unit-tests/test-cases/interpose-dynamic-dlsym/main.c

   1 /*
   2  * Copyright (c) 2014 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 #include <mach-o/dyld_priv.h>
  28
  29 #include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
  30
  31 typedef int (*FooProc)();
  32
  33 int main()
  34 {
  35         void* handle = dlopen("libfoo.dylib", RTLD_LAZY);
  36         if ( handle == NULL ) {
  37                 FAIL("interpose-dynamic-dlsym: dlopen() error: %s", dlerror());
  38                 return 0;
  39         }
  40         FooProc dlsym_foo = (FooProc)dlsym(handle, "foo");
  41         if ( dlsym_foo == NULL ) {
  42                 FAIL("interpose-dynamic-dlsym: dlsym() error: %s", dlerror());
  43                 return 0;
  44         }
  45
  46   int result = (*dlsym_foo)();
  47   if ( result == 10 )
  48       PASS("interpose-dynamic-dlsym");
  49   else
  50       FAIL("interpose-dynamic-dlsym");
  51
  52         return 0;
  53 }