1 /* $OpenBSD: main.c,v 1.1.1.1 2005/09/30 15:14:46 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
main()23 main()
24 {
25 int ret = 0;
26 int (*bbTest2)(void);
27 void *libbb;
28 void *libaa;
29
30 libaa = dlopen("libaa.so", RTLD_LAZY|RTLD_GLOBAL);
31 libbb = dlopen("libbb.so", RTLD_LAZY|RTLD_GLOBAL);
32
33 if (libaa == NULL) {
34 printf("dlopen(\"libaa.so\", RTLD_LAZY|RTLD_GLOBAL) FAILED\n");
35 return (1);
36 }
37
38 if (libbb == NULL) {
39 printf("dlopen(\"libbb.so\", RTLD_LAZY|RTLD_GLOBAL) FAILED\n");
40 return (1);
41 }
42
43 bbTest2 = dlsym(libbb, "bbTest2");
44
45 /* call bbTest2 to force lazy binding to duplicateFun in libaa */
46 (*bbTest2)();
47
48 dlclose(libaa);
49
50 /* call bbTest2 again to ensure libaa was not unloaded (still needed) */
51 ret = (*bbTest2)();
52
53 dlclose(libbb);
54
55 return (ret);
56 }
57