tests/libexec/ld.elf_so/h_locking.c

   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
  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 *
  53 test_dl_iterate_phdr_helper(void *dummy)
  54 {
  55         sleep(10);
  56         _exit(1);
  57 }
  58
  59 static 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 *
  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
  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
 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
 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 }