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Commit | Line | Data |
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6d78cd00 UD |
1 | #include <dlfcn.h> |
2 | #include <libintl.h> | |
3 | #include <link.h> | |
4 | #include <stdio.h> | |
5 | #include <stdlib.h> | |
6 | #include <string.h> | |
7 | ||
d78efd9f RM |
8 | #define MAPS ((struct link_map *) _r_debug.r_map) |
9 | ||
6d78cd00 UD |
10 | static int |
11 | check_loaded_objects (const char **loaded) | |
12 | { | |
13 | struct link_map *lm; | |
14 | int n; | |
15 | int *found = NULL; | |
16 | int errors = 0; | |
17 | ||
18 | for (n = 0; loaded[n]; n++) | |
19 | /* NOTHING */; | |
20 | ||
21 | if (n) | |
22 | { | |
23 | found = (int *) alloca (sizeof (int) * n); | |
24 | memset (found, 0, sizeof (int) * n); | |
25 | } | |
26 | ||
27 | printf(" Name\n"); | |
28 | printf(" --------------------------------------------------------\n"); | |
d78efd9f | 29 | for (lm = MAPS; lm; lm = lm->l_next) |
6d78cd00 UD |
30 | { |
31 | if (lm->l_name && lm->l_name[0]) | |
20fe49b9 | 32 | printf(" %s, count = %d\n", lm->l_name, (int) lm->l_direct_opencount); |
6d78cd00 UD |
33 | if (lm->l_type == lt_loaded && lm->l_name) |
34 | { | |
35 | int match = 0; | |
36 | for (n = 0; loaded[n] != NULL; n++) | |
37 | { | |
38 | if (strcmp (basename (loaded[n]), basename (lm->l_name)) == 0) | |
39 | { | |
40 | found[n] = 1; | |
41 | match = 1; | |
42 | break; | |
43 | } | |
44 | } | |
45 | ||
46 | if (match == 0) | |
47 | { | |
48 | ++errors; | |
49 | printf ("ERRORS: %s is not unloaded\n", lm->l_name); | |
50 | } | |
51 | } | |
52 | } | |
53 | ||
54 | for (n = 0; loaded[n] != NULL; n++) | |
55 | { | |
56 | if (found[n] == 0) | |
57 | { | |
58 | ++errors; | |
59 | printf ("ERRORS: %s is not loaded\n", loaded[n]); | |
60 | } | |
61 | } | |
62 | ||
63 | return errors; | |
64 | } | |
65 | ||
66 | static int | |
67 | load_dso (const char **loading, int undef, int flag) | |
68 | { | |
69 | void *obj; | |
70 | const char *loaded[] = { NULL, NULL, NULL, NULL }; | |
71 | int errors = 0; | |
72 | const char *errstring; | |
73 | ||
74 | printf ("\nThis is what is in memory now:\n"); | |
75 | errors += check_loaded_objects (loaded); | |
76 | ||
1087e371 | 77 | printf ("Loading shared object %s: %s\n", loading[0], |
6d78cd00 | 78 | flag == RTLD_LAZY ? "RTLD_LAZY" : "RTLD_NOW"); |
1087e371 | 79 | obj = dlopen (loading[0], flag); |
6d78cd00 UD |
80 | if (obj == NULL) |
81 | { | |
82 | if (flag == RTLD_LAZY) | |
83 | { | |
84 | ++errors; | |
85 | printf ("ERRORS: dlopen shouldn't fail for RTLD_LAZY\n"); | |
86 | } | |
87 | ||
88 | errstring = dlerror (); | |
89 | if (strstr (errstring, "undefined symbol") == 0 | |
90 | || strstr (errstring, "circlemod2_undefined") == 0) | |
91 | { | |
92 | ++errors; | |
93 | printf ("ERRORS: dlopen: `%s': Invalid error string\n", | |
94 | errstring); | |
95 | } | |
96 | else | |
97 | printf ("dlopen: %s\n", errstring); | |
98 | } | |
99 | else | |
100 | { | |
101 | if (undef && flag == RTLD_NOW) | |
102 | { | |
103 | ++errors; | |
104 | printf ("ERRORS: dlopen shouldn't work for RTLD_NOW\n"); | |
105 | } | |
106 | ||
11fa51b8 UD |
107 | if (!undef) |
108 | { | |
109 | int (*func) (void); | |
110 | ||
111 | func = dlsym (obj, "circlemod1"); | |
112 | if (func == NULL) | |
113 | { | |
114 | ++errors; | |
115 | printf ("ERRORS: cannot get address of \"circlemod1\": %s\n", | |
116 | dlerror ()); | |
117 | } | |
118 | else if (func () != 3) | |
119 | { | |
120 | ++errors; | |
121 | printf ("ERRORS: function \"circlemod1\" returned wrong result\n"); | |
122 | } | |
123 | } | |
124 | ||
1087e371 UD |
125 | loaded[0] = loading[0]; |
126 | loaded[1] = loading[1]; | |
127 | loaded[2] = loading[2]; | |
6d78cd00 UD |
128 | } |
129 | errors += check_loaded_objects (loaded); | |
130 | ||
131 | if (obj) | |
132 | { | |
1087e371 | 133 | printf ("UnLoading shared object %s\n", loading[0]); |
6d78cd00 UD |
134 | dlclose (obj); |
135 | loaded[0] = NULL; | |
136 | loaded[1] = NULL; | |
137 | loaded[2] = NULL; | |
138 | errors += check_loaded_objects (loaded); | |
139 | } | |
140 | ||
141 | return errors; | |
142 | } | |
143 | ||
144 | int | |
145 | main (void) | |
146 | { | |
147 | int errors = 0; | |
148 | const char *loading[3]; | |
149 | ||
1087e371 UD |
150 | loading[0] = "circlemod1a.so"; |
151 | loading[1] = "circlemod2a.so"; | |
152 | loading[2] = "circlemod3a.so"; | |
6d78cd00 UD |
153 | errors += load_dso (loading, 0, RTLD_LAZY); |
154 | errors += load_dso (loading, 0, RTLD_NOW); | |
155 | ||
1087e371 UD |
156 | loading[0] = "circlemod1.so"; |
157 | loading[1] = "circlemod2.so"; | |
158 | loading[2] = "circlemod3.so"; | |
6d78cd00 UD |
159 | errors += load_dso (loading, 1, RTLD_LAZY); |
160 | errors += load_dso (loading, 1, RTLD_NOW); | |
161 | ||
162 | if (errors != 0) | |
163 | printf ("%d errors found\n", errors); | |
164 | ||
165 | return errors; | |
166 | } |