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9807e540 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 | ||
9807e540 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) |
9807e540 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); |
9807e540 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 | int | |
67 | main (void) | |
68 | { | |
69 | void *obj2; | |
70 | void *obj3[2]; | |
71 | const char *loaded[] = { NULL, NULL, NULL, NULL }; | |
72 | int errors = 0; | |
73 | ||
74 | printf ("\nThis is what is in memory now:\n"); | |
75 | errors += check_loaded_objects (loaded); | |
76 | printf ("\nLoading shared object neededobj2.so\n"); | |
77 | obj2 = dlopen ("neededobj2.so", RTLD_LAZY); | |
78 | if (obj2 == NULL) | |
79 | { | |
80 | printf ("%s\n", dlerror ()); | |
81 | exit (1); | |
82 | } | |
83 | loaded[0] = "neededobj1.so"; | |
84 | loaded[1] = "neededobj2.so"; | |
85 | errors += check_loaded_objects (loaded); | |
86 | printf ("\nLoading shared object neededobj3.so\n"); | |
87 | obj3[0] = dlopen( "neededobj3.so", RTLD_LAZY); | |
88 | if (obj3[0] == NULL) | |
89 | { | |
90 | printf ("%s\n", dlerror ()); | |
91 | exit (1); | |
92 | } | |
93 | loaded[2] = "neededobj3.so"; | |
94 | errors += check_loaded_objects (loaded); | |
95 | printf ("\nNow loading shared object neededobj3.so again\n"); | |
96 | obj3[1] = dlopen ("neededobj3.so", RTLD_LAZY); | |
97 | if (obj3[1] == NULL) | |
98 | { | |
99 | printf ("%s\n", dlerror ()); | |
100 | exit (1); | |
101 | } | |
102 | errors += check_loaded_objects (loaded); | |
103 | printf ("\nClosing neededobj3.so once\n"); | |
104 | dlclose (obj3[0]); | |
105 | errors += check_loaded_objects (loaded); | |
106 | printf ("\nClosing neededobj2.so\n"); | |
107 | dlclose (obj2); | |
108 | errors += check_loaded_objects (loaded); | |
109 | printf ("\nClosing neededobj3.so for the second time\n"); | |
110 | dlclose (obj3[1]); | |
111 | loaded[0] = NULL; | |
112 | loaded[1] = NULL; | |
113 | loaded[2] = NULL; | |
114 | errors += check_loaded_objects (loaded); | |
115 | if (errors != 0) | |
116 | printf ("%d errors found\n", errors); | |
117 | return errors; | |
118 | } |