1/*-
2 * Copyright (c) 2011 The NetBSD Foundation, Inc.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to The NetBSD Foundation
6 * by Joerg Sonnenberger.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#include <dlfcn.h>
31#include <link_elf.h>
32#include <pthread.h>
33#include <stdlib.h>
34#include <stdio.h>
35#include <string.h>
36#include <unistd.h>
37
38int sleep_init;
39int sleep_fini;
40int dlopen_cookie;
41int dlclose_cookie;
42
43void (*tls_callback_sym)(void);
44
45static int
46dl_iterate_phdr_cb(struct dl_phdr_info *info, size_t size, void *data)
47{
48	(*tls_callback_sym)();
49	return 0;
50}
51
52static void *
53test_dl_iterate_phdr_helper(void *dummy)
54{
55	sleep(10);
56	_exit(1);
57}
58
59static void
60test_dl_iterate_phdr(void)
61{
62	pthread_t t;
63	void *dso;
64	sleep_init = 0;
65	sleep_fini = 0;
66	if ((dso = dlopen("libh_helper_dso2.so", RTLD_LAZY)) == NULL) {
67		fprintf(stderr, "opening helper failed\n");
68		_exit(1);
69	}
70	tls_callback_sym = dlsym(dso, "tls_callback");
71	if (tls_callback_sym == NULL) {
72		fprintf(stderr, "bad helper\n");
73		_exit(1);
74	}
75	pthread_create(&t, NULL, test_dl_iterate_phdr_helper, NULL);
76	if (dl_iterate_phdr(dl_iterate_phdr_cb, NULL))
77		_exit(1);
78	_exit(0);
79}
80
81static void *
82init_fini_helper(void *arg)
83{
84	void *dso;
85	if ((dso = dlopen(arg, RTLD_LAZY)) == NULL) {
86		fprintf(stderr, "opening %s failed\n", (char *)arg);
87		exit(1);
88	}
89	dlclose(dso);
90	return NULL;
91}
92
93static void
94test_dlopen(void)
95{
96	pthread_t t1, t2;
97	sleep_init = 1;
98	sleep_fini = 0;
99	printf("%d\n", dlopen_cookie);
100	pthread_create(&t1, NULL, init_fini_helper,
101	    __UNCONST("libh_helper_dso2.so"));
102	sleep(1);
103	printf("%d\n", dlopen_cookie);
104	if (dlopen_cookie != 1)
105		_exit(1);
106	sleep(1);
107	pthread_create(&t2, NULL, init_fini_helper,
108	    __UNCONST("libutil.so"));
109	printf("%d\n", dlopen_cookie);
110	if (dlopen_cookie != 1)
111		_exit(1);
112	_exit(0);
113}
114
115static void
116test_dlclose(void)
117{
118	pthread_t t1, t2;
119	sleep_init = 0;
120	sleep_fini = 1;
121	printf("%d\n", dlclose_cookie);
122	pthread_create(&t1, NULL, init_fini_helper,
123	    __UNCONST("libh_helper_dso2.so"));
124	sleep(1);
125	printf("%d\n", dlclose_cookie);
126	if (dlclose_cookie != 2)
127		_exit(1);
128	pthread_create(&t2, NULL, init_fini_helper,
129	    __UNCONST("libutil.so"));
130	sleep(1);
131	printf("%d\n", dlclose_cookie);
132	if (dlclose_cookie != 2)
133		_exit(1);
134	_exit(0);
135}
136
137int
138main(int argc, char **argv)
139{
140	if (argc != 2)
141		return 1;
142	if (strcmp(argv[1], "dl_iterate_phdr") == 0)
143		test_dl_iterate_phdr();
144	if (strcmp(argv[1], "dlopen") == 0)
145		test_dlopen();
146	if (strcmp(argv[1], "dlclose") == 0)
147		test_dlclose();
148	return 1;
149}
150