1 | #include <dlfcn.h> |
2 | #include <stdio.h> |
3 | #include <stdlib.h> |
4 | |
5 | #include <link.h> |
6 | |
7 | |
8 | static int |
9 | do_test (void) |
10 | { |
11 | static const char modname1[] = "$ORIGIN/tst-tlsmod3.so" ; |
12 | static const char modname2[] = "$ORIGIN/tst-tlsmod4.so" ; |
13 | int result = 0; |
14 | int (*fp1) (void); |
15 | int (*fp2) (int, int *); |
16 | void *h1; |
17 | void *h2; |
18 | int i; |
19 | size_t modid1 = (size_t) -1; |
20 | size_t modid2 = (size_t) -1; |
21 | int *bazp; |
22 | |
23 | for (i = 0; i < 10; ++i) |
24 | { |
25 | h1 = dlopen (file: modname1, RTLD_LAZY); |
26 | if (h1 == NULL) |
27 | { |
28 | printf (format: "cannot open '%s': %s\n" , modname1, dlerror ()); |
29 | exit (status: 1); |
30 | } |
31 | |
32 | /* Dirty test code here: we peek into a private data structure. |
33 | We make sure that the module gets assigned the same ID every |
34 | time. The value of the first round is used. */ |
35 | if (modid1 == (size_t) -1) |
36 | modid1 = ((struct link_map *) h1)->l_tls_modid; |
37 | else if (((struct link_map *) h1)->l_tls_modid != modid1) |
38 | { |
39 | printf (format: "round %d: modid now %zd, initially %zd\n" , |
40 | i, ((struct link_map *) h1)->l_tls_modid, modid1); |
41 | result = 1; |
42 | } |
43 | |
44 | fp1 = dlsym (handle: h1, name: "in_dso2" ); |
45 | if (fp1 == NULL) |
46 | { |
47 | printf (format: "cannot get symbol 'in_dso2' in %s\n" , modname1); |
48 | exit (status: 1); |
49 | } |
50 | |
51 | result |= fp1 (); |
52 | |
53 | |
54 | |
55 | h2 = dlopen (file: modname2, RTLD_LAZY); |
56 | if (h2 == NULL) |
57 | { |
58 | printf (format: "cannot open '%s': %s\n" , modname2, dlerror ()); |
59 | exit (status: 1); |
60 | } |
61 | |
62 | /* Dirty test code here: we peek into a private data structure. |
63 | We make sure that the module gets assigned the same ID every |
64 | time. The value of the first round is used. */ |
65 | if (modid2 == (size_t) -1) |
66 | modid2 = ((struct link_map *) h1)->l_tls_modid; |
67 | else if (((struct link_map *) h1)->l_tls_modid != modid2) |
68 | { |
69 | printf (format: "round %d: modid now %zd, initially %zd\n" , |
70 | i, ((struct link_map *) h1)->l_tls_modid, modid2); |
71 | result = 1; |
72 | } |
73 | |
74 | bazp = dlsym (handle: h2, name: "baz" ); |
75 | if (bazp == NULL) |
76 | { |
77 | printf (format: "cannot get symbol 'baz' in %s\n" , modname2); |
78 | exit (status: 1); |
79 | } |
80 | |
81 | *bazp = 42 + i; |
82 | |
83 | fp2 = dlsym (handle: h2, name: "in_dso" ); |
84 | if (fp2 == NULL) |
85 | { |
86 | printf (format: "cannot get symbol 'in_dso' in %s\n" , modname2); |
87 | exit (status: 1); |
88 | } |
89 | |
90 | result |= fp2 (42 + i, bazp); |
91 | |
92 | dlclose (handle: h1); |
93 | dlclose (handle: h2); |
94 | |
95 | |
96 | h1 = dlopen (file: modname1, RTLD_LAZY); |
97 | if (h1 == NULL) |
98 | { |
99 | printf (format: "cannot open '%s': %s\n" , modname1, dlerror ()); |
100 | exit (status: 1); |
101 | } |
102 | |
103 | /* Dirty test code here: we peek into a private data structure. |
104 | We make sure that the module gets assigned the same ID every |
105 | time. The value of the first round is used. */ |
106 | if (((struct link_map *) h1)->l_tls_modid != modid1) |
107 | { |
108 | printf (format: "round %d: modid now %zd, initially %zd\n" , |
109 | i, ((struct link_map *) h1)->l_tls_modid, modid1); |
110 | result = 1; |
111 | } |
112 | |
113 | fp1 = dlsym (handle: h1, name: "in_dso2" ); |
114 | if (fp1 == NULL) |
115 | { |
116 | printf (format: "cannot get symbol 'in_dso2' in %s\n" , modname1); |
117 | exit (status: 1); |
118 | } |
119 | |
120 | result |= fp1 (); |
121 | |
122 | |
123 | |
124 | h2 = dlopen (file: modname2, RTLD_LAZY); |
125 | if (h2 == NULL) |
126 | { |
127 | printf (format: "cannot open '%s': %s\n" , modname2, dlerror ()); |
128 | exit (status: 1); |
129 | } |
130 | |
131 | /* Dirty test code here: we peek into a private data structure. |
132 | We make sure that the module gets assigned the same ID every |
133 | time. The value of the first round is used. */ |
134 | if (((struct link_map *) h1)->l_tls_modid != modid2) |
135 | { |
136 | printf (format: "round %d: modid now %zd, initially %zd\n" , |
137 | i, ((struct link_map *) h1)->l_tls_modid, modid2); |
138 | result = 1; |
139 | } |
140 | |
141 | bazp = dlsym (handle: h2, name: "baz" ); |
142 | if (bazp == NULL) |
143 | { |
144 | printf (format: "cannot get symbol 'baz' in %s\n" , modname2); |
145 | exit (status: 1); |
146 | } |
147 | |
148 | *bazp = 62 + i; |
149 | |
150 | fp2 = dlsym (handle: h2, name: "in_dso" ); |
151 | if (fp2 == NULL) |
152 | { |
153 | printf (format: "cannot get symbol 'in_dso' in %s\n" , modname2); |
154 | exit (status: 1); |
155 | } |
156 | |
157 | result |= fp2 (62 + i, bazp); |
158 | |
159 | /* This time the dlclose calls are in reverse order. */ |
160 | dlclose (handle: h2); |
161 | dlclose (handle: h1); |
162 | } |
163 | |
164 | return result; |
165 | } |
166 | |
167 | #include <support/test-driver.c> |
168 | |