tests/libexec/ld.elf_so/t_ifunc.c

   1 /*      $NetBSD: t_ifunc.c,v 1.1 2014/08/25 20:40:53 joerg Exp $        */
   2
   3 /*
   4  * Copyright (c) 2014 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
  17  * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  18  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  19  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
  21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  23  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  25  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  26  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  27  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #include <sys/types.h>
  31
  32 #include <atf-c.h>
  33 #include <dlfcn.h>
  34 #include <util.h>
  35
  36 #include "../../h_macros.h"
  37
  38 ATF_TC(rtld_ifunc);
  39
  40 ATF_TC_HEAD(rtld_ifunc, tc)
  41 {
  42         atf_tc_set_md_var(tc, "descr", "ifunc functions are resolved");
  43 }
  44
  45 ATF_TC_BODY(rtld_ifunc, tc)
  46 {
  47         const char *envstr[] = {
  48             "0", "1"
  49         };
  50         int expected_result[] = {
  51             0xdeadbeef, 0xbeefdead
  52         };
  53         void *handle;
  54         int (*sym)(void);
  55         int result;
  56         const char *error;
  57         size_t i;
  58
  59         for (i = 0; i < __arraycount(envstr); ++i) {
  60                 setenv("USE_IFUNC2", envstr[i], 1);
  61
  62                 handle = dlopen("libh_helper_ifunc_dso.so", RTLD_LAZY);
  63                 error = dlerror();
  64                 ATF_CHECK(error == NULL);
  65                 ATF_CHECK(handle != NULL);
  66
  67                 sym = dlsym(handle, "ifunc");
  68                 error = dlerror();
  69                 ATF_CHECK(error == NULL);
  70                 ATF_CHECK(sym != NULL);
  71
  72                 result = (*sym)();
  73                 ATF_CHECK(result == expected_result[i]);
  74
  75                 dlclose(handle);
  76                 error = dlerror();
  77                 ATF_CHECK(error == NULL);
  78
  79                 char *command;
  80                 easprintf(&command, "%s/h_ifunc %d",
  81                     atf_tc_get_config_var(tc, "srcdir"), expected_result[i]);
  82                 if (system(command) != EXIT_SUCCESS)
  83                         atf_tc_fail("Test failed; see output for details");
  84                 free(command);
  85         }
  86 }
  87
  88 ATF_TP_ADD_TCS(tp)
  89 {
  90         ATF_TP_ADD_TC(tp, rtld_ifunc);
  91         return 0;
  92 }