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
38 int sleep_init;
39 int sleep_fini;
40 int dlopen_cookie;
41 int dlclose_cookie;
42
43 void (*tls_callback_sym)(void);
44
45 static int
dl_iterate_phdr_cb(struct dl_phdr_info * info,size_t size,void * data)46 dl_iterate_phdr_cb(struct dl_phdr_info *info, size_t size, void *data)
47 {
48 (*tls_callback_sym)();
49 return 0;
50 }
51
52 static void *
test_dl_iterate_phdr_helper(void * dummy)53 test_dl_iterate_phdr_helper(void *dummy)
54 {
55 sleep(10);
56 _exit(1);
57 }
58
59 static void
test_dl_iterate_phdr(void)60 test_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
81 static void *
init_fini_helper(void * arg)82 init_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
93 static void
test_dlopen(void)94 test_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
115 static void
test_dlclose(void)116 test_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
137 int
main(int argc,char ** argv)138 main(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