unit-tests/test-cases/dladdr/main.c

   1 /*
   2  * Copyright (c) 2005-2008 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 #include <stdio.h>  // fprintf(), NULL
  24 #include <stdlib.h> // exit(), EXIT_SUCCESS
  25 #include <string.h>
  26 #include <dlfcn.h>
  27 #include <mach-o/dyld.h>
  28
  29 #include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
  30
  31
  32
  33 int bar()
  34 {
  35         return 2;
  36 }
  37
  38 static int foo()
  39 {
  40         return 3;
  41 }
  42
  43 __attribute__((visibility("hidden"))) int hide()
  44 {
  45         return 4;
  46 }
  47
  48 // checks global symbol
  49 static void verifybar()
  50 {
  51         Dl_info info;
  52         if ( dladdr(&bar, &info) == 0 ) {
  53                 FAIL("dladdr(&bar, xx) failed");
  54                 exit(0);
  55         }
  56         if ( strcmp(info.dli_sname, "bar") != 0 ) {
  57                 if ( strcmp(info.dli_sname, "_bar") == 0 ) {
  58                         XFAIL("dladdr()->dli_sname is \"%s\" instead of \"bar\"", info.dli_sname);
  59                 }
  60                 else {
  61                         FAIL("dladdr()->dli_sname is \"%s\" instead of \"bar\"", info.dli_sname);
  62                         exit(0);
  63                 }
  64         }
  65         if ( info.dli_saddr != &bar) {
  66                 FAIL("dladdr()->dli_saddr is not &bar");
  67                 exit(0);
  68         }
  69         if ( info.dli_fbase != _dyld_get_image_header_containing_address(&bar) ) {
  70                 FAIL("dladdr()->dli_fbase is not image that contains &bar");
  71                 exit(0);
  72         }
  73 }
  74
  75 // checks local symbol
  76 static void verifyfoo()
  77 {
  78         Dl_info info;
  79         if ( dladdr(&foo, &info) == 0 ) {
  80                 FAIL("dladdr(&foo, xx) failed");
  81                 exit(0);
  82         }
  83         if ( strcmp(info.dli_sname, "foo") != 0 ) {
  84                 FAIL("dladdr()->dli_sname is \"%s\" instead of \"foo\"", info.dli_sname);
  85                 exit(0);
  86         }
  87         if ( info.dli_saddr != &foo) {
  88                 FAIL("dladdr()->dli_saddr is not &foo");
  89                 exit(0);
  90         }
  91         if ( info.dli_fbase != _dyld_get_image_header_containing_address(&foo) ) {
  92                 FAIL("dladdr()->dli_fbase is not image that contains &foo");
  93                 exit(0);
  94         }
  95 }
  96
  97 // checks hidden symbol
  98 static void verifyhide()
  99 {
 100         Dl_info info;
 101         if ( dladdr(&hide, &info) == 0 ) {
 102                 FAIL("dladdr(&hide, xx) failed");
 103                 exit(0);
 104         }
 105         if ( strcmp(info.dli_sname, "hide") != 0 ) {
 106                 FAIL("dladdr()->dli_sname is \"%s\" instead of \"hide\"", info.dli_sname);
 107                 exit(0);
 108         }
 109         if ( info.dli_saddr != &hide) {
 110                 FAIL("dladdr()->dli_saddr is not &hide");
 111                 exit(0);
 112         }
 113         if ( info.dli_fbase != _dyld_get_image_header_containing_address(&hide) ) {
 114                 FAIL("dladdr()->dli_fbase is not image that contains &hide");
 115                 exit(0);
 116         }
 117 }
 118
 119
 120 int main()
 121 {
 122         verifybar();
 123         verifyhide();
 124         verifyfoo();
 125
 126
 127         PASS("dladdr");
 128         return EXIT_SUCCESS;
 129 }