\n", foo, MAGIC2); | |
108 | return 1; | |
109 | } | |
110 | ||
111 | foo = getfoo (); | |
112 | if (foo != MAGIC2) | |
113 | { | |
114 | printf ("getfoo: got %#x, expected %#x\n", foo, MAGIC2); | |
115 | return 1; | |
116 | } | |
117 | ||
118 | /* All done, clean up. */ | |
119 | getfoo = NULL; | |
120 | setfoo = NULL; | |
121 | foop = NULL; | |
122 | dlclose (handle); | |
123 | ||
124 | return 0; | |
125 | } | |
126 | ||
127 | #define TEST_FUNCTION do_test () | |
128 | #include "../test-skeleton.c" |