dyld/unit-tests/test-cases/dlsym-RTLD_DEFAULT/main.c

   1 /*
   2  * Copyright (c) 2005 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
  28 #include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
  29
  30
  31 typedef char* (*strdupProc)(const char* str);
  32
  33
  34 char* strdup(const char* str)
  35 {
  36         return "from main";
  37 }
  38
  39
  40 static void trySO(const char* path)
  41 {
  42         void* handle = dlopen(path, RTLD_LAZY);
  43         if ( handle == NULL ) {
  44                 FAIL("dlopen(\"%s\") failed", path);
  45                 exit(0);
  46         }
  47
  48         strdupProc sym = (strdupProc)dlsym(RTLD_DEFAULT, "strdup");
  49         if ( sym == NULL ) {
  50                 FAIL("dlsym(RTLD_DEFAULT, \"strdup\") failed");
  51                 exit(0);
  52         }
  53
  54         const char* result = (*sym)("hello");
  55         if ( strcmp(result, "from main") != 0 ) {
  56                 FAIL("dlsym(RTLD_DEFAULT, \"strdup\") returned wrong strdup: %s", result);
  57                 exit(0);
  58         }
  59
  60 }
  61
  62
  63
  64 int main()
  65 {
  66         trySO("test.bundle");
  67         trySO("test.dylib");
  68
  69         PASS("dlsym-RTLD_DEFAULT bundle and dylib");
  70         return EXIT_SUCCESS;
  71 }