1 /* $OpenBSD: main.c,v 1.3 2005/11/09 16:36:06 kurt Exp $ */
2
3 /*
4 * Copyright (c) 2005 Kurt Miller <kurt@openbsd.org>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <dlfcn.h>
20 #include <stdio.h>
21
22 int mainSymbol;
23
24 /*
25 * This tests that the main object group can see the symbols in
26 * objects dlopened with RTLD_GLOBAL for RTLD_{DEFAULT,NEXT,SELF},
27 * but not with NULL, or with a handle.
28 */
29 int
main()30 main()
31 {
32 int ret = 0;
33 void *exe_handle = dlopen(NULL, RTLD_LAZY);
34 void *libbb = dlopen("libbb.so", RTLD_LAZY|RTLD_GLOBAL);
35
36 if (libbb == NULL) {
37 printf("dlopen(\"libbb.so\", RTLD_LAZY|RTLD_GLOBAL) FAILED\n");
38 return (1);
39 }
40
41 /* RTLD_DEFAULT should see bbSymbol */
42 if (dlsym(RTLD_DEFAULT, "bbSymbol") == NULL) {
43 printf("dlsym(RTLD_DEFAULT, \"bbSymbol\") == NULL\n");
44 ret = 1;
45 }
46
47 /* RTLD_SELF should see bbSymbol (RTLD_GLOBAL load group) */
48 if (dlsym(RTLD_SELF, "bbSymbol") == NULL) {
49 printf("dlsym(RTLD_SELF, \"bbSymbol\") == NULL\n");
50 ret = 1;
51 }
52
53 /* RTLD_NEXT should see bbSymbol (RTLD_GLOBAL load group) */
54 if (dlsym(RTLD_NEXT, "bbSymbol") == NULL) {
55 printf("dlsym(RTLD_NEXT, \"bbSymbol\") == NULL\n");
56 ret = 1;
57 }
58
59 /* NULL should *not* see bbSymbol (different load group) */
60 if (dlsym(NULL, "bbSymbol") != NULL) {
61 printf("dlsym(NULL, \"bbSymbol\") != NULL\n");
62 ret = 1;
63 }
64
65 /* exe handle should see bbSymbol (Same as RTLD_DEFAULT) */
66 if (dlsym(exe_handle, "bbSymbol") == NULL) {
67 printf("dlsym(exe_handle, \"bbSymbol\") == NULL\n");
68 ret = 1;
69 }
70
71 dlclose(exe_handle);
72 dlclose(libbb);
73
74 return (ret);
75 }
76