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 #include <Availability.h>
  29
  30 #include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
  31
  32
  33
  34 int bar()
  35 {
  36         return 2;
  37 }
  38
  39 static int foo()
  40 {
  41         return 3;
  42 }
  43
  44 __attribute__((visibility("hidden"))) int hide()
  45 {
  46         return 4;
  47 }
  48
  49 // checks global symbol
  50 static void verifybar()
  51 {
  52         Dl_info info;
  53         if ( dladdr(&bar, &info) == 0 ) {
  54                 FAIL("dladdr(&bar, xx) failed");
  55                 exit(0);
  56         }
  57         if ( strcmp(info.dli_sname, "bar") != 0 ) {
  58                 if ( strcmp(info.dli_sname, "_bar") == 0 ) {
  59                         XFAIL("dladdr()->dli_sname is \"%s\" instead of \"bar\"", info.dli_sname);
  60                 }
  61                 else {
  62                         FAIL("dladdr()->dli_sname is \"%s\" instead of \"bar\"", info.dli_sname);
  63                         exit(0);
  64                 }
  65         }
  66         if ( info.dli_saddr != &bar) {
  67                 FAIL("dladdr()->dli_saddr is not &bar");
  68                 exit(0);
  69         }
  70 #if __MAC_OS_X_VERSION_MIN_REQUIRED
  71         if ( info.dli_fbase != _dyld_get_image_header_containing_address(&bar) ) {
  72                 FAIL("dladdr()->dli_fbase is not image that contains &bar");
  73                 exit(0);
  74         }
  75 #endif
  76 }
  77
  78 // checks local symbol
  79 static void verifyfoo()
  80 {
  81         Dl_info info;
  82         if ( dladdr(&foo, &info) == 0 ) {
  83                 FAIL("dladdr(&foo, xx) failed");
  84                 exit(0);
  85         }
  86         if ( strcmp(info.dli_sname, "foo") != 0 ) {
  87                 FAIL("dladdr()->dli_sname is \"%s\" instead of \"foo\"", info.dli_sname);
  88                 exit(0);
  89         }
  90         if ( info.dli_saddr != &foo) {
  91                 FAIL("dladdr()->dli_saddr is not &foo");
  92                 exit(0);
  93         }
  94 #if __MAC_OS_X_VERSION_MIN_REQUIRED
  95         if ( info.dli_fbase != _dyld_get_image_header_containing_address(&foo) ) {
  96                 FAIL("dladdr()->dli_fbase is not image that contains &foo");
  97                 exit(0);
  98         }
  99 #endif
 100 }
 101
 102 // checks hidden symbol
 103 static void verifyhide()
 104 {
 105         Dl_info info;
 106         if ( dladdr(&hide, &info) == 0 ) {
 107                 FAIL("dladdr(&hide, xx) failed");
 108                 exit(0);
 109         }
 110         if ( strcmp(info.dli_sname, "hide") != 0 ) {
 111                 FAIL("dladdr()->dli_sname is \"%s\" instead of \"hide\"", info.dli_sname);
 112                 exit(0);
 113         }
 114         if ( info.dli_saddr != &hide) {
 115                 FAIL("dladdr()->dli_saddr is not &hide");
 116                 exit(0);
 117         }
 118 #if __MAC_OS_X_VERSION_MIN_REQUIRED
 119         if ( info.dli_fbase != _dyld_get_image_header_containing_address(&hide) ) {
 120                 FAIL("dladdr()->dli_fbase is not image that contains &hide");
 121                 exit(0);
 122         }
 123 #endif
 124 }
 125
 126
 127 int main()
 128 {
 129         verifybar();
 130         verifyhide();
 131         verifyfoo();
 132
 133
 134         PASS("dladdr");
 135         return EXIT_SUCCESS;
 136 }