unit-tests/test-cases/dlopen-RTLD_LOCAL-weak/main.c

   1 /*
   2  * Copyright (c) 2008 Apple 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 // this strong A should not override weak
  31 // As in loaded code because of RTLD_LOCAL
  32 int A[] = { 10, 11, 12, 13 };
  33
  34 typedef int* (*getproc)(void);
  35
  36 int main(int argc, const char* argv[])
  37 {
  38         // open first object
  39         void* fooHandle = dlopen("libfoo.dylib", RTLD_LOCAL);
  40         if ( fooHandle == NULL ) {
  41                 FAIL("dlopen-RTLD_LOCAL-weak: dlopen(\"libfoo.dylib\", RTLD_LOCAL) failed: %s", dlerror());
  42                 return EXIT_SUCCESS;
  43         }
  44
  45         // open second object
  46         void* barHandle = dlopen("libbar.dylib", RTLD_LOCAL);
  47         if ( barHandle == NULL ) {
  48                 FAIL("dlopen-RTLD_LOCAL-weak: dlopen(\"libbar.dylib\", RTLD_LOCAL) failed: %s", dlerror());
  49                 return EXIT_SUCCESS;
  50         }
  51
  52         // get functions
  53         getproc fooproc = (getproc)dlsym(fooHandle, "getA");
  54         if ( fooproc == NULL ) {
  55                 FAIL("dlopen-RTLD_LOCAL-weak: dlsym(getA) failed: %s", dlerror());
  56                 return EXIT_SUCCESS;
  57         }
  58         getproc barproc = (getproc)dlsym(barHandle, "getA");
  59         if ( barproc == NULL ) {
  60                 FAIL("dlopen-RTLD_LOCAL-weak: dlsym(getA) failed: %s", dlerror());
  61                 return EXIT_SUCCESS;
  62         }
  63
  64         // get values
  65         int* fooA = (*fooproc)();
  66         int* barA = (*barproc)();
  67
  68         if ( fooA == A )
  69                 FAIL("dlopen-RTLD_LOCAL-weak: fooA == A");
  70         else if ( barA == A )
  71                 FAIL("dlopen-RTLD_LOCAL-weak: barA == A");
  72         else if ( fooA == barA )
  73                 FAIL("dlopen-RTLD_LOCAL-weak: fooA == barA");
  74         else
  75                 PASS("dlopen-RTLD_LOCAL-weak");
  76         return EXIT_SUCCESS;
  77 }