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
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